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STATE OF COLORADO
<br />DIVISION Of= MINERALS AND GEOLOGY c!
<br />Department of Natural Resources
<br />1313 Sherman St., Room 215
<br />Denver, Colorado 80203
<br />Phone: (303) 866-3567
<br />FAX: (303) 832-8106
<br />April 22, 2005
<br />Mr. Edward M. Gardner /
<br />Whitewater Building Materials Corporation `'
<br />P. 0. Box 1769
<br />Grand Junction, Colorado 81502 /
<br />~/
<br />RE: Whitewater Pit 500, Permit No. M-1977-129, Technical Revision No
<br />Dear Mr. Gardner:
<br />Russell George
<br />Executive Director
<br />Ronald W. Cottony
<br />- Division DirecTar
<br />Natural Resource Trustee
<br />3 Adequacy Review ~~
<br />DMG completed the preliminary adequacy review of your• applioatiorlPforeTechnical Revision No. 31TR-03) to. L: .' :• ~:,::'
<br />. Permit No. NI-,1,977-129 for the Whitewater Pit 500.. The application,;aildressirig-weed management plans, . ,
<br />carinot,be approded.until the following issues are adequately.addressed>-~,Pteasa submit a response zo trie . •'s. r.~ .' , ,
<br />following issues as soon'as possible, but no later than Ap~il'26; 2005.so'the decision due date set for Aprih 27, . .'
<br />' 2005' can be met If: your response, or a decision date extension `request,.are not. received by April. 26,.2005
<br />this application may be denied. -
<br />ADEQUACY ISSUES
<br />1. Please revise the Russian knapweed management plan io include a treatment during the bud to bloom
<br />..stage to preventseed set and minimize noxious weed seed production from.the site.
<br />AMG will review both reactive:and:proactive.measures takeri:tornanagenoxiousweeds whenrevafuating;a-site • .....
<br />for:compliancea+.Therefore; it~is strongly recommended that the:weed•rilahagement-plan-also include: =.,~~i: -: • ~: --~
<br />preventative•measuresto be implemented to minimize new: noxious weed=infestations. Examples include use~of -•~: ~~
<br />pipe to convey water in place of open ditches, maintaining positive drainage on affected surfaces to prevent
<br />standing or slowly draining water, minimize the amount of disturbed acreage by stripping-.land just prior to. •
<br />,., excavation and~conducting:reclamationras soon as feasible•afteran°areaismined.out,cmanage~wash:plant. , r:. .:;r .:~.
<br />-- settling ponds to minimize exposed moist soils during and:immediately:after-:timesrof tamariskseed productien. _~: i r-s :.
<br />Docuinentatiomof-weed management efforts is.critical to.ilemonstrate thaTall~reasonable measur."es are:' : • s .' : ~: ^'<< '
<br />implemented for noxious and problematic weeds. Therefore, DMG strongly,recommends¢hat~alb:weed: .
<br />., management events be thoroughly documented and included•in-tfie"annual-report. -Documentation^should.: ~=c. r..=
<br />,,, „include mapping of grandfathered reclamation; location and extent of weed patches, identification otapecies,-- _ •. .-
<br />specification of management method used; timing of the treatment, and any specifics such as herbicide type;.
<br />mixture strength, application equipment, temperature, weather, etc. The report should also include observed .
<br />results of the effectiveness of the treatment and propose changes when treatments are proven ineffective.
<br />If you need additional information, please contact me at the Division of Minerals and Geology, Grand Junction
<br />Field Office, 101 South Third Street, Room 301, Grand Junction, Colorado 81501, telephone no. 970-243-
<br />6368.
<br />Sincer ,
<br />Steve S. Shuey
<br />Environmental Protection Specialist
<br />OLORADO
<br />IV[5{ON QE
<br />lIN &RALS
<br />EOLOGY
<br />C LANATION•NINING
<br />SAFETY•ECIENCE
<br />Bill Owens
<br />Governor
<br />Office of Office of Colorado
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