The purpose of this article is to reduce the ambient concentrations of toxic air contaminants on the Tulalip Indian Reservation and thereby prevent air pollution. The Department does adopt the following framework:
(1) 
The Department will continue to acquire and study scientific information on the effects of toxic air contaminants on the public health and control measures to mitigate such impacts.
(2) 
The ambient impact of emissions of toxic air contaminants from new and existing sources will be evaluated by comparing modeled or measured concentrations with the Acceptable Source Impact Levels (ASILs) adopted by the Board.
(3) 
The Best Available Control Technology (BACT) will be required for sources of toxic air contaminants to minimize the emissions and protect the health and welfare of the people of the Tulalip Indian Reservation.
(Ord. 96 § 9.01, 6-7-1997 (Res. 97-0118))
(1) 
“Acceptable source impact level (ASIL)”
means a concentration of a toxic air contaminant in the outdoor atmosphere in any area that does not have restricted or controlled public access that is used to evaluate the air quality impacts of a single source. There are three types of acceptable source impact levels: risk-based, threshold-based, and special. Concentrations for these three types of ASILs are established by the Board after public hearing and are listed in Appendix A, attached to the ordinance codified in this chapter.
(2) 
“Ampere-hours”
means the integral of electrical current applied to a plating or anodizing tank (amperes) over a period of time (hours).
(3) 
“Anti-mist additive”
means a chemical which reduces the hexavalent chromium emission rate from a tank.
(4) 
“Chromic acid anodizing”
means an electrolytic process by which a metal surface is converted to an oxide surface coating in a solution containing chromic acid.
(5) 
“Chromic acid plating”
means an electrolytic process by which chromium is deposited on a base metal surface.
(6) 
“Cold solvent cleaner” or “cold cleaner”
means a degreasing tank in which a solvent with a true vapor pressure greater than 4.2 kPa (0.6 psia) is not heated at or above the boiling point.
(7) 
“Collected for disposal”
means sealed in a leak-tight container while adequately wet.
(8) 
“Component”
means any equipment, pipe, structure member, or other item covered, coated, or manufactured from asbestos-containing material.
(9) 
“Controlled area”
means an area to which only certified asbestos workers or other persons authorized by the Tribes have access. For residential dwellings, the controlled area is the interior of the dwelling.
(10) 
“Ethylene oxide aerator”
means any equipment, space, or room in which air is used to remove residual ethylene oxide from sterilized materials.
(11) 
“Ethylene oxide sterilized”
means any chamber or related piece of equipment that uses ethylene oxide or an ethylene oxide mixture in any sterilization or fumigation process.
(12) 
“Freeboard ratio”
means the freeboard height (the distance from the top of the degreaser to the air/solvent vapor interface) divided by the width (lesser horizontal dimension) of the degreaser (measured at the top).
(13) 
“HEPA filter”
means a high efficiency particulate air filter found in respirators and vacuum systems capable of filtering 0.3 micrometer mean aerodynamic diameter particles with 99.97 percent efficiency.
(14) 
“Refrigerated freeboard chiller”
means a set of cooling coils situated above the condenser which operates at two degrees Celsius or less.
(15) 
“Toxic air contaminant (TAC)”
means any air contaminant listed in Appendix A, attached to the ordinance codified in this chapter, or listed in the Administrative Regulations of the United States of America in 40 CFR Part 372, Subpart D, as both now exist or are hereinafter amended, and both of which by this reference are incorporated herein and made a part hereof.
(16) 
“Vapor degreaser”
means a degreasing tank in which the solvent is heated at or above the boiling point.
(17) 
“Visible emissions”
means any emissions that are visually detectable without the aid of instruments. This term does not include condensed uncombined water vapor.
(Ord. 96 § 9.05, 6-7-1997 (Res. 97-0118))
Where toxic air contaminant emissions must be monitored pursuant to this regulation, they shall be measured using current Environmental Protection Agency procedures unless other procedures have been adopted by the Board or other procedures have been mutually agreed upon by the Control Officer and the owner or operator of the source.
(Ord. 96 § 9.07, 6-7-1997 (Res. 97-0118))
(1) 
This section applies to all sources of toxic air contaminants which are subject to Article III of this chapter.
(2) 
In addition to the reporting requirements of Article III of this chapter, the owner or operator of an air contaminant source shall make reports to the Department concerning the types and amounts of toxic air contaminants emitted and other relevant information needed to calculate such emissions.
(3) 
The owner or operator of an air contaminant source shall, upon request of the Department, provide such existing or reasonably available information as necessary to assist the Department to determine if the emissions of toxic air contaminants from the source may result in the exceedance of an ASIL contained in Appendix A, attached to the ordinance codified in this chapter.
(Ord. 96 § 9.09, 6-7-1997 (Res. 97-0118))