ARCHIVED REPORTS_XR0012702 - Laserfiche WebLink

Home Browse Search

ear to be present in this area at the 9 feet below surface r� Soil contamination does appSB-2, SB-4, and soil/groundwater interface (approximately roducts at this depth. grade) . Samples collected from soil bbon Ps SB-1, Mw_1 all contained petroleum by depth of g feet SB-2, and SB-4. Concertrations ranged TpHq was detected at elevated concentrations at a r. GP cess of 1000 in soil borings MW-1, agencies. 100 from 3.6 ppm to 5100 ppm• Concentrations of y rB ulatory ically required to be remediated to g is shown in Ppm are typically extent of TPHg contamination Section. The estimated6lat�PHg The estimated vertical Figure r Figure 5, TPHg Concentration Cross1s given in extent of TPHg contamination Concentration plan Map. depth of 9 feet Concentrations ranged from TPHd was detected at elevated andoSBe2. cone tr a ns in soil borings MW-1, SB-i, re ulatory agencies. a 6.0 m to 360 ppm• Soiis with concentrations of TPH in excess o 100 ppm may be required to be remediated by The estimated contamination is illustrated The estimated vertical extent of 'FPCr is shown in Figure 8, TPHd in Figure 7, TPHd CHdccontamination ss Section. lateral extent of TP Concentration Plan Map. ere ed s MW-1, SB-1, and BTEX constituents Benzene f 9 feetuinesoil bcaingcte o 2000d at 1ppbtin concentrations at a depth o ed from 150 ppb t b to 1400 Toluene concentrations ranged from 170 l SB-2, Benzene concentrations ran established .for these borings. No clean-up level has been Figure 9, Benzene Ppb in these borings. In the PSection, the estimated vertical resence of Benzene Cross s• and Toluene G Figure 10, extent of these constituents is illustrated. ishshown iintdlai:eral extent of Benzene and Toluene contamination Benzene and Toluene Concentration Pian Map' lenes were detected at depth of 9 feet in soil borings MW-11 BTEX constituents Ethylbenzene and Tota y elevated concentrations at a lines and SB-4• lbenzene concentrations in these borings ranged from b to 20,000 ppb. Concentrations b Total clean-uo ranged from 15 js ed from 35 ppb to 33,000. Pp in these borings rang For. the presence (I Ett of. these ze two or level has been established •• Eth lbenzene and Total Xylenes Total Xylenes in soils. The 11te vertical bonze exaeextent ofthese constituents is shown in Fig',':The estimated lateral e lbenzene and Concentration Cross Section' two constituents is illustrated in Figure 12, Y Total Xylenes Concentration Plan Map- -n of the Concentration of 34 ppm and 66 ppm oil and Grease was also detected in the northwestern p depth of-9 feetr,cop . soil borings SB-2_ and SB-4, - were rre orted t a iin samples from were rep The distribution.of ail and Grease in the subsurface respectively• oil and Grease Concentration Plan Map• is shown in Figure 13, PAGE 18 275 GRANT LINE ROAD