Coastal Protection Scheme

Project Overview A new coastal defence scheme is proposed at Runswick Bay, North to reduce the risk of erosion to the existing concrete and masonry sea walls to the east and north east of the village. The scheme involves surface repairs to the existing sea wall and the placement of rock armour at the toe of the seawall.

Existing Condition • Undermining through wave action scouring material below the concrete wall • Damage to the existing concrete works • Significant erosion at connections to the cliff

Strategic and Legislative Framework The Runswick Bay Coastal Strategy was developed during 2013/14, and was approved in May 2015, to identify the preferred strategic approach for managing flood and coastal erosion risk to the coastal frontage extending from Thorndale Shaft (to the north) and Ness, , a length of approximately 7 kilometres. It includes the communities of Runswick Bay Village and the smaller settlements of Port Mulgrave and Kettleness. The length of coastline covered by the Strategy is included within the River Tyne to Head Shoreline Management Plan (SMP2). Runswick Bay Coastal Protection Scheme

Environmental Constraints

• Conservation Area • Listed Buildings • Intertidal habitat and foreshore • Landscape and visual aspects • Disturbance to over-wintering birds • Traffic and construction operations

Environmental Enhancement Opportunities

Existing rockpools The Rock Armour placed will be protected, along the sea wall will be rocks colonised by textured with holes & marine life will be scratches to encourage placed within the colonisation by marine new rock armour. life. Runswick Bay Coastal Protection Scheme

Yorkshire Water Works The Yorkshire Water works involved the installation of a new sewer system along the toe of the sea wall. Runswick Bay Coastal Protection Scheme

Indicative Design Runswick Bay Coastal Protection Scheme

Construction

•December 2017 Mobilisation •Establish site compound •Safety signage and public information boards

•Excavation of material at the toe of the wall •Mass fill toe protection poured by on-site Concrete Works concrete truck •Patch repair works to damaged sections of the sea wall

•December 2017/January 2018 •Delivery by barge and offload on to Rock Delivery an approved area on the beach •Organisation of rock into grading categories ready for placement

•Clearing of debris at the toe of the existing Rock Enabling sea wall •Excavation for toe rock placement Works •Compaction of excavated material at the toe of the sea wall

•February 2018 •Placement of rock using two 50 tonne Rock Placement excavators •Plant to work linearly to avoid damage to local ecology

•Placement of existing boulders on the Ecological structure to encourage re-habitisation Enhancements •Placement of rock pool structures at the lower levels of the structure

•Clearing of the site and replacement of any material moved for construction access Demobilisation •Handover to Scarborough Borough Council •April 2018