Explanation
1. BACKGROUND:
A. Need. This legislation authorizes the Director of Public Utilities to modify the professional engineering services agreement with DLZ Ohio, Inc., for the Olentangy Scioto Interceptor Sewer (OSIS) - Downtown Odor Control Project. The DLZ Ohio, Inc. modification amount requested under this ordinance is $1,214,852.97. The contract with DLZ Ohio, Inc. was to evaluate odors emanating from sanitary/combined sewers in the downtown riverfront area, provide design services, preparation of bidding documents, and perform engineering services during construction for the odor control facilities.
The contract total including this modification is $1,444,502.23. The proposed contract modification replaces funds for tasks that were reallocated to include the OSIS Augmentation and Relief Sewer (OARS) project into the scope of work, evaluate additional alternatives, attend additional planning meetings with City representatives of other departments/divisions, for inclusion of landscape features for the two biofilter locations, prepare stormwater/floodplain mitigation for the Short St. site, prepare demolition drawings, perform environmental assessments of both bio filter sites including a Bureau of Underground Storage Tank Regulations (BUSTR) soil remediation/clean-up of the Short St. site. When the original project scope of services was developed in early 2003, the OARS project had not yet been identified. OARS was first proposed in the 2005 Wet Weather Management Plan as an augmentation sewer to the OSIS and would parallel it. In 2006 design funds were reallocated to include coordination of design with the OARS project.
Changes to the project scope and costs are a result of negotiations with Mayor's Office, Development Department and the Department of Public Service to address specific concerns at each biofilter site. The additional design services are not a result of oversight by the design engineer or by the Division of Sewera...
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