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CM0001679 <br />Page 8 s <br />3.0 RESERVOIR BOTTOM MATERIAL INVESTIGATION SAP <br />The reservoir bottom material investigation SAP defines objectives and tasks for achieving a <br />representative sampling event based on sound statistical principles and provides guidance for all <br />field work by defining the sampling and data gathering methods to be used. <br />3.1 Reservoir Bottom Material Investigation Task Objective <br />The reservoir bottom material investigation consists of sampling material from the bottom of <br />Eagle Park Reservoir to demonstrate tailings removal. The investigation will also evaluate the <br />impact on the soils (if any) by the previously overlying tailings. <br />3.2 Sample Locations and Frequency <br />Figure 1 presents a sampling grid which was developed to provide representative sampling of the <br />materials on the reservoir bottom. A similar grid will be made on the reservoir bottom prior to <br />sampling. Thirty samples of the bottom material will be collected, one sample from within each <br />grid area. The grids are an average of two acres in area and cover the entire reservoir. Sample • <br />locations will be marked for surveying and photographs will be taken of the reservoir and each <br />sampling location. Locations will be identified with cards indicating sample designations. <br />Sample designations and locations will also be indicated on a map during the sampling event. <br />Sampling of the reservoir bottom will occur once in October or November 1996 after completion <br />of tailings removal from the reservoir. The 30 samples will be collected and half the samples <br />will be sent to the laboratory for analysis along with QA/QC samples, as shown in Table 1. The <br />15 samples to be sent to the laboratory for analysis will be determined using a checker board <br />pattern where a sample from every other grid area will be analyzed. The remaining samples will <br />be archived and no further analysis will be required. If results indicate detection above <br />acceptable limits for the analytes sampled, then additional definition is required and part or all of <br />the remaining 15 samples will be analyzed. <br />3.3 Sample Designation <br />Eagle Park Reservoir bottom material samples will be designated as follows: Sample ST01 will <br />be collected from the northwestern-most grid area and numbering will proceed from ST01 <br />through ST30, from north to south completing each row, then proceeding by rows from west to <br />east. <br />C02075 <br />PRIVILEGED AND CONFIDENTIAL <br />- - - <br />cvROM-Crs%iaxmivu 176107, ooq&znrvb) - Environmental <br />..