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<br />and a soil _ens _rra ..on Service offic_aI in Crazes, Coiorar?c. Therefore ,_ based
<br />on tF.e lack o." irritation potential and currently irrigated crop _Iar_.9 Johnsen .
<br />-Gu7c~s ceterr..rne~ not to to 2n A~VF'--
<br />The vali_u esscc=at°~with Pyea,tt_ u_'ch contains :z.-rcensoli~ated streaa-laid
<br />~-
<br />eposits. rli of t.4ese alluvial materials are ocatad do:,~,s`t:=ea,~-~5= -.._ pro-
<br />poses permit area and wil_, therefore, rot __e phgsicallg disturbed bu mining.
<br />Lard use along Pyeatt Gul,:h consists ef =roslard and undeveloped ranceland flee
<br />±lap 7`-F). Unir_*isated :o.%reat and native mass Fat are gro:on alon7 Pyea-`_ Gulch
<br />and constitute 71° acres of cropland. The averaee anruaI Nate: yield for Fyeat`_
<br />Gulch .s i54 acre-'eet. ^he apeli cant, throuch _..teI7I E'[ti5 'Ji hr. 70Ca1 .`-'Oll
<br />Conservation. Service officials, 7ra~determ_ned.Thhat this is an insuff_c-ent
<br />amo;znt ^_f warer to economically practice flood irricat~cn. Flood irripaion is
<br />occasierally nzacticad in t. e reatt-e cn valley. Th? Pfc.Vamara D- tch (see f~rap
<br />?731j _., fed .pater. from a dee^, bedroc!: well. The ditch irritates abcut I50 acres
<br />o~ cres`_ed [ar:eat Grass. Crop yields rana° frcm one to one-third tons/acre. The
<br />~..•e71 is completed 'n becireck to a dept` in. e:~cess o.` ~OJ feet. Since the ditch
<br />~~ not fed by surrace eater or a=luv: al around water, Pveatt Gu1cn cues not
<br />constitute an ::VF based u_rcr, t!:e existing flood irritation. __~a s~rplied bu
<br />the applicant- indicate that the deet:, to tine all u~~ial rater table is __o~m ~.o'
<br />feet to -.' feet. This wester tab_'2 is too dee_:, fcr wheat and native Grasses tc
<br />be subirricated. There_`cre, used on tixr 'acr: cf sufficient water available in
<br />~ire~drair.~a~ e~fer ~~~ rcu'tural e.^_~. it. - 'eatt ,:u1cc is d.et=r.Tia^s ,.eic to b='~n
<br />_ ~_uv~ar ~ 1 :-a 11e~ rIc_o"r`- - - - -~ -- - - --- -- ---- - - _.- .
<br />The aFP.j-taint Iras_iae.;=i fi ed ^nconccli d_afed s_rc.:.n-iai3 aerosi is alon4 ti:= rail?y
<br />o~._ cme Gulch. x,11 of these alluvial ratar'aIs are located s°o:~i.-rst_eam of t.9e
<br />;-roposed :pining at the Trapper Nine. Ir. fact, within this S-year __rmit term,
<br />:ninint will not encroach upon any portion of tS~ F1mTe G::~ch drainage area. Land
<br />uses aiona Flur;e ~Gcich consists of undeveloped rangeland and cropland. :Fore of
<br />these crcps are currently or were historically food irrigated. Data subrrc:ted
<br />by th_zp~licar.t find _c_te that depths to fire alluvial wate_=tabla_are shallow
<br />errou.gh (ab/ut 2 feet; for tY.e ~_falia to be subirrigated. T.'le applicant !:as not
<br />_.~----
<br />provided erg acditiona7-da'ta"to r~=f'ute this thsor?. TherefereLF'ume :;ulch is
<br />-~_ _
<br />determined to_be_ar dlluvia1.~11~.y- ~'-ocr. he .~..^un3ariss of file tVF are shown
<br />on tSao Pi35.3 0: the permit application. i~~e ocz'tions of the dVF are proposed to
<br />be phusically disturbed by mining fir. this 5-near pewit ten . Potential impacts
<br />to the Flume Gulch AVF are discussed la-er it this dccument. Prior to miaint in
<br />the Flume Gulch drainage or in fire v'c.:nitU t the drain~ye o'uriro fut:zre perm.t
<br />terms, all 'slues relating to th~s Air? mug i;e resolved.
<br />Tare ;amra :fiver ~,-ai'ep meets the n;u:.r:_:>;-c.; Ln :~o c.iassiri~•~d as _.. lv°.That'is,
<br />~~_ ~,-onta in; ^r:consclida tcd ..trees n-l:u~? ~,:;n; :i (. ...ai suFf.icio~rY ,'i n;nrn;.; nr- i~~4n~ to
<br />be utiliae^,' fe,- a9.':'cc7 aural cot. vi ri,,~. r,,;ni?f r: •'~~ .7.^n~; tir~ .,nr-:~i „ .,,r .,:~U,.,.
<br />consists primarily or" .irri!7atcci haglan Gnu pasrrrcia~d. !'r~»Ianc is both .-~inn,F
<br />irr_';at~d and suFirrigated. It is unlike:u that themraorer 'di,-,s .:ill inpacL =he
<br />=an,,a Fiver A'v F. This is further disc•ssed later fir. t`:is do Dumont.
<br />T:he rs~'lzams Fcri: River valley else meets the reruirernec~ts to :;e classified as ar.
<br />,::~F. There are agr_cuitural ac`ivi;ies ircludlne flood irr.'.^ation ?zacticed on
<br />• the fl cod elai::- T!:' potential fcr hydroiog_'c impacts to tr,e C:'illiams For': Ri~-er
<br />ArIF !s ec!igibie and _ =anther di;r_^ o~
<br />ss__ .;ter ~n the document.
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