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gSe~rv~ing Onr Clients Since 1980 <br />VW <br />~C Engineeriing <br />A DIVISION OFWESTERN WATER CONSULTANTS, INC. <br />Civil Environmental Mining Water Resources <br />61 I Skyline Road Laramie. Wyomino g2070 (307) 742-0031 FAX (307) 721 ?913 E-mail infolar@wwcengineering.com <br />July 30, 2002 <br />Mr. Crellin Scott <br />Colowyo Coal Company L.P. <br />5751 State Highway 13 <br />Meeker. CO 8]641 <br />RE: Colowyo Impoundment Evaluation, Gossard Pond, 003A <br />Dear Mr. Scott: <br />WWC Engineering (WWC) has performed an evaluation of the Gossard Pond at the <br />request of Colowyo Coal Company. The evaluation was performed following the outline of the <br />Streeter Gulch Pond evaluation submitted to you in March 2002. The objective of this eXercise <br />was to evaluate compliance of the Gossard Pond with Section 4.(15.9 of the Division of Minerals <br />and Geology regulations. <br />This submittal includes the following attachments. <br />1. Reclamation Blocks Gossard Pond, 003A. This drawing depicts the post-mining <br />topography on which the pond evaluation was based, the Gossard watershed outline <br />and the reclamation blocks by year from which the worst-case drainage scenario was <br />developed. State Highway 13 and Good Spring Creek are also indicated. <br />2. Sedimentation Pond Redesign Gossard Pond, 003A. This drawing depicts the <br />post-mining topography and the SEDCAD 4 watershed dissection. <br />3. Pond Footprints Gossard Pond, 003A. There are no post mining ponds in the <br />Gossard Pond watershed. <br />4. Gossard Pond 003A As-Built This dra\ving. provided be Colowvo Coal Company. <br />\vas used to obtain the dimensional information necessary to model the pond in <br />SEDCAD -!. <br />• <br />UTUYIt LOC C:7U,A'.S <br />Iti19 Trrta ~~enuc In' F:hl FIIM SVrn %III Anllar Dri~t. Sli ilt '_3i <br />SheriJan.\\\aming 8'_5111 Gillcua_\\~oming e271G Ca.pcr. \\'~umili_Y_'001 <br />Phmx IA1716T_-0761 Phone 1?1171 GS'_-18VU Phunc 13D71173-707 <br />rac (i(171 671-1_6? Ris 11U71 G8'_-'_'_i7 Fay 131171'_37-08'_5 <br />P:-moil: inli~shrC wx~ccnginzerine.ann F-In;lil: infnilt(%~~ICCanginrori m_.com F.-muiP. inli~csp@w~cccn~inacling.cnm <br />Rle al BIo.A Built in _~ <br />i \\'a>t G"Acnulc. Suia` 1F <br />f12CI1J. ~InaWna 19681 <br />Nhonc 110 6 1 11 3-3)6] <br />P:n 11(IG1117-12i4 <br />F-mail: infohlnC`wwctnginccrin~.com <br />