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Mr. Howard Hold October 6, 2004 Page 3 • A minimum of two CPT borings located approximately 600 to 1,200 feet west of the north and south ponds to depths of up to approximately 160 to 180 feet; • One CPT boring located approximately 500 feet south of south pond (south of Littlejohns Creek)to a depth of up to approximately 150 to 180 feet(will assess extent in both shallow and deep zones); • One CPT boring located approximately 400 feet southwest of MW4B to a depth of up to approximately 160 to 180 feet; Deep CPT Locations • One CPT boring located approximately 100 to 300 feet northwest of the north pond to a depth of up to approximately 200 feet; • One CPT boring located approximately 500 feet west of south pond to a depth of up to approximately 220 feet; The proposed CPT locations for the shallow and deep zones are shown on Figures 1 and 2. Sample Collection Ground-water samples from each CPT boring will be collected for both field analysis of electrical conductivity and laboratory submittal. The laboratory samples will be analyzed for WQPS constituents (chloride and TDS) as noted in the Kruger Foods—SMS Briners tentative revised Monitoring and Reporting Program(July 15, 2004). Sample Handling and Ground-Water Chemical Analyses As is routinely performed for the ongoing monitoring program, a state-certified laboratory will perform the analyses and the usual chain of custody procedures for sample handling will be followed. All samples will be placed in ice chests and kept at 4 degrees Celsius until analyzed. Samples will be delivered to the laboratory the same day they are collected. Evaluation Monitoring Report Per the schedule specified in the July 15, 2004 tentative revised WDRs, an updated report characterizing the impact to ground-water quality in the shallow and deep zones in the vicinity of the ponds will be submitted to the RWQCB. This report will include the locations of the CPT borings as well as the depths at which water quality samples were collected. The results of water quality sampling along with updated isocontours of the areal and vertical extent of elevated chloride and total dissolved solids in ground water will be presented. The semi-annual ground- water sampling event will be coordinated in conjunction with the collection of samples from the CPT borings to provide ground-water quality data at a similar time period for purposes of the updated analysis of site conditions.