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U U'ARIMCNi Or NAT111141 HI $IIU II (. F;. <br />n hlnn~c {'a.uir, [,cailrvr I1., r, nv <br />~llll~l;l) l,a~l) l{l~:(;I,?1111;1'11O\ <br />•123 Gnn1C I1TAl Ilu d(6nq. 13115hcr nian Sirnrl <br />Denvnr, Golorauo 0020:5 ~(rl )303) 839-3567 <br />David C. Shelton <br />Director <br />July 2, 1951 <br />hfr. Scott Patten <br />Flatiron Companies <br />P.O. Box 229 <br />Boulder, Colorado 8030[ <br />^ <br />Re: Sediment Control PLvI for thr_ Northyatr_ Toad-out <br />Dear Scott: <br /> <br />I would Iike to respond to your June 2J, 19R1 letter regarding plans for <br />sediment control for the North ya to load-out faci li til. <br />The Division cannot 1.'nivr, the water ~ualiCy r;t.~nrlarrls .urrl effluent <br />limitations as outlined in ?.05.2. The Division con rrr•ult exemptions <br />from tM requircrr,n_nt to ryr:; .T17. surface rlrninarlc through a sc~?imcntation <br />pond (or ponds), or a wa per treatment fa ci litq. ]n nnlcr for Lhc Di vi,si on <br />to giant such an exemption, the. applicant/operator nnc:t rlcmonstrate on r_ <br />of the following (in addition to the dctcrminatial that the area is small <br />in extent): ' <br />A. Sedimentation ponds and/or treatnr~nt facilities arc not necessary <br />for drainage to meet the effluent linutations of 4.05.2. <br />B. No surface runoff occurs in the area Cor which the exemption has <br />been requested. <br />~~~' G It is impractical to construct a sedimentation pond due to constraints <br />• relative't6 size of the affected area. <br />If the Division grants a small area exemption to an .alq,.licant and subser{ucnt <br />field examinations indicate that the limitations of 4.05.2 are not being <br />met, the operator must agree to install a conventional sedinr_ntation control <br />system. <br />Upon close exarnination of thy, rlopression exi:;tinq on site which hn^, been <br />proposed as a sedimentation basin, the staff has rlc•ternu/led that structure <br />is w acceptable since Che depression is largely fillorl with tar. <br />Even though the Cunlherland Uitch has been abnnr/oncd, the staff needs to <br />know whether anyone has water rights to the water which would flow through <br />the ditch, and whether the landowner or lessee plans to utilize it in Che <br />future. <br />