Wow - thanks for all the insight...
I've looked over the inspection documentation for the drain field (from 1974) and this is what I've found out...the four drain pipes leading from the mainline are 12 feet long, have 5 feet of sand under them and 10 inches of cover on top of them. There is a 4 foot berm around the perimeter of it for drainage. So, I would guess that the total run area would be about 44' x 20'.
We obviously cannot build on top of the drain field, so I'm not looking to locate the coop on it, I just want to be able to let the chickens roam over it. It's semi-unused space now. (I say 'semi unused' because we obviously need to use it...flushing good!
) However, we can't park my wonderful man's van, extra truck, trailer, jet ski or boat on it. Our yard is filled with a lot of stuff - it could be easily nominated for Jeff Foxworthy's redneck backyard!
I hate seeing all that area just sitting there. The man wants to use it for a horsehoes...
Oh, and I should say that I'm going to have a REALLY small flock of birds - I've ordered two roo and ten pullet chicks - they're Norwegian Jaerhons. I can't imagine that they're going to do too much damage if I rotate yards...of course, I'm new to the chicken world, so I could be wrong. Let me know...
I'm tickled to hear that others have done this - and I love hearing about watermelons being grown there too. (I've got to figure out where the garden's going too!!!)
Please keep the info/thoughts/opinions coming!
Beth