Thursday, 12 March 2020

Daylight and Sunligy Assessment - London - N4

We have recently been commissioned to undertake a sunlight and daylight assessment in North London (N4).


The project is relatively small involving a roof extension.


We have been provided with plan for the proposal, as well as detailed elevations, and we will prepare a before and after comparison of sunlighting and daylighting conditions.


The BRE209 guide suggests that  20% reduction in lighting levels is acceptable, most projects fall within the 20% allowance.


If you are looking for an environmental consultant in London to undertake a Sunlight and Daylight Assessment then please call or email Southwest Environmental limited we would be very happy to assist and we can also provide design advice.




Monday, 20 January 2020

Permit Variation - Trowbridge - Wiltshire

We have recently been commissioned to undertake a Permit Variation  in Trowbridge, Wilshire.


The site has been running under an existing permit for a number of years, but an upgrade to some of their equipment will mean that an environmental permit variation.


On the face of things this would seem fairly easy, but in reality it is very tricky as the EA often ask for all kind of information, which might extend to activities outside of the variation.


For example if you were to vary the permit because you are installing a new boiler over 1 MW, they may also ask you to provide new emissions data on your abatement system for dust extract.


More often than not things can and do inflate past the requirements for what logically might be expected when varying an environmental permit.


If you would like to find out more please call for a no obligation chat.



Friday, 13 December 2019

Flood Risk Assessment - Bristol

Flood Risk Assessment - Bristol 

Southwest Environmental Limited have recently been commissioned to prepare a flood risk assessment for a site in Bristol (Avonmouth). The site is subject to tidal flooding and, as if typical with the majority of the Avonmouth area, is low lying.

Avonmouth - Docks

Key factor explored in the flood risk assessment will be the anticipated flood depths from tidal, fluvial and pluvial (rain) flooding, and then design of mitigate measures.

In this instance the application is retrospective which will create further challenges. We will have to make sue of the current site lay out, existing outbuildings and other factor in order to present a positive proposal.

The report will include a Exception Test and Sequential Test

Image rights

English: The Royal Edward Dock at Avonmouth, 13 March 2014.
Source Own work
Author N. Johannes

Wednesday, 27 November 2019

Independent Review of Planning Documents - St Albans

Independent Review of Planning Documents - St Albans

We have recently been offered a small job by St Albans Council to look over a Planning Application, and provide steering on likely Environmental Impacts to the development.

The situation is quite unusual in that the a housing development was being assessed on the basis of proposed impacts from a large mineral working & landfill scheme, that had not yet commenced. 

The mineral working (quarry) scheme in question had been approved by environmental permitting, but planning permission was still pending at the time of our review.

We reviewed the extensive Environmental Impact Assessment that had been submitted in support of the Quarry & Landfill Application.

We made review of the following Environmental Impact Assessment chapters:

  • Noise Impact
  • Dust Impact 
We also recommended for further assessment in following areas:

  •  Bio Aerosol
  • Odour 
The main benefit to the local populace was the restriction of the sites operating hour to standard business hours.

Bio Aerosol and Dust risks typically fall away quite quickly at a distance of 250m from source, as the housing site was within 250 meters of the proposed quarry and landfill we recommended further assessment in these areas.

Wednesday, 9 October 2019

Surface Water Drainage Reporting - Essex

Surface Water Drainage Reporting - Essex

Acting on instructions from a repeat client we have prepared a number of drainage reports and plans for a project in Thurrock , Essex.

The work included a BRE 365 Report, A Surface Water Drainage Strategy and a Detailed Drainage Plan.

Surface water drainage requirements have become more and more onerous over the last few years, and you can expect a good deal of detail to be required at planning.

We used falling head test results from borehole soak-away tests to derive a required soak-away size in accordance with BRE 365.

We were then able to work up a detailed drainage scheme, include attenuation volumes, and drainage layout, drainage details and invert / cover levels.

Friday, 16 August 2019

BRE365 Soak-Away Testing in Gloucester

BRE365 Soak-Away Testing in Gloucester

SWEL recently received a phone call from a company in Gloucester who needed a BRE 365 soak-awat report for a planning application. They happened to have a digger and a water supply on site, so we attended site on the same day to take measurements etc. and produce a report (the following day).

We also included some surface water drainage strategy in the report, and made a robust conclusion that will hopefully see that the planning related matters are satisfied.

A Large Excavator

The digger used was really rather karge for the job, we would normally use a 2.5 ton digger. But in this instance we had a 20 ton beast, with a 1.5m wide bucket. Needless to say the holes were quite large.

If you require some soak-away testing undertaking we can help out, maybe not on the same day as we did here but we will do our best.

Foul and Surface Water Drainage

Wednesday, 19 June 2019

Desktop Study - Margate

Desktop Study - Margate

Southwest Environmental Limited has recently been commissioned to undertake a Desktop Study Report in Margate, UK (there is one in the USA too). 

The report will use maps, historical information and other data to make a review of the site in terms of likely hood of contaminated land. 

We are providing the report on a quick turnaround in less than 5 working days. 

SWEL have been providing quality desktop reports to industry and individuals for over a decade.

This report is for a residential development.