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Carollo Engineers November 21,2006(Project No. 3045.036) 1.0 GENERAL SITE INFORMATION On behalf of Carollo Engineers, Fugro West, Inc., (Fugro) has prepared this Groundwater Sampling and Analysis Plan to describe the procedures to drill, sample, and construct three monitoring wells. The Central Valley Regional Water Quality Control Board (CVRWQCB) has required the construction of these wells to monitor a potential impact to the shallow groundwater. Carollo Engineers has prepared plans and specifications for the construction of four Class II surface impoundments that the California Department of Correction and Rehabilitation will operate to the south of the Deuel Vocational Institution (DVI). Fugro completed the first step in receiving concurrence from the CVRWQCB to install monitoring wells with the submittal of the Monitoring Well Installation Workplan dated July 2006. The CVRWQCB approved the workplan in their letter to the California Department of Correction and Rehabilitation dated July 27, 2006. After the review and approval of the CVRWQCB, Fugro will prepare the Monitoring Well Installation Report that will describe the construction of the wells and the results of the first sampling and analyses of the groundwater. This plan is intended to satisfy the requirements of Attachment C, Section 2 - Groundwater Sampling and Analysis Plan in the Monitoring Well Workplan and Monitoring Well Installation Report Requirements in Order No. R5-2006-0075, Waste Discharge Requirements (WDRs)/Monitoring and Reporting Program, adopted on June 23, 2006, by the California Regional Water Quality Control Board, Central Valley Region (CVRWQCB). 1.1 SITE LOCATION AND MONITORING WELL LOCATIONS Plate 1 shows that the approximate locations of four Class II surface impoundments, to the south of DVI that is located along Kasson Road. Fugro has indicated the preliminary locations of the three wells on Plate 2. These locations are outside the bermed areas of the Class II surface impoundments and at least 10 feet beyond the edge of the toe of the slope. The assigned locations are preliminary at this time and Fugro may choose to alter the locations on the basis of contractor's proposed activities, the presence of utilities, or other considerations. 1.2 MONITORING WELL CONSTRUCTION DETAILS The surface elevations in area of the three wells range from approximately 15 to 20 feet mean sea level (MSL) according to the contours shown on the topographic map in Plate 1. The well driller will use 8-inch-diameter augers to advance the borings. The depth of the wells is only 15 feet and the wells will consist of 2-inch-diameter Schedule 40, flush treaded, PVC well casing. For these shallow wells, Fugro does not believe that centralizers are needed. The design details of the monitoring well construction are shown on Plate 3 - Well Construction Details. The bottom 7 feet of each well will consist of slotted well screen. The upper portion will consist of blank casing. The wellheads will be set below grade in traffic-rated steel well covers. G UOWOOSU"t 50"[NP O SWK-31NOVC6.COL 1