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- Monroe, Connecticut, USA - Case Study
Monroe, Connecticut, USA - Case Study
Courtesy of Ivey International Inc.
Monroe Facts:
- former heating oil terminal from the mid-1950's to the late 1970s
- No. 2 fuel oil was stored at the site
- Multiple releases occurred over time
- Site and surrounding area are wetlands, with the former terminal area elevated with fill material for commercial use
- Irregular fill consisting of sand, silt, gravel and boulders with some timbers and metal buried throughout the site
- Sensitive receptors are adjacent stream and down-gradient potable wells
- High vacuum (dual phase) extraction system in use at the site since late 1999
- Selective Phase Transfer Technology
- Monthly SPTT injections commenced In May 2002
Conclusions:
- Mass Recovery = Flow Rale x Concentration
- Mass Recovery (pounds per day) = gallons per minute (gpm) x mg/l X 0.012
- 3.785 l/gal x 1 lb/454,000 mg x 1440 minutes/day - 0.012
- Mass Recovery prior to the infection period is based on an average influent concentration of 0.75 mg/l
- 8 gpm x .075 mg/l x 0.012 - 0.072 lbs/day - 3.269 x 104 mg/day (prior to SPIT use)
- Mass Recovery during the Injection period is based on a concentration average calculated using the post injection peak concentrations of 3.07 mg/l
- 8 gpm x 3.07 mg/l x 0.012 = 0.29472 lbs/day = 13.38 x 104 mg/day (during SPTT use)
- Pre vs. post injection mass removal rates show an increase of 409.3%
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