Okaloosa County BOCC — February 17, 2015 — SCSTO45 NLF--VZAInjectionExtract--FullyExecuted

BOARD OF COUNTY COMMISSIONERS AGENDA REQUEST DATE: May 15,2012 TO: Honorable Chairman and Members of the Board FROM: John Hofstad, Public Works Director SUBJECT: Niceville Landfill- Vadose Zone Aeration Operation and Reporting DISTRICT: ALL REQUESTING DEPARTMENT: Public Works STATEMENT OF ISSUE: SCS Engineers has developed a proposal to perform the Phase I Vadose Zone Aeration (VZA) Pilot Tests of the Niceville Landfill (NLF). The work outlined in this proposal represents the activities required to execute the Pilot Study Work Plan (PSWP) submitted to and approved by the Florida Department of Envirorunental Protection (FDEP) in October 2009. These activities represent a portion of the PSWP to be completed in FY2012. BACKGROUND & ANALYSIS: Remediation of the NLF chemical impacts has been occurring through natural processes for many years. However, natural attenuation of chemical impacts as quantified by site data collected over the past decade is not sufficient to meet FDEP cleanup goals and was subsequently determined insufficient by the FDEP. In 2007, the FDEP urged the County to address chemical impacts more aggressively. The County began to actively investigate treatment alternatives rather than pursuing traditional and expensive technologies suggested by the FDEP. The County teamed with the University of Florida (UF) with the concurrence of the FDEP to implement a Pilot Study to determine the feasibility of a promising new technology called Vadose Zone Aeration. A Pilot Study Work Plan was generated and presented to the FDEP. Since the approval of the plan, the County has constructed the VZA system infrastructure, performed the initial startup/shakedown of the system and reported baseline findings. The system is now ready for full scale operation .. Costs for the planning, construction and implementation of the VZA system has been addressed in the budget cycles for the past few years. It was originally anticipated that UF would play the lead role in all phases of the project. However, County staff determined that a significant cost savings could be realized if the study effort was conducted by our existing contractor. In the current proposal, the UF's lead researcher, Dr. Tim Townshend, will serve as a consultant throughout the duration of the VZA implementation and assist in the preparation of required reporting. The County will also share data generated by the project with UF. This cost represents the lion's share of the study costs. Once this phase is complete, an evaluation of the system performance will determine whether the VZA technology is appropriate for full scale system operation. OPTIONS: The proposed work represents a sequential execution of the FDEP approved Work Plan .. Page I of2 RECOMMENDATION: The proposed cost ofthe FY2012 portion of the VZA Pilot Test is $182,000. This cost is budgeted for FY2012 in account number 4301-549305. Staff recommends that the Board sign the attached proposal for SCS in the amount of$182,000. PREPARED BY:......,Ji;""""_f/_/<._.-_.?_-' _J:.r_-- - - Scott R. Henson Public Works Project Manager Pagc2of2  TASK ORDER AUTHORIZATION CONTRACTNUMBER: C=0~6~-1=3~53~-~PW~2~-l=2~1________________________ i- TASK ORDER County, Florida #'~ VZA Injection & Extraction Operations, Niceville Landfill, Okaloosa OFFERED BY CONSULTANT: SCS Engineers FIRM'S NAME K. Mark Tumlin, MBA SIGNATURE DATE Vice President TITLE RECOMMEND FOR APPROVAL (Dep~~ John Hofstad, Public Works TITLE TITLE Environmental Consultants 3298 Summit Boulevard 850 432·6211 and Contractors Suite 31-A