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Professional Services Agreement <br /> C08L0198 <br /> Attachment A - Scope of Services <br /> Agreement Date: December 29 2008 <br /> Project:Lake Decatur Dam Spillway Structure Repairs <br /> Project Description: <br /> Provide professional services to develop construction documents for repairs to the concrete spillway structure, <br /> spillway gates,and erosion protection at the dam. <br /> Services: <br /> The proposed rehabilitation of the Lake Decatur Dam Spillway will include repair and rehabilitation of the <br /> spillway structure. In addition, further investigation of certain conditions will be investigated during construction <br /> or monitored for purposes of determining the appropriate repair recommendations. Hanson Professional Services <br /> Inc. pcoposes to provide the following professional services: <br /> 2009 Construction Season <br /> 1. Prepare detailed plans and specifications for concrete repairs to the upstream side of the spillway which <br /> were not completed as part of the 2005 construction project. <br /> 2. Prepare detailed plans and specifications for the following work to the downstream side of the spillway: <br /> a. Training Wall between Gated Outlet Works and Spillway <br /> i. Inject cracks on both sides of the wall. <br /> ii. Replace deteriorated sections of the cap along the top of the wall. <br /> iii. Repair spalled concrete area at the top of the wall on the south (spillway) side of the wall. <br /> iv. Repair spalled concrete area near El. 590'-0"where the training wall and spillway <br /> intersect. <br /> b. North and South Sections of the Spillwav. <br /> i. Concrete repair,joint sealant, and application of an impermeable membrane over a 50 ft <br /> wide test section of the spillway. The membrane will only be placed on one-half of the <br /> repair area. <br /> <� HANSON <br /> � <br /> PSA Rev.2 2 <br />