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1	DEQ art glass permanent rulemaking 2016
2	Public comment points to respond to
4	PointID	Summary of Comment	DEQ response	Notes	Response Complete?
5	1	DEQ should give more compliance time and flexibility to CAGMs	DEQ is confident that the requirements and deadlines in the proposed rules are achievable by all affected facilities. DEQ is also committed to work with all affected companies to issue necessary emission control device approvals and test plan approvals as quickly as possible. We have revised the rule to reduce source testing costs and uncertainties by replacing the 99% capture efficiency standard with a standard at the baghouse outlet. In addition, DEQ added a pathway for facilities to apply for an extension of time to comply in 340-244-9005.
6	2	DEQ should consider the economic effect on glass artists. DEQ should not shut down the glass industry.	The proposed permanent rules are intended to ensure that CAGMs operate in a way that is protective of human health and the environment. We are confident that facilities can meet these requirements while continuing to serve their customers.
7	3	This rule is only regulating CAGMs, but other facilities may be to blame for metals pollution in these areas.
8	4	DEQ should apply this rule statewide instead of only in the Portland area.	Based on comments received, DEQ is proposing that the permanent rule apply statewide. While there are no known air quality problems related to CAGM operations outside the Portland area, applying the rule statewide gives all Oregonians protections from current and potential future CAGM emissions and helps provide a “level playing field” for CAGMs that install the controls necessary to comply.
9	5	DEQ should lower the applicability threshold of the rule so that all facilities making at least 500 lbs per year of HAP-containing glass are regulated.
10	6	The rule should regulate all heavy metals or all hazardous air pollutants (HAP), not just arsenic, cadmium, chromium, lead, manganese and nickel.
11	7	The temporary rule requires CAGMs to show that their baghouses capture 99.0% of incoming particulate matter. Baghouses can capture more than that, and DEQ should require them to demonstrate that they are capturing 99.9%.	DEQ agrees that baghouses are capable of capture efficiencies higher than the 99.0% standard in the temporary rule. DEQ has learned that there are practical problems with demonstrating capture efficiency with a source test, particularly for the smaller (Tier 1) facilities. To show 99.0% (or 99.9%) capture efficiency with a source test, a facility needs to test the inlet and the outlet of the baghouse. The inlet concentration would need to be at least 100x (or 1,000x) of the outlet concentration. Chemical tests are not accurate below a certain threshold (the method reporting limit, MRL) and if a reading is below the MRL then the sample concentration is assumed to be the MRL. To show 99.0% capture efficiency, the source test must be run until the inlet sample is at least 100x the MRL. Unfortunately that takes a very long time, especially at Tier 1 facilities (~ one week per test run), because their baghouse systems pull in a lot of air from the room and are very dilute. Long test runs are expensive and prone to error. One facility, Northstar, reported that they were quoted a cost of $350k for a source test, which may be more than the cost of buying and installing a baghouse. DEQ is proposing a rule revision so that facilities will have to meet an emissions standard of 0.005 gr/dscf (grains of particulate per dry standard cubic foot of air) rather than a baghouse capture efficiency standard. This is a standard type of emissions testing for other facility types and will reduce source testing costs.	If requiring baghouse leak detection, mention that here.
12	8	DEQ should modify the health benchmarks in the rule to make them more protective, especially the 36 ng/m3 daily average benchmark for hexavalent chromium.	DEQ has partnered with the Oregon Health Authority (OHA) to rely on their expertise in estimating environmental risks and setting health benchmarks. Because chronic exposure to pollutants can cause harm through different mechanisms than intense, acute exposures, OHA recommended that DEQ incorporate an annual and 24 hour limit on chromium emissions from Tier 2 facilities. Facilities are bound by both limits, so the most stringent is the one that matters. As you noted, exceeding the 36 ng/m3 acute (24 hour) limit for one day would also violate the chronic (annual) limit of 0.08 ng/m3. This is not an error, but it is true that the annual limit is more stringent and would be binding. DEQ is proposing to change the 36 ng/m3 limit based on new information submitted by OHA. OHA recommended that DEQ revise the 24 hour health benchmark for hexavalent chromium to 5 ng/m3. 5 ng/m3 is the intermediate minimal risk level (MRL) established by the Agency for Toxic Substances and Disease Registry (ATSDR). OHA is beginning a process to review and revise other health benchmarks. If OHA revises other benchmarks as part of that process, the updated data could be incorporated into the art glass rule in a future rulemaking.
13	9	This rule should be changed to regulate all glass factories (such as Owens Brockaway and General Glass), not just CAGMs	Large scale bottle manufacturers are already subject to regulations that require control devices and reductions of emissions through technology based standards. This proposed rule is applicable to a different industry with different emissions and impacts. Additional health risk impacts from large bottle manufacturers may also be addressed as part of the permanent rulemaking mentioned in other comment responses.
14	10	This rule's requirements are technology-based, but the rule restrictions should be health-based	DEQ has begun the Cleaner Air Oregon rulemaking process to develop a statewide risk-based air toxics permitting program that will cover many industry types. There will be many opportunities for public input and participation in that process. The approach proposed in the art glass rule is a combination of risk and technology based approaches. It requires emission control devices to reduce the rate at which CAGMs emit metals, which is a technology-based requirement. It also incorporates elements of a risk-based program by establishing health based acceptable source impact levels for chrome usage at Tier 2 facilities. The proposed rules also contain elements of a risk-based program in allowing Tier 1 CAGMs to demonstrate that their emissions of metals are not above the acceptable levels.	Remove reference to health-based pathway for Tier 1s if we remove that from the rule.
15	11	DEQ should provide translation for non-English speakers and specific outreach to communities of color and low-income communities.	DEQ can provide language translation for meetings or written materials upon request. Please contact DEQ and let us know if there is a specific community or language group that wants to request this.
16	12	DEQ should make air emissions permits publicly available through its database	Making air permit records accessible to the public via DEQ’s website is a good suggestion but outside the scope of this rulemaking process.
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