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Phase IVa Pipe Installation. A letter dated November 6, 2002, from Golder <br />Associates Inc. addressing the installation of an 8 inch pipe in Phase IVa near the <br />toe of the existing Phase IVa haul road is enclosed. This installation was <br />previously field approved. <br />Permanent Diversion Channe] Horizontal Alignment Modifications, Rev 1, _ <br />September 24, 2002. This drawing provides the record for the minor alignment <br />change previously approved in the field. <br />Phase IVa solution collection pipe installation. A letter from Golder Associates <br />dated April 12, 2002, addressing Golders' design engineering approval for the <br />removal of solution collection piping installation in certain sections of Phase IVa <br />is enclosed. This modification was field approved by the Division of Minerals <br />and Geology ("DMG") based on discussions with the Golder Associates Resident <br />Engineer. Removal of these sections of pipe is based on the gradient in these <br />areas and the hydraulic conductivity of the drain cover fill. Golder Associates <br />confirm that this change meets design criteria. <br />These items are also discussed as appropriate in the weekly construction reports ~ <br />generated by Golder Associates Inc. and submitted to the Division of Minerals and <br />Geology. <br />Please contact me at (719)-689-4056 should you have questions or wish to discuss these <br />submittals. ~ <br />Sincere~~ <br />~~~- <br />Phil Barnes <br />Manager, Environmental Resources <br />Enclosures <br />