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“Quanta Odor Update”

· Debris was cleared on the main Quanta property in the southwest (near the Pier 115 sign and sidewalk) and the northwest (along the sidewalk/entrance to City Place). Both of these areas are located directly along the sidewalk. Posi-shell was applied to disturbed areas at the end of each day and liberally applied Friday before departure from the sites.

· Conditions at the site have been wet and muddy which can hinder the effectiveness of some of the odor control materials as they are broken down more quickly. The ongoing freeze/thaw conditions can also affect how long the odor suppressant materials were effective.

As a result of this, these are the actions we are taking to address this issue:

· Increase use of Portland cement within Posi-shell mix –To help the Posi-shell set up faster, the team is evaluating the effectiveness of adding Portland cement to the Posi-shell spray.

· Begin use of Bio-Solve – Bio-Solve is an additional odor suppressant that is being tested in addition to a non-toxic foam and Posi-shell. Bio-solve forms an emulsion, locking vapors and contaminants in the soil in areas that are being actively worked on. Bio-Solve is not as durable or long lasting as Posi-shell; however, it may provide greater immediate odor reduction.

· Cover disturbed areas with plastic sheeting on Fridays – The Posi-shell has been effective at controlling odors until the recent ongoing freeze / thaw conditions. Therefore, the use of plastic sheeting to cover stockpiles and disturbed areas had been minimized. If site conditions are appropriate from a safety and accessibility perspective, plastic sheeting will be used to cover stockpiles and disturbed areas on Friday afternoons before leaving the site. These areas will also be sprayed with odor suppressant before being covered.