EW,
The Easyway Plastics 48" sq PVC anti-seep collars go for about $100 plus frt. A 48" sq. Neoprene runs about $50 plus frt. If you find a better deal, lemme know. My contact at Easyway is Tom Rhodes, Ph 877-387-5472 or email via website. Tell him Brett from Ill sent ya...we have exchanged a number of e-mails in the past 3 weeks. I had him price the same unit in Sched 80...about $140 (in excess of 15' depth of soil, sched 80 pipe/product required).
I have a hard copy of Pub 590. It is v convenient for reference...at the finger tips...and gets used alot. Your USDA office should be able to getcha one. If it saves one boo-boo, it was worth it.
(edit) p.s. silicone sux...polyurethane rules!
