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- <br /> 15 June 1999. ' <br /> AGE-NC Project No..98 0534. <br /> Page 5 of'13 <br /> Y <br />:=E 3A.. °,_ PRE-FIELD'WORK ACTIVITIESmw <br />_ _ baa -. .. ._ ."• _`�F --: ^' _`.. -, .. " `.'." ._ -i,. !µ , <br /> A health and safety plan will_be'prepared in accordance with Occupational Sdyety and Health. -' <br /> Guidance Manual for Hazardous YYaste 5ite.Activities{National Institute for Occupational Safety <br /> 4' w and•Health Administration, U.S. Coast Guard.and U.S Erivirorimental Protection Agency,:1985).. <br /> - Prior to mobilization;the area of excavation will be clearly.marked and an utility clearance obtained 3, <br /> through Underground Service Alert. <br /> } 3.2. SOIL SAMPLE-COLLECTION AND-ANALYSIS <br /> _ Initially, AGE ' roposes"to advance ten-soil'probe borings using direct push-technology(DPT)in the' <br /> vicinity of the former .UST area:to evaluate the lateral'arid vertical-_extent ofvthe petroleum <br /> - hydrocarbon ijbpact on so>l and ground water. Proposed probe:boring locations are illustrated in <br /> Figure 2. <br /> The.'proposed probe boring Locations many be modified due to field observations or addition_ al. _ <br /> boxings may.be advanced with approval l y the PHS: . Eight proposed'probe borings,will to be =_ <br /> advanced to 20 feet bsg:-Two pro ;.borings will be=advanced to.35 feet bsg or until the field <br /> observations and field:screenirig,'using an organic vapor.monit ' (OVM) indicate that detectable <br /> petroleum vapors are not,presehf-in the soil'samples screened,from,:two consecutive five-foot 's <br /> - intervals. fiM. <br /> ' fl Y f <br /> Soil samples will be collected at 5=foot'intervals beginning at 10 feet bsg extending to the total probe <br /> boring depths and-soil sainples will be'col lected from continuous,cores,from the probe.boring.north%.' <br /> of the.former UST beginning at 5'feet bsg. <br /> Field procedures-for advancement_of probe borings,acid collection of soil samples are,presented in <br /> Section 4.:1.1 r Selected soil samples from each probe boring will be submitted-for laboratory analysis 4' <br /> = with concurrence of the.._PHS-EHD..-The selected soil samples--will--be analyzed by.a State of <br /> California Department of Health Services (DHS)-certified laboratory for the following constituents _ - <br /> TPH d byEPA'Method 8015 Modified;, <br /> TPH-g.by EPA-Method 80-15 Modified; <br /> • BTEX by EPA Method 8020; and. <br /> f <br /> . <br /> Fuel,oxygenates-including MT_ BE, TBA;DIPE-rETBE and TAME by EPA_Method-8.260. L <br /> U - <br /> Laboratory reports for soil-analyses, testing methods,_laboratory quality assurance/quality controls ., 'A <br /> Y . '(QA/QC) reports, and sample chain.of custody documentation will,be presented in a report with <br /> Adnaitred GcAnviron mental,Inc s 1 <br /> ;' <br />