1983-06-03_REVISION - M1977285 (2)

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43.2 "Leachate" means any liquid, including any suspended or dissolved compo- • nents in the liquid, that has percolated through or drained from the byproduct material. "Licensed site" means the area contained within the boundary of a location under the control of persons generating or storing byproduct materials under a license. "Liner" means a continuous layer of natural or man-made materials, beneath or on the sides of a surface impoundment which restricts the downward or lateral escape of byproduct material, hazardous constituents, or Leachate. "Maximum credible earthquake" means that earthquake which would cause the maximum vibratory ground motion based upon an evaluation of earthquake potential considering the regional and local geology and seismology and specific characteristics of local subsurface material. "Point of compliance" is the site-specific location in the uppermost aquifer where the groundwater protection standard must be met. The objective in selecting the point of compliance is to provide the earliest practicable warning that an impoundment is releasing hazardous constituents to the groundwater. The point of compliance is selected to provide prompt indication of groundwater contamination on the hydraulically downgradient edge of the disposal area. • "Rule" is as defined in The Administrative Procedure and Texas Register Act, Article 6252-13a, V.T. C. S., as amended. The word "rule" was formerly referred to as "regulation." "Rule" means any agency state- ment of general applicability that implements, interprets, or prescribes law or policy, or describes the procedure or practice requirements of an agency. The term includes the amendment or repeal of a prior rule but does not include statements concerning only the internal management or organization of any agency and not affecting private rights or procedures. "Security" means: (1) cash deposits; (2) surety bonds; (3) certificates of deposit; (4) deposits of government securities; (5) irrevocable letters of credit; or (6) other security acceptable to the elgency. "Surface impoundment" means a natural topographic depression, man-made excavation, or diked area, which is designed to hold an accumulation of liquid wastes or wastes containing free Liquids, and which is not an injection well. "Uppermost aquifer" means the geologic formation nearest the natural ground surface that is an aquifer, as well as lower aquifers that are • hydraulically interconnected with this aquifer within the facility's property boundary. 43 - 3 (April 1990)