ARCHIVED REPORTS XR0009408 - Laserfiche WebLink

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1[3/02/2990 12 00 O'MELVEvY & M)EFS L A 217 669 "467 F 12 - mom Pro Phase II 'Ewmwiwiul Property Assessment Page: 6 1 During the on-site sample collection conducted on January 24, 1990, seven (7) shallow subsurface soil samples were collected from approximately 15 foot of depth. These samples were coLected by California split spoon sampler. These samples are identified as &l through 3-7 (Figure 3 & 5). ' Sample �sNg.MM=Mmatioiiwas roximately '.5 foot east of the fuel dispensing island. During encountered from approximate y of ' dcp u z4 v. C 1G .lLi�li.l W vi ds �aea were y an on-site mobile laboratory. The analytical results from the sample collected at the bottom of the bonng indicates that 1,500 parts per million ' (ppm) on diesel hydrocarbon, and 170 ppm gasoline hydrocarbon were detected. No benzene, toluene, ethyl benzene, or xylene were detected other samples collecte��(Appen non-detected for the aforem h rocad-x This shallow subsurface investigation has detemuned that heavy soil contamination does exist on the subsurface due to an unauthorized release of petroleum hydrocarbons from the pump island. Further investigation of the subsurface will be ' necessary to determine the lateral movement of the: contammadon. Also a question of impact to ground water San Joaquin County Local Healtn Distract has no pending action to this matter except the tank permits. 1 ' ==S1 ' ' It is the o=on of the writer that the investigation has discovered only a single location at the fueling station that has imp try' an esagaaon be necessary i your organization wishes to pursue this pure Be. Fun er, g w the county or city sewerplant wou re eve the requirement or treatment of both eompmssor and boder blowdown waters. Finally, have the domestic water system serviced by a licensed company. The conclusions of this report are based on facts and information available as of the date of the field work. Activities conducted at this site after this date should employ good environmental practices to maintain current conditions and environmental status. I