HomeMy WebLinkAboutWPO202100035 Stormwater Management Maintenance Agree. 2021-09-17/A®
SEH
Building a Better World
for All of Us®
Engineers I Architects I Planners I Scientists
Erosion Control Plan & Stormwater Management Plan
Airport Road Pump Station
Albemarle County, Virginia
SEH No. RIVAN 153082
September 9, 2021
I hereby certify that this report was prepared by me or under my direct supervision, and
that I am a duly Licensed Professional Engineer under the laws of the State of Virginia.
Ere
Miles B.
Date: 9/2/2021 License No.: 0402051131
Reviewed By: Maria McCarty Date: 9/2/2021
Short Elliott Hendrickson Inc.
3535 Vadnais Center Drive
St. Paul, MN 55110-3507
651.490.2000
A
SEH
lam.
SEH
Building a Better World
for All of Us®
Contents
Certification Page
Contents
1 Project Overview.........................................................1
2 Site Description...........................................................1
2.1
Drainage.................................................................................................1
2.2
Disturbance ............................................................................................1
2.3
Soils........................................................................................................1
2.4
Adjacent Areas.......................................................................................2
2.5
Steep Slopes Overlay.............................................................................2
3 Erosion Control Plan...................................................2
3.1 Temporary Measures.............................................................................2
3.2 Stabilization............................................................................................3
3.3 Erosion Control Sequence......................................................................4
3.4 Maintenance and Sediment Disposal.....................................................5
4 Stormwater Management Plan...................................5
4.1 Water Quality Requirements...................................................................5
4.2 Water Quantity Requirements................................................................6
List of Tables
Table 1 — Site Surface Conditions..............................................................................5
Table 2 — East Drainage Area Surface Conditions.....................................................6
Table 3 — West Drainage Area Surface Conditions....................................................6
SEH is a registered trademark of Short Elliott Hendrickson Inc.
EROSION CONTROL PLAN & STORMWATER MANAGEMENT PLAN RIVAN 153082
Contents (continued)
List of Appendices
Appendix A — General Vicinity Map & Soil Report
Appendix B — Drainage Areas
Appendix C — VRRM Quality
Appendix D — East Drainage Areas
Appendix E — West Drainage Areas
Appendix F — E&S Design
EROSION CONTROL PLAN & STORMWATER MANAGEMENT PLAN RIVAN 153082
Erosion Control Plan & Stormwater
Management Plan
Airport Road Pump Station
Prepared for Rivanna Water & Sewer Authority
1 Project Overview
The proposed project clears an existing wooded site for the construction of a potable water pump
station for the Rivanna Water & Sewer Authority. The pump station will have a paved driveway
from Berkmar Dr. Screening will be provided in the north corner of the site and along the south
side of the driveway. A gravel path will provide access the proposed engineered level spreader. The
remaining space will be seeded with grass.
2 Site Description
2.1 Drainage
The site is 1.60 acres and located in the Powell Creek Watershed. Most of the site is in its
existing condition is wooded and drains to the east and west. There are no existing BMP's on the
site.
2.2 Disturbance
The proposed work will disturb approximately 1.19 acres.
2.3 Soils
Soils have been identified and classed by the Natural Resources Conservation Service (NRCS).
See appendix A for full report. For the stormwater evaluations, all soil was assumed type D soils.
Soils on site are as follows:
65B — Fairview sandy loam:
Fairview sandy loam is residuum weathered from granite and gneiss. Depth from water table is
more than 80 inches, with slopes from 2 to 7 percent. Soil is considered well drained, and a
medium runoff class.
27B — Elioak Loam:
Elioak Loam is residuum weathered form mica schist. Depth from water table is more than 80
inches, with slopes form 2 to 7 percent. Soil is considered well drained, and a medium runoff
class.
RIVAN 153082
Page 1
2.4 Adjacent Areas
The adjacent areas are a mix of multifamily and commercial properties. Minimum yard
requirements and screening requirements are met for this parcel.
2.5 Steep Slopes Overlay
There are no steep slopes on the parcel.
3 Erosion Control Plan
The erosion and sediment control devices and measures have been designed and placed in
accordance with the Virginia Erosion and Sediment Control Handbook (VESCH), Third Edition,
1992.
3.1 Temporary Measures
Temporary measures are used to limit erosion and contain sediment within areas denude of
vegetation.
3.1.1 Construction Entrance (CE)
A temporary paved construction entrance shall be used to prevent tracking of material from
construction vehicles off the site. The construction entrance shall be constructed in accordance
with the detail sin the drawings. Maintenance of the construction entrance shall be in accordance
with Albemarle County requirements. See E&S plan sheet of the SWPPP for placement location.
3.1.2 Silt Fence (SF)
Silt fence shall be used to prevent sediment from leaving the site. Silt fence shall be constructed
in accordance with plate 3.05-2 of the VESCH. Installation, construction specification, and
maintenance of the silt fence shall meet Std. & Spec. 3.05 of the VESCH. See E&S plan sheet of
the SWPPP for placement location.
3.1.3 Storm Drain Inlet Protection (IP)
Storm drain inlet protection shall be used to prevent sediment from entering the stormsewer
system. Inlet protection shall be installed according to plates 3.07-3 and 3.07-8 of the VESCH.
All construction and maintenance requirements of Std. & Spec. 3.07 shall be met. See E&S plan
for placement location.
3.1.4 Tree Preservation & Protection (TP)
Tree protection fence shall be used to protect existing groves of trees. The tree protection fence
shall be constructed and maintained in accordance with the Tree Protection Fence standard
detail on the E&S Detail plan sheet of the SWPPP. See the E&S plan sheet of the SWPPP for
placement location.
3.1.5 Culvert Inlet Protection (CIP)
Culvert inlet protection shall be used to prevent sediment from entering the stormsewer system.
Inlet protection shall be installed according to plates 3.08-1 of the VESCH. All construction and
EROSION CONTROL PLAN & STORMWATER MANAGEMENT PLAN RIVAN 153082
Page 2
maintenance requirements of Std. & Spec. 3.08 shall be met. See E&S plan for placement
location.
3.2 Stabilization
3.2.1 Temporary Stabilization
Temporary stabilization shall be obtained by temporary seeding (TS), mulching (MU), and Soil
Stabilization Blankets & Matting (BIM). Temporary seeding shall perform in accordance with Std.
& Spec. 3.31 of the VESCH, and temporary mulching shall be performed in accordance with Std.
& Spec. 3.35. Soil stabilization blankets & matting shall be in accordance with St. & Spec. 3.36
VESCH. Temporary seeding and mulching shall be used on any disturbed area that shall not be
worked for more than 14 days.
3.2.2 Permanent Stabilization
Permanent stabilization shall be obtained by permanent seeding (PS) and soil stabilization
blanket & matting (B/M). Prior to seeding, place stockpiled topsoil. Permanent seeding shall be
in accordance with Std. & Spec 3.32. Per VESCH standard 3.32, the application of lime and
fertilizer shall be determined by soil testing except under unusual conditions where it is not
possible. Treatment 1 soil stabilization blanket meeting Std. & Spec 3.36 shall be used over the
permanent seeding. Placement of the soil stabilization blanket shall be in accordance with
standard plates 3.36-1 and 3.36-2.
3.2.3 Seeding
Seeding shall conform to the following:
Minimum Minimum Maximum
Seed Purity Germination Weed Seed
Type N N N
Kentucky 31 Tall Fescue 97 85 0.50
Perennial Ryegrass 98 90 0.50
Kentucky Bluegrass 97 85 0.50
Annual Ryegrass 97 90 0.50
Weeping Lovegrass 98 87 0.50
German Millet 98 85 0.50
Cereal (Winter) Rye 98 85 0.50
Redtop 94 80 0.50
Seeding mixtures to be used on the projected as follows:
EROSION CONTROL PLAN & STORMWATER MANAGEMENT PLAN
Page 3
RIVAN 153082
3.3
Permanent Seeding 180 Kentucky 31 5 Perennial 5 Kentucky
#/acre Tall Fescue #/acre Ryegrass #/acre Bluegrass
Temporary Winter 75 Annual 75 Cereal
Seeding #/acre Ryegrass #/acre (Winter) Rye
Temporary Spring 75 Annual
Seeding #/acre Ryegrass
Temporary Summer 75 German
Seeding #/acre Millet
Erosion Control Sequence
1. No demolition, construction or land disturbance activities may begin until permanent
stormwater BMP boundaries are marked and all perimeter erosion control measures have
been installed as per Contract Drawings. Perimeter control devices include, silt fence,
temporary stone construction entrance and tree protection fence. If clearing is required for
installation of a particular measure, all other measures shown shall be installed first; clearing
of the land necessary may then proceed.
2. Once all measures have been installed, the site shall be cleared and grubbed as necessary
within the limits of disturbance as per the Contract Drawings. Efforts shall be made to
minimize the amount of cleared area exposed at any given time.
3. Once clearing and grubbing is complete, any necessary topsoil stripping may begin. Topsoil
shall be stockpiled on site in the stockpile areas per the Contract Drawings. The stockpile
shall receive such temporary seeding measures as may be required. Any soil take offsite
shall be stockpiled at locations with all required permits. If offsite location does not have all
required permits, the contractor is responsible for obtaining all required permits.
4. Demolition, earthwork and construction operations may begin once topsoil has been removed
and stockpiled.
5. All pipes shall be installed in accordance with standard construction techniques. Only the
length of trench in which pipe can be installed in one day's time shall be open at any time,
with spoil material placed on the uphill side of the trench. Piping shall be capped at the end
of each day's work to prevent sediment from entering. The trench shall be backfilled at the
end of each day's work and the disturbed area seeded and mulched within seven (7) days of
backfill.
6. All inlets shall have inlet protection installed immediately after installation.
7. Temporary soil stabilization shall be applied within seven (7) days to denude areas that may
not be at final grade but will remain dormant for longer than fourteen (14) days, except for
that portion of the site on which work will be continuous beyond fourteen (14) days.
8. Once Construction Activities are completed, final grading may begin.
9. Upon completion of final grading, permanent seeding, mulching and fertilization measures
shall be employed on all disturbed areas. Permanent soil stabilization shall be applied within
seven (7) days after final grade is reached on any portion of the site. All remaining erosion
control measures shall remain in place until the entire site has been stabilized.
EROSION CONTROL PLAN & STORMWATER MANAGEMENT PLAN RIVAN 153082
Page 4
10. Once permanent stabilization has occurred and approved by inspector, temporary sediment
control measures shall be removed. Any areas disturbed by the removal of these measures
shall be returned as closely as possible to original condition and seeded, mulched and
fertilized.
11. Construction of permanent stormwater bmp may begin, once the contributing drainage area
has been stabilized and perimeter E&S controls have been removed and cleaned out.
3.4 Maintenance and Sediment Disposal
All sediment and erosion control measures shall be inspected upon installation, at least once
every five business days and no later than 24 hours following a measurable storm event.
Repairs to, or replacement of, measures shall occur immediately if necessary and accumulated
sediment removed as needed.
Sediment shall be removed from all erosion control measures when the sediment storage volume
of the measure has become 50% full. All removed sediment shall be disposed of in an approved
manner at the stockpile location or a location to be designated by the Engineer or Owner. Steps
shall be taken at the disposal site to ensure that further sediment transport does not occur.
Permanent or temporary soil stabilization shall be applied to denuded areas within seven days
after final grade is reached on any portion of the site. Temporary soil stabilization shall be applied
within seven days to denuded areas that may not be at final grade but will remain dormant for
longer than 14 days. Permanent stabilization shall be applied to areas that are to be left dormant
for more than one year.
4 Stormwater Management Plan
This stormwater management plan (SMP) has been prepared in accordance with the Virginia
Code of Ordnances. Drainage area maps are in Appendix B.
4.1 Water Quality Requirements
Virginia Runoff Reduction Method Spreadsheet (VRRMS) version 3 for new construction was
utilized to meet water quality requirements outlined in section 9VAC25-870-63 of Virginia Code.
Pre and post surface conditions for the site are summarized in the table below.
Table 1 - Site Surface Conditions
The total phosphorous reduction required is 0.48 Ibs/yr and will be achieved by purchasing 0.48
Ibs/yr in credits. The Site page and the Site Summary Page and from the VRRMS is attached in
Appendix C.
EROSION CONTROL PLAN & STORMWATER MANAGEMENT PLAN RIVAN 153082
Page 5
4.2
4.2.1
Water Quantity Requirements
For water quantity evaluation the site was evaluated as two drainage areas, east and west, refer
to Appendix B for the drainage area drawings. The east drainage area drains to the proposed
engineered level spreader (ELS) with forebay. Drainage from the parcel to the west is included in
the east drainage area. The west drainage area drains to catch basins on Berkmar Dr. north of
the intersection with Laurel Park Ln. Drainage from the multifamily homes on the west side of
Berkmar Dr. and the empty lot to the east of Berkmar Dr are included in the west drainage area.
The tables below summarize pre- and post -surface conditions for each drainage area.
Table 2 - East Drainage Area Surface Conditions
Table 3 - West Drainage Area Surface Conditions
Quantity Protection - East
The methodology outlined in 9VAC25-870-66.D was used to meet quantity protection
requirements. This subsection addresses three impacts from increased sheet flow from a
development: erosion, sedimentation, and flooding. Calculations are provided in Appendix D.
Because all the runoff from this drainage area is sheet flow and the conditions of the subsection
are met, no further water quantity controls are required.
Erosion
Erosion impacts from sheet flow are addressed by designing the release of the post peak sheet
flow from a 10-yr 24-hr storm event less than the pre -condition. The pre -peak sheet flow is
determined by dividing the peak flow event by the width of sheet flow. For this site, the width of
sheet flow is equal to the property line, which is 218 feet. The post peak sheet flow is determined
by dividing the peak flow evet by the length of the ELS, which is 170 feet. SCS graphical peak
discharge was used to calculate the peak flow and TR-55 to calculate the peak flow with storage.
The pre -condition peak sheet flow for a 10-yr 24-hr event is 0.026 cfs/If. With the ELS, the post
condition peak sheet flow for a 10-yr 24-hr event is 0.025 cfs/If.
EROSION CONTROL PLAN & STORMWATER MANAGEMENT PLAN RIVAN 153082
Page 6
4.2.2
Sedimentation
A forebay designed for sedimentation is provided upstream of the ELS.
Flooding
Flooding impacts from sheet flow are addressed by designing the release of the post peak flow
from a 10-yr 24-hr storm event less than the pre -condition. This is achieved by sizing the forebay
with additional storage. SCS graphical peak discharge was used to calculate the peak flow and
TR-55 to calculate the peak flow with storage.
The pre -condition peak flow for a 10-yr 24-hr event is 5.6 cfs. With the forebay, the post
condition peak flow for a 10-yr 24-hr event is 4.3 cfs.
Channel and Flood Protection - West
The methodology outlined in 9VAC25-870-66.B.1.a and 9VAC25-870-66.C.1.a was used to meet
channel and flood protection requirements. Rational method and Manning's equation were used
to calculate the peak runoff to the existing storm sewer system on Berkmar Dr, and the peak flow
at 1 % of the drainage area. Full calculations are provided in Appendix E.
The storm sewer system on Berkmar Dr. consist of 15-inch concrete pipe. The post 10-yr peak
flow to the existing storm sewer system on Berkmar Dr. is 5.02 cfs, which is less than the
capacity of the storm sewer system of 6.93 cfs. Indicating that the existing manmade stormwater
system can confine the 10-yr flow and convey the 2-yr flow without causing erosion. At the point
where the drainage area of the site is less than 1 % of the total drainage area, the existing run off
for the 10-yr storm event increases form 183 cfs to 185 cfs. This a 1 % increase in flow. It is
unanticipated that the proposed project will cause erosion or flooding issues downstream.
EROSION CONTROL PLAN & STORMWATER MANAGEMENT PLAN RIVAN 153082
Page 7
Appendix A
Site Location & Soil Report
General Vicinity Map
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Airport „i
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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
Albemarle
County, Virginia
January 28, 2021
Preface
Soil surveys contain information that affects land use planning in survey areas.
They highlight soil limitations that affect various land uses and provide information
about the properties of the soils in the survey areas. Soil surveys are designed for
many different users, including farmers, ranchers, foresters, agronomists, urban
planners, community officials, engineers, developers, builders, and home buyers.
Also, conservationists, teachers, students, and specialists in recreation, waste
disposal, and pollution control can use the surveys to help them understand,
protect, or enhance the environment.
Various land use regulations of Federal, State, and local governments may impose
special restrictions on land use or land treatment. Soil surveys identify soil
properties that are used in making various land use or land treatment decisions.
The information is intended to help the land users identify and reduce the effects of
soil limitations on various land uses. The landowner or user is responsible for
identifying and complying with existing laws and regulations.
Although soil survey information can be used for general farm, local, and wider area
planning, onsite investigation is needed to supplement this information in some
cases. Examples include soil quality assessments (http://www.nrGs.usda.govtwps/
portal/nres/main/soils/healthn 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.nrGs.usda.govtwps/portal/nres/detail/soils/contactus/?
cid=nres 142p2_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 (202) 720-2600 (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 (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity
provider and employer.
3
Contents
Preface....................................................................................................................
2
SoilMap..................................................................................................................5
SoilMap................................................................................................................6
Legend..................................................................................................................7
MapUnit Legend..................................................................................................
8
MapUnit Descriptions..........................................................................................
8
Albemarle County, Virginia..............................................................................10
27B—Elioak loam, 2 to 7 percent slopes ....................................................
10
27C—Elioak loam, 7 to 15 percent slopes ..................................................
11
28C3—Elioak clay loam, 7 to 15 percent slopes, severely eroded .............
12
34D—Glenelg loam, 15 to 25 percent slopes..............................................13
47C—Philomont sandy loam, 7 to 15 percent slopes .................................
14
6513—Fairview sandy loam, 2 to 7 percent slopes ......................................
15
65C—Fairview sandy loam, 7 to 15 percent slopes....................................16
9413—Toast sandy loam, 2 to 7 percent slopes...........................................17
94C—Toast sandy loam, 7 to 15 percent slopes.........................................18
References............................................................................................................19
C!
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.
I
27B
NEW
I
27C
MAPLEGEND
Area of Interest (AOQ
O
Area of Interest (AOI)
Solis
Soil Map Unit Polygons
N
Soil Map Unit Lines
Soil Map Unit Points
Special
Point Features
V
Blowout
®
Borrow Pit
Clay Spot
O
Closed Depression
Gravel Pit
Gravelly Spot
O
Landfill
A.
Lava Flow
Marsh or swamp
Mine or Quarry
O
Miscellaneous Water
O
Perennial Water
y
Rock Outcrop
+
Saline Spot
Sandy Spot
Severely Eroded Spot
Q
Sinkhole
Slide or Slip
J,
Sodic Spot
Custom Soil Resource Report
MAP INFORMATION
g
Spoil Area
The soil surveys that comprise your AOI were mapped at
1:15,800.
o
Stony Spot
W
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
�..ry
Rails
measurements.
N
Interstate Highways
Source of Map: Natural Resources Conservation Service
ti
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: Albemarle County, Virginia
Survey Area Data: Version 14, Jun 3, 2020
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: May 20, 2019—Aug
1, 2019
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor
shifting of map unit boundaries may be evident.
V1
Custom Soil Resource Report
Map Unit Legend
Map Unit Symbol
Map Unit Name
Acres in AOI
Percent of AOI
27B
Elioak loam, 2 to 7 percent
3.5
12.6%
slopes
27C
Elioak loam, 7 to 15 percent
2.8
10.2%
slopes
28C3
Elioak clay loam, 7 to 15
4.2
15.1%
percent slopes, severely
eroded
34D
Glenelg loam, 15 to 25 percent
0.9
3.2%
slopes
47C
Philomont sandy loam, 7 to 15
0.9
3.3%
percent slopes
65B
Fairview sandy loam, 2 to 7
9.9
35.6%
percent slopes
65C
Fairview sandy loam, 7 to 15
0.4
1.5%
percent slopes
94B
Toast sandy loam, 2 to 7
3.6
12.8%
percent slopes
94C
Toast sandy loam, 7 to 15
1.6
5.7%
percent slopes
Totals for Area of Interest
27.9
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
Ll
Custom Soil Resource Report
management. These are called contrasting, or dissimilar, components. They
generally are in small areas and could not be mapped separately because of the
scale used. Some small areas of strongly contrasting soils or miscellaneous areas
are identified by a special symbol on the maps. If included in the database for a
given area, the contrasting minor components are identified in the map unit
descriptions along with some characteristics of each. A few areas of minor
components may not have been observed, and consequently they are not
mentioned in the descriptions, especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
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 Iandforms or
Iandform 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.
W
Custom Soil Resource Report
Albemarle County, Virginia
2713—Elioak loam, 2 to 7 percent slopes
Map Unit Setting
National map unit symbol: kb8y
Elevation: 360 to 790 feet
Mean annual precipitation: 25 to 65 inches
Mean annual air temperature: 54 to 59 degrees F
Frost -free period: 195 to 231 days
Farmland classification: All areas are prime farmland
Map Unit Composition
Elioak and similar soils: 80 percent
Estimates are based on observations,
Description of Elioak
descriptions, and transects of the mapunit.
Setting
Landform: Hillslopes
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from mica schist
Typical profile
H1 - 0 to 8 inches: loam
H2 - 8 to 39 inches: silty clay
H3 - 39 to 79 inches: silt loam
Properties and qualities
Slope: 2 to 7 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat)
(0.20 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water capacity: Moderate (about 6.6 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Hydric soil rating: No
Moderately high to high
10
Custom Soil Resource Report
27C—Elioak loam, 7 to 15 percent slopes
Map Unit Setting
National map unit symbol: kb8z
Elevation: 340 to 820 feet
Mean annual precipitation: 25 to 65 inches
Mean annual air temperature: 54 to 59 degrees F
Frost -free period: 195 to 231 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Elioak and similar soils: 80 percent
Estimates are based on observations,
Description of Elioak
descriptions, and transects of the mapunit.
Setting
Landform: Hillslopes
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from mica schist
Typical profile
H1 - 0 to 8 inches: loam
H2 - 8 to 39 inches: silty clay
H3 - 39 to 79 inches: silt loam
Properties and qualities
Slope: 7 to 15 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat)
(0.20 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water capacity: Moderate (about 6.6 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Hydric soil rating: No
Moderately high to high
11
Custom Soil Resource Report
28C3—Elioak clay loam, 7 to 15 percent slopes, severely eroded
Map Unit Setting
National map unit symbol: kb91
Elevation: 330 to 710 feet
Mean annual precipitation: 25 to 65 inches
Mean annual air temperature: 54 to 59 degrees F
Frost -free period: 195 to 231 days
Farmland classification: Not prime farmland
Map Unit Composition
Elioak and similar soils: 80 percent
Estimates are based on observations,
Description of Elioak
descriptions, and transects of the mapunit.
Setting
Landform: Hillslopes
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from mica schist
Typical profile
H1 - 0 to 8 inches: clay loam
H2 - 8 to 39 inches: silty clay
H3 - 39 to 79 inches: silt loam
Properties and qualities
Slope: 7 to 15 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat)
(0.20 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water capacity: Low (about 6.0 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: B
Hydric soil rating: No
Moderately high to high
Custom Soil Resource Report
34D—Glenelg loam, 15 to 25 percent slopes
Map Unit Setting
National map unit symbol: 2w061
Elevation: 30 to 1,200 feet
Mean annual precipitation: 34 to 46 inches
Mean annual air temperature: 43 to 66 degrees F
Frost -free period: 174 to 211 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Glenelg and similar soils: 90 percent
Estimates are based on observations,
Description of Glenelg
descriptions, and transects of the mapunit.
Setting
Landform: Hillslopes
Landform position (two-dimensional): Shoulder, backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from mica schist
Typical profile
Ap - 0 to 6 inches: loam
Bt - 6 to 23 inches: loam
C - 23 to 65 inches: loam
Properties and qualities
Slope: 15 to 25 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: High
Capacity of the most limiting layer to transmit water (Ksat)
(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 capacity: Very high (about 13.5 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: B
Hydric soil rating: No
Moderately high to high
13
Custom Soil Resource Report
47C—Philomont sandy loam, 7 to 15 percent slopes
Map Unit Setting
National map unit symbol: 2v7j9
Elevation: 360 to 1,540 feet
Mean annual precipitation: 25 to 65 inches
Mean annual air temperature: 54 to 59 degrees F
Frost -free period: 195 to 231 days
Farmland classification: Not prime farmland
Map Unit Composition
Philomont and similar soils: 75 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Philomont
Setting
Landform: Hillslopes
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from granite and gneiss
Typical profile
Ap - 0 to 5 inches: sandy loam
Bt - 5 to 79 inches: sandy loam
Properties and qualities
Slope: 7 to 15 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat): High to very high (5.95
to 19.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water capacity: Moderate (about 6.6 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 6e
Hydrologic Soil Group: A
Hydric soil rating: No
14
Custom Soil Resource Report
6513—Fairview sandy loam, 2 to 7 percent slopes
Map Unit Setting
National map unit symbol: 2v7jx
Elevation: 360 to 1,540 feet
Mean annual precipitation: 25 to 65 inches
Mean annual air temperature: 54 to 59 degrees F
Frost -free period: 195 to 231 days
Farmland classification: All areas are prime farmland
Map Unit Composition
Fairview and similar soils: 90 percent
Estimates are based on observations,
Description of Fairview
descriptions, and transects of the mapunit.
Setting
Landform: Interfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from granite and gneiss
Typical profile
Ap - 0 to 6 inches: sandy loam
Bt - 6 to 32 inches: clay
C - 32 to 79 inches: sandy clay loam
Properties and qualities
Slope: 2 to 7 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat)
(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 capacity: Moderate (about 7.6 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Hydric soil rating: No
Moderately high to high
15
Custom Soil Resource Report
65C—Fairview sandy loam, 7 to 15 percent slopes
Map Unit Setting
National map unit symbol: 2v7jy
Elevation: 360 to 1,540 feet
Mean annual precipitation: 25 to 65 inches
Mean annual air temperature: 54 to 59 degrees F
Frost -free period: 195 to 231 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Fairview and similar soils: 90 percent
Estimates are based on observations,
Description of Fairview
descriptions, and transects of the mapunit.
Setting
Landform: Interfluves
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Nose slope
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from granite and gneiss
Typical profile
Ap - 0 to 6 inches: sandy loam
Bt - 6 to 32 inches: clay
C - 32 to 79 inches: sandy clay loam
Properties and qualities
Slope: 7 to 15 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat)
(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 capacity: Moderate (about 7.6 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: B
Hydric soil rating: No
Moderately high to high
it.
Custom Soil Resource Report
9413—Toast sandy loam, 2 to 7 percent slopes
Map Unit Setting
National map unit symbol: 2v7k8
Elevation: 360 to 1,540 feet
Mean annual precipitation: 25 to 65 inches
Mean annual air temperature: 54 to 59 degrees F
Frost -free period: 195 to 231 days
Farmland classification: All areas are prime farmland
Map Unit Composition
Toast and similar soils: 90 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Toast
Setting
Landform: I nterfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from granite and gneiss
Typical profile
Ap - 0 to 7 inches: sandy loam
BA - 7 to 11 inches: sandy clay loam
Bt - 11 to 30 inches: clay
C - 30 to 60 inches: sandy clay loam
Properties and qualities
Slope: 2 to 7 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water capacity: Moderate (about 8.0 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Hydric soil rating: No
IVA
Custom Soil Resource Report
94C—Toast sandy loam, 7 to 15 percent slopes
Map Unit Setting
National map unit symbol: 2v7k9
Elevation: 360 to 1,540 feet
Mean annual precipitation: 25 to 65 inches
Mean annual air temperature: 54 to 59 degrees F
Frost -free period: 195 to 231 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Toast and similar soils: 90 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Toast
Setting
Landform: Interfluves
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from granite and gneiss
Typical profile
Ap - 0 to 7 inches: sandy loam
BA - 7 to 11 inches: sandy clay loam
Bt - 11 to 30 inches: clay
C - 30 to 60 inches: sandy clay loam
Properties and qualities
Slope: 7 to 15 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water capacity: Moderate (about 8.0 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: B
Hydric soil rating: No
WV
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.govAvps/portal/
nres/deta i I/nations I/soi Is/?cid=n res 142p2_054262
Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for
making and interpreting soil surveys. 2nd edition. Natural Resources Conservation
Service, U.S. Department of Agriculture Handbook 436. http://
www. nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053577
Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of
Agriculture, Natural Resources Conservation Service. http://
www. nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053580
Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and
Delaware Department of Natural Resources and Environmental Control, Wetlands
Section.
United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of
Engineers wetlands delineation manual. Waterways Experiment Station Technical
Report Y-87-1.
United States Department of Agriculture, Natural Resources Conservation Service.
National forestry manual. http://www.nres.usda.gov/wps/portal/nres/detail/soils/
home/?cid=nres 142 p2_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/rangepasture/?cid=stelprd b1043084
19
Custom Soil Resource Report
United States Department of Agriculture, Natural Resources Conservation Service.
National soil survey handbook, title 430-VI. http://www.nres.usda.gov/wps/portal/
nres/detail/soils/scientists/?cid=nres 142p2_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. hftp://www.nres.usda.gov/wps/portal/nres/detail/national/soils/?
cid=n res 142p2_053624
United States Department of Agriculture, Soil Conservation Service. 1961. Land
capability classification. U.S. Department of Agriculture Handbook 210. http://
www.nrcs.usda.gov/lnternet/FSE—DOCUMENTS/nrcsl42p2_052290.pdf
20
Appendix B
Drainage Areas
0
SITE DATA
EXISTING/PROPOSED ZONING: RURAL AREAS DISTRICT
MAGISTERIAL:
EXISTING/PROPOSED USE:
WATERSHED:
OVERLAY DISTRICTS:
BUILDING SQUARE FOOTAGE:
NOTES:
CONTRACTOR SHALL REMOVE ALL TRASH AND DEBRIS FOUND ON SITE AS PART OF WORK.
ALL TRASH AND DEBRIS SHALL BE PROPERLY DISPOSED OF IN ACCORDANCE WITH STATE, /
COUNTY AND LOCAL REGULATIONS.
I \ \ I I I I I I I
132-41A3 I I I I I I I
I I \\ I \ \ \ \ \ \ DAVID P. TURNER & THE I I I I I I
I I \ \ I \ \\ IN,\\ \\ \ MARKET PLACE OF VIRGINIA LC I I I I I I I
I I I \\ I \\ \ \ \ \ (D.B. 4151, PG. 310) I I I I I I I
ZONING: RURAL AREAS I I I I I I I
/ 20 0 20 40
ENTRANCE CORRIDOR -AIRPORT IMPACT DISTRICT I I
f " I I I I I I I I I I I I I I I I I I I scale 10 feet
CN
PROPOSED WATER PUMP STATION - 1,209 SF /// / / / /'' I Ico co m cj
I
COVERED GENERATOR PAD - 769 SF 'O m co
o o Ico 0 o N
O I Lo �00
SETBACKS: 250' MINIMUM FRONTAGE ALONG EXISTING PUBLIC ROAD
150' MINIMUM FRONTAGE ALONG INTERNAL PUBLIC ROAD
OR PRIVATE ROAD
75' FRONT SETBACK / / / 32-41A1 --4--
\ N,\ I I F— I— —I
25' SIDE SETBACK / /
LEASE AREA
36REARSETBACK / / CROWN COMMUNICATION INC
FRONT SETBACK NOTE: FRONT SETBACK SHOWN IS 75' FROM EXISTING PROPERTY LINE 1 / / (D.B. 4151, PG. 310)cli
RUNNING ROUGHLY PARALLEL TO EXISTING BERKMAR DR RIGHT-OF-WAY. PROPOSED / / ZONING: RURAL AREAS \ 1 o I I i
/ / / - I o I \ I I
BUILDING IS ALSO SET BACK AT LEAST 75' FROM THE ANTICIPATED VDOT RIGHT-OF-WAY REMOVE EXISTING � / / / / / I ��
FOR BERKMAR DR. TRASH/DEBRIS o I II I I I I I I \ I
/ 1
RIO DISTRICT
PUBLIC WATER FACILITY
POWELL CREEK
I I I I I I I I I I I I I I I I I
I I I I I I I I I I I I I I I I I
\ 1 1 1 1 1 1 1 1 till, 1 1
\I 1j11111111111 Id
\ I I I I I I I I I I I I I I I I ANTICIPATED VDOT
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RIGHT-OF-WAY /
\\\I 1111111111 II'
olll�lllllll1111�111 /
o�ll (IIIIIIIIII II /
o�;
III °c0000l
c o co
I F co) coI I I 11 Illo I
I I I I I I I I I I I I
ory
IIIIIIIIIIIIIIIIIII �/// /�
IIIIIIIIIIIIIIIIIII / ��
III���IIIII11111111 \\\1
IIIIIIIIIIIIIIIIIII \\\ _ i \ —�\\ 1
IIIIIIIIIIIIIIIIIII \ \ \
11111j1111111111111 \ \ \
II II II II III II IIII1111111 11 \I � \\
III�II�III1111111�1 I I \\
/// IIIIIIIIII I I I
32-41 D2 I \ \
/ MICROAIRE HOLDING \
/ I \
COMPANY LLC \ \I
(D.B. 5240, PG. 170)
ZONING: LIGHT INDUSTRY
CONTROL POINT \
� \\ \ HYDRANT TOP NUT \
\�\\\� \�\\\ \,EL=616.83 \\\-
CONTROL POINT o I 1 \ \ I \ \ \ \ I
NAIL o o I I \\ \\ \\ 1\ I\ \\ \\ \\ \
N 3935942.0420
I II i E 11500310.4600 11I ANTICIPATED VDOT GRADING EL=608.53 I II
EASEMENT (TYP) I 1I I \\ \ \ \\ I \ \ \ 32-\4\1H1X �I
II I STORAGE MANAGEMENT I LLC I
it l I �j / I Q�` 1 I I I I I I I I\ II (D.B. 1921, PG.423) I
II I I 1 ZONING: HIGHWAY COMMERCIAL I
EXISTING / it
CELL TOWER
CONTROL POINT I I I
2\\ i w N ^ coCONTROL POINT °Y�� �
INAIL
NAIL co N N 3935877.7030
N
2g N 3936050.7740 E 11500340.2300 1II I 1
E 11500044.1500 32-41A2 o EL = 599.30 1 II
I I
EL = 625.58 \ / I / / j �/ I 1 RIVANNA WATER AND SEWER 1 I I I I I I I 1 I I I I 1 I I
I I I // / I AUTHORITY I I 1 \ / 0 1 I I I I I I I I I 1 I I
CONTROL POINT // / / I/ I // // / (D.B. 4912, PG. 328) I / / / I II 1 I o I I 1 1 1 I I I I
I \ f o I
NAIL / -� -__ / / I / / / ZONING: RURAL AREAS CONTROL POINT I I / / / 1 1 1 1 / I I I I I I
N 3935996.9300 / ----� / / / % I / \ 1 1 `1 I I N I NAILco
I I I I
\\ / �- II / / / / / \I 11 + j 1 f i I E 11
E 11500080.2200 500294.3600
I I/ (� — / J / / / / /
\ I \ EL = 626.20 / I I I I / , I I I I EL = 605.11 I I I I
CONTROL POINT l I l j l I I I I I I I I I
--I---------��------- �/ I I / NAIL / / I I I I co
N 3935898.4050 / / / / 1 I I I I
E 11500220.5100
EL=613.14
II I ► / / ^
//�
CLEAR & GRUBBING LIMITS (TYP)
/ / / / / / / / / / /,Qp` / / / / / / / / / / EXISTING WOODED AREA
APPROX. AREA= 48,000 SF / / 1
MIX OF DECIDUOUS & / 1
\ EVERGREEN TREES \ / 5y /
\ 1
\
LA
/Co�^�,'�— (IV
W
j./
Ii\
_\ I \ \ \\ Lo \ co� I I / / \ \ I I i I i 11 II \ 1 ; I I / / / / / / / / / /'S/1�
N \ \ N N co
co ry
O \ \ \ N ° I I
co I
CONTROLPOINT,
o I POINT ,
NAIL os 1 \ `rn 1
_ I / I n a 11 1 / rn l l
I I I 1 a
� EL = 621.31 0 0`1' �co`1' �,9 �B �� v6, c`O c`o co � ts)� oo� co ro o
co O I 1 I 1 �` / / / / / \ \ \ I 1 \ mooc000���c�o o rnrn h
r- ADDITIONAL GRUBBING REQUIRED - - _ _ _ _ / / / \ I I o n �,
-� / / / 1 I �/ / / /
Qm j FOR GRADING / � � � / // // // ADDITIONAL GRUBBING REQUIRED I I � / / / / I I I I�
0 REFOLIATE PER LANDSCAPE PLAN / / / / / / / / FOR GRADING
Q� I' I I I\ 11 11 / / / / REFOLIATE PER LANDSCAPE PLAN
I I _ 32-41 R
I I I POST OFFICE LAND TRUST; / /' / / �1 I I I / I 1 1 / / 32-41 R
Y 7/I I 1 1 \ 1 I I I \ \ \\ / -- \ POST OFFICE LAND TRUST;
CHARLESWMHURT&SHIRLEY
/
FISHER TRUSTEES
FISHER TRUSTEES /
(V I I I \ \\ \ \ \ \ // // // (D.B. 1661, PG. 116)���/ _�/ ////--/ D.B. 1661, PG. 116 I / /
I I \ \ \ \ / / / ZONING: PLANNED DEVELOPMENT / / / / / / / / / _ / / ( ) 1 /
m I 1 \ \ \ \ \ / MIXED COMMERCIAL/// ZONING: PLANNED DEVELOPMENTi
MIXED COMMERCIAL I /
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SHEET
Key:
0
CONSTRUCTION SEQUENCE:
1. IDENTIFY PERMANENT STORMWATER BMP BOUNDARIES AND MARK CLEARLY.
2. INSTALL PAVED CONSTRUCTION ENTRANCE.
3. INSTALL SILT FENCING PRIOR TO CLEARING & GRUBBING AND GRADING.
4. CLEAR & GRUB TREES.
5. ROUGH GRADE DRIVE AREA TO SUB -GRADE, AND GRADE BUILDING PAD AREA TO
SUB -GRADE.
6. CONSTRUCT PUMP STATION.
7. ROUGH GRADE REMAINDER OF SITE.
8. INSTALL CHAIN LINK FENCE.
9. INSTALL PROPOSED UTILITIES.
10. INSTALL REQUIRED LANDSCAPING.
NOTE: BUILDING CONSTRUCTION, ROUGH GRADING, UTILITY INSTALLATION, CHAIN
LINK FENCE INSTALLATION AND LANDSCAPING MAY OCCUR CONCURRENTLY.
11. GRADE SITE TO FINAL ELEVATION AND RESTORE. FINAL GRADING AND
RESTORATION MAY BE COMPLETED CONCURRENTLY WITH ROUGH GRADING
ACTIVITIES.
12. REMOVE ALL TEMPORARY EROSION CONTROL MEASURES. ALL DAMAGE TO SITE
CAUSED BY SAID REMOVALS SHALL BE REPAIRED IN -KIND AND AT CONTRACTOR'S
EXPENSE.
13. CONSTRUCT PERMANENT STORMWATER BMP ONCE THE CONTRIBUTING
DRAINAGE AREA HAS BEEN STABILIZED AND PERIMETER E & S CONTROLS HAVE
BEEN REMOVED AND CLEANED OUT.
EROSION CONTROL NOTES:
1. ALL EROSION AND SEDIMENT CONTROL PRACTICES TO BE CONSTRUCTED AND
MAINTAINED IN CONFORMANCE OF THE VIRGINIA EROSION AND SEDIMENT
CONTROLHANDBOOK.
2. UNSTABILIZED SLOPES MUST BE TRACKED AT THE END OF EACH DAY TO
ROUGHEN THE SURFACE MEETING REQUIREMENTS OF SECTION 3.31 OF THE
VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK.
3. THE CONTRACTOR SHALL TAKE OWNERSHIP FOR ALL EXCESS MATERIAL AND BE
RESPONSIBLE FOR PROPERLY DISPOSING OF ALL EXCESS MATERIAL.
4. TEMPORARY STABILIZATION SHALL BE OBTAINED BY TEMPORARY SEEDING AND
MULCHING IN ACCORDANCE WITH STD. & SPECS 3.31 AND 3.35 OF THE VESCH.
TEMPORARY SEEDING AND MULCHING SHALL BE USED ON ANY DISTURBED
AREAS THAT SHALL NOT BE WORKED FOR MORE THAN 14 DAYS.
5. PERMANENT STABILIZATION SHALL BE OBTAINED BY PERMANENT SEEDING AND
SOIL STABILIZATION BALANKET & MATTING IN ACCORDANCE WITH STD. & SPEC.
3.32 AND 3.36. PLACEMENT OF SOIL STABILIZATION SHALL BE IN ACCORDANCE
WITH STANDARD PLATES 3.36-1 AND 3.36-2.
6. ADDITIONAL ESC BMP MEASURES TO BE INSTALLED WHEN REQUIRED BY
ALBEMARLE COUNTY.
`7. STOCKPILE AREA SHALL NOT EXTEND INTO PROPOSED PERMANENT
STORMWATER BMP AREA,
S. INSTALL TEMPORARY SEED, PERMANENT SEED, AND/OR EROSION MATTING IN
OPEN AREA FOR FUTURE GROUND STORAGE TANKS AS REQUIRED.
GENERAL NOTES:
1. CONTRACTOR SHALL RESTORE BASIN AND OPEN SPACE DISTURBANCE PER
ALBEMARLE COUNTY CODE AND STATE REQUIREMENETS.
2. ALL DISTURBED OPEN SPACES SHALL BE RESTORED WITH EROSION CONTROL
MATTING PER ALBEMARLE COUNTY CODE AND STATE REGULATORY
REQUIREMENTS.
3. CONTRACTOR MAY USE ALL OPEN SPACE FOR STAGING PURPOSES. AT MINIMUM
CONTRACTOR SHALL INSTALL SILT FENCE AROUND ANY CONTRACT
STOCKPILE/LAYDOWN AREA. CONTRACTOR SHALL INSTALL ALL REQUIRED
EROSION CONTROL PRACTICES PER VDOT SPECIFICATIONS IN ALL ANY AREAS
THAT REQUIRE ADDITIONAL GRADING NOT SHOWN PRIOR TO USE.
4. IF CONTRACTOR CHOOSES TO USE THE AREAS NOTED AS FUTURE GROUND
STORAGE TANKS FOR STAGING OR LAYDOWN, CONTRACTOR SHALL INSTALL
TEMPORARY STONE OVER GEOTEXTILE FABRIC PRIOR TO USE. ALL TEMPORARY
STONE SHALL BE REMOVED FOLLOWING THE COMPLETION OF CONSTRUCTION
ACTIVITIES AND THE AREA RESTORED IN -KIND.
IIIIIIIIIIIIIIIII I \ \ \ \ I
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IP O INLET PROTECTION I I TP I I I I INSTALL TREE
SEE SHEET C15 FOR DETAILS / I I I I 1 I PROTECTION BEHIND AND
I / I ` I -� I- I- SF- Tp PARALLEL TO SILT FENCE
LIMITS OF DISTURBANCE
IN
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(INSTALL SILT FENCE
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INSTALL SILT FENCE FOR I I SF I I cc 1 \ I 1 1 I BMP CONSTRUCTION
PUMP STATION I I I I 1 \ LO
CONSTRUCTION( I LO I
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SITE DATA
EXISTING/PROPOSED ZONING: RURAL AREAS DISTRICT
MAGISTERIAL:
EXISTING/PROPOSED USE:
WATERSHED:
OVERLAY DISTRICTS:
BUILDING SQUARE FOOTAGE:
NOTES:
CONTRACTOR SHALL REMOVE ALL TRASH AND DEBRIS FOUND ON SITE AS PART OF WORK.
ALL TRASH AND DEBRIS SHALL BE PROPERLY DISPOSED OF IN ACCORDANCE WITH STATE, /
COUNTY AND LOCAL REGULATIONS.
I \ \ I I I I I I I
132-41A3 I I I I I I I
I I \\ I \ \ \ \ \ \ DAVID P. TURNER & THE I I I I I I
I I \ \ I \ \\ IN,\\ \\ \ MARKET PLACE OF VIRGINIA LC I I I I I I I
I I I \\ I \\ \ \ \ \ (D.B. 4151, PG. 310) I I I I I I I
ZONING: RURAL AREAS I I I I I I I
/ 20 0 20 40
ENTRANCE CORRIDOR -AIRPORT IMPACT DISTRICT I I
f " I I I I I I I I I I I I I I I I I I I scale 10 feet
CN
PROPOSED WATER PUMP STATION - 1,209 SF /// / / / /'' I Ico co m cj
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COVERED GENERATOR PAD - 769 SF 'O m co
o o Ico 0 o N
O I Lo �00
SETBACKS: 250' MINIMUM FRONTAGE ALONG EXISTING PUBLIC ROAD
150' MINIMUM FRONTAGE ALONG INTERNAL PUBLIC ROAD
OR PRIVATE ROAD
75' FRONT SETBACK / / / 32-41A1 --4--
\ N,\ I I F— I— —I
25' SIDE SETBACK / /
LEASE AREA
36REARSETBACK / / CROWN COMMUNICATION INC
FRONT SETBACK NOTE: FRONT SETBACK SHOWN IS 75' FROM EXISTING PROPERTY LINE 1 / / (D.B. 4151, PG. 310)cli
RUNNING ROUGHLY PARALLEL TO EXISTING BERKMAR DR RIGHT-OF-WAY. PROPOSED / / ZONING: RURAL AREAS \ 1 o I I i
/ / / - I o I \ I I
BUILDING IS ALSO SET BACK AT LEAST 75' FROM THE ANTICIPATED VDOT RIGHT-OF-WAY REMOVE EXISTING � / / / / / I ��
FOR BERKMAR DR. TRASH/DEBRIS o I II I I I I I I \ I
/ 1
RIO DISTRICT
PUBLIC WATER FACILITY
POWELL CREEK
I I I I I I I I I I I I I I I I I
I I I I I I I I I I I I I I I I I
\ 1 1 1 1 1 1 1 1 till, 1 1
\I 1j11111111111 Id
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III�II�III1111111�1 I I \\
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32-41 D2 I \ \
/ MICROAIRE HOLDING \
/ I \
COMPANY LLC \ \I
(D.B. 5240, PG. 170)
ZONING: LIGHT INDUSTRY
CONTROL POINT \
� \\ \ HYDRANT TOP NUT \
\�\\\� \�\\\ \,EL=616.83 \\\-
CONTROL POINT o I 1 \ \ I \ \ \ \ I
NAIL o o I I \\ \\ \\ 1\ I\ \\ \\ \\ \
N 3935942.0420
I II i E 11500310.4600 11I ANTICIPATED VDOT GRADING EL=608.53 I II
EASEMENT (TYP) I 1I I \\ \ \ \\ I \ \ \ 32-\4\1H1X �I
II I STORAGE MANAGEMENT I LLC I
it l I �j / I Q�` 1 I I I I I I I I\ II (D.B. 1921, PG.423) I
II I I 1 ZONING: HIGHWAY COMMERCIAL I
EXISTING / it
CELL TOWER
CONTROL POINT I I I
2\\ i w N ^ coCONTROL POINT °Y�� �
INAIL
NAIL co N N 3935877.7030
N
2g N 3936050.7740 E 11500340.2300 1II I 1
E 11500044.1500 32-41A2 o EL = 599.30 1 II
I I
EL = 625.58 \ / I / / j �/ I 1 RIVANNA WATER AND SEWER 1 I I I I I I I 1 I I I I 1 I I
I I I // / I AUTHORITY I I 1 \ / 0 1 I I I I I I I I I 1 I I
CONTROL POINT // / / I/ I // // / (D.B. 4912, PG. 328) I / / / I II 1 I o I I 1 1 1 I I I I
I \ f o I
NAIL / -� -__ / / I / / / ZONING: RURAL AREAS CONTROL POINT I I / / / 1 1 1 1 / I I I I I I
N 3935996.9300 / ----� / / / % I / \ 1 1 `1 I I N I NAILco
I I I I
\\ / �- II / / / / / \I 11 + j 1 f i I E 11
E 11500080.2200 500294.3600
I I/ (� — / J / / / / /
\ I \ EL = 626.20 / I I I I / , I I I I EL = 605.11 I I I I
CONTROL POINT l I l j l I I I I I I I I I
--I---------��------- �/ I I / NAIL / / I I I I co
N 3935898.4050 / / / / 1 I I I I
E 11500220.5100
EL=613.14
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CLEAR & GRUBBING LIMITS (TYP)
/ / / / / / / / / / /,Qp` / / / / / / / / / / EXISTING WOODED AREA
APPROX. AREA= 48,000 SF / / 1
MIX OF DECIDUOUS & / 1
\ EVERGREEN TREES \ / 5y /
\ 1
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NAIL os 1 \ `rn 1
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co O I 1 I 1 �` / / / / / \ \ \ I 1 \ mooc000���c�o o rnrn h
r- ADDITIONAL GRUBBING REQUIRED - - _ _ _ _ / / / \ I I o n �,
-� / / / 1 I �/ / / /
Qm j FOR GRADING / � � � / // // // ADDITIONAL GRUBBING REQUIRED I I � / / / / I I I I�
0 REFOLIATE PER LANDSCAPE PLAN / / / / / / / / FOR GRADING
Q� I' I I I\ 11 11 / / / / REFOLIATE PER LANDSCAPE PLAN
I I _ 32-41 R
I I I POST OFFICE LAND TRUST; / /' / / �1 I I I / I 1 1 / / 32-41 R
Y 7/I I 1 1 \ 1 I I I \ \ \\ / -- \ POST OFFICE LAND TRUST;
CHARLESWMHURT&SHIRLEY
/
FISHER TRUSTEES
FISHER TRUSTEES /
(V I I I \ \\ \ \ \ \ // // // (D.B. 1661, PG. 116)���/ _�/ ////--/ D.B. 1661, PG. 116 I / /
I I \ \ \ \ / / / ZONING: PLANNED DEVELOPMENT / / / / / / / / / _ / / ( ) 1 /
m I 1 \ \ \ \ \ / MIXED COMMERCIAL/// ZONING: PLANNED DEVELOPMENTi
MIXED COMMERCIAL I /
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CONSTRUCTION SEQUENCE:
1. IDENTIFY PERMANENT STORMWATER BMP BOUNDARIES AND MARK CLEARLY.
2. INSTALL PAVED CONSTRUCTION ENTRANCE.
3. INSTALL SILT FENCING PRIOR TO CLEARING & GRUBBING AND GRADING.
4. CLEAR & GRUB TREES.
5. ROUGH GRADE DRIVE AREA TO SUB -GRADE, AND GRADE BUILDING PAD AREA TO
SUB -GRADE.
6. CONSTRUCT PUMP STATION.
7. ROUGH GRADE REMAINDER OF SITE.
8. INSTALL CHAIN LINK FENCE.
9. INSTALL PROPOSED UTILITIES.
10. INSTALL REQUIRED LANDSCAPING.
NOTE: BUILDING CONSTRUCTION, ROUGH GRADING, UTILITY INSTALLATION, CHAIN
LINK FENCE INSTALLATION AND LANDSCAPING MAY OCCUR CONCURRENTLY.
11. GRADE SITE TO FINAL ELEVATION AND RESTORE. FINAL GRADING AND
RESTORATION MAY BE COMPLETED CONCURRENTLY WITH ROUGH GRADING
ACTIVITIES.
12. REMOVE ALL TEMPORARY EROSION CONTROL MEASURES. ALL DAMAGE TO SITE
CAUSED BY SAID REMOVALS SHALL BE REPAIRED IN -KIND AND AT CONTRACTOR'S
EXPENSE.
13. CONSTRUCT PERMANENT STORMWATER BMP ONCE THE CONTRIBUTING
DRAINAGE AREA HAS BEEN STABILIZED AND PERIMETER E & S CONTROLS HAVE
BEEN REMOVED AND CLEANED OUT.
EROSION CONTROL NOTES:
1. ALL EROSION AND SEDIMENT CONTROL PRACTICES TO BE CONSTRUCTED AND
MAINTAINED IN CONFORMANCE OF THE VIRGINIA EROSION AND SEDIMENT
CONTROLHANDBOOK.
2. UNSTABILIZED SLOPES MUST BE TRACKED AT THE END OF EACH DAY TO
ROUGHEN THE SURFACE MEETING REQUIREMENTS OF SECTION 3.31 OF THE
VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK.
3. THE CONTRACTOR SHALL TAKE OWNERSHIP FOR ALL EXCESS MATERIAL AND BE
RESPONSIBLE FOR PROPERLY DISPOSING OF ALL EXCESS MATERIAL.
4. TEMPORARY STABILIZATION SHALL BE OBTAINED BY TEMPORARY SEEDING AND
MULCHING IN ACCORDANCE WITH STD. & SPECS 3.31 AND 3.35 OF THE VESCH.
TEMPORARY SEEDING AND MULCHING SHALL BE USED ON ANY DISTURBED
AREAS THAT SHALL NOT BE WORKED FOR MORE THAN 14 DAYS.
5. PERMANENT STABILIZATION SHALL BE OBTAINED BY PERMANENT SEEDING AND
SOIL STABILIZATION BALANKET & MATTING IN ACCORDANCE WITH STD. & SPEC.
3.32 AND 3.36. PLACEMENT OF SOIL STABILIZATION SHALL BE IN ACCORDANCE
WITH STANDARD PLATES 3.36-1 AND 3.36-2.
6. ADDITIONAL ESC BMP MEASURES TO BE INSTALLED WHEN REQUIRED BY
ALBEMARLE COUNTY.
`7. STOCKPILE AREA SHALL NOT EXTEND INTO PROPOSED PERMANENT
STORMWATER BMP AREA,
S. INSTALL TEMPORARY SEED, PERMANENT SEED, AND/OR EROSION MATTING IN
OPEN AREA FOR FUTURE GROUND STORAGE TANKS AS REQUIRED.
GENERAL NOTES:
1. CONTRACTOR SHALL RESTORE BASIN AND OPEN SPACE DISTURBANCE PER
ALBEMARLE COUNTY CODE AND STATE REQUIREMENETS.
2. ALL DISTURBED OPEN SPACES SHALL BE RESTORED WITH EROSION CONTROL
MATTING PER ALBEMARLE COUNTY CODE AND STATE REGULATORY
REQUIREMENTS.
3. CONTRACTOR MAY USE ALL OPEN SPACE FOR STAGING PURPOSES. AT MINIMUM
CONTRACTOR SHALL INSTALL SILT FENCE AROUND ANY CONTRACT
STOCKPILE/LAYDOWN AREA. CONTRACTOR SHALL INSTALL ALL REQUIRED
EROSION CONTROL PRACTICES PER VDOT SPECIFICATIONS IN ALL ANY AREAS
THAT REQUIRE ADDITIONAL GRADING NOT SHOWN PRIOR TO USE.
4. IF CONTRACTOR CHOOSES TO USE THE AREAS NOTED AS FUTURE GROUND
STORAGE TANKS FOR STAGING OR LAYDOWN, CONTRACTOR SHALL INSTALL
TEMPORARY STONE OVER GEOTEXTILE FABRIC PRIOR TO USE. ALL TEMPORARY
STONE SHALL BE REMOVED FOLLOWING THE COMPLETION OF CONSTRUCTION
ACTIVITIES AND THE AREA RESTORED IN -KIND.
IIIIIIIIIIIIIIIII I \ \ \ \ I
I \
IIII II II II II II I I I I I I I I ANTICIPATED VDOT \ \\ II
I I I I I I I I I I I I I I I RIGHT-OF-WAY \ \ I
/// IIIIIIIIII I I
I EROSION CONTROL MAT (TYP) I ''
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EROSION CONTROL LEGEND I I I I \ \ \ I I I I I I I I I I I
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EROSION MAT (EM)
TRM PERMANENT E I SLOPE MATTINGTURF
O\ I I \ \ \ \ \\ \ \ I I I I I I I I I I I
CE CONSTRUCTION ENTRANCE - PAVED \ I I 1 \\ \ \\ \\ \ \\ \ \ I I I I I I I I I I
\\ I\\ I \\ \ \\ \ \ \ \ \ \ 1\ I I I I I I I I I I I I
SF SILT FENCE II NI
TEMPORARY I \\ \\ \\ \\ \\ \\ \\ \\ \\ \ I I I I I I I
TS TEMPORARY SEEDING
PS PERMANENT SEEDING J 623' I i 11 \I \I 11 I I zo o zo ao
/' f r I I I I I I I I I I I I I I I I I I I scale fo feet
CIP CULVERT INLET PROTECTION / N N I
I `°
TP TREE PROTECTION I I I I I I I
I o I I I I I I I I I I I I
i o DC 0, DUST CONTROL I I I I I I I I I `c 0)° 0 /
� h
PROPOSED LANDSCAPING I I I I I I I I I I I I
IP O INLET PROTECTION I I TP I I I I INSTALL TREE
SEE SHEET C15 FOR DETAILS / I I I I 1 I PROTECTION BEHIND AND
I / I ` I -� I- I- SF- Tp PARALLEL TO SILT FENCE
LIMITS OF DISTURBANCE
IN
MODIFIED
MMT MODIFIED MUD TRAP Tp, I I I I I \\
`O OTS PSI I I I I III
(INSTALL SILT FENCE
o/ J I I I I TRM I I x AFTER STABILIZATION OF
SITE FOR STORMWATER
INSTALL SILT FENCE FOR I I SF I I cc 1 \ I 1 1 I BMP CONSTRUCTION
PUMP STATION I I I I 1 \ LO
CONSTRUCTION( I LO I
I 1 0 l I \\ \ 1 I \ \
ANTICIPATED VDOT GRADING I 1 I I o I I\\\ \\ \ I
EASEMENT(TYP) I li t� / l / I I I I I��o;ro� I to '� �I o 1 \ ( \ \\ \\ I
/ l I J l / I I I I I l o I� IN l o �°' I EM I o II I INSTALL TREE \ I
x l 1 I I I 1I,, I I �Jo I PS `Oi UyI I I \ PROTECTION BEHIND AND \ I
EM Jpg I I TS I I I I I 1 PARALLEL TO SILT FENCE i I
of I \ ► I \ I I I 1
EXISTING l / 11 I 1 \ I I\ \ 1 1 I l / IfI I PS TRM I I I \ \ I I I
CELL TOWER I / l i I 1 \t SPACE FOR / I I MMT
I Ix I I I ANTICIPATED FUTURE l J/ 1 I I I TS I I I I I \ I I I I I 1 I
GROUND STORAGE 1 \ I I I I I I SF I I I DI I I I I I I I
TANKS
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�/ AREA TS I I II ''a04 I RESTORATION DETAILS 1 1 I I
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FOR INSTALLATION - 2.5:1 SIDE SLOPES WILL BE/
ALLOWED IN THIS TEMPORARY GRADING AREA / // / / / I \ I / / /
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= 41+90.47, 3.79' L
GRADE BREAK
STA = 41+90.49, 1.19' R
LADE BREAK
A = 41+39.35, 0.15' R
/10LF16"DIP@0.00°
/16 " GATE VALVE & BOX
STA = 44+61.70, 5.73' L-
16"I E = 611.77
3LF16"DIP@3.20%-
6" x 16" TEES
AND GRADE BREAK1
STA = 44+61.49, 5.00' L
i x Xr /Y /
16 " GATE VALVE & BOX
STA = 44+58.48, 4.98' L
24 900 BEND
STA
AANDGRADE BREAK
4+ 6.70, 0 02' R
i
16 " PLUG
STA = 44+61.70, 13.76'
16"I E = 611.77
24 " GATE VALVE & BOX y \
STA = 45+69.67, 5.00' R \
AIR RELEASE
VALVE ASSEMBLY
STA = 45+75.67, 5.010' R
24" x 24" TEE
STA = 46+01.33, 5.00' R
24 " GATE VALVE & BOX �!
STA = 46+06.30, 5.00' R
_r 24 "PLUG
STA = 46+11.33, 5.0 '' R
16 " 900 BEND 7� '
AND GRADE BREAK
STA = 45+75.67, 0.00'
A6"DIP@0.00%6"900 BENDTA = 45+75.67, 48.17'=619.29
3LF16"DIP@0.00%AB06
16" CONNECTION
X x AT BUILDING
STA = 45+78.83, 48.17'L
16"IE = 619.29
S
.2 CONNECTION
Z-AT BUILDING
STA = 46+01.33, 7.00' L
24"I E = 618.44
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PROP PUMP STATION AREA
GROUND PROFILE (TYP)
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44+00
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46+00 46+25
PUMP STATION
SEE PLAN SHEETS
C08-C14 FOR
ADDITIONAL DETAILS
40 0 40 80
scale 20 feet
CONSTRUCTION NOTES:
1. CONTRACTOR SHALL VERIFY LOCATION AND ELEVATION OF
EXISTING UTILITY CONNECTION POINTS PRIOR TO
CONSTRUCTION.
2. ALL PIPES SHALL HAVE 3.5' MIN. COVER. ANY AREAS UNABLE
TO MEET 3.5' MIN. COVER SHALL BE INSULATED PER RIVANNA
WATER & SEWER AUTHORITY SPECIFICATIONS.
3. CONTRACTOR SHALL OBTAIN ALL REQUIRED CONSTRUCTION
PERMITS PRIOR TO CONSTRUCTION.
4. SEE SHEETS TC01-TC04 FOR TRAFFIC CONTROL DETAILS.
5. SEE SHEETS C01-0O2 FOR EROSION CONTROL DETAILS.
6. ALL PAVEMENT MARKINGS SHALL BE REPLACED IN -KIND.
7. MINIMUM SEPARATION BETWEEN PROPOSED WATER MAIN
AND EXISTING UTILITIES SHALL BE 18" ABOVE AND BELOW.
8. 16" WM TO RUN PARALLEL AND MATCH TOP OF PIPE
ELEVATION OF 24" WM FROM STA 37+78t TO 45+65t.
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= 41+90.47, 3.79' L
GRADE BREAK
STA = 41+90.49, 1.19' R
LADE BREAK
A = 41+39.35, 0.15' R
/10LF16"DIP@0.00°
/16 " GATE VALVE & BOX
STA = 44+61.70, 5.73' L-
16"I E = 611.77
3LF16"DIP@3.20%-
6" x 16" TEES
AND GRADE BREAK1
STA = 44+61.49, 5.00' L
i x Xr /Y /
16 " GATE VALVE & BOX
STA = 44+58.48, 4.98' L
24 900 BEND
STA
AANDGRADE BREAK
4+ 6.70, 0 02' R
i
16 " PLUG
STA = 44+61.70, 13.76'
16"I E = 611.77
24 " GATE VALVE & BOX y \
STA = 45+69.67, 5.00' R \
AIR RELEASE
VALVE ASSEMBLY
STA = 45+75.67, 5.010' R
24" x 24" TEE
STA = 46+01.33, 5.00' R
24 " GATE VALVE & BOX �!
STA = 46+06.30, 5.00' R
_r 24 "PLUG
STA = 46+11.33, 5.0 '' R
16 " 900 BEND 7� '
AND GRADE BREAK
STA = 45+75.67, 0.00'
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3LF16"DIP@0.00%AB06
16" CONNECTION
X x AT BUILDING
STA = 45+78.83, 48.17'L
16"IE = 619.29
S
.2 CONNECTION
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24"I E = 618.44
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620
PROP PUMP STATION AREA
GROUND PROFILE (TYP)
36 LF 24
DIP
@0.70%
, e,°e-100
. .
CONCEPTUAL FUTURE GROUND
/
00.
. . . . •
PROFILE OVER WATER MAIN
• .
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:
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GROUND PROFILE (TYP)
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43+00
44+00
45+00
46+00 46+25
PUMP STATION
SEE PLAN SHEETS
C08-C14 FOR
ADDITIONAL DETAILS
40 0 40 80
scale 20 feet
CONSTRUCTION NOTES:
1. CONTRACTOR SHALL VERIFY LOCATION AND ELEVATION OF
EXISTING UTILITY CONNECTION POINTS PRIOR TO
CONSTRUCTION.
2. ALL PIPES SHALL HAVE 3.5' MIN. COVER. ANY AREAS UNABLE
TO MEET 3.5' MIN. COVER SHALL BE INSULATED PER RIVANNA
WATER & SEWER AUTHORITY SPECIFICATIONS.
3. CONTRACTOR SHALL OBTAIN ALL REQUIRED CONSTRUCTION
PERMITS PRIOR TO CONSTRUCTION.
4. SEE SHEETS TC01-TC04 FOR TRAFFIC CONTROL DETAILS.
5. SEE SHEETS C01-0O2 FOR EROSION CONTROL DETAILS.
6. ALL PAVEMENT MARKINGS SHALL BE REPLACED IN -KIND.
7. MINIMUM SEPARATION BETWEEN PROPOSED WATER MAIN
AND EXISTING UTILITIES SHALL BE 18" ABOVE AND BELOW.
8. 16" WM TO RUN PARALLEL AND MATCH TOP OF PIPE
ELEVATION OF 24" WM FROM STA 37+78t TO 45+65t.
w � o
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My determination of opography w conMUB, or any deplctlm or physical Improvements, properly lines or MUMaros Is Imperial Information on y aM snail ml ce uae0 kr pie design, mMlflcallm, or construction Mmprovemema to real pmpaty rctrc noM plan determination. Januay, 27, 2021
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c 56 N o 5 om z. `
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My determination of topography or mMaurs, or any Jepiclion of physical Improvements, property lines or Inchworms as for general Intmmalion only and shall hot ne used her Me design, mMlPfallon, or mmtmNon so Improvements to real property orfor Pow plain Jeadminalion. January 27, 2021
Map element may scale larger man GIG data measured in the map or as provided on the data tlowoned page due to Me protection use]. Map ProjectionMal wen Mercator (FUMIIary SpMre) (EPSG 3957)
Appendix C
VRRM Quality
OFQViMinia RunGffReduction Medmd NewOmlopmentr pliameSpre ahets-Version3.0
❑2011 BMP Standards and Specifications p.2013 Door BMPsfendaMs and SpeciOcatbM
Project Name: Airport Road Pump Station -Quality
Date: 1/13/2021
BMV Dart, spedPeouons tlsr 2013 Draft Stilt & Specs
Site Information
Post -Development Project (Treatment Volume and Loads)
Used Cover (acres)
A soils
9Sells
c5olls
O5olls
Tmals
Forest/open spare(aoes)-undisturbed,
e rred mrert/n ear reforested land
noon
Managed Tod (acres) f disturbed, graded for
rds or Mner tuff toine mnwed/mana ed
1.01
local
ImpervaseowrlaoeF)
o.le
d.1s
1.19
Constants Runoff CoefOciends(Rut)
Annual uamrall Choose) 43 rl sons Bsdis eSdN oSpYs
Target Raman.. gainers) 1.00 ._-110penspare n—M o.03 ap6 o.BS
Tntel PurchasesM)EMC(mi Di I Managd!Turt dogs 1 need azz o.zs
Total Rttri 0n) EMC(mi 1.85 ImperviousWber Di 0.95 M95 1 d.95
Tar gm lP lead(Hurcr4Yr) 0.41
Pi (unitle:s correction faces) 0.90
Fored/Open Spare Closer (acres)
dad
Weighted M(feresr)
dad
is Faced
0%
Managed Turf grant(aeres)
Lill
WeIBMed Rv(bri
0.25
%Managed Turf
85%
ImpervlousCwer(acres)
D.18
By (impervious(
0.95
%Impervious
15%
Sttemea(gromi
1.19
Straight
0%
Treatment Volume and nMrions Loads
Treatment Volume
(acre-h)
0.0353
TreatmeMVolume(mbie er)
1,537
TP Load (Mal
0.97
TN Wad(li
6.91
Informational Pur sus Cl
data InpM cells
mnstamnluez
calculMlon [ells
DEQ Virginia Runoff Reduction Method New Development Compliance Spreadsheet -Version 3.0
BMP Design Specifications List: 2013 Draft Stds & Specs
Site Summary Project Title: Airport Road Pump Station - Quality
Date: 44209
Total Rainfall = 43 inches
Site Land Cover Summary
A soils
BSoils
CSoils
DSoils
Totals
%of Total
Forest/Open (acres)
0.00
0.00
0.00
0.00
0.00
0
Managed Turf (acres)
0.00
0..
0.00
1.01
1.01
85
Impervious Cover (acres)
0.00
0.00
0.00
0.18
0.18
15
1.19
100
Site Tv and Land Cover Nutrient Loads
Site Rv
0.36
Treatment Volume (ft')
1,537
TP Load (lb/yr)
0.97
TN Load (lb/yr)
6.91
Total TP Load Reduction Required (lb/yr) 0.48
Site Compliance Summary
Total Runoff Volume Reduction (ft3)
0
Total TP Load Reduction Achieved (lb/yr)
0.00
Total TN Load Reduction Achieved (lb/yr)
0.00
Remaining Post Development TP Load
0.97
(lb/yr)
Remaining TP Load Reduction (lb/yr)
Required
0 .48
Drainage Area Summary
D.A. A
D.A. B
DA. C
DA. D
D.A. E
Total
Forest/Open (acres)
0.00
0.00
0.00
0.00
0.00
0.00
Managed Turf (acres)
0.00
0.00
0.00
0.00
0.00
0.00
Impervious Cover (acres)
0.00
0.00
0.00
0.00
0.00
0.00
Total Area (acres)
0.00
0.00
0.00
0.00
0.00
0.00
Drainage Area Compliance Summary
D.A. A I D.A. B I DA. C D.A. D I D.A. E Total
TP Load Reduced (lb/yr)
0.00
0.00
0.00
0.00
0.00
0.00
TN Load Reduced (lb/yr)
0.00
0.00
0.00
0.00
1 0.00
0.00
Drainage Area A Summary
Land Cover Summary
A Soils
BSoils
CSoils
DSoils
Total
%of Total
Forest/Open (acres)
0.00
0.00
0.00
0.00
0.00
0
Managed Turf (acres)
0.00
0.00
0.00
0.00
0.00
0
Impervious Cover (acres)
0.00
0.00
0.00
0.00
0.00
0
0.00
BMP Selections
Managed Turf
Impervious Cover
TP Load from
Downstream
Practice
Credit Area
Credit Area
I
BMP Treatment
Upstream
Untreated TP Load
I
TP Removed
I
TP Remaining
I
Treatment to be
I
Volume (ft)
I
to Practice (Ibs)
(Ib/yr)
(lb/yr)
(acres)
Practices(lbs)
Employed
Total Impervious Cover Treated(acres)
0.00
Total Turf Area Treated (acres)
0.00
Total TP Load Reduction Achieved in D.A.
(lb/yr)
0.00
Total TN Load Reduction Achieved in D.A.
(lb/yr)
0.00
Drainage Area B Summary
Land Cover Summary
A Soils
BSoils
CSoils
DSoils
Total
%of Total
Forest/Open (acres)
0.00
0.00
0.00
0.00
0.00
0
Managed Turf (acres)
0.00
0.00
0.00
0.00
0.00
0
Impervious Cover (acres)
0.00
0.00
0.00
0.00
0.00
0
1 0.00
BMP Selections
Managed Turf
Impervious Cover
TP Load from
Downstream
Practice
Credit Area
Credit Area
I
BMP Treatment
Upstream
Untreated TP Load
I
TP Removed
I
TP Remaining
I
Treatment to be
I
Volume (ft)
I
to Practice (Ibs)
(Ib/yr)
(lb/yr)
(acres)
Practices(lbs)
Employed
Totallmpervious Cover Treated (acres)
0.00
Total Turf Area Treated (acres)
0.00
Total TP Load Reduction Achieved in D.A.
0.00
(lb/yr)
iTotal TN Load Reduction Achieved in D.A. 0.00
/yr)
Drainage Area C Summary
Land Cover Summary
A Soils
BSoils
CSoils
DSoils
Total
%of Total
Forest/Open (acres)
0.00
0.00
0.00
0.00
0.00
0
Managed Turf (acres(
0.00
0.00
0.00
0.00
0.00
0
Impervious Cover (acres(
0.00
0.00
0.00
0.00
0.00
0
0.00
BMP Selections
Managed Turf
Impervious Cover
BMP Treatment
TPLoadfrom
Untreated TP Load
TP Removed
TP Remaining
Downstrea7be
Practice
Credit Area
Credit Area
Volume (k (
Upstream
to Practice (Ibs)
(lb/yr)
(Ib/yr)
Treatment tc
(acres(
(acres)
Practices(lbs)
Employed
Total Impervious Cover Treated (acres)
0.00
Total Turf Area Treated (acres)
0.00
Total TP Load Reduction Achieved in D.A.
0.00
(lb/yr)
Total TN Load Reduction Achieved in D.A.
0.00
(lb/yr)
Drainage Area D Summary
Land Cover Summary
A Soils
BSoils
CSoils
DSoils
Total
%of Total
Forest/Open (acres)
0.00
0.00
0.00
0.00
0.00
0
Managed Turf (acres)
0.00
0.0o
0.00
0.00
0.00
0
Impervious Cover (acres)
0.00
0.00
0.00
0.00
0.00
0
0.00
BMP Selections
Managed Turf
Impervious Cover
TPLoad from
Downstream
Practice
Credit Area
Credit Area
I
BMP Treatment
Upstream
Untreated TP Load
I
TP Removed
I
TP Remaining
I
Treatment to be
I
Volume (ft)
I
to Practice (Ibs)
(Ib/yr)
(lb/yr)
(acres)
(acres)
Practices(lbs)
Employed
Total Impervious Cover Treated(acres)
0.00
Tot al Turf Area Treated(acres)
0.00
Total TP Load Reduction Achieved in D.A.
0.00
(lb/yr)
Total TN Load Reduction Achieved in D.A. 0.00
(Ib/yr)
Drainage Area E Summary
Land Cover Summary
A Soils
BSoils
CSONS
DSoils
Total
%of Total
Forest/Open (acres)
0.00
0.00
0.00
0.00
0.00
0
Managed Turf (acres)
0.00
0.00
0.00
0.00
0.00
0
Impervious Cover (acres)
0.00
0.00
0.00
0.00
0.00
0
1 0.00
BMP Selections
Managed Turf
Impervious Cover
BMP Treatment
TP Load from
Untreated TP Load
TP Removed
TP Remaining
Downstream
Practice
Credit Area
Credit Area
s
Volume (ft (
Upstream
to Practice (Ibs)
(Ib/yr)
(Ib/yr)
Treatment to be
(acres(
(acres)
Practices(lbs)
Employed
Total Impervious Cover Treated (acres)
0.00
Total Turf Area Treated (acres)
0.00
Total TP Load Reduction Achieved in D.A.
0.00
(lb/yr)
Total TN Load Reduction Achieved in D.A.
0.00
(lb/yr)
.................._.._.._.._.._.._.._.._.._.___._.._.._.._.._.._.._.._._._.._.._.._.._.._.._.._.._._.._.._.._..-________.
Runoff Volume and CN Calculations
1-year storm 2-year storm 10-yearstorm
Target Rainfall Event in 1.44 1 3.68 5.57
Drainage Areas
RV&CN
Drainage Area
Drainage Area
Drainage Area
Drainage Area
Drainage Area
CN
0
0
0
0
0
RR (fts)
0
0
0
0
0
1-year return period
RV wo RR (ws-in)
0.00
0.00
0.00
0.00
0.00
RV w RR(.4n)
0.00
0.00
0.00
0.00
0.00
CN adjusted
0
0
0
0
0
2-year return period
RV wo M (ws-in)
0.00
0.00
0.00
0.00
0.00
RV w RR (.in)
0.00
0.00
0.00
0.00
0.00
CN adjusted
0
0
0
0
0
10-year return period
RV wo RR (ws-In)
1 0.00
1 0.00
1 0.00
0.00
0.00
RVw RR(m-in)
0.00
0.00
0.00
0.00
0.00
CN adjusted
0
0
0
10
0
Appendix D
East Drainage Areas
Prepared By
Date of Calculations
Client
Project Name
Description
Reviewer
Date Reviewed
Table 1: Drainage Area Calculations
Maria McCarty
9/2/2021
RSWA
Airport Road Pump Station - East Watershed
Flood Protection - SCS Graphical Peak Discharge
SEH
Building a Better work
for All of Us'
10yr 24hr storm
Predevelopment
Post development
CN
[ac]
[ac]
Impervious
98
0.00
0.10
Grassed
80
0.07
0.89
Wooded
77
1.08
0.16
Total
1.15
1.15
Table 2: Runoff Depth T, [hr]: 0.08
units Predeveloped Developed
10-yr (24hr) precipitation (P) in
5.57
5.57
Composite CNa
77
81
Storage Capacity (S) in
3.0
2.4
Initial Abstraction (la) in
0.60
0.47
Runoff Depth(Q) in
3.1
3.5
a Composite CN value for "post development with treatment" obtained from Virginia RRM Spreadsheet, Runoff
Volume and CN tab
Table 3: Unit Peak
units Predeveloped Developed
Initial Abstraction (la)b in 0.60 0.47
la/P 0.110 0.080
Unit Peak Discharge (qu)` csm/in 998 1005
b Values interpolated from Table 4-1
`Values obtained from Exhibit 4-II. Unit Peak Discharge for NRCS (SCS) type II rainfall distribution
SCS Graphical Peak Discharge 1 of 4
Table 4: Peak Discharge
units Predeveloped Developed
Drainage area (Am) mil 0.0018 0.0018
Pond and Swamp adjustment factor (FP) 1 1
Peak Discharge (qu) cfs 5.6 6.3
Table 5: Min Storage Volume Required
Units
Peak outflow discharge (qo) cfs
5.6 Predeveloped peak discharge
Peak inflow discharge (qi) cfs
6.3 Developed peak discharge
qo/qi
0.89
Runoff volume (Vr) acre-ft
0.3
Vs/Vrd
0.18
Vs acre-ft
0.054
Requred storage (Vs) cf 2352
from Figure 6-1. Approximate detention basin routing for rainfall types I, IA, II, and III
Peak outflow discharge (qo)
cfs
4.3 Predeveloped with storage peak discharge
Peak inflow discharge (qi)
cfs
6.3 Developed peak discharge
qo/qi
0.68
Runoff volume (Vr)
acre-ft
0.3
V,/Vrd
0.22
Vs
acre-ft
0.065
Requred storage (Vs)
cf
2826 from level spreader sizing
dValues from Figure 6-1. Approximate detention basin routing for rainfall types I, IA, II, and III
qp = peak discharge (cfs) (gyp = QuAmQFp
qu = unit peak discharge (csm/m)
Am = drainage area (mil)
Q = runoff (in)
Fp= pond and swamp adjustment factor
V Vr = 53.33Q(�) [eq. 6-1]
s where
Vs = Vr Vr [eq. 6-2] V, = runoff volume (acre-ft)
where Q = runoff (in)
V, = storage volume required acre-ft . A. = conversageion
area factor
and
� � � � 63.33 =conversion factor from in-miz
to acre-ft.
SCS Graphical Peak Discharge 2 of 4
Exhibit 4-ll Unit peal discharge (q,) for NRCS (SCS) type R rainfall distribution
r
f
E
E
c'
Time of concentration (Tr), (hours)
Figure 6.1 Approximate detention basin muting for rair fWd types 1, M ❑, and W
8
.5
> k .4
MMM mom OEM 00 WOM EM M I M
INIMIN
ME
MMM
MMM
MMM
MMM
MMMMMMMMM
MMMMMMMMMMMM
MMMMMMMMMMMMI
mmmmm
MMMMMMM
MMMMMMMIMMMMMMIMM
MMMMMMMMMMMMMMM
.2 .3 .4 .5 .6 ,7 .8
Peak outllow discharge CIO
Peak inllow discharge ( qi
I
SCS Graphical Peak Discharge 3 of 4
Prepared By Maria McCarty
Date of Calculations 9/2/2021
Client RSWA
Project Name Airport Road Pump Station - East Watershed
Description Level Spreader
Reviewer
Date Reviewed
Table 1: Drainage Area Land Use Characteristics
Area (ac)
CN
Rv
Forested
0.16
77
0.05
Pervious
0.66
80
0.25
Impervious
0.10
98
0.95
Total
0.92
81
0.29
Table 2: Volume Calculation
SEH
Building a Better World
for All of Us"
Minimum Surface Area
Sf
8.7 0.2% of contributing Impervious Area
Minimum Width
ft
7.0
Design Width
ft
10
Design Level Spreader Length
ft
170
Maximum Depth
ft
3
Depth @ level spreader
ft
0.5
Volume Provided
cf
2826.25
Table 3: Peak Sheet Flow
Predeveloped
Developed w/ Storage
Peak Flow, 10-yr 24-hr
cfs 5.6
4.30 from SCS Graphical Peak 10
sheet flow width
If 218
170
Peak Sheet Flow
cfs/If 0.026
0.025
Table 4: Outfall velocity
Q 10 yr peak flow =
4.30 cfs
L =
170 ft
H =
-ft
adjust so Q = Q 10 yr
C =
15.99
C = 2/3*(2*g)A1/2*Cd
Cd =
2.99
Q =
4.3 cfs
Q = C*L*HA(3/2)
V = 1.86 ft/s V = Q/A
Level Spreader 4 of 4
Appendix E
West Drainage Areas
Prepared By
Date of Calculations
Client
Project Name
Description
Reviewer
Date Reviewed
Table 1: Drainage Area Calculations
Maria McCarty
1/27/2021
RSWA
-o .
SEH
Building a Better World
for All of Us°
Airport Road Pump Station - West Watershed 1%
2 yr & 10 yr Runoff Calculations
Ca Predevelopment Post development
[ac] [ac]
Impervious 0.90 0.53 0.62
Grassed - Steep slopes
Wooded
0.28 0.49 0.64
0.21 0.33 0.09
Total 1.35 1.35
a: Table 4-5 of the VSWMH, 1999 edition. D soil conditions with greater than 6% slope.
Table 2: Rational Method Calculations
Tc [min]: 5.0
Units
Predevelopment
Post development
Composite C
0.51
0.56
2-yr Intensity (1)
in/hr
5.04
5.04
10-yr Intensity (1)
in/hr
6.64
6.64
2-yr Peak Flow (Q)
cfs
3.47
3.81
10-yr Peak Flow (Q)
Change in Q at 10 yr event
Q
cfs 4.57
5.02
Where: Q = discharge (cfs)
C = runoff coefficient representing a ratio of runoff to rainfall
I = rainfall intensity (in/hr)
A = drainage area (acres)
2 yr 10 yr Runoff Calculations 1 of 3
Table 3: Manning'
Pipe Size (in)
Pipe Slope, So (%)
Storm Drains at Laurel Park Ln
15
1.15
Pipe Material RCP
Manning's Constant, k 1.49
Manning's Roughness Coefficient, n
0.013
Area, A (sf)
1.23
Perimeter, P (ft)
3.93
Hydraulic Radious, Rh (ft)
0.31
RhA(2/3)
0.46
SoA11/51
0.11
Flow, Q (cfs) 6.93 > 10 year post development flow of 5.02
Q=VA= 1.49 AR'.Ts- LUSI
n
2 yr 10 yr Runoff Calculations 2 of 3
-o .
Prepared By Maria McCarty SEH
Date of Calculations 1/27/2021 Building a Better World
Client RS WA for All of Us°
Project Name Airport Road Pump Station - West Watershed
Description 2 yr & 10 yr Runoff Calculations
Reviewer
Date Reviewed
Table 1: Drainage Area Calculations
Ca Predevelopment Post development
[ac] [ac]
Impervious 0.90 24.1 24.2
Grassed - Steep slopes
Wooded
0.28 21.4 21.5
0.21 0.5 0.3
Total 46.00 46.00
a: Table 4-5 of the VSWMH, 1999 edition. D soil conditions with greater than 6% slope.
Table 2: Rational Method Calculations
Tc [min]: 5.0
Units
Predevelopment
Post development
Composite C
0.60
0.605717391
2-yr Intensity (1)
in/hr
5.04
5.04
10-yr Intensity (1)
in/hr
6.64
6.64
2-yr Peak Flow (Q)
cfs
139
140
10-yr Peak Flow (Q)
Change in Q at 10 yr event
Q =CIA
cfs 183
Where: Q = discharge (cfs)
C = runoff coefficient representing a ratio of runoff to rainfall
I = rainfall intensity (in/hr)
A = drainage area (acres)
185
2 yr 10 yr Runoff Calculations 3 of 3
Appendix F
E&S Design
Prepared By
Date of Calculations
Client
Project Name
Description
Reviewer
Date Reviewed
Maria McCarty
9/2/2021
RSWA
Airport Road Pump Station - East Watershed
Silt Fence
SEH
Building a Better World
for All of Us'
Fence
Area
Area /
Drainage
Driange
Fence Number
Length (ft)
Drained (ac)
100 ft
length (ft)
Slope notes
East drainage, Pump
using reinforced silt fence
Station
276
0.69
0.25
—100
10% and modified mud trap
East drainage,
Stormwater BMP
276
0.22
0.08
—55
15% usine reinforced silt fence
Silt Fence 1 of 1
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