HomeMy WebLinkAboutWPO202200030 Plan - VSMP 2022-07-12r
SITE DATA
OWNER: MARTIN MARIETTA MATERIALS, INC
P.O. BOX 8040
FORT WAYNE IN, 46898
COMPANY INC
EROSION CONTROL &
ASPHALT PLANT OPERATOR: S.L. WILLIAMSON ,
1230 RIVER RD E R MANAGIVIENT PLAN
T M VVAT
S R O
PLAN PREPARERCHARlOTTESVILLE, VA 22901 : ROUDABUSH, GALE. de ASSOCIATES
999 SECOND ST. SE. SUITE 201
CHARLOTTESVILLE, VA. 22902
(434)-977-0205
TAX MAP PARCEL No: 08800-00-00-01800
PARCEL AREA- 579.13 ACRES
APPLICATION AREA: 3.13 ACRES (EXTENT OF SITE DEVELOPMENT PLAN APPLICATION (SDP) WILL
FOLLOW THE LIMITS OF THE THE EXISTING S.L. WILLIAMSON LEASE AREA ON
TMP 88-18)
ZONING: RURAL (RA)
FLOOD HAZARD OVERLAY (FH)
NATURAL RESOURCE EXTRACTION OVERLAY (NR)
STEEP SLOPES OVERLAY
PREVIOUS APPLICATIONS: SP199700041 SPECIAL USE PERMIT - WITHDRAWN
FDP202000005 FLOOD DEVELOPMENT PERMIT - APPROVED 7/20/2021
SP201900009 SPECIAL USER PERMIT - APPROVED 1/19/2022
SE202100036 CRITICAL SLOPE WAIVER - APPROVED 1/19/2022
SE202100037 BUILDING SITE RATIO WAIVER - APPROVED 1/19/2022
EXISTING USE WITHIN SDP AREA: ASPHALT PLANT
PROPOSED USE WITHIN SDP AREA: ASPHALT PLANT (SPECIAL USE PERMIT SP201900009)
MAXIMUM BUILDING HEIGHT: 75'
S.L. WILLIAMSON ASPHALT PLANT
SETBACKS: 100' FROM PUBLIC RIGHT-OF-WAY OR ANY ADJOINING RESIDENTIAL DISTRICT
200' FROM ANY CONTIGUOUS PROPERTY WITH RESIDENTIAL LOTS LESS THAN
OR EQUAL TO 1 ACRE OR OCCUPIED DWELLING
MAXIMUM LOT COVERAGE BOX OF TOTAL SITE (3.52 ACRES)
ACTUAL LOT COVERAGE: PARKING 1,515 SF (0.04 ACRES)
TRAVEL WAYS 117,003 SF (2.69 ACRES)
ASPHALT PLANT 8,796 SF (0.20 ACRES)
TOTAL AREA 127,314 SF (2.92 ACRES)
MAGISTERIAL DISTRICT: SAMUEL MILLER
STORMWATER MANAGEMENT: THE DEVELOPMENT OF S.L. WILLIAMSON ASPHALT PLANT, WILL OCCUR IN
TWO PHASES OR SEPARATE STAGES OF CONSTRUCTION. THE COMPLETED
PROJECT WILL UTILIZE NON -CONCENTRATED DISCHARGE TO FACILITATE
CHANNEL AND FLOOD PROTECTION. STORMWATER RUNOFF WILL BE
COLLECTED AND CONVEYED VW SHEETFLOW. WATER QUALITY PROVISIONS
ARE PROPOSED VIA OFFSITE NUTRIENT CREDIT PURCHASE.
REGARDING WATER QUALITY ANALYSIS:
9VAC25-870-63, WATER QUALITY DESIGN CRITERIA REQUIREMENTS.
THE WATER QUALITY PORTIONS OF THIS PLAN WILL BE SATISFIED BY
REDUCING THE IMPERVIOUS AREA.
REGARDING WATER QUANTITY ANALYSIS:
COMPLIANCE OF 9VAC25-870-66-8 (CHANNEL PROTECTION):
IN ACCORDANCE WITH CHANNEL PROTECTION SECTION B.) OF
9VAC25-870-66 OF VIRGINIA LAW; NO CONCENTRATED FLOWS ARE
DESIGNED TO LEAVE THE SITE THEREFORE 870-66-B IS NOT APPLICABLE
COMPLIANCE OF 9VAC25-870-66-C (FLOOD PROTECTION):
IN REFERENCE TO FLOOD PROTECTION SECTION C.1), NO CONCENTRATED
FLOWS ARE DESIGNED TO LEAVE THE SITE THEREFORE 870-66-C IS NOT
APPLICABLE
COMPLIANCE OF 9VAC25-870-66.D (SHEET FLOWS):
IN REFERENCE TO INCREASED VOLUMES OF SHEET FLOWS, SECTION D.)
THIS SITE IS BORDERED BY, AND DISCHARGES TO. A MAPPED FLOOD PLAIN.
LANDCOVER AND USE FROM THIS PROJECT WILL BE FUNDAMENTALLY
IDENTICAL TO THE CURRENT USE AND LANDCOVER THEREFORE AS RUNOFF
IS RELATIVELY UNCHANGED. IMPLICATIONS TO DOWN STREAM CHANNELS AND
AREA FLOOD PLAINS ARE EXPECTED TO BE UNCHANGED AS WELL.
WATERSHED: NORTH FORK HARDWARE RIVER
TOPOGRAPHY: AERIAL TOPOGRAPHY FROM KUCERRA INTERNATIONAL DECEMBER, 2017
DATUM: HORIZONTAL NAD 83
BENCHMARK: AERIAL TARGET O 607.38 (SEE SHEET 2 FOR LOCATION)
CRITICAL SLOPES: MANMADE CRITICAL SLOPES ARE LOCATED WITHIN THE SOP AREAL A CRITICAL SLOPES
WAIVER HAS BEEN APPROVED WITH SP201900009
FLOODPLAIN: SDP AREA IS LOCATED IN ZONE X PER LOMR 20-03-1246P APPROVED ON
07/13/2020,
FLOODPLAIN DEVELOPMENT PERMIT (FDP202000005) WAS APPROVED 07/20/21.
PARKING REQUIRED: ONE (1) SPACE PER EMPLOYEE
3-4 EMPLOYEES - 4 SPACES REQUIRED
PARKING PROVIDED: 4 SPACES PROVIDED
LANDSCAPING: SCREENING TO BE PROVIDED BY EXISTING TREES ALONG THE WESTERN PROPERTY LINE
OF TMP 88-18. THE STRIP OF EXISTING TREES VARIES FROM 20'-40' IN WIDTH TO
THE WESTERN PROPERTY LINE IN THE VICINITY OF THE ASPHALT PLANT.
LIGHTING: AT THIS TIME, NO SITE LIGHTING IS PROPOSED WITH THE SITE PLAN. IF SITE LIGHTING IS
PROPOSED AT A LATER DATE, THE LIGHTING WILL COMPLY WITH Z.O. CHAPTER 18-4.17.
OUTDOOR LIGHTING.
SEWER FACILITIES: THIS SITE IS CURRENTLY SERVED WITH A PUMP AND HAUL SYSTEM. THE EXISTING
SEPTIC TANK WILL BE REMOVED AND REPLACED AS PART OF THIS PROJECT. THE
NEW SYSTEM WILL ALSO BE A PUMP AND HAUL SYSTEM.
CLOSEST WATER SOURCE IS A DRY HYDRANT LOCATED ON TMP 08800-00-00-000A1, NEAR THE
INTERSECTION OF RT. 29 AND RED HILL SCHOOL ROAD.
EXISTING IMPERVIOUS AREA W/IN LEASE AREA - 128,196 SF (2.94 AC)
PROPOSED IMPERVIOUS AREA W/IN LEASE AREA - 127,314 (2.92 AC)
(9 RED HILL QUARRY
SAMUEL MILLER MAGISTERIAL DISTRICT
COUNTY OF ALBEMARLE, VA
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SCALE: 1'=2000 FEET
PROJECT SITE IS NOT LOCATED WITHIN THE WATERSHED OF A PUBLIC WATER SUPPLY RESEVOIR
NO EVIDENCE OF A BURIAL SITE WAS FOUND WITHIN THE SDP/PROJECT AREAL
THE STREAM BUFFER SHOWN HEREON IS BASED UPON THE APPROXIMATE LOCATION OF THE CENTERLINE OF THE EXISTING
CREEK LOCATED VIA A HANDHELD GPS DEVICE. THE STREAM BUFFER SHALL BE MANAGED IN ACCORDANCE WITH THE
ALBEMARLE COUNTY WATER PROTECTION ORDINANCE.
A PRELIMINARY JURISDICTIONAL DETERMINATION FOR THE CREEK HAS BEEN OBTAINED FROM THE CORPS OF ENGINEERS
DATED MAY 9. 2019. NAO-2019-00515. THE PRELIMINARY JURISDICTIONAL DETERMINATION IS BASED UPON THE GPS
LOCATION OF THE CREEK.
TMP 88-18 IS NOT LOCATED WITHIN THE AGRICULTURAL -FORESTAL DISTRICT.
TMP 88-18 IS NOT LOCATED WITHIN THE WATERSHED OF A PUBLIC WATER SUPPLY RESERVOIR.
APPROVALS
DEPARTMENT OF COMMUNITY DEVELOPMENT DATE
PLANNING / ZONING
ENGINEERING
SHEET INDEX
SHEET 1---------- COVER SHEET
SHEET 2---------- OVERALL EXTENTS OF TMP 88-18
SHEET 3---------- EXISTING CONDITIONS
SHEET 4---------- EXISTING CONDITIONS
SHEET 5---------- EROSION CONTROL PLAN - PHASE 1
SHEET 6---------- EROSION CONTROL PLAN - PHASE 2
SHEET 7---------- SETTLING BASIN PROFILES
SHEET 8---------- EROSION CONTROL NARRATIVE
SHEET 9---------- EROSION CONTROL NOTES & DETAILS
SHEET 10---------- OVERALL DRAINAGE AREA TO EXISTING CULVERTS
SHEET 11--------- STREAM BUFFER MITIGATION PLAN
SHEET 12--------- STREAM BUFFER MITIGATION PLAN, NOTES & DETAILS
EROSION CONTROL NOTES
1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION
CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK
PRIOR TO THE FINAL INSPECTION.
2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO
MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK
AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS.
3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN
CLEARING.
4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE
AT ALL TIMES.
5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS
(INCLUDING, BUT NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT
A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN
APPROVING AUTHORITY.
6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES
NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING
AUTHORITY.
7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING
LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED.
8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE.
9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH
RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE
EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY.
10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA.
11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT
MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS.
12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE
SECTION 5.1.28.
13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF
ALBEMARLE.
14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO
THE HOURS OF 7:OOAM TO 9:OOPM.
15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAN MAINTAINS LATERAL
SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND
IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE 0 SLIDES, SINKING, OR COLLAPSE.
16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT
STORMWATER MANAGEMENT FACILITIES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY
THIS PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY.
17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75
LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST A 50/50 MIX OF ANNUAL
RYEGRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY
THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF.
ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR.
18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH.
AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS/1000SF,INCORPORATED INTO THE TOP 4-6
INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT 1000LBS/ACRE AND CONSIST OF A 10-20-10
NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT 180LBS/ACRE AND CONSIST OF 95% KENTUCKY
31 OR TALL FESCUE AND 0-5% PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE
APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL
INSPECTOR.
19. MAINTENANCE: ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL. ANY DAMAGE OR
CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIR IMMEDIATELY. SILT TRAPS ARE TO BE CLEANED
WHEN 50% OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS ARE TO BE
RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION DYKES
WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED IMMEDIATELY.
20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED WITHIN 30 DAYS OF
FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE
COUNTY EROSION CONTROL INSPECTOR.
21. THIS PLAN SHALL BE VOID IF THE OWNER DOES NOT OBTAIN A PERMIT WITHIN 1 YEAR OF THE DATE OF
APPROVAL. (WATER PROTECTION ORDINANCE SECTION 17-204G).
22. PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS WITHIN NINE (9) MONTHS AFTER
THE DATE THE LAND DISTURBING ACTIVITY COMMENCED. (WATER PROTECTION ORDINANCE SECTION
17-207B).
23. THESE PLANS DO NOT GUARANTEE THE EXISTENCE, NON-EXISTENCE OR LOCATION OF UTILITIES.
CONTRACTOR SHALL VERIFY THE EXISTENCE AND LOCATION OR THE NON-EXISTENCE OF UTILITIES. AT LEAST
48 HOURS PRIOR TO ANY EXCAVATION OR CONSTRUCTION, CONTRACTOR SHALL NOTIFY MISS UTILITY
(1-800-552-7001) AND/OR THE RESPECTIVE UTILITY COMPANIES FOR GAS, WATER, SEWER, POWER,
PHONE AND CABLE, CONTRACTOR SHALL TIMELY ARRANGE TO HAVE THE VARIOUS UTILITIES LOCATED, AND
TO HAVE THEM REMOVED OR RELOCATED, OR TO DETERMINE THE METHOD OF PROTECTION ACCEPTABLE TO
THE RESPECTIVE OWNER, IF THE METHOD OF PROTECTION IS NOT OTHERWISE SPECIFIED. CONTRACTOR
SHALL CONDUCT ITS WORK IN THE VICINITY OF EXISTING UTILITIES IN ACCORDANCE WITH THE RESPECTIVE
UTILITY'S RULES AND REGULATIONS. ANY COST INCURRED FOR REMOVING, RELOCATING OR PROTECTING
UTILITIES SHALL BE BORNE BY CONTRACTOR UNLESS INDICATED OTHERWISE. CONTRACTOR SHALL EXCAVATE
TO LOCATE BURIED UTILITIES FAR ENOUGH IN ADVANCE OF ITS WORK TO ALLOW FOR HORIZONTAL AND
/OR VERTICAL ADJUSTMENTS TO ITS WORK AND/OR THE UTILITIES. NO ADJUSTMENT IN COMPENSATION OR
SCHEDULE WILL BE ALLOWED FOR DELAYS RESULTING FROM CONTRACTOR'S FAILURE TO CONTACT AND
COORDINATE WITH UTILITIES.
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DATE:
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SCALE:
AS SHOWN
JOB:
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FILE:
8719
SHEET:
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Lic. No.
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FILE:
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SHEET:
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TMP' l00-2 �� e �� ��00a I STEEP SLOPES (OVER 25�)*
CROWN ORC ARD COMPANY
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\ / _ ( RM PANEL # 51003C0405 )
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Dry Depth o FT. ^ \ '
Yields Dry Bottom Area of 2904.00 S.F. p5� _ _� "" l ' / '
With Volume o 4904.0 C.F. m Y01 C.Y. l
Tar et Bottom LengthofTre�FT. 1 ,, T P �$ 1 ^'r`e,..-�....-.
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''MART/N MAR/ETTA "'
-'�' N'OT�:(�O ZRA-CTOR
Trap No. 1 , / / �-- `r\°t
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Drainage Area= 2.60 A�. , OT:EX��STING SETTLING BAST-N TO BE RE,L6�'�TfY� .. \: J ! , t ; 'CORD CONSTRUCTION ,Il_,,.
Length= 16 FT. \ L.___- --- TO IN8`TAL��/ER$ION ZONING: RA
Bottom of Eacay. Wet Area- 90 rc 16 or 1406.00 S.F.@Elev. 577.0 OK �AN[ 11-1,RUCTED PER THE CURRY-N`f.L`;( k liS1C-� 2 DIKEVACANT
- `� `J% DIR�ING RU'NOF USE:
Depth of Wet Storage= 3 �. , DIMNS�ONS AT-THE--N-OTED,LGEA-TIflf3;,Ti�CkC,,-''\®►, - ' ,a - - u ' -
WetCteanootElev= 578.5-�' ' - - --------
Bottom of Weir= 96 a 22 m 2075.73 S.F.@Elev. 580.0 OK ,O - ROTE`C�T-STREAM,FRO.M AN'f-PC)L; ',rt�NT�'' '/ Z A00\ _ --.1 , -' �TO SEDIMEN�\TRAP AS -,
/ / ' J /�, \\\ \1\, /ram rr_ I
Depth of Dry Storage- 2 FT. / /'`^ i '''' r • / i ,. r `
p/ SOON AS ON SITE--� I ' \��'^ s
Top of Berm- 134 30 or 3080.71 S,F. @i Elev. 583.0 OK rFr.lC IRI9R�C'!.TLYAMT--IN S'ET_TUN 9A8M__,�� p �.r H L `/I�r \`'
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SIREW BUFFER
r
MARTIN MARIETTA
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% ZONING: RA
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LEGEND
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CRITICAL SLOPES (OVER 25%)*
r WPO STREAM BUFFER
aaa�
EXISTING TRAVEL WAYS
100—YEAR FLOODPLAIN
(FIRM PANEL # 51003CO405D)
100—YEAR FLOODPLAIN
(LOMR 20-03-1246P)
EXTENT OF PROPOSED SDP
®� LIMITS OF CLEARING AND GRADING
CE CONSTRUCTION ENTRANCE
ST SEDIMENT TRAP
DD DIVERSION DIKE
DC DUST CONTROL
SF SILT FENCE
SCALE 1"=30'
30 0 30 60
SCALE IN FEET
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DESIGNED BY:
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P"T11 OF
Jimmy L. Taggart
Lic. No.
4 22841 'r\
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DATE:
03-07-2021
SCALE:
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JOB:
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FILE:
8719
SHEET:
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/3�° % LEGEND
�. oQ�TEEP S 0 A SHOWN HEREPD I THE S.L. \ NOTE: PROPOSED SETTLING BASINS ARE I
�ATM
� e ��oo S ILLI YSIS OF THE ARE I TOPOGRAPHOM A =m DANGEROUS HAZARD, PROCEED WITH I STEEP SLOPES (OVER 25%)
TMP 100-2 CAUTION AROUND THE BASIN PERIMETER,
CROWN ORCHARD COMPANY O yR, FO�M�t ION. THE EX T OF THE CRITICAL SLOPE \ PROTECTION TO BE INSTALLED BY \
ZONING: RA , �o° , R S INCLUDE E SIDE SLOPES OF STOCKPILES, °� OWNER \\ \\ \\ \ r WPO STREAM BUFFER
USE: ORCHARD /� /, ,N° SETTLING B S, OVERBURDEN PLACEMENT OR OTHER \ \ \\I \ L _ J
/ MANMAD TURFS GENERATED FROM THE NORMAL °_ \\\ \\ \
I EXISTING AND PROPOSED TRAVEL WAYS
�� /'p BUSI OPERATIONS OF A QUARRY. � ��' ) \\\ \\ `,\ '\ 11
/�� N 0' SETBACK BASED UPON ASSUMI D0 Pf�ESCRI / _ / --' / \
- PTIVE, ROw FOR Rid , ' " /-- / 100-YEAR FLOODPLAIN
. \ ,-"� t = _ ' (FIRM PANEL # 51003CO405D)
. �/ / HILL ROAD, --- \ \\\ \\ 11 \\i♦ / r/ / I "- q'. -- l % --- /
. '�'O i ( /y /' \ / `\ \\ \ \ 1 1 __./ / i t t��N\"" If -_"__\ -- -- \\ ,----\ \ I \\♦
\ , . / /' , � I` t -- ' ' \\\\ \ It I / '' _ '' / \ V ; --- , --, `I\ ■ ■ 100-YEAR FLOODPLAIN
", i ./ r \ /' '-- \,\ \ \ /' - \ r t-,r-\ / \ - - n '\-�
y ;;1 , / l '- ( -"\�, / „ t, \._ '''----- - ___II \ _\ \ (LOMR 20-03-1246P)
/ -`. / / / / e \\ J ,( ✓% ; !- _ - - _ ----- \\ \�,\\ \ % / -� \ ll I I % ' / ///. \I '` � /`, ,-" J` _•` _ ` \ `i,-ice ' "'t , ` ``-_� \ ■ ■
/ l l l / f - . , 1 I'- ,\. ,\ � , -_, ;7' s s - - - - �, , '` - EXTENT OF PROPOSED SDP
// % / l N ,,.p�t r /' r/ (' /' ''-! f /' -\-` \ \ \ ( ! \1 I /� 1 / / -� '` 1) , 1 L ^� \I `
\\ { I �� r,ij \ -\` / j ; '\\,� \ `\ %i / ,' ���I� r, j" _�• ' ■ . LIMITS OF CLEARING AND GRADING
. <' ' _ / 1 . .€ /) / -t /'' - - � / ,'- / \ .' boo \ _ r ; ,-' , ,r_..J/-.\!t__, '_ /J �1
\ / 1 I 1/J /) L " ", \ ' 1 \\ \" � - j P I ✓ P 88-1 ^''Ic \
\\ - / :__`r`\ i / I ` s - \ / i i /' / //,' / � ✓ri / , I \ M1 ` ' ! r
\, \_ f J, \ L ` - - - ' ' - %%;'%'g'� :. - \ ! f \ ` > ,'1f9ARTlN-MARIETTA - ' Y ,r „
�' ' \/ - , r / '' ,/' ,-' / _ '� i�� " �,) %; I ; ' CORP CONSTRUCTION ``,\ J CE CONSTRUCTION ENTRANCE
. "`_ \ f / S / ) ri'/ t' \ (� / ,/' ' /' // // _ -- -- \^ k (�( ___ i r `\\_/
_" I Y / JJ l f ( \-, ti '' /'/', /' / _ /-•• `.'jlt,,%%t„11,.(y\tt11(` \ P_ -____ I \! I I '__`
. . /r / /-- _ / / s- `',, - - / - 2J / \\, DIVERSION DIKE
//`l \\ / / / f ' l '_.n-�.-, (- ,/-\ -�' /' /'/'/ / / - --�.� / \� IJ-` / I ♦\/ .. Jar,_ _✓,_-,n. rr-_\ ` DD
ON NG RA
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1 \\'t IJI I I I/ \� `� `', ,.. _ ! -/ ------ _ ''/ / // ''/ '/ 'i /' /rr \t 1 \ P rf ('-; ' � \ f I ^' - r D
DUST CONTROL
1r (^``nJ 7 , \ \\ \\r rl I\ „� ___ -- `'r' .._/-^r / / ' l ///� i lI rL dI'I.? / (4 1 \ \t
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PERMANENT SEEDING
`'`\ )J v s - -__ /- ' -/ ;JW ,4MEAM-BUFFER J
. \ , /-`' `` ', t` ^\ .•'' ,- ' --- / - / .�- �� Y--- \ __\ , f` t'.r -, �,`r/ L'-..+
' \ / r f rd; -• - NOTE: AFTER PLANT IS INSTALLED &
Tp TREE PROTECTION
\
. \\. / S � --- TRAVEL WAY IN PLACE, CONTRACTOR (` . a
/ s r'- - - -
.I \\' 1. / / J � t , � --, -_f , , - - - SHALL STABILIZE ALL,AREAS WHICH DRAIN - TMP 88-13B MU MULCH
I \L / r „s. / -, _,I„J ' TO THE SEDIMENT TRAP AND EXCAVATE L MARTIN MARIETTA
1 I I / r' r1 .\-1' -_t THE STILLING BASIN. ONCE STILLING '->_I'-,' MATERIALS INC
-
- I ; \I i ` ; �f 'Ir._^\ '. '_ IN PLACE AND STABL E, I ASS'IS G: RA
/ BASIN IS \ ZONING:
", ! . . USE. VACANT
IN PLACE, REMOVE SEGMENT TRAP AND
\` `" ) ) r " �:.. = RE-ESTABLISH BERM TO''ST4L� ,1`NG BASINS °_ . . .
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SCALE:
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JOB:
19.0032
FILE:
8719
SHEET:
6 OF 12
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SETTLING BASIN COMPARISON
SETTLING BASIN # AREA (SF) VODUME (CY) SETTLING BASIN #
AREA (SF)
VOLUME (CY)
EXISTING SETTLING BASIN #1 1959.02 SF 478.27 CY PROPOSED SETTLING BASIN #1
1970.45 SF
469.76 CY
EXISTING SETTLING BASIN #2 1450.13 SF 336.24 CY PROPOSED SETTLING BASIN #2
1938.73 SF
478.87 CY
TOTAL 3409.15 SF 814.51 CY TOTAL
3909.18 SF
948.63 CY
590
590 590
590
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585
585 585
585
71.76'
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580
580 580
580
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575 575
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570
570 570
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EXISTING SETTLING BASIN #1
PROFILE
EXISTING SETTLING
BASIN #2 PROFILE1"
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595
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79.61'
585 590
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585
580
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585
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575
575 580
580
570
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575
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PROPOSED SETTLING BASIN #1 PROFILE
PROPOSED SETTLING BASIN #2 PROFILE
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Jimmy L. Taggart
Lic. No.
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DATE:
03-07-2021
SCALE:
1" = 30'
JOB:
19.0032
FILE:
8719
SHEET:
/ OF 12
I.
1. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS
WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE.
TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED
AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN
30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT
DORMANT FOR MORE THAN ONE YEAR.
CONTRACTOR SHALL ESTABLISH A STABILIZED SITE, AND NOT ALLOW ANY EROSION WITHIN
THE SITE OR ANY SEDIMENT TO EXIT.
2. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL
BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. THE APPLICANT IS
RESPONSIBLE FOR THE TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL
SOIL STOCKPILES ON SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY
TRANSPORTED FROM THE PROJECT SITE.
SOIL STOCKPILES WILL BE LOCATED ONSITE. EXCESS MATERIAL NOT USED FOR ON SITE
GRADING TO BE HAULED TO AN APPROVED SITE WITH ADEQUATE EROSION CONTROL
PROTECTION.
3. A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT
OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE
CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT, IS UNIFORM,
MATURE ENOUGH TO SURVIVE AND WILL INHIBIT EROSION.
CONTRACTOR SHALL ESTABLISH A VEGETATIVE COVER ON ALL DENUDED AREAS.
4. SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER
MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN
ANY LAND -DISTURBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND
DISTURBANCE TAKES PLACE.
CONTRACTOR TO ESTABLISH PERIMETER CONTROLS AS SHOWN ON ON THE PHASE 1
EROSION CONTROL PLANS AS THE FIRST STEP OF CONSTRUCTION.
5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS,
DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION.
CONTRACTOR SHALL STABILIZE ALL EARTHEN STRUCTURES IMMEDIATELY AFTER
INSTALLATION. CONTRACTOR SHALL INSPECT THOSE STABILIZATION AND EROSION CONTROL
MEASURES AFTER EACH RAINFALL EVENT.
6. SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND CONSTRUCTED BASED
UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY THE TRAP OR BASIN.
SEDIMENT TRAPS ARE NOT USED AS PART OF THE EROSION CONTROL MEASURES FOR
THIS PROJECT.
A. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 CUBIC YARDS
PER ACRE OF DRAINAGE AREA AND THE TRAP SHALL ONLY CONTROL DRAINAGE AREAS
LESS THAN THREE(3.0) ACRES.
B. SURFACE RUNOFF FROM DISTURBED AREAS THAT IS COMPRISED OF FLOW FROM
DRAINAGE AREAS GREATER THAN OR EQUAL TO THREE ACRES SHALL BE CONTROLLED
BY A SEDIMENT BASIN. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT BASIN
SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA. THE OUTFALL SYSTEM
SHALL, AT A MINIMUM, MAINTAIN THE STRUCTURAL INTEGRITY OF THE BASIN DURING A
TWENTY-FIVE YEAR STORM OF 24-HOUR DURATION. RUNOFF COEFFICIENTS USED IN
RUNOFF CALCULATIONS SHALL CORRESPOND TO A BARE EARTH CONDITION OR THOSE
CONDITIONS EXPECTED TO EXIST WHILE THE SEDIMENT BASIN IS UTILIZED.
SEDIMENT BASINS ARE NOT USED AS PART OF THE EROSION CONTROL MEASURES FOR
THIS PROJECT.
7. CUT AND FILL SLOPES SHALL BE DESIGNED AND CONSTRUCTED IN A MANNER THAT WILL
MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING EXCESSIVELY WITHIN ONE
YEAR OF PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE
STABILIZING MEASURES UNTIL THE PROBLEM IS CORRECTED.
THIS APPLIES TO ALL DISTURBED AREAS.
8. CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED
WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL, FLUME OR SLOPE DRAIN
STRUCTURE.
SITE RUN-OFF WILL BE DIRECTED TO MAN-MADE BERM, AND CONVEYED TO APPROVED
SEDIMENT TRAP.
9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER
PROTECTION SHALL BE PROVIDED.
CONTRACTOR SHALL PROVIDE ADEQUATE DRAINAGE OR OTHER PROTECTION IF THIS
OCCURS.
10. ALL STORM SEWER INLETS THAT ARE INSTALLED DURING CONSTRUCTION SHALL BE
PROTECTED SO THAT SEDIMENT -LADEN WATER CANNOT ENTER THE CONVEYANCE SYSTEM
WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE SEDIMENT.
CONTRACTOR TO INSTALL INLET PROTECTION ON ALL STORM SEWER INLETS TO PREVENT
SEDIMENT FROM ENTERING THE PIPES.
11. BEFORE NEWLY CONSTRUCTED STORM WATER CONVEYANCE CHANNELS OR PIPES ARE MADE
OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR
PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL
AND RECEIVING CHANNEL.
CONTRACTOR TO INSTALL OUTLET PROTECTION AND ANY TEMPORARY AND/OR PERMANENT
STABILIZATION MEASURES TO THE RECEIVING CHANNEL PRIOR TO THE STORM SEWER
SYSTEM IS MADE OPERATIONAL.
12. WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO
MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT AND STABILIZE
THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION.
NON -ERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND
COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY
NON -ERODIBLE COVER MATERIALS.
THERE ARE NO LIVE WATERCOURSES WITHIN THE PROJECT SITE.
13. WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN
TWICE IN ANY SIX-MONTH PERIOD, A TEMPORARY VEHICULAR STREAM CROSSING
CONSTRUCTED OF NON -ERODIBLE MATERIAL SHALL BE PROVIDED.
THERE ARE NO LIVE WATERCOURSES WITHIN THE PROJECT SITE.
14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR
CROSSING LIVE WATERCOURSES SHALL BE MET.
THERE ARE NO LIVE WATERCOURSES WITHIN THE PROJECT SITE.
15. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER
WORK IN THE WATERCOURSE IS COMPLETED.
THERE ARE NO LIVE WATERCOURSES WITHIN THE PROJECT SITE.
16. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING
STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA:
A. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME.
B. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES.
C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH
AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER
THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF -SITE PROPERTY.
D. MATERIAL USED FOR BACK FILLING TRENCHES SHALL BE PROPERLY COMPACTED IN
ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION.
E. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS.
F. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH.
THIS APPLIES TO ALL UTILITY INSTALLATION OPERATIONS INCLUDING WATER, SEWER,
POWER, CABLE OR GAS.
17. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS,
PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR
TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED
OR PUBLIC ROAD SURFACE, THE ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE
END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR
SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET
WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER.
CONTRACTOR SHALL MAKE PROVISIONS TO KEEP ADJACENT ROADS CLEAN FROM SOIL
BUILD-UP.
18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN
30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO
LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM AUTHORITY.
TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION
OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER
EROSION AND SEDIMENTATION.
CONTRACTOR SHALL STABILIZE SITE, AND OBTAIN INSPECTOR APPROVAL PRIOR TO
REMOVING ANY EROSION CONTROL MEASURES.
19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE
PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN
VOLUME, VELOCITY AND PEAK FLOW RATE OF STORM WATER RUNOFF FOR THE STATED
FREQUENCY STORM OF 24-HOUR DURATION IN ACCORDANCE WITH THE FOLLOWING
STANDARDS AND CRITERIA
A. CONCENTRATED STORM WATER RUNOFF LEAVING A DEVELOPMENT SITE SHALL BE
DISCHARGED DIRECTLY INTO AN ADEQUATE NATURAL OR MAN-MADE RECEIVING
CHANNEL, PIPE OR STORM SEWER SYSTEM. FOR THOSE SITES WHERE RUNOFF IS
DISCHARGED INTO A PIPE OR PIPE SYSTEM, DOWNSTREAM STABILITY ANALYSES AT THE
OUTFALL OF THE PIPE OR PIPE SYSTEM SHALL BE PERFORMED
B. ADEQUACY OF ALL CHANNELS AND PIPES SHALL BE VERIFIED USING THE VSMP
CHANNEL PROTECTION:CRITERIA. STORMWATER DISCHARGES ARE CLASSIFIED INTO ONE
OF THREE TYPES OF CHANNEL.
a."MANMADE STORMWATER CONVEYANCE SYSTEM" MEANS A PIPE, DITCH, VEGETATED
SWALE, OR OTHER STORMWATER CONVEYANCE SYSTEM CONSTRUCTED BY MAN
EXCEPT FOR RESTORED STORMWATER CONVEYANCE SYSTEMS OR,
a.a.THE MANMADE STORMWATER CONVEYANCE SYSTEM SHALL CONVEY THE
POST- DEVELOPM ENTPEAK FLOW RATE FROM THE TWO-YEAR EVENT WITHOUT
CAUSING EROSION OF THE SYSTEM DETENTION OF THE STORMWATER OR
DOWNSTREAM IMPROVEMENTS MAY BE INCORPORATED INTO THE APPROVED
LAND -DISTURBING ACTIVITY TO MEET THIS CRITERIA AT THE DISCRETION OF THE
STORMWATER PROGRAM ADMINISTRATIVE AUTHORITY.
a.b.THE PEAK DISCHARGE REQUIREMENTS FOR CONCENTRATED STORMWATER FLOW
TO NATURAL STORMWATER CONVEYANCE SYSTEMS SHALL BE MET.
Q Developed <= I.F. * (Q Pro-Dev * RV Pro-Dev)/RV Developed
I.F. = 0.8 FOR SITES > 1 ACRE; I.F. = 0.9 FOR SITES <= 1 ACRES
UNDER NO CONDITION SHALL Q Developed > Q Pro-Dev
NOR SHALL Q Developed BE REQUIRED TO BE LESS THAN THAT
Q Fored * RV Pro-Dev)/RV Developed
OR IN ACCORDANCE WITH ANOTHER METHODOLOGY THAT IS DEMONSTRATED BY
THE VSMP AUTHORITY TO ACHIEVE EQUIVALENT RESULTS AND IS APPROVED BY
THE BOARD.
b."NATURAL STORMWATER CONVEYANCE SYSTEM" MEANS THE MAIN CHANNEL OF A
NATURAL STREAM AND THE FLOOD -PRONE AREA ADJACENT TO THE MAIN CHANNEL
OR,
c."RESTORED STORMWATER CONVEYANCE SYSTEM" MEANS A STORMWATER CONVEYANCE
SYSTEM THAT HAS BEEN DESIGNED AND CONSTRUCTED USING NATURAL CHANNEL
DESIGN CONCEPTS. RESTORED STORMWATER CONVEYANCE SYSTEMS INCLUDE THE
MAIN CHANNEL AND THE FLOOD-
c.a. THE DEVELOPMENT SHALL BE CONSISTENT, IN COMBINATION WITH OTHER
STORMWATER RUNOFF,WITH THE DESIGN PARAMETERS OF THE RESTORED
STORMWATER CONVEYANCE SYSTEM THAT IS FUNCTIONING IN ACCORDANCE WITH
THE DESIGN OBJECTIVES.
c.b.THE PEAK DISCHARGE REQUIREMENTS FOR CONCENTRATED STORMWATER FLOW
TO NATURAL STORMWATER CONVEYANCE SYSTEMS SHALL BE MET. SEE
19(B)(1)(b).
1. OWNER SHALL POST SURETY BONDS FOR CONSTRUCTION, EROSION & SEDIMENT CONTROL.
2. CONTRACTOR SHALL OBTAIN PERMITS TO WORK WITHIN STATE RIGHT-OF-WAY (VDOT
LAND -USE PERMIT). BONDING FOR WORK WITHIN THE VDOT RIGHT-OF-WAY MAY BE
REQUIRED TO OBTAIN THE PERMIT.
3. CONTRACTOR SHALL COORDINATE WITH OWNER TO OBTAIN VSMP PERMITS, AS REQUIRED
BY THE STATE DEPARTMENT OF ENVIRONMENTAL QUALITY (DEQ).
4. CONTRACTOR SHALL OBTAIN LAND DISTURBANCE PERMIT FROM THE COUNTY OF ALBEMARLE
PRIOR TO BEGINNING CONSTRUCTION.
5. A PRE -CONSTRUCTION MEETING WITH THE ENGINEER, THE CERTIFIED LAND DISTURBER,
AND THE ENVIRONMENTAL INSPECTOR MAY ALSO BE REQUIRED. ALLOW 72 HOURS FOR
COORDINATION AND SCHEDULING OF PRE -CONSTRUCTION MEETING.
PROJECT DESCRIPTION
THIS PROJECT IS FOR THE REMOVAL OF THE EXISTING ASPHALT PLANT AND THE INSTALLATION
OF A NEW ASPHALT PLANT. LIMITS OF DISTURBANCE IS 2.4 ACRES
EXISTING SITE CONDITIONS
THE EXISTING SITE IS A WORKING ASPHALT PLANT THAT OPERATES IN A LEASED AREA WITHIN
THE PARCEL FOR THE RED HILL QUARRY. THE EXISTING LEASE AREA IS A GRAVEL COVERED
AREA WITH EXISTING STOCKPILES OF AGGREGATE THAT IS USED IN THE MANUFACTURE OF THE
ASPHALT MIX.
ADJACENT AREAS
TO THE WEST OF THE LEASE AREA IS AN EXISTING CREEK THAT IS ASSOCIATED WITH A 100"
STREAM BUFFER AND FLOODPLAIN THAT ARE LOCATED WITHIN THE DEVELOPMENT AREA.
FURTHER TO THE WEST IS A VACANT PARCEL OWNED BY MARTIN MARIETTA, THE OWNERS OF
THE QUARRY. THE VACANT PARCEL IS CURRENTLY COVERED BY TREES, TO THE NORTH OF
THE LEASE AREA IS VACANT LAND LOCATED ON THE QUARRY PARCEL. IT HAS NOT BEEN
DISTURBED BY QUARRY OPERATIONS AS OF THIS DATE. TO THE EAST OF THE LEASE AREA IS
THE ACTIVE QUARRY OPERATIONS THAT SUPPLY AGGREGATE TO THE ASPHALT PLANT. TO THE
SOUTH OF THE LEASE AREA IS ROUTE 708, RED HILL ROAD.
OFF -SITE AREAS
SOME GRADING AND CONSTRUCTION ACTIVITY WILL BE TAKING PLACE OUTSIDE THE EASTERN
BOUNDARY OF THE LEASE AREA. THESE ACTIVITIES SHOULD BE COORDINATED WITH THE
QUARRY OPERATIONS.
SOILS
,fi,Q PITS/QUARRY
OPEN EXCAVATION FOR GRANITE, GREENSTONE, AND/OR SOAPSTONE MAPPED AREAS INCLUDE
POOLS OF WATER AND SPOILS PILES. HYDROLOGIC GROUP -UNRANKED. SURFACE RUNOFF AND
EROSION HAZARD -UNRANKED. THE EASTERN SLOPE AREA BETWEEN THE S.L. WIWAMSON
LEASE AREA AND THE MARTIN MARIETTA QUARRY IS AN AREA OF SPOILS PILES.
77 RIVERVIEW-CHEWACLA COMPLEX (0-2X)
COMPLEX OF DEEP. NEARLY LEVEL, WELL DRAINED AND SOMEWHAT POORLY DRAINED SOILS
ON FLOODPLAINS ALONG SMALLER STREAMS. PERMEABILITY OF SOILS IS MODERATE AND
AVAILABLE WATER CAPACITY IS HIGH. RUNOFF IS SLOW AND EROSION HAZARD LOW.
HYDROLOGIC SOIL GROUP: B
STRUCTURAL PRACTICES
1. SAFETY FENCE (3.01) - A TEMPORARY SAFETY FENCE SHALL BE ERECTED TO PROHIBIT
PUBLIC ACCESS TO THE PROJECT AREA AND AROUND SENSITIVE AREAS TO PROTECT THEM
FROM CONSTRUCTION TRAFFIC.
2. TEMPORARY CONSTRUCTION ENTRANCE (3.02) - A TEMPORARY CONSTRUCTION ENTRANCE
SHALL BE INSTALLED AT THE SITE ENTRANCE AS SHOWN ON THE EROSION AND SEDIMENT
CONTROL PLAN.
3. ROAD STABILIZATION (3.03) - ACCESS ROADS, PARKING AREAS, AND OTHER ON -SITE
VEHICLE TRANSPORTATION ROUTES SHALL BE STABILIZED WITH STONE IMMEDIATELY AFTER
GRADING.
4. SILT FENCE BARRIER (3.05) - SILT FENCE BARRIERS WILL BE INSTALLED TO FILTER
RUNOFF FROM SHEET FLOW AS SHOWN ON THE EROSION AND SEDIMENT CONTROL PLAN.
5. SUPER SILT FENCE BARRIER - WIRE -REINFORCED SILT FENCE BARRIER WILL BE
INSTALLED TO FILTER RUNOFF FROM SHEET FLOW AS SHOWN ON THE EROSION AND
SEDIMENT CONTROL PLAN.
6. INLET PROTECTION (3.07) - INLET PROTECTION WILL BE INSTALLED AT ALL PROPOSED
STORM DRAIN INLETS INSTALLED PRIOR TO FINAL STABILIZATION OF THE SITE.
7. CULVERT INLET PROTECTION (3.08) - SEDIMENT FILTER INSTALLED TO PREVENT SEDIMENT
FROM ENTERING, ACCUMULATING IN OR BEING TRANSFERRED BY A CULVERT.
8. TEMPORARY DIVERSION DIKES (3.09) - A SYSTEM OF DIVERSION DIKES TO DIRECT FLOW
INTO THE SEDIMENT TRAP. WILL BE INSTALLED AS SHOWN ON THE EROSION AND
SEDIMENT CONTROL PLAN.
9. CLEAN -WATER DIVERSION DIKES - A SYSTEM OF DIVERSION DIKES TO DIRECT THE FLOW
OF CLEAN OFFSITE WATER AWAY FROM THE SITE WILL BE INSTALLED AS SHOWN ON THE
EROSION AND SEDIMENT CONTROL PLAN.
10. TEMPORARY SEDIMENT TRAP (3.13) - A TEMPORARY SEDIMENT TRAP IS TO BE
CONSTRUCTED IN CONJUNCTION WITH CULVERT INLET PROTECTION. CALCULATIONS FOR THE
SEDIMENT TRAP ARE SHOWN WITH THE EROSION AND SEDIMENT CONTROL DETAILS.
11. TEMPORARY SEDIMENT BASIN (3.14) - A TEMPORARY SEDIMENT BASIN IS TO BE
CONSTRUCTED AS SHOWN ON THE EROSION AND SEDIMENT CONTROL PLAN. CALCULATIONS
FOR THE SEDIMENT BASIN ARE SHOWN WITH THE EROSION AND SEDIMENT CONTROL DETAIL
FOR THE SEDIMENT BASIN.
12. STORMWATER CONVEYANCE CHANNEL (3.17) - A SERIES OF CHANNELS SHALL BE
CONSTRUCTED TO PROVIDE FOR THE CONVEYANCE OF CONCENTRATED RUNOFF TO A
RECEIVING CHANNEL WITHOUT DAMAGE FROM EROSION. TYPICAL DITCH SECTIONS &
CALCULATIONS ARE SHOWN ON THE PLAN.
13. OUTLET PROTECTION (3.18) - OUTLET PROTECTION WILL BE INSTALLED AT THE END OF
ALL STORM SEWER PIPES. CALCULATIONS FOR THE OUTLET PROTECTION ARE SHOWN WITH
THE EROSION AND SEDIMENT CONTROL DETAILS. THE RIPRAP SHOULD BE CHECKED
PERIODICALLY TO ENSURE SCOURING IS NOT OCCURRING BENEATH FABRIC UNDERLINING
OF THE RIPRAP LAYER.
14. CHECK DAM (3.20) - ROCK CHECK DAMS WILL BE INSTALLED IN THE PROPOSED
DITCHES TO REDUCE THE VELOCITY OF CONCENTRATED FLOWS WHICH WILL HELP. IN THE
ESTABLISHMENT OF THE GRASS LINING. AFTER THE UPSLOPE AREA IS STABILIZED, THE
CHECK DAMS MAY BE REMOVED AND PROPERLY DISPOSED IN ACCORDANCE WITH VECSH
REGULATIONS.
15. LEVEL SPREADER (3.21) - LEVEL SPREADER WILL BE INSTALLED AT THE END OF
DIVERSIONS OR DIKES TO CONVERT CHANNEUZED FLOW TO SHEET FLOW TO AVOID
CAUSING EROSION.
16. TURBIDITY CURTAIN (3.27) - A FLOATING GEOTEXTILE MATERIAL WHICH MINIMIZES
SEDIMENT TRANSPORT FROM A DISTURBED AREA ADJACENT TO OR WITHIN A BODY OF
WATER.
VEGETATIVE PRACTICES
1. SURFACE ROUGHENING (3.29) - ALL AREAS WITH A GRADE STEEPER THAN 3:1 SHALL BE
STAIR -STEP GRADED OR GROOVED (PLATE 3,29-4) TO AID IN GRASS ESTABLISHMENT,
INCREASE INFILTRATION, AND TO SLOW RUNOFF VELOCITIES.
2. TOPSOIUNG & STOCKPILING (3.30) - TOPSOIL WILL BE STRIPPED FROM AREAS TO BE
GRADED AND STOCKPILED FOR LATER USE. STOCKPILES ARE TO BE STABILIZED WITH
TEMPORARY VEGETATION OR TO HAVE SILT FENCE INSTALLED ALONG THE LOWER
PERIMETER TO PROTECT DOWNSTREAM AREAS.
3. TEMPORARY SEEDING (3.31) - AREAS NOT BROUGHT TO FINAL GRADE FOR A PERIOD OF
MORE THAN 14 DAYS SHALL BE STABILIZED WITH A TEMPORARY SEED MIXTURE
ACCEPTABLE FOR THAT TIME OF YEAR. CRIMPING, PUNCH ROLLER -TYPE ROLLERS, OR
TRACK WALKING MAY BE USED TO INCORPORATE STRAW MULCH INTO THE SOIL ON
SLOPES IF STRAW IS TO BE USED.
4. PERMANENT SEEDING (3.32) - AREAS BROUGHT TO FINAL GRADE OR THOSE
CONSTRUCTION AREAS THAT WILL REMAIN DORMANT FOR YEAR OR MORE SHALL BE
STABILIZED WITH A PERMANENT SEED MIXTURE ACCEPTABLE TO THAT TIME OF YEAR.
PREPARE SURFACE WITH APPROVED TREATMENT AND ADDITIVES PRIOR TO APPLYING SEED.
5. MULCH (3.35) - PLANT RESIDUES OR OTHER SUITABLE MATERIALS SHALL BE APPLIED TO
DISTURBED SURFACES TO PREVENT EROSION AND REDUCE OVERLAND FLOW VELOCITIES.
THIS PRACTICE SHOULD BE APPLIED TO ALL SEEDING OPERATIONS, OTHER PLANTER
MATERIALS WHICH DO NOT PROVIDE ADEQUATE SOIL PROTECTION BY THEMSELVES, AND
BARE AREAS WHICH CANNOT BE SEEDED DUE TO THE SEASON BUT WHICH STILL NEED
PROTECTION TO PREVENT SOIL LOSS. CRIMPING, PUNCH ROLLER -TYPE ROLLERS, OR
TRACK WALKING MAY BE USED TO INCORPORATE STRAW MULCH INTO THE SOIL ON
SLOPES IF STRAW IS TO BE USED.
6. EROSION CONTROL BLANKETS (3.36) - EROSION CONTROL BLANKETS IN CONJUNCTION
WITH PERMANENT SEEDING WILL BE INSTALLED ON ALL SLOPES STEEPER THAN 3:1
FOLLOWING GRADING. EROSION CONTROL BLANKETS WILL ALSO BE INSTALLED IN DITCHES
WHERE POTENTIAL EROSIVE VELOCITIES MAY EXIST AS DETERMINED BY ENGINEERING
CALCULATIONS. THIS WILL PROTECT FROM RILL AND GULLY EROSION.
7. TREE PROTECTION (3.38) - THE TREE FENCE BARRIER WILL BE INSTALLED TO PROTECT
THE TREES OUTSIDE OF THE LIMITS OF DISTURBANCE AS SHOWN ON THE EROSION AND
SEDIMENT CONTROL PLAN.
8. DUST CONTROL (3.39) - DUST CONTROL METHODS MUST BE USED TO REDUCE THE
AMOUNT OF AIRBORNE DUST DURING ALL PHASES OF CONSTRUCTION WHERE SOIL IS
EXPOSED OR DISTURBED.
MANAGEMENT STRATEGIES
1. CONSTRUCTION WILL BE SEQUENCED SO THAT GRADING OPERATIONS CAN BEGIN AND END
AS QUICKLY AS POSSIBLE.
2. THE CONSTRUCTION ENTRANCE AND PERIMETER EROSION CONTROL MEASURES SUCH AS
TREE PROTECTION AND SILT FENCE SHALL BE INSTALLED AS THE FIRST STEP OF
DISTURBANCE.
3. SEDIMENT TRAPPING MEASURES SHALL BE INSTALLED WITH PERIMETER SILT FENCE PRIOR
TO ANY GRADING AND SHALL BE SEEDED AND MULCHED IMMEDIATELY FOLLOWING
INSTALLATION.
4. THE SEDIMENT TRAPS SHALL BE CHECKED FOR SEDIMENT ACCUMULATION AFTER EVERY
RUNOFF PRODUCING STORM EVENT. SEDIMENT SHOULD BE REMOVED WHEN IT REACHES
ONE-HALF OF THE DESIGN VOLUME OF THE WET STORAGE.
5. TEMPORARY SEEDING OR OTHER STABILIZATION METHODS, SUCH AS BASE AGGREGATE WILL
FOLLOW IMMEDIATELY AFTER REACHING FINAL GRADES.
6. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO ENSURE THAT A GOOD STAND IS
MAINTAINED. AREAS SHOULD BE FERTILIZED AND RE -SEEDED AS NEEDED TO ESTABLISH
GROWTH.
7. THE JOB SUPERINTENDENT SHALL BE RESPONSIBLE FOR THE INSTALLATION AND
MAINTENANCE OF ALL EROSION AND SEDIMENT CONTROL PRACTICES.
8. DURING FINE GRADING OPERATIONS, MAINTAIN ALL DIVERSION DITCHES TO THE SEDIMENT
TRAP(S) AND/OR SEDIMENT BASIN(S). THE SEDIMENT TRAP(S) AND/OR BASIN(S) SHALL
REMAIN FUNCTIONAL THROUGHOUT INSTALLATION OF THE STORM SEWER INLETS, PIPES,
AND OUTFALLS.
9. AFTER BEING NOTIFIED BY THE EROSION AND SEDIMENT CONTROL ADMINISTRATOR, THE
TEMPORARY EROSION AND SEDIMENT CONTROLS CAN BE CLEANED UP OR REMOVED, AND
THE SEDIMENT TRAPS CAN BE FILLED IN AND SEEDED, THEREBY REDIRECTING DRAINAGE
TO THE PERMANENT FACILITIES.
10. THE STORMWATER MANAGEMENT FACILITIES SHOULD BE CHECKED REGULARLY BY THE
HOMEOWNERS ASSOCIATIONS TO ENSURE THAT THEY ARE STRUCTURALLY SOUND AND HAVE
NOT BEEN DAMAGED BY EROSION. THE EMERGENCY SPILLWAY SHALL BE CHECKED
REGULARLY TO ENSURE THAT ITS LINING IS WELL ESTABLISHED AND EROSION RESISTANT.
GRASS SHALL BE KEPT MOWN BELOW A HEIGHT OF 15" AND THE OUTLET SHOULD BE
CHECKED FOR CLOGGING. THE DAM SECTION SHALL BE KEPT FREE OF SAPLINGS OR
TREES.(REFER TO THE ADDITIONAL MAINTENANCE SPECIFICATIONS)
PERMANENT STABILIZATION
ALL AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED WITH STRAW & SEED
IMMEDIATELY FOLLOWING FINISHED GRADE. SEEDING SHALL BE DONE WITH KENTUCKY 31 TALL
FESCUE IN ACCORDANCE TO STANDARD AND SPECIFICATION 3.32, PERMANENT SEEDING, OF
THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. ANY FERTILIZER AND LIME
APPLICATIONS SHALL BE IN ACCORDANCE WITH SOIL TEST RESULTS. ALL SEEDED AREAS WILL
BE STRAW MULCHED TO PROTECT AGAINST RILL EROSION AND TO PRESERVE SOIL MOISTURE
THAT WILL ENHANCE SEED GERMINATION. CRIMPING, PUNCH ROLLER -TYPE ROLLERS, OR TRACK
WALKING MAY BE USED TO INCORPORATE STRAW MULCH INTO THE SOIL ON SLOPES IF STRAW
IS TO BE USED.
EROSION CONTROL MAINTENANCE
1. IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE CHECKED DAILY
AND AFTER EACH SIGNIFICANT RAINFALL. THE FOLLOWING ITEMS WILL BE CHECKED IN
PARTICULAR:
2. THE CONSTRUCTION ENTRANCE SHALL BE CHECKED DAILY FOR SOIL BUILDUP. IF THE
ENTRANCE BECOMES CLOGGED WITH SOIL AND FAILS TO PREVENT TRANSPORTATION OF
SOIL ONTO THE ROADWAY, ADDITIONAL STONE, REPLACEMENT OF STONE, OR A WASH -RACK
MAY BE REQUIRED.
3. SILT FENCE SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND AT LEAST DAILY
DURING PROLONGED RAINFALL. CLOSE ATTENTION SHALL BE PAID TO THE REPAIR OF
DAMAGED SILT FENCE RESULTING FROM END RUNS AND UNDERCUTTING. SHOULD THE
FABRIC ON A SILT FENCE DECOMPOSE OR BECOME INEFFECTIVE PRIOR TO THE END OF
THE EXPECTED USABLE LIFE AND THE BARRIER STILL BE NECESSARY, THE FABRIC SHALL
BE REPLACED PROMPTLY. SEDIMENT DEPOSITS SHOULD BE REMOVED AFTER EACH STORM
EVENT. SEDIMENT DEPOSITS MUST BE REMOVED WHEN DEPOSITS REACH APPROXIMATELY
ONE-HALF THE HEIGHT OF THE BARRIER. ANY SEDIMENT DEPOSITS REMAINING IN PLACE
AFTER THE SILT FENCE IS NO LONGER REQUIRED SHALL BE DRESSED TO CONFORM WITH
THE EXISTING GRADE, PREPARED, AND SEEDED.
4. DIVERSION DIKES SHALL BE INSPECTED AFTER EVERY STORM AND REPAIRS MADE TO THE
DIKE, FLOW CHANNEL, OUTLET, OR SEDIMENT TRAPPING FACILITY AS NECESSARY. ONCE
EVERY TWO WEEKS, WHETHER A STORM EVENT HAS OCCURRED OR NOT, THE MEASURE
SHALL BE INSPECTED AND REPAIRS MADE IF NEEDED. DAMAGES CAUSED BY
CONSTRUCTION TRAFFIC OR OTHER ACTIVITY MUST BE REPAIRED BEFORE THE END OF
EACH WORKING DAY.
5. STORMWATER CONVEYANCE CHANNELS:
5.1. GRASS LINED CHANNELS - DURING THE INITIAL ESTABLISHMENT, GRASS LINED CHANNELS
SHOULD BE REPAIRED IMMEDIATELY AND RE-ESTABLISHED IF NECESSARY. AFTER GRASS
HAS BECOME ESTABLISHED, THE CHANNEL SHOULD BE CHECKED PERIODICALLY TO
DETERMINE IF THE GRASS IS WITHSTANDING FLOW VELOCITIES WITHOUT DAMAGE. IF THE
CHANNEL IS TO BE MOWED, IT SHOULD BE DONE IN A MANNER THAT IT WILL NOT
DAMAGE THE GRASS.
5.2. RIPRAP-UNED CHANNELS - RIPRAP LINED CHANNELS SHOULD BE CHECKED PERIODICALLY
TO ENSURE THE SCOUR IS NOT OCCURRING BENEATH FABRIC UNDERLINING OF THE
RIPRAP LAYER. THE CHANNEL SHOULD ALSO BE CHECKED TO DETERMINE THE STONES
ARE NOT DISLODGED BY LARGE FLOWS.
5.3.IF SEDIMENT IS DEPOSITED IN A GRASS -LINED CHANNEL, IT SHOULD BE REMOVED
PROMPTLY TO PREVENT DAMAGE TO THE GRASS. SEDIMENT DEPOSITED IN A RIPRAP
CHANNEL SHOULD BE REMOVED WHEN IT REDUCES THE CAPACITY OF THE CHANNEL.
6. CHECK DAMS SHALL BE CHECKED FOR SEDIMENT ACCUMULATION AFTER EVERY RUNOFF
PRODUCING STORM EVENT. SEDIMENT SHOULD BE REMOVED WHEN IT REACHES ONE-HALF
OF THE ORIGINAL HEIGHT OF THE MEASURE. REGULAR INSPECTIONS SHALL BE MADE TO
INSURE THE CENTER OF EACH DAM IS LOWER THAN THE EDGES. EROSION CAUSED BY
HIGH FLOWS AROUND THE EDGES OF THE DAM SHOULD BE CORRECTED IMMEDIATELY.
7. THE EARTHEN EMBANKMENTS SHALL BE CHECKED REGULARLY TO ENSURE THAT IT IS
STRUCTURALLY SOUND AND HAS NOT BEEN DAMAGED BY EROSION OR CONSTRUCTION
EQUIPMENT.
8. THE STORMWATER MANAGEMENT FACILITIES SHOULD BE CHECKED REGULARLY BY THE
HOMEOWNERS ASSOCIATIONS TO ENSURE THAT THEY ARE STRUCTURALLY SOUND AND HAVE
NOT BEEN DAMAGED BY EROSION.
9. THE EMERGENCY SPILLWAY SHALL BE CHECKED REGULARLY TO ENSURE THAT ITS LINING
IS WELL ESTABLISHED AND EROSION RESISTANT. GRASS SHALL BE KEPT MOWN BELOW A
HEIGHT OF 15" AND THE OUTLET SHOULD BE CHECKED FOR CLOGGING.
10. THE DAM SECTION SHALL BE KEPT FREE OF SAPLINGS OR TREES.(REFER TO THE
ADDITIONAL MAINTENANCE SPECIFICATIONS)
11. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO ENSURE THAT A GOOD STAND IS
MAINTAINED. AREAS SHOULD BE FERTILIZED AND RE -SEEDED AS NEEDED.
SEQUENCE OF CONSTRUCTION
PHASE I:
1. AFTER OBTAINING ALL REQUIRED PERMITS THE CONTRACTOR SHALL COORDINATE A
PRE -CONSTRUCTION MEETING, ALLOWING 72 HOURS FOR ITS COORDINATION.
2. CONTRACTOR INSTALL CONSTRUCTION ENTRANCE AND TREE PROTECTION AS FIRST STEP IN
CONSTRUCTION.
3. CLEARING AND GRUBBING SHALL FIRST BE LIMITED TO AREA NECESSARY TO INSTALL
PERIMETER CONTROL DEVICES.
4. INSTALL ADDITIONAL ENVIRONMENTAL CONTROLS: SUCH AS SILT FENCE, SUPER SILT FENCE,
DIVERSION DIKES & SEDIMENT TRAP.
5. BEGIN REMOVAL OF THE EXISTING ASPHALT PLANT
6. AFTER REMOVAL OF EXISTING PLANT, GRADING ACTIVITIES CAN START TO CONSTRUCT THE
RETAINING WALLS AROUND THE FEED BINS.
PHASE II:
1. BEGIN EXCAVATION, GRADING & INSTALLATION ACTIVITIES FOR RETAINING WALLS
2. BEGIN NEW ASPHALT PLANT INSTALLATION
3. CONVERT TEMPORARY SEDIMENT TRAP TO SETTLING BASIN AND INSTALL NEW SETTLING
BASIN.
4. FINE GRADE SITE TO PROPOSED GRADES
5. PAVE PROPOSED ASPHALT AREAS
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FILE:
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I�
CE CON
STONE CONSTRUCTION ENTRANCE
70' MIN.
A
FILTER CLOTH'' 6" MIN.I AI
SIDE ELEVATION
GROUND
70' MIN.
B WASHRACK
� I (OPTIONAL)
12' MIN.
10,
L VDDT #1 POSITIVE DRAINAGE
COURSE AGGREGATE B TO SEDIMENT
TRAPPING ➢EVICE
• MUST EXTEND FULL WIDTH
OF INGRESS AND EGRESS PLAN VIEW
OPERATION
12' MIN.
FILTER CLOTH
REINFORCED CONCRETE
SECTION A -A
6'-7"
UIA
SECTION B-B
EXISTING
PAVEMENT
5:1
MOUNTABLE BERM
(OPTIONAL)
T IN.
EXISTING
PAVEMENT
10' MIN.
3" MIN.
3" MIN.
SPACE
SOURCE: ADAPTED from 1983 Mariland Standards for con erosion ono aealmem 1,unem, DIMTu.YJ„V - -
SF SILT FENCE
CONSTRUCTION OF A SILT FENCE
(WITH WIRE SUPPORT)
1. SET POSTS AND EXCAVATE A 4"X4" 2. STAPLE WIRE FENCING TO THE POSTS.
TRENCH UPSLOPE ALONG THE LINE
OF POSTS.
/ Id66(t
3. ATTACH THE FILTER FABRIC TO THE WIRE 4. BACKFILL AND COMPACT THE
FENCE AND EXTEND IT INTO THE TRENCH. EXCAVATED SOIL.
RDITRCR:• Adanted from
�enlood do Iyant
FLOW /yy
EXTENSION OF FABRIC AND WIRE INTO THE TRENCH.
PLATE. 3.05-1
TS TEMPORARY SEEDING PLANT
SEEDING RATES AND DATES
FOR THE PIEDMONT AREA
SEEDING RATE (PER
2/15 TO
5/1 TO 9/1
911 TO
SPECIES
AC.)
4/30
11/15
OATS (Avena sativa)
3 BU. (UP TO 100 LBS., NOT
X
LESS THAN 50 LBS.)
RYE ** (Secale cereale)
2 BU. (UP TO 110 LBS., NOT
X
X
LESS THAN 50 LBS.)
GERMAN MILLET (Setaria
50 LBS.
X
italica)
ANNUAL RYEGRASS * (Loliurl
60 LBS.
X
X
multi-florum)
WEEPING LOVEGRASS
15 LBS.
X
(Eragrostis curvula)
KOREANLESPEDEZA*
25LBS.
X
X
(Lespedeza stipulacea)
* MAY BE USED AS A COVER CROP WITH SPRING CROP
** MAY BE USED AS A COVER CROP WITH WINTER CROP
X MAY BE PLANTED BETWEEN THESE DATES
MAY NOT BE PLANTED BETWEEN THESE DATES
TP TREE PROTECTION
DRIP LINE
PROTECTIVE DEVICE
MAXIMUM LIMITS �vti1 �/
CLEARING AND GRADING n
PROPOSED GRADING \ w r
N r
y� •
MIN. 5' "` l ••�"--
•yr, WHERE DRIPLINE
IS LESS THAN
5' :20
CONSTRUCTION OPERATIONS RELATIVE
TO THE LOCATION OF PROTECTED TREES
PS PERMANENT SEEDING Mix
FOR THE PIEDMONT AREA
TOTAL LBS, PER ACRE
MINIMUM CARE LAWN - COMMERCIAL OR RESIDENTIAL 175-200 LBS.
- KENTUCKY 31 OR TURF -TYPE TALL FESCUE 95-100%
- IMPROVED PERENNIAL RYE GRASS 0-5%
- KENTUCKY BLUEGRASS
0-5°/D
HIGH MAINTENANCE LAWN 200-250 LBS.
KENTUCKY 31 OR TURF -TYPE TALL FESCUE 100%
GENERAL SLOPE (3:1 OR LESS)
- KENTUCKY 31 FESCUE 128 LBS.
- RED TOP GRASS 2 LBS.
- SEASONAL NURSE CROP* 20 LBS.
TOTAL 150 LBS.
LOW -MAINTENANCE SLOPE (STEEPER THAN 3:1)
KENTUCKY 31 FESCUE 108 LBS.
- RED TOP GRASS 2 LBS.
- SEASONAL NURSE CROP* 20 LBS.
- CROWN VETCH** 20 LBS.
TOTAL 150 LBS.
*USE SEASONAL NURSE CROP IN ACCORDANCE WITH SEEDING DATES AS STATED BELOW:
FEBRUARY 16TH THROUGH APRIL 30TH....... ..... ANNUAL RYE
MAY 1ST THROUGH AUGUST 15TH .............. FOXTAIL MILLET
AUGUST 16TH THROUGH OCTOBER 31ST...... ...... ANNUAL RYE
NOVEMBER 1ST THROUGH FEBRUARY 15TH .......... ANNUAL RYE
* SUBSTITUTE SERICEA LESPEDEZA FOR CROWNVETCH EAST OF FARMVILLE, VA (MAY
THROUGH SEPTEMBER USE HULLED SERICEA, ALL OTHER PERIODS, USE UNHULLED SERICEA.)IF
FLATPEA IS USED IN LIEU OF CROWNVETCH, INCREASE RATE TO 30 LBS./ACRE. ALL LEGUME SEED
MUST BE PROPERLY INOCULATED. WEEPING LOUEGRASS MAY BE ADDED TO ANY SLOPE OR LOW
MAINTENANCE MIX DURING WARMER SEEDING PERIODS; ADD 10-20 LBSJACRE IN MIXES,
1' VANIABLE
ORIGINA. VARIABL[
GROUND
ELEV. 10
6ICU.YD/ACRE VARIABLE
N
6/CU. ED/ACRE
M
(EXCAVATED) FILTER CLOTH ORIGINAL
GROUND
ELEV.
'SEE PLATE 3.13-1 --COARSE AGGREGATE CLASS I RIPRAR
CROSS SECTION OF OUTLET
CLASS I Ell LENGTH ON FEET) =
6 X DRAINAGE AiEA
ED AG.)
s_ DIVERSION
DIKL. COABSEAREGATE /
� EXCCAAVAATEI� / FILTER CLOTH
/ .-COARSE AGGREGATE SHALT. DE VDO�A35� 5
OUTLET (PERSPECTIVE VIEW)
TEMPORARY SEDIMENT TRAP
ST NOTUASCALE 3.13-2
Mu MULCHING
TABLE 3.35-A
ORGANIC MULCH MATERIAIS AND APPLICATION RATES
RATES:
MULCHES:
NOTE$:
Per Acre
Per 1000 sq. ft.
Straw or Hay
1 k - 2 tons
70 - 90 lbs.
Free from weeds and coarse
(Minimum 2
matter, Must be anchored.
tons for
Spread with mulch blower
winter cower)
or by hand.
Fiber Mulch
Minimum
35 lbs.
Do not use as mulch for
1500 lbs.
winter cover or during hot,
dry periods.' Apply as
slurry.
Com Stalks
4 - 6 tons
185 - 275 lbs.
Cut or shredded in 4-6'
lengths. Air-dried. Do not
use in fine turf areas. Apply
with mulch blower or by
hand.
Wood Chips
4 - 6 tons
185 - 275 lbs.
Free of coarse matter. Air-
dried. Treat with 12 lbs
nitrogen per ton. Do not
use in fine turf areas. Apply
with mulch blower, chip
handler, or by band.
Bark Chips
50 - 70 cu.
1-2 cu. yds.
Free of coarse matter. Air -
or
yds.
dried. Do not use in fine
Shredded
turf areas. Apply with
Bark
mulch blower, chip handler,
or by hand.
When fiber mulch is the only available mulch during periods when straw
should be used, apply at a minimum rate of 20M lbs./ac. or 45 lbs./1000 sq. ft.
Source: Va. DSWC
MINIMUM TOP WIDTH (W�
REQUIRED FOR SEDIMENT
TRAP EMBANKMENTS
ACCORDING TO HEIGHT OF
EMBANKMENT "F.EET)
u _ Ho w
1.5
0.5
2.0
2.0
1.0
2.0
2.5
1.5
2.5
3.0
2.0
2.5
3.5
2.5
3.0
4.0
3.0
3.0
4.5
3.5
4.0
5.0
4.0
4.5
ORIGINAL
GROUND
ELEV.
Source: Va. DSWC
Plate 3.13-1
TEMPORARY DIVERSION .DIKE
Source- Va. DSWC
Compacted Soil
'4,5' min. ----�
Plate 3.09-1
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DATE:
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SCALE:
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19.0032
FILE:
8719
SHEET:
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DATE:
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SCALE:
1" = 500'
JOB:
19.0032
FILE:
8719
SHEET:
10 OF 12
STREAM BUFFER CALCULATIONS:
THE INWARD 50' OF THE STREAM BUFFER WILL BE
RESTORED AND MITIGATED AS SHOWN HEREON.
THE MITIGATION PLANTINGS WILL BE PROVIDED FOR THE
IMPACTS TO THE LANDWARD 50' OF THE STREAM BUFFER.
MITIGATION AREAS OUTLINED HEREON WILL BE RESTORED BY
REMOVING ALL UNSUITABLE MATERIALS, PROVIDING SOIL
AMENDMENTS WHERE TOPSOIL HAS BEEN REMOVED PRIOR
TO THE INSTALLATION OF THE MITIGATION PLANTINGS.
STREAM BUFFER MITIGATION REPLANTING
IMPACT AREA 1 40,793
MITIGATION AREA REQUIRED = 81,586 SF
MITIGATION AREA PROVIDED = 45,625 SF (1.05 AC)*
(*ALL AREAS INSIDE THE INWARD 50' STREAM BUFFER HAVE
BEEN REPLANTED EXCEPT FOR THE TREE -SAVE AREAS
WITHIN THE S.L. WILLIAMSON LEASE AREA)
MIXED VEGETATION MITIGATION AREAS
REQUIRED: 700 CONTAINER -GROWN SEEDLINGS PER ACRE
MITIGATION AREA A 29,892 SF (0.69 AC)
PLANTING REQUIRED: 480
PLANTING PROVIDED
MITIGATION AREA B 4,777 SF (0.11 AC)
PLANTING REQUIRED: 77
PLANTING PROVIDED: 77
MITIGATION AREA C 10,956 SF (0.25 AC)
PLANTING REQUIRED: 176
PLANTING PROVIDED: 176
733 TOTAL PLANTS REQUIRED (733 PLANTS PROVIDED)
PLANT SCHEDULE PLANTING AREA#A
QNTY.
I BOTANICAL NAME
COMMON NAME
CANOPY TREES
15
Acerrubrum
RED MAPLE
13
Diospyros virginiana
PERSIMMON
14
Liquidamberstraclflua
SWEETGUM
12
Liriodendron tulipifera
TULIP POPLAR
13
Quercus palustris
PIN OAK
131
Platanus occidentalis
SYCAMORE
UN DERSTORY TREEES
15
Alnus serrulata
SMOOTH ALDER
15
Amelanchierlaevis
ALLEGHENYSERVICEBER
19
Cercis canadensis
REDBUD
15
Cornusflorida
DOGWOOD
17
Juniperus virginiana
EASTERN RED CEDAR
17
Magnolia virginiana
SWEETBAY MAGNOLIA
19
Oxydendron arboreum
SOURWOOD
15
Pinus virginiana
VIRGINIA PINE
14
Sassafrasalbidum
SASSAFRAS
14
Viburnum lentago
NANNYBERRY
SHRUBS
19
Hamamelis virginiana
WITCH HAZEL
19
Hydrangea arborescens
WILD HYDRANGEA
21
Iteavirginica
VIRGINIASWEETSPIRE
17
Lindera benzoin
NORTHERN SPICEBUSH
25
Physocarpus opulifolius
COMMON NINEBARK
17
Rhus glabra
SMOOTH SUMAC
19
Salix discolor
PUSSY WILLOW
17
Sambucus Canadensis
AMERICAN ELDERBERRY
19
Spiraea latifolia
MEADOWSWEET
23
Vaccinium angustifolium
LOWBUSH BLUEBERRY
23
Viburnum dentatum
SOUTHERN ARROWWOC
r 21
Viburnum prunifolium
I BLACKHAW VIBURNUM
COMMENTS
CONTAINER -GROWN
SEEDLINGS (PLANTING
PATTERNS TO BE MIXED AND
RANDOM TO MIMIC
NATURAL LANDSCAPES,
SPACING TO BE WON CENTER
GENERALLY)
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QNTY.
I BOTANICAL NAME
COMMON NAME
COMMENTS
CANOPY TREES
CONTAINER -GROWN
SEEDLINGS (PLANTING
PATTERNS TO BE MIXED AND
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NATURAL LANDSCAPES,
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7
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SYCAMORE
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SHRUBS
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9
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ISOUTHERN WAX MYRTLE
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ICOMMON NINEBARK
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I BLACKHAW VIBURNUM
PLANT SCHEDULE PLANTING AREA#C
QNTY. I
BOTANICAL NAME
COMMON NAME
CANOPY TREES
9
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RED MAPLE
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PIN OAK
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SYCAMORE
U NDERSTORY TREEES
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9
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REDBUD
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10
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SOURWOOD
11
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INANNYBERRY
SHRUBS
11
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9
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WITCH HAZEL
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NORTHERN SPICEBUSH
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SOUTHERN WAX MYRTLE
11
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COMMON NINEBARK
91
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IBLACKHAW VIBURNUM
COMMENTS
CONTAINER -GROWN
SEEDLINGS (PLANTING
PATTERNS TO BE MIXED AND
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100-YEAR FLOODPLAIN
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1. IF IT IS NECESSARY TO KILL OFF ANY INVASIVE UNDESIRED SPECIES WITH HERBICIDES,
SITE PREPARATION SHOULD BEGIN IN THE FALL PRIOR TO THE TREE PLANTING AND
SEEDING. UNDESIRED SPECIES MAY INCLUDE MULTIFLORA ROSE, HONEYSUCKLE AND OTHER
SPECIES DEEMED TO BE INVASIVE BY THE VIRGINIA DEPARTMENT OF CONSERVATION AND
RECREATION. THE HERBICIDE SHOULD BE APPLIED BY A LICENSED SPRAY TECHNICIAN
USING A NON -TOXIC, BIODEGRADABLE HERBICIDE TO CONTROL UNDESIRABLE VEGETATION.
2. FOR AREAS THAT ARE STABILIZED WITH EXISTING GRASS COVER, MOW AND AERATE AREA
PRIOR TO PLANTING.
3. FOR AREAS THAT ARE DISTURBED AND NOT STABILIZED WITH EXISTING GRASS COVER,
AREA SHALL BE PREPARED AND ORDERED BY TILLING OR SCARIFYING TO A MINIMUM
DEPTH OF 2". TEST SOIL PH; THE PH LEVEL WITHIN THE GENERALIZED ROOT ZONE OF
STREAM BUFFER MITIGATION PLANTINGS SHOULD BE TESTED AND BROUGHT TO WITHIN A
RANGE OF 6.0 TO 7.0. THE PH ADJUSTMENTS CAN BE MADE USING POWDERED LIME.
4. VEGETATION SHOULD BE PLANTED AS SOON AS THE AMBIENT SOIL TEMPERATURE IS
ABOVE 41" F THROUGH MAY.
5. PLANTS SHALL REMAIN UPRIGHT DURING TRANSPORT/STORAGE. PLANTS STORED ONSITE
MUST BE PLANTED WITHIN THREE DAYS OF DELIVERY. IN ADDITION, THE PLANTS SHOULD
BE STORED IN A PROTECTED AREA UPON ARRIVAL IN ORDER TO SHADE THEM FROM
EXPOSURE TO THE SUN AND DRYING WIND. TREES AND/OR SHRUBS THAT CANNOT BE
PLANTED IMMEDIATELY UPON DELIVERY SHALL BE KEPT WELL SHADED, PROTECTED, AND
WATERED. ALL DAMAGED PLANTS SHALL BE REMOVED FROM STORAGE WHEREUPON THEY
MAY BE USED AS MULCH UNLESS THEY ARE DISEASED.
6. ALL PLANTING PATTERNS SHALL BE RANDOM AND MIXED TO MIMIC NATURAL LANDSCAPES.
7. HOLES EXCAVATED FOR THE TREES SHALL BE 3-TIMES THE CONTAINER DIAMETER OR AT
LEAST 6" WIDER THAN THE BARE ROOT DIAMETER. THE HOLES MAY BE EXCAVATED EITHER
BY HAND SHOVEL OR BY POWER AUGER. EXCESS SOIL GENERATED FROM THE
EXCAVATIONS SHALL BE DISPOSED OF RANDOMLY OVER THE SITE.
8. THE PLANTS SHALL BE SET AT THE SAME DEPTH THAT THEY WERE GROWN IN AND THE
TRUNK SHOULD BE SITUATED NEARLY PLUMB.
9. AVOID PLANTING SEEDLINGS IN EXTREMELY DRY, HOT OR WINDY CONDITIONS, HEAT AND
WIND CAN QUICKLY DRY OUT LEAVES AND ROOTS.
10. WATER THE SOIL AROUND THE SEEDLINGS IMMEDIATELY AFTER PLANTING.
11. AREAS COMPACTED BY FOOT OR VEHICLE TRAFFIC SHALL BE TILLED OR AERATED PRIOR
TO RESEEDING AREA AFTER TREES AND/OR SHRUBS HAVE BEEN PLANTED.
12. BROADCAST THE SUGGESTED SEED MIX BY HAND OR MACHINE EVENLY OVER THE
PLANTING AREA AND FOLLOW WITH A LIGHT RAKING OR ROLLING TO ACHIEVE GOOD
SEED -TO -SOIL CONTACT. COVER WITH A LIGHT LAYER OF STRAW MULCH.
13. NO STORAGE OF HERBICIDES OR OTHER AGRICULTURAL CHEMICALS SHALL BE PERMITTED
NEAR THE PLANT STORAGE OR MITIGATION AREAS.
14. ALL WOODY PLANTS AND SEED MIXES SPECIFIED ARE NATIVE SPECIES. ANY AND ALL
PLANT OR SEEDING SUBSTITUTIONS MUST BE NATIVE. CONTRACTOR TO VERIFY THAT ANY
SUBSTITUTION IS A NATIVE EQUIVALENT AND NOT ON THE VIRGINIA DEPARTMENT OF
CONSERVATION AND RECREATION INVASIVE SPECIES PLANT LIST.
M
M
STREAM -BUFFER MITIGATION MAINTENANCE NOTES
WOODY VEGETATION AREAS
1. VISUALLY INSPECT PLANTING AREAS ON AN ANNUAL BASIS.
A. RESEED BARE SPOTS WITH A MIXTURE OF GRASS, PERENNIAL AND/OR WOODY
VEGETATION SEEDS. USE NATIVE SPECIES ONLY.
B. IDENTIFY WEED PROBLEMS WITHIN THE PLANTING AREA.
a. CONTROL WEEDS AS SOON AS POSSIBLE BEFORE THEY GROW OUT OF CONTROL.
WEED CONTROL METHODS WILL VARY, BUT MAY INCLUDE REMOVAL BY HAND,
MOWING, SELECTIVE USE OF HERBICIDES, MULCHING, AND OTHER INTEGRATED
VEGETATION MANAGEMENT (IVM) TECHNIQUES.
b. CONTINUE WEED CONTROL UNTIL WOODY PLANTS ARE FULLY ESTABLISHED IN THE
PLANTING AREA, NORMALLY 2 TO 3 YEARS AFTER PLANTING.
C. INSPECT AREA FOR EVIDENCE OF HIGH DEER BROWSE PRESSURE OR RODENT
POPULATIONS.
a. IF THERE IS EVIDENCE OF HIGH MORTALITY RATE, CONSIDER AVAILABLE OPTIONS
FOR CONTROLLING PEST PROBLEM SUCH AS FENCING, TREE SHELTERS, AND TREE
CAGES TO REPELLENTS, INCLUDING IN -SOIL SYSTEMIC TABLETS, FOLIAR SPRAYS
OF MANY TYPES AND ACTIVE INGREDIENTS.
D. CHECK SURVIVAL IN LATE FALL AFTER SECOND YEAR TO ESTABLISH SURVIVAL RATE.
MINIMAL SURVIVAL IS 490 PLANTS/ACRE OR A 70% SURVIVAL RATE.
a. IF THE SURVIVAL RATE IS NOT AT THE SPECIFIED MINIMUM AND REPLACEMENT
PLANTINGS ARE WARRANTED, PLANTING AREAS SHOULD BE SURVEYED TO TRY TO
IDENTIFY THE LIKELY CAUSE OF THE PLANT MORTALITY. SOURCES OF THE
MORTALITY SHOULD BE CONTROLLED AND MITIGATED FOR PRIOR PLANTINGS
REPLACEMENTS.
E. CHECK FOR NATURAL REGENERATION. WHERE ABUNDANT, LIMIT FURTHER MOWING
UNLESS SITE IS PRONE TO VOLES OR INVASIVE PLANTS.
F. IF TREE TUBES ARE USED, REGULARLY INSPECT THEM TO MAKE SURE THEY ARE NOT
TOO TIGHT ON THE TREE, THAT SMALL ANIMALS OR INSECTS HAVE NOT BUILT NESTS
INSIDE THE TUBES, AND THAT THE TREE IS GROWING PROPERLY. REPLACE OR
REMOVE THE TUBES AS NEEDED.
G. IN YEARS 3-5, PRUNE AND THIN TREES AND SHRUBS TO ENSURE ADEQUATE
GROWING SPACE AND OPTIMAL GROWTH RATES.
2. VISUALLY INSPECT PLANTING AREAS AFTER MAJOR STORM EVENTS.
A. IF STORM DAMAGE IS PRESENT, FIX EROSION DAMAGE THEN REPLANT AREA AT THE
MINIMUM PLANTING RATE FROM THE ORIGINAL PLANTING PLAN OR RESEED
MANUFACTURES' RECOMMENDED APPLICATION RATE
3. IF POSSIBLE, AVOID WORKING IN THE RIPARIAN AREA BETWEEN APRIL 15 AND AUGUST 15.
DURING THIS TIME PERIOD, DISTURBANCE CAN BE DETRIMENTAL TO A VARIETY OF
WILDLIFE, BECAUSE OF MATING AND NEWLY BORN WILDLIFE.
GRASS AND PERENNIAL PLANTING AREAS
1. VISUALLY INSPECT PLANTING AREAS ON AN ANNUAL BASIS.
A. RESEED BARE SPOTS WITH A MIXTURE OF GRASS AND/OR PERENNIAL SEEDS. USE
NATIVE SPECIES ONLY.
B. IDENTIFY WEED PROBLEMS WITHIN THE PLANTING AREA.
a. CONTROL WEEDS AS SOON AS POSSIBLE BEFORE THEY GROW OUT OF CONTROL.
WEED CONTROL METHODS WILL VARY, BUT MAY INCLUDE REMOVAL BY HAND,
MOWING, SELECTIVE USE OF HERBICIDES, MULCHING, AND OTHER INTEGRATED
VEGETATION MANAGEMENT (IVM) TECHNIQUES.
2. MOW ON AN ANNUAL BASIS TO CONTROL WOODY VEGETATION GROWTH.
3. VISUALLY INSPECT PLANTING AREAS AFTER MAJOR STORM EVENTS.
A. IF STORM DAMAGE IS PRESENT, FIX EROSION DAMAGE THEN REPLANT AREA AT THE
MINIMUM PLANTING RATE FROM THE ORIGINAL PLANTING PLAN OR RESEED
MANUFACTURES' RECOMMENDED APPLICATION RATE
4. IF POSSIBLE, AVOID WORKING IN THE RIPARIAN AREA BETWEEN APRIL 15 AND AUGUST 15.
DURING THIS TIME PERIOD, DISTURBANCE CAN BE DETRIMENTAL TO A VARIETY OF
WILDLIFE, BECAUSE OF MATING AND NEWLY BORN WILDLIFE.
PLANT SCHEDULE SEEDING MIX
nn+„ Rn+onirn1 Nnma Common Name Comment
- 28.00%
Sorghastrum nutans
Indiangrass
Seeding Rate -
20lbs per acre with cover crop
that depends on time of
planting (see manufacturers
recommendations)
PLANTING AREA#A
13.7lbs Seed Mix
PLANTING AREA#B
2.2 Ibs Seed Mix
PLANTING AREA #C
5.0lbs Seed Mix
27.50%
Schizachyrium scoparium
Little Bluestem
20.00%
Elymus virginicus
Virginia Wildrye
5.00%
Chasmanthium latifolium
River Oats
5.00%
Panicum clandestinum
Deertongue
5.00%Panicumrigidulum
RedtopPanicgrass
3.00%
Rudbeckia hirta
Blackeyed Susan
2.00%
Chamaecrista fasciculata
Partridge Pea
1.009/.
Chamaecrista nictitans
Sensitive Pea
1.00%
Eupatorium perfoliatum
Boneset
1.00%
Helenium autumnale
Common Sneezeweed
1.00%
Helenium flexuosum
Purplehead Sneezeweed
0.50%
Vernonia noveboracensis
New York Ironweed
Ernst Conservation Seeds, Inc. Seed Mix - ERNMX-862 VA Southern Piedmont riparian Iviix or tgwvaler
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LEGEND
CRITICAL SLOPES (OVER 25%)
1 WPO STREAM BUFFER
L_J
EXISTING AND PROPOSED TRAVEL WAYS
® STREAM BUFFER REPLANTING AREA
IIIIIIII I i IIIIIIII 100-YEAR FLOODPLAIN
(LOMR 20-03-1246P)
M IIIIIIIIIIIIIIIII 0EXTENT OF PROPOSED SDP
SCALE 1 "=30'
30 0 30 60
SCALE IN FEET
`r � \--- 7/` \\ 100 YR. \�/#\ j0
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DATE:
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19.0032
FILE:
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12 OF 12
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