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S AN J C)AQU I N L.00AZ� HEAD TH ID I S TR I CT <br />SAMPLING PROTOCAL FOR ROUTINE TANK REMOVALS <br />The following represents minimum sampling criterion required for closure compliance. Soil <br />samples collected shall be representative of native soils beneath the tank's <br />invert [tank's bottom] at a collection depth not be exceed 2 - 4 feet. If contamination <br />is documented during closurean Unauthorized Release notification must be filled out and <br />Lys. submitted to SJLHD within 5 Section 2652, CCR. <br />WATER <br />NOT PRESENT IN THE <br />TANK PIT <br />TANK SIZE <br />MINIMUM NUMBER OF <br />LOCATION OF SOIL SAMPLES <br />From wall next to <br />SOIL SAMPLES <br />OR LESS <br />Lessthan 1000 gallons_...... <br />._.._..._._..._......_ <br />..........ONE ...per <br />._tank <br />..................___............_.............._.._.._.._........._..._......................_.,._... <br />Fill or pump end of tank <br />1000 - 10,000 gallons <br />TWO per tank <br />One at each end of tank <br />10,001 gallons and up <br />THREE OR MORE <br />Ends and Middle or <br />interface <br />per tankgenerall <br />spaced along <br />From wall next to <br />the length of the tank <br />Piping <br />ONE <br />EVERY 20 LINEAL FEET <br />I1,11A0Ci�.'�a;]. .also y <br />TANK SIZE <br />MINIMUM NO. OF <br />SOIL SAMPLES <br />LOCATION OF SOIL <br />SAMPLES <br />MINIMUM NUMBER <br />OF WATER SAMPLES <br />10,000 GALLONS <br />From wall next to <br />OR LESS <br />tank ends at soil/ <br />(Single Tank) <br />TWO <br />groundwater <br />ONE <br />interface <br />GREATER THAN <br />From wall next to <br />ONE <br />10,000 GALLONS <br />tank ends at soil/ <br />OR <br />groundwater <br />TAMC CLUSTER <br />FOUR <br />interface <br />OTHER SPECIAL CONDITION S <br />SLAB PRESENT IN TANK PIT <br />Soil samples shall be obtained beneath the slab within native soils. Penetration througgh <br />the obstruction will be required in order to collect the samples. [Physical removal of the <br />obstruction will then allow sampling according to the above conditions.] <br />TANK SIZE MINIMUM NUMBER OFµ `~LOCATION OF SOIL SAMPLES. <br />SOIL SAMPLES <br />Less than 1000 gallons THREE per tank Center and ends or sides <br />1000 - 10,000 gallons FIVE per tank Center and ends or sides <br />10,001 gallons and up FIVE OR MORE per Ends and Middle and <br />tank enerally spaced along <br />?he length of the tank <br />EH 23 047 12/88 <br />REVISED 1/89 <br />