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Scope of Work <br />� Channel stability evaluation: Pfankuch. D.J. 1975. Stre�m reach inventory and chanriel <br />stability evaluation: A watershed management proccdure. U.S. Depai-tin�nt ��f Agriculture. <br />Forest Service. R 1-75-002. <br />% Mobile fraction of riffles: Kappesser�, Gary B. 20p2, A Riit7e Stability Inciea to Evaluate <br />Sedimei�t Loading to Streams. Journal of the Americ��n Vb'ater Resources Association, vol. <br />38, (ssue �, p.1069-1081 <br />� Habitat Quatity Assessment, V"isual [3ased Proceclure, modificd for the Grand <br />County SMP: Modi�fied of EP� Rapid E3ioassessment Protocols for ll�se in Streams and <br />Wadeable Rivees: Habitat flssessment and Physiocherr7icai Parametc:rs (Second Edition, <br />1999j. Available online at httt�:J/tvw�i�.ep�i.�ov�owow/monitorin��°bpiincles.l�tml <br />Fot• the purpose of'Chis scope of'�vork it is assumed that the ten ��riority reaches (totalin� 60 <br />miles) will be rncluded, rec�uiring app�-oximatelv three �veeks for tield reconriaissance. The <br />ehannel stabilit�� evaluation and habitat 3ssessrnents �vill be performc:d once within each <br />reach, in sectic�ns of the river that are 1) physicaily accessible and 2) representative of the <br />project reaeh. "['he 17abitat assessment ����ill be liniited to 1(�0 feet cach side of the banks and <br />moditied to ii�clude tish passage baeriers. The riffle. stabilitti� index evaluation will be <br />conducted once at each ofthe PE�IABSIM sites. <br />T}�e following �utlines the field work p�-ocedw-es. <br />1. CollecC and review existing available information inc(uding maps and aerial photo�raphs, <br />�roiindw�ater reports, wetlands mapping. <br />2. Vl�'orking with the Cotinty staff, develop routii�g for field work, identify preferred access <br />poir7ts and reaches for visual observation <br />3. C'oordinate tivith County on property �wner i3ofitications <br />4• C'ontact other agencies and organizations fr�r- anecdota! information on the priority <br />reaches and to ic�entify <lreas of existing possible degradation that warrants tield <br />observations. Note that this task is (in�iited to otfice time to call agencies and <br />organizations. <br />�. Investigate possibli: aeria( rzconnaissance. <br />6. Perfol-m field recannaissance where access can be obtai��e�i. <br />7. Assemhly data, C�hotographs and tield notes. <br />3. � Adrlitional Assessments: The �vork i�utlined in Tusk 3.2 i.r inclr�c%�l in the Phu,se 3 Sc�o�c of' <br />W��rk currently under c°ontrucl with Grund Coi�nty; Concurrent witll the ettorts noted above, <br />additional work is proposed to cornpir:te the environmenta( flo�� analysis cievelope�d in Phasc ?. <br />This includ�,s the following tasks: <br />3.'.1 Develop environmental flow recoil�mendatio��s t��r Fraser Rivet• F3 (dotivi7strea��� of USGS <br />gage, two sites on Ran�h Creek, and one site on the Colorada River in CR4 dowristream of <br />Wir�dy G€�pj. This requires collection of physic�l habitat data, survcy�ing of cross sections <br />ai�d determination of hydrau(ic data at three separate tlows. In additioi� implement the Nature <br />C`onservancy�s Indicators ot� H�drologic Alter�tion (IHA) using existing long ter•n� USGS <br />gage records. Optin��uin flo�v regimes wi(1 be developed consiclering the resu(Ts of the <br />O Grand Countv Colorado TETRA TECH <br />Stream Management Plan, Phase 3B <br />TETRATECH 2 <br />