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Porton Down
Additional Magazine Storage Facility
Location - adjacent to Porton Down SSSI
Site Location
Porton Down is a Site
of Special Scientific
Interest (SSSI) notified
under the 1981 Wildlife
and Countryside Act
and covers about 1200
hectares.
It constitutes the largest
uninterrupted tract of
semi-natural chalk
grassland in Britain, a
habitat which
elsewhere has declined
by more than 80% in
the last 50 years.
As well as the
grassland there are
areas of juniper scrub
and of broadleaved,
mixed and coniferous
woodland.
32 Ha of existing arable / pasture land, adjacent to Porton Down SSSI, - areas 7 & 8, SAC and SPA
Stone-curlews nest on open, bare
ground or in areas with vegetation
height below 2 cm.
Stone Curlew Burhinus oedicnemus
It is a medium-sized wader with a strong
yellow and black beak, large yellow eyes and
cryptic plumage. The bird is striking in
flight, with black and white wing markings.
Despite being classed as a wader, this
species prefers dry open habitats with some
bare ground. It is largely nocturnal. Food
consists of insects and other small
invertebrates. It lays 2-3 eggs in a narrow
scrape in the ground.
Stone Curlew nesting sites
2010 – nearest to site is
250m to north east.
Need – “H&S imperative” Alternatives – “none”
Need:
Local, safe, sufficient
and secure storage
explosives materials.
Alternatives:
Feasibility study
identified none.
Total storage quantity
reduced and design
altered to fit site.
Alternatives: Dstl Porton Down, although 7000 acres, is limited to approx 800 acres of potential development land as approx
2/3rds of the site is designated as an SSSI/SAC/SPA.
The location of the new additional magazine storage facility in relation to other facilities/buildings within the site has to be
taken into consideration such that they and the personnel within them are not put at risk.
In 2006 a Dstl feasibility study was undertaken to review potential sites; the Met Field site was found to be the only suitable
and practicable location.
Archaeology
Layout
19 separate specialist structures - 17 surrounded by traverses, plus; roadways & tracks, security perimeter fencing &
CCTV, emergency water stores, lorry and car parking, electricity sub station, administration gatehouse, PV array, landscaping
and habitat creation / enhancement.
Buildings
Landscaping
“Random” scrub and
juniper enhancement.
Traverses towards
south, grass covered.
Open aspect retained.
Fences & Traverses
Perimeter
security
lighting
& CCTV
Perimeter security lighting
lamps, (90 watt), are
mounted on 8m
poles, within security
fenceline and are
designed to provide;
controlled low
level, minimum even
illuminance, downwards
of just 3 Lux, outside the
fence.
Dark purple line indicates
3 lux level.
CCTV cameras, using
infra red lighting, are
mounted on poles within
security fence - fixed at
50m intervals and mobile
at 100m plus corners.
Infrastructure.
Roads, tracks, s
wales and
bund.
Swales, (1m
deep), provide
SUDs and 1 in 30
year flooding
protection.
Bund provides 1 in
100 year flooding
protection.
Porton Down
Additional Magazine Storage Facility.
Full – conditional - planning approval
achieved April 2012.
John Wilde ARB RIBA Pg Dip Arch Cons.
Registered and Chartered Architect.
07919892135
4 Crestfield Rise Ivybridge Devon. PL21 9TJ
