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EXHIBIT A WORK ORDER NO. 1 -AMENDMENT 1 INDIAN RIVER COUNTY LANDFILL SEGMENT 3 CELL 2 EXPANSION,SEGMENT 2 PARTIAL CLOSURE,AND LANDFILL GAS SYSTEM EXPANSION PHASE II-DESIGN, PERMITTING,AND BIDDING SERVICES This Amendment 1 to Work Order No. 1,when executed,shall be incorporated in and become part of the Agreement for Consulting Services between Indian River County Solid Waste Disposal District(SWDD) and CDM Smith Inc., (CONSULTANT),dated July 18, 2017 hereafter referred to as the AGREEMENT. BACKGROUND The SWDD,the owner and operator of the Indian River County Landfill,has requested that CONSULTANT prepare this Work Order to provide professional engineering services for the design, permitting,and bidding for the proposed Class I Landfill Segment 3 Cell 2 expansion,Segment 2 Partial Closure,and expansion of the landfill gas collection (LFG) system.The proposed new cell is Cell 2 of Segment 3 (approximately 10.6 acres in size),as shown on Drawing No. 5 of the 20-Year Permit Drawings dated September 2015. Segment 3 Cell 2 will be located immediately to the east of the existing Segment 3 Cell 1.The proposed Segment 2 Partial Closure (approximately 25 acres in size) includes closure of the Segment 1/Infill vertical expansion area and the final elevations of Segment 2,which has historically been referred to as the Segment 2C area. Expansion of the LFG system within Segment 2 is proposed to be constructed concurrently with the Segment 2 Partial Closure so that the final components can be installed prior to the closure cap being constructed. Phase I of this project is currently under way and includes data collection,geotechnical services, and surveying services to be utilized in design and permitting phase.The Scope of Services for Phase II of this project is described below: SCOPE OF SERVICES CONSULTANT will undertake the design,permitting,and bidding of the Class I Landfill Segment 3 Cell 2 expansion,Segment 2 Partial Closure,and LFG system expansion located at the Indian River County Landfill.The design will include the Segment 3 Cell 2 bottom liner system,leachate collection and conveyance systems,and stormwater management facilities,Segment 2 Partial Closure cap liner system and stormwater management facilities,and the Segment 2 LFG system expansion.CONSULTANT will also include an access roadway,leachate pump station and force main design services as requested by SWDD to support future cell expansion. CONSULTANT will modify,update,and make additions to the existing permit drawings previously prepared in 2010 and updated in 2015 by Geosyntec to prepare final design drawings and specifications.The procedures of Rule 61G15-27.001, Florida Administrative Code (F.A.C.) will be followed for successor engineer requirements of the Florida Board of Professional Engineers. Based on recent discussions with SWDD staff and our familiarity with the landfill site and preliminary review of the existing permit drawings,the proposed Scope of Services includes the following tasks: A-1 jj2077_Exhibit A docx