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Ecodur 201: Coating a Fire Station Water Dump Station

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Specific strains of microbes have been shown to be highly effective at removing hydrocarbon pollution from water and soil making them an excellent ‘natural’ way of reducing potentially harmful pollutants that can result from activities such as fire fighting.

Often, even with temporary bunds placed around big fire where enormous quantities of water have been used, there is often an escape of contaminated water that can get into the groundwater.

Problem

A fire station in one town in Colorado wanted to add further to its program of environmental security for returning fire trucks. It wanted a safe place to release water from its hoses after an incident which would have zero impact on the site’s soil and the groundwater.

The station wanted the waste water not only safely contained but also neutralised as much as possible from any contaminants it might have been picked up, including hydrocarbons.

Solution

A two-stage solution was presented: firstly, to have a concrete below-ground storage tank constructed that would be lined with an environmentally neutral coating to protect the concrete from being degraded or absorbing toxic materials, and, secondly, a medium should should be contained in it that would, as best as possible, neutralise the contaminants in as benign a way as possible.

Ecodur provided the neutral coating barrier. Having greatly superior adhesion compared to any conventional epoxy coating, it also has zero VOCs, zero BPA, and is completely non-toxic. Ecodur is made from renewable castor oil and recyclable gypsum, a naturally occurring soft rock. Ecodur provides complete waterproof integrity as well as resistance to a very wide ranged of chemicals, including acids.

In this case, it was applied manually to an average thickness of about 30 mils which is standard for concrete structures such as these. The colour was battleship gray.

The tank was subsequently filled with a soil mix containing diverse micro-organisms, many of which are capable of ‘digesting’ hydrocarbon pollutants.

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Application Results

The concrete tank was in an ideal state for coating – clean and dry and entirely free of any cracks or other anomalies. Within 30 minutes, the Ecodur was ‘tack free’ and a further 24 hours ensured a complete cure, at which stage it was given a final inspection and declared fit for purpose. Brine submersion tests on the plasticised gypsum coating initiated 25 years ago have shown no measurable degradation. Similarly, long term roof coating tests conducted over the same period, have shown no significant deterioration other than discolouring where exposed to UV.