South Norfolk Village Clusters Housing Allocations Plan (Reg. 18 Draft)

Comment

Representation ID: 2178

Received: 14/07/2021

Respondent: Norfolk County Council - LLFA

Please see attachments for full response.
Few or no constraints. Standard information required at a planning stage
1.] At risk of surface water flooding?: Yes * 3.33% AEP Event [Extent]: No flooding present * 3.33% AEP Event [Depth]: No flooding present. * 1.0% AEP Event [Extent]: Minor flooding * 1.0% AEP Event [Depth]: 0.00 - 0.30cm. * 0.1% AEP Event [Extent]: Minor flooding * 0.1% AEP Event [Depth]: 0.00 - 0.60cm.
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): No 4.] Surface water sewer systems?: * On-site: No * Within proximity to site (~100.00m): No 5.] Source Protection Zone?: Source Protection Zone 3 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.
Assessment: Green

The referenced site has been submitted as two separate polygons. We have reviewed and commented on the site as both polygons combined.The on-site flood risk forms a minor flow path in the 0.1% AEP event, contributing to a major flow path off-site in the 0.1% AEP event. Flood risk is concentrated to the southern boundary of the northern polygon and eastern boundary of the southern polygon. Flow lines indicate flood water flows east off of the site. We advise this must be considered in the site assessment.The road between the two polygons is affected by flood risk in the 0.1% AEP event. We advise this must be considered when assessing access to the site.There is opportunity to mitigate the flood risk leading off of the site.The majority of the site is unaffected by flood risk and has potential to be developed.

Comment

Representation ID: 2179

Received: 14/07/2021

Respondent: Norfolk County Council - LLFA

Please see attachments for full response.
Few or no constraints. Standard information required at a planning stage.
1.] At risk of surface water flooding?: Yes * 3.33% AEP Event [Extent]: Minor flooding * 3.33% AEP Event [Depth]: 0.00 - 0.60cm. * 1.0% AEP Event [Extent]: Minor flooding * 1.0% AEP Event [Depth]: 0.00 - 0.60cm. * 0.1% AEP Event [Extent]: Minor flooding|Moderate flooding * 0.1% AEP Event [Depth]: 0.00 - 0.60cm. 2.] Internal & external flooding?: * On-site: No * Within proximity to site (~500.00m): Yes - External Flooding 3.] Watercourses [Online ordinary watercourses or mains rivers]?: * On-site: No * Within proximity to site (~100.00m): No 4.] Surface water sewer systems?: * On-site: Yes * Within proximity to site (~100.00m): Yes 5.] Source Protection Zone?: Source Protection Zone 3 6.] Internal Drainage Board?: No IDB referenced 7.] The site predominantly has superficial deposits of SAND AND GRAVEL. 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 forms the start of a minor/moderate flow path in the 0.1% AEP event, contributing to a major flow path adjacent to the site in the 0.1% AEP event. Flood risk is concentrated to the centre/west of the site with water flowing north off of the site. We advise this must be considered in the site assessment.There is opportunity to mitigate the flood risk leading off of the site.A large area of the site is unaffected by flood risk and has potential to be developed.

Assessment: Green

Comment

Representation ID: 2180

Received: 14/07/2021

Respondent: Norfolk County Council - LLFA

REVA:
Please see full response.
Few or no constraints. Standard information required at a planning stage.

1.] At risk of surface water flooding?: Yes * 3.33% AEP Event [Extent]: Minor flooding * 3.33% AEP Event [Depth]: 0.00 - 0.90cm. * 1.0% AEP Event [Extent]: Minor flooding * 1.0% AEP Event [Depth]: 0.00 - 0.90cm. * 0.1% AEP Event [Extent]: Minor flooding|Moderate flooding * 0.1% AEP Event [Depth]: 0.00 - 1.20cm. 2.] Internal & external flooding?: * On-site: No * Within proximity to site (~500.00m): Yes - Internal Flooding 3.] Watercourses [Online ordinary watercourses or mains rivers]?: * On-site: No * Within proximity to site (~100.00m): No 4.] Surface water sewer systems?: * On-site: No * Within proximity to site (~100.00m): Yes 5.] Source Protection Zone?: Source Protection Zone 3 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 forms a minor/moderate flow path in the 0.1% AEP event, contributing to a major flow path south of the site. Flood risk is concentrated to the eastern/southeastern site boundary with flow lines indicating water flow south off of the site. We advise this must be considered in the site assessment.We advise there is opportunity to mitigate the flood risk leading off of the site. A large area of the site is unaffected by flood risk and has potential to be developed.

REVB:
Few or no constraints. Standard information required at a planning stage.
1.] At risk of surface water flooding?: Yes * 3.33% AEP Event [Extent]: No flooding present * 3.33% AEP Event [Depth]: No flooding present. * 1.0% AEP Event [Extent]: No flooding present * 1.0% AEP Event [Depth]: No flooding present. * 0.1% AEP Event [Extent]: Minor flooding * 0.1% AEP Event [Depth]: 0.00 - 0.60cm. 2.] Internal & external flooding?: * On-site: No * Within proximity to site (~500.00m): Yes - Internal Flooding 3.] Watercourses [Online ordinary watercourses or mains rivers]?: * On-site: No * Within proximity to site (~100.00m): No 4.] Surface water sewer systems?: * On-site: No * Within proximity to site (~100.00m): No 5.] Source Protection Zone?: Source Protection Zone 3 6.] Internal Drainage Board?: No IDB referenced 7.] The site predominantly has superficial deposits of CLAY AND SILT. Comments on infiltration potential are dependent on a complete geotechnical investigation, including BRE365 Soakaway Testing. Where possible, surface water infiltration should be utilised.

Flooding on-site is very minor, concentrated to the southern boundary/road area.The site is immediately adjacent to another allocated site (Ref: SN0274REVA). Consideration of how each site may impact each other/off-site flood risk must be considered in the site assessment.

OVERALL: Green

Comment

Representation ID: 2271

Received: 14/07/2021

Respondent: Norfolk County Council - LLFA

1.] At risk of surface water flooding?: No
* 3.33% AEP Event [Extent]: No flooding present
* 3.33% AEP Event [Depth]: No flooding present.
* 1.0% AEP Event [Extent]: No flooding present
* 1.0% AEP Event [Depth]: No flooding present.
* 0.1% AEP Event [Extent]: No flooding present
* 0.1% AEP Event [Depth]: No flooding present.
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): No
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.