Change in Wastewater treatment proposal from planning grant

mistermatthew

Have planning for a for a football centre. The planning has a proposal for a Balancing tank, septic tank and percolation area as the wastewater treatment.

The detailed designer has said this won't work and a seperate system with an SBR and Polishing filter is required. Will this need an ammendment to planning or can I just write to planners and explain the changes reasoning?

sydthebeat

Why will the system as accepted by the planning authority not work, according to the dc?

Rabbo

The planning application would have been accompanied with a detailed site suitability assessment which would have concluded that a septic tank system was sufficient. The council obviously accepted the findings as they granted permission.

You need to find out why exactly the designer believes the septic tank is not sufficient. Is the designer acting on behalf of a treatment plant supplier? Even though the replacement of the septic tank system with a treatment plant system would be an improvement, any changes to an approved wastewater treatment system generally requires permission.

If you are satisfied that the designer is correct, it dosent hurt to approach the planning authority and ask if the change would constitute a material change to the approved permission. If it does, you will have to submit a new planning application for revised wastewater treatment system. This would take min. 3 months to complete.

mistermatthew

sydthebeat wrote: »

Why will the system as accepted by the planning authority not work, according to the dc?

It's to do with the nature of the loadings, where there will be little activity and then maybe a match with a small crowd etc. He is reccommending an SBR with p.e between 14-64, ie. it varies with the different loadings.

He says the proposed sysstem in planning is not a viable system due to the variation in loadings. And yes they represent the Wastewater treatment supplier.

sydthebeat

What exactly is the proposed system?

mistermatthew

sydthebeat wrote: »

What exactly is the proposed system?

It is and SBR plant, Capable of handling 14-64 p.e. variable loadings, with a tank for 24hr emergency storage, and a oil polishing filter to the EPA COP 2009.
The Soil polishing filter has always been proposed, the change is an SBR unit going in.

Poor Uncle Tom

Sorry, to clear it in my head,

Is the emergency storage tank (to cater for shock loadings) porposed now, or proposed to be left out now?

mistermatthew

Poor Uncle Tom wrote: »

Sorry, to clear it in my head,

Is the emergency storage tank (to cater for shock loadings) porposed now, or proposed to be left out now?

Ok, the emergency storage tank as originally proposed, ie. as 5m cubed concrete tank is to no longer required as the SBR unit can deal with the variations in flow/shock loading.
However a 6m cubed tank is being provided as 24hr emergency storage in case of power outage/SBR breakdown.

so really the change is there is no longer a 5m^3 balance tank but instead a 6m^3 emergency storage tank (24hr max loading=6000litres).

And an SBR unit is being provided although the planning only asks for details on the proprietary wastewater treatment system. So I assume putting in an SBR is ok.

So really the question is, is it ok to put in the 6m^3 emergency storage tank rather than 5m^3 balance tank.

Sorry if I'm confusing the matter

Poor Uncle Tom

The wording of any condition on the planning permission relating to the system would come into play here.

I would take it that any change to the proposal as granted planning permission would need to be the subject of a report and recommendation to the planners from an indemnified site assessor, that way everyone is covered, and the system being put in is fit for purpose, at least the person saying so is indemnified.

I couldn't see the planners having any problem with that.

mistermatthew

Poor Uncle Tom wrote: »

The wording of any condition on the planning permission relating to the system would come into play here.

I would take it that any change to the proposal as granted planning permission would need to be the subject of a report and recommendation to the planners from an indemnified site assessor, that way everyone is covered, and the system being put in is fit for purpose, at least the person saying so is indemnified.

I couldn't see the planners having any problem with that.

Ok thanks for that, I will draft the response and see if the planners require a report also.