SW5200401_Design Calculations_20211012

STORMWATER
MANAGEMENT REPORT
FOR
MOSS BUILDINGS
LOUISBURG, FRANKLIN COUNTY, NC
OCTOBER 7, 2021
PREPARED BY:
FLM Engineering, Inc.
PO Box 91727
Raleigh, NC 27675
919.423.8975
NC License No. C-4222
•P(N CAROB .
SE
= � 033 7
yqN o.FP, '` ENGINEERING

Table of Contents
1.0 Introduction..................................................................................................................... 1
2.0 Site Description............................................................................................................... 1
3.0 Proposed Development................................................................................................... 2
4.0
Stormwater Management................................................................................................ 2
4.1
Design Data and Methodologies.................................................................................. 2
4.2
Pre -development Analysis........................................................................................... 3
4.3
Post -development Analysis.......................................................................................... 3
4.4
Stormwater Management Summary............................................................................. 4
4.5
Nutrient Reduction....................................................................................................... 5
5.0
Limitations....................................................................................................................... 6
Tables
Table 4-1 Pre -development Hydrologic Model Results
Table 4-2 Post -development Hydrologic Model Results
Table 4-3 Stormwater Management Summary
Table 4-4 Nutrient Loading Summary
© 2021 FLM Engineering, Inc. Page ii of iii October 7, 2021

Appendices
Appendix A
FEMA Firm Map
Appendix B
USGS Map Excerpt
Appendix C
Soils Map Excerpt
Appendix D
NRCS Soil Report
Appendix E
NOAA Rainfall Data
Appendix F
Pre -Development Watershed Map
Appendix G
Pre -Development Hydrologic Model
Appendix H
Post -Development Watershed Map
Appendix I
Post -Development Hydrologic Model
Appendix J
Discrete NRCS Curve Number Model and SCM Stage -Storage Table
Appendix K
SCM Supplemental Form
Appendix L
Draw Down Calculations
Appendix M
Rip Rap Energy Dissipator Calculations
Appendix N
Operations & Maintenance Agreement
Appendix O
Tar -Pamlico Accounting Tool
© 2021 FLM Engineering, Inc. Page iii of iii October 7, 2021

1.0 Introduction
Moss Rentals, LLC is proposing to construction three commercial buildings and associated site
improvements on three parcels totaling approximately 4.6 acres located at 1075 S Main St in
Louisburg, North Carolina (Franklin County PINS 2805-20-2404, 2805-20-3496, and 2805-20-
6521. This report details the stormwater management design for the project.
2.0 Site Description
The existing 4.6-acre site is comprised of three parcels that contain a single dwelling and
associated driveway. The remainder of the site is generally cleared and grassed with a non -
jurisdictional pond in the northwest corner. The site is located within the Town of Louisburg and
is subject to Phase II Post -construction Stormwater requirements.
Based on a review of Federal Emergency Management Agency (FEMA) Flood Insurance Rate
Map (FIRM) number 3720280500K, dated April 16, 2003, no portion of the parcel lies within a
FEMA designated 100-year floodplain. The FEMA FRIM is included as Appendix A.
A wetland and stream delineation was performed by Carolina Ecosystems, Inc (CEI). No
jurisdictional features exist within the site. An Approved Jurisdictional Determination (AJD)
documenting that the existing pond is non -jurisdictional has been approved by the United States
Army Corps of Engineers (USACE). Excerpts from the United States Geological Survey (USGS)
topographic 7.5' quadrangle map and USDA NRCS Soil Survey Map are included within
Appendices B and C, respectively.
The property generally drains from southwest to northeast. Topography on the site ranges from
elevation 317' to elevation 292'. Soils on the site are Hydrologic Soil Group (HSG) B as described
in the National Resources Conservation Service (NRCS) soils report in Appendix D.
© 2021 FLM Engineering, Inc. Page 1 of 6 October 7, 2021

3.0 Proposed Development
The proposed development will consist of three commercial buildings totaling 22,200 square feet
and associated parking, drive aisles, and sidewalk. The total onsite proposed impervious surface
area for the project is approximately 116,937 square feet, or 2.68 acres, which is 57.8% of the
site. Because the contains more than 24% built -upon area, the project is considered high density
by the Phase II Post -construction Stormwater standards.
4.0 Stormwater Management
4.1 Design Data and Methodologies
The design of the proposed stormwater management facilities was performed in accordance with
the North Carolina Department of Environmental Quality (NCDEQ) Stormwater Design Manual
and the Phase II Post -construction Stormwater requirements. Per the Phase II standards, high
density projects must use structural stormwater management systems that will:
• Control and treat runoff from the first one inch of rain;
• Draw down the treatment volume no faster than 48 hours, but no slower than 120 hours;
• Discharge the storage volume at a rate equal to or less than the pre -development
discharge rate for the 1-year, 24-hour storm; and
• Remove an eighty-five percent (85%) average annual amount of Total Suspended Solids
(TSS).
HydroCAD Version 8.50, a computer modeling software package, was used for the analysis of
stormwater routing and hydrology of the existing and proposed watersheds. The hydrology
calculations were performed using the Natural Resources Conservation Service (NRCS) Soil
Conservation Service (SCS) Technical Release 55 (TR-55) methodology. Franklin County lies
within the Type II rainfall distribution. The rainfall amounts for the site were obtained from the
National Oceanic and Atmospheric Administration (NOAA) and are included in Appendix E.
© 2021 FLM Engineering, Inc. Page 2 of 6 October 7, 2021

4.2 Pre -development Analysis
The pre -development watershed was approximated based on the surveyed topographic data.
The peak flow rate for the 1-year, 24-hour storm event is based on the topography, land use cover
(such as open space, grass, woods, etc.), and soil type.
The 6.63-acre existing watershed was modeled in HydroCAD as two subcatchments as described
below. Refer to Appendix F for the pre -development watershed map.
• Subcatchment 1 S (Pre -development DA-1): Subcatchment 1 S is 2.50 acres and drains
to the northwest. A time of concentration of 11.4 minutes was calculated for the
subcatchment.
• Subcatchment 2S (Pre -development DA-2): Subcatchment 2S is 4.13 acres and drains
to the northeast. Due to the existing ditch through the S Main Street right-of-way, a time
of concentration of 2.2 minutes was calculated for the subcatchment. Therefore, a
conservative time of concentration of six minutes was used for the subcatchment
The pre -development hydrologic model is included in Appendix G. Table 4-1 summarizes the pre -
development hydrologic model results.
Table 4-1
Pre -development Hydrologic Model Results
Subcatchment
1-year, 24-hour Storm Event Pre -
development Peak Flow (CFS)
Pre -development DA-1
2.92
Pre -development DA-2
5.58
4.3 Post -development Analysis
An analysis of the post -development runoff was performed using the same methods, parameters,
and assumptions as described in the pre -development analysis above. Based upon the hydrologic
© 2021 FLM Engineering, Inc. Page 3 of 6 October 7, 2021

calculations, the project does not create an increase in the peak runoff rate for the 1-year, 24-
hour storm event. Refer to Appendix H of this report for the post -development watershed map.
The 6.63-acre watershed was modeled in HydroCAD as three subcatchments as described
below.
• Subcatchment 3S (Post -development to SCM DA-1A): Subcatchment 3S is 3.78 acres
and includes the area draining to the proposed stormwater wetland. A conservative time
of concentration of six minutes was used for the subcatchment.
• Subcatchment 4S (Post -development Bypass DA-1 B): Subcatchment 4S is 0.56
acres. This subcatchment is bypass areas not treated by the proposed wetland draining
to the northwest A conservative time of concentration of six minutes was used for the
subcatchment.
• Subcatchment 5S (Post -development DA-2): Subcatchment 5S is 2.29 acres. This
subcatchment is bypass areas not treated by the proposed wetland draining to the
northeast A conservative time of concentration of six minutes was used for the
subcatchment.
The post -development hydrologic model is included in Appendix I. Table 4-2 summarizes the pre -
development hydrologic model results.
Table 4-2
Post -development Hydrologic Model Results
Subcatchment
1-year, 24-hour Storm Event Post -
development Peak Flow CFS
Post -development DA-1
0.94
Post -development DA-2
4.21
4.4 Stormwater Management Summary
This project will not increase peak flow rate for the 1-year, 24-hour storm event. Stormwater
facilities that do not increase the peak flow rate help prevent adverse downstream impacts from
© 2021 FLM Engineering, Inc. Page 4 of 6 October 7, 2021

flooding and erosion. Table 4-3 compares the pre -development and post -development peak flow
rates for the design storm event.
Table 4-3
Stormwater Management Summary
1-year, 24-hour Storm
1-year, 24-hour Storm
Subcatchment
Event Pre -development
Event Post-
% Difference
Peak Flow (CFS)
development Peak
Flow CFS
DA-1
2.92
0.94
-67.8%
DA-2
5.58
4.21
-24.6%
The stormwater control measure (SCM) was sized using the Discrete NRCS Curve Number
method to control and treat runoff from the first one inch of rain and to provide peak rate of runoff
attenuation. The hydrologic model for the Discrete NRCS Curve Number method for
Subcatchment 3S for the one -inch storm event is included Appendix J showing a runoff volume
of 0.175 acre-feet, or 7,623 cubic feet, for the directly connected impervious surface and 0.00
acre-feet for the remainder of the subcatchment. The stage -storage table for the SCM is also
included in Appendix J demonstrating that the required volume is provided. The supplemental
form for the proposed stormwater wetland is included in Appendix K. The proposed stormwater
wetland is anticipated to draw down the design volume within two to five days. Draw down
calculations are provided in Appendix L. The inlet and outlet velocities are reduced to non -erosive
velocities through the use of rip rap energy dissipators, the calculations for which are included in
Appendix M. An operations and maintenance agreement for the SCM is included in Appendix N.
4.5 Nutrient Reduction
The Tar -Pamlico accounting tool was used to calculate the pre- and post -development nutrient
loads and is included in Appendix O. The spreadsheet indicated that nitrogen and phosphorus
loading in the post -development with SCM condition is above the 4.0 pounds per acre per year
and 0.4 pounds per acre per year thresholds, respectively. Thus, the Tar -Pamlico nitrogen and
phosphorus loading requirements will be achieved through buy -down methods.
© 2021 FLM Engineering, Inc. Page 5 of 6 October 7, 2021

As shown in the Development Summary of the tool, Table 4-5 summarizes the nutrient loads for
the pre-, post-, and post -development with SCM conditions.
Table 4-4
Nutrient Loading Summary
Nutrient
Pre -development
Post -development
Post Development
with SCMs
Total Nitrogen
2.76
10.73
6.85
Loading (lb/ac/yr)
Total Phosphorus
0.46
1.16
0.73
Loading (lb/ac/yr)
5.0 Limitations
This work was performed in a manner consistent with the level of care and skill ordinarily
exercised by other members of FLM Engineering's (FLM) profession practicing in the same
locality, and under similar conditions, as of the date any services were provided. FLM's opinions
and recommendations were necessarily based on a limited number of data and observations. It
is possible that actual conditions could vary beyond the data evaluated. Therefore, FLM makes
no guarantee or warranty, express or implied, regarding any services, communications, reports,
opinions, or instruments of service provided.
© 2021 FLM Engineering, Inc. Page 6 of 6 October 7, 2021

APPENDIX A
FEMA FIRM MAP

STATE OF NORTH CAROLINA FIRM PANEL LOCATOR DIAGRAM
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SOILS MAP EXCERPT

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APPENDIX D
NRCS SOIL REPORT

USDA United States
Department of
Agriculture
N RCS
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
Franklin County,
North Carolina
Moss Buildings
March 24, 2020

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.nres.usda.gov/wps/
portal/nres/main/soils/health/) and certain conservation and engineering
applications. For more detailed information, contact your local USDA Service Center
(https:Hoffices.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=nres142p2_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

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.

Contents
Preface....................................................................................................................
2
How Soil Surveys Are Made..................................................................................5
SoilMap..................................................................................................................
8
SoilMap................................................................................................................9
Legend................................................................................................................10
MapUnit Legend................................................................................................
11
MapUnit Descriptions.........................................................................................11
Franklin County, North Carolina......................................................................13
WbD—Wake-Wateree-Wedowee complex, 8 to 15 percent slopes, rocky..13
WeB—Wedowee sandy loam, 2 to 6 percent slopes ..................................
15
WeC—Wedowee sandy loam, 6 to 10 percent slopes ................................
17
WeD—Wedowee sandy loam, 10 to 15 percent slopes ..............................
18
WuC—Wedowee-Urban land-Udorthents complex, 2 to 10 percent
slopes .......................
Soil Information for All Uses..
Soil Properties and Qualities.
Soil Qualities and Features
Hydrologic Soil Group.....
References ...............................
20
22
22
22
22
27

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

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

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.

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.

741480
36° 5' 13" N I.J.
z
Soil Ma10may not l vaI at this sole.
36° 4' 59" N 10.
741480 741550 741620 741690 741760
Map Scale: 1:3,120 if printed on A landscape (11" x 8.5") sheet.
N Meters
0 45 90 180 270
Feet
0 150 300 E00 900
Map projection: Web Mercator Comereoordinates: WGS84 Edge tics: UTM Zone 17N WGS84
9
Custom Soil Resource Report
Soil Map
741550 741620 741690 741760 741830
741900 741970 742040
M
742110 RR
1 N 36° 5' 13" N
L,
o
401
t r� —
I I 36° 4' 59" N
741830 741900 741970 742040 742110
m
m

MAP LEGEND
Area of Interest (AOI)
0
Area of Interest (AOI)
Soils
0
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special
Point Features
Iwo
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
A.
Lava Flow
.&
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
oa
Sodic Spot
Custom Soil Resource Report
MAP INFORMATION
Spoil Area
The soil surveys that comprise your AOI were mapped at
1:24,000.
Stony Spot
Very Stony Spot
Warning: Soil Map may not be valid at this scale.
Wet Spot
Enlargement of maps beyond the scale of mapping can cause
Other
misunderstanding of the detail of mapping and accuracy of soil
�-
Special Line Features
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
Water Features
scale.
Streams and Canals
Transportation
Please rely on the bar scale on each map sheet for map
--+-*
Rails
measurements.
. 0
Interstate Highways
Source of Map: Natural Resources Conservation Service
US Routes
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Major Roads
Local Roads
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
Background
distance and area. A projection that preserves area, such as the
Aerial Photography
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: Franklin County, North Carolina
Survey Area Data: Version 22, Sep 16, 2019
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: May 25, 2016—Nov
17, 2017
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
WbD
Wake-Wateree-Wedowee
0.1
0.1 %
complex, 8 to 15 percent
slopes, rocky
WeB
Wedowee sandy loam, 2 to 6
11.3
29.3%
percent slopes
WeC
Wedowee sandy loam, 6 to 10
8.6
22.1 %
percent slopes
WeD
Wedowee sandy loam, 10 to 15
0.0
0.0%
percent slopes
WUC
Wedowee -Urban land-
18.7
48.4%
Udorthents complex, 2 to 10
percent slopes
Totals for Area of Interest
38.7
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
11

Custom Soil Resource Report
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
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
Franklin County, North Carolina
MD—Wake-Wateree-Wedowee complex, 8 to 15 percent slopes, rocky
Map Unit Setting
National map unit symbol. 3s60
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 50 to 66 degrees F
Frost -free period: 160 to 240 days
Farmland classification: Not prime farmland
Map Unit Composition
Wake, rocky, and similar soils: 35 percent
Wateree, rocky, and similar soils: 30 percent
Wedowee, rocky, and similar soils: 25 percent
Minor components: 10 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Wake, Rocky
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 granite and gneiss
Typical profile
A - 0 to 7 inches: gravelly loamy coarse sand
C - 7 to 11 inches: gravelly loamy sand
R - 11 to 80 inches: unweathered bedrock
Properties and qualities
Slope: 8 to 15 percent
Depth to restrictive feature: 8 to 20 inches to lithic bedrock
Natural drainage class: Excessively drained
Runoff class: Very high
Capacity of the most limiting layer to transmit water (Ksat): Very low to low (0.00
to 0.01 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water storage in profile: Very low (about 0.7 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 6s
Hydrologic Soil Group: D
Hydric soil rating: No
Description of Wateree, Rocky
Setting
Landform: Hillslopes on ridges
13

Custom Soil Resource Report
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Parent material: Saprolite derived from granite and gneiss
Typical profile
A - 0 to 7 inches: sandy loam
Bw - 7 to 28 inches: sandy loam
C - 28 to 35 inches: sandy loam
Cr - 35 to 80 inches: weathered bedrock
Properties and qualities
Slope: 8 to 15 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock
Natural 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 storage in profile: Low (about 3.4 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: B
Hydric soil rating: No
Description of Wedowee, Rocky
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: Saprolite derived from granite and gneiss and/or schist
Typical profile
Ap - 0 to 5 inches: sandy loam
BE - 5 to 10 inches: sandy clay loam
Bt - 10 to 35 inches: sandy clay
C - 35 to 80 inches: sandy clay loam
Properties and qualities
Slope: 8 to 15 percent
Depth to restrictive feature: More than 80 inches
Natural 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
Frequency of flooding: None
Frequency of ponding: None
Available water storage in profile: Moderate (about 8.2 inches)
14

Custom Soil Resource Report
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Hydric soil rating: No
Minor Components
Rion, rocky
Percent of map unit: 6 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
Wilkes, rocky
Percent of map unit: 3 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
Rock outcrop
Percent of map unit: 1 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
WeB—Wedowee sandy loam, 2 to 6 percent slopes
Map Unit Setting
National map unit symbol: 3s63
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: All areas are prime farmland
Map Unit Composition
Wedowee and similar soils: 94 percent
15

Custom Soil Resource Report
Minor components: 6 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Wedowee
Setting
Landform: Interfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Saprolite derived from granite and gneiss and/or schist
Typical profile
Ap - 0 to 4 inches: sandy loam
E - 4 to 7 inches: sandy loam
Bt - 7 to 23 inches: clay
BC - 23 to 35 inches: clay loam
C - 35 to 80 inches: sandy clay loam
Properties and qualities
Slope: 2 to 6 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well 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: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water storage in profile: Moderate (about 8.1 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Hydric soil rating: No
Minor Components
Vance
Percent of map unit. 5 percent
Landform: Interfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Hydric soil rating: No
Helena
Percent of map unit. 1 percent
Landform: Ridges
Landform position (two-dimensional): Summit, footslope
Landform position (three-dimensional): Interfluve
Down -slope shape: Concave
Across -slope shape: Concave
Hydric soil rating: No
it.

Custom Soil Resource Report
WeC—Wedowee sandy loam, 6 to 10 percent slopes
Map Unit Setting
National map unit symbol: 3s64
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 50 to 66 degrees F
Frost -free period: 160 to 240 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Wedowee and similar soils: 85 percent
Minor components: 14 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Wedowee
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: Saprolite derived from granite and gneiss and/or schist
Typical profile
Ap - 0 to 4 inches: sandy loam
E - 4 to 7 inches: sandy loam
Bt - 7 to 23 inches: clay
BC - 23 to 35 inches: clay loam
C - 35 to 80 inches: sandy clay loam
Properties and qualities
Slope: 6 to 10 percent
Depth to restrictive feature: More than 80 inches
Natural 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
Frequency of flooding: None
Frequency of ponding: None
Available water storage in profile: Moderate (about 8.1 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Hydric soil rating: No
17

Custom Soil Resource Report
Minor Components
Rion
Percent of map unit: 8 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
Vance
Percent of map unit: 5 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
Wateree
Percent of map unit: 1 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
WeD—Wedowee sandy loam, 10 to 15 percent slopes
Map Unit Setting
National map unit symbol: 3s65
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 50 to 66 degrees F
Frost -free period: 160 to 240 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Wedowee and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Wedowee
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
18

Custom Soil Resource Report
Down -slope shape: Linear
Across -slope shape: Convex
Parent material: Saprolite derived from granite and gneiss and/or schist
Typical profile
Ap - 0 to 4 inches: sandy loam
E - 4 to 7 inches: sandy loam
Bt - 7 to 23 inches: clay
BC - 23 to 35 inches: clay loam
C - 35 to 80 inches: sandy clay loam
Properties and qualities
Slope: 10 to 15 percent
Depth to restrictive feature: More than 80 inches
Natural 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
Frequency of flooding: None
Frequency of ponding: None
Available water storage in profile: Moderate (about 8.1 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Hydric soil rating: No
Minor Components
Wateree
Percent of map unit. 6 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
Rion
Percent of map unit. 5 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
Louisburg
Percent of map unit. 4 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
19

Custom Soil Resource Report
MC —Wedowee -Urban land-Udorthents complex, 2 to 10 percent slopes
Map Unit Setting
National map unit symbol: 3s66
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
Wedowee and similar soils: 40 percent
Urban land: 30 percent
Udorthents and similar soils: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Wedowee
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: Saprolite derived from granite and gneiss and/or schist
Typical profile
Ap - 0 to 5 inches: sandy loam
Bt1 - 5 to 10 inches: sandy clay loam
Bt2 - 10 to 35 inches: sandy clay
C - 35 to 80 inches: sandy clay loam
Properties and qualities
Slope: 2 to 10 percent
Depth to restrictive feature: More than 80 inches
Natural 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
Frequency of flooding: None
Frequency of ponding: None
Available water storage in profile: Moderate (about 8.2 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Hydric soil rating: No
20

Custom Soil Resource Report
Description of Urban Land
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: Impervious layers over human transported material
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 8
Hydric soil rating: No
Description of Udorthents
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: Loamy and clayey mine spoil or earthy fill derived from igneous,
metamorphic and sedimentary rock
Typical profile
C - 0 to 80 inches: sandy clay loam
Properties and qualities
Slope: 2 to 10 percent
Depth to restrictive feature: More than 80 inches
Natural 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 storage in profile: Moderate (about 8.4 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 6e
Hydrologic Soil Group: C
Hydric soil rating: No
21

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.
22

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.
23

741480
36° 5' 13" N I.J.
Custom Soil Resource Report
Map —Hydrologic Soil Group
741550 741620 741690 741760 741830 741900 741970 742040
Soil MWmay not he valiel at this scale.
36° 4' 59" N
741480 741550 741620 741690 741760
Map Scale: 1:3,120 if printed on A landscape (11" x 8.5") sheet.
N Meters
0 45 90 180 270
Feet
0 150 300 E00 900
Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 17N WGS84
24
IA:A�J"
M
742110
36° 513" N
401
36° 4'59" N
741830 741900 741970 742040 742110
m
m

MAP LEGEND
Area of Interest (AOI)
0
Area of Interest (AOI)
Soils
Soil Rating
Polygons
0
A
0
A/D
0
B
0
B/D
0
C
0
C/o
0
D
0
Not rated or not available
Soil Rating
Lines
. .
A
.
A/D
r r
B
r 0
B/D
.
C
.
C/o
.
D
.
Not rated or not available
Soil Rating
Points
❑
A
❑
A/D
0
B
0
B/D
Custom Soil Resource Report
❑ C
❑ C/o
0 D
❑ Not rated or not available
Water Features
Streams and Canals
Transportation
i-" Rails
, 0 Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
MAP INFORMATION
The soil surveys that comprise your AOI were mapped at
1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Franklin County, North Carolina
Survey Area Data: Version 22, Sep 16, 2019
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: May 25, 2016—Nov
17, 2017
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.
25

Custom Soil Resource Report
Table —Hydrologic Soil Group
Map unit symbol
Map unit name
Rating
Acres in AOI
Percent of AOI
WbD
Wake-Wateree-
B
0.1
0.1 %
Wedowee complex, 8
to 15 percent slopes,
rocky
WeB
Wedowee sandy loam, 2
B
11.3
29.3%
to 6 percent slopes
WeC
Wedowee sandy loam, 6
B
8.6
22.1 %
to 10 percent slopes
WeD
Wedowee sandy loam,
B
0.0
0.0%
10 to 15 percent
slopes
WUC
Wedowee -Urban land-
B
18.7
48.4%
Udorthents complex, 2
to 10 percent slopes
Totals for Area of Interest
38.7
100.0%
Rating Options —Hydrologic Soil Group
Aggregation Method: Dominant Condition
Component Percent Cutoff.- None Specified
Tie -break Rule: Higher
W

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/
n res/d eta i I/n ati o n a I/s o i Is/?cid = n res 142 p2_0 54262
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.nres.usda.gov/wps/portal/nres/detail/soils/
home/?cid=nres142p2_053374
United States Department of Agriculture, Natural Resources Conservation Service.
National range and pasture handbook. http://www.nres.usda.gov/wps/portal/nres/
detail/national/landuse/rangepastu re/?cid=stelprdb1043084
27

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/
n res/d eta i I/so i Is/scie ntists/?cid=n res 142 p2_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 = n res 142 p2_05 3624
United States Department of Agriculture, Soil Conservation Service. 1961. Land
capability classification. U.S. Department of Agriculture Handbook 210. http:H
www.nrcs.usda.gov/lnternet/FSE—DOCUMENTS/nrcsl 42p2_052290. pdf
28

APPENDIX E
NOAA RAINFALL DATA

IGYPZI `zilykel
Precipitation Frequency Data Server
NOAA Atlas 14, Volume 2, Version 3 LOUISBURG
Station ID: 31-5123
' Location name: Louisburg, North Carolina, USA*AM.,�
Latitude: 36.1028*, Longitude:-78.3039°
Elevation:
Elevation (station metadata): 260 ft**
*source: ESRI Maps
source: USGS
POINT PRECIPITATION FREQUENCY ESTIMATES
G.M. Bonnin, D. Martin, B. Lin, T. Parzybok, M.Yekta, and D. Riley
NOAA, National Weather Service, Silver Spring, Maryland
PF tabular I PF graphical I Maps & aerials
PF tabular
PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1
IDurationl
5-min
Average recurrence interval (years)
000
10
25
50
100
200
500
1000
0.408
(0.373-0.447)
0.472
(0.433-0.516)
0.533
(0.488-0.582)
0.605
(0.552-0.660)
0.673
(0.612-0.734)
0.730
(0.661-0.797)
0.781
(0.702-0.852)
0.826
(0.738-0.904)
0.877
(0.777-0.961)
0.925
(0.813-1.02)
10-min 0.652 0.755 0.854 0.967 1.07 1.16 1.24 1.31 1.39 1.46
(0.596-0.715) (0.692-0.825) (0.782-0.933) (0.883-1.06) 11 (0.975-1.17) 11 (1.05-1.27) (1.12-1.35) (1.17-1.43) (1.23-1.52) (1.28-1.60)
15-min 0.815 0.949 1.08 1.22 1.36 1.47 1.57 1.65 1.75 1.83
(0.745-0.893) (0.870-1.04) (0.989-1.18) 11 (1.12-1.34) 11 (1.24-1.48) (1.33-1.61) (1.41-1.71) (1.48-1.81) 1 (1.61-2.01)
30-min 1.12 1.31 1.54 1.77 2.01 2.22 2.40 2.57 2.78 2.96
(1.02-1.23) 11 (1.20-1.43) (1.41-1.68) 11 (1.62-1.94) 11 (1.83-2.20) (2.01-2.42)1 (2.16-2.62) 1(2.30-2.81)1 (2.46-3.04) (2.60-3.25)
60-min 1.39 1.65 1.97 2.31 2.68 3.01 3.31 3.61 3.99 4.32
(1.27-1.53) 11 (1.51-1.80) 11 (1.80-2.15) 11 (2.11-2.52) 11 (2.44-2.93) 11 (2.72-3.28) 11 (2.98-3.61) 11 (3.22-3.95) 11 (3.53-4.37) (3.80-4.75)
2-hr 1.64 1.94 2.35 2.79 3.29 3.75 4.19 4.64 5.23 5.79
(1.49-1.81) 11 (1.77-2.13) 11 (2.14-2.58) 11 (2.53-3.06) 11 (2.96-3.60) 1(3.36-4.10)1 (3.73-4.58) 11 (4.11-5.07) 11 (4.58-5.73) (5.02-6.35)
3-hr 1.75 2.07 2.51 3.00 3.57 4.10 4.63 5.18 5.91 6.62
(1.58-1.94) 11 (1.88-2.29) 11 (2.28-2.78) 11 (2.71-3.31) 1(3.21-3.93)1 (3.66-4.52) 11 (4.10-5.09) 11 (4.55-5.69) 11 (5.14-6.50) (5.69-7.30)
6-hr 2.09 2.48 3.01 3.60 4.30 4.97 5.63 6.33 7.28 8.20
(1.90-2.32) 11 (2.25-2.74) 11 (2.73-3.33) 11 (3.26-3.97) 11 (3.87-4.74) 1(4.43-5.46)1 (4.98-6.18) 11 (5.55-6.95) 1(6.30-7.99) (6.99-9.01)
4.38 5.23 6.40 7.33 8.61 9.64 10.7 11.8 13.3 14.6
7{iay (4.12-4.67) (4.92-5.57) (6.01-6.81) (6.86-7.80) 11 (8.03-9.17) 11 (8.96-10.3) 11 (9.91-11.4) (10.9-12.6) 11 (12.2-14.3) 1 (13.2-15.7)
10-day 6.00 7 5.95 7 7.19 7 8.16 9.48 10.5 11.6 12.7 14.2 15.4
(4.70-5.31) (5.59-6.32) (6.75-7.62) (7.65-8.65) 11 (8.86-10.1) 11 (9.81-11.2) 11 (10.8-12.4) 1 1(14.1-16.5)1
20-day 6.69 7.91 9.39 10.6 12.2 13.4 14.7 16.0 17.8 19.2
(6.33-7.08) 11 (7.48-8.37) (8.87-9.93) (9.97-11.2) 1 1 (12.6-14.2) 1 1 (14.9-17.0) 11 (16.5-19.0) (17.7-20.5)
30-day 8.30 9.77 11.4 12.7 14.4 15.7 17.0 18.3 20.1 21.4
(7.88-8.75) 11 (9.28-10.3) 11 (10.8-12.0) 11 (12.0-13.4) 1 1 (16.0-18.0) (17.2-19.4) 11 (18.7-21.3) (19.9-22.8)
45-day 10.5 12.3 14.2 15.6 17.5 18.9 20.3 21.7 23.6 25.0
(10.0-11.1) 11 (11.8-13.0) 11 (13.5-14.9) (14.8-16.4) (16.6-18.4) (17.9-19.9) (19.2-21.4) 1 (22.1-24.9) (23.3-26.5)
47
60-day (12 1213.2) (14 1415.4) (1610-1$ .5) (1714-19.1) (192021.2) (20.7-282.8) (22?0-24.4) (23?3-25.9) (25?0-27.9) (26?3-29.5)
1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS).
Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for a
given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not
checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values.
Please refer to NOAA Atlas 14 document for more information.
Back to Top
PF graphical
https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?st=nc&sta=31-5123&data=depth&units=english&series=pds 1 /4

APPENDIX F
PRE -DEVELOPMENT WATERSHED MAP

/ /
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OWNER: SCHAAF ROBERT
EDMUND
PIN: 2805-21-2007
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OWNER: JEFFREYS \
RENTALS LLC \ I
PIN: 2805-10-9548 \
/
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SUBCATCHMENT1S
(PRE -DEVELOPMENT DA-1)
DRAINAGE AREA = 2.50 AC
SUBCATCHMENT1S
/ (PRE -DEVELOPMENT DA-1) TIME
\ OF CONCENTRATION FLOW PATH
/
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SS 16P
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SUBCATCHMENT 2S
(PRE -DEVELOPMENT DA-2)
MMAIKIAnM AMMA =A 13AC
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SUBCATCHMENT 2S cl
(PRE -DEVELOPMENT DA-2) TIME
OF CONCENTRATION FLOW PATH
LEGEND
EX. PROPERTY LINE
EX. SUBDIVISION LINE
EX. RIGHT-OF-WAY
EX. ADJACENT OWNERS
EX. WATER LINE
EX. SANITARY SEWER
EX. STORM SEWER
300 EX. MAJOR CONTOUR (5)
EX. MINOR CONTOUR (1)
PRE -DEVELOPMENT DRAINAGE BOUNDARY
If
PRE -DEVELOPMENT FLOW SEGMENT
\ \ \ \ GRASS COVER, HSG B
\ \ \ IMPERVIOUS COVER
SS \
ENGINEERING
POST OFFICE BOX 91727
RALEIGH, NORTH CAROLINA 27675
PHONE: [phone]
FIRM NC LICENSE NUMBER C-4222
REVISION HISTORY
REV DESCRIPTION DATE BY
ORIGINAL PLAN SIZE: 24" X 36"
30 15 0 30
SCALE: 1 INCH = 30 FEET
N SCALE ADJUSTMENT
THIS BAR IS 1 INCH IN LENGTH
ON ORIGINAL DRAWING
0 1i'
IF IT IS NOT 1 INCH ON THIS
SHEET, ADJUST YOUR SCALE
ACCORDINGLY
EXHIBIT
MOSS BUILDINGS
1075 S MAIN ST
LOUISBURG, NC 27549
MOSS RENTALS, LLC
DATE: 03-25-2020
SCALE: AS SHOWN
DESIGNED BY: FLM
APPROVED BY: FLM
PROJECT NO.: 19060
PRE -DEVELOPMENT
WATERSHED MAP
SHEET 1 OF 1
© 2020 THIS DRAWING SHALL NOT BE REPRODUCED IN WHOLE OR IN
PART WITHOUT WRITTEN PERMISSION OF FLM ENGINEERING, INC.

APPENDIX G
PRE -DEVELOPMENT HYDROLOGIC MODEL

Ois
Pre-development DA-1
Subcat Reach on Link
i
S
Pre -development DA-2

Moss Buildings Stormwater Model
Prepared by FLM Engineering, Inc. Printed 3/26/2020
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 2
Area Listing (selected nodes)
Area CN Description
(acres) (su bcatch me nt-n u mbe rs)
5.570 69 50-75% Grass cover, Fair, HSG B (1 S,2S)
0.707 98 Paved parking & roofs (1 S,2S)
0.353 98 Water Surface, 0% imp (1S)
6.630 TOTAL AREA

Moss Buildings Stormwater Model Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 3/26/2020
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 3
Summary for Subcatchment 1S: Pre -development DA-1
Runoff = 2.92 cfs @ 12.04 hrs, Volume= 0.176 af, Depth= 0.85"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 1-Year Rainfall=2.90"
Area (ac) CN Description
0.083
98
Paved parking & roofs
0.353
98
Water Surface, 0% imp
2.060
69
50-75% Grass cover, Fair, HSG B
2.496
74
Weighted Average
2.413
Pervious Area
0.083
Impervious Area
Tc
Length
Slope
Velocity
Capacity Description
(min)
(feet)
(ft/ft)
(ft/sec)
(cfs)
8.2
63
0.0800
0.13
Sheet Flow, Sheet Flow
Woods: Light underbrush n= 0.400 P2= 3.46"
0.6
203
0.1230
5.65
Shallow Concentrated Flow, Shallow Concentrated Flow
Unpaved Kv= 16.1 fps
0.8
100
0.0500
2.06
Sheet Flow, Sheet Flow
Smooth surfaces n= 0.011 P2= 3.46"
1.8
325
0.0340
2.97
Shallow Concentrated Flow, Shallow Concentrated Flow
Unpaved Kv= 16.1 fps
11.4 691 Total
Subcatchment 1S: Pre -development DA-1
Hydrograph
--+-- I+--I+--I�--+--+--+--+-- I+--I+--I�---I�---I�--+-- I+--+--+--�--+-- ■Runoff
2192 cfs
3 TOO II 24-h'Ir 1'I-Year
RainfaillT2.90';"
�RWnbffl Area=2.496 at
2 ---I-- -- IRLInOffIVQ��m -
e r0.�17 of
Runoff IDept&1�0.6511"
3 Flbw Len th=691'
° 9
LL I I I I I I I I I I I I I I
III-- -III--;--�--! -- ;--�--! --! -- 7Tc=11-4MII"
1 4N=74
0 ,.
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Moss Buildings Stormwater Model Type // 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 3/26/2020
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 4
Hydrograph for Subcatchment 1S: Pre -development DA-1
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.08
0.00
0.00
5.00
0.18
0.00
0.00
7.50
0.32
0.00
0.00
10.00
0.52
0.00
0.00
12.50
2.13
0.41
0.46
15.00
2.48
0.59
0.13
17.50
2.64
0.69
0.08
20.00
2.76
0.76
0.06
22.50
2.85
0.81
0.05
25.00
2.90
0.85
0.00
27.50
2.90
0.85
0.00
30.00
2.90
0.85
0.00
32.50
2.90
0.85
0.00
35.00
2.90
0.85
0.00
37.50
2.90
0.85
0.00
40.00
2.90
0.85
0.00
42.50
2.90
0.85
0.00
45.00
2.90
0.85
0.00
47.50
2.90
0.85
0.00
50.00
2.90
0.85
0.00
52.50
2.90
0.85
0.00
55.00
2.90
0.85
0.00
57.50
2.90
0.85
0.00
60.00
2.90
0.85
0.00
62.50
2.90
0.85
0.00
65.00
2.90
0.85
0.00
67.50
2.90
0.85
0.00
70.00
2.90
0.85
0.00
72.50
2.90
0.85
0.00
75.00
2.90
0.85
0.00
77.50
2.90
0.85
0.00
80.00
2.90
0.85
0.00
82.50
2.90
0.85
0.00
85.00
2.90
0.85
0.00
87.50
2.90
0.85
0.00
90.00
2.90
0.85
0.00
92.50
2.90
0.85
0.00
95.00
2.90
0.85
0.00
97.50
2.90
0.85
0.00
100.00
2.90
0.85
0.00
102.50
2.90
0.85
0.00
105.00
2.90
0.85
0.00
107.50
2.90
0.85
0.00
110.00
2.90
0.85
0.00
112.50
2.90
0.85
0.00
115.00
2.90
0.85
0.00
117.50
2.90
0.85
0.00
120.00
2.90
0.85
0.00

Moss Buildings Stormwater Model Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 3/26/2020
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 5
Summary for Subcatchment 2S: Pre -development DA-2
Runoff = 5.58 cfs @ 11.98 hrs, Volume= 0.274 af, Depth= 0.80"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 1-Year Rainfall=2.90"
Area (ac) CN Description
0.624
98 Paved parking & roofs
3.510
69 50-75% Grass cover, Fair, HSG B
4.134
73 Weighted Average
3.510
Pervious Area
0.624
Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
6.0 Direct Entry,
Subcatchment 2S: Pre -development DA-2
Hydrograph
6 1■Runoff
5.58 cfs
'
5 RainfailIT2.90';��
Rgnbff Awe&4A34 at
---- -- ------------ -- -- -- ------------ -- ------------
4-
RLInpff''VQILjme=0.�74 elf
Ru��rvoff Depth=-0.80
3 TcT6.0 Mid
z 'I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Moss Buildings Stormwater Model Type // 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 3/26/2020
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 6
Hydrograph for Subcatchment 2S: Pre -development DA-2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.08
0.00
0.00
5.00
0.18
0.00
0.00
7.50
0.32
0.00
0.00
10.00
0.52
0.00
0.00
12.50
2.13
0.38
0.61
15.00
2.48
0.55
0.20
17.50
2.64
0.65
0.13
20.00
2.76
0.71
0.09
22.50
2.85
0.77
0.08
25.00
2.90
0.80
0.00
27.50
2.90
0.80
0.00
30.00
2.90
0.80
0.00
32.50
2.90
0.80
0.00
35.00
2.90
0.80
0.00
37.50
2.90
0.80
0.00
40.00
2.90
0.80
0.00
42.50
2.90
0.80
0.00
45.00
2.90
0.80
0.00
47.50
2.90
0.80
0.00
50.00
2.90
0.80
0.00
52.50
2.90
0.80
0.00
55.00
2.90
0.80
0.00
57.50
2.90
0.80
0.00
60.00
2.90
0.80
0.00
62.50
2.90
0.80
0.00
65.00
2.90
0.80
0.00
67.50
2.90
0.80
0.00
70.00
2.90
0.80
0.00
72.50
2.90
0.80
0.00
75.00
2.90
0.80
0.00
77.50
2.90
0.80
0.00
80.00
2.90
0.80
0.00
82.50
2.90
0.80
0.00
85.00
2.90
0.80
0.00
87.50
2.90
0.80
0.00
90.00
2.90
0.80
0.00
92.50
2.90
0.80
0.00
95.00
2.90
0.80
0.00
97.50
2.90
0.80
0.00
100.00
2.90
0.80
0.00
102.50
2.90
0.80
0.00
105.00
2.90
0.80
0.00
107.50
2.90
0.80
0.00
110.00
2.90
0.80
0.00
112.50
2.90
0.80
0.00
115.00
2.90
0.80
0.00
117.50
2.90
0.80
0.00
120.00
2.90
0.80
0.00

APPENDIX H
POST -DEVELOPMENT WATERSHED MAP

/vC f w �--
VARIA&4S w y 56
J
s
— 7�7
ss
-
_ �).c
PROP. RETAINING WALL GUARDRAIL
PROP. ADA HANDRAIL
PROP. STORM SEWER
PROP. MAJOR CONTOUR (5')
PROP. MINOR CONTOUR (1)
POST -DEVELOPMENT DRAINAGE BOUNDARY
GRASS COVER, HSG B
IMPERVIOUS COVER
L.M
ENGINEERING
POST OFFICE BOX 91727
RALEIGH, NORTH CAROLINA 27675
PHONE: [phone]
FIRM NC LICENSE NUMBER C-4222
I REVISION HISTORY I
REV DESCRIPTION DATE BY
ORIGINAL PLAN SIZE: 24" X 36"
30 15 0 30
SCALE: 1 INCH = 30 FEET
N SCALE ADJUSTMENT
THIS BAR IS 1 INCH IN LENGTH
ON ORIGINAL DRAWING
0 1"
I I
IF IT IS NOT 1 INCH ON THIS
SHEET, ADJUST YOUR SCALE
ACCORDINGLY
EXHIBIT
MOSS BUILDINGS
1075 S MAIN ST
LOUISBURG, NC 27549
MOSS RENTALS, LLC
DATE:
08-09-2021
SCALE:
AS SHOWN
DESIGNED BY:
FLM
APPROVED BY:
FLM
PROJECT NO.:
19060
POST -DEVELOPMENT
WATERSHED MAP
SHEET 1 OF 1
© 2021 THIS DRAWING SHALL NOT BE REPRODUCED IN WHOLE OR IN
PART WITHOUT WRITTEN PERMISSION OF FLM ENGINEERING, INC.

APPENDIX I
POST -DEVELOPMENT HYDROLOGIC MODEL

(3S
Post-deve opment to
SCM A-1A
4ip�
WETL ND
Ni47
4S
Po t-development
Bypass DA-1 B
Post -development DA-1
Subcat Reach on Link
(5S
Post -development DA-2

Moss Buildings Stormwater Model —Rev
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 2
Area Listing (selected nodes)
Area CN Description
(acres) (su bcatch me nt-n u mbe rs)
3.210 69 50-75% Grass cover, Fair, HSG B (3S,4S,5S)
0.690 98 Paved parking & roofs, Offsite (4S,5S)
2.730 98 Paved parking & roofs, Onsite (3S,5S)
6.630 TOTAL AREA

Moss Buildings Stormwater Model —Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 3
Summary for Subcatchment 3S: Post -development to SCM DA-1A
Runoff = 11.57 cfs @ 11.97 hrs, Volume= 0.570 af, Depth= 1.81"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 1-Year Rainfall=2.90"
Area (ac) CN Description
2.660 98 Paved parking & roofs, Onsite
1.120 69 50-75% Grass cover, Fair, HSG B
3.780 89 Weighted Average
1.120 Pervious Area
2.660 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
6.0 Direct Entry,
Subcatchment 3S: Post -development to SCM DA-1A
Hydrograph
I I I I-- �'I--II I I I I I I I I I I I I I I I I --I--- ■Runoff
1211.57 cfs
---- Yypp-1f;24=h;r4l-Year-
11
----
10 --I----,--I, --I, --I, - - -------- TI-- TI--TI--' --'---RainfalrTZ.90.F-
----
9 Runbff Awela=3.780 at
Runpffl Vplam'1e=10.$70 elf
7 __' - -- -- - - -- -- -- ----Runoff'IDepth=l.81��"--
0 6 Tc= r 0 Min_-
LL
i 5 -- -- --N Q
T --T------------- -- -- --T --T---------- -�N=8$ -
4
I I I I I
3
---- --- T-- T -- T
2
--I------1--7- T--r T-- ----T--T--F-- T-- T --T--F
1 I I I I I I I I I I I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 4
Hydrograph for Subcatchment 3S: Post -development to SCM DA-1A
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
0.25
0.01
0.00
0.00
0.50
0.01
0.00
0.00
0.75
0.02
0.00
0.00
1.00
0.03
0.00
0.00
1.25
0.04
0.00
0.00
1.50
0.05
0.00
0.00
1.75
0.06
0.00
0.00
2.00
0.06
0.00
0.00
2.25
0.07
0.00
0.00
2.50
0.08
0.00
0.00
2.75
0.09
0.00
0.00
3.00
0.10
0.00
0.00
3.25
0.11
0.00
0.00
3.50
0.12
0.00
0.00
3.75
0.13
0.00
0.00
4.00
0.14
0.00
0.00
4.25
0.15
0.00
0.00
4.50
0.16
0.00
0.00
4.75
0.17
0.00
0.00
5.00
0.18
0.00
0.00
5.25
0.19
0.00
0.00
5.50
0.21
0.00
0.00
5.75
0.22
0.00
0.00
6.00
0.23
0.00
0.00
6.25
0.25
0.00
0.00
6.50
0.26
0.00
0.00
6.75
0.27
0.00
0.01
7.00
0.29
0.00
0.01
7.25
0.30
0.00
0.02
7.50
0.32
0.00
0.02
7.75
0.33
0.01
0.03
8.00
0.35
0.01
0.03
8.25
0.36
0.01
0.04
8.50
0.38
0.01
0.05
8.75
0.40
0.02
0.06
9.00
0.43
0.02
0.08
9.25
0.45
0.03
0.09
9.50
0.47
0.03
0.10
9.75
0.50
0.04
0.11
10.00
0.52
0.05
0.14
10.25
0.56
0.06
0.17
10.50
0.59
0.08
0.21
10.75
0.63
0.09
0.26
11.00
0.68
0.11
0.33
11.25
0.74
0.14
0.46
11.50
0.82
0.18
0.64
11.75
1.12
0.36
3.30
12.00
1.92
0.96
10.95
12.25
2.05
1.07
1.55
12.50
2.13
1.14
1.00
12.75
2.19
1.19
0.74
13.00
2.24
1.23
0.62
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
13.25
2.28
1.26
0.54
13.50
2.32
1.30
0.47
13.75
2.35
1.32
0.42
14.00
2.38
1.35
0.37
14.25
2.40
1.37
0.34
14.50
2.43
1.39
0.33
14.75
2.45
1.41
0.31
15.00
2.48
1.43
0.30
15.25
2.50
1.45
0.28
15.50
2.52
1.47
0.26
15.75
2.53
1.49
0.25
16.00
2.55
1.50
0.23
16.25
2.57
1.51
0.22
16.50
2.58
1.53
0.21
16.75
2.60
1.54
0.21
17.00
2.62
1.56
0.20
17.25
2.63
1.57
0.20
17.50
2.64
1.58
0.19
17.75
2.66
1.59
0.18
18.00
2.67
1.61
0.18
18.25
2.68
1.62
0.17
18.50
2.70
1.63
0.17
18.75
2.71
1.64
0.16
19.00
2.72
1.65
0.15
19.25
2.73
1.66
0.15
19.50
2.74
1.67
0.14
19.75
2.75
1.68
0.14
20.00
2.76
1.69
0.13
20.25
2.77
1.69
0.13
20.50
2.78
1.70
0.13
20.75
2.79
1.71
0.13
21.00
2.80
1.72
0.12
21.25
2.81
1.73
0.12
21.50
2.82
1.73
0.12
21.75
2.82
1.74
0.12
22.00
2.83
1.75
0.12
22.25
2.84
1.76
0.12
22.50
2.85
1.77
0.12
22.75
2.86
1.77
0.12
23.00
2.87
1.78
0.11
23.25
2.88
1.79
0.11
23.50
2.88
1.80
0.11
23.75
2.89
1.80
0.11
24.00
2.90
1.81
0.11
24.25
2.90
1.81
0.00
24.50
2.90
1.81
0.00
24.75
2.90
1.81
0.00
25.00
2.90
1.81
0.00
25.25
2.90
1.81
0.00
25.50
2.90
1.81
0.00
25.75
2.90
1.81
0.00
26.00
2.90
1.81
0.00
26.25
2.90
1.81
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 5
Hydrograph for Subcatchment 3S: Post -development to SCM DA-1A (continued)
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
26.50
2.90
1.81
0.00
26.75
2.90
1.81
0.00
27.00
2.90
1.81
0.00
27.25
2.90
1.81
0.00
27.50
2.90
1.81
0.00
27.75
2.90
1.81
0.00
28.00
2.90
1.81
0.00
28.25
2.90
1.81
0.00
28.50
2.90
1.81
0.00
28.75
2.90
1.81
0.00
29.00
2.90
1.81
0.00
29.25
2.90
1.81
0.00
29.50
2.90
1.81
0.00
29.75
2.90
1.81
0.00
30.00
2.90
1.81
0.00
30.25
2.90
1.81
0.00
30.50
2.90
1.81
0.00
30.75
2.90
1.81
0.00
31.00
2.90
1.81
0.00
31.25
2.90
1.81
0.00
31.50
2.90
1.81
0.00
31.75
2.90
1.81
0.00
32.00
2.90
1.81
0.00
32.25
2.90
1.81
0.00
32.50
2.90
1.81
0.00
32.75
2.90
1.81
0.00
33.00
2.90
1.81
0.00
33.25
2.90
1.81
0.00
33.50
2.90
1.81
0.00
33.75
2.90
1.81
0.00
34.00
2.90
1.81
0.00
34.25
2.90
1.81
0.00
34.50
2.90
1.81
0.00
34.75
2.90
1.81
0.00
35.00
2.90
1.81
0.00
35.25
2.90
1.81
0.00
35.50
2.90
1.81
0.00
35.75
2.90
1.81
0.00
36.00
2.90
1.81
0.00
36.25
2.90
1.81
0.00
36.50
2.90
1.81
0.00
36.75
2.90
1.81
0.00
37.00
2.90
1.81
0.00
37.25
2.90
1.81
0.00
37.50
2.90
1.81
0.00
37.75
2.90
1.81
0.00
38.00
2.90
1.81
0.00
38.25
2.90
1.81
0.00
38.50
2.90
1.81
0.00
38.75
2.90
1.81
0.00
39.00
2.90
1.81
0.00
39.25
2.90
1.81
0.00
39.50
2.90
1.81
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
39.75
2.90
1.81
0.00
40.00
2.90
1.81
0.00
40.25
2.90
1.81
0.00
40.50
2.90
1.81
0.00
40.75
2.90
1.81
0.00
41.00
2.90
1.81
0.00
41.25
2.90
1.81
0.00
41.50
2.90
1.81
0.00
41.75
2.90
1.81
0.00
42.00
2.90
1.81
0.00
42.25
2.90
1.81
0.00
42.50
2.90
1.81
0.00
42.75
2.90
1.81
0.00
43.00
2.90
1.81
0.00
43.25
2.90
1.81
0.00
43.50
2.90
1.81
0.00
43.75
2.90
1.81
0.00
44.00
2.90
1.81
0.00
44.25
2.90
1.81
0.00
44.50
2.90
1.81
0.00
44.75
2.90
1.81
0.00
45.00
2.90
1.81
0.00
45.25
2.90
1.81
0.00
45.50
2.90
1.81
0.00
45.75
2.90
1.81
0.00
46.00
2.90
1.81
0.00
46.25
2.90
1.81
0.00
46.50
2.90
1.81
0.00
46.75
2.90
1.81
0.00
47.00
2.90
1.81
0.00
47.25
2.90
1.81
0.00
47.50
2.90
1.81
0.00
47.75
2.90
1.81
0.00
48.00
2.90
1.81
0.00
48.25
2.90
1.81
0.00
48.50
2.90
1.81
0.00
48.75
2.90
1.81
0.00
49.00
2.90
1.81
0.00
49.25
2.90
1.81
0.00
49.50
2.90
1.81
0.00
49.75
2.90
1.81
0.00
50.00
2.90
1.81
0.00
50.25
2.90
1.81
0.00
50.50
2.90
1.81
0.00
50.75
2.90
1.81
0.00
51.00
2.90
1.81
0.00
51.25
2.90
1.81
0.00
51.50
2.90
1.81
0.00
51.75
2.90
1.81
0.00
52.00
2.90
1.81
0.00
52.25
2.90
1.81
0.00
52.50
2.90
1.81
0.00
52.75
2.90
1.81
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 6
Hydrograph for Subcatchment 3S: Post -development to SCM DA-1A (continued)
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
2.90
1.81
0.00
53.25
2.90
1.81
0.00
53.50
2.90
1.81
0.00
53.75
2.90
1.81
0.00
54.00
2.90
1.81
0.00
54.25
2.90
1.81
0.00
54.50
2.90
1.81
0.00
54.75
2.90
1.81
0.00
55.00
2.90
1.81
0.00
55.25
2.90
1.81
0.00
55.50
2.90
1.81
0.00
55.75
2.90
1.81
0.00
56.00
2.90
1.81
0.00
56.25
2.90
1.81
0.00
56.50
2.90
1.81
0.00
56.75
2.90
1.81
0.00
57.00
2.90
1.81
0.00
57.25
2.90
1.81
0.00
57.50
2.90
1.81
0.00
57.75
2.90
1.81
0.00
58.00
2.90
1.81
0.00
58.25
2.90
1.81
0.00
58.50
2.90
1.81
0.00
58.75
2.90
1.81
0.00
59.00
2.90
1.81
0.00
59.25
2.90
1.81
0.00
59.50
2.90
1.81
0.00
59.75
2.90
1.81
0.00
60.00
2.90
1.81
0.00
60.25
2.90
1.81
0.00
60.50
2.90
1.81
0.00
60.75
2.90
1.81
0.00
61.00
2.90
1.81
0.00
61.25
2.90
1.81
0.00
61.50
2.90
1.81
0.00
61.75
2.90
1.81
0.00
62.00
2.90
1.81
0.00
62.25
2.90
1.81
0.00
62.50
2.90
1.81
0.00
62.75
2.90
1.81
0.00
63.00
2.90
1.81
0.00
63.25
2.90
1.81
0.00
63.50
2.90
1.81
0.00
63.75
2.90
1.81
0.00
64.00
2.90
1.81
0.00
64.25
2.90
1.81
0.00
64.50
2.90
1.81
0.00
64.75
2.90
1.81
0.00
65.00
2.90
1.81
0.00
65.25
2.90
1.81
0.00
65.50
2.90
1.81
0.00
65.75
2.90
1.81
0.00
66.00
2.90
1.81
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
66.25
2.90
1.81
0.00
66.50
2.90
1.81
0.00
66.75
2.90
1.81
0.00
67.00
2.90
1.81
0.00
67.25
2.90
1.81
0.00
67.50
2.90
1.81
0.00
67.75
2.90
1.81
0.00
68.00
2.90
1.81
0.00
68.25
2.90
1.81
0.00
68.50
2.90
1.81
0.00
68.75
2.90
1.81
0.00
69.00
2.90
1.81
0.00
69.25
2.90
1.81
0.00
69.50
2.90
1.81
0.00
69.75
2.90
1.81
0.00
70.00
2.90
1.81
0.00
70.25
2.90
1.81
0.00
70.50
2.90
1.81
0.00
70.75
2.90
1.81
0.00
71.00
2.90
1.81
0.00
71.25
2.90
1.81
0.00
71.50
2.90
1.81
0.00
71.75
2.90
1.81
0.00
72.00
2.90
1.81
0.00
72.25
2.90
1.81
0.00
72.50
2.90
1.81
0.00
72.75
2.90
1.81
0.00
73.00
2.90
1.81
0.00
73.25
2.90
1.81
0.00
73.50
2.90
1.81
0.00
73.75
2.90
1.81
0.00
74.00
2.90
1.81
0.00
74.25
2.90
1.81
0.00
74.50
2.90
1.81
0.00
74.75
2.90
1.81
0.00
75.00
2.90
1.81
0.00
75.25
2.90
1.81
0.00
75.50
2.90
1.81
0.00
75.75
2.90
1.81
0.00
76.00
2.90
1.81
0.00
76.25
2.90
1.81
0.00
76.50
2.90
1.81
0.00
76.75
2.90
1.81
0.00
77.00
2.90
1.81
0.00
77.25
2.90
1.81
0.00
77.50
2.90
1.81
0.00
77.75
2.90
1.81
0.00
78.00
2.90
1.81
0.00
78.25
2.90
1.81
0.00
78.50
2.90
1.81
0.00
78.75
2.90
1.81
0.00
79.00
2.90
1.81
0.00
79.25
2.90
1.81
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 7
Hydrograph for Subcatchment 3S: Post -development to SCM DA-1A (continued)
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
79.50
2.90
1.81
0.00
79.75
2.90
1.81
0.00
80.00
2.90
1.81
0.00
80.25
2.90
1.81
0.00
80.50
2.90
1.81
0.00
80.75
2.90
1.81
0.00
81.00
2.90
1.81
0.00
81.25
2.90
1.81
0.00
81.50
2.90
1.81
0.00
81.75
2.90
1.81
0.00
82.00
2.90
1.81
0.00
82.25
2.90
1.81
0.00
82.50
2.90
1.81
0.00
82.75
2.90
1.81
0.00
83.00
2.90
1.81
0.00
83.25
2.90
1.81
0.00
83.50
2.90
1.81
0.00
83.75
2.90
1.81
0.00
84.00
2.90
1.81
0.00
84.25
2.90
1.81
0.00
84.50
2.90
1.81
0.00
84.75
2.90
1.81
0.00
85.00
2.90
1.81
0.00
85.25
2.90
1.81
0.00
85.50
2.90
1.81
0.00
85.75
2.90
1.81
0.00
86.00
2.90
1.81
0.00
86.25
2.90
1.81
0.00
86.50
2.90
1.81
0.00
86.75
2.90
1.81
0.00
87.00
2.90
1.81
0.00
87.25
2.90
1.81
0.00
87.50
2.90
1.81
0.00
87.75
2.90
1.81
0.00
88.00
2.90
1.81
0.00
88.25
2.90
1.81
0.00
88.50
2.90
1.81
0.00
88.75
2.90
1.81
0.00
89.00
2.90
1.81
0.00
89.25
2.90
1.81
0.00
89.50
2.90
1.81
0.00
89.75
2.90
1.81
0.00
90.00
2.90
1.81
0.00
90.25
2.90
1.81
0.00
90.50
2.90
1.81
0.00
90.75
2.90
1.81
0.00
91.00
2.90
1.81
0.00
91.25
2.90
1.81
0.00
91.50
2.90
1.81
0.00
91.75
2.90
1.81
0.00
92.00
2.90
1.81
0.00
92.25
2.90
1.81
0.00
92.50
2.90
1.81
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
92.75
2.90
1.81
0.00
93.00
2.90
1.81
0.00
93.25
2.90
1.81
0.00
93.50
2.90
1.81
0.00
93.75
2.90
1.81
0.00
94.00
2.90
1.81
0.00
94.25
2.90
1.81
0.00
94.50
2.90
1.81
0.00
94.75
2.90
1.81
0.00
95.00
2.90
1.81
0.00
95.25
2.90
1.81
0.00
95.50
2.90
1.81
0.00
95.75
2.90
1.81
0.00
96.00
2.90
1.81
0.00
96.25
2.90
1.81
0.00
96.50
2.90
1.81
0.00
96.75
2.90
1.81
0.00
97.00
2.90
1.81
0.00
97.25
2.90
1.81
0.00
97.50
2.90
1.81
0.00
97.75
2.90
1.81
0.00
98.00
2.90
1.81
0.00
98.25
2.90
1.81
0.00
98.50
2.90
1.81
0.00
98.75
2.90
1.81
0.00
99.00
2.90
1.81
0.00
99.25
2.90
1.81
0.00
99.50
2.90
1.81
0.00
99.75
2.90
1.81
0.00
100.00
2.90
1.81
0.00
100.25
2.90
1.81
0.00
100.50
2.90
1.81
0.00
100.75
2.90
1.81
0.00
101.00
2.90
1.81
0.00
101.25
2.90
1.81
0.00
101.50
2.90
1.81
0.00
101.75
2.90
1.81
0.00
102.00
2.90
1.81
0.00
102.25
2.90
1.81
0.00
102.50
2.90
1.81
0.00
102.75
2.90
1.81
0.00
103.00
2.90
1.81
0.00
103.25
2.90
1.81
0.00
103.50
2.90
1.81
0.00
103.75
2.90
1.81
0.00
104.00
2.90
1.81
0.00
104.25
2.90
1.81
0.00
104.50
2.90
1.81
0.00
104.75
2.90
1.81
0.00
105.00
2.90
1.81
0.00
105.25
2.90
1.81
0.00
105.50
2.90
1.81
0.00
105.75
2.90
1.81
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 8
Hydrograph for Subcatchment 3S: Post -development to SCM DA-1A (continued)
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
106.00
2.90
1.81
0.00
106.25
2.90
1.81
0.00
106.50
2.90
1.81
0.00
106.75
2.90
1.81
0.00
107.00
2.90
1.81
0.00
107.25
2.90
1.81
0.00
107.50
2.90
1.81
0.00
107.75
2.90
1.81
0.00
108.00
2.90
1.81
0.00
108.25
2.90
1.81
0.00
108.50
2.90
1.81
0.00
108.75
2.90
1.81
0.00
109.00
2.90
1.81
0.00
109.25
2.90
1.81
0.00
109.50
2.90
1.81
0.00
109.75
2.90
1.81
0.00
110.00
2.90
1.81
0.00
110.25
2.90
1.81
0.00
110.50
2.90
1.81
0.00
110.75
2.90
1.81
0.00
111.00
2.90
1.81
0.00
111.25
2.90
1.81
0.00
111.50
2.90
1.81
0.00
111.75
2.90
1.81
0.00
112.00
2.90
1.81
0.00
112.25
2.90
1.81
0.00
112.50
2.90
1.81
0.00
112.75
2.90
1.81
0.00
113.00
2.90
1.81
0.00
113.25
2.90
1.81
0.00
113.50
2.90
1.81
0.00
113.75
2.90
1.81
0.00
114.00
2.90
1.81
0.00
114.25
2.90
1.81
0.00
114.50
2.90
1.81
0.00
114.75
2.90
1.81
0.00
115.00
2.90
1.81
0.00
115.25
2.90
1.81
0.00
115.50
2.90
1.81
0.00
115.75
2.90
1.81
0.00
116.00
2.90
1.81
0.00
116.25
2.90
1.81
0.00
116.50
2.90
1.81
0.00
116.75
2.90
1.81
0.00
117.00
2.90
1.81
0.00
117.25
2.90
1.81
0.00
117.50
2.90
1.81
0.00
117.75
2.90
1.81
0.00
118.00
2.90
1.81
0.00
118.25
2.90
1.81
0.00
118.50
2.90
1.81
0.00
118.75
2.90
1.81
0.00
119.00
2.90
1.81
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
119.25
2.90
1.81
0.00
119.50
2.90
1.81
0.00
119.75
2.90
1.81
0.00
120.00
2.90
1.81
0.00

Moss Buildings Stormwater Model —Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 9
Summary for Subcatchment 4S: Post -development Bypass DA-1 B
Runoff = 0.70 cfs @ 11.98 hrs, Volume= 0.035 af, Depth= 0.75"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 1-Year Rainfall=2.90"
Area (ac) CN Description
0.510 69 50-75% Grass cover, Fair, HSG B
0.050 98 Paved parking & roofs, Offsite
0.560 72 Weighted Average
0.510 Pervious Area
0.050 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
6.0 Direct Entry,
Subcatchment 4S: Post -development Bypass DA-1 B
Hydrograph
-----I-- - - --I--
0.750.70 Cfs
-1--L--1-----J--1--1--L--1---'-- --1--L--1--------1--1--L--1--
0.7 i-
---- ' ype; u-1241-hr '�Yelar-
0.65 1
0.6 I I I I 1
---- ------------------------------------------------------------
0.55 ' Raindff''A�e�=0.- at
--r- - ----r--r--r- ----+--r--r------�--r--r--r--i=0,5 -0 at
0.5
-------------------------------� n4ff-VQJOMq=0.03$_Cj#
w 0.45 Ru off -Depth 4-.75"-
--II---r--r--r-------r--r--t--r-----
1--r-- 1 1
3 0.4 --i - --- --i --i-----i-- -- --i --i--i---- -- --i --i- - - -
�° 0.35 1 c=i 6. 0 M i d
--r- -r--r--r--r--r-r--r--r--r--r--i--r--r--r--r--r--i--r--r--r--r-
0.3 ww''
-----------!----------! --!----------!--! --!--------'-- N=,
0.25
--r- -r--r--r--r--r-r--r--t--r--r--i--r--r--r--r--r--i--r--t--r--r-
0.2 --'-- ---1--L----'------L--r--'-------1--L-----------L--r--'--
0.15
--I - 7--7--r--I------7--T--r--I----7--7--r--I -------7--T--r--I--
0.1
0.05 1 1 1
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)
■ Runoff

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 10
Hydrograph for Subcatchment 4S: Post -development Bypass DA-1 B
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
0.25
0.01
0.00
0.00
0.50
0.01
0.00
0.00
0.75
0.02
0.00
0.00
1.00
0.03
0.00
0.00
1.25
0.04
0.00
0.00
1.50
0.05
0.00
0.00
1.75
0.06
0.00
0.00
2.00
0.06
0.00
0.00
2.25
0.07
0.00
0.00
2.50
0.08
0.00
0.00
2.75
0.09
0.00
0.00
3.00
0.10
0.00
0.00
3.25
0.11
0.00
0.00
3.50
0.12
0.00
0.00
3.75
0.13
0.00
0.00
4.00
0.14
0.00
0.00
4.25
0.15
0.00
0.00
4.50
0.16
0.00
0.00
4.75
0.17
0.00
0.00
5.00
0.18
0.00
0.00
5.25
0.19
0.00
0.00
5.50
0.21
0.00
0.00
5.75
0.22
0.00
0.00
6.00
0.23
0.00
0.00
6.25
0.25
0.00
0.00
6.50
0.26
0.00
0.00
6.75
0.27
0.00
0.00
7.00
0.29
0.00
0.00
7.25
0.30
0.00
0.00
7.50
0.32
0.00
0.00
7.75
0.33
0.00
0.00
8.00
0.35
0.00
0.00
8.25
0.36
0.00
0.00
8.50
0.38
0.00
0.00
8.75
0.40
0.00
0.00
9.00
0.43
0.00
0.00
9.25
0.45
0.00
0.00
9.50
0.47
0.00
0.00
9.75
0.50
0.00
0.00
10.00
0.52
0.00
0.00
10.25
0.56
0.00
0.00
10.50
0.59
0.00
0.00
10.75
0.63
0.00
0.00
11.00
0.68
0.00
0.00
11.25
0.74
0.00
0.00
11.50
0.82
0.00
0.00
11.75
1.12
0.03
0.08
12.00
1.92
0.26
0.69
12.25
2.05
0.31
0.12
12.50
2.13
0.35
0.08
12.75
2.19
0.38
0.06
13.00
2.24
0.40
0.05
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
13.25
2.28
0.42
0.04
13.50
2.32
0.44
0.04
13.75
2.35
0.45
0.04
14.00
2.38
0.47
0.03
14.25
2.40
0.48
0.03
14.50
2.43
0.49
0.03
14.75
2.45
0.50
0.03
15.00
2.48
0.52
0.03
15.25
2.50
0.53
0.02
15.50
2.52
0.54
0.02
15.75
2.53
0.55
0.02
16.00
2.55
0.56
0.02
16.25
2.57
0.56
0.02
16.50
2.58
0.57
0.02
16.75
2.60
0.58
0.02
17.00
2.62
0.59
0.02
17.25
2.63
0.60
0.02
17.50
2.64
0.61
0.02
17.75
2.66
0.61
0.02
18.00
2.67
0.62
0.02
18.25
2.68
0.63
0.02
18.50
2.70
0.63
0.02
18.75
2.71
0.64
0.01
19.00
2.72
0.65
0.01
19.25
2.73
0.65
0.01
19.50
2.74
0.66
0.01
19.75
2.75
0.66
0.01
20.00
2.76
0.67
0.01
20.25
2.77
0.67
0.01
20.50
2.78
0.68
0.01
20.75
2.79
0.69
0.01
21.00
2.80
0.69
0.01
21.25
2.81
0.70
0.01
21.50
2.82
0.70
0.01
21.75
2.82
0.71
0.01
22.00
2.83
0.71
0.01
22.25
2.84
0.72
0.01
22.50
2.85
0.72
0.01
22.75
2.86
0.73
0.01
23.00
2.87
0.73
0.01
23.25
2.88
0.74
0.01
23.50
2.88
0.74
0.01
23.75
2.89
0.74
0.01
24.00
2.90
0.75
0.01
24.25
2.90
0.75
0.00
24.50
2.90
0.75
0.00
24.75
2.90
0.75
0.00
25.00
2.90
0.75
0.00
25.25
2.90
0.75
0.00
25.50
2.90
0.75
0.00
25.75
2.90
0.75
0.00
26.00
2.90
0.75
0.00
26.25
2.90
0.75
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 11
Hydrograph for Subcatchment 4S: Post -development Bypass DA-1 B (continued)
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
26.50
2.90
0.75
0.00
26.75
2.90
0.75
0.00
27.00
2.90
0.75
0.00
27.25
2.90
0.75
0.00
27.50
2.90
0.75
0.00
27.75
2.90
0.75
0.00
28.00
2.90
0.75
0.00
28.25
2.90
0.75
0.00
28.50
2.90
0.75
0.00
28.75
2.90
0.75
0.00
29.00
2.90
0.75
0.00
29.25
2.90
0.75
0.00
29.50
2.90
0.75
0.00
29.75
2.90
0.75
0.00
30.00
2.90
0.75
0.00
30.25
2.90
0.75
0.00
30.50
2.90
0.75
0.00
30.75
2.90
0.75
0.00
31.00
2.90
0.75
0.00
31.25
2.90
0.75
0.00
31.50
2.90
0.75
0.00
31.75
2.90
0.75
0.00
32.00
2.90
0.75
0.00
32.25
2.90
0.75
0.00
32.50
2.90
0.75
0.00
32.75
2.90
0.75
0.00
33.00
2.90
0.75
0.00
33.25
2.90
0.75
0.00
33.50
2.90
0.75
0.00
33.75
2.90
0.75
0.00
34.00
2.90
0.75
0.00
34.25
2.90
0.75
0.00
34.50
2.90
0.75
0.00
34.75
2.90
0.75
0.00
35.00
2.90
0.75
0.00
35.25
2.90
0.75
0.00
35.50
2.90
0.75
0.00
35.75
2.90
0.75
0.00
36.00
2.90
0.75
0.00
36.25
2.90
0.75
0.00
36.50
2.90
0.75
0.00
36.75
2.90
0.75
0.00
37.00
2.90
0.75
0.00
37.25
2.90
0.75
0.00
37.50
2.90
0.75
0.00
37.75
2.90
0.75
0.00
38.00
2.90
0.75
0.00
38.25
2.90
0.75
0.00
38.50
2.90
0.75
0.00
38.75
2.90
0.75
0.00
39.00
2.90
0.75
0.00
39.25
2.90
0.75
0.00
39.50
2.90
0.75
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
39.75
2.90
0.75
0.00
40.00
2.90
0.75
0.00
40.25
2.90
0.75
0.00
40.50
2.90
0.75
0.00
40.75
2.90
0.75
0.00
41.00
2.90
0.75
0.00
41.25
2.90
0.75
0.00
41.50
2.90
0.75
0.00
41.75
2.90
0.75
0.00
42.00
2.90
0.75
0.00
42.25
2.90
0.75
0.00
42.50
2.90
0.75
0.00
42.75
2.90
0.75
0.00
43.00
2.90
0.75
0.00
43.25
2.90
0.75
0.00
43.50
2.90
0.75
0.00
43.75
2.90
0.75
0.00
44.00
2.90
0.75
0.00
44.25
2.90
0.75
0.00
44.50
2.90
0.75
0.00
44.75
2.90
0.75
0.00
45.00
2.90
0.75
0.00
45.25
2.90
0.75
0.00
45.50
2.90
0.75
0.00
45.75
2.90
0.75
0.00
46.00
2.90
0.75
0.00
46.25
2.90
0.75
0.00
46.50
2.90
0.75
0.00
46.75
2.90
0.75
0.00
47.00
2.90
0.75
0.00
47.25
2.90
0.75
0.00
47.50
2.90
0.75
0.00
47.75
2.90
0.75
0.00
48.00
2.90
0.75
0.00
48.25
2.90
0.75
0.00
48.50
2.90
0.75
0.00
48.75
2.90
0.75
0.00
49.00
2.90
0.75
0.00
49.25
2.90
0.75
0.00
49.50
2.90
0.75
0.00
49.75
2.90
0.75
0.00
50.00
2.90
0.75
0.00
50.25
2.90
0.75
0.00
50.50
2.90
0.75
0.00
50.75
2.90
0.75
0.00
51.00
2.90
0.75
0.00
51.25
2.90
0.75
0.00
51.50
2.90
0.75
0.00
51.75
2.90
0.75
0.00
52.00
2.90
0.75
0.00
52.25
2.90
0.75
0.00
52.50
2.90
0.75
0.00
52.75
2.90
0.75
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 12
Hydrograph for Subcatchment 4S: Post -development Bypass DA-1 B (continued)
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
2.90
0.75
0.00
53.25
2.90
0.75
0.00
53.50
2.90
0.75
0.00
53.75
2.90
0.75
0.00
54.00
2.90
0.75
0.00
54.25
2.90
0.75
0.00
54.50
2.90
0.75
0.00
54.75
2.90
0.75
0.00
55.00
2.90
0.75
0.00
55.25
2.90
0.75
0.00
55.50
2.90
0.75
0.00
55.75
2.90
0.75
0.00
56.00
2.90
0.75
0.00
56.25
2.90
0.75
0.00
56.50
2.90
0.75
0.00
56.75
2.90
0.75
0.00
57.00
2.90
0.75
0.00
57.25
2.90
0.75
0.00
57.50
2.90
0.75
0.00
57.75
2.90
0.75
0.00
58.00
2.90
0.75
0.00
58.25
2.90
0.75
0.00
58.50
2.90
0.75
0.00
58.75
2.90
0.75
0.00
59.00
2.90
0.75
0.00
59.25
2.90
0.75
0.00
59.50
2.90
0.75
0.00
59.75
2.90
0.75
0.00
60.00
2.90
0.75
0.00
60.25
2.90
0.75
0.00
60.50
2.90
0.75
0.00
60.75
2.90
0.75
0.00
61.00
2.90
0.75
0.00
61.25
2.90
0.75
0.00
61.50
2.90
0.75
0.00
61.75
2.90
0.75
0.00
62.00
2.90
0.75
0.00
62.25
2.90
0.75
0.00
62.50
2.90
0.75
0.00
62.75
2.90
0.75
0.00
63.00
2.90
0.75
0.00
63.25
2.90
0.75
0.00
63.50
2.90
0.75
0.00
63.75
2.90
0.75
0.00
64.00
2.90
0.75
0.00
64.25
2.90
0.75
0.00
64.50
2.90
0.75
0.00
64.75
2.90
0.75
0.00
65.00
2.90
0.75
0.00
65.25
2.90
0.75
0.00
65.50
2.90
0.75
0.00
65.75
2.90
0.75
0.00
66.00
2.90
0.75
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
66.25
2.90
0.75
0.00
66.50
2.90
0.75
0.00
66.75
2.90
0.75
0.00
67.00
2.90
0.75
0.00
67.25
2.90
0.75
0.00
67.50
2.90
0.75
0.00
67.75
2.90
0.75
0.00
68.00
2.90
0.75
0.00
68.25
2.90
0.75
0.00
68.50
2.90
0.75
0.00
68.75
2.90
0.75
0.00
69.00
2.90
0.75
0.00
69.25
2.90
0.75
0.00
69.50
2.90
0.75
0.00
69.75
2.90
0.75
0.00
70.00
2.90
0.75
0.00
70.25
2.90
0.75
0.00
70.50
2.90
0.75
0.00
70.75
2.90
0.75
0.00
71.00
2.90
0.75
0.00
71.25
2.90
0.75
0.00
71.50
2.90
0.75
0.00
71.75
2.90
0.75
0.00
72.00
2.90
0.75
0.00
72.25
2.90
0.75
0.00
72.50
2.90
0.75
0.00
72.75
2.90
0.75
0.00
73.00
2.90
0.75
0.00
73.25
2.90
0.75
0.00
73.50
2.90
0.75
0.00
73.75
2.90
0.75
0.00
74.00
2.90
0.75
0.00
74.25
2.90
0.75
0.00
74.50
2.90
0.75
0.00
74.75
2.90
0.75
0.00
75.00
2.90
0.75
0.00
75.25
2.90
0.75
0.00
75.50
2.90
0.75
0.00
75.75
2.90
0.75
0.00
76.00
2.90
0.75
0.00
76.25
2.90
0.75
0.00
76.50
2.90
0.75
0.00
76.75
2.90
0.75
0.00
77.00
2.90
0.75
0.00
77.25
2.90
0.75
0.00
77.50
2.90
0.75
0.00
77.75
2.90
0.75
0.00
78.00
2.90
0.75
0.00
78.25
2.90
0.75
0.00
78.50
2.90
0.75
0.00
78.75
2.90
0.75
0.00
79.00
2.90
0.75
0.00
79.25
2.90
0.75
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 13
Hydrograph for Subcatchment 4S: Post -development Bypass DA-1 B (continued)
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
79.50
2.90
0.75
0.00
79.75
2.90
0.75
0.00
80.00
2.90
0.75
0.00
80.25
2.90
0.75
0.00
80.50
2.90
0.75
0.00
80.75
2.90
0.75
0.00
81.00
2.90
0.75
0.00
81.25
2.90
0.75
0.00
81.50
2.90
0.75
0.00
81.75
2.90
0.75
0.00
82.00
2.90
0.75
0.00
82.25
2.90
0.75
0.00
82.50
2.90
0.75
0.00
82.75
2.90
0.75
0.00
83.00
2.90
0.75
0.00
83.25
2.90
0.75
0.00
83.50
2.90
0.75
0.00
83.75
2.90
0.75
0.00
84.00
2.90
0.75
0.00
84.25
2.90
0.75
0.00
84.50
2.90
0.75
0.00
84.75
2.90
0.75
0.00
85.00
2.90
0.75
0.00
85.25
2.90
0.75
0.00
85.50
2.90
0.75
0.00
85.75
2.90
0.75
0.00
86.00
2.90
0.75
0.00
86.25
2.90
0.75
0.00
86.50
2.90
0.75
0.00
86.75
2.90
0.75
0.00
87.00
2.90
0.75
0.00
87.25
2.90
0.75
0.00
87.50
2.90
0.75
0.00
87.75
2.90
0.75
0.00
88.00
2.90
0.75
0.00
88.25
2.90
0.75
0.00
88.50
2.90
0.75
0.00
88.75
2.90
0.75
0.00
89.00
2.90
0.75
0.00
89.25
2.90
0.75
0.00
89.50
2.90
0.75
0.00
89.75
2.90
0.75
0.00
90.00
2.90
0.75
0.00
90.25
2.90
0.75
0.00
90.50
2.90
0.75
0.00
90.75
2.90
0.75
0.00
91.00
2.90
0.75
0.00
91.25
2.90
0.75
0.00
91.50
2.90
0.75
0.00
91.75
2.90
0.75
0.00
92.00
2.90
0.75
0.00
92.25
2.90
0.75
0.00
92.50
2.90
0.75
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
92.75
2.90
0.75
0.00
93.00
2.90
0.75
0.00
93.25
2.90
0.75
0.00
93.50
2.90
0.75
0.00
93.75
2.90
0.75
0.00
94.00
2.90
0.75
0.00
94.25
2.90
0.75
0.00
94.50
2.90
0.75
0.00
94.75
2.90
0.75
0.00
95.00
2.90
0.75
0.00
95.25
2.90
0.75
0.00
95.50
2.90
0.75
0.00
95.75
2.90
0.75
0.00
96.00
2.90
0.75
0.00
96.25
2.90
0.75
0.00
96.50
2.90
0.75
0.00
96.75
2.90
0.75
0.00
97.00
2.90
0.75
0.00
97.25
2.90
0.75
0.00
97.50
2.90
0.75
0.00
97.75
2.90
0.75
0.00
98.00
2.90
0.75
0.00
98.25
2.90
0.75
0.00
98.50
2.90
0.75
0.00
98.75
2.90
0.75
0.00
99.00
2.90
0.75
0.00
99.25
2.90
0.75
0.00
99.50
2.90
0.75
0.00
99.75
2.90
0.75
0.00
100.00
2.90
0.75
0.00
100.25
2.90
0.75
0.00
100.50
2.90
0.75
0.00
100.75
2.90
0.75
0.00
101.00
2.90
0.75
0.00
101.25
2.90
0.75
0.00
101.50
2.90
0.75
0.00
101.75
2.90
0.75
0.00
102.00
2.90
0.75
0.00
102.25
2.90
0.75
0.00
102.50
2.90
0.75
0.00
102.75
2.90
0.75
0.00
103.00
2.90
0.75
0.00
103.25
2.90
0.75
0.00
103.50
2.90
0.75
0.00
103.75
2.90
0.75
0.00
104.00
2.90
0.75
0.00
104.25
2.90
0.75
0.00
104.50
2.90
0.75
0.00
104.75
2.90
0.75
0.00
105.00
2.90
0.75
0.00
105.25
2.90
0.75
0.00
105.50
2.90
0.75
0.00
105.75
2.90
0.75
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 14
Hydrograph for Subcatchment 4S: Post -development Bypass DA-1 B (continued)
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
106.00
2.90
0.75
0.00
106.25
2.90
0.75
0.00
106.50
2.90
0.75
0.00
106.75
2.90
0.75
0.00
107.00
2.90
0.75
0.00
107.25
2.90
0.75
0.00
107.50
2.90
0.75
0.00
107.75
2.90
0.75
0.00
108.00
2.90
0.75
0.00
108.25
2.90
0.75
0.00
108.50
2.90
0.75
0.00
108.75
2.90
0.75
0.00
109.00
2.90
0.75
0.00
109.25
2.90
0.75
0.00
109.50
2.90
0.75
0.00
109.75
2.90
0.75
0.00
110.00
2.90
0.75
0.00
110.25
2.90
0.75
0.00
110.50
2.90
0.75
0.00
110.75
2.90
0.75
0.00
111.00
2.90
0.75
0.00
111.25
2.90
0.75
0.00
111.50
2.90
0.75
0.00
111.75
2.90
0.75
0.00
112.00
2.90
0.75
0.00
112.25
2.90
0.75
0.00
112.50
2.90
0.75
0.00
112.75
2.90
0.75
0.00
113.00
2.90
0.75
0.00
113.25
2.90
0.75
0.00
113.50
2.90
0.75
0.00
113.75
2.90
0.75
0.00
114.00
2.90
0.75
0.00
114.25
2.90
0.75
0.00
114.50
2.90
0.75
0.00
114.75
2.90
0.75
0.00
115.00
2.90
0.75
0.00
115.25
2.90
0.75
0.00
115.50
2.90
0.75
0.00
115.75
2.90
0.75
0.00
116.00
2.90
0.75
0.00
116.25
2.90
0.75
0.00
116.50
2.90
0.75
0.00
116.75
2.90
0.75
0.00
117.00
2.90
0.75
0.00
117.25
2.90
0.75
0.00
117.50
2.90
0.75
0.00
117.75
2.90
0.75
0.00
118.00
2.90
0.75
0.00
118.25
2.90
0.75
0.00
118.50
2.90
0.75
0.00
118.75
2.90
0.75
0.00
119.00
2.90
0.75
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
119.25
2.90
0.75
0.00
119.50
2.90
0.75
0.00
119.75
2.90
0.75
0.00
120.00
2.90
0.75
0.00

Moss Buildings Stormwater Model —Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 15
Summary for Subcatchment 5S: Post -development DA-2
Runoff = 4.21 cfs @ 11.98 hrs, Volume= 0.202 af, Depth= 1.06"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 1-Year Rainfall=2.90"
Area (ac) CN Description
0.070
98
Paved parking & roofs, Onsite
1.580
69
50-75% Grass cover, Fair, HSG B
0.640
98
Paved parking & roofs, Offsite
2.290
78
Weighted Average
1.580
Pervious Area
0.710
Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
6.0 Direct Entry,
Subcatchment 5S: Post -development DA-2
Hydrograph
I I I I I I I I I I I I I I I I I I I I I I I ■Runoff
4.21 cfs
-
I-- -- - -'r - - - ------'I-- -- --'r -F --Ty'IpV11 24=hr-1'I-- e'r-
4
RainfaillT2.90�;"
�Runbffl Awes=2.290 arc
--r- --I--r--r--r--r--I---I--r--r--t--r--r--r--I---I--r--r--r--r--I---I--
3 RLjnpffVQI"me='10.202 elf
Ru�lnoff'IDepth=11.b6iL
PN=7'8
1 I I I I I I I I I I I I I I I I I I I I I I
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 16
Hydrograph for Subcatchment 5S: Post -development DA-2
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
0.25
0.01
0.00
0.00
0.50
0.01
0.00
0.00
0.75
0.02
0.00
0.00
1.00
0.03
0.00
0.00
1.25
0.04
0.00
0.00
1.50
0.05
0.00
0.00
1.75
0.06
0.00
0.00
2.00
0.06
0.00
0.00
2.25
0.07
0.00
0.00
2.50
0.08
0.00
0.00
2.75
0.09
0.00
0.00
3.00
0.10
0.00
0.00
3.25
0.11
0.00
0.00
3.50
0.12
0.00
0.00
3.75
0.13
0.00
0.00
4.00
0.14
0.00
0.00
4.25
0.15
0.00
0.00
4.50
0.16
0.00
0.00
4.75
0.17
0.00
0.00
5.00
0.18
0.00
0.00
5.25
0.19
0.00
0.00
5.50
0.21
0.00
0.00
5.75
0.22
0.00
0.00
6.00
0.23
0.00
0.00
6.25
0.25
0.00
0.00
6.50
0.26
0.00
0.00
6.75
0.27
0.00
0.00
7.00
0.29
0.00
0.00
7.25
0.30
0.00
0.00
7.50
0.32
0.00
0.00
7.75
0.33
0.00
0.00
8.00
0.35
0.00
0.00
8.25
0.36
0.00
0.00
8.50
0.38
0.00
0.00
8.75
0.40
0.00
0.00
9.00
0.43
0.00
0.00
9.25
0.45
0.00
0.00
9.50
0.47
0.00
0.00
9.75
0.50
0.00
0.00
10.00
0.52
0.00
0.00
10.25
0.56
0.00
0.00
10.50
0.59
0.00
0.00
10.75
0.63
0.00
0.01
11.00
0.68
0.00
0.03
11.25
0.74
0.01
0.06
11.50
0.82
0.02
0.11
11.75
1.12
0.09
0.79
12.00
1.92
0.44
4.06
12.25
2.05
0.51
0.63
12.50
2.13
0.56
0.42
12.75
2.19
0.59
0.31
13.00
2.24
0.62
0.27
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
13.25
2.28
0.65
0.23
13.50
2.32
0.67
0.21
13.75
2.35
0.69
0.18
14.00
2.38
0.71
0.16
14.25
2.40
0.73
0.15
14.50
2.43
0.74
0.15
14.75
2.45
0.76
0.14
15.00
2.48
0.77
0.13
15.25
2.50
0.79
0.13
15.50
2.52
0.80
0.12
15.75
2.53
0.81
0.11
16.00
2.55
0.82
0.10
16.25
2.57
0.83
0.10
16.50
2.58
0.84
0.10
16.75
2.60
0.85
0.09
17.00
2.62
0.86
0.09
17.25
2.63
0.87
0.09
17.50
2.64
0.88
0.09
17.75
2.66
0.89
0.08
18.00
2.67
0.90
0.08
18.25
2.68
0.91
0.08
18.50
2.70
0.92
0.08
18.75
2.71
0.93
0.07
19.00
2.72
0.93
0.07
19.25
2.73
0.94
0.07
19.50
2.74
0.95
0.07
19.75
2.75
0.96
0.06
20.00
2.76
0.96
0.06
20.25
2.77
0.97
0.06
20.50
2.78
0.97
0.06
20.75
2.79
0.98
0.06
21.00
2.80
0.99
0.06
21.25
2.81
0.99
0.06
21.50
2.82
1.00
0.06
21.75
2.82
1.01
0.06
22.00
2.83
1.01
0.06
22.25
2.84
1.02
0.06
22.50
2.85
1.02
0.05
22.75
2.86
1.03
0.05
23.00
2.87
1.04
0.05
23.25
2.88
1.04
0.05
23.50
2.88
1.05
0.05
23.75
2.89
1.05
0.05
24.00
2.90
1.06
0.05
24.25
2.90
1.06
0.00
24.50
2.90
1.06
0.00
24.75
2.90
1.06
0.00
25.00
2.90
1.06
0.00
25.25
2.90
1.06
0.00
25.50
2.90
1.06
0.00
25.75
2.90
1.06
0.00
26.00
2.90
1.06
0.00
26.25
2.90
1.06
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 17
Hydrograph for Subcatchment 5S: Post -development DA-2 (continued)
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
26.50
2.90
1.06
0.00
26.75
2.90
1.06
0.00
27.00
2.90
1.06
0.00
27.25
2.90
1.06
0.00
27.50
2.90
1.06
0.00
27.75
2.90
1.06
0.00
28.00
2.90
1.06
0.00
28.25
2.90
1.06
0.00
28.50
2.90
1.06
0.00
28.75
2.90
1.06
0.00
29.00
2.90
1.06
0.00
29.25
2.90
1.06
0.00
29.50
2.90
1.06
0.00
29.75
2.90
1.06
0.00
30.00
2.90
1.06
0.00
30.25
2.90
1.06
0.00
30.50
2.90
1.06
0.00
30.75
2.90
1.06
0.00
31.00
2.90
1.06
0.00
31.25
2.90
1.06
0.00
31.50
2.90
1.06
0.00
31.75
2.90
1.06
0.00
32.00
2.90
1.06
0.00
32.25
2.90
1.06
0.00
32.50
2.90
1.06
0.00
32.75
2.90
1.06
0.00
33.00
2.90
1.06
0.00
33.25
2.90
1.06
0.00
33.50
2.90
1.06
0.00
33.75
2.90
1.06
0.00
34.00
2.90
1.06
0.00
34.25
2.90
1.06
0.00
34.50
2.90
1.06
0.00
34.75
2.90
1.06
0.00
35.00
2.90
1.06
0.00
35.25
2.90
1.06
0.00
35.50
2.90
1.06
0.00
35.75
2.90
1.06
0.00
36.00
2.90
1.06
0.00
36.25
2.90
1.06
0.00
36.50
2.90
1.06
0.00
36.75
2.90
1.06
0.00
37.00
2.90
1.06
0.00
37.25
2.90
1.06
0.00
37.50
2.90
1.06
0.00
37.75
2.90
1.06
0.00
38.00
2.90
1.06
0.00
38.25
2.90
1.06
0.00
38.50
2.90
1.06
0.00
38.75
2.90
1.06
0.00
39.00
2.90
1.06
0.00
39.25
2.90
1.06
0.00
39.50
2.90
1.06
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
39.75
2.90
1.06
0.00
40.00
2.90
1.06
0.00
40.25
2.90
1.06
0.00
40.50
2.90
1.06
0.00
40.75
2.90
1.06
0.00
41.00
2.90
1.06
0.00
41.25
2.90
1.06
0.00
41.50
2.90
1.06
0.00
41.75
2.90
1.06
0.00
42.00
2.90
1.06
0.00
42.25
2.90
1.06
0.00
42.50
2.90
1.06
0.00
42.75
2.90
1.06
0.00
43.00
2.90
1.06
0.00
43.25
2.90
1.06
0.00
43.50
2.90
1.06
0.00
43.75
2.90
1.06
0.00
44.00
2.90
1.06
0.00
44.25
2.90
1.06
0.00
44.50
2.90
1.06
0.00
44.75
2.90
1.06
0.00
45.00
2.90
1.06
0.00
45.25
2.90
1.06
0.00
45.50
2.90
1.06
0.00
45.75
2.90
1.06
0.00
46.00
2.90
1.06
0.00
46.25
2.90
1.06
0.00
46.50
2.90
1.06
0.00
46.75
2.90
1.06
0.00
47.00
2.90
1.06
0.00
47.25
2.90
1.06
0.00
47.50
2.90
1.06
0.00
47.75
2.90
1.06
0.00
48.00
2.90
1.06
0.00
48.25
2.90
1.06
0.00
48.50
2.90
1.06
0.00
48.75
2.90
1.06
0.00
49.00
2.90
1.06
0.00
49.25
2.90
1.06
0.00
49.50
2.90
1.06
0.00
49.75
2.90
1.06
0.00
50.00
2.90
1.06
0.00
50.25
2.90
1.06
0.00
50.50
2.90
1.06
0.00
50.75
2.90
1.06
0.00
51.00
2.90
1.06
0.00
51.25
2.90
1.06
0.00
51.50
2.90
1.06
0.00
51.75
2.90
1.06
0.00
52.00
2.90
1.06
0.00
52.25
2.90
1.06
0.00
52.50
2.90
1.06
0.00
52.75
2.90
1.06
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 18
Hydrograph for Subcatchment 5S: Post -development DA-2 (continued)
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
53.00
2.90
1.06
0.00
53.25
2.90
1.06
0.00
53.50
2.90
1.06
0.00
53.75
2.90
1.06
0.00
54.00
2.90
1.06
0.00
54.25
2.90
1.06
0.00
54.50
2.90
1.06
0.00
54.75
2.90
1.06
0.00
55.00
2.90
1.06
0.00
55.25
2.90
1.06
0.00
55.50
2.90
1.06
0.00
55.75
2.90
1.06
0.00
56.00
2.90
1.06
0.00
56.25
2.90
1.06
0.00
56.50
2.90
1.06
0.00
56.75
2.90
1.06
0.00
57.00
2.90
1.06
0.00
57.25
2.90
1.06
0.00
57.50
2.90
1.06
0.00
57.75
2.90
1.06
0.00
58.00
2.90
1.06
0.00
58.25
2.90
1.06
0.00
58.50
2.90
1.06
0.00
58.75
2.90
1.06
0.00
59.00
2.90
1.06
0.00
59.25
2.90
1.06
0.00
59.50
2.90
1.06
0.00
59.75
2.90
1.06
0.00
60.00
2.90
1.06
0.00
60.25
2.90
1.06
0.00
60.50
2.90
1.06
0.00
60.75
2.90
1.06
0.00
61.00
2.90
1.06
0.00
61.25
2.90
1.06
0.00
61.50
2.90
1.06
0.00
61.75
2.90
1.06
0.00
62.00
2.90
1.06
0.00
62.25
2.90
1.06
0.00
62.50
2.90
1.06
0.00
62.75
2.90
1.06
0.00
63.00
2.90
1.06
0.00
63.25
2.90
1.06
0.00
63.50
2.90
1.06
0.00
63.75
2.90
1.06
0.00
64.00
2.90
1.06
0.00
64.25
2.90
1.06
0.00
64.50
2.90
1.06
0.00
64.75
2.90
1.06
0.00
65.00
2.90
1.06
0.00
65.25
2.90
1.06
0.00
65.50
2.90
1.06
0.00
65.75
2.90
1.06
0.00
66.00
2.90
1.06
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
66.25
2.90
1.06
0.00
66.50
2.90
1.06
0.00
66.75
2.90
1.06
0.00
67.00
2.90
1.06
0.00
67.25
2.90
1.06
0.00
67.50
2.90
1.06
0.00
67.75
2.90
1.06
0.00
68.00
2.90
1.06
0.00
68.25
2.90
1.06
0.00
68.50
2.90
1.06
0.00
68.75
2.90
1.06
0.00
69.00
2.90
1.06
0.00
69.25
2.90
1.06
0.00
69.50
2.90
1.06
0.00
69.75
2.90
1.06
0.00
70.00
2.90
1.06
0.00
70.25
2.90
1.06
0.00
70.50
2.90
1.06
0.00
70.75
2.90
1.06
0.00
71.00
2.90
1.06
0.00
71.25
2.90
1.06
0.00
71.50
2.90
1.06
0.00
71.75
2.90
1.06
0.00
72.00
2.90
1.06
0.00
72.25
2.90
1.06
0.00
72.50
2.90
1.06
0.00
72.75
2.90
1.06
0.00
73.00
2.90
1.06
0.00
73.25
2.90
1.06
0.00
73.50
2.90
1.06
0.00
73.75
2.90
1.06
0.00
74.00
2.90
1.06
0.00
74.25
2.90
1.06
0.00
74.50
2.90
1.06
0.00
74.75
2.90
1.06
0.00
75.00
2.90
1.06
0.00
75.25
2.90
1.06
0.00
75.50
2.90
1.06
0.00
75.75
2.90
1.06
0.00
76.00
2.90
1.06
0.00
76.25
2.90
1.06
0.00
76.50
2.90
1.06
0.00
76.75
2.90
1.06
0.00
77.00
2.90
1.06
0.00
77.25
2.90
1.06
0.00
77.50
2.90
1.06
0.00
77.75
2.90
1.06
0.00
78.00
2.90
1.06
0.00
78.25
2.90
1.06
0.00
78.50
2.90
1.06
0.00
78.75
2.90
1.06
0.00
79.00
2.90
1.06
0.00
79.25
2.90
1.06
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 19
Hydrograph for Subcatchment 5S: Post -development DA-2 (continued)
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
79.50
2.90
1.06
0.00
79.75
2.90
1.06
0.00
80.00
2.90
1.06
0.00
80.25
2.90
1.06
0.00
80.50
2.90
1.06
0.00
80.75
2.90
1.06
0.00
81.00
2.90
1.06
0.00
81.25
2.90
1.06
0.00
81.50
2.90
1.06
0.00
81.75
2.90
1.06
0.00
82.00
2.90
1.06
0.00
82.25
2.90
1.06
0.00
82.50
2.90
1.06
0.00
82.75
2.90
1.06
0.00
83.00
2.90
1.06
0.00
83.25
2.90
1.06
0.00
83.50
2.90
1.06
0.00
83.75
2.90
1.06
0.00
84.00
2.90
1.06
0.00
84.25
2.90
1.06
0.00
84.50
2.90
1.06
0.00
84.75
2.90
1.06
0.00
85.00
2.90
1.06
0.00
85.25
2.90
1.06
0.00
85.50
2.90
1.06
0.00
85.75
2.90
1.06
0.00
86.00
2.90
1.06
0.00
86.25
2.90
1.06
0.00
86.50
2.90
1.06
0.00
86.75
2.90
1.06
0.00
87.00
2.90
1.06
0.00
87.25
2.90
1.06
0.00
87.50
2.90
1.06
0.00
87.75
2.90
1.06
0.00
88.00
2.90
1.06
0.00
88.25
2.90
1.06
0.00
88.50
2.90
1.06
0.00
88.75
2.90
1.06
0.00
89.00
2.90
1.06
0.00
89.25
2.90
1.06
0.00
89.50
2.90
1.06
0.00
89.75
2.90
1.06
0.00
90.00
2.90
1.06
0.00
90.25
2.90
1.06
0.00
90.50
2.90
1.06
0.00
90.75
2.90
1.06
0.00
91.00
2.90
1.06
0.00
91.25
2.90
1.06
0.00
91.50
2.90
1.06
0.00
91.75
2.90
1.06
0.00
92.00
2.90
1.06
0.00
92.25
2.90
1.06
0.00
92.50
2.90
1.06
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
92.75
2.90
1.06
0.00
93.00
2.90
1.06
0.00
93.25
2.90
1.06
0.00
93.50
2.90
1.06
0.00
93.75
2.90
1.06
0.00
94.00
2.90
1.06
0.00
94.25
2.90
1.06
0.00
94.50
2.90
1.06
0.00
94.75
2.90
1.06
0.00
95.00
2.90
1.06
0.00
95.25
2.90
1.06
0.00
95.50
2.90
1.06
0.00
95.75
2.90
1.06
0.00
96.00
2.90
1.06
0.00
96.25
2.90
1.06
0.00
96.50
2.90
1.06
0.00
96.75
2.90
1.06
0.00
97.00
2.90
1.06
0.00
97.25
2.90
1.06
0.00
97.50
2.90
1.06
0.00
97.75
2.90
1.06
0.00
98.00
2.90
1.06
0.00
98.25
2.90
1.06
0.00
98.50
2.90
1.06
0.00
98.75
2.90
1.06
0.00
99.00
2.90
1.06
0.00
99.25
2.90
1.06
0.00
99.50
2.90
1.06
0.00
99.75
2.90
1.06
0.00
100.00
2.90
1.06
0.00
100.25
2.90
1.06
0.00
100.50
2.90
1.06
0.00
100.75
2.90
1.06
0.00
101.00
2.90
1.06
0.00
101.25
2.90
1.06
0.00
101.50
2.90
1.06
0.00
101.75
2.90
1.06
0.00
102.00
2.90
1.06
0.00
102.25
2.90
1.06
0.00
102.50
2.90
1.06
0.00
102.75
2.90
1.06
0.00
103.00
2.90
1.06
0.00
103.25
2.90
1.06
0.00
103.50
2.90
1.06
0.00
103.75
2.90
1.06
0.00
104.00
2.90
1.06
0.00
104.25
2.90
1.06
0.00
104.50
2.90
1.06
0.00
104.75
2.90
1.06
0.00
105.00
2.90
1.06
0.00
105.25
2.90
1.06
0.00
105.50
2.90
1.06
0.00
105.75
2.90
1.06
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 20
Hydrograph for Subcatchment 5S: Post -development DA-2 (continued)
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
106.00
2.90
1.06
0.00
106.25
2.90
1.06
0.00
106.50
2.90
1.06
0.00
106.75
2.90
1.06
0.00
107.00
2.90
1.06
0.00
107.25
2.90
1.06
0.00
107.50
2.90
1.06
0.00
107.75
2.90
1.06
0.00
108.00
2.90
1.06
0.00
108.25
2.90
1.06
0.00
108.50
2.90
1.06
0.00
108.75
2.90
1.06
0.00
109.00
2.90
1.06
0.00
109.25
2.90
1.06
0.00
109.50
2.90
1.06
0.00
109.75
2.90
1.06
0.00
110.00
2.90
1.06
0.00
110.25
2.90
1.06
0.00
110.50
2.90
1.06
0.00
110.75
2.90
1.06
0.00
111.00
2.90
1.06
0.00
111.25
2.90
1.06
0.00
111.50
2.90
1.06
0.00
111.75
2.90
1.06
0.00
112.00
2.90
1.06
0.00
112.25
2.90
1.06
0.00
112.50
2.90
1.06
0.00
112.75
2.90
1.06
0.00
113.00
2.90
1.06
0.00
113.25
2.90
1.06
0.00
113.50
2.90
1.06
0.00
113.75
2.90
1.06
0.00
114.00
2.90
1.06
0.00
114.25
2.90
1.06
0.00
114.50
2.90
1.06
0.00
114.75
2.90
1.06
0.00
115.00
2.90
1.06
0.00
115.25
2.90
1.06
0.00
115.50
2.90
1.06
0.00
115.75
2.90
1.06
0.00
116.00
2.90
1.06
0.00
116.25
2.90
1.06
0.00
116.50
2.90
1.06
0.00
116.75
2.90
1.06
0.00
117.00
2.90
1.06
0.00
117.25
2.90
1.06
0.00
117.50
2.90
1.06
0.00
117.75
2.90
1.06
0.00
118.00
2.90
1.06
0.00
118.25
2.90
1.06
0.00
118.50
2.90
1.06
0.00
118.75
2.90
1.06
0.00
119.00
2.90
1.06
0.00
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
119.25
2.90
1.06
0.00
119.50
2.90
1.06
0.00
119.75
2.90
1.06
0.00
120.00
2.90
1.06
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year
Rainfall=2.90"
Prepared by FLM Engineering, Inc.
Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC
Page 21
Summary for Pond 1 P: WETLAND 1
Inflow Area = 3.780 ac, 70.37% Impervious, Inflow Depth = 1.81" for 1-Year
event
Inflow = 11.57 cfs @ 11.97 hrs, Volume= 0.570 of
Outflow = 0.46 cfs @ 13.54 hrs, Volume= 0.569 af, Atten= 96%,
Lag= 94.5 min
Primary = 0.46 cfs @ 13.54 hrs, Volume= 0.569 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 298.21' @ 13.54 hrs Surf.Area= 8,248 sf Storage= 15,016 cf
Plug -Flow detention time= 890.2 min calculated for 0.569 of (100% of inflow)
Center -of -Mass det. time= 890.9 min ( 1,702.9 - 812.0 )
Volume Invert Avail.Storage Storage Description
#1 296.00' 54,972 cf Custom Stage Data (Irregular)Listed below
Elevation Surf.Area Perim. Inc.Store Cum.Store
Wet.Area
(feet) (sq-ft) (feet) (cubic -feet) (cubic -feet)
(sq-ft)
296.00 4,864 424.4 0 0
4,864
296.10 5,412 443.2 514 514
6,163
297.00 6,632 460.1 5,411 5,924
7,444
298.00 8,005 380.2 7,308 13,232
12,803
299.00 9,173 399.0 8,582 21,814
14,032
300.00 10,399 417.9 9,780 31,594
15,327
301.00 11,681 436.7 11,034 42,628
16,675
302.00 13,019 455.6 12,344 54,972
18,089
Device Routina Invert Outlet Devices
#1
Primary
296.00'
24.0" x 50.0' long Culvert RCP, groove end projecting, Ke= 0.200
Outlet Invert= 295.50' S= 0.0100 7' Cc= 0.900 n= 0.013
#2
Device 1
296.00'
1.5" Vert. Orifice C= 0.600
#3
Device 1
297.25'
4.0" Vert. Orifice C= 0.600
#4
Device 1
299.50'
4.00' x 4.00' Horiz. Grate Limited to weir flow C= 0.600
#5
Secondary
300.50'
20.0' long x 16.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63
Primary OutFlow Max=0.46 cfs @ 13.54 hrs HW=298.21' (Free Discharge)
L1=Culvert (Passes 0.46 cfs of 17.66 cfs potential flow)
12=Orifice (Orifice Controls 0.09 cfs @ 7.05 fps)
3=Orifice (Orifice Controls 0.37 cfs @ 4.28 fps)
4=Grate ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=296.00' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

Moss Buildings Stormwater Model —Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 22
'1 1iL•5i1ATiyl=11IIWA01IN
Hydrograph
11.57 cfs
L--__1--__L____L____L__L_L__L_L__L__I__L__I__L__I
_L--
MInflow
outflow
-y- y--T-1--+--I�--T--I--
--I--y
rw,y q
❑Primary
Secondary
12
Pea1►+ 1►+
11
- -I--III
- -
- ---L----T----7----7--T--1--L-
--II+-
-III-- --III-- --III--
--IIL-
Stoi--aqo=151'�01-6-e# -
10
I
I I
I
I I
I I I I I
I
I I I I I I I I I
8-
u 7
7
T
T
--IL- --li -
--IL-
--T- --T----T----T----7--
0 6--
LL
5
---L----+--------------L---L---L----L----+----�--
I I
I
I I
I I I I I
I
I
4
L__I__1__I__1__I__L__I__L__L_L__
L_L__ L__I__L__I__1__I__1__
3
2
0.46
cfs
0.00 cfs
0
0
5 10 15 20 25 30
35
40 45
50 55 60 65 70
75
80 85 90 95 100 105 110 115 120
Time (hours)

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 23
Hydrograph for Pond 1P: WETLAND 1
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
0.00
0.00
0
296.00
0.00
0.00
0.00
0.25
0.00
0
296.00
0.00
0.00
0.00
0.50
0.00
0
296.00
0.00
0.00
0.00
0.75
0.00
0
296.00
0.00
0.00
0.00
1.00
0.00
0
296.00
0.00
0.00
0.00
1.25
0.00
0
296.00
0.00
0.00
0.00
1.50
0.00
0
296.00
0.00
0.00
0.00
1.75
0.00
0
296.00
0.00
0.00
0.00
2.00
0.00
0
296.00
0.00
0.00
0.00
2.25
0.00
0
296.00
0.00
0.00
0.00
2.50
0.00
0
296.00
0.00
0.00
0.00
2.75
0.00
0
296.00
0.00
0.00
0.00
3.00
0.00
0
296.00
0.00
0.00
0.00
3.25
0.00
0
296.00
0.00
0.00
0.00
3.50
0.00
0
296.00
0.00
0.00
0.00
3.75
0.00
0
296.00
0.00
0.00
0.00
4.00
0.00
0
296.00
0.00
0.00
0.00
4.25
0.00
0
296.00
0.00
0.00
0.00
4.50
0.00
0
296.00
0.00
0.00
0.00
4.75
0.00
0
296.00
0.00
0.00
0.00
5.00
0.00
0
296.00
0.00
0.00
0.00
5.25
0.00
0
296.00
0.00
0.00
0.00
5.50
0.00
0
296.00
0.00
0.00
0.00
5.75
0.00
0
296.00
0.00
0.00
0.00
6.00
0.00
0
296.00
0.00
0.00
0.00
6.25
0.00
0
296.00
0.00
0.00
0.00
6.50
0.00
1
296.00
0.00
0.00
0.00
6.75
0.01
5
296.00
0.00
0.00
0.00
7.00
0.01
13
296.00
0.00
0.00
0.00
7.25
0.02
25
296.00
0.00
0.00
0.00
7.50
0.02
42
296.01
0.00
0.00
0.00
7.75
0.03
64
296.01
0.00
0.00
0.00
8.00
0.03
90
296.02
0.00
0.00
0.00
8.25
0.04
122
296.02
0.00
0.00
0.00
8.50
0.05
162
296.03
0.00
0.00
0.00
8.75
0.06
211
296.04
0.00
0.00
0.00
9.00
0.08
272
296.05
0.00
0.00
0.00
9.25
0.09
344
296.07
0.01
0.01
0.00
9.50
0.10
421
296.08
0.01
0.01
0.00
9.75
0.11
507
296.10
0.01
0.01
0.00
10.00
0.14
609
296.12
0.01
0.01
0.00
10.25
0.17
733
296.14
0.02
0.02
0.00
10.50
0.21
887
296.16
0.02
0.02
0.00
10.75
0.26
1,079
296.19
0.02
0.02
0.00
11.00
0.33
1,325
296.23
0.02
0.02
0.00
11.25
0.46
1,650
296.29
0.03
0.03
0.00
11.50
0.64
2,113
296.37
0.03
0.03
0.00
11.75
3.30
3,472
296.59
0.04
0.04
0.00
12.00
10.95
10,183
297.58
0.24
0.24
0.00
12.25
1.55
13,568
298.04
0.41
0.41
0.00
12.50
1.00
14,321
298.13
0.44
0.44
0.00
12.75
0.74
14,670
298.17
0.45
0.45
0.00
13.00
0.62
14,873
298.19
0.46
0.46
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 24
Hydrograph for Pond 1P: WETLAND 1 (continued)
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
13.25
0.54
14,976
298.20
0.46
0.46
0.00
13.50
0.47
15,015
298.21
0.46
0.46
0.00
13.75
0.42
14,999
298.21
0.46
0.46
0.00
14.00
0.37
14,941
298.20
0.46
0.46
0.00
14.25
0.34
14,849
298.19
0.46
0.46
0.00
14.50
0.33
14,743
298.18
0.45
0.45
0.00
14.75
0.31
14,626
298.16
0.45
0.45
0.00
15.00
0.30
14,497
298.15
0.44
0.44
0.00
15.25
0.28
14,358
298.13
0.44
0.44
0.00
15.50
0.26
14,208
298.11
0.44
0.44
0.00
15.75
0.25
14,047
298.09
0.43
0.43
0.00
16.00
0.23
13,876
298.08
0.42
0.42
0.00
16.25
0.22
13,698
298.05
0.42
0.42
0.00
16.50
0.21
13,518
298.03
0.41
0.41
0.00
16.75
0.21
13,339
298.01
0.41
0.41
0.00
17.00
0.20
13,161
297.99
0.40
0.40
0.00
17.25
0.20
12,983
297.97
0.39
0.39
0.00
17.50
0.19
12,807
297.94
0.39
0.39
0.00
17.75
0.18
12,632
297.92
0.38
0.38
0.00
18.00
0.18
12,458
297.89
0.37
0.37
0.00
18.25
0.17
12,287
297.87
0.36
0.36
0.00
18.50
0.17
12,116
297.85
0.35
0.35
0.00
18.75
0.16
11,948
297.82
0.35
0.35
0.00
19.00
0.15
11,782
297.80
0.34
0.34
0.00
19.25
0.15
11,617
297.78
0.33
0.33
0.00
19.50
0.14
11,455
297.76
0.32
0.32
0.00
19.75
0.14
11,294
297.73
0.31
0.31
0.00
20.00
0.13
11,136
297.71
0.30
0.30
0.00
20.25
0.13
10,982
297.69
0.30
0.30
0.00
20.50
0.13
10,834
297.67
0.29
0.29
0.00
20.75
0.13
10,692
297.65
0.28
0.28
0.00
21.00
0.12
10,558
297.63
0.27
0.27
0.00
21.25
0.12
10,430
297.62
0.26
0.26
0.00
21.50
0.12
10,308
297.60
0.25
0.25
0.00
21.75
0.12
10,193
297.58
0.24
0.24
0.00
22.00
0.12
10,084
297.57
0.24
0.24
0.00
22.25
0.12
9,980
297.56
0.23
0.23
0.00
22.50
0.12
9,884
297.54
0.22
0.22
0.00
22.75
0.12
9,795
297.53
0.21
0.21
0.00
23.00
0.11
9,712
297.52
0.20
0.20
0.00
23.25
0.11
9,635
297.51
0.20
0.20
0.00
23.50
0.11
9,563
297.50
0.19
0.19
0.00
23.75
0.11
9,497
297.49
0.18
0.18
0.00
24.00
0.11
9,435
297.48
0.18
0.18
0.00
24.25
0.00
9,318
297.46
0.16
0.16
0.00
24.50
0.00
9,177
297.45
0.15
0.15
0.00
24.75
0.00
9,048
297.43
0.14
0.14
0.00
25.00
0.00
8,929
297.41
0.13
0.13
0.00
25.25
0.00
8,820
297.40
0.12
0.12
0.00
25.50
0.00
8,718
297.38
0.11
0.11
0.00
25.75
0.00
8,624
297.37
0.10
0.10
0.00
26.00
0.00
8,535
297.36
0.10
0.10
0.00
26.25
0.00
8,452
297.35
0.09
0.09
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 25
Hydrograph for Pond 1P: WETLAND 1 (continued)
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
26.50
0.00
8,372
297.34
0.09
0.09
0.00
26.75
0.00
8,298
297.32
0.08
0.08
0.00
27.00
0.00
8,227
297.32
0.08
0.08
0.00
27.25
0.00
8,159
297.31
0.08
0.08
0.00
27.50
0.00
8,092
297.30
0.07
0.07
0.00
27.75
0.00
8,027
297.29
0.07
0.07
0.00
28.00
0.00
7,964
297.28
0.07
0.07
0.00
28.25
0.00
7,903
297.27
0.07
0.07
0.00
28.50
0.00
7,843
297.26
0.07
0.07
0.00
28.75
0.00
7,784
297.25
0.06
0.06
0.00
29.00
0.00
7,726
297.25
0.06
0.06
0.00
29.25
0.00
7,669
297.24
0.06
0.06
0.00
29.50
0.00
7,611
297.23
0.06
0.06
0.00
29.75
0.00
7,554
297.22
0.06
0.06
0.00
30.00
0.00
7,496
297.22
0.06
0.06
0.00
30.25
0.00
7,439
297.21
0.06
0.06
0.00
30.50
0.00
7,383
297.20
0.06
0.06
0.00
30.75
0.00
7,326
297.19
0.06
0.06
0.00
31.00
0.00
7,270
297.18
0.06
0.06
0.00
31.25
0.00
7,213
297.18
0.06
0.06
0.00
31.50
0.00
7,157
297.17
0.06
0.06
0.00
31.75
0.00
7,102
297.16
0.06
0.06
0.00
32.00
0.00
7,046
297.15
0.06
0.06
0.00
32.25
0.00
6,990
297.15
0.06
0.06
0.00
32.50
0.00
6,935
297.14
0.06
0.06
0.00
32.75
0.00
6,880
297.13
0.06
0.06
0.00
33.00
0.00
6,825
297.12
0.06
0.06
0.00
33.25
0.00
6,771
297.12
0.06
0.06
0.00
33.50
0.00
6,716
297.11
0.06
0.06
0.00
33.75
0.00
6,662
297.10
0.06
0.06
0.00
34.00
0.00
6,608
297.09
0.06
0.06
0.00
34.25
0.00
6,554
297.09
0.06
0.06
0.00
34.50
0.00
6,500
297.08
0.06
0.06
0.00
34.75
0.00
6,447
297.07
0.06
0.06
0.00
35.00
0.00
6,393
297.06
0.06
0.06
0.00
35.25
0.00
6,340
297.06
0.06
0.06
0.00
35.50
0.00
6,287
297.05
0.06
0.06
0.00
35.75
0.00
6,235
297.04
0.06
0.06
0.00
36.00
0.00
6,182
297.04
0.06
0.06
0.00
36.25
0.00
6,130
297.03
0.06
0.06
0.00
36.50
0.00
6,077
297.02
0.06
0.06
0.00
36.75
0.00
6,026
297.01
0.06
0.06
0.00
37.00
0.00
5,974
297.01
0.06
0.06
0.00
37.25
0.00
5,922
297.00
0.06
0.06
0.00
37.50
0.00
5,871
296.99
0.06
0.06
0.00
37.75
0.00
5,820
296.98
0.06
0.06
0.00
38.00
0.00
5,769
296.97
0.06
0.06
0.00
38.25
0.00
5,718
296.97
0.06
0.06
0.00
38.50
0.00
5,668
296.96
0.06
0.06
0.00
38.75
0.00
5,618
296.95
0.06
0.06
0.00
39.00
0.00
5,568
296.94
0.06
0.06
0.00
39.25
0.00
5,518
296.93
0.06
0.06
0.00
39.50
0.00
5,468
296.92
0.05
0.05
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 26
Hydrograph for Pond 1P: WETLAND 1 (continued)
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
39.75
0.00
5,419
296.92
0.05
0.05
0.00
40.00
0.00
5,370
296.91
0.05
0.05
0.00
40.25
0.00
5,321
296.90
0.05
0.05
0.00
40.50
0.00
5,273
296.89
0.05
0.05
0.00
40.75
0.00
5,225
296.88
0.05
0.05
0.00
41.00
0.00
5,176
296.88
0.05
0.05
0.00
41.25
0.00
5,129
296.87
0.05
0.05
0.00
41.50
0.00
5,081
296.86
0.05
0.05
0.00
41.75
0.00
5,034
296.85
0.05
0.05
0.00
42.00
0.00
4,987
296.84
0.05
0.05
0.00
42.25
0.00
4,940
296.84
0.05
0.05
0.00
42.50
0.00
4,893
296.83
0.05
0.05
0.00
42.75
0.00
4,847
296.82
0.05
0.05
0.00
43.00
0.00
4,800
296.81
0.05
0.05
0.00
43.25
0.00
4,754
296.81
0.05
0.05
0.00
43.50
0.00
4,709
296.80
0.05
0.05
0.00
43.75
0.00
4,663
296.79
0.05
0.05
0.00
44.00
0.00
4,618
296.78
0.05
0.05
0.00
44.25
0.00
4,573
296.78
0.05
0.05
0.00
44.50
0.00
4,528
296.77
0.05
0.05
0.00
44.75
0.00
4,484
296.76
0.05
0.05
0.00
45.00
0.00
4,439
296.75
0.05
0.05
0.00
45.25
0.00
4,395
296.75
0.05
0.05
0.00
45.50
0.00
4,351
296.74
0.05
0.05
0.00
45.75
0.00
4,308
296.73
0.05
0.05
0.00
46.00
0.00
4,265
296.72
0.05
0.05
0.00
46.25
0.00
4,221
296.72
0.05
0.05
0.00
46.50
0.00
4,178
296.71
0.05
0.05
0.00
46.75
0.00
4,136
296.70
0.05
0.05
0.00
47.00
0.00
4,093
296.70
0.05
0.05
0.00
47.25
0.00
4,051
296.69
0.05
0.05
0.00
47.50
0.00
4,009
296.68
0.05
0.05
0.00
47.75
0.00
3,968
296.67
0.05
0.05
0.00
48.00
0.00
3,926
296.67
0.05
0.05
0.00
48.25
0.00
3,885
296.66
0.05
0.05
0.00
48.50
0.00
3,844
296.65
0.05
0.05
0.00
48.75
0.00
3,803
296.65
0.05
0.05
0.00
49.00
0.00
3,763
296.64
0.04
0.04
0.00
49.25
0.00
3,722
296.63
0.04
0.04
0.00
49.50
0.00
3,682
296.63
0.04
0.04
0.00
49.75
0.00
3,642
296.62
0.04
0.04
0.00
50.00
0.00
3,603
296.61
0.04
0.04
0.00
50.25
0.00
3,563
296.61
0.04
0.04
0.00
50.50
0.00
3,524
296.60
0.04
0.04
0.00
50.75
0.00
3,485
296.59
0.04
0.04
0.00
51.00
0.00
3,447
296.59
0.04
0.04
0.00
51.25
0.00
3,408
296.58
0.04
0.04
0.00
51.50
0.00
3,370
296.58
0.04
0.04
0.00
51.75
0.00
3,332
296.57
0.04
0.04
0.00
52.00
0.00
3,294
296.56
0.04
0.04
0.00
52.25
0.00
3,257
296.56
0.04
0.04
0.00
52.50
0.00
3,220
296.55
0.04
0.04
0.00
52.75
0.00
3,183
296.54
0.04
0.04
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 27
Hydrograph for Pond 1P: WETLAND 1 (continued)
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
53.00
0.00
3,146
296.54
0.04
0.04
0.00
53.25
0.00
3,109
296.53
0.04
0.04
0.00
53.50
0.00
3,073
296.53
0.04
0.04
0.00
53.75
0.00
3,037
296.52
0.04
0.04
0.00
54.00
0.00
3,001
296.51
0.04
0.04
0.00
54.25
0.00
2,966
296.51
0.04
0.04
0.00
54.50
0.00
2,930
296.50
0.04
0.04
0.00
54.75
0.00
2,895
296.50
0.04
0.04
0.00
55.00
0.00
2,860
296.49
0.04
0.04
0.00
55.25
0.00
2,826
296.48
0.04
0.04
0.00
55.50
0.00
2,791
296.48
0.04
0.04
0.00
55.75
0.00
2,757
296.47
0.04
0.04
0.00
56.00
0.00
2,723
296.47
0.04
0.04
0.00
56.25
0.00
2,689
296.46
0.04
0.04
0.00
56.50
0.00
2,656
296.46
0.04
0.04
0.00
56.75
0.00
2,623
296.45
0.04
0.04
0.00
57.00
0.00
2,590
296.45
0.04
0.04
0.00
57.25
0.00
2,557
296.44
0.04
0.04
0.00
57.50
0.00
2,524
296.43
0.04
0.04
0.00
57.75
0.00
2,492
296.43
0.04
0.04
0.00
58.00
0.00
2,460
296.42
0.04
0.04
0.00
58.25
0.00
2,428
296.42
0.04
0.04
0.00
58.50
0.00
2,397
296.41
0.03
0.03
0.00
58.75
0.00
2,365
296.41
0.03
0.03
0.00
59.00
0.00
2,334
296.40
0.03
0.03
0.00
59.25
0.00
2,303
296.40
0.03
0.03
0.00
59.50
0.00
2,273
296.39
0.03
0.03
0.00
59.75
0.00
2,242
296.39
0.03
0.03
0.00
60.00
0.00
2,212
296.38
0.03
0.03
0.00
60.25
0.00
2,182
296.38
0.03
0.03
0.00
60.50
0.00
2,152
296.37
0.03
0.03
0.00
60.75
0.00
2,123
296.37
0.03
0.03
0.00
61.00
0.00
2,094
296.36
0.03
0.03
0.00
61.25
0.00
2,065
296.36
0.03
0.03
0.00
61.50
0.00
2,036
296.35
0.03
0.03
0.00
61.75
0.00
2,007
296.35
0.03
0.03
0.00
62.00
0.00
1,979
296.34
0.03
0.03
0.00
62.25
0.00
1,951
296.34
0.03
0.03
0.00
62.50
0.00
1,923
296.33
0.03
0.03
0.00
62.75
0.00
1,896
296.33
0.03
0.03
0.00
63.00
0.00
1,868
296.33
0.03
0.03
0.00
63.25
0.00
1,841
296.32
0.03
0.03
0.00
63.50
0.00
1,814
296.32
0.03
0.03
0.00
63.75
0.00
1,788
296.31
0.03
0.03
0.00
64.00
0.00
1,761
296.31
0.03
0.03
0.00
64.25
0.00
1,735
296.30
0.03
0.03
0.00
64.50
0.00
1,709
296.30
0.03
0.03
0.00
64.75
0.00
1,683
296.29
0.03
0.03
0.00
65.00
0.00
1,658
296.29
0.03
0.03
0.00
65.25
0.00
1,633
296.29
0.03
0.03
0.00
65.50
0.00
1,608
296.28
0.03
0.03
0.00
65.75
0.00
1,583
296.28
0.03
0.03
0.00
66.00
0.00
1,558
296.27
0.03
0.03
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 28
Hydrograph for Pond 1P: WETLAND 1 (continued)
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
66.25
0.00
1,534
296.27
0.03
0.03
0.00
66.50
0.00
1,510
296.27
0.03
0.03
0.00
66.75
0.00
1,486
296.26
0.03
0.03
0.00
67.00
0.00
1,463
296.26
0.03
0.03
0.00
67.25
0.00
1,439
296.25
0.03
0.03
0.00
67.50
0.00
1,416
296.25
0.03
0.03
0.00
67.75
0.00
1,393
296.25
0.03
0.03
0.00
68.00
0.00
1,371
296.24
0.03
0.03
0.00
68.25
0.00
1,348
296.24
0.02
0.02
0.00
68.50
0.00
1,326
296.24
0.02
0.02
0.00
68.75
0.00
1,304
296.23
0.02
0.02
0.00
69.00
0.00
1,282
296.23
0.02
0.02
0.00
69.25
0.00
1,261
296.22
0.02
0.02
0.00
69.50
0.00
1,240
296.22
0.02
0.02
0.00
69.75
0.00
1,219
296.22
0.02
0.02
0.00
70.00
0.00
1,198
296.21
0.02
0.02
0.00
70.25
0.00
1,178
296.21
0.02
0.02
0.00
70.50
0.00
1,157
296.21
0.02
0.02
0.00
70.75
0.00
1,137
296.20
0.02
0.02
0.00
71.00
0.00
1,118
296.20
0.02
0.02
0.00
71.25
0.00
1,098
296.20
0.02
0.02
0.00
71.50
0.00
1,079
296.19
0.02
0.02
0.00
71.75
0.00
1,060
296.19
0.02
0.02
0.00
72.00
0.00
1,041
296.19
0.02
0.02
0.00
72.25
0.00
1,022
296.18
0.02
0.02
0.00
72.50
0.00
1,004
296.18
0.02
0.02
0.00
72.75
0.00
985
296.18
0.02
0.02
0.00
73.00
0.00
968
296.18
0.02
0.02
0.00
73.25
0.00
950
296.17
0.02
0.02
0.00
73.50
0.00
932
296.17
0.02
0.02
0.00
73.75
0.00
915
296.17
0.02
0.02
0.00
74.00
0.00
898
296.16
0.02
0.02
0.00
74.25
0.00
882
296.16
0.02
0.02
0.00
74.50
0.00
865
296.16
0.02
0.02
0.00
74.75
0.00
849
296.16
0.02
0.02
0.00
75.00
0.00
833
296.15
0.02
0.02
0.00
75.25
0.00
817
296.15
0.02
0.02
0.00
75.50
0.00
802
296.15
0.02
0.02
0.00
75.75
0.00
787
296.15
0.02
0.02
0.00
76.00
0.00
772
296.14
0.02
0.02
0.00
76.25
0.00
757
296.14
0.02
0.02
0.00
76.50
0.00
742
296.14
0.02
0.02
0.00
76.75
0.00
728
296.14
0.02
0.02
0.00
77.00
0.00
714
296.13
0.02
0.02
0.00
77.25
0.00
700
296.13
0.02
0.02
0.00
77.50
0.00
686
296.13
0.02
0.02
0.00
77.75
0.00
673
296.13
0.01
0.01
0.00
78.00
0.00
659
296.12
0.01
0.01
0.00
78.25
0.00
646
296.12
0.01
0.01
0.00
78.50
0.00
633
296.12
0.01
0.01
0.00
78.75
0.00
620
296.12
0.01
0.01
0.00
79.00
0.00
608
296.12
0.01
0.01
0.00
79.25
0.00
596
296.11
0.01
0.01
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 29
Hydrograph for Pond 1P: WETLAND 1 (continued)
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
79.50
0.00
584
296.11
0.01
0.01
0.00
79.75
0.00
572
296.11
0.01
0.01
0.00
80.00
0.00
561
296.11
0.01
0.01
0.00
80.25
0.00
550
296.11
0.01
0.01
0.00
80.50
0.00
539
296.10
0.01
0.01
0.00
80.75
0.00
528
296.10
0.01
0.01
0.00
81.00
0.00
518
296.10
0.01
0.01
0.00
81.25
0.00
508
296.10
0.01
0.01
0.00
81.50
0.00
498
296.10
0.01
0.01
0.00
81.75
0.00
488
296.10
0.01
0.01
0.00
82.00
0.00
479
296.09
0.01
0.01
0.00
82.25
0.00
470
296.09
0.01
0.01
0.00
82.50
0.00
461
296.09
0.01
0.01
0.00
82.75
0.00
452
296.09
0.01
0.01
0.00
83.00
0.00
444
296.09
0.01
0.01
0.00
83.25
0.00
436
296.08
0.01
0.01
0.00
83.50
0.00
428
296.08
0.01
0.01
0.00
83.75
0.00
420
296.08
0.01
0.01
0.00
84.00
0.00
413
296.08
0.01
0.01
0.00
84.25
0.00
406
296.08
0.01
0.01
0.00
84.50
0.00
399
296.08
0.01
0.01
0.00
84.75
0.00
392
296.08
0.01
0.01
0.00
85.00
0.00
385
296.08
0.01
0.01
0.00
85.25
0.00
379
296.07
0.01
0.01
0.00
85.50
0.00
372
296.07
0.01
0.01
0.00
85.75
0.00
366
296.07
0.01
0.01
0.00
86.00
0.00
360
296.07
0.01
0.01
0.00
86.25
0.00
355
296.07
0.01
0.01
0.00
86.50
0.00
349
296.07
0.01
0.01
0.00
86.75
0.00
344
296.07
0.01
0.01
0.00
87.00
0.00
338
296.07
0.01
0.01
0.00
87.25
0.00
333
296.06
0.01
0.01
0.00
87.50
0.00
328
296.06
0.01
0.01
0.00
87.75
0.00
323
296.06
0.01
0.01
0.00
88.00
0.00
319
296.06
0.01
0.01
0.00
88.25
0.00
314
296.06
0.01
0.01
0.00
88.50
0.00
309
296.06
0.00
0.00
0.00
88.75
0.00
305
296.06
0.00
0.00
0.00
89.00
0.00
301
296.06
0.00
0.00
0.00
89.25
0.00
297
296.06
0.00
0.00
0.00
89.50
0.00
292
296.06
0.00
0.00
0.00
89.75
0.00
288
296.06
0.00
0.00
0.00
90.00
0.00
284
296.06
0.00
0.00
0.00
90.25
0.00
280
296.05
0.00
0.00
0.00
90.50
0.00
276
296.05
0.00
0.00
0.00
90.75
0.00
272
296.05
0.00
0.00
0.00
91.00
0.00
269
296.05
0.00
0.00
0.00
91.25
0.00
265
296.05
0.00
0.00
0.00
91.50
0.00
261
296.05
0.00
0.00
0.00
91.75
0.00
257
296.05
0.00
0.00
0.00
92.00
0.00
254
296.05
0.00
0.00
0.00
92.25
0.00
250
296.05
0.00
0.00
0.00
92.50
0.00
247
296.05
0.00
0.00
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 30
Hydrograph for Pond 1P: WETLAND 1 (continued)
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
92.75
0.00
243
296.05
0.00
0.00
0.00
93.00
0.00
240
296.05
0.00
0.00
0.00
93.25
0.00
236
296.05
0.00
0.00
0.00
93.50
0.00
233
296.05
0.00
0.00
0.00
93.75
0.00
230
296.04
0.00
0.00
0.00
94.00
0.00
226
296.04
0.00
0.00
0.00
94.25
0.00
223
296.04
0.00
0.00
0.00
94.50
0.00
220
296.04
0.00
0.00
0.00
94.75
0.00
217
296.04
0.00
0.00
0.00
95.00
0.00
214
296.04
0.00
0.00
0.00
95.25
0.00
211
296.04
0.00
0.00
0.00
95.50
0.00
208
296.04
0.00
0.00
0.00
95.75
0.00
205
296.04
0.00
0.00
0.00
96.00
0.00
202
296.04
0.00
0.00
0.00
96.25
0.00
199
296.04
0.00
0.00
0.00
96.50
0.00
197
296.04
0.00
0.00
0.00
96.75
0.00
194
296.04
0.00
0.00
0.00
97.00
0.00
191
296.04
0.00
0.00
0.00
97.25
0.00
188
296.04
0.00
0.00
0.00
97.50
0.00
186
296.04
0.00
0.00
0.00
97.75
0.00
183
296.04
0.00
0.00
0.00
98.00
0.00
180
296.04
0.00
0.00
0.00
98.25
0.00
178
296.03
0.00
0.00
0.00
98.50
0.00
175
296.03
0.00
0.00
0.00
98.75
0.00
173
296.03
0.00
0.00
0.00
99.00
0.00
171
296.03
0.00
0.00
0.00
99.25
0.00
168
296.03
0.00
0.00
0.00
99.50
0.00
166
296.03
0.00
0.00
0.00
99.75
0.00
163
296.03
0.00
0.00
0.00
100.00
0.00
161
296.03
0.00
0.00
0.00
100.25
0.00
159
296.03
0.00
0.00
0.00
100.50
0.00
157
296.03
0.00
0.00
0.00
100.75
0.00
154
296.03
0.00
0.00
0.00
101.00
0.00
152
296.03
0.00
0.00
0.00
101.25
0.00
150
296.03
0.00
0.00
0.00
101.50
0.00
148
296.03
0.00
0.00
0.00
101.75
0.00
146
296.03
0.00
0.00
0.00
102.00
0.00
144
296.03
0.00
0.00
0.00
102.25
0.00
142
296.03
0.00
0.00
0.00
102.50
0.00
140
296.03
0.00
0.00
0.00
102.75
0.00
138
296.03
0.00
0.00
0.00
103.00
0.00
136
296.03
0.00
0.00
0.00
103.25
0.00
134
296.03
0.00
0.00
0.00
103.50
0.00
132
296.03
0.00
0.00
0.00
103.75
0.00
130
296.03
0.00
0.00
0.00
104.00
0.00
128
296.03
0.00
0.00
0.00
104.25
0.00
127
296.02
0.00
0.00
0.00
104.50
0.00
125
296.02
0.00
0.00
0.00
104.75
0.00
123
296.02
0.00
0.00
0.00
105.00
0.00
121
296.02
0.00
0.00
0.00
105.25
0.00
120
296.02
0.00
0.00
0.00
105.50
0.00
118
296.02
0.00
0.00
0.00
105.75
0.00
116
296.02
0.00
0.00
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 31
Hydrograph for Pond 1P: WETLAND 1 (continued)
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
106.00
0.00
115
296.02
0.00
0.00
0.00
106.25
0.00
113
296.02
0.00
0.00
0.00
106.50
0.00
111
296.02
0.00
0.00
0.00
106.75
0.00
110
296.02
0.00
0.00
0.00
107.00
0.00
108
296.02
0.00
0.00
0.00
107.25
0.00
107
296.02
0.00
0.00
0.00
107.50
0.00
105
296.02
0.00
0.00
0.00
107.75
0.00
104
296.02
0.00
0.00
0.00
108.00
0.00
102
296.02
0.00
0.00
0.00
108.25
0.00
101
296.02
0.00
0.00
0.00
108.50
0.00
99
296.02
0.00
0.00
0.00
108.75
0.00
98
296.02
0.00
0.00
0.00
109.00
0.00
97
296.02
0.00
0.00
0.00
109.25
0.00
95
296.02
0.00
0.00
0.00
109.50
0.00
94
296.02
0.00
0.00
0.00
109.75
0.00
93
296.02
0.00
0.00
0.00
110.00
0.00
91
296.02
0.00
0.00
0.00
110.25
0.00
90
296.02
0.00
0.00
0.00
110.50
0.00
89
296.02
0.00
0.00
0.00
110.75
0.00
88
296.02
0.00
0.00
0.00
111.00
0.00
86
296.02
0.00
0.00
0.00
111.25
0.00
85
296.02
0.00
0.00
0.00
111.50
0.00
84
296.02
0.00
0.00
0.00
111.75
0.00
83
296.02
0.00
0.00
0.00
112.00
0.00
82
296.02
0.00
0.00
0.00
112.25
0.00
80
296.02
0.00
0.00
0.00
112.50
0.00
79
296.02
0.00
0.00
0.00
112.75
0.00
78
296.02
0.00
0.00
0.00
113.00
0.00
77
296.02
0.00
0.00
0.00
113.25
0.00
76
296.01
0.00
0.00
0.00
113.50
0.00
75
296.01
0.00
0.00
0.00
113.75
0.00
74
296.01
0.00
0.00
0.00
114.00
0.00
73
296.01
0.00
0.00
0.00
114.25
0.00
72
296.01
0.00
0.00
0.00
114.50
0.00
71
296.01
0.00
0.00
0.00
114.75
0.00
70
296.01
0.00
0.00
0.00
115.00
0.00
69
296.01
0.00
0.00
0.00
115.25
0.00
68
296.01
0.00
0.00
0.00
115.50
0.00
67
296.01
0.00
0.00
0.00
115.75
0.00
66
296.01
0.00
0.00
0.00
116.00
0.00
65
296.01
0.00
0.00
0.00
116.25
0.00
64
296.01
0.00
0.00
0.00
116.50
0.00
63
296.01
0.00
0.00
0.00
116.75
0.00
62
296.01
0.00
0.00
0.00
117.00
0.00
61
296.01
0.00
0.00
0.00
117.25
0.00
61
296.01
0.00
0.00
0.00
117.50
0.00
60
296.01
0.00
0.00
0.00
117.75
0.00
59
296.01
0.00
0.00
0.00
118.00
0.00
58
296.01
0.00
0.00
0.00
118.25
0.00
57
296.01
0.00
0.00
0.00
118.50
0.00
56
296.01
0.00
0.00
0.00
118.75
0.00
56
296.01
0.00
0.00
0.00
119.00
0.00
55
296.01
0.00
0.00
0.00

Moss Buildings Stormwater Model —Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 32
Hydrograph for Pond 1P: WETLAND 1 (continued)
Time
Inflow
Storage
Elevation
Outflow
Primary
Secondary
(hours)
(cfs)
(cubic -feet)
(feet)
(cfs)
(cfs)
(cfs)
119.25
0.00
54
296.01
0.00
0.00
0.00
119.50
0.00
53
296.01
0.00
0.00
0.00
119.75
0.00
53
296.01
0.00
0.00
0.00
120.00
0.00
52
296.01
0.00
0.00
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 33
Stage -Area -Storage for Pond 1P: WETLAND 1
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
296.00
4,864
0
296.02
4,974
103
296.04
5,083
205
296.06
5,193
308
296.08
5,302
411
296.10
5,412
514
296.12
5,439
634
296.14
5,466
754
296.16
5,493
874
296.18
5,520
994
296.20
5,548
1,115
296.22
5,575
1,235
296.24
5,602
1,355
296.26
5,629
1,475
296.28
5,656
1,596
296.30
5,683
1,716
296.32
5,710
1,836
296.34
5,737
1,956
296.36
5,764
2,077
296.38
5,792
2,197
296.40
5,819
2,317
296.42
5,846
2,437
296.44
5,873
2,558
296.46
5,900
2,678
296.48
5,927
2,798
296.50
5,954
2,918
296.52
5,981
3,038
296.54
6,008
3,159
296.56
6,036
3,279
296.58
6,063
3,399
296.60
6,090
3,519
296.62
6,117
3,640
296.64
6,144
3,760
296.66
6,171
3,880
296.68
6,198
4,000
296.70
6,225
4,121
296.72
6,252
4,241
296.74
6,280
4,361
296.76
6,307
4,481
296.78
6,334
4,601
296.80
6,361
4,722
296.82
6,388
4,842
296.84
6,415
4,962
296.86
6,442
5,082
296.88
6,469
5,203
296.90
6,496
5,323
296.92
6,524
5,443
296.94
6,551
5,563
296.96
6,578
5,684
296.98
6,605
5,804
297.00
6,632
5,924
297.02
6,659
6,070
297.04
6,687
6,216
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
297.06
6,714
6,363
297.08
6,742
6,509
297.10
6,769
6,655
297.12
6,797
6,801
297.14
6,824
6,947
297.16
6,852
7,093
297.18
6,879
7,239
297.20
6,907
7,386
297.22
6,934
7,532
297.24
6,962
7,678
297.25 STORAGE
297.26
6,989
7,824
INTERPOLATED AS
297.28
7,016
7,970
7,751 CF
297.30
7,044
8,116
297.32
7,071
8,263
297.34
7,099
8,409
297.36
7,126
8,555
297.38
7,154
8,701
297.40
7,181
8,847
297.42
7,209
8,993
297.44
7,236
9,139
297.46
7,264
9,286
297.48
7,291
9,432
297.50
7,319
9,578
297.52
7,346
9,724
297.54
7,373
9,870
297.56
7,401
10,016
297.58
7,428
10,163
297.60
7,456
10,309
297.62
7,483
10,455
297.64
7,511
10,601
297.66
7,538
10,747
297.68
7,566
10,893
297.70
7,593
11,039
297.72
7,621
11,186
297.74
7,648
11,332
297.76
7,675
11,478
297.78
7,703
11,624
297.80
7,730
11,770
297.82
7,758
11,916
297.84
7,785
12,063
297.86
7,813
12,209
297.88
7,840
12,355
297.90
7,868
12,501
297.92
7,895
12,647
297.94
7,923
12,793
297.96
7,950
12,939
297.98
7,978
13,086
298.00
8,005
13,232
298.02
8,028
13,403
298.04
8,052
13,575
298.06
8,075
13,747
298.08
8,098
13,918
298.10
8,122
14,090

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 34
Stage -Area -Storage for Pond 1P: WETLAND 1 (continued)
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
298.12
8,145
14,262
298.14
8,169
14,433
298.16
8,192
14,605
298.18
8,215
14,777
298.20
8,239
14,948
298.22
8,262
15,120
298.24
8,285
15,292
298.26
8,309
15,463
298.28
8,332
15,635
298.30
8,355
15,807
298.32
8,379
15,978
298.34
8,402
16,150
298.36
8,425
16,321
298.38
8,449
16,493
298.40
8,472
16,665
298.42
8,496
16,836
298.44
8,519
17,008
298.46
8,542
17,180
298.48
8,566
17,351
298.50
8,589
17,523
298.52
8,612
17,695
298.54
8,636
17,866
298.56
8,659
18,038
298.58
8,682
18,210
298.60
8,706
18,381
298.62
8,729
18,553
298.64
8,753
18,725
298.66
8,776
18,896
298.68
8,799
19,068
298.70
8,823
19,239
298.72
8,846
19,411
298.74
8,869
19,583
298.76
8,893
19,754
298.78
8,916
19,926
298.80
8,939
20,098
298.82
8,963
20,269
298.84
8,986
20,441
298.86
9,009
20,613
298.88
9,033
20,784
298.90
9,056
20,956
298.92
9,080
21,128
298.94
9,103
21,299
298.96
9,126
21,471
298.98
9,150
21,643
299.00
9,173
21,814
299.02
9,198
22,010
299.04
9,222
22,205
299.06
9,247
22,401
299.08
9,271
22,597
299.10
9,296
22,792
299.12
9,320
22,988
299.14
9,345
23,183
299.16
9,369
23,379
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
299.18
9,394
23,575
299.20
9,418
23,770
299.22
9,443
23,966
299.24
9,467
24,161
299.26
9,492
24,357
299.28
9,516
24,552
299.30
9,541
24,748
299.32
9,565
24,944
299.34
9,590
25,139
299.36
9,614
25,335
299.38
9,639
25,530
299.40
9,663
25,726
299.42
9,688
25,922
299.44
9,712
26,117
299.46
9,737
26,313
299.48
9,761
26,508
299.50
9,786
26,704
299.52
9,811
26,900
299.54
9,835
27,095
299.56
9,860
27,291
299.58
9,884
27,486
299.60
9,909
27,682
299.62
9,933
27,878
299.64
9,958
28,073
299.66
9,982
28,269
299.68
10,007
28,464
299.70
10,031
28,660
299.72
10,056
28,855
299.74
10,080
29,051
299.76
10,105
29,247
299.78
10,129
29,442
299.80
10,154
29,638
299.82
10,178
29,833
299.84
10,203
30,029
299.86
10,227
30,225
299.88
10,252
30,420
299.90
10,276
30,616
299.92
10,301
30,811
299.94
10,325
31,007
299.96
10,350
31,203
299.98
10,374
31,398
300.00
10,399
31,594
300.02
10,425
31,814
300.04
10,450
32,035
300.06
10,476
32,256
300.08
10,502
32,476
300.10
10,527
32,697
300.12
10,553
32,918
300.14
10,578
33,139
300.16
10,604
33,359
300.18
10,630
33,580
300.20
10,655
33,801
300.22
10,681
34,021

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 35
Stage -Area -Storage for Pond 1P: WETLAND 1 (continued)
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
300.24
10,707
34,242
300.26
10,732
34,463
300.28
10,758
34,683
300.30
10,784
34,904
300.32
10,809
35,125
300.34
10,835
35,345
300.36
10,861
35,566
300.38
10,886
35,787
300.40
10,912
36,007
300.42
10,937
36,228
300.44
10,963
36,449
300.46
10,989
36,669
300.48
11,014
36,890
300.50
11,040
37,111
300.52
11,066
37,331
300.54
11,091
37,552
300.56
11,117
37,773
300.58
11,143
37,993
300.60
11,168
38,214
300.62
11,194
38,435
300.64
11,219
38,655
300.66
11,245
38,876
300.68
11,271
39,097
300.70
11,296
39,317
300.72
11,322
39,538
300.74
11,348
39,759
300.76
11,373
39,979
300.78
11,399
40,200
300.80
11,425
40,421
300.82
11,450
40,641
300.84
11,476
40,862
300.86
11,502
41,083
300.88
11,527
41,304
300.90
11,553
41,524
300.92
11,578
41,745
300.94
11,604
41,966
300.96
11,630
42,186
300.98
11,655
42,407
301.00
11,681
42,628
301.02
11,708
42,874
301.04
11,735
43,121
301.06
11,761
43,368
301.08
11,788
43,615
301.10
11,815
43,862
301.12
11,842
44,109
301.14
11,868
44,356
301.16
11,895
44,603
301.18
11,922
44,849
301.20
11,949
45,096
301.22
11,975
45,343
301.24
12,002
45,590
301.26
12,029
45,837
301.28
12,056
46,084
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
301.30
12,082
46,331
301.32
12,109
46,578
301.34
12,136
46,825
301.36
12,163
47,071
301.38
12,189
47,318
301.40
12,216
47,565
301.42
12,243
47,812
301.44
12,270
48,059
301.46
12,296
48,306
301.48
12,323
48,553
301.50
12,350
48,800
301.52
12,377
49,046
301.54
12,404
49,293
301.56
12,430
49,540
301.58
12,457
49,787
301.60
12,484
50,034
301.62
12,511
50,281
301.64
12,537
50,528
301.66
12,564
50,775
301.68
12,591
51,021
301.70
12,618
51,268
301.72
12,644
51,515
301.74
12,671
51,762
301.76
12,698
52,009
301.78
12,725
52,256
301.80
12,751
52,503
301.82
12,778
52,750
301.84
12,805
52,996
301.86
12,832
53,243
301.88
12,858
53,490
301.90
12,885
53,737
301.92
12,912
53,984
301.94
12,939
54,231
301.96
12,965
54,478
301.98
12,992
54,725
302.00
13,019
54,972

Moss Buildings Stormwater Model —Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 36
Summary for Link 1 L: Post -development DA-1
Inflow Area = 4.340 ac, 62.44% Impervious, Inflow Depth > 1.67" for 1-Year event
Inflow = 0.94 cfs @ 12.01 hrs, Volume= 0.604 of
Primary = 0.94 cfs @ 12.01 hrs, Volume= 0.604 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 1 L: Post -development DA-1
Hydrograph
■ Inflow
❑ Primary
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 37
Hydrograph for Link 1 L: Post -development DA-1
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
0.00
0.00
0.00
0.00
0.25
0.00
0.00
0.00
0.50
0.00
0.00
0.00
0.75
0.00
0.00
0.00
1.00
0.00
0.00
0.00
1.25
0.00
0.00
0.00
1.50
0.00
0.00
0.00
1.75
0.00
0.00
0.00
2.00
0.00
0.00
0.00
2.25
0.00
0.00
0.00
2.50
0.00
0.00
0.00
2.75
0.00
0.00
0.00
3.00
0.00
0.00
0.00
3.25
0.00
0.00
0.00
3.50
0.00
0.00
0.00
3.75
0.00
0.00
0.00
4.00
0.00
0.00
0.00
4.25
0.00
0.00
0.00
4.50
0.00
0.00
0.00
4.75
0.00
0.00
0.00
5.00
0.00
0.00
0.00
5.25
0.00
0.00
0.00
5.50
0.00
0.00
0.00
5.75
0.00
0.00
0.00
6.00
0.00
0.00
0.00
6.25
0.00
0.00
0.00
6.50
0.00
0.00
0.00
6.75
0.00
0.00
0.00
7.00
0.00
0.00
0.00
7.25
0.00
0.00
0.00
7.50
0.00
0.00
0.00
7.75
0.00
0.00
0.00
8.00
0.00
0.00
0.00
8.25
0.00
0.00
0.00
8.50
0.00
0.00
0.00
8.75
0.00
0.00
0.00
9.00
0.00
0.00
0.00
9.25
0.01
0.00
0.01
9.50
0.01
0.00
0.01
9.75
0.01
0.00
0.01
10.00
0.01
0.00
0.01
10.25
0.02
0.00
0.02
10.50
0.02
0.00
0.02
10.75
0.02
0.00
0.02
11.00
0.02
0.00
0.02
11.25
0.03
0.00
0.03
11.50
0.03
0.00
0.03
11.75
0.12
0.00
0.12
12.00
0.94
0.00
0.94
12.25
0.53
0.00
0.53
12.50
0.52
0.00
0.52
12.75
0.51
0.00
0.51
13.00
0.51
0.00
0.51
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
13.25
0.50
0.00
0.50
13.50
0.50
0.00
0.50
13.75
0.49
0.00
0.49
14.00
0.49
0.00
0.49
14.25
0.48
0.00
0.48
14.50
0.48
0.00
0.48
14.75
0.48
0.00
0.48
15.00
0.47
0.00
0.47
15.25
0.46
0.00
0.46
15.50
0.46
0.00
0.46
15.75
0.45
0.00
0.45
16.00
0.45
0.00
0.45
16.25
0.44
0.00
0.44
16.50
0.43
0.00
0.43
16.75
0.43
0.00
0.43
17.00
0.42
0.00
0.42
17.25
0.41
0.00
0.41
17.50
0.40
0.00
0.40
17.75
0.39
0.00
0.39
18.00
0.39
0.00
0.39
18.25
0.38
0.00
0.38
18.50
0.37
0.00
0.37
18.75
0.36
0.00
0.36
19.00
0.35
0.00
0.35
19.25
0.34
0.00
0.34
19.50
0.34
0.00
0.34
19.75
0.33
0.00
0.33
20.00
0.32
0.00
0.32
20.25
0.31
0.00
0.31
20.50
0.30
0.00
0.30
20.75
0.29
0.00
0.29
21.00
0.28
0.00
0.28
21.25
0.27
0.00
0.27
21.50
0.26
0.00
0.26
21.75
0.26
0.00
0.26
22.00
0.25
0.00
0.25
22.25
0.24
0.00
0.24
22.50
0.23
0.00
0.23
22.75
0.22
0.00
0.22
23.00
0.21
0.00
0.21
23.25
0.21
0.00
0.21
23.50
0.20
0.00
0.20
23.75
0.19
0.00
0.19
24.00
0.19
0.00
0.19
24.25
0.16
0.00
0.16
24.50
0.15
0.00
0.15
24.75
0.14
0.00
0.14
25.00
0.13
0.00
0.13
25.25
0.12
0.00
0.12
25.50
0.11
0.00
0.11
25.75
0.10
0.00
0.10
26.00
0.10
0.00
0.10
26.25
0.09
0.00
0.09

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 38
Hydrograph for Link 1 L: Post -development DA-1 (continued)
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
26.50
0.09
0.00
0.09
26.75
0.08
0.00
0.08
27.00
0.08
0.00
0.08
27.25
0.08
0.00
0.08
27.50
0.07
0.00
0.07
27.75
0.07
0.00
0.07
28.00
0.07
0.00
0.07
28.25
0.07
0.00
0.07
28.50
0.07
0.00
0.07
28.75
0.06
0.00
0.06
29.00
0.06
0.00
0.06
29.25
0.06
0.00
0.06
29.50
0.06
0.00
0.06
29.75
0.06
0.00
0.06
30.00
0.06
0.00
0.06
30.25
0.06
0.00
0.06
30.50
0.06
0.00
0.06
30.75
0.06
0.00
0.06
31.00
0.06
0.00
0.06
31.25
0.06
0.00
0.06
31.50
0.06
0.00
0.06
31.75
0.06
0.00
0.06
32.00
0.06
0.00
0.06
32.25
0.06
0.00
0.06
32.50
0.06
0.00
0.06
32.75
0.06
0.00
0.06
33.00
0.06
0.00
0.06
33.25
0.06
0.00
0.06
33.50
0.06
0.00
0.06
33.75
0.06
0.00
0.06
34.00
0.06
0.00
0.06
34.25
0.06
0.00
0.06
34.50
0.06
0.00
0.06
34.75
0.06
0.00
0.06
35.00
0.06
0.00
0.06
35.25
0.06
0.00
0.06
35.50
0.06
0.00
0.06
35.75
0.06
0.00
0.06
36.00
0.06
0.00
0.06
36.25
0.06
0.00
0.06
36.50
0.06
0.00
0.06
36.75
0.06
0.00
0.06
37.00
0.06
0.00
0.06
37.25
0.06
0.00
0.06
37.50
0.06
0.00
0.06
37.75
0.06
0.00
0.06
38.00
0.06
0.00
0.06
38.25
0.06
0.00
0.06
38.50
0.06
0.00
0.06
38.75
0.06
0.00
0.06
39.00
0.06
0.00
0.06
39.25
0.06
0.00
0.06
39.50
0.05
0.00
0.05
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
39.75
0.05
0.00
0.05
40.00
0.05
0.00
0.05
40.25
0.05
0.00
0.05
40.50
0.05
0.00
0.05
40.75
0.05
0.00
0.05
41.00
0.05
0.00
0.05
41.25
0.05
0.00
0.05
41.50
0.05
0.00
0.05
41.75
0.05
0.00
0.05
42.00
0.05
0.00
0.05
42.25
0.05
0.00
0.05
42.50
0.05
0.00
0.05
42.75
0.05
0.00
0.05
43.00
0.05
0.00
0.05
43.25
0.05
0.00
0.05
43.50
0.05
0.00
0.05
43.75
0.05
0.00
0.05
44.00
0.05
0.00
0.05
44.25
0.05
0.00
0.05
44.50
0.05
0.00
0.05
44.75
0.05
0.00
0.05
45.00
0.05
0.00
0.05
45.25
0.05
0.00
0.05
45.50
0.05
0.00
0.05
45.75
0.05
0.00
0.05
46.00
0.05
0.00
0.05
46.25
0.05
0.00
0.05
46.50
0.05
0.00
0.05
46.75
0.05
0.00
0.05
47.00
0.05
0.00
0.05
47.25
0.05
0.00
0.05
47.50
0.05
0.00
0.05
47.75
0.05
0.00
0.05
48.00
0.05
0.00
0.05
48.25
0.05
0.00
0.05
48.50
0.05
0.00
0.05
48.75
0.05
0.00
0.05
49.00
0.04
0.00
0.04
49.25
0.04
0.00
0.04
49.50
0.04
0.00
0.04
49.75
0.04
0.00
0.04
50.00
0.04
0.00
0.04
50.25
0.04
0.00
0.04
50.50
0.04
0.00
0.04
50.75
0.04
0.00
0.04
51.00
0.04
0.00
0.04
51.25
0.04
0.00
0.04
51.50
0.04
0.00
0.04
51.75
0.04
0.00
0.04
52.00
0.04
0.00
0.04
52.25
0.04
0.00
0.04
52.50
0.04
0.00
0.04
52.75
0.04
0.00
0.04

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 39
Hydrograph for Link 1 L: Post -development DA-1 (continued)
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
53.00
0.04
0.00
0.04
53.25
0.04
0.00
0.04
53.50
0.04
0.00
0.04
53.75
0.04
0.00
0.04
54.00
0.04
0.00
0.04
54.25
0.04
0.00
0.04
54.50
0.04
0.00
0.04
54.75
0.04
0.00
0.04
55.00
0.04
0.00
0.04
55.25
0.04
0.00
0.04
55.50
0.04
0.00
0.04
55.75
0.04
0.00
0.04
56.00
0.04
0.00
0.04
56.25
0.04
0.00
0.04
56.50
0.04
0.00
0.04
56.75
0.04
0.00
0.04
57.00
0.04
0.00
0.04
57.25
0.04
0.00
0.04
57.50
0.04
0.00
0.04
57.75
0.04
0.00
0.04
58.00
0.04
0.00
0.04
58.25
0.04
0.00
0.04
58.50
0.03
0.00
0.03
58.75
0.03
0.00
0.03
59.00
0.03
0.00
0.03
59.25
0.03
0.00
0.03
59.50
0.03
0.00
0.03
59.75
0.03
0.00
0.03
60.00
0.03
0.00
0.03
60.25
0.03
0.00
0.03
60.50
0.03
0.00
0.03
60.75
0.03
0.00
0.03
61.00
0.03
0.00
0.03
61.25
0.03
0.00
0.03
61.50
0.03
0.00
0.03
61.75
0.03
0.00
0.03
62.00
0.03
0.00
0.03
62.25
0.03
0.00
0.03
62.50
0.03
0.00
0.03
62.75
0.03
0.00
0.03
63.00
0.03
0.00
0.03
63.25
0.03
0.00
0.03
63.50
0.03
0.00
0.03
63.75
0.03
0.00
0.03
64.00
0.03
0.00
0.03
64.25
0.03
0.00
0.03
64.50
0.03
0.00
0.03
64.75
0.03
0.00
0.03
65.00
0.03
0.00
0.03
65.25
0.03
0.00
0.03
65.50
0.03
0.00
0.03
65.75
0.03
0.00
0.03
66.00
0.03
0.00
0.03
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
66.25
0.03
0.00
0.03
66.50
0.03
0.00
0.03
66.75
0.03
0.00
0.03
67.00
0.03
0.00
0.03
67.25
0.03
0.00
0.03
67.50
0.03
0.00
0.03
67.75
0.03
0.00
0.03
68.00
0.03
0.00
0.03
68.25
0.02
0.00
0.02
68.50
0.02
0.00
0.02
68.75
0.02
0.00
0.02
69.00
0.02
0.00
0.02
69.25
0.02
0.00
0.02
69.50
0.02
0.00
0.02
69.75
0.02
0.00
0.02
70.00
0.02
0.00
0.02
70.25
0.02
0.00
0.02
70.50
0.02
0.00
0.02
70.75
0.02
0.00
0.02
71.00
0.02
0.00
0.02
71.25
0.02
0.00
0.02
71.50
0.02
0.00
0.02
71.75
0.02
0.00
0.02
72.00
0.02
0.00
0.02
72.25
0.02
0.00
0.02
72.50
0.02
0.00
0.02
72.75
0.02
0.00
0.02
73.00
0.02
0.00
0.02
73.25
0.02
0.00
0.02
73.50
0.02
0.00
0.02
73.75
0.02
0.00
0.02
74.00
0.02
0.00
0.02
74.25
0.02
0.00
0.02
74.50
0.02
0.00
0.02
74.75
0.02
0.00
0.02
75.00
0.02
0.00
0.02
75.25
0.02
0.00
0.02
75.50
0.02
0.00
0.02
75.75
0.02
0.00
0.02
76.00
0.02
0.00
0.02
76.25
0.02
0.00
0.02
76.50
0.02
0.00
0.02
76.75
0.02
0.00
0.02
77.00
0.02
0.00
0.02
77.25
0.02
0.00
0.02
77.50
0.02
0.00
0.02
77.75
0.01
0.00
0.01
78.00
0.01
0.00
0.01
78.25
0.01
0.00
0.01
78.50
0.01
0.00
0.01
78.75
0.01
0.00
0.01
79.00
0.01
0.00
0.01
79.25
0.01
0.00
0.01

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 40
Hydrograph for Link 1 L: Post -development DA-1 (continued)
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
79.50
0.01
0.00
0.01
79.75
0.01
0.00
0.01
80.00
0.01
0.00
0.01
80.25
0.01
0.00
0.01
80.50
0.01
0.00
0.01
80.75
0.01
0.00
0.01
81.00
0.01
0.00
0.01
81.25
0.01
0.00
0.01
81.50
0.01
0.00
0.01
81.75
0.01
0.00
0.01
82.00
0.01
0.00
0.01
82.25
0.01
0.00
0.01
82.50
0.01
0.00
0.01
82.75
0.01
0.00
0.01
83.00
0.01
0.00
0.01
83.25
0.01
0.00
0.01
83.50
0.01
0.00
0.01
83.75
0.01
0.00
0.01
84.00
0.01
0.00
0.01
84.25
0.01
0.00
0.01
84.50
0.01
0.00
0.01
84.75
0.01
0.00
0.01
85.00
0.01
0.00
0.01
85.25
0.01
0.00
0.01
85.50
0.01
0.00
0.01
85.75
0.01
0.00
0.01
86.00
0.01
0.00
0.01
86.25
0.01
0.00
0.01
86.50
0.01
0.00
0.01
86.75
0.01
0.00
0.01
87.00
0.01
0.00
0.01
87.25
0.01
0.00
0.01
87.50
0.01
0.00
0.01
87.75
0.01
0.00
0.01
88.00
0.01
0.00
0.01
88.25
0.01
0.00
0.01
88.50
0.00
0.00
0.00
88.75
0.00
0.00
0.00
89.00
0.00
0.00
0.00
89.25
0.00
0.00
0.00
89.50
0.00
0.00
0.00
89.75
0.00
0.00
0.00
90.00
0.00
0.00
0.00
90.25
0.00
0.00
0.00
90.50
0.00
0.00
0.00
90.75
0.00
0.00
0.00
91.00
0.00
0.00
0.00
91.25
0.00
0.00
0.00
91.50
0.00
0.00
0.00
91.75
0.00
0.00
0.00
92.00
0.00
0.00
0.00
92.25
0.00
0.00
0.00
92.50
0.00
0.00
0.00
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
92.75
0.00
0.00
0.00
93.00
0.00
0.00
0.00
93.25
0.00
0.00
0.00
93.50
0.00
0.00
0.00
93.75
0.00
0.00
0.00
94.00
0.00
0.00
0.00
94.25
0.00
0.00
0.00
94.50
0.00
0.00
0.00
94.75
0.00
0.00
0.00
95.00
0.00
0.00
0.00
95.25
0.00
0.00
0.00
95.50
0.00
0.00
0.00
95.75
0.00
0.00
0.00
96.00
0.00
0.00
0.00
96.25
0.00
0.00
0.00
96.50
0.00
0.00
0.00
96.75
0.00
0.00
0.00
97.00
0.00
0.00
0.00
97.25
0.00
0.00
0.00
97.50
0.00
0.00
0.00
97.75
0.00
0.00
0.00
98.00
0.00
0.00
0.00
98.25
0.00
0.00
0.00
98.50
0.00
0.00
0.00
98.75
0.00
0.00
0.00
99.00
0.00
0.00
0.00
99.25
0.00
0.00
0.00
99.50
0.00
0.00
0.00
99.75
0.00
0.00
0.00
100.00
0.00
0.00
0.00
100.25
0.00
0.00
0.00
100.50
0.00
0.00
0.00
100.75
0.00
0.00
0.00
101.00
0.00
0.00
0.00
101.25
0.00
0.00
0.00
101.50
0.00
0.00
0.00
101.75
0.00
0.00
0.00
102.00
0.00
0.00
0.00
102.25
0.00
0.00
0.00
102.50
0.00
0.00
0.00
102.75
0.00
0.00
0.00
103.00
0.00
0.00
0.00
103.25
0.00
0.00
0.00
103.50
0.00
0.00
0.00
103.75
0.00
0.00
0.00
104.00
0.00
0.00
0.00
104.25
0.00
0.00
0.00
104.50
0.00
0.00
0.00
104.75
0.00
0.00
0.00
105.00
0.00
0.00
0.00
105.25
0.00
0.00
0.00
105.50
0.00
0.00
0.00
105.75
0.00
0.00
0.00

Moss Buildings Stormwater Model -Rev Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 10/7/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 41
Hydrograph for Link 1 L: Post -development DA-1 (continued)
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
106.00
0.00
0.00
0.00
106.25
0.00
0.00
0.00
106.50
0.00
0.00
0.00
106.75
0.00
0.00
0.00
107.00
0.00
0.00
0.00
107.25
0.00
0.00
0.00
107.50
0.00
0.00
0.00
107.75
0.00
0.00
0.00
108.00
0.00
0.00
0.00
108.25
0.00
0.00
0.00
108.50
0.00
0.00
0.00
108.75
0.00
0.00
0.00
109.00
0.00
0.00
0.00
109.25
0.00
0.00
0.00
109.50
0.00
0.00
0.00
109.75
0.00
0.00
0.00
110.00
0.00
0.00
0.00
110.25
0.00
0.00
0.00
110.50
0.00
0.00
0.00
110.75
0.00
0.00
0.00
111.00
0.00
0.00
0.00
111.25
0.00
0.00
0.00
111.50
0.00
0.00
0.00
111.75
0.00
0.00
0.00
112.00
0.00
0.00
0.00
112.25
0.00
0.00
0.00
112.50
0.00
0.00
0.00
112.75
0.00
0.00
0.00
113.00
0.00
0.00
0.00
113.25
0.00
0.00
0.00
113.50
0.00
0.00
0.00
113.75
0.00
0.00
0.00
114.00
0.00
0.00
0.00
114.25
0.00
0.00
0.00
114.50
0.00
0.00
0.00
114.75
0.00
0.00
0.00
115.00
0.00
0.00
0.00
115.25
0.00
0.00
0.00
115.50
0.00
0.00
0.00
115.75
0.00
0.00
0.00
116.00
0.00
0.00
0.00
116.25
0.00
0.00
0.00
116.50
0.00
0.00
0.00
116.75
0.00
0.00
0.00
117.00
0.00
0.00
0.00
117.25
0.00
0.00
0.00
117.50
0.00
0.00
0.00
117.75
0.00
0.00
0.00
118.00
0.00
0.00
0.00
118.25
0.00
0.00
0.00
118.50
0.00
0.00
0.00
118.75
0.00
0.00
0.00
119.00
0.00
0.00
0.00
Time
Inflow
Elevation
Primary
(hours)
(cfs)
(feet)
(cfs)
119.25
0.00
0.00
0.00
119.50
0.00
0.00
0.00
119.75
0.00
0.00
0.00
120.00
0.00
0.00
0.00

APPENDIX J
DISCRETE NRCS CURVE NUMBER MODEL AND
SCM STAGE -STORAGE TABLE

6S
Post -development
Connected Impervious
Area to SCM DA-1 A
Subcat Reach on Link
7S
Post -development
Remainder of
Subcatchment to SCM
DA-1 A

Moss Buildings Stormwater Model
Prepared by FLM Engineering, Inc. Printed 8/9/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 2
Area Listing (selected nodes)
Area CN Description
(acres) (su bcatch me nt-n u mbe rs)
1.120 69 50-75% Grass cover, Fair, HSG B (7S)
2.660 98 Paved parking & roofs, Onsite (6S)
3.780 TOTAL AREA

Moss Buildings Stormwater Model Type 1124-hr 1-Inch Rainfall=1.00"
Prepared by FLM Engineering, Inc. Printed 8/9/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 3
Summary for Subcatchment 6S: Post -development Connected Impervious Area to SCM DA-1A
Runoff = 3.37 cfs @ 11.96 hrs, Volume= 0.175 af, Depth= 0.79"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 1-Inch Rainfall=1.00"
Area (ac) CN Description
2.660 98 Paved parking & roofs, Onsite
2.660 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
6.0 Direct Entry,
Subcatchment 6S: Post -development Connected Impervious Area to SCM DA-1A
Hydrograph
❑ Runoff
3.37 cfs
Type 11,24-hr 1-Inch
-- ------ ----- T
3 Rainfall=1.00"
unoff Area=2.660 ac
R'Rnoff Volume=0.175 of
- - - - - - - - - - + - - - - - - - - - -
2 Runoff �Depth=0.79"
LL
Tc=6.0 Min
CN=98
1
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Moss Buildings Stormwater Model Type 1124-hr 1-Inch Rainfall=1.00"
Prepared by FLM Engineering, Inc. Printed 8/9/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 4
Hydrograph for Subcatchment 6S: Post -development Connected Impervious Area to SCM DA-1A
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.03
0.00
0.00
5.00
0.06
0.00
0.01
7.50
0.11
0.02
0.02
10.00
0.18
0.06
0.07
12.50
0.73
0.54
0.27
15.00
0.85
0.65
0.08
17.50
0.91
0.71
0.05
20.00
0.95
0.74
0.03
22.50
0.98
0.77
0.03
25.00
1.00
0.79
0.00
27.50
1.00
0.79
0.00
30.00
1.00
0.79
0.00
32.50
1.00
0.79
0.00
35.00
1.00
0.79
0.00
37.50
1.00
0.79
0.00
40.00
1.00
0.79
0.00
42.50
1.00
0.79
0.00
45.00
1.00
0.79
0.00
47.50
1.00
0.79
0.00
50.00
1.00
0.79
0.00
52.50
1.00
0.79
0.00
55.00
1.00
0.79
0.00
57.50
1.00
0.79
0.00
60.00
1.00
0.79
0.00
62.50
1.00
0.79
0.00
65.00
1.00
0.79
0.00
67.50
1.00
0.79
0.00
70.00
1.00
0.79
0.00
72.50
1.00
0.79
0.00
75.00
1.00
0.79
0.00
77.50
1.00
0.79
0.00
80.00
1.00
0.79
0.00
82.50
1.00
0.79
0.00
85.00
1.00
0.79
0.00
87.50
1.00
0.79
0.00
90.00
1.00
0.79
0.00
92.50
1.00
0.79
0.00
95.00
1.00
0.79
0.00
97.50
1.00
0.79
0.00
100.00
1.00
0.79
0.00
102.50
1.00
0.79
0.00
105.00
1.00
0.79
0.00
107.50
1.00
0.79
0.00
110.00
1.00
0.79
0.00
112.50
1.00
0.79
0.00
115.00
1.00
0.79
0.00
117.50
1.00
0.79
0.00
120.00
1.00
0.79
0.00

Moss Buildings Stormwater Model Type 1124-hr 1-Inch Rainfall=1.00"
Prepared by FLM Engineering, Inc. Printed 8/9/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 5
Summary for Subcatchment 7S: Post -development Remainder of Subcatchment to SCM DA-1A
Runoff = 0.00 cfs @ 24.00 hrs, Volume= 0.000 af, Depth= 0.00"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 1-Inch Rainfall=1.00"
Area (ac) CN Description
1.120 69 50-75% Grass cover, Fair, HSG B
1.120 Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
6.0 Direct Entry,
Subcatchment 7S: Post -development Remainder of Subcatchment to SCM DA-1A
0.001
0.001
0.001
0.00c
0.00c
F 0
U
3 0
0
LL 0
0
0
Hydrograph
❑ Runoff
0.00 Cfs 1.
Type II 24-hr 1-Inch
Rainfall=1.00"
-- ------------r--R-un(Af-Are&l.120ac--
Runoff Volume=0.000 of
-------- Runoff Depth=0. 0"-
Tc=6.0 Min
CN=69
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)

Moss Buildings Stormwater Model Type 1124-hr 1-Inch Rainfall=1.00"
Prepared by FLM Engineering, Inc. Printed 8/9/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 6
Hydrograph for Subcatchment 7S: Post -development Remainder of Subcatchment to SCM DA-1A
Time Precip. Excess Runoff
(hours)
(inches)
(inches)
(cfs)
0.00
0.00
0.00
0.00
2.50
0.03
0.00
0.00
5.00
0.06
0.00
0.00
7.50
0.11
0.00
0.00
10.00
0.18
0.00
0.00
12.50
0.73
0.00
0.00
15.00
0.85
0.00
0.00
17.50
0.91
0.00
0.00
20.00
0.95
0.00
0.00
22.50
0.98
0.00
0.00
25.00
1.00
0.00
0.00
27.50
1.00
0.00
0.00
30.00
1.00
0.00
0.00
32.50
1.00
0.00
0.00
35.00
1.00
0.00
0.00
37.50
1.00
0.00
0.00
40.00
1.00
0.00
0.00
42.50
1.00
0.00
0.00
45.00
1.00
0.00
0.00
47.50
1.00
0.00
0.00
50.00
1.00
0.00
0.00
52.50
1.00
0.00
0.00
55.00
1.00
0.00
0.00
57.50
1.00
0.00
0.00
60.00
1.00
0.00
0.00
62.50
1.00
0.00
0.00
65.00
1.00
0.00
0.00
67.50
1.00
0.00
0.00
70.00
1.00
0.00
0.00
72.50
1.00
0.00
0.00
75.00
1.00
0.00
0.00
77.50
1.00
0.00
0.00
80.00
1.00
0.00
0.00
82.50
1.00
0.00
0.00
85.00
1.00
0.00
0.00
87.50
1.00
0.00
0.00
90.00
1.00
0.00
0.00
92.50
1.00
0.00
0.00
95.00
1.00
0.00
0.00
97.50
1.00
0.00
0.00
100.00
1.00
0.00
0.00
102.50
1.00
0.00
0.00
105.00
1.00
0.00
0.00
107.50
1.00
0.00
0.00
110.00
1.00
0.00
0.00
112.50
1.00
0.00
0.00
115.00
1.00
0.00
0.00
117.50
1.00
0.00
0.00
120.00
1.00
0.00
0.00

Moss Buildings Stormwater Model Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 8/9/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 1
Stage -Area -Storage for Pond 1P: WETLAND 1
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
296.00
4,842
0
296.02
4,943
102
296.04
5,044
204
296.06
5,145
306
296.08
5,246
407
296.10
5,347
509
296.12
5,373
628
296.14
5,400
747
296.16
5,426
865
296.18
5,453
984
296.20
5,479
1,102
296.22
5,506
1,221
296.24
5,532
1,340
296.26
5,558
1,458
296.28
5,585
1,577
296.30
5,611
1,696
296.32
5,638
1,814
296.34
5,664
1,933
296.36
5,690
2,051
296.38
5,717
2,170
296.40
5,743
2,289
296.42
5,770
2,407
296.44
5,796
2,526
296.46
5,823
2,645
296.48
5,849
2,763
296.50
5,875
2,882
296.52
5,902
3,000
296.54
5,928
3,119
296.56
5,955
3,238
296.58
5,981
3,356
296.60
6,008
3,475
296.62
6,034
3,594
296.64
6,060
3,712
296.66
6,087
3,831
296.68
6,113
3,950
296.70
6,140
4,068
296.72
6,166
4,187
296.74
6,193
4,305
296.76
6,219
4,424
296.78
6,245
4,543
296.80
6,272
4,661
296.82
6,298
4,780
296.84
6,325
4,899
296.86
6,351
5,017
296.88
6,377
5,136
296.90
6,404
5,254
296.92
6,430
5,373
296.94
6,457
5,492
296.96
6,483
5,610
296.98
6,510
5,729
297.00
6,536
5,848
297.02
6,563
5,992
297.04
6,590
6,135
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
297.06
6,616
6,279
297.08
6,643
6,423
297.10
6,670
6,567
297.12
6,697
6,711
297.14
6,723
6,855
297.16
6,750
6,999
297.18
6,777
7,143
297.20
6,804
7,287
297.22
6,831
7,431
297.24
6,857
7,574<-297.25
SURFACE
297.26
6,884
7,718
AREA AND STORAGE
297.28
6,911
7,862
INTERPOLATED AS
297.30
6,938
8,006
6,870 SF and 7,646 CF,
297.32
6,964
8,150
297.34
6,991
8,294
RESPECTIVELY
297.36
7,018
8,438
297.38
7,045
8,582
297.40
7,072
8,726
297.42
7,098
8,870
297.44
7,125
9,013
297.46
7,152
9,157
297.48
7,179
9,301
297.50
7,206
9,445
297.52
7,232
9,589
297.54
7,259
9,733
297.56
7,286
9,877
297.58
7,313
10,021
297.60
7,339
10,165
297.62
7,366
10,309
297.64
7,393
10,453
297.66
7,420
10,596
297.68
7,447
10,740
297.70
7,473
10,884
297.72
7,500
11,028
297.74
7,527
11,172
297.76
7,554
11,316
297.78
7,580
11,460
297.80
7,607
11,604
297.82
7,634
11,748
297.84
7,661
11,892
297.86
7,688
12,035
297.88
7,714
12,179
297.90
7,741
12,323
297.92
7,768
12,467
297.94
7,795
12,611
297.96
7,821
12,755
297.98
7,848
12,899
298.00
7,875
13,043
298.02
7,898
13,212
298.04
7,921
13,380
298.06
7,944
13,549
298.08
7,966
13,718
298.10
7,989
13,887

Moss Buildings Stormwater Model Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 8/9/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 2
Stage -Area -Storage for Pond 1P: WETLAND 1 (continued)
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
298.12
8,012
14,056
298.14
8,035
14,224
298.16
8,058
14,393
298.18
8,081
14,562
298.20
8,103
14,731
298.22
8,126
14,899
298.24
8,149
15,068
298.26
8,172
15,237
298.28
8,195
15,406
298.30
8,218
15,575
298.32
8,240
15,743
298.34
8,263
15,912
298.36
8,286
16,081
298.38
8,309
16,250
298.40
8,332
16,419
298.42
8,355
16,587
298.44
8,377
16,756
298.46
8,400
16,925
298.48
8,423
17,094
298.50
8,446
17,263
298.52
8,469
17,431
298.54
8,492
17,600
298.56
8,515
17,769
298.58
8,537
17,938
298.60
8,560
18,106
298.62
8,583
18,275
298.64
8,606
18,444
298.66
8,629
18,613
298.68
8,652
18,782
298.70
8,674
18,950
298.72
8,697
19,119
298.74
8,720
19,288
298.76
8,743
19,457
298.78
8,766
19,626
298.80
8,789
19,794
298.82
8,811
19,963
298.84
8,834
20,132
298.86
8,857
20,301
298.88
8,880
20,470
298.90
8,903
20,638
298.92
8,926
20,807
298.94
8,948
20,976
298.96
8,971
21,145
298.98
8,994
21,314
299.00
9,017
21,482
299.02
9,041
21,675
299.04
9,065
21,867
299.06
9,089
22,059
299.08
9,113
22,251
299.10
9,137
22,443
299.12
9,161
22,635
299.14
9,185
22,828
299.16
9,209
23,020
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
299.18
9,232
23,212
299.20
9,256
23,404
299.22
9,280
23,596
299.24
9,304
23,789
299.26
9,328
23,981
299.28
9,352
24,173
299.30
9,376
24,365
299.32
9,400
24,557
299.34
9,424
24,749
299.36
9,448
24,942
299.38
9,472
25,134
299.40
9,496
25,326
299.42
9,520
25,518
299.44
9,544
25,710
299.46
9,568
25,903
299.48
9,592
26,095
299.50
9,616
26,287
299.52
9,639
26,479
299.54
9,663
26,671
299.56
9,687
26,864
299.58
9,711
27,056
299.60
9,735
27,248
299.62
9,759
27,440
299.64
9,783
27,632
299.66
9,807
27,824
299.68
9,831
28,017
299.70
9,855
28,209
299.72
9,879
28,401
299.74
9,903
28,593
299.76
9,927
28,785
299.78
9,951
28,978
299.80
9,975
29,170
299.82
9,999
29,362
299.84
10,022
29,554
299.86
10,046
29,746
299.88
10,070
29,938
299.90
10,094
30,131
299.92
10,118
30,323
299.94
10,142
30,515
299.96
10,166
30,707
299.98
10,190
30,899
300.00
10,214
31,092
300.02
10,239
31,308
300.04
10,264
31,525
300.06
10,289
31,742
300.08
10,314
31,958
300.10
10,340
32,175
300.12
10,365
32,392
300.14
10,390
32,609
300.16
10,415
32,825
300.18
10,440
33,042
300.20
10,465
33,259
300.22
10,490
33,475

Moss Buildings Stormwater Model Type 11 24-hr 1-Year Rainfall=2.90"
Prepared by FLM Engineering, Inc. Printed 8/9/2021
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 3
Stage -Area -Storage for Pond 1P: WETLAND 1 (continued)
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
300.24
10,515
33,692
300.26
10,540
33,909
300.28
10,565
34,126
300.30
10,591
34,342
300.32
10,616
34,559
300.34
10,641
34,776
300.36
10,666
34,992
300.38
10,691
35,209
300.40
10,716
35,426
300.42
10,741
35,642
300.44
10,766
35,859
300.46
10,791
36,076
300.48
10,816
36,293
300.50
10,842
36,509
300.52
10,867
36,726
300.54
10,892
36,943
300.56
10,917
37,159
300.58
10,942
37,376
300.60
10,967
37,593
300.62
10,992
37,810
300.64
11,017
38,026
300.66
11,042
38,243
300.68
11,067
38,460
300.70
11,092
38,676
300.72
11,118
38,893
300.74
11,143
39,110
300.76
11,168
39,327
300.78
11,193
39,543
300.80
11,218
39,760
300.82
11,243
39,977
300.84
11,268
40,193
300.86
11,293
40,410
300.88
11,318
40,627
300.90
11,343
40,843
300.92
11,369
41,060
300.94
11,394
41,277
300.96
11,419
41,494
300.98
11,444
41,710
301.00
11,469
41,927
301.02
11,495
42,169
301.04
11,521
42,412
301.06
11,548
42,654
301.08
11,574
42,896
301.10
11,600
43,139
301.12
11,626
43,381
301.14
11,652
43,624
301.16
11,679
43,866
301.18
11,705
44,108
301.20
11,731
44,351
301.22
11,757
44,593
301.24
11,783
44,835
301.26
11,810
45,078
301.28
11,836
45,320
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
301.30
11,862
45,562
301.32
11,888
45,805
301.34
11,914
46,047
301.36
11,941
46,290
301.38
11,967
46,532
301.40
11,993
46,774
301.42
12,019
47,017
301.44
12,045
47,259
301.46
12,072
47,501
301.48
12,098
47,744
301.50
12,124
47,986
301.52
12,150
48,228
301.54
12,176
48,471
301.56
12,203
48,713
301.58
12,229
48,956
301.60
12,255
49,198
301.62
12,281
49,440
301.64
12,307
49,683
301.66
12,334
49,925
301.68
12,360
50,167
301.70
12,386
50,410
301.72
12,412
50,652
301.74
12,438
50,894
301.76
12,465
51,137
301.78
12,491
51,379
301.80
12,517
51,622
301.82
12,543
51,864
301.84
12,569
52,106
301.86
12,596
52,349
301.88
12,622
52,591
301.90
12,648
52,833
301.92
12,674
53,076
301.94
12,700
53,318
301.96
12,727
53,560
301.98
12,753
53,803
302.00
12,779
54,045

APPENDIX K
SCM SUPPLEMENTAL FORM

SUPPLEMENT-EZ COVER PAGE
ORMS LOvvw
!PROJECT INFORMATION
1 Project Name _ Moss Buildings
2 Project Area CaC) _ 4.64
3 Coastal Wetland Area (ac)
4 Surface Water Area (ac) 0.35
5 Is this proje.Ct.kgh or Low DensEty/7 High
6 Does this pra}eet use an off -site SCM? No
COMPLIANCE WITH 02H .1003(4)
7
Width of vegetated setbacks provided (feet) 44
8
Will the vegetated setback remain vegetated? Yes
9
If BUA is proposed in the setback, does it meet NCAC 021­1_1003 4)(c-d)? N/A
10
Is streambank stabilization proposed on this project? No
NUMBER AND TYPE OF SCMs:
11 Infiltration System
12 -Infiltration
Cell
13 Wet Pond
14 Stormwater Wetland 1
15 Permeable Pavement r
16
Sand Filter
17
Rainwater Harvesting (RWH)
18
Green Roof
19
Level Spreader -Filter Strip LS-FS)
20
Disconnected Impervious Surface (DIS)
21
Treatment Swale
22
Dry Pond
23
StormFilter
24
Silva Cell
Bayfilter _
Filterra
25
26
FORMS LOADED
DESIGNER CERTIFICATION
27 IName and Title:
28 Organization:
29 Street address:
30 ICity, State, Zip:
31 1 Phone number(s):
1 32 [Email:
Jon Frazier, PE /
FILM Engineering, Inc.
_ PO Box 91727
Raleigh, NC 27675
919,610.1051
Certification Statement:
I certify, under penalty of law that this Supplement-EZ form and all supporting information were prepared under my direction or supervision; that
the information provided in the forth is, to the best of my knowledge and belief, true, accurate, and complete; and that the engineering plans,
specifications. operation and maintenance agreements and other supporting information are consistent with the information provided here.
'''GAF{pC `��•
_ 5
' `rOti •,,EGiNa <¢�
'•• g7HAN O
'+,rrEiiEE'.
Seal
Signature signer
Date
lol-7

DRAINAGE AREAS
1 Is this a high density project? Yes
2 If so, number of drainage areas/SCMs 1
3 Does this project have low density areas? No
4 If so, nGfnt]Hr of l6w density dr&ha a areas
Is all/part of this project subject to previous rule
5 aversions? No
FORMS LOADED
DRAINAGE AREA INFORMATION
Entire Site
1
4
1 Type of SCM
Wetland
5
Total drainage areas R)
288.966
164446
6
Onsite drainage area (sq ft)
202.451
162336
7
Offsite drainage area (sq ft)
86.515
2110
8
_
Total BUA in project (sq. ft)
146514 sf
115978 sf
9permitting)
New BUA on subdivided lots (subject to
s ft
10permitting)
New BUA not on subdivided lots (subject to
s
146514 sf
115978 sf
11
Offsite BUA (sq ft)
29577 sf
2110 sf
12
Breakdown of new BUA not on subdivided lots:
Parking (sq ft
86150 sf
82993 sf
-
Sidewalk (sq ft
13396 sf
10785 sf
Roof (sq ft)
22200 sf
22200 sf
Roadway sq ft
24768 sf
Future.(sq ft)
Other, please specify in the comment box
below (sq ft
13
New infiltrating permeable pavement on
subdivided lots sq ft
14
New infiltrating permeable pavement not on
subdivided lots (sq ft
15permitting)
Existing BUA that will remain (not subject to
s ft)
22283 sf
16
Existing BUA that is already ermitted (sq ft
17
Existing BUA that will be removed (sq ft)
8489 sf
8489 sf
18
Percent BUA
51%
70%
19
Design storm (inches)
1.0 in
20
Desi n votume of SCM (cu ft
7751 cf
21 'Calcu a ion me od or esign volume
HydroCAU
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
22 drainage area(s):
10,785 sf of sidewalk BUA shown in the Drainage Area 1 column includes
the 2,110 sf of off -site BUA.

STORMWATER WETLAND
1 Dray ge area number
DA-1A
2 Minimium recluTEd treatment volume cu ff
is�ad
'E
3 Is the SCM 8reed to treat the SW from all surfaces at build -out?
Yes
4 Is the 850 located away from contaminated soils?
Yes
5, What are the side Sin es of the SCM (H:V.1?
31
6'Does tha SibA have retaining walls, gabion walls or other
No
,er,<jneered side slopde_ _
l
Are the inlets outlets. and receiving stream protected from erosion
Yes
'. (1 D-year starm )7
I
8 18 there an overflow or bypass for inflow vdlume in excess dF•1h8:
Yes
dasign.valurre-
_
�9! W_ et is the method for dawaW. ng the SW for maintenance?
FUMF (Tx6fefre54
1011E 9pprioghte;yj me 13CM be cleaned out after construction?
Yes
11 [Does the maintenance access comply with General MDC BI_),
Yes
12 : Does the drainage easement comply with General MDC (9)?
Yes
13 If the SCM is on a single family lot, does (will?) the plat comply with
Yes
General MDC (10)?
_
14 Is there an On 0&MA2reement that 132mplies with General MDC 11)?
Yes
15 Is there an O&M Plan that complies with General MDC (12)?
Yes
16 Does the SCM folliew the device speCdic MDC?
Yes
17 Was the SGM designed by an NC licensed r-afesslonal?
Yes
R17MU69WATFR UFF'tt Vllo AMC FRnY mN -WU
18 Design volume of SCM (¢u ft) 7751
19 Are the nlet(s) and outlet located in a manner that avoids short-
circuiting?
Yes
20
Are.berns or baffles pmvkW to fin rWA ll1e flow ptltn7
I Yes
21
Does the orifice drawdown from below the top surface of the
permanent oh
Yes
22
Does e wetTand minimize impacts to the receiving channel From the
1- r, 24[h-hr storm? Yes
Is a trash rack or other device Provided to protect the outlets stem? Yes
23
}'�6Y7S10hi peak attenuation above temporary pool (if applicable)
(frrt$Fi I
29821
_
.,IV, urli temporary pool (top Urtha.1wnwirmy inundali9n zCrle} f
29725
Eleyallbn, perltisari nl pDd{ { 60 of the shallow water zona. {fms1
296.00
Elevation, bottom of shallow water zone fma4
295,25
Elevation, bottom of forebay deep pool at deepest point (at forebay
entrance fmsl
293.00
Elevation, bottom of forebay deep pool at shallowest point (at
294 00
forebay exit) (fmsl)
Elevation. bottom of.riOn-Forebay deep pwl at di§epasj point fmsq
284.p0
i7he.r
31
Area, total surface area of the SW wetland at temporary pool elev 6,978,00
1(sq ft)
32'Areaea,
temporary inuF datlon zone at tem prar pppl elev. s ft) Z T1App
Ar. shallow water zone at Iemppmiy pml elev Isq ft) 3134,00
33
34
Area;T= attgm m of elev s f1) _ 99600
Area, non-forebay deep fool at temporary pool elev (sq ft) 734 00
Percent area provided, temporary inundation zone (should be 30- 30%
45
35
36
37
Percent area provided shallow water zone (should be 35-05%) 45%
Percent area provided, deep papa (fora . ) (should be 10-15%) 159I+.
36
391
Percent area provided, deep pgot (non-foreb8y) (Sr1011tr,( tie 5-15%•) _ T T%s
epthsmW Olrfiet
401 Paak depth a6pve temporary inundation zone ginGhes)
12 in
_attenuation
Temporary inundation zone depth (tamporary.pool to permanent
41
Imohee
15 in
42
Shallow water zone depth (permanent pool to bottom of wetland)
9 in
(inches)
43 Depth, forebay at entrance (permanent pool to bottom of forebay
36 in
entrance) (inches)
44;Deplh, forebay at exit (permanent pool to bottom of forebay exit)
24 in
. (inches
45 Depth, non-forebay deep pools (permanent pool to deep pool
24 in
bottom] (inches)
46; If there is an orifiar, diameter inches 1
2 in
47 If there is a weir, weir height (inches)
48! tf there is d *Air. weir tenth pnches)
4916rawdown time for the temporary pool (days)
2.3
Wetland 1 8:51 AM 10/7/2021

STORMWATER WETLAND
soil m d Pfanl s
51 Soil amendment deoth (inches) _
51 Has a soil amendment specification been provided?
52 Has a landscaping plan that meets 5W Welland MD(; (12) been
provided?
53 Number of plants per 200 square Feet M in the shallow water zone54 :
Does the temporary inundation zone planting comply with SIN
Welland MDC (14)?
55 Are the dam structure and temporary fill slopes planted in non -
clumping turfgrass?
56 Will atlai;s tre planted in the wetland?
57 P!ease ise 11i,s space Ia ❑rpvid5 any add,tional rnformati0n about
sty , , " .�,- wetland(s)
arrflce diameter Is 1.F (rour ded up in Line 46 above to 2").
Tf;t number of plants per 200 SF in the shaftow water zone shaft be 50
(note.: here due to input error in Line 53 above).
Yes
Yes
Yes
No
Wetland 4 8:51 AM 10/7/2021

APPENDIX L
DRAW DOWN CALCULATIONS

Orifice Drawdown Calculations
Volume provided at 15"
Orifice Equation
Outlet Diameter 1.5 in
Cd = 0.6
Ho/3= 0.42 ft
9 = 32.2 ft / sect
A = 0.012 sf
Q = 0.038 cfs
7751 ft 3
202511.2829 seconds
Drawdown Time 56.3 hours

APPENDIX M
RIP RAP ENERGY DISSIPATOR CALCULATIONS

DESIGN OF RIPRAP OUTLET PROTECTION WORKSHEET
Project
Moss Buildings Date
Project No.
19060 Designer
Outlet ID
FES-19
Outlet flowrate
0.42 cfs
Pipe diameter
12 inches
Number of pipes
1
Pipe separation
feet
Outlet pipe slope
4.17 percent
Figure 8.06.b.1
25
20
u
y 15
w
0 10
5 — o ne
0 F— I t��
0 2 4 6 8 10
Pipe diameter (ft)
Zone from graph above =
1
Outlet pipe diameter
12 in.
Length =
4.0 ft.
Outlet flowrate
0.4 cfs
Width =
3.0 ft.
Outlet velocity
0.5 ft/sec
Stone diameter =
3 in.
Material =
Class A
Thickness =
9 in.
Zone
Material
Diameter
Thickness
Length
Width
1
Class A
3
9
4 x D(o)
3 x D(o)
2
Class B
6
22
6 x D(o)
3 x D(o)
3
Class I
13
22
8 x D(o)
3 x D(o)
4
Class I
13
22
8 x D(o)
3 x D(o)
5
Class II
23
27
10 x D(o)
3 x D(o)
6
Class II
23
1 27
10 x D(o)
3 x D(o)
7
Special study required
1. Calculations based on NY DOT method - Pages 8.06.05 through 8.06.06 in NC Erosion Control Manual
2. Outlet velocity based on full -flow velocity
Moss Bldgs_RipRap Outlet Pipe Protection.xlsx
12/16/2020

DESIGN OF RIPRAP OUTLET PROTECTION WORKSHEET
Project
Moss Buildings Date
Project No.
19060 Designer
Outlet ID
FES-20
Outlet flowrate
9.73 cfs
Pipe diameter
24 inches
Number of pipes
1
Pipe separation
feet
Outlet pipe slope
0.55 percent
Figure 8.06.b.1
25
20
u
y 15
w
0 10
5 — o ne
0
0 2 4 6 8 10
Pipe diameter (ft)
Zone from graph above =
1
Outlet pipe diameter
24 in.
Length =
8.0 ft.
Outlet flowrate
9.7 cfs
Width =
6.0 ft.
Outlet velocity
3.1 ft/sec
Stone diameter =
3 in.
Material =
Class A
Thickness =
9 in.
Zone
Material
Diameter
Thickness
Length
Width
1
Class A
3
9
4 x D(o)
3 x D(o)
2
Class B
6
22
6 x D(o)
3 x D(o)
3
Class I
13
22
8 x D(o)
3 x D(o)
4
Class I
13
22
8 x D(o)
3 x D(o)
5
Class II
23
27
10 x D(o)
3 x D(o)
6
Class II
23
1 27
10 x D(o)
3 x D(o)
7
Special study required
1. Calculations based on NY DOT method - Pages 8.06.05 through 8.06.06 in NC Erosion Control Manual
2. Outlet velocity based on full -flow velocity
Moss Bldgs_RipRap Outlet Pipe Protection.xlsx
12/16/2020

DESIGN OF RIPRAP OUTLET PROTECTION WORKSHEET
Project
Moss Buildings Date
Project No.
19060 Designer
Outlet ID
FES-21
Outlet flowrate
10.46 cfs
Pipe diameter
24 inches
Number of pipes
1
Pipe separation
feet
Outlet pipe slope
2.38 percent
Figure 8.06.b.1
25
20
u
y 15
w
0 10
5 — o ne
0
0 2 4 6 8 10
Pipe diameter (ft)
Zone from graph above =
1
Outlet pipe diameter
24 in.
Length =
8.0 ft.
Outlet flowrate
10.5 cfs
Width =
6.0 ft.
Outlet velocity
3.3 ft/sec
Stone diameter =
3 in.
Material =
Class A
Thickness =
9 in.
Zone
Material
Diameter
Thickness
Length
Width
1
Class A
3
9
4 x D(o)
3 x D(o)
2
Class B
6
22
6 x D(o)
3 x D(o)
3
Class I
13
22
8 x D(o)
3 x D(o)
4
Class I
13
22
8 x D(o)
3 x D(o)
5
Class II
23
27
10 x D(o)
3 x D(o)
6
Class II
23
1 27
10 x D(o)
3 x D(o)
7
Special study required
1. Calculations based on NY DOT method - Pages 8.06.05 through 8.06.06 in NC Erosion Control Manual
2. Outlet velocity based on full -flow velocity
Moss Bldgs_RipRap Outlet Pipe Protection.xlsx
12/16/2020

DESIGN OF RIPRAP OUTLET PROTECTION WORKSHEET
Project
Moss Buildings Date
Project No.
19060 Designer
Outlet ID
FES-21
Outlet flowrate
10.37 cfs
Pipe diameter
24 inches
Number of pipes
1
Pipe separation
feet
Outlet pipe slope
1 percent
Figure 8.06.b.1
25
20
u
y 15
w
0 10
5 — o ne
0
0 2 4 6 8 10
Pipe diameter (ft)
Zone from graph above =
1
Outlet pipe diameter
24 in.
Length =
8.0 ft.
Outlet flowrate
10.4 cfs
Width =
6.0 ft.
Outlet velocity
3.3 ft/sec
Stone diameter =
3 in.
Material =
Class A
Thickness =
9 in.
Zone
Material
Diameter
Thickness
Length
Width
1
Class A
3
9
4 x D(o)
3 x D(o)
2
Class B
6
22
6 x D(o)
3 x D(o)
3
Class I
13
22
8 x D(o)
3 x D(o)
4
Class I
13
22
8 x D(o)
3 x D(o)
5
Class II
23
27
10 x D(o)
3 x D(o)
6
Class II
23
1 27
10 x D(o)
3 x D(o)
7
Special study required
1. Calculations based on NY DOT method - Pages 8.06.05 through 8.06.06 in NC Erosion Control Manual
2. Outlet velocity based on full -flow velocity
Moss Bldgs_RipRap Outlet Pipe Protection.xlsx
12/16/2020

APPENDIX N
OPERATION & MAINTENANCE AGREEMENT

Operation & Maintenance Agreement
Project Name:
Project Location:
Moss Buildings
1075 S Main St, Louisburg, NC
Cover Page
Maintenance records shall be kept on the following BMP(s). This maintenance record shall be kept in a log in a known set
location. Any deficient BMP elements noted in the inspection will be corrected, repaired, or replaced immediately. These
deficiencies can affect the integrity of structures, safety of the public, and the pollutant removal efficiency of the BMP(s).
The BMP(s) on this project include (check all that apply & cc
Bioretention Cell
Quantity:
Dry Detention Basin
Quantity:
Grassed Swale
Quantity:
Green Roof
Quantity:
Infiltration Basin
Quantity:
Infiltration Trench
Quantity:
Level SpreaderNFS
Quantity:
Permeable Pavement
Quantity:
Proprietary System
Quantity:
Rainwater Harvesting
Quantity:
Sand Filter
Quantity:
Stormwater Wetland
Quantity:
Wet Detention Basin
Quantity:
Disconnected Impervious Area
Present:
User Defined BMP
Present:
�rres onai
1
0
No
No
ig O&M tables will
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
De aaaea automat
I Northwest side of site I
I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed
for each BMP above, and attached O&M tables. I agree to notify NCDENR of any problems with the system or prior to any
changes to the system or responsible party.
* Responsible Party:
Title & Organization:
Street address:
City, state, zip:
Phone number(s):
Email:
Alvin Moss
Manager, Moss Rentals LLC
333 S White St
Wake Forest, NC 27587
919.556.3148
[e-mail]
Signature:—L— Date: G
I,yyaen a Notary Public for the State of Np(o
County of ��,y�i✓ -,do hearby certify that My
personally appeared before me this ��}- day of _ and
acknowledge the due execution of th Operations and Main enance Agreement .
Witness my hand and official sea
31IQ-laoa4
sTOWZ My commission expires 12/17/2020
Version 1.4 O&M mallual Page 1 of 3

Stormwater Wetland Maintenance Requirements
Important maintenance procedures:
_ Immediately following construction of the stormwater wetland, bi-weekly inspections will be conducted and
wetland plants will be watered bi-weekly until vegetation becomes established (commonly six weeks).
_ No portion of the stormwater wetland will be fertilized after the first initial fertilization that is required to establish
the wetland plants.
- Stable groundcover will be maintained in the drainage area to reduce the sediment load to the wetland.
- Once a year, a dam safety expert should inspect the embankment.
After the stormwater wetland is established, it shall be inspected monthly and within 24 hours after every storm event greater
than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance will be kept in a known set
location and will be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately
BMP element:
Potentialproblem:
How I will remediate theproblem:
Entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the BMP
Areas of bare soil and/or
Regrade the soil if necessary to remove the gully, and then plant a
erosive gullies have formed.
ground cover and water until it is established. Provide lime and a one-
time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of approximately six inches
long.
Forebay
Sediment has accumulated in
Search for the source of the sediment and remedy the problem if
the forebay to a depth that
possible. Remove the sediment and dispose of it in a location where it
inhibits the forebay from
will not cause impacts to streams or the BMP.
Erosion has occurred.
Provide additional erosion protection such as reinforced turf matting or
riprap if needed to prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by hand. If a pesticide is used, wipe it
on the plants rather than spraying.
The inlet device
The pipe is clogged
Unclog the pipe. Dispose of the sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to smooth it over and provide erosion
swale.
control devices such as reinforced turf matting or riprap to avoid future
problems with erosion.
Stone verge is clogged or
Remove sediment and replace with clean stone.
covered in sediment (if
applicable).
STORM-EZ 12/17/2020
Version 1.4 O&M Manual Page 2 of 3

Stormwater Wetland Maintenance Requirements Continued
Deep pool, shallow water
Algal growth covers over 50%
Consult a professional to remove and control the algal growth.
and shallow land areas
of the deep pool and shallow
water areas.
Cattails, phragmites or other
Remove invasives by physical removal or by wiping them with
invasive plants cover 50% of
pesticide (do not spray) — consult a professional.
the deep pool and shallow
Shallow land remains flooded
Unclog the outlet device immediately.
more than 5 days after a
storm event.
Plants are dead, diseased or
Determine the source of the problem: soils, hydrology, disease, etc.
dying.
Remedy the problem and replace plants. Provide a one-time fertilizer
application to establish the ground cover if necessary.
Best professional practices
Prune according to best professional practices.
show that pruning is needed
to maintain optimal plant
Sediment has accumulated
Search for the source of the sediment and remedy the problem if
and reduced the depth to 75%
possible. Remove the sediment and dispose of it in a location where it
of the original design depth of
will not cause impacts to streams or the BMP.
Embankment
A tree has started to grow on
Consult a dam safety specialist to remove the tree.
the embankment.
An annual inspection by
Make all needed repairs.
appropriate professional
shows that the embankment
Evidence of muskrat or
Consult a professional to remove muskrats or beavers,
beaver activity is present.
Micropool
Sediment has accumulated
Search for the source of the sediment and remedy the problem if
and reduced the depth to 75%
possible. Remove the sediment and dispose of it in a location where it
of the original design depth.
will not cause impacts to streams or the BMP.
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Department of Environment and Natural
damage have occurred at the
Resources Regional Office.
outlet.
STORM-EZ 12/17/2020
Version 1.4 O&M Manual Page 3 of 3

APPENDIX O
TAR-PAMLICO ACCOUNTING TOOL

Tar -Pamlico Stormwater Rule 15A NCAC 28 .0258
Last Modified 12/17/2020
Piedmont of the Tar -Pamlico River Basin:
Includes Oxford, Henderson, Rocky Mount and Tarboro as well as Franklin, Nash and Edgecome Counties
Total Nitrogen and Total Phosphorus Loading Calculation Worksheet (Automated)
Project Name: Moss Buildings
Date: 1211712020
By: Jon Frazier
Checked By:
Directions (same for pre -development and post -development tables):
> Enter the acres of each type of land cover in the green boxes. The spreadsheet will calculate all of
the values in light blue.
> Compare total areas of development in pre- and post- tables for consistency (bottom of column (2)), and also for consistency
with
the site plans. If all of these values are not the same, there is an error that must be corrected.
> Unless drainage onto the development from offsite is diverted around or through the site, offsite catchment
area draining in must be
included in the acreage values and treated.
Pre -development.
(t)
(2)
(3)
(4)
(5)
(6)
(7)
Type of Land Cover
Area
S.M. Formula
Average EMC
Column
Average EMC
Column
acres
0.46 + 8.3I
of TN rn L
2 3 4
of TP m /L
2 3 6
Transportation impervious
0.67
1.73
2.60
3.02
0.19
0.22
Roof impervious
0.04
1.73
1.95
0.14
0.11
0.01
Managed pervious
(law n/landscaped)
3.93
1.73
1.42
9.66
0.28
1.91
Managed pervious
(cropland)
0.00
1.73
4.23
0.00
1.23
0.00
Managed pervious
(pasture)
0.00
1.73
2.04
0.00
0.62
0.00
Wooded pervious
0.00
1.73
0.94
0.00
0.14
0.00
TN Loading'
TP Loading2.13
Fraction Imperviaus{T) =
0.15
12.81
(lb/yr) =
(lb/yr) =
TN Exp. Coeff.
TP Exp. Coeff.
Total Area of Development =
4.64
2.76
0.46
(lb/ac/yr) _
(lb/ac/yr) _
Post -development:
(1)
(2)
(3);
(4)
(5)
(6)
(7)
Type of Land Cover
Area
S.M. Formula
Average EMC
Column
Average EMC
Column
acres
0.46 + 8.3I
of TN ma/L
2 3 4
of TP ma/L
2 3 6
Transportation impervious
2.18
5.28
2.60
29.91
0.19
2.19
Roof impervious'
0.51
5.28
1.95
5.25
0.11
0.30
Managed pervious
1.95
5.28
1.42
14.61
0.28
2.88
Wooded Pervious
0.00
5.28
0.95
0.00
0.14
0.00
TN Loading
TP Loading
Fraction Impervious�(I) =
0.58
49.78
5.36
(lblyr)
(lb/yr) _
TN Exp. Coeff.
TP Exp. Coeff.
Total Area of Development =
4.64
10.73
1.16
(lb/ae/yr) _
(lb/ac/yr) _
Note: The nutrient loading goals are 4.0 lb/ac/yr for TN and 0.4 lb/ac/yr for TP. If the post -development nutrient
loading is below these levels, then no BMP is necessary. Otherwise, the next worksheet calculates
post -development IN and TP loadings after BMPs are installed.

Tar -Pamlico Stormwater Rule 15A NCAC 2B .0258
Last Modified 5/23/03
Piedmont of the Tar -Pamlico River Basin:
Includes Oxford, Henderson, Rocky Mount and Tarboro as well as Franklin, Nash and Edgecome Counties
BMP Removal Calculation Worksheet (Automated)
Project Name: Moss Buildings
Date: 1211712020
By: Jon Frazier Checked By:
Jon Frazier
Directions:
> It may be advantageous to split the development into separate catchments to be handled by separate BMPs. The tables below allow
the development to be split into as many as three catchments, and can be copied for greater than three.
NOTE: Unless runoff flowing
onto the development from offsite is routed separately around or through the site, the offsite catchment
area draining in must be
included in the acreage values of the appropriate land use(s) and treated.
> Above each table: Enter the catchment acreage in the top green blank. Based on a comparison of the
post -development TN and TP
export coefficients you calculated above to the rule requirements of 4.0 lb/ac/yr TN and 0.4 lb/ac/yr TP,
select BMP(s) from the list for
treating the catchment runoff. Enter the chosen BMP(s) nutrient removal rates in the green blanks. If
more than one BMP is to be
used in series, the combined removal rates will be calculated automatically in the blue blanks.
> Catchment Tables: Enter the acres of each type of land cover in the green boxes. The spreadsheet will calculate all of the light blue
boxes. NOTE: Compare the Total Catchment Acreage for the Development (final table) to the value you established in the pre-BMP
worksheet tables, and also to the site plans, for consistency. All of these values need to be the same
TN TP
Design Standard
BMP Wet Detention Pond 25 40
NC BMP Manual
Nutrient Stormwater Wetland 40 35
NC BMP Manual
Removal Sand Filter 35 45
NC BMP Manual
Rates Bioretention 35 45
NC BMP Manual
Grass Swale 20 20
NC BMP Manual
Vegetated Filter Strip w/
20 35
Level Spreader
NC BMP Manual
Dry Detention 10 10
NC BMP Manual
Catchment 1:
Total acreage of catchment 1 = ac
First BMP's TN removal rate = % First BMP's TP removal rate =
%
Second BMP's TN removal rate = % Second BMP's TP removal rate =
%
Third BMP's TN removal rate = % Third BMP's TP removal rate =
%
TOTAL TN REMOVAL RATE = % TOTAL TP REMOVAL RATE =
35 %
(1)
(2)
(3)
(4) (5)
(6)
(7)
Type of Land Cover
Catchment
S.M. Formula
Average EMC of Column
Average EMC of
Column
Acreage
0.46+8.3
TN m /L 2 3* 4
TP m
2 3`* 6
Transportation impervious
2.10
6.27
2.60 34.26
0.19
2.50
Roof impervious
51
6.27
1.95 6.24
0.11
0.35
Managed pervious
12
io
6.27
1.42 9.98
0.28
1.97
Wooded pervious
00
6.27
0.94 0.00
0.14
0.00
Area taken up by BMP00
6.27
1.95 0.00
0.11
0.00
Fraction Impervious (I) =
0.70
Pre-BMP TN 50.48
Pre-BMP TP
4.82
Load (lb/yr) =
Load (lb/yr) _
Total Area of Development =
3.73
Pee-BMP TN
13.53
Pre-BMP TP
1.29
Export (lbfac/yr)
Export (lb/ac/yr) _'
Post-BMP TN
Post-BMP TP
30.29
3.14
Load, (ib/yr),=,
Load (lb/yr) _
Post-BMP TN
8.12
Post-BMP TP
0.84
Export (Ibfac/yr) _
Export (Ib/ac/yr) =

Tar -Pamlico Stormwater Rule 15A NCAC 2B .0258
Last Modified 5/23/03
Catchment 2:
Total acreage of catchment 2 = 0.91 ac
First BMP's TN removal rate = % First BMP's TP removal rate = %
Second BMP's TN removal rate = % Second BMP's TP removal rate = %
Third BMP's TN removal rate = % Third BMP's TP removal rate = %
TOTAL TN REMOVAL RATE = 0 % TOTAL TP REMOVAL RATE = 0 %
(1)
(2)
(3),
(4)
(5)
(6)
(7)
Type of Land Corer
Catchment
S.M. Formula
Average EMC of
Column
Average EMC of
Column
Acreage
0.46 + 8.3I
TN m lL
2) x (3) * 4)
TP (m /L)
(2) (3) x (6)
Transportation impervious
0.01
1.10
2.60
0.20
0.19
0.01
Roof impervious
1.10
1.95
0.00
0.11
0.00
Managed pervious
1.10
1.42
1.31
0.28
0.26
Wooded pervious
1.10
0.94
0.00
0.14
0.00
Area taken up by BMP
1.10
1.95
0.00
0.11
0.00
Fraction Impervious (I) =
0.08
Pre-BMP TN
1.51
Pre-BMP TP0.27
Load (lb/yr)=
Load (lb/yr) _
Total Area of Development =
0.91
Pre BMP TN Export
1.66
Pre BMP TP Export
0.30
(lb/ac/yr) _
(lb/ac/yr) _
Post-BMP TN
Post-BMP TP
1.51
0.27
Load (lb/yr),=,
Load (lb/yr) =
Post-BMP TN
1.66
Post-BMP TP Export
0.30
Export (Ib/ac/yr)
(lb/ae/yr)
Catchment 3:
Total acreage of catchment 3 = ac
First BMP's TN removal rate = % First BMP's TP removal rate = %
Second BMP's TN removal rate = % Second BMP's TP removal rate = %
Third BMP's TN removal rate = % Third BMP's TP removal rate = %
TOTAL TN REMOVAL RATE = 0 % TOTAL TP REMOVAL RATE = 0 %
(1) (2)
(3),
(4) (5)
(6) (7)
Type of Land Cover Catchment
S.M. Formula
Average EMC of Column''
Average EMC of Column
Acreage
0.46 + 8.3I
TN rn /L 2 T 3 T 4
TP m /L 2 T 3 r 6
Transportation impervious
2.60
0.19
Roof impervious
1.95
0.11
Managed pervious
1.42
0.28
Wooded pervious
0.94
0.14
Area taken up by BMP
1.95
0.11
Fraction Impervious (I) _
Pre-BMP TN
Pre-BMP TP
Load (lb/yr) =
Load (lb/yr) _
Total Area of Development =
Pre BMP TN Export
Pre BMP TP Export
(lb/ac/yr) _,
(lb/ac/yr) _',
Post-BMP TN'
Post-BMP TP
Load (Ib/yr) =,
Load (Ib/yr) _,
Post-BMP TN
Post BMP TP Export
Export(lb/ac/yr) -
(lb/ac/yr) -

Tar -Pamlico Stormwater Rule 15A NCAC 2B .0258
Last Modified 5/23/03
Weighted Average of Nutrient Loadings from the Catchments:
Catchment Post-BMP Post-BMP
Acreage TN Loading TP Loading
(lb/ac/yr) (lblac/ r)
Catchment 1 3.73 8.12 0.84
Catchment 2 0.91 1.66 0.30
Catchment 3 0.00 0.00 0.00
11111L-
TOTAL FOR DEVELOPMENT 4.64 6.85 0.73
Note: The nutrient loading goals are 4.0 lb/ac/yr for TN and 0.4 lb/ac/yr for TP. If the post -development nutrient
loading is below these levels, then the BMPs planned are adequate. Otherwise, additional BMPs and/or
modifications in development plans are required.