24-100051-SU-CN Bilovil-R-Preliminary TIR 01.29.2024
PRELIMINARY TECHNICAL INFORMATION REPORT
______________________________________________________________
Bilovil Short Plat
36XXX 6 th Avenue SW
Federal Way, WA 98023
Prepared For:
Mykhaylo Bilovil
506 SW 366th St
Federal Way, WA 98023
1/20/23
Date: January 20, 2023
______________________________________________________________
4625 – 126th Avenue East, Edgewood, WA 98372 (206) 450-5096
www.tebaldiengineering.com
TABLE OF CONTENTS
1.0 PROJECT OVERVIEW
Figure 1 – Technical Information Report (TIR) Worksheet
Figure 2 – Vicinity Map
2.0 CONDITIONS AND REQUIREMENTS SUMMARY
2.1 Analysis of the Core Requirements
2.2 Analysis of the Special Requirements
3.0 OFF-SITE ANALYSIS
Figure 3 – Downstream Map
4.0 FLOW CONTROL, LOW IMPACT DEVELOPMENT (LID) AND WATER QUALITY FACILITY ANALYSIS AND
DESIGN
A. Existing Site Hydrology
Figure 4 – Soils
B. Developed Site Hydrology
C. Performance Standards
D. Flow Control System
E. Water Quality System
5.0 CONVEYANCE SYSTEM ANALYSIS AND DESIGN
6.0 SPECIAL REPORTS AND STUDIES
7.0 OTHER PERMITS
8.0 CSWPP ANALYSIS AND DESIGN
9.0 BOND QUANTITIES, FACILITY SUMMARIES, AND DECLARATION OF COVENANT
10.0 OPERATIONS AND MAINTENANCE MANUAL
Appendix A - Soils Evaluation prepared by Westside Septic dated December 10, 2018
Appendix B - WWHM Calculations
1.0 PROJECT OVERVIEW
The project is located in the City of Federal Way at 35XXX 6th Avenue SW, Federal Way, WA on tax parcel
number 3021049155. More specifically, the project is located in Section 31, Township 21 North, Range
4 East, Willamette Meridian, King County, Washington. The project proposes subdivide the existing
parcels into 2 total lots. An area table has been provided below in this section. The 0.73 -acre property
is bound by single -family residences to the north and east with SW 366th Street to the south and
6thAveue SW to the west. The existing topography varies from approximately 0 to 40 percent and the
site generally falls from northwest to southeast. The vegetation on the project site consists of existing
forest with some pasture. In the existing condition, runoff from the project area sheet flows to the
southeast to the existing storm system in SW 366th Street. Runoff in the developed condition will be
handled through the use of infiltration to the maximum extent feasible. Where in filtration is infeasible,
dispersion will be utilized.
There are no known critical areas on the subject property .
Area Summary
Pre-Developed Developed
Parcel Area 31,986 SF 31,986 SF
Project Area (clearing limits) 30,083 SF 30,083 SF
Pervious 28,406 SF 13,031 SF
On-site approx. Clearing - 14,000 SF
Driveway (PGIS) – Onsite * - 2,000 SF
Roof ** - 6,000 SF
Total Onsite Impervious - 8,000 SF
Frontage Improvements 1,677 SF 9,052 SF
Total Offsite Impervious 1,677 SF 9,052 SF
Total Impervious 1,677 SF 17,052 SF
*Assumes 1,000 SF per lot
**Assumes 4,000 SF per lot max. to dispersion
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
Part 1 PROJECT OWNER AND
PROJECT ENGINEER Part 2 PROJECT LOCATION AND
DESCRIPTION
Project Owner ___________________________
Phone _________________________________
Address _______________________________
_______________________________________
Project Engineer _________________________
Company ______________________________
Phone _________________________________
Project Name _________________________
DPER Permit # ________________________
Location Township ______________
Range ________________
Section ________________
Site Address __________________________
_____________________________________
Part 3 TYPE OF PERMIT APPLICATION Part 4 OTHER REVIEWS AND PERMITS
Landuse (e.g.,Subdivision / Short Subd. / UPD)
Building (e.g.,M/F / Commercial / SFR)
Clearing and Grading
Right-of-Way Use
Other _______________________
DFW HPA
COE 404
DOE Dam Safety
FEMA Floodplain
COE Wetlands
Other ________
Shoreline
Management
Structural
Rockery/Vault/_____
ESA Section 7
Part 5 PLAN AND REPORT INFORMATION
Technical Information Report Site Improvement Plan (Engr. Plans)
Type of Drainage Review
(check one):
Date (include revision
dates):
Date of Final:
Full
Targeted
Simplified
Large Project
Directed
__________________
__________________
__________________
Plan Type (check
one):
Date (include revision
dates):
Date of Final:
Full
Modified
Simplified
__________________
__________________
__________________
Part 6 SWDM ADJUSTMENT APPROVALS
Type (circle one): Standard / Experimental / Blanket
Description: (include conditions in TIR Section 2)
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
Approved Adjustment No. ______________________ Date of Approval: ______________________
2016 Surface Water Design Manual 4/24/2016
1
Mykhaylo Bilovil
506 SW 366th St
Federal Way, WA 98023
Chris Tebaldi, P.E.
206-450-5096
Bilovil Short Plat
1/20/23 1/20/23
Tebaldi Engineering, LLC 35XXX 6th Ave SW
Federal Way, WA 98023
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
Part 7 MONITORING REQUIREMENTS
Monitoring Required: Yes / No
Start Date: _______________________
Completion Date: _______________________
Describe: _________________________________
_________________________________________
_________________________________________
Re: KCSWDM Adjustment No. ________________
Part 8 SITE COMMUNITY AND DRAINAGE BASIN
Community Plan : ____________________________________________________________________
Special District Overlays: ______________________________________________________________
Drainage Basin: _____________________________________________________________________
Stormwater Requirements: ____________________________________________________________
Part 9 ONSITE AND ADJACENT SENSITIVE AREAS
River/Stream ________________________
Lake ______________________________
Wetlands ____________________________
Closed Depression ____________________
Floodplain ___________________________
Other _______________________________
_______________________________
Steep Slope __________________________
Erosion Hazard _______________________
Landslide Hazard ______________________
Coal Mine Hazard ______________________
Seismic Hazard _______________________
Habitat Protection ______________________
_____________________________________
Part 10 SOILS
Soil Type
_________________
_________________
_________________
_________________
Slopes
_________________
_________________
_________________
_________________
Erosion Potential
_________________
_________________
_________________
_________________
High Groundwater Table (within 5 feet)
Other ________________________________
Sole Source Aquifer
Seeps/Springs
Additional Sheets Attached
2016 Surface Water Design Manual 4/24/2016
2
ALDERWOOD 0-6%
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
Part 11 DRAINAGE DESIGN LIMITATIONS
REFERENCE
Core 2 – Offsite Analysis_________________
Sensitive/Critical Areas__________________
SEPA________________________________
LID Infeasibility________________________
Other________________________________
_____________________________________
LIMITATION / SITE CONSTRAINT
_______________________________________
_______________________________________
_______________________________________
_______________________________________
_______________________________________
_______________________________________
Additional Sheets Attached
Part 12 TIR SUMMARY SHEET (provide one TIR Summary Sheet per Threshold Discharge Area)
Threshold Discharge Area:
(name or description)
Core Requirements (all 8 apply):
Discharge at Natural Location Number of Natural Discharge Locations:
Offsite Analysis Level: 1 / 2 / 3 dated:__________________
Flow Control (include facility
summary sheet)
Level: 1 / 2 / 3 or Exemption Number ____________
Flow Control BMPs _______________________________
Conveyance System Spill containment located at: _________________________
Erosion and Sediment Control /
Construction Stormwater
Pollution Prevention
CSWPP/CESCL/ESC Site Supervisor: _____________________
Contact Phone: _________________________
After Hours Phone: _________________________
Maintenance and Operation
Responsibility (circle one): Private / Public
If Private, Maintenance Log Required: Yes / No
Financial Guarantees and
Liability
Provided: Yes / No
Water Quality (include facility
summary sheet)
Type (circle one): Basic / Sens. Lake / Enhanced Basic / Bog
or Exemption No. ______________________
Landscape Management Plan: Yes / No
Special Requirements (as applicable):
Area Specific Drainage
Requirements
Type: CDA / SDO / MDP / BP / LMP / Shared Fac. / None
Name: ________________________
Floodplain/Floodway Delineation Type (circle one): Major / Minor / Exemption / None
100-year Base Flood Elevation (or range): ______________
Datum:
Flood Protection Facilities Describe:
2016 Surface Water Design Manual 4/24/2016
3
Bilovil
1
Infiltration/Dispersion
Sediment Control Structure
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
Part 12 TIR SUMMARY SHEET (provide one TIR Summary Sheet per Threshold Discharge Area)
Source Control
(comm ercial / industrial land use)
Describe land use:
Describe any structural controls:
Oil Control
High-use Site: Yes / No
Treatment BMP: ________________________________
Maintenance Agreement: Yes / No
with whom? ____________________________________
Other Drainage Structures
Describe:
Part 13 EROSION AND SEDIMENT CONTROL REQUIREMENTS
MINIMUM ESC REQUIREMENTS
DURING CONSTRUCTION
Clearing Limits
Cover Measures
Perimeter Protection
Traffic Area Stabilization
Sediment Retention
Surface Water Collection
Dewatering Control
Dust Control
Flow Control
Protection of Flow Control BMP Facilities
(existing and proposed)
Maintain BMPs / Manage Project
MINIMUM ESC REQUIREMENTS
AFTER CONSTRUCTION
Stabilize exposed surfaces
Remove and restore Temporary ESC Facilities
Clean and remove all silt and debris, ensure
operation of Permanent Facilities, restore
operation of Flow Control BMP Facilities as
necessary
Flag limits of SAO and open space preservation
areas
Other ______________________
Part 14 STORMWATER FACILITY DESCRIPTIONS (Note: Include Facility Summary and Sketch)
Flow Control Type/Description Water Quality Type/Description
Detention
Infiltration
Regional Facility
Shared Facility
Flow Control BMPs
Other
________________
________________
________________
________________
________________
________________
Vegetated Flowpath
Wetpool
Filtration
Oil Control
Spill Control
Flow Control BMPs
Other
________________
________________
________________
________________
________________
________________
________________
2016 Surface Water Design Manual 4/24/2016
4
KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL
TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
Part 15 EASEMENTS/TRACTS Part 16 STRUCTURAL ANALYSIS
Drainage Easement
Covenant
Native Growth Protection Covenant
Tract
Other ___________________________
Cast in Place Vault
Retaining Wall
Rockery > 4’ High
Structural on Steep Slope
Other ______________________________
Part 17 SIGNATURE OF PROFESSIONAL ENGINEER
I, or a civil engineer under my supervision, have visited the site. Actual site conditions as observed were
incorporated into this worksheet and the attached Technical Information Report. To the best of my
knowledge the information provided here is accurate.
Signed/Date
2016 Surface Water Design Manual 4/24/2016
5
1/20/23
2.0 CONDITIONS AND REQUIREMENTS SUMMARY
2.1 Analysis of the Core Requirements
Core Requirement No. 1: Discharge at the Natural Location.
Response: The existing site currently sheet flows to the east to the storm drainage system in SW 366th
Street. Runoff in the developed condition will be infiltrated and/or dispersed to the existing storm
drainage system.
Core Requirement No. 2: Off -Site Analysis.
Response: A downstream analysis has been completed. See section 3.0 of this report.
Core Requireme nt No. 3: Flow Control.
Response: Flow control requirement thresholds have not been exceeded in accordance with the 2021
King County Surface Water Design Manual (KCSWDM). See section 4.0.
Core Requirement No. 4: Conveyance System.
Response: The prop osed conveyance system has been designed to convey the 100-year design storm.
Please refer to Section 5.0 for calculations.
Core Requirement No. 5: Construction Stormwater Pollution Prevention .
Response: Temporary erosion control measures for this pro ject include stabilized construction
entrance, perimeter runoff control; cover practices of the disturbed areas and construction sequence.
Core Requirement No. 6: Maintenance and Operations.
Response: The drainage facilities for this project will be privately maintained and have been designed in
accordance with the 2021 KCSWDM requirements.
Core Requirement No. 7: Financial Guarantees and Liability.
Response: No financial guarantees are anticipated as a part of this proposal.
Core Requirement No. 8: Water Quality.
Response: Water quality treatment is not required as the pollution generating impervious surface is less
than 5,000 square feet.
Core Requirement No. 9: Flow Control BMPs
Response: The proposed project will utilize the list approach to the flow control BMP requirement. See
section 4.0 of this report.
2.2 Analysis of the Special Requirements
Special Requirement No. 1: Other Adopted Area-Specific Requireme nts.
Response: This special requirement does not apply to this project.
Special Requirement No. 2: Flood Hazard Area Delineation.
Response: The project is not located in a floodplain or floodway.
Special Requirement No. 3: Flood Protection Faciliti es.
Response: This requirement does not apply.
Special Requirement No. 4: Source Control.
Response: This requirement does not apply.
Special Requirement No. 5: Oil Control.
Response: This requirement does not apply.
3.0 OFF-SITE ANALYSIS
The project site currently sheet flows to the southeast. Runoff from the site flows west to the SW 366th
Street drainage system which consists of ditches and culverts. Runoff travels east for approximately
1,800 feet where it is discharged into the Hylebos Wetlands. Runoff then flows east in the Hylebos
Wetlands for approximately 1,200 feet to Hylebos Creek. Runoff continues generally south and west
ultimately discharging into the Puget Sound.
See Downstream Map in this section.
King
King C ou nty iMa p
Dat e: 1 /2 2 /2 023
Not es:
Th e inform a tion in clud e d o n th is ma p h a s b e en comp ile d by K in g Count y s ta ff fr o m a varie ty of so u rc es a nd is sub je ct tochange w ith o ut n o tic e. King C ou n ty mak es n o re p res e nt a tion s or w a rra ntie s, express or imp lie d , a s to ac cu ra cy,comp let e ne s s, time lin ess, o r rig h ts to t he u se o f su ch inf o rma tio n . This d o cu men t is no t int ende d f or u se a s a su rve yproduct. K in g Cou n ty sh a ll n o t be lia ble f or a ny g en eral, spe cial, ind ire ct , incid en ta l, or co n se qu e nt ial d am a ge s in clu d ing ,but n ot limit e d to, lo st re ve nu e s or lo st p rof its re sultin g fro m th e use or misu se of t he inf o rma tio n co ntain e d on th is ma p.An y sa le of th is ma p o r in formation o n t h is m ap is p ro h ibit ed e xce pt by wr it te n p e r missio n o f K ing Co u n ty.±
SITE
HYLEBOS CREEKDOWNSTREAM DRAINAGE MAP
4.0 FLOW CONTROL, LOW IMPACT DEVELOPMENT (LID) AND WATER QUALITY FACILITY ANALYSIS AND
DESIGN
A. Existing Site Hydrology
The existing project area consists of an existing forest with some pasture . On-site soils consist of
Alderwood till soils according to the NRCS soil survey . Runoff in the existing condition sheet flows to the
southeast. An area summary of the predeveloped condition has been included in section 1.0.
B. Developed Site Hydrology
The developed site consists of 2 new single -family residence s and associated driveway and landscaping.
The site is currently forest with some pasture . Stormwater runoff from the proposed surfaces will be
handled through a combination of dispersion and infiltration if possible . Infiltration is feasible for
shallow systems with testing and/or comparison of the original soil testing during the building permit
phase with site layouts determine d. Infiltration is proposed to the maximum extent feasible in
accordance with the septic/soils recommendations of utilizing sandy loam as determined in the field.
The driveways will utilize perme able pavement. WWHM calculations have been prepared to
demonstrate that up to 3,000 SF of rooftop could be dispersed and still meet the flow control standards
such that a detention system would not be required.
C. Performance Standards
The project is located within the City of Federal Way . The project site lies within the Level 2 flow control
standards. The project does not exceed the thresholds requiring a flow control facility. The project is
resulting in an increase of less than 0.15 cfs in the developed condition above the existing predeveloped
condition. Calculations have been completed to demonstrate that up to 3,000 SF of rooftop per lot
could be dispersed and still meet the flow control standards such that a detention system would not be
required. See calculations in Appendix B. As a part of the Flow Control BMPs and minimum
requirement #9, the proposed project is choosing the list approach for minimum requirement #9. The
BMP Requirements have been summarized below for feasibility:
Full Dispersion: This BMP is infeasible due to lack of available flow path and native vegetation.
Full Infiltration: This BMP is infeasible as the site does not contain outwash soils and does not meet
groundwater indicator separation requirements.
Limited Infiltration: This BMP is feasible and will be utilized to the maximum extent feasible through
infiltration trenches sized for 21 lineal feet of trench per 1,000 square foot of tributary area.
Bioretention: This BMP is not applicable as limited infiltration is proposed .
Permeable Pavement: This BMP is feasible and will be utilized for this pro ject.
Basic Dispersion: This BMP is feasible for portions of the development and will be utilized where
infiltration is infeasible.
Soil Amendment: All disturbed soils will be amended in accordance with the City of Federal Way and
KCSWDM requirements.
Perforated Pipe Connection: Not applicable.
D. Flow Control System
The proposed project will utilize a combination of infiltration and dispersion to handle runoff in
accordance with the performance standards identified above. The driveway s will be handled by
infiltration or sheetflow dispersion. The proposed rooftops will be handled via infiltration or dispersion
where infiltration is infeasible.
E. Water Quality System
Water quality is not required for this project as the pollution generating impervious surface is less than
5,000 square feet.
5.0 CONVEYANCE SYSTEM ANALYSIS AND DESIGN
The conveyance system will be adequately sized during the final engineering phase .
6.0 SPECIAL REPORTS AND STUDIES
Soils Report: Soils testing was completed by Westside S eptic dated December 10, 2018. The report has
been included in Appendix A.
7.0 OTHER PERMITS
Other permits necessary for this project include:
• ROW permit
8.0 CSWPP ANALYSIS AND DESIGN
The site will utilize Appendix D of the 2021 KCSWDM and the standard design details from the 2019
Stormwater Management Manual for Western Washington for the erosion and sedimentation control
design. Refer to the approved TESC plan. Below is a breakdown of how each require element is
addressed:
1. Clearing Limits
Clearing limits will be established in the field. Clearing limits wil l be clearly marked for fenced.
2. Cover Measures
Disturbed areas will be covered through temporary or permanent means. Any soils unworked for more
than 7 days during the dry season (May 1 to September 30) or 2 days during the wet season (October 1
to April 30) will have erosion control nets/blankets, plastic sheeting and temporary or permanent
seeding.
3. Perimeter Protection
Perimeter protection is proposed for the downslope areas as shown on the approved plans. Perimeter
protection shall be used in th e form of silt fence.
4. Traffic Area Stabilization
A temporary construction entrance is proposed at the entry to the site.
5. Sediment Retention
Sediment retention is proposed in the form of catch basin inlet protection as downstream catch basins
from the subject project area.
6. Surface Water Collection
Surface water will be intercepted by the silt fence. Any runoff that leaves the proposed site will be
intercepted in downstream storm drainage systems.
7. Dewatering Controls
No dewatering is anticipated as a part of this project.
8. Dust Control
Dust control will be achieved by watering any exposed soils.
9. Flow Control
Additional flow control measures are not required as a part of this project.
10. Control Pollutants
The only anticipated potential source of pollutants associated with the project would be from mobile
fueling of construction equipment as necessary. If necessary, mobile fueling shall be done in accordance
with BMP A-48 from the 2021 King County Stormwater Pollution Prevention Manual.
11. Protect Existing and Proposed Flow Control BMPs
There are no existing or proposed BMPs on or immediately downstream of the project site. The
perimeter protection measures along with catch basin inlet protection will aid in the protection of any
downstream storm drainage systems.
12. Maintain BMPs
All BMPs will be maintained and repaired in accordance with BMP specifications.
13. Manage the Project
The project will be managed to ensure that all applicable and installed BMPs are adequately maintained
and functioning. In addition, any necessary modifications or repairs to the erosion control BMPs will be
done immediately to avoid impact to downstream properties and storm systems.
9.0 BOND QUANTITIES, FACILITY SUMMARIES, AND DECLARATION OF COVENANT
Maintenance covenants will be prepared, reviewed, and recorded prior to plan approval if required.
All bond quantity forms and required bonds will be se cured prior to permit issuance.
10.0 OPERATIONS AND MAINTENANCE MANUAL
A separate maintenance exhibit will be prepared for each of the single family residences at the time of
building permit if required.
APPENDIX A
APPENDIX B
WWHM2012
PROJECT REPORT
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General Model Information
TRUST Project Name:default[2]
Site Name:Bilovil
Site Address:
City:
Report Date:1/22/2023
Gage:Seatac
Data Start:1948/10/01
Data End:2009/09/30
Timestep:15 Minute
Precip Scale:1.000
Version Date:2022/07/07
Version:4.2.18
POC Thresholds
Low Flow Threshold for POC1:50 Percent of the 2 Year
High Flow Threshold for POC1:50 Year
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Landuse Basin Data
Predeveloped Land Use
Basin 1
Bypass:No
GroundWater:No
Pervious Land Use acre
C, Forest, Flat 0.32
Pervious Total 0.32
Impervious Land Use acre
Impervious Total 0
Basin Total 0.32
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Mitigated Land Use
Basin 1
Bypass:No
GroundWater:No
Pervious Land Use acre
C, Lawn, Flat 0.13
Pervious Total 0.13
Impervious Land Use acre
ROOF TOPS FLAT 0.14
Impervious Total 0.14
Basin Total 0.27
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Routing Elements
Predeveloped Routing
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Mitigated Routing
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Analysis Results
POC 1
+ Predeveloped x Mitigated
Predeveloped Landuse Totals for POC #1
Total Pervious Area:0.32
Total Impervious Area:0
Mitigated Landuse Totals for POC #1
Total Pervious Area:0.13
Total Impervious Area:0.14
Flow Frequency Method:Log Pearson Type III 17B
Flow Frequency Return Periods for Predeveloped. POC #1
Return Period Flow(cfs)
2 year 0.009408
5 year 0.014776
10 year 0.017818
25 year 0.021041
50 year 0.023035
100 year 0.024731
Flow Frequency Return Periods for Mitigated. POC #1
Return Period Flow(cfs)
2 year 0.062041
5 year 0.082258
10 year 0.096515
25 year 0.115559
50 year 0.130514
100 year 0.146144
Annual Peaks
Annual Peaks for Predeveloped and Mitigated. POC #1
Year Predeveloped Mitigated
1949 0.009 0.088
1950 0.012 0.081
1951 0.021 0.055
1952 0.007 0.040
1953 0.005 0.043
1954 0.008 0.050
1955 0.013 0.055
1956 0.010 0.055
1957 0.008 0.067
1958 0.009 0.049
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1959 0.008 0.045
1960 0.014 0.057
1961 0.008 0.056
1962 0.005 0.044
1963 0.007 0.054
1964 0.009 0.050
1965 0.006 0.071
1966 0.006 0.042
1967 0.013 0.082
1968 0.008 0.085
1969 0.008 0.064
1970 0.006 0.058
1971 0.007 0.069
1972 0.015 0.082
1973 0.007 0.037
1974 0.008 0.066
1975 0.010 0.068
1976 0.007 0.051
1977 0.001 0.048
1978 0.007 0.060
1979 0.004 0.078
1980 0.015 0.094
1981 0.006 0.063
1982 0.011 0.098
1983 0.010 0.069
1984 0.006 0.046
1985 0.004 0.064
1986 0.016 0.055
1987 0.014 0.079
1988 0.006 0.045
1989 0.004 0.056
1990 0.030 0.144
1991 0.018 0.107
1992 0.007 0.046
1993 0.007 0.037
1994 0.002 0.038
1995 0.010 0.055
1996 0.022 0.068
1997 0.018 0.064
1998 0.004 0.056
1999 0.017 0.132
2000 0.007 0.062
2001 0.001 0.060
2002 0.008 0.087
2003 0.010 0.068
2004 0.013 0.121
2005 0.009 0.056
2006 0.011 0.051
2007 0.022 0.129
2008 0.029 0.104
2009 0.014 0.069
Ranked Annual Peaks
Ranked Annual Peaks for Predeveloped and Mitigated. POC #1
Rank Predeveloped Mitigated
1 0.0302 0.1440
2 0.0289 0.1319
3 0.0224 0.1295
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4 0.0220 0.1214
5 0.0207 0.1065
6 0.0184 0.1045
7 0.0182 0.0979
8 0.0173 0.0942
9 0.0163 0.0880
10 0.0154 0.0872
11 0.0146 0.0854
12 0.0144 0.0821
13 0.0142 0.0820
14 0.0140 0.0814
15 0.0132 0.0786
16 0.0129 0.0784
17 0.0128 0.0707
18 0.0115 0.0693
19 0.0112 0.0691
20 0.0111 0.0687
21 0.0105 0.0684
22 0.0103 0.0683
23 0.0103 0.0678
24 0.0102 0.0674
25 0.0101 0.0657
26 0.0094 0.0641
27 0.0094 0.0638
28 0.0092 0.0637
29 0.0089 0.0633
30 0.0083 0.0623
31 0.0081 0.0605
32 0.0080 0.0597
33 0.0080 0.0578
34 0.0080 0.0570
35 0.0079 0.0565
36 0.0078 0.0560
37 0.0076 0.0560
38 0.0075 0.0560
39 0.0073 0.0553
40 0.0073 0.0552
41 0.0070 0.0551
42 0.0070 0.0548
43 0.0069 0.0546
44 0.0068 0.0543
45 0.0065 0.0512
46 0.0065 0.0507
47 0.0064 0.0504
48 0.0064 0.0498
49 0.0062 0.0489
50 0.0061 0.0481
51 0.0058 0.0465
52 0.0057 0.0461
53 0.0053 0.0453
54 0.0049 0.0452
55 0.0042 0.0437
56 0.0040 0.0431
57 0.0037 0.0424
58 0.0037 0.0399
59 0.0025 0.0377
60 0.0013 0.0375
61 0.0009 0.0373
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Duration Flows
The Duration Matching Failed
Flow(cfs)Predev Mit Percentage Pass/Fail
0.0047 17547 87694 499 Fail
0.0049 16164 84079 520 Fail
0.0051 14966 80679 539 Fail
0.0053 13851 77492 559 Fail
0.0054 12814 74454 581 Fail
0.0056 11811 71524 605 Fail
0.0058 10900 68872 631 Fail
0.0060 10119 66263 654 Fail
0.0062 9383 63717 679 Fail
0.0064 8731 61364 702 Fail
0.0066 8145 59054 725 Fail
0.0067 7593 56937 749 Fail
0.0069 7060 54819 776 Fail
0.0071 6588 52895 802 Fail
0.0073 6145 50991 829 Fail
0.0075 5777 49237 852 Fail
0.0077 5431 47462 873 Fail
0.0079 5097 45772 898 Fail
0.0080 4808 44146 918 Fail
0.0082 4522 42542 940 Fail
0.0084 4252 41131 967 Fail
0.0086 4017 39698 988 Fail
0.0088 3782 38350 1014 Fail
0.0090 3546 37110 1046 Fail
0.0091 3337 35848 1074 Fail
0.0093 3138 34607 1102 Fail
0.0095 2950 33495 1135 Fail
0.0097 2785 32383 1162 Fail
0.0099 2599 31313 1204 Fail
0.0101 2449 30287 1236 Fail
0.0103 2312 29345 1269 Fail
0.0104 2162 28383 1312 Fail
0.0106 2032 27485 1352 Fail
0.0108 1901 26586 1398 Fail
0.0110 1793 25731 1435 Fail
0.0112 1689 24875 1472 Fail
0.0114 1594 24105 1512 Fail
0.0116 1483 23271 1569 Fail
0.0117 1379 22565 1636 Fail
0.0119 1293 21902 1693 Fail
0.0121 1217 21177 1740 Fail
0.0123 1155 20503 1775 Fail
0.0125 1098 19845 1807 Fail
0.0127 1049 19241 1834 Fail
0.0129 997 18664 1872 Fail
0.0130 930 18138 1950 Fail
0.0132 883 17573 1990 Fail
0.0134 839 17030 2029 Fail
0.0136 789 16521 2093 Fail
0.0138 743 16016 2155 Fail
0.0140 713 15556 2181 Fail
0.0141 671 15152 2258 Fail
0.0143 631 14679 2326 Fail
0.0145 596 14266 2393 Fail
default[2]1/22/2023 8:15:58 PM Page 12
0.0147 566 13826 2442 Fail
0.0149 540 13473 2495 Fail
0.0151 497 13058 2627 Fail
0.0153 473 12705 2686 Fail
0.0154 435 12318 2831 Fail
0.0156 401 11978 2987 Fail
0.0158 368 11599 3151 Fail
0.0160 348 11289 3243 Fail
0.0162 323 10957 3392 Fail
0.0164 296 10673 3605 Fail
0.0166 272 10399 3823 Fail
0.0167 257 10102 3930 Fail
0.0169 235 9837 4185 Fail
0.0171 218 9578 4393 Fail
0.0173 197 9302 4721 Fail
0.0175 180 9024 5013 Fail
0.0177 158 8808 5574 Fail
0.0179 145 8577 5915 Fail
0.0180 129 8382 6497 Fail
0.0182 119 8158 6855 Fail
0.0184 109 7965 7307 Fail
0.0186 97 7749 7988 Fail
0.0188 91 7535 8280 Fail
0.0190 82 7345 8957 Fail
0.0191 76 7178 9444 Fail
0.0193 69 6990 10130 Fail
0.0195 61 6817 11175 Fail
0.0197 54 6598 12218 Fail
0.0199 48 6419 13372 Fail
0.0201 41 6228 15190 Fail
0.0203 38 6081 16002 Fail
0.0204 33 5910 17909 Fail
0.0206 27 5760 21333 Fail
0.0208 22 5595 25431 Fail
0.0210 21 5448 25942 Fail
0.0212 20 5298 26490 Fail
0.0214 19 5178 27252 Fail
0.0216 17 5046 29682 Fail
0.0217 14 4932 35228 Fail
0.0219 12 4819 40158 Fail
0.0221 9 4686 52066 Fail
0.0223 4 4556 113900 Fail
0.0225 3 4455 148500 Fail
0.0227 3 4338 144600 Fail
0.0228 3 4244 141466 Fail
0.0230 3 4128 137600 Fail
The development has an increase in flow durations
from 1/2 Predeveloped 2 year flow to the 2 year flow
or more than a 10% increase from the 2 year to the 50
year flow.
The development has an increase in flow durations for
more than 50% of the flows for the range of the
duration analysis.
default[2]1/22/2023 8:15:58 PM Page 13
Water Quality
Water Quality BMP Flow and Volume for POC #1
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.
default[2]1/22/2023 8:15:58 PM Page 14
LID Report
default[2]1/22/2023 8:16:29 PM Page 15
Model Default Modifications
Total of 0 changes have been made.
PERLND Changes
No PERLND changes have been made.
IMPLND Changes
No IMPLND changes have been made.
default[2]1/22/2023 8:16:29 PM Page 16
Appendix
Predeveloped Schematic
default[2]1/22/2023 8:16:30 PM Page 17
Mitigated Schematic
default[2]1/22/2023 8:16:32 PM Page 18
Predeveloped UCI File
RUN
GLOBAL
WWHM4 model simulation
START 1948 10 01 END 2009 09 30
RUN INTERP OUTPUT LEVEL 3 0
RESUME 0 RUN 1 UNIT SYSTEM 1
END GLOBAL
FILES
<File> <Un#> <-----------File Name------------------------------>***
<-ID-> ***
WDM 26 default[2].wdm
MESSU 25 Predefault[2].MES
27 Predefault[2].L61
28 Predefault[2].L62
30 POCdefault[2]1.dat
END FILES
OPN SEQUENCE
INGRP INDELT 00:15
PERLND 10
COPY 501
DISPLY 1
END INGRP
END OPN SEQUENCE
DISPLY
DISPLY-INFO1
# - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND
1 Basin 1 MAX 1 2 30 9
END DISPLY-INFO1
END DISPLY
COPY
TIMESERIES
# - # NPT NMN ***
1 1 1
501 1 1
END TIMESERIES
END COPY
GENER
OPCODE
# # OPCD ***
END OPCODE
PARM
# # K ***
END PARM
END GENER
PERLND
GEN-INFO
<PLS ><-------Name------->NBLKS Unit-systems Printer ***
# - # User t-series Engl Metr ***
in out ***
10 C, Forest, Flat 1 1 1 1 27 0
END GEN-INFO
*** Section PWATER***
ACTIVITY
<PLS > ************* Active Sections *****************************
# - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ***
10 0 0 1 0 0 0 0 0 0 0 0 0
END ACTIVITY
PRINT-INFO
<PLS > ***************** Print-flags ***************************** PIVL PYR
# - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *********
10 0 0 4 0 0 0 0 0 0 0 0 0 1 9
END PRINT-INFO
default[2]1/22/2023 8:16:32 PM Page 19
PWAT-PARM1
<PLS > PWATER variable monthly parameter value flags ***
# - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT ***
10 0 0 0 0 0 0 0 0 0 0 0
END PWAT-PARM1
PWAT-PARM2
<PLS > PWATER input info: Part 2 ***
# - # ***FOREST LZSN INFILT LSUR SLSUR KVARY AGWRC
10 0 4.5 0.08 400 0.05 0.5 0.996
END PWAT-PARM2
PWAT-PARM3
<PLS > PWATER input info: Part 3 ***
# - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP
10 0 0 2 2 0 0 0
END PWAT-PARM3
PWAT-PARM4
<PLS > PWATER input info: Part 4 ***
# - # CEPSC UZSN NSUR INTFW IRC LZETP ***
10 0.2 0.5 0.35 6 0.5 0.7
END PWAT-PARM4
PWAT-STATE1
<PLS > *** Initial conditions at start of simulation
ran from 1990 to end of 1992 (pat 1-11-95) RUN 21 ***
# - # *** CEPS SURS UZS IFWS LZS AGWS GWVS
10 0 0 0 0 2.5 1 0
END PWAT-STATE1
END PERLND
IMPLND
GEN-INFO
<PLS ><-------Name-------> Unit-systems Printer ***
# - # User t-series Engl Metr ***
in out ***
END GEN-INFO
*** Section IWATER***
ACTIVITY
<PLS > ************* Active Sections *****************************
# - # ATMP SNOW IWAT SLD IWG IQAL ***
END ACTIVITY
PRINT-INFO
<ILS > ******** Print-flags ******** PIVL PYR
# - # ATMP SNOW IWAT SLD IWG IQAL *********
END PRINT-INFO
IWAT-PARM1
<PLS > IWATER variable monthly parameter value flags ***
# - # CSNO RTOP VRS VNN RTLI ***
END IWAT-PARM1
IWAT-PARM2
<PLS > IWATER input info: Part 2 ***
# - # *** LSUR SLSUR NSUR RETSC
END IWAT-PARM2
IWAT-PARM3
<PLS > IWATER input info: Part 3 ***
# - # ***PETMAX PETMIN
END IWAT-PARM3
IWAT-STATE1
<PLS > *** Initial conditions at start of simulation
# - # *** RETS SURS
END IWAT-STATE1
default[2]1/22/2023 8:16:32 PM Page 20
END IMPLND
SCHEMATIC
<-Source-> <--Area--> <-Target-> MBLK ***
<Name> # <-factor-> <Name> # Tbl# ***
Basin 1***
PERLND 10 0.32 COPY 501 12
PERLND 10 0.32 COPY 501 13
******Routing******
END SCHEMATIC
NETWORK
<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***
<Name> # <Name> # #<-factor->strg <Name> # # <Name> # # ***
COPY 501 OUTPUT MEAN 1 1 48.4 DISPLY 1 INPUT TIMSER 1
<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***
<Name> # <Name> # #<-factor->strg <Name> # # <Name> # # ***
END NETWORK
RCHRES
GEN-INFO
RCHRES Name Nexits Unit Systems Printer ***
# - #<------------------><---> User T-series Engl Metr LKFG ***
in out ***
END GEN-INFO
*** Section RCHRES***
ACTIVITY
<PLS > ************* Active Sections *****************************
# - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG ***
END ACTIVITY
PRINT-INFO
<PLS > ***************** Print-flags ******************* PIVL PYR
# - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR *********
END PRINT-INFO
HYDR-PARM1
RCHRES Flags for each HYDR Section ***
# - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each
FG FG FG FG possible exit *** possible exit possible exit
* * * * * * * * * * * * * * ***
END HYDR-PARM1
HYDR-PARM2
# - # FTABNO LEN DELTH STCOR KS DB50 ***
<------><--------><--------><--------><--------><--------><--------> ***
END HYDR-PARM2
HYDR-INIT
RCHRES Initial conditions for each HYDR section ***
# - # *** VOL Initial value of COLIND Initial value of OUTDGT
*** ac-ft for each possible exit for each possible exit
<------><--------> <---><---><---><---><---> *** <---><---><---><---><--->
END HYDR-INIT
END RCHRES
SPEC-ACTIONS
END SPEC-ACTIONS
FTABLES
END FTABLES
EXT SOURCES
<-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***
<Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # ***
WDM 2 PREC ENGL 1 PERLND 1 999 EXTNL PREC
WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC
default[2]1/22/2023 8:16:32 PM Page 21
WDM 1 EVAP ENGL 0.76 PERLND 1 999 EXTNL PETINP
WDM 1 EVAP ENGL 0.76 IMPLND 1 999 EXTNL PETINP
END EXT SOURCES
EXT TARGETS
<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd ***
<Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg***
COPY 501 OUTPUT MEAN 1 1 48.4 WDM 501 FLOW ENGL REPL
END EXT TARGETS
MASS-LINK
<Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->***
<Name> <Name> # #<-factor-> <Name> <Name> # #***
MASS-LINK 12
PERLND PWATER SURO 0.083333 COPY INPUT MEAN
END MASS-LINK 12
MASS-LINK 13
PERLND PWATER IFWO 0.083333 COPY INPUT MEAN
END MASS-LINK 13
END MASS-LINK
END RUN
default[2]1/22/2023 8:16:32 PM Page 22
Mitigated UCI File
RUN
GLOBAL
WWHM4 model simulation
START 1948 10 01 END 2009 09 30
RUN INTERP OUTPUT LEVEL 3 0
RESUME 0 RUN 1 UNIT SYSTEM 1
END GLOBAL
FILES
<File> <Un#> <-----------File Name------------------------------>***
<-ID-> ***
WDM 26 default[2].wdm
MESSU 25 Mitdefault[2].MES
27 Mitdefault[2].L61
28 Mitdefault[2].L62
30 POCdefault[2]1.dat
END FILES
OPN SEQUENCE
INGRP INDELT 00:15
PERLND 16
IMPLND 4
COPY 501
DISPLY 1
END INGRP
END OPN SEQUENCE
DISPLY
DISPLY-INFO1
# - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND
1 Basin 1 MAX 1 2 30 9
END DISPLY-INFO1
END DISPLY
COPY
TIMESERIES
# - # NPT NMN ***
1 1 1
501 1 1
END TIMESERIES
END COPY
GENER
OPCODE
# # OPCD ***
END OPCODE
PARM
# # K ***
END PARM
END GENER
PERLND
GEN-INFO
<PLS ><-------Name------->NBLKS Unit-systems Printer ***
# - # User t-series Engl Metr ***
in out ***
16 C, Lawn, Flat 1 1 1 1 27 0
END GEN-INFO
*** Section PWATER***
ACTIVITY
<PLS > ************* Active Sections *****************************
# - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ***
16 0 0 1 0 0 0 0 0 0 0 0 0
END ACTIVITY
PRINT-INFO
<PLS > ***************** Print-flags ***************************** PIVL PYR
# - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *********
16 0 0 4 0 0 0 0 0 0 0 0 0 1 9
END PRINT-INFO
default[2]1/22/2023 8:16:32 PM Page 23
PWAT-PARM1
<PLS > PWATER variable monthly parameter value flags ***
# - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT ***
16 0 0 0 0 0 0 0 0 0 0 0
END PWAT-PARM1
PWAT-PARM2
<PLS > PWATER input info: Part 2 ***
# - # ***FOREST LZSN INFILT LSUR SLSUR KVARY AGWRC
16 0 4.5 0.03 400 0.05 0.5 0.996
END PWAT-PARM2
PWAT-PARM3
<PLS > PWATER input info: Part 3 ***
# - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP
16 0 0 2 2 0 0 0
END PWAT-PARM3
PWAT-PARM4
<PLS > PWATER input info: Part 4 ***
# - # CEPSC UZSN NSUR INTFW IRC LZETP ***
16 0.1 0.25 0.25 6 0.5 0.25
END PWAT-PARM4
PWAT-STATE1
<PLS > *** Initial conditions at start of simulation
ran from 1990 to end of 1992 (pat 1-11-95) RUN 21 ***
# - # *** CEPS SURS UZS IFWS LZS AGWS GWVS
16 0 0 0 0 2.5 1 0
END PWAT-STATE1
END PERLND
IMPLND
GEN-INFO
<PLS ><-------Name-------> Unit-systems Printer ***
# - # User t-series Engl Metr ***
in out ***
4 ROOF TOPS/FLAT 1 1 1 27 0
END GEN-INFO
*** Section IWATER***
ACTIVITY
<PLS > ************* Active Sections *****************************
# - # ATMP SNOW IWAT SLD IWG IQAL ***
4 0 0 1 0 0 0
END ACTIVITY
PRINT-INFO
<ILS > ******** Print-flags ******** PIVL PYR
# - # ATMP SNOW IWAT SLD IWG IQAL *********
4 0 0 4 0 0 4 1 9
END PRINT-INFO
IWAT-PARM1
<PLS > IWATER variable monthly parameter value flags ***
# - # CSNO RTOP VRS VNN RTLI ***
4 0 0 0 0 0
END IWAT-PARM1
IWAT-PARM2
<PLS > IWATER input info: Part 2 ***
# - # *** LSUR SLSUR NSUR RETSC
4 400 0.01 0.1 0.1
END IWAT-PARM2
IWAT-PARM3
<PLS > IWATER input info: Part 3 ***
# - # ***PETMAX PETMIN
4 0 0
default[2]1/22/2023 8:16:32 PM Page 24
END IWAT-PARM3
IWAT-STATE1
<PLS > *** Initial conditions at start of simulation
# - # *** RETS SURS
4 0 0
END IWAT-STATE1
END IMPLND
SCHEMATIC
<-Source-> <--Area--> <-Target-> MBLK ***
<Name> # <-factor-> <Name> # Tbl# ***
Basin 1***
PERLND 16 0.13 COPY 501 12
PERLND 16 0.13 COPY 501 13
IMPLND 4 0.14 COPY 501 15
******Routing******
END SCHEMATIC
NETWORK
<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***
<Name> # <Name> # #<-factor->strg <Name> # # <Name> # # ***
COPY 501 OUTPUT MEAN 1 1 48.4 DISPLY 1 INPUT TIMSER 1
<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***
<Name> # <Name> # #<-factor->strg <Name> # # <Name> # # ***
END NETWORK
RCHRES
GEN-INFO
RCHRES Name Nexits Unit Systems Printer ***
# - #<------------------><---> User T-series Engl Metr LKFG ***
in out ***
END GEN-INFO
*** Section RCHRES***
ACTIVITY
<PLS > ************* Active Sections *****************************
# - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG ***
END ACTIVITY
PRINT-INFO
<PLS > ***************** Print-flags ******************* PIVL PYR
# - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR *********
END PRINT-INFO
HYDR-PARM1
RCHRES Flags for each HYDR Section ***
# - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each
FG FG FG FG possible exit *** possible exit possible exit
* * * * * * * * * * * * * * ***
END HYDR-PARM1
HYDR-PARM2
# - # FTABNO LEN DELTH STCOR KS DB50 ***
<------><--------><--------><--------><--------><--------><--------> ***
END HYDR-PARM2
HYDR-INIT
RCHRES Initial conditions for each HYDR section ***
# - # *** VOL Initial value of COLIND Initial value of OUTDGT
*** ac-ft for each possible exit for each possible exit
<------><--------> <---><---><---><---><---> *** <---><---><---><---><--->
END HYDR-INIT
END RCHRES
SPEC-ACTIONS
default[2]1/22/2023 8:16:32 PM Page 25
END SPEC-ACTIONS
FTABLES
END FTABLES
EXT SOURCES
<-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***
<Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # ***
WDM 2 PREC ENGL 1 PERLND 1 999 EXTNL PREC
WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC
WDM 1 EVAP ENGL 0.76 PERLND 1 999 EXTNL PETINP
WDM 1 EVAP ENGL 0.76 IMPLND 1 999 EXTNL PETINP
END EXT SOURCES
EXT TARGETS
<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd ***
<Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg***
COPY 1 OUTPUT MEAN 1 1 48.4 WDM 701 FLOW ENGL REPL
COPY 501 OUTPUT MEAN 1 1 48.4 WDM 801 FLOW ENGL REPL
END EXT TARGETS
MASS-LINK
<Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->***
<Name> <Name> # #<-factor-> <Name> <Name> # #***
MASS-LINK 12
PERLND PWATER SURO 0.083333 COPY INPUT MEAN
END MASS-LINK 12
MASS-LINK 13
PERLND PWATER IFWO 0.083333 COPY INPUT MEAN
END MASS-LINK 13
MASS-LINK 15
IMPLND IWATER SURO 0.083333 COPY INPUT MEAN
END MASS-LINK 15
END MASS-LINK
END RUN
default[2]1/22/2023 8:16:32 PM Page 26
Predeveloped HSPF Message File
default[2]1/22/2023 8:16:32 PM Page 27
Mitigated HSPF Message File
default[2]1/22/2023 8:16:32 PM Page 28
Disclaimer
Legal Notice
This program and accompanying documentation is provided 'as-is' without warranty of any kind. The
entire risk regarding the performance and results of this program is assumed by the user. Clear Creek
Solutions, Inc. 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, Inc. 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, Inc. has been
advised of the possibility of such damages.
Clear Creek Solutions, Inc.
6200 Capitol Blvd. Ste F
Olympia, WA. 98501
Toll Free 1(866)943-0304
Local (360)943-0304
www.clearcreeksolutions.com