HomeMy WebLinkAboutSDP201100032 Letter of Revision Letter of Revision 1 2012-09-12 ALN., .....
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COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road,North Wing
Charlottesville,Virginia 22902-4596
Phone(434)296-5832 Fax(434)972-4126
September 12, 2012
Frank V. Pohl, P.E.
1603 Kenwood Lane
Charlottesville, VA 22901
Dear Mr. Pohl,
This letter approves your submitted Letter of Revision for the above referenced site plan. The letter of revision
proposes the following changes:
1. Eliminate the oil/water separator and associated piping and canopy-pad inlets from the project. This
request is being made because the oil/water separator is not required by any State or Federal law as
confirmed with the Virginia Department of Environmental Quality (refer to attached email dated August 14,
2012).
2. As a result of eliminating the oil/water separator, adjust post-development drainage areas. Spot
elevations were revised to have positive flow off of the canopy pad. A revised WPO application has been
submitted with this Letter of Revision.
3. Eliminate"dog-house" stormwater manhole 103 and reroute drainage pipe from STR 107 to the existing
manhole EX2. This was done to simplify the construction and save costs. A revised WPO application has
been submitted with this Letter of Revision to address this change.
4. Raise the finished floor elevation of the building by 4-inches to provide a minimum 1.5% slope in the front
drive lane.
5. Revise the size of Filterra Unit FT-1 to be a 8'x4' unit. The size was mislabeled in the Filterra Schedule
and Filterra documentation is submitted to show the 8'x4' unit will allow up to 0.22 acres in contributing
drainage area, which is what is draining to the unit.
Engineering and inspections both reviewed the proposed changes and each had no objection. The associated
WPO application (WPO 201200077) has also been approved by engineering.
This is the first (1st) Letter of Revision for this site. Three (3) Letters of Revision are allowed, after which all
required changes must submitted in the form of a site plan amendment.
Sincerely,
Ellie Carter Ray, PLA, ASLA
Senior Planner
County of Albemarle
Department of Community Development
401 McIntire Road
Charlottesville, VA 22902-4596
Phone: (434)296-5832 Ext 3432
Attachments: Letter of Request
Site Plan Change
°OHL CONSULTING, LLC
August 27,2012
Ellie Ray,CLA,Senior Planner
County of Albemarle
Division of Zoning and Current Development
401 McIntire Road
North Wing
Charlottesville,VA 22902
RE: Greenbrier 7-Eleven(SDP 2011-00032)
Letter of Revision#1
Dear Ms. Ray:
Attached please find the following documents in support of a request for a Letter of Revision for the
referenced project.
1. Letter or Revision application and $100 fee.
2. Application for Review of E&SC Plan and SWM/BMP Plan amendment and associated fee in the
amount of$360.
3. 6 copies of the revised drawings(4 copies are for the LOR application and 2 copies are for the
E&SC/WPO application). Note that not all drawings have been submitted,just the ones that
have been revised.
This Letter of Revision is being submitted for the following changes to the approved site development
plan:
1. Eliminate the oil/water separator and associated piping and canopy-pad inlets from the project.
This request is being made because the oil/water separator is not required by any State or
Federal law as confirmed with the Virginia Department of Environmental Quality(refer to
attached email dated August 14, 2012).
2. As a result of eliminating the oil/water separator,adjust post-development drainage areas.Spot
elevations were revised to have positive flow off of the canopy pad.A revised WPO application
has been submitted with this Letter of Revision.
3. Eliminate"dog-house" stormwater manhole 103 and reroute drainage pipe from STR 107 to the
existing manhole EX2.This was done to simplify the construction and save costs.A revised WPO
application has been submitted with this Letter of Revision to address this change.
1
1603 KENWOOD LANE
CHARLOTTESVILLE,VA 22901
t= T:434-466-7458
F:434-295-6528
1 EMAIL:FRANK@POHLCONSULTINGLLC.COM
I
NIlir GREENBRIER 7-ELEVEN
REVIEW COMMENT RFSPONSFS
Page 2 of 2
4. Raise the finished floor elevation of the building by 4-inches to provide a minimum 1.5%slope in
the front drive lane.
5. Revise the size of Filterra Unit FT-1 to be a 8'x4' unit.The size was mislabeled in the Filterra
Schedule and Filterra documentation is submitted to show the 8'x4' unit will allow up to 0.22
acres in contributing drainage area, which is what is draining to the unit.
If you have any questions or comments, please do not hesitate to let me know.
Sincerely,
4.41,:),40e
Frank V. Pohl, P.E.
Pohl Consulting, LLC
GENERAL NOTES
0 WNER/DEVEL OPER:
GREENBRIER REAL PROPERTY LLC
200 CARL TON ROAD
CHARLOTTESVILLE, VIRGINIA 22902
(434) 293-6157 (PHONE)
(434) 293-3701 (FAX)
CONTACT- DAVID SUTTON (SUTTOND@TIGERFUEL.COM)
ENGINEER:
POHL CONSULTING, LLC
1603 KENWOOD LANE
CHARLOTTESVILLE, VIRGINIA 22901
(434) 466— 7458
CONTACT FRANK V. POHL, P.E. (FRANK®POHLCONSUL TINGLLC. COM)
TAX PARCEL #• 61W -02—B-3 WESTFIELD SUBDIVISION (D.B. 2686 PG. 247)
PROPERTY ADDRESS: 1245 SEMINOLE TRAIL
CHARLOTTESVILLE, VA 22902
ZONING: C-1 (COMMERCIAL)
USE. EXISTING GASOLINE/SERVICE STATION W/CONVENIENCE STORE AND CAR WASH AND EXISTING JIFFY LUBE
TOTAL ACREAGE: 1.146 ACRES
d D — 0 D I
hk4 *C!] I ik y 14 AkIV91 V4 4 %:1
LETTER OF REVISION #1 FOR SDP -201100032
PROPOSED USE. GASOLINE/SERVICE STATION W/CONVENIENCE STORE AND CAR WASH AND JIFFY LUBE, REFER TO AREA TABLE BELOW.
MAGISTERIAL DISTRICT- RIO DISTRICT
COMPREHENSIVE PLAN AREA AND LAND USE: OFFICE / R&D / FLEX / LIGHT INDUSTRIAL IN NEIGHBORHOOD 2
ENTRANCE CORRIDOR: PARCEL lS LOCATED WITHIN AN ENTRANCE CORRIDOR OVERLAY WHICH REQUIRES ARCHITECTURAL REVIEW BOARD
APPROVAL.
SETBACKS: BUILDING = 30 FT (FRONTING SR 29 AND GREENBRIER DRIVE)
BUILDING = 0 FT (NORTH AND EAST SIDES OF SITE)
PARKING = 10 FT (FRONTING SR 29 AND GREENBRIER DRIVE)
MAXIMUM HEIGHT- BUILDING = 35 FT
CANOPY = 18 FT
MAXIMUM BUILDING AREAS. CONVENIENCE STORE = J,050 SF
CAR WASH AND MECH. SPACE = 1,050 SF
FUELING CANOPY = J,000 SF
JIFFY LUBE (NO CHANGE) = 2,024 SF
MAXIMUM PAVED PARKING AND VEHICULAR CIRCULATION AREAS = J2,000 SF.
MAXIMUM NUMBER OF CONVENIENCE STORE EMPLOYEES = 2 EMPLOYEES.
MAXIMUM NUMBER OF JIFFY LUBE EMPL 0 YEES = 5 EMPL 0 YEES
DRAINAGE DISTRICT PARCEL IS LOCATED IN THE MEADOW CREEK WATERSHED.
JURISDICTIONAL AREA: PARCEL IS LOCATED IN THE WATER AND SEWER JURISDICTIONAL AREA.
SURVEY: BOUNDARY, TOPOGRAPHIC AND GROUND SURVEY BY LINCOLN SURVEYING DATED MAY 28, 2010.
— NA VD '88 VERTICAL DATUM (CONTROL POINTS AS INDICATED ON EXISTING CONDITIONS AND DEMOLITION PLAN)
FLOOD PLAIN: THIS PROPERTY LIES 1N AN AREA DESIGNATED AS ZONE X (AREAS DETERMINED TO BE OUTSIDE THE 0.27 ANNUAL CHANCE
FLOODPLAIN) AS SHOWN ON MAPS BY FEDERAL EMERGENCY MANAGEMENT AGENCY.
CONTRACTOR SHALL VERIFY LOCATION AND ELEVATION OF ALL UNDERGROUND UTILITIES WITHIN LIMITS OF WORK PRIOR TO STARTING WORK.
CONTACT ENGINEER IMMEDIA TEL Y IF LOCATION OR ELEVATION IS DIFFERENT FROM THAT SHOWN ON PLANS, IF THERE APPEARS TO BE A
CONFLICT OR UPON DISCOVERY OF ANY UTILITY NOT SHOWN ON THE PLANS
EXISTING DUMPSTER SHALL REMAIN TO BE USED BY BOTH THE CONVENIENCE STORE AND JIFFY LUBE.
OUTDOOR LIGHTING. A PHOTOMETRIC PLAN HAS BEEN PROVIDED WITH THIS APPLICATION. EXIISTING LIGHT POLES SHALL REMAIN WHERE
OUTSIDE LIMITS OF CONSTRUCTION.
CRITICAL SLOPES: THERE ARE LIMITED MAN—MADE CRITICAL SLOPES ON THIS PROJECT (1,16:3 SF) AS SHOWN ON THE EXISTING SURVEY. A
CRITICAL SLOPE WAIVER HAS BEEN SUBMITTED TO THE COUNTY FOR REVIEW AND APPROVAL.
PARKING SCHEDULE-
CHEDULEUSE
USE
CODE REQUIREMENT
REQUIRED
PROVIDED
SERVICE/CONVENIENE STORE
1 PER 200 GSF
3, 029 GSF = 16 SPACES
33 SPACES (SEE LAYOUT PLAN
FOR LOCA TIONS)
1 PER EMPLOYEE
2 EMPLOYEES = 2 SPACES
CAR WASH (SELF SERINE)
2 PER STALL
1 STALL = 2 SPACES
JIFFY LUBE
1 PER EMPLOYEE
5 EMPLOYEES = 5 SPACES
2 PER STALL
4 STALLS = 8 SPACES
TOTAL
434.
33 SPACES
{GREENBRIER REDEVELOPMENT
EXISTING/PRO POSED USES AN D AREAS
PROPOSED
USE EXISTING
COMMENTS
AREA. (SF) INCREASE/AREA ISF,I* RETAIL CAR WASH Exterior" %(DECREASE) (SF)
CONVENT ENCE STORE
Sheet Index
DATE:
05116111
DRAWN BY
Sheet Number
Sheet Title
PILI
PEAK HOUR
09120111
C-1
Retail/Public
1,238
29%
1,672
C-2
EXISTING CONDITIONS AND DEMOLITION PLAN
IN
OUT
TOTAL
434.
LAYOUT PLAN
Back m/Mech,IStorage
682
6%
1,357
GRADING AND UTILITY PLAN
LOR
-
33%
C-5
675
LOR
€tech Yard
— REVISED
01%
-
-
Stati onFae
/Conve hence Store
2.21
WX
dOTES-AND BET—""l`'
1,834
LOR
Car Wash and Mech Space
2,329
55%
-
1,037
— REVISED
-
261
LOR
(1.,292).
— REVISED
TOTAL 1
4,249 1
100%
1 3,029
1,037
1
221
1 100%
1
(183)1
INET REC UCTIO N IN a3 ILDIN AREAS
.IIIFFYLUE BUILDING 2,024 2,024 �_ 01 NO CHANGE
All existing building areas are under roof,
Open areas that are not under roof do not count toward the proposed building area.
MINOR SITE PLAN AMENDMENT
RIO DISTRICT
ALBEMARLE, VIRGINIA
MAY 9, 2011
Albemarle ount a�` Map:
Scale
��
4 250 550 Fr10
� �
�Ee� Greenbrier Office Park X61 WO
;Vo!e Tf�is,naF is for display putpaes oniy
C �1 and maws parcels as of 12/37!2009.
\ See Map Hoek Introduction for audiuol dcfails.
VICINITY MAP
MS -19 STATEMENT
1. EXISTING TOTAL SITE IMPERVIOUS AREA IS 42,240 SF AND THE PROPOSED TOTAL SITE IMPERVIOUS IS
39,790 SF, THEREFORE ADEQUATE CHANNEL ANALYSIS IS NOT REQUIRED FOR THIS PROJECT.
GENERAL CONSTRUCTION NOTES FOR SITE PLANS
1. PRIOR TO ANY CONSTRUCTION WITHIN ANY EXISTING PUBLIC RIGHT—OF—WAY, INCLUDING CONNECTION TO ANY
EXISTING ROAD, A PERMIT SHALL BE OBTAINED FROM THE VIRGINIA DEPARTMENT OF TRANSPORTATION
(VDOT). THIS PLAN AS DRAWN MAY NOT ACCURA TEL Y REFLECT THE REQUIREMENTS OF THE PERMIT. WHERE
ANY DISCREPANCIES OCCUR THE REQUIREMENTS OF THE PERMIT SHALL GOVERN.
2. ALL PAVING, DRAINAGE RELATED MATERIALS AND CONSTRUCTION METHODS SHALL CONFORM TO CURRENT
SPECIFICATIONS AND STANDARDS OF VDOT UNLESS OTHERWISE NOTED.
J. EROSION AND SIL TA TION CONTROL MEASURES SHALL BE PROVIDED IN ACCORDANCE WITH THE APPROVED
EROSION CONTROL PLAN AND SHALL BE INSTALLED PRIOR TO ANY CLEARING, GRADING OR OTHER
CONSTRUCTION.
4. ALL SLOPES AND DISTURBED AREAS ARE TO BE FERTILIZED, SEEDED AND MULCHED. THE MAXIMUM
ALLOWABLE SLOPE IS 2: 1 (HORIZONTAL: VERTICAL). WHERE REASONABLY OBTAINABLE, LESSER SLOPES OF 3: 1
OR BETTER ARE TO BE ACHIEVED.
5. PAVED, RIP—RAP OR STABILIZATION MAT LINED DITCH MAY BE REQUIRED WHEN IN THE OPINION OF THE
ALBEMARLE COUNTY DIRECTOR OF ENGINEERING, OR THE DIRECTOR'S DESIGNEE, IT IS DEEMED NECESSARY IN
ORDER TO STABILIZE A DRAINAGE CHANNEL.
6. ALL TRAFFIC CONTROL SIGNS SHALL CONFORM WITH THE VIRGINIA MANUAL FOR UNIFORM TRAFFIC CONTROL
DEVICES
7. UNLESS OTHERWISE NOTED ALL CONCRETE PIPE SHALL BE REINFORCED CONCRETE PIPE — CLASS N.
8. ALL EXCA VA TION FOR UA/DERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE
CONSTRUCTION INDUSTRY (29 CFR PART 1926).
9. THERE IS A HIGH VOLTAGE OVERHEAD POWER LINE ROUTED THROUGH THE NORTH PORTION OF THE SITE.
CONTRACTOR SHALL COMPLY WITH THE VIRGINIA OVERHEAD HIGH VOLTAGE SAFETY ACT WHEN WORKING
WITHIN CLOSE PROXIMITY TO THIS HIGH VOLTAGE LINE. CONTRACTOR SHALL CONTACT ANN MARIE KNIGHT
WITH DOMINION POWER A T 434-972-679.3 PRIOR TO START OF CONS TRUCTION/DEMOLI TION ACTIVITIES.
TRAFFIC GENERATION TABLES,
INIATI r CUrr. rnh1r11T1nN
Sheet Index
DATE:
05116111
DRAWN BY
Sheet Number
Sheet Title
PILI
PEAK HOUR
09120111
C-1
COVER SHEET
LOR
#1
— REVISED
C-2
EXISTING CONDITIONS AND DEMOLITION PLAN
IN
OUT
TOTAL
C-3
LAYOUT PLAN
AMOUNT
UNITS
.ADT
C-4
GRADING AND UTILITY PLAN
LOR
#1
— REVISED
C-5
DRAINAGE NOTES, SECTIONS AND DETAILS
LOR
#1
— REVISED
C-6
GENERAL NOTES AND DETAILS
1,9200
Stati onFae
/Conve hence Store
946
--IS
dOTES-AND BET—""l`'
1,834
LOR
#1 — DELETE
ESC -1
STORMWATER MANAGEMENT PLAN
LOR
#1
— REVISED
ESC -2
E&S CONTROL PLANS (PHASES 1 & 2)
LOR
#1
— REVISED
ESC -3
E&S CONTROL PLAN (PHASE 3) & DETAILS
LOR
#1
— REVISED
ESC -4
E&S CONTROL NARRATIVE & NOTES
Jiffy Lube
941.
4
L-1
LANDSCAPING PLAN AND CALCULATIONS
L-2
LANDSCAPING DETAILS AND CHECKLIST
z
PH -1
PHOTOMETRIC PLAN
H�
PH -2
PHOTOMETRIC CUT SHEETS
MS -19 STATEMENT
1. EXISTING TOTAL SITE IMPERVIOUS AREA IS 42,240 SF AND THE PROPOSED TOTAL SITE IMPERVIOUS IS
39,790 SF, THEREFORE ADEQUATE CHANNEL ANALYSIS IS NOT REQUIRED FOR THIS PROJECT.
GENERAL CONSTRUCTION NOTES FOR SITE PLANS
1. PRIOR TO ANY CONSTRUCTION WITHIN ANY EXISTING PUBLIC RIGHT—OF—WAY, INCLUDING CONNECTION TO ANY
EXISTING ROAD, A PERMIT SHALL BE OBTAINED FROM THE VIRGINIA DEPARTMENT OF TRANSPORTATION
(VDOT). THIS PLAN AS DRAWN MAY NOT ACCURA TEL Y REFLECT THE REQUIREMENTS OF THE PERMIT. WHERE
ANY DISCREPANCIES OCCUR THE REQUIREMENTS OF THE PERMIT SHALL GOVERN.
2. ALL PAVING, DRAINAGE RELATED MATERIALS AND CONSTRUCTION METHODS SHALL CONFORM TO CURRENT
SPECIFICATIONS AND STANDARDS OF VDOT UNLESS OTHERWISE NOTED.
J. EROSION AND SIL TA TION CONTROL MEASURES SHALL BE PROVIDED IN ACCORDANCE WITH THE APPROVED
EROSION CONTROL PLAN AND SHALL BE INSTALLED PRIOR TO ANY CLEARING, GRADING OR OTHER
CONSTRUCTION.
4. ALL SLOPES AND DISTURBED AREAS ARE TO BE FERTILIZED, SEEDED AND MULCHED. THE MAXIMUM
ALLOWABLE SLOPE IS 2: 1 (HORIZONTAL: VERTICAL). WHERE REASONABLY OBTAINABLE, LESSER SLOPES OF 3: 1
OR BETTER ARE TO BE ACHIEVED.
5. PAVED, RIP—RAP OR STABILIZATION MAT LINED DITCH MAY BE REQUIRED WHEN IN THE OPINION OF THE
ALBEMARLE COUNTY DIRECTOR OF ENGINEERING, OR THE DIRECTOR'S DESIGNEE, IT IS DEEMED NECESSARY IN
ORDER TO STABILIZE A DRAINAGE CHANNEL.
6. ALL TRAFFIC CONTROL SIGNS SHALL CONFORM WITH THE VIRGINIA MANUAL FOR UNIFORM TRAFFIC CONTROL
DEVICES
7. UNLESS OTHERWISE NOTED ALL CONCRETE PIPE SHALL BE REINFORCED CONCRETE PIPE — CLASS N.
8. ALL EXCA VA TION FOR UA/DERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE
CONSTRUCTION INDUSTRY (29 CFR PART 1926).
9. THERE IS A HIGH VOLTAGE OVERHEAD POWER LINE ROUTED THROUGH THE NORTH PORTION OF THE SITE.
CONTRACTOR SHALL COMPLY WITH THE VIRGINIA OVERHEAD HIGH VOLTAGE SAFETY ACT WHEN WORKING
WITHIN CLOSE PROXIMITY TO THIS HIGH VOLTAGE LINE. CONTRACTOR SHALL CONTACT ANN MARIE KNIGHT
WITH DOMINION POWER A T 434-972-679.3 PRIOR TO START OF CONS TRUCTION/DEMOLI TION ACTIVITIES.
TRAFFIC GENERATION TABLES,
INIATI r CUrr. rnh1r11T1nN
PROPOSED SIVE GENERATION
1" = 20'
DATE:
05116111
DRAWN BY
WEEKDAY
AlO PEAK HOUR
PILI
PEAK HOUR
09120111
09130111
CDt �R
10127111
IN
OUT
TOTAL
IN
OUT
TOTAL
LAND IUSE
ITECODE
AMOUNT
UNITS
.ADT
W
Gasoline/Service
LU
Q
LL,
LLQ
W
C/)
z5
oC
zOrl
1,9200
Stati onFae
/Conve hence Store
946
12
I' ir�g
Stations
1,834
82
9
161
0
6
176
z0>
W
and Car Wash
o
T
r
Ln
0
V
co
i
0
ZLLJ "o ?r
ON
0—
NO CHANGE
Jiffy Lube
941.
4
Rays
PROPOSED SIVE GENERATION
APPROVALS
DEPARTMENT OF COMMUNITY DEVELOPMENT
(PLAINNER/ZONING)
(ENGINEERING)
(BUILDING OFFICIAL)
(ARC'HITECTURAL REVIEW BOARD)
(FIRE OFFICIAL)
(ALBIEMARLE COUNTY SERVICE AUTHORITY)
(VIRGINIA DEPARTMENT OF TRANSPORTATION)
P\_T H 13F 1�1
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C' FRANK V. POHL D
Lic No. 040626
��SSIC7NAl.
SCALE:
1" = 20'
DATE:
05116111
DRAWN BY
WEEKDAY
Ali PEAK HOUR
P
PEAK DOUR
09120111
09130111
CDt �R
10127111
IN
OUT
TOTAL
IN
OUT
TOTAL.
LAND IUSE
ITE CODE
.AMOUNT
UNITS
AIT
W
GaFnoli e/Servi e
LU
Q
LL,
LLQ
W
C/)
z5
oC
zOrl
3,02 SF
Station
w/Coinvenience Store
946
10
Fueling
Stations
1,528
69
66
135
75
72
146.
z0>
W
wind Car Wash
o
T
r
Ln
0
V
co
i
0
ZLLJ "o ?r
ON
0—
NO CHANGE
Jiffy Lube
941
4
Says
APPROVALS
DEPARTMENT OF COMMUNITY DEVELOPMENT
(PLAINNER/ZONING)
(ENGINEERING)
(BUILDING OFFICIAL)
(ARC'HITECTURAL REVIEW BOARD)
(FIRE OFFICIAL)
(ALBIEMARLE COUNTY SERVICE AUTHORITY)
(VIRGINIA DEPARTMENT OF TRANSPORTATION)
P\_T H 13F 1�1
O��
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C' FRANK V. POHL D
Lic No. 040626
��SSIC7NAl.
SCALE:
1" = 20'
DATE:
05116111
DRAWN BY
FVP
REVISIONS:
08119111
09120111
09130111
CDt �R
10127111
04112112
ISSUED FOR CONSTRUCTION:
LETTER OF REV. #1: 08/27/12
REMOVE OIL/WATER SEPARATOR
AND GRADING
These plans and associated
documents are the exclusive
property of POHL CONSULTING
and may not be reproduced
by any means in whole or in
part and shall not be
assigned to any third party
without the express written
consent of POHL CONSULTING.
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These plans and associated
documents are the exclusive
property of POHL CONSULTING
and may not be reproduced
by any means in whole or in
part and shall not be
assigned to any third party
without the express written
consent of POHL CONSULTING.
PROJECT NO.
10,E
S HEET NO.
C-1
OF 14
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PROJECT NO.
10,E
S HEET NO.
C-1
OF 14
Project Drainage Area Designation Entire Site
L Storm pollutant export in pounds, L= [P(Pl)Rv.,112 ) ( C(A)2.72I
CAST INTO PRECAST BOX WALL
Rv mean runoff coefficient, Rv = 0.05 a- 0.009(1)
(OUTLET PIPE LOCATION VARIES) CLEANOUT
PI shall Storm correction factor, 0.9
COVER
l percent imperviousness
TREE FRAME & GRATE CAST IN
P annual precipitation, 43` in Albermarle
CAST IN TOP SLAB TOP SLAB
A project area in acres in subject drainage area, A 1.146
TOP SLAB
C pollutant concentration, rmg/l or ppm target phosphorus
INTERLOCKING JOINT (TYP)
f factor applied to RR
8 x 6
V required treatment volume in cy, 0.5" over Irmperv. area = A(1)43560(0,5112)127
6'-01"
RR required removal , L(post) - f x L(pre)
4" SDR -35 PVC
%RR removal e1ciency , RR900IL(post)
10'-0"
Impervious Cover Computation (values in feet & square feet)
(1) 4x4
Item _ ...
12 x 4
pre-developmen Area O !post -development
'Area .........
Roads Length Width subtotal Length Width
subtotal
0 DI 0 0
G
0. 0 0' 0;.
0' 0
0 0,
01 0.
iF O :I
0 0
_.. _
'Driveways ..... Length Width no. subtotal 'Length Width no
Subtotal
and Walls 0' 0 0; 0 0
0 O
0; 01 0 01 0. 0
0 0
BY AMERICAST
Q I
Parking Lots, other . 1. 2 3 4 1
0-0
i 1pervious areas. 351967: 35967: 30724
f ;
0 30724;.
gavel areas .... Area ;,Area
o
0.701= t' x 0.70 =
0
Structures Area no. subtotal Area no.
Subtotal
C.Stoi-e 4249 1 424.9; C.Store 3029
1; 30291
Cart ash 1037
1 1037;
0 aCanopy 2976
1 2976;
Jiffy Lube l 2024 1; 2024 6273'4Jiffy Lube 2024
1 2024 9066.
Actively -grazed pasture & Area Area
yards and cultivated turf 7680 x 0.08 614A' 2083,x 0.08
_... ............ ...................... ...:. . ,:......, .. .. , .....,..... ..... ..,..., . . , _....,.:.,..............
166.64°
.....,,, ... .............
... .... , .....
Active crop land Area Area
x 0.25 = 0; x 0.25 =
0'.
Other Impervious Areas
0:
0
ImperyiousCover _ 5 8%1
80 0W
............
l(pcst)....
......... ............. ...
Rv(post)
0.77 61.7
New Development (For Development Areas, existing impervious cover <= 20%).
.......
_
C f l (pre) * Rv(pre) L(pre) (post).: RR % RR Area Type
..E.
IOEE % 0,8 79 5.42 -0.37 -7%'. Development Area
E- E E ...... ..: ....... ............ ...:..,, .. .... ..
E 0.8 2 89 1 2.71 'l8 7Q Drinking Water WterSheds
40 1 `�:.... 0.8`' ...,. 3 31 0 21 7 r Other Rural Land .
min. values
Redevelopment (For Devegplopme�/,;alt Areas, existing impervious cover > 2141%)
C f I (pre).:..Rv(pre) (p.,.,,,. (post)..f... >�1°{�.. 11 Area type
.... ,.,... .., ,,.,..ArGCi
0 °90 2 5.79 &42 0.21 41110 Development Area
' 0.8 8 2.71 0 25 ` 9° Drinking Water eatershedS ..
0.82 3.31 3.10 0 29 9'I Other Rural Land
Total load produced by the site = 5.79 pounds for 1.146 acres.
Pounds produced per acre = 5.79 Its 1 1.146 acres = 5.1 lbs/ac..
Required Removal Rate for this. Site = 0,29 pounds (or 5% of the total phosphorus load).
Pounds required to be removed per acre = 0,29 I`as / 1.146 acres = 0.253 lbs/ac.
Treatment provided by use of Filterra Unit With 65% removal rate.
Area of Treatment (A) = €x.22 acre's (this area drains to the 8'x6° Filterra Unit)
% rel oa,al (%RR) = 65% (Filterra provides a 65% treatment rate)
Pollutant Load (PL) = 5.1 Ib/ac (pollutant loan per acre of the site)
Pollutant Removal = A * %RR * PL = 0.73 lbs, which is greater than 0.29 lbs, therefore, okay.
Therefore, use 1 Filterra (whit with a treatment area of 0.22 acres.
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Filterra Standard Plan Notes fi [te rrd
C onstruction & lustalllation
A, Each unit shall be constructed at the locations and elevations according to the sizes
shown oil the approved drawings Any modifications to the elevations or location shall
be at the direction of and approved by the Engineer.
B: if die Filte raO is stored before installation, the top slab must be placed on the box
using the 2x4 wood p ovided, to prevent any contarnit ation from the site. 2511 internal
fittings supplied (if any), must be left in place as perthe delivery.
C. The unii_ shall be placed on a compacted sub -grade with a ii- irlitnum 6 -inch gravel base
matching the final b ade of the curb line in the area of the unfit. The unit to be placed
such that the unit and top slab: match the grade of the curb in fire area, of the unit.
Compact, undisturbed sub -grade materials to 95% of maximum density at +1- 2°10 of
Optimum moisture. Unsuitable material below sub -grade shall be replaced to thesit--
engineer's
iteengineer's approval.
0; Outlet connections shall be aligned and sealed. to meet the approved draNvings with
moclificatior>s necessary to meet site conditions and local regulations,
E. Once the unit is set, the internal wooden forms and protective mesh cover mustbe left
intact. Remove only the temporary wooden shipping blocks between the box and top
slab. The top lid should be sealed onto the box. section before :backfilling, using a non-
shrink grout, butyl rubber or similar waterproof seat, The boards on top of the lid and
boards sealed in the urnif s throat must NOT be removed. The Supplier (Americast or
its authorized deader) will. remove these sections: at the time• of activation. Backfilling
should be performed in it careful mariner, bringing the appropriate fill material up in
6" lifts on all sides. Precast sections s1lall be set Ma manlier that will result in a.
watertight, joint, lir all instances, installation of Filt,,mi' unlit, shall conform to ASTM
specification C891 "StaLndard Practice for Installation of Underground Precast Utility
Structures", unless directed othemrise in contrast documents.
F. Curb and gutter construction (,,where present) shall ensure that the flow -line of the
Filterra units is at a greater elevation than the flow -line of the bypass structure or
relief (drop inlet, curb out or similar). Failure to comply with alis guideline may cause
failure and/or daniage to the Filtzrra`4�1 environmental device -
G. Each Filterra(' unit must receive adequate irrigation to ensure survival of the living
system during periods of dricr weather. This inay be achieved through gutter flow or
through the tree grate.
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AWvation
A Acdvation of the Filters," unit is performed ONLY by the Supplier; Ptu chaser is
responsible for Filterrao inlet protection and subsequent. clean but cost This process
cannot Commence until the project site is hilly stabilized and cleaned (full
landscaping, grass cover, filial paving and street sweeping completed), negating the
shrine of construction materials Contaminating the Filterra system. Care shall be
taken during construction not to d mage the proteeti.ve throat and top plates.
E. Activation includes installation of plant(s) and midelilayers as necessary.
Maintenance
A. Each correctly installed Filterra0 unit is to be maintained by the Supplier, or a
Supplier approved contractor for a umliturun period of 1 year. The cost of This service
is to be indllded in the price of cacti ,Filterra:, unit Extended Iriaintenance contracts
are available at extra cost upon request,
F. Annual maintenance consists of a mammurn of (2) scheduled visits. The visits are
scheduled seasonally,, the spring ,,visit aims to clean up after winter loads including
salts: and saud5. The fall visit helps the system by removing excessive leaf litter
C Each maintenance visit consists of the following tasks.
1. Filtefral'writ inspection
2, Foreign debris, silt, mulch & trash removal,
3. Filter media evaluation and recharge as necessary.
4. Plant health evaluation and pruning or replacement as necessary
5. Replacement ofmnlch
ti. Disposal cif all maintenance refuse items
Maintenance records updated kind stored (reports available upon request)
D. The ,beginning and ending date of Supplier's obligation to maintain the installed.
system shall be determined by the Supplier at the time the system is: activated, Owners.
must promptly notify the Supplier of any damage to the Plant(s), which constitutefS)
an integral part of the bioretetltion technology.
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`INLET SHAPING
(BY OTHERS)
A
4
CURB (BY OTHERS)
SDR -35 PVC COUPLING PLAN 'VIEW
CAST INTO PRECAST BOX WALL
W
(OUTLET PIPE LOCATION VARIES) CLEANOUT
PLANT AS SUPPLIED
COVER
BY AMERICAST
TREE FRAME & GRATE CAST IN
(NOT SHOWN GALVANIZED
CAST IN TOP SLAB TOP SLAB
ANGLE NOSING
FOR CHOWN}
TOP SLAB
ICURB AND GUTTER
INTERLOCKING JOINT (TYP)
°0 (BY OTHERS)
8 x 6
8'-0"
6'-01"
�- STREET
4" SDR -35 PVC
�
10'-0"
6'-01"
(1) 4x4
O
12 x 4
I
iv
(2) 3x3
4" SDR -35 PVC
DOWEL BARS
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6'-01'
(2) 4x4
a 12" O.C.
13 x 7
13'-0"
,=
(2) 4x4
FILTER MEDIA PROVIDED
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MULCH PROVIDED BY A14ERICAST
UNDERDRAIN SYSTEM
BY AMERICAST
UNDERDRAIN STONE PROVIDED BY AMERICAST
SECTION) A -A
DESIGNATION
L
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TREE GRATE
QTY & SIZE
OUTLET
PIPE
6 x 4
6'-0"
4'-01"
(1) 3x3
4" SDR -35 PVC
8 x 4
8'-0"
4' -DI"
(1) 30
4" SDR -35 PVC
8 x 6
8'-0"
6'-01"
(1) 44
4" SDR -35 PVC
10 x 6
10'-0"
6'-01"
(1) 4x4
6" SDR -35 PVC
12 x 4
12'-0'
4'-0l"
(2) 3x3
4" SDR -35 PVC
12 x 6
12'-0"
6'-01'
(2) 4x4
6" SDR -35 PVC
13 x 7
13'-0"
7'-0Y'
(2) 4x4
6" SDR -35 PVC
MODIFICATIONS OF DRAWINGS ARE ONLY PERMDTED DRAWING AVAILABLE IN TIF FILE FORMAT.
BY WRITTEN AUTHORIZATION FROM FILTERRA
DATE: 09-04-07 DWG: FTNW-3
PIRECAST FILTERRA® UNIT f l [too FrS
NARIROW WIDTH CONFIGURATION
US PAT 6,277,274
Copyright®2G076y Amaice� AND 6,569.321
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DATUM ELEV
440.00
VERTICAL
GRAPIHIC SCALE
5 0 2.5 5.0 10
( IN FEET )
1 inch = 5 ft.
HORIZONTAL
GRAPHIC SCALE
50 0 25 50 100
( IN FEET )
1 iruch = 50 ft.
SECTIONS VIEWS OF FILTERRA IN TYPICAL FLUME APPLICATIONS
SEE BELOW FOR DETAILS NOT SHOWN
STANDARD 90' NOSING
(OTHER NOSING AVAILABLE
UPON REQUEST) �-
PRECAST
s TOP SLAB
4-6" CLEAR THROAT
OPENING
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CAST -IN-PLACE
DEPRESSED GUTTER ° e °
AND THROAT OPENING e °A
(BY CONTRACTOR)
#4 DOWEL BARS 0 12" O.C. BY AMERICAST
TO BE BENT AS NECESSARY BY CONTRACTOR
PRIOR TO INSTALLATION OF FIELD POURED GUTTER
s THROAT PROTECTION DEVICCE
ii DO NOT REMOVE - LEAVE:
I4 IN PLACE UNTIL SITE IS
STABILIZED AND FILTERRA
IS ACTIVATED
Li
PRECAST BOX WALL -•''
IMPORTA14T
FILTERRA FLOWLINIE MUST
BE AT A HIGHIER
SECTION VIEW ELEVATION THAN (BYPASS
STANDARD FILTERRA THROAT OPENING FL7WLINEOC HDREP ER) INLET DR
MODIFICATIONS OF DRAWINGS ARE ONLY PERMITTED
BY WRITTEN AUTHORIZATION FROM FILTERRA DRAWING AVAILABLE IN 7IFF FILE FORMAT.
DATE: 02-27-06 1 DWG: CGT -4
L1u1J�Ln���L L�J� FILTERRA®THROAT OPENING
AND GUTTER OR FLUME DETAIL
Copy,i&O2W7byA-i-t US PAT 6,277,2
AND 6,569,3211
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152.19 L.F.
1.25%
15in. RCP
CANOPY ROOF !DRAIN (TYP.
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FLUME - SLOPED
CROWNED FLUME
05116111
DRAWN BY
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PRECAST FILTERRA
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PRECAST DOWEL
(TYP) (CROWNED AND SLOPED
FILTERRA
TOWARD FILTERRA THROATS)
BOX WALL
SECTIONS VIEWS OF FILTERRA IN TYPICAL FLUME APPLICATIONS
SEE BELOW FOR DETAILS NOT SHOWN
STANDARD 90' NOSING
(OTHER NOSING AVAILABLE
UPON REQUEST) �-
PRECAST
s TOP SLAB
4-6" CLEAR THROAT
OPENING
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CAST -IN-PLACE
DEPRESSED GUTTER ° e °
AND THROAT OPENING e °A
(BY CONTRACTOR)
#4 DOWEL BARS 0 12" O.C. BY AMERICAST
TO BE BENT AS NECESSARY BY CONTRACTOR
PRIOR TO INSTALLATION OF FIELD POURED GUTTER
s THROAT PROTECTION DEVICCE
ii DO NOT REMOVE - LEAVE:
I4 IN PLACE UNTIL SITE IS
STABILIZED AND FILTERRA
IS ACTIVATED
Li
PRECAST BOX WALL -•''
IMPORTA14T
FILTERRA FLOWLINIE MUST
BE AT A HIGHIER
SECTION VIEW ELEVATION THAN (BYPASS
STANDARD FILTERRA THROAT OPENING FL7WLINEOC HDREP ER) INLET DR
MODIFICATIONS OF DRAWINGS ARE ONLY PERMITTED
BY WRITTEN AUTHORIZATION FROM FILTERRA DRAWING AVAILABLE IN 7IFF FILE FORMAT.
DATE: 02-27-06 1 DWG: CGT -4
L1u1J�Ln���L L�J� FILTERRA®THROAT OPENING
AND GUTTER OR FLUME DETAIL
Copy,i&O2W7byA-i-t US PAT 6,277,2
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1.25%
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CANOPY ROOF !DRAIN (TYP.
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LEGEND
PROPOSED C/L GRADE
EXISTING C/L GRADE
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Lic No. 04�0626
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DATE:
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LEGEND
PROPOSED C/L GRADE
EXISTING C/L GRADE
H C7F l%I
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Lic No. 04�0626
�IS10NAL
SCALE;
1" = 20'
DATE:
05116111
DRAWN BY
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REVISIONS:
08119111
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04112112
ISSUED FOR CONSTRUCTION,
LETTER OF REV. #1: 08/27/12
REMOVE OIL/WATER SEPARATOR
AND GRADING
These plans and associated
documents are the exclusive
property of POHL CONSULTING
and may not be reproduced
by any means in whole or in
part and shall not be
assigned to any third party
without the express writt il�'%
consent of POHL CONSUL'TNt.
PROJECT NO.
102
SHEET NO.
OF 14
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These plans and associated
documents are the exclusive
property of POHL CONSULTING
and may not be reproduced
by any means in whole or in
part and shall not be
assigned to any third party
without the express writt il�'%
consent of POHL CONSUL'TNt.
PROJECT NO.
102
SHEET NO.
OF 14
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PHASE 2 EROSION &SEDIMENT CONTROL PLAN
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documents are the exclusive
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PHASE 1 EROSION &SEDIMENT CONTROL PLAN
PHASE 2 EROSION &SEDIMENT CONTROL PLAN
PROJECT NO.
102
SHEET NO.
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1. SET THE STAKES
6' MAX.
---ate
FLOW
J. STAPLE FILTER MATERIAL
TO STAKES AND EXTEND
IT INTO THE TRENCH.
2. EXCAVATE A 474" TRENCH
UPSLOPE ALONG THE LINE OF
STAKES
x
710A•..- 4"
4. BACKFILL AND COMPACT
THE EXCAVATED SOIL.
POINTS A SHOULD BE HIGHER THAN POINT B.
DRAINAGEWA Y INSTALLATION
(FRONT ELEVATION
Va. DSWC
sF CONSTRUCTION OF A SILT FENCE PLA7E3 �5 #
(WI THOU T WIRE SUPPOR T)
NO SCALE
/ r
GRAVEL FILTER * 12•'
RUNOFF WATER \ WIRE MESH
FILTERED WATER
6
41
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SEDIMENT II hIIIIII . D d` �`ll.l
CONCRETE GUTTER 12 CURB INLET
SPECIFIC APPL1CA77ON
THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS
WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO
CAUSE INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND
UNPROTECTED AREAS.
* GRAVEL SHALL BE VDOT #3 #357 OR 5 COARSE AGGREGATE.
Va. DSWC
PLA TE#
IP GRAVEL CURB INLET SEDIMENT FILTER 3.o7—s
NO SCALE
2"x4" WOODEN FRAME
1.5' MAX.
DROP INLET
AME
ELEVATION OF STAKE AND
FABRIC ORIENTA TION
SPECIFIC APPLICATION
THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE INLET DRAINS A
RELA77VELY PLFLAT AREA (SLOPE NO GREATER THAN 57.) WHERE 774E INLET SHEET OT
OVERLAND FLOWS (NOT EXCEEDING 1 C.F.S.) ARE TYPICAL. THE METHOD SHALL NOT
APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS IN STREET OR HGHWAY
MEDIANS. Va. DSWC
SIL T FENCE PLATE#
IP DIROP INLET PROTECTION QD
NO SCALE
STONE CONSTRUCTION ENTRANCE
1 71' ISL I L%1!rlti
j iL1Q a=" C WL 1 41
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7C ITL
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SEDIMENT FIL TER
CURB INLET
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WIRE SCREEN CONCRETE BLOCK
RUNOFF OVERFLOW r--\� FILTERED WATER
WATER WITH
SEDIMENT V =
lip
SEDIMENT
WIRE SCREEN > ` • D '
2" X 4' VIOOD STUD CURB INLET
SPECIAL APPLICATION Va. DSWC
PLA TE#
THIS METHOD IOF INLET PROTECTION IS APPLICABLE AT 3.07-8
CURB INLETS WHERE AN OVERFLOW CAPABILITY IS NECESSARY
TO PREVENT EXCE;SSNE PONDING IN FRONT OF THE STRUCTURE.
* GRAVEL SHALL ]BE VDOT #3, #357 OR #5 COARSE AGGREGATE
SOURCE: VA. DSWC
18" MIN.
RUNOFF WATE
WITH SEDIMEA
GRAVEL* (12"MIN. DEPTH)
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FILTERED
WATER
SPECIFIC APPLICATION
THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE
HEAVY CONCENTRATED FLOWS ARE EXPECTED, BUT NOT
WHERE PONDING AROUND 774E STRUCTURE M1GHT CAUSE
EXCESSIVE INCONVENIENCE OR DAMAGE TO ADJACENT
STRUCTURES AND UNPROTECTED AREAS
* GRAVEL SHALL BE VDOT #3, #357 OR #5 COARSE
AGGREGATE.
Va. DSWC
GRAVEL AND WIRE MESH DROP PLAT-#
1 INLET SEDIMENT FILTER 3 ---7
\
NO SCALE
r1-)e.4Ae1'7W'n cnll
Va. DSWC
PLATE#
DD TEMPORARY DIVERSION DIKE 3.09-1
NO SCALE
2 ACRES OR LESS OF DRAINAGE AREA:
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3' MIN.
GA THER
EXCESS
AT
-"--�--- — —
/� CORNEry
PERSPECTIVE VIEWS
STAKE
ELEVATION OF STAKE AND
FABRIC ORIENTA TION
SPECIFIC APPLICATION
THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE INLET DRAINS A
RELA77VELY PLFLAT AREA (SLOPE NO GREATER THAN 57.) WHERE 774E INLET SHEET OT
OVERLAND FLOWS (NOT EXCEEDING 1 C.F.S.) ARE TYPICAL. THE METHOD SHALL NOT
APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS IN STREET OR HGHWAY
MEDIANS. Va. DSWC
SIL T FENCE PLATE#
IP DIROP INLET PROTECTION QD
NO SCALE
STONE CONSTRUCTION ENTRANCE
1 71' ISL I L%1!rlti
j iL1Q a=" C WL 1 41
I'lJ SIDIE ELEVATION
7C ITL
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SEDIMENT FIL TER
CURB INLET
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WIRE SCREEN CONCRETE BLOCK
RUNOFF OVERFLOW r--\� FILTERED WATER
WATER WITH
SEDIMENT V =
lip
SEDIMENT
WIRE SCREEN > ` • D '
2" X 4' VIOOD STUD CURB INLET
SPECIAL APPLICATION Va. DSWC
PLA TE#
THIS METHOD IOF INLET PROTECTION IS APPLICABLE AT 3.07-8
CURB INLETS WHERE AN OVERFLOW CAPABILITY IS NECESSARY
TO PREVENT EXCE;SSNE PONDING IN FRONT OF THE STRUCTURE.
* GRAVEL SHALL ]BE VDOT #3, #357 OR #5 COARSE AGGREGATE
SOURCE: VA. DSWC
18" MIN.
RUNOFF WATE
WITH SEDIMEA
GRAVEL* (12"MIN. DEPTH)
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FILTERED
WATER
SPECIFIC APPLICATION
THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE
HEAVY CONCENTRATED FLOWS ARE EXPECTED, BUT NOT
WHERE PONDING AROUND 774E STRUCTURE M1GHT CAUSE
EXCESSIVE INCONVENIENCE OR DAMAGE TO ADJACENT
STRUCTURES AND UNPROTECTED AREAS
* GRAVEL SHALL BE VDOT #3, #357 OR #5 COARSE
AGGREGATE.
Va. DSWC
GRAVEL AND WIRE MESH DROP PLAT-#
1 INLET SEDIMENT FILTER 3 ---7
\
NO SCALE
r1-)e.4Ae1'7W'n cnll
Va. DSWC
PLATE#
DD TEMPORARY DIVERSION DIKE 3.09-1
NO SCALE
2 ACRES OR LESS OF DRAINAGE AREA:
}
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al.,pfoved setthig tareta to remove etlitii Tit. All hedittlent "lirjll be pmvctifed, Rolm,
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.A. ludnillittazt Water tip off inch cilu, t l'e tai: palled N� tli at ai inh..mina T Nidi b allco ll
iaa a �F�l.i ix�r �i7iii. -1 r:Ciaiaitt i 1, iiiliTM iir <r�leata tib
collstant p es itte Wasla t,val(et: aiiaast be a:mliecl away Kom (lie etiti'all e to III
al.,pfoved setthig tareta to remove etlitii Tit. All hedittlent "lirjll be pmvctifed, Rolm,
elft, aiii;�_ s tilaisi iii Haig, rlitr lie f,
PAVED WASH :.ACK GE
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