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Keywords :- Costs of bioremediation of diesel contamination

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From: -Marc Fawcett
Date: 27th October 1999
Subject: Costs of bioremediation of diesel contamination

 

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Dear Micky,

I am trying to compile a quick study into the costs of bioremediation of diesel contamination within shallow groundwater/soil.

What I am trying to produce is a ball park range of figures for remediation costs based upon a square metre surface area basis.

Whilst I appreciate that there are many variables dictating costs at least a ranged cost estimate could be given. the reasoning behind this is to be able to give clients a 'feel' for costs.

Any information would be gratefully received.

Marc

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Dear Marc

Bioremediation using bacteria plus nutrient plus oxidiser in carbon pellets, that are injected into the ground using wells at 1-2 metre intervals costs around 20 per cubic metre

However I don't have a figure for a square metre surface area basis so :-

  1. I have forwarded your enquiry to John Lapinskas, who has spoken at various DTI roadshows here in the UK about bioremediation etc and is a very approachable Canadian who knows his subject backwards.

  2. The Government has just implemented a biotechnology initiative called 'BIO-WISE'. The idea is to offer free + independent advice on how to use biotechnology to meet environmental legislation. They have a whole series of seminars planned for next year.

    The BIO-WISE helpline can be reached either by freephone - 0800 432 100 or else via the web at www.dti.gov.uk/biowise.

    cheers

    Micky


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Dear Micky

I assume that you are exclusively referring to insitu remediation, as the request is to provide costs on a square metre basis, rather than per excavated cubic metre as ex situ.

My experience over the last 15 years in Europe and the UK for Shell, BP, Fina, Total and Texaco is that :-

  1. a typical average petrol station forecourt is 50m x 50m in size
  2. the treatment period is 6 to 12 months following installation and commissioning
  3. cleanup of diesel/petrol contamination would range from 30,000 up to 100,000
  4. this translates to a square metre cost range of 12 to >40 (depending on the degree of site complexity)

This ballpark figure, it must be stressed, depends on the specific site conditions (underlying geology, hydrogeology, stratigraphy, depth to groundwater piezometric surface etc)

Trust this has been of some help.

Best Regards

John D Lapinskas
Principal Remedial Consultant
GeoDelft Environmental Ltd


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