Fiscal Note
The total additional cost is estimated to be $135,175. $118,375 of this cost would be funded through a transfer of available funds from the Olin Landfill capital account (810584). The remaining $16,800 would come the Underground Storage Tanks capital account (810374).
Title
Amending the 2007 Parks Capital Budget to Fund Additional Costs Related to the Construction of the New Maintenance Facility at Goodman Field. (13th AD)
Body
The Miron Construction Company, under Public Works Contract #5992, is currently building a new maintenance facility for the Parks Division at Goodman Field. Petroleum contaminated soil was recently encountered in an area beneath the existing parking lot while excavating the foundation for the new building. Although the contamination was anticipated, its intensity and horizontal extent was much greater than expected.
The contamination is the result of two different leaking underground storage tanks that were part of the vehicle fueling station previously located at the site. The tanks, which were removed in 1995, were subsequently replaced with aboveground storage tanks. A consulting firm, under the direction of the WI Department of Natural Resources and the WI Department of Commerce, conducted a subsurface investigation and remedial options analysis for the site.
The results of the studies indicated that active remediation was neither necessary nor applicable at this site. The site was "closed" in 2002 with a Deed Notification (also known as a Notice of Contamination to Property) requiring the asphalt parking lot to be maintained and utilized as a barrier cap for the contamination. At the time closure was granted for this site it was not anticipated that excavation would be required as part of this facility's renovation and expansion. In addition, the contamination appeared to relatively low level and limited in its extent. Unfortunately, the contamination proved to be more significant than thought.
In October of 2006, Miron excavated the petroleum contaminated soil from beneath the new building footprint and transported it to the Madison Prairie Landfill for bioremediation. To insure that the building remain vapor free, a sub grade venting system and membrane were added to the building's design. The proposed venting system and the extra-required excavation will be conducted as a change order to Contract #5922.
The site is also within the area of the City's Olin Landfill, a landfill that accepted municipal waste until 1977. Solid waste was unexpectedly encountered in several different areas of the site when excavating for utilities. Excess waste not placed back in the excavations was transported by Miron to the Dane County Landfill for disposal.
NOW, THEREFORE, BE IT RESOLVED THAT:
The 2007 Parks Division Capital Budget be amended to increase budget authority in project 16 as follows:
Parks - Building CB60-58310-810557 $135,175
Landfill CB60-79442-810557 ($118,375)
Transfer In from Equipment CB60-79443-810557 ($ 16,800)