HomeMy WebLinkAboutMPDES SWPPP Admin 7.18_F2/23/2019
1
BMP BREAKDOWN –
CONVEYANCE BMPS
SECTION 7
SEDIMENT AND RUNOFF CONTROL
•DIVERSION OF RUN-ON
•PERIMETER CONTROLS
•CONVEYANCE BMPS
•INLET PROTECTION
RUNOFF CONVEYANCE
•THESE BMPS PREVENT THE MORE DEVASTATING TYPES OF EROSION BY
KEEPING WATER AWAY FROM BARE SOILS
•ALLOWS YOU TO RESPONSIBLY CONVEY WATER TO A COLLECTION
POINT
•PLANNING AHEAD TO INCORPORATE CONVEYANCE CAN BE A SIMPLE
SOLUTION TO AVOIDING MANY PROBLEMS
RUNOFF CONTROLS BMPS
KEEP CLEAN WATER –
CLEAN!
(AWAY FROM DISTURBED AREAS)
DIVERSION DIKES AND SWALES
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3 4
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2
USE WASHED ROCK
LINING CHANELS,DIKES AND SWALES
Fun for parties –Not great for worker’s comp
GRASS LINED CHANNELS WATER BARS
PIPE SLOPE DRAINS
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9 10
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3
LEVEL SPREADER &
VEGETATED SPRAY
FIELD
OUTLET PROTECTION
INTERCEPTION AND DISSIPATION
•REDUCES VELOCITY OF RUNOFF AND DISSIPATES ENERGY, WHICH REDUCES EROSION
•INTERCEPTS AND DETAINS SMALL AMOUNTS OF SEDIMENT
•REDUCES SEDIMENT TRANSPORT
•MAY NOT BE PLACED IN STREAMS OR WETLANDS
CHECK DAMS
CHECK DAMS
TRIANGULAR SILT DIKE
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4
SPRING BERM OVER VS. THROUGH
STRAW BALE BARRIER ALTERNATIVES TO STRAW BALES
SEDIMENT FENCE
IS
•A BMP
•A BARRIER
•A SAIL IN THE WIND
IS NOT
•FILTER FABRIC (BUT CAN BE)
•PERIMETER IDENTIFICATION (BUT
CAN BE)
•THE FIRST LINE OF DEFENSE
SEDIMENT FENCE
•USE FOR CONTAINMENT, NOTFILTRATION
•INSTALL ALONG CONTOUR
•OFTEN INSTALLED INCORRECTLY
•USE AS SECONDARY BMP NOT PRIMARY BMP
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5
Contour Installation J-hook Installation
SEDIMENT FENCE
KY ESC Field Manual
SEDIMENT FENCE INSTALLATION
JOINING AND ENDING SEDIMENT FENCE
SEDIMENT
FENCE FAILURE
PROPER SEWN-IN-POCKET INSTALL WHAT IS CORRECT?
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27 28
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6
WATTLES
WATTLES -STAKING
CHALLENGES WITH WATTLES
REUSABLE WATTLES
COIR LOGS
TERRATUBES
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7
COMPOST BERMS & SOCKS
COMPOST FILTER SOCKS & FILTER BERMS
•USE COARSE COMPOST
COMPOST FILTER SOCKS
•COARSE COMPOST
•MINIMUM SOCK SIZE 12
INCHES
•POLISHES WATER
•CAN PRODUCE AN
INITIAL SPIKE IN NTU
BLOWN COMPOST BERMS AND SOCKS
STORM DRAIN INLET PROTECTIONBMP C220 INLET PROTECTION
CATCH BASIN INSERTS
Overflow capacity
Below Grade
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39 40
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8
KEEP THE LOADING ON THE SURFACE
Blocksomand Company
SEDIMENT TRAP
TEMPORARY SEDIMENT POND SEDIMENT POND ENHANCEMENTS
THINGS TO
REMEMBER…
•SOURCE CONTROL
•KEEP CLEAN WATER CLEAN
•BMP COMBINATIONS
•USE MULTIPLE BMPS TO INCREASE EFFECTIVENESS
COMPLETION OF SECTION 4More BMPs to
Come
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