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STORMWATER MANAGEMENT PLAN
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621 Sheridan Street. Port Townsend. Washington 98368
360/379-4450.360/379-4451 Fax
http://www.co.jefferson.wa.us/commdevelopmenU
STORMWATER SITE PLAN SUBMITTAL TEMPLATE
MLA#
PROJECT/APPLICANT NAME:
Please answer all of the following questions to the best of your ability, Where the question calls for depiction on a site map, the applicant
may choose to either incorporate the elements into the general plot plan for the Master Land Use Application or to submit a separate
stonnwater site plan map,
1.
Project Overview
Describe the proposed developed conditions of the site. Indicate position and relative size of proposed improvements on the
site map.
Discovery Bay Golf Club (DBGC) is an existing golf course on a 199, 3-acre site located southwest of the City of Port
Townsend in Jefferson County, This golf course was initially constructed in 1925 and has remained in continuous operation
since that time, Six separate drainage sub-basins have been identified for the storm water management study on this project.
Soils in the study area are generally classed in SCS" hydrological group "C" soils with moderate infiltration potential. The
land slopes generally toward the west with slopes of 5-l5%. This project will add new impervious surfaces consisting of
roadways, arkin areas, walkwa s and residential units.
Existing Conditions Summary
2, Describe the existing topography, Indicate contours on the site map,
The site has a total elevation change of approximately 170-feet from the high point on the east side to the point of concentration
at Discovery Bay Road. Contours are indicated on drawing C-l,
3. Describe the existing vegetation, Indicate native vegetation areas on the site map,
The turf areas of the golf course have been in existence since 1925, Most of the remaining portions of the site have been
logged within the past 30-years and now consists of second growth timber with moderate underbrush. A delineated wetland
exists to the east 0 the construction site,
4, Describe the existing soils, Indicate soil type on the site map,
The existing soils are hydro-geological type "C" with moderate infiltration capacity.
5. Describe the existing site hydrology (i,e., drainage; behavior of water on the site-above, below, and on the ground). Indicate
existing stonnwater drainage to and from the site on the site map, Depict separate drainage basins on the site map, if
applicable, and indicate acreage of each.
The site generally drains FOIn the west toward the southeast. Six separate drainage sub-basins are indicated on drawing C-l,
6, Describe any excess levels of noise generated by the proposed use or activity:
A limited amount of noise is expected to occur during construction, however, since this project is not adjacent to any
residential properties, noise is not expected to be an issue, During operation, the DBGC is not expected to generate any noise
that would be objectionable at the site. L ., 'TJ::I\ A
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7,
Describe significant geographic features and critical areas (i.e" environmentally sensitive areas such as wetlands, streams, steep
slopes, etc,) on the site, Indicate location on the site map,
A regulated wetland exists to the east of the construction site, as shown on Drawing C-I,
8, Describe the general vicinity of the site, including adjacent land uses and structures, utilities, roads, and sensitive/critical areas
(streams, wetlands, lakes, steep slopes, etc,),
Access to DBGC is from Cape George Road and Discovery Bay Road. Land use in the general vicinity is zoned as rural
residential with one lot per five acres, The existing access to DBGC will be shifted approximately 100-feet to provide improved
sight distances and better access to the planned residential units, A wetland is located to the east of the construction site.
Permanent Stormwater Control Plan
This portion of the Stormwater Site Plan consists of the selection and installation of the appropriate stormwater control BMPs and
facilities to remain in place after construction ofthe project is completed,
"Medium" size projects are required to have the totals calculated of all impervious surfaces, pollution-generating impervious
surfaces, and pollution-generating pervious surfaces to verify that the thresholds for treatment facilities and flow control facilities
are not exceeded,
9, Describe the developed site hydrology, as proposed, Indicate whether stormwater will be fully dispersed (i,e., per BMP T5,30 In
the Manual) or, if not, what types of stormwater flow control will be utilized for the site or specific threshold discharge areas
within the site, Locate these facilities on the site plan and differentiate proposed facilities from existing facilities,
SUlface runoff from approximately 75% of the site will remain unchanged. Runoff from the roof of structures will be collected
and routed to dispersion trenches located on each lot, Runofffrom the paved parking area will be routed through a Vortechs
2000 vault for water quality pUlposes, This vault is expected to remove about 90% of the suspended solids in the stormwater,
Following treatment in the Vortechs vault, the discharge will be routed through a pond that will also provide detention storage,
The release rate from the dispersion trench will be controlled at 50% of the 2-Year 24-Hour peakflowrate,
10, If the project requires the use of stormwater treatment facilities, describe the types of stormwater treatment facilities proposed for
use on the site, Locate these facilities on the site plan and differentiate proposed facilities from existing facilities. [This Is
normally for' 1 arge' projects or projects that involve the potential for dispersion of contaminants,]
This project will utilize a Vortechs 2000 vault for water quality control. The vault will be located as shown on Drawing C-j,
11. Describe the performance goals and standards applicable to the project.
The goal of this project is to control water quality and release rates at levels that will not adversely impact the wetland area
located to the east of the site, The water quality device will remove about 90% of the suspended solids in the storm water runoff
ji-om the paved parking area, SUlface runofffrom other pavements will be treated by routing through a bio-swale or across
grassed areas.
12,Describe the flow control system.
Flow ji-om the roof areas of the residences will be collected by gutters and downspouts and directed to on-site dispersion trenches,
SUlface runoffji-om paved areas will be collected through a series of catch basins and piping, then routed through swales or a
water quality device and then routed into a detention pond. The release rate ji-om the detention pond will be controlled by an
orifice plate to control flow rates in accordance with the Washington State Department of Ecology regulations,
13, Describe the water quality system.
Water quality will be maintained through utilization of a Vortechs 2000 water quality vault, or by routing through bio-swales. as
shown on the construction drawings,
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14, Describe the conveyance system analysis and design,
Flow hydrographs for the pre-development condition and the mitigated post-development condition were developed using the
continuous flow hydrograph modeling method as described in the Washington State Department of Ecology Stormwater
Management Regulations for Western Washington, Piping was sized by on the nomographs provided in the same manual.
15, Describe the source offill material; physical characteristics offill material, and deposition of excess material.
On site materials are generally expected to be suitableforfill on the site, It is expected that an excess of 2500 cubic yards will
require off-site disposal.
16, Proposed methods of placement and compaction consistent with the applicable standards on Appendix Chapter 33 of the
Uniform Building Code.
Material will be placed in 6-inch lifts and compacted to 95% maximum dry density,
17, Describe the proposed surfacing material.
WSDOT standard Class HB" asphalt will be used on paved swfaces.
18, Describe methods for restoration of the site,
Areas disturbed during construction that are not covered by impervious swfaces will be planted with native vegetation and
grasses.
19, An Operation and Maintenance Manual is required for each flow control and treatment facility, [This is normally required for
'large' projects only and only those for which facilities are required to control flow or treat runoff,] IfIncluded, list the
Manuals here.
20, List here and include any special reports or studies conducted-to prepare-the Stormwater Site Plan.
Storm water runoff volumes were calculated using the continuous modeling simulation method described in the Western
Washington Stormwater Management Manual. The runoff analysis is included in Appendix "A ",
21, List other necessary permits and approvals as required by other regulatory agencies, If those permits or approvals include
conditions that affect the drainage plan or contain more restrictive drainage-related requirements, describe those conditions or
restrictions here,
The project will also require issuance of a building permit from Jefferson County. No additional stormwater drainage
requirements are expected to be imposed,
lOG ITEM
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. CONSTRUCTION STORMW ATER POLLUTION PREVENTION PLAN (SWPPP)
The Construction SWPPP addresses sediment and erosion control during construction. The BMPs indicated by the applicant it
the template that follows must be installed on the ground during all construction phases of the project. The proponent is responsible fa
preventing sediment and erosion impacts to environmentally sensitive areas and ofT-site areas. Consult the Construction Stormwate
Pollution Prevention (SWPP) Best Management Practices (BMPs) Packet for guidance, particularly with rural residentia
development
SECTION 1- CONSTRUCTION SWPPP NARRATIVE
1, Construction Stonnwater Pollution Plan Elements, Describe how each of the Construction SWPPP elements has been or
wilt be addressed, Identify the type and location of BMPs used to satisfy the required element If an element is not
applicable to the proposal, justify in writing, Descriptions of the 12 8ements are found at section 2,5,2 of the Manual
(beginning on page 2-15),
12 Required Elements - Construction SWPPP
1, Mark Clearing Limits,
See Drawing C- j
2, Establish Construction Access,
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See Drawing C- j
3, Control Flow Rates,
See Drawing C- j
4. Install Sediment Controls,
See Drawing C-3
5. Stabilize Soils,
See Drawing C-3
6, Protect Slopes,
See Drawing C-3
7, Protect Drain Inlets,
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See f)/"{{wing C-3
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/2 Required Elements - Construction SWPPP (continued)
8, Stabilize Channels and Outlets,
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See Drawing C-3
9, Control Pollutants.
See Drawing C-3
10. Control De-Watering (the act of pumping groundwater or storm water away from an active construction site),
Not Applicable
II, Maintain Best Management Practices (BMPs),
Periodic inspections will be performed by Washington Engineering to ensure that BMP's have been installed and are
properly maintained.
12, Manage the Project.
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Washington Engineering will periodically monitor the temporary erosion and sedimentation features to ensure that they are
functioning properly,
2.
Adjacent Areas,
Description of the adjacent areas that may be affected by site disturbance (e,g" streams, lakes, wetlands, residential areas,
roads),
a,
An existing wetland to the east of the construction site will receive treated stormwater from the construction site, Measures
to control impacts are included on Drawing C-3
Description of the downstream drainage path leading from the site to the receiving body of water (minimum distance of
400 yards),
b, Runoff from this site will be treated to the maximum practicable extent by routing through swales and open grassed areas
prior to discharge from the detention ponds, The runoff from the paved parking area will be treated by a water quality
device prior to dischar.~e,
3, Environmentally Sensitive Areas,
a. Description of environmentally sensitive areas that are on or adjacent to the site,
A wetland area exists to the east of the construction site. A "silt fence" will be installed to ensure that runoff is controlled.
to prevent deposition of silt in the wetland,
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b, Description of special requirements for working in or near environmentally sensitive areas.
A wetland area exists to the east of the construction site, near an area where road improvements will be made and seven
residential units will be constructed. A "silt fence" will be installed to ensure that runoff is controlled to prevent deposition
silt in the wetland, LOG ITEM
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Erosion Problem Areas, Description of potential erosion problems on site In the context of the characteristics of the on-site soils
(e,g., erodibility, settleability, permeability, depth, texture, soil struchlre),
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NOlie Identified
5, Construction Phasing,
a. Construction sequence
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(1) Erosion control alld Silt Fences will be installed.
(2) Clearing will occur within the limits shown on drawings
(3) Site soils will be stabilized as required,
(4) Storm drainage features and structures will be installed.
(5) Excavation will occurfor the foundations and floor slabs,
(6) Grading will occurfor roads and parking areas,
(7) Pavements will be placed as shown on drawings
b, Construction phasing (if proposed),
Phasing is planned to cOllstruct the residential units that will be constructed on site, Full build-out of the project is
exoected in 2009,
6, Construction Schedule, Wet season is October 1 through April 30 (page 2-21 of the Manual),
I. Provide a proposed construction schedule,
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II.
The initial phase of golf course improvements is expected to start in June 2005 and complete by October 2005,
The initial construction phase for the roads and residences is expected to start in October 2005 and continue
through a planned completion in 2009,
Wet Season Construction Activities,
a, Proposed wet season construction activities,
Installation of silt fences and grading within construction area.
b, Proposed wet season construction activities for environmentally sensitive areas,
Installation of silt fences and grading within construction area,
7, Financial/Ownership Responsibilities,
a, Identify the property owner responsible for the initiation of bonds and for other financial securities,
WeFore LLC (Discovel)' Bay Golfelub)
b, Describe bonds and/or other evidence of financial responsibility for liability associated with erosion and sedimentation
impacts,
Bonding offeatures will be accomplished as required by Jefferson County
8, Engineering Calculations, Provide Dcsign Calculations on a separate sheet for the following, if applicable.
a. Sediment Ponds/Traps, -N/A
b, Diversions. -N/A
c, Waterways, -N/A
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d,
Runoff/ Stom1water Detention Calculations - See Appendix A,
SECTION II- EROSION AND SEDIMENT CONTROL PLAN
Sediment and erosion control measures may be depicted on the master land use application plot plan, a stom1water site plan, and/or a
separate Construction SWPPP site plan. This is a checklist to ensure that the following are d~Picted~O@eplaFI\~1
I 1, GeneraL #~_
Pagt3_1 O~_~
. x
x
X-
2,
x
x
x
x
N/A
x
x
x
x
x
3,
X
X
X
X
X
N/A
4,
5,
. X
N/A
N/A
N/A
N/A
X
X
X
N/A
N/A
N/A
X
X
6.
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a, Vicinity Map
b. Jefferson County Approval Block
c, Erosion and Sediment Control Notes
Site Plan.
a. Legal description of subject property,
b, North arrow.
c. Indicate boundaries of existing vegetation (e,g" tree lines, pasture areas, etc,),
d, Identify and label areas of potential erosion problems,
e, Identify FEMA base flood boundaries and Shoreline Management boundaries (if applicable).
f. Show existing and proposed contours,
g, Indicate drainage basins and direction of flow for individual drainage areas.
h, Label final grade contours and identify developed condition drainage basins,
1. Delineate areas that are to be cleared and graded,
J. Show all cut and fill slopes indicating top and bottom of slope catch lines,
Conveyance Systems,
a, Designate locations for swales, interceptor trenches, or ditches,
b, Show all temporary and permanent drainage pipes, ditches, or cut-off trenches required for erosion & sediment controL
c. Provide minimum slope and cover for all temporary pipes or call out pipe inverts,
d, Shows grades, dimensions, and direction of flow in all ditches, swales, culverts and pipes,
e. Provide details for bypassing off-site runoff around disturbed areas.
f, Indicate locations and outlets of any dewatering systems,
Location of Detention Best Management Practices (BMPs), Identify location of detention BMPs,
Erosion and Sediment Control Facilities.
a, Show the locations of sediment trap(s), pond(s), pipes and structures,
b, Dimension pond berm widths and inside and outside pond slopes,
c, Indicate the trap/pond storage required and the depth, length, and width dimensions,
d, Provide typical section views through pond and outlet structure.
e, Provide typical details of gravel cone and standpipe, and/or other filtering devices.
f. Detail stabilization techniques for outlet/inlet.
g, Detail control/restrictor device location and details,
h. Specify mulch and/or recommended cover ofbenns and slopes.
1. Provide rock specifications and detail for rock check dames), if applicable,
J. Specify spacing for rock check dams as required,
k. Provide front and side sections of typical rock check dams,
1. Indicate the locations and provide details and specifications for silt fabric,
ill. Locate the construction entrance and provide a detail.
Detailed Drawings, Any structural practices used that are not referenced in the Ecology Manual should be explained and
illustrated with detailed drawings,
Standard practices and BMP's are in compliance with the Ecolof!V Manual.
7, Other Pollutant BMPs. Indicate on the site plan the locations ofBMPs to be used for the control of pollutants other than
sediment (e,g" concrete wash water),
None Required
8. Monitoring locations, Indicate on the site plan the water quality sampling locations to be used for monitoring water quality on
the construction site, Sampling stations should be located upstream and downstream of the project site,
Not Applicable
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Stonnwater Site Plan Changes
If the designer wishes to make changes or revisions to the originally approved Stormwater Site Plan, the proposed revisions shall be
submitted to DCD prior to construction. The submittal shall include substitute pages that include all proposed changes, revised drawings
showing any structural changes, and any other supporting information that explains and supports the reason for the change,
Final Corrected Plan Submittal
If the project included construction of conveyance systems, treatment facilities, flow control facilities, or structural source control BMP:
(not standard on-s~ stormwater management BMPs), the applicant shall submit a final corrected plan ("as-builts") when the project i!
completed, These should be engineering drawings (stamped by a licensed civil engineer) that accurately represent the project a!
constructed.
APPLICANT
SIGNATURE
By signing the Construction SWPPP worksheet, I as the applicant/owner attest that the information provided herein is true and correct
to the best of my knowledge, I also certify that this application is being made with the full knowledge and consent of all owners of the
affected property.
(I.ANDOWNER OR AJJTHORIZED REPRESENT A T1 VE SIGNATURE)
(DATE)
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THIS SPACE MAYBE USED FOR ADDITIONAL NOTES, IF NEEDED:
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'tEAR flOW (m)
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~80 ,0000
Yearly Peaks for Predeveloped
ro!R fLOW (m)
100 5,057
50 4,324
25 3.632
10 2.773
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Yearly Peaks for developed W/O Pond
\'EAR flOW (m)
1(1) ,4543
50 ,4061
25 ,3585
, '10 ,2955
5 .2465
,1743
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. "",,%"><)C<X6'~:flf~~Vel{)/}ed
;x)<)<;x;x><x)Q<X'\.y>>:~.. X Oevelope( Mitigate
"x
10E-2
1 10 20 30 405060 70 80 90 99
.CumulativeProbability
Flow Frequency Chart
\} PI elleveloped
x Develol)ed with Facility
'IOE-5 10E-4 10E-3 10E-2 10E-1 1
Percent Exceedin
Duration Graph
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Appendix A
Sub-basin A
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WESTERN WASHHoll.;TUN HIUKULUl,;1 1"'lVU!!o.l.l v",
PROJECT REPORT
Project Name:
Site Address:
City
Report Date
Gage
Data Start
Da ta End
(adjusted)
DBGC-Basin A
Cape George Road
Port Townsend, WA
5/2/2005
Port Angelis
1948
1993
Precip Scale: 0.80
PREDEVELOPED LAND USE
Basin
Flows To
GroundWat~r:
Land Use
TILL FOREST:
Basin A
Point of Compliance
No
Acres
2.6
DEVELOPED
Basin
Flows To
GroundWater:
Land Use
TILL FOREST:
LAND USE
Basin
Point
No
1
of Compliance
Acres
2.6
RCHRES (POND) INFORMATION
ANALYSIS RESULTS
Flow Frequency Return
Return Period
2 year
5 year
10 year
25 year
50 year
100 year
periods for
Flow (cfs)
0.008442
0.029427
0.054164
0.100602
0.147556
0.205934
Predeveloped
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Flow Frequency Return
Return Period
2 year
5 year
10 year
25 year
50 year
100 year
Periods for Developed ~tigated
Flow (cfs)
0.008442
0.029427
0.054164
0.100602
0.147556
0.205934
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Yearly Peaks
Year
1949
1950
1951
for Predeveloped and Developed-~tigated
Predeveloped Developed
0.002 0.002
0.019 0.019
0.014 0.014
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1953 0.004 U.UULJ
1954 0.046 0.046
1955 0.040 0.040
1956 0.007 0.007
1957 0.022 0.022
1958 0.002 0.002
. 1959 0.025 0.025
1960 0.038 0.038
1961 0.035 0.035
1962 0.001 0.001
1963 0.006 0.006
1964 0,008 0.008
1965 0.003 0.003
1966 0.003 0.003
1967 0.043 0.043
1968 0,007 0.007
1969 0.001 0.001
1970 0.001 0.001
1971 0.058 0.058
1972 0.067 0.067
1973 0.003 0.003
1974 0.003 0.003
1975 0,006 0.006
1976 0.006 0.006
1977 0.000 0.000
1978 0.000 0.000
1979 0.000 0.000
1980 0.021 0.021
1981 0.014 0.014
1982 0.039 0.039
1983 0.026 0.026
1984 0.001 0.001
1985 0.037 0.037
1986 0.080 0.080
1987 0.030 0.030
. 1988 0.007 0.007
1989 0.008 0.008
1990 0.016 0.016
1991 0.035 0.035
1992 0.039 0.039
1993 0.001 0.001
.
Ranked Yearly Peaks for
Rank Predeveloped
1 0.0803
2 0.0672
3 0.0578
4 0.0455
5 0.0430
6 0.0401
7 0.0393
8 0.0390
9 0.0382
10 0.0373
11 0.0350
12 0.0347
13 0.0296
14 0.0264
15 0.0254
16 0.0219
17 0.0206
18 0.0192
19 0.0163
20 0.0144
21 0.0137
22 0.0084
23 0.0076
24 0.0073
25 0.0070
26 0.0069
27 0.0063
Predeveloped and Developed-~tigated
Developed
0.0803
0.0672
0.0578
0.0455
0.0430
0.0401
0.0393
0.0390
0.0382
0.0373
0.0350
0.0347
0.0296
0.0264
0.0254
0.0219
0.0206
0.0192
0.0163
0.0144
0.0137
0.0084
0.0076
0.0073
0.0070
0.0069
0.0063
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29 0.0060 0.0060
30 0.0037 0.0037
31 0.0034 0.0034
32 0.0031 0.0031
33 0.0029 0,0029
34 0.0026 0.0026
. 35 0.0019 0.0019
36 0.0016 0.0016
37 0.0014 0.0014
38 0.0014 0.0014
39 0.0012 0.0012
40 0.0012 0.0012
41 0.0008 0.0008
42 0.0006 0.0006
43 0.0005 0.0005
44 0.0004 0.0004
45 0.0003 0.0003
1/2 2 year to 50 year
Flow (CFS) Predev Final Percentage Pass/Fail
0.0042 5522 5522 100.0 Pass
0.0057 4079 4079 100.0 Pass
0.0071 3212 3212 100.0 Pass
0.0086 2670 2670 100.0 Pass
0.0100 2244 2244 100.0 Pass
0.0115 1862 1862 100.0 Pass
0.0129 1550 1550 100.0 Pass
0.0144 1297 1297 100.0 Pass
0.0158 1084 1084 100.0 Pass
0.0173 907 907 100.0 Pass
0.0187 761 761 100.0 Pass
0.0201 642 642 100.0 Pass
0.0216 558 558 100.0 Pass
. 0.0230 484 484 100.0 Pass
0.0245 416 416 100.0 Pass
0.0259 362 362 100.0 Pass
0.0274 310 310 100.0 Pass
0.0288 270 270 100.0 Pass
0.0303 230 230 100.0 Pass
0.0317 191 191 100.0 Pass
0.0332 148 148 100.0 Pass
0.0346 120 120 100.0 Pass
0.0361 103 103 100.0 Pass
0.0375 87 87 100.0 Pass
0.0390 76 76 100.0 Pass
0.0404 66 66 100.0 Pass
0.0419 59 59 100.0 Pass
0.0433 53 53 100.0 Pass
0.0448 49 49 100.0 Pass
0.0462 44 44 100.0 Pass
0.0477 39 39 100.0 Pass
0.0491 37 37 100.0 Pass
0.0506 35 35 100.0 Pass
0.0520 32 32 100.0 Pass LOG ITEM
0.0534 30 30 100.0 Pass #
0.0549 28 28 100.0 Pass
0.0563 26 26 100.0 Pass Pa~b~
0.0578 25 25 100.0 Pass
0.0592 22 22 100.0 Pass ~_of))
0.0607 21 21 100.0 Pass --.:_.
O. 0621 20 20 100.0 Pass \
0.0636 19 19 100.0 Pass I
0.0650 17 17 100.0 Pass
. 0.0665 16 16 100.0 Pass M.
0.0679 15 15 100.0 Pass
0.0694 13 13 100.0 Pass
0.0708 11 11 100.0 Pass
0.0723 11 11 100.0 Pass
0.0737 10 10 100.0 Pass
0.0752 9 9 100.0 Pass
0.0766 9 9 100.0 Pass
- - - -
0.0795 1 1 100.0 Pass
0.0810 0 0 100.0 Pass
0.0824 0 0 .0 Pass
0.0839 0 0 .0 Pass
0.0853 0 0 .0 Pass
.0867 0 0 .0 Pass
0882 0 0 .0 Pass
.0896 0 0 .0 Pass
0.0911 0 0 .0 Pass
0.0925 0 0 .0 Pass
0.0940 0 0 .0 Pass
0.0954 0 0 .0 Pass
0.0969 0 0 .0 Pass
0.0983 0 0 .0 Pass
0.0998 0 0 .0 Pass
0.1012 0 0 .0 Pass
0.1027 0 0 .0 Pass
0.1041 0 0 .0 Pass
0.1056 0 0 .0 Pass
0.1070 0 0 .0 Pass
0.1085 0 0 .0 Pass
0.1099 0 0 .0 Pass
0.1114 0 0 .0 Pass
0.1128 0 0 .0 Pass
0.1143 0 0 .0 Pass
0.1157 0 0 .0 Pass
0.1172 0 0 .0 Pass
0.1186 0 0 .0 Pass
0.1200 0 0 .0 Pass
0.1215 0 0 .0 Pass
0.1229 0 0 .0 Pass
0.1244 0 0 .0 Pass
0.1258 0 0 .0 Pass
0.1273 0 0 .0 Pass
.1287 0 0 .0 Pass
1302 0 0 .0 Pass
.1316 0 0 .0 Pass
0.1331 0 0 .0 Pass
0.1345 0 0 .0 Pass
0.1360 0 0 .0 Pass
0.1374 0 0 .0 Pass
0.1389 0 0 .0 Pass
0.1403 0 0 .0 Pass
0.1418 0 0 .0 Pass
0.1432 0 0 .0 Pass \
0.1447 0 0 .0 Pass
0.1461 0 0 .0 Pass
0.1476 0 0 .0 Pass 1,~
Water Quality BMP Flow and Volume.
On-line facility volume: 0 acre-feet
On-line facility target flow: 0 cfs.
Adjusted for 15 min: 0 cfs.
Off-line facility target flow: 0 cfs.
Adjusted for 15 min: 0 cfs.
This program and accompanying documentation is provided 'as-is' without warranty of any kind. The entire risk regardin,
the performance and results of this program is assumed by the user. Clear Creek Solutions and the Washington State
Department of Ecology disclaims all warranties, either expressed or implied, including but not limited to implied
warranties of program and accompanying documentation. In no event shall Clear Creek Solutions and/or the Washington
state Department of Ecology be liable for any damages whatsoever (including without limitation to damages for loss of
business profits, loss of business information, business interruption, and the like) arising out of the use of, or
inability to use this program even if Clear Creek Solutions or the Washington State Department of Ecology has been
advised of the possibility of such damages.
.
#
PaDe
Q -
LOG ITEM
_Lt
l4 of'\-
- -:J..f-
. YEAR FLOW (m)
-
-t 1.0
. -
Q)
0)
-
n:I 10E-1
.c
(,)
0
i5
160 .0000
Yearly Peaks for Predeveloped
YEAR flOW (m)
100 5.057
50 4.324
25 3.632
'10 2.773
5 2.153
2 1.327
.
Yearly Peaks for developed W/O Pond
YEAR flOW (tis)
100 .4543
50 .4061
25 .3585
'10 .2955
.2465
.1743
Yearly Peaks for Developed WIPond
.
....--..
J!!
o
-
Q)
t>>
..
n:I
~
(,)
f/)
a
1 8.0 ~,o.:).;)[)<)~):)(]()(:(){):}:::<::rX(O~t:lXt,!,::(X:(l
. [I
or) 0<>0 t) .
o
_r(",t). x~t(:X:x.
':<>>>~""~~>Pf~develo/HHI
x)<)<:x:x>(x)O<.~"<)')I)<: )( Developer Mitigate
)<x
10E-2
1 10 20 30 405060 70 80 90 99
Cumulative Probability
Flow Frequency Chart
\) PI edewloped
x [jeveIOI)l~d with Facility
10E-5 10E.4 10E-3 10E-2 10E-1 .,
Percent Exceedin
Duration Graph
10
(...----. - -._-_.,-~- ..--.--
II
LOG ITEM
# - -L,--
Page t./' ..(:. -
- ~ _Ol',"\.
~""'"""--
Appendix A
Sub-basin B
WESTERN WASHINGTON HYDROLOGY MODEL V2
PROJECT REPORT
.
Project Name:
Si te Address:
City
Report Date
Gage
Data Start
Da ta End
(adj usted)
DBG-Basin B
Cape George Road
Port Townsend, WA
5/2/2005
Port Angelis
1948
1993
Precip Scale: 0.80
PREDEVELOPED LAND USE
Basin
Flows To
GroundWater:
Land Use
TILL FOREST:
TILL GRASS:
IMPERVIOUS:
Basin 1 - Golf
Pond 1
No
Acres
4.7
16.3
1.1
Basin
Flows To
GroundWater:
.
Land Use
TILL FOREST:
Basin
Pond
No
2 - Res+Undev
1
Acres
14.2
DEVELOPED
Basin
Flows To
GroundWa ter:
Land Use
TILL FOREST:
TILL GRASS:
IMPERVIOUS:
LAND USE
Basin
Pond
No
1
1
Acres
4.7
16.3
1.1
Basin
Flows To
GroundWa ter :
Land Use
TILL FOREST:
TILL GRASS:
IMPERVIOUS:
Basin 2 - Res+Undev
Extender 1
No
Acres
9.8
0.9
3.5
.
RCHRES (POND) INFORMATION pond exists in the predeveloped scenareo
Pond Name: Pond 1
Pond Type: Trapezoidal Pond
Pond Flows to : Point of Compliance
Pond Rain / Evap is activated.
\ '
\
\
/' j'/ ~
fli
# LOG ITEtv1
Page--Lp L~
- ---- Ofs I
"-----
Depth: 2ft.
Bottom Length: 160ft.
Bottom Width: 160ft.
Side slope 1: 3 To 1
Side slope 2: 3 To 1
Side slope 3: 3 To 1
Side slope 4: 0 To 1
Volume at Riser Head:
Discharge Structure
Riser Height: 1 ft.
Riser Diameter: 12 in.
.
.
stage (ft)
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
0.900
1.000
1. 100
1. 200
1.300
1.400
1. 500
1.600
1.700
1.800
1.900
2.000
0.604 acre-ft.
Pond Hydraulic
Area (acr) Volume (acr-ft)
0.588 0.000
0.591 0.059
0.594 0.118
0.598 0.178
0.601 0.238
0.604 0.298
0.608 0.359
0.611 0.420
0.614 0.481
0.618 0.542
0.621 0.604
0.625 0.667
0.628 0.729
0.631 0.792
0.635 0.856
0.638 0.919
0.642 0.983
0.645 1.048
0.649 1.112
O. 652 1. 17 7
0.655 1.243
Table
Dschrg (cfs)
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.308
0.871
1.600
2.464
3.443
4.526
5.704
6.969
8.315
9.739
Infilt(cfs)
0.000
0.596
0.600
0.604
0.608
0.612
0.616
0.620
0.624
0.628
0.632
0.636
0.640
0.644
0.648
0.652
0.656
0.660
0.664
0.668
0.672
Pond Name:
Pond Type:
Pond Flows
Pond Rain /
Dimensions
Depth: 2ft.
Bottom Length: 135ft.
Bottom Width: 160ft.
Side slope 1: 3 To 1
Side slope 2: 3 To 1
Side slope 3: 3 To 1
Side slope 4: 3 To 1
Volume at Riser Head:
Discharge Structure
Riser Height: 1 ft.
Riser Diameter: 12 in.
.
Stage (ft)
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
0.900
1.000
1. 100
1.200
1.300
1.400
Pond 1
Trapezoidal Pond
to : Pond 2
Evap is not activated.
0.610 acre-ft.
Pond Hydraulic
Area (acr) Volume(acr-ft)
0.588 0.000
0.592 0.059
0.597 0.118
0.601 0.178
0.605 0.239
0.610 0.299
0.614 0.361
0.619 0.422
0.623 0.484
0.628 0.547
0.633 0.610
0.637 0.673
0.642 0.737
0.646 0.802
0.651 0.867
Table
Dschrg(cfs)
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.308
0.871
1.600
2.464
Infilt(cfs)
0.000
0.597
0.602
0.607
0.611
0.616
0.621
0.626
0.631
0.635
0.640
0.645
0.650
0.655
0.660
'\
I
LOG ITEM
#- I]
ParJ(~ I*'J f-
~1J--L o~
- -S:L
1.600 0.660 0.998 4.526 0.670
1. 700 0.665 1. 064 5.704 0.675
1.800 0.670 1.131 6.969 0.680
1.900 0.674 1.198 8.315 0.685
2.000 0.679 1.266 9.739 0.690
.
Pond 2
Trapezoidal Pond
to : Point of Compliance
Evap is not activated.
Pond Name:
Pond Type:
Pond Flows
Pond Rain /
Dimensions
Depth: 3ft.
Bottom Length: 210ft.
Bottom Width: 210ft.
Side slope 1: 1 To 1
Side slope 2: 1 To 1
Side slope 3: 1 To 1
Side slope 4: 1 To 1
Volume at Riser Head:
Discharge Structure
Riser Height: 2 ft.
Riser Diameter: 12 in.
Orifice 1 Diameter: 6
Oft.
2.064 acre-ft.
in.
Elevation:
Pond Hydraulic Table
Stage (ft) Area (acr) Volume (acr-ft) Dschrg(cfs) Infilt(cfs)
0.000 1.012 0.000 0.000 0.000
0.100 1. 014 0.101 0.299 1.024
0.200 1. 016 0.203 0.423 1.026
0.300 1. 018 0.305 0.518 1. 029
0.400 1. 020 0.407 0.598 1. 032
0.500 1.022 0.509 0.669 1. 035
0.600 1.024 0.611 0.732 1. 037
. 0.700 1.026 0.713 0.791 1. 040
0.800 1. 028 0.816 0.846 1. 043
0.900 1. 030 0.919 0.897 1. 04 6
1.000 1.032 1. 022 0.946 1. 048
1.100 1.034 1.125 0.992 1. 051
1. 200 1. 036 1. 229 1. 036 1.054
1.300 1.038 1.332 1. 078 1.057
1. 400 1. 040 1. 436 1.119 1. 060
1.500 1.042 1.540 1.158 1. 062
1.600 1. 043 1. 645 1.196 1.065
1.700 1. 045 1.749 1. 233 1. 068
1. 800 1. 047 1. 854 1. 269 1. 071
1.900 1. 049 1.959 1. 303 1. 074
2.000 1. 051 2.064 1. 337 1.076
2.100 1.053 2.169 1. 678 1.079
2.200 1. 055 2.274 2.273 1.082
2.300 1. 057 2.380 3.034 1.085
2.400 1. 059 2.486 3.929 1. 088
2.500 1.061 2.592 4.938 1.090
2.60e 1.063 2.698 6.051 1. 093
2.700 1. 065 2.804 7.257 1.096
2.800 1. 067 2.911 8.551 1. 099
2.900 1.069 3.018 9.925 1. 102
3.000 1. 071 3.125 11. 38 1. 105
ANALYSIS RESULTS
.
periods for
Flow (cfs)
o
o
o
o
o
Predeveloped
Flow Frequency Return
Return Period
2 year
5 year
10 year
25 year
50 year
\
I
MAl' -
LOG ITEM
#- I,
Page_Lf~Of)' .
...",..~
.
Flow Frequency Return
Return Period
2 year
5 year
10 year
25 year
50 year
100 year
Flow Frequency Return
Return Period
2 year
5 year
10 year
25 year
50 year
100 year
Periods for Developed Unmitigated
Flow (cfs)
0.850849
1.339512
1.698132
2.18694
2.575188
2.982961
Periods for Developed ~tigated
Flow (cfs)
0.136617
0.178378
0.203208
0.231942
0.251717
0.270294
Peaks for Predeveloped and Developed-~tigated
.
Yearly
Year
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
Predeveloped
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.849
0.000
0.000
0.000
0.000
0.000
0.000
0.000
.
Developed
0.159
0.152
0.161
0.069
0.162
0.182
0.192
0.122
0.145
0.104
0.156
0.156
0.149
0.092
0.113
0.160
0.106
0.097
0.178
0.113
0.085
0.129
0.216
0.249
0.144
0.057
0.142
0.136
0.094
0.106
0.234
0.113
0.199
0.159
0.140
0.083
0.230
0.211
0.150
0.131
0.114
0.095
0.164
0.141
0.079
Ranked Yearly Peaks for Predeveloped and Developed-~tigated
Rank Predeveloped Developed
~ ~~n~ n ~AOO
'\
i
jlJ''/
LOG ITE.'~N "
# ,ii"
lifff
Pa~L+ (7~ >.
!i"'r'..j'_
--_''''''J) \
. =>-"*"'''''''''''-
.
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
.
.
1/2 2 year to 50
Flow (CFS) Predev
0.0000 394464
0.0000 630
0.0000 581
0.0000 527
0.0000 483
0.0000 433
0.0000 392
0.0000 335
0.0000 288
0.0000 256
0.0000 230
0.0000 209
0.0000 193
0.0000 178
0.0000 160
0.0000 137
0.0000 124
0.0000 108
0.0000 97
0.0000 84
0.0000 73
0.0000 64
0.0000 53
0.0000 48
year
Fi.nal
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
0.2:340
0.2298
0.2161
0.2108
0.1991
0.1917
0.1816
0.1785
0.1636
0.1617
0.1614
0.1603
0.1595
0.1586
0.1561
0.1560
0.1516
0.1499
0.1485
0.1446
0.1445
0.1418
0.1411
0.1395
0.1363
0.1312
0.1288
0.1220
0.1142
0.1134
0.1133
0.1133
0.1061
0.1061
0.1040
0.0968
0.0948
0.0935
0.0917
0.0853
0.0832
0.0789
0.0690
0.0571
Percentage
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
Pass/Fail
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
LOG ITEM
#- 17
p'. -~
aoe !A . '~, -
.... ______Oq..( ,
. '_-"'~"",...-_.,---
\
,
0.0000 38 0 .0 Pass
0.0000 35 0 .0 Pass
0.0000 33 0 .0 Pass
0.0000 30 0 .0 Pass
0.0000 30 0 .0 Pass
0.0000 27 0 .0 Pass
. 0.0000 26 0 .0 Pass
0.0000 24 0 .0 Pass
0.0000 23 0 .0 Pass
0.0000 21 0 .0 Pass
0.0000 20 0 .0 Pass
0.0000 20 0 .0 Pass
0.0000 19 0 .0 Pass
0.0000 18 0 .0 Pass
0.0000 18 0 .0 Pass
0.0000 17 0 .0 Pass
0.0000 16 0 .0 Pass
0.0000 16 0 .0 Pass
0.0000 15 0 .0 Pass
0.0000 14 0 .0 Pass
0.0000 13 0 .0 Pass
0.0000 13 0 .0 Pass
0.0000 12 0 .0 Pass
0.0000 12 0 .0 Pass
0.0000 12 0 .0 Pass
0.0000 10 0 .0 Pass
0.0000 9 0 .0 Pass
0.0000 9 0 .0 Pass
0.0000 8 0 .0 Pass
0.0000 5 0 .0 Pass
0.0000 3 0 .0 Pass
0.0000 3 0 .0 Pass
0.0000 1 0 .0 Pass
0.0000 1 0 .0 Pass
0.0000 1 0 .0 Pass
. 0.0000 1 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass )
0.0000 0 0 .0 Pass I
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass .
VI ,
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
. 0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass LOG ITEM
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass # -L")
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass Pagl9 ~.of )(
f\ nnf'\f\ f'\ f'\ f\ D-.~.....
, _.
.
.
.
0.0000
0.0000
o
o
o
o
.0
.0
Pass
Pass
Water Quality BMP Flow and Volume.
On-line facility volume: 0 acre-feet
On-line facility target flow: 0 cfs.
Adjusted for 15 min: 0 cfs.
Off-line facility target flow: 0 cfs.
Adjusted for 15 min: 0 cfs.
This program and accompanying documentation is provided 'as-is' without warranty of any kind. The entire risk regar(
the performance and results of this program is assumed by the user. Clear Creek Solutions and the Washington State
Department of Ecology disclaims all warranties, either expressed or implied, including but not limited to implied
warranties of program and accompanying documentation. In no event shall Clear Creek Solutions and/or the Washingtol
State Department of Ecology be liable for any damages whatsoever (including without limitation to damages for loss 0:
business profits, loss of business information, business interruption, and the like) arising out of the use of, or
inability to use this program even if Clear Creek Solutions or the Washington State Department of Ecology has been
advised of the possibility of such damages.
'\
I
LOG ITEM
#- (/
Pag'3 Z 2.- ofS
---..... ,
.~-.~~,.
YEilIR flOW (m)
;e 1.0
. I,)
-
Q)
en
r..
n:I 10E-1
.&:.
I,)
III
0
.
.
!60 .0000
Yearly Peaks for Predeveloped
YEAR flOW (m)
100 5.057
50 4.324
25 3.632
'11) 2.773
5 2.153
2 1.327
Yearly Peaks for developed W/O Pond
YEAR flOW (m)
100 .4543
50 .4061
25 .3585
10 .2955
5 .2465
.1743
i
o
.....
Q)
.0')
'"
'fU
~
I,)
III
is
10.0
()().;)r)-:)(:<~r:_,,;>:)t)l):);::;(I):):)~J):X-T):~<):):)
.(1
i.)(lc;(iot,l'
o
#~~~C~~~f~~j';;~~:fed
x:<)<><):):)<xxr:>o<XXW:X' )( Developer Mitigate
><
10E-2
1 10 20 30 405060 70 80 90 99
Cumulative Probability
Flow Frequency Chart
n Pn:<leveIOI)ed
x OevelOI)ed with Facility
10E-5 10E-4 10E-3 10E-2 10E-1 1
Percent Exceed in
Duration Graph
'10
\
\
LOG ITEM
#- II
Pags_ ~_of..~'-t-
Appendix A
Su~-basin C
.
.
.
WESTERN WASHINGTON HYDROLOGY MODEL V2
PROJECT REPORT
Project Name:
Site Address:
City
Report Date
Gage
Data Start
Da ta End
(adjusted)
DBGC-Basin C
Cape George Road
Port Townsend, WA
5/2/2005
Port Angelis
1948
1993
Precip Scale: 0.80
PREDEVELOPED LAND USE
Basin
Flows To
GroundWater:
Land Use
TILL FOREST:
TILL GRASS:
IMPERVIOUS:
Basin 1 - Golf
Pond 1
No
Acres
1.8
6.2
0.3
Basin
Flows To
GroundWater:
Land Use
TILL FOREST:
Basin
Pond
No
2 - Res+Undev
1
Acres
12.5
DEVELOPED LAND USE
Basin Basin 1
Flows To Pond 1
GroundWater: No
Land Use
TILL FOREST:
TILL GRASS:
IMPERVIOUS:
Acres
1.8
6.2
0.4
Basin
Flows To
GroundWa ter:
Land Use
TILL FOREST:
TILL GRASS:
IMPERVIOUS:
Basin 2 - Res+Undev
Extender 1
No
Acres
8.3
0.8
3.4
in the predeveloped
RCHRES (POND) INFORMATION pond exists
I?ond Name: Pond 1
Pond Type: Trapezoidal Pond
Pond Flows to : Point of Compliance
Pond Rain / Evap is activated.
\ (
\
I
lVF
# LOG frEf'.!1
Pe;:;;---LI.
'~.:, -2~L- O(f(
scenareo -'_..
Depth : 2ft.
Bottom Length: 94ft.
Bottom Width : 94ft.
Side slope 1: 3 To 1
Side slope 2: 3 To 1
Side slope 3: 3 To 1
. Side slope 4: 3 To 1
Volume at Riser Head: 0.216 acre-ft.
Discharge Structure
Riser Height: 1 ft.
Riser Diameter: 12 in.
Pond Hydraulic Table
stage (ft) Area(acr) Volume (acr-ft) Dschrg (cfs) Infilt(cfs)
0.000 0.203 0.000 0.000 0.000
0.100 0.205 0.020 0.000 0.207
0.200 0.208 0.041 0.000 0.210
0.300 0.211 0.062 0.000 0.213
0.400 0.213 0.083 0.000 0.216
0.500 0.216 0.105 0.000 0.219
0.600 0.219 0.126 0.000 0.221
0.700 0.221 0.148 0.000 0.224
0.800 0.224 0.171 0.000 0.227
0.900 0.227 0.193 0.000 0.230
1. 000 0.230 0.216 0.000 0.233
1.100 0.232 0.239 0.308 0.236
1. 200 0.235 0.263 0.871 0.239
1. 300 0.238 0.286 1.600 0.242
1.400 0.241 0.310 2.464 0.245
1. 500 0.244 0.334 3.443 0.248
1.600 0.246 0.359 4.526 0.251
1.700 0.249 0.384 5.704 0.254
1. 800 0.252 0.409 6.969 0.257
1.900 0.255 0.434 8.315 0.260
. 2.000 0.258 0.460 9.739 0.263
Pond Name: Pond 1
Pond Type: Trapezoidal Pond
Pond Flows to : Pond 2
Pond Rain / Evap is not activated.
Dimensions
Depth: 2ft.
Bottom Length: 135ft.
Bottom Width: 160ft.
Side slope 1: 3 To 1
Side slope 2: 3 To 1
Side slope 3: 3 To 1
Side slope 4: 3 To 1
Volume at Riser Head: 0.610 acre-ft.
Discharge Structure
Riser Height: 1 ft.
Riser Diameter: 12 in.
f~ i
Pond Hydraulic Table
Stage (ft) Area (acr) Volume (acr-ft) Dschrg(cfs) Infil.t(cfs)
0.000 0.588 0.000 0.000 0.000
0.100 0.592 0.059 0.000 0.597
0.200 0.597 0.118 0.000 0.602
0.300 0.601 0.178 0.000 0.607
0.400 0.605 0.239 0.000 0.611
0.500 0.610 0.299 0.000 0.616
0.600 0.614 0.361 0.000 0.621
. 0.700 0.619 0.422 0.000 0.626 LOG ITEM
0.800 0.623 0.484 0.000 0.631 #
0.900 0.628 0.547 0.000 0.635 Pa~
1. 000 0.633 0.610 0.000 0.640
1. 100 0.637 0.673 0.308 0.645
1. 200 0.642 0.737 0.871 0.650 --..:-- O~:..r I
1. 300 0.646 0.802 1.600 0.655 "'-.,~" .
1.400 0.651 0.867 2.464 0.660
1.600 0.660 0.998 4.526 0.670
1.700 0.665 1.064 5.704 0.675
1.800 0.670 1.131 6.969 0.680
1.900 0.674 1.198 8.315 0.685
2.000 0.679 1.266 9.739 0.690
. Pond Name: Pond 2
Pond Type: Trapezoidal Pond
Pond Flows to : Point of Compliance
Pond Rain / Evap is not activated.
Dimensions
Depth : 3ft.
Bottom Length: 210ft .
Bottom Width : 210ft .
Side slope 1: 1 To 1
Side slope 2: 1 To 1
Side slope 3: 1 To 1
Side slope 4: 1 To 1
Volume at Riser Head: 2.064 acre-ft.
Discharge Structure
Riser Height: 2 ft.
Riser Diameter: 12 in.
Orifice 1 Diameter: 6 in. Elevation: 0 ft.
Pond Hydraulic Table
stage (ft) Area (acr) vol.ume(acr-ft) Dschrg(cfs) Infil.t(cfs)
0.000 1. 012 0.000 0.000 0.000
0.100 1. 014 0.101 0.299 1.024
0.200 1. 016 0.203 0.423 1.026
0.300 1.018 0.305 0.518 1.029
0.400 1.020 0.407 0.598 1. 032
0.500 1.022 0.509 0.669 1. 035
0.600 1. 024 0.611 0.732 1. 037
. 0.700 1.026 0.713 0.791 1.040
0.800 1. 028 0.816 0.846 1. 043
0.900 1. 030 0.919 0.897 1. 046
1. 000 1. 032 1.022 0.946 1.048
1.100 1. 034 1. 125 0.992 1. 051
1.200 1.036 1.229 1.036 1. 054
1.300 1.038 1.332 1.078 1.057
1. 400 1. 040 1.436 1.119 1.060
1.500 1. 042 1.540 1. 158 1.062
1.600 1. 043 1.645 1.196 1. 065
1. 700 1. 045 1.749 1.233 1.068
1.800 1. 047 1.854 1. 269 1. 071
1.900 1.049 1. 959 1. 303 1.074
2.000 1. 051 2.064 1.337 1.076
2.100 1. 053 2.169 1.678 1.079
2.200 1. 055 2.274 2.273 1. 082
2.300 1.057 2.380 3.034 1. 085
2.400 1. 059 2.486 3.929 1.088
2.500 1. 061 2.592 4.938 1. 090
2.600 1. 063 2.698 6.051 1. 093
2.700 1. 065 2.804 7.257 1. 096
2.800 1. 067 2.911 8.551 1. 099
2.900 1. 069 3.018 9.925 1. 102
3.000 1.071 3.125 11. 38 1.105
ANALYSIS RESULTS
.
Flow Frequency
Return Period
2 year
5 year
10 year
25 year
50 year
Return Periods for Predeveloped
Flow (cfs)
o
o
o
o
o
LOG ITE-l\11
# . I'd
- '2
Pacr~ -- ---
.... '... '? ~ r.'_
--'-~ \'..'
.,. -'''' ;J,~J_J
r~r"D-~~-ifn ~i~-~"':Y
\1 --:l \\/
.'~~
JEFFERSON COUNTY
DEPT. OF COMMUNITY DEVELOPMENT
.
Flow Frequency Return
Return Period
2 year
5 year
10 year
25 year
50 year
100 year
Flow Frequency Return
Return Period
2 year
5 year
10 year
25 year
50 year
100 year
Periods for Developed Unmitigated
Flow (cfs)
0.559188
0.855569
1.058328
1.318287
1.513374
1. 708984
Periods for
Flow (cfs)
0.13182
0.171454
0.194952
0,222094
0.240745
0.258247
Developed ~tigated
Peaks for Predeveloped and Developed-~tigated
.
Yearly
Year
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
Predeveloped
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.849
0.000
0.000
0.000
0.000
0.000
0.000
0.000
.
Developed
0.154
0.147
0.157
0.067
0.157
0.173
0.182
0.118
0.140
0.101
0.151
0.150
0.141
0.089
0.110
0.155
0.103
0.094
0.170
0.110
0.083
0.125
0.205
0.235
0.140
0.055
0.138
0.132
0.091
0.103
0.227
0.110
0.193
0.154
0.133
0.081
0.220
0.199
0.146
0.127
0.111
0.092
0.157
0.134
0.076
'~".~ . ,,,~.~"_,~,'-'''''' -"".'.- ..~...^".._..__._~
~::\ IE If re n ~q r~ \R'\
~\ = :yl~_~ _~~l~
JEFFERSON COUNTY
DEPl OF COMMUNITY DEVELOPMENT
LOG ITEM
#- Cl
Page -Z-.? 0-&-(-
- --.
Ranked Yearly Peaks for Predeveloped and Developed-~tigated
Rank Predeveloped Developed
.
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
.
.
1/2 2 year to 50 year
Flow (CFS) Predev Final
0.0000 394464 0
0.0000 630 0
0.0000 581 0
0.0000 527 0
0.0000 483 0
0.0000 433 0
0.0000 392 0
0.0000 335 0
0.0000 288 0
0.0000 256 0
0.0000 230 0
0.0000 209 0
0.0000 193 0
0.0000 178 0
0.0000 160 0
0.0000 137 0
0.0000 124 0
0.0000 108 0
0.0000 97 0
8.0000 84 0
0.0000 73 0
8.0000 64 0
J.OOOO 53 0
J.OOOO 48 0
0.2/.73
0.2203
0.2051
0.1995
0.1927
0.1821
0.1727
0.1701
0.1572
0.1570
0.1568
0.1554
0.1544
0.1536
0.1513
0.1500
0.1469
0.1456
0.1410
0.1402
0.1398
0.1377
0.1342
o . 1330
0.1321
0.1272
0.1250
0.1185
0.1109
0.1101
0.1098
0.1097
0.1030
0.1027
0.1008
0.0940
0.0919
0.0908
0.0890
0.0827
0.0806
0.0764
0.0669
0.0555
Percentage
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
Pass/Fail
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
-_J
JEFFERSON COUNTY
DEPT. OF COMMUNiTY DEVELOPMENT
# LOG ITEM
Pa~2'vh
- o__Of)\
~
f' 'n:::\... .'.-.,' .....[~~ '''fr\rE' n i~"-' rr;"~n~'~~
. ~ .::::,,~..7 lh:. :";.' '~~.J L:::i I!' \ ,
I Li ' I ----"-----ll i \
I '\, 'U'.
r\\i I' I
..J U' MAY - 9 2005 lW
.
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
.
.
" n,",f"\(,,\
38
35
33
30
30
27
26
24
23
21
20
20
19
18
18
17
16
16
15
14
13
13
12
12
12
10
9
9
8
5
3
3
1
1
1
1
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
n
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
n
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
# LOG ITEM
Pa~
\J.... -';:::"/_ of )}
~
r. ~'::~."- [0 f'..."...'. r:....--. -11- n.".;"-"""'~._[';":'~~.'l
I r ",,\ ,...l if ......... ~ \ ~ (,' It.
'! !; S ':.,' I.;, l \; / . r;: f\ 1 ,
I U) r-'---~'_.''''-''-''::'_-- I \ 1\ i
If" II I'
I"; I; I
,U Ui MAY - 9 2005 il!:!J'
I l I
~ "'-~
JEFfERSON COUNTY -
OWL OF COMMUNITY DEVELOPMENT
n
.
.
.
0.0000
0.0000
o
o
.0
.0
Pass
Pass
o
o
Water Quality BMP Flow and Volume.
On-line facility volume: 0 acre-feet
On-line facility target flow: 0 cfs.
Adjusted for 15 min: 0 cfs.
Off-line facility target flow: 0 cfs.
Adjusted for 15 min: 0 cfs.
This program and accompanying documentation is provided 'as-is' without warranty of any kind. The entire risk regarc
the performance and results of this program is assumed by the user. Clear Creek Solutions and the Washington State
Department of Ecology disclaims all warranties, either expressed or implied, including but not limited to implied
warranties of program and accompanying documentation. In no event shall Clear Creek Solutions and/or the Washingtor
state Department of Ecology be liable for any damages whatsoever (including without limitation to damages for loss 01
business profits, loss of business information, business interruption, and the like) arising out of the use of, or
inability to use this program even if Clear Creek Solutions or the washington State Department of Ecology has been
advised of the possibility of such damages,
LOG ITEM
# l7
P~a(:\ 7'\:) (Jr~1
V'i\~""...<~.- """'~""'"""'""''''''~_"
r' ""~'. '''-. -.......... ."- .....-.'-'...'....'.-'- ~._~_.~
i '[ """'\ [S F' rr:; r ,\.\'7 ""lC: 1.""'\
I n \ L. \'1) ! c. :' r, ;,. I r'\ \
Ii. .! -"-,..::.:'~.:_....::......l- 1\ \ \ \
.".1 'LJ'
1 '\. , I
I\\i Ii
II LtI MAY - 9 2005 i l~)
I ! I
l ' ,.--..-. -..--.-..., - m.' __.J
IEfTERSC:N COUNTY
't'.-"IYl (-'e.. (:n"I'"j'" "v '','\It':1 OI~I.}E:N r
l_ . ~..' \-..' l -. ,_" I, . , L.,I ~ '._ ..I
... .---. ..- .,'- ---. ,-,-"-..-- -- .~-_.
.
.
.
TEAR FLOW (m)
160 .0000 --BE>8~OO,J: ,;'8"*: :.: :<<E'880"'?8E8~"2-,,""'_,":;.c,,~O""':'
Yearly Peaks for Predeveloped
YEAR flOW (m)
toO 5,057 ------
10 2.773
5 2.153
2 1.327
Yearly Peaks for developed W/O Pond
YEAR FLOW (m)
100 .4643 ---
:: :::: --- . (I ~
:" .2955 ~- ~ I II
..' .2465 -l-i\-~---t- I It ~r\UJll f'f,
, ~' 1~,-M-t I \ I
. .1743 -- ,-.- r '---- , ,--H
\ I '91j Il ~ t i i\ f., \i '\ ,I II
10.0 r
.'!!. 1.0
~
Q)
C)
"-
to
.r.
(j
III
o
10E-1
-',.:> ,:>(J(:..:~;<:.n,/<J{}'Y;(:::):)(lf:J)(~:X:!),:):::{X>:
:-.- . '-.":...:-"
,. ,', ^."":~,>>><,,.>>:.:;,c';<0l{5';:P f~~i~~ ~! (> IH; I;! ,
,,):.><>fX><.x"'^-""-' x Developed fvlitlgate
'x'
10E-2
1 10 20 30 405060 70 80 90 99
Cumulative Probability
Flow Frequency Chart
-
III
....
o
-
Q)
en
...
m
~
(,)
o
o
n PI f:deJE'lnlH'd
x Develnlletl with FatUity'
10E-5 10E-4 10E-3 10E-2 10E-'1
Percent Exceedin
Duration Graph
'10
LOG ITEM
# L,
r--..p-a-0(~~-" ~-'-.' "--nof:. ~~. ---"-'--1
r "'- '1t"' .. -, n ,-",'r' ~I r.:::'\
11,\'\ ['" ,I,,' ; \:~~'\\
: 1 ) f ~~_.~'~_.~-:~._-~-_.~_.- ..~~ i ~ \ \ ~
I' , . :! I
I . ~ '..... . ! l! ! l I
I:i;i MAY - 9 2005 jl!dJ'\'
I ! i
; l_,_.___.....__~~ __"~ ".. .._ _....3 I
l JEfrJ;C'1\) C(j'.AiY' I
__Dt~~r. O~~(~,~A,1L!'-!.~Y Df~LLO~
Appendix A
Sub-basin D
.
.
.
WESTERN WASHINGTON HYDROLOGY MODEL V2
PROJECT REPORT
Project Name:
Site Address:
City
Report Date
Gage
Data Start
Da ta End
(adj usted)
DBGC-Basin D
Cape George Road
Port Townsend, WA
5/2/2005
Port Angelis
1948
1993
Precip Scale: 0.80
PREDEVELOPED LAND USE
Basin
Flows To
GroundWater:
Land Use
TILL FOREST:
TILL GRASS:
IMPERVIOUS:
Basin 1 - Golf
Pond 1
No
Acres
8.5
29.3
1.9
Basin
Flows To
GroundWater:
Land Use
TILL FOREST:
Basin
Pond
No
2 - Res+Undev
1
Acres
9.5
DEVELOPED LAND USE
Basin Basin 1
Flows To Pond 1
GroundWater: No
Land Use
TILL FOREST:
TILL GRASS:
IMPERVIOUS:
Acres
8.5
29.3
1.9
LOG ITEM
# (7
Pag3_.3:2-- of.)(
Basin
Flows To
GroundWater:
Land Use
TILL FOREST:
TILL GRASS:
IMPERVIOUS:
Basin 2 - Res+Undev
Extender 1
No
;~'--'~"4,'l
~ '~~ , _ i
.. -'-l ii \ I
Ii. l!\
'I 1
; I ,,;' MAY - 9 2005 1l::!J
L 1_ -_._-~-----j
I I JU "fyeCN CClUrny i
['~:Pl S~:_C0W,'1Ut~!7Y O[Vf:LOI~rv'EN r
.. I
Ie
Acres
7.6
0.4
1.5
RCHRES (POND) INFORMATION pond exists in the predeveloped scenareo
Pond Name: Pond 1
Pond Type: Trapezoidal Pond
Pond Flows to : Point of Compliance
Pond Rain / Evap is activated.
.
Depth: 2ft.
Bottom Length: 94ft.
Bottom Width: 94ft.
Side slope 1: 3 To 1
Side slope 2: 3 To 1
Side slope 3: 3 To 1
Side slope 4: 3 To 1
Volume at Riser Head:
Discharge Structure
Riser Height: 1 ft.
Riser Diameter: 12 in.
.
Stage (ft)
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
0.900
1.000
1.100
1. 200
1.300
1.400
1. 500
1. 600
1.700
1.800
1.900
2.000
Pond Hydraulic
Area (acr) Volume (acr-ft)
0.203 0.000
0.205 0.020
0.208 0.041
0.211 0.062
0.213 0.083
0.216 0.105
0.219 0.126
0.221 0.148
0.224 0.171
0.227 0.193
0.230 0.216
0.232 0.239
0.235 0.263
0.238 0.286
0.241 0.310
0.244 0.334
0.246 0.359
0.249 0.384
0.252 0.409
0.255 0.434
0.258 0.460
0.216 acre-ft.
Table
Dschrg(cfs)
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.308
0.871
1. 600
2.464
3.443
4.526
5.704
6.969
8.315
9.739
Infilt(cfs)
0.000
0.207
0.210
0.213
0.216
0.219
0.221
0.224
0.227
0.230
0.233
0.236
0.239
0.242
0.245
0.248
0.251
0.254
0.257
0.260
0.263
Pond 1
Trapezoidal Pond
to : Pond 2
Evap is not activated.
Pond Name:
Pond Type:
Pond Flows
Pond Rain /
Dimensions
Depth: 2ft.
Bottom Length: 135ft.
Bottom Width: 160ft.
Side slope 1: 3 To 1
Side slope 2: 3 To 1
Side slope 3: 3 To 1
Side slope 4: 3 To 1
Volume at Riser Head:
Discharge Structure
Riser Height: 1 ft.
Riser Diameter: 12 in.
0.610 acre-ft.
Pond Hydraulic Table
Stage (ft) Area(acr) volume(acr-ft) Dschrg(cfs) Infilt(cfs)
0.000 0.588 0.000 0.000 0.000
0.100 0.592 0.059 0.000 0.597
0.200 0.597 0.118 0.000 0.602
0.300 0.601 0.178 0.000 0.607
0.400 0.605 0.239 0.000 0.611
0.500 0.610 0.299 0.000 0.616
0.600 0.614 0.361 0.000 0.621
. 0.700 0.619 0.422 0.000 0.626
0.800 0.623 0.484 0.000 0.631
0.900 0.628 0.547 0.000 0.635
1.000 0.633 0.610 0.000 0.640
1.100 0.637 0.673 0.308 0.645
1.200 0.642 0.737 0.871 0.650
1. 300 0.646 0.802 1.600 0.655
1.400 0.651 0.867 2.464 0.660
-~.-r~~\l
--' ,,, \;
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r- ~. '. 1 I (' .., ,- '.,' ~. .
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1.600 0.660 0.998 4.526 0.670
1.700 0.665 1. 064 5.704 0.675
1.800 0.670 1.131 6.969 0.680
1.900 0.674 1.198 8.315 0.685
2.000 0.679 1.266 9.739 0.690
.
Pond Name:
Pond Type:
Pond Flows
Pond Rain /
Dimensions
Depth: 3ft.
Bottom Length: 210ft.
Bottom Width: 210ft.
Side slope 1: 1 To 1
Side slope 2: 1 To 1
Side slope 3: 1 To 1
Side slope 4: 1 To 1
Volume at Riser Head:
Discharge Structure
Riser Height: 2 ft.
Riser Diameter: 12 in.
Orifice 1 Diameter: 6
.
stage (ft)
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
0.900
1.000
1. 100
1. 200
1.300
1. 400
1.500
1.600
1.700
1. 800
1. 900
2.000
2.100
2.200
2.300
2.400
2.500
2.600
2.700
2.800
2.900
3.000
Pond 2
Trapezoidal Pond
to : Point of Compliance
Evap is not activated.
2.064 acre-ft.
in.
Pond Hydraulic
Area (acr) Volume (acr-ft)
1.012 0.000
1. 014 0.101
1.016 0.203
1.018 0.305
1.020 0.407
1.022 0.509
1.024 0.611
1.026 0.713
1.028 0.816
1. 030 0.919
1. 032 1. 022
1. 034 1.125
1. 036 1. 229
1. 038 1. 332
1.040 1.436
1.042 1.540
1. 043 1. 645
1. 045 1. 749
1.047 1.854
1.049 1.959
1.051 2.064
1.053 2.169
1.055 2.274
1.057 2.380
1.059 2.486
1.061 2.592
1.063 2.698
1.065 2.804
1.067 2.911
1.069 3.018
1.071 3.125
Elevation:
Table
Dschrq(cfs)
0.000
0.299
0.423
0.518
0.598
0.669
0.732
0.791
0.846
0.897
0.946
0.992
1. 036
1. 078
1.119
1.158
1. 196
1. 233
1. 269
1.303
1.337
1. 678
2.273
3.034
3.929
4.938
6.051
7.257
8.551
9.925
11. 38
Oft.
Infilt(cfs)
0.000
1.024
1. 026
1. 029
1. 032
1.035
1. 037
1. 040
1.043
1.046
1.048
1. 051
1.054
1. 057
1.060
1. 062
1.065
1.068
1.071
1.074
1. 076
1. 079
1. 082
1. 085
1.088
1. 090
1. 093
1. 096
1. 099
1.102
1. 105
LOG ITEM
#
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- ! l
MAY - 9 2005 It
.
ANALYSIS RESULTS
Flow Frequency
Return Period
2 year
5 year
10 year
25 year
50 year
Return Periods for Predeveloped
Flow (cfs)
o
o
o
o
o
'..' i
,~_!J
,L\' i!'./t.J~!:'J Lj
...' J .\~
.
~low Frequency Return
~eturn Period
2 year
5 year
10 year
25 year
50 year
100 year
Periods for Developed Unmitigated
Flow (cfs)
0.559188
0.855569
1.058328
1.318287
1. 513374
1.708984
Flow Frequency Return
Return Period
2 year
5 year
10 year
25 year
50 year
100 year
Periods for Developed ~tigated
Flow (cfs)
0.060657
0.097211
0.128969
0.179381
0.225578
0.280265
Peaks for Predeveloped and Developed-~tigated
.
Yearly
Year
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
Predeveloped
1.107
0.729
0.276
0.000
0.000
1.705
1.727
0.476
0.806
0.000
0.600
1.111
1.446
0.000
0.327
0.363
0.306
0.000
1.406
0.000
0.000
0.079
1.903
2.608
0.988
0.178
0.162
0.299
0.000
0.000
0.000
1. 008
1. 380
1. 329
1.113
0.205
1. 665
2.221
0.863
0.240
0.269
0.465
1. 228
1. 133
0.079
.
Developed
0.069
0.065
0.069
0.030
0.069
0.223
0.092
0.052
0.062
0.045
0.067
0.071
0.146
0.039
0.049
0.069
0.046
0.042
0.112
0.049
0.037
0.055
0.103
0.124
0.062
0.024
0.061
0.059
0.040
0.046
0.100
0.049
0.086
0.074
0.066
0.036
0.105
0.439
0.068
0.057
0.049
0.041
0.095
0.068
0.034
~anked Yearly Peaks for Predeveloped and Developed-~tigated
~nk Predeveloped Developed
1 ? hnQA n 4~qA
i
H'. I.' ('
" .. -,
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, )) ._b_~_
I
-,~
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MAY - 9 2005
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LOG ITEM
#- -0
Pagel~ r-
- ,-)-.O(t I
--,-~-~
.
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
2.2210
1.9031
1.7269
1.7050
1.6655
1. 4464
1.4059
1.3798
1. 3290
1.2277
1.1328
1.1129
1. 1108
1.1072
1. 0077
0.9878
0.8625
0.8055
0.7289
0.6000
0.4761
0.4646
0.3631
0.3267
0.3059
0.2988
0.2762
0.2694
0.2404
0.2052
0.1779
0.1620
0.0790
0.0787
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
.
.
1/2 2 year to 50
Flow (CFS) Predev
0.0000 394464
0.0000 630
0.0000 581
0.0000 527
0.0000 483
0.0000 433
0.0000 392
0.0000 335
0.0000 288
0.0000 256
0.0000 230
0.0000 209
0.0000 193
0.0000 178
0.0000 160
0.0000 137
0.0000 124
0.0000 108
0.0000 97
0.0000 84
0.0000 73
0.0000 64
0.0000 53
0.0000 48
year
Final
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
0.2227
0.1456
0.1237
0.1116
0.1048
0.1025
0.1004
0.0946
0.0919
0.0857
0.0736
0.0705
0.0693
0.0692
0.0689
0.0687
0.0680
0.0680
0.0671
0.0657
0.0653
0.0622
0.0621
0.0608
0.0586
0.0565
0.0553
0.0524
0.0490
0.0489
0.0488
0.0486
0.0457
0.0455
0.0447
0.0416
0.0407
0.0401
0.0394
0.0366
0.0359
0.0340
0.0297
0.0245
Percentage
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
Pass/Fail
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
"
'~.,
'1
,
, '
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MAY - 9 2005
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, l ! j f I
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,
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. ~LC'I'iV\ti'J~j
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LOG ITEM
#- (;
p"'ln~ ::Jt
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---
0.0000 38 0 .0 Pass
0.0000 35 0 .0 Pass
0.0000 33 0 .0 Pass
0.0000 30 0 .0 Pass
0.0000 30 0 .0 Pass
0.0000 27 0 .0 Pass
. 0.0000 26 0 .0 Pass
0.0000 24 0 .0 Pass
0.0000 23 0 .0 Pass
0.0000 21 0 .0 Pass
0.0000 20 0 .0 Pass
0.0000 20 0 .0 Pass
0.0000 19 0 .0 Pass
0.0000 18 0 .0 Pass
0.0000 18 0 .0 Pass
0.0000 17 0 .0 Pass
0.0000 16 0 .0 Pass
0.0000 16 0 .0 Pass
0.0000 15 0 .0 Pass
0.0000 14 0 .0 Pass
0.0000 13 0 .0 Pass
0.0000 13 0 .0 Pass
0.0000 12 0 .0 Pass
0.0000 12 0 .0 Pass
0.0000 12 0 .0 Pass
0.0000 10 0 .0 Pass
0.0000 9 0 .0 Pass
0.0000 9 0 .0 Pass
0.0000 8 0 .0 Pass
0.0000 5 0 .0 Pass
0.0000 3 0 .0 Pass
0.0000 3 0 .0 Pass
0.0000 1 0 .0 Pass
0.0000 1 0 .0 Pass
0.0000 1 0 .0 Pass
. 0.0000 1 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass . '" , 1
0.0000 0 0 . 0 Pass '! "
..
0.0000 0 0 .0 Pass ,
i
0.0000 0 0 .0 Pass 11 i ,i;
0.0000 0 0 .0 Pass MAY -9 2005 II!)' i
. .. :I':':jl
. 0.0000 0 0 .0 Pass
0.0000 0 0 .0 Pass ...--.
0.0000 0 0 .0 Pass : _ it,'- r LIe .:!~ (~(~~'--~jl'\;- ~
0.0000 0 0 .0 Pass L'" i I: CLO(rll~EML ~or'IVll~~J
0.0000 0 0 .0 Pass
J.OOOO 0 0 .0 Pass # l.!:l
J.OOOO 0 0 .0 Pass
J.OOOO 0 0 .0 Pass Page~7_ofIJ_
I nnnn n n n P:::lOC
.
.
.
0.0000
0.0000
.0
.0
Pass
Pass
o
o
o
o
Water Quality BMP Flow and Volume.
On-line facility volume: 0 acre-feet
On-line facility target flow: 0 cfs.
Adjusted for 15 min: 0 cfs.
Off-line facility target flow: 0 cfs.
Adjusted for 15 min: 0 cfs.
This program and accompanying documentation is provided 'as-is' without warranty of any kind. The entire risk regar,
the performance and results of this program is assumed by the user. Clear Creek Solutions and the Washington State
Department of Ecology disclaims all warranties, either expressed or implied, including but not limited to implied
warranties of program and accompanying documentation. In no event shall Clear Creek Solutions and/or the Washingtol
State Department of Ecology be liable for any damages whatsoever (including without limitation to damages for loss 0
business profits, loss of business information, business interruption, and the like) arising out of the use of, or
inability to use this program even if Clear Creek Solutions or the Washington State Department of Ecology has been
advised of the possibility of such damages,
"'1
MAY - 9 2005
,I,
: 11
~ !..J !
LOG 'TE~"'fi.J
# If
Page~_ofS]
--
YEAR FLOW (m)
~60
-
.'/!. 1.0
. ()
-
Q)
e>
n:I 10E-1
.c
()
0
i5
Yearly Peaks for Predeveloped
YEAR flOW (tis)
'100 5,057 --:-
50 4,324
25 3,632
10 2.773
5 2,153
2 1,327
.
Yearly Peaks for developed W/O Pond
YEAR flOW (tis)
100 ,5815
50 ,4950
25 ,4163
10 ,3221
,2566
,1717
Yearly Peaks for Developed W/Pond
.
v;
't
-
~
0)
..
n:I
~
(,)
f/)
is
10.0
,;){>O()")')-:),)(;{:(]():x:<).y.:o~:ro):::(t;:;.():):)
.... (1 (100 t) t)
V
o
, *,,*~>>>'~<0'~~f~t(t~::;:IHHl
):)<)<;<;'()<):J<><X:<:x>>X x Developer Mitigate
)<x'
10E-2
1 10 20 30 405060 70 80 90 99
Cumulative Probability
Flow Frequency Chart
o PI edevelopeil
)( Oevelol;etl with Facility
10E-5 10E-4 10E-3 10E-2 10E-1 1
PercenfExceedin
Duration Graph
10
:~.':
-:i:: --(;::--:\1
~'-/ \'il
II
, '
MAY - 9 2005 ! :
\' :-/t.'i !
,
, ,ji'/ J
r'\ /' , .,_." ,r" -
" i r dr'Oo""r'll
'.:_. ~ 1,1 c. 'oj
LOG ITEM
# (7
Pag0~_~_Ot)\
Appendix A
Sub-basin E
.
.
.
WESTERN WASHINGTON HYDROLOGY MODEL V~
PROJECT REPORT
Project Name:
Site Address:
City
Report Date
Gage
Data Start
Data End
(adjusted)
DBGC Basin E
Cape George Road
Port Townsend, WA
5/2/2005
Port Angelis
1948
1993
Precip Scale: 0.80
PREDEVELOPED LAND USE
Basin
Flows To
GroundWater:
Land Use
TILL FOREST:
TILL GRASS:
IMPERVIOUS:
Basin 1
Pond 1
No
Acres
7.8
26.9
1.7
Basin
Flows To
GroundWater:
Land Use
TILL FOREST:
Basin
Pond
No
2 - Res+Undev
1
Acres
36.9
DEVELOPED
Basin
Flows To
GroundWater:
Land Use
TILL FOREST:
TILL GRASS:
IMPERVIOUS:
LAND USE
Basin
Pond
No
1
1
Acres
7.8
26.9
1.7
Basin
Flows To
GroundWater:
Land Use
TILL FOREST:
TILL GRASS:
IMPERVIOUS:
Basin 2 - Res+Undev
Extender 1
No
1
!
i\
Acres
30.1
2.7
4.1
MAY - 9 2005
;1
l,~~j
..-3
!t . ~
'~~. r ( "
OLJ~\:TY
~! i !~:"\- DFV[:LUPlv1ENf
in
the predeveloped scenareo LOG lYEI'll
# '7 .y,
Page..sf-~otl --
'Y.IOl.1..-'l""'-~.~_
RCHRES (POND) INFORMATION pond exists
Pond Name: Pond 1
Pond Type: Trapezoidal Pond
Pond Flows to : Point of Compliance
Pond Rain / Evap is activated.
Depth: 2ft.
Bottom Length: 160ft.
Bottom Width: 160ft.
Side slope 1: 3 To 1
Side slope 2: 3 To 1
Side slope 3: 3 To 1
Side slope 4: 0 To 1
Volume at Riser Head:
Discharge Structure
Riser Height: 1 ft.
Riser Diameter: 12 in.
.
.
Stage (ft)
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
0.900
1. 000
1. 100
1.200
1. 300
1.400
1.500
1.600
1.700
1.800
1.900
2.000
0.604 acre-ft.
Pond Hydraulic
Area (acr) Volume (acr-ft)
0.588 0.000
0.591 0.059
0.594 0.118
0.598 0.178
0.601 0.238
0.604 0.298
0.608 0.359
0.611 0.420
0.614 0.481
0.618 0.542
0.621 0.604
0.625 0.667
0.628 0.729
0.631 0.792
0.635 0.856
0.638 0.919
0.642 0.983
0.645 1.048
0.649 1.112
0.652 1.177
0.655 1.243
Table
Dschrg(cfs)
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.308
0.871
1.600
2.464
3.443
4.526
5.704
6.969
8.315
9.739
Infilt(cfs)
0.000
0.596
0.600
0.604
0.608
0.612
0.616
0.620
0.624
0.628
0.632
0.636
0.640
0.644
0.648
0.652
0.656
0.660
0.664
0.668
0.672
Pond 1
Trapezoidal Pond
to : Pond 2
Evap is not activated.
Pond Name:
Pond Type:
Pond Flows
Pond Rain /
Dimensions
Depth: 2ft.
Bottom Length: 160ft.
Bottom Width: 160ft.
Side slope 1: 3 To 1
Side slope 2: 3 To 1
Side slope 3: 3 To 1
Side slope 4: 3 To 1
Volume at Riser Head:
Discharge Structure
Riser Height: 1 ft.
Riser Diameter: 12 in.
.
stage (ft)
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
0.900
1. 000
1.100
1.200
1. 300
1.400
0.610 acre-ft.
Pond Hydraulic
Area (acr) Volume(acr-ft)
0.588 0.000
0.592 0.059
0.597 0.118
0.601 0.178
0.605 0.239
0.610 0.299
0.614 0.361
0.619 0.422
0.623 0.484
0.628 0.547
0.633 0.610
0.637 0.673
0.642 0.737
0.646 0.802
0.651 0.867
Table
Dschrg(cfs)
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.308
0.871
1. 600
2.464
Infilt(cfs)
0.000
0.597
0.602
0.607
0.611
0.616
0.621
0.626
0.631
0.635
0.640
0.645
0.650
0.655
0.660
,-- ,,'1
\ ,
MAY - 9 2005 ,I
-, '.", r!. ('qq;JlV JI ,
l 0 .., ill \/LLOPMEf~ r
- G ITEf\;f -- --'---
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Page_V./_Of2l-=-
1. 600 U.66U u. :1 'jtJ LI.JLO U.O/U
1.700 0.665 1.064 5.704 0.675
1. 800 0.670 1.131 6.969 0.680
1. 900 0.674 1.198 8.315 0.685
2.000 0.679 1.266 9.739 0.690
. Pond Name: Pond 2
Pond Type: Trapezoidal Pond
Pond Flows to : Point of Compliance
Pond Rain / Evap is not activated.
Dimensions
Depth: 3ft.
Bottom Length: 210ft.
Bottom Width : 210ft .
Side slope 1: 1 To 1
Side slope 2: 1 To 1
Side slope 3: 1 To 1
Side slope 4: 1 To 1
Volume at Riser Head: 2.064 acre-ft.
Discharge Structure
Riser Height: 2 ft.
Riser Diameter: 12 in.
Orifice 1 Diameter: 6 in. Elevation: 0 ft.
Pond Hydraulic Table
Stage (ft) Area (acr) Vo1.ume(acr-ft) Dschrg(cfs) Infilt(cfs)
0.000 1. 012 0.000 0.000 0.000
0.100 1. 014 0.101 0.299 1. 024
0.200 1. 016 0.203 0.423 1.026
0.300 1. 018 0.305 0.518 1. 029
0.400 1.020 0.407 0.598 1. 032
0.500 1.022 0.509 0.669 1. 035
0.600 1. 024 0.611 0.732 1.037
. 0.700 1.026 0.713 0.791 1. 040
0.800 1. 028 0.816 0.846 1.043
0.900 1. 030 0.919 0.897 1.046
1. 000 1. 032 1.022 0.946 1.048
1. 100 1. 034 1. 125 0.992 1. 051
1. 200 1. 036 1. 229 1. 036 1. 054
1. 300 1. 038 1. 332 1.078 1.057
1. 400 1. 040 1. 436 1.119 1.060
1. 500 1. 042 1.540 1.158 1. 062
1. 600 1.043 1. 645 1.196 1.065
1.700 1. 045 1.749 1. 233 1. 068
1.800 1.047 1. 854 1.269 1.071
1.900 1.049 1. 959 1.303 1.074
2.000 1. 051 2.064 1. 337 1.076
2.100 1.053 2.169 1.678 1. 079
2.200 1.055 2.274 2.273 1. 082
2.300 1. 057 2.380 3.034 1. 085
2.400 1. 059 2.486 3.929 1. 088
2.500 1.061 2.592 4.938 1.090
2.600 1.063 2.698 6.051 1. 093
2.700 1. 065 2.804 7.257 1.096
2.800 1.067 2.911 8.551 1. 099
2.900 1.069 3.018 9.925 1.102
3.000 1.071 3.125 11.38 1.105
ANALYSIS RESULTS
.
Flow Frequency Return
Return Period
2 yea~
5 year
10 year
25 year
50 year
Periods for
Flow (cfs)
o
o
o
o
o
Predeveloped
,1
, I
I,
MAY - 9 2005
LOG ITEM
# II
Page ~2...- of Yl
I
J
.
Flow Frequency Return
Return Period
2 year
5 year
10 year
25 year
50 year
100 year
Flow Frequency Return
Return Period
2 year
5 year
10 year
25 year
50 year
100 year
Periods for Developed Unmitigated
Flow (cfs)
1. 327159
2.15337
2.773268
3.63212
4.323643
5.057456
Periods for Developed ~tigated
Flow (cfs)
0.171732
0.256587
0.322149
0.416286
0.495031
0.581519
Peaks for Predevelopedand Developed-~tigated
.
Yearly
Year
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
Predeveloped
0.000
0.000
0.000
0.000
0.000
1. 326
0.885
0.000
0.000
0.000
0.000
0.781
1.121
0.000
0.000
0.000
0.000
0.000
0.899
0.000
0.000
0.000
0.000
1. 002
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.299
0.000
0.270
0.289
0.000
0.341
2.456
0.172
0.000
0.000
0.000
1. 003
0.598
0.000
.
Developed
0.198
0.186
0.189
0.083
0.189
0.275
0.291
0.144
0.173
0.125
0.202
0.217
0.229
0.109
0.140
0.194
0.132
0.114
0.263
0.133
0.104
0.153
0.344
0.387
0.181
0.067
0.166
0.168
0.110
0.125
0.275
0.146
0.247
0.240
0.206
0.103
0.330
0.814
0.211
0.160
0.134
0.113
0.232
0.226
0.097
Ranked Yearly Peaks for Predeveloped and Developed-~tigated
Rank Predeveloped Developed
--"""".
c ........_...__.._
~~.- 'r;:-"~"1
, . i
. ' ,
~.~\
, I
!' .,/-
--"
I.'
, ,
MAY - 9 2005 Ii;; I
;' -' I
L' , - r~bd~i ~'tEMrCf~~~,~J
# tJ
Page$_o(Y-j
---"",p.
2
3
~
:)
6
1. 3261
1. 1211
1.0026
1.0019
0.8991
0.8853
0.7814
0.5980
0.3413
0.2995
0.2890
0.2701
0.1723
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
.
7
3
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
.
.
1/2 2 year to 50 year
Flow (CFS) Predev Final
0.0000 394464 0
0.0000 630 0
0.0000 581 0
0.0000 527 0
0.0000 483 0
0.0000 433 0
0.0000 392 0
0.0000 335 0
0.0000 288 0
0.0000 256 0
0.0000 230 0
0.0000 209 0
0.0000 193 0
0.0000 178 0
0.0000 160 0
0.0000 137 0
0.0000 124 0
0.0000 108 0
0.0000 97 0
0.0000 84 0
0.0000 73 0
0.0000 64 0
0.0000 53 0
0.0000 48 0
;,.
LOG'-,TEMi ':~~\~!;~:cj
# 11
Page-S:f.::f_of ,),
U.j(jIL
0.3439
0.3297
0.2908
0.2753
0.2750
0.2631
0.2473
0.2405
0.2317
0.2287
0.2259
0.2170
0.2113
0.2056
0.2016
0.1985
0.1940
0.1894
0.1890
0.1856
0.1806
0.1732
0.1676
0.1662
0.1595
0.1529
0.1460
0.1440
0.1398
0.1338
0.1329
0.1315
0.1251
0.1246
0.1144
0.1132
0.1096
0.1092
0.1036
0.1031
0.0968
0.0826
0.0669
Percentage
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
Pass/Fail
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
MAY - 9 2005
....
n......~......
,1
i
i!
0.0000
0.0000
o
o
o
o
.0
.0
Pass
Pass
Water Quality BMP Flow and Volume.
On-line facility volume: 0 acre-feet
On-line facility target flow: 0 cfs.
~justed for 15 min: 0 cfs,
~ff-line facility target flow: 0 cfs.
Adjusted for 15 min: 0 cfs.
This program and accompanying documentation is provided 'as-is' without warranty of any kind. The entire risk regardin,
the performance and results of this program is assumed by the user, Clear Creek Solutions and the Washington State
Department of Ecology disclaims all warranties, either expressed or implied, including but not limited to implied
warranties of program and accompanying documentation. In no event shall Clear Creek Solutions and/or the Washington
State Department of Ecology be liable for any damages whatsoever (including without limitation to damages for loss of
business profits, loss of business information, business interruption, and the like) arising out of the use of, or
inability to use this program even if Clear Creek Solutions or the washington State Department of Ecology has been
advised of the possibility of such damages.
.
~l
, I
) -\ I
; t.! '~l
MAY - 9 2005
i
I
.
I
I
,
i. ~_
t .:f!i~' ri\" l.C\ f~ifY~" ;
LUL~..:.:...(.I,: (() jl;/Ur;'~;' [j 'Jf !Of:lv'itN~J
LOG ITEM
# (~
P::>n'"\ t l.r . 'f
_'-=-"u"~_J_ 0 . ~l
-.'.~,
YEAR fLOw (m)
100 1.193
.
25 ,6659
10 ,4139
.2650
ri
, ~ \
L I
- - ~I
2 ,1129
Yearly Peaks for Predeveloped
lEAR FLOW (tis)
.
960 .0000
Yearly Peaks for developed W/O Pond
YEAR flOW (tis)
960 ,??oo
Yearly Peaks for Developed WIPond
.
10.0 : )< x >:J<;< >;X:XXiO<>W'n'>>:_:>-,;(>(XX)<X<)<):J<X:X:X>< >: ;<)0:
-
$. 1.0
o
-
Q)
0)
'"
~ 10E-1
(,)
If)
i5
Or)
OC<,O(..(3r)O.......
c<lP:;(b P,edevelol>ed
, #p:-<; x Developer . Miti~late
, ,,()')(f,/]OP[J;:'~
ovov
(>
10E-2
1
10 20 30 405060 70 80 90 99
Cumulative Probability
Flow Frequency Chart
O.!l'l '
o P!.f;I.l4;>Ve!c'j)('I!. . .
x Develol)ed with Faciiity
0.69
-
-t 0.48
-
Q)
C)
:; 0.27 .---....... .. ---....,..,.-.---....'... ..,.'.,. -.-.--. ..oo.....-...-.-."
J;
(,)
.!!
Q
0.06 ...--.,........-.' ..,.,._,..,........'....,.....,..,...,...... ..,..oo'....,'.' ,.
10E-5 J 10E-4 'IOE-3 10E-2 'IOE.1 1 10
Percent. Exceedin
Duration Graph
MAY - 9 2005
~
L.....,___..
LOG ITEM
#- (,
P~n'~,;) (_ -
""ci'" -If..:f.- ofJ l
D6C:iC.
13,*-"" / 11'F
1
I
,
i
/1
~",r J
.
Appendix A
Sub-basin F
WESTERN WASHINGTON HYDROLOGY MODEL V2
PROJECT REPORT
.
Project Name:
Site Address:
City
Report Date
Gage
Data Start
Da ta End
(adjusted)
DBGC-Basin F
Cape George Road
Port Townsend, WA
4/24/2005
Port Angelis
1948
1993
Precip Scale: 0.80
PRE DEVELOPED LAND USE
Basin
Flows To
GroundWater:
Land Use
TIU FOREST:
TILL GRASS:
Basin F
Point of Compliance
No
Acres
14.73
3
Standard residential land areas:
Soil Type Lot Acres Number of Lots
Outwash 0.000 0
Till 0.000 0
Saturated 0.000 0
Flow Credits:
Soil Type Infiltrate Disperse Porous Pavement
Ou twash 0 0 0
. Till 100 0
Sa turated 0 0
DEVELOPED
Basin
Flows To
GroundWater:
Land Use
TILL FOREST:
TILL GRASS:
IMPERVIOUS:
Standard
Soil Type
Outwash
Till
\ Saturated
Flow
Soil Type
Outwash
Till
Saturated
LAND USE
Basin
Pond
No
F
3
Acres
11
5.862258
0.567742
residential land
Lot Acres
0.000
6.000
0.000
Credi ts :
Infiltrate
o
areas:
Number of Lots
o
6
o
Porous Pavement
o
Disperse
o
100
o
o
o
.
RCHRES (POND) INFORMATION
I?ond Name: Pond 3
I?ond Type: Trapezoidal Pond
I?ond Flows to : Point of Compliance
I?ond Rain / Evap is not activated.
)imensions
, 1
i
( ;
MAY - 9 2005
: I
,I: :
i .. / I
L -..'_~~:;
"
i
"'II ....",- J
' ~ ~ )\ i ~ .... " i.
- '", . ~
, "
"," 1_,' I
LOG ITEM
# (]
Page~.J of51
- .......----.......
Bottom Length: 100ft .
Bottom Width : 40ft .
Side slope 1: 3 To 1
Side slope 2: 3 To 1
Side slope 3: 3 To 1
Side slope 4: 3 To 1
. Vo1ume at Riser Head: 0.000 acre-ft.
Discharge Structure
Riser Height: 0 ft.
Riser Diameter: 0 in.
Pond Hydraulic Table
stage (ft) Area (acr) Volume (acr-ft) Dschrg(cfs) Infilt(cfs)
0.000 0.092 0.000 0.000 0.000
0.100 0.094 0.009 0.000 0.047
0.200 0.096 0.019 0.000 0.048
0.300 0.098 0.028 0.000 0.049
0.400 0.100 0.038 0.000 0.050
0.500 0.102 0.048 0.000 0.052
0.600 0.104 0.059 0.000 0.053
0.700 0.106 0.069 0.000 0.054
0.800 0.108 0.080 0.000 0.055
0.900 0.1l0 0.091 0.000 0.056
1.000 0.1l2 0.102 0.000 0.057
1.100 0.114 0.113 0.000 0.058
1. 200 0.116 0.125 0.000 0.059
1.300 0.118 0.136 0.000 0.060
1.400 0.120 0.148 0.000 0.062
1. 500 0.123 0.160 0.000 0.063
1.600 0.125 0.173 0.000 0.064
1.700 0.127 0.185 0.000 0.065
1.800 0.129 0.198 0.000 0.066
1.900 0.131 0.211 0.000 0.067
2.000 0.134 0.224 0.000 0.069
2.100 0.136 0.238 0.000 0.070
. 2.200 0.138 0.252 0.000 0.071
2.300 0.141 0.266 0.000 0.072
2.400 0.143 0.280 0.000 0.073
2.500 0.145 0.294 0.000 0.075
2.600 0.148 0.309 0.000 0.076
2.700 0.150 0.324 0.000 0.077
2.800 0.152 0.339 0.000 0.078
2.900 0.155 0.354 0.000 0.080
3.000 0.157 0.370 0.000 0.081
ANALYSIS RESULTS
Flow Frequency Return
Return Period
2 year
5 year
10 year
25 year
50 year
100 year
Periods for Predeveloped
Flow (cfs)
0.1l2942
0.265029
0.413932
0.665918
0.905342
1.193432
.
Flow Frequency Return
Return Period
2 year
5 year
10 year
25 year
50 year
100 year
Periods for Developed Mitigated
Flow (cfs)
o
o
o
o
o
o
Yearly Peaks for Predeveloped and Developed-Mitigated
Year ~redeveloped Developed
~l
l
,
MAY - 9 2005
! Ii
j' I
f\.
'Ii
.~
-",r i
,"I 'H',..q",,!,..JI
.'. ;1.1/ L.t". I
_.,_.,,_.,~
"
# LOG ITEM
Pa~.nl~
~.., f
- ,__o~) (
'-r""",_,~,
.
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
0.174
0.115
0.031
0.035
0.365
0.363
0.097
0.188
0.036
0.218
0.304
0.315
0.053
0.075
0.086
0.060
0.054
0.342
0.067
0.047
0.046
0.824
0.625
0.098
0.044
0.066
0.092
0.034
0.016
0.010
0.171
0.133
0.345
0.231
0.050
0.410
0.632
0.231
0.076
0.072
0.139
0.289
0.307
0.042
.
....
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
.
Ranked Yearly Peaks for
Rank Predeveloped
1 0.8245
2 0.6316
3 0.6254
4 0.4096
5 0.3651
6 0.3631
7 0.3451
8 0.3425
9 0.3146
10 0.3069
11 0.3037
12 0.2888
13 0.2313
14 0.2310
15 0.2178
16 0.1880
17 0.1737
18 0.1712
19 0.1386
20 0.1328
21 0.1148
22 0.1023
23 0.0980
24 0.0967
Predeveloped and Developed-~tigated
Developed
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
1
I
I
I,
I
!" ,; t'cq~~~_iJ
MAY - 9 2005
~ I ~ I I
LOG ITEM
# (.:)
Pag:3 ~:L7_of.s-L
26 0.0864 0.0000
27 0.0759 0.0000
28 0.0747 0.0000
29 0.0725 0.0000
30 0.0665 0.0000
31 0.0664 0.0000
. 32 0.0595 0.0000
33 0.0537 0.0000
34 0.0527 0.0000
35 0.0496 0.0000
36 0.0466 0.0000
37 0.0460 0.0000
38 0.0436 0.0000
39 0.0425 0.0000
40 0.0356 0.0000
41 0.0351 0.0000
42 0.0336 0.0000
43 0.0314 0.0000
44 0.0157 0.0000
45 0.0102 0.0000
1/2 2 year to 50
Flow (CFS) Predev
0.0565 0
0.0650 0
0.0736 0
0.0822 0
0.0908 0
0.0993 0
0.1079 0
0.1165 0
0.1251 0
0.1336 0
0.1422 0
. 0.1508 0
0.1594 0
0.1679 0
0.1765 0
0.1851 0
0.1937 0
0.2022 0
0.2108 0
0.2194 0
0.2280 0
0.2365 0
0.2451 0
0.2537 0
0.2623 0
0.2708 0
0.2794 0
0.2880 0
0.2966 0
0.3051 0
0.3137 0
0.3223 0
0.3309 0
0.3394 0
0.3480 0
0.3566 0
0.3652 0
0.3737 0
0.3823 0
0.3909 0
.0.3994 0
0.4080 0
0.4166 0
0.4252 0
0.4337 0
0.4423 0
0.4509 0
0.4595 0
year
Final
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
Percentage
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
rI
Pass/Fail
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
LOG ITEM
P# L7_
"'.1"Y(':li S ."
(;Iv...., ~ ('*;,
.;;I ___,",.... Q:\",."
0.4766 0 0 .0 Pass
0.4852 0 0 .0 Pass
0.4938 0 0 .0 Pass
0.5023 0 0 .0 Pass
0.5109 0 0 .0 Pass
0.5195 0 0 .0 Pass
.0.5281 0 0 .0 Pass
0.5366 0 0 .0 Pass
0.5452 0 0 .0 Pass
0.5538 0 0 .0 Pass
0.5624 0 0 .0 Pass
0.5709 0 0 .0 Pass
0.5795 0 0 .0 Pass
0.5881 0 0 .0 Pass
0.5967 0 0 .0 Pass
0.6052 0 0 .0 Pass
0.6138 0 0 .0 Pass
0.6224 0 0 .0 Pass
0.6310 0 0 .0 Pass
0.6395 0 0 .0 Pass
0.6481 0 0 .0 Pass
0.6567 0 0 .0 Pass
0.6653 0 0 .0 Pass
0.6738 0 0 .0 Pass
0.6824 0 0 .0 Pass
0.6910 0 0 .0 Pass
0.6996 0 0 .0 Pass
0.7081 0 0 .0 Pass
0.7167 0 0 .0 Pass
0.7253 0 0 .0 Pass
0.7339 0 0 .0 Pass
0.7424 0 0 .0 Pass
0.7510 0 0 .0 Pass
0.7596 0 0 .0 Pass
0.7682 0 0 .0 Pass
..7767 0 0 .0 Pass
.7853 0 0 .0 Pass
0.7939 0 0 .0 Pass
0.8024 0 0 .0 Pass
0.8110 0 0 .0 Pass
0.8196 0 0 .0 Pass
0.8282 0 0 .0 Pass
0.8367 0 0 .0 Pass
0.8453 0 0 .0 Pass
0.8539 0 0 .0 Pass
0.8625 0 0 .0 Pass
0.8710 0 0 .0 Pass
0.8796 0 0 .0 Pass
0.8882 0 0 .0 Pass
0.8968 0 0 .0 Pass
0.9053 0 0 .0 Pass
0.1
ii 'c.j, MAY - 9 2005 ilo.J;'
liJ,,~:~[~..";fr,C 1U~lr~~:'fJ
iiater Quality BMP Flow and Volume.
On-line facility volume: 0 acre-feet
On-line facility target flow: 0 cfs.
~djusted for 15 min: 0 cfs.
Jff-line facility target flow: 0 cfs.
~justed for 15 min: 0 cfs.
rhis program and accompanying documentation is provided 'as~is' without warranty of any kind. The entire risk regardin~
:he performance and results of this program is assumed by the user, Clear Creek Solutions and the Washington State
Jepartment of Ecology disclaims all warranties, either expressed or implied, including but not limited to implied
Narranties of program and accompanying documentation. In no event shall Clear Creek Solutions and/or the Washington
3tate Department of Ecology be liable for any damages whatsoever (including without limitation to damages for loss of
)usiness profits, loss of business information, business interruption, and the like) arising out of the use of, or
Lnability to use this program even if Clear Creek Solutions or the Washington State Department of Ecology has been
idvised of the possibility of such damages.
.
LOG ITEM
# D.
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