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7/12/2021 State.co.us Executive Branch Mail-Re:Southfield Mine SL-05 Inspection Report <br /> O STATE F <br /> • STATE DO DRMS_CoalAdmin -DNR, DNR<dnr-drms—coal—admin@state.co.us> <br /> COLO <br /> Re: Southfield Mine SL-05 Inspection Report <br /> 1 message <br /> Trujillo - DNR, Zach <zach.trujillo@state.co.us> Mon, Jul 12, 2021 at 12:56 PM <br /> To: Doug <ajjc@att.net> <br /> Cc: Jason Musick- DNR<jason.musick@state.co.us>, DNR DRMS_CoalAdmin - DNR<dnr-drms—coal—admin@state.co.us> <br /> Dr. Corley, <br /> Per Rule 4.05, a permanent diversion is to be designed for a 100-year event. <br /> Sincerely, <br /> On Mon, Jul 12, 2021 at 12:48 PM Doug <ajjc@att.net>wrote: <br /> Zach, <br /> remember that it was recorded in Florence now. There was far less rain on that day recorded a mile east of <br /> Southfield at a rain gauge on CR15, and neither of the two recordings were anywhere close to a 100 year event. Isn't <br /> the 100 year event the amount that the diversion needs to be designed for? <br /> Doug Corley <br /> On Jul 12, 2021, at 12:38 PM, Trujillo- DNR, Zach <zach.trujillo@state.co.us>wrote: <br /> Dr. Corley, <br /> Your additional comments have been received and I will ensure they are incorporated into the public <br /> record. Please see the attached 2018 inspection report. <br /> Sincerely, <br /> On Mon, Jul 12, 2021 at 11:42 AM Doug <ajjc@att.net>wrote: <br /> Zach, <br /> Who made and where was the 2018 rain event recorded. That information is probably in your previous <br /> report, but I have so much trouble accessing the old reports that I will ask. <br /> don't see any mention of my statement at the inspection that there has been no significant flow in the <br /> Diversion since the small area of rip-rap was removed, nor any mention that the Diversion construction <br /> has never been certified by a licensed engineer or that the inlet opening of the culvert has been <br /> damaged with reduction of the cross section area, reducing its flow capacity. <br /> Doug Corley <br /> On Jul 12, 2021, at 11:07 AM, Trujillo- DNR, Zach <zach.trujillo@state.co.us>wrote: <br /> Dr. Corley, <br /> Please see the attached inspection report from the Division regarding the Southfield Mine <br /> (C-1981-014) SL-05. <br /> Sincerely, <br /> COLORADO <br /> c�o <br /> Division of Reclamation, <br /> Mining and Safety <br /> Department of Natural Resources <br /> https://mail.google.com/mail/b/ALGkd0y8elLUpphO-cw_b4dRu9Vtn4AuagQgJnHQChhDjud92irb/u/O?ik=deb7fOcd20&view=pt&search=all&permthid=th... 1/2 <br />