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HomeMy WebLinkAbout2017 06 12 Consent 302 Wastewater Master PlanCOMMISSION AGENDA ITEM 302 Informational Consent X Public Hearings Regular June 12, 2017 KS KL Regular Meeting City Manager Department REQUEST: The Utility Department requests the City Commission's authorization to execute task order #4 with CPH, Inc. in the amount of $100,700.00 for the Winter Springs Wastewater Master Plan. SYNOPSIS: The City's two wastewater treatment plants are deteriorating and a strategy needs to be developed and adopted for their replacement. CONSIDERATIONS: This agenda item is needed to develop a plan for the replacement of the east and west wastewater treatment plants and their associated facilities. The main structures of the treatment plants were constructed primarily of steel in the 1970's and 1980's and the highly corrosive environment results in constant deterioration even with the $250K worth of annual repairs currently being performed. The scope of work includes; evaluations of potential replacement locations including existing sites /new sites /consolidating to one site, types of treatment options, ramifications of site selection on pumping and piping, future demand /growth through buildout, energy efficiency opportunities, and flow modeling. The proposal is attached. The cost for the study is $100,700 which will be funded by the Utility Enterprise Fund. A supplemental appropriation from fund balance to the consulting line code will be required. CPH was approved as an Engineering Continuing Services Consultant on December 8, 2014 Consent 302 PAGE 1 OF 2 - June 12, 2017 under Consent 300 in response to RFQ #001 /15BF. This proposal is Task Order #4 under that continuing Services Agreement. The project scope will be completed in 180 days. FISCAL IMPACT: The cost for the study is $100,700 which will be funded by the Utility Enterprise Fund. A supplemental appropriation of $100,700 from fund balance to the consulting line code will be required. COMMUNICATION EFFORTS: This Agenda Item has been electronically forwarded to the Mayor and City Commission, City Manager, City Attorney /Staff, and is available on the City's Website, LaserFiche, and the City's Server. Additionally, portions of this Agenda Item are typed verbatim on the respective Meeting Agenda which has also been electronically forwarded to the individuals noted above, and which is also available on the City's Website, LaserFiche, and the City's Server; has been sent to applicable City Staff, Media/Press Representatives who have requested Agendas /Agenda Item information, Homeowner's Associations/Representatives on file with the City, and all individuals who have requested such information. This information has also been posted outside City Hall, posted inside City Hall with additional copies available for the General Public, and posted at six (6) different locations around the City. Furthermore, this information is also available to any individual requestors. City Staff is always willing to discuss this Agenda Item or any Agenda Item with any interested individuals. RECOMMENDATION: Staff recommends the City Commission; authorize the execution of Task Order #4 with CPH, Inc. in the amount of $100,700 for the Wastewater Master Plan, approve a supplemental appropriation of $100,700 from Utility Enterprise Fund to the consulting line code, and authorize the City Manager and City Attorney to execute any and all applicable documents. ATTACHMENTS: 1. CPH Task Order #4 for Wastewater Master Plan (18 pages) Consent 302 PAGE 2 OF 2 - June 12, 2017 TASK ORDER 4 TO AGREEMENT DATED February 19, 2015 CONSULTING ENGINEERING SERVICES FOR THE WASTEWATER MASTER PLAN BETWEEN THE CITY OF WINTER SPRINGS AND CPH, INC. This Task Order 4 dated , 2017 by and between the City of Winter Springs (hereinafter called the OWNER) and CPH, Inc. (hereinafter called the Engineer), is mutually agreed upon and declared an authorized Task Order based on Agreement for Engineering Services dated February 19, 2015, RFQ #001/15/BF. The appropriate provisions of the Agreement apply as fully as if repeated herein. March 13, 2017 Kipton Lockcuff, P.E. City Engineer City of Winter Springs 1126 East SR 434 Winter Springs, Florida 32708 RE: Master Wastewater Plan CPH Project No. Z6582 Dear Mr. Lockcuff: 1117 East Robinson Street Orlando, Florida 32801 Phone: 407.425.0452 Please accept this letter as our proposal to provide engineering services for a Master Wastewater Plan. It includes an analysis of the existing and future sewerage needs of the City; the evaluation of the consolidation of treatment facilities; preparation of an expanded model and analysis of the wastewater transmission system for existing and future growth as well as the proposed consolidation of flows into one treatment facility; and, new treatment facilities. The consolidation of wastewater treatment facilities is a major change for the wastewater system of the City of Winter Springs. It will be a new direction and has many facets that need to be explored and analyzed. It is the future roadmap of the City of Winter Springs Wastewater Utility. The hydraulic model of the transmission system is a significant part of this plan and it will provide the City with data and recommendations to evaluate the treatment location options. The model will be capable of being modified for future analysis and/or expansion of the transmission system. This planning effort will be a comprehensive compilation of prior work effort, the analysis of the existing East and West systems and the proposed combined East and West systems. The Scope of Services is attached as Exhibit 1. A proposed Table of Contents for the final report/Master Plan is attached as Exhibit 2. A Manpower and Fee Estimate is attached as Exhibit 3. Payment for our services will be in accordance with our existing Continuing Services Contract. We propose to provide the services for a lump sum amount of $100,700.00. We agree to work closely with you under your general direction and control, keeping you apprised of progress on the project. If you are in agreement with the scope of services and fee, please execute this proposal and return a copy to us. We will await the issuance of your P.O. to begin work. Sincerely, CPrp, Da E. Mahler E. Senior Vice President JAZ65821ProposatslWinter SpringslMaster Wastewater Plan 20171Master Wastewater Pian.Doc W w VV c. p h c o r p> c C. rit Signature Sheet ENGINEERING SERVICES PROPOSAL FOR SUBMITTED BY: CPH E NEE , I C. David E. Mahler, P.E Sr. Vice President/Associate Date: ACCEPTED BY: CITY OF WINTER SPRINGS Kevin Smith City Manager Date: CITY OF WINTER SPRINGS MASTER WASTEWATER PLAN FA EXHIBIT 1 Scope of Services General The purpose of this Amendment is to provide for Engineering Services, more specifically itemized herein, for a Master Wastewater Plan for the City of Winter Springs. The existing wastewater treatment infrastructure, the East and West Water Reclamation Facilities, are aging and a plan is required to extend operation of the utility system into the next decades. The existing wastewater treatment systems are reaching the end of the useful life for the existing equipment. In addition, energy efficiency will be increased with new treatment technology. The analysis includes combining the East and West sewerage treatment systems into one facility. This would reduce operational and logistical staff and would centralize the sewerage system operations. Since this evaluates system changes and new facilities, the Master Wastewater Plan will be developed in accordance with the State of Florida State Revolving Funds (SRF) Facility Plan model format to position the City for future loans from this program. Exhibit 2 contains the proposed Table of Contents for the report. Alternatively this report can also be called a "Wastewater Facilities Plan" in accordance with the SRF program. Data Gathering The details of the data collection are described below: 1) Collect and review pertinent data (summaries) and reports related to the existing wastewater treatment facility including the FDEP discharge monitoring reports (DMRs) and sewer service connection data for the last five (5) years. Items include: a) FDEP Operating permits b) FDEP OMPR, CAR and Operating Protocol documents c) City of Winter Springs Capital Improvements Plans or Renewal and Replacement Plans 2) Population growth and anticipated wastewater flows will be based on the population data provided by the City and will only be determined for the WASTEWATER SERVICE AREA (septic tank treatment systems areas are excluded). 3) Develop with the City Staff a large scale service area map showing the collection and transmission system. This will be based on the City of Winter Springs GIS data and maps. We will not develop new system maps. 4) CPH, with the assistance of City staff, will identify septic tank areas, but this plan will not include a study of "phasing -out" the existing septic tank treatment systems, only identification. These areas will be held in abeyance. It is not planned that these areas will be incorporated into the sewerage system. These areas will not be considered for future growth of the system. 5) Develop a WASTEWATER SERVICE AREA map. 6) CPH will meet with City staff to discuss the available data noted above. 7) From the population and historical flow data, CPH will estimate future flows: ADF, MDF and Peak. S) We will not provide a Reclaimed Water Master Plan or update. We will not provide an analysis of the effluent disposal system (percolation ponds and dedicated spray sites). A description of the existing reclaimed and effluent disposal system, in general, will be provided. 4 9) We will not provide an assessment of impact fees. Description of Planning Area CPH will provide general information on the City of Winter Springs for the items in Chapter 3 of the proposed Table of Contents. Information for these sections will be obtained from generally available public data. Detailed investigations will not be made of surface waters, soils, ecology, flood plain, environmentally sensitive lands, archeological and historical sites, air quality and socio- economic conditions. Wastewater Reclamation Facilities It is assumed for this Master Plan that the existing facilities have reached their "useful life" and that new wastewater treatment facilities are required. Reuse storage, pumping and distribution systems will remain as well as the existing disposal sites and mechanisms. For planning purposes, the existing and future flow needs (through Year 2040) for wastewater treatment for the entire City limits area is approximately 3 MGD. Treatment will be consolidated at one treatment site. Reuse facility sites will remain in the current locations. These locations are the East W RF, the West W RF, the Oak Forest storage site and the Lake Jesup Augmentation site. Each of these sites have reclaimed storage and pumping facilities. So, a general (not detailed) analysis of providing reclaimed water to the various storage and pumping sites will be made after consolidation of the wastewater treatment sites. The wastewater treatment level will be equivalent to the Public Access Reclaimed Water requirements under current Florida standards. Based on our experience and knowledge, we believe that biological nutrient removal processes will be required in the future. Therefore, our analysis will include a treatment system with biological nutrient removal capability. We will study the various treatment options available on the market today for treating sewage to a public access level (including nutrient removal). We will look at size and impact on the available sites and based on best available information, make a recommendation. We will then take the recommended process and apply it to each location by preparing a "footprint" layout. The new wastewater treatment facility will include: 1) Master pump station on site with variable speed control (see flow equalization basin below). 2) New headworks - screening, grit removal and flow diversion. 3) Flow equalization basin and variable frequency drive pumps for sending flow to the treatment process. Existing pump systems currently pump up to the Treatment plants directly, so we can pump directly to an EQ and then the new pump station will feed the treatment facility. 4) New biological treatment units — multiple trains for back -up. 5) New filtration units. 6) Reuse of the chlorine contact chambers (new units where applicable). 7) Biosolids treatment facilities to meet Class A Land Application criteria (digesters and processing facilities). Process selected by City Staff. 8) Tank drainage system. 9) Odor control of headworks. We will evaluate the following wastewater treatment plant location scenarios: 1) Construct a new 3 MGD Treatment Facility at the West WRF site. 2) Construct a new 3 MGD Treatment Facility at the East WRF site. 3) Construct a new 3 MGD Treatment Facility at a central site (Oak Forest disposal site /Site 16 /Site 17). 4) Construct two Master Pump Stations and send flows to the Iron Bridge Regional Facility and obtain reclaimed water from this entity in return. From a very Macro level, we will discuss such items as capacity needed; source of reclaimed water or the end of reclaimed business; capacity costs; logistics; change of control, etc. Based on the location of the two W RFs and the South Seminole North Orange County Wastewater Transmission Authority forcemain, we will assume two locations of introducing sewage flows to Iron Bridge. CPH will Study and evaluate the above locations for construction of new equipment with the following criteria. 1) Consider the ability to build new facilities on existing sites while maintaining the use of the existing facility during construction. 2) Consider energy efficiency. 3) Built -in back -up capability and the ability to refurbish without compromising treatment capability i.e. follow EPA Reliability Criteria at a minimum and allow for operational and maintenance needs. 4) Consider ease of operation and manpower requirements. 5) Consider proven capability of the process. 6) Consider operational longevity of equipment. 7) Consider land requirements and land use designations. 8) Consider adjacent uses (present and future). 9) Consider the transmission of sewage to the site; coordinate with the SewerCad modeling. 10) Summarize alternative results and evaluate as to advantages and disadvantages of each as to capital and Operation and Maintenance costs; service capability; expandability; conservation and water reuse goals; ease of operation and maintenance including monitoring; land use and planning considerations; environmental and aesthetic considerations; flexibility in stages. 11) Discuss and finalize with City Staff. Collection and Transmission System Modeling and Analysis A SewerCad model of the existing City of Winter Springs Eastern wastewater transmission system (NE Corridor) was previously developed. We will expand this model to include the remaining eastern service area and add the Western service area. This will provide the City with one complete sewer system model. The City will be able to analyze any part of their system and see how new projects integrate with their existing system. The purpose of the modeling described herein is to analyze various options for the re- routing of the City's wastewater to a single wastewater treatment facility. The modeling process is a major part of this Master Wastewater Plan. CPH will take the data available and prepare a SewerCAD model of the City wastewater transmission system. This system C. shall also contain known, designed or planned improvements identified by the City for inclusion in the analysis. CPH will prepare a model capable of performing a 24 hour simulation. City shall provide data to assist the Engineer in the development of a diurnal flow curve. The City shall provide all pertinent data and lift station pump curves. This includes: 1) Number of pumps per station; 2) Wet well diameter; 3) Variable speed pumps and locations; 4) Size, type and brand of each pump at each associated lift station and a pump curve for each pump; 5) Forcemain and gravity system sizes. The gravity size only applies to gravity sections required for re -pump situations. For these gravity sections that receive a lift station discharge and the flow continues on to another lift station (re- pump), we need to have the invert elevations at each manhole or at least the total drop and total length from the initial discharge manhole to the lift station; this will be used to determine gravity sewer capacity. 6) Pump station run times or flow data; 7) Float elevations at each lift station; 8) Relative elevations (based on USGS datum) of the top and bottom of the lift stations (these can be obtained form record drawings and do not need to be surveyed unless the City wants that degree of accuracy); 9) Wet well influent line invert or depth from the top. The City shall identify and provide the lift station basin areas. The City shall provide the number of single family and multi family units and commercial flows within each lift station basin. Population and Wastewater Flows Population will be based on the data from the Water Supply Plan (currently underway). This data will be adjusted to a wastewater service area population based on removing the areas on septic tanks systems (see Data Gathering above). Historic wastewater flows future projections of wastewater flows will be based on the DMRs. Future projections of wastewater flows will be based on the historic flows applied to the future population projections. Summary of Recommended Improvements Based on the information and analysis, and along with input from the City Staff, select a recommended plan. Upon selection, develop and refine plan with additional construction cost detail. Incorporate this information in the report. Refine the staged implementation of the selected plan to show 7 construction of various system components for the 5 year and 10 year needs. Prepare planning project cost estimates for staged implementation of the plan for the 5 year and 10 year needs. Report The following items will be prepared for the project: 1) CPH will prepare a draft report for review and comment by the City. Included will be maps in both AutoCad and GIS format. 2) The Draft report will be submitted electronically. 3) City staff will provide review comments before or during a review meeting of the draft document. 4) CPH will incorporate the comments and provide a final document for submittal to the City. 5) The Final Report will be submitted electronically. 6) CPH will make a presentation of the Master Wastewater Plan to the City Commission as required. E:3 EXHIBIT 2 Proposed Table of Contents Chapter 1.0 Executive Summary Chapter 2.0 Introduction 2.1 Purpose 2.2 Scope Chapter 3.0 Desi 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 :ription of Planning Area Geographical Location Wastewater Service Area — Current Wastewater Service Area — Future Climate Topography and Drainage Surface Waters Soils Ecology Flood Plains Environmentally Sensitive Lands Plant and Animal Communities (Listed Species) Archeological and Historical Sites Air Quality Socio- economic Conditions 3.14.1 Population 3.14.2 Land Use and Development Patterns Chapter 4 Water Reclamation Facilities 4.1 General 4.1.1 Description of Existing Facilities 4.1.2 Need for new facilities 4.2 New Water Reclamation Facility Components 4.2.1 Pre - Treatment (Headworks) 4.2.2 Flow equalization and pumping 4.2.3 Biological Treatment and Clarification 4.2.4 Filtration 4.2.5 High Level Disinfection 4.2.6 Effluent Disposal 4.2.7 Sludge Processing, Handling and Disposal 43 Reuse — Effluent Disposal and Storage 4.3.1 Reuse System 4.3.2 Percolation Ponds 4.3.3 Reject Storage /Disposal 4.3.4 Wet Weather Storage Chapter 5 Collection[Transmission System 5.1 General 5.2 General Description of the Existing Collection System 5.3 Description of Transmission System and Hydraulic Analysis 5.3.1 Hydraulic Model Construction 5.3.2 Hydraulic Model Calibration 5.3.3 Hydraulic Modeling Scenarios 10 5.4 Design Considerations 5.4.1 Serviceability Considerations 5.4.2 Emergency Pumping Capability 5.4.3 Odor Control 5.5 Transmission alternates 5.6 Coordination with Treatment Plant locations Chapter 6 Population and Wastewater Flows 6,1 Population and Future Land Use 6.2 Historic Wastewater Flows 6.3 Future Population and Wastewater Flows 6.4 Service Area Growth Chapter 7 Design Criteria Chapter 8 Analysis of Wastewater Treatment Plant Alternative Processes and Locations Chapter 9 Selected Plan 7.1 Wastewater Reclamation Facility 7.1.1 Summary of Programmed Improvements 7.1.2 Summary of Recommended Plant Improvements and Costs 7.2 Transmission System 7.2.1 Summary of Programmed Improvements 7.2.2 Force Main Re- routing Chapter 10 Implementation of the Selected Plan APPENDICES A — Zoning and Land Use Maps B — Hydraulic Model 24 -Hour Graphs — Force Main Re- routing C - Engineer's Estimate of Probable Construction Cost for Flow Re- routing Projects D - Engineer's Estimate of Probable Construction Cost for Treatment Plant Projects 11 EXHIBIT 3 Manpower and Fee Estimate 12 Master Wastewater Plan Task Description Principal Sr. Project Manager Project Design Engineer Tech Clerical II I MASTER WASTEWATER PLAN ANALYSIS - - -- RATE HOURS Data Gathering — Principal $160.00 —_ -- - __ a.i Collect and review p ro'ectdata J Senior Project Manager 2 $ q Population d wi 1 be used from Water Supply Plan and modified as necessary' b ata Project Engineer $115.00 164 !for the sewer service area _ Design Tech 2 4 Identify areas served by septic systems. Segregate septic areas from the Clerical 11 $60.00 _ c sewered area. Septic areas will not be served by this plan. g g d Develop with staff a Wastewater Service Area Map 1 2 6 Meet with staff and evaluate existing conditions at WIRE and faciiities (use _ c I previous studies). Existing anlysis will be brief and genral in anture as the goal �is to replace the existing facilities. — 1 qj q -' Cityto provide proposed development areas forfuture growth. Engineer will dl (estimate flowforthe areas based on development data from the City. 2 4' e Evaluate FDEP design criteria as it relates to anew W RE 1 _ 4, 8 4 _ f 1, Evaluate historical wastewater flows and generation rates 1 4' _ 8 8 2 Develop peaking factors based on historical flows and acceptible standards to _ -- g assist in component sizing criteria 4 8 Description of Planning Area a Provide general description based on available published data and literature 6 Wastewater Reclamation Facilities Evaluate treatment options available for producing reclaimed water with an — a emphasls on biological nutrient removal 1 3.2_ 32I b Provide a process recommendation based on our research and analysis. 1 4I 4 p p p sizing-for p p 1 4 12, 16. Evaluate the three site location options and develop layouts for each site p p Y — .. d ((three - east, west and r lel_ Use existing site plans from previous projects. No new surveys will be performed. Consider all items listed in the scope of services_ - 12 24 24 Analysis of how to get reclaimed water back into the existing disposal sites and e systems. - -- 1— - 6 16, 16I f Evaluate the best station /site to upgrade to send flows to IBRW RF alternative; -one east and one west. 1 4 8 8 g Develop a recommendation of the best site alternative 1 4' — 4 4 h Coordinate with the modeling to determine costs to implement a and b above. 4 _ 4 i', Prepare cost estimates to assist in capltal improvement plan 1 _ _ 8_ 161 16 2 City has performed extensive research into residuals. Work with staff to develop 1 _ residual treatment facilities based on their research. — 4 SUBTOTAL DIRECT LABOR 11 118 164 110 R Misc. Expenses TOTAL TASK I RATE HOURS FEE Principal $160.00 11 $1,760.00 Senior Project Manager $150.00 118 $17,700.00 Project Engineer $115.00 164 $18,860.00 Design Tech $95.00 110 $10,450.00 Clerical 11 $60.00 8 $480.00 $49,250.00 Page T -1 Master Wastewater Plan Principal Task Description Sr. Project Manager Project Engineer Deesign Tech Clerical II II MASTER PLAN REPORT PREPARATION 0 $0.00 Senior Project Manager $150.00 a Prepare draft Master Wastewater Plan 24 40 16 8_ b' Including maps in AutoCad and GIS format 4 8 16 $3,895.00 clElectronic submission $60.00 1 $720.00 1 d Meeting to discuss draft Master Wastewater Plan 4 4 Make revisions to the draft Wastewater Plan in accord ance with the e I review 8' 8 2 fIFinalize Master Wastwater Plan 2 4' 'Prepare electronic copies of Master WW Plan for submittal to the g City 1 1 1 1 SUBTOTAL DIRECT LABOR 0 43 58 41 12 SUBTOTAL $17,735.00 Misc. Expenses $141.30 TOTAL TASK 11 $17,876.30 Page T -2 RATE HOURS FEE Principal $160.00 0 $0.00 Senior Project Manager $150.00 43 $6,450.00 Project Engineer $115.00 58 $6,670.00 Design Tech $95.00 41 $3,895.00 Clerical 11 $60.00 12 $720.00 Subtotal Labor $17,735.00 Page T -2 Master Wastewater Plan RATE Principal $160.00 Senior Project Manager Task Principal Sr. Project Project Design Clerical II Task Description Manager Engineer ; Technician III SE_ W ERCAD Model 1 Collect and review all available data Compile City lift station and force main data. Expand NE a Quadrant system to include the entire City transmission 4 40 4 b Gather population data and basin (pump station) data for input m the analysis. 4 16 4 -_- Build model of the exsiting system with input data from 2 ;!City and using City GIS data and Maps. 2 24 16 Analyze, evaluate and review force main re- routing 3 scenarios based on treatment plant locations. 4 16 40 16 4 ;Prepare information and incorporate into the Master Plan a Pipeline alignment layouts _ 8 { 8 16 1 c' Impacts on existing pump stations and gravity sewers 4 8 1 d I Estimated_ engineering and construction costs 8 8 16 _ e Conclusions /recommendations 4 8 f Meet with staff to discuss 4 4 1 SUBTOTAL DIRECT LABOR 4 54 156 1 64 11 Page T -3 SUBTOTAL $33,420,00 Misc. Expenses $67.28 TOTAL TASK III $33,487.28 HOURS RATE Principal $160.00 Senior Project Manager $150.00 Project Engineer $115.00 Design Tech $95.00 Clerical 11 $60.00 Subtotal Labor Page T -3 SUBTOTAL $33,420,00 Misc. Expenses $67.28 TOTAL TASK III $33,487.28 HOURS FEE 4 $640.00 54 $8,100.00 156 $17,940.00 64 $6,080.00 11 $660.00 $33,420.00 Master Wastewater Plan ESTIMATED EXPENSES ITEM DESCRIPTION COST UNIT TASK I TASK II TASK III Qty Ext Qty Ext Qty I Ext Photocopies - 8 112_ x 11 $0.05 Sheet $12.50 400 $20.00 401 $2.00 Photocopies - 11 x_17 $0.20 Sheet _-250 25 $5.00 _ 50 $10.00 20 $4.00 Color copies - 8 112 x 11 $0.60 Sheet — 25 $15.00 _ 25 $15.00 Color Co - ies - 11 x 17 p $0_.__85 Sheet $8.50 10 _— Plot Prints - 24" x 36" _ $0.96 Sheet -_ - -- _$8.50 20 81 _ $7.68 Pl Color ot 24" x 36" $36.00 Sheet _ _$19.20 _ Mileage _ _ $0_.545 Mile _ $43.60 80 $43.60 80 $43.60 Postage _ At Cost ---80 $15.00 $25.00 _ $10.00 TOTALS $99.60 $141.30 $67.28 Page T -4 Master Wastewater Plan TASK SUMMARY Task I Master Wastewater Plan Analysis $49,349.60 aster Plan Report $17,876.30 6Taskill ewerCad Model $33,487.28 Sum Project Cost $100 713.18 st Rounded $100,700 Page T -5