HomeMy WebLinkAboutDecision 3968 - Book of Plans Page 6 - Grading, Drainage and Erosion Control PlanEXISTING CATCH BASIN
EXISTING STORM DRAIN
EXISTING CONTOUR
PROPOSED STORM DRAIN
PROPOSED DRAIN MANHOLE
PROPOSED CONTOUR
PROPOSED SPOT GRADE
EXISTING SPOT GRADE
\ ® PROPOSED CATCH BASIN
PROPOSED INLET PROTECTION BARR.,:R
\� r
\ J
1
i I 11 1'
1
6. \ Gam, . \
NV �\ \
NV = 10.8 �1
RIM - 15.6
INV OUT= 10.3
r..PA nrivr,
GRADING AND DRAINAGE_ NOTES•
1. ALL DISTURBED AREAS NOT TO BE PAVED OR OTHERWISE TREATED
SHALL RECEIVE 4" LOAM, SEED, FERTILIZER AND MULCH.
2. ADJUST ALL MANHOLES, CATCHBASINS, CURB BOXES, ETC. WITHIN LIMITS
OF WORK TO FINISH GRADE,
3. ALL STORM DRAIN SHALL BE HIGH DENSITY POLYETHYLENE (HANCOR "HIQ",
ADS N-12, OR APPROVED EQUAL) UNLESS OTHERWISE NOTED,
4. ALL STORM DRAIN CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE
YARMOUTH DEPARTMENT OF PUBLIC WORKS STANDARD SPECIFICATIONS
5, PROVIDE OIL/GAS SEPARATOR HOODS ON ALL NEW CATCHBASINS,
6. THE CONTRACTOR SHALL GIVE TWENTY FOUR (24) HOUR NOTICE TO PERTINENT
CITY DEPARTMENTS BEFORE COMMENCING ANY WORK IN THE FIELD,
7. SEE EXISTING CONDITIONS PLAN FOR BENCHMARK INFORMATION.
8. THE PROJECT WILL BE REQUIRED TO OBTAIN NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES) PERMIT COVERAGE TO ISSUED BY THE UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
(EPA). THE OWNER/DEVELOPER AND "OPERATOR" (GENERAL CONTRACTOR) SHALL BE REQUIRED TO
PREPARE AND SUBMIT A NOTICE OF INTENT (NOI) TO THE EPA PRIOR TO THE START OF CONSTRUCTION
AND SHALL BE RESPONSIBLE FOR THE PREPARATION AND IMPLEMENTATION OF STORM WATER POLLUTION
PREVENTION PLAN (SWPPP) MEETING THE REQUIREMENTS OF THE CURRENT NPDES PERMIT,
R OMM NDED RO ION CONTROL NOTES -
1.
O S1. INSTALL SILT FENCE BARRIERS AS SHOWN ON THIS PLAN AS FIRST ORDER OF WORK.
2, SEE GENERAL EROSION CONTROL NOTES ON DETAIL SHEET.
3. CONSTRUCT EROSION CONTROL MAT ON ALL SLOPES STEEPER THAN 3:1,
4. PROVIDE INLET PROTECTION BARRIERS AROUND ALL EXISTING AND PROPOSED STORM
DRAINAGE INLETS WITHIN THE WORK UMITS AND MAINTAIN FOR THE DURATION OF
THE PROJECT UNTIL PAVEMENT HAS BEEN INSTALLED.
5. INSPECT SILT FENCES AND INLET PROTECTION BARRIERS AFTER EACH RAIN OF 0.50 INCHES
OR GREATER. REPAIR/MODIFY PROTECTION AS NECESSARY TO MAXIMIZE EFFICIENCY FILTER.
REPLACE ALL FILTERS WHEN SEDIMENT IS 1/3 THE STRUCTURE HEIGHT,
6. SEDIMENT DEPOSITS SHALL BE REMOVED AFTER EACH STORM EVENT, OR MORE OFTEN IF
THE FABRIC BECOMES CLOGGED.
7. INSTALL STABILIZED CONSTRUCTION ENTRANCE ADJACENT TO EXISTING PAVED AREAS AT
LOCATIONS WHERE CONSTRUCTION VEHICLES EXIT THE DISTURBED AREA.
S. TEMPORARY STOCKPILES SHALL BE RINGED WITH SILT FENCE.
NAG.
GRAPHIC
ER0S,inNT rnATTpnr