Page 36 - Eden Meadow 35 houses application as of 12 October

LAND TO THE REAR OF EDEN MEADOWS, NEWINGTON

AIR QUALITY ASSESSMENT

Significance Criteria

Construction Phase

4.29 The risk of dust arising in sufficient quantities to cause annoyance and/or health and/or
ecological impacts should be determined using four risk categories: negligible, low, medium

and high risk. A development is allocated to a risk category based on two factors:

• the scale and nature of the works, which determines the potential dust emission

magnitude as small, medium or large (see Table 7); and

• the sensitivity of the area to dust impacts, which is defined as low, medium or high
sensitivity. These risk categories are defined in detail within Boxes 6 to 8 of the IAQM

guidance.

4.30 These two factors are combined to determine the risk of dust impacts with no mitigation
applied (see Table 8). The risk category assigned to the development can be different for

each of the four potential activities (demolition, earthworks, construction and track out).

Table 7 – Dust Emission Magnitude

Dust Emission Class
Activity
Large Medium Small
Total building volume Total building volume <20,000
3
3
>50,000 m , potentially dusty Total building volume 20,000 – m , construction material with
3
construction material (e.g. 50 000m , potentially dusty low potential for dust release
Demolition concrete), on-site crushing construction material, (e.g. metal cladding or timber),
and screening, demolition demolition activities 10-20 m demolition activities <10m
activities >20 m above above ground level above ground, demolition
ground level during wetter months
2
Total site area >10,000 m ,
potentially dusty soil type Total site area 2,500 – 10,000 Total site area <2,500 m , soil
2
2
(e.g. clay, which will be prone m , moderately dusty soil type type with large grain size (e.g.
to suspension when dry due (e.g. silt), 5-10 heavy earth sand), <5 heavy earth moving
to small particle size), >10 moving vehicles active at any vehicles active at any one
Earthworks
heavy earth moving vehicles one time, formation of bunds 4 time, formation of bunds <4 m
active at any one time, m - 8 m in height, total in height, total material moved
formation of bunds >8 m in material moved 20,000 tonnes <10,000 tonnes, earthworks
height, total material moved – 100,000 tonnes during wetter months
>100,000 tonnes
Total building volume 25,000
Total building volume 3 Total building volume <25,000
3
3
>100,000 m , piling, on site m3 – 100,000 m , potentially m , construction material with
Construction dusty construction material
concrete batching; low potential for dust release
sandblasting (e.g. concrete), piling, on site (e.g. metal cladding or timber)
concrete batching
>50 HDV (>3.5t) trips in any 10 – 50 HDV (>3.5t) trips in
one day, potentially dusty any one day, moderately dusty <10 HDV (>3.5t) trips in any
Track out surface material (e.g. high surface material (e.g. high clay one day, surface material with
clay content), unpaved road content), unpaved road length low potential for dust release,
unpaved road length <50 m.
length >100 m 50m – 100 m;

Lustre Consulting Ltd
Report Ref.: 3143/MD/07/2020 Page No. 30