R2002-172 AUTHORIZING THE EXECUTION OF SUPPLEMENTAL AGREEMENT NO.2

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� ' ► • ; ]E�0�9[]EItZ�. �� �,1��,�,' ��JLL 11�L lld�y llALLLII a ,' CONS[JLTING IIVGINffi�S AGREEMENT FOR PROFESSIONAL SERVICES PROJECT DATA DATE OF CONTRACT August 19,2002 JOB NO. 4572 PROJECT NAME Lake Decatur Basin 6 Sediment Storage Site Supplemental Agreement No. 2 LOCATION Oakley Township CLIENT City of Decatur BILLING ADDRESS 1 Gary Anderson Plaza, Decatur, IL 62523 SCOPE OF SERVICES ' The following paragraphs summarize the scope of services to be provided. A detailed breakdown of the scope of 'I services is shown on the spreadsheets that are included as Attachment A to this Agreement. Existing Site Phase I Study Investigate, study and provide the Owner with a report that deternunes the feasibility of rehabilitating the existing sediment storage basin to accept additional sediment from the dredging of Basin 6 of Lake Decatur. This work includes project administration,project management, data collection, environmental and engineering studies,public involvement activities, and reclamation studies. '� Existing Site Phase II Desi� This work is based upon the Phase I feasibility study concluding that it is feasible for the existing basin to be rehabilitated.Phase II Design work includes project administration,project management,data gathering,environmental analysis,obtaining of necessary permits,preparation of construction lans s ecifications estimates of ro a 1 , , b b e costs re aration of land ac uisition documents reclamatio P P p ,p p q , n studies, public involvement activities, and assistance to Owner for letting and award of construction contract. New Site Phase I Studv This work consists of performing preliminary feasibility studies for siting new sediment storage site(s). The new site(s)would be used if it is determined to be more feasible than reusing the existing site or if the existing site cannot be rehabilitated.This work includes project administration,project management,data gathering,environmental and engineering studies,public involvement activities, and reclamation studies. Phase III Construction Activities T'his work includes providing technical assistance to the Owner in the selection and purchasing of dredging equipment and in the training of dredge operation personnel. It also includes providing construction engineering administration, observation and layout services during the construction phase of the project. All of the conditions outlined in City's Request For Proposal, Section II Consultant Reporting,paragraphs A through E pertaining to the report format,number of copies to be submitted, content of the report, and coordination of the project with the City will be met. Once that review and approval from the necessary governmental agencies is received in a reasonable time period,the engineering services will be completed in time for the City to be able to Advertise for and Process Bids for the sediment storage site construction from mid May 2001 to mid July 2001. 1