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kq KLEINFELDER screened interval depth, it is Kleinfelder's opinion that the effects of leakage from the canal would not significantly affect the groundwater level in this well and would likely be negligible if it did. However, future groundwater soundings and resulting flow and gradients should be assessed for any suspected anomalies, which may be caused by leakage from the Delta Mendota Canal, Mr. Borges from the PHS/EHD has additionally. requested that the deep wells be monitored'for'general minerals on an annual + 1n addition to the PHS/EHD request, the San Joaquin County Community Development Department of Development Services Division (CDD) has fequested that two shallow wells be installed`to monitor potential perched water and/or seepage between the Delta Mendota Canall and a proposed settling basin. Quarterly monitoring of these two wells and annual reporting has been requested. The following scope of service address these items. i PROPOSED SERVICES I Task E01 - Permitting and Pre-Field Activities i Based on the verbal approval of the client, this scope of work (less the cost estimate and contract) will be submitted to the San Joaquin County Public Health Services Department Environmental Health Division (PHS/EHD) and CDD for approval. Kleinfelder will obtain boning/monitoring. well.permits.from.the PHS/EHD The PHSIEHD must approve the proposed scope of work and the boring permits prior to any exploratory borings greater than 18 inches in depth. Additionally, PHS/EHD will charge DSS an initial 3-hour minimum and any additional oversight charges above the permit fees to be submitted by Kleinfelder. These fees will be billed directly to DSS by the PHSIEHD. Kleinfelder will forward the appropriate "billing and compliance acknowledgement forms" to DSS for signature. Signed originals of the forms and the initial 3- hour oversight fees must be submitted to PHSIEHD as part of the permit process. The drilling subcontractor will be responsible to contact Underground Service Alert 48 hours prior to conducting field work to notify local utilities of our proposed subsurface assessment. Task E02 —Monitoring Well Installation Two (2) monitoring wells will be installed between the Delta Mendota Canal and the settling basin located in the vicinity of a proposed gravel pit located at the DSS Company Tracy facility, west of Koster Road, between the California Aqueduct and the Delta Mendota Canal (Plate 1), in Tracy, California. Based upon approximate elevations of the Delta Mendota Canal invert reported by DSS, the two shallow monitoring wells will be installed to total depths of approximately-35 feet below ground surface (bgs).kThe purpose of these monitoring wells will be to monitor for a potential perched groundwater zone between the settling pond and the Delta Mendota Canal. 20-YPO-21212000P256/200OW022 Page 2 of 7 ©2000 Kleinfelder, Inc. July 25,2000 {