PROJECT OVERVIEW

Heavily impacted river sediment was dredged from areas along the Ohio River and barged to a processing facility located in close proximity to several residences.

The processing facility contractor employed the use of a wireless organics vapor monitoring network to measure the effectiveness of active on-site odor control misting and foam dust suppression systems. Vapor concentrations were monitored and recorded. Alarms were transmitted in real time to on-site personnel.

TECHNICAL HIGHLIGHTS

Direct-read, real-time continuous monitoring capable of PPB-level detection were housed in NEMA4- rated enclosures and powered by standalone solar arrays. Three locations were chosen for static monitoring on the perimeter of the active work area. A local area network was confi gured so data could be transmitted from the devices and stored to a dedicated laptop used at the project site.

Simultaneous Suma Canister samples were collected at three separate locations along the same perimeter for analytical comparison.

KEY OUTCOMES

The effectiveness of the on-site odor controls were demonstrated to the oversight representative, who then communicated these results to local stakeholders. A continuous record of on-site air monitoring data was incorporated into the project documentation report. Minimal facility downtime was reported by the contractor and fears among the nearby residents were alleviated.