Browse Forums Building A New House 1 Aug 12, 2014 8:20 pm Hi, have been reading a few topics on the forums seams like a lot of useful information and helpful people. I've got a little issue,bought an unregistered lot of the plan in small subdivision in south sydney at auction as in impulse buy as it in a decent area. Anyways found out there was a previous underground oil storage tank that happened to be on the lot were I purchased. Very annoyed it wasn't shown on any of the plans for the subdivision. The contract stated in special conditions that existing tank was removed and filled previously with uncontrolled fill and existing fill will be removed and new controlled fill added and compacted according to standards. Upon talking with developer they are now claiming that existing fill is adequate and they will not be doing anything about it. Talking to solicitor it seems I should be able to get out of the contract but then im back to square one, it's extremely hard to find level land in this area. Should I run lol? Talking to geotechnical he thinks that tank was around 3m deep 10m long and 5m wide and located In my building envelope. Worst case scenario could I peir bellow the existing tank? If they do provide a compaction report would that negate the need for piers. What happens if their is oil in the ground from the previous tank? Preliminary assesement of site be geotechnical engineer states h2 classification. Anybody's thought or info would be much appreciated. Thanks Re: Building new home on problem site underground oil tank 2Aug 12, 2014 8:32 pm Controlled or uncontrolled fill you will still finish up with the area where the tank is being different to the remainder of the site. To minimise the chance of movement piers into undisturbed ground is likely to be the best solution. The Harder You Try - the Luckier You Get ! Web site http://www.anewhouse.com.au Informative, Amusing, and Opinionated Blog - Over 600 posts on all aspects of building a new house. Re: Building new home on problem site underground oil tank 3Sep 18, 2014 1:32 am Hi cal50l, T agree with bashworth on the piers. the oil in the ground testing can be expensive. Avoid it if you can on costs grounds alone. It's what they often do for commercial sites where once service stations or industry once existed. You need a hydrology firm... and they aren't cheap if you want it done to EPA standards. Perhaps just a bore or two and report might not cost more than a thousand or two. Are the tanks emptied? And are you going to collapse them of fill them? Leonardo_23 Re: Building new home on problem site underground oil tank 4Oct 01, 2014 1:06 pm This is an issue that is very hard to answer without knowing all the facts. The EPA would need to be involved and that authority would be able to advise the correct course of action to take. Re: Building new home on problem site underground oil tank 5Dec 24, 2014 11:39 am Cal50l You well need to contact EPA There are a number of points to consider 1. Is your soil contaminated? Soil testing Required 2. Is there the potentual for the tank to leak pollutants? Long term monitoring and Substrate leaching simulations required You would need to consider the above points even before you consider piling Rehabilitating contaminated sites is very expensive...look around there are plenty of vacant petrol station sites selling cheap. Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs I'm about to put down some Merbau. Is it necessary to oil underneath the boards before laying? 0 761 Hi, as per the subject. Does anyone have any recommendations for the best value decking oil (Bunning is close to where I live) for a treated pine deck? Thanks 0 1290 Hi JW I just read your post and I find this situation quite strange. When we build, we get a temp pole for construction which becomes the permanent pole for one of the… 1 3219 |