External compound with four units; General waste store, COSHH Store, fuel store and former FLT charging bay (currently unused) 

Chemicals and fuels have suitable containers, containment/seperation, and have suitable bunding (albeit not integrity tested or maintained; actions raised)

The compound has a slightly sloped forecourt which has an aco drain gully at it's lowest point. 

However, there is no interceptor/catchment/filter/sump etc.

The only interceptor on site is the carpark interceptor some 280m the other side of the site, through right angle turns and through/past x4 sewer manhole junctions.  

It is foreseeably likley that; bunds could fail, deliveries could be spilled, decanting liquids could cause spills etc. These chemicals and fuels would then be sat in open gullies around the building until it meets the sewerage manhole junctions and likely gets discharged into sewerage and/or surface water.

What is the requirement for interceptors; the health and safety, fire and environmental risks are foreseeable and likely. Ideally I want a proper interceptor to be excavated and installed to catch any spilled fuel or hazardous chemicals BEFORE it gets to the sewerage or surface water drains which could impact the site users and environment.

This is costly and I anticipate push back. 

Am I being overzealous, can I assume the bunds are suffcient, even though I've identified several ways they could fail?

Is there an alternative solution to interceptors?

Thanks

I would suggest you search for what an interceptor is and how it actually functions - a bunding failure of a chemical whose specific gravity is close to 1.0 would pass straight through a typical oil interceptor - in which case you need to create a massive holding tank along with all the costs of content monitring and disposal.

You need to talk to your local water and sewerage provider about what may and may not be permitted to enter their systems and work backwards (start on the assumption that surface waters should be exactly that - Rain or ice / snow melt ONLY and not any gritting run-off).

Spillage prevention on the yard area comes down to how you set up your chemical handling.

If you do then come back to an interceptor as a control remember to include operation and maintenance costs such as regular drainage to remove heavy contaminants and hazardous waste disposal for "light" liquids.

For potential delivery spillage there are mats and covers which can be used to seal open drains (watch out for the clay style pads as these may dry out over the summer moths)

Simlarly there are portable bunds which can be used for activities such as decanting.

and there's the www link to a gaming site - MissSophie REPORTED