WORK PLANS - Laserfiche WebLink

Home Browse Search

Table 3 Analytical Data for Grab Groundwater Samples TPH-g,BTEX,and Fuel Oxygenates Former Colombo/Toscana Bakery 1444 South Lincoln Street Stockton,California 95206 Sample Sampling Depth(ft. TPH-g Benzene Toluene Etbylbenzene Xylenes MTBE DIPE ETBE TAME TBA Location Sample ID Date BGS) (µg/L) (}tg/L) (µg/L) (pg/L) (µg/l_) (99/L) (pg/L) (pg/L) (Itg/L) (Pg/L) SB-1 SB-1 2/7/1996 — 180,000 24,000 29,000 4,900 20,000 NA NA NA NA NA SB-2 SB-2 2/7/1996 — 190,000 32,000 41,000 4,500 23,000 NA NA NA NA NA MW-7S MW-7A r 10/27/1997 35 3409000 22,000 29,000 5,800 28,000 <5,000/3,200 <50 <50 <10 <50 MW-7D MW-7B' 10/27/1997 4144 400,000 28,000 41,000 7,100 35,000 3,000/2,900' <500 <500 <100 <500 CPT-1 CPT1-84' 12/29/1997 84 1,400 100 57 14 67 <5 NA NA NA NA CPT-1 CPT!-106' 12/29/1997 106 2,800 260 530 54 250 <25 NA NA NA NA CPT-2 CPT2-32' 12/30/1997 32 <50 0.9 <0.5 <0.5 <0.5 <5 NA NA NA NA CPT-2 CPT2-82 ' 12/30/1997 82 17,000 4,600 370 560 630 <250 NA NA NA NA CPT-2 CPT2-102' 12/30/1997 102 <50 <0.5 <0.5 <0.5 <0.5 <5 CPT-3 CPT349' 12/30/1997 49 5,900 1,100 21 <5 62 <50 NA NA NA NA CPT-3 CPT3-92' 12/30/1997 92 <50 6.3 <0.5 <0.5 <0.5 <50 NA NA NA NA RWQCB ESLs 500 46 130 290 100 1,800 NE NE NE 18,000 Title 22 CCR MCLS NE 1 150 300 1,750 13 NE NE NE NE Notes: TPH-g—Total petroleum hydrocarbons quantified as gasoline. pg/L=Micrograms per liter. MTBE=Methyl tertiary butyl ether. NA=Not analyzed. DIPE=Di-isopropyl ether. NE=None established. ETBE=Ethyl tertiary butyl ether. ft BGS=feet below ground surface. TAME=Tertiary amyl methyl ether. TBA=Tertiary butyl alcohol. 1=Grab groundwater sample collected from inside the hollow-stem auger. 2=Grab groundwater sample collected using a hydropunch sampling tool. 3=The first result is from EPA Method 8020 analysis,and the second is from EPA Method 8260. RWQCB ESLs=San Francisco Bay Regional Water Quality Control Board Environmental Screening Levels for groundwater that is not a current or potential source of drinldng water(February 2005). Title 22 CCR MCLS=Title 22 California Code of Regulations Maximum Contaminant Levels(lune 2004). Pagel ofl