PRELIMINARY STORM DRAINAGE REPORT DRURY LANE DEVELOPMENT 704 1ST STREET SULTAN, WA 98294-94240 PARCEL #28083200305500 AUDITOR’S FILE NO. 1090255
CITY OF SULTAN SNOHOMISH COUNTY, WASHINGTON
PREPARED FOR: STACY MACGREGOR PO BOX 80 GOLD BAR, WA 98251
PREPARED BY: MICHAEL GIESEKE
Date: January 5th, 2018
RAIN CITY DEVELOPMENT DRURY LANE DEVELOPMENT PROJECT NO. RCD #001 4841 NE 45TH ST, SEATTLE, WA 98105 (425) 443 - 1060
PRELIMINARY STORM DRAINAGE REPORT DRURY LANE DEVELOPMENT 704 1ST STREET SULTAN, WA 98294-94240 PARCEL #28083200305500 AUDITOR’S FILE NO. 1090255
CITY OF SULTAN SNOHOMISH COUNTY, WASHINGTON
PREPARED FOR: STACY MACGREGOR PO BOX 80 GOLD BAR, WA 98251
PREPARED BY: MICHAEL GIESEKE
Date: January 5th, 2018
RAIN CITY DEVELOPMENT DRURY LANE DEVELOPMENT PROJECT NO. RCD #001 4841 NE 45TH ST, SEATTLE, WA 98105 (425) 443 - 1060
Table of Contents 1)
Project Overview: ................................................................................................................ 3 Analysis of Minimum Requirements: ....................................................................................... 3 Minimum Requirement #1: Targeted Stormwater Site Plan ............................................. 3 Minimum Requirement #2: SWPPP Narrative:................................................................. 4 Minimum Requirements #3: Water Pollution Source Control for New Development:........ 4 Minimum Requirements #4: Preservation of natural drainage systems and outfalls and provisions of off-site mitigation: ........................................................................................... 4 Minimum Requirements #5: On-site Stormwater Management ........................................ 4 Minimum Requirements #6: Run-off Treatment Requirements ........................................ 5 Minimum Requirements #7: Flow control ......................................................................... 5 Minimum Requirements #8: Wetlands Protection ............................................................ 5 Minimum Requirements #9: Operations and Maintenance Manual .................................. 5 2) Vicinity Map: ....................................................................................................................... 7 3) Existing Conditions Exhibits ................................................................................................ 8 Assessor Map / SCOPI GIS ................................................................................................ 8 USGS Soil Map ................................................................................................................... 9 Sensitive Area Map ............................................................................................................10 FEMA.................................................................................................................................11 Existing Conditions Exhibit .................................................................................................12 4) Existing Conditions Overview .............................................................................................13 5) Areas of Site Limitation ......................................................................................................14 6) Off-Site Analysis ................................................................................................................15 Targeted Drainage Report .....................................................................................................15 7) Drainage Design ................................................................................................................17 Developed Conditions Exhibit ............................................................................................18 8) SWPPP..............................................................................................................................19 9) Permanent Stormwater Control Plan ..................................................................................20 Preliminary Conveyance Calculations:...................................................................................20 Curve Number Calculation Exhibits ....................................................................................21 Manning’s Pipe Sizing Equation Spreadsheets ..................................................................21 Preliminary Infiltration Basin Calculations: .............................................................................22 Preliminary Water Quality Calculations: .................................................................................22 Preliminary Biofiltration Swale Calculations: .......................................................................22 Preliminary Upstream Pre Treatmeant / Filtration Vault Calculations: ................................22 10) Special Reports ..............................................................................................................23 Geotechnical Engineering Report ......................................................................................23 Environmental Study: .........................................................................................................25 11) Other Reports and Approvals .........................................................................................27 12) Operations and Maintenance Manual .............................................................................27 13) Bond Quantity Worksheet ...............................................................................................27
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1)
Project Overview:
The development name is the Drury Lane Development. The subject property address is 704 1st Street, in the City of Sultan, WA 98294-94240, PARCEL #28083200305500, Auditor’s File No. 1090255. The project consists of 1 existing parcel and 9-new parcels: One existing singlefamily residence will remain separate from the development within the existing parcel, 1 storm and recreation tract, and 8 new single-family residential lots will be constructed as part of the development. The stormwater from the existing property infiltrates onsite with overflows and groundwater leading to the existing stream west of the property. Other work will include a private roadway, driveways, a tight-lined conveyance system and an overall conveyance system. The project proposes to utilize the infiltrative nature of the existing soils and route the storm runoff to the existing low point onsite. The conveyance systems will route the stormwater runoff from the site for pre-treatment/water quality treatment upstream of the final stormwater permutation through an infiltration basin. Excess overflows will be routed to the existing city’s stormwater conveyance system.
Analysis of Minimum Requirements: Minimum Requirement #1:
Targeted Stormwater Site Plan
Drainage Plan Description:
Once developed, runoff from the proposed new single family residences roof and footing drains, driveways, yards, and roadway will be collected and tight lined through a series of individual lot pipes systems conveyed to the roadway catch basin and storm pipes conveyance system that will convey the overall site flow to the proposed infiltration basin located in a proposed Storm Tract 999 on the southwest portion of the property. The infiltration basin will be sized per SCC 30.63A.550 so that discharges match the required range of pre-developed discharge rates. This will be accomplished by sizing the infiltration basin to fully infiltrate onsite. An emergency overflow system is proposed to tie into the existing City of Sultan Conveyance System. The WWHM 2012 Stormwater Program is used to size the stormwater system. Manning’s equation and a backflow analysis will be used to size the onsite conveyance system. Proposed Water Quality Measures:
Water quality treatment will be provided via storm-filter cartridges which will be located directly upstream of the infiltration basin. Existing and Proposed Drainage Basins:
The project contains a single drainage basin onsite with existing stormwater infiltrating onsite. The storm runoff will be collected and treated prior to infiltration within the Storm Tract 999. The runoff in the existing condition spreads over the pervious surfaces as it sheet flows to the existing low point onsite and infiltrates. For further details, please see the Existing Conditions Exhibit located in Section 3 of this report, and the offsite analysis, in section 6 of this report. The runoff in the proposed conditions will drain from tight lined roof systems into the proposed closed conveyance systems consisting of standard catch basin and piped conveyance. The RCD # 001 January, 2018
3 Drury Lane Development
runoff from the short plat is proposed to infiltrate onsite and be contained within the Storm Tract 999. Any overflows will be designed to spill into the existing City of Sultan roadway conveyance system. Proposed Drainage System:
The proposed drainage system will consist of a series of catch basins, swales and ditches, storm pipes to collect and convey developed runoff to the water quality facilities andinfiltration basin onsite. The system will utilize water quality swale / pre-treatment basin / filtration vault facilities upstream of the infiltration system for water quality. Upstream Drainage Analysis:
The project is bounded to the west by curb and gutter and adjacent properties on all other sides. Each adjacent property is graded to drain into the City of Sultan’s roadway conveyance system with only minor shared area infiltrating onsite at the shared low point. There are small areas from adjacent lawns that drain to the onsite low point, but there are no significant upstream basin areas to the property and are assumed to have no contributions. Minimum Requirement #2: SWPPP Narrative: This will be completed following the Preliminary Plat Application. Element #1: Preserve Vegetation / Mark Clearing Limits: Element #2: Establish Construction Access: Element #3: Control Flow Rates: Element #4: Install Sediment Controls: Element #5: Stabilize Soils: Element #6: Protect Slopes: Element #7: Protect Permanent Drain Inlets: Element #8: Stabilize Channels and Outlets Element #9: Control Pollutants: Element #10: Control Dewatering: Element #11: Maintain BMP’s: Element #12: Manage the Project: Minimum Requirements #3: Water Pollution Source Control for New Development: There are no identified source control activities that will need to be addressed as a part of this residential development. Minimum Requirements #4: Preservation of natural drainage systems and outfalls and provisions of off-site mitigation: The entire project site drains to the mid-site low point. The drainage onsite will be maintained so that runoff will continue to flow to the low point. Minimum Requirements #5: On-site Stormwater Management Stormwater management is required to be implemented in accordance with SCC 30.63A.525. The code states that BMP requirements are to be implemented to the maximum extent feasible without causing flooding or erosion impacts. The on-site gravelly and sandy soils are such that infiltration is feasible and recommended, per the geotechnical report, later contained within this cover. The on-site soils are classified as “Hydrologic Soil Group A”. Additionally, the project will RCD # 001 January, 2018
4 Drury Lane Development
implement post-construction soil amendment and perforated stub-out connections to satisfy any additional LID requirements. Minimum Requirements #6: Run-off Treatment Requirements All on-site runoff will be treated using basic water quality measures. On-site water quality measures are proposed to be met with a pre-treatment basin or storm filter filtration facilities upstream of the infiltration basin. Please refer to Section 7 of this report for more details. Minimum Requirements #7: Flow control The proposed drainage system will consist of a series of catch basins and storm pipes to collect and convey the runoff to the infiltration basin on site and discharge any emergency overflows to the existing City of Sultan conveyance system. Please see the WWHM2012 calculations in Section 7 for infiltration basin sizing. Minimum Requirements #8: Wetlands Protection There are no wetlands located on site therefore no wetland protection is necessary for this project. Minimum Requirements #9: Operations and Maintenance Manual Operations and Maintenance manuals will be provided for the infiltration basin and water quality facilities in section 12 of this report.
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Attachment B: Report summary: Drainage Information Summary
Note: This section will be completed following preliminary plat submittal.
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2)
Vicinity Map:
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3)
Existing Conditions Exhibits
Assessor Map / SCOPI GIS
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USGS Soil Map
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Sensitive Area Map Snohomish County Lidar Folio. FEMA Flood Plain Map available on the following page.
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4)
Existing Conditions Overview
The subject property is rectangular east to west, is approximately 2.02 Acres (per Snohomish County Scopi). The property abuts 1st Street, and is on the east side of the road. The frontage is approximately 180-ft north to south, and the property is approximately 490-ft east to west. There is an existing single-family resident on the southeast corner of the property. The property is mostly vegetation with a cluster of trees in the center portion of the property. Single family residences border the property on all sides except the western portion of the property which is accessed from 1st Street. The project is generally level, with gentle slopes in towards the center third of the property with an approximate drop of 4-6 feet in the low spot from the general elevation of the subject property. Per the Snohomish County SnoScape (see geotechnical report in Section 10 of this report), there are no steep slopes onsite. Additionally, per the environmental review, there are no flood plains or wetlands on or adjacent to the site within 200-ft of the subject property. See special reports study, section 10 of this report for more information. Per the geotechnical report, the topsoil is loose organic sandy silt (top soil) and native mediumstiff non-plastic sandy silt (alluvium) extend to 3-4ft below the surface. Underlying these soils were medium-dense, gravelly sand and slightly silty sand (Alluvium) that generally extend to the maximum explored depth test pits. See the geotechnical report for more information, in Section 10 of this report. The topography of the site slopes to the low point in the middle-westerly portion of the site. The onsite vegetation is mostly second growth trees and vegetation. For drainage purposes, the site will be modeled as outwash-forest in its entirety. This project consists of one existing tax parcel with the following parcel number: 28083200305500. The existing home will be partitioned into its own parcel separate from the developer as part of the residential project.
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5)
Areas of Site Limitation
The site contains a low spot on the central-westerly portion of the site. This portion of the site will require special care during construction as to not compact the soils and adversely affect the permeability of the soils for future water quality and stormwater infiltration. Additionally this area will be required for in-situ onsite testing (PIT Test) to determine infiltration rates following the preliminary plat application submittal.
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6)
Off-Site Analysis
The project abuts an existing City of Sultan stormwater conveyance system on High Street and 1st Street. The subject property does not drain off site and percolates into groundwater and infiltrates onsite combining with the City of Sultan stormwater conveyance system downstream. The subject property does not have any natural features in its downstream drainage path for any unforeseen flows that do overflow offsite. There are no known flooding issues within the subject property. The existing off-site conveyance system drains and outfalls to Skykomish River, more than a quarter-mile downstream of the site. A more in depth off-site analysis will be conducted following the preliminary plat review upon City requirement.
Targeted Drainage Report The Targeted Drainage Report is included on the following page.
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Targeted Drainage Report
THIS PAGE INTENTIONALLY LEFT BLANK – REPLACE PDF PAGE WITH TDR REPORT
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7)
Drainage Design
The project consists of maintaining an existing single-family residence, a storm tract and 8 single-family residential detached dwelling units. This work includes a public road and will include minor frontage improvements and ROW dedication along 1st Street. Along with the frontage improvements, a storm drainage runoff collection system will be installed to capture runoff from the developed surfaces and conveyed to the onsite facilities for pre-treatment / water quality treatment and final dispersion through infiltration on site. Emergency overflow runoff will be designed to flow to the 1st Street roadway containing the existing City of Sultan conveyance system. Please see the Developed Conditions Exhibit on the following page for more information.
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8)
SWPPP
The SWPPP will be prepared in accordance with the Snohomish County and Department of Ecology NPDES regulations and will be submitted separate from this report. Temporary Sediment Pond Sizing Calculations to be included in the final Storm Drainage Report.
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9)
Permanent Stormwater Control Plan
Stormwater runoff will be collected by a combination of tight lined individual lot conveyance systems with LID perf-pipe/infiltration trenches with overflows into the project roadway conveyance system consisting of a series of catch basins and pipes. The roadway conveyance system will convey the stormwater runoff to a water quality swale / pretreatment basin / filtration facility upstream of the proposed infiltration facility. The stormwater runoff is proposed to fully infiltrate onsite. Any emergency overflow will be routed to the City of Sultan existing stormwater conveyance system off 1st Street and High Street.
Preliminary Conveyance Calculations: The onsite conveyance system will be sized using the rational method and Manning’s formula sized for the 50-year storm event. The backwater conveyance calculations will be attached and exhibits provided following the preliminary plat application submittal. The preliminary sizing is provided on the following pages using basic pipe slope and manning equations for each conveyance system
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Project Sultan 9 Lot Short Plat Date 9/4/2017 Description: Individual Lot - Roof and Footing Conveyance System
C-Value (1-Lot, roof tightline conveyance) Type of Land Cover
C-Value
Area
Dense Forest
0.10
0.00
Light Forest
0.15
0.00
Pasture
0.20
0.00
Lawns Heavy Soil (Flat)
0.17
0.000
Lawns Heavy Soil (Rolling)
0.22
0.000
Playgrounds
0.30
0.000
Gravel Areas
0.80
0.000
Pavements and Roofs
0.90
0.040
1.00
0.000
0.900
0.040
Open Water (pond, lakes, wetlands) Total
Law
Storm Event
IR - Peak Rainfall Intensity PR AR BR
TC
IR
Total Precipitation
Coefficient
Coefficient
Time of Concentration
25-year
3.24
2.66
0.65
6.30
2.605
50-year
4.47
2.61
0.63
6.30
3.659
Rational Method IR A
Storm Event
C
25-year
0.900
2.605
0.04
0.09
QR
50-year
0.900
3.659
0.04
0.13
Project Sultan 9 Lot Short Plat Date 9/4/2017 Description: Individual Lot - Yard Conveyance System
C-Value (1-Lot, conveyance) Type of Land Cover
C-Value
Area
Dense Forest
0.10
0.00
Light Forest
0.15
0.00
Pasture
0.20
0.00
Lawns Heavy Soil (Flat)
0.17
0.045
Lawns Heavy Soil (Rolling)
0.22
0.010
Playgrounds
0.30
0.000
Gravel Areas
0.80
0.000
Pavements and Roofs
0.90
0.070
Open Water (pond, lakes, wetlands)
1.00
0.000
0.565
0.125
Total
Storm Event
IR - Peak Rainfall Intensity PR AR BR
TC
IR
Total Precipitation
Coefficient
Coefficient
Time of Concentration
25-year
3.24
2.66
0.65
6.30
2.605
50-year
4.47
2.61
0.63
6.30
3.659
Rational Method IR A
Storm Event
C
QR
25-year
0.565
2.605
0.13
0.18
50-year
0.565
3.659
0.13
0.26
Project Date Description:
Sultan 9 Lot Short Plat 9/4/2017 3-Lots - Yard Conveyance System
C-Value (3-Lot conveyance) Type of Land Cover
C-Value
Area
Dense Forest
0.10
0.00
Light Forest
0.15
0.00
Pasture
0.20
0.00
Lawns Heavy Soil (Flat)
0.17
0.135
Lawns Heavy Soil (Rolling)
0.22
0.030
Playgrounds
0.30
0.000
Gravel Areas
0.80
0.000
Pavements and Roofs
0.90
0.210
Open Water (pond, lakes, wetlands)
1.00
0.000
0.565
0.375
Total
Storm Event
IR - Peak Rainfall Intensity PR AR BR
TC
IR
Total Precipitation
Coefficient
Coefficient
Time of Concentration
25-year
3.24
2.66
0.65
6.30
2.605
50-year
4.47
2.61
0.63
6.30
3.659
Storm Event
C
Rational Method IR
A
QR
25-year
0.565
2.605
0.38
0.55
50-year
0.565
3.659
0.38
0.78
Project Date Description:
Sultan 9 Lot Short Plat 9/4/2017 Roadway Conveyance System - Total basin area tributary to pond, not including storm tract
C-Value (Roadway conveyance) Type of Land Cover
C-Value
Area
Dense Forest
0.10
0.00
Light Forest
0.15
0.00
Pasture
0.20
0.00
Lawns Heavy Soil (Flat)
0.17
0.480
Lawns Heavy Soil (Rolling)
0.22
0.080
Playgrounds
0.30
0.000
Gravel Areas
0.80
0.000
Pavements and Roofs
0.90
0.900
1.00
0.000
0.611
1.460
Open Water (pond, lakes, wetlands) Total
Storm Event
IR - Peak Rainfall Intensity PR AR BR
TC
IR
Total Precipitation
Coefficient
Coefficient
Time of Concentration
25-year
3.24
2.66
0.65
6.30
2.605
50-year
4.47
2.61
0.63
6.30
3.659
Storm Event
C
Rational Method IR
A
QR
25-year
0.611
2.605
1.46
2.32
50-year
0.611
3.659
1.46
3.26
Project Date Description:
Sultan 9 Lot Short Plat 9/4/2017 Total Site Area
C-Value (Total Project Conveyance) Type of Land Cover
C-Value
Area
Dense Forest
0.10
0.00
Light Forest
0.15
0.00
Pasture
0.20
0.00
Lawns Heavy Soil (Flat)
0.17
0.500
Lawns Heavy Soil (Rolling)
0.22
0.266
Playgrounds
0.30
0.000
Gravel Areas
0.80
0.000
Pavements and Roofs
0.90
1.140
Open Water (pond, lakes, wetlands)
1.00
0.000
0.583
1.906
Total
Storm Event
IR - Peak Rainfall Intensity PR AR BR
TC
IR
Total Precipitation
Coefficient
Coefficient
Time of Concentration
25-year
3.24
2.66
0.65
6.30
2.605
50-year
4.47
2.61
0.63
6.30
3.659
Storm Event
C
Rational Method IR
A
QR
25-year
0.583
2.605
1.91
2.89
50-year
0.583
3.659
1.91
4.07
Preliminary Infiltration Basin Calculations: The project contains a single drainage basin onsite with existing stormwater infiltrating onsite. The runoff in the existing condition spreads over the pervious surfaces as it sheet flows to the existing low point onsite and infiltrates. For further details, please see the Existing Conditions Exhibit located in Section 3 of this report, and the offsite analysis, in section 6 of this report. The proposed infiltration basin is designed to accommodate all runoff from the proposed roadway, driveways, yards, roof and footing drains for the developed properties. The runoff will be collected and conveyed through a series of individual lot tightline conveyance systems to the roadway conveyance system consisting of catch basin and storm pipes to upstream water quality measures. Water quality treatment will be provided by a swale or filter-vault which will be located directly upstream of the infiltration basin. Further water quality measures can be found later in this section. Following the upstream water quality measures, the final infiltration basin will be located in the proposed Storm Tract 999 on the southwest portion of the property. The infiltration basin will be sized per SCC 30.63A.550 so that discharges match developed discharge durations to pre-developed durations for the range of pre-developed discharge rates from 50-percent of the two-year peak flow up to the full 50-year peak flow. The preliminary sizing has a target to infiltrate on flows onsite, with any unforeseen emergency overflows out letting to the City of Sultan existing conveyance system downstream of the project site. The WWHM 2012 Stormwater Program was used to size the stormwater basin. The WWHM calculations can be found at the end of this section.
Preliminary Water Quality Calculations: All on-site PGIS runoff will be treated using basic water quality measures. Preliminary Biofiltration Swale Calculations: The preliminary water quality rates were calculated using the 15-min water-quality flow rate as determined upstream of the infiltration basin in Storm Tract 999. The Water Quality Flow rate was determined by WWHM to be 0.197 cfs. Water quality will be treated with basic measures upstream of the infiltration basin with a pre-settling basin, vault or stormfilter cartridges or other means. Water quality measures will be finalized following the preliminary plat submittal. Preliminary Upstream Pre Treatmeant / Filtration Vault Calculations: If a filtration vault / oil water separator is allowed and / or required, it will be designed following the preliminary plat submittal.
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WWHM2012 PROJECT REPORT ___________________________________________________________________ Project Name: RCD-17.001-S9L-FOS-3.0-Rock Site Name: Stacy MacGregor 9 Lot Short Plat Site Address: 1st Street City : Sultan Report Date: 12/11/2017 Gage : Everett Data Start : 1948/10/01 Data End : 2009/09/30 Precip Scale: 1.40 Version Date: 2017/04/14 Version : 4.2.13 ___________________________________________________________________ Low Flow Threshold for POC 1 : 50 Percent of the 2 Year ___________________________________________________________________ High Flow Threshold for POC 1: 50 year ___________________________________________________________________ PREDEVELOPED LAND USE Name : Basin Bypass: No
1
GroundWater: No Pervious Land Use A B, Forest, Flat Pervious Total Impervious Land Use
acre 1.906 1.906 acre
Impervious Total
0
Basin Total
1.906
___________________________________________________________________ Element Flows To: Surface
Interflow
Groundwater
___________________________________________________________________ MITIGATED LAND USE Name : Lot 1 Bypass: No GroundWater: No
Pervious Land Use A B, Lawn, Flat A B, Lawn, Mod Pervious Total Impervious Land Use ROOF TOPS FLAT DRIVEWAYS FLAT
acre .12 .004 0.124 acre 0.1 0.087
Impervious Total
0.187
Basin Total
0.311
___________________________________________________________________ Element Flows To: Surface Interflow Groundwater Bottom of Pond InfiltrBottom of Pond Infiltr ___________________________________________________________________ Name : InfilTrnch 2 Bottom Length: 10.00 ft. Bottom Width: 2.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 3 Pour Space of material for first layer: 0.33 Material thickness of second layer: 1.5 Pour Space of material for second layer: 0.1 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Discharge Structure Riser Height: 2.5 ft. Riser Diameter: 12 in. Element Flows To: Outlet 1 Outlet 2 Bottom of Pond Infiltr ___________________________________________________________________
Gravel Trench Bed Hydraulic Table Stage(feet)
0.0000 0.0500 0.1000 0.1500 0.2000 0.2500 0.3000 0.3500 0.4000
Area(ac.)
0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459
Volume(ac-ft.) Discharge(cfs) Infilt(cfs)
0.000000 0.000008 0.000015 0.000023 0.000030 0.000038 0.000045 0.000053 0.000061
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
0.4500 0.5000 0.5500 0.6000 0.6500 0.7000 0.7500 0.8000 0.8500 0.9000 0.9500 1.0000 1.0500 1.1000 1.1500 1.2000 1.2500 1.3000 1.3500 1.4000 1.4500 1.5000 1.5500 1.6000 1.6500 1.7000 1.7500 1.8000 1.8500 1.9000 1.9500 2.0000 2.0500 2.1000 2.1500 2.2000 2.2500 2.3000 2.3500 2.4000 2.4500 2.5000 2.5500 2.6000 2.6500 2.7000 2.7500 2.8000 2.8500 2.9000 2.9500 3.0000 3.0500 3.1000 3.1500 3.2000 3.2500
0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459
0.000068 0.000076 0.000083 0.000091 0.000098 0.000106 0.000114 0.000121 0.000129 0.000136 0.000144 0.000152 0.000159 0.000167 0.000174 0.000182 0.000189 0.000197 0.000205 0.000212 0.000220 0.000227 0.000235 0.000242 0.000250 0.000258 0.000265 0.000273 0.000280 0.000288 0.000295 0.000303 0.000311 0.000318 0.000326 0.000333 0.000341 0.000348 0.000356 0.000364 0.000371 0.000379 0.000386 0.000394 0.000402 0.000409 0.000417 0.000424 0.000432 0.000439 0.000447 0.000455 0.000457 0.000459 0.000461 0.000464 0.000466
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 0.118 0.333 0.604 0.907 1.217 1.509 1.762 1.960 2.101 2.203 2.335 2.439 2.539 2.635 2.727
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 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
3.3000 0.000459 0.000468 2.817 0.000 3.3500 0.000459 0.000471 2.903 0.000 3.4000 0.000459 0.000473 2.988 0.000 3.4500 0.000459 0.000475 3.069 0.000 3.5000 0.000459 0.000478 3.149 0.000 3.5500 0.000459 0.000480 3.227 0.000 3.6000 0.000459 0.000482 3.303 0.000 3.6500 0.000459 0.000484 3.377 0.000 3.7000 0.000459 0.000487 3.450 0.000 3.7500 0.000459 0.000489 3.521 0.000 3.8000 0.000459 0.000491 3.591 0.000 3.8500 0.000459 0.000494 3.659 0.000 3.9000 0.000459 0.000496 3.726 0.000 3.9500 0.000459 0.000498 3.792 0.000 4.0000 0.000459 0.000500 3.857 0.000 4.0500 0.000459 0.000503 3.921 0.000 4.1000 0.000459 0.000505 3.984 0.000 4.1500 0.000459 0.000507 4.045 0.000 4.2000 0.000459 0.000510 4.106 0.000 4.2500 0.000459 0.000512 4.166 0.000 4.3000 0.000459 0.000514 4.225 0.000 4.3500 0.000459 0.000517 4.284 0.000 4.4000 0.000459 0.000519 4.341 0.000 4.4500 0.000459 0.000521 4.398 0.000 4.5000 0.000459 0.000523 4.454 0.000 ___________________________________________________________________ Name : Lot 2 Bypass: No GroundWater: No Pervious Land Use A B, Lawn, Flat A B, Lawn, Mod Pervious Total Impervious Land Use ROOF TOPS FLAT DRIVEWAYS FLAT
acre .03 .003 0.033 acre 0.04 0.01
Impervious Total
0.05
Basin Total
0.083
___________________________________________________________________ Element Flows To: Surface Interflow Groundwater InfilTrnch 2 InfilTrnch 2 ___________________________________________________________________ Name : Lot 3 Bypass: No
GroundWater: No Pervious Land Use A B, Lawn, Flat A B, Lawn, Mod Pervious Total Impervious Land Use ROOF TOPS FLAT DRIVEWAYS FLAT
acre .03 .003 0.033 acre 0.04 0.01
Impervious Total
0.05
Basin Total
0.083
___________________________________________________________________ Element Flows To: Surface Interflow Groundwater InfilTrnch 3 InfilTrnch 3 ___________________________________________________________________ Name : Lot 4 Bypass: No GroundWater: No Pervious Land Use A B, Lawn, Flat A B, Lawn, Mod Pervious Total Impervious Land Use ROOF TOPS FLAT DRIVEWAYS FLAT
acre .03 .003 0.033 acre 0.04 0.01
Impervious Total
0.05
Basin Total
0.083
___________________________________________________________________ Element Flows To: Surface Interflow Groundwater InfilTrnch 4 InfilTrnch 4 ___________________________________________________________________ Name : InfilTrnch 3 Bottom Length: 10.00 ft. Bottom Width: 2.00 ft.
Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 3 Pour Space of material for first layer: 0.33 Material thickness of second layer: 1.5 Pour Space of material for second layer: 0.1 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Discharge Structure Riser Height: 2.5 ft. Riser Diameter: 12 in. Element Flows To: Outlet 1 Outlet 2 Bottom of Pond Infiltr ___________________________________________________________________
Gravel Trench Bed Hydraulic Table Stage(feet)
0.0000 0.0500 0.1000 0.1500 0.2000 0.2500 0.3000 0.3500 0.4000 0.4500 0.5000 0.5500 0.6000 0.6500 0.7000 0.7500 0.8000 0.8500 0.9000 0.9500 1.0000 1.0500 1.1000 1.1500 1.2000 1.2500 1.3000 1.3500 1.4000 1.4500 1.5000 1.5500 1.6000 1.6500 1.7000
Area(ac.)
0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459
Volume(ac-ft.) Discharge(cfs) Infilt(cfs)
0.000000 0.000008 0.000015 0.000023 0.000030 0.000038 0.000045 0.000053 0.000061 0.000068 0.000076 0.000083 0.000091 0.000098 0.000106 0.000114 0.000121 0.000129 0.000136 0.000144 0.000152 0.000159 0.000167 0.000174 0.000182 0.000189 0.000197 0.000205 0.000212 0.000220 0.000227 0.000235 0.000242 0.000250 0.000258
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 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
1.7500 0.000459 0.000265 0.000 0.000 1.8000 0.000459 0.000273 0.000 0.000 1.8500 0.000459 0.000280 0.000 0.000 1.9000 0.000459 0.000288 0.000 0.000 1.9500 0.000459 0.000295 0.000 0.000 2.0000 0.000459 0.000303 0.000 0.000 2.0500 0.000459 0.000311 0.000 0.000 2.1000 0.000459 0.000318 0.000 0.000 2.1500 0.000459 0.000326 0.000 0.000 2.2000 0.000459 0.000333 0.000 0.000 2.2500 0.000459 0.000341 0.000 0.000 2.3000 0.000459 0.000348 0.000 0.000 2.3500 0.000459 0.000356 0.000 0.000 2.4000 0.000459 0.000364 0.000 0.000 2.4500 0.000459 0.000371 0.000 0.000 2.5000 0.000459 0.000379 0.000 0.000 2.5500 0.000459 0.000386 0.118 0.000 2.6000 0.000459 0.000394 0.333 0.000 2.6500 0.000459 0.000402 0.604 0.000 2.7000 0.000459 0.000409 0.907 0.000 2.7500 0.000459 0.000417 1.217 0.000 2.8000 0.000459 0.000424 1.509 0.000 2.8500 0.000459 0.000432 1.762 0.000 2.9000 0.000459 0.000439 1.960 0.000 2.9500 0.000459 0.000447 2.101 0.000 3.0000 0.000459 0.000455 2.203 0.000 3.0500 0.000459 0.000457 2.335 0.000 3.1000 0.000459 0.000459 2.439 0.000 3.1500 0.000459 0.000461 2.539 0.000 3.2000 0.000459 0.000464 2.635 0.000 3.2500 0.000459 0.000466 2.727 0.000 3.3000 0.000459 0.000468 2.817 0.000 3.3500 0.000459 0.000471 2.903 0.000 3.4000 0.000459 0.000473 2.988 0.000 3.4500 0.000459 0.000475 3.069 0.000 3.5000 0.000459 0.000478 3.149 0.000 3.5500 0.000459 0.000480 3.227 0.000 3.6000 0.000459 0.000482 3.303 0.000 3.6500 0.000459 0.000484 3.377 0.000 3.7000 0.000459 0.000487 3.450 0.000 3.7500 0.000459 0.000489 3.521 0.000 3.8000 0.000459 0.000491 3.591 0.000 3.8500 0.000459 0.000494 3.659 0.000 3.9000 0.000459 0.000496 3.726 0.000 3.9500 0.000459 0.000498 3.792 0.000 4.0000 0.000459 0.000500 3.857 0.000 4.0500 0.000459 0.000503 3.921 0.000 4.1000 0.000459 0.000505 3.984 0.000 4.1500 0.000459 0.000507 4.045 0.000 4.2000 0.000459 0.000510 4.106 0.000 4.2500 0.000459 0.000512 4.166 0.000 4.3000 0.000459 0.000514 4.225 0.000 4.3500 0.000459 0.000517 4.284 0.000 4.4000 0.000459 0.000519 4.341 0.000 4.4500 0.000459 0.000521 4.398 0.000 4.5000 0.000459 0.000523 4.454 0.000 ___________________________________________________________________
Name : InfilTrnch 4 Bottom Length: 10.00 ft. Bottom Width: 2.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 3 Pour Space of material for first layer: 0.33 Material thickness of second layer: 1.5 Pour Space of material for second layer: 0.1 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Discharge Structure Riser Height: 2.5 ft. Riser Diameter: 12 in. Element Flows To: Outlet 1 Outlet 2 Bottom of Pond Infiltr ___________________________________________________________________
Gravel Trench Bed Hydraulic Table Stage(feet)
0.0000 0.0500 0.1000 0.1500 0.2000 0.2500 0.3000 0.3500 0.4000 0.4500 0.5000 0.5500 0.6000 0.6500 0.7000 0.7500 0.8000 0.8500 0.9000 0.9500 1.0000 1.0500 1.1000 1.1500 1.2000 1.2500 1.3000 1.3500 1.4000 1.4500 1.5000
Area(ac.)
0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459
Volume(ac-ft.) Discharge(cfs) Infilt(cfs)
0.000000 0.000008 0.000015 0.000023 0.000030 0.000038 0.000045 0.000053 0.000061 0.000068 0.000076 0.000083 0.000091 0.000098 0.000106 0.000114 0.000121 0.000129 0.000136 0.000144 0.000152 0.000159 0.000167 0.000174 0.000182 0.000189 0.000197 0.000205 0.000212 0.000220 0.000227
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 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
1.5500 1.6000 1.6500 1.7000 1.7500 1.8000 1.8500 1.9000 1.9500 2.0000 2.0500 2.1000 2.1500 2.2000 2.2500 2.3000 2.3500 2.4000 2.4500 2.5000 2.5500 2.6000 2.6500 2.7000 2.7500 2.8000 2.8500 2.9000 2.9500 3.0000 3.0500 3.1000 3.1500 3.2000 3.2500 3.3000 3.3500 3.4000 3.4500 3.5000 3.5500 3.6000 3.6500 3.7000 3.7500 3.8000 3.8500 3.9000 3.9500 4.0000 4.0500 4.1000 4.1500 4.2000 4.2500 4.3000 4.3500
0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459
0.000235 0.000242 0.000250 0.000258 0.000265 0.000273 0.000280 0.000288 0.000295 0.000303 0.000311 0.000318 0.000326 0.000333 0.000341 0.000348 0.000356 0.000364 0.000371 0.000379 0.000386 0.000394 0.000402 0.000409 0.000417 0.000424 0.000432 0.000439 0.000447 0.000455 0.000457 0.000459 0.000461 0.000464 0.000466 0.000468 0.000471 0.000473 0.000475 0.000478 0.000480 0.000482 0.000484 0.000487 0.000489 0.000491 0.000494 0.000496 0.000498 0.000500 0.000503 0.000505 0.000507 0.000510 0.000512 0.000514 0.000517
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 0.118 0.333 0.604 0.907 1.217 1.509 1.762 1.960 2.101 2.203 2.335 2.439 2.539 2.635 2.727 2.817 2.903 2.988 3.069 3.149 3.227 3.303 3.377 3.450 3.521 3.591 3.659 3.726 3.792 3.857 3.921 3.984 4.045 4.106 4.166 4.225 4.284
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 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
4.4000 0.000459 0.000519 4.341 0.000 4.4500 0.000459 0.000521 4.398 0.000 4.5000 0.000459 0.000523 4.454 0.000 ___________________________________________________________________ Name : Lot 5 Bypass: No GroundWater: No Pervious Land Use A B, Lawn, Flat A B, Lawn, Mod Pervious Total Impervious Land Use ROOF TOPS FLAT DRIVEWAYS FLAT
acre .06 .008 0.068 acre 0.08 0.021
Impervious Total
0.101
Basin Total
0.169
___________________________________________________________________ Element Flows To: Surface Interflow Groundwater InfilTrnch 5 InfilTrnch 5 ___________________________________________________________________ Name : InfilTrnch 5 Bottom Length: 10.00 ft. Bottom Width: 2.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 3 Pour Space of material for first layer: 0.33 Material thickness of second layer: 1.5 Pour Space of material for second layer: 0.1 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Discharge Structure Riser Height: 2.5 ft. Riser Diameter: 12 in. Element Flows To: Outlet 1 Outlet 2 Bottom of Pond Infiltr ___________________________________________________________________
Gravel Trench Bed Hydraulic Table
Stage(feet)
0.0000 0.0500 0.1000 0.1500 0.2000 0.2500 0.3000 0.3500 0.4000 0.4500 0.5000 0.5500 0.6000 0.6500 0.7000 0.7500 0.8000 0.8500 0.9000 0.9500 1.0000 1.0500 1.1000 1.1500 1.2000 1.2500 1.3000 1.3500 1.4000 1.4500 1.5000 1.5500 1.6000 1.6500 1.7000 1.7500 1.8000 1.8500 1.9000 1.9500 2.0000 2.0500 2.1000 2.1500 2.2000 2.2500 2.3000 2.3500 2.4000 2.4500 2.5000 2.5500 2.6000 2.6500 2.7000 2.7500
Area(ac.)
0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459
Volume(ac-ft.) Discharge(cfs) Infilt(cfs)
0.000000 0.000008 0.000015 0.000023 0.000030 0.000038 0.000045 0.000053 0.000061 0.000068 0.000076 0.000083 0.000091 0.000098 0.000106 0.000114 0.000121 0.000129 0.000136 0.000144 0.000152 0.000159 0.000167 0.000174 0.000182 0.000189 0.000197 0.000205 0.000212 0.000220 0.000227 0.000235 0.000242 0.000250 0.000258 0.000265 0.000273 0.000280 0.000288 0.000295 0.000303 0.000311 0.000318 0.000326 0.000333 0.000341 0.000348 0.000356 0.000364 0.000371 0.000379 0.000386 0.000394 0.000402 0.000409 0.000417
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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.118 0.333 0.604 0.907 1.217
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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
2.8000 0.000459 0.000424 1.509 0.000 2.8500 0.000459 0.000432 1.762 0.000 2.9000 0.000459 0.000439 1.960 0.000 2.9500 0.000459 0.000447 2.101 0.000 3.0000 0.000459 0.000455 2.203 0.000 3.0500 0.000459 0.000457 2.335 0.000 3.1000 0.000459 0.000459 2.439 0.000 3.1500 0.000459 0.000461 2.539 0.000 3.2000 0.000459 0.000464 2.635 0.000 3.2500 0.000459 0.000466 2.727 0.000 3.3000 0.000459 0.000468 2.817 0.000 3.3500 0.000459 0.000471 2.903 0.000 3.4000 0.000459 0.000473 2.988 0.000 3.4500 0.000459 0.000475 3.069 0.000 3.5000 0.000459 0.000478 3.149 0.000 3.5500 0.000459 0.000480 3.227 0.000 3.6000 0.000459 0.000482 3.303 0.000 3.6500 0.000459 0.000484 3.377 0.000 3.7000 0.000459 0.000487 3.450 0.000 3.7500 0.000459 0.000489 3.521 0.000 3.8000 0.000459 0.000491 3.591 0.000 3.8500 0.000459 0.000494 3.659 0.000 3.9000 0.000459 0.000496 3.726 0.000 3.9500 0.000459 0.000498 3.792 0.000 4.0000 0.000459 0.000500 3.857 0.000 4.0500 0.000459 0.000503 3.921 0.000 4.1000 0.000459 0.000505 3.984 0.000 4.1500 0.000459 0.000507 4.045 0.000 4.2000 0.000459 0.000510 4.106 0.000 4.2500 0.000459 0.000512 4.166 0.000 4.3000 0.000459 0.000514 4.225 0.000 4.3500 0.000459 0.000517 4.284 0.000 4.4000 0.000459 0.000519 4.341 0.000 4.4500 0.000459 0.000521 4.398 0.000 4.5000 0.000459 0.000523 4.454 0.000 ___________________________________________________________________ Name : Lot 6 Bypass: No GroundWater: No Pervious Land Use A B, Lawn, Flat A B, Lawn, Mod Pervious Total Impervious Land Use ROOF TOPS FLAT DRIVEWAYS FLAT
acre .06 .005 0.065 acre 0.08 0.016
Impervious Total
0.096
Basin Total
0.161
___________________________________________________________________
Element Flows To: Surface Interflow Groundwater InfilTrnch 6 InfilTrnch 6 ___________________________________________________________________ Name : InfilTrnch 6 Bottom Length: 10.00 ft. Bottom Width: 2.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 3 Pour Space of material for first layer: 0.33 Material thickness of second layer: 1.5 Pour Space of material for second layer: 0.1 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Discharge Structure Riser Height: 2.5 ft. Riser Diameter: 12 in. Element Flows To: Outlet 1 Outlet 2 Bottom of Pond Infiltr ___________________________________________________________________
Gravel Trench Bed Hydraulic Table Stage(feet)
0.0000 0.0500 0.1000 0.1500 0.2000 0.2500 0.3000 0.3500 0.4000 0.4500 0.5000 0.5500 0.6000 0.6500 0.7000 0.7500 0.8000 0.8500 0.9000 0.9500 1.0000 1.0500 1.1000 1.1500
Area(ac.)
0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459
Volume(ac-ft.) Discharge(cfs) Infilt(cfs)
0.000000 0.000008 0.000015 0.000023 0.000030 0.000038 0.000045 0.000053 0.000061 0.000068 0.000076 0.000083 0.000091 0.000098 0.000106 0.000114 0.000121 0.000129 0.000136 0.000144 0.000152 0.000159 0.000167 0.000174
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 0.000 0.000 0.000 0.000
1.2000 1.2500 1.3000 1.3500 1.4000 1.4500 1.5000 1.5500 1.6000 1.6500 1.7000 1.7500 1.8000 1.8500 1.9000 1.9500 2.0000 2.0500 2.1000 2.1500 2.2000 2.2500 2.3000 2.3500 2.4000 2.4500 2.5000 2.5500 2.6000 2.6500 2.7000 2.7500 2.8000 2.8500 2.9000 2.9500 3.0000 3.0500 3.1000 3.1500 3.2000 3.2500 3.3000 3.3500 3.4000 3.4500 3.5000 3.5500 3.6000 3.6500 3.7000 3.7500 3.8000 3.8500 3.9000 3.9500 4.0000
0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459
0.000182 0.000189 0.000197 0.000205 0.000212 0.000220 0.000227 0.000235 0.000242 0.000250 0.000258 0.000265 0.000273 0.000280 0.000288 0.000295 0.000303 0.000311 0.000318 0.000326 0.000333 0.000341 0.000348 0.000356 0.000364 0.000371 0.000379 0.000386 0.000394 0.000402 0.000409 0.000417 0.000424 0.000432 0.000439 0.000447 0.000455 0.000457 0.000459 0.000461 0.000464 0.000466 0.000468 0.000471 0.000473 0.000475 0.000478 0.000480 0.000482 0.000484 0.000487 0.000489 0.000491 0.000494 0.000496 0.000498 0.000500
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 0.118 0.333 0.604 0.907 1.217 1.509 1.762 1.960 2.101 2.203 2.335 2.439 2.539 2.635 2.727 2.817 2.903 2.988 3.069 3.149 3.227 3.303 3.377 3.450 3.521 3.591 3.659 3.726 3.792 3.857
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 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
4.0500 0.000459 0.000503 3.921 0.000 4.1000 0.000459 0.000505 3.984 0.000 4.1500 0.000459 0.000507 4.045 0.000 4.2000 0.000459 0.000510 4.106 0.000 4.2500 0.000459 0.000512 4.166 0.000 4.3000 0.000459 0.000514 4.225 0.000 4.3500 0.000459 0.000517 4.284 0.000 4.4000 0.000459 0.000519 4.341 0.000 4.4500 0.000459 0.000521 4.398 0.000 4.5000 0.000459 0.000523 4.454 0.000 ___________________________________________________________________ Name : Lot 7 Bypass: No GroundWater: No Pervious Land Use A B, Lawn, Flat A B, Lawn, Mod Pervious Total Impervious Land Use ROOF TOPS FLAT DRIVEWAYS FLAT
acre .08 .017 0.097 acre 0.06 0.004
Impervious Total
0.064
Basin Total
0.161
___________________________________________________________________ Element Flows To: Surface Interflow Groundwater InfilTrnch 7 InfilTrnch 7 ___________________________________________________________________ Name : InfilTrnch 7 Bottom Length: 10.00 ft. Bottom Width: 2.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 3 Pour Space of material for first layer: 0.33 Material thickness of second layer: 1.5 Pour Space of material for second layer: 0.1 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Discharge Structure Riser Height: 2.5 ft. Riser Diameter: 12 in. Element Flows To:
Outlet 1 Outlet 2 InfilTrnch 6 ___________________________________________________________________
Gravel Trench Bed Hydraulic Table Stage(feet)
0.0000 0.0500 0.1000 0.1500 0.2000 0.2500 0.3000 0.3500 0.4000 0.4500 0.5000 0.5500 0.6000 0.6500 0.7000 0.7500 0.8000 0.8500 0.9000 0.9500 1.0000 1.0500 1.1000 1.1500 1.2000 1.2500 1.3000 1.3500 1.4000 1.4500 1.5000 1.5500 1.6000 1.6500 1.7000 1.7500 1.8000 1.8500 1.9000 1.9500 2.0000 2.0500 2.1000 2.1500 2.2000 2.2500 2.3000 2.3500 2.4000
Area(ac.)
0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459
Volume(ac-ft.) Discharge(cfs) Infilt(cfs)
0.000000 0.000008 0.000015 0.000023 0.000030 0.000038 0.000045 0.000053 0.000061 0.000068 0.000076 0.000083 0.000091 0.000098 0.000106 0.000114 0.000121 0.000129 0.000136 0.000144 0.000152 0.000159 0.000167 0.000174 0.000182 0.000189 0.000197 0.000205 0.000212 0.000220 0.000227 0.000235 0.000242 0.000250 0.000258 0.000265 0.000273 0.000280 0.000288 0.000295 0.000303 0.000311 0.000318 0.000326 0.000333 0.000341 0.000348 0.000356 0.000364
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 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
2.4500 0.000459 0.000371 0.000 0.000 2.5000 0.000459 0.000379 0.000 0.000 2.5500 0.000459 0.000386 0.118 0.000 2.6000 0.000459 0.000394 0.333 0.000 2.6500 0.000459 0.000402 0.604 0.000 2.7000 0.000459 0.000409 0.907 0.000 2.7500 0.000459 0.000417 1.217 0.000 2.8000 0.000459 0.000424 1.509 0.000 2.8500 0.000459 0.000432 1.762 0.000 2.9000 0.000459 0.000439 1.960 0.000 2.9500 0.000459 0.000447 2.101 0.000 3.0000 0.000459 0.000455 2.203 0.000 3.0500 0.000459 0.000457 2.335 0.000 3.1000 0.000459 0.000459 2.439 0.000 3.1500 0.000459 0.000461 2.539 0.000 3.2000 0.000459 0.000464 2.635 0.000 3.2500 0.000459 0.000466 2.727 0.000 3.3000 0.000459 0.000468 2.817 0.000 3.3500 0.000459 0.000471 2.903 0.000 3.4000 0.000459 0.000473 2.988 0.000 3.4500 0.000459 0.000475 3.069 0.000 3.5000 0.000459 0.000478 3.149 0.000 3.5500 0.000459 0.000480 3.227 0.000 3.6000 0.000459 0.000482 3.303 0.000 3.6500 0.000459 0.000484 3.377 0.000 3.7000 0.000459 0.000487 3.450 0.000 3.7500 0.000459 0.000489 3.521 0.000 3.8000 0.000459 0.000491 3.591 0.000 3.8500 0.000459 0.000494 3.659 0.000 3.9000 0.000459 0.000496 3.726 0.000 3.9500 0.000459 0.000498 3.792 0.000 4.0000 0.000459 0.000500 3.857 0.000 4.0500 0.000459 0.000503 3.921 0.000 4.1000 0.000459 0.000505 3.984 0.000 4.1500 0.000459 0.000507 4.045 0.000 4.2000 0.000459 0.000510 4.106 0.000 4.2500 0.000459 0.000512 4.166 0.000 4.3000 0.000459 0.000514 4.225 0.000 4.3500 0.000459 0.000517 4.284 0.000 4.4000 0.000459 0.000519 4.341 0.000 4.4500 0.000459 0.000521 4.398 0.000 4.5000 0.000459 0.000523 4.454 0.000 ___________________________________________________________________ Name : InfilTrnch 8 Bottom Length: 10.00 ft. Bottom Width: 2.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 3 Pour Space of material for first layer: 0.33 Material thickness of second layer: 1.5 Pour Space of material for second layer: 0.1 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Discharge Structure
Riser Height: 2.5 ft. Riser Diameter: 12 in. Element Flows To: Outlet 1 Outlet 2 Bottom of Pond Infiltr ___________________________________________________________________
Gravel Trench Bed Hydraulic Table Stage(feet)
0.0000 0.0500 0.1000 0.1500 0.2000 0.2500 0.3000 0.3500 0.4000 0.4500 0.5000 0.5500 0.6000 0.6500 0.7000 0.7500 0.8000 0.8500 0.9000 0.9500 1.0000 1.0500 1.1000 1.1500 1.2000 1.2500 1.3000 1.3500 1.4000 1.4500 1.5000 1.5500 1.6000 1.6500 1.7000 1.7500 1.8000 1.8500 1.9000 1.9500 2.0000 2.0500 2.1000 2.1500 2.2000
Area(ac.)
0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459
Volume(ac-ft.) Discharge(cfs) Infilt(cfs)
0.000000 0.000008 0.000015 0.000023 0.000030 0.000038 0.000045 0.000053 0.000061 0.000068 0.000076 0.000083 0.000091 0.000098 0.000106 0.000114 0.000121 0.000129 0.000136 0.000144 0.000152 0.000159 0.000167 0.000174 0.000182 0.000189 0.000197 0.000205 0.000212 0.000220 0.000227 0.000235 0.000242 0.000250 0.000258 0.000265 0.000273 0.000280 0.000288 0.000295 0.000303 0.000311 0.000318 0.000326 0.000333
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 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 0.000 0.000
2.2500 0.000459 0.000341 0.000 0.000 2.3000 0.000459 0.000348 0.000 0.000 2.3500 0.000459 0.000356 0.000 0.000 2.4000 0.000459 0.000364 0.000 0.000 2.4500 0.000459 0.000371 0.000 0.000 2.5000 0.000459 0.000379 0.000 0.000 2.5500 0.000459 0.000386 0.118 0.000 2.6000 0.000459 0.000394 0.333 0.000 2.6500 0.000459 0.000402 0.604 0.000 2.7000 0.000459 0.000409 0.907 0.000 2.7500 0.000459 0.000417 1.217 0.000 2.8000 0.000459 0.000424 1.509 0.000 2.8500 0.000459 0.000432 1.762 0.000 2.9000 0.000459 0.000439 1.960 0.000 2.9500 0.000459 0.000447 2.101 0.000 3.0000 0.000459 0.000455 2.203 0.000 3.0500 0.000459 0.000457 2.335 0.000 3.1000 0.000459 0.000459 2.439 0.000 3.1500 0.000459 0.000461 2.539 0.000 3.2000 0.000459 0.000464 2.635 0.000 3.2500 0.000459 0.000466 2.727 0.000 3.3000 0.000459 0.000468 2.817 0.000 3.3500 0.000459 0.000471 2.903 0.000 3.4000 0.000459 0.000473 2.988 0.000 3.4500 0.000459 0.000475 3.069 0.000 3.5000 0.000459 0.000478 3.149 0.000 3.5500 0.000459 0.000480 3.227 0.000 3.6000 0.000459 0.000482 3.303 0.000 3.6500 0.000459 0.000484 3.377 0.000 3.7000 0.000459 0.000487 3.450 0.000 3.7500 0.000459 0.000489 3.521 0.000 3.8000 0.000459 0.000491 3.591 0.000 3.8500 0.000459 0.000494 3.659 0.000 3.9000 0.000459 0.000496 3.726 0.000 3.9500 0.000459 0.000498 3.792 0.000 4.0000 0.000459 0.000500 3.857 0.000 4.0500 0.000459 0.000503 3.921 0.000 4.1000 0.000459 0.000505 3.984 0.000 4.1500 0.000459 0.000507 4.045 0.000 4.2000 0.000459 0.000510 4.106 0.000 4.2500 0.000459 0.000512 4.166 0.000 4.3000 0.000459 0.000514 4.225 0.000 4.3500 0.000459 0.000517 4.284 0.000 4.4000 0.000459 0.000519 4.341 0.000 4.4500 0.000459 0.000521 4.398 0.000 4.5000 0.000459 0.000523 4.454 0.000 ___________________________________________________________________ Name : InfilTrnch 9 Bottom Length: 10.00 ft. Bottom Width: 2.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 3 Pour Space of material for first layer: 0.33 Material thickness of second layer: 1.5
Pour Space of material for second layer: 0.1 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Discharge Structure Riser Height: 2.5 ft. Riser Diameter: 12 in. Element Flows To: Outlet 1 Outlet 2 InfilTrnch 8 ___________________________________________________________________
Gravel Trench Bed Hydraulic Table Stage(feet)
0.0000 0.0500 0.1000 0.1500 0.2000 0.2500 0.3000 0.3500 0.4000 0.4500 0.5000 0.5500 0.6000 0.6500 0.7000 0.7500 0.8000 0.8500 0.9000 0.9500 1.0000 1.0500 1.1000 1.1500 1.2000 1.2500 1.3000 1.3500 1.4000 1.4500 1.5000 1.5500 1.6000 1.6500 1.7000 1.7500 1.8000 1.8500 1.9000 1.9500 2.0000
Area(ac.)
0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459 0.000459
Volume(ac-ft.) Discharge(cfs) Infilt(cfs)
0.000000 0.000008 0.000015 0.000023 0.000030 0.000038 0.000045 0.000053 0.000061 0.000068 0.000076 0.000083 0.000091 0.000098 0.000106 0.000114 0.000121 0.000129 0.000136 0.000144 0.000152 0.000159 0.000167 0.000174 0.000182 0.000189 0.000197 0.000205 0.000212 0.000220 0.000227 0.000235 0.000242 0.000250 0.000258 0.000265 0.000273 0.000280 0.000288 0.000295 0.000303
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 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
2.0500 0.000459 0.000311 0.000 0.000 2.1000 0.000459 0.000318 0.000 0.000 2.1500 0.000459 0.000326 0.000 0.000 2.2000 0.000459 0.000333 0.000 0.000 2.2500 0.000459 0.000341 0.000 0.000 2.3000 0.000459 0.000348 0.000 0.000 2.3500 0.000459 0.000356 0.000 0.000 2.4000 0.000459 0.000364 0.000 0.000 2.4500 0.000459 0.000371 0.000 0.000 2.5000 0.000459 0.000379 0.000 0.000 2.5500 0.000459 0.000386 0.118 0.000 2.6000 0.000459 0.000394 0.333 0.000 2.6500 0.000459 0.000402 0.604 0.000 2.7000 0.000459 0.000409 0.907 0.000 2.7500 0.000459 0.000417 1.217 0.000 2.8000 0.000459 0.000424 1.509 0.000 2.8500 0.000459 0.000432 1.762 0.000 2.9000 0.000459 0.000439 1.960 0.000 2.9500 0.000459 0.000447 2.101 0.000 3.0000 0.000459 0.000455 2.203 0.000 3.0500 0.000459 0.000457 2.335 0.000 3.1000 0.000459 0.000459 2.439 0.000 3.1500 0.000459 0.000461 2.539 0.000 3.2000 0.000459 0.000464 2.635 0.000 3.2500 0.000459 0.000466 2.727 0.000 3.3000 0.000459 0.000468 2.817 0.000 3.3500 0.000459 0.000471 2.903 0.000 3.4000 0.000459 0.000473 2.988 0.000 3.4500 0.000459 0.000475 3.069 0.000 3.5000 0.000459 0.000478 3.149 0.000 3.5500 0.000459 0.000480 3.227 0.000 3.6000 0.000459 0.000482 3.303 0.000 3.6500 0.000459 0.000484 3.377 0.000 3.7000 0.000459 0.000487 3.450 0.000 3.7500 0.000459 0.000489 3.521 0.000 3.8000 0.000459 0.000491 3.591 0.000 3.8500 0.000459 0.000494 3.659 0.000 3.9000 0.000459 0.000496 3.726 0.000 3.9500 0.000459 0.000498 3.792 0.000 4.0000 0.000459 0.000500 3.857 0.000 4.0500 0.000459 0.000503 3.921 0.000 4.1000 0.000459 0.000505 3.984 0.000 4.1500 0.000459 0.000507 4.045 0.000 4.2000 0.000459 0.000510 4.106 0.000 4.2500 0.000459 0.000512 4.166 0.000 4.3000 0.000459 0.000514 4.225 0.000 4.3500 0.000459 0.000517 4.284 0.000 4.4000 0.000459 0.000519 4.341 0.000 4.4500 0.000459 0.000521 4.398 0.000 4.5000 0.000459 0.000523 4.454 0.000 ___________________________________________________________________ Name : Lot 8 Bypass: No GroundWater: No
Pervious Land Use A B, Lawn, Flat A B, Lawn, Mod Pervious Total Impervious Land Use ROOF TOPS FLAT DRIVEWAYS FLAT
acre .04 .018 0.058 acre 0.03 0.009
Impervious Total
0.039
Basin Total
0.097
___________________________________________________________________ Element Flows To: Surface Interflow Groundwater InfilTrnch 8 InfilTrnch 8 ___________________________________________________________________ Name : Lot 9 Bypass: No GroundWater: No Pervious Land Use A B, Lawn, Flat A B, Lawn, Mod Pervious Total Impervious Land Use ROOF TOPS FLAT DRIVEWAYS FLAT
acre .04 .012 0.052 acre 0.03 0.005
Impervious Total
0.035
Basin Total
0.087
___________________________________________________________________ Element Flows To: Surface Interflow Groundwater InfilTrnch 9 InfilTrnch 9 ___________________________________________________________________ Name : ROW-US-Trench Bypass: No GroundWater: No Pervious Land Use
acre
A B, Lawn, Flat A B, Lawn, Mod Pervious Total Impervious Land Use ROADS FLAT
.007 .004 0.011 acre 0.15
Impervious Total
0.15
Basin Total
0.161
___________________________________________________________________ Element Flows To: Surface Interflow Groundwater Bottom of Pond InfiltrBottom of Pond Infiltr ___________________________________________________________________ Name : Storm Tract Bypass: No GroundWater: No Pervious Land Use A B, Lawn, Flat A B, Lawn, Mod Pervious Total Impervious Land Use DRIVEWAYS MOD POND
acre .12 .005 0.125 acre 0.07 0.03
Impervious Total
0.1
Basin Total
0.225
___________________________________________________________________ Element Flows To: Surface Interflow Groundwater Bottom of Pond InfiltrBottom of Pond Infiltr ___________________________________________________________________ Name : ROW-DS-Trenc Bypass: No GroundWater: No Pervious Land Use A B, Lawn, Flat A B, Lawn, Mod
acre .007 .003
Pervious Total
0.01
Impervious Land Use ROADS FLAT
acre 0.149
Impervious Total
0.149
Basin Total
0.159
___________________________________________________________________ Element Flows To: Surface Interflow Groundwater Bottom of Pond InfiltrBottom of Pond Infiltr ___________________________________________________________________ Name : Bottom of Pond Infiltration Gallery Bottom Length: 110.00 ft. Bottom Width: 26.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 4 Pour Space of material for first layer: 0.33 Material thickness of second layer: 0 Pour Space of material for second layer: 0 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Infiltration On Infiltration rate: 12 Infiltration safety factor: 0.33333 Total Volume Infiltrated (ac-ft.): 193.747 Total Volume Through Riser (ac-ft.): 0.006 Total Volume Through Facility (ac-ft.): 193.753 Percent Infiltrated: 100 Total Precip Applied to Facility: 0 Total Evap From Facility: 1.556 Discharge Structure Riser Height: 3.5 ft. Riser Diameter: 5040 in. Element Flows To: Outlet 1
Outlet 2
___________________________________________________________________
Gravel Trench Bed Hydraulic Table Stage(feet)
0.0000 0.0444 0.0889 0.1333
Area(ac.)
0.065 0.065 0.065 0.065
Volume(ac-ft.) Discharge(cfs) Infilt(cfs)
0.000 0.001 0.001 0.002
0.000 0.000 0.000 0.000
0.000 0.264 0.264 0.264
0.1778 0.2222 0.2667 0.3111 0.3556 0.4000 0.4444 0.4889 0.5333 0.5778 0.6222 0.6667 0.7111 0.7556 0.8000 0.8444 0.8889 0.9333 0.9778 1.0222 1.0667 1.1111 1.1556 1.2000 1.2444 1.2889 1.3333 1.3778 1.4222 1.4667 1.5111 1.5556 1.6000 1.6444 1.6889 1.7333 1.7778 1.8222 1.8667 1.9111 1.9556 2.0000 2.0444 2.0889 2.1333 2.1778 2.2222 2.2667 2.3111 2.3556 2.4000 2.4444 2.4889 2.5333 2.5778 2.6222 2.6667
0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065 0.065
0.003 0.004 0.005 0.006 0.007 0.008 0.009 0.010 0.011 0.012 0.013 0.014 0.015 0.016 0.017 0.018 0.019 0.020 0.021 0.022 0.023 0.024 0.025 0.026 0.027 0.027 0.028 0.029 0.030 0.031 0.032 0.033 0.034 0.035 0.036 0.037 0.038 0.039 0.040 0.041 0.042 0.043 0.044 0.045 0.046 0.047 0.048 0.049 0.050 0.051 0.052 0.053 0.053 0.054 0.055 0.056 0.057
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 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
0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264 0.264
2.7111 0.065 0.058 0.000 0.264 2.7556 0.065 0.059 0.000 0.264 2.8000 0.065 0.060 0.000 0.264 2.8444 0.065 0.061 0.000 0.264 2.8889 0.065 0.062 0.000 0.264 2.9333 0.065 0.063 0.000 0.264 2.9778 0.065 0.064 0.000 0.264 3.0222 0.065 0.065 0.000 0.264 3.0667 0.065 0.066 0.000 0.264 3.1111 0.065 0.067 0.000 0.264 3.1556 0.065 0.068 0.000 0.264 3.2000 0.065 0.069 0.000 0.264 3.2444 0.065 0.070 0.000 0.264 3.2889 0.065 0.071 0.000 0.264 3.3333 0.065 0.072 0.000 0.264 3.3778 0.065 0.073 0.000 0.264 3.4222 0.065 0.074 0.000 0.264 3.4667 0.065 0.075 0.000 0.264 3.5111 0.065 0.076 5.225 0.264 3.5556 0.065 0.077 58.41 0.264 3.6000 0.065 0.078 141.0 0.264 3.6444 0.065 0.079 244.9 0.264 3.6889 0.065 0.079 366.2 0.264 3.7333 0.065 0.080 502.8 0.264 3.7778 0.065 0.081 653.1 0.264 3.8222 0.065 0.082 815.9 0.264 3.8667 0.065 0.083 990.4 0.264 3.9111 0.065 0.084 1175. 0.264 3.9556 0.065 0.085 1371. 0.264 4.0000 0.065 0.086 1577. 0.264 ___________________________________________________________________ ___________________________________________________________________ ANALYSIS RESULTS Stream Protection Duration ___________________________________________________________________ Predeveloped Landuse Totals for POC #1 Total Pervious Area:1.906 Total Impervious Area:0 ___________________________________________________________________ Mitigated Landuse Totals for POC #1 Total Pervious Area:0.437 Total Impervious Area:0.837 ___________________________________________________________________ Flow Frequency Return Periods for Predeveloped. Return Period Flow(cfs) 2 year 0.006736 5 year 0.021474 10 year 0.040905 25 year 0.083764 50 year 0.135298
POC #1
100 year
0.210589
Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0 5 year 0 10 year 0 25 year 0 50 year 0 100 year 0 ___________________________________________________________________ Stream Protection Duration Annual Peaks for Predeveloped and Mitigated. Year Predeveloped Mitigated 1949 0.001 0.000 1950 0.012 0.000 1951 0.016 0.000 1952 0.002 0.000 1953 0.002 0.000 1954 0.092 0.000 1955 0.035 0.000 1956 0.003 0.000 1957 0.006 0.000 1958 0.015 0.000 1959 0.015 0.000 1960 0.026 0.000 1961 0.038 0.137 1962 0.002 0.000 1963 0.003 0.000 1964 0.026 0.000 1965 0.003 0.000 1966 0.002 0.000 1967 0.020 0.000 1968 0.007 0.000 1969 0.019 0.000 1970 0.003 0.000 1971 0.039 0.000 1972 0.006 0.000 1973 0.004 0.000 1974 0.009 0.000 1975 0.005 0.000 1976 0.041 0.000 1977 0.002 0.000 1978 0.003 0.000 1979 0.061 0.000 1980 0.006 0.000 1981 0.003 0.000 1982 0.006 0.000 1983 0.003 0.000 1984 0.002 0.000 1985 0.024 0.000 1986 0.042 0.000 1987 0.021 0.000 1988 0.002 0.000 1989 0.009 0.000 1990 0.008 0.000
POC #1
1991 0.010 0.000 1992 0.002 0.000 1993 0.002 0.000 1994 0.002 0.000 1995 0.013 0.000 1996 0.042 0.000 1997 0.128 0.000 1998 0.002 0.000 1999 0.003 0.000 2000 0.033 0.000 2001 0.001 0.000 2002 0.002 0.000 2003 0.001 0.000 2004 0.001 0.000 2005 0.003 0.000 2006 0.150 0.000 2007 0.016 0.000 2008 0.016 0.000 2009 0.001 0.000 ___________________________________________________________________ Stream Protection Duration Ranked Annual Peaks for Predeveloped and Mitigated. Rank Predeveloped Mitigated 1 0.1498 0.1371 2 0.1285 0.0000 3 0.0924 0.0000 4 0.0611 0.0000 5 0.0423 0.0000 6 0.0418 0.0000 7 0.0408 0.0000 8 0.0394 0.0000 9 0.0384 0.0000 10 0.0349 0.0000 11 0.0328 0.0000 12 0.0259 0.0000 13 0.0256 0.0000 14 0.0244 0.0000 15 0.0210 0.0000 16 0.0204 0.0000 17 0.0186 0.0000 18 0.0163 0.0000 19 0.0161 0.0000 20 0.0158 0.0000 21 0.0151 0.0000 22 0.0145 0.0000 23 0.0126 0.0000 24 0.0119 0.0000 25 0.0099 0.0000 26 0.0095 0.0000 27 0.0086 0.0000 28 0.0080 0.0000 29 0.0074 0.0000 30 0.0062 0.0000 31 0.0060 0.0000 32 0.0058 0.0000 33 0.0058 0.0000
POC #1
34 0.0046 0.0000 35 0.0036 0.0000 36 0.0034 0.0000 37 0.0034 0.0000 38 0.0032 0.0000 39 0.0031 0.0000 40 0.0031 0.0000 41 0.0030 0.0000 42 0.0026 0.0000 43 0.0026 0.0000 44 0.0025 0.0000 45 0.0023 0.0000 46 0.0022 0.0000 47 0.0021 0.0000 48 0.0019 0.0000 49 0.0015 0.0000 50 0.0015 0.0000 51 0.0015 0.0000 52 0.0015 0.0000 53 0.0015 0.0000 54 0.0015 0.0000 55 0.0015 0.0000 56 0.0015 0.0000 57 0.0015 0.0000 58 0.0015 0.0000 59 0.0015 0.0000 60 0.0015 0.0000 61 0.0015 0.0000 ___________________________________________________________________ Stream Protection Duration POC #1 The Facility PASSED The Facility PASSED. Flow(cfs) 0.0034 0.0047 0.0060 0.0074 0.0087 0.0100 0.0114 0.0127 0.0140 0.0154 0.0167 0.0180 0.0194 0.0207 0.0220 0.0234 0.0247 0.0260 0.0274 0.0287
Predev 282 213 163 135 108 91 83 72 68 63 58 54 49 44 39 35 33 30 29 28
Mit Percentage Pass/Fail 4 1 Pass 4 1 Pass 4 2 Pass 4 2 Pass 4 3 Pass 4 4 Pass 4 4 Pass 3 4 Pass 3 4 Pass 3 4 Pass 3 5 Pass 3 5 Pass 3 6 Pass 3 6 Pass 3 7 Pass 3 8 Pass 3 9 Pass 3 10 Pass 3 10 Pass 3 10 Pass
0.0300 0.0314 0.0327 0.0340 0.0354 0.0367 0.0380 0.0393 0.0407 0.0420 0.0433 0.0447 0.0460 0.0473 0.0487 0.0500 0.0513 0.0527 0.0540 0.0553 0.0567 0.0580 0.0593 0.0607 0.0620 0.0633 0.0647 0.0660 0.0673 0.0687 0.0700 0.0713 0.0727 0.0740 0.0753 0.0767 0.0780 0.0793 0.0807 0.0820 0.0833 0.0847 0.0860 0.0873 0.0887 0.0900 0.0913 0.0927 0.0940 0.0953 0.0967 0.0980 0.0993 0.1006 0.1020 0.1033 0.1046
26 24 22 20 19 19 19 18 17 13 11 11 10 10 10 10 10 10 9 9 9 9 9 9 8 7 7 6 6 6 6 6 5 5 5 5 5 5 5 5 5 4 4 4 4 4 4 3 3 3 3 2 2 2 2 2 2
3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
11 12 13 15 15 15 15 16 17 23 27 27 30 30 30 30 30 30 33 33 33 33 33 33 37 42 42 50 50 50 50 50 40 40 40 40 20 20 20 20 20 25 25 25 25 25 25 33 33 33 33 50 50 50 50 50 50
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
0.1060 2 1 50 Pass 0.1073 2 1 50 Pass 0.1086 2 1 50 Pass 0.1100 2 1 50 Pass 0.1113 2 1 50 Pass 0.1126 2 1 50 Pass 0.1140 2 1 50 Pass 0.1153 2 1 50 Pass 0.1166 2 1 50 Pass 0.1180 2 1 50 Pass 0.1193 2 1 50 Pass 0.1206 2 1 50 Pass 0.1220 2 1 50 Pass 0.1233 2 1 50 Pass 0.1246 2 1 50 Pass 0.1260 2 1 50 Pass 0.1273 2 1 50 Pass 0.1286 1 1 100 Pass 0.1300 1 1 100 Pass 0.1313 1 1 100 Pass 0.1326 1 1 100 Pass 0.1340 1 1 100 Pass 0.1353 1 1 100 Pass _____________________________________________________ ___________________________________________________________________ Water Quality BMP Flow and Volume for POC #1 On-line facility volume: 0.1194 acre-feet On-line facility target flow: 0.1977 cfs. Adjusted for 15 min: 0.1977 cfs. Off-line facility target flow: 0.1114 cfs. Adjusted for 15 min: 0.1114 cfs.
___________________________________________________________________ LID Report LID Technique Percent Water Quality
Used for Total Volumn Volumn Percent Comment Treatment? Needs Through Volumn Water Quality Treatment Facility Infiltrated Treated (ac-ft) (ac-ft) Bottom of Pond Infiltration Ga N 176.40 InfilTrnch 2 N 10.62 0.00 InfilTrnch 3 N 10.62 0.00 InfilTrnch 4 N 10.62 0.00 InfilTrnch 5 N 21.46 0.00 Total Volume Infiltrated 229.73 0.00 76.74 0.00 0% No Treat. Credit Compliance with LID Standard 8 Duration Analysis Result = Passed
Infiltration
Cumulative
Volumn
Volumn
(ac-ft.)
Infiltration Credit N N N N N
0.00
___________________________________________________________________ Perlnd and Implnd Changes No changes have been made.
99.95
___________________________________________________________________ This program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim 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. or their authorized representatives have been advised of the possibility of such damages. Software Copyright © by : Clear Creek Solutions, Inc. 2005-2017; All Rights Reserved.
10)
Special Reports
The following special reports have been prepared for this project: Geotechnical Engineering Report: Onsite Analysis of Soils Prepared by: Geotest: Date: June 16, 2017 Summary: Infiltration feasible. Design rate 12 in/hr Recommended. (Pit test recommended for final design rate). Use Import Structural fill for foundation soils. Native re-use OK for lawn/other fill. Footing Drains 12” below floor slab grade. Road Section: Light Duty: 2-1/2” HMA over 6” CSBC(or 2”CSTC & 10” Gravel borrow) Heavy Duty: 4” HMA over 8” CSBC(or 2”CSTC & 12” Gravel borrow) Stormwater Pollutant Treatment: Near-surface soils suitable for onsite pollutant treatment. (poor infiltration in WQ soils).
The full Geotechnical report can be found on the following page.
RCD # 001 January, 2018
23 Drury Lane Development
GEOTECHNICAL REPORT THIS PAGE INTENTIONALLY LEFT BLANK – REPLACE THIS PAGE IN PDF WITH FULL GETECHNICAL REPORT
RCD # 001 January, 2018
24 Drury Lane Development
Environmental Study: Wetland Delineation Prepared by: Blue Heron Services Date: April 25th, 2017 Summary: No wetlands onsite.
RCD # 001 January, 2018
25 Drury Lane Development
B lue H eron Services Blue Heron Services Inc PO 393 Index WA 98256 360 793 7767 (phone)
[email protected]
4 25 2017 On site review Prepared for Stacy MacGregor 704 First Street, Sultan Tax # 28083200305500 Property Description SEC 32 TWP 28 RGE 08 BEG SE COR N1/2 SW1/4 NW1/4 SW1/4 TH W 180FT TPB TH N 180FT TH W 290FT M/L TH N 150FT M/L TO N LN SUB TH W 20FT TH S 150FT TH W 160FTTO W LN SUB TH S 180FT TO SW COR SD SUB TH EALG S LN SD SUB TO TPB LESS RDS & LESS R/W TO CITY OF SULTAN PER QCD AFN 200510200776 Size (gross)
2.02
To whom this may concern, On April 16, 2017 I visited the site at 704 1st Street in Sultan with the landowner to check for the presence of wetland identifying conditions. The site is an existing single family home with portions of the lot set aside for grazing in addition to the home and yard area. The site has a unique feature, defined in this topo map (below) from the Snohomish County map folio. An old historical swale in the center of the lot runs north to south with an elevation change of about 4 or 5 feet at the north line but only a few inches at the south. This preliminary site assessment included soil pits in areas of possible wetland conditions (hydric soils) based on the visual topography and vegetation. In this site the swale what attracts the first attention is the dense vegetation of buttercup (ranunculus repens). While the overall vegetation is FAC and FAC+ the soils do not bear any of the identifying criteria required for a wetland soil determination.
Stacy MacGregor Sultan WA
1
The soils pits were dug in three locations, at the bottom of the swale, from north to south. There were no reducing features, concretions or the other features which would indicate anaerobic soil conditions required to define a wetland. Soil pit #1 near the North lot line 10YR 5/2, 4/2 to a depth of 14” Soils were sandy loam to silty loam Vegetation was limited to Ranunculus repens, Rubus armeniacus (an invasive species rooting throughout the swale) a Acer circinatum, a dead Alnus rubra, and a holly (Ilex ssp) which are found in within the lot also.
Soil pit #2 mid lot near a debris pile 10YR 2/2, 3/1 to a depth of 14” No redox or reducing conditions were noted of any shade or color The matrix was consistent and even colored Vegetation did include a small shrub: Symphoricarpos albus, Prunus laurocerasus (invasive), holly (Ilex ssp)invasive. Also an Alnus rubra and Oemleria cerasiformis. No water was noted standing anywhere in the swale and the rains of the last days, weeks months have been record breaking throughout the winter.
Soil pit #3 south lot line area / swale is less defined 2.5YR 3/1, 4/2 to a depth of 14” Consistent silty loam, dry and loose This south half of the lot had more native trees then the rest of the lot as well as several orchard trees. Pseudotsuga menziesii, Tsuga heterophylla, Thuja plicata were all trees present in the general area (though none rooting in the base of the swale. The main issues with this lot will be the elevation change and required grading to fill the site. It does not appear this has been an active flood channel at any time in modern history, and the soils are very well draining. Sultan City Code: 17.10.130 Critical area study content requirements for streams or wetlands. This code defines the delineation of a wetland to be that system which identifies the edge of the wetland based on the State Manual for Identifying and Delineating Jurisdictional Wetlands. As such this site does not meet the criteria for a wetland.
Stacy MacGregor Sultan WA
2
As added information This map indicates the low laying feature, while not 100% accurately mapped, this does portray the elevation change on the lot.
NWI data
Site:
Off-site wetland related to the Sultan River to the west.
Stacy MacGregor Sultan WA
3
Flood Hazard Data Snohomish County Lidar folio Site
If you have any questions please feel free to contact me Kim Peterson Blue Heron Services Inc. PO 393 Index WA 98256 360 793 7767 (o) 425 327 5799 (c )
[email protected]
Stacy MacGregor Sultan WA
4
11)
Other Reports and Approvals
Mailbox Location Approval: From: City of Sultan Post Office: Dated: Mailbox location will be obtained following the preliminary plat application submittal.
12)
Operations and Maintenance Manual
The Drury Lane Development project will have a single water quality filtration facility upstream of the proposed infiltration basin. Maintenance of these drainage facilities shall be the responsibility of the Homeowner’s Association and should occur on an annual basis. The maintenance Standards for each applicable drainage facility will be provided in this section following the preliminary plat application submittal.
13)
Bond Quantity Worksheet
The bond quantity worksheet will be provided in this section following the preliminary plat application submittal.
RCD # 001 January, 2018
27 Drury Lane Development
