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Page 1 of 2 <br /> t ILTN CAL#6981 • <br /> GEOTRLKER NOME R Jul LOLT�`�I�dI °O <br /> Gd OPEN-EUGISLEFOR CLOSURE <br /> LTCP Checklist <br /> UNOCAL#6661(70607700142)-MAP THIS SITE J R ERmas 121]133 <br /> T Gurl COUNTY LOP(LEAD)-CASE If SAND <br /> 4707 PACIFIC AVE T Y TFC REPORT SUPERVISOR:ADRIENNE ELLSAESSER <br /> CASEWOFKER:II AM OINA <br /> STOCKTON CA 95207 CENTRAL VALLEY RWOCB(REGpN 5S)-CASEY: R'CO <br /> PIIRI_Il'.LHEBPAGE CASEWORKER:muES BARTON-SUPERVISOR:LORI LONDON <br /> SAN JOAQUIN COUNTY <br /> SCUF Lkim M:9090 LUF PtlorM1y Msi9netl:° LUF Amoun[Paltl: <br /> �IMMARY FOR IS � <br /> THIS PROJECT WED AS LAST MODIFIBY A'" <br /> ucunFRSON ON 9rnA1ROV20133:311VAL PAGE FOR THIS SITE <br /> I T <br /> THIS SITE HAS SUBMITTALS.CDLK kii TO OPEN A Now WINDOW WITH THE SUSMITTAL . YHI9TORY <br /> NECKL <br /> CIST INITIATED ON]/31/2013 <br /> CLOSURE POLICY THIS VERSION IS FINAL AS OF 8/7/2013 vas <br /> ANSWERS <br /> General Criteria-The site satisfies the policy general Onions-CLEAR_ <br /> r YEB C NO <br /> a.Is the unauthorized release located within the service area of a ublic water s stem? <br /> No of wow Syscem: Catwater r YES O NO <br /> b.The unauthor¢ed release Consists only of petroleum Dntm C YES O NO <br /> c.The unauthorized('primary')release from the UST system has been stopped. OO FP Not Encountered C YES O NO <br /> d.Free product hes been removed to the maximum extent practicable 11OL01 6 YES O NO <br /> e.A conceptual site model that assesses the nature,extent,and mobility of the release has been tleveloped 'n o. C YES O NO <br /> L Secondary source has been removed to the extent practicable idgl. C Not Required C YES O NO <br /> g.Soil or groundwater has been tested for MTBE and results reported in aCCO with Health and Safety Cade Section C YES r NO <br /> 25296.15. <br /> C tl I' n 13050. <br /> h.Does a nuisance exist,as tle0netl by YES <br /> TIM AH <br /> 1.Media-SpeciFc Criteria:Groundwater-The contaminant plume that exceeds water quality objectives is stable or decreasing in areal extent,a C YES OO NO <br /> meets all Of the additional chafecteristics of one of the five classes of sites listed below.- <br /> EXEMPTION.Soil Only Ca"(Release be."oo Affected Groundwmer-UAOI (•1 YES O NO <br /> PI a supply well or r YES C NO <br /> Coes the site meet any of me Groundwrtar water <br /> quality <br /> Rc criteria os is <br /> 000 L.The dissolved concentration of <br /> 12-The Contaminant plume that exceeds water quality obleclrves is<250 teal in length.Thera is no free roducl.The nearest existing water su p Y <br /> surface water body is 11,000 feet from the defined plume boundary.The dissolvetl concentration of benzene is<3, pal <br /> MTBE is-i,000 pglL: NO <br /> 2.Media Specific Criteria:PeVoleum Vapor Intrusloin to Indoor sir The site is considered low-threat for the vapor-intmsion-to-airpethwaydsC YES �' NO <br /> speoifiL Conditions satisfy Items 2a,26,or 2c- <br /> EXEMPTION-Active Commercial Petroleum Fueling FdGillly C YES OO NO <br /> Does the site meet any of the Petroleum Vapor Intrusion to Indoor Air specific criteria scenario-? <br /> AOOITIONAL QUESTIONS-Please indicate only those conditions that do not meet the policy Criteria: <br /> Soil Gas Samples: Taken Incorrectly(; <br /> O No Soil Gas Samples <br /> Exposure Type: <br /> C Residential C Commercial <br /> Free Product: O Unknown <br /> O In Groundwater O In Soil <br /> TPH In the Bicattenuatkin Zone: <br /> O z 100 mgOtg r Unknown O Soil samples not taken a!two depths within 5 ft.zona(only for Scenario 4 with BioZone <br /> <5 Fe <br /> O z 5 Feet and<10 Feet C z 10 Feet and<30 Feel O z 30 Feet Ci 30ft BioZone Compromised TPH>100mglkg r UnAv <br /> krxn <br /> BloatZone Thickness <br /> O<5 Feett((No BioZone) <br /> 02 Data in Bioaftenuation Zone: <br /> r No030ata 002<4% 00224% <br /> Benzene in Groundwater: O z 1,000 911 O Unknown r,100 pall and<1,000 P911 p <br /> Soles z 65 palms and<260 palms OZ 200 palms and<65,000 pgIM3 O z 85,°00 pglm3 end<280 000 palms O z 280,000 p�m3 C Unknown <br /> Soil Gas Pgenzand: 100,000 pglm3 O z 1,100,000 P�m3 and<3,600, <br /> 000 Pg/m3 O z 3,600,000 Pgri r Unknown <br /> O z 1,100#altos and<3,600 palms O z 3,600 palms and<1, , <br /> Soil Gas Naphthalene: 3 C z 310 Pglm3 and<93,000 p91m <br /> 3 O z 93,000 pg/m3 antl<310,000 p4lrn3 O z 310,000 p9lr^3 r Unknown <br /> C z 93 Pglm3 antl<310 palm NO <br /> 3.Media Specific Criteria:Direct EcrldaCtANand EOuWoor Rir Exposure-The Sitars considered low4hreat for direct contact and outdoor air exposure <br /> I f it meets 1,2,Or 3 below.- C YES Cl NO <br /> EXEMPTION-The upper West of soil Ion"of petroleum contamination C YES C NO <br /> Does the site meet any of the Direct Contact and Outdoor Air Exposure criteria scenarios? <br /> ADDITIONAL QUESTIONS-Please Indicate only those conditions Iha[do not meet me policy others: <br /> Exposure Type: <br /> httl)s:Hgeotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=T06... 8/7/2013 <br />