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ARCO #0595 Page 1 of 2 <br /> Path to Closure Plan Go �,CK_1`•'-"A"OO-"-`T` FEP98I51 SEARCH ILSS [L <br /> OPEN-SIlEA35E35aR:NT <br /> ARCO 0595(T060TT00319)-MAP THIS SITE <br /> 6100 HWY 99 N FRONTAGE ROADCLEANUP RSIGHT AGENCIES <br /> ACTIVITIES REPORT SAN JOAQUIN CWNTY LOP(LEAD)-CASE a 070 <br /> STOCKTON,CA 95212 CASEWORI(ER: ^ELILASANnOVA(MARIN-SUFERwSOR:AORIENNEELLSAESSER <br /> SAN JOAQUIN COUNTY PBI N�BPA- <br /> CENTRPLVALLEYRWCCB(REGION So)-CASEA 391R: <br /> CASEWORaER:JAMES TO -SUPERWSOR:CO <br /> RI CON0.N! <br /> OR Site Da:NOT SPECIFIED <br /> THIS PROJECT WAS USi MODIFIED BY NL H NOC ONIM{R2m52.18 M PM-jJ(6T= <br /> TIIS SIM HAS SUBMITTALS.CLICK gF.@f.TO OPEN ANEW WINDOW WITH THE SUBMITTAL APPROVAL PAGE FORTHW SITE. <br /> Path to Closure Plan <br /> THIS VERSION IS FINAL AS CF4V?M6 PATH TO CLOSURE MRTORY Cl FAR I REART PAM TO CLOSURE <br /> IMPEDIMENT 1: <br /> General Criteria A:The uneuModzetl releaw Ia NOT located within Ms servlu area of a Wblle water ❑ Proeadural Impediment-pgg <br /> system <br /> totly thin <br /> 1-9th 1:- COMPlET1ON MTE <br /> Cu¢entio Min site is located Stockton <br /> the county'elm o1 influence and thea are m protected plans for <br /> xatton into the City o1 Stockton public tate[supply system, to Which <br /> a cess is located to across the PROJECTED DAM <br /> 89D2015 <br /> fceermy app[oximately 500 feet. AP/wnvultant sill tats sl,ox site can be=cloaetl under StateBoard[c <br /> v.•n1..el M Od-Ia ase. <br /> —Pa's-A >Ranfrv.+l-..IAN in.... _ <br /> aoo 4Dortwlat STEP <br /> IMPEDIMENT 2: <br /> Stedia-Sps,cific Criteria:Gdwate:The contaminant plume that exceeds water quality objectives is r Pmeredurallmpediment-IyEg <br /> NOT stable or decreasing in areal extent,and does NOT meet all of the additional characteristics of one of <br /> the five Classes of sites. <br /> Conditions Mat do not meet the policy criteria: <br /> • Plume Length(That Exceeds Water Quality Objectives):2100 Feet and<250 Feet <br /> • Nearest Supply Well(From Plume Boundary):5 250 Feet <br /> to sews 2- 1 - DATE <br /> Currently 110/9/20131 thin site is 1n one p.._A.of sheI...he An Sva Pilot Leet to be sGetluletl at a <br /> later GatRe has been contacted for star" upLte se of 9/9/2013. sabil set to consultant AAAm9 tor e. <br /> status this data 9/9/2013. Data obtained fc ,installation o£sve Wells and the pilot teat• 1£already 1111Zm4 'Il1'Y1014 <br /> m <br /> mM.vtM.A.hnut ....el Pl..tl nn en.the,1..f..n..daA_.........M in.nasal ea_..w1s•efnn.n..nl nae... <br /> b Rxdw 2- x:- COk4LE1101l MTE <br /> intensely <br /> of SVS pilot telt report alone that the sue sells ate tscreened5fe 54-69 feet bey, but the t at <br /> be <br /> lntemees iase. Uri soil is rate. <br /> Were tram nee sorters 9tetle to 25 feet hay, locally[0 40 feet beg, ety fiTlO2J15 <br /> pilot Leet ma very'tee Were apptox 69CID/day and ID9 lb/tley LPN: apP , .1 to be a high c covery <br /> ser..e.....w.la.•ne..mm1=fmn..v..-sne...er+ s.. ♦n <br /> f•ADD GaORIOXAL 9TEp P <br /> IMPEDIMENT 3: <br /> 4 M C i ' :P t I V I t t Indoor Air:The site is NOT considered low4hreatfor I_I Procedurallmpe111ment-MM <br /> Me vapor4rdrusion-to-air pathway and site-specific conditions do NOT satisfy Items 2a,2b,or 2D. <br /> Conditions Mat do not meet the policy criteria: <br /> • TPH in Me Bioadenuation Zone:2100 mg/kg <br /> • Bioattenuation Zone Thickness:<5 Feet(No BioZone) <br /> • 02 Data in Bioattenuation Zone:No Of Data <br /> • Soil Gas Benzene:Unknown <br /> • Soil Gas Ethyl Benzene:Unknown <br /> • Soil Gas Naphthalene:Unknown <br /> IO Resdw isspediereent 3-Sb 1:- COkPlETH1N DATE <br /> 91[e ie no longer an active sa[Wire.tattoo- so AP/consultant moat tlm-snatiate An acceptable level of PROWECTED DATE <br /> rick is not exceedetl on she alta for vapor intrusion of Prefer—..[recuse action(.) to add'sv the <br /> leave. f✓!B'N15 <br /> [. .nil na. .amass nA In N..mY..tasty Iahn.•tnrv.re.nlf..fmw..hl. M. w�ALIDR10Nudl1E•fll. <br /> IMPEDIMENTA: <br /> Media Specific Criteria,Dict Contact and Outdoor Air Exposure:The site is NOT considered low4hreat G Procedural Impediment-MEG <br /> for direct contact and outdoor air exposure as it does NOT meet 1,2,or 3. <br /> Conditions Mat do not meet the policy Criteria: <br /> • Exposure Type:Utility Worker <br /> • Petroleum Constituents in Soil:5 5 Feet bgs <br /> • Soil Concentrations of Benzene:P,14 mg/kg <br /> • Soil Concentrations of ElhylSenzene:>69 mg/kg and 5134 mg/kg <br /> • Soil Concentrations of Naphthalene:Unknown <br /> • Soil Concentrations of PAN:Unknown <br /> • Area of Impacted Soil:Unknown <br /> stetoResolve Impediment 4-SM 1:- --- <br /> COMPIE'ItON DATE <br /> Re/=nnamcanc mn.c aewnectate an a=mptable leval of risk is not a,—,—on the Wife Bar direct <br /> _of and eaP.Wu.to oncaoet air or moat Ptopo'tot[.=tine —ti—P, to seat... the Laue. <br /> til gals ueDATe- shallot sollaaoele. collected and analyzed; preliminary results appear to be N3NLBIB <br /> .M.....Wath ,.n..e.,. .M hl..na,.a ...m11——i——1 ant. <br /> ADD ADORMAL STEP <br /> CLOSEOUT ACTVITES FOR CASE IN OPEN-ELIGIBLE FOR CLOSURE <br /> pN01K P.t0iC PAT ON WELL nEeTRYCTIOX WASTE dePoOxL laBQ1MP <br /> FOR LCDagRE•° ti4g]ygEIMDGiEgi����cMme�kuvnaerF_ ..rmr���stalSDgnaeu-�— <br /> 'Dab Idudlaedbl Clogsum6MedaYtMcaws1 sehanmdto"Open-EII91defolelwula' <br /> "Sea Closure rate Is the date He case slat's changed b"Compluvd-Caw Closed" <br /> Sava Form as Pamall Com letetl Save Formas Com tete <br /> https:Hgeotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=T06... 4/6/2015 <br />