20090597 Ver 6_2021-06-07 Stormwater & Erosion Control Report_20220304

CENTRAL CAROLINA
ENTERPRISE PARK
LOT #6
SANFORD, NC
STORMWATER AND EROSION CONTROL REPORT
JUNE 7, 2021
CE GROUP
301 GLENWOODAVENUE, SUITE220, RALEIGH, NC27603
Phone: [phone] License # C-1739
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TABLE OF CONTENTS
I. INTRODUCTION
II. METHODOLOGY
III. SUMMARY OF RUN-OFF RESULTS
IV. PLANNED EROSION CONTROL MEASURES
V. CONCLUSION
APPENDICES
A. PROJECT MAPS
1. VICINITY MAP
2. NRCS SOILS MAP
3. USGS QUADRANGLE MAP
4. FEMA FIRMETTE
B. EROSION CONTROL CALCULATIONS
C. STORM DRAINAGE CALCULATIONS
D. WET POND CALCULATIONS
E. PRECIPITATION DATA
F. DRAINAGE AREA MAPS
1. DRAINAGE AREA MAPS FOR EROSION CONTROL DESIGN
i. SKIMMER BASIN DESIGN DRAINAGE AREA MAP
ii. DIVERSION DITCH DESIGN DRAINAGE AREA MAP
2. DRAINAGE AREA MAPS FOR WET POND CALCULATIONS
i. PRE -DEVELOPED DRAINAGE AREA MAP
ii. POST -DEVELOPED DRAINAGE AREA MAP
3. DRAINAGE AREA MAPS FOR STORM DRAINAGE DESIGN
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I. INTRODUCTION
The proposed development is for a 117,133 sf shell building for a future Industrial use.
The site is located within the Central Carolina Enterprise Park (CCEP) and
specifically mid way down Enterprise Park Drive between Colon Road and Womack
Road in Sanford, North Carolina, south of Lots #1, #2, and #3, which are currently
being developed.
The site is bordered to the West by Enterprise Park Drive, to the South by CCEP Lot
#9, and to the East and North by undeveloped and residential parcels adjacent to the
extents of CCEP.
The general topography of the site is mildly steep, with elevations ranging from 265'
to 235' above mean sea level. The existing site area drains to the buffers on the
northern and southeastern borders of the site. The site almost entirely wooded area
and after construction will be composed of several different land covers including
impervious, grassed and wooded areas. Soils in the phase include Mayodan fine sandy
loam (MfD and MfE) - Hydrologic Soils Group B, Chewacla silt loam (Ch) -
Hydrologic Soils Group B/D, and Nanford Silt Loam (NaB) - Hydrologic Soils Group
B. The site falls within the FEMA Flood Insurance Rate Map 3710965500J dated
09/06/2006 and the 100 year flood plain is present on the southern border of the site,
near the buffered area and existing sanitary sewer easement. All disturbed area and
construction will take place outside of this flood plain. The site is within a WS-IV
watershed and must adhere to all rules and regulations regarding stormwater
discussed in this report.
The full buildout of the project will consist of a 117,133 sf building, with the
associated parking, truck delivery areas, utilities, storm drainage and stormwater
facilities. The sanitary sewer will tie into the existing sanitary sewer manhole on the
site.
Due to the proposed increase in impervious area generated by this site, a Wet Pond is
proposed to limit runoff. The Storm Drainage system and wet pond will be able to
capture the majority of the runoff generated by this site. The wet pond outlet drains
to the buffer area on the south side of the site.
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II. METHODOLOGY
To control runoff from the construction of the project, a wet pond is proposed to
capture a majority of the site. Sizing was based on controlling the 1-Year, 24 hour
storm. The pre -developed vs. post -developed calculations were performed using
Hydraflow Hydrographs 2004 to analyze these storms. The pond utilizes a riser
structure, outlet pipe, and outlet dissipator which drains into an existing buffer at the
edge of the property. The 100-year storm utilizes the emergency spillway but leaves
over a foot of freeboard from the top of the pond. The time of concentration for the
pre -developed and post -developed conditions were calculated using TR-55
methodology and the proposed and existing contours. The "C" values and "n" values
used in stormwater calculations were determined using the NCDEQ Stormwater
Design Manual. Curve Numbers (CN) were determined using the TR-55 manual. All
Stormwater Pond calculations are in Appendix D of this report. The drainage area
maps are located in Appendix F of this report.
The storm drainage was designed using Hydraflow Storm Sewers 2016 and Hydraflow
Express. The storm drainage can safely handle the 10-year storm for the Sanford,
North Carolina area. The Hydraflow software uses the rational equation, composite
"C" values and the drainage area to calculate the hydraulic grade line through the
pipe and/or pipe network. Pipe sizes are determined from the location of the
hydraulic grade line in the system to keep the HGL from exiting through the storm
structures on site or flowing out of the swale they are connected to.
The erosion control design for this site was created using information noted in
the North Carolina Sediment and Erosion Control Planning and Design Manual, latest
edition. All measures are designed for the 10-year frequency storm. All of the design
elements are noted in the attached spreadsheets in Appendix B.
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III. SUMMARY OF RUN-OFF RESULTS
Drainage Area
Pre -Developed
1-Year
Discharge
Post -Developed
1-Year Discharge
with Pond
Pond
Discharge
5.126 cfs
5.123 cfs
VI. PLANNED EROSION CONTROL MEASURES
Erosion Control Measures shall comply with the North Carolina Sediment and
Erosion Control Planning and Design Manual, latest edition.
Temporary Gravel Construction Entrance
A temporary Gravel Construction entrance will be constructed at the entrance to site
on the existing Enterprise Park Drive. This will be the only entrance that
construction vehicles may use to access the site.
In addition, during wet weather, vehicle tires may need to be washed in order to
prevent offsite tracking of sediment.
Temporary Silt Fence
Temporary silt fence will be placed along perimeter of the disturbed areas. This will
be done as necessary to keep any sediment from leaving the site and to protect the
existing vegetation.
Temporary Silt Fence Openings
Temporary Silt Fence Openings have been placed at strategic locations along the
proposed silt fence to allow for relief points for the silt fence.
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Temporary Riser Basin with Skimmer
One temporary Riser Basin with Skimmer's will be installed (TSB 1) in order
to trap sediment and prevent runoff from leaving the site too quickly. The skimmer
will connect to the proposed wet pond outlet structure as indicated in the
construction drawings. Upon stabilization of final grading, the skimmer basin will be
cleaned out and brought to final grade for the proposed Wet Pond.
Temporary Skimmer Basin
One temporary skimmer Basins are proposed in Stage 1 of the erosion control plan to
trap sediment during the clearing and grading operations.
Temporary Diversion Ditches
Temporary Diversion Ditches will be installed to convey runoff during construction
towards the Temporary Skimmer / Riser Basins. They will be lined with a temporary
erosion control matting, as specified on the Construction Drawings and will have
temporary stone check dams installed at every 2' vertical elevation drop.
Permanent Diversion Swale
A permanent diversion will be installed to convey runoff during construction from an
existing culvert running underneath Enterprise Park drive to the buffer / floodplain
area on the southern corner of the site. The swale will be lined with a permanent
erosion control matting, as specified on the Construction Drawings and will have
temporary stone check dams installed at every 2' vertical elevation drop.
Rolled Erosion Control Matting
Rolled erosion control matting (North American Green S150 Temporary Erosion
Control Matting) will be applied to any slopes that are 3:1 or steeper.
V. CONCLUSION
It is our professional opinion that the planned erosion control measures and
stormwater control measures that are planned for the development of this project will
adequately and safely meet the needs and requirements of the State of North Carolina
and the City of Sanford/Lee County. The stormwater control measures achieve
discharge control requirements for the project and will safely handle up to the 100-
year storm.
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APPENDICES
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APPENDIX A
PROJECT MAPS
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APPENDIX B
EROSION CONTROL CALCULATIONS
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APPENDIX C
STORM DRAINAGE CALCULATIONS
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APPENDIX D
WET POND CALCULATIONS
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APPENDIX E
PRECIPITATION DATA
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APPENDIX F
DRAINAGE AREA MAPS
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APPENDIX A
PROJECT MAPS
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U. S. DEPARTMENT OF AGRICULTURE
SOIL CONSERVATION SERVICE
0/11.01.11011.0
LEE COUNTY, NONi. CAROLINA NO. 1
2 MILOMETERS
SHEET NUMBER 2
LEE COUNTY. NORTH CAROLINA
SHEET NO. 2 OF 6

USDA United States
Department of
Agriculture
NRCS
Natural
Resources
Conservation
Service
A product of the National
Cooperative Soil Survey,
a joint effort of the United
States Department of
Agriculture and other
Federal agencies, State
agencies including the
Agricultural Experiment
Stations, and local
participants
Custom Soil Resource
Report for
Lee County,
North Carolina
CCEP Lot 6
February 17, 2021

Preface
Soil surveys contain information that affects land use planning in survey areas.
They highlight soil limitations that affect various land uses and provide information
about the properties of the soils in the survey areas. Soil surveys are designed for
many different users, including farmers, ranchers, foresters, agronomists, urban
planners, community officials, engineers, developers, builders, and home buyers.
Also, conservationists, teachers, students, and specialists in recreation, waste
disposal, and pollution control can use the surveys to help them understand,
protect, or enhance the environment.
Various land use regulations of Federal, State, and local governments may impose
special restrictions on land use or land treatment. Soil surveys identify soil
properties that are used in making various land use or land treatment decisions.
The information is intended to help the land users identify and reduce the effects of
soil limitations on various land uses. The landowner or user is responsible for
identifying and complying with existing laws and regulations.
Although soil survey information can be used for general farm, local, and wider area
planning, onsite investigation is needed to supplement this information in some
cases. Examples include soil quality assessments (http://www.nrcs.usda.gov/wps/
portal/nrcs/main/soils/health/) and certain conservation and engineering
applications. For more detailed information, contact your local USDA Service Center
(https://offices.sc.egov.usda.gov/locator/app?agency=nres) or your NRCS State Soil
Scientist (http://www.nres.usda.gov/wps/portal/nres/detail/soils/contactus/?
cid=nrcs142p2_053951).
Great differences in soil properties can occur within short distances. Some soils are
seasonally wet or subject to flooding. Some are too unstable to be used as a
foundation for buildings or roads. Clayey or wet soils are poorly suited to use as
septic tank absorption fields. A high water table makes a soil poorly suited to
basements or underground installations.
The National Cooperative Soil Survey is a joint effort of the United States
Department of Agriculture and other Federal agencies, State agencies including the
Agricultural Experiment Stations, and local agencies. The Natural Resources
Conservation Service (NRCS) has leadership for the Federal part of the National
Cooperative Soil Survey.
Information about soils is updated periodically. Updated information is available
through the NRCS Web Soil Survey, the site for official soil survey information.
The U.S. Department of Agriculture (USDA) prohibits discrimination in all its
programs and activities on the basis of race, color, national origin, age, disability,
and where applicable, sex, marital status, familial status, parental status, religion,
sexual orientation, genetic information, political beliefs, reprisal, or because all or a
part of an individual's income is derived from any public assistance program. (Not
all prohibited bases apply to all programs.) Persons with disabilities who require
2

alternative means for communication of program information (Braille, large print,
audiotape, etc.) should contact USDA's TARGET Center at [phone] (voice
and TDD). To file a complaint of discrimination, write to USDA, Director, Office of
Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or
call [phone] (voice) or [phone] (TDD). USDA is an equal opportunity
provider and employer.
3

Contents
Preface 2
How Soil Surveys Are Made 5
Soil Map 8
Soil Map 9
Legend 10
Map Unit Legend 11
Map Unit Descriptions 11
Lee County, North Carolina 13
Ch—Chewacla silt loam, 0 to 2 percent slopes, frequently flooded 13
MfD—Mayodan fine sandy loam, 8 to 15 percent slopes 14
MfE—Mayodan fine sandy loam, 15 to 25 percent slopes 15
NaB—Nanford silt loam, 2 to 8 percent slopes 16
Soil Information for All Uses 18
Soil Properties and Qualities 18
Soil Qualities and Features 18
Hydrologic Soil Group 18
References 23
4

How Soil Surveys Are Made
Soil surveys are made to provide information about the soils and miscellaneous
areas in a specific area. They include a description of the soils and miscellaneous
areas and their location on the landscape and tables that show soil properties and
limitations affecting various uses. Soil scientists observed the steepness, length,
and shape of the slopes; the general pattern of drainage; the kinds of crops and
native plants; and the kinds of bedrock. They observed and described many soil
profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The
profile extends from the surface down into the unconsolidated material in which the
soil formed or from the surface down to bedrock. The unconsolidated material is
devoid of roots and other living organisms and has not been changed by other
biological activity.
Currently, soils are mapped according to the boundaries of major land resource
areas (MLRAs). MLRAs are geographically associated land resource units that
share common characteristics related to physiography, geology, climate, water
resources, soils, biological resources, and land uses (USDA, 2006). Soil survey
areas typically consist of parts of one or more MLRA.
The soils and miscellaneous areas in a survey area occur in an orderly pattern that
is related to the geology, landforms, relief, climate, and natural vegetation of the
area. Each kind of soil and miscellaneous area is associated with a particular kind
of landform or with a segment of the landform. By observing the soils and
miscellaneous areas in the survey area and relating their position to specific
segments of the landform, a soil scientist develops a concept, or model, of how they
were formed. Thus, during mapping, this model enables the soil scientist to predict
with a considerable degree of accuracy the kind of soil or miscellaneous area at a
specific location on the landscape.
Commonly, individual soils on the landscape merge into one another as their
characteristics gradually change. To construct an accurate soil map, however, soil
scientists must determine the boundaries between the soils. They can observe only
a limited number of soil profiles. Nevertheless, these observations, supplemented
by an understanding of the soil -vegetation -landscape relationship, are sufficient to
verify predictions of the kinds of soil in an area and to determine the boundaries.
Soil scientists recorded the characteristics of the soil profiles that they studied. They
noted soil color, texture, size and shape of soil aggregates, kind and amount of rock
fragments, distribution of plant roots, reaction, and other features that enable them
to identify soils. After describing the soils in the survey area and determining their
properties, the soil scientists assigned the soils to taxonomic classes (units).
Taxonomic classes are concepts. Each taxonomic class has a set of soil
characteristics with precisely defined limits. The classes are used as a basis for
comparison to classify soils systematically. Soil taxonomy, the system of taxonomic
classification used in the United States, is based mainly on the kind and character
of soil properties and the arrangement of horizons within the profile. After the soil
5

Custom Soil Resource Report
scientists classified and named the soils in the survey area, they compared the
individual soils with similar soils in the same taxonomic class in other areas so that
they could confirm data and assemble additional data based on experience and
research.
The objective of soil mapping is not to delineate pure map unit components; the
objective is to separate the landscape into landforms or landform segments that
have similar use and management requirements. Each map unit is defined by a
unique combination of soil components and/or miscellaneous areas in predictable
proportions. Some components may be highly contrasting to the other components
of the map unit. The presence of minor components in a map unit in no way
diminishes the usefulness or accuracy of the data. The delineation of such
landforms and landform segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, onsite
investigation is needed to define and locate the soils and miscellaneous areas.
Soil scientists make many field observations in the process of producing a soil map.
The frequency of observation is dependent upon several factors, including scale of
mapping, intensity of mapping, design of map units, complexity of the landscape,
and experience of the soil scientist. Observations are made to test and refine the
soil -landscape model and predictions and to verify the classification of the soils at
specific locations. Once the soil -landscape model is refined, a significantly smaller
number of measurements of individual soil properties are made and recorded.
These measurements may include field measurements, such as those for color,
depth to bedrock, and texture, and laboratory measurements, such as those for
content of sand, silt, clay, salt, and other components. Properties of each soil
typically vary from one point to another across the landscape.
Observations for map unit components are aggregated to develop ranges of
characteristics for the components. The aggregated values are presented. Direct
measurements do not exist for every property presented for every map unit
component. Values for some properties are estimated from combinations of other
properties.
While a soil survey is in progress, samples of some of the soils in the area generally
are collected for laboratory analyses and for engineering tests. Soil scientists
interpret the data from these analyses and tests as well as the field -observed
characteristics and the soil properties to determine the expected behavior of the
soils under different uses. Interpretations for all of the soils are field tested through
observation of the soils in different uses and under different levels of management.
Some interpretations are modified to fit local conditions, and some new
interpretations are developed to meet local needs. Data are assembled from other
sources, such as research information, production records, and field experience of
specialists. For example, data on crop yields under defined levels of management
are assembled from farm records and from field or plot experiments on the same
kinds of soil.
Predictions about soil behavior are based not only on soil properties but also on
such variables as climate and biological activity. Soil conditions are predictable over
long periods of time, but they are not predictable from year to year. For example,
soil scientists can predict with a fairly high degree of accuracy that a given soil will
have a high water table within certain depths in most years, but they cannot predict
that a high water table will always be at a specific level in the soil on a specific date.
After soil scientists located and identified the significant natural bodies of soil in the
survey area, they drew the boundaries of these bodies on aerial photographs and
6

Custom Soil Resource Report
identified each as a specific map unit. Aerial photographs show trees, buildings,
fields, roads, and rivers, all of which help in locating boundaries accurately.
7

Soil Map
The soil map section includes the soil map for the defined area of interest, a list of
soil map units on the map and extent of each map unit, and cartographic symbols
displayed on the map. Also presented are various metadata about data used to
produce the map, and a description of each soil map unit.
8

35° 33' 33" N o_
35° 33' 14" N
Custom Soil Resource Report
Soil Map
666360 666430 666500 666570 666640 666710
Map Scale: 1:2,890 if printed on A portrait (8.5" x 11") sheet.
40 80
160
Feet
0 100 200 400 600
Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 17N WGS84
Meters
240
61
9

Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
0 Soil Map Unit Polygons
P. 0 Soil Map Unit Lines
Soil Map Unit Points
Special Point Features
Blowout
la Borrow Pit
Clay Spot
• Closed Depression
• Gravel Pit
4 Gravelly Spot
• Landfill
Lava Flow
Marsh or swamp
an4 Mine or Quarry
• Miscellaneous Water
• Perennial Water
• Rock Outcrop
▪ Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
oa Sodic Spot
▪ Spoil Area
0 Stony Spot
tiTi Very Stony Spot
Wet Spot
▪ Other
+� Special Line Features
Water Features
Streams and Canals
Transportation
H-F Rails
1.10 Interstate Highways
wrapUS Routes
Major Roads
Local Roads
Background
1. Aerial Photography
The soil surveys that comprise your AOI were mapped at
1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Lee County, North Carolina
Survey Area Data: Version 18, Jun 4, 2020
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Jul 28, 2019—Jul 30,
2019
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.
10

Custom Soil Resource Report
Map Unit Legend
Map Unit Symbol
Map Unit Name
Acres in AOI
Percent of AOI
Ch
Chewacla silt loam, 0 to 2
percent slopes, frequently
flooded
5.1
4.0
24.2%
MfD
Mayodan fine sandy loam, 8 to
15 percent slopes
19.0%
MfE
Mayodan fine sandy loam, 15 to
25 percent slopes
8.5
39.8%
NaB
Nanford silt loam, 2 to 8 percent
slopes
3.6
17.1%
Totals for Area of Interest
21.3
100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the
soils or miscellaneous areas in the survey area. The map unit descriptions, along
with the maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the
landscape, however, the soils are natural phenomena, and they have the
characteristic variability of all natural phenomena. Thus, the range of some
observed properties may extend beyond the limits defined for a taxonomic class.
Areas of soils of a single taxonomic class rarely, if ever, can be mapped without
including areas of other taxonomic classes. Consequently, every map unit is made
up of the soils or miscellaneous areas for which it is named and some minor
components that belong to taxonomic classes other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting, or dissimilar, components. They
generally are in small areas and could not be mapped separately because of the
scale used. Some small areas of strongly contrasting soils or miscellaneous areas
are identified by a special symbol on the maps. If included in the database for a
given area, the contrasting minor components are identified in the map unit
descriptions along with some characteristics of each. A few areas of minor
components may not have been observed, and consequently they are not
mentioned in the descriptions, especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
11

Custom Soil Resource Report
The presence of minor components in a map unit in no way diminishes the
usefulness or accuracy of the data. The objective of mapping is not to delineate
pure taxonomic classes but rather to separate the landscape into landforms or
landform segments that have similar use and management requirements. The
delineation of such segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, however,
onsite investigation is needed to define and locate the soils and miscellaneous
areas.
An identifying symbol precedes the map unit name in the map unit descriptions.
Each description includes general facts about the unit and gives important soil
properties and qualities.
Soils that have profiles that are almost alike make up a soil series. Except for
differences in texture of the surface layer, all the soils of a series have major
horizons that are similar in composition, thickness, and arrangement.
Soils of one series can differ in texture of the surface layer, slope, stoniness,
salinity, degree of erosion, and other characteristics that affect their use. On the
basis of such differences, a soil series is divided into soil phases. Most of the areas
shown on the detailed soil maps are phases of soil series. The name of a soil phase
commonly indicates a feature that affects use or management. For example, Alpha
silt loam, 0 to 2 percent slopes, is a phase of the Alpha series.
Some map units are made up of two or more major soils or miscellaneous areas.
These map units are complexes, associations, or undifferentiated groups.
A complex consists of two or more soils or miscellaneous areas in such an intricate
pattern or in such small areas that they cannot be shown separately on the maps.
The pattern and proportion of the soils or miscellaneous areas are somewhat similar
in all areas. Alpha -Beta complex, 0 to 6 percent slopes, is an example.
An association is made up of two or more geographically associated soils or
miscellaneous areas that are shown as one unit on the maps. Because of present
or anticipated uses of the map units in the survey area, it was not considered
practical or necessary to map the soils or miscellaneous areas separately. The
pattern and relative proportion of the soils or miscellaneous areas are somewhat
similar. Alpha -Beta association, 0 to 2 percent slopes, is an example.
An undifferentiated group is made up of two or more soils or miscellaneous areas
that could be mapped individually but are mapped as one unit because similar
interpretations can be made for use and management. The pattern and proportion
of the soils or miscellaneous areas in a mapped area are not uniform. An area can
be made up of only one of the major soils or miscellaneous areas, or it can be made
up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example.
Some surveys include miscellaneous areas. Such areas have little or no soil
material and support little or no vegetation. Rock outcrop is an example.
12

Custom Soil Resource Report
Lee County, North Carolina
Ch—Chewacla silt loam, 0 to 2 percent slopes, frequently flooded
Map Unit Setting
National map unit symbol: 2mz3q
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 59 to 66 degrees F
Frost -free period: 200 to 240 days
Farmland classification: Prime farmland if drained and either protected from flooding
or not frequently flooded during the growing season
Map Unit Composition
Chewacla and similar soils: 87 percent
Minor components: 13 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Chewacla
Setting
Landform: Flood plains
Down -slope shape: Concave
Across -slope shape: Linear
Parent material: Loamy alluvium derived from igneous and metamorphic rock
Typical profile
A - 0 to 4 inches: silt loam
Bw1 - 4 to 26 inches: silty clay loam
Bw2 - 26 to 38 inches: loam
Bw3 - 38 to 60 inches: clay loam
C - 60 to 80 inches: loam
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Somewhat poorly drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: About 6 to 24 inches
Frequency of flooding: FrequentNone
Frequency of ponding: None
Available water capacity: High (about 11.5 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4w
Hydrologic Soil Group: B/D
Hydric soil rating: No
Minor Components
Congaree
Percent of map unit: 8 percent
Landform: Flood plains
13

Custom Soil Resource Report
Down -slope shape: Linear
Across -slope shape: Linear
Hydric soil rating: No
Wehadkee, undrained
Percent of map unit: 5 percent
Landform: Depressions on flood plains
Down -slope shape: Concave
Across -slope shape: Linear
Hydric soil rating: Yes
MfD—Mayodan fine sandy loam, 8 to 15 percent slopes
Map Unit Setting
National map unit symbol: 3t65
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 59 to 66 degrees F
Frost -free period: 200 to 240 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Mayodan and similar soils: 85 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Mayodan
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Parent material: Residuum weathered from mudstone and/or shale and siltstone
and/or sandstone
Typical profile
Ap - 0 to 6 inches: fine sandy loam
BE - 6 to 9 inches: sandy clay loam
Bt - 9 to 33 inches: clay
BC - 33 to 40 inches: sandy clay loam
C - 40 to 80 inches: sandy clay loam
Properties and qualities
Slope: 8 to 15 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
14

Custom Soil Resource Report
Frequency of flooding: None
Frequency of ponding: None
Sodium adsorption ratio, maximum: 7.0
Available water capacity: High (about 9.3 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Hydric soil rating: No
MfE—Mayodan fine sandy loam, 15 to 25 percent slopes
Map Unit Setting
National map unit symbol: 3t66
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 59 to 66 degrees F
Frost -free period: 200 to 240 days
Farmland classification: Not prime farmland
Map Unit Composition
Mayodan and similar soils: 80 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Mayodan
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Parent material: Residuum weathered from mudstone and/or shale and siltstone
and/or sandstone
Typical profile
Ap - 0 to 6 inches: fine sandy loam
BE - 6 to 9 inches: sandy clay loam
Bt - 9 to 33 inches: clay
BC - 33 to 40 inches: sandy clay loam
C - 40 to 80 inches: sandy clay loam
Properties and qualities
Slope: 15 to 25 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: High
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
15

Custom Soil Resource Report
Frequency of ponding: None
Sodium adsorption ratio, maximum: 7.0
Available water capacity: High (about 9.3 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: B
Hydric soil rating: No
NaB—Nanford silt loam, 2 to 8 percent slopes
Map Unit Setting
National map unit symbol: 2mz3s
Elevation: 200 to 650 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 59 to 66 degrees F
Frost -free period: 200 to 240 days
Farmland classification: All areas are prime farmland
Map Unit Composition
Nanford and similar soils: 85 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Nanford
Setting
Landform: Interfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from metavolcanics and/or argillite
Typical profile
Ap - 0 to 6 inches: silt loam
Bt - 6 to 31 inches: silty clay
BC - 31 to 41 inches: silty clay loam
C - 41 to 56 inches: silt loam
Cr - 56 to 80 inches: weathered bedrock
Properties and qualities
Slope: 2 to 8 percent
Depth to restrictive feature: 40 to 60 inches to paralithic bedrock
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Very low to high (0.00
to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water capacity: Moderate (about 8.0 inches)
16

Custom Soil Resource Report
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Hydric soil rating: No
17

Soil Information for All Uses
Soil Properties and Qualities
The Soil Properties and Qualities section includes various soil properties and
qualities displayed as thematic maps with a summary table for the soil map units in
the selected area of interest. A single value or rating for each map unit is generated
by aggregating the interpretive ratings of individual map unit components. This
aggregation process is defined for each property or quality.
Soil Qualities and Features
Soil qualities are behavior and performance attributes that are not directly
measured, but are inferred from observations of dynamic conditions and from soil
properties. Example soil qualities include natural drainage, and frost action. Soil
features are attributes that are not directly part of the soil. Example soil features
include slope and depth to restrictive layer. These features can greatly impact the
use and management of the soil.
Hydrologic Soil Group
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.
18

Custom Soil Resource Report
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.
19

35° 33' 33" N o_
35° 33' 14" N
Custom Soil Resource Report
Map —Hydrologic Soil Group
666360 666430 666500
Map Scale: 1:2,890 if printed on A portrait (8.5" x 11") sheet.
40 80
160
Feet
0 100 200 400 600
Map projedion: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 17N WGS84
666570
666570
Meters
240
666710
666710
0
20

Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Rating Polygons
0
I
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Soil Rating Lines
✓ r A
0 r C
• 0 C/D
✓ r D
✓ r Not rated or not available
Soil Rating Points
O A
O ND
■ B
▪ B/D
o
O C/D
O
O Not rated or not available
Water Features
Streams and Canals
Transportation
F_Fi. Rails
•%01 Interstate Highways
US Routes
Major Roads
Local Roads
Background
® Aerial Photography
The soil surveys that comprise your AOI were mapped at
1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Lee County, North Carolina
Survey Area Data: Version 18, Jun 4, 2020
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Jul 28, 2019—Jul 30,
2019
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.
21

Custom Soil Resource Report
Table —Hydrologic Soil Group
Map unit symbol
Map unit name
Rating
Acres in AOI
Percent of AOI
Ch
Chewacla silt loam, 0 to
2 percent slopes,
frequently flooded
B/D
5.1
24.2%
19.0%
MfD
Mayodan fine sandy
loam, 8 to 15 percent
slopes
B
4.0
MfE
Mayodan fine sandy
loam, 15 to 25 percent
slopes
B
8.5
39.8%
NaB
Nanford silt loam, 2 to 8
percent slopes
B
3.6
17.1%
Totals for Area of Interest
21.3
100.0%
Rating Options —Hydrologic Soil Group
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie -break Rule: Higher
22

References
American Association of State Highway and Transportation Officials (AASHTO).
2004. Standard specifications for transportation materials and methods of sampling
and testing. 24th edition.
American Society for Testing and Materials (ASTM). 2005. Standard classification of
soils for engineering purposes. ASTM Standard D2487-00.
Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of
wetlands and deep -water habitats of the United States. U.S. Fish and Wildlife
Service FWS/OBS-79/31.
Federal Register. July 13, 1994. Changes in hydric soils of the United States.
Federal Register. September 18, 2002. Hydric soils of the United States.
Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric
soils in the United States.
National Research Council. 1995. Wetlands: Characteristics and boundaries.
Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service.
U.S. Department of Agriculture Handbook 18. http://www.nres.usda.gov/wps/portal/
nres/detail/national/soils/?cid=nres 142p2_054262
Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for
making and interpreting soil surveys. 2nd edition. Natural Resources Conservation
Service, U.S. Department of Agriculture Handbook 436. http://
www.nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053577
Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of
Agriculture, Natural Resources Conservation Service. http://
www. nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053580
Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and
Delaware Department of Natural Resources and Environmental Control, Wetlands
Section.
United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of
Engineers wetlands delineation manual. Waterways Experiment Station Technical
Report Y-87-1.
United States Department of Agriculture, Natural Resources Conservation Service.
National forestry manual. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/
home/?cid=nres142p2_053374
United States Department of Agriculture, Natural Resources Conservation Service.
National range and pasture handbook. http://www.nrcs.usda.gov/wps/portal/nrcs/
detail/national/landuse/rangepasture/?cid=stelprdb1043084
23

Custom Soil Resource Report
United States Department of Agriculture, Natural Resources Conservation Service.
National soil survey handbook, title 430-VI. http://www.nres.usda.gov/wps/portal/
nres/detail/soils/scientists/?cid=nres142p2_054242
United States Department of Agriculture, Natural Resources Conservation Service.
2006. Land resource regions and major land resource areas of the United States,
the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook
296. http://www.nres.usda.gov/wps/portal/nres/detail/national/soils/?
cid=nres142p2_053624
United States Department of Agriculture, Soil Conservation Service. 1961. Land
capability classification. U.S. Department of Agriculture Handbook 210. http://
www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf
24

PARTME
T
OF THE
USGS U.S. DEU.S. GEOLOGICAL SURVEY
ERIOR
science for a changing world
The National Map
US Topo
COLON QUADRANGLE
NORTH CAROLINA
7.5-MINUTE SERIES
-79.2500'
35.6250'
3943 Doom N
42
41
40
39
38
37
36
35
34
33
32
31
30
35.5000' 59
-79.2500°
659000m E
60
60
61
Produced by the United States Geological Survey
North American Datum of 1983 (NAD83)
World Geodetic System of 1984 (WGS84). Projection and
1 000-meter grid:Universal Transverse Mercator, Zone 175
This map is not a legal document. Boundaries may be
generalized for this map scale. Private lands within government
reservations may not be shown. Obtain permission before
entering private lands.
Imagery NAIP, June 2016 - November 2016
Roads U.S. Census Bureau, 2016
Names GNIS, 1980 - 2017
Hydrography National Hydrography Dataset, 1899 - 2018
Contours National Elevation Dataset, 2008
Boundaries Multiple sources; see metadata file 2017 - 2018
61
62
M.
8°57'
159 MILS
62
1°3'
19 MILS
UTM GRID AND 2019 MAGNETIC NORTH
DECLINATION AT CENTER OF SHEET
U.S. National Grid
100,000 - m Square ID
63
1
63
0.5
0
64
64
65
65
SCALE 1:24 000
KILOMETERS 1 2
66
1000 500 0 METERS 1000 2000
1 0.5 0 1
MILES
1000 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
FEET
CONTOUR INTERVAL 10 FEET
NORTH AMERICAN VERTICAL DATUM OF 1988
66
67
NEjTH
CAROLINA
QUADRANGLE LOCATION
1
2
3
4
5
67
1 Slier City NE
2 Pittsboro
3 Merry Oaks
4 Goldston
5 Moncure
6 White Hill
7 Sanford
8 Broadway
Local Connector
Local Road
4WD
68
68
Expressway
Secondary Hwy
Ramp
69
69
ROAD CLASSIFICATION
-79.1250°
35.6250°
67000omE
35.5000'
-79.1250"
- M cc
CD co
CO CZ
- rY
• Interstate Route US Route O State Route
N
�DX
o(-9
- M�
(DO
Z
LL
W
COLON, NC - v
2019 z z
Wetlands FWS National Wetlands Inventory 1983
PV
Grid Zone Designation
17S
This map was produced to conform with the
National Geospatial Program US Topo Product Standard, 2011.
A metadata file associated with this product is draft version 0.6.18
6
7
8
ADJOINING QUADRANGLES

National Flood Hazard Layer FIRMette
FEMA
Legend
79°10'5"W 35°33'39"N
0 250 500
Feet
1,000 1,500 2,000
Basemap: USGS National Map: Orthoimagery: Data refreshed October, 2020
79°9'27"W 35°33'10"N
1:6,000
SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT
SPECIAL FLOOD
HAZARD AREAS
Without Base Flood Elevation (BFE)
Zone A, V, A99
With BFE or Depth Zone AE, AO, AH, VE, AR
Regulatory Floodway
OTHER AREAS OF
FLOOD HAZARD
OTHER AREAS
GENERAL
STRUCTURES
OTHER
FEATURES
MAP PANELS
0.2% Annual Chance Flood Hazard, Areas
of 1% annual chance flood with average
depth less than one foot or with drainage
areas of less than one square mile zone x
Future Conditions 1% Annual
Chance Flood Hazard zonex
Area with Reduced Flood Risk due to
Levee. See Notes. zone x
Area with Flood Risk due to Leveezone D
NO SCREEN Area of Minimal Flood Hazard zonex
Effective LOMRs
Area of Undetermined Flood Hazard zone D
- -- — - Channel, Culvert, or Storm Sewer
I I 1 1 1 1 1 Levee, Dike, or Floodwall
20.2
Cross Sections with 1% Annual Chance
t� s Water Surface Elevation
8 — — — Coastal Transect
^-^^^ 5fa•^^^^. Base Flood Elevation Line (BFE)
Limit of Study
Jurisdiction Boundary
Coastal Transect Baseline
Profile Baseline
Hydrographic Feature
Digital Data Available
No Digital Data Available
Unmapped
The pin displayed on the map is an approximate
point selected by the user and does not represent
an authoritative property location.
This map complies with FEMA's standards for the use of
digital flood maps if it is not void as described below.
The basemap shown complies with FEMA's basemap
accuracy standards
The flood hazard information is derived directly from the
authoritative NFHL web services provided by FEMA. This map
was exported on 2/17/2021 at 1:07 PM and does not
reflect changes or amendments subsequent to this date and
time. The NFHL and effective information may change or
become superseded by new data over time.
This map image is void if the one or more of the following map
elements do not appear: basemap imagery, flood zone labels,
legend, scale bar, map creation date, community identifiers,
FIRM panel number, and FIRM effective date. Map images for
unmapped and unmodernized areas cannot be used for
regulatory purposes.

APPENDIX B
EROSION CONTROL CALCULATIONS
PROVIDING CIVIL /SITE & INFRASTRUCTURE CONSULTING SERVICES SINCE 1998

Project
Project No.
TEMPORARY SKIMMER BASIN SIZING
CCEP - Lot #6
200-107
Skimmer Basin ID TSB #1
Drainage Area Data
Area (square feet) Area (acres) Rational 'c'
Calcs by JCH
Date 6/1/2021
Disturbed area
Undisturbed wooded area
Undisturbed grassy area
Impervious Area
Total drainage area to basin
Composite Rational 'c'
Calculate Rainfall Intensity
75653 sf
0 sf
0 sf
0 sf
1.74 ac.
0.00 ac.
0.00 ac.
0.00 ac.
1.74 ac.
0.50
0.50
0.15
0.15
0.95
IDF curves for Sanford, NC
Return Period
g
h
Intensity
10
195
22
7.67 in/hr
25
232
23
8.45 in/hr
Runoff Calculations
Rainfall
Runoff
10-year storm
25-year storm
Skimmer Basin Design Data and Constraints
7.67 in/hr
8.45 in/hr
6.7 cfs
7.3 cfs
Required skimmer basin volume
Required skimmer basin surface area
Skimmer Basin Dimensions
1,800 cubic feet per disturbed acre
435 x Q(10)
Bottom length
Bottom width
Bottom Elevation
Sediment depth
Freeboard (from sediment depth)
Side slopes
Spillway length
Height of berm
Top of basin length
Top of basin width
Top of basin elevation
Skimmer Basin Data
80.0 ft
40.0 ft
252.0 ft
2.0 ft
1.5 ft
3.0 H:1V
20.0 ft
3.5 ft
101.0 ft
61.0 ft
255.5 ft
Required Provided
Sediment storage volume 3126 cu. ft. 7930 cu. ft.
Sediment surface area 2900 sq. ft. 4780 sq. ft.
Sediment storage depth 3.5 ft. (max.) 2.0 ft
Basin bottom length to width ratio 2.0L:1 W (min) 2.0L:1 W
Spillway length 8.0 ft. (min) 20.0 ft
Spillway elevation 254.0 ft. (min) 254.0 ft
10-Year flow depth over spillway 0.50 ft. (max) 0.23 ft
Freeboard at 10-Year discharge 1.00 ft. (min) 1.27 ft
Skimmer Size 2 2
Skimmer Orifice Size 1.8 1.8
Draw Down Time 2-5 Days 3 Days
Note:
Calculations based on NC Sediment and Erosion Control Manual

Calculate Skimmer Size
Basin Volume in Cubic Feet
Days to Drain*
`In NC assume 3 days to drain
3,126
3
Cu.Ft
Days
Skimmer Size
Orifice Radius
Orifice Diameter
1.5
0.6
1.2
Inch
Inch[es]
Inch[es]

SKIMMER BASIN SIZING
Project CCEP - Lot #8 Calcs by JCH
Project No. 200-107 Date 2/3/2021
Skimmer Basin ID TRB #1 (Stage 1)
Drainage Area Data
Area Rational'C't
Disturbed area
Undisturbed wooded area
Undisturbed grassy area
Impervious Area
5.13 ac.
0.00 ac.
0.00 ac.
0.00 ac.
Total drainage area to basin 5.13 ac.
Composite Rational 'c'
Calculate Rainfall Intensity
0.50
0.50
0.15
0.15
0.95
IDF curves for Sanford, NC
Return Period
g
h
Intensity
10
195
22
7.67 in/hr
25
232
23
8.45 in/hr
Runoff Calculations
Rainfall
Runoff
10-year storm
25-year storm
7.67 in/hr 19.7 cfs
8.45 in/hr 21.7 cfs
Skimmer Basin Design Data and Constraints
Required skimmer basin volume 1,800 cubic feet per disturbed acre
Required skimmer basin surface area 435 square feet per 1 cfs of Q(10)
Skimmer Stage/Storage
Proposed Elevation (feet)
Stage
(feet)
Contour Area
(sf)
Average
Contour Area
(sf)
Incremental Contour
Volume (cf)
Accumulated
Contour Volume
(ct)
235.00
0.0
7,181
---
---
---
236.00
1.0
8,563 7872
7872
7872
237.00
2.0
10,000 9282
9282
17154
238.00
3.0
11,495 10748
10748
27901
239.00
4.0
13,046 12271
12271
40172
240.00
5.0
14,654 13850
13850
54022
241.00
6.0
16,318 15486
15486
69508
241.50
6.5
18,038 17178
8589
78097
242.00
7.0
19,816 18927
9464
87560
243.00
8.0
21,649 20733
20733
108293
243.25
8.3
22,119 21884
5471
113764
244.00
9.0
23,540 22830
17122
130886
245.00
10.0
25,487 24514
24514
155399
246.00
11.0
27,490 26489
26489
181888
247.00
12.0
29,550 28520
28520
210408
248.00
13.0
31,667 30609
30609
241016
Freeboard (from sediment depth)
Skimmer Basin Data
4.8
Required Provided
Sediment storage volume 9234 cu. ft. 113764 cu. ft.
Sediment surface area 8560 sq. ft. 22119 sq. ft.
Sediment storage depth 9.5 ft. (max.) 8.3 ft
Spillway length 20.0 ft. (min) 20.0 ft
10-Year flow depth over spillway 0.50 ft. (max) 0.44 ft
Freeboard at 10-Year discharge 1.00 ft. (min) 4.31 ft
Skimmer Size 2 2
Skimmer Orifice Size 1.9 1.9
Draw Down Time 2-5 Days 3 Days
1. Reference for Rational Coefficients:
Malcom, H. Rooney, Elements of Urban Stormwater Design, NCSU 1999,
Chapter 2 (Hydrologic Estimates)
Note:
Calculations based on NC Sediment and Erosion Control Manual

Calculate Skimmer Size
Basin Volume in Cubic Feet
Days to Drain*
`In NC assume 3 days to drain
9,234
3
Cu.Ft
Days
Skimmer Size
Orifice Radius
Orifice Diameter
2.0
0.9
1.9
Inch
Inch[es]
Inch[es]

SKIMMER BASIN SIZING
Project CCEP - Lot 96 Calcs by JCH
Project No. 200-107 Date 6/1/2021
Skimmer Basin ID
TRB #1 (Stage 2)
Drainage Area Data Area Rational 'C't
Disturbed area
Undisturbed wooded area
Undisturbed grassy area
Impervious Area
10.92 ac.
0.10 ac.
0.00 ac.
0.00 ac.
Total drainage area to basin 11.01 ac.
Composite Rational 'c' 0.50
Time of Concentration
0.50
0.15
0.15
0.95
Use Kirpich (USBR, 1974) equation to calculate time of concentration - t(c)
K= 1.1
Length of flow path = 1324 feet
Height of watershed = 30 feet
Calculated t(c) = 9.4 minutes
Minimum t(c) = 5.0 minutes
Time of concentration = 9.4 minutes
Calculate Rainfall Intensity
K Values
Overland on grassed surfaces:
2.0
Overland on paved surfaces:
0.4
Channel in natural channels:
1.0
Channel in mixed urban setting:
1.1
Channel in paved pipes or channels:
0.2
IDF curves for Sanford, NC
Return Period
g
h
Intensity
10
195
22
7.67 in/hr
25
232
23
8.45 in/hr
Runoff Calculations
Rainfall
Runoff
10-year storm
25-year storm
7.67 in/hr 42.0 cfs
8.45 in/hr 46.2 cfs
Skimmer Basin Design Data and Constraints
Required skimmer basin volume 1,800 cubic feet per disturbed acre
Required skimmer basin surface area 435 square feet per 1 cfs of Q(10)
Skimmer Stage/Storage
Proposed Elevation (feet)
Stage
(feet)
Contour Area
(sf)
Average
Contour Area
(st)
Incremental Contour
Volume (ct)
Accumulated
Contour Volume
(ct)
235.00
0.0
7,181
---
---
---
236.00
1.0
8,563 7,872
7,872
7,872
237.00
2.0
10,000 9,282
9,282
17,154
238.00
3.0
11,495 10,748
10,748
27,901
239.00
4.0
13,046 12,271
12,271
40,172
240.00
5.0
14,654 13,850
13,850
54,022
241.00
6.0
16,318 15,486
15,486
69,508
241.50
6.5
18,038 17,178
8,589
78,097
242.00
7.0
19,816 18,927
9,464
87,560
243.00
8.0
21,649 20,733
20,733
108,293
243.25
8.3
22,119 21,884
5,471
113,764
244.00
9.0
23,540 22,830
17,122
130,886
245.00
10.0
25,487 23,803
41,655
172,541
246.00
11.0
27,490 26,489
26,489
199,029
247.00
12.0
29,550 28,520
28,520
227,549
248.00
13.0
31,667 30,609
30,609
258,158
Freeboard (from sediment depth)
Skimmer Basin Data
4.8
Required Provided
Sediment storage volume 19650 cu. ft. 113764 cu. ft.
Sediment surface area 18260 sq. ft. 22119 sq. ft.
Sediment storage depth 8.3 ft 8.3 ft
Spillway length 20.0 ft. (min) 20.0 ft
10-Year flow depth over spillway 0.50 ft. (max) 0.74 ft
Freeboard at 10-Year discharge 1.00 ft. (min) 4.01 ft
Skimmer Size 3 3
Skimmer Orifice Size 2.9 2.9
Draw Down Time 2-5 Days 3 Days
1. Reference for Rational Coefficients:
Malcom, H. Rooney, Elements of Urban Stormwater Design, NCSU 1999,
Chapter 2 (Hydrologic Estimates)
Note:
Calculations based on NC Sediment and Erosion Control Manual

Calculate Skimmer Size
Basin Volume in Cubic Feet
Days to Drain*
`In NC assume 3 days to drain
19,650
3
Cu.Ft
Days
Skimmer Size
Orifice Radius
Orifice Diameter
3.0
1.2
2.5
Inch
Inch[es]
Inch[es]

Std. C-Values
Disturbed 0.5
Woods 0.5
Paved 0.9
Grassed 0.5
Project Name: CCEP - Lot #9
Project Number: 200-107
Date: 2/19/2021
Location: Sanford, NC
Design Storm Return Year: 10
Rainfall Density: 7.67
Designer: JCH
Project Name:
Project Number:
Date:
Location:
Design Storm Return Year:
Rainfall Density:
Designer:
CCEP - Lot#9
200-107
2/19/2021
Sanford, NC
10
7.67
JCH
Temporary Swale Calculations
Swale Calculations
Drainage Area Data
Swale Data
Additional Flow
Swale Linings
Swale
ID
Disturbed
Woods
Paved
Grass
C
Upper
Elev.
Lower
Elev.
Ditch
Length
Slope
Bottom
Width
(B)
Side
Slope
Depth d
(guess)
D
A
P
R = A/P
Velocity
W
O
(CIA)
O
(Compare)
Ditch/Pipes
Flow
Lining Type (or equal)
Mannings
n
Shear
Stress
(Max)
Velocity
(Max)
Check
Shear
Stress
Shear
OK?
Velocity
OK?
(AC)
(AC)
(AC)
(AC)
(ft)
(ft)
(xa)
(ft)
(ft)
(sf)
(ft)
(fps)
(ft)
(cfs)
(cfs)
(cfs)
(T=yds)
TDS-1
3.39
0.50
257.00
245.00
804.00
1.49%
2
2
0.7182
1.2
2.468
5.212
0.474
5.3
6.8
13.00
13.00
Eronet D5150
0.021
1.75
6.00
0.67
YES
YES
TDS-2
0.43
0.50
254.00
245.00
234.00
3.85%
2
2
0.3080
1.0
0.806
3.377
0.239
2.0
6.0
1.65
1.65
Eronet DS75
0.055
1.55
5.00
0.74
YES
YES
TDS-3
0.13
0.50
256.00
253.50
104.00
2.40%
2
2
0.0990
1.0
0.218
2.443
0.089
2.3
6.0
0.50
0.18
Eronet DS75
0.055
1.55
5.00
0.15
YES
YES
TDS-4
0.83
0.50
262.00
253.50
478.00
1.78%
2
2
0.3220
1.0
0.851
3.440
0.247
3.7
6.0
3.18
3.18
Eronet DS75
0.021
1.55
5.00
0.36
YES
YES
ri

Permanent Swale Calculations
Swale Calculations
Drainage Area Data
Swale Data
Additional Flow
Swale Linings
Swale
ID
Woods
Paved
Grass
C
Upper
Elev.
Lower
Elev.
Ditch
Length
Slope
Bottom
Width
(B)
Side
Slope
Depth d
(guess)
D
A
P
R = A/P
Velocity
W
Q
(CIA)
Q
(Compare)
Ditch/Pipes
Flow
Lining Type
Mannings
n
Shear
Stress
(Max)
Velocity
(Max)
Check
Shear
Stress
Shear
OK?
Velocity
OK?
(AC)
(AC)
(AC)
(ft)
(ft)
(x:1)
(ft)
(ft)
(sf)
(ft)
(fps)
(ft)
(cfs)
(cfs)
(cfs)
(T=yds)
PDS-1
15.34
0.56
3.47
0.51
255.00
241.00
983.00
1.42%
3
3
1.5937
2.1
12.401
13.079
0.948
6.1
15.6
76.00
76.00
Eronet P300
0.028
8.00
16.00
1.42
YES
YES
1,

APPENDIX C
STORM DRAINAGE CALCULATIONS
PROVIDING CIVIL /SITE & INFRASTRUCTURE CONSULTING SERVICES SINCE 1998

Hydraflow Storm Sewers Extension for Autodesk® Civil 3D® Plan
20
21
19
11
23
10
22 9
18
17
16
15
14
13
8
12
2
7
1
3
4
Outfall
6
5
Project File: 2021-06-01 Storm Drainagr.stm
Number of lines: 23
Date: 6/2/2021
Storm Sewers v2021.00

Storm Sewer Inventory Report
Page 1
Line
No.
Alignment
Flow Data
Physical Data
Line ID
Dnstr
Line
No.
Line
Length
(ft)
Defl
angle
(deg)
Junc
Type
Known
Q
(cfs)
Drng
Area
(ac)
Runoff
Coeff
(C)
Inlet
Time
(min)
Invert
El Dn
(ft)
Line
Slope
(%)
Invert
El Up
(ft)
Line
Size
(in)
Line
Shape
N
Value
(n)
J-Loss
Coeff
(K)
Inlet/
Rim El
(ft)
1
End
62.758
-154.750
MH
0.00
0.00
0.00
0.0
234.50
1.12
235.20
36
Cir
0.013
1.00
249.50
Al TO FES A
2
1
73.045
90.000
DrGrt
0.00
0.28
0.81
5.0
235.70
2.60
237.60
30
Cir
0.013
1.10
256.25
A14 TO Al
3
2
31.984
43.752
DrGrt
0.00
0.09
0.54
5.0
237.80
1.25
238.20
30
Cir
0.013
1.10
256.25
Al TO A14
4
3
160.012
-43.752
DrGrt
0.00
0.15
0.52
5.0
238.40
1.06
240.10
30
Cir
0.013
0.50
256.25
Al TO Al
5
4
153.774
-2.128
DrGrt
0.00
0.37
0.78
5.0
240.30
1.04
241.90
30
Cir
0.013
1.50
256.25
Al TO A16
6
5
124.450
-84.960
DrGrt
0.00
0.67
0.88
5.0
242.40
1.04
243.70
24
Cir
0.013
0.50
256.25
Al TO Al
7
6
128.737
-2.901
DrGrt
0.00
0.70
0.88
5.0
244.20
1.09
245.60
18
Cir
0.013
0.50
256.25
Al TO Al
8
7
130.000
-0.044
DrGrt
0.00
0.57
0.87
5.0
245.80
1.08
247.20
18
Cir
0.013
0.50
255.25
A20 TO Al
9
8
126.958
0.022
DrGrt
0.00
0.57
0.83
5.0
247.40
1.06
248.75
18
Cir
0.013
0.50
255.25
A21 TO A22
10
9
126.042
0.000
DrGrt
0.00
0.63
0.82
5.0
249.00
1.11
250.40
15
Cir
0.013
0.50
255.25
A22 TO A21
11
10
125.735
0.000
DrGrt
0.00
0.16
0.43
5.0
250.60
1.11
252.00
15
Cir
0.013
1.00
255.25
A23 TO A22
12
1
159.177
0.053
DrGrt
0.00
0.90
0.80
5.0
235.40
1.01
237.00
36
Cir
0.013
0.50
251.10
A2 TO Al
13
12
90.000
-0.053
DrGrt
0.00
0.59
0.94
5.0
237.50
1.11
238.50
30
Cir
0.013
0.50
251.10
A3 TO A2
14
13
90.000
0.000
DrGrt
0.00
0.50
0.94
5.0
238.70
1.11
239.70
30
Cir
0.013
0.50
251.10
A4 TO A3
15
14
90.000
0.000
DrGrt
0.00
0.67
0.94
5.0
240.20
1.00
241.10
24
Cir
0.013
0.50
251.10
A5 TO A4
16
15
90.000
0.000
DrGrt
0.00
0.61
0.94
5.0
241.30
1.00
242.20
24
Cir
0.013
0.50
251.10
A6 TO A5
17
16
90.000
0.000
DrGrt
0.00
1.24
0.82
5.0
242.40
1.22
243.50
24
Cir
0.013
0.50
251.10
A7 TO A6
18
17
141.177
-0.203
Comb
0.00
0.07
0.85
5.0
244.00
1.06
245.50
18
Cir
0.013
1.07
254.50
A8 TO A7
19
18
67.285
41.565
Comb
0.00
0.15
0.82
5.0
245.70
1.04
246.40
18
Cir
0.013
0.99
254.55
A9 TO A8
20
19
92.063
37.362
Comb
0.00
0.21
0.51
5.0
246.60
1.14
247.65
18
Cir
0.013
0.50
254.55
Al TO A9
21
20
67.502
11.275
Comb
0.00
0.17
0.67
5.0
247.90
1.04
248.60
15
Cir
0.013
0.50
254.60
All TO Al
22
21
81.998
0.000
Comb
0.00
0.20
0.55
5.0
248.80
1.04
249.65
15
Cir
0.013
0.50
254.70
Al2 TO All
23
22
58.502
0.000
Comb
0.00
0.23
0.51
5.0
249.85
1.03
250.45
15
Cir
0.013
1.00
254.70
Al TO Al2
Project File: 2021-06-01 Storm Drainagr.stm
Number of lines: 23
Date: 6/2/2021
Storm Sewers v2021.00

Structure Report
Page 1
Struct
No.
Structure ID
Junction
Type
Rim
Elev
(ft)
Structure
Line Out
Line In
Shape
Length
(ft)
Width
(ft)
Size
(in)
Shape
Invert
(ft)
Size
(in)
Shape
Invert
(ft)
1
MH Al
Manhole
249.50
Cir
4.00
4.00
36
Cir
235.20
30
Cir
235.70
36
Cir
235.40
2
DI A14
DropGrate
256.25
Cir
3.00
3.00
30
Cir
237.60
30
Cir
237.80
3
DI A15
DropGrate
256.25
Cir
3.00
3.00
30
Cir
238.20
30
Cir
238.40
4
DI A16
DropGrate
256.25
Cir
3.00
3.00
30
Cir
240.10
30
Cir
240.30
5
DI A17
DropGrate
256.25
Cir
3.00
3.00
30
Cir
241.90
24
Cir
242.40
6
DI A18
DropGrate
256.25
Cir
3.00
3.00
24
Cir
243.70
18
Cir
244.20
7
DI A19
DropGrate
256.25
Cir
3.00
3.00
18
Cir
245.60
18
Cir
245.80
8
DI A20
DropGrate
255.25
Cir
3.00
3.00
18
Cir
247.20
18
Cir
247.40
9
DI A21
DropGrate
255.25
Cir
3.00
3.00
18
Cir
248.75
15
Cir
249.00
10
DI A22
DropGrate
255.25
Cir
3.00
3.00
15
Cir
250.40
15
Cir
250.60
11
DI A23
DropGrate
255.25
Cir
3.00
3.00
15
Cir
252.00
12
CB A2
DropGrate
251.10
Cir
3.00
3.00
36
Cir
237.00
30
Cir
237.50
13
DI A3
DropGrate
251.10
Cir
3.00
3.00
30
Cir
238.50
30
Cir
238.70
14
DI A4
DropGrate
251.10
Cir
3.00
3.00
30
Cir
239.70
24
Cir
240.20
15
DI A5
DropGrate
251.10
Cir
3.00
3.00
24
Cir
241.10
24
Cir
241.30
16
DI A6
DropGrate
251.10
Cir
3.00
3.00
24
Cir
242.20
24
Cir
242.40
17
DI A7
DropGrate
251.10
Cir
3.00
3.00
24
Cir
243.50
18
Cir
244.00
18
CB A8
Combination
254.50
Cir
3.00
3.00
18
Cir
245.50
18
Cir
245.70
19
CB A9
Combination
254.55
Cir
3.00
3.00
18
Cir
246.40
18
Cir
246.60
20
CB A10
Combination
254.55
Cir
3.00
3.00
18
Cir
247.65
15
Cir
247.90
21
CB A11
Combination
254.60
Cir
3.00
3.00
15
Cir
248.60
15
Cir
248.80
22
CB Al
Combination
254.70
Cir
3.00
3.00
15
Cir
249.65
15
Cir
249.85
Project File: 2021-06-01 Storm Drainagr.stm
Number of Structures: 23
Run Date: 6/2/2021
Storm Sewers v2021.00

Structure Report
Page 2
Struct
No.
Structure ID
Junction
Type
Rim
Elev
(ft)
Structure
Line Out
Line In
Shape
Length
(ft)
Width
(ft)
Size
(in)
Shape
Invert
(ft)
Size
(in)
Shape
Invert
(ft)
23
CB A13
Combination
254.70
Cir
3.00
3.00
15
Cir
250.45
Project File: 2021-06-01 Storm Drainagr.stm
Number of Structures: 23
Run Date: 6/2/2021
Storm Sewers v2021.00

Storm Sewer Summary Report
Page 1
Line
No.
Line ID
Flow
rate
(cfs)
Line
Size
(in)
Line
shape
Line
length
(ft)
Invert
EL Dn
(ft)
Invert
EL Up
(ft)
Line
Slope
(%)
HGL
Down
(ft)
HGL
Up
(ft)
Minor
loss
(ft)
HGL
Junct
(ft)
Dns
Line
No.
Junction
Type
1
Al TO FES A
42.68
36
Cir
62.758
234.50
235.20
1.115
245.75*
246.01 *
0.57
246.57
End
Manhole
2
A14 TO Al
18.31
30
Cir
73.045
235.70
237.60
2.601
246.57*
246.72*
0.24
246.96
1
DropGrate
3
A15 TO A14
17.16
30
Cir
31.984
237.80
238.20
1.251
246.96*
247.01 *
0.21
247.22
2
DropGrate
4
A16 TO A15
17.24
30
Cir
160.012
238.40
240.10
1.062
247.22*
247.51 *
0.10
247.60
3
DropGrate
5
A17 TO A16
17.14
30
Cir
153.774
240.30
241.90
1.040
247.60*
247.87*
0.28
248.15
4
DropGrate
6
A18 TO A17
15.69
24
Cir
124.450
242.40
243.70
1.045
248.15*
248.75*
0.19
248.95
5
DropGrate
7
A19 TO A18
12.44
18
Cir
128.737
244.20
245.60
1.087
248.95*
250.76*
0.39
251.14
6
DropGrate
8
A20 TO A19
9.01
18
Cir
130.000
245.80
247.20
1.077
251.14*
252.10*
0.20
252.30
7
DropGrate
9
A21 TO A22
6.24
18
Cir
126.958
247.40
248.75
1.063
252.30*
252.75*
0.10
252.84
8
DropGrate
10
A22 TO A21
3.52
15
Cir
126.042
249.00
250.40
1.111
252.84*
253.22*
0.06
253.28
9
DropGrate
11
A23 TO A22
0.50
15
Cir
125.735
250.60
252.00
1.113
253.28*
253.29*
0.00
253.29
10
DropGrate
12
A2 TO Al
26.01
36
Cir
159.177
235.40
237.00
1.005
246.57*
246.82*
0.11
246.92
1
DropGrate
13
A3 TO A2
22.14
30
Cir
90.000
237.50
238.50
1.111
246.92*
247.18*
0.16
247.34
12
DropGrate
14
A4 TO A3
19.18
30
Cir
90.000
238.70
239.70
1.111
247.34*
247.54*
0.12
247.66
13
DropGrate
15
A5 TO A4
16.60
24
Cir
90.000
240.20
241.10
1.000
247.66*
248.14*
0.22
248.36
14
DropGrate
16
A6 TO A5
13.07
24
Cir
90.000
241.30
242.20
1.000
248.36*
248.66*
0.13
248.80
15
DropGrate
17
A7 TO A6
9.83
24
Cir
90.000
242.40
243.50
1.222
248.80*
248.97*
0.08
249.04
16
DropGrate
18
A8 TO A7
3.89
18
Cir
141.177
244.00
245.50
1.063
249.04*
249.23*
0.08
249.32
17
Combination
19
A9 TO A8
3.58
18
Cir
67.285
245.70
246.40
1.040
249.32*
249.39*
0.06
249.46
18
Combination
20
A10 TO A9
2.90
18
Cir
92.063
246.60
247.65
1.141
249.46*
249.53*
0.02
249.55
19
Combination
21
All TO A10
2.25
15
Cir
67.502
247.90
248.60
1.037
249.55
249.61
0.03
249.65
20
Combination
22
Al2 TOAll
1.56
15
Cir
81.998
248.80
249.65
1.036
249.65
250.14
n/a
250.14 j
21
Combination
23
A13 TO Al2
0.85
15
Cir
58.502
249.85
250.45
1.026
250.15
250.81
n/a
250.81
22
Combination
Project File: 2021-06-01 Storm Drainagr.stm
Number of lines: 23
Run Date: 6/2/2021
NOTES: Return period = 10 Yrs. ; *Surcharged (HGL above crown). ; j - Line contains hyd. jump.
Storm Sewers v2021.00

Storm Sewer Tabulation
Page 1
Station
Len
(ft)
Drng Area
Rnoff
coeff
(C)
Area x C
Tc
Rain
(I)
(in/hr)
Total
flow
(cfs)
Cap
full
(cfs)
Vel
(ft/s)
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
Line
To
Line
Incr
(ac)
Total
(ac)
Incr
Total
Inlet
(min)
Syst
(min)
Size
(in)
Slope
(%)
Dn
(ft)
Up
(ft)
Dn
(ft)
Up
(ft)
Dn
(ft)
Up
(ft)
1
End
62.758
0.00
9.73
0.00
0.00
8.00
0.0
14.1
5.3
42.68
70.44
6.04
36
1.12
234.50
235.20
245.75
246.01
237.33
249.50
Al TO FES A
2
1
73.045
0.28
4.19
0.81
0.23
3.40
5.0
13.8
5.4
18.31
66.15
3.73
30
2.60
235.70
237.60
246.57
246.72
249.50
256.25
Al TO Al
3
2
31.984
0.09
3.91
0.54
0.05
3.18
5.0
13.7
5.4
17.16
45.86
3.50
30
1.25
237.80
238.20
246.96
247.01
256.25
256.25
Al TO A14
4
3
160.012
0.15
3.82
0.52
0.08
3.13
5.0
13.0
5.5
17.24
42.27
3.51
30
1.06
238.40
240.10
247.22
247.51
256.25
256.25
Al TO A15
5
4
153.774
0.37
3.67
0.78
0.29
3.05
5.0
12.3
5.6
17.14
41.83
3.49
30
1.04
240.30
241.90
247.60
247.87
256.25
256.25
Al TO A16
6
5
124.450
0.67
3.30
0.88
0.59
2.76
5.0
11.9
5.7
15.69
23.12
5.00
24
1.04
242.40
243.70
248.15
248.75
256.25
256.25
Al TO A17
7
6
128.737
0.70
2.63
0.88
0.62
2.17
5.0
11.7
5.7
12.44
10.95
7.04
18
1.09
244.20
245.60
248.95
250.76
256.25
256.25
Al TO A18
8
7
130.000
0.57
1.93
0.87
0.50
1.55
5.0
11.3
5.8
9.01
10.90
5.10
18
1.08
245.80
247.20
251.14
252.10
256.25
255.25
A20 TO A19
9
8
126.958
0.57
1.36
0.83
0.47
1.06
5.0
10.8
5.9
6.24
10.83
3.53
18
1.06
247.40
248.75
252.30
252.75
255.25
255.25
A21 TO A22
10
9
126.042
0.63
0.79
0.82
0.52
0.59
5.0
10.2
6.0
3.52
6.81
2.87
15
1.11
249.00
250.40
252.84
253.22
255.25
255.25
A22 TO A21
11
10
125.735
0.16
0.16
0.43
0.07
0.07
5.0
5.0
7.2
0.50
6.81
0.41
15
1.11
250.60
252.00
253.28
253.29
255.25
255.25
A23 TO A22
12
1
159.177
0.90
5.54
0.80
0.72
4.60
5.0
12.1
5.7
26.01
66.87
3.68
36
1.01
235.40
237.00
246.57
246.82
249.50
251.10
A2 TO Al
13
12
90.000
0.59
4.64
0.94
0.55
3.88
5.0
11.8
5.7
22.14
43.23
4.51
30
1.11
237.50
238.50
246.92
247.18
251.10
251.10
A3 TO A2
14
13
90.000
0.50
4.05
0.94
0.47
3.32
5.0
11.4
5.8
19.18
43.23
3.91
30
1.11
238.70
239.70
247.34
247.54
251.10
251.10
A4 TO A3
15
14
90.000
0.67
3.55
0.94
0.63
2.85
5.0
11.2
5.8
16.60
22.62
5.28
24
1.00
240.20
241.10
247.66
248.14
251.10
251.10
A5 TO A4
16
15
90.000
0.61
2.88
0.94
0.57
2.22
5.0
10.8
5.9
13.07
22.62
4.16
24
1.00
241.30
242.20
248.36
248.66
251.10
251.10
A6 TO A5
17
16
90.000
1.24
2.27
0.82
1.02
1.65
5.0
10.4
6.0
9.83
25.00
3.13
24
1.22
242.40
243.50
248.80
248.97
251.10
251.10
A7 TO A6
18
17
141.177
0.07
1.03
0.85
0.06
0.63
5.0
9.4
6.2
3.89
10.82
2.20
18
1.06
244.00
245.50
249.04
249.23
251.10
254.50
A8 TO A7
19
18
67.285
0.15
0.96
0.82
0.12
0.57
5.0
8.9
6.3
3.58
10.71
2.03
18
1.04
245.70
246.40
249.32
249.39
254.50
254.55
A9 TO A8
20
19
92.063
0.21
0.81
0.51
0.11
0.45
5.0
8.0
6.5
2.90
11.22
1.64
18
1.14
246.60
247.65
249.46
249.53
254.55
254.55
Al TO A9
21
20
67.502
0.17
0.60
0.67
0.11
0.34
5.0
7.4
6.6
2.25
6.58
1.97
15
1.04
247.90
248.60
249.55
249.61
254.55
254.60
All TO A10
22
21
81.998
0.20
0.43
0.55
0.11
0.23
5.0
6.4
6.9
1.56
6.57
2.60
15
1.04
248.80
249.65
249.65
250.14
254.60
254.70
Al TO A11
Project File: 2021-06-01 Storm Drainagr.stm
Number of lines: 23
Run Date: 6/2/2021
NOTES:Intensity = 88.24 / (Inlet time + 15.50) A 0.83; Return period =Yrs. 10 ; c = cir e = ellip b = box
Storm Sewers v2021.00

Storm Sewer Tabulation
Page 2
Station
Len
(ft)
Drng Area
Rnoff
coeff
(C)
Area x C
Tc
Rain
(I)
(in/hr)
Total
flow
(cfs)
Cap
full
(cfs)
Vel
(ft/s)
Pipe
Invert Elev
HGL Elev
Grnd / Rim Elev
Line ID
Line
To
Line
Incr
(ac)
Total
(ac)
Incr
Total
Inlet
(min)
Syst
(min)
Size
(in)
Slope
(%)
Dn
(ft)
Up
(ft)
Dn
(ft)
Up
(ft)
Dn
(ft)
Up
(ft)
23
22
58.502
0.23
0.23
0.51
0.12
0.12
5.0
5.0
7.2
0.85
6.54
3.28
15
1.03
249.85
250.45
250.15
250.81
254.70
254.70
A13 TO Al2
Project File: 2021-06-01 Storm Drainagr.stm
Number of lines: 23
Run Date: 6/2/2021
NOTES:Intensity = 88.24 / (Inlet time + 15.50) A 0.83; Return period =Yrs. 10 ; c = cir e = ellip b = box
Storm Sewers v2021.00

Inlet Report
Page 1
Line
No
Inlet ID
Q =
CIA
(cfs)
Q
carry
(cfs)
Q
capt
(cfs)
Q
Byp
(cfs)
Junc
Type
Curb Inlet
Grate Inlet
Gutter
Inlet
Byp
Line
No
Ht
(in)
L
(ft)
Area
(sqft)
L
(ft)
W
(ft)
So
(ft/ft)
W
(ft)
Sw
(ft/ft)
Sx
(ft/ft)
n
Depth
(ft)
Spread
(ft)
Depth
(ft)
Spread
(ft)
Depr
(in)
1
MH Al
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
2
DI A14
1.64
0.00
1.64
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
Sag
2.00
0.020
0.020
0.000
0.14
16.40
0.14
16.40
0.0
Off
3
DI A15
0.35
0.00
0.35
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
Sag
2.00
0.020
0.020
0.000
0.05
7.15
0.05
7.15
0.0
Off
4
DI A16
0.56
0.00
0.56
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
Sag
2.00
0.020
0.020
0.000
0.07
9.07
0.07
9.07
0.0
Off
5
DI A17
2.09
0.00
2.09
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
Sag
2.00
0.020
0.020
0.000
0.17
18.91
0.17
18.91
0.0
Off
6
DI A18
4.27
0.00
4.27
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
Sag
2.00
0.020
0.020
0.000
0.27
29.23
0.27
29.23
0.0
Off
7
DI A19
4.46
0.00
4.46
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
Sag
2.00
0.020
0.020
0.000
0.28
30.04
0.28
30.04
0.0
Off
8
DI A20
3.59
0.00
3.59
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
Sag
2.00
0.020
0.020
0.000
0.24
26.26
0.24
26.26
0.0
Off
9
DI A21
3.42
0.00
3.42
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
Sag
2.00
0.020
0.020
0.000
0.24
25.51
0.24
25.51
0.0
Off
10
DI A22
3.74
0.00
3.74
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
Sag
2.00
0.020
0.020
0.000
0.25
26.93
0.25
26.93
0.0
Off
11
DI A23
0.50
0.00
0.50
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
Sag
2.00
0.020
0.020
0.000
0.06
8.50
0.06
8.50
0.0
Off
12
CB A2
5.21
0.00
5.21
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
Sag
2.00
0.020
0.020
0.000
0.31
33.11
0.31
33.11
0.0
Off
13
DI A3
4.01
0.00
4.01
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
ISag
2.00
0.020
0.020
0.000
0.26
28.14
0.26
28.14
0.0
Off
14
DI A4
3.40
0.00
3.40
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
Sag
2.00
0.020
0.020
0.000
0.23
25.41
0.23
25.41
0.0
Off
15
DI A5
4.56
0.00
4.56
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
ag
2.00
0.020
0.020
0.000
0.28
30.46
0.28
30.46
0.0
Off
16
DI A6
4.15
0.00
4.15
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
ag
2.00
0.020
0.020
0.000
0.27
28.73
0.27
28.73
0.0
Off
17
DI A7
7.36
0.01
7.37
0.00
DrGrt
0.0
0.00
6.00
3.00
2.00
Sag
2.00
0.020
0.020
0.000
0.39
41.20
0.39
41.20
0.0
Off
18
CB A8
0.43
0.00
0.42
0.01
Comb
4.0
3.00
0.00
3.00
2.00
0.030
2.00
0.042
0.020
0.013
0.10
3.00
0.19
0.59
2.0
17
19
CB A9
0.89
0.00
0.89
0.00
Comb
4.0
3.00
6.00
3.00
2.00
Sag
2.00
0.042
0.020
0.000
0.08
2.00
0.25
2.00
2.0
Off
20
CB Al
0.78
0.00
0.78
0.00
Comb
4.0
3.00
6.00
3.00
2.00
Sag
2.00
0.042
0.020
0.000
0.08
2.00
0.25
2.00
2.0
Off
21
CB All
0.82
0.00
0.82
0.00
Comb
4.0
3.00
6.00
3.00
2.00
Sag
2.00
0.042
0.020
0.000
0.08
2.00
0.25
2.00
2.0
Off
22
CB Al2
0.80
0.00
0.80
0.00
Comb
4.0
3.00
6.00
3.00
2.00
Sag
2.00
0.042
0.020
0.000
0.08
2.00
0.25
2.00
2.0
Off
23
CB Al
0.85
0.00
0.85
0.00
Comb
4.0
3.00
6.00
3.00
2.00
Sag
2.00
0.042
0.020
0.000
0.08
2.00
0.25
2.00
2.0
Off
Project File: 2021-06-01 Storm Drainagr.stm
Number of lines: 23
Run Date: 6/2/2021
NOTES: Inlet N-Values = 0.016; Intensity = 88.24 / (Inlet time + 15.50) A 0.83; Return period = 10 Yrs. ; * Indicates Known Q added. All curb inlets are Horiz throat.
Storm Sewers v2021.00

Storm Sewer Profile
Proj. file: 2021-06-01 Storm Drainagr.stm
Elev. (ft)
273.00
264.00
255.00
246.00
237.00
228.00
0E
N
J
7
0E
co
J
0▪ E
05
0▪ E
0E
co 7
E 0 C
rn
J
0▪ E
7
0E
0
Sta 0+00.00 -
Grnd. El. 237.;
Inv. El. 234.50
Sta 0+62.758 -
Rim El. 249.50
Inv. El. 235.20
Inv. El. 235.70
Sta 1+35.803 -
Rim El. 256.25
Inv. El. 237.60
Inv. El. 237.80
Sta 1+67.787 -
Rim El. 256.25
Inv. El. 238.20
Inv. El. 238.40
Sta 3+27.799 -
Rim El. 256.25
Inv. El. 240.10
Inv. El. 240.30
Sta 4+81.573 -
Rim El. 256.25
Inv. El. 241.90
Inv. El. 242.40
Sta 6+06.023 -
Rim El. 256.25
Inv. El. 243.70
Inv. El. 244.20
Sta 7+34.76 - I
Rim El. 256.25
Inv. El. 245.60
Inv. El. 245.80
Sta 8+64.76 - I
Rim El. 255.25
Inv. El. 247.20
Inv. El. 247.40
Sta 9+91.718 -
Rim El. 255.25
Inv. El. 248.75
Inv. El. 249.00
Sta 11+17.76 -
Rim El. 255.25
Inv. El. 250.40
Inv. El. 250.60
Sta 12+43.495
Rim El. 255.25
Inv. El. 252.00
/r7
Z7
/
/
/
/
I
I
I
I
II
/
"
12G.042Lf
- 17
@ 1.11
120.958Lf
- 18
@ 1.66%
— 13U.t)00Lf
- 18" £LD 1.08%
—
128.737Lf -
18" [ED 1.09
/o
z
I
— I G4.49ULT
- L4
a 1.0470
. a
— 160.012Lt
- 3U'
a 1.Ub%
f
— 31.984Lf
- 30'
@ 1.25%
— 73 0451
f - 30" @ 2 60%
— R77SRIf-4R"@112%
—
17R735If-'
0
100
HGL
200
EGL
300
400
500
600
700
Reach (ft)
800
900
1000
1100
1200
273.00
264.00
255.00
246.00
237.00
5"@ 1.11%
228.00
1300
Storm Sewers

Storm Sewer Profile
Proj. file: 2021-06-01 Storm Drainagr.stm
Elev. (ft)
270.00
262.00
254.00
c 5
0 c J O c
O O O O O O
OON•� 7Otn
0 N N N N Lo N N
•
+0 W W W ; W W W
c E>> E»
(.0cc c c c c
Sta 2+49.177 - Ln: 13
c 5 C 5 C 5 c 7 C 5 c 5 c 5 C 7 J 5 J 7
0 c J O c J 0 c J O c J O. c J O c J O c J O c J O c O c 0
000 ' 00O ' 000 ' 000 ' 000 ' 000 ' l{j 00 ' "" U) O ' 000 ' 0v.,u M Ou,
7th M7hN
Mv A- co r7N . 7�O �L7h ��O �00 hd.
7V ��MTr�0u"7� , ai ��inMLo �Vd0t)�V mrt "")
NNN N•NN N NNN• W NNN 0•0 NNN NNN N h NNN NNN• ^ NNN + NNN N
WWW M WWW WWW LL� WWW cp WWW h W Ww WWW O WWW O WWW WWW WW
•
E55 m E» c E» c E55 E» E>> m E55 co E» co E> m E55 E5
E c c cecc co ixcc ,xcc t
co ix cc rxcc co etcc ,xcc ctcc o E
246.00 —
238.00
— n 0001 f - 94'
111
0 1 22°/
18" c 1 06%
1.t4%
— 81
•
ri8 S02Lf
270.00
2.00
254.00
246.00
15" @ 1.03%
f - 15" © 1 04%
90.000Lf - 24" (p7 1.00%
— 90.000Lf - 24' 1.0u%
—98-890Lf 30" @ 1.11 %
230.00
0
— 1 r,9 177Lf - 36" 1 Q1 %
— 67
b02Lf - 15" @ 1 04%
100 200 300 400 500 600 700 800 900 1000 1100 1200
HGL EGL
Reach (ft)
238.00
230.00
Storm Sewers

APPENDIX D
WET POND CALCULATIONS
PROVIDING CIVIL /SITE & INFRASTRUCTURE CONSULTING SERVICES SINCE 1998

Project
Project No.
Wet Pond ID:
WET POND CALCULATIONS
CCEP - Lot #6
200-107
Wet Pond
Drainage Area Information Area (st)
Impervious Area
Open Space and Wooded Areas
358,737.00 sq. ft.
120,973.00 sq. ft.
Area (ac)
8.24 ac.
2.78 ac.
Total Drainage Area to Wet Pond 11.01 ac.
Impervious Area Percentage (In)
Water Quality Volume Calculations
0.75
Calcs by
Date
JCH, PE
6/1/2021
V = 3,630 (Ro)*(Rv)*(A) = 28904.07 cu ft
Where:
Wet Pond Area Calculations
RD = 1" or 1.5"
Rv = 0.05 + 0.9(1A)=
1.0 in
0.723
Average Depth of Main Pool
Dgvu = Vee / Aee
DAVG =
Surface Area / Drainage Area Ratio
Impervious % =
SA / DA Ratio =
SA Required =
Davo = Average Depth Vee = Volume of Permanent Pool Arr, = Area of Permanent Pool
4.06 Dgvo Used = 4.0
74.78
2.24
0.2470
Surface Area Required 10760 sq. ft.
Surface Area Provided
Wetland Calculations
18040 sq. ft.
<- (fnterpalated from Table 2 - NCDENR BMP Manual)
(In Acres)
Notes
Contour
(feet)
Stage
(feet)
Contour area
(acres)
Contour area
(sf)
Average contour
area
(sl)
Incr. contour
volume
(ef)
Accum. contour
volume
(cf)
Bottom of Pond
235.00
0.0
0.111
4,823
---
---
--
236.00
1.0
0.136
5,903
5,363
5,363
5,363
237.00
2.0
0.162
7,045
6,474
6,474
11,837
238.00
3.0
0.189
8,249
7,647
7,647
19,484
239.00
4.0
0.218
9,515
8,882
8,882
28,366
240.00
5.0
0.249
10,841
10,178
10,178
38,544
Bottom Shelf
241.00
6.0
0.281
12,229
11,535
11,535
50,079
Permanent Pool
241.50
6.5
0.320
13,939
13,084
6,542
56,621
Top Shelf
242.00
7.0
0.349
15,187
14,563
7,282
63,903
243.00
8.0
0.378
16,462
15,825
15,825
79,727
Temporary Pool
243.25
8.3
0.385
16,786
16,624
4,156
83,883
244.00
9.0
0.540
23,542
22,831
17,123
101,006
245.00
10.0
0.585
25,489
24,516
24,516
125,521
246.00
11.0
0.631
27,492
26,491
26,491
152,012
247.00
12.0
0.631
27,493
27,493
27,493
179,504
Top of Dam
248.00
13.0
0.727
31,667
29,580
29,580
209,084
Forebay Calculations (FB #1) - Entry Forebay
Total Forbay Volume= 15% - 20% of Main Pool Volume
15%
10.20 ac.
92.6%
56,621
7,866
Drainage to Forebay =
% of Total Drainage =
Main Pool Volume=
Forebay Volume Required =
Forebay Volume Provided =
20%
10.20 ac.
92.6%
56,621
10,489
10,932
19.31%
Notes
Contour
(feet)
Stage
(feet)
Contour area
(acres)
Contour area
(st)
Average contour
area
(st)
Incr. contour
volume
(ct)
Accum. contour
volume
(ct)
Bottom of Pond
235.00
0.0
0.008
346
---
---
---
236.00
1.0
0.014
622
484
484
484
237.00
2.0
0.022
975
799
799
1,283
238.00
3.0
0.032
1,404
1,190
1,190
2,472
239.00
4.0
0.044
1,906
1,655
1,655
4,127
240.00
5.0
0.057
2,481
2,194
2,194
6,321
Bottom Shelf
241.00
6.0
0.072
3,127
2,804
2,804
9,125
Permanent Pool
241.50
6.5
0.094
4,101
3,614
1,807
10,932
Top Shelf
242.00
7.0
0.106
4,630
4,366
2,183
13,114
243.00
8.0
0.119
5,189
4,910
4,910
18,024
Temporary Pool
243.25
8.3
0.122
5,333
5,261
1,315
19,339
Total Volume Calculations
Wet Pond
Forebay
Total Volume
27,262 en ft
8,408 cu ft
35,670 cu ft OK

1 2 3
lag
Legend
Hvd. Origin Description
1 SCS Runoff Pre -Developed A
2 SCS Runoff Post -Developed to Wet Pond
3 SCS Runoff Post -Developed Bypass A
4 Reservoir Wet Pond Outflow
5 Combine Post -Developed A Total
5�
Hydraflow Hydrographs Model
Project: 2021-06-01 Wet Pond Design.gpw
Wednesday, Jun 2 2021, 11:50 AM

Table of Contents
2021-06-01 Wet Pond Design.gpw
Hydraflow Hydrographs by Intelisolve Wednesday, Jun 2 2021, 11:49 AM
Hydrograph Return Period Recap 1
1 - Year
Summary Report 2
Hydrograph Reports 3
Hydrograph No. 1, SCS Runoff, Pre -Developed A 3
TR-55 Tc Worksheet 4
Hydrograph No. 2, SCS Runoff, Post -Developed to Wet Pond 5
Hydrograph No. 3, SCS Runoff, Post -Developed Bypass A 6
TR-55 Tc Worksheet 7
Hydrograph No. 4, Reservoir, Wet Pond Outflow 8
Pond Report 9
Hydrograph No. 5, Combine, Post -Developed A Total 10
10 - Year
Summary Report 11
Hydrograph Reports 12
Hydrograph No. 1, SCS Runoff, Pre -Developed A 12
TR-55 Tc Worksheet 13
Hydrograph No. 2, SCS Runoff, Post -Developed to Wet Pond 14
Hydrograph No. 3, SCS Runoff, Post -Developed Bypass A 15
TR-55 Tc Worksheet 16
Hydrograph No. 4, Reservoir, Wet Pond Outflow 17
Pond Report 18
Hydrograph No. 5, Combine, Post -Developed A Total 19
100 - Year
Summary Report 20
Hydrograph Reports 21
Hydrograph No. 1, SCS Runoff, Pre -Developed A 21
TR-55 Tc Worksheet 22
Hydrograph No. 2, SCS Runoff, Post -Developed to Wet Pond 23
Hydrograph No. 3, SCS Runoff, Post -Developed Bypass A 24
TR-55 Tc Worksheet 25
Hydrograph No. 4, Reservoir, Wet Pond Outflow 26
Pond Report 27
Hydrograph No. 5, Combine, Post -Developed A Total 28

Hydrograph Return Period Recap
Hyd.
No.
Hydrograph
type
(origin)
1
2
3
4
5
Inflow
Hyd(s)
1-Yr
2-Yr
3-Yr
SCS Runoff
SCS Runoff
SCS Runoff
Reservoir
Combine
2
3, 4
5.126
37.12
4.694
0.615
5.123
Peak Outflow (cfs)
5-Yr
10-Yr
25-Yr
50-Yr
100-Yr
34.54
73.05
28.56
6.081
32.35
80.71
113.23
64.85
55.25
110.24
Hydrograph
description
Pre -Developed A
Post -Developed to Wet Pond
Post -Developed Bypass A
Wet Pond Outflow
Post -Developed A Total
Proj.
file: 2021-
06-01 W
et Pon
d Desig
n.gpw
We
dnesd
y, Jun 2 2021, 11:49 AM
Hydraflow Hydrographs by Intelisolve

Hydrograph Summary Report
Hyd.
No.
Hydrograph
type
(origin)
1
2
3
4
5
SCS Runoff
SCS Runoff
SCS Runoff
Reservoir
Combine
Peak
flow
(cfs)
5.126
37.12
4.694
0.615
5.123
Time
interval
(min)
2
2
2
2
2
Time to
peak
(min)
734
716
732
1000
732
Volume
(cuft)
Inflow
hyd(s)
35,834
77,325
27,816
72,012
99,828
3, 4
2
Maximum
elevation
(ft)
244.13
Maximum
storage
(cuft)
55,915
Hydrograph
description
Pre -Developed A
Post -Developed to Wet Pond
Post -Developed Bypass A
Wet Pond Outflow
Post -Developed A Total
202
1-06-01 We
t Pond Design.gpw
Return Period: 1 Year
Wednesday, Jun 2 2021, 11:49 AM
Hydraflow Hydrographs by Intelisolve

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 1
Pre -Developed A
Hydrograph type
Storm frequency
Drainage area
Basin Slope
Tc method
Total precip.
Storm duration
= SCS Runoff
= 1 yrs
= 27.320 ac
= 0.0 %
= TR55
= 2.99 in
= 24 hrs
Wednesday, Jun 2 2021, 11:49 AM
Peak discharge
Time interval
Curve number
Hydraulic length
Time of conc. (Tc)
Distribution
Shape factor
= 5.126 cfs
= 2 min
= 61
= 0 ft
= 29.60 min
= Type II
= 484
Q (cfs)
6.00
5.00
4.00
3.00
2.00
1.00
0.00
Hydrograph Volume = 35,834 cuft
Pre -Developed A
Hyd. No. 1 -- 1 Yr
0 2
Hyd No. 1
5 7
9 12 14 16 19 21
23
Q (cfs)
6.00
5.00
4.00
3.00
2.00
1.00
0.00
26
Time (hrs)

TR55 Tc Worksheet
Hyd. No. 1
Pre -Developed A
Description
Sheet Flow
Manning's n-value
Flow length (ft)
Two-year 24-hr precip. (in)
Land slope (%)
Travel Time (min)
Hydraflow Hydrographs by Intelisolve
A B C Totals
= 0.400 0.011 0.011
= 100.0 0.0 0.0
= 3.61 0.00 0.00
= 4.50 0.00 0.00
= 14.62 + 0.00 + 0.00 = 14.62
Shallow Concentrated Flow
Flow length (ft) = 1258.00 745.00 0.00
Watercourse slope (%) = 5.10 1.60 0.00
Surface description = Unpaved Unpaved Paved
Average velocity (ft/s) = 3.64 2.04 0.00
Travel Time (min) = 5.75 + 6.08 + 0.00 = 11.84
Channel Flow
X sectional flow area (sqft)
Wetted perimeter (ft)
Channel slope (%)
Manning's n-value
Velocity (ft/s)
Flow length (ft)
= 3.50
= 4.70
= 1.00
= 0.025
= 4.89
= 84.0
3.00 0.00
8.00 0.00
2.00 0.00
0.050 0.015
2.18 0.00
373.0 0.0
Travel Time (min) = 0.29 + 2.85 + 0.00 = 3.13
Total Travel Time, Tc 29.60 min

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve Wednesday, Jun 2 2021, 11:49 AM
Hyd. No. 2
Post -Developed to Wet Pond
Hydrograph type
Storm frequency
Drainage area
Basin Slope
Tc method
Total precip.
Storm duration
= SCS Runoff
= 1 yrs
= 11.020 ac
= 0.0 %
= USER
= 2.99 in
= 24 hrs
Peak discharge = 37.12 cfs
Time interval = 2 min
Curve number = 91
Hydraulic length = 0 ft
Time of conc. (Tc) = 5.00 min
Distribution = Type II
Shape factor = 484
Q (cfs)
40.00
30.00
20.00
10.00
0.00
Hydrograph Volume = 77,325 cuft
Post -Developed to Wet Pond
Hyd. No. 2 -- 1 Yr
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
Hyd No. 2
Q (cfs)
40.00
30.00
20.00
10.00
0.00
22.0
Time (hrs)

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve Wednesday, Jun 2 2021, 11:49 AM
Hyd. No. 3
Post -Developed Bypass A
Hydrograph type = SCS Runoff Peak discharge = 4.694 cfs
Storm frequency = 1 yrs Time interval = 2 min
Drainage area = 19.750 ac Curve number = 62
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = TR55 Time of conc. (Tc) = 23.60 min
Total precip. = 2.99 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
Hydrograph Volume = 27,816 cuft
Post -Developed Bypass A
0 (cfs) Hyd. No. 3 -- 1 Yr Q (cfs)
5.00
4.00
3.00
2.00
1.00
0.00 —
0
2
— Hyd No. 3
5
7
9
12
14
16
19
21
23
5.00
4.00
3.00
2.00
1.00
0.00
26
Time (hrs)

TR55 Tc Worksheet
Hyd. No. 3
Post -Developed Bypass A
Description
Sheet Flow
Manning's n-value
Flow length (ft)
Two-year 24-hr precip. (in)
Land slope (%)
Travel Time (min)
Hydraflow Hydrographs by Intelisolve
A B C Totals
= 0.400 0.011 0.011
= 100.0 0.0 0.0
= 3.61 0.00 0.00
= 4.50 0.00 0.00
= 14.62 + 0.00 + 0.00 = 14.62
Shallow Concentrated Flow
Flow length (ft) = 1258.00 0.00 0.00
Watercourse slope (%) = 5.10 0.00 0.00
Surface description = Unpaved Paved Paved
Average velocity (ft/s) = 3.64 0.00 0.00
Travel Time (min) = 5.75 + 0.00 + 0.00 = 5.75
Channel Flow
X sectional flow area (sqft)
Wetted perimeter (ft)
Channel slope (%)
Manning's n-value
Velocity (ft/s)
Flow length (ft)
= 3.50
= 4.70
= 1.00
= 0.025
= 4.89
= 84.0
11.25
12.00
1.70
0.030
6.20
1100.0
0.00
0.00
0.00
0.015
0.00
0.0
Travel Time (min) = 0.29 + 2.96 + 0.00 = 3.24
Total Travel Time, Tc 23.60 min

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve Wednesday, Jun 2 2021, 11:49 AM
Hyd. No. 4
Wet Pond Outflow
Hydrograph type
Storm frequency
Inflow hyd. No.
Reservoir name
= Reservoir
= 1 yrs
= 2
= Wet Pond
Peak discharge
Time interval
Max. Elevation
Max. Storage
= 0.615 cfs
= 2 min
= 244.13 ft
= 55,915 cuft
Storage Indication method used.
Q (cfs)
40.00
30.00
20.00
10.00
Hydrograph Volume = 72,012 cuft
Wet Pond Outflow
Hyd. No. 4 -- 1 Yr
0.00 -
0
10
19
29
39
Hyd No. 4 Hyd No. 2
48
58
68
77
87
Q (cfs)
40.00
30.00
20.00
10.00
- 0.00
97
Time (hrs)

Pond Report
Hydraflow Hydrographs by Intelisolve
Pond No. 1 - Wet Pond
Pond Data
Pond storage is based on known contour areas. Average end area method used.
Stage / Storage Table
Stage (ft) Elevation (ft)
0.00
0.50
1.50
2.50
3.50
4.50
5.50
6.50
241.50
242.00
243.00
244.00
245.00
246.00
247.00
248.00
Contour area (sqft) Incr. Storage (cuft) Total storage (cuft)
18,040
19,817
21,651
23,542
25,489
27,492
29,553
31,667
0
9,464
20,734
22,597
24,516
26,491
28,523
30,610
0
9,464
30,198
52,795
77,310
103,801
132,323
162,933
Culvert / Orifice Structures
[A] [B] [C] [D]
Rise (in) = 24.00 2.50 4.00 0.00
Span (in) = 24.00 2.50 4.00 0.00
No. Barrels = 1 1 1 0
Invert El. (ft) = 238.00 241.50 243.25 0.00
Length (ft) = 76.00 0.50 0.50 0.00
Slope (%) = 1.32 0.00 0.00 0.00
N-Value = .013 .013 .013 .000
Orif. Coeff. = 0.60 0.60 0.60 0.00
Multi -Stage = n/a Yes Yes No
Weir Structures
Wednesday, Jun 2 2021, 11:49 AM
[A] [B] [C] [D]
Crest Len (ft) = 12.00 20.00 0.00 0.00
Crest El. (ft) = 245.50 246.50 0.00 0.00
Weir Coeff. = 3.33 3.33 3.33 0.00
Weir Type = Riser Rect --- ---
Multi-Stage = Yes No No No
Exfiltration = 0.000 in/hr (Contour) Tailwater Elev. = 0.00 ft
Stage (ft)
7.00
Note: Culvert/Orifice outflows have been analyzed under inlet and outlet control. Weir riser checked for orifice conditions.
Stage / Discharge
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0.00
20 00 40 00
60 00
80 00
100.00 120.00
140.00 160.00
Stage (ft)
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
180.00
Discharge (cfs)
Total Q

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve Wednesday, Jun 2 2021, 11:49 AM
Hyd. No. 5
Post -Developed A Total
Hydrograph type
Storm frequency
Inflow hyds.
= Combine
= 1 yrs
= 3, 4
Peak discharge
Time interval
= 5.123 cfs
= 2 min
Q (cfs)
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0
Hydrograph Volume = 99,828 cuft
Post -Developed A Total
Hyd. No. 5 -- 1 Yr
10
Hyd No. 5
19
29
39
48
58
Hyd No. 3 Hyd No. 4
68
77
87
Q (cfs)
6.00
5.00
4.00
3.00
2.00
1.00
0.00
97
Time (hrs)

Hydrograph Summary Report
11
Hyd.
No.
Hydrograph
type
(origin)
1
2
3
4
5
SCS Runoff
SCS Runoff
SCS Runoff
Reservoir
Combine
Peak
flow
(cfs)
34.54
73.05
28.56
6.081
32.35
Time
interval
(min)
2
2
2
2
2
Time to
peak
(min)
732
716
730
746
730
Volume
(cuft)
Inflow
hyd(s)
151,517
158,817
113,010
149,423
262,433
3, 4
2
Maximum
elevation
(ft)
245.75
Maximum
storage
(cuft)
97,207
Hydrograph
description
Pre -Developed A
Post -Developed to Wet Pond
Post -Developed Bypass A
Wet Pond Outflow
Post -Developed A Total
202
1-06-01 We
t Pond Design.gpw
Return Period: 10 Year
Wednesday, Jun 2 2021, 11:49 AM
Hydraflow Hydrographs by Intelisolve

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 1
Pre -Developed A
Hydrograph type
Storm frequency
Drainage area
Basin Slope
Tc method
Total precip.
Storm duration
= SCS Runoff
= 10 yrs
= 27.320 ac
= 0.0 %
= TR55
= 5.26 in
= 24 hrs
Wednesday, Jun 2 2021, 11:49 AM
Peak discharge
Time interval
Curve number
Hydraulic length
Time of conc. (Tc)
Distribution
Shape factor
= 34.54 cfs
= 2 min
= 61
= 0 ft
= 29.60 min
= Type II
= 484
Q (cfs)
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00
Hydrograph Volume = 151,517 cuft
Pre -Developed A
Hyd. No. 1 -- 10 Yr
i
J
0
2
Hyd No. 1
5
7
9
12
14
16
19
21
23
Q (cfs)
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00
26
Time (hrs)

TR55 Tc Worksheet
Hyd. No. 1
Pre -Developed A
Description
Sheet Flow
Manning's n-value
Flow length (ft)
Two-year 24-hr precip. (in)
Land slope (%)
Travel Time (min)
Hydraflow Hydrographs by Intelisolve
A B C Totals
= 0.400 0.011 0.011
= 100.0 0.0 0.0
= 3.61 0.00 0.00
= 4.50 0.00 0.00
= 14.62 + 0.00 + 0.00 = 14.62
Shallow Concentrated Flow
Flow length (ft) = 1258.00 745.00 0.00
Watercourse slope (%) = 5.10 1.60 0.00
Surface description = Unpaved Unpaved Paved
Average velocity (ft/s) = 3.64 2.04 0.00
Travel Time (min) = 5.75 + 6.08 + 0.00 = 11.84
Channel Flow
X sectional flow area (sqft)
Wetted perimeter (ft)
Channel slope (%)
Manning's n-value
Velocity (ft/s)
Flow length (ft)
= 3.50
= 4.70
= 1.00
= 0.025
= 4.89
= 84.0
3.00 0.00
8.00 0.00
2.00 0.00
0.050 0.015
2.18 0.00
373.0 0.0
Travel Time (min) = 0.29 + 2.85 + 0.00 = 3.13
Total Travel Time, Tc 29.60 min

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 2
Post -Developed to Wet Pond
Hydrograph type
Storm frequency
Drainage area
Basin Slope
Tc method
Total precip.
Storm duration
= SCS Runoff
= 10 yrs
= 11.020 ac
= 0.0 %
= USER
= 5.26 in
= 24 hrs
Wednesday, Jun 2 2021, 11:49 AM
Peak discharge
Time interval
Curve number
Hydraulic length
Time of conc. (Tc)
Distribution
Shape factor
= 73.05 cfs
= 2 min
= 91
= 0 ft
= 5.00 min
= Type II
= 484
Q (cfs)
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00 -
Hydrograph Volume = 158,817 cuft
Post -Developed to Wet Pond
Hyd. No. 2 -- 10 Yr
L
0.0
2.0
Hyd No. 2
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
Q (cfs)
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
20.0
Time (hrs)

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 3
Post -Developed Bypass A
Hydrograph type
Storm frequency
Drainage area
Basin Slope
Tc method
Total precip.
Storm duration
= SCS Runoff
= 10 yrs
= 19.750 ac
= 0.0 %
= TR55
= 5.26 in
= 24 hrs
Wednesday, Jun 2 2021, 11:49 AM
Peak discharge
Time interval
Curve number
Hydraulic length
Time of conc. (Tc)
Distribution
Shape factor
= 28.56 cfs
= 2 min
= 62
= 0 ft
= 23.60 min
= Type II
= 484
Q (cfs)
30.00
25.00
20.00
15.00
10.00
5.00
0.00
Hydrograph Volume = 113,010 cuft
Post -Developed Bypass A
Hyd. No. 3 -- 10 Yr
I
J
Q (cfs)
30.00
25.00
20.00
15.00
10.00
5.00
0.00
26
Time (hrs)
0 2
Hyd No. 3
5 7
9 12 14 16 19 21
23

TR55 Tc Worksheet
Hyd. No. 3
Post -Developed Bypass A
Description
Sheet Flow
Manning's n-value
Flow length (ft)
Two-year 24-hr precip. (in)
Land slope (%)
Travel Time (min)
Hydraflow Hydrographs by Intelisolve
A B C Totals
= 0.400 0.011 0.011
= 100.0 0.0 0.0
= 3.61 0.00 0.00
= 4.50 0.00 0.00
= 14.62 + 0.00 + 0.00 = 14.62
Shallow Concentrated Flow
Flow length (ft) = 1258.00 0.00 0.00
Watercourse slope (%) = 5.10 0.00 0.00
Surface description = Unpaved Paved Paved
Average velocity (ft/s) = 3.64 0.00 0.00
Travel Time (min) = 5.75 + 0.00 + 0.00 = 5.75
Channel Flow
X sectional flow area (sqft)
Wetted perimeter (ft)
Channel slope (%)
Manning's n-value
Velocity (ft/s)
Flow length (ft)
= 3.50
= 4.70
= 1.00
= 0.025
= 4.89
= 84.0
11.25
12.00
1.70
0.030
6.20
1100.0
0.00
0.00
0.00
0.015
0.00
0.0
Travel Time (min) = 0.29 + 2.96 + 0.00 = 3.24
Total Travel Time, Tc 23.60 min

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve Wednesday, Jun 2 2021, 11:49 AM
Hyd. No. 4
Wet Pond Outflow
Hydrograph type
Storm frequency
Inflow hyd. No.
Reservoir name
= Reservoir
= 10 yrs
= 2
= Wet Pond
Peak discharge = 6.081 cfs
Time interval = 2 min
Max. Elevation = 245.75 ft
Max. Storage = 97,207 cuft
Storage Indication method used. Hydrograph Volume = 149,423 cuft
Q (cfs)
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
Wet Pond Outflow
Hyd. No. 4 -- 10 Yr
Q (cfs)
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
L
0.00 — 0.00
0 10 19 29 39 48 58 68 77 87 97
Time (hrs)
Hyd No. 4 Hyd No. 2

Pond Report
Hydraflow Hydrographs by Intelisolve
Pond No. 1 - Wet Pond
Pond Data
Pond storage is based on known contour areas. Average end area method used.
Stage / Storage Table
Stage (ft) Elevation (ft)
0.00
0.50
1.50
2.50
3.50
4.50
5.50
6.50
241.50
242.00
243.00
244.00
245.00
246.00
247.00
248.00
Contour area (sqft) Incr. Storage (cuft) Total storage (cuft)
18,040
19,817
21,651
23,542
25,489
27,492
29,553
31,667
0
9,464
20,734
22,597
24,516
26,491
28,523
30,610
0
9,464
30,198
52,795
77,310
103,801
132,323
162,933
Culvert / Orifice Structures
[A] [B] [C] [D]
Rise (in) = 24.00 2.50 4.00 0.00
Span (in) = 24.00 2.50 4.00 0.00
No. Barrels = 1 1 1 0
Invert El. (ft) = 238.00 241.50 243.25 0.00
Length (ft) = 76.00 0.50 0.50 0.00
Slope (%) = 1.32 0.00 0.00 0.00
N-Value = .013 .013 .013 .000
Orif. Coeff. = 0.60 0.60 0.60 0.00
Multi -Stage = n/a Yes Yes No
Weir Structures
Wednesday, Jun 2 2021, 11:49 AM
[A] [B] [C] [D]
Crest Len (ft) = 12.00 20.00 0.00 0.00
Crest El. (ft) = 245.50 246.50 0.00 0.00
Weir Coeff. = 3.33 3.33 3.33 0.00
Weir Type = Riser Rect --- ---
Multi-Stage = Yes No No No
Exfiltration = 0.000 in/hr (Contour) Tailwater Elev. = 0.00 ft
Stage (ft)
7.00
Note: Culvert/Orifice outflows have been analyzed under inlet and outlet control. Weir riser checked for orifice conditions.
Stage / Discharge
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0.00
20 00 40 00
60 00
80 00
100.00 120.00
140.00 160.00
Stage (ft)
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
180.00
Discharge (cfs)
Total Q

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve Wednesday, Jun 2 2021, 11:49 AM
Hyd. No. 5
Post -Developed A Total
Hydrograph type
Storm frequency
Inflow hyds.
= Combine
= 10 yrs
= 3, 4
Peak discharge
Time interval
= 32.35 cfs
= 2 min
Q (cfs)
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00
0
Hydrograph Volume = 262,433 cuft
Post -Developed A Total
Hyd. No. 5 -- 10 Yr
1
4
Hyd No. 5
9
13
17
22
26
30
Hyd No. 3 Hyd No. 4
35
39
43
Q (cfs)
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00
48
Time (hrs)

Hydrograph Summary Report
20
Hyd.
No.
Hydrograph
type
(origin)
1
2
3
4
5
SCS Runoff
SCS Runoff
SCS Runoff
Reservoir
Combine
Peak
flow
(cfs)
80.71
113.23
64.85
55.25
110.24
Time
interval
(min)
2
2
2
2
2
Time to
peak
(min)
732
716
728
722
724
Volume
(cuft)
Inflow
hyd(s)
329,564
253,761
242,275
243,847
486,122
3, 4
2
Maximum
elevation
(ft)
246.85
Maximum
storage
(cuft)
127,983
Hydrograph
description
Pre -Developed A
Post -Developed to Wet Pond
Post -Developed Bypass A
Wet Pond Outflow
Post -Developed A Total
202
1-06-01 We
t Pond Design.gpw
Return Period: 100 Year
Wednesday, Jun 2 2021, 11:49 AM
Hydraflow Hydrographs by Intelisolve

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 1
Pre -Developed A
Hydrograph type
Storm frequency
Drainage area
Basin Slope
Tc method
Total precip.
Storm duration
= SCS Runoff
= 100 yrs
= 27.320 ac
= 0.0 %
= TR55
= 7.84 in
= 24 hrs
Wednesday, Jun 2 2021, 11:49 AM
Peak discharge
Time interval
Curve number
Hydraulic length
Time of conc. (Tc)
Distribution
Shape factor
= 80.71 cfs
= 2 min
= 61
= 0 ft
= 29.60 min
= Type II
= 484
Q (cfs)
90.00
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
Hydrograph Volume = 329,564 cuft
Pre -Developed A
Hyd. No. 1 -- 100 Yr
0 2
Hyd No. 1
5
7
9
12
Q (cfs)
90.00
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
14 16 19 21 23 26
Time (hrs)

TR55 Tc Worksheet
Hyd. No. 1
Pre -Developed A
Description
Sheet Flow
Manning's n-value
Flow length (ft)
Two-year 24-hr precip. (in)
Land slope (%)
Travel Time (min)
Hydraflow Hydrographs by Intelisolve
A B C Totals
= 0.400 0.011 0.011
= 100.0 0.0 0.0
= 3.61 0.00 0.00
= 4.50 0.00 0.00
= 14.62 + 0.00 + 0.00 = 14.62
Shallow Concentrated Flow
Flow length (ft) = 1258.00 745.00 0.00
Watercourse slope (%) = 5.10 1.60 0.00
Surface description = Unpaved Unpaved Paved
Average velocity (ft/s) = 3.64 2.04 0.00
Travel Time (min) = 5.75 + 6.08 + 0.00 = 11.84
Channel Flow
X sectional flow area (sqft)
Wetted perimeter (ft)
Channel slope (%)
Manning's n-value
Velocity (ft/s)
Flow length (ft)
= 3.50
= 4.70
= 1.00
= 0.025
= 4.89
= 84.0
3.00 0.00
8.00 0.00
2.00 0.00
0.050 0.015
2.18 0.00
373.0 0.0
Travel Time (min) = 0.29 + 2.85 + 0.00 = 3.13
Total Travel Time, Tc 29.60 min

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 2
Post -Developed
Hydrograph type
Storm frequency
Drainage area
Basin Slope
Tc method
Total precip.
Storm duration
to Wet Pond
= SCS Runoff
= 100 yrs
= 11.020 ac
= 0.0 %
= USER
= 7.84 in
= 24 hrs
Wednesday, Jun 2 2021, 11:49 AM
Peak discharge
Time interval
Curve number
Hydraulic length
Time of conc. (Tc)
Distribution
Shape factor
= 113.23 cfs
= 2 min
= 91
= 0 ft
= 5.00 min
= Type II
= 484
Q (cfs)
120.00
100.00
80.00
60.00
40.00
20.00
Hydrograph Volume = 253,761 cuft
Post -Developed to Wet Pond
Hyd. No. 2 -- 100 Yr
i
0.00 -
0.0
2.0
Hyd No. 2
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
Q (cfs)
120.00
100.00
80.00
60.00
40.00
20.00
0.00
20.0
Time (hrs)

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 3
Post -Developed
Hydrograph type
Storm frequency
Drainage area
Basin Slope
Tc method
Total precip.
Storm duration
Bypass A
= SCS Runoff
= 100 yrs
= 19.750 ac
= 0.0 %
= TR55
= 7.84 in
= 24 hrs
Wednesday, Jun 2 2021, 11:49 AM
Peak discharge
Time interval
Curve number
Hydraulic length
Time of conc. (Tc)
Distribution
Shape factor
= 64.85 cfs
= 2 min
= 62
= 0 ft
= 23.60 min
= Type II
= 484
Q (cfs)
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
Hydrograph Volume = 242,275 cuft
Post -Developed Bypass A
Hyd. No. 3 -- 100 Yr
N_
0
2
Hyd No. 3
5
7
9
12
14
16
19
21
23
Q (cfs)
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
26
Time (hrs)

TR55 Tc Worksheet
Hyd. No. 3
Post -Developed Bypass A
Description
Sheet Flow
Manning's n-value
Flow length (ft)
Two-year 24-hr precip. (in)
Land slope (%)
Travel Time (min)
Hydraflow Hydrographs by Intelisolve
A B C Totals
= 0.400 0.011 0.011
= 100.0 0.0 0.0
= 3.61 0.00 0.00
= 4.50 0.00 0.00
= 14.62 + 0.00 + 0.00 = 14.62
Shallow Concentrated Flow
Flow length (ft) = 1258.00 0.00 0.00
Watercourse slope (%) = 5.10 0.00 0.00
Surface description = Unpaved Paved Paved
Average velocity (ft/s) = 3.64 0.00 0.00
Travel Time (min) = 5.75 + 0.00 + 0.00 = 5.75
Channel Flow
X sectional flow area (sqft)
Wetted perimeter (ft)
Channel slope (%)
Manning's n-value
Velocity (ft/s)
Flow length (ft)
= 3.50
= 4.70
= 1.00
= 0.025
= 4.89
= 84.0
11.25
12.00
1.70
0.030
6.20
1100.0
0.00
0.00
0.00
0.015
0.00
0.0
Travel Time (min) = 0.29 + 2.96 + 0.00 = 3.24
Total Travel Time, Tc 23.60 min

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve Wednesday, Jun 2 2021, 11:49 AM
Hyd. No. 4
Wet Pond Outflow
Hydrograph type
Storm frequency
Inflow hyd. No.
Reservoir name
= Reservoir
= 100 yrs
= 2
= Wet Pond
Peak discharge = 55.25 cfs
Time interval = 2 min
Max. Elevation = 246.85 ft
Max. Storage = 127,983 cuft
Storage Indication method used. Hydrograph Volume = 243,847 cuft
Q (cfs)
120.00
100.00
80.00
60.00
40.00
20.00
Wet Pond Outflow
Hyd. No. 4 -- 100 Yr
Q (cfs)
120.00
100.00
80.00
60.00
40.00
20.00
0.00 0.00
0 4 8 12 16 20 24 28 32 36 40
Time (hrs)
Hyd No. 4 Hyd No. 2

Pond Report
Hydraflow Hydrographs by Intelisolve
Pond No. 1 - Wet Pond
Pond Data
Pond storage is based on known contour areas. Average end area method used.
Stage / Storage Table
Stage (ft) Elevation (ft)
0.00
0.50
1.50
2.50
3.50
4.50
5.50
6.50
241.50
242.00
243.00
244.00
245.00
246.00
247.00
248.00
Contour area (sqft) Incr. Storage (cuft) Total storage (cuft)
18,040
19,817
21,651
23,542
25,489
27,492
29,553
31,667
0
9,464
20,734
22,597
24,516
26,491
28,523
30,610
0
9,464
30,198
52,795
77,310
103,801
132,323
162,933
Culvert / Orifice Structures
[A] [B] [C] [D]
Rise (in) = 24.00 2.50 4.00 0.00
Span (in) = 24.00 2.50 4.00 0.00
No. Barrels = 1 1 1 0
Invert El. (ft) = 238.00 241.50 243.25 0.00
Length (ft) = 76.00 0.50 0.50 0.00
Slope (%) = 1.32 0.00 0.00 0.00
N-Value = .013 .013 .013 .000
Orif. Coeff. = 0.60 0.60 0.60 0.00
Multi -Stage = n/a Yes Yes No
Weir Structures
Wednesday, Jun 2 2021, 11:49 AM
[A] [B] [C] [D]
Crest Len (ft) = 12.00 20.00 0.00 0.00
Crest El. (ft) = 245.50 246.50 0.00 0.00
Weir Coeff. = 3.33 3.33 3.33 0.00
Weir Type = Riser Rect --- ---
Multi-Stage = Yes No No No
Exfiltration = 0.000 in/hr (Contour) Tailwater Elev. = 0.00 ft
Stage (ft)
7.00
Note: Culvert/Orifice outflows have been analyzed under inlet and outlet control. Weir riser checked for orifice conditions.
Stage / Discharge
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0.00
20 00 40 00
60 00
80 00
100.00 120.00
140.00 160.00
Stage (ft)
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
180.00
Discharge (cfs)
Total Q

Hydrograph Plot
Hydraflow Hydrographs by Intelisolve Wednesday, Jun 2 2021, 11:49 AM
Hyd. No. 5
Post -Developed A Total
Hydrograph type
Storm frequency
Inflow hyds.
= Combine
= 100 yrs
= 3, 4
Peak discharge
Time interval
= 110.24 cfs
= 2 min
Q (cfs)
120.00
100.00
80.00
60.00
40.00
20.00
Hydrograph Volume = 486,122 cuft
Post -Developed A Total
Hyd. No. 5 -- 100 Yr
i
0.00
0
Q (cfs)
120.00
100.00
80.00
60.00
40.00
20.00
0.00
26
Time (hrs)
2 5 7 9 12 14 16 19 21 23
Hyd No. 5
Hyd No. 3 Hyd No. 4

Top of pond
S$ Eky. 24..00
1 } (i7 A. pi-
6.00
5.00
4.00
3.00
2.00
1.00
0.00
Wet Pond
Wcirh - Elev. 245.50
29ilariflira.243.25
CuIY6 - Inv. 241.50
CuIYA -
' Side dope fic.timated wengfi from contour
f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f
1 20.00 ft Rfictanguhr weir
3.5' Weir6 - Elev. 24.6.50
�.0LFof c,4.0in @ 1.32%
Section
VTa
(100 yr)
(10 yr)
(1 yr)
Schematic only. Not for construction.
Hydraflow Hydrographs Pond Draw
Project: 2021-06-01 Wet Pond Design.gpw
Wednesday, Jun 2 2021, 11:54 AM

Stage
—7.00
= 6.00
5.00
4.00
= 3.00
— 2.00
1.00
0.00
20.00 ft Rectangular weir
Weir6 - Elev. 246.50
Wet Pond
---------. llmrtiralrr•
WeirA - Elev. 245.50
Top of pond
Elev. 248.00
CuIYG - Iny. 243.25
76.0 LF of 24.0 in @ 1.32%
CuIYA - Inw. 238.00
6 in orifice
ulY6 - Inv. 241.50
Front View
NTS - Looking Downstream
(100 yr)
(10 yr)
(1 Ir)
Schematic only. Not for construction.
Hydraflow Hydrographs Pond Draw
Project: 2021-06-01 Wet Pond Design.gpw
Wednesday, Jun 2 2021, 11:53 AM

Water Quality Drawdown - CCEP - LOT #6
Stage - Storage Function
Contour
Elev.
(ft)
241.50
242.00
243.00
243.25
Contour
Area
(sf)
18,040
19,817
21,651
22,119
Incr.
Storage
(cf)
Accum.
Storage (S)
(cf)
Stage
(Z)
(ft)
9,464 9,464 0.50
20,734 30,198 1.50
5,471 35,670 1.75
Regression Output:
b= 1.057980933 (X Variable Coeff)
Ks- 19,700 (eY"nter'P)
Stage - Storage Equation is of the form: S = (Ks)(Z)b
Check of Ks and b : S = Ks z
Storage Area Stage
9,462 0.5
30,253 1.5
35,612 1.75
in(S) ln(Z)
9.16
10.32
10.48
-0.69
0.41
0.56
Z est
0.00
0.50
1.50
1.75
Primary Spillway
Barrel
n factor =
Dia. of Orifice =
Area of Orifice, (Ao) =
Pipe Length, (L) _
Friction Coeff., (Kp) =
Inv. of Barrel =
Riser
Elev. of Riser Crest =
Circular:
Dia. of Riser =
Weir Length =
Area of Riser =
Rectangular:
Length of Riser =
Width of Riser =
Weir Length =
Area of Riser =
0.013
24.0 inches
3.14 sf
69.0 feet
0.0124
238.0 feet
245.5 feet
inches
feet
sq. ft.
4.0 feet
4.0 feet
16 feet
16 sq.ft.
Water Quality Orifice
Barrel None
Dia. of Barrel =
Inv of Control Barrel
2.5 inches
241.5
Area
0.034088433
Page 1 of 24

Water Quality Drawdown - CCEP - LOT #6
Storm Routing Table - 1" Drawdown
TIME INFLOW STORAGE STAGE
min cfs
0.00 0.00 35,670 1.75
3.00 0.00 35670 1.75
6.00 0.00 35630 1.75
9.00 0.00 35591 1.75
12.00 0.00 35552 1.75
15.00 0.00 35513 1.75
18.00 0.00 35474 1.74
21.00 0.00 35435 1.74
24.00 0.00 35396 1.74
27.00 0.00 35357 1.74
30.00 0.00 35318 1.74
33.00 0.00 35279 1.73
36.00 0.00 35240 1.73
39.00 0.00 35201 1.73
42.00 0.00 35163 1.73
45.00 0.00 35124 1.73
48.00 0.00 35085 1.73
51.00 0.00 35046 1.72
54.00 0.00 35007 1.72
57.00 0.00 34969 1.72
60.00 0.00 34930 1.72
63.00 0.00 34891 1.72
66.00 0.00 34852 1.71
69.00 0.00 34814 1.71
72.00 0.00 34775 1.71
75.00 0.00 34736 1.71
78.00 0.00 34698 1.71
81.00 0.00 34659 1.71
84.00 0.00 34621 1.70
87.00 0.00 34582 1.70
90.00 0.00 34543 1.70
93.00 0.00 34505 1.70
96.00 0.00 34466 1.70
99.00 0.00 34428 1.69
102.00 0.00 34389 1.69
105.00 0.00 34351 1.69
108.00 0.00 34313 1.69
111.00 0.00 34274 1.69
114.00 0.00 34236 1.69
117.00 0.00 34197 1.68
120.00 0.00 34159 1.68
123.00 0.00 34121 1.68
126.00 0.00 34083 1.68
129.00 0.00 34044 1.68
132.00 0.00 34006 1.68
135.00 0.00 33968 1.67
138.00 0.00 33930 1.67
141.00 0.00 33891 1.67
144.00 0.00 33853 1.67
147.00 0.00 33815 1.67
150.00 0.00 33777 1.66
153.00 0.00 33739 1.66
156.00 0.00 33701 1.66
159.00 0.00 33663 1.66
162.00 0.00 33624 1.66
165.00 0.00 33586 1.66
168.00 0.00 33548 1.65
171.00 0.00 33510 1.65
174.00 0.00 33472 1.65
177.00 0.00 33434 1.65
180.00 0.00 33397 1.65
183.00 0.00 33359 1.65
186.00 0.00 33321 1.64
189.00 0.00 33283 1.64
192.00 0.00 33245 1.64
195.00 0.00 33207 1.64
198.00 0.00 33169 1.64
201.00 0.00 33132 1.63
204.00 0.00 33094 1.63
207.00 0.00 33056 1.63
210.00 0.00 33018 1.63
213.00 0.00 32981 1.63
216.00 0.00 32943 1.63
Control TOTAL
BARREL OUTFLOW
cfs fffs
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.22 0.22
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
Page 2 of 24

Water Quality Drawdown - CCEP - LOT #6
219.00 0.00 32905 1.62
222.00 0.00 32868 1.62
225.00 0.00 32830 1.62
228.00 0.00 32792 1.62
231.00 0.00 32755 1.62
234.00 0.00 32717 1.62
237.00 0.00 32680 1.61
240.00 0.00 32642 1.61
243.00 0.00 32605 1.61
246.00 0.00 32567 1.61
249.00 0.00 32530 1.61
252.00 0.00 32492 1.60
255.00 0.00 32455 1.60
258.00 0.00 32417 1.60
261.00 0.00 32380 1.60
264.00 0.00 32343 1.60
267.00 0.00 32305 1.60
270.00 0.00 32268 1.59
273.00 0.00 32231 1.59
276.00 0.00 32193 1.59
279.00 0.00 32156 1.59
282.00 0.00 32119 1.59
285.00 0.00 32082 1.59
288.00 0.00 32044 1.58
291.00 0.00 32007 1.58
294.00 0.00 31970 1.58
297.00 0.00 31933 1.58
300.00 0.00 31896 1.58
303.00 0.00 31859 1.58
306.00 0.00 31822 1.57
309.00 0.00 31785 1.57
312.00 0.00 31748 1.57
315.00 0.00 31711 1.57
318.00 0.00 31674 1.57
321.00 0.00 31637 1.56
324.00 0.00 31600 1.56
327.00 0.00 31563 1.56
330.00 0.00 31526 1.56
333.00 0.00 31489 1.56
336.00 0.00 31452 1.56
339.00 0.00 31415 1.55
342.00 0.00 31378 1.55
345.00 0.00 31342 1.55
348.00 0.00 31305 1.55
351.00 0.00 31268 1.55
354.00 0.00 31231 1.55
357.00 0.00 31194 1.54
360.00 0.00 31158 1.54
363.00 0.00 31121 1.54
366.00 0.00 31084 1.54
369.00 0.00 31048 1.54
372.00 0.00 31011 1.54
375.00 0.00 30974 1.53
378.00 0.00 30938 1.53
381.00 0.00 30901 1.53
384.00 0.00 30865 1.53
387.00 0.00 30828 1.53
390.00 0.00 30792 1.53
393.00 0.00 30755 1.52
396.00 0.00 30719 1.52
399.00 0.00 30682 1.52
402.00 0.00 30646 1.52
405.00 0.00 30610 1.52
408.00 0.00 30573 1.51
411.00 0.00 30537 1.51
414.00 0.00 30500 1.51
417.00 0.00 30464 1.51
420.00 0.00 30428 1.51
423.00 0.00 30392 1.51
426.00 0.00 30355 1.50
429.00 0.00 30319 1.50
432.00 0.00 30283 1.50
435.00 0.00 30247 1.50
438.00 0.00 30210 1.50
441.00 0.00 30174 1.50
444.00 0.00 30138 1.49
447.00 0.00 30102 1.49
450.00 0.00 30066 1.49
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.21 0.21
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
Page 3 of 24

Water Quality Drawdown - CCEP - LOT #6
453.00 0.00 30030 1.49
456.00 0.00 29994 1.49
459.00 0.00 29958 1.49
462.00 0.00 29922 1.48
465.00 0.00 29886 1.48
468.00 0.00 29850 1.48
471.00 0.00 29814 1.48
474.00 0.00 29778 1.48
477.00 0.00 29742 1.48
480.00 0.00 29706 1.47
483.00 0.00 29670 1.47
486.00 0.00 29634 1.47
489.00 0.00 29598 1.47
492.00 0.00 29563 1.47
495.00 0.00 29527 1.47
498.00 0.00 29491 1.46
501.00 0.00 29455 1.46
504.00 0.00 29420 1.46
507.00 0.00 29384 1.46
510.00 0.00 29348 1.46
513.00 0.00 29313 1.46
516.00 0.00 29277 1.45
519.00 0.00 29241 1.45
522.00 0.00 29206 1.45
525.00 0.00 29170 1.45
528.00 0.00 29135 1.45
531.00 0.00 29099 1.45
534.00 0.00 29063 1.44
537.00 0.00 29028 1.44
540.00 0.00 28992 1.44
543.00 0.00 28957 1.44
546.00 0.00 28922 1.44
549.00 0.00 28886 1.44
552.00 0.00 28851 1.43
555.00 0.00 28815 1.43
558.00 0.00 28780 1.43
561.00 0.00 28745 1.43
564.00 0.00 28709 1.43
567.00 0.00 28674 1.43
570.00 0.00 28639 1.42
573.00 0.00 28603 1.42
576.00 0.00 28568 1.42
579.00 0.00 28533 1.42
582.00 0.00 28498 1.42
585.00 0.00 28463 1.42
588.00 0.00 28428 1.41
591.00 0.00 28392 1.41
594.00 0.00 28357 1.41
597.00 0.00 28322 1.41
600.00 0.00 28287 1.41
603.00 0.00 28252 1.41
606.00 0.00 28217 1.40
609.00 0.00 28182 1.40
612.00 0.00 28147 1.40
615.00 0.00 28112 1.40
618.00 0.00 28077 1.40
621.00 0.00 28042 1.40
624.00 0.00 28007 1.39
627.00 0.00 27972 1.39
630.00 0.00 27937 1.39
633.00 0.00 27903 1.39
636.00 0.00 27868 1.39
639.00 0.00 27833 1.39
642.00 0.00 27798 1.38
645.00 0.00 27763 1.38
648.00 0.00 27729 1.38
651.00 0.00 27694 1.38
654.00 0.00 27659 1.38
657.00 0.00 27625 1.38
660.00 0.00 27590 1.37
663.00 0.00 27555 1.37
666.00 0.00 27521 1.37
669.00 0.00 27486 1.37
672.00 0.00 27451 1.37
675.00 0.00 27417 1.37
678.00 0.00 27382 1.37
681.00 0.00 27348 1.36
684.00 0.00 27313 1.36
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.20 0.20
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
Page 4 of 24

Water Quality Drawdown - CCEP - LOT #6
687.00
690.00
693.00
696.00
699.00
702.00
705.00
708.00
711.00
714.00
717.00
720.00
723.00
726.00
729.00
732.00
735.00
738.00
741.00
744.00
747.00
750.00
753.00
756.00
759.00
762.00
765.00
768.00
771.00
774.00
777.00
780.00
783.00
786.00
789.00
792.00
795.00
798.00
801.00
804.00
807.00
810.00
813.00
816.00
819.00
822.00
825.00
828.00
831.00
834.00
837.00
840.00
843.00
846.00
849.00
852.00
855.00
858.00
861.00
864.00
867.00
870.00
873.00
876.00
879.00
882.00
885.00
888.00
891.00
894.00
897.00
900.00
903.00
906.00
909.00
912.00
915.00
918.00
27279
27244
27210
27176
27141
27107
27072
27038
27004
26970
26935
26901
26867
26833
26798
26764
26730
26696
26662
26628
26594
26560
26526
26492
26458
26424
26390
26356
26322
26288
26254
26220
26186
26153
26119
26085
26051
26018
25984
25950
25917
25883
25849
25816
25782
25749
25715
25682
25648
25615
25581
25548
25514
25481
25448
25414
25381
25348
25314
25281
25248
25215
25182
25148
25115
25082
25049
25016
24983
24950
24917
24884
24851
24818
24785
24752
24719
24686
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.19 0.19
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
Page 5 of 24

Water Quality Drawdown - CCEP - LOT #6
921.00
924.00
927.00
930.00
933.00
936.00
939.00
942.00
945.00
948.00
951.00
954.00
957.00
960.00
963.00
966.00
969.00
972.00
975.00
978.00
981.00
984.00
987.00
990.00
993.00
996.00
999.00
1002.00
1005.00
1008.00
1011.00
1014.00
1017.00
1020.00
1023.00
1026.00
1029.00
1032.00
1035.00
1038.00
1041.00
1044.00
1047.00
1050.00
1053.00
1056.00
1059.00
1062.00
1065.00
1068.00
1071.00
1074.00
1077.00
1080.00
1083.00
1086.00
1089.00
1092.00
1095.00
1098.00
1101.00
1104.00
1107.00
1110.00
1113.00
1116.00
1119.00
1122.00
1125.00
1128.00
1131.00
1134.00
1137.00
1140.00
1143.00
1146.00
1149.00
1152.00
24653
24620
24587
24555
24522
24489
24456
24424
24391
24358
24326
24293
24260
24228
24195
24163
24130
24098
24065
24033
24000
23968
23935
23903
23871
23838
23806
23774
23741
23709
23677
23644
23612
23580
23548
23516
23484
23452
23419
23387
23355
23323
23291
23259
23227
23196
23164
23132
23100
23068
23036
23004
22973
22941
22909
22877
22846
22814
22782
22751
22719
22687
22656
22624
22593
22561
22530
22498
22467
22435
22404
22372
22341
22310
22278
22247
22216
22185
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.18 0.18
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
Page 6 of 24

Water Quality Drawdown - CCEP - LOT #6
1155.00 0.00 22153 1.12
1158.00 0.00 22122 1.12
1161.00 0.00 22091 1.11
1164.00 0.00 22060 1.11
1167.00 0.00 22028 1.11
1170.00 0.00 21997 1.11
1173.00 0.00 21966 1.11
1176.00 0.00 21935 1.11
1179.00 0.00 21904 1.11
1182.00 0.00 21873 1.10
1185.00 0.00 21842 1.10
1188.00 0.00 21811 1.10
1191.00 0.00 21780 1.10
1194.00 0.00 21749 1.10
1197.00 0.00 21718 1.10
1200.00 0.00 21687 1.10
1203.00 0.00 21656 1.09
1206.00 0.00 21625 1.09
1209.00 0.00 21594 1.09
1212.00 0.00 21563 1.09
1215.00 0.00 21533 1.09
1218.00 0.00 21502 1.09
1221.00 0.00 21471 1.08
1224.00 0.00 21440 1.08
1227.00 0.00 21410 1.08
1230.00 0.00 21379 1.08
1233.00 0.00 21348 1.08
1236.00 0.00 21317 1.08
1239.00 0.00 21287 1.08
1242.00 0.00 21256 1.07
1245.00 0.00 21225 1.07
1248.00 0.00 21195 1.07
1251.00 0.00 21164 1.07
1254.00 0.00 21134 1.07
1257.00 0.00 21103 1.07
1260.00 0.00 21073 1.07
1263.00 0.00 21042 1.06
1266.00 0.00 21012 1.06
1269.00 0.00 20981 1.06
1272.00 0.00 20951 1.06
1275.00 0.00 20920 1.06
1278.00 0.00 20890 1.06
1281.00 0.00 20860 1.06
1284.00 0.00 20829 1.05
1287.00 0.00 20799 1.05
1290.00 0.00 20769 1.05
1293.00 0.00 20738 1.05
1296.00 0.00 20708 1.05
1299.00 0.00 20678 1.05
1302.00 0.00 20648 1.05
1305.00 0.00 20617 1.04
1308.00 0.00 20587 1.04
1311.00 0.00 20557 1.04
1314.00 0.00 20527 1.04
1317.00 0.00 20497 1.04
1320.00 0.00 20467 1.04
1323.00 0.00 20437 1.04
1326.00 0.00 20406 1.03
1329.00 0.00 20376 1.03
1332.00 0.00 20346 1.03
1335.00 0.00 20316 1.03
1338.00 0.00 20286 1.03
1341.00 0.00 20256 1.03
1344.00 0.00 20227 1.03
1347.00 0.00 20197 1.02
1350.00 0.00 20167 1.02
1353.00 0.00 20137 1.02
1356.00 0.00 20107 1.02
1359.00 0.00 20077 1.02
1362.00 0.00 20047 1.02
1365.00 0.00 20018 1.02
1368.00 0.00 19988 1.01
1371.00 0.00 19958 1.01
1374.00 0.00 19928 1.01
1377.00 0.00 19899 1.01
1380.00 0.00 19869 1.01
1383.00 0.00 19839 1.01
1386.00 0.00 19810 1.01
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.17 0.17
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
Page 7 of 24

Water Quality Drawdown - CCEP - LOT #6
1389.00
1392.00
1395.00
1398.00
1401.00
1404.00
1407.00
1410.00
1413.00
1416.00
1419.00
1422.00
1425.00
1428.00
1431.00
1434.00
1437.00
1440.00
1443.00
1446.00
1449.00
1452.00
1455.00
1458.00
1461.00
1464.00
1467.00
1470.00
1473.00
1476.00
1479.00
1482.00
1485.00
1488.00
1491.00
1494.00
1497.00
1500.00
1503.00
1506.00
1509.00
1512.00
1515.00
1518.00
1521.00
1524.00
1527.00
1530.00
1533.00
1536.00
1539.00
1542.00
1545.00
1548.00
1551.00
1554.00
1557.00
1560.00
1563.00
1566.00
1569.00
1572.00
1575.00
1578.00
1581.00
1584.00
1587.00
1590.00
1593.00
1596.00
1599.00
1602.00
1605.00
1608.00
1611.00
1614.00
1617.00
1620.00
19780
19750
19721
19691
19662
19632
19603
19573
19544
19514
19485
19456
19426
19397
19368
19338
19309
19280
19250
19221
19192
19163
19134
19105
19075
19046
19017
18988
18959
18930
18901
18872
18843
18814
18785
18756
18728
18699
18670
18641
18612
18584
18555
18526
18497
18469
18440
18411
18383
18354
18326
18297
18269
18240
18212
18183
18155
18126
18098
18069
18041
18013
17984
17956
17928
17900
17871
17843
17815
17787
17759
17731
17702
17674
17646
17618
17590
17562
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
0.16 0.16
Page 8 of 24

Water Quality Drawdown - CCEP - LOT #6
1623.00
1626.00
1629.00
1632.00
1635.00
1638.00
1641.00
1644.00
1647.00
1650.00
1653.00
1656.00
1659.00
1662.00
1665.00
1668.00
1671.00
1674.00
1677.00
1680.00
1683.00
1686.00
1689.00
1692.00
1695.00
1698.00
1701.00
1704.00
1707.00
1710.00
1713.00
1716.00
1719.00
1722.00
1725.00
1728.00
1731.00
1734.00
1737.00
1740.00
1743.00
1746.00
1749.00
1752.00
1755.00
1758.00
1761.00
1764.00
1767.00
1770.00
1773.00
1776.00
1779.00
1782.00
1785.00
1788.00
1791.00
1794.00
1797.00
1800.00
1803.00
1806.00
1809.00
1812.00
1815.00
1818.00
1821.00
1824.00
1827.00
1830.00
1833.00
1836.00
1839.00
1842.00
1845.00
1848.00
1851.00
1854.00
17534
17506
17478
17450
17422
17395
17367
17339
17311
17283
17256
17228
17200
17172
17145
17117
17089
17062
17034
17007
16979
16951
16924
16896
16869
16841
16814
16787
16759
16732
16705
16677
16650
16623
16595
16568
16541
16514
16486
16459
16432
16405
16378
16351
16324
16297
16270
16243
16216
16189
16162
16135
16108
16081
16054
16028
16001
15974
15947
15921
15894
15867
15841
15814
15787
15761
15734
15707
15681
15654
15628
15601
15575
15549
15522
15496
15469
15443
0.16 0.16
0.16 0.16
0.16 0.16
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
Page 9 of 24

Water Quality Drawdown - CCEP - LOT #6
1857.00 0.00 15417 0.79
1860.00 0.00 15390 0.79
1863.00 0.00 15364 0.79
1866.00 0.00 15338 0.79
1869.00 0.00 15312 0.79
1872.00 0.00 15285 0.79
1875.00 0.00 15259 0.79
1878.00 0.00 15233 0.78
1881.00 0.00 15207 0.78
1884.00 0.00 15181 0.78
1887.00 0.00 15154 0.78
1890.00 0.00 15128 0.78
1893.00 0.00 15102 0.78
1896.00 0.00 15076 0.78
1899.00 0.00 15050 0.78
1902.00 0.00 15024 0.77
1905.00 0.00 14998 0.77
1908.00 0.00 14972 0.77
1911.00 0.00 14946 0.77
1914.00 0.00 14920 0.77
1917.00 0.00 14894 0.77
1920.00 0.00 14869 0.77
1923.00 0.00 14843 0.77
1926.00 0.00 14817 0.76
1929.00 0.00 14791 0.76
1932.00 0.00 14765 0.76
1935.00 0.00 14739 0.76
1938.00 0.00 14714 0.76
1941.00 0.00 14688 0.76
1944.00 0.00 14662 0.76
1947.00 0.00 14637 0.76
1950.00 0.00 14611 0.75
1953.00 0.00 14585 0.75
1956.00 0.00 14560 0.75
1959.00 0.00 14534 0.75
1962.00 0.00 14508 0.75
1965.00 0.00 14483 0.75
1968.00 0.00 14457 0.75
1971.00 0.00 14432 0.75
1974.00 0.00 14406 0.74
1977.00 0.00 14381 0.74
1980.00 0.00 14355 0.74
1983.00 0.00 14330 0.74
1986.00 0.00 14304 0.74
1989.00 0.00 14279 0.74
1992.00 0.00 14254 0.74
1995.00 0.00 14228 0.74
1998.00 0.00 14203 0.73
2001.00 0.00 14178 0.73
2004.00 0.00 14152 0.73
2007.00 0.00 14127 0.73
2010.00 0.00 14102 0.73
2013.00 0.00 14077 0.73
2016.00 0.00 14051 0.73
2019.00 0.00 14026 0.73
2022.00 0.00 14001 0.72
2025.00 0.00 13976 0.72
2028.00 0.00 13951 0.72
2031.00 0.00 13926 0.72
2034.00 0.00 13 901 0.72
2037.00 0.00 13876 0.72
2040.00 0.00 13851 0.72
2043.00 0.00 13826 0.72
2046.00 0.00 13 801 0.71
2049.00 0.00 13776 0.71
2052.00 0.00 13751 0.71
2055.00 0.00 13726 0.71
2058.00 0.00 13 701 0.71
2061.00 0.00 13676 0.71
2064.00 0.00 13 651 0.71
2067.00 0.00 13626 0.71
2070.00 0.00 13 601 0.70
2073.00 0.00 13577 0.70
2076.00 0.00 13552 0.70
2079.00 0.00 13527 0.70
2082.00 0.00 13502 0.70
2085.00 0.00 13478 0.70
2088.00 0.00 13453 0.70
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.15 0.15
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
Page 10 of 24

Water Quality Drawdown - CCEP - LOT #6
2091.00 0.00 13428 0.70
2094.00 0.00 13404 0.69
2097.00 0.00 13379 0.69
2100.00 0.00 13354 0.69
2103.00 0.00 13330 0.69
2106.00 0.00 13305 0.69
2109.00 0.00 13281 0.69
2112.00 0.00 13256 0.69
2115.00 0.00 13232 0.69
2118.00 0.00 13207 0.69
2121.00 0.00 13183 0.68
2124.00 0.00 13158 0.68
2127.00 0.00 13134 0.68
2130.00 0.00 13109 0.68
2133.00 0.00 13085 0.68
2136.00 0.00 13061 0.68
2139.00 0.00 13036 0.68
2142.00 0.00 13012 0.68
2145.00 0.00 12988 0.67
2148.00 0.00 12964 0.67
2151.00 0.00 12939 0.67
2154.00 0.00 12915 0.67
2157.00 0.00 12891 0.67
2160.00 0.00 12867 0.67
2163.00 0.00 12843 0.67
2166.00 0.00 12818 0.67
2169.00 0.00 12794 0.66
2172.00 0.00 12770 0.66
2175.00 0.00 12746 0.66
2178.00 0.00 12722 0.66
2181.00 0.00 12698 0.66
2184.00 0.00 12674 0.66
2187.00 0.00 12650 0.66
2190.00 0.00 12626 0.66
2193.00 0.00 12602 0.66
2196.00 0.00 12578 0.65
2199.00 0.00 12554 0.65
2202.00 0.00 12530 0.65
2205.00 0.00 12507 0.65
2208.00 0.00 12483 0.65
2211.00 0.00 12459 0.65
2214.00 0.00 12435 0.65
2217.00 0.00 12411 0.65
2220.00 0.00 12388 0.64
2223.00 0.00 12364 0.64
2226.00 0.00 12340 0.64
2229.00 0.00 12317 0.64
2232.00 0.00 12293 0.64
2235.00 0.00 12269 0.64
2238.00 0.00 12246 0.64
2241.00 0.00 12222 0.64
2244.00 0.00 12198 0.64
2247.00 0.00 12175 0.63
2250.00 0.00 12151 0.63
2253.00 0.00 12128 0.63
2256.00 0.00 12104 0.63
2259.00 0.00 12081 0.63
2262.00 0.00 12057 0.63
2265.00 0.00 12034 0.63
2268.00 0.00 12011 0.63
2271.00 0.00 11987 0.63
2274.00 0.00 11964 0.62
2277.00 0.00 11940 0.62
2280.00 0.00 11917 0.62
2283.00 0.00 11894 0.62
2286.00 0.00 11871 0.62
2289.00 0.00 11847 0.62
2292.00 0.00 11824 0.62
2295.00 0.00 11801 0.62
2298.00 0.00 11778 0.61
2301.00 0.00 11755 0.61
2304.00 0.00 11731 0.61
2307.00 0.00 11708 0.61
2310.00 0.00 11685 0.61
2313.00 0.00 11662 0.61
2316.00 0.00 11639 0.61
2319.00 0.00 11616 0.61
2322.00 0.00 11593 0.61
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.14 0.14
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
Page 11 of 24

Water Quality Drawdown - CCEP - LOT #6
2325.00 0.00 11570 0.60
2328.00 0.00 11547 0.60
2331.00 0.00 11524 0.60
2334.00 0.00 11501 0.60
2337.00 0.00 11478 0.60
2340.00 0.00 11455 0.60
2343.00 0.00 11432 0.60
2346.00 0.00 11410 0.60
2349.00 0.00 11387 0.60
2352.00 0.00 11364 0.59
2355.00 0.00 11341 0.59
2358.00 0.00 11318 0.59
2361.00 0.00 11296 0.59
2364.00 0.00 11273 0.59
2367.00 0.00 11250 0.59
2370.00 0.00 11228 0.59
2373.00 0.00 11205 0.59
2376.00 0.00 11182 0.59
2379.00 0.00 11160 0.58
2382.00 0.00 11137 0.58
2385.00 0.00 11115 0.58
2388.00 0.00 11092 0.58
2391.00 0.00 11070 0.58
2394.00 0.00 11047 0.58
2397.00 0.00 11025 0.58
2400.00 0.00 11002 0.58
2403.00 0.00 10980 0.58
2406.00 0.00 10957 0.57
2409.00 0.00 10935 0.57
2412.00 0.00 10913 0.57
2415.00 0.00 10890 0.57
2418.00 0.00 10868 0.57
2421.00 0.00 10846 0.57
2424.00 0.00 10823 0.57
2427.00 0.00 10801 0.57
2430.00 0.00 10779 0.57
2433.00 0.00 10757 0.56
2436.00 0.00 10734 0.56
2439.00 0.00 10712 0.56
2442.00 0.00 10690 0.56
2445.00 0.00 10668 0.56
2448.00 0.00 10646 0.56
2451.00 0.00 10624 0.56
2454.00 0.00 10602 0.56
2457.00 0.00 10580 0.56
2460.00 0.00 10558 0.55
2463.00 0.00 10536 0.55
2466.00 0.00 10514 0.55
2469.00 0.00 10492 0.55
2472.00 0.00 10470 0.55
2475.00 0.00 10448 0.55
2478.00 0.00 10426 0.55
2481.00 0.00 10404 0.55
2484.00 0.00 10382 0.55
2487.00 0.00 10360 0.54
2490.00 0.00 10339 0.54
2493.00 0.00 10317 0.54
2496.00 0.00 10295 0.54
2499.00 0.00 10273 0.54
2502.00 0.00 10251 0.54
2505.00 0.00 10230 0.54
2508.00 0.00 10208 0.54
2511.00 0.00 10186 0.54
2514.00 0.00 10165 0.54
2517.00 0.00 10143 0.53
2520.00 0.00 10122 0.53
2523.00 0.00 10100 0.53
2526.00 0.00 10079 0.53
2529.00 0.00 10057 0.53
2532.00 0.00 10036 0.53
2535.00 0.00 10014 0.53
2538.00 0.00 9993 0.53
2541.00 0.00 9971 0.53
2544.00 0.00 9950 0.52
2547.00 0.00 9928 0.52
2550.00 0.00 9907 0.52
2553.00 0.00 9886 0.52
2556.00 0.00 9864 0.52
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.13 0.13
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
Page 12 of 24

Water Quality Drawdown - CCEP - LOT #6
2559.00
2562.00
2565.00
2568.00
2571.00
2574.00
2577.00
2580.00
2583.00
2586.00
2589.00
2592.00
2595.00
2598.00
2601.00
2604.00
2607.00
2610.00
2613.00
2616.00
2619.00
2622.00
2625.00
2628.00
2631.00
2634.00
2637.00
2640.00
2643.00
2646.00
2649.00
2652.00
2655.00
2658.00
2661.00
2664.00
2667.00
2670.00
2673.00
2676.00
2679.00
2682.00
2685.00
2688.00
2691.00
2694.00
2697.00
2700.00
2703.00
2706.00
2709.00
2712.00
2715.00
2718.00
2721.00
2724.00
2727.00
2730.00
2733.00
2736.00
2739.00
2742.00
2745.00
2748.00
2751.00
2754.00
2757.00
2760.00
2763.00
2766.00
2769.00
2772.00
2775.00
2778.00
2781.00
2784.00
2787.00
2790.00
9843
9822
9800
9779
9758
9737
9716
9694
9673
9652
9631
9610
9589
9568
9547
9526
9505
9484
9463
9442
9421
9401
9380
9359
9338
9317
9297
9276
9255
9235
9214
9193
9173
9152
9132
9111
9090
9070
9049
9029
9009
8988
8968
8947
8927
8907
8886
8866
8846
8826
8805
8785
8765
8745
8725
8705
8685
8665
8645
8625
8605
8585
8565
8545
8525
8505
8485
8465
8445
8426
8406
8386
8366
8347
8327
8307
8288
8268
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.12 0.12
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
Page 13 of 24

Water Quality Drawdown - CCEP - LOT #6
2793.00
2796.00
2799.00
2802.00
2805.00
2808.00
2811.00
2814.00
2817.00
2820.00
2823.00
2826.00
2829.00
2832.00
2835.00
2838.00
2841.00
2844.00
2847.00
2850.00
2853.00
2856.00
2859.00
2862.00
2865.00
2868.00
2871.00
2874.00
2877.00
2880.00
2883.00
2886.00
2889.00
2892.00
2895.00
2898.00
2901.00
2904.00
2907.00
2910.00
2913.00
2916.00
2919.00
2922.00
2925.00
2928.00
2931.00
2934.00
2937.00
2940.00
2943.00
2946.00
2949.00
2952.00
2955.00
2958.00
2961.00
2964.00
2967.00
2970.00
2973.00
2976.00
2979.00
2982.00
2985.00
2988.00
2991.00
2994.00
2997.00
3000.00
3003.00
3006.00
3009.00
3012.00
3015.00
3018.00
3021.00
3024.00
8248
8229
8209
8190
8170
8151
8131
8112
8092
8073
8054
8034
8015
7996
7976
7957
7938
7919
7899
7880
7861
7842
7823
7804
7785
7765
7746
7727
7708
7690
7671
7652
7633
7614
7595
7576
7557
7539
7520
7501
7482
7464
7445
7426
7408
7389
7371
7352
7333
7315
7296
7278
7259
7241
7223
7204
7186
7168
7149
7131
7113
7094
7076
7058
7040
7022
7003
6985
6967
6949
6931
6913
6895
6877
6859
6841
6823
6805
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.11 0.11
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
Page 14 of 24

Water Quality Drawdown - CCEP - LOT #6
3027.00
3030.00
3033.00
3036.00
3039.00
3042.00
3045.00
3048.00
3051.00
3054.00
3057.00
3060.00
3063.00
3066.00
3069.00
3072.00
3075.00
3078.00
3081.00
3084.00
3087.00
3090.00
3093.00
3096.00
3099.00
3102.00
3105.00
3108.00
3111.00
3114.00
3117.00
3120.00
3123.00
3126.00
3129.00
3132.00
3135.00
3138.00
3141.00
3144.00
3147.00
3150.00
3153.00
3156.00
3159.00
3162.00
3165.00
3168.00
3171.00
3174.00
3177.00
3180.00
3183.00
3186.00
3189.00
3192.00
3195.00
3198.00
3201.00
3204.00
3207.00
3210.00
3213.00
3216.00
3219.00
3222.00
3225.00
3228.00
3231.00
3234.00
3237.00
3240.00
3243.00
3246.00
3249.00
3252.00
3255.00
3258.00
6787
6770
6752
6734
6716
6698
6681
6663
6645
6628
6610
6592
6575
6557
6539
6522
6504
6487
6469
6452
6435
6417
6400
6382
6365
6348
6330
6313
6296
6279
6261
6244
6227
6210
6193
6176
6159
6142
6125
6108
6091
6074
6057
6040
6023
6006
5989
5972
5955
5939
5922
5905
5888
5872
5855
5838
5822
5805
5789
5772
5756
5739
5723
5706
5690
5673
5657
5640
5624
5608
5591
5575
5559
5543
5526
5510
5494
5478
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.10 0.10
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
Page 15 of 24

Water Quality Drawdown - CCEP - LOT #6
3261.00
3264.00
3267.00
3270.00
3273.00
3276.00
3279.00
3282.00
3285.00
3288.00
3291.00
3294.00
3297.00
3300.00
3303.00
3306.00
3309.00
3312.00
3315.00
3318.00
3321.00
3324.00
3327.00
3330.00
3333.00
3336.00
3339.00
3342.00
3345.00
3348.00
3351.00
3354.00
3357.00
3360.00
3363.00
3366.00
3369.00
3372.00
3375.00
3378.00
3381.00
3384.00
3387.00
3390.00
3393.00
3396.00
3399.00
3402.00
3405.00
3408.00
3411.00
3414.00
3417.00
3420.00
3423.00
3426.00
3429.00
3432.00
3435.00
3438.00
3441.00
3444.00
3447.00
3450.00
3453.00
3456.00
3459.00
3462.00
3465.00
3468.00
3471.00
3474.00
3477.00
3480.00
3483.00
3486.00
3489.00
3492.00
5462
5446
5429
5413
5397
5381
5365
5349
5333
5317
5302
5286
5270
5254
5238
5222
5207
5191
5175
5159
5144
5128
5112
5097
5081
5066
5050
5035
5019
5004
4988
4973
4957
4942
4926
4911
4896
4881
4865
4850
4835
4820
4804
4789
4774
4759
4744
4729
4714
4699
4684
4669
4654
4639
4624
4609
4594
4579
4564
4550
4535
4520
4505
4491
4476
4461
4447
4432
4417
4403
4388
4374
4359
4345
4330
4316
4301
4287
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.09 0.09
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
Page 16 of 24

Water Quality Drawdown - CCEP - LOT #6
3495.00 0.00 4273 0.24
3498.00 0.00 4258 0.24
3501.00 0.00 4244 0.23
3504.00 0.00 4230 0.23
3507.00 0.00 4215 0.23
3510.00 0.00 4201 0.23
3513.00 0.00 4187 0.23
3516.00 0.00 4173 0.23
3519.00 0.00 4159 0.23
3522.00 0.00 4144 0.23
3525.00 0.00 4130 0.23
3528.00 0.00 4116 0.23
3531.00 0.00 4102 0.23
3534.00 0.00 4088 0.23
3537.00 0.00 4074 0.23
3540.00 0.00 4060 0.22
3543.00 0.00 4046 0.22
3546.00 0.00 4032 0.22
3549.00 0.00 4018 0.22
3552.00 0.00 4004 0.22
3555.00 0.00 3990 0.22
3558.00 0.00 3976 0.22
3561.00 0.00 3962 0.22
3564.00 0.00 3948 0.22
3567.00 0.00 3935 0.22
3570.00 0.00 3921 0.22
3573.00 0.00 3907 0.22
3576.00 0.00 3893 0.22
3579.00 0.00 3880 0.22
3582.00 0.00 3866 0.21
3585.00 0.00 3852 0.21
3588.00 0.00 3839 0.21
3591.00 0.00 3825 0.21
3594.00 0.00 3811 0.21
3597.00 0.00 3798 0.21
3600.00 0.00 3784 0.21
3603.00 0.00 3771 0.21
3606.00 0.00 3757 0.21
3609.00 0.00 3744 0.21
3612.00 0.00 3730 0.21
3615.00 0.00 3717 0.21
3618.00 0.00 3703 0.21
3621.00 0.00 3690 0.21
3624.00 0.00 3676 0.20
3627.00 0.00 3663 0.20
3630.00 0.00 3650 0.20
3633.00 0.00 3636 0.20
3636.00 0.00 3623 0.20
3639.00 0.00 3610 0.20
3642.00 0.00 3597 0.20
3645.00 0.00 3583 0.20
3648.00 0.00 3570 0.20
3651.00 0.00 3557 0.20
3654.00 0.00 3544 0.20
3657.00 0.00 3531 0.20
3660.00 0.00 3518 0.20
3663.00 0.00 3504 0.20
3666.00 0.00 3491 0.19
3669.00 0.00 3478 0.19
3672.00 0.00 3465 0.19
3675.00 0.00 3452 0.19
3678.00 0.00 3439 0.19
3681.00 0.00 3426 0.19
3684.00 0.00 3413 0.19
3687.00 0.00 3401 0.19
3690.00 0.00 3388 0.19
3693.00 0.00 3375 0.19
3696.00 0.00 3362 0.19
3699.00 0.00 3349 0.19
3702.00 0.00 3336 0.19
3705.00 0.00 3324 0.19
3708.00 0.00 3311 0.19
3711.00 0.00 3298 0.18
3714.00 0.00 3285 0.18
3717.00 0.00 3273 0.18
3720.00 0.00 3260 0.18
3723.00 0.00 3248 0.18
3726.00 0.00 3235 0.18
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.08 0.08
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
Page 17 of 24

Water Quality Drawdown - CCEP - LOT #6
3729.00
3732.00
3735.00
3738.00
3741.00
3744.00
3747.00
3750.00
3753.00
3756.00
3759.00
3762.00
3765.00
3768.00
3771.00
3774.00
3777.00
3780.00
3783.00
3786.00
3789.00
3792.00
3795.00
3798.00
3801.00
3804.00
3807.00
3810.00
3813.00
3816.00
3819.00
3822.00
3825.00
3828.00
3831.00
3834.00
3837.00
3840.00
3843.00
3846.00
3849.00
3852.00
3855.00
3858.00
3861.00
3864.00
3867.00
3870.00
3873.00
3876.00
3879.00
3882.00
3885.00
3888.00
3891.00
3894.00
3897.00
3900.00
3903.00
3906.00
3909.00
3912.00
3915.00
3918.00
3921.00
3924.00
3927.00
3930.00
3933.00
3936.00
3939.00
3942.00
3945.00
3948.00
3951.00
3954.00
3957.00
3960.00
3222
3210
3197
3185
3172
3160
3147
3135
3123
3110
3098
3086
3073
3061
3049
3036
3024
3012
3000
2988
2976
2964
2951
2939
2927
2915
2903
2891
2880
2868
2856
2844
2832
2820
2808
2797
2785
2773
2762
2750
2738
2727
2715
2703
2692
2680
2669
2657
2646
2634
2623
2612
2600
2589
2578
2566
2555
2544
2533
2521
2510
2499
2488
2477
2466
2455
2444
2433
2422
2411
2400
2389
2378
2367
2356
2345
2334
2324
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.07 0.07
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
Page 18 of 24

Water Quality Drawdown - CCEP - LOT #6
3963.00
3966.00
3969.00
3972.00
3975.00
3978.00
3981.00
3984.00
3987.00
3990.00
3993.00
3996.00
3999.00
4002.00
4005.00
4008.00
4011.00
4014.00
4017.00
4020.00
4023.00
4026.00
4029.00
4032.00
4035.00
4038.00
4041.00
4044.00
4047.00
4050.00
4053.00
4056.00
4059.00
4062.00
4065.00
4068.00
4071.00
4074.00
4077.00
4080.00
4083.00
4086.00
4089.00
4092.00
4095.00
4098.00
4101.00
4104.00
4107.00
4110.00
4113.00
4116.00
4119.00
4122.00
4125.00
4128.00
4131.00
4134.00
4137.00
4140.00
4143.00
4146.00
4149.00
4152.00
4155.00
4158.00
4161.00
4164.00
4167.00
4170.00
4173.00
4176.00
4179.00
4182.00
4185.00
4188.00
4191.00
4194.00
2313
2302
2291
2281
2270
2259
2249
2238
2228
2217
2207
2196
2186
2175
2165
2154
2144
2134
2123
2113
2103
2092
2082
2072
2062
2052
2041
2031
2021
2011
2001
1991
1981
1971
1961
1951
1941
1931
1922
1912
1902
1892
1882
1873
1863
1853
1844
1834
1824
1815
1805
1796
1786
1777
1767
1758
1748
1739
1729
1720
1711
1701
1692
1683
1674
1664
1655
1646
1637
1628
1619
1610
1601
1592
1583
1574
1565
1556
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.06 0.06
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
Page 19 of 24

Water Quality Drawdown - CCEP - LOT #6
4197.00
4200.00
4203.00
4206.00
4209.00
4212.00
4215.00
4218.00
4221.00
4224.00
4227.00
4230.00
4233.00
4236.00
4239.00
4242.00
4245.00
4248.00
4251.00
4254.00
4257.00
4260.00
4263.00
4266.00
4269.00
4272.00
4275.00
4278.00
4281.00
4284.00
4287.00
4290.00
4293.00
4296.00
4299.00
4302.00
4305.00
4308.00
4311.00
4314.00
4317.00
4320.00
4323.00
4326.00
4329.00
4332.00
4335.00
4338.00
4341.00
4344.00
4347.00
4350.00
4353.00
4356.00
4359.00
4362.00
4365.00
4368.00
4371.00
4374.00
4377.00
4380.00
4383.00
4386.00
4389.00
4392.00
4395.00
4398.00
4401.00
4404.00
4407.00
4410.00
4413.00
4416.00
4419.00
4422.00
4425.00
4428.00
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.05 0.05
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
Page 20 of 24

Water Quality Drawdown - CCEP - LOT #6
4431.00 0.00 927 0.06
4434.00 0.00 921 0.06
4437.00 0.00 914 0.05
4440.00 0.00 907 0.05
4443.00 0.00 900 0.05
4446.00 0.00 893 0.05
4449.00 0.00 886 0.05
4452.00 0.00 879 0.05
4455.00 0.00 872 0.05
4458.00 0.00 866 0.05
4461.00 0.00 859 0.05
4464.00 0.00 852 0.05
4467.00 0.00 845 0.05
4470.00 0.00 839 0.05
4473.00 0.00 832 0.05
4476.00 0.00 826 0.05
4479.00 0.00 819 0.05
4482.00 0.00 812 0.05
4485.00 0.00 806 0.05
4488.00 0.00 799 0.05
4491.00 0.00 793 0.05
4494.00 0.00 786 0.05
4497.00 0.00 780 0.05
4500.00 0.00 773 0.05
4503.00 0.00 767 0.05
4506.00 0.00 761 0.05
4509.00 0.00 754 0.05
4512.00 0.00 748 0.05
4515.00 0.00 742 0.05
4518.00 0.00 735 0.04
4521.00 0.00 729 0.04
4524.00 0.00 723 0.04
4527.00 0.00 717 0.04
4530.00 0.00 711 0.04
4533.00 0.00 704 0.04
4536.00 0.00 698 0.04
4539.00 0.00 692 0.04
4542.00 0.00 686 0.04
4545.00 0.00 680 0.04
4548.00 0.00 674 0.04
4551.00 0.00 668 0.04
4554.00 0.00 662 0.04
4557.00 0.00 656 0.04
4560.00 0.00 650 0.04
4563.00 0.00 644 0.04
4566.00 0.00 639 0.04
4569.00 0.00 633 0.04
4572.00 0.00 627 0.04
4575.00 0.00 621 0.04
4578.00 0.00 615 0.04
4581.00 0.00 610 0.04
4584.00 0.00 604 0.04
4587.00 0.00 598 0.04
4590.00 0.00 592 0.04
4593.00 0.00 587 0.04
4596.00 0.00 581 0.04
4599.00 0.00 576 0.04
4602.00 0.00 570 0.04
4605.00 0.00 565 0.03
4608.00 0.00 559 0.03
4611.00 0.00 554 0.03
4614.00 0.00 548 0.03
4617.00 0.00 543 0.03
4620.00 0.00 537 0.03
4623.00 0.00 532 0.03
4626.00 0.00 526 0.03
4629.00 0.00 521 0.03
4632.00 0.00 516 0.03
4635.00 0.00 511 0.03
4638.00 0.00 505 0.03
4641.00 0.00 500 0.03
4644.00 0.00 495 0.03
4647.00 0.00 490 0.03
4650.00 0.00 485 0.03
4653.00 0.00 479 0.03
4656.00 0.00 474 0.03
4659.00 0.00 469 0.03
4662.00 0.00 464 0.03
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.04 0.04
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
Page 21 of 24

Water Quality Drawdown - CCEP - LOT #6
4665.00
4668.00
4671.00
4674.00
4677.00
4680.00
4683.00
4686.00
4689.00
4692.00
4695.00
4698.00
4701.00
4704.00
4707.00
4710.00
4713.00
4716.00
4719.00
4722.00
4725.00
4728.00
4731.00
4734.00
4737.00
4740.00
4743.00
4746.00
4749.00
4752.00
4755.00
4758.00
4761.00
4764.00
4767.00
4770.00
4773.00
4776.00
4779.00
4782.00
4785.00
4788.00
4791.00
4794.00
4797.00
4800.00
4803.00
4806.00
4809.00
4812.00
4815.00
4818.00
4821.00
4824.00
4827.00
4830.00
4833.00
4836.00
4839.00
4842.00
4845.00
4848.00
4851.00
4854.00
4857.00
4860.00
4863.00
4866.00
4869.00
4872.00
4875.00
4878.00
4881.00
4884.00
4887.00
4890.00
4893.00
4896.00
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.03 0.03
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
Page 22 of 24

Water Quality Drawdown - CCEP - LOT #6
4899.00
4902.00
4905.00
4908.00
4911.00
4914.00
4917.00
4920.00
4923.00
4926.00
4929.00
4932.00
4935.00
4938.00
4941.00
4944.00
4947.00
4950.00
4953.00
4956.00
4959.00
4962.00
4965.00
4968.00
4971.00
4974.00
4977.00
4980.00
4983.00
4986.00
4989.00
4992.00
4995.00
4998.00
5001.00
5004.00
5007.00
5010.00
5013.00
5016.00
5019.00
5022.00
5025.00
5028.00
5031.00
5034.00
5037.00
5040.00
5043.00
5046.00
5049.00
5052.00
5055.00
5058.00
5061.00
5064.00
5067.00
5070.00
5073.00
5076.00
5079.00
5082.00
5085.00
5088.00
5091.00
5094.00
5097.00
5100.00
5103.00
5106.00
5109.00
5112.00
5115.00
5118.00
5121.00
5124.00
5127.00
5130.00
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.02 0.02
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.01 0.01
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
Page 23 of 24

Water Quality Drawdown - CCEP - LOT #6
5133.00 0.00
5136.00 0.00
5139.00 0.00
5142.00 0.00
5145.00 0.00
5148.00 0.00
5151.00 0.00
5154.00 0.00
5157.00 0.00
6
5
4
4
3
3
2
2
2
5160.00 0.00 1
5163.00 0.00 1
5166.00 0.00 1
5169.00 0.00 0
5172.00 0.00 0
5175.00 0.00 0
5178.00 0.00 0
86.30 hours 3.6 days
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Pond drains completely down at time= 5178.00 min= 3.6 days
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Page 24 of 24

Outlet Structure
Riser
Elev. of Riser Crest/Top of Box =
Length of Riser =
Width of Riser =
Weir Length =
Area of Riser —
Inv. of Riser =
Height of Box
245.50 feet (inside)
4 feet (inside)
4 feet (inside)
16 feet
16 sq.ft.
238.00 feet
8.00 feet
Bouyancy Calcs
Anti -Flotation:
200.00 cf Displaced Area
1496 Gallons of Water displaced
18720 lbs Buoyancy Force (Displaced * 62.4 * 1.50 safety factor)
13024 lbs Weight of Concrete Box
56961bs Anti -Flotation Required
38.49 cf of Concrete Required, Minimum
Solid Box Buoyancy Calculations
Don't type in box below:
Use:
6.0ftx 6.0 ft Pad
1.069 ft deep
Assume Solid Box by
Oldcastle Precast
(6" wall thickness)
P:1200 ( Lee-Mcare )1200-107 (Lee County Industrial Park)\Lot #6\Engineering\Stormwater12021-06-01 Calcsl2021-06-01 PreCestBoxWeights-Buoyancy.ds
Outlet Structure - Wet Pond
Length
Outside Dimensions
5
Width 1 Depth Volume (fM3) 1 Weight (lbs)
5
8.00
200.00
29600
Inside Dimensions
4
4
7.00
112
16576
Total
88
13024
'Concrete Fill in Riser
Outlet Pipe Inv. Out=
Bottom of Riser =
Volume of Concrete in bottom of riser =
238.00 feet
238.00 feet
0.00 ft^3
1 of 1 210 PM on 6/2/2021

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc. Wednesday, Jun 2 2021
Wet Pond Outlet Channel
Trapezoidal Highlighted
Bottom Width (ft) = 6.00 Depth (ft)
Side Slopes (z:1) = 2.00, 2.00 Q (cfs)
Total Depth (ft) = 2.00 Area (sqft)
Invert Elev (ft) = 238.50 Velocity (ft/s)
Slope (%) = 1.00 Wetted Perim (ft)
N-Value = 0.078 Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
Calculations
Compute by:
Known Q (cfs)
Known Q
= 6.08
= 0.66
= 6.080
= 4.83
= 1.26
= 8.95
= 0.31
= 8.64
= 0.68
Elev (ft) Section Depth (ft)
241.00
240.50
240.00
239.50
239.00
238.50
238.00
0
2
4
6
8
10
12
14
16
2.50
2.00
1.50
1.00
0.50
0.00
-0.50
18
Reach (ft)

Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc. Wednesday, Jun 2 2021
Wet Pond Spillway
Trapezoidal Highlighted
Bottom Width (ft) = 20.00 Depth (ft)
Side Slopes (z:1) = 3.00, 3.00 Q (cfs)
Total Depth (ft) = 1.50 Area (sqft)
Invert Elev (ft) = 246.50 Velocity (ft/s)
Slope (%) = 1.00 Wetted Perim (ft)
N-Value = 0.066 Crit Depth, Yc (ft)
Top Width (ft)
EGL (ft)
Calculations
Compute by:
Known Depth (ft)
Known Depth
= 0.35
= 0.35
= 7.945
= 7.37
= 1.08
= 22.21
= 0.17
= 22.10
= 0.37
Elev (ft) Section Depth (ft)
249.00
248.50
248.00
247.50
247.00
246.50
246.00
0
5
10 15 20
Reach (ft)
25
30
35
2.50
2.00
1.50
1.00
0.50
0.00
-0.50
40

APPENDIX E
PRECIPITATION DATA
PROVIDING CIVIL /SITE & INFRASTRUCTURE CONSULTING SERVICES SINCE 1998

D0000000�oo
00000000�00
00000000�00
00000000000
00000000000
00000000�00
00000000000
00000000000
00000000�00
�����000000
0
00000000
00000000�00
00000000�00
00000000�00
��o������oo
00000000�00
00000000�00
00000000000
00000000�00
00000000�00

Precipitation depth (in)
Precipitation depth (in)
30
25
20
15
10
0
PDS-based depth -duration -frequency (DDF) curves
Latitude: 35.557E°, Longitude: -79.1583°
1
I I
I I I
m Le
. • L L
N re) L
� L
r-I N
Duration
> >
N r n
rh
r1:1
r rA
N 0
O WI
rn v to
2 5 10 25 50 100 200 500 1000
NDAAAtlas 14, Volume 2, Version 3
Average recurrence interval (years)
Created (GMT): Wed Jun 14 15:07:05 2020
Average recurrence
interval
{years)
1
2
5
10
25
50
100
200
500
1000
Duration
— 5-min
— 14-min
15-min
— 30-min
— 60-min
— 2-nr
— 3-nr
— 6 r
— 12-hr
— 24-hr
2-day
3-day
4-day
7-day
1 d-day
20-day
30-day
45-day
50-day

LEE
4oegi_A PORT
'Colon
Winston -Sal em
• • -
Greensboro
0
Durham
•
NORTH CAROLINii
• Charlotte
Fayetteville .
THE
Raleigh
Wilmington
Rocky Mount
•
• Green
ksoi
Greensboro
0
art Otte
N aa,.
Carolin!
F : etteville
Rocky: Mount
Greenvi
Wilmington
csan

Winston-Salem •
• • ;
Greensboro
Durham • Rocky Mount
•
. Raleigh
North
Caroline
Charlotte
•
Fayetteville
Greenw
•
Wilmington

D0000000�oo
00000000�00
00000000�00
00000000000
00000000000
00000000�00
00000000000
00000000000
00000000�00
�����000000
0
00000000
00000000�00
00000000�00
00000000�00
��o������oo
00000000�00
00000000�00
00000000000
00000000�00
00000000�00

Precipitation intensity (in{hr}
Precipitation intensity (in{hr}
100.000
10.000
1.000
0.100
0.010
100.000
10.000
L000
0.100
0.010
PDS-based intensity -duration -frequency (IDF) curves
Latitude: 35.5578°, Longitude: -79.1583°
E
L
rV
r-I
Duration
>, }. 7, }.
N r9 r4 ro r4 r4 rp r9 r4
-to -to -to4
rV rh r N O 0 0 YI
(NJrn v to
0.001
1
NDAAAtlas 14, Volume 2, Version 3
10 25 50 100 200 500 1000
Average recurrence interval (years)
Created (GMT): Wed Jur 14 15:08:41 2020
Average recurrence
interval
{years)
1
2
5
10
25
50
100
200
500
1000
Duration
— 5-min
— 14-min
15-min
— 30-min
— 60-min
— 2-nr
— 3-nr
— 6-hr
— 12-hr
— 24-hr
2-day
3-day
4-day
7-day
10-day
20-day
30-day
45-day
50-day

LEE
4oegi_A PORT
'Colon
Winston -Sal em
• • -
Greensboro
0
Durham
•
NORTH CAROLINii
• Charlotte
Fayetteville .
THE
Raleigh
Wilmington
Rocky Mount
•
• Green
ksoi
Greensboro
0
art Otte
N aa,.
Carolin!
F : etteville
Rocky: Mount
Greenvi
Wilmington
csan

Winston-Salem •
• • ;
Greensboro
Durham • Rocky Mount
•
. Raleigh
North
Caroline
Charlotte
•
Fayetteville
Greenw
•
Wilmington

APPENDIX F
DRAINAGE AREA MAPS
PROVIDING CIVIL /SITE & INFRASTRUCTURE CONSULTING SERVICES SINCE 1998

P:\200 ( LEE-MOORE )\200-107 (LEE COUNTY INDUSTRIAL PARK)\LOT #6\DESIGN\DAMS\2021-06-01 DAM - EC FINAL.DWG
TSB #1 DRAINAGE AREA
DISTURBED AREA (C = 0.50)
AREA = 223,340 SF = 4.74 AC
TSB #2 DRAINAGE AREA
DISTURBED AREA (C = 0.50)
AREA = 75,653 SF = 1.74 AC
80' 0
SCALE: 1" = 80'
80'
CE GROUP
301 GLENWOOD AVE. 220
RALEIGH,NC 27603
PHONE: [phone]
FAX: [phone]
www.cegroupinc.com
License # C-1739
cn
z
cn
CD CO
wa
r- U Q
w
OG I
J u N
,v OIII
Ce
W 0
V zo
V O
cn
cc
w
06/01/2021
11
NORTH

P:\200 ( LEE-MOORE )\200-107 (LEE COUNTY INDUSTRIAL PARK)\LOT #6\DESIGN\DAMS\2021-06-01 DAM - EC FINAL.DWG
• /
/ /
/ /
/ /
/
/ /
/ /
/ /
/ �/ /
TDD #1
— —9� 5
25
A
-��
_ .
- - �_ - gymv
v \ �_ - �_ ��� �t
_ — v /v
2 5g_ v -. N - --- - `
- i
— — -
:::
_ \ N `� ----- -- ---- _ ,v,v,v \ \V 1
240
- _ _ _ — — —
*----------------
zszso� v 2SS v vvvvv �:i3A v �v vv V vv vv vv A
N I v � 60
S64°46'28°E vv v�
80' 0 80'
SCALE: 1" = 80'
160'
CE GROUP
301 GLENWOOD AVE. 220
RALEIGH,NC 27603
PHONE: [phone]
FAX: [phone]
www.cegroupinc.com
License # C-1739
H
0
— J
0
W
V
0
SANFORD, NC
co
w
2
U
H
wa
< w
cnoc
1<
J w
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Z
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0
0
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w
06/01/2021
11
NORTH

P:\200 ( LEE-MOORE )\200-107 (LEE COUNTY INDUSTRIAL PARK)\LOT #6\DESIGN\DAMS\2021-06-01 DAM - EC FINAL.DWG
260
48,
-260- -
25 -' 25�"
„
+ +
1
250`
\
CCEP LOT #2 - PRE DEVELOPED FLOW - ANALYSIS POINT B
IMPERVIOUS AREA - HSG B
(C = 0.90)
AREA = 24,235 SF = 0.56 AC
OPEN SPACE - FAIR CONDITION - HSG B
(C=0.50)
AREA=151,105 SF= 3.47 AC
WOODS - FAIR CONDITION - HSG B
(C = 0.15)
AREA = 668,069 SF = 15.34 AC
TOTAL AREA = 843,382 SF = 19.36 AC
co
255
150' 0 150'
SCALE: 1" = 150'
0
0
250/
-
300'
CE GROUP
301 GLENWOOD AVE. 220
RALEIGH,NC 27603
PHONE: [phone]
FAX: [phone]
www.cegroupinc.com
License # C-1739
W
H
0
—J
0
w
V
V
SANFORD, NC
J
00
cna
>w
p
06/01/2021
11
NORTH

P:\200 ( LEE-MOORE )\200-107 (LEE COUNTY INDUSTRIAL PARK)\LOT #6\DESIGN\DAMS\2021-06-01 DAM - EC FINAL.DWG
N/F
RPRISE PARK, LLC
TRACT E
RTH OF R/W
: 9655-17-3451
B 1409 PG 900
PC 2 PG 462
10 PG26-C&D
8 PG 61, 62, & 63
13 PAGE39&40
ZONING: CZ
REA = 33.2 AC
7,829 SF / 24.055 AC
ORTION OF
E NORTH OF R/W
1409 PG 900)
TRB #1 DRAINAGE AREA - STAGE 2
DISTURBED AREA (C = 0.50)
AREA = 475,521 SF = 10.92 AC
UNDISTURBED WOODED AREA (C = 0.15)
AREA = 4,189 SF = 0.10 AC
100' 0 100'
SCALE: 1" = 100'
200'
AREA: 780,822 SF / 17.925 AC
A PORTION OF
TRACT C (DB 1409 PG 900) AND
TRACT E SOUTH OF R/W
(DB 1409 PG 900)
CE GROUP
301 GLENWOOD AVE. 220
RALEIGH,NC 27603
PHONE: [phone]
FAX: [phone]
www.cegroupinc.com
License # C-1739
co
H
0
J
w
U
z
0
0
u_
Q
06/01/2021
11
NORTH

P:\200 ( LEE-MOORE )\200-107 (LEE COUNTY INDUSTRIAL PARK)\LOT #6\DESIGN\DAMS\2021-04-01 DAM - STORMWATER.DWG
\�\IIII'IIII11 iilW \\11\*\\\\\\�"NN \\\�\\\\ '/iJ)1)1/1111(1/ / �'/ll1\ll\1\1�\
11 �\\)1\)Ill )I11'Ill\ \1\\\\\\\\\\\\\\\\ �\\\� V'• /i/ / i r-11- '
// / / / 1 ill II I I I � I I II� ��y U�> e � \ \ '\� _ 7�(k / I I 1 1 1 1 1 1
• i'Y'„ic/y✓.+ �lI I I I \�\\\lAll 1)2 )1l l 1l1 ll ` /i/ll//1 \\ \s\
0_
+_+_v, •_=tom_ -+ �3/�� i���i9 i7i�/_, y- l ( \ \`\\\\\\
+ �' A� .y4+_.-r v +y+/++r +j \ \\\\ 1 /%
+ + ++a: / G�/fi/v v �� f/yam /+/+�,+ ++ +- + + III,\ \,.i
+ + +4r -+— -r/F V/ /+//r"+-g--+�+ �.+/+ +--+ +>—+-+ + I
+++. '''' +t + {+,4/+/� '/4+4ik +_' + r ✓i+-c +-*+++'++++ IIIII�I
+ + yfr' + +a- ry r 4/ _/ /+/• + y y +/ + 4 • .F ✓ + + � --+. + is + / I / \
+ + i t s + 4/ y + / y +* + /+ /< + r + + + + +� + + + \ \
+ +' 4/ + +-z y ir�/// 9 d + /+ /+/+y+ ±�—+-� + +1 + + \ \\
+ + 4 ) 4/ / r + .+ - ✓� + + /+ +/+ + -+ + + + N. + 4 1+ + + +
+ + +/ + - * ) </+/ + /++/+/ +/ .4 +/+ ....---+ ,s .—ten + \+ + + > + + +
+ +/: 4 +7 4..4 /r 4/+/"A-/+/ +/ ' + -*�-+ + + 1+ + +4.+ + } + + ,K + +
+ �+ /al + +i+/4/+/+ -r/+ +/ /+/�/+ y + + + + I+ + + + + ,p + +
+ t +//I+ 4 +/' +/+/ l fr/r /+/+�/+/++//▪ +/r + + + + \+ + +/ + �4 + +/
+ +/+ +/+ •+/+ + +/+/+/+ + +/+t+ +/+ + + +\+ �� **
++l++ t+/+/4+/4[+t+i++/++ 1++++�+Ir+1++k++\+ ,+l++l ++ \ \ xi3+ `�_ �� `/'J/:i
I + + d +�� + +\ +\+ + \▪ + +\ +\+,,256.0' ,+
�_r\\ \\\\ \\\ // / / / 1 /
_'�� \ \ \ \ i / / / /
����.�\\�\\\\ \' / // // / /
-- \\\\ \ \ \ \\\ / / / / / f%
L' \\\�\\ / / // /
�\ \\\\�`\ \ \ \� _i // //
v\ \\AV\\ \\Av•- —v� /
�1VI \v v A \ • / /
+ +•cry+ + + +�+-+ + + + +, +� + + ++ + + .4v� + +-
2s5+ w /+ + + \+\ ' +* +v +- a + + + * + + +' 4 * A+ + + + +
+ !hi
255.0' .+- + +
LOT #8
+`+ ++ +--{ + + t +' + `V
+--+---t +.+ +' + + +- + _+_. + i-
+ + + F + -+- --+ + + * -+ + + P + + + +
+_ � s�+t' ++* k r\4� + \+ + + 5Q + +�+ + - tom +�+\+ + + +
+ + �r� + + + . +` + +' + + µ + + + + v --+ 4 c ,+ + fi t -+ +— f . +
� i� + +)+ i1 +, +,, +.A+ }++ �+4 �+ + ++++ + +-+
+ , + \* +` + + -- r -+ t + + + + ,* + +. 4 + + _.. + +\ + + �+ t +'
++ + dv + + + + +
+\+.4/+ + - + +- 3 + V + + + + + +
+ y+ +. �+ +
+ + + + +
+ < + +
+ + + + + �
POINT A
CCEP LOT #2 - PRE DEVELOPED FLOW - ANALYSIS POINT A
IMPERVIOUS AREA - HSG B
(C = 0.95, CN = 98)
AREA = 28,562 SF = 0.66 AC
OPEN SPACE - FAIR CONDITION - HSG B
(C = 0.15, CN = 69)
AREA = 43,288 SF = 0.99 AC
WOODS - FAIR CONDITION - HSG B
(C = 0.15, CN = 60)
AREA =1,118,276 SF = 25.67 AC
TOTAL AREA = 1,190,126 SF = 27.32 AC
!
//--
i` -v vv
1 1II I\ 1VvVvy v\vv / A
11 I \
/ /./ / ,l I l I r / l I / o%l
/
/ ,I- , 1
I 4
301 GLENWOOD AVE. 220
RALEIGH,NC 27603
PHONE: [phone]
FAX: [phone]

P:\200 ( LEE-MOORE )\200-107 (LEE COUNTY INDUSTRIAL PARK)\LOT #6\DESIGN\DAMS\2021-04-01 DAM - STORMWATER.DWG
1// 1111 \l 1'I'1
,\\„�1(,1 ,1,111\,i \\\\\\\\\�\
i/////////1111 ii(i �111ivvv�°vvv�i�
11/)I\\\"\ \\\\\\\\\\\
1 1 \\ \ \\\ A\\\\\\17I II
11 li 1i 1 `\\\\\i��igpi!IN
''''. '`',�..\..�.. c...\...\.... .).. c.. 256.0'
L2�5. \......\..\.�..\..�..a.., ,
�\\� \ \\ \ I 11 1, /
1A� • �vv �� / 1 1 1
����vA� vv� `� / / // / 1 /
v� �J\\\\ \\\ �// // / /
\\\ \\ \ \\\ ` / / / / /
L� ./\� �\ ,�/ // i/ /Li /
tis \ '\\\\\ \ —\ �i
\1 , A\V '.�
1v A1v v\ ��
\1 �\ \\ \-'/
\\ \ / //''
5q �\ . a.
1
%
CCEP LOT #8 - POST DEVELOPED FLOW (WET POND)
IMPERVIOUS AREA - HSG B
(C = 0.95, CN = 98)
AREA = 358,737 SF = 8.24 AC
OPEN SPACE - FAIR CONDITION - HSG B
(C = 0.15, CN = 69)
AREA = 118,762 SF = 2.73 AC
WOODS - FAIR CONDITION - HSG B
(C = 0.15, CN = 60)
AREA = 2,211 SF = 0.05 AC
ANALYSIS
POINT A /
CCEP LOT #8 - POST DEVELOPED FLOW (BYPASS A)
IMPERVIOUS AREA - HSG B
(C = 0.95, CN = 98)
AREA = 26,135 SF = 0.60 AC
OPEN SPACE - FAIR CONDITION - HSG B
(C = 0.15, CN = 69)
AREA = 126,908 SF = 2.91 AC
WOODS - FAIR CONDITION - HSG B
(C = 0.15, CN = 60)
AREA = 707,515 SF = 2.91 AC
301 GLENWOOD AVE. 220
RALEIGH,NC 27603
PHONE: [phone]
FAX: [phone]

W M I 4: [sZi7:7Mr405070/1101rKi111011M1►191:1:11:11MI V 14j1ONFIlM affelf► M F:IPAYAMM19107 151 7MiTiVl10 VI TIVe
7I
c
N
N
N \
V vv - /
\ , / / / /
7/ / /// / / //
7
�-
t
I
LEGEND
OPEN SPACE - FAIR CONDITION - HSG B
(C = 0.15, CN = 69)
WOODS - FAIR CONDITION - HSG B
(C = 0.35, CN = 60)
PAVED AREA (C = 0.95, CN = 98)
DI A2
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
DI A3
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
DI A4
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
DI A5
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
DI A6
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
DI A7
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
DI A8
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
DI A9
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
DI A10
IMPERVIOUS AREA =
GRASS AREA =
WOODED AREA =
TOTAL AREA =
DI A11
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
DI Al2
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
120'
0
DI A13
0.73 AC IMPERVIOUS AREA =
0.16 AC GRASS AREA =
0.90 AC TOTAL AREA =
0.58 AC
0.01 AC
0.59 AC
0.49 AC
0.01 AC
0.50 AC
0.66 AC
0.01 AC
0.67 AC
0.60 AC
0.01 AC
0.61 AC
1.05 AC
0.20 AC
1.24 AC
0.06 AC
0.01 AC
0.07 AC
0.13 AC
0.02 AC
0.15 AC
0.10 AC
0.08 AC
0.04 AC
0.21 AC
0.11 AC
0.06 AC
0.17 AC
0.10 AC
0.10 AC
0.20 AC
DI A14
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
CI A15
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
CI A16
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
CI A17
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
CI A18
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
CI A19
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
CI A20
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
CI A21
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
DI A22
IMPERVIOUS AREA =
GRASS AREA =
TOTAL AREA =
DI A23
IMPERVIOUS AREA =
GRASS AREA =
WOODED AREA =
TOTAL AREA =
120'
SCALE: 1" = 120'
0.12 AC
0.10 AC
0.23 AC
0.23 AC
0.05 AC
0.28 AC
0.04 AC
0.05 AC
0.09 AC
0.07 AC
0.08 AC
0.15 AC
0.29 AC
0.08 AC
0.37 AC
0.61 AC
0.06 AC
0.67 AC
0.64 AC
0.06 AC
0.70 AC
0.51 AC
0.05 AC
0.57 AC
0.49 AC
0.09 AC
0.57 AC
0.53 AC
0.10 AC
0.63 AC
0.06 AC
0.10 AC
0.01 AC
0.16 AC
240'
301 GLENWOOD AVE. 220
RALEIGH,NC 27603
PHONE: [phone]
FAX: [phone]