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<br />~~ <br />,~' ~P~-~ <br />• F. scau,AF s Assocz~s~FS, ~C. <br />U. S. 74IIgStAL & IJil~ID SUHVf'YORS <br />P. O. Box 631 <br />L>?lta, Colorado 81416 <br />April 29, 1981 <br />Air. Al Anau~dson <br />!•:estern Slone Carbon, <br />F. C. Box 1526 <br />Salt La}:e City, Utah 84110 <br />Dear P1: <br />~,,~~~ i3 <br />~ ~~~s~~~ <br />r~;AY 6 1981 <br />WESTERN SLOPE CARBON, INC. <br />?n response to your letter dated April 22, 1981 we x.211 set uo a Subsidence <br />!bnitoring Program. on a cuarterly basis beginning with flay 1, 1981 and will <br />continue to nonitor on or aro.rid t}se .first day of each three rmnth period <br />orith a field check of each station. A revert of our `i~aings will be for- <br />warded to you within ten (10) days. IIurino the winter months when snow <br />conditions prevent vehicle travel to the upper stations a check of the lower <br />stations will be made and snow machines will be used to trv and reach the <br />upper stations. T:'e will note in each report the reason for not showing <br />• a particular station. - <br />"_Rie problem with points C and D North of State Hichwav 133 occurred <br />when the man in charge of this project left our emnlorrn~t, i'nere was <br />a field error in his work at the time we su}mitted our report and t}~re- <br />fore, we did not shv~r these stations. <br />Last Fall while locatinc points for the new area Nor'rh of highway 133 <br />we wire also over in the old 2-Fast area. I instructed the crews to shoot <br />in all old points that the~~ were able to find while in the area, No effort <br />H.as made to clear brush or rehabilitate points not readily available at <br />that titre. Later on in the year when w~ c~-e reeuested to rronitor the old <br />stations an attempt ~.+as rode with 9x4 vehicles to reach the points. A <br />boulder had slipped across the road preventing access. T;fien the boulder <br />was re,~uved we aq_ain tried but mud conditicns made it im*~ossible to reach <br />the area. A_`ter this attempt I sent you tl~ information then available <br />in hopes it would suffice until Spring. <br />T~~ith a regular program of monitoring every three months we will have a <br />?otter chance of gathering the data OS~7 and CAST'. rewire. In the next <br />report I grill list what is physically set at each station. <br />I ho;~e this answers any c_uestions you may have at this titre. <br />• Sincerely yours, <br />E. SG-y1AF' & 135SOC7J~lES, INC. <br />Farnest E. £chaaf, P sident <br />EFS/jar <br />Inc. <br />