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Kennedy/Jenks Consultants One additional shallow monitoring well labeled"Canal Influence"is proposed to be located just northeast of the proposed Well Cluster 2 on the Safeway property. This groundwater monitoring well will target the same depth interval as the shallow well in Cluster 2 (i.e., the shallow groundwater zone)for tho purpose of evaluating the potential impact of leakage from the California Aqueduct.A total of five groundwater monitoring wells are proposed for Study Area 1. Access agreements for it stallation and monitoring of wells on the Safeway property have not yet been secured by Musco(Musco 2008). Musco believes that the proposed Well Clusters 1 and 2 and the Canal Influence well farther northeast will provide the data necessary to understand the nature and interaction of groundwater in the alluvial fan system that underlies the Site with groundwater of regional origin. More importantly, it is anticipated that these new and the existing monitoring wells will in time provide the data to support the following: • Hypothesis of a mixing zone in Area 1 between shallow groundwater and deeper groundwater;and • Analysis of sulfate concentrations in onsite Wells MW-12 and MW-7. 8:2.2 Study Area 2 Proposed Soil Boring 4, located approximately 600 feet north of the former 1-MG pond as shown on Figure 19, will loe drilled to the depth of first encountered groundwater. This boring will provide lithologic data approximately half-way between existing Wells MW-4 and MW-8 to supplement the previous findings. This boring will not be completed as a monitoring well, but will be advanced to better characterize the spatial distribution of clays and sands In Study Area 2, as well as to confirm that shallow groundwater is absent in this location. If shallow groundwater is present in this location, the boring will be completed as a groundwater monitoring well.The stratigraphic data collected in this boring will be used to assess the potential for groundwater to flow from the natural drainage Swale to the north or northwest of the Site. No access agreement is heeded. Proposed Well Cluster 3 is to be located just northeast of the 84-MG reservoir, approximately halfway between existing Welts MWA6 and MW-4(Figure 19). The purpose of this well is to assess the depth to grour dwater and groundwater quality in this offsite location,as well as supplement stratigraphic,data collected in Soil Boring 4.Access agreements for installation and monitoring at this location have not yet been secured by Musco(Musco 2008). A total of one soil:-boring and one groundwater monitoring well are proposed for Study Area 2. 8.1 3 Study Area 3 As shown on Figure 19, proposed Well Cluster 5 is to be located near the northernmost reach of the property, approximately 900 feet northwest of existing Well MW-7. The boring will be advanced to first encountered groundwater, which is expected to be in the deep zone. The purpose of this groundwater monitoring well is to assess deep groundwater quality and elevation at the furthest downgradient on-site location.A total of one well is proposed for Study Area 3. No access agreement is needed. Paye,26 Phase f Groundwater Investigation and Work Plan for Phase II Investigation Musco Family Olive Company, Tracy, California a4+9av�,+nYwMrDAlamy i.moh.no,.pomlmov d,�ran..�whenmlM�.cmwswtpnartaac