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site Hstosy �ockeford, +
<br /> 14000 H,ghway BS,
<br /> Time fJ)t Propert7+NO p4-049
<br /> acted soils
<br /> ssrn -A t 19 was perfiormed to assist in determining the extent of imp of the
<br /> i or survey vapor robes to depths of up to 13 feet in the vicinityofthe
<br /> On Aug
<br /> ust 26, 1992, a soil vap or samples from each probe
<br /> riy amps and charcoal tubes were used to collect vap round
<br /> It
<br /> A pnQurnatic hammer was used to drive 13 sol ch camp ust below the g
<br /> Vacua p ea le was submitted of hardpan�te mobile tab wherel3
<br /> farmer tanks Due to the presence deeper than
<br /> varsous depths immediately after
<br /> clhromatograph
<br /> was extracted and injected into a gas Survey were limited, as no probes could be advanced deep
<br /> surface, the results of the sari vapor or extraction
<br /> feet s and install 3 vap extraction
<br /> a drill ng was used to advance 4 soil banng an to app
<br /> September 28, silts were
<br /> During the week of Sep ells During Dense silty sands and sandy
<br /> field activities, sorlum sa found to consist of hardpan
<br /> was not
<br /> wells and 3 vapor inlet w loose fine to med
<br /> 15 feet, this strata ed underlain at depths bof 30 to 35 feet to the extent of the bonngs
<br /> generally encour field activities
<br /> encountered during ger indicated by field instrument tlon
<br /> was
<br /> ,,veCe term+noted at a depth of 40 feet while SB-2 0 feet
<br /> each location was continued S81 hYdracarbans were no tort
<br /> W4 was installed to 30 feet and
<br /> Drilling at s 5B-1 58-2, and ar extraction wells, and
<br /> Accordingly, borings W5 and W6 were ins#aped to 40 feet,
<br /> Wells W3, were installed as 4" diametereach well was constructed
<br /> advanced to 45 feet feet Wells W1, 2,, W3Its Ajthough
<br /> V>l2 was installed to 45 �� diameter vaporWiling�well dep#h and field observations
<br /> W W4, W5. and W5 were installed as 2
<br /> using 0 020 slatted casing, screened+ntesva{s vaned depending
<br /> a! zed for TPH, BTEX, and
<br /> e submitted for analysis bases on an yid screening and visual
<br /> er
<br /> les from each boring wen Each sample w
<br /> Three 5orl same les were submitted from ►N3 } generally limited to the area of the former
<br /> Dnly 2 same depth of 15
<br /> observation ( fide Results indicated that sod contamination was
<br /> m feet to 35 feet The highest concentrations
<br /> from a depts`"/eSs
<br /> ethylene dibra depth of 34 W2, and SB-2 r' p
<br /> tanks and aRpeared to exist at a dep 1 SB-2}, les collected at 30 feet contained less
<br /> indicated in 30-foot sampies Cc ppm from W ( contained trace to
<br /> 3{10 pprn gasolene, however, s and W5
<br /> 1 and W3 contained ies SB-4, W4, W5,
<br /> feet in SB- SampieS callected�from ples collected from depths of 40 feet to 45 feet contarne
<br /> than 10 ppm gasoline None of t
<br /> concentrations of contaminantsNone
<br /> or its constituents , and W3 to evaluate
<br /> detectable concentrations Of g riot test was performed oT�W, HN2
<br /> or extraction p The results of the study indicate thato r�iate for site
<br /> After the Installation of the Ors can
<br /> wdiation by lls, a vapor
<br /> extraction or extraction appears to be app p
<br /> the feasibility of in-situ remewells and that vap
<br /> be easily extracted from the existing
<br /> remediation eared that irYlpacted sails were limited to the oil samples tank
<br /> anon, A app depth of 30 feet Although Several of the sodally
<br /> hydrocarbons, SB-4, 1N4, W5, and W6 g
<br /> Based on the results of the site mvestrg conCentrataons of hY and south of the tanks
<br /> excavation and the more dense s trace�untered at a dep est,north,
<br /> southwest,
<br /> submitted for analyses can a ropna#e regulatory agencies an May
<br /> defined the extent of soil contamination to the wit forwarded to the app a workplan for an additional
<br /> sessment Report was nested that
<br /> A copy of Canenie s Site As 1993, the pHSlEHD req
<br /> 25, 1993 In their reply dated June 18,
<br /> n to verify the extent of sail cor+tarr'+inatlor►be submitted
<br /> investigatia
<br /> Additional Environmental
<br /> r 19 SECOR) "Wortcplan, sal of the
<br /> I A vii s- oration's ( 1993 The 9
<br /> W rk 1 f r A i n ineerin9 Analysis Corp a encres on October 20,
<br /> of Science and Eng ro nate regulatory g
<br /> A copy " was 'O'w to the app p
<br /> lnvestigatran
<br /> 2
<br />
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