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SAMFLLNG PROTOCOL FOR ROUTINE TANK REMOVALS <br />4 , • • <br />The Following reoreseats minimum sampling criterion required for closure compliance. Soil samples collected shall be <br />reoreseatative of native soils beneath the tank's invert (tank's bottom) at a collection depth not to exceed _' - 4 feet. If <br />contamination is documented during closure, an Unauthorized Release NOtlilcatioa must be completed and submitted within <br />five (5) working days. California Health & Safety Code, Section 25295. <br />WATER NOT PRESENT IN THE TANK PIT <br />?�N{ I (Gallons) ons) I of SOIL A. �LESSIZE INIMN134MA ER I LOCATION OF SOII. SAMPLES II <br />WATER IS PRESENT IN TANK PTT <br />TANK <br /># <br />< 1,000 I <br />1 per Tank <br />Fill OR Pump End of Tank <br />MMMUM NUMBER of <br />WATER SAMPLES <br />14C0 - l0,cC0 <br />I 2 per Tank <br />I 1 at each End of Tank <br />From wall next to tank <br />> 10,r'CO <br />3 or More <br />per Tank <br />Ends and lAiddle OR generally <br />spaced along the length of the Tank <br />WATER IS PRESENT IN TANK PTT <br />TANK <br /># <br />I TAINK SIZE I <br />(Gallons) <br />MLNDv9_T�1 NUMBER <br />of SOIL SAMPLES <br />LOCATION of SOIL <br />SAMPLES <br />MMMUM NUMBER of <br />WATER SAMPLES <br />< 1,0Co <br />< 10,CC0 <br />Center and Ends OR Sides of Tank <br />From wall next to tank <br />1,000 - 10=0 <br />i <br />Single Tank <br />2 <br />ends at soil/ gouadwater <br />1 <br />Ends and )Nliddle and generally spaced along <br />the length of the Tank <br />interface <br />> 10,000 OR <br />From wall next to tank <br />Tank Cluster <br />4 <br />ends at soil <br />1 <br />groundwater interface <br />SLAB PRESENT IN THE MNK PIT <br />Soil samples shall be obtained beneath the slab within native soils. Penetration through the obstruction will be required in <br />order to collect the samples. (Physical removal of the obstruction will allow sampling according to the above conditions.) <br />TAN-,< <br /># <br />TANK SIZE <br />(Gallons) <br />MLNafUvI NUMBER <br />of SOIL SAMPLES <br />LOCATION of SOIL SAMPLES <br />< 1,0Co <br />3 per Tank <br />Center and Ends OR Sides of Tank <br />1,000 - 10=0 <br />5 per Tank <br />Center and Ends OR Sides of Tank <br />> 10,000 <br />5 OR More per Tank <br />Ends and )Nliddle and generally spaced along <br />the length of the Tank <br />PIPING AND STOCXP= <br />PIP SOIL SAMPLES <br />1 Sample every 20 lineal -feet <br />TANK & PIPLNG STOCKPILE SAMPLES <br />2 Samples every 50 cubic yards <br />EH 23 047 (RW 4/23/91) <br />Page 7 <br />