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16 October 1997 - <br /> AGE-NC Project No. 96-0232- <br /> ''Page <br /> 6-0232'Page 2 of 5 <br />' 2'3. SOIL'SAMPLE COLLECTION <br /> =Discrete soil samples were'continuously-cored-from P-1'and P-2.utilizing'd Geoprobe Macro-core <br /> sampler with 36-inch acetate;sleeves; soil samples were continuously cored from P-3 utilizing a'60-' <br /> : - <br />'r - inch macro-core'sarri ler. Discrete soil sam les were collected from P-4 at 5-foot intervals beginning <br /> - ; p p . <br /> at a depth of 10.feet bsg'utilizing a California split spoon sampler•and pre-cleaned 2-inch by 6-inch <br /> Fliras§•sleeves:'Discrete soil samples.were collected from P-5 at five-foot'intervals beginning at a depth <br /> of 10 feet bsg utilizing a'Geoprobe soil,sampling assembly,loaded with*pre=cleaned 1.125=inch by 6 <br /> inch brass sleeves. :z <br /> Selected soil samples:were�preserved from P'1 through P.:5'by covering both;ends,of a 6-inch_-sleeve, ' <br /> section with Teflon sheets andplastic'end caps avid sealing with'duct tape. Preserved-sample sleeves 'f <br />' were Iab'eled-with sample location, depth,'time, date and with <br /> initials. The samples were placed <br /> in a chilled container and transported under chain-of-custody to McC ampb ell.Analytical•Incorporated <br /> (&W),.a California state-certified laboratory. Selected soil samples were analyzed fol- rnethyl-tertiary <br /> butyl ether•(MTBE), tertiary butyl alcohol (TBA), di-isopropyl ether(RIPE); ethyl tertiary butyl ether <br /> (ETBE),,and tertiary amylmethyl ether (,TAME),in accofdance-wiffEPA method 825o: <br /> 2.4.- GROUND WATER SAMPLE COLLECTIOW ' <br /> Grab ground water samples were collected from-P-"1 through P-5-utilizing•a g '.u <br /> hydro= nch technolo ' <br /> P . Y , <br /> A hydra-punch water assemblywas;advanced to a depth just--'above the water table utilizing hollow,. <br /> steel'rods, and driven past th`e.lead auger bit.into undisturbed materials.approximatelyr five"feet-below: -: <br /> the water table The hollow steel rods were then'retracted upward approximately five feet, (hereby, . <br /> exposing a.stainless'steO screen to groundwater. A bailer',with new nylon rope.was manually inserted i <br /> :through the hollow-'steel rods•and;into the. exposed screen; and,a grab-water sample collected. ' <br /> Suf icient sample,was collected from each soil boring to. ill at least,one.40-m1 EPA-approved VOA <br /> vials,containing 0.5 ml.18% hydrochloric acid as.;a.preservative.'Ground'water sample containers <br /> were labeled with sample location;date, time, and samplers initials : . <br /> Following collection and labeling.of'each grab•ground water.-sample, the sample was-immediately ' <br /> pl'aced'in''a chilled container. Each.sample was'logged,on a.chain-of-custody form and transported' , <br /> to'MAI for_analysis'of MTBE',.TBA, DIPS, ETBE`and TAME'in accordance with EPA method <br /> 8260: . <br /> 2.5 BORING LOGS <br /> Darin drilling activities descri tions of sample du' licates`were.recorded on boring' to gs,usin' the <br /> g' g p p p g g g - <br /> ' Advanced GeoEnAronmcntal,Inc. <br />