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V11 ,TAl h* SAN OOAQUIN LOCAL HEALTH DISTRICT SAMPLING PROTOCAL FOR ROUTINE TANK REMOVALS � The following represents minimum sampling criterion required for closure compliance. Soil samples collected shall be representative tion ppof native soils beneath the tank 's cont invert (tank 's t k 'sdbottom) atring aecoea Unauthorizedth nRelot easexnot�lflcatloo must beffilled mout tand Is submitted to SJLHD within 5 days. Section 2652, CCR. WATER NOT PRESENT IN THE TANK PIT TANK SIZE MINIMUM NUMBER OF LOCATION OF SOIL SAMPLES SOIL SAMPLES Less than 1000 _9alloru ONE�e �Eer+k Fill C— I0 - 10,000 gallons per to at each end .of tank 10,001 gallons and up THREE OR MORE Ends and Middle or per tankgenerally spaced along the length of the tank Piping --- ONE ----- EVERY 20 LINEAL FEET — WATER IS PRESENT IN TANK PIT ---- ----------------------------------- TANK SIZE MINIMUM NO. OF LOCATION OF SOIL MINIMUM NUMBER SOIL SAMPLES SAMPLES OF WATER SAMPLES 10,000 GALLONS From wall next to OR LESS tank ends at soil/ (Single Tank) TWOgroundwater ONE interface GREATER THAN From wall next to ONE 10,000 GALLONSI tank ends at soil/ ORgroundwater TANK CLUSTER- — —FOUR — interface - -- --- ---- OTHER S PEC I AL CONDITION S SLAB PRESENT IN TANK PIT Soil samples shall be obtained beneath the slab within native soils. Penetration through the obstruction will be required in order to collect the samples. (Physical removal of the obstruction will then allow sampling according to the above conditions. ] TANK SIZE MINIMUM NUMBER OF LOCATION OF SOIL SAMPLES SOIL SAMPLES Less than 1000 gallons THREE per tank Center and ends or sides 1000 - 10,000 gallons FIVE per tank Center and ends or sides 10,001 gallons and up FIVE OR MORE per Ends and Middle and tankGenerally spaced along the length of the tank EH 23 047 12/88 REVISED 1/89