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Case closure Summary Page 2 , <br /> Leaking Underground Fuel Storage Tank Program . <br /> III. Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant (ppm) <br /> and After Cleanup <br /> m Contaminant Soil (ppm) Water (ppm) <br /> Contaminant Soil (ppm) Water (pp ) Before After Before After <br /> Before After Before After <br /> .016 .016 <.0005 <.0005 <br /> TPH (Gas) 7 .4 7 .4 <.0005 c.0005 Xylene .009 <.0005 <.0005 <br /> TPH (Diesel) 22,000 22,000 .130 <.050 Ethylbenzene .009 <br /> Benzene <.005 <.005 <.0005 <.0005 oil & Grease <br /> c.005 <.005 <.0005 <.0005 Heavy metals <br /> Toluene Other <br /> Other <br /> n attempt was <br /> comments (Depth <br /> of Remediation, <br /> and ined)notRtolpose dual aeft threatgtotgroundwater he oqualitY. Soil <br /> further characterized <br /> contamination in the basement area was characterized only. Soil before/after were the <br /> highest concentrations in either the basement or sidewalk area (see tank summary) <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board <br /> Basin Plan? (Yes) No <br /> ect potential beneficial uses per the Regional Board <br /> Does completed corrective action prot <br /> Basin Plan? (Yes) No <br /> Does corrective action protect public health for current land use? (Yes) No <br /> Site management requirements: None <br /> Should corrective action be reviewed if land use changes? Yes (No) <br /> Monitoring wells DecOmmisioned: Yes No Number Decommisioned: 3 Number Retained: 0 <br /> List enforcement actions taken: NOR sent 4/22/91 and 9/20/91. PHS/EHD correspondence <br /> dated 3/11/94. <br /> i <br /> List enforcement actions rescinded: none <br /> i <br /> V. Local Agency Representative Data <br /> Name: Donna Hera Title: Director of Enviro nt Health j <br /> :01)ate: Z� <br /> Signature: <br /> VI, RWQCB Notifica ion <br /> Date Submitted to RB: 2/12/96 RB Response: <br /> RWQCB Staff Name: Gordon Boggs Title:Program Coord. Date: <br /> VII. Additional Comments, Data, etc. Dennis Dunn <br /> The soil contamination characterized in the basement area was estimated by <br /> RG#4242 of IT as 16 cu.yds with ave. cone. of 12,036 ppm TPH-D and not expected to pose <br /> a threat to groundwater. The soi---------------- <br /> 1 contamination in the sidewalk area was estimated by <br /> Dennis Dunn as 78 cu.yds with ave. cone of 2440.65 ppm TPH-D and not expected to pose <br /> a threat to groundwater. The cone. evidenced attenuate rapidly with greater depth. <br /> This document and the related CASE CLOSURE LETTER, Shall be retained by the lead agency. <br />