HomeMy WebLinkAboutWPO202200049 Plan - VSMP 2022-11-22RAADI C1A1f%f%r% r%CXICI f%DRACRIV
GENERAL NO
OWNERS: TMP046B4-00-00-00400
JA-ZAN LIMITED PARTNERSHIP
PO BOX 9035
CHARLOTTESVILLE, VA 22906
DEVELOPER:
RIVERBEND DEVELOPMENT
455 SECOND STREET SE, SUITE 400
CHAR LOTTESVILLE, VA 22902
ENGINEER:
COLLINS ENGINEERING
2oo GARRETT ST, SUITE K
CHARLOTTESVILLE, VA 22902
TAX MAP:
TMP046B4-00-00-00400
D.B. 3522, PG. 394-23.2 (PLAT)
3.4iACRES
ZONING:
PRID (PLANNED RESIDENTIAL DEVELOPMENT) - (ZMA-2021-00006), CONTAINING THE FOLLOWING:
ENTRANCE CORRIDOR OVERLAY DISTRICT, MANAGED STEEP SLOPES OVERLAY DISTRICT, & AIRPORT IMPACT AREA OVERLAY DISTRICT.
THESE OVERLAY DISTRICTS WERE NOT REVISED AS PART OF THE APPROVED ZMA.
TOTAL PROJECT AREA:
3.4iACRES
PROPOSED USE:
72 MULTI -FAMILY RESIDENTIAL UNITS (ONE AND TWO BEDROOM UNITS)
(36) ONE BEDROOM UNITS
(36) TWO BEDROOM UNITS
PROPOSED DENSITY:
72 RESIDENTIAL MULTI -FAMILY UNITS WITHIN 3.43. ACRES
DENSITY = 72/3-41 ACRES
DENSITY= 21.1 DUA
OPEN SPACE:
25% OPEN SPACE IS PROPOSED WITH THE DEVELOPMENT. THE OPEN SPACE SHALL INCLUDE THE AMENITY AREAS AND BUFFERS
AROUND THE PERIMETER OF THE PROJECT. NO DEDICATED OPEN SPACE IS PROPOSED WITH THE DEVELOPMENT AND THE OPEN
SPACE SHALL BE OWNED AND MAINTAINED BY THE HOMEOWNER'S ASSOCIATION.
BUILDING HEIGHTS:
NO MINIMUM HEIGHT AND 4 STORIES MAXIMUM HEIGHT (65'MAXIMUM HEIGHT). NOTE, A STEPBACK REDUCTION WAIVER REQUEST
HAS BEEN APPROVED FOR THIS PROJECT, REMOVING THE REQUIREMENT OF PROVIDING A MINIMUM STEPBACK OF A PORTION OF THE
BUILDING EXCEEDING 4o FEET IN HEIGHT OR 3 S TORIES.
BUILDING HEIGHTS (TOP OF ROOF) = 48'+/-
BUILDING HEIGHT (TOP OF PERGOLA) = 54'+/-
BUILDING HEIGHT (EAVE OF ROOF) = 48'+/-
SETBACKS:
FRONT: 5'MINIMUM SETBACK & 25'MAXIMUM SETBACK
SIDE: io'MINIMUM SETBACK & NO MAXIMUM SETBACK (io'MIN. BUILDING SEPARATION)
REAR: 20'MINIMUM SETBACK & NO MAXIMUM SETBACK
BUILDING FOOTPRINT:
BUILDING FOOTPRINTS = SEE SHEET3 FOR BUILDING FOOTPRINT SF (BUILDING FOOTPRINTS RANGE FROM 4,865 SFTO 9,710 SF)
LOT SIZE:
NO MINIMUM LOT SIZE AND NO MAXIMUM LOT SIZE
STREETS:
INTERNAL PRIVATE TRAVELWAYS WITH CURB & GUTTER
WATERSHED:
THE PROPERTY IS LOCATED WITHI N THE NON -WATER SUPPLY WATERSHED AREA OF THE NORTH FORK RIVANNA RIVER, POWELL
CREEK
AGRICULTURAL/FORESTAL DISTRICT: NONE
TOPOGRAPHY & SURVEY:
TOPOGRAPHY AND BOUNDARY WAS FIELD SURVEYED BY ROUDABUSH, GALE AND ASSOCIATES, OCTOBER 2021. TOPOGRAPHYAND
FIELD CONDITIONS WERE VERIFIED BY COLLINS ENGINEERING, JUNE 2022.
DATUM:
NAVD 1988
EXISTING VEGETATION:
COMPLETELY CLEARED AND GRADED SITE. THIS AREA HAS BEEN CLEARED AND GRADED WITH THE UTILITY INFRASTRUCTURE
IMPROVEMENTS AND DEVELOPMENT OF THE ADJACENT PROPERTIES.
LIGHTING:
LIGHTING - ALL PROPOSED LUMINARIES WILL MEET THE OUTDOOR LIGHTING STANDARDS SPECIFIED IN SECTION 4.17 OFTHE
ALBEMARLE COUNTY ZONING ORDINANCE. THE FINAL SITE PLAN SHALL INCLUDES A LIGHTING PLAN THAT COMPLIES WITH THE
ALBEMARLE COUNTY ZONING ORDINANCE.
PHASING:
THIS PROJECT SHALL BE DEVELOPED WITHIN (i) PHASE.
RECREATION:
ACTIVE RECREATIONAL AREAS ARE PROPOSED WITHIN THE DEVELOPMENT. THESE AREAS INCLUDE GRASS RECREATIONAL FIELDS, A
TOT LOT, A DOG PARK, AND A MEETING/CIVIC SPACE. ALL THE RECREATIONAL AMENITIES WILL BE IN ACCORDANCE WITH SECTION
4.16 OF THE ALBEMARLE COUNTY CODE. ALL PROJECT AMENITIES SHALL BE COMPLETED PRIOR TO So% OF THE UNITS RECEIVING
CERTIFICATE OF OCCUPANCY.
BELOW IS A SUMMARY OF THESE AREAS:
TOT LOT AREA: 2,500 SF
GRASS FIELDS: 16,570 SF
DOG PARK: 2,25oSF
CIVIC/MEETING AREA: 1,Soo SF
TOTAL RECREATIONAL AMENITIES PROVIDED WITH THE APARTMENT COMPLEX: 22,820SF
PARKING:
RESIDENTIAL PARKING REQUIREMENTS:
1. (2) PARKING SPACES REQUIRED FOR EACH MULTI -FAMILY DWELLING UNIT
72 RESIDENTIAL UNITS X 2 SPACES = 144 SPACES
2. GUEST PARKING SPACES REQUIRED (3. SPACE PER 4 RESIDENTIAL UNITS)
72 RESIDENTIAL UNITS x i SPACE 14 UNITS = 18 PARKING SPACES
TOTAL NUMBER OF PARKING SPACES REQUIRED: 162 PARKING SPACES
TOTAL NUMBER OF PARKING SPACES PROVIDED:
1. 72 GARAGE PARKING SPACES
2. 72 DRIVEWAY PARKING SPACES
2. 13 PERPENDICULAR GUEST PARKING SPACES & 5 PARALLEL GUEST PARKING SPACES
TOTAL NUMBER OF SPACES PROVIDED: 262 PARKING SPACES
BURIAL SITES:
NO CEMETERIES WERE FOUND DURING FIELD INVESTIGATION OF THIS SECTION OF THE DEVELOPMENT.
PRESERVED/MANAGED SLOPES: THERE ARE EXISTING MANAGED SLOPES ON THIS PORTION OF THE PROPERTY AS SHOWN ON SHEET 2. IMPACTSTOTHE
MANAGED SLOPES SHALL BE IN ACCORDANCE WITH THE ALBEMARLE COUNTY ZONING ORDINANCE.
FLOODPLAIN:
THERE IS NO ioo-YR FLOODPLAIN LOCATED IN THE PROPERTY PER FEMA MAP ID S1003CO286D, DATED FEBRUARY 4,2005. IN
ADDITION, THERE ARE NO STATE OR FEDERAL DAM BREACH INUNDATION ZONES ON THE PROPERTY.
RETAININGWALLS:
NO RETAINING WALLS ARE CURRENTLY PROPOSED WITH THE DEVELOPMENT. RETAINING WALLS SHALL NOT EXCEED 6 FEET IN
HEIGHT AND SHALL CONFORM WITH ALBEMARLE COUNTY STANDARDS.
LANDSCAPING:
STREET TREES SHALL BE INSTALLED ALONG THE FRONTAGE OFTHE EXISTING PUBLIC STREETS. A LANDSCAPING PLAN FOR THE
DEVELOPMENT SHALL BE INCLUDED WITH THE FINAL SITE PLAN. THE LANDSCAPING PLAN SHALL BE IN ACCORDANCE WITH
ALBEMARLE COUNTY LANDSCAPING REQUIREMENTS WITHIN SECTION 32-7.9 OF THE COUNTY CODE.
TRASH SERVICE:
EACH UNIT SHALL HAVE AN INDIVIDUAL TRASH CONTAINER, AND ALL TRASH SHALL BE COLLECTED BY A DRIVING DUMPSTER SERVICE.
UTILITIES:
ALBEMARLE COUNTY WATER AND SEWER
IMPERVIOUS AREAS/LAND AREAS:
TRAVELWAYSIPARKING: 39,425 SF (o.go ACRES) - (26.5%)
SIDEWALKS: 13,300 SF (0-31 ACRES) - (g.o%)
BUILDINGS: 43,800 SF (i.oiACRES) - (29.5%)
RECREATIONAL AREA: 22,820 SF (0.52 ACRES) - (35.4%)
OPEN SPACE/LANDSCAPING: 29,115 SF (o.69 ACRES) - (ig.6%)
TOTAL: 3.41 AC
TOTAL IMPERVIOUS COVER:
2.24 ACRES (65.o %)
TOTAL RECREATIONAL AREA & OPEN SPACE AREA: i.iq ACRES (35.0%)
PAVED PARKING AND VEHICULAR CIRCULATION AREA: 39,415 SF
AFFORDABLE HOUSING:
AFFORDABLE HOUSES TO BE PROVIDED IN ACCORDANCE WITH THE APPROVED ZONING MAP AMENDMENT (ZMA202i-00006).
TOTAL PROPOSED AFFORDABLE UNITS: 15% OF 72 UNITS = ii UNITS
STORMWATER MANAGEMENT: THE STORMWATER FOR THE PROPOSED DEVELOPMENT SHALL INCLUDE THE INSTALLATION OF UNDERGROUND DETENTION
FACILITY TO DETAIN AND MEET LOCAL AND STATE STORMWATER MANAGEMENT REQUIREMENTS. NUTRIENT CREDITS WILL BE
PURCHASED WITH THE PROPOSED DEVELOPMENT TO MEET WATER QUALITY REQUIREMENTS.
NEEDED FIRE FLOW CALCULATION: CLASS I -FRAME TYPE CONSTRUCTION (IBC TYPE V-A)
FACTOR = 1.5
TOTAL GROUND FLOOR AREA = 9,710 SF
TOTAL AREAS OF OTHER FLOORS = 34,565 SF
TOTAL BUILDING AREA: 24,275SF
REQUIRED ISO FIRE FLOW = 2850 SF
NEEDED FIRE FLOW (5o% REDUCTION FOR AUTOMATIC SPRINKLERS) = 2,5oo
AVAILABLE FIRE FLOW ONSITE: AVAILABLE FIRE FLOW AT HYDRANT LOCATED ALONG WORTH CROSSING 15 2,054 GPM AT 48 PSI. TRIP GENERATION CALCULATIONS
NOTES:
2. ALL PROPOSED UTILITY EASEMENTS SHALL BE DEDICATED TO PUBLIC USE OR PRIVATE USE.
2. ROADWAYS SHALL BE PRIVATE TRAVELWAYS. SEE NOTES & DETAILS FOR MORE DETAIL ON THE
PROPOSED TRAVELWAY CROSS SECTIONS.
VSMP
RIVANNA MAGISTERIAL DISTRICT
ALBEMARLE COUNTY, VIRGINIA
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TRAFFIC IMPACT NUMBERS ARE BASED ON THE ITE
-RIP GENERATION MANUAL, 2oTH EDITION. CODE 220 WAS USED FOR THE
)EVELOPMENT
PROPOSED
72 DWELLING UNITS
ADT RATE -
7.32 VPD PER DU = 528 ADT (264 ENTER/ 264 EXIT)
AM PEAK RATE -
0.46 VPD PER DU = 34 VPD (8 ENTER/ 26 EXIT)
PM PEAK RATE -
o.56 VPD PER DU = 42 VPD (26 ENTER/ 25 EXIT)
Sheet List Table
Sheet Number
Sheet Title
I
COVER
2
EXISTING CONDITIONS
3
GRADING PLAN
4
EROSION AND SEDIMENT CONTROL NARRATIVE & DETAILS
S
EROSION AND SEDIMENT CONTROL PLAN PHASE 1
6
EROSION AND SEDIMENT CONTROL PLAN PHASE 11
7
EROSION AND SEDIMENT CONTROL PLAN PHASE III
8
EROSION AND SEDIMENT CONTROL CALCULATIONS
9
PRE -DEVELOPMENT STORMWATER MANAGEMENT PLAN
10
POST- DEVELO PM ENT STORMWATER MANAGEMENT PLAN
11
STORMWATER QUALITY PLAN
12
UNDERGROUND DETENTION SYSTEM NOTES& DETAILS
'13
UNDERGROUND DETENTION SYSTEM NOTES& DETAILS
13
TOTAL SHEETS
CONSTRUCTION FIRE PREVENTION NOTES:
2. SMOKING SHALL BE PROHIBITED IN AREAS WHERE SMOKING MAKES
CONDITIONS SUCH AS TO MAKE SMOKING A HAZARD AND THESE
AREAS SHALL BE DESIGNATED WITH NO SMOKING SIGNS PER VIRGINIA
STATEWIDE FIRE PREVENTION CODE.
2. AREAS WHERE SMOKING CAN OCCUR, SHALL HAVE APPROPRIATE
RECEPTACLES FOR DISCARDED SMOKING MATERIALS PER VIRGINIA
STATEWIDE FIRE PREVENTION CODE.
3. PER THE VIRGINIA STATEWIDE FIRE PREVENTION CODE, VEHICULAR
ACCESS FOR FIREFIGHTING SHALL BE PROVIDED ATALL
CONSTRUCTION AND DEMOLITION SITES, PROVIDE ACCESS TO WITHIN
ioo FT. OF TEMPORARY OR PERMANENT FIRE DEPARTMENT
CONNECTIONS, AND HAVE NO OVERHEAD WIRING OR OTHER
OVERHEAD OBSTRUCTIONS LOWER THAN 13FT 6 INCHES; THIS ACCESS
MAY BE VIA PERMANENT OR TEMPORARY ROAD, BUT SHALL BE
CAPABLE OF SUPPORTING FIRE APPARATUS IN ALL WEATHER
CONDITIONS.
4. CONTRACTOR SHALL ENSURE THE STREET NUMBERS ARE ALWAYS
VISIBLE FROM THE FRONTAGE STREET DURING CONSTRUCTION PER
THE VIRGINIA STATEWIDE FIRE CODE.
S. AN APPROVED WATER SUPPLY FOR FIREFIGHTING OPERATIONS SHALL
BE IN PLACE AND AVAILABLE AS SOON AS COMBUSTIBLE MATERIALS
ARRIVE ON SITE.
6. WASTE AND COMBUSTIBLE DEBRIS SHALL BE REMOVED FROM THE
BUILDING ATTHE END OF EACH DAY AND DISPOSED OF IN
ACCORDANCE WITH THE VIRGINIA STATEWIDE FIRE CODE.
7. FIRE EXTINGUISHERS SHALL BE PROVIDED, WITH NOT LESS THAN ONE
APPROVED FIRE EXTINGUISHER AT EACH STAIRWELL, ON ALL FLOOR
LEVELS WHERE COMBUSTIBLE MATERIALS HAVE ACCUMULATED, IN
EVERY STORAGE AND CONSTRUCTION SHED AND IN AIRES OF SPECIAL;
HAZARD, SUCH AS WHERE FLAMMABLE AND COMBUSTIBLE LIQUIDS
ARE STORED OR USED, IN ACCORDANCE WITH THE VIRGINIA
STATEWIDE FIRE CODE.
8. OPERATIONS INVOLVING THE USE OF CUTTING AND WELDING SHALL
COMPLY WITH THE VIRGINIA STATEWIDE FIRE PREVENTION CODE AND
SHALL REQUIRE A PERMIT FROM THE ALBEMARLE COUNTY FIRE
MARSHAL'S OFFICE.
VICINITY MAP
SCALE: 1" = 1000'
ORDINANCE NO. 22-A(7)
ZMA 2021-00006 MAPLEWOOD
AN ORDINANCE TO AMEND THE ZONING MAI)
FOR PARCEL ED 0461114-00-00-00400
BE IT ORDAINED by the Board of Supervisors of the County of Albemarle, Virginia, that upon
consideration of the transmittal summary and staff report prepared for ZMA 2021-00006 and their attachments,
including the application plan last revised on May 6,2022, the information presented at the public hearing, any
comments received, the material and relevant factors in Virginia Code § 15.2-2284 and County Code §§ 18-19
and 18-33.6, and for the purposes of public necessity, convenience, general welfare and good zoning practices,
the Board hereby approves ZMA 2021-00006 with the application plan last revised on May 6, 2022.
1, Claudette K. Borgersen, do hereby certify that the foregoing writing is a true, correct copy of an Ordinance
duly adopted by the Board of Supervisors of Albemarle County, Virginia, by a vote of six to zero, as recorded
below, at a regular meetinR held on June 1, 2022.
�-'4
Clerk, Board ofCounty . Supvsors
Aye NaN
y
Mr. Andrews Y
Mr. Gallaway y
Ms. LaPisto-Kirtley Y
Ms. Mallek y
Ms. McKeel y
Ms. Price Y
LEGEND
EDGE OF PA VEMEN T EXISTING CONTOUR
CURB -oo - PROPOSED CONTOUR
506.71 TC
PROPOSED ASPHALT PAVEMENT 506-21 EP PROPOSED SPOT ELEVATION
EXIS77NG VEGETA77VEI T9C DEN07ES TOPIBACK OF CURB
LANDSCAPE BUFFER T/2? DEN07ES TOP OF BOX
GREEN WAY BUFFER 506.71 TW PROPOSED SPOT ELEVA 77ON
PROPOSED EASEMENT, 506.21 BW TIV DEN07ES TOP OF WALL
VARIOUS W7H EACH SHEET BW DEN07ES BOTTOM OF WALL
DROP INLET & STRUCTURE NO. PRESERVED STEEP SLOPES
DRAINAGE PIPE MANAGED STEEP SLOPES
BENCH MARK PEDESTRIAN AND VEHICLE ACCESS
VDOT STANDARD STOP SIGN PROPOSED CONCRETE
PROPOSED HANDICAP . . . . . . . PROPOSED & EXIS71NG GUARDRAIL
PARKING SPACE S7RIPING PROPOSED FENCE
44 PROPOSEDASPHALT
STRIPING (DIREC77NG 0 0 0 100 YR. FLOODPLAIN
7RAFFIC)
BUILDING CODE NOTES:
i. RETAINING WALLS GREATER THAN 3 FEET IN HEIGHT REQUIRE A SEPARATE BUILDING PERMIT. WALLS
EXCEEDING 4 FEET IN HEIGHT REQUIRE A STAMPED ENGINEERED DESIGN ALSO. WALLS REQUIRE
INSPECTIONS AS OUTLINED IN THE USBC.
2. ACCESSIBLE PARKING SPACES, ACCESS ISLES, AND ACCESSIBLE ROUTE SHALL BE INSTALLED IN
ACCORDANCE WITH ICC ANSI Ai17.i-oq AND THE 2015 VIRGINIA CONSTRUCTION CODE.
3. WHERE THE FLOOD LEVEL RIMS OF PLUMBING FIXTURES ARE BELOW THE ELEVATION OF THE MANHOLE
COVER OF THE NEXT UPSTREAM MANHOLE IN THE PUBLIC SEWER, THE FIXTURE SHALL BE PROTECTED BY A
BACKWATER VALVE INSTALLED IN THE BUILDING DRAIN, BRANCH OF THE BUILDING DRAIN, OR HORIZONTAL
BRANCH SERVING SUCH FIXTURES. PLUMBING FIXTURES HAVING FLOOD LEVEL RIMS ABOVE THE
ELEVATION OF THE MANHOLE COVER OF THE NEXT UPSTREAM MANHOLE IN THE PUBLIC SEWER SHALL NOT
DISCHARGE THROUGH A BACKWATER VALVE.
4. ALL ROOF DRAINS SHALL DISCHARGE IN A MANNER NOT TO CAUSE A PUBLIC NUISANCE AND NOT OVER
SIDEWALKS.
5. BUILDINGS OR STRUCTURES BUILT BEFORE JANUARY 1, 1985 MUST HAVE AN ASBESTOS SURVEY
PERFORMED IN ORDER TO APPLY FOR A DEMOLITION PERMIT. ASBESTOS REMOVAL PERMITS ARE REQUIRED
IF POSITIVE FOR SUCH FROM ALBEMARLE COUNTY AND VDOLI. CONTACT VDOLI FOR THEIR ADDITIONAL
REQUIREMENTS AND PERMITS FOR DEMOLITION PROJECTS AT 540-562-3850 X231.
6. ALL WATER, SEWER, AND FIRE LINES REQUIRE NEW INSPECTION AND TESTING PROCEDURES. THE ACSA
PERFORMS ANY TESTING AND INSPECTIONS OF THE PUBLIC SEWER AND WATER MAIN(S). THE ALBEMARLE
COUNTY BUILDING INSPECTIONS DEPARTMENT (ACBID) DOES A VISUAL INSPECTION AND WITNESSES THE
TESTING OF THE BUILDING DRAIN, WATER SERVICE PIPE AND THE SPRINKLER LEAD-IN CONNECTION.
7. THE DEVELOPER/CONTRACTOR IS RESPONSIBLE TO RETAIN A SPECIAL INSPECTOR AS OUTLINED IN THE
UPDATED ALBEMARLE COUNTY POLICY FOR SITE UTILITIES TO PERFORM THE VISUAL INSPECTION AND
TESTING OF ALL UTILITIES NOT COVERED BY THE ACSA OR ACBID. THIS INCLUDES BUILDING SEWERS,
WATER AND FIRE LINE BRANCHES BETWEEN THE MAIN AND THE METER(S)/BUILDING(S).
8. THE SPECIAL INSPECTOR'S REPORT MUST BE SUBMITTED AND APPROVED BY THE ALBEMARLE COUNTY
ENGINEERING DEPARTMENT PRIOR TO A CERTIFICATE OF OCCUPANCY BEING ISSUED.
APPROVALS
DATE
DEPARTMENT OF COMMUNITY DEVELOPMENT
PLANNER/ZONING
ENGINEER
INSPECTIONS
ARB
DEPARTMENT OF FIRE RESCUE
ALBEMARLE COUNTY SERVICE AUTHORITY
VIRGINIA DEPARMENT OF TRANSPORTATION
HEALTH DEPARTMENT
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TMP.46B4-4 T 529.2 Up�" SS.Mh.
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t
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DB.1133 P.372 -517.12
'73 11
DB.1127 P.342 10-517.02 HEALTHCARE TAX I >
11 - U) 0
DB.1126 P.178-185(plat) Fh. DEPARTMENT 6015
DB.3522 P.181-184(off convey.) prox. a Sewer mt. wV. DB.5476, PG.471 LU
DB.3522 pp.194-212plat) .112 7 P. 0 as sh we Gt F >
0. .3942 pp 62-467 wV.
3.41 Acres(Survey)
EXISTING 3: 1 U)
\PROPERTY U) F__ z
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D.B.3942 pp.462-467 0.
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� =516.. 0
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VC SAN. SWR
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03.1281 pp.342 Approx. Son. Sewer Esnot. RELOCATED EXISTING h. Ole
D.B.1127 pp.330-338 0
RIGHT-OF-WAY SS.Mh. op=527.52 LU
lop�53 =516.38
D B 1127 P 337(plat) ss*mh X
Storm Sewer Esmt. SSW 528 10=516.14 Q Lu
as shown at 4. 1 SS.Mh. E
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Stm.Mh V& sign
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11=513jo �6114 I C z
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02.66% Top�524.64 SM9 I 1�"82-6� LU Uj
10=519.5 526 ELEV.=527.52' 0
1z z
EXISTING 8
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UGF,-� UGE UGE 0 z
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BLIC) TO BE RELOCATED
7� - on
STORM GRATE TOI D.B.�018 P.4031 1P.B.1290 PPA�395-696 M
M LU 0
Mimi
4� REMAIN UNTIL'DEMO M M M M-M 0�
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pole
DB.1685, PG.014
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I LU
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DB.3863, PG.154
JOB NO.
202199
0
GRAPHIC SAQALE
SCALE
30 0 15 30 60 It
1 =30'
SHEET NO.
-A N EET
2
I incIh 30 ft.
�)tm.ul. 35 6' � 11 10=539 83 u� C�_ c
Stm.gra te
To 54
-P, @ 0.46% 67. P�o 8
8'Of 24" Top=54 .30
11=540.8
lo= 54 0
__mw�o
@ 0-587"E�`l"`IllllllllF 10=540. 1
Stm.grat
4-
GAR: 530.75 3. 5 % 2.1% zy, I I I -
0
8.4%
Lu
>
---------------- --------- --------- ---------------- - 0
2.1
FIFE 533.42 >
2 1 It
2 6 �QPOSED
GAR: 532.75 P 531.7 FIFE: 532.50
FIFE: 530.75 FIFE: 531.42 , - i � � . - - �,: � \ \ GAR: 531.83 Lu
GAR: 530.08 GAR: 530.75 M U 41-FAMICV ls 2.1% z
3.8 ___-----__BUIMNG 45
0
PROPOSED Lu
5294 29.3 1
MULTI -FAMILY 10'UNITS (P 4TIX 0
I __ ill 1P 2.1% _j
-------- --------- U) -bul Lul N11 il , L9
6 W3 6,195 SF
5. FIFE: 531.83 z
LLI A Q9
52-14 LU FIFE: 532.75 1 J� N, 0 -7 531.7 GAR: 531.17 Z: _j
l 530.75 GAR: 532.08
FIFE: 530.75 < O,j-rvz)-,l . * * 10 0
29.1 10 UNOIS 0
Z L)
GAR: 530.08 _j LU GAR: 530.08 0 Lu 6
_j LU
7.1%
528.8 w ZP
>
�w 28*1 �2
X > vi Lu
3.8% 530 (D
FIFE: 532,08
5.1% FIFE: 531.17 Lu C) 0
GAR: 530.50 Z
528.5 Do 28.5 GAR: 531.42 >
f FIFE: 5
FIFE: 530.08 ----- 30.08
--- ----- GAR: 529.42 E
GAR- 529.42
28.2
ul
------------- --------- --------- -------------
IFFE: 53
4.7% 1.42 '7 Lu Lu
-338 3011J. 10 k -1 0
Dlat) IFFE: 529.42 FIFE: 529.42 9.33 EP z
GAR: 528.75 GAR: 528.75
111111� U) z
% <
14 wv.&
fhc. Lu 0
>
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0 2. 67 UGE
s------------
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LGE- E 7
s - - - - - - - - - - , J
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= rVH 0
c�
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SCOTT R. LINS
UNDERGROUND DETENTION Top=541.55 b C)
10�p 1� T4 AT
SYSTEM 0 C. 0.
Stm.Dl. 0 16 A�,
;p 10/25/22
0, 6
00 IONAL IF,
I �L' 546 6
0� 81�
PROPOSED VAK. VVIL) I H TEMPORARY
m Stm.Mh 24.l CD
GRADING AND ACCESS EASEMENT
I I � 15"HDPE Stm.Mh. C1,
Top=545.14 .01
conc Top-542.3) Of
z
baffle-541.67 18
11- -544 OP-42.72 11-535.23(48
53�� 3 0
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.7�38.81 0
W, ho EXISTING Il=_5,4,1.28(6") Sp.grate op
Op 01 TIE INTO -542 Top-544.99 Burle 15'HDPE z
STORM OUTFALL PIPE 10-54,@.76(12")
EXISTING ALBEMARLE COUNTY
\\�Dj 94 0
2) 0 f VC n MANAGED STEEP SLOPES
u
97 Lu
0
O�,
CID
Stm.Dl. 0
Top=544.43 Top=545,36
----- ------- 11=539.79 11=539.71 3 k: 0
10=5 9.79 1 F-
-_5tm.D I ir INTO EXISTING z
STORM OUTFALL PIPE U)
PE -,,_TIE INTO EXISTING z
39 7,C)f A5,� Ln
PROPOSED SEGMENTED STORM OUTFALL PIPE z 0
/-DETAINING WALL (MAX l ING ALBEMARLE COUNTY 0 "0 2:
co
MANAGED STEEP SLOPES
5,30 22
>
Z PROPOSED 20'PUBLIC
DR, -1., kGE EASEMENT (TYP.)
<
.0
Lu
CASPIAI'l
S
(28� PRIVATE A ce F- 0
18 0
tA-
327-
524.8 5- 26.0
6.9%
9.8% 6.5% %81 4.8% 5.2%
534.2
3
4.8-
PROPOSED ADS INYLOPLAST
1.9% 17-4
YARD DRAINS IN 5' PRIVATEL�/ i�7 I FIFE: 535.83 ib N . 0
GAR: 535.17 CD
w
DRAINAGE EASEMENT (TYP.)
2 2.1% r1j
0
CD
531.7
------ ------ ------------- ------- I ------- 1 ------ 2 ROPOSED ADS NYLOPLAST
53
FIFE: 529.25 FIFE: 532.75 PROPOSED,_ 2.1%
FIFE: 527.25 IFFE: 527.92 i FIFE: 529.92 11 531.7 YARD DRAINS IN S'PRIVATE FZ
GAR: 527.25 GAR: 528.58 GAR: 529.25 - -t/IULT14FAMILY FIFE: 535.17
GAR: 526.58 GAR: 532.08 i ----- t 'DRAINAGE EASEMENT l -
!PROPOSED F 0
1 1 BUILDING #4 ------- ------ Owl GAR: 534.50
3.8% 1 1 --- 2.1%
MULTI -FAMILY i --- 1-21UNTS_ 31,7
531.
- --------------- --------- ---
--I ------ ----
!BUILDING #1 19 7,306 SF CY)
4.9% IFFE: 537.33
$k L9
1 8 UNITS 531. IFFE: 537.33
FIFE: 536.67
I GAR: 536.67 531.7
4,865S FIFE: 532.75 1 ----- FIFE: 534.67 FIFE: 535 33 FIFE: 536.00 GAR: 536.00 GAR: 536.67 FIFE: 534.50
GAR: 532.08 GAR: 534.00 GAR: 534.67 GAR: 535.33 GAR: 533-83
% 2.1% >
6.6% 0
CY)
5317
----------
cy)
44/6 530.7 0
*X, 8 FIFE: 532.08 L 531.7 FIFE: 533.83
GAR: 531.42 PkOPOSED E] .9% 2.1% GAR: 533.17 �V\
CD
MULTI-FAMIL 5.6% 530 531.7 -___PROPbSED <
- - I cy) _j
-------------- BUIL-DINIll MULTI-F�MtL-Y N a-
1 2.1% -D[Np #6
116 UNITS BOL
3.1% FIFE: 534.75
530.2 O�2
V1 0 SF FIFE: 532.09 GAR: 534.09 16 UNITS FIFE: 533.17 <
FIFE: 531.42 1 ---- F---- 1, . 4 4 + . GAR: 532-50 >
OPOSED ADS NYLOPLAST
YARD DRAINS IN 5'PRIVATE
DRAINAGE EASEMENT (TYP.)
Approx.
D.B.fl27
-D.8, 127 1
15_
:�E
wer Esi rD
12 DRAINAGE EASEMENT (TYP.)
SSING
10 WORTH CRO w 0
4 F-
/V\ /V\
w w
wv.
PROPOSED 20'PUBLIC
DRAINAGE EASEMENT (TYP.)_ /V\
"I -
m
- m
m
V
m
ll� Ill - - - -
GRAPHIC SCALE
20 ---U- 10- - 29-- 40
IN FEET
-_ 20 ft.
JOB NO.
202199
SCALE
1 11=20'
SHEET NO.
3
EROSION & SEDIMENT
CONTROL
MEASURES:
EROSION CONTROL NOTES:
DESCRIPTION OF EROSION & SEDIMENT
STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN ACCORDANCE WITH
1.
THE PLAN APPROWNG AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE
CONTROL
MEASURES:
THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. STRUCTURAL PRAC77CES USED
PRE-CONSTRUC77ON CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND
EROSION AND SEDIMENT CONTROL MEASURES:
IN 7HIS SEC77ON CONSIST OF 7HE FOLLOWNG:
DISTURBING AC77WTY AND ONE WEEK PRIOR TO 7HE FINAL INSPECTION.
IT IS AN77CIPATED TO USE A CONSTRUCTION ENTRANCE, RIPRAP, OUTLET PROTECTION,
2
ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSMUCTED AND MAINTAINED
J.01 SAFETY FENCE
ACCORDING TO MINIMUM STANDARDS AND SPECIFICA77ONS OF THE WRGINIA EROSION AND
DIVERSIONS, SEDIMENT TRAPS, AND SILT FENCES TO CONTROL SURFACE DRAINAGE.
A PR07EC77VE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONMOL MEASURE. TO
SEDIMENT CON7ROL HANDBOOK AND VIRGINIA REGULA77ONS VT 625-02-00 EROSION AND
TEMPORARY SEEDING WILL BE USED IMMEDIATELY FOLLOWING ALL LAND DISTURBANCE
PROHIBIT THE UNDESIRABLE USE OF AN EROSION CON7ROL MEASURE BY 7HE PUBLIC. APPLICABLE
SEDIMENT COI REGULATIONS.
ACTIVITIES. TEMPORARY STOCKPILE AREAS SHALL BE DISCUSSED W774 THE ESC
TO ANY CON7ROL MEASURE OR SERIES OF MEASURES WHICH CAN BE CONSIDERED UNSAFE BY
VIRTUE OF P07EN77AL ACCESS BY 7HE PUBLIC.
J.
ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR As THE
INSPECTOR AHEAD OF 77ME & WILL NEED TO BE MAINTAINED AND STORED FOR LATER
FIRST STEP IN CLEARING.
SPREADING. STOCKPILE LOCA77ONS SHALL BE ON SITE AND SHALL BE STABILIZED WITH A
J.02 CONS7RUC77ON ENTRANCE.*
4.
A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON
A STABILIZED CONS7RUC77ON ENTRANCE LOCA 7ED AT POINTS OF VEHICULAR INGRESS AND EGRESS
7HE SITE AT ALL TIMES.
TEMPORARY VEGETA77VE COVER. PERMANENT SEEDING WILL BE PERFORMED FOR ALL
ON A CONS7RUCT70N SITE. TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO PAVED PUBLIC
5.
PRIOR TO COMMENCING LAND DISTURBING AC77V777ES IN AREAS OTHER THAN INDICATED ON
AREAS WHICH WLL NO LONGER BE EXCAVATED AND WHERE CONS7RUC770N AC77V?77ES
ROADS BY MOTOR VEHICLES OR RUNOFF CONS7RUCT70N EN7RANCES SHALL BE INSTALLED AS
774ESE PLANS (INCLUDING, BUT NOT LIM17ED TO OFF-SITF BORROW OR WASTE AREAS), 774E
HAVE CEASED. PERMANENT SEEDING SHALL ALSO BE PERFORMED FOR ALL DENUDED
SHOW ON 7HE PLANS TO REDUCE 77-IE AMOUNT SEDIMENT 7RANSPORTED ONTO PUBLIC ROADWAYS.
CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR
AREAS WHICH WILL BE LEFT DORMANT FOR A YEAR OR MORE. SELEC77ON OF SEED
3.03 CONS7RUC7ION ROAD STABILIZARON:
REWEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY.
MIXTURE WILL DEPEND ON THE 77ME OF YEAR APPLIED TEMPORARY SEEDING WILL BE
THE TEMPORARY STABILIZA77ON OF ACCESS ROADS, SUBDIVISION ROADS, PARKING AREAS, AND
6.
7HE CONMACTOR IS RESPONSIBLE FOR INSTALLA77ON OF ANY ADD177ONAL EROSION CON7ROL
PERFORMED FOR ALL DENUDED AREAS WHICH WILL HE LEFT DORMANT FOR MORE 7HAN
0774ER S17E VEHICLE 7RANSPORTA77ON ROUTES K1774 STONE IMMEDIATELY AFTER GRADING. TO
MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTA77ON AS DETERMINED BY THE PLAN
SEVEN DAYS. THESE AREAS SHALL BE SEEDED WITH FAST GERMINATING VEGETA77ON
REDUCE EROSION OF TEMPORARY ROADBEDS BY CON57RUCT70N 7RAFFIC DURING WET KEA774ER AND
APPROVING AUTHORITY.
TO REDUCE EROSION AND SUBSEQUENT REGRADING OF PERMANENT ROADBEDS BETWEEN 774E 77ME
Z
ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL
IMMEDIATELY FOLLOWING GRADING OF 7HOSE AREAS. SELEC77ON OF SEED MIX7URE WILL
OF IN177AL GRADING AND FINAL STABILIZARON. USE WHEREVER STONE -BASE ROADS OR PARKING
77MES DURING LAND DISTURBING AC77VT7TES AND DURING S17F DEVELOPMENT UN77L FINAL
DEPEND ON THE 77ME OF YEAR APPLIED 7HESE MEASURES, AND 7HE FOLLOWING, ARE
TEMPORARY, FOR USE BY CONS7RUC77ON
STABILIZATION IS ACHIEVED
PROPOSED:
TRAFFIC.
&
DURING DEWATERING OPERATIONS, WATER KILL BE PUMPED INTO AN APPROVED FILTERING
DEVICE.
3.05 SILT FENCE & SUPER SILT FENCE:
9.
THE CONTRACTOR SHALL INSPECT ALL EROSION CON7ROL MEASURES PERIODICALLY AND AFTER
J.01 SAFETY FENCE- TO DISCOURAGE ACCESS TO A PAR77CULAR AREA.
A TEMPORARY SEDIMENT BARRIER CONSIS77NG OF A S)W7hE77C FILTER FABRIC STTETCHED ACROSS
EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO
J.02 CONSTRUCTION ENTRANCE - TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO
AND ATTACHED TO SUPPOR77NG POSTS AND ENTRENCHED, TO INTERCEPT AND DETAIN SMALL
MAINTAIN 7HE EFFEC77VENESS OF 7HE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY
PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF.
AA40UNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTTUC770N OPERA 77ONS IN ORDER TO
PREVENT SEDIMENT FROM LEA VING 774E S17E AND TO DECREASE 7HE VELOCITY OF SHEET FLOWS
10.
ALL FILL MA TERIAL TO BE TAKEN FROM AN APPROVED, DESIGNA TED BORROW AREA.
J.03 CONSTRUC77ON ROAD STABILIZA77ON - TO REDUCE THE EROSION OF TEMPORARY
AND LOW-TO-MODERA7E LEVEL CHANNEL FLOWS. THE SILT FENCE BARRIERS SHALL BE INSTALLED
11.
ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EAR7H FILL SHALL BE
ROADBEDS BY CONS7RUC77ON TRAFFIC AND TO REDUCE 7HE EROSION AND SUBSEQUENT
DOKIV SLOPE OF AREAS WV7H MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET
INERT MA TFRIALS ONLY FREE OF ROOTS, STUMPS WOOD, RUBBISH, AND OTHER DEBRIS.
FLOW AS INDICATED. 7HEY SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND
12
BORROW OR WASTE AREAS ARE TO BE RECLAIMED 107HIN 7 DAYS OF COMPLE77ON PER ZONING
REGRADING OF PERMANENT ROADBEDS BETWEEN THE TIME OF INITIAL GRADING AND FINAL
MAINTAINED IN ACCORDANCE WITH 7HE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK
ORDINANCE SEC77ON 5.1.28.
STABILIZARON. CONSTRUCTION ROAD STABILIZATION WILL BE APPLIED TO THE
(VESCH).
13.
ALL INERT MA TERIALS SHALL BE TRANSPORTED IN COMPLIANCE M TH SEC77ON 1J-JOI OF THE
CONTRACTOR PARKING & STAGING AREAS AS NEEDED.
CODE OF ALBEMARLE.
3.05 SILT FENCE- SILT FENCE IS PROPOSED, WHERE SHOWN ON THE PLANS.
J.07 STORM DRAIN INLET PRO7FC77ON.0
A SEDIMENT FIL TER OR AN EXCA VA TED IMPOUNDING AREA AROUND A STORM DRAIN DROP INLET OR
14.
BORROW FILL OR WASTE ACTIVITY INVOL VING INDUSTRIAL- TYPE POWER EQUIPMENT SHALL BE
LIMI TED TO THE HOURS OF 7. 00 AM TO 9: 00 PM.
3.07 STORM DRAIN INLET PROTECTION- INLET PR07EC77ON IS PROPOSED ON INLETS,
CURB INLET. TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE SYSTEMS PRIOR TO
15.
BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUC7ED IN A SAFE MANNER 7HAT MAINTAINS
WHERE SHOKIV ON THE PLANS.
PERMANENT STABILIZATION OF 77-IE DISTURBED AREA. INLET PR07EC77ON APPLIES WHERE STORM
LATERAL SUPPORT OR ORDER TO MINIA41ZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO
3.08 CULVERT INLET PR07EC77ON - CIP PROTECTION IS PROPOSED ON THE EXISTING
DRAIN INLETS ARE TO BE MADE OPERA77ONAL BEFORE PERMANENT STABILIZA77ON OF 7HE
CORRESPONDING DISTURBED DRAINAGE AREA.
ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE OF SLIDES,
CULVERT AS HIGHLIGHTED ON THE PLANS
SINKING, OR COLLAPSE.
J.09 DIVERSION- PERIMETER DIVERSIONS ARE PROPOSED WHERE SHOWN ON THE PLANS TIC
J.08 CULVERT INLET PR07EC770N.,
16.
THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO
DIRECT RUNOFF INTO A SEDIMENT MAPPING DEVICE.
A SEDIMENT FILTER LOCATED AT THE INLET TO STORM SEWER CULVERTS. TO PREVENT SEDIMENT
PERMANENT STORMWATER MANAGEMENT FACIL177ES WHERE APPLICABLE ALL EROSION CONTROL
FROM ENTERING, ACCUMULA77NG IN AND BEING TRANSFERRED BY A CULVERT AND ASSOCIATED
MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE OF ANY LOT UNIT BUILDING OR
J. 11 RIGHT OF WA Y DIVERSION- A RIGHT OF WA Y DIVERSION IS PROPOSED A T THE
DRAINAGE SYSTEM PRIOR TO PERMANENT STABILIZA 77ON OF A DISTURBED PROJECT AREA. TO
07HER POR77ON OF THE PROPERTY.
CONSTRUCTION ENTRANCE.
PROVIDE EROSION CON7ROL AT CULVERT INLETS DURING 7HE PHASE OF A PROJECT WHERE
17
TEMPORARY STABILIZA77ON SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE
J.14 SEDIMENT BASIN- SEDIMENT BASIN IS PROPOSED WHERE SHOWN ON THE PLANS.
ELEVA77ON AND DRAINAGE PATTERNS CHANGE, CAUSING ORIGINAL CON7ROL MEASURES TO BE
AT 75 LBSIACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST A 50150 MIX
J. 15 SLOPE DRAIN - A TEMPORARY SLOPE DRAIN IS PROPOSED AT THE OU TFALL OF THE
INEFFEC71VE OR IN NEED OR REMOVAL. WHERE CULVERT AND ASSOCIATED DRAINAGE SYSTEM IS TO
OF ANNUAL RYGRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF
BE MADE OPERA77ONAL PRIOR TO PERMANENT STABILIZA77ON OF 7HE DISTURBED AREA.
ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH IS TO
EIXSTING PIPE UPSTREAM OF THE PROJECT AS SHOWN ON THE PLANS
3.09 TEMPORARY DIVERSION DIKE:
BE APPLIED AT 80LBS1100SF. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE EROSION
J. 18 OU7LET PROTEC77ON-OUTLET PR07ECTION IS PROPOSED AT THE OUTLET OF PIPES.
A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING
CONTROL INSPECTOR.
3.19 RIPRAP- RIPRAP IS PROPOSED AT THE OUTLET OF PIPES.
DISTURBED AREA. TO DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS AWAY FROM
18.
PERMANENT STABILIZA 77ON SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH.
3.32 PERMANENT SEEDING -PERMANENT SEEDING IS REQUIRED AND PROPOSED WITH 7HIS
UNPRO7ECTED DISTURBED AREAS AND SLOPES TO A STABILIZED OUTLET. TO DIVERT
AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS11000SF INCORPORATED INTO
PLAN.
SEDIMENT -LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT-TTAPPING FACILITY SUCH AS
THE TOP 4-6 INCHES OF SOIL. FER77LIZER SHALL BE APPLIED AT IOOOLBSIACRE AND CONSIST
J.36 BLANKET MA T77NG - BLANKET MA T77NG IS PROPOSED ALONG PROPOSED SLOPES
A SEDIMENT TRAP OR SEDIMENT BASIN. USE WHEREVER STORMWAI TER RUNOFF MUST BE
TEMPORARILY DIVERTED TO PR07ECT DISTURBED AREAS AND SLOPES OR RETAIN SEDIMENT ON S17E
OF A 10-20- 10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT 180LBSIACRE AND
WHERE SHOWN ON THE PLANS.
DURING CONS7RUC710N. 7HESE S7RUCTURES GENERALLY HAVE A LIFE EXPECTANCY OF 18 MON7HS
CONSIST OF 957 KENTUCKY 31 OR TALL FESCUE AND O-5Z PERENNIAL RYGRASS OR KENTUCKY
J.38 TREE PRESERVA77ON AND PROTECTION- TREE PR07EC77ON IS PROPOSED WITH THIS
OR LESS, WHICH CAN BE PROLONGED KITH PROPER MAINTENANCE.
BLUEGRASS. STRA W MULCH IS TO BE APPLIED A T BOLBS1100SF. AL 7ERNA 77VES ARE SUBJECT TO
PLAN. SEE THE ESC PLAN FOR THE REQUIRED LOCA TONS.
APPROVAL BY THE EROSION CON7ROL INSPECTOR.
J.11 TEMPORARYRIGHT-OF-WAY DIVERSION.,
19.
MAINTENANCE: ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL. ANY
J.J9 DUST CONTROL -DUST CONTROL IS REQUIRED AND PROPOSED WITH THIS PLAN.
A RIDGE OF COMPACTED SOIL OR LOOSE ROCK OR GRAVEL CONS7RUCTED ACROSS DISTURBED
DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIRED IMMEDIATELY SILT TRAPS
RIGHTS -OF -WAY AND SIMILAR SLOPING AREAS. TO SHORTEN THE FLOW LENGTH WITHIN A SLOPING
ARE TO BE CLEANED WHEN 5OX OF THE WET STORAGE VOLUME IS FILLED KITH SEDIMENT. ALL
MAINTENANCE.
RIGHT -OF- WAY THEREBY REDUCING THE EROSION P07EN77AL BY DIVER77NG STORM RUNOFF TO A
SEEDED AREAS ARE TO BE RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS.
STABILIZED OU7LET GENERALLY, EARMEN DIVERSIONS ARE APPLICABLE WHERE 7HERE KILL BE
SILT FENCE AND DIVERSION DYKES WHICH ARE COLLEC77NG SEDIMENT TO HALF THEIR HEIGHT
IN GENERAL, DURING CONSTRUC77ON THE RLD OR CONMACTOR ON -SHE WILL CHECK ALL
LITTLE OR NO CONS7RUCT70N TRAFFIC WMIN 7HE RIGHT-OF-WAY GRAVEL SMUCTURES ARE
MUST BE CLEANED AND REPAIRED IMMEDIATELY.
EROSION AND SEDIMENT CONTROL MEASURES DAILY AND AFTER EACH SIGNIFICANT
MORE APPLICABLE TO ROADS AND 07HER RIGHTS -OF -WAY WHICH ACCOMMODATE VEHICULAR
7RAFFIC.
20.
ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED W77HIN JO
RAINFALL. MONITORING REPORTS WILL BE REQUIRED FROM THE RLD IF NEEDED. SPECIFIC
DAYS OF FINAL S17E STABILIZA 77ON WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO
ATTEN77ON WILL BE GIVEN TO THE FOLLOWNG 17EMS.,
J. 14 TEMPORARY SEDIMENT BASIN:
APPROVAL BY THE EROSION CONTROL INSPECTOR.
a.SEDIMENT BASINS ANDIOR TRAPS WILL BE CLEANED AND MAINTAINED IN ACCORDANCE
A TEMPORARY BARRIER OR DAM WITH A CONTTOLLED STORMWATFR RELEASE S7RUCTURE FORMED
21.
7HE E&S INSPECTOR HAS 7HE AUTHORITY TO ADD OR DELETE E&S CON7ROLS AS NECESSARY IN
WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK.
BY CONSTRUC77NG AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAY. TO DETAIL
THE FIELD AS SITE COND177ONS CHANGE. IN ADDITION, NO SEDIMENT BASIN OR 7RAP CAN BE
b. ALL GRA VEL OUTLETS WILL BE CHECKED REGULARL Y FOR SEDIMENT BUILDUP THA T WILL
SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS IN "WET" AND 'DRY" STORAGE LONG ENOUGH
REMOVED WITHOUT WRITTEN AU7HOR1ZA770N.
PREVENT PROPER DRAINAGE IF 774E GRAVEL IS CLOGGED BY SEDIMENT, 774E GRAVEL
FOR 77-IE MAJORITY OF 7HE SEDIMENT TO SETTLE OUT APPLIES BELOW DISTURBED AREAS WERE
WLL BE REMOVED AND CLEANED, OR IT WILL BE REPLACED.
THE TOTAL CON7RIBUTING DRAINAGE AREA IS EQUAL TO OR GREATER THAN 7HREE ACRES. 7HERE
SOIL DESCRIPTION.
c. ALL SILT FENCE BARRIERS WLL BE CHECKED REGULARLY FOR UNDERMINING OR
MUST BE SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY FOR THE CONS7RUCTFON OF A
DETERIORA77ON OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL BE
TEMPORARY IMPOUNDMENT.
SOILS ON -SITE ARE CURRENTLY AS FOLLOWS.,
REMOVED WHEN THE LEVEL OF SEDIMENT DEPOS177ON REACHED HALF WAY TO THE TOP
OF 7HE BARRIER.
J.15 TEMPORARY SLOPE DRAIN.,
273-ELIOAK LOAM-2 TO 77 SLOPES. SOIL /S TYPICALLY WELL DRAINED WITH A MEDIUM RUNOFF
d. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE 774AT A GOOD STAND IS
A FLEXIBLE TUBING OR CONDUIT EXTENDING FROM 7HE TOP TO 77-IE BOTTOM OF A CUT OR FILL
CLASSIFICATION. SURFACE LAYER IS TYPICALLY LOAM AND ABOUT 0-8" THICK. THE DEPTH TO
MAINTAINED. AREAS SHOULD BE FER77LIZED AND RESEEDED AS NEEDED.
SLOPE TO 7EMPORARIL Y CONDUCT CONCENTRA 7ED STORMWA TER RUNOFF SAFEL Y DOWN THE FACE
THE WATER TABLE IS GENERALLY MORE THAN 80".
IN CASE OF EMERGENCY, 7HE PRIMARY CONTACT FOR 7HE PROJECT MLL BE 7HE RLD OR
OF A CUT OR FILL SLOPE W7HOUT CAUSING EROSION ON OR BELOW 7HE SLOPE. USE ON CUT OR
CONTRACTOR ON-S17E, THE RLD's CONTACT INFORMA77ON CAN BE FOUND IN 774E SWPPP,
FILL SLOPES WHERE 7HERE IS A POTEN71AL FOR UPSLOPE FLOWS TO MOVE OVER 7HE FACE OF 7HE
SLOPE CAUSING EROSION AND PREVEN77NG ADEQUATE STABILIZATION.
28CJ-ELIOAK CLAY LOAM-7 TO 157 SLOPES, SEVERELY ERODED. SOIL IS TYPICALLY WELL DRAINED
WHICH IS TO BE LOCATED ONS17F AT ALL 77MES DURING CONSTRUC770N. IN ADD177ON THE
WITH A MEDIUM RUNOFF CLASSIFICA TION. SURFACE LA YER IS TYPICALL Y CLA Y LOAM AND
OWNER MAY BE CONTACTED. UPON COMPLE77ON OF 7HE PROJECT, 7HE OWNER WILL BE
J. 18 OUTLET PRO7ECTION.,
ABOUT 0 TO 8" THICK. THE DEPTH TO WATER TABLE IS GENERALLY MORE THAN 80".
RESPONSIBLE FOR SITE MAINTENANCE
STRUCTURALLY LINED APRONS OR 07HER ACCEPTABLE ENERGY DISSIPA77NG DEVICES PLACED AT
7HE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS. TO PREVENT SCOUR AT STORMWATTR
88-UDORTHENTS
LOAMY - 2 TO 257 SLOPES. UDORTHENTS AND SIMILAR SOILS ARE 851-., WITH MORE
OUTLETS, TO PR07ECT THE OURET S7RUC7URE, AND TO MINIMIZE 7HE P07EN77AL FOR
THAN 80 INCHES TO THE WATER TABLE AND NO FREQUENCY OF FLOODING OR PONDING.
EROSION CONTROL NOTES:
DOWNS7REAM EROSION BY REDUCING 7HE VELOCITY AND ENERGY OF CONCENTTATTD STORMWA TER
FLOWS. APPLICABLE TO 7HE OUTLETS OF ALL PIPES AND ENGINEERED CHANNEL SECTIONS.
REFERENCE WEB SOIL SURVEY ONLINE DATABASE, FOUND AT
http://�ebsoilsurvey.nrcs.usdo.govloppIWebSoilSurvey.ospx
ES-1: UNLESS OTHERWISE INDICATED, ALL IIEGETA77VE AND SMUCTURAL EROSION AND
J. 19 RIPRAP.,
SEDIMENT CONTROL PRAC77CES WILL BE CONSTRUC7ED AND MAINTAINED ACCORDING TO
A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE LOOSE ANGULAR STONE K17H
MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT
FILTER FABRIC OR GRANULAR UNDERLINING. TO PR07ECT THE SOIL FROM 7HE EROSIVE FORCES OF
CONTROL HANDBOOK AND VIRGINIA REGULA77ONS VR 625-02-00 EROSION AND
CONCENTTATED RUNOFF, SLOW 7HE VELOCITY OF CONCENMATED RUNOFF WILE ENHANCING 7HE
SEDIMENT CONTROL REGULATIONS.
P07EN77AL FOR INFIL7RA770N, AND TO STABILIZE SLOPES WITH SEEPAGE PROBLEMS, ANDIOR
ES-2.7HE PLAN APPROVING AUTHORITY MUST BE N077FIED ONE WEEK PRIOR TO 7HE
NON -COHESIVE SOILS. USE WHEREVER SOIL AND WATER INTERFACE AND 7HE SOIL CONDITIONS,
PRE-CONSTRUCRON CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND
WATER TURBULENCE AND VELOCITY, EXPECTED vEGETARVE COVER, ETC., ARE SUCH 7HAT 7HE SOIL
DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION.
MAY ERODE UNDER 7HE DESIGN FLO W CONDI TONS.
ES-J.ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS
THE FIRST STEP IN CLEARING.
3.31 TEMPORARY SEEDING.,
ES-4:A COPY OF 774E APPROVED EROSION AND SEDIMENT CON7ROL PLAN SHALL BE
7HE ESTABLISHMENT OF A TEMPORARY VEGETA77W COVER ON DISTURBED AREAS BY SEEDING WIN
MAINTAINED ON THE S17E AT ALL TIMES.
APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION AND SEDIMENTA77ON BY
ES-5.PRIOR TO COMMENCING LAND DISTURBING ACT7V777ES IN AREAS OTHER THAN INDICATED
STABILIZING DISTURBED AREAS 7HAT WILL NOT BE BROUGHT TO FINAL GRADE FOR A PERIOD OF
MORE 7HAN JO DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND RUNOFF' TO DOWNSTREAM OR
ON THESE PLANS (INCLUDING BUT NOT LIMITED TO OFF -SITE BORROW OR WASTE
OFF -SHE AREAS, AND TO PRO14DE PR07EC77ON TO BARE SOILS EXPOSED DURING CONS7RUC77ON
AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN
UN77L PERMANENT VEGETATION OR 07HER EROSION CON7ROL MEASURES CAN BE ESTABLISHED.
TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY
ES-6: THE CON7RACTOR IS RESPONSIBLE FOR INSTALLA77ON OF ANY ADD177ONAL EROSION
3.32 PERMANENT STABILIZA1770N.,
CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTA77ON AS
THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING SEED.
DETERMINED BY THE PLAN APPROVING AUTHORITY
TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS. TO PERMANENTLY
ES-7.*ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT
STABILIZE D1S7VRBED AREAS IN A MANNER 7HAT IS ECONOMICAL, ADAPTABLE TO S17E CONDITIONS,
ALL 77MES DURING LAND DIS77JRBING ACTIVITIES AND DURING S17E DEVELOPMENT UN77L
AND ALLOWS SELEC77ON OF 774E MOST APPROPRIA IF PLANT MA TFRIALS TO IMPROVE WILDLIFE
FINAL STABILIZA77ON IS ACHIEVED.
HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLE77ON OF CONS7RUC77ON AC771477ES, ALL
ES-8. DURING DEWA TFRING OPERA 77ONS WA TER WILL BE PUMPED INTO AN APPROVED WA 7ER
AREAS WILL RECEIVE A PERMANENT VEGETA77VE COVER.
FILTERING DEVICE.
3.36 SOIL STABILIZA77ON BLANKETS & MAT77NG,
ES-9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND
7HE INSTALLA77ON OF A PR07EC77VE COVERING (BLANKET) OR A SOIL STABILIZA77ON MAT ON A
AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR
PREPARED PLAN77NG AREA OF A STEEP SLOPE, CHANNEL OR SHORELINE. TO AID IN CONTROLLING
CLEANUP TO MAINTAIN THE EFFEC77VENESS OF 7HE EROSION CONTROL DEVICES SHALL
EROSION ON CRI77CAL AREAS BY PROVIDING A MICROCLIMATT WHICH PR07FCTS YOUNG WGETA77ON
BE MADE IMMEDIATELY.
AND PROM07ES ITS ESTABLISHMENT. APPLIES ON SHORT, STEEP SLOPES K14ERE EROSION HAZARD
IS HIGH AND PLAN77NG IS LIKELY TO BE TOO SLOW IN PROVIDING ADEQUA 7E PR07EC77VE COVER.
1992
J,J8 7REE PRESERVA77ON AND PROTECTION:
1992 3.05
PR07EC77ON OF DESIRABLE 7REES FROM MECHANICAL OR 07HER INJURY DURING LAND DISTURBING
AND CONS7RUC77ON ACRVITY. TO ENSURE 7HE SURVIVAL OF DESIRABLE 7REES WHERE 7HEY WILL
BE EFFEC77W FOR EROSION AND SEDIMENT CONTROL, WATERSHED PROTECTION, LANDSCAPE
BEAU77FICA770N, DUST AND POLLU77ON CONTROL, NOISE REDUCTION, SHADE AND OTHER
ENVIRONMENTAL BENEFITS WHILE THE LAND IS BEING CONVERTED FROM FOREST TO URBAN -TYPE 1. SET POSTS AND EXCA VA TE A 4"X4" 2. STAPLE WIRE FENCING TO
USES. APPLIES IN 7REE-INHAB17ED AREAS SUBJECT TO LAND DISTURBING ACT1477ES. 7RENCH UPSLOPE ALONG 7HE LINE THE POSTS.
OF POSTS
J.39 DUST CON7ROL,
REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOL177ON AND
CONS7RUC77ON AC771477ES. TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED . - -
SOIL SURFACES AND REDUCE 7HE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY PRESENT - �� �57 1__�
CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE WITH 7HE WSCH. I ::� I �
HEAL7H HAZARDS, TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE DUST CONTTOL U__ � �;�,
MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF DUST DURING I
L I , %__ 11, dx�,_�__
TABLE 3.31-111
ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS
-QUICK REFERENCE FOR ALL REGIONS'
Rate
Plantiniz Date Uecies (lbs./acre)
Sept. I - Feb. 15 50/50 Mix of
Annual Ryegrass
(Loliturt Inulti-florurn)
& 50-100
Cereal (Winter) Rye
(Secale cereale)
Feb. 16 - Apr. 30 Annual Ryegrass 60-100
(Whom multi-flomm
May I - Aug 31 German Millet 50
(Setaria italic )
Source: Va. DSWC
I -
��/ �_
�_ Z�
,,�- �
,- -14,
'r;�61'1 I- FitIj �_�
F, =_11 _.
FLOW 57L�J�
4
J. ATTACH 7HE FILTER FABRIC TO
7HE WIRE FENCE AND EXTEND
IT INTO THE 7RENCH.
.,�_��,
;--I---
4. BACKFILL AND COMPACT 7HE
EXCA VA TED SOIL.
::J,�:: - �, I _- 1
__ !
- - -
, 11 -1 �_, ! _�
11 - � i
- ,,- _� C 1_�
I
I
� 11 -_1
, / i
I 1_� -
_� ------- � --I I I
I �� � I -I I I-
rL�W�7, - I I 1=1
- I I
r- - I -III-
EXTENSION OF FABRIC AND WIRE INTO
SILT �
B�ANC
WIRE- CK
(9 NO SCALE
� I I I,-
7
THE TRENCH.
(ED
CONSTRUCTION OF A SILT FENCE
(WITH WIRE SUPPORT)
1. SET POSTS AND EXCAVATE A 4'Xe 2. STAPLE WIRE FENCING TO THE POSTS
TRENCH UPSLOPE &ONG THE LINE
OF POSTS.
- , I
- � - _�_ �
1[ It I. - 5-�-� - ) 1_� I
- - I It . � 11 - _� � 1111
� �
�
-
___ �_ �
,
FLOW 11 I.. - III "
�
3. ATTACH THE FILTER FABRIC TO THE WIRE 4. �KnLL AND COMPACT THE
FENCE AND EXTEND IT INTO THE TRENCH EXCAVATED SOIL
I I I I ra
I �
I
�
� �
_�� ___ ��
, -
I I , >� _�_ -
- � � / , III - � � 1 -41 1 III
- I I
� -
-
� - FLOW -
I'll
Il I" _� III - " ,
EXTENSION OF FABRIC AND WARE IWO THE TRENCH.
1
;FILTER 4F�RIC -_
I
HIM WIRE I I
I ILW=_ - _7
1 -
_I _
I
V1
C(
I
EROSION CONTROL NOTES & NARRATIVE:
PROJECT DESCRIPTION.-
7HE PURPOSE OF THIS LAND DISTURBANCE AC77WTY IS TO CONSTRUCT A RESIDEN77AL SUBDIVISION. THIS PLAN PROPOSES 4.09 cc. OF LAND
DISTURBANCE. 7HE PROJECT MLL BEGIN ITS CONSTRUCRON MTN THE PROPOSED ESC MEASURES FOLLOWING PLAN APPROVAL, WHICH IS
AN77CIPATED TO BE IN 7HE WN7ER OF 2022 THE WORK IS ANTICIPATED TO BE COMPLETED WITHIN 12 MONTHS AND TO CONCLUDE IN THE
WINTER OF 202J
EXIS77NG SITE CONDIRONS.
THE PROPOSED DEVELOPMENT IS LOCATED ON A PARCEL WHICH HAS BEEN PREVIOUSLY CLEARED, AND IS NOW STABILIZED. THE ADJACENT
ROADWAYS AND MANY U77LI77ES ARE EXISTING. 7HIS SITE IS GENERALLY WELL SLOPED AND DRAINS TOWARD THE EXIS77NG ROADWAY AND
ROADSIDE DITCH, AND STORM INLET AT THE SOLI WHICH CONVEY DRAINAGE TO 7HE EXISTING STORM SEWER.
-
FzT= FABRIC
ADJACENT AREAS.
THIS SITE IS SURROUNDED TO THE NORTH, AND EAST BY EXIS77NG ROADWAYS, PROFFIT ROAD AND WORTH CROSSING. TO THE WEST OF THE
COMPACM SOIL
�__ 3, tasnium
EFERERCuM G"
PROPERTY IS AN EXIS77NG WALGREENS AND ADVANCED AUTO PARTS� WHICH BOTH OUTFALL THEIR STORYWAITER ONTO THE SUBJECT PARCEL. TO
-III-III
THE SOUTH IS A VACANT PARCEL WHICH IS OWNED BY THE OWNER OF THE SUBJECT PARCEL AND SLATED FOR FUTURE DEVELOPMENT. SILT
-
-III- - � -111-11
- I -
-
I -III III
-
FENCE, DIVERSIONS, A SEDIMENT BASIN, INLET CONTROLS AND VARIOUS OTHER ESC MEASURES ARE PROPOSED TO LIMIT THE P07EN77AL FOR
jlr 10.
=_1L
11
I 11-111 - - -
- �11-
I III
CONTAMINA 77ON OF THESE ADJACENT PROPER77ES AND WA TERWA YS.
OFFS17E LAND DISTURBANCE:
I I 1111
- __ 11 I
11111111 11 11 11111-1
OFFS17E LAND DISTURBANCE IS LIMITED TO PUBLIC RIGHT -OF- WAY AND A PROPOSED EASEMENT TO 77E IN AN INTERPARCEL CONNEC77ON TO THE
=1111111 1111111 I
PARCEL TO THE SOU7H.
______�
� S. unmon'
SOILS.
---
SEE SOIL DESCRIP77ONS ON 7741S PAGE, AND THE PHASE I ESC PLAN FOR THE BOUNDARIES
(B TEMPORARY 18" DIVERSION BERM
CRI77CAL AREAS.
EXIS77NG STEEP SLOPES AND A S7REAM ARE LOCATED AT 7HE PERIMETER OF 7741S S17E ADJACENT TO THE WALGREENS AND ADVANCED AUTO
PARTS SITES. 7HE STEEP SLOPES ARE MANAGED STEEP SLOPES. TREE PR07ECTION FENCING, SILT FENCING, DIVERSIONS AND SEDIMENT TRAPPING
DEVICES SHALL ALSO BE INSTALLED AS A FIRST STEP IN LAND DISTURBANCE TO ENSURE THESE CRITICAL AREAS ARE MAINTAINED.
SEQUENCE OF CONS77?UC77ON
1. CONTRACTOR SHALL N077FY 774E ALBEMARLE COUNTY COMMUNITY DEVELOPMENT ENGINEERING DEPAR7MENT TO SCHEDULE A
PRE -CONSTRUCTION MEE77NG.
2. PRIOR TO DISTURBANCES, THE LIMITS OF DISTURBANCE SHALL BE FLAGGED AND THE 7REE PROTEC77ON FENCING SHALL BE INSTALLED.
J. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUC77ON PROCESS WITHOUT THE APPROVAL FROM THE INSPECTOR
ON THE PROJECT
4. INSTALLATION OF 774E PROPOSED CONS7RUCTION ENTRANCE SHALL OCCUR NEXT THE CON7RACTOR SHALL INSTALL THE PAVED ENTRANCE TO
MEET THE MINIMUM CONS7RUCT70N ENTRANCE REQUIREMENTS SHOWN ON THE THE DETAIL ON THIS SHEET THE CONTRACTOR SHALL ALSO
PROVIDE CONSMUCTION ROAD STABILIZA77ON TO THE SURROUNDING AREA ENVISIONED FOR THE CONTRACTOR PARKING & STAGING AREA.
CONMACTOR SHALL ENSURE 7HE CONSMUCRON ENTRANCE AND PARKING AREA ARE PROPERLY GRADED AND DRAIN TO AN ADEQUATE E&S
MEASURE. 774E CON7RACTOR SHALL INSTALL A PAVED RIGHT-OF-WAY DIVERSION DISCHARGING TO THE PROPOSED SEDIMENT BASIN.
INSTALLED W74ERE CONSTRUC77ON VEHICLE ROUTES INTERSECT PAVED PUBLIC ROADS, PROVISIONS
GENERAL SLOPE (11 OR LESS) PER ACRE
SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR) 7RACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS
TUPE-198
TRANSPORTED ONTO A PUBLIC ROAD SURFACE THE ROAD SHALL BE CLEANED 7HOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL
KENTUCKY 31 FESCUE 128 LBS.
BE REMOVED FROM 7HE ROADS BY SHOVELING OR SWEEPING AND 7RANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. S7REET
RED TOP GRASS 2 LBS.
WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN 7HIS MANNER.
SEASONAL NURSE CROP 20 LBS.
5. THE IN177AL ESC CONS77?UC77ON MEASURES, AS SHOWN ON THE PHASE I EROSION & SEDIMENT CON7ROL PLAN SHALL BE INSTALLED NEXT
150 LBS
THE CONTRACTOR SHALL BEGIN BY INSTALLING THE PERIMETER SILT FENCE. TWO CLEAN WATER DIVERSIONS SHALL BE U77LIZED TO REROUTE
SEASONAL NURSE CROP
THE EXISTING OUTFALL FROM 7HE UPS7REAM RETAIL PROPER77ES AROUND 7HE SITE TO EXIS77NG STORM SEWER. PERIMETER MEASURES
FEBRUARY 16 THROUGH APRIL ANNUAL RYE
INTENDED TO TRAP SEDIMENT SHALL BE CONSMUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE AC77WTY AND SHALL BE MADE
MAY 1 THROUGH AUGUST 15 FOXTAIL MILLET
FUNC77ONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE.
AUGUST 16 THROUGH OCTOBER ANNUAL RYE
6 ONCE THE PERIMETER EROSION CONTROL MEASURES HAVE BEEN INSTALLED, 7HE SEDIMENT BASIN AND OUTFALL BARREL CONNECT70N TO
NOVEMBER THROUGH FEBRUARY 15 WINTER RYE
THE EXISTING STORM SEWER SHALL BE INSTALLED. ONCE 7HE COUNTY INSPECTOR HAS APPROVED THESE MEASURES, 7HE CONMACTOR
SHALL PROCEED TO LIGHT CLEARING OF THE S17E. FOLLOWING 7HE INSTALLA77ON OF THESE MEASURES, 7HE CONMACTOR SHALL INSTALL
NOTES:
THE DIVERSIONS THE DIVERSIONS SHALL MAINTAIN POS177VE DRAINAGE TO THE SEDIMENT 7RAPPING DEVICES AT ALL 77MES THROUGHOUT
1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL
CONS7RUC770N. ANY REMAINING EROSION CONTROL 17EMS AS SHOWN ON THE PHASE I EROSION CON7ROL PLAN SHALL ALSO BE
TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32.
CONSMUCTED AT THIS TIME.
7 ONCE ALL 7HE PHASE I EROSION CON7ROL 17FUS HAVE BEEN INSTALLED & ARE OPERATIONAL, DRAINAGE IS PROPERLY CONVEYED TO 7HESE
2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION
MEASURES, AND THE ESC INSPECTOR HAS GRANTED APPROVAL, THE CON7RACTOR CAN BEGIN CLEARING THE REMAINDER OF THE SITE
OF SEED APPLICATION, IN ACCORDANCE W/ VFSCH STD 3.35.
TSUPORARY SEEDING, PERMANENT SEEDING AND DUST CONMOL SHALL BE IMPLEMENTED AS REQUIRED.
PERMANENT SEEDING SCHEDULE
8. AFTER CLEARING THE PROPOSED AREAS, THE CON7RACTOR CAN PROCEED TO PHASE 11 OF 7HE EROSION & SEDIMENT CON7ROL PLAN. UPON
(��NO SCALE
INSPECTOR APPROVAL, 7HE CON7RACTOR SHALL BEGIN ROUGH GRADING THE S17F TO THE CONTOURS SHOWN ON 7HE PHASE // EROSION &
SEDIMENT CONTROL PLAN. 7HE EXISTING SANITARY SEWER SHALL BE REROUTED AS SHOWN ON 7HE PLANS. THIS WORK WILL BE
(STD. & SPEC. 3.32 OF VIRGINIA EROSION &
COORDINATED W77H THE ACSA. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSMUCTED AS A FIRST STEP WITH ANY LAND
SEDIMENT CONTROL HANDBOOK, 3RD ED.)
DISTURBANCE AC770TY AND SHALL BE MADE FUNC77ONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE.
9. THE CONTRACTOR SHALL INSTALL ANY REMAINING EROSION CONTROL ITEMS AS SHOWN ON THE PHASE 11 EROSION CON7ROL PLAN.
TEMPORARY SEEDING, PERMANENT SEEDING AND DUST CONTROL SHALL BE IMPLEMENTED AS REQUIRED.
10. ONCE ALL 7HE PHASE // EROSION CON7ROL ITEMS HAVE BEEN INSTALLED & ARE OPERATIONAL, THE S17E IS ROUGH GRADED, PERIMETER
WALLS ARE INSTALLED, AND DRAINAGE IS PROPERLY CONVEYED TO SEDIMENT CON7ROL MEASURES AND THE ESC INSPECTOR HAS GRANTED
APPROVAL, 7HE CONTRACTOR CAN BEGIN PHASE N OF THE EROSION & SEDIMENT CON7ROL PLAN. THE PROPOSED PERIMETER WALLS SHALL
BE INSTALLED WHERE SHOWN ON THE PLANS. ANY S17F RETAINING WALL C0NS7RUC77ON THAT OCCURS IN ESC PHASE N WITH THE GRADING
OPERA 77ONS SHALL FILL 7HE AREAS SURROUNDING THE RETAINING WALLS IN A MANNER THA T ENSURES THE FILL LOCA 77ONS ARE LEVEL VER77CALL Y A T THE
END OF EACH WORK DA Y SUCH A PRA C77CE WILL LIMIT CHANNEL FLOW AND PROM07E SHEET FLOW WORK ASSOCIA TED W TH ANY RETAINING WALLS NEAR A
GREENWAY SHALL OCCUR ON THE TOP SIDE TO REDUCE P07EN77AL IMPACT5 TO THE DOWNSTREAM AREA.
11. THE CON7RACTOR CAN BEGIN INSTALLA77ON OF 7HE UTILITIES, SELECT STORM STRUCTURES, CURB AND GUTTER, DRIVE AISLES AND
BUILDINGS. 7HE EXIS77NG CLEAN WATER DIVERSIONS SHALL BE MAINTAINED THROUGH ESC PHASE N TO ENSURE THE SEDIMENT BASIN IS NOT
OVERWHELMED BY OFFS17F DRAINAGE. A TEMPORARY MH AND HOPE PIPE SHALL BE INSTALLED AT SIR 1 AND SIR 17 TO ALLOW THESE
STORM PIPES TO OUTFALL INTO 7HE PROPOSED SEDIMENT BASIN.
12. SMUCTURES 24, 25, 26 AND 34, JJ, 32 SHALL NOT BE CONNECTED TO 7HE UPSTREAM OUTFALL PIPES UNTIL THE SITE IS STABILIZED.
CLEAN WATER DIVERSIONS WLL CONTINUE TO ROUTE UPS7REAM CLEAN WATER AROUND 7HE SITE UN77L THE S17E REACHES STABILIZATION.
13. INLET PR07EC77ON SHALL BE INSTALLED AS THE STORM SEWER IS CONSTRUCTED. INLET PR07EC77ON SHALL BE INSPECTED AFTER EACH
RAINFALL EVENT AND REPAIRS SHALL BE MADE AS NEEDED. IF THE STONE FILTER BECOMES CLOGGED KITH SEDIMENT SO THAT IT NO TABLE 3.31-A
LONGER ADEQUA 7EL Y PERFORMS ITS FUNCTION, THE STONE MUST BE PULLED A WA Y AND CLEANED ANDIOR REPLACED. LIMING REQUIREMENTS
14. ONCE ALL THE PHASE N EROSION CON7ROL 17EVfS HAVE BEEN INSTALLED & ARE OPERA RONAL, AND DRAINAGE IS PROPERLY CONVEYED TO FOR TEMPORARY SITES
SEDIMENT CONTROL MEASURES, AND THE ESC INSPECTOR HAS GRANTED APPROVAL, THE CON7RACTOR CAN INSTALL THE UNDERGROUND
DETENTION SYSTEM AND CONNECT THE REMAINING STORM STRUCTURES INTO THE EXIS77NG UPSTREAM OUTLET PIPES AND THE PROPOSED Rewinniended Application
STORM SYSTEM. pH Test of AWaltural Limestone
15. PERMANENT OR TEMPORARY SOIL STABILIZA77ON SHALL BE APPLIED TO DENUDED AREAS KITHIN SEVEN DAYS AFTER FINAL GRADE IS
REACHED ON ANY POR77ON OF THE S17E TEMPORARY SOIL STABILIZA77ON SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT below 42 3 torts per acre
MA Y NOT BE A T FINAL GRADE BUT WLL REMAIN DORMANT (UNDIS77JRBED) FOR LONGER THAN JO DA Y5. PERMANENT STABILIZA 77ON SHALL
BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 4.2 to 5.2 2 tons per acre
16. THE CON7RACTOR SHALL MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT CON7R0L
HANDBOOK, REMOVING ONLY WEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN ACCORDANCE WITH THE VIRGINIA EROSION AND 51 to 6 1 ton per acre
SEDIMENT CONTROL HANDBOOK.
17 ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL S17F STABILIZA 77ON OR I I
AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWSE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRA TOR. Source: Va. DSWC
TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESUL77NG FROM THE DISPOS177ON OF TEMPORARY MEASURES SHALL BE PERMANENTLY
STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION.
TEMPORARY RIGHT-OF-WAY
DIVERSIONS
TYPICAL GRAVEL STRUCTURE
TYPICAL EARTHEN STRUCTURE
Source: Adapted from Installation of Straw and Fabric Filte
Barriers for Sediment Control Sherwood and Wyant Plate 3.05-1 Source: Va. DSWC
3.11 Pa, ed construction entrance (or erosion control Plans 1992 3.38
Plate 3.11-1
I)NE
sisrRUCT10%
_PSS \
73% , �
j-q,1Hj, , -IL;,\
�_
ICESS I
70' WIN.
- 3* SIM- 2A ASPIHALT TOP
COURSE
" 'At. 4 A AGGREGATE BASE
PROFIL
MIN.
-ASPHALT PAVED
WASHRACK
2% � 1 2%
2% 12' WIN - - -
I
11, POSITIVE DRAINAGE
-MUS- EXT;.:ND F�L� WIDTH Lo To SEDIMENT
OF INGRESS AND E45RESS
OPrRATK)N I TRAPPING DEVICE
rim
PAVEMENT I
I
EXISTING
PAVEWENTJ
SECTION A
A Inunuman Wines IAP of I 0101nantst Ibc InAnNed %%Ilh a Inaluumn I inkh ball(ock
S1111111011%ahe.0pphVIR A Wa.41 110�e M1111 a (11,11111etO Of I � IIIILIIC.� 11-1 34(itute
cojwtudixessuve. Wasiliwalei tulut beLarned a"a% hom the enI an
Wpovedgettkintates to tewove.,eduneul .All ,eilunent ,InUbe pievented fions
entenum 401111 di�v CII ol Watei,,,IUH�
Source: Va. DSWC Plate 3.38-2
SCOTT/R. (715LLINS7
H-H
Lic. No. 035791��
� 10/25/22
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JOB NO.
202199
SCALE
N/A
SHEET NO.
4
PROO ON TO
SERVE AS CLEAN WATER DIVERSION
FOR UPSTREAM PIPED OFFSITE C31
DRAINAGE OUTFALL AND SMALL Z_
PORTION OF
OVERLAND FLOW. CWD W'ILL
CONVEY TO EXISTING DROP INLET.
CONTRACTOR SHALL ENSURE
POSITIVE SLOPE IS MAINTAINED. �D
BERM SHALL BE STABILIZED AS A
CE,
FIRST STEP IN DISTURBANCE,
C-
SLOPES STEEPER THAN 3:1 SHALL E PLANTED WITH
A NATIVE SLOPE MIX WITH ANNUAL RYEGRASS BY NH 0
ERNST CONSERVATION SEEDS AT A RATE OF 60 LBS.
PER ACRE, OR 1 LB. PER 1,000 sf, UNLESS EXISTING OUT A PIPES� 0 REMAIN
OTHERWISE SPECIFIED. THESE AREAS ARE HATCHED UNTIL PORTION DEMO'D TO CONNECT P OP6'SED 18" DIVERSION TO
ON THIS SHEET WITH A 'BM' SYMBOL AND ALSO C; - TO \e TO PROPOSED STORM SEWE1,11. SERVE AS CLEAN WATER DIVERSION SCOTT R. LINS
REQUIRE BLANKET MATTING IN ACCORDANCE WITH THE PHASE Il AT STABIL�,� (D
C \ATIO� FOR UPSTREAM PIPED OFFSITE C-) Lie. No- 035791 .1,
VESCH STD. & SPEC. 3.36. SLOPES SHALL NOT DRAINAGE OUTFALLS AND SMALL
XCEED 2: 1, AS SHOWN. 0
PORTION OF 0 10/25/22
OVERLAND FLOW. CWD WILL
NOTE: OUTLET PROTECTIONS SHALL BE INSTALLED
WHERE DIVERSIONS ENTER THE TEMPORARY SEDIMENT FFE 546.0 WD CONVEY TO EXISTING ROADSIDE IONAL
DITCH AND CULVERT.
BASINS. ALL TEMPORARY OUTLET PROTECTIONS SHALL BE
(4'WxIO'Lx2'D & SHALL CONSIST OF VDOT CL. Al STONE.
I - CONTRACTOR SHALL ENSURE
TREE PROTECTION TAPE TO BE PROVIDED ON LOD WHERE % POSITIVE SLOPE IS MAINTAINED.
1PROPOSED TREELINE LINETYPE SHOWN.
BERM SHALL BE STABILIZED AS A
FIRST ST PP IN DISTURBANCE.
MANAGED STEEP SLOPES 546-
-542 _E
PROPOSED TREE PROTECTION TAPE MANAGED S -E P SLOPES z
z' M
0
---h4o PROPOSED LIMITS OF DISTURBANCE u
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CD
- — -- — -- — --
x PROPOSED 18" DIVERSION TO
CONVEY SITE RUNOFF TO
r-4
PROPOSED SEDIMENT BASIN. 0
CD
CONTRACTOR SHALL ENSURE
POSITIVE SLOPE IS MAINTAINED.
BERM SHALL BE STABILIZED AS 528
A FIRST STEP IN DISTURBANCE.
0
CY)
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CY) >
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LOCATION OF FUELING AREA <
THE FUELING TANK SHALL BE COMPLETELY
<
UPLAND AREA TO BE GRADED TO SURROUNDED BY A 2' DEEP, 2' WIDE EARTHEN >
PROVIDE POSITIVE DRAINAGE TO BERM WITH A HEAVY MIL POLYETHYLENE LINING, -0
C
PROPOSED SEDIMENT BASIN OR BE PLACED IN AN IMPERVIOUS OPEN -TOP LLI <
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>
DUMPSTER. THE PROPOSED BERM OR DUMPSTER
SHALL CONTAIN FUEL IN THE EVENT OF A SPILL.
CONTRACTOR SHALL ENSURE VOLUME CAPACITY
>
PRO OSED SAFETY FENCE 5AF IS 10% LARGER THAN THE MAXIMUM VOLUME OF C/) 0
STORED FUEL. Lu cl�
PROPOSED BAFFLE Lu
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P60SE'b v, L9 '_j 0
LOCATION OF CULVERTINLET r OL u
C
PORTA-POTTIES PR07CTION < 0
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0
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PROPOSED CONTRACTOR CR� STOCKPILE SURROUNDED I
5 PARKING AND S BY SILT FENCE Lu
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STR 38 OUTFALL A rALYSIS >? PROPOSED 18'DIVERSION TO 0 Llj
I Lu 0
EXISTING 24" RCP STORM PIPE >? CONVEY SITE RUNOFF To U) —C
x DD >
S=2.66% Try PROPOSED SEDIMENT BASIN. Q
Qmax=36.9cfs E
CONTRACTOR SHALL ENSURE 0
U) 0 <
ADVANCED AUTO PARTS Q10=3.3cfs x POSITIVE SLOPE IS MAINTAINED. ul
(FROM SWM ROUTING) I \// I/ BERM SHALL BE STABILIZED AS
x A FIRST STEP IN DI!TU
JRBANCE. Lu
0
PROPOSED CONCRETE LLJ Lu F__4
U
ESC BASIN OUTFALL Q10=16.8cfs WASHOUT AREA z z
528 w
QIO OVERLAND LOCATION OF 15 CY DUMPSTER GO
REA=0.48 ac., Cw=0.41, Tc= W < ce z
5min.
I10=6.7, Q10 OVERLAND= 1.3cfs UGE F_ 0
G_ 0
Moog ��UG V&
SOON UG fh Lu 0
10 TOTAL=21.4cfs < QMAX=36.9cfs (CHECK) INS: I me
IGL— >
GE— UG UGE — UGE — UGE
UGE
UG��UGE�UGE—UGE'
UGE�UGE�UGE_
GE UGE UGE <
UGE — UGE UG; UGE UGE --UGE— -E—
STIR 38 'GE
IP 526
41% GE T CWD2 OUTFAL ANA SIS C:)
GE
EXISTING CULVERT 15" RCP C:) x
UGE � 1 J 0
uGE 0 OSEDli'DIV RSION. INV. IN=525.46, INV. OUT=524.60
UGE — UGE — JG UG UG, — — — — — — — — —
UG GE U UGE E ux x x x x x x X DD TOR SHALL ENSURE �=162.1, S=0.53%
—X"'zr '—X—X—X—X—X—X _x x_x_x
ONTRAC 00 Qmax=4.70cfs (MANNINGS)
'Ea� &S�OMG4T��\
TR 37 SH LL BE CONTINUED OSITIVE SLOPE IS MAINTAINED.
RIM=524.64 TO REMAIN IN ESC NTRACTOR SHALL INSTALL A so w 0
AN ADDITIONAL 26.5 LF AT __.jRERM SHALL BE STABILIZED AS A MONO 0
Q10 OVERLAND FLOW
PROPOSED 0.53% SLOPE FOR **HASES I, II, & III TO CONTINUE RWD R/W DIVERSION ACROSS THE FIRST STEP IN ISTURBANCE. t C
CONSTRUCTION --------- AREA=0.56 ac., Cw=0.53, Tc=5min.
TO CONVEY ADVANCED AUTO ENTRANCE SF PROPOSED SILT FENCE u
ESC TO SERVE AS BARREL AND m I Lu
PARTS RUNOFF (VIA CWD), UPON m—m—m—m 110=6.7. Q10 OVERLAND= 1.99cfs 0 w
DRAIN PROPOSED 48" Ris R 0� y 0
STABILIZATION RUNOFF SHALL ALL _M 'Ln ll�
m N k0?O_5_E_DPA_VED A'STRUCTION M QIO WALGREENS=2.15cfs JOB NO.
/V\ — ROUTE TO THE UNDERGROUND m 7ROPOSED SILT�BNCE CE III 111 11 111 9�
n=7=KMTnftl CVC��M AKIn 7WC L I ENTRA �El ' O'MIN. — ILL__
XISTING STORM GRATE SHALL BEW_=__,� — li ------- LLI—krmurl avvri muU1111u) 202199
REMOVED. GRAPHIC SCALE QIO TOTAL=4.14cfs < QMAX=4.70 cfs (CHECK!)
SCALE
w 20 0 10 10 40- 11
wv. 1 =20'
SHEET NO.
IN FEET
1 inch = 20 ft. 5
PROO ON TO
SERVE AS CLEAN WATER DIVERSION
FOR UPSTREAM PIPED OFFSITE
C31
DRAINAGE OUTFALL AND SMALL
PORTION OF
OVERLAND FLOW. CWD W'ILL
CONVEY TO EXISTING DROP INLET.
CONTRACTOR SHALL ENSURE
POSITIVE SLOPE IS MAINTAINED.
CWD
BERM SHALL BE STABILIZED AS A
S
FIRST STEP IN DIS URBANCE,
H 0
EXISTING OUT NALL�iPEs'm REMAIN
UNTIL PORTION DEMO'D TO CONNECT P OP6'SED 18" DIVERSION TO
C; - (Z SERVE AS CLEAN WATER DIVERSION SCOTT R. LINS
T01\6 TO PROPOSED STORM SEWER IN
PHASE Il AT STABIL�,- ATIO� FOR UPSTREAM PIPED OFFSITE
DRAINAGE OUTFALLS AND SMALL U Lic. No. 035791 4�
4e�� PORTION OF 0 10/25/22
vvtm�Nu rLVVV. %-VVLJ WILL
FFE 546 WD CONVEY TO EXISTING ROADSIDE �NXAL
DITCH AND CULVERT.
CONTRACTOR SHALL ENSURE
POSITIVE SLOPE IS MAINTAINED.
TEMPORARY 15" SLOPE DRAIN TO BE BERM SHALL BE STABILIZED AS A
INSTALLED TO CONVEY ADVANCED FIRST ST PIN DISTURBANCE.
TSD AUTO PARTS OUTFALLTO CWD AND 546—
EXISTING STORM GRATE— BM PR40SED BLANKET MATTING
------ PROPOSED TREE PRO ECTION TAPE
z
M
0
0 PROPOSED LIMITS OF DISTURBANCE u
0 Lu
0
PROP 0
SIF OSED I T FENCE co
<
F-
0
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A �_u V)
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zi
=Zzzzzzzz
- — -- — -- — -- — -- — --
z!
530 zz
y y y Y-1 zzzzzzzz: r1i
zzizzzzzz
r1i
CD
PROPOSED 18" DIVERSION TO w
CONVEY SITE RUNOFF TO — ------
0
r*,
PROPOSED SEDIMENT BASIN. CD
CONTRACTOR SHALL ENSURE
POSITIVE SLOPE IS MAINTAINED.
BERM SHALL BE STABILIZED AS 528 E
A FIRST STEP I DISTURBANCE.
0
>
CY)
Lu
CY) >
C"i 0
CY)
0
C"i >
S CD < 0
T w CY) _J LU -0
LOCATION OF FUELING AREA Lr) —
<
THE FUELING TANK SHALL BE COMPLETELY <
SURROUNDED BY A 2' DEEP, 2' WIDE EARTHEN >
x
BERM WITH A HEAVY MIL POLYETHYLENE LINING, LLi
cc
OR BE PLACED IN AN IMPERVIOUS OPEN -TOP CDP DC
DUMPSTER. THE PROPOSED BERM OR DUMPSTER TS
SHALL CONTAIN FUEL IN THE EVENT OF A SPILL.
CONTRACTOR SHALL ENSURE VOLUME CAPACITY
PRO OSED S FETY FENCE: F IS 10% LARGER THAN THE MAXIMUM VOLUME OF U)
lk 1 0
TORED FUEL. Lu a
PROPOSED 3AFFLE
Lu F
UIE z
0 0 0 0
P60SE'b L9 i in —
LOCATION OF CULVERTINLET p 0� u
PORTA-POTTIES PR07CTION OEM; < 0
_j
0 Lu
0
PROPOSED CONTRACTOR4 KPILE SURROUNDED �"� - 1 0) 1 _w
PARKING AND STAGING AREA >
F BY SILT FENCE
STIR 38 OUTFALL A rALYSIS PROPOSED 18'DIVERSION TO C) 0
Lu —
Lu 0
U) C
EXISTING 24" RCP STORM PIPE CONVEY SITE R �OF DD >
S=2.66% U NT FTO . Q 0
Qmax=36.9cfs PROPOSED SEDIME BASIN E
x D 0
CONTRACTOR SHALL ENSURE
W <
ADVANCED AUTO PARTS Q10=3.3cfs x POSITIVE SLOPE IS MAINTAINED. ul 0
(FROM SWIM ROUTING) BERM SHALL BE STABILIZED AS
A FIRST STEP IN DISTURBANCE. Ljj
ESC BASIN OUTFALL Q10=16.8cfs PROPOSED CONCRETE Lu jjj 0
\X WASHOUT AREA z
X 528 w
Q10 OVERLAND -qq%l — 0 w
AREA=0.48 ac., Cw=0.41, Tc=5min.. LOCATION OF 15 CY DUMPSTER U) z
I10=6.7, Q10 OVERLAND= 1.3cfs I Him m.m M m M 0�
uj
UG V&
sjk�
ft s s s fh . Lu 0
Q10 TOTAL=21.4c < QMAX=36.9cfs (CHECK) -------- �A III A S..-_� J >
"qq UGE UGE UGE UGE UGE OGE
s UGE
U'el GE
UG
4�
UGE UGE s UGE <
UGE UGE u UGE UG �_— ;;7�. s
STR38 'GE ..... ..... �s (D
41% IP 526s'*_-�s GV s ..... S CWD2 OUTFAL ANA SIS C:)
EXISTING CULVERT 15" RCP x
�s .....
UGE JG V ROPOSED I DIV RS�ION. INV. IN=525.46, INV. OUI
ONTRACTOR SHALL ENSURE �=162.1, S=0.53%
UX __X"�r _X X X X
X
00 Qmax=4.70cfs (MANNINGS)
UGE UG UG, UG GE U E x x x x x DD
7_7
— ------ TIR 37 SH ILL BE CONTINUED 'Ea� S OR PROPOSED SANITARY SEWER OSITIVE SLOPE IS MAINTAINED.
IT F__ RIM=524.64 TO REMAIN IN ESC ���NTR�A=2 I I INSTALL A so
AN ADDITIONAL 26.5 LF AT REALIGNMENT ..wmmmmJBERM SHALL BE STABILIZED AS A MONO
4%PHASES I, II, & III TO CONTINUE RWD R/W DIVERSION ACROSS THE Q10 OVERLAND FLOW
PROPOSED 0.53% SLOPE FOR FIRST STEP IN ISTURBANCE.
TO CONVEY ADVANCED AUTO CONSTRUCTION ENTRANCE SIF PROPOSED SILT FENCE AREA=0.56 ac., Cw=0.53, Tc=5min. u
ESC TO SERVE AS BARREL AND m
PART Lu
DRAIN PROPOSED 48" IRIS R S RUNOFF (VIA CWD), UPON m 110=6.7. Q10 OVERLAND= 1.99cfs
STABILIZATION RUNOFF SHALL ALL m M y
kb]PO_5_E_D —PAVED C
/V\ ROUTE TO THE UNDERGROUND M ENTM�O'M Q10 WALGREENS=2.15cfS JOB NO.
DETENTION SYSTEM AND THE m ��_11110_SEDSILT�ENCE CE &STRUCTION (FROM SWIM ROUTING)
IN. 202199 '00
XISTING STORM GRATE SHALL BE
REMOVED.
::E GRAPHIC SCALE Q10 TOTAL=4.14cfs < QMAX=4.70 cfs (CHECK!) SCALE
w 20 0 10 20 —40 11
wv. 1 =20'
SHEET NO.
IN FEET
6
:E 1 inch = 20 ft.
PROO ON TO
SERVE AS CLEAN WATER DIVERSION
FOR UPSTREAM PIPED OFFSITE
C31
DRAINAGE OUTFALL AND SMALL
PORTION OF
OVERLAND FLOW. CWD WILL
CONVEY TO EXISTING DROP INLET.
CONTRACTOR SHALL ENSURE
POSITIVE SLOPE IS MAINTAINED.
C D
BERM SHALL BE STABILIZED AS A
FIRST STEP IN DIS URB CE,
topY IE '_�IN TO Be
PORARY I' 7SLOPE DRA N �T�
P
L
TS INST7ALLED T6 CONVEY ADVANCED
I ITn A IZT, 1�lnl
'r
AUTO PARTS OUTFALL TO CWD AND
STR 34 & 32 SHALL LY BE H
CONNECTED TO EXISTING OUTFALL W
PIPES UPON STABILIZATION OF SITE.
CWD 2 SHALL REMAIN IN PLACE P OP6'SED 18" DIVERSION TO
C; - WHILE PHASE III CONSTRUCTED. SERVE AS CLEAN WATER DIVERSION SCOTT INS
Tollo ONCE SITE APPROVED UGD SHALL BE FOR UPSTREA (D
TNIC I I CM ANIM C�D IA 0. 1� CUAI I M PIPED OFFSITE I � T 4 AT nQ��ol
EXISTING STORM GRATE DRAINAGE OUTFALLS AND SMALL C. 0-
0 ONVEY UPSTREAM RUNOFF THRU PORTION OF 10/25/22
SITE. OVERLAND FLOW. CWD WILL 0
STR 26 & 24 SHALL ONLY BE IF,
CONNECTED TO EXISTING OUTFALL 546 6 VA WD CONVEY TO EXISTING ROADSIDE IONAL
DITCH AND CULVERT.
PIPES UPON STABILIZATION OF SITE.
CWD I SHALL REMAIN IN PLACE
STR 26 &
Co NNEC
ES U P
T
P C
IP D I SH
CW
WHILE PHASE III CONSTRUCTED. EXISTING WALGR CONTRACTOR SHALL ENSURE
CE S I EENS POSITIVE SLOPE IS MAINTAINED.
S
IT
S U BERM SHALL BE STABILIZED AS A
ONCE SITE APPROVED UGD SHALL BE NDERGROUND DETENT�101\1
LINSTALLED AND STR 26 & 24 SHALL
I
-CO V Y U SYSTEM 7TURBANCE.
FIRST ST
CONVEY UPSTREAM RUNOFF THRU
S SIT
ITE.
PROPOSED TREE PROTECTION 1.1� I
z
M
0
PROPOSED LIMITS OF DISTURBANCE u
54n
IN A 0
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a
*Oil �_77 F-
Q� u z
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CASPIAN LANE
_7
8!_P.R__l)VATE ACCES z
Lu
F
cgj
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0
m m
iz
ZZ
'jNJOIED 181�_LIVERSI To
CONVEY SITE RUNOFF TO
PROPOSED SEDIMENT BOSIN
r1i 0
m
r-4
CONTRACTOR SHALL ENSURE CD
3: POSITIVE SLOPE IS MAINTAINED. r1i
BERM SHALL BE STABILIZED AS 0
CD
A FIRST STEP IN DISTURBANCE.
s
-- --- ---- ---------- ------
------ 52 �PROPOSEQ,
L
cul)) —MULT14FAMILY
1 BUILDING #4 ------- 0
�PROPOSED
C)
ULTI-FAMILY ------
!BUILDING #1 CY)
m
--------------- ---------- < 7,306 SF
w u
x i I__ � Lu
1 8 UNITS < U
x > u
x 4,865 SL�]
cv�
LL >
R0 SE� EMPORARY MH AT PIPE 117 To 0 a- CY)
% 0
z
CONNECT PROPOSED 24" HOPE PIPE TO Eo C"i
ALLOW STORM TO DRAIN TO SEDIMENT BASIN
INV IN.=519.43, INV OUT.=518.00 CY)
L=21.4' S=6.6%
0
x
IL ---- I
PkOPOSED
AN >
I - < 0
><. MULTI-FAMIL 6PbSED CY) _j uj "
. — 1� N 0
----------- WIL-DING42 (a — I MULTI-FA�MtL-Y- a- Ln -
OCATIOVOF FUELING AREA w
1�6 UNITS BM-D[Np #6
T,
I < m
0,710 SF THE FUELING TANK SHALL BE COMPLETELY 16 UNITS
;> I < URROUNDED BY A 2' DEEP, 2' WIDE EARTHEN 9,710, S#\ >
—BERM WITH A HEAVY MIL POLYETHYLENE LINING,
V)
OR BE PLACED IN AN IMPERVIOUS OPEN -TOP Lu
>
DUMPSTER. THE PROPOSED BERM OR DUMPSTER —
HALL CONTAIN FUEL IN THE EVENT OF A SPILL.
CONTRACTOR SHALL ENSURE VOLUME CAPACITY
\% >
PRO OSED SAF FENCE F S 10% LARGER THAN THE MAXIMUM VOLUME OF % P140POSED
\;c U)
p Lu 0
T UEL.
PR i MU
OPOSED BA FLE TS -41-FAMIC - Lu
PROPO�ED BUILDING #5 F F 0
I 10)UNIT UGE 0 2: z -6
PROPOSED T�MPOPA Y MHV PIPE 1 ------------ MULTI -FAMILY I 'w I— P60SED L9 '_'j j:)L 0
�16 6,lp5 SF_ CULVERT INLET u
COCA N OF
CONNECT PROPOSED 24" HDPE PIPE TO ALLOW PORTA-POTTIES
P 07CTIO < 0
STORM TO DRAIN TO SEDIMENT BASIN 10 UNOIS _j
INV IN.=519.11, INV OUT.=518.00 r) V\%
6,405-$F z
6%A 0
L=22.5' S=4.9% Lu
PROPOSED cbNTRACTOR DC Lu
U)
I >
PARKING AND STAGING AKEA uj
C2
STR 38 OUTFALL A rALYSIS Lu 0
EXISTING 24" RCP STORM PIPE Lu
Lr)
S=2.66%
Qmax=36.9cfs ----- ----- ul C) in
E
U) o Z 70
ADVANCED AUTO PARTS Q10=3.3cfs x < 0
------------- ---------
(FROM SWM ROUTING) --------- ----------------
Lu
PROPO�ED CONCRETE IP Lu Lu 0
ESC BASIN OUTFALL Q10=16.8cfs WASHOUT AREA U
z
--------- 000 z
QIO OVERLAND LOCATION OF It CY DUMPSTE
AREA=0.48 ac., Cw=0.41, Tc=5min. U) < 0 z
p
I10=6.7, Q10 OVERLAND= 1.3cfs X//;\ IP
Lu 0
UGL
S?
fs < s sun" 0
Q10 TOTAL=21.4c (CHECK) fh
C s s Lu
UGE >
UGE UGE U
New s
<
UGE
STR 38 s
p �,26 — — — — — — — CWD2 OUTFAL ANALYSIS C:)
s EXISTING CULVERT 15" RCP 6
GE x
E—UGF—IICF INV. IN=525.46, INV. OUT=524.60
UGE UGE JG UGE G UGE G L=162.1, S=0.53%
N M�_ MAE Qmax=4.70cfs (MANNINGS)
—STR 37 HALL BE CONTINUED' NP,\, �� -, w
IT— I - 1, IRIM=124,64 TO REMAIN IN ESC NTRACTOR SHALL INSTALL A
AN ADDITIONAL 26.5 LF AT
4t
PROPOSED 0.53% SLOPE FOR PHASES I, II, & III TO CONTINUE RWD R/W DIVERSION ACROSS THE Q10 OVERLAND FLOW
TO CONVEY ADVANCED AUTO IP CONSTRUCUON FNTRANQ SF PROPOSED SILT FENCE u
ESC TO SERVE AS BARREL AND AREA=0.56 ac., Cw=0.53, Tc=5min. Lu
110=6.7. Q10 OVERLAND= 1.99cfs 0
DRAIN PROPOSED 48" Ris R ---"ARTS RUNOFF (VIA CWD), UPON WOP�TFI CROSSING
m m
m
STABILIZATION RUNOFF SHALL ALL, /V\ M y 0
/V\ ROUTE TO THE UNDERGROUND �0POSED —PAVED C81 STRUCTION U) ll�
M Q10 WALGREENS=2.15cfS JOB NO.
m
DETENTION SYSTEM AND THE SED SILT�ENCE CE ENTRA CE 1 O'MIN. FROM SWM ROUTING)
XISTING STORM GRATE SHALL BE 202199
::E REMOVED. GRAPHIC SCALE Q10 TOTAL=4.14cfs < QMAX=4.70 cfs (CHECK!) —
SCALE
20 0 10 20
w wv. 1 11=20'
SHEET NO.
IN FEET
1 inch = 20 ft. 7
PROPOSED SEDIMENT BASIN
SCALE 111=10'
FA
STR 38 ---/
STR 37 -j
EXISTING STM PIPE
J1,L - UGE - UGE - UGE - UGE - UGE -
TS
Mir's,
PROPOSED 48" RISER
7/ RIM=523.4
DEWATERING ORIFICE=521.5
CLEANOUT ORIFICE=520.2
PROPOSED 18" BARREL
iq� 8
INV IN. 519.11
INV OUT. 518.82
54.9 LF @ S=0.53%
(INSTALL PIPE 37 AND
CONTINUE AT SLOPE FOR ESC
BARREL)
GRASS LINED EMERGENCY
SPILLWAY AT ELEV. 525.00
111
EXISTING SANITARY SEWER
EASEMENT
UGE - UGE - UGE - UGE - UGE - UGE - UGE - UGE - UGE - UGE - UGE - UGE - UGE � UGE � UGE - UGE - UGE - UGE - UGE - UGE - UGE - UGE - -
GRAPHIC SCALE
10 0 5 10 20
IN FEET
I inch - 10 ft.
Sediment Basin #1 Design
MIN. 1. W1 SPILLWAY CREST OF EMERGENCY
TWITHOUT SPILLWAY
drainage area (acres) 3.75 DESI%N.41,GH WATER
basin \,olumes: (using 2'contour inter\,als) (25 S ORM ELEV.)
ele\,ation (ft) contour area (sf) \,olume (cy) r- My
518 988 0 MIN. .0' 1
........... .....
RISER CRESr
520 1,972 107.6 DRY STORAGE ...... DEWATERING
...... DEVICE
522 3,186 296.8
WET " STORAGE
524 4,626 584.5
526 6,293 987.3 SEDIMENT CLEANOUT POINT
WET - STORAGE REDUCED
TO 34 C.Y./ ACRE)
wet storage:
wet storage required (cy) (67*DA)
251.3
design high water (ft)
525.00
dewatering orifice ele\,ation (ft)
521.5
top of dam (ft)
526.00
wet storage pro\Aded at this ele\,ation (cy)
251.3
top width of dam (ft)
10.0
available volume before cleanout (cy) (min.
34*DA)
127.5
bottom of basin (ft)
518.00
cleanout ele\,ation (ft)
520.2
approx. bottom dimensions:
18'x59'
distance from cleanout to orifice (ft) I(> V)
1.30
upstream face slope:
3:1
downstream face slope:
3:1
dry storage:
dry storage required (cy) (67*DA)
251.3
baffles:
YES
principle spillway crest (ft)
523.4
length of flow, L (ft)
21
dry storage pro\Aded at this elevation (cy)
251.3
effecti\e width, We (ft)
199
diameter of dewatering orifice (in)
5.0
L / We (baffles not required if > 2)
0.11
diameter of flexible tubing (in) (orifice+2")
7.0
collars:
YES
runoff:
depth of water at spillway crest (ft)
5.40
C (use 0.45 for bare earth)
0.67
slope of upstream face (Z:1)
3:1
tc (min)
6
slope of barrel (Sb)
0.53%
1 2yr 3.6
Q 2yr
9.0
length of barrel in saturated zone (Ls)
38.62
1 25yr 6.7
Q 25yr
18.4
number collars required
2
dimension of collars
3.9x3.9'
principle spillway:
available head (ft)
1.60
emergency spillway:
YES
diameter riser (in)
48
required capacity (Q25-Qp) (cfs)
0.0
spillway capacity, Qp (cfs)
45.00
bottom width (ft)
10
diameter trash rack (in)
72
slope of exist channel (ft/ft)
33%
barrel length (ft)
54.9
minimum length of exit channel (ft)
21
head on barrel through embankment (ft)
6.18
crest of spillway (ft)
525.00
diameter of barrel (in)
18
SCOTT/R. MPLLINS�Z�
Lic. No. 035791 11L�'
10/25/22
A
';�"�'--IONAL
Z
0
U
UO
Z
0 z
0
Ln
LD
LID
Z
W
0
U
C)
CY)
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(y)
C)
CY)
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-j
U)
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0
LLl
LU
LU
LU
121�
ry
C)
C)
(N
Z L'r)
< Z
0
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>
U
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LU F-
0
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LU Z
LU
>
LU
C) p
LU
0 Ur)
0
0
LU 0
_j
0-
< 0
0�
LU
JOB NO.
202199
SCALE
1 if =1 0'
SHEET NO.
8
��v 4 1 - — 154� � CHANNELANDFLOOD PROTECTION COMPLIANCE SUMMARY
_54� SEA111VOLE 7-k Point of Method of 9VAC25 Method of 9VAC25-870-66 Method of 9VAC25-870-66 Method of 9VAC25-870-66 TH 0
STORMWATER MANAGEMENT NARRATIVE: -870-66
AIL Limits of Analysis for Channel Limits of Analysis for Flood
OVERVIEW ROL)7-E 29 Analysis Channel Protection Compliance Protection Flood Protection Compliance Protection
THIS VSMP PLAN IS FOR THE PROPOSED MAPLEWOOD DEVELOPMENT. RESIDENTIAL TOWNHOUSES (/VOR7-1Lj8Otj/V0
AND THEIR ASSOCIATED INFRASTRUCTURE ARE PROPOSED, AND STORMWATER TREATMENT IS 1 ISection 13.3.a (Energy Balance) N/A (Energy Balance Satisified) ISection C.2.b (10-yr Post-Dev. Flow < 10-yr Pre-Dev. Flow N/A (Met with Section C.2.b) SCOTT R.. LINS%
PROVIDED TO MITIGATE THE IMPACTS FROM THE PROPOSED IMPROVEMENTS. THE STORMWATER
MANAGEMENT (SWM) PLAN COMPLIES WITH PART IIB SWM REQUIREMENTS. �44 U Lic. No. 035791,1,
WATER QUALITY SUMMARY -544
10/25/22
THIS DEVELOPMENT REQUIRES THE REMOVAL OF 4.57 Il OF PHOSPHOROUS. THIS
PHOSPHOROUS REMOVAL RATE IS MET THROUGH THE BEST MANAGEMENT PRACTICE OF IOIVAL
PURCHASING NUTRIENT CREDITS. PLEASE SEE THE ATTACHED STORMWATER MANAGEMENT
CALCULATIONS PACKET FOR ADDITIONAL DETAILS.
WATER QUANT]ITY SUMMARY
THE EXISTING ADVANCED AUTO PARTS DEVELOPMENT (SUBAREA AAP) AND THE EXISTING
WALGREENS DEVELOPMENT (SUBAREA WALGREENS) ARE LOCATED IMMEDIATELY UPLAND OF THE
PROPOSED MAPLEWOOD DEVELOPMENT. THESE TWO EXISTING DEVELOPMENTS HAVE
UNDERGROUND DETENTION (UGD) FACILITIES THAT DISCHARGE DIRECTLY ONTO THE PROPOSED
DEVELOPMENT's PROPERTY. IN THE EXISTING CONDITIONS THE DISCHARGED RUNOFF FLOWS
THROUGH THE SUBJECT SITE VIA A GRASS -LINED OPEN CHANNEL AND IS COLLECTED IN A STORM
SEWER AT POINT OF ANALYSIS #1. IN THE POST -DEVELOPMENT STATE THE DISCHARGED RUNOFF
WILL BE CAPTURED VIA NEW STORM SEWER, WHERE IT AND THE MAPLEWOOD DEVELOPMENT's z
RUNOFF (SUBAREA 1) WILL RECEIVE ATTENUATION IN A NEW UGD SYSTEM BEFORE THE RUNOFF IS 0
REINTRODUCED INTO THE STORM SEWER AT POINT OF ANALYSIS *1. U
DUE TO THE COMPLEX NATURE OF THREE (3) CONTRIBUTING DRAINAGE AREAS WITH VARYING
PEAK DISCHARGE TIMES TO POINT OF ANALYSIS #1, HYDROGRAPHS WERE CREATED FOR ALL X
THREE SUBAREAS (AAP, WALGREENS AND DA 1) TO ACCURATELY DEPICT THE PEAK FLOWS TO
POINT OF ANALYSIS *1. THESE THREE HYDROGRAPHS WERE THEN OVERLAID AND SYNCHRONIZED.
0
THE RESULTANT PRE -DEVELOPMENT SYNCHRONIZED HYDROGRAPHS WERE USED IN THE CHANNEL SUBAREA AAP
AND FLOOD PROTECTION COMPUTATIONS, AND THE RESULTANT POST -DEVELOPMENT k: 0
(ADVANCE AUTO PARTS DATA . l
'S ROU 10�
SYNCHRONIZED HYDROGRAPHS WERE INPUTTED INTO THE PROPOSED UGD SYSTEM #I'S ROUTING z
PER APPROVED WPO 200600016) U 0
ANALYSIS. THE ROUTED FLOWS FROM THE PROPOSED UGD SYSTEM #1 DISCHARGE DIRECTLY TO U-)
POINT OF ANALYSIS #1. THESE ROUTED FLOWS WERE USED IN THE CHANNEL AND FLOOD W
PROTECTION CALCULATIONS. UGD SYSTEM #I's OUTFALL IS THE ONLY PROPOSED CONCENTRATED z
OUTFALL. 0 0
Ln
U)
CHANNEL PROTECTION IS MET AT POINT OF ANALYSIS #1 VIA 9 VAC 25-870-66, SUBSECTION B.3.a
Lu Z
(ENERGY BALANCE). THE LIMITS OF ANALYSIS TERMINATES AT POINT OF ANALYSIS #1 SINCE
SUBSECTION B.3.a IS SATISFIED. FFE 545.8 X
FLOOD PROTECTION IS MET AT POINT OF ANALYSIS #1 VIA 9 VAC 25-870-66, SUBSECTION C.2.b <
>
Uj
(10-yr PEAK POST -DEVELOPMENT FLOW IS LESS THAN 10-yr PEAK PRE -DEVELOPMENT FLOW). THE /Util
LIMITS OF ANALYSIS FOR THE FLOOD PROTECTION ENDS AT POINT OF ANALYSIS #1 SINCE
SUBSECTION C.2.b STATES "DOWNSTREAM STORMWATER CONVEYANCE SYSTEMS DO NOT REQUIRE pole <
l
SUBAREA WAILGREENS z
ANY ADDITIONAL ANALYSIS TO SHOW COMPLIANCE WITH FLOOD PROTECTION CRITERIA IF THIS
OPTION IS UTILIZED." (WALGREENS DATA PER _,�44
PLEASE SEE THE ATTACHED STORMWATER MANAGEMENT CALCULATIONS PACKET FOR ADDITIONAL APPROVED WPO 200600016)
DETAILS. U,,11
P Is
INV. All.
530 pole
LU r1i
Ln
FFE 546.0 r1i
CD
C Q,
54,1�
0
42-� _TA
F�- ----540 -, .. \ *:A
0 0
0 'PC)
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pole
530
CD
LLJ
>
al�ead
sign Ld Lu
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>
100' OF OLF w/ A ELEV.=15' 0 0 Nil
LU
225' OF CONC. FLOW W/ 0
A ELEV. TO THE INLET=3.3' LU LLJ
L9 0 2: F—
_j 0- <
10� 0
011 C
'00, C) LU 0
PRE-DEV. SUBAREA 1 Fh. >
(LOCATION OF PROPOSED W . ijj U-)
W
DEVELOPMENT)
WV. LU
0 C)
LLJ
C� U) 0
0
�tn 0 s LU _j
LU
LU LU >
0� _j LU
I— M
U) <
F_ LU
CL
LU
528 <
V.
stree C:)
sign
VA
Ins.
Existing Impervious Area Summary UG�
UGE UGL 04
DA 1 (Water Quantity) E UGE! jGE 0
Existing Gravel 1,393 s UGE: UGE UG 135mph LU
Existing Roadway 4,915 V.
W U
6,308 sf �'E - UGE E UGE UGE UGE — I -
UGE UGE UGE UG UGE 1JGE UGE J
0 LU
WATERSHED SUMMARY AT POINT OF ANALYSIS #1 cb
POINT OF ANALYSIS# Ln
(USED FOR CHANNEL & FLOOD PROTECTION COMPLIANCE) EXISTING 24" RCP (TO REMAIN) JOB NO.
W M
M—M
Pre -Development 202199
Area, Time of 1-year 2-Vear 10-year
CN ac. Conc., hrs. Flow, cfs Flow, cfs Flow, cfs WORTH CROSSING GFAPHIC SIC SCALE
W — - 1__� If
DA AAP 91 0.65 0.10 WY. 30 0 60 1 =30'
DAVIALGREENS 89 2.02 0.14 3.62 6.61 24.27 W
DA 1 (Pre-Dev.) 62 3.75 0.13 — - - — - - SHEET NO.
74 6.42 !�o IN FEET 9
DA I twater Quantity)
Buildings (1-6)
43,798 sf
Sidewalks & Concrete Pathways
9,897 sf
Roadways & Parking
33,124 sf
Driveways
12832 sf
Recreation Hardscape
1,365 sf
�m I
FA IV
M"M 3111410 1 MIN 114
=111111M. I I ARE
J
WATERSHED SUMMARY AT POINT OF ANALYSIS #1 POINT OFAN'ALYSIS #1,
(USED FOR CHANNEL & FLOOD PROTECTION COMPLIANCE) EXISTING 24" RCP (TO REMAIN)
I I
Post- Development I F-
Area, Time of 1-year 2-year 10-year
CN
ac. Conc., hrs. Flow, cfs Flow, cfs Flow, cfs
DA AAP
91 0.65 0.10
DAWALGREENS
DA 1 (Post-Dev.)
89 2.02 0.14 1.46 4.56 22.92
84 3.75 0.10
T
86 6.42
1
I
. �F��j
.1 Iv
SHEET NO.
IN FEET 10
=ch I
Pre -Development Water Quality Impervious Area
(VRRM Boundary Defined by the ESC LOD Boundary)
Existing Gravel 1,400 Sf
Existing Roadway 8,750 sf
10,150 sf
Water Quality Ground Cover Summary
(Pre -Development)
Forest / Open Space Area
0 ac.
Managed Turf Area
3.86 ac.
Impervious Area
0.23 ac.
4.09 ac.
Post -Development Water Quality Impervious �
IVKKFV1 Lsounaary ueTinea oy ine UIL LULP Lsounaaryi
Buildings (1-6)
43,798 sf
Sidewalks, Conc. Pathways & Recreation
10,125 sf
Roadways & Parking
27,450 sf
Driveways
12,825 sf
Offste Travelways
11,175 sf
Offsite Sidewalk & Pathway
6,025 sf
Water Quality Ground Cover Summary
(Post- Development)
Forest / Open Space Area
0 ac
Managed Turf Area
1.53 ac�
Impervious Area
2.56 ac.
4.09 ac.
General Construction notes for Stormwater Manaaernent Plans
1 . All dams and constructed fill to be within 95% of maximum dry
density and 2% of optimum moisture content. All fill material to
be approved by a geotechnical engineer. A geotechnical engineer is
to be present during construction of dams.
2. Pipe and riser joints are to be watertight within stormwater
management facilities.
3. For temporary sediment traps or basins which are to be converted
to permanent stormwater management facilities; conversion is not
to take place until the site is stabilized, and permission has been
obtained from the County erosion control inspector.
FFE 546,0
conc
1
if
530
536 — 5J4-� 0/,
534--
Z
NO,
dnq,� \,0
528—
THE PROPOSED E51C� LIMITS 9�DISTURBANC
BOUNDARY (4.09 ac.) IS USED T& ' DEFINE
THE VRRM WA7R QUALITY BOUNDARY.
0 ol
Wn...
it,
ut
h, it
528—
G�
;1111imillIM0111r� —7—UGE =JCE OGF7
------- UGE UGE UGE
06rp— UGE— ul��_U,:E\
526 �Mmph 0
UGE UGE GE UGE UGE UGE UGE UGE UGE UGE UGE OG� T
ru 1� J, I, ___7
M
M-1 h GRAPHI,� SC LE
A�ICI M M
11111111 FWr0')RTH C bz:�ilm%� 0 20 40 80
�ET
--�l �,,,h 40 ft
L
I r_1
4---
THE PROPOSED ESC LIMITS OF DISTURBANC
BOUNDARY (4.09 ac.) IS USED TO\DEFINE
THE VRRM WATER QUALITYBOUNPARY.
--
--------
7T7
C
M
c�
C
---------
4----
I
4
J
C
C
�M
E — — (�E
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7
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4 ir ----------- I
,:L, M M M ::�� if
---------- 010�0101010100 7 GEATJHI,� SIC,
49 — 0 20 40
�J[AORTH CKU
ET
�—�l inch 40 ft
"H 0
H 0
C�
1�
SCOTT R. LINS�%
,,Li1c. No. n035791,1,
10 2 22
10/25/22
1*1S11nArAT A��
Z I
0 7
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Lu
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JOB NO.
202199
SCALE
1 11=40'
SHEET NO.
2016 ROAD & BRIDGE STANDARDS
SWM-DR
I/,"x4" ADHESIVE OLT,
SELF-LOCKING HEX. NUT.
- - - - - - FLAT WASHER. ME.
2Y4'* �4 1. COST OF DEEMS RACK, METAL PLATE. AND DEBRIS
_L' RACK HOLDER TO BE INCLUDED IN THE BID PRICE
N" DLAL HOLE� FOR THE SWIM DRAINAGE STRUCTURE.
I/,"x?/4- BOLT 2. PRIS RACK "Y BE FTRICATED FROM WELDED
DIAMETER BARS ORC , CK HIGH DENSITY
YETHYLENE. METAL ENTS OF DEBRIS
AC
R X MUST NOT BE GALVANIZED.
METAL PLATE 3. DEBRIS RACK TO BE HINGED AS SHOWN OR
R 1/4- CONTRACTOR MAY SUBSTITUTE A COMPARABLE
DESIGN AS APPROVED BY THE ENGINEER.
4.7HE LOCATION OF THE DEBRIS RACK HOLDER
MAY BE ADJUSTED FOR VARIABLE CONDITIONS.
WHEN HDLD�R BOLT IS LOCATED ON THE METAL
PLATE DIA. IXXT LENGTH IS TO BE
SiDE VIEW OF BOLT WELDED FRONT VIEW REDUCED LG. AM WELDED TO THE PLATE.
ON TO METAL PLATE DEEMS Ro�& HOLDER AND ALL HARDWARE IS
SIDE VIEW TO BE GALVINIZED.
DETAIL FOR DEBRIS RACK HOLDER -1
z
0000000
0000000
0 Ej [I El 0 0 11
D El [10 0 110
TOP VIEW El El El 0 F-1 L1 11
0 ALLOW D El [I El 0 1111
ACCESS TO WATER QUALITY ORFICE
(SEE HOLDER DETAIL ABOVE) El El El El Q 11 [11
�TOP TO BE H14GED TO ALLOW
ACCESS TO WATER QUALITY
ORIFICE (SEE NOTE 3)
01111 110
"Uuu
DIA. BARS
IN
GALVANIZED 0011IL1000
kNOT
SEE NOTE 2
01111
[0 1-] 1-]
F] 0 F1 [3 2%" SQUARE OR
I-] E] El 11 W DIK HOLES
0 D 0 El D ISEE NOTE 2)
0 0 111111
r-O" WIN.
V-0/," MIN. HIGH 6ENSITY POLYETHYLENE
FRONT VIEW
SIDE VIEW METAL
DETAIL FOR DEBRIS RACK
(FOR WATER QUALITY ORIFICE)
SPIC,IFICA-ION
R�FFRFNr.F
STORMWATER MANAGEMENT (SWM) DETAILS
DEBRIS RACK, METAL PLATE, WATER QUALITY ORIFICE. CONCRETE CRADLE
XVI)OT
ROAD AND BRIDGE STANDARDS
REVISION DATE
SHE 2 -9
LITI
(FOR SWM DRAINAGE STRUCTURES, SWM RISER PIPES AND SWM DAMS)
7OF
-
4. 0
VIRGINIA DEPARTMENT OF TRANSPORTATION
2016 ROAD & BRIDGE STANDARDS
SWM-DR
2016 ROAD & BRIDGE STANDARDS
SWIM DAM METAL PLATE DETAIL
(NOT "VAN 7FO)
ROUND OR SQUARE
CONC. SWIA DAM 12" MAX, 6" MIN.
OPENING THROUCH
FSWM DAM.
0 a
10 BOTTOM
OF BASIN
�A1L_F`OR_M_ETAL_P_LA_TlI SIDE VIEW OF SWIM
WATER QUALITY ORIFICE DAM WITH DEBRIS
TYPICAL SWM DAM
METAL PLATE MUST BE
r" "
VED To FIT CIRCULAR
TS
,== A�UMNIWHERE APPLICABLE.
1/12 0
CONCRETE CRADLE
Dx
PIPE SIZE
INCHES
CRADLE
BOTTOM
WIDTH
(INCHES)
CRADLE
HEIGHT
(INCHES)
CRADLE
TOP WIDTH
(INCHES)
INCREMENT, IN
CUBIC YARDS,
PER LINEAR
FOOT OF PIPE
12
34
14
32
0.093
is
38
15.75
35.5
0.110
is
42
17.5
39
0.129
24
50
21
45
0.168
3C
58
26
53
0.233
36
66
31
60
0.307
1 42
1 74
1 36
1 67
1 0.3=90
CONCRETE SHALL BE CLASS A3
w BUT NOT LESS THAN 6"
)K F THE PIPE IS LAN) IN AN EXCAVATED TRENCH. THEN
THE SIDE WALLS MAY CONFORM TO THE TRENCH SHAPE
flE THE TRENCH MAY BECOME THE CRADLE FORM).
CONCRETE CRADLE IS TO BE INSTALLED UNDER THE ENTIRE
LENGTH OF CULVERT AT EACH STORMWATER MANAGEMENT BASIN.
CONCRETE CRADLE IS TO BE PAID FOR AS MISCELLANEOUS
CONCRETE AND SUMMARIZED IN CUBIC YARDS FOR EACH PIPE LOCATION
ROUND OR SQUARE
12" MAX. 6" MIN.
OPENING THROUGH WALL
C M
PZE,bRWSW.
DRAINAGE
STRUCTURE
DEBRIS
(4) '/,N4"
ADHESIVE
BOLTS.SEL
F
0 LOCKING
HEX.NUTS. BOTTOM
WATER FLAT OF BASH
DUAL Ty WAWAS
4"/ ORIFICE
> (SEE PLANS r- 1[.--METAL
FOR SIZE) PLATE
(4) Y,," DIA. _j -j- L L L _L _j _j
_0 HOLES
DETAIL FOR METAL PLATE AND SIDE VIEW WITH DEBRIS RACK
METAL PLATE DETAIL WATER QUALITY ORIFICE
(NOT CALVAMZED)
TYPICAL SWM DRAINAGE STRUCTURE
SPECIRCATION
XVEX7r STORMWATER MANAGEMENT (SWM) DETAILS REFERENCE
ROAD AND BRIDGE STANDARDS DEBRIS RACK, METAL PLATE, WATER QUALITY ORIFICE, CONCRETE CRADLE
SHE T - F 5 REVISION DAIT (FOR SWM DRAINAGE STRUCTURES SWM RISER PIPES AND SWM DAMS) 302
L
114+060 VIRGINIA DEPARTME;� OF TRANSPORTATION
2016 ROAD & BRIDGE STANDARDS
UNDERGROUND DETENTION SYSTEM STORAGE TABLE
(E)
(F)
(G)
(A)
(B)
(C)
(D)
C-13
DxE
B+F
Facility Elevations
Area of 120"
UGD System
Void Space of
Area of Stone
Storage Area in
Total UGD System
(ft)
Perforated CIVIP (sf)
Footprint (sf)
Stone
(Sf)
Stone (cf)
Storage Area (sf)
518.50
0
5,368
40%
5,368
2,147
2,147
519.00
0
5,368
40%
5,368
2,147
2,147
519.50
2,025
5,368
40%
3,343
1,337
3,362
520.00
2,751
5,368
40%
2,617
1,047
3,798
520.50
3,226
5,368
40%
2,142
857
4,083
521.00
3,551
5,368
40%
1,817
727
4,278
521.50
3,767
5,368
40%
1,601
641
4,407
522.00
3,890
5,368
40%
1,478
591
4,481
522.50
3,931
5,368
40%
1,438
575
4,506
523.00
3,890
5,368
40%
1,478
591
4,481
523.50
3,767
5,368
40%
1,601
641
4,407
524.00
3,551
5,368
40%
1,817
727
4,278
524.50
3,226
5,368
40%
2,142
857
4,083
525.00
2,751
5,368
40%
2,617
1,047
3,798
525.50
2,025
5,368
40%
3,343
1,337
3,362
526.00
0
5,368
40%
5,368
2,147
2,147
526.50
0
5,368
40%
5,368
2,147
2,147
527.00
0
5,368
40%
5,368
2,147
2,147
PROPOSEDACCE
STAIRS FOR INS
& MAI NTENAI\
WEIR PIL
D TAIL ON THI
E
STIR.
INV. OU�
530
530
PROPOSED
GRADE
S MH w/-
1. 5'
'ECTION
MIN.
CE, TYP.
j
77M
7�_
IILL±
525
__P
PR
525
IITE, SEE
3 SHEET
520
520
57, 018"'
�PROPOSED
=518.97
1515
084"
515
PROPOSED
084" PERFORATED-
-)
==T-IFFIRT
c
HA I D
-D
CMP UNDERGROUND
PIPE SURROUND
IN
DETENTION
SYSTEM Ca
DO-50%
STONE
k WRAP
ED IN
A FILTER
FABR
TYP
510
5101
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0+50 1+00 1+50
UGD SYSTEM :#:i.]
PROFILE SCALES
1"=5' (V)
1"=50' (H)
EXISTING
GRADE
-10-yr PEAK WSE=526.30
2-yr PEAK WSE=523.79
1-yr PEAK WSE-523.33
UNDERGROUND DETENTION SYSTEM GENERAL NOTES:
1 . STATE APPROVED TRASH RACKS SHALL BE INSTALLED ON ALL ORIFICES OPENINGS. SEE DETAILS ON THIS SHEET, OR
EQUIVALENT, FOR DESIGN.
2. ANY RETAINING WALLS AND FOUNDATIONS CONSTRUCTED IN THE VICINITY OF THE UNDERGROUND DETENTION SYSTEM
SHALL BE REVIEWED AND APPROVED BY THE STRUCTURAL ENGINEER AND A GEOTECHNICAL ENGINEER.
3. CONTRACTOR SHALL HIRE A THIRD PARTY GEOTECHNICAL ENGINEER TO ENSURE THE STRUCTURAL FILL & UGD
SYSTEM's STONE BACKFILL ARE STRUCTURALLY SOUND. GEOTECHNICAL ENGINEER SHALL BE PRESENT DURING THE
CONSTRUCTION OF THE FILL AREAS AND DURING THE CORE SAMPLING.
4. THE ADJACENT PUBLIC SIDEWALK & WORTH CROSSING, IN JUNCTIONS WITH THE 10' WIDE GRASS LINED GRADED
ACCESS, SHALL SERVE AS ACCESS TO THE UNDERGROUND DETENTION SYSTEM.
5. CONTACT COLLINS ENGINEERING (434.293.3719) REGARDING ANY QUESTIONS CONCERNING THE UNDERGROUND
DETENTION SYSTEM.
6. PRIOR TO CONSTRUCTION THE CONTRACTOR SHALL TEST -DIG AT THE EXISTING INLETS & OUTFALLS TO CONFIRM THE
INVERTS AND TO ENSURE THE PROPOSED GRADES CAN BE ACHIEVED. CONTRACTOR SHALL CONTACT COLLINS
ENGINEERING OF ANY DISCREPANCIES IN THE HORIZONTAL OR VERTICAL ALIGNMENT PRIOR TO ORDERING AND
CONSTRUCTION.
7. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY NTH OSHA STANDARDS FOR CONSTRUCTION
INDUSTRY (29 CFR PART 1926).
UNDERGROUND DETENTION SYSTEM (UGD) REOUIREMENTS
CONTRACTOR F-F-QUIPENMNTS:
i. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OFALLWORK COVERED UNDER THESE PLANS.
2. THE CONTRACTOR SHALL VERIFYALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANYVARIANCE FROM THE PLAN.
3. REFER TO THE APPROVED FINAL SITE PLAN FOR ANY DETAILED SITE INFORMATION.
4. ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES.
MINOR FIELD ADJUSTMENTS MAYBE NECESSARY DUE TO SITE CONDITIONS. MAJOR ADJUSTMENTS MUST BE APPROVED BY THE DESIGNER.
GENERAL CONSTRUCTIONSEQU _CENARRAT1VE
_EN
i. THE CONTRACTOR SHALL ASSEMBLE CONSTRUCTION MATERIALS ON -SITE, MAKING SURE THEY MEET DESIGN SPECIFICATIONS AND ARE PREPARED AT
STAGING AREAS WHEN POSSIBLE.
2. THE CONTRACTOR SHALL CLEAR AND STRIP THE PROJECT AREA IF REQUIRED TO THE DESIRED SUB -GRADE.
3. CONTRACTOR SHALL EXCAVATE THE TRENCH.
4. THE TRENCH FOR THE UGD SYSTEM SHALL EXTEND 2.5'BEYOND THE PIPES'SPRINGLINES.
CONTRACTOR SHALL WRAP THE EXCAVATED TRENCH WITH A 6 OUNCE FILTER FABRIC CLOTH. IN ACCORDANCE WITH AASHTO SPECIFICATION 26.5.2, A
FOUNDATION BENEATH THE TRENCH's FILTER CLOTH, PIPE AND SIDE BACKFILL SHALL BE CAPABLE OF SUPPORTING THE LOADS ACTING UPON THEM.
6. TRENCHTO INCLUDEA 6" #57STONE BED AT 95% COMPACTION BENEATHTHESTORM PIPES.
7. CONTRACTOR SHALL INSTALLTHE UGD DETENTION SYSTEM, INCLUSIVE OFTHE OUTFALLS AND ALL OFTHE ASSOCIATED STRUCTURES.
8. TRENCH SHALL BE BACKFILLED WITH #57 STONE IN 8" LIFTS AND SHALL EXTEND 12" VERTICALLY ABOVE THE CROWN OF THE PIPES.
9. THE TOP OF THE #57 STONE SHALL BE COVERED WITH A 6 OUNCE FILTER FABRIC CLOTH, OVERLAPPING THE PREVIOUSLY INSTALLED CLOTH THAT
SURROUNDS THE BOTTOM AND SIDES OF THE TRENCH.
io. SUITABLE FILL REACHINGTHE FINISHED GRADE SHALL BE APPLIED ABOVE THE TOP LAYER'S FILTER CLOTH, MEETING MINIMUM PIPE MANUFACTURER'S COVER
REQUIREMENTSTO PREVENT FLOATATION AND ENSURING PIPE INTEGRITY IS MAINTAINED. A MINIMUM COVEROFi8" IS REQUIRED ABOVE THE CROWN OF
THE DETENTION SYSTEM's PIPES.THE MINIMUM 12" OF #57 STONE ABOVE THE CROWN OFTHE PIPES CAN BE PARTOFTHE MINIMUM 18" OFCOVER.
ii. SEETHE MANUFACTURER'S SPECIFICATIONS FOR ADDITIONAL UNDERGROUND DETENTION SYSTEM REQUIREMENTS.
INSPECTIONS DURING CONSTRUCTION:
CONSTRUCTION INSPECTIONS ARE CRITICAL TO ENSURE THE UNDERGROUND DETENTION SYSTEM IS PROPERLY BUILT. BECAUSE THE TIMING OF THE
INSTALLATION IS DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER, COUNTY INSPECTOR AND
CONTECH REPRESENTATIVE PRIOR TO INSTALLATION. CONTECH, ORAN EQUIVALENT PIPE MANUFACTURER, SHALL BE CONTACTED WELL AHEAD OF THE
CONSTRUCTION START DATETO ENSUREADEQUATE LEADTIME FOR MATERIALSAND DELIVERY. MULTIPLE SITE VISITS AND INSPECTIONSARE REQUIREDTO BE
SCHEDULED BY THE CONTRACTOR, WITH THE ENGINEER, COUNTY INSPECTOR& PIPE MANUFACTURER, DURINGTHE FOLLOWING STAGES OFTHE UNDERGROUND
DETENTION SYSTEM CONSTRUCTION PROCESS:
i. PRE -CONSTRUCTION MEETING
2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS)
3. EXCAVATION/GRADING (E.G., INTERIMI ELEVATIONS).
4. WHEN THE DETENTION PIPE SUBGRADE IS READY FOR PIPE CONSTRUCTION, BUT BEFORE STONE BEDDING IS INSTALLED.
S. AFTER STONE BEDDING IS PLACED AND COMPACTED, BUT PRIOR TO PIPE INSTALLATION.
6. AT THE TIME OF THE PIPE INSTALLATION.
7. AFTER PIPE INSTALLATION, BUT PRIOR TO PLACING BACKFILL &FILL OVER THE SYSTEM.
8. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE)
PLEASE ALSO SEE BELOW, UNDER FACILITY MAINTENANCE, FOR REQUIRED INSPECTIONS AFTER INSTALLATION IS COMPLETE.
TNISPECTIONS & MATNTENANCE AFTER CONSTRUCTION:
THE FOLLOWING MAINTENANCE TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING THE INSTALLATION OF THE UNDERGROUND
DETENTION SYSTEM.
i. FOR THE FIRSTYEAR FOLLOWING CONSTRUCTION, THE SITE SHALL BE INSPECTED BYTHE CONTRACTOR QUARTERLYAND AFTER STORM EVENTS THAT
EXCEED 112 INCH OF RAINFALL.
2. THE CONTRACTOR SHALL LOOK FOR BARE OR ERODING AREAS IN THE CONTRIBUTING DRAINAGE AREA AND AROUND THE UNDERGROUND DETENTION
SYSTEM AND MAKE SURE THEY ARE IMMEDIATELY STABILIZED. CONTRACTOR SHALL SPOT RESEED AS NECESSARY AND ENSURE ADEQUATE SITE COVERAGE
IS PROVIDED WITHIN THE FIRST YEAR. ATTHE QUARTERLY INSPECTIONS, AND AFTER EACH RAINFALL EVENT IN EXCESS OF ',THE CONTRACTOR SHALL
PERFORM THEANNUAL MAINTENANCE TASKS DESCRIBED BELOW IN #3.
AFTERTHE FIRSTYEARTHE OWNER SHALL PERFORM FOLLOW-UP INSPECTIONS ANNUALLY, AND AFTER EACH SIGNIFICANT RAINFALL EVENT:
3. A SPRING MAINTENANCE INSPECTION AND CLEANUP SHALL BE CONDUCTED ANNUALLY. THE MAINTENANCE PROGRAM FOR THE UNDERGROUND DETENTION
SYSTEM SHALL INCLUDE CLEANING IT ANNUALLY OF TRASH, DEBRIS & SEDIMENT AND ENSURING THE INTEGRITY OF THE TRASH RACKS AND OUTFALL &
INFLOW PIPES. THE OWNER SHALL ENSURE THE SYSTEM IS OPERATING AS INTENDED AND IS NOT CLOGGED OR DAMAGED. THE OWNER SHALL IMMEDIATELY
CLEAN & REPAIR THE FACILITY AS NECESSARY AND SHALL PAY SPECIAL ATTENTION TO THE INLET AND OUTLET LOCATIONS. THE ACCESS MANHOLES SHALL
BE USED FOR INSPECTION AND MAINTENANCE.
UNDERGROUND DETENTION SYSTEM #1 DETAIL: SCALE 1"=20'
CONTRACTOR SHALL CALL THE COUNTY INSPECTOR &
ENGINEERING DEPARTMENT 24-HOURS BEFORE ANY ANTICIPATED
CONSTRUCTION ACTIVITIES FOR THE UNDERGROUND DETENTION
SYSTEM. THIS IS INCLUSIVE OFWHENTHE UNDERGROUND
DETENTION SYSTEM SUBGRADE IS READY FOR PIPE
CONSTRUCTION, BUT BEFORE STONE BEDDING IS INSTALLED.
PROPERTY -
LIMITS, TYR. 084" INV. 519.51' 47.5' OF 084" . . . . . . . . . . . 84" INV. 519,55'
0
CMP (D 0.50%
519.46' 084" INV. 519,60'
0814" INV.
�IIV519 65
erA
rLj/��
2��'W A'-7
)V
)-W'
084" INV. 519.41'\
I
PROPOSED ACCESS MH w/ STAIRS FOR
4
D
qANCE TYP
INSPECTION & MAINTEI 1
C
C7
C
�6
LA
SEE THIS SHEET FOR SCALE -
PROFILE OF THE ALIGNMEN�_
PROPOSED . 084" PJFOR�T�D'CMP
UNDERGROUND DETENTION
J�
SYSTEM SURROUNDED IN STONE &
WRAPPED IN A FILTER FABRIC, TYP..
10
I�
(9' ID,
(9
024" INV. 519.53'
084" INV. 519.53-
TH SWIM ESMT.
Tp� Tk
d
084" INV. 519.12'
3; 084" INV. 519.07'
ul
�_j 084" INV. 519.02'
PROPOSED STIR. 41, ELEVATED 015"
HDPE EMERGENCY OVERFLOW
BYPASS TO CONVEY MORE SEVERE,
LESS COMMON STORM EVENTS.
WEIR PLATIE
FNV 519 00'
AW
- - -
PROPOSED STIR. 37, LOWER 018" HDPE
PRIMARY OUTFALL TO CONVEY LES
RIGHT017�WAY,_,
Y I AL.., ........
Vv.
SEVERE, MORE COMMON STORM EVENTS. 58
UGE UGE UGE
UGE UGE UGE
#57
STOr,
BACKIF
COMPA(
#57 ST(
BEDDI
6" M11
NOTE:
WEIR PLATE TO BE SECURELY
BOLTED, OR SIMILARLY FASTENED,
TO THE DETENTION SYSTEM.
�_PROPDSED16WIDE, GRASS LINEDGRADED
ACCESS FROM PUBLIC ROADWAY& SIDEWALK
GRAPHIC SCALE
20 0 10 20 40
I I I I I
IN FEET
1 inch 20 ft.
6OUNCE
NON -WOVEN FILTER
FABRIC TO OVERLAP
A MINIMUM OF
+ TRENCH WIDTH
UGD TRENCH DETAIL
NTS
084" WEIR PLATE DETAIL
(UNDERGROUND DETENTION SYSTEM)
SCALE:i"=5'
MANUFACTURE/ INSTALL ONE (2) 012" HIGH-FLO
ORIFICE IN THE STEEL WEIR PLATE AT THE TOP OF
THE WEIR PLATE (INVERT ELEVATION=525.00') ELEV.=S26.00'
MANUFACTURE/ INSTALL THREE (3) 022"' (TOP OF PIPE)
MID -FLOW ORIFICES IN THE STEEL WEIR ELEV.=525.00'
PLATE (INVERT ELEVATIONS=523-33')
INSTALL TRASH RACKS ON ALL
ORIFICES, TYP. SEE THIS SHEET FOR REINFORCED 12 GA.
THE WEIR PLATE's TRASHRACK STEEL PLATE
DETAILS, OR EQUIVALENT.
ELEV.=S1q.oQ'
(BOTTOM OF F
MANUFACTURE INSTALL ONE (1) 05- 3'LOW-FLOW
ORIFICE IN THE STEEL WEIR PLATE AT THE LOW POINT OF
THE DETENTION SYSTEM (INVERT ELEVATION= 529.00')
SCOTT/R. Cn�LLINSZ
Lic. No. 035791 11,
10/25/22
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JOB NO.
202199
SCALE
ASSHOWN
SHEET NO.
12
PLAN
FRONT
48"0 to 90"0 FITTING REINFORCEMENT
MAY 13E REQUIRED BASED ON HEIGHT OF
COVER AND LIVE LOAD CONDITION
TYPICAL MANWAY DETAIL
NOT TO SCALE
HUGGER
FLAT GASKET
SINGLE BAR, BAND
BOLT AND STRAP (SBBS)
FLAT GASKET
CONNECTION DETAIL
(SBBS)
-ROLLED END HEL-COR PIPE
2 2/3"x1/2" RE
GENERAL NOTES:
1. JOINT IS TO BE ASSEMBLED PER AASHTO BRIDGE CONSTRUCTION SPECIFICATION SEC 26.4.2.4.
2. BAND MATERIALS AND/OR COATING CAN VARY BY LOCATION. CONTACT YOUR CONTECH REPRESENTATIVE FOR AVAILABILITY.
3. BANDS ARE SHAPED TO MATCH THE PIPE -ARCH WHEN APPLICABLE.
4� BANDS ARE NORMALLY FURNISHED AS FOLLOWS:
12" THRU 48" 1 -PIECE
54"THRU 96" 2-PIECES
102" THRU 144" 3-PIECES
BAND FASTENERS ARE ATTACHED WITH SPOT WELDS, RIVETS OR HAND WELDS.
5.
6. ALL CMP IS REROLLED TO HAVE ANNULAR END CORRUGATIONS OF 2 213"xl/2"
7. DIMENSIONS ARE SUBJECT TO MANUFACTURING TOLERANCES.
TION, IF REQUIRED (SEE DETAILS ABOVE).
8. ORDER SHALL DESIGNATE GASKET OP
H-12 HUGGER BAND DETAIL
NOT TO SCALE
20 MIL PE
IMPERMEABLE
LINER OVER
TOP OF PIPE LIMITS OF
(IF REQUIRED) REQUIRED
BACKFILL
T84" TyP. 30" TYP. ;Y30" SEE TYPICAL
BACKFILL DETAIL
NOTES
TYPICAL SECTION VIEW
NOT TO SCALE
NOTE: IF SALTING AGENTS FOR SNOW AND ICE REMOVAL ARE USED ON OR NEAR THE
PROJECT, A GEOMEMBRANE BARRIER IS RECOMMENDED WITH THE SYSTEM. THE
GEOMEMBRANE LINER IS INTENDED TO HELP PROTECT THE SYSTEM FROM THE
POTENTIAL ADVERSE EFFECTS THAT MAY RESULT FROM A CHANGE IN THE
SURROUNDING ENVIRONMENT OVER A PERIOD OF TIME. PLEASE REFER TO THE
CORRUGATED METAL PIPE DETENTION DESIGN GUIDE FOR ADDITIONAL INFORMATION.
TRENCH CONDITION EMBANKMENT CONDITI,
3�
..... .. . F,�
-FINAL BACKFILL
DIAMETER
MIN
COVER
CORR.
PROFILE
611-10"
12"
1 1/2" x 1/4"
1211,4811
12"
2 213"x 1/2"
54"-96"
12"
3"x 1", 5" x 1"
102"-144"
D/8
3' x 1', 5" x 1
INITIAL FILL ENVELOPE
BACKFILL REQUIREMENTS FOLLOW THE GUIDELINES OF AASHTO LRFD BRIDGE DESIGN (SEC 12) AND CONSTRUCTION (SEC 26)
1 MINIMUM TRENCHWIDTH MUSTALLOWROOM FOR PROPER COMPACT10N OF HAUNCH MATERIALS UNDER THE PIPE.
THE MINIMUM TRENCH WIDTH (12.6.6.1):
PIPE!512": D + 16"
PIPE > 12": 1.5D + 12"
la MINIMUM EMBANKMENT WIDTH (IN FEET) FOR INITIAL FILL ENVELOPE (12.6.6.2):
PIPE < 24": 3.OD
PIPE 24"- 144': D + 4'0"
PIPE > 144": D + 10'0"
2 THE FOUNDATION UNDER THE PIPE AND SIDE BACKFILL SHALL BE ADEQUATE TO SUPPORT THE LOADS ACTING UPON IT (26.5.2).
3 BEDDING MATERIAL SHALL BE A RELATIVELY LOOSE MATERIAL THAT IS ROUGHLY SHAPED TO FIT THE BOTTOM OF THE PIPE, AND A
MINIMUM OF TWICE THE CORRUGATION DEPTH IN THICKNESS, WITH THE MAXIMUM PARTICLE SIZE OF ONE-HALF OF THE CORRUGATION
DEPTH (26.3.8.1, 26.5.3).
4 CORRUGATED STEEL PIPE (CSP / HEL-COR).
5 HAUNCH ZONE MATERIAL SHALL BE HAND SHOVELED OR SHOVEL SLICED INTO PLACE TO ALLOW FOR PROPER COMPACTION (26.5.4).
5a INITIAL BACKFILL FOR PIPE EMBEDMENT TO MEET AASHTO A-1, A-2 OR A-3 CLASSIFICATION, OR APPROVED EQUAL, COMPACTED TO 90%
STANDARD PROCTOR (T 99). MAXIMUM PARTICLE SIZE NOT TO EXCEED W (12.4.1.2). ALL LIFTS PLACED IN A CONTROLLED MANNER. IT IS
RECOMMENDED THAT LIFTS NOT EXCEED AN 8"UNCOMPACTED LIFT HEIGHT TO PREVENT UNEVEN LOADING, AND THE LESSER OF 1/3
THE DIAMETER OR 24"AS THE MAXIMUM DIFFERENTIAL SIDE -TO -SIDE (26.5.4).
6 INITIAL BACKFILL ABOVE PIPE MAY INCLUDE ROAD BASE MATERIAL (AND RIGID PAVEMENT IF APPLICABLE). SEE TABLE ABOVE.
6a TOTAL HEIGHT OF COMPACTED COVER FOR CONVENTIONAL HIGHWAY LOADS IS MEASURED FROM TOP OF PIPE TO BOTTOM OF
FLEXIBLE PAVEMENT OR TOP OF RIGID PAVEMENT (12.6.6.3).
7 FINAL BACKFILL MATERIAL SELECTION AND COMPACTION REQUIREMENTS SHALL FOLLOW THE PROJECT PLANS AND SPECIFICATIONS
PER THE ENGINEER OF RECORD (26.5.4.1).
NOTES:
• GEOTEXTILE SHOULD BE CONSIDERED FOR USE TO PREVENT SOIL MIGRATION INTO VARYING SOIL TYPES (PROJECT ENGINEER).
• FOR MULTIPLE BARREL INSTALLATIONS THE RECOMMENDED STANDARD SPACING BETWEEN PARALLEL PIPE RUNS SHALL BE PIPE DIA./2
BUT NO LESS THAN 12', OR 36' FOR PIPE DIAMETERS 72" AND LARGER.
• CONTACT YOUR CONTECH REPRESENTATIVE FOR NONSTANDARD SPACING (TABLE C12.6.7-1).
TYPICAL BACKFILL DETAIL
NOT TO SCALE
TEMPORARY COVER FOR
CONSTRUCTION LOADS
HEIGHT OF
COVER
CONSTRUCTION LOADS
FINISHED
GRADE
FOR TEMPORARY CONSTRUCTION VEHICLE LOADS. AN EXTRA AMOUNT OF COMPACTED COVER MAY BE REQUIRED OVER
THE TOP OF THE PIPE. THE HEIGHT -OF -COVER SHALL MEET THE MINIMUM REQUIREMENTS SHOWN IN THE TABLE BELOW.
THE USE OF HEAVY CONSTRUCTION EQUIPMENT NECESSITATES GREATER PROTECTION FOR THE PIPE THAN FINISHED
GRADE COVER MINIMUMS FOR NORMAL HIGHWAY TRAFFIC.
AXLE LOADS
PIPE SPAN,
INCHES
(kips)
18-50 1 50-75 1 75-110 1 110-150
MINIMUM COVER (FT)
2.0
2.6
3.0
3.0
12-42
48-72
3.0
3.0
3.5
4�O
78-120
3.0
3.5
4.0
4.0
126-144
3.5
4.0
4.5
4.5 -
'MINIMUM COVER MAY VARY, DEPENDING ON LOCAL CONDITIONS. THE CONTRACTOR MUST PROVIDE THE ADDITIONAL
COVER REQUIRED TO AVOID DAMAGE TO THE PIPE. MINIMUM COVER IS MEASURED FROM THE TOP OF THE PIPE TO
THE TOP OF THE MAINTAINED CONSTRUCTION ROADWAY SURFACE.
CONSTRUCTION LOADING DIAGRAM
NOT TO SCALE
SPECIFICATION FOR CORRUGATED STEEL PIPE -ALUMINIZED TYPE 2 STEEL
SCOPE HANDLING AND ASSEMBLY
A
36"0 MAX., HS-25 ACCESS CASTING
WITH GRADE RINGS AS REQUIRED, TO
BE PROVIDED AND INSTALLED BY
CONTRACTOR. MAY BE TOP MOUNTED
CMP (AS SHOWN) OR RECESSED.
PROTECTION w
RIM/FINISHED > c�
O�
SLAB GRADE VARIES
EO �_k
4
I 1
1
T
GASKET MATERIAL 0 CMP RISER
<
SUFFICIENT TO PREVENT -AEE 9 0- . a
SLAB FROM BEARING ON tw
- _0
RISER TO BE PROVIDED BY V5
CONTRACTOR. -013- 1 v TyP.
SECTION VIEW
F4t-CESS CASTING NOT SUPPLIED BY CONTECH]
A
#4 DIAGONAL TRIMA --T- 1
BAR (TYP. 4 P
A
SEEC
No
OPENING IN
r116
IN
PROTECI
SLAB FOR
ACCESS
THIS SPECIFICATION COVERS THE MANUFACTURE AND
SHALL BE IN ACCORDANCE WITH RECOMMENDATIONS OF THE
INSTALLATION OF THE CORRUGATED STEEL PIPE (CSP) DETAILED IN
NATIONAL CORRUGATED STEEL PIPE ASSOCIATION (NCSPA)
THE PROJECT PLANS.
INSTALLATION
MATERIAL
SHALL BE IN ACCORDANCE WITH AASHTO STANDARD
THEALUMINIZED TYPE 2 STEEL COILS SHALL CONFORM TO THE
SPECIFICATIONS FOR HIGHWAY BRIDGES, SECTION 26, DIVISION 11
APPLICABLE REQUIREMENTS OF AASH[TO MZ74 ORASTM A929.
OR ASTM A798 AND IN CONFORMANCE WITH THE PROJECT PLANS
AND SPECIFICATIONS. IF THERE ARE ANY INCONSISTENCIES OR
PIPE
CONFLICTS THE CONTRACTOR SHOULD DISCUSS AND RESOLVE
WITH THE SITE ENGINEER.
THE CSP SHALL BE MANUFACTURED IN ACCORDANCE WITH THE
APPLICABLE REQUIREMENTS OF AASHTO M36 OR ASTM A760. THE
IT IS ALWAYS THE RESPONSIBILITY OF THE CONTRACTOR TO
PIPE SIZES, GAGES AND CORRUGATIONS SHALL BE AS SHOWN ON
FOLLOW OSHA GUIDELINES FOR SAFE PRACTICES.
THE PROJECT PLANS.
ALL FABRICATION OF THE PRODUCT SHALL OCCUR WITHIN THE
UNITED STATES.
MATERIAL SPECIFICATION
NOT TO SCALE
y2"
2,
(#6) REBAR CAN BE CUT FLUSH ALL STEEL PER
TO OUTSIDE OF RAIL ASTM A36
(L
(BAR LENGTH = 16Y4") OR BAR CAN
EXTEND BEYOND RAIL Y2"± FABRICATION TOLERANCE::tY4"
FLAT BAR AND REBAR: MILL
p 3/8
PPLIES
TY
>
12" TYP.
C HOLE wl %" REBAR RUNG,
CENTER TO CENTER WELD REBAR TO RUNG ON
S
RUNG SPACING OUTSIDE OF STEEL RAIL
0
- Z142" x FLAT BAR SIDE RAIL
PLAN SIDE
NOTES:
1. LADDERS CAN BE MADE IN 20'-0" STANDARD LENGTHS AND CUT TO FIT
2. ALL MATERIAL TO MEET ASTM A36
3. LADDER TO BE HOT DIPPED GALVANIZED PER ASTM A-123 AFTER
FABRICATION IS COMPLETE
STANDARD LADDER DETAIL
NOT TO SCALE
PART NO. HALAGVL 16
'ED PER AsTm A-123 A/FTER
ER DETAIL
L E
GVL 1 6
PROVIDE MINIMUM OF 4 ATTACHMENT
ANGLES (2 ON EITHER SIDE OF LADDER RAIL)
TO CONNECT LADDER TO RISER EXTENSION
RISER w/ LADDER AND STEPS
IF EXTENSION IS REQUIRED
INTERRUPTED 13AR
REPLACEMENT, SEE
NOTE 6.
RISER w/ LADDER
AND STEPS
MAINLINE CMP
22/3 x Y2,5 x 1, 3 x 1, ETC.
NOTE:
THIS DRAWING IS INTENDED TO APPLY TO LADDERS
INSTALLED IN RISERS HAVING A DIAMETER OF 30" OR
LARGER. DUE TO SPACE CONSTRAINTS AND LIMITED
ACCESSIBILITY, THE PRACTICALITY AND SUITABILITY OF
UTILIZING RISERS SMALLER THAN 30" DIAMETER
AND/OR INCORPORATING LADDERS IN THESE SMALLER
DIAMETER RISERS SHOULD BE ADDRESSED BY THE
OWNER AND PROJECT ENGINEER
V-6"
MAX.
9
04 DIAGONAL TRIM
BAR (TYP. 4 PLACES), -
SEE NOTE 7.
ell (TYP) 7�
L---
REINFORCING TABLE
"BEARING
0 CMID
A
B 0
REINFORCING
PRESSURE
RISER
(PSF)
24"
4'0
26"
#5 @ 10" OCIEW
2,540
4'x4'
#5 @ 10- OCIEW
1,900
301,
4'-6"0
32"
#5 @ 10" OCEW
2,260
4--6"x4'-6"
#5 @ 9- OCEW
1,670
36"
wo
38'
#5 @ 9- OCEW
2.060
Vx 5'
#5 @ 8- OCEW
1,500
42"
6-6"0
44"
#5 @ 8- OCEW
1.490
6-6" x 6-6"
#5 @ 8' OCEW
1,370
6'0
50"
#5 @ 7- OCIEW
1,210
6'x 6'
#5 @ 7- OCIEW
1,270
OPENING IN I
PROTECTION
:tI=t ===At==;z=1t===_ SLAB FOR i..
I I /I I
I ACESS 1
1
1
STANDARD STANDARD
REINFORCING, REINFORCING,
SEE TABLE SEE TABLE
ROUND OPTION PLAN VIEW
NOTES:
1. DESIGN IN ACCORDANCE WITH AASHTO, 17th
EDITION AND ACI 350.
2. DESIGN LOAD HS25.
3. EARTH COVER = VMAX.
4. CONCRETE STRENGTH = 4,000 psi
5. REINFORCING STEEL = ASTM A615, GRADE 60.
6. PROVIDE ADDITIONAL REINFORCING AROUND
OPENINGS EQUAL TO THE BARS INTERRUPTED,
HALF EACH SIDE. ADDITIONAL BARS TO BE IN THE
SAME PLANE.
*NOTE: WHEN RISER EXTENSIONS
ARE USED, THE PLANT SHOULD
CUT 3" FROM THE SIDE RAILS AS
SHOWN
*3" FROM BOTTOM OF LADDER
RAIL TO RISER JOINT
*3" FROM TOP OF LADDER
RAIL TO RISER JOINT
LADDER RAILS AND RUNGS
(2) Y4" FILLET WELDS 1 LONG
ATTACHMENT AN(
L5" x 3.1 x Y4" x 16" LONG AT V-0"
MINIMUM OF 4 ANGLES F
SPACING. LONG LEG TO
LADDER SECTION, (2 EACH SIDE
PROJECT OUT WELD TOP
LADDER) 6' MAX. SPACI
AND BOTTOM OF 3" LEG TO EACH
VERTICAI
CORRUGATION CREST
(THESE ANGLES SHOULD BE USED
FOR LARGER DIAMETER
MAINLINES WHERE ADDITIONAL
STEPS ARE NEEDED)
6" FROM RUNG TO
RISER JOINT
6" FROM RUNG TO
RISER JOINT
SECTION A -A
RISER LADDER DETAIL
NOT TO SCALE
RISER NORMALLY CMP
WITH 2%" x)/2"
CORRUGATIONS
(4) Y16" FILLET WELDS
FROM EACH ANGLE TO
CORRUGATION CREST
(2 WELD EACH SIDE)
L3 x 3 x Y16"
5Y2" LONG
INTERRUPTED BAR
REPLACEMENT,
SEE NOTE 6.
SQUARE OPTION PLAN VIEW
7. TRIM OPENING WITH DIAGONAL #4 BARS, EXTEND BARS A
MINIMUM OF 12"BEYOND OPENING. BEND BARS AS REQUIRED
TO MAINTAIN BAR COVER.
8. PROTECTION SLAB AND ALL MATERIALS TO BE PROVIDED AND
INSTALLED BY CONTRACTOR-
9. DETAIL DESIGN BY DELTA ENGINEERS, ARCHITECTS AND LAND
SURVEYORS, ENDWELL, NY.
MANHOLE CAP DETAIL
NOT TO SCALE
(4) Y16" FILLET WELDS FROM
EACH ANGLE CORRUGA:
CREST (2 WELDS EACH cl
(4)/3"x3"xYj6"
5Y2- LONG
(2) Y4" FILLET WELDE
1" LONG FROM EACH ANGLE
TO LADDER RAIL
LADDER RAILS
PLAN
- -- - -- -
- -- - -- -
�A
A
(4) Y16" FILLET WELDS
FROM EACH ANGLE TO
CORRUGATION CREST
(2 WELDS EACH SIDE)
L3" x 3" x 3/16"
5Y2" LONG
ELEVATION
LADDER
AND RUI
SCOTT/R. CZ�LLINS��
Lie. No. 035791,��
10/25/22
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