Noise, Air, Odour and Light – Page 8
Environmental health topics in planning: noise, air quality, kitchen extraction, odour and lighting.
Noise, Air, Odour and Light articles – page 8
263 articlesPlant noise assessment for a rooftop air source heat pump
Domestic heat pumps rely on a permitted development class with a noise condition attached. Fail the 42 dB(A) calculation at the neighbour's window and you need planning permission.
Construction noise and vibration limits under BS 5228
The limits depend on how quiet the area already is. The threshold categories, the gap between felt vibration and damaging vibration, and why prior consent is worth having.
Internal noise criteria for new homes near a road
35 dB by day, 30 dB in bedrooms at night and peaks below about 45 dB. Meeting those numbers with a ventilation strategy that survives a heatwave is the real design problem.
Background sound level determination and the typical period
Two assessors with the same dataset can report background levels 6 dB apart. The difference is which periods they treated as representative, and why.
Choosing the measurement position for a BS 4142 survey
Two acousticians can reach opposite conclusions on the same plant without an arithmetic error. The measurement position is usually the reason, and it has to be justified in writing.
Biomass boilers and the air quality case for one
A biomass boiler puts combustion emissions at roof level. Here is the air quality case it has to make, and when a heat pump is the simpler consent.
Noise conditions that cannot be enforced, and the fix
Most noise conditions fail on precision and enforceability. Here is why inaudibility wording does not work, and the two-stage structure that does.
Wood burning stoves, smoke control areas and planning
A smoke control area changes what you may burn and in what appliance. The flue is a separate question with its own permitted development limits, and the building regulations height rule does not override them.
Waste transfer station odour: the permit and planning line
Planning decisions must assume the permitting regime works, so odour refusals based on operator behaviour fail on appeal. Here is what planning can still control at a waste transfer station, and the conditions that hold up.
NOEL, LOAEL and SOAEL: the noise exposure hierarchy
The noise hierarchy is a policy device, not a pass or fail test. None of its thresholds has a national value, so an assessment has to derive them for the site.
Lighting a car park: illuminance, uniformity and curfews
Car park lighting schemes fail either on spill at the boundary or on dark corners inside the site. The evidence that resolves both is an isolux drawing with window-by-window vertical illuminance.
Railway vibration and what a condition can require
Vibration and ground borne noise need separate criteria, and construction vibration limits do not apply to an operating railway. Survey design, isolation choices and condition drafting.
How long a background noise survey should run
The background sound level has to be representative, and representativeness has to be evidenced. Survey duration, measurement positions, weather exclusions and the reporting that lets a reviewer check the result.
Commercial kitchen extraction and the EMAQ guidance
Kitchen odour applications are judged against the EMAQ risk based approach. Here is how cooking type, flue termination height, discharge velocity and maintenance decide the outcome.
Odour buffers around a sewage treatment works
Residential land near a wastewater treatment works is decided by dispersion modelling against published odour benchmarks, not by a fixed distance. Here is how the assessment and the layout fit together.
Air quality neutral and the emissions benchmarks
Air quality neutral is a source test, not an exposure test. Here is how building and transport emissions are calculated against benchmarks, and the measures that close a shortfall.
Sound insulation between a venue and the flat above
Music reaches the flat above through the structure at 63 Hz and 125 Hz, where weighted insulation figures say little. Here is how criteria are set, what box-in-box construction can achieve, and how limiter conditions are drafted.
Acoustic fences: when a barrier actually reduces noise
A garden acoustic fence works only where it breaks the line of sight to the source. Height, mass, gaps, road noise, plant screening and the height limit.
Construction vibration: damage limits and human response
Peak particle velocity thresholds for building damage sit far above the levels at which residents complain. How to predict, monitor and manage the gap.
Combining noise, odour and air quality in one submission
Separate consultants produce mitigation that conflicts. Shared receptor schedules, a frozen layout and one coordinated conditions table prevent the holding objection.
Restaurant extraction ducts: routes and termination
A kitchen extract duct has to reach roof level through space you have the right to use. How routes, termination height, odour risk and plant noise decide a restaurant application.
Play noise from schools and nurseries in planning decisions
No British Standard sets a limit for children playing outdoors. How play noise is really assessed, what acoustic fencing delivers, and which conditions are enforceable.
The agent of change principle and how decisions apply it
Agent of change puts mitigation on the incoming development, not on the established business. Here is what it requires, how objections are won on survey evidence, and where the policy stops.
Noise-sensitive development beside a railway line
Beside a railway the night maximum level usually decides the scheme, not the average. Here is how to survey it, specify the facade and judge whether vibration isolation is proportionate.
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