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k14 KLEINFELDER 5 GROUNDWATER SAMPLING AND ANALYSIS PLAN Beginning in the third quarter 2006, groundwater monitoring in the vicinity of the wastewater ponds will be conducted on a quarterly basis and will include the collection and analysis of groundwater samples from the three proposed monitoring wells and the reporting of the activities and results to Lodi Vintners for review and submittal to the CVRWQCB. This plan addresses the groundwater sampling and analysis portion of the groundwater monitoring requirements included in the Revised MRP No. 93-112. 5.1 FIELD ACTIVITIES Water level measurements will be taken in each of the monitoring wells prior to each sampling event as described in Appendix A-4.1. The monitoring wells will be allowed to equilibrate at least 1/2 hour prior to measuring water levels. Each of the three monitoring wells will be purged of three to five well volumes and sampled using a disposable bailer and as generally described in Appendix A-4.2. Purge water generated during sampling of the wells will not be contained but will be discharged to the ground surface on site. After collection, the three groundwater samples will be labeled, logged on a chain-of- custody form, and immediately stored in an iced cooler. The samples will be transported under chain-of-custody control to Kleinfelder's office and then transported by a courier to a laboratory certified by the State of California for the requested chemical analyses. 5.2 LABORATORY ANALYSIS The three (3) groundwater samples collected from the monitoring wells each quarter will be submitted to a State certified laboratory and analyzed for the following: • Nitrates as N by EPA Method 300.0 • Total Kjeldahl Nitrogen by EPA Method 300.0 • Total Dissolved Solids by EPA Method 160.1/SM 2540C • Fixed Dissolved Solids by EPA Method 160.4 • pH by EPA Method 150.1 67451.WP1/ST06R295/FB:Iv Page 8 of 14 ©2006 Kleinfelder, Inc. March 31,2006