Comment

Representation ID: 2143

Received: 14/07/2021

Respondent: Norfolk County Council - LLFA

SN2183
See attachment for full comments
Significant mitigation required for severe constraints. Recommend a review of the site and potential removal from the local plan.
1.] At risk of surface water flooding?: Yes
* 3.33% AEP Event [Extent]: Major flooding
* 3.33% AEP Event [Depth]: 0.00 - 0.60cm.
* 1.0% AEP Event [Extent]: Major flooding
* 1.0% AEP Event [Depth]: 0.00 - 0.60cm.
* 0.1% AEP Event [Extent]: Major flooding
* 0.1% AEP Event [Depth]: 0.00 - 0.90cm.
2.] Internal & external flooding?:
* On-site: No
* Within proximity to site (~500.00m): Yes - Internal Flooding|Yes - External Flooding
3.] Watercourses [Online ordinary watercourses or mains rivers]?:
* On-site: No
* Within proximity to site (~100.00m): Yes|Ordinary Watercourse
4.] Surface water sewer systems?:
* On-site: No
* Within proximity to site (~100.00m): No
5.] Source Protection Zone?: No
6.] Internal Drainage Board?: No IDB referenced
7.] The site predominantly has superficial deposits of DIAMICTON. Comments on infiltration potential are dependent on a complete geotechnical investigation, including BRE365 Soakaway Testing. Where possible, surface water infiltration should be utilised." "The on-site flood risk is a major flow path in the 3.33%, 1.0% and 0.1% AEP events. It forms off-site in and affects the eastern side of the site, extending west across the site as events increase. Flow lines indicate this flood water flows southeast off of the site. We advise this must be considered in the site assessment.

Access to the site appears to be heavily affected by the on-site flood risk.

A small area of the site is unaffected by flood risk (west and southwest). We would advise that inclusion of this site in the plan is reassessed.

Assessment: Red