Pol01 Minimising watercourse pollution – Above Green

(2 credits available)

Aim

To reduce the risk of polluting natural watercourses through contaminated surface run-off entering drainage systems.

Question

Are there light-liquid separators fitted within the drainage system to vehicular areas?

Credits	Answer	Select a single answer
0	A	Question not answered
0	B	No
2	C	Yes, light-liquid interceptors are installed within the drainage system where potential sources of pollution exist

Assessment criteria

Criterion

Assessment criteria

Applicable answer

Filtering

Where the asset does not require light liquid separators, the associated credits can be filtered out of the assessment. Assessor will need to confirm that there are no areas at risk of pollution.

External hard standing areas that serve the asset need to be assessed. Those that present a risk of watercourse pollution, and require light-liquid/oil separators, include:

Vehicle maneuvering areas
Car parks
Communal waste disposal facilities
Delivery and storage facilities
Plant areas

Specific notes

Asset type specific

Indoor parking If the design team can demonstrate that there will be no water run-off from indoor parking the credit can be awarded by default. This is because there would be a greatly reduced possibility of water course pollution from hydrocarbons. Such evidence would need to demonstrate that water courses will be protected from hydrocarbons, both from spillage from vehicles and water ingress from outside.

Evidence

Criteria	Evidence requirement
-	The evidence below is not exhaustive, please also refer to the ‘BREEAM evidential requirements’ section in the scope of the Guidance for appropriate evidence types which can be used to demonstrate compliance.
2	Photographic evidence of separator equipment installed on-site
2	Site plans detailing location of separators.
2	Site plans or the Assessor’s site inspection report confirming that the site has no areas in the development with the potential to pollute watercourses.

Definitions

Light-liquid/oil separators:

A part of a surface water drainage system, into which potentially contaminated wastewater flows. Light, freefloating liquids (such as oil) are separated from the wastewater by means of gravity or coalescence, and retained.

Watercourses:

A term that includes rivers, streams, ditches, drains, culverts, dykes, sluices, sewers and passages through which water flows.