2006-01-31_REVISION - M2000158 - Laserfiche WebLink

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...-.. f. LARRY E. O'BRIAN ' , _ _ ~ - ~ a "' '-74$51IANCE DRIVE, SUITE 205A FOUNDER ;;;,`.,-,,._ rt,. _~ _,'~ ,r, _ ~ _ ~~ ~~~~ _ ~~,~,ARVADA,,COLORAD0~80003 ,. .:. .. - ......... .,,303-023-`/297 , *-•.-;-r~^:~~ ~7U -; ~,.;.:. .. .. - - °'-... ~ ...... ,=FA7C'3U3-423-7599'. January'26; 2006 "' ' ~iECEI~/E® • Ms. Erica Crosby ' Division of Minerals and Geology •' 1x13 Sherman st., #215 JAN 3 1 2006 Denver, CO 80215 }.. " Division a( Minerals and Geology - Dear Erica; '' J ,; r RE: Platte Sdnd & Gravel LLC .~~ !~ S&H Mine, Permit # M-2000-158 ~K'~~ „'' On behalf of our client Platte Sand & Gravel LLC (PS&G), I wi'_]. respond to your January 3, 2006 second adequacy letter in the order ana number format presented in that document. 1. After reviewing the current Reclamation Maps and those under th.~ - approved amerdm_ent ? found that any roads remaininc when reclama- tion is. complete will be from 15 .to 18 feet wide. In addition, this-road currently crosses an area that will eventually be mined so it will be removed at some time in the future. The road that will be left into the mine from bridge will run along the divider between Highlands Take and Bluff lake. This road will be no wider that 18 feet so it is consistent with the reclamation plan. 2. We are still, waiting on Kerr-McGee (KM) to final;.zt the agreement. As 'I keep promising, as soon as we have it I will Set the Division a copy. PS&G personnel talked to Alvin Kirkpatrick of the KM Gathering Unit when the road crossings were bf.:ing constructed. Alvin said the pipeline was 4 inch pipe buried 4 feet below the surface and said putting an additional 48 inches of cover would b~ adequate to protect the lines. The total cover is now approximately 96+ inches of fill over the line and this additional fill protec+:s them per the owners' requirements. Allen Sorenson and I talked about this issue during the January Board hearing. The only information we could get from KM is notes: above so Allen suggested that doing calculations to determine the cover amount without having the actual pipe thickness and type would be nearly impossible. With Allens' help researching the problem, h•. found two sources on the Internet that suggest typical depths for gaslines that cross public roads are from 50 to 90 inches depending on the jurisdiction. Platte Sand & Gravel will commit to have t: minimum of 92 inches of cover on the 4 inch gaslines where haul roads cross them. On smal'_er or larger diameter lines an analysis will be submitted to ' he. Division if the crossing is not covered by an agreement as pzc~~cribed in Rules 6.4.19(a) or 6.4.19(c).