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LOT 2, BIG R COMMERCIAL PARK SUBDIVISION
RIFLE, COLORADO
GRADING PLAN
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EROSION CONTROL NOTES:
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I CONTRACTOR MUST UTILIZE 'BEST MANAGEMENT PRACTICES' (BMP), TO CONTROL EROSION AND
SEDIMENTATION DURING CONSTRUCTION
'2. CONTRACTOR IS RESPONSIBLE FOR INSTALLATION AND MAINTENANCE OF ALL TEMPORARY EROSION
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' 7. DUST CAUSED BY EXCAVATION, TOPSOIL REMOVAL OPERATIONS. OR ROAD BASE PLACEMENT SHALL BE
CONTROLLED BY THE CONTRACTOR AT HIS EXPENSE THE ENGINEER MAY REQUIRE THE CONTRACTOR AT
ANY TIME TO DISCONTINUE CONSTRUCTION ACTIVITIES UNTIL DUST CONDITIONS ARE REDUCED TO THE
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I 4 BMP'S STALL BE INSTALLED BEFORE ANY EARTH DISTURBING ACTIVITIES COMMENCE
i 5 STORMWATER DISCHARGES FROM CONSTRUCTION ACTIVITIES SHALL NOT CAUSE, HAVE THE REASONABLE
POTENTIAL TO CAUSE, OR MEASURABLY CONTRIBUTE TO AN EXCEEDANCE OF ANY WATER QUALM
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I S SEDIMENT CAUSED BY ACCELERATED SOIL EROSION SHALL BE REMOVED FROM RUNOFF WATER BEFORE IT
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I 7. BULK STORAGE STRUCTURES FOR PETROLEUM PRODUCTS AND ANY OTHER CHEMICALS SHALL HAVE
A SECONDARY CONTAINMENT OR EQUIVALENT PROTECTION TO CONTAIN ALL SPILLS AND PREVENT ANY
SPILLED MATERIAL FROM ENTERING STATE WATERS
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L THE EROSION CONTROL PLAN SHALL BE CONTINUOUSLY UPDATED TO REFLECT NEW OR REVISED REST
MANAGEMENT PRACTICES (EMP'S) DUE TO CHANGES IN DESIGN, CONSTRUCTION, OPERATION, OR
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MEMPRECIPITATION
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I MAINTENANCE OF THE CONSTRUCTION SITE UPDATES MUST BE MADE WITHIN 72 HOURS FOLLOWING THE
CHANGE IN BMPS
I 4 THE CONTRACTOR SHALL INSPECT THE CONSTRUCTION SITE(INCWOING ALL BMP'S, STORAGE CONTAINERS,
AND CONSTRUCTION EWIPMENT)AMINIMUM OF EVERY 14 CALENDAR DAYS AND WITHIN 24 HOURS AFTER
EVENT OR SNOW MELT THAT MAY CAUSE SURFACE EROSION
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' 10. THE CONTRACTOR SHALL KEEP A RECORD OF ALL INSPECTIONS ON SITE AND AVAILABLE FOR REVIEW BY
COUNTY STAFF. INSPECTION REPORTS MUST IDENTIFY ANY INCIDENTS OF NON-COMPLIANCE WITH THE
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TERMS ANDCONDITONS OF THE PERMIT.
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I1 STRAW BALES SHALL NOT BE USED FOR PRIMARY EROSION OR SEDIMENT CONTROL a E STRAW BALES MAY
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BE USED FOR REINFORCEMENT BEHIND ANOTHER BMP SUCH AS SILT FENCE).
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12. /IMP'S INTENDED FOR SHEET FLOW SEDIMENT RUNOFF SHALL BE PLACED PARALLEL TO THE SLOPE.
13, ALL BNP'S SHALL BE CLEANED WHEN SEDIMENT LEVELS ACCUMULATE TO HALF THE DESIGN OF THE BMP
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UNLESS OTHERWISE SPECIFIED
j 14 A VEHICLE TRACKING PAD 5/TP) ANDIOR STABIUZED STAGING AREAS SHALL BE PLACED AT ALL EXITS FROM
TIE SITE TO PREVENT TRACK -OUT ONTO CITY STREETS IF TRACK -OUT DOES OCCUR, THE CONTRACTOR
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SHALL IMMEDIATELY SWEEP THE STREET OF DEBRIS
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15 ALL PORTA-POTTY STRUCTURES MUST BE FIRMLY SECURED LATH WN REBAR ANCHORS OR EQUAL MUST BE
I PLACED AWAY FROM FLOW LINES OF STREET, SWAIES, RAIN GARDENS A AWAY FROM INLETS.
1fi STOCKPILES OF SOIL OR OTHER ERODABLEN MATERIALS MIST BE MANAGED SO TAT STORMWATER DOES
NOT COME IN CONTACT WITH THE PILE AND POTENMLLY WASH POLLUTANTS OFFSITE ATMINIMUM
1 STOCKPILES SHALL BE ROUTINELY WETTED AND/OR BLANKETED AS WELL AS INCLUDE AN EROSION SOCK
PERIMETER BARRIER TO PREVENT WIND EROSION AND SEDIMENT TRANSPORT OFFSITE STOCKPILES THAT
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ARE INACTIVE FOR MORE THAN 7 DAYS WILL REQUIRE SOIL RINSER OR HAVE MUCLTVMULCH TACKIFIER
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17. EROSION CONTROL BLANKETS SHALL BE INSTALLED ON ALL SLOPES EXCEEDING 31.
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' 111 EXISTING CONTOURS ILLUSTRATED HEREIN ARE ATI FT INTERVAL, BASED ON AERIAL TOPOGRAPHY
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14n0h-HA N. ` IS PROPOSED CONTOURS ARE AT MFT INTERVALS
i ` 25 SITE GRADING PROVIDES GENERAL DIRECTION FOR THE CONTRACTOR. SLOPES AS LABELED SHALL BE
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DATE
REVISION
MAINTAINED.
21. THE UTIl1TE5 AS SHOWN, W1Y NOT REPRESENT ACTUAL FIELD CONDITIONS IT IS THE RESPONSIBILITY OF
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THE CONTRACTOR TO CONTACT ALL IDILITV COMPANIES FOR FIELD LOCATIONS OF UTILITIES PRIOR TO
CONSTRUCTION
SEDIMENTATION LOS -I2 -AIN DIAMETER CONTROL L,..,?,,INSTALIIIAdTar�ENT
SEDIMENT
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2 SEDIMENTECONNTTRO SSHHAALLTL BE INSTALLED PRIOR TOANY
LAMA KTAM![INIIRIATAALIIRINI!D DISTURBING ACTnCS
OII DIMIMENT CONTROL LOGS SHALL CONSIST OF STRAW
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SILT FENCE INSTALLATION SILT FENCE DETAIL
VEHICLE TRACKING CONTROL
TYPICAL SECTION - PARKING LOT
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