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e Closure summary Page 2 <br /> Leaking eerground Fuel Storage Tank Propam <br /> III. Release and Site Characterization Information (continued) <br /> FlMlaximumented Contaminant Concentrations--Before and AfterCleanup <br /> Soil (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> 3900 3900 34.0 .520 Xylene 760 760 4.3 .0024 <br /> 260 260 0.3 <0.3 Ethylbenzene 130 130 .84 .0014 <br /> 7.4 7.4 3.2 <.0005 Oil & Grease 280 20 2.0 2.0 <br /> 120 120 1.6 - <.0005 Lead 12 12 <br /> Other MTBE - - .051 .045 <br /> Comments (Depth of Remediation, etc.) : <br /> SOIL OVEREXCAVATION WAS TO GROUNDWATER. SOME RESIDUAL SOIL HYDROCARBON REMAINS ON <br /> EASTERN PORTION OF SITE UNDER SIDEWALK. MTBE HAS MIGRATED DOWNGRADIENT OFF SITE. <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board <br /> Basin Plan? (Yes) No <br /> Does completed corrective action protect potential beneficial uses per the Regional Board <br /> Basin Plan? (Yes) No <br /> Does f <br /> ective action protect public health for current land use? (Yes) No <br /> Site gement requirements: OFF SITE CONTAMINATION EXISTS ON EAST SIDE OF FACILITY UNDER <br /> CITY RACY SIDEWALK. <br /> i <br /> Should corrective action be reviewed if land use changes? (Yes) No <br /> Monitoring wells Decommiaioned: (Yes) No Number Decommisioned: 5 Number Retained: 0 <br /> I <br /> List enforcement actions taken: <br /> SENT NOTICE OF REIMBURSEMENT TO RESPONSIBLE PARTY; FIRST LEVEL OF ENFORCEMENT. <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: DONN RERAN Title:DIRECTOR OF ENVIRONMENTAL HEALTH DIVISION <br /> Signature: Date: S <br /> 16- <br /> VI. RWQCB Notification ! <br /> Date Submitted to RB: �� 3 C( (P RB Response: C&I,\(LO, rely\. 1 <br /> RWQCB Staff Name: ,, &-a'AoVde Title:�6$6, C:�X _ (neo Data: ( I1 <br /> VII. Additional Comments, Data, etc. i <br /> 3 <br /> i <br /> i <br /> f <br /> This document and the related CASE CLOSURE LETTER, Shall be retained by the lead agency <br /> as part of the official site file. (08/24/93) <br /> Exhibit N Page 2 of 2 <br /> J <br /> i, <br />