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Ridgway Reservoir Micro-Hydro Project Loan Feasibility <br />Page 33 of 42 <br />• Special tools required foz installation a� mxint�enanee <br />• Installation and ccyntuussion supervision <br />Facility conshvction cauld begin in early ZQi3, and is expecLed to take 14 t+� 18 months_ Con.shvct�on <br />$����e'$ �� � $�� $Q � �(i tllifllfl117P ]jltiCll�e �16LL Q�-�� ii$E�au �i14n.5_ ll i$ <br />eapected that th�e would be substantial c�nst�ucticxi c�ring tbe a+�nte� (f�or example, mstalEatio� of the <br />tw� n�r b�fuma�ians in the riuer autlet pipes}- Special tec�uquess s�ach as heat�ed eonc�te tents, aud so <br />fos�, wau�d be use<i w}�n n�ecessary to p�+e;�mt isnpacts tn the a�� co�ctio� ar the Ganstruciion <br />sche�le that c�ild aiise fi�nm severe a*anter c�ofldi#i+�s_ <br />Traus�nis�ion constnuti� w�utd also stsit in earl}* 2013 _ At this Eim+e, it is anticipeted that a separate <br />cantractar woul�d be emplayed to do this nork. T�is �antractor �ld be required ta� dem�onstra�e <br />st�cc�ssful eacperie�e wozking with SMPA a8d °Tr%State on siun�az' pmjecks_ It is aisa possible that Tn- <br />�tate may be engaged diaectly to canstnlct #he s�tiixi. �d S�►eiPA to re-string th� distri�3ion cart�d�uif_ <br />The I?istrict is �,.so canteu�lating exectrting the c usim� a Des�ign-Build grocess. Thene are <br />san�e whu $dvocate tlrat this meti�od of �c�trac?t�g red�es the time tn tnnlci a project. Howec�er, cu�rent <br />tc+e�.s see�n t�o dispube #tus claim �n the abse�ce of a tia�e adc�anta�e, the pri�ripal advanta�es ane to bav�e <br />a single�oint of acco�mtability asxi to re�duc� �fi+�mt e.apenses riu the Distnct_ The priB�ary ciisadv�tage <br />�s $3at DB conlracts will resutE in higt�er bid p�ices becaus�e i�e c�ontracia� is forred ta sssume the risk of <br />��n iufcxnrati+on that is �,pi+c�lly availabie in a�ia►ll, o� ` .. ,' design. There are se�verai <br />t�t�estians the Distnct �ust answer i�esnali}* before it can tnake a final decisiaa It i� expect�d that this <br />�decisitm w�ould be during the 4'� quarter af 201 �.- <br />Energs production <br />T�e a� annual �ergy o� fi�m the p�+Opos+ed i�jj� is Z�_6 gigawatt-haAUS_ This estima�e is <br />hase�d on � fol�ovuing assumpticros: <br />1_ Two dissimilar Fraacis t►u�ines, ane v� a maa da� of 370 cfs and the c>ffier wifh a max tlow of <br />240 c£s (4_9 MW an�d 2_13�iR±}. Tfie estimated P'e�e caP�tY P�'°� would be 7_7 l�+lW_ <br />2_ Peaic turbxne efficienc� af 93�_ <br />3_ Av�era�e �eratar efficie�c�y of 96Yo <br />4_ Fanced �rtage rate of 1.5% <br />S_ A`*erag�e tran.sform�er losses of �% <br />G. HisEa�ical outtet flows and resers*oir elevatia�,s frr�m T�i�-�'o�atjr (1987 io 2409) <br />7_ No fis�eries b}�ss <br />8. � tailwa�er ele�atiou of 6644 fe� <br />9. Headloss af 23 f�t at maxinu�m station capacit�r of SUO efs (assume� 10'i6 of maximum gross <br />he�) <br />Preiiminsrs� eost estimete <br />The cost of the faciirty h�s be+en esiiu�ated to be S 1�,2+DO,UO+D, uxhich is approximately S2,6U0 Per �ilawatt <br />of in.st�lleti eapacity, if yo�x include all Projeci de�v��elcrp�effi costs (canslntrti�, �—Q *+���,� C'M, a�1 <br />ad�nimstratian), or �2,?00 per kilowatt of installed r�r if }�a i�lude a�ly tt�e estimated cons�uctia� <br />cosi�s (incl�ding cc�nt�ngencY)_ Tlius we helie��e this �bo 6�e ffi u�decatc�r of a financia}1yr beneficial project- <br />The cost estinnate is a�sso �l_ 1 mi3lio� � than estiu�aited fa� i�e Lea.se of P�wer Frivilege_ That <br />estimate w�s b�ased on 2009 data_ i'}�e iix�ea�e in c�st c�n be at�cz"b�ed to_ <br />a- A sli�httY iaz'ge Paweshouse f°°i�n� <br />Ridgway Hydro Feasibility S�xnrnary Pa�e 5 <br />