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HomeMy WebLinkAboutTask Order No 1 with Carollo Engineers for WWTP TASK ORDER NO. 1 CITY OF MERIDIAN (OWNER) AND CAROLLO ENGINEERS, A PROFESSIONAL CORPORATION (ENGINEER) This Task Order is issued by the OWNER and accepted by the ENGINEER pursuant to the mutual promises, covenants and conditions in the Agreement between the above named parties dated the~~v~ auk, `1~2 in connection with: Wastewater Treatment Plant Facility Plan Update Project (Project). PURPOSE The ENGINEER's scope of services, time of completion and compensation shall be as set forth herein. Services shall generally be described as engineering services for completion of a Facilities Planning Document for the OWNER's wastewater treatment plant. ENGINEER'S SERVICES Services shall be generally described as those necessary for completion of a Facilities Planning Document. The document will be intended to meet the requirements of Idaho Department of Environmental Quality (DEQ) for wastewater facilities state revolving loan accounts. Aside from DEQ's requirements, the completed document will also serve as a preliminary design report, including preliminary design drawings of modules of construction of treatment plant processes, ready to proceed to final design. At this time, it is assumed that the existing plant will accommodate peak monthly average flows of 5.5 mgd, and the existing site will accommodate new structures and processes to increase peak monthly average flow capacity to 9.0 mgd. TASK 1 -PROJECT MANAGEMENT ENGINEER will provide the following project management services for the duration of the project: 1.1 -Work Plan. Establish a project work plan including budget and schedule based upon this Task Order No. 1. 1.2 - Management. Manage the efforts of the project team members and subconsultants, assign manpower, delegate responsibilities, review work progress, and communicate with the City. 1.3 -Project Meetings. Attend project meetings with the City. Prepare agenda and meeting materials. Prepare and distribute meeting minutes. Our proposed schedule includes the following meetings: -1- ^ One project kickoff meeting with City staff and DEQ. ^ Six meetings to discuss alternatives during preparation of the predesign memos. ^ Two meetings during preparation of the facility plan report. ^ One City Council Presentation. ^ One Public Hearing. 1.4 -Facility Tours. Arrange and attend up to two days of facility tours at wastewater treatment plants with City staff to investigate new or alternative treatment technologies. Prepare descriptions and document comments from tours. TASK 2 -DESIGN CRITERIA MEMORANDUM The purpose of this task is to collect information, project future flows and loadings for treatment and biosolids disposal needs, and to provide a technical memorandum summarizing the criteria, which will be the basis for completion of Tasks 3 and 4, below. 2.1 -Data Collection. Review existing operating data for pertinent flow and pollutant loading data which wilt affect design of the wastewater treatment facilities. Review previous reports and facilities plans as well as published population projection data. Review existing drawings to determine existing site information. 2.2 -Flow and Loading Projections. Use data collected in previous Task 2.1 to evaluate the current and project the future flow and pollutant loading capacity requirements of the wastewater treatment plant. Project future requirements over a 20- year planning period, and correlate with the City-provided growth projections to estimate timing of required improvements up to the ultimate capacity of 9.0 mgd peak month average flow on the existing plant site. 2.3 -Discharge Regulations Review and Summary. Evaluate existing NPDES permit and potential new regulations, based on current information from the Idaho DEQ TMDL allocations for Five Mile Creek, the Lower Boise River, and the Snake River/Hells Canyon. Include potential revisions in nutrient discharge regulations and potential changes in biosolids disposal regulations. Summarize the regulatory impacts to process alternative evaluations. 2.4 -Solids Balance and Biosolids Projections. Complete a computer spreadsheet model of the solids balance for the treatment plant, including influent solids, solids produced in the activated sludge process, solids removed in the liquid processes, solids thickening, stabilization and dewatering. Use the solids balance model to project future solids production, handling, stabilization and disposal requirements. 2.5 -Plant Hydraulic Profile. Using asub-consultant, survey pertinent hydraulic structures and water surfaces to establish the existing hydraulic grade line through the existing processes, and tie the information to the treatment plant site plan, as recently provided by the City. Draw a base hydraulic profile to be used when considering addition of new hydraulic structures. Construct profile for peak-hour and average flow scenarios for current capacity. -2- 2.6 -Write Technical Memorandum. Based on the above sub-tasks, prepare a technical memorandum which sets the basic design criteria to be used in development and evaluation of alternatives for increasing the treatment plant capacity. The memorandum will include relevant information from each of the above sub-tasks. Discuss contents of memorandum with City staff (in meeting described above in Task 1.3), and incorporate City input in the memorandum. TASK 3 -PRELIMINARY DESIGN MEMORANDA Based on the information generated in Task 2, above, prepare a series of preliminary design memoranda for the treatment plant's process areas. Each memorandum will state the design criteria affecting process sizing, evaluate the useful life and capacity of existing tankage and equipment, develop and evaluate alternatives for meeting the future design conditions and recommend alternatives for final design and construction. Redundancy in each process area will also be evaluated, as will the "Do Nothing" alternative, as required under DEQ's procedures for facility plan development. Preliminary capital and O&M cost estimates for alternatives will be developed and compared. Memoranda will be completed for the following process areas: 3.1 - Headworks Area. This memoranda will include evaluation and recommendations for the influent channel and screening area, the influent lift station and the grit removal process. Alternatives to be considered include screen and compactor sizes and types, new influent pumping equipment, and alternative grit removal, pumping and washing equipment. 3.2 -Primary Treatment. This process area will include evaluation of the plant's primary clarifiers and primary sludge pumping systems. Alternatives to be considered include new sizes and locations of primary clarifiers to meet future plant loads, and new sludge pumps to improve solids removal capacity and redundancy. 3.3 -Secondary Treatment. This memorandum will evaluate alternatives to upgrade the plant's biological treatment system to meet increased future loading requirements and to meet potential future discharge regulations. Alternatives for advanced biological nutrient removal will include similar expansion of the existing aeration basins, adding new tanks or processes in series or parallel with the existing tanks, and evaluation of secondary clarification needs versus potential membrane treatment processes. Based on our initial review of treatment capacity and needs, it is anticipated that the following three alternatives will be developed and reviewed: A. Expansion of existing selector basin/aeration basin/secondary clarifier process. B. Addition of parallel oxidation ditch and clarifier, plus upgrades to existing tanks. C. Addition of parallel membrane bioreactor tanks, plus upgrades to existing tanks. 3.4 -Tertiary Treatment. The existing filtration and disinfection systems will be evaluated and alternatives will be developed for adding similar equipment, adding alternative types of filters or UV disinfection systems, and for adding coagulation or enhanced filtration systems for removal of phosphorus to very low levels. The capacity of the plant's effluent disposal system will also be evaluated, including the effluent lift station and outfall diffusers. However, permitting and preliminary design of outfall -3- diffusers and equipment is specifically excluded from this task The disinfection system will be evaluated for capacity and reliability issues. Alternative disinfection processes will not be evaluated. It is assumed that the tertiary filtration process analysis will include evaluation of the following processes: A. Expansion of existing granular media filters. B. Addition of a ballasted floculation process. C. Addition of a membrane filtration process. 3.5 -Biosolids Stabilization. Using the information from Tasks 3.1 through 3.4, update the plant's solids balance with the recommended alternatives, to project future solids production. Evaluate alternatives for improvements to the existing solids thickening and digestion processes, including alternatives for DAFT expansion and expansion of the existing temperature-phased digestion system. 3.6 -Biosolids Dewatering and Reuse. Update the information included in the 1997 Biosolids Master Plan and recommend alternatives for increasing dewatering capacity by adding a centrifuge and upgrading the dewatering building. Update evaluation of alternatives for biosolids reuse or disposal, including expanding the City's biosolids land application program versus other disposal methods, as previously described in 1997 Biosolids Master Plan. 3.7 -Plant Utility Systems. Evaluate plant utility systems, including electrical, instrumentation, natural gas, potable and plant water supply. Recommend improvements to these systems, as required to support the recommended alternatives for process improvements. It is anticipated that the deliverables for this memorandum will include an update to the non-potable water system site plan, an overall electrical single-line diagram for the plant, and a block diagram for the plant SCADA system -all of these deliverables will show both the existing system and the recommended upgrades. TASK 4 -FACILITY PLAN REPORT PREPARATION This task includes completion of a report summarizing the above information and supplementing with other required documents, for submittal to and approval by DEQ . 4.1 -Summary of Recommended Alternatives. The recommended alternatives for each of the above preliminary design memoranda will be brought together and summarized as the recommended project for design and construction. A report will be completed that describes the recommended project and references the preliminary design memoranda for further explanation of the alternatives evaluated. The report will include the overall description and will have an appendix including the preliminary design memoranda, the environmental documentation and the other supporting documents required by DEQ for a complete Facility Plan Report. The report will include a schedule for timing of the required improvements, based on the plant's peak month average flow value, and also based on anticipated regulatory requirements. The report will include an estimate of project phasing costs and of total project cost. -4- 4.2 -Environmental Assessment. An environmental assessment (e.g., Environmental Information Document) of the recommended facilities plan will be prepared in accordance with DEQ requirements. The following will be completed under this task: 4.2.1 -Data Collection Collect and compile pertinent data. Information will be collected on site conditions, wetlands, flood plain, vegetation, wildlife, soils, population, economics, cultural resources, and additional data needed to fully describe the project and its impacts. 4.2.2 -Prepare Draft Environmental Document Prepare a draft environmental document that identifies purpose and need for project, describes baseline conditions, project action(s), alternatives to the proposed action, environmental impacts, and mitigation measures. Submit draft report to City and DEQ for review and comment. 4.2.3 - Agency Consultation/Coordination Consult federal, state, and local agencies as needed to obtain data necessary for report and to obtain necessary review comments. 4.2.4 -Public Notification and Hearing Prepare a notification advertising the availability of the environmental report for review. Submit the notification to the city for advertisement in a local paper. The public comment period will extend for 30 days after publication. ENGINEER will attend and participate in a public hearing held to discuss the project, impacts, and any proposed mitigation measures. 4.2.5- Final Environmental Document Prepare a final environmental document that incorporates agency, public, and city comments as applicable. The final document will be a stand alone document that can be inserted into the facilities plan report as an appendix. Assumptions The following assumptions were made in developing the services for preparing an environmental assessment: Agency consultation will be limited to two rounds of contact: one for data collection and one to solicit comments on the draft document. The environmental report will be adopted as the environmental assessment by DEQ. The project will be issued a Finding Of No Significant Impact (FONSI). A biological assessment and wetlands delineation will not be required. The City will provide all DEQ-required analysis for the collection system portion. The City will prepare the financial portion of the report, including funding mechanisms and any required rate projection and analysis. ENGINEER will review these documents -5- and include them in the final report. 4.3 -Other DEQ Requirements/Checklists/Meetings. This task includes an allowance for other items that may be required by DEQ as a result of DEQ's initial review of the facilities plan. These requirements may include items such as assembling collection system and financial information as supplied by the City, or unanticipated tasks such as amore in-depth discussion of potential re-use sites or feasibility of combining facilities with recreational uses. This task also provides an allowance for responding to written questions or comments from DEQ or from issues that result from the public meeting process, and preparing a final, approved Facility Plan Report approved by DEQ. PROJECT DELIVERABLES The following deliverables will be prepared as part of the project: A. Design Criteria Memorandum (5 copies). B. Seven Preliminary Design Memoranda (5 copies). C. Draft Facility Plan Report (5 copies to the city, 2 copies to the state DEQ). D. Final Facility Plan Report (5 copies to the city, 2 copies to the state DEQ). E. Project Meeting Minutes. (5 copies). SERVICES TO BE PROVIDED BY THE OWNER OWNER will provide the following services to support ENGINEER in completion of the above tasks: 0.1 -Operating Data. Assemble previous three-years of treatment plant and biosolids program operating data for use by ENGINEER to summarize and use in process evaluations. 0.2 -Reports and Drawings. Provide copies of previous treatment plant and collection system master plans, facility as-built drawings, utility information and survey data for use in component evaluations. 0.3 -Collection System Analysis. Provide description of existing collection system and any required analysis of collection system and service area, as required by DEQ for submission of Facility Plan Report. (ENGINEER will include this information in draft and final report). 0.4 -Growth/Population Information. Provide information on population projections, identify the future areas of impact, and identify future residential, commercial and industrial growth as relates to increased wastewater flow and loading. -6- 0.5 -Financial Analysis. Provide financial information as required for DEQ submittal of facility plan, including financing options and plan for costs estimated by ENGINEER, and DEQ-required rate impact analysis. 0.6 -Review and Comment. Provide timely review of ENGINEER's deliverables, to incorporate City comments and information into draft and final reports. TIME OF COMPLETION Estimated Notice to Proceed: August 15, 2002 Estimated Completion of the Design Criteria Memorandum: September 30, 2002 Estimated Completion of the Draft Facility Plan Report: December 31, 2002 Estimated Completion of the Final Facility Plan Report: March 15, 2002 The ENGINEER will perform its services in a manner that will permit the OWNER to meet this schedule unless delayed due to a cause beyond the ENGINEER's control. COMPENSATION OWNER shall pay ENGINEER on an hourly basis in accordance with the attached engineering cost estimate and fee schedule (Exhibits A and B). Subconsultants shall be invoiced at ENGINEER's cost plus ten (10) percent. All other direct costs shall be invoiced at the actual cost. ENGINEER's total compensation for the Scope of Services identified in this Task order shall not exceed the amount of two-hundred thirty five thousand dollars ($235,000), without additional authorization from OWNER. The ENGINEER shall submit monthly statements to the OWNER based on the ENGINEER's labor and expenses accrued at the time of billing. OWNER shall make monthly payments in response to ENGINEER's statement. -7- EFFECTIVE DATE This Task Order No. 1 is effective as of the 23 day of ~ , 2002. IN WITNESS WHEREOF, duly authorized representatives of the ENGINEER and of the OWNER have executed this Task Order No. 1 evidencing its issuance by OWNER and acceptance by ENGINEER. CAROLLO ENGINEERS, OWNE A P ession Corporation B By: r Patrick C. White, Principal Robert D. Corrie, Mayor \```~`„u n n i-llll~ By: ~ c~ AttesP. - G ry .Deis, Principal =' SEAL V~&Iliam .Berg Jr. i Clerk 9GC ~~ ~'ovrlu~ 7/2 ~J~Z ~. '~ 9 0,9 Q, O -$- rFis U O ~ z~a~, WAS ~i z~~ W ~ W O OHr3, .-i ~ H H H T~ ~ W O S.IROH ~E~Oy ~ V N N 7 om V ~ vcVi ~ 'N^ N W ~ N ~ ~ 7 ~ ~ ~. ~. '. r. '. 'r '. 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F O Q Q a i Ct~ v~~ Exhibit B CAROLLO ENGINEERS, PC FEE SCHEDULE As of March 1, 2002 Boise, Idaho Hourly Rate Engineers/Scientists (EIS) E/S I $75.00 E/S II 87.00 E/S III 108.00 E/S IV 120.00 E/S V 131.00 E/S VI 143.00 E/S VII 154.00 E/S VIII 169.00 Principal 176.00 Engineering Aides (EA) EA I 52.00 EA II 59.00 EA III 72.00 EA IV 78.00 EA V 86.00 EA VI 107.00 EA VII 120.00 Engineering Technicians (ET) ET I 58.00 ET II 61.00 ET III 65.00 ET IV 69.00 ETV 76.00 ET VI 88.00 ET VII 100.00 ET VIII 120.00 Support Staff Office Aides 37.00 Clerical 55.00 Word Processors 65.00 Project Equipment Communication Expense 5.77 (PECE) Per DL Hour Travel and Subsistence at cost Mileage .36/mile Subconsultant Cost + 10% Other Direct Costs Cost + 10% This fee schedule is subject to annual revisions due to labor adjustments. H:\ClientWleridian_BOI1Facility Plan\Contracts\OwnerWttachB.doc