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STRUCTURAL CIVIL SEISMIC ENGINEERING � /f// �/ i��� / �����
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ENGINEERING REPORT -�
Drainage Report (TIR) �%
Renton Technical College, Building K �;/
Renton,WA �
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PREPARED FOR: �
Renton Technical College �
3000 NE Fourth Street •,�;
Renton ,WA 98056-4195 ��
425-235-2352 %
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PREPARED THROUGH: %
9 A• 'JA C McGranahan Architects �
v ��' �'�sy,ti� 2111 PacificAvenue, Suite 100 �
���`� �• �; Tacoma,WA 98402 %
w� � 1 253.383.3084 �
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1 � PREPARED BY: '��
a3ss� �' COUGHLIN PORTER LUNDEEN �
�,o �
�'s���r s1��` �,� 801 Second Avenue, Suite 900 j
S��NAL �~
Seattle,WA 981o4
P 206.343.0460 j
CONTACT/ Alan Jacobson, P.E.
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801 SEC�NC AVENUE. SUiTE 9J0 SEA'.TLE �VA 98'Od : P 206.3:3 O�iEi, ' cp �nc com /
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KING COUrTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
Part 1 PROJECT OWNER AND Part 2 PRO,:ECT LOCATION AND
PROJECT ENGINEER DESCRIPTION
P-o)ect owner Renton Technical College Project Name Building K Renovation
Phone (425) 235-5839 DDES Permit# N/A
Address 3000 NE 4th Street �ocation Township 23 ,
Renton, WA 98056 Range 5
ProjectEngineer K@tl WI@fS@fll'cl, P.E. Section 9
Gompany Couqhlin Porter Lundeen Site Address 3000 NE 4th Street
Phone 206-343-0460
Part 3 TYPE OF PERMIT APPLICATION Part 4 OTHER REVIEWS AND PERMITS
U Landuse Services ❑ DFW HPA � Shoreline
Subcivison / Short Subd. I UPD Management
❑ COE 404
� Buildi Services ❑ DUE Dam Safety � Structural
M�F f ommeri / SFR RockeryPJaulU
❑ Clearing and Grading ❑ FEVIA Floodplain � ESA Section 7
❑ Right-of-Way Use ❑ �DE We:lands '
❑ Other ❑ Other
Pa�t 5 PLAN AND REPORT INFORMATI�N
Technical Information Report Site Improvement Plan (Engr.Plans)
Type of Drainage Review Fu II / Targeted / Type(circle one): �' / Modified /
(circle): Large Site Smatl Site
Date(include revision Jan 26, 2015 Date(inr,lude revision Jan 26, 2015
dates): dates):
Date of Final: Date of Final:
Part 6 ADJUSTMENT APPROVALS
Type(circle one): Standa / Complex / Preapplicatior� I Experimental f Blanket
Descrip6on: (include condtions in TIR Section 2)
nate nf A roval:
?009 Surface Water Design Manual 1/9/2009
1
K1NG COUI�TY, WASHINGTON, SURFACE WATER DESIGN MANUAL
TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
' Part 7 MONITORING REQUIREMENTS
Monitonng Required: Yes /,.:� Describe:
Start Date:
Completion Date:
Part B SITE COMMUNITY AND DRAINAGE BAS�N
comm���ry Piar,:City of Renton
Special District Overlays� �Q
ora�na9e Bas�n: Peak Rate Flow Control Standard (Existing Conditions)
Stormwater Requirements: MatCh EX COtICI.
Part 9 ONSITE AND ADJACENT SFNSITIVE AREAS None
❑ River/Stream V Steep Slope ,
❑ Lake ❑ Erosion Hazard
❑ Wetlands ❑ Landsllde Haz2rd
❑ Closed Depression ❑ Coal Mine Hazard
❑ Floodplain ❑ Seismic Hazard
❑ Other ❑ Habitat Protection
❑
Pa�t 10 SOILS
Soil Type Slopes Erosion Potential
Mixed Fill & Outwash 0-10% low (paved or
buildings)
❑ High Groundwaber Table(within 5 feet) ❑ Sole S�urce Aquifer
❑ c�ther ❑ Seeps�Springs
❑ Additional Sheets Attached
2009 Surface Water Design htununl 1/9/2009
2
KING COJI�TY, 'JJASHINGTON, SURFACE WATLR D[SIGN MANUAI.
TECHNICAL INFORMATION REPORT {TIR) WORKSHEET
Part 11 DRAINAGE DESIGN LIMITATIONS None
REFERENCE LIMITATION!SITE CONSTRAINT
❑ Core 2—Offsite Analvsis
❑ SensitiveiCritical Areas
❑ SEPA
❑ Other __ _
❑
❑ Additlonal Sheets Attached
Part 12 TIR SUMMARY SHEET rovide one TIR Summa Sheet r Threshold Dischar e Area
Threshold Discharge Area:
name or d�sc�� r��►, Automotive Complex (Building K)
Core Requirements(all 8 apply)
Dischar e at Natural Lowtion Number of Natural Dischar e Locations: 1
Off�ite Anslysis Level: ;1; / 2 / 3 dated:_1�/2014
Flow Cnntrol Level: 1 / 2 / 3 or Exemplior Number �
(incl.facilih�summary sheet) Small Site F3P�APs Match existing peak flows
Conveyance System Spill containment locatec at
Erosion and Sediment Control ESC Site 5upervisor: To Be determined
Contact Phone:
After Hours Nhone:
Maintenance and Operation Res�onsibflity: nvat / F'ublic
If Private, Maintenance Log R uired: Yes No
Financial Guarantees and Provided: Yes / Nc
Liabilit
Water Quality Type: � Basi �I 5ens.Lake / Enhanced Basicm / Bog
(includc faality summary sheet) o�Exem���on tvo. Maintain existing svstem
Landsca e Mana ement Plan: Yes / No
S ecial Re uirements as a licable
Ared Spedfic Dralnage Type: CDA�SDO I MDP/BP/LMP/Shared Fac.!None
R uirements Name:
Fbodplain�Floodwey Delineation Type: Wlajor / Minor 1 Exemption / None
100-year Base Flood Elevation(or range):
Datum:
Flood Protection Facilities Describe:
Source Control Describe landuse:
(comm.�ndustrial landuse) Describe any structural controls:
�009 Surfacc Watcr Desiga Manaa] 1/9/2009
3
K1NG COUNTY, WASHINGTON, SURFACE 1�4'ATER DES[GN MANUAL
TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
Oil Control High-use Site: Yes /
Treatment BMP:
Maintenance Agreemenr Yes /.No?
with whom? ��
Other Draina e Structures I�
Desc�be:
I
I
Part 13 EROSION AND SEDIA9ENT CONTROL REQUIREMENTS ��
MINIMUM ESC RE(]UIREMENTS MINIMUti1 ESC REQUIREMENTS I
DURING CONSTRUCTION AFTEK CUNSTRUCTION
� Clearin� Limits � Stabilize Exposed Surfaces
� Cover Measures � RPmove and Restore Temporary ESC Facilities
� Perime!er Protection � Clean and Remove All Silt and Debns, Ensure
� T�aific Area Stabilization Operation of PeRnanent Facilities
� Sed�nent Retention ❑ Flag Lknits of SAO and open space
preservafon areas
� Surface Water Collection ❑ Other
❑ Dewatering Control
� Dust Control
� Fbw Control
Part 14 STORMWATER FACILfTY DESCRIPTIONS Note: Include Facil' Summa and Sketch)
Flow Con`.rol T /Descri tion Water Quali � T eiDescri tion
❑ Detention �, ❑ Biofiltration
❑ Infittration ❑ Wetpool
❑ Regional Faciity ❑ Media Filtratbn
❑ Shared Facility ❑ Oil Control
� Flow Control Permeable ❑ Spill Control
BM� Concrete
❑ Flow C�ntrol BMPs
❑ Other
❑ Other
I
Re-use existing site facilities for
flow and water quality control
2009 Surfnce Water Dcsign Manual U9/2009
4
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
TECHNICAL INFORMATION REPORT (T1R� WORKSHEET
Part 15 EASEMENTS/TRACTS Part 16 STRUCTURAL ANALYSIS
❑ Drainage Easement ❑ Cast in Place Vault I
� Covenant FO� n2w BMPS ❑ Relaining Wall I
❑ Native Growth Protecaon Covenant ❑ Rockery>4' High
❑ Tract � Structural on Steep Slope
❑ Other ❑ Other
Pa�t 17 SIGNATURE OF PROFESSIONAL ENGINEER
I,or a civil enoineer under my supervision, have visited the sibe. Actual site conditions as observed were
incorporated into this worksheet and the attached Technical Information Report. To the best of my
know edge the information provided here is accurate.
Kenneth A. Wiersema P.E. 4/17/2015
_— — _ Signed/D3te ___J
�009 S�arf ce Water Deaign Manuel 1/9�2009
5
Technical Information Report
Building K Complex
Renton Technical College
Coughlin Porter Lundeen Project No.13 0055-03
Apri117,2015
Table of Contents
Section Page
I. PROJECTOVERVIEW............................................................................................................................2
GErrE[�.DescRrnnorr...........................................................................................................................................2
EXISTQJG DR.4[NAGE AND SITE CONDITIONS...........................................................................................................2
PROPOSED DRAIhAGE SYSTEM...............................................................................................................................3
II. PRELIMI�IARY COVDITIONS..............................................................................................................4
COREREQUIRE�IE1��'TS.............................................................................................................................................4
SPECIALREQUIREMENTS.........................................................................................................................................4
III. OFF-SITE ANALYSIS...............................................................................................................................6
IV. SI'I'E HYDROLOGY ANALYSIS AND DESIGN..................................................................................7
STORM RLnIOFF CONTROL AVALYSIS.....................................................................................................................7
WATER QUALITY ANALYSLS...................................................................................................................................8
V. CONVEYANCE ANALYSIS....................................................................................................................9
YI. SPECIAL REPORTS AND STUDIES...................................................................................................10
VII. BASIN A1�D CONiMUNITY PLANNING AREAS.............................................................................10
VIII. OTHER PERMITS...................................................................................................................................l0
IX. TEMPORARY EROSION AND SEDIMENT COI�ITROL................................................................l0
X. BOND QUANTITY WORKSHEET......................................................................................................12
XI. MAINTEI�ANCE AVD OPERATIONS viANi'AL.............................................................................12
�—
Figures
FIGURE 1-C1TY FLOW CONTROL REFERENCE 111AP
FIGURE 2-RECORD STORVI SYSTEMS(CITY GIS)
FIGURE 3-EXISTiNG SITE COVDITIONS
FIGURE 4-PROPOSED SI1'E CONDITIONS
Appendix
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APPENDIX A-STORM RUNOFF CONTROL AND W'ATER QUALITY CALCULATIONS
�I
COUGHLIN PORTER LUNDEEN 1 April l%,2015
I. PROJECT OVERVIEW
General Description
The following Technical Information Report(TIR)provides the technical information and design
background required for developing the Drainage and Temporary Erosion and Sedimentation
Control(TESC)Plan for the project. The design is for a Renovation and replacement of a building at
the Building K Complex on the Renton Technical College campus.The design is based on the
requirements set forth in the 2009 King County Surface Water Design Manual(KCSWDIv�,as
� adopted and modified by City of Renton(February 2010).
Building K Complex is located within the Renton Technical College campus,located at 3000
Northeast 4�Street in Renton,Washington(see Figure 2-Site Vicinity Map). T'he project site is in the
west-center portion of the campus,east of Kirkland Avenue Northeast. It is��ithin the Lower Cedar
River Community Basin and Drainage Sub-basin.
The Building K Complex consists of four buildings oriented around a central drive,within the main
campus.The renovation will make modernization and functional upgrades to three of the existing
buildings and re-build the fourth building in place.The existing site is almost entirely impervious
surface,either roof or pavement.Impervious and pollution generating surfaces will not significanfly
change from the existing condidons on site.
Since the project will not significantly change the existing storm water rates and volumes from the
site,the project will not provide ne��storm water runoff control or treatment per the 2009 King
County Surface Water Drainage Manual(KCSWDIvn as adopted by City of Renton.Storm water
Best Management Practices(BMI's)will be applied to the site.Existing flow and treatment systems
will be preserved and maintained on-site,and continue to function as currently installed.The
private,on-site storm system discharges to City storm systems west of the campus,for eventual
discharge to Lake Washington through City of Renton conveyance systems. For this project,no
changes to the public storm water system are proposed.
Existing Drainage and Site Conditions
The project site consists of approximately 3.3-acres in the west-central portion of the Renton
Technical College campus. The site is currently developed with four buildings arranged around a
paved drive. The site slopes from east to west at vary�ing slopes,most of the complex is on a flat
area,with all the buildings on the same floor level.To the east,the site slopes steeply up to existing
Campus parking areas off Monroe Avenue.Storm water collected from the campus discharges from
a private storm system along the western edge of the campus to City storm conveyance systems
�rest of the campus.The Building K complex site is approximately 71%imperoious(103,800-SF�
most of this surface will remain impervious.
Oil-water separators are located in various locations around the site;H�ater collected off the internal
cirives is routed through them prior to discharge from the site. '
The point of connection to City systems from the campus is south of this project site near Kirkland, ,
Jefferson A��enues and I�TE 5�h Pl. �
COUGHLIN PORTER LUNDEEN 2 Apri117,2015 '
Proposed Drainage System
The proposed project will renovate three of the buildings,without changing their foot print,and re-
build the central building in-place,expanding it over existing paved areas.About 2,100-SF of new
unpervious surface will be created for new pavements on adjacent existing planter areas. Surface
runoff generated from the renovated site will be directed to the existing site storm system. The
removal of the overhead entry from the east side of the site will add back about 725-SF of pervious
surface to the site. No change in storm water discharge points from the site will occur.
Existing oil-water separators will be maintained and continue to protect the downstream systems
from contamination.
The renovated site will have a net gain of about 1,400-SF of impervious area(2% of the project area).
Pollution generating area will decrease slightly as the replacement building will cover some areas of
the existing internal drive.
'I'he project will provide about 1,500-SF of Permeable Concrete Paving at pedestrian walking areas
on the southeast corner of the project.The permeable pavement will conform to KCSWDM BMP
C2.6 in Appendix C.
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COUGHLIN PORTER LUNDEEN 3 April 1%,2015 �
IL PRELIMINARY CONDITIONS
Core Requirements
This section will address the requirements set forth by the Core Requirements listed in Chapter 1 of
the 2009 King County Surface Water Design Manual(KCSWDM),as adopted by City of Renton.
1. Discharge at the Natural Location(1.2.1)-All storm runoff from the re-developed site areas will be directed to
the west side of the campus and mto existing campus storm draii�ge systems,for discharge to City conveyance
systems.
2. Off-Site Afiaiysis(1.2.2)-A Level l off-site analysis is discussed in the"Of f Site Analysi�'section of this report.
3. Flow Conirol(1.23)Peak Rate Runoff Control The site is in City of Renton mapped"Peak Rate Flow Control
Standard(E�dsting Conditions).The peak discttilrge rate off the site will ct�ange by about 0.01�PS in the 100-year
stom�;no flow mntrol measures are requirecl(under 0.1�fs change in the 100-year storm).No downstream
conditions have been identifieci that would require this site to mitigate beyond m;n;mum requirements.Storm
water BNIl'of Permeable Pavement will be provided on about 1,5(X�SF of replaced pedestrian pavements.Either
permeable Cancrete or Porous pre-cast pavers will be usecl.
4. Com�eyance System(1.24)-The water mllecteci off of the site will be mnveyed in minimum 6-inch pipes to the
e�cisting campus storm system,and then to]arger,e�5ting pipes in the public street.There are no apparent
conveyance issues with the e�dsting systems,and no siguficant change to the flow characteristics from the re-
developed site.
5. Erosio��/Sedirnentatirni Conirol Plan(1.2.5)-This project will install Gty approved temporary erosion and
sediment mntrol Best Management Practices(BMI''s)related to specific conditions on-site. This subject will be
addressed in the"Ten�orary Erosicm and Salinzent Control"section of this report.
6. Maintenance and Operation(1.2.6)-The proposed on-site storm drainage system will be owned,operated,and
maultained by Renton Technical College. A Maintenance and Operation Manual is included in Section XI of this
report.
7. Finaricial Guarantees and Liability(1.2�-The Owner and Contractor will obtain all necessary pernuts and
obtain required bonds prior to the begulning of construction
8. Water Qi�ality(1.2.8)-Less than 5,000-SF of new impervious pollution generating area will be developed as part
of this praject. Therefore,added water quality treatrnent will not be required for this project.Existing oil-waber
separators on-site will be kept and maintained as part of the site storm water collection and conveyarice system
Special Requirements
This section will address the requirements set forth by the Special Requirements listed in Chapter 1.3 �,
of the 2009 King County Surface Water Design Manual(KCSWDM)as adopted by City of Renton. II
1. Other Ado�ted Area Specific Requirements(13.1)-The project is not locabed in an area with special requirements. '
2. Flood hazard Delineation(1.3.2)-The project is not locatecl in a flood zone as mappecl by FF.MA.
COUGHLIN PORTER LUNDEEN 4 Apri117,2015 I'i
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3. Flood Protectio�i Facilities(13.3)-The project is not located in a flood zone as mapped by FEMA.
4. Source Conriols(1.3.4)-No sources of pollutants will be exposed on site as a result of this re-development.
5. Oil Crn:h�ol(1.3.5)-The Site is not a high-use site,and will not generabe mricentrations of oil.
6. Aqisifer Protection Area(1.3.6)-The site is in"StreamElow Source Area"as mapped by the Gty of Renton It is
not in an Aquifer Protection area.
COUGHLIN PORTER LUNDEEN 5 April 1i,201�
Off-site ara�lysis
Upstream Analysis
The area upstream of the site is a paved parking lot that drains to a private campus storm system
separate from Building K.Stormwater from the automotive complex and its surrounding site join
with other campus systems in Kirkland Ave,west of the campus. No significant water enters the
proposeci re-development site from off-site.The proposed development�vill not change this
condition.
Downstream Analysis
� The project site is located Hrithin the City's Lake Washington East Drainage Basin. Existing land
cover on the approximately 3.3-acre site is roof and pavement. A local system of pipes and small
drainage structures collects the storm water and routes it through college owned systems to the City
of Renton owned systems in Kirkland Avenue.The entire drainage path through and off the site is
roofed and paved surfaces or piped systems.No reported problems with the campus systems are
documented.
The point of connection to City storm systems is south and west of the project site.No work is
proposed on the City owned storm systems adjacent to campus.
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COUGHLIN PORTER LUNDEEN 6 Apri11%,2015
IIL SITE HYDROLOGY ANALYSIS AND DESIGN
Storm Runoff Conirol Analysis
The drainage system for the project site was designed in accordance�vith the 2009 King County
Surface Water Design Manual(KCS�NDM)as adopted by City of Renton. 'The peak runoff rates for I
the hydraulic design were determined using a continuous King Count}�'s KCRTS storm water 'I
design softcvare. I
Based on our analysis of the peak flows before and after the proposed development,no added flow '
control systems will be constructed for this site.The slight change in impervious surface��ill result '
in a negligible change in flow rates from the site.
Table 1: Pro osed Draina e Basin Areas
Land Cover Existing Area(Acres) Proposed Area
Acres
Im ervious Area ac 2.37 2.40
Pervious Area ac 0.9 0.87
Total Area ac 3.27 3.27 i,
Peak 100-year flow 1.19 1.20
rate CFS)
A change of 0.01-CFS in peak flow rates in the 100-year storm event is expected by this renovation. I
Based on the exception on page 1-34 of the City of Renton 2009 Surface Water Design Manual �,
Amendment,flow control measures are not required to be installed in the renovated site. I
Best Management Practices �
The perinanent BMPs in KCSWDM Appendix C�n�ere assessed for application to this site and I�i
project.Because the project is retaining most of the existing building and pavement azea,limited I
opportunities exist to emplo��the approved me�sures:
C2.1 Full Dispersion:Requires a 100-foot flow path,which is not available from this site.
C2.2 Full Infiltration:Sufficient space is not available to provide an infiltration area within this
project area of the campus.Existing underground utilities and buildings limit space available.
C2.3 Limited Infiltration:the project site area does not allow�for sufficient area of limited
infiltration.
C2.4 Basic Dispersion:insufficient space far dispersion,most of the site sits belo�v adjacent grades,
and there is not a logical place to disperse roofs and or pa��ements to adjacent vegetated areas,or
sufficient vegetated flow paths.
C2.5 Rain Garden:Campus progratn and space requirements don't allow for a rain garden that can
meaningfully collect from the adjacent roof or paved areas.
COUGHLIN PORTER LUNDEEN 7 April 1%,2015
C2.6 Permeable Pavement,as most of the pavements will be primarily for vehicles,and especially
vehicles being repaired,we want to collect water off these surfaces and run it through the treatment
systems prior to discharge to ground water or City storm systems.An approximately 1,500-SF area
in the southwest corner of the site,�vith pedestrian only paving�vill be paved in porous materials
(Concrete or pavers).
C2.7 Rainwater I-Iarvesting:insufficient space to store,and little need far har��ested rain�vater in
this project.
C2.8 Green Roof:The existing and new roofs are sloped too steeply for vegetated roof areas.
C2.9 Reduced Impervious Surface Credit:Not applicable for this site,
C2.10 Native Growth Retention Credit:No native growth in this site
C2.10 Perforated Pipe Connections:Limited use from the new building,�vould require significant
site disruption for re-working existing do�vnspouts from buildings to remain.
Water Quality Analysis
Less than 5,000-SF of new pollution generating impervious surface(PGIS)will be installed for the
renovated site.Per the City's Stormwater code,no added treatment is required.Existing oil-water
separators in the existing storm water conve}'ance system will be maintained and continue to
operate.The total exposed pollution generating surfaces in the complex will be reduced by about
2,000-SF over the existing condition by the larger footprint of the replaced building.
COUGHLIN PORTER LUNDEEN S April li,2015
Conveyance Analysis
The proposeci conveyance system consists of sheet flow off the paved and roofed surfaces.Water
from these surfaces is collected in trench drains,area drains and catch basins and piped to the
campus storm system.The piped campus system is connected to the City's system in Kirkland
Avenue.
Flows out of the revised site are expected to be no more than 0.01-cfs change in the 100-year storm.
Record systems downstream are steadily larger pipes,and should not notice this minor change in
peak flow rate.
COUGHLIN PORTER LUNDEEN 9 Aprilli,201�
IV. SPECIAL REPORTS AND STUDIES
No special reports have been prepared for this site renovation
V. BASIN AND COMMUNITY PLANNING AREAS
This site is not part of a special community or planning area
VI. OTHER PERMITS
No additional permits are required for the project.
VII. TEMPORARY EROSION AND SEDIMENT CONTROL
Note that although the total area of this project is over 3-acres,it occurs in a fully developed area,
covered with buildings and pavements.Most of the existing buildings and pavements will be
maintained in place.New construction and new pavement will be 1'united to less than 1-acre of
disturbed soil.
To minimize the amount of sediment laden water from leaving the site during the construction
process,a temporary erosion and sedimentation control(TESC)plan has been designed for this
project in accordance with the current KCSWDM as adopted by the City of Renton. T'he TESC plan
indicates the minimum necessary measures that the contractor shall implement during the
construction process. Best Management Practices(BMI''s)are defined as physical,structural and/or
managerial practices that,when used in combination will prevent or reduce pollution of water
caused by construction activities. The TESC plan for the proposed project has been designed to
protect off-site properties as�nrell as minimize the quantity of sediment-laden water from entering
the public storm system. The following BMP's will be included on the TESC plan for this project:
� To ensure that the disturbance of the site is limited to the development area,the clearing limits
will be clearly staked prior to any clearing or grading as shown on the TESC plan.
� Catch basin protection will be used on existing and newly installed catch basins to reduce
sediment-laden water from entering the existing storm system during construction.
� Cover measures such as mukh,seeding,or plastic sheeting will be implemented for disturbed
areas greater than 5,000 square feet in accordance with the City of Renton Standards.
❑ Perimeter measures such as silt fence or straw wattles will be used at the lower limit of the work
to contain and control sediment from leaving the work area.
❑ All construction debris will be promptl}'removed from the site to min;mize demolition and
constrvction impacts on the site. The contractor shall implement additional BMP's as required
and/or recommended by the City of Renton inspector ar other agencies as required to prevent
demolition and construction debris,waste material,fuel,oil,lubricants,and other fluids from
entering the public storm system.
COUGHLIN PORTER LUNDEEN 10 April 17,2015
i�
❑ Existing pavements will be maintained as construction work surfaces,and for site access.
Pavements will be swept as needed to keep them clean and prevent soils from being tracked
from the work site.
❑ The new building will be constructed on the foot print of the existing,neither building has deep
foundations,the excavation required can be achieved below the level of existing adjacent
paving,effectively contauung bare soils during construction.
--,
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COUGHLIN PORTER LUNDEEN 11 Apri117,2015 '�
I
i
VIII. BOND QUANTITY WORKSHEET I,
A Bond Quantity Worksheet is included in this submittal. �
IX. MAINTENANCE AND OPERATIONS MANUAL
Provided
X. STORMWATER BMP COVENANT
Draft Covenant Provided
COUGHLIN PORTER LUNDEEN 12 April 17,201�
Site Improvement Bond Quantity Worksheet
Original bond computations prepared by:
Nama: Ken Wiersema P.E. oate: 6/11/2015
PE Registration Number: 404;31 Ta���� 206-343-0460
F��m Neme: Couqhlin Porter Lundeen Renton Tech
Address: 8OO Zf1C� AVE�, th Floor, P�o�e�tNo: guildina K
Seattle, WA 98104
ROAD IMPROVEMENTS&DRAINAGE FACILITIES FINANCIAL GUARANTEE REQUIREMENTS
PERFORMANCE BOND`," PUBLIC ROAD&DRAINAGE
AMOUNT MAINTENANCE/DEFECT BOND',"
Stabilization/Erosion Sediment Control(ESC) (A) $ �24,653.64
Existing Right-of-Way Improvements (B) $No work in right of w )/
Future Public Road Improvements 8�Drainage Facilities (C) $No work in right of w y
Private Improvements (D) $ $8,394.13
Construction Bond`Amount (A+g+C+D) = TOTAL (T) $ $33,047.77 X 1.5 = $49,571.65
X 1.5 Minimum bond'amount is$1000.
�B+��X No work in ri ht o wa
Maintenance/Defect Bond'Total 0.20= $ - g y
NAME OF PERSON PREPARING BOND'REDUCTION: Date:
*NO7E: The word"bond"as used in this document means any financial guarantee acceptable to the City of Renton.
"NOTE:All prices include labor,equipment,materials,overhead and profit. Prices are from RS Means data adjusted for the Seattle area
or from local sources if not included in the RS Means database.
REQUIRED BOND'AMOUNTS ARE SUBJECT TO REVIEW AND MODIFICATION BY RDSD
Page 1 of 1 Unit prices updated:2/12/02
Version:4/22/02
REF 8-H BOND QUANTITY WORKSHEET.xIs Report Date: 1/19/2010
Site irnprovement Bond Quantity Worksheet
Unit #of
Reference# P�ice Unit Quantit A lications Cost
EROSION/SEDIMENT CONTR4 Number
Backfiil & com action-embankment ESC-1 $ 5.62 CY
Check darrs,4" minus rock ESG2 SWDM 5.4.6.3 g 67.51 Each
Crushed surfacin 1 1/4" minus ESC-3 WSDOT 9-0�.9 3 $ 85.45 CY
Ditchin ESC-4 $ 8.08 CY
Excava6on-buik ESC-5 $ 1.50 CY
Fence, sitt E5C-6 SWUM b.4.3.1 $ 1.3tf L-
Fence, Tem orar NGPE ESG-7 $ 1.38 L=
H droseedin ESC-8 SWDM 5.4.2.4 $ 0.59 SY
Jute Me�li E3C-9 SWDM 5.4.2.2 $ 1.45 SY
Mulch, b rand, straw, 3"dee ESC-10 SWDM 5.4.2.1 $ 2.01 SY
Mulch, b machine, straw, 2"cee ESC-11 SWDM 5.4.2.1 $ 0.53 SY
Pi in ,te orar , CPP,6" ESC-12 $ 10.?0 LF
P� in , tem orar , C�P,8" ESC-13 $ 16.10 LF
P� in , temporar , C�P, 12" ESC-14 $ 20.?0 LF
Ptastic coveri , 6mm thick, sandba ed ESC-15 SWDM 5.4.2.3 $ 2.30 SY
Ri Ra , machine laced; slo es ESC-16 �'VSDOT�13.1 2 $ 39.08 CY
Rock Cons�ruction Entrance, 50'x15'x1' ESC-17 SWDM 5 4 4 1 $ 1 464 34 Each 1 464.34
Rock Cons�ruction Entrance, 100'x15'x1' ESC-18 SWDM 5 4.4.1 $ 2,928.68 Ear.h
Sediment nd riser assembl ESC-19 SWDM 5.4.52 $ 1,949.38 Each
Sediment tra , 5' hi h berm ESC-20 S1NDM 5.4.5.1 $ 17.91 LF
Sed.tra 5'hi_h,ripra ed spiilw berm sedion ESC-21 SINDM 5.4.5.1 $ 68.54 LF
Seedin b hand ESC-22 S1NDM 5.4.2.4 $ 0.51 SY
SodCin , 1' dee ,level ro�nd ESC-23 S1NDM 5.4.2.5 $ 6.03 SY
Sodcin , 1' dee ,slo ed round ESC-24 SWDM 5.4.2.5 $ 7.45 SY
TESC Su ervisor ESC-25 $ '4.'S HR
V1�'ater truck. dust control ESC-26 SWDM 5.4.7 $ 97.'S HR
WRITE-IN-ITEMS *"" s e a 9
Sediment Control Tanks 1 000 Ea�n 1 1 ,
n et rotection 10 1 600
em Construction ence
ESC SUBTOTAL: $ $1$,96�.34
30°lo CONTINGENCY S�MOBILIZATION: $
ESC TOTAL: $
COLUMN: A
Page 2 of J
Une prces updated ��L`11/U1
versioi '221oz
REFSH c,�ND QUANTITY WORKSMEE".XLS Check out the DDES Web s�.., at �ivww.metrokc.qov/ddes Re{�cirt Dale: �,�.S/200�
Site Improvement Bond Quantity Worksheet
Existing Future Public Private Quantity Completed
Right-of-Way Road Improvements Improvements (Bond Reduction)*
8 Drainage Facilities Quant.
Unit Price Unit Quant. ost uant. Cost Quant. Cost Complete Cost
GENERALITEMS No.
Backfill&Compaction-embankment GI-1 $ 5.62 CY 0.00 0.00 0.00 0.00
Backfill&Compaction-trench GI-2 $ 8.53 CY 0.00 0.00
Clear/Remove Brush,by hand GI-3 $ 0.36 SY 0.00 0.00 0.00 0.00
Clearing/Grubbing/Tree Removal GI-4 $8,876.16 Acre 0.00 0.00 0.00 0.00
Excavation-bulk GI-5 $ 1.50 CY 0.00 0.00 0.00 0.00
_
Excavation-Trench GI-6 $ 4.06 CY 0.00 0.00
Fencing,cedar,6'high GI-7 $ 18.55 LF 0.00 0.00 0.00 0.00
Fencing,chain link,vinyl coated, 6'high GI-8 $ 13.44 LF 0.00 0.00 0.00 0.00
Fencing,chain link,gate,vinyl coated, 2 GI-9 $1,271.81 Each 0.00 0.00 0.00 0.00
Fencing,split rail,3'high GI-1 $ 12.12 LF 0.00 0.00 0.00 0.00
Fill&compact-common 6arrow GI-11 $ 22.57 CY 0.00 0.00 0.00 0.00
Fill&compact-gravel base GI-1 $ 25.48 CY 0.00 0.00 0.00 0.00
Fill&compact-screened topsoil GI-1 $ 37.85 CY 0.00 0.00 0.00 0.00
Gabion,12"deep,stone filled mesh GI-1 $ 54.31 SY 0.00 0.00 0.00 0.00
Gabion,18"deep,stone filled mesh GI-1 $ 74.85 SY 0.00 0.00 0.00 0.00
Gabion,36"deep,stone filled mesh GI-1 $ 132.48 SY 0.00 0.00 0.00 0.00
Grading,fine,by hand GI-1 $ 2.02 SY 0.00 0.00 0.00 0.00
Grading,fine,with grader GI-1 $ 0.95 SY 0.00 0.00 0.00 0.00
Monuments,3'long GI-1 $ 135.13 Each 0.00 0.00 0.00 0.00
Sensitive Areas Sign GI-2 $ 2.88 Each 0.00 0.00 0.00 0.00
Sodding, 1"deep,sloped ground GI-21 $ 7.46 SY 0.00 0.00 0.00 0.00
Surveying,line&grade GI-2 $ 788.26 Day 0.00 0.00 0.00 0.00
Surveying,lot location/lines GI-2 $1,556.64 Acre 0.00 0.00 0.00 0.00
Traffic control crew(2 flaggers) GI-2 $ 85.18 HR 0.00 0.00 0.00 0.00
Trail,4"chipped wood GI-2 $ 7.59 SY 0.00 0.00 0.00 0.00
Trail,4"crushed cinder GI-2 $ 8.33 SY 0.00 0.00 0.00 0.00
Trail,4°top course GI-2 $ 8.19 SY 0.00 0.00 0.00 0.00
Wall,retaining,concrete GI-2 $ 44.16 SF 0.00 0.00 0.00 0.00
a ,roc ery GI-2 9.49 SF 0.00 0.00 0.00 .00
Page 2 of 7 SUBTOTAL 0.00 0.00 �� 0.00
Unit prices updated:2/12/02
Version:4/22/02
REF 8-H BOND QUANTITY WORKSHEET.xIs Report Date: 1/19/2010
Site Improvement Bond Quantity Worksheet
Existing Future Public Private Bond Reduction'
Right-of-way Road Improvements Improvements
8�Drainage Facilities �uant.
Unit Price nit uant. ost uant. Cost Quant. ost Complete Cost
ROADIMPROVEMENT No.
AC Grinding,4'wide machine<1000sy RI-1 $ 23.00 SY 0.00 0.00 0.00 0.00
AC Grinding,4'wide machine 1000-2000 RI-2 $ 5.75 SY 0.00 0.00 0.00 0.00
AC Grinding,4'wide machine>2000sy RI-3 $ 1.38 SY 0.00 0.00 0.00 0.00
AC Removal/Disposal/Repair RI-4 $ 41.14 SY 0.00 0.00 0.00 0.00
Barricade,type I RI-5 $ 30.03 LF 0.00 0.00 0.00 0.00
Barricade,type III(Permanent) RI-6 $ 45.05 LF 0.00 0.00 0.00 0.00
Curb&Gutter,rolled RI-7 $ 13.27 LF 0.00 0.00 0.00 0.00
Curb&Gutter,vertical RI-8 $ 9.69 LF 0.00 0.0 3730.65 0.00
Curb and Gutter,demolition and disposal RI-9 $ 13.58 LF 0.00 0.00 2783.90 0.00
Curb,extruded asphalt RI-1 $ 2.44 LF 0.00 0.00 0.00 0.00
Curb,extruded concrete RI-11 $ 2.56 LF 0.00 0.00 0.00 0.00
Sawcut,asphalt,3"depth RI-1 $ 1.85 LF 0.00 0.00 1258.00 0.00
Sawcut,concrete,per 1"depth RI-1 $ 1.69 LF 0.00 0.00 0.00 0.00
Sealant,asphalt RI-14 $ 0.99 LF 0.00 0.00 0.00 0.00
Shoulder,AC, (see AC road unit price) RI-1 $ - SY 0.00 0.00 0.00 0.00
Shoulder,gravel,4"thick RI-1 $ 7.53 SY 0.00 0.00 0.00 0.00
Sidewalk,4"thick RI-1 $ 30.52 SY 0.00 0.00 7691.04 0.00
Sidewalk,4"thick,demolition and dispos RI-1 $ 27.73 SY 0.00 0.00 305.24 0.00
Sidewalk,5"thick RI-1 $ 34.94 SY 0.00 0.00 0.00 0.00
Sidewalk,5"thick,demolition and dispos RI-2 $ 34.65 SY 0.00 0.00 0.00 0.00
Sign,handicap RI-21 $ 85.28 Each 0.00 0.00 ,28 0.00
Striping,per stall RI-22 $ 5.82 Each 0.00 0.00 5 � 0.00
Striping,thermoplastic,(for crosswalk) RI-2 $ 2.38 SF 0.00 0.00 9603. o.00
Striping, re ectorize ine I- 4 0.25 0.00 0.0 63. o. o
Page 3 of 7 SUBTOTAL 0.00 0.00 � 0.00
Unit prices updated:2/12/02
Version:4/22/02
REF 8-H BOND QUANTITY WORKSHEET.xIs Report Date: 1/19/2010
{
Site Improvement Bond Quantity Worksheet
Existing Future Public Private Bond Reduction`
Right-of-way Road Improvements Improvements
8��rainage Facilities Quant.
nit rice Unit Quant. Cost uant. Cost Quant. Cost Complete Cost
R AD 4"R k=2.5ba e 1. " r = 1. "
For KCRS'93,(additional 2.5"base)add:RS-1 $ 3.60 SY 0.00 0.00 0.00 0.00
AC Overlay,1.5'AC RS-2 $ 7.39 SY 0.00 0.00 O.DO 0.00
AC Overlay,2"AC RS-3 $ 8.75 SY 0.00 0.00 0.00
AC Road,2",4"rock,First 2500 SY RS-4 $ 17.24 SY 0.00 0.00 0.00 0.00
AC Road,2",4"rock,Qty.over 2500SY RS-5 $ 13.36 SY 0.00 0.00 0.00 0.00
AC Road,3",4"rock,First 2500 SY RS-6 $ 19.69 SY 0.00 0.00 0.00 0.00
AC Road,3",4"rock,Qty.over 2500 SY RS-7 $ 15.81 SY 0.00 0.00 0.00 0.00
AC Road,5",First 2500 SY RS-8 $ 14.57 SY 0.00 0.00 0.00 0.00
AC Road,5",Qty.Over 2500 SY RS-9 $ 13.94 SY 0.00 O.DO 0.00 0.00
AC Road,6",First 2500 SY S-1 $ 16.76 SY 0.00 0.00 0.00 0.00
AC Road,6",Qty.Over 2500 SY S-1 $ 16.12 SY 0.00 0.00 0.00 0.00
Asphalt Treated Base,4"thick S-1 $ 9.21 SY 0.00 0.00 0.00 0.00
Gravel Road,4"rock,First 2500 SY S-1 $ 11.41 SY 0.00 0.00 0.00 0.00
Gravel Road,4"rock,Qty.over 2500 SY S-1 $ 7.53 SY D.00 0.00 0.00 0.00
PCC Road,5",no base,over 2500 SY S-1 $ 21.51 SY 0.00 0.00 0.00 0.00
PCC Road, 6",no base,over 2500 SY S-1 $ 21.87 SY 0.00 0.00 0.00 0.00
Thickened Edge -1 . 0.00 0.00 0.00
Page 4 of 7 SUBTOTAL 0.00 0.00 � 0.00
Unit prices updated:2/12/02
Version:4/22/02
REF 8-H BOND QUANTITY WORKSHEET.xIs Report Date: 1/19/2010
I
Site Improvement Bond Quantity Worksheet
Existing Future Public Private Bond Reduction•
Right-of-way Road Improvements Improvements
&Drainage Facilities Quant.
nit rice nit Quant. Cost Quant. Cost uant. ost Complete Cost
DRAINA E PP= 1 iv I n For Culvert prices, Average of 4'cover was assumed.Assume perforeted PVC is same price as solid pipe.
Access Road,R/D D-1 $ 16.74 SY 0.00 0.00 0.00 0.00
Bollards-fixed D-2 $ 240.74 Each 0.00 0.00 0.00 0.00
Bollards-removable D-3 $ 452.34 Each 0.00 0.00 0.00 0.00
*(CBs include frame and lid)
CB Type I D-4 $1,257.64 Each 0.00 0.00 251528 0.00
CB Type IL D-5 $1,433.59 Each 0.00 0.00 0.00 0.00
CB Type II,48"diameter D-6 $2,033.57 Each 0.00 0.00 0.00 0.00
for additional depth over 4' D-7 $ 436.52 FT 0.00 0.00 0.00 0.00
CB Type II,54"diameter D-8 $2,192.54 Each 0.00 0.00 0.00 0.00
for additional depth over 4' D-9 $ 486.53 FT 0.00 0.00 0.00 0.00
CB Type II,60"diameter D-10 $2,351.52 Each 0.00 0.00 0.00 0.00
for additional depth over 4' D-11 $ 536.54 FT 0.00 0.00 0.00 0.00
CB Type II,72"diameter D-12 $3,212.64 Each 0.00 0.00 0.00 0.00
for additional depth over 4' D-13 $ 692.21 FT 0.00 0.00 0.00 0.00
Through-curb Inlet Framework(Add) D-14 $ 366.09 Each 0.00 0.00 0.00 0.00
Cleanout,PVC,4" D-15 $ 130.55 Each 0.00 0.00 0.00 0.00
Cleanout,PVC,6" D-16 $ 174.90 Each 0.00 0.00 0.00 0.00
Cleanout,PVC,8" D-17 $ 224.19 Each 0.00 0.00 0.00 0.00
Culvert,PVC,4" D-18 $ 8.64 LF 0.00 0.00 0.00 0.00
Culvert,PVC,6" D-19 $ 12.60 LF 0.00 0.00 2368.80 0.00
Culvert,PVC, S" D-20 $ 13.33 LF 0.00 0.00 1572.94 0.00
Culvert,PVC,12" D-21 $ 21.77 LF 0.00 0.00 0.00 0.00
Culvert,CMP,8" D-22 $ 17.25 LF 0.00 0.00 0.00 0.00
Culvert,CMP,12" D-23 $ 26.45 LF 0.00 0.00 0.00 0.00
Culvert,CMP,15" D-24 $ 32.73 LF 0.00 0.00 0.00 0.00
Culvert,CMP,18" D-25 $ 37.74 LF 0.00 0.00 0.00 0.00
Culvert,CMP,24" D-26 $ 53.33 LF 0.00 0.00 0.00 0.00
Culvert,CMP,30" D-27 $ 71.45 LF 0.00 0.00 0.00 0.00
Culvert,CMP,36" D-28 $ 112.11 LF 0.00 0.00 0.00 0.00
Culvert,CMP,48" D-29 $ 140.83 LF 0.00 0.00 0.00 0.00
Culvert,CMP,60" D-30 $ 235.45 LF 0.00 0.00 0.00 0.00
ulvert, - 1 0.
Page 5 of 7 SUBTOTAL o.00 o.o0 6,457.02 0.00
Storm water
improvements/replacement updated:2/12/02
Version:4/22/02
REF 8-H BOND QUANTITY WORKSHEET.xIs Report Date: 1/19/2010
Site Improvement Bond Quantity Worksheet
Existing Future Public Private Bond Reduction'
Right-of-way Road Improvements Improvements
DRAINAGE CONTINUED &Drainage Facilities Quant.
o. Unit Price Unit Quant. ost uant. Cost Quant. Cost Complete Cost
Culvert,Concrete,8" -32 21.02 LF 0 0 0 0
Culvert,Concrete,12" D-33 $ 30.05 LF 0 0 0 0
Culvert,Concrete,15" D-34 $ 37.34 LF 0 0 D 0
Culvert,Concrete,18" D-35 $ 44.51 LF 0 0 0 0
Culvert,Concrete,24" D-36 $ 61.07 LF 0 0 0 0
Culvert,Concrete,30" D-37 $ 104.18 LF 0 0 0 0
Culvert,Concrete,36" D-38 $ 137.63 LF 0 0 0 0
Culvert,Concrete,42" D-39 $ 158.42 LF 0 0 0 0
Culvert,Concrete,48" D-40 $ 175.94 LF 0 0 0 0
Culvert,CPP,6" D-41 $ 10.70 LF 0 0 0 0
Culvert,CPP,8" D-42 $ 16.10 LF 0 0 0 0
Culvert,CPP,12" D-43 $ 20.70 LF 0 0 0 0
Culvert,CPP,15" D-44 $ 23.00 LF 0 0 0 0
Culvert,CPP, 18" D-45 $ 27.60 LF 0 0 0 0
Culvert,CPP,24" D-46 $ 36.80 LF 0 0 0 0
Culvert,CPP,30" D-47 $ 48.30 LF 0 0 0 0
Culvert,CPP,36" D-48 $ 55.20 LF 0 0 0 0
Ditching D-49 $ 8.08 CY 0 0 0 0
Flow Dispersal Trench (1,436 base+) D-50 $ 25.99 LF
French Drain (3'deplh) D-51 $ 22.60 LF 0 0 0 0
Geotextile,laid in trench,polypropylene D-52 $ 2.40 SY 0 0 0 0
Infiltration pond testing D-53 $ 74J5 HR 0 0 0 0
Mid-tank Access Riser,48"dia, 6'deep D-54 $1,605.40 Each 0 0 0 0
Pond Overflow Spillway D-55 $ 14.01 SY 0 0 0 0
Restrictor/Oil Separator, 12" D-56 $1,045.19 Each 0 0 0 0
RestrictorlOil Separator, 15" D-57 $1,095.56 Each 0 0 0 0
Restrictor/Oil Separator,18" D-58 $1,146.16 Each 0 0 0 0
Riprap,placed D-59 $ 39.08 CY 0 0 0 0
Tank End Reducer(36"diameter) D-60 $1,000.50 Each 0 0 0 0
Trash Rack, 12" D-61 $ 211.97 Each 0 0 0 0
Trash Rack, 15" D-62 $ 237.27 Each 0 0 0 0
Trash Rack, 18" D-63 $ 268.89 Each 0 0 0 0
Trash Rack,21" - ach 0 0 0 0
Page 6 of 7 SUBTOTAL 0 0 0 0
Unit prices updated:2/12/02
Version:4/22/02
REF 8-H BOND QUANTITY WORKSHEET.xIs Report Date: 1/19/2010 I
- �� � . � - �- - �� �� �� -- - - �
Site improvement Bond Quantity Worksheet
Existing Future Pubiic Private Bond Reduction'
Right-of-way Road Improvements Improvements
&Drainage Facilities Quant.
Unit rice nit Quant. Price uant. ost uant. Cost Complete Cost
PARKIN LOT SURFACING
No.
2"AC,2"top course rock&4"borrow Pl-1 $ 15.84 SY 0 0 0 0
2"AC, 1.5" top course&2.5"base cou PL-2 $ 17.24 SY 0 0 0 0
4"select borrow PL-3 $ 4.55 SY 0 0 0 0
1.5"top course rock 8 2.5"base course PL-4 $ 11.41 SY 0 0 0 0
WRITE-IN-ITEMS
(Such as detention/water quality vaults.) No.
WI-1 Each 0 0.00 0.00 0.00
W I-2 SY 0 0.00 0.00 0.00
W I-3 CY 0 0.00 0.00 0.00
W I-4 LF 0 0.00 0.00 0.00
W I-5 FT 0 0.00 0.00 0.00
W I-6 0 0.00 0.00 0.00
wi-� o o.00 o.00 o.00
wi-a o o.00 o.00 o.00
wi-s o o.00 o.00 o.00
w�-,o o.00 o.00 o.00
SUBTOTAL 0.00 0.00 0.00 0.00
SUBTOTAL(SUM ALL PAGES): 0.00 0.00 �6,457.02 0.00
30%CONTINGENCY 8 MOBILIZATION: 0.00 0.00 $��937•1� 0.00
GRANDTOTAL: 0.00 0.00 �8,394.13 0.00
COLUMN: B C D E
Page 7 of 7
Unit prices updated:2/12/02
Version:4/22/02
REF 8-H BOND QUANTITY WORKSHEET.xis Report Date: 1/19/2010 ,
,\PPL\DI\ '� `�1�11�"fL1�ANCC RLQUIRC�fL•nTS FLU�� CONTftOL,CONV[l':\\CL.:�NU 1t'Q FACIUTiLS
NO.5-CATCH BASINS
Maintenance Defect or Problem Conditions When Maintenance is Needed Results Expected When
Compo�ent Maintenance is performed
General Trash&Cebris Trash or deEris of rnore than%z cubic foot which No Trash or debis I�cated
(IncluCes 5etlimenq ' is located immediately in front oi IF►e catch basin immediataly n front of qtch basin
opening or is blocking cepacity of the basin by opening.
more than 10%.
TrasF or debris;in Ihe bas n)that exceed�'�3 the No trash or debrs in the ca;ch
depth froT the bottom of trasin to invert 1he basin.
Io�Nest pipe i�to or out o(the basin.
I Trash or detxis in any i�let or ouUet ppe blocking Inlet�nd oudet pipes iree o(trash or
more tha�'!3 of its�eight. debns.
Dead ani�nals or vegeta6on that cauld generate No dead animals or vegstalion
odors that could cause conplaints or dangerous present within th?catch basin.
gases(e.g.,�nemane).
Deposits of gartage ez�eeding 1 cubic foot n No condi6on presen which would
volume. atvact or suppoR the breed�ng of
insects o�rodents.
Structure Damage to Comer ol trame extends more than'/.Inch past Frame is sven with curb.
Frame and/or To� c�rb hace into the stree:(If applicable).
Slab
Top slab has hdes larger than 2 square inches Top slab is irne ot holes and cracks.
or cracks wider than Y.inch(intent is to make
s�re all material is running into basin).
F2me not sitUng flush on top slab,i.e., Frame is>itting Ilush on top slab.
separation of more:han'/,inch of the frame from
ths top slab.
Cracks in Basin Cracks wider than n inch and longer than 3'eet, Basin rep aced or repaired to desicn
WaIIs/Bottom any evidence of soil particles enterins ca:ch standards.
basi�Uirouyh cracks,or niainlenance�son
judges that structure is unsound.
Cracks wider than'h inch and longer than 1 foot Nc cracks more:han'/4 inc�w de at
at the joint o1 any inlet/outlet ppe or any the joint of inl�t/outlPt pipe
evidence of soil particles entering catch basin
through aacks.
Settlement/ Basin has settled more than 1 inch or has ro:ated Basin replaced or repaired b desicn
Misalignment more than 2 inches out of alignment. standards.
Fre Hazard Presence of chemicals such as natural gas,oil Ne flammable chemcals present.
aed gasdine.
Vegetation Vegetation g•owing across and blocking mors No vegetation blocking opening to ,
than 10%of the basin cpening basin.
VegetaUon grow ng in inleVoutlet pipe joints that No vegetaGon or root growth
is more than 6 inches tall and less than 6 inches present.
apert.
Polution NonflammaWe chemicals cf more than %cuDic No poilution present other than
foot per three feet of basin length. surface film.
Catch Basin Cover Cover Not in Place Cover is missing or oMy partially in place.Arry Catch basm cover�s closed
open;atch basin requires maintenance.
Lockmg Mechanism Mechanism cannot be opened by on Mechanism opens w►th proFer tools.
Not Working maintenance perJon with proper tools.Bo1M,nto
frame have Iess than%:inch of thread.
Cover Difficult to One maintenance person canrot remove lid after Cover car be remwed by one
Remove applying 80 Ibs.of lift;intent is keep caver from maintenance person.
sealing otf access to maintenance.
Ladder Ladder Rungs Unsafs Ladder is unsafe du�to missing n;ngs, Ladder meets design standards and
misalignment,rust,cracks,or sharp edges. allows mainfena�ce person safe
access.
U24/2005 '_005 Surface�yatc�Dcsip�Manual A�pcndiz.1
A-b
APPENDIX A MAINT[N��NC[ RGQUiRC�1C•NTS hUK hLUH'C�UNI KUL,l'UNVL•YANCL AND�VQ FACILITi[S
NO. 5-CATCH BASINS
Maintenance Defector Problem Conditions When Maintenance is Needed Resuits Expected When I
Componont Maintenance is perf�rmed
Metal Grates Unsafe Cxate Grate wilh apesniny wide�than'/e inch. Grate opening meets design
(If Appicable) Openinp standa�ds.
Trash and Clebris Trash and debris that is blocking rrore than 20% Grate fres of tash and debris.
of grate surface.
Darnaged or Missing. Grate missing or broKen member(s)of the Qrate. Grate is in place and meets desgn
standards.
— I
I
I
I
�
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;
NO. 10-CONVEYANCE PIPES AND DITCHES
Maintenance Defect or Problem Conditions When Maintenance is Needed Results Expeeted YVhen
Component Maintenance is Performed
Pipes Sediment&Debris Accumulated sediment that exceecs 20%of the Pipe cleanecf of al seiimPnt an�
diameter cf the pipe. deb�s.
Vegetat on Vegetatior that reduces free movement o(water All��egetatbn removed so water
through pipes. Ilows ireely through pipes.
�arnaged Protective co2ting is damaged;rust is causing Pipe repaired or replaced.
more than 50ao deterioration to any part of pipe.
Any dent that decreases the cross secfion area Pipe repaired or replaced.
of pipe by more than 20°b.
��pen Ditches Trash&Debris Trash and debris exceeds 1 cubic foot per 1,000 Trash and debris cleared from
square feet of ditch and sloFes. ditches.
Sediment Accumulated sediment that axceeds 20%of the Ditc�clea�ed/`lushed of all
design depth. sedment and deb�s so that it
matches dcsigi.
Veyelation YeSet�lon that reduces Yee movemerx of water Water Lows treely through dilches.
thrcugh ditches.
Erosion Damage to See'Detention Ponds"Table Nu. 1 See'Detentlon Pcncls'Table No. 1
Sbpes
Rock Lining O�t of 1Aaintenance person:;an see native saI beneath Repface rucks lu desiyn slen�ards.
Ptace or Missing(N :he rock lining.
Appicable).
=005 Surface Water DesiLn vlanual -,1p�encix 11 1/24/2�S
A-9
i
:1PPf?til)I\.� �4AIVTP.NAVCki RI•:(1UIKI�.�iF;NI S FLOW C'ON IROI..CONVf:I'�WCP..Atif) ��Q FACILI fI1:S
NO. 22-BAFFLE OILNVATER SEPARATOR '
MaFntenance Defect Conditlon When Maintenance b Needad Rasults Expected Whan
ComponeM Maintenaue Is Periomwd
Site Trash and debris My Vash or debris which impairs the fundlon o( Trash and debris removed hom �
lhe facility. faciNry.
Cantaminants�d Fbating ad in excess of 1 inch in first chamber, No conWminanls preser�l other than ,
potluGon any oil in other chambers or other coMaminants a suAace o�61m.
of arry type�any chamber. ,
� Vault Treatment Sedimer�t Sediment accumulates exceeds 6 inches in the No sediment in the vautt.
� Area acc�mulation vautt.
Discharge water not Inspedion of discharge water sFwws obvious Eflluent discharge is Gear.
dear signs of poor water quality-efBuent discharge
from vault shows thidc visib�sheen.
Trash or debris My trash and debris accumulatron in vault VauR is dear o(trash and debris.
accumulation (floalables and non-floatables).
Oil accumulati� Oii accumulations that exceed 1 inch,at the No vls�le dl depth on water.
wrface ot the water in the al/water separator
chamber.
Vautt Shuc:ture Damage lo Wall, Cracks wider than 54-inch or evidence of so� Vauft replaced or repaired to design
Frame,Bottom,and/or particles ernering the sUucture through the specificaUons.
Top Slab cracks,or maintenanc�nspeciion personnel
determines that the vault is not stnx�uratly
sound.
Baffles damaged Baflles corroding,cracking,warping andlor Repair or replace baHles to
showing signs of failure as determined by specifications.
maintenance inspedion personnel.
Gravity Drain Inoperable valve Valve wip not open and dose. Valve opens and doses normalhr.
Valve won't seai Valve does not seal completely. Valve complelely seals cbsed.
InIeUOuGet Pipe Sediment Sedirr�nt fiUing 2096 or more of the pipe. IrdeUoutlet pipes dear oi sediment.
axumulation
Trash and debris Trash and debris accumulated in inleVoutlet No trash or debris in pipes.
pipes(indudes floatables and rwn-floaWbles).
Damaged Cracks wider than%rinch at the jouit of the No aacks more than Y.-inch wide al
inleNoutlet pipes or arry evidence ot sal entering the jarrt ot the inleVoudet pipe.
at the joints of the inleUoutlet pipes.
Access Manhde CoverAid not in place CoverAid is missing or only partially in place. Manhole access covered.
Any open manhole requires Immediate
mafntenance.
Lodcing mechanism Mechanism cannot be opened by one AAechaNsm opens with proper tools.
not wo�lcing maintenance person with proper lools.Botts
cannW be seated. Seli-locking cover/lid does
not work.
Coverllid diff�ull to One maintenance person cannW remove CoverAid can be removed and
remove coveMid after applying 80 Ibs of IiR. reinstalled by one mairrtenance
person.
Ladder rungs unsate Missing rungs,misalignment,nut,or cracks. Ladder meets design standards.
Allows maiMenance pefson safe
access.
Large access Dart►aged or difiadt Large access doors or plates cannot be Replace or repair access door so it
doorslplate to open openedlremoved using normal equipment. can opened as designed.
Gaps,dcesnl cover Large access doors not flat and/or access Doors dose flat and wver access
cornpletely opening not comptetely covered. operung canpletely.
Lifting Rir►gs missing, Lifting rings not capable of IlPong weigM of door lifting rings sutficierrt to ifl a
rusted w covedkd. remove coverAid.
1/9/2009 2009 Surfacx Water Design Manual-Appendix A
A-32
�1PPCNUIXi\ �1nINT[1:lvCERGl�U1KG�IGN1ShJlthLU�� IU�IkUL.lUN4LY�1N('L.AND\1'�� FACILITIL�
N0. 10-CONVEYANCE PIPES AND D(TCHES
Maintenance Defect or Problem Conditions When Maintenance is Needed Results Expected When
Component Maintenance is Performed
Pipes Sediment&Debis Accu�ulated sediment that exceeds 20°,�ot the Pipe cleaned of alI sediment and
diameter o(1he pipe. debris.
Vegetation Vegetation that reduces free novement of Nater All vegetation re�noved�water
, through pipes. (lows freely through pipes.
Darnaged Protective coating is damagec;nat is causing Pipe repaired or replaced.
more than 509�deterioration to any part�f pipe.
i Any dent that decreases the aoss section area Pipe repaired or replaced.
of pipe by m�re than 20°k.
Open Oitches Trash 8 Cebris Trash and debris exceeds 1 cubic foot per 1 000 Trash and debris cleared from
square feet of ditch and slopes. ditches.
Sediment Accumulated sedirrent that exceeds 20°ro o(the Ditch cleanedfflushed of all
design depth. sediment and debris so that it
matches des yn.
Vegetation Vegetation that reduces free movement of water Water flows free:y through ditches.
th•ough ditches.
Erosion Damage to See"Detantron Ponds"Table No.1 See"Detention Ponds"Tab e�o. 1
Slopes
Rock Lming Uut of Maintenance pe�son can see native 9oit beneath Replace rocks te design st2ndards.
Plxe or A1is,ing(If tha rock ining. �
Ap�licable). I
N0. 11 -GROUNDS(LANDSCAPING)
MainEenance DeFect or Problem Conditions When Maintenance fs Needed Results Expected When
Gomponent Maintenance is Performed
General Weeds Weeds growFig in more than 209'0 of the Weeds present in less than 5%of
(Nonpoisanous,not landscaped area(irees anc shrubs orly). the landscaped area
noxious)
Sa`ety Hazard Ary presence ot poison ivy or other poisono�s No poisonous vegetation present in
vegeWtion. landscapod e�ea.
Trash or lJner Paper,cans,boules,totaGng more than 1 cuac Area dear ot'itte•.
foot within a IanCscaped area(trees a�d shrubs
only)of 1,000 squars feet.
Trees and Shrubs Damaged Limbs or parts ol trees or shrubs that 3re splk or Trees and shrubs with Icss Iher 5°,G
broken which affect more than 25°',�ol the total of rotal foliage with split or b�oken
fdiage of the tree or shrub. limbs.
Trees or shrubs that have been bloNm down or Tree o•shrub in plac�free cf injury
knocked over.
Trees or shrubs which are not adequately Tree or shrub in plac�and
supported or are leaning over,:ausing e�osure adequately supported;remove any
of:he rcx,�.s. dead or dlseased trees.
=00� Surf:�_c�1'at_r Dcsign�tanua.- :�pFcncix,� I/24�?COi
A-9
At'I'L•NUI�i A N1nIN I ENnNC[R[QUIREML-Nl'S FOR FLOVI�'CONTROL.CONVEYANCL AND�vQ FnCIL(TIL•S
NO. 5-CATCH BASINS
Maintenance Defect or Probiem Conditions When Maintenance is Needed Results Expected When
Component Maintenance is performed
Metal Grates Ursaf2 C�ate CYate wilh opering wider than�!w inch. Grate openirfl meets desiyn
(11 AppliqWe) Ope�ing standards.
Trash and Debris Trash and debris that is blocking more than 20% Grate free of trash and debris.
of grate surface.
Dama�ed or Missing. Grate missing or broken memberls)of the grate. Grate is in place and meets desigr
standards.
NO.6-DEBRIS BARRIERS (E.G.,TRASH RACKS)
Maintenance Defect or Problem Condttion When Malntertance is Needed Results Expected When
Component MainWnance is Pcrformcd.
General Trash and Debris Trash or debrls that is plugging mwe than 20�0 8amer clear to receNe capacity
of the opanings in the bamer. flaw.
Mzlal DamagedlMissing Bars are bent out of shape more thar 3 i�ches. Bars m place�nntn no bends more
Bars. than'l.inch.
� Bars are missing or endre oartle��nissing. Bars i�place accorcing to desfgn.
I
Bars are�oose and rusl is causing 5096 Repair or replace barrier to design '
'� detenora:ion to any part ot bartter. standards.
NO.7-ENERGY DfSSIPATERS
Maintenance Defect or Problem Conditions When Maintenance is NaodQd Rosuks Expactad Whon
Component Maintenance is Performed.
Extemal:
Rock Pad Missin�or Moved Only one layer af rock exis:s above native soil in Replace rocks to design stand2rds
Rock area five sq�are feet or larger,or any exposure
oi native soll.
Dispersian Trench Pipe Plugged witn Accumulated sediment that exceeds 2096 of the Pipe deaned�Ylushed so that it
Sejiment desiy,depui. matches desgn.
Not Dischargng Visual evidence of water discharging al Trench must be redesigned or
Water Prcperly ccncxntratec{xints along trench(nom►al rebullt to standards.
ccndi-ion is a"shee�floyJ'of water ak�g trerch)
In�ent is to prevent erosion damage.
Perfnrations Plu,�ed Over%,of perforations in p pe are plugged with Clean or replace pe�foratec pipe.
debris and sediment.
Water Flo�+vs Out Top Maintanance�rson�hseries water 1lownng out Fa�ility must�e rebuift or
of'Distributor Catch d�ring any storm Iess than the design stcrm or redesigned te standards.
Basin. its causing or appears likely to cause danage.
Re�eiving Area Over- Water in receiving area is causing or has No danger of landslides.
5aturated pcten6al of causing landslide problems.
Intemal:
Manhole/Chamber Wom or Damaged Strudure dissipating flow dete►iorates to%:or Replace structure to design
Post. Baffles,Side o� original s¢e or any wncentrated worr spot standards.
Chamber ex�eediny one square foot whi�h would make
strucUre unsound.
'00�Surfxc Watcr Design Ma�ual—Appendix A 1/24/200�
A-7
'r t
�-----'�'`�''Stii�.�r(�����;'_
RECORDING REQUESTBD BY AND
WNEN RECORDCD MAIL TO:
C1TY CLERK'S OFFICE
CITY OF R�NTON
1055 SOUTH GRADY WAY
REI��'I'ON, WA 98057
DECLARATION OF COVENANT
F4R MAINTENANCE AND INSPECTION OF FLOW CONTROL BMPS
Grantor:State Board for Community and Technica[ Coi(eges
Grantee:City of Renton
Legal Description:
Additional Legal(s)on:
Assessor's Tax Parcel ID#: 722780Q475 & 7227800425
1N CONSlDERATION of the approved City of Renton(checf:one of the following}❑ residei�tial
building permit,� commercial building permit, O clearing and grading permit,O subdivision permit, or
O short subdivision permit for Application File No. LUA/SWP relating to the
real property("Propei�ty")described above,the Grantor(s),the owner(s}in fee of that Property,hereby
_ —�
covenants(covenant)with City or Renton,a political subdivision of the state of Washington,that
helshe(they)will obsen+e,consent to,and abide by the conditions and obligations set forth and described ��
in Paragraphs 1 through 8 below with regard to the Property. Grantor(s)hereby grants(grant), ��,
covenants(covenant),and agrees(agree)as follows:
1. Grantor(s)or his/her(their)successors in interest and assigns("Owners")shall retain,upliold,
and protect the stormwater mana�ement devices, features,patlzways,limits,and restrictians,known as
flow control best management practices("BMPs"),shown on the approved Flow Control B�vIP Site Plan
for the Property attached hereto and incorporated lterein as Exl�ibit A.
2. The OHners shall at their own cost,operate,maintain,and keep in good repair,the Property's
BMPs as described in the approved Design and Maintenance Details for eacl� [iMP attacl�ed hereto and
incorporated herein as�xt�ibit B.
3. City or Renton shall provide at least 30 days written notice to the Owners that entry on the
Property is pianned for tlie inspection of the BMPs. After tl�e 30 days,the Owners shall allow the City of
Renton to enter for tlle sole purpose of inspecting the BMPs. {n lieu of inspectian by the City,tlie
Owiiers may elect to engage a licensed civil engineer registered in the state of Washington who has
expertise in drainage fo inspect the BMPs and provide a written report describing their condition. If the
engineer option is chosen,fhe Owners shall provide written notice to the City of Renton within fifteen
days of receiving the Ciry's notice of inspection. Within 30 days of giving this notice,the Owners,or the
engineer on behalf of the Owners,shall provide the engineer's repoirt to the City of Renton. If the report
is not provided in a timely manner as specified above,the County may inspect the BMPs witllout further
notice.
4, If the City detennines from its inspection,or from an engineer's repoit provided in accordance ',
with Paragraph 3,that maintenance,repair,restoration,and/or mitigation work is►•equined for the BMPs,
The City shall notify the Owners of the specific maintenance,repair,restoratian,and/or mitigation wor[c
(Work)required under RMC 4-6-030. The City shall also set a reasonable deadline for completing the �,I
Work or providing an engineer's report that verifies completion orthe Work. After fhe deadline has '
passed,the Owners shali allow the City access to re-inspect the BMPs unless an engineer's report has
been provided verifying completion of the Work. lf fhe work is not compleied properly witl�in the time
frame set by the City,the City may initiate a��enforcement action. Failure to properly maintain the BMPs
is a violation af R�tC 4-b-030 and may subject the Owners to enfarcement under the RMC I-3, inciuding
fines and penalties,
5. Apart fi•om perfo�ming routine ]andscape maintenance,tl�e Owners are hereby required ta
obtain written approval from the City or Renton before performing any alterations or modifcations lo the
BMPs.
b. Any notice or appraval required to be given by one party to the otlzer under the provisions of
this Declaration of Covenant shall he effective upon personal delivery to tlle otl�er party,or after three(3}
days from the date that the notice or approval is mailed with delivery confirmation to tl�e current address
on record with eacl�Party. TIZe parties silall notify each otliei•of any change to their addresses.
7. Tilis DecIaration of Covena�it is intended to promote the efficient and effective management of
surface water drainage on the Property,and it shall inure to the benetit of all t1�e citizens of the City of
Renton and its successors a�id assigns. This Decla�•ation of Covenant shall rEin with the land and he
binding upon Grantor(s),and Grantar's(s')successors in interest and assigns.
8. This Declaration of Covenant may be tenninated by execution of a written agreement by the
Owners and tlie City of Renton that is recorded by King County in its reaf property records.
� ,
i- i � � -
1N WITNESS WHEREOF,this Declaration of Covenant for the Maintenance and Inspection of
Plow Control BMPs is executed this ����day of �a� , 20 1�7 .
��
GRANTOR,ow er of the Property
Marty Brown, Executive Director
Sfate Board far Community and Technical Calleges
4n Behalf af Renton Technicat Callege
STATE OF WASHINGTON }
COUNTY�F K1NG )ss. '
On this day personally appeared before me:
���� �J rO W� ,to me known to be the individual(s)described in
and who execu d the within and foregoing instrurnent and acknowled�ed that tlley signed the same as
their free and voluntary act and deed,for the uses and purposes tl�erein stated.
� Given under my huld and official seal this ��day of �Gt ,20 �r'J .
�
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^�` •( `���������„���R�''•.. Notary Public in and for the State of Was�ington,
', _`��',`��ya�a�Fj'a, 02` residing at
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�� , 21� RENTON qEMp�yyl�M�NGTON
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AfPGNDIX i1 Mnit�'TGKANCG RGQI'IRL•UL•�TS FLO\1':ONTROL,CON���l"�tNC'C.AKI�\�'Q fACILITt[S
NO.5-CATCH BASINS EXHIBIT B
NairKenance Defect or Problem CondiHons When Mainhoance is Needed Resutts Ezpected When '
Component Maintenance is performed
General Trash&Debris Trash or debris of mae than:4 cibic(oot whidi No Trash or debris bcated
(Includes Seaimerq is located imnetl�ate7 in tont oi tne catch basn immec�ately in lrwii ot catdi basin
apening or is blodcing raFacitj ot the basin hy rxr.nirr�
more than 10�.
Trash or debns(in lhe basin)�at�xceeds'h t�e No Vash or debris�the calch
depth trom t�s bottar ot basin to rrvet the hasin.
kiwect pipe intn�-a�t of t�e t�sin
Traeh or dabris in any inlot or�utlet pipe bbckng Irdct and wtict pipcs 6cc o`hosh o-
mae than'/3 of it;heght. debris.
Dead animal:or veqetaticn that could genzrate No dead animals or vec�lation
odors that could rause coTplaints or dangerous presert wiCiin�he catch basin.
geses(e.g..methane�.
Deposfts�f garbage exceeding 1 cublc ioa In No contlluon prese�t whtch wouki
v�lume. attract or�pport the breednp of
if15@C�s Of fOdEfltS.
Struaure Damage to Corner of frane extends mwe than�.i�ch past Frame is even with curb.
F2me and/w Top c�rb tace into the strest(If applicable).
Slab
Top slab has holes larger thar 2 s•auare inche� Top slab is free o(hdes and aadcs
a cr:cks wider than:i�ch(intQnt is to maka
sure all matenal is rurninc into basin).
Fram�noc siding�ush on top slab i.e., j Frame is s tting flush on top slab.
separation of more ttw�'/.inci o(the frame from '
the tc�p slab.
Cracka i�3asin Cracks wider lhan i4 inch and bncer than�(eet, Basin replaced or r,=.paired!o design
Walls�8ottnm any evidence o(soil partides entering�tc� standards.
basin thrcugh cracks.or mainlenance person
judgc:that�tvcturc ic un�und.
CracNs wiier then'r4 inch arxllc�,er than 1 faot Nc cra�ks more than'4 Inch wlde a[
al the jant of any iMetloutlet Rpe a arY the jolnt of inleVout et ppe.
evidexe of sal particles eM�ing catch ba;in
thrcxrgh cracks.
SettlemenV Basln has settletl mora than 1 Inc�or has rota0etl Basln replaced or repalretl f�desigr
Msalignment rnore than 2 inches a,t of ali�ment. standards.
Rre Hazatd Presence o(cherric�s such�nalura!gas,al No flanmable ctwmicaPs prosant.
aid gasofne.
VegeWtior Vegefatia�growi�g avos:and blocicing more No vesetation blocking opening to
than t0%of the basin opening. basin.
Vegelation growing in inleVoutet ppe joints th�t No vegetation or ro�t grrnMh
ie mo�e then 6 inches tall end ess than 6 inches present.
apert.
Pdlution Nonflammable chemicals of more han%:cubic No pollution present other than
foot per three feet of besin length. surface film.
Catch Basin Cova Cover Not in Place Cover is niss ng w oriy patia�ly ir place.Any Catch basin co•+er is cbsed
open catch b251n requres mal�tenance.
Lecking Mechanism Mechanis�n cannet be opaied by on Mechanism opens with�oper tools.
Not Working mafMenanca pers�n aith proper tools.Bolt;inb
frame have less than Y:inch o`thread.
Cover Di�cult to one naineenance person camot remore lid after Cover can�e remo��ed Ay me
Remove applyng b0 Ibs.of lift:inte�t is keep cover tom maintenance persai.
sealing oF access to maintensnce.
ladder Ladde-R�ngs Unsafe Ladder is unsa/e due b m ssirg nngs, I..adder meets design standards and
rrisalgnrrent,rusl,aadcs,or sharp edges. albws Taintenance person sa(e
access.
1'=d;21�05 2005 Surface Water Design Manual-Appendix A
A-6
AFP[\UI\�� �1,�1`;TG\:\VCC RCQUIIiC�ICkI'S I'l):f'Li�P C'OV'TT:��L.C:�V`.'E1:\nC'L.AN!)11Q FACII.ITI�S
NO. 10-CONVEYANCE PIPES AND DITCHES EXHIBIT B
Malntenance Defect or Problem Caditions When Maintenance is Neaded Racidtc Fxpncted When
Component Maintenanca Is Performed
Pipes Sedimenl8 Debns Acamulated sediment that exceeds 20�0 of t�e Pipe cleaned of al sediment and
Wameter oT Ihe Fipe. wbns.
vegewam Vegetatlon that rsduces tee movement d water All ve�etztion removeo so water
Ihragh pipes. fbws fredy lhouch pipos.
Damagee Protedivo coating is dorragod:n,�t is caur.�ng F'ipe repeired w replaced.
more than 50%deterioration to any part of piFe.
any deN that decreases the cross section area P�ce reoaired or reolaced.
I �oiw�ine��
'_..y._....... � �
General WeeCs Weeds gvwi�g in mcre than 20%of t�e Weeds present in less thar 5%of
(Nonpoisonous,not landscap�d aea(trees and shrubs or�y). the landsceped area.
rwxious)
;efety I lazarc Any presence of poison ivy a ottwr�wisc�axu No yuiwrrxia vegetatio�presei[in
vege:atio�. lanclsppe9 area.
T�ash or Litter Paper,cans,bottles,totaling mae than 1 cubic Area dear oi litter.
foot urithin a landacaped area(trees and shrubs
rnly)of t,00C aquere feet
Trees ana Shrubs Oamaged li�ii�s u yaits uf lrcva��hrub�thal are splfl x Trees and shruDs wlth ess than S%
broken vnich affect rrore than 25`6 of the Idal of tota tdi3qe with split or broken I
(diac,e of the tree or shrub. lirnbs.
Trees or slutbs thet have been blown down a Tree a sh�ub in place tee ol ir jury. I
laacked over.
Trees or shnms vrtNch are not atlequa�ely Tree a shrub in place and �
wpported or are leanng over,causin�exCosure adequatel�•suDDo�ed:remove any
d the roots. dead cr diseased trees I�
2005 Surface Wacer Design Minual-Appendiz A I/Zil2005
A-9
i
I
�`
AYPL\UI.\;1 M,�I\I I.NA�CF.K1.lJl IKl,�ll �l�.h1.U11 l'(h�i RUl_(O1r�"Ll•Wl h.�1hU 1V111 ACll.l lll[S
NO. 22-BAFFLE OILNVATER SEPARATOR EXH I B(T B
MiMdlMflCf DOFOtI COflf��[1011�1@fl Mi�f1�M1i11CY�8 HY@ded RYSUIIY E]tP6CIYd hl11Bf1 _..•
C.OTPOIMIII ��II�f1�flCY�f Pil�OfilMd
Site Trash and deDris AnY trash or debis Mhfch imFairs the kxution ot Trash and dehrfs aert�oved korn il
�e tadA0.y. fac�ily.
--__. ____ _ _
ContamirenEa and Floatlng oi in exoess ot 1 inch in�st�amber, No canlaminanfs presenl alher than
p�NUUon arry on r other cnarnxn a aU�er cortamina�ls a wrface�I fi m.
of arry hice in arry chamber.
Vr�dl 7m�trtwnt SeAim±M Sedirnert accumulales ezceeCs B inChes n Ihe No sedlmenl in th�vault.
Area acamulation vaup.
Oischarge water rot Yepectia�of disdiarge water atwws obvlous E91ueM disc�rge is dex.
tlear sgrx of poa vraler Qualiry-e1lMient discharqe
tom vaiM shows Ihidc vis�ble sAeen
Trash a debrs Any hasli a�d debris acanw;ation in vaul Vault is dear of Vash md debrfs.
axumulation Ifloatables and non-fbatables).
Ci acaxrulaUon OM accunxdartions that exceed 1 inch.at die No visible dl deplA on w�. 1',
uxfatt of Me weler in�e OtlMvater sepentOr '�
ehamba.
VeuH Strudurc Damagc b V1da�, Gadw wider fha�Yrinch or evi�nee o(�oY Vauk rcplaoed or ropn rcd io dagn
Frame,BoUam,andlor parti�es entering the strudure tMough Ihe speti6cations.
Top Slab aadcs,or mainEenancelrisP�Pe�� I
datortniros Mat tha vaull ia not ctrueturally
SOUI'd
BaMes damaged Baffles corrodmg.crackirg.warping andar Repaa or replace Oatlles lo ^
stwwing sig�oi fafhxe ac deterrrined by apecifcations.
sqv�Wnanc4inepactbn parsonnol.
cr�vay o►a�, inoporeeio wwe Va�vr,.wi1 nd open and dose Vdve op�n a►d dosea norrr+dy
vsNe won�c aea� va�ve does na sea�comple�e�y. va�ve wn peley seals dosed.
�neU0utlet Sedlment Sedtmern t1u 2076 or m,ae ot me . inevoudei dear ot seaiment
i � �9 P�Pe WPes
acarrndatio� '
T�aah a�c de6ris Trss�and debris acarrnlateA in nlet'ouUet No trash a d�bris in pp�s.
V4e=(indudes Ibalebles afld nw�-1loate�CE)
Damaged _ Cradcs v�ider than%,-inch at the�oint o(tl+e No aseka mae then kirKt�wide at
EMeuoudet ppes or any evidenoe of sal entenng the jo�M of the iNeNoulkt ppe.
�e
at the}nints ot the inkUoi:Ue1 pipes
A�coats 1/aMola CowrAid nol n place CoverA�d is micang a ony partialy in plaoe. MaMab accesa covcied.
My open manhole ivqulrvs immediate
maintenanc�.
Lodcing mecherram UecAanism wnnot be opened by one AAed�anism opena wifh prooer tools
not working maritenanOc person+rilh propor mola Bo�ta
camot De seated Se1f-lodcirg averFid does i
not work
CovetAid difflwfl to One maiMenanoe persan camot remove Cover!lid qn be removed and
remove coveYlwd a}Icr appMng ea Ibs ot tiR. remslaNed by one maintenence
, Person.
Ladder nnqs unsak Uissin9 n�ngs.msa�.nist.or uad�s, Ladder meets desqn standards. �
Alov�s menteoance person sale I
acocas.
Lerge acoeas Demaged or�flfuAt Large a¢esa doors or pla6es wrv�ot De Replace o repa�r baYas docx so i�
doorslplale lc open ope��.dlrertaved using namal equipment can opened as designed.
Gaps dcesn't covet Larqe acxess doors rot Aat�dlor acoess Doors dose Ilat and cover acoess ^
camp,eteN openin9'wt completelY c�ered. operN^9 comp�etelY•
IIRI�Rirgs missny Litti�g mgs nol ppable cf Afthp weigM of doar LiRing rings siAfident to i1t or I
rus�ed a ccverroo. remove cwernw. i
�
1/9/2009 2009 Surfacc W�tcr Design Manual-Ap�xndic A �
A-32
I
FIGURES
FIGURE 1-CITY FLOW CONTROL REFERENCE MAP
FIGURE 2-RECORD STORl1-i SYSTEMS(CITY GIS)
FIGURE 3-EXISTING SITE CONDITIONS
FIGURE 4-PROPOSED SITE CONDITIONS
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Pro�c� Renton Technical College Building K Designed By: �W Date: I/22/2014
Project No: C I 3 0055-03 Client:McGranahan Checked By: �A� Sheet:
801 SECOND AVENUE,SUITE 900 SEATTLE, WA 98104 / P 206.343.0460 I cplinc.com
COUGHLIN PORTER LUNDEEN
STRUCTURAL • CIVIL - SEISMIC ENGINEERING
.m�as► eelr
� Po�o�s KIRKLAND AVENUE N.E, LIMTSOFWORK �
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APPENDIX A
Storm Runoff Calculations
• KCRTS out-put
COUGHLIN PORTER LUNDEEN April 17,2015
I(CRTS WKSNI
PROJECT INFORMATION/KCRTS ITYDROGRAPH INPUT SHEET
PROJECT: Remm�Tethnical College a��im�y K DATE: vzzno�s
PROJECT LOCATION: 5 E A T a C Scale Facfor 1.00
PracipaGon: 0.41 in.
� SOIL TYPE: SCS 71'PE: C Soil Group Outwasn
AREAS:
Existing: Tiu r-oresr acres Developed: r�n r-oresr ncres
TN Pasture Acres TDI PasNre Acres
. Tdl Grass 0.9 Acres T�ll Grass 0.87 Acres
Oufwash Forest Acres Outwash Forest Acies
Outwesh Pasture Acres OuAvash Pasture Acres
Oulwash Giass Acres Outwash Grass Acres
WeNand Aues Wetland Acres
Impervious 2.37 Acres fmpervious 2.4 Acres
327 TOTAL 327 TOTAL
Ezistin �evelo ed
PEAK VALUES AND RETURN PERIODS: Rank Return Period Q(hourl) � 15-min) Retum Period (��hourl ) O(15-min)
i 'oo i i9 '00 t 2
� �00 vear Fiow lcfs)= o.et 2 zs o&5 �5 o e�t
3 70 0.725 10 OJ32
f irst Interval cutoB=50%of 2 yr flow= 0.3C 15 4 5 0.701 5 OJ09
��^tervd�.size=(50 Yr Flow-50%2yr Flaw I 135= OA222a2657 S 3 0.616 3 0.624
6 2 0.603 2 0.61
� 13 0.59 1.3 0.598
6 1." 0.506 1.' 0.513
SC 1.OB 50 1.09
Time Step': Hourly Date Type: neduce�
DETENTION RBQ'd? No 'for t5 minute time steo.speuri nar p�t� I�I
Len th Slo e i
Pervious
LEVELOFDETENTION: � Im ervous
WATER QUALffY TREATMENT:
�CheckOne) R6p'd? 6o Type? Bas�c
LANDSLIDE HAZARD DRAINAGE AREA: Na
Filenames used: exisuno Ad�Nonal Key Info.
developed
Renton Technical College
Building K '�
KCRTS Output.txt
Flow Fre uenc Anal sis I
q Y Y
Time Series File:ex till.tsf
Project Location:Sea-Tac '
---Annual Peak Flow Rates--- -----Flow Frequency Analysis------- ��,
Flow Rate Rank Time of Peak - - Peaks - - Rank Return Prob '�
(CFS) (CFS) Period
0.603 6 2109I01 2:00 1.19 1 100.00 0.990
0.506 8 110510216:00 0.860 25.00 0.960
0.725 3 2/27103 7:00 0.725 3 1 . 0.900 �
0.590 7 8/26104 2:00 0.701 4 5.00 0. �
0.701 4 10128/0416:00 0.616 5 3.00 0.667 �
0.616 5 1118I0616:00 0.603 6 2.00 0.500 �
0.860 2 10/26106 0:00 0.590 7 1.30 0.231 0.01-CFS difference in
1.19 1 1109/08 6:00 0.506 8 1.10 0.091 100-year peaks
Computed Peaks 1.08 50.00 0.980
Flow Frequency Analysis
Time Series File:prop-till.tsf
Project Location:Sea-Tac
---Annual Peak Flow Rates--- -----Flow Fre ncy Analysis-------
Flow Rate Rank Time of Peak -- Pea - - Rank Return Prob
(CFS) (CFS) eriod
0.610 6 2/09101 2:00 1.20 1 100.00 0.990
0.513 8 1/0510216:00 0.871 2 25.00 0.960
0.732 3 2/27103 7:00 0.732 3 10.00 0.900
0.598 7 8126/04 2:00 0.709 4 5.00 0.800
0.709 4 10I28/0416:00 0.624 5 3.00 0.667
0.624 5 1/18/0616:00 0.610 6 2.00 0.500
0.871 2 10/26106 0:00 0.598 7 1.30 0.231
1.20 1 1!09/08 6:00 0.513 8 1.10 0.091
Computed Peaks 1.09 50.00 0.980
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