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SIERRA LUMBER CASE#10 • Page 1 of 2 LTCP Checklist GEOTRACKER HOME I MANAGE PROJECTS I REPORTS I SEARCH l LOGOU SIERRA LUMBER CASE 91(70607700185)-MAP TIM SITE OPEN-VERIFlCATIONMONITORING 375 HAZELTON AVE W ACTIVITIES REPORSAN JOAQUIN COUNTY LOP AGENCIES STOCKTON,CA 95203 T SAN"SEWORKER:HARUN KNOLLL) -SUPERNSOR:ADRIENNE ELLSAESSER SAN JOAQUIN COUNTY PUBLIC WEEPAGE CENTRAL VALLEY RWOCB(REGION 5S)-CASE e:590257 VIEW PRINTABLE CASE SUMMARY FOR THIS SITE CASEWORKER:JAMES BARTON-SUPERVISIR:CORI CONDON THIS PROJECT WAS LAST MODIFIED BY NAR1rNI2 I ON 63/201310:59:47 AM-18$jQ$Y THIS SITE HAS SUBMITTALS.CLICK NESE TO OPEN A NEW WINDOW WITH THE SUBMITTAL APPROVAL PAGE FOR THIS SITE. CLOSURE POLICY THIS VERSION IS IN PROGRESS AS OF 5/29/2013 CHECIO.IST IN ATM ON Y292015 CLOSURE POLICY HISTORY General Criteria-The site satisfies the policy general criteria-ctEAR sticnR ANSWERS YES a.Is the unauthorized release located within the service area of a public watersystem VES c NO Nemo of Water System: Calwater b.The unauthorized release consists only of petroleum LtM. r YES f NO c.The unauthorized('primary')release from the UST system has been stopped. r YES r NO tl.Free product has been removed to the maximum extent practicable 18891. r FP Not Encountered r YES C NO e.A Conceptual site model that assesses the nature,extent,and mobility of the release has been developed(info). r YES r NO f.Secondary source has been removed to the extent practicable jhfo. r YES r NO g.Soil or groundwater has been tested for MTBE and results reported in accordance with Health and Safely Code Section r Not Required R YES r NO 25296.15. h.Does a nuisance exist,as defined by Water Code section 13050. C YES r NO 1.MeflaSpecific Criteria:Groundwater-The Contaminant plume that exceeds waterquality objectives is stable or decreasing in areal extent,and YES meets all of Me additional characteristics Grana of f es five Gasses of sites listed below.-CLEAR sEcnR ANsYrERs EXEMPTION-Sell Only Case(Release has=Affected Groundwater-Ir o) C YES r NO Does the site meet any of the Groundwater specific criteria scenarios? R YES C NO 1.1-The Contaminant plume that exceeds water quality objectives is<100 feet in length.There is no free product.The nearest existing water supply well or R VES (' NO surface water body is>250 feet from the defined plume boundary. 2.Media Specific Criteria:Petroleum Vapor Intrusion to Indoor Air-The site is considered low-threat for the vapor-intrusion-to-airpathway ifsile- NO Specific Conditions Satisfy items 2a,2b,Or 2C-CLEAR SEGnON&tlib RS EXEMPTION-Active Commercial Petroleum Fueling Facility r YES r NO Does the site meet any of the Petroleum Vapor Intrusion to Indoor Air specific Criteria scenarios? C YES fb NO 2a-Scenario 4 exam :Direct Measurement of Soil Gas Concentrations YES I.Soil Gas Sampling Locations—No Bioattenuation Zone: VES -Beneath or adjacent to an existing building:Sail gas sample is Collected at least 5 feet below the bottom of the building foundation. C YES C NO -Future construction:The soil gas sample shall be collected from at least 5 feet below the ground surface(bgs). EF YES f NO it.Soil Gas Sampling Locations—with Bioattenuation Zone:The criteria in Column A in the Soil Gas Criteria table(page 5 of the Policy)apply I the following requirements for a bioatlenuation zone are satisfied: -Minimum of 5 feet of soil between the soil vapor measurement and the foundation of an existing or ground surface of future ConsWction. C YES C NO -TPH(TPHg i TPHd)is 1100 mglkg(measured in at least two depths within the 5-R zone) r YES C NO -Oxygen is t 4%measured at the bottom of the Sfl zona C VES r NO ADDITIONAL QUESTIONS-Please indicate only those conditions that do not meet the policy criteria: Soil Gas Samples: I' No Soil Gas Samples R Taken Incorrectly Exposure Type: C Residential C Commercial Free Product: C In Gmuntlwater r In Soil r Unknown TPH in the Bieatlenuatlon Zone: R z 100 mgr g r Unknown r Soil samples not taken at two depths within 5 ft.zone(only for Scenario 4 with BioZone) Bioattenuation Zone Thickness: r<5 Feet(No BiCZone) C z 5 Feet and<10 Feet r z 10 Feet and<30 Feet r z 30 Feet C Soft BioZone Compromised TPH>100mglkg R Unknown 02 Data In Bioattenuation Zone: R No 02 Data r 0214% C 02 z 4% Benzene in Groundwater: r z 100 pg/I and<1,000 pgA r z 1,000 pgll r Unknown Sall Gas Benzene: r z 85 Pg1m3 and<280 9g/m3 r z 280 p9/ms and<85,000 pg/ma rz 85,000 pglm3 and<280.000 pglm3 r z 280,000 P9/m3 r Unknown Soil Gas EthylBermane: r z 1,100 pglm3 and<3,600 pg/m3 r z 3,600 pg/m3 and<1,100,000 pglm3 r z 1,100,000 pg/m3 and<3,600,000 pglm3 C z 3,600,000 pg/m3 r Unknown Soil Gas Naphthalene https://geotracker.waterboards.ca.gov/regulators/screens/closure—Policy.asp?global_id=TO... 7/15/2013