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Dover Former Manufactured Gas Plant Site Remediation MT's site soil characterization determined that approximately one-half of the soils were RCRA hazardous, and needed to be stabilized before shipping off-site. To handle all soil pre-treatment activities, MT constructed a temporary on-site building and complex carbon bed air handling system. Maxymillian often uses buildings as storage and decant areas, as well as odor control for highly contaminated excavations. Following excavation, MT stockpiled soils and pre-treated them by intermixing either imported clean sandy backfill, or on-site treated material. The soil was then formally sampled to verify that it was non-hazardous and met disposal facility requirements. MT implemented materials handling techniques that minimized the quantity of clean pre-treatment material used. This ultimately limited the amount of soil requiring off-site disposal. MT excavated and disposed of 35,000 tons of MGP soils and debris. For site restoration activities, MT established a drainage system, an asphalt cap, and landscaped. The drainage system consisted of two drainage swales and two box culverts; one beneath the railroad tracks and the other beneath the road. MT decommissioned and temporarily removed a segment of the railroad tracks to install the box culvert, then restored the tracks to their former state. MT then installed an asphalt cap and plantings to complete site restoration.
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above: Foam application during MGP excavation. below: Temporary building with air handling system. 
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