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<br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />} <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br /> <br />\ <br />, <br />\ <br />, <br />\ <br />, <br /> <br />LANGAN <br /> <br />;~<. " <br />i;~ <br /> <br />-"'~ <br />,f< <br />~; <br /> <br /> <br />ii~ <br />1.,'9. <br /> <br />~1!" <br /> <br />~ <br /> <br /> <br />~ -.::: ,.<: <br /> <br />SERVICES: <br /> <br />. Design/bui/d Project <br />. Gas Plant Remediation <br />. Lanc{fill Engineering and Closure <br />. Stormll'ater Design <br />. Geotechnica/ Studies <br />. Construction Inspection <br /> <br />LOCATION: <br /> <br />Tallahassee. Florida <br /> <br />CLIENT: <br /> <br />WRS Infrastructure & Environment, Inc. <br /> <br />It is one of the most historically significant locations in Tallahassee, not to mention the entire state of Florida, and the process to return <br />it to its citizens as a beautiful urban recreation site is now undelway. The City of Tallahassee's Cascades Park Cleanup project has been <br />completed. This is a critically impOt1ant step that will help transition the site into a multi-use downtown park. <br /> <br />Langan was a sub-contractor to WRS Infrastructure & Environment, Inc. for design, engineering and oversight services for the $8M <br />Cascades Park Remediation Project, a coal gasification plant and landfill Superfund site that has been remediated by the City of <br />Tallahassee under an Administration Order of Consent with USEPA. <br /> <br />Langan prepared the Removal Action Work Plan which received USEPA approval in a one month time period. Design specifications <br />and drawings were developed for the removal of in excess of 80,000 cubic yards of contaminated soil, and the construction of a low <br />permeability liner within the excavated area for future use as a stormwater management facility at the fortner plant site. <br /> <br />At the landfill site, Langan conducted geotechnical investigations and developed engineering specifications and drawings for the removal <br />action which involves sediment removal from an adjacent creek, installation of a 400 linear foot box culvert within the creek, installation <br />of a geosynthetie clay liner (GCL) cap on the landfill surface, and installation of a GCL along the landfill embankment, totaling 5,720 <br />square yards. The box culvert was designed to buttress the steep landfill slope adjacent to the creek. <br /> <br />Langan also provided engineering oversight during the earthwork and liner installation at the former plant site, and provided oversight <br />during the box culvert and GCL installation at the landfill site. <br /> <br /> <br /> <br />~lm[[i'J!l:~;:..!j".!I'l!l!'l!. <br /> <br />49~ <br />