Agenda - 05-18-2010 - 4f - Laserfiche WebLink

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(� General Engineering and Environmental Management Services WRITE STREET LANDFILL tceginnmg in iaa,% nurc worked closely with City staff to develop a state mandated "transition plan" for the White Street Sanitary Landfill. The plan was developed to describe the remaining landfill operations at the current site as an approved disposal facility. Activities included the design and permitting of a major vertical expansion to the existing Phase II fill areas of the site to provide for disposal needs until January 1, 1998, when the transition would be made into a lined Subtitle D cell designated as Phase III. In addition to providing additional capacity, the expansion resulted in a more environmentally acceptable facility by reducing surface water infiltration. The design included a closure /post- closure plan for Phase II in accordance with Subtitle D regulations. HDR has worked with the City of Greensboro since 1994 to permit and construct the Phase If Subtitle D municipal solid waste unit and to optimize the facility capacity at the approximately 800 -acre White Street facility. HDR has been responsible for the development of technical documentation including a site study and construction permit application, as well as plans, specifications, operation plans, and cost estimates for the implementation of the project components. Work also included the preparation of bid documents, bid evaluation, submittal reviews, and construction inspection /quality assurance. In addition, HDR has prepared closure /post- closure plans for the existing facility, permitting for borrow areas, plans for HDR performed rigorous fate and erosion and sedimentation control, and other landfill monitoring services. The transport modeling at the White Street first 25 -acre Subtitle D cell was constructed in 1997 for $6.9 million, prior to the Landfill to gain NCDENR approval of a NCDENR January 1, 1998, deadline. The construction of an additional 14 -acre lower cost, more environmentally cell was completed in January 2001 at a cost of $3.2 million. Following that Protective alternate liner system. P ry 9 HDR provides operational support to project, a 13 -acre cell was completed in November 2004 at a cost of $2 million. the Greensboro Landfill, revievring all HDR prepared the bid documents and provided construction administration and facets of its operation on a quarterly construction quality assurance services for each project. The total 52 -acre basis. The landfill received the first landfill unit has been designed and constructed too operate as a potential "Ce "Certificate s of Exemplary Performance" 9 P P Issued by NCDENR. bioreactor. In 2000, HDR submitted an alternative liner demonstration for Phase III, Cells 2 and 3, to allow the use of a geosynthetic clay liner in the base liner preserving the City's limited soil resources. Cent %ffcafe of Even, p'aryPerformoire f In addition, HDR developed and implemented a Landfill Facility Operation Audit process in 2000. The audit, conducted semi - annually, reviews all facets of oY`` "t 5" "� "'0 fvv.aJww:...0 4 ae.pre!ww.F� as landfill operations including record keeping, safety, equipment maintenance,""M �m permit compliance, and operation efficiency. The audits resulted in an exemplary rating by NCDENR. The City of Greensboro was the first landfill to w receive this award from the state. In 2001, HDR prepared a Solid Waste . Management Study Update to a prior study prepared in 1996. The intent of both the original study and the update was to analyze waste management options available to the City to confirm the best long -term strategies. The Update considered resource recovery technologies including mass bum, refuse derived fuel (RDF), gasification, and MSW composting. Additionally, land disposal options were reviewed including expansion of the White Street Landfill; development of a new, in -county landfill; or out -of- county disposal. The findings of the report confirmed that, from an economic standpoint, continued disposal of MSW at White Street was the least cost option. However, due to the long Page 13 q