HomeMy WebLinkAboutWWP273549 (6)icy GpPP3 opPNO
CERTIFICATE OF COMPLIANCE
US Army Corps WITH DEPARTMENT OF THE ARMY PERMIT
of Engineers o
Seattle District
Permit Number: NWS-2011-967
Name of Permittee: City of Renton Public Works
Date of Issuance: JAN 0 9 2013
Upon completion of the activity authorized by this permit, please check the applicable boxes below, date
and sign this certification, and return it to the following address:
Department of the Army
U.S. Army Corps of Engineers
Seattle District, Regulatory Branch
Post Office Box 3755
Seattle, Washington 98124-3755
Please note that your permitted activity is subject to a compliance inspection by a U.S. Army Corps of
Engineers representative. If you fail to comply with the terms and conditions of your authorization, your
permit may be subject to suspension, modification, or revocation.
The work authorized by the above -referenced permit has been completed in accordance with the
® terms and conditions of this permit.
Date work complete: co,L,-t -1, Z0 \ 3
❑ Photographs and as -built drawings of the authorized work (OPTIONAL, unless required
as a Special Condition of the permit).
If applicable, the mitigation required (e.g., construction and plantings) in the above -referenced
® permit has been completed in accordance with the terms and conditions of this permit (not
including future monitoring).
Date work complete: c) c r 1 , 2a N 3.
❑ Photographs and as -built drawings of the mitigation (OPTIONAL, unless required as a
Special Condition of the permit).
Printed Name:
Signature:
Date:
Public Works Department - Gregg Zimmerman, P. E., Administrator
October 11, 2013
Department of the Army
U.S. Army Corps of Engineers
Seattle District, Regulatory Branch
PO Box 3755
Seattle, WA 98124-3755
RE: Certificate of Compliance with Permit #NWS-2011-967
East Renton Lift Station Elimination
Dear Army Corps of Engineers:
Enclosed if the Certificate of Compliance for Permit Number NWS-2011-967 for the City
of Renton's East Renton Lift Station Elimination project.
If you have any questions, please contact me at 425-430-7206 or
mbenoit@rentonwa.gov.
Sincerely,
Michael A. Benoit
Wastewater Utility
Enclosure
H:\File Sys\WWP - WasteWater\WWP-27-3549 East Renton Lift Station Elimination\USACE Permit Compliance.doc\
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Renton City Hall • 1055 South Grady Way • Renton, Washington 98057 • rentonwa.gov
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CERTIFICATE OF COMPLIANCE
US Army corps WITH DEPARTMENT OF THE ARMY PERMIT
of Engineers ooI�i
Seattle District 4"0R14w
Permit Number: NWS-2011-967
Name of Permittee: City of Renton Public Works
Date of Issuance: JAN 0 9 2013
Upon completion of the activity authorized by this permit, please check the applicable boxes below, date
and sign this certification, and return it to the following address:
Department of the Army
U.S. Army Corps of Engineers
Seattle District, Regulatory Branch
Post Office Box 3755
Seattle, Washington 98124-3755
Please note that your permitted activity is subject to a compliance inspection by a U.S. Army Corps of
Engineers representative. If you fail to comply with the terms and conditions of your authorization, your
permit may be subject to suspension, modification, or revocation.
The work authorized by the above -referenced permit has been completed in accordance with the
E4 terms and conditions of this permit.
Date work complete:
❑ Photographs and as -built drawings of the authorized work (OPTIONAL, unless required
as a Special Condition of the permit).
If applicable, the mitigation required (e.g., construction and plantings) in the above -referenced
® permit has been completed in accordance with the terms and conditions of this permit (not
including future monitoring).
Date work complete:
❑ Photographs and as -built drawings of the mitigation (OPTIONAL, unless required as a
Special Condition of the permit).
Printed Name:
Signature:
Date:
Regulatory Branch
Dave Christensen
City of Renton Public Works
1055 South Grady Way
Renton, Washington 98057
Dear Mr. Christensen:
DEPARTMENT OF THE ARMY
SEATTLE DISTRICT, CORPS OF ENGINEERS
P.O. BOX 3755
SEATTLE, WASHINGTON 98124-3755
JAN 2 4 2D13
Reference:. NWS-2011-967
Renton Public Works
In the email dated November 9, 2012, your agent requested a time extension for the
verification of the referenced Nationwide Permit (NWP) 12 verification issued to you on
March 15, 2012. The work authorized was to place 30 cubic yards of fill in Stewart Creek for a
sewer line construction at Renton, in King County, Washington. You also requested a permit
modification to the NWP verification. Based on the information you provided to us, NWP 12,
Utility Line Activities (Federal Register, February 21, 2012, Vol. 77, No. 34), authorizes your
proposal as depicted on the enclosed drawings dated July 2011. In order for this NWP
authorization to be valid, you must ensure the work is performed in accordance with the enclosed
NWP 12, Terms and Conditions and the following special condition:
a. You must implement and abide by the Endangered Species Act (ESA) requirements
and/or agreements set forth in the Letter of No Effect, dated August, in their entirety. The U.S.
Army Corps of Engineers (Corps) made a determination of No Effect for all species based on
this document. Failure to comply with the commitments made in this document constitutes
non-compliance with the ESA and your Corps permit. As stated in your application, you may
conduct the authorized activities from June 1 through September 30 in any year this permit is
valid.. You shall not conduct work authorized by this permit from October 1 through May 31 in
any year this permit is valid.
Please note that Seattle District NWP Regional General Condition 5, Cultural Resources and
Human Burials, found in the NWP Terms and Conditions enclosure, details procedures should an
inadvertent discovery occur. You must ensure that you comply with this condition during the
construction of your project.
The authorized work complies with the Washington State Department of Ecology's
(Ecology) Water Quality Certification and the Coastal Zone Management Act requirements for
this NWP. No further coordination with Ecology is required.
-2-
We have reviewed your project pursuant to the'requirements of the ESA and the
Magnuson -Stevens Fishery Conservation and Management Act in regards to Essential Fish
Habitat (EFH). We have determined that this project complies with the requirements of the
NWP National General Condition regarding ESA and will not adversely affect EFH.
We have prepared and enclosed a Preliminary Jurisdictional Determination (JD), which is a
written indication that wetlands and waterways within your project area may be waters of the
United States. Such waters will be treated as jurisdictional waters of the U.S. for purposes of
computation of impact area and compensatory mitigation requirements associated with your
permit application. If you believe the Preliminary JD is inaccurate, you may request an
Approved JD, which is an official determination regarding the presence or absence of waters of
the United States. If one is requested, please be aware that we may require the submittal of
additional information to complete an approved JD and work authorized in this letter may not
occur until the approved JD has been finalized.
Our verification of this NWP authorization is valid for two years from the date of this letter
unless the NWP is modified, reissued, or revoked prior to that date. If the authorized work has
not been completed by that date, please contact us to discuss the status of your authorization.
Upon completing the authorized work, you must fill out and return the. enclosed Certificate
of Compliance with Department of the Army Permit form. Thank you for your cooperation
during the permit process. We are interested in your experience with our Regulatory Program
and encourage you to `complete a customer service survey form. This form and information
about our program is available on our website at: http://www.nws.usace.army.miU select
"Regulatory Branch, Permit Information" and then "Forms". A copy of this letter without
enclosures will be furnished to Ms. Sara Noland, ESA, at 5309 Shilshole Avenue Northwest,
Suite 200, Seattle, Washington 98107. If you have any questions, please contact me at
lori.c.lull@usace.army.mil or (206) 316-3153.
Sincerely,
Lori C. Lull, Project Manager
Regulatory Branch
Enclosures
Cc: letter only via email to Washington Department of Ecology, Federal Permit Coordinator at:
ecyrefedpermits(a),ecy.wa.gov
,.A
ays oswo
NATIONWIDE PERMIT 12
Army Corps of Terms and Conditions
of Engineers •:
Seattle District
Effective Date: June 15, 2012
A. Description of Authorized Activities
B. Corps National General Conditions for all NWPs
C. Corps Seattle District Regional General Conditions
D. Corps Regional Specific Conditions for this NWP
E. State 401 Certification General Conditions
F. State 401 Certification Specific Conditions for this NWP
G. EPA 401 Certification General Conditions
H: EPA 401 Certification Specific Conditions for this NWP
I. Coastal Zone Management Consistency Response for this NWP
In addition to any special condition that may be required on a case -by -case basis by the District Engineer,
the following terms and conditions must be met, as applicable, for a Nationwide Permit authorization to be
valid in Washington State.
A. DESCRIPTION OF AUTHORIZED ACTIVITIES
12. Utility Line Activities. Activities required for the construction, maintenance, repair, and removal of
utility lines and associated facilities in waters of the United States, provided the activity does not result in
the loss of greater than 1/2-acre of waters of the United States for each single and complete project.
Utility lines: This NWP authorizes the construction, maintenance, or repair of utility lines,
including outfall and intake structures, and the associated excavation, backfill, or bedding for the utility
lines, in all waters of the United States, provided there is no change in pre -construction contours. A
"utility line" is defined as any pipe or pipeline for the transportation of any gaseous, liquid, liquescent, or
slurry substance, for any purpose, and any cable, line, or wire for the transmission for any purpose of
electrical energy, telephone, and telegraph messages, and radio and television communication. The term
"utility line" does not include activities that drain a water of the United States, such as drainage tile or
french drains, but it does apply to pipes conveying drainage from another area.
Material resulting from trench excavation may be temporarily sidecast into waters of the United
States for no more than three months, provided the material is not placed in such a manner that it is
dispersed by currents or other forces. The district engineer may extend the period of temporary side
casting for no more than a total of 180 days, where appropriate. In wetlands, the top 6 to 12 inches of the
trench should normally be backfilled with topsoil from the trench. The trench cannot be constructed or
backfilled in such a manner as to drain waters of the United States (e.g., backfilling with extensive gravel
layers, creating a french drain effect). Any exposed slopes and stream banks must be stabilized
immediately upon completion of the utility line crossing of each waterbody.
Utility line substations: This NWP authorizes the construction, maintenance, or expansion of
substation facilities associated with a power line or utility line in non -tidal waters of the United States,
provided the activity, in combination with all other activities included in one single and complete project,
does not result in the loss of greater than 1/2-acre of waters of the United States. This NWP does not
authorize discharges into non -tidal wetlands adjacent to tidal waters of the United States to construct,
maintain, or expand substation facilities.
Foundations for overhead utility line towers, poles, and anchors: This NWP authorizes the
construction or maintenance of foundations for overhead utility line towers, poles, and anchors in all
I�
waters of the United States, provided the foundations are the minimum size necessary and separate
footings for each tower leg (rather than a larger single pad) are used where feasible.
Access roads: This NWP authorizes the construction of access roads for the construction and
maintenance of utility lines, including overhead power lines and utility line substations, in non -tidal
waters of the United States, provided the activity, in combination with all other activities included in one
single and complete project, does not cause the loss of greater than 1/2-acre of non -tidal waters of the
United States. This NWP does not authorize discharges into non -tidal wetlands adjacent to tidal waters for
access roads. Access roads must be the minimum width necessary (see Note 2, below). Access roads must
be constructed so that the length of the road minimizes any adverse effects on waters of the United States
and must be as near as possible to pre -construction contours and elevations (e.g., at grade corduroy roads
or geotextile/gravel roads). Access roads constructed above pre -construction contours and elevations in
waters of the United States must be properly bridged or culverted to maintain surface flows.
This NWP may authorize utility lines in or affecting navigable waters of the United States even if
there is no associated discharge of dredged or fill material (See 33 CFR Part 322). Overhead utility lines
constructed over section 10 waters and utility lines that are routed in or under section 10 waters without a
discharge of dredged or fill material require a section 10 permit.
This NWP also authorizes temporary structures, fills, and work necessary to conduct the utility
line activity. Appropriate measures must be taken to maintain normal downstream flows and minimize
flooding to the maximum extent practicable, when temporary structures, work, and discharges, including
cofferdams, are necessary for construction activities, access fills, or dewatering of construction sites.
Temporary fills must consist of materials, and be placed in a manner, that will not be eroded by expected
high flows. Temporary fills must be removed in their entirety and the affected areas returned to pre -
construction elevations. The areas affected by temporary fills must be revegetated, as appropriate.
Notification: The permittee must submit a pre -construction notification to the district engineer
prior to commencing the activity if any of the following criteria are met: (1) the activity involves
mechanized land clearing in a forested wetland for the utility line right-of-way; (2) a section 10 permit is
required; (3) the utility line in waters of the United States, excluding overhead lines, exceeds 500 feet; (4)
the utility line is placed within a jurisdictional area (i.e., water of the United States), and it runs parallel to
or along a stream bed that is within that jurisdictional area; (5) discharges that result in the loss of greater
than 1/10-acre of waters of the United States; (6) permanent access roads are constructed above grade in
waters of the United States for a distance of more than 500 feet; or (7) permanent access roads are
constructed in waters of the United States with impervious materials. (See general condition 31.)
(Sections 10 and 404)
Note 1: Where the proposed utility line is constructed or installed in navigable waters of the
United States (i.e., section 10 waters) within the coastal United States, the Great Lakes, and United States
territories, copies of the pre -construction notification and NWP verification will be sent by the Corps to
the National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), for
charting the utility line to protect navigation.
Note 2: Access roads used for both construction and maintenance may be authorized, provided
they meet the terms and conditions of this NWP. Access roads used solely for construction of the utility
line must be removed upon completion of the work, in accordance with the requirements for temporary
fills.
Note 3: Pipes or pipelines used to transport gaseous, liquid, liquescent, or slurry substances over
navigable waters of the United States are considered to be bridges, not utility lines, and may require a
permit from the U.S. Coast Guard pursuant to Section 9 of the Rivers and Harbors Act of 1899. However,
any discharges of dredged or fill material into waters of the United States associated with such pipelines
will require a section 404 permit (see NWP 15).
Note 4: For overhead utility lines authorized by this NWP, a copy of the PCN and NWP
verification will be provided to the Department of Defense Siting Clearinghouse, which will evaluate
potential effects on military activities.
B. CORPS NATIONAL GENERAL CONDITIONS FOR ALL NWPs
Note: To qualify for NWP authorization, the prospective permittee must comply with the following
general conditions, as applicable, in addition to, any regional or case -specific conditions imposed by the
division engineer or district engineer. Prospective permittees should contact the appropriate Corps district
office to determine if regional conditions have been imposed on an NWP. Prospective permittees should
also contact the appropriate Corps district office to determine the status of Clean Water Act Section 401
water quality certification and/or Coastal Zone Management Act consistency for an NWP. Every person
who may wish to obtain permit authorization under one or more NWPs, or who is currently relying on an
existing or prior permit authorization under one or more NWPs, has been and is on notice that all of the
provisions of 33 CFR § 330.1 through 330.6 apply to every NWP authorization. Note especially 33 CFR
§ 330.5 relating to the modification, suspension, or revocation of any NWP authorization.
1. Navigation. (a) No activity may cause more than a minimal adverse effect on navigation.
(b) Any safety lights and signals prescribed by the U.S. Coast Guard, through regulations or
otherwise, must be installed and maintained at the permittee's expense on authorized facilities in
navigable waters of the United States.
(c) The permittee understands and agrees that, if future operations by the United States require the
removal, relocation, or other alteration, of the structure or work herein authorized, or if, in the opinion of
the Secretary of the Army or his authorized representative, said structure or work shall cause
unreasonable obstruction to the free navigation of the navigable waters, the permittee will be required,
upon due notice from the Corps of Engineers, to remove, relocate, or alter the structural work or
obstructions caused thereby, without expense to the United States. No claim shall be made against the
United States on account of any such removal or alteration.
2. Aquatic Life Movements. No activity may substantially disrupt the necessary life cycle movements of
those species of aquatic life indigenous to the waterbody, including those species that normally migrate
through the area, unless the activity's primary purpose is to impound water. All permanent and temporary
crossings of waterbodies shall be suitably culverted, bridged, or otherwise designed and constructed to
maintain low flows to sustain the movement of those aquatic species.
3. Spawning Areas. Activities in spawning areas during spawning seasons must be avoided to the
maximum extent practicable. Activities that result in the physical destruction (e.g., through excavation,
fill, or downstream smothering by substantial turbidity) of an important spawning area are not authorized.
4. Migratory Bird Breeding Areas. Activities in waters of the United States that serve as breeding areas
for migratory birds must be avoided to the maximum extent practicable.
5. Shellfish Beds. No activity may occur in areas of concentrated shellfish populations, unless the activity
is directly related to a shellfish harvesting activity authorized by NWPs 4 and 48, or is a shellfish seeding
or habitat restoration activity authorized by NWP 27.
6. Suitable Material. No activity may use unsuitable material (e.g., trash, debris, car bodies, asphalt, etc.).
Material used for construction or discharged must be free from toxic pollutants in toxic amounts (see
Section 307 of the Clean Water Act).
7. Water Supply Intakes. No activity may occur in the proximity of a public water supply intake, except
where the activity is for the repair or improvement of public water supply intake structures or adjacent
bank stabilization.
8. Adverse Effects From Impoundments. If the activity creates an impoundment of water, adverse effects
to the aquatic system due to accelerating the passage of water, and/or restricting its flow must be
minimized to the maximum extent practicable.
9. Management of Water Flows. To the maximum extent practicable, the pre -construction course,
condition, capacity, and location of open waters must be maintained for each activity, including stream
channelization and storm water management activities, except as provided below. The activity must be
constructed to withstand expected high flows. The activity must not restrict or impede the passage of
nonnal or high flows, unless the primary purpose of the activity is to impound water or manage high
flows. The activity may alter the pre -construction course, condition, capacity, and location of open waters
if it benefits the aquatic environment (e.g., stream restoration or relocation activities).
10. Fills Within 100-Year Floodplains. The activity must comply with applicable FEMA-approved state
or local floodplain management requirements.
11. Equipment. Heavy equipment working in wetlands or mudflats must be placed on mats, or other
measures must be taken to minimize soil disturbance.
12. Soil Erosion and Sediment Controls. Appropriate soil erosion and sediment controls must be used and
maintained in effective operating condition during construction, and all exposed soil and other fills, as
well as any work below the ordinary high water mark or high tide line, must be permanently stabilized at
the earliest practicable date. Permittees are encouraged to perform work within waters of the United
States during periods of low -flow or no -flow.
13. Removal of Temporary Fills. Temporary fills must be removed in their entirety and the affected areas
returned to pre -construction elevations. The affected areas must be revegetated, as appropriate.
14. Proper Maintenance. Any authorized structure or fill shall be properly maintained, including
maintenance to ensure public safety and compliance with applicable NWP general conditions, as well as
any activity -specific conditions added by the district engineer to an NWP authorization.
15. Single and Complete Project. The activity must be a single and complete project. The same NWP
cannot be used more than once for the same single and complete project.
16. Wild and Scenic Rivers. No activity may occur in a component of the National Wild and Scenic River
System, or in a river officially designated by Congress as a "study river" for possible inclusion in the
system while the river is in an official study status, unless the appropriate Federal agency with direct
management responsibility for such river, has determined in writing that the proposed activity will not
adversely affect the Wild and Scenic River designation or study status. Information on Wild and Scenic
Rivers may be obtained from the appropriate Federal land management agency responsible for the
designated Wild and Scenic River or study river (e.g., National Park Service, U.S. Forest Service, Bureau
of Land Management, U.S. Fish and Wildlife Service).
17. Tribal Rights. No activity or its operation may impair reserved tribal rights, including, but not limited
to, reserved water rights and treaty fishing and hunting rights.
18. Endangered Species. (a) No activity is authorized under any NWP which is likely to directly or
indirectly jeopardize the continued existence of a threatened or endangered species or a species proposed
for such designation, as identified under the Federal Endangered Species Act (ESA), or which will
directly or indirectly destroy or adversely modify the critical habitat of such species. No activity is
4
authorized under any NWP which "may affect" a listed species or critical habitat, unless Section 7
consultation addressing the effects of the proposed activity has been completed.
(b) Federal agencies should follow their own procedures for complying with the requirements of the
ESA. Federal permittees must provide the district engineer with the appropriate documentation to
demonstrate compliance with those requirements. The district engineer will review the documentation and
determine whether it is sufficient to address ESA compliance for the NWP activity, or whether additional
ESA consultation is necessary.
(c) Non-federal permittees must submit a pre -construction notification to the district engineer if any
listed species or designated critical habitat might be affected or is in the vicinity of the project, or if the
project is located in designated critical habitat, and shall not begin work on the activity until notified by
the district engineer that the requirements of the ESA have been satisfied and that the activity is
authorized. For activities that might affect Federally -listed endangered or threatened species or designated
critical habitat, the pre -construction notification must include the name(s) of the endangered or threatened
species that might be affected by the proposed work or that utilize the designated critical habitat that
might be affected by the proposed work. The district engineer will determine whether the proposed
activity "may affect" or will have "no effect" to listed species and designated critical habitat and will
notify the non -Federal applicant of the Corps' determination within 45 days of receipt of a complete pre -
construction notification. In cases where the non -Federal applicant has identified listed species or critical
habitat that might be affected or is in the vicinity of the project, and has so notified the Corps, the
applicant shall not begin work until the Corps has provided notification the proposed activities will have
"no effect" on listed species or critical habitat, or until Section 7 consultation has been completed. If the
non -Federal applicant has not heard back from the Corps within 45 days, the applicant must still wait for
notification from the Corps.
(d) As a result of formal or informal consultation with the FWS or NMFS the district engineer may
add species -specific regional endangered species conditions to the NWPs.
(e) Authorization of an activity by a NWP does not authorize the "take" of a threatened or endangered
species as defined under the ESA. In the absence of separate authorization (e.g., an ESA Section 10
Permit, a Biological Opinion with "incidental take" provisions, etc.) from the U.S. FWS or the NMFS,
The Endangered Species Act prohibits any person subject to the jurisdiction of the United States to take a
listed species, where "take" means to harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, or
collect, or to attempt to engage in any such conduct. The word "harm" in the definition of "take" means
an act which actually kills or injures wildlife. Such an act may include significant habitat modification or
degradation where it actually kills or injures wildlife by significantly impairing essential behavioral
patterns, including breeding, feeding or sheltering.
(f) Information on the location of threatened and endangered species and their critical habitat can be
obtained directly from the offices of the U.S. FWS and NMFS or their world wide web pages at
http://www.fws.gov/ or http://www.fws.gov/ipac and http://www.noaa.gov/fishen'es.html respectively.
19. Migratory Birds and Bald and Golden Eagles. The permittee is responsible for obtaining any "take"
permits required under the U.S. Fish and Wildlife Service's regulations governing compliance with the
Migratory Bird Treaty Act or the Bald and Golden Eagle Protection Act. The permittee should contact the
appropriate local office of the U.S. Fish and Wildlife Service to determine if such "take" permits are
required for a particular activity.
20. Historic Properties. (a) In cases where the district engineer determines that the activity may affect
properties listed, or eligible for listing, in the National Register of Historic Places, the activity is not
authorized, until the requirements of Section 106 of the National Historic Preservation Act (NHPA) have
been satisfied.
(b) Federal permittees should follow their own procedures for complying with the requirements of
Section 106 of the National Historic Preservation Act. Federal permittees must provide the district
engineer with the appropriate documentation to demonstrate compliance with those requirements. The
district engineer will review the documentation and determine whether it is sufficient to address section
106 compliance for the NWP activity, or whether additional section 106 consultation is necessary.
(c) Non-federal pennittees must submit a pre -construction notification to the district engineer if the
authorized activity may have the potential to cause effects to any historic properties listed on, determined
to be eligible for listing on, or potentially eligible for listing on the National Register of Historic Places,
including previously unidentified properties. For such activities, the pre -construction notification must
state which historic properties may be affected by the proposed work or include a vicinity map indicating
the location of the historic properties or the potential for the presence of historic properties. Assistance
regarding information on the location of or potential for the presence of historic resources can be sought
from the State Historic Preservation Officer or Tribal Historic Preservation Officer, as appropriate, and
the National Register of Historic Places (see 33 CFR 330.4(g)). When reviewing pre -construction
notifications, district engineers will comply with the current procedures for addressing the requirements
of Section 106 of the National Historic Preservation Act. The district engineer shall make a reasonable
and good faith effort to carry out appropriate identification efforts, which may include background
research, consultation, oral history interviews, sample field investigation, and field survey. Based on the
infornation submitted and these efforts, the district engineer shall determine whether the proposed
activity has the potential to cause an effect on the historic properties. Where the non -Federal applicant has
identified historic properties on which the activity may have the potential to cause effects and so notified
the Corps, the non -Federal applicant shall not begin the activity until notified by the district engineer
either that the activity has no potential to cause effects or that consultation under Section 106 of the
NHPA has been completed.
(d) The district engineer will notify the prospective permittee within 45 days of receipt of a complete
pre -construction notification whether NHPA Section 106 consultation is required. Section 106
consultation is not required when the Corps determines that the activity does not have the potential to
cause effects on historic properties (see 36 CFR §800.3(a)). If NHPA section 106 consultation is required
and will occur, the district engineer will notify the non -Federal applicant that he or she cannot begin work
until Section 106 consultation is completed. If the non -Federal applicant has not heard back from the
Corps within 45 days, the applicant must still wait for notification from the Corps.
(e) Prospective permittees should be aware that section 110k of the NHPA (16 U.S.C. 470h-2(k))
prevents the Corps from granting a pen -nit or other assistance to an applicant who, with intent to avoid the
requirements of Section 106 of the NHPA, has intentionally significantly adversely affected a historic
property to which the permit would relate, or having legal power to prevent it, allowed such significant
adverse effect to occur, unless the Corps, after consultation with the Advisory Council on Historic
Preservation (ACHP), determines that circumstances justify granting such assistance despite the adverse
effect created or permitted by the applicant. If circumstances justify granting the assistance, the Corps is
required to notify the ACHP and provide documentation specifying the circumstances, the degree of
damage to the integrity of any historic properties affected, and proposed mitigation. This documentation
must include any views obtained from the applicant, SHPO/THPO, appropriate Indian tribes if the
undertaking occurs on or affects historic properties on tribal lands or affects properties of interest to those
tribes, and other parties known to have a legitimate interest in the impacts to the permitted activity on
historic properties.
21. Discovery of Previously Unknown Remains and Artifacts. If you discover any previously unknown
historic, cultural or archeological remains and artifacts while accomplishing the activity authorized by this
permit, you must immediately notify the district engineer of what you have found, and to the maximum
extent practicable, avoid construction activities that may affect the remains and artifacts until the required
coordination has been completed. The district engineer will initiate the Federal, Tribal and state
coordination required to determine if the items or remains warrant a recovery effort or if the site is
eligible for listing in the National Register of Historic Places.
22. Designated Critical Resource Waters. Critical resource waters include, NOAA-managed marine
sanctuaries and marine monuments, and National Estuarine Research Reserves. The district engineer may
designate, after notice and opportunity for public comment, additional waters officially designated by a
state as having particular environmental or ecological significance, such as outstanding national resource
waters or state natural heritage sites. The district engineer may also designate additional critical resource
waters after notice and opportunity for public comment.
(a) Discharges of dredged or fill material into waters of the United States are not authorized by NWPs
7, 12, 14, 16, 17, 21, 29, 31, 35, 39, 40, 42, 43, 44, 49, 50, 51, and 52 for any activity within, or directly
affecting, critical resource waters, including wetlands adjacent to such waters.
(b) For NWPs 3, 8, 10, 13, 15, 18, 19, 22, 23, 25, 27, 28, 30, 33, 34, 36, 37, and 38, notification is
required in accordance with general condition 31, for any activity proposed in the designated critical
resource waters including wetlands adjacent to those waters. The district engineer may authorize activities
under these NWPs only after it is determined that the impacts to the critical resource waters will be no
more than minimal.
23. Mitigation. The district engineer will consider the following factors when determining appropriate and
practicable mitigation necessary to ensure that adverse effects on the aquatic environment are minimal:
(a) The activity must be designed and constructed to avoid and minimize adverse effects, both
temporary and permanent, to waters of the United States to the maximum extent practicable at the project
site (i.e., on site).
(b) Mitigation in all its forms (avoiding, minimizing, rectifying, reducing, or compensating for
resource losses) will be required to the extent necessary to ensure that the adverse effects to the aquatic
environment are minimal.
(c) Compensatory mitigation at a minimum one -for -one ratio will be required for all wetland losses
that exceed 1/10-acre and require pre -construction notification, unless the district engineer determines in
writing that either some other form of mitigation would be more environmentally appropriate or the
adverse effects of the proposed activity are minimal, and provides a project -specific waiver of this
requirement. For wetland losses of 1/10-acre or less that require pre -construction notification, the district
engineer may determine on a case -by -case basis that compensatory mitigation is required to ensure that
the activity results in minimal adverse effects on the aquatic environment. Compensatory mitigation
projects provided to offset losses of aquatic resources must comply with the applicable provisions of 33
CFR part 332. (1) The prospective permittee is responsible for proposing an appropriate compensatory
mitigation option if compensatory mitigation is necessary to ensure that the activity results in minimal
adverse effects on the aquatic environment. (2) Since the likelihood of success is greater and the impacts
to potentially valuable uplands are reduced, wetland restoration should be the first compensatory
mitigation option considered. (3) If permittee-responsible mitigation is the proposed option, the
prospective permittee is responsible for submitting a mitigation plan. A conceptual or detailed mitigation
plan may be used by the district engineer to make the decision on the NWP verification request, but a
final mitigation plan that addresses the applicable requirements of 33 CFR 332.4(c)(2) - (14) must be
approved by the district engineer before the permittee begins work in waters of the United States, unless
the district engineer determines that prior approval of the final mitigation plan is not practicable or not
necessary to ensure timely completion of the required compensatory mitigation (see 33 CFR 332.3(k)(3)).
(4) If mitigation bank or in -lieu fee program credits are the proposed option, the mitigation plan only
needs to address the baseline conditions at the impact site and the number of credits to be provided.
(5) Compensatory mitigation requirements (e.g., resource type and amount to be provided as
compensatory mitigation, site protection, ecological performance standards, monitoring requirements)
may be addressed through conditions added to the NWP authorization, instead of components of a
compensatory mitigation plan.
(d) For losses of streams or other open waters that require pre -construction notification, the district
engineer may require compensatory mitigation, such as stream rehabilitation, enhancement, or
preservation, to ensure that the activity results in minimal adverse effects on the aquatic environment.
(e) Compensatory mitigation will not be used to increase the acreage losses allowed by the acreage
limits of the NWPs. For example, if an NWP has an acreage limit of 1/2-acre, it cannot be used to
authorize any project resulting in the loss of greater than 1/2-acre of waters of the United States, even if
compensatory mitigation is provided that replaces or restores some of the lost waters. However,
compensatory mitigation can and should be used, as necessary, to ensure that a project already meeting
the established acreage limits also satisfies the minimal impact requirement associated with the NWPs.
(f) Compensatory mitigation plans for projects in or near streams or other open waters will normally
include a requirement for the restoration or establishment, maintenance, and legal protection (e.g.,
conservation easements) of riparian areas next to open waters. In some cases, riparian areas may be the
only compensatory mitigation required. Riparian areas should consist of native species. The width of the
required riparian area will address documented water quality or aquatic habitat loss concerns. Normally,
the riparian area will be 25 to 50 feet wide on each side of the stream, but the district engineer may
require slightly wider riparian areas to address documented water quality or habitat loss concerns. If it is
not possible to establish a riparian area on both sides of a stream, or if the waterbody is a lake or coastal
waters, then restoring or establishing a riparian area along a single bank or shoreline may be sufficient.
Where both wetlands and open waters exist on the project site, the district engineer will determine the
appropriate compensatory mitigation (e.g., riparian areas and/or wetlands compensation) based on what is
best for the aquatic environment on a watershed basis. In cases where riparian areas are determined to be
the most appropriate form of compensatory mitigation, the district engineer may waive or reduce the
requirement to provide wetland compensatory mitigation for wetland losses.
(g) Permittees may propose the use of mitigation banks, in -lieu fee programs, or separate permittee-
responsible mitigation. For activities resulting in the loss of marine or estuarine resources, permittee-
responsible compensatory mitigation may be environmentally preferable if there are no mitigation banks
or in -lieu fee programs in the area that have marine or estuarine credits available for sale or transfer to the
permittee. For permittee-responsible mitigation, the special conditions of the NWP verification must
clearly indicate the party or parties responsible for the implementation and performance of the
compensatory mitigation project, and, if required, its long-term management.
(h) Where certain functions and services of waters of the United States are permanently adversely
affected, such as the conversion of a forested or scrub -shrub wetland to a herbaceous wetland in a
permanently maintained utility line right-of-way, mitigation may be required to reduce the adverse effects
of the project to the minimal level.
24. Safety of Impoundment Structures. To ensure that all impoundment structures are safely designed,
the district engineer may require non -Federal applicants to demonstrate that the structures comply with
established state dam safety criteria or have been designed by qualified persons. The district engineer may
also require documentation that the design has been independently reviewed by similarly qualified
persons, and appropriate modifications made to ensure safety.
25. Water Quality. Where States and authorized Tribes, or EPA where applicable, have not previously
certified compliance of an NWP with CWA Section 401, individual 401 Water Quality Certification must
be obtained or waived (see 33 CFR 330.4(c)). The district engineer or State or Tribe may require
additional water quality management measures to ensure that the authorized activity does not result in
more than minimal degradation of water quality.
26. Coastal Zone Management. In coastal states where an NWP has not previously received a state coastal
zone management consistency concurrence, an individual state coastal zone management consistency
concurrence must be obtained, or a presumption of concurrence must occur (see 33 CFR 330.4(d)). The
district engineer or a State may require additional measures to ensure that the authorized activity is
consistent with state coastal zone management requirements.
27. Regional and Case -By -Case Conditions. The activity must comply with any regional conditions that
may have been added by the Division Engineer (see 33 CFR 330.4(e)) and with any case specific
conditions added by the Corps or by the state, Indian Tribe, or U.S. EPA in its section 401 Water Quality
Certification, or by the state in its Coastal Zone Management Act consistency determination.
28. Use of Multiple Nationwide Permits. The use of more than one NWP for a single and complete
project is prohibited, except when the acreage loss of waters of the United States authorized by the NWPs
does not exceed the acreage limit of the NWP with the highest specified acreage limit. For example, if a
road crossing over tidal waters is constructed under NWP 14, with associated bank stabilization
authorized by NWP 13, the maximum acreage loss of waters of the United States for the total project
cannot exceed 1/3-acre.
29. Transfer of Nationwide Pen -nit Verifications. If the pennittee sells the property associated with a
nationwide pen -nit verification, the permittee may transfer the nationwide permit verification to the new
owner by submitting a letter to the appropriate Corps district office to validate the transfer. A copy of the
nationwide permit verification must be attached to the letter, and the letter must contain the following
statement and signature:
"When the structures or work authorized by this nationwide permit are still in existence at the time the
property is transferred, the terns and conditions of this nationwide permit, including any special
conditions, will continue to be binding on the new owner(s) of the property. To validate the transfer of
this nationwide permit and the associated liabilities associated with compliance with its terms and
conditions, have the transferee sign and date below."
(Transferee)
(Date)
30. Compliance Certification. Each pennittee who receives an NWP verification letter from the Corps
must provide a signed certification documenting completion of the authorized activity and any required
compensatory mitigation. The success of any required pennittee-responsible mitigation, including the
achievement of ecological performance standards, will be addressed separately by the district engineer.
The Corps will provide the pennittee the certification document with the NWP verification letter. The
certification document will include: (a) A statement that the authorized work was done in accordance with
the NWP authorization, including any general, regional, or activity -specific conditions; (b) A statement
that the implementation of any required compensatory mitigation was completed in accordance with the
permit conditions. If credits from a mitigation bank or in -lieu fee program are used to satisfy the
compensatory mitigation requirements, the certification must include the documentation required by 33
CFR 332.3(1)(3) to confirm that the permittee secured the appropriate number and resource type of
credits; and (c) The signature of the pennittee certifying the completion of the work and mitigation.
31. Pre -Construction Notification. (a) Timing. Where required by the terms of the NWP, the prospective
pennittee must notify the district engineer by submitting a pre -construction notification (PCN) as early as
possible. The district engineer must determine if the PCN is complete within 30 calendar days of the date
of receipt and, if the PCN is determined to be incomplete, notify the prospective pennittee within that 30
day period to request the additional information necessary to make the PCN complete. The request must
specify the information needed to make the PCN complete. As a general rule, district engineers will
request additional information necessary to make the PCN complete only once. However, if the
prospective permittee does not provide all of the requested information, then the district engineer will
notify the prospective permittee that the PCN is still incomplete and the PCN review process will not
commence until all of the requested information has been received by the district engineer. The
prospective permittee shall not begin the activity until either: (1) He or she is notified in writing by the
district engineer that the activity may proceed under the NWP with any special conditions imposed by the
district or division engineer; or (2) 45 calendar days have passed from the district engineer's receipt of the
complete PCN and the prospective permittee has not received written notice from the district or division
engineer. However, if the permittee was required to notify the Corps pursuant to general condition 18 that
listed species or critical habitat might be affected or in the vicinity of the project, or to notify the Corps
pursuant to general condition 20 that the activity may have the potential to cause effects to historic
properties, the permittee cannot begin the activity until receiving written notification from the Corps that
there is "no effect" on listed species or "no potential to cause effects" on historic properties, or that any
consultation required under Section 7 of the Endangered Species Act (see 33 CFR 330.4(f)) and/or
Section 106 of the National Historic Preservation (see 33 CFR 330.4(g)) has been completed. Also, work
cannot begin under NWPs 21, 49, or 50 until the permittee has received written approval from the Corps.
If the proposed activity requires a written waiver to exceed specified limits of an NWP, the permittee
may not begin the activity until the district engineer issues the waiver. If the district or division engineer
notifies the permittee in writing that an individual permit is required within 45 calendar days of receipt of
a complete PCN, the permittee cannot begin the activity until an individual permit has been obtained.
Subsequently, the permittee's right to proceed under the NWP may be modified, suspended, or revoked
only in accordance with the procedure set forth in 33 CFR 330.5(d)(2).
(b) Contents of Pre -Construction Notification: The PCN must be in writing and include the following
information: (1) Name, address and telephone numbers of the prospective permittee; (2) Location of the
proposed project; (3) A description of the proposed project; the project's purpose; direct and indirect
adverse environmental effects the project would cause, including the anticipated amount of loss of water
of the United States expected to result from the NWP activity, in acres, linear feet, or other appropriate
unit of measure; any other NWP(s), regional general permit(s), or individual permit(s) used or intended to
be used to authorize any part of the proposed project or any related activity. The description should be
sufficiently detailed to allow the district engineer to determine that the adverse effects of the project will
be minimal and to determine the need for compensatory mitigation. Sketches should be provided when
necessary to show that the activity complies with the terms of the NWP. (Sketches usually clarify the
project and when provided results in a quicker decision. Sketches should contain sufficient detail to
provide an illustrative description of the proposed activity (e.g., a conceptual plan), but do not need to be
detailed engineering plans); (4) The PCN must include a delineation of wetlands, other special aquatic
sites, and other waters, such as lakes and ponds, and perennial, intermittent, and ephemeral streams, on
the project site. Wetland delineations must be prepared in accordance with the current method required by
the Corps. The permittee may ask the Corps to delineate the special aquatic sites and other waters on the
project site, but there may be a delay if the Corps does the delineation, especially if the project site is
large or contains many waters of the United States. Furthermore, the 45 day period will not start until the
delineation has been submitted to or completed by the Corps, as appropriate; (5) If the proposed activity
will result in the loss of greater than 1/10-acre of wetlands and a PCN is required, the prospective
permittee must submit a statement describing how the mitigation requirement will be satisfied, or
explaining why the adverse effects are minimal and why compensatory mitigation should not be required.
As an alternative, the prospective permittee may submit a conceptual or detailed mitigation plan. (6) If
any listed species or designated critical habitat might be affected or is in the vicinity of the project, or if
the project is located in designated critical habitat, for non -Federal applicants the PCN must include the
name(s) of those endangered or threatened species that might be affected by the proposed work or utilize
the designated critical habitat that may be affected by the proposed work. Federal applicants must provide
documentation demonstrating compliance with the Endangered Species Act; and (7) For an activity that
may affect a historic property listed on, determined to be eligible for listing on, or potentially eligible for
listing on, the National Register of Historic Places, for non -Federal applicants the PCN must state which
historic property may be affected by the proposed work or include a vicinity map indicating the location
of the historic property. Federal applicants must provide documentation demonstrating compliance with
Section 106 of the National Historic Preservation Act.
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(c) Form of Pre -Construction Notification: The standard individual permit application form (Form
ENG 4345) may be used, but the completed application form must clearly indicate that it is a PCN and
must include all of the information required in paragraphs (b)(1) through (7) of this general condition. A
letter containing the required information may also be used.
(d) Agency Coordination: (1) The district engineer will consider any comments from Federal and
state agencies concerning the proposed activity's compliance with the terms and conditions of the NWPs
and the need for mitigation to reduce the project's adverse environmental effects to a minimal level. (2)
For all NWP activities that require pre -construction notification and result in the loss of greater than 1/2-
acre of waters of the United States, for NWP 21, 29, 39, 40, 42, 43, 44, 50, 51, and 52 activities that
require pre -construction notification and will result in the loss of greater than 300 linear feet of
intennittent and ephemeral stream bed, and for all NWP 48 activities that require pre -construction
notification, the district engineer will immediately provide (e.g., via e-mail, facsimile transmission,
overnight mail, or other expeditious manner) a copy of the complete PCN to the appropriate Federal or
state offices (U.S. FWS, state natural resource or water quality agency, EPA, State Historic Preservation
Officer (SHPO) or Tribal Historic Preservation Office (THPO), and, if appropriate, the NMFS). With the
exception of NWP 37, these agencies will have 10 calendar days from the date the material is transmitted
to telephone or fax the district engineer notice that they intend to provide substantive, site -specific
comments. The comments must explain why the agency believes the adverse effects will be more than
minimal. If so contacted by an agency, the district engineer will wait an additional 15 calendar days
before making a decision on the pre -construction notification. The district engineer will fully consider
agency comments received within the specified time frame concerning the proposed activity's compliance
with the terns and conditions of the NWPs, including the need for mitigation to ensure the net adverse
environmental effects to the aquatic environment of the proposed activity are minimal. The district
engineer will provide no response to the resource agency, except as provided below. The district engineer
will indicate in the administrative record associated with each pre -construction notification that the
resource agencies' concerns were considered. For NWP 37, the emergency watershed protection and
rehabilitation activity may proceed immediately in cases where there is an unacceptable hazard to life or a
significant loss of property or economic hardship will occur. The district engineer will consider any
comments received to decide whether the NWP 37 authorization should be modified, suspended, or
revoked in accordance with the procedures at 33 CFR 330.5. (3) In cases of where the prospective
permittee is not a Federal agency, the district engineer will provide a response to NMFS within 30
calendar days of receipt of any Essential Fish Habitat conservation recommendations, as required by
Section 305(b)(4)(B) of the Magnuson -Stevens Fishery Conservation and Management Act. (4)
Applicants are encouraged to provide the Corps with either electronic files or multiple copies of pre -
construction notifications to expedite agency coordination.
District Engineer's Decision
1. In reviewing the PCN for the proposed activity, the district engineer will determine whether the
activity authorized by the NWP will result in more than minimal individual or cumulative adverse
environmental effects or may be contrary to the public interest. For a linear project, this determination
will include an evaluation of the individual crossings to determine whether they individually satisfy the
terms and conditions of the NWP(s), as well as the cumulative effects caused by all of the crossings
authorized by NWP. If an applicant requests a waiver of the 300 linear foot limit on impacts to
intermittent or ephemeral streams or of an otherwise applicable limit, as provided for in NWPs 13, 21, 29,
36, 39, 40, 42, 43, 44, 50, 51 or 52, the district engineer will only grant the waiver upon a written
determination that the NWP activity will result in minimal adverse effects. When making minimal effects
determinations the district engineer will consider the direct and indirect effects caused by the NWP
activity. The district engineer will also consider site specific factors, such as the environmental setting in
the vicinity of the NWP activity, the type of resource that will be affected by the NWP activity, the
functions provided by the aquatic resources that will be affected by the NWP activity, the degree or
magnitude to which the aquatic resources perform those functions, the extent that aquatic resource
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functions will be lost as a result of the NWP activity (e.g., partial or complete loss), the duration of the
adverse effects (temporary or permanent), the importance of the aquatic resource functions to the region
(e.g., watershed or ecoregion), and mitigation required by the district engineer. If an appropriate
functional assessment method is available and practicable to use, that assessment method may be used by
the district engineer to assist in the minimal adverse effects determination. The district engineer may add
case -specific special conditions to the NWP authorization to address site -specific environmental concerns.
2. If the proposed activity requires a PCN and will result in a loss of greater than 1/10-acre of
wetlands, the prospective pennittee should submit a mitigation proposal with the PCN. Applicants may
also propose compensatory mitigation for projects with smaller impacts. The district engineer will
consider any proposed compensatory mitigation the applicant has included in the proposal in detennining
whether the net adverse environmental effects to the aquatic environment of the proposed activity are
minimal. The compensatory mitigation proposal may be either conceptual or detailed. If the district
engineer determines that the activity complies with the terns and conditions of the NWP and that the
adverse effects on the aquatic environment are minimal, after considering mitigation, the district engineer
will notify the permittee and include any activity -specific conditions in the NWP verification the district
engineer deems necessary. Conditions for compensatory mitigation requirements must comply with the
appropriate provisions at 33 CFR 332.3(k). The district engineer must approve the final mitigation plan
before the pennittee commences work in waters of the United States, unless the district engineer
determines that prior approval of the final mitigation plan is not practicable or not necessary to ensure
timely completion of the required compensatory mitigation. If the prospective permittee elects to submit a
compensatory mitigation plan with the PCN, the district engineer will expeditiously review the proposed
compensatory mitigation plan. The district engineer must review the proposed compensatory mitigation
plan within 45 calendar days of receiving a complete PCN and detennine whether the proposed mitigation
would ensure no more than minimal adverse effects on the aquatic environment. If the net adverse effects
of the project on the aquatic environment (after consideration of the compensatory mitigation proposal)
are determined by the district engineer to be minimal, the district engineer will provide a timely written
response to the applicant. The response will state that the project can proceed under the terms and
conditions of the NWP, including any activity -specific conditions added to the NWP authorization by the
district engineer.
3. If the district engineer determines that the adverse effects of the proposed work are more than
minimal, then the district engineer will notify the applicant either: (a) That the project does not qualify for
authorization under the NWP and instruct the applicant on the procedures to seek authorization under an
individual permit; (b) that the project is authorized under the NWP subject to the applicant's submission
of a mitigation plan that would reduce the adverse effects on the aquatic environment to the minimal
level; or (c) that the project is authorized under the NWP with specific modifications or conditions.
Where the district engineer determines that mitigation is required to ensure no more than minimal adverse
effects occur to the aquatic environment, the activity will be authorized within the 45-day PCN period,
with activity -specific conditions that state the mitigation requirements. The authorization will include the
necessary conceptual or detailed mitigation or a requirement that the applicant submit a mitigation plan
that would reduce the adverse effects on the aquatic environment to the minimal level. When mitigation is
required, no work in waters of the United States may occur until the district engineer has approved a
specific mitigation plan or has determined that prior approval of a final mitigation plan is not practicable
or not necessary to ensure timely completion of the required compensatory mitigation.
Further Information
1. District Engineers have authority to determine if an activity complies with the terms and conditions of
an NWP.
2. NWPs do not obviate the need to obtain other federal, state, or local permits, approvals, or
authorizations required by law.
12
3. NWPs do not grant any property rights or exclusive privileges.
4. NWPs do not authorize any injury to the property or rights of others.
5. NWPs do not authorize interference with any existing or proposed Federal project.
C. CORPS SEATTLE DISTRICT REGIONAL GENERAL CONDITIONS
1. Aquatic Resources Requiring Special Protection. Activities resulting in a loss of waters of the United
States in a mature forested wetland, bog, bog -like wetland, aspen -dominated wetland, alkali wetland,
wetlands in a dunal system along the Washington coast, vernal pools, camas prairie wetlands, estuarine
wetlands, and wetlands in coastal lagoons cannot be authorized by a NWP, except by the following
NWPs:
NWP 3 — Maintenance
NWP 20 — Oil Spill Cleanup
NWP 32 — Completed Enforcement Actions
NWP 38 — Cleanup of Hazardous and Toxic Waste
In order to use one of the above -referenced NWPs in any of the aquatic resources requiring special
protection, you must submit a pre -construction notification to the District Engineer in accordance with
Nationwide Permit General Condition 31 (Pre -Construction Notification) and obtain written approval
before commencing work.
2. Commencement Bay. The following NWPs may not be used to authorize activities located in the
Commencement Bay Study Area (see Figure 1 at www.nws.usace.anny.mil, select Regulatory Pen -nits
then Permit Guidebook, then Nationwide Permits) requiring Department of the Army authorization:
NWP 12 — Utility Line Activities (substations)
NWP 13 — Bank Stabilization
NWP 14 — Linear Transportation Projects
NWP 23 — Approved Categorical Exclusions
NWP 29 — Residential Developments
NWP 39 — Commercial and Institutional Developments
NWP 40 — Agricultural Activities
NWP 41 — Reshaping Existing Drainage Ditches
NWP 42 — Recreational Facilities
NWP 43 — Stormwater Management Facilities
3. New Bank Stabilization Prohibition Areas in Tidal Waters of Puget Sound. Activities involving new
bank stabilization in tidal waters in Water Resource Inventory Areas (WRIAs) 8, 9, 10, 11, and 12 (within
the specific area identified on Figure 2 at www.nws.usace.arTny.mil, select Regulatory Permits then
Permit Guidebook, then Nationwide Permits) cannot be authorized by a NWP.
4. Bank Stabilization. Any project including new or maintenance bank stabilization activities requires
pre -construction notification to the District Engineer in accordance with Nationwide Permit General
Condition 31 for Pre -Construction Notification. This requirement does not apply to maintenance work
exempt by 33 CFR 323.4 (a)(2). Each notification must also include the following information:
a. Need for the work, including the cause of the erosion and the threat posed to structures,
infrastructure, and/or public safety. The notification must also include a justification for the need to place
fill or structures waterward of the line of the Corps' jurisdiction (typically, the ordinary high water mark
or mean higher high water mark).
13
b. Current and expected post -project sediment movement and deposition patterns in and near the
project area. In tidal waters, describe the location and size of the nearest bluff sediment sources (feeder
bluffs) to the project area and current and expected post -project nearshore drift patterns in the project
area.
c. Current and expected post -project habitat conditions, including the presence of fish, wildlife and
plant species, submerged aquatic vegetation, spawning habitat, and special aquatic sites (e.g., vegetated
shallows, riffle and pool complexes, or mudflats) in the project area.
d. In rivers and streams, an assessment of the likely impact of the proposed work on upstream,
downstream and cross -stream properties (at a minimum the area assessed should extend from the nearest
upstream bend to the nearest downstream bend of the watercourse). Discuss the methodology used for
determining effects. The Corps reserves the right to request an increase in the reach assessment area to
fully address the relevant ecological reach and associated habitat.
e. For new bank stabilization activities in rivers and streams, describe the type and length of existing
bank stabilization within 300 feet up and downstream of the project area. In tidal areas, describe the type
and length of existing bank stabilization within 300 feet along the shoreline on both sides of the project
area.
f. Demonstrate the proposed project incorporates the least environmentally damaging practicable
bank protection methods. These methods include, but are not limited to, the use of bioengineering,
biotechnical design, root wads, large woody material, native plantings, and beach nourishment in certain
circumstances. If rock must be used due to site erosion conditions, explain how the bank stabilization
structure incorporates elements beneficial to fish. If the Corps determines you have not incorporated the
least environmentally damaging practicable bank protection methods and/or have not fully compensated
for impacts to aquatic resources, you must submit a compensatory mitigation plan to compensate for
impacts to aquatic resources.
g. A planting plan using native riparian plant species unless the applicant demonstrates a planting
plan is not appropriate or not practicable.
5. Crossings of Waters of the United States. Any project including installing, replacing, or modifying
crossings of waters of the United States, such as culverts, requires pre -construction notification to the
District Engineer in accordance with Nationwide Permit General Condition 31 for Pre -Construction
Notification. This requirement does not apply to maintenance work exempt by 33 CFR 323.4 (a)(2).
Each notification must also include the following information:
a. Need for the crossing.
b. Crossing design criteria and design methodology.
c. Rationale behind using the specific design method for the crossing.
6. Cultural Resources and Human Burials. Permittees must immediately stop work and notify the
District Engineer within 24 hours if, during the course of conducting authorized work, human burials,
cultural resources, or historic properties, as identified by the National Historic Preservation Act, are
discovered. Failure to stop work in the area of discovery until the Corps can comply with the provisions
of 33 CFR 325 Appendix C, the National Historic Preservation Act, and other pertinent laws and
14
regulations could result in a violation of state and federal laws. Violators are subject to civil and criminal
penalties.
7. Essential Fish Habitat. An activity which may adversely affect essential fish habitat, as identified
under the Magnuson -Stevens Fishery Conservation and Management Act (MSA), may not be authorized
by NWP until essential fish habitat requirements have been met by the applicant and the Corps. Non-
federal pennittees shall notify the District Engineer if essential fish habitat may be affected by, or is in the
vicinity of, a proposed activity and shall not begin work until notified by the District Engineer that the
requirements of the essential fish habitat provisions of the MSA have been satisfied and the activity is
authorized. The notification must identify the type(s) of essential fish habitat (e.g., Pacific salmon,
groundfish, and/or coastal -pelagic species) managed by a Fishery Management Plan that may be affected.
Information about essential fish habitat is available at www.nwr.noaa.gov/.
8. Vegetation Protection and Restoration. Permittees must clearly mark all construction area boundaries
before beginning work. The removal of native vegetation in riparian areas and wetlands, and the removal
of submerged aquatic vegetation in estuarine and tidal areas must be avoided and minimized to the
maximum extent practicable. Areas subject to temporary vegetation removal shall be replanted with
appropriate native species by the end of the first planting season following the disturbance except as
waived by the District Engineer. If an aquaculture area is permitted to impact submerged aquatic
vegetation under NWP 48, the aquaculture area does not need to be replanted with submerged aquatic
vegetation.
9. Access. You must allow representatives of this office to inspect the authorized activity at any time
deemed necessary to ensure the work is being, or has been, accomplished in accordance with the terms
and conditions of your permit.
10. Contractor Notification of Permit Requirements. The permittee must provide a copy of the
nationwide permit verification letter, conditions, and permit drawings to all contractors involved with the
authorized work, prior to the commencement of any work in waters of the U.S.
D. CORPS REGIONAL SPECIFIC CONDITIONS FOR THIS NWP
1. When backfilling trenches in wetlands, no more than 10 percent of the soil used to backfill the top 12
inches of the trench may consist of subsurface soil.
2. The permittee must submit a pre -construction notification to the District Engineer in accordance with
Nationwide Permit General Condition 31 (Pre -Construction Notification) for mechanized landclearing in
a forested wetland for the construction of a substation.
3. A pre -construction notification must include drawings and/or a description of the measures that will be
used to prevent permanent drainage of adjacent areas by the backfilled trench and/or along the buried
utility line.
E. STATE 401 CERTIFICATION GENERAL CONDITIONS:
1. For in -water construction activities. Individual401 review is required for projects or activities
authorized under NWPs that will cause, or be likely to cause or contribute to an exceedence of a State
water quality standard (WAC 173-201A) or sediment management standard (WAC 173-204).
Note: State water quality standards are posted on Ecology's website:
http:/hvww.ecv.vva.gov/programslivglsivgsl.. Click "Surface Water Criteria" forfreshwaterand
15
marine water standards. Sediment management standards are posted on Ecology's website:
http:/hvlvvi,.ecy.iva.gov/bibliohvac]73204.htinl. Information is also available by contacting
Ecology's Federal Permit staff.
2. Projects or Activities Discharging to Impaired Waters. Individual 401 review is required for
projects or activities authorized under NWPs if the project or activity will occur in a 303(d) listed
segment of a waterbody or upstream of a listed segment and may result in further exceedences of the
specific listed parameter.
Note: To determine if your project or activity is in a 303(d) listed segment of a waterbody, visit
Ecology's Water Quality Assessment webpage for maps and search tools,
http:/hvianv.ecy.ia,a.gov/prograins/vvgl303dl2008l.. Information is also available by contacting
Ecology's Federal Permit staff.
3. Notification. For projects or activities that will require Individual 401 review, applicants must
provide Ecology with the same documentation provided to the Corps (as described in Corps
Nationwide Permit General Condition 31, Pre -Construction Notification), including, when applicable:
(a) A description of the project, including site plans, project purpose, direct and indirect adverse
environmental effects the project would cause, and any other Department of the Army permits
used or intended to be used to authorize any part of the proposed project or any related activity.
(b) Delineation of special aquatic sites and other waters of the United States. Wetland delineations
must be prepared in accordance with the current method required by the Corps and shall include
Ecology's Wetland Rating form. Wetland rating forms are subject to review and verification by
Ecology staff.
Note: Wetland rating forms are available on Ecology's Wetlands website:
hitp://wwiv.ecy.vva.gov/programs/sea/wetlands/ratingsysteins or by contacting Ecology's Federal
Permit staff.
(c) A statement describing how the mitigation requirement will be satisfied. A conceptual or detailed
mitigation or restoration plan may be submitted.
Mitigation plans submitted for Ecology review and approval shall be based on the guidance
provided in Wetland Mitigation in Washington State, Parts 1 and 2 (Ecology Publications #06-06-
011 a and #06-06-011 b).
(d) Coastal Zone Management Program "Certification of Consistency" Form if the project is located
within a coastal county (Clallam, Grays Harbor, Island, Jefferson, King, Kitsap, Mason, Pacific,
Pierce, San Juan, Skagit, Snohomish, Thurston, Wahkiakum, and Whatcom counties).
Note: CZM Certification of Consistency forms are available on Ecology's Federal Permit
website: http://wwtil,.ecy.wa.gov/programs/sea/_Fed permit/index.html or by contacting Ecology's
Federal Permit staff.
(e) Other applicable requirements of Corps Nationwide Permit General Condition 31, Corps
Regional Conditions, or notification conditions of the applicable NWP.
Note: Ecology has 180 days from receipt of applicable documents noted above and a copy of the
final authorization letter from the Corps providing coverage for a proposed project or activity
16
under the NWP Program to issue a WQC and CZM consistency determination response. If more
than 180 days pass after Ecology's receipt of these documents, your requirement to obtain an
individual WQC and CZM consistency determination response becomes waived.
4. Aquatic resources requiring special protection. Certain aquatic resources are unique, difficult -to -
replace components of the aquatic environment in Washington State. Activities that would affect
these resources must be avoided to the greatest extent possible. Compensating for adverse impacts to
high value aquatic resources is typically difficult, prohibitively expensive, and may not be possible in
some landscape settings.
Individual 401 review is required for activities in or affecting the following aquatic resources (and not
prohibited by Regional Condition 1):
(a) Wetlands with special characteristics (as defined in the Washington State Wetland Rating Systems
for western and eastern Washington, Ecology Publications #04-06-025 and #04-06-015):
• Estuarine wetlands
• Natural Heritage wetlands
• Bogs
• Old -growth and mature forested wetlands
• Wetlands in coastal lagoons
• Interdunal wetlands
• Vernal pools
• Alkali wetlands
(b) Fens, aspen -dominated wetlands, camas prairie wetlands, and marine water with eelgrass (Zostera
marina) beds (except for NWP 48).
(c) Category 1 wetlands
(d) Category II wetlands with a habitat score > 29 points. This State General Condition does not
apply to the following Nationwide Permits:
NWP 20 — Response Operations for Oil and Hazardous Substances
NWP 32 — Completed Enforcement Actions
5. Mitigation. For projects requiring Individual 401 review, adequate compensatory mitigation must
be provided for wetland and other water quality -related impacts of projects or activities authorized
under the NWP Program.
(a) Mitigation plans submitted for Ecology review and approval shall be based on the guidance
provided in Wetland Mitigation in Washington State, Parts 1 and 2 (Ecology Publications #06-06-
011 a and #06-06-011 b) and shall, at a minimum, include the following:
i. A description of the measures taken to avoid and minimize impacts to wetlands and other
waters of the U.S.
ii. The nature of the proposed impacts (i.e., acreage of wetlands and functions lost or degraded)
iii. The rationale for the mitigation site that was selected
17
iv. The goals and objectives of the compensatory mitigation project
v. How the mitigation project will be accomplished, including construction sequencing, best
management practices to protect water quality, proposed performance standards for measuring
success and the proposed buffer widths
vi. How it will be maintained and monitored to assess progress towards goals and objectives.
Monitoring will generally be required for a minimum of five years. For forested and scrub -
shrub wetlands, 10 years of monitoring will often be necessary.
vii. How the compensatory mitigation site will be legally protected for the long term.
Refer to Wetland Mitigation in Washington State — Part 2: Developing Mitigation Plans (Ecology
Publication #06-06-01 lb) for guidance on developing mitigation plans.
Ecology encourages the use of alternative mitigation approaches, including advance mitigation and other
programmatic approaches such as mitigation banks and programmatic mitigation areas at the local level.
If you are interested in proposing use of an alternative mitigation approach, consult with the appropriate
Ecology regional staff person. (see http://www.ecy.wa.gov/programs/sea/wetlands/contacts.htm)
Information on the state wetland mitigation banking program is available on Ecology's website:
http://www.ecy.wa.gov/programs/sea/wetlands/mitigation/banking/index.htmi
6. Temporary Fills. Individual 401 review is required for any project or activity with temporary fill in
wetlands or other waters of the State for more than 90 days, unless the applicant has received written
approval from Ecology.
Note: This State General Condition does not apply to projects or activities authorized under NWP 33,
Temporary Construction, Access, and Deivatering
7. Stormwater discharge pollution prevention: All projects that involve land disturbance or
impervious surfaces must implement prevention or control measures to avoid discharge of pollutants
in stormwater runoff to waters of the state. For land disturbances during construction, the permittee
must obtain and implement permits where required and follow Ecology's current stormwater manual.
Note: Stormwater permit information is available at Ecology's Water Quality website:
http://wivw.ecy.iva.gov/programs/wglstormtivaterlindex.htnzl. Ecology's Stormwater Management and
Design Manuals are available at:
http://wwii,.ecy.iva.gov/programs/wqlstormwater/municipallStr•mivtrMan.html. Information is also
available by contacting Ecology's Federal Permit staff.
8. State Certification for PCNs not receiving 45-day response. In the event the U.S. Army Corps of
Engineers does not respond to a complete pre -construction notification within 45 days, the applicant
must contact Ecology for Individual 401 review.
F. STATE 401 CERTIFICATION SPECIFIC CONDITIONS FOR THIS NWP: Certified subject to
conditions. Permittee must meet Ecology 401 General Conditions. Individual 401 review required for
projects or activities authorized under this NWP if:
1. The entire utility line project or activity impacts more than acre of wetlands.
18
Note: Projects or activities that need a FERC license will be required to obtain an Individual 401
Certification as part of the FERC license process.
G. EPA 401 CERTIFICATION GENERAL CONDITIONS:
A. Any activities in the following types of wetlands and waters of the United States will need to apply
for an individual 401 certification: Mature forested wetlands, bogs, bog -like wetlands, wetlands in dunal
systems along the Washington coast, coastal lagoons, vernal pools, aspen -dominated wetlands, alkali
wetlands, camas prairie wetlands, estuarine wetlands, including salt marshes, and marine waters with
eelgrass or kelp beds.
B. A 401 certification determination is based on the project or activity meeting established turbidity
levels. The EPA will be using as guidance the state of Washington's water quality standards [WAC 173-
201 a] and sediment quality standards [WAC 173-204]. Projects or activities that are expected to exceed
these levels or that do exceed these levels will require an individual 401 certification.
The water quality standards allow for short-term turbidity exceedances after all necessary Best
Management Practices have been implemented (e.g., properly placed and maintained filter fences, hay
bales and/or other erosion control devices, adequate detention of runoff to prevent turbid water from
flowing off -site, providing a vegetated buffer between the activity and open water, etc.), and only up to
the following limits:
Wetted Stream Width at Discharge Point
Approximate Downstream Point for
Determining Compliance
Up to 30 feet
50 feet
>30 to 100 feet
100 feet
> 100 feet to 200 feet
200 feet
>200 feet
300 feet
LAKE, POND, RESERVOIR
Lesser of 100 feet or maximum surface
dimension
C. 401 certification of projects and activities under NWPs will use Washington State Department of
Ecology's most recent stormwater manual or an EPA approved equivalent manual as guidance in meeting
water quality standards.
D. For projects and activities requiring coverage under an NPDES permit, certification is based on
compliance with the requirements of that permit. Projects and activities not in compliance with NPDES
requirements will require individual 40 1 certification.
E. Individual 401 certification is required for projects or activities authorized under NWPs if the
project will discharge to a waterbody on the list of impaired waterbodies (the 303(d) List) and the
discharge may result in further exceedance of a specific parameter the waterbody is listed for. The EPA
shall make this determination on a case -by -case basis.
For projects or activities that will discharge to a 303(d)-listed waterbody that does not have an
approved Total Maximum Daily Load (TMDL) or an approved water quality management plan, the
applicant must provide documentation for EPA approval showing that the discharge will not result in
further exceedance of the listed contaminant or impairment.
19
For projects or activities that will discharge to a 303(d)-listed waterbody that does not have an
approved TMDL, the applicant must provide documentation for EPA approval showing that the discharge
is within the limits established in the TMDL. The current list of 303(d)-listed waterbodies in Washington
State will be consulted in making this determination and is available on Ecology's web site at:
www.ecy.wa.gov/programs/wq/303d/2012/index.html
The EPA may issue 401 certification for projects or activities that would result in further exceedance
or impairment if mitigation is provided that would result in a net decrease in listed contaminants or less
impairment in the waterbody. This determination would be made during individual 401 certification
review.
F. For projects requiring individual 401 certification, applicants must provide the EPA with the same
documentation provided to the Corps, (as described in Corps' National General Condition 31, Pre -
Construction Notification), including, when applicable:
(a) A description of the project, including site plans, project purpose, direct and indirect adverse
environmental effects the project would cause, any other U.S. Department of the Army
permits used or intended to use to authorize any part of the proposed project or any related
activity.
(b) Delineation of special aquatic sites and other waters of the United States. Wetland
delineations must be prepared in accordance with the current method required by the Corps.
(c) A statement describing how the mitigation requirement will be satisfied. A conceptual or
detailed mitigation or restoration plan may be submitted.
(d) Other applicable requirements of Corps National General Condition 31, Corps Regional
Conditions, or notification conditions of the applicable NWP.
A request for individual 401 certification- review is not complete until the EPA receives the
applicable documents noted above and the EPA has received a copy of the final authorization letter from
the Corps providing coverage for a proposed project or activity under the NWP Program.
G. No activity, including structures and work in navigable waters of the United States or discharges
of dredged or fill material, may consist of unsuitable material (e.g., trash, debris, car bodies, asphalt, etc.)
and material used for construction or discharged must be free from toxic pollutants in toxic amounts (see
Section 307 of the Clean Water Act).
H. An individual 401 certification is based on adequate compensatory mitigation being provided for
aquatic resource and other water quality -related impacts of projects or activities authorized under the
NWP Program.
A 401 certification is contingent upon written approval from the EPA of the compensatory
mitigation plan for projects and activities resulting in any of the following:
• impacts to any aquatic resources requiring special protection (as defined in EPA General
Condition A or Corps General Regional Condition 1)
• any impacts to tidal waters or non -tidal waters adjacent to tidal waters (applies to NWP 14)
• Or, any impacts to aquatic resources greater than '/ acre.
20
Compensatory mitigation plans submitted to the EPA shall be based on the Joint Agency guidance
provided in Wetland Mitigation in Washington State, Parts I and 2 (Ecology Publication #06-06-01 1 a
and #06-06-011 b) and shall, at a minimum, include the following:
(1) A description of the measures taken to avoid and minimize impacts to wetlands and other
waters of the U.S.
(2) The nature of the proposed impacts (i.e., acreage of wetlands and functions lost or degraded)
(3) The rationale for the mitigation site that was selected
(4) The goals and objectives of the compensatory mitigation project
(5) How the mitigation project will be accomplished, including proposed performance standards
for measuring success (including meeting planting success standard of 80 percent survival
after five years), evidence for hydrology at the mitigation site, and the proposed buffer
widths;
(6) How it will be maintained and monitored to assess progress towards goals and objectives.
(7) Completion and submittal of an "as -built conditions report" upon completion of grading,
planting and hydrology establishment at the mitigation site;
(8) Completion and submittal of monitoring reports at years 3 and 5 showing the results of
monitoring for hydrology, vegetation types, and aerial cover of vegetation.
(9) For forested and scrub -shrub wetlands, 10 years of monitoring will often be necessary.
(10) Documentation of legal site protection mechanism (covenant or deed restriction) to show
how the compensatory mitigation site will be legally protected for the long-term.
I. An individual 401 certification is required for any activity where temporary fill will remain in
wetlands or other waterbodies for more than 90 days. The 90 day period begins when filling activity starts
in the wetland or other waterbody.
J. An individual 401 is required for any proposed project or activity in waterbodies on the most
current list of the following Designated Critical Resource Waters (per Corps General Condition 22).
K. An individual 401 certification is required for any proposed project that would increase permanent,
above -grade fill within the 100-year floodplain (including the floodway and the flood fringe).
[Note: The 100-year floodplain is defined as those areas identified as Zones A, Al-30, AE, AH,
AO, A99, V, V 1-30, and VE on the most current Federal Emergency Management Agency Flood
Rate Insurance Maps, or areas identified as within the 100-year floodplain on applicable local
Flood Management Program maps. The 100-year flood is also known as the flood with a 100-year
recurrence interval, or as the flood with an exceedance probability of 0.01.]
H. EPA 401 CERTIFICATION SPECIFIC CONDITIONS FOR THIS NWP: Partially denied without
prejudice. Permittee must meet EPA 401 General Conditions. Individual 401 certification required for
projects authorized under this NWP if:
1. Any excavation or dredging activities affecting open water areas (e.g., trenching across
streams), or
2. There are any permanent access roads, temporary structures or fill associated with the utility
line activities, or
3. The entire scope of the project involves greater than 1/10 acre of impacts to aquatic
resources.
PA
I. COASTAL ZONE MANAGEMENT CONSISTENCY RESPONSE FOR THIS NWP: Concur, subject
to the following condition: When individual 401 review is triggered, a CZM Certificate of Consistency
form must be submitted for project located within the 15 coastal counties (See State General 401
Condition 3 (Notification)).
22
REPLY TO
ATTENTION OF
Regulatory Branch
Dave Christensen
City of Renton Public Works
1055 South Grady Way
Renton, Washington 98057
Dear Mr. Christensen:
DEPARTMENT OF THE ARMY
SEATTLE DISTRICT, CORPS OF ENGINEERS
P.O. BOX 3755
SEATTLE, WASHINGTON 98124-3755
JAN 1 4 2013
RECEIVED
JAN 16 2013
CITY OF RENTON
UTILITY SYSTEMS
Reference: NWS-2011-967
Renton Public Works
In the email dated November 9, 2012, your agent requested a time extension for the
verification of the referenced Nationwide Permit (NWP) 12 verification issued to you on
March 15, 2012. The work authorized was to place 30 cubic yards of fill in Stewart Creek for a
sewer line construction at Renton, in King County, Washington. You also requested a permit
modification to the NWP verification. Based on the information you provided to us, NWP 12,
Utility Line Activities (Federal Register, February 21, 2012, Vol. 77, No. 34), authorizes your
proposal as depicted on the enclosed drawings dated July 2011. In order for this NWP
authorization to be valid, you must ensure the work is performed in accordance with the enclosed
NWP 12, Terms and Conditions and the following special condition:
a. You must implement and abide by the Endangered Species Act (ESA) requirements
and/or agreements set forth in the Letter of No Effect, dated August, in their entirety. The U.S.
Army Corps of Engineers (Corps) made a determination of No Effect for all species based on
this document. Failure to comply with the commitments made in this document constitutes
non-compliance with the ESA and your Corps permit. As stated in your application, you may
conduct the authorized activities from June 1 through September 30 in any year this permit is
valid. You shall not conduct work authorized by this permit from October 1 through May 31 in
any year this permit is valid.
Please note that Seattle District NWP Regional General Condition 5, Cultural Resources and
Human Burials, found in the NWP Terms and Conditions enclosure, details procedures should an
inadvertent discovery occur. You must ensure that you comply with this condition during the
construction of your project.
The authorized work complies with the Washington State Department of Ecology's
(Ecology) Water Quality Certification and the Coastal Zone Management Act requirements for
this NWP. No further coordination with Ecology is required.
We have reviewed your project pursuant to the requirements of the ESA and the
-2-
Magnuson-Stevens Fishery Conservation and Management Act in regards to Essential Fish
Habitat (EFH). We have determined that this project complies with the requirements of the
NWP National General Condition regarding ESA and will not adversely affect EFH.
We have prepared and enclosed a Preliminary Jurisdictional Determination (JD), which is a
written indication that wetlands and waterways within your project area may be waters of the
United States. Such waters will be treated as jurisdictional waters of the U.S. for purposes of
computation of impact area and compensatory mitigation requirements associated with your
permit application. If you believe the Preliminary JD is inaccurate, you may request an
Approved JD, which is an official determination regarding the presence or absence of waters of
the United States. If one is requested, please be aware that we may require the submittal of
additional information to complete an approved JD and work authorized in this letter may not
occur until the approved JD has been finalized.
This verification is valid until the NWP is modified, reissued, or revoked. All of the
existing NWPs are scheduled to be modified, reissued, or revoked on March 18, 2012. It is
incumbent upon you to remain informed of changes to the NWPs. We will issue a public notice
when the NWPs are reissued. Furthermore, if you commence or are under contract to commence
this activity before March 18, 2012, you will have until March 18, 2013, to complete the activity
under the present terms and conditions of this NWP.
Upon completing the authorized work, you must fill out and return the enclosed Certificate
of Compliance with Department of the Army Permit form. Thank you for your cooperation
during the permit process. We are interested in your experience with our Regulatory Program
and encourage you to complete a customer service survey form. This form and information
about our program is available on our website at: http://www.nws.usace.army.miU select
"Regulatory Branch, Permit Information" and then "Forms". A copy of this letter without
enclosures will be furnished to Ms. Sara Noland, ESA, at 5309 Shilshole Avenue Northwest,
Suite 200, Seattle, Washington 98107. If you have any questions, please contact me at
lori.c.lull@usace.army.mil or (206) 316-3153.
Sinc ely,
(: I
Lori C. Lull, P Ject Manager
Regulatory Branch
Enclosures
`4
�r1T Op
rfG'STAih:S Of P�v •
Regulatory Branch
Dave Christensen
City of Renton Public Works
1055 South Grady Way
Renton, Washington 98057
Dear Mr. Christensen:
DEPARTMENT OF THE ARMY
SEATTLE DISTRICT, CORPS OF ENGINEERS
P.O. BOX RECEIVED
SEATTLE, WASHINGTON ON 98124-3755
JAN 0 9 2013 JAN 1 1 2013
CITY OF RENTON
UTILITY SYSTEMS
�` P
Zf-
0
Reference:
NWS-2011-967
Renton Public Works
In the email dated November 9, 2012, your agent requested a time extension for the
verification of the referenced Nationwide Permit (NWP) 12 verification issued to you on
March 15, 2012. The work authorized was to place 30 cubic yards of fill in Stewart Creek for a
sewer line construction at Renton, in King County, Washington. You requested a permit
modification to for a time extension of the NWP verification. Based on the information you
provided to us, NWP 12, Utility Line Activities (Federal Register, February 21, 2012, Vol. 77,
No. 34), authorizes your proposal as depicted on the enclosed drawings dated July 2011. In
order for this NWP authorization to be valid you must ensure the work is performed in
accordance with the enclosed NWP 12, Term'and Conditions and the following special
condition:
a. You must implement and abide by the En ang
and/or agreements set forth in the Letter of No Ef ct,
Army Corps of Engineers (Corps) made a determin i
this document. Failure to comply with the commitm
non-compliance with the ESA and your Corps permit.
conduct the authorized activities from June 1 through
valid. You shall not conduct work authorized by this
any year this permit is valid.
-red Species Act (ESA) requirements
dated August, in their entirety. The U.S.
>n of No Effect for all species based on
its made in this document constitutes
s stated in your application, you may
3 tember 30 in any year this permit is
)ehpit from October 1 through May 3 in
Please note that Seattle District NWP Regional General Condition 5, Cultural Resources and
Human Burials, found in the NWP Terms and Conditions enclosure, details procedures should an
inadvertent discovery occur. You must ensure that you comply with this condition during the
construction of your project.
The authorized work complies with the Washington State Department of Ecology's
(Ecology) Water Quality Certification and the Coastal Zone Management Act requirements for
this NWP. No further coordination with Ecology is required.
-2-
We have reviewed your project pursuant to the requirements of the ESA and the
Magnuson -Stevens Fishery Conservation and Management Act in regards to Essential Fish
Habitat (EFH). We have determined that this project complies with the requirements of the
NWP National General Condition regarding ESA and will not adversely affect EFH.
We have prepared and enclosed a Preliminary Jurisdictional Determination (JD), which is a
written indication that wetlands and waterways within your project area may be waters of the
United States. Such waters will be treated as jurisdictional waters of the U.S. for purposes of
computation of impact area and compensatory mitigation requirements associated with your
permit application. If you believe the Preliminary JD is inaccurate, you may request an
Approved JD, which is an official determination regarding the presence or absence of waters of
the United States. If one is requested, please be aware that we may require the submittal of
additional information to complete an approved JD and work authorized in this letter may not
occur until the approved JD has been finalized.
This verification is valid until th� NWP is modified, reissued, or revoked. All of the
existing NWPs are scheduled to be m ified, reissued, or revoked on March 18, 2012. It is
incumbent upon you to remain inform
e of changes to the NWPs. We will issue a public notice
when the NWPs are reissued. Furthermo e, if you commence or are under contract to commence
this activity before March 18, 2012, you 'll have until March 18, 2013, to complete the activity
under the present terms and conditions of 's NWP.
Upon completing the authorized work, y u must fill out and return the enclosed Certificate
of Compliance with Department of the Army P mit form. Thank you for your cooperation
during the permit process. We are interested in our experience with our Regulatory Program
and encourage you to complete a customer servic survey form. This form and information
about our program is available on our website at: tt ://www.nws.usace.arm .mil/ select
"Regulatory Branch, Permit Information" and then ` orms". A copy of this letter without
enclosures will be furnished to Ms. Sara Noland, ES , at 5309 Shilshole Avenue Northwest,
Suite 200, Seattle, Washington 98107. If you have any questions, please contact me at
lori.c.lull@usace.army.mil or (206) 316-3153.
Sincerely,
Lori C. Lull, Project Manager
Regulatory Branch
Enclosures
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PURPOSE: Restore stream SITE PLAN PROPOSED: East Renton Lift Station
affected by temporary equipment SITE LOCATION ADDRESS: Elimination — remove existing pump station
crossing and pipeline trenching. and install gravity sewer line
In and adjacent to Maplewood Park,
DATUM: NAVD 1988 King County and City of Renton, IN: Section 14, Township 23, Range 5 East
Washington COUNTY: King STATE: WA
SHEET: 2 of 8
DATE: July 2011
SACKS SHALL BE #1D JUTE BURLAP
OR APPROVED ALTERNATE FILLED
WITH 48 TO 55 LBS. OF PEA GRAVEL
BACKFILL FOR DRAINS.
INSTALL APPROXIMATELY 3 FEET
ABOVE CHANNEL INVERT. ALIGN
LOW POINT IN DAM WITH CENTER
OF CHANNEL.
A ADD VISOUEEN - -
THROUGH FILLED
BURLAP SACK STACK
FLOWLINE
PLACE SACKS FIRMLY
AGAINST GROUND LINE
AND ADJACENTSACKS.
PLAN SECTION A
STREAM DEWATERING COFFERDAM DETAIL TYP
C-OB SCALE: NTS
FILE: 8235C10-C-08
r 4 10 14
—1 — `�=El
12
FR
905
) F\JJ
A STREAM DEWATERING PLAN
3 C12 SCALE: 1' - 10'-0'
FILE: 8235000-C-100 See Sheet 4 for Key Notes.
w
f
w See Appendix A of Stream and Buffer Mitigation Plan for enlarged drawings.
PURPOSE: Restore stream WORK AREA ISOLATION & PROPOSED: East Renton Lift Station
affected by temporary equipment STREAMFLOW DIVERSION Elimination — remove existing pump station
crossing and pipeline trenching. and install gravity sewer line
DATUM: NAVD 1988 SITE LOCATION ADDRESS: IN: Section 14, Township 23, Range 5 East
In and adjacent to Maplewood Park, COUNTY: King STATE: WA
King County and City of Renton,
Washington SHEET: 3 of 8
DATE: July 2011
KEY NOTES:
OTHE FILTER FABRIC SHALL BE PURCHASED IN A CONTINUOUS ROLL CUT TO THE LENGTH OF THE BARRIER TO AVOID USE OF
JOINTS. WHEN JOINTS ARE NECESSARY, FILTER CLOTH SHALL BE SPLICED TOGETHER ONLY AT A SUPPORT POST, WITH A
MINIMUM 6-INCH OVERLAP, AND BOTH ENDS SECURELY FASTENED TO THE POST.
OTHE FILTER FABRIC FENCE SHALL BE INSTALLED TO FOLLOW THE CONTOURS (WHERE FEASIBLE). THE FENCE POSTS SHALL
BE SPACED A MAXIMUM OF 6 FEET APART AND DRIVEN SECURELY INTO THE GROUND (MINIMUM OF 30 INCHES).
OA TRENCH SHALL BE EXCAVATED, ROUGHLY 8 INCHES WIDE AND 12 INCHES DEEP, UPSLOPE AND ADJACENT TO THE WOOD
POST TO ALLOW THE FILTER FABRIC TO BE BURIED.
O4 WHEN STANDARD STRENGTH FILTER FABRIC IS USED, A WIRE MESH SUPPORT FENCE SHALL BE FASTENED SECURELY TO
THE UPSLOPE SIDE OF THE POSTS USING HEAVY-DUTY WIRE STAPLES AT LEAST 1 INCH LONG, TIE WIRES OR HOG RINGS.
THE WIRE SHALL EXTEND INTO THE TRENCH A MINIMUM OF 4 INCHES AND SHALL NOT EXTEND MORE THAN 36 INCHES
ABOVE THE ORIGINAL GROUND SURFACE.
ZTHE STANDARD STRENGTH FILTER FABRIC SHALL BE STAPLED OR WIRED THE FENCE, AND 20 INCHES OF THE FABRIC SHALL
BE EXTENDED INTO THE TRENCH. THE FABRIC SHALL NOT EXTEND MORE THAN 36 INCHES ABOVE THE ORIGINAL GROUND
SURFACE. FILTER FABRIC SHALL NOT BE STAPLED TO EXISTING TREES.
OWHEN EXTRA -STRENGTH FILTER FABRIC AND CLOSER POST SPACING ARE USED, THE WIRE MESH SUPPORT FENCE MAY BE
ELIMINATED. IN SUCH A CASE, THE FILTER FABRIC IS STAPLED OR WIRED DIRECTLY TO THE POSTS.
OTHE TRENCH SHALL BE BACKFILLED WITH 3/4-INCH MINIMUM DIAMETER WASHED GRAVEL.
OINSTALL UPSTREAM SCREENED DIVERSION PUMP. PUMP SHALL, AT A MINIMUM, BE A 6 INCH GAS POWERED TRASH PUMP,
SUFFICIENT TO HANDLE EXPECTED STREAM FLOWS OF 0.5 TO 3 CUBIC FEET PER SECOND INCLUDING FLEXIBLE PIPE
SYSTEM.
OSELECT DISCHARGE POINT DOWNSTREAM OF IMPACTED AREA TO AVOID EROSION. LINE DISCHARGE AREA WITH VISQUEEN
OR EQUIVALENT TO DISSIPATE FLOW ENERGY AND PREVENT CHANNEL SCOUR.
1p INSTALL UPSTREAM COFFERDAM WITH LOW POINT ALIGNED WITH CENTER OF ACTIVE CHANNEL. COORD LOCATION WITH
TEMPORARY STREAM CROSSING.
11 INSTALL DOWNSTREAM COFFERDAM BELOW IMPACTED AREA.
12 COMPLETE ALL IN WATER WORK, GRADE SITE AND INSTALL COIR LOGS OR COIR BLANKET WHILE CHANNEL IS DE -WATERED.
WORK SHALL BE COMPLETED AFTER INSTALLATION OF PIPELINE AND DURING REMOVAL OF TEMPORARY STREAM
CROSSING.
13 WHERE DEWATERING PIPE CROSSES EQUIPMENT CROSSING OR INTERFERES WITH CONSTRUCTION, BURY PIPE IN A
TRENCH AND COVER WITH STEEL PLATES.
14 USE HIGH VISIBILITY FENCING TO DELINEATE IN -STREAM LIMIT OF WORK.
15 PIPE BEDDING AND BACKFILL PER CITY STD PLAN 405, NATIVE BACKFILL WHERE INDICATED.
PURPOSE: Restore stream KEY NOTES FOR PROPOSED: East Renton Lift Station
affected by temporary equipment STREAMFLOW DIVERSION Elimination — remove existing pump station
crossing and pipeline trenching. AND TRENCH BACKFILL and install gravity sewer line
DATUM: NAVD 1988 IN: Section 14, Township 23, Range 5 East
SITE LOCATION ADDRESS: COUNTY: King STATE: WA
In and adjacent to Maplewood Park,
King County and City of Renton, SHEET: 4 of 8
Washington DATE: July 2011
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PURPOSE: Restore stream
TEMPORARY EQUIPMENT
PROPOSED: East Renton Lift Station
affected by temporary equipment
CROSSING - PLAN AND
Elimination — remove existing pump station
crossing and pipeline trenching.
SECTION VIEWS
and install gravity sewer line
DATUM: NAVD 1988
IN: Section 14, Township 23, Range 5 East
SITE LOCATION ADDRESS:
COUNTY: King STATE: WA
In and adjacent to Maplewood Park,
King County and City of Renton,
SHEET: 5 of 8
Washington
DATE: July 2011
KEY NOTES:
OTEMPORARY BYPASS PUMPING MANHOLE. MAX
NOISE OF TEMPORARY BYPASS SYSTEM SHALL BE
45 dBa AT NEAREST RESIDENTIAL PROPERTY LINE.
FIELD VERIFY DIAMETER OF MANHOLE.
OLOCATION AND DATA FOR EXISTING MANHOLE IS
BASED ON CITY OF RENTON GIS DATA AND IS
APPROXIMATE. CONTRACTOR TO FIELD VERIFY.
O CHANNEL WITH CONCRETE. CHANNEL HEIGHT = 12
INCHES.
O4 BYPASS PUMPING DISCHARGE LOCATION. ROUTE
PIPING TO INVERT OF EMERGENCY STORAGE
WELL. TEMPORARILY SUPPORT PIPING AS REQD.
OCONSTRUCTION OF TEMPORARY STREAM
CROSSING IS PROVIDED TO FACILITATE
EQUIPMENT ACCESS ALONG PIPELINE ALIGNMENT.
CONTRACTOR TO INSTALL PER GENERAL DETAILS
SHOWN ON THE DWGS AND PER BEST
MANAGEMENT PRACTICES. SUBMIT TEMPORARY
STREAM CROSSING TO ENGINEER FOR APPROVAL
PRIOR TO INSTALLATION. REMOVE ALL MATERIALS
FOR TEMPORARY STREAM CROSSING PRIOR TO
STREAMBANK RESTORATION.
OCOMPACT CSBC AND CSTC TO 95% MDD PER ASTM
D 1557.
OCOMPACT HMA TO AT LEAST 91% OF ITS MAXIMUM
THEORETICAL SPECIFIC GRAVITY (RICE DENSITY).
OCONTRACTOR TO COORDINATE WITH LOCAL HOA
FOR STORMWATER DETENTION POND ACCESS.
OTEMPORARY BYPASS PIPING. CONTRACTOR TO
ROUTE ABOVE GROUND AND SUPPORT AS
REQUIRED.
10 SEE STREAM DEWATERING PLAN FOR COFFERDAM
DETAILS. ADD VISQUEEN SHEET OR EQUIVALENT
TO FUNNEL STREAM FLOW.
11 VISQUEEN SHEET OR EQUIVALENT AT OUTLET OF
CULVERT.
12 EXTEND CLSM TO 5 FEET OUTSIDE OF STREAM.
13 INSTALL CONCRETE CUT-OFF WALL AT END OF
CLSM.
PURPOSE: Restore stream
affected by temporary equipment
crossing and pipeline trenching.
DATUM: NAVD 1988
KEY NOTES FOR
TEMPORARY CROSSING
SITE LOCATION ADDRESS:
In and adjacent to Maplewood Park,
King County and City of Renton,
Washington
PROPOSED: East Renton Lift Station
Elimination - remove existing pump station
and install gravity sewer line
IN: Section 14, Township 23, Range 5 East
COUNTY: King STATE: WA
SHEET. 6 of 8
DATE: July 2011
INSTALL ROL'"'^cn i Wool c
AND WASH 8
DEPTH OF 12
GRADE
CLSM PER W
SECTION 2-M
2/_Ni[ 41-101111
TRENCH BACKFILL ST
DETAIL (TYP)
BACKFILL ONLY
T CROSSING
`n
See Sheet 5 for pipeline trench location. See Sheet 4 for trench backfill Key Notes.
NTS
PURPOSE: Restore stream
TRENCHED PIPELINE
PROPOSED: East Renton Lift Station
affected by temporary equipment
CROSSING - PLAN AND
Elimination — remove existing pump station
crossing and pipeline trenching.
SECTION VIEWS
and install gravity sewer line
DATUM: NAVD 1988
IN: Section 14, Township 23, Range 5 East
SITE LOCATION ADDRESS:
COUNTY: King STATE: WA
In and adjacent to Maplewood Park,
King County and City of Renton,
SHEET: 7 of 8
Washington
DATE: July 2011
mart
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FOREaTEO BUFFER ENHANGEMEM (5)ea SFl
(RANTING ZONE n
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;Sewnla4: rim•
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Planting Zone 4: Seed Mix
eol,ntr+t wm• ep.�mon ram 1; p.re 5red 'A Germlrl.non
-^t):�,?.:t c1.. •�71a`".:..yaS_�aLaG2:1
t'-�t:.'
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as
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See Appendix A of Stream and Buffer Mitigation Plan for complete planting plan.
PURPOSE: Restore stream
affected by temporary equipment
crossing and pipeline trenching.
DATUM: NAVD 1988
Wq
STREAMBANK
RESTORATION
SITE LOCATION ADDRESS:
In and adjacent to Maplewood Park,
King County and City of Renton,
Washington
PROPOSED: East Renton Lift Station
Elimination — remove existing pump station
and install gravity sewer line
IN: Section 14, Township 23, Range 5 East
COUNTY: King STATE: WA
SHEET: 8 of 8
DATE: July 2011
µes oe
NATIONWIDE PERMIT 12 .�
of Army Corps Terms and Conditions
of Engineers o
Seattle District
Effective Date: June 15, 2012
A. Description of Authorized Activities
B. Corps National General Conditions for all NWPs
C. Corps Seattle District Regional General Conditions
D. Corps Regional Specific Conditions for this NWP
E. State 401 Certification General Conditions
F. State 401 Certification Specific Conditions for this NWP
G. EPA 401 Certification General Conditions
H. EPA 401 Certification Specific Conditions for this NWP
I. Coastal Zone Management Consistency Response for this NWP
In addition to any special condition that may be required on a case -by -case basis by the District Engineer,
the following terms and conditions must be met, as applicable, for a Nationwide Permit authorization to be
valid in Washington State.
A. DESCRIPTION OF AUTHORIZED ACTIVITIES
12. Utility Line Activities. Activities required for the construction, maintenance, repair, and removal of
utility lines and associated facilities in waters of the United States, provided the activity does not result in
the loss of greater than 1/2-acre of waters of the United States for each single and complete project.
Utility lines: This NWP authorizes the construction, maintenance, or repair of utility lines,
including outfall and intake structures, and the associated excavation, backfill, or bedding for the utility
lines, in all waters of the United States, provided there is no change in pre -construction contours. A
"utility line" is defined as any pipe or pipeline for the transportation of any gaseous, liquid, liquescent, or
slurry substance, for any purpose, and any cable, line, or wire for the transmission for any purpose of
electrical energy, telephone, and telegraph messages, and radio and television communication. The term
"utility line" does not include activities that drain a water of the United States, such as drainage tile or
french drains, but it does apply to pipes conveying drainage from another area.
Material resulting from trench excavation may be temporarily sidecast into waters of the United
States for no more than three months, provided the material is not placed in such a manner that it is
dispersed by currents or other forces. The district engineer may extend the period of temporary side
casting for no more than a total of 180 days, where appropriate. In wetlands, the top 6 to 12 inches of the
trench should normally be backfilled with topsoil from the trench. The trench cannot be constructed or
backfilled in such a manner as to drain waters of the United States (e.g., backfilling with extensive gravel
layers, creating a french drain effect). Any exposed slopes and stream banks must be stabilized
immediately upon completion of the utility line crossing of each waterbody.
Utility line substations: This NWP authorizes the construction, maintenance, or expansion of
substation facilities associated with a power line or utility line in non -tidal waters of the United States,
provided the activity, in combination with all other activities included in one single and complete project,
does not result in the loss of greater than 1/2-acre of waters of the United States. This NWP does not
authorize discharges into non -tidal wetlands adjacent to tidal waters of the United States to construct,
maintain, or expand substation facilities.
Foundations for overhead utility line towers, poles, and anchors: This NWP authorizes the
construction or maintenance of foundations for overhead utility line towers, poles, and anchors in all
waters of the United States, provided the foundations are the minimum size necessary and separate
footings for each tower leg (rather than a larger single pad) are used where feasible.
Access roads: This NWP authorizes the construction of access roads for the construction and
maintenance of utility lines, including overhead power lines and utility line substations, in non -tidal
waters of the United States, provided the activity, in combination with all other activities included in one
single and complete project, does not cause the loss of greater than 1/2-acre of non -tidal waters of the
United States. This NWP does not authorize discharges into non -tidal wetlands adjacent to tidal waters for
access roads. Access roads must be the minimum width necessary (see Note 2, below). Access roads must
be constructed so that the length of the road minimizes any adverse effects on waters of the United States
and must be as near as possible to pre -construction contours and elevations (e.g., at grade corduroy roads
or geotextile/gravel roads). Access roads constructed above pre -construction contours and elevations in
waters of the United States must be properly bridged or culverted to maintain surface flows.
This NWP may authorize utility lines in or affecting navigable waters of the United States even if
there is no associated discharge of dredged or fill material (See 33 CFR Part 322). Overhead utility lines
constructed over section 10 waters and utility lines that are routed in or under section 10 waters without a
discharge of dredged or fill material require a section 10 permit.
This NWP also authorizes temporary structures, fills, and work necessary to conduct the utility
line activity. Appropriate measures must be taken to maintain normal downstream flows and minimize
flooding to the maximum extent practicable, when temporary structures, work, and discharges, including
cofferdams, are necessary for construction activities, access fills, or dewatering of construction sites.
Temporary fills must consist of materials, and be placed in a manner, that will not be eroded by expected
high flows. Temporary fills must be removed in their entirety and the affected areas returned to pre -
construction elevations. The areas affected by temporary fills must be revegetated, as appropriate.
Notification: The permittee must submit a pre -construction notification to the district engineer
prior to commencing the activity if any of the following criteria are met: (1) the activity involves
mechanized land clearing in a forested wetland for the utility line right-of-way; (2) a section 10 permit is
required; (3) the utility line in waters of the United States, excluding overhead lines, exceeds 500 feet; (4)
the utility line is placed within a jurisdictional area (i.e., water of the United States), and it runs parallel to
or along a stream bed that is within that jurisdictional area; (5) discharges that result in the loss of greater
than 1/10-acre of waters of the United States; (6) permanent access roads are constructed above grade in
waters of the United States for a distance of more than 500 feet; or (7) permanent access roads are
constructed in waters of the United States with impervious materials. (See general condition 31.)
(Sections 10 and 404)
Note 1: Where the proposed utility line is constructed or installed in navigable waters of the
United States (i.e., section 10 waters) within the coastal United States, the Great Lakes, and United States
territories, copies of the pre -construction notification and NWP verification will be sent by the Corps to
the National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), for
charting the utility line to protect navigation.
Note 2: Access roads used for both construction and maintenance may be authorized, provided
they meet the terms and conditions of this NWP. Access roads used solely for construction of the utility
line must be removed upon completion of the work, in accordance with the requirements for temporary
fills.
Note 3: Pipes or pipelines used to transport gaseous, liquid, liquescent, or slurry substances over
navigable waters of the United States are considered to be bridges, not utility lines, and may require a
permit from the U.S. Coast Guard pursuant to Section 9 of the Rivers and Harbors Act of 1899. However,
any discharges of dredged or fill material into waters of the United States associated with such pipelines
will require a section 404 permit (see NWP 15).
Note 4: For overhead utility lines authorized by this NWP, a copy of the PCN and NWP
verification will be provided to the Department of Defense Siting Clearinghouse, which will evaluate
potential effects on military activities.
B. CORPS NATIONAL GENERAL CONDITIONS FOR ALL NWPs
Note: To qualify for NWP authorization, the prospective permittee must comply with the following
general conditions, as applicable, in addition to any regional or case -specific conditions imposed by the
division engineer or district engineer. Prospective permittees should contact the appropriate Corps district
office to determine if regional conditions have been imposed on an NWP. Prospective permittees should
also contact the appropriate Corps district office to determine the status of Clean Water Act Section 401
water quality certification and/or Coastal Zone Management Act consistency for an NWP. Every person
who may wish to obtain permit authorization under one or more NWPs, or who is currently relying on an
existing or prior permit authorization under one or more NWPs, has been and is on notice that all of the
provisions of 33 CFR § 330.1 through 330.6 apply to every NWP authorization. Note especially 33 CFR
§ 330.5 relating to the modification, suspension, or revocation of any NWP authorization.
1. Navigation. (a) No activity may cause more than a minimal adverse effect on navigation.
(b) Any safety lights and signals prescribed by the U.S. Coast Guard, through regulations or
otherwise, must be installed and maintained at the permittee's expense on authorized facilities in
navigable waters of the United States.
(c) The permittee understands and agrees that, if future operations by the United States require the
removal, relocation, or other alteration, of the structure or work herein authorized, or if, in the opinion of
the Secretary of the Army or his authorized representative, said structure or work shall cause
unreasonable obstruction to the free navigation of the navigable waters, the permittee will be required,
upon due notice from the Corps of Engineers, to remove, relocate, or alter the structural work or
obstructions caused thereby, without expense to the United States. No claim shall be made against the
United States on account of any such removal or alteration.
2. Aquatic Life Movements. No activity may substantially disrupt the necessary life cycle movements of
those species of aquatic life indigenous to the waterbody, including those species that normally migrate
through the area, unless the activity's primary purpose is to impound water. All permanent and temporary
crossings of waterbodies shall be suitably culverted, bridged, or otherwise designed and constructed to
maintain low flows to sustain the movement of those aquatic species.
3. Spawning Areas. Activities in spawning areas during spawning seasons must be avoided to the
maximum extent practicable. Activities that result in the physical destruction (e.g., through excavation,
fill, or downstream smothering by substantial turbidity) of an important spawning area are not authorized.
4. Mi rg atory Bird Breeding Areas. Activities in waters of the United States that serve as breeding areas
for migratory birds must be avoided to the maximum extent practicable.
5. Shellfish Beds. No activity may occur in areas of concentrated shellfish populations, unless the activity
is directly related to a shellfish harvesting activity authorized by NWPs 4 and 48, or is a shellfish seeding
or habitat restoration activity authorized by NWP 27.
6. Suitable Material. No activity may use unsuitable material (e.g., trash, debris, car bodies, asphalt, etc.).
Material used for construction or discharged must be free from toxic pollutants in toxic amounts (see
Section 307 of the Clean Water Act).
7. Water Supply Intakes. No activity may occur in the proximity of a public water supply intake, except
where the activity is for the repair or improvement of public water supply intake structures or adjacent
bank stabilization.
8. Adverse Effects From Impoundments. If the activity creates an impoundment of water, adverse effects
to the aquatic system due to accelerating the passage of water, and/or restricting its flow must be
minimized to the maximum extent practicable.
9. Management of Water Flows. To the maximum extent practicable, the pre -construction course,
condition, capacity, and location of open waters must be maintained for each activity, including stream
channelization and storm water management activities, except as provided below. The activity must be
constructed to withstand expected high flows. The activity must not restrict or impede the passage of
normal or high flows, unless the primary purpose of the activity is to impound water or manage high
flows. The activity may alter the pre -construction course, condition, capacity, and location of open waters
if it benefits the aquatic environment (e.g., stream restoration or relocation activities).
10. Fills Within 100-Year Floodplains. The activity must comply with applicable FEMA-approved state
or local floodplain management requirements.
11. Equipment. Heavy equipment working in wetlands or mudflats must be placed on mats, or other
measures must be taken to minimize soil disturbance.
12. Soil Erosion and Sediment Controls. Appropriate soil erosion and sediment controls must be used and
maintained in effective operating condition during construction, and all exposed soil and other fills, as
well as any work below the ordinary high water mark or high tide line, must be permanently stabilized at
the earliest practicable date. Permittees are encouraged to perform work within waters of the United
States during periods of low -flow or no -flow.
13. Removal of Temporary Fills. Temporary fills must be removed in their entirety and the affected areas
returned to pre -construction elevations. The affected areas must be revegetated, as appropriate.
14. Proper Maintenance. Any authorized structure or fill shall be properly maintained, including
maintenance to ensure public safety and compliance with applicable NWP general conditions, as well as
any activity -specific conditions added by the district engineer to an NWP authorization.
15. Single and Complete Project. The activity must be a single and complete project. The same NWP
cannot be used more than once for the same single and complete project.
16. Wild and Scenic Rivers. No activity may occur in a component of the National Wild and Scenic River
System, or in a river officially designated by Congress as a "study river" for possible inclusion in the
system while the river is in an official study status, unless the appropriate Federal agency with direct
management responsibility for such river, has determined in writing that the proposed activity will not
adversely affect the Wild and Scenic River designation or study status. Information on Wild and Scenic
Rivers may be obtained from the appropriate Federal land management agency responsible for the
designated Wild and Scenic River or study river (e.g., National Park Service, U.S. Forest Service, Bureau
of Land Management, U.S. Fish and Wildlife Service).
17. Tribal Rights. No activity or its operation may impair reserved tribal rights, including, but not limited
to, reserved water rights and treaty fishing and hunting rights.
18. Endangered Species. (a) No activity is authorized under any NWP which is likely to directly or
indirectly jeopardize the continued existence of a threatened or endangered species or a species proposed
for such designation, as identified under the Federal Endangered Species Act (ESA), or which will
directly or indirectly destroy or adversely modify the critical habitat of such species. No activity is
authorized under any NWP which "may affect" a listed species or critical habitat, unless Section 7
consultation addressing the effects of the proposed activity has been completed.
(b) Federal agencies should follow their own procedures for complying with the requirements of the
ESA. Federal permittees must provide the district engineer with the appropriate documentation to
demonstrate compliance with those requirements. The district engineer will review the documentation and
determine whether it is sufficient to address ESA compliance for the NWP activity, or whether additional
ESA consultation is necessary.
(c) Non-federal permittees must submit a pre -construction notification to the district engineer if any
listed species or designated critical habitat might be affected or is in the vicinity of the project, or if the
project is located in designated critical habitat, and shall not begin work on the activity until notified by
the district engineer that the requirements of the ESA have been satisfied and that the activity is
authorized. For activities that might affect Federally -listed endangered or threatened species or designated
critical habitat, the pre -construction notification must include the name(s) of the endangered or threatened
species that might be affected by the proposed work or that utilize the designated critical habitat that
might be affected by the proposed work. The district engineer will determine whether the proposed
activity "may affect" or will have "no effect" to listed species and designated critical habitat and will
notify the non -Federal applicant of the Corps' determination within 45 days of receipt of a complete pre -
construction notification. In cases where the non -Federal applicant has identified listed species or critical
habitat that might be affected or is in the vicinity of the project, and has so notified the Corps, the
applicant shall not begin work until the Corps has provided notification the proposed activities will have
"no effect" on listed species or critical habitat, or until Section 7 consultation has been completed. If the
non -Federal applicant has not heard back from the Corps within 45 days, the applicant must still wait for
notification from the Corps.
(d) As a result of formal or informal consultation with the FWS or NMFS the district engineer may
add species -specific regional endangered species conditions to the NWPs.
(e) Authorization of an activity by a NWP does not authorize the "take" of a threatened or endangered
species as defined under the ESA. In the absence of separate authorization (e.g., an ESA Section 10
Permit, a Biological Opinion with "incidental take" provisions, etc.) from the U.S. FWS or the NMFS,
The Endangered Species Act prohibits any person subject to the jurisdiction of the United States to take a
listed species, where "take" means to harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, or
collect, or to attempt to engage in any such conduct. The word "harm" in the definition of "take" means
an act which actually kills or injures wildlife. Such an act may include significant habitat modification or
degradation where it actually kills or injures wildlife by significantly impairing essential behavioral
patterns, including breeding, feeding or sheltering.
(f) Information on the location of threatened and endangered species and their critical habitat can be
obtained directly from the offices of the U.S. FWS and NMFS or their world wide web pages at
http://www.fws.gov/ or http://www.fws.gov/ipac and http://www.noaa.gov/fisheries.html respectively.
19. Migratory Birds and Bald and Golden Eagles. The permittee is responsible for obtaining any "take"
permits required under the U.S. Fish and Wildlife Service's regulations governing compliance with the
Migratory Bird Treaty Act or the Bald and Golden Eagle Protection Act. The permittee should contact the
appropriate local office of the U.S. Fish and Wildlife Service to determine if such "take" permits are
required for a particular activity.
20. Historic Properties. (a) In cases where the district engineer determines that the activity may affect
properties listed, or eligible for listing, in the National Register of Historic Places, the activity is not
authorized, until the requirements of Section 106 of the National Historic Preservation Act (NHPA) have
been satisfied.
(b) Federal permittees should follow their own procedures for complying with the requirements of
Section 106 of the National Historic Preservation Act. Federal permittees must provide the district
engineer with the appropriate documentation to demonstrate compliance with those requirements. The
district engineer will review the documentation and determine whether it is sufficient to address section
106 compliance for the NWP activity, or whether additional section 106 consultation is necessary.
(c) Non-federal permittees must submit a pre -construction notification to the district engineer if the
authorized activity may have the potential to cause effects to any historic properties listed on, determined
to be eligible for listing on, or potentially eligible for listing on the National Register of Historic Places,
including previously unidentified properties. For such activities, the pre -construction notification must
state which historic properties may be affected by the proposed work or include a vicinity map indicating
the location of the historic properties or the potential for the presence of historic properties. Assistance
regarding information on the location of or potential for the presence of historic resources can be sought
from the State Historic Preservation Officer or Tribal Historic Preservation Officer, as appropriate, and
the National Register of Historic Places (see 33 CFR 330.4(g)). When reviewing pre -construction
notifications, district engineers will comply with the current procedures for addressing the requirements
of Section 106 of the National Historic Preservation Act. The district engineer shall make a reasonable
and good faith effort to carry out appropriate identification efforts, which may include background
research, consultation, oral history interviews, sample field investigation, and field survey. Based on the
information submitted and these efforts, the district engineer shall determine whether the proposed
activity has the potential to cause an effect on the historic properties. Where the non -Federal applicant has
identified historic properties on which the activity may have the potential to cause effects and so notified
the Corps, the non -Federal applicant shall not begin the activity until notified by the district engineer
either that the activity has no potential to cause effects or that consultation under Section 106 of the
NHPA has been completed.
(d) The district engineer will notify the prospective permittee within 45 days of receipt of a complete
pre -construction notification whether NHPA Section 106 consultation is required. Section 106
consultation is not required when the Corps determines that the activity does not have the potential to
cause effects on historic properties (see 36 CFR §800.3(a)). If NHPA section 106 consultation is required
and will occur, the district engineer will notify the non -Federal applicant that he or she cannot begin work
until Section 106 consultation is completed. If the non -Federal applicant has not heard back from the
Corps within 45 days, the applicant must still wait for notification from the Corps.
(e) Prospective permittees should be aware that section l l Ok of the NHPA (16 U.S.C. 470h-2(k))
prevents the Corps from granting a permit or other assistance to an applicant who, with intent to avoid the
requirements of Section 106 of the NHPA, has intentionally significantly adversely affected a historic
property to which the permit would relate, or having legal power to prevent it, allowed such significant
adverse effect to occur, unless the Corps, after consultation with the Advisory Council on Historic
Preservation (ACHP), determines that circumstances justify granting such assistance despite the adverse
effect created or permitted by the applicant. If circumstances justify granting the assistance, the Corps is
required to notify the ACHP and provide documentation specifying the circumstances, the degree of
damage to the integrity of any historic properties affected, and proposed mitigation. This documentation
must include any views obtained from the applicant, SHPO/THPO, appropriate Indian tribes if the
undertaking occurs on or affects historic properties on tribal lands or affects properties of interest to those
tribes, and other parties known to have a legitimate interest in the impacts to the permitted activity on
historic properties.
21. Discovery of Previously Unknown Remains and Artifacts. If you discover any previously unknown
historic, cultural or archeological remains and artifacts while accomplishing the activity authorized by this
permit, you must immediately notify the district engineer of what you have found, and to the maximum
extent practicable, avoid construction activities that may affect the remains and artifacts until the required
coordination has been completed. The district engineer will initiate the Federal, Tribal and state
coordination required to determine if the items or remains warrant a recovery effort or if the site is
eligible for listing in the National Register of Historic Places.
22. Designated Critical Resource Waters. Critical resource waters include, NOAA-managed marine
sanctuaries and marine monuments, and National Estuarine Research Reserves. The district engineer may
designate, after notice and opportunity for public comment, additional waters officially designated by a
state as having particular environmental or ecological significance, such as outstanding national resource
waters or state natural heritage sites. The district engineer may also designate additional critical resource
waters after notice and opportunity for public comment.
(a) Discharges of dredged or fill material into waters of the United States are not authorized by NWPs
7, 12, 14, 16, 17, 21, 29, 31, 35, 39, 40, 42, 43, 44, 49, 50, 51, and 52 for any activity within, or directly
affecting, critical resource waters, including wetlands adjacent to such waters.
(b) For NWPs 3, 8, 10, 13, 15, 18, 19, 22, 23, 25, 27, 28, 30, 33, 34, 36, 37, and 38, notification is
required in accordance with general condition 31, for any activity proposed in the designated critical
resource waters including wetlands adjacent to those waters. The district engineer may authorize activities
under these NWPs only after it is determined that the impacts to the critical resource waters will be no
more than minimal.
23. Mitigation. The district engineer will consider the following factors when determining appropriate and
practicable mitigation necessary to ensure that adverse effects on the aquatic environment are minimal:
(a) The activity must be designed and constructed to avoid and minimize adverse effects, both
temporary and permanent, to waters of the United States to the maximum extent practicable at the project
site (i.e., on site).
(b) Mitigation in all its forms (avoiding, minimizing, rectifying, reducing, or compensating for
resource losses) will be required to the extent necessary to ensure that the adverse effects to the aquatic
environment are minimal.
(c) Compensatory mitigation at a minimum one -for -one ratio will be required for all wetland losses
that exceed 1/10-acre and require pre -construction notification, unless the district engineer determines in
writing that either some other form of mitigation would be more environmentally appropriate or the
adverse effects of the proposed activity are minimal, and provides a project -specific waiver of this
requirement. For wetland losses of 1/10-acre or less that require pre -construction notification, the district
engineer may determine on a case -by -case basis that compensatory mitigation is required to ensure that
the activity results in minimal adverse effects on the aquatic environment. Compensatory mitigation
projects provided to offset losses of aquatic resources must comply with the applicable provisions of 33
CFR part 332. (1) The prospective permittee is responsible for proposing an appropriate compensatory
mitigation option if compensatory mitigation is necessary to ensure that the activity results in minimal
adverse effects on the aquatic environment. (2) Since the likelihood of success is greater and the impacts
to potentially valuable uplands are reduced, wetland restoration should be the first compensatory
mitigation option considered. (3) If permittee-responsible mitigation is the proposed option, the
prospective permittee is responsible for submitting a mitigation plan. A conceptual or detailed mitigation
plan may be used by the district engineer to make the decision on the NW verification request, but a
final mitigation plan that addresses the applicable requirements of 33 CFR 332.4(c)(2) - (14) must be
approved by the district engineer before the permittee begins work in waters of the United States, unless
the district engineer determines that prior approval of the final mitigation plan is not practicable or not
necessary to ensure timely completion of the required compensatory mitigation (see 33 CFR 332.3(k)(3)).
(4) If mitigation bank or in -lieu fee program credits are the proposed option, the mitigation plan only
needs to address the baseline conditions at the impact site and the number of credits to be provided.
(5) Compensatory mitigation requirements (e.g., resource type and amount to be provided as
compensatory mitigation, site protection, ecological performance standards, monitoring requirements)
may be addressed through conditions added to the NWP authorization, instead of components of a
compensatory mitigation plan.
(d) For losses of streams or other open waters that require pre -construction notification, the district
engineer may require compensatory mitigation, such as stream rehabilitation, enhancement, or
preservation, to ensure that the activity results in minimal adverse effects on the aquatic environment.
(e) Compensatory mitigation will not be used to increase the acreage losses allowed by the acreage
limits of the NWPs. For example, if an NWP has an acreage limit of 1/2-acre, it cannot be.used to
authorize any project_ resulting in the loss of greater than 1/2-acre of waters of the United States, even if
compensatory mitigation is provided that replaces or restores some of the lost waters. However,
compensatory mitigation can and should be used, as necessary, to ensure that a project already meeting
the established acreage limits also satisfies the minimal impact requirement associated with the NWPs.
(f) Compensatory mitigation plans for projects in or near streams or other open waters will normally
include a requirement for the restoration or establishment, maintenance, and legal protection (e.g.,
conservation easements) of riparian areas next to open waters. In some cases, riparian areas may be the
only compensatory mitigation required. Riparian areas should consist of native species. The width of the
required riparian area will address documented water quality or aquatic habitat loss concerns. Normally,
the riparian area will be 25 to 50 feet wide on each side of the stream, but the district engineer may
require slightly wider riparian areas to address documented water quality or habitat loss concerns. If it is
not possible to establish a riparian area on both sides of a stream, or if the waterbody is a lake or coastal
waters, then restoring or establishing a riparian area along a single bank or shoreline may be sufficient.
Where both wetlands and open waters exist on the project site, the district engineer will determine the
appropriate compensatory mitigation (e.g., riparian areas and/or wetlands compensation) based on what is
best for the aquatic environment on a watershed basis. In cases where riparian areas are determined to be
the most appropriate form of compensatory mitigation, the district engineer may waive or reduce the
requirement to provide wetland compensatory mitigation for wetland losses.
(g) Permittees may propose the use of mitigation banks, in -lieu fee programs, or separate permittee-
responsible mitigation. For activities resulting in the loss of marine or estuarine resources, permittee-
responsible compensatory mitigation may be environmentally preferable if there are no mitigation banks
or in -lieu fee programs in the area that have marine or estuarine credits available for sale or transfer to the
permittee. For permittee-responsible mitigation, the special conditions of the NWP verification must
clearly indicate the party or parties responsible for the implementation and performance of the
compensatory mitigation project, and, if required, its long-term management.
(h) Where certain functions and services of waters of the United States are permanently adversely
affected, such as the conversion of a forested or scrub -shrub wetland to a herbaceous wetland in a
permanently maintained utility line right-of-way, mitigation may be required to reduce the adverse effects
of the project to the minimal level.
24. Safety of Impoundment Structures. To ensure that all impoundment structures are safely designed,
the district engineer may require non -Federal applicants to demonstrate that the structures comply with
established state dam safety criteria or have been designed by qualified persons. The district engineer may
also require documentation that the design has been independently reviewed by similarly qualified
persons, and appropriate modifications made to ensure safety.
25. Water Quality. Where States and authorized Tribes, or EPA where applicable, have not previously
certified compliance of an NWP with CWA Section 401, individual 401 Water Quality Certification must
be obtained or waived (see 33 CFR 330.4(c)). The district engineer or State or Tribe may require
additional water quality management measures to ensure that the authorized activity does not result in
more than minimal degradation of water quality.
26. Coastal Zone Management. In coastal states where an NWP has not previously received a state coastal
zone management consistency concurrence, an individual state coastal zone management consistency
concurrence must be obtained, or a presumption of concurrence must occur (see 33 CFR 330.4(d)). The
district engineer or a State may require additional measures to ensure that the authorized activity is
consistent with state coastal zone management requirements.
27. Regional and Case -By -Case Conditions. The activity must comply with any regional conditions that
may have been added by the Division Engineer (see 33 CFR 330.4(e)) and with any case specific
conditions added by the Corps or by the state, Indian Tribe, or U.S. EPA in its section 401 Water Quality
Certification, or by the state in its Coastal Zone Management Act consistency determination.
28. Use of Multiple Nationwide Permits. The use of more than one NWP for a single and complete
project is prohibited, except when the acreage loss of waters of the United States authorized by the NWPs
does not exceed the acreage limit of the NWP with the highest specified acreage limit. For example, if a
road crossing over tidal waters is constructed under NWP 14, with associated bank stabilization
authorized by NWP 13, the maximum acreage loss of waters of the United States for the total project
cannot exceed 1/3-acre.
29. Transfer of Nationwide Permit Verifications. If the permittee sells the property associated with a
nationwide permit verification, the permittee may transfer the nationwide permit verification to the new
owner by submitting a letter to the appropriate Corps district office to validate the transfer. A copy of the
nationwide permit verification must be attached to the letter, and the letter must contain the following
statement and signature:
"When the structures or work authorized by this nationwide permit are still in existence at the time the
property is transferred, the terms and conditions of this nationwide permit, including any special
conditions, will continue to be binding on the new owner(s) of the property. To validate the transfer of
this nationwide permit and the associated liabilities associated with compliance with its terms and
conditions, have the transferee sign and date below."
(Transferee)
(Date)
30. Compliance Certification. Each permittee who receives an NWP verification letter from the Corps
must provide a signed certification documenting completion of the authorized activity and any required
compensatory mitigation. The success of any required permittee-responsible mitigation, including the
achievement of ecological performance standards, will be addressed separately by the district engineer.
The Corps will provide the permittee the certification document with the NWP verification letter. The
certification document will include: (a) A statement that the authorized work was done in accordance with
the NWP authorization, including any general, regional, or activity -specific conditions; (b) A statement
that the implementation of any required compensatory mitigation was completed in accordance with the
permit conditions. If credits from a mitigation bank or in -lieu fee program are used to satisfy the
compensatory mitigation requirements, the certification must include the documentation required by 33
CFR 332.3(1)(3) to confirm that the permittee secured the appropriate number and resource type of
credits; and (c) The signature of the permittee certifying the completion of the work and mitigation.
31. Pre -Construction Notification. (a) Timin . Where required by the terms of the NWP, the prospective
permittee must notify the district engineer by submitting a pre -construction notification (PCN) as early as
possible. The district engineer must determine if the PCN is complete within 30 calendar days of the date
of receipt and, if the PCN is determined to be incomplete, notify the prospective permittee within that 30
day period to request the additional information necessary to make the PCN complete. The request must
specify the information needed to make the PCN complete. As a general rule, district engineers will
request additional information necessary to make the PCN complete only once. However, if the
prospective permittee does not provide all of the requested information, then the district engineer will
notify the prospective permittee that the PCN is still incomplete and the PCN review process will not
commence until all of the requested information has been received by the district engineer. The
prospective permittee shall not begin the activity until either: (1) He or she is notified in writing by the
district engineer that the activity may proceed under the NWP with any special conditions imposed by the
district or division engineer; or (2) 45 calendar days have passed from the district engineer's receipt of the
complete PCN and the prospective permittee has not received written notice from the district or division
engineer. However, if the permittee was required to notify the Corps pursuant to general condition 18 that
listed species or critical habitat might be affected or in the vicinity of the project, or to notify the Corps
pursuant to general condition 20 that the activity may have the potential to cause effects to historic
properties, the permittee cannot begin the activity until receiving written notification from the Corps that
there is "no effect" on listed species or "no potential to cause effects" on historic properties, or that any
consultation required under Section 7 of the Endangered Species Act (see 33 CFR 330.4(f)) and/or
Section 106 of the National Historic Preservation (see 33 CFR 330.4(g)) has been completed. Also, work
cannot begin under NWPs 21, 49, or 50 until the permittee has received written approval from the Corps.
If the proposed activity requires a written waiver to exceed specified limits of an NWP, the permittee
may not begin the activity until the district engineer issues the waiver. If the district or division engineer
notifies the permittee in writing that an individual permit is required within 45 calendar days of receipt of
a complete PCN, the permittee cannot begin the activity until an individual permit has been obtained.
Subsequently, the permittee's right to proceed under the NWP may be modified, suspended, or revoked
only in accordance with the procedure set forth in 33 CFR 330.5(d)(2).
(b) Contents of Pre -Construction Notification: The PCN must be in writing and include the following
information: (1) Name, address and telephone numbers of the prospective permittee; (2) Location of the
proposed project; (3) A description of the proposed project; the project's purpose; direct and indirect
adverse environmental effects the project would cause, including the anticipated amount of loss of water
of the United States expected to result from the NWP activity, in acres, linear feet, or other appropriate
unit of measure; any other NWP(s), regional general permit(s), or individual permit(s) used or intended to
be used to authorize any part of the proposed project or any related activity. The description should be
sufficiently detailed to allow the district engineer to determine that the adverse effects of the project will
be minimal and to determine the need for compensatory mitigation. Sketches should be provided when
necessary to show that the activity complies with the terms of the NWP. (Sketches usually clarify the
project and when provided results in a quicker decision. Sketches should contain sufficient detail to
provide an illustrative description of the proposed activity (e.g., a conceptual plan), but do not need to be
detailed engineering plans); (4) The PCN must include a delineation of wetlands, other special aquatic
sites, and other waters, such as lakes and ponds, and perennial, intermittent, and ephemeral streams, on
the project site. Wetland delineations must be prepared in accordance with the current method required by
the Corps. The permittee may ask the Corps to delineate the special aquatic sites and other waters on the
project site, but there may be a delay if the Corps does the delineation, especially if the project site is
large or contains many waters of the United States. Furthermore, the 45 day period will not start until the
delineation has been submitted to or completed by the Corps, as appropriate; (5) If the proposed activity
will result in the loss of greater than 1/10-acre of wetlands and a PCN is required, the prospective
permittee must submit a statement describing how the mitigation requirement will be satisfied, or
explaining why the adverse effects are minimal and why compensatory mitigation should not be required.
As an alternative, the prospective permittee may submit a conceptual or detailed mitigation plan. (6) If
any listed species or designated critical habitat might be affected or is in the vicinity of the project, or if
the project is located in designated critical habitat, for non -Federal applicants the PCN must include the
name(s) of those endangered or threatened species that might be affected by the proposed work or utilize
the designated critical habitat that may be affected by the proposed work. Federal applicants must provide
documentation demonstrating compliance with the Endangered Species Act; and (7) For an activity that
may affect a historic property listed on, determined to be eligible for listing on, or potentially eligible for
listing on, the National Register of Historic Places, for non -Federal applicants the PCN must state which
historic property may be affected by the proposed work or include a vicinity map indicating the location
of the historic property. Federal applicants must provide documentation demonstrating compliance with
Section 106 of the National Historic Preservation Act.
10
(c) Form of Pre -Construction Notification: The standard individual permit application form (Form
ENG 4345) may be used, but the completed application form must clearly indicate that it is a PCN and
must include all of the information required in paragraphs (b)(1) through (7) of this general condition. A
letter containing the required information may also be used.
(d) Agency Coordination: (1) The district engineer will consider any comments from Federal and
state agencies concerning the proposed activity's compliance with the terms and conditions of the NWPs
and the need for mitigation to reduce the project's adverse environmental effects to a minimal level. (2)
For all NWP activities that require pre -construction notification and result in the loss of greater than 1/2-
acre of waters of the United States, for NWP 21, 29, 39, 40, 42, 43, 44, 50, 51, and 52 activities that
require pre -construction notification and will result in the loss of greater than 300 linear feet of
intermittent and ephemeral stream bed, and for all NWP 48 activities that require pre -construction
notification, the district engineer will immediately provide (e.g., via e-mail, facsimile transmission,
overnight mail, or other expeditious manner) a copy of the complete PCN to the appropriate Federal or
state offices (U.S. FWS, state natural resource or water quality agency, EPA, State Historic Preservation
Officer (SHPO) or Tribal Historic Preservation Office (THPO), and, if appropriate, the NMFS). With the
exception of NWP 37, these agencies will have 10 calendar days from the date the material is transmitted
to telephone or fax the district engineer notice that they intend to provide substantive, site -specific
comments. The comments must explain why the agency believes the adverse effects will be more than
minimal. If so contacted by an agency, the district engineer will wait an additional 15 calendar days
before making a decision on the pre -construction notification. The district engineer will fully consider
agency comments received within the specified time frame concerning the proposed activity's compliance
with the terms and conditions of the NWPs, including the need for mitigation to ensure the net adverse
environmental effects to the aquatic environment of the proposed activity are minimal. The district
engineer will provide no response to the resource agency, except as provided below. The district engineer
will indicate in the administrative record associated with each pre -construction notification that the
resource agencies' concerns were considered. For NWP 37, the emergency watershed protection and
rehabilitation activity may proceed immediately in cases where there is an unacceptable hazard to life or a
significant loss of property or economic hardship will occur. The district engineer will consider any
comments received to decide whether the NWP 37 authorization should be modified, suspended, or
revoked in accordance with the procedures at 33 CFR 330.5. (3) In cases of where the prospective
permittee is not a Federal agency, the district engineer will provide a response to NMFS within 30
calendar days of receipt of any Essential Fish Habitat conservation recommendations, as required by
Section 305(b)(4)(B) of the Magnuson -Stevens Fishery Conservation and Management Act. (4)
Applicants are encouraged to provide the Corps with either electronic files or multiple copies of pre -
construction notifications to expedite agency coordination.
District Engineer's Decision
1. In reviewing the PCN for the proposed activity, the district engineer will determine whether the
activity authorized by the NWP will result in more than minimal individual or cumulative adverse
environmental effects or may be contrary to the public interest. For a linear project, this determination
will include an evaluation of the individual crossings to determine whether they individually satisfy the
terms and conditions of the NWP(s), as well as the cumulative effects caused by all of the crossings
authorized by NWP. If an applicant requests a waiver of the 306 linear foot limit on impacts to
intermittent or ephemeral streams or of an otherwise applicable limit, as provided for in NWPs 13, 21, 29,
36, 39, 40, 42, 43, 44, 50, 51 or 52, the district engineer will only grant the waiver upon a written
determination that the NWP activity will result in minimal adverse effects. When making minimal effects
determinations the district engineer will consider the direct and indirect effects caused by the NWP
activity. The district engineer will also consider site specific factors, such as the environmental setting in
the vicinity of the NWP activity, the type of resource that will be affected by the NWP activity, the
functions provided by the aquatic resources that will be affected by the NWP activity, the degree or
magnitude to which the aquatic resources perform those functions, the extent that aquatic resource
functions will be lost as a result of the NWP activity (e.g., partial or complete loss), the duration of the
adverse effects (temporary or permanent), the importance of the aquatic resource functions to the region
(e.g., watershed or ecoregion), and mitigation required by the district engineer. If an appropriate
functional, assessment method is available and practicable to use, that assessment method may be used by
the district engineer to assist in the minimal adverse effects determination. The district engineer may add
case -specific special conditions to the NWP authorization to address site -specific environmental concerns.
2. If the proposed activity requires a PCN and will result in a loss of greater than 1/10-acre of
wetlands, the prospective permittee should submit a mitigation proposal with the PCN. Applicants may
also propose compensatory mitigation for projects with smaller impacts. The district engineer will
consider any proposed compensatory mitigation the applicant has included in the proposal in determining
whether the net adverse environmental effects to the aquatic environment of the proposed activity are
minimal. The compensatory mitigation proposal may be either conceptual or detailed. If the district
engineer determines that the activity complies with the terms and conditions of the NWP and that the
adverse effects on the aquatic environment are minimal, after considering mitigation, the district engineer
will notify the permittee and include any activity -specific conditions in the NWP verification the district
engineer deems necessary. Conditions for compensatory mitigation requirements must comply with the
appropriate provisions at 33 CFR 332.3(k). The district engineer must approve the final mitigation plan
before the permittee commences work in waters of the United States, unless the district engineer
determines that prior approval of the final mitigation plan is not practicable or not necessary to ensure
timely completion of the required compensatory mitigation. If the prospective pennittee elects to submit a
compensatory mitigation plan with the PCN, the district engineer will expeditiously review the proposed
compensatory mitigation plan. The district engineer must review the proposed compensatory mitigation
plan within 45 calendar days of receiving a complete PCN and determine whether the proposed mitigation
would ensure no more than minimal adverse effects on the aquatic environment. If the net adverse effects
of the project on the aquatic environment (after consideration of the compensatory mitigation proposal)
are determined by the district engineer to be minimal, the district engineer will provide a timely written
response to the applicant. The response will state that the project can proceed under the terms and
conditions of the NWP, including any activity -specific conditions added to the NWP authorization by the
district engineer.
3. If the district engineer determines that the adverse effects of the proposed work are more than
minimal, then the district engineer will notify the applicant either: (a) That the project does not qualify for
authorization under the NWP and instruct the applicant on the procedures to seek authorization under an
individual permit; (b) that the project is authorized under the NWP subject to the applicant's submission
of a mitigation plan that would reduce the adverse effects on the aquatic environment to the minimal
level; or (c) that the project is authorized under the NWP with specific modifications or conditions.
Where the district engineer determines that mitigation is required to ensure no more than minimal adverse
effects occur to the aquatic environment, the activity will be authorized within the 45-day PCN period,
with activity -specific conditions that state the mitigation requirements. The authorization will include the
necessary conceptual or detailed mitigation or a requirement that the applicant submit a mitigation plan
that would reduce the adverse effects on the aquatic environment to the minimal level. When mitigation is
required, no work in waters of the United States may occur until the district engineer has approved a
specific mitigation plan or has determined that prior approval of a final mitigation plan is not practicable
or not necessary to ensure timely completion of the required compensatory mitigation.
Further Information
1. District Engineers have authority to determine if an activity complies with the terms and conditions of
an NWP.
2. NWPs do not obviate the need to obtain other federal, state, or local permits, approvals, or
authorizations required by law.
12
3. NWPs do not grant any property rights or exclusive privileges.
4. NWPs do not authorize any injury to the property or rights of others.
5. NWPs do not authorize interference with any existing or proposed Federal project.
C. CORPS SEATTLE DISTRICT REGIONAL GENERAL CONDITIONS
1. Aquatic Resources Requiring Special Protection. Activities resulting in a loss of waters of the United
States in a mature forested wetland, bog, bog -like wetland, aspen -dominated wetland, alkali wetland,
wetlands in a dunal system along the Washington coast, vernal pools, camas prairie wetlands, estuarine
wetlands, and wetlands in coastal lagoons cannot be authorized by a NWP, except by the following
NWPs:
NWP 3 — Maintenance
NWP 20 — Oil Spill Cleanup
NWP 32 — Completed Enforcement Actions
NWP 38 — Cleanup of Hazardous and Toxic Waste
In order to use one of the above -referenced NWPs in any of the aquatic resources requiring special
protection, you must submit a pre -construction notification to the District Engineer in accordance with
Nationwide Permit General Condition 31 (Pre -Construction Notification) and obtain written approval
before commencing work.
2. Commencement Bay. The following NWPs may not be used to authorize activities located in the
Commencement Bay Study Area (see Figure 1 at www.nws.usace.army.mil, select Regulatory Permits
then Permit Guidebook, then Nationwide Permits) requiring Department of the Army authorization:
NWP 12 — Utility Line Activities (substations)
NWP 13 — Bank Stabilization
NWP 14 — Linear Transportation Projects
NWP 23 — Approved Categorical Exclusions
NWP 29 — Residential Developments
NWP 39 — Commercial and Institutional Developments
NWP 40 — Agricultural Activities
NWP 41 — Reshaping Existing Drainage Ditches
NWP 42 — Recreational Facilities
NWP 43 — Stormwater Management Facilities
3. New Bank Stabilization Prohibition Areas in Tidal Waters of Puget Sound. Activities involving new
bank stabilization in tidal waters in Water Resource Inventory Areas (WRIAs) 8, 9, 10, 11, and 12 (within
the specific area identified on Figure 2 at www.nws.usace.army.mil, select Regulatory Permits then
Permit Guidebook, then Nationwide Permits) cannot be authorized by a NWP.
4. Bank Stabilization. Any project including new or maintenance bank stabilization activities requires
pre -construction notification to the District Engineer in accordance with Nationwide Permit General
Condition 31 for Pre -Construction Notification. This requirement does not apply to maintenance work
exempt by 33 CFR 323.4 (a)(2). Each notification must also include the following information:
a. Need for the work, including the cause of the erosion and the threat posed to structures,
infrastructure, and/or public safety. The notification must also include a justification for the need to place
fill or structures waterward of the line of the Corps' jurisdiction (typically, the ordinary high water mark
or mean higher high water mark).
13
b. Current and expected post -project sediment movement and deposition patterns in and near the
project area. In tidal waters, describe the location and size of the nearest bluff sediment sources (feeder
bluffs) to the project area and current and expected post -project nearshore drift patterns in the project
area.
c. Current and expected post -project habitat conditions, including the presence of fish, wildlife and
plant species, submerged aquatic vegetation, spawning habitat, and special aquatic sites (e.g., vegetated
shallows, riffle and pool complexes, or mudflats) in the project area.
d. In rivers and streams, an assessment of the likely impact of the proposed work on upstream,
downstream and cross -stream properties (at a minimum the area assessed should extend from the nearest
upstream bend to the nearest downstream bend of the watercourse). Discuss the methodology used for
determining effects. The Corps reserves the right to request an increase in the reach assessment area to
fully address the relevant ecological reach and associated habitat.
e. For new bank stabilization activities in rivers and streams, describe the type and length of existing
bank stabilization within 300 feet up and downstream of the project area. In tidal areas, describe the type
and length of existing bank stabilization within 300 feet along the shoreline on both sides of the project
area.
f. Demonstrate the proposed project incorporates the least environmentally damaging practicable
bank protection methods. These methods include, but are not limited to, the use of bioengineering,
biotechnical design, root wads, large woody material, native plantings, and beach nourishment in certain
circumstances. If rock must be used due to site erosion conditions, explain how the bank stabilization
structure incorporates elements beneficial to fish. If the Corps determines you have not incorporated the
least environmentally damaging practicable bank protection methods and/or have not fully compensated
for impacts to aquatic resources, you must submit a compensatory mitigation plan to compensate for
impacts to aquatic resources.
g. A planting plan using native riparian plant species unless the applicant demonstrates a planting
plan is not appropriate or not practicable.
5. Crossings of Waters of the United States. Any project including installing, replacing, or modifying
crossings of waters of the United States, such as culverts, requires pre -construction notification to the
District Engineer in accordance with Nationwide Permit General Condition 31 for Pre -Construction
Notification. This requirement does not apply to maintenance work exempt by 33 CFR 323.4 (a)(2).
Each notification must also include the following information:
a. Need for the crossing.
b. Crossing design criteria and design methodology.
c. Rationale behind using the specific design method for the crossing.
6. Cultural Resources and Human Burials. Permittees must immediately stop work and notify the
District Engineer within 24 hours if, during the course of conducting authorized work, human burials,
cultural resources, or historic properties, as identified by the National Historic Preservation Act, are
discovered. Failure to stop work in the area of discovery until the Corps can comply with the provisions
of 33 CFR 325 Appendix C, the National Historic Preservation Act, and other pertinent laws and
14
regulations could result in a violation of state and federal laws. Violators are subject to civil and criminal
penalties.
7. Essential Fish Habitat. An activity which may adversely affect essential fish habitat, as identified
under the Magnuson -Stevens Fishery Conservation and Management Act (MSA), may not be authorized
by NWP until essential fish habitat requirements have been met by the applicant and the Corps. Non-
federal permittees shall notify the District Engineer if essential fish habitat may be affected by, or is in the
vicinity of, a proposed activity and shall not begin work until notified by the District Engineer that the
requirements of the essential fish habitat provisions of the MSA have been satisfied and the activity is
authorized. The notification must identify the type(s) of essential fish habitat (e.g., Pacific'salmon,
groundfish, and/or coastal -pelagic species) managed by a Fishery Management Plan that may be affected.
Information about essential fish habitat is available at www.nwr.noaa.gov/.
8. Vegetation Protection and Restoration. Permittees must clearly mark all construction area boundaries
before beginning work. The removal of native vegetation in riparian areas and wetlands, and the removal
of submerged aquatic vegetation in estuarine and tidal areas must be avoided and minimized to the
maximum extent practicable. Areas subject to temporary vegetation removal shall be replanted with
appropriate native species by the end of the first planting season following the disturbance except as
waived by the District Engineer. If an aquaculture area is permitted to impact submerged aquatic
vegetation under NWP 48, the aquaculture area does not need to be replanted with submerged aquatic
vegetation.
9. Access. You must allow representatives of this office to inspect the authorized activity at any time
deemed necessary to ensure the work is being, or has been, accomplished in accordance with the terms
and conditions of your permit.
10. Contractor Notification of Permit Requirements. The permittee must provide a copy of the
nationwide permit verification letter, conditions, and permit drawings to all contractors involved with the
authorized work, prior to the commencement of any work in waters of the U.S.
D. CORPS REGIONAL SPECIFIC CONDITIONS FOR THIS NWP
1. When backfilling trenches in wetlands, no more than 10 percent of the soil used to backfill the top 12
inches of the trench may consist of subsurface soil.
2. The permittee must submit a pre -construction notification to the District Engineer in accordance with
Nationwide Permit General Condition 31 (Pre -Construction Notification) for mechanized landclearing in
a forested wetland for the construction of a substation.
3. A pre -construction notification must include drawings and/or a description of the measures that will be
used to prevent permanent drainage of adjacent areas by the backfilled trench and/or along the buried
utility line.
E. STATE 401 CERTIFICATION GENERAL CONDITIONS:
1. For in -water construction activities. Individual 401 review is required for projects or activities
authorized under NWPs that will cause, or be likely to cause or contribute to an exceedence of a State
water quality standard (WAC 173-201A) or sediment management standard (WAC 173-204).
Note: State water quality standards are posted on Ecology's website:
http://www.ecy.wa.gov/programslwglswgsl Click "Surface Water Criteria "forfreshwaterand
15
marine water standards. Sediment management standards are posted on Ecology's website:
htip://www.ecy.wa.gov/biblio/wac173204.html. Information is also available by contacting
Ecology's Federal Permit staff.
2. Projects or Activities Discharging to Impaired Waters. Individual 401 review is required for
projects or activities authorized under NWPs if the project or activity will occur in a 303(d) listed
segment of a waterbody or upstream of a listed segment and may result in further exceedences of the
specific listed parameter.
Note: To determine if your projector activity is in a 303(d) listed segment of a waterbody, visit
Ecology's Water Quality Assessment webpage for maps and search tools,
http://www.ecy.wa.gov/programs/wq/303d/2008/. Information is also available by contacting
Ecology's Federal Permit staff.
3. Notification. For projects or activities that will require Individual 401 review, applicants must
provide Ecology with the same documentation provided to the Corps (as described in Corps
Nationwide Permit General Condition 31, Pre -Construction Notification), including, when applicable:
(a) A description of the project, including site plans, project purpose, direct and indirect adverse
environmental effects the project would cause, and any other Department of the Army permits
used or intended to be used to authorize any part of the proposed project or any related activity.
(b) Delineation of special aquatic sites and other waters of the United States. Wetland delineations
must be prepared in accordance with the current method required by the Corps and shall include
Ecology's Wetland Rating form. Wetland rating forms are subject to review and verification by
Ecology staff.
Note: Wetland rating forms are available on Ecology's Wetlands website:
http://www.ecy.wa.gov/programslsealwetlandslratingsystems or by contacting Ecology's Federal
Permit staff.
(c) A statement describing how the mitigation requirement will be satisfied. A conceptual or detailed
mitigation or restoration plan may be submitted.
Mitigation plans submitted for Ecology review and approval shall be based on the guidance
provided in Wetland Mitigation in Washington State, Parts 1 and 2 (Ecology Publications #06-06-
011 a and #06-06-011 b).
(d) Coastal Zone Management Program "Certification of Consistency" Form if the project is located
within a coastal county (Clallam, Grays Harbor, Island, Jefferson, King, Kitsap, Mason, Pacific,
Pierce, San Juan, Skagit, Snohomish, Thurston, Wahkiakum, and Whatcom counties).
Note: CZM Certification of Consistency forms are available on Ecology's Federal Permit
website: http://www. ecy.wa.gov/programs/sea/fed permit/index.html or by contacting Ecology's
Federal Permit staff.
(e) Other applicable requirements of Corps Nationwide Permit General Condition 31, Corps
Regional Conditions, or notification conditions of the applicable NWP.
Note: Ecology has 180 days from receipt of applicable documents noted above and a copy of the
final authorization letter from the Corps providing coverage for a proposed project or activity
16
under the NWP Program to issue a WQC and CZM consistency determination response. If more
than 180 days pass after Ecology's receipt of these documents, your requirement to obtain an
individual WQC and CZM consistency determination response becomes waived.
4. Aquatic resources requiring special protection. Certain aquatic resources are unique, difficult -to -
replace components of the aquatic environment in Washington State. Activities that would affect
these resources must be avoided to the greatest extent possible. Compensating for adverse impacts to
high value aquatic resources is typically difficult, prohibitively expensive, and may not be possible in
some landscape settings.
Individual 401 review is required for activities in or affecting the following aquatic resources (and not
prohibited by Regional Condition 1):
(a) Wetlands with special characteristics (as defined in the Washington State Wetland Rating Systems
for western and eastern Washington, Ecology Publications #04-06-025 and #04-06-015):
• Estuarine wetlands
• Natural Heritage wetlands
• Bogs
• Old -growth and mature forested wetlands
• Wetlands in coastal lagoons
• Interdunal wetlands
• Vernal pools
• Alkali wetlands
(b) Fens, aspen -dominated wetlands, camas prairie wetlands, and marine water with eelgrass (Zostera
marina) beds (except for NWP 48).
(c) Category 1 wetlands
(d) Category II wetlands with a habitat score > 29 points. This State General Condition does not
apply to the following Nationwide Permits:
NWP 20 — Response Operations for Oil and Hazardous Substances
NWP 32 — Completed Enforcement Actions
5. Mitigation. For projects requiring Individual 401 review, adequate compensatory mitigation must
be provided for wetland and other water quality -related impacts of projects or activities authorized
under the NWP Program.
(a) Mitigation plans submitted for Ecology review and approval shall be based on the guidance
provided in Wetland Mitigation in Washington State, Parts 1 and 2 (Ecology Publications #06-06-
011 a and #06-06-011 b) and shall, at a minimum, include the following:
i. A description of the measures taken to avoid and minimize impacts to wetlands and other
waters of the U.S.
ii. The nature of the proposed impacts (i.e., acreage of wetlands and functions lost or degraded)
iii. The rationale for the mitigation site that was selected
17
iv. The goals and objectives of the compensatory mitigation project
v. How the mitigation project will be accomplished, including construction sequencing, best
management practices to protect water quality, proposed performance standards for measuring
success and the proposed buffer widths
vi. How it will be maintained and monitored to assess progress towards goals and objectives.
Monitoring will generally be required for a minimum of five years. For forested and scrub -
shrub wetlands, 10 years of monitoring will often be necessary.
vii. How the compensatory mitigation site will be legally protected for the long term.
Refer to Wetland Mitigation in Washington State — Part 2: Developing Mitigation Plans (Ecology
Publication 406-06-01 lb) for guidance on developing mitigation plans.
Ecology encourages the use of alternative mitigation approaches, including advance mitigation and other
programmatic approaches such as mitigation banks and programmatic mitigation areas at the local level.
If you are interested in proposing use of an alternative mitigation approach, consult with the appropriate
Ecology regional staff person. (see http://www.ecy.wa.gov/programs/sea/wetlands/contacts.htm)
Information on the state wetland mitigation banking program is available on Ecology's website:
http://www.ecy.wa. gov/programs/sea/wetlands/mitigation/banking/i ndex. htm 1
6. Temporary Fills. Individual 401 review is required for any project or activity with temporary fill in
wetlands or other waters of the State for more than 90 days, unless the applicant has received written
approval from Ecology.
Note: This State General Condition does not apply to projects or activities authorized under NWP 33,
Temporary Construction, Access, and Dewatering
7. Stormwater discharge pollution prevention: All projects that involve land disturbance or
impervious surfaces must implement prevention or control measures to avoid discharge of pollutants
in stormwater runoff to waters of the state. For land disturbances during construction, the permittee
must obtain and implement permits where required and follow Ecology's current stormwater manual.
Note: Stormwater permit information is available at Ecology's Water Quality website:
http://www.ecy.wa.gov/programs/wq/stormwater/index.html. Ecology's Stormwater Management and
Design Manuals are available at:
http://www.ecy.wa.gov/programslwqlstormwater/municipallStrmwtrMan.htmL Information is also
available by contacting Ecology's Federal Permit staff.
8. State Certification for PCNs not receiving 45-day response. In the event the U.S. Army Corps of
Engineers does not respond to a complete pre -construction notification within 45 days, the applicant
must contact Ecology for Individual 401 review.
F. STATE 401 CERTIFICATION SPECIFIC CONDITIONS FOR THIS NWT: Certified subject to
conditions. Permittee must meet Ecology 401 General Conditions. Individual 401 review required for
projects or activities authorized under this NWP if:
1. The entire utility line project or activity impacts more than'/2 acre of wetlands.
18
Note: Projects or activities that need a FERC license will be required to obtain an Individual 401
Certification as part of the FERC license process.
G. EPA 401 CERTIFICATION GENERAL CONDITIONS:
A. Any activities in the following types of wetlands and waters of the United States will need to apply
for an individual 401 certification: Mature forested wetlands, bogs, bog -like wetlands, wetlands in dunal
systems along the Washington coast, coastal lagoons, vernal pools, aspen -dominated wetlands, alkali
wetlands, camas prairie wetlands, estuarine wetlands, including salt marshes, and marine waters with
eelgrass or kelp beds.
B. A 401 certification determination is based on the project or activity meeting established turbidity
levels. The EPA will be using as guidance the state of Washington's water quality standards [WAC 173-
201 a] and sediment quality standards [WAC 173-204]. Projects or activities that are expected to exceed
these levels or that do exceed these levels will require an individual 401 certification.
The water quality standards allow for short-term turbidity exceedances after all necessary Best
Management Practices have been implemented (e.g., properly placed and maintained filter fences, hay
bales and/or other erosion control devices, adequate detention of runoff to prevent turbid water from
flowing off -site, providing a vegetated buffer between the activity and open water, etc.), and only up to
the following limits:
Wetted Stream Width at Discharge Point
Approximate Downstream Point for
Determining Compliance
Up to 30 feet
50 feet
>30 to 100 feet
100 feet
> 100 feet to 200 feet
200 feet
>200 feet
300 feet
LAKE, POND, RESERVOIR
Lesser of 100 feet or maximum, surface
dimension
C. 401 certification of projects and activities under NWPs will use Washington State Department of
Ecology's most recent stormwater manual or an EPA approved equivalent manual as guidance in meeting
water quality standards.
D. For projects and activities requiring coverage under an NPDES permit, certification is based on
compliance with the requirements of that permit. Projects and activities not in compliance with NPDES
requirements will require individual 40 1 certification.
E. Individual 401 certification is required for projects or activities authorized under NWPs if the
project will discharge to a waterbody on the list of impaired waterbodies (the 303(d) List) and the
discharge may result in further exceedance of a specific parameter the waterbody is listed for. The EPA
shall make this determination on a case -by -case basis.
For projects or activities that will discharge to a 303(d)-listed waterbody that does not have an
approved Total Maximum Daily Load (TMDL) or an approved water quality management plan, the
applicant must provide documentation for EPA approval showing that the discharge will not result in
further exceedance of the listed contaminant or impairment.
19
For projects or activities that will discharge to a 303(d)-listed waterbody that does not have an
approved TMDL, the applicant must provide documentation for EPA approval showing that the discharge
is within the limits established in the TMDL. The current list of 303(d)-listed waterbodies in Washington
State will be consulted in making this determination and is available on Ecology's web site at:
www.ecy.wa.gov/programs/wq/303d/2012/index.htmi
The EPA may issue 401 certification for projects or activities that would result in further exceedance
or impairment if mitigation is provided that would result in a net decrease in listed contaminants or less
impairment in the waterbody. This determination would be made during individual 401 certification
review.
F. For projects requiring individual 401 certification, applicants must provide the EPA with the same
documentation provided to the Corps, (as described in Corps' National General Condition 31, Pre -
Construction Notification), including, when applicable:
(a) A description of the project, including site plans, project purpose, direct and indirect adverse
environmental effects the project would cause, any other U.S. Department of the Army
permits used or intended to use to authorize any part of the proposed project or any related
activity.
(b) Delineation of special aquatic sites and other waters of the United States. Wetland
delineations must be prepared in accordance with the current method required by the Corps.
(c) A statement describing how the mitigation requirement will be satisfied. A conceptual or
detailed mitigation or restoration plan may be submitted.
(d) Other applicable requirements of Corps National General Condition 31, Corps Regional
Conditions, or notification conditions of the applicable NWP.
A request for individual 401 certification- review is not complete until the EPA receives the
applicable documents noted above and the EPA has received a copy of the final authorization letter from
the Corps providing coverage for a proposed project or activity under the NWP Program.
G. No activity, including structures and work in navigable waters of the United States or discharges
of dredged or fill material, may consist of unsuitable material (e.g., trash, debris, car bodies, asphalt, etc.)
and material used for construction or discharged must be free from toxic pollutants in toxic amounts (see
Section 307 of the Clean Water Act).
H. An individual 401 certification is based on adequate compensatory mitigation being provided for
aquatic resource and other water quality -related impacts of projects or activities authorized under the
NWP Program.
A 401 certification is contingent upon written approval from the EPA of the compensatory
mitigation plan for projects and activities resulting in any of the following:
• impacts to any aquatic resources requiring special protection (as defined in EPA General
Condition A or Corps General Regional Condition 1)
• any impacts to tidal waters or non -tidal waters adjacent to tidal waters (applies to NWP 14)
• Or, any impacts to aquatic resources greater than '/4 acre.
20
Compensatory mitigation plans submitted to the EPA shall be based on the Joint Agency guidance
provided in Wetland Mitigation in Washington State, Parts 1 and 2 (Ecology Publication #06-06-01 la
and #06-06-011 b) and shall, at a minimum, include the following:
(1) A description of the measures taken to avoid and minimize impacts to wetlands and other
waters of the U.S.
(2) The nature of the proposed impacts (i.e., acreage of wetlands and functions lost or degraded)
(3) The rationale for the mitigation site that was selected
(4) The goals and objectives of the compensatory mitigation project
(5) How the mitigation project will be accomplished, including proposed performance standards
for measuring success (including meeting planting success standard of 80 percent survival
after five years), evidence for hydrology at the mitigation site, and the proposed buffer
widths;
(6) How it will be maintained and monitored to assess progress towards goals and objectives.
(7) Completion and submittal of an "as -built conditions report" upon completion of grading,
planting and hydrology establishment at the mitigation site;
(8) Completion and submittal of monitoring reports at years 3 and 5 showing the results of
monitoring for hydrology, vegetation types, and aerial cover of vegetation.
(9) For forested and scrub -shrub wetlands, 10 years of monitoring will often be necessary.
(10) Documentation of legal site protection mechanism (covenant or deed restriction) to show
how the compensatory mitigation site will be legally protected for the long-term.
I. An individual 401 certification is required for any activity where temporary fill will remain in
wetlands or other waterbodies for more than 90 days. The 90 day period begins when filling activity starts
in the wetland or other waterbody.
J. An individual 401 is required for any proposed project or activity in waterbodies on the most
current list of the following Designated Critical Resource Waters (per Corps General Condition 22).
K. An individual 401 certification is required for any proposed project that would increase permanent,
above -grade fill within the 100-year floodplain (including the floodway and the flood fringe).
[Note: The 100-year floodplain is defined as those areas identified as Zones A, Al-30, AE, AH,
AO, A99, V, V 1-30, and VE on the most current Federal Emergency Management Agency Flood
Rate Insurance Maps, or areas identified as within the 100-year floodplain on applicable local
Flood Management Program maps. The 100-year flood is also known as the flood with a 100-year
recurrence interval, or as the flood with an exceedance probability of 0.01.]
H. EPA 401 CERTIFICATION SPECIFIC CONDITIONS FOR THIS NWP: Partially denied without
prejudice. Permittee must meet EPA 401 General Conditions. Individual 401 certification required for
projects authorized under this NWP if:
1. Any excavation or dredging activities affecting open water areas (e.g., trenching across
streams), or
2. There are any permanent access roads, temporary structures or fill associated with the utility
line activities, or
3. The entire scope of the project involves greater than 1/10 acre of impacts to aquatic
resources.
21
L COASTAL ZONE MANAGEMENT CONSISTENCY RESPONSE FOR THIS NWP: Concur, subject
to the following condition: When individual 401 review is triggered, a CZM Certificate of Consistency
form must be submitted for project located within the 15 coastal counties (See State General 401
Condition 3 (Notification)).
22
COS
PRELIMINARY JURISDICTIONAL DETERMINATION FORM
BACKGROUND INFORMATION
A. REPORT COMPLETION DATE FOR PRELIMINARY JURISDICTIONAL DETERMINATION (JD):
B. NAME AND ADDRESS OF PERSON REQUESTING PRELIMINARY JD:
Dave Christensen. City of Renton Public Works
C. DISTRICT OFFICE, FILE NAME, AND NUMBER: Seattle District, NWS4U-96G7- a0 d —9 T
D. PROJECT LOCATION(S) AND BACKGROUND INFORMATION:
State: WA County: King City: Renton
Center coordinates of site (latflong in degree decimal format): Lat. 47.48096°N, Long.-122.14273°W
Name of nearest waterbody:
Name of any water bodies on the site, in the review area, that have been identified as Section 10 waters:
Tidal:
Non -Tidal:
Identify (estimate) amount of waters in the review area (if there are multiple sites, use the table instead):
Non -wetland waters (total for site): linear feet 700 and width (ft)10 or acres.
Stream Flow: RPW Flow path: SE
Wetlands: acres (total for site).
Cowardin Class(es):
Site
number
Latitude
Longitude
Cowardin
Class
Estimated amount of aquatic
resource in review area
Class of aquatic resource
REVIEW PERFORMED FOR SITE EVALUATION (CHECK ALL THAT APPLY):
® Office (Desk) Determination. Date:12/19/2011
❑ Field Determination. Date(s):
SUPPORTING DATA. Data reviewed for preliminary JD (check all that apply - checked items should be included in case file and, where checked and
requested, appropriately reference sources below):
® Maps, plans, plots or plat submitted by or on behalf of the applicant/consultant: dated July 2011.
❑ Data sheets prepared/submitted by or on behalf of the applicant/consultant.
❑ Office concurs with data sheets/delineation report.
❑ Office does not concur with data sheets/delineation report. Explain:
❑ Data sheets prepared by the Corps:
❑ Corps navigable waters' study:
❑ U.S. Geological Survey Hydrologic Atlas:
❑ USGS NHD data. ❑ USGS 8 and 12 digit HUC maps.
❑ U.S. Geological Survey map(s). Cite scale & quad name:
❑ USDA Natural Resources Conservation Service Soil Survey. Citation:
❑ National wetlands inventory map(s). Cite name:
❑ State/Local wetland inventory map(s):
❑ FEMA/FIRM maps:
❑ 100-year Floodplain Elevation is: (National Geodetic Vertical Datum of 1929)
❑ Photographs: ❑ Aerial (Name & Date):
❑ Photographs: ❑ Other (Name & Date):
❑ Previous determination(s). File no., date (and findings) of response letter (determination and coordination):
❑ Other information (please specify):
1. The Corps of Engineers believes that there may be jurisdictional waters of the United States on the subject site, and the permit applicant or other affected
party who requested this preliminary JD is hereby advised of his or her option to request and obtain an approved jurisdictional determination (JD) for that site.
Nevertheless, the permit applicant or other person who requested this preliminary JD has declined to exercise the option to obtain an approved JD in this
instance and at this time.
2. In any circumstance where a permit applicant obtains an individual permit, or a Nationwide General Permit (NWP) or other general permit verification
requiring 'pre -construction notification' (PCN), or requests verification for a non -reporting NWP or other"general permit, and the -permit applicant has not
requested an approved JD for the activity, the permit applicant is hereby made aware of the following: (1) the permit applicant has elected to seek a permit
authorization based on a preliminary JD, which does not make an official determination of jurisdictional waters; (2) that the applicant has the option to request
an approved JD before accepting the terms and conditions of the permit authorization, and that basing a permit authorization on an approved JD could
possibly result in less compensatory mitigation being required or different special conditions; (3) that the applicant has the right to request an individual
permit rather than accepting the terms and conditions of the NWP or other general permit authorization; (4) that the applicant can accept a permit
authorization and thereby agree to comply with all the terms and conditions of that permit, including whatever mitigation requirements the Corps has
determined to be necessary; (5) that undertaking any activity in reliance upon the subject permit authorization without requesting an approved JD constitutes
the applicant's acceptance of the use of the preliminary JD, but that either form of JD will be processed as soon as is practicable; (6) accepting a permit
authorization (e.g., signing a proffered individual permit) or undertaking any activity in reliance on any form of Corps permit authorization based on a
preliminary JD constitutes agreement that all wetlands and other water bodies on the site affected in any way by that activity are jurisdictional waters of the
United States, and precludes any challenge to such jurisdiction in any administrative or judicial compliance or enforcement action, or in any administrative
appeal or in any Federal court; and (7) whether the applicant elects to use either an approved JD or a preliminary JD, that JD will be processed as soon as
is practicable. Further, an approved JD, a proffered individual permit (and all terms and conditions contained therein), or individual permit denial can be
administratively appealed pursuant to 33 C.F.R. Part 331, and that in any administrative appeal, jurisdictional issues can be raised (see 33 C.F.R.
331.5(a)(2)). If, during that administrative appeal, it becomes necessary to make an official determination whether CWA jurisdiction exists over a site, or to
provide an official delineation of jurisdictional waters on the site, the Corps will provide an approved JD to accomplish that result, as soon as is practicable.
This preliminary JD finds that there 'may be"waters of the United States on the subject project site, and identifies all aquatic features on the site that could
be affected by the proposed activity, based on the information in this document.
IMPORTANT NOTE: The information recorded on this form has not necessarily been verified by the Corps and should not be relied upon for later
lunsdictional determinations.
Signat re:
e ulatory Projec anager Date
Person' Requesting Preliminary JD Date
I Permit applicant, landowner, a lease, easement or option holder, or individual with identifiable and substantial legal interest in the property; this signature is not required for
preliminary JDs associated with enforcement actions.
CERTIFICATE OF COMPLIANCE
US Army corps WITH DEPARTMENT OF THE ARMY PERMIT
of Engineers
Seattle District
Permit Number: NWS-2011-967
Name of Permittee: City of Renton Public Works
Date of Issuance: JAN 0 9 2013
Upon completion of the activity authorized by this permit, please check the applicable boxes below, date
and sign this certification, and return it to the following address:
Department of the Army
U.S. Army Corps of Engineers
Seattle District, Regulatory Branch
Post Office Box 3755
Seattle, Washington 98124-3755
Please note that your permitted activity is subject to a compliance inspection by a U.S. Army Corps of
Engineers representative. If you fail to comply with the terms and conditions of your authorization, your
permit may be subject to suspension, modification, or revocation.
The work authorized by the above -referenced permit has been completed in accordance with the
❑ terms and conditions of this permit.
Date work complete:
❑ Photographs and as -built drawings of the authorized work (OPTIONAL, unless required
as a Special Condition of the permit).
If applicable, the mitigation required (e.g., construction and plantings) in the above -referenced
❑ permit has been completed in accordance with the terms and conditions of this permit (not
including future monitoring).
Date work complete:
❑ Photographs and as -built drawings of the mitigation (OPTIONAL, unless required as a
Special Condition of the permit).
Printed Name:
Signature:
Date:
wpr Of
z �
.0 `P
��AitS t�� � • •
Regulatory Branch
Dave Christensen
City of Renton Public Works
1055 South Grady Way
Renton, Washington 98057
Dear Mr. Christensen:
DEPARTMENT OF THE ARMY
SEATTLE DISTRICT, CORPS OF ENGINEERS
P.O. BOX 3755
SEATTLE, WASHINGTON 98124-3755
LIAR 15 2012
Reference:
RECEIVED
MAR 19 2012
CITY OF RENTON
UTILITY SYSTEM
NWS-2011-967
Renton Public Works
We have reviewed your application to place 30 cubic yards of fill in Stewart Creek for
sewer line construction at Renton, Washington. Based on the information you provided to us,
Nationwide Permit (NWP) 12, Utility Line Activities (Federal Register, March 12, 2007, Vol.
72, No. 47), authorizes your proposal as depicted on the enclosed drawings dated July 2008. In
order for this NWP authorization to be valid, you must ensure the work is performed in
accordance with the enclosed Nationwide Permit 12, Terms and Conditions and the following
special condition:
a. You must implement and abide by the Endangered Species Act (ESA) requirements
and/or agreements set forth in the Letter of No Effect, dated August, in their entirety. The U.S.
Army Corps of Engineers (Corps) made a determination of No Effect for all species based on
this document. Failure to comply with the commitments made in this document constitutes non-
compliance with the ESA and your Corps permit. As stated in your application, you may
conduct the authorized activities from June 1 through September 30 in any year this permit is
valid. You shall not conduct work authorized by this permit from October 1 through July 1 in
any year this permit is valid.
Please note that Seattle District Nationwide Permit Regional General Condition 5, Cultural
Resources and Human Burials, found in the Nationwide Permit Terms and Conditions enclosure,
details procedures should an inadvertent discovery occur. You must ensure that you comply
with this condition during the construction of your project.
The authorized work complies with the Washington State Department of Ecology's
(Ecology) Water Quality Certification and the Coastal Zone Management Act requirements for
this NWP. No further coordination with Ecology is required.
-2-
We have reviewed your project pursuant to the requirements of the ESA and the Magnuson -
Stevens Fishery Conservation and Management Act in regards to Essential Fish Habitat (EFH).
We have determined that this project complies with the requirements of the NWP National
General Condition regarding ESA and will not adversely affect EFH.
We have prepared and enclosed a Preliminary Jurisdictional Determination (JD), which is a
written indication that wetlands and waterways within your project area may be waters of the
United States. Such waters will be treated as jurisdictional waters of the U.S. for purposes of
computation of impact area and compensatory mitigation requirements associated with your
permit application. If you believe the Preliminary JD is inaccurate, you may request an
Approved JD, which is an official determination regarding the presence or absence of waters of
the U.S. If one is requested, please be aware that we may require the submittal of additional
information to complete an approved JD and work authorized in this letter may not occur until
the approved JD has been finalized.
This verification is valid until the NWP is modified, reissued, or revoked. All of the
existing NWPs are scheduled to be modified, reissued, or revoked on March 18, 2012. It is
incumbent upon you to remain informed of changes to the NWPs. We will issue a public notice
when the NWPs are reissued. Furthermore, if you commence or are under contract to commence
this activity before March 18, 2012, you will have until March 18, 2013, to complete the activity
under the present terms and conditions of this NWP.
Upon completing the authorized work, you must fill out and return the enclosed Certificate
of Compliance with Department of the Army Permit form. Thank you for your cooperation
during the permit process. We are interested in your experience with our Regulatory Program
and encourage you to complete a customer service survey form. This form and information
about our program is available on our website at http://www.nws.usace.army.mil/ select
Regulatory, Regulatory / Permits. A copy of this letter without enclosures will be furnished to
Ms. Sara Noland, ESA, at 5309 Shilshole Avenue Northwest, Suite 200, Seattle, Washington
98107. If you have any questions, please contact me at lori.c.lull@usace.army.mil or by phone
(206) 766-6438.
Sincerely,
Lori C. Lull, Project Manager
Regulatory Branch
Enclosures
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PURPOSE: Restore stream
affected by temporary equipment
crossing and pipeline trenching.
DATUM: NAVD 1988
..-. —
SITE PLAN
SITE LOCATION ADDRESS:
In and adjacent to Maplewood Park,
King County and City of Renton,
Washington
PROPOSED: East Renton Lift Station
Elimination — remove existing pump station
and install gravity sewer line
IN: Section 14, Township 23, Range 5 East
COUNTY: King STATE: WA
SHEET: 2 of 8
DATE: July 2011
SACKS SHALL BE #10 JUTE BURLAP
OR APPROVED ALTERNATE FILLED
WITH 48 TO 55 LBS. OF PEA GRAVEL
BACKFILL FOR DRAINS.
INSTALL APPROXIMATELY 3FEET
ABOVE CHANNEL INVERT. ALIGN
LOW POINT IN DAM WITH CENTER
OF CHANNEL.
/ ADD VISOUEEN - - ,
THROUGH FILLED
BURLAP SACK STACK
FLOWLINE
PLACE SACKS FIRMLY
AGAINST GROUND LINE
AND ADJACENT SACKS.
PLAN SECTION A
SCALE: NTS
FILE: 8235C10-C-08
10
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A STREAM DEWATERING PLAN
c oz FILE: B235COD-C-100 See y
SCALE: = SSheet 4 for Key Notes.
D-C-
See Appendix A of Stream and Buffer Mitigation Plan for enlarged drawings.
PURPOSE: Restore stream WORK AREA ISOLATION & PROPOSED: East Renton Lift Station
affected by temporary equipment STREAMFLOW DIVERSION Elimination — remove existing pump station
crossing and pipeline trenching. and install gravity sewer line
DATUM: NAVD 1988 SITE LOCATION ADDRESS: IN: Section 14, Township 23, Range 5 East
In and adjacent to Maplewood Park, COUNTY: King STATE: WA
King County and City of Renton,
Washington SHEET: 3 of 8
DATE: July 2011
KEY NOTES:
OTHE FILTER FABRIC SHALL BE PURCHASED IN A CONTINUOUS ROLL CUT TO THE LENGTH OF THE BARRIER TO AVOID USE OF
JOINTS. WHEN JOINTS ARE NECESSARY, FILTER CLOTH SHALL BE SPLICED TOGETHER ONLY AT A SUPPORT POST, WITH A
MINIMUM 6-INCH OVERLAP, AND BOTH ENDS SECURELY FASTENED TO THE POST.
OTHE FILTER FABRIC FENCE SHALL BE INSTALLED TO FOLLOW THE CONTOURS (WHERE FEASIBLE). THE FENCE POSTS SHALL
BE SPACED A MAXIMUM OF 6 FEET APART AND DRIVEN SECURELY INTO THE GROUND (MINIMUM OF 30 INCHES).
OA TRENCH SHALL BE EXCAVATED, ROUGHLY 8 INCHES WIDE AND 12 INCHES DEEP, UPSLOPE AND ADJACENT TO THE WOOD
POST TO ALLOW THE FILTER FABRIC TO BE BURIED.
OWHEN STANDARD STRENGTH FILTER FABRIC IS USED, A WIRE MESH SUPPORT FENCE SHALL BE FASTENED SECURELY TO
THE UPSLOPE SIDE OF THE POSTS USING HEAVY-DUTY WIRE STAPLES AT LEAST 1 INCH LONG, TIE WIRES OR HOG RINGS.
THE WIRE SHALL EXTEND INTO THE TRENCH A MINIMUM OF 4 INCHES AND SHALL NOT EXTEND MORE THAN 36 INCHES
ABOVE THE ORIGINAL GROUND SURFACE.
OTHE STANDARD STRENGTH FILTER FABRIC SHALL BE STAPLED OR WIRED THE FENCE, AND 20 INCHES OF THE FABRIC SHALL
BE EXTENDED INTO THE TRENCH. THE FABRIC SHALL NOT EXTEND MORE THAN 36 INCHES ABOVE THE ORIGINAL GROUND
SURFACE. FILTER FABRIC SHALL NOT BE STAPLED TO EXISTING TREES.
OWHEN EXTRA -STRENGTH FILTER FABRIC AND CLOSER POST SPACING ARE USED, THE WIRE MESH SUPPORT FENCE MAY BE
ELIMINATED. IN SUCH A CASE, THE FILTER FABRIC IS STAPLED OR WIRED DIRECTLY TO THE POSTS.
OTHE TRENCH SHALL BE BACKFILLED WITH 3/4-INCH MINIMUM DIAMETER WASHED GRAVEL.
OINSTALL UPSTREAM SCREENED DIVERSION PUMP. PUMP SHALL, AT A MINIMUM, BE A 6 INCH GAS POWERED TRASH PUMP,
SUFFICIENT TO HANDLE EXPECTED STREAM FLOWS OF 0.5 TO 3 CUBIC FEET PER SECOND INCLUDING FLEXIBLE PIPE
SYSTEM.
OSELECT DISCHARGE POINT DOWNSTREAM OF IMPACTED AREA TO AVOID EROSION. LINE DISCHARGE AREA WITH VISQUEEN
OR EQUIVALENT TO DISSIPATE FLOW ENERGY AND PREVENT CHANNEL SCOUR.
1p INSTALL UPSTREAM COFFERDAM WITH LOW POINT ALIGNED WITH CENTER OF ACTIVE CHANNEL. COORD LOCATION WITH
TEMPORARY STREAM CROSSING.
11 INSTALL DOWNSTREAM COFFERDAM BELOW IMPACTED AREA.
12 COMPLETE ALL IN WATER WORK, GRADE SITE AND INSTALL COIR LOGS OR COIR BLANKET WHILE CHANNEL IS DE -WATERED.
WORK SHALL BE COMPLETED AFTER INSTALLATION OF PIPELINE AND DURING REMOVAL OF TEMPORARY STREAM
CROSSING.
13 WHERE DEWATERING PIPE CROSSES EQUIPMENT CROSSING OR INTERFERES WITH CONSTRUCTION, BURY PIPE IN A
TRENCH AND COVER WITH STEEL PLATES.
14 USE HIGH VISIBILITY FENCING TO DELINEATE IN -STREAM LIMIT OF WORK.
15 PIPE BEDDING AND BACKFILL PER CITY STD PLAN 405, NATIVE BACKFILL WHERE INDICATED.
PURPOSE: Restore stream KEY NOTES FOR PROPOSED: East Renton Lift Station
affected by temporary equipment STREAMFLOW DIVERSION Elimination — remove existing pump station
crossing and pipeline trenching. AND TRENCH BACKFILL and install gravity sewer line
DATUM: NAVD 1988 IN: Section 14, Township 23, Range 5 East
SITE LOCATION ADDRESS: COUNTY: King STATE: WA
In and adjacent to Maplewood Park,
King County and City of Renton, SHEET: 4 of 8
Washington DATE: July 2011
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CULVERT
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m TI 5
Mitigation Plan for enlarged drawings SCALE: 1112- '.0"
FILE: 8235CI0-C-08
KEY NOTES:
OTEMPORARY BYPASS PUMPING MANHOLE. MAX
NOISE OF TEMPORARY BYPASS SYSTEM SHALL BE
45 dBa AT NEAREST RESIDENTIAL PROPERTY LINE.
FIELD VERIFY DIAMETER OF MANHOLE.
OLOCATION AND DATA FOR EXISTING MANHOLE IS
BASED ON CITY OF RENTON GIS DATA AND IS
APPROXIMATE. CONTRACTOR TO FIELD VERIFY.
O CHANNEL WITH CONCRETE. CHANNEL HEIGHT = 12
INCHES.
O4 BYPASS PUMPING DISCHARGE LOCATION. ROUTE
PIPING TO INVERT OF EMERGENCY STORAGE
WELL. TEMPORARILY SUPPORT PIPING AS REQD.
OCONSTRUCTION OF TEMPORARY STREAM
CROSSING IS PROVIDED TO FACILITATE
EQUIPMENT ACCESS ALONG PIPELINE ALIGNMENT.
CONTRACTOR TO INSTALL PER GENERAL DETAILS
SHOWN ON THE DWGS AND PER BEST
MANAGEMENT PRACTICES. SUBMIT TEMPORARY
STREAM CROSSING TO ENGINEER FOR APPROVAL
PRIOR TO INSTALLATION. REMOVE ALL MATERIALS
FOR TEMPORARY STREAM CROSSING PRIOR TO
STREAMBANK RESTORATION.
OCOMPACT CSBC AND CSTC TO 95% MDD PER ASTM
D 1557.
OCOMPACT HMA TO AT LEAST 91% OF ITS MAXIMUM
THEORETICAL SPECIFIC GRAVITY (RICE DENSITY).
OCONTRACTOR TO COORDINATE WITH LOCAL HOA
FOR STORMWATER DETENTION POND ACCESS.
OTEMPORARY BYPASS PIPING. CONTRACTOR TO
ROUTE ABOVE GROUND AND SUPPORT AS
REQUIRED.
10 SEE STREAM DEWATERING PLAN FOR COFFERDAM
DETAILS. ADD VISQUEEN SHEET OR EQUIVALENT
TO FUNNEL STREAM FLOW.
11 VISQUEEN SHEET OR EQUIVALENT AT OUTLET OF
CULVERT.
12 EXTEND CLSM TO 5 FEET OUTSIDE OF STREAM.
1g INSTALL CONCRETE CUT-OFF WALL AT END OF
CLSM.
PURPOSE: Restore stream
affected by temporary equipment
crossing and pipeline trenching.
DATUM: NAVD 1988
Milo
KEY NOTES FOR
TEMPORARY CROSSING
SITE LOCATION ADDRESS:
In and adjacent to Maplewood Park,
King County and City of Renton,
Washington
PROPOSED: East Renton Lift Station
Elimination — remove existing pump station
and install gravity sewer line
IN: Section 14, Township 23, Range 5 East
COUNTY: King STATE: WA
SHEET. 6 of 8
DATE: July 2011
INSTALL ROUNDED COBBLE
AND WASH SAND MIX TO
DEPTH OF 1T MATCH EX
GRADE
CLSM PER WSDOT
SECTION 2-09.3(1)E
NATIVE SOIL
TRENCH BAC
DETAIL (TYP)
�00--v00 �/
O � � 15 BACKFILL ONLY
0000000 \\�\�
M AT CROSSING
See Sheet 5 for pipeline trench location. See Sheet 4 for trench backfill Key Notes.
PURPOSE: Restore stream
affected by temporary equipment
crossing and pipeline trenching.
DATUM: NAVD 1988
TRENCHED PIPELINE
CROSSING — PLAN AND
SECTION VIEWS
SITE LOCATION ADDRESS:
In and adjacent to Maplewood Park,
King County and City of Renton,
Washington
NTS
PROPOSED: East Renton Lift Station
Elimination — remove existing pump station
and install gravity sewer line
IN: Section 14, Township 23, Range 5 East
COUNTY: King STATE: WA
SHEET: 7 of 8
DATE: July 2011
Plantin lone 1: Forested Buffer Enhanoemnt
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See Appendix A of Stream and Buffer Mitigation Plan for complete planting plan.
PURPOSE: Restore stream
affected by temporary equipment
crossing and pipeline trenching.
DATUM: NAVD 1988
w-
STREAMBANK
RESTORATION
SITE LOCATION ADDRESS:
In and adjacent to Maplewood Park,
King County and City of Renton,
Washington
PROPOSED: East Renton Lift Station
Elimination — remove existing pump station
and install gravity sewer line
IN: Section 14, Township 23, Range 5 East
COUNTY: King STATE: WA
SHEET: 8 of 8
DATE: July 2011
NATIONWIDE PERMIT 1.2
US Army Corps
of Engineers a Terms and Conditions
Seattle District
Effective Date: September 10, 2007
A. Description of Authorized Activities
B. Corps National General Conditions for all NWPs
C. Corps Seattle District Regional General Conditions
D. Corps Regional Specific Conditions for this NWP
E. State 401 Certification General Conditions
F. State 401 Certification Specific Conditions for this NWP
G. EPA 401 Certification General Conditions
H. EPA 401 Certification Specific Conditions for this NWP
I. Spokane Tribe of Indians 401 Certification General Conditions
J. Tribal 401 Certification Specific Conditions for this NWP
K. CZM Consistency Response Specific Conditions for this NWP
L. Additional Limitations on the Use of NWPs
In addition to any special condition that may be required on a case -by -case basis by
the District Engineer, the following terms and conditions must be met, as applicable,
for a Nationwide Permit 12 authorization to be valid in Washington State.
A. DESCRIPTION OF AUTHORIZED ACTIVITIES
12. Utility Line Activities. Activities required for the construction, maintenance, repair, and removal of utility
lines and associated facilities in waters of the United States, provided the activity does not result in the loss of
greater than 1/2 acre of waters of the United States.
Utility lines: This NWP authorizes the construction, maintenance, or repair of utility lines, including outfall and
intake structures, and the associated excavation, backfill, or bedding for the utility lines, in all waters of the United
States, provided there is no change in pre -construction contours. A "utility line" is defined as any pipe or pipeline
for the transportation of any gaseous, liquid, liquescent, or slurry substance, for any purpose, and any cable, line, or
wire for the transmission for any purpose of electrical energy, telephone, and telegraph messages, and radio and
television communication. The term "utility line" does not include activities that drain a water of the United States,
such as drainage tile or French drains, but it does apply to pipes conveying drainage from another area.
Material resulting from trench excavation may be temporarily sidecast into waters of the United States for no
more than three months, provided the material is not placed in such a manner that it is dispersed by currents or other
forces. The district engineer may extend the period of temporary side casting for no more than a total of 180 days,
where appropriate. In wetlands, the top 6 to 12 inches of the trench should normally be backfilled with topsoil from
the trench. The trench cannot be constructed or backfilled in such a manner as to drain waters of the United States
(e.g., backfilling with extensive gravel layers, creating a French drain effect). Any exposed slopes and stream banks
must be stabilized immediately upon completion of the utility line crossing of each waterbody.
Utility line substations: This NWP authorizes the construction, maintenance, or expansion of substation
facilities associated with a power line or utility line in non -tidal waters of the United States, provided the activity, in
combination with all other activities included in one single and complete project, does not result in the loss of
greater than 1/2 acre of waters of the United States. This NWP does not authorize discharges into non -tidal wetlands
adjacent to tidal waters of the United States to construct, maintain, or expand substation facilities.
Foundations for overhead utility line towers, poles, and anchors: This NWP authorizes the construction or
maintenance of foundations for overhead utility line towers, poles, and anchors in all waters of the United States,
provided the foundations are the minimum size necessary and separate footings for each tower leg (rather than a
larger single pad) are used where feasible.
Access roads: This NWP authorizes the construction of access roads for the construction and maintenance of
utility lines, including overhead power lines and utility line substations, in non -tidal waters of the United States,
provided the total discharge from a single and complete project does not cause the loss of greater than 1/2-acre of
non -tidal waters of the United States. This NWP does not authorize discharges into non -tidal wetlands adjacent to
tidal waters for access roads. Access roads must be the minimum width necessary (see Note 2, below). Access roads
must be constructed so that the length of the road minimizes any adverse effects on waters of the United States and
must be as near as possible to pre -construction contours and elevations (e.g., at grade corduroy roads or
geotextile/gravel roads). Access roads constructed above pre -construction contours and elevations in waters of the
United States must be properly bridged or culverted to maintain surface flows.
This NWP may authorize utility lines in or affecting navigable waters of the United States even if there is no
associated discharge of dredged or fill material (See 33 CFR Part 322). Overhead utility lines constructed over
section 10 waters and utility lines that are routed in or under section 10 waters without a discharge of dredged or fill
material require a section 10 permit.
This NWP also authorizes temporary structures, fills, and work necessary to conduct the utility line activity.
Appropriate measures must be taken to maintain normal downstream flows and minimize flooding to the maximum
extent practicable, when temporary structures, work, and discharges, including cofferdams, are necessary for
construction activities, access fills, or dewatering of construction sites. Temporary fills must consist of materials,
and be placed in a manner, that will not be eroded by expected high flows. Temporary fills must be removed in their
entirety and the affected areas returned to pre -construction elevations. The areas affected by temporary fills must be
revegetated, as appropriate.
Notification: The permittee must submit a pre -construction notification to the district engineer prior to
commencing the activity if any of the following criteria are met: (1) the activity involves mechanized land clearing
in a forested wetland for the utility line right-of-way; (2) a section 10 permit is required; (3) the utility line in waters
of the United States, excluding overhead lines, exceeds 500 feet; (4) the utility line is placed within a jurisdictional
area (i.e., water of the United States), and it runs parallel to a stream bed that is within that jurisdictional area; (5)
discharges that result in the loss of greater than 1/10-acre of waters of the United States; (6) permanent access roads
are constructed above grade in waters of the United States for a distance of more than 500 feet; or (7) permanent
access roads are constructed in waters of the United States with impervious materials. (See general condition 27.)
(Sections 10 and 404)
Note 1: Where the proposed utility line is constructed or installed in navigable waters of the United States (i.e.,
section 10 waters), copies of the pre -construction notification and NWP verification will be sent by the Corps to the
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), for charting the utility
line to protect navigation.
Note 2: Access roads used for both construction and maintenance may be authorized, provided they meet the
terms and conditions of this NWP. Access roads used solely for construction of the utility line must be removed
upon completion of the work, accordance with the requirements for temporary fills.
Note 3: Pipes or pipelines used to transport gaseous, liquid, liquescent, or slurry substances over navigable
waters of the United States are considered to be bridges, not utility lines, and may require a permit from the U.S.
Coast Guard pursuant to Section 9 of the Rivers and Harbors Act of 1899. However, any discharges of dredged or
fill material into waters of the United States associated with such pipelines will require a section 404 permit (see
NWP 15).
B. CORPS NATIONAL GENERAL CONDITIONS FOR ALL NWPs
1. Navigation. (a) No activity may cause more than a minimal adverse effect on navigation. (b) Any safety
lights and signals prescribed by the U.S. Coast Guard, through regulations or otherwise, must be installed and
maintained at the permittee's expense on authorized facilities in navigable waters of the United States. (c) The
permittee understands and agrees that, if future operations by the United States require the removal, relocation, or
other alteration, of the structure or work herein authorized, or if, in the opinion of the Secretary of the Army or his
authorized representative, said structure or work shall cause unreasonable obstruction to the free navigation of the
navigable waters, the permittee will be required, upon due notice from the Corps of Engineers, to remove, relocate,
or alter the structural work or obstructions caused thereby, without expense to the United States. No claim shall be
made against the United States on account of any such removal or alteration.
2. Aquatic Life Movements. No activity may substantially disrupt the necessary life cycle movements of those
species of aquatic life indigenous to the waterbody, including those species that normally migrate through the area,
unless the activity's primary purpose is to impound water. Culverts placed in streams must be installed to maintain
low flow conditions.
3. Spawning Areas. Activities in spawning areas during spawning seasons must be avoided to the maximum
extent practicable. Activities that result in the physical destruction (e.g., through excavation, fill, or downstream
smothering by substantial turbidity) of an important spawning area are not authorized.
4. Mi rg atory Bird Breeding Areas. Activities in waters of the United States that serve as breeding areas for
migratory birds must be avoided to the maximum extent practicable.
5. Shellfish Beds. No activity may occur in areas of concentrated shellfish populations, unless the activity is
directly related to a shellfish harvesting activity authorized by NWPs 4 and 48.
6. Suitable Material. No activity may use unsuitable material (e.g., trash, debris, car bodies, asphalt, etc.).
Material used for construction or discharged must be free from toxic pollutants in toxic amounts (see Section 307 of
the Clean Water Act).
7. Water Supply Intakes. No activity may occur in the proximity of a public water supply intake, except where
the activity is for the repair or improvement of public water supply intake structures or adjacent bank stabilization.
8. Adverse Effects From Impoundments. If the activity creates an impoundment of water, adverse effects to the
aquatic system due to accelerating the passage of water, and/or restricting its flow must be minimized to the
maximum extent practicable.
9. Management of Water Flows. To the maximum extent practicable, the pre -construction course, condition,
capacity, and location of open waters must be maintained for each activity, including stream channelization and
storm water management activities, except as provided below. The activity must be constructed to withstand
expected high flows. The activity must not restrict or impede the passage of normal or high flows, unless the
primary purpose of the activity is to impound water or manage high flows. The activity may alter the pre -
construction course, condition, capacity, and location of open waters if it benefits the aquatic environment (e.g.,
stream restoration or relocation activities).
10. Fills Within 100-Year Floodplains. The activity must comply with applicable FEMA-approved state or local
floodplain management requirements.
11. Equipment. Heavy equipment working in wetlands or mudflats must be placed on mats, or other measures
must be taken to minimize soil disturbance.
12. Soil Erosion and Sediment Controls. Appropriate soil erosion and sediment controls must be used and
maintained in effective operating condition during construction, and all exposed soil and other fills, as well as any
work below the ordinary high water mark or high tide line, must be permanently stabilized at the earliest practicable
t, q
date. Permittees are encouraged to perform work within waters of the United States during periods of low -flow or
no -flow.
13. Removal of Temporary Fills. Temporary fills must be removed in their entirety and the affected areas
returned to pre -construction elevations. The affected areas must be revegetated, as appropriate.
14. Proper Maintenance. Any authorized structure or fill shall be properly maintained, including maintenance to
ensure public safety.
15. Wild and Scenic Rivers. No activity may occur in a component of the National Wild and Scenic River
System, or in a river officially designated by Congress as a "study river" for possible inclusion in the system while
the river is in an official study status, unless the appropriate Federal agency with direct management responsibility
for such river, has determined in writing that the proposed activity will not adversely affect the Wild and Scenic
River designation or study status. Information on Wild and Scenic Rivers may be obtained from the appropriate
Federal land management agency in the area (e.g., National Park Service, U.S. Forest Service, Bureau of Land
Management, U.S. Fish and Wildlife Service).
16. Tribal Rights. No activity or its operation may impair reserved tribal rights, including, but not limited to,
reserved water rights and treaty fishing and hunting rights.
17. Endangered Species. (a) No activity is authorized under any NWP which is likely to jeopardize the
continued existence of a threatened or endangered species or a species proposed for such designation, as identified
under the Federal Endangered Species Act (ESA), or which will destroy or adversely modify the critical habitat of
such species. No activity is authorized under any NWP which "may affect" a listed species or critical habitat, unless
Section 7 consultation addressing the effects of the proposed activity has been completed. (b) Federal agencies
should follow their own procedures for complying with the requirements of the ESA. Federal permittees must
provide the district engineer with the appropriate documentation to demonstrate compliance with those
requirements. (c) Non-federal permittees shall notify the district engineer if any listed species or designated critical
habitat might be affected or is in the vicinity of the project, or if the project is located in designated critical habitat,
and shall not begin work on the activity until notified by the district engineer that the requirements of the ESA have
been satisfied and that the activity is authorized. For activities that might affect Federally -listed endangered or
threatened species or designated critical habitat, the pre -construction notification must include the name(s) of the
endangered or threatened species that may be affected by the proposed work or that utilize the designated critical
habitat that may be affected by the proposed work. The district engineer will determine whether the proposed
activity "may affect" or will have "no effect" to listed species and designated critical habitat and will notify the non -
Federal applicant of the Corps' determination within 45 days of receipt of a complete pre -construction notification.
In cases where the non -Federal applicant has identified listed species or critical habitat that might be affected or is in
the vicinity of the project, and has so notified the Corps, the applicant shall not begin work until the Corps has
provided notification the proposed activities will have "no effect" on listed species or critical habitat, or until
Section 7 consultation has been completed. (d) As a result of formal or informal consultation with the FWS or
NMFS the district engineer may add species -specific regional endangered species conditions to the NWPs. (e)
Authorization of an activity by a NWP does not authorize the "take" of a threatened or endangered species as
defined under the ESA. In the absence of separate authorization (e.g., an ESA Section 10 Permit, a Biological
Opinion with "incidental take" provisions, etc.) from the U.S. FWS or the NMFS, both lethal and non -lethal "takes"
of protected species are in violation of the ESA. Information on the location of threatened and endangered species
and their critical habitat can be obtained directly from the offices of the U.S. FWS and NMFS or their World Wide
Web pages at http://xn+nv.fws.jzov/and http://www.noaa..eovlfisheries.himl respectively.
18. Historic Properties. (a) In cases where the district engineer determines that the activity may affect properties
listed, or eligible for listing, in the National Register of Historic Places, the activity is not authorized, until the
requirements of Section 106 of the National Historic Preservation Act (NHPA) have been satisfied. (b) Federal
permittees should follow their own procedures for complying with the requirements of Section 106 of the National
Historic Preservation Act. Federal permittees must provide the district engineer with the appropriate documentation
to demonstrate compliance with those requirements. (c) Non-federal permittees must submit a pre -construction
notification to the district engineer if the authorized activity may have the potential to cause effects to any historic
properties listed, determined to be eligible for listing on, or potentially eligible for listing on the National Register of
,0
Historic Places, including previously unidentified properties. For such activities, the pre -construction notification
must state which historic properties may be affected by the proposed work or include a vicinity map indicating the
location of the historic properties or the potential for the presence of historic properties. Assistance regarding
information on the location of or potential for the presence of historic resources can be sought from the State
Historic Preservation Officer or Tribal Historic Preservation Officer, as appropriate, and the National Register of
Historic Places (see 33 CFR 330.4(g)). The district engineer shall make a reasonable and good faith effort to carry
out appropriate identification efforts, which may include background research, consultation, oral history interviews,
sample field investigation, and field survey. Based on the information submitted and these efforts, the district
engineer shall determine whether the proposed activity has the potential to cause an effect on the historic properties.
Where the non -Federal applicant has identified historic properties which the activity may have the potential to cause
effects and so notified the Corps, the non -Federal applicant shall not begin the activity until notified by the district
engineer either that the activity has no potential to cause effects or that consultation under Section 106 of the NHPA
has been completed. (d) The district engineer will notify the prospective permittee within 45 days of receipt of a
complete pre -construction notification whether NHPA Section 106 consultation is required. Section 106
consultation is not required when the Corps determines that the activity does not have the potential to cause effects
on historic properties (see 36 CFR §800.3(a)). If NHPA section 106 consultation is required and will occur, the
district engineer will notify the non -Federal applicant that he or she cannot begin work until Section 106
consultation is completed. (e) Prospective permittees should be aware that section 110k of the NHPA (16 U.S.C.
470h-2(k)) prevents the Corps from granting a permit or other assistance to an applicant who, with intent to avoid
the requirements of Section 106 of the NHPA, has intentionally significantly adversely affected a historic property
to which the permit would relate, or having legal power to prevent it, allowed such significant adverse effect to
occur, unless the Corps, after consultation with the Advisory Council on Historic Preservation (ACHP), determines
that circumstances justify granting such assistance despite the adverse effect created or permitted by the applicant.
If circumstances justify granting the assistance, the Corps is required to notify the ACHP and provide documentation
specifying the circumstances, explaining the degree of damage to the integrity of any historic properties affected,
and proposed mitigation. This documentation must include any views obtained from the applicant, SHPO/THPO,
appropriate Indian tribes if the undertaking occurs on or affects historic properties on tribal lands or affects
properties of interest to those tribes, and other parties known to have a legitimate interest in the impacts to the
permitted activity on historic properties.
19. Designated Critical Resource Waters. Critical resource waters include NOAA-designated marine
sanctuaries, National Estuarine Research Reserves, state natural heritage sites, and outstanding national resource
waters or other waters officially designated by a state as having particular environmental or ecological significance
and identified by the district engineer after notice and opportunity for public comment. The district engineer may
also designate additional critical resource waters after notice and opportunity for comment. (a) Discharges of
dredged or fill material into waters of the United States are not authorized by NWPs 7, 12, 14, 16, 17, 21, 29, 31, 35,
39, 40, 42, 43, 44, 49, and 50 for any activity within, or directly affecting, critical resource waters, including
wetlands adjacent to such waters. (b) For NWPs 3, 8, 10, 13, 15, 18, 19, 22, 23, 25, 27, 28, 30, 33, 34, 36, 37, and
38, notification is required in accordance with general condition 27, for any activity proposed in the designated
critical resource waters including wetlands adjacent to those waters. The district engineer may authorize activities
under these NWPs only after it is determined that the impacts to the critical resource waters will be no more than
minimal.
20. Miti ag tion. The district engineer will consider the following factors when determining appropriate and
practicable mitigation necessary to ensure that adverse effects on the aquatic environment are minimal: (a) The
activity must be designed and constructed to avoid and minimize adverse effects, both temporary and permanent, to
waters of the United States to the maximum extent practicable at the project site (i.e., on site). (b) Mitigation in all
its forms (avoiding, minimizing, rectifying, reducing, or compensating) will be required to the extent necessary to
ensure that the adverse effects to the aquatic environment are minimal. (c)Compensatory mitigation at a minimum
one -for -one ratio will be required for all wetland losses that exceed 1/10 acre and require pre -construction
notification, unless the district engineer determines in writing that some other form of mitigation would be more
environmentally appropriate and provides a project -specific waiver of this requirement. For wetland losses of 1/10
acre or less that require pre -construction notification, the district engineer may determine on a case -by -case basis
that compensatory mitigation is required to ensure that the activity results in minimal adverse effects on the aquatic
environment. Since the likelihood of success is greater and the impacts to potentially valuable uplands are reduced,
wetland restoration should be the first compensatory mitigation option considered. (d) For losses of streams or other
t
open waters that require pre -construction notification, the district engineer may require compensatory mitigation,
such as stream restoration, to ensure that the activity results in minimal adverse effects on the aquatic environment.
(e) Compensatory mitigation will not be used to increase the acreage losses allowed by the acreage limits of the
NWPs. For example, if an NWP has an acreage limit of 1/2 acre, it cannot be used to authorize any project resulting
in the loss of greater than 1/2 acre of waters of the United States, even if compensatory mitigation is provided that
replaces or restores some of the lost waters. However, compensatory mitigation can and should be used, as
necessary, to ensure that a project already meeting the established acreage limits also satisfies the minimal impact
requirement associated with the NWPs. (f) Compensatory mitigation plans for projects in or near streams or other
open waters will normally include a requirement for the establishment, maintenance, and legal protection (e.g.,
conservation easements) of riparian areas next to open waters. In some cases, riparian areas may be the only
compensatory mitigation required. Riparian areas should consist of native species. The width of the required riparian
area will address documented water quality or aquatic habitat loss concerns. Normally, the riparian area will be 25 to
50 feet wide on each side of the stream, but the district engineer may require slightly wider riparian areas to address
documented water quality or habitat loss concerns. Where both wetlands and open waters exist on the project site,
the district engineer will determine the appropriate compensatory mitigation (e.g., riparian areas and/or wetlands
compensation) based on what is best for the aquatic environment on a watershed basis. In cases where riparian areas
are determined to be the most appropriate form of compensatory mitigation, the district engineer may waive or
reduce the requirement to provide wetland compensatory mitigation for wetland losses. (g) Permittees may propose
the use of mitigation banks, in -lieu fee arrangements or separate activity -specific compensatory mitigation. In all
cases, the mitigation provisions will specify the party responsible for accomplishing and/or complying with the
mitigation plan. (h) Where certain functions and services of waters of the United States are permanently adversely
affected, such as the conversion of a forested or scrub -shrub wetland to a herbaceous wetland in a permanently
maintained utility line right-of-way, mitigation may be required to reduce the adverse effects of the project to the
minimal level.
21. Water Quality. Where States and authorized Tribes, or EPA where applicable, have not previously certified
compliance of an NWP with CWA Section 401, individual 401 Water Quality Certification must be obtained or
waived (see 33 CFR 330.4(c)). The district engineer or State or Tribe may require additional water quality
management measures to ensure that the authorized activity does not result in more than minimal degradation of
water quality.
22. Coastal Zone Mana eg ment. In coastal states where an NWP has not previously received a state coastal zone
management consistency concurrence, an individual state coastal zone management consistency concurrence must
be obtained, or a presumption of concurrence must occur (see 33 CFR 330.4(d)). The district engineer or a State
may require additional measures to ensure that the authorized activity is consistent with state coastal zone
management requirements.
23. Regional and Case -By -Case Conditions. The activity must comply with any regional conditions that may
have been added by the Division Engineer (see 33 CFR 330.4(e)) and with any case specific conditions added by the
Corps or by the state, Indian Tribe, or U.S. EPA in its section 401 Water Quality Certification, or by the state in its
Coastal Zone Management Act consistency determination.
24. Use of Multiple Nationwide Permits. The use of more than one NWP for a single and complete project is
prohibited, except when the acreage loss of waters of the United States authorized by the NWPs does not exceed the
acreage limit of the NWP with the highest specified acreage limit. For example, if a road crossing over tidal waters
is constructed under NWP 14, with associated bank stabilization authorized by NWP 13, the maximum acreage loss
of waters of the United States for the total project cannot exceed 1/3-acre.
25. Transfer of Nationwide Permit Verifications. If the permittee sells the property associated with a nationwide
permit verification, the permittee may transfer the nationwide permit verification to the new owner by submitting a
letter to the appropriate Corps district office to validate the transfer. A copy of the nationwide permit verification
must be attached to the letter, and the letter must contain the following statement and signature:
"When the structures or work authorized by this nationwide permit are still in existence at the time the property
is transferred, the terms and conditions of this nationwide permit, including any special conditions, will continue to
be binding on the new owner(s) of the property. To validate the transfer of this nationwide permit and the associated
liabilities associated with compliance with its terms and conditions, have the transferee sign and date below."
(Transferee)
(Date)
26. Compliance Certification. Each permittee who received an NWP verification from the Corps must submit a
signed certification regarding the completed work and any required mitigation. The certification form must be
forwarded by the Corps with the NWP verification letter and will include: (a) A statement that the authorized work
was done in accordance with the NWP authorization, including any general or specific conditions; (b) A statement
that any required mitigation was completed in accordance with the permit conditions; and (c) The signature of the
permittee certifying the completion of the work and mitigation.
27. Pre -Construction Notification. (a) Timing. Where required by the terms of the NWP, the prospective
permittee must notify the district engineer by submitting a pre -construction notification (PCN) as early as possible.
The district engineer must determine if the PCN is complete within 30 calendar days of the date of receipt and, as a
general rule, will request additional information necessary to make the PCN complete only once. However, if the
prospective permittee does not provide all of the requested information, then the district engineer will notify the
prospective permittee that the PCN. is still incomplete and the PCN review process will not commence until all of the
requested information has been received by the district engineer. The prospective permittee shall not begin the
activity: (1) Until notified in writing by the district engineer that the activity may proceed under the NWP with any
special conditions imposed by the district or division engineer; or (2) If 45 calendar days have passed from the
district engineer's receipt of the complete PCN and the prospective permittee has not received written notice from
the district or division engineer. However, if the permittee was required to notify the Corps pursuant to general
condition 17 that listed species or critical habitat might affected or in the vicinity of the project, or to notify the
Corps pursuant to general condition 18 that the activity may have the potential to cause effects to historic properties,
the permittee cannot begin the activity until receiving written notification from the Corps that is "no effect" on listed
species or "no potential to cause effects" on historic properties, or that any consultation required under Section 7 of
the Endangered Species Act (see 33 CFR 330.4(f)) and/or Section 106 of the National Historic Preservation (see 33
CFR 330.4(g)) is completed. Also, work cannot begin under NWPs 21, 49, or 50 until the permittee has received
written approval from the Corps. If the proposed activity requires a written waiver to exceed specified limits of an
NWP, the permittee cannot begin the activity until the district engineer issues the waiver. If the district or division
engineer notifies the permittee in writing that an individual permit is required within 45 calendar days of receipt of a
complete PCN, the permittee cannot begin the activity until an individual permit has been obtained. Subsequently,
the permittee's right to proceed under the NWP may be modified, suspended, or revoked only in accordance with
the procedure set forth in 33 CFR 330.5(d)(2).
(b) Contents of Pre -Construction Notification: The PCN must be in writing and include the following
information: (1) Name, address and telephone numbers of the prospective permittee; (2) Location of the proposed
project; (3) A description of the proposed project; the project's purpose; direct and indirect adverse environmental
effects the project would cause; any other NWP(s), regional general permit(s), or individual permit(s) used or
intended to be used to authorize any part of the proposed project or any related activity. The description should be
sufficiently detailed to allow the district engineer to determine that the adverse effects of the project will be minimal
and to determine the need for compensatory mitigation. Sketches should be provided when necessary to show that
the activity complies with the terms of the NWP. (Sketches usually clarify the project and when provided result in a
quicker decision.); (4) The PCN must include a delineation of special aquatic sites and other waters of the United
States on the project site. Wetland delineations must be prepared in accordance with the current method required by
the Corps. The permittee may ask the Corps to delineate the special aquatic sites and other waters of the United
States, but there may be a delay if the Corps does the delineation, especially if the project site is large or contains
many waters of the United States. Furthermore, the 45 day period will not start until the delineation has been
submitted to or completed by the Corps, where appropriate; (5) If the proposed activity will result in the loss of
greater than 1/10 acre of wetlands and a PCN is required, the prospective permittee must submit a statement
describing how the mitigation requirement will be satisfied. As an alternative, the prospective permittee may submit
a conceptual or detailed mitigation plan. (6) If any listed species or designated critical habitat might be affected or is
in the vicinity of the project, or if the project is located in designated critical habitat, for non -Federal applicants the
PCN must include the name(s) of those endangered or threatened species that might be affected by the proposed
work or utilize the designated critical habitat that may be affected by the proposed work. Federal applicants must
provide documentation demonstrating compliance with the Endangered Species Act; and (7) For an activity that may
affect a historic property listed on, determined to be eligible for listing on, or potentially eligible for listing on, the
National Register of Historic Places, for non -Federal applicants the PCN must state which historic property may be
affected by the proposed work or include a vicinity map indicating the location of the historic property. Federal
applicants must provide documentation demonstrating compliance with Section 106 of the National Historic
Preservation Act.
(c) Form of Pre -Construction Notification: The standard individual permit application form (Form ENG 4345)
may be used, but the completed application form must clearly indicate that it is a PCN and must include all of the
information required in paragraphs (b)(1) through (7) of this general condition. A letter containing the required
information may also be used.
(d) Agency Coordination: (1) The district engineer will consider any comments from Federal and state agencies
concerning the proposed activity's compliance with the terms and conditions of the NWPs and the need for
mitigation to reduce the project's adverse environmental effects to a minimal level. (2) For all NWP 48 activities
requiring pre -construction notification and for other NWP activities requiring pre -construction notification to the
district engineer that result in the loss of greater than 1/2-acre of waters of the United States, the district engineer
will immediately provide (e.g., via facsimile transmission, overnight mail, or other expeditious manner) a copy of
the PCN to the appropriate Federal or state offices (U.S. FWS, state natural resource or water quality agency, EPA,
State Historic Preservation Officer (SHPO) or Tribal Historic Preservation Office (THPO), and, if appropriate, the
NMFS). With the exception of NWP 37, these agencies will then have 10 calendar days from the date the material is
transmitted to telephone or fax the district engineer notice that they intend to provide substantive, site -specific
comments. If so contacted by an agency, the district engineer will wait an additional 15 calendar days before making
a decision on the pre -construction notification. The district engineer will fully consider agency comments received
within the specified time frame, but will provide no response to the resource agency, except as provided below. The
district engineer will indicate in the administrative record associated with each pre -construction notification that the
resource agencies' concerns were considered. For NWP 37, the emergency watershed protection and rehabilitation
activity may proceed immediately in cases where there is an unacceptable hazard to life or a significant loss of
property or economic hardship will occur. The district engineer will consider any comments received to decide
whether the NWP 37 authorization should be modified, suspended, or revoked in accordance with the procedures at
33 CFR 330.5. (3) In cases of where the prospective permittee is not a Federal agency, the district engineer will
provide a response to NMFS within 30 calendar days of receipt of any Essential Fish Habitat conservation
recommendations, as required by Section 305(b)(4)(B) of the Magnuson -Stevens Fishery Conservation and
Management Act. (4) Applicants are encouraged to provide the Corps multiple copies of pre -construction
notifications to expedite agency coordination. (5) For NWP 48 activities that require reporting, the district engineer
will provide a copy of each report within 10 calendar days of receipt to the appropriate regional office of the NMFS.
(e) District Engineer's Decision: In reviewing the PCN for the proposed activity, the district engineer will
determine whether the activity authorized by the NWP will result in more than minimal individual or cumulative
adverse environmental effects or may be contrary to the public interest. If the proposed activity requires a PCN and
will result in a loss of greater than 1/10 acre of wetlands, the prospective permittee should submit a mitigation
proposal with the PCN. Applicants may also propose compensatory mitigation for projects with smaller impacts.
The district engineer will consider any proposed compensatory mitigation the applicant has included in the proposal
in determining whether the net adverse environmental effects to the aquatic environment of the proposed work are
minimal. The compensatory mitigation proposal may be either conceptual or detailed. If the district engineer
determines that the activity complies with the terms and conditions of the NWP and that the adverse effects on the
aquatic environment are minimal, after considering mitigation, the district engineer will notify the permittee and
include any conditions the district engineer deems necessary. The district engineer must approve any compensatory
mitigation proposal before the permittee commences work. If the prospective permittee elects to submit a
compensatory mitigation plan with the PCN, the district engineer will expeditiously review the proposed
compensatory mitigation plan. The district engineer must review the plan within 45 calendar days of receiving a
complete PCN and determine whether the proposed mitigation would ensure no more than minimal adverse effects
on the aquatic environment. If the net adverse effects of the project on the aquatic environment (after consideration
of the compensatory mitigation proposal) are determined by the district engineer to be minimal, the district engineer
will provide a timely written response to the applicant. The response will state that the project can proceed under the
terms and conditions of the NWP.
If the district engineer determines that the adverse effects of the proposed work are more than minimal, then the
district engineer will notify the applicant either: (1) That the project does not qualify for authorization under the
NWP and instruct the applicant on the procedures to seek authorization under an individual permit; (2) that the
project is authorized under the NWP subject to the applicant's submission of a mitigation plan that would reduce the
adverse effects on the aquatic environment to the minimal level; or (3) that the project is authorized under the NWP
with specific modifications or conditions. Where the district engineer determines that mitigation is required to
ensure no more than minimal adverse effects occur to the aquatic environment, the activity will be authorized within
the 45-day PCN period. The authorization will include the necessary conceptual or specific mitigation or a
requirement that the applicant submit a mitigation plan that would reduce the adverse effects on the aquatic
environment to the minimal level. When mitigation is required, no work in waters of the United States may occur
until the district engineer has approved a specific mitigation plan.
28. Single and Complete Project. The activity must be a single and complete project. The same NWP cannot be
used more than once for the same single and complete project.
C. Corps Seattle District Regional General Conditions
1. Aquatic Resources Requiring Special Protection. The following restrictions apply to activities in Washington
State requiring Department of the Army authorization:
(a) Activities resulting in a loss of waters of the United States in a mature forested wetland, bog, bog -like
wetland, aspen -dominated wetland, or alkali wetland are not authorized by NWP, except the following NWPs:
NWP 3 — Maintenance
NWP 20 — Oil Spill Cleanup
NWP 32 — Completed Enforcement Actions
NWP 38 — Cleanup of Hazardous and Toxic Waste
NWP 47 — Pipeline Safety Program Designated Time Sensitive Inspections and Repairs
(b) For activities in or affecting a mature forested wetland, bog, bog -like wetland, wetland in a dunal system
along the Washington coast, vernal pool, aspen -dominated wetland, alkali wetland, camas prairie wetland, or marine
water with eelgrass beds (except for NWP 48) and not prohibited by the preceding general regional condition ].a.,
the permittee must submit a pre -construction notification to the District Engineer in accordance with Nationwide
Permit General Condition 27 (Pre -Construction Notification).
2. Access. You must allow representatives of this office to inspect the authorized activity at any time deemed
necessary to ensure that the work is being, or has been, accomplished in accordance with the terms and conditions of
your permit.
3. Commencement Bay. Activities requiring Department of the Army authorization and located in the
Commencement Bay Study Area are not authorized by the following NWPs:
NWP 12
— Utility Line Activities (substations)
NWP 13
— Bank Stabilization
NWP 14
— Linear Transportation Projects
NWP 23
— Approved Categorical Exclusions
NWP 29
— Residential Developments
NWP 39
— Commercial and Institutional Developments
NWP 40
— Agricultural Activities
NWP 41
— Reshaping Existing Drainage Ditches
NWP 42
— Recreational Facilities
NWP 43
— Stormwater Management Facilities
4. Bank Stabilization. All bank stabilization projects require pre -construction notification to the District Engineer in
accordance with Nationwide Permit General Condition 27 (Pre -Construction Notification). Each notification must
include a planting plan using native riparian plant species unless the applicant demonstrates that a planting plan is
not appropriate or not practicable. Each notification must also include the following information, except as waived
by the District Engineer:
(a) Need for the work, including the cause of the erosion and the threat posed to structures, infrastructure,
and/or public safety.
(b) Current and expected post -project sediment movement and deposition patterns in and near the project area.
(c) Current and expected post -project habitat conditions, including the presence of fish, wildlife and plant
species in the project area.
(d) Demonstration that the proposed project incorporates the least environmentally damaging practicable bank
protection methods. These methods include, but are not limited to, the use of bioengineering, biotechnical design,
root wads, large woody debris, native plantings, and beach nourishment in certain circumstances. If rock must be
used due to site erosion conditions, explain how the bank stabilization structure incorporates elements beneficial to
fish.
(e) Assessment of the likely impact of the proposed work on upstream, downstream and cross -stream
properties (at a minimum the area assessed should extend from the nearest upstream bend to the nearest downstream
bend of the watercourse). Discuss the methodology used for determining effects.
NOTE: Information on designing bank stabilization projects can be found in the Washington Department of Fish
and Wildlife's Integrated Streambank Protection Guidelines(httn://www.wdfw.wa.Qov/hab/ahg/ispgdoc.htm); King
County's Reconnaissance Assessment of the State of the Nearshore Ecosystem
(httn://dnr.metrokc.gov/wlr/watersheds/puget/nearshore/sonr.htm); and three technical (white) papers -Marine and
Estuarine Shoreline Modification Issues, Ecological Issues in Floodplains and Riparian Corridors, and Over -Water
Structures: Marine, Freshwater, and Treated Wood Issues(httn://wdfw.wa.Qov/hab/ahz/ahewhite.htm).
5. Cultural Resources and Human Burials. Permittees must immediately stop work and notify the District Engineer
within 24 hours if, during the course of conducting authorized work, human burials, cultural resources, or historic
properties, as identified by the National Historic Preservation Act, are discovered and may be affected by the work.
Failure to stop work in the area of discovery until the Corps can comply with the provisions of 33 CFR 325
Appendix C, the National Historic Preservation Act, and other pertinent laws and regulations could result in a
violation of state and federal laws. Violators are subject to civil and criminal penalties.
6. Essential Fish Habitat. An activity which may adversely affect essential fish habitat, as identified under the
Magnuson -Stevens Fishery Conservation and Management Act (MSA), may not be authorized by NWP until
essential fish habitat requirements have been met by the applicant and the Corps. Non-federal permittees shall
notify the District Engineer if essential fish habitat may be affected by, or is in the vicinity of, a proposed activity
and shall not begin work until notified by the District Engineer that the requirements of the essential fish habitat
provisions of the MSA have been satisfied and the activity is authorized. The notification must identify the type(s)
of essential fish habitat (i.e., Pacific salmon, groundfish, and/or coastal -pelagic species) managed by a Fishery
Management Plan that may be affected. Information about essential fish habitat is available at
httv://www.nwr.noaa.-aovl
7. Vegetation Protection and Restoration. Permittees must clearly mark all construction area boundaries before
beginning work and minimize the removal of native vegetation in riparian areas and wetlands to the maximum
extent practicable. Areas subject to temporary vegetation removal in wetlands or riparian areas during construction
shall be replanted with appropriate native species by the end of the first planting season following the disturbance
except as waived by the District Engineer.
D. Corps Regional Specific Conditions for this NWT
1. When backfilling trenches in wetlands, no more than 10 percent of the soil used to backfill the top 12 inches of
the trench may consist of subsurface soil.
2. The permittee must submit a pre -construction notification to the District Engineer in accordance with National
General Condition 27 (Pre -Construction Notification) for mechanized landclearing in a forested wetland for the
construction of a substation.
I
3. A pre -construction notification must include drawings and/or a description of the measures that will be used to
prevent permanent drainage of adjacent areas by the backfilled trench and/or along the buried utility line.
NOTE: In waters subject to scour, permittee may be required to determine the scour level for the watercourse the
utility line will cross and may be required to place the line below the scour level of the watercourse.
NOTE: The National Ocean Service (NOS) must be notified when the Corps authorizes a submerged utility line.
The applicant must notify the NOS and the Corps in writing, at least 2 weeks before work begins and upon
completion of the activity authorized by this permit. The notification of completion must include a drawing which
certifies the location and configuration of the completed activity. Notifications to NOS should be sent to:
NOAA/NOS, Office of Coast Survey, N/CS261, 1315 East-West Highway, Silver Spring, Maryland 20910-3283.
E. State 401 Certification General Conditions
1. For in -water construction activities. Individual 401 review is required under this condition for projects or
activities authorized under NWPs that will cause, or be likely to cause or contribute to an exceedence of a State
water quality standard (WAC 173-201A) or sediment management standard (WAC 173-204).
State water quality standards can be located on Ecology's website: h0://www.ecv.wa.gov/programs/wq/swgs/.
Sediment management standards can be located on Ecology's website:
http: //www. ecv. wa.gov/biblio/wac173204. html.
Information is also available by contacting Ecology's Federal Permit staff.
2. Projects or Activities Discharging to Impaired Waters. Individual 401 review is required by this condition for
projects or activities authorized under NWPs if the project or activity may result in further exceedences of a specific
parameter the waterbody is listed for on the state's list of impaired waterbodies (the 303(d) list).
The current 303(d) listed waterbodies can be identified using search tools available on Ecology's website:
htt,u://www.ecy.wa..eovlprogramslwa/303dl2002l2002-index.htmI or by contacting Ecology's Federal Permit staff.
3. Notification. For projects or activities that will require individual 401 review, applicants must provide Ecology
with the written documentation provided to the Corps (as described in Corps Nationwide Permit General Condition
27, Pre -Construction Notification), including, when applicable:
(a) A description of the project, including site plans, project purpose, direct and indirect adverse environmental
effects the project would cause, any other Department of the Army permits used or intended to be used to authorize
any part of the proposed project or any related activity.
(b) Delineation of special aquatic sites and other waters of the United States. Wetland delineations must be
prepared in accordance with the current method required by the Corps and shall include Ecology's Wetland Rating
form. Note: Forms are available at Ecology's Wetlands website:
http://www.ecy. wa.jzov/programs/sea/wetlands/index.html or by contacting Ecology's Federal Permit staff.
(c) Coastal Zone Management Program "Certification of Consistency" Form if the project is located within a
coastal county (Clallam, Grays Harbor, Island, Jefferson, King, Kitsap, Mason, Pacific, Pierce, San Juan, Skagit,
Snohomish, Thurston, Wahkiakum, and Whatcom counties).
Note: Forms are available at the Army Corps of Engineers website: ho://www.nws.usace.armv.mil
or by contacting Ecology's Federal Permit staff.
(d) Other applicable requirements of Corps Nationwide Permit General Condition 27, Corps Regional
Conditions, or notification conditions of the applicable NWP.
Ecology's review time shall not begin until the applicable documents noted above have been provided to Ecology
and Ecology has received a copy of the final Nationwide Permit verification letter from the Corps.
4. Aquatic resources requiring special protection. Certain aquatic resources are unique, difficult -to -replace
components of the aquatic environment in Washington State. Activities that would affect these resources must be
avoided to the greatest extent possible. Compensating for adverse impacts to high value aquatic resources is
typically difficult, prohibitively expensive, and may not be possible in some landscape settings.
Individual 401 review is required for activities in or affecting the following aquatic resources (and not prohibited by
Regional Condition 1), except for:
NWP 20 — Oil Spill Cleanup
NWP 32 — Completed Enforcement Actions
NWP 38 — Cleanup of Hazardous Waste
NWP 47 — Pipeline Safety Program Repair
(a) Wetlands with special characteristics (as defined in the Washington State Wetland Rating Systems for
western and eastern Washington, Ecology Publication #s04-06-025 and #04-06-015):
• estuarine wetlands
• Natural Heritage wetlands
• Bogs
• old -growth and mature forested wetlands
• wetlands in coastal lagoons
• interdunal wetlands
• vernal pools
• alkali wetlands
(b) Bog -like wetlands, aspen -dominated wetlands, camas prairie wetlands, and marine water with eelgrass beds
(except for NWP 48).
(c) Category I wetlands
(d) Category II wetlands with a habitat score >29 points.
5. Mitigation. 401 Certification is based on adequate compensatory mitigation being provided for wetland and other
water quality -related impacts of projects or activities authorized under the NWP Program.
Mitigation plans submitted for Ecology review and approval shall be based on the guidance provided in Wetland
Mitigation in Washington State, Parts 1 and 2 (Ecology Publication #s06-06-01 la and #06-06-01 lb) and shall, at a
minimum, include the following:
(a) A description of the measures taken to avoid and minimize impacts to wetlands and other waters of the U.S.
(b) The nature of the proposed impacts (i.e., acreage of wetlands and functions lost or degraded)
(c) The rationale for the mitigation site that was selected
(d) The goals and objectives of the compensatory mitigation project
(e) How the mitigation project will be accomplished, including proposed performance standards for measuring
success and the proposed buffer widths
(f) How it will be maintained and monitored to assess progress towards goals and objectives. Monitoring will
generally be required for a minimum of five years. For forested and scrub -shrub wetlands, 10 years of monitoring
will often be necessary.
(g) How the compensatory mitigation site will be legally protected for the long-term.
Refer to Wetland Mitigation in Washington State — Part 2: Developing Mitigation Plans (Ecology Publication #06-
06-01 lb) for guidance on developing mitigation plans.
Ecology encourages the use of alternative mitigation approaches, including advance mitigation and other
programmatic approaches, such as mitigation banks and programmatic mitigation areas at the local level. If you are
interested in proposing use of an alternative mitigation approach, consult with the appropriate Ecology regional staff
person. (see httn://www.ecv.wa.gov/programs/sea/wetlands/contacts.htm)
For information on the state wetland mitigation banking program go to:
http: //www. ecv. wa.Qov/programs/sea/wetlands/mitigation/banking/index.html
6. Temporary Fills. Individual 401 review is required for any project or activity with temporary fill in wetlands or
other waters of the State for more than 90 days, unless the applicant has received written approval from Ecology.
7. Mill Creek Special Area Management Plan. This condition applies to all NWPs within the boundaries described
in the Mill Creek Special Area Management Plan (SAMP), King County, Washington, dated April 2000 (SAMP).
The boundaries of the SAMP encompass all sub -basins and tributaries drained by Algona Creek, Auburn Creek,
Bingaman Creek, Midway Creek, Mill Creek, and Mullen Slough. The area is bounded roughly on the south by 8`s
Avenue N in Algona and 4`h Street NE in Auburn, on the east and north by the Ordinary High Water Mark of the
Green River, and on the west by the plateau that parallels Interstate 5 above the Green River valley.
12
Individual 401 review is required for projects or activities authorized under the NWPs unless:
(a) The project or activity will result in fill -related impacts to only wetlands designated as developable under
Alternative #8, as shown on Figure 4-8 of the SAMP.
(b) Compensatory mitigation for such impacts is onsite and/or within the areas designated on Figure 3-3,
"Maximum Areas for Restoration by Target Habitat Type," in the SAMP Aquatic Resources Restoration Plan (April
2000).
(c) Mitigation plans comply with the requirements of the SAMP and, in general, with the guidance in the
interagency Wetland Mitigation in Washington State (March 2006; Ecology publications #06-06-01 la and #06-06-
011b). Note: You can download the SAMP and Aquatic Resources Restoration Plan at
hi(p://www.nws.usace.army.mil/PublicMenulMenu.cfn?sitename=REG&pa.eename=Mill Creek SAMP.
8. State Certification for PCNs not receiving 45-day response. In the event the U.S. Army Corps of Engineers does
not respond to a complete pre -construction notification within 45 days, the applicant must contact Ecology for
Individual 401 review.
F. State 401 Certification Specific Conditions for this NWP
Certified subject to conditions. Individual 401 review required for projects or activities authorized under this NWP
if:
1. The entire utility line project or activity impacts more than''/2 acre of wetlands.
NOTE: Applicants must also apply for and obtain coverage under Ecology's Construction Stormwater General
Permit for all utility line construction projects which disturb cumulatively one acre or more.
G. EPA 401 Certification General Conditions
In order for any NWP authorization to be valid in Washington State, permittees must comply with all applicable 401
Certification general conditions. EPA 401 Certification general conditions apply to all NWP authorizations involving
Section 404 activities on Native American Indian Tribal lands (excluding the tribal lands of the Chehalis Tribes, Port
Gamble S'Klallum Tribe, Kalispel Tribe, Makah Indian Tribe, Puyallup Tribe, Spokane Tribe, and Tulalip Tribe) and
Federal land with exclusive jurisdiction within Washington State.
A. Special Aquatic Sites. Any activities in the following types of wetlands and waters of the U.S. will need to apply
for an individual 401 certification: Mature forested wetlands; bogs; bog -like wetlands; wetlands in dunal systems
along the Washington coast; vernal pools; aspen -dominated wetlands; alkali wetlands; camas prairie wetlands; salt
marshes; or marine water with eelgrass beds.
B. Soil Erosion and Sediment Controls. An individual 401 certification is based on the project or activity meeting
established turbidity levels. EPA will be using as guidance the state of Washington's water quality standards [WAC
173-201a] and sediment quality standards [WAC 173-204]. Projects or activities that are expected to exceed these
levels or that do exceed these levels will require an individual 401 certification.
C. Compliance with Stormwater Provisions. Individual 401 certification is required for projects or activities not
designed in accordance with Ecology's most recent stormwater manual or Ecology approved equivalent manual.
D. Compliance with requirements of the National Pollutant Discharge Elimination System. For projects and
activities requiring coverage under an NPDES permit, certification is based on compliance with the requirements of
that permit. Projects and activities not in compliance with NPDES requirements will require individual 401
certification.
E. Proiects or Activities Discharging to Impaired Waters. Individual 401 certification is required for projects or
activities authorized under NWPs if the project will discharge to a waterbody on the list of impaired waterbodies
13
(the 303(d) List) and the discharge may result in further exceedence of a specific parameter the waterbody is listed
for.
EPA may issue 401 certification for projects or activities that would result in further exceedence or impairment if
mitigation is provided that would result in a net decrease in listed contaminants or less impairment in the waterbody.
This determination would be made during individual 401 certification review.
F. Notification. For projects requiring individual 401 certification, applicants must provide EPA with the same
documentation provided to the Corps (as described in Corps National General Condition 27, Pre -Construction
Notification), including, when applicable:
(a) A description of the project, including site plans, project purpose, direct and indirect adverse environmental
effects the project would cause, any other U.S. Department of the Army permits used or intended to be used to
authorize any part of the proposed project or any related activity.
(b) Delineation of special aquatic sites and other waters of the United States. Wetland delineations must be
prepared in accordance with the current method required by the Corps.
(c) A statement describing how the mitigation requirement will be satisfied. A conceptual or detailed
mitigation or restoration plan may be submitted.
(d) Other applicable requirements of Corps National General Condition 27, Corps Regional Conditions, or
notification conditions of the applicable NWP.
A request for individual 401 review is not complete until EPA receives the applicable documents noted above and
EPA has received a copy of the final authorization letter from the Corps providing coverage for a proposed project
or activity under the NWP Program.
G. Mitigation. An individual 401 certification is based on adequate compensatory mitigation being provided for
wetland and other water quality -related impacts of projects or activities authorized under the NWP Program.
Mitigation plans submitted shall be based on the Joint Agency guidance provided in Wetland Mitigation in
Washington State, Parts 1 and 2 (Ecology Publication #06-06-01 la and #06-06-01 lb) and shall, at a minimum,
include the following:
1. A description of the measures taken to avoid and minimize impacts to wetlands and other waters of the U.S.
2. The nature of the proposed impacts (i.e., acreage of wetlands and functions lost or degraded).
3. The rationale for the mitigation site that was selected.
4. The goals and objectives of the compensatory mitigation project.
5. How the mitigation project will be accomplished, including proposed performance standards for measuring
success and the proposed buffer widths.
6. How it will be maintained and monitored to assess progress towards goals and objectives. Monitoring will
generally be required for a minimum of five years. For forested and scrub -shrub wetlands, 10 years of monitoring
will often be necessary.
7. How the compensatory mitigation site will be legally protected for the long-term.
H. Tempora y Fills. An individual 401 certification is required for any activity where temporary fill will remain in
wetlands or other waterbodies for more than 90 days. The 90 day period begins when filling activity starts in the
wetland or other waterbody.
H. EPA 401 Certification Specific Conditions for this NWP
Partially denied without prejudice. Individual 401 certification required for projects authorized under this NWP if:
1. There are any permanent access roads, temporary structures or fill associated with the Utility Line activity,
or
14
2. The entire scope of the project is greater than % acre of impacts to wetlands
I. Spokane Tribe of Indians 401 Certification General Conditions
Specific to the Reservation and the Tribal Water Quality Standards, the applicant must comply with the following
when there could be a discharge to waters of the Spokane Indian Reservation:
1. The applicant shall be responsible for achieving compliance with the Spokane Tribal Water Quality
Standards.
2. The applicant shall submit copies of applications materials to the Spokane Tribal Water Control Board for
review and approval at the same time they are submitted to Army Corps of Engineers and prior to any disturbance
activities.
3. The applicant shall comply with all Spokane Tribal Integrated Resource Management Plan (IRMP)
guidelines for land use activities and disturbances.
4. The applicant shall allow the Tribal Water Control board and Interdisciplinary Team to inspect the area in
question and adopt recommendations made throughout its operation.
5. Monitoring of the discharge shall occur at a level indicated by EPA and the Tribe, are subject to change, and
shall be submitted to both entities.
J. Tribal 401 Certification Specific Conditions for this NWP
Denied without prejudice by the Chehalis, Kalispel, Makah, Port Gamble S'Klallum, Puyallup, and Tulalip tribes.
Certified subject to general conditions by the Spokane Tribe.
K. CZM Consistency Response Specific Conditions for this NWP
Concur, subject to the following condition:
1. Where individual 401 review is triggered, an individual CZM Consistency Response must be obtained for
projects located within the 15 coastal counties. A "Certification of Consistency" form must be submitted in
accordance with State General Condition 3 (Notification).
L. ADDITIONAL LIMITATIONS ON THE USE OF NWPs
1. District Engineers have authority to determine if an activity complies with the terms and conditions of an NWP.
2. NWPs do not obviate the need to obtain other Federal, state, or local permits, approvals, or authorizations required
by law.
3. NWPs do not grant any property rights or exclusive privileges.
4. NWPs do not authorize any injury to the property or rights of others.
5. NWPs do not authorize interference with any existing or proposed Federal project.
15
PRELIMINARY JURISDICTIONAL DETERMINATION FORM
BACKGROUND INFORMATION
A. REPORT COMPLETION DATE FOR PRELIMINARY JURISDICTIONAL DETERMINATION (JD):
B. NAME AND ADDRESS OF PERSON REQUESTING PRELIMINARY JD:
Dave Christensen. City of Renton Public Works
C. DISTRICT OFFICE, FILE NAME, AND NUMBER: Seattle District, NWS-211-967
D. PROJECT LOCATION(S) AND BACKGROUND INFORMATION:
State: WA County: King City: Renton
Center coordinates of site (lat/long in degree decimal format): Lat. 47.48096°N, Long.-122.14273°W
Name of nearest waterbody:
Name of any water bodies on the site, in the review area, that have been identified as Section 10 waters:
Tidal:
Non -Tidal:
Identify (estimate) amount of waters in the review area (if there are multiple sites, use the table instead):
Non -wetland waters (total for site): linear feet 700 and width (ft)10 or acres.
Stream Flow: RPW Flow path: SE
Wetlands: acres (total for site).
Cowardin Class(es):
Site
number
Latitude
Longitude
Cowardin
Class
Estimated amount of aquatic
resource in review area
Class of aquatic resource
REVIEW PERFORMED FOR SITE EVALUATION (CHECK ALL THAT APPLY):
0 Office (Desk) Determination. Date: 12/19/2011
❑ Field Determination. Date(s):
SUPPORTING DATA. Data reviewed for preliminary JD (check all that apply - checked items should be included in case file and, where checked and
requested, appropriately reference sources below):
0 Maps, plans, plots or plat submitted by or on behalf of the applicant/consultant: dated July 2011.
❑ Data sheets prepared/submitted by or on behalf of the applicant/consultant.
❑ Office concurs with data sheets/delineation report.
❑ Office does not concur with data sheets/delineation report. Explain:
❑ Data sheets prepared by the Corps:
❑ Corps navigable waters' study:
❑ U.S. Geological Survey Hydrologic Atlas:
❑ USGS NHD data. ❑ USGS 8 and 12 digit HUC maps.
❑ U.S. Geological Survey map(s). Cite scale & quad name:
❑ USDA Natural Resources Conservation Service Soil Survey. Citation:
❑ National wetlands inventory map(s). Cite name:
❑ State/Local wetland inventory map(s):
❑ FEMA/FIRM maps:
❑ 100-year Floodplain Elevation is: (National Geodetic Vertical Datum of 1929)
❑ Photographs: ❑ Aerial (Name & Date):
❑ Photographs: ❑ Other (Name & Date):
❑ Previous determination(s). File no., date (and findings) of response letter (determination and coordination):
❑ Other information (please specify):
1. The Corps of Engineers believes that there may be jurisdictional waters of the United States on the subject site, and the permit applicant or other affected
party who requested this preliminary JD is hereby advised of his or her option to request and obtain an approved jurisdictional determination (JD) for that site.
Nevertheless, the permit applicant or other person who requested this preliminary JD has declined to exercise the option to obtain an approved JD in this
instance and at this time.
2. In any circumstance where a permit applicant obtains an individual permit, or a Nationwide General Permit (NWP) or other general permit verification
requiring "pre -construction notification" (PCN), or requests verification for a non -reporting NWP or other'general permit, and the permit applicant has not
requested an approved JD for the activity, the permit applicant is hereby made aware of the following: (1) the permit applicant has elected to seek a permit
authorization based on a preliminary JD, which does not make an official determination of jurisdictional waters; (2) that the applicant has the option to request
an approved JD before accepting the terms and conditions of the permit authorization, and that basing a permit authorization on an approved JD could
possibly result in less compensatory mitigation being required or different special conditions; (3) that the applicant has the right to request an individual
permit rather than accepting the terms and conditions of the NWP or other general permit authorization; (4) that the applicant can accept a permit
authorization and thereby agree to comply with all the terms and conditions of that permit, including whatever mitigation requirements the Corps has
determined to be necessary; (5) that undertaking any activity in reliance upon the subject permit authorization without requesting an approved JD constitutes
the applicant's acceptance of the use of the preliminary JD, but that either form of JD will be processed as soon as is practicable; (6) accepting a permit
authorization (e.g., signing a proffered individual permit) or undertaking any activity in reliance on any form of Corps permit authorization based on a
preliminary JD constitutes agreement that all wetlands and other water bodies on the site affected in any way by that activity are jurisdictional waters of the
United States, and precludes any challenge to such jurisdiction in any administrative or judicial compliance or enforcement action, or in any administrative
appeal or in any Federal court; and (7) whether the applicant elects to use either an approved JD or a preliminary JD, that JD will be processed as soon as
is practicable. Further, an approved JD, a proffered individual permit (and all terms and conditions contained therein), or individual permit denial can be
administratively appealed pursuant to 33 C.F.R. Part 331, and that in any administrative appeal, jurisdictional issues can be raised (see 33 C.F.R.
331.5(a)(2)). If, during that administrative appeal, it becomes necessary to make an official determination whether CWA jurisdiction exists over a site, or to
provide an official delineation of jurisdictional waters on the site, the Corps will provide an approved JD to accomplish that result, as soon as is practicable.
This preliminary JD finds that there "may be"waters of the United States on the subject project site, and identifies all aquatic features on the site that could
be affected by the proposed activity, based on the information in this document.
IMPORTANT NOTE: The information recorded on this form has not necessarily been verified by the Corps and should not be relied upon for later
jurisdictional determinations.
Signat re:
Q —
*ulatoryRProje anager
Person' Requesting Preliminary JD
1S ",�,I�
Date
Date
' Permit applicant, landowner, a lease, easement or option holder, or individual with identifiable and substantial legal interest in the property; this signature is not required for
preliminary JDs associated with enforcement actions.
�pays os
CERTIFICATE .OF COMPLIANCE +
US Army Corps WITH DEPARTMENT OF THE ARMY PERMIT
of Engineers
Seattle District
Permit Number: NWS-2011-0967
Name of Permittee: Renton Public Works
Date of Issuance: R 1 52012
Upon completion of the activity authorized by this permit, please check the applicable boxes below, date
and sign this certification, and return it to the following address:
Department of the Army
U.S. Army Corps of Engineers
Seattle District, Regulatory Branch
Post Office Box 3755
Seattle, Washington 98124-3755
Please note that your permitted activity is subject to a compliance inspection by a U.S. Army Corps of
Engineers representative. If you fail to comply with the terms and conditions of your authorization, your
permit may be subject to suspension, modification, or revocation.
The work authorized by the above -referenced permit has been completed in accordance with the
❑
terms and conditions of this permit.
Date work complete:
❑ Photographs and as -built drawings of the authorized work (OPTIONAL, unless required
as a Special Condition of the permit).
If applicable, the mitigation required (e.g., construction and plantings) in the above -referenced
❑
permit has been completed in accordance with the terms and conditions of this permit (not
including future monitoring).
Date work complete:
❑ Photographs and as -built drawings of the mitigation (OPTIONAL, unless required as a
Special Condition of the permit).
Printed Name:
Signature:
Date:
City of Renton Response to Muckleshoot Tribe Comments of February 16, 2012
Comment 1: Stream Typing
We disagree with the applicant's assessment that the stream to be crossed and trenched is a Type
N water. While no fish were observed from the applicant consultant's previous assessments, it
would be expected as the responses clearly indicate that there are downstream culverted portion
of Stewart Creek is likely a fish passage barrier. No fish observations above a man-made
barrier is an inappropriate method to assess fish habitat potential. As we recommended
previously, the stream should have been classified based solely on its physical conditions
meeting the criteria in WAC 222-16-031 and the Forest Practices Board Manual 13. If we had
been consulted by the applicant, we would have provided this recommendation sooner. As noted
in the applicant's first response, they consider this portion of Stewart Creek as meeting the
physical criteria even though the actual data to demonstrate this conclusion is missing in their
response. Since the applicant has indicated that the stream meets physical criteria for presumed
fish use based on WAC 222-16-031, then we recommend that this section of Stewart Creek be
considered potential fish bearing water for purposes of project impacts and potential mitigation
measures.
Response: While we agree that the stream meets the physical criteria for presumed fish use
based on WAC 222-16-031 (3)(b)(i) (see below), our intent at the onset of this project was to
determine whether or not the stream was used by fish so that the appropriate construction
methods could be applied (trenching vs. boring under the stream). We coordinated with WDFW,
and based on our site visit with Larry Fisher from WDFW and his recommendations on how to
establish fish presence/absence and his assessment of fish access to the site from either upstream
or downstream, we determined that the appropriate classification was a Type N (non -fish
habitat). Based on site conditions, WDFW also indicated that trenching was a appropriate means
of installing the pipe. On February 21, 2012, WDFW issued a Hydraulic Project Approval for
the project as proposed by the City. The project proponent will comply fully with all conditions
set forth in the HPA, especially with regard to construction timing, methods for stream diversion
during construction, erosion protection, and restoration of the site following construction.
Comment 2: Project Impacts
With the information described above, the project needs to be reassessed for its potential
impacts. For example, boring under the stream (instead of open trenching) would likely cause
less impact to the affected portion of Stewart Creek. It should be discussed further as a means to
construct the project. Also, while the applicant's response indicates that the proposed depth of
the constructed sewer line considered potential future bed scour, there is no quantitative analysis
or data provided to indicate exactly how the depth of the sewer line was determined. We would
like to avoid a future pipe and bank maintenance project at this site which should be possible if
the pipe is constructed deep enough now. Additional information is needed to determine how the
applicant considered scour when determining the depth of the pipe to address this concern.
Similarly adding cobbles to the streambed does not match the current streambed substrate and
may not be sufficient to withstand streambed scour and pipe exposure over time. Instead a
deeper pipe and smaller sized streambed materials are likely the solution to avoid impacting the
stream now and a future maintenance project that causes additional adverse impacts to the
potential fish habitat. It should be noted that the applicant has agreed to smaller streambed
material and should provide updated drawings to support this commitment. We would like to
review the drawings when they are available.
Response: The depth of the sewer pipeline is constrained by the need to provide the correct
elevations for gravity flow of wastewater through the pipe. Minimum slopes are needed to
provide adequate cleansing velocity of wastewater through the pipe. A minimum of 5 feet of
cover over the pipe is recommended for stabilized channels according to the Department of
Ecology's Criteria for Sewage Works Design, and the design standard is in accordance with the
City's Long -Range Wastewater Management Plan. The water quality pond upstream of this
project has a flow control structure that limits the rate of flow into this section of the stream.
Based on site visit observations, the velocity in this section of the stream is less than 1 foot per
second, and with peak flows limited by the flow control structure, this velocity will not increase
substantially. However, to be conservative, a peak velocity of 3 feet per second was assumed.
According to the Hjulstrom curve, which addresses the potential for sediment erosion, transport,
and deposition, '/-inch material and larger will not be scoured out at this velocity. To address
concerns over scouring, the majority of the streambed material will not be smaller than '/-inch.
The City evaluated both boring and open cut (trenching) as an option for the stream crossing.
Early in the project, the City discussed trenching with WDFW and King County, who agreed that
trenching would be acceptable if the stream is not fish -bearing and appropriate BMPs and
restoration methods are employed. As described in the response to Comment #1, an ESA
biologist, in consultation with WDFW, evaluated the stream and determined that fish are not
present. The City therefore proceeded with trenching as the most efficient option, and has
prepared a mitigation plan to protect and restore the stream during and after construction. The
City will comply with all measures required in the HPA issued for the project.
Comment 3: Mitigation
It is not clear from the applicant's responses if they will be placing trees that are 4 inches in
diameter and greater removed for the project construction back into Stewart Creek to mitigate
for the temporal loss offuture wood recruitment. Therefore, we re -iterate our recommendation
that all trees that are 4 inches in diameter or greater that are removed from within 200 feet of
Stewart Creek as part of this project be placed back into Stewart Creek as partial mitigation for
the temporal loss of these trees. This mitigation measure is in addition to the proposed tree
.J
planting. The planted trees will take time to grow to the same diameters and heights as the
removed trees; therefore, there is a temporal loss from tree removal.
Response: The City is considering your recommendation that the trees removed from the site
that are 4 inches or more in diameter be placed in Stewart Creek. Because of the size of the
creek, the City is not certain it is advisable to place all of the trees removed during construction
in the creek. The City is also limited in woody debris placement by the narrow corridor over
which the City has jurisdiction. The stream corridor outside the 30-foot wide area at the stream
crossing is in King County's jurisdiction.
Our prior response to this comment indicated that the City would place some, but not all, of the
trees within the channel near the disturbance area and would coordinate with King County for
placement of additional trees in other accessible areas within the Park property. To that end, the
City will have a hydrologist/geomorphologist visit the site and develop a plan for potential
locations and arrangement of LWD pieces within the disturbance area and at other easily
accessible locations within the Park. The City will then use this information to coordinate with
the County and to get approval for placement of this material outside the disturbance area. Since
the project is limited to the 30-foot wide corridor, the City will not place LWD material in
locations that would cause impacts to wetlands and streams not previously assessed for impacts.
One other consideration for LWD placement is the presence of residential neighborhoods both
upstream and downstream of the project area; therefore, placement of LWD structures will be
conducted in a manner that will maintain protection of these areas from channel migration or
flooding.
While as much of the LWD as possible will be re -used on -site, it is unlikely that all of the
material will be used. The City could make any LWD not used for mitigation purposes available
to the Muckleshoot Tribe for use in other mitigation projects within the Cedar River watershed,
if so desired.
David Christensen
From: Sara Noland [SNoland@esassoc.com]
Sent: Thursday, February 16, 2012 1:44 PM
To: David Christensen; Ann Root; Steve Krueger
Cc: Lara Kammereck; Lisa Adolfson; Tyler Whitehouse
Subject: FW: East Renton Lift Station Removal, LUA11-092, ECF, CAR, NOA and NWP
NWS-2011-967 (UNCLASSIFIED)
Dave, Ann and Steve,
Please see email below from the Corps regarding additional comments from the Tribe. Steve,
are these items that you can draft responses for? Do we need more info from Carollo about
the pipe construction methods or pipe depth? How can we resolve the disagreement on the
stream type - does that need to involve the WDFW biologist?
Thanks,
Sara Noland
-----Original Message -----
From: Lull, Lori C NWS [mailto:Lori.C.Lull@usace.army.mil]
Sent: Thursday, February 16, 2012 11:56 AM
To: Sara Noland
Subject: FW: East Renton Lift Station Removal, LUA11-092,
(UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
Sarah,
ECF, CAR, NOA and NWP NWS-2011-967
I have been coordinating with the Muckleshoot Tribe regarding their comments on the East
Renton Lift Station project. I forwarded the tribe your reply that you sent us dated
December 23, 2010. They tribe had additional concerns, which are below. I do need to
address tribal concerns as part of my decision.
Also, the City's response noted that the reply says that the city will meet with the tribe,
and from what I understand, that has not been done.
Please respond. Feel free to call if you have questions.
Thanks,
Lori Lull
Lori C. Lull
Project Manager, Regulatory
US Army Corps of Engineers, Seattle District PO Box 3755, Seattle WA 98124
Ph:206-766-6438
-----Original Message -----
From: Karen Walter [mailto:KWalter@muckleshoot.nsn.us]
Sent: Thursday, February 16, 2012 11:21 AM
To: Lull, Lori C NWS
Subject: RE: East Renton Lift Station Removal, LUA11-092, ECF, CAR, NOA and NWP NWS-2011-967
Lori,
We have reviewed the applicant's responses to our December 19, 2011 comments and offer the
follow-up comments noted below:
1. Water typing.
We disagree with the applicant's assessment that the stream to be crossed and trenched is a
Type N water. While no fish were observed from the applicant consultant's previous
assessments, it would be expected as the responses clearly indicate that there are downstream
culverted portion of Stewart Creek is likely a fish passage barrier. No fish observations
above a man-made barrier is an inappropriate method to assess fish habitat potential. As we
recommended previously, the stream should have been classified based solely on its physical
conditions meeting the criteria in WAC 222-16-031 and the Forest Practices Board Manual 13.
If we had been consulted by the applicant, we would have provided this recommendation.sooner.
As noted in the applicant's first response, they consider this portion of Stewart Creek as
meeting the physical criteria even though the actual data to demonstrate this conclusion is
missing in their response. Since the applicant has indicated that the stream meets physical
criteria for presumed fish use based on WAC 222-16-031, then we recommend that this section
of Stewart Creek be considered potential fish bearing water for purposes of project impacts
and potential mitigation measures.
2. Project impacts
With the information described above, the project needs to be reassessed for its potential
impacts. For example, boring under the stream (instead of open
trenching) would likely cause less impact to the affected portion of Stewart Creek. It
should be discussed further as a means to construct the project.
Also, while the applicant's response indicates that the proposed depth of the constructed
sewer line considered potential future bed scour, there is no quantitative analysis or data
provided to indicate exactly how the depth of the sewer line was determined. We would like
to avoid a future pipe and bank maintenance project at this site which should be possible if
the pipe is constructed deep enough now. Additional information is needed to determine how
the applicant considered scour when determining the depth of the pipe to address this
concern. Similarly adding cobbles to the streambed does not match the current streambed
substrate and may not be sufficient to withstand streambed scour and pipe exposure over time.
Instead a deeper pipe and smaller sized streambed materials are likely the solution to avoid
impacting the stream now and a future maintenance project that causes additional adverse
impacts to the_ potential fish habitat. It should be noted that the applicant has agreed to
smaller streambed material and should provide updated drawings to support this commitment. We
would like to review the drawings when they are available.
3. Mitigation
2
It is not clear from the applicant's responses if they will be placing trees that are 4
inches in diameter and greater removed for the project construction back into Stewart Creek
to mitigate for the temporal loss of future wood recruitment. Therefore, we re -iterate our
recommendation that all trees that are 4 inches in diameter or greater that are removed from
within 200 feet of Stewart Creek as part of this project be placed back into Stewart Creek as
partial mitigation for the temporal loss of these trees.
This mitigation measure is in addition to the proposed tree planting.
The
planted trees will take time to grow to the same diameters and heights as the removed trees;
therefore, there is a temporal loss from tree removal.
Please let me know if you have any questions.
Thank you,
Karen Walter
Watersheds and Land Use Team Leader
Muckleshoot Indian Tribe Fisheries Division
39015 172nd Ave SE
Auburn, WA 98092
253-876-3116
Karen Walter
Watersheds and Land Use Team Leader
Muckleshoot Indian Tribe Fisheries Division
39015 172nd Ave SE
3
Auburn, WA 98092
253-876-3116
-----Original Message -----
From: Lull, Lori C.NWS [mailto:Lori.C.Lull@usace.army.mil]
Sent: Wednesday, February 15, 2012 9:51 AM
To: Karen Walter
Subject: FW: East Renton Lift Station Removal, LUA11-092, ECF, CAR, Notice of Application and
Proposed Determination of Non -Significance
(UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
Karen,
Attached are responses from the applicant to your comments that you sent me on 12/19. Sorry
for the delayed follow up on my part. Have your comments been sufficiently addressed?
Thanks,
Lori
Rocale,
We have reviewed the Notice of Application for the above referenced project and offer the
following comments in the interest of protecting and restoring the Tribe's treaty protected
fisheries resources:
0
1. Water Typing
Per the Wetland, Stream, and Wildlife Study (ESA 2011), there are two streams on -site:
Stewart Creek and a tributary to Stewart Creek.
Stewart
Creek is a tributary to the Cedar River. The Study classifies both
streams
as Type N waters. We disagree. Both streams appear to meet the physical criteria for
presumed fish use and fish habitat based on WAC 222-16-031, as both streams are at least 2
feet in bankfull width per the study and appear to be less than 16% stream gradient based on
the site plans. Stewart Creek is identified with an average channel width of 5 feet and
portions as wide as
15 feet. The unnamed Stewart Creek tributary is identified as being three feet in width.
Therefore, at least the bankfull width criterion is met for both streams. We are unaware of
any natural barriers downstream that would constitute a fish passage barrier. Previously,
King County DOT removed a known fish passage barrier culvert downstream on Stewart Creek as
part of the Elliott Bridge replacement project (see
http://community.seattletimes.nwsource.com/archive/?date=20050901&slug=g
lance
Ole) which should have resulted in improved upstream passage in Stewart Creek. If there are
other existing human created barriers downstream of the Park and above King County's previous
work, then they can and should be replaced and not be used to determine potential fish
habitat accordingly.
Finally, the minnow traps and visual observations on two days described in the Study are too
limited to confirm fish absence. We generally recommend that such studies be completed over
10 years to capture a variety of hydrology and rainfall events to document fish absence.
There can be a variety of reasons why fish are not present when examined in single
observations. As a surrogate for 10 years of monitoring data, we recommend that the physical
criteria from WAC 222-16-031 be used along with the Forest Practices Board Manual 13 to
determine potential fish habitat, unless there is a documented natural barrier confirmed by
the MITFD and WDFW. There was substantial fish electroshocking data used in combination with
stream measurements to create the criteria used in the WAC 222-16-031. The photos in the
Study indicate features similar to other streams where we have found coho and cutthroat
trout. Even seasonal streams can provide habitat for coho and other salmonids when they are
flowing. Please see attached paper.
2. Project Impacts
5
Since the impacted streams appear to be capable of providing fish habitat, then the potential
project impacts may not have been adequately assessed.
For example, the extent of riparian impacts may not be accurate if a larger regulated stream
buffer is required based on a Type F classification.
It
appears that the Category II wetland buffer may encompass the larger regulated stream buffer
for Type F waters; however, this should be verified.
Also, the proposal to use open trenching techniques would not be the preferred stream
crossing if these are potential fish bearing streams.
Rather, horizontal directional drilling or other techniques with less impacts to the streams
would be assessed and implemented if technically feasible.
Another consideration is the depth of the sewer line at the stream crossings (minimum 5 feet)
may not be sufficient to protect the pipeline over time if the stream conditions change as a
result of changes in upstream hydrology, debris flows, etc. The pipe may need to be located
deeper to avoid its exposure over time that causes future bank and bed stabilization that
generally results in adverse impacts to fish habitat, all of which can be avoided if located
at the proper depth now.
3. Project mitigation
We recommend that all native trees that are 4 inches in diameter (at breast
height) and greater and proposed to be removed from within 200 feet of the project streams,
be placed back into the streams as partial mitigation for their removal. The tree
replacement ratio of 3:1 will not address the temporal loss of tree growth and future wood
recruitment from the removal of
these trees. Per the environmental checklist, 31 trees that measure up
to
26 inches DBH will be removed as part of this project. It is unclear how many of these trees
are within 200 feet of the affected streams and at least
4
inches in diameter that will be removed. The mitigation area also needs to verify that the
existing trails are not included in the mitigation ratios as these trails are proposed to be
restored and would not be replanted as stream
or wetland buffer. The stream buffers will also be further impacted by
6
the
pipeline and its requirement to plant only native shrubs within 20 feet of the 30 foot wide
construction corridor to avoid tree root damage to the pipe.
Additional mitigation will likely be needed to address this permanent impact.
Finally, stream bed materials placed back in the affected streams should be similar to what
is found currently, i.e. sands and gravel per the Study.
The
proposed cobbles, for example, may be too large of substrate, whereas gravel sized material
and smaller will likely be more suitable.
We appreciate the opportunity to review this project and look forward to the City's
responses. Please note that the project is seeking a Hydraulic Project Approval permit and a
Corps of Engineers 404 permit, at this time as well; therefore, we are also submitting these
comments in response to those pending permits.
Please let me know if you have any questions.
Thank you,
Karen Walter
Watersheds and Land Use Team Leader
7
Muckleshoot Indian Tribe Fisheries Division
39015 172nd Ave SE
Auburn, WA 98092
253-876-3116
Classification: UNCLASSIFIED
Caveats: NONE
Classification: UNCLASSIFIED
Caveats: NONE
Classification: UNCLASSIFIED
Caveats: NONE
8
Classification: UNCLASSIFIED
Caveats: NONE
David Christensen
From: Sara Noland [SNoland@esassoc.com]
Sent: Monday, December 19, 2011 11:25 AM
To: Lisa Adolfson; Steve Krueger
Cc: Lara Kammereck; Tyler Whitehouse; David Christensen
Subject: FW: East Renton Lift Station Removal, LUA11-092, ECF, CAR, Notice of Application and
Proposed Determination of Non -Significance (UNCLASSIFIED)
Attachments: coho and intermittent streams.pdf
Lisa and Steve,
Looks like we need to provide a response to the Muckleshoot comments.
Steve, do you usually write a letter or how is this typically done?
Thanks,
Sara
-----Original Message -----
From: Lull, Lori C NWS [mailto:Lori.C.Lull@usace.army.mil]
Sent: Monday, December 19, 2011 10:36 AM
To: Sara Noland
Cc: Dchristen@Rentonwa.gov
Subject: FW: East Renton Lift Station Removal, LUA11-092,
Proposed Determination of Non -Significance
(UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
Dear Ms. Noland,
ECF, CAR, Notice of Application and
We also received the following comments from the Muckleshoot tribe.
Please provide a response within 30 days or the application will be cancelled.
Thanks,
Lori Lull
Lori C. Lull
Project Manager, Regulatory Program
US Army Corps of Engineers, Seattle District PO Box 3755 Seattle, WA
98124
206-766-6438
206-764-6602 fax
-----Original Message -----
From: Karen Walter [mailto:KWalter@muckleshoot.nsn.us]
Sent: Monday, December 19, 2011 10:29 AM
To: Rocale Timmons.
Cc: Fisher, Larry D (DFW); Lull, Lori C NWS
1
Subject: East Renton Lift Station Removal, LUA11-092, ECF, CAR, Notice of Application and
Proposed Determination of Non -Significance
Rocale,
We have reviewed the Notice of Application for the above referenced project and offer the
following comments in the interest of protecting and restoring the Tribe's treaty protected
fisheries resources:
1. Water Typing
Per the Wetland, Stream, and Wildlife Study (ESA 2011), there are two streams on -site:
Stewart Creek and a tributary to Stewart Creek.
Stewart
Creek is a tributary to the Cedar River. The Study classifies both
streams
as Type N waters. We disagree. Both streams appear to meet the physical criteria for
presumed fish use and fish habitat based on WAC 222-16-031, as both streams are at least 2
feet in bankfull width per the study and appear to be less than 16% stream gradient based on
the site plans. Stewart Creek is identified with an average channel width of 5 feet and
portions as wide as
15 feet. The unnamed Stewart Creek tributary is identified as being three feet in width.
Therefore, at least the bankfull width criterion is met for both streams. We are unaware of
any natural barriers downstream that would constitute a fish passage barrier. Previously,
King County DOT removed a known fish passage barrier culvert downstream on Stewart Creek as
part of the Elliott Bridge replacement project (see
http://community.seattletimes.nwsource.com/archive/?date=20050901&slug=g
lance
0le) which should have resulted in improved upstream passage in Stewart Creek. If there are
other existing human created barriers downstream of the Park and above King County's previous
work, then they can and should be replaced and not be used to determine potential fish
habitat accordingly.
Finally, the minnow traps and visual observations on two days described in the Study are too
limited to confirm fish absence. We generally recommend that such studies be completed over
10 years to capture a variety of hydrology and rainfall events to document fish absence.
There can be a variety of reasons why fish are not present when examined in single
observations. As a surrogate for 10 years of monitoring data, we recommend that the physical
criteria from WAC 222-16-031 be used along with the Forest Practices Board Manual 13 to
determine potential fish habitat, unless there is a documented natural barrier confirmed by
the MITFD and WDFW. There was substantial fish electroshocking data used in combination with
stream measurements to create the criteria used in the WAC 222-16-031. The photos in the
Study indicate features similar to other streams where we have found coho and cutthroat
trout.
Even seasonal streams can provide habitat for coho and other salmonids when they are flowing.
Please see attached paper.
2. Project Impacts
Since the impacted streams appear to be capable of providing fish habitat, then the potential
project impacts may not have been adequately assessed.
For example, the extent of riparian impacts may not be accurate if a larger regulated stream
buffer is required based on a Type F classification. It appears that the Category II
4
wetland buffer may encompass the larger regulated stream buffer for Type F waters; however,
this should be verified.
Also, the proposal to use open trenching techniques would not be the preferred stream
crossing if these are potential fish bearing streams.
Rather, horizontal directional drilling or other techniques with less impacts to the streams
would be assessed and implemented if technically feasible.
Another consideration is the depth of the sewer line at the stream crossings (minimum 5 feet)
may not be sufficient to protect the pipeline over time if the stream conditions change as a
result of changes in upstream hydrology, debris flows, etc. The pipe may need to be located
deeper to avoid its exposure over time that causes future bank and bed stabilization that
generally results in adverse impacts to fish habitat, all of which can be avoided if located
at the proper depth now.
3. Project mitigation
We recommend that all native trees that are 4 inches in diameter (at breast
height) and greater and proposed to be removed from within 200 feet of the project streams,
be placed back into the streams as partial mitigation for their removal. The tree
replacement ratio of 3:1 will not address the temporal loss of tree growth and future wood
recruitment from the removal of
these trees. Per the environmental checklist, 31 trees that measure up
to
26 inches DBH will be removed as part of this project. It is unclear how many of these trees
are within 200 feet of the affected streams and at least 4 inches in diameter that will be
removed. The mitigation area also needs to verify that the existing trails are not included
in the mitigation ratios as these trails are proposed to be restored and would not be
replanted as stream
or wetland buffer. The stream buffers will also be further impacted by
the
pipeline and its requirement to plant only native shrubs within 20 feet of the 30 foot wide
construction corridor to avoid tree root damage to the pipe.
Additional mitigation will likely be needed to address this permanent impact.
Finally, stream bed materials placed back in the affected streams should be similar to what
is found currently, i.e. sands and gravel per the Study. The proposed cobbles, for example,
may be too large of substrate, whereas gravel
sized material and smaller will likely be more suitable.
We appreciate the opportunity to review this project and look forward to the City's
responses. Please note that the project is seeking a Hydraulic Project Approval permit and a
Corps of Engineers 404 permit, at this time as well; therefore, we are also submitting these
comments in response to those pending permits.
Please let me know if you have any questions.
Thank you,
Karen Walter
9
Watersheds and Land Use Team Leader
Muckleshoot Indian Tribe Fisheries Division
39015 172nd Ave SE
Auburn, WA 98092
253-876-3116
Classification: UNCLASSIFIED
Caveats: NONE
4
David Christensen
From: Steve Krueger [SKrueger@esassoc.com]
Sent: Tuesday, December 20, 2011 3:00 PM
To: David Christensen
Cc: Lisa Adolfson; Ann Root; Sara Noland; LKammereck@carollo.com;
TWhitehouse@carollo.com
Subject: RE: East Renton Lift Station Removal, LUA11-092, ECF, CAR, Notice of Application and
Proposed Determination of Non -Significance (UNCLASSIFIED)
Attachments: Response to Muckleshoot Tribe Comments on East Renton Lift Station Removal.docx
Dave,
Attached you will find a draft comment response addressing comments made by the Muckleshoot Tribe.
I don't think it is likely that the Tribe would appeal the SEPA determination because it is unlikely to change the SEPA
decision. There is a higher probability, although I think the risk is still relatively low, that the Tribe could appeal the state
and federal permits because, in their opinion, not enough mitigation is being provided. Overall, I think the City could
accommodate some of the items requested as mitigation, but maybe not to the scale the Tribe envisions. For example, I
think the substrate covering the excavation could be changed from a course cobble to a spawning gravel mix with no risk
of scour damage to the pipeline. There is also the issue that any mitigation outside the City's 30-foot wide corridor
would require additional coordination with King County who may or may not allow the mitigation to occur on their
property.
With respect to the cultural resource survey the Corps is requesting, if the City has an on -call for archaeological and
cultural resource firms, they should probably pursue that avenue to get the cultural resource survey completed. It is not
currently in our contract to perform this additional work, but we could sub out the work to a firm we generally work
with and amend our existing contract or the firm could be a sub to Carollo directly. It is my understanding that the City
now has an on -call for this type of work. Given that this is typically a slow time of year for field work, I would anticipate
that any firm selected could get the work done fairly quickly. The cost for a site this size would be fairly cheap in the
$2,000-3,000 ballpark.
I know your under the gun here Dave, so let us know if there is anything else we can do to get this resolved.
Thanks,
Steven Krueger
Senior Fisheries Biologist
ESA I Northwest Etiological Resources
5300 Shilshole, Avenue MN, Suite 200
Seattle, WA 98*107
206.789-96 58 1 206. ; 89-968d fax
skrueger(o)esassoc.com
Response to Muckleshoot Tribe Comments on East Renton Lift Station Removal, LUA11-092,ECF,CAR,
Notice of Applications and Proposed Determination of Non -Significance.
Comment 1: Water Typing
Per the Wetland, Stream, and Wildlife Study (ESA 2011), there are two streams on -site: Stewart Creek
and a tributary to Stewart Creek. Stewart Creek is a tributary to the Cedar River. The Study classifies
both streams as Type N waters. We disagree. Both streams appear to meet the physical criteria for
presumed fish use and fish habitat based on WAC 222-16-031, as both streams are at least 2 feet in
bankfull width per the study and appear to be less than 16% stream gradient based on the site plans.
Stewart Creek is identified with an average channel width of 5 feet and portions as wide as 15 feet. The
unnamed Stewart Creek tributary is identified as being three feet in width. Therefore, at least the
bankfull width criterion is met for both streams. We are unaware of any natural barriers downstream
that would constitute a fish passage barrier. Previously, King County DOT removed a known fish passage
barrier culvert downstream on Stewart Creek as part of the Elliott Bridge replacement project
(http://community.seattletimes.nwsource.com/archive/?date=20050901&slug=glanceOle) which
should have resulted in improved upstream passage in, Stewart Creek. If there are other existing human
created barriers downstream of the Park and above King County's previous work, then they can and
should be replaced and not be used to determine potential fish habitat accordingly.
Finally, the minnow traps and visual observations on two days described in the Study are too limited to
confirm fish absence. We generally recommend that such studies be completed over 10 years to
capture a variety of hydrology and rainfall events to document fish absence. There can be a variety of
reasons why fish are not present when examined in single observations. As a surrogate for 10 years of
monitoring data, we recommend that the physical criteria from WAC 222-16-031 be used along with the
Forest Practices Board Manual 13 to determine potential fish habitat, unless there is a documented
natural barrier confirmed by the MITFD and WDFW. There was substantial fish electroshocking data
used inscombination with stream measurements to create the criteria used in the WAC 222-16-031. The
photos in the Study indicate features similar to other streams where we have found coho and cutthroat
trout. Even seasonal streams can provide habitat for coho and other salmonids when they are flowing.
Please see attached paper.
Response: We agree that the stream does meet the physical criteria for presumed fish use and fish
habitat based on WAC 22-016-031. We initially questioned whether or not fish could access this reach
due to the extensive portion of the stream that is culverted beneath residential developments south and
downstream of the park and the presence of piped segments and stormwater facilities upstream of the
park. Therefore, to assist the County in applying the appropriate stream classification for the stream and
to assist with development of construction methods, a scientific collection permit (SCP) was obtained
from WDFW to conduct an electrofishing study to determine fish presence/absence within that portion
of Stewart Creek that flows through Maplewood Park. Upon receipt of the SCP, ESA contacted Larry
Fisher, a local area habitat biologist with WDFW, to set up a site visit prior to performing any
electrofishing. ESA fisheries biologist Steven Krueger and wetland scientist Sara Noland, City staff, and a
Carollo engineer met with Larry Fisher on -site on March 23, 2011. Based on existing site conditions and
follow on review of site plans, Mr. Fisher indicated that electrofishing would not be necessary and
instead suggested making visual observations and installing baited minnow traps to assess fish use of
Stewart Creek within Maplewood Park. During the site visit we also looked at the downstream culverted
portion of Stewart Creek and Larry Fisher indicated that this was a likely barrier to fish migration.
ESA fish biologist Steve Krueger installed two baited minnow traps on March 29, 2011, one located
upstream near the proposed crossing and one located at the downstream end of Maplewood Park. Mr.
Krueger also performed visual observations by walking the entire stream length within the Park using
polarized glasses on the same day. Mr. Krueger returned to the site on March 31, 2011 to inspect and
remove the traps and perform additional observations of the stream by walking the entire length again.
Upon inspection of the traps, no fish were observed. One small salamander and two aquatic
invertebrates were collected and released unharmed. No fish, particularly salmonids, were observed
during visual observations conducted along the entire stream length within Maplewood Park. It is
assumed that the downstream piped segment in conjunction with steep grades through the ravine may
prevent salmonid access to the project area. The results of the field investigation were forwarded to
Larry Fisher on March 31, 2011. Larry replied on April 1, 2011 that WDFW would allow for open cut
excavation through the channel provided that the streambed and vegetation disturbed during
construction would be restored.
While the downstream fish passage barrier near Elliott Bridge may have been removed, this does not
necessarily mean that salmonids can access the stream channel within the park. The piped segment
beneath the residential development south of the park is also most likely a fish passage barrier,
although this has not been formally identified as a barrier by either WDFW or the Muckleshoot Tribe.
The issue isn't that the stream does not meet the physical criteria for presumed fish use, but whether or
not fish can actually access the site due to downstream barriers. We have concluded based on the use of
baited minnow traps, observations along the entire reach, and presence of a significant segment of
piped channel, that fish are not present. While ten years of monitoring would be valuable to support this
conclusion, this is not feasible given the current needs of the City of Renton. Therefore, our prior
assessment that the stream should be classified as a non -fish bearing stream (Type N) stands.
—� /��'v�i i�;��c� /lt.T;���� ict/ �.�-F-,� /v - /.���.—�f�:•r-i�,!!�L /l�,['a�%
Comment 2: Project Impacts ;44
Since the impacted streams appear to be capable of providing fish habitat, then the potential project
impacts may not have been adequately assessed. For example, the extent of riparian impacts may not
be accurate if a larger regulated stream buffer is required based on a Type F classification. It appears
that the Category II wetland buffer may encompass the larger regulated stream buffer for Type F waters;
however, this should be verified. Also, the proposal to use open trenching techniques would not be the
preferred stream crossing if these are potential fish bearing streams. Rather, horizontal directional
drilling or other techniques with less impact to the streams would be assessed and implemented if
technically feasible. Another consideration is the depth of the sewer line at the stream crossings
(minimum 5 feet) may not be sufficient to protect the pipeline over time if the stream conditions change
as a result of changes in upstream hydrology, debris flows, etc. The pipe may need to be located deeper
to avoid its exposure over time that causes future bank and bed stabilization that generally results in
adverse impacts to fish habitat, all of which can be avoided if located at the proper depth now.
Response: The method for the determining fish presence/absence was coordinated with WDFW and
open trench excavation was allowed provided that the channel was restored in the excavation area and
that vegetation was restored. Basically, WDFW was in agreement that this segment of Stewart Creek
was non -fish bearing and therefore they agreed that open trench excavation could be allowed. The
depth of the sewer line was taken into consideration as there is always the potential for bed scour. The
topography in this is relatively flat with good floodplain connectivity. Excessive flows, if they were to
occur, would spread out laterally; thus ameliorating the scour potential. In addition, upstream portions
of the stream are primarily piped conveyances with the stream being located within a detention pond
immediately upstream of the park. Therefore, due to the highly developed nature of the headwaters
and the fact that there are piped segments and detention ponds are present, the potential for "debris"
flows seems extremely unlikely. To further reduce the potential for bed scour, a courser material
ODiv (cobble) was selected as backfill over the pipeline.
7-1,1A7_1eA1 In
Comment 3: Project mitigation
We recommend that all native trees that are 4 inches in diameter (at breast height) and greater and
proposed to be removed from within 200 feet of the project streams, be placed back into the streams as
partial mitigation for their removal. The tree replacement ratio of 3:1 will not address the temporal loss
of tree growth and future wood recruitment from the removal of these trees. Per the environmental
checklist, 31 trees that measure up to 26 inches DBH will be removed as part of this project. It is unclear
how many of these trees are within 200 feet of the affected streams and at least 4 inches in diameter
that will be removed. The mitigation area also needs to verify that the existing trails are not included in
the mitigation ratios as these trails are proposed to be restored and would not be replanted as stream
or wetland buffer. The stream buffers will also be further impacted by the pipeline and its requirement
to plant only native shrubs within 20 feet of the 30 foot wide construction corridor to avoid tree root
damage to the pipe. Additional mitigation will likely be needed to address this permanent impact.
Response: Mitigation for tree removal and the temporal loss of stream function due to tree removal will
be further assessed through other state and federal permit application processes (Corps 404/WDFW
HPA). The City could pursue the placement of a portion of the trees to be removed within the channel
near the disturbance area and in other areas easily accessible by existing trails. However, the City only
has control over the 30-foot wide pipeline corridor through the park and any mitigation outside this
would require additional coordination with King County Parks, who may or may not be supportive of a
placing LWD within the stream outside the 30-foot corridor. The tree replacement ratio identified (3:1)
in combination with using felled trees to supplement stream habitat would provide adequate mitigation
for the tree removal and temporal impacts associated with the loss of cover, shade, and LWD
recruitment potential. Placement of large felled trees within the stream channel would be limited to the
disturbance area to minimize stream impacts where none were previously identified. Since the
disturbance area is limited to the 30-foot wide corridor under the control of the City, the placement of
31 pieces of LWD within this reach would be more than necessary. It should also be noted that given the
location of the project between two residential developments, LWD placement, if any, should be
carefully conducted to ensure LWD does not result in upstream or downstream property damage due to
backwatering or channel migration. A hydrologist/geomorphologist should be consulted prior to
development of any plans for including LWD in the channel. The City would also need to consider
whether root wads remain attached or not, as there is a substantial cost difference between just cutting
a tree down and removing the tree with the root wad attached.
The stream bed materials specified (cobble) could be replaced with a finer material such as a general
spawning gravel mixture with a higher content of large gravel (e.g. WSDOT spec material). The steel
casing proposed for the PVC pipeline should be sufficient to withstand scour with or without cobble;
however, cobble would afford a higher level of protection. Bed scour is not a real concern in this area
due to the relatively flat gradient and the fact that the majority of the streambed is a depositional area
for fines.
1X)/ �10
David Christensen
From: Sara Noland [SNoland@esassoc.com]
Sent: Friday, December 16, 2011 1:42 PM
To: Lisa Adolfson; Tyler Whitehouse; Lara Kammereck; David Christensen
Subject: FW: East Renton Lift Station JARPA (UNCLASSIFIED)
Hi,
Here is a message from the Corps reviewer for the East Renton Lift Station Elimination
project. Wanted to forward this in case you ever need her contact info.
- Sara Noland
-----Original Message -----
From: Lull, Lori C NWS fmailto:Lori.C.Lull(@usace.army.mill
Sent: Monday, December 12, 2011 1:37 PM
To: Sara Noland
Subject: RE: East Renton Lift Station JARPA (UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
Got your message today (I was out Friday afternoon).
Yes, we have it. Its assigned # NWS-2011-967. Review is not yet completed, but I'll be your
project manager.
Lori C. Lull
Project Manager, Regulatory Program
US Army Corps of Engineers, Seattle District PO Box 3755 Seattle, WA
98124
206-766-6438
206-764-6602 fax
-----Original Message -----
From: Sara Noland fmailto:SNoland(@esassoc.coml
Sent: Monday, December 12, 2011 10:31 AM
To: Lull, Lori C NWS
Subject: East Renton Lift Station JARPA
Hi Lori,
I left you a voice message on Friday regarding a JARPA we submitted on behalf of the City of
Renton for the East Renton Lift Station project (a new sewer line). The project is in the
Maple Valley area of King County. I mailed the JARPA in to the Seattle District several weeks
ago and haven't heard anything yet. Just wondering if you received it? I appreciate your
help in checking on the status of the application.
Thank you,
1
Sara Noland
Project Scientist
ESA I Northwest
5309 Shilshole Avenue NW, Suite 200
Seattle, WA 98107
206.789-9658 1 206.789-9684 fax
snoland(@esassoc.com <mailto:snoland(@esassoc.com>
Classification: UNCLASSIFIED
Caveats: NONE
r � �
David Christensen
From: Sara Noland [SNoland@esassoc.com]
Sent:. Monday, October 10, 2011 3:20 PM
To: David Christensen.
Subject: RE: Signed Page for Renton SEPA
Attachments: JARPA sig page.pdf
Thanks Dave. Here is the JARPA signature page - please complete section 11 a. Three signed copies should do it.
Please-mai}-to-mv attention:
Sara Noland
ESA
5309 Shilshole Ave NW
Suite 200
Seattle, WA 98107
Than
10
From: David Christensen jmailto:Dchristen(cbRentonwa.govl
Sent: Mon 10/10/2011 1:28 PM
To: Sara Noland
Subject: Signed Page for Renton SEPA
Sara,
Here is the signature for the SEPA. Go ahead and send me the page for signature for the JARPA and I will mail it back to you.
Dave C.
Part 11—Authorizing Signatures
Signatures are required before submitting the JARPA package. The JARPA package includes the JARPA form,
project plans, photos, etc. hel
1-1 a. Applicant Signature (required) [help]
I certify that to the best of my knowledge and belief, the information provided in this application is true, complete,
and accurate. I also certify that I have the authority to carry out the proposed activities, and I agree to start work
only after I have received all necessary permits.
I hereby auth a fhe agent named in Part 3 of this application to act on my behalf in matters related to this
applicatio (initial)
By initialing here, I state that I have the authority to grant access to the property. I also give my consent to the
permitting agencies ' g tht property where the project i sp project site or any work
related to the projectent (initial)
Applicant Printed Name Appli nt S' a Date
11 b. Authorized Agent Signature heel
I certify that to the best of my knowledge and belief, the information provided in this application is true, complete,
and accurate. I also certify that I have the authority to carry out the proposed activities and I agree to start work
only after all necessary permits have been issued.
Authorized Agent Printed Name
Authorized Agent Signature
11 c. Property Owner Signature (if not applicant). h[�el )
Not required if project is on existing rights -of -way or easements.
Date
I consent to the permitting agencies entering the property where the project is located to inspect the project site
or any work. These inspections shall occur at reasonable times and, if practical, with prior notice to the
landowner.
Property Owner Printed Name
Property Owner Signature Date
18 U.S.0 §1001 provides that: Whoever, in any manner within the jurisdiction of any department or agency of the United States knowingly
falsifies, conceals, or covers up by any trick, scheme, or device a material fact or makes any false, fictitious, or fraudulent statements or
representations or makes or uses any false writing or document knowing same to contain any false, fictitious, or fraudulent statement or
entry, shall be fined not more than $10,000 or imprisoned not more than 5 years or both.
If you require this document in another format, contact The Governor's Office of Regulatory Assistance (ORA). People with hearing loss
can call 711 for Washington Relay Service. People with a speech disability can call (877) 833-6341.
ORA publication number: ENV-019-09
JARPA 2010 v1 3/30/2010 Page 16 of 16
OY,2010
WASHINGTON STATE
Joint Aquatic Resources Permit
Application (JARPA) Form'
USE BLACK OR BLUE INK TO ENTER ANSWERS IN WHITE SPACES BELOW.
Part 1—Project Identification
i-t-- ----------'----:--- ---.--
- AGENCY USE ONLY03
,
Date received:.
i
k i
US Army Corps
I
of Engineers e
�� smtd•
Agency reference#:�
Tax Parcel'#(s)r.,
1. Project Name (A name for your project that you create. Examples: Smith's Dock or Seabrook Lane Development) h[ gm
East Renton Lift Station Elimination
Part 2—Applicant
The person or organization responsible for the project. hel j
2a. Name (Last, First, Middle) and Organization (if applicable)
Christensen, Dave-, City of Renton Public Works
2b. Mailing Address (Street or PO Box)
1055 S. Grady Way
2c. City, State, Zip
Renton, WA 98057
2d. Phone (1)
2e. Phone (2)
2f. Fax
2g E-mail
(425) 430-7241
( )
( )
Dchristen@Rentonwa.gov
Part 3—Authorized Agent or Contact
Person authorized to represent the applicant about the project. (Note: Authorized agent(s) must -sign 11 b. of this
application.) heI )
3a. Name (Last, First, Middle) and Organization (if applicable)
Noland, Sara - ESA
3b. Mailing Address (Street or PO Box)
F5309 Shilshole Ave NW Suite 200
Additional forms may be required for the following permits:
• If your project may qualify for Department of the Army authorization through a Regional General Permit (RGP), contact the U.S. Army Corps of
Engineers for application information (206) 764-3495:
• If your project might affect species listed under the Endangered Species Act, you will need to fill out a Specific Project Information Form (SPIF) or
prepare a Biological Evaluation. Forms can be found at
http://www.nws.usace.army.mil/PublicMenu/Menu.cfm?sitename=REG&pagename=mainpage_ESA
• If you are applying for an Aquatic Resources Use Authorization you will need to fill out and submit an Application for Authorization to Use State -
Owned Aquatic Lands form to DNR, which can be found at http://www.dnr.wa.gov/Publications/agr_use_auth_app.doc
• Not all cities and counties accept the JARPA for their local Shoreline permits. If you think you will need a Shoreline permit, contact the appropriate
city or county government to make sure they will accept the JARPA.
2To access an online JARPA form with [help] screens, go to
http://www.epermitting.wa.gov/site/alias_resourcecenter/jarpa_jarpa_form/9984/jarpa_form.aspx .
For other help, contact the Governor's Office of Regulatory Assistance at 1-800-917-0043 or help@ora.wa.gov.
JARPA 2010 v1 3/30/2010 Page 1 of 16
Part 4—Property Owner(s)
Contact information for people or organizations owning the property(ies) where the project will occur. hl elpl
❑ Same as applicant. (Skip to Part 5.)
❑ Repair or maintenance activities on existing rights -of -way or easements. (Skip to Part 5.)
❑ There are multiple property owners. Complete the section below and fill out JARPA Attachment A for each
additional property owner.
4a.
Name (Last, First, Middle) and Organization (if applicable)
Name King County Parks [get contact info from City]
41b.
Mailing Address (Street or PO Box)
4c.
City, State, Zip
4d.
Phone (1)
4e. Phone (2)
4f. Fax
4g E-mail
Part 5—Project Location(s)
Identifying information about the property or pro pertieg where the project will occur. hl elpl
❑ There are multiple project locations (e.g., linear projects). Complete the section below and use JARPA
Attachment B for each additional project location.
5a. Indicatelhe type of ownership of the property: (check all that apply.) 'n[hpl )
❑ State Owned Aquatic Land (If yes or maybe, contact the Department of Natural Resources (DNR) at (360) 902-1100)
❑ Federal
® Other publicly owned (state, county, city, special districts like schools, ports, etc.)
❑ Tribal
❑ Private
5b. Street Address (Cannot be a PO Box. If there is no address, provide other location information in 5p.) [help]
See 5p for driving directions.
5c. City, State, Zip (If the project is not in.a city*or town, provide the name of the nearest city or town.) [Lel
See 5p for driving directions.
5d. County [help]
; 5
King
JARPA 2010 v1 3/30/2010 Page 2 of 16
5e. Provide the section, township, and range for the project location. of eip
Section
Section
Township
Range
SW
14
23W
5E
5f. Provide the latitude and longitude of the project location. hf elgl
• Example: 47.03922 N lat. /-122.89142 Wlong. (NAD 83)
47.4803400 N /-122.142901 ° W (NAD 83)
5g. List the tax parcel number(s) for the project location. of elp]
• The local county assessor's office can provide this information.
5126301030, 1523059055, 1423059007, 666903TRCT, 1523059230
5h. Contact information for all adjoining property owners. (If you need more space, use JARPA Attachment C.) of ejpl
Name
Mailing Address
Tax Parcel # (if known)
Get from City
JARPA 2010 v1 3/30/2010 Page 3 of 16
5i. List all wetlands on or adjacent to the project location. [nelpi,
Wetland ID
Size
HGM Class
Cowardin Class and
(sq. ft.)
Dominant Vegetation
A
3,490 onsite
Slope/
PFO: red alder, black
(approx. 7,000
Depressional
cottonwood, salmonberry,
total)
cascara, Douglas' spirea
B
6,540
Slope/
PFO: black cottonwood,
Depressional/
Pacific ninebark, salmonberry,
Riverine
willow, Himalayan blackberry
C
190
Depressional
PFO: red alder
D
2,600
Slope/
PFO: black cottonwood, red
Depressional/
alder, Pacific ninebark,
Riverine
salmonberry, red -osier
dogwood, creeping buttercup
E
11,050
Slope/
PFO: black cottonwood, red
Depressional/
alder, western red cedar,
Riverine
salmonberry, Pacific ninebark,
red elderberry, lady fern, sword
fern, sedges
F
6,170
Slope/
PFO: black cottonwood, red
Depressional/
alder, Douglas' spirea, Pacific
Riverine
ninebark, sword fern,
Himalayan blackberry
G
2,200
Slope/
PFO: black cottonwood, red
Depressional/
alder, Douglas' spirea
Riverine
5j. List all waterbodies (other than wetlands) on or adjacent to the project location. rhelp]
The main stream channel, known as Stewart Creek, enters the northern end of the study area via a plastic
culvert, and exits the southern end of the study area via a grated concrete culvert. The stream then enters the
storm drain system south of Maplewood Park and eventually converges with the Cedar River approximately 0.75
mile south of the project area.
5k. Is any part of the project area within a 100-year flood plain? [help]
❑ Yes ® No ❑ Don't know
51. Briefly describe the vegetation and habitat conditions on the property. rhelp]
The study area contains a mixed conifer -deciduous forest crossed by unpaved foot trails. The forest was
historically logged and the trees are relatively young. The site contains evidence of other past disturbance
including an old concrete building foundation. An overhead power line runs along the western edge of the study
area, and a buried gas line also extends north to south through the study corridor. A stream (Stewart Creek)
flows through the study area from north to south. Several wetlands are associated with the stream (see item 5i).
Elevations range from 400 feet at the north end of the study area down to 378 feet at the south end of the study
area.
JARPA 2010 v1 3/30/2010 Page 4 of 16
5m. Describe how the property is currently used. h�ei ] w:
The northern portion of the project site is located in the City of Renton and consists of a gravel access road and
a pump station building (approx. 100 square feet) on a fenced gravel pad. Stormwater detention ponds are
located north of the access road. The remainder of the project to the south is within unincorporated King
County, mostly within Maplewood Park. The park is a 45-acre site owned by King County. The portion of the
park that would be affected by the proposed project is forested and undeveloped except for informal foot trails.
South of the park, the proposed sewer pipeline would be located within 148th Place SE in King County.
5n. Describe how the adjacent properties are currently used. hei ] '
Most of the project site is within an undeveloped section of King County's Maplewood Park. The northern end of
the pipeline corridor is located along an existing gravel road near the Parkside Court residential neighborhood
which is within the City of Renton. The southern end of the project is located in the Briar Hills Division No. 4
residential neighborhood along SE 138th Place and 148th Place SE. Maplewood Heights Elementary School is
northwest of the park.
5o. Describe the structures (above and below ground) on the property, including their purpose(s). [help]
The project consists of a new sewer pipeline that would be installed below ground. The proposed project does
not include any above -ground structures except for manholes that would be used to access the pipeline for
maintenance. An existing pump station building (100 square feet) would be removed.
5p. Provide driving directions from the closest highway to the project location, and attach a map. hei ]
From Interstate 405, take Exit 4 and proceed southeast on SR 169 (Maple Valley Highway). Pass the
Maplewood Golf Course and take a left on 154th Place SE. Proceed across the Cedar River and up the hill. At
the stop sign, proceed north (left) on 1561h Avenue SE. Make a left onto SE 136th Street. Take a right at the
dead end, then a left onto SE 2nd Street. Make an immediate left onto SE 2"d Court. Make a left onto a gravel
access road, which leads to the existing pump station (north end of the project). See Sheet 1 for project vicinity.
Part 6—Project Description
6a. Summarize the overall project. You can provide more detail in 6d. rheip]
The purpose of the project is to convert a portion of the City of Renton sewer system from a pumped system to.a
gravity sewer system. This involves installation of a new sewer pipeline crossing Maplewood Park, and
elimination of an existing lift station north of the park. The project consists of approximately 1,030 linear feet of
new sewer pipeline, which will be installed using open trenches (Sheet 2).
61b. Indicate the project category. (Check all that apply) h[�el ]J;
❑ Commercial ❑ Residential ® Institutional ❑ Transportation ❑ Recreational
❑ Maintenance ❑ Environmental Enhancement
JARPA 2010 v1 3/30/2010 Page 5 of 16
6c. Indicate the major elements of your project. (check all that apply) [help],
❑ Aquaculture
❑ Bank Stabilization
❑ Boat House
❑ Boat Launch
❑ Boat Lift
❑ Bridge
❑ Bulkhead
❑ Buoy
❑ Channel Modification
❑ Other:
❑ Culvert
❑ Dam / Weir
❑ Dike / Levee / Jetty
❑ Ditch
❑ Dock / Pier
❑ Dredging
❑ Fence
❑ Ferry Terminal
❑ Fishway
❑ Float
❑ Geotechnical Survey
❑ Land Clearing
❑ Marina / Moorage
❑ Mining
❑ Outfall Structure
❑ Piling
❑ Retaining Wall
(upland)
❑ Road
❑ Scientific
Measurement Device
❑ Stairs
❑ Stormwater facility
❑ Swimming Pool
® Utility Line
6d. Describe how you plan to construct each project element checked in 6c. Include specific construction
methods and equipment to be used. h� elp]
• Identify where each element will occur in relation to the nearest waterbody.
• Indicate which activities are within the 100-year flood plain.
The following general sequence of construction activities is anticipated for pipe installation.
1. Survey and mark construction limits.
2. Install temporary erosion and sediment control (TESC) measures in 148th Place SE.
3. Remove existing 8-inch-diameter gravity sewer and existing 48-inch-diameter manhole, and install 15-
inch-diameter gravity sewer and new 60-inch-diameter manhole in 148th Place SE.
4. Confirm operation of new 15-inch-diameter gravity sewer by television inspection, air test and inspection
of manholes with channeling.
5. Relocate fencing to provide equipment access at East Renton Lift Station.
6. Clear and grub 30-foot-wide corridor and install remaining TESC measures for installation of the gravity
pipeline.
7. Temporarily divert stream flow (Stewart Creek) by bypass pumping and install temporary stream
crossing.
8. Install 1 5-inch-dia meter gravity sewer in Maplewood Park.
9. Install 1 2-inch-dia meter gravity sewer between existing manholes in existing gravel access area north of
the park.
10. Confirm operation of new 15-inch and 12-inch-diameter gravity sewer by television inspection and air
test.
JARPA 2010 v1 3/30/2010 Page 6 of 16
11. Install temporary wastewater bypass pumping systems and test.
12. Perform improvements to existing manholes north of the park and fill existing 12-inch-diameter gravity
sewer.
13. Inspect manhole channeling.
14. Decommission bypass pumping systems and commence gravity sewer operation.
15. Remove temporary stream crossing, and revegetate work areas within the park.
16. Decommission and demolish existing lift station facilities.
17. Construct miscellaneous site improvements at East Renton Lift Station site.
18. Perform asphalt overlay in 148th Place SE.
The project area is not located in within a 100-year floodplain. Construction will require crossing one onsite
stream (Stewart Creek). Work will occur in upland areas within 10 to 20 feet of two wetlands; the other five
onsite wetlands are at least 30 feet from the construction corridor (Sheet 2). The project corridor will cross the
upland buffer areas of Stewart Creek and wetland buffers.
The types of equipment expected to be used for construction include a backhoe, trackhoe, bulldozer, dump
truck, concrete truck, and 5 to 10 HP submersible pumps.
6e. What are the start and end dates for project construction? (month/year) [help)
• If the project will be constructed in phases or stages, use JARPA Attachment D to list the start and end dates of each phase or .:
stage.
Start date: summer/fall 2012 End date: four months after start ❑ See JARPA Attachment D
6f. Describe the purpose of the project and why you want or need to perform it. hf elpl
The East Renton Lift Station is just under 10 years old. It is located north of Maplewood Park near the end of the
NE 2nd Court cul-de-sac (Sheet 1). The lift station serves to pump sewage from nearby residential
neighborhoods (Maplewood Estates, Parkside Court, Shy Creek, Liberty Ridge, and others for a service area of
approximately 430 acres) to the gravity sewer system located near N.E. 4th Street. The City of Renton (City)
prefers to serve customers via a gravity sewer pipeline rather than a lift station whenever feasible. A gravity
system eliminates electricity costs for pumping and equipment maintenance, which greatly reduces annual
Operation and Maintenance (O&M) costs. Based on survey data, conversion to a gravity system is possible at
this location by installing a new pipeline crossing through an undeveloped portion of Maplewood Park and
connecting to the Briar Hills Division No. 4 sewer system to the south.
6g. Fair market value of the project, including materials, labor, machine rentals, etc. hLelp]
$480,000
6h. Will any portion of the project receive federal funding? hell ] x
• If yes, list each agency providing funds.
❑ Yes ® No ❑ Don't know
JARPA 2010 v1 3/30/2010 Page 7 of 16
JARPA 2010 v1 3/30/2010 Page 8 of 16
Part 7-Wetlands: Impacts and Mitigation
® Check here if there are wetlands or wetland buffers on or adjacent to the project area.
(If there are none, skip to Part 8.) [help]
7a. Describe how the project has been designed to avoid and minimize adverse impacts to wetlands. n'e"x'j
❑ Not applicable
The location of the proposed project is constrained by the need to make connections to the existing sewer main.
The proposed pipeline alignment was selected to avoid impacts to wetlands and to follow an existing utility
corridor and foot trails to the extent possible. Avoiding impacts to buffer areas by locating the pipeline farther to
the east or west would have required a longer pipeline traversing a larger area of native forest, resulting in
greater impacts to trees and wildlife habitat.
7b. Will the project impact wetlands? [help]
❑ Yes ® No ❑ Don't know
7c. Will the project impact wetland buffers? heel ]
® Yes ❑ No ❑ Don't know
7d. Has a wetland delineation report been prepared? tLeel ]
• If yes, submit the report, including data sheets, with the JARPA package.
® Yes ❑ No
7e. Have the wetlands been rated using the Western Washington or Eastern Washington Wetland Rating sy2
System? [help]
• If yes, submit the wetland rating forms and figures with the JARPA package.
® Yes ❑ No ❑ Don't know
7f. Have you prepared a mitigation plan to compensate for any adverse impacts to wetlands? h( eM
• If yes, submit the plan with the JARPA package and answer 7g.
• If No, or Not applicable, explain below why a mitigation plan should not be required.
❑ Yes ❑ No ® Not applicable
This project will not directly adversely impact the adjacent wetlands. A plan to restore buffer areas affected
by the project is attached.
7g. Summarize what the mitigation plan is meant to accomplish, and describe how a watershed approach was
used to design the plan. hf elpl
No wetland impacts or wetland mitigation are proposed. A mitigation plan has been developed to address
wetland buffer impacts.
JARPA 2010 v1 3/30/2010 Page 9 of 16
71h. Use the table below to list the type and rating of each wetland impacted; the extent and duration„of the -
impact; and the type and amount of mitigation proposed. Or if you: are submitting a mitigation plan with a
similar table, you can state (below) where we can find,this information in the plan. hei
Activity (fill,
Wetland
Wetland
Impact
Duration
Proposed
Wetland
drain, excavate,
Name'
type and
area (sq.
of impact3
mitigation
mitigation area
flood, etc.)
rating
ft. or
type'
(sq. ft. or
category'
Acres)
acres)
Not applicable
If no official name for the wetland exists, create a unique name (such as "Wetland 1 "). The name should be consistent with other project documents, such
as a wetland delineation report.
2
Ecology wetland category based on current Western Washington or Eastern Washington Wetland Rating System. Provide the wetland
rating forms with the JARPA package.
'Indicate
the days, months or years the wetland will be measurably impacted by the activity. Enter "permanent' if applicable.
`Creation (C), Re-establishment/Rehabilitation (R), Enhancement (E), Preservation (P), Mitigation Bank/In-lieu fee (B)
Page number(s) for similar information in the mitigation plan, if available:
7i. For all filling activities identified in 7h., describe the source and nature of the fill material, the amount in cubk'
yards that will be used, and how and where it will be placed into the wetland.[Leipi`
No fill will be placed in wetlands.
7j. For all excavating activities identified in 7h., describe the excavation method, type and amount of material' irf `
cubic yards you will remove, and where the material will be disposed. rhelgj ->
No material will be excavated from wetlands.
Part 8—Waterbodies (other than wetlands): Impacts and Mitigation
In Part 8, "waterbodies" refers to non -wetland waterbodies. (See Part 7 for information related to wetlands.) LheM
® Check here if there are waterbodies on or adjacent to the project area. (If there are none, skip to Part 9.)
8a. Describe how the project is designed to avoid and minimize adverse impacts to the aquatic environment
[help]
❑ Not applicable
The proposed sewer pipeline would cross Stewart Creek, a non -fish -bearing stream (Sheet 2). Impacts to the
stream have been minimized by locating the pipeline crossing where an existing unvegetated footpath currently
exists. Work would occur during the dry season, when streamflows are at low levels. Prior to construction, the
work area within the stream channel will be isolated using cofferdams, and streamflows will be diverted
(pumped) around the work area (Sheets 3 and 4).
8b. Will your project impact a waterbody or the area around a waterbody? hf elpl K�
® Yes ❑ No
JARPA 2010 v1 3/30/2010 Page 10 of 16
8c. Have you prepared a mitigation plan to compensate for the p�oject's adverse impacts to non -wetland E .
waterbodies? r,( id
• If yes, submit the plan with the JARPA package and answer 8d.
ia If No, or Not.applicable, explain below why a mitigation plan should not be required'.
® Yes ❑ No . ❑ Not applicable
8d. Summarize what the mitigation plan is meant to accomplish. Describe how a watershed approach was -
used to design the plan.
• If you already completed 7g., you do not need to restate your answer here. hf pjp]
The mitigation plan is designed to protect and restore the portion of Stewart Creek that is affected by the
proposed pipeline crossing. This includes protecting the stream from erosion and sedimentation during
construction; restoring riparian vegetation to the streambanks after construction; and restoring the streambed
substrate over the pipeline crossing.
8e. Summarize impact(s) to each waterbody in the table below. [help]
Activity (clear,
Waterbody
Impact
Duration of
Amount of material
Area (sq. ft. or
dredge, fill, pile
name'
location
impact3
to be placed in or
linear ft.) of
drive, etc.)
removed from
waterbody
waterbody
directly affected
Fill: Temporary
Stewart
In stream
Four
Approx. 30 CY of
Approx. 330
construction
Creek
channel
months
quarry spall placed in
square feet of
equipment
stream channel over
streambed
crossing
temporary culvert
Trench and
Stewart
In stream
Permanent
Approx. 5 CY of
Approx. 110
backfill:
Creek
channel
material removed
square feet of
Permanent
from stream channel
streambed for
pipeline crossing
during trenching;
pipeline trench
trench will be
backfilled, sealed, and
the streambed
restored with cobbles
If no official name for the waterbody exists, create a unique name (such as "Stream 1") The name should be consistent with other documents provided.
z Indicate whether the impact will occur in or adjacent to the waterbody. If adjacent, provide the distance between the impact and the waterbody and
indicate whether the impact will occur within the 100-year flood plain.
' Indicate the days, months or years the waterbody will be measurably impacted by the work. Enter "permanent" if applicable.
JARPA 2010 v1 3/30/2010 Page 11 of 16
8f. For all activities identified in 8e., describe the source and nature of the fill material, amount (in cubic yards) _
you will use, and how and where it will be placed into the waterbody. hf elplr
:'.
A temporary crossing of Stewart Creek will be installed to allow equipment access from both ends of the work
area (north and south). The temporary equipment crossing will be located within the 30-foot-wide construction
corridor, adjacent to the permanent trenched pipeline crossing of the stream to minimize disturbance of the
streambed and banks (Sheets 5 and 6). The temporary crossing will consist of approximately 30 CY of riprap
placed in the stream channel for equipment to drive on. A culvert placed under the riprap will carry streamflow
through the work area until construction is complete. Riprap will be obtained from a commercial source and
placed in the stream channel using heavy equipment working from the streambank.
Streamflows in Stewart Creek will be diverted around the work area. Cofferdams will be placed in the stream
channel, both upstream and downstream of the work area, encompassing the locations of both the temporary
equipment crossing and the adjacent pipeline trench (Sheets 3 and 4). Streamflow will be pumped from above
the upstream cofferdam into a temporary flexible pipe. Flows will be discharged from the flexible pipe back to
the stream, at a location downstream of the lower cofferdam. The temporary equipment crossing will then be
constructed while the streamflow is being diverted by the pump. A culvert will be installed through the
temporary equipment crossing, extending from the upper cofferdam, through the culvert, to a point downstream
of the lower cofferdam (Sheets 5 and 6). Once the culvert is in place, flows will be diverted through the culvert
and the pump will be removed. The temporary equipment crossing and culvert will remain in place throughout
the construction period. This will serve to isolate the work area from streamflows and minimize sedimentation in
the stream.
Following construction, the temporary equipment crossing and culvert will be removed. The streambed and
banks will be restored to existing conditions. Stream flows will return to the channel as under current conditions.
The trench backfill and cut-off walls within the trench are design to prevent stream flow from diverting into the
trench (Sheet 7). The streambanks will be replanted with native vegetation (Sheet 8).
8g. For all excavating or dredging activities identified in 8e., describe the method for excavating or dredging,"
type and amount of material you will remove, and where the material will be disposed.[help]
The new sewer pipeline would be installed across Stewart Creek using a trenched crossing immediately south
of the temporary equipment crossing (Sheet 5), In general, the pipeline trench will be 4 feet wide but could be
up to 10 feet wide depending on the side slopes needed at the top of the trench. The pipe would have a
minimum 5 feet depth of cover at the stream crossing. Approximately 5 CY of material will be removed from the
trench and disposed of offsite. The pipe will be laid in the trench, then the trench backfilled with pipe bedding
material and sealed to prevent streamflow from entering the trench after construction is complete (see item 8f).
The surface of the sealed trench will be restored with cobbles to provide natural substrate on the streambed.
JARPA 2010 v1 3/30/2010 Page 12 of 16
Part 9—Additional Information
Any additional information you can provide helps the reviewer(s) understand your project. Complete as much of
this section as you can. It is ok if you cannot answer a question.
9a. If you have already worked with any government agencies on this project, list them below. hj�elp ] ,
Agency Name
Contact Name
Phone
Most Recent`
Date of Contact
King County DDES
Laura Casey
206-296-7158
January 2011
Larry Fisher
WDFW
(425) 313-5683
March 2011
91b. Are any of the wetlands or waterbodies identified in Part 7 or Part 8 on the Washington Department of
Ecology's 303(d) List? hj�el ]
• If yes, list the parameter(s) below.
• If you don't know, use Washington Department of Ecology's Water Quality Assessment tools at:
hftp://www.ecy.wa.gov/programs/wq/303d/.
❑ Yes ® No
9c. What U.S. Geological Survey Hydrological Unit Code (HUC) is the project in? [help] f
• Go to hftp://cfpub.epa.gov/surf/locate/index.cftn to help identify the HUC.
17110012: Lake Washington drainage
9d. What Water Resource Inventory Area Number (WRIA #) is the project in? h[�el ]
• Go to hftp://www.ecy.wa.gov/services/gis/maps/wria/wria.htm to find the WRIA #. s
WRIA 8: Cedar/Sammamish River drainage
9e. Will the in -water construction work comply with the State of Washington water quality standards for
turbidity? h( elp]
• Go to hfto://www.ecy.wa.gov/programs/wq/swgs/criteria.html for the standards.
® Yes ❑ No ❑ Not applicable
9f. If the project is within the jurisdiction of the Shoreline Management Act, what is the local shoreline
environment designation? n[ ele]
• If you don't know, contact the local planning department:
• For more information, go to: hftp://www.ecy.wa.clov/programs/sea/sma/laws rules/173-26/211, designations html.
❑ Rural ❑ Urban ❑ Natural ❑ Aquatic ❑ Conservancy ❑ Other
9g. What is the Washington Department of Natural Resources Water Type? hf elpl'
• Go to hfto://www.dn(.wa.gov/BusinessPermits/Topics/ForestPracticesApplicatio�s/Pages/fp watertypina.asox for the Forest
Practices Water Typing System.
❑ Shoreline ❑ Fish ® Non -Fish Perennial ❑ Non -Fish Seasonal
JARPA 2010 v1 3/30/2010 Page 13 of 16
9h. Will this project be designed to meet the Washington Department of Ecology's most current storrnwater
manual? hf elpl
• If no, provide the name of the manual your project is designed to. meet.
® Yes ❑ No
2005 Stormwater Manual for Western Washington
GIL If you know what the property was used for in the past, describe below. noel ]
There is evidence of past residential use (an old concrete building pad) east of the pipe alignment. Numerous
aboveground and buried utilities cross this part of Maplewood Park.
9j. Has a cultural resource (archaeological) survey been performed on the project area? [help] s
• If yes, attach it to your JARPA package. 2
❑ Yes ® No
9k. Name each species listed under the federal Endangered Species Act that occurs in the vicinity of the project
area or might be affected by the proposed work. h[�el ]
No threatened or endangered species are known to occur in Maplewood Park or Stewart Creek. Stewart Creek
joins the Cedar River approximately 0.75 mile downstream of Maplewood Park. The Cedar River supports
Chinook salmon (federally listed as threatened), coho salmon, sockeye salmon, bull trout/Dolly Varden (federally
listed threatened), and winter steelhead (federally listed threatened).
91. Name each species or habitat on the Washington Department of Fish and Wildlife's Priority Habitats and
Species List that might be affected by the proposed work. [help] 't
The WDFW priority habitats and species (PHS) database does not identify sensitive species or habitats within
Maplewood Park or the immediate vicinity.
JARPA 2010 v1 3/30/2010 Page 14 of 16
Part 10—SEPA Compliance and Permits
Use the resources and checklist below to identify the permits you are applying for.
• Online Project Questionnaire at hftp://apps.ecy.wa.-gov/opas/.
• Governor's Office of Regulatory Assistance at (800) 917-0043 or help .ora.wa.gov.
• For a list of agency addresses to send your application, click on the "where to send your completed
JARPA" at http://www.epermitting.wa.gov.
10a. Compliance with the State Environmental Policy Act (SEPA). (Check all that,apply.) [help]
• For more information about SEPA, go to www.ecy.wa.gov/programs/sea/sepa/e-review.html.
❑ A copy of the SEPA determination or letter of exemption is included with this application.
® A SEPA determination is pending with _City of Renton (lead agency). The expected decision date is fall
2011
❑ 1 am applying for a Fish Habitat Enhancement Exemption. (Check the box below in 10b.) [help]
❑ This project is exempt (choose type of exemption below).
❑ Categorical Exemption. Under what section of the SEPA administrative code (WAC) is it exempt?
❑ Other:
❑ SEPA is pre-empted by federal law.
10b. Indicate the permits you are applying for. (Check all that apply.) [help]
LOCAL GOVERNMENT
Local Government Shoreline permits:
❑ Substantial Development ❑ Conditional Use ❑ Variance
❑ Shoreline Exemption Type (explain):
Other city/county permits:
❑ Floodplain Development Permit ® Critical Areas Ordinance
STATE GOVERNMENT
Washington Department of Fish and Wildlife:
® Hydraulic Project Approval (HPA) ❑ Fish Habitat Enhancement Exemption
Washington Department of Ecology:
® Section 401 Water Quality Certification
Washington Department of Natural Resources:
❑ Aquatic Resources Use Authorization
FEDERAL GOVERNMENT
United States Department of the Army permits (U.S. Army Corps of Engineers):
® Section 404 (discharges into waters of the U.S.) ❑ Section 10 (work in navigable waters)
United States Coast Guard permits:
❑ General Bridge Act Permit ❑ Private Aids to Navigation (for non -bridge projects)
JARPA 2010 v1 3/30/2010 Page 15 of 16
Part 11—Authorizing Signatures
Signatures are required before submitting the JARPA package. The JARPA package includes the JARPA form,
project plans, photos, etc. h[ el
11 a. Applicant Signature (required) n[�el j
I certify that to the best of my knowledge and belief, the information provided in this application is true, complete,
and accurate. I also certify that I have the authority to carry out the proposed activities, and I agree to start work
only after I have received all necessary permits.
I hereby authorize the agent named in Part 3 of this application to act on my behalf in matters related to this
application. (initial)
By initialing here, I state that I have the authority to grant access to the property. I also give my consent to the
permitting agencies entering the property where the project is located to inspect the project site or any work
related to the project. (initial)
Applicant Printed Name Applicant Signature Date
11 b. Authorized Agent Signature hf eM
I certify that to the best of my knowledge and belief, the information provided in this application is true, complete,
and accurate. I also certify that I have the authority to carry out the proposed activities and I agree to start work
only after all necessary permits have been issued.
Authorized Agent Printed Name Authorized Agent Signature Date
11 c. Property Owner Signature (if not applicant). [help]
Not required if project is on existing rights -of -way or easements.
I consent to the permitting agencies entering the property where the project is located to inspect the project site
or any work. These inspections shall occur at reasonable times and, if practical, with prior notice to the
landowner.
Property Owner Printed Name Property Owner Signature Date
18 U.S.0 §1001 provides that: Whoever, in any manner within the jurisdiction of any department or agency of the United.States knowingly
falsifies, conceals, or covers up by any trick, scheme, or device a material fact or makes any false, fictitious, or fraudulent statements or
representations or makes or uses any false writing or document knowing same to contain any false, fictitious, or fraudulent statement or
entry, shall be fined not more than $10,000 or imprisoned not more than 5 years or both.
If you require this document in another format, contact The Governor's Office of Regulatory Assistance (ORA). People with hearing loss
can call 711 for Washington Relay Service. People with a speech disability can call (877) 833-6341.
ORA publication number: ENV-019-09
JARPA 2010 v1 3/30/2010 Page 16 of 16
1 ��oo
I
✓'.<
r-----7�/
M
M
1P0 40 80 160
I_
NScale in Feet
PURPOSE: Restore stream
affected by temporary equipment
crossing and pipeline trenching.
DATUM: NAVD 1988
SITE PLAN
SITE LOCATION ADDRESS:
In and adjacent to Maplewood Park,
King County and City of Renton,
Washington
a
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PROPOSED: East Renton Lift Station
Elimination — remove existing pump station
and install gravity sewer line
IN: Section 14, Township 23, Range 5 East
COUNTY: King STATE: WA
SHEET. 2 of 8
DATE: July 2011
SACKS SHALL BE #10 JUTE BURLAP
OR APPROVED ALTERNATE FILLED
WITH 48 TO 55 LB& OF PEA GRAVEL
BACKFILL FOR DRAINS.
I. -
PLAN
STREAM
SCALE: NTS
FILE: 8235C10-C-08
INSTALL APPROXIMATELY 3 FEET
ABOVE CHANNEL INVERT. ALIGN
LOW POINT IN DAM WITH CENTER
OF CHANNEL.
ADD VISOUEEN — —
THROUGH FILLED
BURLAP SACK STACK `
PLACE SACKS FIRMLY
AGAINST GROUND LINE
AND ADJACENT SACKS.
SECTION A
A STREAM DEWATERING PLAN
C-02 SCALE: 1' = 10'-0'
FILE: 8235C00-C-100 See Sheet 4 for Key Notes.
`n
F
y See Appendix A of Stream and Buffer Mitigation Plan for enlarged drawings.
PURPOSE: Restore stream WORK AREA ISOLATION & PROPOSED: East Renton Lift Station
affected by temporary equipment STREAMFLOW DIVERSION Elimination — remove existing pump station
crossing and pipeline trenching. and install gravity sewer line
DATUM: NAVD 1988 SITE LOCATION ADDRESS: IN: Section 14, Township 23, Range 5 East
In and adjacent to Maplewood Park, COUNTY: King STATE: WA
King County and City of Renton,
Washington SHEET. 3 of 8
DATE: July 2011
KEY NOTES:
OTHE FILTER FABRIC SHALL BE PURCHASED IN A CONTINUOUS ROLL CUT TO THE LENGTH OF THE BARRIER TO AVOID USE OF
JOINTS. WHEN JOINTS ARE NECESSARY, FILTER CLOTH SHALL BE SPLICED TOGETHER ONLY AT A SUPPORT POST, WITH A
MINIMUM 6-INCH OVERLAP, AND BOTH ENDS SECURELY FASTENED TO THE POST.
OTHE FILTER FABRIC FENCE SHALL BE INSTALLED TO FOLLOW THE CONTOURS (WHERE FEASIBLE). THE FENCE POSTS SHALL
BE SPACED A MAXIMUM OF 6 FEET APART AND DRIVEN SECURELY INTO THE GROUND (MINIMUM OF 30 INCHES).
OA TRENCH SHALL BE EXCAVATED, ROUGHLY 8 INCHES WIDE AND 12 INCHES DEEP, UPSLOPE AND ADJACENT TO THE WOOD
POST TO ALLOW THE FILTER FABRIC TO BE BURIED.
OWHEN STANDARD STRENGTH FILTER FABRIC IS USED, A WIRE MESH SUPPORT FENCE SHALL BE FASTENED SECURELY TO
THE UPSLOPE SIDE OF THE POSTS USING HEAVY-DUTY WIRE STAPLES AT LEAST 1 INCH LONG, TIE WIRES OR HOG RINGS.
THE WIRE SHALL EXTEND INTO THE TRENCH A MINIMUM OF 4 INCHES AND SHALL NOT EXTEND MORE THAN 36 INCHES
ABOVE THE ORIGINAL GROUND SURFACE.
OTHE STANDARD STRENGTH FILTER FABRIC SHALL BE STAPLED OR WIRED THE FENCE, AND 20 INCHES OF THE FABRIC SHALL
BE EXTENDED INTO THE TRENCH. THE FABRIC SHALL NOT EXTEND MORE THAN 36 INCHES ABOVE THE ORIGINAL GROUND
SURFACE. FILTER FABRIC SHALL NOT BE STAPLED TO EXISTING TREES.
OWHEN EXTRA -STRENGTH FILTER FABRIC AND CLOSER POST SPACING ARE USED, THE WIRE MESH SUPPORT FENCE MAY BE
ELIMINATED. IN SUCH A CASE, THE FILTER FABRIC IS STAPLED OR WIRED DIRECTLY TO THE POSTS.
O7 THE TRENCH SHALL BE BACKFILLED WITH 3/4-INCH MINIMUM DIAMETER WASHED GRAVEL.
OINSTALL UPSTREAM SCREENED DIVERSION PUMP. PUMP SHALL, AT A MINIMUM, BE A 6 INCH GAS POWERED TRASH PUMP,
SUFFICIENT TO HANDLE EXPECTED STREAM FLOWS OF 0.5 TO 3 CUBIC FEET PER SECOND INCLUDING FLEXIBLE PIPE
SYSTEM.
OSELECT DISCHARGE POINT DOWNSTREAM OF IMPACTED AREA TO AVOID EROSION. LINE DISCHARGE AREA WITH VISQUEEN
OR EQUIVALENT TO DISSIPATE FLOW ENERGY AND PREVENT CHANNEL SCOUR.
10 INSTALL UPSTREAM COFFERDAM WITH LOW POINT ALIGNED WITH CENTER OF ACTIVE CHANNEL. COORD LOCATION WITH
TEMPORARY STREAM CROSSING.
11 INSTALL DOWNSTREAM COFFERDAM BELOW IMPACTED AREA.
12 COMPLETE ALL IN WATER WORK, GRADE SITE AND INSTALL COIR LOGS OR COIR BLANKET WHILE CHANNEL IS DE -WATERED.
WORK SHALL BE COMPLETED AFTER INSTALLATION OF PIPELINE AND DURING REMOVAL OF TEMPORARY STREAM
CROSSING.
13 WHERE DEWATERING PIPE CROSSES EQUIPMENT CROSSING OR INTERFERES WITH CONSTRUCTION, BURY PIPE IN A
TRENCH AND COVER WITH STEEL PLATES.
14 USE HIGH VISIBILITY FENCING TO DELINEATE IN -STREAM LIMIT OF WORK.
15 PIPE BEDDING AND BACKFILL PER CITY STD PLAN 405, NATIVE BACKFILL WHERE INDICATED.
PURPOSE: Restore stream KEY NOTES FOR PROPOSED: East Renton Lift Station
affected by temporary equipment STREAMFLOW DIVERSION Elimination — remove existing pump station
crossing and pipeline trenching. AND TRENCH BACKFILL and install gravity sewer line
DATUM: NAVD 1988 IN: Section 14, Township 23, Range 5 East
SITE LOCATION ADDRESS: COUNTY: King STATE: WA
In and adjacent to Maplewood Park,
King County and City of Renton, SHEET: 4 of 8
Washington DATE: July 2011
ripe N—: anwtuw_temp-equipmencurossing.ai,—ne wasi-- �.......i uNic u.a urvHicv: uaiu ii i
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••••••••••••O.O••••N••••••••sq ••a•••e®ep ep ••aO s•e•sO s•s • O.O• e0 O O+.O
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TEMPORARY STREAM
CROSSING
O 00 > AInC-05
(p -
< m
SCALE: 1/2" = 1'-0"
FILE: 8235C70-C-08
5
COARSE
AGGREGATE
1/2• DIA OF PIPE OR AS
Oj
•C 3 N
NEEDED 70 SUPPORT
< Z1
EXIST GRADE
LOADS, WHICHEVER IS
ER
?
N X 3
N
=Fn
See Sheet 6 for Key Notes.
0 0 0
0
0 0 0 0
0 0
0 —
w
m
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0
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00 00
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m w
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C SECTION
=III— — — i i_
5 J I In I Ill I Inll l lm lml l lml l ml ICI .
TEMPORARY 8"0 PIPE
CULVERT
m
S
Mitigation Plan for enlarged drawings.
SCALE: 11/2•=,w•
O
FILE: 8235C10-C-08
KEY NOTES:
11 TEMPORARY BYPASS PUMPING MANHOLE. MAX
NOISE OF TEMPORARY BYPASS SYSTEM SHALL BE
45 dBa AT NEAREST RESIDENTIAL PROPERTY LINE.
FIELD VERIFY DIAMETER OF MANHOLE.
OLOCATION AND DATA FOR EXISTING MANHOLE IS
BASED ON CITY OF RENTON GIS DATA AND IS
APPROXIMATE. CONTRACTOR TO FIELD VERIFY.
O CHANNEL WITH CONCRETE. CHANNEL HEIGHT = 12
INCHES.
O4 BYPASS PUMPING DISCHARGE LOCATION. ROUTE
PIPING TO INVERT OF EMERGENCY STORAGE
WELL. TEMPORARILY SUPPORT PIPING AS READ.
OCONSTRUCTION OF TEMPORARY STREAM
CROSSING IS PROVIDED TO FACILITATE
EQUIPMENT ACCESS ALONG PIPELINE ALIGNMENT.
CONTRACTOR TO INSTALL PER GENERAL DETAILS
SHOWN ON THE DWGS AND PER BEST
MANAGEMENT PRACTICES. SUBMIT TEMPORARY
STREAM CROSSING TO ENGINEER FOR APPROVAL
PRIOR TO INSTALLATION. REMOVE ALL MATERIALS
FOR TEMPORARY STREAM CROSSING PRIOR TO
STREAMBANK RESTORATION.
OCOMPACT CSBC AND CSTC TO 95% MDD PER ASTM
D 1557.
OCOMPACT HMA TO AT LEAST 91% OF ITS MAXIMUM
THEORETICAL SPECIFIC GRAVITY (RICE DENSITY).
O8 CONTRACTOR TO COORDINATE WITH LOCAL HOA
FOR STORMWATER DETENTION POND ACCESS.
OTEMPORARY BYPASS PIPING. CONTRACTOR TO
ROUTE ABOVE GROUND AND SUPPORT AS
REQUIRED.
10 SEE STREAM DEWATERING PLAN FOR COFFERDAM
DETAILS. ADD VISQUEEN SHEET OR EQUIVALENT
TO FUNNEL STREAM FLOW.
11 VISQUEEN SHEET OR EQUIVALENT AT OUTLET OF
CULVERT.
12 EXTEND CLSM TO 5 FEET OUTSIDE OF STREAM.
1 g INSTALL CONCRETE CUT-OFF WALL AT END OF
CLSM.
PURPOSE: Restore stream
affected by temporary equipment
crossing and pipeline trenching.
DATUM: NAVD 1988
KEY NOTES FOR
TEMPORARY CROSSING
SITE LOCATION ADDRESS:
In and adjacent to Maplewood Park,
King County and City of Renton,
Washington
PROPOSED: East Renton Lift Station
Elimination — remove existing pump station
and install gravity sewer line
IN: Section 14, Township 23, Range 5 East
COUNTY: King STATE: WA
SHEET. 6 of 8
DATE: July 2011
INSTALL ROL
AND WASH
DEPTH OF 1,
GRADE
BACKFILL ONLY
CLSM PER W
SECTION 2-0!
NATIVE SOIL
H BACKFILL STREAM AT CROSSING
DETAIL (TYP)
NTS
See Sheet 5 for pipeline trench location. See Sheet 4 for trench backfill Key Notes.
PURPOSE: Restore stream
TRENCHED PIPELINE
PROPOSED: East Renton Lift Station
affected by temporary equipment
CROSSING — PLAN AND
Elimination — remove existing pump station
crossing and pipeline trenching.
SECTION VIEWS
and install gravity sewer line
DATUM: NAVD 1988
IN: Section 14, Township 23, Range 5 East
SITE LOCATION ADDRESS:
COUNTY: King STATE: WA
In and adjacent to Maplewood Park,
King County and City of Renton,
SHEET: 7 of 8
Washington
DATE: July 2011
0
15 30
Scale in Feet
N
7
KEY
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FORESTED BUFFER ENHANCEMENT IS]pe
ivLMTING ZONE +7
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x.•nnne wm. common Nam. 'Tyw swanv w.ne+wm«r
sw<n1 a.rc.eibn.
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Sa.n0lrc None CDmmonn.rn. IT- Spacing I pbnl Wm Wr ISO i. M•truslbn.
Shrub ,••: .•-,
monama •er go..•
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IT— Ara (SQuare r«tr +zss7
Planting Zone 3 Stream Bank Restoration
5<NnMi<N•m•
Common Wma TTpa
Spacing PIan1 .LmDar Sp•Nn ms.rumions
9MuG• _
pit
1.r �C ; $aX^ ;.;.fi
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LpnYaaMcea
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S4tia�wN
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'd
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61
T yPr<a le<wr. !axl 202
Planting Zone 4: Seed Mix
9ol•nlGl tHme
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%Ppr. S..p %1 ... .I..
F. -a rwra L. asp. —1.
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43.78
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94
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See Appendix A of Stream and Buffer Mitigation Plan for complete planting plan.
PURPOSE: Restore stream STREAMBANK PROPOSED: East Renton Lift Station
affected by temporary equipment RESTORATION Elimination — remove existing pump station
crossing and pipeline trenching. and install gravity sewer line
DATUM: NAVD 1988 SITE LOCATION ADDRESS: In and adjacent to Maplewood Park, IN: Section 14, Township 23, Range 5 East
King County and City of Renton, COUNTY: King STATE: WA
Washington SHEET. 8 of 8
DATE: July 2011
w 5309 Shilshole Avenue NW www.esassoc.com
�A. F Suite 200
Seattle, WA 98107
206.789.9658 phone
206.789.9684 fax
August 3, 2011
Mr. David Christensen
City of Renton Public Works
1055 S. Grady Way
Renton, WA 98057
Subject: East Renton Lift Station Elimination Project
Biological Assessment Letter of "No Effect"
Dear Mr. Christensen:
ESA has prepared this assessment to address effects on federally listed species under the jurisdiction of the
National Marine Fisheries Service (NMFS) and the U.S. Fish and Wildlife Service (USFWS) resulting from the
East Renton Lift Station Elimination Project. The City of Renton Public Works Department is proposing to
remove the existing East Renton Lift Station and install a new gravity sewer line to serve utility customers in the
Maplewood Park area in Renton and King County, Washington. The project requires a Section 404 permit from
the U.S. Army Corps of Engineers, which is the federal nexus.
ESA biologists Sara Noland, Rosemary Baker, and Steve Krueger evaluated streams, wetlands, and wildlife
habitat on the East Renton Lift Station site on April 29, May 5, May 7, May 8, and June 19, 2009; and March 29
and March 31, 2011. The site visits were conducted to evaluate habitat and potential effects of the proposed
action upon federally listed species potentially occurring in the project area. Representative photos taken during
the site visits are provided in Attachment 1. Figures illustrating the project area are provided in Attachment 2.
Project Location and Action Area
The project is located in the City of Renton and an adjacent portion of unincorporated King County in Section 14,
Township 23 West, Range 5 East. The site is on a plateau on the north side of the Cedar River valley, within
Water Resource Inventory Area (WRIA 8) — Cedar/Sammamish River drainage. The project is located within the
Madsen Creek -Cedar River subbasin (6`h field hydrologic unit code 171100120400). The northern boundary of
Maplewood Park corresponds with the Renton city limits (Figure 1). The East Renton Lift Station is located
within city limits north of the park. The new gravity sewer pipe corridor extends south from the lift station site
through the County -owned park to an existing sewer line within 1481h Place SE south of the park.
Maplewood Park is an approximately 45-acre King County park that is surrounded by residential development.
Maplewood Heights Elementary School lies adjacent to the northwest side of the park. Developed recreation
facilities including picnic areas and playfields are located in the southwest portion of the park; however the
gravity sewer line corridor is undeveloped except for unpaved foot trails. One stream (Stewart Creek) crosses the
gravity sewer line corridor, and several wetlands are located near the corridor (Figure 2).
The terrestrial portion of the action area for the project includes areas within approximately 1 mile of proposed
project elements. This represents the area in which increased noise and human presence during construction may
cause disturbance, in a park surrounded by roadways and residential development. The aquatic portion of the
action area includes the portion of Stewart Creek within Maplewood Park and extending downstream 100 feet.
Mr. David Christensen
August 3, 2011
Page 2
This represents the maximum distance that sedimentation from the project would affect project area streams due
to the absence of inwater work and application of appropriate BMPs (Figures 3 and 4). Wetlands within the park
that are associated with Stewart Creek are also part of the aquatic action area.
Stewart Creek is a tributary of the Cedar River. Stewart Creek enters the northern end of Maplewood Park via a
plastic culvert, and exits the southern end of the Park via a grated concrete culvert that is part of the storm drain
system south of Maplewood Park. Neither King County nor the City of Renton has mapped the upper part of
Stewart Creek where it flows through Maplewood Park. The City of Renton stormwater mapping shows Stewart
Creek as an open channel beginning approximately 1,500 feet (0.3 mile) south of Maplewood Park. The stream is
mapped as flowing through a steep ravine along the west side of 154 h Place SE for approximately 0.75 mile
before joining the Cedar River on the north side of SE Jones Place (Figures 3 and 4).
WDFW (2011) data does not indicate salmonid use of the Stewart Creek, and the quality and quantity of aquatic
habitat within the action area, as well as extensive downstream storm drain system, would likely preclude the
presence of Chinook salmon, bull trout, or steelhead. To assist in verifying this assumption, ESA staff met with
WDFW biologist Larry Fisher on March 23, 2011, to discuss the potential for the onsite streams to support fish.
Based on guidance from WDFW, ESA fisheries biologist Steve Krueger used minnow traps and visual
observations to evaluate fish use of Stewart Creek. As expected, no fish were observed in the stream (ESA,
2011). The nearest waterbody supporting listed fish species is the Cedar River, which in addition to listed bull
trout, Chinook salmon and steelhead, also supports other salmonids including coho salmon, sockeye salmon, and
winter steelhead (WDFW, 2011).
Potential Presence of Listed Species/Critical Habitat
Both NMFS and USFWS provide lists of threatened and endangered species under their jurisdiction
(Attachment 3). The potential presence of listed species within the project area was further evaluated by
reviewing Washington Department of Fish and Wildlife (WDFW) Priority Habitats and Species data. Listed
species and critical habitats that may occur in the vicinity of the proposed project are shown in Table 1. Other
species shown on the species lists in Attachment 3 are unlikely to occur in the project vicinity because these
species were either not historically distributed within the action area, and/or the action area does not contain
suitable nesting or foraging habitat to support these species. For example, no mature forested areas occur within
the project area containing habitat elements suitable for either northern spotted owl (Strix occidentalis) or
marbled murrelet (Brachyramphus marmoratus) species. Therefore, species without suitable habitats in the
project area will not be addressed in this report.
There is designated critical habitat for Puget Sound Chinook salmon (NMFS 2005) and Coastal -Puget Sound bull
trout (USF WS 2010) within the Cedar River, over one mile downstream of the action area. Critical habitat for
steelhead has not been proposed nor designated. While critical habitat has been designated for other listed species
within King County (e.g., marbled murrelet and northern spotted owl), neither these species, nor associated
critical habitat, occurs within either the project vicinity or the action area. Therefore, critical habitat for these
species will not be addressed further in this report.
f
Mr. David Christensen
August 3, 2011
Page 3
Table 1. Listed Species Potentially Present in Project Area
Species Name
Federal Listing
Agency with
Critical Habitat
Status
Jurisdiction
within Project
Vicinity?
Chinook salmon Puget
Threatened
NMFS
Yes - Cedar River
Sound Evolutionarily
Significant Unit (ESU)
Steelhead Puget Sound
Threatened
NMFS
No
Distinct Population
Segment (DPS)
Bull trout Coastal -Puget
Threatened
USFWS
Yes - Cedar River
Sound DPS
Project Description
The East Renton Lift Station is just under 10 years old. It is located north of Maplewood Park near the end of the
NE 2nd Court cul-de-sac (Figure 2). The lift station serves to pump sewage from nearby residential
neighborhoods (Maplewood Estates, Parkside Court, Shy Creek, Liberty Ridge, and others for a service area of
approximately 430 acres) to the gravity sewer system located near NE 4th Street. The City of Renton (City)
prefers to serve customers via a gravity sewer pipeline, rather than a lift station whenever feasible. A gravity
system eliminates electricity costs for pumping and equipment maintenance, which greatly reduces annual
Operation and Maintenance (O&M) costs. Based on survey data, conversion to a gravity system is possible at this
location by installing a new pipeline crossing through an undeveloped portion of Maplewood Park and connecting
to the Briar Hills Division No. 4 sewer system to the south.
The new pipeline alignment (Figure 5) will consist of approximately 1,030 linear feet of 12-inch-diameter and 15-
inch-diameter pipe. Of this total, approximately 270 feet would be located within existing paved or gravel
surfaced roads, and 760 feet within vegetated areas (Maplewood Park). The new pipe will be installed using open
trenches. Trench excavations ranging from 3 to 10 feet deep would be required to maintain the desired gradient
along the alignment. In addition, the existing lift station structure will be demolished.
The following general sequence of construction activities is anticipated for pipe installation.
1. Survey and mark construction limits.
2. Install temporary erosion and sediment control (TESC) measures in 148th Place SE.
3. Remove existing 8-inch-diameter gravity sewer and existing 48-inch-diameter manhole, and install 15-
inch-diameter gravity sewer and new 60-inch-diameter manhole in 148 h Place SE.
Mr. David Christensen
August 3, 2011
Page 4
4. Confirm operation of new 15-inch-diameter gravity sewer by television inspection, air test and inspection
of manholes with channeling.
5. Relocate fencing to provide equipment access at East Renton Lift Station.
6. Clear and grub 30-foot-wide corridor and install remaining TESC measures for installation of the gravity
pipelines.
7. Temporarily divert stream flow (Stewart Creek) by bypass pumping and install temporary stream
crossing.
8. Install 15-inch-diameter gravity sewer in Maplewood Park.
9. Install 12-inch-diameter gravity sewer between existing manholes in existing gravel access area north of
the park.
10. Confirm operation of new 15-inch and 12-inch-diameter gravity sewer by television inspection and air
test.
11. Install temporary wastewater bypass pumping systems and test.
12. Perform improvements to existing manholes north of the park and fill existing 12-inch-diameter gravity
sewer.
13. Inspect manhole channeling.
14. Decommission bypass pumping systems and commence gravity sewer operation.
15. Remove temporary stream crossing, and revegetate work areas within the park.
16. Decommission and demolish existing lift station facilities.
17. Construct miscellaneous site improvements at East Renton Lift Station site.
18. Perform asphalt overlay in 148th Place SE.
Within Maplewood Park, the construction corridor to be cleared for the project would be 30 feet wide (Figure 5).
The total area of clearing and grading within the park is 21,948 square feet (0.5 acre). Within the 30-foot-wide
corridor; the pipeline trench would be up to 10 feet wide, with the rest of the corridor width used for equipment
access and material stockpiling. Following construction, the trench would be backfilled and the construction
areas recontoured to match adjacent grades.
Mr. David Christensen
August 3, 2011
Page 5
Impact Assessment
Construction Impacts
Construction would result in a temporary increase in noise and human disturbance within the action area.
Approximately 0.5 acre of vegetation would be cleared, requiring the use of equipment such as chainsaws,
bulldozers, graders, and trucks. The new sewer pipeline would be installed in an open trench, also requiring
heavy equipment such as excavators and trucks. One crossing of Stewart Creek, a non -fish -bearing stream,
would be required. Construction activity would last for up to four months. In -water work in Stewart Creek would
follow timing restrictions required by the Washington Department of Fish and Wildlife (WDFW).
Heavy equipment and construction worker activity have the potential to temporarily disturb wildlife, but no listed
terrestrial species or their habitats are located in the action area. No direct wetland impacts (filling or dredging)
will occur. A temporary crossing of Stewart Creek will be installed to allow equipment access from both ends of
the work area (north and south) (Figure 5). This temporary stream crossing will be located adjacent to the new
pipeline crossing of the stream to minimize disturbance of the streambed and banks. The temporary crossing will
consist of riprap or quarry spall placed in the stream channel. A culvert placed under the riprap will carry
streamflow through the work area until construction is complete.
The temporary stream crossing would require approximately 30 CY of temporary fill (riprap) within the stream
channel and adjacent streambanks. Approximately 5 CY of material would be excavated from the streambed to
install the pipeline; a similar amount of backfill would be placed in the trench after the pipe is installed. Together
the temporary crossing and pipeline crossing would temporarily disturb up to approximately 437 square feet of
the stream channel. Following construction and pipeline installation, the temporary crossing will be removed, and
the streambed and banks will be restored and revegetated.
Clearing of vegetation within the pipeline corridor, trenching to install the pipe, and other construction activities
will disturb soils and could cause minor erosion and sedimentation. Increased erosion and sedimentation could
result in a short-term increase in turbidity in the onsite stream or wetlands. However, with the implementation of
the following erosion control measures and construction best management practices (BMPs), these impacts would
be avoided and minimized as much as possible:
• As part of the project's Temporary Erosion and Sediment Control (TESC) plan, install silt fence along the
construction corridor to protect nearby wetlands from sedimentation.
• Temporarily bypass the onsite stream prior to trenching the pipe across the stream or installing the
temporary stream crossing for equipment.
• Place straw, mulch, or commercially available erosion control blankets in areas that require additional
protection.
• Revegetate disturbed areas with native trees and shrubs. as soon as possible after completion of
construction.
• Maintain construction equipment in good working order, free of leaks of fuel, hydraulic fluids, or other
chemicals.
Mr. David Christensen
August 3, 2011
Page 6
• Keep fueling and equipment maintenance areas within designated staging areas and away from streams
and wetlands.
• In the unlikely event that a construction accident or spill releases contaminants into waterways or the
surrounding environment, BMPs (such as oil booms and adsorbent pillows) would be employed and
utilized to contain and minimize the spill.
• Route all water from trench dewatering to the existing sanitary sewer system in accordance with permit
requirements.
Stewart Creek will be temporarily diverted to protect water quality and aquatic life during in -stream work.
Cofferdams will be placed in the stream channel, both upstream and downstream of the work area, encompassing
the locations of both the temporary equipment crossing and the adjacent pipeline trench. Streamflow will be
pumped from above the upstream cofferdam into a temporary flexible pipe. Flows will be discharged from the
flexible pipe back to the stream, at a location downstream of the lower cofferdam. Temporary outlet protection
will be employed to minimize or eliminate sedimentation at the diversion outfall. The temporary equipment
crossing will then be constructed while the streamflow is being diverted by the pump. A culvert will be installed
through the temporary equipment crossing, extending from the upper cofferdam to a point downstream of the
lower cofferdam. Once the culvert is in place, flows will be diverted through the culvert and the pump will be
removed. The temporary equipment crossing and culvert will remain in place throughout the construction period.
This will serve to isolate the work area from streamflows and minimize sedimentation in the stream. The
quantities of streamflow to be diverted around the work area are unknown. However, the City intends to
construct the project during the dry season, during low flows, and in -water work will comply with WDFW HPA
requirements, including all work window restrictions.
The proposed project will result in some clearing within the riparian buffer of Stewart Creek. However, based on
the limited amount of riparian disturbance and location of the disturbance at a distance from the Cedar River, no
riparian functions that could affect fish present downstream (in the Cedar River) would result. Cedar River
riparian functions, including LWD recruitment, sediment filtration, leaf litter production, and shade/stream
temperature functions, will be maintained.
Operational Impacts
Following construction, no additional soil disturbance or erosion is anticipated during the operation of the project.
The pipeline would be accessed from the manholes at the north and south ends of the park property for
maintenance. The project would create only three square feet of new impervious surface and would not increase
runoff from the site following construction.
Determinations of Effect
The proposed action is anticipated to have no effect on Puget Sound ESU Chinook salmon, Puget Sound DPS
steelhead, or Coastal/Puget Sound DPS bull trout for the following reasons:
0 Stewart Creek within Maplewood Park does not support fish;
Mr. David Christensen
August 3, 2011
Page 7
• The nearest documented habitat for listed salmonid species is within the Cedar River, approximately 1
mile downstream from the project site and action area;
• In -water work in Stewart Creek will occur during WDFW approved work windows and during low flows;
• Stewart Creek streamflows will be diverted around the work area during construction;
• Construction will incorporate stormwater and erosion control BMPs to protect water quality;
• The stream bed and banks of Stewart Creek will be restored and revegetated following construction; and
• The project will create only three square feet of new impervious surface and will not increase surface
runoff to Stewart Creek once construction is complete.
The project would have no effect on critical habitat for Puget Sound ESU Chinook salmon or CoastaUPuget
Sound DPS bull trout in the Cedar River, for the same reasons listed above.
Essential Fish Habitat
In compliance with the Magnuson -Stevens Fishery Conservation and Management Act, Essential Fish Habitat
(EFH) was assessed for the proposed project. The project action area contains designated EFH for federally
managed Pacific salmon. Potential effects to Pacific salmon EFH, including Chinook and coho salmon habitat,
are similar to that discussed in the body of this letter. It was determined that the project will have no adverse
effect on EFH for Pacific salmon.
It is our understanding that this assessment satisfies the City of Renton's responsibility under Section 7(c) of the
Endangered Species Act at this time. We are prepared to reevaluate potential project impacts if new species are
listed or if the project description changes, resulting in project -related effects that were not previously described
in this document.
Please contact me if you have any questions or concerns about the proposed project.
Sincerely,
Sara Noland
Project Scientist
Attachments:
1. Site Photos
2. Figures
3. Species Lists
Mr. David Christensen
August 3, 2011
Page 8
References
ESA Adolfson. 2011. East Renton Lift Station Wetland, Stream and Wildlife Study. June 2009; revised July
2011.
USFWS (U.S. Fish and Wildlife Service). 2011. U.S. Fish and Wildlife Service Critical Habitat Portal.
Available: http://criticalhabitat.fws.gov/crithab. Accessed July 2011.
WDFW (Washington Department of Fish and Wildlife). 2009. SalmonScape online mapping. Available:
http://wdfw.wa.gov/mapping/salmonscape/.
WDFW (Washington Department of Fish and Wildlife). 2011. Priority habitats and species database- online
interactive map. Available: http://www.wa.gov/mapping/phs. Accessed July 2011.
ATTACHMENT 1: SITE PHOTOS
ATTACHMENT 2: FIGURES
SOURCE: King County, 2009 (2005) East Renton Lift Station. 209036
Figure 1
Vicinity Map
King County, Washington
East Renton Lift SWb-209036
SOURCE: ESA Ad,fton. 2009: PACE Engineers. Inc.: King County. 2009 (2005) Figure 2
Streams, Wetlands, and Buffers
Maplewood Park, King County, WA
Structures
Conveyance
Flow Control Facility
Renton
Renton
Renton
e Inlet
Pp.
® Pond
e Type 1
—>— Covert
db Tank
O Type 2
Private
® Vau:t
taua
— Pipe
Private ('P' Prefix)
H- Pump Station
— Culvert
® Pond
Private ('P' Pmfx)
King County
tM Tank
• Inlet
Pipe
a Vauu
• Type 1
—• Culvert
King County
• Type 2
WSOOT
to Pond
0 Vault
....•. Pipe
db Tank
King County
Culvert
Miscellaneous
• el
Wei
Other
4 Renton Limits
• T, pe 1
Channel
Q —
O Type 2
'"^-"" Ditrh
Oumler Section
WSDOT
""' Fb
Parvo—Sp-
9 Type 1
Flow Control
- ---- 10e Cmio,r
O Type 2
a Infilt,mi.
s elosyrale
SOURCE: City of Rmtm, 2009; ESA, 2011.
F7NW - 14T 23N R05E NW 114
m
U)
m
a'
G7NW - 23T 23N R05E NW 1/,
I
nr u-e l�, atT
,�e�.� Surface Water Utility
r 1- I
Asset Inventory
2 sa �rW T'iap'� 5.r
_ �}r May 2009
k--r-'
y 0 150 300 600
I
Feet
r , ' untarylnfam•:Io .M bema:,aur� novae 14T 23N R05E SW 1 /4
mmpi:eC from numerous spumes. I! is Ne oast
Inrormall vi awibblat V.:[ e.n• and stood be
used tar general auidanca only. 4 Ciry ofRenlon
Is ble for net r•spcn[Ierrors or art'e[['ans. Wean mis
iniormetion is used :or Nanning, design, •ndlor
gee ppr, .•, p ar, era tp naa ven y :ms 5314
ii�tonnelipn. F 7 W
East Renton Lift Station. 209036
Figure 3
Surface Water Utility Asset Inventory
Renton, Washington
East Renton Lift Station. 209036
SOURCE: King County, 2009 (2005), USFWS, 2007 (NW) Figure 4
NWI and King County Wetland Mapping
King County, Washington
BRIAR HILLS
No. 4
tl
1.
W
.... ......
—4. r7in—
lfll
..-T
u�asn.e,
- — — — — —
— — —
no—
0 20 40 80
iV Scale in Feet I17. BUFFER IMPACT AREA (21,948 SF/U.5 ACRE)
SOURCE: City at Penton; Canollo, 2011.
. .. ... ... ... .... ... ... ... ...
... . . .....
MAPLEWOOD
ESTATES
=nc-
East Renton Lift Station 209036
Figure 5
Site Plan
King County, Washington
ATTACHMENT 3: SPECIES LISTS
LISTED AND PROPOSED ENDANGERED AND THREATENED SPECIES AND CRITICAL
HABITAT; CANDIDATE SPECIES; AND SPECIES OF CONCERN
N KING COUNTY
AS PREPARED BY
THE U.S. FISH AND WILDLIFE SERVICE
WASHINGTON FISH AND WILDLIFE OFFICE
(Revised December 15, 2010)
LISTED
Bull trout (Salvelinus confluentus) — Coastal -Puget Sound DPS
Canada lynx (Lynx canadensis)
Gray wolf (Canis lupus)
Grizzly bear (Ursus arctos = U. a. horribilis)
Marbled murrelet (Brachyramphus marmoratus)
Northern spotted owl (Strix occidentalis caurina)
Major concerns that should be addressed in your Biological Assessment of project impacts to
listed animal species include:
Level of use of the project area by listed species.
2. Effect of the project on listed species' primary food stocks, prey species, and
foraging areas in all areas influenced by the project.
3. Impacts from project activities and implementation (e.g., increased noise levels,
increased human activity and/or access, loss or degradation of habitat) that may
result in disturbance to listed species and/or their avoidance of the project area.
Castilleja levisecta (golden paintbrush) [historic]
Major concerns that should be addressed in your Biological Assessment of project
impacts to listed plant species include:
Distribution of taxon in project vicinity.
2. Disturbance (trampling, uprooting, collecting, etc.) of individual plants and
loss of habitat.
Changes in hydrology where taxon is found.
DESIGNATED
Critical habitat for bull trout
Critical habitat for the marbled murrelet
Critical habitat for the northern spotted owl
PROPOSED
Revised critical habitat for bull trout
CANDIDATE
Fisher (Martes pennanti) — West Coast DPS
North American wolverine (Gulo gulo luteus) — contiguous U.S. DPS
Oregon spotted frog (Rana pretiosa) [historic]
Yellow -billed cuckoo (Coccyzus americanus)
SPECIES OF CONCERN
Bald eagle (Haliaeetus leucocephalus)
Beller's ground beetle (Agonum belleri)
Cascades frog (Rana cascadae)
Hatch's click beetle (Eanus hatchi)
Larch Mountain salamander (Plethodon larselli)
Long-eared myotis (Myotis evotis)
Long-legged myotis (Myotis volans)
Northern goshawk (Accipiter gentilis)
Northern sea otter (Enhydra lutris kenyoni)
Northwestern pond turtle (Emys (= Clemmys) marmorata marmorata)
Olive -sided flycatcher (Contopus cooperi)
Pacific lamprey (Lampetra tridentata)
Pacific Townsend's big -eared bat (Corynorhinus townsendii townsendii)
Peregrine falcon (Falco peregrinus)
River lamprey (Lampetra ayresi)
Tailed frog (Ascaphus truei)
Valley silverspot (Speyeria zerene bremeri)
Western toad (Bufo boreas)
Aster curtus (white -top aster)
Botrychium pedunculosum (stalked moonwort)
Cimicifuga elata (tall bugbane)
Endangered Species Act Status of West Coast Salmon & Steelhead
((ipdawd Art, do. 201 r)
�
�'
Endangered
Species
ESA Listing Action
m a
r f„„, Species Act
xfi
Under Review
t.:.
.,. Lrstin Sttitusr
s a,,. .,
I
Snake River
Sockeye Salmon
(Oncorhynchus
nerka)
�-
3
Ozette Lake _ _ _ __ r • t)''
Baker River W m,.-_v._..._f Nor {Varromed
4
O_kanogan.River
5
Lake Wenatchee t Nor IVarmnied
6
Quinalt Lake Not Wormnted
... ...
7
........._........ _.._...... __. .....__. _. ...____._ . __....... l _ .....I_.__ ..... _.. _.........
( Lake Pleasant i No/ Rarmnted
8
Sacramento River Winter -run
Chinook Salmon
9
Upper Columbia River Spring -run
.. _-. _........ ....._.. ............:
(O. tshmvytscho)
10
Snake River Spring/Summer-run
1 I
Snake River Fall -run $Jutufehtii
12
Puget Sound
13
Lower Columbia River r el
14
Upper Willamette River
15
Central Valley .Spring -run
16
California Coastal
17
Central Valley Fall and Late .Fall -run _..... .., p.is'ojCnncerq
18
Upper Klamath -Trinity Rivers Nw {Vormmed
19
Oregon Coast .Not Warmmed
....._. __..... __......._ ___.. _.._.__... ._.._. ...____............
20
Washington Coast , rVa( lVarrarrled
21
Middle Columbia River spring -run Nat Warranted
22
_Upper Columbia River summer/fall-run Not Wurramed
23
Southern Oregon and Northern California Coast i Nor {Varranred
24
Deschutes River summer/fall-run Not {l urmmed
25
Central. Califomia Coast
_._. _.. ...
Coho Salmon
26
t.
I Southem Or egon/Northern CaL_fomia, _ _ _ . raeateaean`
_. _ _-
(O. kisulch)
27
Lower Columbia River 7iriEa : Critical habitat
28
j Oregon Coast _ e`
29
Southwest Washington (Indeiermmed
30
Puget Sound/Strait of Georgia __ _ S� c er aj Bern
31
Olvm is Peninsula Not Warranted
32
I Hood Canal Summer inn terk� rs1
7S.1-on_
33
Columbia Ri er h
34
i
Puget So_und/Sirait of Georgia Nor {Yorm_nted_
35
N4rr Warmmed
36
-Southern California
Steelhead
37
_Upper Columbia River mm-
(O. mykiss)
38
Central Cali forma Coast
39
South Central Cali forma Coast
40
Snake River Basin
41
_Lower Col umbia River
42
California Central Valley.
43
Upper Willamette River
44
Middle Columbia River
45
Northern California
46
Oregon Coast - ts�.SPe fC,nn�cerq
47
Southwest Washington Val Warmmed
48
Olympic Peninsula I Nor {Vormnied
Puget Sound
Critical habitat
49
50
Klamath Mountains Province i Nol Warranted
Pink Salmon
(O. gorbuscho)
51
Even -year_, -_-, .,......_._,__,.,........„_-,.. .,_ _ Nor Warmmed
-----
52
Odd -year I_{Varronled
1 The ESA defines a "species" to include any distinct population segment of any species of vertebrate fish or wildlife. For Pacific salmon, NOAA
Fisheries Service considers an evolutionarily significant unit, or "ESU," a "species" under the ESA. For Pacific Steelhead, NOAA Fisheries Service
has delineated distinct population segments (DPSs) for consideration as "species" under the ESA.
Web date: 03/25/2011
AFFIDAVIT FOR APPLICATION
King County FORM
Department of Development
and Environmental Services
900 Oakesdale Avenue Southwest For alternate formats, call 206-296-6600.
Renton, WA 98057-5212
206-296-6600 M Relay: 711 Print on legal -size (8 % x 14") paper only.
Application number assigned: A11P0005
5126301030, 1523059055, 1423059007,'666903TRCT,
Parcel Number: 4901nanoln
Legal Description:
See attached.
Address of proposed work: Maplewood Park & 148`" Place SE (see attached Figure) ❑ address not assigned -yet
(if not yet assigned, check box at right)
Related Permits or Pre-App number: Al 1 P0005
Descriptive summary of proposed work:
i.
The project will convert a portion of the City of Renton sewer system from a pumped system to a gravity sewer
system. This involves installation of approx. 1,030 feet of new sewer pipeline (-760 feet through Maplewood Park)
and elimination of an existing lift station north of the park. The pipeline will be installed using open trenches.
Valuation of project: $480,000
Check all applicable items
This is: ® New Construction
❑ Sign
This is: ❑ Single Family
❑ Retail/Office
❑ Remodel/Addition
❑ Tenant Improvement
❑ Duplex or Multi Family
❑ Agricultural
Contractor's License #: to be determined
Expiration Date: to be determined
❑ Accessory Structure
❑ Other
❑ Commercial/Industrial
® Other public utility
Property Owner: King County Parks Phone: 206-296-8687
Mailing Address: 201 S. Jackson St., # 700 City: Seattle
Dave Christensen, Renton
Applicant Name: Public Works Phone: 425-430-7212
E-mail:
State: WA Zip: 98104-
E-mall: Dchristen@Rentonwa.gov
Mailing Address: 1055 S. Grady Way City: Renton State: WA Zip: 98057
Dave Christensen,
Contact/Agent Name: Renton Public Works Phone: 425-430-7212 E-mail: Dchristen@Rentonwa.gov
Mailing Address: 1055 S. Grady Way City: Renton State: WA Zip: 98057
Critical Area Compliance:
The undersigned applicant declares:
1. That the applicant is coillpetent to be a witness herein;
2. That the applicant is the applicant for the above project;
3. That to the best of the applicant's knowledge, the critical areas on the development proposal site have not been
illegally altered; and
4. That the applicant has not previously been found in violation of critical areas regulations for any property in King
County, or alternatively, that if there have been any violations, such violations have been cured to the satisfaction of
King County.
I am submitting for a permit authorized by the international building, residential, fire, or mechanical codes and in anticipation of
having it approved or approved with conditions I have read the following statement and understand that failure to comply with
all conditions once construction is begun may necessitate an immediate work stoppage until such time as compliance with the
stipulated conditions is attained. I certify that I have made a diligent inquiry regarding the need for concurrent state or federal
permits to engage in the work requested under this building permit, and no such permits are required or I will have obtained the
required permits prior to issuance of this permit. I understand that the granting of this permit shall not be construed as.
satisfying the requirements of other applicable Federal, State or Local laws or regulations. In addition I understand and agree
that this permit does not authorize the violation of regulations. In addition, I understand and agree that this building permit does
not authorize the violation of the Endangered Species Act as set forth at 16 U.S.C. § 1531-1543, including the prohibition on
the "take" of threatened or endangered species. "Take" is defined at 16 U.S.C. § 1532(19). 1 fully understand that it is.my sole
responsibility to determine whether such "take" restrictions would be violated by work done pursuant to this permit, and I
understand that I am precluded by Federal Law from undertaking work authorized by this permit if that work would violate the
"take" restrictions set forth at 16 U.S.C. §1538, 50 C.F.R. §17.21, 50 C.F.R. §17.31, 50 C.F.R. §223 and 50 C.F.R. §224.
1 certify under penalty of perjury and under the laws of the State of Washington the foregoing is true and correct. I further
certify that all easements, deed restrictions, or other encumbrances restricting the use of the property are shown on the site
plans submitted with this application. We (1) have been given authorization from the property owner to obtain this permit. I
accept financial responsibility for all fees associated with this permit or approval and will receive any refunds. Please mail
any refunds to the address above.
Applicant: Dave Christensen
Print Name
Date:
Check out the DDES Web site at www.kingcounty.goy/permits
AffForAppFORMLegal b-aff-app.pdf 03/25/2011 Page 1 of 1
Legal description for Al P0005
East Renton Lift Station Project
Parcel Numbers: 5126301030, 1523059055, 1423059007, 666903TRCT, 1523059230
THE NORTH HALF OF THE NORTHEAST QUARTER OF THE SOUTHEAST QUARTER OF SECTION 15,
TOWNSHIP 23 NORTH, RANGE 5 EAST, W.M., IN KING COUNTY, WASHINGTON;
EXCEPT THE WEST 30 FEET THEREOF;
AND THE NORTH HALF OF THE NORTHWEST QUARTER OF THE SOUTHWEST QUARTER OF SECTION
14, TOWNSHIP 23 NORTH, RANGE 5 EAST, W.M., IN KING COUNTY WASHINGTON;
EXCEPT THOSE PORTIONS OF SAID SECTIONS 14 AND 15 HERETOFORE CONVEYED TO KING
COUNTY BY DEED RECORDED UNDER RECORDING NUMBER 9401060822.
SOURCE: King County, 2009 (2005) East Renton Lift Station. 209036
Figure 1
Vicinity Map
King County, Washington
� � � t StMtn „�•,
/
...... '1H (' Y MCP iF RT"7 V� fytk`
u i -t
I r � _. ✓ � j _...,,�€ '� ' .'� "�" 1:,1 ,yam :r� � � I� . "" ° S• � � � s • `raj':
BRIAR HILLSif
/ ��ii"� � ii / i/ �' � � ' �'•1 s cneev � 'i+ '- rF� �k i' S �' 36
p ,
_..—SI ti ! a`.�,_—�• ' ...!i .� •r �L �r�rtv�r ''u2,g^.fir �, �}.,, 's ,.,(y;.'
�-(% :/ "l IL! " T 4D 1 § t['�c,.„1".]♦ 21 w+u Y
' l �""..
...�P ..1
it f \ j ,,�• � '� z s,�"�
It
II t
z
n.
4
Ii, ; � \ � �/ MNG CntIUIV Wt.n AM)�N).,*nFw,0.„r1 r1 w115
• 0 10 20 40 'I}L\
N Scal9ln Fee, 1 � avu.w000 vr.ax nonruwur
SOURCE: City of Renton; Camllo, 2011.
�^ I
i I
y\
I
I
t .' ..
IIIIIITI
u+j
I� t
1 DI'm
� aEMo�e e
MAPLEWOOD • e.
ESTATES
m0a-T~
iA
\ I?x
\ \
East Renton Lift Station . 209036
Figure 2
Site Plan
King County, Washington
Web date: 06/28/2007
' CERTIFICATION & TRANSFER
King County OF APPLICANT STATUS
Department of Development and Environmental Services
900 Oakesdale Avenue Southwest
Renton, Washington 98057-5212
206-296-6600 TTY 206-296-7217 For alternate formats, call 206-296-6600.
Permit Number: Al P0005
FOR CURRENT OWNER:
I, King County Parks and Recreation Division , (print name) hereby certify that I am an/the
owner of the property which is the subject of this application for permit or approval. If I am not the sole owner of
the property, I certify that I am authorized by any and all other owners of the property to make this certification and
transfer any and all rights I/we have to apply for this permit or approval to the person listed below.
I, therefore certify that City of Renton Public Works (print name) is the
"applicant" for this permit or approval and shall remain the "applicant" for the duration of this permit or approval
unless "applicant' status is transferred in writing on a form provided by this department. By being the "applicant,"
that individual assumes financial responsibility for all fees and will receive any refunds paid.
I certify under penalty of perjury under the laws of the State of Washington that the foregoing is true and correct.
Signature of Owner Date Signed
FOR INDIVIDUALS:
I, (print name) hereby certify that I am the
"applicant" for this permit or approval. I shall remain the "applicant' for the duration of this permit or approval
unless "applicant' status is transferred in writing on a form provided by this department. I accept financial
responsibility for all fees associated with this permit or approval and will receive any refunds. My mailing
address is:
I certify under penalty of perjury under the laws of the State of Washington that the foregoing is true and correct.
Signature of Applicant
OR
FOR CORPORATIONS/BUSINESS ASSOCIATIONS:
I, David Christensen
Date Signed
, (print name) hereby certify that I am an authorized
agent of City of Renton Public Works a corporation or other business
association authorized in the State of Washington and that this business association is the "applicant' for this
permit or approval and is financially responsible for all fees and will receive any refunds paid. This association
shall remain the "applicant' for the duration of this permit or approval unless "applicant' status is transferred in
writing on the form provided by this department. The mailing address of this business association is:
1055 S. Grady Way
Renton, WA 98057
I certify under penalty of perjury under the laws of the State of Washington that the foregoing is true and correct.
Signature of Applicant
Date Signed
CertAndTransferApplicantStatusFORM Ic-cer-trapstat.pdf 06/28/2007 Page 1 of 2
NOTICE TO APPLICANTS: By law, this department returns all engineering and other plans to the applicant. If,
however, you wish to authorize the department to return engineering and other plans directly to the engineer,
architect, or other consultant for the limited purpose of making corrections, please designate below:
® I authorize this department to return plans directly to my consultant(s) for the limited purpose of making
corrections, as designated on this form.
CONSULTANTS:
ler Whitehouse, Carollo Engineers, 1218 Third Ave, Suite 1600, Seattle, WA, 98101
Sara Noland, ESA, 5309 Shilshole Ave NW, Suite 200, Seattle, WA 98107
Check out the DDES Web site at www.kingcounty.goy/permits
CertAndTransferApplicantStatusFORM Ic-cer-trapstat.pdf 06/28/2007 Page 2 of 2
L19
King County
Department of -Development
and Environmental Services
900 Oakesdale Avenue Southwest
Renton, Washington 98057-5212
206-296-6600 TTY Relay 711
General Instructions
Web date: 05/19/2011
CLEARING AND GRADING PERMIT
APPLICATION WORKSHEET
For alternate formats, call 206-296-6600.
Part I of this form must be completed prior to scheduling a pre -application meeting with Land Use Services Division (LUSD). If you
require assistance completing this form, please contact 206-296-6600 and request to speak to a Site Development Specialist. A
completed JARPA or Forest Practices application may be submitted in lieu of completing Part I.
Part II of this form must be completed by DDES staff prior to application.
Part III through VI of this form will be completed by DDES staff after the application has been filed.
PART
Project Name:
East Renton Lift Station
Description of Project:
Location: King County
Street Address: Maplewood Park and 148th Place SE
The project will convert a portion of the City of Renton sewer system from a pumped system to a gravity
sewer system. This involves installation of approx. 1,030 feet of new sewer pipeline (-760 feet through
Maplewood Park, —170 feet in 1481h Place SE, and remainder in City of Renton north of Maplewood Park).
The pipeline will be installed using open trenches. An existing City of Renton lift station north of the park
will be eliminated.
Applicant:
David Christensen, C
Address 1:
1055 S. Grady Way
Address 2:
Renton, WA 98057
Phone No.:
425-430-7212
of Renton Public Works
E-mail: Dchristen @Rentonwa.gov
Owner: King County Parks and Recreation Division
Address 1: 201 S. Jackson St., # 700
Address 2: Seattle, WA 98104
Phone No.: 206-296-8687 E-mail:
Note: If the applicant is other than the owner, authorization from the legal owner must be provided.
Agent: David Christensen, City of Renton Public Works
Address 1: 1055 S. Grady Way
Address 2: Renton, WA 98057
Phone No.: 425-430-7212 E-mail: Dchristen@Rentonwa.gov
PROJECT CHARACTERISTICS
Total Area Cleared/Graded:
Total New Impervious Surface:
Total New Pervious Surface:
0.72
3
C
ac Volume of Excavation: 1,375 c.y.
s.f. Volume of Fill (Exported): 600 c.y.
s.f. Volume of Fill (Imported): 760 c.y.
PROPERTY INFORMATION
Parcel No.: See attached legal description. Current Zoning
Community Plan: n/a Size:
Shoreline Designation: n/a Thomas Guide
Is the property located within any of the following:
Clea rGradingPermitAppWksheetFORM Is-wks-clgr.pdf 05/19/2011
R-4
1.2 acres (work area) ac
Map 656 J2 & J3
Page 1 of 5
a. A vested Plat? ❑ Yes N No If yes, describe:
b. Area subject to clearing restrictions? ❑ Yes N No If yes, describe:
c. Area subject to other property specific development restrictions? ❑ Yes N No If yes, describe:
Is this property enrolled in current use taxation as forest, farm or open space? ❑ Yes N No If yes, describe:
Has a farm plan, rural stewardship plan or forest management plan been prepared for this parcel? ❑ Yes N No If yes, describe:
Are there any native growth, utility or access easements or other encumbrances that may affect development of this property?
N Yes ❑ No If yes, describe:
The project site lies partionally within Maplewood Park and existing utility easements. This area of the park contains
regulated wetlands, streams, and buffers.
CERTIFICATION
I, , hereby certify that I am the/an owner, or am an authorized
agent of , a corporation or other business association
authorized to do business in the State of Washington, which is the sole owner of the property that is the subject of this application. If
I, or the corporation or business association, am/is not the sole owner of the property, I certify that I or this corporation/business
association am/is authorized to represent all other owners of the property.
I further certify that to the best of my knowledge, the critical areas in the development proposal site have not been illegally altered
and that the applicant has not previously been found in violation of critical areas regulations for any property in King County, or
alternatively, that if there have been any violations, such violations have been cured to the satisfaction of King County.
I further certify that all easements, deed restrictions, or other encumbrances restricting the use of the property are shown on the site
plans submitted with this application.
I further certify that I am familiar with King County's Community Trails Preservation Program and ❑ am / ❑ am not interested in
granting a voluntary easement for a rural equestrian trail.
I certify under penalty of perjury and under the laws of the State of Washington the information filed with this application is true and
correct. I understand that signing and submitting this application authorizes DDES staff to inspect the site at any reasonable time for
the purpose of permit review.
Applicant Signature:
Date:
ClearGradingPermitAppWksheetFORM Is-wks-clgr.pdf 05/19/2011 Page 2 of 5
PART II This portion of the worksheet will be completed by the Site Development Services Section.
Permit Type:
Submittal Requirements
Quantity: Description:
*Application Worksheet/Certification
**Grading Plan
Environmental Checklist
Environmental Determination
Quantity Calculations
Drainage Plan/Calcs
Critical Areas Studies
Soil Amendment Plan
Certification and Transfer of Applicant Status
Legal Description (may be included on site plan)
Variance/Reasonable Use Exception
Application Fee Worksheet
Payment Schedule
Other:
Inspection Area:
Minimum payment due
At Application Submittal.
Subsequent payments ..
subject to approved
payment schedule
(review of application will not
commence until all review
fees are paid)
* Application Worksheet is not required if a completed JARPA or FPA is submitted with application.
** Grading plan shall include at a minimum the following information unless specifically waived: vicinity, topography, dimensions,
clearing limits, open space, NGPE's, conservation easements, drainage systems, buildings, structures, landscape and restoration
plans, critical areas and associated buffers and other information as may be required by the director.
For purposes of this application, the following items are considered waived unless specifically requested above: Fire District receipt,
current Certificate of Water Availability, proof that the lot(s) are recognized as separate lots, Certificate of Sewer Availability or site
percolation date with preliminary Seattle King County Health Department Approval, Certificate of Future Connection for Sewer or Water
if in Urban growth area, and Certificate of Transportation Concurrency.
This completed form must be signed by a representative of the Site Development Services Section and must accompany the completed
permit application or the application will not be accepted. This approval includes a waiver for purposes of application, those items more
specifically noted above.
DDES Staff Signature:
Date:
PART III This portion of the worksheet will be completed by the Site Development Services Section staff.
Project Name:
Permit Number:
Have critical area reports been prepared for this or adjoining properties? ❑ Yes ❑ No
Has a critical area notice on title been recorded on this or adjoining properties? ❑ Yes ❑ No
Is the site located in SO-220/NS-P23? ❑ Yes ❑ No TREES 1/TREES 2? ❑ Yes ❑ No
Have any critical areas been mapped on GIS or other databases for this or adjoining properties? ❑ Yes ❑ No
Identify below and attach any relevant maps/printouts to this report.
Site Contains Site Abuts
Critical area Yes? No? Yes? No?
Comments
Wetlands
❑
❑
1❑
Aquatic Areas
❑
❑
❑
❑
100-Year Flood lain
❑
❑
❑
❑
Channel Migration Hazard Area
❑
❑
❑
❑
Landslide Hazard
❑
❑
❑
❑
Erosion Hazard
❑
❑
❑
❑
Seismic Hazard
❑
❑
❑
❑
Coal Mine Hazard
❑
❑
❑
❑
Steep Sloe
❑
I ❑
I ❑
❑
Critical Aquifer Recharge Area
❑
❑
❑
❑
Wildlife Habitat
❑
❑
❑
❑
Wildlife Corridor
❑
1 ❑
❑
I ❑
ClearGradingPermitAppWksheetFORM Is-wks-clgr.pdf 05/19/2011 Page 3 of 5
Critical Area Site Conditions
Is there evidence of geologic hazard areas on or adjacent to the project site? ❑ Yes ❑ No If yes, please describe:'
i
i
Are there any unmapped wetlands or aquatic areas on or adjacent to the project? ❑ Yes ❑ No If yes, please describe:
Does the site contain or abut unmapped wildlife habitat or corridors? ❑ Yes ❑ No If yes, please describe:
Part IV This portion of the worksheet will be completed by the Site Development Services Section staff.
DRAINAGEITRAFFIC
Does the project add more than 2,000 sq. ft. of new impervious surface?.......... ❑ Yes ❑ No... More than 10,000?... ❑ Yes ❑ No
Does the project add more than 7,000 sq. ft. of new pervious surface? ............. ❑ Yes ❑ No... More than 70,000?... ❑ Yes ❑ No
Are there mapped or disclosed closed depressions within the project boundary?........................................................... ❑ Yes ❑ No
Is the project within or adjacent to a flood hazard area?................................................................................................. ❑ Yes ❑ No
Is the project within or adjacent to a Critical Drainage Area?.......................................................................................... ❑ Yes ❑ No
Does the project propose to construct/modify a drainage ditch/pipe that is 12 inches in size/depth, or receives
runoff from a drainage pipe/ditch that is 12 or more inches in size?............................................................................... ❑ Yes ❑ No
Is this a redevelopment project proposing greater than $100,000 of improvements to a high use site? ......................... ❑ Yes ❑ No
Is this a redevelopment project that exceeds 50% of the assessed valuation of the existing site improvements and
collectively involves 5,000 sq. ft. or more of new or replaced impervious surfaces?...................................................... ❑ Yes ❑ No
Have there been any drainage complaints filed on this or adjoining properties?............................................................. ❑ Yes ❑ No
Does any aspect of this proposed project connect to a county or state road or right-of-way? ........................................ ❑ Yes ❑ No
Will this project create more than one access point (double driveway) onto a road? ...................................................... ❑ Yes ❑ No
Are there any ROW improvements (sight distance clearing, utilities, etc.) needed or proposed? ................................... ❑ Yes ❑ No
Approximately how many truck trips will be generated by this project? Duration?
Drainage/traffic Site Conditions
Describe existing site drainage:
Describe downstream drainage and condition:
Describe groundwater conditions:
Describe existing road network including site distance?
Are there other site issues suggesting engineering or traffic review is warranted or required? ❑ Yes ❑ No If yes, describe.
Part V This portion of the worksheet will be completed by the Site Development Services Section staff.
GENERAL SITE CONDITIONS
Briefly describe the site:
Topography:
Vegetation:
Wildlife and/or habitat:
ClearGradingPermitAppWksheetFORM Is-wks-clgr.pdf 05/19/2011 Page 4 of 5
Describe soil types observed/Mapped:
Describe existing utilities (hydrants, signs, poles, etc.):
Are there any wells or septic systems in the project vicinity? ❑ Yes ❑ No If so, describe the location:
Describe the project impacts on soil, water, and vegetation:
Is there evidence of un-permitted clearing or grading? ❑ Yes ❑ No If so, describe:
Part VI This portion of the worksheet will be completed by the Site Development Services Section staff.
OTHER CONSIDERATIONS
Will any of the following permits or approvals be required to undertake this project?
Permit / Approval Comments
Building Permit?
❑ Yes ❑ No
Demolition Permit?
❑ Yes ❑ No
ROW Permit?
❑ Yes ❑ No
WSDOT Access Permit?
❑ Yes ❑ No
Critical Area Exception?
❑ Yes ❑ No
Shorelines SDP or Ex.?
❑ Yes ❑ No
Forest Practice Permit?
❑ Yes ❑ No
WDFW — HPA?
❑ Yes ❑ No
NPDES Permit?
❑ Yes ❑ No
404 or Sec 10 Permit?
❑ Yes ❑ No
401 Certification?
❑ Yes ❑ No
Other? -List:
Will any of the following be required as a condition of issuance of this permit?
Description Comments
Notice on Title?
❑ Yes ❑ No
Native Area Ret.
❑ Yes ❑ No
Financial Guarantee?
❑ Yes ❑ No
Liability Insurance?
❑ Yes ❑ No
Exception to stds?
❑ Yes ❑ No
Other? -List
DDES Staff Signature:
Date:
Check out the DDES Web site at www.kingcounty.goy/permits
Clea rGradingPermitAppWksheetFORM Is-wks-clgr.pdf 05/19/2011 Page 5 of 5
L'a
King County
Department of Development
and Environmental Services
900 Oakesdale Avenue Southwest
Renton, WA 98057-5212
206-296-6600 TTY 206-296-7217
Web date: 01/16/2008
CLEARING AND GRADING PERMITS
APPLICATION FEES
(Attachment to Bulletin 28)
For alternate formats, call 206-296-6600.
Grading and Clearing Permit review and inspection services are subject to either fixed fees or hourly
charges. The total cost of a permit will vary depending upon the complexity of the project and the number
of ancillary reviews that are required to complete the application review (e.g., drainage, SEPA, or critical
area review). Consult the current DDES fee schedule for the required fees or deposit.
For projects subject to hourly charges, DDES collects a deposit at the time of application submittal up to
50% of the anticipated hourly charges for the project. Additional deposits may be required to complete a
project. Any unused deposit will be refunded upon completion of review and inspection.
In addition to the standard review and inspection fees applicable to all permit applications, certain other
fees and base fee adjustments may be applicable to clearing and grading projects. These include, but are
not limited to:
Permit Administration Fees — Intake fees will be assessed for all permit applications except
miscellaneous clearing permits, which are assessed hourly charges. Issuance fees will be
assessed for all clearing and grading applications, except short form permits.
Investigation fees — Investigation fees are assessed any time work proceeds prior to issuance
of a permit.
Fees paid for pre -application review to resolve an active code enforcement case may be applied
toward the required investigation fee.
Other review fees may be assessed during the course of project review if the project or scope of the
project is particularly complex. DDES makes every effort to notify customers when these additional
reviews are required. In some cases, projects can be modified to avoid additional reviews.
I have read the foregoing and understand that the estimated fees contained on this worksheet are only an
estimate and the actual cost of this permit will depend upon the review services required and the
complexity of the proposed project. I accept financial responsibility for all fees associated with this permit
or approval.
Applicant Signature Date
Check out the DDES Web site at www.kingcounty.gov/permits
ClearGradingPermAppFeeWkstBulletin28FORM Is-wks-c1grB28:pdf 01/16/2008 Page 1 of 1
East Renton Lift Station Mitigation Plan
CONTENTS
1.0
INTRODUCTION...........................................................................................................................1
2.0
PROJECT SITE.............................................................................................................................1
2.1 WETLANDS...........................................................................................................................................1
2.2 STREAMS..............................................................................................................................................2
2.3 BUFFER CONDITIONS............................................................................................................................2
3.0
PROJECT DESCRIPTION.......................................................................................................... 3
3.1 PURPOSE...............................................................................................................................................3
3.2 CONSTRUCTION.................................................................................................................................... 3
3.2.1 New Pipeline.......................................................................................................................... 3
3.2.2 Construction Equipment and Access..................................................................................... 4
3.2.3 Best Management Practices.................................................................................................. 5
3.2.4 Schedule.................................................................................................................................5
3.3 OPERATION AND MAINTENANCE..........................................................................................................5
4.0
IMPACTS....................................................................................................................................... 6
4.1 STREAM DEWATERING.........................................................................................................................6
4.2 TEMPORARY EQUIPMENT CROSSING AND PIPELINE TRENCHING ACROSS STREAM...............................6
4.3 PIPE INSTALLATION IN BUFFER AREAS.................................................................................................7
4.4 TREE REMOVAL....................................................................................................................................7
5.0
MITIGATION PLAN.................................................................................................................... 8
5.1 AVOIDANCE AND MINIMIZATION..........................................................................................................8
5.2 STREAM RESTORATION.........................................................................................................................8
5.2.1 Streamhanks.......................................................................................................................... 8
5.2.2 " Stream Channel (Bed)........................................................................................................... 8
5.3 BUFFER RESTORATION AND TREE REPLACEMENT................................................................................8
6.0 GOALS, OBJECTIVES, AND PERFORMANCE STANDARDS............................................9
7.0 MONITORING AND MAINTENANCE...................................................................................13
7.1 PRE-CONSTRUCTION...........................................................................................................................13
7.2 POST -CONSTRUCTION AND BEFORE PLANT INSTALLATION................................................................ 13
7.3 AS -BUILT INSPECTION........................................................................................................................ 13
7.4 PERFORMANCE MONITORING.............................................................................................................13
7.5 MONITORING REPORTS.......................................................................................................................14
7.6 MAINTENANCE AND CORRECTIVE ACTION.........................................................................................15
8.0 CONTINGENCY PLAN.............................................................................................................16
9.0 LIMITATIONS............................................................................................................................16
10.0 REFERENCES.............................................................................................................................16
FIGURES...................................................................................................................................................17
APPENDIX A: PLAN SHEETS................................................................................................................1
ESA page i
July 2011
East Renton Lift Station Mitigation Plan
LIST OF TABLES
Table 1. Vegetation Success Criteria — Upland Buffer and Stewart Creek Riparian Area.......... 11
Table2. Monitoring Program...................................................................................................... 14
LIST OF FIGURES
Figure 1 — Vicinity Map
Figure 2 — Streams, Wetlands and Buffers
Figure 3 — Site Plan
page ii ESA
July 2011
East Renton Lift Station Mitigation Plan
1.0 INTRODUCTION
At the request of Carollo Engineers and the City of Renton Public Works Department, ESA
prepared this stream and buffer mitigation plan for the East Renton Lift Station Elimination
project located in King County and Renton, Washington. The project is to install a new sewer
pipe through Maplewood Park to convey wastewater via gravity flow to an existing sewer main
located south of the park. An existing pump station north of the park would be removed.
ESA delineated streams and wetlands and prepared a critical area report for the project site in
spring 2009. That report has since been updated to reflect current regulatory requirements.
Detailed descriptions of site conditions including the onsite stream and wetlands are provided in
the East Renton Lift Station Wetland, Stream, and Wildlife Study (ESA, 2011).
This mitigation plan has been prepared in accordance with King County Code (KCC)
requirements and guidelines for mitigating impacts to streams and buffer areas (King County,
2007). This plan is also intended to meet state and federal requirements for mitigating impacts
to streams. The plan summarizes site conditions, describes the proposed project, explains project
impacts, and describes stream restoration activities. A proposed maintenance and monitoring
program and a contingency plan for the mitigation area are also included.
2.0 PROJECT SITE
The project site is located on a plateau on the north side of the Cedar River valley, within Water
Resource Inventory Area (WRIA 8) — CedadSammamish River drainage. The project site
includes an existing sewer lift station north of Maplewood Park in the city of Renton, and a
proposed new sewer pipeline running south of the lift station through the park, which is in
unincorporated King County (Figure 1). The northern boundary of the park forms the city -
county boundary.
The existing lift station is located on a fenced gravel pad at the end of a gravel access road
extending from SE Second Court. The park contains young, mixed conifer -deciduous forest
crossed by unpaved foot trails. There is evidence of other past disturbance including an old
concrete building foundation. Numerous underground and overhead utilities are present along
the proposed pipeline corridor alignment. A stream (Stewart Creek) flows through the study
area from north to south. Several wetlands are associated with the stream, as discussed below.
2.1 Wetlands
ESA identified seven wetlands on the project site, designated as Wetlands A through G
(Figure 2) (ESA, 2011). ESA rated the wetlands using the Washington State Wetland Rating
System for Western Washington (Hruby, 2004). Each of the wetlands received a rating of
Category II and requires a buffer of 140 feet under King County Code (KCC) 21 A.24.325.A.1.
No wetlands are located north of the park in the city of Renton's jurisdiction.
ESA page]
July 2011
East Renton Lift Station Mitigation Plan
2.2 Streams
ESA also delineated two streams on the site (Figure 2). Stewart Creek flows from north to south
through the project site. A small unnamed tributary joins Stewart Creek north of Wetland G.
Neither stream supports fish (ESA, 2011). .
Stewart Creek enters the northern end of the study area via a plastic culvert. The Stewart Creek
stream channel averages approximately five feet wide, with portions of the channel in the
northern part of the park up to 10 feet in width. Stewart Creek exits the south end of the park via
a grated concrete culvert. The stream is piped for approximately 0.3 mile south of Maplewood
Park, then enters an open channel and flows another 0.45 mile before joining the Cedar River.
The tributary to Stewart Creek is three feet wide with a gravel bottom and appears to have
formed as a result of overbank flows from the main stream. The riparian area along both Stewart
Creek and the tributary consists of native forest and wetlands.
Both streams meet the King County criteria for Type N streams with a buffer of 65 feet (KCC
21 A.24.358). Stewart Creek begins south of the park boundary and both streams are in King
County jurisdiction.
2.3 Buffer Conditions
The portion of the stream and wetland buffers extending into City of Renton jurisdiction
(Figure 2) consists mostly of gravel -surfaced access road and the existing fenced and graveled
pump station area. Limited vegetation consisting largely of shrubs and red alder saplings is
present around two detention ponds north of the access road and pump station.
Within Maplewood Park in King County jurisdiction, the stream and wetland buffers (Figure 2)
consist of native, mixed conifer and deciduous forest, and cleared areas dominated by invasive
vegetation. Native forest vegetation dominates most of the site, with invasive species present
mainly at the north and south site boundaries and along foot trails. Within the native forest,
dominant trees include red alder, black cottonwood, Douglas fir, western hemlock, and western
red cedar. The forest community is fairly young, although some of the Douglas fir trees are
older based on their large size. Understory species include salal, snowberry, salmonberry,
Oregon grape, and sword fern. Portions of the forest are open and parklike, while a dense
understory is present in other -areas. Unpaved foot trails parallel the stream and branch off into
the rest of the park. The invasive herbaceous species herb Robert is present along the foot trails.
The southern portion of the buffers within Maplewood Park has. been disturbed by past clearing
and grading. Soils in this area are compacted, and the vegetation is dominated by non-native
invasive species such as Himalayan blackberry and Scot's broom, as well as native trailing
blackberry. Immediately south of Maplewood Park, the buffer area consists of residential
development and 148th Place SE (Figure 2).
Page 2 ESA
July 2011
East Renton Lift Station Mitigation Plan
3.0 PROJECT DESCRIPTION
3.1 Purpose
The East Renton Lift Station, operated by the City of Renton, is just under 10 years old. It is
located north of Maplewood Park near the end of the NE 2nd Court cul-de-sac (Figure 2). The
lift station serves to pump sewage from nearby residential neighborhoods (Maplewood Estates,
Parkside Court, Shy Creek, Liberty Ridge, and others for a service area of approximately 430
acres) to the gravity sewer system located near N.E. 4th Street. The City of Renton prefers to
serve customers via a gravity sewer pipeline, rather than a lift station whenever feasible. A
gravity system eliminates electricity costs f6r pumping and equipment maintenance, which
greatly reduces annual Operation and Maintenance (O&M) costs. Based on topographic survey
data, conversion to a gravity system is possible at this location by crossing through an
undeveloped portion of Maplewood Park and connecting to the Briar Hills Division No. 4 sewer
system to the south.
Conversion to a gravity sewer system involves installation of a new sewer pipeline crossing
Maplewood Park, and removal of the existing lift station north of the park.
3.2 Construction
ESA met with City of Renton, King County, and Washington Department of Fish and Wildlife
(WDFW) representatives in the spring of 2011 to discuss the project and permitting
requirements. The main point of discussion was whether a trenched crossing of the onsite stream
(Stewart Creek) would be permitted. ESA determined that Stewart Creek does not support fish
(ESA, 2011). Based on these findings, WDFW indicated that a trenched crossing of the stream
would be allowed (Fisher pers. comm., 2011). This is consistent with direction given by King
County at the January 25, 2011 pre -application meeting. The project has therefore been
designed with a trenched stream crossing.
3.2.1 New Pipeline
The new pipeline will consist of approximately 1,030 linear feet of 12-inch-diameter and
15-inch-diameter pipe (Figure 3). The new pipe will be installed using open trenches. Trench
excavations ranging from 3 to 10 feet deep would be required to maintain the desired gradient
along the alignment. In addition, the existing lift station structure will be demolished.
The following general sequence of construction activities is anticipated for pipe installation.
Survey and mark construction limits.
Install temporary erosion and sediment control (TESC) measures in
148th Place SE.
3. Remove existing 8-inch-diameter gravity sewer and existing 48-inch-
diameter manhole, and install 15-inch-diameter gravity sewer and
new 60-inch-diameter manhole in 148th Place SE.
ESA page 3
July 2011
East Renton Lift Station Mitigation Plan
4. Confirm operation of new 15-inch-diameter gravity sewer by
television inspection, air test and inspection of manholes with
channeling.
5. Relocate fencing to provide equipment access at East Renton Lift
Station.
6. Clear and grub 30-foot-wide corridor and install remaining TESC
measures for installation of the gravity pipelines.
7. Temporarily divert stream flow (Stewart Creek).by bypass pumping
and install temporary stream crossing.
8. Install 15-inch-diameter gravity sewer in Maplewood Park.
9. Install 12-inch-diameter gravity sewer between existing manholes in
existing gravel access area north of the park.
10. Confirm operation of new 15-inch and 12-inch-diameter gravity
sewer by television inspection and air test.
11. Install temporary wastewater bypass pumping systems and test.
12. Perform improvements to existing manholes north of the park and fill
existing 12-inch-diameter gravity sewer.
13. Inspect manhole channeling.
14. Decommission bypass pumping systems and commence gravity sewer
operation.
15. Remove temporary stream crossing, and revegetate work areas within
the park.
16. Decommission and demolish existing lift station facilities._
17. Construct miscellaneous site improvements at East Renton Lift
Station site.
18. Perform asphalt overlay in 148th Place SE.
3.2.2 Construction Equipment and Access
The City anticipates using the following equipment to construct the project: backhoe, trackhoe,
bulldozer, dump truck, concrete truck, and 5 to 10 HP submersible pumps. Construction
Page 4 ESA
July 2011
East Renton Lift Station Mitigation Plan
equipment and materials will be staged on the existing gravel access road north of the park and
on the roadway surface of 148th Place SE south of the park, at least 30 feet away from streams
and wetlands (Figure 3). Construction equipment and workers will access the work area from the
gravel access road and from 148`h Place SE. A temporary crossing consisting of quarry spall
(riprap) will be installed to allow equipment to cross Stewart Creek (Figure 3).
3.2.3 Best Management Practices
Clearing of vegetation within the pipeline corridor, trenching to install the pipe, and other
construction activities will disturb soils and could cause minor, temporary erosion and
sedimentation. Increased erosion and sedimentation could result in a short-term increase in
turbidity in the onsite stream or wetlands. As with any construction project, there is potential for
water quality contamination due to accidental spills of hydraulic fluid or other materials. The
following erosion control measures and construction best management practices (BMPs) would
be used to avoid and minimize these temporary impacts:
• As part of the project's Temporary Erosion and Sediment Control (TESC) plan, install
silt fence along the construction corridor to protect nearby wetlands from sedimentation
(see Sheet C-02, Appendix A).
• Temporarily bypass the onsite stream prior to trenching the pipe across the stream or
installing the temporary stream crossing for equipment.
• Place straw, mulch, or commercially available erosion control blankets in areas that
require additional protection.
• Revegetate disturbed areas as soon as possible after completion of construction.
• Maintain construction equipment in good working order, free of leaks of fuel, hydraulic
fluids, or other chemicals.
• Keep fueling and equipment maintenance areas within designated staging areas and away
from streams and wetlands.
• In the unlikely event that a construction accident or spill releases contaminants into
waterways or the surrounding environment, BMPs (such as oil booms and adsorbent
pillows) would be employed and utilized to contain and minimize the spill.
• Route all water from trench dewatering to the existing sanitary sewer system in
accordance with permit requirements.
3.2.4 Schedule
The City intends to construct the project in the summer/fall of 2012. Construction is anticipated
to last approximately four months.
3.3 Operation and Maintenance
The new pipeline will be located underground, with manholes for maintenance access (e.g.,
cleaning the pipe). No other operation or maintenance activities are anticipated, following
project construction.
ESA page S
July 2011
East Renton Lift Station 1Llitigation Plan
4.0 IMPACTS
This section describes proposed impacts to streams.and stream/wetland buffers during project
construction. No wetland impacts would occur. Tree removal in the buffer is also discussed.
Section 5 provides a mitigation plan for these impacts.
4.1 Stream Dewatering
Stewart Creek will be temporarily diverted to protect water quality and aquatic life during in -
stream work. For this project, in -stream work will include installation of a temporary equipment
crossing, and trenching of the new sewer pipe across the stream.
To divert streamflows, cofferdams will be placed in the stream channel, both upstream and
downstream of the work area, encompassing the locations of both the temporary equipment
crossing and the adjacent pipeline trench (see Sheet C-08, Appendix A). Streamflow will be
pumped from above the upstream cofferdam into a temporary flexible pipe. Flows will be
discharged from the flexible pipe back to the stream, at a location downstream of the lower
cofferdam. The temporary equipment crossing will then be constructed while the streamflow is
being diverted by the pump. A culvert will be installed through the temporary equipment
crossing, extending from the upper cofferdam, through the culvert, to a point downstream of the
lower cofferdam (see Sheet C-07, Appendix A). Once the culvert is in place, flows will be
diverted through the culvert and the pump will be removed. The temporary equipment crossing
and culvert will remain in place throughout the construction period. This will serve to isolate the
work area from streamflows and minimize sedimentation in the stream.
The quantities of streamflow to be diverted around the work area are unknown. However, the
City intends to construct the project during the dry season, during low flows. Stewart Creek
does not support fish, based on ESA observations (ESA, 2011).
4.2 Temporary Equipment Crossing and Pipeline Trenching across Stream
A temporary crossing of Stewart Creek will be installed to allow equipment access from both
ends of the work area (north and south). The temporary equipment crossing will be located
within the 30-foot-wide construction corridor, adjacent to the new pipeline crossing of the
stream, to minimize disturbance of the streambed and banks (see Sheet C-07, Appendix A). The
temporary crossing will consist of riprap placed in the stream channel for equipment to drive on.
A culvert placed under the riprap will carry streamflow through the work area until construction
is complete, as discussed above.
The new sewer pipeline would be installed across Stewart Creek using a trenched crossing
immediately south of the temporary equipment crossing (see Sheet C-07, Appendix A). In
general, the pipeline trench will be 4 feet wide but could be up to 10 feet wide depending on the
side slopes needed at the top of the trench: The pipe would have a minimum 5 feet depth of
cover at the stream crossing (see Sheet C-05, Appendix A).
For purposes of mitigation planning, it is assumed the entire 30-foot width of the construction
corridor would be temporarily disturbed at the stream crossing. The equipment crossing and
Page 6 ESA
July 2011
East Renton Lift Station Mitization Plan
pipe trench will be located where an existing foot trail crosses Stewart Creek. The existing trail
crossing is 8 to 10 feet wide and devoid of vegetation. The project would require the removal of
some native riparian vegetation beyond the existing foot trail width, resulting in a minor and
temporary loss of wildlife habitat and shading for the stream.
The stream channel of Stewart Creek at the crossing location is 5 to 15 feet wide (see
Sheet C-07, Appendix A). Approximately 437 square feet of the streambed would be
temporarily disturbed by the equipment crossing and pipeline trench. This part of the stream
would not be available for use by aquatic species such as benthic macro invertebrates for the
duration of construction (up to four months). Aquatic species would be able to move through the
construction area via the temporary culvert.
Following construction and pipeline installation, the temporary crossing will be removed, and
the streambed and banks will be restored and revegetated as described in Section 5.
4.3 Pipe Installation in Buffer Areas
Construction of the new sewer pipeline will require clearing a corridor 30 feet wide and
approximately 760 feet long through Maplewood Park. The pipeline trench within the corridor
will be up to 10 feet wide and 3 to 10 feet deep. The remaining width of the 30-foot corridor
would be used for equipment access and stockpiling of materials. Construction will affect 21,948
square feet (0.5 acre) of stream buffer and wetland buffer within Maplewood Park (Figure 3).
Impacts within the park will include clearing of native vegetation, soil disturbance to excavate
the trench for the pipeline, and soil compaction by construction equipment. Buffer areas outside
of the park that would be affected by the project are currently paved or gravel -surfaced.
Approximately two-thirds of the affected buffer area within the park (the northern portion)
currently consists of native forest vegetation. The southern one-third of the construction corridor
in the park, south of Wetland C, is dominated by non-native invasive vegetation (e.g., Himalayan
blackberry). Of the 21,948 square feet of buffer impact in the park, 2,736 square feet is currently
occupied by foot trails and will be restored to foot trails following construction. Approximately
915 square feet at the north and south ends of the construction corridor within the park is
currently unvegetated or grassy and will be reseeded following construction.
Removal of native vegetation will reduce the buffer's function in providing wildlife habitat and
screening from human disturbance. When construction is complete, the construction corridor will
be revegetated as described in Section 5.
4.4 Tree Removal
Construction of the new pipeline will require the removal of 31 trees, mostly large Douglas -fir
with some big -leaf maple and red alder (see Sheet C-03, Appendix A). Trees will be replaced at
a 3:1 ratio along the construction corridor as described in Section 5.
ESA page 7
July 2011
East Renton Lift Station Mitigation Plan
5.0 MITIGATION PLAN
This section first describes mitigation sequencing measures the City has followed to avoid and
minimize impacts to critical areas. It then describes proposed measures to restore Stewart Creek
and stream/wetland buffer areas temporarily affected by construction. Drawing sheets referenced
in this section are provided in Appendix A.
5.1 Avoidance and Minimization
King County, the City of Renton, the Corps, and Ecology require that impacts to critical areas
must be avoided and minimized to the extent possible. The location of the proposed project is
constrained by the need to make connections to the existing sewer main. The proposed pipeline
alignment was selected to avoid impacts to wetlands and to follow an existing utility corridor
and foot trails to the extent possible. Avoiding impacts to buffer areas by located the pipeline
farther to the east or west would have required a longer pipeline traversing a larger area of native
forest, resulting in greater impacts to trees and wildlife habitat.
5.2 Stream Restoration
5.2.1 Streambanks
Following construction, the quarry spalls and culvert placed in Stewart Creek for the temporary
equipment crossing will be removed. The streambanks will be stabilized with coir logs and coir
blankets, and then planted with native shrub live stakes (Sheets L-01 and L-02). A foot path 8 to
10 feet wide surfaced with wood chips will be maintained on both sides of the stream, similar to
existing conditions.
5.2.2 Stream Channel (Bed)
Following installation of the new pipeline across the stream, the trench will be backfilled with a
minimum five feet depth of cover over the pipe. The trench backfill material and cut-off walls in
the trench are designed to prevent surface flows in the stream channel from dispersing into the
trench (Sheet C-08). Cobbles will be added over the trench to restore a natural stream substrate.
5.3 Buffer Restoration and Tree Replacement
The 30-foot-wide construction corridor within Maplewood Park will be revegetated when the
project is complete. Ten feet of this corridor width will be replanted with native tree species.
King County requires trees removed for the project to be replaced at a 3:1 ratio (Casey pers.
comm.). A total of 103 trees will be planted along the. construction corridor to replace the 31
trees removed, slightly exceeding the County's requirements (Sheet L-01).
The remaining 20 feet of the corridor width will be replanted with native shrubs; trees will not be
planted in this area to avoid tree root damage to the sewer pipe. Tree and shrub species to be
installed will be upland species that are dominant in this part of Maplewood Park. A foot path 8
to 10 feet wide, similar to the existing path, will be maintained and surfaced with wood chips
Page 8 ESA
July 2011
East Renton Lift Station Mitigation Plan
(Sheet L-01). Streambanks that are disturbed by construction will be replanted with live stakes
(Sheet L-02).
The pipeline trench in buffer areas will be backfilled with pipe bedding material to meet
engineering requirements. A layer of topsoil and organic compost approximately 18 inches deep
will be placed over the gravel to provide a substrate for plant establishment (Sheet L-02).
Woodchip mulch will be placed around the base of each tree and shrub to suppress weeds and
retain moisture.
In areas between the woody plantings (not treated with woodchip mulch), an herbaceous seed
mix will be applied to prevent erosion of bare soil and reduce infestation by non-native invasive
plant species.
Restoration plantings will be installed during the rainy season (typically October 1 — March 1).
This will allow time for plant roots to become established prior to summer drought conditions.
The landscape contractor will be responsible for irrigation of the plantings to ensure plant
survival for one year following installation. Watering will likely be accomplished via a water
truck.
Outside of Maplewood Park, the pipe would be installed in existing paved or gravel -surfaced
areas. These areas do not provide buffer functions to onsite streams or wetlands. These affected
areas will be restored to pre -construction conditions.
6.0 GOALS, OBJECTIVES, AND PERFORMANCE
STANDARDS
This section provides goals, objectives, and performance standards for the restoration project.
The goal is to restore Stewart Creek and buffer areas temporarily impacted by construction of the
East Renton Lift Station Elimination project. This is assumed to occur through achievement of
the following objectives:
• Revegetate approximately 18,467 square feet of upland buffer in the construction
corridor with a native vegetation community similar to that existing in adjacent areas of
Maplewood Park, while allowing for continued use of a foot path through the park;
Revegetate areas of the streambank along Stewart Creek that are affected by the
temporary equipment crossing to a native tree/shrub riparian community, while allowing
for continued use of a foot path across the stream; and
• Ensure the stability of the streambed and banks where the pipeline crosses Stewart Creek.
The restoration areas will be monitored for success for a minimum of three years following
complete installation per King County requirements (Casey, pers. comm.). Specific performance
standards and success criteria have been developed to determine whether the restoration plan has
met these goals and objectives. The restoration plan will be deemed successful if the following
performance standards and success criteria have been met.
ESA page 9
July 2011
East Renton Lift Station Mitigation Plan
Buffer and Riparian Vegetation
To determine if vegetative diversity, vegetation cover, and habitat complexity are developing,
the success criteria shown in Table 1 apply to the buffer and riparian restoration areas.
Pipeline Crossing Stability
To determine whether the pipeline crossing of Stewart Creek is stable, the following standards
will apply:
• No evidence of streambank erosion or settling of the streambed over the pipeline
crossing.
• Coir logs and blanket installed on streambanks remain in place.
Gravel, cobbles, or other natural substrate will be present in the streambed over the
pipeline trench.
Page 10 ESA
July 2011
East Renton Lift Station Mitigation Plan
Table 1. Vegetation Success Criteria — Upland Buffer and Stewart Creek Riparian Area
Criteria
Year 1
Year 2
Year 3
Vegetation Cover
At least 40% cover by native
At least 50% cover by native
At least 60% cover by native
herbaceous species including
herbaceous species including
herbaceous species including
desirable native volunteer
desirable native volunteer species
desirable native volunteer
species in areas not treated with
in areas not treated with wood
species in areas not treated with
wood fiber mulch.
fiber mulch.
wood fiber mulch.
At least 10% total native woody
At least 25% total native woody
cover including desirable native
cover including desirable native
volunteer species.
volunteer species.
Vegetation Survival
100% survival of installed
80% survival of installed woody
80% survival.of installed woody
woody plants as determined by
plants within representative plots.
plants within representative
comprehensive plant count
plots.
(contractor's guarantee period).
Invasive Species
Non-native invasive species
Same as Year 1.
Same as Year 1.
cover will not exceed a total of
10% across the mitigation areas.
This includes, at a minimum,
King County -listed Class A
noxious weeds and reed
canarygrass, purple loosestrife,
poison hemlock, bindweed,
climbing nightshade, non-native
knotweeds, and non-native
blackberry.
ESA page 11
July 2011
East Renton Lift Station Mitigation Plan
7.0 MONITORING AND MAINTENANCE
This section describes the City's proposed monitoring and maintenance of the restoration areas.
Three years of monitoring and maintenance will be the responsibility of the City of Renton. The
activities described in this section will be coordinated with King County Parks, which owns
Maplewood Park. A professional biologist or landscape architect will perform all monitoring.
7.1 Pre -Construction
Monitoring of the restoration areas will begin prior to construction of the pipeline project. At
this time, the City will meet with the construction contractor to define and clearly mark the limits
of work and TESC measures. King County typically inspects the site at this stage, prior to the
start of construction.
7.2 Post -Construction and Before Plant Installation
After the pipeline is installed, the temporary stream crossing and TESC measures will be
removed. At this time, the project biologist or landscape architect will meet with the landscape
contractor to discuss site preparation prior to installation of plantings. Should any plant species
substitutions be necessary, the project biologist and contractor will discuss and document these
for approval by King County. The biologist will also inspect the plant material and assist with
placement of plant species in the field. King County may wish to inspect the site again at this
stage, prior to installation of plants.
7.3 As -built Inspection
After the plants are installed in the restoration areas, the landscape contractor will provide an as -
built or record drawing. The project biologist or landscape architect will visit the site with the
King County representative to ensure the plants have been installed properly, mulch and seed
have been applied, and there are no other issues that need to be addressed.
The biologist will verify the as -built conditions, inspect the plants, recommend replacement if
necessary, and establish sample plots and photo point locations. Permanent plots for monitoring
will be selected to represent the planting areas. The appropriate number and location of plots
will be determined on site during the as -built site inspection. Permanent photo points will be
located to provide a representative visual documentation of site progress. The photo points and
sample plots will be shown on the as -built drawing.
Monitoring of the restoration areas will begin upon King County acceptance of the as -built or
record drawing, and will continue for three years.
7.4 Performance Monitoring
The site will be monitored according to the schedule and methods shown in Table 2. During
each year of the monitoring period, the site will be monitored in the spring for the presence of
non-native invasive vegetation. This will allow time for maintenance of the site if needed to
remove weeds during the early growing season before seed set. A second site visit in the late
ESA page 13
July 2011
East Renton Lift Station Mitigation Plan
summer or early fall will be made to assess vegetation cover and survival against the project
performance standards.
Table 2. Monitoring Program
Monitoring
Location & Methods
Year 1
Year 2
Year 3
Element
Vegetation
Percent woody cover
.Late Summer
Late Summer
Late Summer
cover and
data collected within
or Early Fall
or Early Fall
or Early Fall
establishment
monitoring plots
(Years 2 and 3).
General observations
of installed plant
health and seed
establishment across
the site all ears).
Vegetation
Comprehensive count
Late Summer
Late Summer
Late Summer
survival
of installed plants
or Early Fall
or Early Fall
or Early Fall
(Year 1 only).
Count of installed
plants within
monitoring plots
(Years 2 and 3).
General observations
of installed plant
health all years).
Non-native
General observations
Early Spring
Early Spring
Early Spring
invasive
of invasive species.
vegetation
Percent cover data
collected within
Late Summer
Late Summer
Late Summer
monitoring lots.
or Early Fall
or Earl Fall
or Earl Fall
Pipeline
General observations
Early Spring
Early Spring
Early Spring
crossing
of streambed and bank
stability
stability at pipeline
crossing location.
Late Summer
Late Summer
Late Summer
or Early Fall
or Early Fall
or Early Fall
7.5 Monitoring Reports
An as -built or record drawing will be provided to King County within 90 days of completion of
the mitigation installation.
Page 14 ESA
Aly 2011
East Renton Lift Station Mitigation Plan
Monitoring reports will be prepared during Years 1, 2, and 3 to document the findings of the
monitoring site visits. The reports will be submitted to King County by October 31 of each
monitoring year. The monitoring reports will include:
• Project background and monitoring schedule;
• Restoration goals, objectives, and performance standards;
• Quantitative plant survival, vigor, and aerial coverage of tree and shrub strata within the
established monitoring plots;
• General observations of site conditions and plant health across the restoration areas;
• General observations of streambed and bank stability at pipeline crossing location;
• Use of buffer area by humans and wildlife;
• Documentation of completed maintenance activities;
• Photographs taken from established photopoints;
• Recommendations for additional maintenance actions;
• Vegetation plot data (included as an appendix).
King County will inspect the site after submittal of each monitoring report.
7.6 Maintenance and Corrective Action
The City of Renton will commence maintenance of the restoration areas after acceptance of the
as -built report and continue for three years. After initial planting acceptance by the professional
biologist, the landscaping contractor will be responsible for plant survival for a period of one
year. After this period, maintenance will be performed by City personnel. Maintenance will
include, but is not limited to:
• Installation of additional plantings if the combination of installed plants and regrowth of
native volunteer species does not meet the minimum performance standards discussed
above. All plants that die prior to Year 1 monitoring must be replaced.
Weeding twice per year during the maintenance period to remove invasive, non-native
plant species in the restoration areas. Trees and shrubs will be weeded to the dripline.
Examples of undesirable non-native plants include Himalayan blackberry, English ivy,
Scot's broom, knotweed,,and reed canarygrass. Weeding is to be performed by hand or
with the lightest possible equipment. Use of herbicides is not allowed without prior
approval by King County.
• Adding wood fiber mulch rings around the base of each installed tree or shrub to
maintain at least three inches depth of mulch.
• Stabilizing eroded areas using bioengineering techniques that are appropriate if
mulching, seeding or other standard erosion control methods fail.
Removing from the site all litter and non-native invasive vegetation.
ESA page 15
July 2011
East Renton Lift Station Mitigation Plan
8.0 CONTINGENCY PLAN
Should any monitoring report reveal the mitigation has failed in whole or part, and should that
failure be beyond the scope of routine maintenance, the City will submit a contingency plan to
King County. Once approved, the contingency plan will be installed and will replace the
approved mitigation plan. If the failure is substantial, the County will likely extend the
monitoring period for that mitigation.
9.0 LIMITATIONS
Within the limitations of schedule, budget, scope -of -work, and seasonal constraints, we warrant
that this study was conducted in accordance with generally accepted environmental science
practices, including the technical guidelines and criteria in effect at the time this study was
performed, as outlined in the Methods section. The results and conclusions of this report
represent the authors' best professional judgment, based upon information provided by the
project proponent in addition to that obtained during the course of this study. No other warranty,
expressed or implied, is made.
10.0 REFERENCES
Casey, Laura. King County biologist. January 25, 2011 — pre -application meeting.
ESA. 2011. East Renton Lift Station Elimination Wetland, Stream, and Wildlife Study. Revised
June 2011. Prepared for Carollo Engineers and City of Renton.
Fisher, Larry. WDFW biologist. March 23, 2011- site visit.
Hruby, T. 2004. Washington State Wetland Rating System for Western Washington — Revised.
August 2004. Ecology publication number 04-06-025. Olympia, WA.
King County. 2007. Critical Areas Mitigation Guidelines. Department of Development and
Environmental Services. June 2007.
Page16 ESA
July 2011
East Renton Lilt Station Mitigation Plan
FIGURES
ESA page 17
July 2011
SOURCE: King County, 2009 (2005) East Renton Lift Station. 209036
Figure 1
Vicinity Map
King County, Washington
East Renton Lift Station. 209036
SOURCE: ESA Adolf— 2009, PACE Engineers, Inc; Kng County, 2009 (2005) Figure 2
Streams, Wetlands, and Buffers
Maplewood Park, King County, WA
I I
j
I i
1
3
I j
r. .,
._. ... _. _ . ..�( .... x,l
BRIAR RILLS / 1
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0 20 40 80
N Scale In Feet 17h,\ BUFFER IMPACT AREA (21,948 SF/0.5 ACRE)
SOURCE: City of Renton; Carollo, 2011.
t�\�t .r ..: tl AEMweoIf ro
� e
t .� �uwc nNnn
MAPLEw000
LXIt ESTATES
NO
- East Renton Lift Station. 209036
Figure 3
Site Plan
King County, Washington
East Renton Lift Station Mitigation Plan
APPENDIX A:
PLAN SHEETS
ESA Appendix A
July 2011
ii
r
I WA5IUNGTGN
I�
+arm } �>♦ 4
REFERENCE: 2f110 GOGGLE MAP
VICINITY MAP
® NO SCALE
REFERENCE: 2W7 GOGGLE EARTH
LOC �GTION MAP
CITY OF RENTON
EAST RENTON LIFT STATION �
ELIMINATION
AGENCY PERMIT SUBMITTAL
PRELIMINARY - 60% DESIGN LEVEL
PROJECT NO. WWP-27-3549
CITY OF RENTON
1055 SOUTH GRADY WAY
RENTON, WA 98057
Tnaoo umelnl lw nae on �enM iNs
of Carol, Enpin— WmhlNlw P.C.
V ' Piea1—
JULY 2011
CONTACT PERSONNEL
DAVE CHRISTENSEN WASTEWATER UTILITY SUPERVISOR (425) 430-7212
DRAWING LIST
—RiPTION
cavEA a:E
rtLLANEaus oErNu o
AGENCY PERMIT SUBMITTAL
ABBREVIATIONS
A. couRv
ucr.iE oxcanE
oD
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OlrtvDl MnFR
All AA.mv[Lrrunrl[u FICOR
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BUILDING MATERIALS
VIEW IN SECTION
MATERIAL EXISTING REEEM7/OVEE NEW
VIEW IN PLAN (NEW SHOWN- EXISTING SCREENED).
cw IIG
YAvwLNI
OTHER
VIEW IN PLAN
EXISTING
SURVEY LEGEND (EXISTING LINE WORK)
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EROSION AND SEDIMENT CONTROL STANDARD NOTES:
iNRORC[D RUITK I AxU 9[gmfvrATI NC0 R IC4 IKMOMSs TCOILRTRUTCANIRRROVAl Or REFMMxC DORDRIINMDIMIIE.O.BVLAIS
[TOR FOUI—RC Lq:.InNq loses. vl Es.IE4IIR.Ions.nN.uN.Ie.IEIENIaN.AUINEs,qulu.tics
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xORi OR IIORIIONixI IswDMAPYLNOIx D1. DGNING III"COIGTNaLTIW Y[Rao. NO gsIWM.w[ It— ti IE"L, LMub 61 NLL0CRCRMITICO. TrIEU LAGLRURI46r NLLDE
IURR MNV MNEU U+ InE ArwLIGN1,ti6C SUYLNVISON 1 ON INE UVHA I WN OI CONSI Nwl WH.
[R OR USDC DIMINADN R
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CSUAx[OUS R. Aw AxtA NEEUMC EBC Ay:AS WEe1wIUO GI HEOUINE IxMEUNIt AI swJI UE AuuNkssEv vAlnlV SEvkNNlwvs.
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LLGNED,_TO RAMG.UORCRA TrCLSICII r AOENwA1EN I IT0 TI1C SURAISTREM STW Iw x.11 1r11W[STC
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AT CROSS REFERENCE
SANITARY SEWER NOTES:
I. IH.AIIccovllIX vuvsrlALl uLswwlrw to nKYar AvuA ✓Iovcu D. Rwe eouvn✓wW roulgVwvc.v+NOlx vnNyN VLRuc Ralnq sweYwLa wow's UEYANIMENI.A
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SURVEY NOTES:
uscoLLor[i rows Aawwlcxrs xccS.mu (.ACE cwrxIX Raxr RTI A coNGLErE MowmcvT AT nre EAST OwxiCR coRxER a s[cTaN,. AlDwccs mmlrACE coNTRIX
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O6T.1RrCET4[U
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EROSION AND SEDIMENT CONTROL STANDARD NOTES CONT:
1 ItMYgNwH.ni c Irwlal u� HNIX�WIAIw
—DCD SO TINTIirlE OOnIM Aws E6 An AT LEAST IIIKC TIEET ABOVE TIC — GRR.DE Or TICITI—
LIH lnt
Is. COVER—SUICS MCL DC A11-I c0NTORmANCC-11-10IXTtIEsuRUCCWATERD—IANI—
t 6oIIa1.11. ALL UIIURULU ANUS STALL UL I—ILU 10 W IAr-11 WEU LAI UE 6ELUEU wNHCYAIAIWI 101 ny:
TCRr NAs DEO AREAS WEER OF wUGIALI IE SEEDED OIE Or TIC OCGNMG Or TlEw[Ts[AGON.AIICICII MAR OF —se ANUS TORE SCCDCIAlD
AItnasE
AGENCY PERMIT SUBMITTAL
PARKSIDE GENERAL NOTES:
® 7 u.,,6xax ]e COURT
.. . ... . .
E
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AGENCY PERMIT SUBMITTAL
fRCITY OF EAST RENTON LIFT STATION
RENTON ELIMINATION
EXISTING SITE AND CONSTRAINTS
GENERAL NOTES:
PARKSIDE enEvc
COURT .... . ...snu......
C=L�:,I=lID81AIlCII0T IC
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Q eKEY NOTES:
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cornnEros
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ESTAIES
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: AGENCY PERMIT SUBMITTAL
CITY OF
EAST RENTON LIFT STATION
ELIMINATION
RENTON
TEMPORARY EROSION AND SEDIMENT
02
CONTROL PLAN
.... ... .. .
rA
GENERAL NOTES:
A.
wOWl -37-2(t) LL
1-01 L.1 1 51— —5S
01 11111-1- 1 � CII I ft—L .1 ftl —S.
KEY NOTES:
v,
kz E.
RLM—ANU --ENI —CITYST—M
_CSED
I— tull 11 111—
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E L .11,111wew.ue acAx. -Ai I
AGENCY PERMIT SUBMITTAL
PCOARKSIDETURGENERAL NOTES:
A. "22"
AN.ClRD`..r—"ZEE.—
S
,=EEse RI,ARE Sl— TLE11ITS OF IETLAIDS AID DE
ARE
APPROXIMATE
fz— — —
I M 8, 4LCONSTRUCT�, ACTlITIES—BE—TAIIED
SEE SHEET C-05 THIN THE III � CONSTILICTION AND A—D
DIRECTINCTLAROMTUSBARICL.
7 C. —DI
BEDARCASSRAILaCRESTWEDITTHE
CONCIM101 Of TIE PROJCCT PER CCATAACT
20 lEIAAIfI T I "ll" DOCUMENTS.
EASEMENT I �l E Islil
5 D. EMT RENTON LIFT SlATK)H SHAU � I SERVICE
IT SS PARTWLELCTTIMEST NO—C—EHIONOF]HE
c SEE SHEET C-06
CONTRACTOR TO MAINTAIN DRIVABLE ACCESS
,7 ......... . .....•
TACO THE EXISONG EAST RENTON — STATIEN AID
CESS TO ALL X ITS FACILITIES FOR CITY PERS—EL
-.STR.CT-
F_
77 E.
. ....... ...
AT ALL 71MES
.. . ... ....... . . ......... .. ....... ...... -.77 7
a .. . . .... ROCATION Of UISTING JFT:IITDIEIS��M �IS BASED CI4 DDRAM'DBAND F TES 19, I HTILITI B ARE SH
Rbl�i-i . .... .. —.A— I F. COIN I
=CV BYTHISPROJECT ORFGwIIIG
TEEDRIF1 THE LOCATIDIPR�ITEIMIIHG DUTIES
HO'CONSTRUCTION
EASEME I (17�74
nA
Y- E.". F. ISTALLBU IED PIPE INACCO41DANCEWITI-1—
STANDARD PLAN 405 BACK— PIPELINE BETWEEN STA
E UNIA �z' OL7,5�NOISIAR—ANDSTA=ST 10-11
CL CIR
I III. -BA "X SICT III) BACKFICLALL
X
;r"': SOUT11; RPIPELINE11THRArMWTER—HERE
ABLE, REMOVE ROCKSANDOTHER BEMIS. N-8
E .—Al— D—l—,BACKI-Ill WHIGH-1
-06
BORROW. COMP ACTTO-J-08—STA—
AID STA 8 AID 95% MOD PER ASTI DISH FOR ALL
SEE SHEET C r
EAST IERION
HIT IIAHON OTHER PIRELINE.
FACILITY
G. PIPELINE DICA-TIOIS SHAU BE CLOSED OIR
IS IS
I,ernA EACH WORK
DPERSECTION147.2NI)ATTHEENDOF
BRIAR HILLS,' �Klx
NO. 4 WORK DAY.
u
ti •KEY NOTES:
I, MYt E 131161-1)
STEWART C.IE" P -- — ---
'6
E I I
w HE AND ..... -INS OF 'A—E TNACEN
A PE PER S—ECII10I IL-2. SEE DWOS G-06 LABFON TRACING WINE STATION OETACS.
I, BE
—FACO�gUTOR TO SC,
ARIFY EXISTGRACE FROM STA
T .1 'T-".'T!`-ERE. *lN2NDH'S`CERH`FIED
MAPLEWOOD WEL—LESTRAW
-61M...
ESTATES
412
o
1-112 PNOVIDI ... END— WAANNN. TAPE PER
SHH SECTION 1D-2.
WEOANOS-P)j
-.131
2
PLAN
J
AGENCY PERMIT SUBMITTAL
CITY OF EAST REENTONNALIFT STATION
RENTO LIMITION
fv_.� N I.
BY wM.FEN, SITE AND PIPING PLAN
IO NEISN DATE
I
. STA 6•OO STAG-W
<97carvifo.
STA 4� STA3-W
Nss
365
5
3W
STA 3.cO STA 214 STA 2.W ST-W STA1M STA O-W STA O.
PROFILE
AGENCY PERMIT SUBMITTAL
EAST RENTON LIFT STATION
Lily u RENTON ELIMINATION
W-W- PIPING PLAN AND PROFILE -STA 0-00 -STA 5-00 C-05
GENERAL NOTES.-
3-01)
.............
.... . . . . . ......
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A.
No. �4,
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,A . . ...... ...
KEY NOTES:
.... ..... .... ...
11. AE
co—,—
. .........
Al 11. 1 111
— . . . . ......
I -AA.- A.y
.........
. . .... . ..... AL.
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On
..... . . ..... . ...........
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STA 9-5ts STA 9.011
I
A<
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3.
STA 8-W STA SSW PROFILE STA 1*1 STA 7. STA a-W STA S-W STA SHA STA 5.
AGENCY PERMIT SUBMITTAL
EAST RENTON LIFT STATION
CITY OF RENTON ELIMINATION
PIPING PLAN AND P
ROFLE — STA 5-00 -STA 1 0-31 O6
am -
CONSTRUCTION ENTRANCE DETAIL TYP
G03
FILE. BxJSC,DGBB
INSTALL TEMPORARY FILTER FABRIC
CATCH E%GT.MTESIOE LL
INSTALL TEMPOIUNY GRAVEL BEFORE _\ OR CENT TO DISTURBED ARE AS.
.RAGING RUBE O PROTECT,
I MOVE PRIOR IO PAVEMENT
INSTALLATIW
ELAN
i3—'\ TEMPORARY CATCH BASIN PROTECTION
SALE: Ii9
FILE: SvsCtOCw
I- IOUID
Ir EXISTCH
EXISTING GRACE
\/ \
.A MOUND
s TRENCH BACKFILL DETAIL TYP
6TA t•OD 61A B83 NIS
r ESA
SJ00 SN— A..cc
NW
B..IM WA pgtW
FABRIC ORE NWIREO
F.I.T. FABRIC
Y ' M.TE.-
.DAWRE Y
Ir L; j Of�BRI OR EOUW. ;
�L
OBETTEROR POSTS. gAHOARG OR PNOVF LLN SHFOGwODU VOSI
E ECTKTN ORAc FNCH AJD ON BOTH SIO6
OF FLIER FENCE FABRIC ON THE
SURFACE
SILT FENCE DETAIL AND NOTES
C-0x CALF: ITS
FILE: 62JSCI0000
I NIATELY J FEE)
ABOVE CRAuuEI INVERT, ALIGN
LOW 1,
OMA WITH CENTER OF NCI
I RZ.'N.' ED
BU C. STACK`
iLOWLINE
IE BACKS FIMUY,
:YI KC -A
STREAM DEWATERING COFFERDAM DETAIL (TYP)
°°° BEAL.T,GG_
CLEM PER W
SECTNPI x-0
s TRENCH BACKFILL STREAM AT CROSSING
DETAIL (TYP) IS
GENERAL NOTES:
A ABIIC FENCES ENAU BE PENOVED WHEN THEY HAYS BE— IHEW RUN- RBUT NOI SEFGHE
THE U_GPE AREA HAB C. PEHMANENILY STABLIIFD.
S. BItIC FENCES SHALL BE INSPECTED IMMEDIATELY AFTER EACH NAWFALL AND AT LEAST DAILY WRING
PRWOHDED RAINFALL ANY IEGUIRED REPAIRS SHALL BE MADE IMMEDIATELY.
KEY NOTES
O.G WHEN-NTSARENIE'SSARYFL,ER o BNALLBOBP`UCEDTiDTEIERTWLYATAS'D TPGS.WTHA
NIN IUMB,NERDVERAP ANDBDTHENDSSECDRELYFABTEIEDToTHETCGT
eEsv LIII FABRIC FENCE SHALL BE INSTALLED TOFOLLLOWMUM Of 6 FEET APART AND ORNEN I-
Lr wiomE—EEGROUN""E'EASIBUll-1 HENCPICHEs-ls SHALL
O=TE HBINCED A ALLYBE EAC.-TABR CU0 YURIEO fB WIDE AND 1 x INCHES DEEP. UPSLOPE AND ADJACENT TO THE WOOD
O WTO HEN STATI ALLOW STRENGTH ALTER FAORIC11 USED
.A WRE MESH SUPPORT TENCC SHALL BETASTENCD I IIELY TO
TI IE UPSLORE SIDE OF TIIE POSTS USING IIEAVY-0UTY WIRE STAPES AT LEAST , INCH LONG, TIE W WCS OR IIOG RINGS.
TIRE vRPE SHALL EXTEND INTO THE TRENCH A WNIMUY O, INCHES AND 510LLL NOT E%TENO MORE THAN b INCHESABOVE THE ORIGINAL GROUND SURFACE,
O B NOTII FILTER FABRIC SHALL APL SESTED OR WIRED THE HENCE, AND.—E. OF THE FABRIC BIWLL
"THE TR
ENCH. THE FABRIC SHALL NO, EXTEND MORE THAN b INCHES ABOVE THE W IGBUL GROUND
SURFACE, FILTER FABRIC SNALL NOT BE STAPLED TO EXIBi1NO TREES.
O ELIAIINATED^WBUCHACASE,THEFBii ERFABRICSER RITI wIE.
NEOIE O EED,IfE TIRE POSTSE ESH .—I FENCE MAY BE
g THE �oEIl� NEDI-SID11«1 PS o��w�:EE�EABEA�oHGIBD�,AEDTRASHPJMP.
SYSTEM•"
O
RCi DISCHARGE-1.1 DOWNSTREAM OF IMPACTED AREA TO A— EROSION. LINE DISCHARGE AREA WITH VISOUEEN
REOUNALEIT TO DISSIPATE FLOW ENERGY AND PREVENI CHANNEL SCOUR.
OINSTALL UPSTREAM COFFERDAM WITH LOW POINT ALIGNED WITH CENTER OF A— CIANIEL CO-D LOCATION WITH
I EMROTURY STREAM CROSSING.
DOWNSTREAM COFERDAM III-11-CIII AREA.
COMPLETE ALL IN WATER WORI, GRADE SITE AND INSTALL COW LOGS OR COIR BLANKET WHILE CHANNEL IS 0 TERED.
CROSS SHALL BE COMPLE,ED AFTER INSTALLATIDN OF PIPELW E AND DURING REMOVAL OF TEMPORARY STREAM
OWHEREDEWATER PIPE CROSSES EGUIFMFNT CROSSING OR INTERFERES WITH LONSTFUCTIGN. BURY PIPE IN
WRENCHAND COVER WITH STEEL PIATEB.
OUSE HIGH VENSEITY FENCING TO DELINEATE I TNEAM LIMIT OF WORK.
ORIPE BEDDING AND BACK. ILL PER CITY STD PLAN 405, NA- WCKF ILL WHERE INDICATED.
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INITIATION OF rEMFLORAfry PSTREAM CROSSING
PE,M_SEE SHEET
KEY NOTES:
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REFERENCE: 2010 GOOGLE MAP
VICINITY MAP
NORTH
NO SCALE
REFERENCE: 2007 GOOGLE EARTH
LOCATION MAP
NO SCALE
BURIED UTILITIES IN AREA
PLEASE CALL BEFORE YOU DIG
1.800.424.5555
CITY OF RENTON
EAST: RENTON LIFT STATION
'
ELIMINATION
-
AGENCY PERMIT SUBMITTAL
PRELIMINARY - 60% DESIGN LEVEL
PROJECT NO. WWP-27-3549
DRAWING LIST
SHEET NO.
CITY OF RENTON
DRAWING NO
DESCRIPTION
1
3
1055 SOUTH GRADY WAY 2
G-01
G-02
C-01
COVER SHEET
GENERAL NOTES, ABBREVIATIONS AND LEGENDS
EXISTING SITE AND CONSTRAINTS
4
RENTON, WA 98057 6
C-02
C-03
TEMPORARY EROSION AND SEDIMENT CONTROL PLAN
DEMOLITION PLAN
6
7
C-04
C-05
SITE AND PIPING PLAN
PIPING PLAN AND PROFILE - STA 0+00 -STA 5-00
B
9
C-06
C-07
PIPING PLAN AND PROFILE - STA 5+DO - STA 1D+31
MISCELLANEOUS DETAILS - I
10
11
C-08
L-01
MISCELLANEOUS DETAILS - II
BUFFER ENHANCEMENT 8 STREAM RESTORATION PLANTING PLAN & DETAILS
12
L-02
STREAMBANK PLANT SCHEDULE 8 LANDSCAPE DETAILS
The undersigned has approved this
document for and on behalf
of Carollo Engineers Washington P.C.
Vice President
JULY 2011
CONTACT PERSONNEL
DAVE CHRISTENSEN WASTEWATER UTILITY SUPERVISOR (425) 430-7212
AGENCY PERMIT SUBMITTAL
GENERAL NOTES: BUILDING MATERIALS LINE WORK DRAWING CROSS REFERENCE
1. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS BEFORE STARTING WORK NEW OR EXISTING STRUCTURES
AND SHALL IMMEDIATELY NOTIFY THE ENGINEER OF ANY DISCREPANCIES. DETAIL OR SECTION
VIEW IN SECTION N IDENTIFICATION
NEW OR EXISTING STRUCTURES HIDDEN I `1
z. UNLESS S,CON CONSTRUCTION
AWNS INDICATED
THE ONTHE
MATERIAL EXISTING REMOVE NEW
DRAWINGS, CONSTRUCTION SHALL BE AS INDICATED IVTHE APPLICABLE NEW PIPING (TRIPLE LINES) D-1
TYPICAL DETAILS AND GENERAL NOTES. TYPICAL DETAILS SHALL APPLY CONCRETE
EVEN THOUGH NOT REFERENCED AT SPECIFIC LOCATIONS ON DRAWINGS. ,. .__ _. -. Z _ ,.� NEW PIPING HIDD=N (TRIPLE LIN^-S) —
- — — DETAIL OR SECTION TAKEN
3. WHERE NO CONSTRUCTION DETAILS ARE SHOWN OR NOTED FOR ANY PART ON THE SAME SHEET
OF WORK, DETAILS SHALL BE THE SAME AS FOR OTHER SIMILAR\WORK. SOIL NEW \� \� \� \� NEW PIPING (SINGLE LINE)
NEW PIPING HIDDEN (SINGLE LINE) —
IS
ABBREVIATIONS -_.___ TAKEN ON T;E ODRAWING
AS ANCHOR BOLT O.C. ON CENTER VIEW IN PLAN (NEW SHOWN - EXISTING SCREENED) EXISTING PIPING (TRIPLE LINES) — . .. .......... INDICATED
ABC AGGREGATE BASE COURSE OD OUTSIDE DIAMETER .._.. "..._. _ ._._. ......_. .,._.. AT TITLE
AC ASPHALTIC CONCRETE GRATING SPAN PAVEMENT EXISTING PIPING HIDDEN (TRIPLE LINES) -- --- --
AFF ABOVE FINISHED FLOOR PL PROPERTY LINE, PLACE
AHR ANCHOR PNL PANEL TYPICAL DETAIL REFERENCE
EXISTING PIPING (SINGLE LIVE) gUJggLE
ALM ALARM POC POINT OF CURVATUR[AL ALUMINUM PSI POUND PER SQUARE INCH OTHER
APPROX APPROXIMATE PVC POLYVINYL CHLORIDE EXISTING PIPING HIDDEN (SINGLE LINE)--- -m--- -- --- — -- TYPICAL DETAIL NUMBER
ASTM AMERICAN SOCIETY FORTESTINGAND MATERIALS PVMT PAVEMENT VIEW IN PLAN IDENTIFICATION
AUTO AUTOMATIC EXISTING NEW EQUIPMENT OR PIPING CENTERLINE
AVG AVERAGE R OR RAD RADIUS DETAIL OR SECTION
@ AT RDCR REDUCER WETLAND'? EXISTING EQUIPMENT OR PIPING CENTERLINE '-'—"'-"-"- "-----"""""""""" IDENTIFICATION
REF REFERENCE N-L N
BSP BLACK STEEL PIPE REINF REINFORCE (D) (ING)(MENT) NEW EOUIPMENT TYP D-11
READ REQUIRED."�c \.���\ i
C CIVIL RWTR RECLAIM ED WATER STREAM !--„��,,a���,.�. 7ETAIL OR SECTION
CA CONCRETE ANCHOR _ NEW EQUIPMENT HIDDEN — — — — — — — REFERENCE BUBBLE
co CATCH HANNEL SIN S SEWAGEOR HECK VALVE
SURVEY LEGEND (EXISTING LINE WORK) EXISTING EQUIPMENT
CH NL CHANNEL SN SWING CHECK VALVE DETAIL OR SECTION IS TO BE
CITY CITY OF RENTON SO STORM DRAIN FOUND ON THE SAME SHEET
CJ CONSTRUCTION JOINT SDMH STORM DRAIN MANHOLE Y. WATER VALVE MONUMENT NOT TIED THIS SURVEY NEW FITTING
CLORCL CENTERLINE SE SOUTHEAST HYDRANT #, NUMENT DETAIL OR SECTION IS TO
CLP CONTROL PANEL SIM SIMILAR FIRE DEPT. CONNECTION '• STOAMDEDA 'PASED CE CONTROL" EXISTING TO BE REMOVED -- BE FOUND ON THE DRAWING
CMP CORRUGATED METAL PIPE SPEC SPECIFICATION __ INDICATED
CND CONDUIT SS SANITARY SEWER, GRAVITY WATER METER SET MAG NAIL/ALJMMUM WASH=R
CO CLEANOUT SSFM SANITARY SEWER FORCE MAIN POST INDICATOR VALVE NEW PIPING CALL -OUT
COMP COMPARED SSMH SANITARY SEWER MANHOLE MANHOLcS SS�SD TYPICAL D 'TAIL IS TO BE
CONC CONCRETE SST STAINLESS STEEL ( ) SET 518" IRON REBAR W/RED
CONN CONNECTION SSA STATION — Ca PLASTIC CAP STAM?ED'PACE CONTROL' FOUND ON THE TYPICAL
- - ?QWER/JTILITY POLE UNLESS OTHERWISE STATED. EXISTING PIPING CALL -OUT
--'" DETAIL DRAWINGS
coNSTR CONSTRUCTION STD STANDARD _ - GUY ANCHOR n, SOIL TEST PIT
AT CROSS REFERENCE
co
CONTINUE (D) (OUS) OR CONTROL STL STEELL JUNCTION BOX `l SANITARY SEWER NOTES:
CP CONTROL POINT S/W SIDEWALK
CPEP CORRUGATED POLYETHYLENE PIPE SW SOUTHWEST E, POWER TRANSFORMER 1. THE HOURS OF WORK IN THE STREET RIGHT OF WAY SHALL BE PER CITY SPECIFICATIONS ON WEEKDAYS UNLESS OTHERWISE APPROVED IN WRITING BY THE PUBLIC WORKS DEPARTMENT.A
CPLG COUPLING "-"f-'-__-"-- TRAFFIC CONTROL PLAN STALL BE SUBMITTED TO THE CITY AND APPROVED BY KING COUNTY PRIOR TO BEGINNING ANY WORK WITHIN PUBLIC RIGHT OF WAY.
CTWD COTTONWOOD TDH TOTAL DYNAMIC HEAD 1= ! POWER/TELEPHONE VAULT
CENTERLINES
TOC TOP OF CONCRETE [3----' POWER METER CENTERLINES ------------- ..... .............................. 2. ALL LOCATIONS OF EXISTING UTILITIES SHOWN ARE APPROXIMATE AND IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO VERIFY THE TRUE AND CORRECT LOCATION SO AS TO AVOID DAMAGE
D DRAIN, DEPTH TP-4 TELEPHONE
TE T PIT NUMBER /TV RISER PROPERTY LINES ------------------------------.... OR DISTURBANCE.
dBA DECIBELS ADJUSTED Ty TYPICAL RIGHT-OF-WAY LINES----- ----
DBH DIAMETER BREAST HEIGHT '' GAS VALVE _ 3. A PRE -CONSTRUCTION CONFERENCE THAT INCLUDES THE CITY, KC ROADS, AND KC DDES SHALL BE REQUIRED PRIOR TO STARTING NEW CONSTRUCTION PROVIDE MIN 7 DAY NOTICE). IT SHALL BE
:.- EASEMENT LINES -- --- --- — ---� — ( )
DDES DEPARTMENT OF DEVELOPMENT AND V OR VLV VALVE _ GAS METER LOT LINES --- THE CONTRACTORS RESPONSIBILITY TO SECURE ALL NECESSARY PERMITS PRIOR TO STARTING CONSTRUCTION. (INSPECTION WILL BE ACCOMPLISHED BY A REPRESENTATIVE OF THE CITY OF
ENVIRONMENTAL SERVICES VERT VERTICAL STREET LIGHT ,_....................... . RENTON AND BY RESPECTIVE PERMIT HOLDERS. IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO NOTIFY THE PUBLIC WORKS INSPECTOR 24 HOURS INADVANCE OF BACKFILLING ALL
DEG DEGREE VLT VAULT DITCH LINE-"' - CONS RUCI ION. )
DET DETAIL VOL VOLUME / SPOT ELEVATION WATERLINE - ---.------
SIGN
............ SANITARY SEWER LINE ...-_.............. sY______. _.. ._......_
DIA OR 95 DIAMETER STORM DRAIN LINE 4. CONTRACTOR IS SOLELY RESPONSIBLE FOR THE MEANS. METHODS AND SEQUENCES OF CONS FRUC I ION AND FOR THE SAFETY OF WORKERS AND OTHERS ON THE CONSTRUCT ION SITE.
DIM DIMENSION W WEST, WIDTH, WATER MAILBOX ""
,..... SUBDIVISION LINES..............................................................
DIP DUCTILE IRON PIPE W/ WITH :.-..1_.t ,:_.. ROCKERY GAS LINE ___.___._._. 5. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO OBTAIN PERMITS OTHER THAN THOSE INCLUDED WITHIN THE SPECIFICATIONS PRIOR TO ANY CONSTRUCTION.
DWG DRAWING WD WATER DISTRICT ti�
DWN DOWN W O WITHOUT CONIFEROJS TREE UNDERGROJND POWER LINES --------------:s•............-------
-'� 1* UNDERGROJ ND TELEPHONE LINES '
.._.........._. 6. A COPY OF THESE APPROVED PLANS AND SPECIFICATIONS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN PROGRESS.
WSDOT WASHINGTON STATE UNDERGROUND POWER LINES/
................................... .:r ..............................
E EAST DEPARTMENT OF TRANPORTATION DECIDUOUS TREE TELEPHONE LINES 7. ALL DISTURBED AREAS SHALL BE SEEDED AND MULCHED N OTHERWISE STABILIZED TO THE SATISFACTION OF KING COUNTY/CITY FOR THE PREVENTION OF ON -SITE EROSION AFTER THE
EA EACH
'_ i
ELORELEV ELEVATION Y PERCENT � UNDERGROUND CABLE TV LINES-------------�:'-�----------- COMPLETION OF CONSTRUCTION PER CONTRACT DOCUMENTS.
ELEC ELECTRIC
AL -. IRRIGATION CONTROL VALVE OVERHEAD UTILITY LINES -----------
( ) CHAIN LINK FENCE _ _ _ ___ 8. IN UNIMPROVED AREAS, MANHOLE TO EXTEND MINIMUM 6INCHES AND MAXIMUM 121NCHES ABOVE FINISHED GRADE OR MUST HAVE MINIMUM 2'DIAMETER CONCRETE RING POURED AT GRADE. IN
EMBED EMBEDMENT _-- PAVED AREA, COVER MUST SLOPE IN ALL DIRECTIONS TO MATCH PAVING.
ENGR ENGINEER ./ -; -y WIRE FENCE
EOP EDGE OF PAVEMENT v DRIP LINE WOOD FENCE -- —
EQL EQUAL SURVEY NOTES:
EQPT EQUIPMENT HORIZONTAL DATUM:
EX OR EXIST EXISTING NAD 83-91 BASED ON FOUND MONUMENTS WCCS 42832 (PACE CONTROL POINT 02) A CONCRETE MONUMENT AT THE EAST QUARTER CORNER OF SECTION 14 AND WCCS 42900 (PACE CONTROL
FIG FLANGE
EROSION AND SEDIMENT CONTROL STANDARD NOTES: POINT #17)A4'COVCRETE MONUMENT IN A CASE AT I HE INTERSECTION OF SE 142ND STREET AND 1481 H PLACE SE.
FRP FIBERGLASS REINFORCED PLASTIC 1. APPROVAL OF THIS EROSION AND SEDIMENTATION CONTROL (ESC) PLAN DOES NOT CONSTITUTE AN APPROVAL OF PERMANENT ROAD OR DRAINAGE DESIGN (E.G., SIZE AND VERTICAL DATUM:
FT OR' FOOT, FEET LOCATION OF ROADS, PIPES, RESTRICTORS, CHANNELS, RETENTION FACILITIES, UTILITIES, ETC.). NAVD 88 BASED ON CITY OF RENTON LIM 'RENT2127'BEING A FOUND ROUND CONCRETE MONUMENT IN A CASE AT THE INTERSECTION OF SE 142ND STREET AND 149TH PLACE SE, (ELEVATION=
363.72 FEET).
GIS GEOGRAPHIC INFORMATION SYSTEMS 2. THE IMPLEMENTATION OF THESE ESC PLANS AND THE CONSTRUCTION, MAINTENANCE, REPLACEMENT, AND UPGRADING OF THESE ESC FACILITIES ISTHE RESPONSIBILITY OF
THE APPLICANT/ESC SUPERVISOR UNTIL ALL CONSTRUCTION IS APPROVED. LEGAL DESCRIPTION:
H DPE HIGH DENSITY POLYETHYLENE THE NORTH HALF OF THE NORTHEAST QUARTER OF THE SOUTHEAST QUARTER OF SECTION 15, TOWNSHHIP 23 NORTH, .RANGE 5 EAST, \W.M., IN KING COUNTY, WASHINGTON; EXCEPT THE WEST 30
HOA HOMEOWNER'S ASSOCIATION 3. THE BOUNDARIES OF THE CLEARING LIMITS SHOWN ON THIS PLAN SHALL BE CLEARLY FLAGGED BY SURVEY TAPE OR FENCING. IF REQUIRED, PRIOR TO CONSTRUCTION FEET THEREOF, AND THE NORTH HALF OF THE NORTHWEST QUARTER OF THE SOUTHWEST QUARTER OF SECTION 14, TOWNSHIP 23 NORTH, RANGE 5 FAST, W.M., IN KING COUNTY WASHINGTON,
FIORE OR HORIZONTAL (SWDM APPENDIX D). DURING THE CONSTRUCTION PERIOD, NO DISTURBANCE BEYOND THE CLEARING LIMITS SHALL BE PERMITTED. THE CLEARING LIMITS SHALL BE EXCEPT THOSE PORTIONS OF SAID SECTIONS 14 AND 15 HERETOFORE CONVEYED TO KING COUNTY BY DEED RECORDED UNDER RECORDING NUMBER 9401050822.
HORIZ MAINTAINED BY THE APPLICANT/ESC SUPERVISOR FOR THE DURATION OF CONSTRUCTION.
ID INSIDE DIAMETER OR INSIDE DIMENSION 4. STABILIZED CONSTRUCTION ENTRANCES SHALL BE INSTALLED AT THE BEGINNING OF CONSTRUCTION AND MAINTAINED FOR THE DURATION OF THE PROJECT. ADDITIONAL
IE INVERT ELEVATION MEASURES, SUCH AS CONSTRUCTED WHEEL WASH SYSTEMS OR WASH PADS, MAY BE REQUIRED TO ENSURE THAT ALL PAVED AREAS ARE KEPT CLFANANDTRACK OUT TO
IN OR" INCH, INCHES ROAD RIGHT OF WAY DOES NOT OCCUR FOR THE DURATION OF THE PROJECT.
INN OR INVERT
INVT 5. THE ESC FACILITIES SHOWN ON THIS PLAN MUST BE CONSTRUCTED PRIOR TO OR IN CONJUNCTION WITH ALL CLEARING AND GRADING SO AS TO ENSURE THAT THE
TRANSPORT OF SEDIMENT TO SURFACE WATERS, DRAINAGE SYSTEMS, AND ADJACENT PROPERTIES IS MINIMIZED. EROSION AND SEDIMENT CONTROL STANDARD NOTES CONT:
KC OR K.C. KING COUNTY 12. ANY PERMANEM RETENTION/D=TENTLON FACILITY USED AS A TEMPORARY SETTLING BASIN SHALL BE MODIFIED WITH THE NECESSARY EROSION CONTROL MEASURES AND
6. THE ESC FACILN IES SHOWN ON'I HIS PLAN ARE THE MINIMUM REQUIREMENTS FOR ANT ICIPATED SIT E CONDITIONS. DURING THE CONSTRUCTION PERIOD, THESE ESC SHALL PROVIDE ADEQUATE STORAGE CAPACITY. IF THE FACILITY IS TO FUNCTION ULTIMATELY AS AN INFILTRATION SYSTEM, THE TEMPORARY FACILITY MUST BE ROJGH
L LENGTH, LANDSCAPE FACILITIES SHALL BE 'UPGRADED AS NEEDED FOR UNEX?ECTED STORM EVENTS AND MODIFIED TO ACCOUNT FOR CHANGING SITE CONDITIONS (E.G.ADDFTIONAL COVER GRADED SOTHAT THE BOTTOM AND SIDES ARE AT LEAST THREE FEET ABOVE THE FINAL GRADE OF THE PERMANENT FACILITY.
LF LINEAR FEET MEASURES, ADDITIONAL SUMP PUMPS, RELOCATION OF DITCHES AND SILT FENCES, PERIMETER PROTECTION ETC.) AS DIRECTEDBY KING COUNTY.
MAX MAXIMUM 7. THE ESC FACILITIES SHALL BE INSPECTED DAILY BY THE APPLICANT/ESC SUPERVISOR AND MAINTAINED TO ENSURE CONTINUED PROPER FUNCTIONING. WRITTEN RECORDS 13. COVER MEASURES WILL BE APPLIED IN CONFORMANCE WITH APPENDIX D OF THE SURFACE WATER DESIGN MANUAL.
MDD MAXIMUM DRY DENSITY SHALL BE KEPT OF WEEKLY REVIEWS OF THE ESC FACILITIES. 14. PRIOR TO THE BEGINNING OF THE WET SEASON (OCT. 1), ALL DISTURBED AREAS SHALL BE REVIEWED TO IDENTIFY WHICH ONES CAN BE SEEDED IN PREPARATION FOR THE
MECH MECHANICAL WINTER RAINS. DISTURBED AREAS SHALL BE SEEDED WITHIN ONE WEEK OF THE BEGINNING OF THE WET SEASON. A SKETCH MAP OF THOSE AREAS TO BE SEEDED AND THOSE
MFRS MANUFACTURER'S 8. ANY AREAS OF EXPOSED SOILS, INCLUDING ROADWAY EMBANKMENTS, THAT WILL NOT BE DISTURBED FOR TWO CONSECUTIVE DAYS DURING THE WET SEASON OR SEVEN AREAS TO REMAIN UNCOVERED SHALL BE SUBMITTED TOTH= DDES INSPECTOR,
MH MANHOLE, SANITARY DAYS DURING THE DRY SEASON SHALL BE IMMEDIATELY STABILIZED WITH THE APPROVED ESC METHODS (E.G.. SEEDING, MULCHING, PLASTIC COVERING, ETC.).
MIN MINIMUM
M ISC MISCELLANEOUS 9. ANY AREA NEEDING ESC MEASURES THAT DO NOT REQUIRE IMMEDIATE ATTENTION SHALL BE ADDRESSED WITHIN SEVEN (7) DAYS.
MON MONUMENT
10. THE ESC FACILITIES ON INACTIVE SITES SHALL BE INSPECTED AND MAINTAINED A MINIMUM OF ONCE A MONTH DURING THE DRY SEASON, BI-MONTHLY DURING THE WET
N NORTH SEASON, OR WITHIN TWENTY FOUR (24) HOURS FOLLOWING A STORM EVENT.
NE NORTH EAST
NOOR 4 NUMBER 11. AT NO TIME SHALL MORE THAN ONE (I) FOOT OF SEDIMENT BE ALLOWED TO ACCUMULATE WITHIN A CATCH BASIN. ALL CATCH BASINS AND CONVEYANCE LINES SHALL BE
NOM NOMINAL CLEANED PRIOR TO RAVING. THE CLEANING OPERATION SHALL NOT FLUSH SEDIMENT -LADEN WATER INTOTHE DOWNSTREAM SYSTEM.
NTS NOT 70 SCALE
NW NORTHWEST
AGENCY PERMIT SUBMITTAL
�' ® r R Dt x�'G, 1 1.
O�� LPAEE"G'"E�s"° NTS C EAST RENTON LIFT STATION o n ,6 CITY OF FJULY 2077
w — .0 RENTON ELIMINATION
w EDL
BURIEDUTILITIESBEEF REYOU ��,low" �{„, �� DATUM PIanninyBwTtliinglPubhc Works Dept GENERAL NOTES, ABBREVIATIONS G-02
PLEASE CALL BEFORE YOU DIG 474M4L 6- �Ilmc
1.800.424,5555 40. REVISION BY DATE APPR ' •• .u,. :ZLI AND LEGENDS °' s.
� 7
1
C? #6
I j 635D-10.6R/C
N =177801.336
I E - 1316600520
ELEV=381.31
{
1 / \ 20'PERMANENT
EASEMENT (TYP)
N-177929.79
i E - 131659621
i
I / LIMITS OF 6?.
CONSTRUCTION
CP 09
10 CONSTRUCTION
ICI 14=177408.22 635D-10.9R/C ..iJS:�_' EASEMENT(IYP). _ �'1 •k,�•, ,,•"?g- Xr
E=1316781.00 N=177673.380 ,J />�..:-/'- /�/ �i; -.
E =1316607.095
N=17,122.96 ELEV -381.17 CP#12
E=136764.21 77869
11 € / / :635D-1WW
I III T N = 77669.529
I N= 177453.38 f /// F E =1316685.320
E .._13,6765.16 I / i /
ELEV-3B072
=
635D0.9R/C 7
BRIAR HILLS / i // / / N=17771vss
P / E-13'67a5522 _360, '
9' NO.4 / / / // ELEV =378.22 d=62°0700'
a t € Pe1d- / i // �-R-h. f //Lc39029 ,,71- «.e.
( C BRASS .J. /
i
( PARKSIDE
COURT
GENERAL NOTES:
N =17R282.36 A. EXISTING SURVEY CONDUCTED MAY 2009 IDENTIFIES
E=1376495.53 + _ N=178349.58 TREES6INCHESDBHAND LARGER. NOT ALL TREES AND
3 E = 7 316495.88
CP #8 �: SHRUBBERY ARE SHOWN. LIMITS OF WETLANDS AND
635D-10.8R/C =.._._....__. ____..._. ._.... STREAMS ARE APPROXIMATE.
N - 1781'. 1.131 _
E=13166.3.559 / \ q-- I B. ALL CONSTRUCTION ACTIVITIES SHALL BE CONTAINED
ELEV=390.08 I �i I WITHIN THE LIMITS OF CONSTRUCTION AND AVOID DIRECT
CP #3 WETLAND DISTURBANCE.
635D-106.852 s N=178279.84 I i I I-'h C. ALL DISTURBED AREAS SHALL BE RESTORED AT THE
N = t 78036.852 CP #7 A E = 1316594.08 I f \ 1I CONCLUSION OF THE PROJECT PER CONTRACT
E =1316612.612 I V CP #2 •BRASS DISC
635D-10.7R/C 11 DOCUMENTS.
ELEV = 390.63 B I { I 635D-102MON
O N 1176210.086
979 r I I N=178279.487
7 E=131660t.979 .�. > D. EAST RENTON LIFT STATION SHALL REMAIN IN SERVICE
jj E = 1316608.089
DOD PARK / ELEV =39059 Fp c , I f \ AT ALL TIMES THROUGH COMPLETION OF THE PROJECT.
ELEV -392 7 CONTRACTOR TO MAINTAIN DRIVABLE ACCESS TO THE
+' (DWN: t.3').6
�.+� EXISTING EAST RENTON LIFT STATION AND ACCESS TO ALL
4 p. / 5 +•y',M, a ._ _ .? / Kw I I OF ITS FACILITIES FOR CITY PERSONNEL AT ALL TIMES.
TP-2 _, f - __��'•� .. _,..''- \._ a' _--- E. LOCATgN OF EXISTING UTILITIES SHOWN IS BASED ON
�._� _._:.._- - .ad :... :Sias- �f•
RECORD DRAWINGS AND FIELD LOCATES. ALL EXISTING
-.� 4 J.••"" _- ..... .... ... ... UTILITIES ARE SHOWN APPROXIMATE. CONTRACTOR
.t--`. "4''�r '�,�,•�'� SHALL VERIFY THE LOCATION OF ALL EXISTING UTILITIES
AFFECTED BY THIS PROJECT ?RIOR TO BEGINNING WORK.
13 662021 .......
yr ' x tzBz92az1 1 ` • -. _ KEY NOTES:
\; A.
TERRAIN EAST AND WEST OF SURVEY IS MAPLEWOOD
1 ./ I:1i` �'-�J)(TYP) ?ARK AND IS HEAVILY FORESTED SIMILAR TO WHAT IS
SHOWN ON EXISTING SURVEY. MAPLEWOOD PARK IS AN
r
/ r y
INACTIVE PARK. .
,4
i,
LIMITS OF CONSTRUCTION TO EDGE OF EXIST GRAVEL
`.
�x {•. �'' �`4t' I:. ROAD, 'UNLESS OTHERWISE INDICATED.
EAST RENTON
\ k' • _ O3 LIMITS OF CONSTRUCTION TO FENCE LINE, UNLESS
LIFT STATION
FACILITY OTHERWISE INDICATED.
N = 178289.76
`Y ( DISC W/PUNCH 4O LIMITS OF CONSTRUCTION TO CURB, UNLESS OTHERWISE
635D-1 i.1aMIC x 3 E = 1316727 70
E Z 'r N=177602.91 / / ` '� � .,', - �• jj INDICATED.
N=177437.1131316777.18/ :/ / m� r f„g, >5` ',;.,�,'� -,wj ts• - ,:q ,,..,) P•
/ E =/. /"x .#' (TM „j„ • - 316728.10
k : E = 1316801.107 /--!?'�• -- 4 \. , O CONTRACTOR STAGING AREA LIMITED TO EDGE OF
/ P ELEV=374.17 GRAVEL DRIVE AND OTHER LIMITS AS INDICATED.
(D1NN 03) (TIP) 4 TEWART CREEK
_..._ _ _ PARK TO
�... .LL,_ ..�•.T,,,.,,,.,k 7! ,,y O LIMITS OF CONSTRUCTION THRU MAPL�WOOD
.w._..�..�__.__._. _:;::1 _ .:.._;,;.;`.`' �:y •..c'. / �x.>..x'(,T�•�;.. ,I _ ?r't ESTABLISHED BY CITY. CONTRACTORTO
a yy r�x / #5 MAI YTAIN'?ROTECTLIIMITS DURING CONSTRUCTION.
1'L 'f„
... .........._ ........_...._.... F
�...._._. I 3 148th PL SE - ..._..t.., i \.... y.,','„ •N i'� .:: �` y. \ �\\ r �.:.1]\a� ., f' �}^' { �. `"5 635D �O.Sft/C
ACCESS�j " .a N=178301.528
.....,_.si / TPHi '' r� 1g icy �'I•.:y' a t.3 .:-• -i^ _Z /
ELEV 39521
E
CONTRACTOR
CP 420 „f STAGING AREA
i \ N = 177612.94 t�. - .6d
%'" my`- :..:. , -.L 635D 20 R/C
E = 1316819.79 y:. • ` ., '�."." "N?*r.` /G. } ; : A... N.= t 78162,209 ...._ " ,,• r / .... s ✓p, ' CP #4
(lYP) 4E=1316812.623
635D.10.4R/C
ELEV = 389.00
A
l �-SL Y a MAPLEWOOD N=178309.,fi3
I _-t376844.86 5350J 22RIC , ESTATES ELEV 401.80
' E c 73168a6.654
_-_-. 19 r
c I N =' 77422.281 I # - { N - ; 77955 496f,
t i E - 13 .6844.02 _ ^--- - I E _1316824.221
y ry
n lJ =177407.03 I CP#11 '' i .. r "� -y ' ELEV 38378
r E=1376818.97 635D-1 11MNNY
C N = 177587.910 �, C- 023MAPLE WOOD PARK
I- , ....... .... .
E = 1316805.701 635D
3- 23R/C
ELEV =375.71
jl
&{ \E ='3t6804.772 )
WETLANDS P /
I : ELEV - 389.67 / i
I \ / NCORPORATED t\
KING COUNTY CITY OF RENTON
I
CITY OF RENTON
LIMITS (.\l� N=i78329.69 /
E 1317042.35
•C , KING COUNTY WETLAND AND STREAM BUFFER LIMITS
i � w \:
( i) N = 178314.46
jj y • \ / UTILITY AND ACCESS
EAS EM ENT TO CITY
)
rA
�T `� \ z/ OF RENTON
i r FILE: 8235CDD-C-100 ( p cD /
M1
jj K ly �
I 30' WATER
I EASEMENT
W.D. 90 �� /Y• 'r <
3 : MA -LE..:) PARK BOUNDARY € t /
x
-r
P�Ji. r.-.,.. AGENCY PERMIT SUBMITTAL
a o .
suPACE ENGINEERS. WC s� CITY OF
g v r=ao I€oEAST RENTON LIFT STATION wEJDLY2o11
° m -� RENTON ELIMINATION
BURIED UTILITIES NMFA ts'B'-. N�--� DATUM p�nn4lg�HWdmgt?uWic Works De
PLEASECALLBEf 0REYOUDIG �01t.y s-C PL EXISTING SITE AND CONSTRAINTS C-01
1,800.424.5555 NO. REVISION BY DATE RAPPR " "''""'';p1_"" .... a.
I
i I
F
t
I
STREAM DEWATE RING
-08 . PLAN
ti
�41V
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t ..
i.
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.",h .. _'_. .�a� �. - ,fit
J&v_
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/
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� iF "X •?j
............. , i 4 /
a .. / EWA T ,7
-�� .... BRIAR HILLS
R.Q
[148Ih PL BE,
'^i.'✓i }; ._ _ .'. w/'
-.....,_,_.T
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All
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CONSTRUCTION" I "'i i"T.,,, 'rJ •.�'' /�l S .. i. �,,...." �ji `.i /
..ENTRANCE#2 �Y` , �.✓ E� ....tofi
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J 7
5309 Shilshde Ave. NW
SeaUte, WA 98107
P: (206)789-9658
F: (206) 78B-�84
BURIED UTILITIES IN AREA
PLEASE CALL BEFORE YOU DIG
1.90G d24.5555
o, T4&r�Sf'
m 4�
p
�41e1lA1, 6�
NO.
REVISION
o`PACE ENGINEERS NC
BY I DATE I APPR I -"—
: .40'
�� DATUM
GENERAL NOTES:
PARKSIDE
A. EXISTING SURVEY CONDUCTED MAY 2009 IDENTIFIES
COURT
TREES 6 INCHES DBH AND LARGER. NOT ALL TREES AND
SHRUBBERY ARE SHOWN. LIMITS OF WETLANDS AND
STREAMS ARE APPROXIMATE.
/
B. ALL CONSTRUCTION ACTIVITIES SHALL BE CONTAINED
WITHIN THE LIMITS OF CONSTRUCTION AND AVOID DIRECT
WETLAND DISTURBANCE.
!
C. ALL DISTURBED AREAS SHALL BE RESTOREDATTHE
CONCLUSION OF THE PROJECT PER CONTRACT
I � �
1 DOCUMENTS.
I )
D. EAST RENTON LIFT STATION SHALL REMAIN IN SERVICE
AT ALL TIMES THROUGH COMPLETION OF THE PROJECT.
t I
CONTRACTOR TO MAINTAIN DRIVA13LE ACCESS TO THE
I
EXISTING EAST RENTON LIFT STATION AND ACCESS TO ALL
OF ITS FACILITIES FOR CRY PERSONNEL AT ALL TIMES.
E. LOCATION OF EXISTING UTILITIES SHOWN IS BASED ON
1 A
RECORD DRAWINGS AND FIELD LOCATES. ALL EXISTING
UTILITIES ARE SHOWN APPROXIMATE CONTRACTOR
SHALL VERIFY THE LOCATION OF ALL EXISTING UT0.RIES
AFFECTED BY THIS PROJECT PRIOR TO BEGINNING WORK.
{ �
........
F. FOR EROSION AND SEDNIENT CON7 ROL STANDARD NOTES,
�1 ;!
SEE DWG G-02.
r.....
-_.-...., . .. .....
PROTECT CATCH BASINS
KEY NOTES:
y `
-
ALL IN -STREAM WORK WILL OCCUR DURING THE DRY
MONTHS AND 'UNDER THE SUPERVISION OF
�.
'' QUALIFIED BIOLOGIST. CONTRACTORS
-LACE
DEVVATER STREAM CHANNEL AND DIVERT STREAM
FLOWS AROUND WORK AREA PRIOR TO ANY
\
IN -CHANNEL WORK. A COFFERDAM CONSTRUCTED
EAST RENTON OF SAND BAGS OR SIMILAR MATERIAL SHALL BE
LIFT STATION INSTALLED UPSTREAM AND DOWNSTREAM OF THE
•„
FACILITY WORK AREA. STREAM FLOW SHALL BE PUMPED
AROUND THEVVORKAREAANO DISC'-41RGED
DOWNSTREAM OF THE COFFERDAM. ANY SEEPAGE
INTO THE WORK AREA SHALL BE PUMPED AND
_
DISCHARGED INTO THE DEWATERING DISCHARGE
\ t
_ -
- LOCATION. REMOVE COFFERDAMS, PUMPS AND
PIPING AT COMPLETION OF WORK.
\
O2 SEE DWG C-06 FOR TEMPORARY STREAM CROSSING
%
DETAILS.
CONTRACTOR TO LEAVE SILT FENCE AND OTHER
`
EROSION CONTROL MEASURES IN MAPLEWOOD PARK
IN PLACE AT COMPLETION OF CONSTRUCTION.
_ ^--
EROSION CONTROL MEASURES TOBE MAINTAINED
\`
AND REMOVED BY OTHERS.
•`�� SILT FENCE
rMAPLEWOOD
e
/
ESTATES
.F
\�
a
I
CONSTRUCTION
i.. �
i \
ENTRANCE k1 �
e
f
Yf fi
i
AGENCY PERMIT SUBMITTAL
S k. - CITY .OF EAST RENTON LIFT STATION JJULY 2011
� RENTON ELIMINATION
Plannin916WdmBIPublic Works Dept TEMPORARY EROSION AND SEDIMENT C-02
CONTROL PLAN
A-6' ?<xj € ; f ! 'V-� I'y •' LIMITS OF {3'6F I 0 ~w• •Z� I i. S@:l`" CSC
CONSTRUGEION(TYP)•'.'? , ,.'43m l ' •.,..
\
,
y 4� 415
1. e / J 3"' ' k ..� 'y5 ', �'..... ��s.`" g., S"\ / `3: �'k, �,� t . s __ _ _
1 r�.
I
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i�y _ i' , T . _. / . may. ,. , r.. aNd•d%� pj — _ (.-i
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)
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I""'""�, r .✓ .? d:,y r,.. -,,.� l,:k i. t � x . �' f T 3 {1I ? <
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G
f
GENERAL NOTES:
-•
A.
EXISTING SURVEY CONDUCTED MAY 20091DENTIFIESTREES
-
61NCHES DBH AND LARGER. CONTRACTOR TO REMOVE ALL
TREES AND SHRUBBERY WITHIN LIMITS OF CONSTRUCTION.
WHERE TREES AND SHRUBBERY EXTEND OUTSIDE OF LIMITS
`
l
OF CONSI RUCTION REMOVE AS REQUIRED. BACKFILL WITH
NATNE MATERIAL. PROTECT AND RESTORE VEGETATION
PER SECT I0N 1-07.15(2) UNLESS OTHERWISE INDICAI ED.
B.
EAST RENTON LIFT STATION FACILITY SHALL BE FENCED TO
6 EXIST 60'0 MH 5314 079
PREVENT ENTRY AT ALL TIMES DURING CONSTRUCTION.
RIM EL = 395.92
INV IN=38417 M'1
C.
-
_AST RENTON LIFT STATION SHALL REMAIN IN SERVICE AT
INV OUT = 370.32 E
( )
ALL TIMES THR0:IGH COMPLETION OF THE PROJECT.
CONTRACTOR TO MAINTAIN DRIVABLE ACCESS TO THE
EXISTING EAST RENTON LIFT STATION AND ACCESS TO ALL
•
OF ITS FACILITIES FOR CITY PERSONNEL AT ALL TIMES.
;�
D.
RELOCATE ALL SIGNS AFFECTED BY CONSTRUCTION.
RE-INSTALL AT COMPLETION OF CONSTRUCTION.
t
KEY NOTES:
O
TEMPORARILY REMOVE ROCKS TO FACILITATE ACCESS.
/
REPLACE AT COMPLETION OF CONSTRUCTION.
TEMPORARILY RELOCATE FENCE TO FACILITATE .
INSTALLATION OF SEWER AND OTHER CONSTRUCTION
1 (
ACTIVITIES. REPLACE AT COMPLETION OF CONSTRUCTION.
5
REMOVE AND REPLACE WITH NEW SS MH. SEE CIVIL DWGS
40
FOR DETAILS.
REMOVE 8' SS AND INSTALL NEW SS. SEE CIVIL OWGS FOR
DETAILS.
ABANDON 12' SS. SEE CIVIL OWGS FOR DETAILS -
`
SEE DWG C-05 FOR MH MODIFICATIONS. REOVE INSIDE
\
D ROP CONNECTIONS PRIOR TO M H MODIFICATIONS.
1
70
REMOVE AND REPLACE MONUMENT PER CITY STD ?LAN
l
HR-04, SIM. EXTEND CONC RING TO GRADE, NO AC.
p 4 ,jy/
, Z I ".' t _,
`u
MONUMENT SHALL BE LOCATED AND RE-ESTABLISHED BY
ALICENSED SURVEYOR.
80
AC PAVEMENT RESTORATIOV LIMITS. SAWCUT MIN V--
CBEYOND
EDGE OF TRENCH.
AST RE NTON
4IFT
O
DECOMMISSION AND DEMO EXIST LIFT STATIOV PER
STATION
SUBSECTION 10.01738 AFTER SUBSTANTIAL COMPLETION
FACILITY
,/ - -
10
OF SEWER PIPELINE.
REMOVE WOOD FENCE, METAL GATE AND WOOD POSTS TO
"' - --•-
FACILITATE EQET ACCESS. SEE CIVIL DWGS FOR
.5 EXIST 60'0 MH 5314 080
REPLACEMENT.
RM EL=394.91
INV IN = 369.71(tM
11
SEE DWG C-04 FOR GRADE SCARIFICATION AND STRAW
INV IN=384.56(E)
REQUIREMENTS.
INV 0LTT�,�.369 71(N) _,"' —.,
; ....._
_Cn
Do
m
:' r
(rY) ` "' I K LIMITS OF CONSTRUCT
ION
y i
`/
^ LIMBS Of CO TqN (TYP) ..� 'T€� !'_ 'l-,i r ; a f
Awl
--;_
-i - -
"¢c A
taemPLSE � � %�4r s c . s• �.. _
is .... _. ._ _..
........ x ... —,.
/> r 3 EXISTMH5314086
RIM EL=375.95
B, ,ST`}.: u. {•3'3 S.&IE OUT=367.60(S)
EXIST MH 5314 090
RIM EL = 374.53
INV IN=365.03 (N;E,W)
INV OUT=365.03(S)
BURIED UT ILITIES N AREA
PLEASE CALL BEFORE YOU DIG
1.800424.5555
A PUN
FILE: 8235C00-C-100
,
4�fi1
'�'".._.-.,
_ ,-
tom. t5. .4�:1
FV� i•'�
AGENCY PERMIT SUBMITTAL
! q PARKSIDE
COURT GENERAL NOTES:
TIFIES
ZO N = 131649 .5 - i-- E 1315495.86 A TREES 6 INCHES DBH. EXISTING SURVEY OAND LARGER. NOT ALLTED MAY 2009 TREES BEES AND
C 07
E = 1316495.53SHRUBBERY ARE SHOWN. LIMITS OF WETLANDS AND
_ i r� STREAMS ARE APPROXIMATE.
I / B WITHIALL N THE LIMITS IM TS OF CONSTRUCUCTION ACTIVITIES TION AND AVOLL BE ID
NED
SEE SHEET C-05 T � 3
_... _... - .. _.. .......... ..._ .. ,_ .. _ _' DIRECT WETLAND DISTURBANCE.
_ �- _�---------
S SHALL BE
STORED
N = 178279. , C CONCLUSION OF. ALL DISTURBED T HEAPROJECT PER ECONTRACT
T THE
- I / \ I 20'PERMANENT / I I
f N = 177B2B.7B \ EASEMENT (TYP) E = 1316594.08 I I DOCUMENTS.
E = 1316596.21 \ I I I # i I \ I I D. EAST RENTON LIFT STATION SHALL REMAIN IN SERVICE
,
j SEE SHEET -:C-06 15' SS 3 5 Y ' AT ALL TIMES THROUGH COMPLETION OF THE
COB �a ! PROJECT.CONTRACTOR TO MAINTAIN DRIVABLE ACCESS
{ LIMITS OF,. yh'.ya "z 'Y `e' ` j'' _ -�; i s,..-! 7 I 2 I TO THE EXISTING EAST RENTON LIFT STATION AND
b
CONSTRUCTION ',Y 5 j�.l r -%} ;� /—-sA, \ I I Z_ .__-... ..._ .._._.._. ACCESS TO ALL OF ITS FACILITIES FOR CITY PERSONNEL
... (TYP) .. _._..__' ... �' a... =;✓ ..—.l !';, _ I _ AT ALL TIMES
.... ^` ... ... ... _.,„„,,,., E. LOCATION OF EXISTING UTILITIES SHOWN IS BASED ON
x
RECORD DRAWINGS AND FIELD LOCATES ALL EXISTING
+50 4 00 3*50 `-3 00 , 2+50 2+00 `t+50 �:1*pp
�< _ _ 12` S 15 UTILITIES ARE SHOWN APPROXIMATE CONTRACTOR
I 1 / 10'CONSTRUCTION / \ 50 'T'"� Y� SHALL VERIFY THE LOCATION OF ALL EXISTING UTILITIES
5 _ Y H
EASEMENT (TYP,) µ.'ma AFFECTED B THIS PROJECT PRIOR TO BEGINNING
- 1
�/� WORK.
-�y
N - i77 2A -�,"", _ F. INSTALL BURIED PIPE IN ACCORDANCE WITH CITY
t / _ 929.97 E 13 6fi24 003
1 / 1 / i� •^ ""--- �� R��' i ` 1I STANDARD PLAN 405. BACKFILL PIPELINE BETWEEN STA
I N = 17742296 / I / / 6' j 0+75 AND STA 3+50 AND STA B+60
• u.i +`- i ILL ALL
E=1316764.21
.._.N - 177453:38 __ ..... . .... ........ _. _�� :., ,., ; ,,;,. ..✓ OTHER PIPELINE
WITH H NA VEOMATERIAL iW B WHERE
I
f
( i E = 1316765.16/— SUITABLE, REMOVE ROCKS AND OTHER DEBRIS 4 INCHES
AND LARGER. OTHERWISE, BACKFILL WITH GRAVEL
- - - SEE SHEET CC — — — — � BORROW. COMPACT TO 92%MDD BETWEEN STA 1+00
LL i / ,{�/ s� "L ' c'� EAST RENTON AND STA 8+58, AND 95% MOD PER ASTM D1557 FOR ALL
/�—{. / I /l } -./; �j's� Imo''« ; a LIFT STATION OTHER PIPELINE.
t / `�` .�' FACILITY
�c / -- / I G. PIPELINE EXCAVATIONS SHALL BE CLOSED UP OR
BRIAR HILLS N= 78289.76
/1316727.70 i,r `-t / EACH WORK DAY, SECTION 1-07. () T THE END OF
No.4
N = 117102.91 —f _. { 'k,.., .1,. 3�� i i , \: < N = t 78321.6t -..
gg I PROTECTED PER SE 23 1 A
N=t77408.22 �) _.. t
r'
y
fL
E=1316777.18 I Op z at y5 .,.€,'.' ,�'~.� h{, �/; E=1316728.101.
E = 1316781.00 _-.....,,
EYy - _ SEE PLAN FOR BYPASS PUMPING DETAILS.
w _
ST ART CREEK � -
vC
�� KEY
TEMPORARY CHAIN LINK GATES WITH DO NOT
� � ENTER. CONSTRUCTIONAT (?:.'s I E E SIGNSALL SITE ACCESS
_..._`�....._ _.... j / : y`�� �i1,,>9{ ' Y•.^ LOCATIONS. LOCK GATES AT THE END OF EACH WORK
.�_ 148th PL SE -" .._«- _. ,�,,. .p;. - T - ,-..� :.
x'-
_ a , ..�€ ::. ,�.::.,.. — _4��/ �:, ti> _.yam--�a..:._ �z�
,'.. ..; . .. 4 � DAY.
�`'°1I15;, x f`•, ,+-- ---..g 9500-_.— ? • :: •- 'L' „- ' ` 4 3 PROVIDE TRACER WIRE AND UNDERGROUND WARNING
/ - ...
,
.. TAPE PER SUB -SECTION 10.15052. SEE DWGS C-058 C-06
w
i
1 - ••, . , . � r — - _ _ ( FOR TRACING WIRE STATION DETAILS.
15"SS
UPON FINAL COMPLETION OF CONSTRUCTION,
N = 177407.03
E = 1316818.97 �177612.SM I � :'; ,.� i � .-�..'°u,_ �-' { / �:. 3„I_ a � 1 CONTRACTOR TO SCARIFY EXIST GRADE FROM STA 1+00
1316819.79 TO PAVEMENT AT 148TH PL SE
i I N = 177449.14 _ - --"" -"` ..::� � T"C € % � � \ � / CONSTRUCTION AND COVER WITH 21INCHES ICERTIIF CERTIFIED
y
j.-. I \•'t,.� %s i n ;� I ,�/� MAPLEWOOD WEED -FREE STRAW.
E _ 1316844.96 I ;
' - N=177422.27 '^i ESTATES
1 - I I .---- I x' �yY ` } ., - O PROVIDE UNDERGROUND WARNING TAPE PER
a i E _ '3168d4.22
� — — SUB -SECTION 1015052
W;
�F n
1
WETLANDS (TYP)
I
M , AGENCY PERMIT SUBMITTAL
Y PACE ENGINEERS, INC
1" 40' _„_ v EAST RENTON LIFT STATION
y ,w.r..+��" C1 s CITY
IT I 0 y JULV 2011
T. I I ELIMINATION
RENTON
BURIED UTILITIES WARE, R�r6sfcs`" �' DATUM
PLEASE CALL BEFORE YOU DIG �9SfONAL W a"erns PlanninglBuildiog/Public Works Dept. SITE AND PIPING PLAN � C-04
1.BD0.424.5555 NO. REVISION BY DATE APPR o.
Z
f
11'25' HOR7 BEND
/
STA 4+91.01
N =177901.027
E =131661639
25'VERT BEND
4+36
N 77956.04
s
/ h
1 t 25' VERT BEND
STA4N0
3
TEMPORARY
li f• p�. i�
>_
` E�=1316616.05.
F',1` ) ,/
N "7798203
-
E �31.561590
I
'k
'�'
-
STR SNG
C-07
co
w n
rn
Ln
O
a+00 \
3+50 ✓" .
7
�t 3+00 .. ...> 2+50 . 2 1 1+50
a
J- --i
m
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m
.:.
7t
:
s
CP
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r
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t
711
t
1
>4,
/
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PLAN
SCALE: 1' = 20'
FILE: 8235COO-C-100
GENERAL NOTES:
A. INSTALL BURIED PIPE IN ACCORDANCE WITH CRY
STANDARD PLAN 405. BACKF ILL PIPELINE BETWEEN STA
0+75 AND STA 3+50 AND STA 8+60 AND STA 10+30 WITH
GRAVEL BORROW PER SECTION 9-03.14(1). BACKFILL ALL
OTHER PIPELINE WITH NATIVE MATERIAL WHERE SUITABLE.
REMOVE ROCKS AND OTHER DEBRIS 4 INCHES AND
LARGER. OTHER%NISE, BACKFILL WITH GRAVEL BORROW.
COMPACT TO 92%MDD BETWEEN STA 1+00 AND STA 8+58,
AND 95%MDD PER ASTM 01557 FOR ALL OTHER PIPELINE.
B. LIMIT PVC JOINT DEFLECTION TO A MAX OF HALF MFR'S
RECOMMENDED JOINT DEFLECTION.
C. PIPELINE EXCAVATIONS SHALL BE CLOSED UP OR
PROTECTED PER SECTION 1-07.23(1) AT THE END OF EACH
WORK DAY.
EXIST 60 0 MH 5314079
STA 0 75.77
L
......... >._..
^KEY
NOTES:
ABANDONED 12" SS. FILL WITH SAND
2
V
CONTRACTOR TO VERIFY DEPTH BY POTHOLE PR TO
O LE PRIOR
.__
.. ..__. _.
COMMENCING CONSTRUCTION.
CORE DRILL AND CONNECT NEW SANITARYSEWER PIPING
I j
WITH KOR-N-SEAL BOOT WITH SST CONNECTOR, OR EQUAL.
$ O
g
REMOVE MH CONE TO FACILITATE CONSTRUCTION
ACTIVITIES AS READ. REINSTALL TO MATCH EXISTING.
- 1..."'f
.........
SEAL WATER TIGHT. -
CHANNEL PER CITY STD PLAN 400.1.
INSTALL HYDROPHILIC \NATERSTOP-IORIZONTALLY
AROUND INSIDE FACE OF EXIST MH, MIN 12' BELOW INV OF
CHANNEL, MC-201 OMN BY ADEKA, HYDROTITE CJ-0725.3K BY
\
GREENSTREAK, OR EQUAL. ADHERE WATERSTOP TO EXIST
12" SS
MH USING A SINGLE COMPONENT WATER -SWELLING
SEALANT, ULTRA SEAL P-201 BY AOEKA, LEAKMASTER LV-1
BY GREENSTREAK, OR EQUAL. AFTER CONC HAS TAKEN
INITIAL SET, SEAL JOINT VVITH SYNTHETIC RUBBER SEALING
COMPOUND SIKAFLEX 2c NS OR SL. OR EQUAL PER S1P,8
1
EAST RENTON
- EXIST 60'0 MH 5314 080
LIFT STATION
STA 0+00.00
FACILITY
75.77 LF
'i
.2' PVC SD.R 35
i1
6
12' SS � 0.003
395
390
5 6
_. ,
385
FILL WIT.
L,
CONC (TYP 2)
38D
i
5
375
z'4r (nP)
370
w 365
n m t N
oz o
360
STA 1+00 STA 0+50 STA 0+00
AGENCY PERMIT SUBMITTAL
•`� CITY OF EAST RENTON LIFT STATION wDJLY2o,1
-� RENTON ELIMINATION
Plannhg�BwamgrPuMic Works Dept PIPING PLAN AND PROFILE — STA 0+00 - STA 5+00 C-05
GENERAL NOTES:
i
A. INSTALL BURIED PIPE IN
C
AC DANCE VVITH CITY STANDARD
PLAN Q BACKFILL PIPELINE
Q
BETWEEN STAO.75 AND STA3+50
r
ANDSTA8+60ANOSTA10+30WITH
T
GRAVEL BORROW PER SECTION
9-03.14(1). BACKFILL ALL OTHER
PIPELINEWITHNATrVEMATERIAL
------- ----
------ ------ . .......
WHERE SUITABLE. REMOVE ROCKS
11.25*
HORZ BEND
STA 7+91.99
AND OTHER DEBRIS 4INCHES AND
LARGER. OTHERVVISE,BACKFILL
N 177642.663
f +n
CD
�,Vrr H GRAVEL BORROW. COMPACT
�.VE
RLAY AND GRIND
E 1316755.79
CD
92% MDD BETWEEN STA 1100 AND
�
s.
STA 8 -58, AND 95% MCID PER AST
D1557 FOR ALL OTHER PIPELINE.
+
um 11.25'VERT
BEND
u-0
STA 8+00
N.177638.25
B. LIMIT PVCJOINTDEFLECTION TOA
MAX OF HALF mrWS RECOMMENDED
�V
E = 1316762+48
15* SS
r.
n
Fri
JOINT DEFLECTION.
1..25*
VERT'BEND
STA 8-25.S
N = 177623.6
-E -131k784.�
X
lb�
PIPELIN - EXCAVATIONS SHALL BE
CLOSED UP OR PROTECTED PER
SECTION1-07.23(l) AT THE END OF
EACH WORK DAY.
X
11.25ZBEMD
.... . ....... . . ........ . . ....... .
-- . ......... . . .....
to
STA 5-67.86
N -177825+73
E 6631.84
KEY NOTES:
2 5
V
...... . .. ... . . .......
4 (TYP)
'P
C.NTlACT.R T.VER11Y DEPTH BY
POTHOLE PRIOR TO COMMENCING
QW
11.25* HORZ BEND
11.25* HORZ BEND
CONSTRUCTtON.
CUT UPSIZED PENETRATION WITH
EXIST
. . ....
77
11;.12 2
STAG+46.91'_"
POWER SAW, NO HAMMERING
C200
N -17 :2
N - 177752.$7�_L_;
ALLOWED. CONNECT NEW
_STA 10
vxc Typ STATION
r2
E 1316699.54
E - 1315662.55
SANITARY SEVVER PIPING WITH NPG
WATERSTOP GROUTING RING, OR
AL. FILL VOID %lVrrHGROlLrT.
EQUAL
6
INSTALL NEW E.-SANITARY
MANTOLIEPER CITY STD P N
V
C�07
3 6010
MIT 5314 086
STA 8157.86
\ /
400.1.
p
/
4 AT COMPLETION OF
C ONSTRUCTION, ?ROVIDE 1 1r2
A;
... ......
C,
e.:,
OVERLAY FOR ALL PAVEMENT
WFTHI*4 LIMITS OF CONSTRUCTION.
GRIND EXIST AC 5 FEET F ROM ALL
CURBS.
.0,
5> REMOVE CHANNELING 70 MATCH
UPSCED PIPE OiA. REC
PER CITY STD PLAN 400H.1.ASIM NNEL
CHANNEL ONLY. AS REDD.
TALL DOUBLE
PLAN
CHAIN -LINK GATE AND FENCE TO
SCALE: 120'
CURB EDGE PER WSDOT STD PLAN
FILE: 8235C00-C-100
L-30.10-00 AND VVSDOT SECTION
-12.
172.31 LF
I
109.66 LF
250.01 LF
385
.
z z
APPROXITE
MA
385
0...
. ...
P, 7�2
EXISTING
GRADE
wr
380
P)
380
APPROXIMATE EXISTING GRADE
�lov
C?
375
.. .
..... . .
w
w 375
. . .........
ul
LU
V)
370
.. . ................ .. ... ........
. . ............ ....... . . . .. ..... . ........ ............
. ................... . .. .
.......... .. ..... .....
370
+
15l SS @0009.
i
365
1 ...
.............................
ly SS @().0143
................. - ...........
. . ........ .
................ ...................................................................
...............
. ........ ......... ... . .. . . . ............... .............. ....
U, ..
LLI 365
2 5
.9 LLJ
L)
<
360
w
Lu
360
— -------
w
1 S' PVC SO R 35
co
15*.WC SDR 35
w IZ
K K.
355
35
lz
0 -0
350
350
STA 10+50 STA 10+00
STA 9+50 STA 9+00
STA 8+50
STA 8+00 STA 7+511 STA 7+00
PROFILE
STA 6+50 STA 6+00 STA 5+50
STA 5+00
q'INK7 carmllfo
It.
Or
'a
naT.,/
SCALE: HORV:i-.20'VERT:.5'
FILE, 8235COO-C-100
___
PACE ENGINEERS, INC
AS INDICATED
- ,
„woo
AGENCY PERMIT
A- M CITY OF EAST RENTON LIFT STATION
7K RENTON ELIMINATION
SUBMITTAL
JULY 2011
"ou
BURIED UTILITIES NAREA
PLEASE CALL BEFORE YOL DIG
EDL
_ 1 -
DATUM
PlannhIglBuildng/Public Works Dept PIPING PLAN AND PROFILE - STA 5+00 - STA 10+31 C-06
1 .800.424,5555
NO. REVISION
BY DATE
APPR
r4 07-07. , "; 5:: O
BURIED UTILITIES IN AREA
PLEASE CALL BEFORE YOU DIG
1.800.424.5555
` 3-INCHES CLASS 3/4"HMA
..�.., �....:..:.....:.._: 7
PER WSDOT SECTION 9-03.8
6 3-INCHES CSTC PER WSDOT
SECTION 9-03.9 (3)
!fir
6 N CSBC PER WSDOT
SECTION
— � SECTION 9-03.9 (3)
2 NEW AC PAVEMENT
C-06 SCALE: 3/4" = V-Ir
\ (TYP) FILE: C-07.dwg
SLOPE I%1%
(TYP)
EXIST 60"0
MH 5314 079
12"SS
K11 MANHOLE CHANNELING COARSE
C-OS SCALE: 314" = 1'-0" AGGREGATE 1/2^ DW OF PIPE OR AS
FILE: 8235C70-C-08 NEEDED TO SUPPORT
EXIST GRADE LOADS, WHICHEVER IS
GREATER
0 00 0 0 0 0 0 -0 0 0
Pl--GEE�WEXXTIILE
(�- FABRIC
0 0 V O O III I-1:
QUARRY SPALL
a-1 I =I I__ _ „—I ( III�I�III-III_I —�' TEMPORARY 8.0 PIPE
�illl-III=:II= CULVERT
C SECTION 6
- SCALE: 1 1/2' =
FILE: 8235C10-C-08
KEY NOTES:
O1 TEMPORARY BYPASS PUMPING MANHOLE. MAX
NOISE OF TEMPORARY BYPASS SYSTEM SHALL BE
45 dBa AT NEAREST RESIDENTIAL PROPERTY LINE.
FIELD VERIFY DIAMETER OF MANHOLE.
OLOCATION AND DATA FOR EXISTING MANHOLE IS
BASED ON CITY OF RENTON GIS DATA AND IS
APPROXIMATE. CONTRACTOR TO FIELD VERIFY.
O CHANNEL WITH CONCRETE. CHANNEL HEIGHT =12
INCHES.
4O BYPASS PUMPING DISCHARGE LOCATION. ROUTE
PIPING TO INVERT OF EMERGENCY STORAGE
WELL. TEMPORARILY SUPPORT PIPING AS READ.
OS CONSTRUCTION OF TEMPORARY STREAM
CROSSING IS PROVIDED TO FACILITATE
EQUIPMENT ACCESS ALONG PIPELINE ALIGNMENT.
CONTRACTOR TO INSTALL PER GENERAL DETAILS
SHOWN ON THE DWGS AND PER BEST
MANAGEMENT PRACTICES. SUBMIT TEMPORARY
STREAM CROSSING TO ENGINEER FOR APPROVAL
PRIOR TO INSTALLATION. REMOVE ALL MATERIALS
FOR TEMPORARY STREAM CROSSING PRIOR TO
STREAMBANK RESTORATION.
OCOMPACT CSBC AND CSTC TO 95% MDD PER ASTM
D 1557.
OCOMPACT HMA TO AT LEAST 91%OF ITS MAXIMUM
THEORETICAL SPECIFIC GRAVITY (RICE DENSITY).
OCONTRACTOR TO COORDINATE WITH LOCAL FICA
FOR STORM WATER DETENTION POND ACCESS.
OTEMPORARY BYPASS PIPING. CONTRACTOR TO
ROUTE ABOVE GROUND AND SUPPORT AS
REQUIRED.
10 SEE STREAM DEWATERING PLAN FOR COFFERDAM
DETAILS. ADD VISQUEEN SHEET OR EQUIVALENT
TO FUNNEL STREAM FLOW.
t 1 VISQUEEN SHEET OR EQUIVALENT AT OUTLET OF
CULVERT.
12 EXTEND CLSM TO 5 FEET OUTSIDE OF STREAM.
13 INSTALL CONCRETE CUT-OFF WALL AT END OF
CLSM.
o 3 �\ Ll
00 0OOoOr o0000
0 0 0 0 0 0 O°Or�. GAOL' O O O O O O JJr0 �'• O.,000
C O C
Q
'JJy0 0�0• O 0 O 7 J �O O� J^�L
cr
FILE: 8235CiO-C-D8 " AGENCY PERMIT SUBMITTAL
PLAN
CONSTRUCTION ENTRANCE DET
SCALE: NTS
FILE: 8235C10-C-08
INSTALL TEMPORARY GRAVEL BEFORE
GRADING PHASE OF PROJECT,
REMOVE PRIOR TO PAVEMENT
INSTALLATION
INSTALL TEMPORARY FILTER FABRIC
BETWEEN FRAME AND GRATE OF ALL
CATCH BASINS AND INLETS INSIDE
OR ADJACENT TO DISTURBED AREAS.
A
$ROLLS.
FILTER FABRIC MATERIAL 60"WIDE
USE STAPLES OR WIRE
RINGS TO ATTACH FABRIC TO WIRE
2" BY 2" BY 14 GA. WIRED
FABRIC OR EQU V. 4
j
wf FILTER FABRIC
x.....�..._>_.>.__., MATERIAL
02"BY 2"BY 14 GA. WIRE
FABRIC OR EQUIV.
BURY BOTTOM OF FILT R MATER1Al )
IN B' BY 12' TRENCH _ =)
6' MAX. it
2 2" BY 4" WOOD POST
O2" BY 4' WOOD POSTS, STANDARD OR PROVIDE 3/4"-1.5 ASHED GRAVEL
BETTER OR EOUAL ALTERNATE O BACKFILL IN TRENCH AND ON BOTH SIDES
SECTION OF FILTER FENCE FABRIC ON THE
SURFACE
2 SILT FENCE DETAIL AND NOTES
C-02 SCALE: NTS
FILE: 8235C10-C-08
SACKS SHALL BE PI JUTE BURLAP
OR APPROVED ALTERNATE FILLED
WITH 48 TO 55 LBS. OF PEA GRAVEL
BACKFILL FOR DRAINS.
INSTALL APPROXIMATELY 3 FEET
ABOVE CHANNEL INVERT. ALIGN
LOW POINT IN DAM WITH CENTER
OF CHANNEL.
ADD VISQUEEN -
THROUGH FILLED
BURLAP SACK STACK
NOTE: ONLY INSTALL .�� f,
TEMPORARY GRAVEL AROUND PLACE SACKS FIRMLY
CATCH BASINS IN UNPAVED /� <. . /�\ AGAINST GROUND LINE
AREAS. USE FILTER FABRIC TO y\\
BASINS IN PAVED AREAS. AND ADJACENT SACKS.
PROTECT EXISTING CATCH //
PLAN SECTION A
PLAN' K4"�STREAM DEWATERING COFFERDAM DETAI
TEMPORARY CATCH BASIN PROTECTION G-0B SCALE: NTS
FILE: 8235C10-C-08
2 SCALE: NTS
FILE: 8235C10-C-08
INSTALL ROUNDED COBBLE
AND WASH SAND MIX TO
4" - 6" MOUND DEPTH OF 12" MATCH EX
GRADE
\%
18" TOPSOIL. MATCH 5 \ ; _ \j\\� f\�� c
t' C O� /�� 15 BACKFILL ONLY
EXISTING GRADE
CLSM PER WSDOT\
SECTION 2-09.3(1)E
NA
� TRENCH BACKFILL DETAIL (TYP)
C-04 STA 1 *00 -STAB*63 NTS
e
f E SAL
5309 SNilshole Ave. NW
Seattle, WA 98107
P:(206)789-9658
F: 1206 789-9684
BURIED UTILITIES IN AREA
PLEASE CALL BEFORE YOU DIG
1.800.424.5555
NATIVE SOIL
FLOWLINE
TRENCH BACKFILL STREAM AT CROSSING
DETAIL-(TYP) - - - - NTS-
GENERAL NOTES:
A. FILTER FABRIC FENCES SHALL BE REMOVED WHEN THEY HAVE SERVED THEIR USEFUL PURPOSE, BUT NOT BEFORE
THE UPSLOPE AREA HAS BEEN PERMANENTLY STABILIZED.
B. FILTER FABRIC FENCES SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND AT LEAST DAILY DURING
PROLONGED RAINFALL. ANY REQUIRED REPAIRS SHALL BE MADE IMMEDIATELY.
KEY NOTES:
Oj THE FILTER FABRIC SHALL BE PURCHASED IN A CONTINUOUS ROLL CUT TO THE LENGTH OF THE BARRIER TO AVOID USE OF
JOINTS. WHEN JOINTS ARE NECESSARY, FILTER CLOTH SHALL BE SPLICED TOGETHER ONLY AT A SUPPORT POST, WITH A
MINIMUM 6-INCH OVERLAP, AND BOTH ENDS SECURELY FASTENED TO THE POST.
OTHE FILTER FABRIC FENCE SHALL BE INSTALLED TO FOLLOW THE CONTOURS (WHERE FEASIBLE). THE FENCE POSTS SHALL
BE SPACED A MAXIMUM OF 6 FEET APART AND DRIVEN SECURELY INTO THE GROUND (MINIMUM OF 30INCHES)-
OA TRENCH SHALL BE EXCAVATED, ROUGHLY 8 INCHES WIDE AND 12 INCHES DEEP, UPSLOPE AND ADJACENT TO THE WOOD
POST TO ALLOW THE FILTER FABRIC TO BE BURIED.
OWHEN STANDARD STRENGTH FILTER FABRIC IS USED, A WIRE MESH SUPPORT FENCE SHALL BE FASTENED SECURELY TO
THE UPSLOPE SIDE OF THE POSTS USING HEAVY-DUTY WIRE STAPLES AT LEAST 1 INCH LONG, TIE WIRES OR HOG RINGS.
THE WIRE SHALL EXTEND INTO THE TRENCH A MINIMUM OF 4 INCHES AND SHALL NOT EXTEND MORE THAN 36 INCHES
ABOVE THE ORIGINAL GROUND SURFACE.
OS THE STANDARD STRENGTH FILTER FABRIC SHALL BE STAPLED OR WIRED THE FENCE, AND W INCHES OF THE FABRIC SHALL
BE EXTENDED INTO THE TRENCH. THE FABRIC SHALL NOT EXTEND MORE THAN 36 INCHES ABOVE THE ORIGINAL GROUND
SURFACE. FILTER FABRIC SHALL NOT BE STAPLED TO EXISTING TREES.
OWHEN EXTRA -STRENGTH FILTER FABRIC AND CLOSER POST SPACING ARE USED, THE WIRE MESH SUPPORT FENCE MAY BE
ELIMINATED. IN SUCH A CASE, THE FILTER FABRIC IS STAPLED OR WIRED DIRECTLY TO THE POSTS.
(7 j THE TRENCH SHALL BE BACKFILLED WITH 314-INCH MINIMUM DIAMETER WASHED GRAVEL.
8 INSTALL UPSTREAM SCREENED DIVERSION PUMP. PUMP SHALL, AT A MINIMUM, BE A 61NCH GAS POWERED TRASH PUMP,
SUFFICIENT TO HANDLE EXPECTED STREAM FLOWS OF 0.5 TO 3 CUBIC FEET PER SECOND INCLUDING FLEXIBLE PIPE
SYSTEM.
OSELECT DISCHARGE POINT DOWNSTREAM OF IMPACTED AREA TO AVOID EROSION. LINE DISCHARGE AREA WITH VISQUEEN
OR EQUIVALENT TO DISSIPATE FLOW ENERGY AND PREVENT CHANNEL SCOUR.
<8> INSTALL UPSTREAM COFFERDAM WITH LOW POINT ALIGNED WITH CENTER OF ACTIVE CHANNEL. COORD LOCATION WITH
TEMPORARY STREAM CROSSING.
11 INSTALL DOWNSTREAM COFFERDAM BELOW IMPACTED AREA.
12 COMPLETE ALL IN WATER WORK, GRADE SITE AND INSTALL CDIR LOGS OR COIR BLANKET WHILE CHANNEL IS DE -WATERED.
WORK SHALL BE COMPLETED AFTER INSTALLATION OF PIPELINE AND DURING REMOVAL OF TEMPORARY STREAM
CROSSING.
<3> WHERE DEWATERING PIPE CROSSES EQUIPMENT CROSSING OR INTERFERES WITH CONSTRUCTION, BURY PIPE IN A
TRENCH AND COVER WITH STEEL PLATES,
14 USE HIGH VISIBILITY FENCING TO DELINEATE IN -STREAM LIMIT OF WORK.
<3> PIPE BEDDING AND BACKFILL PER CITY STD PLAN 405, NATIVE BACKFILL WHERE INDICATED-
.. -
'
n
— — —r' \ \ y\.. \ \ — — —
12
11 P
14s
A_ STREAM DEWATERING PLAN
C-02 SCALE: 1" = 10'-0"
FILE: 8235C0p-C-100
AGENCY PERMIT SUBMITTAL
Planting Zone 1: Forested Buffer Enhancement
Scientific Name
Common Name
Typa
Spacing Ptsrlt Numbor Spocial lnatruc#ions
,.
`6
Acirmaerophylum
Bg)eaf maple
1 gal
It o.c.
32
Afnus rubs
1Rd tide,
1 gal
6 If C.C.
16
PbeudOti ug'a rr !nzieslr
D-gias fir
11921
fi 11 e.c.
55
Total Trees
103
w�.
Manama nervosa
Low Oregon grape
11 gal
4 ft 0-c.
18
OenYeria ce—i7orr—
Indian &in
1 gal
4 ft o.c.
18
Physocerpus caprtatus
Pacific mriebark
I gai
4 ft o.c.
18
Polys6Ulummenitum
Sward Fern
1 gat
4 ft o.c.
36
Rubes spectabii's
Salrlonberry
I gal
4 ft o.c.
18
S)vnpnA'icarpos afous
Snowberry
1 gal
4 ft o.c.
16
Total Shrubs
125
Total Area (square feet) 5,708
TREES
(6' O.C. TYP.)
SHRUBS (4' O.C.
TYPICAL 900 S
FOOT AREA
COMMONNAME
Tt - Douglas fa
T2 - Big leaf maple
T3 - Red altler 3
S7 - Safmonberry
S2 - Indian plum L-02
S3 - Sword fern
S4 - Snowberry
S5 - Low Oregon grape
S6 - Pacific ninebark
TYPICAL PLANTING COMPOSITION IN A 900
SQUARE FOOT AREA TO CONSIST OF
APPROX. 16 TREES AND 20 SHRUBS.
TYPICAL FOREST BUFFER ENHANCEMENT PLANTING DETAIL
L-01 NTS
r ESA
5309 S hale, le NW
Seattle, WA Avea NW
P: (206) 789-9658
F: (206)789-9684
BURIED UTILITIES IN AREA
PLEASE CALL BEFORE YOU DIC
1.800.424.5555
A --P
\,rlj SCLAN
ALE: 1" = 30'
FILE: 8235CD0-L-01
Planting Zone 2: Shrub Buffer Enhancement
Scientific fame
common fame
Type
ISpacing
I Plant Number
Special Instructions
rug
�54
Mahonia nervosa
Low Oregon grape
1 gal
4 ft o.c.
00mleria cerasitonrus
ImJian plum
1031
4 ft o.c.
54
Physocarpus capiratus
Pacific ninebark
1 gal
4 ft o.c.
54
R01W,chum rwn,tum
Sw oid fern
1931
4 ft o.c,
71
Rebus spectabihs
Saimonberry
1 gal
4 ft o.c.
71
Sym~carpos albus
Snow berry
1 gal
4 ft oz.
54
Total Shrubs
357
Total Area (square feet) 12,557
eSHRUBS
(4' O.C. TYP.)
SEED BETWEEN /�
SHRUB CLUSTERS (2 }
GROUP LIKE SPECIES
TOGETHER
PJ.Ati
TYPiCAL900 SQUARE _ — TYPICAL PLANTING COMPOSITION IN A 900 SQUARE
FOOT AREA FOOT AREA TO CONSIST OF 56 SHRUBS.
PLANT SHRUBS IN NATURAL GROUPINGS TO CREATE
WILDLIFE HABITAT ZONES.
TYPICAL SHRUB BUFFER ENHANCEMENT PLANTING DETAIL
L-01 NTS
KEY
�1 ti.'l
WOODCHIP PATH (2736 SF) O1
FORESTED BUFFER ENHANCEMENT (5708 SF)
(PLANTING ZONE 1) L-01
SHRUB 8 HYDR.SrE. BUFFER ENHANCEMENT (12,557 SF) 2
L-01
qqq
(PLANTING ZONE 2)
STREAM BANK RESTORATION SF)
e
(202
(PLANTING ZONE 3) L-01
!
r h M
SEED MIX (745 SF) O
(PLANTING ZONE 4)
I
{rI
t
GENERAL NOTES:
A. MAINTAIN EXISTING PATH NETWORK. COVER WITH 4"
WOODCHIP MULCH AT TIME OF PLANTING.
i` B. PLANTING SHALL EXTEND TO LIMITS OF CONSTRUCTION,
AS SHOWN ON THE CIVIL DWGS.
KEY NOTES:
OWOODCHIP MULCH SHALL BE APPLIED AROUND PLANTS, SEE
PLAN SHEET L-02.
SEED MIX SHALL BE APPLIED AT A RATE OF 40 LBS PER ACRE.
Planting Zone 3 -Stream Bank Restoration
Scientific Name icomrri Name ITyp.
Spacing
I Plant Number speciatInstructions
corpus 5encea
Red -osier dog. ood
Livestake
21to.c.
20
Stith lucida
Pacific w4dw
Livestake
2ft o.e..
13
Satir sdctrensis
S63 w 11cw
Lwestake
2It o.e
18
Total Shrubs
61
Total Area {54uaro fee')
202
30'
L-02
LIVE STAKE
SHRUBS (TYP.)
E
7VPICAL 900 �
SQUARE FOOT AREA
COMMONNAME
S1 - Red—ler dogwood
S2 - Sitka willow
S3 - Pacifc willow
TYPICAL PLANTING
COMPOSITION IN A 900 SQUARE
FOOT AREA TO CONSIST OF
APPROX 225 SHRUBS.
NOTE: EACH CIRCLE
REPRESENTS PLANTS.
DECREASINGDECREASING
ELEVATION (TYP) eLAM ELEVATION (TYP.)
/ 3 \TYPICAL STREAM BANK RESTORATION PLANTING DETAIL
L-01 NTS
AGENCY PERMIT SUBMITTAL
PLANT LIVE STAKES THROUGH COIR
BLANKET ON STEEP SLOPE RIPARIAN
AREA
PLANT TREES AND O
SHRUBS IN UPLAND AREA
INSTALL COIR O
BLANKET ON
SLOPE PER CITY
STANDARD PLAN
213.10
QSTREAM BANK PLANTING SECTION (TYP)
L-01 NTS
r ESA
5309 S Seattle.
NW
Seatlle, WA Ave.e.98107
NW
P:(206)789-9658
F: (206)789-9684
A
@20",
BURIED UTILITIES IN AREA
PLEASE CALL BEFORE YOU DIG
1.WO.424.5555 mnnm� n rn
PLANT LIVE, DORMANT STAKES BETWEEN
0.5 AND 1 INCH IN DIAMETER
4" LAYER OF
WOODCHIP MULCH
z i
E \
SQUARE CUT
MINIMUM OF 2 BUDS
EXPOSED
MAKE PILOT HOLES IN
EXISTING SOIL WITH REBAR.
TAMP SOIL AROUND LIVE
STAKES.
ANGLE CUT AT 45
DEGREES
12' O.C. SPACING (TYP) 1 2' O.C. SPACING (TYP)
SECTION
LIVE STAKE PLANTING DETAIL (TYP)
L-01 NTS
SCARIFY ROOTBALI
ROOTS AND,
It
CZm
n=0
E OF ROOTBALL, EXTEND 6' BEYOND
NG BASIN CIRCLE
FINISH
GRADE
BACKFILL WITH NATIVE SOIL ONLY
SCARIFY EDGES OF PLANTING HOLE TO ALLOW FOR
ROOT PENETRATION
BOTTOM OF ROOTBALL RESTING ON
3X ROOTBALL DIAMETER UNDISTURBED SOIL
secnoN
31 TREE/SHRUB PLANTING DETAIL (TYP)-
NTS
PACE ENGINEERS. INC E` ,f CITY OF
_ AS INDICATED '
GP 7K RENTON
DATUM
"DSN Planning/Building/Public Works Dept.
NO. REVISION BY DATE APPR P
GENERAL NOTES:
A. A TEMPORARY STREAM DE -WATERING SYSTEM SHALL BE IN
PLACE TO DIVERT FLOW AROUND WORK AREA PRIOR TO
INITIATION OF TEMPORARY STREAM CROSSING
REMOVAL.(SEE SHEET C-02).
B. REMOVE ALL MATERIALS USED IN TEMPORARY STREAM
CROSSING.
KEY NOTES:
Oj STABILIZE SLOPE PER CITY OF RENTON STANDARD PLAN 213.10.
OINSTALL LIVE STAKES ON STEEP SLOPES, ADJACENT TO
2 STREAM.
OPLANT TREES AND SHRUBS IN UPLAND AREAS.
AGENCY PERMIT SUBMITTAL
EAST RENTON LIFT STATION JULY 2011
ELIMINATION
STREAMBANK PLANT SCHEDULE & L-02
LANDSCAPE DETAILS