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ATMOS Redevelopment, Totnes, South Devon

Client: Totnes Community Development Society

Atmos is a community-led redevelopment project aimed at regenerating the 3.5ha derelict industrial Dairy Crest site in the heart of Totnes. The site lies adjacent to Totnes railway station and the River Dart; is crossed by the historic Mill Leat that served various mills located within the town of Totnes; and includes the locally iconic Grade 2 listed Brunel Building. The site has lain derelict since 2007.

The redevelopment includes housing and enterprise space and is being developed under a Community Right to Build Order, granted by South Hams District Council in Spring 2017.

JGP is part of the design team working on behalf of the client, and since 2015 has provided various civil and geotechnical support:

Flood Risk Assessment

Approximately two thirds of the site is designated as at risk of flooding, the majority of which is in a functional flood plain. JGP devised a scheme in consultation with the EA to reduce flood risk on site to acceptable levels. The scheme involved various mitigation measures, including raising site levels in the development area by 1.5m and lowering levels on another part of the site to compensate for the loss of flood plain.

Transport Assessment / Statement

This accounted for notable traffic access issues (an awkward junction at the access point that connects to one of the busiest roads in the region) and the proximity of the railway station. The transport assessment uses sustainable modes of transport to minimise use of cars on site. Residents and businesses owners will need to enter into a contract with TCDS to use the Society’s car share club for all their transport needs. The assessment is being seen as best practice following models being used in Holland, Germany and parts of the US.

Geotechnical Ground Investigation

The GI included trial pits, boreholes (rotary & windowless sampling), hand-held DCPs, infiltration tests and geotechnical testing to establish ground conditions and depth to suitable bearing strata to inform the foundation rationale for the new access bridge across the Mill Leat, the new build residential apartments and dwellings, commercial units and the refurbishment and extension of the Grade II Listed Brunel Building. The GI also provided geotechnical advice for drainage design, roads, retaining structures, the re-use of site materials, the raising of site levels in the North Site (as a flood risk protection measure) and the excavation of materials towards the northern site boundary (to create a wetland / flood alleviation area).