07 - Pollution

Air conditioning and cooling - KBCN0373

Energy used for air conditioning and cooling systems should not be included when assessing NO_x emissions.

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CHP NOx emission conversion - KBCN0592

If the CHP manufacturer cannot provide the NOx emissions in mg/kWh it is not possible to award any credits. The CHP manufacturer must provide the NOx emissions in mg/kWh, the conversion factors provided in the Technical Manual can only be used for boilers.

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Flood risk – Site situated across numerous flood zones - KBCN0532

Where a site is situated across more than one flood zone, the flood zone with the highest probability of flooding, i.e. the worst case scenario, must be considered for the purpose of the BREEAM assessment. An exception to this would be where the areas in the higher probability zone include only soft landscaping and it can be demonstrated that access to the building will be maintained in a flooding event. This is to ensure that the site has adequately managed the worst case scenario level of flood risk associated with the site's location. 

22/07/2022 Applicability to HQM One confirmed
07/03/2018 Updated to include circumstances where an exception may apply.

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Flood risk – Using PPS25 to carry out a FRA - KBCN0252

Although the government has scrapped PPS25, assessors can continue to use either this guidance or the more recent online guide, 'Flood risk and coastal change' - http://planningguidance.communities.gov.uk/blog/guidance/flood-risk-and-coastal-change/ The PPS25 document referred to in the manual is still considered good practice  

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Grid NOx emission factors - KBCN0151

The Grid NOx emission factors should be compliant and relevant to the scheme of the development under assessment i.e. BREEAM NC 2011/ 2014 or BREEAM 2008. In the same way that we do not apply the more stringent requirements of some BREEAM NC 2011 / 2014 Issues retrospectively to 2008 schemes, for a BREEAM 2008 scheme, the emission figures stated in the relevant manual must be used.

09 Aug 2023 - Applicability to IRFO 2015 removed due to conflict with the guidance.

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Heat pumps powered by renewable energy - KBCN0422

Where renewable energy is used partially to offset grid electricity in heat pumps, this can contribute towards a reduction in equivalent NOx emissions. To account for seasonal variations in renewable energy generation, this must be calculated over the course of a year.

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[KBCN withdrawn] ~ Flood risk – Environment Agency (EA) confirm the site is in ‘low flood risk’ area This KBCN has been withdrawn and is no longer valid. This is because its content was created on the basis of a very specific case and should not be applied generally. EA confirmation is no more robust or detailed than reference to flood maps, which are not in themselves compliant without a FRA.

KBCN withdrawn on 17/03/17:

If the EA have confirmed, in writing, that the site has a low flood risk and that a Flood Risk Assessment (FRA) is not required then this is acceptable and the two credits can be awarded. The EA's written confirmation is a sufficient indication that an appropriate level of flood risk assessment has been completed. Please note that the use of the EA flood maps without this additional confirmation is not acceptable.

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