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iii hp�' <br /> OLIRAY SJU M AMINES <br /> diluted chemical could be toxic. Commit to conduct sampling of tailings for <br /> residual reagent chemicals once the mill is operational and provide the Division <br /> with the results. Any adjustments to chemicals used or ratios will require new <br /> testing pursuant to Rule 6.4.21(5)(b) and 6.4.21(6)(c). <br /> Response: As part of mill commissioning the mine will commit to sampling the tailings, <br /> which, will include residual reagent chemicals as part of the initial parameter list. As <br /> chemical ratios are adjusted to refine the milling process new testing pursuant to Rule <br /> 6.4.21(5)(b) and 6.4.21(6)(c) will be conducted and results will be sent to the division. <br /> It is important to note that mill chemicals by design are attractors to sulfides and are <br /> retained in the concentrate not with the tailings. Even if mill chemicals were to make it <br /> into the tailings, the total amount of mill chemical in the tailings is calculated to be less <br /> than two pounds over the course of 100 years. The mine can provide the calculations to <br /> the division upon request. <br /> The mine has already committed to sampling the tailing as part of TR-09 and will be <br /> pulling SPLP testing on a regular basis. That information will be made available to <br /> DRMS. <br /> 8. In response to the answers to questions 10 and 11 of adequacy review 1. What <br /> sort of secondary containment structures will be employed to protect against spills <br /> during the loading and unloading process of chemicals? Rule 6.4.21(6) <br /> a. Example: Trucks will deliver chemicals to the site. If a storage container <br /> were to be damaged during loading and unloading it would not be within <br /> the Reagent Room secondary containment. The forklift would be holding <br /> onto a leaking reagent container outside adjacent to the facilities. <br /> b. Example: Eventually the process water will need to be disposed of. How <br /> will the system be drained into trucks for transport off site? The Trucks <br /> cannot drive into either of the facilities and this means the fluid transfers <br /> would be occurring outside of secondary containment. <br /> c. Will any sort of concrete loading apron be installed outside of the reagent <br /> room?Said apron could contain a drain/sump. Detoxification of a solid <br /> surface would be easier as well as avoid the need for removal of <br /> contaminated soil. <br /> Response: <br /> a. The mine commits to building a concrete apron in front of the reagent room so that <br /> reagent chemicals can be unloaded and placed in the building without leaving <br /> secondary containment. The new apron will be like the apron that is currently <br /> 61P �� ? <br />