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CGeolo 1cal?echinics inc. �✓ %%0011 Page 2 Soil Boring Installation Work Plan Murray Project No.675.2 November 6, 1998 for geologic properties, discoloration, and any unnatural odor as observed in the drill cuttings that are removed during the drilling process. Scarred Floor One hole will be cored through each of the two concrete patches. Hand auger drilling methods will be used to drill two boreholes to a depth of approximately 10 feet bgs. The boreholes will be logged for geologic properties, discoloration, and any unnatural odor as observed in the drill cuttings that are removed during the drilling process. At the bottom of the hole a drive shoe with a clean brass tube will be driven to collect a soil sample. The soil samples will be sealed with Teflon foil and capped with plastic end caps, labeled and placed in a cooler at 4° Celsius for transport to the laboratory following Chain of Custody protocol. Upon collection of the bottom hole sample the boreholes will be closed with a neat cement grout containing less then 4 %bentonite. Possible Former UST Assessor's records indicate that there was a UST related to building 2. It is reported that in the late 1970s a small diesel UST was removed from the area approximately 20-25-feet south of the truck ramp on the southeastern potion of the Property. Permits were not issued nor was soil testing performed. It is proposed to drill two to three hand auger boreholes to a depth of approximately 10 feet in the area indicated by the Assessor's record and representatives of Murray Industrial Properties to have contained the former diesel UST. The boreholes will be logged for geologic properties, discoloration, and any unnatural odor as observed in the drill cuttings that are removed during the drilling process. At the bottom of the hole a drive shoe with a clean brass tube will be driven to collect a soil sample. The soil samples will be sealed with Teflon foil and capped with plastic end caps, labeled and placed in a cooler at 4° Celsius for transport to the laboratory following Chain of Custody protocol. Upon collection of the bottom hole sample the boreholes will be closed with a neat cement grout containing less then 4 %bentonite. The local regulatory agency will be notified 48 hours prior to commencing work. The subsurface will be cleared of underground utilities by notifying Underground Service Alert. 2.2 Soil Analyses It is proposed that a total of five soil samples, one from each borehole, be submitted for the following analyses: Soil samples will be submitted to a California State Certified Laboratory and analyzed for benzene, toluene, ethylbenzene and xylene (BTEX by EPA method 8020), total extractable petroleum hydrocarbons analyses (TEPH-Diesel, Kerosene, Dielectric & Motor Oils, by EPA method 3540/8015m). The detection limits for these compounds are listed below. DetectionLimits: BTEX TPH-U oi (pg/Kg)