" We've got a traditional septic system already in place over here. The main drain is right here into the precast concrete box which is our you know three cavities it's the same sort of thing you see everywhere in suburban housing. But we've got an added feature to talk about today is called the infiltrator. And we have Carl Thompson here to tell us more about it hello Bob how are -- Up and -- right this is just. Your basic standard septic system right that's right from the tank down to the and we are of course. And Cape Cod where the digging is easy that's right there's nothing here but this wonderful sand and some gravel that you'll see. In the tragic but tell me what the infiltrator does what work. -- the kind of tell you know what it does different than a more traditional system is the more traditional system might be we dig this trench and put twelve inches a rocket. And that actually we should back up and explain what the drain field does right. What the drain field does is takes the water that's partially treated from the septic tank. And puts it through another treatment process where there's biological activity in the drain field there's bugs at work it's treating the waste water. -- the soil gives it kind of a final polish and it leaches through that's right. That's right and usually that involves a lot of us. Gravel a lot of grapple -- put gravel in traditionally before the chambers were around. And what the gravel does is if this was the bottom of our trench and we had gravel on the surface. What happens over time is a biological mat forms on the bottom of the trench and that's a good thing that's where a lot of the treatment takes place. But for the water to get through this layer it can only get through these spaces between the rock it can't get through the rock itself so the rocks taking up about 60% of the area. So that's how a chamber is different. We completely remove everything from the bottom and you get you can see here a 100% opens and I think we get why they called the infiltrator does it totally infiltrates and perks into the soft soil right that's right. Now what are these made out of these are made out of up polyolefin any high density polyethylene or polypropylene it's. It's nearly a 100% recycled we are a big user of recycled material and so there's leaching action that goes out sideways as well out the side and the bottom that's correct. And does it affect I mean does this system affect the amount the length of Leach field that you needed it really does in most states and these are regulated stainless. Chronically -- 'cause it's more efficient because we've removed the blockages from the surface we can put in a system that's. A lot smaller so here in Massachusetts it might be okay 40% smaller all right so what we've got from the distribution box. Is this one length that's already in place that's right and it's what maybe 4050 feet about fifty feet long. Eight chambers that are six and a quarter feet long. And of course we already said we don't have to putting crushed stone that's right the digging is easy so what I'm getting at is there must be a cost effectiveness to the system right. They're really escape the contractors that put these in love instead of taking the stone of putting in an haven't spent a lot of time leveling. These don't really easy they just snap together and and there's usually cost savings and then what they're doing now from the taking the PVC pipe over to the next trench which is what twelve feet over. It's about eight and a half feet from edge to engine and the dead and the distribution box just separating the flow equally to two of each of the infiltrator chamber lines okay. And of course one of the key things is pitch everything has to be pitched at enough -- work with gravity you work with gravity exactly how has this system been around. About seventeen year old case is not that brand new now it is and we've got to the point where we're about one out of every four septic systems that goes in. So that would imply that it's accepted by most health boards throughout the country really everywhere it's accepted in all fifty states and into all the provinces of Canada as well okay. So it is a definite alternative to the traditional leaching field that's correct thank you --"