20230410 Ver 1_More Info Received_20230630

PLAN _ APPROVED EQUAL)
SIZED AND INSTALLED IN
ACCORDANCE WITH
MANUFACTURERS
RECOMMENDATIONS
WATERPROOF
POLYETHYLENE FABRIC
ON FACE (MINIMUM 8 MIL
THICK) 12' MIN FROM PUMP
TOP OF BANK
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° PROJECT
STREAM FLOW . „_..�,.�, ,. ,_,_,_,_,_,.._�, AREA
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WATERPROOF
EX STREAM BOTTOM-
POLYETHYLENE FABRIC ON
FACE (8 MIL THICK)
TEMPORARY STONE DAM
SECTION A -A
TEMPORARY STREAM CROSSING BYPASS
NOT TO SCALE
PUMP -AROUND
NOTES:
1. IT IS RECOMMENDED THAT WORK BE SCHEDULED SUCH THE CULVERT REPLACEMENT CAN BE
COMPLETED DURING A TIME OF MINIMAL PRECIPITATION.
2. BYPASS PLAN IS SCHEMATIC. CONTRACTOR IS RESPONSIBLE FOR THE DESIGN, INSTALLATION,
MAINTENANCE, OPERATION AND REMOVAL OF ALL EQUIPMENT AND TEMPORARY
CONSTRUCTION TO INSURE "DRY" WORKING CONDITIONS.
3. PUMP AND LINE SIZES TO BE DETERMINED BY THE CONTRACTOR.
4. EROSION STONE TO BE CLASS T' OR "B" RIP -RAP AS SHOWN, UNLESS DESIGNATED DIFFERENTLY
ON CONSTRUCTION PLAN.
MAINTENANCE NOTES:
1. INSPECT WEEKLY AND AFTER EACH RAINFALL EVENT THAT PRODUCES Y INCH OR MORE OF RAIN.
2. REMOVE SEDIMENT AND WOODY DEBRIS PROMPTLY.
3. REMOVE COLLECTED SEDIMENT FROM STONE/RIP-RAP AREAS AS NECESSARY. TOP DRESS WITH 211,
WASHED STONE AS NECESSARY.
CONSTRUCTION SEQUENCE
1. INSTALL PUMPS UPSTREAM OF TEMPORARY STREAM CROSSING AND PUMP TO AREA
DOWNSTREAM OF CONSTRUCTION AREA. BEGIN PUMPING AND CONTINUE PUMPING WHILE
WORKING WITHIN THE STREAM.
2. INSTALL BYPASS CHANNEL. DIVERT FLOW TO BYPASS CHANNEL.
3. INSTALL UPSTREAM DAM (CLASS "I" RIP -RAP) AND DOWNSTREAM DAM (CLASS "B" RIP -RAP) WITH
WATERPROOF POLYETHYLENE FABRIC FACING (MINIMUM 8 MIL THICK).
4. INSTALL WORK AREA DEWATERING PUMP AND SEDIMENT FILTER BAG AT TOP OF BANK.
DEWATER CONSTRUCTION AREA BETWEEN STONE DAM USING THE FILTER BAG.
5. INSTALL THE CULVERTS AND HEADWALLS.
6. BACKFILL CULVERT.
7. INSTALL PERMANENT EROSION CONTROL DEVICES AND STABILIZE AREAS AS INDICATED ON
EROSION CONTROL PLAN.
8. CONCURRENTLY WITH STEP 7 REMOVE PUMPS, SEDIMENT BAGS, AND TEMPORARY COFFERDAMS.
(REMOVE POLYETHYLENE, REMOVE AND STOCKPILE RIP -RAP, TO THE LEVEL OF THE STREAM
BOTTOM, FOR USE IN CONSTRUCTING RIP -RAP DISSIPATOR.
9. CONSTRUCT ROADWAY IMPROVEMENTS.
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WR Job N..
02201372
DATE
06/28/2023
DRN: WR
DGN: WR CKD: WR
7