Florida Administrative Code › 5 - DEPARTMENT OF AGRICULTURE AND CONSUMER SERVICES › 5L - Division of Aquaculture › Chapter 5L-1 - THE COMPREHENSIVE SHELLFISH CONTROL CODE › Section 5L-1.017 - Water Treatment Standards

Current through Reg. 50, No. 138; July 16, 2024
(1)
				Depuration Water Treatment Standards.
(a) All
				controlled processes require quality tests to determine if standards are being
				met and if controls are effective. The depuration treatment of shellfish is a
				controlled process designed to reduce bacterial contamination to an acceptable
				level, as defined in subsection
				5L-1.004(5),
				F.A.C. Wet storage is designed to enhance the product quality without
				degradation of market standards as defined in Rule
				5L-1.004, F.A.C. To insure the
				continuing effectiveness of the shellfish depuration treatment process, the
				minimum sampling procedure as described below shall be followed.
(b) Incoming seawater.
1. Type of test - temperature, turbidity,
				salinity, dissolved oxygen.
2.
				Frequency - each time seawater is withdrawn.
(c) Effluent from UV light treatment unit.
1. Type of test - bacteriological.
2. Frequency - once per day per
				unit.
(d) Bacteriological
				- All water to be used in shellfish treatment tanks shall be subjected to UV
				light treatment. The water discharged from the UV unit shall have no detectable
				levels of the coliform group as measured by the recognized multi-tube MPN test
				per 100 ml for potable water and acceptable for use with marine water and
				follow the protocol of the Decision Tree (Section IV. Guidance Documents
				Chapter III .05), as stated in Section II Chapter VII .04 C (1)(f), of the NSSP
				Model Ordinance as incorporated in Rule
				5L-1.001, F.A.C.
(e) Dissolved oxygen - The amount of
				dissolved oxygen in the water in the treatment tanks shall be at least 5 mg/l
				and shall be measured daily.
(f)
				Temperature - Treatment tank water temperature shall be measured daily during
				the treatment process. Temperature of seawater used in the treatment process
				shall be suitable for depuration.
(g) Turbidity - Turbidity in the treatment
				process water shall not exceed 20 N.T.U. (Nephelos Turbidity Units) and shall
				be measured daily.
(h) Salinity -
				Salinity of the treatment process water shall be suitable for depuration and
				shall be measured daily.
(i) pH -
				pH of the treatment process water shall range from greater than or equal to 7.0
				to less than or equal to 8.4 and shall be measured daily.
(j) 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.
(k) Pesticides, detergents, and radionuclides
				- Levels of pesticides, detergents, and radionuclides shall not exceed levels
				found in approved shellfish harvesting areas and shall be measured if required
				by the Department.
(l) Marine
				toxins (
Karenia brevis
) - Levels of
Karenia
				brevis
in the incoming seawater and in the source water shall not
				exceed 1, 000 cells/liter. Only Department personnel, or personnel approved by
				the Department, shall determine levels of
Karenia brevis.
The following table provides a summary of the depuration
				  treatment process water standards:
Table 1. DEPURATION TREATMENT PROCESS
							 WATER STANDARDS
Parameter
Minimum
Maximum
Bacteriological
0
Less than 1
Dissolved Oxygen (Milligrams/liter)
5.0
Saturation
Temperature
Suitable
Suitable
Turbidity (Nephelos Turbidity Units)
0
20 units
Salinity
Suitable
Suitable
Parameter
Minimum
Maximum
pH
7.0
8.4
Metallic Ions and Compounds
Not exceeding levels found in approved shellfish
							 harvesting areas.
Pesticides, Detergents and Radionuclides
Not exceeding levels found in approved shellfish
							 harvesting areas.
Marine Toxins (
Karenia
							 brevis
)
0 cells/liter
1, 000 cells/liter