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<br /> February 2002
<br /> w.'hl
<br /> AGE-NC'Project'No: 95! 1.14
<br /> Page4.6f6
<br /> Prior to rimobilization, the soil boring'locations will:be clearly marked.and a utility clearance obtained
<br /> through Underground,Scivice'Alert.' - r
<br /> . 3
<br /> 32._ CPT DRILLING, SAMPLE COLLECTION AND ANALYSIS
<br /> AGE proposes','to drill Up-to teff paired CPT.soil:borings as part of the. site-assessrrient'(Figure 2)_
<br /> Initially,four paired'CPT borings will'be.a.dvanced, one adjacent io MW-6,,two'61 the north side of_
<br /> Harding Way and one.within the SUSD property.. The remaining paired CPT borings Will be advanced`
<br /> following.the interpretation of initial' soil-boring data to allow f6r data,collection which will best
<br /> represent the vertical,and lateral limits of the impacted soil and'ground water.
<br /> r The''CPT borings will be=advanced to-approximately 150 feet bsg utilizing a 25-ton truck-4ii6unted`
<br /> CPT drill rig equipped with,2-incli diameter hollow stem r'ods'.-Grab groundwater,samples Will be
<br /> collected in multiple intervals of porous arnd,permeable material,'limited soil samples may lie;collected
<br /> at selecfed litfioiogy changes.'Ground water and so' sanipk-,i will be analyzed by a Department.of
<br /> Health Services (DHS)`-certified laboratory for:
<br /> Total petroleum hydrocarbons quantified as stoddard solvent (TPH-ss) in accordance with',"
<br /> • EPAMethod.8015 Modified;
<br /> • Volatile aromatic hydrocarbons; benzene;toluene, ethyl benzene and totalxylene(BTEXK in. ;.
<br /> accordance with EPA Method 8020; and r
<br /> •''. ,Volatile organic compounds (VOCs),and.fuel additives: di=isopropyl ether (DIPE), ethyl
<br /> tertiary--butyl ether(ETBE), methyl tertiary-butyl ether(MTBE),tertiary-amyl methyl'et}ier.
<br /> (TAME), 'tertiary butanol (TBA); methariol,'.ethanol,'rethylene dibior'rude (EDB) and 1,2-•• '
<br /> dichloroethane (1',2-DCA) in accordance with EPA Method 8260. .
<br /> Laboratory reports for soil and ground water analysis, testing methods, laboratory.QA/QC reports, '
<br /> and ,sample chain. of. custody' documentation will be. presented-in a,report of findings -'and
<br /> recommendations.
<br /> X 3-?3. REPORT PREPARATION "
<br /> Follow14-the CPT site investigation a�report.wil be:prepared presenting the findings. Each report
<br /> will include a description of work performed and the results of the soil/groundwate'r sampling and- 0:
<br /> analysis;'conclusions and'recommendatioins will also be'included. The 'report'will be in a format
<br /> acceptable to CVRWQCB.guidelines, and,'will'be reviewed and,signed by a'California Registered',
<br /> Geologist.,;
<br /> advanced,GeoEnvironmental ,ine. . L'
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