6.4 Appendix 9.4 Potential Effects On
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Southampton to London Pipeline Project Volume 6 Environmental Statement (Volume D) Appendix 9.4: Potential Effects on the Historic Environment Application Document: 6.4 Planning Inspectorate Reference Number: EN070005 APFP Regulation No. 5(2)(a) Revision No. 1.0 May 2019 (This page is intentionally left blank) Southampton to London Pipeline Project Environmental Statement Appendix 9.4: Potential Effects on the Historic Environment Contents Appendix 9.4 Potential Effects on the Historic Environment ............................................................................ 1 1.1 Construction ................................................................................................................................................. 1 1.2 Operation ................................................................................................................................................. 434 Page i of Appendix 9.4 Southampton to London Pipeline Project Environmental Statement Appendix 9.4: Potential Effects on the Historic Environment Appendix 9.4 Potential Effects on the Historic Environment 1.1 Construction 1.1.1 Potential effects on the historic environment during construction have been assessed in the absence of the Archaeological Mitigation Strategy (AMS) (Appendix 9.5) and other good practice measures. Good practice measures are set out in the Register of Environmental Actions and Commitments (REAC) (Chapter 16 Environmental Management and Mitigation) and secured through Development Consent Order (DCO) requirements such as the Code of Construction Practice (in Appendix 16.1 Code of Construction Practice). 1.1.2 No residual significant effects have been identified assuming the AMS and other good practice measures. 1.1.3 Table 1.1 outlines potential impacts resulting in a significance of effect of moderate or above, i.e. a significant effect in Environmental Impact Assessment (EIA) terms, prior to good practice measures during construction. Table 1.2 outlines potential impacts resulting in a minor or negligible significance of effect, i.e. not a significant effect in EIA terms, prior to good practice measures during construction. Table 1.3 outlines heritage assets upon which no impact is predicted during construction. 1.1.4 No physical impacts on historic buildings are predicted unless otherwise stated. Table 1.1 Heritage Assets with Potential Impacts Resulting in Significant Effects Prior to Good Practice Measures During Construction Asset Site Name Value Potential Impact Potential Magnitude Significance Good Practice Residual Residual Number Description - Construction Impact of Effect Measures or Magnitude Significance Duration Mitigation 83 Remnants Of Low This heritage asset lies Permanent Moderate Moderate Measures presented Negligible Negligible A Medieval Or partially within the Order Adverse within the Later Field Limits at a point where the Archaeological System South pipeline route runs adjacent Mitigation Strategy Of Durley to the existing pipeline. There (AMS) would be taken Street is therefore a high potential to protect or preserve for pre-existing impact to any in situ or by record any archaeological remains significant which may be present. There archaeological is also the potential for partial remains that may be damage or removal of Assets found (G67). 1553 and 1554 which form Page 1 of Appendix 9.4 Southampton to London Pipeline Project Environmental Statement Appendix 9.4: Potential Effects on the Historic Environment Asset Site Name Value Potential Impact Potential Magnitude Significance Good Practice Residual Residual Number Description - Construction Impact of Effect Measures or Magnitude Significance Duration Mitigation part of the setting of this heritage asset; however this is also likely to have a pre- existing impact from the existing pipeline route at this location. There is therefore the potential for some further partial damage or destruction to this heritage asset and its setting such that it would be clearly modified. 92 Guidepost, Low This guidepost is situated Permanent Major Moderate Where there is known No Negligible Stephens near to the edge of the Order Adverse archaeology that is not Change Castle Down Limits at an intersection that being removed and is within the area of a recorded, appropriate proposed Haul road. There is protection measures the potential for this heritage would be asset to be damaged or implemented. This removed during construction could include signage of the project which could and fencing, and result in a change to most or reduction or avoidance all key archaeological of topsoil stripping materials, such that the where practicable resource is totally altered. (G70). 94 Stephen's Medium This heritage asset is Permanent Major Major Measures presented Negligible Minor Castle Down situated within the boundary Adverse within the AMS would Adverse of a construction compound be taken to protect or and near to the preserve in situ or by drive/receiving pit for an record any significant auger bore trenchless archaeological crossing. While the remains that may be geophysical survey data did found (G67). not identify archaeological remains at the specific Page 2 of Appendix 9.4 Southampton to London Pipeline Project Environmental Statement Appendix 9.4: Potential Effects on the Historic Environment Asset Site Name Value Potential Impact Potential Magnitude Significance Good Practice Residual Residual Number Description - Construction Impact of Effect Measures or Magnitude Significance Duration Mitigation location of this HER record, this does not negate the possibility that these archaeological remains are present. Based on available information pertaining to the water level for this location, the water table is not expected to be intercepted during auger boring at a depth of 6.0mbgl and thus dewatering is not likely to occur at this location. However, there is the potential for complete or partial removal of archaeological remains associated with this heritage asset indicating a change to most or all key archaeological materials, such that the resource is totally altered. 308 WWII Aircraft Low The exact location and Permanent Major Moderate Measures presented Negligible Negligible Crash Site, potential for in situ remains of Adverse within the AMS would Near the crash are unclear; be taken to protect or Westbrook particularly considering that preserve in situ or by Grange the Order Limits at this record any significant location are parallel to the archaeological existing pipeline indicating a remains that may be high potential for pre-existing found (G67). impact if these archaeological remains had been present. However, the location provided by the HER Page 3 of Appendix 9.4 Southampton to London Pipeline Project Environmental Statement Appendix 9.4: Potential Effects on the Historic Environment Asset Site Name Value Potential Impact Potential Magnitude Significance Good Practice Residual Residual Number Description - Construction Impact of Effect Measures or Magnitude Significance Duration Mitigation is within 100m of the Order Limits and the potential for a physical impact on these remains cannot therefore be ruled out. If remains are encountered, these would be automatically be designated as a Protected Place under the Protection of Military Remains Act 1986, and a licence would be required from the Secretary of State before any further disturbance of the remains could be undertaken. If remains associated with the plane are encountered and removed under licence during construction, the would have the potential for a change to most or all key archaeological materials, such that the resource is totally altered. 648 Pyestock/Basi Low This heritage asset is Permanent Major Moderate Where there is known No Negligible ngstoke Canal situated near to the edge of Adverse archaeology that is not Change Boundary the Order Limits and within being removed and Marker the vicinity of both a recorded, appropriate Construction Compound and protection measures a drive pit/receiving pit would be compound associated with implemented. This the trenchless crossing of the could include signage Basingstoke Canal. There is and fencing, and the potential for damage or reduction or avoidance destruction of this boundary of topsoil stripping Page 4 of Appendix 9.4 Southampton to London Pipeline Project Environmental Statement Appendix 9.4: Potential Effects on the Historic Environment Asset Site Name Value Potential Impact Potential Magnitude Significance Good Practice Residual Residual Number Description - Construction Impact of Effect Measures or Magnitude Significance Duration Mitigation marker such that the where practicable resource is totally altered. (G70). 770 World War Low The exact location and Permanent Major Moderate Measures presented Negligible Negligible Two Aircraft potential for in situ remains of Adverse within the AMS would Crash: the crash are unclear. be taken to protect or Deepcut However, the location preserve in situ or by provided by the HER is within record any significant 50m of the Order Limits near archaeological to a Construction Logistics remains that may be Hub and the potential for a found (G67). physical impact on these remains cannot therefore be ruled out. If remains are encountered, these would be automatically be designated as a Protected Place under the Protection of Military Remains Act 1986, and a licence would be required from the Secretary of State before any further disturbance of the remains could be undertaken. If remains associated with