ARCHIVED REPORTS_XR0010741 - Laserfiche WebLink

Home Browse Search

CALCULATION OF GALLONS OF CONTAMINATION IN SPECIFIED VOLUME OF SOIL CLIENT The Southland Corporation SITE 9110 Thomton Road,Stockton,CA DATE 10/09/95 G•(((A"O'OVID'e))M1 Estimated current mass of adsorbed petroleum hydrocarbons based an soil analytical results and PID readings Reference Figure for delineaton of areas around boring K trench sample 2 and boring P The following assumptions were used 6Qnea X I>omt 2 Bonne P TPH-G not detected(<1 0 mgNg) but STEX was detected 2100 mg/kg TPH-G detected in Trench 2 sample Based on historical and current anatyftal results and PID readings from borings (max concentration 0 055 mgN) Estimated TPH-G TPH-G<1 rngAsg in Trench 1 sample Defintion A,G J O and P and from monrtDdrvg wells MW 1 MW-4 MW 17a and MW 20 the concentra"n at 0 2 mglkg from 25 to 40 feet extending outward around trench sample provided by confirmation following residual TPH-G concentrations were estimated for given depths and in a 10 foot radius(314 R12 area) Definition around bonngs F G J and M(January February 1993 distances from boring P boring K provided by confirmation borings E F L and M August 1995) Based on analytical results and PID concentrations in m c (January 1993 August 1995)and tank pit excavation readings assumed 2100 mglkg to 0 5 feet below trench radius fmm boring samples(September 1991) and 500 mg/kg from 0 5 to 10 feel below trench Depth(It) 0 3 3-7 7 12 Assumed impacted area Is 15 feet long and 3 feet wide 18.20 500 50 5 20-23 2600 260 26 23-25 500 50 5 25-30 100 10 1 30-35 1 35.37 100 10 1 Bonng Trench Trench Boring Boring Boring Bonng Sonng Boring Sonng Boring Boring Boring Boring Boring Boring Boring Boring Bonng K 2 2 P P P P P P P P P P P P P P P P COMTAMWANT TPH-0 TPH G TPH-0 TPH G TPH-G TPH-G TPH G TPH-G TPH-G TPH-, TPH-G TPH-G TPH-0 TPH-G TPH-G TPH-G TPH-G TPH-G TPH-0 X CONTAMINANT CONCENTRATION(ppm) = 02 2100 500 500 2600 500 100 1 100 50 260 50 10 10 5 26 5 1 1 D AVERAGE SOIL DENS"(1bsFlt"3) = 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 M MASS OF I GALLON OF CONTAMINANT(Ibs) = 65 65 65 65 65 65 65 65 65 65 65 65 65 65 85 65 85 65 65 A IMPACTED AREA(11"2) 7 314 30 30 2826 2826 2826 2826 2826 2826 1256 1256 1256 1256 1256 270 270 270 270 270 H HEIGHT OF iMPACTEO AREA(ft) = 15 05 05 2 3 2 5 5 2 2 3 2 5 2 2 3 2 5 2 RESIDUAL TPH-0 G GALLONS OF CONTAMINANT = 002 063 0 IS 0 S6 437 056 029 000 011 015 144 025 012 Cos 005 0.12 005 003 001 9.86 ❑ W GROUNDWATER ❑EJL1 TECHmmy .a