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