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I~ ENVIRONMENTAL <br />e RESOURCE ASSOCIATES <br />ARVADA, COLORADO 1-800372.0122 <br />Battle Mountain Gold Co. <br />Catalog No 502: Cyanide <br />Parameter <br />Total cyanide <br />Cert~ed Value <br />(u41L1 <br />218 <br />Preservation: This sample is preserved with NaOH. <br />Storage: Store at 4t2°C. <br />The Cenifietl Value is equal to 100°,6 0l the parameter in the indicated sample. <br />Lot No 0813-96-02 <br />Performance <br />Acceptance LimitsT"'(ua/L) <br />159 - 277 <br />The Pertormance Acceptance L'unils (PACs"') are listed as guidelines for acceptable analytical results given the limitations of the <br />USEPA methodologies commonly used to determine these parameters and closely approximate the 95°6 confidence interval. The <br />PALsT" are based on data generated by your peer laboratories in ERA's InterLa BT" program using the same samples you are <br />anatyzing and data from USEPA methods, WP, WS and CLP interlabaralory studies. If your result falls outside of the PAL"', <br />ERA recommends that you investigate potential sources of er•or in your preparation and/or analytical procedures. For further <br />technical assistance, call ERA at 1-800372-0122. <br /> <br />3 <br />O <br />N <br />O <br />C <br />3 <br />H <br />y <br />3 <br />d <br />y <br />G. <br />J T.,. <br />t^/I f <br />Y. ~ <br />Prepared by: C~_ cam/ Reviewed by: <br />Date: F~is~96~96 Date: B~~SI`1~a ~. <br /> <br />