2012-02-13_REVISION - M2005050

• Permit No: M2005050
• IBM Index Class Name: REVISION
• Doc Date: 2/13/2012
• Doc Name: Response to Division's review letter dated September 26, 2011 and the December 6, 2011.
• From: Rimrock Exploration
• To: DRMS
• Type & Sequence: TR2
• Email Name: GRM
• Media Type: D
• Archive: No

RE: Latest Email on Spillway Design http: / /nlaiLaol.com/ 35478 - 111 /aol- 6 /en -us /mail /PrintMessage.aspx
1 of 2
From: Caner, Tim <Tim.Cazier @state.co.us>
To: jamespirc <[e-mail]>
Cc: Means, Russ <Russ.Means @state.co.us>
Subject: RE: Latest Email on Spillway Design
Date: Tue, Jan 17, 2012 11:21 am
Mr. Pierce,
Thank you for the full link. I was able to download the document you referenced and review it.
It appears to me that you are pulling pieces from different designs that have not been used in one design application together. A spillway is a
hydraulic system and each element of the design needs to function in conjunction with the other elements to minimize the potential for failure.
The "earth plug" from the Pennsylvania Dept. of Environment is intended to eliminate the need for a cut off wall in the riprap Tined spillway, not
cover the filter fabric. The earth plug needs to be a minimum of five feet long, but the detail indicates the riprap -lined portion is at least 90 % of
the level section of the spillway. The Golder design was a preliminary design/not for construction/for discussion purposes only letter. There is
no way to discern if what was proposed was in fact approved and/or built. In addition, the proposed Golder spillway slopes do not exceed 30 %,
the proposed J Bird spillways are 33.33 %.
The Division recommends that in order to avoid additional time for review and increased costs to the operator for special designs, conventional
spillway designs be proposed in future revisions.
Thank you. Please contact me if you require additional clarification.
Tim Cazier, P.E.
Environmental Protection Specialist
Colorado Division of Reclamation, Mining and Safety
1313 Shemian Street. Room 215
Denver. CO 80203
ph: 303- 866 -3567 x8169
fax: [phone]
[e-mail]
From: jamesnirc(nl aol .comimailto:iamespirc(aaol.coml
Sent: Thursday, January 12, 2012 3:20 PM
To: Cazier, Tim
Subject: Re: Latest Email on Spillway Design
Mr. Cazier -
Sorry about that, this should do -
http: /Iwww.yukonwaterboard.ca/resis tern /ouartzloz08- 084/\bluti %2021I.6.3/\6ltine %202 %201- 6 -3.ndf
Sincerely -
James Pierce, Jr.
Original Message
Front Cazier, Tim <fim.Cazier(a//,state.co.us>
To: jamespirc <ian espirc(rdaol.com>
Sent Thu, Jan 12, 2012 2:56 pm
Subject: RE: Latest Email on Spillway Design
Mr Pierce,
We had an MIRE erecting yesterday which has taken a large part of my time this week. I had intended to respond to your email today. I did receive the subject
email. However, the links you included were truncated in the middle with "1...1 ". I was able to Google the Pennsylvania dept of environmental protection
document, and download it. Unfortunately, I was unable to discern what to effectively search for with the other link:
www. vukonwaterboard. ca/ resisters /.../uolume %202 %201- 6 -3.pdf
As such I have been unable to effectively evaluate your proposed approach, not being able to review this document.
If you could send me a complete link, it would be helpful.
Thanks,
Tim Cazier, P.E.
Environmental Protection Specialist
Colorado Division of Reclamation, Mining and Safety
1313 Sherman Street, Room 215
Denver, CO 80203
ph: 303 - 866 - 3567 x8169
2/9/2012 12:38 PM