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Case Closure Summary Page 2 <br /> Leakiz underground Fuel Storage Tank 11 ;ram <br /> III. Release and Site Ch- accerization Information (continued, <br /> Maximum Documented contaminant Concentrations--Before and After Cleanup <br /> cont-4---t Soil (ppm) Water (PPB) con*A+*;^Ant Soil (ppm) plater (PPB) <br /> Before After Before After Before Aftar Before Aftar <br /> TPE (Gas) ---- ---- ---- ---- Xylene 8.7 0.490 ---- 2.3 <br /> TPS (Diesel) 25,000 4,100 ---- 5,600 Ethylbenzene 1.0 0.191 ---- 0.31 <br /> Benzene <0.250 0.053 ---- 0.97 Oil & Grease ---- ---- ---- ---- <br /> Toluene <0.250 0.011 ---- .0 LEAD metals ---- ---- ---- ---- <br /> MTBE ---- ---- ---- ---- Other <br /> Comments (Depth of Remediation, etc.) : <br /> OVER EXCAVATION REMOVED BULB OF CONTAMINATED SOIL. REMAINING SOIL CONTAMINATION LIMITED. <br /> IMPACT TO GROUNDNATSR HAS 13 LIMITED AND DOES NOT PRESENT A TMUCAT TO BENEFICIAL QSES <br /> NOW OR IN TB$ FUTQRE_*-(h0 Q' 'O'uaC kik o t?Qc• �` U!'l S d e4-? C'tQ4. T (0 . <br /> iv. Closure tArale, w irrU 'L,A Wb o*' dt f iy( `t A C oyiceAtna-.d-y' . <br /> Does completed corrective action protect existing beneficial uses per the Regional Board <br /> Basin Plan? YES <br /> Does completed corrective action protect potential beneficial uses per the Regional Board <br /> Basin Plan? YES <br /> Does corrective action protect public health for current land use? YES <br /> Site management requirements: NONE <br /> Should corrective action be reviewed if land use changes? NO <br /> Monitoring wells Deccmmisioned: S Number Decommi.sioned:0 3 I Number Retained: 0 <br /> List enforcement actions taken: NONE <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: DONNA Title: DIRECTOR, ENVIRONMENTAL BSALTE DIVISION <br /> Signature: p- _ Date: — <br /> VI. RwQM No ification <br /> Date Submitted to R33: RB Response: C A--(\C_,t j-r e4/ C [ -P_ <br /> RWQCB Staff Name: BRATHOVDS Title:ASSOC ENG GNOL Date: Cfl(Z <br /> vii. Additional Comments, Data, etc. <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 />