AQ-2017-008-RULE336-BOSREPORT-STAKEHOLDER COMMENTSANDRESPONSESEXCERPT-2021-08-11.PDF

Maricopa County — Formal (2021-09-01)

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Subject:
FW: Online Form Submittal: Citizen Comments
Attachments:
RadTech Public Comments Rule 336.pdf
From: noreply@civicplus.com <noreply@civicplus.com>  
Sent: Monday, May 3, 2021 2:00 PM 
To: PND Regulatory <PNDRegulatory@maricopa.gov>; Kathy Semder (COA) <Kathy.Semder@Maricopa.Gov>; Andy 
Linton (OBM) <Andy.Linton@Maricopa.Gov>; Bill Leal (OBM) <Bill.Leal@Maricopa.Gov>; Kathryn Garcia (OBM) 
<Kathryn.Garcia@Maricopa.Gov>; Blanca Caballero (ENV) <Blanca.Caballero@Maricopa.gov> 
Subject: Online Form Submittal: Citizen Comments 
Citizen Comments 
Each Regulatory Department is committed to providing opportunities for 
stakeholder input regarding the adoption and amendment of all regulatory 
requirements. Your input will be collected and forwarded to the appropriate 
department. You will receive a written response from the applicable department 
within two business days. We appreciate your comments and your time.
Case Number/Rule 
AQ-2017-008 Rule 336 Surface Coating Operations
Department 
Air Quality 
I would like to  
Other 
First Name 
Rita 
Last Name 
Loof 
Organization 
RadTech International, North America
City 
Bethesda 
Zip 
Field not completed.
Email 
rml93@verizon.net 
Phone Number 
909-240-0866
Phone Type 
Mobile 
Would you like someone to 
contact you? 
Yes 
Comments 
Please see attached letter
If applicable, attach 
supporting documentation 
associated with your 
comment. The only file 
types supported are MS 
Office and Adobe Acrobat. 
RadTech Public Comments Rule 336.pdf 
Email not displaying correctly? View it in your browser.
Stakeholder Comments and MCAQD Responses from May 3, 2021

Mr. Greg Verkamp 
Planning Supervisor 
Maricopa County Air Quality Department 
3800 N. Central Avenue, Suite 1400 | Phoenix, AZ 85012 
May 3rd, 2021 
Re:  Public Comments Rule 336—Surface Coating Operations 
RadTech is pleased to comment on Maricopa County’s proposed amendments to Rule 336 --
Surface Coating Operations. 
Introducing RadTech and UV/EB/LED 
RadTech International is the trade association for the Ultraviolet/ Electron Beam/Light Emitting 
Diode (UV/EB/LED) industry.  The organization represents over 800 members nationwide 
involved in a myriad of markets ranging from solar panel manufacturing to finger nail polish.  
Unlike conventional inks and coatings, UV/EB/LED products do not evaporate.  Instead, they are 
specifically formulated to react to UV light or a beam of electrons.  The nature of the process is 
such that virtually no Volatile Organic Compounds (VOCs) are generated. The materials are 
generally high viscosity and thus there are no regulatory concerns with generation of particulate 
matter from spraying.  Additionally, UV/EB processes are electric and thus do not produce 
combustion contaminants such as NOx, SOx and Greenhouse Gases. 
The South Coast Air Quality Management District has some of the most stringent air quality 
regulations in the nation. In many of its rulemakings, the agency has recognized the 
sustainability advantages, including energy efficiency, of ultraviolet and electron beam curing 
technology.  SCAQMD provides incentives to companies who convert to UV/EB through 
exemptions from permitting and recordkeeping. The agency recognized UV/EB as Best 
Available Control Technology for many industry sectors and the technology has recently been 
included in the Statewide BACT Clearinghouse for the California Air Resources Board. 
UV/EB technology meets the regulatory definition of “super-compliant” in the SCAQMD which 
applies to coatings with a Volatile Organic Compound (VOC) content of less than 50 grams per 
liter.  RadTech holds a seat on the South Coast Air Quality Management Plan Advisory 
Committee.  Our Association provides input to the agency on how to achieve clean air goals and 
implementation of UV/EB is one strategy which has been included in the Air Quality 
Management Plan. The most recent AQMP now includes UV/EB as control strategy. According

to SCAQMD findings: “These programs may also provide manufacturers with incentives to 
accelerate the deployment of cleaner technologies.  Such an example is the use of energy-curing 
technologies which includes ultraviolet light (UV), electron beam (EB), heat and light emitting 
diode (LED) cured coatings. 
The California State Senate has adopted a resolution recognizing the many benefits of ultraviolet 
(UV) and electron beam (EB) technologies and the contributions of RadTech. The proclamation 
acknowledges the “invaluable” contributions made by RadTech to the State of California and 
beyond, and cites the Association’s ideals of community service. It commends RadTech for its 
“outstanding commitment to improving the environment and economy through its programs.” 
The Environmental Protection Agency has classified UV/EB technology as Lowest Achievable 
Emission Rate. The EPA Control Techniques Guidelines documents state: “This technology is 
gaining greater acceptance and, where applicable, achieves a near 100 percent reduction of VOC 
emissions”. 
With UV/EB technology, facilities can achieve emission reductions above and beyond those 
required by even the most stringent of regulations. There is no need to install air pollution 
control devices which may emit combustion contaminants such as Nitrogen Oxides or Sulfur 
Oxides. The products do not contain Toxic Air Contaminants and have no secondary adverse 
impacts such as emissions of greenhouse gases.  
Requested Proposed Rule Language Changes 
RadTecb believes that Rule 336 presents an opportunity for Maricopa County to achieve 
voluntary emission reductions above and beyond those presently required in the rule, through 
regulatory flexibility that will encourage conversion to UV/EB/LED.   
Request for Exemption 
Our materials are typically well below 50 grams/liter in VOC content which is minimal 
compared to the proposed limits.  We respectfully request that UV/EB/LED materials be 
exempted from the rule requirements.  An exemption would be an incentive for businesses to 
voluntarily choose UV/EB/LED technology resulting in additional emission reductions for 
Maricopa County.   
Recordkeeping requirements are burdensome on businesses and in the case of UV/EB/LED 
operations, are not crucial because the materials are well below the rule limits.  Exempting 
energy curable materials from overly prescriptive recordkeeping requirements will alleviate 
regulatory burdens on the Maricopa County business community and benefit air quality.  
Definition 
We would very much appreciate the inclusion of a definition for energy curable materials in the 
rule.  We propose a definition like the one in SCAQMD rules: 
ENERGY CURABLE MATERIALS are single component reactive products that cure upon 
exposure to visible-light, ultraviolet light, or to an electron beam.

Test Method 
The Environmental Protection Agency and the SCAQMD have long recognized that EPA 
Method 24 is not suitable for thin film UV/EB/LED Materials.  Thus, RadTech urges Maricopa 
County to include ASTM D7767-11 as suitable test method for UV/EB/LED products subject to 
Rule 336.  We propose the following language:  
The VOC content of thin film Energy Curable Adhesives and Sealants may be determined by 
manufacturers using ASTM Test Method 7767 Standard Test Method to Measure Volatiles from 
Radiation Curable Acrylate Monomers, Oligomers, and Blends and Thin Coatings Made from 
Them. 
Transfer Efficiency 
UV/EB/LED products have higher viscosities than conventional solvent products.  The rationale 
behind transfer efficiency requirements is to control VOC emissions that can take place during 
spraying operations.  But, given the fact that UV/EB/LED materials do not have emissions like 
conventional solvent processes, facilities should not be required to the same level of regulation 
for transfer efficiency purposes. We urge Maricopa County to exempt UV/EB/LED materials 
with viscosities of 650 centipoise or above, from the transfer efficiency requirements of the rule. 
UV/EB materials not only meet, but far exceed any proposed rule requirements and any added 
flexibility to companies that choose these pollution preventive processes will encourage 
voluntary emission reductions thereby furthering the County’s mission. 
The RadTech Association looks forward to working with Maricopa County on this rulemaking 
and would gladly provide any additional information your staff may need. 
Sincerely, 
Rita M. Loof 
Director, Environmental Affairs

Comment #2: 
Our materials are typically well below 50 grams/liter in VOC content which is minimal compared to 
the proposed limits. We respectfully request that UV/EB/LED materials be exempted from the rule 
requirements. An exemption would be an incentive for businesses to voluntarily choose 
UV/EB/LED technology resulting in additional emission reductions for Maricopa County. 
Recordkeeping requirements are burdensome on businesses and in the case of UV/EB/LED 
operations, are not crucial because the materials are well below the rule limits. Exempting energy 
curable materials from overly prescriptive recordkeeping requirements will alleviate regulatory 
burdens on the Maricopa County business community and benefit air quality. 
Response #2: 
Rule 336 currently includes an exemption for coating products that have a VOC content, minus 
exempt compounds, of less than 0.15lb VOC/gal (18g/L), and this exemption (found in Section 
102.4 of the draft rule) will be retained with the current rulemaking. Also, there is no permitting 
requirement in Maricopa County for facilities that emit any regulated air pollutant in an amount less 
than the permitting thresholds listed in Rule 200, Section 303.1 (for VOCs, the permitting threshold 
is 0.5 tons per year). These exemptions are in place to encourage businesses to adopt products and 
practices which limit impacts on air quality. 
In addition, Rule 336 was conditionally approved as part of the Arizona State Implementation Plan 
(SIP) earlier this year. Any relaxation of the provisions in the rule may be considered backsliding, 
which may jeopardize the full approval of the Rule 336 into the SIP and potentially lead to federal 
highway and offset sanctions for Maricopa County further down the road. 
Comment #3: 
We would very much appreciate the inclusion of a definition for energy curable materials in the rule. 
We propose a definition like the one in SCAQMD rules: 
ENERGY CURABLE MATERIALS are single component reactive products that cure upon 
exposure to visible-light, ultraviolet light, or to an electron beam. 
Response #3: 
Thank you for providing the MCAQD with a good working definition for energy curable materials. 
However, a definition is not necessary since the MCAQD is not including any additional provisions 
regarding these materials into this version of Rule 336. 
Comment #4: 
The Environmental Protection Agency and the SCAQMD have long recognized that EPA Method 
24 is not suitable for thin film UV/EB/LED Materials. Thus, [our organization] urges Maricopa 
County to include ASTM D7767-11 as suitable test method for UV/EB/LED products subject to 
Rule 336. We propose the following language: The VOC content of thin film Energy Curable 
Adhesives and Sealants may be determined by manufacturers using ASTM Test Method 7767 
Standard Test Method to Measure Volatiles from Radiation Curable Acrylate Monomers, Oligomers, 
and Blends and Thin Coatings Made from Them. 
Response #4: 
Since ASTM D7767-11 is not currently an EPA-approved test method, the MCAQD cannot include 
it in Rule 336. Adding a test method that is not EPA-approved to this rule jeopardizes EPA’s 
approval of Rule 336 into the SIP. However, Section 503.2 of the rule does allow for the use of 
alternative EPA-approved test methods. If ASTM D7767-11 is approved by the EPA in the future, 
then it can be considered as a suitable test method. 
Excerpt from Report to the Board of Supervisors
C-85-22-060-X-01
Note: Comment #1 submitted by a different stakeholder

Comment #5: 
UV/EB/LED products have higher viscosities than conventional solvent products. The rationale 
behind transfer efficiency requirements is to control VOC emissions that can take place during 
spraying operations. But, given the fact that UV/EB/LED materials do not have emissions like 
conventional solvent processes, facilities should not be required to the same level of regulation for 
transfer efficiency purposes. We urge Maricopa County to exempt UV/EB/LED materials with 
viscosities of 650 centipoise or above, from the transfer efficiency requirements of the rule. UV/EB 
materials not only meet, but far exceed any proposed rule requirements and any added flexibility to 
companies that choose these pollution preventive processes will encourage voluntary emission 
reductions thereby furthering the County’s mission. 
Response #5: 
The MCAQD conducted research on facilities within Maricopa County that are currently using 
energy curable coating materials. We found these facilities are able to comply with the application 
methods listed in Section 302. As such, there appears to be no operational need to revise the transfer 
efficiency requirements of Rule 336. Also, in order to exempt any new materials from the 
application methods listed in Section 302, the MCAQD would have to submit a 110(l) 
demonstration to the EPA showing such an exemption would not interfere with any applicable 
requirement concerning attainment and reasonable further progress, or any other applicable 
requirement of the Clean Air Act. It is not clear if the EPA would approve such a demonstration 
and, if it was not approved, the added exemption could be seen as a relaxation of the rule. As 
mentioned earlier, any relaxation of the provisions of the rule could jeopardize the approval of Rule 
336 into the Arizona SIP.