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Four States Aggregates, LLC <br />m ~~ , dba tlaycamp Gravel <br />P.O. Box 1568 <br />"M• Cortez, Colorado 81321 <br />27 August 2003 (970) 565-3388 <br />Mr. Wallace Erickson ~ R~%fr~ <br />Colorado Division of Minerals and Geology <br />Durango Office AUK <br />701 Camino del Rio 1 ~ 70p2' <br />Durango, CO 81301 ~++ra <br />RE L NE 7 AMP P1T M 001-001 '~ n0f~ ~~~ G'~°9Y <br />C <br />SUBJECT: Letter of clarification and status report <br />Dear Mr. Erickson, <br />As discussed in the Annual Report letter of 20 May 2002, work is now proceeding at the <br />Line Camp Pit. Following approval of the substitute water supply plan (attached), <br />issuance of the water well permit (attached), and issuance of the CDOT highway access <br />permit, we began further development of the pit, and will be mining and processing <br />materials in the near future (to be used initially for construction of the highway access <br />lane, shoulder, and ramp). <br />As discussed, the corners of the permit area have been marked with posts. The final <br />location of the road access ramp is within the permit boundaries, as planned. <br />The piezometer standpipe (monitoring well) is monitored on a regular basis. There has <br />been no variations in water level in that standpipe which have not been matched by <br />drops in water flow in the river itself. <br />As discussed in the annual report, the poor precipitation has not helped the grass on the <br />berms along the south, southwest, and southeast sides of the pit (which was seeded <br />last fall), and most has died in the drought, together with vegetation in areas not <br />disturbed but not irrigated. We have taken action to control thistle and other weeds, <br />which are often the only plants surviving the drought. We anticipate reseeding the <br />berms when weather improves, probably at the same time as seeding on the highway <br />access construction is done. Assuming some fall precipitation, that will be done late this <br />fall. <br />Because the river is so low (averaging 50-60 cfs), the water table on the site has also <br />been very low. As discussed with the DWR and Montezuma Valley Irrigation Company, <br />the excavation has not approached the water table, except for a single water hole about <br />30 x 30 feet, which is used to obtain water for dust control and construction of the <br />highway access. Total consumption is being tracked, and at present amounts to less <br />than 0.25 acre-feet. Water has been stored in Groundhog Reservoir for release as <br />