Laserfiche WebLink
r".. ;. ease �iosure summary rage z <br /> Leakinv,IInderground Fuel Storage Task Program <br /> III. Release and Site Chara( `'ri.zation Information (continuer <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 /> TPH (Gas) 0.350 0.350 .620 <.05 Xylene Il <.06 <.06 0.094 <.0005 <br /> TPH (Diesel) - - - - Ethylbenzene i <.06 <.06 0.021 <.0005 <br /> Benzene 0.083 0.083 0.140 <.0005 Oil & Grease i - - - - <br /> Toluene <.008 <.008 0.140 <.0005 Heavy metals - <br /> Other - - - - Other - <br /> Comments (Depth of Remediation, etc.) : <br /> ; <br />` HIGHEST DTW FROM MW1, 4/6/89. LOWEST DTW FROM MW1 10/13/93. SOIL BEFORE FROM BH2 a 20' . <br /> SOIL INVESTIGATION INDICATED THAT THE SOIL CONTAMINATION EVIDENCED IS LIMITED. <br /> WS <br /> ROUNDWATER BEFORE FROM MW1 ON 10/13/93. GROUNDWATER AFTER FROM MW1 ON 10/31/95. <br /> �3 <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 corrective action protect public health for current land else? (Yes) No <br /> Site management requirements: NONE <br /> Should corrective action be reviewed if land use changes?,j Yes (No) <br /> Monitoring wells Decommissioned: (Yes) No Number Decommissioned: 5 Number Retained: 0 <br /> List enforcement actions taken: <br /> NOTICE OF REIMBURSEMENTS SENT 5/19/95 TO CHEVRON AND 10/15/92 TO ULYCESS WILLIAMS. <br /> it <br /> i' <br /> List enforcement actions rescinded: NONE <br /> k <br /> V. Local Agency Representative Data <br /> Name: DOINA HE Title:DIRECTOR OF,, ENVIRONMENTAL HEALTH <br /> Signature: Date:, <br /> VI. RWQCB Notification <br /> Date Submitted to RB: 1/23/96 RB Response: <br /> RWQCB Staff Name: G BOGGS Title:PROGRAM COORD. Date: <br /> VII. Additional Comments, Data, etc. j <br /> E.K. SIMONIS, REGISTERED GEOLOGIST #4422 ESTIMATED APPROXIMATELY 1300 YD30F CONTAMINATED <br /> SOIL REMAINS BETWEEN 15-50' BELOW GRADE AT AN AVERAGE CONCENTRATION OF 0.29 PPM TPH-GAS. <br /> PHIS MASS OF HYDROCARBONS EQUALS TO APPROXIMATELY 0.2 GALLONS OF GASOLINE. DUE TO THE <br /> LIMITED MASS OF HYDROCARBONS IT WAS ANTICIPATED THAT SORPTION AND BIODEGRADATION WOULD <br /> PREVENT PRESENT AND FUTURE IMPACT TO GROUNDWATER. <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 />