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<br />w <br />o <br />r.:. <br />CD <br /> <br />exceeding five years) until the poles become established and can withstand the pressures of <br />livestock grazing. Estimated total cost. is $12,000. <br /> <br />Amoco Production Company donated equipment and manpower to construct four sediment <br />retention dams in the Onofre Jaquez Canyon, tributary to the San Juan. The BLM seeded the dams <br />to stabilize the soils, and Amoco's costs were estimated at $6,000. Estimated salt saved was 6 <br />tons/year. In the upper reaches of the Little Colorado River drainage, the Socorro District installed <br />40 small earthen erosion control structures and spreader dikes, and sloped 20 headcut channel <br />sections. <br /> <br />Nevada <br /> <br />In 1991 the Clark County Regional Flood Control District, Flood Control MasterPlan <br />Environmental Impact Statement was completed and approved. This Environmental Impact <br />Statement (EIS) enabled the granting of rights-of~way for the installation of flood control facilities <br />on BLM administered lands. One detention basin was completed in FY -96. Although the primary . <br />objective of these facilities is to minimize the loss of life and property, there is an undetermined <br />reduction of dissolved solids entering the Las Vegas Wash and Lake Mead. In addition to the total <br />of seven basins constructed/underway in the Las Vegas Valley, a right-of-way was granted for a <br />detention basin under construction at Laughlin; Nevada <br /> <br />A plan was completed in FY -95 to enable the removal of 82 percent of the burro herd (450 <br />animals) from the Gold Butte Herd Management Area (in cooperation witl) the Yuma District, <br />Arizona). A portion of the 450 target was removed in FY -96. Some reduction in salt loading to <br />Lake Mead is anticipated. <br /> <br />In FY-95 the grazing preference on the Wilson Creek Allotment was reduced. Livestock will be <br />run at 80 percent of the former level. This prescription remained in place during FY-96, and will <br />be reevaluated in FY -9. <br /> <br />Wit!1intheLas Vegas District,17 allotments (141,000 acres of highly salinesoils) tributary to the <br />Colorado are affected by the Desert Tortoise Biological Opinions of 1991 and 1994. During FY- <br />96, grazing restrictions remained in place consistent with the Biological Opinions. . <br /> <br />Utah <br /> <br />The Vernal District continues to build a few erosion control structures each year. Four structures . <br />were built in .Brush Creek watershed, and six in the Castle Peak watershed, saving an estimated <br />three tons of salt per year per structure, through 1010 funding. The Parlette Wetlands also <br />continued producing benefits, including the trapping of 12,000 tons of sediment and 100 tons of <br />salt in a system of dikes and ponds. <br /> <br />Approximately 200 acres of PJ were removed through commercial firewood sale. The treated <br />areas were cleared and reseeded for an expected 10 tons/year salt savings on the Castle Peak <br />watershed. Utah Division of Wildlife Resources purchased the seed, and BLM funded the aerial <br />seeding. The Monument Butte Oil and Gas Field saw 60 new wells in 1996. As part of this. <br /> <br />16 <br /> <br />