Laserfiche WebLink
III. Release and Site Characteri ion Information (continued) 4� <br /> Maximum Documented Contaminant Concentrations --Preliminary and Subsequent Soil Investigations <br /> Contaminant Soil Subseq Water Subseq Contaminant Soil Subseq Water Subseq <br /> Prelim. Investi- Prelim. Investi- Prelim. Investi- Before Investi- <br /> (in ppm) gation gation (in ppm) gation gation <br /> TPH (Gas) 691 <0.4 ---- ---- MTBE <0.005 <br /> TPH (Diesel) 16,700 2.57 ---- ---- Oxygenates---- <br /> ---- Oil 8 Grease -•-- <br /> <0.005 <br /> <0.150 <0.005 ---- -•-- Mineral Spirits <br /> Benzene ---- ---- ---- <br /> <0.005 <br /> Toluene <0.150 <br /> Ethylbenzene 0.536 <0.005- Heavy Metals ---- ---- ---" '--- <br /> Xylenes 2.740 0.0058 ---- Lead ---- ---- ---" --'- <br /> Comments (Depth of Remediation, etc.): Tanks were removed between 1989 and 1997. Investigation shows limited soil <br /> contamination in the area of UST 1 and 7 and remote piping areas. Beneficial uses of groundwater are protected now and <br /> in the future. <br /> IV. Closure <br /> rSite <br /> completed corrective action protect existing beneficial uses per the Regional Board Basin Plan? Yes <br /> completed corrective action protect potential beneficial uses per the Regional Board Basin Plan? Yes <br /> corrective action protect public health for current land use? Yes <br /> anagement requirements: none <br /> Should corrective action be reviewed if land use changes?Yes <br /> Monitoring wells decommissioned: No Number Decommissioned: 0 Number retained: 0 <br /> List enforcement actions taken: NOR sent <br /> List enforcement actions rescinded: None <br /> V. Local Agency Representative Data <br /> Name: Do Heran Title: Director of Environmental Health <br /> Signature: Date: p._2_00 <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: March 23, 2000 Response Date: May 8, 2000 <br /> RB Staff: Marty Hartzell Response: Concurrence for closure. No further action <br /> Title: Assoc. Eng. Geologist required <br /> VII. Additional Comments, Data, etc. <br /> Soil only. This site is closed with no further action required. <br /> This document and the related CASE CLOSURE LETTER,Shall be retained by the lead agency as part of the <br /> official site file. (08124193) Exhibit N Page 2 of 2 <br />