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sss~ c~~l <br />October 19, 2005 <br />F/a+e ~la~~~es'If~v+C. <br />Mr. Steve Shuey <br />Environmental Protection Specialist <br />Division of Minerals and Geology ~/ <br />101 South 3'd Street, Suite 301 <br />Grand Junction, Colorado 81501 <br />i~~5 / <br />F~, <br />~~ ~ ~~~~ <br />~~~°~r <br />sd <br />°~. <br />OCTp~~,~ <br /> <br />RE: North Delta Pit P re mit No. M-1979-002, Technical Revision for Weed Control ~/ <br />Plan <br />Deaz Mr. Shuey, <br />Lafazge West, Inc. (Lafazge) is requesting a Technical Revision to our existing North <br />Delta Pit Permit to include a Weed Control Plan, as you requested in an August 9, 2005 <br />site inspection. <br />The complete Weed Control Plan is enclosed and includes the following measures: <br />-Weed populations will be monitored and identified for control. An annual Weed <br />Control Plan will be developed accordingly, and follow-up evaluations will be <br />completed to evaluate control success. <br />-Herbicide application will mainly be used on perennial forb species such as <br />Canada Thistle, Field Bindweed, White Top, and Perennial Peppergrass. <br />Tamarisk will be controlled with Arsenal and Habitat and will be sprayed prior to <br />the end of September. Russian Olive will be cut down and the stump will be <br />treated with Garlon or a similar herbicide. If mature stands of Russian Olive aze <br />present, a foliar application of Arsenal will be used. <br />-Mowing of weeds that have just begun to flower will be conducted utilizing a <br />rotary brush hog mower. <br />-Temporary seeding of topsoil stockpiles will be used to create a stable vegetation <br />cover composed of native perennial species, which will help reduce the growth of <br />weedy species. Topsoil stockpiles will be mowed as is practicable to further <br />control weed species. A cover crop will be used on any stockpiles or sites that will <br />be redisturbed within six months. <br />-Rapid turnover of product stockpiles will be the most practical control for annual <br />weeds that may grow on them, as their configuration prevents mowing. <br />