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HomeMy WebLinkAboutCOUNCIL - AGENDA ITEM - 08/11/2009 - WINDY GAP FIRMING PROJECT UPDATE DATE: August 11, 2009 STAFF: Brian Janonis WORK SESSION ITEM Kevin Gertig Dennis Bode FORT COLLINS CITY COUNCIL Pre-taped staff presentation: none SUBJECT FOR DISCUSSION Windy Gap Firming Project Update. EXECUTIVE SUMMARY The Windy Gap Firming Project(WGFP)is a regional project to provide water storage capacity for various Northern Front Range water providers that own a portion of the original Windy Gap Project. Although the City of Fort Collins is not a WGFP participant, it receives Windy Gap water from Platte River Power Authority (PRPA) under an agreement that has been in place since 1978. Representatives from Northern Colorado Water Conservancy District, PRPA and the City of Fort Collins will give a presentation about the project and answer any related questions. GENERAL DIRECTION SOUGHT AND SPECIFIC QUESTIONS TO BE ANSWERED Does Council have any comments or questions regarding the project? BACKGROUND The existing Windy Gap Project was completed in 1985 and consists primarily of a small reservoir on the Colorado River near Granby, a large pump station, and a pipeline that delivers water to Lake Granby, which is a key component of the Colorado-Big Thompson Project (C-BT). Currently, Windy Gap Project water is delivered to its users through the C-BT system, including the Adams Tunnel, Carter Lake near Loveland, and Horsetooth Reservoir near Fort Collins. The original Windy Gap Project was estimated to deliver about 48,000 acre-feet annually, but has fallen well below its goal for two primary reasons. First, during dry years, the Windy Gap Project is not able to divert much water because of its very junior water rights. Second, in wet years, there is often limited room to store water because the C-BT system utilizes most or all of the storage capacity for CBT water. As demands for Windy Gap water gradually increased, it became evident that storage capacity was needed to manage water produced by the Windy Gap water rights. Windy Gap Project participants began reviewing options for providing firm annual deliveries in about 1999 after experiencing shortages in both wet and dry years. These types of years illustrated the challenges participants will continue to face without some dedicated storage capacity to even out deliveries. August 11, 2009 -Page 2 The WGFP would essentially complete an existing project, as was contemplated for the original Windy Gap Project. The specific purpose of the WGFP is to provide a firm annual yield of about 30,000 acre-feet of water from the existing Windy Gap Project to the WGFP participants. Under the proposed action, a 90,000 acre-feet reservoir would be constructed at the Chimney Hollow site near Carter Lake. This would allow participants to store water in Chimney Hollow Reservoir without being dependent on storage capacity in the C-BT system. With this facility, participants would be able to firm up their Windy Gap supplies by enabling them to carry over water from wet years to dry years. There are 13 project participants including PRPA, the Cities of Broomfield, Greeley, Longmont, and Loveland, as well as several small towns and water districts. The first phase of the environmental review process began in 2003 by the U.S. Bureau of Reclamation and the draft Environmental Impact Statement was released in 2008. Water delivered from the Windy Gap Project is an important water source for the City of Fort Collins. The City was one of the original participants in the project, but assigned its interest to PRPA prior to the construction of the project. The City and PRPA subsequently entered into an agreement which allows the transfer of Windy Gap water to the City in exchange for other reusable waters provided to PRPA. As a co-owner of PRPA, the City receives electricity that is generated at PRPA's Rawhide Energy Station. ATTACHMENTS 1. Glossary of Terms 2. Map—Northern Colorado Water Conservancy District 3. Map and Table—Windy Gap Firming Project Participants 4. Map—Carter Lake Reservoir and Proposed Chimney Hollow Reservoir 5. PowerPoint Presentation ATTACHMENTI Windy Gap Firming Project Update August 11, 2009 Glossary of Terms Acre-Foot or Acre-Feet (AF) - volume of water equal to about 326,000 gallons; one acre-foot can supply around three single family homes in Fort Collins per year; for storage comparison the maximum volume of Horsetooth Reservoir is about 150,000 acre- feet Carryover- used in reference to storage; it is the ability to save water in storage for use at a later time, most notably in following years Colorado-Big Thompson (C-BT) Project - a Bureau of Reclamation project that brings water from the Colorado River basin to the east side of the continental divide via the Adams Tunnel and the Big Thompson River to several locations including Horsetooth Reservoir; operated by the Northern Colorado Water Conservancy District; Fort Collins Utilities currently owns 18,855 units of the 310,000 total units in the C-BT project Cubic Feet per Second (cfs) - volumetric flow rate equal to one cubic foot flowing every second; for comparison, an average peak flow rate on the Poudre River at the Lincoln Street gage (downtown) is around 1,900 cfs and a median winter-time low flow rate in December at the same location is around 7 cfs DEIS (or EIS) - short for Draft Environmental Impact Statement; a report detailing the findings of the NEPA permitting process; report can be reviewed by public for their comments which are typically addressed in a Final Environment Impact Statement; see also "NEPA" Effluent- refers to water that is released from the City's reclamation facilities (wastewater treatment plants) after first being used by Utilities water customers; usually, effluent must legally be returned to the river system where it is reallocated to downstream users; if the effluent was produced through the use of reusable water,then the effluent does not have to be returned to the river and can be used again multiple times; see also "reusable water" and "reusable effluent" Firm Water Contract - refers to a contract where a certain quantity of water is required to be delivered every year; Platte River Power Authority's obligation,to deliver 4,200 acre-feet of Windy Gap water to the City is a firm water contract Firm Yield - a measure of the ability of a water supply system to consistently meet water demands 1 Firming - refers to process of making water more reliably available to meet demands; usually done through the addition of storage capacity Junior Water Rights -refers to Colorado water law's use of the "prior appropriation" or priority system, which dictates that in times of short supply, earlier water rights decrees (senior rights) will get their water before others (junior rights) can begin to use water, often described as "first in time, first in right"; Windy Gap water is diverted under a junior water right Land Application - refers to a practice by Anheuser-Busch InBev where effluent from the brewery is pumped to fields east of I-25 and applied on lands used to grow crops that can utilize the nutrients found in the effluent; this is an alternative to sending the effluent to the.City's water reclamation facilities for treatment I' NEPA - short for National Environmental Policy Act; federal legislation that established environmental policy for the nation; it provides interdisciplinary framework for federal agencies to prevent environmental damage and contains "action-forcing"procedures to ensure that federal agency decision-makers take environmental factors into account Northern Water or NCWCD - short for Northern Colorado Water Conservancy District (NCWCD); Northern Water operates the Colorado-Big Thompson (C-BT) Project and is involved in several other regional water projects on behalf of their participants, including the Windy Gap Firming Project Platte River Power Authority (PRPA or Platte River) -the entity that generates electricity for its owner communities of Fort Collins, Estes Park, Longmont and Loveland Rawhide Energy Station - a facility owned by Platte River Power Authority and used-to generate electricity for its four owner municipalities; it is located 26 miles north of Fort Collins Reusable Effluent-the effluent produced from the use of reusable water Reusable Water- a legal category of water that does not have to be returned to the river after a single use, but rather can be used multiple times until fully consumed. Reusable sources that produce effluent for Platte River Power Authority under the Reuse Plan include water from the City's Joe Wright Reservoir-Michigan Ditch system and credits from Water Supply and Storage Company's (WSSC) Long Draw Reservoir-Grand River Ditch system water. These sources originate primarily in the North Platte and Colorado River basins 2 Reuse Agreement- refers to an agreement signed in 1978 between the City of Fort Collins, Platte River Power Authority (PRPA) and Water Supply and Storage Company (WSSC); in the Agreement, the City and WSSC commit certain reusable sources to generate reusable effluent for PRPA's use; PRPA commits Windy Gap water that is first used through the City to generate additional effluent for PRPA's use Spill (for Windy Gap) - refers to the situation when Windy Gap water"spills" out of Lake Granby. Lake Granby stores water for both the Colorado-Big Thompson (C-BT) project and for the Windy Gap project. The C-BT project has first priority for storage space in Lake Granby. If Lake Granby is full and contains Windy Gap water, that Windy Gap water is lost and replaced by additional C-BT water. The Windy Gap water is said to have "spilled". Supplemental Water Supply - refers to a supply of water that is in addition to local water supplies. The Colorado-Big Thompson(C-BT) project provides a supplemental water supply to water users on several tributaries of the South Platte River(including the Poudre River). In years when east slope rivers are expected to have low flows due to a lack of snow, more water is allocated from the C-BT project reservoirs to supplement the supplies of these water users. Conversely when the east slope snow pack is plentiful, less water is allocated from the project reservoirs. Three Lakes—refers to the three lakes on the west slope that are used as a part of the C- BT system to store and convey water. These lakes are Lake Granby, Shadow Mountain Reservoir and Grand Lake. Trans-basin water - refers to water supplies that originate in one river basin and is conveyed for use in another basin. Under Colorado water law most trans-basin water is reusable water, a notable exception being C-BT water. Return flows and effluent generated from C-BT use cannot be captured and re-used but must be returned to the river system for reallocation. Water Supply and Storage Company (WSSC) - the irrigation company that owns one of the reusable water sources used in the Reuse Plan. This source is delivered from the Long Draw Reservoir-Grand River Ditch system. To compensate WSSC for use of this source, the City (on PRPA's behalf) is required to annually provide 1,890 acre-feet of C- BT water to WSSC under the Reuse Agreement. Yield or Water Rights Yield -refers to the amount of water that is produced from a water right; the yield of water rights vary from year to year depending on the amount of water available (i.e., low or high river runoff) and the priority of the water right; see also "Firm Yield" and "Junior Water Rights" 3 ATTACHMENT West Slope a`ke"d Legend Collection Northern Colorado Canal C Pump Plant wtnwlra ss^^^ Pi line , C-BT Reservoir System e` w _ m Pipeline/Conduit/Conduit City/Town GRAND �' � � � Tunnel Ci SHADOW MOUNTAIN LAKE Water Conservancy District RESERVOIR , A Rocky � Dam _VP NCWCD Boundaries cu+ey nudpC+ sap ow Mountain O Power Plant — SWSP Pipeline n n National ^ s m Is n WILLOW CREEK Park l/1 /y • • RESERVOIR Co orM o_ Big Thompson Pro* T t N E B R A S K A w"`"'Mo `F' _ ' W YOMING - — — -- T 1 Julesburg Facilities and District Boundaries WNBY j WNXCaV ♦ DAM J5 ` flNV`fllHl �} e`yC LAKE dK Nenh,m Cot...de Wale. Scev.� KMrE GRANBY \ "-ri—e rry _ WAIaaNEWYV•F afA s - — MMauwapc..+a^a' \\ w-. t1e L Ce.:�;n.,n WINDY t Granby GAP _ — RESERVOIR O L O Il n A I� D O 'tA LOGAIJ HORSETOOTH \ mod^ RESERVOIR n o/ iepaas� elk Eon CW�n Rody u Y • JACKS0N Mountain } r ya'" Eli MOkGAN in r.l PM c Loveland Greeley cannnan oLY,ae East Slope "� � , v�r« :' -b••!" a► � a FLATIRON d0. ~ R"jer f� i i DistributionF ESTES PINEWOOD LAM ��a r fey WASH System j Gm�d a�s"Ec MARY'S RESERVOIR LAKE ewawd -pe `p�' a• 1 - SHADOW - .: Igla .aaomN� LAKE ,. © Q .,.. MOUNTAIN (( a N0 Jar a cuapF yl{ - �p[f[EI RESERVOIRS GRAND ..J a LAKE JI `„pr'L� Longmont yPl^ , �0 of HORSETOOTH - WILLOW n `y' i yi 8Y � RESERVOIR g CREEK LAKE �+ S RESERVOIR �GRANBY �pEJ $ 1�1 FanCdim y BOULDER ae BOULDER R e L•lar, I.m WBl .• WINDY GAP s.mmFyp..�» - `��I✓_/` 1 s' cowom; aWr Rocky Fcl ` •�•• • RESERVOIR W"Stxw Fm6 Mountain d0 .. '><, / <w+ \°1O1d'°L♦ ;'°^' C-BT PF'oflle Map National `- 1 ,larded `OtD ` g ( \ d lauya4 - o�«n w..wl. �.e aarr'. el. Park arwus . ■ - NCMfCD Gaeirr d 7 '0 s n,NrxF rca w, PINEWOOD XERDGIIAR195 D a.aaR - • 'Fah.u♦asy a., �.Fx.. ruvWl RESERVOIRFLATIRON • � Broomfield .T.,�.1tp Ewa..,u..l u.«.:r pTy Ews PoFk s�..�� rue, U' vpl^ Ws.mvr w..mµu\ i 1 r.aao - o•, , � FFS1E5��'� ^ RESERVOIR GREEN _ Denver R. c WoQrJ us Nfw4 MOUNTAIN a. G L P f•J ..s.wD....... .............wuvww .... .....A........................... ; . ... ...y........ .................. IAKE,uuEl 1 t RESERVOIR �+.--� _ In A'ol al portd.aao - cw F#♦ : °s ' LAKES • BsElaod pee g Way q r -m - @ s W..1 domes -� IF�� Denver A D l M S ,� - tam Y ,F.Ca N m,om ee"i.' E �` it �..p `"" '^"" C 1 . solmRepwr,Rc reams ,_ a n.: Ra Ly, unr . ax .. C L E A R US Index Map Colorado Index Map v p'a a Oe i gmm! s" '- __ a.+ 1 st ce. , 1 zb.dsem• t C R E E K er. I WA gar^ p IEFFERS ARAPAHOE aT ND � � �♦ � : aR n so Cy e� pa... BOULDER .wnr 1 sanh puTn o E L B E RT wv Map AFva toile _ yUny� prom ec� o K C� PA6. K D0UGLAS o It Is Is m^P�• � xa.awr IAcp+a•r.awl ATTACHMENT 3 WindyGapFirmingProject Participants Storage Windy Gap r " Request Firming Project Participant Boundaries Broomfield 252200 HORSETOOTH N Central Weld CWD 330 RESERVOIR Erie 61000 FLATIRON 7 Evans 11750 RESERVOIR 1 RLUgY � Soutk plait¢ GARTER „ q LAKE Fort Lupton 11050 Greeley 71000 Legend 1 Q PRPA Service area Lafayette 1 , 800 BOULDER 3 2 Broomfield 3 = Erie Little Thompson WD 41850 12 4 = Greeley Longmont 13 , 000 5 Longmont 6111111111111 Louisville Louisville 21700 7 Loveland 8 = Superior Loveland 7000 Denver q _ Central Weld County Water District Metro PRPA 122000 Area 10 � Evans 11 Little Thompson Water District 12 Lafayette Superior 41500 13 Fort Lupton - C - BT Delivery System Middle Park WCD 31000 NCWCD Boundaries Total 907180 Ilk h >< ney Hollow Tour r • f. y S Access Road " IiE"w , r Spillway P 4_ • -- _ SppEi�ll_ing Cwjwiiney IigRow 71 �QtPIPE 4 x 8 E Ilk - 1 `r•. eL [vhfYnnFlr , ��� . LY ' # Inlei�r}utwt Tunnel Holloiv ' • J �' ��� llClEl �} y. Re s >! of l; Res I . � . bounda -ybetween 1 ` La6nver County ' AMOMIL- Ic 4. I I . �., ! } vim.; . - Proposed '� _ ±r: t - ' +V _ :, "' Clrrer.t T •f { t , '.r> ILI 1 9f r + Tir _ .i M1 _ � .. _ I .yam •. �I. oil CStilling Basin Proposed New Inlet Pipe � & Spillway Canal Power Line New Roars to Dam Proposed Dams Current Rawer Line 4 F CBT Canals & Penstocks Chimney Res a 5 &66 Spillway Canal Boundary between CET Reservoirs Inlet"Outlet Tunnel IV Larlmer County c'. Larlmer & NCVdCD 0 0 . 5 1 Miles �= properties 1 1 1 r I 1 1 1 1 I Scale 1 ;.24.000 w I.1U" 4QO7 Windy Gap Firming Project Update City Council Work Session August 11 , 2009 cry of Introductions • Northern Colorado Water Conservancy District — Municipal Subdistrict — Working on behalf of Windy Gap Firming Project (WGFP) Participants • Platte River Power Authority — One of 13 participants in project Overview - City • Potential effects of WGFP to water quality in Horsetooth Reservoir • Importance of reliable Windy Gap water under the Reuse Plan GTy of Overview - Northern Water • History/Background — Colorado-Big Thompson Project (CBT) — Windy Gap Project (WG) — Windy Gap Firming Project (WGFP) • Purpose of Project • Environmental Effects & Mitigation rF`�rt Overview — Platte River (PRPA) • History/Background • Use of Windy Gap Water at Rawhide • Agreements with City and Others IW�f� MM WGFP Effects on Horsetooth Reservoir • DEIS reviewed by Utilities Staff • Small change to inflows into Horsetooth • Water Quality Concerns — Small increase in nutrients — Will be addressed in final EIS • Collaboration with Northern Water on monitoring water quality ,�t�ns Importance to Fort Collins • PRPA and the Reuse Plan — 1978 Agreement — 3 parties — Innovative and cooperative — Allows for efficient use of reusable water — Significant benefits to all 3 parties City of �rt,1t Rawhide Energy Station t 25 Pipeline 3b Wellington Drake Water Reclamation Fort Collins -�� Facility`j Fossil Creek Reservoir C Reusable supplies used • y City City F City of Reusable Water Water (City Supplies t5teom and WSSC Credits) •Reusable effluent delivered to PRPA 9 Comm C Rawhide Energy City Station Reusable Water Water (City Supplies 'System and WSSC Credits) w 1u r PRPA provides Windy Gap water to City Windy Gep (pRFA) 0. Rawhide Energy City StatiAn Reusable Water Wat (City Supplies Syste� , and WSSC Credits) • • 11 City provides Windy . • to i Windy Gap (PRPA) Rawhide Energy City Station rA Fort CcUlns 12 h ABI produces effluent for PRPA Land Ap Windy Gap a,200 A •800 AF . . • - Energy •S,DDO AF City •.....� Water B4O00.8,000 AF 4,200 AF, � •• ystem and Cr d F,�rtrs Land A Windy Gap City has obligations to WSSC • . 4.20DA '�I' •B00 AF •••••5.000 AFa Ci 6.000-8.000 AF ,:0.200 AF; ,able Water iWat Supplies yst WSSC 14 ......�� f� dty of ���tf1 City has obligations to the river Windy . • Energy 4,200 A 800 AF (PRPA) Rawhide 5,000 AF cit ..., SMion 6.000-6,000 AF 4,200 AF; ,able Water Wa Supplies Sy1 6B�AF ► >. WSSC •••55-0� 15 16 Ory of Reuse Plan - Benefits to City • Increases City water supplies by approximately 1 ,700 to 2,300 acre-feet • Windy Gap water is delivered to Horsetooth Reservoir — Provides flexible (year-round) use of supply — Located above water treatment plant �,F,�t Reuse Plan - Environmental Benefits Water is used multiple times. This means: • Very efficient use of trans-basin diversions • Less water is diverted from the Poudre river • Less wastewater effluent is introduced into the river system Citotl Reuse Plan Issues • The Plan works well provided there is Windy Gap water available each year • When Windy Gap is short — There can be water supply shortages for the City — There can be cooling water supply shortages for PRPA, the City's provider of electricity FCirt [tins Shortcomings of Current Windy Gap Supplies • Lack of storage dedicated to Windy Gap supplies — Spills when CBT system is full — Diversions limited by junior water rights • Deliveries available to water providers vary considerably from year to year ,.�rt�ins Northern Colorado Water Conservancy District Northern Water • Original Purpose — Local repayment agency — Allocate water supply — Operate delivery features • Mission — Provide water management, project operations, and conservation services — Deliver— Conserve — Plan — C-BT, Windy Gap, Pipeline Projects, NISP, and Windy Gap Firming Project 2, ti Northern Colorado - „y Wafer Conservancy District Colorodo-Big Thompson Project — — 1937 NAGter 1940's" " Conservancy Act 1950 s y. 1938 Green ''._ " + LMountain Reservoir WM WYn ��.n G. Northern Colorado — Water Conservancy District Colorado-Big Thompson Project -- F.li4n and Dinri I Ba-d.,m I' r: f It 1 G�161M ea } ' Windy Gap Project _ � o Fort Supplemental Collins Water Supply Loveland ' . SupplyEstes Park Greeley Longmont C-BT Return Boul Flows First Use Allotment Contracts Windy Gap Project - New Municipal Water 12 Preserving Agriculture in an Urbanizing Region 25 Windy Gap Firming Project Participants Windy Gap i Firming Project � I Broomfield 25,200 Central Weld CWD 330 Ene 8,000 c Evans __ 1,750 me Greeley 7,000 r.gend Lalayetle 1.800 UtIle Thompson WD 4,850 Lorgmort 130D0 Loudville 2,700 ::Z+ww Loveland 70M ... o o^w ....,..�n.... PRPA 12,000 .tee,..°. Superior 4,50C �cvu°�...w.... Middle Park WCD 3,000 Total 90.180 26 C 13 - 1 • Complete existing project — one or more storage reservoirs were contemplated in original Windy Gap EIS • Make yield of project more reliable — "Firm yield" 27 Deliveries to Windy Gap Firming Participants(ac-ft/year) ■DOIly rles./a WGFP a ..„ V W 1 N Year 28 14 c Deliveries to Windy Gap Firming Participants(ac-ft/year) Note: Spill Years Shown in Red 1 u ry N ... N J f f�l 3s_ "s_ g . : 15e . _ adSii a"_ - ii "s_ g 's_ e: a year 29 Deliveries to Windy Gap Firming Participants(ac-ft/year) =Deliverlesw/o WGFP AddtlDnal Deliverlesw/WGFP --Total DeWerlesw/WGFP w Note: Spill Years Show,i,n Red a o .. Year 30 C 15 Alternative Plan Formulation Study (2003) GOAL: Identify practical alternatives from all possibilities Fatal Flaw 1 Phase I Analysis ' ' ' Analysis Elements & Screening Short List of 121 Element Modeling Phase Ir/ Final 7 1 r & 8 Potentia Analysis Plans ,/ Detailed Plan & Screening Analysis // 31 i w � F n A ?j Ike 32 ti\ �r 16 C r 1 y� ■ Need for project (conservation) ■ Three Lakes Water Quality ■ Colorado River Flows ■ Impacts of Denver Moffat project r. . C Windy Gap Firming Project Participant Demand vs. Supply ukla'W 25JJCCI - ; ISDJW I000W • . ra,a r,.m SJOOII 0 v.ar • All Participants currently have water conservation programs and have reduced per capita consumption by 26%since 1988 • Firm Yield from WGFP needed even with significant conservation 34 C 17 Three-Lakes Water Quality � GaP III cd9 r:ad 35 Previous Mitigation for C-BT Project • Provided Green Mountain Reservoir to replace out-of-priority diversions and 100,000 ac-ft of storage for West Slope use • Provide Minimum Flows below Granby Reservoir: • 20ds-September through April • 40 cfs-August • 75 cfs-May through July • Provide assistance to irrigators on Colorado River near Kremmling All Obligations hove been met for over 50 years 36 18 Previous Mitigation for Windy Gap • Provided$10.2 Million for Wolford Mountain Reservoir • CDOW Minimum Flows: — 90 cfs—below Windy Gap — 135 cfs—below Williams Fork — 150 cfs—below Troublesome Creek • Diversion Limits: — 600 cfs diversion capacity — 90,000 ac-ft per year—maximum — 65,000 ac-ft per year—10-yr avg. 37 V Colorado River Below Windy Gap 38 C 19 Joint Proposal with Denver Water • Provide Mitigation for Direct Effects — Temperature — Water Quality—Nutrient Reductions — Wildlife Impacts • Provide Environmental Enhancements above Mitigation Requirements — Firm Yield for Middle Park WCD — Opportunities for Grand County use of WG water supplies for flow enhancement — Use of District/Subdistrict land for environmental enhancements 39 I J Windy Gap Firming Project f � Phase Timeframe I Draft EIS August 2008 f � .. _ Final EIS November 2009 Design of Facilities 2010 -2011 + s. Construction 2012 to 2015 40 20 i Platte River Background Platte River acquired Windy Gap water in t974 for electric generation. =A Reuse Agreement between Fort Collins, Water Supply and Storage Co. and Platte River was signed in 1978. -The EIS for Windy Gap, finalized in 1981, envisioned future east slope Windy Gap water storage. 41 Platte River Background The Rawhide Energy Station began operations in 1984. Platte River first delivered water to Fort Collins in 1985. •Wet and dry year delivery challenges since i985 prompted Firming Project planning in 1999• -Firming Windy Gap will provide a reliable water supply in all years. 42 C 21 i Firming Windy Gap Will : Guarantee availability of water needed for existing generation Firm contractual water obligations to Fort Collins -Ensure delivery of reusable effluent to Rawhide 43 _ _ P Existing Electric Generation Windy Gap is exchanged to Fort Collins for reusable effluent pumped to Rawhide. -Platte River will rely on Windy Gap firming on average in 3 of every 4 years. -Firming Windy Gap will better ensure delivery every year. 44 22 Deliveries to Windy Gap Firming Participants(ac-R/year) desw/o lillil WGFP =Additional Dellwnesw/WGFP Total DelNenae w/WGFP ..w Note: Spill Years Shown in Red IR a m 0 _ _. gi3 'xg � y � 's "s_ t _ t 'sase � _ s _ 9 _ E : 9i7iA Sli dS R 's "s_ e �, ER Year 45 Firm Water Contracts The Reuse Agreement is the source of reusable effluent for Rawhide. *The Reuse Agreement with Fort Collins and Water Supply and Storage Co. requires delivery to Fort Collins of 4,200 AF of Windy Gap water each year. -Fort Collins and Anheuser-Busch InBev depend on delivery of the 4,2oo AF of Windy Gap under the Reuse Agreement. 46 23 Environmental Benefit Reusable Effluent for Rawhide provides recycling of reusable water first used by Fort Collins. -Once delivered to Rawhide, reusable water is used for cooling and process water. Some process water is recycled to extinction. 47 Q • Nib, wof • Collins 48 2-.