Leachate detection
Leachate detection
(OP)
We are installing a well located somewhat near a old town dump. While groundwater flow has been proven (prior hydrogeo investigation) to flow away from the well, we need to confirm there is no contamination at the new well. What type of water quality test would be a good indicator there is no leachate in the well water?
Thanks
Thanks





RE: Leachate detection
RE: Leachate detection
Leachate contains some of the nastiest compounds known to mankind. If the landfill was recently closed and was in use for about 30 years, leachate will be a problem for about the next 50 years. If the landfill is not lined properly then the problem has exponentially accelerated. Proximity to the landfill, the surrounding soils, the landfill management policies, post closure policies, etc. will all play a role in the leachate migration and possible contamination into the aquifer.
Be very careful with this one, and do your homework first. Otherwise carry some big insurance.
KRS Services
www.krs-services.com
RE: Leachate detection
Agree strongly with KRS: “Be very careful with this one, and do your homework first.” You need to do a 24 hour continuous maximum pumping, with sampling before and after, as you may cause localized drawdown and backflow of the aquifer. Also, you may be liable for effects upon neighboring wells. Check for historical watertable records from any nearby municipal or irrigation wells (both heavy users). Effect of drought years?
RE: Leachate detection
Very common practise here in Ireland.
Michael
RE: Leachate detection
As to your original question, if budget was a concern and I could just run one test I would analyze the groundwater in your well for EPA Method 8260 volatile organics. This method targets common volatile organics in fuel, solvents, household products, etc and can detect very low concentrations of these compounds. Also, some of these common volatile compounds such as acetone are very soluble and therefore more mobile.