Report Deep Dives

The ground gas assessment section of a Phase 2 report

Monitoring in settled weather, flow readings at the resolution limit and a characteristic situation with no source behind it are the three failures reviewers see most. What a defensible ground gas section contains.

The background sound survey in a Noise Impact Assessment

The LA90 background sets everything else in a BS 4142 rating. Measurement positions, representative periods, calibration records and the uncertainty a reviewer will look for.

The scope and modules of a Whole Life Carbon Assessment

Upfront, embodied and whole life carbon are three different figures from different module sets. The scope errors that get assessments rejected, and the assumptions that move the result.

The carbon offset and monitoring sections of an Energy Statement

Offsetting deals with what is left after fabric, plant and renewables. The residual calculation, the obligation drafting, the metering strategy and who reports once units are sold.

The sustainable transport section of a Transport Assessment

Trip generation is arithmetic, accessibility is judgement. Isochrones instead of circles, LTN 1/20 route quality, honest bus evidence and measures that can actually be secured.

Survey constraints and limitations in an ecology report

The limitations section tells a reviewer what the surveyor could not see. Seasonal windows, refused access, record age and confidence levels, and when to say the survey is inadequate.

Receptor sensitivity grading in an odour assessment

Two receptors with identical modelled exposure can attract different conclusions. Grading sensitivity receptor by receptor, with the reasoning recorded, is what makes an odour assessment defensible.

Report Deep Dives9 min read

Travel plan targets and survey methodology that hold up

A travel plan target only works if someone can measure it later. Here is how to fix the baseline, the mode, the number and the date so the monitoring obligation can actually be discharged.

Obtrusive light calculations in a lighting assessment

An over-generous environmental zone makes everything else comply. What each obtrusive light calculation measures and the inputs a reviewer should insist on.

Deliverability and phasing in an affordable housing statement

A compliant tenure split is the easy part. How to evidence registered provider interest, set delivery triggers and keep service charges from killing the offer.

Evacuation strategy at planning stage: what to fix early

Stay put or simultaneous evacuation is a massing decision, not a Building Regulations detail. What the fire statement asks, and what the answer does to your core.

Fire service access and water supply in a fire statement

Appliance routes, standing positions and hydrants set hard dimensions at planning stage. Leaving them to the fire engineer after submission usually means moving a building.

Alternatives and scoping inside an environmental statement

The 2017 Regulations tie the alternatives chapter to what the developer in fact studied, and a scoping opinion binds the statement that follows. Both are regularly mishandled.

Social infrastructure evidence for sixty new flats

Contributions on a sixty-flat scheme are decided by child yield, capacity evidence and regulation 122. Here is what the assessment has to quantify and where the council's figures usually give way.

The development description chapter of an environmental statement

The development description decides what every other chapter of an environmental statement can say. What Schedule 4 requires and how to handle reserved detail.

Ground gas monitoring regimes in a Phase 2 report

Gas monitoring fails on too few visits, none in falling pressure, and flow rates recorded as zero. How to design a programme that survives a contaminated land officer.

Background sound level selection in a noise assessment

The selected background level moves a BS 4142 result more than the plant data does. How to read the distribution, justify exclusions and document the choice.

Desk study radius in an ecological appraisal

The search radius in an ecological appraisal decides what the report can conclude. How to set it from impact pathways, and how to handle record age and nil returns.

Lighting evidence for a padel court beside housing

Floodlit padel courts beside housing are decided on light intrusion at bedroom windows and the curfew offered. Here is the evidence that answers both.

Archaeology evidence on a site already disturbed

Previous development reduces archaeological potential without removing it. The assessment has to show how deep the truncation went, across how much of the footprint, and what survives beneath.

Loss of a single employment unit: the evidence needed

Councils protect employment premises as well as allocated land, so even a 180 m2 lock-up engages policy. The marketing file, the condition schedule and the local demand evidence are what decide a single unit case.

Green infrastructure evidence for a school expansion

A new teaching block usually lands on the only open part of a school site. Here is the evidence each consultee needs, and the order to produce it in.

Townscape evidence for a roof extension in a terrace

A terrace roof extension is assessed against the roofscape of the group, not the single house. Here is the survey, the proportions and the views that make the case.