The URL can be used to link to this page

Home My WebLink AboutSupplemental Attachments - 3/19/20183/19/2018 WATERLOO CITY COUNCIL WORK SESSION MARCH 19T", 2018 SHARED SERVICES COMMIT 1 EE SHARED SERVICES COMMITTEE • Initiated by Mayor Hart and Supervisor Magsamen • Facilitated by INRCOG • Started in Spring of 2016 1 3/19/2018 SHARED SERVICES COMMITTEE • Work is just getting started! • Areas of opportunity for sharing • Human Resources Subcommittee • Wastewater Subcommittee • Other? AREAWIDE WASTEWATER TREATMENT FACILITY • Wastewater treatment facility needs are a priority • Formed a Subcommittee of the Shared Services Committee for WWT • First meeting regarding this topic was held in September 2016 • Included Cities of Waterloo, Cedar Falls, Evansdale, Hudson, Elk Run Heights, and Raymond • Discussed existing systems and future needs • Researched feasibility of regional systems • Discovered an existing 1973 study 3 CONV74YANCE OF WASTEWATER TO ONE CENTRAL LOCATliON FOR TREATMENT 131,6L4 /MA Waterloo Water Pollution Control Facility 1 3/19/2018 EXISTING WATER POLLUTION CONTROL FACIIIITIES °CATIONS tan. FALLS WiT61.00 fUttL•414 DOME 3/19/2018 BENEFITS • Determines the viability of a regional system today • Offers a potential long-term solution • Takes a regional approach to meeting needs • Eases capacity concerns • Intended to address regulatory compliance requirements • Future costs are shared • Environmental benefits QUESTIONS? Next Steps • Contract establishment for the update • Development of the update • Data collection • Meetings • Written report • Presentations • Local Governments • Iowa Department of Natural Resources 7 ATTACHMENT A Scope of Services AC' coI"/IARevt' e®.vrefl-c- Project Description This project pertains to regionalization of wastewater feasibility review for the metropolitan area of Black Hawk County. INRCOG and the surrounding communities would like to have a feasibility review of the possibility for wastewater regionalization within the Black Hawk County metro area. In the early 1970s, a study was performed and a document was created called the Areawide Comprehensive Sewer Study for the Metropolitan Area of Black Hawk County, Iowa. Many of the concepts and approaches contained in that study are still valid today. For the purpose of this review, this project would be an update of the feasibility aspects of the previous study and that document would be used as a guide and reference. Over the next decade, both Waterloo and Cedar Falls may be required to complete major upgrades to their wastewater treatment facilities to comply with the future nutrient discharge limitations proposed by Iowa Department of Natural Resources. With the costs of these upgrades, there may be some long-term economic benefit to utilize one wastewater treatment facility for both communities instead of upgrading and maintaining two separate facilities. Along with this, some of the other surrounding communities may be able to benefit by abandoning their existing treatment facilities and combining with this one facility: The other surrounding communities reviewed include Elk Run Heights, Evansdale, Hudson and Raymond. The feasibility review would look at the general infrastructure aspects that would be required to bring wastewater from each community to a common location for treatment and discharge. For this review, the Waterloo WPCF would be the site that wastewater would be conveyed to from Cedar Falls and the other participating communities. Requirements and costs of infrastructure to allow regionalization will be updated and viewed by current standards and future projections within this review. Scope of Services The Scope of Services will encompass and include detailed work, services, materials, equipment, personnel and supplies necessary to provide the feasibility review as described herein. The Scope of Services is further defined as follows: Task 1 - Updated Population Projections (20 -year) for Each Community. Compile existing available population projection data from each participating community. A 20 -year time horizon will be used for the population projection. Task 2 - Review Current and Future Land Use. Review available land -use data provided from participating communities for current and future conditions. Task 3 - Review NPDES Permits for Permitted Flows and Loadings. Review each community's current wastewater NPDES permit for permitted flows and loadings. Task 4 - Existing Flows and Loadings. Review existing flow and loading data provided by each participating community. Task 5 - Projected Flows and Loadings (20 -Year). Review future flow and loading data provided by participating communities. Provide conceptual -level flow and loading projections (20 -year) based on the information obtained and compiled. Task 6 - Required Infrastructure to Convey to Waterloo WPCF. Review the required infrastructure needed to convey wastewater from each community to the Waterloo WPCF. [DRAFT RESOLUTION # A RESOLUTION OF THE CITY COUNCIL OF WATERLOO, IOWA, AUTHORIZING THE MAYOR TO SIGN A MEMORANDUM OF UNDERSTANDING WITH THE IOWA NORTHLAND REGIONAL COUNCIL OF GOVERNMENTS FOR UPDATING THE 1973 AREAWIDE SANITARY SEWER STUDY (STUDY). WHEREAS, the City of Waterloo (City) is a member in good standing with the Iowa Northland Regional Council of Governments (INRCOG), and WHEREAS, the City has passed a corresponding Memorandum of Understanding with INRCOG; is a member of INRCOG; and agrees to the Iowa Code, as amended, governing INRCOG (IC 28H and 28E.12); and WHEREAS, Waterloo City Council wishes to direct INRCOG to contract with AECOM, such that they may update the above -noted Study, and WHEREAS, the costs of updating the Study will be shared equally with the City of Cedar Falls, and NOW THEREFORE, the Waterloo City Council directs its Mayor to sign a Memorandum of Understanding with INRCOG to contract with AECOM for updating the Study. Passed and approved this day of 2018. Mayor City of Waterloo, Iowa ATTEST: City Clerk City of Waterloo, Iowa L, ng, tfn• ten+ wi art .. L.w9 �I li Waterloo "r-- 82425 Cdr sr 6124 v y{pins rlyi 1 t. s " 11 CNsr. Slay 11l7eaaia,ro n- 1 -JientNs IU4'hLOW gRrt 6tiQaif6 o x wi L Cedar Falls 3 7:,.r Ill 26.01/ ( 'e 6 Q me. ...». 11 emisomwrr -� a ltdson 7470 T � 115.02- , , ikinN ,6.040349 • e4fq.i IJna 1�W1a0Ara . caimA.w flak Run Heights 24870 ...., l fi, { X20 --- .. Hfi i I ; ' I cw.+mdM; . J +— 4, GUQdttl _ Raymond 65820 I.ha-*m i R "Di 1. Ur I oss: I rbry .p. 1 tohobiale J,/ HdaaaAva ='Ip 'I ss Ile rra 21B X41+� 4 2 .01 :, . • a;vaitsidae 25995 fk :297r 1 a at r _ I ild it ' rtviD Strand Associates, Inc.® 1) Wastewater Planning • WWTP Facilities Plan and Nutrient Reduct • Lagoon Biogas End Use Study on Study City of Waterloo City Council Workshop March 19, 2018 Randy Wirtz, Ph.D., P.E., ENV SP Nick Bartolerio, P.E. Wastewater Facilities Plan and Nutrient Reduction Study Wastewater Facilities Plan Nutrient Reduction Study Planning document for the City's wastewater treatment plants for 20 years and beyond. Considers existing facilities, anticipated growth, and future permit requirements to evaluate and recommend WWTP improvements. STRAND "Subreport" to the Facilities Plan focused on the WWTP improvements necessary for nutrient (nitrogen and phosphorus) removal as required by the Iowa DNR. 1 Wastewater Facilities Plan Drivers STPA, D ' Previous facilities plan developed in the 1990s ' Age of facilities — at the end of the typical useful life o Concerns with overall efficiency and performance ' Inefficiencies in existing WWTP operation — using less than half of available tankage and loadings exceed "useable" capacity o Construction permit/SRF Loan requirement Nutrient Reduction Study Drivers NPDES Permit Requirement • due April 1, 2018 Identify improvements necessary for nutrient reduction to be included in next NPDES permit: * 66% Total Nitrogen Reduction o 75% Total Phosphorus Reduction Reductions cannot be met without WWTP capital improvements 2 Plan Development 1 , Current WWTP condition and performance evaluation 2. Year 2040 flow and loading projections 3. Process model development and evaluation of treatment performance at future conditions 4. Determination of treatment deficiencies and future needs 5, Analysis of treatment alternatives — economic and technical evaluations 6. Project recommendations and implementation Phased Implementation of Recommended Plan $100 million of capital improvements identified over the next 10-20 years Phase Cost Addresses Near -Term (2018-2023) $55.3 million Mid -Term (2023-2028) $29.5 million Long -Term (2028+) $15.3 million Note: Costs in 1st Quarter 2018 Dollars ,s STRAND Nutrient Removal and Immediate Needs Equipment Replacement Hydraulic Capacity 3 Recommended Plan: Near -Term Improvements (2018-2023) • Nutrient Removal Improvements and Immediate Needs • Consolidation of two WWTPs using existing unused tankage to solve capacity issues and provide excess capacity for growth • Complies with IDNR's nutrient removal requirements Improves energy efficiency and process performance • Potential digester gas reuse revenue STRAND Optional Digester Gas Beneficial Reuse • Digester gas currently only used to heat digesters, excess flared • Potential option to produce pipeline quality natural gas • Similar to Dubuque, Sioux City, Des Moines • Revenue generation through renewable energy credit program • Preliminary Estimate - $1.2 million net revenue per year 4 Recommended Plan: Mid -Term Improvements (2023-2028) • Equipment replacement • Structural rehabilitation Roofs 4 Windows/doors HVAC Misc. structural repairs • Equalization Basin Improvements ?AND Recommended Plan: Long -Term Improvements (2028+) Hydraulic improvements to comply with IDNR requirements 5 Recommended Plan Phased Implementation Phase Cost (2018 Basis) Future Loan Payment Addresses Near -Term (2018-2023) $55.3 million $3.6 million Nutrient Removal and Immediate Needs Mid -Term (2023-2028) $29.5 million $2.2 million Equipment Replacement and Buildings Long -Term (2028+) $15.3 million $1.3 million Hydraulic Capacity Notes: Costs in 151 Quarter 2018 Dollars SRF Loans: 20 years @ 2% interest rate Recommended Plan Phased Implementation Fiscal Year Total Outlay Loan Disbursement Loan Payment 2019 $3,500,000 ($3,500,000) $0 Near -Term 2020 $13,700,000 ($13,700,000) $0 Improvements 2021 $27,400,000 ($27,400,000) $0 2022 513,700,000 (513,700,000) $3,600,000 Mid -Term 2023 52,500,000 ($2,500,000) $3,600,000 Improvements 2024 516,800,000 ($16,800,000) $3,600,000 2025 516,800,000 (516,800,000) $5,800,000 2026 $0 $5,800,000 2027 50 $5,800,000 2028 $1,700,000 (51,700,000) 55,800,000 Long -Term 2029 $10,000,000 ($10,000,000) $5,800,000 Improvements 2030 510,000,000 ($10,000,000) $7,100,000 2031 $7,100,000 2032 $7,100,000 2033 $7,100,000 2034 57,100,000 2035 57,100,000 2036 57,100,000 2037 $7,100,000 2038 57,100,000 2039 57,100,000 6 Next Steps — Facilities Plan and Nutrient Reduction Study Finalize and Submit Nutrient Reduction Study to IDNR Deadline: April 1, 2018 Finalize and Submit Wastewater Facilities Plan to IDNR Begin Design of Near -Term Improvements Following IDNR Approval Anticipated 2-4 months following submittal Construct Near -Term Improvements: 2019-2022 Lagoon Biogas End Use Study Objectives Planergy discontinuing operations Evaluate necessary lagoon upgrades Evaluate revenue from generation of pipeline quality gas for pipeline injection 44. STF ,, 7 Lagoon Performance and Condition Lagoon currently performing exceptionally well Cover in need of replacement, leaks resulting in high biogas oxygen and nitrogen content Performance indicates that lagoon has excess capacity 44 41 ill STRAND Lagoon Current and Projected Gas Production Current Condition Potential Future Condition with Growth and HSW Influent BOD Load Biogas Produced Additional HSW volume 49,000 lbs/day 870,000 cfd (580 MMBTU/day) 95,000 lbs/day 1,200,000 cfd (800 MMBTU/day) 65,000 gpd 8 Next Steps — Lagoon Biogas Study Finalize Capital Cost Opinion and Gas Revenue Estimates : March/April 2018 Submit Draft Study to City: April 2018 STRAND ASSOCIATES® Excellence in Engineering Since 1946 9