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HomeMy WebLinkAbout143-84 RESOLUTION7 RESOWTI ND. 143-84 w A RESOLUTION AUTHORIZING THE MAYOR AND CITY CLERK TO EXECUTE AMENDED TASK ORDER NO. 3 TO THE CITY'S BASIC AGREEMENT WITH CH2M HILL SOUTHEAST, INC., DATED JULY 20, 1983, FOR IMPROVEMENTS TO THE CITY'S WASTEWATER TREATMENT PLANT TO PROVIDE NECESSARY ENGINEERING SERVICES ON THE PILOT PLANT STUDY REQUIRED BY THE UNITED STATES ENVIRONMENTAL PROTECTION AGENCY. BE IT RESOLVED BY TBE BOARD OF DIRECTORS OF TBE CITY OF FAYE11EVIUE, ARKANSAS: That the Mayor and City Clerk are hereby authorized and directed to execute Amended Task Order No. 3 to the City's basic agreement with CH2M Hill Southeast, Inc., dated July 20, 1983, for improvements to the City's Wastewater Treatment Plant to provide necessary engineering services on the pilot plant study required by the United States Environ- mental Protection Agency. A copy of Amended Task Order No. 3 authorized for execution hereby is attached hereto marked Exhibit "A" and made a part hereof. PASSED AND APPROVED this 7th day of December , 1984. 4. 9 AMENDED TASK ORDER NUMBER 3 PILOT PLANT SERVICES • 11 Task Order Number 3 amends the basic agreement executed between CH2M HILL SOUTHEAST, INC. (Engineer), and the CITY OF FAYETTEVILLE, ARKANSAS (Owner), on the 20th day of July, 1983. ARTICLE 1 In response to a requirement of EPA and the ADPC&E, a pilot plant study will be conducted to verify performance not sufficiently tested and assess the operational characteristics of the A/O process for Fayetteville. The results of this study will be used to modify the design basis, if required. The study will be designed to begin operation in the winter of 1985 with at least six months of operation. Two operating periods are anticipated from January through April and from July through August of 1985. .Actual operation will depend on climatic conditions. More specifically the schedule of milestones to be reached from the date of project authorization is as follows: o Draft Work Plan Submittal o Equipment Delivery o Initial Plant Start-up o Pilot Plant Operation o Final Report October 1, 1984 November 1, 1984 December 1, 1984 January 1, 1985 February, 1, 1986 This project will be divided into five phases: Planning Phase, Installation Phase, Startup and Acclimation Phase, Operation Phase, and Report Phase. The Engineer will be assisted by McClelland Consulting Engineers and Air Products. Additionally, a nationally recognized expert in biological treatment will be retained to provide an independent overview report directly to the Owner. The size of the pilot plant will be dictated by the availability of equipment and the rigorous schedule imposed on the study. The anticipated flow rate is 1 to 2 gpm of waste flow. The scope of work is more fully described in Appendix A, attached. ARTICLE 2 As consideration for providing the services enumerated in Article 1 above, the Owner shall pay the Engineer a lump sum - IT_„ 1 FAHIBA • amount of_$393-,`-402: If work beyond the scope of work de- scribed in Appendix A is required, the work scope shall be amended in writing and payment made on the basis of payroll cost plus 162% of payroll cost plus direct project expenses plus 15% for profit. ARTICLE 3 Payment to the Engineer for services provided as described in Article 1 is due to be made within 30 days after date of billing. ARTICLE 4 The provisions of EPA 40 CFR 33.1030, which is attached as Appendix B to this Agreement, are hereby made a part of this Agreement. ARTICLE 5 IN WITNESS WHEREOF, the parties hereto each herewith sub- scribe the same in triplicate. FON" CITY By l�iJ (Name) Attest: jd/CGT2/027 ea YETTEVILLE„ ARKANSAS F S le) FOR CH2M HILL SOUTHEAST, INC. /� By: ; ..4.„...._(//�fi (7 ( e (Title) Dated this -��� day of11'"� , 1984 -2- 14 C • • Engineers ® Planners Economists ® Scientists November 30, 1984 MG18761.A0.06 Mr. Larry Wilson Arkansas Department of Pollution Control and Ecology 8001 National Little Rock, Arkansas 77209 Re: Wastewater Treatment Facilities - Pilot Plant Study Fayetteville, Arkansas C-050366-11-0 Dear Mr. Wilson: 4 Enclosed is a copy of our Work Plan and contract for the Fayetteville, Arkansas Pilot Study. These items reflect comments by ADPC&E and EPA in the meeting held Thursday, November 29. The pilot plant is now in the acclimation phase. We intend to have Dr. Joh Kang at the plant next Thursday for his initial review of the facility. If any of your staff desires to look at the facility, we will be at the plant Thursday afternoon at 2:00 p.m. If there are questions on this matter, please do not hesitate to call. Very truly yours, Stephen R. Gelman, P.E. Project Manager jd/SRGI/035 Enclosure cc: Ancil Jones/U.S. EPA Region VI (w/enclosure) Vernon Rowe/tMcClelland iW enclosure -)n Ed Barth/U.S. EPA Merl Cincinnati (w/enclosure) Bob Franzmeier/City of Fayetteville (w/enclosure) Mike Laurence/City of Fayetteville (w/enclosure) Glen Daigger/CH2M HILL (w/enclosure) CH2M HILL, INC. Montgomery Office 807 S. McDonough Street Montgomery, Alabama 36104 205.834.2870 i. APPENDIX A WORK SCOPE AND BUDGET FAYETTEVILLE PILOT PLANT STUDY INTRODUCTION Background This work plan outlines a proposed pilot plant program for the Fayetteville, Arkansas, Wastewater Treatment Plant (WWTP). The pilot plant is requested by the EPA on the basis that the treatment process selected has limited operational data available to verify performance and includes enough risk to warrant a pilot plant to demonstrate that the selected treatment process will work under anticipated'environmental conditions. The selected treatment process includes biological nitrification and phosphorus removal in a single activated sludge system using a variation of the A/O process currently marketed by Air Products and Chemicals, Inc. (APCI), Allentown, Pennsylvania. Communications with the EPA and State of Arkansas Department of Pollution Control and Ecology (ADPCE) officials indicate the following list of potential objectives for the pilot plant study: 1. To demonstrate the ability to obtain simultaneous nitrification and biological phosphorus removal during wintertime (cold temperature) operation. 2. To demonstrate the impact of nitrified mixed liquor from the oxic to anoxic stage for denitrification with special emphasis on optimizing the effects of alkalinity. 3 To determine the impact of all side streams from the solids processing area on process performance. 4. To determine chemical requirements to remove the remaining phosphorus in the biological process effluent and the impacts of these chemical additions on the operation of the tertiary filters and sludge disposal, as well as the impact of sludge recycle to the anaerobic basin. Alternatives Two alternatives were investigated to accomplish the four potential objectives listed above: 1. Construction of a specially designed 15-gpm pilot plant and operation for a 12 -month period. Both A-1 cl 4y cold -weather operation and warm -weather operation would be simulated. A 4-ft2 pilot filter would also be operated periodically to assess the perfor- mance and impacts of filter operation. 2. Use of a one-gpm mobile pilot plant which can be modified to be available from APCI for a period of 12 months to simulate both cold -weather and warm -weather operating conditions. Jar testing would be used to estimate the chemical requirements for polishing the effluent phosphorus concentration and to evaluate the need for a continuous pilot -scale filter and, if found to be required, determine the effects of sludge recycle to the anaerobic basin. These two alternatives were reviewed internally and a deci- sion was made to use the one-gpm mobile pilot plant. Reasons for this selection include: 1. The 15-gpm specially designed pilot plant would take longer to design and construct than the time required to modify, move in, and set up the one-gpm mobile unit. Since construction of the full-scale plant will be occurring concurrently with this pilot plant study, it is crucial that data be collected during the cold weather in the 1984-1985 winter season. The longer time required for the 15-gpm unit could jeopardize the possibility of obtaining cold -weather data during the winter of 1984-1985. 2. Examination of the design of the full-scale plant indicates that recycle streams should have only a negligible impact on the biological treatment process. The principle recycles include gravity thickener (primary sludge only) overflow, dissolved air flotation thickener (waste activate sludge only) subnatant, and effluent filter backwash. Of these, gravity thickener overflow and dissolved air flotation subnatant are not expected to contain any more soluble BOD or phosphorus than primary efflu- ent, and consequently, should not adversely affect the biological system. Effluent filter backwash will be returned ahead of primary treatment, where some of the solids will be removed in the primary clarifiers for discharge directly to the aerobic digesters. The aerobic digesters will not be decanted, and all digested sludge will be land -applied. 3. Discussions with EPA Cincinnati indicated that the EPA is primarily concerned about Objectives 1 and 2 A-2 ,40 • • listed above and that the one-gpm pilot plant should be adequate to address these primary objectives. 4. The 15-gpm alternative is estimated to cost about $210,000 more than the cost of the one-gpm alternative. OBJECTIVES Based on the considerations listed above, the following specific pilot plant study objectives are: 1. To operate a one-gpm pilot plant in a fashion which simulates the design loading and operating conditions for the Fayetteville variation of the A/O process to determine the effluent ammonia, soluble and total phosphorus, BOD, and CBOD concentrations which can be achieved. 2. To demonstrate the feasibility of nitrified mixed liquor recycle (for denitrification and alkalinity recapture) and its impact on nitrification. 3. To conduct jar tests to determine the supplemental chemical requirements and to select the best chemical injection point to polish the biological process effluent to meet effluent total phosphorus standards (Table 1). Pilot -scale filtration may be conducted based on future requirements of ADPC&E following data review. Filtration studies are not included in this work scope and budget. 4 If pilot -scale filtration studies are conducted, recycle stream will be piloted and a determination made on all aspects of the process. APPROACH Perspective The new Fayetteville WWTP will have a design capacity of 17 mgd (11,800 gpm), while the pilot plant will have a design capacity of about one gpm for a scale -down factor about 12,000:1. The number of stages per train will be identical. Description A listing of the unit sizes and design factors for the full-scale facilities is shown in Table 2. Unit sizes and design factors for the pilot plant are shown in Appendix C. simplified flow diagram showing the number of process units, their arrangement, and recycle streams is shown in Figure 1. A-3 • Parameter :7 Table 1 EFFLUENT STANDARDS (Dec. to March) (April to Nov.) (mg/L) (mg/L) 30 -Day Average TSS 5 5 30 -Day Average BOD 5 5 30 -Day Average NH3-N 10 2 30 -Day Average TP -P 1 1 Dissolved Oxygen 10.2 7.8 3h/SR I/d.102 Full -Scale WWTP Item FLOW, mgd PRIMARY CLARIFIERS HOR, gpd/sf HRT, hr BIOLOGICAL TREATMENT BASINS Anaerobic HRT,hr Anoxic HRT, hr w/o recycle w/recycle (100-300%) Table 2 FULL-SCALE DESIGN FACTORS Number and Size 2 @ 100' dia x 14' SWD Volume 2 x 0.82 x lg6 = 1.64 x 10 gal 3-4/train @ 6 x 102,700 30' x 30' x 15.25' SWD = 616,200 gal 3-2/train @ 30' x 30' x 15.25' SWD Oxic 4/train @ 56' x 112' x 15.7' SWD HRT, hr SRT, days MLSS, mg/L RAS, mgd SECONDARY CLARIFIERS HRT, hr SLR, lb/ft2/d HOR, gpd/ft2 jh/SRGI/d.102 4 @ 100' dia x 14' SWD 6 x 102,700 = 616,200 gal 8 x 737,500 = 5.9 x 106 gal 4 x 0.82 x 1g6 = 3.28 x 10 gal Design Conditions Peak Week Annual Average Average Day 11.4 725 3.5 1.3 1.3 0.7-0.3 17.0 1,080 2.3 0.9 0.9 0.4-0.2 W S W S 12.4 1:274- 8.3 10 5 10 5 2,530 1,520 3,500 2,070 5.8 3.5 11.9 7.0 6.9 6.9 11.4 6.0 363 363 4.6 26.9 540 4.6 13.2 540 0 -b co0 t c3) 0 U co t m.0 ,3 U O a U U LL reseR cri 1 CO O c w o c-) v 0 a 0 0 le— ami 1 11 11 11 11 0' 1 11 1 1 1 1 1 —• -11.• )0. LL O LL 0 C f. 7 c E aEc c N m ct a o a) min ��v ° co a. L' o Mc ow 'C y 0—c cf.-a) acp c c`22 1/4-4 24 1'LL SYmmaNi>,C co �U�m m (LL dQ mQ yHH ?Ocn cn mt a � Z'Z'ou �ccc .c,.a a< ~, EEccX.cpmy ` .Cc`<.P)Mg a a acOcow0a¢5bO0ii0a00a° 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 E V) U CO CO CO U LL CO u) Q U) LI- CO CO CO CO 0 cn aI- " aaaa 0ocn U¢ 3001.LC. <a CO cai)° C7 c 0 0 0 0 O a3 Z 0 FE. (CdU 13.) 1CD 00 >, =E r 0 • • Procedures The pilot plant will be operated continuously during the start-up, acclimation, and demonstration operation period. Seed sludge will be added to the system from an operation AO plant pilot to speed up the acclimation. The feed to the pilot plant will be full-scale primary clarifier effluent with existing recycle streams diverted downstream of the take -off point. Recycle stream flows have been accounted for in the pilot plant design and operation. AP personnel will be involved in pilot plant start-up and acclimation. During the actual operation period the pilot plant will be attended 5 days a week by CH2M HILL and McClelland Engineers staff. The planned staffing is for 40 hours a week by CH2M HILL's process engineers and 20 hours a week by McClelland's technician. Weekend coverage will be the minimum necessary to ensure continued operation of the facilities. Composite samples will be collected at selected sample points with 24-hour composite samplers and will be collected on a preselected flow proportional basis (to simulate actual diurnal loadings). Additional information on the sampling, testing, and influent flow rate variation is included in Appendix B, Experimental Work Plan. CH2M HILL will analyze data as it is collected and will make process adjustment determinations. An independent consultant will be retained by the City of Fayetteville to visit the pilot plant and to provide an independent review of the operating data and the pilot plant summary report. The independent consultant will be retained during the start-up period to advise on QA/QC procedures and to review planned operations. PROJECT ORGANIZATION All services required for the pilot plant studies shall be coordinated by Robert Franzmeier, Project Director. CH2M HILL (Engineer) and its subcontractors Air Products (AP) and McClelland Consulting Engineers (subcontractor) shall provide the necessary engineering services. Escom Laboratories shall, provide analytical services under a direct contract with the City of Fayetteville (City). Joh Kang (Consultant) of McNamee, Porter, and Seeley shall provide a separate overview role to be more fully described in the work scope. The pilot plant is provided by APCI. All refurbishing, installation, mechanical start-up, and biological acclimation shall be their primary responsibility. Following biological acclimation AP shall be responsible only for mayor pilot A-4 • plant maintenance and consulting on an as -requested basis. AP will not maintain full-time presence during the operation and later phases of the project. The Subcontractor will provide cost effective local support during pilot plant installation and operation, and will assist in writing the final report. Coordination of all services will be the responsibility of the Project Director, acting for the City. The organization chart for the project is shown on the following page. Project Responsibilities A brief narrative follows describing the responsibilities of each member of the project team. Project Director The responsibility of the Project Director is to provide overall project coordination, provide communication between the City, Engineer, Consultant, Escom Labs, and the Regu- latory Agencies. Independent Project Consultant The Independent Project Consultant will provide general oversight through review of the work plan, monthly and final reports, and will make three site visits. The Consultant will also be responsible for over sight for the QC/QA program. A final report will be prepared and presented to the City. Escom Laboratories will provide to the project direct as well as QC laboratory services to specifically QC the field analyses in accordance with the following schedule: Analytical Test Program Tests Per Week Parameter Operation Interim QC TKN 4 2 NH3 12 6 NO3 14 7 TSS TP 14 7 Ortho P 16 8 BOD 28 14 MLSS/MLVSS -- VSS -- A-5 6 5 5 W J J : 0 W *a d FIN n E Io- d N UJ M A.i u. Vis 0 o a cc 0 ti ti J V Z01 W O G t 3 o C c as W a f� (7 CC Z Z J O a I- 1- 0 tiO a o ins y W CC J 3,12 J 1- V z Z J~ a� HS 00 JZ W H J ¢ JN W z H¢ 1- C7 w0 ›-O Coordination of samples and data reporting will be the responsibility of the Engineer. Engineer The Engineer shall have overall technical responsibility for the project. This responsibility will be carried out by the following as follows: Principal -in -Charge. Responsible to make sure that the resources of CH2M HILL are made available to the project in a timely and efficient manner. Responsible for seeing that the overall objectives of the project are met. Project Manager. Responsible for developing and execut- ing the project plan. The project manager shall be responsible for coordination of all Subcontract and APCI services and coordinating with the Project Director on all project matters. Process Consultant. Responsible to see that the pilot plant is operated in accordance with the WWTP design basis, interpret results, assist in pilot plant op- erations, and to provide general technical assistance to the project manager. Process Engineer. Responsible for day-to-day services during the operations phases. Subconsultant The subconsultant was chosen to provide services because of the ability to provide timely and cost effective local assistance. The Subconsultant will provide staff to the Engineer in the following areas: Subconsultant Coordinator - Responsible for coordination of all local activities and will attend project meetings and assist in writing the final report. He will be responsible to see that the resources of the Subconsul- tant are made available to the project in a timely and cost-effective manner. Lead Engineer - Responsible for local engineering principally during the start-up, acclimation and opera- tional phases. During the interim operational phase will be responsible for the pilot plant operation. Technician - Responsible for onsite assistance on a day-to-day basis during the installation, acclimation, and operations phases. He will assist on a daily basis during the interim operations period. A-6 • • PROJECT PHASES The project is divided into the following five phases; planning, installation, acclimation, operation, and final report. Each of these phases is discussed below. Planning Phase The initial project phase is a planning phase in which project scope and activities are defined. Tasks in this work phase include: 1. Development for project work plan 2. Development of project budget as scheduled 3. Provision for local pilot plant arrangements including electrical and plumbing service 4. Development of subcontractor working agreements 5. Attendance of client, EPA, and ADPC&E meetings to review and further define work scope and project work plan 6. Development of independent consultant procurement 7. Development of lab procedures and protocols Installation and Acclimation Phase APIC will have primary responsibility to install the pilot plant at the Fayetteville Wastewater Treatment Plant (WWTP). It is anticipated that this effort will take 14-21 days after the pilot plant arrives onsite. The pilot plant will receive primary clarifier effluent from the existing facility. Vacuum filter filtrate will be removed from the primary effluent so that this waste stream will be compatible with the proposed full-scale primary effluent stream. Modification to remove the filtrate line and replacement of the filtrate pumps will be undertaken during this phase of the work. Specific tasks to be completed under this phase include: 1. Rerouting of vacuum filter filtrate line 2. Electrical hookup to pilot trailer 3. Field hookup of pilot components including inter- connecting piping, unit leveling, electrical 4. Instrumentation calibration and checkout 5. Hydraulic testing of units 6. Sampler setup A-7 • Acclimation Phase Following hydraulic chedkout of the pilot plant, approximate- ly one-month acclimation period will begin. The purpose of this phase is to develop microorganisms suited for biological removal of nitrogen and phosphorus and to begin to adjust plant operation to goal conditions (solids retention time, hydraulic retention time, aeration requirements, solids recycle rates, etc.). Approximately 2-3 sludge ages are required to acclimate the plant to the point where useable data can be taken. Activities planned for this work phase include: 1. Introduction of primary clarifier effluent to system 2. Establish flows, recycled rates, solids wasting rate Establish sampling procedures II 4. Initial data collection to assess progress of acclimation 5. Training of operators APCI will have a technician/operator onsite full-time during the acclimation period. This period is critical to the establishment of a biomass to accomplish phosphate and nitrogen removal. APCI's familiarity with the process. and their equipment will greatly facilitate this process. Active biological solids from an operating A/O system will be used to seed the pilot plant to expedite acclimation. The Engineer's and Subcontractor's personnel will also be involved in this phase. Their primary tasks will be to become familiar with pilot plant equipment, process op- erations, and control systems and to assist APCI staff in the pilot plant operation. Operation Phase This phase of the project will begin following biological acclimation, hopefully prior to January 1, 1985. The Engi- neer will be fully responsible for this phase of the project, assisted by the Subcontractor. A total of six months of pilot plant operations are budgeted and planned for. The anticipated schedule is as follows: Winter Operation January 1 - May 1 A-8 Interim Operation Summer Operation Interim Operation May 1 - July 1 July 1 - September 1 September 1 -.December 31 (by City forces) The pilot plant will be operated by a process engineer and technician during the operation phase. Each will work a five day, 40 hour week with schedules developed to maximize coverage of the pilot plant during the week, based on operational requirements. During the interim operation period, May 1 through July 1, the pilot plant will be operated to maintain biological activity with reduced sampling with only the technician working 1/2 time, assisted by WWTP staff as needed. City forces will operate the pilot plant in a similar manner during the second interim operation period, September 1 through December 31. Sampling during this period is anticipated to be reduced 50% from the operational period schedule. Monthly summary reports and data review will be prepared during the course of the study. These will allow ongoing process evaluation and assist in establishing process modifications required for further study. Report Phase Two interim reports are planned. The first report will be mid-May after approximately 4 months of operation. The second summary report will be presented in mid-September 1985 summarizing the second period of operation (2 months) . A final report will be presented by January 30, 1986, summarizing the entire pilot study. General Project Tasks Over the course of the project study, several tasks will occur. These include project management, senior process review, client, EPA, and ADPC&E meetings, and data management. jd/CGT2/027 A-9 11 PROJECT BUDGET The total budget planned for the work $475,000 divided as follows: Independent Escom Lab Engineer A detail of each of Consultant Labor Category Class 9 Class 8 Class 4 Consultant these follows: Hours 16 245 260 Overhead - 134% Total Overhead and Labor Expenses 5 air fares @ 670 5 car rentals @ 45 5 days @ 21.25/day Total Expense Profit Total Escom Labs Parameter TIN NH3 NO3 TSS TP Ortho P BOD MLSS/MLVSS VSS scope described is $ 30,000 51,598 393,402 Hourly Rate 31.83 22.13 14.15 Lab Costs Unit Price Tests 15.00 15.00 7.50 8.00 15.00 12.50 15.00 16.00 16.00 Assume 15% additional test on a non- scheduled basis A-10 Total 130 390 455 195 455 520 910 160 160 Cost 509 5,422 3,679 9,610 12,878 $22,488 $ 3,350 225 106 $ 3,681 3,831 $30,000 Cost($) $ 1,950 5,850 3,413 1,560 6,825 6,500 13,650 2,560 2,560 $44,868 $ 6,730 $51,598 • • Engineer The cost for the Engineer includes Subcontractor and APCI costs and is broken down by phases as follows: PLANNING PHASE Engineer Man Days $/Man Day $ E-4 Project Manager 31 149 4,619 E-7 Project Administrator 7 225 1,575 E-5 Project Consultant 18 171 3,078 0 - Office 3 66 198 TE -2 Technician 4 84 336 9,806 Subconsultant Man Days $/Man Day $ Subconsultant Coordinator 12 226 2,712 Lead Engineer 7 142 994 Technician 2 109 218 3,924 Labor Escalation None - All activity in 1984 Overhead Engineer - 9,806 x 1.62 = 15,885 McClelland - 3,924 x 1.10 = 4,316 Total Labor this Phase $33,931 INSTALLATION AND ACCLIMATION PHASE Engineer Man Days $/Man Day $ E-4 Project Manager 21 149 3,129 E-7 Project Administrator 6 225 1,350 E-5 Project Consultant 6 171 1,026 E-2 Process Engineer 15 118 1,770 7,275 Subconsultant Man Days $/Man Day $ Subconsultant Coordinator 2 226 452 Lead Engineer 7 142 994 Technician 21 109 2,289 3,735 A-11 it • Labor Escalation None - All activity in 1984 Overhead Engineer - 7,275 x 1.62 = 11,785 McClelland - 3,735 x 1.10 = 4,109 AP Transport, hook-up, and installation Acclimation Engineer Total this Phase OPERATIONS PHASE Man Days $/Man Day y • 13,050 16,171 29,221 $56,125 E-4 Project Manager E-2 Process Engineer E-7 Project Administrator E-5 Project Consultant Subconsultant 59 140 15 25 Man Days 149 118 225 171 $/Man Day 8,791 16,520 3,375 4,275 32,961 Subconsultant Lead Engineer Technician Coordinator 13 26 176 Labor Escalation Engineer McClelland Overhead Engineer McClelland AP - 32,961 x 1.04 = 34,279 - 25,814 x 1.04 = 26,846 - 34,279 x 1.62 = 55,532 - 26,846 x 1.10 = 29,531 Maintenance Tear down & shipping Total $15,000 6,000 $21,000 226 142 109 2,938 3,692 19,184 25,814 this Phase $167,188 A-12