20160955 Ver 1_RAND371_hyd_construction_seq_20161004

CULVERT PHASING
SF-750371
Q
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NOTE: USE SANDBAGS FOR ALL IMPERVIOUS DIKES
PHASE 1
1.) INSTALL ALL TEMPORARY SEDIMENT CONTROL DEVICES NECESSARY
FOR CULVERT CONSTRUCTION.
2.) INSTALL SPECIAL STILLING BASIN WITHIN FOOTPRINT OF PROPOSED
ROADWAY. SPECIAL STILLING BASIN CAPACITY SHOULD ALLOW FOR A
MINIMUM OF 114 CUBIC YARDS OF EFFLUENT WHICH IS HALF OF THE
VOLUME FROM THE PROPOSED CULVERT. PUMP ALL EFFLUENT INTO
SPECIAL STILLING BASIN.
3.)
4.)
5.)
6.)
INSTALL IMPERVIOUS DIKES AND INSTALL 30" TEMP. PIPE.
DE—WATER EFFLUENT FROM WORK SITE INTO SPECIAL STILLING BASIN.
CONSTRUCT PROPOSED 32'9" x 12'0" ALUMINUM BOX CULVERT AND
FLOOD BENCH PER PLANS.
STABILIZE CHANNEL BANKS.
PHASE 2
6.)
7.)
REMOVE TEMPORARY IMPERVIOUS DIKES AND TEMP. PIPE TO ALLOW
FLOW THROUGH NEWLY CONSTRUCTED CULVERT.
UPON STABILIZATION OF ALL DISTURBED AREAS, REMOVE ALL
TEMPORARY SEDIMENT CONTROL DEVICES.