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'1 i S�iN JOAQUI N LOC r. HEALTH DISI I CT SAMPLING PRO'TOCAL FOR ROUTINE TANK REMOVALS The following represents minimum sampling criterion required for closure compliance. .Soil "' samples collected shall be representative of native soils beneath the tank's invert [tank's bottom] at a collection depth not be exceed 2 -- 4 feet. If contamination -, is documented durinq closure an Unauthorized Release notification must be filled out and7 . submitted to SJLHU within 5 bays. Section 2652, CCR. WATER NOT PRESENT. 'I N THE TANK PIT TANK SIZE MINIMUM NUMBER OF LOCATION OF SOIL SAMPLES ; a SOIL SAMPLES Less than 1000 gallons ONE per tank Fill or«npump�end of tank^ 1000 - 10,000 gallons TWO per tank One at each end of tank 10,001 gallons and up THREE OR MORE Ends and Middle or per tank7. general] spaced aloeg Ne length of the taN Piping ONE EVERY 20 LINEAL FEET WATER IS PRESENT IN TANK PIT '; TANK SIZE MINIMUM NO. OF LOCATION OF SOIL MINIMUM NUMBER SOIL SAMPLES. _ SAMPLESOF WATER SAMPLES 10,000 GALLONS From wall next to OR LESS tank ends at soil/ (Single Tank) TWO groundwater ONE interface From wall next to ONE GREATER00 GALLONS tank ends-at soil/ OR TANK CLUSTER FOUR lynterfaceer rf OTI-tER. SPECI.AI� C©NDI TI ONS SLAB PRESENT IN TANK PIT Soil samples shall be obtained beneath the slab within native soils. fi the obstruction will be re Penetration througgh.- obstruction will then allowusampling accordingotoethetabove`nconditions cal removal of fhe , TANK SIZE MINIMUM NUMBF.R'OF LOc:ATION OF SOIL SAMPLES _SOI_L_SAMPLES Less than 1000 gallons THREE per tank', ~ Center and ends or sides 1000 - 10,000 gallons FIVE per tank Center and ends or 's.ides 10,001 gallons and up FIVE OR MORE :per Ends and Middle and tank enerall spaced along Ne length of the tank EH 23 047 12/88 : REVISED 1/89 6 t 4 .