Agenda packet — Rancho Mirage City Council, December 4, 2025 (part 4 of 6)

PRELIMINARY HYDROLOGY STUDY
FOR TENTATIVE TRACT MAP 38971

PROJECT SITE LOCATION
The 20.05-acre 16 lot proposed Tentative Tract Map site is located on Peterson Road, west of Mirage Cove Drive, in the City of Rancho Mirage, County of Riverside, California. The proposed development site lies in Section 2, T5S, R5E, and SBBM, with APNs: 689-090-003, 689-130-004, -005, -013, -014, -017, -018 and 689-140-022.

PROJECT SITE DESCRIPTION
The project site is presently vacant. Existing elevations vary from 264 down to 257 with a slight slope. The site is entirely composed of Hydrologic Soil Type “A”. A Tentative Tract Map is proposed on this site. The project site area is in shaded Zone X, which is described as: “2% Annual Chance Flood Hazard, Areas of 1% annual chance flood with average depth less than one foot or with drainage areas of less than one square mile”. (See Riverside County Flood Insurance Rate Map numbers 06065C1589G and 06065C1595G, Effective August 28, 2008, in Reference Materials).

PURPOSE
Each proposed lot within the project site was separately analyzed for proposed condition basin capacity using Synthetic Unit Hydrograph Shortcut Method for the 1, 3, 6, and 24-hour duration 100-year storm event to determine the worst-case contributing runoff volume. This computed runoff volume was used to size a proposed retention basin for each lot as per City of Rancho Mirage Standard Detail 310 for Retention Basins. The runoff from each proposed onsite area would be directed via swale system to the proposed retention basin. Adjacent half street frontage was added to the runoff area of each lot.

METHODOLOGY
The materials included with this study are presented to satisfy the criteria set forth in the Riverside County Flood Control & Water Conservation District (RCFC & WCD) Hydrology Manual. The onsite/offsite post- developed condition design runoff volume was determined using the worst of the 1, 3, 6, and 24-hour duration storm for the 100-year event. Peak discharges of the 100-year storm event will be determined with the Rational Formula. Synthetic Unit Hydrograph (SUH) calculations were performed in accordance with RCFC & WCD criteria. The Hydrologic Soil Group area was determined with the Natural Resources Conservation Service’s National Cooperative Soil Survey (See Reference Material). Point precipitation frequency data was obtained with the National Oceanic and Atmospheric Administration’s (NOAA) Precipitation Frequency Data Server from Atlas 14 (See Reference Material.). The NOAA point precipitation data of the 100-year event will be plotted on a log-log plot to obtain the slope of intensity duration curve which will be used in the Rational Method analysis. Any necessary storm drains will be modeled with the computer modeling software, Hydraflow Storm Sewers Extensions for AutoCAD Civil3D 2024, by Autodesk, Inc. Any necessary storm drain inlets will be sized as per AutoCAD Hydraflow Express Extension, Version 12.
576

FOMOTOR ENGINEERING Preliminary Hydrology Study
Tentative Tract Map 38971

Page 2 ends

RESULT OF SYNTHETIC UNIT HYDROGRAPH ANALYSIS
Summary of results of the Synthetic Unit Hydrograph (SUH) analysis are as follows:

Please refer to the attached Hydrology Plan, and SUH Calculation Spreadsheets in the Reference Materials Proposed Onsite and Offsite Area Runoff to Basins

DISCUSSION
Basin infiltration was not used to size the retention basins. A percolation test will be performed in the future. The 1-hour storm was determined to be the worst case of the 1, 3, 6, and 24-hour duration 100-year storm events for the Synthetic Unit Hydrograph analysis. In general, each lot will have an independent retention basin sized to contain the 100-year 1-hour runoff from each respective lot as well as the adjacent half-street frontage. Each basin will be four to five feet deep with 3 to 1 side slopes and receive runoff from swale flow (See SUH Shortcut Calculations and Preliminary Hydrology Plan in the Reference Materials).

The impermeable area used for calculations was based on a 1-acre residential lot from Plate D-5.6 of the RCFC&WCD Hydrology Manual and the adjacent half-street frontage was added. The Runoff Index was selected from Plate D-5.5 (1 of 2) of the RCFC&WCD Hydrology Manual.

BASIN ID CONTRIBUTING

AREA (ACRES)
(STREET

OFFSITE

FRONTAGE

0.09AC)
STORM

FREQUENCY
(YEAR)

DURATION
(HOUR)
PEAK
RUNOFF

STORAGE

VOLUME VS

INFILTRATION
(CU-FT) -POST
DEV
BASIN

CAPACITY
(CU-FT)
BASIN
DEPTH
(FT)
PEAK
BASIN
WATER
DEPTH
(FT)
LOT 1 1.09(1.00+0.09) 100 1 7,307 8,996 4 3.25
LOT 2 1.16(1.07+0.09) 100 1 7,777 8,239 4 3.78
LOT 3 1.18(1.09+0.09) 100 1 7,911 8,239 4 3.84
LOT 4 1.18(1.09+0.09) 100 1 7,911 8,239 4 3.84
LOT 5 1.18(1.09+0.09) 100 1 7,911 8,239 4 3.84
LOT 6 1.25(1.16+0.09) 100 1 8,380 8,471 4 3.96
LOT 7 1.25(1.16+0.09) 100 1 8,380 8,471 4 3.96
LOT 8 1.07(0.98+0.09) 100 1 7,173 8,239 4 3.48
LOT 9 1.07(0.98+0.09) 100 1 7,173 8,239 4 3.48
LOT 10 1.23(1.14+0.09) 100 1 8,246 8,331 5 4.95
LOT 11 1.45(1.36+0.09) 100 1 9,721 9,830 5 4.94
LOT 12 1.64(1.55+0.09) 100 1 10,995 11,159 5 4.93
LOT 13 1.12(1.03+0.09) 100 1 7,508 8,239 4 3.65
LOT 14 1.12(1.03+0.09) 100 1 7,508 8,239 4 3.65
LOT 15 1.12(1.03+0.09) 100 1 7,508 8,239 4 3.65
LOT 16 1.11(1.02+0.09) 100 1 7,441 8,239 4 3.61
577

REFERENCE MATERIAL
578

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0 500 1,000 1,500 2,000250
Feet
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SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT

SPECIAL FLOOD

HAZARD AREAS
Without Base Flood Elevation (BFE)
Zone A, V, A99
With BFE or DepthZone AE, AO, AH, VE, AR
Regulatory Floodway

0.2% Annual Chance Flood Hazard, Areas
of 1% annual chance flood with average
depth less than one foot or with drainage
areas of less than one square mileZone X
Future Conditions 1% Annual
Chance Flood HazardZone X
Area with Reduced Flood Risk due to
Levee. See Notes.Zone X
Area with Flood Risk due to LeveeZone D
NO SCREEN Area of Minimal Flood Hazard Zone X
Area of Undetermined Flood HazardZone D
Channel, Culvert, or Storm Sewer
Levee, Dike, or Floodwall
Cross Sections with 1% Annual Chance

17.5 Water Surface Elevation
Coastal Transect
Coastal Transect Baseline
Profile Baseline
Hydrographic Feature
Base Flood Elevation Line (BFE)
Effective LOMRs
Limit of Study
Jurisdiction Boundary
Digital Data Available
No Digital Data Available
Unmapped
This map complies with FEMA's standards for the use of
digital flood maps if it is not void as described below.

The basemap shown complies with FEMA's basemap
accuracy standards
The flood hazard information is derived directly from the authoritative NFHL web services provided by FEMA. This map was exported on 6/11/2024 at 4:17 PM and does not
reflect changes or amendments subsequent to this date and time. The NFHL and effective information may change or
become superseded by new data over time.

This map image is void if the one or more of the following map elements do not appear: basemap imagery, flood zone labels, legend, scale bar, map creation date, community identifiers, FIRM panel number, and FIRM effective date. Map images for unmapped and unmodernized areas cannot be used for
regulatory purposes.

Legend

OTHER AREAS OF

FLOOD HAZARD

OTHER AREAS

GENERAL

STRUCTURES
OTHER

FEATURES

MAP PANELS
8 B 20.2
The pin displayed on the map is an approximate
point selected by the user and does not represent
an authoritative property location.
1:6,000
116°26'38"W 33°46'7"N
116°26'W 33°45'37"N
Basemap Imagery Source: USGS National Map 2023
580
FEMA
c:::::::::J
1111111

Hydrologic Soil Group—Riverside County, Coachella Valley Area, California (North Area)
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
1/4/2024

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551860 551920 551980 552040 552100 552160 552220
551860 551920 551980 552040 552100 552160 552220
33° 46' 14'' N
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°

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°

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33° 45' 57'' N
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°

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'

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'

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N
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 11N WGS84 0 100 200 400 600Feet
0 35 70 140 210Meters
Map Scale: 1:2,470 if printed on A portrait (8.5" x 11") sheet.

Soil Map may not be valid at this scale.
581USDA =

MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Rating Polygons
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Soil Rating Lines
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Soil Rating Points
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
The soil surveys that comprise your AOI were mapped at
1:24,000.

Warning: Soil Map may not be valid at this scale.

Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale.

Please rely on the bar scale on each map sheet for map
measurements.

Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:

Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required.

This product is generated from the USDA-NRCS certified data as of the version date(s) listed below.

Soil Survey Area: Riverside County, Coachella Valley Area, California
Survey Area Data: Version 15, Aug 30, 2023
Soil map units are labeled (as space allows) for map scales 1:50,000 or larger.

Date(s) aerial images were photographed: Mar 15, 2022—May 28, 2022
The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident.

Hydrologic Soil Group—Riverside County, Coachella Valley Area, California (North Area)
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
1/4/2024

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Hydrologic Soil Group
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI CpA Coachella fine sand, 0
to 2 percent slopes
A 13.0 100.0%
Totals for Area of Interest 13.0 100.0%
Description
Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms.

The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows:

Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission.

Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture.

These soils have a moderate rate of water transmission.

Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission.

Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission.

If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes.

Rating Options
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Hydrologic Soil Group—Riverside County, Coachella Valley Area, California North Area Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
1/4/2024

Page 3 of 4583 ends

USDA =

Hydrologic Soil Group—Riverside County, Coachella Valley Area, California (South Area)
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
1/4/2024

Page 1 of 4 ends

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551810 551840 551870 551900 551930 551960 551990 552020 552050 552080 552110 552140 552170 551810 551840 551870 551900 551930 551960 551990 552020 552050 552080 552110 552140 552170 33° 46' 0'' N
116
°

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'

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33° 46' 0'' N
116
°

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33° 45' 53'' N
11 6
°

2 6
'

2 5
'
'

W
33° 45' 53'' N
11 6
°

2 6
'

1 1
'
'

W
N
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 11N WGS84 0 50 100 200 300Feet
0 20 40 80 120Meters
Map Scale: 1:1,660 if printed on A landscape (11" x 8.5") sheet.

Soil Map may not be valid at this scale.
584USDA =

Warning: Soil Map may not be valid at this scale.

Please rely on the bar scale on each map sheet for map
measurements.

Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:

This product is generated from the USDA-NRCS certified data as of the version date(s) listed below.

Soil Survey Area: Riverside County, Coachella Valley Area, California
Survey Area Data: Version 15, Aug 30, 2023
Soil map units are labeled (as space allows) for map scales 1:50,000 or larger.

Hydrologic Soil Group—Riverside County, Coachella Valley Area, California (South Area)
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
1/4/2024

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D
D
D
D
D
D
D
D
,,..,,,.
,,..,,,.
□
■
■
□
□
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t-+-t
~
tllWI ,..,,.
~
•

Hydrologic Soil Group
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI CpA Coachella fine sand, 0
to 2 percent slopes
A 7.1 100.0%
Totals for Area of Interest 7.1 100.0%
Description
Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms.

The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows:

These soils have a moderate rate of water transmission.

Rating Options
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Hydrologic Soil Group—Riverside County, Coachella Valley Area, California South Area Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
1/4/2024

Page 3 of 4586 ends

USDA =

NOAA Atlas 14, Volume 6, Version 2
Location name: Rancho Mirage, California, USA*
Latitude: 33.767°, Longitude: -116.4389°
Elevation: 260 ft**
* source: ESRI Maps
** source: USGS

POINT PRECIPITATION FREQUENCY ESTIMATES
Sanja Perica, Sarah Dietz, Sarah Heim, Lillian Hiner, Kazungu Maitaria, Deborah Martin, Sandra Pavlovic, Ishani Roy, Carl Trypaluk, Dale Unruh, Fenglin Yan, Michael Yekta, Tan Zhao, Geoffrey Bonnin, Daniel Brewer, Li-Chuan Chen, Tye Parzybok, John Yarchoan NOAA, National Weather Service, Silver Spring, Maryland PF_tabular | PF_graphical | Maps_&_aerials
PF tabular
PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1 Duration Average recurrence interval (years)
1 2 5 10 25 50 100 200 500 1000
5-min 0.072
(0.060‑0.087)

0.117
(0.097‑0.142)

0.190
(0.157‑0.231)

0.260
(0.214‑0.319)

0.378
(0.301‑0.479)

0.488
(0.380‑0.632)

0.620
(0.471‑0.824)

0.800
(0.590‑1.09)

1.27 (0.901‑1.82)

1.81 (1.24‑2.68)
10-min 0.103
(0.086‑0.124)

0.168
(0.140‑0.203)

0.272
(0.226‑0.330)

0.373
(0.307‑0.458)

0.541
(0.431‑0.687)

0.699
(0.544‑0.906)

0.888
(0.675‑1.18)

1.15 (0.846‑1.57)

1.83 (1.29‑2.61)

2.60 (1.78‑3.84)
15-min 0.124
(0.104‑0.150)

0.203
(0.169‑0.246)

0.329
(0.273‑0.400)

0.451
(0.372‑0.553)

0.655
(0.521‑0.831)

0.845
(0.658‑1.10)

1.07 (0.816‑1.43)

1.39 (1.02‑1.90)

2.21 (1.56‑3.15)

3.14 (2.15‑4.65)
30-min 0.202
(0.169‑0.245)

0.330
(0.275‑0.400)

0.535
(0.444‑0.650)

0.734
(0.605‑0.900)

1.06 (0.848‑1.35)

1.38 (1.07‑1.78)

1.75 (1.33‑2.32)

2.26 (1.66‑3.09)

3.59 (2.54‑5.13)

5.12 (3.49‑7.56)
60-min 0.279
(0.233‑0.338)

0.455
(0.379‑0.552)

0.738
(0.613‑0.898)

1.01 (0.835‑1.24)

1.47 (1.17‑1.87)

1.90 (1.48‑2.46)

2.41 (1.83‑3.21)

3.12 (2.30‑4.26)

4.96 (3.51‑7.08)

7.06 (4.83‑10.4)
2-hr 0.374
(0.312‑0.453)

0.611
(0.509‑0.741)

0.969
(0.805‑1.18)

1.30 (1.07‑1.60)

1.82 (1.45‑2.31)

2.28 (1.77‑2.95)

2.80 (2.13‑3.72)

3.40 (2.51‑4.66)

5.01 (3.55‑7.15)

7.14 (4.87‑10.6)
3-hr 0.443
(0.369‑0.536)

0.721
(0.601‑0.875)

1.13 (0.940‑1.38)

1.50 (1.24‑1.84)

2.07 (1.65‑2.62)

2.56 (1.99‑3.31)

3.10 (2.36‑4.12)

3.72 (2.75‑5.09)

5.06 (3.58‑7.22)

7.21 (4.92‑10.7)
6-hr 0.593
(0.494‑0.718)

0.953
(0.794‑1.16)

1.47 (1.22‑1.79)

1.93 (1.59‑2.36)

2.60 (2.07‑3.30)

3.17 (2.47‑4.11)

3.79 (2.88‑5.04)

4.48 (3.31‑6.14)

5.51 (3.90‑7.86)

7.28 (4.97‑10.8)
12-hr 0.733
(0.611‑0.888)

1.16 (0.969‑1.41)

1.77 (1.47‑2.15)

2.30 (1.90‑2.82)

3.08 (2.45‑3.91)

3.72 (2.90‑4.83)

4.42 (3.36‑5.88)

5.19 (3.83‑7.10)

6.31 (4.46‑9.00)

7.35 (5.02‑10.9)
24-hr 0.867
(0.768‑1.00)

1.36 (1.20‑1.57)

2.06 (1.81‑2.38)

2.66 (2.33‑3.10)

3.54 (3.00‑4.26)

4.27 (3.54‑5.24)

5.05 (4.10‑6.36)

5.91 (4.66‑7.64)

7.16 (5.43‑9.63)

8.20 (6.02‑11.4)
2-day 0.996
(0.882‑1.15)

1.54 (1.36‑1.78)

2.32 (2.04‑2.68)

2.99 (2.62‑3.49)

3.98 (3.37‑4.80)

4.80 (3.99‑5.90)

5.69 (4.62‑7.16)

6.67 (5.26‑8.62)

8.09 (6.14‑10.9)

9.28 (6.81‑12.9)
3-day 1.06
(0.937‑1.22)

1.63 (1.44‑1.88)

2.44 (2.15‑2.83)

3.16 (2.76‑3.68)

4.21 (3.57‑5.07)

5.09 (4.23‑6.26)

6.05 (4.91‑7.62)

7.11 (5.62‑9.20)

8.67 (6.58‑11.7)

9.99 (7.33‑13.9)
4-day 1.09
(0.966‑1.26)

1.67 (1.48‑1.93)

2.51 (2.21‑2.90)

3.24 (2.84‑3.78)

4.33 (3.67‑5.22)

5.24 (4.35‑6.44)

6.24 (5.06‑7.85)

7.34 (5.80‑9.49)

8.97 (6.80‑12.1)

10.4 (7.59‑14.4)
7-day 1.19
(1.05‑1.37)

1.82 (1.61‑2.10)

2.73 (2.40‑3.16)

3.52 (3.08‑4.11)

4.71 (3.99‑5.67)

5.70 (4.73‑7.00)

6.78 (5.50‑8.54)

7.98 (6.30‑10.3)

9.76 (7.40‑13.1)

11.3 (8.25‑15.7)
10-day 1.26
(1.11‑1.45)

1.93 (1.70‑2.22)

2.89 (2.55‑3.34)

3.74 (3.27‑4.36)

5.00 (4.24‑6.02)

6.06 (5.03‑7.44)

7.21 (5.84‑9.07)

8.48 (6.70‑11.0)

10.4 (7.86‑14.0)

12.0 (8.77‑16.6)
20-day 1.38
(1.22‑1.60)

2.14 (1.89‑2.47)

3.23 (2.85‑3.74)

4.20 (3.67‑4.90)

5.65 (4.78‑6.80)

6.86 (5.70‑8.44)

8.20 (6.65‑10.3)

9.68 (7.64‑12.5)

11.9 (9.00‑16.0)

13.7 (10.1‑19.1)
30-day 1.55
(1.37‑1.79)

2.42 (2.14‑2.79)

3.68 (3.24‑4.26)

4.80 (4.20‑5.61)

6.49 (5.50‑7.82)

7.92 (6.57‑9.73)

9.48 (7.69‑11.9)

11.2 (8.86‑14.5)

13.8 (10.5‑18.6)

16.0 (11.7‑22.3)
45-day 1.70
(1.51‑1.97)

2.69 (2.38‑3.10)

4.12 (3.64‑4.77)

5.41 (4.73‑6.32)

7.36 (6.24‑8.86)

9.02 (7.48‑11.1)

10.8 (8.79‑13.6)

12.9 (10.2‑16.7)

15.9 (12.1‑21.4)

18.5 (13.6‑25.8)
60-day 1.83
(1.62‑2.11)

2.91 (2.58‑3.36)

4.50 (3.97‑5.22)

5.94 (5.20‑6.93)

8.12 (6.88‑9.77)

9.98 (8.28‑12.3)

12.0 (9.76‑15.1)

14.3 (11.3‑18.5)

17.8 (13.5‑24.0)

20.8 (15.2‑28.9)
1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS).

Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates(for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upperbounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values.

Please refer to NOAA Atlas 14 document for more information.

Back to Top
PF graphical
587
------
D i I II I
C II II~
C II II~
C II II~
C II II~
C II II~
C II II~
C II II~
C II II~
C II II~
C II II~
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lat itude : 33 .7670 °, Long it u de : -116.4389"
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NOAA Atlas 14, Vol ume 6, Versio n 2 Create --ti! 4-6-Clay 12-llr 0-clay
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Large scale map
Large scale aerial
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US Department of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
National Water Center
1325 East West Highway
Silver Spring, MD 20910
Questions?: [email protected]
Disclaimer
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LABEL TOP BANK ELEV. (ALL CORNERS)
100 YR. SURFACE ELEV@
MAX. DEPTH FS=1.

DESIGN CRITERIA
MAX. PERGOLA TION RA TE = 1 "/HR.

MAX. DEPTH AT PEAK STORAGE = 5'
FACTOR OF SAFETY F.S. = 1.0 MINIMUM
~
. I
~
1' MIN. •FREEBOARD"

FROM BUILDING PAD
ONE FOOT MINIMUM 11FREEBOARD 11 BELOW LOWEST BUILDING PAD TO MAXIM/UM WATER LEVEL THE BASIN SHALL BE DESIGNED TO RETAIN THE RUNOFF FROM THE WORST CASE OF THE 1 HR., J HR. 6 HR., OR 24 HR. DURATION, 100 YEAR FREQUENCY STORM.

SEE SHT. 2 OF 2 FOR MINIMUM PLAN REQUIREMENTS
* SLOPES STEEPER THAN 5: 1 WILL REQUIRE EROSION CONTROL APPROVED BY THE CITY ENGINEER. (TYPICAL EROSION CONTROL CONSISTS OF CONTINUOUS GROUND COVER LIKE GRASS, OR WASHED ROCK WITH A DIAMETER OF 1• OR LARGER, PLACED TO A DEPTH OF J" OVER WEED BARRIER CLOTH.)

CITY OF RANCHO MIRAGE
REVISIONS RETENTION BASIN • 7/5/2012

CITY ENGINEER DA TE

STANDARD
DETAIL
310
SHT. 1 OF 2

591

CITY OF RANCHO MIRAGE
~
AT A MINIMUM. PLANS SHALL INCLUDE THE FOLLOWING INFORMATION:

1. BOUNDARY (LOT LINES) INCLUDING BEARING AND DISTANCES

2. SLOPE SYMBOLS, OR FINISH CONTOURS, WITH SLOPE RA nos OR PERCENTAGES * 3. ELEVA noN LABELS FOR: BOTTOM, WATER SURFACE AT VOL. MAX. FOR 100YR. STORM, AND TOP (HYDROLOGY CALCULA DONS SHALL BE SUBMITTED VERIFYING BASIN AREA, DEPTH, AND VOLUME.)

4. DIMENSIONS (LENGTH, WIDTH AND DEPTH) OR SCALED ORA WING.

5. FINISHED SURFACE ELEVATIONS FOR IDENTIFYING THE FLOW PATHS

6. RIP-RAP OR APPROPRIATE EROSION CONTROL IF SLOPES EXCEED 20% (5: 1)

7. ANY STRUCTURES, PIPES, HEADWALLS, RIP-RAP, DRY'NELLS, ETC. SHOWN WITH

REFERENCE TO STREET PLANS, STORM DRAIN PLANS, OR GRADING PLANS (A DRY'NELL IS RECOMMENDED FOR LARGER RETENTION BASINS AS A WAY OF INTERCEPTING nNU/SANCE WATER' THAT MIGHT CAUSE A CONSTANT SWAMPY AREA TO DEVELOP IN THE RETENTION BASIN. FLOWS TO CVWD CHANNELS OR TO LAKES TYPICALLY REQUIRE A DRY'NELL TO INTERCEPT STREET RUNOFF. MAINTENANCE IS EASIEST IF THE DRY'NELL IS NEAR THE STREET SO VACUUM TRUCKS CAN ACCESS THEM.

SEE STANDARD DRAWINGS 306 AND 311.)

CITY OF RANCHO MIRAGE
R:~5;;0~NS RETENTION BASIN NOTES
1----------1~8~ ENGINE'?~~~'}TE

STANDARD
DETAIL
310
SHT. 2 OF 2

592

ACTUAL IMPERVIOUS COVER
Land Use (1)
Natural or Agriculture
Single Family Residential: (3)
40,000 s. F. (1 Acre) Lots
20,000 s. F. (~ Acre) Lots
7,200 -10,000 s. F. Lots
Multiple Family Residential:

Condominiums
Apartments
Mobile Horne Park
Commercial, Downtown
Business or Industrial
Notes:

Range-Percent
0 -10
10 -25
30 -45
45 -55
45 -70
65 -90
60 -85
80 -100
Recommended Value
For Average
conditions-Percent(2
0 20
40 50
65 80
75 90

1. Land use should be based on ultimate development of the watershed.

Long range master plans for the County and incorporated cities should be reviewed to insure reasonable land use assumptions.

2. Recommended values are based on average conditions which may not apply to a particular study area. The percentage impervious may vary greatly even on comparable sized lots due to differences in dwelling size, improvements, etc. Landscape practices should also be considered as it is common in some areas to use ornamental grav els underlain by impervious plastic materials in place of lawns and shrubs. A field investigation of a study area should always be made, and a review of aerial photos, where available may assist in estimat ing the percentage of impervious cover in developed areas.

3. For typical horse ranch subdivisions increase impervious area 5 per cent over the values recormnended in the table above.

RCFC a WCD

HYDROLOGY NJANUAL

IMPERVIOUS COVER
FOR

DEVELOPED AREAS
PLATE 0-5.6

593

RUNOFF INDEX NUMBERS OF HYDROLOGIC SOIL-COVER COMPLEXES FOR PERVIOUS AREAS-AMC II Cover Type (3)

NATURAL COVERS -
Barren
(Rockland, eroded and graded land)
Chaparrel, Broadleaf
(Manzonita, ceanothus and scrub oak)
Chaparrel, Narrowleaf
(Chamise and redshank)
Grass, Annual or Perennial
Meadows or Cienegas
(Areas with seasonally high water table,
principal vegetation is sod forming grass)
Open Brush
(Soft wood shrubs -buckwheat, sage, etc.)
Woodland
(Coniferous or broadleaf trees predominate.

Canopy density is at least 50 percent)
Woodland, Grass
(Coniferous or broadleaf trees with canopy
density from 20 to 50 percent)

URBAN COVERS -
Residential or Commercial Landscaping
(Lawn, shrubs, etc.)
Turf
(Irrigated and mowed grass)

AGRICULTURAL COVERS -
Fallow
(Land plowed but not tilled or seeded)
Quality of Soil Group
1------..-=.--t Cover (2) A B C D
Poor
Fair
Good
Poor
Fair
Poor
Fair
Good
Poor
Fair
Good
Poor
Fair
Good
Poor
Fair
Good
Poor
Fair
Good
Good
Poor
Fair
Good
78 86 91 93
53 70
40 63
31 57
71 82
55 72
67 78
50 69
38 61
63 77
51 70
30 58
62 76
46 66
41 63
45 66
36 60
28 55
57 73
44 65
33 58
80 85
75 81
71 78
88 91
81 86
86 89
79 84
74 80
85 88
80 84
72 78
84 88
77 83
75 81
77 83
73 79
70 77
82 86
77 82
72 79
32 56 69 75
58 74 83 87
44 65 77 82
33 58 72 79
76 85 90 92
RCFC a WCD
HYDROLOGY .NJA NUAL

RUNOFF INDEX
FOR

PERVIOUS

NUMBERS
AREA
PLATE D-5.5 (I of 2)

594
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+--+--+-!--+·+-+·-+ +-+-t-+-+-1-+-t-t--. 1----t-+--t--1--+-+--if-++-+-t-++--f---f---- --+--l-+-+-.-+-+--+--+-+--+-+-1---- . ·----
40 50 60 70
RUNOFF INDEX NUMBER {RI)
...
80 90 100

1 of 6
HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2
Area=1.00ac+0.09ac typ street frontage=1.09ac
5/7/2024 LOT 1
Drainage Area (ac.)1.0900 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 AND 0.09AC TYPICAL STREET FRONTAGE Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Basin volume is calculated using the "truncated pyramid" formula, a more conservative estimate than "averaged end areas" sometimes used (Drywell can be "zeroed out" by reducing numbers to less than .001, but should not entered as zeros or program chokes.) Drywell storage includes 40% of the 1' wide rock bed surrounding the drywell: formula (upper)*PI()*(diam/2)^2+(lower)*PI()*((diam/2)^2+0.4*((diam/2+(grav+0.4166))^2-(diam/2+0.4166)^2)) The drywell wall thickness is assumed at 5" (0.4166) and the gravel bed width is variable "grav" Drywell is zeroed out by reducing to 0.001 since there is none.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =3702 s.f.Bot. =1062 s.f.Max. Depth (d)=4 Max. storage=8995.74 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.5575 167.24 0.00 0.00 0.00 0.00 0.00 167.24 1062.00 0.07 167.16 0.07 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.9071 272.13 0.00 0.00 0.00 0.00 0.00 272.13 1111.06 0.08 439.21 0.20 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 1.0024 300.73 0.00 0.00 0.00 0.00 0.00 300.73 1190.90 0.08 739.86 0.33 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 0.9389 281.66 0.00 0.00 0.00 0.00 0.00 281.66 1279.13 0.09 1021.44 0.45 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 1.4792 443.77 0.00 0.00 0.00 0.00 0.00 443.77 1361.76 0.09 1465.11 0.65 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 1.7017 510.52 0.00 0.00 0.00 0.00 0.00 510.52 1491.97 0.10 1975.53 0.88 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 2.0514 615.41 0.00 0.00 0.00 0.00 0.00 615.41 1641.76 0.11 2590.82 1.15 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 2.2421 672.62 0.00 0.00 0.00 0.00 0.00 672.62 1822.33 0.13 3263.32 1.45 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 3.2910 987.30 0.00 0.00 0.00 0.00 0.00 987.30 2019.69 0.14 4250.48 1.89 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 4.9756 1492.69 0.00 0.00 0.00 0.00 0.00 1492.69 2309.40 0.16 5743.01 2.55 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 4.4989 1349.66 0.00 0.00 0.00 0.00 0.00 1349.66 2747.41 0.19 7092.48 3.15 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.7164 214.91 0.00 0.00 0.00 0.00 0.00 214.91 3143.44 0.22 7307.17 3.25 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3206.45 0.22 7306.95 3.25 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3206.39 0.22 7306.73 3.25 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3206.32 0.22 7306.50 3.25 0.00 0.00 Total volume (cf)7308.64 Total Overflow (cf)0.00
595
-
-
---

2 of 6
3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0532 15.95 0.00 0.00 0.00 0.00 0.00 15.95 1062.00 0.07 15.87 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0532 15.95 0.00 0.00 0.00 0.00 0.00 15.95 1066.66 0.07 31.74 0.01 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0450 13.49 0.00 0.00 0.00 0.00 0.00 13.49 1071.32 0.07 45.16 0.02 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0613 18.40 0.00 0.00 0.00 0.00 0.00 18.40 1075.25 0.07 63.49 0.03 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0613 18.40 0.00 0.00 0.00 0.00 0.00 18.40 1080.63 0.08 81.81 0.04 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.1173 35.20 0.00 0.00 0.00 0.00 0.00 35.20 1086.01 0.08 116.93 0.05 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0613 18.40 0.00 0.00 0.00 0.00 0.00 18.40 1096.32 0.08 135.26 0.06 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.1173 35.20 0.00 0.00 0.00 0.00 0.00 35.20 1101.69 0.08 170.38 0.08 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.1173 35.20 0.00 0.00 0.00 0.00 0.00 35.20 1112.00 0.08 205.50 0.09 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0613 18.40 0.00 0.00 0.00 0.00 0.00 18.40 1122.31 0.08 223.82 0.10 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0654 19.63 0.00 0.00 0.00 0.00 0.00 19.63 1127.69 0.08 243.37 0.11 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.1173 35.20 0.00 0.00 0.00 0.00 0.00 35.20 1133.42 0.08 278.49 0.12 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.2809 84.26 0.00 0.00 0.00 0.00 0.00 84.26 1143.73 0.08 362.68 0.16 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.2809 84.26 0.00 0.00 0.00 0.00 0.00 84.26 1168.44 0.08 446.86 0.20 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.2809 84.26 0.00 0.00 0.00 0.00 0.00 84.26 1193.14 0.08 531.04 0.24 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.1991 59.73 0.00 0.00 0.00 0.00 0.00 59.73 1217.84 0.08 590.68 0.26 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.4444 133.33 0.00 0.00 0.00 0.00 0.00 133.33 1235.35 0.09 723.93 0.32 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.4853 145.59 0.00 0.00 0.00 0.00 0.00 145.59 1274.45 0.09 869.43 0.39 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.3626 108.79 0.00 0.00 0.00 0.00 0.00 108.79 1317.15 0.09 978.13 0.43 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.4853 145.59 0.00 0.00 0.00 0.00 0.00 145.59 1349.05 0.09 1123.63 0.50 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.7306 219.19 0.00 0.00 0.00 0.00 0.00 219.19 1391.75 0.10 1342.72 0.60 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.6489 194.66 0.00 0.00 0.00 0.00 0.00 194.66 1456.05 0.10 1537.27 0.68 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.5671 170.12 0.00 0.00 0.00 0.00 0.00 170.12 1513.15 0.11 1707.29 0.76 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.6080 182.39 0.00 0.00 0.00 0.00 0.00 182.39 1563.04 0.11 1889.57 0.84 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.6489 194.66 0.00 0.00 0.00 0.00 0.00 194.66 1616.54 0.11 2084.12 0.93 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 1.0986 329.58 0.00 0.00 0.00 0.00 0.00 329.58 1673.63 0.12 2413.58 1.07 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 1.4257 427.70 0.00 0.00 0.00 0.00 0.00 427.70 1770.32 0.12 2841.16 1.26 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.8124 243.72 0.00 0.00 0.00 0.00 0.00 243.72 1895.80 0.13 3084.75 1.37 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 2.1616 648.49 0.00 0.00 0.00 0.00 0.00 648.49 1967.29 0.14 3733.10 1.66 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 2.3661 709.82 0.00 0.00 0.00 0.00 0.00 709.82 2157.56 0.15 4442.77 1.98 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 2.7340 820.21 0.00 0.00 0.00 0.00 0.00 820.21 2365.83 0.16 5262.81 2.34 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 1.7937 538.10 0.00 0.00 0.00 0.00 0.00 538.10 2606.49 0.18 5800.73 2.58 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.1991 59.73 0.00 0.00 0.00 0.00 0.00 59.73 2764.35 0.19 5860.27 2.61 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.1173 35.20 0.00 0.00 0.00 0.00 0.00 35.20 2781.83 0.19 5895.27 2.62 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.1173 35.20 0.00 0.00 0.00 0.00 0.00 35.20 2792.10 0.19 5930.28 2.64 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0245 7.36 0.00 0.00 0.00 0.00 0.00 7.36 2802.37 0.19 5937.45 2.64 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2804.47 0.19 5937.25 2.64 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2804.42 0.19 5937.06 2.64 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2804.36 0.19 5936.86 2.64 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2804.30 0.19 5936.67 2.64 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2804.25 0.19 5936.47 2.64 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2804.19 0.19 5936.28 2.64 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2804.13 0.19 5936.08 2.64 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2804.07 0.19 5935.89 2.64 0.00 0.00 Total volume (cf)5941.35 Total Overflow (cf)0.00
596

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6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0250 7.50 0.00 0.00 0.00 0.00 0.00 7.50 1062.00 0.07 7.42 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0300 9.00 0.00 0.00 0.00 0.00 0.00 9.00 1064.18 0.07 16.35 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0300 9.00 0.00 0.00 0.00 0.00 0.00 9.00 1066.80 0.07 25.27 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0300 9.00 0.00 0.00 0.00 0.00 0.00 9.00 1069.42 0.07 34.19 0.02 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0300 9.00 0.00 0.00 0.00 0.00 0.00 9.00 1072.04 0.07 43.12 0.02 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0350 10.50 0.00 0.00 0.00 0.00 0.00 10.50 1074.65 0.07 53.54 0.02 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0350 10.50 0.00 0.00 0.00 0.00 0.00 10.50 1077.71 0.07 63.96 0.03 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0350 10.50 0.00 0.00 0.00 0.00 0.00 10.50 1080.77 0.08 74.38 0.03 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0350 10.50 0.00 0.00 0.00 0.00 0.00 10.50 1083.83 0.08 84.81 0.04 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0350 10.50 0.00 0.00 0.00 0.00 0.00 10.50 1086.89 0.08 95.23 0.04 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0350 10.50 0.00 0.00 0.00 0.00 0.00 10.50 1089.95 0.08 105.65 0.05 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0400 12.00 0.00 0.00 0.00 0.00 0.00 12.00 1093.01 0.08 117.57 0.05 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0400 12.00 0.00 0.00 0.00 0.00 0.00 12.00 1096.50 0.08 129.49 0.06 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0400 12.00 0.00 0.00 0.00 0.00 0.00 12.00 1100.00 0.08 141.41 0.06 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0400 12.00 0.00 0.00 0.00 0.00 0.00 12.00 1103.50 0.08 153.33 0.07 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0400 12.00 0.00 0.00 0.00 0.00 0.00 12.00 1107.00 0.08 165.25 0.07 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0400 12.00 0.00 0.00 0.00 0.00 0.00 12.00 1110.50 0.08 177.17 0.08 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0400 12.00 0.00 0.00 0.00 0.00 0.00 12.00 1113.99 0.08 189.09 0.08 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0400 12.00 0.00 0.00 0.00 0.00 0.00 12.00 1117.49 0.08 201.01 0.09 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0400 12.00 0.00 0.00 0.00 0.00 0.00 12.00 1120.99 0.08 212.93 0.09 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0400 12.00 0.00 0.00 0.00 0.00 0.00 12.00 1124.49 0.08 224.85 0.10 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0400 12.00 0.00 0.00 0.00 0.00 0.00 12.00 1127.99 0.08 236.76 0.11 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0400 12.00 0.00 0.00 0.00 0.00 0.00 12.00 1131.48 0.08 248.68 0.11 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0450 13.50 0.00 0.00 0.00 0.00 0.00 13.50 1134.98 0.08 262.10 0.12 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0400 12.00 0.00 0.00 0.00 0.00 0.00 12.00 1138.92 0.08 274.02 0.12 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0450 13.50 0.00 0.00 0.00 0.00 0.00 13.50 1142.42 0.08 287.44 0.13 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0450 13.50 0.00 0.00 0.00 0.00 0.00 13.50 1146.35 0.08 300.85 0.13 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0450 13.50 0.00 0.00 0.00 0.00 0.00 13.50 1150.29 0.08 314.27 0.14 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0450 13.50 0.00 0.00 0.00 0.00 0.00 13.50 1154.23 0.08 327.68 0.15 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0450 13.50 0.00 0.00 0.00 0.00 0.00 13.50 1158.17 0.08 341.10 0.15 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0450 13.50 0.00 0.00 0.00 0.00 0.00 13.50 1162.10 0.08 354.52 0.16 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0450 13.50 0.00 0.00 0.00 0.00 0.00 13.50 1166.04 0.08 367.93 0.16 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0500 15.00 0.00 0.00 0.00 0.00 0.00 15.00 1169.98 0.08 382.85 0.17 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0500 15.00 0.00 0.00 0.00 0.00 0.00 15.00 1174.35 0.08 397.76 0.18 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0500 15.00 0.00 0.00 0.00 0.00 0.00 15.00 1178.73 0.08 412.67 0.18 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0500 15.00 0.00 0.00 0.00 0.00 0.00 15.00 1183.11 0.08 427.59 0.19 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0500 15.00 0.00 0.00 0.00 0.00 0.00 15.00 1187.49 0.08 442.50 0.20 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0550 16.50 0.00 0.00 0.00 0.00 0.00 16.50 1191.86 0.08 458.91 0.20 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0550 16.50 0.00 0.00 0.00 0.00 0.00 16.50 1196.68 0.08 475.33 0.21 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0550 16.50 0.00 0.00 0.00 0.00 0.00 16.50 1201.50 0.08 491.74 0.22 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0600 18.00 0.00 0.00 0.00 0.00 0.00 18.00 1206.31 0.08 509.65 0.23 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0650 19.49 0.00 0.00 0.00 0.00 0.00 19.49 1211.57 0.08 529.06 0.24 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0812 24.36 0.00 0.00 0.00 0.00 0.00 24.36 1217.26 0.08 553.33 0.25 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0812 24.36 0.00 0.00 0.00 0.00 0.00 24.36 1224.39 0.09 577.61 0.26 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.1312 39.35 0.00 0.00 0.00 0.00 0.00 39.35 1231.51 0.09 616.88 0.27 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.1312 39.35 0.00 0.00 0.00 0.00 0.00 39.35 1243.04 0.09 656.15 0.29 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.1812 54.35 0.00 0.00 0.00 0.00 0.00 54.35 1254.56 0.09 710.41 0.32 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.1812 54.35 0.00 0.00 0.00 0.00 0.00 54.35 1270.49 0.09 764.67 0.34 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.2312 69.35 0.00 0.00 0.00 0.00 0.00 69.35 1286.41 0.09 833.93 0.37 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.2811 84.34 0.00 0.00 0.00 0.00 0.00 84.34 1306.73 0.09 918.18 0.41 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.3311 99.34 0.00 0.00 0.00 0.00 0.00 99.34 1331.46 0.09 1017.43 0.45 0.00 0.00 597

4 of 6
4:20 2 0.91 0.56 N/A 0.3468 0.3811 114.33 0.00 0.00 0.00 0.00 0.00 114.33 1360.59 0.09 1131.67 0.50 0.00 0.00 4:25 2.1 0.96 0.56 N/A 0.3922 0.4311 129.33 0.00 0.00 0.00 0.00 0.00 129.33 1394.11 0.10 1260.90 0.56 0.00 0.00 4:30 2.1 0.96 0.56 N/A 0.3922 0.4311 129.33 0.00 0.00 0.00 0.00 0.00 129.33 1432.04 0.10 1390.13 0.62 0.00 0.00 4:35 2.2 1.00 0.56 N/A 0.4377 0.4811 144.33 0.00 0.00 0.00 0.00 0.00 144.33 1469.96 0.10 1534.35 0.68 0.00 0.00 4:40 2.3 1.05 0.56 N/A 0.4832 0.5311 159.32 0.00 0.00 0.00 0.00 0.00 159.32 1512.29 0.11 1693.57 0.75 0.00 0.00 4:45 2.4 1.09 0.56 N/A 0.5287 0.5811 174.32 0.00 0.00 0.00 0.00 0.00 174.32 1559.02 0.11 1867.78 0.83 0.00 0.00 4:50 2.4 1.09 0.56 N/A 0.5287 0.5811 174.32 0.00 0.00 0.00 0.00 0.00 174.32 1610.14 0.11 2041.99 0.91 0.00 0.00 4:55 2.5 1.14 0.56 N/A 0.5742 0.6310 189.31 0.00 0.00 0.00 0.00 0.00 189.31 1661.27 0.12 2231.18 0.99 0.00 0.00 5:00 2.6 1.18 0.56 N/A 0.6196 0.6810 204.31 0.00 0.00 0.00 0.00 0.00 204.31 1716.79 0.12 2435.37 1.08 0.00 0.00 5:05 3.1 1.41 0.56 N/A 0.8470 0.9310 279.29 0.00 0.00 0.00 0.00 0.00 279.29 1776.71 0.12 2714.54 1.21 0.00 0.00 5:10 3.6 1.64 0.56 N/A 1.0744 1.1809 354.27 0.00 0.00 0.00 0.00 0.00 354.27 1858.64 0.13 3068.68 1.36 0.00 0.00 5:15 3.9 1.77 0.56 N/A 1.2109 1.3309 399.26 0.00 0.00 0.00 0.00 0.00 399.26 1962.57 0.14 3467.80 1.54 0.00 0.00 5:20 4.2 1.91 0.56 N/A 1.3473 1.4808 444.24 0.00 0.00 0.00 0.00 0.00 444.24 2079.70 0.14 3911.90 1.74 0.00 0.00 5:25 4.7 2.14 0.56 N/A 1.5747 1.7307 519.22 0.00 0.00 0.00 0.00 0.00 519.22 2210.03 0.15 4430.97 1.97 0.00 0.00 5:30 5.6 2.55 0.56 N/A 1.9840 2.1806 654.19 0.00 0.00 0.00 0.00 0.00 654.19 2362.37 0.16 5084.99 2.26 0.00 0.00 5:35 1.9 0.86 0.56 N/A 0.3013 0.3311 99.34 0.00 0.00 0.00 0.00 0.00 99.34 2554.30 0.18 5184.15 2.31 0.00 0.00 5:40 0.9 0.41 0.56 0.37 0.0409 0.0450 13.50 0.00 0.00 0.00 0.00 0.00 13.50 2583.40 0.18 5197.47 2.31 0.00 0.00 5:45 0.6 0.27 0.56 0.25 0.0273 0.0300 9.00 0.00 0.00 0.00 0.00 0.00 9.00 2587.31 0.18 5206.29 2.31 0.00 0.00 5:50 0.5 0.23 0.56 0.20 0.0227 0.0250 7.50 0.00 0.00 0.00 0.00 0.00 7.50 2589.90 0.18 5213.60 2.32 0.00 0.00 5:55 0.3 0.14 0.56 0.12 0.0136 0.0150 4.50 0.00 0.00 0.00 0.00 0.00 4.50 2592.05 0.18 5217.92 2.32 0.00 0.00 6:00 0.2 0.09 0.56 0.08 0.0091 0.0100 3.00 0.00 0.00 0.00 0.00 0.00 3.00 2593.31 0.18 5220.74 2.32 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2594.14 0.18 5220.56 2.32 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2594.09 0.18 5220.38 2.32 0.00 0.00 6:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2594.04 0.18 5220.20 2.32 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2593.98 0.18 5220.02 2.32 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2593.93 0.18 5219.84 2.32 0.00 0.00 6:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2593.88 0.18 5219.66 2.32 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2593.83 0.18 5219.48 2.32 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2593.77 0.18 5219.30 2.32 0.00 0.00 6:45 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2593.72 0.18 5219.12 2.32 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2593.67 0.18 5218.94 2.32 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2593.61 0.18 5218.76 2.32 0.00 0.00 7:00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2593.56 0.18 5218.58 2.32 0.00 0.00 Total volume (cf)5227.70 Total Overflow (cf)0.00
598

5 of 6
24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0044 4.00 0.00 0.00 0.00 0.00 0.00 4.00 1062.00 0.22 3.78 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1063.11 0.22 9.55 0.00 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1064.80 0.22 15.32 0.01 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0089 7.99 0.00 0.00 0.00 0.00 0.00 7.99 1066.50 0.22 23.09 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1068.78 0.22 28.86 0.01 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1070.47 0.22 34.63 0.02 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1072.16 0.22 40.41 0.02 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0089 7.99 0.00 0.00 0.00 0.00 0.00 7.99 1073.86 0.22 48.17 0.02 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0089 7.99 0.00 0.00 0.00 0.00 0.00 7.99 1076.14 0.22 55.94 0.02 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0089 7.99 0.00 0.00 0.00 0.00 0.00 7.99 1078.42 0.22 63.71 0.03 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0111 9.99 0.00 0.00 0.00 0.00 0.00 9.99 1080.70 0.23 73.48 0.03 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0111 9.99 0.00 0.00 0.00 0.00 0.00 9.99 1083.56 0.23 83.24 0.04 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0111 9.99 0.00 0.00 0.00 0.00 0.00 9.99 1086.43 0.23 93.00 0.04 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0111 9.99 0.00 0.00 0.00 0.00 0.00 9.99 1089.29 0.23 102.77 0.05 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0111 9.99 0.00 0.00 0.00 0.00 0.00 9.99 1092.16 0.23 112.53 0.05 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0133 11.99 0.00 0.00 0.00 0.00 0.00 11.99 1095.02 0.23 124.29 0.06 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0133 11.99 0.00 0.00 0.00 0.00 0.00 11.99 1098.48 0.23 136.05 0.06 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0155 13.99 0.00 0.00 0.00 0.00 0.00 13.99 1101.93 0.23 149.81 0.07 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0155 13.99 0.00 0.00 0.00 0.00 0.00 13.99 1105.96 0.23 163.57 0.07 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0178 15.99 0.00 0.00 0.00 0.00 0.00 15.99 1110.00 0.23 179.32 0.08 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0133 11.99 0.00 0.00 0.00 0.00 0.00 11.99 1114.63 0.23 191.08 0.08 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0155 13.99 0.00 0.00 0.00 0.00 0.00 13.99 1118.08 0.23 204.83 0.09 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0178 15.99 0.00 0.00 0.00 0.00 0.00 15.99 1122.11 0.23 220.58 0.10 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0178 15.99 0.00 0.00 0.00 0.00 0.00 15.99 1126.73 0.23 236.33 0.11 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0200 17.98 0.00 0.00 0.00 0.00 0.00 17.98 1131.36 0.24 254.08 0.11 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0200 17.98 0.00 0.00 0.00 0.00 0.00 17.98 1136.57 0.24 271.83 0.12 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0222 19.98 0.00 0.00 0.00 0.00 0.00 19.98 1141.77 0.24 291.57 0.13 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0222 19.98 0.00 0.00 0.00 0.00 0.00 19.98 1147.57 0.24 311.31 0.14 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0222 19.98 0.00 0.00 0.00 0.00 0.00 19.98 1153.36 0.24 331.05 0.15 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0244 21.98 0.00 0.00 0.00 0.00 0.00 21.98 1159.15 0.24 352.79 0.16 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0266 23.98 0.00 0.00 0.00 0.00 0.00 23.98 1165.53 0.24 376.53 0.17 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0289 25.98 0.00 0.00 0.00 0.00 0.00 25.98 1172.50 0.24 402.26 0.18 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0333 29.97 0.00 0.00 0.00 0.00 0.00 29.97 1180.05 0.25 431.98 0.19 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0333 29.97 0.00 0.00 0.00 0.00 0.00 29.97 1188.78 0.25 461.71 0.21 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0355 31.97 0.00 0.00 0.00 0.00 0.00 31.97 1197.50 0.25 493.43 0.22 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0377 33.97 0.00 0.00 0.00 0.00 0.00 33.97 1206.81 0.25 527.15 0.23 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0422 37.96 0.00 0.00 0.00 0.00 0.00 37.96 1216.70 0.25 564.86 0.25 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0444 39.96 0.00 0.00 0.00 0.00 0.00 39.96 1227.77 0.26 604.56 0.27 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0466 41.96 0.00 0.00 0.00 0.00 0.00 41.96 1239.42 0.26 646.27 0.29 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0488 43.96 0.00 0.00 0.00 0.00 0.00 43.96 1251.66 0.26 689.96 0.31 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0333 29.97 0.00 0.00 0.00 0.00 0.00 29.97 1264.49 0.26 719.67 0.32 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0333 29.97 0.00 0.00 0.00 0.00 0.00 29.97 1273.20 0.27 749.38 0.33 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0444 39.96 0.00 0.00 0.00 0.00 0.00 39.96 1281.92 0.27 789.07 0.35 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0444 39.96 0.00 0.00 0.00 0.00 0.00 39.96 1293.57 0.27 828.77 0.37 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0422 37.96 0.00 0.00 0.00 0.00 0.00 37.96 1305.22 0.27 866.46 0.39 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0422 37.96 0.00 0.00 0.00 0.00 0.00 37.96 1316.28 0.27 904.15 0.40 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0377 33.97 0.00 0.00 0.00 0.00 0.00 33.97 1327.34 0.28 937.84 0.42 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0400 35.97 0.00 0.00 0.00 0.00 0.00 35.97 1337.23 0.28 973.53 0.43 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0555 49.95 0.00 0.00 0.00 0.00 0.00 49.95 1347.70 0.28 1023.20 0.45 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0577 51.95 0.00 0.00 0.00 0.00 0.00 51.95 1362.28 0.28 1074.87 0.48 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0684 61.56 0.00 0.00 0.00 0.00 0.00 61.56 1377.44 0.29 1136.14 0.51 0.00 0.00 599

6 of 6
13:00 2.9 0.59 0.50 N/A 0.0900 0.0989 89.05 0.00 0.00 0.00 0.00 0.00 89.05 1395.43 0.29 1224.90 0.54 0.00 0.00 13:15 3.4 0.69 0.49 N/A 0.1985 0.2182 196.38 0.00 0.00 0.00 0.00 0.00 196.38 1421.48 0.30 1420.99 0.63 0.00 0.00 13:30 3.4 0.69 0.48 N/A 0.2059 0.2263 203.71 0.00 0.00 0.00 0.00 0.00 203.71 1479.02 0.31 1624.39 0.72 0.00 0.00 13:45 2.3 0.46 0.47 0.42 0.0465 0.0511 45.96 0.00 0.00 0.00 0.00 0.00 45.96 1538.71 0.32 1670.03 0.74 0.00 0.00 14:00 2.3 0.46 0.47 0.42 0.0465 0.0511 45.96 0.00 0.00 0.00 0.00 0.00 45.96 1552.11 0.32 1715.66 0.76 0.00 0.00 14:15 2.7 0.55 0.46 N/A 0.0862 0.0947 85.25 0.00 0.00 0.00 0.00 0.00 85.25 1565.50 0.33 1800.59 0.80 0.00 0.00 14:30 2.6 0.53 0.45 N/A 0.0730 0.0802 72.21 0.00 0.00 0.00 0.00 0.00 72.21 1590.42 0.33 1872.46 0.83 0.00 0.00 14:45 2.6 0.53 0.45 N/A 0.0799 0.0878 79.05 0.00 0.00 0.00 0.00 0.00 79.05 1611.52 0.34 1951.18 0.87 0.00 0.00 15:00 2.5 0.51 0.44 N/A 0.0665 0.0731 65.81 0.00 0.00 0.00 0.00 0.00 65.81 1634.62 0.34 2016.64 0.90 0.00 0.00 15:15 2.4 0.48 0.43 N/A 0.0530 0.0583 52.46 0.00 0.00 0.00 0.00 0.00 52.46 1653.83 0.34 2068.76 0.92 0.00 0.00 15:30 2.3 0.46 0.43 0.42 0.0465 0.0511 45.96 0.00 0.00 0.00 0.00 0.00 45.96 1669.12 0.35 2114.37 0.94 0.00 0.00 15:45 1.9 0.38 0.42 0.35 0.0384 0.0422 37.96 0.00 0.00 0.00 0.00 0.00 37.96 1682.51 0.35 2151.98 0.96 0.00 0.00 16:00 1.9 0.38 0.41 0.35 0.0384 0.0422 37.96 0.00 0.00 0.00 0.00 0.00 37.96 1693.55 0.35 2189.60 0.97 0.00 0.00 16:15 0.4 0.08 0.41 0.07 0.0081 0.0089 7.99 0.00 0.00 0.00 0.00 0.00 7.99 1704.59 0.36 2197.23 0.98 0.00 0.00 16:30 0.4 0.08 0.40 0.07 0.0081 0.0089 7.99 0.00 0.00 0.00 0.00 0.00 7.99 1706.83 0.36 2204.87 0.98 0.00 0.00 16:45 0.3 0.06 0.39 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1709.07 0.36 2210.51 0.98 0.00 0.00 17:00 0.3 0.06 0.39 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1710.72 0.36 2216.15 0.99 0.00 0.00 17:15 0.5 0.10 0.38 0.09 0.0101 0.0111 9.99 0.00 0.00 0.00 0.00 0.00 9.99 1712.38 0.36 2225.78 0.99 0.00 0.00 17:30 0.5 0.10 0.38 0.09 0.0101 0.0111 9.99 0.00 0.00 0.00 0.00 0.00 9.99 1715.20 0.36 2235.41 0.99 0.00 0.00 17:45 0.5 0.10 0.37 0.09 0.0101 0.0111 9.99 0.00 0.00 0.00 0.00 0.00 9.99 1718.03 0.36 2245.05 1.00 0.00 0.00 18:00 0.4 0.08 0.37 0.07 0.0081 0.0089 7.99 0.00 0.00 0.00 0.00 0.00 7.99 1720.86 0.36 2252.68 1.00 0.00 0.00 18:15 0.4 0.08 0.36 0.07 0.0081 0.0089 7.99 0.00 0.00 0.00 0.00 0.00 7.99 1723.10 0.36 2260.31 1.01 0.00 0.00 18:30 0.4 0.08 0.35 0.07 0.0081 0.0089 7.99 0.00 0.00 0.00 0.00 0.00 7.99 1725.34 0.36 2267.95 1.01 0.00 0.00 18:45 0.3 0.06 0.35 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1727.58 0.36 2273.58 1.01 0.00 0.00 19:00 0.2 0.04 0.34 0.04 0.0040 0.0044 4.00 0.00 0.00 0.00 0.00 0.00 4.00 1729.23 0.36 2277.22 1.01 0.00 0.00 19:15 0.3 0.06 0.34 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1730.30 0.36 2282.85 1.02 0.00 0.00 19:30 0.4 0.08 0.34 0.07 0.0081 0.0089 7.99 0.00 0.00 0.00 0.00 0.00 7.99 1731.95 0.36 2290.48 1.02 0.00 0.00 19:45 0.3 0.06 0.33 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1734.19 0.36 2296.12 1.02 0.00 0.00 20:00 0.2 0.04 0.33 0.04 0.0040 0.0044 4.00 0.00 0.00 0.00 0.00 0.00 4.00 1735.85 0.36 2299.75 1.02 0.00 0.00 20:15 0.3 0.06 0.32 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1736.91 0.36 2305.38 1.03 0.00 0.00 20:30 0.3 0.06 0.32 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1738.57 0.36 2311.02 1.03 0.00 0.00 20:45 0.3 0.06 0.31 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1740.22 0.36 2316.65 1.03 0.00 0.00 21:00 0.2 0.04 0.31 0.04 0.0040 0.0044 4.00 0.00 0.00 0.00 0.00 0.00 4.00 1741.87 0.36 2320.28 1.03 0.00 0.00 21:15 0.3 0.06 0.31 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1742.94 0.36 2325.91 1.03 0.00 0.00 21:30 0.2 0.04 0.30 0.04 0.0040 0.0044 4.00 0.00 0.00 0.00 0.00 0.00 4.00 1744.59 0.36 2329.55 1.04 0.00 0.00 21:45 0.3 0.06 0.30 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1745.66 0.36 2335.18 1.04 0.00 0.00 22:00 0.2 0.04 0.30 0.04 0.0040 0.0044 4.00 0.00 0.00 0.00 0.00 0.00 4.00 1747.31 0.36 2338.81 1.04 0.00 0.00 22:15 0.3 0.06 0.29 0.05 0.0061 0.0067 5.99 0.00 0.00 0.00 0.00 0.00 5.99 1748.38 0.36 2344.44 1.04 0.00 0.00 22:30 0.2 0.04 0.29 0.04 0.0040 0.0044 4.00 0.00 0.00 0.00 0.00 0.00 4.00 1750.03 0.36 2348.07 1.04 0.00 0.00 22:45 0.2 0.04 0.29 0.04 0.0040 0.0044 4.00 0.00 0.00 0.00 0.00 0.00 4.00 1751.09 0.36 2351.70 1.05 0.00 0.00 23:00 0.2 0.04 0.29 0.04 0.0040 0.0044 4.00 0.00 0.00 0.00 0.00 0.00 4.00 1752.16 0.37 2355.33 1.05 0.00 0.00 23:15 0.2 0.04 0.28 0.04 0.0040 0.0044 4.00 0.00 0.00 0.00 0.00 0.00 4.00 1753.22 0.37 2358.96 1.05 0.00 0.00 23:30 0.2 0.04 0.28 0.04 0.0040 0.0044 4.00 0.00 0.00 0.00 0.00 0.00 4.00 1754.29 0.37 2362.59 1.05 0.00 0.00 23:45 0.2 0.04 0.28 0.04 0.0040 0.0044 4.00 0.00 0.00 0.00 0.00 0.00 4.00 1755.36 0.37 2366.23 1.05 0.00 0.00 24:00 0.2 0.04 0.28 0.04 0.0040 0.0044 4.00 0.00 0.00 0.00 0.00 0.00 4.00 1756.42 0.37 2369.86 1.05 0.00 0.00 0 0.00 0.28 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1757.49 0.37 2369.49 1.05 0.00 0.00 Total volume (cf)2398.09 Total Overflow (cf)0.00
600

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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=1.07ac+0.09ac typ street frontage=1.16ac 5/7/2024 LOT 2
Drainage Area (ac.)1.1600 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 AND 0.09AC TYPICAL STREET FRONTAGE Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =3234 s.f.Bot. =1078 s.f.Max. Depth (d)=4 Max. storage=8238.87 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.5933 177.98 0.00 0.00 0.00 0.00 0.00 177.98 1078.00 0.07 177.90 0.09 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.9653 289.60 0.00 0.00 0.00 0.00 0.00 289.60 1124.55 0.08 467.43 0.23 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 1.0668 320.05 0.00 0.00 0.00 0.00 0.00 320.05 1200.32 0.08 787.39 0.38 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 0.9992 299.75 0.00 0.00 0.00 0.00 0.00 299.75 1284.05 0.09 1087.05 0.53 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 1.5742 472.27 0.00 0.00 0.00 0.00 0.00 472.27 1362.47 0.09 1559.23 0.76 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 1.8110 543.30 0.00 0.00 0.00 0.00 0.00 543.30 1486.03 0.10 2102.43 1.02 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 2.1831 654.93 0.00 0.00 0.00 0.00 0.00 654.93 1628.18 0.11 2757.25 1.34 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 2.3861 715.82 0.00 0.00 0.00 0.00 0.00 715.82 1799.53 0.12 3472.94 1.69 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 3.5024 1050.71 0.00 0.00 0.00 0.00 0.00 1050.71 1986.82 0.14 4523.51 2.20 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 5.2952 1588.55 0.00 0.00 0.00 0.00 0.00 1588.55 2261.74 0.16 6111.90 2.97 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 4.7878 1436.33 0.00 0.00 0.00 0.00 0.00 1436.33 2677.40 0.19 7548.05 3.66 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.7624 228.72 0.00 0.00 0.00 0.00 0.00 228.72 3053.22 0.21 7776.55 3.78 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3113.02 0.22 7776.33 3.78 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3112.96 0.22 7776.12 3.78 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3112.90 0.22 7775.90 3.78 0.00 0.00 Total volume (cf)7778.00 Total Overflow (cf)0.00
601
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0566 16.97 0.00 0.00 0.00 0.00 0.00 16.97 1078.00 0.07 16.89 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0566 16.97 0.00 0.00 0.00 0.00 0.00 16.97 1082.42 0.08 33.79 0.02 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0479 14.36 0.00 0.00 0.00 0.00 0.00 14.36 1086.84 0.08 48.07 0.02 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0653 19.58 0.00 0.00 0.00 0.00 0.00 19.58 1090.58 0.08 67.58 0.03 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0653 19.58 0.00 0.00 0.00 0.00 0.00 19.58 1095.68 0.08 87.08 0.04 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.1249 37.46 0.00 0.00 0.00 0.00 0.00 37.46 1100.79 0.08 124.47 0.06 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0653 19.58 0.00 0.00 0.00 0.00 0.00 19.58 1110.57 0.08 143.97 0.07 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.1249 37.46 0.00 0.00 0.00 0.00 0.00 37.46 1115.67 0.08 181.35 0.09 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.1249 37.46 0.00 0.00 0.00 0.00 0.00 37.46 1125.46 0.08 218.73 0.11 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0653 19.58 0.00 0.00 0.00 0.00 0.00 19.58 1135.24 0.08 238.24 0.12 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0696 20.89 0.00 0.00 0.00 0.00 0.00 20.89 1140.34 0.08 259.04 0.13 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.1249 37.46 0.00 0.00 0.00 0.00 0.00 37.46 1145.79 0.08 296.42 0.14 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.2989 89.67 0.00 0.00 0.00 0.00 0.00 89.67 1155.57 0.08 386.02 0.19 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.2989 89.67 0.00 0.00 0.00 0.00 0.00 89.67 1179.02 0.08 475.61 0.23 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.2989 89.67 0.00 0.00 0.00 0.00 0.00 89.67 1202.46 0.08 565.20 0.27 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.2119 63.57 0.00 0.00 0.00 0.00 0.00 63.57 1225.91 0.09 628.68 0.31 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.4730 141.89 0.00 0.00 0.00 0.00 0.00 141.89 1242.52 0.09 770.49 0.37 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.5165 154.94 0.00 0.00 0.00 0.00 0.00 154.94 1279.63 0.09 925.34 0.45 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.3859 115.78 0.00 0.00 0.00 0.00 0.00 115.78 1320.15 0.09 1041.03 0.51 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.5165 154.94 0.00 0.00 0.00 0.00 0.00 154.94 1350.42 0.09 1195.88 0.58 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.7775 233.26 0.00 0.00 0.00 0.00 0.00 233.26 1390.94 0.10 1429.04 0.69 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.6905 207.16 0.00 0.00 0.00 0.00 0.00 207.16 1451.96 0.10 1636.10 0.79 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.6035 181.05 0.00 0.00 0.00 0.00 0.00 181.05 1506.14 0.10 1817.04 0.88 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.6470 194.10 0.00 0.00 0.00 0.00 0.00 194.10 1553.50 0.11 2011.04 0.98 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.6905 207.16 0.00 0.00 0.00 0.00 0.00 207.16 1604.26 0.11 2218.08 1.08 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 1.1691 350.74 0.00 0.00 0.00 0.00 0.00 350.74 1658.44 0.12 2568.71 1.25 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 1.5172 455.17 0.00 0.00 0.00 0.00 0.00 455.17 1750.20 0.12 3023.76 1.47 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.8646 259.37 0.00 0.00 0.00 0.00 0.00 259.37 1869.28 0.13 3283.00 1.59 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 2.3004 690.13 0.00 0.00 0.00 0.00 0.00 690.13 1937.12 0.13 3973.00 1.93 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 2.5180 755.40 0.00 0.00 0.00 0.00 0.00 755.40 2117.68 0.15 4728.26 2.30 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 2.9096 872.88 0.00 0.00 0.00 0.00 0.00 872.88 2315.32 0.16 5600.98 2.72 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 1.9088 572.65 0.00 0.00 0.00 0.00 0.00 572.65 2543.70 0.18 6173.46 3.00 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.2119 63.57 0.00 0.00 0.00 0.00 0.00 63.57 2693.51 0.19 6236.84 3.03 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.1249 37.46 0.00 0.00 0.00 0.00 0.00 37.46 2710.10 0.19 6274.11 3.05 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.1249 37.46 0.00 0.00 0.00 0.00 0.00 37.46 2719.85 0.19 6311.38 3.06 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0261 7.83 0.00 0.00 0.00 0.00 0.00 7.83 2729.60 0.19 6319.02 3.07 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2731.60 0.19 6318.83 3.07 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2731.55 0.19 6318.64 3.07 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2731.50 0.19 6318.45 3.07 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2731.45 0.19 6318.26 3.07 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2731.40 0.19 6318.07 3.07 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2731.35 0.19 6317.89 3.07 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2731.30 0.19 6317.70 3.07 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2731.26 0.19 6317.51 3.07 0.00 0.00 Total volume (cf)6322.90 Total Overflow (cf)0.00
602

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6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0266 7.98 0.00 0.00 0.00 0.00 0.00 7.98 1078.00 0.07 7.90 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0319 9.58 0.00 0.00 0.00 0.00 0.00 9.58 1080.07 0.08 17.40 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0319 9.58 0.00 0.00 0.00 0.00 0.00 9.58 1082.55 0.08 26.91 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0319 9.58 0.00 0.00 0.00 0.00 0.00 9.58 1085.04 0.08 36.41 0.02 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0319 9.58 0.00 0.00 0.00 0.00 0.00 9.58 1087.53 0.08 45.90 0.02 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0372 11.17 0.00 0.00 0.00 0.00 0.00 11.17 1090.01 0.08 57.00 0.03 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0372 11.17 0.00 0.00 0.00 0.00 0.00 11.17 1092.92 0.08 68.10 0.03 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0372 11.17 0.00 0.00 0.00 0.00 0.00 11.17 1095.82 0.08 79.19 0.04 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0372 11.17 0.00 0.00 0.00 0.00 0.00 11.17 1098.72 0.08 90.29 0.04 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0372 11.17 0.00 0.00 0.00 0.00 0.00 11.17 1101.63 0.08 101.38 0.05 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0372 11.17 0.00 0.00 0.00 0.00 0.00 11.17 1104.53 0.08 112.48 0.05 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0426 12.77 0.00 0.00 0.00 0.00 0.00 12.77 1107.43 0.08 125.17 0.06 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0426 12.77 0.00 0.00 0.00 0.00 0.00 12.77 1110.75 0.08 137.86 0.07 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0426 12.77 0.00 0.00 0.00 0.00 0.00 12.77 1114.07 0.08 150.55 0.07 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0426 12.77 0.00 0.00 0.00 0.00 0.00 12.77 1117.40 0.08 163.23 0.08 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0426 12.77 0.00 0.00 0.00 0.00 0.00 12.77 1120.72 0.08 175.92 0.09 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0426 12.77 0.00 0.00 0.00 0.00 0.00 12.77 1124.04 0.08 188.61 0.09 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0426 12.77 0.00 0.00 0.00 0.00 0.00 12.77 1127.36 0.08 201.30 0.10 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0426 12.77 0.00 0.00 0.00 0.00 0.00 12.77 1130.68 0.08 213.99 0.10 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0426 12.77 0.00 0.00 0.00 0.00 0.00 12.77 1134.00 0.08 226.68 0.11 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0426 12.77 0.00 0.00 0.00 0.00 0.00 12.77 1137.32 0.08 239.37 0.12 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0426 12.77 0.00 0.00 0.00 0.00 0.00 12.77 1140.64 0.08 252.06 0.12 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0426 12.77 0.00 0.00 0.00 0.00 0.00 12.77 1143.96 0.08 264.74 0.13 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0479 14.36 0.00 0.00 0.00 0.00 0.00 14.36 1147.28 0.08 279.03 0.14 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0426 12.77 0.00 0.00 0.00 0.00 0.00 12.77 1151.02 0.08 291.71 0.14 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0479 14.36 0.00 0.00 0.00 0.00 0.00 14.36 1154.34 0.08 306.00 0.15 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0479 14.36 0.00 0.00 0.00 0.00 0.00 14.36 1158.08 0.08 320.28 0.16 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0479 14.36 0.00 0.00 0.00 0.00 0.00 14.36 1161.81 0.08 334.56 0.16 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0479 14.36 0.00 0.00 0.00 0.00 0.00 14.36 1165.55 0.08 348.84 0.17 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0479 14.36 0.00 0.00 0.00 0.00 0.00 14.36 1169.29 0.08 363.13 0.18 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0479 14.36 0.00 0.00 0.00 0.00 0.00 14.36 1173.02 0.08 377.41 0.18 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0479 14.36 0.00 0.00 0.00 0.00 0.00 14.36 1176.76 0.08 391.69 0.19 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0532 15.96 0.00 0.00 0.00 0.00 0.00 15.96 1180.50 0.08 407.57 0.20 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0532 15.96 0.00 0.00 0.00 0.00 0.00 15.96 1184.65 0.08 423.44 0.21 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0532 15.96 0.00 0.00 0.00 0.00 0.00 15.96 1188.81 0.08 439.32 0.21 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0532 15.96 0.00 0.00 0.00 0.00 0.00 15.96 1192.96 0.08 455.19 0.22 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0532 15.96 0.00 0.00 0.00 0.00 0.00 15.96 1197.12 0.08 471.07 0.23 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0585 17.55 0.00 0.00 0.00 0.00 0.00 17.55 1201.27 0.08 488.54 0.24 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0585 17.55 0.00 0.00 0.00 0.00 0.00 17.55 1205.84 0.08 506.01 0.25 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0585 17.55 0.00 0.00 0.00 0.00 0.00 17.55 1210.42 0.08 523.48 0.25 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0638 19.15 0.00 0.00 0.00 0.00 0.00 19.15 1214.99 0.08 542.55 0.26 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0692 20.75 0.00 0.00 0.00 0.00 0.00 20.75 1219.98 0.08 563.21 0.27 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0864 25.92 0.00 0.00 0.00 0.00 0.00 25.92 1225.38 0.09 589.05 0.29 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0864 25.92 0.00 0.00 0.00 0.00 0.00 25.92 1232.15 0.09 614.89 0.30 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.1396 41.88 0.00 0.00 0.00 0.00 0.00 41.88 1238.91 0.09 656.68 0.32 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.1396 41.88 0.00 0.00 0.00 0.00 0.00 41.88 1249.85 0.09 698.48 0.34 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.1928 57.84 0.00 0.00 0.00 0.00 0.00 57.84 1260.78 0.09 756.23 0.37 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.1928 57.84 0.00 0.00 0.00 0.00 0.00 57.84 1275.90 0.09 813.98 0.40 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.2460 73.80 0.00 0.00 0.00 0.00 0.00 73.80 1291.01 0.09 887.69 0.43 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.2992 89.76 0.00 0.00 0.00 0.00 0.00 89.76 1310.30 0.09 977.36 0.47 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.3524 105.72 0.00 0.00 0.00 0.00 0.00 105.72 1333.76 0.09 1082.99 0.53 0.00 0.00 603

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4:20 2 0.91 0.56 N/A 0.3468 0.4056 121.68 0.00 0.00 0.00 0.00 0.00 121.68 1361.40 0.09 1204.57 0.58 0.00 0.00 4:25 2.1 0.96 0.56 N/A 0.3922 0.4588 137.64 0.00 0.00 0.00 0.00 0.00 137.64 1393.22 0.10 1342.11 0.65 0.00 0.00 4:30 2.1 0.96 0.56 N/A 0.3922 0.4588 137.64 0.00 0.00 0.00 0.00 0.00 137.64 1429.21 0.10 1479.64 0.72 0.00 0.00 4:35 2.2 1.00 0.56 N/A 0.4377 0.5120 153.59 0.00 0.00 0.00 0.00 0.00 153.59 1465.20 0.10 1633.14 0.79 0.00 0.00 4:40 2.3 1.05 0.56 N/A 0.4832 0.5652 169.55 0.00 0.00 0.00 0.00 0.00 169.55 1505.37 0.10 1802.59 0.88 0.00 0.00 4:45 2.4 1.09 0.56 N/A 0.5287 0.6184 185.51 0.00 0.00 0.00 0.00 0.00 185.51 1549.71 0.11 1987.99 0.97 0.00 0.00 4:50 2.4 1.09 0.56 N/A 0.5287 0.6184 185.51 0.00 0.00 0.00 0.00 0.00 185.51 1598.23 0.11 2173.39 1.06 0.00 0.00 4:55 2.5 1.14 0.56 N/A 0.5742 0.6716 201.47 0.00 0.00 0.00 0.00 0.00 201.47 1646.75 0.11 2374.75 1.15 0.00 0.00 5:00 2.6 1.18 0.56 N/A 0.6196 0.7248 217.43 0.00 0.00 0.00 0.00 0.00 217.43 1699.44 0.12 2592.06 1.26 0.00 0.00 5:05 3.1 1.41 0.56 N/A 0.8470 0.9907 297.22 0.00 0.00 0.00 0.00 0.00 297.22 1756.31 0.12 2889.16 1.40 0.00 0.00 5:10 3.6 1.64 0.56 N/A 1.0744 1.2567 377.02 0.00 0.00 0.00 0.00 0.00 377.02 1834.06 0.13 3266.06 1.59 0.00 0.00 5:15 3.9 1.77 0.56 N/A 1.2109 1.4163 424.90 0.00 0.00 0.00 0.00 0.00 424.90 1932.68 0.13 3690.82 1.79 0.00 0.00 5:20 4.2 1.91 0.56 N/A 1.3473 1.5759 472.77 0.00 0.00 0.00 0.00 0.00 472.77 2043.84 0.14 4163.45 2.02 0.00 0.00 5:25 4.7 2.14 0.56 N/A 1.5747 1.8419 552.57 0.00 0.00 0.00 0.00 0.00 552.57 2167.52 0.15 4715.87 2.29 0.00 0.00 5:30 5.6 2.55 0.56 N/A 1.9840 2.3207 696.20 0.00 0.00 0.00 0.00 0.00 696.20 2312.08 0.16 5411.91 2.63 0.00 0.00 5:35 1.9 0.86 0.56 N/A 0.3013 0.3524 105.72 0.00 0.00 0.00 0.00 0.00 105.72 2494.22 0.17 5517.45 2.68 0.00 0.00 5:40 0.9 0.41 0.56 0.37 0.0409 0.0479 14.36 0.00 0.00 0.00 0.00 0.00 14.36 2521.84 0.18 5531.64 2.69 0.00 0.00 5:45 0.6 0.27 0.56 0.25 0.0273 0.0319 9.58 0.00 0.00 0.00 0.00 0.00 9.58 2525.55 0.18 5541.04 2.69 0.00 0.00 5:50 0.5 0.23 0.56 0.20 0.0227 0.0266 7.98 0.00 0.00 0.00 0.00 0.00 7.98 2528.01 0.18 5548.84 2.69 0.00 0.00 5:55 0.3 0.14 0.56 0.12 0.0136 0.0160 4.79 0.00 0.00 0.00 0.00 0.00 4.79 2530.06 0.18 5553.45 2.70 0.00 0.00 6:00 0.2 0.09 0.56 0.08 0.0091 0.0106 3.19 0.00 0.00 0.00 0.00 0.00 3.19 2531.26 0.18 5556.47 2.70 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2532.05 0.18 5556.29 2.70 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2532.01 0.18 5556.12 2.70 0.00 0.00 6:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2531.96 0.18 5555.94 2.70 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2531.91 0.18 5555.77 2.70 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2531.87 0.18 5555.59 2.70 0.00 0.00 6:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2531.82 0.18 5555.41 2.70 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2531.78 0.18 5555.24 2.70 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2531.73 0.18 5555.06 2.70 0.00 0.00 6:45 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2531.68 0.18 5554.89 2.70 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2531.64 0.18 5554.71 2.70 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2531.59 0.18 5554.54 2.70 0.00 0.00 7:00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2531.55 0.18 5554.36 2.70 0.00 0.00 Total volume (cf)5563.43 Total Overflow (cf)0.00
604

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24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0047 4.25 0.00 0.00 0.00 0.00 0.00 4.25 1078.00 0.22 4.03 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1079.05 0.22 10.18 0.00 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1080.66 0.23 16.34 0.01 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0095 8.51 0.00 0.00 0.00 0.00 0.00 8.51 1082.28 0.23 24.62 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1084.44 0.23 30.77 0.01 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1086.05 0.23 36.92 0.02 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1087.66 0.23 43.08 0.02 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0095 8.51 0.00 0.00 0.00 0.00 0.00 8.51 1089.27 0.23 51.36 0.02 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0095 8.51 0.00 0.00 0.00 0.00 0.00 8.51 1091.44 0.23 59.63 0.03 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0095 8.51 0.00 0.00 0.00 0.00 0.00 8.51 1093.61 0.23 67.91 0.03 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0118 10.63 0.00 0.00 0.00 0.00 0.00 10.63 1095.77 0.23 78.32 0.04 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0118 10.63 0.00 0.00 0.00 0.00 0.00 10.63 1098.49 0.23 88.72 0.04 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0118 10.63 0.00 0.00 0.00 0.00 0.00 10.63 1101.22 0.23 99.12 0.05 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0118 10.63 0.00 0.00 0.00 0.00 0.00 10.63 1103.94 0.23 109.52 0.05 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0118 10.63 0.00 0.00 0.00 0.00 0.00 10.63 1106.66 0.23 119.93 0.06 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0142 12.76 0.00 0.00 0.00 0.00 0.00 12.76 1109.38 0.23 132.45 0.06 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0142 12.76 0.00 0.00 0.00 0.00 0.00 12.76 1112.66 0.23 144.98 0.07 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0165 14.89 0.00 0.00 0.00 0.00 0.00 14.89 1115.94 0.23 159.63 0.08 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0165 14.89 0.00 0.00 0.00 0.00 0.00 14.89 1119.77 0.23 174.29 0.08 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0189 17.01 0.00 0.00 0.00 0.00 0.00 17.01 1123.61 0.23 191.06 0.09 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0142 12.76 0.00 0.00 0.00 0.00 0.00 12.76 1128.00 0.23 203.59 0.10 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0165 14.89 0.00 0.00 0.00 0.00 0.00 14.89 1131.28 0.24 218.24 0.11 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0189 17.01 0.00 0.00 0.00 0.00 0.00 17.01 1135.11 0.24 235.01 0.11 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0189 17.01 0.00 0.00 0.00 0.00 0.00 17.01 1139.50 0.24 251.79 0.12 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0213 19.14 0.00 0.00 0.00 0.00 0.00 19.14 1143.89 0.24 270.69 0.13 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0213 19.14 0.00 0.00 0.00 0.00 0.00 19.14 1148.83 0.24 289.58 0.14 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0236 21.26 0.00 0.00 0.00 0.00 0.00 21.26 1153.78 0.24 310.61 0.15 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0236 21.26 0.00 0.00 0.00 0.00 0.00 21.26 1159.28 0.24 331.63 0.16 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0236 21.26 0.00 0.00 0.00 0.00 0.00 21.26 1164.78 0.24 352.65 0.17 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0260 23.39 0.00 0.00 0.00 0.00 0.00 23.39 1170.28 0.24 375.80 0.18 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0284 25.52 0.00 0.00 0.00 0.00 0.00 25.52 1176.34 0.25 401.07 0.19 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0307 27.64 0.00 0.00 0.00 0.00 0.00 27.64 1182.96 0.25 428.47 0.21 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0354 31.90 0.00 0.00 0.00 0.00 0.00 31.90 1190.12 0.25 460.12 0.22 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0354 31.90 0.00 0.00 0.00 0.00 0.00 31.90 1198.41 0.25 491.77 0.24 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0378 34.02 0.00 0.00 0.00 0.00 0.00 34.02 1206.69 0.25 525.54 0.26 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0402 36.15 0.00 0.00 0.00 0.00 0.00 36.15 1215.53 0.25 561.43 0.27 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0449 40.40 0.00 0.00 0.00 0.00 0.00 40.40 1224.92 0.26 601.58 0.29 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0473 42.53 0.00 0.00 0.00 0.00 0.00 42.53 1235.43 0.26 643.85 0.31 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0496 44.66 0.00 0.00 0.00 0.00 0.00 44.66 1246.49 0.26 688.25 0.33 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0520 46.78 0.00 0.00 0.00 0.00 0.00 46.78 1258.11 0.26 734.77 0.36 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0354 31.90 0.00 0.00 0.00 0.00 0.00 31.90 1270.28 0.26 766.40 0.37 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0354 31.90 0.00 0.00 0.00 0.00 0.00 31.90 1278.56 0.27 798.03 0.39 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0473 42.53 0.00 0.00 0.00 0.00 0.00 42.53 1286.83 0.27 840.29 0.41 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0473 42.53 0.00 0.00 0.00 0.00 0.00 42.53 1297.89 0.27 882.55 0.43 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0449 40.40 0.00 0.00 0.00 0.00 0.00 40.40 1308.95 0.27 922.68 0.45 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0449 40.40 0.00 0.00 0.00 0.00 0.00 40.40 1319.45 0.27 962.81 0.47 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0402 36.15 0.00 0.00 0.00 0.00 0.00 36.15 1329.95 0.28 998.68 0.48 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0425 38.28 0.00 0.00 0.00 0.00 0.00 38.28 1339.34 0.28 1036.68 0.50 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0591 53.16 0.00 0.00 0.00 0.00 0.00 53.16 1349.28 0.28 1089.56 0.53 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0614 55.29 0.00 0.00 0.00 0.00 0.00 55.29 1363.12 0.28 1144.56 0.56 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0728 65.51 0.00 0.00 0.00 0.00 0.00 65.51 1377.52 0.29 1209.79 0.59 0.00 0.00 605

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13:00 2.9 0.59 0.50 N/A 0.0900 0.1053 94.77 0.00 0.00 0.00 0.00 0.00 94.77 1394.58 0.29 1304.27 0.63 0.00 0.00 13:15 3.4 0.69 0.49 N/A 0.1985 0.2322 208.99 0.00 0.00 0.00 0.00 0.00 208.99 1419.31 0.30 1512.97 0.73 0.00 0.00 13:30 3.4 0.69 0.48 N/A 0.2059 0.2409 216.79 0.00 0.00 0.00 0.00 0.00 216.79 1473.92 0.31 1729.45 0.84 0.00 0.00 13:45 2.3 0.46 0.47 0.42 0.0465 0.0543 48.91 0.00 0.00 0.00 0.00 0.00 48.91 1530.57 0.32 1778.04 0.86 0.00 0.00 14:00 2.3 0.46 0.47 0.42 0.0465 0.0543 48.91 0.00 0.00 0.00 0.00 0.00 48.91 1543.29 0.32 1826.63 0.89 0.00 0.00 14:15 2.7 0.55 0.46 N/A 0.0862 0.1008 90.72 0.00 0.00 0.00 0.00 0.00 90.72 1556.00 0.32 1917.03 0.93 0.00 0.00 14:30 2.6 0.53 0.45 N/A 0.0730 0.0854 76.85 0.00 0.00 0.00 0.00 0.00 76.85 1579.66 0.33 1993.55 0.97 0.00 0.00 14:45 2.6 0.53 0.45 N/A 0.0799 0.0935 84.13 0.00 0.00 0.00 0.00 0.00 84.13 1599.68 0.33 2077.34 1.01 0.00 0.00 15:00 2.5 0.51 0.44 N/A 0.0665 0.0778 70.03 0.00 0.00 0.00 0.00 0.00 70.03 1621.61 0.34 2147.03 1.04 0.00 0.00 15:15 2.4 0.48 0.43 N/A 0.0530 0.0620 55.83 0.00 0.00 0.00 0.00 0.00 55.83 1639.85 0.34 2202.52 1.07 0.00 0.00 15:30 2.3 0.46 0.43 0.42 0.0465 0.0543 48.91 0.00 0.00 0.00 0.00 0.00 48.91 1654.37 0.34 2251.09 1.09 0.00 0.00 15:45 1.9 0.38 0.42 0.35 0.0384 0.0449 40.40 0.00 0.00 0.00 0.00 0.00 40.40 1667.08 0.35 2291.14 1.11 0.00 0.00 16:00 1.9 0.38 0.41 0.35 0.0384 0.0449 40.40 0.00 0.00 0.00 0.00 0.00 40.40 1677.56 0.35 2331.20 1.13 0.00 0.00 16:15 0.4 0.08 0.41 0.07 0.0081 0.0095 8.51 0.00 0.00 0.00 0.00 0.00 8.51 1688.04 0.35 2339.35 1.14 0.00 0.00 16:30 0.4 0.08 0.40 0.07 0.0081 0.0095 8.51 0.00 0.00 0.00 0.00 0.00 8.51 1690.18 0.35 2347.50 1.14 0.00 0.00 16:45 0.3 0.06 0.39 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1692.31 0.35 2353.53 1.14 0.00 0.00 17:00 0.3 0.06 0.39 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1693.89 0.35 2359.56 1.15 0.00 0.00 17:15 0.5 0.10 0.38 0.09 0.0101 0.0118 10.63 0.00 0.00 0.00 0.00 0.00 10.63 1695.46 0.35 2369.84 1.15 0.00 0.00 17:30 0.5 0.10 0.38 0.09 0.0101 0.0118 10.63 0.00 0.00 0.00 0.00 0.00 10.63 1698.15 0.35 2380.11 1.16 0.00 0.00 17:45 0.5 0.10 0.37 0.09 0.0101 0.0118 10.63 0.00 0.00 0.00 0.00 0.00 10.63 1700.84 0.35 2390.39 1.16 0.00 0.00 18:00 0.4 0.08 0.37 0.07 0.0081 0.0095 8.51 0.00 0.00 0.00 0.00 0.00 8.51 1703.53 0.35 2398.54 1.16 0.00 0.00 18:15 0.4 0.08 0.36 0.07 0.0081 0.0095 8.51 0.00 0.00 0.00 0.00 0.00 8.51 1705.67 0.36 2406.69 1.17 0.00 0.00 18:30 0.4 0.08 0.35 0.07 0.0081 0.0095 8.51 0.00 0.00 0.00 0.00 0.00 8.51 1707.80 0.36 2414.84 1.17 0.00 0.00 18:45 0.3 0.06 0.35 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1709.93 0.36 2420.87 1.18 0.00 0.00 19:00 0.2 0.04 0.34 0.04 0.0040 0.0047 4.25 0.00 0.00 0.00 0.00 0.00 4.25 1711.51 0.36 2424.76 1.18 0.00 0.00 19:15 0.3 0.06 0.34 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1712.53 0.36 2430.79 1.18 0.00 0.00 19:30 0.4 0.08 0.34 0.07 0.0081 0.0095 8.51 0.00 0.00 0.00 0.00 0.00 8.51 1714.10 0.36 2438.93 1.18 0.00 0.00 19:45 0.3 0.06 0.33 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1716.24 0.36 2444.96 1.19 0.00 0.00 20:00 0.2 0.04 0.33 0.04 0.0040 0.0047 4.25 0.00 0.00 0.00 0.00 0.00 4.25 1717.81 0.36 2448.85 1.19 0.00 0.00 20:15 0.3 0.06 0.32 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1718.83 0.36 2454.87 1.19 0.00 0.00 20:30 0.3 0.06 0.32 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1720.41 0.36 2460.89 1.19 0.00 0.00 20:45 0.3 0.06 0.31 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1721.98 0.36 2466.91 1.20 0.00 0.00 21:00 0.2 0.04 0.31 0.04 0.0040 0.0047 4.25 0.00 0.00 0.00 0.00 0.00 4.25 1723.56 0.36 2470.81 1.20 0.00 0.00 21:15 0.3 0.06 0.31 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1724.58 0.36 2476.83 1.20 0.00 0.00 21:30 0.2 0.04 0.30 0.04 0.0040 0.0047 4.25 0.00 0.00 0.00 0.00 0.00 4.25 1726.15 0.36 2480.72 1.20 0.00 0.00 21:45 0.3 0.06 0.30 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1727.17 0.36 2486.74 1.21 0.00 0.00 22:00 0.2 0.04 0.30 0.04 0.0040 0.0047 4.25 0.00 0.00 0.00 0.00 0.00 4.25 1728.75 0.36 2490.63 1.21 0.00 0.00 22:15 0.3 0.06 0.29 0.05 0.0061 0.0071 6.38 0.00 0.00 0.00 0.00 0.00 6.38 1729.77 0.36 2496.65 1.21 0.00 0.00 22:30 0.2 0.04 0.29 0.04 0.0040 0.0047 4.25 0.00 0.00 0.00 0.00 0.00 4.25 1731.34 0.36 2500.55 1.21 0.00 0.00 22:45 0.2 0.04 0.29 0.04 0.0040 0.0047 4.25 0.00 0.00 0.00 0.00 0.00 4.25 1732.36 0.36 2504.44 1.22 0.00 0.00 23:00 0.2 0.04 0.29 0.04 0.0040 0.0047 4.25 0.00 0.00 0.00 0.00 0.00 4.25 1733.38 0.36 2508.33 1.22 0.00 0.00 23:15 0.2 0.04 0.28 0.04 0.0040 0.0047 4.25 0.00 0.00 0.00 0.00 0.00 4.25 1734.40 0.36 2512.22 1.22 0.00 0.00 23:30 0.2 0.04 0.28 0.04 0.0040 0.0047 4.25 0.00 0.00 0.00 0.00 0.00 4.25 1735.41 0.36 2516.11 1.22 0.00 0.00 23:45 0.2 0.04 0.28 0.04 0.0040 0.0047 4.25 0.00 0.00 0.00 0.00 0.00 4.25 1736.43 0.36 2520.00 1.22 0.00 0.00 24:00 0.2 0.04 0.28 0.04 0.0040 0.0047 4.25 0.00 0.00 0.00 0.00 0.00 4.25 1737.45 0.36 2523.89 1.23 0.00 0.00 0 0.00 0.28 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1738.47 0.36 2523.53 1.23 0.00 0.00 Total volume (cf)2552.09 Total Overflow (cf)0.00
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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=1.09ac+0.09ac typ street frontage=1.18ac 5/7/2024 LOT 3
Drainage Area (ac.)1.1800 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 AND 0.09AC TYPICAL STREET FRONTAGE Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =3234 s.f.Bot. =1078 s.f.Max. Depth (d)=4 Max. storage=8238.87 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.6035 181.04 0.00 0.00 0.00 0.00 0.00 181.04 1078.00 0.07 180.97 0.09 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.9820 294.60 0.00 0.00 0.00 0.00 0.00 294.60 1125.36 0.08 475.49 0.23 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 1.0852 325.57 0.00 0.00 0.00 0.00 0.00 325.57 1202.43 0.08 800.97 0.39 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 1.0164 304.92 0.00 0.00 0.00 0.00 0.00 304.92 1287.60 0.09 1105.80 0.54 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 1.6014 480.41 0.00 0.00 0.00 0.00 0.00 480.41 1367.37 0.09 1586.11 0.77 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 1.8422 552.67 0.00 0.00 0.00 0.00 0.00 552.67 1493.06 0.10 2138.68 1.04 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 2.2207 666.22 0.00 0.00 0.00 0.00 0.00 666.22 1637.66 0.11 2804.79 1.36 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 2.4272 728.16 0.00 0.00 0.00 0.00 0.00 728.16 1811.98 0.13 3532.83 1.72 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 3.5627 1068.82 0.00 0.00 0.00 0.00 0.00 1068.82 2002.49 0.14 4601.51 2.23 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 5.3865 1615.94 0.00 0.00 0.00 0.00 0.00 1615.94 2282.15 0.16 6217.29 3.02 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 4.8703 1461.09 0.00 0.00 0.00 0.00 0.00 1461.09 2704.98 0.19 7678.20 3.73 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.7755 232.66 0.00 0.00 0.00 0.00 0.00 232.66 3087.28 0.21 7910.64 3.84 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3148.11 0.22 7910.43 3.84 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3148.05 0.22 7910.21 3.84 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3147.99 0.22 7909.99 3.84 0.00 0.00 Total volume (cf)7912.11 Total Overflow (cf)0.00
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0575 17.26 0.00 0.00 0.00 0.00 0.00 17.26 1078.00 0.07 17.19 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0575 17.26 0.00 0.00 0.00 0.00 0.00 17.26 1082.50 0.08 34.37 0.02 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1087.00 0.08 48.91 0.02 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0664 19.92 0.00 0.00 0.00 0.00 0.00 19.92 1090.80 0.08 68.75 0.03 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0664 19.92 0.00 0.00 0.00 0.00 0.00 19.92 1095.99 0.08 88.59 0.04 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 1101.18 0.08 126.62 0.06 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0664 19.92 0.00 0.00 0.00 0.00 0.00 19.92 1111.13 0.08 146.46 0.07 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 1116.33 0.08 184.49 0.09 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 1126.28 0.08 222.52 0.11 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0664 19.92 0.00 0.00 0.00 0.00 0.00 19.92 1136.23 0.08 242.36 0.12 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0708 21.25 0.00 0.00 0.00 0.00 0.00 21.25 1141.42 0.08 263.52 0.13 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 1146.96 0.08 301.55 0.15 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.3041 91.22 0.00 0.00 0.00 0.00 0.00 91.22 1156.91 0.08 392.69 0.19 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.3041 91.22 0.00 0.00 0.00 0.00 0.00 91.22 1180.76 0.08 483.83 0.23 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.3041 91.22 0.00 0.00 0.00 0.00 0.00 91.22 1204.61 0.08 574.97 0.28 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.2155 64.66 0.00 0.00 0.00 0.00 0.00 64.66 1228.46 0.09 639.54 0.31 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.4811 144.33 0.00 0.00 0.00 0.00 0.00 144.33 1245.36 0.09 783.79 0.38 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.5254 157.61 0.00 0.00 0.00 0.00 0.00 157.61 1283.11 0.09 941.32 0.46 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.3926 117.78 0.00 0.00 0.00 0.00 0.00 117.78 1324.33 0.09 1059.00 0.51 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.5254 157.61 0.00 0.00 0.00 0.00 0.00 157.61 1355.13 0.09 1216.52 0.59 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.7909 237.28 0.00 0.00 0.00 0.00 0.00 237.28 1396.35 0.10 1453.71 0.71 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.7024 210.73 0.00 0.00 0.00 0.00 0.00 210.73 1458.42 0.10 1664.34 0.81 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.6139 184.17 0.00 0.00 0.00 0.00 0.00 184.17 1513.53 0.11 1848.40 0.90 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.6582 197.45 0.00 0.00 0.00 0.00 0.00 197.45 1561.70 0.11 2045.74 0.99 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.7024 210.73 0.00 0.00 0.00 0.00 0.00 210.73 1613.34 0.11 2256.36 1.10 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 1.1893 356.79 0.00 0.00 0.00 0.00 0.00 356.79 1668.46 0.12 2613.03 1.27 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 1.5434 463.02 0.00 0.00 0.00 0.00 0.00 463.02 1761.80 0.12 3075.93 1.49 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.8795 263.84 0.00 0.00 0.00 0.00 0.00 263.84 1882.93 0.13 3339.64 1.62 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 2.3401 702.03 0.00 0.00 0.00 0.00 0.00 702.03 1951.94 0.14 4041.54 1.96 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 2.5614 768.43 0.00 0.00 0.00 0.00 0.00 768.43 2135.62 0.15 4809.82 2.34 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 2.9598 887.93 0.00 0.00 0.00 0.00 0.00 887.93 2336.66 0.16 5697.59 2.77 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 1.9418 582.53 0.00 0.00 0.00 0.00 0.00 582.53 2568.98 0.18 6279.94 3.05 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.2155 64.66 0.00 0.00 0.00 0.00 0.00 64.66 2721.37 0.19 6344.41 3.08 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 2738.25 0.19 6382.33 3.10 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 2748.17 0.19 6420.24 3.12 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0266 7.97 0.00 0.00 0.00 0.00 0.00 7.97 2758.09 0.19 6428.02 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2760.13 0.19 6427.83 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2760.08 0.19 6427.64 3.12 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2760.02 0.19 6427.44 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.97 0.19 6427.25 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.92 0.19 6427.06 3.12 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.87 0.19 6426.87 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.82 0.19 6426.68 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.77 0.19 6426.49 3.12 0.00 0.00 Total volume (cf)6431.91 Total Overflow (cf)0.00
608

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6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0271 8.12 0.00 0.00 0.00 0.00 0.00 8.12 1078.00 0.07 8.04 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0325 9.74 0.00 0.00 0.00 0.00 0.00 9.74 1080.10 0.08 17.71 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0325 9.74 0.00 0.00 0.00 0.00 0.00 9.74 1082.63 0.08 27.37 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0325 9.74 0.00 0.00 0.00 0.00 0.00 9.74 1085.16 0.08 37.04 0.02 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0325 9.74 0.00 0.00 0.00 0.00 0.00 9.74 1087.69 0.08 46.70 0.02 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1090.22 0.08 57.99 0.03 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1093.18 0.08 69.28 0.03 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1096.13 0.08 80.57 0.04 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1099.08 0.08 91.85 0.04 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1102.04 0.08 103.14 0.05 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1104.99 0.08 114.43 0.06 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1107.94 0.08 127.34 0.06 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1111.32 0.08 140.25 0.07 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1114.70 0.08 153.16 0.07 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1118.08 0.08 166.07 0.08 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1121.46 0.08 178.98 0.09 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1124.84 0.08 191.89 0.09 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1128.21 0.08 204.80 0.10 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1131.59 0.08 217.70 0.11 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1134.97 0.08 230.61 0.11 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1138.35 0.08 243.52 0.12 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1141.73 0.08 256.43 0.12 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1145.10 0.08 269.34 0.13 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1148.48 0.08 283.87 0.14 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1152.28 0.08 296.78 0.14 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1155.66 0.08 311.31 0.15 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1159.46 0.08 325.84 0.16 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1163.27 0.08 340.37 0.17 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1167.07 0.08 354.90 0.17 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1170.87 0.08 369.42 0.18 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1174.67 0.08 383.95 0.19 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1178.48 0.08 398.48 0.19 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1182.28 0.08 414.63 0.20 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1186.50 0.08 430.79 0.21 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1190.73 0.08 446.94 0.22 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1194.96 0.08 463.09 0.22 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1199.18 0.08 479.24 0.23 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0595 17.86 0.00 0.00 0.00 0.00 0.00 17.86 1203.41 0.08 497.01 0.24 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0595 17.86 0.00 0.00 0.00 0.00 0.00 17.86 1208.06 0.08 514.79 0.25 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0595 17.86 0.00 0.00 0.00 0.00 0.00 17.86 1212.71 0.08 532.56 0.26 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0649 19.48 0.00 0.00 0.00 0.00 0.00 19.48 1217.36 0.08 551.96 0.27 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0703 21.10 0.00 0.00 0.00 0.00 0.00 21.10 1222.44 0.08 572.98 0.28 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0879 26.37 0.00 0.00 0.00 0.00 0.00 26.37 1227.94 0.09 599.26 0.29 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0879 26.37 0.00 0.00 0.00 0.00 0.00 26.37 1234.82 0.09 625.55 0.30 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.1420 42.60 0.00 0.00 0.00 0.00 0.00 42.60 1241.70 0.09 668.06 0.32 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.1420 42.60 0.00 0.00 0.00 0.00 0.00 42.60 1252.82 0.09 710.58 0.34 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.1961 58.84 0.00 0.00 0.00 0.00 0.00 58.84 1263.95 0.09 769.33 0.37 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.1961 58.84 0.00 0.00 0.00 0.00 0.00 58.84 1279.32 0.09 828.08 0.40 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.2502 75.07 0.00 0.00 0.00 0.00 0.00 75.07 1294.70 0.09 903.06 0.44 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.3044 91.31 0.00 0.00 0.00 0.00 0.00 91.31 1314.32 0.09 994.28 0.48 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.3585 107.54 0.00 0.00 0.00 0.00 0.00 107.54 1338.19 0.09 1101.73 0.53 0.00 0.00 609

4 of 6
4:20 2 0.91 0.56 N/A 0.3468 0.4126 123.77 0.00 0.00 0.00 0.00 0.00 123.77 1366.31 0.09 1225.40 0.59 0.00 0.00 4:25 2.1 0.96 0.56 N/A 0.3922 0.4667 140.01 0.00 0.00 0.00 0.00 0.00 140.01 1398.67 0.10 1365.32 0.66 0.00 0.00 4:30 2.1 0.96 0.56 N/A 0.3922 0.4667 140.01 0.00 0.00 0.00 0.00 0.00 140.01 1435.28 0.10 1505.23 0.73 0.00 0.00 4:35 2.2 1.00 0.56 N/A 0.4377 0.5208 156.24 0.00 0.00 0.00 0.00 0.00 156.24 1471.90 0.10 1661.37 0.81 0.00 0.00 4:40 2.3 1.05 0.56 N/A 0.4832 0.5749 172.48 0.00 0.00 0.00 0.00 0.00 172.48 1512.76 0.11 1833.74 0.89 0.00 0.00 4:45 2.4 1.09 0.56 N/A 0.5287 0.6290 188.71 0.00 0.00 0.00 0.00 0.00 188.71 1557.86 0.11 2022.34 0.98 0.00 0.00 4:50 2.4 1.09 0.56 N/A 0.5287 0.6290 188.71 0.00 0.00 0.00 0.00 0.00 188.71 1607.22 0.11 2210.94 1.07 0.00 0.00 4:55 2.5 1.14 0.56 N/A 0.5742 0.6831 204.94 0.00 0.00 0.00 0.00 0.00 204.94 1656.57 0.12 2415.77 1.17 0.00 0.00 5:00 2.6 1.18 0.56 N/A 0.6196 0.7373 221.18 0.00 0.00 0.00 0.00 0.00 221.18 1710.17 0.12 2636.83 1.28 0.00 0.00 5:05 3.1 1.41 0.56 N/A 0.8470 1.0078 302.35 0.00 0.00 0.00 0.00 0.00 302.35 1768.02 0.12 2939.06 1.43 0.00 0.00 5:10 3.6 1.64 0.56 N/A 1.0744 1.2784 383.52 0.00 0.00 0.00 0.00 0.00 383.52 1847.11 0.13 3322.45 1.61 0.00 0.00 5:15 3.9 1.77 0.56 N/A 1.2109 1.4407 432.22 0.00 0.00 0.00 0.00 0.00 432.22 1947.44 0.14 3754.54 1.82 0.00 0.00 5:20 4.2 1.91 0.56 N/A 1.3473 1.6031 480.92 0.00 0.00 0.00 0.00 0.00 480.92 2060.51 0.14 4235.32 2.06 0.00 0.00 5:25 4.7 2.14 0.56 N/A 1.5747 1.8736 562.09 0.00 0.00 0.00 0.00 0.00 562.09 2186.32 0.15 4797.26 2.33 0.00 0.00 5:30 5.6 2.55 0.56 N/A 1.9840 2.3607 708.20 0.00 0.00 0.00 0.00 0.00 708.20 2333.38 0.16 5505.30 2.67 0.00 0.00 5:35 1.9 0.86 0.56 N/A 0.3013 0.3585 107.54 0.00 0.00 0.00 0.00 0.00 107.54 2518.66 0.17 5612.66 2.72 0.00 0.00 5:40 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 2546.76 0.18 5627.10 2.73 0.00 0.00 5:45 0.6 0.27 0.56 0.25 0.0273 0.0325 9.74 0.00 0.00 0.00 0.00 0.00 9.74 2550.54 0.18 5636.66 2.74 0.00 0.00 5:50 0.5 0.23 0.56 0.20 0.0227 0.0271 8.12 0.00 0.00 0.00 0.00 0.00 8.12 2553.04 0.18 5644.60 2.74 0.00 0.00 5:55 0.3 0.14 0.56 0.12 0.0136 0.0162 4.87 0.00 0.00 0.00 0.00 0.00 4.87 2555.12 0.18 5649.29 2.74 0.00 0.00 6:00 0.2 0.09 0.56 0.08 0.0091 0.0108 3.25 0.00 0.00 0.00 0.00 0.00 3.25 2556.34 0.18 5652.36 2.74 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2557.15 0.18 5652.19 2.74 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2557.10 0.18 5652.01 2.74 0.00 0.00 6:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2557.05 0.18 5651.83 2.74 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2557.01 0.18 5651.65 2.74 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2556.96 0.18 5651.48 2.74 0.00 0.00 6:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2556.91 0.18 5651.30 2.74 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2556.87 0.18 5651.12 2.74 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2556.82 0.18 5650.94 2.74 0.00 0.00 6:45 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2556.78 0.18 5650.77 2.74 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2556.73 0.18 5650.59 2.74 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2556.68 0.18 5650.41 2.74 0.00 0.00 7:00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2556.64 0.18 5650.23 2.74 0.00 0.00 Total volume (cf)5659.35 Total Overflow (cf)0.00
610

5 of 6
24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1078.00 0.22 4.10 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1079.07 0.22 10.37 0.01 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1080.71 0.23 16.63 0.01 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1082.35 0.23 25.06 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1084.56 0.23 31.32 0.02 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1086.20 0.23 37.58 0.02 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1087.84 0.23 43.85 0.02 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1089.47 0.23 52.27 0.03 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1091.68 0.23 60.70 0.03 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1093.88 0.23 69.12 0.03 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1096.09 0.23 79.71 0.04 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1098.86 0.23 90.30 0.04 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1101.63 0.23 100.88 0.05 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1104.40 0.23 111.47 0.05 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1107.17 0.23 122.05 0.06 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0144 12.98 0.00 0.00 0.00 0.00 0.00 12.98 1109.94 0.23 134.80 0.07 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0144 12.98 0.00 0.00 0.00 0.00 0.00 12.98 1113.28 0.23 147.55 0.07 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0168 15.14 0.00 0.00 0.00 0.00 0.00 15.14 1116.61 0.23 162.46 0.08 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0168 15.14 0.00 0.00 0.00 0.00 0.00 15.14 1120.51 0.23 177.36 0.09 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0192 17.30 0.00 0.00 0.00 0.00 0.00 17.30 1124.41 0.23 194.43 0.09 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0144 12.98 0.00 0.00 0.00 0.00 0.00 12.98 1128.88 0.24 207.18 0.10 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0168 15.14 0.00 0.00 0.00 0.00 0.00 15.14 1132.22 0.24 222.08 0.11 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0192 17.30 0.00 0.00 0.00 0.00 0.00 17.30 1136.12 0.24 239.15 0.12 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0192 17.30 0.00 0.00 0.00 0.00 0.00 17.30 1140.58 0.24 256.22 0.12 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0216 19.47 0.00 0.00 0.00 0.00 0.00 19.47 1145.05 0.24 275.45 0.13 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0216 19.47 0.00 0.00 0.00 0.00 0.00 19.47 1150.08 0.24 294.68 0.14 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0240 21.63 0.00 0.00 0.00 0.00 0.00 21.63 1155.11 0.24 316.07 0.15 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0240 21.63 0.00 0.00 0.00 0.00 0.00 21.63 1160.71 0.24 337.46 0.16 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0240 21.63 0.00 0.00 0.00 0.00 0.00 21.63 1166.31 0.24 358.85 0.17 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0264 23.79 0.00 0.00 0.00 0.00 0.00 23.79 1171.91 0.24 382.40 0.19 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0288 25.96 0.00 0.00 0.00 0.00 0.00 25.96 1178.07 0.25 408.11 0.20 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0312 28.12 0.00 0.00 0.00 0.00 0.00 28.12 1184.80 0.25 435.98 0.21 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0361 32.45 0.00 0.00 0.00 0.00 0.00 32.45 1192.09 0.25 468.18 0.23 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0361 32.45 0.00 0.00 0.00 0.00 0.00 32.45 1200.52 0.25 500.38 0.24 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0385 34.61 0.00 0.00 0.00 0.00 0.00 34.61 1208.94 0.25 534.73 0.26 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0409 36.77 0.00 0.00 0.00 0.00 0.00 36.77 1217.93 0.25 571.25 0.28 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0457 41.10 0.00 0.00 0.00 0.00 0.00 41.10 1227.49 0.26 612.10 0.30 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0481 43.26 0.00 0.00 0.00 0.00 0.00 43.26 1238.18 0.26 655.10 0.32 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0505 45.43 0.00 0.00 0.00 0.00 0.00 45.43 1249.43 0.26 700.27 0.34 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0529 47.59 0.00 0.00 0.00 0.00 0.00 47.59 1261.25 0.26 747.59 0.36 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0361 32.45 0.00 0.00 0.00 0.00 0.00 32.45 1273.63 0.27 779.77 0.38 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0361 32.45 0.00 0.00 0.00 0.00 0.00 32.45 1282.06 0.27 811.95 0.39 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0481 43.26 0.00 0.00 0.00 0.00 0.00 43.26 1290.48 0.27 854.95 0.42 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0481 43.26 0.00 0.00 0.00 0.00 0.00 43.26 1301.73 0.27 897.94 0.44 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0457 41.10 0.00 0.00 0.00 0.00 0.00 41.10 1312.98 0.27 938.76 0.46 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0457 41.10 0.00 0.00 0.00 0.00 0.00 41.10 1323.66 0.28 979.59 0.48 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0409 36.77 0.00 0.00 0.00 0.00 0.00 36.77 1334.34 0.28 1016.08 0.49 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0433 38.94 0.00 0.00 0.00 0.00 0.00 38.94 1343.89 0.28 1054.74 0.51 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0601 54.08 0.00 0.00 0.00 0.00 0.00 54.08 1354.01 0.28 1108.53 0.54 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0625 56.24 0.00 0.00 0.00 0.00 0.00 56.24 1368.09 0.29 1164.49 0.57 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0740 66.64 0.00 0.00 0.00 0.00 0.00 66.64 1382.73 0.29 1230.84 0.60 0.00 0.00 611

6 of 6
13:00 2.9 0.59 0.50 N/A 0.0900 0.1071 96.41 0.00 0.00 0.00 0.00 0.00 96.41 1400.09 0.29 1326.96 0.64 0.00 0.00 13:15 3.4 0.69 0.49 N/A 0.1985 0.2362 212.60 0.00 0.00 0.00 0.00 0.00 212.60 1425.25 0.30 1539.26 0.75 0.00 0.00 13:30 3.4 0.69 0.48 N/A 0.2059 0.2450 220.53 0.00 0.00 0.00 0.00 0.00 220.53 1480.80 0.31 1759.48 0.85 0.00 0.00 13:45 2.3 0.46 0.47 0.42 0.0465 0.0553 49.75 0.00 0.00 0.00 0.00 0.00 49.75 1538.43 0.32 1808.91 0.88 0.00 0.00 14:00 2.3 0.46 0.47 0.42 0.0465 0.0553 49.75 0.00 0.00 0.00 0.00 0.00 49.75 1551.37 0.32 1858.34 0.90 0.00 0.00 14:15 2.7 0.55 0.46 N/A 0.0862 0.1025 92.29 0.00 0.00 0.00 0.00 0.00 92.29 1564.30 0.33 1950.30 0.95 0.00 0.00 14:30 2.6 0.53 0.45 N/A 0.0730 0.0869 78.17 0.00 0.00 0.00 0.00 0.00 78.17 1588.37 0.33 2028.14 0.98 0.00 0.00 14:45 2.6 0.53 0.45 N/A 0.0799 0.0951 85.58 0.00 0.00 0.00 0.00 0.00 85.58 1608.74 0.34 2113.38 1.03 0.00 0.00 15:00 2.5 0.51 0.44 N/A 0.0665 0.0792 71.24 0.00 0.00 0.00 0.00 0.00 71.24 1631.04 0.34 2184.28 1.06 0.00 0.00 15:15 2.4 0.48 0.43 N/A 0.0530 0.0631 56.79 0.00 0.00 0.00 0.00 0.00 56.79 1649.60 0.34 2240.73 1.09 0.00 0.00 15:30 2.3 0.46 0.43 0.42 0.0465 0.0553 49.75 0.00 0.00 0.00 0.00 0.00 49.75 1664.37 0.35 2290.14 1.11 0.00 0.00 15:45 1.9 0.38 0.42 0.35 0.0384 0.0457 41.10 0.00 0.00 0.00 0.00 0.00 41.10 1677.30 0.35 2330.89 1.13 0.00 0.00 16:00 1.9 0.38 0.41 0.35 0.0384 0.0457 41.10 0.00 0.00 0.00 0.00 0.00 41.10 1687.96 0.35 2371.64 1.15 0.00 0.00 16:15 0.4 0.08 0.41 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1698.63 0.35 2379.94 1.16 0.00 0.00 16:30 0.4 0.08 0.40 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1700.80 0.35 2388.23 1.16 0.00 0.00 16:45 0.3 0.06 0.39 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1702.97 0.35 2394.37 1.16 0.00 0.00 17:00 0.3 0.06 0.39 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1704.57 0.36 2400.50 1.17 0.00 0.00 17:15 0.5 0.10 0.38 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1706.18 0.36 2410.96 1.17 0.00 0.00 17:30 0.5 0.10 0.38 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1708.92 0.36 2421.42 1.18 0.00 0.00 17:45 0.5 0.10 0.37 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1711.65 0.36 2431.88 1.18 0.00 0.00 18:00 0.4 0.08 0.37 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1714.39 0.36 2440.18 1.18 0.00 0.00 18:15 0.4 0.08 0.36 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1716.56 0.36 2448.47 1.19 0.00 0.00 18:30 0.4 0.08 0.35 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1718.73 0.36 2456.77 1.19 0.00 0.00 18:45 0.3 0.06 0.35 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1720.90 0.36 2462.90 1.20 0.00 0.00 19:00 0.2 0.04 0.34 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1722.51 0.36 2466.86 1.20 0.00 0.00 19:15 0.3 0.06 0.34 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1723.54 0.36 2472.99 1.20 0.00 0.00 19:30 0.4 0.08 0.34 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1725.15 0.36 2481.29 1.20 0.00 0.00 19:45 0.3 0.06 0.33 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1727.32 0.36 2487.42 1.21 0.00 0.00 20:00 0.2 0.04 0.33 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1728.92 0.36 2491.38 1.21 0.00 0.00 20:15 0.3 0.06 0.32 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1729.96 0.36 2497.51 1.21 0.00 0.00 20:30 0.3 0.06 0.32 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1731.56 0.36 2503.64 1.22 0.00 0.00 20:45 0.3 0.06 0.31 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1733.17 0.36 2509.77 1.22 0.00 0.00 21:00 0.2 0.04 0.31 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1734.77 0.36 2513.73 1.22 0.00 0.00 21:15 0.3 0.06 0.31 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1735.81 0.36 2519.86 1.22 0.00 0.00 21:30 0.2 0.04 0.30 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1737.41 0.36 2523.83 1.23 0.00 0.00 21:45 0.3 0.06 0.30 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1738.45 0.36 2529.95 1.23 0.00 0.00 22:00 0.2 0.04 0.30 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1740.05 0.36 2533.92 1.23 0.00 0.00 22:15 0.3 0.06 0.29 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1741.09 0.36 2540.04 1.23 0.00 0.00 22:30 0.2 0.04 0.29 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1742.69 0.36 2544.01 1.24 0.00 0.00 22:45 0.2 0.04 0.29 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1743.73 0.36 2547.97 1.24 0.00 0.00 23:00 0.2 0.04 0.29 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1744.77 0.36 2551.93 1.24 0.00 0.00 23:15 0.2 0.04 0.28 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1745.81 0.36 2555.89 1.24 0.00 0.00 23:30 0.2 0.04 0.28 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1746.84 0.36 2559.86 1.24 0.00 0.00 23:45 0.2 0.04 0.28 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1747.88 0.36 2563.82 1.24 0.00 0.00 24:00 0.2 0.04 0.28 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1748.92 0.36 2567.78 1.25 0.00 0.00 0 0.00 0.28 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1749.95 0.36 2567.42 1.25 0.00 0.00 Total volume (cf)2596.09 Total Overflow (cf)0.00
612

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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=1.09ac+0.09ac typ street frontage=1.18ac 5/7/2024 LOT 4
Drainage Area (ac.)1.1800 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 AND 0.09AC TYPICAL STREET FRONTAGE Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =3234 s.f.Bot. =1078 s.f.Max. Depth (d)=4 Max. storage=8238.87 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.6035 181.04 0.00 0.00 0.00 0.00 0.00 181.04 1078.00 0.07 180.97 0.09 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.9820 294.60 0.00 0.00 0.00 0.00 0.00 294.60 1125.36 0.08 475.49 0.23 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 1.0852 325.57 0.00 0.00 0.00 0.00 0.00 325.57 1202.43 0.08 800.97 0.39 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 1.0164 304.92 0.00 0.00 0.00 0.00 0.00 304.92 1287.60 0.09 1105.80 0.54 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 1.6014 480.41 0.00 0.00 0.00 0.00 0.00 480.41 1367.37 0.09 1586.11 0.77 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 1.8422 552.67 0.00 0.00 0.00 0.00 0.00 552.67 1493.06 0.10 2138.68 1.04 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 2.2207 666.22 0.00 0.00 0.00 0.00 0.00 666.22 1637.66 0.11 2804.79 1.36 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 2.4272 728.16 0.00 0.00 0.00 0.00 0.00 728.16 1811.98 0.13 3532.83 1.72 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 3.5627 1068.82 0.00 0.00 0.00 0.00 0.00 1068.82 2002.49 0.14 4601.51 2.23 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 5.3865 1615.94 0.00 0.00 0.00 0.00 0.00 1615.94 2282.15 0.16 6217.29 3.02 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 4.8703 1461.09 0.00 0.00 0.00 0.00 0.00 1461.09 2704.98 0.19 7678.20 3.73 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.7755 232.66 0.00 0.00 0.00 0.00 0.00 232.66 3087.28 0.21 7910.64 3.84 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3148.11 0.22 7910.43 3.84 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3148.05 0.22 7910.21 3.84 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3147.99 0.22 7909.99 3.84 0.00 0.00 Total volume (cf)7912.11 Total Overflow (cf)0.00
613
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0575 17.26 0.00 0.00 0.00 0.00 0.00 17.26 1078.00 0.07 17.19 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0575 17.26 0.00 0.00 0.00 0.00 0.00 17.26 1082.50 0.08 34.37 0.02 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1087.00 0.08 48.91 0.02 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0664 19.92 0.00 0.00 0.00 0.00 0.00 19.92 1090.80 0.08 68.75 0.03 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0664 19.92 0.00 0.00 0.00 0.00 0.00 19.92 1095.99 0.08 88.59 0.04 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 1101.18 0.08 126.62 0.06 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0664 19.92 0.00 0.00 0.00 0.00 0.00 19.92 1111.13 0.08 146.46 0.07 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 1116.33 0.08 184.49 0.09 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 1126.28 0.08 222.52 0.11 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0664 19.92 0.00 0.00 0.00 0.00 0.00 19.92 1136.23 0.08 242.36 0.12 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0708 21.25 0.00 0.00 0.00 0.00 0.00 21.25 1141.42 0.08 263.52 0.13 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 1146.96 0.08 301.55 0.15 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.3041 91.22 0.00 0.00 0.00 0.00 0.00 91.22 1156.91 0.08 392.69 0.19 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.3041 91.22 0.00 0.00 0.00 0.00 0.00 91.22 1180.76 0.08 483.83 0.23 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.3041 91.22 0.00 0.00 0.00 0.00 0.00 91.22 1204.61 0.08 574.97 0.28 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.2155 64.66 0.00 0.00 0.00 0.00 0.00 64.66 1228.46 0.09 639.54 0.31 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.4811 144.33 0.00 0.00 0.00 0.00 0.00 144.33 1245.36 0.09 783.79 0.38 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.5254 157.61 0.00 0.00 0.00 0.00 0.00 157.61 1283.11 0.09 941.32 0.46 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.3926 117.78 0.00 0.00 0.00 0.00 0.00 117.78 1324.33 0.09 1059.00 0.51 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.5254 157.61 0.00 0.00 0.00 0.00 0.00 157.61 1355.13 0.09 1216.52 0.59 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.7909 237.28 0.00 0.00 0.00 0.00 0.00 237.28 1396.35 0.10 1453.71 0.71 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.7024 210.73 0.00 0.00 0.00 0.00 0.00 210.73 1458.42 0.10 1664.34 0.81 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.6139 184.17 0.00 0.00 0.00 0.00 0.00 184.17 1513.53 0.11 1848.40 0.90 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.6582 197.45 0.00 0.00 0.00 0.00 0.00 197.45 1561.70 0.11 2045.74 0.99 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.7024 210.73 0.00 0.00 0.00 0.00 0.00 210.73 1613.34 0.11 2256.36 1.10 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 1.1893 356.79 0.00 0.00 0.00 0.00 0.00 356.79 1668.46 0.12 2613.03 1.27 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 1.5434 463.02 0.00 0.00 0.00 0.00 0.00 463.02 1761.80 0.12 3075.93 1.49 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.8795 263.84 0.00 0.00 0.00 0.00 0.00 263.84 1882.93 0.13 3339.64 1.62 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 2.3401 702.03 0.00 0.00 0.00 0.00 0.00 702.03 1951.94 0.14 4041.54 1.96 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 2.5614 768.43 0.00 0.00 0.00 0.00 0.00 768.43 2135.62 0.15 4809.82 2.34 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 2.9598 887.93 0.00 0.00 0.00 0.00 0.00 887.93 2336.66 0.16 5697.59 2.77 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 1.9418 582.53 0.00 0.00 0.00 0.00 0.00 582.53 2568.98 0.18 6279.94 3.05 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.2155 64.66 0.00 0.00 0.00 0.00 0.00 64.66 2721.37 0.19 6344.41 3.08 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 2738.25 0.19 6382.33 3.10 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 2748.17 0.19 6420.24 3.12 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0266 7.97 0.00 0.00 0.00 0.00 0.00 7.97 2758.09 0.19 6428.02 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2760.13 0.19 6427.83 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2760.08 0.19 6427.64 3.12 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2760.02 0.19 6427.44 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.97 0.19 6427.25 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.92 0.19 6427.06 3.12 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.87 0.19 6426.87 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.82 0.19 6426.68 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.77 0.19 6426.49 3.12 0.00 0.00 Total volume (cf)6431.91 Total Overflow (cf)0.00
614

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6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0271 8.12 0.00 0.00 0.00 0.00 0.00 8.12 1078.00 0.07 8.04 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0325 9.74 0.00 0.00 0.00 0.00 0.00 9.74 1080.10 0.08 17.71 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0325 9.74 0.00 0.00 0.00 0.00 0.00 9.74 1082.63 0.08 27.37 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0325 9.74 0.00 0.00 0.00 0.00 0.00 9.74 1085.16 0.08 37.04 0.02 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0325 9.74 0.00 0.00 0.00 0.00 0.00 9.74 1087.69 0.08 46.70 0.02 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1090.22 0.08 57.99 0.03 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1093.18 0.08 69.28 0.03 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1096.13 0.08 80.57 0.04 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1099.08 0.08 91.85 0.04 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1102.04 0.08 103.14 0.05 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1104.99 0.08 114.43 0.06 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1107.94 0.08 127.34 0.06 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1111.32 0.08 140.25 0.07 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1114.70 0.08 153.16 0.07 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1118.08 0.08 166.07 0.08 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1121.46 0.08 178.98 0.09 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1124.84 0.08 191.89 0.09 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1128.21 0.08 204.80 0.10 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1131.59 0.08 217.70 0.11 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1134.97 0.08 230.61 0.11 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1138.35 0.08 243.52 0.12 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1141.73 0.08 256.43 0.12 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1145.10 0.08 269.34 0.13 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1148.48 0.08 283.87 0.14 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1152.28 0.08 296.78 0.14 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1155.66 0.08 311.31 0.15 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1159.46 0.08 325.84 0.16 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1163.27 0.08 340.37 0.17 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1167.07 0.08 354.90 0.17 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1170.87 0.08 369.42 0.18 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1174.67 0.08 383.95 0.19 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1178.48 0.08 398.48 0.19 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1182.28 0.08 414.63 0.20 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1186.50 0.08 430.79 0.21 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1190.73 0.08 446.94 0.22 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1194.96 0.08 463.09 0.22 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1199.18 0.08 479.24 0.23 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0595 17.86 0.00 0.00 0.00 0.00 0.00 17.86 1203.41 0.08 497.01 0.24 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0595 17.86 0.00 0.00 0.00 0.00 0.00 17.86 1208.06 0.08 514.79 0.25 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0595 17.86 0.00 0.00 0.00 0.00 0.00 17.86 1212.71 0.08 532.56 0.26 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0649 19.48 0.00 0.00 0.00 0.00 0.00 19.48 1217.36 0.08 551.96 0.27 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0703 21.10 0.00 0.00 0.00 0.00 0.00 21.10 1222.44 0.08 572.98 0.28 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0879 26.37 0.00 0.00 0.00 0.00 0.00 26.37 1227.94 0.09 599.26 0.29 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0879 26.37 0.00 0.00 0.00 0.00 0.00 26.37 1234.82 0.09 625.55 0.30 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.1420 42.60 0.00 0.00 0.00 0.00 0.00 42.60 1241.70 0.09 668.06 0.32 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.1420 42.60 0.00 0.00 0.00 0.00 0.00 42.60 1252.82 0.09 710.58 0.34 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.1961 58.84 0.00 0.00 0.00 0.00 0.00 58.84 1263.95 0.09 769.33 0.37 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.1961 58.84 0.00 0.00 0.00 0.00 0.00 58.84 1279.32 0.09 828.08 0.40 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.2502 75.07 0.00 0.00 0.00 0.00 0.00 75.07 1294.70 0.09 903.06 0.44 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.3044 91.31 0.00 0.00 0.00 0.00 0.00 91.31 1314.32 0.09 994.28 0.48 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.3585 107.54 0.00 0.00 0.00 0.00 0.00 107.54 1338.19 0.09 1101.73 0.53 0.00 0.00 615

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24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1078.00 0.22 4.10 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1079.07 0.22 10.37 0.01 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1080.71 0.23 16.63 0.01 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1082.35 0.23 25.06 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1084.56 0.23 31.32 0.02 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1086.20 0.23 37.58 0.02 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1087.84 0.23 43.85 0.02 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1089.47 0.23 52.27 0.03 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1091.68 0.23 60.70 0.03 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1093.88 0.23 69.12 0.03 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1096.09 0.23 79.71 0.04 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1098.86 0.23 90.30 0.04 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1101.63 0.23 100.88 0.05 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1104.40 0.23 111.47 0.05 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1107.17 0.23 122.05 0.06 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0144 12.98 0.00 0.00 0.00 0.00 0.00 12.98 1109.94 0.23 134.80 0.07 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0144 12.98 0.00 0.00 0.00 0.00 0.00 12.98 1113.28 0.23 147.55 0.07 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0168 15.14 0.00 0.00 0.00 0.00 0.00 15.14 1116.61 0.23 162.46 0.08 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0168 15.14 0.00 0.00 0.00 0.00 0.00 15.14 1120.51 0.23 177.36 0.09 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0192 17.30 0.00 0.00 0.00 0.00 0.00 17.30 1124.41 0.23 194.43 0.09 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0144 12.98 0.00 0.00 0.00 0.00 0.00 12.98 1128.88 0.24 207.18 0.10 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0168 15.14 0.00 0.00 0.00 0.00 0.00 15.14 1132.22 0.24 222.08 0.11 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0192 17.30 0.00 0.00 0.00 0.00 0.00 17.30 1136.12 0.24 239.15 0.12 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0192 17.30 0.00 0.00 0.00 0.00 0.00 17.30 1140.58 0.24 256.22 0.12 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0216 19.47 0.00 0.00 0.00 0.00 0.00 19.47 1145.05 0.24 275.45 0.13 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0216 19.47 0.00 0.00 0.00 0.00 0.00 19.47 1150.08 0.24 294.68 0.14 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0240 21.63 0.00 0.00 0.00 0.00 0.00 21.63 1155.11 0.24 316.07 0.15 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0240 21.63 0.00 0.00 0.00 0.00 0.00 21.63 1160.71 0.24 337.46 0.16 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0240 21.63 0.00 0.00 0.00 0.00 0.00 21.63 1166.31 0.24 358.85 0.17 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0264 23.79 0.00 0.00 0.00 0.00 0.00 23.79 1171.91 0.24 382.40 0.19 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0288 25.96 0.00 0.00 0.00 0.00 0.00 25.96 1178.07 0.25 408.11 0.20 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0312 28.12 0.00 0.00 0.00 0.00 0.00 28.12 1184.80 0.25 435.98 0.21 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0361 32.45 0.00 0.00 0.00 0.00 0.00 32.45 1192.09 0.25 468.18 0.23 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0361 32.45 0.00 0.00 0.00 0.00 0.00 32.45 1200.52 0.25 500.38 0.24 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0385 34.61 0.00 0.00 0.00 0.00 0.00 34.61 1208.94 0.25 534.73 0.26 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0409 36.77 0.00 0.00 0.00 0.00 0.00 36.77 1217.93 0.25 571.25 0.28 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0457 41.10 0.00 0.00 0.00 0.00 0.00 41.10 1227.49 0.26 612.10 0.30 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0481 43.26 0.00 0.00 0.00 0.00 0.00 43.26 1238.18 0.26 655.10 0.32 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0505 45.43 0.00 0.00 0.00 0.00 0.00 45.43 1249.43 0.26 700.27 0.34 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0529 47.59 0.00 0.00 0.00 0.00 0.00 47.59 1261.25 0.26 747.59 0.36 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0361 32.45 0.00 0.00 0.00 0.00 0.00 32.45 1273.63 0.27 779.77 0.38 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0361 32.45 0.00 0.00 0.00 0.00 0.00 32.45 1282.06 0.27 811.95 0.39 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0481 43.26 0.00 0.00 0.00 0.00 0.00 43.26 1290.48 0.27 854.95 0.42 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0481 43.26 0.00 0.00 0.00 0.00 0.00 43.26 1301.73 0.27 897.94 0.44 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0457 41.10 0.00 0.00 0.00 0.00 0.00 41.10 1312.98 0.27 938.76 0.46 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0457 41.10 0.00 0.00 0.00 0.00 0.00 41.10 1323.66 0.28 979.59 0.48 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0409 36.77 0.00 0.00 0.00 0.00 0.00 36.77 1334.34 0.28 1016.08 0.49 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0433 38.94 0.00 0.00 0.00 0.00 0.00 38.94 1343.89 0.28 1054.74 0.51 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0601 54.08 0.00 0.00 0.00 0.00 0.00 54.08 1354.01 0.28 1108.53 0.54 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0625 56.24 0.00 0.00 0.00 0.00 0.00 56.24 1368.09 0.29 1164.49 0.57 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0740 66.64 0.00 0.00 0.00 0.00 0.00 66.64 1382.73 0.29 1230.84 0.60 0.00 0.00 617

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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=1.09ac+0.09ac typ street frontage=1.18ac 5/7/2024 LOT 5
Drainage Area (ac.)1.1800 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 AND 0.09AC TYPICAL STREET FRONTAGE Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =3234 s.f.Bot. =1078 s.f.Max. Depth (d)=4 Max. storage=8238.87 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.6035 181.04 0.00 0.00 0.00 0.00 0.00 181.04 1078.00 0.07 180.97 0.09 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.9820 294.60 0.00 0.00 0.00 0.00 0.00 294.60 1125.36 0.08 475.49 0.23 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 1.0852 325.57 0.00 0.00 0.00 0.00 0.00 325.57 1202.43 0.08 800.97 0.39 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 1.0164 304.92 0.00 0.00 0.00 0.00 0.00 304.92 1287.60 0.09 1105.80 0.54 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 1.6014 480.41 0.00 0.00 0.00 0.00 0.00 480.41 1367.37 0.09 1586.11 0.77 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 1.8422 552.67 0.00 0.00 0.00 0.00 0.00 552.67 1493.06 0.10 2138.68 1.04 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 2.2207 666.22 0.00 0.00 0.00 0.00 0.00 666.22 1637.66 0.11 2804.79 1.36 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 2.4272 728.16 0.00 0.00 0.00 0.00 0.00 728.16 1811.98 0.13 3532.83 1.72 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 3.5627 1068.82 0.00 0.00 0.00 0.00 0.00 1068.82 2002.49 0.14 4601.51 2.23 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 5.3865 1615.94 0.00 0.00 0.00 0.00 0.00 1615.94 2282.15 0.16 6217.29 3.02 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 4.8703 1461.09 0.00 0.00 0.00 0.00 0.00 1461.09 2704.98 0.19 7678.20 3.73 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.7755 232.66 0.00 0.00 0.00 0.00 0.00 232.66 3087.28 0.21 7910.64 3.84 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3148.11 0.22 7910.43 3.84 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3148.05 0.22 7910.21 3.84 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3147.99 0.22 7909.99 3.84 0.00 0.00 Total volume (cf)7912.11 Total Overflow (cf)0.00
619
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2 of 6
3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0575 17.26 0.00 0.00 0.00 0.00 0.00 17.26 1078.00 0.07 17.19 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0575 17.26 0.00 0.00 0.00 0.00 0.00 17.26 1082.50 0.08 34.37 0.02 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1087.00 0.08 48.91 0.02 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0664 19.92 0.00 0.00 0.00 0.00 0.00 19.92 1090.80 0.08 68.75 0.03 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0664 19.92 0.00 0.00 0.00 0.00 0.00 19.92 1095.99 0.08 88.59 0.04 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 1101.18 0.08 126.62 0.06 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0664 19.92 0.00 0.00 0.00 0.00 0.00 19.92 1111.13 0.08 146.46 0.07 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 1116.33 0.08 184.49 0.09 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 1126.28 0.08 222.52 0.11 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0664 19.92 0.00 0.00 0.00 0.00 0.00 19.92 1136.23 0.08 242.36 0.12 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0708 21.25 0.00 0.00 0.00 0.00 0.00 21.25 1141.42 0.08 263.52 0.13 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 1146.96 0.08 301.55 0.15 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.3041 91.22 0.00 0.00 0.00 0.00 0.00 91.22 1156.91 0.08 392.69 0.19 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.3041 91.22 0.00 0.00 0.00 0.00 0.00 91.22 1180.76 0.08 483.83 0.23 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.3041 91.22 0.00 0.00 0.00 0.00 0.00 91.22 1204.61 0.08 574.97 0.28 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.2155 64.66 0.00 0.00 0.00 0.00 0.00 64.66 1228.46 0.09 639.54 0.31 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.4811 144.33 0.00 0.00 0.00 0.00 0.00 144.33 1245.36 0.09 783.79 0.38 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.5254 157.61 0.00 0.00 0.00 0.00 0.00 157.61 1283.11 0.09 941.32 0.46 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.3926 117.78 0.00 0.00 0.00 0.00 0.00 117.78 1324.33 0.09 1059.00 0.51 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.5254 157.61 0.00 0.00 0.00 0.00 0.00 157.61 1355.13 0.09 1216.52 0.59 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.7909 237.28 0.00 0.00 0.00 0.00 0.00 237.28 1396.35 0.10 1453.71 0.71 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.7024 210.73 0.00 0.00 0.00 0.00 0.00 210.73 1458.42 0.10 1664.34 0.81 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.6139 184.17 0.00 0.00 0.00 0.00 0.00 184.17 1513.53 0.11 1848.40 0.90 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.6582 197.45 0.00 0.00 0.00 0.00 0.00 197.45 1561.70 0.11 2045.74 0.99 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.7024 210.73 0.00 0.00 0.00 0.00 0.00 210.73 1613.34 0.11 2256.36 1.10 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 1.1893 356.79 0.00 0.00 0.00 0.00 0.00 356.79 1668.46 0.12 2613.03 1.27 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 1.5434 463.02 0.00 0.00 0.00 0.00 0.00 463.02 1761.80 0.12 3075.93 1.49 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.8795 263.84 0.00 0.00 0.00 0.00 0.00 263.84 1882.93 0.13 3339.64 1.62 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 2.3401 702.03 0.00 0.00 0.00 0.00 0.00 702.03 1951.94 0.14 4041.54 1.96 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 2.5614 768.43 0.00 0.00 0.00 0.00 0.00 768.43 2135.62 0.15 4809.82 2.34 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 2.9598 887.93 0.00 0.00 0.00 0.00 0.00 887.93 2336.66 0.16 5697.59 2.77 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 1.9418 582.53 0.00 0.00 0.00 0.00 0.00 582.53 2568.98 0.18 6279.94 3.05 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.2155 64.66 0.00 0.00 0.00 0.00 0.00 64.66 2721.37 0.19 6344.41 3.08 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 2738.25 0.19 6382.33 3.10 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.1270 38.11 0.00 0.00 0.00 0.00 0.00 38.11 2748.17 0.19 6420.24 3.12 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0266 7.97 0.00 0.00 0.00 0.00 0.00 7.97 2758.09 0.19 6428.02 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2760.13 0.19 6427.83 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2760.08 0.19 6427.64 3.12 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2760.02 0.19 6427.44 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.97 0.19 6427.25 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.92 0.19 6427.06 3.12 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.87 0.19 6426.87 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.82 0.19 6426.68 3.12 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2759.77 0.19 6426.49 3.12 0.00 0.00 Total volume (cf)6431.91 Total Overflow (cf)0.00
620

3 of 6
6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0271 8.12 0.00 0.00 0.00 0.00 0.00 8.12 1078.00 0.07 8.04 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0325 9.74 0.00 0.00 0.00 0.00 0.00 9.74 1080.10 0.08 17.71 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0325 9.74 0.00 0.00 0.00 0.00 0.00 9.74 1082.63 0.08 27.37 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0325 9.74 0.00 0.00 0.00 0.00 0.00 9.74 1085.16 0.08 37.04 0.02 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0325 9.74 0.00 0.00 0.00 0.00 0.00 9.74 1087.69 0.08 46.70 0.02 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1090.22 0.08 57.99 0.03 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1093.18 0.08 69.28 0.03 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1096.13 0.08 80.57 0.04 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1099.08 0.08 91.85 0.04 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1102.04 0.08 103.14 0.05 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0379 11.36 0.00 0.00 0.00 0.00 0.00 11.36 1104.99 0.08 114.43 0.06 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1107.94 0.08 127.34 0.06 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1111.32 0.08 140.25 0.07 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1114.70 0.08 153.16 0.07 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1118.08 0.08 166.07 0.08 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1121.46 0.08 178.98 0.09 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1124.84 0.08 191.89 0.09 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1128.21 0.08 204.80 0.10 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1131.59 0.08 217.70 0.11 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1134.97 0.08 230.61 0.11 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1138.35 0.08 243.52 0.12 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1141.73 0.08 256.43 0.12 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1145.10 0.08 269.34 0.13 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1148.48 0.08 283.87 0.14 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0433 12.99 0.00 0.00 0.00 0.00 0.00 12.99 1152.28 0.08 296.78 0.14 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1155.66 0.08 311.31 0.15 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1159.46 0.08 325.84 0.16 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1163.27 0.08 340.37 0.17 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1167.07 0.08 354.90 0.17 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1170.87 0.08 369.42 0.18 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1174.67 0.08 383.95 0.19 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0487 14.61 0.00 0.00 0.00 0.00 0.00 14.61 1178.48 0.08 398.48 0.19 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1182.28 0.08 414.63 0.20 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1186.50 0.08 430.79 0.21 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1190.73 0.08 446.94 0.22 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1194.96 0.08 463.09 0.22 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0541 16.23 0.00 0.00 0.00 0.00 0.00 16.23 1199.18 0.08 479.24 0.23 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0595 17.86 0.00 0.00 0.00 0.00 0.00 17.86 1203.41 0.08 497.01 0.24 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0595 17.86 0.00 0.00 0.00 0.00 0.00 17.86 1208.06 0.08 514.79 0.25 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0595 17.86 0.00 0.00 0.00 0.00 0.00 17.86 1212.71 0.08 532.56 0.26 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0649 19.48 0.00 0.00 0.00 0.00 0.00 19.48 1217.36 0.08 551.96 0.27 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0703 21.10 0.00 0.00 0.00 0.00 0.00 21.10 1222.44 0.08 572.98 0.28 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0879 26.37 0.00 0.00 0.00 0.00 0.00 26.37 1227.94 0.09 599.26 0.29 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0879 26.37 0.00 0.00 0.00 0.00 0.00 26.37 1234.82 0.09 625.55 0.30 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.1420 42.60 0.00 0.00 0.00 0.00 0.00 42.60 1241.70 0.09 668.06 0.32 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.1420 42.60 0.00 0.00 0.00 0.00 0.00 42.60 1252.82 0.09 710.58 0.34 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.1961 58.84 0.00 0.00 0.00 0.00 0.00 58.84 1263.95 0.09 769.33 0.37 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.1961 58.84 0.00 0.00 0.00 0.00 0.00 58.84 1279.32 0.09 828.08 0.40 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.2502 75.07 0.00 0.00 0.00 0.00 0.00 75.07 1294.70 0.09 903.06 0.44 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.3044 91.31 0.00 0.00 0.00 0.00 0.00 91.31 1314.32 0.09 994.28 0.48 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.3585 107.54 0.00 0.00 0.00 0.00 0.00 107.54 1338.19 0.09 1101.73 0.53 0.00 0.00 621

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24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0048 4.33 0.00 0.00 0.00 0.00 0.00 4.33 1078.00 0.22 4.10 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1079.07 0.22 10.37 0.01 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1080.71 0.23 16.63 0.01 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1082.35 0.23 25.06 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1084.56 0.23 31.32 0.02 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1086.20 0.23 37.58 0.02 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0072 6.49 0.00 0.00 0.00 0.00 0.00 6.49 1087.84 0.23 43.85 0.02 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1089.47 0.23 52.27 0.03 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1091.68 0.23 60.70 0.03 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0096 8.65 0.00 0.00 0.00 0.00 0.00 8.65 1093.88 0.23 69.12 0.03 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1096.09 0.23 79.71 0.04 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1098.86 0.23 90.30 0.04 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1101.63 0.23 100.88 0.05 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1104.40 0.23 111.47 0.05 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0120 10.82 0.00 0.00 0.00 0.00 0.00 10.82 1107.17 0.23 122.05 0.06 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0144 12.98 0.00 0.00 0.00 0.00 0.00 12.98 1109.94 0.23 134.80 0.07 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0144 12.98 0.00 0.00 0.00 0.00 0.00 12.98 1113.28 0.23 147.55 0.07 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0168 15.14 0.00 0.00 0.00 0.00 0.00 15.14 1116.61 0.23 162.46 0.08 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0168 15.14 0.00 0.00 0.00 0.00 0.00 15.14 1120.51 0.23 177.36 0.09 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0192 17.30 0.00 0.00 0.00 0.00 0.00 17.30 1124.41 0.23 194.43 0.09 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0144 12.98 0.00 0.00 0.00 0.00 0.00 12.98 1128.88 0.24 207.18 0.10 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0168 15.14 0.00 0.00 0.00 0.00 0.00 15.14 1132.22 0.24 222.08 0.11 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0192 17.30 0.00 0.00 0.00 0.00 0.00 17.30 1136.12 0.24 239.15 0.12 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0192 17.30 0.00 0.00 0.00 0.00 0.00 17.30 1140.58 0.24 256.22 0.12 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0216 19.47 0.00 0.00 0.00 0.00 0.00 19.47 1145.05 0.24 275.45 0.13 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0216 19.47 0.00 0.00 0.00 0.00 0.00 19.47 1150.08 0.24 294.68 0.14 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0240 21.63 0.00 0.00 0.00 0.00 0.00 21.63 1155.11 0.24 316.07 0.15 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0240 21.63 0.00 0.00 0.00 0.00 0.00 21.63 1160.71 0.24 337.46 0.16 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0240 21.63 0.00 0.00 0.00 0.00 0.00 21.63 1166.31 0.24 358.85 0.17 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0264 23.79 0.00 0.00 0.00 0.00 0.00 23.79 1171.91 0.24 382.40 0.19 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0288 25.96 0.00 0.00 0.00 0.00 0.00 25.96 1178.07 0.25 408.11 0.20 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0312 28.12 0.00 0.00 0.00 0.00 0.00 28.12 1184.80 0.25 435.98 0.21 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0361 32.45 0.00 0.00 0.00 0.00 0.00 32.45 1192.09 0.25 468.18 0.23 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0361 32.45 0.00 0.00 0.00 0.00 0.00 32.45 1200.52 0.25 500.38 0.24 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0385 34.61 0.00 0.00 0.00 0.00 0.00 34.61 1208.94 0.25 534.73 0.26 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0409 36.77 0.00 0.00 0.00 0.00 0.00 36.77 1217.93 0.25 571.25 0.28 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0457 41.10 0.00 0.00 0.00 0.00 0.00 41.10 1227.49 0.26 612.10 0.30 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0481 43.26 0.00 0.00 0.00 0.00 0.00 43.26 1238.18 0.26 655.10 0.32 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0505 45.43 0.00 0.00 0.00 0.00 0.00 45.43 1249.43 0.26 700.27 0.34 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0529 47.59 0.00 0.00 0.00 0.00 0.00 47.59 1261.25 0.26 747.59 0.36 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0361 32.45 0.00 0.00 0.00 0.00 0.00 32.45 1273.63 0.27 779.77 0.38 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0361 32.45 0.00 0.00 0.00 0.00 0.00 32.45 1282.06 0.27 811.95 0.39 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0481 43.26 0.00 0.00 0.00 0.00 0.00 43.26 1290.48 0.27 854.95 0.42 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0481 43.26 0.00 0.00 0.00 0.00 0.00 43.26 1301.73 0.27 897.94 0.44 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0457 41.10 0.00 0.00 0.00 0.00 0.00 41.10 1312.98 0.27 938.76 0.46 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0457 41.10 0.00 0.00 0.00 0.00 0.00 41.10 1323.66 0.28 979.59 0.48 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0409 36.77 0.00 0.00 0.00 0.00 0.00 36.77 1334.34 0.28 1016.08 0.49 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0433 38.94 0.00 0.00 0.00 0.00 0.00 38.94 1343.89 0.28 1054.74 0.51 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0601 54.08 0.00 0.00 0.00 0.00 0.00 54.08 1354.01 0.28 1108.53 0.54 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0625 56.24 0.00 0.00 0.00 0.00 0.00 56.24 1368.09 0.29 1164.49 0.57 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0740 66.64 0.00 0.00 0.00 0.00 0.00 66.64 1382.73 0.29 1230.84 0.60 0.00 0.00 623

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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=1.16ac+0.09ac typ street frontage=1.25ac 5/7/2024 LOT 6
Drainage Area (ac.)1.2500 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 AND 0.09AC TYPICAL STREET FRONTAGE Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =3304 s.f.Bot. =1123 s.f.Max. Depth (d)=4 Max. storage=8470.98 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.6393 191.78 0.00 0.00 0.00 0.00 0.00 191.78 1123.00 0.08 191.71 0.09 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 1.0402 312.07 0.00 0.00 0.00 0.00 0.00 312.07 1172.36 0.08 503.70 0.24 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 1.1496 344.88 0.00 0.00 0.00 0.00 0.00 344.88 1252.69 0.09 848.49 0.40 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 1.0767 323.01 0.00 0.00 0.00 0.00 0.00 323.01 1341.46 0.09 1171.40 0.55 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 1.6964 508.91 0.00 0.00 0.00 0.00 0.00 508.91 1424.60 0.10 1680.21 0.79 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 1.9515 585.46 0.00 0.00 0.00 0.00 0.00 585.46 1555.60 0.11 2265.56 1.07 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 2.3525 705.75 0.00 0.00 0.00 0.00 0.00 705.75 1706.31 0.12 2971.19 1.40 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 2.5712 771.36 0.00 0.00 0.00 0.00 0.00 771.36 1887.98 0.13 3742.42 1.77 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 3.7741 1132.23 0.00 0.00 0.00 0.00 0.00 1132.23 2086.55 0.14 4874.50 2.30 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 5.7060 1711.80 0.00 0.00 0.00 0.00 0.00 1711.80 2378.02 0.17 6586.13 3.11 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 5.1592 1547.77 0.00 0.00 0.00 0.00 0.00 1547.77 2818.71 0.20 8133.71 3.84 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.8215 246.46 0.00 0.00 0.00 0.00 0.00 246.46 3217.16 0.22 8379.95 3.96 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3280.56 0.23 8379.72 3.96 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3280.50 0.23 8379.49 3.96 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3280.44 0.23 8379.26 3.96 0.00 0.00 Total volume (cf)8381.47 Total Overflow (cf)0.00
625
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0610 18.29 0.00 0.00 0.00 0.00 0.00 18.29 1123.00 0.08 18.21 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0610 18.29 0.00 0.00 0.00 0.00 0.00 18.29 1127.69 0.08 36.42 0.02 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0516 15.47 0.00 0.00 0.00 0.00 0.00 15.47 1132.38 0.08 51.81 0.02 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0703 21.10 0.00 0.00 0.00 0.00 0.00 21.10 1136.34 0.08 72.83 0.03 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0703 21.10 0.00 0.00 0.00 0.00 0.00 21.10 1141.75 0.08 93.85 0.04 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.1346 40.37 0.00 0.00 0.00 0.00 0.00 40.37 1147.16 0.08 134.14 0.06 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0703 21.10 0.00 0.00 0.00 0.00 0.00 21.10 1157.54 0.08 155.16 0.07 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.1346 40.37 0.00 0.00 0.00 0.00 0.00 40.37 1162.95 0.08 195.44 0.09 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.1346 40.37 0.00 0.00 0.00 0.00 0.00 40.37 1173.32 0.08 235.73 0.11 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0703 21.10 0.00 0.00 0.00 0.00 0.00 21.10 1183.69 0.08 256.75 0.12 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0750 22.51 0.00 0.00 0.00 0.00 0.00 22.51 1189.10 0.08 279.17 0.13 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.1346 40.37 0.00 0.00 0.00 0.00 0.00 40.37 1194.88 0.08 319.45 0.15 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.3221 96.63 0.00 0.00 0.00 0.00 0.00 96.63 1205.25 0.08 416.00 0.20 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.3221 96.63 0.00 0.00 0.00 0.00 0.00 96.63 1230.11 0.09 512.55 0.24 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.3221 96.63 0.00 0.00 0.00 0.00 0.00 96.63 1254.96 0.09 609.09 0.29 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.2283 68.50 0.00 0.00 0.00 0.00 0.00 68.50 1279.82 0.09 677.50 0.32 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.5097 152.90 0.00 0.00 0.00 0.00 0.00 152.90 1297.44 0.09 830.31 0.39 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.5565 166.96 0.00 0.00 0.00 0.00 0.00 166.96 1336.78 0.09 997.18 0.47 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.4159 124.76 0.00 0.00 0.00 0.00 0.00 124.76 1379.74 0.10 1121.85 0.53 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.5565 166.96 0.00 0.00 0.00 0.00 0.00 166.96 1411.84 0.10 1288.72 0.61 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.8379 251.36 0.00 0.00 0.00 0.00 0.00 251.36 1454.80 0.10 1539.98 0.73 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.7441 223.23 0.00 0.00 0.00 0.00 0.00 223.23 1519.49 0.11 1763.10 0.83 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.6503 195.10 0.00 0.00 0.00 0.00 0.00 195.10 1576.94 0.11 1958.09 0.92 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.6972 209.16 0.00 0.00 0.00 0.00 0.00 209.16 1627.14 0.11 2167.13 1.02 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.7441 223.23 0.00 0.00 0.00 0.00 0.00 223.23 1680.97 0.12 2390.25 1.13 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 1.2599 377.96 0.00 0.00 0.00 0.00 0.00 377.96 1738.41 0.12 2768.08 1.31 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 1.6350 490.49 0.00 0.00 0.00 0.00 0.00 490.49 1835.69 0.13 3258.44 1.54 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.9316 279.49 0.00 0.00 0.00 0.00 0.00 279.49 1961.94 0.14 3537.80 1.67 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 2.4789 743.68 0.00 0.00 0.00 0.00 0.00 743.68 2033.87 0.14 4281.34 2.02 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 2.7134 814.01 0.00 0.00 0.00 0.00 0.00 814.01 2225.30 0.15 5095.19 2.41 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 3.1354 940.61 0.00 0.00 0.00 0.00 0.00 940.61 2434.85 0.17 6035.63 2.85 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 2.0569 617.08 0.00 0.00 0.00 0.00 0.00 617.08 2676.98 0.19 6652.53 3.14 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.2283 68.50 0.00 0.00 0.00 0.00 0.00 68.50 2835.81 0.20 6720.83 3.17 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.1346 40.37 0.00 0.00 0.00 0.00 0.00 40.37 2853.39 0.20 6761.00 3.19 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.1346 40.37 0.00 0.00 0.00 0.00 0.00 40.37 2863.74 0.20 6801.17 3.21 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0281 8.44 0.00 0.00 0.00 0.00 0.00 8.44 2874.08 0.20 6809.41 3.22 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2876.20 0.20 6809.21 3.22 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2876.15 0.20 6809.01 3.22 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2876.10 0.20 6808.81 3.22 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2876.04 0.20 6808.61 3.22 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2875.99 0.20 6808.41 3.21 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2875.94 0.20 6808.21 3.21 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2875.89 0.20 6808.01 3.21 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2875.84 0.20 6807.81 3.21 0.00 0.00 Total volume (cf)6813.47 Total Overflow (cf)0.00
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6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0287 8.60 0.00 0.00 0.00 0.00 0.00 8.60 1123.00 0.08 8.52 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0344 10.32 0.00 0.00 0.00 0.00 0.00 10.32 1125.19 0.08 18.76 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0344 10.32 0.00 0.00 0.00 0.00 0.00 10.32 1127.83 0.08 29.00 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0344 10.32 0.00 0.00 0.00 0.00 0.00 10.32 1130.47 0.08 39.24 0.02 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0344 10.32 0.00 0.00 0.00 0.00 0.00 10.32 1133.10 0.08 49.48 0.02 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0401 12.04 0.00 0.00 0.00 0.00 0.00 12.04 1135.74 0.08 61.44 0.03 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0401 12.04 0.00 0.00 0.00 0.00 0.00 12.04 1138.82 0.08 73.40 0.03 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0401 12.04 0.00 0.00 0.00 0.00 0.00 12.04 1141.90 0.08 85.36 0.04 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0401 12.04 0.00 0.00 0.00 0.00 0.00 12.04 1144.98 0.08 97.32 0.05 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0401 12.04 0.00 0.00 0.00 0.00 0.00 12.04 1148.06 0.08 109.27 0.05 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0401 12.04 0.00 0.00 0.00 0.00 0.00 12.04 1151.13 0.08 121.23 0.06 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1154.21 0.08 134.91 0.06 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1157.73 0.08 148.59 0.07 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1161.26 0.08 162.26 0.08 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1164.78 0.08 175.94 0.08 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1168.30 0.08 189.62 0.09 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1171.82 0.08 203.29 0.10 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1175.34 0.08 216.97 0.10 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1178.86 0.08 230.65 0.11 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1182.38 0.08 244.32 0.12 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1185.90 0.08 258.00 0.12 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1189.43 0.08 271.67 0.13 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1192.95 0.08 285.35 0.13 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1196.47 0.08 300.74 0.14 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1200.43 0.08 314.41 0.15 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1203.95 0.08 329.81 0.16 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1207.91 0.08 345.20 0.16 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1211.88 0.08 360.60 0.17 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1215.84 0.08 375.99 0.18 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1219.80 0.08 391.38 0.18 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1223.77 0.08 406.77 0.19 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1227.73 0.09 422.17 0.20 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0573 17.20 0.00 0.00 0.00 0.00 0.00 17.20 1231.69 0.09 439.28 0.21 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0573 17.20 0.00 0.00 0.00 0.00 0.00 17.20 1236.10 0.09 456.39 0.22 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0573 17.20 0.00 0.00 0.00 0.00 0.00 17.20 1240.50 0.09 473.50 0.22 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0573 17.20 0.00 0.00 0.00 0.00 0.00 17.20 1244.91 0.09 490.61 0.23 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0573 17.20 0.00 0.00 0.00 0.00 0.00 17.20 1249.32 0.09 507.72 0.24 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0631 18.92 0.00 0.00 0.00 0.00 0.00 18.92 1253.72 0.09 526.55 0.25 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0631 18.92 0.00 0.00 0.00 0.00 0.00 18.92 1258.57 0.09 545.38 0.26 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0631 18.92 0.00 0.00 0.00 0.00 0.00 18.92 1263.42 0.09 564.21 0.27 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0688 20.64 0.00 0.00 0.00 0.00 0.00 20.64 1268.27 0.09 584.76 0.28 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0745 22.36 0.00 0.00 0.00 0.00 0.00 22.36 1273.56 0.09 607.02 0.29 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0931 27.93 0.00 0.00 0.00 0.00 0.00 27.93 1279.29 0.09 634.87 0.30 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0931 27.93 0.00 0.00 0.00 0.00 0.00 27.93 1286.46 0.09 662.72 0.31 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.1504 45.13 0.00 0.00 0.00 0.00 0.00 45.13 1293.63 0.09 707.76 0.33 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.1504 45.13 0.00 0.00 0.00 0.00 0.00 45.13 1305.22 0.09 752.80 0.36 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.2078 62.33 0.00 0.00 0.00 0.00 0.00 62.33 1316.82 0.09 815.04 0.38 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.2078 62.33 0.00 0.00 0.00 0.00 0.00 62.33 1332.84 0.09 877.27 0.41 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.2651 79.53 0.00 0.00 0.00 0.00 0.00 79.53 1348.87 0.09 956.70 0.45 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.3224 96.72 0.00 0.00 0.00 0.00 0.00 96.72 1369.32 0.10 1053.33 0.50 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.3797 113.92 0.00 0.00 0.00 0.00 0.00 113.92 1394.20 0.10 1167.15 0.55 0.00 0.00 627

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4:20 2 0.91 0.56 N/A 0.3468 0.4371 131.12 0.00 0.00 0.00 0.00 0.00 131.12 1423.50 0.10 1298.17 0.61 0.00 0.00 4:25 2.1 0.96 0.56 N/A 0.3922 0.4944 148.31 0.00 0.00 0.00 0.00 0.00 148.31 1457.24 0.10 1446.39 0.68 0.00 0.00 4:30 2.1 0.96 0.56 N/A 0.3922 0.4944 148.31 0.00 0.00 0.00 0.00 0.00 148.31 1495.40 0.10 1594.60 0.75 0.00 0.00 4:35 2.2 1.00 0.56 N/A 0.4377 0.5517 165.51 0.00 0.00 0.00 0.00 0.00 165.51 1533.56 0.11 1760.00 0.83 0.00 0.00 4:40 2.3 1.05 0.56 N/A 0.4832 0.6090 182.71 0.00 0.00 0.00 0.00 0.00 182.71 1576.14 0.11 1942.60 0.92 0.00 0.00 4:45 2.4 1.09 0.56 N/A 0.5287 0.6664 199.91 0.00 0.00 0.00 0.00 0.00 199.91 1623.16 0.11 2142.39 1.01 0.00 0.00 4:50 2.4 1.09 0.56 N/A 0.5287 0.6664 199.91 0.00 0.00 0.00 0.00 0.00 199.91 1674.60 0.12 2342.18 1.11 0.00 0.00 4:55 2.5 1.14 0.56 N/A 0.5742 0.7237 217.10 0.00 0.00 0.00 0.00 0.00 217.10 1726.03 0.12 2559.16 1.21 0.00 0.00 5:00 2.6 1.18 0.56 N/A 0.6196 0.7810 234.30 0.00 0.00 0.00 0.00 0.00 234.30 1781.90 0.12 2793.34 1.32 0.00 0.00 5:05 3.1 1.41 0.56 N/A 0.8470 1.0676 320.29 0.00 0.00 0.00 0.00 0.00 320.29 1842.19 0.13 3113.50 1.47 0.00 0.00 5:10 3.6 1.64 0.56 N/A 1.0744 1.3542 406.27 0.00 0.00 0.00 0.00 0.00 406.27 1924.62 0.13 3519.64 1.66 0.00 0.00 5:15 3.9 1.77 0.56 N/A 1.2109 1.5262 457.86 0.00 0.00 0.00 0.00 0.00 457.86 2029.19 0.14 3977.36 1.88 0.00 0.00 5:20 4.2 1.91 0.56 N/A 1.3473 1.6982 509.45 0.00 0.00 0.00 0.00 0.00 509.45 2147.04 0.15 4486.66 2.12 0.00 0.00 5:25 4.7 2.14 0.56 N/A 1.5747 1.9848 595.44 0.00 0.00 0.00 0.00 0.00 595.44 2278.17 0.16 5081.94 2.40 0.00 0.00 5:30 5.6 2.55 0.56 N/A 1.9840 2.5007 750.21 0.00 0.00 0.00 0.00 0.00 750.21 2431.43 0.17 5831.99 2.75 0.00 0.00 5:35 1.9 0.86 0.56 N/A 0.3013 0.3797 113.92 0.00 0.00 0.00 0.00 0.00 113.92 2624.55 0.18 5945.73 2.81 0.00 0.00 5:40 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 2653.83 0.18 5961.02 2.81 0.00 0.00 5:45 0.6 0.27 0.56 0.25 0.0273 0.0344 10.32 0.00 0.00 0.00 0.00 0.00 10.32 2657.77 0.18 5971.15 2.82 0.00 0.00 5:50 0.5 0.23 0.56 0.20 0.0227 0.0287 8.60 0.00 0.00 0.00 0.00 0.00 8.60 2660.38 0.18 5979.57 2.82 0.00 0.00 5:55 0.3 0.14 0.56 0.12 0.0136 0.0172 5.16 0.00 0.00 0.00 0.00 0.00 5.16 2662.54 0.18 5984.54 2.83 0.00 0.00 6:00 0.2 0.09 0.56 0.08 0.0091 0.0115 3.44 0.00 0.00 0.00 0.00 0.00 3.44 2663.82 0.18 5987.80 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2664.66 0.19 5987.61 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2664.61 0.19 5987.43 2.83 0.00 0.00 6:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2664.57 0.19 5987.24 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2664.52 0.19 5987.06 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2664.47 0.19 5986.87 2.83 0.00 0.00 6:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2664.42 0.19 5986.69 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2664.37 0.19 5986.50 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2664.33 0.19 5986.32 2.83 0.00 0.00 6:45 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2664.28 0.19 5986.13 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2664.23 0.19 5985.95 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2664.18 0.19 5985.76 2.83 0.00 0.00 7:00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2664.14 0.19 5985.58 2.83 0.00 0.00 Total volume (cf)5995.07 Total Overflow (cf)0.00
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24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1123.00 0.23 4.35 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1124.12 0.23 10.99 0.01 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1125.83 0.23 17.63 0.01 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 1127.54 0.23 26.56 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1129.84 0.24 33.20 0.02 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1131.55 0.24 39.84 0.02 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1133.26 0.24 46.48 0.02 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 1134.97 0.24 55.40 0.03 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 1137.26 0.24 64.33 0.03 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 1139.56 0.24 73.26 0.03 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0127 11.46 0.00 0.00 0.00 0.00 0.00 11.46 1141.86 0.24 84.48 0.04 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0127 11.46 0.00 0.00 0.00 0.00 0.00 11.46 1144.75 0.24 95.70 0.05 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0127 11.46 0.00 0.00 0.00 0.00 0.00 11.46 1147.64 0.24 106.92 0.05 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0127 11.46 0.00 0.00 0.00 0.00 0.00 11.46 1150.53 0.24 118.14 0.06 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0127 11.46 0.00 0.00 0.00 0.00 0.00 11.46 1153.42 0.24 129.35 0.06 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 1156.30 0.24 142.86 0.07 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 1159.78 0.24 156.37 0.07 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0178 16.04 0.00 0.00 0.00 0.00 0.00 16.04 1163.26 0.24 172.16 0.08 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0178 16.04 0.00 0.00 0.00 0.00 0.00 16.04 1167.33 0.24 187.96 0.09 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 1171.39 0.24 206.05 0.10 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 1176.05 0.25 219.55 0.10 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0178 16.04 0.00 0.00 0.00 0.00 0.00 16.04 1179.53 0.25 235.35 0.11 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 1183.59 0.25 253.43 0.12 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 1188.25 0.25 271.52 0.13 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0229 20.62 0.00 0.00 0.00 0.00 0.00 20.62 1192.91 0.25 291.89 0.14 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0229 20.62 0.00 0.00 0.00 0.00 0.00 20.62 1198.15 0.25 312.26 0.15 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0255 22.91 0.00 0.00 0.00 0.00 0.00 22.91 1203.40 0.25 334.93 0.16 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0255 22.91 0.00 0.00 0.00 0.00 0.00 22.91 1209.23 0.25 357.59 0.17 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0255 22.91 0.00 0.00 0.00 0.00 0.00 22.91 1215.07 0.25 380.25 0.18 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0280 25.21 0.00 0.00 0.00 0.00 0.00 25.21 1220.90 0.25 405.20 0.19 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0306 27.50 0.00 0.00 0.00 0.00 0.00 27.50 1227.33 0.26 432.44 0.20 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0331 29.79 0.00 0.00 0.00 0.00 0.00 29.79 1234.34 0.26 461.98 0.22 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0382 34.37 0.00 0.00 0.00 0.00 0.00 34.37 1241.94 0.26 496.09 0.23 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0382 34.37 0.00 0.00 0.00 0.00 0.00 34.37 1250.73 0.26 530.20 0.25 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0407 36.66 0.00 0.00 0.00 0.00 0.00 36.66 1259.51 0.26 566.60 0.27 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0433 38.95 0.00 0.00 0.00 0.00 0.00 38.95 1268.88 0.26 605.29 0.29 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0484 43.54 0.00 0.00 0.00 0.00 0.00 43.54 1278.84 0.27 648.56 0.31 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0509 45.83 0.00 0.00 0.00 0.00 0.00 45.83 1289.98 0.27 694.12 0.33 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0535 48.12 0.00 0.00 0.00 0.00 0.00 48.12 1301.71 0.27 741.97 0.35 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0560 50.41 0.00 0.00 0.00 0.00 0.00 50.41 1314.03 0.27 792.11 0.37 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0382 34.37 0.00 0.00 0.00 0.00 0.00 34.37 1326.94 0.28 826.20 0.39 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0382 34.37 0.00 0.00 0.00 0.00 0.00 34.37 1335.72 0.28 860.30 0.41 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0509 45.83 0.00 0.00 0.00 0.00 0.00 45.83 1344.50 0.28 905.84 0.43 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0509 45.83 0.00 0.00 0.00 0.00 0.00 45.83 1356.23 0.28 951.39 0.45 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0484 43.54 0.00 0.00 0.00 0.00 0.00 43.54 1367.95 0.28 994.64 0.47 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0484 43.54 0.00 0.00 0.00 0.00 0.00 43.54 1379.09 0.29 1037.89 0.49 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0433 38.95 0.00 0.00 0.00 0.00 0.00 38.95 1390.22 0.29 1076.56 0.51 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0458 41.25 0.00 0.00 0.00 0.00 0.00 41.25 1400.18 0.29 1117.51 0.53 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0637 57.29 0.00 0.00 0.00 0.00 0.00 57.29 1410.72 0.29 1174.50 0.55 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0662 59.58 0.00 0.00 0.00 0.00 0.00 59.58 1425.40 0.30 1233.78 0.58 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0784 70.59 0.00 0.00 0.00 0.00 0.00 70.59 1440.66 0.30 1304.08 0.62 0.00 0.00 629

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13:00 2.9 0.59 0.50 N/A 0.0900 0.1135 102.13 0.00 0.00 0.00 0.00 0.00 102.13 1458.76 0.30 1405.90 0.66 0.00 0.00 13:15 3.4 0.69 0.49 N/A 0.1985 0.2502 225.21 0.00 0.00 0.00 0.00 0.00 225.21 1484.97 0.31 1630.80 0.77 0.00 0.00 13:30 3.4 0.69 0.48 N/A 0.2059 0.2596 233.61 0.00 0.00 0.00 0.00 0.00 233.61 1542.88 0.32 1864.09 0.88 0.00 0.00 13:45 2.3 0.46 0.47 0.42 0.0465 0.0586 52.70 0.00 0.00 0.00 0.00 0.00 52.70 1602.94 0.33 1916.46 0.90 0.00 0.00 14:00 2.3 0.46 0.47 0.42 0.0465 0.0586 52.70 0.00 0.00 0.00 0.00 0.00 52.70 1616.43 0.34 1968.83 0.93 0.00 0.00 14:15 2.7 0.55 0.46 N/A 0.0862 0.1086 97.76 0.00 0.00 0.00 0.00 0.00 97.76 1629.91 0.34 2066.25 0.98 0.00 0.00 14:30 2.6 0.53 0.45 N/A 0.0730 0.0920 82.81 0.00 0.00 0.00 0.00 0.00 82.81 1654.99 0.34 2148.71 1.01 0.00 0.00 14:45 2.6 0.53 0.45 N/A 0.0799 0.1007 90.65 0.00 0.00 0.00 0.00 0.00 90.65 1676.22 0.35 2239.02 1.06 0.00 0.00 15:00 2.5 0.51 0.44 N/A 0.0665 0.0839 75.47 0.00 0.00 0.00 0.00 0.00 75.47 1699.47 0.35 2314.13 1.09 0.00 0.00 15:15 2.4 0.48 0.43 N/A 0.0530 0.0668 60.16 0.00 0.00 0.00 0.00 0.00 60.16 1718.81 0.36 2373.93 1.12 0.00 0.00 15:30 2.3 0.46 0.43 0.42 0.0465 0.0586 52.70 0.00 0.00 0.00 0.00 0.00 52.70 1734.21 0.36 2426.28 1.15 0.00 0.00 15:45 1.9 0.38 0.42 0.35 0.0384 0.0484 43.54 0.00 0.00 0.00 0.00 0.00 43.54 1747.69 0.36 2469.45 1.17 0.00 0.00 16:00 1.9 0.38 0.41 0.35 0.0384 0.0484 43.54 0.00 0.00 0.00 0.00 0.00 43.54 1758.80 0.37 2512.62 1.19 0.00 0.00 16:15 0.4 0.08 0.41 0.07 0.0081 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 1769.92 0.37 2521.42 1.19 0.00 0.00 16:30 0.4 0.08 0.40 0.07 0.0081 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 1772.18 0.37 2530.21 1.19 0.00 0.00 16:45 0.3 0.06 0.39 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1774.45 0.37 2536.72 1.20 0.00 0.00 17:00 0.3 0.06 0.39 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1776.12 0.37 2543.22 1.20 0.00 0.00 17:15 0.5 0.10 0.38 0.09 0.0101 0.0127 11.46 0.00 0.00 0.00 0.00 0.00 11.46 1777.80 0.37 2554.31 1.21 0.00 0.00 17:30 0.5 0.10 0.38 0.09 0.0101 0.0127 11.46 0.00 0.00 0.00 0.00 0.00 11.46 1780.65 0.37 2565.40 1.21 0.00 0.00 17:45 0.5 0.10 0.37 0.09 0.0101 0.0127 11.46 0.00 0.00 0.00 0.00 0.00 11.46 1783.51 0.37 2576.48 1.22 0.00 0.00 18:00 0.4 0.08 0.37 0.07 0.0081 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 1786.36 0.37 2585.28 1.22 0.00 0.00 18:15 0.4 0.08 0.36 0.07 0.0081 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 1788.62 0.37 2594.07 1.22 0.00 0.00 18:30 0.4 0.08 0.35 0.07 0.0081 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 1790.89 0.37 2602.86 1.23 0.00 0.00 18:45 0.3 0.06 0.35 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1793.15 0.37 2609.36 1.23 0.00 0.00 19:00 0.2 0.04 0.34 0.04 0.0040 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1794.82 0.37 2613.57 1.23 0.00 0.00 19:15 0.3 0.06 0.34 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1795.91 0.37 2620.07 1.24 0.00 0.00 19:30 0.4 0.08 0.34 0.07 0.0081 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 1797.58 0.37 2628.86 1.24 0.00 0.00 19:45 0.3 0.06 0.33 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1799.85 0.37 2635.36 1.24 0.00 0.00 20:00 0.2 0.04 0.33 0.04 0.0040 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1801.52 0.38 2639.57 1.25 0.00 0.00 20:15 0.3 0.06 0.32 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1802.60 0.38 2646.07 1.25 0.00 0.00 20:30 0.3 0.06 0.32 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1804.28 0.38 2652.57 1.25 0.00 0.00 20:45 0.3 0.06 0.31 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1805.95 0.38 2659.06 1.26 0.00 0.00 21:00 0.2 0.04 0.31 0.04 0.0040 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1807.62 0.38 2663.27 1.26 0.00 0.00 21:15 0.3 0.06 0.31 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1808.70 0.38 2669.77 1.26 0.00 0.00 21:30 0.2 0.04 0.30 0.04 0.0040 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1810.38 0.38 2673.97 1.26 0.00 0.00 21:45 0.3 0.06 0.30 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1811.46 0.38 2680.47 1.27 0.00 0.00 22:00 0.2 0.04 0.30 0.04 0.0040 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1813.13 0.38 2684.68 1.27 0.00 0.00 22:15 0.3 0.06 0.29 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1814.22 0.38 2691.17 1.27 0.00 0.00 22:30 0.2 0.04 0.29 0.04 0.0040 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1815.89 0.38 2695.38 1.27 0.00 0.00 22:45 0.2 0.04 0.29 0.04 0.0040 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1816.97 0.38 2699.58 1.27 0.00 0.00 23:00 0.2 0.04 0.29 0.04 0.0040 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1818.05 0.38 2703.79 1.28 0.00 0.00 23:15 0.2 0.04 0.28 0.04 0.0040 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1819.14 0.38 2707.99 1.28 0.00 0.00 23:30 0.2 0.04 0.28 0.04 0.0040 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1820.22 0.38 2712.19 1.28 0.00 0.00 23:45 0.2 0.04 0.28 0.04 0.0040 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1821.30 0.38 2716.40 1.28 0.00 0.00 24:00 0.2 0.04 0.28 0.04 0.0040 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1822.38 0.38 2720.60 1.28 0.00 0.00 0 0.00 0.28 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1823.46 0.38 2720.22 1.28 0.00 0.00 Total volume (cf)2750.10 Total Overflow (cf)0.00
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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=1.16ac+0.09ac typ street frontage=1.25ac 5/7/2024 LOT 7
Drainage Area (ac.)1.2500 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 AND 0.09AC TYPICAL STREET FRONTAGE Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =3304 s.f.Bot. =1123 s.f.Max. Depth (d)=4 Max. storage=8470.98 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.6393 191.78 0.00 0.00 0.00 0.00 0.00 191.78 1123.00 0.08 191.71 0.09 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 1.0402 312.07 0.00 0.00 0.00 0.00 0.00 312.07 1172.36 0.08 503.70 0.24 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 1.1496 344.88 0.00 0.00 0.00 0.00 0.00 344.88 1252.69 0.09 848.49 0.40 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 1.0767 323.01 0.00 0.00 0.00 0.00 0.00 323.01 1341.46 0.09 1171.40 0.55 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 1.6964 508.91 0.00 0.00 0.00 0.00 0.00 508.91 1424.60 0.10 1680.21 0.79 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 1.9515 585.46 0.00 0.00 0.00 0.00 0.00 585.46 1555.60 0.11 2265.56 1.07 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 2.3525 705.75 0.00 0.00 0.00 0.00 0.00 705.75 1706.31 0.12 2971.19 1.40 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 2.5712 771.36 0.00 0.00 0.00 0.00 0.00 771.36 1887.98 0.13 3742.42 1.77 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 3.7741 1132.23 0.00 0.00 0.00 0.00 0.00 1132.23 2086.55 0.14 4874.50 2.30 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 5.7060 1711.80 0.00 0.00 0.00 0.00 0.00 1711.80 2378.02 0.17 6586.13 3.11 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 5.1592 1547.77 0.00 0.00 0.00 0.00 0.00 1547.77 2818.71 0.20 8133.71 3.84 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.8215 246.46 0.00 0.00 0.00 0.00 0.00 246.46 3217.16 0.22 8379.95 3.96 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3280.56 0.23 8379.72 3.96 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3280.50 0.23 8379.49 3.96 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3280.44 0.23 8379.26 3.96 0.00 0.00 Total volume (cf)8381.47 Total Overflow (cf)0.00
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0610 18.29 0.00 0.00 0.00 0.00 0.00 18.29 1123.00 0.08 18.21 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0610 18.29 0.00 0.00 0.00 0.00 0.00 18.29 1127.69 0.08 36.42 0.02 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0516 15.47 0.00 0.00 0.00 0.00 0.00 15.47 1132.38 0.08 51.81 0.02 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0703 21.10 0.00 0.00 0.00 0.00 0.00 21.10 1136.34 0.08 72.83 0.03 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0703 21.10 0.00 0.00 0.00 0.00 0.00 21.10 1141.75 0.08 93.85 0.04 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.1346 40.37 0.00 0.00 0.00 0.00 0.00 40.37 1147.16 0.08 134.14 0.06 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0703 21.10 0.00 0.00 0.00 0.00 0.00 21.10 1157.54 0.08 155.16 0.07 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.1346 40.37 0.00 0.00 0.00 0.00 0.00 40.37 1162.95 0.08 195.44 0.09 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.1346 40.37 0.00 0.00 0.00 0.00 0.00 40.37 1173.32 0.08 235.73 0.11 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0703 21.10 0.00 0.00 0.00 0.00 0.00 21.10 1183.69 0.08 256.75 0.12 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0750 22.51 0.00 0.00 0.00 0.00 0.00 22.51 1189.10 0.08 279.17 0.13 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.1346 40.37 0.00 0.00 0.00 0.00 0.00 40.37 1194.88 0.08 319.45 0.15 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.3221 96.63 0.00 0.00 0.00 0.00 0.00 96.63 1205.25 0.08 416.00 0.20 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.3221 96.63 0.00 0.00 0.00 0.00 0.00 96.63 1230.11 0.09 512.55 0.24 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.3221 96.63 0.00 0.00 0.00 0.00 0.00 96.63 1254.96 0.09 609.09 0.29 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.2283 68.50 0.00 0.00 0.00 0.00 0.00 68.50 1279.82 0.09 677.50 0.32 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.5097 152.90 0.00 0.00 0.00 0.00 0.00 152.90 1297.44 0.09 830.31 0.39 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.5565 166.96 0.00 0.00 0.00 0.00 0.00 166.96 1336.78 0.09 997.18 0.47 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.4159 124.76 0.00 0.00 0.00 0.00 0.00 124.76 1379.74 0.10 1121.85 0.53 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.5565 166.96 0.00 0.00 0.00 0.00 0.00 166.96 1411.84 0.10 1288.72 0.61 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.8379 251.36 0.00 0.00 0.00 0.00 0.00 251.36 1454.80 0.10 1539.98 0.73 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.7441 223.23 0.00 0.00 0.00 0.00 0.00 223.23 1519.49 0.11 1763.10 0.83 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.6503 195.10 0.00 0.00 0.00 0.00 0.00 195.10 1576.94 0.11 1958.09 0.92 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.6972 209.16 0.00 0.00 0.00 0.00 0.00 209.16 1627.14 0.11 2167.13 1.02 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.7441 223.23 0.00 0.00 0.00 0.00 0.00 223.23 1680.97 0.12 2390.25 1.13 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 1.2599 377.96 0.00 0.00 0.00 0.00 0.00 377.96 1738.41 0.12 2768.08 1.31 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 1.6350 490.49 0.00 0.00 0.00 0.00 0.00 490.49 1835.69 0.13 3258.44 1.54 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.9316 279.49 0.00 0.00 0.00 0.00 0.00 279.49 1961.94 0.14 3537.80 1.67 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 2.4789 743.68 0.00 0.00 0.00 0.00 0.00 743.68 2033.87 0.14 4281.34 2.02 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 2.7134 814.01 0.00 0.00 0.00 0.00 0.00 814.01 2225.30 0.15 5095.19 2.41 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 3.1354 940.61 0.00 0.00 0.00 0.00 0.00 940.61 2434.85 0.17 6035.63 2.85 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 2.0569 617.08 0.00 0.00 0.00 0.00 0.00 617.08 2676.98 0.19 6652.53 3.14 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.2283 68.50 0.00 0.00 0.00 0.00 0.00 68.50 2835.81 0.20 6720.83 3.17 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.1346 40.37 0.00 0.00 0.00 0.00 0.00 40.37 2853.39 0.20 6761.00 3.19 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.1346 40.37 0.00 0.00 0.00 0.00 0.00 40.37 2863.74 0.20 6801.17 3.21 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0281 8.44 0.00 0.00 0.00 0.00 0.00 8.44 2874.08 0.20 6809.41 3.22 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2876.20 0.20 6809.21 3.22 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2876.15 0.20 6809.01 3.22 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2876.10 0.20 6808.81 3.22 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2876.04 0.20 6808.61 3.22 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2875.99 0.20 6808.41 3.21 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2875.94 0.20 6808.21 3.21 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2875.89 0.20 6808.01 3.21 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2875.84 0.20 6807.81 3.21 0.00 0.00 Total volume (cf)6813.47 Total Overflow (cf)0.00
632

3 of 6
6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0287 8.60 0.00 0.00 0.00 0.00 0.00 8.60 1123.00 0.08 8.52 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0344 10.32 0.00 0.00 0.00 0.00 0.00 10.32 1125.19 0.08 18.76 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0344 10.32 0.00 0.00 0.00 0.00 0.00 10.32 1127.83 0.08 29.00 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0344 10.32 0.00 0.00 0.00 0.00 0.00 10.32 1130.47 0.08 39.24 0.02 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0344 10.32 0.00 0.00 0.00 0.00 0.00 10.32 1133.10 0.08 49.48 0.02 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0401 12.04 0.00 0.00 0.00 0.00 0.00 12.04 1135.74 0.08 61.44 0.03 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0401 12.04 0.00 0.00 0.00 0.00 0.00 12.04 1138.82 0.08 73.40 0.03 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0401 12.04 0.00 0.00 0.00 0.00 0.00 12.04 1141.90 0.08 85.36 0.04 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0401 12.04 0.00 0.00 0.00 0.00 0.00 12.04 1144.98 0.08 97.32 0.05 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0401 12.04 0.00 0.00 0.00 0.00 0.00 12.04 1148.06 0.08 109.27 0.05 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0401 12.04 0.00 0.00 0.00 0.00 0.00 12.04 1151.13 0.08 121.23 0.06 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1154.21 0.08 134.91 0.06 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1157.73 0.08 148.59 0.07 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1161.26 0.08 162.26 0.08 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1164.78 0.08 175.94 0.08 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1168.30 0.08 189.62 0.09 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1171.82 0.08 203.29 0.10 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1175.34 0.08 216.97 0.10 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1178.86 0.08 230.65 0.11 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1182.38 0.08 244.32 0.12 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1185.90 0.08 258.00 0.12 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1189.43 0.08 271.67 0.13 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1192.95 0.08 285.35 0.13 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1196.47 0.08 300.74 0.14 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0459 13.76 0.00 0.00 0.00 0.00 0.00 13.76 1200.43 0.08 314.41 0.15 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1203.95 0.08 329.81 0.16 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1207.91 0.08 345.20 0.16 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1211.88 0.08 360.60 0.17 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1215.84 0.08 375.99 0.18 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1219.80 0.08 391.38 0.18 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1223.77 0.08 406.77 0.19 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0516 15.48 0.00 0.00 0.00 0.00 0.00 15.48 1227.73 0.09 422.17 0.20 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0573 17.20 0.00 0.00 0.00 0.00 0.00 17.20 1231.69 0.09 439.28 0.21 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0573 17.20 0.00 0.00 0.00 0.00 0.00 17.20 1236.10 0.09 456.39 0.22 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0573 17.20 0.00 0.00 0.00 0.00 0.00 17.20 1240.50 0.09 473.50 0.22 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0573 17.20 0.00 0.00 0.00 0.00 0.00 17.20 1244.91 0.09 490.61 0.23 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0573 17.20 0.00 0.00 0.00 0.00 0.00 17.20 1249.32 0.09 507.72 0.24 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0631 18.92 0.00 0.00 0.00 0.00 0.00 18.92 1253.72 0.09 526.55 0.25 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0631 18.92 0.00 0.00 0.00 0.00 0.00 18.92 1258.57 0.09 545.38 0.26 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0631 18.92 0.00 0.00 0.00 0.00 0.00 18.92 1263.42 0.09 564.21 0.27 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0688 20.64 0.00 0.00 0.00 0.00 0.00 20.64 1268.27 0.09 584.76 0.28 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0745 22.36 0.00 0.00 0.00 0.00 0.00 22.36 1273.56 0.09 607.02 0.29 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0931 27.93 0.00 0.00 0.00 0.00 0.00 27.93 1279.29 0.09 634.87 0.30 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0931 27.93 0.00 0.00 0.00 0.00 0.00 27.93 1286.46 0.09 662.72 0.31 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.1504 45.13 0.00 0.00 0.00 0.00 0.00 45.13 1293.63 0.09 707.76 0.33 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.1504 45.13 0.00 0.00 0.00 0.00 0.00 45.13 1305.22 0.09 752.80 0.36 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.2078 62.33 0.00 0.00 0.00 0.00 0.00 62.33 1316.82 0.09 815.04 0.38 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.2078 62.33 0.00 0.00 0.00 0.00 0.00 62.33 1332.84 0.09 877.27 0.41 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.2651 79.53 0.00 0.00 0.00 0.00 0.00 79.53 1348.87 0.09 956.70 0.45 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.3224 96.72 0.00 0.00 0.00 0.00 0.00 96.72 1369.32 0.10 1053.33 0.50 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.3797 113.92 0.00 0.00 0.00 0.00 0.00 113.92 1394.20 0.10 1167.15 0.55 0.00 0.00 633

5 of 6
24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1123.00 0.23 4.35 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1124.12 0.23 10.99 0.01 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1125.83 0.23 17.63 0.01 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 1127.54 0.23 26.56 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1129.84 0.24 33.20 0.02 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1131.55 0.24 39.84 0.02 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0076 6.87 0.00 0.00 0.00 0.00 0.00 6.87 1133.26 0.24 46.48 0.02 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 1134.97 0.24 55.40 0.03 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 1137.26 0.24 64.33 0.03 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 1139.56 0.24 73.26 0.03 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0127 11.46 0.00 0.00 0.00 0.00 0.00 11.46 1141.86 0.24 84.48 0.04 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0127 11.46 0.00 0.00 0.00 0.00 0.00 11.46 1144.75 0.24 95.70 0.05 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0127 11.46 0.00 0.00 0.00 0.00 0.00 11.46 1147.64 0.24 106.92 0.05 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0127 11.46 0.00 0.00 0.00 0.00 0.00 11.46 1150.53 0.24 118.14 0.06 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0127 11.46 0.00 0.00 0.00 0.00 0.00 11.46 1153.42 0.24 129.35 0.06 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 1156.30 0.24 142.86 0.07 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 1159.78 0.24 156.37 0.07 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0178 16.04 0.00 0.00 0.00 0.00 0.00 16.04 1163.26 0.24 172.16 0.08 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0178 16.04 0.00 0.00 0.00 0.00 0.00 16.04 1167.33 0.24 187.96 0.09 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 1171.39 0.24 206.05 0.10 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 1176.05 0.25 219.55 0.10 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0178 16.04 0.00 0.00 0.00 0.00 0.00 16.04 1179.53 0.25 235.35 0.11 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 1183.59 0.25 253.43 0.12 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 1188.25 0.25 271.52 0.13 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0229 20.62 0.00 0.00 0.00 0.00 0.00 20.62 1192.91 0.25 291.89 0.14 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0229 20.62 0.00 0.00 0.00 0.00 0.00 20.62 1198.15 0.25 312.26 0.15 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0255 22.91 0.00 0.00 0.00 0.00 0.00 22.91 1203.40 0.25 334.93 0.16 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0255 22.91 0.00 0.00 0.00 0.00 0.00 22.91 1209.23 0.25 357.59 0.17 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0255 22.91 0.00 0.00 0.00 0.00 0.00 22.91 1215.07 0.25 380.25 0.18 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0280 25.21 0.00 0.00 0.00 0.00 0.00 25.21 1220.90 0.25 405.20 0.19 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0306 27.50 0.00 0.00 0.00 0.00 0.00 27.50 1227.33 0.26 432.44 0.20 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0331 29.79 0.00 0.00 0.00 0.00 0.00 29.79 1234.34 0.26 461.98 0.22 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0382 34.37 0.00 0.00 0.00 0.00 0.00 34.37 1241.94 0.26 496.09 0.23 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0382 34.37 0.00 0.00 0.00 0.00 0.00 34.37 1250.73 0.26 530.20 0.25 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0407 36.66 0.00 0.00 0.00 0.00 0.00 36.66 1259.51 0.26 566.60 0.27 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0433 38.95 0.00 0.00 0.00 0.00 0.00 38.95 1268.88 0.26 605.29 0.29 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0484 43.54 0.00 0.00 0.00 0.00 0.00 43.54 1278.84 0.27 648.56 0.31 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0509 45.83 0.00 0.00 0.00 0.00 0.00 45.83 1289.98 0.27 694.12 0.33 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0535 48.12 0.00 0.00 0.00 0.00 0.00 48.12 1301.71 0.27 741.97 0.35 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0560 50.41 0.00 0.00 0.00 0.00 0.00 50.41 1314.03 0.27 792.11 0.37 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0382 34.37 0.00 0.00 0.00 0.00 0.00 34.37 1326.94 0.28 826.20 0.39 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0382 34.37 0.00 0.00 0.00 0.00 0.00 34.37 1335.72 0.28 860.30 0.41 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0509 45.83 0.00 0.00 0.00 0.00 0.00 45.83 1344.50 0.28 905.84 0.43 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0509 45.83 0.00 0.00 0.00 0.00 0.00 45.83 1356.23 0.28 951.39 0.45 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0484 43.54 0.00 0.00 0.00 0.00 0.00 43.54 1367.95 0.28 994.64 0.47 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0484 43.54 0.00 0.00 0.00 0.00 0.00 43.54 1379.09 0.29 1037.89 0.49 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0433 38.95 0.00 0.00 0.00 0.00 0.00 38.95 1390.22 0.29 1076.56 0.51 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0458 41.25 0.00 0.00 0.00 0.00 0.00 41.25 1400.18 0.29 1117.51 0.53 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0637 57.29 0.00 0.00 0.00 0.00 0.00 57.29 1410.72 0.29 1174.50 0.55 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0662 59.58 0.00 0.00 0.00 0.00 0.00 59.58 1425.40 0.30 1233.78 0.58 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0784 70.59 0.00 0.00 0.00 0.00 0.00 70.59 1440.66 0.30 1304.08 0.62 0.00 0.00 635

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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=0.98ac+0.09ac typ street frontage=1.07ac 5/7/2024 LOT 8
Drainage Area (ac.)1.0700 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 AND 0.09AC TYPICAL STREET FRONTAGE Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =3234 s.f.Bot. =1078 s.f.Max. Depth (d)=4 Max. storage=8238.87 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.5472 164.17 0.00 0.00 0.00 0.00 0.00 164.17 1078.00 0.07 164.09 0.08 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.8904 267.13 0.00 0.00 0.00 0.00 0.00 267.13 1120.94 0.08 431.15 0.21 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 0.9841 295.22 0.00 0.00 0.00 0.00 0.00 295.22 1190.83 0.08 726.28 0.35 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 0.9216 276.49 0.00 0.00 0.00 0.00 0.00 276.49 1268.06 0.09 1002.69 0.49 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 1.4521 435.63 0.00 0.00 0.00 0.00 0.00 435.63 1340.39 0.09 1438.22 0.70 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 1.6705 501.15 0.00 0.00 0.00 0.00 0.00 501.15 1454.36 0.10 1939.27 0.94 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 2.0137 604.12 0.00 0.00 0.00 0.00 0.00 604.12 1585.48 0.11 2543.28 1.23 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 2.2009 660.28 0.00 0.00 0.00 0.00 0.00 660.28 1743.54 0.12 3203.44 1.56 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 3.2306 969.19 0.00 0.00 0.00 0.00 0.00 969.19 1916.30 0.13 4172.49 2.03 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 4.8843 1465.30 0.00 0.00 0.00 0.00 0.00 1465.30 2169.89 0.15 5637.64 2.74 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 4.4163 1324.89 0.00 0.00 0.00 0.00 0.00 1324.89 2553.30 0.18 6962.36 3.38 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.7032 210.97 0.00 0.00 0.00 0.00 0.00 210.97 2899.95 0.20 7173.13 3.48 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2955.11 0.21 7172.92 3.48 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2955.06 0.21 7172.72 3.48 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2955.00 0.21 7172.51 3.48 0.00 0.00 Total volume (cf)7174.54 Total Overflow (cf)0.00
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0522 15.65 0.00 0.00 0.00 0.00 0.00 15.65 1078.00 0.07 15.58 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0522 15.65 0.00 0.00 0.00 0.00 0.00 15.65 1082.08 0.08 31.16 0.02 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0441 13.24 0.00 0.00 0.00 0.00 0.00 13.24 1086.15 0.08 44.33 0.02 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0602 18.06 0.00 0.00 0.00 0.00 0.00 18.06 1089.60 0.08 62.31 0.03 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0602 18.06 0.00 0.00 0.00 0.00 0.00 18.06 1094.31 0.08 80.30 0.04 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.1152 34.55 0.00 0.00 0.00 0.00 0.00 34.55 1099.01 0.08 114.77 0.06 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0602 18.06 0.00 0.00 0.00 0.00 0.00 18.06 1108.03 0.08 132.76 0.06 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.1152 34.55 0.00 0.00 0.00 0.00 0.00 34.55 1112.74 0.08 167.23 0.08 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.1152 34.55 0.00 0.00 0.00 0.00 0.00 34.55 1121.76 0.08 201.71 0.10 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0602 18.06 0.00 0.00 0.00 0.00 0.00 18.06 1130.79 0.08 219.69 0.11 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0642 19.27 0.00 0.00 0.00 0.00 0.00 19.27 1135.49 0.08 238.88 0.12 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.1152 34.55 0.00 0.00 0.00 0.00 0.00 34.55 1140.51 0.08 273.35 0.13 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.2757 82.72 0.00 0.00 0.00 0.00 0.00 82.72 1149.53 0.08 355.99 0.17 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.2757 82.72 0.00 0.00 0.00 0.00 0.00 82.72 1171.16 0.08 438.63 0.21 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.2757 82.72 0.00 0.00 0.00 0.00 0.00 82.72 1192.78 0.08 521.26 0.25 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.1955 58.64 0.00 0.00 0.00 0.00 0.00 58.64 1214.41 0.08 579.81 0.28 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.4363 130.88 0.00 0.00 0.00 0.00 0.00 130.88 1229.73 0.09 710.61 0.35 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.4764 142.92 0.00 0.00 0.00 0.00 0.00 142.92 1263.96 0.09 853.44 0.41 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.3560 106.80 0.00 0.00 0.00 0.00 0.00 106.80 1301.33 0.09 960.15 0.47 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.4764 142.92 0.00 0.00 0.00 0.00 0.00 142.92 1329.26 0.09 1102.98 0.54 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.7172 215.16 0.00 0.00 0.00 0.00 0.00 215.16 1366.63 0.09 1318.05 0.64 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.6369 191.08 0.00 0.00 0.00 0.00 0.00 191.08 1422.92 0.10 1509.03 0.73 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.5567 167.00 0.00 0.00 0.00 0.00 0.00 167.00 1472.89 0.10 1675.93 0.81 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.5968 179.04 0.00 0.00 0.00 0.00 0.00 179.04 1516.57 0.11 1854.87 0.90 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.6369 191.08 0.00 0.00 0.00 0.00 0.00 191.08 1563.39 0.11 2045.84 0.99 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 1.0784 323.53 0.00 0.00 0.00 0.00 0.00 323.53 1613.37 0.11 2369.26 1.15 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 1.3995 419.86 0.00 0.00 0.00 0.00 0.00 419.86 1698.00 0.12 2789.00 1.35 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.7975 239.25 0.00 0.00 0.00 0.00 0.00 239.25 1807.84 0.13 3028.12 1.47 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 2.1220 636.59 0.00 0.00 0.00 0.00 0.00 636.59 1870.42 0.13 3664.58 1.78 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 2.3226 696.79 0.00 0.00 0.00 0.00 0.00 696.79 2036.97 0.14 4361.23 2.12 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 2.6839 805.16 0.00 0.00 0.00 0.00 0.00 805.16 2219.28 0.15 5166.24 2.51 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 1.7607 528.22 0.00 0.00 0.00 0.00 0.00 528.22 2429.94 0.17 5694.30 2.76 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.1955 58.64 0.00 0.00 0.00 0.00 0.00 58.64 2568.12 0.18 5752.75 2.79 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.1152 34.55 0.00 0.00 0.00 0.00 0.00 34.55 2583.42 0.18 5787.13 2.81 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.1152 34.55 0.00 0.00 0.00 0.00 0.00 34.55 2592.41 0.18 5821.50 2.83 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0241 7.22 0.00 0.00 0.00 0.00 0.00 7.22 2601.41 0.18 5828.55 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2603.25 0.18 5828.36 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2603.20 0.18 5828.18 2.83 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2603.16 0.18 5828.00 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2603.11 0.18 5827.82 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2603.06 0.18 5827.64 2.83 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2603.01 0.18 5827.46 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2602.97 0.18 5827.28 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2602.92 0.18 5827.10 2.83 0.00 0.00 Total volume (cf)5832.33 Total Overflow (cf)0.00
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6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0245 7.36 0.00 0.00 0.00 0.00 0.00 7.36 1078.00 0.07 7.29 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0294 8.83 0.00 0.00 0.00 0.00 0.00 8.83 1079.91 0.07 16.04 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0294 8.83 0.00 0.00 0.00 0.00 0.00 8.83 1082.20 0.08 24.80 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0294 8.83 0.00 0.00 0.00 0.00 0.00 8.83 1084.49 0.08 33.56 0.02 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0294 8.83 0.00 0.00 0.00 0.00 0.00 8.83 1086.78 0.08 42.31 0.02 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0343 10.30 0.00 0.00 0.00 0.00 0.00 10.30 1089.07 0.08 52.54 0.03 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0343 10.30 0.00 0.00 0.00 0.00 0.00 10.30 1091.75 0.08 62.77 0.03 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0343 10.30 0.00 0.00 0.00 0.00 0.00 10.30 1094.43 0.08 73.00 0.04 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0343 10.30 0.00 0.00 0.00 0.00 0.00 10.30 1097.10 0.08 83.23 0.04 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0343 10.30 0.00 0.00 0.00 0.00 0.00 10.30 1099.78 0.08 93.46 0.05 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0343 10.30 0.00 0.00 0.00 0.00 0.00 10.30 1102.46 0.08 103.68 0.05 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1105.13 0.08 115.38 0.06 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1108.19 0.08 127.08 0.06 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1111.26 0.08 138.78 0.07 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1114.32 0.08 150.48 0.07 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1117.38 0.08 162.18 0.08 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1120.44 0.08 173.88 0.08 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1123.50 0.08 185.58 0.09 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1126.56 0.08 197.28 0.10 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1129.62 0.08 208.98 0.10 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1132.69 0.08 220.67 0.11 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1135.75 0.08 232.37 0.11 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1138.81 0.08 244.07 0.12 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1141.87 0.08 257.24 0.12 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1145.32 0.08 268.94 0.13 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1148.38 0.08 282.10 0.14 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1151.82 0.08 295.27 0.14 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1155.27 0.08 308.44 0.15 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1158.71 0.08 321.61 0.16 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1162.16 0.08 334.78 0.16 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1165.61 0.08 347.95 0.17 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1169.05 0.08 361.11 0.18 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0491 14.72 0.00 0.00 0.00 0.00 0.00 14.72 1172.50 0.08 375.75 0.18 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0491 14.72 0.00 0.00 0.00 0.00 0.00 14.72 1176.33 0.08 390.39 0.19 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0491 14.72 0.00 0.00 0.00 0.00 0.00 14.72 1180.16 0.08 405.03 0.20 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0491 14.72 0.00 0.00 0.00 0.00 0.00 14.72 1183.99 0.08 419.67 0.20 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0491 14.72 0.00 0.00 0.00 0.00 0.00 14.72 1187.82 0.08 434.31 0.21 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0540 16.19 0.00 0.00 0.00 0.00 0.00 16.19 1191.65 0.08 450.42 0.22 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0540 16.19 0.00 0.00 0.00 0.00 0.00 16.19 1195.87 0.08 466.53 0.23 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0540 16.19 0.00 0.00 0.00 0.00 0.00 16.19 1200.08 0.08 482.64 0.23 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0589 17.66 0.00 0.00 0.00 0.00 0.00 17.66 1204.30 0.08 500.22 0.24 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0638 19.14 0.00 0.00 0.00 0.00 0.00 19.14 1208.90 0.08 519.27 0.25 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0797 23.91 0.00 0.00 0.00 0.00 0.00 23.91 1213.89 0.08 543.10 0.26 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0797 23.91 0.00 0.00 0.00 0.00 0.00 23.91 1220.12 0.08 566.92 0.28 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.1288 38.63 0.00 0.00 0.00 0.00 0.00 38.63 1226.36 0.09 605.47 0.29 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.1288 38.63 0.00 0.00 0.00 0.00 0.00 38.63 1236.44 0.09 644.02 0.31 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.1778 53.35 0.00 0.00 0.00 0.00 0.00 53.35 1246.53 0.09 697.29 0.34 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.1778 53.35 0.00 0.00 0.00 0.00 0.00 53.35 1260.47 0.09 750.55 0.36 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.2269 68.07 0.00 0.00 0.00 0.00 0.00 68.07 1274.41 0.09 818.54 0.40 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.2760 82.79 0.00 0.00 0.00 0.00 0.00 82.79 1292.20 0.09 901.24 0.44 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.3251 97.52 0.00 0.00 0.00 0.00 0.00 97.52 1313.84 0.09 998.67 0.48 0.00 0.00 639

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4:20 2 0.91 0.56 N/A 0.3468 0.3741 112.24 0.00 0.00 0.00 0.00 0.00 112.24 1339.34 0.09 1110.81 0.54 0.00 0.00 4:25 2.1 0.96 0.56 N/A 0.3922 0.4232 126.96 0.00 0.00 0.00 0.00 0.00 126.96 1368.68 0.10 1237.67 0.60 0.00 0.00 4:30 2.1 0.96 0.56 N/A 0.3922 0.4232 126.96 0.00 0.00 0.00 0.00 0.00 126.96 1401.88 0.10 1364.53 0.66 0.00 0.00 4:35 2.2 1.00 0.56 N/A 0.4377 0.4723 141.68 0.00 0.00 0.00 0.00 0.00 141.68 1435.08 0.10 1506.11 0.73 0.00 0.00 4:40 2.3 1.05 0.56 N/A 0.4832 0.5213 156.40 0.00 0.00 0.00 0.00 0.00 156.40 1472.13 0.10 1662.41 0.81 0.00 0.00 4:45 2.4 1.09 0.56 N/A 0.5287 0.5704 171.12 0.00 0.00 0.00 0.00 0.00 171.12 1513.03 0.11 1833.42 0.89 0.00 0.00 4:50 2.4 1.09 0.56 N/A 0.5287 0.5704 171.12 0.00 0.00 0.00 0.00 0.00 171.12 1557.78 0.11 2004.43 0.97 0.00 0.00 4:55 2.5 1.14 0.56 N/A 0.5742 0.6195 185.84 0.00 0.00 0.00 0.00 0.00 185.84 1602.53 0.11 2190.16 1.06 0.00 0.00 5:00 2.6 1.18 0.56 N/A 0.6196 0.6685 200.56 0.00 0.00 0.00 0.00 0.00 200.56 1651.13 0.11 2390.61 1.16 0.00 0.00 5:05 3.1 1.41 0.56 N/A 0.8470 0.9139 274.16 0.00 0.00 0.00 0.00 0.00 274.16 1703.59 0.12 2664.65 1.29 0.00 0.00 5:10 3.6 1.64 0.56 N/A 1.0744 1.1592 347.77 0.00 0.00 0.00 0.00 0.00 347.77 1775.30 0.12 3012.30 1.46 0.00 0.00 5:15 3.9 1.77 0.56 N/A 1.2109 1.3064 391.93 0.00 0.00 0.00 0.00 0.00 391.93 1866.28 0.13 3404.10 1.65 0.00 0.00 5:20 4.2 1.91 0.56 N/A 1.3473 1.4536 436.09 0.00 0.00 0.00 0.00 0.00 436.09 1968.81 0.14 3840.05 1.86 0.00 0.00 5:25 4.7 2.14 0.56 N/A 1.5747 1.6990 509.70 0.00 0.00 0.00 0.00 0.00 509.70 2082.89 0.14 4349.60 2.11 0.00 0.00 5:30 5.6 2.55 0.56 N/A 1.9840 2.1406 642.18 0.00 0.00 0.00 0.00 0.00 642.18 2216.23 0.15 4991.63 2.42 0.00 0.00 5:35 1.9 0.86 0.56 N/A 0.3013 0.3251 97.52 0.00 0.00 0.00 0.00 0.00 97.52 2384.24 0.17 5088.98 2.47 0.00 0.00 5:40 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 2409.72 0.17 5102.06 2.48 0.00 0.00 5:45 0.6 0.27 0.56 0.25 0.0273 0.0294 8.83 0.00 0.00 0.00 0.00 0.00 8.83 2413.14 0.17 5110.73 2.48 0.00 0.00 5:50 0.5 0.23 0.56 0.20 0.0227 0.0245 7.36 0.00 0.00 0.00 0.00 0.00 7.36 2415.41 0.17 5117.92 2.48 0.00 0.00 5:55 0.3 0.14 0.56 0.12 0.0136 0.0147 4.42 0.00 0.00 0.00 0.00 0.00 4.42 2417.29 0.17 5122.17 2.49 0.00 0.00 6:00 0.2 0.09 0.56 0.08 0.0091 0.0098 2.94 0.00 0.00 0.00 0.00 0.00 2.94 2418.40 0.17 5124.95 2.49 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2419.13 0.17 5124.78 2.49 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2419.09 0.17 5124.61 2.49 0.00 0.00 6:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2419.04 0.17 5124.44 2.49 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2419.00 0.17 5124.27 2.49 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2418.95 0.17 5124.11 2.49 0.00 0.00 6:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2418.91 0.17 5123.94 2.49 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2418.87 0.17 5123.77 2.49 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2418.82 0.17 5123.60 2.49 0.00 0.00 6:45 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2418.78 0.17 5123.43 2.49 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2418.73 0.17 5123.27 2.49 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2418.69 0.17 5123.10 2.49 0.00 0.00 7:00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2418.65 0.17 5122.93 2.49 0.00 0.00 Total volume (cf)5131.78 Total Overflow (cf)0.00
640

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24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0044 3.92 0.00 0.00 0.00 0.00 0.00 3.92 1078.00 0.22 3.70 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1078.97 0.22 9.36 0.00 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1080.45 0.23 15.02 0.01 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0087 7.85 0.00 0.00 0.00 0.00 0.00 7.85 1081.93 0.23 22.64 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1083.92 0.23 28.30 0.01 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1085.40 0.23 33.95 0.02 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1086.89 0.23 39.61 0.02 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0087 7.85 0.00 0.00 0.00 0.00 0.00 7.85 1088.37 0.23 47.23 0.02 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0087 7.85 0.00 0.00 0.00 0.00 0.00 7.85 1090.36 0.23 54.85 0.03 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0087 7.85 0.00 0.00 0.00 0.00 0.00 7.85 1092.35 0.23 62.47 0.03 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0109 9.81 0.00 0.00 0.00 0.00 0.00 9.81 1094.35 0.23 72.05 0.03 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0109 9.81 0.00 0.00 0.00 0.00 0.00 9.81 1096.85 0.23 81.63 0.04 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0109 9.81 0.00 0.00 0.00 0.00 0.00 9.81 1099.36 0.23 91.21 0.04 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0109 9.81 0.00 0.00 0.00 0.00 0.00 9.81 1101.87 0.23 100.78 0.05 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0109 9.81 0.00 0.00 0.00 0.00 0.00 9.81 1104.37 0.23 110.36 0.05 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0131 11.77 0.00 0.00 0.00 0.00 0.00 11.77 1106.88 0.23 121.90 0.06 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0131 11.77 0.00 0.00 0.00 0.00 0.00 11.77 1109.90 0.23 133.44 0.06 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0153 13.73 0.00 0.00 0.00 0.00 0.00 13.73 1112.92 0.23 146.93 0.07 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0153 13.73 0.00 0.00 0.00 0.00 0.00 13.73 1116.45 0.23 160.43 0.08 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0174 15.69 0.00 0.00 0.00 0.00 0.00 15.69 1119.98 0.23 175.89 0.09 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0131 11.77 0.00 0.00 0.00 0.00 0.00 11.77 1124.03 0.23 187.43 0.09 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0153 13.73 0.00 0.00 0.00 0.00 0.00 13.73 1127.05 0.23 200.92 0.10 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0174 15.69 0.00 0.00 0.00 0.00 0.00 15.69 1130.58 0.24 216.38 0.11 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0174 15.69 0.00 0.00 0.00 0.00 0.00 15.69 1134.62 0.24 231.83 0.11 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0196 17.65 0.00 0.00 0.00 0.00 0.00 17.65 1138.67 0.24 249.25 0.12 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0196 17.65 0.00 0.00 0.00 0.00 0.00 17.65 1143.22 0.24 266.66 0.13 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0218 19.61 0.00 0.00 0.00 0.00 0.00 19.61 1147.78 0.24 286.04 0.14 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0218 19.61 0.00 0.00 0.00 0.00 0.00 19.61 1152.85 0.24 305.41 0.15 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0218 19.61 0.00 0.00 0.00 0.00 0.00 19.61 1157.92 0.24 324.79 0.16 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0240 21.58 0.00 0.00 0.00 0.00 0.00 21.58 1162.99 0.24 346.12 0.17 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0262 23.54 0.00 0.00 0.00 0.00 0.00 23.54 1168.58 0.24 369.42 0.18 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0283 25.50 0.00 0.00 0.00 0.00 0.00 25.50 1174.67 0.24 394.67 0.19 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0327 29.42 0.00 0.00 0.00 0.00 0.00 29.42 1181.28 0.25 423.85 0.21 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0327 29.42 0.00 0.00 0.00 0.00 0.00 29.42 1188.91 0.25 453.02 0.22 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0349 31.38 0.00 0.00 0.00 0.00 0.00 31.38 1196.55 0.25 484.15 0.24 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0370 33.34 0.00 0.00 0.00 0.00 0.00 33.34 1204.70 0.25 517.25 0.25 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0414 37.27 0.00 0.00 0.00 0.00 0.00 37.27 1213.36 0.25 554.26 0.27 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0436 39.23 0.00 0.00 0.00 0.00 0.00 39.23 1223.04 0.25 593.24 0.29 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0458 41.19 0.00 0.00 0.00 0.00 0.00 41.19 1233.24 0.26 634.17 0.31 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0479 43.15 0.00 0.00 0.00 0.00 0.00 43.15 1243.95 0.26 677.07 0.33 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0327 29.42 0.00 0.00 0.00 0.00 0.00 29.42 1255.18 0.26 706.23 0.34 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0327 29.42 0.00 0.00 0.00 0.00 0.00 29.42 1262.81 0.26 735.38 0.36 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0436 39.23 0.00 0.00 0.00 0.00 0.00 39.23 1270.44 0.26 774.35 0.38 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0436 39.23 0.00 0.00 0.00 0.00 0.00 39.23 1280.64 0.27 813.31 0.39 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0414 37.27 0.00 0.00 0.00 0.00 0.00 37.27 1290.83 0.27 850.31 0.41 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0414 37.27 0.00 0.00 0.00 0.00 0.00 37.27 1300.51 0.27 887.31 0.43 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0370 33.34 0.00 0.00 0.00 0.00 0.00 33.34 1310.20 0.27 920.38 0.45 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0392 35.31 0.00 0.00 0.00 0.00 0.00 35.31 1318.85 0.27 955.41 0.46 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0545 49.04 0.00 0.00 0.00 0.00 0.00 49.04 1328.02 0.28 1004.17 0.49 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0567 51.00 0.00 0.00 0.00 0.00 0.00 51.00 1340.78 0.28 1054.89 0.51 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0671 60.43 0.00 0.00 0.00 0.00 0.00 60.43 1354.05 0.28 1115.04 0.54 0.00 0.00 641

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13:00 2.9 0.59 0.50 N/A 0.0900 0.0971 87.42 0.00 0.00 0.00 0.00 0.00 87.42 1369.79 0.29 1202.17 0.58 0.00 0.00 13:15 3.4 0.69 0.49 N/A 0.1985 0.2142 192.78 0.00 0.00 0.00 0.00 0.00 192.78 1392.59 0.29 1394.66 0.68 0.00 0.00 13:30 3.4 0.69 0.48 N/A 0.2059 0.2222 199.97 0.00 0.00 0.00 0.00 0.00 199.97 1442.96 0.30 1594.33 0.77 0.00 0.00 13:45 2.3 0.46 0.47 0.42 0.0465 0.0501 45.11 0.00 0.00 0.00 0.00 0.00 45.11 1495.22 0.31 1639.13 0.80 0.00 0.00 14:00 2.3 0.46 0.47 0.42 0.0465 0.0501 45.11 0.00 0.00 0.00 0.00 0.00 45.11 1506.94 0.31 1683.93 0.82 0.00 0.00 14:15 2.7 0.55 0.46 N/A 0.0862 0.0930 83.69 0.00 0.00 0.00 0.00 0.00 83.69 1518.66 0.32 1767.30 0.86 0.00 0.00 14:30 2.6 0.53 0.45 N/A 0.0730 0.0788 70.88 0.00 0.00 0.00 0.00 0.00 70.88 1540.48 0.32 1837.87 0.89 0.00 0.00 14:45 2.6 0.53 0.45 N/A 0.0799 0.0862 77.60 0.00 0.00 0.00 0.00 0.00 77.60 1558.94 0.32 1915.14 0.93 0.00 0.00 15:00 2.5 0.51 0.44 N/A 0.0665 0.0718 64.60 0.00 0.00 0.00 0.00 0.00 64.60 1579.17 0.33 1979.41 0.96 0.00 0.00 15:15 2.4 0.48 0.43 N/A 0.0530 0.0572 51.50 0.00 0.00 0.00 0.00 0.00 51.50 1595.98 0.33 2030.58 0.99 0.00 0.00 15:30 2.3 0.46 0.43 0.42 0.0465 0.0501 45.11 0.00 0.00 0.00 0.00 0.00 45.11 1609.37 0.34 2075.36 1.01 0.00 0.00 15:45 1.9 0.38 0.42 0.35 0.0384 0.0414 37.27 0.00 0.00 0.00 0.00 0.00 37.27 1621.09 0.34 2112.29 1.03 0.00 0.00 16:00 1.9 0.38 0.41 0.35 0.0384 0.0414 37.27 0.00 0.00 0.00 0.00 0.00 37.27 1630.76 0.34 2149.21 1.04 0.00 0.00 16:15 0.4 0.08 0.41 0.07 0.0081 0.0087 7.85 0.00 0.00 0.00 0.00 0.00 7.85 1640.42 0.34 2156.72 1.05 0.00 0.00 16:30 0.4 0.08 0.40 0.07 0.0081 0.0087 7.85 0.00 0.00 0.00 0.00 0.00 7.85 1642.38 0.34 2164.22 1.05 0.00 0.00 16:45 0.3 0.06 0.39 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1644.35 0.34 2169.76 1.05 0.00 0.00 17:00 0.3 0.06 0.39 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1645.80 0.34 2175.31 1.06 0.00 0.00 17:15 0.5 0.10 0.38 0.09 0.0101 0.0109 9.81 0.00 0.00 0.00 0.00 0.00 9.81 1647.25 0.34 2184.77 1.06 0.00 0.00 17:30 0.5 0.10 0.38 0.09 0.0101 0.0109 9.81 0.00 0.00 0.00 0.00 0.00 9.81 1649.72 0.34 2194.23 1.07 0.00 0.00 17:45 0.5 0.10 0.37 0.09 0.0101 0.0109 9.81 0.00 0.00 0.00 0.00 0.00 9.81 1652.20 0.34 2203.70 1.07 0.00 0.00 18:00 0.4 0.08 0.37 0.07 0.0081 0.0087 7.85 0.00 0.00 0.00 0.00 0.00 7.85 1654.68 0.34 2211.20 1.07 0.00 0.00 18:15 0.4 0.08 0.36 0.07 0.0081 0.0087 7.85 0.00 0.00 0.00 0.00 0.00 7.85 1656.64 0.35 2218.70 1.08 0.00 0.00 18:30 0.4 0.08 0.35 0.07 0.0081 0.0087 7.85 0.00 0.00 0.00 0.00 0.00 7.85 1658.60 0.35 2226.20 1.08 0.00 0.00 18:45 0.3 0.06 0.35 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1660.57 0.35 2231.74 1.08 0.00 0.00 19:00 0.2 0.04 0.34 0.04 0.0040 0.0044 3.92 0.00 0.00 0.00 0.00 0.00 3.92 1662.02 0.35 2235.31 1.09 0.00 0.00 19:15 0.3 0.06 0.34 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1662.95 0.35 2240.85 1.09 0.00 0.00 19:30 0.4 0.08 0.34 0.07 0.0081 0.0087 7.85 0.00 0.00 0.00 0.00 0.00 7.85 1664.40 0.35 2248.35 1.09 0.00 0.00 19:45 0.3 0.06 0.33 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1666.36 0.35 2253.89 1.09 0.00 0.00 20:00 0.2 0.04 0.33 0.04 0.0040 0.0044 3.92 0.00 0.00 0.00 0.00 0.00 3.92 1667.81 0.35 2257.46 1.10 0.00 0.00 20:15 0.3 0.06 0.32 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1668.75 0.35 2263.00 1.10 0.00 0.00 20:30 0.3 0.06 0.32 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1670.20 0.35 2268.54 1.10 0.00 0.00 20:45 0.3 0.06 0.31 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1671.65 0.35 2274.07 1.10 0.00 0.00 21:00 0.2 0.04 0.31 0.04 0.0040 0.0044 3.92 0.00 0.00 0.00 0.00 0.00 3.92 1673.09 0.35 2277.65 1.11 0.00 0.00 21:15 0.3 0.06 0.31 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1674.03 0.35 2283.18 1.11 0.00 0.00 21:30 0.2 0.04 0.30 0.04 0.0040 0.0044 3.92 0.00 0.00 0.00 0.00 0.00 3.92 1675.48 0.35 2286.76 1.11 0.00 0.00 21:45 0.3 0.06 0.30 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1676.41 0.35 2292.29 1.11 0.00 0.00 22:00 0.2 0.04 0.30 0.04 0.0040 0.0044 3.92 0.00 0.00 0.00 0.00 0.00 3.92 1677.86 0.35 2295.87 1.11 0.00 0.00 22:15 0.3 0.06 0.29 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1678.80 0.35 2301.40 1.12 0.00 0.00 22:30 0.2 0.04 0.29 0.04 0.0040 0.0044 3.92 0.00 0.00 0.00 0.00 0.00 3.92 1680.25 0.35 2304.97 1.12 0.00 0.00 22:45 0.2 0.04 0.29 0.04 0.0040 0.0044 3.92 0.00 0.00 0.00 0.00 0.00 3.92 1681.18 0.35 2308.55 1.12 0.00 0.00 23:00 0.2 0.04 0.29 0.04 0.0040 0.0044 3.92 0.00 0.00 0.00 0.00 0.00 3.92 1682.12 0.35 2312.12 1.12 0.00 0.00 23:15 0.2 0.04 0.28 0.04 0.0040 0.0044 3.92 0.00 0.00 0.00 0.00 0.00 3.92 1683.05 0.35 2315.69 1.12 0.00 0.00 23:30 0.2 0.04 0.28 0.04 0.0040 0.0044 3.92 0.00 0.00 0.00 0.00 0.00 3.92 1683.98 0.35 2319.26 1.13 0.00 0.00 23:45 0.2 0.04 0.28 0.04 0.0040 0.0044 3.92 0.00 0.00 0.00 0.00 0.00 3.92 1684.92 0.35 2322.83 1.13 0.00 0.00 24:00 0.2 0.04 0.28 0.04 0.0040 0.0044 3.92 0.00 0.00 0.00 0.00 0.00 3.92 1685.85 0.35 2326.41 1.13 0.00 0.00 0 0.00 0.28 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1686.79 0.35 2326.05 1.13 0.00 0.00 Total volume (cf)2354.08 Total Overflow (cf)0.00
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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=0.98ac+0.09ac typ street frontage=1.07ac 5/7/2024 LOT 9
Drainage Area (ac.)1.0700 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 AND 0.09AC TYPICAL STREET FRONTAGE Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =3234 s.f.Bot. =1078 s.f.Max. Depth (d)=4 Max. storage=8238.87 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.5472 164.17 0.00 0.00 0.00 0.00 0.00 164.17 1078.00 0.07 164.09 0.08 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.8904 267.13 0.00 0.00 0.00 0.00 0.00 267.13 1120.94 0.08 431.15 0.21 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 0.9841 295.22 0.00 0.00 0.00 0.00 0.00 295.22 1190.83 0.08 726.28 0.35 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 0.9216 276.49 0.00 0.00 0.00 0.00 0.00 276.49 1268.06 0.09 1002.69 0.49 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 1.4521 435.63 0.00 0.00 0.00 0.00 0.00 435.63 1340.39 0.09 1438.22 0.70 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 1.6705 501.15 0.00 0.00 0.00 0.00 0.00 501.15 1454.36 0.10 1939.27 0.94 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 2.0137 604.12 0.00 0.00 0.00 0.00 0.00 604.12 1585.48 0.11 2543.28 1.23 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 2.2009 660.28 0.00 0.00 0.00 0.00 0.00 660.28 1743.54 0.12 3203.44 1.56 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 3.2306 969.19 0.00 0.00 0.00 0.00 0.00 969.19 1916.30 0.13 4172.49 2.03 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 4.8843 1465.30 0.00 0.00 0.00 0.00 0.00 1465.30 2169.89 0.15 5637.64 2.74 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 4.4163 1324.89 0.00 0.00 0.00 0.00 0.00 1324.89 2553.30 0.18 6962.36 3.38 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.7032 210.97 0.00 0.00 0.00 0.00 0.00 210.97 2899.95 0.20 7173.13 3.48 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2955.11 0.21 7172.92 3.48 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2955.06 0.21 7172.72 3.48 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2955.00 0.21 7172.51 3.48 0.00 0.00 Total volume (cf)7174.54 Total Overflow (cf)0.00
643
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0522 15.65 0.00 0.00 0.00 0.00 0.00 15.65 1078.00 0.07 15.58 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0522 15.65 0.00 0.00 0.00 0.00 0.00 15.65 1082.08 0.08 31.16 0.02 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0441 13.24 0.00 0.00 0.00 0.00 0.00 13.24 1086.15 0.08 44.33 0.02 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0602 18.06 0.00 0.00 0.00 0.00 0.00 18.06 1089.60 0.08 62.31 0.03 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0602 18.06 0.00 0.00 0.00 0.00 0.00 18.06 1094.31 0.08 80.30 0.04 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.1152 34.55 0.00 0.00 0.00 0.00 0.00 34.55 1099.01 0.08 114.77 0.06 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0602 18.06 0.00 0.00 0.00 0.00 0.00 18.06 1108.03 0.08 132.76 0.06 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.1152 34.55 0.00 0.00 0.00 0.00 0.00 34.55 1112.74 0.08 167.23 0.08 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.1152 34.55 0.00 0.00 0.00 0.00 0.00 34.55 1121.76 0.08 201.71 0.10 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0602 18.06 0.00 0.00 0.00 0.00 0.00 18.06 1130.79 0.08 219.69 0.11 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0642 19.27 0.00 0.00 0.00 0.00 0.00 19.27 1135.49 0.08 238.88 0.12 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.1152 34.55 0.00 0.00 0.00 0.00 0.00 34.55 1140.51 0.08 273.35 0.13 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.2757 82.72 0.00 0.00 0.00 0.00 0.00 82.72 1149.53 0.08 355.99 0.17 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.2757 82.72 0.00 0.00 0.00 0.00 0.00 82.72 1171.16 0.08 438.63 0.21 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.2757 82.72 0.00 0.00 0.00 0.00 0.00 82.72 1192.78 0.08 521.26 0.25 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.1955 58.64 0.00 0.00 0.00 0.00 0.00 58.64 1214.41 0.08 579.81 0.28 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.4363 130.88 0.00 0.00 0.00 0.00 0.00 130.88 1229.73 0.09 710.61 0.35 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.4764 142.92 0.00 0.00 0.00 0.00 0.00 142.92 1263.96 0.09 853.44 0.41 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.3560 106.80 0.00 0.00 0.00 0.00 0.00 106.80 1301.33 0.09 960.15 0.47 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.4764 142.92 0.00 0.00 0.00 0.00 0.00 142.92 1329.26 0.09 1102.98 0.54 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.7172 215.16 0.00 0.00 0.00 0.00 0.00 215.16 1366.63 0.09 1318.05 0.64 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.6369 191.08 0.00 0.00 0.00 0.00 0.00 191.08 1422.92 0.10 1509.03 0.73 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.5567 167.00 0.00 0.00 0.00 0.00 0.00 167.00 1472.89 0.10 1675.93 0.81 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.5968 179.04 0.00 0.00 0.00 0.00 0.00 179.04 1516.57 0.11 1854.87 0.90 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.6369 191.08 0.00 0.00 0.00 0.00 0.00 191.08 1563.39 0.11 2045.84 0.99 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 1.0784 323.53 0.00 0.00 0.00 0.00 0.00 323.53 1613.37 0.11 2369.26 1.15 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 1.3995 419.86 0.00 0.00 0.00 0.00 0.00 419.86 1698.00 0.12 2789.00 1.35 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.7975 239.25 0.00 0.00 0.00 0.00 0.00 239.25 1807.84 0.13 3028.12 1.47 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 2.1220 636.59 0.00 0.00 0.00 0.00 0.00 636.59 1870.42 0.13 3664.58 1.78 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 2.3226 696.79 0.00 0.00 0.00 0.00 0.00 696.79 2036.97 0.14 4361.23 2.12 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 2.6839 805.16 0.00 0.00 0.00 0.00 0.00 805.16 2219.28 0.15 5166.24 2.51 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 1.7607 528.22 0.00 0.00 0.00 0.00 0.00 528.22 2429.94 0.17 5694.30 2.76 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.1955 58.64 0.00 0.00 0.00 0.00 0.00 58.64 2568.12 0.18 5752.75 2.79 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.1152 34.55 0.00 0.00 0.00 0.00 0.00 34.55 2583.42 0.18 5787.13 2.81 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.1152 34.55 0.00 0.00 0.00 0.00 0.00 34.55 2592.41 0.18 5821.50 2.83 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0241 7.22 0.00 0.00 0.00 0.00 0.00 7.22 2601.41 0.18 5828.55 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2603.25 0.18 5828.36 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2603.20 0.18 5828.18 2.83 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2603.16 0.18 5828.00 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2603.11 0.18 5827.82 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2603.06 0.18 5827.64 2.83 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2603.01 0.18 5827.46 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2602.97 0.18 5827.28 2.83 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2602.92 0.18 5827.10 2.83 0.00 0.00 Total volume (cf)5832.33 Total Overflow (cf)0.00
644

3 of 6
6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0245 7.36 0.00 0.00 0.00 0.00 0.00 7.36 1078.00 0.07 7.29 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0294 8.83 0.00 0.00 0.00 0.00 0.00 8.83 1079.91 0.07 16.04 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0294 8.83 0.00 0.00 0.00 0.00 0.00 8.83 1082.20 0.08 24.80 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0294 8.83 0.00 0.00 0.00 0.00 0.00 8.83 1084.49 0.08 33.56 0.02 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0294 8.83 0.00 0.00 0.00 0.00 0.00 8.83 1086.78 0.08 42.31 0.02 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0343 10.30 0.00 0.00 0.00 0.00 0.00 10.30 1089.07 0.08 52.54 0.03 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0343 10.30 0.00 0.00 0.00 0.00 0.00 10.30 1091.75 0.08 62.77 0.03 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0343 10.30 0.00 0.00 0.00 0.00 0.00 10.30 1094.43 0.08 73.00 0.04 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0343 10.30 0.00 0.00 0.00 0.00 0.00 10.30 1097.10 0.08 83.23 0.04 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0343 10.30 0.00 0.00 0.00 0.00 0.00 10.30 1099.78 0.08 93.46 0.05 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0343 10.30 0.00 0.00 0.00 0.00 0.00 10.30 1102.46 0.08 103.68 0.05 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1105.13 0.08 115.38 0.06 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1108.19 0.08 127.08 0.06 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1111.26 0.08 138.78 0.07 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1114.32 0.08 150.48 0.07 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1117.38 0.08 162.18 0.08 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1120.44 0.08 173.88 0.08 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1123.50 0.08 185.58 0.09 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1126.56 0.08 197.28 0.10 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1129.62 0.08 208.98 0.10 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1132.69 0.08 220.67 0.11 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1135.75 0.08 232.37 0.11 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1138.81 0.08 244.07 0.12 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1141.87 0.08 257.24 0.12 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0393 11.78 0.00 0.00 0.00 0.00 0.00 11.78 1145.32 0.08 268.94 0.13 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1148.38 0.08 282.10 0.14 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1151.82 0.08 295.27 0.14 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1155.27 0.08 308.44 0.15 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1158.71 0.08 321.61 0.16 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1162.16 0.08 334.78 0.16 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1165.61 0.08 347.95 0.17 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0442 13.25 0.00 0.00 0.00 0.00 0.00 13.25 1169.05 0.08 361.11 0.18 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0491 14.72 0.00 0.00 0.00 0.00 0.00 14.72 1172.50 0.08 375.75 0.18 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0491 14.72 0.00 0.00 0.00 0.00 0.00 14.72 1176.33 0.08 390.39 0.19 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0491 14.72 0.00 0.00 0.00 0.00 0.00 14.72 1180.16 0.08 405.03 0.20 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0491 14.72 0.00 0.00 0.00 0.00 0.00 14.72 1183.99 0.08 419.67 0.20 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0491 14.72 0.00 0.00 0.00 0.00 0.00 14.72 1187.82 0.08 434.31 0.21 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0540 16.19 0.00 0.00 0.00 0.00 0.00 16.19 1191.65 0.08 450.42 0.22 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0540 16.19 0.00 0.00 0.00 0.00 0.00 16.19 1195.87 0.08 466.53 0.23 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0540 16.19 0.00 0.00 0.00 0.00 0.00 16.19 1200.08 0.08 482.64 0.23 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0589 17.66 0.00 0.00 0.00 0.00 0.00 17.66 1204.30 0.08 500.22 0.24 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0638 19.14 0.00 0.00 0.00 0.00 0.00 19.14 1208.90 0.08 519.27 0.25 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0797 23.91 0.00 0.00 0.00 0.00 0.00 23.91 1213.89 0.08 543.10 0.26 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0797 23.91 0.00 0.00 0.00 0.00 0.00 23.91 1220.12 0.08 566.92 0.28 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.1288 38.63 0.00 0.00 0.00 0.00 0.00 38.63 1226.36 0.09 605.47 0.29 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.1288 38.63 0.00 0.00 0.00 0.00 0.00 38.63 1236.44 0.09 644.02 0.31 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.1778 53.35 0.00 0.00 0.00 0.00 0.00 53.35 1246.53 0.09 697.29 0.34 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.1778 53.35 0.00 0.00 0.00 0.00 0.00 53.35 1260.47 0.09 750.55 0.36 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.2269 68.07 0.00 0.00 0.00 0.00 0.00 68.07 1274.41 0.09 818.54 0.40 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.2760 82.79 0.00 0.00 0.00 0.00 0.00 82.79 1292.20 0.09 901.24 0.44 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.3251 97.52 0.00 0.00 0.00 0.00 0.00 97.52 1313.84 0.09 998.67 0.48 0.00 0.00 645

5 of 6
24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0044 3.92 0.00 0.00 0.00 0.00 0.00 3.92 1078.00 0.22 3.70 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1078.97 0.22 9.36 0.00 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1080.45 0.23 15.02 0.01 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0087 7.85 0.00 0.00 0.00 0.00 0.00 7.85 1081.93 0.23 22.64 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1083.92 0.23 28.30 0.01 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1085.40 0.23 33.95 0.02 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0065 5.88 0.00 0.00 0.00 0.00 0.00 5.88 1086.89 0.23 39.61 0.02 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0087 7.85 0.00 0.00 0.00 0.00 0.00 7.85 1088.37 0.23 47.23 0.02 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0087 7.85 0.00 0.00 0.00 0.00 0.00 7.85 1090.36 0.23 54.85 0.03 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0087 7.85 0.00 0.00 0.00 0.00 0.00 7.85 1092.35 0.23 62.47 0.03 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0109 9.81 0.00 0.00 0.00 0.00 0.00 9.81 1094.35 0.23 72.05 0.03 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0109 9.81 0.00 0.00 0.00 0.00 0.00 9.81 1096.85 0.23 81.63 0.04 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0109 9.81 0.00 0.00 0.00 0.00 0.00 9.81 1099.36 0.23 91.21 0.04 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0109 9.81 0.00 0.00 0.00 0.00 0.00 9.81 1101.87 0.23 100.78 0.05 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0109 9.81 0.00 0.00 0.00 0.00 0.00 9.81 1104.37 0.23 110.36 0.05 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0131 11.77 0.00 0.00 0.00 0.00 0.00 11.77 1106.88 0.23 121.90 0.06 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0131 11.77 0.00 0.00 0.00 0.00 0.00 11.77 1109.90 0.23 133.44 0.06 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0153 13.73 0.00 0.00 0.00 0.00 0.00 13.73 1112.92 0.23 146.93 0.07 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0153 13.73 0.00 0.00 0.00 0.00 0.00 13.73 1116.45 0.23 160.43 0.08 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0174 15.69 0.00 0.00 0.00 0.00 0.00 15.69 1119.98 0.23 175.89 0.09 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0131 11.77 0.00 0.00 0.00 0.00 0.00 11.77 1124.03 0.23 187.43 0.09 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0153 13.73 0.00 0.00 0.00 0.00 0.00 13.73 1127.05 0.23 200.92 0.10 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0174 15.69 0.00 0.00 0.00 0.00 0.00 15.69 1130.58 0.24 216.38 0.11 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0174 15.69 0.00 0.00 0.00 0.00 0.00 15.69 1134.62 0.24 231.83 0.11 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0196 17.65 0.00 0.00 0.00 0.00 0.00 17.65 1138.67 0.24 249.25 0.12 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0196 17.65 0.00 0.00 0.00 0.00 0.00 17.65 1143.22 0.24 266.66 0.13 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0218 19.61 0.00 0.00 0.00 0.00 0.00 19.61 1147.78 0.24 286.04 0.14 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0218 19.61 0.00 0.00 0.00 0.00 0.00 19.61 1152.85 0.24 305.41 0.15 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0218 19.61 0.00 0.00 0.00 0.00 0.00 19.61 1157.92 0.24 324.79 0.16 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0240 21.58 0.00 0.00 0.00 0.00 0.00 21.58 1162.99 0.24 346.12 0.17 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0262 23.54 0.00 0.00 0.00 0.00 0.00 23.54 1168.58 0.24 369.42 0.18 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0283 25.50 0.00 0.00 0.00 0.00 0.00 25.50 1174.67 0.24 394.67 0.19 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0327 29.42 0.00 0.00 0.00 0.00 0.00 29.42 1181.28 0.25 423.85 0.21 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0327 29.42 0.00 0.00 0.00 0.00 0.00 29.42 1188.91 0.25 453.02 0.22 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0349 31.38 0.00 0.00 0.00 0.00 0.00 31.38 1196.55 0.25 484.15 0.24 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0370 33.34 0.00 0.00 0.00 0.00 0.00 33.34 1204.70 0.25 517.25 0.25 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0414 37.27 0.00 0.00 0.00 0.00 0.00 37.27 1213.36 0.25 554.26 0.27 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0436 39.23 0.00 0.00 0.00 0.00 0.00 39.23 1223.04 0.25 593.24 0.29 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0458 41.19 0.00 0.00 0.00 0.00 0.00 41.19 1233.24 0.26 634.17 0.31 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0479 43.15 0.00 0.00 0.00 0.00 0.00 43.15 1243.95 0.26 677.07 0.33 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0327 29.42 0.00 0.00 0.00 0.00 0.00 29.42 1255.18 0.26 706.23 0.34 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0327 29.42 0.00 0.00 0.00 0.00 0.00 29.42 1262.81 0.26 735.38 0.36 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0436 39.23 0.00 0.00 0.00 0.00 0.00 39.23 1270.44 0.26 774.35 0.38 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0436 39.23 0.00 0.00 0.00 0.00 0.00 39.23 1280.64 0.27 813.31 0.39 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0414 37.27 0.00 0.00 0.00 0.00 0.00 37.27 1290.83 0.27 850.31 0.41 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0414 37.27 0.00 0.00 0.00 0.00 0.00 37.27 1300.51 0.27 887.31 0.43 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0370 33.34 0.00 0.00 0.00 0.00 0.00 33.34 1310.20 0.27 920.38 0.45 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0392 35.31 0.00 0.00 0.00 0.00 0.00 35.31 1318.85 0.27 955.41 0.46 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0545 49.04 0.00 0.00 0.00 0.00 0.00 49.04 1328.02 0.28 1004.17 0.49 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0567 51.00 0.00 0.00 0.00 0.00 0.00 51.00 1340.78 0.28 1054.89 0.51 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0671 60.43 0.00 0.00 0.00 0.00 0.00 60.43 1354.05 0.28 1115.04 0.54 0.00 0.00 647

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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=0.41ac+0.09ac typ street frontage=0.50ac

1.14 5/7/2024 LOT 10-FRONT
Drainage Area (ac.)0.5000 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 AND 0.09AC TYPICAL STREET FRONTAGE Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =2118 s.f.Bot. =756 s.f.Max. Depth (d)=3 Max. storage=4139.39 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.2557 76.71 0.00 0.00 0.00 0.00 0.00 76.71 756.00 0.05 76.66 0.06 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.4161 124.83 0.00 0.00 0.00 0.00 0.00 124.83 781.22 0.05 201.44 0.15 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 0.4598 137.95 0.00 0.00 0.00 0.00 0.00 137.95 822.28 0.06 339.33 0.25 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 0.4307 129.20 0.00 0.00 0.00 0.00 0.00 129.20 867.65 0.06 468.47 0.34 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 0.6785 203.56 0.00 0.00 0.00 0.00 0.00 203.56 910.14 0.06 671.97 0.49 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 0.7806 234.18 0.00 0.00 0.00 0.00 0.00 234.18 977.10 0.07 906.09 0.66 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 0.9410 282.30 0.00 0.00 0.00 0.00 0.00 282.30 1054.13 0.07 1188.31 0.86 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 1.0285 308.54 0.00 0.00 0.00 0.00 0.00 308.54 1147.00 0.08 1496.78 1.08 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 1.5096 452.89 0.00 0.00 0.00 0.00 0.00 452.89 1248.49 0.09 1949.58 1.41 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 2.2824 684.72 0.00 0.00 0.00 0.00 0.00 684.72 1397.48 0.10 2634.20 1.91 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 2.0637 619.11 0.00 0.00 0.00 0.00 0.00 619.11 1622.74 0.11 3253.20 2.36 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.3286 98.58 0.00 0.00 0.00 0.00 0.00 98.58 1826.41 0.13 3351.66 2.43 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1858.81 0.13 3351.53 2.43 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1858.77 0.13 3351.40 2.43 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1858.72 0.13 3351.27 2.43 0.00 0.00 Total volume (cf)3352.59 Total Overflow (cf)0.00
649
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0244 7.31 0.00 0.00 0.00 0.00 0.00 7.31 756.00 0.05 7.26 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0244 7.31 0.00 0.00 0.00 0.00 0.00 7.31 758.39 0.05 14.52 0.01 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 760.78 0.05 20.66 0.01 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0281 8.44 0.00 0.00 0.00 0.00 0.00 8.44 762.80 0.05 29.05 0.02 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0281 8.44 0.00 0.00 0.00 0.00 0.00 8.44 765.56 0.05 37.43 0.03 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 768.32 0.05 53.53 0.04 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0281 8.44 0.00 0.00 0.00 0.00 0.00 8.44 773.61 0.05 61.91 0.04 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 776.37 0.05 78.01 0.06 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 781.67 0.05 94.10 0.07 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0281 8.44 0.00 0.00 0.00 0.00 0.00 8.44 786.96 0.05 102.48 0.07 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0300 9.00 0.00 0.00 0.00 0.00 0.00 9.00 789.72 0.05 111.43 0.08 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 792.66 0.06 127.52 0.09 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.1288 38.65 0.00 0.00 0.00 0.00 0.00 38.65 797.96 0.06 166.12 0.12 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.1288 38.65 0.00 0.00 0.00 0.00 0.00 38.65 810.66 0.06 204.72 0.15 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.1288 38.65 0.00 0.00 0.00 0.00 0.00 38.65 823.36 0.06 243.31 0.18 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.0913 27.40 0.00 0.00 0.00 0.00 0.00 27.40 836.06 0.06 270.65 0.20 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.2039 61.16 0.00 0.00 0.00 0.00 0.00 61.16 845.05 0.06 331.75 0.24 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.2226 66.79 0.00 0.00 0.00 0.00 0.00 66.79 865.16 0.06 398.48 0.29 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.1664 49.91 0.00 0.00 0.00 0.00 0.00 49.91 887.11 0.06 448.32 0.32 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.2226 66.79 0.00 0.00 0.00 0.00 0.00 66.79 903.51 0.06 515.05 0.37 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.3351 100.54 0.00 0.00 0.00 0.00 0.00 100.54 925.47 0.06 615.53 0.45 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.2976 89.29 0.00 0.00 0.00 0.00 0.00 89.29 958.53 0.07 704.75 0.51 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.2601 78.04 0.00 0.00 0.00 0.00 0.00 78.04 987.89 0.07 782.72 0.57 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.2789 83.66 0.00 0.00 0.00 0.00 0.00 83.66 1013.54 0.07 866.32 0.63 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.2976 89.29 0.00 0.00 0.00 0.00 0.00 89.29 1041.05 0.07 955.53 0.69 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 0.5039 151.18 0.00 0.00 0.00 0.00 0.00 151.18 1070.40 0.07 1106.64 0.80 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 0.6540 196.19 0.00 0.00 0.00 0.00 0.00 196.19 1120.12 0.08 1302.76 0.94 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.3727 111.80 0.00 0.00 0.00 0.00 0.00 111.80 1184.65 0.08 1414.48 1.03 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 0.9916 297.47 0.00 0.00 0.00 0.00 0.00 297.47 1221.41 0.08 1711.86 1.24 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 1.0853 325.60 0.00 0.00 0.00 0.00 0.00 325.60 1319.26 0.09 2037.38 1.48 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 1.2541 376.24 0.00 0.00 0.00 0.00 0.00 376.24 1426.37 0.10 2413.52 1.75 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 0.8228 246.83 0.00 0.00 0.00 0.00 0.00 246.83 1550.13 0.11 2660.24 1.93 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.0913 27.40 0.00 0.00 0.00 0.00 0.00 27.40 1631.31 0.11 2687.53 1.95 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 1640.29 0.11 2703.56 1.96 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 1645.56 0.11 2719.60 1.97 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0113 3.38 0.00 0.00 0.00 0.00 0.00 3.38 1650.84 0.11 2722.86 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.91 0.11 2722.74 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.88 0.11 2722.63 1.97 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.84 0.11 2722.51 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.80 0.11 2722.40 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.76 0.11 2722.28 1.97 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.72 0.11 2722.17 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.69 0.11 2722.05 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.65 0.11 2721.94 1.97 0.00 0.00 Total volume (cf)2725.39 Total Overflow (cf)0.00
650

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6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0115 3.44 0.00 0.00 0.00 0.00 0.00 3.44 756.00 0.05 3.39 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0138 4.13 0.00 0.00 0.00 0.00 0.00 4.13 757.11 0.05 7.46 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0138 4.13 0.00 0.00 0.00 0.00 0.00 4.13 758.46 0.05 11.54 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0138 4.13 0.00 0.00 0.00 0.00 0.00 4.13 759.80 0.05 15.61 0.01 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0138 4.13 0.00 0.00 0.00 0.00 0.00 4.13 761.14 0.05 19.69 0.01 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 762.48 0.05 24.45 0.02 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 764.04 0.05 29.21 0.02 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 765.61 0.05 33.97 0.02 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 767.18 0.05 38.73 0.03 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 768.74 0.05 43.50 0.03 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 770.31 0.05 48.26 0.03 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 771.88 0.05 53.71 0.04 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 773.67 0.05 59.16 0.04 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 775.46 0.05 64.61 0.05 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 777.26 0.05 70.05 0.05 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 779.05 0.05 75.50 0.05 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 780.84 0.05 80.95 0.06 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 782.64 0.05 86.40 0.06 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 784.43 0.05 91.85 0.07 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 786.22 0.05 97.30 0.07 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 788.01 0.05 102.75 0.07 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 789.81 0.05 108.19 0.08 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 791.60 0.05 113.64 0.08 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 793.39 0.06 119.78 0.09 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 795.41 0.06 125.23 0.09 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 797.20 0.06 131.36 0.10 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 799.22 0.06 137.50 0.10 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 801.24 0.06 143.63 0.10 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 803.26 0.06 149.77 0.11 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 805.28 0.06 155.90 0.11 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 807.30 0.06 162.04 0.12 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 809.32 0.06 168.17 0.12 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 811.33 0.06 175.00 0.13 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 813.58 0.06 181.82 0.13 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 815.82 0.06 188.64 0.14 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 818.07 0.06 195.46 0.14 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 820.31 0.06 202.28 0.15 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0252 7.57 0.00 0.00 0.00 0.00 0.00 7.57 822.56 0.06 209.79 0.15 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0252 7.57 0.00 0.00 0.00 0.00 0.00 7.57 825.03 0.06 217.30 0.16 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0252 7.57 0.00 0.00 0.00 0.00 0.00 7.57 827.50 0.06 224.81 0.16 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0275 8.25 0.00 0.00 0.00 0.00 0.00 8.25 829.97 0.06 233.01 0.17 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0298 8.94 0.00 0.00 0.00 0.00 0.00 8.94 832.67 0.06 241.89 0.18 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0372 11.17 0.00 0.00 0.00 0.00 0.00 11.17 835.59 0.06 253.01 0.18 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0372 11.17 0.00 0.00 0.00 0.00 0.00 11.17 839.25 0.06 264.12 0.19 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.0602 18.05 0.00 0.00 0.00 0.00 0.00 18.05 842.91 0.06 282.12 0.20 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.0602 18.05 0.00 0.00 0.00 0.00 0.00 18.05 848.83 0.06 300.11 0.22 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.0831 24.93 0.00 0.00 0.00 0.00 0.00 24.93 854.75 0.06 324.98 0.24 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.0831 24.93 0.00 0.00 0.00 0.00 0.00 24.93 862.93 0.06 349.86 0.25 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.1060 31.81 0.00 0.00 0.00 0.00 0.00 31.81 871.11 0.06 381.61 0.28 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.1290 38.69 0.00 0.00 0.00 0.00 0.00 38.69 881.56 0.06 420.23 0.30 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.1519 45.57 0.00 0.00 0.00 0.00 0.00 45.57 894.27 0.06 465.74 0.34 0.00 0.00 651

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4:20 2 0.91 0.56 N/A 0.3468 0.1748 52.45 0.00 0.00 0.00 0.00 0.00 52.45 909.24 0.06 518.12 0.38 0.00 0.00 4:25 2.1 0.96 0.56 N/A 0.3922 0.1978 59.33 0.00 0.00 0.00 0.00 0.00 59.33 926.48 0.06 577.38 0.42 0.00 0.00 4:30 2.1 0.96 0.56 N/A 0.3922 0.1978 59.33 0.00 0.00 0.00 0.00 0.00 59.33 945.98 0.07 636.64 0.46 0.00 0.00 4:35 2.2 1.00 0.56 N/A 0.4377 0.2207 66.20 0.00 0.00 0.00 0.00 0.00 66.20 965.48 0.07 702.78 0.51 0.00 0.00 4:40 2.3 1.05 0.56 N/A 0.4832 0.2436 73.08 0.00 0.00 0.00 0.00 0.00 73.08 987.24 0.07 775.80 0.56 0.00 0.00 4:45 2.4 1.09 0.56 N/A 0.5287 0.2665 79.96 0.00 0.00 0.00 0.00 0.00 79.96 1011.26 0.07 855.69 0.62 0.00 0.00 4:50 2.4 1.09 0.56 N/A 0.5287 0.2665 79.96 0.00 0.00 0.00 0.00 0.00 79.96 1037.55 0.07 935.58 0.68 0.00 0.00 4:55 2.5 1.14 0.56 N/A 0.5742 0.2895 86.84 0.00 0.00 0.00 0.00 0.00 86.84 1063.84 0.07 1022.35 0.74 0.00 0.00 5:00 2.6 1.18 0.56 N/A 0.6196 0.3124 93.72 0.00 0.00 0.00 0.00 0.00 93.72 1092.39 0.08 1115.99 0.81 0.00 0.00 5:05 3.1 1.41 0.56 N/A 0.8470 0.4270 128.11 0.00 0.00 0.00 0.00 0.00 128.11 1123.20 0.08 1244.03 0.90 0.00 0.00 5:10 3.6 1.64 0.56 N/A 1.0744 0.5417 162.51 0.00 0.00 0.00 0.00 0.00 162.51 1165.33 0.08 1406.45 1.02 0.00 0.00 5:15 3.9 1.77 0.56 N/A 1.2109 0.6105 183.14 0.00 0.00 0.00 0.00 0.00 183.14 1218.77 0.08 1589.51 1.15 0.00 0.00 5:20 4.2 1.91 0.56 N/A 1.3473 0.6793 203.78 0.00 0.00 0.00 0.00 0.00 203.78 1279.00 0.09 1793.21 1.30 0.00 0.00 5:25 4.7 2.14 0.56 N/A 1.5747 0.7939 238.18 0.00 0.00 0.00 0.00 0.00 238.18 1346.03 0.09 2031.29 1.47 0.00 0.00 5:30 5.6 2.55 0.56 N/A 1.9840 1.0003 300.09 0.00 0.00 0.00 0.00 0.00 300.09 1424.36 0.10 2331.28 1.69 0.00 0.00 5:35 1.9 0.86 0.56 N/A 0.3013 0.1519 45.57 0.00 0.00 0.00 0.00 0.00 45.57 1523.07 0.11 2376.74 1.72 0.00 0.00 5:40 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 1538.03 0.11 2382.82 1.73 0.00 0.00 5:45 0.6 0.27 0.56 0.25 0.0273 0.0138 4.13 0.00 0.00 0.00 0.00 0.00 4.13 1540.03 0.11 2386.84 1.73 0.00 0.00 5:50 0.5 0.23 0.56 0.20 0.0227 0.0115 3.44 0.00 0.00 0.00 0.00 0.00 3.44 1541.35 0.11 2390.18 1.73 0.00 0.00 5:55 0.3 0.14 0.56 0.12 0.0136 0.0069 2.06 0.00 0.00 0.00 0.00 0.00 2.06 1542.45 0.11 2392.13 1.73 0.00 0.00 6:00 0.2 0.09 0.56 0.08 0.0091 0.0046 1.38 0.00 0.00 0.00 0.00 0.00 1.38 1543.09 0.11 2393.40 1.73 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1543.51 0.11 2393.29 1.73 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1543.48 0.11 2393.19 1.73 0.00 0.00 6:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1543.44 0.11 2393.08 1.73 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1543.40 0.11 2392.97 1.73 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1543.37 0.11 2392.86 1.73 0.00 0.00 6:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1543.33 0.11 2392.76 1.73 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1543.30 0.11 2392.65 1.73 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1543.26 0.11 2392.54 1.73 0.00 0.00 6:45 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1543.23 0.11 2392.44 1.73 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1543.19 0.11 2392.33 1.73 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1543.16 0.11 2392.22 1.73 0.00 0.00 7:00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1543.12 0.11 2392.11 1.73 0.00 0.00 Total volume (cf)2398.03 Total Overflow (cf)0.00
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24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 756.00 0.16 1.68 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 756.55 0.16 4.27 0.00 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 757.40 0.16 6.86 0.00 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 758.26 0.16 10.37 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 759.41 0.16 12.96 0.01 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 760.26 0.16 15.55 0.01 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 761.12 0.16 18.14 0.01 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 761.97 0.16 21.65 0.02 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 763.12 0.16 25.16 0.02 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 764.28 0.16 28.66 0.02 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 765.43 0.16 33.09 0.02 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 766.89 0.16 37.51 0.03 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 768.34 0.16 41.93 0.03 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 769.80 0.16 46.36 0.03 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 771.25 0.16 50.78 0.04 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0061 5.50 0.00 0.00 0.00 0.00 0.00 5.50 772.71 0.16 56.12 0.04 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0061 5.50 0.00 0.00 0.00 0.00 0.00 5.50 774.46 0.16 61.45 0.04 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0071 6.42 0.00 0.00 0.00 0.00 0.00 6.42 776.22 0.16 67.71 0.05 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0071 6.42 0.00 0.00 0.00 0.00 0.00 6.42 778.28 0.16 73.96 0.05 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0081 7.33 0.00 0.00 0.00 0.00 0.00 7.33 780.34 0.16 81.13 0.06 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0061 5.50 0.00 0.00 0.00 0.00 0.00 5.50 782.70 0.16 86.47 0.06 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0071 6.42 0.00 0.00 0.00 0.00 0.00 6.42 784.45 0.16 92.72 0.07 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0081 7.33 0.00 0.00 0.00 0.00 0.00 7.33 786.51 0.16 99.89 0.07 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0081 7.33 0.00 0.00 0.00 0.00 0.00 7.33 788.87 0.16 107.06 0.08 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0092 8.25 0.00 0.00 0.00 0.00 0.00 8.25 791.23 0.16 115.14 0.08 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0092 8.25 0.00 0.00 0.00 0.00 0.00 8.25 793.89 0.17 123.23 0.09 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 796.55 0.17 132.23 0.10 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 799.51 0.17 141.23 0.10 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 802.47 0.17 150.22 0.11 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0112 10.08 0.00 0.00 0.00 0.00 0.00 10.08 805.43 0.17 160.14 0.12 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0122 11.00 0.00 0.00 0.00 0.00 0.00 11.00 808.69 0.17 170.97 0.12 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0132 11.92 0.00 0.00 0.00 0.00 0.00 11.92 812.25 0.17 182.72 0.13 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 816.12 0.17 196.29 0.14 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 820.59 0.17 209.87 0.15 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0163 14.67 0.00 0.00 0.00 0.00 0.00 14.67 825.06 0.17 224.37 0.16 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0173 15.58 0.00 0.00 0.00 0.00 0.00 15.58 829.82 0.17 239.77 0.17 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0193 17.41 0.00 0.00 0.00 0.00 0.00 17.41 834.89 0.17 257.02 0.19 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 840.57 0.18 275.17 0.20 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0214 19.25 0.00 0.00 0.00 0.00 0.00 19.25 846.54 0.18 294.24 0.21 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0224 20.16 0.00 0.00 0.00 0.00 0.00 20.16 852.82 0.18 314.23 0.23 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 859.39 0.18 327.80 0.24 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 863.86 0.18 341.37 0.25 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 868.32 0.18 359.52 0.26 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 874.29 0.18 377.67 0.27 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0193 17.41 0.00 0.00 0.00 0.00 0.00 17.41 880.27 0.18 394.90 0.29 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0193 17.41 0.00 0.00 0.00 0.00 0.00 17.41 885.94 0.18 412.13 0.30 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0173 15.58 0.00 0.00 0.00 0.00 0.00 15.58 891.60 0.19 427.53 0.31 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0183 16.50 0.00 0.00 0.00 0.00 0.00 16.50 896.67 0.19 443.84 0.32 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0255 22.91 0.00 0.00 0.00 0.00 0.00 22.91 902.04 0.19 466.56 0.34 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0265 23.83 0.00 0.00 0.00 0.00 0.00 23.83 909.52 0.19 490.21 0.36 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0314 28.24 0.00 0.00 0.00 0.00 0.00 28.24 917.29 0.19 518.25 0.38 0.00 0.00 653

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13:00 2.9 0.59 0.50 N/A 0.0900 0.0454 40.85 0.00 0.00 0.00 0.00 0.00 40.85 926.52 0.19 558.91 0.41 0.00 0.00 13:15 3.4 0.69 0.49 N/A 0.1985 0.1001 90.08 0.00 0.00 0.00 0.00 0.00 90.08 939.90 0.20 648.80 0.47 0.00 0.00 13:30 3.4 0.69 0.48 N/A 0.2059 0.1038 93.45 0.00 0.00 0.00 0.00 0.00 93.45 969.48 0.20 742.04 0.54 0.00 0.00 13:45 2.3 0.46 0.47 0.42 0.0465 0.0234 21.08 0.00 0.00 0.00 0.00 0.00 21.08 1000.16 0.21 762.91 0.55 0.00 0.00 14:00 2.3 0.46 0.47 0.42 0.0465 0.0234 21.08 0.00 0.00 0.00 0.00 0.00 21.08 1007.02 0.21 783.78 0.57 0.00 0.00 14:15 2.7 0.55 0.46 N/A 0.0862 0.0435 39.11 0.00 0.00 0.00 0.00 0.00 39.11 1013.89 0.21 822.68 0.60 0.00 0.00 14:30 2.6 0.53 0.45 N/A 0.0730 0.0368 33.12 0.00 0.00 0.00 0.00 0.00 33.12 1026.69 0.21 855.59 0.62 0.00 0.00 14:45 2.6 0.53 0.45 N/A 0.0799 0.0403 36.26 0.00 0.00 0.00 0.00 0.00 36.26 1037.52 0.22 891.63 0.65 0.00 0.00 15:00 2.5 0.51 0.44 N/A 0.0665 0.0335 30.19 0.00 0.00 0.00 0.00 0.00 30.19 1049.38 0.22 921.60 0.67 0.00 0.00 15:15 2.4 0.48 0.43 N/A 0.0530 0.0267 24.07 0.00 0.00 0.00 0.00 0.00 24.07 1059.24 0.22 945.45 0.69 0.00 0.00 15:30 2.3 0.46 0.43 0.42 0.0465 0.0234 21.08 0.00 0.00 0.00 0.00 0.00 21.08 1067.08 0.22 966.30 0.70 0.00 0.00 15:45 1.9 0.38 0.42 0.35 0.0384 0.0193 17.41 0.00 0.00 0.00 0.00 0.00 17.41 1073.95 0.22 983.50 0.71 0.00 0.00 16:00 1.9 0.38 0.41 0.35 0.0384 0.0193 17.41 0.00 0.00 0.00 0.00 0.00 17.41 1079.60 0.22 1000.69 0.73 0.00 0.00 16:15 0.4 0.08 0.41 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 1085.26 0.23 1004.13 0.73 0.00 0.00 16:30 0.4 0.08 0.40 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 1086.39 0.23 1007.57 0.73 0.00 0.00 16:45 0.3 0.06 0.39 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 1087.52 0.23 1010.09 0.73 0.00 0.00 17:00 0.3 0.06 0.39 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 1088.35 0.23 1012.61 0.73 0.00 0.00 17:15 0.5 0.10 0.38 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1089.18 0.23 1016.97 0.74 0.00 0.00 17:30 0.5 0.10 0.38 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1090.62 0.23 1021.32 0.74 0.00 0.00 17:45 0.5 0.10 0.37 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 1092.05 0.23 1025.68 0.74 0.00 0.00 18:00 0.4 0.08 0.37 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 1093.48 0.23 1029.12 0.75 0.00 0.00 18:15 0.4 0.08 0.36 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 1094.61 0.23 1032.56 0.75 0.00 0.00 18:30 0.4 0.08 0.35 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 1095.75 0.23 1035.99 0.75 0.00 0.00 18:45 0.3 0.06 0.35 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 1096.88 0.23 1038.51 0.75 0.00 0.00 19:00 0.2 0.04 0.34 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 1097.71 0.23 1040.12 0.75 0.00 0.00 19:15 0.3 0.06 0.34 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 1098.23 0.23 1042.64 0.76 0.00 0.00 19:30 0.4 0.08 0.34 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 1099.06 0.23 1046.08 0.76 0.00 0.00 19:45 0.3 0.06 0.33 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 1100.20 0.23 1048.60 0.76 0.00 0.00 20:00 0.2 0.04 0.33 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 1101.02 0.23 1050.20 0.76 0.00 0.00 20:15 0.3 0.06 0.32 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 1101.55 0.23 1052.72 0.76 0.00 0.00 20:30 0.3 0.06 0.32 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 1102.38 0.23 1055.24 0.76 0.00 0.00 20:45 0.3 0.06 0.31 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 1103.21 0.23 1057.76 0.77 0.00 0.00 21:00 0.2 0.04 0.31 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 1104.04 0.23 1059.37 0.77 0.00 0.00 21:15 0.3 0.06 0.31 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 1104.57 0.23 1061.88 0.77 0.00 0.00 21:30 0.2 0.04 0.30 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 1105.40 0.23 1063.49 0.77 0.00 0.00 21:45 0.3 0.06 0.30 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 1105.92 0.23 1066.01 0.77 0.00 0.00 22:00 0.2 0.04 0.30 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 1106.75 0.23 1067.61 0.77 0.00 0.00 22:15 0.3 0.06 0.29 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 1107.28 0.23 1070.13 0.78 0.00 0.00 22:30 0.2 0.04 0.29 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 1108.11 0.23 1071.73 0.78 0.00 0.00 22:45 0.2 0.04 0.29 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 1108.64 0.23 1073.33 0.78 0.00 0.00 23:00 0.2 0.04 0.29 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 1109.16 0.23 1074.94 0.78 0.00 0.00 23:15 0.2 0.04 0.28 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 1109.69 0.23 1076.54 0.78 0.00 0.00 23:30 0.2 0.04 0.28 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 1110.22 0.23 1078.14 0.78 0.00 0.00 23:45 0.2 0.04 0.28 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 1110.74 0.23 1079.74 0.78 0.00 0.00 24:00 0.2 0.04 0.28 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 1111.27 0.23 1081.34 0.78 0.00 0.00 0 0.00 0.28 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1111.80 0.23 1081.11 0.78 0.00 0.00 Total volume (cf)1100.04 Total Overflow (cf)0.00
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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=0.73ac
5/7/2024 LOT 10-BACK
Drainage Area (ac.)0.7300 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =2400 s.f.Bot. =623 s.f.Max. Depth (d)=4 Max. storage=5661.04 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.3733 112.00 0.00 0.00 0.00 0.00 0.00 112.00 623.00 0.04 111.96 0.08 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.6075 182.25 0.00 0.00 0.00 0.00 0.00 182.25 658.14 0.05 294.16 0.21 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 0.6714 201.41 0.00 0.00 0.00 0.00 0.00 201.41 715.34 0.05 495.52 0.35 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 0.6288 188.64 0.00 0.00 0.00 0.00 0.00 188.64 778.54 0.05 684.11 0.48 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 0.9907 297.20 0.00 0.00 0.00 0.00 0.00 297.20 837.74 0.06 981.25 0.69 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 1.1397 341.91 0.00 0.00 0.00 0.00 0.00 341.91 931.01 0.06 1323.09 0.93 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 1.3739 412.16 0.00 0.00 0.00 0.00 0.00 412.16 1038.32 0.07 1735.18 1.23 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 1.5016 450.47 0.00 0.00 0.00 0.00 0.00 450.47 1167.67 0.08 2185.57 1.54 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 2.2041 661.22 0.00 0.00 0.00 0.00 0.00 661.22 1309.05 0.09 2846.70 2.01 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 3.3323 999.69 0.00 0.00 0.00 0.00 0.00 999.69 1516.58 0.11 3846.28 2.72 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 3.0130 903.90 0.00 0.00 0.00 0.00 0.00 903.90 1830.35 0.13 4750.05 3.36 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.4798 143.93 0.00 0.00 0.00 0.00 0.00 143.93 2114.04 0.15 4893.84 3.46 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2159.17 0.15 4893.69 3.46 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2159.13 0.15 4893.54 3.46 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2159.08 0.15 4893.39 3.46 0.00 0.00 Total volume (cf)4894.78 Total Overflow (cf)0.00
655
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0356 10.68 0.00 0.00 0.00 0.00 0.00 10.68 623.00 0.04 10.64 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0356 10.68 0.00 0.00 0.00 0.00 0.00 10.68 626.34 0.04 21.27 0.02 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0301 9.04 0.00 0.00 0.00 0.00 0.00 9.04 629.68 0.04 30.26 0.02 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0411 12.32 0.00 0.00 0.00 0.00 0.00 12.32 632.50 0.04 42.54 0.03 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0411 12.32 0.00 0.00 0.00 0.00 0.00 12.32 636.35 0.04 54.82 0.04 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.0786 23.57 0.00 0.00 0.00 0.00 0.00 23.57 640.21 0.04 78.35 0.06 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0411 12.32 0.00 0.00 0.00 0.00 0.00 12.32 647.59 0.04 90.63 0.06 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.0786 23.57 0.00 0.00 0.00 0.00 0.00 23.57 651.45 0.05 114.16 0.08 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.0786 23.57 0.00 0.00 0.00 0.00 0.00 23.57 658.83 0.05 137.68 0.10 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0411 12.32 0.00 0.00 0.00 0.00 0.00 12.32 666.22 0.05 149.96 0.11 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0438 13.14 0.00 0.00 0.00 0.00 0.00 13.14 670.07 0.05 163.06 0.12 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.0786 23.57 0.00 0.00 0.00 0.00 0.00 23.57 674.18 0.05 186.58 0.13 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.1881 56.43 0.00 0.00 0.00 0.00 0.00 56.43 681.57 0.05 242.97 0.17 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.1881 56.43 0.00 0.00 0.00 0.00 0.00 56.43 699.27 0.05 299.36 0.21 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.1881 56.43 0.00 0.00 0.00 0.00 0.00 56.43 716.97 0.05 355.74 0.25 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.1333 40.00 0.00 0.00 0.00 0.00 0.00 40.00 734.67 0.05 395.69 0.28 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.2976 89.29 0.00 0.00 0.00 0.00 0.00 89.29 747.21 0.05 484.93 0.34 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.3250 97.51 0.00 0.00 0.00 0.00 0.00 97.51 775.22 0.05 582.38 0.41 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.2429 72.86 0.00 0.00 0.00 0.00 0.00 72.86 805.81 0.06 655.19 0.46 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.3250 97.51 0.00 0.00 0.00 0.00 0.00 97.51 828.66 0.06 752.64 0.53 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.4893 146.79 0.00 0.00 0.00 0.00 0.00 146.79 859.25 0.06 899.37 0.64 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.4346 130.37 0.00 0.00 0.00 0.00 0.00 130.37 905.31 0.06 1029.68 0.73 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.3798 113.94 0.00 0.00 0.00 0.00 0.00 113.94 946.22 0.07 1143.55 0.81 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.4072 122.15 0.00 0.00 0.00 0.00 0.00 122.15 981.96 0.07 1265.63 0.89 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.4346 130.37 0.00 0.00 0.00 0.00 0.00 130.37 1020.28 0.07 1395.92 0.99 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 0.7358 220.73 0.00 0.00 0.00 0.00 0.00 220.73 1061.18 0.07 1616.58 1.14 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 0.9548 286.44 0.00 0.00 0.00 0.00 0.00 286.44 1130.44 0.08 1902.94 1.34 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.5441 163.22 0.00 0.00 0.00 0.00 0.00 163.22 1220.33 0.08 2066.08 1.46 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 1.4477 434.31 0.00 0.00 0.00 0.00 0.00 434.31 1271.54 0.09 2500.30 1.77 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 1.5846 475.38 0.00 0.00 0.00 0.00 0.00 475.38 1407.84 0.10 2975.59 2.10 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 1.8310 549.31 0.00 0.00 0.00 0.00 0.00 549.31 1557.04 0.11 3524.79 2.49 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 1.2013 360.38 0.00 0.00 0.00 0.00 0.00 360.38 1729.43 0.12 3885.05 2.75 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.1333 40.00 0.00 0.00 0.00 0.00 0.00 40.00 1842.52 0.13 3924.93 2.77 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.0786 23.57 0.00 0.00 0.00 0.00 0.00 23.57 1855.03 0.13 3948.37 2.79 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.0786 23.57 0.00 0.00 0.00 0.00 0.00 23.57 1862.39 0.13 3971.82 2.81 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0164 4.93 0.00 0.00 0.00 0.00 0.00 4.93 1869.75 0.13 3976.62 2.81 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1871.26 0.13 3976.49 2.81 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1871.22 0.13 3976.36 2.81 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1871.18 0.13 3976.23 2.81 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1871.14 0.13 3976.10 2.81 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1871.10 0.13 3975.97 2.81 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1871.05 0.13 3975.84 2.81 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1871.01 0.13 3975.71 2.81 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1870.97 0.13 3975.58 2.81 0.00 0.00 Total volume (cf)3979.07 Total Overflow (cf)0.00
656

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6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0167 5.02 0.00 0.00 0.00 0.00 0.00 5.02 623.00 0.04 4.98 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0201 6.03 0.00 0.00 0.00 0.00 0.00 6.03 624.56 0.04 10.96 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0201 6.03 0.00 0.00 0.00 0.00 0.00 6.03 626.44 0.04 16.94 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0201 6.03 0.00 0.00 0.00 0.00 0.00 6.03 628.32 0.04 22.93 0.02 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0201 6.03 0.00 0.00 0.00 0.00 0.00 6.03 630.20 0.04 28.91 0.02 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0234 7.03 0.00 0.00 0.00 0.00 0.00 7.03 632.07 0.04 35.89 0.03 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0234 7.03 0.00 0.00 0.00 0.00 0.00 7.03 634.27 0.04 42.88 0.03 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0234 7.03 0.00 0.00 0.00 0.00 0.00 7.03 636.46 0.04 49.87 0.04 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0234 7.03 0.00 0.00 0.00 0.00 0.00 7.03 638.65 0.04 56.85 0.04 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0234 7.03 0.00 0.00 0.00 0.00 0.00 7.03 640.85 0.04 63.84 0.05 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0234 7.03 0.00 0.00 0.00 0.00 0.00 7.03 643.04 0.04 70.82 0.05 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0268 8.03 0.00 0.00 0.00 0.00 0.00 8.03 645.23 0.04 78.81 0.06 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0268 8.03 0.00 0.00 0.00 0.00 0.00 8.03 647.74 0.04 86.80 0.06 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0268 8.03 0.00 0.00 0.00 0.00 0.00 8.03 650.25 0.05 94.79 0.07 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0268 8.03 0.00 0.00 0.00 0.00 0.00 8.03 652.76 0.05 102.78 0.07 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0268 8.03 0.00 0.00 0.00 0.00 0.00 8.03 655.26 0.05 110.77 0.08 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0268 8.03 0.00 0.00 0.00 0.00 0.00 8.03 657.77 0.05 118.76 0.08 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0268 8.03 0.00 0.00 0.00 0.00 0.00 8.03 660.28 0.05 126.75 0.09 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0268 8.03 0.00 0.00 0.00 0.00 0.00 8.03 662.79 0.05 134.74 0.10 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0268 8.03 0.00 0.00 0.00 0.00 0.00 8.03 665.29 0.05 142.72 0.10 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0268 8.03 0.00 0.00 0.00 0.00 0.00 8.03 667.80 0.05 150.71 0.11 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0268 8.03 0.00 0.00 0.00 0.00 0.00 8.03 670.31 0.05 158.70 0.11 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0268 8.03 0.00 0.00 0.00 0.00 0.00 8.03 672.82 0.05 166.69 0.12 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0301 9.04 0.00 0.00 0.00 0.00 0.00 9.04 675.32 0.05 175.68 0.12 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0268 8.03 0.00 0.00 0.00 0.00 0.00 8.03 678.15 0.05 183.67 0.13 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0301 9.04 0.00 0.00 0.00 0.00 0.00 9.04 680.65 0.05 192.66 0.14 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0301 9.04 0.00 0.00 0.00 0.00 0.00 9.04 683.48 0.05 201.65 0.14 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0301 9.04 0.00 0.00 0.00 0.00 0.00 9.04 686.30 0.05 210.64 0.15 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0301 9.04 0.00 0.00 0.00 0.00 0.00 9.04 689.12 0.05 219.63 0.16 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0301 9.04 0.00 0.00 0.00 0.00 0.00 9.04 691.94 0.05 228.62 0.16 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0301 9.04 0.00 0.00 0.00 0.00 0.00 9.04 694.76 0.05 237.61 0.17 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0301 9.04 0.00 0.00 0.00 0.00 0.00 9.04 697.59 0.05 246.60 0.17 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0335 10.04 0.00 0.00 0.00 0.00 0.00 10.04 700.41 0.05 256.60 0.18 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0335 10.04 0.00 0.00 0.00 0.00 0.00 10.04 703.55 0.05 266.59 0.19 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0335 10.04 0.00 0.00 0.00 0.00 0.00 10.04 706.68 0.05 276.59 0.20 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0335 10.04 0.00 0.00 0.00 0.00 0.00 10.04 709.82 0.05 286.58 0.20 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0335 10.04 0.00 0.00 0.00 0.00 0.00 10.04 712.96 0.05 296.57 0.21 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0368 11.05 0.00 0.00 0.00 0.00 0.00 11.05 716.09 0.05 307.57 0.22 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0368 11.05 0.00 0.00 0.00 0.00 0.00 11.05 719.55 0.05 318.57 0.23 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0368 11.05 0.00 0.00 0.00 0.00 0.00 11.05 723.00 0.05 329.57 0.23 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0402 12.05 0.00 0.00 0.00 0.00 0.00 12.05 726.45 0.05 341.57 0.24 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0435 13.06 0.00 0.00 0.00 0.00 0.00 13.06 730.22 0.05 354.57 0.25 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0544 16.31 0.00 0.00 0.00 0.00 0.00 16.31 734.30 0.05 370.84 0.26 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0544 16.31 0.00 0.00 0.00 0.00 0.00 16.31 739.41 0.05 387.10 0.27 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.0879 26.36 0.00 0.00 0.00 0.00 0.00 26.36 744.51 0.05 413.40 0.29 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.0879 26.36 0.00 0.00 0.00 0.00 0.00 26.36 752.77 0.05 439.71 0.31 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.1213 36.40 0.00 0.00 0.00 0.00 0.00 36.40 761.02 0.05 476.05 0.34 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.1213 36.40 0.00 0.00 0.00 0.00 0.00 36.40 772.43 0.05 512.40 0.36 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.1548 46.44 0.00 0.00 0.00 0.00 0.00 46.44 783.84 0.05 558.79 0.39 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.1883 56.49 0.00 0.00 0.00 0.00 0.00 56.49 798.40 0.06 615.22 0.43 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.2218 66.53 0.00 0.00 0.00 0.00 0.00 66.53 816.12 0.06 681.69 0.48 0.00 0.00 657

4 of 6
4:20 2 0.91 0.56 N/A 0.3468 0.2552 76.57 0.00 0.00 0.00 0.00 0.00 76.57 836.98 0.06 758.21 0.54 0.00 0.00 4:25 2.1 0.96 0.56 N/A 0.3922 0.2887 86.62 0.00 0.00 0.00 0.00 0.00 86.62 861.00 0.06 844.76 0.60 0.00 0.00 4:30 2.1 0.96 0.56 N/A 0.3922 0.2887 86.62 0.00 0.00 0.00 0.00 0.00 86.62 888.17 0.06 931.32 0.66 0.00 0.00 4:35 2.2 1.00 0.56 N/A 0.4377 0.3222 96.66 0.00 0.00 0.00 0.00 0.00 96.66 915.34 0.06 1027.91 0.73 0.00 0.00 4:40 2.3 1.05 0.56 N/A 0.4832 0.3557 106.70 0.00 0.00 0.00 0.00 0.00 106.70 945.66 0.07 1134.55 0.80 0.00 0.00 4:45 2.4 1.09 0.56 N/A 0.5287 0.3891 116.74 0.00 0.00 0.00 0.00 0.00 116.74 979.13 0.07 1251.22 0.88 0.00 0.00 4:50 2.4 1.09 0.56 N/A 0.5287 0.3891 116.74 0.00 0.00 0.00 0.00 0.00 116.74 1015.76 0.07 1367.90 0.97 0.00 0.00 4:55 2.5 1.14 0.56 N/A 0.5742 0.4226 126.79 0.00 0.00 0.00 0.00 0.00 126.79 1052.38 0.07 1494.61 1.06 0.00 0.00 5:00 2.6 1.18 0.56 N/A 0.6196 0.4561 136.83 0.00 0.00 0.00 0.00 0.00 136.83 1092.16 0.08 1631.37 1.15 0.00 0.00 5:05 3.1 1.41 0.56 N/A 0.8470 0.6235 187.05 0.00 0.00 0.00 0.00 0.00 187.05 1135.09 0.08 1818.34 1.28 0.00 0.00 5:10 3.6 1.64 0.56 N/A 1.0744 0.7909 237.26 0.00 0.00 0.00 0.00 0.00 237.26 1193.78 0.08 2055.52 1.45 0.00 0.00 5:15 3.9 1.77 0.56 N/A 1.2109 0.8913 267.39 0.00 0.00 0.00 0.00 0.00 267.39 1268.23 0.09 2322.82 1.64 0.00 0.00 5:20 4.2 1.91 0.56 N/A 1.3473 0.9917 297.52 0.00 0.00 0.00 0.00 0.00 297.52 1352.13 0.09 2620.25 1.85 0.00 0.00 5:25 4.7 2.14 0.56 N/A 1.5747 1.1591 347.74 0.00 0.00 0.00 0.00 0.00 347.74 1445.49 0.10 2967.88 2.10 0.00 0.00 5:30 5.6 2.55 0.56 N/A 1.9840 1.4604 438.12 0.00 0.00 0.00 0.00 0.00 438.12 1554.62 0.11 3405.90 2.41 0.00 0.00 5:35 1.9 0.86 0.56 N/A 0.3013 0.2218 66.53 0.00 0.00 0.00 0.00 0.00 66.53 1692.11 0.12 3472.31 2.45 0.00 0.00 5:40 0.9 0.41 0.56 0.37 0.0409 0.0301 9.04 0.00 0.00 0.00 0.00 0.00 9.04 1712.96 0.12 3481.23 2.46 0.00 0.00 5:45 0.6 0.27 0.56 0.25 0.0273 0.0201 6.03 0.00 0.00 0.00 0.00 0.00 6.03 1715.76 0.12 3487.14 2.46 0.00 0.00 5:50 0.5 0.23 0.56 0.20 0.0227 0.0167 5.02 0.00 0.00 0.00 0.00 0.00 5.02 1717.61 0.12 3492.04 2.47 0.00 0.00 5:55 0.3 0.14 0.56 0.12 0.0136 0.0100 3.01 0.00 0.00 0.00 0.00 0.00 3.01 1719.15 0.12 3494.93 2.47 0.00 0.00 6:00 0.2 0.09 0.56 0.08 0.0091 0.0067 2.01 0.00 0.00 0.00 0.00 0.00 2.01 1720.06 0.12 3496.82 2.47 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1720.65 0.12 3496.70 2.47 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1720.61 0.12 3496.58 2.47 0.00 0.00 6:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1720.58 0.12 3496.47 2.47 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1720.54 0.12 3496.35 2.47 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1720.50 0.12 3496.23 2.47 0.00 0.00 6:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1720.46 0.12 3496.11 2.47 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1720.43 0.12 3495.99 2.47 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1720.39 0.12 3495.87 2.47 0.00 0.00 6:45 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1720.35 0.12 3495.75 2.47 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1720.31 0.12 3495.63 2.47 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1720.28 0.12 3495.51 2.47 0.00 0.00 7:00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1720.24 0.12 3495.39 2.47 0.00 0.00 Total volume (cf)3501.12 Total Overflow (cf)0.00
658

5 of 6
24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0030 2.68 0.00 0.00 0.00 0.00 0.00 2.68 623.00 0.13 2.55 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 623.80 0.13 6.43 0.00 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 625.02 0.13 10.32 0.01 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0059 5.35 0.00 0.00 0.00 0.00 0.00 5.35 626.24 0.13 15.54 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 627.88 0.13 19.42 0.01 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 629.10 0.13 23.31 0.02 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 630.32 0.13 27.19 0.02 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0059 5.35 0.00 0.00 0.00 0.00 0.00 5.35 631.53 0.13 32.41 0.02 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0059 5.35 0.00 0.00 0.00 0.00 0.00 5.35 633.17 0.13 37.63 0.03 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0059 5.35 0.00 0.00 0.00 0.00 0.00 5.35 634.81 0.13 42.85 0.03 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0074 6.69 0.00 0.00 0.00 0.00 0.00 6.69 636.45 0.13 49.41 0.03 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0074 6.69 0.00 0.00 0.00 0.00 0.00 6.69 638.51 0.13 55.97 0.04 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0074 6.69 0.00 0.00 0.00 0.00 0.00 6.69 640.57 0.13 62.53 0.04 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0074 6.69 0.00 0.00 0.00 0.00 0.00 6.69 642.63 0.13 69.08 0.05 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0074 6.69 0.00 0.00 0.00 0.00 0.00 6.69 644.68 0.13 75.64 0.05 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0089 8.03 0.00 0.00 0.00 0.00 0.00 8.03 646.74 0.13 83.53 0.06 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0089 8.03 0.00 0.00 0.00 0.00 0.00 8.03 649.22 0.14 91.43 0.06 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0104 9.37 0.00 0.00 0.00 0.00 0.00 9.37 651.70 0.14 100.66 0.07 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0104 9.37 0.00 0.00 0.00 0.00 0.00 9.37 654.60 0.14 109.89 0.08 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0119 10.71 0.00 0.00 0.00 0.00 0.00 10.71 657.49 0.14 120.46 0.09 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0089 8.03 0.00 0.00 0.00 0.00 0.00 8.03 660.81 0.14 128.35 0.09 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0104 9.37 0.00 0.00 0.00 0.00 0.00 9.37 663.29 0.14 137.58 0.10 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0119 10.71 0.00 0.00 0.00 0.00 0.00 10.71 666.19 0.14 148.15 0.10 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0119 10.71 0.00 0.00 0.00 0.00 0.00 10.71 669.50 0.14 158.71 0.11 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0134 12.04 0.00 0.00 0.00 0.00 0.00 12.04 672.82 0.14 170.62 0.12 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0134 12.04 0.00 0.00 0.00 0.00 0.00 12.04 676.56 0.14 182.52 0.13 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0149 13.38 0.00 0.00 0.00 0.00 0.00 13.38 680.29 0.14 195.76 0.14 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0149 13.38 0.00 0.00 0.00 0.00 0.00 13.38 684.45 0.14 209.00 0.15 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0149 13.38 0.00 0.00 0.00 0.00 0.00 13.38 688.60 0.14 222.24 0.16 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0164 14.72 0.00 0.00 0.00 0.00 0.00 14.72 692.76 0.14 236.81 0.17 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0178 16.06 0.00 0.00 0.00 0.00 0.00 16.06 697.34 0.15 252.73 0.18 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0193 17.40 0.00 0.00 0.00 0.00 0.00 17.40 702.33 0.15 269.98 0.19 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0223 20.07 0.00 0.00 0.00 0.00 0.00 20.07 707.75 0.15 289.90 0.20 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0223 20.07 0.00 0.00 0.00 0.00 0.00 20.07 714.00 0.15 309.83 0.22 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0238 21.41 0.00 0.00 0.00 0.00 0.00 21.41 720.25 0.15 331.09 0.23 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0253 22.75 0.00 0.00 0.00 0.00 0.00 22.75 726.93 0.15 353.69 0.25 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0283 25.43 0.00 0.00 0.00 0.00 0.00 25.43 734.02 0.15 378.96 0.27 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0297 26.76 0.00 0.00 0.00 0.00 0.00 26.76 741.95 0.15 405.57 0.29 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0312 28.10 0.00 0.00 0.00 0.00 0.00 28.10 750.31 0.16 433.51 0.31 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0327 29.44 0.00 0.00 0.00 0.00 0.00 29.44 759.08 0.16 462.80 0.33 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0223 20.07 0.00 0.00 0.00 0.00 0.00 20.07 768.27 0.16 482.71 0.34 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0223 20.07 0.00 0.00 0.00 0.00 0.00 20.07 774.52 0.16 502.62 0.36 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0297 26.76 0.00 0.00 0.00 0.00 0.00 26.76 780.77 0.16 529.22 0.37 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0297 26.76 0.00 0.00 0.00 0.00 0.00 26.76 789.12 0.16 555.82 0.39 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0283 25.43 0.00 0.00 0.00 0.00 0.00 25.43 797.47 0.17 581.08 0.41 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0283 25.43 0.00 0.00 0.00 0.00 0.00 25.43 805.40 0.17 606.34 0.43 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0253 22.75 0.00 0.00 0.00 0.00 0.00 22.75 813.33 0.17 628.92 0.44 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0268 24.09 0.00 0.00 0.00 0.00 0.00 24.09 820.42 0.17 652.84 0.46 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0372 33.45 0.00 0.00 0.00 0.00 0.00 33.45 827.92 0.17 686.12 0.48 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0387 34.79 0.00 0.00 0.00 0.00 0.00 34.79 838.37 0.17 720.74 0.51 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0458 41.23 0.00 0.00 0.00 0.00 0.00 41.23 849.24 0.18 761.79 0.54 0.00 0.00 659

6 of 6
13:00 2.9 0.59 0.50 N/A 0.0900 0.0663 59.64 0.00 0.00 0.00 0.00 0.00 59.64 862.12 0.18 821.25 0.58 0.00 0.00 13:15 3.4 0.69 0.49 N/A 0.1985 0.1461 131.52 0.00 0.00 0.00 0.00 0.00 131.52 880.79 0.18 952.59 0.67 0.00 0.00 13:30 3.4 0.69 0.48 N/A 0.2059 0.1516 136.43 0.00 0.00 0.00 0.00 0.00 136.43 922.02 0.19 1088.82 0.77 0.00 0.00 13:45 2.3 0.46 0.47 0.42 0.0465 0.0342 30.78 0.00 0.00 0.00 0.00 0.00 30.78 964.78 0.20 1119.40 0.79 0.00 0.00 14:00 2.3 0.46 0.47 0.42 0.0465 0.0342 30.78 0.00 0.00 0.00 0.00 0.00 30.78 974.38 0.20 1149.98 0.81 0.00 0.00 14:15 2.7 0.55 0.46 N/A 0.0862 0.0634 57.09 0.00 0.00 0.00 0.00 0.00 57.09 983.98 0.20 1206.87 0.85 0.00 0.00 14:30 2.6 0.53 0.45 N/A 0.0730 0.0537 48.36 0.00 0.00 0.00 0.00 0.00 48.36 1001.83 0.21 1255.02 0.89 0.00 0.00 14:45 2.6 0.53 0.45 N/A 0.0799 0.0588 52.94 0.00 0.00 0.00 0.00 0.00 52.94 1016.95 0.21 1307.75 0.92 0.00 0.00 15:00 2.5 0.51 0.44 N/A 0.0665 0.0490 44.07 0.00 0.00 0.00 0.00 0.00 44.07 1033.50 0.22 1351.60 0.96 0.00 0.00 15:15 2.4 0.48 0.43 N/A 0.0530 0.0390 35.14 0.00 0.00 0.00 0.00 0.00 35.14 1047.27 0.22 1386.52 0.98 0.00 0.00 15:30 2.3 0.46 0.43 0.42 0.0465 0.0342 30.78 0.00 0.00 0.00 0.00 0.00 30.78 1058.23 0.22 1417.08 1.00 0.00 0.00 15:45 1.9 0.38 0.42 0.35 0.0384 0.0283 25.43 0.00 0.00 0.00 0.00 0.00 25.43 1067.82 0.22 1442.28 1.02 0.00 0.00 16:00 1.9 0.38 0.41 0.35 0.0384 0.0283 25.43 0.00 0.00 0.00 0.00 0.00 25.43 1075.73 0.22 1467.48 1.04 0.00 0.00 16:15 0.4 0.08 0.41 0.07 0.0081 0.0059 5.35 0.00 0.00 0.00 0.00 0.00 5.35 1083.64 0.23 1472.61 1.04 0.00 0.00 16:30 0.4 0.08 0.40 0.07 0.0081 0.0059 5.35 0.00 0.00 0.00 0.00 0.00 5.35 1085.25 0.23 1477.74 1.04 0.00 0.00 16:45 0.3 0.06 0.39 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 1086.86 0.23 1481.53 1.05 0.00 0.00 17:00 0.3 0.06 0.39 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 1088.05 0.23 1485.31 1.05 0.00 0.00 17:15 0.5 0.10 0.38 0.09 0.0101 0.0074 6.69 0.00 0.00 0.00 0.00 0.00 6.69 1089.24 0.23 1491.78 1.05 0.00 0.00 17:30 0.5 0.10 0.38 0.09 0.0101 0.0074 6.69 0.00 0.00 0.00 0.00 0.00 6.69 1091.27 0.23 1498.24 1.06 0.00 0.00 17:45 0.5 0.10 0.37 0.09 0.0101 0.0074 6.69 0.00 0.00 0.00 0.00 0.00 6.69 1093.30 0.23 1504.70 1.06 0.00 0.00 18:00 0.4 0.08 0.37 0.07 0.0081 0.0059 5.35 0.00 0.00 0.00 0.00 0.00 5.35 1095.33 0.23 1509.83 1.07 0.00 0.00 18:15 0.4 0.08 0.36 0.07 0.0081 0.0059 5.35 0.00 0.00 0.00 0.00 0.00 5.35 1096.93 0.23 1514.95 1.07 0.00 0.00 18:30 0.4 0.08 0.35 0.07 0.0081 0.0059 5.35 0.00 0.00 0.00 0.00 0.00 5.35 1098.54 0.23 1520.08 1.07 0.00 0.00 18:45 0.3 0.06 0.35 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 1100.15 0.23 1523.86 1.08 0.00 0.00 19:00 0.2 0.04 0.34 0.04 0.0040 0.0030 2.68 0.00 0.00 0.00 0.00 0.00 2.68 1101.34 0.23 1526.31 1.08 0.00 0.00 19:15 0.3 0.06 0.34 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 1102.11 0.23 1530.09 1.08 0.00 0.00 19:30 0.4 0.08 0.34 0.07 0.0081 0.0059 5.35 0.00 0.00 0.00 0.00 0.00 5.35 1103.30 0.23 1535.22 1.08 0.00 0.00 19:45 0.3 0.06 0.33 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 1104.90 0.23 1539.00 1.09 0.00 0.00 20:00 0.2 0.04 0.33 0.04 0.0040 0.0030 2.68 0.00 0.00 0.00 0.00 0.00 2.68 1106.09 0.23 1541.45 1.09 0.00 0.00 20:15 0.3 0.06 0.32 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 1106.86 0.23 1545.23 1.09 0.00 0.00 20:30 0.3 0.06 0.32 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 1108.05 0.23 1549.02 1.09 0.00 0.00 20:45 0.3 0.06 0.31 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 1109.24 0.23 1552.80 1.10 0.00 0.00 21:00 0.2 0.04 0.31 0.04 0.0040 0.0030 2.68 0.00 0.00 0.00 0.00 0.00 2.68 1110.42 0.23 1555.24 1.10 0.00 0.00 21:15 0.3 0.06 0.31 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 1111.19 0.23 1559.03 1.10 0.00 0.00 21:30 0.2 0.04 0.30 0.04 0.0040 0.0030 2.68 0.00 0.00 0.00 0.00 0.00 2.68 1112.38 0.23 1561.47 1.10 0.00 0.00 21:45 0.3 0.06 0.30 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 1113.15 0.23 1565.26 1.11 0.00 0.00 22:00 0.2 0.04 0.30 0.04 0.0040 0.0030 2.68 0.00 0.00 0.00 0.00 0.00 2.68 1114.33 0.23 1567.70 1.11 0.00 0.00 22:15 0.3 0.06 0.29 0.05 0.0061 0.0045 4.01 0.00 0.00 0.00 0.00 0.00 4.01 1115.10 0.23 1571.48 1.11 0.00 0.00 22:30 0.2 0.04 0.29 0.04 0.0040 0.0030 2.68 0.00 0.00 0.00 0.00 0.00 2.68 1116.29 0.23 1573.93 1.11 0.00 0.00 22:45 0.2 0.04 0.29 0.04 0.0040 0.0030 2.68 0.00 0.00 0.00 0.00 0.00 2.68 1117.05 0.23 1576.37 1.11 0.00 0.00 23:00 0.2 0.04 0.29 0.04 0.0040 0.0030 2.68 0.00 0.00 0.00 0.00 0.00 2.68 1117.82 0.23 1578.81 1.12 0.00 0.00 23:15 0.2 0.04 0.28 0.04 0.0040 0.0030 2.68 0.00 0.00 0.00 0.00 0.00 2.68 1118.59 0.23 1581.26 1.12 0.00 0.00 23:30 0.2 0.04 0.28 0.04 0.0040 0.0030 2.68 0.00 0.00 0.00 0.00 0.00 2.68 1119.36 0.23 1583.70 1.12 0.00 0.00 23:45 0.2 0.04 0.28 0.04 0.0040 0.0030 2.68 0.00 0.00 0.00 0.00 0.00 2.68 1120.12 0.23 1586.14 1.12 0.00 0.00 24:00 0.2 0.04 0.28 0.04 0.0040 0.0030 2.68 0.00 0.00 0.00 0.00 0.00 2.68 1120.89 0.23 1588.59 1.12 0.00 0.00 0 0.00 0.28 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1121.66 0.23 1588.35 1.12 0.00 0.00 Total volume (cf)1606.06 Total Overflow (cf)0.00
660

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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=0.41ac+0.09ac typ street frontage=0.50ac

1.14 5/7/2024 LOT 11-FRONT
Drainage Area (ac.)0.5000 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 AND 0.09AC TYPICAL STREET FRONTAGE Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =2118 s.f.Bot. =756 s.f.Max. Depth (d)=3 Max. storage=4139.39 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.2557 76.71 0.00 0.00 0.00 0.00 0.00 76.71 756.00 0.05 76.66 0.06 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.4161 124.83 0.00 0.00 0.00 0.00 0.00 124.83 781.22 0.05 201.44 0.15 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 0.4598 137.95 0.00 0.00 0.00 0.00 0.00 137.95 822.28 0.06 339.33 0.25 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 0.4307 129.20 0.00 0.00 0.00 0.00 0.00 129.20 867.65 0.06 468.47 0.34 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 0.6785 203.56 0.00 0.00 0.00 0.00 0.00 203.56 910.14 0.06 671.97 0.49 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 0.7806 234.18 0.00 0.00 0.00 0.00 0.00 234.18 977.10 0.07 906.09 0.66 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 0.9410 282.30 0.00 0.00 0.00 0.00 0.00 282.30 1054.13 0.07 1188.31 0.86 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 1.0285 308.54 0.00 0.00 0.00 0.00 0.00 308.54 1147.00 0.08 1496.78 1.08 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 1.5096 452.89 0.00 0.00 0.00 0.00 0.00 452.89 1248.49 0.09 1949.58 1.41 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 2.2824 684.72 0.00 0.00 0.00 0.00 0.00 684.72 1397.48 0.10 2634.20 1.91 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 2.0637 619.11 0.00 0.00 0.00 0.00 0.00 619.11 1622.74 0.11 3253.20 2.36 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.3286 98.58 0.00 0.00 0.00 0.00 0.00 98.58 1826.41 0.13 3351.66 2.43 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1858.81 0.13 3351.53 2.43 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1858.77 0.13 3351.40 2.43 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1858.72 0.13 3351.27 2.43 0.00 0.00 Total volume (cf)3352.59 Total Overflow (cf)0.00
661
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0244 7.31 0.00 0.00 0.00 0.00 0.00 7.31 756.00 0.05 7.26 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0244 7.31 0.00 0.00 0.00 0.00 0.00 7.31 758.39 0.05 14.52 0.01 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 760.78 0.05 20.66 0.01 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0281 8.44 0.00 0.00 0.00 0.00 0.00 8.44 762.80 0.05 29.05 0.02 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0281 8.44 0.00 0.00 0.00 0.00 0.00 8.44 765.56 0.05 37.43 0.03 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 768.32 0.05 53.53 0.04 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0281 8.44 0.00 0.00 0.00 0.00 0.00 8.44 773.61 0.05 61.91 0.04 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 776.37 0.05 78.01 0.06 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 781.67 0.05 94.10 0.07 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0281 8.44 0.00 0.00 0.00 0.00 0.00 8.44 786.96 0.05 102.48 0.07 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0300 9.00 0.00 0.00 0.00 0.00 0.00 9.00 789.72 0.05 111.43 0.08 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 792.66 0.06 127.52 0.09 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.1288 38.65 0.00 0.00 0.00 0.00 0.00 38.65 797.96 0.06 166.12 0.12 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.1288 38.65 0.00 0.00 0.00 0.00 0.00 38.65 810.66 0.06 204.72 0.15 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.1288 38.65 0.00 0.00 0.00 0.00 0.00 38.65 823.36 0.06 243.31 0.18 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.0913 27.40 0.00 0.00 0.00 0.00 0.00 27.40 836.06 0.06 270.65 0.20 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.2039 61.16 0.00 0.00 0.00 0.00 0.00 61.16 845.05 0.06 331.75 0.24 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.2226 66.79 0.00 0.00 0.00 0.00 0.00 66.79 865.16 0.06 398.48 0.29 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.1664 49.91 0.00 0.00 0.00 0.00 0.00 49.91 887.11 0.06 448.32 0.32 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.2226 66.79 0.00 0.00 0.00 0.00 0.00 66.79 903.51 0.06 515.05 0.37 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.3351 100.54 0.00 0.00 0.00 0.00 0.00 100.54 925.47 0.06 615.53 0.45 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.2976 89.29 0.00 0.00 0.00 0.00 0.00 89.29 958.53 0.07 704.75 0.51 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.2601 78.04 0.00 0.00 0.00 0.00 0.00 78.04 987.89 0.07 782.72 0.57 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.2789 83.66 0.00 0.00 0.00 0.00 0.00 83.66 1013.54 0.07 866.32 0.63 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.2976 89.29 0.00 0.00 0.00 0.00 0.00 89.29 1041.05 0.07 955.53 0.69 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 0.5039 151.18 0.00 0.00 0.00 0.00 0.00 151.18 1070.40 0.07 1106.64 0.80 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 0.6540 196.19 0.00 0.00 0.00 0.00 0.00 196.19 1120.12 0.08 1302.76 0.94 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.3727 111.80 0.00 0.00 0.00 0.00 0.00 111.80 1184.65 0.08 1414.48 1.03 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 0.9916 297.47 0.00 0.00 0.00 0.00 0.00 297.47 1221.41 0.08 1711.86 1.24 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 1.0853 325.60 0.00 0.00 0.00 0.00 0.00 325.60 1319.26 0.09 2037.38 1.48 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 1.2541 376.24 0.00 0.00 0.00 0.00 0.00 376.24 1426.37 0.10 2413.52 1.75 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 0.8228 246.83 0.00 0.00 0.00 0.00 0.00 246.83 1550.13 0.11 2660.24 1.93 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.0913 27.40 0.00 0.00 0.00 0.00 0.00 27.40 1631.31 0.11 2687.53 1.95 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 1640.29 0.11 2703.56 1.96 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 1645.56 0.11 2719.60 1.97 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0113 3.38 0.00 0.00 0.00 0.00 0.00 3.38 1650.84 0.11 2722.86 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.91 0.11 2722.74 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.88 0.11 2722.63 1.97 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.84 0.11 2722.51 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.80 0.11 2722.40 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.76 0.11 2722.28 1.97 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.72 0.11 2722.17 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.69 0.11 2722.05 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.65 0.11 2721.94 1.97 0.00 0.00 Total volume (cf)2725.39 Total Overflow (cf)0.00
662

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6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0115 3.44 0.00 0.00 0.00 0.00 0.00 3.44 756.00 0.05 3.39 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0138 4.13 0.00 0.00 0.00 0.00 0.00 4.13 757.11 0.05 7.46 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0138 4.13 0.00 0.00 0.00 0.00 0.00 4.13 758.46 0.05 11.54 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0138 4.13 0.00 0.00 0.00 0.00 0.00 4.13 759.80 0.05 15.61 0.01 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0138 4.13 0.00 0.00 0.00 0.00 0.00 4.13 761.14 0.05 19.69 0.01 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 762.48 0.05 24.45 0.02 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 764.04 0.05 29.21 0.02 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 765.61 0.05 33.97 0.02 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 767.18 0.05 38.73 0.03 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 768.74 0.05 43.50 0.03 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 770.31 0.05 48.26 0.03 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 771.88 0.05 53.71 0.04 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 773.67 0.05 59.16 0.04 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 775.46 0.05 64.61 0.05 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 777.26 0.05 70.05 0.05 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 779.05 0.05 75.50 0.05 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 780.84 0.05 80.95 0.06 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 782.64 0.05 86.40 0.06 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 784.43 0.05 91.85 0.07 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 786.22 0.05 97.30 0.07 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 788.01 0.05 102.75 0.07 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 789.81 0.05 108.19 0.08 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 791.60 0.05 113.64 0.08 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 793.39 0.06 119.78 0.09 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 795.41 0.06 125.23 0.09 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 797.20 0.06 131.36 0.10 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 799.22 0.06 137.50 0.10 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 801.24 0.06 143.63 0.10 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 803.26 0.06 149.77 0.11 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 805.28 0.06 155.90 0.11 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 807.30 0.06 162.04 0.12 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 809.32 0.06 168.17 0.12 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 811.33 0.06 175.00 0.13 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 813.58 0.06 181.82 0.13 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 815.82 0.06 188.64 0.14 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 818.07 0.06 195.46 0.14 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 820.31 0.06 202.28 0.15 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0252 7.57 0.00 0.00 0.00 0.00 0.00 7.57 822.56 0.06 209.79 0.15 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0252 7.57 0.00 0.00 0.00 0.00 0.00 7.57 825.03 0.06 217.30 0.16 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0252 7.57 0.00 0.00 0.00 0.00 0.00 7.57 827.50 0.06 224.81 0.16 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0275 8.25 0.00 0.00 0.00 0.00 0.00 8.25 829.97 0.06 233.01 0.17 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0298 8.94 0.00 0.00 0.00 0.00 0.00 8.94 832.67 0.06 241.89 0.18 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0372 11.17 0.00 0.00 0.00 0.00 0.00 11.17 835.59 0.06 253.01 0.18 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0372 11.17 0.00 0.00 0.00 0.00 0.00 11.17 839.25 0.06 264.12 0.19 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.0602 18.05 0.00 0.00 0.00 0.00 0.00 18.05 842.91 0.06 282.12 0.20 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.0602 18.05 0.00 0.00 0.00 0.00 0.00 18.05 848.83 0.06 300.11 0.22 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.0831 24.93 0.00 0.00 0.00 0.00 0.00 24.93 854.75 0.06 324.98 0.24 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.0831 24.93 0.00 0.00 0.00 0.00 0.00 24.93 862.93 0.06 349.86 0.25 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.1060 31.81 0.00 0.00 0.00 0.00 0.00 31.81 871.11 0.06 381.61 0.28 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.1290 38.69 0.00 0.00 0.00 0.00 0.00 38.69 881.56 0.06 420.23 0.30 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.1519 45.57 0.00 0.00 0.00 0.00 0.00 45.57 894.27 0.06 465.74 0.34 0.00 0.00 663

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24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 756.00 0.16 1.68 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 756.55 0.16 4.27 0.00 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 757.40 0.16 6.86 0.00 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 758.26 0.16 10.37 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 759.41 0.16 12.96 0.01 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 760.26 0.16 15.55 0.01 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 761.12 0.16 18.14 0.01 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 761.97 0.16 21.65 0.02 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 763.12 0.16 25.16 0.02 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 764.28 0.16 28.66 0.02 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 765.43 0.16 33.09 0.02 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 766.89 0.16 37.51 0.03 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 768.34 0.16 41.93 0.03 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 769.80 0.16 46.36 0.03 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 771.25 0.16 50.78 0.04 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0061 5.50 0.00 0.00 0.00 0.00 0.00 5.50 772.71 0.16 56.12 0.04 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0061 5.50 0.00 0.00 0.00 0.00 0.00 5.50 774.46 0.16 61.45 0.04 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0071 6.42 0.00 0.00 0.00 0.00 0.00 6.42 776.22 0.16 67.71 0.05 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0071 6.42 0.00 0.00 0.00 0.00 0.00 6.42 778.28 0.16 73.96 0.05 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0081 7.33 0.00 0.00 0.00 0.00 0.00 7.33 780.34 0.16 81.13 0.06 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0061 5.50 0.00 0.00 0.00 0.00 0.00 5.50 782.70 0.16 86.47 0.06 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0071 6.42 0.00 0.00 0.00 0.00 0.00 6.42 784.45 0.16 92.72 0.07 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0081 7.33 0.00 0.00 0.00 0.00 0.00 7.33 786.51 0.16 99.89 0.07 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0081 7.33 0.00 0.00 0.00 0.00 0.00 7.33 788.87 0.16 107.06 0.08 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0092 8.25 0.00 0.00 0.00 0.00 0.00 8.25 791.23 0.16 115.14 0.08 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0092 8.25 0.00 0.00 0.00 0.00 0.00 8.25 793.89 0.17 123.23 0.09 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 796.55 0.17 132.23 0.10 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 799.51 0.17 141.23 0.10 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 802.47 0.17 150.22 0.11 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0112 10.08 0.00 0.00 0.00 0.00 0.00 10.08 805.43 0.17 160.14 0.12 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0122 11.00 0.00 0.00 0.00 0.00 0.00 11.00 808.69 0.17 170.97 0.12 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0132 11.92 0.00 0.00 0.00 0.00 0.00 11.92 812.25 0.17 182.72 0.13 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 816.12 0.17 196.29 0.14 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 820.59 0.17 209.87 0.15 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0163 14.67 0.00 0.00 0.00 0.00 0.00 14.67 825.06 0.17 224.37 0.16 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0173 15.58 0.00 0.00 0.00 0.00 0.00 15.58 829.82 0.17 239.77 0.17 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0193 17.41 0.00 0.00 0.00 0.00 0.00 17.41 834.89 0.17 257.02 0.19 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 840.57 0.18 275.17 0.20 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0214 19.25 0.00 0.00 0.00 0.00 0.00 19.25 846.54 0.18 294.24 0.21 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0224 20.16 0.00 0.00 0.00 0.00 0.00 20.16 852.82 0.18 314.23 0.23 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 859.39 0.18 327.80 0.24 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 863.86 0.18 341.37 0.25 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 868.32 0.18 359.52 0.26 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 874.29 0.18 377.67 0.27 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0193 17.41 0.00 0.00 0.00 0.00 0.00 17.41 880.27 0.18 394.90 0.29 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0193 17.41 0.00 0.00 0.00 0.00 0.00 17.41 885.94 0.18 412.13 0.30 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0173 15.58 0.00 0.00 0.00 0.00 0.00 15.58 891.60 0.19 427.53 0.31 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0183 16.50 0.00 0.00 0.00 0.00 0.00 16.50 896.67 0.19 443.84 0.32 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0255 22.91 0.00 0.00 0.00 0.00 0.00 22.91 902.04 0.19 466.56 0.34 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0265 23.83 0.00 0.00 0.00 0.00 0.00 23.83 909.52 0.19 490.21 0.36 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0314 28.24 0.00 0.00 0.00 0.00 0.00 28.24 917.29 0.19 518.25 0.38 0.00 0.00 665

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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=0.95ac
5/7/2024 LOT 11 BACK
Drainage Area (ac.)0.9500 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =2788 s.f.Bot. =794 s.f.Max. Depth (d)=4 Max. storage=6759.79 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.4859 145.76 0.00 0.00 0.00 0.00 0.00 145.76 794.00 0.06 145.70 0.09 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.7906 237.18 0.00 0.00 0.00 0.00 0.00 237.18 836.98 0.06 382.82 0.23 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 0.8737 262.11 0.00 0.00 0.00 0.00 0.00 262.11 906.92 0.06 644.86 0.38 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 0.8183 245.49 0.00 0.00 0.00 0.00 0.00 245.49 984.22 0.07 890.28 0.53 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 1.2892 386.77 0.00 0.00 0.00 0.00 0.00 386.77 1056.61 0.07 1276.98 0.76 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 1.4832 444.95 0.00 0.00 0.00 0.00 0.00 444.95 1170.68 0.08 1721.84 1.02 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 1.7879 536.37 0.00 0.00 0.00 0.00 0.00 536.37 1301.91 0.09 2258.12 1.34 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 1.9541 586.23 0.00 0.00 0.00 0.00 0.00 586.23 1460.10 0.10 2844.25 1.68 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 2.8683 860.49 0.00 0.00 0.00 0.00 0.00 860.49 1633.00 0.11 3704.63 2.19 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 4.3366 1300.97 0.00 0.00 0.00 0.00 0.00 1300.97 1886.79 0.13 5005.47 2.96 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 3.9210 1176.31 0.00 0.00 0.00 0.00 0.00 1176.31 2270.51 0.16 6181.61 3.66 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.6244 187.31 0.00 0.00 0.00 0.00 0.00 187.31 2617.45 0.18 6368.74 3.77 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2672.65 0.19 6368.56 3.77 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2672.59 0.19 6368.37 3.77 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2672.54 0.19 6368.19 3.77 0.00 0.00 Total volume (cf)6369.92 Total Overflow (cf)0.00
667
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0463 13.90 0.00 0.00 0.00 0.00 0.00 13.90 794.00 0.06 13.84 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0463 13.90 0.00 0.00 0.00 0.00 0.00 13.90 798.08 0.06 27.68 0.02 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0392 11.76 0.00 0.00 0.00 0.00 0.00 11.76 802.17 0.06 39.39 0.02 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0535 16.04 0.00 0.00 0.00 0.00 0.00 16.04 805.62 0.06 55.37 0.03 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0535 16.04 0.00 0.00 0.00 0.00 0.00 16.04 810.33 0.06 71.35 0.04 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.1023 30.68 0.00 0.00 0.00 0.00 0.00 30.68 815.05 0.06 101.97 0.06 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0535 16.04 0.00 0.00 0.00 0.00 0.00 16.04 824.08 0.06 117.95 0.07 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.1023 30.68 0.00 0.00 0.00 0.00 0.00 30.68 828.79 0.06 148.57 0.09 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.1023 30.68 0.00 0.00 0.00 0.00 0.00 30.68 837.82 0.06 179.19 0.11 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0535 16.04 0.00 0.00 0.00 0.00 0.00 16.04 846.86 0.06 195.17 0.12 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0570 17.10 0.00 0.00 0.00 0.00 0.00 17.10 851.57 0.06 212.21 0.13 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.1023 30.68 0.00 0.00 0.00 0.00 0.00 30.68 856.60 0.06 242.83 0.14 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.2448 73.44 0.00 0.00 0.00 0.00 0.00 73.44 865.63 0.06 316.21 0.19 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.2448 73.44 0.00 0.00 0.00 0.00 0.00 73.44 887.28 0.06 389.59 0.23 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.2448 73.44 0.00 0.00 0.00 0.00 0.00 73.44 908.92 0.06 462.97 0.27 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.1735 52.06 0.00 0.00 0.00 0.00 0.00 52.06 930.57 0.06 514.96 0.30 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.3873 116.20 0.00 0.00 0.00 0.00 0.00 116.20 945.90 0.07 631.10 0.37 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.4230 126.89 0.00 0.00 0.00 0.00 0.00 126.89 980.16 0.07 757.92 0.45 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.3161 94.82 0.00 0.00 0.00 0.00 0.00 94.82 1017.57 0.07 852.67 0.50 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.4230 126.89 0.00 0.00 0.00 0.00 0.00 126.89 1045.52 0.07 979.49 0.58 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.6368 191.03 0.00 0.00 0.00 0.00 0.00 191.03 1082.93 0.08 1170.45 0.69 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.5655 169.65 0.00 0.00 0.00 0.00 0.00 169.65 1139.26 0.08 1340.03 0.79 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.4942 148.27 0.00 0.00 0.00 0.00 0.00 148.27 1189.28 0.08 1488.22 0.88 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.5299 158.96 0.00 0.00 0.00 0.00 0.00 158.96 1232.99 0.09 1647.09 0.97 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.5655 169.65 0.00 0.00 0.00 0.00 0.00 169.65 1279.86 0.09 1816.66 1.07 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 0.9575 287.25 0.00 0.00 0.00 0.00 0.00 287.25 1329.88 0.09 2103.81 1.24 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 1.2426 372.77 0.00 0.00 0.00 0.00 0.00 372.77 1414.58 0.10 2476.49 1.47 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.7080 212.41 0.00 0.00 0.00 0.00 0.00 212.41 1524.51 0.11 2688.80 1.59 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 1.8840 565.20 0.00 0.00 0.00 0.00 0.00 565.20 1587.14 0.11 3253.88 1.93 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 2.0622 618.65 0.00 0.00 0.00 0.00 0.00 618.65 1753.83 0.12 3872.41 2.29 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 2.3829 714.86 0.00 0.00 0.00 0.00 0.00 714.86 1936.28 0.13 4587.13 2.71 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 1.5633 468.98 0.00 0.00 0.00 0.00 0.00 468.98 2147.11 0.15 5055.97 2.99 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.1735 52.06 0.00 0.00 0.00 0.00 0.00 52.06 2285.41 0.16 5107.87 3.02 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.1023 30.68 0.00 0.00 0.00 0.00 0.00 30.68 2300.72 0.16 5138.39 3.04 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.1023 30.68 0.00 0.00 0.00 0.00 0.00 30.68 2309.72 0.16 5168.91 3.06 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0214 6.41 0.00 0.00 0.00 0.00 0.00 6.41 2318.72 0.16 5175.16 3.06 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2320.57 0.16 5175.00 3.06 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2320.52 0.16 5174.84 3.06 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2320.47 0.16 5174.68 3.06 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2320.42 0.16 5174.52 3.06 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2320.38 0.16 5174.36 3.06 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2320.33 0.16 5174.19 3.06 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2320.28 0.16 5174.03 3.06 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2320.23 0.16 5173.87 3.06 0.00 0.00 Total volume (cf)5178.24 Total Overflow (cf)0.00
668

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6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0218 6.53 0.00 0.00 0.00 0.00 0.00 6.53 794.00 0.06 6.48 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0261 7.84 0.00 0.00 0.00 0.00 0.00 7.84 795.91 0.06 14.27 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0261 7.84 0.00 0.00 0.00 0.00 0.00 7.84 798.21 0.06 22.05 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0261 7.84 0.00 0.00 0.00 0.00 0.00 7.84 800.51 0.06 29.84 0.02 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0261 7.84 0.00 0.00 0.00 0.00 0.00 7.84 802.80 0.06 37.63 0.02 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0305 9.15 0.00 0.00 0.00 0.00 0.00 9.15 805.10 0.06 46.72 0.03 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0305 9.15 0.00 0.00 0.00 0.00 0.00 9.15 807.78 0.06 55.81 0.03 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0305 9.15 0.00 0.00 0.00 0.00 0.00 9.15 810.46 0.06 64.90 0.04 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0305 9.15 0.00 0.00 0.00 0.00 0.00 9.15 813.15 0.06 74.00 0.04 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0305 9.15 0.00 0.00 0.00 0.00 0.00 9.15 815.83 0.06 83.09 0.05 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0305 9.15 0.00 0.00 0.00 0.00 0.00 9.15 818.51 0.06 92.18 0.05 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0349 10.46 0.00 0.00 0.00 0.00 0.00 10.46 821.19 0.06 102.58 0.06 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0349 10.46 0.00 0.00 0.00 0.00 0.00 10.46 824.26 0.06 112.98 0.07 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0349 10.46 0.00 0.00 0.00 0.00 0.00 10.46 827.33 0.06 123.38 0.07 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0349 10.46 0.00 0.00 0.00 0.00 0.00 10.46 830.39 0.06 133.77 0.08 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0349 10.46 0.00 0.00 0.00 0.00 0.00 10.46 833.46 0.06 144.17 0.09 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0349 10.46 0.00 0.00 0.00 0.00 0.00 10.46 836.53 0.06 154.57 0.09 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0349 10.46 0.00 0.00 0.00 0.00 0.00 10.46 839.60 0.06 164.97 0.10 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0349 10.46 0.00 0.00 0.00 0.00 0.00 10.46 842.66 0.06 175.36 0.10 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0349 10.46 0.00 0.00 0.00 0.00 0.00 10.46 845.73 0.06 185.76 0.11 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0349 10.46 0.00 0.00 0.00 0.00 0.00 10.46 848.80 0.06 196.16 0.12 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0349 10.46 0.00 0.00 0.00 0.00 0.00 10.46 851.86 0.06 206.56 0.12 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0349 10.46 0.00 0.00 0.00 0.00 0.00 10.46 854.93 0.06 216.95 0.13 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0392 11.76 0.00 0.00 0.00 0.00 0.00 11.76 858.00 0.06 228.66 0.14 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0349 10.46 0.00 0.00 0.00 0.00 0.00 10.46 861.45 0.06 239.05 0.14 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0392 11.76 0.00 0.00 0.00 0.00 0.00 11.76 864.52 0.06 250.75 0.15 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0392 11.76 0.00 0.00 0.00 0.00 0.00 11.76 867.97 0.06 262.46 0.16 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0392 11.76 0.00 0.00 0.00 0.00 0.00 11.76 871.42 0.06 274.16 0.16 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0392 11.76 0.00 0.00 0.00 0.00 0.00 11.76 874.87 0.06 285.86 0.17 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0392 11.76 0.00 0.00 0.00 0.00 0.00 11.76 878.32 0.06 297.56 0.18 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0392 11.76 0.00 0.00 0.00 0.00 0.00 11.76 881.78 0.06 309.26 0.18 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0392 11.76 0.00 0.00 0.00 0.00 0.00 11.76 885.23 0.06 320.97 0.19 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0436 13.07 0.00 0.00 0.00 0.00 0.00 13.07 888.68 0.06 333.97 0.20 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0436 13.07 0.00 0.00 0.00 0.00 0.00 13.07 892.52 0.06 346.98 0.21 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0436 13.07 0.00 0.00 0.00 0.00 0.00 13.07 896.35 0.06 359.99 0.21 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0436 13.07 0.00 0.00 0.00 0.00 0.00 13.07 900.19 0.06 373.00 0.22 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0436 13.07 0.00 0.00 0.00 0.00 0.00 13.07 904.03 0.06 386.00 0.23 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0479 14.38 0.00 0.00 0.00 0.00 0.00 14.38 907.86 0.06 400.32 0.24 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0479 14.38 0.00 0.00 0.00 0.00 0.00 14.38 912.09 0.06 414.63 0.25 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0479 14.38 0.00 0.00 0.00 0.00 0.00 14.38 916.31 0.06 428.94 0.25 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0523 15.68 0.00 0.00 0.00 0.00 0.00 15.68 920.53 0.06 444.56 0.26 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0566 16.99 0.00 0.00 0.00 0.00 0.00 16.99 925.14 0.06 461.49 0.27 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0708 21.23 0.00 0.00 0.00 0.00 0.00 21.23 930.13 0.06 482.66 0.29 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0708 21.23 0.00 0.00 0.00 0.00 0.00 21.23 936.37 0.07 503.82 0.30 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.1143 34.30 0.00 0.00 0.00 0.00 0.00 34.30 942.62 0.07 538.06 0.32 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.1143 34.30 0.00 0.00 0.00 0.00 0.00 34.30 952.72 0.07 572.29 0.34 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.1579 47.37 0.00 0.00 0.00 0.00 0.00 47.37 962.81 0.07 619.59 0.37 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.1579 47.37 0.00 0.00 0.00 0.00 0.00 47.37 976.77 0.07 666.89 0.39 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.2015 60.44 0.00 0.00 0.00 0.00 0.00 60.44 990.72 0.07 727.26 0.43 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.2450 73.51 0.00 0.00 0.00 0.00 0.00 73.51 1008.53 0.07 800.70 0.47 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.2886 86.58 0.00 0.00 0.00 0.00 0.00 86.58 1030.19 0.07 887.21 0.52 0.00 0.00 669

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4:20 2 0.91 0.56 N/A 0.3468 0.3322 99.65 0.00 0.00 0.00 0.00 0.00 99.65 1055.71 0.07 986.79 0.58 0.00 0.00 4:25 2.1 0.96 0.56 N/A 0.3922 0.3757 112.72 0.00 0.00 0.00 0.00 0.00 112.72 1085.08 0.08 1099.43 0.65 0.00 0.00 4:30 2.1 0.96 0.56 N/A 0.3922 0.3757 112.72 0.00 0.00 0.00 0.00 0.00 112.72 1118.31 0.08 1212.07 0.72 0.00 0.00 4:35 2.2 1.00 0.56 N/A 0.4377 0.4193 125.79 0.00 0.00 0.00 0.00 0.00 125.79 1151.54 0.08 1337.78 0.79 0.00 0.00 4:40 2.3 1.05 0.56 N/A 0.4832 0.4629 138.86 0.00 0.00 0.00 0.00 0.00 138.86 1188.62 0.08 1476.56 0.87 0.00 0.00 4:45 2.4 1.09 0.56 N/A 0.5287 0.5064 151.93 0.00 0.00 0.00 0.00 0.00 151.93 1229.55 0.09 1628.40 0.96 0.00 0.00 4:50 2.4 1.09 0.56 N/A 0.5287 0.5064 151.93 0.00 0.00 0.00 0.00 0.00 151.93 1274.34 0.09 1780.24 1.05 0.00 0.00 4:55 2.5 1.14 0.56 N/A 0.5742 0.5500 165.00 0.00 0.00 0.00 0.00 0.00 165.00 1319.13 0.09 1945.15 1.15 0.00 0.00 5:00 2.6 1.18 0.56 N/A 0.6196 0.5936 178.07 0.00 0.00 0.00 0.00 0.00 178.07 1367.78 0.09 2123.12 1.26 0.00 0.00 5:05 3.1 1.41 0.56 N/A 0.8470 0.8114 243.42 0.00 0.00 0.00 0.00 0.00 243.42 1420.28 0.10 2366.44 1.40 0.00 0.00 5:10 3.6 1.64 0.56 N/A 1.0744 1.0292 308.77 0.00 0.00 0.00 0.00 0.00 308.77 1492.05 0.10 2675.10 1.58 0.00 0.00 5:15 3.9 1.77 0.56 N/A 1.2109 1.1599 347.98 0.00 0.00 0.00 0.00 0.00 347.98 1583.10 0.11 3022.97 1.79 0.00 0.00 5:20 4.2 1.91 0.56 N/A 1.3473 1.2906 387.18 0.00 0.00 0.00 0.00 0.00 387.18 1685.71 0.12 3410.03 2.02 0.00 0.00 5:25 4.7 2.14 0.56 N/A 1.5747 1.5084 452.53 0.00 0.00 0.00 0.00 0.00 452.53 1799.89 0.12 3862.44 2.29 0.00 0.00 5:30 5.6 2.55 0.56 N/A 1.9840 1.9005 570.16 0.00 0.00 0.00 0.00 0.00 570.16 1933.34 0.13 4432.47 2.62 0.00 0.00 5:35 1.9 0.86 0.56 N/A 0.3013 0.2886 86.58 0.00 0.00 0.00 0.00 0.00 86.58 2101.49 0.15 4518.90 2.67 0.00 0.00 5:40 0.9 0.41 0.56 0.37 0.0409 0.0392 11.76 0.00 0.00 0.00 0.00 0.00 11.76 2126.98 0.15 4530.52 2.68 0.00 0.00 5:45 0.6 0.27 0.56 0.25 0.0273 0.0261 7.84 0.00 0.00 0.00 0.00 0.00 7.84 2130.41 0.15 4538.21 2.69 0.00 0.00 5:50 0.5 0.23 0.56 0.20 0.0227 0.0218 6.53 0.00 0.00 0.00 0.00 0.00 6.53 2132.68 0.15 4544.60 2.69 0.00 0.00 5:55 0.3 0.14 0.56 0.12 0.0136 0.0131 3.92 0.00 0.00 0.00 0.00 0.00 3.92 2134.56 0.15 4548.37 2.69 0.00 0.00 6:00 0.2 0.09 0.56 0.08 0.0091 0.0087 2.61 0.00 0.00 0.00 0.00 0.00 2.61 2135.68 0.15 4550.84 2.69 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2136.40 0.15 4550.69 2.69 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2136.36 0.15 4550.54 2.69 0.00 0.00 6:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2136.32 0.15 4550.39 2.69 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2136.27 0.15 4550.24 2.69 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2136.23 0.15 4550.10 2.69 0.00 0.00 6:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2136.19 0.15 4549.95 2.69 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2136.14 0.15 4549.80 2.69 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2136.10 0.15 4549.65 2.69 0.00 0.00 6:45 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2136.05 0.15 4549.50 2.69 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2136.01 0.15 4549.35 2.69 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2135.97 0.15 4549.21 2.69 0.00 0.00 7:00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2135.92 0.15 4549.06 2.69 0.00 0.00 Total volume (cf)4556.26 Total Overflow (cf)0.00
670

5 of 6
24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0039 3.48 0.00 0.00 0.00 0.00 0.00 3.48 794.00 0.17 3.32 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 794.98 0.17 8.38 0.00 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 796.47 0.17 13.43 0.01 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0077 6.97 0.00 0.00 0.00 0.00 0.00 6.97 797.96 0.17 20.23 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 799.97 0.17 25.29 0.01 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 801.46 0.17 30.35 0.02 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 802.95 0.17 35.41 0.02 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0077 6.97 0.00 0.00 0.00 0.00 0.00 6.97 804.44 0.17 42.21 0.02 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0077 6.97 0.00 0.00 0.00 0.00 0.00 6.97 806.45 0.17 49.00 0.03 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0077 6.97 0.00 0.00 0.00 0.00 0.00 6.97 808.46 0.17 55.80 0.03 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0097 8.71 0.00 0.00 0.00 0.00 0.00 8.71 810.46 0.17 64.34 0.04 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0097 8.71 0.00 0.00 0.00 0.00 0.00 8.71 812.98 0.17 72.88 0.04 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0097 8.71 0.00 0.00 0.00 0.00 0.00 8.71 815.50 0.17 81.42 0.05 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0097 8.71 0.00 0.00 0.00 0.00 0.00 8.71 818.02 0.17 89.95 0.05 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0097 8.71 0.00 0.00 0.00 0.00 0.00 8.71 820.53 0.17 98.49 0.06 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0116 10.45 0.00 0.00 0.00 0.00 0.00 10.45 823.05 0.17 108.77 0.06 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0116 10.45 0.00 0.00 0.00 0.00 0.00 10.45 826.08 0.17 119.04 0.07 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0135 12.19 0.00 0.00 0.00 0.00 0.00 12.19 829.12 0.17 131.06 0.08 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0135 12.19 0.00 0.00 0.00 0.00 0.00 12.19 832.66 0.17 143.08 0.08 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0155 13.93 0.00 0.00 0.00 0.00 0.00 13.93 836.21 0.17 156.84 0.09 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0116 10.45 0.00 0.00 0.00 0.00 0.00 10.45 840.26 0.18 167.11 0.10 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0135 12.19 0.00 0.00 0.00 0.00 0.00 12.19 843.29 0.18 179.12 0.11 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0155 13.93 0.00 0.00 0.00 0.00 0.00 13.93 846.84 0.18 192.88 0.11 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0155 13.93 0.00 0.00 0.00 0.00 0.00 13.93 850.90 0.18 206.63 0.12 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0174 15.67 0.00 0.00 0.00 0.00 0.00 15.67 854.95 0.18 222.13 0.13 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0174 15.67 0.00 0.00 0.00 0.00 0.00 15.67 859.52 0.18 237.62 0.14 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0193 17.41 0.00 0.00 0.00 0.00 0.00 17.41 864.09 0.18 254.86 0.15 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0193 17.41 0.00 0.00 0.00 0.00 0.00 17.41 869.18 0.18 272.09 0.16 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0193 17.41 0.00 0.00 0.00 0.00 0.00 17.41 874.26 0.18 289.33 0.17 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0213 19.16 0.00 0.00 0.00 0.00 0.00 19.16 879.35 0.18 308.30 0.18 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0232 20.90 0.00 0.00 0.00 0.00 0.00 20.90 884.94 0.18 329.01 0.19 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0252 22.64 0.00 0.00 0.00 0.00 0.00 22.64 891.05 0.19 351.47 0.21 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0290 26.12 0.00 0.00 0.00 0.00 0.00 26.12 897.68 0.19 377.40 0.22 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0290 26.12 0.00 0.00 0.00 0.00 0.00 26.12 905.33 0.19 403.34 0.24 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0310 27.86 0.00 0.00 0.00 0.00 0.00 27.86 912.98 0.19 431.01 0.26 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0329 29.61 0.00 0.00 0.00 0.00 0.00 29.61 921.14 0.19 460.42 0.27 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0368 33.09 0.00 0.00 0.00 0.00 0.00 33.09 929.82 0.19 493.32 0.29 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0387 34.83 0.00 0.00 0.00 0.00 0.00 34.83 939.52 0.20 527.95 0.31 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0406 36.57 0.00 0.00 0.00 0.00 0.00 36.57 949.73 0.20 564.32 0.33 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0426 38.31 0.00 0.00 0.00 0.00 0.00 38.31 960.46 0.20 602.44 0.36 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0290 26.12 0.00 0.00 0.00 0.00 0.00 26.12 971.71 0.20 628.36 0.37 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0290 26.12 0.00 0.00 0.00 0.00 0.00 26.12 979.35 0.20 654.28 0.39 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0387 34.83 0.00 0.00 0.00 0.00 0.00 34.83 987.00 0.21 688.90 0.41 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0387 34.83 0.00 0.00 0.00 0.00 0.00 34.83 997.21 0.21 723.52 0.43 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0368 33.09 0.00 0.00 0.00 0.00 0.00 33.09 1007.42 0.21 756.40 0.45 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0368 33.09 0.00 0.00 0.00 0.00 0.00 33.09 1017.12 0.21 789.28 0.47 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0329 29.61 0.00 0.00 0.00 0.00 0.00 29.61 1026.82 0.21 818.67 0.48 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0348 31.35 0.00 0.00 0.00 0.00 0.00 31.35 1035.49 0.22 849.80 0.50 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0484 43.54 0.00 0.00 0.00 0.00 0.00 43.54 1044.67 0.22 893.12 0.53 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0503 45.28 0.00 0.00 0.00 0.00 0.00 45.28 1057.45 0.22 938.18 0.56 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0596 53.65 0.00 0.00 0.00 0.00 0.00 53.65 1070.74 0.22 991.61 0.59 0.00 0.00 671

6 of 6
13:00 2.9 0.59 0.50 N/A 0.0900 0.0862 77.62 0.00 0.00 0.00 0.00 0.00 77.62 1086.50 0.23 1068.99 0.63 0.00 0.00 13:15 3.4 0.69 0.49 N/A 0.1985 0.1902 171.16 0.00 0.00 0.00 0.00 0.00 171.16 1109.33 0.23 1239.92 0.73 0.00 0.00 13:30 3.4 0.69 0.48 N/A 0.2059 0.1973 177.55 0.00 0.00 0.00 0.00 0.00 177.55 1159.75 0.24 1417.23 0.84 0.00 0.00 13:45 2.3 0.46 0.47 0.42 0.0465 0.0445 40.05 0.00 0.00 0.00 0.00 0.00 40.05 1212.05 0.25 1457.03 0.86 0.00 0.00 14:00 2.3 0.46 0.47 0.42 0.0465 0.0445 40.05 0.00 0.00 0.00 0.00 0.00 40.05 1223.79 0.25 1496.83 0.89 0.00 0.00 14:15 2.7 0.55 0.46 N/A 0.0862 0.0826 74.30 0.00 0.00 0.00 0.00 0.00 74.30 1235.53 0.26 1570.87 0.93 0.00 0.00 14:30 2.6 0.53 0.45 N/A 0.0730 0.0699 62.93 0.00 0.00 0.00 0.00 0.00 62.93 1257.37 0.26 1633.54 0.97 0.00 0.00 14:45 2.6 0.53 0.45 N/A 0.0799 0.0766 68.90 0.00 0.00 0.00 0.00 0.00 68.90 1275.86 0.27 1702.17 1.01 0.00 0.00 15:00 2.5 0.51 0.44 N/A 0.0665 0.0637 57.35 0.00 0.00 0.00 0.00 0.00 57.35 1296.11 0.27 1759.26 1.04 0.00 0.00 15:15 2.4 0.48 0.43 N/A 0.0530 0.0508 45.72 0.00 0.00 0.00 0.00 0.00 45.72 1312.95 0.27 1804.71 1.07 0.00 0.00 15:30 2.3 0.46 0.43 0.42 0.0465 0.0445 40.05 0.00 0.00 0.00 0.00 0.00 40.05 1326.35 0.28 1844.49 1.09 0.00 0.00 15:45 1.9 0.38 0.42 0.35 0.0384 0.0368 33.09 0.00 0.00 0.00 0.00 0.00 33.09 1338.09 0.28 1877.30 1.11 0.00 0.00 16:00 1.9 0.38 0.41 0.35 0.0384 0.0368 33.09 0.00 0.00 0.00 0.00 0.00 33.09 1347.76 0.28 1910.10 1.13 0.00 0.00 16:15 0.4 0.08 0.41 0.07 0.0081 0.0077 6.97 0.00 0.00 0.00 0.00 0.00 6.97 1357.44 0.28 1916.79 1.13 0.00 0.00 16:30 0.4 0.08 0.40 0.07 0.0081 0.0077 6.97 0.00 0.00 0.00 0.00 0.00 6.97 1359.41 0.28 1923.47 1.14 0.00 0.00 16:45 0.3 0.06 0.39 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 1361.38 0.28 1928.41 1.14 0.00 0.00 17:00 0.3 0.06 0.39 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 1362.84 0.28 1933.35 1.14 0.00 0.00 17:15 0.5 0.10 0.38 0.09 0.0101 0.0097 8.71 0.00 0.00 0.00 0.00 0.00 8.71 1364.30 0.28 1941.77 1.15 0.00 0.00 17:30 0.5 0.10 0.38 0.09 0.0101 0.0097 8.71 0.00 0.00 0.00 0.00 0.00 8.71 1366.78 0.28 1950.20 1.15 0.00 0.00 17:45 0.5 0.10 0.37 0.09 0.0101 0.0097 8.71 0.00 0.00 0.00 0.00 0.00 8.71 1369.27 0.29 1958.62 1.16 0.00 0.00 18:00 0.4 0.08 0.37 0.07 0.0081 0.0077 6.97 0.00 0.00 0.00 0.00 0.00 6.97 1371.75 0.29 1965.30 1.16 0.00 0.00 18:15 0.4 0.08 0.36 0.07 0.0081 0.0077 6.97 0.00 0.00 0.00 0.00 0.00 6.97 1373.72 0.29 1971.98 1.17 0.00 0.00 18:30 0.4 0.08 0.35 0.07 0.0081 0.0077 6.97 0.00 0.00 0.00 0.00 0.00 6.97 1375.69 0.29 1978.66 1.17 0.00 0.00 18:45 0.3 0.06 0.35 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 1377.66 0.29 1983.60 1.17 0.00 0.00 19:00 0.2 0.04 0.34 0.04 0.0040 0.0039 3.48 0.00 0.00 0.00 0.00 0.00 3.48 1379.12 0.29 1986.79 1.18 0.00 0.00 19:15 0.3 0.06 0.34 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 1380.06 0.29 1991.73 1.18 0.00 0.00 19:30 0.4 0.08 0.34 0.07 0.0081 0.0077 6.97 0.00 0.00 0.00 0.00 0.00 6.97 1381.52 0.29 1998.41 1.18 0.00 0.00 19:45 0.3 0.06 0.33 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 1383.49 0.29 2003.34 1.19 0.00 0.00 20:00 0.2 0.04 0.33 0.04 0.0040 0.0039 3.48 0.00 0.00 0.00 0.00 0.00 3.48 1384.95 0.29 2006.54 1.19 0.00 0.00 20:15 0.3 0.06 0.32 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 1385.89 0.29 2011.47 1.19 0.00 0.00 20:30 0.3 0.06 0.32 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 1387.34 0.29 2016.41 1.19 0.00 0.00 20:45 0.3 0.06 0.31 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 1388.80 0.29 2021.34 1.20 0.00 0.00 21:00 0.2 0.04 0.31 0.04 0.0040 0.0039 3.48 0.00 0.00 0.00 0.00 0.00 3.48 1390.26 0.29 2024.54 1.20 0.00 0.00 21:15 0.3 0.06 0.31 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 1391.20 0.29 2029.47 1.20 0.00 0.00 21:30 0.2 0.04 0.30 0.04 0.0040 0.0039 3.48 0.00 0.00 0.00 0.00 0.00 3.48 1392.65 0.29 2032.66 1.20 0.00 0.00 21:45 0.3 0.06 0.30 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 1393.59 0.29 2037.60 1.21 0.00 0.00 22:00 0.2 0.04 0.30 0.04 0.0040 0.0039 3.48 0.00 0.00 0.00 0.00 0.00 3.48 1395.05 0.29 2040.79 1.21 0.00 0.00 22:15 0.3 0.06 0.29 0.05 0.0061 0.0058 5.22 0.00 0.00 0.00 0.00 0.00 5.22 1395.99 0.29 2045.72 1.21 0.00 0.00 22:30 0.2 0.04 0.29 0.04 0.0040 0.0039 3.48 0.00 0.00 0.00 0.00 0.00 3.48 1397.45 0.29 2048.92 1.21 0.00 0.00 22:45 0.2 0.04 0.29 0.04 0.0040 0.0039 3.48 0.00 0.00 0.00 0.00 0.00 3.48 1398.39 0.29 2052.11 1.21 0.00 0.00 23:00 0.2 0.04 0.29 0.04 0.0040 0.0039 3.48 0.00 0.00 0.00 0.00 0.00 3.48 1399.33 0.29 2055.30 1.22 0.00 0.00 23:15 0.2 0.04 0.28 0.04 0.0040 0.0039 3.48 0.00 0.00 0.00 0.00 0.00 3.48 1400.27 0.29 2058.49 1.22 0.00 0.00 23:30 0.2 0.04 0.28 0.04 0.0040 0.0039 3.48 0.00 0.00 0.00 0.00 0.00 3.48 1401.21 0.29 2061.68 1.22 0.00 0.00 23:45 0.2 0.04 0.28 0.04 0.0040 0.0039 3.48 0.00 0.00 0.00 0.00 0.00 3.48 1402.15 0.29 2064.87 1.22 0.00 0.00 24:00 0.2 0.04 0.28 0.04 0.0040 0.0039 3.48 0.00 0.00 0.00 0.00 0.00 3.48 1403.10 0.29 2068.06 1.22 0.00 0.00 0 0.00 0.28 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1404.04 0.29 2067.77 1.22 0.00 0.00 Total volume (cf)2090.08 Total Overflow (cf)0.00
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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=0.41ac+0.09ac typ street frontage=0.50ac

1.14 5/7/2024 LOT 12-FRONT
Drainage Area (ac.)0.5000 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 AND 0.09AC TYPICAL STREET FRONTAGE Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =2118 s.f.Bot. =756 s.f.Max. Depth (d)=3 Max. storage=4139.39 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.2557 76.71 0.00 0.00 0.00 0.00 0.00 76.71 756.00 0.05 76.66 0.06 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.4161 124.83 0.00 0.00 0.00 0.00 0.00 124.83 781.22 0.05 201.44 0.15 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 0.4598 137.95 0.00 0.00 0.00 0.00 0.00 137.95 822.28 0.06 339.33 0.25 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 0.4307 129.20 0.00 0.00 0.00 0.00 0.00 129.20 867.65 0.06 468.47 0.34 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 0.6785 203.56 0.00 0.00 0.00 0.00 0.00 203.56 910.14 0.06 671.97 0.49 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 0.7806 234.18 0.00 0.00 0.00 0.00 0.00 234.18 977.10 0.07 906.09 0.66 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 0.9410 282.30 0.00 0.00 0.00 0.00 0.00 282.30 1054.13 0.07 1188.31 0.86 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 1.0285 308.54 0.00 0.00 0.00 0.00 0.00 308.54 1147.00 0.08 1496.78 1.08 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 1.5096 452.89 0.00 0.00 0.00 0.00 0.00 452.89 1248.49 0.09 1949.58 1.41 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 2.2824 684.72 0.00 0.00 0.00 0.00 0.00 684.72 1397.48 0.10 2634.20 1.91 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 2.0637 619.11 0.00 0.00 0.00 0.00 0.00 619.11 1622.74 0.11 3253.20 2.36 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.3286 98.58 0.00 0.00 0.00 0.00 0.00 98.58 1826.41 0.13 3351.66 2.43 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1858.81 0.13 3351.53 2.43 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1858.77 0.13 3351.40 2.43 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1858.72 0.13 3351.27 2.43 0.00 0.00 Total volume (cf)3352.59 Total Overflow (cf)0.00
673
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0244 7.31 0.00 0.00 0.00 0.00 0.00 7.31 756.00 0.05 7.26 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0244 7.31 0.00 0.00 0.00 0.00 0.00 7.31 758.39 0.05 14.52 0.01 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 760.78 0.05 20.66 0.01 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0281 8.44 0.00 0.00 0.00 0.00 0.00 8.44 762.80 0.05 29.05 0.02 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0281 8.44 0.00 0.00 0.00 0.00 0.00 8.44 765.56 0.05 37.43 0.03 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 768.32 0.05 53.53 0.04 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0281 8.44 0.00 0.00 0.00 0.00 0.00 8.44 773.61 0.05 61.91 0.04 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 776.37 0.05 78.01 0.06 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 781.67 0.05 94.10 0.07 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0281 8.44 0.00 0.00 0.00 0.00 0.00 8.44 786.96 0.05 102.48 0.07 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0300 9.00 0.00 0.00 0.00 0.00 0.00 9.00 789.72 0.05 111.43 0.08 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 792.66 0.06 127.52 0.09 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.1288 38.65 0.00 0.00 0.00 0.00 0.00 38.65 797.96 0.06 166.12 0.12 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.1288 38.65 0.00 0.00 0.00 0.00 0.00 38.65 810.66 0.06 204.72 0.15 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.1288 38.65 0.00 0.00 0.00 0.00 0.00 38.65 823.36 0.06 243.31 0.18 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.0913 27.40 0.00 0.00 0.00 0.00 0.00 27.40 836.06 0.06 270.65 0.20 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.2039 61.16 0.00 0.00 0.00 0.00 0.00 61.16 845.05 0.06 331.75 0.24 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.2226 66.79 0.00 0.00 0.00 0.00 0.00 66.79 865.16 0.06 398.48 0.29 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.1664 49.91 0.00 0.00 0.00 0.00 0.00 49.91 887.11 0.06 448.32 0.32 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.2226 66.79 0.00 0.00 0.00 0.00 0.00 66.79 903.51 0.06 515.05 0.37 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.3351 100.54 0.00 0.00 0.00 0.00 0.00 100.54 925.47 0.06 615.53 0.45 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.2976 89.29 0.00 0.00 0.00 0.00 0.00 89.29 958.53 0.07 704.75 0.51 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.2601 78.04 0.00 0.00 0.00 0.00 0.00 78.04 987.89 0.07 782.72 0.57 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.2789 83.66 0.00 0.00 0.00 0.00 0.00 83.66 1013.54 0.07 866.32 0.63 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.2976 89.29 0.00 0.00 0.00 0.00 0.00 89.29 1041.05 0.07 955.53 0.69 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 0.5039 151.18 0.00 0.00 0.00 0.00 0.00 151.18 1070.40 0.07 1106.64 0.80 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 0.6540 196.19 0.00 0.00 0.00 0.00 0.00 196.19 1120.12 0.08 1302.76 0.94 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.3727 111.80 0.00 0.00 0.00 0.00 0.00 111.80 1184.65 0.08 1414.48 1.03 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 0.9916 297.47 0.00 0.00 0.00 0.00 0.00 297.47 1221.41 0.08 1711.86 1.24 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 1.0853 325.60 0.00 0.00 0.00 0.00 0.00 325.60 1319.26 0.09 2037.38 1.48 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 1.2541 376.24 0.00 0.00 0.00 0.00 0.00 376.24 1426.37 0.10 2413.52 1.75 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 0.8228 246.83 0.00 0.00 0.00 0.00 0.00 246.83 1550.13 0.11 2660.24 1.93 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.0913 27.40 0.00 0.00 0.00 0.00 0.00 27.40 1631.31 0.11 2687.53 1.95 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 1640.29 0.11 2703.56 1.96 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.0538 16.15 0.00 0.00 0.00 0.00 0.00 16.15 1645.56 0.11 2719.60 1.97 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0113 3.38 0.00 0.00 0.00 0.00 0.00 3.38 1650.84 0.11 2722.86 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.91 0.11 2722.74 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.88 0.11 2722.63 1.97 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.84 0.11 2722.51 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.80 0.11 2722.40 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.76 0.11 2722.28 1.97 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.72 0.11 2722.17 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.69 0.11 2722.05 1.97 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1651.65 0.11 2721.94 1.97 0.00 0.00 Total volume (cf)2725.39 Total Overflow (cf)0.00
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6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0115 3.44 0.00 0.00 0.00 0.00 0.00 3.44 756.00 0.05 3.39 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0138 4.13 0.00 0.00 0.00 0.00 0.00 4.13 757.11 0.05 7.46 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0138 4.13 0.00 0.00 0.00 0.00 0.00 4.13 758.46 0.05 11.54 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0138 4.13 0.00 0.00 0.00 0.00 0.00 4.13 759.80 0.05 15.61 0.01 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0138 4.13 0.00 0.00 0.00 0.00 0.00 4.13 761.14 0.05 19.69 0.01 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 762.48 0.05 24.45 0.02 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 764.04 0.05 29.21 0.02 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 765.61 0.05 33.97 0.02 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 767.18 0.05 38.73 0.03 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 768.74 0.05 43.50 0.03 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0161 4.82 0.00 0.00 0.00 0.00 0.00 4.82 770.31 0.05 48.26 0.03 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 771.88 0.05 53.71 0.04 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 773.67 0.05 59.16 0.04 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 775.46 0.05 64.61 0.05 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 777.26 0.05 70.05 0.05 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 779.05 0.05 75.50 0.05 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 780.84 0.05 80.95 0.06 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 782.64 0.05 86.40 0.06 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 784.43 0.05 91.85 0.07 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 786.22 0.05 97.30 0.07 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 788.01 0.05 102.75 0.07 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 789.81 0.05 108.19 0.08 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 791.60 0.05 113.64 0.08 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 793.39 0.06 119.78 0.09 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0183 5.50 0.00 0.00 0.00 0.00 0.00 5.50 795.41 0.06 125.23 0.09 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 797.20 0.06 131.36 0.10 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 799.22 0.06 137.50 0.10 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 801.24 0.06 143.63 0.10 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 803.26 0.06 149.77 0.11 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 805.28 0.06 155.90 0.11 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 807.30 0.06 162.04 0.12 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0206 6.19 0.00 0.00 0.00 0.00 0.00 6.19 809.32 0.06 168.17 0.12 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 811.33 0.06 175.00 0.13 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 813.58 0.06 181.82 0.13 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 815.82 0.06 188.64 0.14 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 818.07 0.06 195.46 0.14 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0229 6.88 0.00 0.00 0.00 0.00 0.00 6.88 820.31 0.06 202.28 0.15 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0252 7.57 0.00 0.00 0.00 0.00 0.00 7.57 822.56 0.06 209.79 0.15 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0252 7.57 0.00 0.00 0.00 0.00 0.00 7.57 825.03 0.06 217.30 0.16 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0252 7.57 0.00 0.00 0.00 0.00 0.00 7.57 827.50 0.06 224.81 0.16 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0275 8.25 0.00 0.00 0.00 0.00 0.00 8.25 829.97 0.06 233.01 0.17 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0298 8.94 0.00 0.00 0.00 0.00 0.00 8.94 832.67 0.06 241.89 0.18 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0372 11.17 0.00 0.00 0.00 0.00 0.00 11.17 835.59 0.06 253.01 0.18 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0372 11.17 0.00 0.00 0.00 0.00 0.00 11.17 839.25 0.06 264.12 0.19 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.0602 18.05 0.00 0.00 0.00 0.00 0.00 18.05 842.91 0.06 282.12 0.20 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.0602 18.05 0.00 0.00 0.00 0.00 0.00 18.05 848.83 0.06 300.11 0.22 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.0831 24.93 0.00 0.00 0.00 0.00 0.00 24.93 854.75 0.06 324.98 0.24 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.0831 24.93 0.00 0.00 0.00 0.00 0.00 24.93 862.93 0.06 349.86 0.25 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.1060 31.81 0.00 0.00 0.00 0.00 0.00 31.81 871.11 0.06 381.61 0.28 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.1290 38.69 0.00 0.00 0.00 0.00 0.00 38.69 881.56 0.06 420.23 0.30 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.1519 45.57 0.00 0.00 0.00 0.00 0.00 45.57 894.27 0.06 465.74 0.34 0.00 0.00 675

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24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0020 1.83 0.00 0.00 0.00 0.00 0.00 1.83 756.00 0.16 1.68 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 756.55 0.16 4.27 0.00 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 757.40 0.16 6.86 0.00 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 758.26 0.16 10.37 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 759.41 0.16 12.96 0.01 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 760.26 0.16 15.55 0.01 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0031 2.75 0.00 0.00 0.00 0.00 0.00 2.75 761.12 0.16 18.14 0.01 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 761.97 0.16 21.65 0.02 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 763.12 0.16 25.16 0.02 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0041 3.67 0.00 0.00 0.00 0.00 0.00 3.67 764.28 0.16 28.66 0.02 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 765.43 0.16 33.09 0.02 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 766.89 0.16 37.51 0.03 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 768.34 0.16 41.93 0.03 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 769.80 0.16 46.36 0.03 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0051 4.58 0.00 0.00 0.00 0.00 0.00 4.58 771.25 0.16 50.78 0.04 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0061 5.50 0.00 0.00 0.00 0.00 0.00 5.50 772.71 0.16 56.12 0.04 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0061 5.50 0.00 0.00 0.00 0.00 0.00 5.50 774.46 0.16 61.45 0.04 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0071 6.42 0.00 0.00 0.00 0.00 0.00 6.42 776.22 0.16 67.71 0.05 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0071 6.42 0.00 0.00 0.00 0.00 0.00 6.42 778.28 0.16 73.96 0.05 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0081 7.33 0.00 0.00 0.00 0.00 0.00 7.33 780.34 0.16 81.13 0.06 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0061 5.50 0.00 0.00 0.00 0.00 0.00 5.50 782.70 0.16 86.47 0.06 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0071 6.42 0.00 0.00 0.00 0.00 0.00 6.42 784.45 0.16 92.72 0.07 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0081 7.33 0.00 0.00 0.00 0.00 0.00 7.33 786.51 0.16 99.89 0.07 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0081 7.33 0.00 0.00 0.00 0.00 0.00 7.33 788.87 0.16 107.06 0.08 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0092 8.25 0.00 0.00 0.00 0.00 0.00 8.25 791.23 0.16 115.14 0.08 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0092 8.25 0.00 0.00 0.00 0.00 0.00 8.25 793.89 0.17 123.23 0.09 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 796.55 0.17 132.23 0.10 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 799.51 0.17 141.23 0.10 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0102 9.17 0.00 0.00 0.00 0.00 0.00 9.17 802.47 0.17 150.22 0.11 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0112 10.08 0.00 0.00 0.00 0.00 0.00 10.08 805.43 0.17 160.14 0.12 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0122 11.00 0.00 0.00 0.00 0.00 0.00 11.00 808.69 0.17 170.97 0.12 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0132 11.92 0.00 0.00 0.00 0.00 0.00 11.92 812.25 0.17 182.72 0.13 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 816.12 0.17 196.29 0.14 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 820.59 0.17 209.87 0.15 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0163 14.67 0.00 0.00 0.00 0.00 0.00 14.67 825.06 0.17 224.37 0.16 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0173 15.58 0.00 0.00 0.00 0.00 0.00 15.58 829.82 0.17 239.77 0.17 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0193 17.41 0.00 0.00 0.00 0.00 0.00 17.41 834.89 0.17 257.02 0.19 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 840.57 0.18 275.17 0.20 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0214 19.25 0.00 0.00 0.00 0.00 0.00 19.25 846.54 0.18 294.24 0.21 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0224 20.16 0.00 0.00 0.00 0.00 0.00 20.16 852.82 0.18 314.23 0.23 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 859.39 0.18 327.80 0.24 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0153 13.75 0.00 0.00 0.00 0.00 0.00 13.75 863.86 0.18 341.37 0.25 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 868.32 0.18 359.52 0.26 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0204 18.33 0.00 0.00 0.00 0.00 0.00 18.33 874.29 0.18 377.67 0.27 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0193 17.41 0.00 0.00 0.00 0.00 0.00 17.41 880.27 0.18 394.90 0.29 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0193 17.41 0.00 0.00 0.00 0.00 0.00 17.41 885.94 0.18 412.13 0.30 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0173 15.58 0.00 0.00 0.00 0.00 0.00 15.58 891.60 0.19 427.53 0.31 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0183 16.50 0.00 0.00 0.00 0.00 0.00 16.50 896.67 0.19 443.84 0.32 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0255 22.91 0.00 0.00 0.00 0.00 0.00 22.91 902.04 0.19 466.56 0.34 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0265 23.83 0.00 0.00 0.00 0.00 0.00 23.83 909.52 0.19 490.21 0.36 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0314 28.24 0.00 0.00 0.00 0.00 0.00 28.24 917.29 0.19 518.25 0.38 0.00 0.00 677

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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=1.14ac
5/7/2024 LOT 12-BACK
Drainage Area (ac.)1.1400 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =3132 s.f.Bot. =947 s.f.Max. Depth (d)=4 Max. storage=7734.95 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.5830 174.91 0.00 0.00 0.00 0.00 0.00 174.91 947.00 0.07 174.84 0.09 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.9487 284.61 0.00 0.00 0.00 0.00 0.00 284.61 996.39 0.07 459.38 0.24 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 1.0484 314.53 0.00 0.00 0.00 0.00 0.00 314.53 1076.77 0.07 773.84 0.40 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 0.9819 294.58 0.00 0.00 0.00 0.00 0.00 294.58 1165.60 0.08 1068.34 0.55 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 1.5471 464.13 0.00 0.00 0.00 0.00 0.00 464.13 1248.79 0.09 1532.38 0.79 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 1.7798 533.94 0.00 0.00 0.00 0.00 0.00 533.94 1379.87 0.10 2066.22 1.07 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 2.1455 643.64 0.00 0.00 0.00 0.00 0.00 643.64 1530.67 0.11 2709.75 1.40 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 2.3449 703.48 0.00 0.00 0.00 0.00 0.00 703.48 1712.46 0.12 3413.11 1.77 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 3.4420 1032.59 0.00 0.00 0.00 0.00 0.00 1032.59 1911.15 0.13 4445.57 2.30 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 5.2039 1561.16 0.00 0.00 0.00 0.00 0.00 1561.16 2202.80 0.15 6006.58 3.11 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 4.7052 1411.57 0.00 0.00 0.00 0.00 0.00 1411.57 2643.76 0.18 7417.96 3.84 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.7492 224.77 0.00 0.00 0.00 0.00 0.00 224.77 3042.46 0.21 7642.52 3.95 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3105.89 0.22 7642.31 3.95 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3105.83 0.22 7642.09 3.95 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3105.77 0.22 7641.87 3.95 0.00 0.00 Total volume (cf)7643.90 Total Overflow (cf)0.00
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0556 16.68 0.00 0.00 0.00 0.00 0.00 16.68 947.00 0.07 16.61 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0556 16.68 0.00 0.00 0.00 0.00 0.00 16.68 951.69 0.07 33.22 0.02 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0470 14.11 0.00 0.00 0.00 0.00 0.00 14.11 956.38 0.07 47.27 0.02 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0641 19.24 0.00 0.00 0.00 0.00 0.00 19.24 960.35 0.07 66.44 0.03 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0641 19.24 0.00 0.00 0.00 0.00 0.00 19.24 965.77 0.07 85.62 0.04 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.1227 36.81 0.00 0.00 0.00 0.00 0.00 36.81 971.19 0.07 122.37 0.06 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0641 19.24 0.00 0.00 0.00 0.00 0.00 19.24 981.57 0.07 141.54 0.07 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.1227 36.81 0.00 0.00 0.00 0.00 0.00 36.81 986.98 0.07 178.29 0.09 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.1227 36.81 0.00 0.00 0.00 0.00 0.00 36.81 997.36 0.07 215.03 0.11 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0641 19.24 0.00 0.00 0.00 0.00 0.00 19.24 1007.74 0.07 234.20 0.12 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0684 20.53 0.00 0.00 0.00 0.00 0.00 20.53 1013.16 0.07 254.66 0.13 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.1227 36.81 0.00 0.00 0.00 0.00 0.00 36.81 1018.94 0.07 291.40 0.15 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.2938 88.13 0.00 0.00 0.00 0.00 0.00 88.13 1029.32 0.07 379.46 0.20 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.2938 88.13 0.00 0.00 0.00 0.00 0.00 88.13 1054.19 0.07 467.52 0.24 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.2938 88.13 0.00 0.00 0.00 0.00 0.00 88.13 1079.07 0.07 555.57 0.29 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.2082 62.47 0.00 0.00 0.00 0.00 0.00 62.47 1103.94 0.08 617.96 0.32 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.4648 139.44 0.00 0.00 0.00 0.00 0.00 139.44 1121.57 0.08 757.33 0.39 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.5076 152.27 0.00 0.00 0.00 0.00 0.00 152.27 1160.93 0.08 909.52 0.47 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.3793 113.79 0.00 0.00 0.00 0.00 0.00 113.79 1203.92 0.08 1023.22 0.53 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.5076 152.27 0.00 0.00 0.00 0.00 0.00 152.27 1236.04 0.09 1175.41 0.61 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.7641 229.24 0.00 0.00 0.00 0.00 0.00 229.24 1279.03 0.09 1404.56 0.73 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.6786 203.58 0.00 0.00 0.00 0.00 0.00 203.58 1343.77 0.09 1608.05 0.83 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.5931 177.93 0.00 0.00 0.00 0.00 0.00 177.93 1401.25 0.10 1785.88 0.92 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.6359 190.76 0.00 0.00 0.00 0.00 0.00 190.76 1451.48 0.10 1976.53 1.02 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.6786 203.58 0.00 0.00 0.00 0.00 0.00 203.58 1505.34 0.10 2180.01 1.13 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 1.1490 344.70 0.00 0.00 0.00 0.00 0.00 344.70 1562.82 0.11 2524.60 1.31 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 1.4911 447.32 0.00 0.00 0.00 0.00 0.00 447.32 1660.16 0.12 2971.81 1.54 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.8497 254.90 0.00 0.00 0.00 0.00 0.00 254.90 1786.49 0.12 3226.58 1.67 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 2.2608 678.24 0.00 0.00 0.00 0.00 0.00 678.24 1858.46 0.13 3904.69 2.02 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 2.4746 742.38 0.00 0.00 0.00 0.00 0.00 742.38 2050.01 0.14 4646.93 2.40 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 2.8594 857.83 0.00 0.00 0.00 0.00 0.00 857.83 2259.68 0.16 5504.60 2.85 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 1.8759 562.78 0.00 0.00 0.00 0.00 0.00 562.78 2501.96 0.17 6067.21 3.14 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.2082 62.47 0.00 0.00 0.00 0.00 0.00 62.47 2660.89 0.18 6129.50 3.17 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.1227 36.81 0.00 0.00 0.00 0.00 0.00 36.81 2678.49 0.19 6166.13 3.19 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.1227 36.81 0.00 0.00 0.00 0.00 0.00 36.81 2688.83 0.19 6202.75 3.21 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0257 7.70 0.00 0.00 0.00 0.00 0.00 7.70 2699.18 0.19 6210.26 3.21 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2701.30 0.19 6210.08 3.21 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2701.25 0.19 6209.89 3.21 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2701.20 0.19 6209.70 3.21 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2701.14 0.19 6209.51 3.21 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2701.09 0.19 6209.33 3.21 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2701.04 0.19 6209.14 3.21 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2700.98 0.19 6208.95 3.21 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2700.93 0.19 6208.76 3.21 0.00 0.00 Total volume (cf)6213.88 Total Overflow (cf)0.00
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6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0261 7.84 0.00 0.00 0.00 0.00 0.00 7.84 947.00 0.07 7.78 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0314 9.41 0.00 0.00 0.00 0.00 0.00 9.41 949.20 0.07 17.12 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0314 9.41 0.00 0.00 0.00 0.00 0.00 9.41 951.84 0.07 26.46 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0314 9.41 0.00 0.00 0.00 0.00 0.00 9.41 954.48 0.07 35.81 0.02 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0314 9.41 0.00 0.00 0.00 0.00 0.00 9.41 957.12 0.07 45.15 0.02 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0366 10.98 0.00 0.00 0.00 0.00 0.00 10.98 959.75 0.07 56.06 0.03 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0366 10.98 0.00 0.00 0.00 0.00 0.00 10.98 962.84 0.07 66.98 0.03 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0366 10.98 0.00 0.00 0.00 0.00 0.00 10.98 965.92 0.07 77.89 0.04 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0366 10.98 0.00 0.00 0.00 0.00 0.00 10.98 969.00 0.07 88.80 0.05 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0366 10.98 0.00 0.00 0.00 0.00 0.00 10.98 972.08 0.07 99.71 0.05 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0366 10.98 0.00 0.00 0.00 0.00 0.00 10.98 975.17 0.07 110.62 0.06 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0418 12.55 0.00 0.00 0.00 0.00 0.00 12.55 978.25 0.07 123.10 0.06 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0418 12.55 0.00 0.00 0.00 0.00 0.00 12.55 981.77 0.07 135.58 0.07 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0418 12.55 0.00 0.00 0.00 0.00 0.00 12.55 985.30 0.07 148.06 0.08 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0418 12.55 0.00 0.00 0.00 0.00 0.00 12.55 988.82 0.07 160.54 0.08 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0418 12.55 0.00 0.00 0.00 0.00 0.00 12.55 992.35 0.07 173.01 0.09 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0418 12.55 0.00 0.00 0.00 0.00 0.00 12.55 995.87 0.07 185.49 0.10 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0418 12.55 0.00 0.00 0.00 0.00 0.00 12.55 999.40 0.07 197.97 0.10 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0418 12.55 0.00 0.00 0.00 0.00 0.00 12.55 1002.92 0.07 210.45 0.11 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0418 12.55 0.00 0.00 0.00 0.00 0.00 12.55 1006.45 0.07 222.92 0.12 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0418 12.55 0.00 0.00 0.00 0.00 0.00 12.55 1009.97 0.07 235.40 0.12 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0418 12.55 0.00 0.00 0.00 0.00 0.00 12.55 1013.50 0.07 247.88 0.13 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0418 12.55 0.00 0.00 0.00 0.00 0.00 12.55 1017.02 0.07 260.35 0.13 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0471 14.12 0.00 0.00 0.00 0.00 0.00 14.12 1020.55 0.07 274.40 0.14 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0418 12.55 0.00 0.00 0.00 0.00 0.00 12.55 1024.51 0.07 286.87 0.15 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0471 14.12 0.00 0.00 0.00 0.00 0.00 14.12 1028.04 0.07 300.92 0.16 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0471 14.12 0.00 0.00 0.00 0.00 0.00 14.12 1032.00 0.07 314.96 0.16 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0471 14.12 0.00 0.00 0.00 0.00 0.00 14.12 1035.97 0.07 329.01 0.17 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0471 14.12 0.00 0.00 0.00 0.00 0.00 14.12 1039.94 0.07 343.05 0.18 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0471 14.12 0.00 0.00 0.00 0.00 0.00 14.12 1043.91 0.07 357.09 0.18 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0471 14.12 0.00 0.00 0.00 0.00 0.00 14.12 1047.87 0.07 371.13 0.19 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0471 14.12 0.00 0.00 0.00 0.00 0.00 14.12 1051.84 0.07 385.18 0.20 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0523 15.68 0.00 0.00 0.00 0.00 0.00 15.68 1055.81 0.07 400.79 0.21 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0523 15.68 0.00 0.00 0.00 0.00 0.00 15.68 1060.22 0.07 416.40 0.22 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0523 15.68 0.00 0.00 0.00 0.00 0.00 15.68 1064.63 0.07 432.01 0.22 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0523 15.68 0.00 0.00 0.00 0.00 0.00 15.68 1069.04 0.07 447.62 0.23 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0523 15.68 0.00 0.00 0.00 0.00 0.00 15.68 1073.44 0.07 463.23 0.24 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0575 17.25 0.00 0.00 0.00 0.00 0.00 17.25 1077.85 0.07 480.40 0.25 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0575 17.25 0.00 0.00 0.00 0.00 0.00 17.25 1082.71 0.08 497.58 0.26 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0575 17.25 0.00 0.00 0.00 0.00 0.00 17.25 1087.56 0.08 514.76 0.27 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0627 18.82 0.00 0.00 0.00 0.00 0.00 18.82 1092.41 0.08 533.50 0.28 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0680 20.39 0.00 0.00 0.00 0.00 0.00 20.39 1097.71 0.08 553.81 0.29 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0849 25.48 0.00 0.00 0.00 0.00 0.00 25.48 1103.44 0.08 579.21 0.30 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0849 25.48 0.00 0.00 0.00 0.00 0.00 25.48 1110.62 0.08 604.61 0.31 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.1372 41.16 0.00 0.00 0.00 0.00 0.00 41.16 1117.79 0.08 645.70 0.33 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.1372 41.16 0.00 0.00 0.00 0.00 0.00 41.16 1129.40 0.08 686.78 0.36 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.1895 56.84 0.00 0.00 0.00 0.00 0.00 56.84 1141.00 0.08 743.54 0.38 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.1895 56.84 0.00 0.00 0.00 0.00 0.00 56.84 1157.04 0.08 800.30 0.41 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.2418 72.53 0.00 0.00 0.00 0.00 0.00 72.53 1173.07 0.08 872.75 0.45 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.2940 88.21 0.00 0.00 0.00 0.00 0.00 88.21 1193.54 0.08 960.88 0.50 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.3463 103.90 0.00 0.00 0.00 0.00 0.00 103.90 1218.43 0.08 1064.69 0.55 0.00 0.00 681

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4:20 2 0.91 0.56 N/A 0.3468 0.3986 119.58 0.00 0.00 0.00 0.00 0.00 119.58 1247.76 0.09 1184.18 0.61 0.00 0.00 4:25 2.1 0.96 0.56 N/A 0.3922 0.4509 135.26 0.00 0.00 0.00 0.00 0.00 135.26 1281.51 0.09 1319.35 0.68 0.00 0.00 4:30 2.1 0.96 0.56 N/A 0.3922 0.4509 135.26 0.00 0.00 0.00 0.00 0.00 135.26 1319.70 0.09 1454.53 0.75 0.00 0.00 4:35 2.2 1.00 0.56 N/A 0.4377 0.5032 150.95 0.00 0.00 0.00 0.00 0.00 150.95 1357.88 0.09 1605.38 0.83 0.00 0.00 4:40 2.3 1.05 0.56 N/A 0.4832 0.5554 166.63 0.00 0.00 0.00 0.00 0.00 166.63 1400.49 0.10 1771.91 0.92 0.00 0.00 4:45 2.4 1.09 0.56 N/A 0.5287 0.6077 182.31 0.00 0.00 0.00 0.00 0.00 182.31 1447.54 0.10 1954.12 1.01 0.00 0.00 4:50 2.4 1.09 0.56 N/A 0.5287 0.6077 182.31 0.00 0.00 0.00 0.00 0.00 182.31 1499.01 0.10 2136.33 1.10 0.00 0.00 4:55 2.5 1.14 0.56 N/A 0.5742 0.6600 198.00 0.00 0.00 0.00 0.00 0.00 198.00 1550.48 0.11 2334.22 1.21 0.00 0.00 5:00 2.6 1.18 0.56 N/A 0.6196 0.7123 213.68 0.00 0.00 0.00 0.00 0.00 213.68 1606.38 0.11 2547.79 1.32 0.00 0.00 5:05 3.1 1.41 0.56 N/A 0.8470 0.9737 292.10 0.00 0.00 0.00 0.00 0.00 292.10 1666.71 0.12 2839.78 1.47 0.00 0.00 5:10 3.6 1.64 0.56 N/A 1.0744 1.2351 370.52 0.00 0.00 0.00 0.00 0.00 370.52 1749.19 0.12 3210.18 1.66 0.00 0.00 5:15 3.9 1.77 0.56 N/A 1.2109 1.3919 417.57 0.00 0.00 0.00 0.00 0.00 417.57 1853.82 0.13 3627.62 1.88 0.00 0.00 5:20 4.2 1.91 0.56 N/A 1.3473 1.5487 464.62 0.00 0.00 0.00 0.00 0.00 464.62 1971.74 0.14 4092.10 2.12 0.00 0.00 5:25 4.7 2.14 0.56 N/A 1.5747 1.8101 543.04 0.00 0.00 0.00 0.00 0.00 543.04 2102.95 0.15 4635.00 2.40 0.00 0.00 5:30 5.6 2.55 0.56 N/A 1.9840 2.2806 684.19 0.00 0.00 0.00 0.00 0.00 684.19 2256.31 0.16 5319.04 2.75 0.00 0.00 5:35 1.9 0.86 0.56 N/A 0.3013 0.3463 103.90 0.00 0.00 0.00 0.00 0.00 103.90 2449.54 0.17 5422.76 2.80 0.00 0.00 5:40 0.9 0.41 0.56 0.37 0.0409 0.0471 14.12 0.00 0.00 0.00 0.00 0.00 14.12 2478.84 0.17 5436.70 2.81 0.00 0.00 5:45 0.6 0.27 0.56 0.25 0.0273 0.0314 9.41 0.00 0.00 0.00 0.00 0.00 9.41 2482.78 0.17 5445.94 2.82 0.00 0.00 5:50 0.5 0.23 0.56 0.20 0.0227 0.0261 7.84 0.00 0.00 0.00 0.00 0.00 7.84 2485.39 0.17 5453.61 2.82 0.00 0.00 5:55 0.3 0.14 0.56 0.12 0.0136 0.0157 4.71 0.00 0.00 0.00 0.00 0.00 4.71 2487.56 0.17 5458.14 2.82 0.00 0.00 6:00 0.2 0.09 0.56 0.08 0.0091 0.0105 3.14 0.00 0.00 0.00 0.00 0.00 3.14 2488.84 0.17 5461.11 2.82 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2489.68 0.17 5460.93 2.82 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2489.63 0.17 5460.76 2.82 0.00 0.00 6:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2489.58 0.17 5460.59 2.82 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2489.53 0.17 5460.42 2.82 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2489.48 0.17 5460.24 2.82 0.00 0.00 6:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2489.43 0.17 5460.07 2.82 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2489.38 0.17 5459.90 2.82 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2489.33 0.17 5459.72 2.82 0.00 0.00 6:45 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2489.29 0.17 5459.55 2.82 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2489.24 0.17 5459.38 2.82 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2489.19 0.17 5459.21 2.82 0.00 0.00 7:00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2489.14 0.17 5459.03 2.82 0.00 0.00 Total volume (cf)5467.51 Total Overflow (cf)0.00
682

5 of 6
24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0046 4.18 0.00 0.00 0.00 0.00 0.00 4.18 947.00 0.20 3.98 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 948.12 0.20 10.05 0.01 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 949.84 0.20 16.13 0.01 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0093 8.36 0.00 0.00 0.00 0.00 0.00 8.36 951.56 0.20 24.29 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 953.86 0.20 30.36 0.02 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 955.58 0.20 36.43 0.02 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 957.29 0.20 42.50 0.02 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0093 8.36 0.00 0.00 0.00 0.00 0.00 8.36 959.00 0.20 50.66 0.03 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0093 8.36 0.00 0.00 0.00 0.00 0.00 8.36 961.31 0.20 58.82 0.03 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0093 8.36 0.00 0.00 0.00 0.00 0.00 8.36 963.61 0.20 66.97 0.03 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0116 10.45 0.00 0.00 0.00 0.00 0.00 10.45 965.92 0.20 77.22 0.04 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0116 10.45 0.00 0.00 0.00 0.00 0.00 10.45 968.81 0.20 87.47 0.05 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0116 10.45 0.00 0.00 0.00 0.00 0.00 10.45 971.71 0.20 97.72 0.05 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0116 10.45 0.00 0.00 0.00 0.00 0.00 10.45 974.60 0.20 107.96 0.06 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0116 10.45 0.00 0.00 0.00 0.00 0.00 10.45 977.50 0.20 118.21 0.06 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0139 12.54 0.00 0.00 0.00 0.00 0.00 12.54 980.39 0.20 130.54 0.07 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0139 12.54 0.00 0.00 0.00 0.00 0.00 12.54 983.88 0.20 142.87 0.07 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0163 14.63 0.00 0.00 0.00 0.00 0.00 14.63 987.36 0.21 157.30 0.08 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0163 14.63 0.00 0.00 0.00 0.00 0.00 14.63 991.43 0.21 171.72 0.09 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0186 16.72 0.00 0.00 0.00 0.00 0.00 16.72 995.51 0.21 188.23 0.10 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0139 12.54 0.00 0.00 0.00 0.00 0.00 12.54 1000.17 0.21 200.56 0.10 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0163 14.63 0.00 0.00 0.00 0.00 0.00 14.63 1003.66 0.21 214.98 0.11 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0186 16.72 0.00 0.00 0.00 0.00 0.00 16.72 1007.73 0.21 231.49 0.12 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0186 16.72 0.00 0.00 0.00 0.00 0.00 16.72 1012.39 0.21 248.00 0.13 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0209 18.81 0.00 0.00 0.00 0.00 0.00 18.81 1017.06 0.21 266.59 0.14 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0209 18.81 0.00 0.00 0.00 0.00 0.00 18.81 1022.31 0.21 285.19 0.15 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0232 20.90 0.00 0.00 0.00 0.00 0.00 20.90 1027.56 0.21 305.87 0.16 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0232 20.90 0.00 0.00 0.00 0.00 0.00 20.90 1033.40 0.22 326.55 0.17 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0232 20.90 0.00 0.00 0.00 0.00 0.00 20.90 1039.25 0.22 347.24 0.18 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0255 22.99 0.00 0.00 0.00 0.00 0.00 22.99 1045.09 0.22 370.01 0.19 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0279 25.08 0.00 0.00 0.00 0.00 0.00 25.08 1051.52 0.22 394.86 0.20 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0302 27.17 0.00 0.00 0.00 0.00 0.00 27.17 1058.54 0.22 421.81 0.22 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0348 31.35 0.00 0.00 0.00 0.00 0.00 31.35 1066.15 0.22 452.94 0.23 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0348 31.35 0.00 0.00 0.00 0.00 0.00 31.35 1074.95 0.22 484.06 0.25 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0372 33.44 0.00 0.00 0.00 0.00 0.00 33.44 1083.74 0.23 517.27 0.27 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0395 35.53 0.00 0.00 0.00 0.00 0.00 35.53 1093.12 0.23 552.57 0.29 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0441 39.71 0.00 0.00 0.00 0.00 0.00 39.71 1103.09 0.23 592.04 0.31 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0464 41.80 0.00 0.00 0.00 0.00 0.00 41.80 1114.24 0.23 633.61 0.33 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0488 43.89 0.00 0.00 0.00 0.00 0.00 43.89 1125.98 0.23 677.26 0.35 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0511 45.98 0.00 0.00 0.00 0.00 0.00 45.98 1138.31 0.24 723.00 0.37 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0348 31.35 0.00 0.00 0.00 0.00 0.00 31.35 1151.24 0.24 754.10 0.39 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0348 31.35 0.00 0.00 0.00 0.00 0.00 31.35 1160.02 0.24 785.21 0.41 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0464 41.80 0.00 0.00 0.00 0.00 0.00 41.80 1168.81 0.24 826.76 0.43 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0464 41.80 0.00 0.00 0.00 0.00 0.00 41.80 1180.55 0.25 868.31 0.45 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0441 39.71 0.00 0.00 0.00 0.00 0.00 39.71 1192.28 0.25 907.77 0.47 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0441 39.71 0.00 0.00 0.00 0.00 0.00 39.71 1203.43 0.25 947.22 0.49 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0395 35.53 0.00 0.00 0.00 0.00 0.00 35.53 1214.58 0.25 982.50 0.51 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0418 37.62 0.00 0.00 0.00 0.00 0.00 37.62 1224.54 0.26 1019.86 0.53 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0580 52.24 0.00 0.00 0.00 0.00 0.00 52.24 1235.09 0.26 1071.85 0.55 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0604 54.33 0.00 0.00 0.00 0.00 0.00 54.33 1249.78 0.26 1125.92 0.58 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0715 64.38 0.00 0.00 0.00 0.00 0.00 64.38 1265.05 0.26 1190.04 0.62 0.00 0.00 683

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13:00 2.9 0.59 0.50 N/A 0.0900 0.1035 93.14 0.00 0.00 0.00 0.00 0.00 93.14 1283.17 0.27 1282.91 0.66 0.00 0.00 13:15 3.4 0.69 0.49 N/A 0.1985 0.2282 205.39 0.00 0.00 0.00 0.00 0.00 205.39 1309.40 0.27 1488.03 0.77 0.00 0.00 13:30 3.4 0.69 0.48 N/A 0.2059 0.2367 213.06 0.00 0.00 0.00 0.00 0.00 213.06 1367.34 0.28 1700.80 0.88 0.00 0.00 13:45 2.3 0.46 0.47 0.42 0.0465 0.0534 48.07 0.00 0.00 0.00 0.00 0.00 48.07 1427.45 0.30 1748.57 0.90 0.00 0.00 14:00 2.3 0.46 0.47 0.42 0.0465 0.0534 48.07 0.00 0.00 0.00 0.00 0.00 48.07 1440.94 0.30 1796.33 0.93 0.00 0.00 14:15 2.7 0.55 0.46 N/A 0.0862 0.0991 89.16 0.00 0.00 0.00 0.00 0.00 89.16 1454.44 0.30 1885.19 0.97 0.00 0.00 14:30 2.6 0.53 0.45 N/A 0.0730 0.0839 75.52 0.00 0.00 0.00 0.00 0.00 75.52 1479.54 0.31 1960.40 1.01 0.00 0.00 14:45 2.6 0.53 0.45 N/A 0.0799 0.0919 82.67 0.00 0.00 0.00 0.00 0.00 82.67 1500.78 0.31 2042.76 1.06 0.00 0.00 15:00 2.5 0.51 0.44 N/A 0.0665 0.0765 68.83 0.00 0.00 0.00 0.00 0.00 68.83 1524.05 0.32 2111.27 1.09 0.00 0.00 15:15 2.4 0.48 0.43 N/A 0.0530 0.0610 54.87 0.00 0.00 0.00 0.00 0.00 54.87 1543.40 0.32 2165.82 1.12 0.00 0.00 15:30 2.3 0.46 0.43 0.42 0.0465 0.0534 48.07 0.00 0.00 0.00 0.00 0.00 48.07 1558.81 0.32 2213.56 1.14 0.00 0.00 15:45 1.9 0.38 0.42 0.35 0.0384 0.0441 39.71 0.00 0.00 0.00 0.00 0.00 39.71 1572.30 0.33 2252.94 1.17 0.00 0.00 16:00 1.9 0.38 0.41 0.35 0.0384 0.0441 39.71 0.00 0.00 0.00 0.00 0.00 39.71 1583.42 0.33 2292.31 1.19 0.00 0.00 16:15 0.4 0.08 0.41 0.07 0.0081 0.0093 8.36 0.00 0.00 0.00 0.00 0.00 8.36 1594.54 0.33 2300.34 1.19 0.00 0.00 16:30 0.4 0.08 0.40 0.07 0.0081 0.0093 8.36 0.00 0.00 0.00 0.00 0.00 8.36 1596.81 0.33 2308.37 1.19 0.00 0.00 16:45 0.3 0.06 0.39 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 1599.08 0.33 2314.30 1.20 0.00 0.00 17:00 0.3 0.06 0.39 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 1600.75 0.33 2320.24 1.20 0.00 0.00 17:15 0.5 0.10 0.38 0.09 0.0101 0.0116 10.45 0.00 0.00 0.00 0.00 0.00 10.45 1602.43 0.33 2330.35 1.21 0.00 0.00 17:30 0.5 0.10 0.38 0.09 0.0101 0.0116 10.45 0.00 0.00 0.00 0.00 0.00 10.45 1605.29 0.33 2340.47 1.21 0.00 0.00 17:45 0.5 0.10 0.37 0.09 0.0101 0.0116 10.45 0.00 0.00 0.00 0.00 0.00 10.45 1608.15 0.34 2350.58 1.22 0.00 0.00 18:00 0.4 0.08 0.37 0.07 0.0081 0.0093 8.36 0.00 0.00 0.00 0.00 0.00 8.36 1611.00 0.34 2358.61 1.22 0.00 0.00 18:15 0.4 0.08 0.36 0.07 0.0081 0.0093 8.36 0.00 0.00 0.00 0.00 0.00 8.36 1613.27 0.34 2366.63 1.22 0.00 0.00 18:30 0.4 0.08 0.35 0.07 0.0081 0.0093 8.36 0.00 0.00 0.00 0.00 0.00 8.36 1615.54 0.34 2374.65 1.23 0.00 0.00 18:45 0.3 0.06 0.35 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 1617.80 0.34 2380.58 1.23 0.00 0.00 19:00 0.2 0.04 0.34 0.04 0.0040 0.0046 4.18 0.00 0.00 0.00 0.00 0.00 4.18 1619.48 0.34 2384.43 1.23 0.00 0.00 19:15 0.3 0.06 0.34 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 1620.56 0.34 2390.36 1.24 0.00 0.00 19:30 0.4 0.08 0.34 0.07 0.0081 0.0093 8.36 0.00 0.00 0.00 0.00 0.00 8.36 1622.24 0.34 2398.38 1.24 0.00 0.00 19:45 0.3 0.06 0.33 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 1624.50 0.34 2404.31 1.24 0.00 0.00 20:00 0.2 0.04 0.33 0.04 0.0040 0.0046 4.18 0.00 0.00 0.00 0.00 0.00 4.18 1626.18 0.34 2408.15 1.25 0.00 0.00 20:15 0.3 0.06 0.32 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 1627.26 0.34 2414.08 1.25 0.00 0.00 20:30 0.3 0.06 0.32 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 1628.94 0.34 2420.01 1.25 0.00 0.00 20:45 0.3 0.06 0.31 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 1630.61 0.34 2425.94 1.25 0.00 0.00 21:00 0.2 0.04 0.31 0.04 0.0040 0.0046 4.18 0.00 0.00 0.00 0.00 0.00 4.18 1632.29 0.34 2429.78 1.26 0.00 0.00 21:15 0.3 0.06 0.31 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 1633.37 0.34 2435.71 1.26 0.00 0.00 21:30 0.2 0.04 0.30 0.04 0.0040 0.0046 4.18 0.00 0.00 0.00 0.00 0.00 4.18 1635.05 0.34 2439.55 1.26 0.00 0.00 21:45 0.3 0.06 0.30 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 1636.13 0.34 2445.48 1.26 0.00 0.00 22:00 0.2 0.04 0.30 0.04 0.0040 0.0046 4.18 0.00 0.00 0.00 0.00 0.00 4.18 1637.81 0.34 2449.32 1.27 0.00 0.00 22:15 0.3 0.06 0.29 0.05 0.0061 0.0070 6.27 0.00 0.00 0.00 0.00 0.00 6.27 1638.89 0.34 2455.24 1.27 0.00 0.00 22:30 0.2 0.04 0.29 0.04 0.0040 0.0046 4.18 0.00 0.00 0.00 0.00 0.00 4.18 1640.57 0.34 2459.08 1.27 0.00 0.00 22:45 0.2 0.04 0.29 0.04 0.0040 0.0046 4.18 0.00 0.00 0.00 0.00 0.00 4.18 1641.65 0.34 2462.92 1.27 0.00 0.00 23:00 0.2 0.04 0.29 0.04 0.0040 0.0046 4.18 0.00 0.00 0.00 0.00 0.00 4.18 1642.74 0.34 2466.76 1.28 0.00 0.00 23:15 0.2 0.04 0.28 0.04 0.0040 0.0046 4.18 0.00 0.00 0.00 0.00 0.00 4.18 1643.82 0.34 2470.59 1.28 0.00 0.00 23:30 0.2 0.04 0.28 0.04 0.0040 0.0046 4.18 0.00 0.00 0.00 0.00 0.00 4.18 1644.90 0.34 2474.43 1.28 0.00 0.00 23:45 0.2 0.04 0.28 0.04 0.0040 0.0046 4.18 0.00 0.00 0.00 0.00 0.00 4.18 1645.99 0.34 2478.27 1.28 0.00 0.00 24:00 0.2 0.04 0.28 0.04 0.0040 0.0046 4.18 0.00 0.00 0.00 0.00 0.00 4.18 1647.07 0.34 2482.10 1.28 0.00 0.00 0 0.00 0.28 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1648.15 0.34 2481.76 1.28 0.00 0.00 Total volume (cf)2508.09 Total Overflow (cf)0.00
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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=1.03ac+0.09ac typ street frontage=1.12ac 5/7/2024 LOTs 13-15
Drainage Area (ac.)1.1200 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 AND 0.09AC TYPICAL STREET FRONTAGE Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =3234 s.f.Bot. =1078 s.f.Max. Depth (d)=4 Max. storage=8238.87 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.5728 171.84 0.00 0.00 0.00 0.00 0.00 171.84 1078.00 0.07 171.76 0.08 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.9321 279.62 0.00 0.00 0.00 0.00 0.00 279.62 1122.95 0.08 451.30 0.22 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 1.0300 309.01 0.00 0.00 0.00 0.00 0.00 309.01 1196.10 0.08 760.23 0.37 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 0.9647 289.42 0.00 0.00 0.00 0.00 0.00 289.42 1276.94 0.09 1049.56 0.51 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 1.5199 455.98 0.00 0.00 0.00 0.00 0.00 455.98 1352.65 0.09 1505.45 0.73 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 1.7486 524.57 0.00 0.00 0.00 0.00 0.00 524.57 1471.95 0.10 2029.91 0.99 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 2.1078 632.35 0.00 0.00 0.00 0.00 0.00 632.35 1609.20 0.11 2662.15 1.29 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 2.3038 691.14 0.00 0.00 0.00 0.00 0.00 691.14 1774.65 0.12 3353.16 1.63 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 3.3816 1014.47 0.00 0.00 0.00 0.00 0.00 1014.47 1955.48 0.14 4367.50 2.12 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 5.1126 1533.77 0.00 0.00 0.00 0.00 0.00 1533.77 2220.92 0.15 5901.12 2.87 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 4.6227 1386.80 0.00 0.00 0.00 0.00 0.00 1386.80 2622.24 0.18 7287.74 3.54 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.7361 220.83 0.00 0.00 0.00 0.00 0.00 220.83 2985.10 0.21 7508.36 3.65 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3042.84 0.21 7508.15 3.65 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3042.78 0.21 7507.94 3.65 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3042.73 0.21 7507.73 3.65 0.00 0.00 Total volume (cf)7509.80 Total Overflow (cf)0.00
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0546 16.38 0.00 0.00 0.00 0.00 0.00 16.38 1078.00 0.07 16.31 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0546 16.38 0.00 0.00 0.00 0.00 0.00 16.38 1082.27 0.08 32.62 0.02 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0462 13.86 0.00 0.00 0.00 0.00 0.00 13.86 1086.54 0.08 46.41 0.02 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0630 18.91 0.00 0.00 0.00 0.00 0.00 18.91 1090.14 0.08 65.24 0.03 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0630 18.91 0.00 0.00 0.00 0.00 0.00 18.91 1095.07 0.08 84.07 0.04 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.1206 36.17 0.00 0.00 0.00 0.00 0.00 36.17 1100.00 0.08 120.16 0.06 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0630 18.91 0.00 0.00 0.00 0.00 0.00 18.91 1109.44 0.08 138.99 0.07 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.1206 36.17 0.00 0.00 0.00 0.00 0.00 36.17 1114.37 0.08 175.08 0.09 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.1206 36.17 0.00 0.00 0.00 0.00 0.00 36.17 1123.82 0.08 211.17 0.10 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0630 18.91 0.00 0.00 0.00 0.00 0.00 18.91 1133.26 0.08 229.99 0.11 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0672 20.17 0.00 0.00 0.00 0.00 0.00 20.17 1138.19 0.08 250.08 0.12 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.1206 36.17 0.00 0.00 0.00 0.00 0.00 36.17 1143.44 0.08 286.17 0.14 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.2886 86.58 0.00 0.00 0.00 0.00 0.00 86.58 1152.89 0.08 372.67 0.18 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.2886 86.58 0.00 0.00 0.00 0.00 0.00 86.58 1175.52 0.08 459.17 0.22 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.2886 86.58 0.00 0.00 0.00 0.00 0.00 86.58 1198.16 0.08 545.67 0.26 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.2046 61.38 0.00 0.00 0.00 0.00 0.00 61.38 1220.80 0.08 606.96 0.29 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.4567 137.00 0.00 0.00 0.00 0.00 0.00 137.00 1236.83 0.09 743.87 0.36 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.4987 149.60 0.00 0.00 0.00 0.00 0.00 149.60 1272.66 0.09 893.38 0.43 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.3726 111.79 0.00 0.00 0.00 0.00 0.00 111.79 1311.79 0.09 1005.08 0.49 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.4987 149.60 0.00 0.00 0.00 0.00 0.00 149.60 1341.02 0.09 1154.59 0.56 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.7507 225.22 0.00 0.00 0.00 0.00 0.00 225.22 1380.14 0.10 1379.71 0.67 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.6667 200.01 0.00 0.00 0.00 0.00 0.00 200.01 1439.05 0.10 1579.62 0.77 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.5827 174.81 0.00 0.00 0.00 0.00 0.00 174.81 1491.37 0.10 1754.33 0.85 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.6247 187.41 0.00 0.00 0.00 0.00 0.00 187.41 1537.08 0.11 1941.63 0.94 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.6667 200.01 0.00 0.00 0.00 0.00 0.00 200.01 1586.10 0.11 2141.53 1.04 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 1.1288 338.65 0.00 0.00 0.00 0.00 0.00 338.65 1638.41 0.11 2480.07 1.20 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 1.4649 439.48 0.00 0.00 0.00 0.00 0.00 439.48 1727.00 0.12 2919.42 1.42 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.8348 250.43 0.00 0.00 0.00 0.00 0.00 250.43 1841.97 0.13 3169.72 1.54 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 2.2211 666.34 0.00 0.00 0.00 0.00 0.00 666.34 1907.47 0.13 3835.93 1.86 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 2.4312 729.35 0.00 0.00 0.00 0.00 0.00 729.35 2081.81 0.14 4565.14 2.22 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 2.8093 842.78 0.00 0.00 0.00 0.00 0.00 842.78 2272.63 0.16 5407.76 2.63 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 1.8430 552.91 0.00 0.00 0.00 0.00 0.00 552.91 2493.14 0.17 5960.50 2.89 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.2046 61.38 0.00 0.00 0.00 0.00 0.00 61.38 2637.78 0.18 6021.69 2.92 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.1206 36.17 0.00 0.00 0.00 0.00 0.00 36.17 2653.79 0.18 6057.67 2.94 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.1206 36.17 0.00 0.00 0.00 0.00 0.00 36.17 2663.21 0.18 6093.66 2.96 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0252 7.56 0.00 0.00 0.00 0.00 0.00 7.56 2672.63 0.19 6101.03 2.96 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2674.56 0.19 6100.85 2.96 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2674.51 0.19 6100.66 2.96 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2674.46 0.19 6100.48 2.96 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2674.41 0.19 6100.29 2.96 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2674.36 0.19 6100.10 2.96 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2674.31 0.19 6099.92 2.96 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2674.27 0.19 6099.73 2.96 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2674.22 0.19 6099.55 2.96 0.00 0.00 Total volume (cf)6104.87 Total Overflow (cf)0.00
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6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0257 7.70 0.00 0.00 0.00 0.00 0.00 7.70 1078.00 0.07 7.63 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0308 9.25 0.00 0.00 0.00 0.00 0.00 9.25 1080.00 0.07 16.80 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0308 9.25 0.00 0.00 0.00 0.00 0.00 9.25 1082.40 0.08 25.97 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0308 9.25 0.00 0.00 0.00 0.00 0.00 9.25 1084.80 0.08 35.14 0.02 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0308 9.25 0.00 0.00 0.00 0.00 0.00 9.25 1087.20 0.08 44.31 0.02 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0360 10.79 0.00 0.00 0.00 0.00 0.00 10.79 1089.60 0.08 55.02 0.03 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0360 10.79 0.00 0.00 0.00 0.00 0.00 10.79 1092.40 0.08 65.73 0.03 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0360 10.79 0.00 0.00 0.00 0.00 0.00 10.79 1095.20 0.08 76.44 0.04 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0360 10.79 0.00 0.00 0.00 0.00 0.00 10.79 1098.00 0.08 87.15 0.04 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0360 10.79 0.00 0.00 0.00 0.00 0.00 10.79 1100.81 0.08 97.86 0.05 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0360 10.79 0.00 0.00 0.00 0.00 0.00 10.79 1103.61 0.08 108.57 0.05 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0411 12.33 0.00 0.00 0.00 0.00 0.00 12.33 1106.41 0.08 120.82 0.06 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0411 12.33 0.00 0.00 0.00 0.00 0.00 12.33 1109.62 0.08 133.07 0.06 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0411 12.33 0.00 0.00 0.00 0.00 0.00 12.33 1112.82 0.08 145.32 0.07 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0411 12.33 0.00 0.00 0.00 0.00 0.00 12.33 1116.03 0.08 157.57 0.08 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0411 12.33 0.00 0.00 0.00 0.00 0.00 12.33 1119.23 0.08 169.82 0.08 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0411 12.33 0.00 0.00 0.00 0.00 0.00 12.33 1122.44 0.08 182.07 0.09 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0411 12.33 0.00 0.00 0.00 0.00 0.00 12.33 1125.64 0.08 194.31 0.09 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0411 12.33 0.00 0.00 0.00 0.00 0.00 12.33 1128.85 0.08 206.56 0.10 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0411 12.33 0.00 0.00 0.00 0.00 0.00 12.33 1132.05 0.08 218.81 0.11 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0411 12.33 0.00 0.00 0.00 0.00 0.00 12.33 1135.26 0.08 231.06 0.11 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0411 12.33 0.00 0.00 0.00 0.00 0.00 12.33 1138.47 0.08 243.31 0.12 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0411 12.33 0.00 0.00 0.00 0.00 0.00 12.33 1141.67 0.08 255.55 0.12 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0462 13.87 0.00 0.00 0.00 0.00 0.00 13.87 1144.88 0.08 269.34 0.13 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0411 12.33 0.00 0.00 0.00 0.00 0.00 12.33 1148.48 0.08 281.59 0.14 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0462 13.87 0.00 0.00 0.00 0.00 0.00 13.87 1151.69 0.08 295.38 0.14 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0462 13.87 0.00 0.00 0.00 0.00 0.00 13.87 1155.30 0.08 309.17 0.15 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0462 13.87 0.00 0.00 0.00 0.00 0.00 13.87 1158.90 0.08 322.95 0.16 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0462 13.87 0.00 0.00 0.00 0.00 0.00 13.87 1162.51 0.08 336.74 0.16 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0462 13.87 0.00 0.00 0.00 0.00 0.00 13.87 1166.12 0.08 350.53 0.17 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0462 13.87 0.00 0.00 0.00 0.00 0.00 13.87 1169.73 0.08 364.31 0.18 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0462 13.87 0.00 0.00 0.00 0.00 0.00 13.87 1173.34 0.08 378.10 0.18 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0514 15.41 0.00 0.00 0.00 0.00 0.00 15.41 1176.94 0.08 393.43 0.19 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0514 15.41 0.00 0.00 0.00 0.00 0.00 15.41 1180.95 0.08 408.75 0.20 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0514 15.41 0.00 0.00 0.00 0.00 0.00 15.41 1184.97 0.08 424.08 0.21 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0514 15.41 0.00 0.00 0.00 0.00 0.00 15.41 1188.98 0.08 439.41 0.21 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0514 15.41 0.00 0.00 0.00 0.00 0.00 15.41 1192.99 0.08 454.73 0.22 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0565 16.95 0.00 0.00 0.00 0.00 0.00 16.95 1197.00 0.08 471.60 0.23 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0565 16.95 0.00 0.00 0.00 0.00 0.00 16.95 1201.41 0.08 488.46 0.24 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0565 16.95 0.00 0.00 0.00 0.00 0.00 16.95 1205.82 0.08 505.33 0.25 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0616 18.49 0.00 0.00 0.00 0.00 0.00 18.49 1210.24 0.08 523.74 0.25 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0668 20.03 0.00 0.00 0.00 0.00 0.00 20.03 1215.05 0.08 543.68 0.26 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0834 25.03 0.00 0.00 0.00 0.00 0.00 25.03 1220.27 0.08 568.63 0.28 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0834 25.03 0.00 0.00 0.00 0.00 0.00 25.03 1226.80 0.09 593.57 0.29 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.1348 40.44 0.00 0.00 0.00 0.00 0.00 40.44 1233.33 0.09 633.92 0.31 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.1348 40.44 0.00 0.00 0.00 0.00 0.00 40.44 1243.89 0.09 674.27 0.33 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.1862 55.85 0.00 0.00 0.00 0.00 0.00 55.85 1254.45 0.09 730.03 0.35 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.1862 55.85 0.00 0.00 0.00 0.00 0.00 55.85 1269.04 0.09 785.79 0.38 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.2375 71.26 0.00 0.00 0.00 0.00 0.00 71.26 1283.63 0.09 856.96 0.42 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.2889 86.66 0.00 0.00 0.00 0.00 0.00 86.66 1302.25 0.09 943.53 0.46 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.3402 102.07 0.00 0.00 0.00 0.00 0.00 102.07 1324.91 0.09 1045.51 0.51 0.00 0.00 687

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4:20 2 0.91 0.56 N/A 0.3468 0.3916 117.48 0.00 0.00 0.00 0.00 0.00 117.48 1351.60 0.09 1162.90 0.56 0.00 0.00 4:25 2.1 0.96 0.56 N/A 0.3922 0.4430 132.89 0.00 0.00 0.00 0.00 0.00 132.89 1382.31 0.10 1295.69 0.63 0.00 0.00 4:30 2.1 0.96 0.56 N/A 0.3922 0.4430 132.89 0.00 0.00 0.00 0.00 0.00 132.89 1417.07 0.10 1428.48 0.69 0.00 0.00 4:35 2.2 1.00 0.56 N/A 0.4377 0.4943 148.30 0.00 0.00 0.00 0.00 0.00 148.30 1451.81 0.10 1576.68 0.77 0.00 0.00 4:40 2.3 1.05 0.56 N/A 0.4832 0.5457 163.71 0.00 0.00 0.00 0.00 0.00 163.71 1490.60 0.10 1740.28 0.84 0.00 0.00 4:45 2.4 1.09 0.56 N/A 0.5287 0.5971 179.12 0.00 0.00 0.00 0.00 0.00 179.12 1533.41 0.11 1919.29 0.93 0.00 0.00 4:50 2.4 1.09 0.56 N/A 0.5287 0.5971 179.12 0.00 0.00 0.00 0.00 0.00 179.12 1580.25 0.11 2098.30 1.02 0.00 0.00 4:55 2.5 1.14 0.56 N/A 0.5742 0.6484 194.52 0.00 0.00 0.00 0.00 0.00 194.52 1627.10 0.11 2292.71 1.11 0.00 0.00 5:00 2.6 1.18 0.56 N/A 0.6196 0.6998 209.93 0.00 0.00 0.00 0.00 0.00 209.93 1677.97 0.12 2502.53 1.21 0.00 0.00 5:05 3.1 1.41 0.56 N/A 0.8470 0.9566 286.98 0.00 0.00 0.00 0.00 0.00 286.98 1732.88 0.12 2789.38 1.35 0.00 0.00 5:10 3.6 1.64 0.56 N/A 1.0744 1.2134 364.02 0.00 0.00 0.00 0.00 0.00 364.02 1807.94 0.13 3153.27 1.53 0.00 0.00 5:15 3.9 1.77 0.56 N/A 1.2109 1.3675 410.24 0.00 0.00 0.00 0.00 0.00 410.24 1903.17 0.13 3563.39 1.73 0.00 0.00 5:20 4.2 1.91 0.56 N/A 1.3473 1.5216 456.47 0.00 0.00 0.00 0.00 0.00 456.47 2010.49 0.14 4019.72 1.95 0.00 0.00 5:25 4.7 2.14 0.56 N/A 1.5747 1.7784 533.51 0.00 0.00 0.00 0.00 0.00 533.51 2129.91 0.15 4553.08 2.21 0.00 0.00 5:30 5.6 2.55 0.56 N/A 1.9840 2.2406 672.19 0.00 0.00 0.00 0.00 0.00 672.19 2269.48 0.16 5225.12 2.54 0.00 0.00 5:35 1.9 0.86 0.56 N/A 0.3013 0.3402 102.07 0.00 0.00 0.00 0.00 0.00 102.07 2445.34 0.17 5327.02 2.59 0.00 0.00 5:40 0.9 0.41 0.56 0.37 0.0409 0.0462 13.87 0.00 0.00 0.00 0.00 0.00 13.87 2472.01 0.17 5340.72 2.59 0.00 0.00 5:45 0.6 0.27 0.56 0.25 0.0273 0.0308 9.25 0.00 0.00 0.00 0.00 0.00 9.25 2475.59 0.17 5349.79 2.60 0.00 0.00 5:50 0.5 0.23 0.56 0.20 0.0227 0.0257 7.70 0.00 0.00 0.00 0.00 0.00 7.70 2477.97 0.17 5357.32 2.60 0.00 0.00 5:55 0.3 0.14 0.56 0.12 0.0136 0.0154 4.62 0.00 0.00 0.00 0.00 0.00 4.62 2479.94 0.17 5361.77 2.60 0.00 0.00 6:00 0.2 0.09 0.56 0.08 0.0091 0.0103 3.08 0.00 0.00 0.00 0.00 0.00 3.08 2481.10 0.17 5364.68 2.60 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2481.86 0.17 5364.51 2.60 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2481.82 0.17 5364.34 2.60 0.00 0.00 6:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2481.77 0.17 5364.16 2.60 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2481.73 0.17 5363.99 2.60 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2481.68 0.17 5363.82 2.60 0.00 0.00 6:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2481.64 0.17 5363.65 2.60 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2481.59 0.17 5363.48 2.60 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2481.55 0.17 5363.30 2.60 0.00 0.00 6:45 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2481.50 0.17 5363.13 2.60 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2481.46 0.17 5362.96 2.60 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2481.41 0.17 5362.79 2.60 0.00 0.00 7:00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2481.37 0.17 5362.61 2.60 0.00 0.00 Total volume (cf)5371.59 Total Overflow (cf)0.00
688

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24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0046 4.11 0.00 0.00 0.00 0.00 0.00 4.11 1078.00 0.22 3.88 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1079.02 0.22 9.82 0.00 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1080.57 0.23 15.75 0.01 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0091 8.21 0.00 0.00 0.00 0.00 0.00 8.21 1082.12 0.23 23.74 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1084.21 0.23 29.67 0.01 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1085.76 0.23 35.60 0.02 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1087.32 0.23 41.54 0.02 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0091 8.21 0.00 0.00 0.00 0.00 0.00 8.21 1088.87 0.23 49.52 0.02 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0091 8.21 0.00 0.00 0.00 0.00 0.00 8.21 1090.96 0.23 57.51 0.03 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0091 8.21 0.00 0.00 0.00 0.00 0.00 8.21 1093.05 0.23 65.49 0.03 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0114 10.27 0.00 0.00 0.00 0.00 0.00 10.27 1095.14 0.23 75.53 0.04 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0114 10.27 0.00 0.00 0.00 0.00 0.00 10.27 1097.77 0.23 85.57 0.04 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0114 10.27 0.00 0.00 0.00 0.00 0.00 10.27 1100.39 0.23 95.60 0.05 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0114 10.27 0.00 0.00 0.00 0.00 0.00 10.27 1103.02 0.23 105.64 0.05 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0114 10.27 0.00 0.00 0.00 0.00 0.00 10.27 1105.64 0.23 115.67 0.06 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0137 12.32 0.00 0.00 0.00 0.00 0.00 12.32 1108.27 0.23 127.76 0.06 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0137 12.32 0.00 0.00 0.00 0.00 0.00 12.32 1111.43 0.23 139.85 0.07 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0160 14.37 0.00 0.00 0.00 0.00 0.00 14.37 1114.60 0.23 153.99 0.07 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0160 14.37 0.00 0.00 0.00 0.00 0.00 14.37 1118.30 0.23 168.13 0.08 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0183 16.43 0.00 0.00 0.00 0.00 0.00 16.43 1122.00 0.23 184.32 0.09 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0137 12.32 0.00 0.00 0.00 0.00 0.00 12.32 1126.23 0.23 196.40 0.10 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0160 14.37 0.00 0.00 0.00 0.00 0.00 14.37 1129.40 0.24 210.54 0.10 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0183 16.43 0.00 0.00 0.00 0.00 0.00 16.43 1133.10 0.24 226.73 0.11 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0183 16.43 0.00 0.00 0.00 0.00 0.00 16.43 1137.33 0.24 242.92 0.12 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0205 18.48 0.00 0.00 0.00 0.00 0.00 18.48 1141.57 0.24 261.16 0.13 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0205 18.48 0.00 0.00 0.00 0.00 0.00 18.48 1146.34 0.24 279.40 0.14 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0228 20.53 0.00 0.00 0.00 0.00 0.00 20.53 1151.11 0.24 299.69 0.15 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0228 20.53 0.00 0.00 0.00 0.00 0.00 20.53 1156.42 0.24 319.98 0.16 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0228 20.53 0.00 0.00 0.00 0.00 0.00 20.53 1161.73 0.24 340.27 0.17 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0251 22.58 0.00 0.00 0.00 0.00 0.00 22.58 1167.04 0.24 362.61 0.18 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0274 24.64 0.00 0.00 0.00 0.00 0.00 24.64 1172.89 0.24 387.00 0.19 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0297 26.69 0.00 0.00 0.00 0.00 0.00 26.69 1179.27 0.25 413.45 0.20 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0342 30.80 0.00 0.00 0.00 0.00 0.00 30.80 1186.19 0.25 444.00 0.22 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0342 30.80 0.00 0.00 0.00 0.00 0.00 30.80 1194.19 0.25 474.55 0.23 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0365 32.85 0.00 0.00 0.00 0.00 0.00 32.85 1202.18 0.25 507.15 0.25 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0388 34.90 0.00 0.00 0.00 0.00 0.00 34.90 1210.71 0.25 541.80 0.26 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0433 39.01 0.00 0.00 0.00 0.00 0.00 39.01 1219.78 0.25 580.55 0.28 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0456 41.06 0.00 0.00 0.00 0.00 0.00 41.06 1229.92 0.26 621.36 0.30 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0479 43.12 0.00 0.00 0.00 0.00 0.00 43.12 1240.60 0.26 664.22 0.32 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0502 45.17 0.00 0.00 0.00 0.00 0.00 45.17 1251.82 0.26 709.12 0.34 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0342 30.80 0.00 0.00 0.00 0.00 0.00 30.80 1263.57 0.26 739.66 0.36 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0342 30.80 0.00 0.00 0.00 0.00 0.00 30.80 1271.56 0.26 770.19 0.37 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0456 41.06 0.00 0.00 0.00 0.00 0.00 41.06 1279.55 0.27 810.98 0.39 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0456 41.06 0.00 0.00 0.00 0.00 0.00 41.06 1290.22 0.27 851.78 0.41 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0433 39.01 0.00 0.00 0.00 0.00 0.00 39.01 1300.90 0.27 890.52 0.43 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0433 39.01 0.00 0.00 0.00 0.00 0.00 39.01 1311.04 0.27 929.25 0.45 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0388 34.90 0.00 0.00 0.00 0.00 0.00 34.90 1321.17 0.28 963.88 0.47 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0411 36.96 0.00 0.00 0.00 0.00 0.00 36.96 1330.23 0.28 1000.56 0.49 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0570 51.33 0.00 0.00 0.00 0.00 0.00 51.33 1339.83 0.28 1051.61 0.51 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0593 53.38 0.00 0.00 0.00 0.00 0.00 53.38 1353.19 0.28 1104.71 0.54 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0703 63.25 0.00 0.00 0.00 0.00 0.00 63.25 1367.09 0.28 1167.67 0.57 0.00 0.00 689

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13:00 2.9 0.59 0.50 N/A 0.0900 0.1017 91.50 0.00 0.00 0.00 0.00 0.00 91.50 1383.56 0.29 1258.89 0.61 0.00 0.00 13:15 3.4 0.69 0.49 N/A 0.1985 0.2242 201.79 0.00 0.00 0.00 0.00 0.00 201.79 1407.43 0.29 1460.39 0.71 0.00 0.00 13:30 3.4 0.69 0.48 N/A 0.2059 0.2326 209.32 0.00 0.00 0.00 0.00 0.00 209.32 1460.16 0.30 1669.40 0.81 0.00 0.00 13:45 2.3 0.46 0.47 0.42 0.0465 0.0525 47.22 0.00 0.00 0.00 0.00 0.00 47.22 1514.86 0.32 1716.31 0.83 0.00 0.00 14:00 2.3 0.46 0.47 0.42 0.0465 0.0525 47.22 0.00 0.00 0.00 0.00 0.00 47.22 1527.13 0.32 1763.21 0.86 0.00 0.00 14:15 2.7 0.55 0.46 N/A 0.0862 0.0973 87.60 0.00 0.00 0.00 0.00 0.00 87.60 1539.41 0.32 1850.48 0.90 0.00 0.00 14:30 2.6 0.53 0.45 N/A 0.0730 0.0824 74.20 0.00 0.00 0.00 0.00 0.00 74.20 1562.25 0.33 1924.35 0.93 0.00 0.00 14:45 2.6 0.53 0.45 N/A 0.0799 0.0902 81.22 0.00 0.00 0.00 0.00 0.00 81.22 1581.58 0.33 2005.25 0.97 0.00 0.00 15:00 2.5 0.51 0.44 N/A 0.0665 0.0751 67.62 0.00 0.00 0.00 0.00 0.00 67.62 1602.75 0.33 2072.53 1.01 0.00 0.00 15:15 2.4 0.48 0.43 N/A 0.0530 0.0599 53.91 0.00 0.00 0.00 0.00 0.00 53.91 1620.35 0.34 2126.10 1.03 0.00 0.00 15:30 2.3 0.46 0.43 0.42 0.0465 0.0525 47.22 0.00 0.00 0.00 0.00 0.00 47.22 1634.37 0.34 2172.98 1.05 0.00 0.00 15:45 1.9 0.38 0.42 0.35 0.0384 0.0433 39.01 0.00 0.00 0.00 0.00 0.00 39.01 1646.64 0.34 2211.65 1.07 0.00 0.00 16:00 1.9 0.38 0.41 0.35 0.0384 0.0433 39.01 0.00 0.00 0.00 0.00 0.00 39.01 1656.76 0.35 2250.32 1.09 0.00 0.00 16:15 0.4 0.08 0.41 0.07 0.0081 0.0091 8.21 0.00 0.00 0.00 0.00 0.00 8.21 1666.88 0.35 2258.18 1.10 0.00 0.00 16:30 0.4 0.08 0.40 0.07 0.0081 0.0091 8.21 0.00 0.00 0.00 0.00 0.00 8.21 1668.94 0.35 2266.05 1.10 0.00 0.00 16:45 0.3 0.06 0.39 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1670.99 0.35 2271.86 1.10 0.00 0.00 17:00 0.3 0.06 0.39 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1672.51 0.35 2277.67 1.11 0.00 0.00 17:15 0.5 0.10 0.38 0.09 0.0101 0.0114 10.27 0.00 0.00 0.00 0.00 0.00 10.27 1674.03 0.35 2287.58 1.11 0.00 0.00 17:30 0.5 0.10 0.38 0.09 0.0101 0.0114 10.27 0.00 0.00 0.00 0.00 0.00 10.27 1676.63 0.35 2297.50 1.12 0.00 0.00 17:45 0.5 0.10 0.37 0.09 0.0101 0.0114 10.27 0.00 0.00 0.00 0.00 0.00 10.27 1679.22 0.35 2307.42 1.12 0.00 0.00 18:00 0.4 0.08 0.37 0.07 0.0081 0.0091 8.21 0.00 0.00 0.00 0.00 0.00 8.21 1681.82 0.35 2315.28 1.12 0.00 0.00 18:15 0.4 0.08 0.36 0.07 0.0081 0.0091 8.21 0.00 0.00 0.00 0.00 0.00 8.21 1683.88 0.35 2323.14 1.13 0.00 0.00 18:30 0.4 0.08 0.35 0.07 0.0081 0.0091 8.21 0.00 0.00 0.00 0.00 0.00 8.21 1685.93 0.35 2331.00 1.13 0.00 0.00 18:45 0.3 0.06 0.35 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1687.99 0.35 2336.81 1.13 0.00 0.00 19:00 0.2 0.04 0.34 0.04 0.0040 0.0046 4.11 0.00 0.00 0.00 0.00 0.00 4.11 1689.51 0.35 2340.56 1.14 0.00 0.00 19:15 0.3 0.06 0.34 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1690.49 0.35 2346.37 1.14 0.00 0.00 19:30 0.4 0.08 0.34 0.07 0.0081 0.0091 8.21 0.00 0.00 0.00 0.00 0.00 8.21 1692.01 0.35 2354.23 1.14 0.00 0.00 19:45 0.3 0.06 0.33 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1694.07 0.35 2360.04 1.15 0.00 0.00 20:00 0.2 0.04 0.33 0.04 0.0040 0.0046 4.11 0.00 0.00 0.00 0.00 0.00 4.11 1695.59 0.35 2363.79 1.15 0.00 0.00 20:15 0.3 0.06 0.32 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1696.57 0.35 2369.60 1.15 0.00 0.00 20:30 0.3 0.06 0.32 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1698.09 0.35 2375.40 1.15 0.00 0.00 20:45 0.3 0.06 0.31 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1699.61 0.35 2381.21 1.16 0.00 0.00 21:00 0.2 0.04 0.31 0.04 0.0040 0.0046 4.11 0.00 0.00 0.00 0.00 0.00 4.11 1701.13 0.35 2384.96 1.16 0.00 0.00 21:15 0.3 0.06 0.31 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1702.11 0.35 2390.76 1.16 0.00 0.00 21:30 0.2 0.04 0.30 0.04 0.0040 0.0046 4.11 0.00 0.00 0.00 0.00 0.00 4.11 1703.63 0.35 2394.52 1.16 0.00 0.00 21:45 0.3 0.06 0.30 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1704.61 0.36 2400.32 1.17 0.00 0.00 22:00 0.2 0.04 0.30 0.04 0.0040 0.0046 4.11 0.00 0.00 0.00 0.00 0.00 4.11 1706.13 0.36 2404.07 1.17 0.00 0.00 22:15 0.3 0.06 0.29 0.05 0.0061 0.0068 6.16 0.00 0.00 0.00 0.00 0.00 6.16 1707.11 0.36 2409.87 1.17 0.00 0.00 22:30 0.2 0.04 0.29 0.04 0.0040 0.0046 4.11 0.00 0.00 0.00 0.00 0.00 4.11 1708.63 0.36 2413.62 1.17 0.00 0.00 22:45 0.2 0.04 0.29 0.04 0.0040 0.0046 4.11 0.00 0.00 0.00 0.00 0.00 4.11 1709.61 0.36 2417.37 1.17 0.00 0.00 23:00 0.2 0.04 0.29 0.04 0.0040 0.0046 4.11 0.00 0.00 0.00 0.00 0.00 4.11 1710.59 0.36 2421.12 1.18 0.00 0.00 23:15 0.2 0.04 0.28 0.04 0.0040 0.0046 4.11 0.00 0.00 0.00 0.00 0.00 4.11 1711.58 0.36 2424.87 1.18 0.00 0.00 23:30 0.2 0.04 0.28 0.04 0.0040 0.0046 4.11 0.00 0.00 0.00 0.00 0.00 4.11 1712.56 0.36 2428.62 1.18 0.00 0.00 23:45 0.2 0.04 0.28 0.04 0.0040 0.0046 4.11 0.00 0.00 0.00 0.00 0.00 4.11 1713.54 0.36 2432.37 1.18 0.00 0.00 24:00 0.2 0.04 0.28 0.04 0.0040 0.0046 4.11 0.00 0.00 0.00 0.00 0.00 4.11 1714.52 0.36 2436.12 1.18 0.00 0.00 0 0.00 0.28 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1715.50 0.36 2435.76 1.18 0.00 0.00 Total volume (cf)2464.09 Total Overflow (cf)0.00
690

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HYDROLOGY CALCULATIONS - program updated 4-14-22 LC
Using the RCFC&WCD Short Cut Unit Hydrograph Method
Area Designations Area 1 VERSION 2 Area=1.02ac+0.09ac typ street frontage=1.11ac 5/7/2024 LOT 16
Drainage Area (ac.)1.1100 JOB NUMBER 22106
Unit time (minutes)5 5 5 15
100 Year Storm Duration (hrs)1 3 6 24
Total Precipitation (Plates D-4.4,E-5.2, 5.4, 5.6)(in.)2.41 3.10 3.79 5.05 from NOAA interactive website Soils Group A
AMC index II Runoff Number (plate E-6.1)32
Plate E-6.2 Pervious Area Loss Rate (Fp)(in/hr)0.74 (AMC II) Percentage of Impervious Cover (Ai)(%) (plate E-6.3)26.6 20% per the RCFC Hydrology Manual 1AC LOT-PLATE D 5.6 AND 0.09AC TYPICAL STREET FRONTAGE Weighted Average Loss Rate (F=Fp(1-.9Ai))(in./hr.)0.56 (used for 1, 3, and 6 hour storm, the 24 hour storm uses variable maximum loss rate per plate E-1.1 (3 of 6)) Low Loss Rate Percent (%) 90
Retention Basin Percolation Rate (in/hr)0.01 (also used for drywell percolation rate) Percolation is taken incrementally.

Drywell design factors Upper sec. (ft.)=0.001 Lower sec. (ft.)=0.001 Ring diam. (ft.) =0.001 Drywell lower max. (cf)=0.00 Upper max.(cf)=0.00 Gravel bed width around drywell=0.001 Drywell total(cf)=0.00 Ret. Basin design (area, depth) Top =3234 s.f.Bot. =1078 s.f.Max. Depth (d)=4 Max. storage=8238.87 (d/3)*(bottom+top+(bottom*top)^0.50) Formulas vol=(h/3)*(bottom+top+(bottom*top)^0.50) area=bottom+(h/d)*(top-bottom)h=(vol*3)/(bottom+top+(bottom*top)^0.5)(values must be non-zero or error occurs) Outside input from:N/A 3.25
1 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 3.7 1.0700 0.5628 N/A 0.5072 0.5677 170.30 0.00 0.00 0.00 0.00 0.00 170.30 1078.00 0.07 170.23 0.08 0.00 0.00 0:10 4.8 1.3882 0.5628 N/A 0.8253 0.9237 277.12 0.00 0.00 0.00 0.00 0.00 277.12 1122.55 0.08 447.27 0.22 0.00 0.00 0:15 5.1 1.4749 0.5628 N/A 0.9121 1.0208 306.25 0.00 0.00 0.00 0.00 0.00 306.25 1195.04 0.08 753.44 0.37 0.00 0.00 0:20 4.9 1.4171 0.5628 N/A 0.8542 0.9561 286.83 0.00 0.00 0.00 0.00 0.00 286.83 1275.17 0.09 1040.18 0.51 0.00 0.00 0:25 6.6 1.9087 0.5628 N/A 1.3459 1.5064 451.91 0.00 0.00 0.00 0.00 0.00 451.91 1350.20 0.09 1492.00 0.72 0.00 0.00 0:30 7.3 2.1112 0.5628 N/A 1.5483 1.7330 519.89 0.00 0.00 0.00 0.00 0.00 519.89 1468.44 0.10 2011.78 0.98 0.00 0.00 0:35 8.4 2.4293 0.5628 N/A 1.8664 2.0890 626.70 0.00 0.00 0.00 0.00 0.00 626.70 1604.46 0.11 2638.38 1.28 0.00 0.00 0:40 9 2.6028 0.5628 N/A 2.0400 2.2832 684.97 0.00 0.00 0.00 0.00 0.00 684.97 1768.43 0.12 3323.22 1.61 0.00 0.00 0:45 12.3 3.5572 0.5628 N/A 2.9943 3.3514 1005.42 0.00 0.00 0.00 0.00 0.00 1005.42 1947.64 0.14 4328.50 2.10 0.00 0.00 0:50 17.6 5.0899 0.5628 N/A 4.5271 5.0669 1520.08 0.00 0.00 0.00 0.00 0.00 1520.08 2210.71 0.15 5848.43 2.84 0.00 0.00 0:55 16.1 4.6561 0.5628 N/A 4.0933 4.5814 1374.42 0.00 0.00 0.00 0.00 0.00 1374.42 2608.45 0.18 7222.66 3.51 0.00 0.00 1:00 4.2 1.2146 0.5628 N/A 0.6518 0.7295 218.86 0.00 0.00 0.00 0.00 0.00 218.86 2968.07 0.21 7441.32 3.61 0.00 0.00 MAX DEPTH 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3025.29 0.21 7441.11 3.61 0.00 0.00 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3025.24 0.21 7440.90 3.61 0.00 0.00 1:15 0 0.0000 0.5628 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3025.18 0.21 7440.69 3.61 0.00 0.00 Total volume (cf)7442.75 Total Overflow (cf)0.00
691
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3 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 1.3 0.48 0.56 0.44 0.0484 0.0541 16.24 0.00 0.00 0.00 0.00 0.00 16.24 1078.00 0.07 16.16 0.01 0.00 0.00 0:10 1.3 0.48 0.56 0.44 0.0484 0.0541 16.24 0.00 0.00 0.00 0.00 0.00 16.24 1082.23 0.08 32.33 0.02 0.00 0.00 0:15 1.1 0.41 0.56 0.37 0.0409 0.0458 13.74 0.00 0.00 0.00 0.00 0.00 13.74 1086.46 0.08 45.99 0.02 0.00 0.00 0:20 1.5 0.56 0.56 0.50 0.0558 0.0625 18.74 0.00 0.00 0.00 0.00 0.00 18.74 1090.04 0.08 64.65 0.03 0.00 0.00 0:25 1.5 0.56 0.56 0.50 0.0558 0.0625 18.74 0.00 0.00 0.00 0.00 0.00 18.74 1094.92 0.08 83.31 0.04 0.00 0.00 0:30 1.8 0.67 0.56 N/A 0.1068 0.1195 35.85 0.00 0.00 0.00 0.00 0.00 35.85 1099.80 0.08 119.08 0.06 0.00 0.00 0:35 1.5 0.56 0.56 0.50 0.0558 0.0625 18.74 0.00 0.00 0.00 0.00 0.00 18.74 1109.16 0.08 137.74 0.07 0.00 0.00 0:40 1.8 0.67 0.56 N/A 0.1068 0.1195 35.85 0.00 0.00 0.00 0.00 0.00 35.85 1114.04 0.08 173.51 0.08 0.00 0.00 0:45 1.8 0.67 0.56 N/A 0.1068 0.1195 35.85 0.00 0.00 0.00 0.00 0.00 35.85 1123.40 0.08 209.28 0.10 0.00 0.00 0:50 1.5 0.56 0.56 0.50 0.0558 0.0625 18.74 0.00 0.00 0.00 0.00 0.00 18.74 1132.76 0.08 227.93 0.11 0.00 0.00 0:55 1.6 0.60 0.56 0.54 0.0595 0.0666 19.99 0.00 0.00 0.00 0.00 0.00 19.99 1137.65 0.08 247.84 0.12 0.00 0.00 1:00 1.8 0.67 0.56 N/A 0.1068 0.1195 35.85 0.00 0.00 0.00 0.00 0.00 35.85 1142.86 0.08 283.61 0.14 0.00 0.00 1:05 2.2 0.82 0.56 N/A 0.2556 0.2860 85.81 0.00 0.00 0.00 0.00 0.00 85.81 1152.22 0.08 369.34 0.18 0.00 0.00 1:10 2.2 0.82 0.56 N/A 0.2556 0.2860 85.81 0.00 0.00 0.00 0.00 0.00 85.81 1174.65 0.08 455.06 0.22 0.00 0.00 1:15 2.2 0.82 0.56 N/A 0.2556 0.2860 85.81 0.00 0.00 0.00 0.00 0.00 85.81 1197.08 0.08 540.79 0.26 0.00 0.00 1:20 2 0.74 0.56 N/A 0.1812 0.2028 60.83 0.00 0.00 0.00 0.00 0.00 60.83 1219.52 0.08 601.53 0.29 0.00 0.00 1:25 2.6 0.97 0.56 N/A 0.4044 0.4526 135.77 0.00 0.00 0.00 0.00 0.00 135.77 1235.41 0.09 737.22 0.36 0.00 0.00 1:30 2.7 1.00 0.56 N/A 0.4416 0.4942 148.26 0.00 0.00 0.00 0.00 0.00 148.26 1270.92 0.09 885.40 0.43 0.00 0.00 1:35 2.4 0.89 0.56 N/A 0.3300 0.3693 110.79 0.00 0.00 0.00 0.00 0.00 110.79 1309.70 0.09 996.10 0.48 0.00 0.00 1:40 2.7 1.00 0.56 N/A 0.4416 0.4942 148.26 0.00 0.00 0.00 0.00 0.00 148.26 1338.66 0.09 1144.27 0.56 0.00 0.00 1:45 3.3 1.23 0.56 N/A 0.6648 0.7440 223.21 0.00 0.00 0.00 0.00 0.00 223.21 1377.44 0.10 1367.38 0.66 0.00 0.00 1:50 3.1 1.15 0.56 N/A 0.5904 0.6608 198.23 0.00 0.00 0.00 0.00 0.00 198.23 1435.82 0.10 1565.51 0.76 0.00 0.00 1:55 2.9 1.08 0.56 N/A 0.5160 0.5775 173.25 0.00 0.00 0.00 0.00 0.00 173.25 1487.67 0.10 1738.65 0.84 0.00 0.00 2:00 3 1.12 0.56 N/A 0.5532 0.6191 185.74 0.00 0.00 0.00 0.00 0.00 185.74 1532.98 0.11 1924.28 0.93 0.00 0.00 2:05 3.1 1.15 0.56 N/A 0.5904 0.6608 198.23 0.00 0.00 0.00 0.00 0.00 198.23 1581.56 0.11 2122.39 1.03 0.00 0.00 2:10 4.2 1.56 0.56 N/A 0.9996 1.1188 335.63 0.00 0.00 0.00 0.00 0.00 335.63 1633.40 0.11 2457.91 1.19 0.00 0.00 2:15 5 1.86 0.56 N/A 1.2972 1.4518 435.55 0.00 0.00 0.00 0.00 0.00 435.55 1721.20 0.12 2893.34 1.40 0.00 0.00 2:20 3.5 1.30 0.56 N/A 0.7392 0.8273 248.19 0.00 0.00 0.00 0.00 0.00 248.19 1835.15 0.13 3141.40 1.53 0.00 0.00 2:25 6.8 2.53 0.56 N/A 1.9668 2.2013 660.39 0.00 0.00 0.00 0.00 0.00 660.39 1900.06 0.13 3801.66 1.85 0.00 0.00 2:30 7.3 2.72 0.56 N/A 2.1528 2.4095 722.84 0.00 0.00 0.00 0.00 0.00 722.84 2072.84 0.14 4524.36 2.20 0.00 0.00 2:35 8.2 3.05 0.56 N/A 2.4876 2.7842 835.26 0.00 0.00 0.00 0.00 0.00 835.26 2261.96 0.16 5359.46 2.60 0.00 0.00 2:40 5.9 2.19 0.56 N/A 1.6320 1.8266 547.97 0.00 0.00 0.00 0.00 0.00 547.97 2480.50 0.17 5907.26 2.87 0.00 0.00 2:45 2 0.74 0.56 N/A 0.1812 0.2028 60.83 0.00 0.00 0.00 0.00 0.00 60.83 2623.85 0.18 5967.90 2.90 0.00 0.00 2:50 1.8 0.67 0.56 N/A 0.1068 0.1195 35.85 0.00 0.00 0.00 0.00 0.00 35.85 2639.72 0.18 6003.56 2.91 0.00 0.00 2:55 1.8 0.67 0.56 N/A 0.1068 0.1195 35.85 0.00 0.00 0.00 0.00 0.00 35.85 2649.05 0.18 6039.23 2.93 0.00 0.00 3:00 0.6 0.22 0.56 0.20 0.0223 0.0250 7.49 0.00 0.00 0.00 0.00 0.00 7.49 2658.38 0.18 6046.54 2.94 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2660.30 0.18 6046.35 2.94 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2660.25 0.18 6046.17 2.94 0.00 0.00 3:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2660.20 0.18 6045.98 2.94 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2660.15 0.18 6045.80 2.94 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2660.10 0.18 6045.61 2.94 0.00 0.00 3:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2660.05 0.18 6045.43 2.94 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2660.01 0.18 6045.24 2.93 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2659.96 0.18 6045.06 2.93 0.00 0.00 Total volume (cf)6050.36 Total Overflow (cf)0.00
692

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6 Hour Storm in 5 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:05 0.5 0.23 0.56 0.20 0.0227 0.0255 7.64 0.00 0.00 0.00 0.00 0.00 7.64 1078.00 0.07 7.56 0.00 0.00 0.00 0:10 0.6 0.27 0.56 0.25 0.0273 0.0305 9.16 0.00 0.00 0.00 0.00 0.00 9.16 1079.98 0.07 16.65 0.01 0.00 0.00 0:15 0.6 0.27 0.56 0.25 0.0273 0.0305 9.16 0.00 0.00 0.00 0.00 0.00 9.16 1082.36 0.08 25.74 0.01 0.00 0.00 0:20 0.6 0.27 0.56 0.25 0.0273 0.0305 9.16 0.00 0.00 0.00 0.00 0.00 9.16 1084.73 0.08 34.82 0.02 0.00 0.00 0:25 0.6 0.27 0.56 0.25 0.0273 0.0305 9.16 0.00 0.00 0.00 0.00 0.00 9.16 1087.11 0.08 43.91 0.02 0.00 0.00 0:30 0.7 0.32 0.56 0.29 0.0318 0.0356 10.69 0.00 0.00 0.00 0.00 0.00 10.69 1089.49 0.08 54.52 0.03 0.00 0.00 0:35 0.7 0.32 0.56 0.29 0.0318 0.0356 10.69 0.00 0.00 0.00 0.00 0.00 10.69 1092.27 0.08 65.14 0.03 0.00 0.00 0:40 0.7 0.32 0.56 0.29 0.0318 0.0356 10.69 0.00 0.00 0.00 0.00 0.00 10.69 1095.05 0.08 75.75 0.04 0.00 0.00 0:45 0.7 0.32 0.56 0.29 0.0318 0.0356 10.69 0.00 0.00 0.00 0.00 0.00 10.69 1097.82 0.08 86.37 0.04 0.00 0.00 0:50 0.7 0.32 0.56 0.29 0.0318 0.0356 10.69 0.00 0.00 0.00 0.00 0.00 10.69 1100.60 0.08 96.98 0.05 0.00 0.00 0:55 0.7 0.32 0.56 0.29 0.0318 0.0356 10.69 0.00 0.00 0.00 0.00 0.00 10.69 1103.38 0.08 107.59 0.05 0.00 0.00 1:00 0.8 0.36 0.56 0.33 0.0364 0.0407 12.22 0.00 0.00 0.00 0.00 0.00 12.22 1106.16 0.08 119.73 0.06 0.00 0.00 1:05 0.8 0.36 0.56 0.33 0.0364 0.0407 12.22 0.00 0.00 0.00 0.00 0.00 12.22 1109.33 0.08 131.87 0.06 0.00 0.00 1:10 0.8 0.36 0.56 0.33 0.0364 0.0407 12.22 0.00 0.00 0.00 0.00 0.00 12.22 1112.51 0.08 144.01 0.07 0.00 0.00 1:15 0.8 0.36 0.56 0.33 0.0364 0.0407 12.22 0.00 0.00 0.00 0.00 0.00 12.22 1115.69 0.08 156.15 0.08 0.00 0.00 1:20 0.8 0.36 0.56 0.33 0.0364 0.0407 12.22 0.00 0.00 0.00 0.00 0.00 12.22 1118.86 0.08 168.29 0.08 0.00 0.00 1:25 0.8 0.36 0.56 0.33 0.0364 0.0407 12.22 0.00 0.00 0.00 0.00 0.00 12.22 1122.04 0.08 180.43 0.09 0.00 0.00 1:30 0.8 0.36 0.56 0.33 0.0364 0.0407 12.22 0.00 0.00 0.00 0.00 0.00 12.22 1125.22 0.08 192.57 0.09 0.00 0.00 1:35 0.8 0.36 0.56 0.33 0.0364 0.0407 12.22 0.00 0.00 0.00 0.00 0.00 12.22 1128.39 0.08 204.71 0.10 0.00 0.00 1:40 0.8 0.36 0.56 0.33 0.0364 0.0407 12.22 0.00 0.00 0.00 0.00 0.00 12.22 1131.57 0.08 216.84 0.11 0.00 0.00 1:45 0.8 0.36 0.56 0.33 0.0364 0.0407 12.22 0.00 0.00 0.00 0.00 0.00 12.22 1134.75 0.08 228.98 0.11 0.00 0.00 1:50 0.8 0.36 0.56 0.33 0.0364 0.0407 12.22 0.00 0.00 0.00 0.00 0.00 12.22 1137.92 0.08 241.12 0.12 0.00 0.00 1:55 0.8 0.36 0.56 0.33 0.0364 0.0407 12.22 0.00 0.00 0.00 0.00 0.00 12.22 1141.10 0.08 253.26 0.12 0.00 0.00 2:00 0.9 0.41 0.56 0.37 0.0409 0.0458 13.74 0.00 0.00 0.00 0.00 0.00 13.74 1144.27 0.08 266.92 0.13 0.00 0.00 2:05 0.8 0.36 0.56 0.33 0.0364 0.0407 12.22 0.00 0.00 0.00 0.00 0.00 12.22 1147.85 0.08 279.06 0.14 0.00 0.00 2:10 0.9 0.41 0.56 0.37 0.0409 0.0458 13.74 0.00 0.00 0.00 0.00 0.00 13.74 1151.03 0.08 292.72 0.14 0.00 0.00 2:15 0.9 0.41 0.56 0.37 0.0409 0.0458 13.74 0.00 0.00 0.00 0.00 0.00 13.74 1154.60 0.08 306.39 0.15 0.00 0.00 2:20 0.9 0.41 0.56 0.37 0.0409 0.0458 13.74 0.00 0.00 0.00 0.00 0.00 13.74 1158.18 0.08 320.05 0.16 0.00 0.00 2:25 0.9 0.41 0.56 0.37 0.0409 0.0458 13.74 0.00 0.00 0.00 0.00 0.00 13.74 1161.75 0.08 333.71 0.16 0.00 0.00 2:30 0.9 0.41 0.56 0.37 0.0409 0.0458 13.74 0.00 0.00 0.00 0.00 0.00 13.74 1165.33 0.08 347.38 0.17 0.00 0.00 2:35 0.9 0.41 0.56 0.37 0.0409 0.0458 13.74 0.00 0.00 0.00 0.00 0.00 13.74 1168.90 0.08 361.04 0.18 0.00 0.00 2:40 0.9 0.41 0.56 0.37 0.0409 0.0458 13.74 0.00 0.00 0.00 0.00 0.00 13.74 1172.48 0.08 374.70 0.18 0.00 0.00 2:45 1 0.45 0.56 0.41 0.0455 0.0509 15.27 0.00 0.00 0.00 0.00 0.00 15.27 1176.05 0.08 389.89 0.19 0.00 0.00 2:50 1 0.45 0.56 0.41 0.0455 0.0509 15.27 0.00 0.00 0.00 0.00 0.00 15.27 1180.03 0.08 405.08 0.20 0.00 0.00 2:55 1 0.45 0.56 0.41 0.0455 0.0509 15.27 0.00 0.00 0.00 0.00 0.00 15.27 1184.00 0.08 420.27 0.20 0.00 0.00 3:00 1 0.45 0.56 0.41 0.0455 0.0509 15.27 0.00 0.00 0.00 0.00 0.00 15.27 1187.98 0.08 435.46 0.21 0.00 0.00 3:05 1 0.45 0.56 0.41 0.0455 0.0509 15.27 0.00 0.00 0.00 0.00 0.00 15.27 1191.95 0.08 450.65 0.22 0.00 0.00 3:10 1.1 0.50 0.56 0.45 0.0500 0.0560 16.80 0.00 0.00 0.00 0.00 0.00 16.80 1195.93 0.08 467.36 0.23 0.00 0.00 3:15 1.1 0.50 0.56 0.45 0.0500 0.0560 16.80 0.00 0.00 0.00 0.00 0.00 16.80 1200.30 0.08 484.08 0.24 0.00 0.00 3:20 1.1 0.50 0.56 0.45 0.0500 0.0560 16.80 0.00 0.00 0.00 0.00 0.00 16.80 1204.68 0.08 500.79 0.24 0.00 0.00 3:25 1.2 0.55 0.56 0.49 0.0546 0.0611 18.33 0.00 0.00 0.00 0.00 0.00 18.33 1209.05 0.08 519.03 0.25 0.00 0.00 3:30 1.3 0.59 0.56 0.53 0.0591 0.0662 19.85 0.00 0.00 0.00 0.00 0.00 19.85 1213.82 0.08 538.80 0.26 0.00 0.00 3:35 1.4 0.64 0.56 N/A 0.0739 0.0827 24.81 0.00 0.00 0.00 0.00 0.00 24.81 1219.00 0.08 563.52 0.27 0.00 0.00 3:40 1.4 0.64 0.56 N/A 0.0739 0.0827 24.81 0.00 0.00 0.00 0.00 0.00 24.81 1225.47 0.09 588.24 0.29 0.00 0.00 3:45 1.5 0.68 0.56 N/A 0.1194 0.1336 40.08 0.00 0.00 0.00 0.00 0.00 40.08 1231.93 0.09 628.23 0.31 0.00 0.00 3:50 1.5 0.68 0.56 N/A 0.1194 0.1336 40.08 0.00 0.00 0.00 0.00 0.00 40.08 1242.40 0.09 668.22 0.32 0.00 0.00 3:55 1.6 0.73 0.56 N/A 0.1648 0.1845 55.35 0.00 0.00 0.00 0.00 0.00 55.35 1252.86 0.09 723.48 0.35 0.00 0.00 4:00 1.6 0.73 0.56 N/A 0.1648 0.1845 55.35 0.00 0.00 0.00 0.00 0.00 55.35 1267.33 0.09 778.74 0.38 0.00 0.00 4:05 1.7 0.77 0.56 N/A 0.2103 0.2354 70.62 0.00 0.00 0.00 0.00 0.00 70.62 1281.79 0.09 849.27 0.41 0.00 0.00 4:10 1.8 0.82 0.56 N/A 0.2558 0.2863 85.89 0.00 0.00 0.00 0.00 0.00 85.89 1300.24 0.09 935.07 0.45 0.00 0.00 4:15 1.9 0.86 0.56 N/A 0.3013 0.3372 101.16 0.00 0.00 0.00 0.00 0.00 101.16 1322.70 0.09 1036.14 0.50 0.00 0.00 693

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4:20 2 0.91 0.56 N/A 0.3468 0.3881 116.43 0.00 0.00 0.00 0.00 0.00 116.43 1349.14 0.09 1152.48 0.56 0.00 0.00 4:25 2.1 0.96 0.56 N/A 0.3922 0.4390 131.70 0.00 0.00 0.00 0.00 0.00 131.70 1379.59 0.10 1284.09 0.62 0.00 0.00 4:30 2.1 0.96 0.56 N/A 0.3922 0.4390 131.70 0.00 0.00 0.00 0.00 0.00 131.70 1414.03 0.10 1415.69 0.69 0.00 0.00 4:35 2.2 1.00 0.56 N/A 0.4377 0.4899 146.97 0.00 0.00 0.00 0.00 0.00 146.97 1448.47 0.10 1562.57 0.76 0.00 0.00 4:40 2.3 1.05 0.56 N/A 0.4832 0.5408 162.25 0.00 0.00 0.00 0.00 0.00 162.25 1486.90 0.10 1724.71 0.84 0.00 0.00 4:45 2.4 1.09 0.56 N/A 0.5287 0.5917 177.52 0.00 0.00 0.00 0.00 0.00 177.52 1529.33 0.11 1902.12 0.92 0.00 0.00 4:50 2.4 1.09 0.56 N/A 0.5287 0.5917 177.52 0.00 0.00 0.00 0.00 0.00 177.52 1575.76 0.11 2079.52 1.01 0.00 0.00 4:55 2.5 1.14 0.56 N/A 0.5742 0.6426 192.79 0.00 0.00 0.00 0.00 0.00 192.79 1622.18 0.11 2272.20 1.10 0.00 0.00 5:00 2.6 1.18 0.56 N/A 0.6196 0.6935 208.06 0.00 0.00 0.00 0.00 0.00 208.06 1672.60 0.12 2480.14 1.20 0.00 0.00 5:05 3.1 1.41 0.56 N/A 0.8470 0.9480 284.41 0.00 0.00 0.00 0.00 0.00 284.41 1727.02 0.12 2764.44 1.34 0.00 0.00 5:10 3.6 1.64 0.56 N/A 1.0744 1.2026 360.77 0.00 0.00 0.00 0.00 0.00 360.77 1801.42 0.13 3125.08 1.52 0.00 0.00 5:15 3.9 1.77 0.56 N/A 1.2109 1.3553 406.58 0.00 0.00 0.00 0.00 0.00 406.58 1895.79 0.13 3531.53 1.71 0.00 0.00 5:20 4.2 1.91 0.56 N/A 1.3473 1.5080 452.40 0.00 0.00 0.00 0.00 0.00 452.40 2002.15 0.14 3983.78 1.93 0.00 0.00 5:25 4.7 2.14 0.56 N/A 1.5747 1.7625 528.75 0.00 0.00 0.00 0.00 0.00 528.75 2120.50 0.15 4512.39 2.19 0.00 0.00 5:30 5.6 2.55 0.56 N/A 1.9840 2.2206 666.19 0.00 0.00 0.00 0.00 0.00 666.19 2258.83 0.16 5178.42 2.51 0.00 0.00 5:35 1.9 0.86 0.56 N/A 0.3013 0.3372 101.16 0.00 0.00 0.00 0.00 0.00 101.16 2433.12 0.17 5279.41 2.56 0.00 0.00 5:40 0.9 0.41 0.56 0.37 0.0409 0.0458 13.74 0.00 0.00 0.00 0.00 0.00 13.74 2459.55 0.17 5292.99 2.57 0.00 0.00 5:45 0.6 0.27 0.56 0.25 0.0273 0.0305 9.16 0.00 0.00 0.00 0.00 0.00 9.16 2463.10 0.17 5301.98 2.57 0.00 0.00 5:50 0.5 0.23 0.56 0.20 0.0227 0.0255 7.64 0.00 0.00 0.00 0.00 0.00 7.64 2465.46 0.17 5309.44 2.58 0.00 0.00 5:55 0.3 0.14 0.56 0.12 0.0136 0.0153 4.58 0.00 0.00 0.00 0.00 0.00 4.58 2467.41 0.17 5313.85 2.58 0.00 0.00 6:00 0.2 0.09 0.56 0.08 0.0091 0.0102 3.05 0.00 0.00 0.00 0.00 0.00 3.05 2468.56 0.17 5316.73 2.58 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2469.32 0.17 5316.56 2.58 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2469.27 0.17 5316.39 2.58 0.00 0.00 6:15 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2469.23 0.17 5316.22 2.58 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2469.18 0.17 5316.05 2.58 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2469.14 0.17 5315.88 2.58 0.00 0.00 6:30 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2469.09 0.17 5315.71 2.58 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2469.05 0.17 5315.53 2.58 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2469.00 0.17 5315.36 2.58 0.00 0.00 6:45 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2468.96 0.17 5315.19 2.58 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2468.91 0.17 5315.02 2.58 0.00 0.00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2468.87 0.17 5314.85 2.58 0.00 0.00 7:00 0 0.00 0.56 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2468.82 0.17 5314.68 2.58 0.00 0.00 Total volume (cf)5323.63 Total Overflow (cf)0.00
694

5 of 6
24 Hour Storm in 15 minute increments Drywell Drywell Drywell Drywell Overflow Basin Basin Basin Time Pattern Storm Loss Rate Value Effective Flow Flow Outside Retention Period Storage Storage To Retention Period Storage Storage Overflow Overflow %Rain (in/hr)Max.Min.Rain (in/hr)Rate (cfs)Vol. (cf)Input (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Basin (cf)Area (sf)Perc. (cf)Vol. (cf)Depth (ft)Vol. (cf)Rate (cfs) 0:15 0.2 0.04 0.99 0.04 0.0040 0.0045 4.07 0.00 0.00 0.00 0.00 0.00 4.07 1078.00 0.22 3.85 0.00 0.00 0.00 0:30 0.3 0.06 0.98 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1079.01 0.22 9.72 0.00 0.00 0.00 0:45 0.3 0.06 0.97 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1080.54 0.23 15.60 0.01 0.00 0.00 1:00 0.4 0.08 0.95 0.07 0.0081 0.0090 8.14 0.00 0.00 0.00 0.00 0.00 8.14 1082.08 0.23 23.52 0.01 0.00 0.00 1:15 0.3 0.06 0.94 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1084.15 0.23 29.40 0.01 0.00 0.00 1:30 0.3 0.06 0.93 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1085.69 0.23 35.27 0.02 0.00 0.00 1:45 0.3 0.06 0.92 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1087.23 0.23 41.15 0.02 0.00 0.00 2:00 0.4 0.08 0.91 0.07 0.0081 0.0090 8.14 0.00 0.00 0.00 0.00 0.00 8.14 1088.77 0.23 49.06 0.02 0.00 0.00 2:15 0.4 0.08 0.90 0.07 0.0081 0.0090 8.14 0.00 0.00 0.00 0.00 0.00 8.14 1090.84 0.23 56.98 0.03 0.00 0.00 2:30 0.4 0.08 0.89 0.07 0.0081 0.0090 8.14 0.00 0.00 0.00 0.00 0.00 8.14 1092.91 0.23 64.89 0.03 0.00 0.00 2:45 0.5 0.10 0.88 0.09 0.0101 0.0113 10.17 0.00 0.00 0.00 0.00 0.00 10.17 1094.98 0.23 74.83 0.04 0.00 0.00 3:00 0.5 0.10 0.87 0.09 0.0101 0.0113 10.17 0.00 0.00 0.00 0.00 0.00 10.17 1097.58 0.23 84.78 0.04 0.00 0.00 3:15 0.5 0.10 0.85 0.09 0.0101 0.0113 10.17 0.00 0.00 0.00 0.00 0.00 10.17 1100.19 0.23 94.72 0.05 0.00 0.00 3:30 0.5 0.10 0.84 0.09 0.0101 0.0113 10.17 0.00 0.00 0.00 0.00 0.00 10.17 1102.79 0.23 104.67 0.05 0.00 0.00 3:45 0.5 0.10 0.83 0.09 0.0101 0.0113 10.17 0.00 0.00 0.00 0.00 0.00 10.17 1105.39 0.23 114.61 0.06 0.00 0.00 4:00 0.6 0.12 0.82 0.11 0.0121 0.0136 12.21 0.00 0.00 0.00 0.00 0.00 12.21 1107.99 0.23 126.59 0.06 0.00 0.00 4:15 0.6 0.12 0.81 0.11 0.0121 0.0136 12.21 0.00 0.00 0.00 0.00 0.00 12.21 1111.13 0.23 138.57 0.07 0.00 0.00 4:30 0.7 0.14 0.80 0.13 0.0141 0.0158 14.24 0.00 0.00 0.00 0.00 0.00 14.24 1114.26 0.23 152.58 0.07 0.00 0.00 4:45 0.7 0.14 0.79 0.13 0.0141 0.0158 14.24 0.00 0.00 0.00 0.00 0.00 14.24 1117.93 0.23 166.59 0.08 0.00 0.00 5:00 0.8 0.16 0.78 0.15 0.0162 0.0181 16.28 0.00 0.00 0.00 0.00 0.00 16.28 1121.59 0.23 182.63 0.09 0.00 0.00 5:15 0.6 0.12 0.77 0.11 0.0121 0.0136 12.21 0.00 0.00 0.00 0.00 0.00 12.21 1125.79 0.23 194.61 0.09 0.00 0.00 5:30 0.7 0.14 0.76 0.13 0.0141 0.0158 14.24 0.00 0.00 0.00 0.00 0.00 14.24 1128.93 0.24 208.62 0.10 0.00 0.00 5:45 0.8 0.16 0.75 0.15 0.0162 0.0181 16.28 0.00 0.00 0.00 0.00 0.00 16.28 1132.59 0.24 224.66 0.11 0.00 0.00 6:00 0.8 0.16 0.74 0.15 0.0162 0.0181 16.28 0.00 0.00 0.00 0.00 0.00 16.28 1136.79 0.24 240.70 0.12 0.00 0.00 6:15 0.9 0.18 0.73 0.16 0.0182 0.0203 18.31 0.00 0.00 0.00 0.00 0.00 18.31 1140.99 0.24 258.78 0.13 0.00 0.00 6:30 0.9 0.18 0.72 0.16 0.0182 0.0203 18.31 0.00 0.00 0.00 0.00 0.00 18.31 1145.72 0.24 276.85 0.13 0.00 0.00 6:45 1 0.20 0.71 0.18 0.0202 0.0226 20.35 0.00 0.00 0.00 0.00 0.00 20.35 1150.45 0.24 296.96 0.14 0.00 0.00 7:00 1 0.20 0.70 0.18 0.0202 0.0226 20.35 0.00 0.00 0.00 0.00 0.00 20.35 1155.71 0.24 317.07 0.15 0.00 0.00 7:15 1 0.20 0.69 0.18 0.0202 0.0226 20.35 0.00 0.00 0.00 0.00 0.00 20.35 1160.97 0.24 337.17 0.16 0.00 0.00 7:30 1.1 0.22 0.68 0.20 0.0222 0.0249 22.38 0.00 0.00 0.00 0.00 0.00 22.38 1166.23 0.24 359.31 0.17 0.00 0.00 7:45 1.2 0.24 0.67 0.22 0.0242 0.0271 24.42 0.00 0.00 0.00 0.00 0.00 24.42 1172.03 0.24 383.49 0.19 0.00 0.00 8:00 1.3 0.26 0.66 0.24 0.0263 0.0294 26.45 0.00 0.00 0.00 0.00 0.00 26.45 1178.35 0.25 409.69 0.20 0.00 0.00 8:15 1.5 0.30 0.66 0.27 0.0303 0.0339 30.52 0.00 0.00 0.00 0.00 0.00 30.52 1185.21 0.25 439.97 0.21 0.00 0.00 8:30 1.5 0.30 0.65 0.27 0.0303 0.0339 30.52 0.00 0.00 0.00 0.00 0.00 30.52 1193.13 0.25 470.24 0.23 0.00 0.00 8:45 1.6 0.32 0.64 0.29 0.0323 0.0362 32.56 0.00 0.00 0.00 0.00 0.00 32.56 1201.06 0.25 502.55 0.24 0.00 0.00 9:00 1.7 0.34 0.63 0.31 0.0343 0.0384 34.59 0.00 0.00 0.00 0.00 0.00 34.59 1209.51 0.25 536.89 0.26 0.00 0.00 9:15 1.9 0.38 0.62 0.35 0.0384 0.0430 38.66 0.00 0.00 0.00 0.00 0.00 38.66 1218.50 0.25 575.29 0.28 0.00 0.00 9:30 2 0.40 0.61 0.36 0.0404 0.0452 40.70 0.00 0.00 0.00 0.00 0.00 40.70 1228.55 0.26 615.73 0.30 0.00 0.00 9:45 2.1 0.42 0.60 0.38 0.0424 0.0475 42.73 0.00 0.00 0.00 0.00 0.00 42.73 1239.13 0.26 658.21 0.32 0.00 0.00 10:00 2.2 0.44 0.59 0.40 0.0444 0.0497 44.77 0.00 0.00 0.00 0.00 0.00 44.77 1250.24 0.26 702.71 0.34 0.00 0.00 10:15 1.5 0.30 0.58 0.27 0.0303 0.0339 30.52 0.00 0.00 0.00 0.00 0.00 30.52 1261.89 0.26 732.97 0.36 0.00 0.00 10:30 1.5 0.30 0.58 0.27 0.0303 0.0339 30.52 0.00 0.00 0.00 0.00 0.00 30.52 1269.81 0.26 763.23 0.37 0.00 0.00 10:45 2 0.40 0.57 0.36 0.0404 0.0452 40.70 0.00 0.00 0.00 0.00 0.00 40.70 1277.73 0.27 803.66 0.39 0.00 0.00 11:00 2 0.40 0.56 0.36 0.0404 0.0452 40.70 0.00 0.00 0.00 0.00 0.00 40.70 1288.31 0.27 844.09 0.41 0.00 0.00 11:15 1.9 0.38 0.55 0.35 0.0384 0.0430 38.66 0.00 0.00 0.00 0.00 0.00 38.66 1298.89 0.27 882.48 0.43 0.00 0.00 11:30 1.9 0.38 0.54 0.35 0.0384 0.0430 38.66 0.00 0.00 0.00 0.00 0.00 38.66 1308.93 0.27 920.86 0.45 0.00 0.00 11:45 1.7 0.34 0.53 0.31 0.0343 0.0384 34.59 0.00 0.00 0.00 0.00 0.00 34.59 1318.98 0.27 955.18 0.46 0.00 0.00 12:00 1.8 0.36 0.53 0.33 0.0364 0.0407 36.63 0.00 0.00 0.00 0.00 0.00 36.63 1327.96 0.28 991.53 0.48 0.00 0.00 12:15 2.5 0.51 0.52 0.45 0.0505 0.0565 50.87 0.00 0.00 0.00 0.00 0.00 50.87 1337.47 0.28 1042.12 0.51 0.00 0.00 12:30 2.6 0.53 0.51 0.47 0.0525 0.0588 52.90 0.00 0.00 0.00 0.00 0.00 52.90 1350.71 0.28 1094.75 0.53 0.00 0.00 12:45 2.8 0.57 0.50 N/A 0.0622 0.0697 62.69 0.00 0.00 0.00 0.00 0.00 62.69 1364.48 0.28 1157.15 0.56 0.00 0.00 695

6 of 6
13:00 2.9 0.59 0.50 N/A 0.0900 0.1008 90.69 0.00 0.00 0.00 0.00 0.00 90.69 1380.81 0.29 1247.55 0.61 0.00 0.00 13:15 3.4 0.69 0.49 N/A 0.1985 0.2222 199.99 0.00 0.00 0.00 0.00 0.00 199.99 1404.47 0.29 1447.24 0.70 0.00 0.00 13:30 3.4 0.69 0.48 N/A 0.2059 0.2305 207.45 0.00 0.00 0.00 0.00 0.00 207.45 1456.72 0.30 1654.39 0.80 0.00 0.00 13:45 2.3 0.46 0.47 0.42 0.0465 0.0520 46.80 0.00 0.00 0.00 0.00 0.00 46.80 1510.93 0.31 1700.87 0.83 0.00 0.00 14:00 2.3 0.46 0.47 0.42 0.0465 0.0520 46.80 0.00 0.00 0.00 0.00 0.00 46.80 1523.09 0.32 1747.35 0.85 0.00 0.00 14:15 2.7 0.55 0.46 N/A 0.0862 0.0965 86.81 0.00 0.00 0.00 0.00 0.00 86.81 1535.26 0.32 1833.85 0.89 0.00 0.00 14:30 2.6 0.53 0.45 N/A 0.0730 0.0817 73.53 0.00 0.00 0.00 0.00 0.00 73.53 1557.89 0.32 1907.06 0.93 0.00 0.00 14:45 2.6 0.53 0.45 N/A 0.0799 0.0894 80.50 0.00 0.00 0.00 0.00 0.00 80.50 1577.05 0.33 1987.23 0.96 0.00 0.00 15:00 2.5 0.51 0.44 N/A 0.0665 0.0745 67.01 0.00 0.00 0.00 0.00 0.00 67.01 1598.03 0.33 2053.91 1.00 0.00 0.00 15:15 2.4 0.48 0.43 N/A 0.0530 0.0594 53.43 0.00 0.00 0.00 0.00 0.00 53.43 1615.48 0.34 2107.00 1.02 0.00 0.00 15:30 2.3 0.46 0.43 0.42 0.0465 0.0520 46.80 0.00 0.00 0.00 0.00 0.00 46.80 1629.37 0.34 2153.46 1.05 0.00 0.00 15:45 1.9 0.38 0.42 0.35 0.0384 0.0430 38.66 0.00 0.00 0.00 0.00 0.00 38.66 1641.53 0.34 2191.78 1.06 0.00 0.00 16:00 1.9 0.38 0.41 0.35 0.0384 0.0430 38.66 0.00 0.00 0.00 0.00 0.00 38.66 1651.56 0.34 2230.10 1.08 0.00 0.00 16:15 0.4 0.08 0.41 0.07 0.0081 0.0090 8.14 0.00 0.00 0.00 0.00 0.00 8.14 1661.59 0.35 2237.89 1.09 0.00 0.00 16:30 0.4 0.08 0.40 0.07 0.0081 0.0090 8.14 0.00 0.00 0.00 0.00 0.00 8.14 1663.62 0.35 2245.68 1.09 0.00 0.00 16:45 0.3 0.06 0.39 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1665.66 0.35 2251.44 1.09 0.00 0.00 17:00 0.3 0.06 0.39 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1667.17 0.35 2257.20 1.10 0.00 0.00 17:15 0.5 0.10 0.38 0.09 0.0101 0.0113 10.17 0.00 0.00 0.00 0.00 0.00 10.17 1668.68 0.35 2267.02 1.10 0.00 0.00 17:30 0.5 0.10 0.38 0.09 0.0101 0.0113 10.17 0.00 0.00 0.00 0.00 0.00 10.17 1671.25 0.35 2276.85 1.11 0.00 0.00 17:45 0.5 0.10 0.37 0.09 0.0101 0.0113 10.17 0.00 0.00 0.00 0.00 0.00 10.17 1673.82 0.35 2286.67 1.11 0.00 0.00 18:00 0.4 0.08 0.37 0.07 0.0081 0.0090 8.14 0.00 0.00 0.00 0.00 0.00 8.14 1676.39 0.35 2294.46 1.11 0.00 0.00 18:15 0.4 0.08 0.36 0.07 0.0081 0.0090 8.14 0.00 0.00 0.00 0.00 0.00 8.14 1678.43 0.35 2302.25 1.12 0.00 0.00 18:30 0.4 0.08 0.35 0.07 0.0081 0.0090 8.14 0.00 0.00 0.00 0.00 0.00 8.14 1680.47 0.35 2310.04 1.12 0.00 0.00 18:45 0.3 0.06 0.35 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1682.51 0.35 2315.79 1.12 0.00 0.00 19:00 0.2 0.04 0.34 0.04 0.0040 0.0045 4.07 0.00 0.00 0.00 0.00 0.00 4.07 1684.01 0.35 2319.51 1.13 0.00 0.00 19:15 0.3 0.06 0.34 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1684.99 0.35 2325.27 1.13 0.00 0.00 19:30 0.4 0.08 0.34 0.07 0.0081 0.0090 8.14 0.00 0.00 0.00 0.00 0.00 8.14 1686.49 0.35 2333.05 1.13 0.00 0.00 19:45 0.3 0.06 0.33 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1688.53 0.35 2338.81 1.14 0.00 0.00 20:00 0.2 0.04 0.33 0.04 0.0040 0.0045 4.07 0.00 0.00 0.00 0.00 0.00 4.07 1690.03 0.35 2342.52 1.14 0.00 0.00 20:15 0.3 0.06 0.32 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1691.01 0.35 2348.28 1.14 0.00 0.00 20:30 0.3 0.06 0.32 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1692.51 0.35 2354.03 1.14 0.00 0.00 20:45 0.3 0.06 0.31 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1694.02 0.35 2359.78 1.15 0.00 0.00 21:00 0.2 0.04 0.31 0.04 0.0040 0.0045 4.07 0.00 0.00 0.00 0.00 0.00 4.07 1695.52 0.35 2363.50 1.15 0.00 0.00 21:15 0.3 0.06 0.31 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1696.50 0.35 2369.25 1.15 0.00 0.00 21:30 0.2 0.04 0.30 0.04 0.0040 0.0045 4.07 0.00 0.00 0.00 0.00 0.00 4.07 1698.00 0.35 2372.96 1.15 0.00 0.00 21:45 0.3 0.06 0.30 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1698.97 0.35 2378.71 1.15 0.00 0.00 22:00 0.2 0.04 0.30 0.04 0.0040 0.0045 4.07 0.00 0.00 0.00 0.00 0.00 4.07 1700.48 0.35 2382.43 1.16 0.00 0.00 22:15 0.3 0.06 0.29 0.05 0.0061 0.0068 6.10 0.00 0.00 0.00 0.00 0.00 6.10 1701.45 0.35 2388.18 1.16 0.00 0.00 22:30 0.2 0.04 0.29 0.04 0.0040 0.0045 4.07 0.00 0.00 0.00 0.00 0.00 4.07 1702.95 0.35 2391.89 1.16 0.00 0.00 22:45 0.2 0.04 0.29 0.04 0.0040 0.0045 4.07 0.00 0.00 0.00 0.00 0.00 4.07 1703.93 0.35 2395.61 1.16 0.00 0.00 23:00 0.2 0.04 0.29 0.04 0.0040 0.0045 4.07 0.00 0.00 0.00 0.00 0.00 4.07 1704.90 0.36 2399.32 1.16 0.00 0.00 23:15 0.2 0.04 0.28 0.04 0.0040 0.0045 4.07 0.00 0.00 0.00 0.00 0.00 4.07 1705.87 0.36 2403.04 1.17 0.00 0.00 23:30 0.2 0.04 0.28 0.04 0.0040 0.0045 4.07 0.00 0.00 0.00 0.00 0.00 4.07 1706.84 0.36 2406.75 1.17 0.00 0.00 23:45 0.2 0.04 0.28 0.04 0.0040 0.0045 4.07 0.00 0.00 0.00 0.00 0.00 4.07 1707.81 0.36 2410.47 1.17 0.00 0.00 24:00 0.2 0.04 0.28 0.04 0.0040 0.0045 4.07 0.00 0.00 0.00 0.00 0.00 4.07 1708.79 0.36 2414.18 1.17 0.00 0.00 0 0.00 0.28 0.00 0.0000 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1709.76 0.36 2413.82 1.17 0.00 0.00 Total volume (cf)2442.09 Total Overflow (cf)0.00
696

EXHIBITS

697

FOMOTORENGINEERING
698
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PREL M NARY HYDROLOGY

TENTATVE TRACT MAP NO,

A PORTION OF THE
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OWNER: /
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_ APN: 689-140-018
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0 50'
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SCALE 1"-50'
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LOT 7 1.16AC
.J EP 259.36
150' 200'
DIAL
BEFORE

YOU DIG

A PUBLIC SERVICE BY

UNDERGROUND SERVICE ALERT

TWO WORKING

DAYS BEFORE

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NO.
5 EAST, SAN

CALIFORNIA
PLAN
38971

BERNARDINO BASE
(TC261.38) -.

APPROVED
DRAWN BY; DATE:
... .,,_.,_ .... ,APN: 689-090-0'S:ft' ~" _,.,,
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LEGEND=
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FOR RE~EW PURPOSES ONLY
PHIWP K. FOMOTOR PE., PLS.

R.C.E. NO. 472B4
DATE:

PRELIMINARY

PRELIMINARY HYDROLOGY PLAN
FOIi
TENTATIVE lRACT MAP NO. 38971
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PREPARED BY:
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DATE: 07/09/2024
225 S. CIVIC DRIVE, SUITE 1-5
PALM SPRINGS, CA. 92262
(760) 323-1842 FAX (760) 323-1742

Whitewater River Region WQMP
TTM 38971-Rancho Mirage, CA
Appendix G
AGREEMENTS – CC&RS, COVENANT AND AGREEMENTS, BMP

MAINTENANCE AGREEMENTS AND/OR OTHER

MECHANISMS FOR ENSURING ONGOING OPERATION,

MAINTENANCE, FUNDING AND TRANSFER OF

REQUIREMENTS FOR THIS PROJECT-SPECIFIC WQMP
699

Recording requested by:

City of Rancho Mirage
When recorded mail to:

City of Rancho Mirage
69825 Highway 111
Rancho Mirage, CA, 92270
Attn: City Clerk
APNs: 689-090-003, 689-130-004, -005,
-013, -014, -018 & 689-140-022
Space above this line for Recorder's use
(Exempt from recording fees pursuant to Government Code Sections 6103 and 27383) Water Quality Management Plan and Urban Runoff BMP
Transfer, Access and Maintenance Agreement and Covenant

THIS WATER QUALITY MANAGEMENT PLAN AND URBAN RUNOFF BMP

TRANSFER, ACCESS AND MAINTENANCE AGREEMENT AND COVENANT (“Agreement and Covenant”) is made and entered into in Rancho Mirage, California, this ______day of _______, by and between Horti Caesaris LLC, herein after referred to as “Owner,” and the City of Rancho Mirage, a municipal corporation, located in the County of Riverside, State of California hereinafter referred to as “City.”

RECITALS
WHEREAS, Owner owns real property (“Property”) having a common address of:

Peterson Road, in the City of Rancho Mirage, County of Riverside, State of California, having Assessor’s Parcel Number(s) of 689-090-003, 689-130-004, -005, -013, -014, - 018 & 689-140-022, more specifically described in Exhibit “A” and depicted in Exhibit “B” both of which exhibits are attached hereto and incorporated herein by this reference; and
WHEREAS, the California Regional Water Quality Control Board – Colorado River Basin Region (CRWQCB-CRB), pursuant to Order No. R7-2008-001 issued to the City, along with the County of Riverside, the Coachella Valley Water District (CVWD), and the cities of Banning, Cathedral City, Coachella, Desert Hot Springs, Indian Wells, Indio, La Quinta, Palm Desert, and Palm Springs (collectively, "Co-Permittees"), a permit dated May 21, 2008 and identified as: Waste Discharge Requirements for Discharges from the Municipal Separate Storm Sewer System (MS4) within the Whitewater River Watershed Riverside County Flood Control and Water Conservation District, Owner/Operator County of Riverside, Owner/Operator, Coachella Valley Water District, Owner/Operator, and Incorporated Cities of Riverside County within the Whitewater River Basin, Owners/Operators, which also serves as the National Pollutant Discharge 700

Elimination System (NPDES) Permit No. CAS617002 ("NPDES Permit"), pursuant to the Federal Clean Water Act; and
WHEREAS, the NPDES Permit provides that the City, as a co-permittee, must implement appropriate procedures to regulate the entry of pollutants and non -storm water discharges into the county storm water conveyance system; and WHEREAS, the NPDES requires the City adopt Best Management Practices ("BMP") pursuant to the NPDES Permit; and
WHEREAS, these BMP and other regulations are supplemented by the City's Storm Water Management and Discharge Control Ordinance codified as Chapter 7.03 of the Rancho Mirage Municipal Code; and
WHEREAS, when the City Council on Month? Date?, Year?, approved Owner’s request for Development Agreement Case No. DAXXXXXX for development of a 20.05 acre proposed tract map residential project site (TTM 38971) is located on Peterson Road, in the City of Rancho Mirage, County of Riverside, California , the Owner was required to employ BMPs to minimize pollutants in urban runoff; and WHEREAS, Owner has chosen to install and/or implement BMPs as described in the Water Quality Management Plan, on file with the City, hereinafter referred to as “WQMP,” to minimize pollutants in urban runoff and to minimize other adverse impacts of urban runoff; and
WHEREAS, the parties acknowledge that the WQMP on file with the City is incorporated herein by this reference; and
WHEREAS, said WQMP has been certified by the Owner, reviewed and approved by the City, and summarized by selected excerpts attached hereto and incorporated herein by this reference as Exhibit “C”; and WHEREAS, said BMPs, with installation and/or implementation on private property and draining only private property, are part of a private facility with all maintenance or replacement, therefore, the sole responsibility of the Owner in accordance with the terms of this Agreement; and
WHEREAS, the Owner is aware that periodic and continuous maintenance, including, but not necessarily limited to, filter material replacement and sediment removal, is required to assure peak performance of all BMPs in the WQMP and that, furthermore, such maintenance activity will require compliance with all Local, State, or Federal laws and regulations, including those pertaining to confined space and waste disposal methods, in effect at the time such maintenance occurs. 701

COVENANT
NOW THEREFORE in consideration of the foregoing, it is mutually stipulated and agreed as follows:

1.Owner hereby provides the City or City’s designee complete access, of any duration, to the BMPs and their immediate vicinity at any time, upon reasonable notice, or in the event of emergency, as determined by City’s Director of Public Works (“Director”) on advance notice, for the purpose of inspection, sampling, testing of the BMPs and in case of emergency, to undertake all necessary repairs or other preventative measures at Owner’s expense as provided in paragraph 3 below. City shall make every effort at all times to minimize or avoid interference with Owner’s use of the Property.

2.Owner shall use its best efforts diligently to maintain all BMPs in a manner assuring peak performance at all times. All reasonable precautions shall be exercised by Owner and Owner’s representative or contractor in the removal and extraction of any material(s) from the BMPs and the ultimate disposal of the material(s) in a manner consistent with all relevant laws and regulations in effect at the time. As may be requested from time to time by the City, the Owner shall provide the City with documentation identifying the material(s) removed, the quantity, and disposal destination.

3.In the event Owner, or its successors or assigns, fails to accomplish the necessary maintenance contemplated by this Agreement, within five (5) days of being given written notice by the City, the City is hereby authorized to cause any maintenance necessary to be done and charge the entire cost and expense to the Owner or Owner’s successors or assigns, including administrative costs, attorneys fees and interest thereon at the maximum rate authorized by the Civil Code from the date of the notice of expense until paid in full.

4.The City may require the Owner to post security in form and for a time period satisfactory to the City to guarantee the performance of the obligations stated herein. Should the Owner fail to perform the obligations under the Agreement, the City may, in the case of a cash bond, act for the Owner using the proceeds from it, or in the case of a surety bond, require the sureties to perform the obligations of the Agreement.

As an additional remedy, the Director may withdraw any previous Urban Runoff -related approval with respect to the property on which BMPs have been installed and/or implemented until such time as Owner repays to City its reasonable costs incurred in accordance with paragraph 3 above.

5.This Agreement and Covenant shall be recorded in the Office of the Recorder of Riverside County, California, at the expense of the Owner and shall constitute notice to all successors and assigns of the title to said Property of the obligation herein set forth, and also a lien in such amount as will fully reimburse the City, including interest as herein above set forth, subject to foreclosure in event of default in payment.
702

6.In event of legal action occasioned by any default or action of the Owner, or its successors or assigns, the Owner and its successors or assigns agree(s) to pay all costs incurred by the City in enforcing the terms of this Agreement, including reasonable attorney’s fees and costs, and that the same shall become a part of the lien against said Property.

7.It is the intent of the parties hereto that burdens and benefits herein undertaken shall constitute covenants that run with said Property and constitute a lien there against.

8.The obligations herein undertaken shall be binding upon the heirs, successors, executors, administrators and assigns of the parties hereto. The term “Owner” shall include not only the present Owner, but also its heirs, successors, executors, administrators, and assigns. Owner shall notify any successor to title of all or part of the Property about the existence of this Agreement and Covenant. Owner shall provide such notice prior to such successor obtaining an interest in all or part of the Property. Owner shall provide a copy of such notice to the City at the same time such notice is provided to the successor.

9.Time is of the essence in the performance of this Agreement and Covenant.

10.Any notice to a party required or called for in this Agreement and Covenant shall be served in person, or by deposit in the U.S. Mail, first class postage prepaid, to the address set forth below. Notice(s) shall be deemed effective upon receipt, or seventy-two (72) hours after deposit in the U.S. Mail, whichever is earlier. A party may change a notice address only by providing written notice thereof to the other party.

IF TO CITY: IF TO OWNER:

City of Rancho Mirage
69825 Highway 111
Rancho Mirage, CA 92270
Attn: Leland Cole, City Engineer
Ph. 760-770-3224
Konstantinos Patis
Horti Caesaris LLC
9401 Wilshire Blvd., 12th Floor
Beverly Hills, CA 90212-2928
Ph. 30(210)812-8242
[THE REMAINDER OF THIS PAGE LEFT INTENTIONALLY BLANK]
703

IN WITNESS THEREOF, the parties hereto have affixed their signatures as of the date first written above.

CITY OF RANCHO MIRAGE OWNER
Leland Cole, R.C.E. 47159
City Engineer
Title
ATTEST:

Kristie Ramos, City Clerk
APPROVED AS TO FORM:
______ ________ ________
Steve Quintanilla, City Attorney
Name
Title
Name
Title

NOTARIES ON FOLLOWING PAGE
704

EXHIBIT A
(Legal Description)
705

EXHIBIT B
(Map/Illustration)
706

EXHIBIT C
(Summary Excerpts from WQMP)
[TO BE ATTACHED]

LIST OF WQMP EXCERPTS INCLUDED IN EXHIBIT C

1.COVER SHEET SUMMARY PAGE (INCLUDES WQMP PREPARATION/REVISION DATE)(1 PAGE)

2.SITE PLAN (REDUCED COPY OF PLAN FROM FULL WQMP)(1 PAGE)

3.OWNER’S CERTIFICATION AND NOTARY ATTACHMENT (2 PAGES)

4.SECTION I: “PROJECT DESCRIPTION” AND “ADDITIONAL PERMITS/APPROVALS TABLE” (2 PAGES)

5.SECTION II: “SITE CHARACTERIZATION” AND “RECEIVING WATERS TABLE” (2 PAGES)

6.SECTION III: “POLLUTANTS OF CONCERN” SUMMARY TABLE (1 PAGE)

7.SECTION IV: “HYDROLOGIC CONDITIONS OF CONCERN” CHECKBOXES & TABLE (2 PAGES)

8.SECTION V: “BEST MANAGEMENT PRACTICES” CHECKBOXES, SUMMARY, & LIST OF APPLICABLE IMPROVEMENT PLANS ON FILE AT THE CITY (3 PAGES)

9.SECTION VI: “OPERATION AND MAINTENANCE RESPONSIBILITY FOR BMPS” SUMMARY (1 PAGE)

10.SECTION VII: “FUNDING” SUMMARY (1 PAGE)

11.SUMMARY LIST OF DOCUMENTS IN FULL WQMP APPENDICES, INCLUDING DATES (1 PAGE)

12.SUMMARY OF HYDROLOGY / HYDRAULIC STUDY (2 PAGES)

13.“PROJECT-SPECIFIC WQMP SUMMARY DATA FORM” (APP. I) (1 PAGE) 707

Whitewater River Region WQMP
TTM 38971-Rancho Mirage, CA
Appendix H
PHASE 1 ENVIRONMENTAL SITE ASSESSMENT – SUMMARY OF SITE

REMEDIATION CONDUCTED AND USE RESTRICTIONS
N/A
708

Whitewater River Region WQMP
TTM 38971-Rancho Mirage, CA
Appendix I

PROJECT-SPECIFIC WQMP SUMMARY DATA FORM
709

Project-Specific WQMP Summary Data Form
Applicant Information
Name and Title Konstantinos Patis, Owner
Company Horti Caesaris LLC
Phone 30(210)812-8242
Email [email protected]
Project Information
Project Name
(as shown on project application/project-specific WQMP) Tentative Tract Map 38971 Street Address Peterson Road
Nearest Cross Streets Mirage Cove Drive
Municipality
(City or Unincorporated County) Rancho Mirage, CA
Zip Code 92270
Tract Number(s) and/or Assessor Parcel Number(s) Tentative Tract Map 38971 Other
(other information to help identify location of project) Indicate type of project. Priority Development Projects (Use an "X" in cell preceding project type):

SF hillside residence; impervious area ≥ 10,000 sq. ft.; Slope ≥ 25% SF hillside residence; impervious area ≥ 10,000 sq. ft.; Slope ≥ 10% & erosive soils Commercial or Industrial ≥ 100,000 sq. ft.

Automotive repair shop
Retail Gasoline Outlet disturbing > 5,000 sq. ft.

Restaurant disturbing > 5,000 sq. ft.

X Home subdivision ≥ 10 housing units
Parking lot ≥ 5,000 sq. ft. or ≥ 25 parking spaces
Date Project-Specific WQMP Submitted
Size of Project Area (nearest 0.1 acre) 20.1
Will the project replace more than 50% of the impervious surfaces on an existing developed site? No
Project Area managed with LID/Site Design BMPs
(nearest 0.1 acre) 20.1
Are Treatment Control BMPs required? No
Is the project subject to onsite retention by ordinance or policy? Yes
Did the project meet the 100% LID/Site Design
Measurable Goal? Yes
Name of the entity that will implement, operate, and
maintain the post-construction BMPs Horti Caesaris LLC
Contact Name Konstantinos Patis
Street or Mailing Address 9401 Wilshire Blvd., 12th Floor City Beverly Hills, CA
Zip Code 90212-2928
Phone 30(210)812-8242
Space Below for Use by City/County Staff Only
Preceding Information Verified by
(consistent with information in project-specific WQMP)
Name:

Date:

Date Project-Specific WQMP Approved:

Data Entered by Name:

Date:
710

Other Comments
711

APPENDIX E
712
~ Sladden Engineering
June 7, 2024
45090 Golf Center Parkway, Suite F, Indio, CA 92201 (760) 863-0713 Fax (760) 863-0847 6782 Stanton Avenue, Suite C, Buena Park, CA 90621 (714) 523-0952 Fax (714) 523-1369 450 Egan Avenue, Beaumont, CA 92223 (951) 845-7743 Fax (951) 845-8863 www.Sladdenengineering.com
Project No. 544-22493
24-06-294
Konstantinos Patis
c/o Horti Caesaris ,LLC
9401 Wilshire Boulevard, 12th Floor
Beverly Hills, California 90212-2928
Project:

Subject:

Ref:

Tract Map No. 68971
APN's 689-130-005, 014,017,018
APN's 689-090-003 & 689-140-022
Peterson Road
Rancho Mirage, California
Geotechnical Update
Geotechnical Investigation report prepared by Sladden Engineering dated October 19, 2010; Project No. 544-10159, Report No. 10-10-237
Geotechnical Update prepared by Sladden Engineering dated December 7, 2022; Project No. 544-22493, Report No. 22-12-717
In accordance with your request, we have reviewed the above referenced Geotechnical Investigation report and Geotechnical Update as they relate to the design and construction of the residences proposed for the properties identified as APN's 689-130-005, 014,017,018, 689-090-003 & 689-140-022 located on Peterson Road north of Mirage Cove Drive in the City of Rancho Mirage, California. It is our understanding that the proposed residential structures will be of relatively lightweight wood-frame or light gauge steel-frame construction and will be supported by conventional shallow spread footings and concrete slabs on grade.

The referenced reports include recommendations pertaining to the design and construction of residential structure foundations. Based upon our review of the referenced report, our previous experience on the project site and our understanding of the proposed construction, it is our opinion that the structural values and remedial grading recommendations included in this report remain applicable for the design and construction of the residential structures, except as amended herein.

The proposed residential buildings may be supported upon conventional shallow spread footings. Conventional shallow spread footings should be bottomed into properly compacted engineered fill soil a minimum of 12 inches below lowest adjacent grade. Continuous footings should be at least 12 inches wide and isolated pad footings should be at least 2 feet wide.

Continuous footings and isolated pad footings may be designed utilizing allowable bearing pressures of 1800 psf and 2000 psf, respectively. Allowable increases of 250 psf for each additional 1 foot of width and 250 psf for each additional 6 inches of depth may be utilized, if desired. The maximum allowable bearing pressure should be 2500 psf. The recommended allowable bearing pressures may be increased by one-third for wind and seismic loading.

Sladden Engineering

713
June 7, 2024 -3-Project No. 544-22493
24-06-294
To provide firm and uniform foundation bearing conditions, the primary foundation bearing soi l should be over-excava ted a nd recompacted. Over-excavation s hould extend to a minimu m depth of 5 feet below exis ting grade or 5 feet below the bottom of the footings, whichever is deeper. Once a d equa te remo vals have been verified, the exposed nati ve soil should be moisture conditioned to n ear optimum moisture content and compacted to at least 90 pe rcent relative compaction. Th e previously removed materia l may then be p laced in thin lifts at near optimum moisture content and compacted to at least 90 percent relative compac ti on compacted engineered fil I. Removals s hould extend a t least 5 feet laterally beyond the footing limits.

We appreciate the opportunity to p rovide service to you on this project. If you have any questions regarding this le tter or the referenced report, please contact the undersigned.

Respectfully sub • •

SLADDEN ENG
Bre tt L. Anderson
Principal Engin eer
SER/cg
Copies: pdf/ Add ressee
Principal Geologist
S/adden Engineering

71 4
Project: PROPOSED RESIDENllAL SUBDMSIONS
Project Number: 544-22493
Client: KONSTANTINOS PATIS
Site lat/long: 33.7690/-116.4391
Contro lling Seismic Source: San Andreas Fault

REFERENCE
Site Class
Site Oass D -Table 11.4-1
Site aass D -21.3(ii)
o.2•1s0,/s,,.J
s,J'Sn,
Fundamental Period (1.2.8.2)
Seismic Design Maps or fig 22-14
Equation 11.4-4 -2/3"5,.1
Equation 11.4-2 -fv"S, 1
1 -Fv.s determined by Section 2L3
Cr -At Perocls =1.0, Cr=C:.-.

NOTATION
C, D, D default, or E
F,
F,
To
Ts
T
1 ,
So,
s,.,
c..
c"'
VALUE
Dmeasured

1.0 2.5

0.205

1.027
Period
8 1.0433

1.5650

0.913

0.894
• c.ioa N5ed de1:in vi :o ,. See accompanying data for Site Speofic Design val ues. ~
Sladden Engineering

SITE-SPECIFIC GROUND MOTION ANALYSIS
(ASCE 7-16)
REF:ERENCE
Fv (Table 11.4-Z)[Used for General Spectrum)
Design M aps
Design Maps
Equation 11.4-1 -F."S.

Equation 11.4-3 -2/3°S,,..

Design Maps
Table 11.8-1
Equation 11,8-1-F,.,. "-PGA
Section 21.5.3
Design Maps
Design Maps
RIS1< COEFFIOENT

N OTATION
F,
s,
s,
s.,.

Sn.

PGA
FPGA
PGA,,
80%of PGA.,
c,..
c,u
VAl.UE REfERENCE

1.7 TI247 0.2°(S.,,/Sos)

0.6267 ~/5.,.

Equation 11.4-4 -2/3°S,,.,,
Equation 11.4-2-F,., "51
~
1 .1

0.588

0.913

0.894
Cr -At Periods between 0.2 and 1.0
usetrendline formula to complete
Mapped values from https·l,fhanrds at:council.011/
bttp~•/IW¥NJ.ietSm)("maps.t:IIJ/

NOTATION VALUE
To
Ts
s.,,
~,
Period Cr

0.200 0.913
0,300 0.91.1

0.400 o.908

0.500 0 .906

0.600 0.904

0.680 0.902

1.000 0.894

71 5
~
Sladden Engineering
PROBABILISTIC SPECTRA 1
2% in SO year Exceedence
Max Directional Probabilistic Project No: 544--22493
Period UGHM RTGM
Saile Factor' MCE

0.010 0.844 0.816 1.19 0.971
0 .100 1.418 1.392 1.19 1.656

0.200 1.868 1.853 1.20 2.224

0.300 2.145 2.050 1.22 2.S01

0.500 2.123 1.967 1.23 2.419

0.750 1.7SO 1 .606 1.24 1.991

1.000 1.497 1.346

2.000 0.867 0.770

3.000 0.597 0.5 27

1.24 1.24
125

1.669

0.955

0.659
1 Data Sources:
https:/Jearthguake.usgs.gov/hazards/lnteragive/
httos://earthquake.usgs.gov/designmaps/rum/

4.000 0 .441 0.386 1.25 0.483

5.000 0.337 0 .29 7 1.26 0.374 2 ShahiaBaker RotDlOO/RotoSO Factors (2014) Probabilistic PGA: 0.844
Is Probabilistic Sacmui babillstic MC£R

0.000 I 1.000 2-<XlO 3.000 4.000 5.000
Period (seconds)

71 6
~
Sladde n E n gineering

DETERMINISTIC SPECTRUM
largest Amptitudes of Ground Motions Considering All Sources C.klllated using Weighted Mean of Attenuation Equations1 ControDlng Source: San Andreas fault
Is Probabilistic Sa-1<1.2Fa? NO
Deterministic PSa Max Directional Scale Section 21.2.2
Pa"iod Median + 1.o for 5% Factor'
Deterministic MCE Scaling Factor
Damping Applied
Project No: 544-22493

0.010 0 .685 1.19 0.815 0.8 15

0.020 0.685 1.19 0.815 0.815

0.030 0.695 1.19 0.827 0.827

0.050 0.739 1.19 0.880 0.880

0.075 0 .886 1.19 1.054 1.054 Is Detem,instic sa-1<15°Fa? NO

0.100 1.052 1.19 1.252 1.252 Section 21.2.2 Scaling Factor: N/A

0.150 1.296 1.20 L555 1.555 Deterministic PGA: 0.685

0.200 1.453 1.20 1.743 1.743 Is Deterministic PGA-F,...."0.5? YES

0.250 1.562 1.21

0.300 1.620 1.22

0.400 1.636 1.23

0.500 1583 1.23

0.750 l .283 L24

1.000 1.079 1.24
1-500 0.779 1.24

2.000 0.595 1.24

3.000 0.409 1.25

4.000 0.289 1.25

5.000 0.215 1.26

1.889

1.976

2.012

1.947

1.591

1.338

0.966

0.738
0 .512

0.361

0.271

1.889

1.976
Z.012

1.947

1.591

1.338
0 .966

0.738
0-512

0.361

0.271
1 NGAWest 2 GMP€ worbheeUnd
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'Shohi-Bu■r Ra tDlOO/R.01050 Factors
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71 7
~
Period Probabilistic
MCE

0.010 0.971

0.100 1.656

0.200 2.224

0.300 2.501

0.500 2.419

0.750 1.991

1.000 1 .669

2.000 0.955

3.000 0.659

4.000 0.483

5.000 0.374
SOS:

SD1 :

SMS:

SMl:

Site Specific PGAm:

SITE SPECIFIC SPECTRA -•• -~
Deterministic Site-Specific

MCE MCE

0.815 0.815

1.252 1 .252

1.743 1.743

1.976 1 .976

1.947 1.947

1.591 1 .591

1.338 1 .338

0.738 0.738

0.512 0.512

0.361 0.361

0.271 0.271
ASCE 7-16: Section 21.4
Site Specific
Calcu lated I Design
Value Value

1.186 1.186

1.024 1.024

1.779 1.779
1 .536 1.536

0.685 0 .685
Site Class: D measured
Seismic Design Catego ry -Short• D
Seismic Design Category -ls* D
* Risk Categories I, II, or Ill
Sladden Engineering
Design Response
Spectrum (Sa)
ASCE 7 SECTIO N 21.3
Period General Spectrum 80% General
Response Spectrum
0 .543 0.005 0.421 0.337
0835 0.010 0.436 0.349
1162 0.020 0.466 0.373
1 .318 0.030 0.495 0.396

1.298 0 .050 0 .555 0444

1.061 0 .060 0.584 0.468

0.892 0.075 0.629 0.503

0.492 0.090 0.674 0.539

0.341 0.100 0.703 0.563
0 .241 0.110 0.733 0.586
0 .181 0.120 0.763 0.610
0 .136 0.810 0.648

0.150 0.852 0 .681
0 .160 0.881 0.705
0 .170 0.911 0.729

0.180 0.941 0.753

0.200 1.000 0.800

0.250 1.016 0.813

0.300 1.016 0.813

0.400 1.016 0.813
0 .500 1.016 0.813

0.600 1.016 0.813

0.640 1.016 0.813

0.750 1.016 0.813

0.850 1.016 0.813

0.900 1.016 0.813

0.930 1.016 0.813

1.000 1.016 0.813

1.500 0.696 0.556

2.000 0.522 0.417

3.000 0.348 0.278

4.000 0 .261 0.209

5.000 0.209 0.167
Project No: 544-22493

71 8

3.00 SPECTib\-l :Si>ONSE ACfEl:ERATIONS-r t-1-~ ~ ~ I ! '. ' : : I : I I + J. t

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~ASCE 7 Section 21.3 General Spectrum
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MAP NO.

TRACT
38971
A PORTION OF THE NW QUARTER OF SECTION 2, TOWNSHIP 5 SOUTH, RANGE 5 EAST, SAN

BERNARDINO BASE AND MERIDIAN, IN THE COUNTY OF RIVERSIDE, STATE OF CALIFORNIA FOMOTOR ENGINEERING APRIL 2024
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BEVEF!LY Hlll5, CA go212-2112a
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R,lNCHO lollAACE. CA n270
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722

GEOTECHNICAL INVESTIGATION

PROPOSED RESIDENTIAL DEVELOPMENT
PETERSON ROAD • 20 ACRES

RANCHO MIRAGE, CALIFORNIA
• Prepared By-
S lad den Engineering
45090 Golf Center Parkway, Suite F
Indio, California 92201
(760) 772·3893
Sladden Engineering

723
Sladden Engineering
45090 Golf Center Parkway, Sulla F, lndlo, Callfornla 112201 (760) 863-0713 Fax (760) 863-0847 6782 Stanton Avenue, Suite A, Buena Par11, CA 90621 (714) 623-0952 Fax (714) 523-1369 460 Egan Avenue, Beaumont, CA 92223 (951) 845-7743 Fax (951) 845-8863 800 E. Florida Avenue, Hemet, CA 92543 (951) 766-8777 Fax (951) 766-8778 October 19, 2010
IMH Special Asset NT 100, LLC
4900 North Scottsdale Blvd, Suite 5000
Scottsdale, Arizona 85251
Project:

Subject:

Proposed Residential Subdivision
Peterson Road • 20 Acres
Rancho Mirage, California
Geotechnical Investigation
Project No. 544-10159
10·10·237
Sladden Engineering is pleased to present the results of our geotechnical investigation for the proposed residential subdivision to be constructed adjacent to Peterson Road and north of Mirage Cove Drive in the City of Rancho Mirage, California. Our services were completed in accordance with our proposal for geotechnical engineering services dated August 31, 2010 and your authorization to proceed with the work. The purpose of our investigation was to explore the subsurface conditions at the site in order to provide recommendations for foundation design and site preparation, Evaluation of environmental issues and hazardous wastes was not included within the scope of services provided.

The opinions, recommendations and design criteria presented in this report are based on our field exploration program, laboratory testing and engineering analyses. Based on the results of our investigation, it is our professional opinion that the proposed project is feasible provided the recommendations presented in this report are implemented m the design and carried out through construction.

We appreciate the opportunity lo provide service lo you on this project. If you have any questions regarding this report, please contact the undersigned.

Respectfully submitted,

SLAOOEN ENGINEERING
SER/me
Copies: 6/ Addressee
hewJ.

Ohrt
, 8587 •
:+-~
C /1,\.'(f 'i:Jf:

Stadden Engineering

724

GEOTECHNICAL INVESTIGA TJON

PROPOSED RESIDENTIAL DEVELOPMENT
PETERSON ROAD -20 ACRES

RANCHO MIRAGE, CALIFORNIA
October 19, 2010

TABLE OF CONTENTS
INTRODUCTION .................................................................................................................................... 1 PROJECT DESCRIPTION ....................................................................................................................... 1 SCOPE OF SERVICES ............................................................................................................................. 2 SITE CONDffiONS ................................................................................................................................. 2 GEOLOGIC SETTING ............................................................................................................................ 3 SUBSURFACE CONDITIONS ................................................................................................................ 3 SEISMICITY AND FAUL TING .............................................................................................................. 4 CBC DESIGN PARAMETERS ................................................................................................................. 5 GEOLOGIC HAZARDS ........................................................................................................................... 5 CONCLUSIONS ...................................................................................................................................... 7 EARTHWORK AND GRADING .......................................................................................................... 8 Stripping ........................................................................................................................................... 8 Preparation of Building Areas ........................................................................................................ 8 Compaction ....................................................................................................................................... 8 Shrinkage and Subsidence ............................................................................................................... 9 FOUNDATIONS SPREAD FOOTINGS ............................................................................................... 9 SLABS-ON-GRADE ................................................................................................................................ 10 SOLUBLE SULFATES ............................................................................................................................. 10 UTILITY TRENCH BACKFILL.. ............................................................................................................ 11 EXTERIOR CONCRETE FLATWORK ................................................................................................. 11 DRAINAGE .............................................................................................................................................. 11 LIMITATIONS ......................................................................................................................................... 11 ADDITIONAL SERVICES ...................................................................................................................... 12 REFERENCES .......................................................................................................................................... 13

FIGURES-
APPENDIXA

APPENDIXB-
Site Location Map
Regional Geologic Map
Borehole Location Plan
Field Exploration
Laboratory Testing
Stadden Engineering

725
October 19, 2010 - 1 -

INTRODUCTION
Project No. 544-10159
10-10-237
This report presents the results of the geotechnical investigation performed by Stadden Engineering (Stadden) for the proposed future residential development to be located adjacent to Peterson Road and north of Mirage Cove Drive in the City of Rancho Mirage, California, The site consists of seven (7) parcels that are located on the NW ¼ of Section 2, Township 5 South, Range 5 East (S8BM) al approximately 33.76919" north latitude and 116.43917" west longitude. The approximate location of the site is indicated on the Site Location Map (Figure 1).

Our investigation was conducted in order to evaluate the engineering properties of the subsurface materials, to evaluate their in-situ characteristics, and to provide engineering recommendations and design criteria for site preparation, foundation design and the design of various site improvements. This study also includes a review of published and unpublished geotechnical and geological literature regarding seismicity at and near the subject site.

PROJECT DESCRIPTION
Based on our preliminary conversations, it is our understanding that future construction al the site will consist of constructing a new residential subdivision. Sladden anticipates that the proposed project will also include new concrete flatwork, paved roads and various other associated site improvements. For our analyses we expect that the future residences will consist of relatively lightweight one-story or two-story, wood-frame structures supported on conventional shallow spread footings and concrete slabs-on-grade.

Grading plans and finished floor elevation were not available at the time of this report. However, based on the relatively level nature of the site, Stadden expects that grading will be limited lo minor cuts and fills in order to accomplish the desired pad elevations and provide adequate gradients for site drainage.

This does not include the removal and recompaction of foundation bearing soil within the building envelope. Upon completion of precise grading plans, Stadden should be retained in order to ensure that the recommendations presented within in this report are incorporated into the design of the proposed project.

Structural foundation loads were not available at the time of this report. Based on our experience with relatively lightweight structures, we expect that isolated column loads will be less than 20 kips and continuous wall loads will be less than 2.0 kips per linear foot. If these assumed loads vary significantly from the actual loads, we should be consulted to verify the applicability of the recommendations provided.

S/adden Engineering

726
October 19, 2010 - 2 -

SCOPE OF SERVICES
Project No. 544-10159
10-10-237
The purpose of our investigation was to determine specific engineering characteristics of the surface and near surface soil in order to develop foundation design criteria and recommendations for site preparation. Exploration of the site was achieved by drilling ten (10) exploratory boreholes lo depths between approximately 21,5 and 51.5 feet below (existing) ground surface (bgs). Specifically, our site characterization consisted of the following tasks:
• Site reconnaissance to assess the existing surface conditions on and adjacent to the site. • Advancing ten (10) exploratory boreholes to depths between approximately 21.5 and 51.5 feel bgs in order to characterize the subsurface soil conditions, Representative samples of the soil were classified in the field and retained for laboratory testing and engineering analyses. • Performing laboratory testing on selected samples lo evaluate their engineering characteristics. • Reviewing geologic literature and discussing geologic hazards. • Performing engineering analyses to develop recommendations for foundation design and site preparation.
• The preparation of this report summarizing our work at the site,

SITE CONDITIONS
The subject site is located on east and west of Peterson Road and north of Mirage Cove Drive in the City of Rancho Mirage. The site consists of seven (7) undeveloped parcels that occupy a combined area of approximately 20 acres. The site is located in an area of custom residential homes and is generally bounded by residential structures to the immediate west, Mirage Cove Drive to the south, residential properties to the east and the Whitewater River Channel to the immediate north. Al the lime of our -investigation, the site had been cleared of vegetative-cover-and structures.

Based on our review of the United States Geological Survey (USGS) 7.5' Cathedral City Quadrangle map (1981) and Riverside County Land Information System (RCLIS, 2010), the site is situated al an approximate elevation of 260 feet above mean sea level (AMSL).

No natural ponding of water or surface seeps were observed at or near the site during our investigation conducted on September 29, 2010. Site drainage appears to be controlled via sheet flow and surface infiltration. Regional drainage is provided by the Whitewater River that is located to the immediate north of the site.

Stadden Engineering

727
October 19, 2010

GEOLOGIC SETTING
Project No. 544-10159
10-10-237
The project site is located within the Colorado Desert Physiographic Province (also referred to as the Salton Trough) that is characterized as a northwest-southeast trending structural depression extending from the Gulf of California to the Banning Pass. The Salton Trough is dominated by several northwest trending faults, most notably the San Andreas Fault system. The Salton Trough is bounded by the Santa Rosa San Jacinto Mountains on the southwest, the San Bernardino Mountains on the north, the Little San Bernardino • Chocolate -Orocopia Mountains on the east, and extends through the Imperial Valley into the Gulf of California on the south.

A relatively thick sequence (20,000 feet) of sediment have been deposited in the Coachella Valley portion of the Salton Trough from Miocene to present times. These sediments are predominately terrestrial in nature with some lacustrian (lake) and minor marine deposits. The major contributor of these sediments has been the Colorado River. The mountains surrounding the Coachella Valley are composed primarily of Precambrian metamorphic and Mesozoic "granitic" rock.

Rancho Mirage City CouncilDecember 4, 2025

Rancho Mirage City Council
December 4, 2025