Location reference: to Trevose Head Management Area reference: MA33 Cliffs at Bedruthan Policy Development Zone: PDZ13 PREFERRED POLICY TO IMPLEMENT PLAN: From present day NAI along undefended cliffs. NAI at Porthcothan (with allowance to HTL (0-20 years) along short road section). NAI at Treyarnon. NAI at . Medium term NAI along undefended cliffs. NAI at Porthcothan (with allowance to HTL (20-50 years) along short road section). NAI at Treyarnon. NAI at Constantine Bay. Long term NAI along undefended cliffs. NAI at Porthcothan (with allowance to HTL (50 -100 years) along short road section). NAI at Treyarnon. NAI at Constantine Bay.

SUMMARY OF SPECIFIC POLICIES Policy Unit SMP1 Policy SMP2 Policy Plan 50 yrs 2025 2055 2105 Comment Undefended Will meet high level objectives and satisfy AONB and 33.1 Do nothing NAI NAI NAI cliffs criteria Probability of some cliff recession adjacent to Hotel and Car Park. Limited assets at risk but the NAI approach should not preclude the Not previously privately funded maintenance of the short section of recently improved Watergate considered 33.2 NAI NAI NAI defences which are present adjacent to the access point onto Watergate Bay individually in Beach, as the importance of these to the local economy is recognised SMP1 and studies have concluded that they would not be detrimental to the overall beach and cliff processes. Pressure on this frontage dictates that a MR approach is required to Mawgan Porth address the risks to the road and rear-of-beach development. The 33.3 Hold the line MR MR NAI – road section longer term aim would be to return the frontage to one which is entirely non-interventional (linked directly to PU33.4). Mawgan Porth Dunes should be allowed to respond naturally to sea level rise and 33.4 Hold the line NAI NAI NAI - dunes continue to provide natural defence. Porthcothan 33.5 Do nothing NAI NAI NAI No economic or environmental justification for defending cliff toe. cliff NAI/(with NAI/(with NAI/(with A non-interventional approach is best to manage dune area but it would Porthcothan 33.6 Hold the line localised localised localised be acceptable to HTL along short section of road adjacent to the rear of beach HTL) HTL) HTL) the beach. 33.7 Treyarnon Do nothing NAI NAI NAI Very little in way of property / assets at risk. Prevent any constraint of natural processes to maintain healthy dune Constantine system and prevent coastal squeeze. NAI would not preclude local, 33.8 Hold the line NAI NAI NAI Bay privately funded maintenance of defences adjacent to the southern end of Constantine Beach. Key: HTL - Hold the Line, A - Advance the Line, NAI – No Active Intervention MR – Managed Realignment

Cornwall and Isles of Scilly SMP2 80 Final Report Chapter 5 Annex I February 201

PREDICTED IMPLICATIONS OF THE PREFERRED PLAN Policy Unit Theme Historic Amenity & Property & Land Use Nature Conservation Landscape Environment Recreational Use Few implications for Preferred plan and NAI approach will Landscape values will be No Recreation and property or land use support high level SMP objectives for supported by the preferred implications. amenity use would Undefended due to low erosion rates nature conservation. plan and will meet objectives not be impacted. 33.1 cliffs and sparse habitation. of the AONB covering the northern part of the frontage. No significant Preferred plan and NAI approach will Landscape values will be No Recreation and Watergate 33.2 implications for support high level SMP objectives for supported by the preferred implications. amenity use would Bay property. nature conservation. plan. not be impacted. Important through route Shoreline would continue to be Landscape would continue to No Recreation and Mawgan Porth 33.3 maintained. modified by defences and natural be modified by defences. implications. amenity use would – road section processes constrained. not be impacted. No significant Shoreline allowed to respond Landscape values will be No Recreation and implications for naturally to sea level rise, benefitting supported by the preferred implications. amenity use would Mawgan Porth 33.4 property. intertidal habitat. plan and landscape quality not be impacted. - dunes allowed to develop without constraints. . Possible loss of 2 or 3 Shoreline allowed to respond Landscape values will be No Recreation and properties in medium to naturally to sea level rise, benefitting supported by the preferred implications. amenity use would Porthcothan 33.5 longer term. intertidal habitat. plan and landscape quality not be impacted. cliff allowed to develop without constraints. . Short section of road Some minor modification due to Landscape generally No Recreation and Porthcothan 33.6 defended and retained. defences. Slight constraint on natural supported but would continue implications. amenity use would beach processes. to be modified by defences. not be impacted. Possible loss of 1 Preferred plan and NAI approach will Landscape values will be No Recreation and property in long term. support high level SMP objectives for supported by the preferred implications. amenity use would 33.7 Treyarnon nature conservation. Shoreline plan and landscape quality not be impacted. allowed to respond naturally to sea allowed to develop without level rise, benefitting intertidal habitat. constraints. Unlikely to be Preferred plan and NAI approach will Landscape values will be No Recreation and significant implications support high level SMP objectives for supported by the preferred implications. amenity use would Constantine 33.8 for property (minor nature conservation. Shoreline plan and landscape quality not be impacted. Bay private defences likely allowed to respond naturally to sea allowed to develop without to remain in place). level rise, benefitting intertidal habitat. constraints.

Cornwall and Isles of Scilly SMP2 81 Final Report Chapter 5 Annex I February 201