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Figure 6. CROSS SECTION OF A TYPICAL <br /> CATHODIC PROTECTION WELL <br /> NOTE= Schematic, not to scale) <br /> Irect Cuaont <br /> Source <br /> - - Vault with {Rectifier) <br /> Cover Ground <br /> of mu" Rend Vented Cap Surface <br /> _ Electrical 7bl{Sometimes Iudeof Vent <br /> Annular Space - "{ • "" <br /> (2' Minimum) �r <br /> ' �, . Buried Pipellne <br /> X. --------- Annular Seal to be protected <br /> (Extends to at leest 20' <br /> from ground surface) <br /> Non--Conductive <br /> BackriII <br /> ^� - -- - -- Vent Pipe <br /> (Casing) <br /> - Conductive BackFll <br /> Anodes <br /> Borehole <br /> -C�1- <br />