HomeMy WebLinkAboutWWP273549 (13)Please note:
Additional mitigation measures included in the City of Renton SEPA Determination
dated January 18, 2012, will be incorporated into the stream and buffer mitigation plan.
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East Renton Lift Station A>itlzation Plan
CONTENTS
1.0 INTRODUCTION.......................................................................................................................... I
2.0
PROJECT SITE............................................................................................................................. 1
'
2.1 WETLANDS...........................................................................................................................................1
2.2 STREAMS..............................................................................................................................................2
2.3 BUFFER CONDITIONS............................................................................................................................2
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3.0
PROJECT DESCRIPTION.......................................................................................................... 3
3.1 PURPOSE...............................................................................................................................................3
t
3.2 CONSTRUCTION....................................................................................................................................3
3.2.1 New Pipeline..........................................................................................................................3
3.2.2 Construction Equipment and Access.....................................................................................4
3.2.3 Best Alanagement Practices..................................................................................................
5
3.2.4 Schedule.................................................................................................................................5
3.3 OPERATION AND MAINTFNANCE.............................................................................................I............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 Bul-FIR AREAS.................................................................................................7
4.4 TREI: REMOVAL....................................................................................................................................7
'
5.0
MITIGATION PLAN....................................................................................................................8
5.1 AVOIDANCE AND MINIMIZATION..........................................................................................................8
5.2 STREAM RESTORATION .........................................................................................................................8
5.2.1 Streambanks..........................................................................................................................
8
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5.2.2 Stream Channel (Bed)...........................................................................................................
8
5.3 BUFFER RLSTORATION AND TREI: REPLACEML'NT................................................................................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
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7.5 MONITORING REPORTS.......................................................................................................................
7.6 MAINTENANCE- AND CORRTCTIVE ACTION.........................................................................................
14
15
8.0
CONTINGENCY PLAN............................................................................................................. 16
'
9.0
LIMITATIONS............................................................................................................................16
10.0
REFERENCES.............................................................................................................................16
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FIGURES................................................................................................................................................... 17
APPENDIXA: PLAN SHEETS................................................................................................................ 1
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East Renton Lifi Stotion A4itigotion Plon
LIST OF TABLES
Table 1. Vegetation Success Criteria — Upland Buffer and Stewart Creek Riparian Area.....
Table 2. Monitoring Program.................................................................................................
LIST OF FIGURES
Figure 1 — Vicinity Map
Figure 2 — Streams, Wetlands and Buffers
Figure 3 — Site Plan
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East Renton Lili Station Miti,ation 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 R'etland, 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) — Cedar/Sammamish 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
Svstem 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.
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East Renton Lift Station Aliti,>ation Plait
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).
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East Renton Litt .Station Alitieation 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 for 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 148"' Place SE.
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East Renton Lift Station A1itivation 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 tine 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
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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"' 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 -teen 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 (TESL) 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.
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East Renton Lift Station Hiti_ntion 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).
1 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
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East Renton Li i Station Mitigation 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.
IThe 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 macroinvertebrates 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.
P-1
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.
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East Renton Lift Station Alitiyation 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.
comet.). 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
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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
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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
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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. comet.). 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.
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East Renton Lift Station Miti<,ation Plan
Buffer and Riparian Vegetation
To detennine 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.
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Table 1. Vegetation Success Criteria — Upland Buffer and Stewart Creek Riparian Area
Criteria
Year l
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 Icast 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 looscstrife,
poison hemlock, bindweed,
climbing nightshade, non-native
knotweeds, and non-native
blackberry.
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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
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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 covert
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
coon►toring plots
(Years 2 and 3).
General observations
of installed plant
health (all ears).
Non-native
General observations
Early Spring
Early Spring
Early Spring
invasive
of im,asive species.
vegetation
Percent cover data
collected within
Late Summer
Late Summer
Late Summer
monitoring plots.
or Earl Fall
or Early Fall
or Early 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
Julr 2011
East Renton Lift Station A4itization 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,
0 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).
k
King County will inspect the site after submittal of each monitoring report.
7.6 Maintenance and Corrective Action
The City of Renton will continence 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 l 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.
0 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
July 2011
page 15
I
F
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.
ESA
Julr 2011
FIGURES
ESA
JulY 2011
East Renton Lift Station A9itityation Plan
page 17
405
.iUnincorpo'i ted�
® heC"" apt King County
SE f28th r
T} .yilfM�•5.+., ti � �•. �—J(�rt" '! C
:
IL
��,%.�y-.. •. � i+�H ��^-- tT'--J7<i, IRS * ��5. �y,. �. ,�
SE 136TH ST
6E 136TH ST
SE 1361
Sfi 13�Ti1r
IS
y � %t K��.' bkji..•ill,.'�"2��•: �� 1. �� �'� •'
Kifig >rqunty "• a1 �" 'Y ���- R
lip
Vay
•!,�•'}pl"-liy.� 1< .,: -. ems/ ..�M�." --
J A
Legend
Project Area
I
N Roads
0 # Unincorporated Parks
- King County
Miles City Limits
SOURCE: ESA Adolfson, 2009; PACE Engineers, Inc.; King County, 2009 (2005)
East Renton Lift Station. 209036
Figure 2
Streams, Wetlands, and Buffers
Maplewood Park, King County, WA
t
1
1
1
1
/�
\ m PERMANENT STREAM , V
I EASEMENT I[TYP) CROSSING ,
AREA '
I/ �` MAPLEWOOD PARKO SEWER PIPE
CONSTRUCTION
, �i �9 __ —_---------= — --- Trs----�---------i 1
1481h PL SE
o I
d I
n
0 20 40 80
N Scale in Feet
',1'� TP-1 .... i 1
10' CONSTRUCTION
/y80 / EASEMENT(TYP)
SEWER PIPE -////// //// a>. 1 - _____�- ,} •� ' /// III `3 a M� .C' t I I 6
/ ` Q
BRIAR HILLS
No.4 / // // /` ►IT d9 O \ \ t Y rf. i ( 1 ✓ EAST RENTON
yr LIFT STATION
/ /� Q�/ V` \ e '�� .Y'- I r—/ FACILITY TO BE
i / \J9a REMOVED
/*
•--- SITE ACCESS / TPE
/ y
---�---i �------J O m �� �J/�'� jk� Y (i� b / � • 99�1/ q2 T
-}-_ 1 Y•_ i -.,.:i I �' /�hr . Y", ;t _ I iain�0 / �., `'` _wP CONTRACTOR
MAPLEWOOD PARK BOUNDARY
EASEMENT TO CITY
BUFFER IMPACT AREA (21,948 SF/0.5 ACRE)
XF WATER
EASEMENT
W.D. 90
I
I
I
I,
I
I
I
OF RENTON
Y
_ - - - - East Renton Lift Station . 209036
SOURCE: City of Renton; Carollo. 2011.
Figure 3
Site Plan
King County, Washington
APPENDIX A:
PLAN SHEETS
East Renton Lift Station Mitigation Plan
APpenclix A
W
LAKE
WASHINGTON
.,
�7
rr
vw.r
� T 4t Hen xreY
M
A-p.+
Err nA.�en v "ti4 b
NeYrOn
•q+s as
r
PRO.IECT sITE 9
��
t `
1"Fft
Ltl.Aer���• M�n1 •N�
am,
REFERENCE: 2010
GOOGLE MAP
VICINITY MAP
NORTH
NO SCALE
REFERENCE: 2007 GOOGLE EARTH
LOCATION MAP
NO SCALE
tcaro/%0
BURIED UTILITIES IN AREA
PLEASE CALL BEFORE YOU DIG
1 8004245555
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
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
DRAWING LIST
SHEET NC
DRAWING NO.
DESCRIPTION
G-01
COVER SHEET
2
G-02
GENERAL NOTES, ABBREVIATIONS AND LEGENDS
3
C-01
EXISTING SITE AND C ONSTRAINTS
C-02
ARY E
TEMPORARY AND SEDIMENT CONTROL PLAN
5
C-03
DEMOLITION PLAN
6
C-04
SITE AND PIPING PLAN
GOS
AN
PIPING PLAN AND PROFILE - STA 0+00 - STA 5+00
P
C-06
PIPING PLAN AND PROFILE - STA 5-00 - STA 10.31
5
C-07
MISCELLANEOUS DETAILS .I
10
C-08
MISCELLANEOUS DETAILS -11
11
L-01
BUFFER ENHANCEMENT 6 STREAM RESTORATION PLANTING PLAN 6 DETAILS
12
L-02
STREAMBANK PLANT SCHEDULE & LANDSCAPE DETAILS
AGENCY PERMIT SUBMITTAL
I
L
GENERAL NOTES:
1. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS BEFORE STARTING WORK
AND SHALL IMMEDIATELY NOTIFY THE ENGINEER OF ANY DISCREPANCIES.
2. UNLESS DETAILED, SPECIFIED, OR OTHERWISE INDICATED ON THE
DRAWINGS, CONSTRUCTION SHALL BE AS INDICATED IN THE APPLICABLE
TYPICAL DETAILS AND GENERAL NOTES. TYPICAL DETAILS SHALL APPLY
EVEN THOUGH NOT REFERENCED AT SPECIFIC LOCATIONS ON DRAWINGS.
3. WHERE NO CONSTRUCTION DETAILS ARE SHOWN OR NOTED FOR ANY PART
OF WORK, DETAILS SHALL BE THE SAME AS FOR OTHER SIMILARWORK.
ABBREVIATIONS
AB
ANCHOR BOLT
ABC
AGGREGATE BASE COURSE
AC
ASPHALTIC CONCRETE
AFF
ABOVE FINISHED FLOOR
AHR
ANCHOR
ALM
ALARM
AL
ALUMINUM
APPROX
APPROXIMATE
ASTM
AMERICAN SOCIETY FOR TESTING AND MATERIAL'
AUTO
AUTOMATIC
AVG
AVERAGE
@
AT
BSP
BLACK STEEL PIPE
C
CIVIL
CA
CONCRETE ANCHOR
CB
CATCH BASIN
CHNL
CHANNEL
CITY
CRY OF RENTON
❑
CONSTRUCTION JOINT
CL OR CL
CENTERLINE
CLP
CONTROL PANEL
CMP
CORRUGATED METAL PIPE
CND
CONDUIT
CO
CLEANOUT
COMP
COMPARED
CONC
CONCRETE
CONN
CONNECTION
CONSTR
CONSTRUCTION
CONT
CONTINUE (D) (OUS) OR CONTROL
CP
CONTROL POINT
CPEP
CORRUGATED POLYETHYLENE PIPE
CPLG
COUPLING
CTWD
COTTONWOOD
D
DRAIN, DEPTH
dBA
DECIBELS ADJUSTED
DBH
DIAMETER BREAST HEIGHT
DDES
DEPARTMENT OF DEVELOPMENTAND
ENVIRONMENTAL SERVICES
DEG
DEGREE
DET
DETAIL
DIA OR
DIAMETER
DIM
DIMENSION
DIP
DUCTILE IRON PIPE
DWG
DRAWING
DWN
DOWN
E
EAST
EA
EACH
EL OR ELEV
ELEVATION
ELEC
ELECTRICAL)
EMBED
EMBEDMENT
ENGR
ENGINEER
EDP
EDGE OF PAVEMENT
EQL
EQUAL
EQPT
EQUIPMENT
EX OR EXIST EXISTING
FLG
FLANGE
FRP
FIBERGLASS REINFORCED PLASTIC
FT OR'
FOOT, FEET
GIS
GEOGRAPHIC INFORMATION SYSTEMS
HDPE
HIGH DENSITY POLYETHYLENE
HOA
HOMEOWNER'SASSOCIATION
HORZ OR
HORIZONTAL
HORIZ
ID
INSIDE DIAMETER OR INSIDE DIMENSION
IE
INVERT ELEVATION
IN OR"
INCH, INCHES
INV OR
INVERT
INVT
KC OR K.C.
KING COUNTY
L
LENGTH, LANDSCAPE
LF
LINEAR FEET
MAX
MAXIMUM
MDD
MAXIMUM DRY DENSITY
MEOT
MECHANICAL
MFRS
MANUFACTURER'S
MH
MANHOLE, SANITARY
MIN
MINIMUM
MISC
MISCELLANEOUS
MON
MONUMENT
N
NORTH
NE
NORTH EAST
NOOR#
NUMBER
NOM
NOMINAL
NTS
NOT TO SCALE
NW
NORTHWEST
O.0
ON CENTER
OD
OUTSIDE DIAMETER
PL
PROPERTY LINE, PLACE
PNL
PANEL
POC
POINT OF CURVATURE
PSI
POUND PER SQUARE INCH
PVC
POLYVINYL CHLORIDE
PVMT
PAVEMENT
R OR RAD
RADIUS
RDCR
REDUCER
REF
REFERENCE
REINF
REINFORCE (D) (ING) (MENTI
REDID
REQUIRED
RWTR
RECLAIMED WATER
S
SEWAGE OR SOUTH
SCV
SWING CHECK VALVE
SO
STORM DRAN
SDMH
STORM DRAIN MANHOLE
SE
SOUTHEAST
SIM
SIMILAR
SPEC
SPECIFICATION
SS
SANITARY SEWER, GRAVITY
SSFM
SANITARY SEWER FORCE MAIN
SSMH
SANITARY SEWER MANHOLE
SST
STAINLESS STEEL
STA
STATION
STD
STANDARD
STL
STEEL
S/W
SIDEWALK
SW
SOUTHWEST
TDH
TOTAL DYNAMIC HEAD
TOC
TOP OF CONCRETE
TP-#
TEST PR NUMBER
TYP
TYPICAL
V OR VLV
VALVE
VERT
VERTICAL
VLT
VAULT
VOL
VOLUME
W
WEST, WIDTH, WATER
W/
WITH
WD
WATER DISTRICT
W/O
WITHOUT
WSDOT
WASHINGTON STATE
DEPARTMENT OF TRANPORTATION
% PERCENT
BUILDING MATERIALS
VIEW IN SECTION
MATERIAL EXISTING
REMOVE NEW
CONCRETE
SOL \i\�ii��i
VIEW IN PLAN (NEW SHOWN - EXISTING SCREENED)
GRATING SPAN PAVEMENT
OTHER
VIEW IN PLAN
EXISTING
WETLAND
c
STREAM\
SURVEY LEGEND (EXISTING LINE WORK)
0WATER VALVE
® MONUMENT NOT TIED THIS SURVEY
,14,
V HYDRANT
® FOUND CASED MONUMENT
FIRE DEFT. CONNECTION
® WATER METER
.G.� SET MAG NAIUALUMINUM WASHER
POST INDICATOR VALVE
STAMPED"PACE CONTROL"
05 ® MANHOLES (SS/SD)
tie SET 5/8' IRON REBAR W/ RED
❑ CB
PLASTIC CAP STAMPED'PACE CONTROL"
-0- POWERIUTILITY POLE
UNLESS OTHERWISE STATED.
E— GUY ANCHOR
® $OL TEST PIT
® JUNCTIONSOX
aPOWER TRANSFORMER
P T POWER/TELEPHONE VAULT
aPM POWERMETER
CENTER LINES ...
CENTERLINES -
❑ TELEPHONE/TV RISER
PROPERTY LINES
11) GAS VALVE
RIGHT-OF-WAY LINES
GAS METER
EASEMENT LINES — — — _—
, �® /
Y STREET LIGHT
LOT LINES
DITCH LINE
x SPOT ELEVATION
WATERLINE
a SIGN
SANITARY SEWER LINE a
o MAILBOX
STORM DRAIN LINE m
Q ROCKERY
S UBDIVINISION LINES --------
GAS LE 0
CONIFEROUS TREE
UNDERGROUND POWER LINES w
UNDERGROUND TELEPHONE LINES
D ECIDUOUS TREE
UNDERGROUND POWER LINES/ wAl
TELEPHONE LINES
UNDERGROUND CABLE TV LINES u1v
ICY IRRIGATION CONTROL VALVE
OVERHEAD UTILITY LINES Qr¢
CHAIN LINK FENCE 0 0
rl'YYl
WIRE FENCE ----
DRIPLINE
WOOD FENCE — —
EROSION AND SEDIMENT CONTROL STANDARD NOTES:
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
LOCATION OF ROADS, PIPES, RESTRICTORS, CHANNELS, RETENTION FACILITIES, UTILITIES, ETC.).
2. THE IMPLEMENTATION OF THESE ESC PLANS AND THE CONSTRUCTION, MAINTENANCE, REPLACEMENT, AND UPGRADING OF THESE ESC FACILITIES IS THE RESPONSIBILITY OF
THE APPLICANW ESC SUPERVISOR UNTIL ALL CONSTRUCTION IS APPROVED.
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
(SWUM APPENDIX 0). DURING THE CONSTRUCTION PERIOD, NO DISTURBANCE BEYOND THE CLEARING LIMITS SHALL BE PERMITTED. THE CLEARING LIMITS SHALL BE
MAINTAINED BY THE APPLICANT/ESC SUPERVISOR FOR THE DURATION OF CONSTRUCTION.
4. STABILIZED CONSTRUCTION ENTRANCES SHALL BE INSTALLED AT THE BEGINNING OF CONSTRUCTION AND MAINTAINED FOR THE DURATION OF THE PROJECT. ADDITIONAL
MEASURES, SUCH AS CONSTRUCTED WHEEL WASH SYSTEMS OR WASH PADS, MAY BE REQUIRED TO ENSURE THAT ALL PAVED AREAS ARE KEPT CLEAN AND TRACK OUT TO
ROAD RIGHT OF WAY DOES NOT OCCUR FOR THE DURATION OF THE PROJECT.
5. THE ESC FACILITIES SHOWN OV 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 MINM17ED.
6. THE ESC FACILITIES SHOWN ON THIS PLAN ARE THE MINIMUM REQUIREMENTS FOR ANTICIPATED SITE CONDITIONS. DURING THE CONSTRUCTION PERIOD, THESE ESC
FACILITIES SHALL BE UPGRADED AS NEEDED FOR UNEXPECTED STORM EVENTS AND MODIFIED TO ACCOUNT FOR CHANGING SITE CONDITIONS (E.G. ADDITIONAL COVER
MEASURES, ADDITIONAL SUMP PUMPS, RELOCATION OF DITCHES AND SILT FENCES, PERIMETER PROTECTION ETC.)AS DIRECTED BY KING COUNTY.
7. THE ESC FACILITIES SHALL BE INSPECTED DAILY BY THE APPL ICANT/ESC SUPERVISOR AND MAINTAINED TO ENSURE CONTINUED PROPER FUNCTIONING. WRITTEN RECORDS
SHALL BE KEPT OF WEEKLY REVIEWS OF THE ESC FACILITIES.
8. ANY AREAS OF EXPOSED SOILS, INCLUDING ROADWAY EMBANKMENTS, THAT WILL NOT BE DISTURBED FOR TWO CONSECUTIVE DAYS DURING THE WET SEASON OR SEVEN
DAYS DURING THE DRY SEASON SHALL BE IMMEDIATELY STABILIZED WITH THE APPROVED ESC METHODS (E.G., SEEDING, MULCHING, PLASTIC COVERING, ETC.).
9. ANY AREA NEEDING ESC MEASURES THAT DO NOT REQUIRE IMMEDIATE ATTENTION SHALL BE ADDRESSED WITHIN SEVEN (7) DAYS.
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
SEASON, OR WITHIN TWENTY FOUR (24) HOURS FOLLOWING A STORM EVENT.
11, AT NO TIME SHALL MORE THAN ONE (1) FOOT OF SEDIMENT BE ALLOWED TO ACCUMULATE WITHIN A CATCH BASIN. ALL CATCH BASINS AND CONVEYANCE LINES SHALL BE
CLEANED PRIOR TO PAVING. THE CLEANING OPERATION SHALL NOT FLUSH SEDIMENT4,ADEN WATER INTO THE DOWNSTREAM SYSTEM.
BURIED UTILITIES N H¢A
PLEASE CALL BEFORE YOU DIG
1.8004245555
LINE WORK
NEW OR EXISTING STRUCTURES
NEW OR EXISTING STRUCTURES HIDDEN — — — — — — —
NEW PIPING (TRIPLE LINES)
NEW PIPING HIDDEN (TRIPLE LINES)
NEW PIPING (SINGLE LINE)
NEW PIPING HIDDEN (SINGLE LINE) — — — — — — —
EXISTING PIPING (TRIPLE LINES)
EXISTING PIPING HIDDEN (TRIPLE LINES) — —
EXISTING PIPING (SINGLE LINE)
EXISTING PIPING HIDDEN (SINGLE LINE) — — — — — — —
NEW EQUIPMENT OR PIPING CENTERLINE
EXISTING EQUIPMENT OR PIPING CENTERLINE
NEW EQUIPMENT
NEW EQUIPMENT HIDDEN — — — — — — —
EXISTING EQUIPMENT
NEW FITTING
EXISTING TO BE REMOVED
NEW PIPING CALL -OUT L 3•PW
EXISTING PIPING CALL -OUT
DRAWING CROSS REFERENCE
DETAIL OR SECTION
NIDENTIFICATION
D-1
DETAIL OR SECTION TAKEN
ON THE SAME SHEET
DETAIL OR SECTION IS
TAKEN ON THE DRAWING
INDICATED
AT TITLE
TYPICAL DETAIL REFERENCE
BUBBLE
TYPICAL. DETAIL NUMBER
IDENTIFICATION
DETAIL OR SECTION
IDENTIFICATION
DETAIL OR SECTION
REFERENCE BUBBLE
DETAIL OR SECTION IS TO BE
FOUND ON THE SAME SHEET
DETAIL OR SECTION IS TO
BE FOUND ON THE DRAWING
IND CATED
TYPICAL DETAIL IS TO BE
FOUND ON THE TYPICAL
DETAIL DRAWINGS
AT CROSS REFERENCE
SANITARY SEWER NOTES:
1. THE HOURS OF WORK INTHE STREET RIGHT OF WAY SHALL BE PER CITY SPECIFICATIONS ON WEEKDAYS UNLESS OTHERWISE APPROVED IN WRITING BYTHE PUBLIC WORKS DEPARTMENT, A
TRAFFIC CONTROL PLAN SHALL BE SUBMITTED TO THE CITY AND APPROVED BY KING COUNTY PRIOR TO BEGINNING ANY WORK WITHIN PUBLIC RIGHT OF WAY.
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 TOAVOID DAMAGE
OR DISTURBANCE.
3. A PRE -CONSTRUCTION CONFERENCE THAT INCLUDES THE CITY. KC ROADS, AND KC ODES SHALL BE REQUIRED PRIOR TO STARTING NEW CONSTRUCTION (PROVIDE MIN 7 DAY NOTICE). IT SHALL BE
THE CONTRACTOR'S RESPONSIBILITY TO SECURE ALL NECESSARY PERMITS PRIOR TO STARTING CONSTRUCTION. (INSPECTION WILL BE ACCOMPLISHED BY A REPRESENTATIVE OF THE CITY OF
RENTON AND BY RESPECTIVE PERMIT HOLDERS.) IT SHALL BE THE CONTRACTORS RESPONSIBILITY TO NOTIFY THE PUBLIC WORKS INSPECTOR 24 HOURS IN ADVANCE OF BACKFLLING ALL
CONSTRUCTION.
4. CONTRACTOR IS SOLELY RESPONSIBLE FOR THE MEANS, METHODS AND SEQUENCES OF CONSTRUCTION AND FOR THE SAFETY OF WORKERS AND OTHERS ON THE CONSTRUCTION SITE.
5. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO OBTAIN PERMITS OTHER THAN THOSE INCLUDED WITHIN THE SPECIFICATIONS PRIOR TO ANY CONSTRUCTION.
6. A COPY OF THESE APPROVED PLANS AND SPECIFICATIONS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN PROGRESS.
7. ALL DISTURBED AREAS SHALL BE SEEDED AND MULCHED OR OTHERWISE STABILIZED TO THE SATISFACTION OF KING COUNTY/CITY FOR THE PREVENTION OF ON -SITE EROSION AFTERTHE
COMPLETION OF CONSTRUCTION PER CONTRACT DOCUMENTS.
B. IN UNIMPROVED AREAS, MANHOLE TO EXTEND MINIMUM 61NCHES AND MAXIMUM 12 INCHES ABOVE FINISHED GRADE OR MUST HAVE MINIMUM T DIAMETER CONCRETE RING POURED AT GRADE. IN
PAVED AREA, COVER MUST SLOPE IN ALL DIRECTIONS TO MATCH PAVING.
SURVEY NOTES:
HORIZONTAL DATUM:
NAD 83-91 BASED ON FOUND MONUMENTS WCCS #2832 (PACE CONTROL POINT #2) A CONCRETE MONUMENT AT THE EAST QUARTER CORNER OF SECTION 14 AND WCCS #29M (PACE CONTROL
POINT #17) A 4- CONCRETE MONUMENT IN A CASE AT THE INTERSECTION OF SE 142NO STREETAND 148TH PLACE BE.
VERTICAL DATUM:
HAVE 88 BASED ON CITY OF RENTON BM "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).
LEGAL DESCRIPTION:
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.
EROSION AND SEDIMENT CONTROL STANDARD NOTES CONT:
12. ANY PERMANENT RETENTION/DETENTION FACILITY USED AS A TEMPORARY SETTLING BASIN SHALL BE MODIFIED WITH THE NECESSARY EROSION CONTROL MEASURES AND
SHALL PROVIDE ADEQUATE STORAGE CAPACITY. IF THE FACILITY IS TO FUNCTION ULTIMATELY AS AN INFILTRATION SYSTEM, THE TEMPORARY FACILITY MUST BE ROUGH
GRADED SO THAT THE BOTTOM AND SIDES ARE AT LEAST THREE FEET ABOVE THE FINAL GRADE OF THE PERMANENT FACLITY.
13. COVER MEASURES WILL BE APPLIED IN CONFORMANCE WITH APPENDIX D OF THE SURFACE WATER DESIGN MANUAL.
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
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
AREAS TO REMAIN UNCOVERED SHALL BE SUBMITTED TO THE ODES INSPECTOR.
AGENCY PERMIT SUBMITTAL
I
I I I PARKSIDE
COURT GENERAL NOTES:
N=178282.36 I A. EXISTING SURVEY COVDUCTED MAY 2009 IDENTIFIES
Z I I I E=1316495.53 - N= t 78349.58
O I TREES 6 INCHES DBH AND LARGER. NOT ALL TREES AND
E =1316495.86
I CP #8 SHRUBBERY ARE SHOWN. LIMITS OF WETLANDS AND
= I I I CP#6 635D-10.BR/C STREAMS ARE APPROXIMATE.
N=178111,131
I ) 635D-10.6R/C /
E =1316fi13.559 ? I B. ALL CONSTRUCTION ACTIVITIES SHALL BE CONTAINED
N = 177801.336 / \
I I E - 1316600.520 ELEV = 390.08 / I �. I STORMW'A7 °R WNHIN THE LIMITS OF CONSTRUCTION AND AVOID DIRECT
I I - WETLAND DISTURBANCE.
j ELEV-381.31 CP#3 am I ! `'I DETENTIO4
ALL
N = 177 29 9.79 \ EASEMENT NENT E = 1780390� / / / N =31782700.086 Np'7�L E =111651,1 I \ i -CP635D� C. CONCLUSION
O THE
SHALL BE RESTORED AT THE
2 -BRASS DISC CONCLUSION OF THE PROJECT PER CONTRACT
ElT
DOCUMENTS.
D2MON
I I \ I N=17B279.481 089 D. EAST RENTON LIFT STATION SHALL REMAIN IN SERVICE
E =177929.79 E = 1316601.979 .o
I I / MAPLEWOOD PARK ELEV = 390.59 p AT ALL TIMES THROUGH COMPLETION OF THE PROJECT.
: ;\`. $ -4 .��.{!.i' (~-2O -( -� f`! ._ I (DWNELEVc1392.6 CONTRACTOR EASTR MAINTAIN STABLETION
ACCESS TOTHE
/ LMITS OF 8^ O 3P( T T �[ .� \ x I I 7 EXISTING EAST RENTON LIFT STATION AND ACGE33 TO ALL
I I / CONSTRUCTION 1� �r \ �C,�'C.y �. _ _ _ - OF ITS FACILITIES FOR CITY PERSONNEL AT ALL TMES.
/ = .._ - 1--SP/ / �- �„;9 ^ J_.I�%-�' ` yy7�-Z 4(f I--� LOCATION OF EXISTING UTILITIES SHOWN IS BASED ON
' �-!. - �_-1----L.•1• • '! ,.` Lit _ - _ .-�T_�r, e ''� Tp-1 �- ` RECORD DRAWINGS AND FIELD LOCATES. ALL EXISTING
A_. T _ -
/JT•-0 :�` .STP-� C_A___� ���---" UTILITIES ARE SHOWN APPROXIMATE. CON
-.__ _-_____-_---I�,\--__ _ 9-_ _--__ _ ---- SHALL VERIFY THE LOCATION OF ALL EXISTING UTILITIES
CP#9 11Y STRUCTION / \ ` 7792r 'l tJ f' 3 / AFFECTED BY THIS PROJECT PRIOR TOBEGINNING WORK.
N=177408.22 635D.10.9R/C 380 EASEMENT(TYP)- //' /� �' \ \ �
1 N=1776,3.360 /,y ��' /,stlu __ Ip m E`=136626.21 / :,`_-_____
E-131678,.00 / at` c __' \ / ' �c o N ' ' ` = > �ti�;l�fff"`. KEY NOTES:
E =1316607'095 _ / / ,),,' / "JJ' r.y/, 3z'.c�(.-. c _
/ / / \\ vAo x�"• N=,17B292.62i�. O VALVE VAULT
N-177422.9fi ELEV =38t.17 / / / j/ CP#12 YYUU 1 .��s:' ';?�+�^,-- iI I
E = 1316764.21 / / / / \ -_ I E .3,ifi62�'00 `\ / O TERRAIN EAST AND WEST OF SURVEY IS MAPLEWOOD
/ // // / 16350.11.12MNAN (TYP) PARK AND IS HEAVILY FORESTEDSIMILARTO WHAT IS
N=177869.529 `) 4 T 1 q-` ?:;:;.g ( t
`'`=``^^z``'" a`"-'''�.`£`�`•`R iI SHOWN ON EXISTM, SURVEY. MAPLEWOOD PARK IS AN
N = 177453.38 , y-`.ta`i-,,-t.3:�m.`
/ / / / /� 1'Y,. .\>. �„�,, ` EIECI BLDG INACTNE PARK.
E-1316765.16 / ELEV=3B0.72 -''' ` .�-k'". .:. `"'. ^�; L
= / /.. /t ,�Y I i� xlsrcRAVEL
. _.._..----'`
635D-10.9R/C �1✓1-' - N �( 1 "'"���.,'� y'4R\'.-�+`.k',`z-y` N I O I I O2 LIMITS OF CONSTRUCTION TO EDGE OF E
% i ' ' f \ `•``'` �`'.a..t -v m ROAD, UNLESS OTHERWISE INDICATED.
N =,77717.766 I
BRIAR HILLS B4 l \ n`>?'' :.? /Y
No.4 / E=t316745.522 j` R=3fi0' 1 "I' \ > `: "'>.::, Rom"``' P�'" a EAST RENTON
/ / ELEV - 378.22/`- / z f \'9 \ "` -" ^' a + � p, I jP �L WEl' < LIMITS OF CONSTRUCTION TO FENCE LINE, UNLESS
'/ A=62°0790' .` z v F''dv''`_ti..� of I / LIFT STATION
\ "))Y' J V1�cLL / OTHERWISE INDICATED.
L=390.29' , C,:' ,- ��',:zS�`a" q.z i' a � lu (J \ �.. �: v :`L, ::'a I V/ FAGLRY
Ij .-i - %1 �y�r R
CP#14-BRASS / //�.: z �) ""=1` 9 7R( N-178289.78 I EMERGENCY
y' I DISC W/PUNCH > l=1315727.70 Yrl I \�7- ' 4O LMRS OF CONSTRUCTION TO CURB, UNLESS OTHERWLE
; F:a ., \ M ,,•,.: �.,� \ / "'TTTYYY l t STORAGE WELL INDICATED.
I I fi357-11.14MIC N = 177602.91 / I/ / '' 'fit' ^ `?= `-,"t'.' l i o+` /\ y N =178321.61
N=177437.1,3 / / / ' `S:l `�i�'�2c Z-y`',1,`�{ ,a��`z%`..,�>^..:, `' / 1 9 �[ rl may.,.�--/'
1 E=,316777.18 / 3```-��.:,zi \�'<y `>.\' 7F *.;',z��` �y z O "z' ,"„���4\_2 �/ I E=,316728.10
1 E- 1316801A 07 / / ti-`?� ' 4'`yio', , , ��yy -r -zS„r yI \ / / Alk 4 5 CONTRACTOR STAGING AREA ITS AS TO EDGE OF
i - ELEV-374.17(DWN 1 GRAVEL DRIVE AND OTHER LIMITS AS INDICATED.
/ � l' - .;,-. .- �vid`{V. STEWART CREEK . 9 ' aY•``;� '
LIMITS OF CONSTRUCTION THRU MAPLEWI')OD PARK TO
71, / -'\\ \a 7 Vti;.. Ty' y •F j 1\d CP us MAINTAIWPROTECT MATS DURING CONSTRUCTION.
635D.t301.52
N.178301.528
• 6E 3a /
Y,,•.;yZt�<a.,. "�. � .ra.. / i z r�r. ., 1� E =1316729.093
gz
-.'� -,•� �z 2a' „s �:Z• o / ELEV = 395.21
O m ,�r v`.v'4-''�aa�'. ��iaf^`,`5'y�'y���i zi :``p'.' � b � `':..�..(}9` ��' q2 T )
y. m 1r'//-,.�-y`z'>�`;-`�a�`4•yc I :._ ,. nj0 ��COVTRAC70R
irk 5
STAGING AREA
_ _ N =177612.94 � r` a�:4 ; uz'��a�`,^�av�.� I I s,c� -art. / 635D-20 WC 96I
/ N .1.18162209 O I
` `=C % J�. -4, • I I E .1316812.623 1 CP #4
1 1 jII MI (TYP) 4 Lte fi `may:
ELEV=389.00 / 178309.163
6350-10 AR/C
d MAPLEWOOD N=
CP 422 1 �p O I I ESTATES E = 1316846.654
1 E-177422..86 N-177 .55A96 ELEV =401.80
I 8 i,�o..�fi I �,'•�`eY:�'a'��� A] N =177955.496 W � � I I I
N= 177-.0 `�' '�
m I E =1316844.02 I �" - m .L `�8 m� ,'�zk^_' E =1316824.221 0`
IN=1774D7.03 CP #11:e'`a'xa`. ELEV =383.78FENCE
ui E=1316818.97 6350-t,.NMNNV''^"�iz:
w I I,-, 1 N= 177587.910 `P ' ~~2. CP #23 MAPLENOOD PARK
.-.. _.._.._.._.. _.. _.. _. .. ....5
E=1316805.701 � �.-�`.`�'-` 635D-3123RrC 4
1 I '�, U.
ELEV = 375.71G.�G.
aF�-;ti N-177787.655
ELEV =6389.6772 WETLANDS (TYP)
KING COUUNI ORNTY ; '• CITY OF RENTON
i
/ CITY OF RENTON
\ W / LMITS�N=178329.69
/ 7 W \ E=1317042.35
Z / DIP
\ F' / KING COUNTY WETLAND AND STREAM BUFFERLIMITS I - 4j
I E =1317054.44
I I I \� / / yj� C�d \�•
fill
SCALE: 14V
i r.._.._.._.._.._.._.._.._.._.._.. A PLAN
FILE: 8235C00-C-100
`e
30' WATER I /
I I EASEMENT W.D. 90
MAPLEWOOD PARK BOUNDARY I !
I I I
-
� I I
\ / UTILITY AND ACCESS
EASEMENT TO CITY
Y OF RENTON
\P: L,. T•^S AGENCY PERMIT SUBMITTAL
�.� P.ZENGINEEM; N� 1.= xmec.. �eJ Y2O,1
CITY OF EAST RENTON LIFT STATION
�p T.AY -� RENTON ELIMINATION _
BURIED UTILITBESIN AREA 4+ �DATUM W,B ' �, EXISTING SITE AND CONSTRAINTS C-01
SE MPG
PLEACALL BEFORE YOU OIG 9ON �
4u £1x' Plennin udOg1 ublic Wong Dept.
12M 424S555 NO. REVISION BY
I
Z
I
I
_ I
I
I
I
I
GENERAL NOTES:
I I PARKSIDE A. EXISTING SURVEY CONDUCTED MAY 2D09 IDENTIFIES
r I 1 COURT SHRUBBERY ARE SAND
SHOWN. LIMITS OF WETLANDS AND
N-178349.58 STREAMS ARE APPROXIMATE.
N =178282.36 E-1316495-86
1 I I I E = 1.11Cd95.53 - B. ALL CITONSTRUCTION ACTIVITIES SHALL BE CONTAINED
I"----'----'^-- �'-'-"-"-'-- WHIN THE LIMITS OF CONSTRUCTION AND AVOID DIRECT
ST
. WETLAND DISTURBANCE.
IER CALL DISTURBED AREAS SHALL BE RESTOREDATTHE
pETENTpY CONCLUSION OF THE PROJECT PER CONTRACT
POND DOCUMENTS.
D. EAST RENTON LIFT STATION SHALL REMAIN IN SERVICE
AT ALL TIMES THROUGH COMPLETION OF THE PROJECT.
STREAM DEWATERING CONTRACTOR TO MAINTAIN DRIVABLE ACCESS TO THE
1 2 A
PLAN EXISTING EAST RENTON LIFT STATION AND ACCESS TO ALL
OF ITSFAGLRIES FORCffV PERSONNEL AT ALL TIMES.
EVJOODARK J(A �%' I.'+(/_. LOCATION OF EXISTING UTdRIES SHONN IS BASED ON
I - �'4NI,
pl _ _ \ RECORD DRAWINGS AND FIELD LOCATES. ALL EXISTING
wff
per. -)_ UTILITIES ARE SHOWN APPROXIMATE. CONTRACTOR
--'411'•�.%--'- -'�i9A--•�-�`r ' ` f --..__ -
_ = -� - - - - ---. 1� SHALL VERIFY THE LOCATION OF ALL EXISTING UTIFTIES
-_ ' AFFECTED BY THIS PROJECT PRIOR TOBEGINNING WORK.
1 F. FOR EROSION AND SEDIMENT CONTROL STANDARD NOTES,
/ 382 • . d- \ I'-' \ �. _ 3g SEE DWG 13-02.
_______
1 /80 380--� �� 7�C 1>fa FjR/RNE 11 `/ /qo ,�, '�,. ,,L. `` --
�y / \ �� �\1,y xvSE NT(TIP 1
.9"Irl's OFl e "ti, j PROTECT CATCH BASINS
/ CONSTRUCT
,? KEY NOTES:
/ -- >/' ALL IN -STREAM WORK WILL OCCUR DURING THE DRY
5tRUC11O4 OMONTQUALIH$AND UNDER THE SUPERVISION OF
ENT YP - ,'/ 1 i;-,c.•i`-:. .,:
(T 1 0 - - i �y �:'�:. ,y��. f, v ELECT Bl7G
r.._..-.._.. _.._.. _.._.. _..7L.._.. 37g ��� . , i / O :c.;'$.w"` i`p•`. • Q DEWATER STREAM ICHANNEL ANDDIVERTSTREAM
I / / ijC , \ „fi i,��•,`-a'.;i`'';,,. ''" FL0W5 AROUND W0RK AREA PRIOR TO ANY
/ Z OFCHANNEL WORK. A SIMILAR
MADAM CONSTRUCTED
/ - ( '�'~.�» OF SAND BAGS OR SMEAR MATERIAL SHALL BE
SILT FENCE 3- - t7 � � h. yi-c..•`^-.. ,.,.o`
/ yob i/ / ,p \ 'N, ;.,,.�,; `$;y W� / LIFTREMON INSTALLED UPSTREAM AND DOWNSTREAMOFTHE
C418 / bra. =�` '.VELL
�! 'a'�A` ( v \ �t4, `I" -~h, - LIFT S7ATgN
r' / FAGL(TY WORK AREA. STREAM FLOW SHALL BE PUMPED
I
178289.78
N / "ur `z``1 EMtItGtNCY AROUND THE WORK AREA AND DISCHARGED $:a A \ E = 7316727 ORAG_ WEL GE
`� ` 70 .1 L / DOWNSTREAM OF THE COFFERDAM. ANY AND
INTO THE WORK AREA SHALL BE PUMPED ANO
/ I/ ' . ` ti�i'�, x r r 1 "`•p 1D`"-'" 7 N = 178321.61
/ '-,�`, a`,-`+,i`� •- .1„ 'e.^:�; 1����''`yy � r ( O p � /, '•.ti � / / 1316728.1� DISCHARGED INTO THE DEWATERING DISCHARGE
LOCATION REMOVE COFFERDAMS, PUMPS AND
PIPING AT COMPLETION OF WORK.
_BRIAR HILLS / .i� �.,4 STEWART CREEK 6 T y,.$�vk. 1
_ Z,
\ / �' ' 0* O��_.x?" :`�" I i{C / OSEE DWG C-05 f0R TEMPORARY STREAM CROSSING
\ ----- No-4 /ate \\ ,�,�,:�;� `:, , �� � T ;:: _'`xa�} � � � DETAas.
148Ih PL SE-_ -1` — x<?[t;:.�,,v``'�a•_j -\�` '`''.`Y:`3"�a�-`'yk�r-;`. \\ \\\ �!'�`, / 3000NTRACTORTOLEAVESdTFENCEANDOTHER
EROSION CONTROL MEASURES IN MAPLEWOOD PARK
0 . ' v` = `• 'ed,,?eva' " j' / ?es�:�a-�xN; - . - 9 i CONTRACTOR IN PLACE AT COMPLETION OF CONSTRUCTION.
EROSION CONTROL MEASURES TO BE MAINTAINED
A�, O qp I AND REMOVED BY OTHERS.
J/ \ O �( `^ - "` a�.�^s..^'YJ,.:�;",•• I / I SILT FENCE 2
PROTECT CATCH
CONSTRUCTION
r BASINS ENTRANCE #2 \Nae, .:: `w
e3 ' ; 0 0/ MAPLEWOOD
9" O ESTATES
CONC w A� \ T '� I I
PAD
6'FENCE(T)
MAPLEWOOD PARK
I
WETLANDS (TYP)
/ UNINCORPORATED 111 —� CIIY OF RENT ON
/ KING COUNTY
CITY OF RENTON
I I 4 / LIMITS ) N=17832959
\
2' W \ E = 1317042.35 DIP /
p
KING COUNT, WET LAND AND STRUM BUT TER LIMITS
\ W
\ El CONSTRUCTION 1
N = 178314.46 _ ENTRANCE #1
/=1317054 4a ((
U1ILIT11 :J ACCESS
EASEMENT T00f7Y
_ PLAN OF REN3BN
r A
I SCALE:,•=40' ' \ �`�r
I FB.E: 8235C00-C-100 77_
30'WATER I /
EASEMENT
W.D. 90
MAPLEWOODPARK BOUNDARY I /
I I
i I I I I v
P ESA
s �etp
5309 ShqsholeAve. NW �• oP usy
® Seanle, WA 98107
91
P: (206)789-96i
F: (206)789-968486
yy y E
5 BURIED UTILITIES NAREA
! PLEASE CALL BEFORE YOU ING ��oNAL
1ZM4245555 NO.
AGENCY PERMIT SUBMITTAL
PACE ENG$NFFHS. NC ¢ux 1•=40' „ ,�� CITY OF EAST RENTON LIFT STATION JUULY2011
.B RENTON ELIMINATION
,m �� DATUM u0U"u1 uWic Works Dept. TEMPORARY EROSION AND SEDIMENT 6-02
PIBr1rm1
REVISION BY DATE APPR - 'r""'®1_ CONTROL PLAN I — a'
I
I
I
I
I
p
I
I
I
I
I
I
I
I
I
H
I
I
KING COUNTY WETLAND
AND STREAM BUFFER
LIMITS aw
ow-lor/t CP#7
M-175= 552 61
(rCONSlRUCTiON N-178moaB
EASEMENT' (TYP) E LIMITS OF 'I'm
.979
CO',ISTIRUCTION WYY)':-
14•
2 B 12" 12% 0 Waft
6'
:A/0_15 ---------- T L
C
1, DTP-4
F
rn _20. NE Nl EA4MENT Cryp(,,,
co 14 /*
GENERAL NOTES:
SlORMWATER
A.
EXISTING SURVEY CONDUCTED MAY 2D09 IDENTIFIES TREES
DETENTION
6 INCHES D3H AND LARGER. CONTRACTOR TO REMOVE ALL
POND
TREES AND SHRUBBERY WITHIN LIMITS OF CONSTRUCTION.
IE-=7 G
WHERE TREES AND SHRUBBERY EXTEND OUTSIDE OF LIMITS
OF CONSTRUCTION REMOVE AS REQUIRED. BACKFILL WITH
NATIVE MATERIAL. PROTECT AND RESTORE VEGETATION
PER SECTION 1 -07.16(2) UNLESS OTHERWISE INDICATED.
I
B.
EAST RENTON LIFT STATION FACILITY SHALL BE FENCED TO
REV-39U
-
E '0 MH 6314 079
PREVENT ENTRY AT ALL TIMES DURING CONSTRUCTION.
(III
RIM EL 395.92
:WIN= .17(W)
C.
EAST RENTON LIFT STATION SHALL REMAIN IN SERVICE AT
W OUT - 370.32(E)
ALL TIMES THROUGH COMPLETION OF THE PROJECT.
0
CONTRACTOR TO MAINTAIN DRIVABLE ACCESS TOTHE
EXISTING EAST RENTON LIFT STATION AND ACCESS TO ALL
OF ITS FACILITIES FOR CITY PERSONNEL ATALL TNES.
D.
RELOCATE ALL SIGNS AFFECTED BY CONSTRUCTION,
12' W
RE -INSTALL AT COMPLETION OF CONSTRUCTION.
'Dip
KEY NOTES:
TEMPORARILY REMOVE R—. TO FA.ILITATEACC.SS.
REPLACE AT COMPLETION OF CONSTRUCTION.
E-39,.35
30 CPEP-
TEMPORARILY RELOCATE FENCE TO FACLITATE
7
INSTALLATION OF SEWER AND OTHER CONSTRUCTION
>
ACTIVITIES. REPLACE AT COMPLETION OF CONSTRUCTION.
REMOVE AND REPLACE WITH NEW SS MIA. SEE CIVIL DWGS
FOROETALS.
VALVE
\REMOVE
O
AND INSTALL NEW S.. SEE CIVIL DWGS FOR
VAUL I
DETAILS.
ECT
B GG
5
ABANDON 12- SS. SEE crVIL DWGS FOR DETAILS.
6
SEE DWG C-05 FOR MH MODIFICATIONS. REMOVE INSIDE
PUMP 1
DROP CONNECTIONS PRIOR TO MH MODIFICATIONS.
REMOVE AND REPLACE MONUMENT PER CITY STD PLAN
HR-04, SIM. EXTEND CONC RING TO GRADE, NO AC.
�MAPLEWOOD
MONUMENT SHALL BE LOCATED AND RE-ESTABLLSHEDBY
ESTATES
A LICENSED SURVEYOR.
<
AC PAVEMENT RESTORATION LIMITS. SAW CUT MIN I-
W_ L
BEYOND EDGE OF TRENCH.
EAST RENTON
O
DECOMMISSION AND DEMO EXIST LIFT STATION PER
LIFT STATION
FACILITY
SUBSECTION 10.01738 AFTER SUBSTANTIAL COMPLETION
OF SEWER PIPELINE.
-EMERGENCY
10
REMOVE WOOD FENCE, METAL GATE AND WOOD POSTS TO
STORAGE WELL
FACILITATE EQPT ACCESS. SEE CIVIL DWGS FOR
EXIST 60V MH 5314 080
REPLACEMENT. li
RIM EL - 394.91
INV IN - 369.71 (W)
11
SEE DWG C- FOR GRADE SCARIFICATION AND STRAW
INV IN - 3S4,56(E)
REQUIREMENTS.
INVO -369.7,1(N) _il'Wh3E — —*(§ — — -ly-_
�r — 70— 1
O\ __
MIT Tit'll .2
— 2
z� '� y/ %� SF�•rQcy li�� y/ I /r-ma>r-�-°°'�I('- °`--�8--' ."` /,/,
'a
, In 4 _0 ;7
7 r/&M�
BRIAR ILLS
JE B%WIW-370.92
E fQIPM-31M.52
IE 12*00("A2
#14-� OW
835D-11.14bX
IE
IE 30.0I
M-177437.113
E-131M.107
V-LV-374,17
(I)Mt DJ)
K
91
U10ERW4=
LIMITS OF CONSTRUCTION (TYP) US
IALK
OINC VALK
/ -
Fl
4 8ISS
148th PL SE E
wo
CB RU
- - - - - - - - IE WOO(N"o.
IE 30'0w(s)-vo.20
ALK OU.8)
oalO
WAU(
8
3 EXIST MH 5314 086
5
RIM EL=37 .95
CB MI-37-163 "-I;==
l I CE fr0WP(SV)-371.73 E-13168I IE OUT-367AMS)
TBIN-37-171
EXIST MH 5314 090 RIM EL - 374.53
:W INNIN - 365.03 (N.E.W)
0
UT.365 .03(8)
4orcarolla
BURIED UTILITIES IqAREA
PLEASE CALL BEFORE YOU D8
1.800A24.55M
P LAN
�C L�L�E
F .2= . 1�.
a
6 -Iro FIT
WE Q15
3
LIM ITS .13&STRUCTION (TYP)
380- -
"I __ __•
� 0 -------
1181. aDm) 16
I? If
cpjI2
ol CONSTRUCT RUCT 04 63m-ll.lnw/iv
ff EASEMENT YP) N-1778501"
E-13INIM32D
20'IERMANIEINII EASENIEN. (11, P)
CP430
I = 'C 77.
%/
.. . . . . . . . .
PIPEIM
11>
AGENCY PERMIT SUBMITTAL
i
1
L
r
1
u
L
I
N = 177422.96
- / E - 1316764.21
r N= 177453.38._.._.._.. _. _..Z.
I E = 1316765.16
SEE SHEET C-06 -
BRIAR HILLS
No.4
N = 177602.91
N = 177408.22 / E = 1316777.18
E = 1316781.00 I
E = 1316818.97
11
N=177449.14 I
I'
i
E = 1316844.86
l
N = 177422.27
I
E = 1316844.22
I
I
\
I
\
I
I
I
I
I
R` T T
A
I PARKSIDE
t
COURTT
GENERAL NOTES:
c-07
N = 178282.36
I
:
N = 178349 58
A.
EXISTING SURVEY CONDUCTED MAY 2009 IDENTIFIES
E = 1316495.53
E = 1316495.86
TREES 6 INCHES DBH AND LARGER. NOT ALL TREES AND
I
SHRUBBERY ARE SHOWN. LIMITS OF WETLANDS AND
r - `^ = -
,_ �_-- _- _
,-. -. -_�
STREAMS ARE APPROXIMATE.
/ I
y
I
B.
ALL CONSTRUCTION ACTIVITIES SHALL BE CONTAINED
/ SEE SHEET C-05
I
I
WITHIN THELIMITSOFCONSTRUCTIONAND AVOID
--MAPLEWOOD PARK
- - '
/
I I
STORMWATER
DETENTION I
DIRECT WETLAND DISTURBANCE.
PON�D
`
I
C.
DISTURBED SHALL BTHE
CONCLUSION OF THE PROJECT PER CONTRACT
/ I 20' PERMANENT
177929.79 EASEMENT (TYP)
/
/
I N = 178279.84
E = 1316594.08
I \I.
DOCUMENTS.
/ E = 1316596.21
/ SEES H EET, ,C-O6 -
r/ LIMITS OFr( C 1 �( �`( T2i { ' 00- 1' , •�..
`jk
T •�J,r Jr
5
15' SS 3 C-08
\
I
I I I
I
I
\ I I
D.
EAST RENTON LIFT STATION SHALL REMAIN IN SERVICE
AT ALL TIMES THROUGH COMPLETION OF THE
PROJECT.CONTRACTOR O MAINTAIN DRIVABLE ACCESS
TO THE EXISTING EAST RENTON LIFT STATION AND
ACCESS TO ALL OF ITS FACILITIES FOR CITY PERSONNEL
CONSTRUCTION 1 \ _ _ 6 � * I 'G-
r - }
CONSTRUCTION 5p 4+50 J_ 4aW' 3+50 3*00 __ _ 2_� L _+00
•10'/ . S1 ,J.� '
EASEMENT (TYP)i"�i.'Y`
`/ _ _ _ y�( -• / 6' ,A,
' I� / / `� m 1 :•0.'a'' E:clJ316624'.DO `
N = 177929.97
MAE"'
o
Q `
N = 177612.94 I
E = 1316819.79 1,
k-
A
1 t
N = 178289.76
9
�' t ,
b N
''•, °, rn s ``"t�" fixN..;�`' \ E = 1316727.70
T CREEK: �9. `�%T_
.�.1:. ) 1 )W'.,
of o _.......___
A e,
,�. •��suj:`>x.. � � � �
,
- --_..._.._... . �, 1
- •: � ��
_:
��N%%'"•
WETLANDS (TYP)
MAPLEWOOD PARK
/ UNINCORPORATF__
/
KING COUNTY
g
/
CITY OF RENTON J
/
LIMITS
/
/
12' W
\
DIP
KING COUNTY WETLAND AND STREAM BUFFER LIMITS
\
/
\
/
N = 178314.46
/
EE=1317-
PLAN
UA� D
FILE: 8235C00-C-100
MAPLEWOOD PARK BOUNDARY
C7
4
9 4603�2G.
BURIED UTILITIES IN AREA �q'P IsTt.'•
PLEASE CALL BEFORE YOU DIG �sSIONAL F'�4
1.8DOA24.5555 NO.
PACE ENGWEERS, INC
TJW
a w EDL
PO®9Mc
REVISION BY DATE APPR
1' = 40.
�� DATUM
30' WATER
EASEMENT
W.D. 90
I
I
1
I
I
•
, -J
'
AT ALL TIMES
_ I _-~
E.
LOCATION OF EXISTING UTILITIES SHOWN IS BASED ON
¢,J .... _
0 5 ,i-t--- 12' SS 5
/
RECORD DRAWINGS AND FIELD LOCATES. ALL EXISTING
UTILITIES ARE SHOWN APPROXIMATE. CONTRACTOR
SHALL VERIFY THE LOCATION OF ALL EXISTING UTILITIES
1,
AFFECTED BY THIS PROJECT PRIOR TO BEGINNING
w ol�.p`
_ 1,_
VALVE 1
VAULT I I
F.
WORK.
INSTALL BURIED PIPE IN ACCORDANCE WITH CITY
STANDARD PLAN 405. BACKFILL PIPELINE BETWEEN STA
ELECT I I
GO• I
r BIDG
0+75 AND STA 3+50 AND STA 8+60 AND STA 10+30WITH
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. OTHERWISE, BACKFILL WITH GRAVEL
!!�I I
EAST RENTON
f I LIFT STATION
WET FACILITY
/
BORROW. COMPACT T092%MDD BETWEEN STA 1+00
AND STA 8+58, AND 95% MDD PER ASTM D1557 FOR ALL
OTHER PIPELINE.
WELL I
/
G.
IP EXCAVATIONS L P R
P EUNE EXCA O S SHALL BE CLOSED U O
- N Y
EMERGE C
PROTECTED PER SECTION 1-07.23 1 AT THE END OF
( )
- I. STORAGE WELL I
a N - 178321.61
E = 1316728.10/ I
\ I�
)
EACH WORK DAY.
KEY NOTES:
SEE PLAN FOR BYPASS PUMPING DETAILS.
PROVIDE TEMPORARY CHAIN LINK GATES WITH DO NOT
I� /
ENTER, CONSTRUCTION SIGNS AT ALL SITE ACCESS
LOCATIONS. LOCK GATES AT THE END OF EACH WORK
CONTRACTOR I
DAY,
4
STAGING AREA
I
O
PROVIDE TRACER WIRE AND UNDERGROUND WARNING
TAPE PER SUB -SECTION 10.15052. SEE DWGS C-05 6 G-06
' / I
FOR TRACING WIRE STATION DETAILS.
OUPON
FINAL COMPLETION OF CONSTRUCTION,
CONTRACTOR TO SCARIFY EXIST GRADE FROM STA 1+00
TO PAVEMENT AT 148TH PL SE WITHIN THE LIMITS OF
t MAPLEWOOD
CONSTRUCTION AND COVER WITH 2 INCHES CERTIFIED
WEED -FREE STRAW.
ESTATES
O
PROVIDE UNDERGROUND WARNING TAPE PER
�
SUB -SECTION 10.15052.
I
6' FENCE (TYP)
I
1 1 CITY OF RENTON
I 1
•� I '•) II N = 178329.69
' E = 1317042.35 / \
I x-..,.-G 2 \
UTILITY AND ACCESS
EASEMENT TO CITY
/ .' / ' ` 406, .` O•p/` y OF RENTON
cC,A
I
I
_ I '
AGENCY PERMIT SUBMITTAL
CITY OF EAST RENTON LIFT STATION �RJULY2011
RENTON ELIMINATION
Plan inouIIdIIgIPublicWorksDept. SITE AND PIPING PLAN C-04
I
1
1 (
GENERAL NOTES:
A KING COUNTY W _ILAND / I I
ANOSTREAMBUFFER \
A. INSTALL BURIED PIPE IN ACCORDANCE WITH CITY
STANDARD PLAN 405. BACKFLL PIPELINE BETWEEN STA
LIMITS /
I
0+75ANO STA 3+50 AND STA B-60 AND STA 10+30 WITH
\STORMWATER
GRAVELBORROW PER SECTIO49-03.14(1). BACKFLLL ALL
OTHER PIPELINE WITH NATIVE MATERIAL WHERE SUITABLE.
11.25'HORZ BEND _ DETENTION
STA 4+91.01 i I I POND
N =, 77901.027 / g G \
E =131661fi.39 Cl/3 9� iE=390.7
10 CONSFRUCI ION 11.25' VERT BEND 63W-10.3d2C CP(7 i w'CPEP C200 TRACING WIRE
11.25' VERT BEND N-178036.852 LIMAS OF COVST RUCTION _ 635D',07R/L STATION
EASEM1tENI (IYP) STA 4+36 / F-t 316612.612 ��) N=178210085 aR-8RA5 DISC T1(P
B \
`� -- 6 I4 I N',17795604 N=1,77982.03 D-n"350.63 E=13,6601.978 STREAM 6J56-10.21A
I STA 4+10 TEMPORARY +}
EI.1316616.05. ,YAIDFR 12'CT ElEV=390.S9 N-178779. I
/ IE=1316fi 5.90 C-07 CROSSING �� MANHOLE
I la ! E-1316606.
REMOVE ROCKS AND OTHER DEBRIS 4 INCHES AND
LARGER. OTHERWISE, BACKFLL WITH GRAVEL BORROW.
COMPACT TO 92%MDD BETWEEN STA 1+00 AND STA 8+58,
AND 95%MDD PER ASTM D1557 FOR ALL OTHER PIPELINE.
B. LIMR PVC JOINT DEFLECTION TOA MAX OF HALF MFRS
RECOMMENDED JOINT DEFLECTION.
C. PIPELINE EXCAVATIONS SHALL BE CLOSED UP OR
�V �. 11 12 II,,?2 6'CEC / CHANNELING
.( liln',1 1i ` 1 1/+\ 12- ry�y ` e'C1M7. c (DIN 1L6 C-07
535D- BR C
14 �' / I CEDAR /
\1 12 N.176+ 1.131 4�� O'C,KO.
(") �. ,18. �� 1 "`VJ6 E-13766I 59 J - 12'LTI�9. �' ( ! STA0-EXIST 5.7 MH 5314079
—
6 2pt'�- i- - _,
= ��
PROTECTED PER SECTION I-07.23(1)AT THE END OF EACH
WORK DAY.
Vi---`ri1'•-- —s- �— — ,_ — •�— p —
I; p — = - =— r ..
_
Z 6 _Y1`�` \� _`T} �\ D� •r-- _� �rn°'I�
—
KEY NOTES:
_
ABANDONED 12' SS. FILL WITH SAND
D\® 2 yy
2 CONTRACTOR TO VERIFY DEPTH BY POTHOLE PRIOR TO
'rn
`\ 1 . \ ✓J _ I _ 1 9 _ 3 f-4, DI
E+T t+ 1+00 -
'- �l- 3+00 - 2-`�L 2
,� ,+Sp 1+00 _ _ _
1 COMMENCING CONSTRUCTION.
_
\ 3+50 / - '\
(y�,
O i0 I 4 J 'µ�•(l{'� - - _
tF7��
N11 —� ``\ Irg1-�_ �� -� T-�1 OFF,,— �- ^� -L- . �_{,— J T'%- I i I -
` (� I/�`_'_ 6 2p' .3.' % 1' 'r\ (2)W.20'12
I 3
\ j 96
CORE DRILL AND CONNECT NEW SANITARY SEWER PIPING
O WITH KOR-N-SEAL BOOT WITH SST CONNECTOR, OR EQUAL.
O
m�- /��----
� -/
( - �_ % F-391 75
oc NEKI E MENT (TYPl'� to \ - - >reg • 9 22 / i+• l 1 `, _� G ' _--'-w I ,• 3p•CpEp_
22 \ / B, u�N� O `jjpd,T.T I .... I p,
m W 1t ' JOY \ f " :::::..�,
/ J / rn
REMOVE MH CONE TO FACT ITATE CONSTRUCTION
ACTNITIES AS REDD. REINSTALL TO MATCH EXISTING.
SEALWATERTIGHT.
w 1 ,�
m-II j • r�l -P 1 I I ` /I / / '..'.':::..'; :::: IE 30'CPEP(�W-J90.79 4 0" `
1 , / q ENCE'
- 11 I p. VALVE VAULT
`\ ` '•' �' .' - t 12• I
YA \ la •Q^ I I 6 i
i f2 �� I :::4:
5 CHANNEL PER CITY STD PLAN 400.1.
/off
C 6 > INSTALL HYDROPHILIC WATERSTOP HORIZONTALLY
AROUND INSIDE FACE OF EXIST MH. MIN 12' BELOW INV OF
CHANNEL. MC-201 OM BY ADEKA, HYDROTITE CJ-07253K BY
-_ _ _
\ \ / / I \
—
I � i
3a-gyp r P 4
": 1. I
GREENSTREAK OREO UAL. ADHERE WATERSTOP TO EXIST
MH USING A SINGLE COMPONENT WATER -SWELLING
.'.::.::::'.:'.' - .':.' :.'::.':I'.':.': O 12 12' SS " SEALANT, ULTRA SEAL P-201 BY ADEKA, LEAKMASTER LV-1
- - - _ Z�•1 l / / , / 1" gY 1 :a':.-: •:." 1 1 BY GREENSTREAK, OR EQUAL. AFTER CONC WAS TAKEN
♦ BLDG
- INITIAL SET SEAL JOINT WITH SYNTHETIC RUBBER SEALING
ELECI
- - 1 1i Q
COMPOUND SIKAFLEX 2c NS OR SL ORE UAL PER
- - O
, 3 d• 5188
i
77 TYP
i -1 y i6' 0'
/ gyp,,
M P 32 \ A LEWOOD
1 '
2°(
2`^ \
eI i ESTATES
; co O �1aa4u ,rw
Or
ON
� �-�'-'''''-''':•''�":''�"F':'':'�:'':''�:'�:''�':''
� I i i 1 26 i 1 � , , : �\ . NEI WELL
PLAN EAST RE NTON
EXIST 60'0 MH 5314 080 LIFT STATION
SCALE: 1' • 20' STA 0+00.00 FACILITY
FILE: 8235COO C-100
424.221 LF I
I
I to
I 75.771.1
395
+
J rn
395
em
v>
>m
APPROXIMATE EXIST GRADE
%=
mN
W
mN
L. NNW
�-
t r SOIL 35
390
.WC
390
((ppp
I
STEWART
x CREEK
2
STA 0+97.
STA 0+55_
5 6
~
2
O
EX30'SD
6
EX30'SD
385 W
<I N
/
.
IE I I.—
IE 390.U.
385
I
um—
Lu
Lu
�^
2
I
I
15' SS ® 0.007 MIN
MANHOLE
CHANNELING
}
C-07 ''i
1 FILL WITH
CONC ITYP 2)
�
380
+
LO
4 3 w a
0,
_
n
380
1:
375 Lu
15'
SS ® 0.009 MIN
—
li
375
370 Q
I\1.JrC.
5
/._370
�1
T/
I
1 S PVC SOR 35
$s'
�m
$
S
O
3
E
Z.
z Q
f
Q
360
360
STA 5+00 STA 4+50 STA 4+00 STA 3+50 STA 3+00 STA 2+50 STA 2+00 STA 1+50 STA 1+00 STA 0+50
STA 0+W
PROFILE
SCALE: HORIZ:1'=20'VERT:1'•5 AGENCY
C,(,3
PERMIT SUBMITTAL
FILE: 8235C00-C-100
PACE ENGINEERS. WC _'JULY 20.1
AS INDICATED im CITY OF EAST RENTON LIFT STATION
RENTON ELIMINATION
'
BURIED UTILITIES NN€A
PLEASE CALL BEFORE YOU DIG Al, t� u.�eMc Pen ringBu9v � EPID cWaks Deft PIPING PLAN AND
PROFILE —STA O+OO -STA 5+00 6-05
1IM4243555 NO. REVISION BY DATE APPR """�1p1101
'^ o.
=
p
GENERAL NOTES:
A. INSTALL BURIED PIPE IN
ACCORDANCEWITH CITYSTANDARD
KING COUu tV W=TIA^:D ANO ST Ri3J.1 -
/ �s�nTC
IP
P. BACKFILL PIPELINE
BETWEENSTA0+75ANDSTA3+SD
g - 11• IB° = AND STA 8+60 AND STA 10+30TH
tagq 1NI
.,
DUf f ER LIAIITS
.,1_ •r�,
GRAVEL BORROW PER SECTION
9-03.14(t} BACKFILL ALL OTHER
_
. I O ,TRH p • / PIPELINE WITH NATIVE MATERIAL
_
, \ / N
' Y ` WHERE SUITABLE. REMOVE ROCKS
�r
, 1.25° HORZ BEND
BRIAR HILLS / STA 7+91.99
`__
/
/
- - --} -- -.�.
/
24' i p,¢ p� -�C� p,� =I D AND OTHER DEBRIS 4 INCHES AND
" / �_ (r LARGER. OTHERWISE, BACKFLL
No.4
N=177642.fi63
E_=1316755.79
/
1'-~
74
+ WITH GRAVEL BORROW. COMPACT
Y -,� �'-- '� )O TO 92% MUD BETWEE N STA I+00 AND
/ __ �� O
SDI01 8W=]7412 1 I
E IYC1PjE}37652
E tYO1P(M}369.62 {{
IDI I
4 OVERLAY AND GRIND
�pp4-,8B/SS DM pMxoi 11.25°
635D-t1.14BY
VERT BEND
STA 8+00
/ /
1] I / KING CO._�i_-''
/ �`�
6'-18"Q / 5 STA 8+58, AND 95%MDD PER ASTM
N 01557 FOR ALL OTHER PIPELINE.
OAPLE QUSFER / � 1 � 1
i Ij1m B. LIMIT PVC JOINT DEFLECTION TO
/ 5+ ^��
IE 30'OW(N)+38902
IE 30'C11P(5}368.92 Y
X=177437.113
E-131680 to
BfV=774.17
N-177638.25
E=1316762.48
/ I PUBIS
0 , S SS
I / 8
}}��
LMIt.O 4SI RJCIION
1N MAX OF HALF MFRS RECOMMENDED
/ f =
(I'"') JOINT DEFLECTION.
-� \ / `%^---_. , Y m
-�
(DM )S) LMI1S Or COVSf:.' 110N '7w1 -
11.25'VERABEND
STA 8+26.5
�CC-/Y
�380-�='-_
�
/
� i � "'
�jf�cy� I �. PIPELINE EXCAVATIONS SHALL BE
\ CLOSED OR
-E'=13t6784:60
/ L
` `
B'CEOUt
-- -
Sxd3 6'(IDM .l �ry-----'UP PROTECTED PER
/ Ib SECTION I-07.23(1) AT THE END OF
/ w
`l,})� / 1Y EACH WORK DAY.
X
-
'
�t
11.25°HORZ BEND
/\\ STA 5+67.86 0
� Y
------ ROLLED QA✓B
2 5 9
t4Blh PL. SE 4 (TVP)
_-• ��
\
_ i�
� 6 E=]T -
® 30°Qm
�0'COU. E, IION
EASE. (t"�)
/ \ /
_ KEY NOTES:
E 316531.84
1 CONTRACTOR TO VERIFY DEPTH BY
6 ` BISD-17.17»1/a O
' N-177864679 POTHOLE PRIOR TO COMMENCING
/ CONSTRUCTION.
E-131668L33T
E1EVti1BO77
-- --- B ti r`•
50� ,°... '. •:., 1
° J -
-
0 EE 30 aff"}4]0.35
E30'GP(5)a370.70
11.25° HORZ BEND
STA 7+12.92
11.25° HORZ BEND. CUT UPSIZED PENETRATION WITH
STA 6+46.93:;;:; ` POW ER SAW, NO HAMMERING
-SEXIST
X MH 531a 090 )
OD u V
dNe
-
);
' / C200 TRACING WIRE
J
N =/7769823 /
E =1316699.54
1S SS
/ N-177752 87: ' i ALLOWED. CONNECT NEW
E =tat 6662.55 SANFTARY SEWER PIPING WITH NPC
-STA 10+3073
1r
,S SS am NRX
'Z
-.
I TYPI STATION
.� '
/ x�
\ 1 / \ f / ' j WATER TOP GROUTING RING, .OR
WITH
EOUVOID Alrr GROUT.
L. NEW
42 INSTALL
INSTALL NEW 60' SANITARY
-
6
/' /
`, O
Y MANHOLE PER CITY STD PLAN
I
f8
I I
C7 P
\ 6351-11.IIYN/p
�M37383 Ih177W7.210
E8'OfP(SW)-371.73 b1316BM 701
60" 3 0
I MH 5314086
STA B+57.86
/ `- 20 �'EKMANcNl EASEMLN I(1") �"�/ �/" t 400.1.
/
\AT OF
mI
I
5(
DEWJ7L7t
\
�PD
l 1H7i1a7.7W
C-1316745522
DLV-37L22®
�i CONSTRUCTION, PROVIDE 1 T
' �/ CONSTRUCTION,
� OVERLAY FOR ALL PAVEMENT
/ ° p WITHIN LIMITS OF CONSTRUCTION.
/ GRIND EXIST AC 5 FEET FROM ALL
CURBS.
s
I
/x
BURIED GAS 5 REMOVE CHANNELING TO MATCH
O
a
o�
rwDn¢ UPSIZED PIPE DIA. RECHANNEL
PER CITY STD PLAN 400.1 M S
CHANNEL ONLY, AS RE00.
A
PLANO
CHAIN-L INK GATE ALNDLFENCE TO
SCALE: t' - 20'
CURB EDGE PER WSDOT STD PLAN
FILE: 8235C00-C-100
LJ0.10-00 AND WSDOT SECTION
8-12.
72.31 LF I
109.66 LI
250.01 LF
385
I
I
Z
m_
p
m_
C]
o
0
m
0
m APPROXIMATE
m ya EXISTING
o GRADE
'�,
0
m
385
y
w
Na
a
Nn
lay
o
�11
aK:il
NNW
IA
yNW
NIX"
yl
t yyn
yNW
12NNW
yryW
380
380
APPROXIMATE
EXISTING GRADE
1
a
0 o-
9
Q
W
375
15' SS @ 0.009 MIN
I _
I
W 375
I
W
W
I
Flo
�$
(0
370
-
1 �- _ _ @°
370
,5 y`'
1 s' SS @ o.009
+
LO
~
cn
I 365
I
I
15 SS @ 0.0143
W 365
2
u-
J
U
2 5
0
LJJ
J
360
W
W
W
Q 360
15'PVC
SUR 35
!n
15'PVCSDR35
3
I
W
Z
5' SS @ 0.D04Zia
-�
2
`=
J
=
355
s 355
�
'uN7��
Q
a
N � � �
350
<I
in a � _
''o
-
350
STA 10+50 STA 10+00
STA 9+50 STA 9+00
STA 8+50 STA 8+00
STA 7+50 STA
7+00 STA 6+50 STA 6+00 STA 5+50 STA 5+00
PROFILE
r
M.
VERT:1'=S
SCALE: HORIZ:=00-
AGENCY PERMIT SUBMITTAL
s
*,. ®
� �
�
C4,
l^ dF iLlgy7 f.
� � �•' �
-100
FILE:8235CL10-C-100
_
PI E"Glnmas, mG
AS INDICATED xw=
CITY OF EAST RENT LIFT STATION � uLrzD11
7JV/ R E NTO N ELIMINATION
ATION _
��
L$I
g, +6692�p R
BURIEDUTILITI 't7 e�7siF+'- yN
�0W.L
EGL
w�
DATUM Prenrhg6uffcbng/Pumc Worts Dept. PIPING PLAN AND PROFILE - STA 5+00 - STA 10+31 o C-06
y
YACREA
PLEASE CALL BEFORE YOU D%'. flx'
REVISION BY DATE
APPR
IM04245555
NO,
FILE: 8235C70-C-08
INSTALL TEMPORARY GRAVEL BEFORE
GRADING PHASE OF PROJECT,
REMOVE PRIOR TO PAVEMENT
INSTALLATION
PLAN
INSTALL TEMPORARY FILTER FABRIC
BETWEEN FRAME AND GRATE OF ALL
CATCH BASINS AND INLETS INSIDE
OR ADJACENT TO DISTURBED AREAS.
NOTE: ONLY INSTALL
TEMPORARY GRAVEL AROUND
CATCH BASINS IN UNPAVED
AREAS. USE FILTER FABRIC TO
PROTECT EXISTING CATCH
BASINS IN PAVED AREAS.
PLAN
1 TEMPORARY
CATCH
BASIN P
2 SCALE: NTS
FILE: 8235C10-C-08
4' - 6" MOUND -
18" TOPSOIL. MATCH
EXISTING GRADE
4"- 6" MOUND
5
s TRENCH BACKFILL DETAIL TYP
C-04 STA 1.00 - STA 8+63 NTS
s
CPI U ,�®
s
i
E
c
i
r ESA
5309 S hale, e Ave. NW
Seattle, WA NW
P: (206) 789-9658
F: (206) 789.9684
BURIED UTILITIES IN AREA
PLEASE CALL BEFORE YOU DIG
1.800.424.5555
FILTER FABRIC MATERIAL 60" WIDE
�j ROLLS. USE STAPLES OR WIRE
ORINGS TO ATTACH FABRIC TO WIRE
5
2" BY 2" BY 14 GA. WIRED
FABRIC OR EQUIV,
n n
'I = � _ FILTER FABRIC
MATERIAL
-� - - I O FABRIC OR EQUIV.
WIRE
II MB BB017 TRENCHILT MA_` II
II6" MAX. H
2 > 2- BY 4" WOOD POST
O6 2' BY 4" WOOD POSTS, STANDARD OR PROVIDE 3/4--1.5 ASHED GRAVEL
BETTER OR EQUAL ALTERNATE SECTION O BACKFILL IN TRENCH AND ON BOTH SIDES
OF FILTER FENCE FABRIC ON THE
SURFACE
SILT FENCE DETAIL AND NOTES
C-02 SCALE: NTS
FILE: 8235C10-C-08
SACKS SHALL BE #10 JUTE BURLAP
OR APPROVED ALTERNATE FILLED
WITH 48 TO 55 LBS. OF PEA GRAVEL
BACKFILL FOR DRAINS.
L
PLAN
SCALE: NTS
FILE: 8235C10-C-08
INSTALL ROUNDED COBBLE
AND WASH SAND MIX TO
DEPTH OF 12' MATCH EX
GRADE
CLSM PER WSDOT
SECTION 2-09.3(1)E
NATIVE SOIL
INSTALL APPROXIMATELY 3FEET
ABOVE CHANNEL INVERT. ALIGN
LOW POINT IN DAM WITH CENTER
OF CHANNEL.
ADD VISQUEEN - - ,
THROUGH FILLED
BURLAP SACK STACK \
PLACE SACKS FIRMLY
AGAINST GROUND LINE
AND ADJACENT SACKS.
OOOv O-O-R/,�
FLOWLINE
SECTION A
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:
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.
OS THE 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 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.
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.
j64
c-
4
C-08
_ - g�yCC -
BACKFILL ONLY
e I 12
-
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13
s TRENCH BACKFILL STREAM AT CROSSING
DETAIL (TYP) NTS
STREAM DEWATERING PLAN
C-02 SCALE: 1' = 10'-0"
FILE: 8235C00-C-100
AGENCY PERMIT SUBMITTAL
C 2) PLANT LIVE STAKES THROUGH COIR
BLANKET ON STEEP SLOPE RIPARIAN
4' LAYER OF WOODCHIP MULCH, FEATHER MULCH
AREA
PLANT TREES AND O
PLANT LIVE, DORMANT STAKES BETWEEN
SQUARE CUT
TO EDGE OF ROOTBALL, EXTEND 6' BEYOND
WATERING BASIN CIRCLE
SHRUBS IN UPLAND AREA
0.5 AND 1 INCH IN DIAMETER
SCARIFY ROOTBALL, SPREAD
MINIMUM OF 2 BUDS
ROOTS AND CUT
TO FIT
4-LAYER OF
EXPOSED
OODCHIP MULCH
).
A
zw
MAKE PILOT HOLES IN
K
3
FINISH
GRADE
EXISTING SOIL WITH REBAR.
_
-
TAMP SOIL AROUND LIVE
< � m
STAKES.
h = O
` BACKFILL WITH NATIVE SOIL ONLY
SCARIFY EDGES OF PLANTING HOLE TO ALLOW FOR
INSTALL COIR
ROOT PENETRATION
BLANKET ON
SLOPE PER CITY/�j\\���\�j\\�j�\/
\\j\\�j��\��\i
ANGLE CUT AT 45
DEGREES
BOTTOM OF ROOTBALL RESTING ON
STANDARD PLAN
3X ROOTBALL DIAMETER
UNDISTURBED SOIL
213.10
(7 O.C. SPACING (TYP) 17 O.C. SPACING (TYP) 1
STREAM
BANK PLANTING SECTION TYP
SEc'nQN
i� LIVE STAKE PLANTING DETAIL
(TYP
3
SE�Il4t1
TREE/SHRUB PLANTING DETAIL TYP
L-01
NTS
L-01
NTS
L-01
NTS
ESA
5309 Shilshole Ave. NW
i Seattle, WA 98107
P: (206) 789-9658
F: (2D6) 789-9684
i
BURIED UTILITIES IN AREA
PLEASE CALL BEFORE YOU DIG
1.800.424.5555
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:
OSTABILIZE 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