§ 30-59. Hazardous metals and toxic materials.

(a)

No discharges may contain concentrations of hazardous metals other than amounts specified in subsection (b) of this section.

(b)

The allowable concentrations of hazardous metals, in terms of milligrams per liter, for discharge to inland waters, and determined on the basis of individual sampling in accordance with "Standard Methods" are:

		Not to Exceed
	Metal	Average	Daily Composite	Sample
(1)	Arsenic	0.1	0.2	0.3
(2)	Barium	1.0	2.0	4.0
(3)	Cadmium	0.05	0.1	0.2
(4)	Chromium	0.5	1.0	5.0
(5)	Copper	0.5	1.0	2.0
(6)	Lead	0.5	1.0	1.5
(7)	Manganese	1.0	2.0	3.0
(8)	Mercury	0.005	0.005	0.01
(9)	Nickel	1.0	2.0	3.0
(10)	Selenium	0.05	0.1	0.2
(11)	Silver	0.05	0.1	0.2
(12)	Zinc	1.0	2.0	6.0

 

(Note: These concentration parameters and rules governing same are promulgated under authority of Sections 5.131 and 5.132, Texas Water Code, Hazardous Metals, and in accordance with Texas Department of Water Resources Rule 156.19.)

(c)

No other hazardous metals or toxic materials may be discharged into public sewers without a permit from the approving authority specifying conditions of pretreatment, concentrations, volumes, and other applicable provisions.

(d)

Prohibited hazardous materials include but are not limited to:

(1)

Antimony,

(2)

Beryllium,

(3)

Bismuth,

(4)

Cobalt,

(5)

Molybdenum,

(6)

Uranyl ion,

(7)

Rhenium,

(8)

Strontium,

(9)

Tellerium,

(10)

Herbicides,

(11)

Fungicides, and

(12)

Pesticides.

(Ord. No. 433, § 4, 8-23-82)