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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD
<br /> CENTRAL VALLEY REGION
<br /> MONITORING AND REPORTING PROGRAM NO. R5-2004-0160
<br /> FOR
<br /> CONTIGROUP COMPANIES, INCORPORATED
<br /> FRENCH CAMP GRAIN ELEVATOR
<br /> ENHANCED REMEDIATION PILOT STUDY
<br /> SAN 7OAQUIN COUNTY
<br /> This Monitoring and Reporting Program(MRP)incorporates requirements for monitoring the progress
<br /> of the enhanced remediation pilot study. This MRP is issued pursuant to California Water Code Section
<br /> 13267. ContiGroup Companies,Inc. (Discharger)is required to comply with this MRP. The Discharger
<br /> shall not implement any changes to this MRP unless and until a revised MRP is issued by the Executive
<br /> Officer. Groundwater sampling and reporting outlined in MRP No. 5-00-858 is still required.
<br /> All samples shall be representative of the volume and the nature of the discharge and matrix of the
<br /> sampled medium. The time, date, and location of each grab sample shall be recorded on the sample
<br /> chain of custody form.
<br /> ENHANCED REMEDIATION PILOT STUDY MONITORING
<br /> As shown on Attachment B,there are 14 monitoring wells,two proposed monitoring wells, and two
<br /> private supply wells. The private wells are no longer in use. Monitoring of the enhanced remediation pilot
<br /> study will consist of groundwater samples collected from four monitoring wells: MW-3B,MW-4B, and
<br /> newly installed monitoring wells (MW-9B and MW-10B). Monitoring shall follow the schedule below.
<br /> These analyses shall be completed by a State certified laboratory and shall follow standard EPA protocol.
<br /> Constituents EPA Method Maximum Quantitation Limit Sampling Frequency
<br /> Volatile Or anic Co ounds 8260 1 0.5 u Schedule A
<br /> Alkalini 310.1 310.2 1 1.0 m l Schedule A
<br /> Carbon dioxide(dissolved) SM4500 or ASTM D1945 0.01 mg/l Schedule A
<br /> Chloride 300 0.2 mg/1 Schedule A
<br /> Nitrate as N 300 352.1 0.4 m Schedule A
<br /> Sulfate 300,375 n5. Schedule A
<br /> Total Dissolved Solids 160.1 10 mRA Schedule A
<br /> Total Or anic Carbon 415 0.3 m Schedule A
<br /> Iron,total&dissolved 200.7 0.1 m Schedule A
<br /> Ferrous and Ferric Iron 200,6020,or SM 3000 0.1 mg/1 Schedule A
<br /> Ethylene glycol 1666, 1671 200 mg1lSchedule B
<br /> Boron 200.7 or 6010B 0.1 Schedule B
<br /> Phos horous 200.7 365 1.0 1 Schedule B
<br /> Methane SM4500 or ASTM D1945 0.01 m Schedule B
<br /> Metals 200.7 200.8 Various Schedule B
<br /> 1 For nondetectable results
<br /> 2 Metals analysis includes:barium,cadmium,calcium,total chromium,copper,lead,magnesium,manganese,
<br /> mercury,molybdenum,nickel,silica,and sodium
<br /> ug/1 Micrograms per liter
<br /> 1119/1 Milligrams per liter
<br /> Schedule A Baseline,2,4,8, 12, 16,20,and 24 weeks after GZVI injections are completed,and quarterly thereafter.
<br /> Schedule B Baseline,2,4,and 8 weeks after GZVI injections are completed. Any metal,boron,phosphorous,methane or
<br /> ethylene glycol detected in MW-3B,MW-4B,MW-9B,or MW-10B at 10 percent above baseline concentrations
<br /> shall also be monitored at 12, 16,20,24 weeks,and quarterly thereafter in the well in which it was detected.
<br /> Note: Baseline samples are collected from monitoring wells MW-3B and MW-4B a minimum of four weeks prior to the
<br /> injection of GZVI.
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