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~~ • <br />.' <br />~g Cyprus Yempa Valley Coel Corporation <br />An AHihele o1 Lypus Mms/els Lompeny <br />~ ~IIIIIIIIIIII <br />III IIII 999 <br />29587 Routl County Roetl N27 <br />Oek Creek. CO 80467 <br />Pnone (30318793800 <br />January 19, 1989 <br />Uavid Berry <br />Colorado Mined Land Reclamation Division <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203-2213 <br />~ ~~ h~ %~~ ~ I ~ ~ <br />~i . 'OPV <br />Dear Mr. Berry: <br />Re: Channel Repair Field Notes <br />Attached, please find the field notes from ACZ that were generated <br />during their supervision of the channel repair project. I believe these <br />notes adequately address your request. <br />In reference to the materials testing program I have attached the lab <br />reports which addresses the size gradation of materials placed in channel. <br />In reference to durability the results are as follows: <br />spec gravity =L.77 <br />L.A. Abrasion (ASTM C-131) = 18.6a <br />Freeze-tha~•~ (12 cycle) = 0.5 p <br />These results are on the rock from the pit located near Craig. <br />I believe the above and attached reports adequately address your prior <br />request. If there are questions, please contact me at your convenience. <br />Sincerely, <br />Richard Milis <br />Supervisor; Environmental Affairs <br />RAM:dg <br />Attachments <br />~ a • . is F.-~ - <br />_. ~. IIVe.I ~6f. <br />~~~5 <br />