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iii iiiiiiiiiiiu iii . <br /> <br />~.• <br />M E M O R A N D U M ~ <br />T0: <br />CC: <br />FROM: <br />DATE: <br />SUBJECT: <br />BMG - San Luis <br />Andre Douchane - BMG <br />Dick Eaman - BEI <br />Grant Shelton - BEI <br />T.C. Shutt <br />April 14, 1992 <br />CHEMICAL ANALYTICAL MATRIX <br />Gbiectives: <br />1. Reduce Free-CN as quickly as possible <br />2. Confirm (1) by analysis <br />3. Determine accuracy of analytical data <br />Testing System <br />t. BMG - San Luis Analyses <br />Colorado state requires daily data until <br />results. The report sheet, attached as <br />those tests required. <br />e <br />~ ~~ ~~ <br />.~~ <br />~~°~~ ~„ <br />1~" 5(' <br /> <br />further notice on one set of analytical <br />"Daily Log of Analytical Results," are <br />The full matrix should be completed only for samples taken on Monday and <br />Wednesday (more about this later in the memo). All samples taken on the other <br />working days should be analyzed only for (CN)-. ~J <br />2. Third-Party Analyses ~z~r~ <br />(a) For the foreseeable future we shall use 2, third-party labs as back-up to <br />your data. At the time of writing we have accepted Acculab and Analytica, <br />and eliminated Hazen, Hauser, Skyline and Barringer. <br />(b) We shall "check-test" the accuracy of BMG and third-party labs by having <br />all of you analyze a previously certified "unknown" sample. Said sample <br />to be prepared by a lab known only to BEI. You will be notified as to <br />which is the "unknown." <br />(c) Those samples that are to be analyzed by BMG and third-parties shall be <br />obtained on Monday and Wednesday each week, as follows: <br />Take a 5 gallon (full) sample from 3 sites as follows: <br />(a) Pre-Detox <br />(b) Spicket <br />(c) Tailings Pond <br />r ~~ <br />c,~ <br />