Oregon Administrative Rules › Chapter 340 - DEPARTMENT OF ENVIRONMENTAL QUALITY › Division 234 - EMISSION STANDARDS FOR WOOD PRODUCTS INDUSTRIES › Section 340-234-0010 - Definitions

Current through Register Vol. 63, No. 7, July 1, 2024
The definitions in OAR 340-200-0020, 340-204-0010  and this rule
				apply to this division. If the same term is defined in this rule and
				340-200-0020  or 340-204-0010, the definition in this rule applies to this
				division.
(1) "Baseline emissions
			 rate" means a source's actual emissions rate during the baseline period, as
			 defined in OAR 340-200-0020, expressed as pounds of emissions per thousand
			 square feet of finished product, on a 1/8" basis.
(2) "BLS" means black liquor solids, dry
			 weight.
(3) "Continuous monitoring"
			 means instrumental sampling of a gas stream on a continuous basis, excluding
			 periods of calibration.
(4) "Daily
			 arithmetic average" means the average concentration over the twenty-four hour
			 period in a calendar day, as determined by continuous monitoring equipment or
			 reference method testing. Determinations based on EPA reference methods using
			 the DEQ Source Sampling Manual consist of three separate consecutive runs
			 having a minimum sampling time of sixty minutes each and a maximum sampling
			 time of eight hours each. [NOTE: DEQ's Source Sampling Manual is published with
			 OAR 340-200-0035; EPA Reference Methods are found at Appendix A to  40 C.F.R.
			 Part 60 .] The three values for concentration (ppm or grains/dscf) are averaged
			 and expressed as the daily arithmetic average which is used to determine
			 compliance with process weight limitations, grain loading or volumetric
			 concentration limitations and to determine daily emission rate.
(5) "Dry standard cubic meter" means the
			 amount of gas that would occupy a volume of one cubic meter, if the gas were
			 free of uncombined water, at a temperature of 20° C. (68° F.) and a
			 pressure of 760 mm of mercury (29.92 inches of mercury). The corresponding
			 English unit is dry standard cubic foot.
(6) "Kraft mill" or "mill" means any
			 industrial operation which uses for a cooking liquor an alkaline sulfide
			 solution containing sodium hydroxide and sodium sulfide in its pulping
			 process.
(7) "Lime kiln" means any
			 production device in which calcium carbonate is thermally converted to calcium
			 oxide.
(8) "Non-condensables" mean
			 gases and vapors, contaminated with TRS compounds, from the digestion and
			 multiple-effect evaporation processes of a mill.
(9) "Operations" includes plant, mill, or
			 facility.
(10) "Other sources" as
			 used in OAR 340-234-0200  through 340-234-0270  means sources of TRS emissions in
			 a kraft mill other than recovery furnaces, lime kilns, smelt dissolving tanks,
			 sewers, drains, categorically insignificant activities and wastewater treatment
			 facilities including but not limited to:
(a)
			 Vents from knotters, brown stock washing systems, evaporators, blow tanks, blow
			 heat accumulators, black liquor storage tanks, black liquor oxidation system,
			 pre-steaming vessels, tall oil recovery operations; and
(b) Any vent which is shown to contribute to
			 an identified nuisance condition.