§ 42-56. Required backflow prevention devices and hazard, generally.

(a)

The cross connection hazard and backflow preventers required shall be as set forth in the following chart:

	Type of Device to be Used
Type of Connection	1 Air Gap	2 Vacuum Breaker, Atmospheric	3 Vacuum Breaker, Pressure	4 Double Check Valve Assembly	5 Reduced Pres. Principle Backflow Preventer
I. Direct water connections, subject to backpressure from:
A. Pumps, tanks and lines containing:
1. Sewage substances	X
2. Toxic substances	X
3. Nontoxic substances	X			X	X
B. Steam lines and steam boilers:
1. Boiler or steam connection to toxic substances	X				X
2. Boiler or steam connection to nontoxic substances (boiler blow-off or drains not connected directly to sewer)	X			X	X
II. Inlet type water connections not subject to backpressure:
A. Waste line (not subject to backpressure due to waste line stoppages)	X	X	X		X
B. Low inlet to receptacles containing toxic substances	X	X	X		X
C. Low inlet to receptacles containing nontoxic substances	X	X	X	X	X
D. Low inlet into domestic water tanks	NO PROTECTION REQUIRED
E. Lawn sprinkler systems	X	X	X		X
F. Coils or jackets used as heat exchangers in compressors, degreasers or other equipment:
1. In toxic substances	X	X	X		X
2. In nontoxic substances	NO PROTECTION REQUIRED
G. Flush valve toilets		X
H. Toilet and urinal tanks	X	X
I. Trough urinals		X
J. Valved outlets or other fixtures with hose attachments which may constitute a cross connection	X	X	X		X

 

(b)

Where investigation discloses that unusual or extraordinary hazards require more stringent means of protection, the director shall have the authority to require the installation of the same. The director shall in all cases specify the facts constituting the greater hazard found to require more stringent protective measures. The more stringent protective measures shall be related to such unusual or extraordinary hazards and shall be no more burdensome than is reasonably necessary to alleviate or guard against such hazards. The director shall specify in writing to the owner the manner in which the more stringent protective measures alleviate or guard against the unusual or extraordinary hazards.

(Ord. No. 6233-06, § 1)

(Ord. No. 6233-06, § 1)