COMPLIANCE INFO_FILE 9 - Laserfiche WebLink

Home Browse Search

SAMPLINSOTOCOL FOR ROUTINE TANK REMALS 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 to exceed 2 -4 feet. If contamination is documented during closure,an Unauthorized Release Notification must be completed and submitted within five (5) working days pursuant to California Health & Safety Code, Section 25295. WATER NOT PRESENT IN THE TANK PIT TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOIL SAMPLES # (Gallons) of SOIL SAMPLES < 1,000 1 per Tank Fill OR Pump End of Tank 871- 1,000-10,000 2 per Tank 1 at each End of Tank D1U1 > 10,000 3 or More per Tank Ends and Middle OR generally spaced along the length of the Tank PIPING AND STOCKPILE 1 PIPING SOIL SAMPLES 1 1 Sample eve 20 lineal feet 1 TANK& PIPING STOCKPILE'SAMPLES' 1 2 Samples every 50 cubic ards WATER IS PRESENT IN TANK PIT TANK TANK SIZE MINIMUM LOCATION of SOIL MINIMUM NUMBER # (Gallons) NUMBER of SAMPLES of WATER SAMPLES SOIL SAMPLES < 10,000 From wall next to tank Single Tank 2 ends at soil/ 1 groundwater interface > 10,000 OR From wall next to tank Tank Cluster 4 ends at soil/ 1 oundwater interface SLAB PRESENT IN THE TANK PIT Soil samples shall be obtained beneath the slab within native soils. Penetration through the obstruction will be required in order to collect the samples. (Physical removal of the obstruction will allow sampling according to the above conditions.) TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL SAMPLES # (Gallons) of SOIL SAMPLES < 1,000 3 per Tank Center and Ends OR Sides of Tank 1,000- 10,000 5 per Tank Center and Ends OR Sides of Tank > 10,000 5 OR More per Tank Ends and Middle and generally spaced along the length of the Tank EH 23 047(Rev 7/10/92) 7