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Exhibit A West Regional WWTP Clarifier Improvements ATKINS The County obtained a quote of $1.61VI directly from Walker for the construction associated with the replacement of the clarifier mechanisms which included the equipment, stilling wells, minor mechanical and electrical improvements, demolition and startup services. However, their price was higher than expected, did not provide proper documentation to support the quote, and had liability issues that did not meet County requirements. The County has commissioned Atkins to develop a request for proposal (RFP) for contractors to provide the construction services associated with the rehabilitation of the existing clarifiers. Since the County has standardized on Walker equipment, this RFP would provide a detailed scope of work with complete technical and performance requirements, to ensure that bidders have enough information to provide accurate, comprehensive pricing based on Walker clarifiers. Scope of Services This Scope of Services is for technical services associated with the creation of an RFP for the replacement of the mechanisms for Clarifier Nos. 1 and 2. Upon notice to proceed, Atkins will develop a general issue RFP package for use by the County Utilities Department in bidding and procuring services, provide bid support services, assist the County during the construction phase, provide final inspections, and manage the closeout. Task 01 Project Management and Meetings This task consists of overall management of the Project including contract administration, budget management, invoicing, monthly status reports, and project scheduling. It is anticipated that Atkins will organize and document an in-person kickoff meeting with a preliminary site visit and three virtual progress meetings during preparation of the RFP and continuing through Bid Services. Construction progress meetings are included in Task 05. Deliverables: Invoices, project status reports, schedules, and meeting documentation. Task 02 Data Collection Atkins will collect and review all pertinent information, including information provided by the County, previous project proposals, and previous inspection reports. Atkins will request any information that may be missing. Any information provided by County in hard copy will be scanned for project use. The hard copy along with an electronic version will be returned to the County for their records. A summary of the anticipated data is listed below. • Existing O&M manuals for the overall clarifier mechanism and the clarifier components. • Existing as -built drawings for the original plant and for upgrades to the existing basins or mechanisms. • Shop drawing submittals provided for the original clarifiers. • Previous geotechnical reports, condition assessments, inspection reports, or other studies related to the existing clarifiers, if available. 6