Laserfiche WebLink
s <br />14780 Highway 145 <br />Dolores, CO 81313 <br />TeI. No. 970.882.1525 <br />December 29, 2004 <br />Mr. Tom Bird <br />National King Coal <br />Hesperus, CO <br />SUBJECT: Summary of settlement Crawford Residence <br />Dear Mr. Bird, <br />Methodology: A three hundred foot buffer azound the residential structure was <br />maintained with one small azea that encroached into the buffer. Two grouted steel rods <br />were installed at a distance of one hundred and three hundred feet from the southwest <br />corner of the house. Additional points were installed azound the house. A temporary <br />bench was installed north of the house. Surface cracks were located, as necessary, to <br />review movement. Surveys were conducted more or less quarterly and modified to before <br />and after the irrigation season, spring and fall seasons. <br />Data: The survey was made with an optical instrument and the survey of November 19, <br />2004 utilized a digital level. With all level surveys some errors will occur due to weather, <br />rod placement, reading the rod, optics, etc. The rod was plumbed to minimize errors in <br />readings. In my experience it is very difficult to eliminate errors and an error of 0.02 feet <br />was assumed. The results are found on summary sheet prepared by Maness & Associates. <br />In my opinion, the difference of about 0.1 feet azound the house is reasonable, as no <br />distress in the structure has been observed. <br />Conclusion: Survey should continue by Maness & Associates twice a year. A walkover <br />the property with the owner should be made in the fall but not during hunting season. <br />Any cracks should be filled at the owner's request. <br />The angle of the draw appears to intersect the surface approximately three hundred <br />eighty-five feet from the southwest comer of the residence that is outside the three <br />hundred foot buffer. <br />I will be in contact with Mr. Maness to answer concerns he might have. <br />Sincerely, <br />~~ z s:~- <br />Harry L. Siebert <br />