Summary

This document constitutes a Task Assignment Notification Change Order Form and supporting documentation for DEP Contract No. HW559, administered by the Florida Department of Environmental Protection (FDEP) Brownfields Program. The primary contractor is AMEC Environment & Infrastructure, Inc., represented by Ron White, with DEP Contract Manager Justin Cross overseeing the project at the Former Colt's Station site in Gilchrist County, Florida.

The change order modifies costs for underground and aboveground storage tank (UST/AST) removal and closure activities. The modification reduces costs for Guardian Fueling Technologies' UST/AST removal activities by $2,105.64 (including handling costs) due to decreased excavation volumes and dewatering requirements, while reducing Probe Domain costs by $320.00 for micro-well material procurement. Conversely, costs increase by $2,626.00 for Advanced Environmental Laboratory to conduct additional soil sampling at 24-hour turnaround time and removal of two groundwater samples. Additional labor costs of $1,528.47 (plus markup) compensate AMEC personnel for 24 hours of onsite work to complete tank closure activities including washing and flushing of four USTs and three ASTs. The net change results in a task amount increase of $1,882.07, bringing the total task cost with all change orders to $73,735.68. Final deliverables include a Draft Removal Report (due 6/1/2015) and Final Removal Report including FWC letter report (due 6/30/2015). All signatures were executed on June 22-23, 2015.