As the rest of the world turns it attention to Hollywood and the Oscars, we’ve been focused on the only marginally less high-profile What House Awards. One of our clients, Q Developments, picked up two awards, one of which was for their development of a former filling station site in Teddington. We’re very proud to be able to say that we played our part in this project for Q Developments, having undertaken the decommissioning and removing the former petroleum installation and the treatment of hydrocarbon and asbestos-related soil contamination prior to the site’s residential redevelopment. Our congratulations to Q Developments on their award.
Ok, that claim may be stretching things a little, but our forensic analysis team have recently notched up a few notable successes. We were awarded a contract to treat petrol and diesel contamination in the soil and groundwater under a filling station. The site had a history of leaks, the most recent of which was six years ago. Since then one of our competitors had been trying (and failing) to clean the site up.
We were brought in to deal with the contamination once and for all. The first thing we did was to carry out some forensic analysis of the contamination using proprietary methods we have developed over the last 20 years. Our analysis indicated that there was an ongoing leak at the site, and was even able to pinpoint where on the site it was likely to be.
Our client commissioned precision tank and line testing which confirmed a slow leak under pump island 7 – just where we had predicted. The rate of leak – 0.29litres/hour – was actually below the precision testing threshold, meaning that the fuel lines passed the test and were certified as ‘not leaking’. However, this rate of leak would result in around 2,500litres of fuel entering the ground under the site each year – more than enough to cause serious contamination.
So the lessons learnt? Firstly, tank and line testing is very far from foolproof and fails to identify leaks that can cause serious environmental issues. Secondly, the timely use of forensic analysis can prevent significant time and money being wasted on ineffective remediation work.
Friday 12th June was a red letter day here at Subadra. For a little while now we’ve had a mysterious large box sat in a room on its own in our laboratory. As the weeks have passed, we’ve seen cables, pipes and tubes connected, forced ventilation and cooling added and finally an argon supply plumbed in. Then finally all was revealed as our new ICP was commissioned.
For those not familiar with laboratory acronyms, ICP stands for Inductively Coupled Plasma Instrument. We’ll be using this to analyse soil and water samples for metals. In addition it will be playing a key part in ensuring we continue to offer the fastest waste classification service (or WAC as its known) in the UK.
Actually, there is nothing mythical about Subadra being commissioned to install shallow monitoring wells at the Daedalus Airfield Development! We constructed several shallow wells over the course of two days using our Hollow Stem Auger drilling system.
Lee-on-Solent is known for its sand and a dense gravels which are more or less guaranteed to make drilling difficult. So to avoid this we used our powerful Comacchio drilling rig which ensure we reached the target depth at all the drilling locations with minimal disruption to the site. We then installed 50mm diameter wells to allow future groundwater sampling. All our materials were sourced locally to enable us to take the minimum of equipment and vehicles thus reducing our carbon footprint for the works.
We even had time to the collect soil samples for the Principal Contractor and get them
analysed for WAC by our in house lab facility. As a result of our prompt and efficient service the client retained us to carry out a more detailed geotechnical investigation at the site. No myth there then!
We’ve recently upgraded our laboratory’s facilities for waste classification (WAC) analysis. We already offer the fastest turnaround analysis in the UK, but we can now analyse a greater number of samples after installing our new soil tumbler. Designed and fabricated in-house, this allows us to simultaneously complete the leachate stage of the analysis on an additional 12 samples per day. These can either be samples supplied by our clients or samples taken by our technicians at clients’ sites.
If you’d like to know more about our WAC analysis or if you are a laboratory and would like to purchase a similar soil tumbler, then please contact Duncan Eastland – 01296 739431.
Last week saw the arrival of two UKAS auditors to carry out their annual inspection of our laboratory. Most years this is a ‘surveillance’ visit completed in a day but every four years UKAS carry out a root and branch review of everything that we do. This year was one of those years.But after comprehensively checking, witnessing and reviewing everything our lab does, UKAS confirmed our accreditation to ISO17025 and MCerts standards. This means that our can continue to offer the fastest turnaround for soil and water analysis in the UK, with over 90% of all results provided within 5 working days. For further information contact Kate Clark on 01296 739423.