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~~ <br />n <br />u <br />'~ TUTTLE APPLEGATE RINDAHL, INC. <br />.= Consultants for Land and Resource Development <br />Mr, John Ooerfer <br />Mined Land Reclamation Oivisinn <br />Ju 1 y 'c'c, 1988 <br />Page 9 <br />The stor•at ivity of the aq+aifer has rn}t been deter•mi ned 6y <br />field analysis. Usually storat ivity is in the range of 10i~ <br />to 3~%. It is probably in the range ~~f ctaY• t+~ 'c'SY f~~r this <br />part icutar area. If we ass+_rme that 25Y• is precise, thel'1 thee. <br />vol+_ime of gr•o+_~ndwat er that would be released ft~r the t+_~tal <br />reining pr•.~d ect wo+~ld be approximately 4~D~D acre-feet, This:. <br />wo+_iId +~ecur aver the 'c'2~ year life of the mine. <br />I4. In yo+ar• files, yo+a have the Environmental Analysis Addendum <br />which includes the groundwater nronit~~ring blan that was <br />prepared for this application. Gr•o+_~ndwat er• wilt 6Er <br />monitored fr•+~m b~-+th existing wells and fut+_~re monit~~ring <br />wells that will be installed at each dhase of the pr•~~~ect. <br />hlonit•~ring wells will be located along the channel within <br />stands of trees that ar•e sched+al ed for• preservation. Thesea <br />future wells will c+~nsist of oer•forated PVC pipe b+aried <br />vert icai ty to a depth of I0 to 15 feet. The pipe wilt ge;~ <br />covered with a geotextile fabric t+~ prevent si Itat l•~n. each <br />well wilt 6e capped to obst r•+_~ct debris fr•onl enterinc. <br />E x_h161t__J - Vepetat ion <br />IS. a. Existing upland plant types: <br />glue Drama <br />Western Wheatgr•ass <br />Sandberg bl+_~egrass <br />Plains bluegrass <br />Sunegrass <br />Cacti, barrel and <br />pr ickl ypear• <br />Sagebr•+_rsh <on slopes) <br />S+L+Y. o f m i H <br />PBX <br />5Y <br />S% <br />SX <br />SX <br />c'% <br />laaX <br />Percent ground c~~ver - 3~DY. to Ei~21X <br />