sparky66wv,
One of Allegheny Power's requirements states that when the meter base is lower than the transformer pad or street level, etc. you are to drill weep holes in the sch80 riser and place gravel under the riser to allow for drainage.
I have also seen this happen a long time ago. I guess that it has been a problem for APco so they made a new rule. If you have an APco rules book (2002) you should be able to find it in there. (Page 37 of the 2000 rules book.)
This is also required in either direction. such as if the meter base was higher than the transformer.
