SITE INFORMATION AND CORRESPONDENCE (2)

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Evaluation of Potable Water Sources Page 2 Ranch Market Site,23569 S Santa Fe Road,Riverbank CA August 18 2000 SECOR discussed the possibility of extending the city water service over the Stanislaus River to the Pantoja property with Mr. Randal Dodd with the City of Riverbank Public Works Department and Mr. Steve Black with the City of Riverbank Water Treatment Plant. Although the City Riverbank would like to establish water service to Meyer Park and City of Riverbank Sewage Treatment Plant, Mr. Dodd indicated that budget constraints would not allow the Public Works Department from sharing the cost of the water extension. Significant time would be required to design the water line and obtain the required permits from the Stanislaus and San Joaquin Counties, both of which have jurisdiction over the southern and northern portions of the bridge respectively. SECOR does not recommend this approach do to the significant amount of time required to design and permit the waterline extension with multiple regulating agencies. Option 2 City of Riverbank Community Water Supply Well Another option for a source of potable drinking water at the Pantoja property is to work with the City of Riverbank to install a community water supply well that could supply water to the Pantoja property, three adjacent residences, Meyers Park, the Sewage Treatment Plant, and the future development of the property at 23701 S. Santa Fe Road (APN 249-060-012). After installation of the well and lateral lines to the properties listed in Option 1, the City of Riverbank could operate the well, complete the required Community Water Supply Reports, and bill the end users a monthly fee. This option would also allow the supply well to be located outside of the known limits of the dissolved petroleum hydrocarbon plume. As discussed above, this option would require cost sharing and coordination with the City of Riverbank and the well would need to be drilled to depths ranging from 200 to 600 feet below grade surface due to nitrates found in the shallow groundwater. This offers a long-term water supply solution for the four residences located within or adjacent to the dissolved petroleum hydrocarbon plume. Unfortunately, the time needed to coordinate, permit, and implement the plan with the City of Riverbank and working out a cost sharing arrangement for the added costs associated with a well large enough to feed all parties will not meet the immediate water needs of the Pantoja property. Option 3 The third option for potable water is to install a well on the Pantoja property. Per the San Joaquin County Environmental Health Division letter dated April 26, 2000, the well must have a minimum seal of 200 feet. Due to the presence of nitrates in the shallow groundwater the well may need to be drill to a depth of 600 feet bgs. The depth needed to obtain potable water would be determined by analyses of water samples collected from a test boring drilled on the Pantoja property. Installation of a single deep water supply well offers the most timely and practical solution of the Pantoja properties potable water needs. The subcontracted costs associated with completing Option 3 are discussed below. File:Ranch Marke0POlWaterSource.ltndoc