SW4210704_Plansheet - Other_20211210 (9)

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CONSTRUCTION SEQUENCE FOR ALL STREAM CROSSINGS 40' CONST. EASEMENT DEWATERING BASIN L� . .........
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LAJ 1. CONTRACTOR SHALL INSTALL TEMPORARY CREEK CROSSING AS POLYETHYLENE FABRIC
8 MIL THICK (TYP.)
CLASS I RIP -RAP (TYP.) c1*4
DETAILED. THE TEMPORARY CREEK CROSSING SHALL BE PLAN
V INSTALLED ON THE UPSTREAM PORTION OF THE EASEMENT, AN %
ADEQUATE DISTANCE TO ALLOW SEWER LINE INSTALLATION. SANDBAGS (TYP.)
WATER �SYRFAC ---- -- -
2
O'l PRIOR TO INSTALLING THE SEWER LINE ACROSS THE CREEK, THE ---
2 N
r( CONTRACTOR SHALL INSTALL A TEMPORARY DAM UPSTREAM OF THE 0
CONSTRUCTION ACTIVITIES, AND PUMP THE STREAM FLOW AROUND THE
AREA OF DISTURBANCE. THE TEMPORARY DAM SHALL BE OF A CONCRETE FILL 0
STREAM BOTTOM(ROCK) 04
-ERODIBLE MATERIAL SUCH AS SAND BAGS OR PLASTIC SHEETING 0)
NON
PROPOSED PIPELINE 0 _J
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NOTES:
3. UPON COMPLETION OF THE SEWER LINE INSTALLATION CROSSING
THE CREEK, THE CONTRACTOR SHALL STABILIZE ALL DISTURBED AREAS 1. CONSTRUCT COFFER DAM AND UTILIZE
DEWATERING BASIN TO DRAIN WORK AREA. IN
WITH RIP -RAP (SEE DETAIL). 2. PUMP STREAM AROUND WORK AREA.
0
3. CONVERT COFFER DAM TO STREAM
4. UPON COMPLETION OF RIP -RAP, THE CONTRACTOR SHALL REMOVE CROSSING WHEN NO LONGER NEEDED.
4. CARE MUST BE TAKEN TO AVOID
THE TEMPORARY DAM, AND TERMINATE BYPASS PUMPING. CONTAMINATION TO THE STREAM FROM LLJ
POURED CONCRETE SEALANT.
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5. AT WHICH TIME THE SEWER LINE INSTALLATION HAS PASSED ALL
COFFER DAM LLJ 0
TESTING, AND THE AREA SEEDED, THE CONTRACTOR SHALL REMOVE Li
THE TEMPORARY CREEK CROSSING, AND RE-ESTABLISH ORIGINAL FOR BY-PASS PUMPING PIPELINE STREAM CROSSINGS Y LLJ
40' 30' 20' 10' 0 W. 80' LIJ CD 0 1
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