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3/21/2018 State.co.us Executive Branch Mail-Fwd:Colowyo TR-119 <br /> STATE OF DRMS_CoalAdmin -DNR, DNR<dnr drms_coal_admin@state.co.us> <br /> 'r COL RAIDO <br /> Fwd: Colowyo TR-119 <br /> 1 message <br /> Trujillo- DNR, Zach <zach.trujillo@state.co.us> Mon, Mar 19, 2018 at 10:50 AM <br /> To: DNR DRMS_CoalAdmin - DNR<dnr—drms—coal—admin@state.co.us> <br /> The following email is OSM correspondence regarding Colowyo Mine (C-1981-019)TR-119. <br /> Thanks, <br /> ---------- Forwarded message ---------- <br /> From: Trujillo - DNR, Zach <zach,trujiIlo@state.co.us> <br /> Date: Mon, Mar 19, 2018 at 10:49 AM <br /> Subject: Re: Colowyo TR-119 <br /> To: "Mitchell, Lauren" <lmitchell2@osmre,gov> <br /> Hi Lauren, <br /> Thank you for your response. Since, as you mentioned, the disturbance is considered an incidental boundary change, the <br /> Division does not feel a Formal Letter of Determination is needed for the Colowyo Mine Technical Revision No. 119. <br /> Sincerely, <br /> On Mon, Mar 19, 2018 at 10:37 AM, Mitchell, Lauren <Imitchell2@osmre„gov>wrote: <br /> Hello Zach, <br /> Since the disturbance is around 30 to 40 acres, I consider this highly an incidental boundary change which would fall <br /> under OSMRE's REGs (30 CFR 746.18 (d) (3ii))that states a Mine Plan is not required for an incidental boundary <br /> change. This being a very small acreage modification to the lease as a whole, would be considered a minor <br /> modification and exempt from requiring a Mine Plan. <br /> If however, there have been multiple modifications to this lease since the last mining plan, might make this revision a <br /> mining plan if the sum of all modifications plus this acreage disturbance in question sums up to be a significant amount. <br /> You had not mentioned any major modifications in the past and if that is the case no Mine Plan will be needed. <br /> If there are elements to this revision that I need to know please email me a map and information regarding acreages <br /> and we can go from there. If you feel a Formal Letter of Determination is needed please request one with me by email. <br /> Thankyou <br /> Lauren Mitchell <br /> Environmental Protection Specialist <br /> Office of Surface Mining Western Region <br /> 1999 Broadway,Suite 3320 <br /> Denver,CO 80202 <br /> Office#303-293-5028 <br /> Fax#303-293-5032 <br /> Zach Trujillo <br /> Environmental Protection Specialist <br /> https://mail.google.com/mail/b/AHud47l tBKLBi2lmmf24OFZhCYN-OCXZmOZH5KhggLjj2jJHXW6E/u/O/?ui=2&ik=deb7fOcd20&jsver=N4xlTacRcEg.en.&view=pt&sear <br />