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EXHIBIT A AUTHORIZATION FOR PROFESSIONAL SERVICES INDIAN RIVER COUNTY SOLID WASTE DISPOSAL DISTRICT ENGINEERING SERVICES FOR 2018 WATER QUALITY TECHNICAL REPORT CCNA-2018 WO NO. 1 This Authorization, when executed, shall be incorporated in and become part of the Continuing Contract Agreement for Professional Services between the Indian River County Solid Waste Disposal District (COUNTY), and CDM Smith Inc. (CONSULTANT), dated April 17, 2018, hereafter referred to as the Contract. BACKGROUND Water Quality Technical Reports Technical Reports of groundwater quality at the COUNTY Class I and Construction and Demolition (C&D) Landfills must be submitted to the Florida Department of Environmental Protection (FDEP) in accordance with Chapter 62-701.510, Florida Administrative Code (F.A.C.) and the Water Quality Monitoring Plans (WQMPs) of operations Permit Nos. 0128769 -023 -SO (Class I) and 0128769 -025 - SO -024 (C&D). By rule, the Technical Reports are due every two and one-half years and cover water quality data collected for the previous five routine water quality monitoring events. The WQMPs state that the Technical Report that will be prepared under this Authorization will include five monitoring events performed from January 2016 through January 2018 in accordance with the current rule. However, because the last Technical Report prepared in May 2015 was prepared under the previous rule that required a Technical Report after four monitoring events and permitting for the Class I Landfill was in progress, the July 2015 monitoring event was not included. As discussed with FDEP during the permitting process, this Technical Report will include the July 2015 monitoring event. SCOPE OF SERVICES CONSULTANT will undertake the preparation of the Water Quality Technical Report based on the requirements of Chapter 62-701.510(8) (b), F.A.C. and the monitoring and reporting requirements as of the authorization date of this Work Order. An amendment to this Scope of Services may be needed if there are any regulatory changes that result in additional work. TASK 1.0 - WATER QUALITY TECHNICAL REPORT CONSULTANT will prepare and submit a technical report in accordance with the WQMPs and Chapter 62-701.510(8)(b), F.A.C. The report will be based on laboratory data received from the COUNTY for the July 2015, January 2016, July 2016, January 2017, July 2017, and January 2018 semi-annual monitoring events. The report will include: 1. Tabular displays of any data which shows that a monitoring parameter has been detected, and graphical displays of any leachate key indicator parameters detected (such as pH, specific conductance, Total Dissolved Solids (TDS), TOC, sulfate, chloride, sodium and iron), including hydrograph for all monitor wells; 2. Trend analyses of any monitoring parameters consistently detected; A-1 jj02May2018 Tech Report WO No. l.doa