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11/02/2001 10:47 9166813631 GEOFON INC PAGE 09 <br />M <br />SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS <br />Che following represents minimum sampling criterion required for closure compliance_ Soil samples collected shall be <br />exceed 2 - 4 Feet. If contamination <br />representative of native soils beneath the tank's invert (tank's bottom) at a collection depth not to <br />is documented during closure, an Uiiautborized Release Notification must be completed and submitted within five (5) working days <br />pursuant to California Health & Safety Code, Section 25295. <br />TANK TANK, SIZE <br /># (Galion) <br />:!L 1,UUU <br />1,000-10 <br />> 10,000 <br />WATER N& P"SENT IN THE TANK PTI+ <br />MINIMUM NUMBER <br />of SOIL SAMPLES <br />1 PC Tats <br />2per�Tank <br />3 or More <br />per Tank <br />KNZ-1] <br />LOCATION OF SOIL SAMPLES <br />Fill OR Pum End of Tank <br />1 at each End of Tank <br />Ends and Middle OR generally <br />spaced along the length of the Tank <br />PIPING SOIL SAMPLES I Sample every 20 lineal feet <br />TANK & PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br />WATER IS PRESENT LN TANK PIT <br />SIZE MINIMUM NUMBER LOCATION of SOIL MINIMUM NUMBER <br />TAMC TANK <br /># (Gallons) of SOIL SAMPLES SAMPLES of WATER SAMPLES <br />< 10,000 <br />2 from wail next to tank <br />1 <br />Single Tank 3 <br />ends at soitlgroundwater <br />interface & 1 below tank <br />�^ <br />4 from wall next to tank <br />> 10,000 OR <br />ends at soiVgroundwater 1 <br />Tank Cluster 5 or more <br />interface & I below each <br />tank <br />SLAB PRESENT IN THE TANK PIT <br />Soil samples shall be obtained beneath the slab within native soils. Penetration through the obstruction will be required in order to <br />collect the samples. (Physical removal of the obstruction will allow sampling according to the above conditions.) <br />TANK I TANK SIZE <br /># (Gallons) <br />MINIMUM NUMBER <br />of SOIL SAMPLES <br />3 r Tank <br />5 per Tank <br />5 OR More per Tank <br />tH 73 046 (Revised 08113199) Page 7 <br />LOCATION of SOIL SAMPLES <br />Center and Ends OR Sides of Tank <br />Center and Ends OR Sides of 'Tank <br />Ends and Middle and generally spaced <br />along the length of the Tank <br />