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<br /> <br />STIPULATIONS <br />Mine Plen <br />Coal Lease C-25079 <br />Colorado Westmoreland, <br />r~ <br />u <br />z ~. <br />The following stipulattona shall became a part of the Colorado <br />Mcstsarelend Mine Plan: <br />5ttoulatlone on NvQroloRv <br />1. The erosional stability of the upper baatn draLnape area and <br />diversion ditch shall De routinely assessed and correctlva messures <br />aoDloyed wherever necessary to ensure ntabiltty. Tne diversion ditch <br />shell not be a permanent feature on the post-mining terrain unless ell <br />afCecttd landowners eo,ra+lt to perforce cell necessary maintenance to <br />eneure erosional atebSllty and do so prior to abandonment (release of <br />Dond) of the mine. <br />2. The operator shall furnish to the Hining Supervisor, for <br />approval, a design of the vegetation buffer strips showin,T how high <br />flows (in excess of about 0.5 cfe) will be routed quay from the <br />vegetation buffers and [hr•ouKh pr•oteeted channels to Che seQlmenta- <br />tlon ponds, the nature Of vegetation now lOCated !n these Duffer <br />areas, and the routine Inspections that will be e-ptoyed to monLtor <br />for increased erosion. <br />3• Rlprap shall be placed Sn channels Sn both the disturbed <br />and undisturbed areas where excessive erosion may occur, dperator <br />shall furnish the Area N.ining Supervisor design Castors used Lo <br />determine the anount, sine, and location of thv rlprap. <br />4. Drainage from the coal load-out Brea (disturbed area) shall <br />be directed into a sedimen[atton ponA(s1 in compltance with Lho final <br />interim OStf regulations, 30 CrR 715.17, publlafted in the Federal <br />Resister an February 27, 197&. <br />Stipulations on Hvdrolo_pic tlonitorlnlr Systems <br />1. The Location and type of sampling shsll be determined by <br />site-specific conditions for susnenaed soltda upstrear and at the <br />fine! discharge pole[ of anannels with sedlrentatlon ponds end <br />lrtClude floe activated measuraoents, as practical. <br />2. Measurements oC sediment accumulirtlon shall be established <br />for ponds on a periodic basis or after there has been elp.nifloant <br />flow into ponds. <br />3. Installattan of an eroalon/deposition measuring systen <br />shall be established at: <br />11 ~. _ ~. . <br />