Department Update County of Maui Department of Environmental - PowerPoint PPT Presentation

Department Update County of Maui Department of Environmental Management RECEIVED AT n --30 MEETING ON � 14.1 VilectMtinAr-C- f

Dept. of Environmental Mgmt. Update Energy Optimization Measures • Priority on energy conservation and improved mechanical efficiencies • Focus on development of energy generation opportunities at each facility • Idea that our influent streams are not "wastes", but are instead resources How do we cut costs and monetize resources?

Dept. of Environmental Mgmt. Update Energy _ Optimization 411koCe" eh t ,, 4 4w 4 • Install mechanical equipment upgrades, such as pumps, blowers, etc. with greater efficiencies • Monitor peak electricity load with optimal starts/stops of high load equipment • Develop wastewater process studies to improve treatment efficiencies and reduce electricity costs • Optimize residential refuse collection routes to reduce fuel costs N � p [=1": Energy reduction at the source is ideal. July 30, 2012 � 3 � County of Maui

Dept. of Environmental Mgmt. Update Other In-Progress -0#wEnergy Efforts • Photovoltaic Energy Systems 1111111111111VIP — Lahaina and Kihei WWRF — 1.5 MW — Lanai and Hana Landfills — 3.0 kW • Landfill Gas to Energy System — Central Maui Landfill — 1.6 MW • Wind Energy Systems —Central Maui Landfill — 19.2 kW T1-4 INC . Energy generation will help offset rising rates. July 30, 2012 � 4 � County of Maui

Dept. of Environmental Mgmt. Update Upcoming Energy Efforts • Disposition of green waste/biosolids/FOG Current contract with EKO Compost ends 6/13 Potential opportunity exists to create energy through anaerobic digestion or other technology • Disposition of municipal solid waste Landfilled waste has potential energy value • Energy revenue may reduce General Fund subsidy The future is now for waste conversion.

Dept. of Environmental Mgmt. Update GW/Sludge/FOG Project • RFP will be issued in Sept. 2013 • Anticipated developers are static pile composters, in-vessel composters, and anaerobic digestion energy purveyors • Exploring viability at Kihei WWRF and at including food waste THI\I --144114 11 Food waste represents over 20 percent of MSW.

Dept. of Environmental Mgmt. Update Digestion Flow Stream N ow it's used... r - - 41 4111 Heat Recovery Generator Engine Electricity Biogas � 14 Input Auxiliary Use Liquid Effluent July 30, 2012 � 7 � County of Maui

Dept. of Environmental Mgmt. Update Waste Conversion Project • Request for Qualifications issued on 3/18/12 • 23 respondents with projects ranging from 5- 20 MW Very strong interest in the industry for Maui • Various technologies proposed, including mass burn, gasification, plasma arc, anaerobic digestion, and pyrolysis More developers will propose in the RFP.

Dept. of Environmental Mgmt. Update Waste Conversion Flow Stream Power Generation M SW Receiving to mmi ■ s •ommov Sorting and Recycling Feed Metering M SW Storage Gas Storage Gasification Process 9 � July 30, 2012 � County of Maui

Dept. of Environmental Mgmt. Update CML Waste Stream Problem Materia ls, 13% IIHW, 0.2% Paper, 24.3% Organics, 24.9% Wood, 7 tic, 12.3% Green Waste, 14.5% Metals, 4.7% Durables, 1.8% Inorganics, 6.0%Glass, 3.0% July 30, 2012 � 10 � County of Maui

Dept. of Environmental Mgmt. Update Waste Conversion Project • RFQ structured where the developer finances, plans, designs, builds, owns, maintains and operates • County would lease a parcel of land makai of the Central Maui Landfill for the facility • County would guarantee sending the MSW to the facility for 20 years 0 rt __ :\s ,, The County shoulders minimal risk.

Dept. of Environmental Mgmt. Update Waste Conversion Project • All proposals guarantee environmental benefit Landfilling, methane gas generation, and importation of fossil fuels versus facility emissions • Potential commercial operation in 2015/16 • Landfill tip costs will reduce significantly r - - r 1 - 1 I IN; IN � OR 4 � CML life will extend significantly with project. July 30, 2012 � 12 � County of Maui

Dept. of Environmental Mgmt. Update Waste Conversion Project 6 Current Tipping Fee 1 / I � $71/ton I � 1 0 � 20 � 40 � 80 � 100 � 120 60 � Tipping Fee ($/ton) 13 � July 30, 2012 � County of Maui

Dept. of Environmental Mgmt. Update t Waste Conversion Next Steps jr ,,4;;tAlkNc# • Department is p par the RFP • RFP will be issued in September 2012 • RFP will be due by the end of 2012 • Developer will be selected in January 2013 • Analysis will be complete in January 2013 for discussion prior to the FY 2014 budget Key decisions are necessary in January 2013.

Dept. of Environmental Mgmt. Update Summary • The department's efforts to tackle rising energy costs are multi-faceted Energy conservation/efficiency are ongoing Small/mid scale energy generation projects are in-progress Large scale energy generation projects are imminent TI-1 r � ' ' 7"1111 .11k (7,P [z1 The disposition of waste resources will change.

Dept. of Environmental Mgmt. Update *-41...•• 4:61444 4 Thank you 111Lrk THINK � GREEN