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1 Throughout the project, ECT has subcontracted the installation of monitoring, remediation and dewatering system wells, collection of soil samples using a Geoprobe, and the analysis of samples. Current subcontracting includes excavation of contaminated soils and transport to an approved disposal site. For items (contaminated soils) transported offsite during the remedial phase, the site supervisor is responsible for proper manifesting and obtaining any permits that may be necessary. All work has been completed in compliance with the ECT site-specific health and safety plan and the State QA/QC guidelines. Tasks have been completed at this site at Level D protection. ECT is also providing final engineering designs for the Depot Avenue reconstruction and construction oversight during the final remediation and restoration phases. The ultimate goal for the site is remediation, restoration, and conversion into a park that will treat stormwater and also provide a recreation hub to help revitalize the city's east side. oWater Resources As an integral part of the site restoration, ECT was tasked to design a regional stormwater park. ECT engineers performed a thorough inventory of downtown Gainesville to determine potential offsite areas for inclusion in the regional treatment system. Upon completion of the inventory ECT engineers developed a basin plan and model using EPA SWMM. The results of this plan demonstrated that the park would have the capacity to treat runoff from approximately 89 acres of downtown Gainesville, with runoff from 47 acres flowing to the park through the storm sewer system and runoff from the ' remaining 42 acres re-routed from the adjacent Sweetwater Branch Creek. The park itself will consist of a treatment train approach. The first step in the treatment train will be pretreatment provide by a 10- by 16-foot second generation baffle box. The second step in the treatment train process will be performed by two wet detention ponds in series. These wetland ponds ' are connected by a braided wetland stream that will provide additional water quality treatment. These ponds will be lined to prevent potential groundwater contamination from entering the ponds. Lastly, the water will flow through a preserved onsite wetland for the final step in the treatment train. $294,362 (to date) I • I 1 1 c %PROJECT PROFILE41111..111111111. O CIUSERMA.YGIAPPDATAIIACALLWCROSOFTWI'DOWSYTE.MPORARY LVTER.S'ET BLE5 CO.YT&YL.OUTLOOKIOZYSGJQXS U\ISL-PROJ.DOC-043012