HomeMy WebLinkAbout83-99 Erosion Control PlanI T►IT TC nr r n K I C' T n I I r T T n hI
"DON'T DIG BLIND"
CLEARING, EXCAVATION,
1999 2000
OCT NOV iDEC JAN FEB MAR APR
�— Install Si4 Fence, Constriction Entranc
EROSION CONTROL SCHEDULE
DN CONTROL MEASURE
MAINTENANCE
INSTALLATION SEQUENCE
ENTRANCE
AS NEEDED
PRIOR TO CLEARING AND GRADING
'NCE
WEEKLY, AFTER STORM
EVENTS, AND
AS NEEDED
PRIOR TO CLEARING AND GRADING
G INLET PROTECTION
WEEKLY, AFTER STORM
EVENTS, AND
AS NEEDED
PRIOR TO CLEARING AND GRADING
ROTECTION
WEEKLY, AFTER STORM
EVENTS, AND
AS NEEDED
PRIOR TO CLEARING AND GRADING
?ARY DIVERSIONS
WEEKLY, AFTER STORM
EVENTS, AND
AS NEEDED
ALONG WITH ROUGH GRADING
i'ARY SEEDING
WATER AS NEEDED
AFTER ROUGH GRADING
TENT SEEDING
WATER AS NEEDED
AFTER FINISH GRADING
V CONTROL MATTING
WEEKLY, AFTER STORM
EVENTS, AND
AS NEEDED
AFTER FINISH GRADING
BALES
WEEKLY, AFTER STORM
EVENTS, AND
AS NEEDED
_
AFTER FINISH GRADING
'ROTECTION
WEEKLY, AFTER STORM
EVENTS. AND
AS NEEDED
_
AFTER EACH INLET IS PLACED _
,OD & LANDSCAPE AROUND
WATER AS NEEDED
AFTER FINISHED GRADING AROUND FINISHED UNITS
i FINISHED
1L OF STRAW BALES
N/A
AFTER ALL AREAS DRAINING TO THESE AREAS ARE STABILIZED
kL OF INLET PROTECTION
N/A _
AFTER ALL AREAS DRAINING TO THESE AREAS ARE STABILIZED
1L OF SILT FENCE
N/A
AFTER ALL AREAS DRAINING TO THESE AREAS ARE STABILIZED
EROSION CONTROL NOTES
1. CONSTRUCTION ACTIVITY SHALL GENERALLY CONSIST OF 2 OFFICE
BUILDINGS, SIDEWALKS AND A PARKING LOT.
2. THE PRELIMINARY CONSTRUCTION SCHEDULE IS AS FOLLOWS: CLEARING
AND ROUGH GRADING TO BEGIN IN OCTOBER 1999. CURBING AND FINAL
GRADING ANTICIPATED TO BE COMPLETED IN THE SPRING OF 2000.
3. THE CONTRACTOR IS RESPONSIBLE FOR CONTROLLING EROSION AND
SEDIMENT MIGRATION FROM THE SITE.
4. THE CONTRACTOR SHALL USE SILT FENCE, SEDIMENT TRAPS AND
DIVERSION DITCHES AS SHOWN ON THE PLANS AND WHERE NECESSARY TO
PREVENT SEDIMENT RUNOFF.
5. ADJACENT LAND IS OFFICE, COMMERCIAL, OR VACANT.
+~w""•..,,,,`let 6. HYDRIC SOILS MAY BE LOCATED ALONG EXISTING DITCH.
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7. STORM WATER DOES NOT APPEAR TO ENTER GROUNDWATER ON THE SITE.
8. EXISTING VEGETATIVE COVER SHALL BE PRESERVED IN AREAS NOT
DISTURBED BY CONSTRUCTION ACTIVITY.
9. ALL EXCESS SOIL SHALL BE STOCKPILED ON SITE AS DIRECTED
BY THE DEVELOPER. A RECOMMENDED STOCKPILE AREA IS SHOWN ON THIS PLAN.
10. ALL DISTURBED AREAS SHALL BE TEMPORARILY SEEDED IMMEDIATELY
UPON COMPLETION OF ROUGH GRADING.
11. THE SITE IS NOT LOCATED IN A 100-YEAR FLOOD PLAIN PER FEMA
FLOOD HAZARD BOUNDARIES.
12. ALL UNPAVED AREAS TO BE TEMPORARILY SEEDED AT COMPLETION
OF CONSTRUCTION.
SILT FENCE MAINTENANCE REQUIREMENTS
1. INSPECT THE SILT FENCE PERIODICALLY AND AFTER EACH STORM
EVENT.
2. IF FENCE FABRIC TEARS, STARTS TO DECOMPOSE OR IN ANY WAY
BECOMES INEFFECTIVE, REPLACE THE AFFECTED PORTION IMMEDIATELY.
3. REMOVE DEPOSITED SEDIMENT WHEN IT REACHES HALF THE HEIGHT OF
THE FENCE AT ITS LOWEST POINT OR WHEN IT IS CAUSING THE FABRIC
TO BULGE.
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4. TAKE CARE TO AVOID UNDERMINING THE FENCE DURING CLEAN OUT.
5. AFTER CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED, REMOVE
THE FENCE AND REPLACE SEDIMENT DEPOSITS, BRING THE DISTURBED
AREA TO GRADE, AND STABILIZE.
TEMPORARY GRAVEL CONSTRUCTION ENTRANCE
LIMITS OF CONSTRUCTION MAINTENANCE REQUIREMENTS
1. INSPECT ENTRANCE PAD AND SEDIMENT DISPOSAL AREA WEEKLY AND
AFTER STORM EVENTS OR HEAVY USE.
2. RE -SHAPE PAD AS NEEDED FOR DRAINAGE AND RUNOFF CONTROL.
3. TOP DRESS WITH CLEAN STONE AS NEEDED.
4. IMMEDIATELY REMOVE MUD AND SEDIMENT TRACKED OR WASHED ONTO
ADJACENT STREETS BY BRUSHING OR SWEEPING. FLUSHING SHOULD ONLY
BE USED IF THE WATER IS CONVEYED INTO A SEDIMENT TRAP OR BASIN.
5. REPAIR ANY BROKEN ROAD PAVEMENT IMMEDIATELY.
SOIL CHARACTERISTICS
CROSBY SILT LOAM (CrA)
THE CROSBY SILT LOAM CONSISTS OF NEARLY LEVEL, DEEP, SOMEWHAT
POORLY -DRAINED SOIL ON BROAD, UNDULATING TILL PLAINS.
AREAS ARE IRREGULAR IN SHAPE AND ARE 3 TO 200 ACRES IN SIZE.
IN A REPRESENTATIVE PROFILE THE SURFACE LAYER IS DARK GRAYISH
BROWN SILT LOAM ABOUT 8 INCHES THICK. THE SUBSURFACE LAYER IS
DARK GRAYISH BROWN SILT LOAM ABOUT 3 INCHES THICK. THE
SUBSOIL IS DARK YELLOWISH BROWN AND YELLOWISH BROWN, MOTTLED,
FIRM SILTY CLAY LOAM AND CLAY LOAM ABOUT 21INCHES THICK. THE
UNDERLYING MATERIAL TO A DEPTH OF 60 INCHES IS BROWN,
CALCAREOUS LOAM.
ORGANIC MATTER CONTENT IS MODERATE IN THE SURFACE LAYER.
PERMEABILITY IS SLOW. THE WATER TABLE IS COMMONLY 1 TO 3 FEET
IN WINTER AND EARLY SPRING. FURTHERMORE, THE SOIL HAS A HIGH
SHRINK -SWELL POTENTIAL AND HIGH POTENTIAL FROST ACTION.
THE SOIL HAS SEVERE LIMITATIONS FOR BUILDING SITES. THE SITES
NEED TO BE ARTIFICIALLY DRAINED TO PREVENT WETNESS FROM
BECOMING A PROBLEM. USING PROPERLY DESIGNED FOUNDATIONS AND
FOOTINGS HELPS PREVENT STRUCTURAL DAMAGE FROM LOW STRENGTH AND
SHRINKING AND SWELLING OF THE SOIL. THE SOIL ALSO HAS SEVERE
LIMITATIONS FOR ROAD FILL. THE BASE MATERIAL FOR ROADS NEEDS
TO BE STRENGTHENED OR REPLACED WITH SUITABLE MATERIAL.
LEGEND
STRAW BALE
it♦
SILT FENCE
PERMANENT SEEDING
EROSION CONTROL BLANKET
RIP -RAP
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DATE: AUGUST 19, 1999
SCALE: 1" =
20'
PROJECT NO.111-1194
IISHEET
C106 'I
1194EC.DGN
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