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<br />• <br />Cotter Corporation PROCEDURE Number: 3-4 <br />Schwartzwalder Mine Page: 3 of 5 <br />Golden, Colorado WATER MONITORING Revision: 6 <br />Date: 01/10/2008 <br />1) After initial cleaning, assemble filter plate with clean filter. Attach pump discharge to filter inlet and <br />discharge line to filter outlet. Place pump intake line in sample to be filtered and begin pumping, taking <br />care to avoid sucking off the container bottom. <br />2) Set pump rate at level that will not overload filter capabilities and flush the filter apparatus by filtering <br />approximately 200 mL to waste. <br />3) Place filter discharge in clean graduated cylinder and filter desired sample volume. Note: Samples <br />requiring Ra 226 analysis must contain a minimum of 3 liters final volume (filtrate). <br />4) Remove filter(s) and thoroughly flush filtration apparatus with deionized water. Retain filter(s) if <br />suspended analysis is desired and record the total volume filtered. <br />2.5 Laboratory, Analysis <br />Ground water constituent analysis is rotated each sampling event among sample locations. Current <br />analyses are listed in the "Schwartzwalder Sampling Program" document dated June 22nd 2007. <br />Please Refer to Document attached to this procedure. <br />3.0 SURFACE WATER SAMPLING <br />All surface water locations are sampled on a monthly basis. <br />3.2 Location <br />Surface water samples shall be collected from Ralston Creek at the following points: <br />1 Upstream of the mined waste dumps AWD <br />2 Above discharge point, downstream of the mined waste dumps A001 <br />3 At the wastewater treatment plant discharge point when discharging) D001 <br />4 Downstream below the south property line BPL <br />5 At the Lon Lake head ate LLHG <br />3.3 Sampling Procedure <br />Each surface stream water sample is collected using a nalgene-brand pail, or equivalent. Before collecting <br />each sample, the pail and sample container are rinsed out three times with the stream water at the <br />sampling location. The pail need not be cleaned prior to each separate stream location on any given day, <br />when the samples are collected from upstream to downstream. Samples are collected by dipping the pail <br />into the stream and transferring this aliquot into a 4 liter sample container. <br />3.4 Sample Filtration <br />Samples are filtered and preserved according to Section 2.4, 2.4.2 "On-site Laboratory Filtration." Sample <br />filtration and preservation must take place as soon after collection as is possible. <br />3.5 Laboratory / Analysis <br />All samples are to be analyzed for both the dissolved and suspended phase of natural uranium and <br />radium 226 at the Cotter Canon City Mill laboratory or State accepted out-of-house laboratory. <br />Samples are assigned a number which corresponds to a sample submittal form (Exhibit 2-5A). The form <br />is used to document the date and time of sample collection, sampler, and the requested analysis. <br />Analytical results are reviewed by the RSO, forwarded for computer entry, and then filed in the <br />Environmental Department files. <br />If using an out-of-house laboratory, use the Chain of Custody (COCs) forms provided by the third-party <br />lab. <br />5.0 <br />See RHS Procedure 1-7 "Quality Assurance/Quality Control Plan." <br />Submitted by: Radiation Safety Officer Amy L. Thurlkill <br />Approved by: