HomeMy WebLinkAboutC1.55_SWPPP SWPPP Details 71 50'MINIMUM EXISTING
CONSTRUCTION SPECIFICATIONS STORM SEWER GRATE 00 O DANDY SACK �1 �% T H E
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O O 1. STONE SIZE - USE 2"-6" DIAMETER CRUSHED STONE OR RECLAIMED OR OOOOOOOOp0000 SPECIFICATIONS
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00 000 \ NOTE:THE DANDY SACKTM WILL BE MANUFACTURED IN THE U.S.A. FROM A WOVEN .
2. LENGTH AS REQUIRED, BUT NOT LESS THAN 50 FEET (EXCEPT ON A 00 GROUP
zJ SINGLE RESIDENCE LOT WHERE A 30 FOOT MINIMUM LENGTH WOULD REINFORCED CORNERS MONOFILAMENT FABRIC THAT MEETS OR EXCEEDS THE FOLLOWING SPECIFICATIONS: �
FILTER CLOTH MOUNTABLE BERM REGULAR FLOW DANDY SACKT- (BLACK)
(OPTIONAL) APPLY). REQUIRED
3. THICKNESS- NOT LESS THAN 6 INCHES. MECHANICAL PROPERTIES TEST METHOD UNITS MARV
4. WIDTH - 15 FOOT MINIMUM, BUT NOT LESS THAN THE FULL WIDTH AT Ii OVERFLOW PORTS
EXISTING GRADE PROFILE POINTS WHERE INGRESS OR EGRESS OCCURS.
0 5. FILTER CLOTH - WILL BE PLACED OVER THE ENTIRE AREA PRIOR TO ® ® GRAB TENSILE STRENGTH ASTM D 4632 KN LBS 1.78 400 X 1.40 315
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PLACING OF STONE. FILTER WILL NOT BE REQUIRED ON A SINGLE MANAGEABLE 2-FT DANDY SACK TM GRAB TENSILE ELONGATION ASTM D 4632 % 15 X 15
50'MINIMUM FAMILY RESIDENCE LOT. CONTAINMENT AREA PUNCTURE STRENGTH ASTM D 4833 KN LBS 0.67 150
6. ALL SURFACE WATER FLOWING OR DIVERTED TOWARD CONSTRUCTION MULLEN BURST STRENGTH ASTM D 3786 KPA PSI 5506 800
1 TRAPEZOID TEAR STRENGTH ASTM D 4533 KN LBS 0.67 150 X 0.73 165
ENTRANCES SHALL BE PIPED ACROSS THE ENTRANCE. IF PIPING IS DUMPING STRAP UV RESISTANCE ASTM D 4355 % 90
IMPRACTICAL, A MOUNTABLE BERM WITH 5:1 SLOPES WILL BE APPARENT OPENING SIZE ASTM D 4751 MM US STD SIEVE 0.425 40
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7. PERMITTED. i I FLOW RATE ASTM D 4491 1/MIN/M2 GAL/MIN/FT 2 2852 70
MAINTENANCE - THE ENTRANCE SHALL BE MAINTAINED IN A CONDITION PERMITTIVITY ASTM D 4491 SEC 0.90
� j0 0 C z_ �0 C ' O O O O WHICH WILL PREVENT TRACKING OR FLOWING OF SEDIMENT ONTO STORM INLET
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(Q�(Q�� ��(��(�� (��(`�01 (��( � PUBLIC RIGHT-OF-WAY. THIS MAY REQUIRE PERIODIC TOP DRESSING
0 0 HI FLOW DANDY SACK"' (SAFETY ORANGE)
� Co `� `��� `� `� `� �`� WITH ADDITIONAL STONE AS CONDITIONS DEMAND AND REPAIR AND/OR
)M D D O O D� JO O O O O CLEANOUT OF ANY MEASURES USED TO TRAP SEDIMENT. ALL NOTES: MECHANICAL PROPERTIES TEST METHOD UNITS MARV
SEDIMENT SPILLED, DROPPED, WASHED OR TRACKED ONTO PUBLIC 1. INSPECT AT FREQUENCY DESCRIBED IN SWPPP
RIGHT-OF-WAY MUST BE REMOVED IMMEDIATELY. DOCUMENTS. REPAIR OR REPLACE AS NEEDED.
2. REMOVE SEDIMENT ACCUMULATIONS WHEN GRAB TENSILE STRENGTH ASTM D 4632 KN LBS 1.62 365 X 0.89 200
8. WASHING - WHEELS SHALL BE CLEANED TO REMOVE SEDIMENT PRIOR GRAB TENSILE ELONGATION ASTM D 4632 % 24 X 10
O O TO ENTRANCE ONTO PUBLIC RIGHT-OF-WAY. WHEN WASHING IS FILTER CAPACITY IS REDUCES BY 50%. PUNCTURE STRENGTH ASTM D 4833 KN LBS 0.40 90
` j REQUIRED, IT SHALL BE DONE ON AN AREA STABILIZED WITH STONE MULLEN BURST STRENGTH ASTM D 3786 KPA PSI 3097 450
O AND WHICH DRAINS INTO AN APPROVED SEDIMENT TRAPPING DEVICE. TRAPEZOID TEAR STRENGTH ASTM D 4533 KN LBS 0.51 115 X 0.33 75
PLAN VIEW 9. PERIODIC INSPECTION AND NEEDED MAINTENANCE SHALL BE PROVIDED UV RESISTANCE ASTM D 4355 % 90
AFTER EACH RAIN. APPARENT OPENING SIZE ASTM D 4751 MM US STD SIEVE 0.425 40
FLOW RATE ASTM D 4491 1/MIN/M2 GAL/MIN/FT 2 5907 145
PERMITTIVITY ASTM D 4491 SEC-t 2.1
*Note:All Dandy Sacks'm can be ordered with our optional oil absorbent pillows
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Stabilized Construction Entrance (BMP 40) Drop Inlet Protection Type 1 (BMP 13)
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FASTNER- MINIMUM NO. 10 GAGE WIRE 1. AGENCY COMMENTS 07-28-25
nZ: (4 PER POST REQ'D)
POST SIGN NEAR BASIN
FILTER FABRIC
CONCRETE 1I 4 \�\\\
WASHOUT
ELEVATION \\ / �/ \\
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FILTER FABRIC
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SEASONAL HIGH
< WATER EL.
COMPACTED NATIVE MATERIAL 10961
NOTES:
6"MIN. 1. THE SWPPP COORDINATOR IS RESPONSIBLE FOR PROPER BASIN SIZING. f ATE OF 0 2. IN NO INSTANCE SHALL WATER BE ALLOWED TO DISCHARGE OFFSITE WITHOUT APPROVAL FROM THE �sONDE'N
FABRIC ANCHOR DETAIL RECEIVING AGENCY AND THE IDAHO DEPARTMENT OF ENVIRONMENTAL QUALITY.
NOTES: � 0-7/28/2025
1. TEMPORARY SEDIMENT FENCE SHALL BE INSTALLED PRIOR TO ANY GRADING WORK IN THE AREA TO BE PROTECTED. 9�Fs 3. BOTTOM OF BASIN TO BE CONSTRUCTED A MINIMUM OF 3-FEET ABOVE THE ESTABLISHED SEASONAL
HIGH GROUND WATER LEVEL. Project No.: 121172
THEY SHALL BE MAINTAINED THROUGHOUT THE CONSTRUCTION PERIOD AND REMOVED IN CONJUNCTION WITH THE
FINAL GRADING AND SITE STABILIZATION. 4. REFER TO IDEA BMP NO. 46 (PROVIDED IN APPENDIX OF NARRATIVE) FOR ADDITIONAL REQUIREMENTS. Date of Issuance: 07-28-2025
2. FILTER FABRIC SHALL BE CLASS 1 WITH EQUIVALENT OPENING SIZE OF AT LEAST 30 FOR NONWOVEN AND 50 FOR Project Milestone: PERMIT SUBMITTAL
3 WOVEN. NOTES SWPPP
3. FENCE POSTS SHALL BE EITHER STANDARD STEEL POST OR WOOD POST WITH A MINIMUM CROSS-SECTIONAL AREA OF 1. DIMENSIONS VARY. RESPONSIBLE PERSON SHALL SIZE BASIN APPROPRIATELY.
3.0 SQ. IN. SWPPP Details
Silt Fence Install 1 (BMP 65) Concrete Washout (BMP 49) Temporary Sediment Basin (BMP 66)
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Scale: NTS Scale: NTS Scale: NTS
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