The size and density of the KB2 proposed site is not sustainable and insufficient consideration has been given to its environmental impact and accessibility. The site already forms an "appropriate, defensible Green Belt boundary" between Knebworth and the A1(M) motorway, which would be removed by this development. It also suffers from significant existing surface water flooding, including any run-off from the A1(M) which would increase after the proposed widening of the carriageway. Road access to the KB2 site is limited and difficult to expand, as it will create congestion at the insurmountable obstacle of the narrow railway bridge at Gun Lane. Furthermore, development of KB2 risks damaging the architectural and historic character of the adjacent Stockens Green Conservation Area, and extends the South and West boundaries of Knebworth risking coalescence with the neighbouring hamlet of Potters Heath.