[TowerTalk] Static source ?

[Chris Merchant KA1LMR]

I am trying to  precisely locate a strong static source, were familiar with High tension lines arcing at the insulators on very dry days. this however is the opposite , it only occurs when its raining or has been raining and still wet out it is  local . its only about 1000 Ft away but when I aim in the general direction there is  a  good S9 static,  popping sometimes sounds like oil burning in a frying pan or a motor boat  its constant for the most part and  particularly most strong on  the 6,10,12,15M bands.  With a portable radio I have narrowed it down  to 100 Ft radius in area near  the center of 2 streets, There is  transformers, caps and splices in some the power lines in the area  but have yet to find the  exact location of. power line crews have looked in the past without finding anything  but this has been going on for 10+ years any ideas on exactly what might be the culprit?  again once its no longer raining or wet out it
 completely goes away making it more difficult to find.