What is the effect of having an electrical ground close to a telecom
> (telephone land line) ground and what is the recommended distance they
> should be apart.
Electrically speaking the answer is zero. The most important thing about power and communications grounding electrodes that serve the same structure is that they should be bonded together to form a single grounding electrode system. If the two grounding electrodes are not combined into a single system then differences between them will equalize destructively through expensive electronic equipment and appliances. Best practice is to build one grounding electrode system and use it for all of the wire carried utilities that enter your home.
-- Tom Horne
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