La. Admin. Code tit. 49 § I-1231

Current through Register Vol. 50, No. 9, September 20, 2024

Section I-1231 - Depuration and/or Wet Storage Treatment Process Water Standards [Formerly 49:6.1160]

A. Bacteriological. All water to be used in shellfish treatment tanks shall be subjected to ultraviolet light treatment, or any other equally effective method of treatment approved by the Department of Health and Hospitals, National Shellfish Sanitation program manual of Operations, Part II, and the U.S. Food and Drug Administration. The treated water shall have bacterial quality equal to or better than the quality of water required in the U.S. Public Health Service Drinking Water Standards, as stated in Public Law 93-523 (Safe Drinking Water Act). The process water shall be treated daily. However, water from approved growing areas may be used in wet storage tanks without disinfection if the system used has a continuous flow-through design and provided that the near shore used for supplying the system meets the National Shellfish Sanitation Program approved area bacteriological criteria at all times that shellfish are being held for direct marketing.

B. Dissolved Oxygen. The amount of dissolved oxygen in the water in the treatment tanks shall be no less than 50 percent of saturation.

C. Temperature. Treatment tank water temperatures shall be measured daily during the treatment or wet storage process at the discharge end of the tanks. The temperatures of sea water shall be maintained between 10C and 35 C.

D. Turbidity. Turbidity in the treatment process water shall not exceed a value capable of inhibiting the normal physiological activity of shellfish and/or would interfere with process water disinfection.

E. Salinity. Salinity of the process water shall not vary more than + 20 percent of median salinity regimes of the harvest area.

F Metallic Ions and Compounds. Levels of metallic ions and compounds shall not exceed levels found in approved shellfish harvesting areas and shall be measured if required by the Department of Health and Hospitals.

G Pesticides, Detergents, and Radionuclides. Levels of pesticides, detergents, and/or radionuclides shall not exceed levels found in approved shellfish harvesting waters and shall be measured if required by the Department of Health and Hospitals

La. Admin. Code tit. 49, § I-1231

Promulgated by the Department of Health and Human Resources, Office of Preventive and Public Health Services, LR 11:550 (May 1985), amended by the Department of Health and Hospitals, Office of Public Health LR16:414 (May 1990).

AUTHORITY NOTE: Promulgated in accordance with Louisiana Revised Statutes of 1950, Title 40, as amended.