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r <br />se Closure Summary Page 2- t' <br />Leak �derground Fuel Storage Taak#-by!ram <br />tTT_ 2a2PaRa and Sita Characterization Information (continued) <br />MaxiDocumented Contaminant Concentrations --Before and After Cleanup <br />Does completed corrective action protect potential beneficial uses per the Regional Board <br />Basin Plan? `t?S <br />Conta= nant <br />Soil <br />(ppm) <br />Water (PPB) <br />Contamina-at <br />Soil <br />(ppm) <br />Water <br />(PPB) <br />List enforcement actions rescinded: NONS <br />Before <br />After <br />Before After <br />Before <br />After <br />Before <br />After <br />TBH (Gas) <br />350 <br />350 <br />*12000 <br />*12000 <br />Xylene <br />0.88 <br />0.88 <br />*1200 <br />*1200 <br />T?H (Diesel) <br />---- <br />---- <br />---- <br />---- <br />Bthylbenzene <br />3.2 <br />3.2 <br />* 55.0 <br />*55.0 <br />Benzene <br />1.3 <br />1.3 <br />*470 <br />*470 <br />Oil a Grease <br />---- <br />---- <br />---- <br />-___ <br />Toluene <br />0.78 <br />0.78 <br />*36.0 <br />*36.0 <br />LEAD metals <br />---- <br />---- <br />---- <br />---- <br />2TCBE <br />---- <br /><0.05 <br />---- <br /><10.0 <br />Other <br />Comments (Depth of Remediation, etc.): <br />EXCAVATION REMOVED THE BULK OF THE SOURCE AND THE GROUNDWATER <br />PLUMS HAS ALWAYS <br />BEEN <br />�LEMaTED TO THE FORMER TANK PIT AREA. PASSIVE DEGRADATION SHOWN TO BE THE MOST COST EFFECTS <br />APPROACH. BENEFT-C=AL USES NOW AND IN THE FUTURE ARE PROTECTED. <br />*GRAB SAMPLE RESULTS* <br />I'TT. Closure <br />Does cc - leted 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? `t?S <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 Decommi.sioned: YES Number Decommisioued:0 2 <br />Number Retained :0 0 <br />List enforcement actions taken: =TIAL DI.R?c I4'E La"TT= <br />i <br />List enforcement actions rescinded: NONS <br />V. Local Agency Representative Data <br />Name: DONNA Title: ===OR' ENVIRONM3NTAL HEALTH DIVISION <br />Signature: Date: -3 <br />V=. RWQCB Notification <br />Date Submitted to RB: 07-31-96 I RB Response: CONCURRENCE TRr <br />RWQC3 Staff Name: BRATHOVDETit1e:ASSOC ENG GSDL Date: 08-22-96 <br />VIS. Additional Comments, Data, etc. <br />This document and the related CASE CLOSURE LZ-- =, 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 />