08-1926 Change Order No. 1 to Lake Concord Stomrwater Park

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CDM Scope of Work Task 5 - Stormwater Subtask 5.1 - Stonnwater Pond Reuse Calculatious The ENGINEER will prepare calculations for the proposed storm water reuse pond (i.e., the existing wet detention pond on Triplet Lake Drive). Previously the ENGINEER's original scope of services (dated September 24, 2007) did not include for the design of such a system. The ENGINEER will prepare calculations that are consistent with SJRWMD's design criteria and guidelines for stormwater reuse systems (Chapter 40C-42, F.A.C.). The ENGINEER will also modify the design drawings that show a clear intent of the stormwater reuse system as requested by the SJRWMD in the RAI dated July 15, 2008. It is assumed that by using the Triplet lake stormwater pond for reuse, it will not require an additional permit modification by the SJRWMD. If the SJRWMD does require an additional permit modification for this system, this will be considered additional services. Subtask 5.2 - FDOT Drainage Conllection Penn it The ENGINEER will prepare the necessary materials to obtain a FDOT drainage connection permit which is required for modifying the outfall pipe on US 17-92 with the baffle box. As required by FDOT, the ENGINEER will simulate the mean annual, 25-yrj24-hr, and 100-yrj24-hr design storm events using the updated ICPR model developed under the original scope of services (dated September 24, 2007) and provide those results as part of the submittal package. Should FDOT require additional storm event simulations, this will constitute additional services. Task 6 - Wetland Impacts Subtask 6.1 - Coordinatioll The ENGINEER will coordinate with the CITY's environmental consultant to address the SJRWMD's concerns outlined in the RAI dated July 15, 2008 regarding wetland impacts. As directed by the CITY, the original scope of services (dated September 24, 2007) included a limited mitigation plan which assumed that impacts to wetlands would require a planting plan of new wetland plants and removal of exotic species along the shoreline of the study area. The SJRWMD has indicated that a vegetation plan alone may not be sufficient to obtain an ERP. Based on coordination with the CITY's environmental consultant, the ENGINEER will modify the design drawings accordingly to address the SJRWMD's concerns as well as to provide for mitigation where necessary. Task 7 - Additional Drawings Review Subtask 7.1 -100% Revised Desigll Drawings The ENGINEER will prepare 100 percent design drawings that address the CITY's 90 percent review comments dated August 12, 2008 as well as the SJRWMD's comments outlined in the RAI dated July 15, 2008. The ENGINEER will attend one review meeting with designated CITY personnel for review and comment. Review comments received from the CITY will be incorporated into revised 100 percent construction documents as mutually agreed upon by the CITY and ENGINEER. The ENGINEER will prepare a final opinion of the probable construction cost estimate at the revised 100% milestone. This will be in place of the Engineer's Opinion of Probable S:\OOOOIBWMNElICasselberrylSoopearld Budgel\Scope_OaSepOB docx 4