Md. Code Regs. 26.11.05.01

Current through Register Vol. 51, No. 24, December 2, 2024

Section 26.11.05.01 - Definitions

A. "Air Stagnation Advisory (ASA)" means a forecasted atmospheric stagnation that is expected to last 36 hours or more.

B. "Atmospheric stagnation" means a measure of the inability of the atmosphere to adequately dilute and disperse pollutants emitted into it, based on values of specific meteorological parameters of the microscale, mesoscale, and macroscale features, and which satisfies the criteria established by the National Meteorological Center set forth in Environmental Science Service Administration Technical Memorandum WBTM-NMC 47 published by the Department of Commerce, May, 1970.

C. "Chemical and allied products industries" means establishments engaged in the manufacture of:

(1) Basic chemicals such as acids, alkalies, salts, industrial gases, and organic chemicals;

(2) Chemical products to be used in further manufacturing such as synthetic fibers, plastics, dry colors, and pigments;

(3) Finished chemical products to be used for ultimate consumption such as drugs, cosmetics, soap, paints, fertilizers, and explosives (Standard Industrial Classification, Major Group 28).

D. "Emergency" means a sudden, unexpected, and unforeseen condition of such public gravity and exigency as to require immediate action, or a condition which is predicted with reasonable certainty to require immediate action to carry out the purposes of this subtitle.

E. "Glass, clay and concrete products industries" means establishments engaged in the manufacture of glass, glassware, textile fibers, glass insulation, wool, structured clay products, concrete products, gypsum and plastic products, lime abrasives, and asbestos (Standard Industrial Classification, Major Group 32).

F. "Paper and allied products industries" means establishments engaged in manufacturing wood pulp from wood or other materials and the manufacture of paper, paperboard, and building paper (Standard Industrial Classification, Major Group 26).

G. "Petroleum refining and related industries" means establishments engaged in petroleum refining, the manufacture of paving and roofing materials from petroleum products, and compounding paving and building materials and petroleum products (Standard Industrial Classification, Major Group 29).

H. "Pollutant Standards Index (PSI)" means a standardized reporting system for advising the public of possible adverse health effects due to air pollution. PSI is a reporting tool that converts measured air pollutant concentrations to a simple number on a scale of 0 to 500. A level of 100 on the PSI scale corresponds to the National Ambient Air Quality Standard for ozone, carbon monoxide, nitrogen dioxide, sulfur dioxide, or particulate matter. Only the highest PSI is reported for any one period. The levels between 0 and 100 correspond to a percentage of the standard, while the levels between 100 and 500 are uniform intervals between the National Ambient Air Quality Standard and the "significant harm level", as defined by the U.S. Environmental Protection Agency.

I. "Primary metals industries" means establishments engaged in the:

(1) Smelting, refining, sintering, and alloying of ferrous and nonferrous metals from ore, pig or scrap; and

(2) Manufacture of castings, forging, powdered metals, and other basic products of ferrous and nonferrous metals, including the production of coke (Standard Industrial Classification, Major Group 33).

J. "Special Dispersion Statement (SDS)" means a forecasted atmospheric stagnation that is expected to last more than 12 hours but less than 36 hours.

Md. Code Regs. 26.11.05.01

Regulation .01 amended effective June 18, 1990 (17:9 Md. R. 1092)