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soil <br /> • Collect up to six soil samples from each borehole from significan]y different lithologic units as <br /> directed by the field geologist based on CPT results. <br /> • properly package and ship samples to a state-certified Iaboratory'For analysis for chemical <br /> analysis for TPH-gas,BTEX.MTBE,TAME,DIPE,BTBE, and'1-BA. Also ship separate <br /> samples to a certified laboratory for analysis for bulk density and total organic carbon analysis. <br /> Groundwater <br /> Groundwater samples will be collected from boreholes SB-9,SB-10,and SB-11 concurrently with <br /> soil sampling. Groundwater samples will be obtained using a one-inch diameter bailer lowered inside <br /> the barrel of the soil sampling probe. Groundwater grab samples will be obtained from UP-to four <br /> depths at approximately 50, 110, 130,and 150 feet bgs from the three locations.A total of 12 samples <br /> plus 1 duplicate for QA/QC purposes will be collected,if sufficient groundwater volume can be <br /> obtained.The exact sampling depths will be selected by the field geologist based on the CYT <br /> lithologic logs. <br /> • Screen selected deeper groundwater samples using a photoionisation detector or field test kit to <br /> obtain preliminary data on TPH-gas concentrations- <br /> • Analyze for dissolved oxygen (DO) in the field. <br /> • properly package and ship samples to a state-certified laboratory for analysis for TPH-gas, <br /> BTEX, MTBE,TAME, DIPE,ETBE, and TBA. Conduct laboratory analysis for the intrinsic <br /> remediation indicators of nitrate(NO3) and sulfide(SO4). <br /> Schedule and Reporting <br /> Within 2 weeks of the receipt of laboratory data, a brief report will tie prepared which describes the. <br /> methods and results of the investigation. as follows' <br /> narrative describing field activities, including descriptions of QC activities <br /> field measurements ('CPT,surveying.DO,etciNVIRONMENTAL HEALTH DIVISION <br /> 04 E.Weber Ave. Third Floor <br /> tabular summaries of laboratory and field daf O. Box 388, Stockton CA 95201-0388 <br /> Approved.z <br /> laboratory data sheets Denied ❑ <br /> figure showing sampling locations J f Conditions SES b 1 kt,, Jd LY- <br /> ffikb7 Ell - <br /> brief discussion of results Date 0-1 (1 by <br /> 60pe oe j0p_ PUPISaD is <br /> Uj g0tam 64 vt*/00 w1 coMDi-VI 6 <br /> uP1�t>�9 <br /> 5uwvt= NF Ksbpv- <br /> 3. ­bEgRA?e Ln/ ocfr (. MOM)" <br /> 6Z AlVRL>491S a- P03 Soy. 4' OL flo, <br /> 4. C4L_T1 ft o� 911_ k 4ftI4"Dv/)`h-M <br /> 2 OF lgtAAaXlfkJ WW ST he D15('wfe <br /> DISCO WORKPLAN VA.DOC <br /> 1Jt`fEa'Iblk. 92iN10e DbSY+iL6 <br /> S, "(w fi;5& W llk 1� 1t-0/m i fS <br /> 09/29/98 TUE 13:25 [TX/RX NO 75571 <br />