HomeMy WebLinkAboutWPO200700062 Plan - E&S 2007-10-04'CONTRACTOR'S COORDINATION RESPONSIBILITIES
1. THE CONTRACTOR IS REQUIRED TO OBTAIN ANY /ALL PERMITS REQUIRED FOR
CONSTRUCTION OF THESE PLANS.
2. ANY TIME WORK IS PERFORMED OFF -SITE OR WITHIN AN EXISTING EASEMENT, THE
CONTRACTOR IS TO NOTIFY THE HOLDER OF SAID EASEMENT AS TO THE NATURE OF
PROPOSED WORK AND TO FOLLOW ANY GUIDLELINES OR STANDARDS WHICH ARE
ASSOCIATED WITH OR REFERENCED IN THE RECORDED EASEMENT.
3. THE CONTRACTOR IS TO CHECK THAT ALL EASEMENTS, LETTERS OF PERMISSION,
ETC, ARE RECORDED /OBTAINED PRIOR TO THE START OF ANY CONSTRUCTION.
4. CONTRACTOR TO VERIFIY ALL SITE PLANS AND PROFILES AND DETAILS FOR
CONSISTENCY AND IF CONFLICTS EXISTS, CONTACT ENGINEER FOR CLARIFICATION
AND /OR DIRECTION. INTERPRETATION DETERMINED BY CONTRACTOR SHALL BE DONE
AT HIS /HER OWN RISK.
5. THE CONTRACTOR IS TO VERIFY THAT THE RELOCATION OF ALL EXISITING UTILITIES
IN CONFLICT WITH PROPOSED WORK HAS BEEN COMPLETED INCLUDING UTILITY POLES.
6. CONTRACTOR SHALL COMPLY WITH FENCING AND TREE PRESERVATION SIGNAGE
REWIRED BY ALBEMARLE COUNTY CODE.
7. CONTRACTOR SHALL NOT RELY SOLELY ON ELECTRONIC VERSIONS OF PLANS,
SPECIFICATIONS, AND DATA FILES THAT ARE OBTAINED FROM THE DESIGNERS, BUT
SHALL VERIFY LOCATION OF PROJECT FEATURES IN ACCORDANCE WITH THE PAPER
COPIES OF THE PLANS AND SPECIFICATIONS THAT ARE SUPPLIED AS PART OF THE
CONTRACT DOCUMENTS.
8. CONTRACTOR SHALL COMPLY WITH ALL WETLAND PERMIT REQUIREMENTS (IF A
PERMIT EXISTS).
9. CONTRACTOR SHALL BE RESPONSIBE FOR ALL RELOCATIONS, (UNLESS OTHERWISE
NOTED ON PLANS) INCLUDING, BUT NOT LIMITED TO, ALL UTILITIES, STORM
DRAINAGE, SIGNS, TRAFFIC SIGNALS & POLES, ETC. AS REQUIRED. ALL WORK SHALL
BE IN ACCORDANCE WITH GOVERNING AUTHORITIES REQUIREMENTS AND PROJECT
SITEWORK SPECIFICATIONS AND SHALL BE APPROVED BY SUCH. ALL COST SHALL BE
INCLUDED IN BASE BID.
10. THIS PROJECT DISTURBS MORE THAN ONE ACRE OF LAND AND FALLS WITHIN THE
VIRGINIA STORMWATER MANAGEMENT PROGRAM (VSMP), GENERAL CONSTRUCTION
PERMIT (GCP) PROGRAM AS ADMINISTERED BY THE VIRGINIA DEPARTMENT OF
CONSERVATION AND RECREATION (DCR) UNDER THE JURISDICTION OF THE EPA.
PRIOR TO THE START OF CONSTRUCTION, THE CONTRACTOR SHALL FILE A GCP
NOTICE OF INTENT WITH THE DCR AND PREPARE A STORMWATER PREVENTION PLAN
IN ACCORDANCE WITH THE VSMP REGULATIONS.
11. CONTRACTOR SHALL COORDINATE WITH ALL UTILITY COMPANIES FOR INSTALLATION
REQUIREMENTS AND SPECIFICATIONS.
GENERAL CONSTRUCTION NOTES
GENERAL EROSION AND SEDIMENT CONTROL NOTES
ES -1: Unless otherwise indicated, all vegetative and structural erosion and
sediment control practices 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.
ES -2: The plan approving authority must be notified one week prior to the
preconstruction conference, one week prior to the commencement of the land
disturbing activity, and one week prior to the final inspection.
ES -3: All erosion and sediment control measures are to be placed prior to or
as the first step in clearing.
ES -4: A copy of the approved erosion and sediment control plan shall be
maintained on -site at all times.
ES -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.
ES -6: The contractor is responsible for the installation of any additional
erosion control measures necessary to prevent erosion and sedimentation as
determined by the plan approving authority.
ES -7: All disturbed areas are to drain to approved sediment control measures
at all times during land disturbing activities and during site development until
iinal stabilization is achieved.
ES -8: During dewatering operations, water will be pumped into an approved
fltering device.
ES -9: The contractor shall inspect all erosion control measures periodically and
cfter each runoff - producing rainfall event. Any necessary repairs or cleanup to
maintain the effectiveness of the erosion control devices shall be made
immediately.
ES -10: The developer shall reserve the right to install, maintain, remove and /or
convert to permanent structures all erosion control measures required by this
plan regardless of the sale of any lot.
ES -11: Temporary Fill Diversion is to be installed per Std. & Spec. 3.10, and it
is to be maintained daily until adequate stormwater measures are installed and
positive flow to basin is provided.
ES -12: All entrances except for the approved construction entrances shall be
blocked in such a manner as to not allow access to the site.
ES -13: No building permits shall be issued for any lot containing E &SC
rr,easures until the site is deemed stabilized enough for the removal of the
measure.
TEMPORARY SEEDING SPECIFICATIONS.
February 16 through April 30:
Use Annual Ryegross at 60 to 100 Ibs /acre.
May 1 through August 31:
Use German Millet at 50 Ibs /acre.
September 1 through February 15:
Use a 50/50 Mix of Annual Rye and Winter Rye at 50 to 100 Ibs /acre.
PERMANENT SEEDING SPECIFICATIONS:
February 16 through April 30:
Kentucky 31 Fescue - 128 Ibs /acre; Red Top Grass - 2 Ibs /acre; Annual
Rye - 20 Ibs /acre. Add 20 Ibs /acre Indian grass when slopes are greater
than 3:1.
May 1 through August 15:
Kentucky 31 Fescue - 128 Ibs /acre; Red Top Grass - 2 Ibs /acre; Foxtail
Millet - 20 Ibs /acre. Add 20 Ibs /acre Indian grass when slopes are
greater than 3:1.
August 16 through October 31:
Kentucky 31 Fescue - 128 Ibs /acre; Red Top Grass - 2 Ibs /acre; Annual
Rye - 20 Ibs /acre. Add 20 Ibs /acre Indian grass on slopes greater than
November 1 through February 15:
Kentucky 31 Fescue - 128 Ibs /acre; Red Top Grass - 2 Ibs /acre; Winter
Rye - 20 Ibs /acre. Add 20 Ibs /acre Indian grass on slopes greater than
MULCHING SPECIFICATIONS:
Straw or hay at a rate of 2 tons /acre. Must be anchored. Spread_ with
mulch blower or by hand.
LIME AND FERTILIZER SPECIFICATIONS:
Lime and fertilizer needs should be determined by soil tests. Soil tests
may be preformed by the Cooperative Extension Service Soil Testing
Laboratory at VPI &SU, or by a reputable commercial laboratory. Information
concerning the State Soil Testing Laboratory is available from County
Extension Agents. Under unusual conditions where it is not possible to
obtain a soil test, the following soil amendments will be applied:
For Permanent Seeding: Seeded areas shall be limed at a rate of 2 tons
per acre, and fertilized at a rate of 1,000 Ibs. per acre of 10 -20 -10 (10
Ibs. per 1,000 square feet) or equivalent.
For Temporary Seeding: Seeded areas shall be limed at a rate of 2 tons
per acre, and fertilized at a rate of 600 Ibs. per acre of 10 -20 -10 (10
Ibs. per 1,000 square feet) or (equivalent.
1. WORK WITHIN THE LOCAL RIGHTS -OF -WAY SHALL CONFORM TO LOCAL MUNICIPAL STANDARDS. WORK WITHIN STATE RIGHTS -OF -WAY SHALL CONFORM TO THE LATEST EDITION OF THE VIRGINIA DEPARTMENT OF
TRANSPORTATION STANDARDS AND SPECIFICATIONS FOR HIGHWAYS AND BRIDGES.
2. 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 ACCURATELY REFLECT THE REQUIREMENTS OF THE PERMIT. WHERE ANY DISCREPANCIES OCCUR THE REQUIREMENTS OF THE PERMIT SHALL GOVERN.
3. ALL MATERIALS AND CONSTRUCTION METHODS SHALL CONFORM TO CURRENT SPECIFICATIONS AND STANDARDS OF VDOT UNLESS OTHERWISE NOTED.
4. USE SELECT MATERIAL UNDER BUILDINGS AND STRUCTURES; USE FILL AND BACKFILL MATERIAL UNDER PARKING AREAS, ROADS, SIDEWALKS, AND OTHER CONCRETE AND PAVED SURFACES; USE COMMON FILL
MATERIAL FOR GENERAL SITE GRADING. PLACE MATERIAL IN 6" LIFTS.
5. COMPACT LAYERS OF FILL TO 95 PERCENT BY ASTM D 1557 BENEATH AND WITHIN 25 FEET OF BUILDINGS AND STRUCTURES AND BY ASTM D 698 BENEATH AND WITHIN DETENTION POND EMBANKMENTS,
PAVEMENTS, WALKS, AND ROAD SHOULDERS, INCLUDING AREAS THAT MAY BE USED FOR FUTURE CONSTRUCTION. IN OTHER UNPAVED AREAS, COMPACT 90 PERCENT BY ASTM D 698. IF THE DENSITY OF THE
ADJACENT SOIL IS MORE THAN THE DENSITY SPECIFIED, THEN COMPACT TO A DENSITY NOT LESS THAN THE DENSITY OF THE ADJACENT SOIL.
6. AREAS ON WHICH FILL IS
TO BE PLACED SHALL BE CLEARED, GRUBBED, AND STRIPPED OF TOPSOIL. SOIL MATERIALS SHALL BE
FREE OF DEBRIS,
ROOTS, WOOD, SCRAP MATERIAL, VEGETATION, REFUSE, SOFT
UNSOUND PARTICLES, AND FROZEN DELETERIOUS OR OBJECTIONAL MATERIALS. THE MAXIMUM PARTICLE DIAMETER SHALL BE ONE
-HALF THE LIFT
THICKNESS. COMMON FILL MATERIAL SHALL BE UNCLASSIFIED
SOIL MATERIAL WITH THE
CHARACTERISTICS REQUIRED TO COMPACT TO THE SOIL DENSITY SPECIFIED FOR THE INTENDED LOCATION. BACKFILL AND
FILL MATERIAL: ASTM D 2487. CLASSIFICATION GW, GP, GM,
GC, SW, SP, SM, SC WITH
A MAXIMUM ASTM D 4318 LIQUID LIMIT OF 35, MAXIMUM ASTM D 4318 PLASTICITY INDEX OF 12, AND
MAXIMUM OF 25
PERCENT BY WEIGHT PASSING ASTM D 1140, NO. 200 SIEVE.
SELECT MATERIAL: ASTM
D 2487, CLASSIFICATION GW, GP, SW, SP WITH A MAXIMUM OF 10 PERCENT BY WEIGHT PASSING ASTM
D 1140, NO. 200
SIEVE.
7. EROSION AND SILTATION 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.
8. ALL SLOPES AND DISTURBED AREAS ARE TO BE FERTILIZED, SEEDED AND MULCHED.
9. THE MAXIMUM ALLOWABLE SLOPE IS 2:1 (HORIZONTAL: VERTICAL). WHERE REASONABLY OBTAINABLE, LESSER SLOPES OF 3:1 OR BETTER ARE TO BE ACHIEVED.
10. PAVED, RIP -RAP OR STABILIZATION MAT LINED DITCH MAY BE REQUIRED WHEN IN THE OPINION OF THE COUNTY ENGINEER, OR DESIGNEE, IT IS DEEMED NECESSARY IN ORDER TO STABILIZE A DRAINAGE
CHANNEL.
11. ALL TRAFFIC CONTROL SIGNS SHALL CONFORM WITH THE VIRGINIA MANUAL FOR UNIFORM TRAFFIC CONTROL DEVICES.
12. UNLESS OTHERWISE NOTED ALL CONCRETE PIPE SHALL BE REINFORCED CONCRETE PIPE - CLASS III.
13.
ALL
EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST
COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION
INDUSTRY (29 CFR PART 1926).
14.
ALL
FINISHED GRADING, SEEDING AND SODDING SHALL BE DONE
IN SUCH A MANNER TO PRELUDE THE PONDING OF THE
WATER ON THE SITE, PARTICULARLY ADJACENT TO THE BUILDINGS OR STORM INLETS.
15.
CUT
AND PATCH WORK IN EXISTING PUBLIC STREETS MUST BE
PERFORMED IN ACCORDANCE WITH VDOT AND ALBEMARLE
COUNTY STANDARDS AND SPECIFICATIONS.
16, ALL EXISTING CURB AND GUTTER ALONG THE FRONTAGE OF THIS SITE IN POOR CONDITION OR DAMAGED DURING CONSTRUCTION SHALL BE REMOVED AND REPLACED TO THE STANDARDS AND SPECIFICATIONS
OF ALBEMARLE COUNTY.
17. IN THE EVENT THAT SUSPECTED CONTAMINATED SOIL, GROUNDWATER, AND OTHER MEDIA ARE ENCOUNTERED DURING EXCAVATION AND CONSTRUCTION ACTIVITIES BASED ON VISUAL, OLFACTORY, OR OTHER
EVIDENCE, THEY CONTRACTOR SHALL STOP WORK IN THE VICINITY OF THE SUSPECT MATERIAL TO AVOID FURTHER SPREADING OF THE MATERIAL, AND SHALL NOTIFY THE OWNER IMMEDIATELY SO THAT THE
APPROPRIATE TESTING AND SUBSEQUENT ACTION CAN BE TAKEN.
EROSION AND SEDIMENT CONTROL PLAN FOR
LAUREL PARK LANE
PHASE 2
BLOCK C9 HOLLYMEAD TOWN CENTER
RIO DISTRICT, ALBEMARLE COUNTY, VIRGINIA
DRAWINGINDEX
E1 of 2 COVER SHEET
E2 of 2 EROSION PLAN AND DETAILS
MAINTENANCE SCHEDULE:
1. The contractor shall have a Responsible Land Disturber ( "RLD "), on the
site throughout the period during which the site is under construction.
The "RLD" shall maintain a daily erosion and sediment control log
demonstrating that erosion and sediment control measures are being
closely monitored and deficiencies are being quickly repaired. The "RLD"
shall assure that all control measures are being maintained in optimal
condition. The log shall be made available for inspection by the Program
Authority at any time during regular business hours.
2. Prior to construction contractor shall schedule an on -site meeting with a
flocculant block supplier and site inspector to determine if the use of
flocculants is appropriate for the site and soil conditions.
3. The Site Superintendent or his representative shall make a visual inspection
of all erosion and sediment controls on a daily basis until the site is
stabilized and especially after a heavy rainfall to assure that all controls
are in place and that none have been damaged. Any damaged control
shall be repaired prior to the end of each workday to include reseeding if
necessary.
4. Gravel outlets shall be checked regularly for sediment buildup that may
prevent drainage. Controls shall be inspected and repaired after each
rainfall and cleaned if sediment has accumulated to half of the device's
original height.
5. All earthen structures such as diversion dikes and berms shall be checked
daily during construction for breaching by equipment. Repairs shall be
made immediately.
6. Silt fences shall be checked after each rainstorm to assure they have not
fallen or become clogged with silt. All repairs shall be made immediately.
7. All seeded areas shall be inspected regularly to see that good stand is
maintained. Areas will be refertilized and reseeded as necessary.
8. After construction operations have ended and disturbed areas have been
stabilized, all berms and sediment - trapping devices may be removed. After
removal, the ground shot be restored to its natural or proposed condition
to include establishment of permanent vegetation. Removal of any control
is contingent upon approval of the County Inspector.
9. The developer shall reserve the right to install, maintain, remove and /or
convert to permanent stormwater management facilities (where applicable)
all erosion control measures required by this plan regardless of the sale of
any lot.
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SITE
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Existing Water Main
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Existing Contour
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Proposed Elevation
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EROSION CONTROL LEGEND
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3.07 INLET PROT CTION IP
CULVERT 3.08 INLET
PROTECTION CIP
TEMPORARY
3.31 SEEDING TS TS
3.32
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3.35 MULCHING MU --0--
3.39 DUST CONTROL
APPROVED
by the Albemarle County
Community Development Department
Date 04 RE,Gzq
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Erosion Plan
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GRA VEL AND WIRE MESH
DROP INLET SEDIMENT
FILTER
18" MIN.
PTO
SPECIFIC APPLICATION
GRAVEL (12-MIN. DEPTH)
WIRE MESH
FILTERED
WATER
THIS METHOD OF INLET PROTECTION IS APPLICABLE
WHERE HEAVY CONCENTRATED FLOWS ARE EXPECTED,
BUT NOT WHERE PONDING AROUND THE STRUCTURE
MIGHT CAUSE EXCESSIVE INCONVENIENCE OR DAMAGE
TO ADJACENT STRUCTURES AND UNPROTECTED AREAS.
GRAVEL SHALL BE VIDOT #3, #357 OR #5 COARSE
AGGREGATE.
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GRAVEL FILTER
RUNOFF WATER
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SPECIFIC APPLICATION
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THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS
WHERE PONDNG IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE
INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED
AREAS.
GRAVEL STALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE.
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■ ■ ■ ■ ■
Stone
Construction
Access
Existing
Grade
B
Stone
Construction
Access
A
70' Min
3" SM-2A Asphalt
Existing
- - - -------------- 21 Slope
. --. .. ... ... .. .
Pavement
3ase
\�L�Filter Cloth
ON B-13
Existing
Pavement
- ---------
12'* Min
2% Slope
—Positive Drainage *Must extend full
A
To Sediment width of ingress
Trapping Device
and egress operation
12' Min Positive Drainage
To Sediment
2% Slope— Trapping Device
-------------------------------- - - - - - - ------------------------
SECTION A—A
Filter Cloth
NOTE: A minimum water top of 1" must be installed with a minimum 1"
bollcock shutoff valve supplying a wash hose with a diameter of 1.5" for
adequate constant pressure. Wash waster must be carried away from the paved
construction entrance to an approved settling area to remove sediment. All
sediment shall be prevented from entering storm drains, ditches, or
watercourses.
Paved Construction Entrance (CE
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CONSTRUCTION OF A SILT FENCE
(WITHOUT WIRE SUPPORT)
2. EXCAVATE A 4" x 4" TRENCH
1. SET THE STAKES UPSLOPE ALONG THE LINE OF
STAKES.
6
MAX
4'
3. STAPLE FILTER MATERIAL
TO STAKES AND EXTEND
IT INTO THE TRENCH.
4. BACKFILL AND COMPACT
THE EXCAVATED SOIL.
SHEET FLOW INSTALLATION
(PERSPECTIVE VIEW)
POINT A SHOULD BE HIGHER THAN POINT B.
DRAINAGEWAY INSTALLATION
(FRONT ELEVATION)
Silt It Fence (SF)
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SIL,
FLOW IS TOWARD EMBANKMENT
Silt Fence
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FLOW
SILT FENCE IN "HORSESHOE" WHEN
HIGH VELOCITY OF FLOW
IS EXPECTED.
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Lic. No. 30542
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