SW3220805_Design Calculations_20221230

STORMWATER MANAGEMENT REPORT
PREPARED FOR:
LGI HOMES NC, LLC
3037 SHERMAN DRIVE
LANCASTER, SC 39720
BEPC #NCC202055
March 28, 2022
Revised: December 30, 2022
PREPARED BY:
BOHLER ENGINEERING, NC, PLLC
1927 S. TYRON ST. SUITE 310
CHARLOTTE, NC 28203
[phone]
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046878 _
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6 N MG 12/30/22
NORTH CAROLINA LICENSE #046878
R. ALLEN MCDOWELL, P.E.
PROFESSIONAL CERTIFICATION: I HEREBY CERTIFY THAT THESE DOCUMENTS WERE PREPARED OR APPROVED BY ME, AND
THAT I AM A DULY LICENSED REGISTERED ENGINEER UNDER THE LAWS OF THE STATE OF NORTH CAROLINA
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CIVIL & CONSULTING ENGINEERS• SURVEYORS -TRAFFIC CONSULTANTS
www.bohlereng.com

Table of Contents
GeneralProject Description/Stormwater Management...................................................................... 3
Appendix............................................................................................................................................... 4
RainfallIntensity Data....................................................................................................................
SoilMap.......................................................................................................................................
DesignSpreadsheets.....................................................................................................................
HydroCADOutput..........................................................................................................................
StormsewersOutput......................................................................................................................
RiprapCalculations........................................................................................................................
Erosion Control Calculations...........................................................................................................

General Project Description/Stormwater Management
GENERAL PROJECT OVERVIEW AND EXISTING CONDITIONS
The subject site is located at 310 Limestone Terrace in Granite Quarry, NC. The project site
consists of approximately 9.79 acres of mostly open fields. The site generally drains
approximately equally to the east and west. Flow to the east drains toward an existing dry
pond to the eastern property line while flow to the west drains to a previously approved wet
pond (BMP3) associated with SW3171201.
The site is majority grassland with type B/C soils, with average existing slopes of 2% to 8%.
STORMWATER REQUIREMENTS AND DESIGN OVERVIEW
This project is located in the Yadkin Pee -Dee river basin and is adjacent to Crane Creek. This
project is classified as a high -density because the largest drainage area has greater than 24%
built upon area.
The proposed project will include 53 single family townhome units and associated development.
For the western portion of the site, stormwater is directed to an existing inlet which ultimately
drains to an existing wet pond (BMP3). Impervious calculations are attached to this report
showing this townhome project stays below the previously permitted value for "future
development". Therefore, no additional BMP is proposed for this drainage area.
For the eastern portion of the site, the existing dry pond footprint will be expanded and the
system will be converted to a wet pond to treat for water quality and quantity before
discharging to the adjacent NCDOT stormwater network.
Stormwater will be conveyed through pipe systems and sheet flow discharge to the proposed
BMP and inlet in a non -erosive manner to maintain natural drainage patterns.
Stormwater quality treatment systems shall treat the runoff generated from the first inch of
rainfall.
All structural stormwater treatment systems used to meet these requirements shall be designed
to have a minimum of 85% average annual removal for total suspended solids.
General engineering design criteria shall be accordance with 15 A NCAC 2H. 1008(c) in the
design manual.
The peak discharge is attenuated for both the 2-year, 24-hr storm and the 25-year, 24-hr storm
events. The 100-year, 24-hr storm event has been analyzed to provide 1' of freeboard to the
top of berm.
Areas not controlled by systems due to topographic challenges are sheet flowing to roadside
inlets along Limestone Terrace

Appendix

548150
35o 36'30"N
35o 36' 21" N
548150 548190 548230 548270 548310 548350 548390
Map Scale: 1:1,970 if printed on A landscape (11" x 8.5") sheet.
$ Meters N
0 25 50 100 150
Feet
0 50 100 200 ?00
Map projection: Web Mercator Conermordinates: WGS84 Edge tics: UTM Zone 17N WGS84
usoA Natural Resources Web Soil Survey
Conservation Service National Cooperative Soil Survey
Hydrologic Soil Group —Rowan County, North Carolina
(Granite Quarry Soil Map)
548190 548230 548270 548310 548350 548390 548430
548470 548510
548430 548470 548510
a
548550
35o 36' 30" N
35o 36' 21" N
548550
m
a
3/23/2022
Pagel of 4

Hydrologic Soil Group —Rowan County, North Carolina
(Granite Quarry Soil Map)
MAP LEGEND
Area of Interest (AOI)
0
Area of Interest (AOI)
Soils
Soil Rating
Polygons
0
A
0
A/D
0
B
0
B/D
C
0
C/D
0
D
0
Not rated or not available
Soil Rating
Lines
r 0
A
r 0
A/D
B
B/D
N 0
C
r 0
C/D
r 0
D
r 0
Not rated or not available
Soil Rating
Points
0
A
0
A/D
0
B
0
B/D
❑ C
0 C/D
0 D
❑ Not rated or not available
Water Features
Streams and Canals
Transportation
— Rails
­0 Interstate Highways
US Routes
Major Roads
Local Roads
Background
D6 Aerial Photography
MAP INFORMATION
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: Rowan County, North Carolina
Survey Area Data: Version 19, Jan 21, 2022
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Apr 6, 2021—Apr 7,
2021
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.
usoA Natural Resources Web Soil Survey 3/23/2022
Conservation Service National Cooperative Soil Survey Page 2 of 4

Hydrologic Soil Group —Rowan County, North Carolina
Granite Quarry Soil Map
Hydrologic Soil Group
Map unit symbol
Map unit name
Rating
Acres in AOI
Percent of AOI
CeB2
Cecil sandy clay loam, 2
to 8 percent slopes,
moderately eroded
B
7.6
81.9%
VnB2
Vance sandy clay loam,
2 to 8 percent slopes,
moderately eroded
C
1.7
18.1 %
Totals for Area of Interest
9.3
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.
USDA Natural Resources Web Soil Survey 3/23/2022
Conservation Service National Cooperative Soil Survey Page 3 of 4

Hydrologic Soil Group —Rowan County, North Carolina
Granite Quarry Soil Map
Rating Options
Aggregation Method: Dominant Condition
Component Percent Cutoff.- None Specified
Tie -break Rule: Higher
USDA Natural Resources Web Soil Survey 3/23/2022
Conservation Service National Cooperative Soil Survey Page 4 of 4

3/23/22, 3:01 PM
Precipitation Frequency Data Server
NOAA Atlas 14, Volume 2, Version 3
Location name: Salisbury, North Carolina, USA*
�'°
Latitude: 35.6067*, Longitude:-80.466°
Elevation: 765.37 ft**
*source: ESRI Maps
source: USGS
POINT PRECIPITATION FREQUENCY ESTIMATES
G.M. Bonnin, D. Martin, B. Lin, T. Parzybok, M.Yekta, and D. Riley
NOAA, National Weather Service, Silver Spring, Maryland
PF tabular I PF graphical I 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
1 100
100
200
500
1000
0.388
0.458
0.535
0.588
0.647
0.686
0.721
0.750
0.782
0.802
5-min
(0.357-0.420)
(0.423-0.499)
(0.492-0.581)
(0.539-0.637)
(0.591-0.700)
(0.624-0.743)
(0.652-0.781)
(0.675-0.815)
(0.696-0.850)
(0.709-0.874)
0.619
0.733
0.856
0.940
1.03
1.09
1.15
1.19
1.24
1.26
10-min
(0.571-0.672)
(0.677-0.798)
(0.788-0.930)
(0.862-1.02)
(0.942-1.12)
(0.993-1.18)
1 (1.04-1.24)
1 (1.07-1.29)
1 (1.10-1.35)
1 (1.12-1.38)
0.774
0.921
1.08
1.19
1.31
1.38
1.45
1.50
1.56
1.59
15-min
(0.714-0.839)
(0.850-1.00)
(0.996-1.18)
(1.09-1.29) 11
(1.19-1.42)
1 (1.26-1.50)
1 (1.31-1.57)
1 (1.35-1.63)
1 (1.39-1.69)
1 (1.40-1.73)
1.06
1.27
1.54
1.72
1.94
2.08
2.22
2.34
2.48
2.57
30-min
(0.978-1.15) 1
1 (1.42-1.67) 1
1 (1.77-2.10)
1 (1.89-2.26)
(2.01-2.40)
(2.10-2.54)
(2.21-2.69)
(2.27-2.80)
1.32
1.60
1.97
2.24
2.58
2.82
3.06
3.28
3.55
3.75
60-min
(1.22-1.44)1
(1.47-1.74) 1
1 (2.35-2.79)
1 (2.57-3.06)
(2.76-3.31)
(2.95-3.56)
(3.17-3.87)
(3.31-4.09)
1.53
1.85
2.30
2.63
3.06
3.39
3.70
4.00
4.40
4.68
2-hr
(1.40-1.67)1
(1.70-2.02) 11
(2.11-2.51) 11
(2.41-2.87) 11
(2.79-3.33)
1 (3.06-3.68)
1 (3.33-4.03)
1 (3.57-4.37)
1 (3.88-4.80)
1 (4.09-5.13)
1.63
1.96
2.45
2.82
3.31
3.69
4.06
4.43
4.92
5.29
3-hr
(1.50-1.78) 11
(1.81-2.15) 11
(2.25-2.68) 11
(2.58-3.07) 11
(3.01-3.60)
1 (3.33-4.00)
1 (3.64-4.40)
1 (3.94-4.81)
1 (4.32-5.35)
1 (4.59-5.77)
1.97
2.37
2.96
3.42
4.03
4.51
4.99
5.47
6.12
6.62
6-hr
(1.81-2.15)
(2.18-2.59)
(2.72-3.24) 11
(3.13-3.72) 11
(3.66-4.37)
1 (4.07-4.89)
1 (4.47-5.41)
1 (4.85-5.93)
1 (5.35-6.65)
1 (5.72-7.20)
2.32
2.80
3.51
4.07
4.83
5.44
6.06
6.70
7.58
8.26
12-hr
(2.14-2.53)
(2.58-3.06) 1
1 (3.73-4.43) 11
(4.39-5.24)
1 (4.90-5.89)
1 (5.41-6.55)
1 (5.92-7.23)
1 (6.58-8.1 7)
1 (7.07-8.91)
2.77
3.34
4.19
4.86
5.76
6.48
7.21
7.97
8.99
9.80
24-hr
(2.58-2.97)1
(3.12-3.59) 11
(3.91-4.50) 11
(4.52-5.21) 11
(5.35-6.18)
1 (6.01-6.95)
1 (6.67-7.73)
1 (7.34-8.55)
1 (8.25-9.66)
1 (8.96-10.5)
3.21
3.87
4.82
5.56
6.56
7.35
8.16
8.98
10.1
11.0
2-day
(3.00-3.44)
(3.62-4.14) 11
(4.50-5.15) 11
(5.19-5.94) 11
(6.11-7.01)
1 (6.83-7.86)
1 (7.55-8.71)
1 (8.29-9.60)
1 (9.28-10.8)
1 (10.1-11.8)
3.42
4.11
5.09
5.86
6.90
7.73
8.57
9.43
10.6
11.5
3-day
(3.20-3.65)
1 (4.76-5.43) 11
(5.47-6.25) 11
(6.43-7.37)
1 (7.18-8.25)
1 (7.94-9.15)
1 (8.72-10.1)
1 (9.76-11.3)
1 (10.6-12.3)
3.63
4.35
5.36
6.16
7.25
8.11
8.98
9.88
11.1
12.1
4-day
(3.40-3.86) 11
(4.08-4.64) 11
(5.02-5.71) 11
(5.76-6.56) 11
(6.75-7.73)
1 (7.54-8.65)
1 (8.33-9.59)
1 (9.14-10.6)
1 (10.2-11.9)
1 (11.1-12.9)
4.18
4.99
6.07
6.92
8.09
9.02
9.96
10.9
12.2
13.3
7-day
(3.95-4.45) 11
(4.71-5.30) 11
(5.72-6.44)
(6.51-7.35) 11
(7.59-8.59)
1 (8.44-9.58)
1 (9.29-10.6)
1 (10.2-11.6)
1 (11.3-13.1)
1 (12.3-14.2)
4.77
5.67
6.81
7.70
8.90
9.84
10.8
11.7
13.0
14.0
10-day
(4.52-5.05)
(5.37-6.00) 11
(6.45-7.20)
1 (8.39-9.41)
1 (9.26-10.4)
1 (10.1-11.4)
1 (11.0-12.4)
1 (12.2-13.8)
1 (13.0-14.9)
6.42
7.57
8.94
10.0
11.5
12.6
13.7
14.9
16.5
17.7
20-day
(6.11-6.73) 1
1 (8.49-9.38) 11
(9.51-10.5) 11
(10.9-12.0)
1 (11.9-13.2)
1 (13.0-14.4)
1 (14.0-15.7)
1 (15.4-17.4)
1 (16.5-18.7)
7.93
9.33
10.8
12.0
13.5
14.7
15.9
17.0
18.5
19.7
30-day
(7.57-8.30) 11
(8.90-9.75) 11
(10.3-11.3)
(11.4-12.5)
(12.9-14.1)
(14.0-15.4)
(15.0-16.6)
(16.1-17.8)
(17.5-19.5)
(18.5-20.7)
9.98
11.7
13.3
14.6
16.3
17.5
18.7
19.9
21.5
22.6
45-day
(9.58-10.4) 1
1 (12.8-13.9)
(14.0-15.2)
(15.6-16.9)
(16.7-18.3)
(17.8-19.5)
(18.9-20.8)
(20.3-22.4)
(21.4-23.7)
11.9
13.9
15.6
17.0
18.8
20.1
21.4
22.6
24.2
25.4
60-day
(11.5-12.4) JL
(13.3-14.4) JL
(15.0-16.2) JL
(16.4-17.7) JL
(18.0-19.5)
(19.3-20.9)
(20.5-22.2)
(21.6-23.5)
(23.1-25.2)
(24.1-26.5)
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 upper bounds 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
https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?Iat=35.6067&Ion=-80.4660&data=depth&units=english&series=pds 1 /4

3/23/22, 3:01 PM
Precipitation Frequency Data Server
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PDS-based depth -duration -frequency {DDF) curves
Latitude: 35.6057', Longitude:-86-4660'
---------------------
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Average recurrence interval (years)
NOAAAtlas 14, Volume 2, Version 3 Created fGMTY Wed Mar 23 19:01:18 2022
Back to Top
Maps & aerials
Small scale terrain
Average recurrence
mlerva I
{years}
— 1
2
— 5
— 10
— 25
50
100
200
500
1000
Duration
— 6-min —
2-day
— 10-min —
3-day
15-min —
4-dmy
— 3C�-min —
7-day
— 5 Wain —
1 D-day
— 2fir —
20-day
— 3-hr —
30-day
— Bfir —
45-day
— 12-n r —
60-day
24-nr
https://hdsc.nws.noaa.gov/hdsc/pfds/pfds—printpage.htmI?Iat=35.6067&Ion=-80.4660&data=depth&units=engIish&series=pds 2/4

3/23/22, 3:01 PM
AWORr�
Precipitation Frequency Data Server
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https://hdsc.nws.noaa.gov/hdsc/pfds/pfds—printpage.htmI?Iat=35.6067&Ion=-80.4660&data=depth&units=english&series=pds 3/4

3/23/22, 3:01 PM
Precipitation Frequency Data Server
Back to Top
US Department of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
National Water Center
1325 East West Highway
Silver Spring, MD 20910
Questions?: HDSC.Questions noaa.gov
Disclaimer
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3/23/22, 3:01 PM
Precipitation Frequency Data Server
NOAA Atlas 14, Volume 2, Version 3
Location name: Salisbury, North Carolina, USA*
�'°
Latitude: 35.6067*, Longitude:-80.466°
Elevation: 765.37 ft**
*source: ESRI Maps
source: USGS
POINT PRECIPITATION FREQUENCY ESTIMATES
G.M. Bonnin, D. Martin, B. Lin, T. Parzybok, M.Yekta, and D. Riley
NOAA, National Weather Service, Silver Spring, Maryland
PF tabular I PF graphical I Maps & aerials
PF tabular
PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches/hourp
Duration
Average recurrence interval (years)
1
2
5
10
25
50
1 100
100
200
500
1000
4.66
5.50
6.42
7.06
7.76
8.23
8.65
9.00
9.38
9.62
5-min
(4.28-5.04) 11
(5.08-5.99)
(5.90-6.97) 11
(6.47-7.64) 11
(7.09-8.40)
1 (7.49-8.92)
1 (7.82-9.37)
1 (8.10-9.78)
1 (8.35-10.2)
1 (8.51-10.5)
3.71
4.40
5.14
5.64
6.18
6.56
6.88
7.14
7.42
7.58
10-min
(3.43-4.03)
(4.06-4.79)
1 (5.17-6.11) 11
(5.65-6.70)
1 (5.96-7.10)
1 (6.22-7.45)
1 (6.42-7.75)
1 (6.61-8.07)
1 (6.70-8.26)
3.10
3.68
4.33
4.76
5.22
5.53
5.79
6.00
6.23
6.34
15-min
(2.86-3.36) 11
(3.40-4.01) 11
(3.98-4.71) 11
(4.36-5.16) 11
(4.77-5.66)
1 (5.03-6.00)
1 (5.24-6.28)
1 (5.40-6.52)
1 (5.54-6.77)
1 (5.60-6.91)
2.12
2.55
3.08
3.45
3.87
4.17
4.44
4.67
4.95
5.13
30-min
(1.96-2.30)
(2.35-2.77)
(2.83-3.34) 11
(3.16-3.74) 11
(3.54-4.19)
1 (3.79-4.52)
1 (4.01-4.81)
1 (4.20-5.07)
1 (4.41-5.39)
1 (4.54-5.60)
1.32
1.60
1.97
2.24
2.58
2.82
3.06
3.28
3.55
3.75
60-min
(1.22-1.44)
(1.47-1.74)
1 (2.35-2.79)
1 (2.57-3.06)
1 (2.76-3.31)
1 (2.95-3.56)
1 (3.17-3.87)
1 (3.31-4.09)
0.764
F 0.924
1.15
1.32
1.53
1.69
1.85
2.00
2.20
2.34
2-hr
(0.702-0.832)
(0.849-1.01) 1
1 (1.39-1.67)
(1.53-1.84)
1 (1.66-2.01)
1 (1.79-2.18)
1 (1.94-2.40)
1 (2.05-2.56)
0.541
0.654
0.817
0.939
1.10
113
1.35
1.47
1.64
1.76
3-hr
(0.498-0.591)
(0.602-0.715)
(0.750-0.891)
(0.859-1.02)
(1.00-1.20)
1 (1.11-1.33)
1 (1.21-1.47)
1 (1.31-1.60)
1 (1.44-1.78)
1 (1.53-1.92)
0.329
0.396
0.495
0.571
0.673
0.752
F 0.832
F 0.913
1.02
1.11
6-hr
(0.303-0.359)
(0.365-0.433)
(0.454-0.540)
(0.522-0.622)
(0.611-0.730)
(0.679-0.816)
(0.746-0.903)
(0.810-0.991)
1 (0.894-1.11)
1 (0.955-1.20)
0.193
0.232
0.291
0.338
0.401
0.451
0.503
0.556
0.629
0.685
12-hr
(0.178-0.210)
(0.214-0.254)
(0.268-0.318)
(0.309-0.368)
(0.364-0.435)
(0.407-0.489)
(0.449-0.544)
(0.491-0.600)
(0.546-0.678)
(0.587-0.740)
0.115
0.139
0.175
0.202
0.240
0.270
0.301
0.332
0.375
0.408
24-hr
(0.108-0.124)
(0.130-0.149)
(0.163-0.187)
(0.189-0.217)
(0.223-0.258)
(0.250-0.290)
(0.278-0.322)
(0.306-0.356)
(0.344-0.403)
(0.373-0.439)
0.067
0.081
0.100
0.116
0.137
0.153
0.170
0.187
0.210
0.228
2-day
(0.063-0.072)
(0.075-0.086)
(0.094-0.107)
(0.108-0.124)
(0.127-0.146)
(0.142-0.164)
(0.157-0.181)
(0.173-0.200)
(0.193-0.225)
(0.209-0.245)
0.047
0.057
0.071
0.081
0.096
0.107
0.119
0.131
0.147
0.160
3-day
(0.044-0.051)
(0.053-0.061)
(0.066-0.075)
(0.076-0.087)
(0.089-0.102)
(0.100-0.115)
(0.110-0.127)
(0.121-0.140)
(0.136-0.158)
(0.147-0.171)
0.038
0.045
0.056
0.064
0.075
0.084
0.094
0.103
0.116
0.126
4-day
(0.035-0.040)
(0.043-0.048)
(0.052-0.060)
(0.060-0.068)
(0.070-0.080)
(0.079-0.090)
(0.087-0.100)
(0.095-0.110)
(0.107-0.124)
(0.115-0.135)
0.025
0.030
0.036
0.041
0.048
0.054
0.059
0.065
0.073
0.079
7-day
(0.023-0.026)
(0.028-0.032)
(0.034-0.038)
(0.039-0.044)
(0.045-0.051)
(0.050-0.057)
(0.055-0.063)
(0.061-0.069)
(0.067-0.078)
(0.073-0.084)
0.020
0.024
0.028
0.032
0.037
0.041
0.045
0.049
0.054
0.058
10-day
(0.019-0.021)
(0.022-0.025)
(0.027-0.030)
(0.030-0.034)
(0.035-0.039)
(0.039-0.043)
(0.042-0.048)
(0.046-0.052)
(0.051-0.058)
(0.054-0.062)
0.013
0.016
0.019
0.021
0.024
0.026
0.029
0.031
0.034
0.037
20-day
(0.013-0.014)
(0.015-0.017)
(0.018-0.020)
(0.020-0.022)
(0.023-0.025)
(0.025-0.028)
(0.027-0.030)
(0.029-0.033)
(0.032-0.036)
(0.034-0.039)
0.011
0.013
0.015
0.017
0.019
0.020
0.022
0.024
0.026
0.027
30-day
(0.011-0.012)
(0.012-0.014)
(0.014-0.016)
(0.016-0.017)
(0.018-0.020)
(0.019-0.021)
(0.021-0.023)
(0.022-0.025)
(0.024-0.027)
(0.026-0.029)
0.009
0.011
0.012
0.014
0.015
0.016
0.017
0.018
0.020
0.021
45-day
(0.009-0.010)
(0.010-0.011)
(0.012-0.013)
(0.013-0.014)
(0.014-0.016)
(0.015-0.017)
(0.017-0.018)
(0.018-0.019)
(0.019-0.021)
(0.020-0.022)
0.008
0.010
0.011
0.012
0.013
0.014
0.015
0.016
0.017
0.018
60-day
(0.008-0.009)
(0.009-0.010)
(0.010-0.011)
(0.011-0.012)
(0.013-0.014)
(0.013-0.015)
(0.014-0.015)
(0.015-0.016)
(0.016-0.018)
(0.017-0.018)
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 upper bounds 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
https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?Iat=35.6067&Ion=-80.4660&data=intensity&units=english&series=pds 1 /4

3/23/22, 3:01 PM
M 61616IMl
1.000
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Precipitation Frequency Data Server
PD5-based intensity -duration -frequency (IDF) curves
Latitude: 35.6067', Longitude:-80.4660'
t t
Jr t
L
N
N r{4
N rq
rq
rq
N rq
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1 2 5 10 25 50 100 200 500 10D4
Average recurrence interval (years)
NOAA Atlas 14, Volume 2, Version 3 Created {GMTY Wed Mar 23 19:01:48 2022
Back to Top
Maps & aerials
Small scale terrain
Average recurrence
interval
{years}
— 1
2
— 5
— 10
— 25
50
100
200
500
1000
Duration
— 6-min —
2-day
— 10-min —
3-day
15-min —
4-dmy
— 3C�-min —
7-day
— 6 Wain —
1 o-day
— 2fir —
20-day
— 3-rr —
30-day
— Bfir —
45-day
— 12-n r —
60-day
24-nr
https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.htmI?Iat=35.6067&Ion=-80.4660&data=intensity&units=english&series=pds 2/4

3/23/22, 3:01 PM
AWORr�
Precipitation Frequency Data Server
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Large scale terrain
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https://hdsc.nws.noaa.gov/hdsc/pfds/pfds—printpage.htmI?Iat=35.6067&Ion=-80.4660&data=intensity&units=english&series=pds 3/4

3/23/22, 3:01 PM
Precipitation Frequency Data Server
Back to Top
US Department of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
National Water Center
1325 East West Highway
Silver Spring, MD 20910
Questions?: HDSC.Questions noaa.gov
Disclaimer
https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.htmI?Iat=35.6067&Ion=-80.4660&data=intensity&units=english&series=pds 4/4

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REVISIONS
REV DATE COMMENT DRAWN BY
CHECKED BY
1 12/30/22 NCDEQ COMMENTS SWISM
RAM
Know what's below.
Call before you dig.
ALWAYS CALL 811
It's fast. It's free. It's the law.
NOT APPROVED FOR
CONSTRUCTION
THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY
REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION
DOCUMENT UNLESS INDICATED OTHERWISE.
PROJECT No.: NCC202055
DRAWN BY: RSW
CHECKED BY: RAM
DATE: 04/06/22
CAD I.D.: IDAM - 0
PROJECT:
CONSTRUCTION
DOCUMENTS
FOR
LGI HOMES, INC.
VILLAGE AT GRANITE
TOWNHOMES
310 LIMESTONE TERRACE
ROWAN COUNTY
GRANITE QUARRY, NC 28146
PARCELS 404-144, 404-145,
404-142 AND 404-143
BOHLERI
BOHLER ENGINEERING NC, PLLC
NCBELS P-1132
1927 S. TRYON STREET, SUITE 310
CHARLOTTE, NC 28203
Phone: [phone]
Fax: [phone]
NC@)3ohlerEng.com
11111111,,
cAR
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SEAL -
046878
7 °- FlyGINEE-
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SHEET TITLE:
INLET
DRAINAGE
AREA MAP
SHEET NUMBER:
C-903
REVISION 1 - 12/30/2022

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REV DATE COMMENT DRAWN BY
CHECKED BY
1 12/30/22 NCDEQ COMMENTS SWISM
RAM
1
Know what's below.
Call before you dig.
ALWAYS CALL 811
It's fast. It's free. It's the law.
NOT APPROVED FOR
CONSTRUCTION
THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY
REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION
DOCUMENT UNLESS INDICATED OTHERWISE.
PROJECT No.: NCC202055
DRAWN BY: RSW
CHECKED BY: RAM
DATE: 04/06/22
CAD I.D.: IDAM - 0
CONSTRUCTION
DOCUMENTS
FOR
LGI HOMES, INC.
VILLAGE AT GRANITE
TOWNHOMES
310 LIMESTONE TERRACE
ROWAN COUNTY
GRANITE QUARRY, NC 28146
PARCELS 404-144, 404-145,
404-142 AND 404-143
BOHLERI
BOHLER ENGINEERING NC, PLLC
NCBELS P-1132
1927 S. TRYON STREET, SUITE 310
CHARLOTTE, NC 28203
Phone: [phone]
Fax: [phone]
NC@)3ohlerEng.com
CAR
�Es�
SEAL -
046878 _j
FNGINEE��° C)
SHEET TITLE:
PRE-DEV.
DRAINAGE
AREA MAP
SHEET NUMBER:
C-902
REVISION 1 - 12/30/2022

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REVISIONS
REV DATE COMMENT DRAWN BY
CHECKED BY
1 12/30/22 NCDEQ COMMENTS SW/SM
RAM
Know what's below.
Call before you dig.
ALWAYS CALL 811
It's fast. It's free. It's the law.
NOT APPROVED FOR
CONSTRUCTION
THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY
REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION
DOCUMENT UNLESS INDICATED OTHERWISE.
PROJECT No.: NCC202055
DRAWN BY: RSW
CHECKED BY: RAM
DATE: 04/06/22
CAD I.D.: IDAM - 0
PROJECT:
CONSTRUCTION
DOCUMENTS
FOR
LGI HOMES, INC.
VILLAGE AT GRANITE
TOWNHOMES
310 LIMESTONE TERRACE
ROWAN COUNTY
GRANITE QUARRY, NC 28146
PARCELS 404-144, 404-145,
404-142 AND 404-143
BOHLERI
BOHLER ENGINEERING NC, PLLC
NCBELS P-1132
1927 S. TRYON STREET, SUITE 310
CHARLOTTE, NC 28203
Phone: [phone]
Fax: [phone]
NC@)3ohlerEng.com
v,111ii11,,,
CAR
SEAL
-,u 046878 _j
-9°o 4GINEE�°
N N c, 2aw
SHEET TITLE:
POST—DEV
DRAINAGE
AREA MAP
SHEET NUMBER:
C.903
REVISION 1 - 12/30/2022

P0I-3 Granite Quarry
ESTIMATED PROPOSED CONDITION IMPERVIOUS AREA BREAKDOWN
Note: The below impervious calculation combines POI-3 and POI-BYP3 as they both drain to previously approved Ex-BMP-3
Existing Impervious
SF
AC
Limestone Terrace (approx 225 LF x 36' BOC-BOC)
8,100 =
0.19
Proposed Impervious
Single Family Lots
Half Unit- 12 total
5,820 =
0.13
(Sidewalk = 75 sf; Unit = 410 sf)
Half Unit- 18 total
13,230 =
0.30
(Driveway = 325 sf, Unit = 410 sf)
Proposed Streets
Public Road A (approx 70 LF x 25' BOC-BOC+ 10' Sidewalk)
2,450 =
0.06
Public Road B (approx 80 LF x 25' BOC-BOC+ 10' Sidewalk)
2,800 =
0.06
PVT Alley A (approx 450 LF x 20' BOC-BOC)
9,000 =
0.21
PVT Alley B (approx 165 LF x 24' BOC-BOC)
3,960 =
0.09
Parking Areas (approx 9x18 - 9 spaces)
1,458 =
0.03
Future BUA
Future BUA Allowance
0 =
0.00
Total Impervious Area
Total Drainage Area
123,275 =
2.83
Total Impervious Area
46,818 =
1.07
Percentage Impervious Area
37.98%
37.98%
Total impervious area excluding existing Limestone Terrace
38,718 =
0.89
Allowable impervious area per SW3171201 calculations sheet 12
76,230
1.75
Note: Previously approved SW3171201 accounted for Limestone Terrace impervious area and gave an allowance for this "future
multifamily site" of 50% of 3.5ac (1.75 ac of impervious). The proposed condition has a smaller drainage area and impervious area
than
allowed, therefore, no BMP is proposed with this development.

BMP-6 Granite Quarry
ESTIMATED PROPOSED CONDITION IMPERVIOUS AREA BREAKDOWN
Existing Impervious
SF
AC
Limestone Terrace
(approx 300 LF x 36' BOC-BOC)
10,800 =
0.25
Ex Access Rd
(approx 370 LF x 20' BOC-BOC)
7,400 =
0.17
Proposed Impervious
Single Family Lots
Single Unit - 29 total
35,380 =
0.81
(Sidewalk =
75 sf; Unit = 820 sf; Driveway = 325 sf)
Half Unit- 18 total
8,730 =
0.20
(Sidewalk =
75 sf; Unit = 410 sf)
Proposed Streets
Public Road A
(approx 330 LF x 25' BOC-BOC+ 10' Sidewalk)
11,550 =
0.27
PVT Alley A
(approx 450 LF x 20' BOC-BOC)
9,000 =
0.21
PVT Alley B
(approx 220 LF x 24' BOC-BOC)
5,280 =
0.12
PVT Alley C
(approx 420 LF x 24' BOC-BOC + 5' Sidwalk)
12,180 =
0.28
Parking Areas
(approx 9x18 - 13 spaces)
2,106 =
0.05
Offsite Area
Considered 100% impervious
16,553 =
0.38
Future BUA
Future BUA Allowance
26,450 =
0.61
Total Impervious Area
Total Drainage Area
264,409 =
6.07
Total Impervious Area
145,429 =
3.34
Percentage Impervious Area
55.00%
55.00%

BMP 6 Granite Quarry
DESIGN: WATER QUALITY
GIVEN:
DRAINAGE AREA TO FACILITY = -Ac.
LAND USE = Townhomes
ESTIMATED PERCENT IMPERVIOUS = -
1) SA/DA RATIO:
AVERAGE POOL DEPTH = 4.00 FEET = Vpp/SA MDC2
PERCENT IMPERVIOUS = 55%
SA/DA = 1.64 % = 0.0164 MDC 1
SA REQUIRED = 6.07 Ac. X 0.0164
= 0.10 Ac.
= 4,336 SF
SA PROVIDED = 8,871 SF
2) TEMPORARY WATER QUALITY POOM�EQUIREMENTS
PROVIDE VOLUME TO DETAIN THE 1" SIVM EVENT ABOVE THE ELEVATION
ALLOCATED AS A PERMANENT POOL
THE VOLUME FORS" STORM EVENT CAN BE CALCULATED AS:
V, _ (Design Rainfall)(Rv)(Drainage Area)
Design Rainfall = -Inch
Drainage Area = 6.07 Acres
Rv = 0.05 + 0.9(1)
1 = Percent Impervious = 55%
Rv = 0.55 in./in.
V, = 0.276 acre-feet = 12,009 W
Pond Height above Orifice =_feet
Orifice Invert Elevation = feet
Orifice Diameter (D) _- inches = 0.13 feet
Orifice Area (a) = 0.0123
square feet
Gravitational Constant (g) = 32.2
ft/sec2
Head (H) = 1.60
feet
Driving Head (Ho) = 0.800
feet
Discharge Coefficient (CD) = 0.6
Drawdown rate (Q) = 0.053
cfs
Time (t) = 227,218
seconds = 2.63 days
63.1161112
Note:
The above calculation is based on the orifice equation where:
y[ = (, 2gH
12/30/2022 10:20 AM Page 1 of 1

Project Name: Granite Quarry Phase ❑1
Ballast Pad Design for Wet Pond
759 ft. Top of Basin
0 ft. Spillway Height
759 ft. Spillway Elev.
Box Width:
48.00 in
Box Length
48.00 in
Barrel Size:
18.00 in
48 in.BOX
Top of Basin:
759.00 ft.
Inv. Out of Pie
p
754.00 ft. 5.00
5 ft.
Spillway Height:
p Y 9
0.00 ft.
Top of Riser Elev.
759.00 ft.
754 ft. Bottom of Basin
Uplift @ Peak Elevation:
Peak Elevation =759 ft.
Peak Elevation = 5 ft.
Uplift Force= (62.4)(5 ft.)(4'4)
Uplift Force= 4992 Ibs
Volume of Concrete Required to Stabilize Riser:
4992 Ibs X 1/150 Ibs/ft^3= 33.28 cubic feet
Ballast Pad Dimensions:
Try Volume of: 5 ft. X 5 ft. X 1.5 ft.
37.5 cubic feet Ok
37.5 c.f. > or equal to 33.28 c.f. True
5 ft
Pad 18 in. RCP
Mill
48 in.BOX
Pad
Ballast Pad Dimensions: 5 ft. X 5 ft. X 1.6 ft.

Cl) O O CI) CI) O 10 11 12 13 14 15
EX BVP1 EX BMP3 EX BVP3 EX BVP5 EXgMP6 EX BVP8 BVP1 BMP3 BVP3 BVP5 B11 BVP8
Z 6 17
EX BMP6 Dry Pond Prop Modif ed BMP 6- BMP 6 PP
W e[ Pond
EX BVP6 Pre-DD.v POI BVP6 Post-Dev POI
Subcat Reach on Link Routing Diagram for Granite Quarry
Prepared by {enter your company name here}, Printed 12/30/2022
HydroCAD® 10.00-24 s/n 09920 © 2018 HydroCAD Software Solutions LLC

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 2
Summary for Subcatchment 1: EX BYP1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.50 cfs @ 11.95 hrs, Volume= 0.024 af, Depth= 2.21"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 2-YR Rainfall=3.34"
Area (ac) CN
Description
0.100 98
Paved parking, HSG B
0.030 61
>75% Grass cover, Good, HSG B
0.130 89
Weighted Average
0.030
23.08% Pervious Area
0.100
76.92% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 1: EX BYP1
Hydrograph
0.55
cfs_________________________�__�__�___�___�__�__�__�__�__
0.5
-- -- Y�/,pe II',2 -hr
0.45 2-YR' Rainfai11�3.34"
-7- -r--r--r--r--r-r--r--t--r--r----r--r--r-----I-----r--t--r--r-
0.4 RUnbff Aeei�=0.130 ad
0.35 Rpnpff'Vp1L;Mq=0.024 cif
---- -r--r--r--r--r-r--r--r--r--r----r--r--r--r-----
--r--r--r--r-
0.3
Runoff Depth=2.21�'
3 --'---J--L--L--L--1--J--L--L--L--'---'--�--L--L--'---'---'--L--L--L--'--
T'cy5.10 rrih
L 0.25 T
--r--r--r--r--r--r-r--r--r--r--r--r-r--r--r--r--r--i--r-�r
0.2 N=8$-
— —'— — L — — L — — L — — L — —'— — L — — — — L — — L-
0.15
---- --i-- --r------- --- -- --r--------- -- r--------------r----
0.1
-
-�-- J--L--L--L--1--J--L--L--L--L--�--�--L--L--�---�---�--L--L--L--i--
0.05
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)
■ Runoff

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 3
Hydrograph for Subcatchment 1: EX BYP1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.09
0.00
0.00
5.00
0.21
0.00
0.00
7.50
0.36
0.01
0.00
10.00
0.60
0.08
0.01
12.50
2.45
1.42
0.04
15.00
2.85
1.77
0.01
17.50
3.05
1.94
0.01
20.00
3.18
2.06
0.01
22.50
3.28
2.16
0.00
25.00
3.34
2.21
0.00
27.50
3.34
2.21
0.00
30.00
3.34
2.21
0.00
32.50
3.34
2.21
0.00
35.00
3.34
2.21
0.00
37.50
3.34
2.21
0.00
40.00
3.34
2.21
0.00
42.50
3.34
2.21
0.00
45.00
3.34
2.21
0.00
47.50
3.34
2.21
0.00
50.00
3.34
2.21
0.00
52.50
3.34
2.21
0.00
55.00
3.34
2.21
0.00
57.50
3.34
2.21
0.00
60.00
3.34
2.21
0.00
62.50
3.34
2.21
0.00
65.00
3.34
2.21
0.00
67.50
3.34
2.21
0.00
70.00
3.34
2.21
0.00
72.50
3.34
2.21
0.00
75.00
3.34
2.21
0.00
77.50
3.34
2.21
0.00
80.00
3.34
2.21
0.00
82.50
3.34
2.21
0.00
85.00
3.34
2.21
0.00
87.50
3.34
2.21
0.00
90.00
3.34
2.21
0.00
92.50
3.34
2.21
0.00
95.00
3.34
2.21
0.00
97.50
3.34
2.21
0.00
100.00
3.34
2.21
0.00
102.50
3.34
2.21
0.00
105.00
3.34
2.21
0.00
107.50
3.34
2.21
0.00
110.00
3.34
2.21
0.00
112.50
3.34
2.21
0.00
115.00
3.34
2.21
0.00
117.50
3.34
2.21
0.00
120.00
3.34
2.21
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 4
Summary for Subcatchment 2: EX BMP3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 1.47 cfs @ 11.98 hrs, Volume= 0.082 af, Depth= 0.50"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 2-YR Rainfall=3.34"
Area (ac) CN Description
1.960 61 >75% Grass cover, Good, HSG B
1.960 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 2: EX BMP3
Hydrograph
� � �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I � �I �I �I �I ❑Runoff
1.47 cfs
Type I( 24-Il'r
2-YR RainfaillT3.34"
Rwnbff Area=1.960 ac
1 Y Q o C1
k6noff �DepthT0.15011'
TcT5.',0 r'nii
CAN=61
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 5
Hydrograph for Subcatchment 2: EX BMP3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.09
0.00
0.00
5.00
0.21
0.00
0.00
7.50
0.36
0.00
0.00
10.00
0.60
0.00
0.00
12.50
2.45
0.18
0.19
15.00
2.85
0.31
0.07
17.50
3.05
0.38
0.05
20.00
3.18
0.44
0.04
22.50
3.28
0.48
0.03
25.00
3.34
0.50
0.00
27.50
3.34
0.50
0.00
30.00
3.34
0.50
0.00
32.50
3.34
0.50
0.00
35.00
3.34
0.50
0.00
37.50
3.34
0.50
0.00
40.00
3.34
0.50
0.00
42.50
3.34
0.50
0.00
45.00
3.34
0.50
0.00
47.50
3.34
0.50
0.00
50.00
3.34
0.50
0.00
52.50
3.34
0.50
0.00
55.00
3.34
0.50
0.00
57.50
3.34
0.50
0.00
60.00
3.34
0.50
0.00
62.50
3.34
0.50
0.00
65.00
3.34
0.50
0.00
67.50
3.34
0.50
0.00
70.00
3.34
0.50
0.00
72.50
3.34
0.50
0.00
75.00
3.34
0.50
0.00
77.50
3.34
0.50
0.00
80.00
3.34
0.50
0.00
82.50
3.34
0.50
0.00
85.00
3.34
0.50
0.00
87.50
3.34
0.50
0.00
90.00
3.34
0.50
0.00
92.50
3.34
0.50
0.00
95.00
3.34
0.50
0.00
97.50
3.34
0.50
0.00
100.00
3.34
0.50
0.00
102.50
3.34
0.50
0.00
105.00
3.34
0.50
0.00
107.50
3.34
0.50
0.00
110.00
3.34
0.50
0.00
112.50
3.34
0.50
0.00
115.00
3.34
0.50
0.00
117.50
3.34
0.50
0.00
120.00
3.34
0.50
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 6
Summary for Subcatchment 3: EX BYP3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.87 cfs @ 11.98 hrs, Volume= 0.044 af, Depth= 0.67"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 2-YR Rainfall=3.34"
Area (ac) CN
Adj
Description
0.190 98
Unconnected pavement, HSG B
0.600 61
>75% Grass cover, Good, HSG B
0.790 70
65
Weighted Average, UI Adjusted
0.600
75.95% Pervious Area
0.190
24.05% Impervious Area
0.190
100.00% Unconnected
Tc Length
Slope
Velocity Capacity Description
(min) (feet)
(ft/ft)
(ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 3: EX BYP3
Hydrograph
-------r--r--r----------r--r--,--------r--r--r----------r--r--r----
0.95 1 1
rrrrirrr - -r- -r irr- -r- -i --i irr --r-
-i -
09 __ 0.87 cfs
0.85 --r -—r--r--r--r--r—r--r--r--F----r--r- -r --r -- 'p�-11T� -hx
08
r--r--r-- - -- r--r--r-- - -- r--2- -Rainfall-- 3:14"'-
0.75
--
r--r--r-- - -- r--r--r-- --- -0n6ffrA llv&-9.790ac-
0.65
----------------------------
-
w 0.55
0.5 --r -- r--r--r _-r --, r--r --r _ _ Ru-noff Depthi---*0.67"-
0 0.451777f11-
LL
0.4 --'-- --'--' --'------------'------------' --'--------p---(�' --' --'CC-
0.35 --,---r--T--r --r--,-----T --T --r--,------T--',U(A�'t%41N ��7 -
0.3 --'-- --'--' --'------------'------------' --'------------' --' --'--
0.25
02 --'-- -'--' --'------------'------------' --'------------' --' --'--
0.15 --�
--'---'---'-----------'---'-----------'---'---'-----------'--
0.1 --'-- -'--' --'------------'------------' --'------------' --' --'--
n ns
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)
■ Runoff

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 7
Hydrograph for Subcatchment 3: EX BYP3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.09
0.00
0.00
5.00
0.21
0.00
0.00
7.50
0.36
0.00
0.00
10.00
0.60
0.00
0.00
12.50
2.45
0.28
0.10
15.00
2.85
0.44
0.04
17.50
3.05
0.53
0.02
20.00
3.18
0.59
0.02
22.50
3.28
0.64
0.02
25.00
3.34
0.67
0.00
27.50
3.34
0.67
0.00
30.00
3.34
0.67
0.00
32.50
3.34
0.67
0.00
35.00
3.34
0.67
0.00
37.50
3.34
0.67
0.00
40.00
3.34
0.67
0.00
42.50
3.34
0.67
0.00
45.00
3.34
0.67
0.00
47.50
3.34
0.67
0.00
50.00
3.34
0.67
0.00
52.50
3.34
0.67
0.00
55.00
3.34
0.67
0.00
57.50
3.34
0.67
0.00
60.00
3.34
0.67
0.00
62.50
3.34
0.67
0.00
65.00
3.34
0.67
0.00
67.50
3.34
0.67
0.00
70.00
3.34
0.67
0.00
72.50
3.34
0.67
0.00
75.00
3.34
0.67
0.00
77.50
3.34
0.67
0.00
80.00
3.34
0.67
0.00
82.50
3.34
0.67
0.00
85.00
3.34
0.67
0.00
87.50
3.34
0.67
0.00
90.00
3.34
0.67
0.00
92.50
3.34
0.67
0.00
95.00
3.34
0.67
0.00
97.50
3.34
0.67
0.00
100.00
3.34
0.67
0.00
102.50
3.34
0.67
0.00
105.00
3.34
0.67
0.00
107.50
3.34
0.67
0.00
110.00
3.34
0.67
0.00
112.50
3.34
0.67
0.00
115.00
3.34
0.67
0.00
117.50
3.34
0.67
0.00
120.00
3.34
0.67
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 8
Summary for Subcatchment 4: EX BYP5
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.48 cfs @ 11.98 hrs, Volume= 0.025 af, Depth= 0.67"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 2-YR Rainfall=3.34"
Area (ac) CN
Adj
Description
0.100 98
Unconnected pavement, HSG B
0.340 61
>75% Grass cover, Good, HSG B
0.440 69
65
Weighted Average, UI Adjusted
0.340
77.27% Pervious Area
0.100
22.73% Impervious Area
0.100
100.00% Unconnected
Tc Length
Slope
Velocity Capacity Description
(min) (feet)
(ft/ft)
(ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 4: EX BYP5
Hydrograph
r--r--r--r--Ir--r--r- -r- -i --I- r--r- -r- -i --r I- r--T--r-
-i -
0.5 0.48 cfs
--- - ------ - --------N=24-hr
0.45
-- --
-rt--r--r--'I -- ----Y--r-----'I-- --2-YR-Raiwfa11=;3,34"-
0.4
-- - -- - -- -- -- - LinbffA_ te-0 440 ad_
0.35
-- - --+-- --' -- -- -- --' ---Ljnff!VQlmje- 0.02 -i-f-
w 0.3 1
I I I I I Rul6off IDepth�0.671
---
o 0.25 tic-65.0 Mi11
FL
0.2 Ut A''d1psteo PN=65
LL
--r--I--y--�--t--r--r--I--y--rt--+--r--I---I--�--t--r--r-
0.15
0.1
0.05
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)
❑ Runoff

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 9
Hydrograph for Subcatchment 4: EX BYP5
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.09
0.00
0.00
5.00
0.21
0.00
0.00
7.50
0.36
0.00
0.00
10.00
0.60
0.00
0.00
12.50
2.45
0.28
0.06
15.00
2.85
0.44
0.02
17.50
3.05
0.53
0.01
20.00
3.18
0.59
0.01
22.50
3.28
0.64
0.01
25.00
3.34
0.67
0.00
27.50
3.34
0.67
0.00
30.00
3.34
0.67
0.00
32.50
3.34
0.67
0.00
35.00
3.34
0.67
0.00
37.50
3.34
0.67
0.00
40.00
3.34
0.67
0.00
42.50
3.34
0.67
0.00
45.00
3.34
0.67
0.00
47.50
3.34
0.67
0.00
50.00
3.34
0.67
0.00
52.50
3.34
0.67
0.00
55.00
3.34
0.67
0.00
57.50
3.34
0.67
0.00
60.00
3.34
0.67
0.00
62.50
3.34
0.67
0.00
65.00
3.34
0.67
0.00
67.50
3.34
0.67
0.00
70.00
3.34
0.67
0.00
72.50
3.34
0.67
0.00
75.00
3.34
0.67
0.00
77.50
3.34
0.67
0.00
80.00
3.34
0.67
0.00
82.50
3.34
0.67
0.00
85.00
3.34
0.67
0.00
87.50
3.34
0.67
0.00
90.00
3.34
0.67
0.00
92.50
3.34
0.67
0.00
95.00
3.34
0.67
0.00
97.50
3.34
0.67
0.00
100.00
3.34
0.67
0.00
102.50
3.34
0.67
0.00
105.00
3.34
0.67
0.00
107.50
3.34
0.67
0.00
110.00
3.34
0.67
0.00
112.50
3.34
0.67
0.00
115.00
3.34
0.67
0.00
117.50
3.34
0.67
0.00
120.00
3.34
0.67
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 10
Summary for Subcatchment 5: EX BMP6
[49] Hint: Tc<2dt may require smaller dt
Runoff = 8.09 cfs @ 11.97 hrs, Volume= 0.384 af, Depth= 0.96"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 2-YR Rainfall=3.34"
Area (ac) CN
Adj
Description
0.800 98
Unconnected pavement, HSG B
3.980 69
50-75% Grass cover, Fair, HSG B
4.780 74
71
Weighted Average, UI Adjusted
3.980
83.26% Pervious Area
0.800
16.74% Impervious Area
0.800
100.00% Unconnected
Tc Length
Slope
Velocity Capacity Description
(min) (feet)
(ft/ft)
(ft/sec) (cfs)
5.0
Direct Entry,
N
3
0
LL
Subcatchment 5: EX BMP6
Hydrograph
--9cfs
—
—r
_.I2 _--hA_V1�I
TypeuI1
_'(^L
_-\�-I _�---LI
__-_-L,'III
1Y1I _-_-_-_-LYLIJ7JI 1rt1I __-_- 1+1I __--_-L,Y,I1
=-Ra1nfaCT3:34',,
- Y
------IIIII -_--_-------
--II —8.-0
O_1I
}^, T�
7I
tn4fVQ1Ljmq=�0-$04-Of -
-LRRunoff
lDepthT0.961
T—'5.0 tnih
- 11--
--'1--
--1--
-1 U1-AldiVsteO-PN=7111-
--'I-- -- -------------1---1--I--I--'I------'I-- -- -- --' --------'I--
—1--L--1--L--1---1---1--J--1-- L L--L--1---1--J--1--L--L--1---1---1--
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)
■ Runoff

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 11
Hydrograph for Subcatchment 5: EX BMP6
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.09
0.00
0.00
5.00
0.21
0.00
0.00
7.50
0.36
0.00
0.00
10.00
0.60
0.00
0.00
12.50
2.45
0.47
0.82
15.00
2.85
0.68
0.27
17.50
3.05
0.79
0.18
20.00
3.18
0.87
0.13
22.50
3.28
0.93
0.12
25.00
3.34
0.96
0.00
27.50
3.34
0.96
0.00
30.00
3.34
0.96
0.00
32.50
3.34
0.96
0.00
35.00
3.34
0.96
0.00
37.50
3.34
0.96
0.00
40.00
3.34
0.96
0.00
42.50
3.34
0.96
0.00
45.00
3.34
0.96
0.00
47.50
3.34
0.96
0.00
50.00
3.34
0.96
0.00
52.50
3.34
0.96
0.00
55.00
3.34
0.96
0.00
57.50
3.34
0.96
0.00
60.00
3.34
0.96
0.00
62.50
3.34
0.96
0.00
65.00
3.34
0.96
0.00
67.50
3.34
0.96
0.00
70.00
3.34
0.96
0.00
72.50
3.34
0.96
0.00
75.00
3.34
0.96
0.00
77.50
3.34
0.96
0.00
80.00
3.34
0.96
0.00
82.50
3.34
0.96
0.00
85.00
3.34
0.96
0.00
87.50
3.34
0.96
0.00
90.00
3.34
0.96
0.00
92.50
3.34
0.96
0.00
95.00
3.34
0.96
0.00
97.50
3.34
0.96
0.00
100.00
3.34
0.96
0.00
102.50
3.34
0.96
0.00
105.00
3.34
0.96
0.00
107.50
3.34
0.96
0.00
110.00
3.34
0.96
0.00
112.50
3.34
0.96
0.00
115.00
3.34
0.96
0.00
117.50
3.34
0.96
0.00
120.00
3.34
0.96
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 12
Summary for Subcatchment 6: EX BYP8
[49] Hint: Tc<2dt may require smaller dt
Runoff = 1.39 cfs @ 11.98 hrs, Volume= 0.078 af, Depth= 0.50"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 2-YR Rainfall=3.34"
Area (ac) CN Description
1.860 61 >75% Grass cover, Good, HSG B
1.860 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 6: EX BYP8
Hydrograph
� � �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I � �I �I �I �I ❑Runoff
1.39 cfs
lTYpe I( 24-Il'r
2-YR Rainfall-3.34''
'Runbff Area='1.860 ad
- ---- -- ------------ - -- -- --------- -- -- ------------
1 RL;nOff',VQIL;m'e=0.$7$ clf
Runoff �DepthT0.50P'
TcT5.0 Mid
CAN=61
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 13
Hydrograph for Subcatchment 6: EX BYP8
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.09
0.00
0.00
5.00
0.21
0.00
0.00
7.50
0.36
0.00
0.00
10.00
0.60
0.00
0.00
12.50
2.45
0.18
0.18
15.00
2.85
0.31
0.07
17.50
3.05
0.38
0.05
20.00
3.18
0.44
0.03
22.50
3.28
0.48
0.03
25.00
3.34
0.50
0.00
27.50
3.34
0.50
0.00
30.00
3.34
0.50
0.00
32.50
3.34
0.50
0.00
35.00
3.34
0.50
0.00
37.50
3.34
0.50
0.00
40.00
3.34
0.50
0.00
42.50
3.34
0.50
0.00
45.00
3.34
0.50
0.00
47.50
3.34
0.50
0.00
50.00
3.34
0.50
0.00
52.50
3.34
0.50
0.00
55.00
3.34
0.50
0.00
57.50
3.34
0.50
0.00
60.00
3.34
0.50
0.00
62.50
3.34
0.50
0.00
65.00
3.34
0.50
0.00
67.50
3.34
0.50
0.00
70.00
3.34
0.50
0.00
72.50
3.34
0.50
0.00
75.00
3.34
0.50
0.00
77.50
3.34
0.50
0.00
80.00
3.34
0.50
0.00
82.50
3.34
0.50
0.00
85.00
3.34
0.50
0.00
87.50
3.34
0.50
0.00
90.00
3.34
0.50
0.00
92.50
3.34
0.50
0.00
95.00
3.34
0.50
0.00
97.50
3.34
0.50
0.00
100.00
3.34
0.50
0.00
102.50
3.34
0.50
0.00
105.00
3.34
0.50
0.00
107.50
3.34
0.50
0.00
110.00
3.34
0.50
0.00
112.50
3.34
0.50
0.00
115.00
3.34
0.50
0.00
117.50
3.34
0.50
0.00
120.00
3.34
0.50
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 14
Summary for Subcatchment 8: EX BYP6
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.03 cfs @ 11.98 hrs, Volume= 0.002 af, Depth= 0.50"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 2-YR Rainfall=3.34"
Area (ac) CN Description
0.040 61 >75% Grass cover, Good, HSG B
0.040 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 8: EX BYP6
Hydrograph
0.032 ■Runoff
0.03 cfs+__+__r----7--7--t__r----__+__r---------t--r-------+__+__
0.03
0.028
- --- - - -- 2--YR�IRain a'IC#3.34"--
0.026
- -- -- ---- -- --------- -- ---------7 -p-�y,----/�--^-�-ry--yam--
0.024-+--+-- --'----+--+--'---'-----+--RUn6ff Atea-II.040-at,-
�I I I I I I I I I I I I I I I I I I I I I I I
0.022 -'- - _
Aunpff
0.02
^ — —I— — —
w0.018- Runoff_ Depth;0 50'' -
3
0.016
0 -'- -
----------------------------------------------C�5.-0Ibth-
LL I
0.014
0.012
0.01
--'-- --'--'---'---'---'---'--'---'---'---'--'---'---'---'---'--'---'---'---'---'--'---
0.008
0.006
0.004
0.002 LL I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 15
Hydrograph for Subcatchment 8: EX BYP6
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.09
0.00
0.00
5.00
0.21
0.00
0.00
7.50
0.36
0.00
0.00
10.00
0.60
0.00
0.00
12.50
2.45
0.18
0.00
15.00
2.85
0.31
0.00
17.50
3.05
0.38
0.00
20.00
3.18
0.44
0.00
22.50
3.28
0.48
0.00
25.00
3.34
0.50
0.00
27.50
3.34
0.50
0.00
30.00
3.34
0.50
0.00
32.50
3.34
0.50
0.00
35.00
3.34
0.50
0.00
37.50
3.34
0.50
0.00
40.00
3.34
0.50
0.00
42.50
3.34
0.50
0.00
45.00
3.34
0.50
0.00
47.50
3.34
0.50
0.00
50.00
3.34
0.50
0.00
52.50
3.34
0.50
0.00
55.00
3.34
0.50
0.00
57.50
3.34
0.50
0.00
60.00
3.34
0.50
0.00
62.50
3.34
0.50
0.00
65.00
3.34
0.50
0.00
67.50
3.34
0.50
0.00
70.00
3.34
0.50
0.00
72.50
3.34
0.50
0.00
75.00
3.34
0.50
0.00
77.50
3.34
0.50
0.00
80.00
3.34
0.50
0.00
82.50
3.34
0.50
0.00
85.00
3.34
0.50
0.00
87.50
3.34
0.50
0.00
90.00
3.34
0.50
0.00
92.50
3.34
0.50
0.00
95.00
3.34
0.50
0.00
97.50
3.34
0.50
0.00
100.00
3.34
0.50
0.00
102.50
3.34
0.50
0.00
105.00
3.34
0.50
0.00
107.50
3.34
0.50
0.00
110.00
3.34
0.50
0.00
112.50
3.34
0.50
0.00
115.00
3.34
0.50
0.00
117.50
3.34
0.50
0.00
120.00
3.34
0.50
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 16
Summary for Subcatchment 10: BYP1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.50 cfs @ 11.95 hrs, Volume= 0.024 af, Depth= 2.21"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 2-YR Rainfall=3.34"
Area (ac) CN
Description
0.100 98
Paved parking, HSG B
0.030 61
>75% Grass cover, Good, HSG B
0.130 89
Weighted Average
0.030
23.08% Pervious Area
0.100
76.92% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 10: BYP1
Hydrograph
0.55
cfs_________________________�__�__�___�___�__�__�__�__�__
0.5
-- -- Y�/,pe II',2 -hr
0.45 2-YR' Rainfai11�3.34"
-7- -r--r--r--r--r-r--r--t--r--r----r--r--r-----I-----r--t--r--r-
0.4 RUnbff Aeei�=0.130 ad
0.35 Rpnpff'Vp1L;Mq=0.024 cif
---- -r--r--r--r--r-r--r--r--r--r----r--r--r--r-----
--r--r--r--r-
0.3
Runoff Depth=2.21�'
3 --'---J--L--L--L--1--J--L--L--L--'---'--�--L--L--'---'---'--L--L--L--'--
T'cy5.10 rrih
L 0.25 T
--r--r--r--r--r--r-r--r--r--r--r--r-r--r--r--r--r--i--r-�r
0.2 N=8$-
— —'— — L — — L — — L — — L — —'— — L — — — — L — — L-
0.15
---- --i-- --r------- --- -- --r--------- -- r--------------r----
0.1
-
-�-- J--L--L--L--1--J--L--L--L--L--�--�--L--L--�---�---�--L--L--L--i--
0.05
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)
■ Runoff

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 17
Hydrograph for Subcatchment 10: BYP1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.09
0.00
0.00
5.00
0.21
0.00
0.00
7.50
0.36
0.01
0.00
10.00
0.60
0.08
0.01
12.50
2.45
1.42
0.04
15.00
2.85
1.77
0.01
17.50
3.05
1.94
0.01
20.00
3.18
2.06
0.01
22.50
3.28
2.16
0.00
25.00
3.34
2.21
0.00
27.50
3.34
2.21
0.00
30.00
3.34
2.21
0.00
32.50
3.34
2.21
0.00
35.00
3.34
2.21
0.00
37.50
3.34
2.21
0.00
40.00
3.34
2.21
0.00
42.50
3.34
2.21
0.00
45.00
3.34
2.21
0.00
47.50
3.34
2.21
0.00
50.00
3.34
2.21
0.00
52.50
3.34
2.21
0.00
55.00
3.34
2.21
0.00
57.50
3.34
2.21
0.00
60.00
3.34
2.21
0.00
62.50
3.34
2.21
0.00
65.00
3.34
2.21
0.00
67.50
3.34
2.21
0.00
70.00
3.34
2.21
0.00
72.50
3.34
2.21
0.00
75.00
3.34
2.21
0.00
77.50
3.34
2.21
0.00
80.00
3.34
2.21
0.00
82.50
3.34
2.21
0.00
85.00
3.34
2.21
0.00
87.50
3.34
2.21
0.00
90.00
3.34
2.21
0.00
92.50
3.34
2.21
0.00
95.00
3.34
2.21
0.00
97.50
3.34
2.21
0.00
100.00
3.34
2.21
0.00
102.50
3.34
2.21
0.00
105.00
3.34
2.21
0.00
107.50
3.34
2.21
0.00
110.00
3.34
2.21
0.00
112.50
3.34
2.21
0.00
115.00
3.34
2.21
0.00
117.50
3.34
2.21
0.00
120.00
3.34
2.21
0.00

Granite Quarry Type 11 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 18
Summary for Subcatchment 11: BMP3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 4.16 cfs @ 11.96 hrs, Volume= 0.195 af, Depth= 1.07"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 2-YR Rainfall=3.34"
Area (ac) CN
Description
0.690 98
Unconnected roofs, HSG B
1.490 61
>75% Grass cover, Good, HSG B
2.180 73
Weighted Average
1.490
68.35% Pervious Area
0.690
31.65% Impervious Area
0.690
100.00% Unconnected
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 11: BMP3
Hydrograph
� � �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I ❑Runoff
4.16 cfs
4 ype 1I 2— —hr
2-YR RainfaillT3.34"
--'Rwn-6ff - eA -2,1'30-a d-
3 RLjnpff'VQILjm'e=',0.19 f
Runoff DepthT1.p71'
LL -cTS
2
,tY-rni-
PN=73
1 I I I I I I I I I I I I I I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 19
Hydrograph for Subcatchment 11: BMP3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.09
0.00
0.00
5.00
0.21
0.00
0.00
7.50
0.36
0.00
0.00
10.00
0.60
0.00
0.00
12.50
2.45
0.54
0.41
15.00
2.85
0.77
0.13
17.50
3.05
0.89
0.09
20.00
3.18
0.97
0.06
22.50
3.28
1.04
0.06
25.00
3.34
1.07
0.00
27.50
3.34
1.07
0.00
30.00
3.34
1.07
0.00
32.50
3.34
1.07
0.00
35.00
3.34
1.07
0.00
37.50
3.34
1.07
0.00
40.00
3.34
1.07
0.00
42.50
3.34
1.07
0.00
45.00
3.34
1.07
0.00
47.50
3.34
1.07
0.00
50.00
3.34
1.07
0.00
52.50
3.34
1.07
0.00
55.00
3.34
1.07
0.00
57.50
3.34
1.07
0.00
60.00
3.34
1.07
0.00
62.50
3.34
1.07
0.00
65.00
3.34
1.07
0.00
67.50
3.34
1.07
0.00
70.00
3.34
1.07
0.00
72.50
3.34
1.07
0.00
75.00
3.34
1.07
0.00
77.50
3.34
1.07
0.00
80.00
3.34
1.07
0.00
82.50
3.34
1.07
0.00
85.00
3.34
1.07
0.00
87.50
3.34
1.07
0.00
90.00
3.34
1.07
0.00
92.50
3.34
1.07
0.00
95.00
3.34
1.07
0.00
97.50
3.34
1.07
0.00
100.00
3.34
1.07
0.00
102.50
3.34
1.07
0.00
105.00
3.34
1.07
0.00
107.50
3.34
1.07
0.00
110.00
3.34
1.07
0.00
112.50
3.34
1.07
0.00
115.00
3.34
1.07
0.00
117.50
3.34
1.07
0.00
120.00
3.34
1.07
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 20
Summary for Subcatchment 12: BYP3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 2.18 cfs @ 11.96 hrs, Volume= 0.102 af, Depth= 1.88"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 2-YR Rainfall=3.34"
Area (ac) CN
Description
0.420 98
Unconnected pavement, HSG B
0.230 61
>75% Grass cover, Good, HSG B
0.650 85
Weighted Average
0.230
35.38% Pervious Area
0.420
64.62% Impervious Area
0.420
100.00% Unconnected
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 12: BYP3
Hydrograph
I I II II II II II II II II II II II II II II II II II II II II II ❑Runoff
2.18 cfs
-- -- -1 T--! - ---T-- T --T -- TTypeal', 24-'r-
2 �2-YR RainfaillT3.34"
Rwnbff Area=0.650 ac
RLjnpff'IVQ1Ljme='10.10 Of
k6noff lDept'hT1.8811'
0 - - I -- -- -- - - -I -- -- - T-Tcz &&a111M
1 I I I I I I I I I I I I I I I I I
PN=85
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 21
Hydrograph for Subcatchment 12: BYP3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.09
0.00
0.00
5.00
0.21
0.00
0.00
7.50
0.36
0.00
0.00
10.00
0.60
0.03
0.02
12.50
2.45
1.14
0.18
15.00
2.85
1.46
0.06
17.50
3.05
1.63
0.04
20.00
3.18
1.74
0.02
22.50
3.28
1.83
0.02
25.00
3.34
1.88
0.00
27.50
3.34
1.88
0.00
30.00
3.34
1.88
0.00
32.50
3.34
1.88
0.00
35.00
3.34
1.88
0.00
37.50
3.34
1.88
0.00
40.00
3.34
1.88
0.00
42.50
3.34
1.88
0.00
45.00
3.34
1.88
0.00
47.50
3.34
1.88
0.00
50.00
3.34
1.88
0.00
52.50
3.34
1.88
0.00
55.00
3.34
1.88
0.00
57.50
3.34
1.88
0.00
60.00
3.34
1.88
0.00
62.50
3.34
1.88
0.00
65.00
3.34
1.88
0.00
67.50
3.34
1.88
0.00
70.00
3.34
1.88
0.00
72.50
3.34
1.88
0.00
75.00
3.34
1.88
0.00
77.50
3.34
1.88
0.00
80.00
3.34
1.88
0.00
82.50
3.34
1.88
0.00
85.00
3.34
1.88
0.00
87.50
3.34
1.88
0.00
90.00
3.34
1.88
0.00
92.50
3.34
1.88
0.00
95.00
3.34
1.88
0.00
97.50
3.34
1.88
0.00
100.00
3.34
1.88
0.00
102.50
3.34
1.88
0.00
105.00
3.34
1.88
0.00
107.50
3.34
1.88
0.00
110.00
3.34
1.88
0.00
112.50
3.34
1.88
0.00
115.00
3.34
1.88
0.00
117.50
3.34
1.88
0.00
120.00
3.34
1.88
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 22
Summary for Subcatchment 13: BYP5
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.57 cfs @ 11.96 hrs, Volume= 0.027 af, Depth= 1.07"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 2-YR Rainfall=3.34"
Area (ac) CN
Description
0.100 98
Unconnected pavement, HSG B
0.200 61
>75% Grass cover, Good, HSG B
0.300 73
Weighted Average
0.200
66.67% Pervious Area
0.100
33.33% Impervious Area
0.100
100.00% Unconnected
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 13: BYP5
Hydrograph
--1---1--J--1--L--L--'--L--�--L--L--'---'--�--L--L--'---'---'--�--L--L--'--
0.6 0.57 cfs
0.55 --� y��pM-11��2- —hr
— —'— — — L — — L — — L — — L — —'— — L — — — — L — — L — —'— — —'— — L — — L — — L — —'— — —'— — I— — L — — L — — L — -L —
0.5 ' I 2-YR' Rainfalll�3.341'
0.45 RUnbff' Aee�i=0.300 ad
0.4 Rpnpff V41L;mY=0•02j cif
0.35 _Rulna-f-f-IDepth=1.071'_
0.25 ww''
---- ----------------- ------------ --------------- -CN 73-
02
0.15
it --�-- -�-- � --�--�---�---�-- �-- �--�---�---�-- �-- � -- �--�---�---�-- �-- � -- � --�--
0.1
0.05
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)
❑ Runoff

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 23
Hydrograph for Subcatchment 13: BYP5
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.09
0.00
0.00
5.00
0.21
0.00
0.00
7.50
0.36
0.00
0.00
10.00
0.60
0.00
0.00
12.50
2.45
0.54
0.06
15.00
2.85
0.77
0.02
17.50
3.05
0.89
0.01
20.00
3.18
0.97
0.01
22.50
3.28
1.04
0.01
25.00
3.34
1.07
0.00
27.50
3.34
1.07
0.00
30.00
3.34
1.07
0.00
32.50
3.34
1.07
0.00
35.00
3.34
1.07
0.00
37.50
3.34
1.07
0.00
40.00
3.34
1.07
0.00
42.50
3.34
1.07
0.00
45.00
3.34
1.07
0.00
47.50
3.34
1.07
0.00
50.00
3.34
1.07
0.00
52.50
3.34
1.07
0.00
55.00
3.34
1.07
0.00
57.50
3.34
1.07
0.00
60.00
3.34
1.07
0.00
62.50
3.34
1.07
0.00
65.00
3.34
1.07
0.00
67.50
3.34
1.07
0.00
70.00
3.34
1.07
0.00
72.50
3.34
1.07
0.00
75.00
3.34
1.07
0.00
77.50
3.34
1.07
0.00
80.00
3.34
1.07
0.00
82.50
3.34
1.07
0.00
85.00
3.34
1.07
0.00
87.50
3.34
1.07
0.00
90.00
3.34
1.07
0.00
92.50
3.34
1.07
0.00
95.00
3.34
1.07
0.00
97.50
3.34
1.07
0.00
100.00
3.34
1.07
0.00
102.50
3.34
1.07
0.00
105.00
3.34
1.07
0.00
107.50
3.34
1.07
0.00
110.00
3.34
1.07
0.00
112.50
3.34
1.07
0.00
115.00
3.34
1.07
0.00
117.50
3.34
1.07
0.00
120.00
3.34
1.07
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 24
Summary for Subcatchment 14: BMP6
[49] Hint: Tc<2dt may require smaller dt
Runoff = 17.28 cfs @ 11.96 hrs, Volume= 0.799 af, Depth= 1.58"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 2-YR Rainfall=3.34"
Area (ac) CN Description
3.340 98 Impervious Areas, HSG B
2.730 61 >75% Grass cover, Good, HSG B
6.070 81 Weighted Average
2.730 44.98% Pervious Area
3.340 55.02% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 14: BMP6
Hydrograph
19----- - --i-- li -- li -- --i--------i-- li -- li -- li --i
18 -- 1728cfs
17
16 ----
1s Rai
-,-------------------------------R=rtifailCT3.4'--
14 --------;-- --------+Rainbff-Are=C.-07fla-
13 _4 m _
w 11 II --II - -II-- it-- it -- II -- II --Ii--Ii---II---II-- it -- it -- it ----- I � r-
'U 10 R
--- -- -- --------------- -- ----un©ff IDepth=1.58t1 --
a9 --i - -i-- li-- li-----------------i-- li -- li -- li-------------\iTJ.i lillf�--
8 ---- --- -- -- --------------- -- -- -----------------/(I-w-' -- --
7 -- -------- -- ---------------- -- -------------LN=��--
6 ---- --- -- --I
-------------------
5
-- ---- - - ---r
4--I-- —I-- -- I -- I I I I II I
I I I I
---------------------------------------------------
3 --- ---- -- -- ---- -- -- -- ---- -- -- - --
2 --------I--I------I--I----I--I --
1 I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 25
Hydrograph for Subcatchment 14: BMP6
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.09
0.00
0.00
5.00
0.21
0.00
0.00
7.50
0.36
0.00
0.00
10.00
0.60
0.01
0.08
12.50
2.45
0.91
1.50
15.00
2.85
1.20
0.47
17.50
3.05
1.35
0.31
20.00
3.18
1.45
0.21
22.50
3.28
1.53
0.19
25.00
3.34
1.58
0.00
27.50
3.34
1.58
0.00
30.00
3.34
1.58
0.00
32.50
3.34
1.58
0.00
35.00
3.34
1.58
0.00
37.50
3.34
1.58
0.00
40.00
3.34
1.58
0.00
42.50
3.34
1.58
0.00
45.00
3.34
1.58
0.00
47.50
3.34
1.58
0.00
50.00
3.34
1.58
0.00
52.50
3.34
1.58
0.00
55.00
3.34
1.58
0.00
57.50
3.34
1.58
0.00
60.00
3.34
1.58
0.00
62.50
3.34
1.58
0.00
65.00
3.34
1.58
0.00
67.50
3.34
1.58
0.00
70.00
3.34
1.58
0.00
72.50
3.34
1.58
0.00
75.00
3.34
1.58
0.00
77.50
3.34
1.58
0.00
80.00
3.34
1.58
0.00
82.50
3.34
1.58
0.00
85.00
3.34
1.58
0.00
87.50
3.34
1.58
0.00
90.00
3.34
1.58
0.00
92.50
3.34
1.58
0.00
95.00
3.34
1.58
0.00
97.50
3.34
1.58
0.00
100.00
3.34
1.58
0.00
102.50
3.34
1.58
0.00
105.00
3.34
1.58
0.00
107.50
3.34
1.58
0.00
110.00
3.34
1.58
0.00
112.50
3.34
1.58
0.00
115.00
3.34
1.58
0.00
117.50
3.34
1.58
0.00
120.00
3.34
1.58
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 26
Summary for Subcatchment 15: BYP8
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.25 cfs @ 11.98 hrs, Volume= 0.014 af, Depth= 0.50"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 2-YR Rainfall=3.34"
Area (ac) CN Description
0.330 61 >75% Grass cover, Good, HSG B
0.330 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 15: BYP8
Hydrograph
0.26 0.25 cfs
0.24 ej
i it i
0.22 1-YR Rainfalll:;3.341'
0.2 '
0.18
0.16
w - ---+--+--+--+----+--+--+--+----- --+--Ru'nOfVDePfh=*-.50"-
0 --r - ---r--r-- --r- -- --+-- --r --i---
-r- -r - -r --r li\iT�.V lill�ll
a 0.12
---- ---- ------------------------ -- ------------ - - - -- ----
0.1 C N=6 1
-- -- +-- -- -- +-- i -- -- +-- -- --
0.08
0.06
--+— +--+--+--+--+—+--+--+--+--+----+--+--+-----+—+--+--+--+--+-
0.04
--I-- r-- T-- r-- r----r-- r-- T--r--I---I--r--T--T--I---I---I-- r-- T-- r--I--
0.02
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)
■ Runoff

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 27
Hydrograph for Subcatchment 15: BYP8
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.09
0.00
0.00
5.00
0.21
0.00
0.00
7.50
0.36
0.00
0.00
10.00
0.60
0.00
0.00
12.50
2.45
0.18
0.03
15.00
2.85
0.31
0.01
17.50
3.05
0.38
0.01
20.00
3.18
0.44
0.01
22.50
3.28
0.48
0.01
25.00
3.34
0.50
0.00
27.50
3.34
0.50
0.00
30.00
3.34
0.50
0.00
32.50
3.34
0.50
0.00
35.00
3.34
0.50
0.00
37.50
3.34
0.50
0.00
40.00
3.34
0.50
0.00
42.50
3.34
0.50
0.00
45.00
3.34
0.50
0.00
47.50
3.34
0.50
0.00
50.00
3.34
0.50
0.00
52.50
3.34
0.50
0.00
55.00
3.34
0.50
0.00
57.50
3.34
0.50
0.00
60.00
3.34
0.50
0.00
62.50
3.34
0.50
0.00
65.00
3.34
0.50
0.00
67.50
3.34
0.50
0.00
70.00
3.34
0.50
0.00
72.50
3.34
0.50
0.00
75.00
3.34
0.50
0.00
77.50
3.34
0.50
0.00
80.00
3.34
0.50
0.00
82.50
3.34
0.50
0.00
85.00
3.34
0.50
0.00
87.50
3.34
0.50
0.00
90.00
3.34
0.50
0.00
92.50
3.34
0.50
0.00
95.00
3.34
0.50
0.00
97.50
3.34
0.50
0.00
100.00
3.34
0.50
0.00
102.50
3.34
0.50
0.00
105.00
3.34
0.50
0.00
107.50
3.34
0.50
0.00
110.00
3.34
0.50
0.00
112.50
3.34
0.50
0.00
115.00
3.34
0.50
0.00
117.50
3.34
0.50
0.00
120.00
3.34
0.50
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 28
Summary for Subcatchment 18: BYP6
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.03 cfs @ 11.98 hrs, Volume= 0.002 af, Depth= 0.50"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 2-YR Rainfall=3.34"
Area (ac) CN Description
0.040 61 >75% Grass cover, Good, HSG B
0.040 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 18: BYP6
Hydrograph
0.032 ■Runoff
0.03 cfs+__+__r----7--7--t__r----__+__r---------t--r-------+__+__
0.03
0.028
- --- - - -- 2--YR�IRain a'IC#3.34"--
0.026
- -- -- ---- -- --------- -- ---------7 -p-�y,----/�--^-�-ry--yam--
0.024-+--+-- --'----+--+--'---'-----+--RUn6ff Atea-II.040-at,-
�I I I I I I I I I I I I I I I I I I I I I I I
0.022 -'- - _
Aunpff
0.02
^ — —I— — —
w0.018- Runoff_ Depth;0 50'' -
3
0.016
0 -'- -
----------------------------------------------C�5.-0Ibth-
LL I
0.014
0.012
0.01
--'-- --'--'---'---'---'---'--'---'---'---'--'---'---'---'---'--'---'---'---'---'--'---
0.008
0.006
0.004
0.002 LL I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 29
Hydrograph for Subcatchment 18: BYP6
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.09
0.00
0.00
5.00
0.21
0.00
0.00
7.50
0.36
0.00
0.00
10.00
0.60
0.00
0.00
12.50
2.45
0.18
0.00
15.00
2.85
0.31
0.00
17.50
3.05
0.38
0.00
20.00
3.18
0.44
0.00
22.50
3.28
0.48
0.00
25.00
3.34
0.50
0.00
27.50
3.34
0.50
0.00
30.00
3.34
0.50
0.00
32.50
3.34
0.50
0.00
35.00
3.34
0.50
0.00
37.50
3.34
0.50
0.00
40.00
3.34
0.50
0.00
42.50
3.34
0.50
0.00
45.00
3.34
0.50
0.00
47.50
3.34
0.50
0.00
50.00
3.34
0.50
0.00
52.50
3.34
0.50
0.00
55.00
3.34
0.50
0.00
57.50
3.34
0.50
0.00
60.00
3.34
0.50
0.00
62.50
3.34
0.50
0.00
65.00
3.34
0.50
0.00
67.50
3.34
0.50
0.00
70.00
3.34
0.50
0.00
72.50
3.34
0.50
0.00
75.00
3.34
0.50
0.00
77.50
3.34
0.50
0.00
80.00
3.34
0.50
0.00
82.50
3.34
0.50
0.00
85.00
3.34
0.50
0.00
87.50
3.34
0.50
0.00
90.00
3.34
0.50
0.00
92.50
3.34
0.50
0.00
95.00
3.34
0.50
0.00
97.50
3.34
0.50
0.00
100.00
3.34
0.50
0.00
102.50
3.34
0.50
0.00
105.00
3.34
0.50
0.00
107.50
3.34
0.50
0.00
110.00
3.34
0.50
0.00
112.50
3.34
0.50
0.00
115.00
3.34
0.50
0.00
117.50
3.34
0.50
0.00
120.00
3.34
0.50
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 30
Summary for Pond 7: EX BMP6 - Dry Pond
Inflow Area = 4.780 ac, 16.74% Impervious, Inflow Depth = 0.96" for 2-YR event
Inflow = 8.09 cfs @ 11.97 hrs, Volume= 0.384 of
Outflow = 2.89 cfs @ 12.09 hrs, Volume= 0.384 af, Atten= 64%, Lag= 7.2 min
Primary = 2.89 cfs @ 12.09 hrs, Volume= 0.384 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 753.82' @ 12.09 hrs Surf.Area= 8,164 sf Storage= 4,453 cf
Plug -Flow detention time= 52.6 min calculated for 0.384 of (100% of inflow)
Center -of -Mass det. time= 52.1 min ( 917.1 - 865.0 )
Volume Invert
#1 753.00'
UM11.1ire
Description
65,286 cf Ex Volume - Design (Pyramidal)-isted below (Recalc)
Elevation
Surf.Area
Inc.Store Cum.Store Wet.Area
(feet)
(sq-ft)
(cubic -feet) (cubic -feet) (sq-ft)
753.00
3,100
0 0 3,100
754.00
9,600
6,052 6,052 9,607
756.00
12,700
22,228 28,280 12,820
758.00
16,100
28,733 57,012 16,352
758.50
17,000
8,274 65,286 17,288
Device Routing
Invert
Outlet Devices
#1 Primary
753.00'
24.0" Round RCP -Round 24"
L= 53.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 753.00' / 752.71' S= 0.0055'/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 3.14 sf
#2 Primary
754.00'
1.8" Vert. Orifice/Grate C= 0.600
#3 Primary
755.20'
13.3' long Sharp -Crested Rectangular Weir End Contraction(s)
Primary OutFlow Max=2.87 cfs @ 12.09 hrs HW=753.82' TW=0.00' (Dynamic Tailwater)
1=RCP_Round 24" (Barrel Controls 2.87 cfs @ 3.52 fps)
2=Orifice/Grate ( Controls 0.00 cfs)
3=Sharp-Crested Rectangular Weir( Controls 0.00 cfs)

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 31
Pond 7: EX BMP6 - Dry Pond
Hyd rog raph
I I I I I I I I I I I I I I I I I I I I 1
■ Inflow
9 8.0sofs +-- --1-- --+-- --1-- --+-- --1-- --+-- --1-- --+----1---1--+-- ❑ Primary
,
I Ill,nflow 111Airea=*:117W0 lllac
7 Peak F-IeV=753.0g'
,
,
,1
1---- -1--L--1--J--1--L--1--J--1--L--1--J--1--L--1--J--1--L--1---1--1--
6-
Storage
c'f
,1
w 5
U
,
�1 --j --1-- �1-- j __ j --j --1-- �1 --j --1-- �1-- �1 --j --j --1--
3 I I I I I I I I I I I I I I I I I I I I I I
p
a 4
2.8s 1
3 1 I cfs I I I I I I I I I I I I I I I I I I I I 1
--1 —T--T --I--T--T--T--I--T--T--T--I--T--T--T--I-- T--T--T-----I-- T--
2
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 32
Hydrograph for Pond 7: EX BMP6 - Dry Pond
Time
Inflow
Storage
Elevation
Primary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
0.00
0.00
0
753.00
0.00
2.50
0.00
0
753.00
0.00
5.00
0.00
0
753.00
0.00
7.50
0.00
0
753.00
0.00
10.00
0.00
0
753.00
0.00
12.50
0.82
2,920
753.61
1.69
15.00
0.27
966
753.26
0.31
17.50
0.18
743
753.21
0.20
20.00
0.13
623
753.18
0.14
22.50
0.12
567
753.16
0.12
25.00
0.00
325
753.10
0.04
27.50
0.00
153
753.05
0.01
30.00
0.00
102
753.03
0.00
32.50
0.00
77
753.02
0.00
35.00
0.00
62
753.02
0.00
37.50
0.00
52
753.02
0.00
40.00
0.00
45
753.01
0.00
42.50
0.00
40
753.01
0.00
45.00
0.00
36
753.01
0.00
47.50
0.00
32
753.01
0.00
50.00
0.00
30
753.01
0.00
52.50
0.00
28
753.01
0.00
55.00
0.00
26
753.01
0.00
57.50
0.00
24
753.01
0.00
60.00
0.00
23
753.01
0.00
62.50
0.00
21
753.01
0.00
65.00
0.00
20
753.01
0.00
67.50
0.00
19
753.01
0.00
70.00
0.00
18
753.01
0.00
72.50
0.00
17
753.01
0.00
75.00
0.00
17
753.01
0.00
77.50
0.00
16
753.01
0.00
80.00
0.00
15
753.00
0.00
82.50
0.00
15
753.00
0.00
85.00
0.00
14
753.00
0.00
87.50
0.00
14
753.00
0.00
90.00
0.00
13
753.00
0.00
92.50
0.00
13
753.00
0.00
95.00
0.00
13
753.00
0.00
97.50
0.00
12
753.00
0.00
100.00
0.00
12
753.00
0.00
102.50
0.00
12
753.00
0.00
105.00
0.00
11
753.00
0.00
107.50
0.00
11
753.00
0.00
110.00
0.00
11
753.00
0.00
112.50
0.00
10
753.00
0.00
115.00
0.00
10
753.00
0.00
117.50
0.00
10
753.00
0.00
120.00
0.00
10
753.00
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 33
Stage -Area -Storage for Pond 7: EX BMP6 - Dry Pond
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
753.00
3,100
0
753.10
3,589
334
753.20
4,114
719
753.30
4,674
1,158
753.40
5,271
1,655
753.50
5,903
2,213
753.60
6,571
2,837
753.70
7,274
3,529
753.80
8,014
4,293
753.90
8,789
5,133
754.00
9,600
6,052
754.10
9,745
7,019
754.20
9,891
8,001
754.30
10,037
8,997
754.40
10,185
10,008
754.50
10,334
11,034
754.60
10,485
12,075
754.70
10,636
13,131
754.80
10,788
14,202
754.90
10,941
15,289
755.00
11,096
16,391
755.10
11,251
17,508
755.20
11,408
18,641
755.30
11,566
19,790
755.40
11,725
20,954
755.50
11,884
22,135
755.60
12,045
23,331
755.70
12,207
24,544
755.80
12,371
25,773
755.90
12,535
27,018
756.00
12,700
28,280
756.10
12,860
29,558
756.20
13,022
30,852
756.30
13,184
32,162
756.40
13,348
33,489
756.50
13,512
34,832
756.60
13,678
36,191
756.70
13,844
37,567
756.80
14,012
38,960
756.90
14,180
40,370
757.00
14,350
41,796
757.10
14,520
43,239
757.20
14,692
44,700
757.30
14,864
46,178
757.40
15,038
47,673
757.50
15,212
49,185
757.60
15,388
50,715
757.70
15,564
52,263
757.80
15,742
53,828
757.90
15,920
55,411
758.00
16,100
57,012
758.10
16,278
58,631
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
758.20
16,457
60,268
758.30
16,637
61,923
758.40
16,818
63,596
758.50
17,000
65,286

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 34
Summary for Pond 16: Prop Modified BMP 6 - Wet Pond
Inflow Area = 6.070 ac, 55.02% Impervious, Inflow Depth = 1.58" for 2-YR event
Inflow = 17.28 cfs @ 11.96 hrs, Volume= 0.799 of
Outflow = 0.71 cfs @ 13.56 hrs, Volume= 0.765 af, Atten= 96%, Lag= 96.1 min
Primary = 0.71 cfs @ 13.56 hrs, Volume= 0.765 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 755.86' @ 13.56 hrs Surf.Area= 12,852 sf Storage= 20,730 cf
Plug -Flow detention time= 1,586.6 min calculated for 0.765 of (96% of inflow)
Center -of -Mass det. time= 1,562.2 min (2,395.5 - 833.2 )
Volume Invert Avail.Storaae Storaae Description
#1
754.00'
68,712 cf Temporary Pool (Pyramidal)-isted below (Recalc)
Elevation
Surf.Area
Inc.Store
Cum.Store
Wet.Area
(feet)
(sq-ft)
(cubic -feet)
(cubic -feet)
(sq-ft)
754.00
8,870
0
0
8,870
755.00
11,632
10,220
10,220
11,661
759.00
17,834
58,492
68,712
18,157
Device
Routing
Invert
Outlet Devices
#1
Primary
754.00'
18.0" Round RCP -Round 18"
L= 14.3' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 754.00' / 753.68' S= 0.0224'/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.77 sf
#2
Device 1
754.00'
1.5" Vert. Orifice/Grate C= 0.600
#3
Device 1
755.60'
18.0" W x 27.0" H Vert. Orifice/Grate C= 0.600
#4
Device 1
757.85'
16.0' long Sharp -Crested Rectangular Weir End Contraction(s)
Primary OutFlow Max=0.71 cfs @ 13.56 hrs HW=755.86' TW=0.00' (Dynamic Tailwater)
L1=RCP_Round 18" (Passes 0.71 cfs of 8.96 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.08 cfs @ 6.45 fps)
3=Orifice/Grate (Orifice Controls 0.63 cfs @ 1.63 fps)
4=Sharp-Crested Rectangular Weir( Controls 0.00 cfs)

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 35
Pond 16: Prop Modified BMP 6 - Wet Pond
Hyd rog raph
------'--
-----------------------'--
-----------------'--
■Inflow
19
18
17.28cfs
--'---1--L-----'--
I - 1---1--L--L-----'--
--L-----'--
--L
--
--L----J--
-a',n
L --------1--L--+--'--
lowAre;l6:A-
❑Primary
17
16
-- ---L-------
--I---+--r-----II--
--L-------
--*-----II--
--
--+--+--'I'Gll'�V�T
-- ----
-- --------- --L-- ----
15
14
-- -+--r-------+--r--+----+--+--+----+--+--+-------+--r--+--I--
--I---7--r--Ir--li--
--r--Ir--li--
-- r
-- Ir-
- IiStoraq�20,j / -cf
13
12
--I--—7--T---------T--II
----1--T--IF------7--IF-------7--T--Ir--II--
10
�I
I I
I I
I I
I
I I I I
I
I I I I I I I I I I
0 9
-T ----
--------------------------
-----------
------------------
LL
8
I
I I
I I
I I
I
I I I I
I
I I I I I I I I I I
7
6
5-
-- ---L-------
--L-------
--
-- ----
-- --------- --L-- ----
4
---L-------
--L-------
--
-- ----
--+--------- --L-- ----
3
--- +--+-------+--+-------+--+--+----+--+--+-------+--+--+----
2
n 71 ors
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 36
Hydrograph for Pond 16: Prop Modified BMP 6 - Wet Pond
Time
Inflow
Storage
Elevation
Primary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
0.00
0.00
0
754.00
0.00
2.50
0.00
0
754.00
0.00
5.00
0.00
0
754.00
0.00
7.50
0.00
0
754.00
0.00
10.00
0.08
140
754.02
0.00
12.50
1.50
19,301
755.75
0.35
15.00
0.47
20,241
755.82
0.58
17.50
0.31
19,402
755.75
0.37
20.00
0.21
18,903
755.72
0.27
22.50
0.19
18,611
755.69
0.21
25.00
0.00
18,010
755.64
0.12
27.50
0.00
17,248
755.58
0.07
30.00
0.00
16,597
755.53
0.07
32.50
0.00
15,959
755.48
0.07
35.00
0.00
15,331
755.43
0.07
37.50
0.00
14,716
755.38
0.07
40.00
0.00
14,112
755.33
0.07
42.50
0.00
13,519
755.28
0.07
45.00
0.00
12,938
755.23
0.06
47.50
0.00
12,370
755.18
0.06
50.00
0.00
11,813
755.14
0.06
52.50
0.00
11,268
755.09
0.06
55.00
0.00
10,735
755.04
0.06
57.50
0.00
10,214
755.00
0.06
60.00
0.00
9,705
754.96
0.06
62.50
0.00
9,209
754.91
0.05
65.00
0.00
8,725
754.87
0.05
67.50
0.00
8,254
754.83
0.05
70.00
0.00
7,795
754.79
0.05
72.50
0.00
7,349
754.75
0.05
75.00
0.00
6,916
754.71
0.05
77.50
0.00
6,497
754.67
0.05
80.00
0.00
6,090
754.63
0.04
82.50
0.00
5,697
754.59
0.04
85.00
0.00
5,317
754.55
0.04
87.50
0.00
4,952
754.52
0.04
90.00
0.00
4,599
754.48
0.04
92.50
0.00
4,261
754.45
0.04
95.00
0.00
3,937
754.42
0.04
97.50
0.00
3,627
754.39
0.03
100.00
0.00
3,332
754.36
0.03
102.50
0.00
3,050
754.33
0.03
105.00
0.00
2,783
754.30
0.03
107.50
0.00
2,531
754.27
0.03
110.00
0.00
2,294
754.25
0.03
112.50
0.00
2,072
754.23
0.02
115.00
0.00
1,864
754.20
0.02
117.50
0.00
1,671
754.18
0.02
120.00
0.00
1,494
754.16
0.02

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 37
Stage -Area -Storage for Pond 16: Prop Modified BMP 6 - Wet Pond
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
754.00
8,870
0
754.05
8,999
447
754.10
9,129
900
754.15
9,260
1,360
754.20
9,392
1,826
754.25
9,525
2,299
754.30
9,659
2,779
754.35
9,794
3,265
754.40
9,930
3,758
754.45
10,067
4,258
754.50
10,204
4,765
754.55
10,343
5,278
754.60
10,482
5,799
754.65
10,623
6,327
754.70
10,764
6,861
754.75
10,906
7,403
754.80
11,050
7,952
754.85
11,194
8,508
754.90
11,339
9,071
754.95
11,485
9,642
755.00
11,632
10,220
755.05
11,701
10,803
755.10
11,771
11,390
755.15
11,841
11,980
755.20
11,911
12,574
755.25
11,981
13,171
755.30
12,051
13,772
755.35
12,122
14,377
755.40
12,193
14,984
755.45
12,264
15,596
755.50
12,335
16,211
755.55
12,406
16,829
755.60
12,478
17,451
755.65
12,550
18,077
755.70
12,622
18,706
755.75
12,694
19,339
755.80
12,767
19,976
755.85
12,839
20,616
755.90
12,912
21,260
755.95
12,985
21,907
756.00
13,059
22,558
756.05
13,132
23,213
756.10
13,206
23,872
756.15
13,280
24,534
756.20
13,354
25,200
756.25
13,428
25,869
756.30
13,503
26,542
756.35
13,578
27,219
756.40
13,653
27,900
756.45
13,728
28,585
756.50
13,803
29,273
756.55
13,879
29,965
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
756.60
13,954
30,661
756.65
14,030
31,360
756.70
14,107
32,064
756.75
14,183
32,771
756.80
14,260
33,482
756.85
14,336
34,197
756.90
14,413
34,916
756.95
14,491
35,638
757.00
14,568
36,365
757.05
14,646
37,095
757.10
14,723
37,829
757.15
14,801
38,568
757.20
14,880
39,310
757.25
14,958
40,055
757.30
15,037
40,805
757.35
15,116
41,559
757.40
15,195
42,317
757.45
15,274
43,079
757.50
15,354
43,844
757.55
15,433
44,614
757.60
15,513
45,388
757.65
15,593
46,165
757.70
15,674
46,947
757.75
15,754
47,733
757.80
15,835
48,522
757.85
15,916
49,316
757.90
15,997
50,114
757.95
16,078
50,916
758.00
16,160
51,722
758.05
16,241
52,532
758.10
16,323
53,346
758.15
16,406
54,164
758.20
16,488
54,987
758.25
16,571
55,813
758.30
16,653
56,644
758.35
16,736
57,478
758.40
16,820
58,317
758.45
16,903
59,160
758.50
16,987
60,008
758.55
17,070
60,859
758.60
17,154
61,715
758.65
17,239
62,574
758.70
17,323
63,438
758.75
17,408
64,307
758.80
17,493
65,179
758.85
17,578
66,056
758.90
17,663
66,937
758.95
17,748
67,822
759.00
17,834
68,712

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 38
Summary for Pond 17: BMP 6 PP
[43] Hint: Has no inflow (Outflow=Zero)
Volume Invert Avail.Storaae Storaae Description
#1 748.00' 24,668 cf Permanent Pool (Prismatic)Listed below (Recalc)
#2 752.00' 3,859 cf Forebay (Prismatic)Listed below (Recalc)
28,527 cf Total Available Storage
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet)
(cubic -feet)
748.00
2,152
0
0
749.00
2,734
2,443
2,443
754.00
6,156
22,225
24,668
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet)
(cubic -feet)
752.00
1,145
0
0
754.00
2,714
3,859
3,859

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 39
Elevation
Storage
(feet)
(cubic -feet)
748.00
0
748.04
87
748.08
174
748.12
262
748.16
352
748.20
442
748.24
533
748.28
625
748.32
718
748.36
812
748.40
907
748.44
1,003
748.48
1,100
748.52
1,198
748.56
1,296
748.60
1,396
748.64
1,496
748.68
1,598
748.72
1,700
748.76
1,804
748.80
1,908
748.84
2,013
748.88
2,119
748.92
2,226
748.96
2,334
749.00
2,443
749.04
2,553
749.08
2,664
749.12
2,776
749.16
2,889
749.20
3,003
749.24
3,119
749.28
3,235
749.32
3,353
749.36
3,472
749.40
3,591
749.44
3,712
749.48
3,834
749.52
3,957
749.56
4,081
749.60
4,207
749.64
4,333
749.68
4,460
749.72
4,589
749.76
4,718
749.80
4,849
749.84
4,981
749.88
5,114
749.92
5,248
749.96
5,383
750.00
5,519
750.04
5,656
Stage -Area -Storage for Pond 17: BMP 6 PP
Elevation
Storage
(feet)
(cubic -feet)
750.08
5,795
750.12
5,934
750.16
6,075
750.20
6,217
750.24
6,359
750.28
6,503
750.32
6,648
750.36
6,794
750.40
6,941
750.44
7,090
750.48
7,239
750.52
7,389
750.56
7,541
750.60
7,693
750.64
7,847
750.68
8,002
750.72
8,158
750.76
8,315
750.80
8,473
750.84
8,632
750.88
8,792
750.92
8,954
750.96
9,116
751.00
9,280
751.04
9,444
751.08
9,610
751.12
9,777
751.16
9,945
751.20
10,114
751.24
10,284
751.28
10,455
751.32
10,628
751.36
10,801
751.40
10,976
751.44
11,151
751.48
11,328
751.52
11,506
751.56
11,685
751.60
11,865
751.64
12,046
751.68
12,228
751.72
12,411
751.76
12,596
751.80
12,781
751.84
12,968
751.88
13,155
751.92
13,344
751.96
13,534
752.00
13,725
752.04
13,963
752.08
14,204
752.12
14,447
Elevation
Storage
(feet)
(cubic -feet)
752.16
14,693
752.20
14,941
752.24
15,191
752.28
15,443
752.32
15,698
752.36
15,956
752.40
16,215
752.44
16,477
752.48
16,741
752.52
17,008
752.56
17,277
752.60
17,549
752.64
17,822
752.68
18,098
752.72
18,377
752.76
18,657
752.80
18,941
752.84
19,226
752.88
19,514
752.92
19,804
752.96
20,097
753.00
20,391
753.04
20,689
753.08
20,988
753.12
21,290
753.16
21,594
753.20
21,901
753.24
22,210
753.28
22,521
753.32
22,835
753.36
23,151
753.40
23,469
753.44
23,790
753.48
24,113
753.52
24,439
753.56
24,766
753.60
25,097
753.64
25,429
753.68
25,764
753.72
26,101
753.76
26,441
753.80
26,782
753.84
27,127
753.88
27,473
753.92
27,822
753.96
28,173
754.00
28,527

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 40
Summary for Link 9: Pre-Dev P0I-6
Inflow Area = 4.820 ac, 16.60% Impervious, Inflow Depth = 0.96" for 2-YR event
Inflow = 2.90 cfs @ 12.08 hrs, Volume= 0.385 of
Primary = 2.90 cfs @ 12.08 hrs, Volume= 0.385 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 9: Pre-Dev P0I-6
Hyd rog raph
C Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 41
Hydrograph for Link 9: Pre-Dev P0I-6
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.00
0.00
0.00
5.00
0.00
0.00
0.00
7.50
0.00
0.00
0.00
10.00
0.00
0.00
0.00
12.50
1.69
0.00
1.69
15.00
0.31
0.00
0.31
17.50
0.20
0.00
0.20
20.00
0.14
0.00
0.14
22.50
0.12
0.00
0.12
25.00
0.04
0.00
0.04
27.50
0.01
0.00
0.01
30.00
0.00
0.00
0.00
32.50
0.00
0.00
0.00
35.00
0.00
0.00
0.00
37.50
0.00
0.00
0.00
40.00
0.00
0.00
0.00
42.50
0.00
0.00
0.00
45.00
0.00
0.00
0.00
47.50
0.00
0.00
0.00
50.00
0.00
0.00
0.00
52.50
0.00
0.00
0.00
55.00
0.00
0.00
0.00
57.50
0.00
0.00
0.00
60.00
0.00
0.00
0.00
62.50
0.00
0.00
0.00
65.00
0.00
0.00
0.00
67.50
0.00
0.00
0.00
70.00
0.00
0.00
0.00
72.50
0.00
0.00
0.00
75.00
0.00
0.00
0.00
77.50
0.00
0.00
0.00
80.00
0.00
0.00
0.00
82.50
0.00
0.00
0.00
85.00
0.00
0.00
0.00
87.50
0.00
0.00
0.00
90.00
0.00
0.00
0.00
92.50
0.00
0.00
0.00
95.00
0.00
0.00
0.00
97.50
0.00
0.00
0.00
100.00
0.00
0.00
0.00
102.50
0.00
0.00
0.00
105.00
0.00
0.00
0.00
107.50
0.00
0.00
0.00
110.00
0.00
0.00
0.00
112.50
0.00
0.00
0.00
115.00
0.00
0.00
0.00
117.50
0.00
0.00
0.00
120.00
0.00
0.00
0.00

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 42
Summary for Link 19: Post-Dev P0I-6
Inflow Area = 6.110 ac, 54.66% Impervious, Inflow Depth > 1.51" for 2-YR event
Inflow = 0.72 cfs @ 13.56 hrs, Volume= 0.767 of
Primary = 0.72 cfs @ 13.56 hrs, Volume= 0.767 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 19: Post-Dev P0I-6
Hyd rog raph
-
---- --+--
--+--
--+--
--+-- ---- --+-- -- Clnflow
0.8
,'�
0.72 cfs
-
----
-
---- ----
❑ Primary
0.75
0.72 cfs
_
0.7
0.65
0.6
-T--
T
--T----T--T--T
-T--
T --T----T--T--T T--T----T-
0.55
0.5
0.45
-- —T—T--+--T--I--T--T--T—T--+--T--I--T--T--T--I--T--T--I--T--
3 0.4
o
a 0.35
--
-
--+--
----
--+-- -
--+-- ---- --+-- ---- -- ---- --
0.25
----I
--T--I---I--
T --T--I---I
--T--I---I---I --T --I-- �__�--I---I--
0.2
it
0.1
-- - -
-- -- ----�i--;--;--i--;--
0.05
0
0 5
10 15 20 25
30
35
40 45
50 55 60 65
70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type/1 24-hr 2-YR Rainfall=3.34"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 43
Hydrograph for Link 19: Post-Dev P0I-6
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.00
0.00
0.00
5.00
0.00
0.00
0.00
7.50
0.00
0.00
0.00
10.00
0.00
0.00
0.00
12.50
0.35
0.00
0.35
15.00
0.58
0.00
0.58
17.50
0.37
0.00
0.37
20.00
0.27
0.00
0.27
22.50
0.21
0.00
0.21
25.00
0.12
0.00
0.12
27.50
0.07
0.00
0.07
30.00
0.07
0.00
0.07
32.50
0.07
0.00
0.07
35.00
0.07
0.00
0.07
37.50
0.07
0.00
0.07
40.00
0.07
0.00
0.07
42.50
0.07
0.00
0.07
45.00
0.06
0.00
0.06
47.50
0.06
0.00
0.06
50.00
0.06
0.00
0.06
52.50
0.06
0.00
0.06
55.00
0.06
0.00
0.06
57.50
0.06
0.00
0.06
60.00
0.06
0.00
0.06
62.50
0.05
0.00
0.05
65.00
0.05
0.00
0.05
67.50
0.05
0.00
0.05
70.00
0.05
0.00
0.05
72.50
0.05
0.00
0.05
75.00
0.05
0.00
0.05
77.50
0.05
0.00
0.05
80.00
0.04
0.00
0.04
82.50
0.04
0.00
0.04
85.00
0.04
0.00
0.04
87.50
0.04
0.00
0.04
90.00
0.04
0.00
0.04
92.50
0.04
0.00
0.04
95.00
0.04
0.00
0.04
97.50
0.03
0.00
0.03
100.00
0.03
0.00
0.03
102.50
0.03
0.00
0.03
105.00
0.03
0.00
0.03
107.50
0.03
0.00
0.03
110.00
0.03
0.00
0.03
112.50
0.02
0.00
0.02
115.00
0.02
0.00
0.02
117.50
0.02
0.00
0.02
120.00
0.02
0.00
0.02

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 44
Summary for Subcatchment 1: EX BYP1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.98 cfs @ 11.95 hrs, Volume= 0.049 af, Depth= 4.50"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-YR Rainfall=5.76"
Area (ac) CN
Description
0.100 98
Paved parking, HSG B
0.030 61
>75% Grass cover, Good, HSG B
0.130 89
Weighted Average
0.030
23.08% Pervious Area
0.100
76.92% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 1: EX BYP1
Hydrograph
MEN
L L L L ■Runoff
,Type 1(24-hr
25-YR RainfaillT5.76"
Rw n bff Area=0.1'� 30 ac
ROnOff'VQ1L;me=',0.04$ clf
R6noff Depth= 4.501,
TcT5.0 tnih
PN=8$
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 45
Hydrograph for Subcatchment 1: EX BYP1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.16
0.00
0.00
5.00
0.36
0.01
0.00
7.50
0.63
0.09
0.01
10.00
1.04
0.31
0.02
12.50
4.23
3.04
0.07
15.00
4.92
3.69
0.02
17.50
5.25
4.01
0.01
20.00
5.48
4.24
0.01
22.50
5.66
4.41
0.01
25.00
5.76
4.50
0.00
27.50
5.76
4.50
0.00
30.00
5.76
4.50
0.00
32.50
5.76
4.50
0.00
35.00
5.76
4.50
0.00
37.50
5.76
4.50
0.00
40.00
5.76
4.50
0.00
42.50
5.76
4.50
0.00
45.00
5.76
4.50
0.00
47.50
5.76
4.50
0.00
50.00
5.76
4.50
0.00
52.50
5.76
4.50
0.00
55.00
5.76
4.50
0.00
57.50
5.76
4.50
0.00
60.00
5.76
4.50
0.00
62.50
5.76
4.50
0.00
65.00
5.76
4.50
0.00
67.50
5.76
4.50
0.00
70.00
5.76
4.50
0.00
72.50
5.76
4.50
0.00
75.00
5.76
4.50
0.00
77.50
5.76
4.50
0.00
80.00
5.76
4.50
0.00
82.50
5.76
4.50
0.00
85.00
5.76
4.50
0.00
87.50
5.76
4.50
0.00
90.00
5.76
4.50
0.00
92.50
5.76
4.50
0.00
95.00
5.76
4.50
0.00
97.50
5.76
4.50
0.00
100.00
5.76
4.50
0.00
102.50
5.76
4.50
0.00
105.00
5.76
4.50
0.00
107.50
5.76
4.50
0.00
110.00
5.76
4.50
0.00
112.50
5.76
4.50
0.00
115.00
5.76
4.50
0.00
117.50
5.76
4.50
0.00
120.00
5.76
4.50
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 46
Summary for Subcatchment 2: EX BMP3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 6.43 cfs @ 11.96 hrs, Volume= 0.302 af, Depth= 1.85"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-YR Rainfall=5.76"
Area (ac) CN Description
1.960 61 >75% Grass cover, Good, HSG B
1.960 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 2: EX BMP3
Hydrograph
--r--I---I--r--r--r--r--I---I--r--r--t--r--r--r--I--r--r--r--r--r--I---I--
7 ■Runoff
6.43 cfs
79
,Type l 20 r
6 I I I I I I I
--
15-YR Rainfall:;5.761' 2
5 Rwnb AIIreA=1.960 ad
--I'I- --I-- -- --I -------- --------------R4n_OffIIIVpkjm+e=O.$0�_clf_
4 k6noff IIIDepthT1.851'
LL 3 --II- --II- --III --III--------II- - --III --III--------II-- -Tc= 5 aInih-
P N=61
---- -- ------------ -- -- -- --------- -- -- ------------
2
--I--I--�--1--L--1---I---I--J--1--1--L--L--1---1--J--1--L--�--I---I---I--
1 I I I I I I I I I I I I I I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 47
Hydrograph for Subcatchment 2: EX BMP3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.16
0.00
0.00
5.00
0.36
0.00
0.00
7.50
0.63
0.00
0.00
10.00
1.04
0.00
0.00
12.50
4.23
0.93
0.63
15.00
4.92
1.32
0.21
17.50
5.25
1.52
0.14
20.00
5.48
1.67
0.10
22.50
5.66
1.78
0.09
25.00
5.76
1.85
0.00
27.50
5.76
1.85
0.00
30.00
5.76
1.85
0.00
32.50
5.76
1.85
0.00
35.00
5.76
1.85
0.00
37.50
5.76
1.85
0.00
40.00
5.76
1.85
0.00
42.50
5.76
1.85
0.00
45.00
5.76
1.85
0.00
47.50
5.76
1.85
0.00
50.00
5.76
1.85
0.00
52.50
5.76
1.85
0.00
55.00
5.76
1.85
0.00
57.50
5.76
1.85
0.00
60.00
5.76
1.85
0.00
62.50
5.76
1.85
0.00
65.00
5.76
1.85
0.00
67.50
5.76
1.85
0.00
70.00
5.76
1.85
0.00
72.50
5.76
1.85
0.00
75.00
5.76
1.85
0.00
77.50
5.76
1.85
0.00
80.00
5.76
1.85
0.00
82.50
5.76
1.85
0.00
85.00
5.76
1.85
0.00
87.50
5.76
1.85
0.00
90.00
5.76
1.85
0.00
92.50
5.76
1.85
0.00
95.00
5.76
1.85
0.00
97.50
5.76
1.85
0.00
100.00
5.76
1.85
0.00
102.50
5.76
1.85
0.00
105.00
5.76
1.85
0.00
107.50
5.76
1.85
0.00
110.00
5.76
1.85
0.00
112.50
5.76
1.85
0.00
115.00
5.76
1.85
0.00
117.50
5.76
1.85
0.00
120.00
5.76
1.85
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 48
Summary for Subcatchment 3: EX BYP3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 3.09 cfs @ 11.96 hrs, Volume= 0.143 af, Depth= 2.18"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-YR Rainfall=5.76"
Area (ac) CN Adi Description
0.190
98 Unconnected pavement, HSG B
0.600
61 >75% Grass cover, Good, HSG B
0.790
70 65 Weighted Average, UI Adjusted
0.600
75.95% Pervious Area
0.190
24.05% Impervious Area
0.190
100.00% Unconnected
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 3: EX BYP3
Hydrograph
I I II II II II II II II II II II II II II II II II II II II II II ❑Runoff
3.09 cfs
3 Type
25-YR RainfaillT5.761'
Rwnbff Area=0.790 ad
-c1f -
w 2 1
Runoff DepthT2.1181'
3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
LL
Tc"5.0 to i h
U J .,�dj psteo CN=65
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 49
Hydrograph for Subcatchment 3: EX BYP3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.16
0.00
0.00
5.00
0.36
0.00
0.00
7.50
0.63
0.00
0.00
10.00
1.04
0.00
0.00
12.50
4.23
1.17
0.29
15.00
4.92
1.60
0.09
17.50
5.25
1.82
0.06
20.00
5.48
1.98
0.04
22.50
5.66
2.11
0.04
25.00
5.76
2.18
0.00
27.50
5.76
2.18
0.00
30.00
5.76
2.18
0.00
32.50
5.76
2.18
0.00
35.00
5.76
2.18
0.00
37.50
5.76
2.18
0.00
40.00
5.76
2.18
0.00
42.50
5.76
2.18
0.00
45.00
5.76
2.18
0.00
47.50
5.76
2.18
0.00
50.00
5.76
2.18
0.00
52.50
5.76
2.18
0.00
55.00
5.76
2.18
0.00
57.50
5.76
2.18
0.00
60.00
5.76
2.18
0.00
62.50
5.76
2.18
0.00
65.00
5.76
2.18
0.00
67.50
5.76
2.18
0.00
70.00
5.76
2.18
0.00
72.50
5.76
2.18
0.00
75.00
5.76
2.18
0.00
77.50
5.76
2.18
0.00
80.00
5.76
2.18
0.00
82.50
5.76
2.18
0.00
85.00
5.76
2.18
0.00
87.50
5.76
2.18
0.00
90.00
5.76
2.18
0.00
92.50
5.76
2.18
0.00
95.00
5.76
2.18
0.00
97.50
5.76
2.18
0.00
100.00
5.76
2.18
0.00
102.50
5.76
2.18
0.00
105.00
5.76
2.18
0.00
107.50
5.76
2.18
0.00
110.00
5.76
2.18
0.00
112.50
5.76
2.18
0.00
115.00
5.76
2.18
0.00
117.50
5.76
2.18
0.00
120.00
5.76
2.18
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 50
Summary for Subcatchment 4: EX BYP5
[49] Hint: Tc<2dt may require smaller dt
Runoff = 1.72 cfs @ 11.96 hrs, Volume= 0.080 af, Depth= 2.18"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-YR Rainfall=5.76"
Area (ac) CN Adi Description
0.100
98 Unconnected pavement, HSG B
0.340
61 >75% Grass cover, Good, HSG B
0.440
69 65 Weighted Average, UI Adjusted
0.340
77.27% Pervious Area
0.100
22.73% Impervious Area
0.100
100.00% Unconnected
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 4: EX BYP5
Hydrograph
I I II II II II II II II II II II II II II II II II II II II II II ❑Runoff
1.72 cfs
(Type 1( 24-1l'r
25-YR RainfaillT5.76''
Runbff Area=0.440 ad
RLjnpff'IVQ1Ljme='10.080 clf
w --il- --II-- 4ffi �i--?--�i---�i---�i---�i---II--?--?--I-I--RUII-II-n-- �DepfhT
I-- 2
- � -II �11-
.l11
3 I I I I I I I I I I I I I I I I I I I
LL
Tc"5.0 to i h
UJ A'djpsteo CN=65
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 51
Hydrograph for Subcatchment 4: EX BYP5
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.16
0.00
0.00
5.00
0.36
0.00
0.00
7.50
0.63
0.00
0.00
10.00
1.04
0.00
0.00
12.50
4.23
1.17
0.16
15.00
4.92
1.60
0.05
17.50
5.25
1.82
0.03
20.00
5.48
1.98
0.02
22.50
5.66
2.11
0.02
25.00
5.76
2.18
0.00
27.50
5.76
2.18
0.00
30.00
5.76
2.18
0.00
32.50
5.76
2.18
0.00
35.00
5.76
2.18
0.00
37.50
5.76
2.18
0.00
40.00
5.76
2.18
0.00
42.50
5.76
2.18
0.00
45.00
5.76
2.18
0.00
47.50
5.76
2.18
0.00
50.00
5.76
2.18
0.00
52.50
5.76
2.18
0.00
55.00
5.76
2.18
0.00
57.50
5.76
2.18
0.00
60.00
5.76
2.18
0.00
62.50
5.76
2.18
0.00
65.00
5.76
2.18
0.00
67.50
5.76
2.18
0.00
70.00
5.76
2.18
0.00
72.50
5.76
2.18
0.00
75.00
5.76
2.18
0.00
77.50
5.76
2.18
0.00
80.00
5.76
2.18
0.00
82.50
5.76
2.18
0.00
85.00
5.76
2.18
0.00
87.50
5.76
2.18
0.00
90.00
5.76
2.18
0.00
92.50
5.76
2.18
0.00
95.00
5.76
2.18
0.00
97.50
5.76
2.18
0.00
100.00
5.76
2.18
0.00
102.50
5.76
2.18
0.00
105.00
5.76
2.18
0.00
107.50
5.76
2.18
0.00
110.00
5.76
2.18
0.00
112.50
5.76
2.18
0.00
115.00
5.76
2.18
0.00
117.50
5.76
2.18
0.00
120.00
5.76
2.18
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 52
Summary for Subcatchment 5: EX BMP6
[49] Hint: Tc<2dt may require smaller dt
Runoff = 23.31 cfs @ 11.96 hrs, Volume= 1.078 af, Depth= 2.71"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-YR Rainfall=5.76"
Area (ac) CN
Adj
Description
0.800 98
Unconnected pavement, HSG B
3.980 69
50-75% Grass cover, Fair, HSG B
4.780 74
71
Weighted Average, UI Adjusted
3.980
83.26% Pervious Area
0.800
16.74% Impervious Area
0.800
100.00% Unconnected
Tc Length
Slope
Velocity Capacity Description
(min) (feet)
(ft/ft)
(ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 5: EX BMP6
Hydrograph
26
,I
--r--I---I--r--r--r--r--r--I---I--r--r--r--t--r--r--r--I---I--r--r--r--r--
--' -----'I-- 'I'I---'I
--'
--'
- -'
------- ----'I
---'I
--'-I --' --'------- - - - -'I ---'I --' --' --
■Runoff
25
24
23
�I
'
- -r--I---I--r-
-- 23.31 cfs -'-- --
--r--li--t--t--+--r
-r-
--
-r--r--r--I---I--r--r--r--+-
--
-----------'--
-I---li
--li--t--7-
--
-r--r--r--I---I--r--+--r--r--
-- -------------'-�}- -- -- -- --
7--+--r--Ir -Ir iTl'e-1IT
22
21
20
�I
'I
�I
--Ir- -li---
--'-- -'-- --
I I I
- t-
--
I
- t--r--Ir--Ir--li-
--
I
-----------'--
I I
---7--7--t
I I I
--
I
-
--' -25'Y-RRai_rrfaIIT5.76" -
I I I 1 1i-]�i
19
18
i l
--r----r--r--r--r--r--r----r--r--r*War/
--'-----!--!
--!
--!
-----------'--!
--!
}ice ri��ip
-lKpi6� ak./!v��d-
Ipp I IIr I I I IA I I I
17
16�-
--r- -I
--1--1--L--'---'---'--J--1--1RJOnpf#LV-p1p�Ie=1,
III
�4'--
N 15
V 14
,
--II --II--7--7--T--1
--'---1--1--1--1--L----------J--1--1--1--RWII�IIIiD
--II
-----II--1--7--7--T--r--r_--I--r---r--r--r--rn--r--
rTI/11�--
3 13
0 112
LL
--T - - r
-- --'I1-----1I1----1rr----r
r
11-----T1r-----rLr----'1------'I----
r--r--
I -
--
--I----J-----r11-----r
T r r r - -I- I ru--r r - -r --
J_T_�1T_�1r`�1-_-
11-----T1r-----rLr---rL--_-I-�ryJ-■-'--�moI_y Tr__
9
�I
I I I
--r - -I-- r--
I
r--
I
r--r
I I
--r
I I I
-- I - - - I - - r-
I
-
- r
I I I
-r--r--r
8
7 z
--'-- -1--1--1--1--L--'---'---'--J--1--1--1--L--L--1---1---1--1--1--1--r--
r--r--r--r--r--I---I--r--r--r--r--r--r--I---I---I--r--r--r--r--
I
I
6
,I
--'-- -1--1--1--1--L--'---'---'--J--1--1--1--L--L----------1--1--1--r--
I I I
I
r
I
rr
I I
I I I
I
I I I I I I I I
rrrrrI I I
r-r --
4
3
--1--_-1---1---1
--
r --
r--1---1---1---1---1
---1
r--r--
---1 -- r --r--1---1---1---1
2
--1----r--1--r--r--1---1---1--
--1--1--r--r--
--1---1---1--1--r--r--r--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 53
Hydrograph for Subcatchment 5: EX BMP6
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.16
0.00
0.00
5.00
0.36
0.00
0.00
7.50
0.63
0.00
0.00
10.00
1.04
0.01
0.10
12.50
4.23
1.56
2.03
15.00
4.92
2.05
0.64
17.50
5.25
2.31
0.42
20.00
5.48
2.49
0.29
22.50
5.66
2.63
0.26
25.00
5.76
2.71
0.00
27.50
5.76
2.71
0.00
30.00
5.76
2.71
0.00
32.50
5.76
2.71
0.00
35.00
5.76
2.71
0.00
37.50
5.76
2.71
0.00
40.00
5.76
2.71
0.00
42.50
5.76
2.71
0.00
45.00
5.76
2.71
0.00
47.50
5.76
2.71
0.00
50.00
5.76
2.71
0.00
52.50
5.76
2.71
0.00
55.00
5.76
2.71
0.00
57.50
5.76
2.71
0.00
60.00
5.76
2.71
0.00
62.50
5.76
2.71
0.00
65.00
5.76
2.71
0.00
67.50
5.76
2.71
0.00
70.00
5.76
2.71
0.00
72.50
5.76
2.71
0.00
75.00
5.76
2.71
0.00
77.50
5.76
2.71
0.00
80.00
5.76
2.71
0.00
82.50
5.76
2.71
0.00
85.00
5.76
2.71
0.00
87.50
5.76
2.71
0.00
90.00
5.76
2.71
0.00
92.50
5.76
2.71
0.00
95.00
5.76
2.71
0.00
97.50
5.76
2.71
0.00
100.00
5.76
2.71
0.00
102.50
5.76
2.71
0.00
105.00
5.76
2.71
0.00
107.50
5.76
2.71
0.00
110.00
5.76
2.71
0.00
112.50
5.76
2.71
0.00
115.00
5.76
2.71
0.00
117.50
5.76
2.71
0.00
120.00
5.76
2.71
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 54
Summary for Subcatchment 6: EX BYP8
[49] Hint: Tc<2dt may require smaller dt
Runoff = 6.10 cfs @ 11.96 hrs, Volume= 0.286 af, Depth= 1.85"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-YR Rainfall=5.76"
Area (ac) CN Description
1.860 61 >75% Grass cover, Good, HSG B
1.860 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 6: EX BYP8
Hydrograph
� � �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I ■Runoff
6.10 cfs
6 �TYpe k 24-hr
5 �Runbff A'reia=1.860 ad
--,--7--r-- ,--------,,Rqn-4ff'VQIp e=:0.- 8�-of-
4
Runoff Depth=0.85"
3 - _
LL 3 - -- -- - -- -- -- - -- ---1rcT5.',0 rni
z
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 55
Hydrograph for Subcatchment 6: EX BYP8
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.16
0.00
0.00
5.00
0.36
0.00
0.00
7.50
0.63
0.00
0.00
10.00
1.04
0.00
0.00
12.50
4.23
0.93
0.60
15.00
4.92
1.32
0.20
17.50
5.25
1.52
0.13
20.00
5.48
1.67
0.09
22.50
5.66
1.78
0.08
25.00
5.76
1.85
0.00
27.50
5.76
1.85
0.00
30.00
5.76
1.85
0.00
32.50
5.76
1.85
0.00
35.00
5.76
1.85
0.00
37.50
5.76
1.85
0.00
40.00
5.76
1.85
0.00
42.50
5.76
1.85
0.00
45.00
5.76
1.85
0.00
47.50
5.76
1.85
0.00
50.00
5.76
1.85
0.00
52.50
5.76
1.85
0.00
55.00
5.76
1.85
0.00
57.50
5.76
1.85
0.00
60.00
5.76
1.85
0.00
62.50
5.76
1.85
0.00
65.00
5.76
1.85
0.00
67.50
5.76
1.85
0.00
70.00
5.76
1.85
0.00
72.50
5.76
1.85
0.00
75.00
5.76
1.85
0.00
77.50
5.76
1.85
0.00
80.00
5.76
1.85
0.00
82.50
5.76
1.85
0.00
85.00
5.76
1.85
0.00
87.50
5.76
1.85
0.00
90.00
5.76
1.85
0.00
92.50
5.76
1.85
0.00
95.00
5.76
1.85
0.00
97.50
5.76
1.85
0.00
100.00
5.76
1.85
0.00
102.50
5.76
1.85
0.00
105.00
5.76
1.85
0.00
107.50
5.76
1.85
0.00
110.00
5.76
1.85
0.00
112.50
5.76
1.85
0.00
115.00
5.76
1.85
0.00
117.50
5.76
1.85
0.00
120.00
5.76
1.85
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 56
Summary for Subcatchment 8: EX BYP6
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.13 cfs @ 11.96 hrs, Volume= 0.006 af, Depth= 1.85"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-YR Rainfall=5.76"
Area (ac) CN Description
0.040 61 >75% Grass cover, Good, HSG B
0.040 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 8: EX BYP6
Hydrograph
0.14 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
-- 0.13 cfs J--1--L--L--1--L--L--1--L--1---1----L--L--1---1---1--L--+--L--1--
0.13+hr
0.12 ' 1 W p
- -- - -- T--------'-- -- T -- T--1---'-- -- -2J YR-Ralftfall. .77-611'-
RU
0.11 1 1 1
-I-- ---L--L--I I--L----+--L--1---1-- r11�#f-Afire =9. 40�c-
0.1 1 1 1 1 1 1 1
0.09 1 ngff 11Vgl�m�e=10.10 If
----1--1- -- --
-- 1 1 1 1 1 1 1 1 1 1
0.08 RU na$11Qepfh�1,85G'_
— — — — + — — — — 1— — —1— — —
0 0.07 �`}
LL --I--—T--T__T--T--__T--T--T--T-------T--T--T-----I— ,'c-.YII-h
0.06
--1----1---1--1---1---1---1---1---1--1---1---1-- ----- 1---1---1---1-- -CN=-61
0.05
0.04
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
0.03 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 --1-- -1----1--1---1---1---1---1---1--1---1---1---1---1--1---1---1---1---1--1---1----1--
0.02
--+- +--+--+--+--+-+--+--+--+--+--1--+--+--+--1---1---1--+--+--+--+-
0.01
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)
■ Runoff

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 57
Hydrograph for Subcatchment 8: EX BYP6
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.16
0.00
0.00
5.00
0.36
0.00
0.00
7.50
0.63
0.00
0.00
10.00
1.04
0.00
0.00
12.50
4.23
0.93
0.01
15.00
4.92
1.32
0.00
17.50
5.25
1.52
0.00
20.00
5.48
1.67
0.00
22.50
5.66
1.78
0.00
25.00
5.76
1.85
0.00
27.50
5.76
1.85
0.00
30.00
5.76
1.85
0.00
32.50
5.76
1.85
0.00
35.00
5.76
1.85
0.00
37.50
5.76
1.85
0.00
40.00
5.76
1.85
0.00
42.50
5.76
1.85
0.00
45.00
5.76
1.85
0.00
47.50
5.76
1.85
0.00
50.00
5.76
1.85
0.00
52.50
5.76
1.85
0.00
55.00
5.76
1.85
0.00
57.50
5.76
1.85
0.00
60.00
5.76
1.85
0.00
62.50
5.76
1.85
0.00
65.00
5.76
1.85
0.00
67.50
5.76
1.85
0.00
70.00
5.76
1.85
0.00
72.50
5.76
1.85
0.00
75.00
5.76
1.85
0.00
77.50
5.76
1.85
0.00
80.00
5.76
1.85
0.00
82.50
5.76
1.85
0.00
85.00
5.76
1.85
0.00
87.50
5.76
1.85
0.00
90.00
5.76
1.85
0.00
92.50
5.76
1.85
0.00
95.00
5.76
1.85
0.00
97.50
5.76
1.85
0.00
100.00
5.76
1.85
0.00
102.50
5.76
1.85
0.00
105.00
5.76
1.85
0.00
107.50
5.76
1.85
0.00
110.00
5.76
1.85
0.00
112.50
5.76
1.85
0.00
115.00
5.76
1.85
0.00
117.50
5.76
1.85
0.00
120.00
5.76
1.85
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 58
Summary for Subcatchment 10: BYP1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.98 cfs @ 11.95 hrs, Volume= 0.049 af, Depth= 4.50"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-YR Rainfall=5.76"
Area (ac) CN
Description
0.100 98
Paved parking, HSG B
0.030 61
>75% Grass cover, Good, HSG B
0.130 89
Weighted Average
0.030
23.08% Pervious Area
0.100
76.92% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 10: BYP1
Hydrograph
MEN
L L L L ■Runoff
,Type 1(24-hr
25-YR RainfaillT5.76"
Rw n bff Area=0.1'� 30 ac
ROnOff'VQ1L;me=',0.04$ elf
R6noff Depth= 4.501,
TcT5.0 tnih
PN=8$
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 59
Hydrograph for Subcatchment 10: BYP1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.16
0.00
0.00
5.00
0.36
0.01
0.00
7.50
0.63
0.09
0.01
10.00
1.04
0.31
0.02
12.50
4.23
3.04
0.07
15.00
4.92
3.69
0.02
17.50
5.25
4.01
0.01
20.00
5.48
4.24
0.01
22.50
5.66
4.41
0.01
25.00
5.76
4.50
0.00
27.50
5.76
4.50
0.00
30.00
5.76
4.50
0.00
32.50
5.76
4.50
0.00
35.00
5.76
4.50
0.00
37.50
5.76
4.50
0.00
40.00
5.76
4.50
0.00
42.50
5.76
4.50
0.00
45.00
5.76
4.50
0.00
47.50
5.76
4.50
0.00
50.00
5.76
4.50
0.00
52.50
5.76
4.50
0.00
55.00
5.76
4.50
0.00
57.50
5.76
4.50
0.00
60.00
5.76
4.50
0.00
62.50
5.76
4.50
0.00
65.00
5.76
4.50
0.00
67.50
5.76
4.50
0.00
70.00
5.76
4.50
0.00
72.50
5.76
4.50
0.00
75.00
5.76
4.50
0.00
77.50
5.76
4.50
0.00
80.00
5.76
4.50
0.00
82.50
5.76
4.50
0.00
85.00
5.76
4.50
0.00
87.50
5.76
4.50
0.00
90.00
5.76
4.50
0.00
92.50
5.76
4.50
0.00
95.00
5.76
4.50
0.00
97.50
5.76
4.50
0.00
100.00
5.76
4.50
0.00
102.50
5.76
4.50
0.00
105.00
5.76
4.50
0.00
107.50
5.76
4.50
0.00
110.00
5.76
4.50
0.00
112.50
5.76
4.50
0.00
115.00
5.76
4.50
0.00
117.50
5.76
4.50
0.00
120.00
5.76
4.50
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 60
Summary for Subcatchment 11: BMP3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 11.33 cfs @ 11.96 hrs, Volume= 0.525 af, Depth= 2.89"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-YR Rainfall=5.76"
Area (ac) CN
Description
0.690 98
Unconnected roofs, HSG B
1.490 61
>75% Grass cover, Good, HSG B
2.180 73
Weighted Average
1.490
68.35% Pervious Area
0.690
31.65% Impervious Area
0.690
100.00% Unconnected
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 11: BMP3
Hydrograph
1--1r--1i---1i--y--rt--+--r--1r--1i---1i--y--rt--rt--+--r--1r--1r--1i---1i--�--+--r--r-- ❑Runoff
12 11.33 cfs
--—
--r--r--r--r--I--- I --- I--r--r--r--t--r--r--I------I-- r--r-
- r--
11 I I I I I I I I I I I I I I I I ITy1 p� I1112 -1� r
10 2115-YR Rainfall:;5.761'
--11-- ---t----I--I----------t--------+--t--1--------t--+--t--t--
9 Runoff A1rei�=2.1'180 ad
Rt4n9ff11 Vpl�m11e=0.$2$ akf
— — — — — — — L — — 1 — — L — — L —
I I I I I I I I I I I I I I I I I I I I
7 R�n�ff_11Depth:;2.887--
0 6 TACT -M h1- -
LL — —11 I I I I I I I I I I I I I I I I I I i
5 _1------_—L--1---1---1---1----------1---1---1---I
I I I I I I I I I I I I I I I I I I I jPN=71 —
4
1--1---1---1---1 -- 1---- 1---1---1---1---1---1 ---1 -- 1--- 1---1---1---1---1---1 ---1 -- 1---1---
3
2
1--1---1---1---1 -- 1---- 1---1---1---1---1---1 ---1 -- 1--- 1---1---1---1---1---1 ---1 -- 1---1---
--I--—I----I-- --I --I---I---I---I--I--I--I--I --I---I---I---I--I---- -- --
1
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 61
Hydrograph for Subcatchment 11: BMP3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.16
0.00
0.00
5.00
0.36
0.00
0.00
7.50
0.63
0.00
0.00
10.00
1.04
0.02
0.07
12.50
4.23
1.70
0.97
15.00
4.92
2.21
0.30
17.50
5.25
2.48
0.20
20.00
5.48
2.67
0.13
22.50
5.66
2.81
0.12
25.00
5.76
2.89
0.00
27.50
5.76
2.89
0.00
30.00
5.76
2.89
0.00
32.50
5.76
2.89
0.00
35.00
5.76
2.89
0.00
37.50
5.76
2.89
0.00
40.00
5.76
2.89
0.00
42.50
5.76
2.89
0.00
45.00
5.76
2.89
0.00
47.50
5.76
2.89
0.00
50.00
5.76
2.89
0.00
52.50
5.76
2.89
0.00
55.00
5.76
2.89
0.00
57.50
5.76
2.89
0.00
60.00
5.76
2.89
0.00
62.50
5.76
2.89
0.00
65.00
5.76
2.89
0.00
67.50
5.76
2.89
0.00
70.00
5.76
2.89
0.00
72.50
5.76
2.89
0.00
75.00
5.76
2.89
0.00
77.50
5.76
2.89
0.00
80.00
5.76
2.89
0.00
82.50
5.76
2.89
0.00
85.00
5.76
2.89
0.00
87.50
5.76
2.89
0.00
90.00
5.76
2.89
0.00
92.50
5.76
2.89
0.00
95.00
5.76
2.89
0.00
97.50
5.76
2.89
0.00
100.00
5.76
2.89
0.00
102.50
5.76
2.89
0.00
105.00
5.76
2.89
0.00
107.50
5.76
2.89
0.00
110.00
5.76
2.89
0.00
112.50
5.76
2.89
0.00
115.00
5.76
2.89
0.00
117.50
5.76
2.89
0.00
120.00
5.76
2.89
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 62
Summary for Subcatchment 12: BYP3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 4.57 cfs @ 11.95 hrs, Volume= 0.221 af, Depth= 4.08"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-YR Rainfall=5.76"
Area (ac) CN
Description
0.420 98
Unconnected pavement, HSG B
0.230 61
>75% Grass cover, Good, HSG B
0.650 85
Weighted Average
0.230
35.38% Pervious Area
0.420
64.62% Impervious Area
0.420
100.00% Unconnected
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 12: BYP3
Hydrograph
5 ❑Runoff
4.57 cfs
ITy; pe I I III 24-ICI r
4 215-YR Rainfall:;5.761'
IRunbff Alre�ll=0.650 ad
--II-----,--7--r---------------rt--'Rt nOfflll� Fprrre
3=0.- 24 f-
w Runoff IIIDepth= .0 u481'
3 I I I I I I I I I I I I I I I I I I I
-I-- -- -- ---------I-- -- -- ---------I-- - TcT5 II0 111M
LL I I I I I I I I I I I I I I I I I I I
2 PN=85
1 I I I I I I I I I I I I I I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 63
Hydrograph for Subcatchment 12: BYP3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.16
0.00
0.00
5.00
0.36
0.00
0.00
7.50
0.63
0.04
0.02
10.00
1.04
0.19
0.07
12.50
4.23
2.67
0.36
15.00
4.92
3.29
0.11
17.50
5.25
3.60
0.07
20.00
5.48
3.82
0.05
22.50
5.66
3.98
0.04
25.00
5.76
4.08
0.00
27.50
5.76
4.08
0.00
30.00
5.76
4.08
0.00
32.50
5.76
4.08
0.00
35.00
5.76
4.08
0.00
37.50
5.76
4.08
0.00
40.00
5.76
4.08
0.00
42.50
5.76
4.08
0.00
45.00
5.76
4.08
0.00
47.50
5.76
4.08
0.00
50.00
5.76
4.08
0.00
52.50
5.76
4.08
0.00
55.00
5.76
4.08
0.00
57.50
5.76
4.08
0.00
60.00
5.76
4.08
0.00
62.50
5.76
4.08
0.00
65.00
5.76
4.08
0.00
67.50
5.76
4.08
0.00
70.00
5.76
4.08
0.00
72.50
5.76
4.08
0.00
75.00
5.76
4.08
0.00
77.50
5.76
4.08
0.00
80.00
5.76
4.08
0.00
82.50
5.76
4.08
0.00
85.00
5.76
4.08
0.00
87.50
5.76
4.08
0.00
90.00
5.76
4.08
0.00
92.50
5.76
4.08
0.00
95.00
5.76
4.08
0.00
97.50
5.76
4.08
0.00
100.00
5.76
4.08
0.00
102.50
5.76
4.08
0.00
105.00
5.76
4.08
0.00
107.50
5.76
4.08
0.00
110.00
5.76
4.08
0.00
112.50
5.76
4.08
0.00
115.00
5.76
4.08
0.00
117.50
5.76
4.08
0.00
120.00
5.76
4.08
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 64
Summary for Subcatchment 13: BYP5
[49] Hint: Tc<2dt may require smaller dt
Runoff = 1.56 cfs @ 11.96 hrs, Volume= 0.072 af, Depth= 2.89"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-YR Rainfall=5.76"
Area (ac) CN
Description
0.100 98
Unconnected pavement, HSG B
0.200 61
>75% Grass cover, Good, HSG B
0.300 73
Weighted Average
0.200
66.67% Pervious Area
0.100
33.33% Impervious Area
0.100
100.00% Unconnected
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 13: BYP5
Hydrograph
I I II II II II II II II II II II II II II II II II II II II II II ❑Runoff
1.56 cfs
(Type 1( 24-1l'r
25-YR RainfaillT5.76"
�Runbff Area=0.300 ad
- - - - --Rttnpff'I V1e�07f -
w 1 I I I I I I I I I I I I I I I I I
Runoff I DeI pthIT2.69I I11'
3 I I I I I I I I I I I I I I I I I I I
TcT5.0 tnih
LL I I I I I I I I I I I I I I I I I I I
PN=73
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 65
Hydrograph for Subcatchment 13: BYP5
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.16
0.00
0.00
5.00
0.36
0.00
0.00
7.50
0.63
0.00
0.00
10.00
1.04
0.02
0.01
12.50
4.23
1.70
0.13
15.00
4.92
2.21
0.04
17.50
5.25
2.48
0.03
20.00
5.48
2.67
0.02
22.50
5.66
2.81
0.02
25.00
5.76
2.89
0.00
27.50
5.76
2.89
0.00
30.00
5.76
2.89
0.00
32.50
5.76
2.89
0.00
35.00
5.76
2.89
0.00
37.50
5.76
2.89
0.00
40.00
5.76
2.89
0.00
42.50
5.76
2.89
0.00
45.00
5.76
2.89
0.00
47.50
5.76
2.89
0.00
50.00
5.76
2.89
0.00
52.50
5.76
2.89
0.00
55.00
5.76
2.89
0.00
57.50
5.76
2.89
0.00
60.00
5.76
2.89
0.00
62.50
5.76
2.89
0.00
65.00
5.76
2.89
0.00
67.50
5.76
2.89
0.00
70.00
5.76
2.89
0.00
72.50
5.76
2.89
0.00
75.00
5.76
2.89
0.00
77.50
5.76
2.89
0.00
80.00
5.76
2.89
0.00
82.50
5.76
2.89
0.00
85.00
5.76
2.89
0.00
87.50
5.76
2.89
0.00
90.00
5.76
2.89
0.00
92.50
5.76
2.89
0.00
95.00
5.76
2.89
0.00
97.50
5.76
2.89
0.00
100.00
5.76
2.89
0.00
102.50
5.76
2.89
0.00
105.00
5.76
2.89
0.00
107.50
5.76
2.89
0.00
110.00
5.76
2.89
0.00
112.50
5.76
2.89
0.00
115.00
5.76
2.89
0.00
117.50
5.76
2.89
0.00
120.00
5.76
2.89
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 66
Summary for Subcatchment 14: BMP6
[49] Hint: Tc<2dt may require smaller dt
Runoff = 39.14 cfs @ 11.95 hrs, Volume= 1.854 af, Depth= 3.67"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-YR Rainfall=5.76"
Area (ac) CN Description
3.340 98 Impervious Areas, HSG B
2.730 61 >75% Grass cover, Good, HSG B
6.070 81 Weighted Average
2.730 44.98% Pervious Area
3.340 55.02% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 14: BMP6
Hydrograph
42
--------'-- --
--
--
--------'--
--
--
-- -- ----------'-- -- -- -- --
■Runoff
40
38
'
39.14 cfs
-----7--r--r--r-------
-- - --
--
--
--T--r--r-----1� 1Pe -UtT24-I--
36
34
---- --- --
- - ---1--1--L--1---'-----J--1--1--L_LuZ�_dJtlS�f�jC�
--
--
---
---- - - - ---
--
-- �r -�/p �� __ n
l_6Lr_
32
30
�i
,i
-------+--+--+--+----------+--+--+--+��11�11'reA�.�
--I �--�--r--r--i
--i---i---------�-Tj--r--��-F-i--�-ij-�-i--�A--T--ram-fir--
}iice
70 a�
28
--,-- -,--
Rtanoffyol4me=1. 'F-`"�'
26
24
- ---1--1--L----------J--1--
--'-- -'--.........
--------'--
--
--
-
--+--Rt� of�D rpt11T1671'--
3 22
°° 20
' I
i
--Ir- -li----7--r--r-----I---li--7--
I
-
I
I
+
I
-------
--
I
-----r--r----------r-CC-7--fi�r,,,,--yyr,�--
I I I
18
16
---- --- --
--'-- -'----1--1--L--1--------J--1--1--1--L--
--
--
-------------
--
- -�--------------------w-
--1---1---1--1-N�Lii--
14
--I-- —I-- --
--+--
--------I--+--+--+--+--+--
--------I----+--+-- --
12
10
--,--8
----J-1
--'------1--1--L--1---'-----J--1--1--L--L--L--------'--
--1--L--L641/
--+--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 67
Hydrograph for Subcatchment 14: BMP6
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.16
0.00
0.00
5.00
0.36
0.00
0.00
7.50
0.63
0.01
0.09
10.00
1.04
0.11
0.47
12.50
4.23
2.32
3.14
15.00
4.92
2.91
0.95
17.50
5.25
3.21
0.61
20.00
5.48
3.42
0.42
22.50
5.66
3.58
0.38
25.00
5.76
3.67
0.00
27.50
5.76
3.67
0.00
30.00
5.76
3.67
0.00
32.50
5.76
3.67
0.00
35.00
5.76
3.67
0.00
37.50
5.76
3.67
0.00
40.00
5.76
3.67
0.00
42.50
5.76
3.67
0.00
45.00
5.76
3.67
0.00
47.50
5.76
3.67
0.00
50.00
5.76
3.67
0.00
52.50
5.76
3.67
0.00
55.00
5.76
3.67
0.00
57.50
5.76
3.67
0.00
60.00
5.76
3.67
0.00
62.50
5.76
3.67
0.00
65.00
5.76
3.67
0.00
67.50
5.76
3.67
0.00
70.00
5.76
3.67
0.00
72.50
5.76
3.67
0.00
75.00
5.76
3.67
0.00
77.50
5.76
3.67
0.00
80.00
5.76
3.67
0.00
82.50
5.76
3.67
0.00
85.00
5.76
3.67
0.00
87.50
5.76
3.67
0.00
90.00
5.76
3.67
0.00
92.50
5.76
3.67
0.00
95.00
5.76
3.67
0.00
97.50
5.76
3.67
0.00
100.00
5.76
3.67
0.00
102.50
5.76
3.67
0.00
105.00
5.76
3.67
0.00
107.50
5.76
3.67
0.00
110.00
5.76
3.67
0.00
112.50
5.76
3.67
0.00
115.00
5.76
3.67
0.00
117.50
5.76
3.67
0.00
120.00
5.76
3.67
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 68
Summary for Subcatchment 15: BYP8
[49] Hint: Tc<2dt may require smaller dt
Runoff = 1.08 cfs @ 11.96 hrs, Volume= 0.051 af, Depth= 1.85"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-YR Rainfall=5.76"
Area (ac) CN Description
0.330 61 >75% Grass cover, Good, HSG B
0.330 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 15: BYP8
Hydrograph
� � �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I ■Runoff
1.08 cfs
- - - - - - 'TYPjPa�'�,-2* -'r-
1 25-YR RainfaillT5.761,
�Runbff A're,a=0.330 ad
RL;npff',VQIL;me=0.051 elf
Runoff Depth-1.85"
TcT5.0 Mid
CAN=61
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 69
Hydrograph for Subcatchment 15: BYP8
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.16
0.00
0.00
5.00
0.36
0.00
0.00
7.50
0.63
0.00
0.00
10.00
1.04
0.00
0.00
12.50
4.23
0.93
0.11
15.00
4.92
1.32
0.03
17.50
5.25
1.52
0.02
20.00
5.48
1.67
0.02
22.50
5.66
1.78
0.01
25.00
5.76
1.85
0.00
27.50
5.76
1.85
0.00
30.00
5.76
1.85
0.00
32.50
5.76
1.85
0.00
35.00
5.76
1.85
0.00
37.50
5.76
1.85
0.00
40.00
5.76
1.85
0.00
42.50
5.76
1.85
0.00
45.00
5.76
1.85
0.00
47.50
5.76
1.85
0.00
50.00
5.76
1.85
0.00
52.50
5.76
1.85
0.00
55.00
5.76
1.85
0.00
57.50
5.76
1.85
0.00
60.00
5.76
1.85
0.00
62.50
5.76
1.85
0.00
65.00
5.76
1.85
0.00
67.50
5.76
1.85
0.00
70.00
5.76
1.85
0.00
72.50
5.76
1.85
0.00
75.00
5.76
1.85
0.00
77.50
5.76
1.85
0.00
80.00
5.76
1.85
0.00
82.50
5.76
1.85
0.00
85.00
5.76
1.85
0.00
87.50
5.76
1.85
0.00
90.00
5.76
1.85
0.00
92.50
5.76
1.85
0.00
95.00
5.76
1.85
0.00
97.50
5.76
1.85
0.00
100.00
5.76
1.85
0.00
102.50
5.76
1.85
0.00
105.00
5.76
1.85
0.00
107.50
5.76
1.85
0.00
110.00
5.76
1.85
0.00
112.50
5.76
1.85
0.00
115.00
5.76
1.85
0.00
117.50
5.76
1.85
0.00
120.00
5.76
1.85
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 70
Summary for Subcatchment 18: BYP6
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.13 cfs @ 11.96 hrs, Volume= 0.006 af, Depth= 1.85"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 25-YR Rainfall=5.76"
Area (ac) CN Description
0.040 61 >75% Grass cover, Good, HSG B
0.040 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 18: BYP6
Hydrograph
0.14 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
-- 0.13 cfs J--1--L--L--1--L--L--1--L--1---1----L--L--1---1---1--L--+--L--1--
0.13+hr
0.12 ' 1 W p
- -- - -- T--------'-- -- T -- T--1---'-- -- -2J YR-Ralftfall. .77-611'-
RU
0.11 1 1 1
-I-- ---L--L--I I--L----+--L--1---1-- r11�#f-Afire =9. 40�c-
0.1 1 1 1 1 1 1 1
0.09 1 ngff 11Vgl�m�e=10.10 If
----1--1- -- --
-- 1 1 1 1 1 1 1 1 1 1
0.08 RU na$11Qepfh�1,85G'_
— — — — + — — — — 1— — —1— — —
0 0.07 �`}
LL --I--—T--T__T--T--__T--T--T--T-------T--T--T-----I— ,'c-.YII-h
0.06
--1----1---1--1---1---1---1---1---1--1---1---1-- ----- 1---1---1---1-- -CN=-61
0.05
0.04
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
0.03 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 --1-- -1----1--1---1---1---1---1---1--1---1---1---1---1--1---1---1---1---1--1---1----1--
0.02
--+- +--+--+--+--+-+--+--+--+--+--1--+--+--+--1---1---1--+--+--+--+-
0.01
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)
■ Runoff

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 71
Hydrograph for Subcatchment 18: BYP6
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.16
0.00
0.00
5.00
0.36
0.00
0.00
7.50
0.63
0.00
0.00
10.00
1.04
0.00
0.00
12.50
4.23
0.93
0.01
15.00
4.92
1.32
0.00
17.50
5.25
1.52
0.00
20.00
5.48
1.67
0.00
22.50
5.66
1.78
0.00
25.00
5.76
1.85
0.00
27.50
5.76
1.85
0.00
30.00
5.76
1.85
0.00
32.50
5.76
1.85
0.00
35.00
5.76
1.85
0.00
37.50
5.76
1.85
0.00
40.00
5.76
1.85
0.00
42.50
5.76
1.85
0.00
45.00
5.76
1.85
0.00
47.50
5.76
1.85
0.00
50.00
5.76
1.85
0.00
52.50
5.76
1.85
0.00
55.00
5.76
1.85
0.00
57.50
5.76
1.85
0.00
60.00
5.76
1.85
0.00
62.50
5.76
1.85
0.00
65.00
5.76
1.85
0.00
67.50
5.76
1.85
0.00
70.00
5.76
1.85
0.00
72.50
5.76
1.85
0.00
75.00
5.76
1.85
0.00
77.50
5.76
1.85
0.00
80.00
5.76
1.85
0.00
82.50
5.76
1.85
0.00
85.00
5.76
1.85
0.00
87.50
5.76
1.85
0.00
90.00
5.76
1.85
0.00
92.50
5.76
1.85
0.00
95.00
5.76
1.85
0.00
97.50
5.76
1.85
0.00
100.00
5.76
1.85
0.00
102.50
5.76
1.85
0.00
105.00
5.76
1.85
0.00
107.50
5.76
1.85
0.00
110.00
5.76
1.85
0.00
112.50
5.76
1.85
0.00
115.00
5.76
1.85
0.00
117.50
5.76
1.85
0.00
120.00
5.76
1.85
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 72
Summary for Pond 7: EX BMP6 - Dry Pond
Inflow Area = 4.780 ac, 16.74% Impervious, Inflow Depth = 2.71" for 25-YR event
Inflow = 23.31 cfs @ 11.96 hrs, Volume= 1.078 of
Outflow = 10.16 cfs @ 12.07 hrs, Volume= 1.078 af, Atten= 56%, Lag= 6.4 min
Primary = 10.16 cfs @ 12.07 hrs, Volume= 1.078 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 754.71' @ 12.07 hrs Surf.Area= 10,650 sf Storage= 13,231 cf
Plug -Flow detention time= 34.2 min calculated for 1.077 of (100% of inflow)
Center -of -Mass det. time= 35.2 min ( 868.9 - 833.7 )
Volume Invert
#1 753.00'
UM11.1ire
Description
65,286 cf Ex Volume - Design (Pyramidal)-isted below (Recalc)
Elevation
Surf.Area
Inc.Store Cum.Store Wet.Area
(feet)
(sq-ft)
(cubic -feet) (cubic -feet) (sq-ft)
753.00
3,100
0 0 3,100
754.00
9,600
6,052 6,052 9,607
756.00
12,700
22,228 28,280 12,820
758.00
16,100
28,733 57,012 16,352
758.50
17,000
8,274 65,286 17,288
Device Routing
Invert
Outlet Devices
#1 Primary
753.00'
24.0" Round RCP -Round 24"
L= 53.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 753.00' / 752.71' S= 0.0055'/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 3.14 sf
#2 Primary
754.00'
1.8" Vert. Orifice/Grate C= 0.600
#3 Primary
755.20'
13.3' long Sharp -Crested Rectangular Weir End Contraction(s)
Primary OutFlow Max=10.04 cfs @ 12.07 hrs HW=754.70' TW=0.00' (Dynamic Tailwater)
1=RCP_Round 24" (Barrel Controls 9.97 cfs @ 4.73 fps)
2=Orifice/Grate (Orifice Controls 0.07 cfs @ 3.79 fps)
3=Sharp-Crested Rectangular Weir( Controls 0.00 cfs)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 73
Pond 7: EX BMP6 - Dry Pond
Hyd rog raph
-
---r--r--r--r----r--r--r----r--r--r----r--r--
r-------r--r--r--I--
26 ■ Inflow
23.31 cfs II- r - r r -r r r r r I- - ❑ Primary
24 rl
1n1'i1��i�%'22--I - - - --I --I - - --I --I - - --� - Ppalk IBleV=54.71,
20 ---- --------------------- -------------------------------/+---
18 --'i---L--L-------L--L-----'-- --L----'�t�r-a+--'�4�Liz� \i-
,
I I I I I I I I I I I I I I I I I I I I I
16 --'-- - -------'-- -------'-- -- -- --'-- -- -------'-- -- -- --'--
y I I I I I I I I I I I I I I I I I I I I I
u 14 --I-- -+--r--I---I--+--r--r--I--+--+--r--I--+--+--r--I---I--+--r--r--I--
0 12 ---- ---r------- --r-- ------r--r------T--r---------r--Ir----
E 10.16 cfs i
i I I I I I I I I I I I I I I I I I I I I I I
10 -
I I I I I I I I I I I I I I I I I I I I I I I
--'-L--L-------L--L-----'-- --L--L--'--J--L--L--'-----L--L--+--'--
6 I I I I I I I I I I I I I I I I I I I I I
I I I I I I I I I I I I I I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 74
Hydrograph for Pond 7: EX BMP6 - Dry Pond
Time
Inflow
Storage
Elevation
Primary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
0.00
0.00
0
753.00
0.00
2.50
0.00
0
753.00
0.00
5.00
0.00
0
753.00
0.00
7.50
0.00
0
753.00
0.00
10.00
0.10
168
753.05
0.01
12.50
2.03
7,027
754.10
4.90
15.00
0.64
1,599
753.39
0.70
17.50
0.42
1,190
753.31
0.44
20.00
0.29
972
753.26
0.31
22.50
0.26
882
753.24
0.26
25.00
0.00
418
753.12
0.07
27.50
0.00
171
753.05
0.01
30.00
0.00
109
753.03
0.00
32.50
0.00
81
753.03
0.00
35.00
0.00
64
753.02
0.00
37.50
0.00
54
753.02
0.00
40.00
0.00
46
753.01
0.00
42.50
0.00
41
753.01
0.00
45.00
0.00
37
753.01
0.00
47.50
0.00
33
753.01
0.00
50.00
0.00
30
753.01
0.00
52.50
0.00
28
753.01
0.00
55.00
0.00
26
753.01
0.00
57.50
0.00
24
753.01
0.00
60.00
0.00
23
753.01
0.00
62.50
0.00
21
753.01
0.00
65.00
0.00
20
753.01
0.00
67.50
0.00
19
753.01
0.00
70.00
0.00
18
753.01
0.00
72.50
0.00
18
753.01
0.00
75.00
0.00
17
753.01
0.00
77.50
0.00
16
753.01
0.00
80.00
0.00
16
753.00
0.00
82.50
0.00
15
753.00
0.00
85.00
0.00
14
753.00
0.00
87.50
0.00
14
753.00
0.00
90.00
0.00
13
753.00
0.00
92.50
0.00
13
753.00
0.00
95.00
0.00
13
753.00
0.00
97.50
0.00
12
753.00
0.00
100.00
0.00
12
753.00
0.00
102.50
0.00
12
753.00
0.00
105.00
0.00
11
753.00
0.00
107.50
0.00
11
753.00
0.00
110.00
0.00
11
753.00
0.00
112.50
0.00
10
753.00
0.00
115.00
0.00
10
753.00
0.00
117.50
0.00
10
753.00
0.00
120.00
0.00
10
753.00
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 75
Stage -Area -Storage for Pond 7: EX BMP6 - Dry Pond
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
753.00
3,100
0
753.10
3,589
334
753.20
4,114
719
753.30
4,674
1,158
753.40
5,271
1,655
753.50
5,903
2,213
753.60
6,571
2,837
753.70
7,274
3,529
753.80
8,014
4,293
753.90
8,789
5,133
754.00
9,600
6,052
754.10
9,745
7,019
754.20
9,891
8,001
754.30
10,037
8,997
754.40
10,185
10,008
754.50
10,334
11,034
754.60
10,485
12,075
754.70
10,636
13,131
754.80
10,788
14,202
754.90
10,941
15,289
755.00
11,096
16,391
755.10
11,251
17,508
755.20
11,408
18,641
755.30
11,566
19,790
755.40
11,725
20,954
755.50
11,884
22,135
755.60
12,045
23,331
755.70
12,207
24,544
755.80
12,371
25,773
755.90
12,535
27,018
756.00
12,700
28,280
756.10
12,860
29,558
756.20
13,022
30,852
756.30
13,184
32,162
756.40
13,348
33,489
756.50
13,512
34,832
756.60
13,678
36,191
756.70
13,844
37,567
756.80
14,012
38,960
756.90
14,180
40,370
757.00
14,350
41,796
757.10
14,520
43,239
757.20
14,692
44,700
757.30
14,864
46,178
757.40
15,038
47,673
757.50
15,212
49,185
757.60
15,388
50,715
757.70
15,564
52,263
757.80
15,742
53,828
757.90
15,920
55,411
758.00
16,100
57,012
758.10
16,278
58,631
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
758.20
16,457
60,268
758.30
16,637
61,923
758.40
16,818
63,596
758.50
17,000
65,286

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 76
Summary for Pond 16: Prop Modified BMP 6 - Wet Pond
Inflow Area = 6.070 ac, 55.02% Impervious, Inflow Depth = 3.67" for 25-YR event
Inflow = 39.14 cfs @ 11.95 hrs, Volume= 1.854 of
Outflow = 9.31 cfs @ 12.11 hrs, Volume= 1.819 af, Atten= 76%, Lag= 9.4 min
Primary = 9.31 cfs @ 12.11 hrs, Volume= 1.819 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 757.14' @ 12.11 hrs Surf.Area= 14,787 sf Storage= 38,434 cf
Plug -Flow detention time= 709.4 min calculated for 1.818 of (98% of inflow)
Center -of -Mass det. time= 699.8 min ( 1,509.0 - 809.2 )
Volume Invert Avail.Storaae Storaae Description
#1
754.00'
68,712 cf Temporary Pool (Pyramidal)-isted below (Recalc)
Elevation
Surf.Area
Inc.Store
Cum.Store
Wet.Area
(feet)
(sq-ft)
(cubic -feet)
(cubic -feet)
(sq-ft)
754.00
8,870
0
0
8,870
755.00
11,632
10,220
10,220
11,661
759.00
17,834
58,492
68,712
18,157
Device
Routing
Invert
Outlet Devices
#1
Primary
754.00'
18.0" Round RCP -Round 18"
L= 14.3' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 754.00' / 753.68' S= 0.0224'/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.77 sf
#2
Device 1
754.00'
1.5" Vert. Orifice/Grate C= 0.600
#3
Device 1
755.60'
18.0" W x 27.0" H Vert. Orifice/Grate C= 0.600
#4
Device 1
757.85'
16.0' long Sharp -Crested Rectangular Weir End Contraction(s)
Primary OutFlow Max=9.26 cfs @ 12.11 hrs HW=757.13' TW=0.00' (Dynamic Tailwater)
L1=RCP_Round 18" (Passes 9.26 cfs of 13.14 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.10 cfs @ 8.44 fps)
3=Orifice/Grate (Orifice Controls 9.15 cfs @ 3.98 fps)
4=Sharp-Crested Rectangular Weir( Controls 0.00 cfs)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 77
Pond 16: Prop Modified BMP 6 - Wet Pond
Hyd rog raph
■ Inflow
42
39_14 cfs
1
Primary
40
--'-- - --
-----'-
- --
-
- - - -'-- --
-
IF flOW,AF a=6:,A-��, a,-ar -
38
36
— — — — — + —
--1----F--r--1---1--
— — — — —
— — — —
--r--
— + —
— I— — —I — — —
--1--;--T--F---1Ppk-El''
— +
— — — — I — — + — — + — — — —1— — —I — — + — — — — — — I — —
��=5��.'�'1' -
34
- - -
- -
-
- -
1
- - - - - - -
------- --------- -- --
32
�,-
--'-- - --
-----'--
--
-----'--
--
I 1 i 1
-- ---
StoM+q�=3&4a41
30
--1---r--r--1---1--r--r--r--1--r--r--r--1--r--r--
of
-1---1----r--r--1--
28
-
26
- --1--L--1-----1--L--1---1--
--1--L--1--J--1--L--1-----1--L--+--'--
y
u 24
--I-- -+--+--I---I--+--+--I---I--+--+--+--I--+--+--+--I---I--+--+--+--I--
3 22
--1--- -F -
- r-- ---I--
--r--
---- ;-
- T
---------- T----- ---I-- - - r-- - - - I--
° 20
- - -
- -
-
- -
- - - - - - -
LL
18
--I-- - --
-----I--
--
-----I--
--
-- --I-- --+-- -----I-- -- -- --I--
16
-7- ---r-------
--r--
------r--F----
--T----------F--r--F----
14
-- -
12
10
---- - --
9.31 cfs 1
—r--r--1---1--r--r--r--1--r--r--r--1--r--r--r--1---1--r--r--r--1--
-----'--
1 1
--
1 1
-----'--
1
--
1 1 1
1
-- --'-- -- -------'-- -- -- --'--
1 1 1 1 1 1 1 1 1 1 1
6
-- 1--L--1-----1--L--1---1--
--1--L--1--J--1--L--1-----1--L--+--'--
4
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 78
Hydrograph for Pond 16: Prop Modified BMP 6 - Wet Pond
Time
Inflow
Storage
Elevation
Primary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
0.00
0.00
0
754.00
0.00
2.50
0.00
0
754.00
0.00
5.00
0.00
0
754.00
0.00
7.50
0.09
200
754.02
0.00
10.00
0.47
2,248
754.24
0.03
12.50
3.14
33,730
756.82
6.57
15.00
0.95
22,492
755.99
1.28
17.50
0.61
20,733
755.86
0.71
20.00
0.42
19,947
755.80
0.50
22.50
0.38
19,535
755.77
0.40
25.00
0.00
18,514
755.68
0.19
27.50
0.00
17,490
755.60
0.07
30.00
0.00
16,835
755.55
0.07
32.50
0.00
16,193
755.50
0.07
35.00
0.00
15,561
755.45
0.07
37.50
0.00
14,941
755.40
0.07
40.00
0.00
14,333
755.35
0.07
42.50
0.00
13,736
755.30
0.07
45.00
0.00
13,151
755.25
0.06
47.50
0.00
12,578
755.20
0.06
50.00
0.00
12,016
755.15
0.06
52.50
0.00
11,467
755.11
0.06
55.00
0.00
10,930
755.06
0.06
57.50
0.00
10,404
755.02
0.06
60.00
0.00
9,891
754.97
0.06
62.50
0.00
9,390
754.93
0.05
65.00
0.00
8,902
754.89
0.05
67.50
0.00
8,426
754.84
0.05
70.00
0.00
7,962
754.80
0.05
72.50
0.00
7,512
754.76
0.05
75.00
0.00
7,074
754.72
0.05
77.50
0.00
6,650
754.68
0.05
80.00
0.00
6,238
754.64
0.04
82.50
0.00
5,840
754.60
0.04
85.00
0.00
5,456
754.57
0.04
87.50
0.00
5,085
754.53
0.04
90.00
0.00
4,727
754.50
0.04
92.50
0.00
4,384
754.46
0.04
95.00
0.00
4,055
754.43
0.04
97.50
0.00
3,740
754.40
0.03
100.00
0.00
3,439
754.37
0.03
102.50
0.00
3,152
754.34
0.03
105.00
0.00
2,880
754.31
0.03
107.50
0.00
2,622
754.28
0.03
110.00
0.00
2,380
754.26
0.03
112.50
0.00
2,152
754.23
0.02
115.00
0.00
1,939
754.21
0.02
117.50
0.00
1,741
754.19
0.02
120.00
0.00
1,558
754.17
0.02

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 79
Stage -Area -Storage for Pond 16: Prop Modified BMP 6 - Wet Pond
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
754.00
8,870
0
754.05
8,999
447
754.10
9,129
900
754.15
9,260
1,360
754.20
9,392
1,826
754.25
9,525
2,299
754.30
9,659
2,779
754.35
9,794
3,265
754.40
9,930
3,758
754.45
10,067
4,258
754.50
10,204
4,765
754.55
10,343
5,278
754.60
10,482
5,799
754.65
10,623
6,327
754.70
10,764
6,861
754.75
10,906
7,403
754.80
11,050
7,952
754.85
11,194
8,508
754.90
11,339
9,071
754.95
11,485
9,642
755.00
11,632
10,220
755.05
11,701
10,803
755.10
11,771
11,390
755.15
11,841
11,980
755.20
11,911
12,574
755.25
11,981
13,171
755.30
12,051
13,772
755.35
12,122
14,377
755.40
12,193
14,984
755.45
12,264
15,596
755.50
12,335
16,211
755.55
12,406
16,829
755.60
12,478
17,451
755.65
12,550
18,077
755.70
12,622
18,706
755.75
12,694
19,339
755.80
12,767
19,976
755.85
12,839
20,616
755.90
12,912
21,260
755.95
12,985
21,907
756.00
13,059
22,558
756.05
13,132
23,213
756.10
13,206
23,872
756.15
13,280
24,534
756.20
13,354
25,200
756.25
13,428
25,869
756.30
13,503
26,542
756.35
13,578
27,219
756.40
13,653
27,900
756.45
13,728
28,585
756.50
13,803
29,273
756.55
13,879
29,965
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
756.60
13,954
30,661
756.65
14,030
31,360
756.70
14,107
32,064
756.75
14,183
32,771
756.80
14,260
33,482
756.85
14,336
34,197
756.90
14,413
34,916
756.95
14,491
35,638
757.00
14,568
36,365
757.05
14,646
37,095
757.10
14,723
37,829
757.15
14,801
38,568
757.20
14,880
39,310
757.25
14,958
40,055
757.30
15,037
40,805
757.35
15,116
41,559
757.40
15,195
42,317
757.45
15,274
43,079
757.50
15,354
43,844
757.55
15,433
44,614
757.60
15,513
45,388
757.65
15,593
46,165
757.70
15,674
46,947
757.75
15,754
47,733
757.80
15,835
48,522
757.85
15,916
49,316
757.90
15,997
50,114
757.95
16,078
50,916
758.00
16,160
51,722
758.05
16,241
52,532
758.10
16,323
53,346
758.15
16,406
54,164
758.20
16,488
54,987
758.25
16,571
55,813
758.30
16,653
56,644
758.35
16,736
57,478
758.40
16,820
58,317
758.45
16,903
59,160
758.50
16,987
60,008
758.55
17,070
60,859
758.60
17,154
61,715
758.65
17,239
62,574
758.70
17,323
63,438
758.75
17,408
64,307
758.80
17,493
65,179
758.85
17,578
66,056
758.90
17,663
66,937
758.95
17,748
67,822
759.00
17,834
68,712

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 80
Summary for Pond 17: BMP 6 PP
[43] Hint: Has no inflow (Outflow=Zero)
Volume Invert Avail.Storaae Storaae Description
#1 748.00' 24,668 cf Permanent Pool (Prismatic)Listed below (Recalc)
#2 752.00' 3,859 cf Forebay (Prismatic)Listed below (Recalc)
28,527 cf Total Available Storage
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet)
(cubic -feet)
748.00
2,152
0
0
749.00
2,734
2,443
2,443
754.00
6,156
22,225
24,668
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet)
(cubic -feet)
752.00
1,145
0
0
754.00
2,714
3,859
3,859

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 81
Elevation
Storage
(feet)
(cubic -feet)
748.00
0
748.04
87
748.08
174
748.12
262
748.16
352
748.20
442
748.24
533
748.28
625
748.32
718
748.36
812
748.40
907
748.44
1,003
748.48
1,100
748.52
1,198
748.56
1,296
748.60
1,396
748.64
1,496
748.68
1,598
748.72
1,700
748.76
1,804
748.80
1,908
748.84
2,013
748.88
2,119
748.92
2,226
748.96
2,334
749.00
2,443
749.04
2,553
749.08
2,664
749.12
2,776
749.16
2,889
749.20
3,003
749.24
3,119
749.28
3,235
749.32
3,353
749.36
3,472
749.40
3,591
749.44
3,712
749.48
3,834
749.52
3,957
749.56
4,081
749.60
4,207
749.64
4,333
749.68
4,460
749.72
4,589
749.76
4,718
749.80
4,849
749.84
4,981
749.88
5,114
749.92
5,248
749.96
5,383
750.00
5,519
750.04
5,656
Stage -Area -Storage for Pond 17: BMP 6 PP
Elevation
Storage
(feet)
(cubic -feet)
750.08
5,795
750.12
5,934
750.16
6,075
750.20
6,217
750.24
6,359
750.28
6,503
750.32
6,648
750.36
6,794
750.40
6,941
750.44
7,090
750.48
7,239
750.52
7,389
750.56
7,541
750.60
7,693
750.64
7,847
750.68
8,002
750.72
8,158
750.76
8,315
750.80
8,473
750.84
8,632
750.88
8,792
750.92
8,954
750.96
9,116
751.00
9,280
751.04
9,444
751.08
9,610
751.12
9,777
751.16
9,945
751.20
10,114
751.24
10,284
751.28
10,455
751.32
10,628
751.36
10,801
751.40
10,976
751.44
11,151
751.48
11,328
751.52
11,506
751.56
11,685
751.60
11,865
751.64
12,046
751.68
12,228
751.72
12,411
751.76
12,596
751.80
12,781
751.84
12,968
751.88
13,155
751.92
13,344
751.96
13,534
752.00
13,725
752.04
13,963
752.08
14,204
752.12
14,447
Elevation
Storage
(feet)
(cubic -feet)
752.16
14,693
752.20
14,941
752.24
15,191
752.28
15,443
752.32
15,698
752.36
15,956
752.40
16,215
752.44
16,477
752.48
16,741
752.52
17,008
752.56
17,277
752.60
17,549
752.64
17,822
752.68
18,098
752.72
18,377
752.76
18,657
752.80
18,941
752.84
19,226
752.88
19,514
752.92
19,804
752.96
20,097
753.00
20,391
753.04
20,689
753.08
20,988
753.12
21,290
753.16
21,594
753.20
21,901
753.24
22,210
753.28
22,521
753.32
22,835
753.36
23,151
753.40
23,469
753.44
23,790
753.48
24,113
753.52
24,439
753.56
24,766
753.60
25,097
753.64
25,429
753.68
25,764
753.72
26,101
753.76
26,441
753.80
26,782
753.84
27,127
753.88
27,473
753.92
27,822
753.96
28,173
754.00
28,527

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 82
Summary for Link 9: Pre-Dev P0I-6
Inflow Area = 4.820 ac, 16.60% Impervious, Inflow Depth = 2.70" for 25-YR event
Inflow = 10.22 cfs @ 12.06 hrs, Volume= 1.084 of
Primary = 10.22 cfs @ 12.06 hrs, Volume= 1.084 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 9: Pre-Dev P0I-6
Hyd rog raph
�'I
---L--L-----'--
I I
I
I I
--L-----'--
I I
I
-- --L----J--L--L-------L--L--L--'--
I I I I
I I I I I I I I I I I
C Inflow
11
_ 10.22 cfs
---------------------------------------------------
- -'- - -' - -
❑Primary
10.22 cfs
I'nflo'nAr'ea=I-4.820
10
lac
r - -I -
9
--li
-rt--r--li---li--
--r--Ir--li--y--
+-
-Ir--li--y--+--Ir--li---li--rt--r--Ir-T-
8
--
-L--L-------L--L-----'--
-- --
--1--J--1--L--1-----L--L--L--'--
7
--
?--,
---------,
---------,
--,
-----I-- --,-------?--, --, --I--
y
V6
--I
I
rr-r--r--r
I I
I I
I
I I I I
--IrrrIrrrI-Irr-_rI--
I I I I I I I I I I I
3
I
I I
I I
I
I I I I
I I I I I I I I I I I
o
{� S
-------------+---------+--------+-----------1----I--
4
--
L--L--'---'--L--L--'---'--L--1--L--1--J--1--L--1-----L--L--L--'--
3
--
----------
----------
-------------
----------?----------
2
--
-T-------
--T--
------r--T----
--T--T-------T--T--Ir--

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 83
Hydrograph for Link 9: Pre-Dev P0I-6
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.00
0.00
0.00
5.00
0.00
0.00
0.00
7.50
0.00
0.00
0.00
10.00
0.01
0.00
0.01
12.50
4.91
0.00
4.91
15.00
0.71
0.00
0.71
17.50
0.44
0.00
0.44
20.00
0.31
0.00
0.31
22.50
0.27
0.00
0.27
25.00
0.07
0.00
0.07
27.50
0.01
0.00
0.01
30.00
0.00
0.00
0.00
32.50
0.00
0.00
0.00
35.00
0.00
0.00
0.00
37.50
0.00
0.00
0.00
40.00
0.00
0.00
0.00
42.50
0.00
0.00
0.00
45.00
0.00
0.00
0.00
47.50
0.00
0.00
0.00
50.00
0.00
0.00
0.00
52.50
0.00
0.00
0.00
55.00
0.00
0.00
0.00
57.50
0.00
0.00
0.00
60.00
0.00
0.00
0.00
62.50
0.00
0.00
0.00
65.00
0.00
0.00
0.00
67.50
0.00
0.00
0.00
70.00
0.00
0.00
0.00
72.50
0.00
0.00
0.00
75.00
0.00
0.00
0.00
77.50
0.00
0.00
0.00
80.00
0.00
0.00
0.00
82.50
0.00
0.00
0.00
85.00
0.00
0.00
0.00
87.50
0.00
0.00
0.00
90.00
0.00
0.00
0.00
92.50
0.00
0.00
0.00
95.00
0.00
0.00
0.00
97.50
0.00
0.00
0.00
100.00
0.00
0.00
0.00
102.50
0.00
0.00
0.00
105.00
0.00
0.00
0.00
107.50
0.00
0.00
0.00
110.00
0.00
0.00
0.00
112.50
0.00
0.00
0.00
115.00
0.00
0.00
0.00
117.50
0.00
0.00
0.00
120.00
0.00
0.00
0.00

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 84
Summary for Link 19: Post-Dev P0I-6
Inflow Area = 6.110 ac, 54.66% Impervious, Inflow Depth > 3.58" for 25-YR event
Inflow = 9.34 cfs @ 12.11 hrs, Volume= 1.825 of
Primary = 9.34 cfs @ 12.11 hrs, Volume= 1.825 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 19: Post-Dev P0I-6
Hyd rog raph
C Inflow
,'
9.34
cfs
❑ Primary
10
9.34 cfs
///I��� /7� (I
_ � _ _ � _ _ i _ _ _i _ _ . _ _ . _ _in ow r-- � � 6 � 1 0 '
9
--'
i
-'--'----- --' --'-------'--' --'--7--'--'--' 1---'--'--' --'---'-
-
— —1
+ — — — —1— — — — — — — + — — I— — —I — — — — + — — — — I — — + — — + — — — —1— — —I — — + — — — — — — I — —
7
I
I I I I I I I I I I I I I
r--r--I---I- r--r--i --I- r-- r--r--r-r-- r--r--I---I- r-- r--
r --I--
w 6
I
I
--'
I I I I I I I I I I I I I I I I I I I I I
J--L-----'----L-----'-- -- --L----J--J--L-------J--L--L--'--
30 5
--
T--T-----II----T-------1--T--Ir----1--7--Ir-------T--T--Ir--II--
LL
I I I I I I I I I I I I I I I I I I I I I
4
--'
1--L--1-----J--L-----'-- --J--L--'--J--1--L--1-----1--L--+--'--
3-
2-
11
--' 1-----'--'-------'--'--------------------'--'-----'--
1
0
0 5
10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 11 24-hr 25-YR Rainfall=5.76"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 85
Hydrograph for Link 19: Post-Dev P0I-6
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.00
0.00
0.00
5.00
0.00
0.00
0.00
7.50
0.00
0.00
0.00
10.00
0.03
0.00
0.03
12.50
6.58
0.00
6.58
15.00
1.28
0.00
1.28
17.50
0.72
0.00
0.72
20.00
0.50
0.00
0.50
22.50
0.40
0.00
0.40
25.00
0.19
0.00
0.19
27.50
0.07
0.00
0.07
30.00
0.07
0.00
0.07
32.50
0.07
0.00
0.07
35.00
0.07
0.00
0.07
37.50
0.07
0.00
0.07
40.00
0.07
0.00
0.07
42.50
0.07
0.00
0.07
45.00
0.06
0.00
0.06
47.50
0.06
0.00
0.06
50.00
0.06
0.00
0.06
52.50
0.06
0.00
0.06
55.00
0.06
0.00
0.06
57.50
0.06
0.00
0.06
60.00
0.06
0.00
0.06
62.50
0.05
0.00
0.05
65.00
0.05
0.00
0.05
67.50
0.05
0.00
0.05
70.00
0.05
0.00
0.05
72.50
0.05
0.00
0.05
75.00
0.05
0.00
0.05
77.50
0.05
0.00
0.05
80.00
0.04
0.00
0.04
82.50
0.04
0.00
0.04
85.00
0.04
0.00
0.04
87.50
0.04
0.00
0.04
90.00
0.04
0.00
0.04
92.50
0.04
0.00
0.04
95.00
0.04
0.00
0.04
97.50
0.03
0.00
0.03
100.00
0.03
0.00
0.03
102.50
0.03
0.00
0.03
105.00
0.03
0.00
0.03
107.50
0.03
0.00
0.03
110.00
0.03
0.00
0.03
112.50
0.02
0.00
0.02
115.00
0.02
0.00
0.02
117.50
0.02
0.00
0.02
120.00
0.02
0.00
0.02

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 86
Summary for Subcatchment 1: EX BYP1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 1.27 cfs @ 11.95 hrs, Volume= 0.064 af, Depth= 5.91"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-YR Rainfall=7.21"
Area (ac) CN
Description
0.100 98
Paved parking, HSG B
0.030 61
>75% Grass cover, Good, HSG B
0.130 89
Weighted Average
0.030
23.08% Pervious Area
0.100
76.92% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 1: EX BYP1
Hydrograph
I I II II II II II II II II II II II II II II II II II II II II II ❑Runoff
1.27 cfs
Ty; pe I I'I 2 -h r
100-YR RainfaiIIT7.21
1 �Rwnbff A'recl=0.1'30 ad
RLInpff'IVp1Ljme='10.064 Of
k6n6ff IDept'hT5.9111'
3 I I I I I I I I I I I I I I I I I I I
TcT5.'0 tnih
LL I I I I I I I I I I I I I I I I I I
CAN=89
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 87
Hydrograph for Subcatchment 1: EX BYP1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.20
0.00
0.00
5.00
0.45
0.03
0.00
7.50
0.79
0.16
0.01
10.00
1.31
0.49
0.03
12.50
5.30
4.06
0.09
15.00
6.15
4.88
0.03
17.50
6.57
5.29
0.02
20.00
6.86
5.58
0.01
22.50
7.09
5.79
0.01
25.00
7.21
5.91
0.00
27.50
7.21
5.91
0.00
30.00
7.21
5.91
0.00
32.50
7.21
5.91
0.00
35.00
7.21
5.91
0.00
37.50
7.21
5.91
0.00
40.00
7.21
5.91
0.00
42.50
7.21
5.91
0.00
45.00
7.21
5.91
0.00
47.50
7.21
5.91
0.00
50.00
7.21
5.91
0.00
52.50
7.21
5.91
0.00
55.00
7.21
5.91
0.00
57.50
7.21
5.91
0.00
60.00
7.21
5.91
0.00
62.50
7.21
5.91
0.00
65.00
7.21
5.91
0.00
67.50
7.21
5.91
0.00
70.00
7.21
5.91
0.00
72.50
7.21
5.91
0.00
75.00
7.21
5.91
0.00
77.50
7.21
5.91
0.00
80.00
7.21
5.91
0.00
82.50
7.21
5.91
0.00
85.00
7.21
5.91
0.00
87.50
7.21
5.91
0.00
90.00
7.21
5.91
0.00
92.50
7.21
5.91
0.00
95.00
7.21
5.91
0.00
97.50
7.21
5.91
0.00
100.00
7.21
5.91
0.00
102.50
7.21
5.91
0.00
105.00
7.21
5.91
0.00
107.50
7.21
5.91
0.00
110.00
7.21
5.91
0.00
112.50
7.21
5.91
0.00
115.00
7.21
5.91
0.00
117.50
7.21
5.91
0.00
120.00
7.21
5.91
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 88
Summary for Subcatchment 2: EX BMP3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 10.07 cfs @ 11.96 hrs, Volume= 0.466 af, Depth= 2.85"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-YR Rainfall=7.21"
Area (ac) CN Description
1.960 61 >75% Grass cover, Good, HSG B
1.960 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 2: EX BMP3
Hydrograph
-------- --,--,--,--,---------- ---------------------- ------,--
11 i i it it it it it it it it it it it it it it it it it it it it it ■Runoff
10.07 cfs---L--L--L--L--1--1---1--J--1--1--1--L--L--1---1---1--L--1--L--�--
10 'Type If 24-h'r
--
9 100-YR Rainfall:;7.21
Runoff A'rei�=1.960 ad
7 Runpff, VplL;m'e=0.460 clf
6 Runoff ,Depth= 2.'
85P'
3 - -- _
LL 5 -- -- -- - -- -- -- ---cT5.'0 Min
--r--
i--r--r--r--r--r--r--i--r--r--r--r--r--r--r--i---i--r-- r--r--
4N=6�
--- -- -- ------------ -- -- -- -- ------------ -- -- -- --
2
--'---'--�--1--1--L--1---1---1--J--1--1--1--L--L--1---1---1--L--1--L--L--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 89
Hydrograph for Subcatchment 2: EX BMP3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.20
0.00
0.00
5.00
0.45
0.00
0.00
7.50
0.79
0.00
0.00
10.00
1.31
0.00
0.00
12.50
5.30
1.55
0.92
15.00
6.15
2.11
0.29
17.50
6.57
2.40
0.19
20.00
6.86
2.60
0.13
22.50
7.09
2.76
0.12
25.00
7.21
2.85
0.00
27.50
7.21
2.85
0.00
30.00
7.21
2.85
0.00
32.50
7.21
2.85
0.00
35.00
7.21
2.85
0.00
37.50
7.21
2.85
0.00
40.00
7.21
2.85
0.00
42.50
7.21
2.85
0.00
45.00
7.21
2.85
0.00
47.50
7.21
2.85
0.00
50.00
7.21
2.85
0.00
52.50
7.21
2.85
0.00
55.00
7.21
2.85
0.00
57.50
7.21
2.85
0.00
60.00
7.21
2.85
0.00
62.50
7.21
2.85
0.00
65.00
7.21
2.85
0.00
67.50
7.21
2.85
0.00
70.00
7.21
2.85
0.00
72.50
7.21
2.85
0.00
75.00
7.21
2.85
0.00
77.50
7.21
2.85
0.00
80.00
7.21
2.85
0.00
82.50
7.21
2.85
0.00
85.00
7.21
2.85
0.00
87.50
7.21
2.85
0.00
90.00
7.21
2.85
0.00
92.50
7.21
2.85
0.00
95.00
7.21
2.85
0.00
97.50
7.21
2.85
0.00
100.00
7.21
2.85
0.00
102.50
7.21
2.85
0.00
105.00
7.21
2.85
0.00
107.50
7.21
2.85
0.00
110.00
7.21
2.85
0.00
112.50
7.21
2.85
0.00
115.00
7.21
2.85
0.00
117.50
7.21
2.85
0.00
120.00
7.21
2.85
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 90
Summary for Subcatchment 3: EX BYP3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 4.65 cfs @ 11.96 hrs, Volume= 0.215 af, Depth= 3.27"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-YR Rainfall=7.21"
Area (ac) CN Adi Description
0.190
98 Unconnected pavement, HSG B
0.600
61 >75% Grass cover, Good, HSG B
0.790
70 65 Weighted Average, UI Adjusted
0.600
75.95% Pervious Area
0.190
24.05% Impervious Area
0.190
100.00% Unconnected
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 3: EX BYP3
Hydrograph
5-
- ❑Runoff
4.65 cfs 1
ITy; pe I( 24-Il'r
4 1 1 I I I I I I I I I I I I I 1
�Rwnbff A're,�=0.790 ad
i--L-- J--1--1--Rttn-pff'IVQIVme=O.- 1$-4f-
w 3
k6noff DepthT3.2711'
3 I I I I I I I I I I I I I I I I I I I
LL 1
Tc"5.0 M i h
I I T--T--T--I --I— I— T--T--T--T--T--I_ — — I— T——T— —T — —T I I I
2 UJ A'djpsteo CN=65
1 I I I I I I I I I I I I I I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 91
Hydrograph for Subcatchment 3: EX BYP3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.20
0.00
0.00
5.00
0.45
0.00
0.00
7.50
0.79
0.00
0.00
10.00
1.31
0.01
0.02
12.50
5.30
1.86
0.41
15.00
6.15
2.46
0.13
17.50
6.57
2.78
0.08
20.00
6.86
3.00
0.06
22.50
7.09
3.17
0.05
25.00
7.21
3.27
0.00
27.50
7.21
3.27
0.00
30.00
7.21
3.27
0.00
32.50
7.21
3.27
0.00
35.00
7.21
3.27
0.00
37.50
7.21
3.27
0.00
40.00
7.21
3.27
0.00
42.50
7.21
3.27
0.00
45.00
7.21
3.27
0.00
47.50
7.21
3.27
0.00
50.00
7.21
3.27
0.00
52.50
7.21
3.27
0.00
55.00
7.21
3.27
0.00
57.50
7.21
3.27
0.00
60.00
7.21
3.27
0.00
62.50
7.21
3.27
0.00
65.00
7.21
3.27
0.00
67.50
7.21
3.27
0.00
70.00
7.21
3.27
0.00
72.50
7.21
3.27
0.00
75.00
7.21
3.27
0.00
77.50
7.21
3.27
0.00
80.00
7.21
3.27
0.00
82.50
7.21
3.27
0.00
85.00
7.21
3.27
0.00
87.50
7.21
3.27
0.00
90.00
7.21
3.27
0.00
92.50
7.21
3.27
0.00
95.00
7.21
3.27
0.00
97.50
7.21
3.27
0.00
100.00
7.21
3.27
0.00
102.50
7.21
3.27
0.00
105.00
7.21
3.27
0.00
107.50
7.21
3.27
0.00
110.00
7.21
3.27
0.00
112.50
7.21
3.27
0.00
115.00
7.21
3.27
0.00
117.50
7.21
3.27
0.00
120.00
7.21
3.27
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 92
Summary for Subcatchment 4: EX BYP5
[49] Hint: Tc<2dt may require smaller dt
Runoff = 2.59 cfs @ 11.96 hrs, Volume= 0.120 af, Depth= 3.27"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-YR Rainfall=7.21"
Area (ac) CN Adi Description
0.100
98 Unconnected pavement, HSG B
0.340
61 >75% Grass cover, Good, HSG B
0.440
69 65 Weighted Average, UI Adjusted
0.340
77.27% Pervious Area
0.100
22.73% Impervious Area
0.100
100.00% Unconnected
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 4: EX BYP5
Hydrograph
I I II II II II II II II II II II II II II II II II II II II II II ❑Runoff
2.59 cfs
ITy; pe 1( 24-1l'r
100-YR RainfaillT7.21
--r--I--r--r--r--r--r--I--r--r--r--r-- I---- r-- --
2 ;RWnb A;re�=0:440-a�-
RpnOffVQILjlme='10.�20f
Runoff IDepthT3.271'
3 I I I I I I I I I I I I I I I I I I I
LL I I I I I I I I I I I I I I I I I
TcT5.0 tnia
--I----I--�__1--r--I---I---I--J--1--1--r--r--I—J— — I— I
1 -Adi" — — e - 014=65-
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 93
Hydrograph for Subcatchment 4: EX BYP5
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.20
0.00
0.00
5.00
0.45
0.00
0.00
7.50
0.79
0.00
0.00
10.00
1.31
0.01
0.01
12.50
5.30
1.86
0.23
15.00
6.15
2.46
0.07
17.50
6.57
2.78
0.05
20.00
6.86
3.00
0.03
22.50
7.09
3.17
0.03
25.00
7.21
3.27
0.00
27.50
7.21
3.27
0.00
30.00
7.21
3.27
0.00
32.50
7.21
3.27
0.00
35.00
7.21
3.27
0.00
37.50
7.21
3.27
0.00
40.00
7.21
3.27
0.00
42.50
7.21
3.27
0.00
45.00
7.21
3.27
0.00
47.50
7.21
3.27
0.00
50.00
7.21
3.27
0.00
52.50
7.21
3.27
0.00
55.00
7.21
3.27
0.00
57.50
7.21
3.27
0.00
60.00
7.21
3.27
0.00
62.50
7.21
3.27
0.00
65.00
7.21
3.27
0.00
67.50
7.21
3.27
0.00
70.00
7.21
3.27
0.00
72.50
7.21
3.27
0.00
75.00
7.21
3.27
0.00
77.50
7.21
3.27
0.00
80.00
7.21
3.27
0.00
82.50
7.21
3.27
0.00
85.00
7.21
3.27
0.00
87.50
7.21
3.27
0.00
90.00
7.21
3.27
0.00
92.50
7.21
3.27
0.00
95.00
7.21
3.27
0.00
97.50
7.21
3.27
0.00
100.00
7.21
3.27
0.00
102.50
7.21
3.27
0.00
105.00
7.21
3.27
0.00
107.50
7.21
3.27
0.00
110.00
7.21
3.27
0.00
112.50
7.21
3.27
0.00
115.00
7.21
3.27
0.00
117.50
7.21
3.27
0.00
120.00
7.21
3.27
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 94
Summary for Subcatchment 5: EX BMP6
[49] Hint: Tc<2dt may require smaller dt
Runoff = 33.38 cfs @ 11.96 hrs, Volume= 1.554 af, Depth= 3.90"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-YR Rainfall=7.21"
Area (ac) CN
Adj
Description
0.800 98
Unconnected pavement, HSG B
3.980 69
50-75% Grass cover, Fair, HSG B
4.780 74
71
Weighted Average, UI Adjusted
3.980
83.26% Pervious Area
0.800
16.74% Impervious Area
0.800
100.00% Unconnected
Tc Length
Slope
Velocity Capacity Description
(min) (feet)
(ft/ft)
(ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 5: EX BMP6
Hydrograph
i I I I I I I I I I I I I I I I I I I I I I I I I ■Runoff
36--------'--
I 'I 3338 'I III --1III --1I --LI --I ---I ---I --J'I --LIII --LIII --1III--LI --+I --I ---I---I--LII
--1I --LI--L
32 .cfs -Yppr��= --Ir
30
A Yl:;--
-
I
28 -'-- --- -- --
26 'Runoff A're,�=4.780 ac
I I I I I I
24 '' --li ----;--7--r--r--i--------1 4--7p, np ffi-Vp1L�me=1 �$54 �-
R ��I V �,J •T � � � Y
^ 22 --r- ---r--r--r--r--r-------r--r--r--+--r--r--r-------r*--r--r--r--
20 Rux�Off IDeptly;1907 -
�- -7- ---r--r--+--r--r-------r--r--r--+--
a 16
----- IC-T+--5-.+'"- -+- -i
---+--+--+--+-++--+-- ---
14 / ---
'--- J--1---U�AdfljsteO4 =1+---
-
12
10,--I --
--
--'-- -'--L--1--1--L--1---'---'--J--L--L--1--L--L----------L--+--L--L--
8
6 �I
---- -------------------------------------------------------------
4
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 95
Hydrograph for Subcatchment 5: EX BMP6
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.20
0.00
0.00
5.00
0.45
0.00
0.00
7.50
0.79
0.00
0.00
10.00
1.31
0.05
0.26
12.50
5.30
2.35
2.80
15.00
6.15
3.02
0.86
17.50
6.57
3.37
0.56
20.00
6.86
3.61
0.38
22.50
7.09
3.80
0.35
25.00
7.21
3.90
0.00
27.50
7.21
3.90
0.00
30.00
7.21
3.90
0.00
32.50
7.21
3.90
0.00
35.00
7.21
3.90
0.00
37.50
7.21
3.90
0.00
40.00
7.21
3.90
0.00
42.50
7.21
3.90
0.00
45.00
7.21
3.90
0.00
47.50
7.21
3.90
0.00
50.00
7.21
3.90
0.00
52.50
7.21
3.90
0.00
55.00
7.21
3.90
0.00
57.50
7.21
3.90
0.00
60.00
7.21
3.90
0.00
62.50
7.21
3.90
0.00
65.00
7.21
3.90
0.00
67.50
7.21
3.90
0.00
70.00
7.21
3.90
0.00
72.50
7.21
3.90
0.00
75.00
7.21
3.90
0.00
77.50
7.21
3.90
0.00
80.00
7.21
3.90
0.00
82.50
7.21
3.90
0.00
85.00
7.21
3.90
0.00
87.50
7.21
3.90
0.00
90.00
7.21
3.90
0.00
92.50
7.21
3.90
0.00
95.00
7.21
3.90
0.00
97.50
7.21
3.90
0.00
100.00
7.21
3.90
0.00
102.50
7.21
3.90
0.00
105.00
7.21
3.90
0.00
107.50
7.21
3.90
0.00
110.00
7.21
3.90
0.00
112.50
7.21
3.90
0.00
115.00
7.21
3.90
0.00
117.50
7.21
3.90
0.00
120.00
7.21
3.90
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 96
Summary for Subcatchment 6: EX BYP8
[49] Hint: Tc<2dt may require smaller dt
Runoff = 9.56 cfs @ 11.96 hrs, Volume= 0.442 af, Depth= 2.85"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-YR Rainfall=7.21"
Area (ac) CN Description
1.860 61 >75% Grass cover, Good, HSG B
1.860 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 6: EX BYP8
Hydrograph
--'---'---'--�--1--1--L--1---'---'--J--1--1--L--L--L--'---'---'--�--1--L--�-- ■Runoff
10 9.56 cfs
--r—---y--rt--+--r--r------_�__rt__rt__t__r__r__r--iType-11i24—[W -
-- -- -?- - --?-- ---4 -Y- RciflnfallT7.21P'--
8
-- -'----1--1--L--1---'---'--J--1--1--,Runoff Arett=1'1-.860ar,-
7
w 6 11'
-�-- �-- � -- � -- �--�---�---�---�-- � -- � -- � --Run©-ff-�DepthT2.�5� --
LL S - - Tc= 5&O tnid
4 PN=61
-- ---
3
2
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 97
Hydrograph for Subcatchment 6: EX BYP8
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.20
0.00
0.00
5.00
0.45
0.00
0.00
7.50
0.79
0.00
0.00
10.00
1.31
0.00
0.00
12.50
5.30
1.55
0.88
15.00
6.15
2.11
0.28
17.50
6.57
2.40
0.18
20.00
6.86
2.60
0.13
22.50
7.09
2.76
0.12
25.00
7.21
2.85
0.00
27.50
7.21
2.85
0.00
30.00
7.21
2.85
0.00
32.50
7.21
2.85
0.00
35.00
7.21
2.85
0.00
37.50
7.21
2.85
0.00
40.00
7.21
2.85
0.00
42.50
7.21
2.85
0.00
45.00
7.21
2.85
0.00
47.50
7.21
2.85
0.00
50.00
7.21
2.85
0.00
52.50
7.21
2.85
0.00
55.00
7.21
2.85
0.00
57.50
7.21
2.85
0.00
60.00
7.21
2.85
0.00
62.50
7.21
2.85
0.00
65.00
7.21
2.85
0.00
67.50
7.21
2.85
0.00
70.00
7.21
2.85
0.00
72.50
7.21
2.85
0.00
75.00
7.21
2.85
0.00
77.50
7.21
2.85
0.00
80.00
7.21
2.85
0.00
82.50
7.21
2.85
0.00
85.00
7.21
2.85
0.00
87.50
7.21
2.85
0.00
90.00
7.21
2.85
0.00
92.50
7.21
2.85
0.00
95.00
7.21
2.85
0.00
97.50
7.21
2.85
0.00
100.00
7.21
2.85
0.00
102.50
7.21
2.85
0.00
105.00
7.21
2.85
0.00
107.50
7.21
2.85
0.00
110.00
7.21
2.85
0.00
112.50
7.21
2.85
0.00
115.00
7.21
2.85
0.00
117.50
7.21
2.85
0.00
120.00
7.21
2.85
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 98
Summary for Subcatchment 8: EX BYP6
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.21 cfs @ 11.96 hrs, Volume= 0.010 af, Depth= 2.85"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-YR Rainfall=7.21"
Area (ac) CN Description
0.040 61 >75% Grass cover, Good, HSG B
0.040 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 8: EX BYP6
Hydrograph
0.23
--'---'---'---'--'---'---'---'---'---'--'---'---'----------------------------'--
0.22
0.21
0.2
------- --
0.21 cfs
-----r--r--r--r--
--; - --,--
--
--;
--
--;
----
-----,--
--
--r--
--+---------
r-- r--r--r----r--r--r--r-----
-- --; --; --,--
-- ------------ --+-- ----
-- r - -+-- - r-
-- --; --;---�r
0.19
0.18
--'---J--L--L--
--r--r--r--r--r--i+--r--
--1--J--L--1--L--1---'--
--r--r--
r--i--r
- L----------'- L--+--L--'--
'�0Q-YR Raaftfall-7;7,2-1��-
0.17
--,-- --,--
-----------,--
----------,--
-- - -- -
0.15
Oro—
w0.13
-�� 0.12
--'----'----------------------------'--�
--'-- - --
--
--+--'--
--
--+--+-----'--
I\ulnl+Rla-�Depth�2.&5"-
0 0.11
a0.1
-- - - --
--------------------------------------------------1�?.Sl
----------
--
--T-- -- ----
-- --r-- ---�r
i�IJ_
0.09
0.08
�i
--+--+--+--+--+--+-+--+--+--+--+----+--+--+-----+-+--+-N�
---- - --
--r--r----
--
--7--r-------,--
Z
--r---------- - r -
0.07
�'
--'-- ---
--'
--------'--
-- --'-----'--
-- --
0.06
--'---J--L--L--L--1--J--1--1--L--1---'--
--L--L----------L--1--L--'--
0.05
�i
--r- r--r--r--r--i--r--r--+--r--r--i--r--r--+--r--i---i--r--+--r--r-
0.04
--------r--��
0.03
0.02
--'-- J--L--L--L--1--J--L--1--L--1---'--L--L--L----------L--+--L--'--
--r- r--r--r--r----r--r--+--r--r----r--r--+--r-------r--+--r--r-
0.01
0
0 5 10 15 20
25
30
35
40 45
50 55 60 65 70 75 80 85 90 95 160 165 110 115 120
Time (hours)
■ Runoff

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 99
Hydrograph for Subcatchment 8: EX BYP6
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.20
0.00
0.00
5.00
0.45
0.00
0.00
7.50
0.79
0.00
0.00
10.00
1.31
0.00
0.00
12.50
5.30
1.55
0.02
15.00
6.15
2.11
0.01
17.50
6.57
2.40
0.00
20.00
6.86
2.60
0.00
22.50
7.09
2.76
0.00
25.00
7.21
2.85
0.00
27.50
7.21
2.85
0.00
30.00
7.21
2.85
0.00
32.50
7.21
2.85
0.00
35.00
7.21
2.85
0.00
37.50
7.21
2.85
0.00
40.00
7.21
2.85
0.00
42.50
7.21
2.85
0.00
45.00
7.21
2.85
0.00
47.50
7.21
2.85
0.00
50.00
7.21
2.85
0.00
52.50
7.21
2.85
0.00
55.00
7.21
2.85
0.00
57.50
7.21
2.85
0.00
60.00
7.21
2.85
0.00
62.50
7.21
2.85
0.00
65.00
7.21
2.85
0.00
67.50
7.21
2.85
0.00
70.00
7.21
2.85
0.00
72.50
7.21
2.85
0.00
75.00
7.21
2.85
0.00
77.50
7.21
2.85
0.00
80.00
7.21
2.85
0.00
82.50
7.21
2.85
0.00
85.00
7.21
2.85
0.00
87.50
7.21
2.85
0.00
90.00
7.21
2.85
0.00
92.50
7.21
2.85
0.00
95.00
7.21
2.85
0.00
97.50
7.21
2.85
0.00
100.00
7.21
2.85
0.00
102.50
7.21
2.85
0.00
105.00
7.21
2.85
0.00
107.50
7.21
2.85
0.00
110.00
7.21
2.85
0.00
112.50
7.21
2.85
0.00
115.00
7.21
2.85
0.00
117.50
7.21
2.85
0.00
120.00
7.21
2.85
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 100
Summary for Subcatchment 10: BYP1
[49] Hint: Tc<2dt may require smaller dt
Runoff = 1.27 cfs @ 11.95 hrs, Volume= 0.064 af, Depth= 5.91"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-YR Rainfall=7.21"
Area (ac) CN
Description
0.100 98
Paved parking, HSG B
0.030 61
>75% Grass cover, Good, HSG B
0.130 89
Weighted Average
0.030
23.08% Pervious Area
0.100
76.92% Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 10: BYP1
Hydrograph
I I II II II II II II II II II II II II II II II II II II II II II ❑Runoff
1.27 cfs
Ty; pe I I'I 2 -h r
100-YR RainfaiIIT7.21
1 �Rwnbff A'recl=0.1'30 ad
RLInpff'IVp1Ljme='10.064 Of
k6n6ff IDept'hT5.9111'
3 I I I I I I I I I I I I I I I I I I I
TcT5.'0 tnih
LL I I I I I I I I I I I I I I I I I I
CAN=89
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 101
Hydrograph for Subcatchment 10: BYP1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.20
0.00
0.00
5.00
0.45
0.03
0.00
7.50
0.79
0.16
0.01
10.00
1.31
0.49
0.03
12.50
5.30
4.06
0.09
15.00
6.15
4.88
0.03
17.50
6.57
5.29
0.02
20.00
6.86
5.58
0.01
22.50
7.09
5.79
0.01
25.00
7.21
5.91
0.00
27.50
7.21
5.91
0.00
30.00
7.21
5.91
0.00
32.50
7.21
5.91
0.00
35.00
7.21
5.91
0.00
37.50
7.21
5.91
0.00
40.00
7.21
5.91
0.00
42.50
7.21
5.91
0.00
45.00
7.21
5.91
0.00
47.50
7.21
5.91
0.00
50.00
7.21
5.91
0.00
52.50
7.21
5.91
0.00
55.00
7.21
5.91
0.00
57.50
7.21
5.91
0.00
60.00
7.21
5.91
0.00
62.50
7.21
5.91
0.00
65.00
7.21
5.91
0.00
67.50
7.21
5.91
0.00
70.00
7.21
5.91
0.00
72.50
7.21
5.91
0.00
75.00
7.21
5.91
0.00
77.50
7.21
5.91
0.00
80.00
7.21
5.91
0.00
82.50
7.21
5.91
0.00
85.00
7.21
5.91
0.00
87.50
7.21
5.91
0.00
90.00
7.21
5.91
0.00
92.50
7.21
5.91
0.00
95.00
7.21
5.91
0.00
97.50
7.21
5.91
0.00
100.00
7.21
5.91
0.00
102.50
7.21
5.91
0.00
105.00
7.21
5.91
0.00
107.50
7.21
5.91
0.00
110.00
7.21
5.91
0.00
112.50
7.21
5.91
0.00
115.00
7.21
5.91
0.00
117.50
7.21
5.91
0.00
120.00
7.21
5.91
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 102
Summary for Subcatchment 11: BMP3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 16.00 cfs @ 11.96 hrs, Volume= 0.748 af, Depth= 4.12"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-YR Rainfall=7.21"
Area (ac) CN
Description
0.690 98
Unconnected roofs, HSG B
1.490 61
>75% Grass cover, Good, HSG B
2.180 73
Weighted Average
1.490
68.35% Pervious Area
0.690
31.65% Impervious Area
0.690
100.00% Unconnected
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 11: BMP3
Hydrograph
--1---1---1-- -- -- + --,------------- -- -- - -+ --r- -- -- + --r -- ■Runoff
17 1 1 11 1 1 1 1 11 1 1 1
_— 16.00cfs _1--r--r--r--r__r--r--1--r--r--r--r--r--r--1---1---1--r--r--r--r--
16 Type -Ili 24-11r -
15 --'-- -'----L--L--L--'---'---'--J--L--L--L--L--L--1---1----1--L--L--L--L--
14 100-YR Rainfall=;7.21"
13 r�
---- --- ------- r------------- ----TRun6ffArett-2.'8-0 a _
12
-- T--T--r-- r--IR nOff V_Ql1m'11 7 _14$-�f -
11 _1-- -1--+--+--+--r--1---1---1--+--+--+-
u 10 --1-- -1-- -- --L----1---1---1----'--'--+---
-RanofflDepth 4 21'
3 9 --'---'--L--L--L--L--'--------J--L--L--L--L__L--'---'-- 1--L L- L --L
-
-
o , 1 - //►►y - 1A-
LL $ --I-- —I-- L-- __ -- L--L-------L-- L -- L -- L -- L--L--L—L--�SLT��Q _lIJ ILL_
7
6
--I —
5 --I------------+--+--+__+__+__r----------+--+--
� I
4 --1-- -1-- -- --L----1---1---1-- -- ----+--L----1---1---1----+--L-- --
3 --'-- -'--L--L--L--L--'---'---'--J--L--L--L--L--L--1---1---1--L--L--L--r--
2
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 103
Hydrograph for Subcatchment 11: BMP3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.20
0.00
0.00
5.00
0.45
0.00
0.00
7.50
0.79
0.00
0.01
10.00
1.31
0.07
0.15
12.50
5.30
2.52
1.32
15.00
6.15
3.22
0.40
17.50
6.57
3.57
0.26
20.00
6.86
3.82
0.18
22.50
7.09
4.01
0.16
25.00
7.21
4.12
0.00
27.50
7.21
4.12
0.00
30.00
7.21
4.12
0.00
32.50
7.21
4.12
0.00
35.00
7.21
4.12
0.00
37.50
7.21
4.12
0.00
40.00
7.21
4.12
0.00
42.50
7.21
4.12
0.00
45.00
7.21
4.12
0.00
47.50
7.21
4.12
0.00
50.00
7.21
4.12
0.00
52.50
7.21
4.12
0.00
55.00
7.21
4.12
0.00
57.50
7.21
4.12
0.00
60.00
7.21
4.12
0.00
62.50
7.21
4.12
0.00
65.00
7.21
4.12
0.00
67.50
7.21
4.12
0.00
70.00
7.21
4.12
0.00
72.50
7.21
4.12
0.00
75.00
7.21
4.12
0.00
77.50
7.21
4.12
0.00
80.00
7.21
4.12
0.00
82.50
7.21
4.12
0.00
85.00
7.21
4.12
0.00
87.50
7.21
4.12
0.00
90.00
7.21
4.12
0.00
92.50
7.21
4.12
0.00
95.00
7.21
4.12
0.00
97.50
7.21
4.12
0.00
100.00
7.21
4.12
0.00
102.50
7.21
4.12
0.00
105.00
7.21
4.12
0.00
107.50
7.21
4.12
0.00
110.00
7.21
4.12
0.00
112.50
7.21
4.12
0.00
115.00
7.21
4.12
0.00
117.50
7.21
4.12
0.00
120.00
7.21
4.12
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 104
Summary for Subcatchment 12: BYP3
[49] Hint: Tc<2dt may require smaller dt
Runoff = 6.01 cfs @ 11.95 hrs, Volume= 0.295 af, Depth= 5.45"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-YR Rainfall=7.21"
Area (ac) CN
Description
0.420 98
Unconnected pavement, HSG B
0.230 61
>75% Grass cover, Good, HSG B
0.650 85
Weighted Average
0.230
35.38% Pervious Area
0.420
64.62% Impervious Area
0.420
100.00% Unconnected
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 12: BYP3
Hydrograph
� � � � � � � � � � � � � � � � � � � � � � � ❑Runoff
6.01 cfs ---+--+--+----------+--+--+--+--+-------+--+ +--+--i---i---i--
6 �TYpe 1(24-hr
-- -- ----1-0G-YR-FZain#AN=�7.20tP'-
5
Rwnbff A're,a=0.650 ac
- - - R4n-pffVg1p mew .�9 -clf -
4
Runoff �DepthT5.451'
3 Tc"5.'0 to i h
z
--r- --i--r--r--r--r--r--i--r--r--r--r--r--r--i--r--r--r--r--r--i---i--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 105
Hydrograph for Subcatchment 12: BYP3
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.20
0.00
0.00
5.00
0.45
0.01
0.01
7.50
0.79
0.09
0.03
10.00
1.31
0.33
0.10
12.50
5.30
3.65
0.46
15.00
6.15
4.45
0.14
17.50
6.57
4.85
0.09
20.00
6.86
5.12
0.06
22.50
7.09
5.34
0.05
25.00
7.21
5.45
0.00
27.50
7.21
5.45
0.00
30.00
7.21
5.45
0.00
32.50
7.21
5.45
0.00
35.00
7.21
5.45
0.00
37.50
7.21
5.45
0.00
40.00
7.21
5.45
0.00
42.50
7.21
5.45
0.00
45.00
7.21
5.45
0.00
47.50
7.21
5.45
0.00
50.00
7.21
5.45
0.00
52.50
7.21
5.45
0.00
55.00
7.21
5.45
0.00
57.50
7.21
5.45
0.00
60.00
7.21
5.45
0.00
62.50
7.21
5.45
0.00
65.00
7.21
5.45
0.00
67.50
7.21
5.45
0.00
70.00
7.21
5.45
0.00
72.50
7.21
5.45
0.00
75.00
7.21
5.45
0.00
77.50
7.21
5.45
0.00
80.00
7.21
5.45
0.00
82.50
7.21
5.45
0.00
85.00
7.21
5.45
0.00
87.50
7.21
5.45
0.00
90.00
7.21
5.45
0.00
92.50
7.21
5.45
0.00
95.00
7.21
5.45
0.00
97.50
7.21
5.45
0.00
100.00
7.21
5.45
0.00
102.50
7.21
5.45
0.00
105.00
7.21
5.45
0.00
107.50
7.21
5.45
0.00
110.00
7.21
5.45
0.00
112.50
7.21
5.45
0.00
115.00
7.21
5.45
0.00
117.50
7.21
5.45
0.00
120.00
7.21
5.45
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 106
Summary for Subcatchment 13: BYP5
[49] Hint: Tc<2dt may require smaller dt
Runoff = 2.20 cfs @ 11.96 hrs, Volume= 0.103 af, Depth= 4.12"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-YR Rainfall=7.21"
Area (ac) CN
Description
0.100 98
Unconnected pavement, HSG B
0.200 61
>75% Grass cover, Good, HSG B
0.300 73
Weighted Average
0.200
66.67% Pervious Area
0.100
33.33% Impervious Area
0.100
100.00% Unconnected
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
5.0
Direct Entry,
Subcatchment 13: BYP5
Hydrograph
� � �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I �I ❑Runoff
2.20 cfs
-- -- --+-- -- -- --+-- --' -- --+Type, If24
2 100-YR RainfaillT7.�21
�Rwnbff Area=0.300 ac
RLjnpff'IVQILjme='10.'10$ elf
k6n6ff Dept'hT4.121"
LL--I_----7--Y--Y--_-------7--rt--t--Y--r--I_----7--Y—�I�IO- �'��II
1 I I I I I I I I I I I I I I I I I I I
PN=7$
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 107
Hydrograph for Subcatchment 13: BYP5
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.20
0.00
0.00
5.00
0.45
0.00
0.00
7.50
0.79
0.00
0.00
10.00
1.31
0.07
0.02
12.50
5.30
2.52
0.18
15.00
6.15
3.22
0.06
17.50
6.57
3.57
0.04
20.00
6.86
3.82
0.02
22.50
7.09
4.01
0.02
25.00
7.21
4.12
0.00
27.50
7.21
4.12
0.00
30.00
7.21
4.12
0.00
32.50
7.21
4.12
0.00
35.00
7.21
4.12
0.00
37.50
7.21
4.12
0.00
40.00
7.21
4.12
0.00
42.50
7.21
4.12
0.00
45.00
7.21
4.12
0.00
47.50
7.21
4.12
0.00
50.00
7.21
4.12
0.00
52.50
7.21
4.12
0.00
55.00
7.21
4.12
0.00
57.50
7.21
4.12
0.00
60.00
7.21
4.12
0.00
62.50
7.21
4.12
0.00
65.00
7.21
4.12
0.00
67.50
7.21
4.12
0.00
70.00
7.21
4.12
0.00
72.50
7.21
4.12
0.00
75.00
7.21
4.12
0.00
77.50
7.21
4.12
0.00
80.00
7.21
4.12
0.00
82.50
7.21
4.12
0.00
85.00
7.21
4.12
0.00
87.50
7.21
4.12
0.00
90.00
7.21
4.12
0.00
92.50
7.21
4.12
0.00
95.00
7.21
4.12
0.00
97.50
7.21
4.12
0.00
100.00
7.21
4.12
0.00
102.50
7.21
4.12
0.00
105.00
7.21
4.12
0.00
107.50
7.21
4.12
0.00
110.00
7.21
4.12
0.00
112.50
7.21
4.12
0.00
115.00
7.21
4.12
0.00
117.50
7.21
4.12
0.00
120.00
7.21
4.12
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 108
Summary for Subcatchment 14: BMP6
[49] Hint: Tc<2dt may require smaller dt
Runoff = 52.57 cfs @ 11.95 hrs, Volume= 2.530 af, Depth= 5.00"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-YR Rainfall=7.21"
Area (ac) CN Description
3.340 98 Impervious Areas, HSG B
2.730 61 >75% Grass cover, Good, HSG B
6.070 81 Weighted Average
2.730 44.98% Pervious Area
3.340 55.02% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 14: BMP6
Hydrograph
--'---'---'--�--1--1--L--1---'---'--J--1--1--L--L--L--'---'---'--�--+--L--�-- ■Runoff
55 1 52.57 cfs 1
----
50 -�---- -- -- --�,--------�-- -- -- -- --�,-----,�Y�S-C1'1 2 _�`-
----rt--fi--r------------------ 0�0=Y1RReinfatlT7-.21��-
45 �� I I I I I I I I I I I I I I 1
40
35 I
R-pnpff qm�e=2. $-30- # -
w --r- -i-- ----r--r--r-----i-- -- -- --T-{}4-
30 1 -Run
LL 25
--I--11111__ 1_— 1—_1--1--1___ 1--------1—C�NI 81—_
20
---- ---
15
10
5
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 109
Hydrograph for Subcatchment 14: BMP6
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.20
0.00
0.00
5.00
0.45
0.00
0.00
7.50
0.79
0.04
0.20
10.00
1.31
0.22
0.77
12.50
5.30
3.25
4.12
15.00
6.15
4.02
1.23
17.50
6.57
4.41
0.79
20.00
6.86
4.68
0.54
22.50
7.09
4.89
0.48
25.00
7.21
5.00
0.00
27.50
7.21
5.00
0.00
30.00
7.21
5.00
0.00
32.50
7.21
5.00
0.00
35.00
7.21
5.00
0.00
37.50
7.21
5.00
0.00
40.00
7.21
5.00
0.00
42.50
7.21
5.00
0.00
45.00
7.21
5.00
0.00
47.50
7.21
5.00
0.00
50.00
7.21
5.00
0.00
52.50
7.21
5.00
0.00
55.00
7.21
5.00
0.00
57.50
7.21
5.00
0.00
60.00
7.21
5.00
0.00
62.50
7.21
5.00
0.00
65.00
7.21
5.00
0.00
67.50
7.21
5.00
0.00
70.00
7.21
5.00
0.00
72.50
7.21
5.00
0.00
75.00
7.21
5.00
0.00
77.50
7.21
5.00
0.00
80.00
7.21
5.00
0.00
82.50
7.21
5.00
0.00
85.00
7.21
5.00
0.00
87.50
7.21
5.00
0.00
90.00
7.21
5.00
0.00
92.50
7.21
5.00
0.00
95.00
7.21
5.00
0.00
97.50
7.21
5.00
0.00
100.00
7.21
5.00
0.00
102.50
7.21
5.00
0.00
105.00
7.21
5.00
0.00
107.50
7.21
5.00
0.00
110.00
7.21
5.00
0.00
112.50
7.21
5.00
0.00
115.00
7.21
5.00
0.00
117.50
7.21
5.00
0.00
120.00
7.21
5.00
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 110
Summary for Subcatchment 15: BYP8
[49] Hint: Tc<2dt may require smaller dt
Runoff = 1.70 cfs @ 11.96 hrs, Volume= 0.078 af, Depth= 2.85"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-YR Rainfall=7.21"
Area (ac) CN Description
0.330 61 >75% Grass cover, Good, HSG B
0.330 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 15: BYP8
Hyd rog raph
I I II II II II II II II II II II II II II II II II I II II II II ❑Runoff
1.70 cfs
ITypQ I( 24-Il'r
100-YR RainfaillT7.21
�Runbff Area=0.330 ac
ROnOff'IVQIL;m'le='10.$7$ elf
______________+--____I___I__�__1__1__�__I___I___I__
1 Rulnoff DepthT2.651'
TcT5.0 Mid
CAN=61
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 111
Hydrograph for Subcatchment 15: BYP8
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.20
0.00
0.00
5.00
0.45
0.00
0.00
7.50
0.79
0.00
0.00
10.00
1.31
0.00
0.00
12.50
5.30
1.55
0.16
15.00
6.15
2.11
0.05
17.50
6.57
2.40
0.03
20.00
6.86
2.60
0.02
22.50
7.09
2.76
0.02
25.00
7.21
2.85
0.00
27.50
7.21
2.85
0.00
30.00
7.21
2.85
0.00
32.50
7.21
2.85
0.00
35.00
7.21
2.85
0.00
37.50
7.21
2.85
0.00
40.00
7.21
2.85
0.00
42.50
7.21
2.85
0.00
45.00
7.21
2.85
0.00
47.50
7.21
2.85
0.00
50.00
7.21
2.85
0.00
52.50
7.21
2.85
0.00
55.00
7.21
2.85
0.00
57.50
7.21
2.85
0.00
60.00
7.21
2.85
0.00
62.50
7.21
2.85
0.00
65.00
7.21
2.85
0.00
67.50
7.21
2.85
0.00
70.00
7.21
2.85
0.00
72.50
7.21
2.85
0.00
75.00
7.21
2.85
0.00
77.50
7.21
2.85
0.00
80.00
7.21
2.85
0.00
82.50
7.21
2.85
0.00
85.00
7.21
2.85
0.00
87.50
7.21
2.85
0.00
90.00
7.21
2.85
0.00
92.50
7.21
2.85
0.00
95.00
7.21
2.85
0.00
97.50
7.21
2.85
0.00
100.00
7.21
2.85
0.00
102.50
7.21
2.85
0.00
105.00
7.21
2.85
0.00
107.50
7.21
2.85
0.00
110.00
7.21
2.85
0.00
112.50
7.21
2.85
0.00
115.00
7.21
2.85
0.00
117.50
7.21
2.85
0.00
120.00
7.21
2.85
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 112
Summary for Subcatchment 18: BYP6
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.21 cfs @ 11.96 hrs, Volume= 0.010 af, Depth= 2.85"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 100-YR Rainfall=7.21"
Area (ac) CN Description
0.040 61 >75% Grass cover, Good, HSG B
0.040 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 18: BYP6
Hydrograph
0.23
-- ---- --
--'---'---'---'--'---'---'---'---'---'--'---'---'----------------------------'--
--r--
----
-- --+-- ---------
--r-----------+--r-- -
0.22
0.21
0.2
------- --
0.21 cfs
-----r--r--r--r--
--; - --,--
--
--;
--
--;
----
-----,--
-- --+---------
--r--r-- r-- r--r-
-- --; --; --,--
-- ------------ --+-- ----
---r--r--r--r-------r--+-- - r-
-- --' --; -- -H 2.4-
0.19
0.18
--'---J--L--L--
--r-- r--r--r--r--i--r--r--+--r--
--1--J--L--1--L--1---'--
r--i--r
- 1---p-------'- 1--+--L--'--
�00- I WR-RaIrtfaII�7-� A F,�-
0.17
--,-- --,--
-----------,--
----------,--
-- - -- -
0.15
0.14
--+--+--+--+--+--+-+--+--+--+--+
--,-- --,--
-----------,--
---------ff'�4����-O
+ -+ +r-+-+- +
w0.13
-�� 0.12
--'----'----------------------------'--�
--'-- - --
--
--+--'--
----+--+-----'--
I\ulnl+Rla-�epth=2.&5"-
0 0.11
a0.1
-- - - --
--------------------------------------------------1�?.Sl
----------
-- --T-- -- ----
-- --r-- ---�r
i�IJ_
0.09
0.08
�i
--+--+--+--+--+--+-+--+--+--+--+----+--+--+-----+-+--+-N�
---- - --
--r--r----
----7--r-------,--
Z
--r---------- - r -
0.07
�'
--'-- ---
--'
--------'--
-- --'-----'--
-- --
0.06
--'---J--L--L--L--1--J--1--1--L--1---'--
--L--L----------L--1--L--'--
0.05
�i
--r- r--r--r--r--i--r--r--+--r--r--i--r--r--+--r--i---i--r--+--r--r-
0.04
--------r--��
0.03
0.02
--'-- J--L--L--L--1--J--L--1--L--1---'--L--L--L----------L--+--L--'--
--r- r--r--r--r----r--r--+--r--r----r--r--+--r-------r--+--r--r-
0.01
0
0 5 10 15 20
25
30
35
40 45 50 55 60 65 70 75 80 85 90 95 160 165 110 115 120
Time (hours)
■ Runoff

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 113
Hydrograph for Subcatchment 18: BYP6
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.20
0.00
0.00
5.00
0.45
0.00
0.00
7.50
0.79
0.00
0.00
10.00
1.31
0.00
0.00
12.50
5.30
1.55
0.02
15.00
6.15
2.11
0.01
17.50
6.57
2.40
0.00
20.00
6.86
2.60
0.00
22.50
7.09
2.76
0.00
25.00
7.21
2.85
0.00
27.50
7.21
2.85
0.00
30.00
7.21
2.85
0.00
32.50
7.21
2.85
0.00
35.00
7.21
2.85
0.00
37.50
7.21
2.85
0.00
40.00
7.21
2.85
0.00
42.50
7.21
2.85
0.00
45.00
7.21
2.85
0.00
47.50
7.21
2.85
0.00
50.00
7.21
2.85
0.00
52.50
7.21
2.85
0.00
55.00
7.21
2.85
0.00
57.50
7.21
2.85
0.00
60.00
7.21
2.85
0.00
62.50
7.21
2.85
0.00
65.00
7.21
2.85
0.00
67.50
7.21
2.85
0.00
70.00
7.21
2.85
0.00
72.50
7.21
2.85
0.00
75.00
7.21
2.85
0.00
77.50
7.21
2.85
0.00
80.00
7.21
2.85
0.00
82.50
7.21
2.85
0.00
85.00
7.21
2.85
0.00
87.50
7.21
2.85
0.00
90.00
7.21
2.85
0.00
92.50
7.21
2.85
0.00
95.00
7.21
2.85
0.00
97.50
7.21
2.85
0.00
100.00
7.21
2.85
0.00
102.50
7.21
2.85
0.00
105.00
7.21
2.85
0.00
107.50
7.21
2.85
0.00
110.00
7.21
2.85
0.00
112.50
7.21
2.85
0.00
115.00
7.21
2.85
0.00
117.50
7.21
2.85
0.00
120.00
7.21
2.85
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 114
Summary for Pond 7: EX BMP6 - Dry Pond
Inflow Area = 4.780 ac, 16.74% Impervious, Inflow Depth = 3.90" for 100-YR event
Inflow = 33.38 cfs @ 11.96 hrs, Volume= 1.554 of
Outflow = 14.85 cfs @ 12.06 hrs, Volume= 1.554 af, Atten= 56%, Lag= 6.2 min
Primary = 14.85 cfs @ 12.06 hrs, Volume= 1.554 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 755.23' @ 12.06 hrs Surf.Area= 11,453 sf Storage= 18,964 cf
Plug -Flow detention time= 32.3 min calculated for 1.554 of (100% of inflow)
Center -of -Mass det. time= 31.8 min ( 855.0 - 823.2 )
Volume Invert
#1 753.00'
UM11.1ire
Description
65,286 cf Ex Volume - Design (Pyramidal)-isted below (Recalc)
Elevation
Surf.Area
Inc.Store Cum.Store Wet.Area
(feet)
(sq-ft)
(cubic -feet) (cubic -feet) (sq-ft)
753.00
3,100
0 0 3,100
754.00
9,600
6,052 6,052 9,607
756.00
12,700
22,228 28,280 12,820
758.00
16,100
28,733 57,012 16,352
758.50
17,000
8,274 65,286 17,288
Device Routing
Invert
Outlet Devices
#1 Primary
753.00'
24.0" Round RCP -Round 24"
L= 53.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 753.00' / 752.71' S= 0.0055'/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 3.14 sf
#2 Primary
754.00'
1.8" Vert. Orifice/Grate C= 0.600
#3 Primary
755.20'
13.3' long Sharp -Crested Rectangular Weir End Contraction(s)
Primary OutFlow Max=14.65 cfs @ 12.06 hrs HW=755.21' TW=0.00' (Dynamic Tailwater)
1=RCP_Round 24" (Barrel Controls 14.49 cfs @ 5.20 fps)
2=Orifice/Grate (Orifice Controls 0.09 cfs @ 5.14 fps)
3=Sharp-Crested Rectangular Weir(Weir Controls 0.07 cfs @ 0.38 fps)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 115
Pond 7: EX BMP6 - Dry Pond
Hyd rog raph
■ Inflow
36
'
------+--+-------+--+-------+--+--+----+--+--+-------+--+--+----
33.38 cfs
❑Prima
Primary
34
32
30
— — — — — + —
— — — — —
— — — —
— —
— — — — — — —
I
— +
— — + — 1 + 1— 1F —
-_ E1ev�=5:
26
----- --
-------+--+-------+--+--+----+--+-
- �7d1 A�= IO �64 lil
-�----_+�_-+--+cf
24
22
20
3 18
o
,'
-----+--+-------+--+-------+--+--+----+--+--+-------+--+--+--�--
LL 16
14. 15 cfs
14
--—+---------+--+-------+--+--+----+--+--+-------+--+--+--�--
12
10
--
8
6
4
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 116
Hydrograph for Pond 7: EX BMP6 - Dry Pond
Time
Inflow
Storage
Elevation
Primary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
0.00
0.00
0
753.00
0.00
2.50
0.00
0
753.00
0.00
5.00
0.00
0
753.00
0.00
7.50
0.00
0
753.00
0.00
10.00
0.26
596
753.17
0.13
12.50
2.80
9,550
754.35
7.00
15.00
0.86
1,946
753.45
0.95
17.50
0.56
1,427
753.36
0.59
20.00
0.38
1,152
753.30
0.42
22.50
0.35
1,043
753.28
0.35
25.00
0.00
457
753.13
0.08
27.50
0.00
177
753.05
0.01
30.00
0.00
111
753.03
0.00
32.50
0.00
82
753.03
0.00
35.00
0.00
65
753.02
0.00
37.50
0.00
54
753.02
0.00
40.00
0.00
47
753.01
0.00
42.50
0.00
41
753.01
0.00
45.00
0.00
37
753.01
0.00
47.50
0.00
33
753.01
0.00
50.00
0.00
30
753.01
0.00
52.50
0.00
28
753.01
0.00
55.00
0.00
26
753.01
0.00
57.50
0.00
24
753.01
0.00
60.00
0.00
23
753.01
0.00
62.50
0.00
22
753.01
0.00
65.00
0.00
20
753.01
0.00
67.50
0.00
19
753.01
0.00
70.00
0.00
18
753.01
0.00
72.50
0.00
18
753.01
0.00
75.00
0.00
17
753.01
0.00
77.50
0.00
16
753.01
0.00
80.00
0.00
16
753.00
0.00
82.50
0.00
15
753.00
0.00
85.00
0.00
14
753.00
0.00
87.50
0.00
14
753.00
0.00
90.00
0.00
13
753.00
0.00
92.50
0.00
13
753.00
0.00
95.00
0.00
13
753.00
0.00
97.50
0.00
12
753.00
0.00
100.00
0.00
12
753.00
0.00
102.50
0.00
12
753.00
0.00
105.00
0.00
11
753.00
0.00
107.50
0.00
11
753.00
0.00
110.00
0.00
11
753.00
0.00
112.50
0.00
10
753.00
0.00
115.00
0.00
10
753.00
0.00
117.50
0.00
10
753.00
0.00
120.00
0.00
10
753.00
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 117
Stage -Area -Storage for Pond 7: EX BMP6 - Dry Pond
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
753.00
3,100
0
753.10
3,589
334
753.20
4,114
719
753.30
4,674
1,158
753.40
5,271
1,655
753.50
5,903
2,213
753.60
6,571
2,837
753.70
7,274
3,529
753.80
8,014
4,293
753.90
8,789
5,133
754.00
9,600
6,052
754.10
9,745
7,019
754.20
9,891
8,001
754.30
10,037
8,997
754.40
10,185
10,008
754.50
10,334
11,034
754.60
10,485
12,075
754.70
10,636
13,131
754.80
10,788
14,202
754.90
10,941
15,289
755.00
11,096
16,391
755.10
11,251
17,508
755.20
11,408
18,641
755.30
11,566
19,790
755.40
11,725
20,954
755.50
11,884
22,135
755.60
12,045
23,331
755.70
12,207
24,544
755.80
12,371
25,773
755.90
12,535
27,018
756.00
12,700
28,280
756.10
12,860
29,558
756.20
13,022
30,852
756.30
13,184
32,162
756.40
13,348
33,489
756.50
13,512
34,832
756.60
13,678
36,191
756.70
13,844
37,567
756.80
14,012
38,960
756.90
14,180
40,370
757.00
14,350
41,796
757.10
14,520
43,239
757.20
14,692
44,700
757.30
14,864
46,178
757.40
15,038
47,673
757.50
15,212
49,185
757.60
15,388
50,715
757.70
15,564
52,263
757.80
15,742
53,828
757.90
15,920
55,411
758.00
16,100
57,012
758.10
16,278
58,631
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
758.20
16,457
60,268
758.30
16,637
61,923
758.40
16,818
63,596
758.50
17,000
65,286

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 118
Summary for Pond 16: Prop Modified BMP 6 - Wet Pond
Inflow Area = 6.070 ac, 55.02% Impervious, Inflow Depth = 5.00" for 100-YR event
Inflow = 52.57 cfs @ 11.95 hrs, Volume= 2.530 of
Outflow = 15.16 cfs @ 12.09 hrs, Volume= 2.493 af, Atten= 71 %, Lag= 8.3 min
Primary = 15.16 cfs @ 12.09 hrs, Volume= 2.493 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 757.93' @ 12.09 hrs Surf.Area= 16,038 sf Storage= 50,517 cf
Plug -Flow detention time= 536.3 min calculated for 2.493 of (99% of inflow)
Center -of -Mass det. time= 527.4 min ( 1,327.8 - 800.4 )
Volume Invert Avail.Storaae Storaae Description
#1
754.00'
68,712 cf Temporary Pool (Pyramidal)-isted below (Recalc)
Elevation
Surf.Area
Inc.Store
Cum.Store
Wet.Area
(feet)
(sq-ft)
(cubic -feet)
(cubic -feet)
(sq-ft)
754.00
8,870
0
0
8,870
755.00
11,632
10,220
10,220
11,661
759.00
17,834
58,492
68,712
18,157
Device
Routing
Invert
Outlet Devices
#1
Primary
754.00'
18.0" Round RCP -Round 18"
L= 14.3' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 754.00' / 753.68' S= 0.0224'/' Cc= 0.900
n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.77 sf
#2
Device 1
754.00'
1.5" Vert. Orifice/Grate C= 0.600
#3
Device 1
755.60'
18.0" W x 27.0" H Vert. Orifice/Grate C= 0.600
#4
Device 1
757.85'
16.0' long Sharp -Crested Rectangular Weir End Contraction(s)
Primary OutFlow Max=15.15 cfs @ 12.09 hrs HW=757.92' TW=0.00' (Dynamic Tailwater)
L1=RCP_Round 18" (Inlet Controls 15.15 cfs @ 8.57 fps)
2=Orifice/Grate (Passes < 0.12 cfs potential flow)
3=Orifice/Grate (Passes < 16.92 cfs potential flow)
4=Sharp-Crested Rectangular Weir(Passes < 0.95 cfs potential flow)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 119
Pond 16: Prop Modified BMP 6 - Wet Pond
Hyd rog raph
--'----1--L--1---'----L-----'-- ----L----J--1--L--1-----1--L--L--'-- ■ Inflow
szs7 ofs ❑ Primary
- -'- - 55 --' ----'---'---' -- --'I --'-- -- - i II��-n%*lA're0 06.07(�'�;a-C -
so ,'I --'I-- - 'I--'---�i---II-- it -- �i---�i---II-- it-- �i---�i---�I Pplk ',EI'leV=75''3' ,7.9I' -
45
, I- r--r--I---I- r--r--i --I- r--r--r--r-r--r--r--I---I- r--r--r--I--
40 Storaiae=50'' 5'17 cf - -I---r--r-------r--r--r----r--r--r----r--r--r -r--I-
35 --I-- -+--r-------+--+-------+--+--+----+--+--+-------+--r--+--I--
y I I I I I I I I I I I I I I I I I I I I I I
U,
30 --'-- ---r-----'----r-----'-- -- -- --'-- -- -------'-- --r-- --'--
3 I I I I I I I I I I I I I I I I I I I I I I
o I I I I I I I I I I I I I I I I I I I I I I
LL25 --'-- - -------'-- -------'-- ----------'----------'-- -------'--
,
I I I I I I I I I I I I I I I I I I I I I I I
20 ---- -?--,---------, --,------, --, -----II-- --,-------?--, --, --II--
15.16 cfs
15 -
10 --�-7--r--r------r--r------r--r--r---7--r-------7--r--r--I--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 120
Hydrograph for Pond 16: Prop Modified BMP 6 - Wet Pond
Time
Inflow
Storage
Elevation
Primary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
0.00
0.00
0
754.00
0.00
2.50
0.00
0
754.00
0.00
5.00
0.00
0
754.00
0.00
7.50
0.20
767
754.09
0.01
10.00
0.77
4,396
754.46
0.04
12.50
4.12
40,275
757.26
10.45
15.00
1.23
23,452
756.07
1.63
17.50
0.79
21,386
755.91
0.91
20.00
0.54
20,467
755.84
0.64
22.50
0.48
19,995
755.80
0.51
25.00
0.00
18,738
755.70
0.23
27.50
0.00
17,570
755.61
0.08
30.00
0.00
16,911
755.56
0.07
32.50
0.00
16,267
755.50
0.07
35.00
0.00
15,634
755.45
0.07
37.50
0.00
15,013
755.40
0.07
40.00
0.00
14,403
755.35
0.07
42.50
0.00
13,805
755.30
0.07
45.00
0.00
13,219
755.25
0.06
47.50
0.00
12,644
755.21
0.06
50.00
0.00
12,081
755.16
0.06
52.50
0.00
11,530
755.11
0.06
55.00
0.00
10,992
755.07
0.06
57.50
0.00
10,465
755.02
0.06
60.00
0.00
9,950
754.98
0.06
62.50
0.00
9,448
754.93
0.06
65.00
0.00
8,958
754.89
0.05
67.50
0.00
8,481
754.85
0.05
70.00
0.00
8,016
754.81
0.05
72.50
0.00
7,564
754.76
0.05
75.00
0.00
7,125
754.72
0.05
77.50
0.00
6,698
754.68
0.05
80.00
0.00
6,286
754.65
0.05
82.50
0.00
5,886
754.61
0.04
85.00
0.00
5,500
754.57
0.04
87.50
0.00
5,127
754.54
0.04
90.00
0.00
4,768
754.50
0.04
92.50
0.00
4,424
754.47
0.04
95.00
0.00
4,093
754.43
0.04
97.50
0.00
3,776
754.40
0.03
100.00
0.00
3,473
754.37
0.03
102.50
0.00
3,185
754.34
0.03
105.00
0.00
2,911
754.31
0.03
107.50
0.00
2,652
754.29
0.03
110.00
0.00
2,407
754.26
0.03
112.50
0.00
2,178
754.24
0.02
115.00
0.00
1,963
754.21
0.02
117.50
0.00
1,763
754.19
0.02
120.00
0.00
1,578
754.17
0.02

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 121
Stage -Area -Storage for Pond 16: Prop Modified BMP 6 - Wet Pond
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
754.00
8,870
0
754.05
8,999
447
754.10
9,129
900
754.15
9,260
1,360
754.20
9,392
1,826
754.25
9,525
2,299
754.30
9,659
2,779
754.35
9,794
3,265
754.40
9,930
3,758
754.45
10,067
4,258
754.50
10,204
4,765
754.55
10,343
5,278
754.60
10,482
5,799
754.65
10,623
6,327
754.70
10,764
6,861
754.75
10,906
7,403
754.80
11,050
7,952
754.85
11,194
8,508
754.90
11,339
9,071
754.95
11,485
9,642
755.00
11,632
10,220
755.05
11,701
10,803
755.10
11,771
11,390
755.15
11,841
11,980
755.20
11,911
12,574
755.25
11,981
13,171
755.30
12,051
13,772
755.35
12,122
14,377
755.40
12,193
14,984
755.45
12,264
15,596
755.50
12,335
16,211
755.55
12,406
16,829
755.60
12,478
17,451
755.65
12,550
18,077
755.70
12,622
18,706
755.75
12,694
19,339
755.80
12,767
19,976
755.85
12,839
20,616
755.90
12,912
21,260
755.95
12,985
21,907
756.00
13,059
22,558
756.05
13,132
23,213
756.10
13,206
23,872
756.15
13,280
24,534
756.20
13,354
25,200
756.25
13,428
25,869
756.30
13,503
26,542
756.35
13,578
27,219
756.40
13,653
27,900
756.45
13,728
28,585
756.50
13,803
29,273
756.55
13,879
29,965
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
756.60
13,954
30,661
756.65
14,030
31,360
756.70
14,107
32,064
756.75
14,183
32,771
756.80
14,260
33,482
756.85
14,336
34,197
756.90
14,413
34,916
756.95
14,491
35,638
757.00
14,568
36,365
757.05
14,646
37,095
757.10
14,723
37,829
757.15
14,801
38,568
757.20
14,880
39,310
757.25
14,958
40,055
757.30
15,037
40,805
757.35
15,116
41,559
757.40
15,195
42,317
757.45
15,274
43,079
757.50
15,354
43,844
757.55
15,433
44,614
757.60
15,513
45,388
757.65
15,593
46,165
757.70
15,674
46,947
757.75
15,754
47,733
757.80
15,835
48,522
757.85
15,916
49,316
757.90
15,997
50,114
757.95
16,078
50,916
758.00
16,160
51,722
758.05
16,241
52,532
758.10
16,323
53,346
758.15
16,406
54,164
758.20
16,488
54,987
758.25
16,571
55,813
758.30
16,653
56,644
758.35
16,736
57,478
758.40
16,820
58,317
758.45
16,903
59,160
758.50
16,987
60,008
758.55
17,070
60,859
758.60
17,154
61,715
758.65
17,239
62,574
758.70
17,323
63,438
758.75
17,408
64,307
758.80
17,493
65,179
758.85
17,578
66,056
758.90
17,663
66,937
758.95
17,748
67,822
759.00
17,834
68,712

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 122
Summary for Pond 17: BMP 6 PP
[43] Hint: Has no inflow (Outflow=Zero)
Volume Invert Avail.Storaae Storaae Description
#1 748.00' 24,668 cf Permanent Pool (Prismatic)Listed below (Recalc)
#2 752.00' 3,859 cf Forebay (Prismatic)Listed below (Recalc)
28,527 cf Total Available Storage
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet)
(cubic -feet)
748.00
2,152
0
0
749.00
2,734
2,443
2,443
754.00
6,156
22,225
24,668
Elevation
Surf.Area
Inc.Store
Cum.Store
(feet)
(sq-ft)
(cubic -feet)
(cubic -feet)
752.00
1,145
0
0
754.00
2,714
3,859
3,859

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 123
Elevation
Storage
(feet)
(cubic -feet)
748.00
0
748.04
87
748.08
174
748.12
262
748.16
352
748.20
442
748.24
533
748.28
625
748.32
718
748.36
812
748.40
907
748.44
1,003
748.48
1,100
748.52
1,198
748.56
1,296
748.60
1,396
748.64
1,496
748.68
1,598
748.72
1,700
748.76
1,804
748.80
1,908
748.84
2,013
748.88
2,119
748.92
2,226
748.96
2,334
749.00
2,443
749.04
2,553
749.08
2,664
749.12
2,776
749.16
2,889
749.20
3,003
749.24
3,119
749.28
3,235
749.32
3,353
749.36
3,472
749.40
3,591
749.44
3,712
749.48
3,834
749.52
3,957
749.56
4,081
749.60
4,207
749.64
4,333
749.68
4,460
749.72
4,589
749.76
4,718
749.80
4,849
749.84
4,981
749.88
5,114
749.92
5,248
749.96
5,383
750.00
5,519
750.04
5,656
Stage -Area -Storage for Pond 17: BMP 6 PP
Elevation
Storage
(feet)
(cubic -feet)
750.08
5,795
750.12
5,934
750.16
6,075
750.20
6,217
750.24
6,359
750.28
6,503
750.32
6,648
750.36
6,794
750.40
6,941
750.44
7,090
750.48
7,239
750.52
7,389
750.56
7,541
750.60
7,693
750.64
7,847
750.68
8,002
750.72
8,158
750.76
8,315
750.80
8,473
750.84
8,632
750.88
8,792
750.92
8,954
750.96
9,116
751.00
9,280
751.04
9,444
751.08
9,610
751.12
9,777
751.16
9,945
751.20
10,114
751.24
10,284
751.28
10,455
751.32
10,628
751.36
10,801
751.40
10,976
751.44
11,151
751.48
11,328
751.52
11,506
751.56
11,685
751.60
11,865
751.64
12,046
751.68
12,228
751.72
12,411
751.76
12,596
751.80
12,781
751.84
12,968
751.88
13,155
751.92
13,344
751.96
13,534
752.00
13,725
752.04
13,963
752.08
14,204
752.12
14,447
Elevation
Storage
(feet)
(cubic -feet)
752.16
14,693
752.20
14,941
752.24
15,191
752.28
15,443
752.32
15,698
752.36
15,956
752.40
16,215
752.44
16,477
752.48
16,741
752.52
17,008
752.56
17,277
752.60
17,549
752.64
17,822
752.68
18,098
752.72
18,377
752.76
18,657
752.80
18,941
752.84
19,226
752.88
19,514
752.92
19,804
752.96
20,097
753.00
20,391
753.04
20,689
753.08
20,988
753.12
21,290
753.16
21,594
753.20
21,901
753.24
22,210
753.28
22,521
753.32
22,835
753.36
23,151
753.40
23,469
753.44
23,790
753.48
24,113
753.52
24,439
753.56
24,766
753.60
25,097
753.64
25,429
753.68
25,764
753.72
26,101
753.76
26,441
753.80
26,782
753.84
27,127
753.88
27,473
753.92
27,822
753.96
28,173
754.00
28,527

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 124
Summary for Link 9: Pre-Dev P0I-6
Inflow Area = 4.820 ac, 16.60% Impervious, Inflow Depth = 3.89" for 100-YR event
Inflow = 14.94 cfs @ 12.06 hrs, Volume= 1.563 of
Primary = 14.94 cfs @ 12.06 hrs, Volume= 1.563 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 9: Pre-Dev P0I-6
Hyd rog raph
--'�---'�---'�
--'�
--'�---'�---'�--'�
--'�
--'�---'�--'�
--'�--'�---'�---'�
--'�--'�---'�---'�
--'� --'� --'�--
C Inflow
16
�'
� ,1
- 1asaors
i--r--1---1--i--r--T
--1--i--r--T
--1---1--i--r--1---1--i--r--T
--1--
❑ Primary
14.94 cfs
T__r__I---1--r--r--1---I--r-
1 -
T-
In
fl �.,w � re,�.�_�
. r a=
�_ _
T
15
��1
1
1
1 1
1 1
1
1 1 1 1
V
.
14
13
12
--T-------T--T--�-----,--T--T----T--T--T--�-----T--T--T----
10
y
--
-+--T--1---1--�--T--1---1--T--T--r--1--�--+--r--1---1--+--T--r--1--
L__1__L__1___I__1__L__L__I__
u g
__
_L__I__
__
--1--__r--__r-T--T--r--1---1--T--r--r--1--
LL 7
T--r--r--1--T--r--�
6
�1
__
5
,1
L--L--'---'--L--L--'---'--L--L--L--'--J--L--L--'-----L--L--L--'--
4
--
3
2
--
-T-----i--
--T--T--i--
--T--T
--i--
--T--T-------T--T--1T--i--
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 125
Hydrograph for Link 9: Pre-Dev P0I-6
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.00
0.00
0.00
5.00
0.00
0.00
0.00
7.50
0.00
0.00
0.00
10.00
0.13
0.00
0.13
12.50
7.02
0.00
7.02
15.00
0.95
0.00
0.95
17.50
0.59
0.00
0.59
20.00
0.42
0.00
0.42
22.50
0.36
0.00
0.36
25.00
0.08
0.00
0.08
27.50
0.01
0.00
0.01
30.00
0.00
0.00
0.00
32.50
0.00
0.00
0.00
35.00
0.00
0.00
0.00
37.50
0.00
0.00
0.00
40.00
0.00
0.00
0.00
42.50
0.00
0.00
0.00
45.00
0.00
0.00
0.00
47.50
0.00
0.00
0.00
50.00
0.00
0.00
0.00
52.50
0.00
0.00
0.00
55.00
0.00
0.00
0.00
57.50
0.00
0.00
0.00
60.00
0.00
0.00
0.00
62.50
0.00
0.00
0.00
65.00
0.00
0.00
0.00
67.50
0.00
0.00
0.00
70.00
0.00
0.00
0.00
72.50
0.00
0.00
0.00
75.00
0.00
0.00
0.00
77.50
0.00
0.00
0.00
80.00
0.00
0.00
0.00
82.50
0.00
0.00
0.00
85.00
0.00
0.00
0.00
87.50
0.00
0.00
0.00
90.00
0.00
0.00
0.00
92.50
0.00
0.00
0.00
95.00
0.00
0.00
0.00
97.50
0.00
0.00
0.00
100.00
0.00
0.00
0.00
102.50
0.00
0.00
0.00
105.00
0.00
0.00
0.00
107.50
0.00
0.00
0.00
110.00
0.00
0.00
0.00
112.50
0.00
0.00
0.00
115.00
0.00
0.00
0.00
117.50
0.00
0.00
0.00
120.00
0.00
0.00
0.00

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 126
Summary for Link 19: Post-Dev P0I-6
Inflow Area = 6.110 ac, 54.66% Impervious, Inflow Depth > 4.92" for 100-YR event
Inflow = 15.22 cfs @ 12.08 hrs, Volume= 2.503 of
Primary = 15.22 cfs @ 12.08 hrs, Volume= 2.503 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
17
16
15
14
1�
12
11
N 1C
U C
o E
LL _
Link 19: Post-Dev P0I-6
Hyd rog raph
+----
C lnflow
_---+--+--+-------+--+-------+--+--+----+--+--+-------+--+--
15.22
cfs 1--L--1---1--L--L--'---'------L--1--J--1--L--1---1--L--L--L--'--
❑Primary
15.22 cfs
--I
--I
— —II
--'
- -i
--'
--
--
— 'Il —
---T-------
I
r--r--r----r--r--r----r--r--r--r-r--r--r-------r--r--r--I--
4 —
1--L--'---'--L--L--'---'--L--1--L--1--J--1--L--1-----1--L--L--'--
L--L--'---'--L--L--'---'--L--1--L--1--J--1--L--1---1--L--L--L--'--
--
— I— — —Ili—
I I
— — — — —
-r-------r--r--r----r--r--r----r--r--r-------r--r--r--I--
— — 'Il —
I I --
—'— — 4 —
— I— — —Ili—
I I
— — — —
— — 'Il —
I I
— —'— — —
— I—
T
—
- In fI o;w '�1 A're;a
F T I II__
— — � — — — — — — + — — — — — — —'—
6 :1 1 a -a r -
ii i
— — — L — — L — —'— -
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Granite Quarry Type 1124-hr 100-YR Rainfall=7.21"
Prepared by {enter your company name here} Printed 12/30/2022
HydroCAD®10.00-24 s/n 09920 ©2018 HydroCAD Software Solutions LLC Page 127
Hydrograph for Link 19: Post-Dev P0I-6
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.00
0.00
0.00
5.00
0.00
0.00
0.00
7.50
0.01
0.00
0.01
10.00
0.04
0.00
0.04
12.50
10.47
0.00
10.47
15.00
1.63
0.00
1.63
17.50
0.91
0.00
0.91
20.00
0.64
0.00
0.64
22.50
0.52
0.00
0.52
25.00
0.23
0.00
0.23
27.50
0.08
0.00
0.08
30.00
0.07
0.00
0.07
32.50
0.07
0.00
0.07
35.00
0.07
0.00
0.07
37.50
0.07
0.00
0.07
40.00
0.07
0.00
0.07
42.50
0.07
0.00
0.07
45.00
0.06
0.00
0.06
47.50
0.06
0.00
0.06
50.00
0.06
0.00
0.06
52.50
0.06
0.00
0.06
55.00
0.06
0.00
0.06
57.50
0.06
0.00
0.06
60.00
0.06
0.00
0.06
62.50
0.06
0.00
0.06
65.00
0.05
0.00
0.05
67.50
0.05
0.00
0.05
70.00
0.05
0.00
0.05
72.50
0.05
0.00
0.05
75.00
0.05
0.00
0.05
77.50
0.05
0.00
0.05
80.00
0.05
0.00
0.05
82.50
0.04
0.00
0.04
85.00
0.04
0.00
0.04
87.50
0.04
0.00
0.04
90.00
0.04
0.00
0.04
92.50
0.04
0.00
0.04
95.00
0.04
0.00
0.04
97.50
0.03
0.00
0.03
100.00
0.03
0.00
0.03
102.50
0.03
0.00
0.03
105.00
0.03
0.00
0.03
107.50
0.03
0.00
0.03
110.00
0.03
0.00
0.03
112.50
0.02
0.00
0.02
115.00
0.02
0.00
0.02
117.50
0.02
0.00
0.02
120.00
0.02
0.00
0.02

Hydraflow Storm Sewers Extension for Autodesk® Civil 3D® Plan
12
11 10
9
Outfall
13
a Outfall
Outfall
1
2 8
3
4
5
7
6
Project File: 220328_Granite Quarry.stm Number of lines: 13 Date: 12/30/2022
Storm Sewers v2020.00

Inlet Report
Page 1
Line
Inlet ID
Q =
Q
Q
Q
Junc
Curb Inlet
Grate Inlet
Gutter
Inlet
Byp
No
CIA
carry
capt
Byp
Type
Line
Ht
L
Area
L
W
So
W
Sw
Sx
n
Depth
Spread
Depth
Spread
Depr
No
(cfs)
(cfs)
(cfs)
(cfs)
(in)
(ft)
(sgft)
(ft)
(ft)
(ft/ft)
(ft)
(ft/ft)
(ft/ft)
(ft)
(ft)
(ft)
(ft)
(in)
1
EX-CB1
1.48
0.41
1.89
0.00
Comb
6.0
3.00
3.66
3.00
2.00
Sag
2.00
0.060
0.020
0.000
0.18
4.88
0.34
4.88
2.0
Off
2
EX-CB2
1.48
0.00
1.28
0.20
Comb
6.0
3.00
0.00
3.00
2.00
0.030
2.00
0.060
0.020
0.013
0.18
5.13
0.26
1.51
2.0
1
3
EX-CB3
1.48
0.00
1.28
0.20
Comb
6.0
3.00
0.00
3.00
2.00
0.030
2.00
0.060
0.020
0.013
0.18
5.13
0.26
1.51
2.0
1
4
A-20
0.78
0.00
0.78
0.00
DrCrb
6.0
12.00
0.00
0.00
0.00
Sag
0.00
0.330
0.330
0.000
0.08
0.24
0.08
0.24
0.0
Off
5
A-21
3.71
0.00
3.71
0.00
DrGrt
0.0
0.00
7.32
6.00
2.00
Sag
2.00
0.030
0.030
0.000
0.18
14.09
0.18
14.09
0.0
Off
6
A-22
0.00
0.00
0.00
0.00
MH
0.0
0.00
0.00
0.00
0.00
Sag
0.00
0.000
0.000
0.000
0.00
0.00
0.00
0.00
0.0
Off
7
A-23
2.08
0.00
2.08
0.00
DrGrt
0.0
0.00
3.66
3.00
2.00
Sag
2.00
0.030
0.030
0.000
0.17
13.23
0.17
13.23
0.0
Off
8
Dummy Node
8.00*
0.00
0.00
8.00
MH
0.0
0.00
0.00
0.00
0.00
Sag
0.00
0.000
0.000
0.000
0.00
0.00
0.00
0.00
0.0
Off
9
A-31
1.34
0.00
1.34
0.00
DrCrb
6.0
12.00
0.00
0.00
0.00
Sag
0.00
0.330
0.330
0.013
0.11
0.34
0.11
0.34
0.0
Off
10
A-33
3.12
0.00
3.12
0.00
Comb
6.0
6.00
3.66
3.00
2.00
Sag
2.00
0.060
0.020
0.000
0.21
6.58
0.38
6.58
2.0
Off
11
A-34
3.12
0.00
3.12
0.00
Comb
6.0
6.00
3.66
3.00
2.00
Sag
2.00
0.060
0.020
0.000
0.21
6.58
0.38
6.58
2.0
Off
12
A-32
2.52
0.00
2.52
0.00
DrCrb
6.0
12.00
0.00
0.00
0.00
Sag
0.00
0.330
0.330
0.000
0.17
0.51
0.17
0.51
0.0
Off
13
A-11
2.97
0.00
1.51
1.46
DrGrt
0.0
0.00
0.00
3.00
2.00
0.015
2.00
0.030
0.030
0.013
0.16
12.73
0.16
12.73
0.0
Off
Project File: 220328_Granite Quarry.stm TNumber
of lines: 13
Run Date: 12/30/2022
NOTES: Inlet N-Values = 0.016; Intensity = 103.30 / (Inlet time + 16.60) " 0.82; Return period = 25 Yrs. ; Indicates Known O added. All curb inlets are throat.
Storm Sewers v2020.00

Storm Sewer Tabulation
Page 1
Station
Len
Drng Area
Rnoff
Area x C
Tc
Rain
Total
Cap
Vel
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
coeff
(I)
flow
full
Line
To
Incr
Total
Incr
Total
Inlet
Syst
Size
Slope
Dn
Up
Dn
Up
Dn
Up
Line
(ft)
(ac)
(ac)
(C)
(min)
(min)
(in/hr)
(cfs)
(cfs)
(ft/s)
(in)
(%)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
1
End
53.500
0.20
1.48
0.90
0.18
1.34
5.0
7.6
4.0
13.34
24.20
4.30
36
0.11
753.94
754.00
755.25
755.41
756.94
759.02
EX-CB1
2
1
66.100
0.20
1.28
0.90
0.18
1.16
5.0
7.4
4.0
4.62
11.80
4.42
15
2.84
754.08
755.96
755.99
756.83
759.02
761.32
EX-CB2
3
2
51.900
0.20
1.08
0.90
0.18
0.98
5.0
7.2
4.0
3.90
6.51
4.94
15
0.87
756.09
756.54
756.83
757.34
761.32
761.54
EX-CB3
4
3
31.820
0.10
0.88
0.95
0.10
0.80
5.0
7.1
4.0
3.19
11.53
6.19
15
1.89
757.00
757.60
757.45
758.32
761.54
763.04
SD-20(2)
5
4
78.000
0.50
0.78
0.90
0.45
0.70
5.0
6.8
4.0
2.81
5.94
4.01
15
0.50
757.60
757.99
758.32
758.66
763.04
763.08
SD-A30
6
5
166.327
0.00
0.28
0.00
0.00
0.25
5.0
5.6
4.0
1.01
5.97
2.27
15
0.51
757.99
758.83
758.66
759.22
763.08
764.67
SD-A40
7
6
106.428
0.28
0.28
0.90
0.25
0.25
5.0
5.0
4.0
1.01
5.92
3.04
15
0.50
758.83
759.36
759.22
759.75
764.67
763.66
SD-A50
8
1
50.000
0.00
0.00
0.00
0.00
0.00
0.0
0.0
4.0
8.00
21.64
3.86
24
0.78
754.18
754.57
755.99
755.58
759.02
0.00
9
End
157.558
0.18
1.36
0.90
0.16
1.22
5.0
5.8
4.0
4.89
9.67
3.23
18
0.50
753.75
754.54
755.44
755.59
755.06
761.19
SD-A61
10
9
113.399
0.42
0.84
0.90
0.38
0.76
5.0
5.1
4.0
3.02
7.38
2.57
18
0.49
754.65
755.21
755.89
756.00
761.19
759.77
SD-1312
11
10
21.000
0.42
0.42
0.90
0.38
0.38
5.0
5.0
4.0
1.51
7.94
3.37
18
0.57
756.78
756.90
757.22
757.36
759.77
759.77
SD-1313
12
9
119.263
0.34
0.34
0.90
0.31
0.31
5.0
5.0
4.0
1.22
4.58
3.16
15
0.50
755.79
756.39
756.23
756.83
761.19
759.32
SD-A62
13
End
49.799
0.40
0.40
0.90
0.36
0.36
5.0
5.0
4.0
1.44
9.67
2.37
18
0.50
755.00
755.25
755.80
755.70
756.56
760.66
SD -Al 1
Project File: 220328_Granite Quarry.stm
Number of lines: 13
Run Date: 12/30/2022
NOTES:Intensity = 4.04 / (Inlet time + 5.50) ^ 0.00; Return period =Yrs. 1 ; c = cir e = ellip b = box
Storm Sewers v2020.00

Inlet Report
Page 1
Line
Inlet ID
Q =
Q
Q
Q
Junc
Curb Inlet
Grate Inlet
Gutter
Inlet
Byp
No
CIA
carry
capt
Byp
Type
Line
Ht
L
Area
L
W
So
W
SW
Sx
n
Depth
Spread
Depth
Spread
Depr
No
(cfs)
(cfs)
(cfs)
(cfs)
(in)
(ft)
(sgft)
(ft)
(ft)
(ft/ft)
(ft)
(ft/ft)
(ft/ft)
(ft)
(ft)
(ft)
(ft)
(in)
1
EX-CB1
0.72
0.03
0.75
0.00
Comb
6.0
3.00
3.66
3.00
2.00
Sag
2.00
0.060
0.020
0.000
0.11
1.92
0.27
1.92
2.0
Off
2
EX-CB2
0.72
0.00
0.70
0.02
Comb
6.0
3.00
0.00
3.00
2.00
0.030
2.00
0.060
0.020
0.013
0.14
3.20
0.20
0.57
2.0
1
3
EX-CB3
0.72
0.00
0.70
0.02
Comb
6.0
3.00
0.00
3.00
2.00
0.030
2.00
0.060
0.020
0.013
0.14
3.20
0.20
0.57
2.0
1
4
A-20
0.38
0.00
0.38
0.00
DrCrb
6.0
12.00
0.00
0.00
0.00
Sag
0.00
0.330
0.330
0.000
0.05
0.15
0.05
0.15
0.0
Off
5
A-21
1.80
0.00
1.80
0.00
DrGrt
0.0
0.00
7.32
6.00
2.00
Sag
2.00
0.030
0.030
0.000
0.11
9.46
0.11
9.46
0.0
Off
6
A-22
0.00
0.00
0.00
0.00
MH
0.0
0.00
0.00
0.00
0.00
Sag
0.00
0.000
0.000
0.000
0.00
0.00
0.00
0.00
0.0
Off
7
A-23
1.01
0.00
1.01
0.00
DrGrt
0.0
0.00
3.66
3.00
2.00
Sag
2.00
0.030
0.030
0.000
0.10
8.93
0.10
8.93
0.0
Off
8
Dummy Node
8.00*
0.00
0.00
8.00
MH
0.0
0.00
0.00
0.00
0.00
Sag
0.00
0.000
0.000
0.000
0.00
0.00
0.00
0.00
0.0
Off
9
A-31
0.65
0.00
0.65
0.00
DrCrb
6.0
12.00
0.00
0.00
0.00
Sag
0.00
0.330
0.330
0.013
0.07
0.21
0.07
0.21
0.0
Off
10
A-33
1.51
0.00
1.51
0.00
Comb
6.0
6.00
3.66
3.00
2.00
Sag
2.00
0.060
0.020
0.000
0.13
2.73
0.30
2.73
2.0
Off
11
A-34
1.51
0.00
1.51
0.00
Comb
6.0
6.00
3.66
3.00
2.00
Sag
2.00
0.060
0.020
0.000
0.13
2.73
0.30
2.73
2.0
Off
12
A-32
1.22
0.00
1.22
0.00
DrCrb
6.0
12.00
0.00
0.00
0.00
Sag
0.00
0.330
0.330
0.000
0.10
0.32
0.10
0.32
0.0
Off
13
A-11
1.44
0.00
0.84
0.60
DrGrt
0.0
0.00
0.00
3.00
2.00
0.015
2.00
0.030
0.030
0.013
0.11
9.40
0.11
9.40
0.0
Off
Project File: 220328_Granite Quarry.stm TNumber
of lines: 13
Run Date: 12/30/2022
NOTES: Inlet N-Values = 0.016; Intensity = 4.04 / (Inlet time + 5.50) ^ 0.00; Return period = 1 Yrs. ; ' Indicates Known Q added. All curb inlets are throat.
Storm Sewers v2020.00

Storm Sewer Tabulation
Page 1
Station
Len
Drng Area
Rnoff
Area x C
Tc
Rain
Total
Cap
Vel
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
coeff
(I)
flow
full
Line
To
Incr
Total
Incr
Total
Inlet
Syst
Size
Slope
Dn
Up
Dn
Up
Dn
Up
Line
(ft)
(ac)
(ac)
(C)
(min)
(min)
(in/hr)
(cfs)
(cfs)
(ft/s)
(in)
(%)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
1
End
53.500
0.20
1.48
0.90
0.18
1.34
5.0
7.2
6.5
16.73
24.20
5.04
36
0.11
753.94
754.00
755.25
755.58
756.94
759.02
EX-CB1
2
1
66.100
0.20
1.28
0.90
0.18
1.16
5.0
7.0
6.6
7.60
11.80
6.43
15
2.84
754.08
755.96
756.27
757.05
759.02
761.32
EX-CB2
3
2
51.900
0.20
1.08
0.90
0.18
0.98
5.0
6.8
6.6
6.45
6.51
6.03
15
0.87
756.09
756.54
757.10
757.56
761.32
761.54
EX-CB3
4
3
31.820
0.10
0.88
0.95
0.10
0.80
5.0
6.8
6.6
5.28
11.53
7.28
15
1.89
757.00
757.60
757.59
758.53
761.54
763.04
SD-20(2)
5
4
78.000
0.50
0.78
0.90
0.45
0.70
5.0
6.5
6.7
4.69
5.94
4.94
15
0.50
757.60
757.99
758.53
758.87
763.04
763.08
SD-A30
6
5
166.327
0.00
0.28
0.00
0.00
0.25
5.0
5.5
6.9
1.75
5.97
2.74
15
0.51
757.99
758.83
758.87
759.35
763.08
764.67
SD-A40
7
6
106.428
0.28
0.28
0.90
0.25
0.25
5.0
5.0
7.1
1.78
5.92
3.62
15
0.50
758.83
759.36
759.35
759.89
764.67
763.66
SD-A50
8
1
50.000
0.00
0.00
0.00
0.00
0.00
0.0
0.0
4.0
8.00
21.64
2.66
24
0.78
754.18
754.57
756.27
756.30
759.02
0.00
9
End
157.558
0.18
1.36
0.90
0.16
1.22
5.0
5.7
6.9
8.41
9.67
4.78
18
0.50
753.75
754.54
755.44
756.00
755.06
761.19
SD-A61
10
9
113.399
0.42
0.84
0.90
0.38
0.76
5.0
5.1
7.0
5.32
7.38
3.01
18
0.49
754.65
755.21
756.51
756.80
761.19
759.77
SD-1312
11
10
21.000
0.42
0.42
0.90
0.38
0.38
5.0
5.0
7.1
2.67
7.94
3.96
18
0.57
756.78
756.90
757.38
757.52
759.77
759.77
SD-1313
12
9
119.263
0.34
0.34
0.90
0.31
0.31
5.0
5.0
7.1
2.16
4.58
3.40
15
0.50
755.79
756.39
756.51
756.98
761.19
759.32
SD-A62
13
End
49.799
0.40
0.40
0.90
0.36
0.36
5.0
5.0
7.1
2.54
9.67
3.24
18
0.50
755.00
755.25
755.80
755.85
756.56
760.66
SD -Al 1
Project File: 220328_Granite Quarry.stm
Number of lines: 13
Run Date: 12/30/2022
NOTES:Intensity = 105.57 / (Inlet time + 18.00) ^ 0.86; Return period =Yrs. 10 ; c = cir e = ellip b = box
Storm Sewers v2020.00

Inlet Report
Page 1
Line
Inlet ID
Q =
Q
Q
Q
Junc
Curb Inlet
Grate Inlet
Gutter
Inlet
Byp
No
CIA
carry
capt
Byp
Type
Line
Ht
L
Area
L
W
So
W
Sw
Sx
n
Depth
Spread
Depth
Spread
Depr
No
(cfs)
(cfs)
(cfs)
(cfs)
(in)
(ft)
(sgft)
(ft)
(ft)
(ft/ft)
(ft)
(ft/ft)
(ft/ft)
(ft)
(ft)
(ft)
(ft)
(in)
1
EX-CB1
1.27
0.27
1.54
0.00
Comb
6.0
3.00
3.66
3.00
2.00
Sag
2.00
0.060
0.020
0.000
0.15
3.60
0.32
3.60
2.0
Off
2
EX-CB2
1.27
0.00
1.13
0.14
Comb
6.0
3.00
0.00
3.00
2.00
0.030
2.00
0.060
0.020
0.013
0.17
4.69
0.24
1.29
2.0
1
3
EX-CB3
1.27
0.00
1.13
0.14
Comb
6.0
3.00
0.00
3.00
2.00
0.030
2.00
0.060
0.020
0.013
0.17
4.69
0.24
1.29
2.0
1
4
A-20
0.67
0.00
0.67
0.00
DrCrb
6.0
12.00
0.00
0.00
0.00
Sag
0.00
0.330
0.330
0.000
0.07
0.21
0.07
0.21
0.0
Off
5
A-21
3.18
0.00
3.18
0.00
DrGrt
0.0
0.00
7.32
6.00
2.00
Sag
2.00
0.030
0.030
0.000
0.16
12.89
0.16
12.89
0.0
Off
6
A-22
0.00
0.00
0.00
0.00
MH
0.0
0.00
0.00
0.00
0.00
Sag
0.00
0.000
0.000
0.000
0.00
0.00
0.00
0.00
0.0
Off
7
A-23
1.78
0.00
1.78
0.00
DrGrt
0.0
0.00
3.66
3.00
2.00
Sag
2.00
0.030
0.030
0.000
0.15
12.13
0.15
12.13
0.0
Off
8
Dummy Node
8.00*
0.00
0.00
8.00
MH
0.0
0.00
0.00
0.00
0.00
Sag
0.00
0.000
0.000
0.000
0.00
0.00
0.00
0.00
0.0
Off
9
A-31
1.14
0.00
1.14
0.00
DrCrb
6.0
12.00
0.00
0.00
0.00
Sag
0.00
0.330
0.330
0.013
0.10
0.30
0.10
0.30
0.0
Off
10
A-33
2.67
0.00
2.67
0.00
Comb
6.0
6.00
3.66
3.00
2.00
Sag
2.00
0.060
0.020
0.000
0.19
5.60
0.36
5.60
2.0
Off
11
A-34
2.67
0.00
2.67
0.00
Comb
6.0
6.00
3.66
3.00
2.00
Sag
2.00
0.060
0.020
0.000
0.19
5.60
0.36
5.60
2.0
Off
12
A-32
2.16
0.00
2.16
0.00
DrCrb
6.0
12.00
0.00
0.00
0.00
Sag
0.00
0.330
0.330
0.000
0.15
0.46
0.15
0.46
0.0
Off
13
A-11
2.54
0.00
1.34
1.20
DrGrt
0.0
0.00
0.00
3.00
2.00
0.015
2.00
0.030
0.030
0.013
0.15
12.07
0.15
12.07
0.0
Off
Project File: 220328_Granite Quarry.stm TNumber
of lines: 13
Run Date: 12/30/2022
NOTES: Inlet N-Values = 0.016; Intensity = 105.57 / (Inlet time + 18.00) " 0.86; Return period = 10 Yrs. ; Indicates Known O added. All curb inlets are throat.
Storm Sewers v2020.00

Storm Sewer Tabulation
Page 1
Station
Len
Drng Area
Rnoff
Area x C
Tc
Rain
Total
Cap
Vel
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
coeff
(I)
flow
full
Line
To
Incr
Total
Incr
Total
Inlet
Syst
Size
Slope
Dn
Up
Dn
Up
Dn
Up
Line
(ft)
(ac)
(ac)
(C)
(min)
(min)
(in/hr)
(cfs)
(cfs)
(ft/s)
(in)
(%)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
1
End
53.500
0.20
1.48
0.90
0.18
1.34
5.0
8.4
7.3
17.76
24.20
5.15
36
0.11
753.94
754.00
755.29
755.63
756.94
759.02
EX-CB1
2
1
66.100
0.20
1.28
0.90
0.18
1.16
5.0
8.3
7.3
8.49
11.80
6.92
15
2.84
754.08
755.96
756.35
757.32
759.02
761.32
EX-CB2
3
2
51.900
0.20
1.08
0.90
0.18
0.98
5.0
8.1
7.4
7.21
6.51
5.87
15
0.87
756.09
756.54
758.44
758.99
761.32
761.54
EX-CB3
4
3
31.820
0.10
0.88
0.95
0.10
0.80
5.0
8.0
7.4
5.90
11.53
4.81
15
1.89
757.00
757.60
759.26
759.41
761.54
763.04
SD-20(2)
5
4
78.000
0.50
0.78
0.90
0.45
0.70
5.0
7.7
7.5
5.25
5.94
4.28
15
0.50
757.60
757.99
759.59
759.90
763.04
763.08
SD-A30
6
5
166.327
0.00
0.28
0.00
0.00
0.25
5.0
6.0
7.9
2.00
5.97
1.63
15
0.51
757.99
758.83
760.33
760.42
763.08
764.67
SD-A40
7
6
106.428
0.28
0.28
0.90
0.25
0.25
5.0
5.0
8.2
2.08
5.92
1.74
15
0.50
758.83
759.36
760.43
760.48
764.67
763.66
SD-A50
8
1
50.000
0.00
0.00
0.00
0.00
0.00
0.0
0.0
4.0
8.00
21.64
2.61
24
0.78
754.18
754.57
756.35
756.39
759.02
0.00
9
End
157.558
0.18
1.36
0.90
0.16
1.22
5.0
5.7
8.0
9.82
9.67
5.56
18
0.50
753.75
754.54
755.44
756.26
755.06
761.19
SD-A61
10
9
113.399
0.42
0.84
0.90
0.38
0.76
5.0
5.1
8.2
6.21
7.38
3.52
18
0.49
754.65
755.21
756.94
757.34
761.19
759.77
SD-1312
11
10
21.000
0.42
0.42
0.90
0.38
0.38
5.0
5.0
8.2
3.12
7.94
4.14
18
0.57
756.78
756.90
757.43
757.57
759.77
759.77
SD-1313
12
9
119.263
0.34
0.34
0.90
0.31
0.31
5.0
5.0
8.2
2.52
4.58
2.75
15
0.50
755.79
756.39
756.94
757.13
761.19
759.32
SD-A62
13
End
49.799
0.40
0.40
0.90
0.36
0.36
5.0
5.0
8.2
2.97
9.67
3.55
18
0.50
755.00
755.25
755.80
755.90
756.56
760.66
SD -Al 1
Project File: 220328_Granite Quarry.stm
Number of lines: 13
Run Date: 12/30/2022
NOTES:Intensity = 103.30 / (Inlet time + 16.60) ^ 0.82; Return period =Yrs. 25 ; c = cir e = ellip b = box
Storm Sewers v2020.00

Appendices
C)=2.54CF8
O50=0.5
DMAX=075
THICKNESS = 1.0
12'
4.5'C:: 12'
U
3
)
3 5 lU 20 50 100 200 500 1000
Curves may not beextrapolated.
Figure 8.0GaDesign o/outlet protection protection from around pipe flowing full, minimum taUwmo condition (T_<u.5 diameter).

Appendices
C)=8.41 CF8
D50=0.4
DMAX= 0.0
THCKNE88=1.0
10'
4.5' C:: 12'
3 5 lU 20 50 100 200 500 1000
Curves may not beextrapolated.
Figure 8.0GaDesign o/outlet protection protection from around pipe flowing full, minimum taUwmo condition (T_<u.5 diameter).

EX-FE8
Appendices
C)=1073CF8
D50=0.0
DMAX= 0.9
THCKNE88=1.5
II
Nil
FIR
20'
91 C 1 23'
5 lU 20 50 100 200 500 1000
Curves may not beextrapolated.
Figure 8.0GaDesign o/outlet protection protection from around pipe flowing full, minimum taUwmo condition (T_<u.5 diameter).

Phase I - Sediment Basin A
4.400 Disturbed Area (Acres)
10.6921 Peak Flow from 10-year Storm (cfs)
7920
Required Volume ft3
4651
Required Surface Area ft2
48.2
Suggested Width ft
96.4
Suggested Length ft
42300 Actual Volume ft3I I Okay
14610 Actual Surface Area ft2I Okay
30 Trial Weir Length ft
1 Trial Depth of Flow ft
90.0 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
0.167 Head on Skimmer (feet)
1.25 Orifice Size (1/4 inch increments)
2.68 Dewatering Time (days)
Suggest about 3 days
!1a SbwaQe VaLme Tabb
MEW
4,273.53
WA
7%.000
-Mv10
4w
756.00a
1-277.44
TWO
-PA.CDD
10,557.N
D"
757.M
11M4$1
I-M
758.WD
13.174.37
1.000
7N.DDD
14.614.53
11M
An. End Arse Fore wIJ Val. {Qu. nj
N/A
M
5M.65
oAa
1147.4
12510.65
13892.46
Avg. End Am Om d&n W. $w-it)
&OD
0M
5M.65
5M.65
16193.g6
25�Q7.71
42M.15
Cax beemerial U1tl. �eu.fll Cent Ohre 1+01. I��h
WJA
4.60
0.00
0.00
4475.45
4675.45
OM
f875.45
11201.31
15576.77
IM n
2838155
139&26
412M7.81

Phase I - Sediment Basin B
2.400 Disturbed Area (Acres)
5.8321 Peak Flow from 10-year Storm (cfs)
4320
Required Volume ft3
2537
Required Surface Area ft2
35.6
Suggested Width ft
71.2
Suggested Length ft
38609 Actual Volume ft3I I Okay
7580 Actual Surface Area ft2I Okay
30 Trial Weir Length ft
1 Trial Depth of Flow ft
90.0 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
0.167 Head on Skimmer (feet)
1 Orifice Size (1/4 inch increments)
2.29 Dewatering Time (days)
Suggest about 3 days
Mage MwMgF&vau" law
CmarDiv ... CwL"Arm Be�ne[li 0" Oil
751ibw
3Z7.52
WA
752ibW
C4171
1bx
753ibw
5,a5 M
1 b06
750M
SJM.75
1 b08
755bw
7J0+ IM
1 b06
75+6ib00
8,111M
libm
757)w
13 i21
1ibm
757)W
9,252.95
C bm
Avg. &d Area Fu7&ner s vm. ice,. h4
WA
1723.1'1
4U 2.59
563 AO
fimm &
nm.30
18M.10
O.M
Aug. W Area CwR ebra 1W. {au.to
CAC
3723.11
8325Sfi
13M29
2aMA7
27975.77
U759.97
U755.97
Cowin Mcmmereal Va. 4tu- k Cor C m +ave vw. I dU. ap
WA
371�.a3
�.59'5.70
5531.59
652432
7571%
1G969.94
♦M
M
3714.9a
8310A9
138 41.67
2M.1'9
27910.1.E
vM.48
39ti09.00

Phase I - Sediment Basin C
2.000 Disturbed Area (Acres)
4.8601 Peak Flow from 10-year Storm (cfs)
3600
Required Volume ft3
2114
Required Surface Area ft2
32.5
Suggested Width ft
65.0
Suggested Length ft
4667 Actual Volume ft3I I Okay
2413 Actual Surface Area ft2I Okay
20 Trial Weir Length ft
1 Trial Depth of Flow ft
60.0 Spillway Capacity cfs Okay
2 Skimmer Size (inches)
0.167 Head on Skimmer (feet)
1 Orifice Size (1/4 inch increments)
1.91 Dewatering Time (days)
Suggest about 3 days
image Storage Volume Table
Carlour Bev...
Contour Area...
hcremetal Deah ffl)
Avg. End Area Incremental Val _ (cu. ft)
Avg. End Area Cumulative Vol. (cu. fly
Conic Incremental Vol. (cu.ft)
Conic Cunt ve Vol- (cu. [t)
754.500
825.00
NIA
NIA
0.00
N/A
0.00
755.000
1.044.00
0.500
467.25
467.25
466.18
466.19
756.000
1.532.57
1.000
1288.28
1755.53
1280.49
1746.67
757.000
2.078.54
1.000
1805.55
3561.09
1798.63
3545.30
757.500
2.413.03
0.500
1122.89
4683.98
1121.85
4667.16
757.5M
4.749.16
0.000
0.00
4683.99
0.00
4667.16