The original blue print submitted to U.C. Davis submitted in about 2002 way more simple than you realize. Remember you're taking billions of your hard earned cash back from the gas and electric company. This easy most of you will figure it out. Home Depot - 3 55 locking drums 3 1/2 in. Metal pipes one2"round drill bit. Eight washers, one pressure regulator and release valve -----35 gallons water and any sent you like you have all you need, because of copyright law and obtained during a degree program that is as far as I can tell you. I will say this, imagine you're a fith grader putting this together and you got it