Decision details

RESOLVED: That application 25/01790/FP be GRANTED planning permission subject to the conditions set out in the report of the Development and Conservation Manager, with additional Conditions 15 and 16 as follows:

‘Condition 15

Construction shall not begin until a detailed surface water drainage scheme for the site has been submitted to and approved in writing by the Local Planning Authority. The surface water drainage scheme must prioritise the use of source control Sustainable Drainage Systems (SuDS) in consideration of the Non-Statutory Technical Standards for SuDS and demonstrate no increase in flood risk as a result of the Proposed Development with sufficient supporting evidence provided to support its viability including supporting calculations for the 100% AEP (1 in 1 year), 3.33% AEP (1 in 30 year), 3.33% AEP (1 in 30 year) plus climate change, the 1% AEP (1 in 100 year) and the 1% AEP (1 in 100) plus climate change critical storms. Infiltration testing shall be carried out to inform the detailed drainage design; if infiltration is not viable, a detailed drainage strategy based on discharging to the ordinary watercourse south of Snailswell Lane at the greenfield runoff rate shall be submitted to the Local Planning Authority. The scheme shall subsequently be implemented in accordance with the approved details before the development is completed.

Reason: To ensure the flood risk is adequately addressed and not increased in accordance with NPPF and Policies of North Hertfordshire District Council.

Condition 16

In the event that contamination is found at any time when carrying out the approved development, it shall be reported in writing immediately to the Local Planning Authority. An investigation and risk assessment shall then be undertaken by a competent person, in accordance with BS10175:2011. A written report of the findings should be forwarded for approval to the Local Planning Authority. Following completion of remedial measures a verification report shall be prepared that demonstrates the effectiveness of the remediation carried out. No part of the development should be occupied until all remedial and validation works are approved in writing.

Reason: To protect human health and to ensure that no future investigation is required under Part 2A of the Environmental Protection Act 1990.’