March 21, 2017
Ongoing monitoring at Bullseye Glass shows sustained emissions reductions
Stack testing will confirm compliance with federal and state air regulations, assess emissions
PORTLAND, OR— Recent air monitoring results continue to show that Bullseye Glass Co.’s baghouse control systems are operating effectively, and Department of Environmental Quality officials expect this month’s testing on the new baghouse will add to that assurance.
Stack testing will begin March 26 and run for three days under DEQ oversight. The testing is required to ensure the baghouse device is reducing emitted dusts, called “particulate matter.” Bullseye will also test to assess the level of reductions of metals, including chromium. Testing results will be available within 60 days after tests are completed.
Ongoing air monitoring around Bullseye, which has now completed a full year of testing, continues to confirm much reduced levels of metals in the air around the southeast Portland glass manufacture.
The company installed the baghouse in September 2016 and resumed using metals (except chromium) shortly thereafter. This system controls the emissions of all the company’s furnaces that use toxic metals. Since the baghouse was installed, average concentrations of these metals have dropped 98 percent from 2015 levels, and are at or below applicable benchmarks or background levels.
With a full year of testing that showed consistently reduced emissions levels, DEQ plans to discontinue air monitoring around the company after the source tests in March.
DEQ Deputy Director Leah Feldon, who coordinated the effort last year to enhance regulations for art glass manufacturers and get the baghouse system installed, said, “While the events of last year presented a very challenging situation for all involved, DEQ took quick action to curb emissions and set up new standards for this industry that resulted in emissions at levels similar to anywhere else in the city while allowing these companies to continue their business practices.”
Source test details
The source test analyzes emissions at the exhaust stack, not at remote monitors like those located at the Children’s Creative Learning Center daycare. The tests will measure particulate matter before and after emissions go through the baghouse. Particulate matter is a complex mixture of extremely small particles and dust, as well as small amounts of uncondensed gasses. The testing will also measure concentrations of hazardous metals that are emitted from the baghouse (a very small amount can pass through the filtration systems).
Additionally, the tests also will measure chromium emitted from the baghouse. Any detected chromium is assumed by DEQ to be in the hexavalent form. This is because past testing showed that virtually all emitted chromium is in the hexavalent form. Because of the toxicity of hexavalent chromium, DEQ requires this testing to set use limits so the resulting emissions are safe. Test results should be available about 60 days after tests are completed.
Termination of Mutual Agreement and Final Order with Uroboros Glass
DEQ received a request for termination of the Mutual Agreement and Final Order with Uroboros Glass on Feb. 14, 2017, stating the company has stopped using all regulated glassmaking hazardous air pollutants (see Oregon Administrative Rule 340-244-9010(11)). DEQ terminated the agreement on March 20, 2017.
Drywell and groundwater testing continues
Drywells are used by businesses to percolate rainwater into the ground. A DEQ inspection of a drywell used by Bullseye found significant accumulation of sediments. These sediments were caused by furnace dust on the roof that rain washed into the drywell. Testing performed by Bullseye detected significant concentrations of metals in these sediments. The drywell was immediately cleaned, rinsed and retested. Retesting showed the drywell is clean.
Additional sampling has shown contamination under the drywell, including impacts to groundwater. DEQ will continue to investigate to determine the full extent of impacts, whether there are violations of groundwater protection rules and to develop a cleanup plan. There are no wells in the area around Bullseye that would be affected by this contamination.
What’s next? How can I stay involved?
Test results from the air and soil investigations will be posted on DEQ’s website as they are received and reviewed. Later this year Bullseye will submit a revised permit application to DEQ, which will issue a proposed revised permit for public review and comment in late 2017.
In addition, OHA will complete its draft Public Health Assessment for the area around the Bullseye facility. The draft assessment will be release for public comment in mid-2017.
For more information about air quality work and concerns, visit:
For view air monitoring data around the Bullseye facility, visit:
For information about the drywell cleanup, visit:
For information about the public health assessment, visit: