ARCHIVED REPORTS_XR0002514 - Laserfiche WebLink

Home Browse Search

s i y ky TABLE 1 LABORATORY ANALYSES RESULTS FOR SOIL SAMPLES STOCKTON UNIFIED SCHOOL DISTRICT FRANKLIN HIGH SCHOOL HLI 0089003 Locationa Sample Depth TPH-G Benzene Toluene Ethylbenzene Xylenes Total Lead WET OVAc Number (ft) (mg/Kg) (ug/Kg) (ug/Kg) (ug/Kg) (ug/Kg) (mg/Kg) Lead Reading (mg/L) (ppm) B-1 132 10 1920d <2500 <2500 42,000 350,000 12 7 NA >1000 B-1 132R 10 1620d NA NA NA NA 13 7 NA >1000 B-1 134' 20 <0 �15 <1 3 <1 5 NA <0 5 30 B-1 136 30 <5 27 94 9 59 7 3 NA 67 B-1 1368 30 NA 26 96 10 68 NA NA 67 B-1 138 40 0 06 8 10 <1 17 10 6 NA 70 B-1 138R 40 NA 6 7 <1 15 NA NA 70 B-1 150 50 <0 05 20 <1 <1 13 9 3 NA <5 B-2 153 15 <0 05 <1 <1 <1 <1 10.7 NA <5 B-2 154 20 <0 05 <1 <1 <1 <1 9 8 NA <5 B-3 157 15 <0 05 <1 <1 <1 <1 10 7 NA <5 B-3 158 20 <0 05 <1 <1 <1 <1 10 NA <5 I Proposed Soil -- 100 10,000 60,600 175,000 5,000 -- -- Threshold Levels9 A a Refer to Figure 2 for approximate locations of soil borings b Depth below existing ground surface at time of sampling c Concentration in container headspace as measured in the field with a Foxboro Model 12B portable OVA equipped with a flame ionization detector Concentrations are expressed in parts per million (ppm) by volume as methane equivalent d Sample shows the less volatile portion of gasoline e Sample analyzed after expiration of holding time f Higher detection limit due to presence of diesel fuel in sample g Proposed soil threshold levels are based on 100 times DOHS Maximun Contaminant Levels (for benzene, ethylbenzene and xylenes) and Applied Action Levels (for toluene) expressed as ug/Kg TPH-G = Total Petroleum Hydrocarbons as gasoline (Volatile Petroleum Hydrocarbons identified as gasoline) NA = Not Analyzed �4 "<" = Laboratory Limit of Detection "R" = Laboratory Quality Control Replicate