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HomeMy WebLinkAboutMurray Smith & Associates Inc - PSA Amendment No 1 Near Term WastewaterAMENDMENT NUMBER 1 to PROFESSIONAL SERVICES AGREEMENT NEAR TERM WASTEWATER TREATMENT PLAN INDUSTRIAL IMPACTS ASSESSMENT & IMPROVEMENTS PROJECT WHEREAS, the City and Murray, Smith & Associates, Inc. entered into a Professional Services Agreement on 10/20/2016 to provide engineering services with respect to the Near Term Wastewater Treatment Plan Industrial Impacts Assessment & Improvements Project, NOW, THEREFORE, this agreement is amended to allow Murray, Smith & Associates, Inc. to provide additional engineering services as described on Exhibit A & B. Scope of Work: See Exhibit A 2. Fee: The compensation for the work is based on a Time and Materials Basis not to exceed the amount of $80,205.00 for a total authorization amount of $190,186.00. See Exhibit B. 3. Time of performance: The services shall be complete for the project on or before 12/31/2017. DATED THIS 16th DAY OF JANUARY, 2016, CITY OF PASCO: Amendment No. I to Professional Services Agreement Page 1 Murray, Smith & Associates, Inc. Near Term Wastewater Treatment Plan Industrial Impacts Assessment & Improvements Project �2 `J�� Near Term Wastewater Treatment Plant Industrial Impacts Assessment and Improvements Project High Priority Projects - Design Phase Services Murray, Smith & Associates, Inc. February 15, 2017 PROJECT BACKGROUND Exhibit A The City of Pasco (CITY) and MURRAY, SMITH & ASSOCIATES, INC. (CONSULTANT) entered into an agreement and contract, dated October 25, 2016, for the Near Term Wastewater Treatment Plant Industrial Impacts Assessment and Improvements Project. Under this agreement, the Consultant is providing engineering services to identify operational and/or capital improvements that can be implemented immediately to improve the overall capacity of their Municipal Wastewater Treatment Plant (MWWTP). PROJECT ASSUMPTIONS AND SCOPE CHANGES The initial agreement included MWWTP data analysis, plant staff interviews, modelling (liquids processes, solids processes, and hydraulics), development of capacity improvement alternatives, and selection of the preferred alternatives. Due to the unknown nature of the alternatives that would be developed and selected, design of these improvements was specifically excluded from the previous scope of work. This amendment covers the design of the following top three priority improvement projects. PROJECT 1— CHEMICALLY ENHANCED PRIMARY TREATMENT (CEPT) Project Management, QAIQC & Ecology Coordination This task provides for management of the work through the completion of the project design and includes in-house review and quality control, coordination with CITY staff and the Washington State Department of Ecology, and preparation for and attendance at various project related teleconferences and meetings not provided for elsewhere in other work tasks. CONSULTANT's Project Manager will regularly update the CITY's Project Manager on the status of the work and coordinate with them on the packaging, informal bidding and award of construction contracts for the designed work. This task will also cover coordination with the CITY's Project Manager on the advance purchase of any equipment or materials, necessary to expedite the implementation of the work designed. CONSULTANT's Project Manager will also manage project staff and subconsultants to ensure execution of the Scope of Services in an efficient and competent manner. On a monthly basis, CONSULTANT's Project Manager will also prepare and submit to the CITY activity reports listing specific work activities that occurred during the invoice period, current project status, and identify activities, milestones, and deadlines that will occur in the proceeding weeks. Murray, Smith & Associates, Inc. City of Pasco February - 2017 Project 1 Design CEPT involves adding chemicals, typically metal salts, to the primary sedimentation basins. The chemicals cause the suspended particles to clump together and settle faster thereby enhancing treatment eOciency. While this alternative does not alter the sludge volume index (SVI) experienced at the WWTP, it reduces the quantity of solids and biological oxygen demand that goes to the downstream aeration basins which in turn reduces the quantity of solids going to the secondary clarifiers. With a lower amount of solids going to the secondary clarifier for a given flow, the capacity is increased, even without a change in SVI. This task covers the civil, mechanical, and electrical design of the proposed CEPT project. As presently envisioned, this project consists of a temporary 5,000 -gallon chemical storage double wall tank, a skid mounted temporary chemical feed pump system, pump supply/discharge piping and appurtenances, power supply improvements, and SCADA system integration. PROJECT 2 — INTERMEDIATE CLARIFIER MODIFICATIONS Project Management, QA/QC & Ecology Coordination This task provides for management of the work through the completion of the project design and includes in-house review and quality control, coordination with CITY staff and the Washington State Department of Ecology, and preparation for and attendance at various project related teleconferences and meetings not provided for elsewhere in other work tasks. CONSULTANT's Project Manager will regularly update the CITY's Project Manager on the status of the work and coordinate with them on the packaging, informal bidding and award of construction contracts for the designed work. This task will also cover coordination with the CITY's Project Manager on the advance purchase of any equipment or materials, necessary to expedite the implementation of the improvements. CONSULTANT's Project Manager will also manage project staff and subconsultants to ensure execution of the Scope of Services in an efficient and competent manner. On a monthly basis, CONSULTANT's Project Manager will also prepare and submit to the CITY activity reports listing specific work activities that occurred during the invoice period, current project status, and identify activities, milestones, and deadlines that will occur in the proceeding weeks. Project 2 Design The effluent from the trickling filter is presently discharged to an intermediate clarifier which is used to separate the trickling filter slough ("rock slime") from the partially treated wastewater. The slough settles to the bottom of the intermediate clarifier and is pumped back to the influent of the primary clarifiers where it is resettled and pumped to the anaerobic digesters along with primary sludge. The partially treated wastewater flows over weirs at the top of the intermediate clarifier and is discharged to the aeration basin influent. Since the biological slough from a trickling filter typically settles well (has a low SVI), the purpose of this project is to divert a controlled portion of the well settling trickling filter slough to the aeration basin. By "bio -augmenting" the aeration basin with trickling filter slough, the organisms in the aeration basin should shift over time and have better settleability than historically experienced by the CITY. As the settleability increases, so will the capacity of the secondary clarifiers. Smith ,& Associates, Inc. February - 2017 of Pasco This task covers the civil, mechanical, and electrical design of the proposed Intermediate Clarifier Modifications project. As presently envisioned, this project consists of adding a tee, flow control valves and potentially flowmeters on the discharge of the intermediate clarifier sludge pump station and routing a new pipe to the aeration basin influent feed as well as power supply improvements, and SCADA system integration. PROJECT 3 — TRICKLING FILTER MODIFICATIONS Project Management, QA/QC & Ecology Coordination This task provides for management of the work through the completion of the project design and includes in-house review and quality control, coordination with CITY staff and the Washington State Department of Ecology, and preparation for and attendance at various project related teleconferences and meetings not provided for elsewhere in other work tasks. CONSULTANT'S Project Manager will regularly update the CITY's Project Manager on the status of the work and coordinate with them on the packaging, informal bidding and award of construction contracts for the designed work. This task will also cover coordination with the CITY's Project Manager on the advance purchase of any equipment or materials, necessary to expedite the implementation of the improvements. CONSULTANT'S Project Manager will also manage project staff and subconsultants to ensure execution of the Scope of Services in an efficient and competent manner. On a monthly basis, CONSULTANT'S Project Manager will also prepare and submit to the CITY activity reports listing specific work activities that occurred during the invoice period, current project status, and identify activities, milestones, and deadlines that will occur in the proceeding weeks. Project 3 Design The trickling filter is presently used to treat a portion of the flow leaving the primary clarifiers and thereby reduce the load to the aeration basins. The existing trickling filter employs natural ventilation on an 8 -foot deep rock media bed. Naturally ventilated trickling filters rely on temperature differences of between 12 to 16 degrees Fahrenheit in the incoming wastewater and the surrounding air to generate enough air movement to support the oxygen demands of the microorganisms used to treat the wastewater. During the spring and fall, when the wastewater to air temperature are close, a reduction of airflow can reduce the level of treatment and generate odors. To maximize the performance of the trickling filters, changing from natural to forced ventilation is proposed. This task covers the civil, mechanical, and electrical design of the proposed Trickling Filter Modifications project. As presently envisioned, this project consists of installing industrial fans to the trickling filter's two exterior inspection boxes tied to the trickling filter underdrain system to provide a more dependable supply of air. Additionally, a method (manual or automatic) to provide a routine flushing of the trickling filter by increasing the hydraulic loading to the media on a routine basis will be provided. Due to the magnitude and the age/limited capacity of existing power systems in the area, the design of a new auxiliary power cabinet is anticipated. SCADA system integration design is also included in this work. Smith & Associates, Inc. February • 2017 3 COMMON PROJECT ASSUMPTIONS Design Deliverables • CONSULTANT will produce stamped 11" by 17" design drawings in electronic PDF format. Minimal to no technical specification will be produced and the drawings will include notes describing make and model of the desired equipment and materials. • A process and instrumentation diagram (P&ID) will be prepared for each project. • Each project will be produced separately and delivered on an "as developed" basis to the City to help expedite construction completion. CITY Construction Contracting • CITY will prepare all necessary additional documentation and contract language to bid the work. • Solicitation of bids for construction of the three projects will be completed by the City. • CONSULTANT will provide contact numbers for three independent suppliers of equipment or materials to the City for purchasing purposes, if advance CITY purchasing is determined necessary. Schedule It is the intent of the CITY and the CONSULTANT to complete design work as expeditiously as possible to have the projects constructed and completed by June/July Of 2017. • CONSULTANT will make every effort to complete the work in a timely manner; however, it is agreed that CONSULTANT cannot be responsible for delays occasioned by factors beyond its control, nor by factors that could not reasonably have been foreseen at the time this scope was executed. Smith & Associates, Inc. February • 2017 PASCO, WA - 2016 COMPREHENSIVE SEWER PLAN SUPPLEMENT PROPOSED FEE cook 3onwon coM comm+ . TAEIM un SM cm't— UN EnyN of M% VYbll OARC 3175 @'OC Ws M8f Skop Wl MS.f fildnr t3N rol hII1W3 SM M. T.w Moen —__-. 13eor unmN cols BuTe.... Mhv 9A inr11 TOTAL P I -8l 'e.l QhVCIq F[ CwciipMm 9 3 16 2lA f 0.652 5 SW f S.IIx SA' f 32 fY ISo f 213W s Soo f Hitt dvWY e u Y f ! to a ISI ! mm 3 - s IANM s N M }-/rlmprNnp wah I A4ro man. QANCm1Ew Ceptlinuve < x 16 2 34 f 0.6ES S 5132 pei 1 32 16 32 2 44 $ 11.196 "o S 500 S 11,596 gyRl.4 3 !1 If 1 2 If A IL s MTf f - f IAIo f l Tl9 3t'nclflr EhnMuL eio.n M.v �I. ApCWEm1 coommmo. 9 } Ix 2 :o t 3,fM t sro 5 1,30a Cu n 29 6o M le 24 2 185 s z9 W9 S s 3n 149 t SvIIMN tf G 1 S N 19 f M5 S s 9H l S 1,400m S 3 a 2 tRt 1"Tt � n u u n# t - t txw t 2m Ao.22 aw.e,. w,....w. C..N1a.�.M.N..FIWYwVY85.ImmMtb NeeEs Exhibit V 11111417