HomeMy WebLinkAboutWPO201400052 Plan - Approved 2014-06-02E &SC MEASURES
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CONSTRUCTION ENTRANCE:
E &SC STD. 3.02
SF
SILT FENCE
E &SC STD. 3.05
CULVERT INLET PROTECTION
E &SC STD. 3.08
C
STORMWATER CONVEYANCE CHANNEL
E &SC STD. 3.17
RR
RIP RAP
E &SC STD. 3.19
TO
TOPSOILING
E &SC STD. 3.30
TS
TEMPORARY SEEDING:
E &SC STD. 3.31
PS
PERMANENT SEEDING:
E &SC STD. 3.32
MULCHING
E &SC STD. 3.35
BIM
SOIL STABILZATION BLANKETS & MATTING
E &SC STD. 3.36
DC
DUST CONTROL
E &SC STD. 3.39
SOILS INFO:
SOILS GROUP 36B - HAYESVILLE LOAM, 2 TO 7 % SLOPES
SOILS GROUP 36C - HAYESVILLE LOAM, 7 TO 15 % SLOPES
SOILS GROUP 37D3 - HAYESVILLE CLAY LOAM, 15 TO 25% SLOPES
GENERAL EROSION & SEDIMENT 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 7:00 AM TO 9:00 PM.
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15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAN MAINTAINS LATERAL SUPPORT, OR ORDER O MINIMIZE ANY HAZARD TO PERSONS,
PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE O 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 RYE GRASS 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.
ED AT 9 LBS 1000SF
L AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED 0 /
18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICU TU RA ,
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 RYE GRASS 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 REPAIRED
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 DIKES 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.
CONSTRUCTION SEQUENCE
1. CLEARLY MARK LIMITS, OF WORK.
2. UTILIZE EXISTING CONSTRUCTION ENTRANCE AND INSTALL CULVERT INLET PROTECTION AT EXISTING CULVERT UNDER REYNARD DRIVE.
3. INSTALL SILT FENCE AT THE TOE OF SLOPE OF ALL DISTURBED AREAS AS WELL AS AROUND ALL MATERIAL STOCKPILES.
4. INSTALL STORMWATER CONVEYANCE CHANNEL TO EXISTING REYNARD DRIVE CULVERT.
5. CONTINUE BUILDING CONSTRUCTION AND YARD GRADING.
6. ESTABLISH VEGETATION ON ALL NEWLY DISTURBED TURF AREAS WITH PERMANENT SEEDING, SODDING, MULCHING, FERTILIZATION, AND LIMING. AMEND SOILS WHERE
NEEDED.
7. ONCE SITE HAS BEEN DEEMED STABILIZED BY COUNTY INSPECTOR, REMOVE ALL TEMPORARY EROSION CONTROL MEASURES.
MAINTENANCE NOTES
IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAINFALL. THE FOLLOWING ITEMS WILL BE
CHECKED IN PARTICULAR.
1. THE INLET PROTECTION WILL BE CHECKED REGULARLY FOR SEDIMENT CLEANOUT.
2. THE GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP WHICH WOULD PREVENT DRAINAGE, IF THE GRAVEL IS CLOGGED BY SEDIMENT, IT SHALL
BE REMOVED AND CLEANED OR REPLACED.
3. THE SILT FENCE BARRIER WILL BE CHECKED REGULARLY FOR UNDERMINING OR DETERIORATION OF THE FABRIC. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL OF
SEDIMENT DEPOSITION REACHES HALF WAY TO THE TOP OF THE BARRIER.
4. THE SEEDED AREAS WILL BE CHECKED REGULARLY TO ENSURE THAT A GOOD STAND IS MAINTAINED. AREAS SHALL BE FERTILIZED AND RESEEDED AS DETERMINED
NECESSARY BY VIRGINIA TECH SITE DEVELOPMENT DEPARTMENT.
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/CU X/ERT INLET,/PROTECTION
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LIMITS OF �
/ DISTURBANCE
(38,000 SF)
SOILS
GROUP
36C /
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36C
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2"
2"
DRAINAGE SWALE DIRECTS FLOW
TO SEDIMENT BASIN
70' MIN.
r 3" SM -2A ASPHALT TOP COURSE
A�
2% 2%
DIVERSION DITCH J A
SIDE ELEVATION
EXISTING GROUND
70' MIN.
ASPHALT PAVED WASHRACK
2%
12' MIN.
2% 2%
DIVERSION DITCH MIN.
WIDTH AT DESIGN WATER
ELEVATION IS 4.0'
MUST EXTEND FULL WIDTH
OF INGRESS AND EGRESS
OPERATION
POSITIVE DRAINAGE
TO SEDIMENT
TRAPPING DEVICE
EXISTING
PAVEMENT
6" VDOT #21A
AGGREGATE BASE
T
10' MIN.
EXISTING
PAVEMENT
10 MIN.
PLAN VIEW
SET 1%2' WATER HYDRANT WITH
FROST PROOF HYDRANT 3'
70' MIN. ABOVE GRADE AND 4' OFF
EDGE OF PAVEMENT
2 %--
NOTE: A MINIMUM WATER TRAP OF 1" IS REQUIRED
WITH A MINIMUM WASH HOSE DIA. OF 1.5"
SECTION A -A
PAVED CONSTRUCTION ENTRANCE
JUNCTION SLOT
CHECK SLOT*
TERMINAL FOLD
LAP JOINT 2" MIN.
(JUTE MESH ONLY)
TAMP FIRMLY
ANCHOR SLOT
(V
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JUNCTION SLOT
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TARAD
NOTES
ANCHOR SLOT
APPROXIMATELY 200 STAPLES REQUIRED
PER 100 SQ. YDS. OF MATERIAL ROLL.
ANCHOR SLOTS, JUNCTION SLOTS &
CHECK SLOTS TO BE BURIED 6" TO 12 ".
12" MAX. 4:1 OR FLATTER
6" MAX. STEEPER THAN 4:1
EDGE AND END JOINT:
TO BE SNUGLY ABUTT
(JUTE MESH WILL HAV
STAPLED LAP JOINT IN
LIEU OF EDGE JOINT)
5' MAX. 4:1 OR FLAT
3' MAX. STEEPER TI
*CHECK SLOT—
I" TO 2"
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SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA
Total Lbs.
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VAR.
VAR.
Iq
.11
11
STAPLE FORMED FROM NO. 11 STEEL WIRE
8" STAPLE MIN. LENGTH FOR SANDY SOIL.
6" STAPLE MIN. LENGTH FOR OTHER SOIL.
PLAN VIEW
STAPLING DIAGRAM
*CHECK SLOTS AT MIN.
50' C -C INTERVALS;
NOT REQ.'D WITH ALL
"COMBINATION" BLANKETS
TERMINAL FOLD T^nAM c
IRMLY
SOIL STABILIZATION BLANKET
TYPICAL TREATMENT - 1 INSTALLATION CRITERIA
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SOURCE: Adapted from Installation of Straw and Fabric Filter Barriers for Sediment Control,
Sherwood & Wyant PLATE. 3.05 -1
1. SET POSTS AND EXCAVATE A 4 "X4" 2. STAPLE WIRE FENCING TO THE POSTS.
TRENCH UPSLOPE ALONG THE LINE
OF POSTS.
FLOW
3. ATTACH THE FILTER FABRIC TO THE WIRE
FENCE AND EXTEND IT INTO THE TRENCH.
4. BACKFILL AND COMPACT THE
EXCAVATED SOIL.
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EXTENSION OF FABRIC AND WIRE INTO THE TRENCH.
CONSTRUCTION OF A SILT FENCE
(WITH WIRE SUPPORT)
SOURCE: ADAPTED from VDOT Standard Sheets and Va. DSWC PLATE. 3.08 -1
DISTANCE IS 6' MINIMUM IF FLOW
IS TOWARD EMBANKMENT
FLOW
*OPTIONAL STONE COMBINATION
1.0' 1.5'
FLOW
2.5'
* VDOT #3, #357, #5, #56 OR #57 COARSE AGGREGATE --CLASS I RIPRAP
TO REPLACE SILT FENCE IN " HORSESHOE " WHEN
HIGH VELOCITY OF FLOW IS EXPECTED
CULVERT INLET PROTECTION
DETAIL (N.T.S.)
STORMWATER CONVEYANCE CHANNEL
OVERLAP FABRIC
CLASS i
FILTER r rur�iv
RIP RAP SPILLWAY
2' MIN.
«< 1992
132
TABLE 3.32 -D
SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA
Total Lbs.
Pgr,Acre
Minimum Care Lawn
- Commercial or Residential
175 -200 lbs.
- .Kentucky 31 or Turf -Type Tall Fescue
95 -100%
- Improved Perennial Ryegrass
0 -5%
- Kentucky Bluegrass
0=5%
High- Maintenance Lawn
200 -250 lbs.
- Kentucky 31 or Turf -Type Tall Fescue
100 %n
General Slope (3:1 or less)
- Kentucky 31 Fescue
128. lbs.
- Red Top Grass
2 lbs.
- Seasonal Nurse Crop *
20 lbs.
150 lbs,
Low- Maintenance Slope, (,Steeper than 3:1)
- Kentucky 31 Fescue
1.08 lbs.
- Red Top Grass
2 lbs.
- Seasonal Nurse Crop *
20 lbs.
- Crownvetch * *
20 lbs.
150 lbs.
* Use seasonal nurse crop in accordance with seeding dates as stated below:
February, loth through April ...........
.. ...... Annual Rye
May 1st through August 15th
Fox tall Millet
August 16th through October ...
Annual Rye
November through February 15th
Winter Rye
* * Substitute Sericea lespedeza for Crownvetch
east of Farmvilie, >.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 Lovegrass may be added to any slope
or low - maintenance mix during warmer seeding periods;
;add 10-20 lbs. /acre in
mixes.
111-303
PERMANENT SEEDING
ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS
QUICK REFERENCE FOR ALL REGIONS
RATE
PLANTING DATES SPECIES (LBS /ACRE)
SEPT. 1- FEB. 15 50/50 MIX OF ANNUAL
RYEGRASS & CEREAL
WINTER RYE 50 -100
FEB. 16 - APR. 30 ANNUAL RYEGRASS 60 -100
MAY 1 - AUG. 31 GERMAN MILLET 50
TEMPORARY SEEDING
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