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Nestl6 USA, Inc., Ripon, California March 26, 2014 <br /> 2013 Annual Report <br /> 6.1 REPORTING ACTIVITIES FOR 2014 <br /> The following reporting activities are proposed: <br /> 1. Submit an addendum to the FS based on the discussion with RWQCB during the <br /> December 2013 meeting and follow-up letter from RWQCB in January 2014; <br /> 2. Submit a draft MNA work plan to RWQCB on or before March 31, 2014. Based on <br /> discussion and resolution of comments from RWQCB, a final plan will be submitted <br /> with the RAP; <br /> 3. Prepare work plan for installation of extraction wells and submit to RWQCB as part of <br /> RAP; <br /> 4. Submit the RAP after RWQCB acceptance of the FS addendum; <br /> 5. Submit monthly sampling results for the Nestl6 treatment system and private treatment <br /> systems; <br /> 6. Submit sampling results for private wells based on sampling frequency; and <br /> 7. Review COC trends in monitoring wells and propose changes to monitoring <br /> frequencies on a case-by-case basis for provisional RWQCB approval. <br /> 6.2 RECOMMENDED FIELD AND OTHER ACTIVITIES <br /> ECM recommends the following: <br /> 1. Continue the high-resolution water-level monitoring program in the lagoon/pond area <br /> and MW-3 area for at least one more year to evaluate how groundwater levels in the <br /> Upper and Intermediate aquifers respond to changes in lagoon/pond recharge and <br /> river stage; <br /> 2. Revise the 2013 capture zone analysis using the existing groundwater model for the <br /> planned M-10A remediation system to determine the locations of injection wells to <br /> support the WDR application to the RWQCB; <br /> 3. Meet with the City of Ripon to discuss City right-of-way access for the planned <br /> remediation system conveyance line; <br /> 4. Submit a WDR permit application to the RWQCB related to planned installation of <br /> injection wells as part of the M-10A area remediation system; <br /> 5. Install extraction wells for remediation M-10A area as part of RAP; <br /> 6. Install injection wells after approval of WDR permit form the RWQCB; <br /> 7. Construct conveyance system, if necessary, to convey extracted water from the new <br /> extraction wells after treatment to injection gallery for reinjection; <br /> 8. Shutdown the IRAP system to coincide with the initiation of the offsite remediation <br /> system, based on the continued decline in the TCE removal rate; <br /> 9. Upgrade the existing treatment system at Industrial Avenue or at the former MW-4 well <br /> location (owned by City of Ripon) <br /> 22 <br />