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MRR.16 '9(3 3~54PM DM~JCT <br />nIVISION OF MINERALS AND GEOLOGY <br />Urparuncnl U(Ndlur~l (tCSQYICCS <br />L <br />I ' I i Sham. n SL, koum 21 <br />Urnvcr, Culur.rdu 80203 <br />I'h•Iner ilal) R66-'i ;b; <br />UA'fE: March 16, 1998 <br />TO: Harry Ranrlcy <br />PROM: Dacl Mathews <br />RE: New Hori~.nn'1'R-36 (Revegetsttion Smndards) <br />Permit No. C-81-008 <br />Harry, this is an addcndtmm to my review memo of March 11, based on my n;vicw of the <br />supplemental mnterialr you rent to me, which I received today. <br />~~~~ <br />])EPARTMENT OF <br />NATURAL <br />~soURCEs <br />kuy Nnnvr <br />CuvCrnur <br />~.nnr e. i IK llllr.nl <br />R.?u~uve inrcn,K <br />Mii lldpl II. Long <br />I)n i..IVn nlrtv'ro' <br />The additiutmal questions I have relate to the October 23, 199( F indiugs docwnent, as well as to <br />the proposed revision. <br />I . Page 22, Section (;, of the findings document indicates that, if production comparisons <br />e based on baled hay counts are used, the technique would involve weighing of hay bates, <br />rod oven drying and weighing of samples from the bales. If this procedure is to be <br />retained as an option, a detailed description of how data will be collected and compared <br />to established standards will need to he included in the application, including procedure <br />for weighing whole bales and subsanmples, sample adequacy determination and statistical <br />tests ol~success. <br />Page 22, Section D (2) of the findings references grass hayland production standards <br />based on three year rca)rds (19R7 -19R9), whereas tlme permit application only appears to <br />reference one year of record (1987). If three years data is available, the information <br />should be included in the application, as the date would have possible implications with <br />respect to modification o1'success standards. <br />3. Also, Section 1.) (2). of the findings indicates that dry land pasture success standard will be <br />625 pounds per acre, based on a weighted average of the potential production for the <br />Travesilla -Pinon soil complex. T•he standard as proposed in the revision is 500 pounds <br />per :u;re, based on potential production of the Shawano soil series. Justification for basing <br />success standard on the Shawano soil series rather than the Travesilla-Pinon complex <br />originally approved should be provided. <br />3~' 2410336 III'll'll'IIIIIIIII <br />STATE OF COLORADO <br />miscm i ne\nhotr36a.mem <br />cc: Larry Routten <br />