MARKER CATCH BASIN 3-01
MARKER
CATCH BASIN
3-01
CURB INLET
3-02
INFILTRATION TRENCH
3-03
SILT TRAP TEE AND
3-04
DEPRESSION DETAIL
FOR CATCH BASINS
STORM
3-05
MANHOLE COLLAR
3-06CHAMBER DETAIL
STORMWATER
D
E
PAVEMENT LAYER (DESIGNED
BY SITE DESIGN ENGINEER)
C
A
*TO BOTTOM OF FLEXIBLE PAVEMENT. FOR UNPAVED
INSTALLATIONS WHERE RUTTING FROM VEHICLES MAY OCCUR,
INCREASE COVER TO 30" (750 mm).
SE
E
TA
BLE
1
B
ENBEDMENT STONE SHALL BE A CLEAN, CRUSHED
AND ANGULAR STONE THAT MEETS THE CHAMBER
MANUFACTURES SPECIFICATIONS.
3-07AND MAINTENANCE
CHAMBER INSPECTION
SUMP DEPTH TBD BY
SITE DESIGN ENGINEER
(24" [600 mm] MIN.
24" (600 mm) HDPE ACCESS PIPE REQUIRED
USE FACTORY PRE-CORED END CAP
TWO LAYERS OF GEOSYNTHETICS 315WTM WOVEN
GEOTEXTILE BETWEEN FOUNDATION STONE AND
CHAMBERS 8.25' (2.51 m) MIN WIDE CONTINUOUS
CATCH BASIN
OR
MANHOLE
COVER PIPE CONNECTION TO END
CAP WITH NON-WOVEN GEOTEXTILE
STORM WATER CHAMBER
END CAP
MAINTENANCE ROW DETAIL
NTS
OPTIONAL OBSERVATION PORT
INSPECTION & MAINTENANCE
STEP 1) INSPECT MAINTENANCE ROW FOR SEDIMENT
A. OBSERVATION PORT (IF PRESENT)
A.1. REMOVE/OPEN LID ON INLINE DRAIN
A.2. REMOVE AND CLEAN
FILTER IF INSTALLED
A.3. USING A FLASHLIGHT AND STADIA ROD, MEASURE DEPTH OF SEDIMENT AND RECORD ON
MAINTENANCE LOG
A.4. LOWER A CAMERA INTO MAINTENANCE ROW FOR VISUAL INSPECTION OF SEDIMENT LEVELS
(OPTIONAL)
A.5. IF SEDIMENT IS AT, OR ABOVE, 3" (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3.
B. ALL MAINTENANCE ROWS
B.1. REMOVE COVER FROM STRUCTURE AT UPSTREAM END OF MAINTENANCE ROW
B.2. USING A FLASHLIGHT, INSPECT DOWN THE MAINTENANCE ROW THROUGH OUTLET PIPE
i) MIRRORS ON POLES OR CAMERAS MAY BE USED TO AVOID A CONFINED SPACE ENTRY
ii) FOLLOW OSHA REGULATIONS FOR CONFINED SPACE ENTRY IF ENTERING MANHOLE
B.3. IF SEDIMENT IS AT, OR ABOVE, 3" (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3.
STEP 2) CLEAN OUT MAINTENANCE
ROW
USING THE JETVAC PROCESS
A. A FIXED CULVERT CLEANING NOZZLE WITH REAR FACING SPREAD OF 45" (1.1 m) OR MORE IS
PREFERRED
B. APPLY MULTIPLE PASSES OF JETVAC UNTIL BACKFLUSH WATER IS CLEAN
C. VACUUM STRUCTURE SUMP AS REQUIRED
STEP 3) REPLACE ALL COVERS, GRATES, FILTERS, AND LIDS; RECORD OBSERVATIONS AND ACTIONS.
STEP 4) INSPECT AND CLEAN BASINS AND MANHOLES UPSTREAM OF THE SYSTEM.
RECOMMENDED)
FABRIC WITHOUT SEAMS