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TR04 RECEIVED <br /> JPumac JAN 2 9 2019 <br /> ACME <br /> BRICK DIVISION OF RECLgMgT1� <br /> Acme Brick Company MY04GANpSnc, �+ <br /> 00 3 <br /> January 16, 2019 <br /> o t0 <br /> Mr. Patrick Lennberg L N <br /> Colorado Division of Minerals and Geology <br /> 1313 Sherman St, Rm 215 <br /> Denver, CO 80203 <br /> Re: Dawson Clay Mine. M1977-392, TR - Weed Control Plan <br /> 0 <br /> Dear Patrick Lennberg: 0 p <br /> On November 14, 2018 the Division of Reclamation, Mining& Safety conducted an <br /> inspection Acme requested due to the facility permanently closing in the near future. During the <br /> inspection, State listed noxious weeds (Canada Thistle and Diffuse Knapweed) were found on <br /> site. Acme is submitting a Technical Revision for implementing a Weed Control Plan as a result <br /> of inspection. <br /> On December 20, 2018 I met with William Wilkins, Elbert County Extension Agent,to <br /> get his advice for a weed control plan. <br /> Mr. Williams has suggested a multifaceted weed management plan. <br /> I. Mechanical: mowing early spring, possibly digging up the plants including the roots <br /> (livestock grazing may replace these). <br /> 2. Chemical: Aminopyralid (Milestone), Chlorsulfuron(Telar DF) and Clopyralid + 2, 4-D <br /> (Redeem). <br /> a. Canada Thistle: Milestone 5-7 ounces/acre 1 t./gal. water, Telar DF 1-3 ounces/acre <br /> 0.50 gr/I gal. water, 2, 4-D 3 pints/acre 1.25 oz./gal. water. Spring at the pre-bud <br /> growth stage and/or to fall re-growth. <br /> b. Diffuse Knapweed: Milestone 5-7 ounce/acre I t./gal. water, 2, 4-D 1 qt./acre I <br /> oz/gal. water, Clopyralid 1.5-2 pints/acre 0.75 oz/gal. water. Spring at rosette to early <br /> bolt stage and/or in the fall to rosettes before flowering stalk lengthens. <br /> 3. Cultural: Grazing early spring. Grazing will be contingent on the current grazing lease <br /> holder. <br /> 4. Biological: Biological controls are available through the Palisade Insectary. <br /> a. Canada Thistle: Suggested application for biocontrol release is Sept. —October. <br /> b. Diffuse Knapweed: There are two suggested biocontrols. Using them both would <br /> cover May—August. The first in May and the second in July. <br />