Explanation
1. BACKGROUND: This legislation authorizes the Director of Public Utilities to modifiy (Mod#1) an existing engineering agreement with Black & Veatch Corporation for the Lockbourne Intermodal Subtrunk Air Quality Improvements project, CIP 650491-100005. As part of the Northern Pickaway Joint Economic Development District (JEDD) agreement the City of Columbus agreed to construct the sanitary sewer infrastructure necessary to serve the district. A majority of that area will be served via the 60-78” Lockbourne Intermodal Subtrunk Sewer (LIS) which is currently under design. During the design of this sub-trunk, a preliminary ventilation and odor control study conducted by HWS (Harvey W. Sorensen) in September of 2013 determined that air quality control would be required in order to prevent odor releases and pressurizing of the sanitary system. To date, the consultant has completed all tasks necessary. The construction plans are at the 95% stage. This includes all survey, site investigations, land acquisition and design services. The completion of the design and engineering services during construction will be completed in the future. This project is located in the Rickenbacker planning area.
1.1 Modification Information: Amount of additional funds $159,049.49
Initial Contract $576,425.09
This Modification (#1) $159,049.49
TOTAL $735,474.58
1.2 Reasons additional goods/services could not be foreseen:
There are multiple items that are required for this modification:
a.) Land acquisition was not originally anticipated as part of this project. After beginning detailed design and conducting the site layout, it was determined that the original site near shaft #4 was not large enough for the required equipment and it was also located in the flood plain. Black & Veatch was requested to perform the necessary services to acquire the new parcel, file all Council variance requests associated with t...
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