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Nail.E4 m tial} urd Gruvudu rrLr III tir,hF it ( mc-p r,C it N N. ' (13'UI'rufu tir NIOLklon CA I aur v) 21 1991 I'rbc 7 ' laboratory) the soil samples %ill be anahzed using U 5 CPA Methods and California-approved method~ folloN%i ng quality as5urancc inLa,,ures Laborator\ analyses are dlscusud 1n SLLtIOfi 1 S 3 4 SINIULPROBE SANIFUNG ' The 5 foot long, split spoon simpler Evill be used iii the saturated zone from the water table to a total depth of approvrniat(.ly 70 feet bgs to investigate the lithologic profile of the site The vertical distribution of contaminants (if present) within the saturated zone will bi- Investigated b\ using a ' Simulprobe sampling, device The Simulprobe sampling dc\ice «ill be dtployed nn plate of the spht- spoon sampler to collect soil arid vround%%ater simples at signifrcantl\ different litholotgacal zones in the saturated zone It is anticipated that no more than three Simulprobe soil and ground tater samples \%III be colleLtcd from the saturated zone The sampler \N ill be cleaned before collecting each Sample u-ing ' the procedure described in Section 3 3 above Once the borehole has been drilled to the planned depth the Simulprobe sampler will be fitted xi Ith three ' brass tube- much like a California split-spoon and then hammered into the formation to retrieve a soil sample Tlne Simulprobe also has an integrated groundwater sampling systenn that through a filter screen N\ill allo\% groundNNater to enter the sampler at the same depth the soil N%ill be collected from A polyprop)leve sheath placed around the sampler prior to deployment N\it l pre\ent the entrance of I grouiid\�ater from above the desired sampling depth The sheath Ni ill break NN hen the sampler iti hammered into the formation The filter screen will be exposed to the formation b\ Pulling tine samplLr up apprommately three inches The water \\ill be routed throu�_h the sampler and past the soil Samples «ith Teflon tubine into a (,roundwater collection chamber The sampler iN ill then be raised to the surface on drill stem dissassembled and the soil and groundwater samples removed Each ground,,Nater sannplc «ill b( gravith drained from the device into the sample containers Samples N%ill be handled in accordance N\ith the -tandard procedures described above In Section > ; of this report 35 LABORATORY ANALYSIS The Soil samples collected from the horin<g- will be ana]Nzed for TPH-G bN Method 5030/1-UfT for Benzene Folii(.ne Cth}1 Buizcne arid Xylene (BTEX) EPA Method 8020 and for gasoline oyygenates/additive,, by 1 PA Method 8260 The gasoline o\vgcnafes/additne- include tifetiivl teitiarv- Butyl Ether (M FBE) Ethanol tertiary-Butanol D1-isoprop\l ether (DIPC) EthN I tertlarN-Butyl Ether (ETBE) and tertiar\-amyl Methyl Ether (TAMEI fhe �(aroundwatcr sampler collected from the Simulprobe. will be anal}zed for TPl l-G by Method 50 ti0/LUC'F for BTEX b. EPA Method 602 and for gasoline oxygenates/additives by EPA Method 8260 The, anaMical methods acid analy tical detection limits are presented in Table 1 CONDOR I