Laserfiche WebLink
4 <br />• In the TEA !/CO-010-9-183 Seciton IV ld prepared by the BLM, there occurs <br />a statement that Wyoming Fuels will avoid mining through all drainages. <br />As this is not true, Wyoming Fuels must acquire written permission from <br />the BLM to mine through the North Fork of Bolton Draw as shown on the mine <br />plan of April 14, 1981. <br />Main Bolton Draw <br />The 55 acres of land historically flood irrigated (discussed on Page 110) <br />should be shown on a map. <br />The records of diversions of the Bolton Ditch, indicated in the Willard Owens <br />Associates report, show that the ditch has been used as recently as 1976. <br />This suggests that flood irrigation in Bolton Draw is conceivably a current <br />agricultural practice. Is there any other additional information which can be <br />provided to support the applicant's contention that Bolton Draw, as indicated <br />on page 111, is generally not suitable fox growing cash crops? <br />To the degree possible, the applicant should indicate how the 55 acres of <br />historically irrigated land was used in the past. Information concerning the <br />success of these practices should be provided, if the information is available. <br />The applicant should quantify, to the degree possible, Che amount of available <br />water which naturally originates within the basin, vs. Chat amount contributed <br />by. irrigation return flow trom the trans-basin Spear ditch diversion. <br />As stated on page 112, studies concerning subirrigation potential were limited <br />only to the North Fork. To what degree is subirrigation of importance along <br />Main Bolton Draw? All available information in the permit application indicates <br />that the Main Bolton Draw is a probably AVF; information must therefore be <br />provided to substantiate the existence and importance of alluvial ground-water <br />in the main draw, especially from a subirrigation standpoint. Other indicators <br />of sub irrigated conditions, including vegetation surveys and soil characteristics <br />(mottling, rooting depths, etc.) should also be included if the information is <br />available. <br />To what extent could seepage from the sedimentation ponds impact the potential <br />AVF along Bolton Draw? Assuming that the ponds contain water with an increased <br />salt content (due to evaporation and storage of pit-inflow groundwaters) is it <br />possible that salt-laden waters could migrate to the potential AVF via shallow <br />groundwater flow? How would this affect the subirrigation potential of the <br />Bolton Draw AVF? <br />2.10 Maps and Plans <br />2.10(2) Permit & Adjacent Areas <br />The statement of map certification is not acceptable. All maps and drawings, <br />which require professional engineer certification, must bear the seal and <br />signature of a Registered Professional Engineer. <br /> <br />