In Vermont the state required me to install a mound system when my prior septic failed- one which had been in existence since around 1974. Originally it was like the system touted by L.Brown- no real leach field per se and just a 1000gallon tank 10' off the house's DWV line. It got everything we could throw at it inc. dishwasher, washer, chemicals, etc. We spared it no pain. A number of years ago when effluent started showing up on the edge of the front lawn we investigated the leach field and found none. We installed one, as best we could, because there is so much water at or very close to ground level it's RIDICULOUS! It too failed within a year or two because even though we installed a curtain drain to keep ground water from saturating the field it was to no avail.
A couple of years ago we started a MASSIVE renovation/ addition + barn with it's own system. That is just the beginning of the NIGHTMARE of new septic systems in VT. My GC hired a 'site tech' who THEORETICALLY had all necessary credentials to tell us what we had to do to meet the state's requirements.
He had me dig a few shallow test pits to see soil composition and water table depth and rendered an opinion that I would HAVE to go to a mound system because of the soil and water issues. We dug another test hole in the field about 25 yards from my house downhill from the existing septic tank. This all took place in the Spring, way before we would need to get the system up to running with state approval, etc.
After much inattention and multiple screw-ups the system was installed with a pump tank, alarm, vent, filters on both the original septic tank, and the new tank specked for the barn.
There was little time to get grass growing on the mound which was and is considered to be a 'performance based mound system' with very specific specks as to what needs to go where as far as sand, fill, etc. The system has laterals, which have spray nozzles which are at near the top of the system to allow effluent to spray up into the upper layers and then be absorbed on the way down through the mound toward grade w/OUT contaminating surrounding ground water.
It required testing my well to see if the state thought I might need to drill another well to supply enough water to the new barn with apartment. The state uses # of bedrooms to calculate the maximum amount of water needed for everything to run at once and then throws in some fudge factor and the existing well must meet this calculated load or else. The well passed.
The costs were/ are ASTRONOMICAL! between the excavator, 'site tech', (read unqualified state sanctioned flunky), NOT having adequate qualifications to actually do the engineering necessary for the whole project, professional engineer, with real credentials, and electrician, etc., etc.
It was somewhere in the neighborhood of $30, 000 !!
Then, first winter, X-mas week two years ago, it froze solid and set off the alarm!!!
Excavator was there to address it the same day. He dug a hole by the feed pipe and drilled a 1/4" hole at the outer edge of the elbow feeding the mound's
laterals.
He then took 'blankets' designed to be used when pouring/curing concrete in cold weather and spread then over the entire mound, covered it all with hay and fired up a rented oil fired boiler to run hot water through the hoses under the blanket at $400 of oil/day for nearly a week. At an overall additional cost of $7000 I had to pay we now had a mound system the state refused to approve until it passes THREE YEARS of Spring season verification by the professional engineer!!! We are now at two of the three years to get a state permit which I can then file with the town and on my deed to the property.
Oh, did I mention that I had to have the excavator REMOVE the hole and I came up with a solution to the effluent not being able to run out of the laterals once the pump shuts off in cold weather? I had the excavator install a third empty septic tank and move the pump station, and other things that were done wrong by the site tech who 'designed' the flawed system, because I still have to pass with the state and they would not allow the 1/4" hole near grade- so I had to devise a way to cover my own butt since neither the site tech, excavator or state was going to pay to thaw out the mound a second time around, and neither was I going to pay for any more screw ups. And the state sent me a letter letting the site tech know he was NOT qualified to sign off on the system in the first place.
Moral of story- WATCH OUT! Check EVERYONE"S qualifications and make sure no-one like a site tech has not disclosed that the job they are doing for you is actually their LAST and they are in process of selling/closing their business! And find out exactly what the state requires and do your best to understand what your obligations are and theirs.
One last note: the site tech only received some of what he billed me for and he was told unless he could get me a state permit he would NOT be paid the balance for his work. He was in turn going to use part of what I was supposed to pay him to pay the professional engineer he had to bring in to get the site work done and approved by the state - eventually. I told him, the pro engineer when I am fully permitted after the three year period I will directly pay his fee. The excavator did a lot of work- labor wise which he did not charge me for around X-mas time the first year.
There is clearly a need to keep our groundwater clean as possible but I am testimony as to the errors the states make in allowing unqualified people to pose as qualified enough to deal with these massively complicated systems. The state(s) know mound systems are not working properly but they keep requiring average Joe citizen to install and then deal with the nightmares of their yet unproven design parameters. One is literally held hostage on one's own land by the state of decay known as local state government. But don't get me started on the politics of what states are now willing to do to get revenue any way they can to burn like brush at all of our expense!!!

END TRANS!
Sorry for the long rant- but I thought my nightmare might be useful to others.

:thumbsup:
CM OUT!