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HomeMy WebLinkAbout2017-10-24 Water Advisory Committee Agenda PacketAS AND WATER ADVISORY COMMITTEE AGENDA I. CALL TO ORDER: 4:00 PM, Siskiyou Room, 51 Winburn Way Ashland, OR II. ANNOUNCEMENTS III. APPROVAL OF MINUTES: September 26, 2017 IV. PUBLIC FORUM V. WATER MASTER PLAN — CONSERVATION MODEL A. Presentation and run through of conservation model VI. AWAC CHARGE A. Discuss current charge of group VII. NOVEMBER/DECEMBER MEETING DATES A. Recommend postponing next meeting until January due to holidays VIII. ADJOURNMENT: 6:00 PM CITY OF ASHLAND C.�.� ASHLAND WATER ADVISORY COMMITTEE September 26t", 2017 These minutes are pending approval by this Committee CALL TO ORDER John Williams called the meeting to order at 4:03 PM Committee Members Present: Darrell Boldt, Joe Graf, Rich Miller, Pat Acklin, Alex Amarotico, Kate Jackson, John Williams (chair), Don Morris, Michael Morris (Council liaison) Committee Members Absent: Donna Rhee Staff present: Tami De Mille -Campos, Scott Fleury, Steve Walker, Michael Morrison, Greg Hunter, Kevin Caldwell, Julie Smitherman, Paula Brown Staff absent: None Consultants: Jeff Ballard (RH2) ANNOUNCEMENTS Paula Brown gave background on herself and the committee then gave around the room introductions. APPROVAL OF MINUTES June 27, 2017 Boldt/Graf m/s to approve minutes. Approved unanimously. PUBLIC FORUM None NEW 2.5 MGD WATER TREATMENT PLANTICROWSON II RESERVOIR PROJECT UPDATE Brown shared with the committee that she has been back as Public Works Director for three weeks and one of the things she asked about when she became Director was where are we and what has been happening. In the past three weeks a few things have happened which brings her to recommend taking a pause and allow time to finish the siting study which should be finalized before the next meeting. Keller and Associates lost an intricate member of the group and because of this staff felt it was appropriate to part ways with Keller and look at what phase II brings. With phase II we need to look closer at what problem the committee is looking to solve and why we would want to build a new plant while continuing to operate the old plant. She is a bit perplexed as to why we would operate two plants for a town of our size. She is proposing a phase II for the committee which would be a much deeper review and would include hiring a new consultant to evaluate our existing plant from the standpoint of what lifespan does that plant have left and what risks currently exist and look at what is fiscally responsible. Brown said a lot has changed since the committee re-formed, one of the biggest things is we now have TAP (Talent Ashland Phoenix Intertie). Brown would like the committee to look at what the policy is for using TAP and what is the realistic expectation for TAP. She wonders how we should best use it, if we are "paying for it' maybe we should be using it more than we are. She feels there should be a more detailed analysis and doesn't feel we have the necessary information right now to move forward with a new plant. Brown questions if the old plant won't last longer than ten years, should we decide to scrap it and just build a new one or if it turns out that the existing plant will last twenty years, then it may be a good deal to keep the old plant and not build a new plant. If the old plant will last between ten and twenty years for a reasonable price then that is a debate we may need to have. She suggests that we spend roughly fifty to seventy five thousand to do a detailed study of a fifty year time period and what the costs of retrofitting the old plant would be versus building a new plant. This study could take three to six months with a new consultant. She is going to put together an RFP (request for proposal) before the next meeting. commented [Tci]: This is still being worked on and pending a cost analysis. There was discussion amongst the committee regarding what has transpired since the committee began its work and Brown said she had a pretty good handle on what this committee has been looking at and in her discussions with support staff she has looked at risk versus affordability and she doesn't feel comfortable moving forward without taking a deeper look at what is best for the community. Acklin shared when they came up with the plan they didn't think there was a good enough solution to the flooding, landscape, seismic issue and they felt like that was a precarious place for the sole treatment plant to be, the thinking was that we have to find another location at some point because it is susceptible. She agreed that several things have changed since they made their original recommendations, including TAP. She also feels if we do not know more about what citizens are willing to conserve we will know a lot more in the future as a result of the computer modeling which is currently underway. While this committee has discussed TAP, they have been circular discussions and the committee hasn't necessarily arrived at a conclusion for how often we use it. She feels it would be foolish to not stop and look more carefully. Graf shared he thought the vision of this committee always was that there would be one plant (the new plant) and the recommendation that came out was a compromise because there was a lot of difficulty amongst the committee in regards to TAP and other things. They landed on 2.5mgd largely because that was the average winter consumption. He doesn't think anyone had any desire in operating two plants long term. Williams shared that for him the idea of a new treatment plant came out of an economic analysis and when looking at the cost of continuing to use the old treatment plant, given the information that was available at that time, it was so close to the cost of building a new treatment plant with the additional advantages of a new treatment plant that was a no brainer for him and that is why he supported that recommendation. Brown said she would love to have a new 7.5mgd treatment plant that does everything we want it to but she would be remiss in not taking these options and the various cost options to City Council. Jackson shared as a continuing member of this committee she feels we need to understand how the decision was made, she can't recall how they decided, other than what Graf eluded to which was there was a lot of disagreement. She's wondering how the committee should reopen the discussion without revisiting all of the old arguments. Councilor Morris recalled at the Council level the discussion was all about the redundancy of running two plants. He shared that he never saw enough of the technical side. His personal opinion is he has always felt that Ashland's problem isn't the impoundment of treated water but it is more the impoundment of untreated water (reservoir) but he never saw real numbers on that at the council level. Boldt shared that when the committee started this process there were two key factors they were keeping in mind were reliability and redundancy and based on the information they spent a lot of time looking at different options for conservation and with climate change coming along we know that is going to be even more critical. The information they got on the existing plant all weighed into the fact that it has a limited life span that won't be easily extended which then made a lot more sense to phasing the old one out and building a new plant. The redundancy part of the equation was TAP and now that TAP is in place this changes the equation. He is never opposed to going back and revisiting something just to verify that we are going in the right direction. He agrees with Brown's recommendation to step back and make sure the right decision is being made and it is justifiable. Brown estimated this cost analysis would probably take three to six months and cost maybe fifty to seventy-five thousand. Ballard said a seismic evaluation creates a whole different level of evaluation. Williams said there was a lot of talk about how much money was going to need to be spent on keeping the old plant going and it was adding up and they just want to make sure that even if it does have some lifespan left that it makes financial sense. Brown doesn't believe we have spent bad money at the existing plant and this plant has served the city well through three floods in recent history, there is capacity that may be untapped and there are risk issues that haven't been fully addressed but we owe it to the community to spend the money wisely. Graf said he expected this committee would have to wrestle with the notion of a 2.5mgd plant and it sounds like this is the data staff feels they need in order to make a recommendation and he is fully supportive of moving ahead with this study. He also indicated he has always thought operating two plants is a bad idea. Acklin said as she remembers the process, Pieter Smeenk was instrumental in helping us get what we needed out of Carollo. Brown said the information we have from Carollo and Keller is great information and not something you throw out but she isn't sure if it went deep enough, but we can go deeper. Brown will draft the phase II RFP and hopefully get it out for publishing before the next committee meeting. If there are things that she missed we will bring it back and get those added. She will give an update to the City Administrator and then the plan would be to take it to the November 6, 2017 Council Study Session for their input. The committee voiced unanimous agreement for Brown to draft the phase II RFP. WATER MASTER PLAN UPDATE Jeff Ballard, Rh2 Engineering passed around a handout (see attached) and Brown passed around the original committee charter (see attached). Ballard shared they have all the information they need and the modeling is going through the final steps of calibration and then they will move on to the system evaluation. They are in the process of working with the conservation consultant and should be able to bring that information to the October meeting. He is continuing to build the Water Master Plan Update document itself, but the conservation element will be a big part of it. Thus far there haven't been many surprises, there could be some zone change recommendations made but other than that the system is fairly simplistic with the water all flowing downhill. Ballard presented the Level of Service Goal recommendations (see attached), those shown in red are his recommendations. Walker shared that cross -connection (backflow) is really important to make sure we don't have a user who infects the entire supply. Currently we satisfy the Oregon Health Authority regulations requirement which is that we have a database that tracks the testing of the backflow devices that we know of in town. One of the areas that this community hasn't gotten to is going around property by property and identifying hazards on that property and ensuring the homeowner has the proper level of protection installed. That is a huge task and politically it is a hot topic if not handled properly, there is a lot of public outreach to be done to ensure it is handled properly. He said that is a pretty simplistic explanation of it but he hopes this is something we can take a look at in the future. Brown said in addition to the water plant having cross connections, the waste water plant also has cross connection issues. She thinks we will at some point be asking Council to update the ordinances to give the City permission to monitor, check and report on every residential backflow situation, along with the public outreach component which the water conservation division has already been trying to do when they are out with property owners doing irrigation audits. Acklin asked what the potential is to have power generated with all of our gravity flow. Ballard answered that we started to go down that path as part of the water master plan update, he isn't against evaluating it but where they landed is that within the existing system we have limited locations where there is steady flow which is needed to generate good power. They City's system operates on pressure reducing valves (PRV's) so it allows water to come through as there is demand, you need a large volume of water at a consistent flow rate. There are places where you could generate power but it comes down to cost effectiveness. Graf said with the Climate Energy Action Plan (CEAP) we are going to desperately being looking for ways to save energy and this may come up again because we may come up against a limit as to where we are going to save. Brown said she would like to explore that but that would be a future phase to the plan. Williams said we spent a lot of time talking about a fifty year climate prediction study for our watershed and staff may want to research and see if they did a more recent study during the CEAP process. Ballard said they are using updated climate data for the supply model and so we will want to make sure to have that conversation at the end of next month to make sure we are consistent with what Williams is talking about. Brown asked the committee to review the original committee charter (year 2010 estimate) handout between now and the next meeting and come back to the next meeting with any questions or comments. Meeting adjourned at 5:40 pm Respectfully submitted, Tami De Mille -Campos Public Works Administrative Supervisor ASHLAND WATER REUSE AND CONSERVATION STUDY WATER MASTER PLAN ADVISORY COMMITTEE - CHARTER - PURPOSE: Ashland is committed to undertaking an integrated Water Reuse and Conservation Study and Water Master Plan Water Program) to address long-term grater supply including luding climate change issues, security and redundancy, watershed health, conservation and reuse, and stream health. The Water Pr gran will address Ashland's multiple grater sources & multiple options for combining them to meet demands while considering climate change, improving reliability of supply and increasing environmental stewardship. The -purpose of the Ashland Water Advisory Committee i'tt is to provide a link with the community and to involve impacted persons and interest groups with Ashland's Neater Supply Planning Program and Utility. The -Advisory Committee will provide critical local input to the planning and policies that will guide the Water Supply Utility t defining goals, objectives and rate structure. DUTIES: Identify and prioritize community issues, goals, and concerns related to the- Water Master Plan including grater conservation, grater recycling, public health protection, grater supply reliability, and water quality. 2. Work with City staff, the Technical Review w -Committee, and the consultant -team t adopt level of se-rwce-goals for the Neater Master Plan. 3. Review planning alternatives--- and planning recommendations and comment on their ability to satisfy the established level of service goals- and address- other identifiedcomm-unity g als, issues, and concerns. ._ . Assist in gaining community input into the planning process- and educating the community about grater planning issu s. AUTHORITY-, The Ashland Water Advisory Committee I AC is to be established in accordance with -Ashland's committee policies and will be in existence throughout development and implementation of -the program. The purpose- of this Committee is to serge as an advisory group to the City and its water staff. As such, its authority will be limited d t collecting information, conducting analyses and making recommendations. All position statements r recommendations f the Committee mitt will be trans itt d by its Chairman t the City Council. ORGANIZATION: The AEI AC will be- chaired by a person [appointed by the Mayoror] l t d- by fellow Task Force members. The Chairperson will establish the ruffs of order and conduct all meetings. Each member will have one vote except for the Chairperson who will serge as a non -voting member except in the case of ties. City staff will provide direct support to the Committee and its Chairperson. A Technical Review Committee consisting of the Director of the Talent Irrigation District, the Ashland Water Department Project Manager, Treatment Plant Operator, Distribution System Operator and Water r Conservation Officer will provide technical support, input and oversight to the A 11AC. MEETINGS: It is anticipated that the Committee will meet approximately once every two months over the next 16 months. The day of creek and time for meetings will be established by the Task Force at its initial meeting. The actual date of each meeting will set by the Chairperson. As the program takes shape additional meetings or subcommittee meetings may -be requested by the Chairperson. An initial schedule for committee meetings, with suggested agendas is attached. The agenda for each meeting will be established by the Chairperson and distributed to each member prig to the meeting. Suggestions for agenda items may be made to the Chairperson by any member. A majority of the total n .rnb r of Task Force members may amend the agenda at any meeting. Position -statements regarding issue papers must be approved by a -majority of the total -numb r of Committee members. The Chairperson wil-I document issues raised -by the Committee as well as a -ray recom- mendations from the Comm ttee .an -transmit them to the City. Meeting summaries dill be kept by Pr ject- taff and transmitted with the agenda and supporting materials ria-ls to each member prior to the subsequent meeting. All summaries or other written comn-runications from the Committee may. be amended with approval of a majority of the total number of Committee members, M embers of the Com m ittee will_ not be compensated for their s rvloes or the expense of attending meetings. REPRESENTATION: ESE TATION: (suaaested City Council Member; Neig hbo-rhood Community Group ; School District Committee; Ashland Downtown Association; Chamber of Commerce, Home Builders Association; Ashland os ita 1, Ashland Fire Department; ent; WISE Project, Ashland Coalition, utility System Development Charges S C Committee, League of Women ea oters, Environmental Groups , others. Suggested Committee size of 9. PROPOSED MEE-TING SCHE LEITOPI :(suggested) February — Kick --off, Intro to Program and background, Intro to Level of Service Goads • April — Finalize Level of Service Goads • .dune — Water Rights, Environmental Impacts, Climate Charge • August= Supply Alternatives • October -Alternatives Analysis and Selection Workshop • December — Draft Water Reuse and Cnsrvartion Study • February — [raft Plaster Plan and SC-tes • April — Final Meeting �PROPOSEID ASSOCIATED MEETINGS: (suggest d • March — Public Dearing (-Program Intro and Public Listening Session) • May — Deport to City Council • September — Public Hearing (Program Update and Listening Session) • I em er— Report to City Council • Aril --Final Report to City Council RH2 ENGINEERING, INC. wvvw tZli"'OP11 'fladbox @ 1'2.111� or'111 80(1721'180521 WASHINGTON LOCATIONS IIII 01 M,ii%114 OFFICII�� 291`' rive S[&.ftir� 21I 10 W,111\ 9802,"II I111 G H Jki 10 WHiLik II IIII 1A 1111 OREGON LOCATIONS II )ORTI A, 14 615100 SW Mac;ac arn W 1� September 26, 2017 Ashland Water Advisory Committee Meeting Talking Points Level of Service (LOS) Goals Discussion 2.3 WCRS LEVEL OF SERVICE GOAL Table 2.1 Selected LOS Goals Goal Area Goal Water System Have sufficient supply to meet projected demands that have Capacity reduced based on 5 percent additional conservation base year 2009. However, City will have a goal of achieving 15 percent conservation. Water System Community will accept curtailments of 45 percent during a severe Reliability drought. The City will prioritize source water available during drought conditions. Water System Implement redundant supply project to restore fire protection and Redundancy supply for indoor water use shortly after a treatment plant outage. Supply ADD with redundant supply. Regulatory Meet or exceed all current and anticipated regulatory requirements Requirements including cross connection program improvements. 09/26/17 1:35 PM Z:\BOTHELL\DATA\COA\1016-096 WMP 2016\MEETING DOCUMENTS\TALKING POINTS AWAC 5.23.17.DOCX all 2.4.1 DISTRIBUTION SYSTEM PIPING LOC Goals AWAC September 26, 2017 Page 2 Table 2.2 Distribution System Criteria Parameter Criterion Minimum Service Pressure under Peak Hour Demand 30 psi Minimum Service Pressure under Peak Day Demand plus Fire Flow 20 psi High Pressure Limits 120 psi Pipe Velocity Maximums • During normal operation 5 fps • During emergency conditions 8 fp s All new mains providing fire flow will be sized to provide the required fire flow at a minimum residual pressure of 20 psi. • Residential lines shall be looped 8 -inch min • Commercial, business park, industrial and school areas shall be looped 12 — inch min Isolation valves will be installed in the lines to allow individual pipelines to be 1000 ft max shut down for repair or installation of water appurtenances. A minimum of three valves ® be provided per cross and two valves per tee. Individual pressure reducing valves must be installed in all customer service Pressure > 80 psi lines in the City. Fire Hydrant Spacing • Fire hydrants serving detached ® or duplex dwellings Travel path < 300' • Fire hydrants not serving detached single-family or duplex dwellings 300' Spacing 09/26/17 1:35 PM Z:\BOTHELL\DATA\COA\1016-096 WIVIP 2016WEETING DOCUMENT&TALKING POINTS AWAC 5.23-17.DOCX all 2.4.2 PUMP STATIONS LOC Goals AWAC September 26, 2017 Page 3 Table 2.3 Pump Station Evaluation Criteria Parameter Criterion Supply Maximum Day Demand to service zone assuming Capacity for service levels with storage the single largest capacity pump is off line (i.e., firm facilities capacity) Capacity for service levels with no storage Supply Peak Hour Demand and fire flow assuming the facilities single largest capacity pump is off line (i.e., firm capacity). Power Supply New pump stations require a main power source and an emergency source. Secondary power source for new pumps stations to be sized to meet full pump station demands. City will plan and design facilities to optimize energy efficiency 09/26/17 1:35 PM Z:\BOTHELL\DATA\COA\1016-096 WMP 2016\MEETING DOCUMENTS\TALKING POINTS AWAC 5.23.17.DOCX all 2.4.3 PUMP STATIONS LOC Goals AWAC September 26, 2017 Page 4 Table 2.4 Storage Evaluation Criteria Parameter Criterion 0.25 x Maximum Day Demand of the area served by each Operational Storage reservoir Evaluate actual operating storage volume (based on pump station start/stop levels) Equalization Storage ES = (PHD — Qs)(l 50 minutes), but in no case less than zero Where: ES=Equalization Storage in Gallons PHD = Peak Hour Demand, in gpm Qs = Sum of all installed and active sources, except emergency supply, in gpm Fire Storage Provide volume for single most severe required fire flow and duration for each reservoir service area. System -wide, provide volume for two largest fires. Emergency Storage 0.5 x Maximum Day Demand of the area served by each reservoir Nesting. The City will allow nesting of fire flow and emergency storage to maximize the use of the exiting storage facilities throughout the system. Emergency Storage. With the establishment of redundant supplies, does the City still feel that ADD is sufficient emergency storage.? 09/26/17 1:35 PIVI Z:\BOTHELL\DATA\COA\1016-096 WIVIP 2016\MEETING DOCUMENTS\TALKING POINTS AWAC 5.23-17.DOCX i f i i . . . . .. . . ..... .. . . . . . . .. . . . . . . .. . . . . . . .. . . ..... .. . . . . . . .. . . . . . . .. . . . . . . .. . . i r j i O Cp LIO .L N w Q) E L Qj Q +j Q) Q) 0 O DC 4-, (2) > cn o L40 to 4-1 O a-J v �_ O — •Ln ( �' CL c6 s v, O ul O O cn 4-, / 16 c O E (6 (/i (/) O N LL a--J a--+ E O Q (/) > c6 U L E � cn _ E� 0 s i }, CO W O N p E +� J O O O � s }' • � cn L U cn p c6 � CCU: C •� O O �-' .--+ c6 O f 6 aA E +� E Q) 2 N >. 0 QU cn � > w U L �, > L O O Q �"' O O O -0 E N 0 Q, p J L o � � N M -0 � -P �, � L Op� a--' p O -0 b.0 •� cr w v Q J Q� N Q� L U c6 c�= c6 O '� •� w w M N ('6 p "� Q) (6 N UQ)' — O � • O a) W ro ro OUa1 a DC �jN++s O N L N L '� a� ca O = 0 E c6 L O cn ca oC • = U 0) ca O O�_0_0> L 0) oC oC O 2 3 Ln •— 0 E cn _ U = U ca 3 L 0 Q U On= cn > > N L a w DC J ca cn cn C� — rl N m 00 � L) , to , I� , 00 , Ol O rl rl rl N rl M rl rl Lli rl �o rl I� rl 00 rl Ql rl O N rl N N N M N � N Ll) N to N I� N 00 N Ql N O m rl rn N rn �� owj cn O L 0- co Ln N O cn cn C � V N O � C a p rl N 0 0 W lD N� Ol N N N Ol Ln I� N 00 o u c o m � Ip 3 � o c d 0 N 7 0 7 O� � ,ri IN O � .-i Il1 0 N a n ,e, O OM� 0 � ,� ONyam. a te, V C O Q 3 V1 0,��ooao 00 N o rl IA i l0 .N e � N V1 .-i ^ � '~ *ONON ul ,ma00 o a` V L 3 c C E O m 7 V � 00 O .ti M 00 ' � O M '� rl rj � � M � rl fY1 N �y .ti u1ON ^ "No V1 lD a a C � N N u a � � tD rn N Ln Ol m a 0 0 0 �� owj V) o?S Ln cu E 0 0 Ln Ln 0 N Uv s s O +_+ bA O _0 -IMJ O }' }' }' v v -a _0 _0 E E E I✓ C +-+ E c :3 O O O E s E s bn W w tiA N-0 Ul-0 Q Q Q ro o O c O c O v v a� o -0 Ln -0m -0 Q +i a)+� N U Q U cobA N U U U D i V p to " boo ca � v crs � v ca E crs E ca E ca aJ O 4— by O w 0 \ bap N w � c6 v .� c6 N f6 v bA can N bA N dJ bA 0 bA o z W w I 6170 Z L170 Z Si70 Z EV0 Z Zi7OZ 6EOZ LEN SEOZ EEOZ ZEOZ 6ZOZ LZOZ SZOZ EZOZ TZOZ 6ZOZ LZOZ SZOZ EZOZ ZZOZ 60O Z L00 Z SON O O O O O O O o 0 0 o O O O O � N O 00 lD � N r-I r-I r-I O cu a� V c6 E a� 0 a� O Ln Ln r') Projected Water Demand Year ,,NNES,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Historical Average Demand (mg/year) Cost Effectiveness Demand Projection Average Demand without Plumbing Code (mg/year) Cost Effectiveness Demand Projection Average Demand with Plumbing Code (mg/year) Program A 10% Average Demand with Plumbing Code (mg/year) Program B 15% Average Demand with Plumbing Code (mg/year) , Program C 23% Average Demand with Plumbing Code (mg/year) 2005 11220 2006 1,251 2007 11218 2008 1,196 2009 11073 2010 950 2011 943 2012 969 2013 1,059 2014 968 2015 990 2016 11000 2017 11080 11080 11070 11070 11070 2018 11085 11083 11063 11060 11059 2019 11091 11085 11062 11055 11055 2020 11096 11088 11059 11042 11026 2021 11102 11091 11057 11032 11001 2022 1,107 11093 11055 11023 976 2023 11113 11096 11053 11014 952 2024 1,118 11099 11051 11005 929 2025 1,124 11102 11050 11003 927 2026 11130 11105 11048 11001 925 2027 11135 11108 11048 11000 924 2028 11141 11111 11048 11000 924 2029 11147 11114 11048 11000 924 2030 1,152 11118 11051 11002 926 2031 1,158 11121 11053 11004 928 2032 1,164 1,124 11056 11007 931 2033 119170 1,127 11059 11009 933 2034 119176 11131 11062 11012 936 2035 11181 11134 11065 11015 938 2036 11183 11133 11064 11014 937 2037 11184 11132 11063 11012 936 2038 1,185 11132 11062 11011 935 2039 1,186 11131 11061 11010 933 2040 1,187 11130 11060 11009 933 2041 1,189 1,130 11059 11008 932 2042 11190 11129 11058 11007 931 2043 11191 11128 11057 11006 930 2044 11192 11128 11056 11005 929 2045 11193 11127 11056 11004 928 2046 11195 11126 11055 11003 927 2047 1,196 11126 11054 11002 927 2048 1,197 11125 11053 11001 926 2049 1,198 1,125 11053 11001 925 2050 119199 1,124 11052 11000 924 DSS Model: Demand Table Preliminary Draft October 17, 2017