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Folsom South Canal Connection Preliminary Design, Alignment 2 Geotechnical Exploration Work Plan The work plan presented below is for a geotechnical exploration program along portions of the Alignment 2 alternative between the Folsom South Canal and the Mokelumne Aqueduct (Figures 1, and 2, Location Map). The purpose of the work is to establish geotechnical parameters for preliminary design of the Alignment 2 alternative. The work includes data review, reconnaissance geologic mapping along the alignment, and subsurface exploration which will be performed along the alignment at the locations shown on Figures 1 and 2. The location and access to each of the borings are described in Table 1, Boring Locations. We understand that sampling to determine the presence of hazardous materials will be included as part of this program and is to be performed by OCC under the immediate direction of CH2M Hill. 1. Data Review. Olivia Chen Consultants (OCC)will obtain and review existing subsurface geologic/geotechnical data proximate the Alignment 2 alternative between Folsom South Canal and the Mokelumne Aqueduct. Such data may be available from Sacramento County and San Joaquin County Departments of Health Services (DHS) and Public Works (DPW). 2. Obtain Drilling Permit. OCC will obtain drilling permits from the San Joaquin County Department of Health Services prior to drilling. No drilling will be done until the permits are received. 3. Locate Borings and Obtain Utilities Clearance. Prior to physically locating the drill sites, OCC will visit each site with EBMUD and the landowner or landowner's representative. OCC will mark boring locations with labeled lath and flagging and/or white paint, as suitable,upon receipt of clearance from the District's right-of-entry staff. An underground utilities surveyor, e.g. USA, will be engaged to identify the location of utilities at each of the proposed boring locations. 4. Drilling. Drilling comprises the subsurface exploration for this study and will commence within two weeks of notification of receipt of right-of-entry, contingent on weather, suitability of access roads, and availability of drilling equipment. The work will comprise of twenty-four* (24) rotary-wash borings. Seventeen(17) borings will be GAPROJECCTMEBMUD\1113\1113.21\SJC_PRM2.DOC 1 Olivia Chen Consultants, Inc.