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f Case Closure' Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> III. Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations--Before and After Cleanup <br /> Contaminant Soil (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> er <br /> TPH (Gas) 4700 4700 .290 .290 Xylene 120 120 .004 '<.0005 <br /> TPH (Diesel) 10 1 10 .200 .200 Ethylbenzene 22 22 .002 <.0005 <br /> Benzene 5.7 0.56 0.001 0.0008 Oil a Grease - <br /> Toluene 12.0 12.0 .130 .061 Lead 20 <0.5 <br /> Other Other <br /> t <br /> Comments (Depth of Remediation, etc.) : <br /> G.W. MONITORING/SAMPLING FOR 5 YEARS DEMONSTRATES A STABLE LOW CONCENTRATION CONTAMINANT <br /> PLUME, SEASOIL MODEL SUPPORTS NO FURTHER ACTION. <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 j <br /> Basin Plan? (Yes) No <br /> Does corrective action protect public health for current land use? (Yes). No <br /> Site management requirements: <br /> Should corrective action be reviewed if land use changes? Yes (No) <br /> Monitoring wells Decommisioned: (Yes) No Number Decommisioned: 5 Number Retained: 0 <br /> List enforcement actions taken: NOTICE OF REIMBURSEMENT SENT <br /> List enforcement actions rescinded: <br /> i <br /> V. Local Agency Representative Data <br /> Name:DONNA RAN Title:DIRECTOR, ENVIRONMENTAL HEALTH DIVISION <br /> Signature: �f.� Date: &— <br /> VI. RWQCB Notification <br /> Date Submitted to RB: (1 14 l� �0 RB Response: C�nCc�l�(Q.Y�CQ_ <br /> RWQCB Staff Name: JQmeS_br'X1av8z- Title: a5a e Date: `-( <br /> VII. Additional Comments, Data, etc. <br /> r <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 /> i <br />