La. Admin. Code tit. 43 § XV-2523

Current through Register Vol. 50, No. 11, November 20, 2024

Section XV-2523 - Probable Hydrologic Consequences Determination

A. The application shall contain a determination of the probable hydrologic consequences (PHC) of all anticipated mining within the permit area upon the quality and quantity of surface water and ground water under seasonal flow conditions for the proposed permit and adjacent areas.

B. The PHC determination shall be based on baseline hydrologic, geologic and other information collected for the permit application and may include data statistically representative of the site.

C. The PHC determination shall include findings on:

1. whether adverse impacts may occur to the hydrologic balance;

2. whether acid- or toxic-forming materials are present that could result in the contamination of surface-water or ground-water supplies;

3. whether the proposed operation may proximately result in contamination, diminution or interruption of an underground or surface source of water within the proposed permit or adjacent areas which is used for domestic, agricultural, industrial or other legitimate purpose; and

4. what impact the proposed operation will have on:

a. sediment yield from the disturbed area;

b. acidity, total suspended and dissolved solids and other important water quality parameters of local impact;

c. flooding or streamflow alteration;

d. ground- and surface-water availability; and

e. other characteristics as required by the office.

D. An application for a permit revision shall be reviewed by the office to determine whether a new or updated PHC determination shall be required.

La. Admin. Code tit. 43, § XV-2523

Promulgated by the Department of Natural Resources, Office of Conservation, LR 5:395 (December 1979), amended LR 14:441 (July 1988), LR 20:447 (April 1994).

AUTHORITY NOTE: Promulgated in accordance with R.S. 30:901-932.