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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br />CENTRAL VALLEY REGION <br />MONITORING AND REPORTING PROGRAM NO. <br />WESTERN FARM SERVICE, VERNALIS <br />SAN JOAQUIN COUNTY <br />This fertilizer facility handles bulk fertilizers and packaged pesticides. A preliminary groundwater <br />investigation has found nitrate, ammonia, fumigants, and pesticides in the shallow groundwater at <br />concentrations exceeding water quality objectives. <br />This monitoring and reporting program is issued pursuant to Water Code Section 13267. Prior to <br />construction of any new groundwater monitoring wells or extraction wells, the Discharger shall submit <br />plans and specifications to the Board for review and approval. Once installed, all new wells shall be <br />added to the monitoring program, and shall be sampled and analyzed according to the schedule below. <br />GROUNDWATER MONITORING <br />There are currently three monitoring wells at the site, as shown in Attachment 1. The groundwater <br />monitoring program for wells MW -1 through MW -3, and any wells installed subsequent to adoption of <br />this Order, is listed below. Sample collection and analysis shall follow standard EPA protocol. A bailer <br />must be used to collect the water for all volatile and fumigant analyses. <br />Constituents <br />Depth to Groundwater <br />Volatile Organic Compounds <br />Fumigants (EDB and DBCP) <br />Carbamate pesticides <br />Organophosphorus pesticides <br />Nitrate -N <br />Ammonia -N <br />Sampling <br />Frequency <br />Quarterly <br />Quarterly <br />Quarterly <br />Quarterly <br />Quarterly <br />Quarterly <br />Quarterly <br />Any well(s) installed subsequent to issuance of this Order shall be added to the monitoring program. <br />The first quarter that the well(s) is sampled, the groundwater shall be analyzed for the above <br />—� constituents and the following additional scans: organochlorines (EPA 8080), chlorinated herbicides <br />(EPA 8150), and triazines (EPA 619). If any chemical in any of these scans is detected, then that scan <br />shall be added to the monitoring program for all wells. <br />Our mission is to preserve and enhance the quality of California's water resources, and <br />I� ensure their proper allocation and efficient use for the benefit of present and future generations. <br />Recycled Paper <br />Test <br />Units <br />Method <br />Feet <br />-- <br />µg/1 <br />EPA 8010 <br />µg/1 <br />EPA 504 <br />µg/1 <br />EPA 632 <br />µg/1 <br />EPA 8140 <br />mg/l <br />EPA 300.0 <br />mg/1 <br />EPA 350.3 <br />Sampling <br />Frequency <br />Quarterly <br />Quarterly <br />Quarterly <br />Quarterly <br />Quarterly <br />Quarterly <br />Quarterly <br />Any well(s) installed subsequent to issuance of this Order shall be added to the monitoring program. <br />The first quarter that the well(s) is sampled, the groundwater shall be analyzed for the above <br />—� constituents and the following additional scans: organochlorines (EPA 8080), chlorinated herbicides <br />(EPA 8150), and triazines (EPA 619). If any chemical in any of these scans is detected, then that scan <br />shall be added to the monitoring program for all wells. <br />Our mission is to preserve and enhance the quality of California's water resources, and <br />I� ensure their proper allocation and efficient use for the benefit of present and future generations. <br />Recycled Paper <br />