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\A J <br /> v <br /> Ms. Vicki McCartney <br /> June 10, 2003 s <br /> Page 2 r <br /> The proposed locations of 14 hand augered soil sampling locations are shown in Figure 2. <br /> Sampling will be performed sequentially at each location. Once the ground surface <br /> (sod/asphalt/concrete) has been penetrated(cored or broken through) a hand augered borehole <br /> will be commenced. An augerhole will be advanced to a depth of three (3) feet and a drive <br /> sampler will be used to collect a soil sample,(approximately 1.5-inch by 3-inch). The auger will <br /> then be advanced to approximately five (5) feet and a sample will be collected. The process of <br /> two-foot advancement and soil sampling will be repeated until first groundwater is encountered. <br /> Soil samples will possibly have been collected at depths of 3, 5, and 7 feet. (groundwater is <br /> anticipated to be encountered at a depth of around 6 to 8 feet). As they are collected the soil <br /> samples will be labeled and stored in an ice chestimaintained at the temperature available from <br /> its also containing ajid bed of crushed ice placed'there at the start of the sampling day. The ice <br /> was not allowed to completely melt before it wMs replaced. The two lower soil samples from <br /> each augerhole will be logged onto a Chain-of-Custody form. <br /> The chain-of-custody form will include the request for analysis by U.S. EPA Method 8260FAB <br /> for total petroleum hydrocarbons in the gasoline range(TPH-gasoline or TPHG), for the volatile <br /> aromatic hydrocarbon compounds(benzene, toluene, ethylbenzene, and total xylene isomers), <br /> and for the Fuel Oxygenates: tertiary-Butyl alcohol(TBA);Methyl tertiary-butyl ether(MtBE); <br /> Di-isopropyl Ether(RIPE);Ethyl tertiary-butyl ether(EtBE);and tertiary-Amyl methyl ether <br /> (TAME). Samples and chain-of-custody documentation were then delivered to STL San <br /> Francisco (CA DHS ELAP#2496) of Pleasanton, California. <br /> A report will be prepared detailing the results of the present investigation and will incorporate <br /> information from the aforementioned Parker reports and the groundwater monitoring reports. <br /> Please do not hesitate to email h2ogeolna,attbi.com or call the undersigned at 925-373-9211 <br /> and/or t4at92 -9222 should you have an ions. <br /> GD GgOSincerel �OGARY D.Lo'lJE` .� �vGARY D.Gary D. , 8), C.E.G. (1559) No,'W Na 127 <br /> CERT''. a I\ CiERmm �A <br /> C.HG. (127) * EfN3"aC E0:;0. 3 <br /> 5T 0 <br /> Principal,Hydrogeologist <br /> H20GEOL A GroundWater Consultancy � 0�GAl�,�1�r 0;Z <br /> Xc: <br /> Mr. John Johnson, The Customer Company, 4457 Park Road, Benecia, CA 94510-1124 <br /> California Regional Water Quality Control Board, Central Valley Region, Sacramento, <br /> Main Office, 3443 Routier Road, Sacramento, California 95827-3098 <br /> Mr. Robert Mathews, More for Less, 3336 Bradshaw Road, Suite 280, Sacramento, <br /> California 95827 <br /> H2OGEOL A GROUNDWATER CONSULTANCY <br />