08 - Garver Engineering Agreement Contract Amendment #1 for Wastewater Plan Project

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APPENDIX A — PHASE 2 SCOPE OF SERVICES General Generally, the Phase 2 Scope of Services includes professional services necessary for design phase services and bidding services for the recommended improvements to the City of Paris Wastewater Treatment Plant (WWTP) as detailed in the July 2020 report entitled, "Conceptual Design Report City of Paris New Wastewater Treatment Plant" as prepared by Garver. Generally, the scope of services includes professional services necessary for implementation of the planned City of Paris Wastewater Treatment Plant (WWTP) Improvements to replace aging infrastructure and enhance the plant's capabilities to the permitted plant capacity of 7.25 mgd in a two phased construction approach (Construction Package 1 and Construction Package 2). The planned capital improvements include modification and refurbishment of existing facilities as well as construction of new facilities to meet the targeted capacity and treatment criteria for baseline improvements to the existing WWTP in two construction packages. The scope of services includes design of the new replacement facilities and rehabilitation of the existing plant to 7.25 mgd: • Hydraulic capacity of the WWTP Annual Average Design of 7.25 mgd. • Hydraulic capacity of the WWTP Peak Flow of 17.34 mgd. • Design Loading Assumptions as detailed in Table 5-1 of the Conceptional Design Report, dated July 2020. • Planning for identified future regulations as related to future phosphorus removal. The project will be divided into the following design packages. The scope of services in this scope includes bidding the first package only. Construction Packa e_1: • New influent pump station. • New headworks facility with fine screening and grit removal with screenings and grit processing with loading. • Foul air facilities for the headworks area. • New secondary treatment splitter structures. • New conventional activated sludge basins. • Rehabilitation of three (3) existing secondary clarifiers. • Rehabilitation and upgrade for the chlorine contact basins and the adjoining de -chlorination facility. • Rehabilitation of the chlorine system and the sodium bisulfite system. • New RASMAS pump station. • Rehabilitation of existing structures for solids holding tanks. Rehabilitation of the existing Autothermal Thermophilic Aerobic Digestion (ATAD). • Rehabilitation and expansion of solids thickening facilities. • Rehabilitation and expansion of solids dewatering facilities. • New plant water system. • Yard piping throughout the plant site and as designated by Conceptual Design Report's Drawing No. 03 and the Process Flow Diagram, (Drawing No. 4). • New electrical service facilities and electrical distribution facilities. • New backup power generator system. • New SCADA system. Appendix A - Scope of Services 1 of 9 City of Paris WWTP Improvements