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The condition assessment consisted of four documents: Technical Memorandum 1 for Subtask <br />1.2.1 (TM-1), TM-2 for Subtask 1.2.8, and the Condition Assessment Report for Subtasks 1.2.2 <br />through 1.2.7 and 1.2.9. <br />1.2.1 Assessment of Key Treatment Processes Performance and Capacities <br />Parsons' team reviewed the design criteria of key unit processes and evaluated their respective <br />capacities under the current and design loading and flow conditions. Parsons developed a <br />realistic capacity flow chart, compared with the permitted capacity and made recommendations <br />for improvements. Environmental Protection Agency (EPA) redundancy and reliability <br />requirements, as well as energy and operational efficiency, were considered to evaluate effective <br />treatment capacity. A technical memorandum (TM-1) summarizing the analysis, key findings <br />and recommendations with photos and calculations was submitted... <br />Understanding that the existing chlorination system is rated for 6.6 mgd capacity with CT of 450 <br />mg/L-min, several agencies are working to convince Division of Drinking Water (DDW) for <br />permitting systems with lower CT, even as low as 30 mg/L-min. The scope of work includes <br />condition assessment of existing chlorination system for rated 6.6 mgd capacity. <br />1.2.2 Mechanical Equipment Condition Assessment <br />Parsons' team performed condition assessment of process/mechanical equipment for the <br />aforementioned facilities. Assessment included visual observations and assessment of leakage or <br />corrosion, disabled or inoperable equipment, identified irregular noise/vibration, remaining <br />useful life, availability and accessibility of spare parts, materials of construction, etc. Parsons <br />also collected relevant nameplate data and document key findings with digital photographs. <br />1.2.3 Major Concrete Structures Condition Assessment <br />Parsons' team performed structural condition assessment for the aforementioned facilities. The <br />structural condition assessment included visual examination of the aforementioned facilities. <br />Parsons made recommendations for more advanced testing such as non-destructive testing <br />(NDT) for certain vulnerable facilities. <br />1.2.4 Civil Structures Condition Assessment <br />Parsons' team performed visual condition assessment of civil structures including sidewalks, <br />paving and grading, drain structures, and other structures. We confirmed structures shown on the <br />record drawings (e.g., catch basins, outlets, overflows) to determine effectiveness of current <br />stormwater management practices. <br />Assumption: neither drainage modifications nor a drainage plan will be required. <br />1.2.5 Above Ground Pipelines Condition Assessment <br />The condition assessment of aboveground pipelines included materials of construction and <br />condition of process piping. Parsons' team conducted visual assessment of above ground piping <br />throughout the WWTP including coating evaluation and condition of exposed metals. <br />5 <br />L;\ca\Agreements\Second_Amendment_to_Parsons_Agreement FY22-0051,docx jm <br />