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i' <br /> SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS <br /> s <br /> The following represents minimum sampling criterion required for closure compliance. Soil samples collected shall be <br /> representative of native soils beneath the tank's invert (tank's bottom) at a'jcollection depth not to exceed 2 - 4 feet. If <br /> contamination is documented during closure, an Unauthorized Release Notification must be completed and submitted <br /> within five (5) working days pursuant to California Health & Safety Code, Section'25295. <br /> i <br /> NATER NOT PRESENT IN THE TANK Prr <br /> I� 1 <br /> TANK TANK SIZE MINIMUM NUMBER LOC -n-6N OF SOIL SAMPLES <br /> # (Gallons) of SOIL SAMPLES <br /> < 1,000 1 per Tank Fill OR :IPump End of Tank <br /> 1,000 - 10,000 2 per Tank 1 at each End of Tank <br /> r <br /> oZ > 10,000 3 or More Ends and''Middle OR generally <br /> a- per Tank spaced along the length of the Tank <br /> ,t <br /> PIPING AND STOCKPILE <br /> -07 a, PIPING SOIL SAMPLES 1 Sample every'�20 lineal feet <br /> TANK & PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> �3 <br /> WATER IS PRESENT IN TANK,PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL MINIMUM NUMBER of <br /> # (Gallons) of SOIL SAMPLES SAMPLES WATER SAMPLES <br /> < 10,000 From wall next to 'hank <br /> Single Tank 2 ends at soil)groundwater 1 <br /> interface �{ <br /> > 10,000 OR From wall next to ;tank <br /> ij <br /> Tank Cluster 4 ends at soil/ 1 <br /> ,t <br /> groundwater interface <br /> k <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 <br /> order to collect the samples. (Physical removal of the obstruction will allow}sampling according to the.above conditions.) <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL SAMPLES <br /> # (Gallons) of SOIL SAMPLES <br /> 3� <br /> < 1,000 3 per Tank Center{and Ends OR Sides of Tank <br /> 1.000 - 10,000 5 per Tank Center,!and Ends OR Sides of Tank <br /> > 10,000 5 OR More per Tank Ends and Middle and generally spaced along <br /> the length of the Tank <br /> ;i <br /> EH 23 047 (Revised 7/10/42) Page 7 �} <br /> 4 , <br />