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<br />, <br /> <br />..... <br />o <br />en <br />(..) <br /> <br />Program" (APPENDIX C). The policy provides for consideration 'of <br />the interception of ground water which would have,normally <br />reached th~ Colorado River System in a reasonable period of time. <br />At the La Plata Mine, all the ground and surface water accounted <br />for in the mine pits was intercepted on its way to the San Juan <br />River, Discharge from the pits to the river increases the rat,e <br />of flow of ground water to the river and somewhat delays the <br />ultimate flow of surface water to the river, <br /> <br />~ <br /> <br />ComolianceiAlternatives <br /> <br />In order to meet the objectives of the salinity standards, <br />alternatives for compliance are presented and compared. <br /> <br />1, Discha~qe to the San Juan River <br /> <br />Maximum mi~e pit flows are estimated at 148 acre feet per ye~r or <br />about 132,117 gallons per day. Of this flow, 87,483 gallons per <br />day are attributable to intercepted ground water flow of the La <br />Plata Valley alluvium and the Fruitland Formation. Based on <br />analytical ,data provided in APPENDIX B, the weighted average <br />natural salinity for these ground water sources combined is 1460 <br />mgjl, or about 1067 lbsjday of salt load for the maximum flow3' <br />/ <br /> <br />The balance of the maximum mine pit flow is 44,634 gallons per <br />day of disturbed area runoff, Average salinity of water quality <br />in disturbed area runoff ponds, as determined from analytical <br />data provided in APPENDIX B, is 394 mgjl. The salt load for this ; <br />surface water flow would amount to about 152 lbsjday. <br /> <br />The combined ground water and disturbed area runoff maximum flows <br />would produce a salt load of 1219 lbs per d~y. This maximum salt <br />- <br />load is less than the 2000 lbsjday load threshold identified in <br />Section I. B., 4. of .the Policy for Implementation of Colorado River <br /> <br />8 <br /> <br />! <br />,", Jl <br /> <br />J" j <br /> <br />:,i""k."'_ <br /> <br />. ~ ,;, AH',-. .::cirA ~,.;.-_--!kL-> <br /> <br />