All required functional check valves, low pressure drains and vacuum relief valves shall be placed within the irrigation system consistent with Diagram 1*, which is attached hereto and made a part of this rule.
*Diagram 1 appears on page 821.
DIAGRAM 1 INSTALLATION OF ANTI-SYPHON
DEVICE IN IRRIGATION SYSTEM
Ga. Comp. R. & Regs. R. 40-23-2-.03
Ga. L. 1981, p. 1256; Ga. L. 1982, H.B. 1780 (O.C.G.A., Sec. 2-1-4).