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~, ' . STERLING READY•MIX CcONC(2ETE CO. STERLING, COLORADO 80751 RECEIVED FEB 1 9 1991 February 11, 1991 Minec'Land Reclamation Division Mrs. Barbara Chiappone Colorado Mined Land Reclamation Board 1313 Sherman Street Suite 215 Denver, Colorado 80203-2273 Dear Mrs. Chiappone: Re: Annual Report, Sterling Ready-Mix Concrete Co., Inc., Riverside Pit MLR No. M-76-056 Our files indicate that the anniversary date for this permit is February 22, 1991. During this year we were awarded a contract to supply material for an interstate 76 job near Proctor, Colo- rado. To meet the contract specifications we had to move into Stage III ,where a courser material was available. We are current- ly working on a modification to the mining plan for this pit and will have it submitted by the end of February, 1991 We will deal specifically with each of the Annual Report questions as outlined in Section 2.41 of the Rules an:9 Regula- tions. 2.4.1 (1) We continued to mine in Stage I where previously disturbed. Mining was within the existing lake area and not associated with the bank areas. During the summer of 1990 we obtained a contract to supply gravel for the Interstate 76 job bear Proctor, Colorado. As we started to mine the material in Stage I we found it did not contain adequate quantities of course material. We tested Stages II and III and f~>und that the best material for our needs was on the southern end of Stage III. We stripped approximately 10.97 acres nn Stages II and III, this area is shown on the map as the disturbance areas in those stages. We then dredged the area leaving a 5.10 ac ± lake. As is typical with this pit we encountered a large amount of waste sand, mixed with the gravel. We eventually use this sand for other purposes or use it to establish underwater J `~l ~1~