Standard Sampling Manhole - North Davis Sewer …

1 Figure 7-3 North Davis Sewer DISTRICT Industrial Pretreatment Program Standard Sampling Manhole MARKED " Sewer " 6-INCH RING, BUT NOT MORE THAN IF LOCATED IN UNIMPROVED GRADE UNLESS DIRECTED OTHERWISE BY DISTRICTCOLLAR IN PAVED AREAS (SHALL MEET ASTM C-478 standards ) WHEN INSUFFICIENT DEPTH PREVENTS THE USE OF A CONE, A CONCRETE BE USED. PRECAST CONCRETE (SHALL MEET ASTM C-478 SEAL ALL JOINTS WITH RAMNECK OR EQUAL TESTED FOR WATERTIGHTNESS) 30" DIAMETER WITH SMOOTH PRE-CAST OR CAST-IN-PLACE CONCRETE BASE(4000 PSI CONCRETE MIN.)1" MINUS GRAVEL BASE UNDISTURBED NATIVE SOIL NOTES: Sampling SUMP SHALL BE LOCATED DIRECTLY BELOW Manhole AND FLOWMETER SHALL NOT BE LOCATED BELOW Manhole ACCESS OR OBSTRUCT INSTALLATION OF Sampling CONTRACTOR SHALL BE RESPONSIBLE FOR PROPER SLOPE AND CONSTRUCTION OF CONNECTING CONTRACTOR SHALL BE RESPONSIBLE FOR PROTECTION OF EXISTING Sewer AND OTHER UTILITIES, PROPER BACKFILLING, COMPACTING,AND PAVEMENT SHALL NOTIFY DISTRICT 24 HOURS BEFORE INSTALLATION BEGINS.

2 CONTRACTOR SHALL GUARANTEE WORK FOR A PERIOD OF ONE " " OVERHANG12"12" 12"FLUMEFLOWMETER - ISCO FLOWMETER CABLE TO REMOTE READOUT AND FLOWFOR SAMPLER - TO BE INSTALLED ONLY IN manholes 3 -0 - LOCATE AND WITH MANUFACTURER S RECOMMENDATIONSFLOWMETER -INSTALL IN ACCORDANCE WITH MANUFACTURER S SUMPMANHOLE COVERDISCHARGE PIPE -DESIGN AND INSTALLATION BY 3 -0 MIN. -ABOVE SURFACE GRADE AS 30" Manhole RING AND COVER (D&L SUPPLY A-1180, OR EQUAL)GRADE RINGS - A MINIMIMUM OF ONE 18 TOTAL HEIGHT, SHALL BE USEDGROUND SET COVER 6" ABOVE 1'-6" WIDE, 6" DEEP CONCRETE PRECAST ECCENTRIC CONE PRECAST H-20 FLAT LID SHALL Manhole SECTIONS standards ) (ALL JOINTS SHALL BE SHALL BE 5'-0" 1:12 FLOOR SLOPE TROWELED FINISH DROP - 1 MIN., 12 SUMPULTRASONIC TYPE MODEL 4210, OR EQUALCONDUIT FOR SAMPLER PACING SIGNAL FIBERGLASS GRATING SHELF GREATER THAN 8 IN HEIGHTINSTALL IN ACCORDANCE LOCATE AND RECOMMENDATIONS Sampling RING AND INDUSTRIAL USER USERPROJECT NECESSARYCONDUIT