20140514 Ver 1_More Info Received_20140707 (2)

OVERFLOW WIDTH 1/2 "BANKFULL"
I_ru <- 1--1\fo1N!V
BYF
(SEE
7 MIN. 1 1. BYPASS PIPE: MINIMUM DIAMETER: 12" (SUMMER FLOWS)
VARIES AS NEEDED 45 DEGREE ELBOWS REQUIRED: 2 (MIN.)
2. BYPASS PIPE UNDER FINISHED:
HIGH DENSITY POLYETHYLENE PIPE MEETING REQUIREMENTS OF
ELEVATION VIEW STREAMBED SEC. 602 MITER ENDS TO FINISHED FILL SLOPES. PAYMENT ELB
SUBSIDIARY TO ITEM 15713. A,'
3. REMOVE ALL DEWATERING FACILITIES WHEN NEED IS GONE.
CONTRACTOR'S OPTION TO REMOVE THE DEWATERING PIPE FROM Bp
UNDER FILL OR PLUG EACH END WITH CONCRETE AND LEAVE IN PLACE.
CLOCAI
STREAK
IMPERVIOUS MEMBRANE KEY TRENCH
AS NEEDED TO CONTROL SEEPAGE
UNDER IMPERVIOUS MEMBRANE
FILL WITH CLEAN GRAVEL
2'
IMPERVIOUS MEMBRANE
DOWNSTREAM END
SANDBAGS BYPASS PIPE
/_ DIAMETER
MINIMUM
BYPASS PIPE
12" DIAMETER
MINIMUM or Q2 FL
6. THE CONTRACTOR IS RESPONSIBLE FOR MAINTAINING THE NEW CONSTRUCTION
AREA IN AS DRY A CONDITION AS POSSIBLE DURING CONSTRUCTION.
DEWATERING DETAILS
THIS PLAN IS FOR EXAMPLE ONLY - NOT REQUIRED - CONSIDER AS GUIDANCE
BYPASS SCHEMATIC - TYPICAL PLAN VIEW
(NOT TO SCALE)
r0RE5T5ERVIq U.S. DEPARTMENT OF AGRICULTURE NATIONAL FORESTS IN NORTH CAROLINA 1
U ,S FOREST SERVICE NANTAHALA NATIONAL FOREST - TUSQUITEE RANGER DISTRICT STREAM DIVERSION & DEWATERING DETAILS
9�T�E 0 40 REGION 8 TRIBUTARY TO HIAWASSEE CREEK
STREAM RESTORATION
STRAW BALES STREAM FLOW
STREAMBED
IMPERVIOUS MEMBRANE
LEAK -PROOF COLLAR
GEOTEXTILE
UPSTREAM END PRORILE VIEW
MIRAFI 140N GRANULAR BACKFILL
SANDBAG BYPASS DAM DETAILS
OR EQUAL SECTION 703.03(a)
(NOT TO SCALE)
STREAMBED
"BR
NOTES
SECTION VIEW
1. THIS DEWATERING & SEDIMENT CONTROL PLAN SHOWS THE
L 0 GRANULAR BACKFILL
MINIMUM ACCEPTABLE CRITERIA, AND MAY REQUIRE ADDITIONAL
�- -i SECTION 703.03(a)
REMOVE SEDIMENT /Tl
MEASURES. THE CONTRACTOR WILL SUBMIT A DESIGN /PLAN
U) u- I
BEFORE ALLOWING `
TO THE C.O.R. FOR APPROVAL THAT MEETS OR EXCEEDS THE STANDARDS
11
TO RE -ENTER STF
SHOWN HEREON.
j/
GEOTEXTILE
2. MAINTAINING WATER TURBIDITY DOWNSTREAM (NOT EXCEEDING
MIRAFI 140N
THE TURBIDITY OF THE UPSTREAM WATER) IS THE RESPONSIBILITY OF THE
OR EQUAL
CONTRACTOR THROUGHOUT THE DURATION OF THE PROJECT.
GEOTEXTILE -WRAF
3. PUMPS CAPABLE OF PUMPING STREAM FLOW SHALL BE ON -SITE
BANKFULL STRAW BALES
STRAW BALE SEDIP
UNTIL STREAM IS FLOWING ON APPROVED FINISHED STREAMBED.
CONTROL WEIR
REMOVE SEDIMEN'
4. OVERNIGHT PUMPING IS NOT PERMITTED, OPERATE "BROWN- WATER" SUMP
PLAN VIEW
1/2 HEIGHT OF THE
AT END OF WORK DAY UNTIL SUMP WATER IS CLEAR.
GEOTEXTILE - WRAPPED STRAW BALE SEDIMENT CONTROL WEIR
STRAW BALES
5. MATERIAL HANDLING BAGS MAY BE USED, INSTEAD OF SANDBAGS,
(NOT TO SCALE)
WHERE THEY ARE MORE EFFECTIVE.
6. THE CONTRACTOR IS RESPONSIBLE FOR MAINTAINING THE NEW CONSTRUCTION
AREA IN AS DRY A CONDITION AS POSSIBLE DURING CONSTRUCTION.
DEWATERING DETAILS
THIS PLAN IS FOR EXAMPLE ONLY - NOT REQUIRED - CONSIDER AS GUIDANCE
BYPASS SCHEMATIC - TYPICAL PLAN VIEW
(NOT TO SCALE)
r0RE5T5ERVIq U.S. DEPARTMENT OF AGRICULTURE NATIONAL FORESTS IN NORTH CAROLINA 1
U ,S FOREST SERVICE NANTAHALA NATIONAL FOREST - TUSQUITEE RANGER DISTRICT STREAM DIVERSION & DEWATERING DETAILS
9�T�E 0 40 REGION 8 TRIBUTARY TO HIAWASSEE CREEK
STREAM RESTORATION