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i <br /> _2_ t April 9, 2008 <br /> Teichert and Son , - <br /> Claim No. 51- - ! <br /> • <br /> SOIL TYPES: interbedded acid intermixed sand, silt, and clay, predominantly fine <br /> grained <br /> B. Monitoring Well Information <br /> Well Designation Date Installed rt, Screen Interval Most Recent DTVII <br /> feet figs)' Dec 07 <br /> MW-1 <br /> Oct 01 ?-43 Dry i <br /> MW-13 . Oct 01: <br /> 9-64 45.26 <br /> MW-14 Oct 01 ?-77 45.30 <br /> c.07 9-73 <br /> MW <br /> -15 Dec_'07 45.20' <br /> - <br /> MW-16 . Dec'07- ?-73 44.28 . <br /> MW-17 Dec 07 ?-74 44.27 <br /> MW-18 Dec 07 ?-90 43.96 <br /> MTBE THREAT CLASSIFICATION:X .g " <br /> • <br /> LAND USE DESIGNATION: residential and commercial r <br /> • ESTIMATED WATER QUALITY OBJECTIVES (WQO'S) FOR SITE:. Per the <br /> Quality Control'Plan Basin'Plan)for the Sacramento River Basin and the <br /> Water Quay (Bas <br /> San Joaquin River.Bashi-(Fourth Edition): ` <br /> v..E. - .. . - <br /> IV. MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS <br /> it mg/kg) PRGs Water u L WQOs <br /> Contaminant So <br /> Maximum, Latest _ Residential Industrial Maximum Latest - (uglL) <br /> (mg/kg) '(mg/k Dec 07 <br /> TPH- NA NA, NA NA 11,000 3,000 5 <br /> 14 TPH-d NA 'NA NA NA NA NA 49 <br /> Benzene NA NA 0.64 1.4 68 3.6 _ 0.15 <br /> Toluene NA NA 520 520 74 7.1 42 <br /> Eth benzene NA NA 400 400 160 25 29 <br /> 4 X lenes NA NA 270 420 580 93 , 17 <br /> MTBE NA NA 32 70 _ 13 . '0.77 5 <br /> TBA NA NA NA NA 65 ND 12 <br /> 1.2-DCA, NA NA . NA NA 63, 63 0.5 <br /> Lead NA NA .. 400 .. 0 800 NA . .NA 15 <br /> .�-_ <br /> PCE NA NA 17 130 - .. -.. -..NA'- NA.._ 0:06.... <br /> TCE NA NA 01 k 110 NA NA 0.8 <br /> PRGs USEPA Region 9 Preliminary Remediation Goa!s <br /> MCL Maximum Contaminant Levels w <br /> AL Action Level <br /> NA Not Analyzed,Not Applicable,or Data Not Available' <br /> WQo. water Quality Objectives <br /> V. FREE PRODUCT: none identified <br /> Vf. SOIL AND GROUNDWATEkREMEDIATiON ' <br /> A. Soil Excavation: unknown volume excavated to a depth of 30 feet <br /> II <br /> CaliforriiQErevirorrmentalProdeclion.�get�cy <br /> P.p1 Recycledpaper <br />