Proposed Construction of a 132Kv Transmission Line from the Longyuan Mulilo De Aar Maanhaarberg Wind Energy Facility Near De Aar, Northern Cape
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Proposed construction of a 132kV transmission line from the Longyuan Mulilo De Aar Maanhaarberg Wind Energy Facility near De Aar, Northern Cape Heritage Impact Assessment Report Issue Date: 10 April 2014 Revision No.: 2 Client: AURECON SOUTH AFRICA (PTY) LTD Professional Grave Solutions (Pty) Ltd T/A PGS Heritage PO Box 32542 Totiusdal 0134, T +27 12 332 5305 F: +27 86 675 8077 Reg No 2003/008940/07 ACKNOWLEDGEMENT OF RECEIPT CLIENT: Aurecon South Africa (Pty) Ltd CONTACT PERSON: Tamryn Johnson, Aurecon South Africa (Pty) Ltd, Tel: +27 21 526 5737, Email: [email protected] Aurecon Centre, 1 Century City Drive, Waterford Precinct, Century City, South Africa LEADING CONSULTANT: PGS - Heritage CONTACT PERSON: Wouter Fourie, Tel: 086 111 4771, Email: [email protected] SIGNATURE: ______________________ COPYRIGHT Copyright in all documents, drawings and records whether manually or electronically produced, which form part of the submission and any subsequent report or project document shall vest in PGS or as agreed upon with the Client. None of the documents, drawings or records may be used or applied in any manner, nor may they be reproduced or transmitted in any form or by any means whatsoever for or to any other person, without the prior written consent of PGS. The Client, on acceptance of any submission by PGS and on condition that the Client pays to PGS Heritage and Grave Relocation Consultants the full price for the work as agreed, shall be entitled to use for its own benefit and for the specified project only: i. The results of the project; ii. The technology described in any report; and, iii. The recommendations delivered to the Client. HIA – De Aar –132kV Longyuan Mulilo De Aar Maanhaarberg Wind Energy Facility 10 April 2014 Page ii Declaration of Independence The report has been compiled by PGS Heritage, an appointed Heritage Specialist for Aurecon South Africa (Pty) Ltd. The views stipulated in this report are purely objective and no other interests are displayed during the decision making processes discussed in the Heritage Impact Assessment Process HERITAGE CONSULTANT: PGS Heritage CONTACT PERSON: Wouter Fourie Tel: +27 (0) 86 111 4771 Email: [email protected] SIGNATURE: ______________________________ Report Title Proposed construction of a 132kV transmission line from the Longyuan Mulilo De Aar Maanhaarberg Wind Energy Facility near De Aar, Northern Cape– Heritage Impact Report Control Name Signature Designation Author W Fourie Project Coordinator/Heritage Specialist Reviewed T Johnson Aurecon HIA – De Aar –132kV Longyuan Mulilo De Aar Maanhaarberg Wind Energy Facility 10 April 2014 Page iii EXECUTIVE SUMMARY PGS Heritage was appointed by Aurecon South Africa (Pty) Ltd to undertake a Heritage Impact Assessment (HIA) that forms part of Basic Environmental Assessment report (BAR) the proposed construction of a 132kV transmission line from the Longyuan Mulilo De Aar Maanhaarberg Wind Energy Facility to the Eskom Hydra Substation near De Aar, Northern Cape. Archaeological Finds Utilising the archival study completed for the HIA as a guide, the field work identified a total of 2 archaeological find spots (DAM1 and 2) on the alternative alignment and one archaeological site (LMM/WEF-1) of low significance on the preferred alternative. No further mitigation will be required on these sites. The HIA has focused on a 500 meter assessment corridor and the archaeological component on the centre alignment of the 500 meter corridor. Because of subsurface and localised nature of archaeological remains, any deviation or changes within the corridor to the initial layout alignment will require an archaeological walk-down of the new alignment after pylons placement positions have been to identify any possible archaeological and heritage structures and sites before construction commence. Heritage Structures The field work has identified one structure (LMM/WEF-2) associated with early farming activities and is most probably older than 60 years. These structures are protected under Section 34 of the national Heritage Resources Act and will require a permit from the Provincial Heritage Authority in the Northern Cape, Ngwao-Boswa Jwa Kapa Bokone, for any alterations to the structure. It is recommended that: The placement of the pylons must be done in such a way as to avoid the structure; The site (referred to as Site LMM/WEF-2) must be demarcated with a fence prior to construction and a buffer of at least 10 meters kept, during construction. HIA – De Aar –132kV Longyuan Mulilo De Aar Maanhaarberg Wind Energy Facility 10 April 2014 Page iv Cultural Landscape The evaluation of the route alternatives and the 500 meter corridors around the centre line has identified one farmstead that is less than 500 meters from the proposed route corridors. The proposed alignment of the 132kV lines is judged to have a low negative impact on the cultural landscape around the Zwartkoppies farmstead. Palaeontology There is a high and moderate possibility that fossils could be encountered during excavation of the Abramskraal and Tierberg Formations respectively. These fossil finds would be of international significance. The damage and/or loss of these fossils due to inadequate mitigation would be a highly negative palaeontological impact. The exposure and subsequent reporting of fossils (that would otherwise have remained undiscovered) to a qualified palaeontologist for excavation will be a beneficial palaeontological impact. It is therefore recommended that: • A Palaeontologist should be appointed as part of the Environmental Construction Team for preferably all identified palaeontological sensitive areas but definitely for the identified high sensitive areas. • If required a palaeontological rescue and/or destruction permit must be obtained by the Palaeontologist. • The Palaeontologist accompanying the surveyor and foundation teams during the pylon construction phase should advise on pylons positions. If possible, pylons located within potential fossil bearing areas should be moved. If not possible, any fossils found should be rescued from the construction footprint. • Compile a Phase 2 report to the Heritage Authority responsible after palaeontological construction inputs. Handling of chance finds A short induction on possible heritage resources that maybe found in the area should be included in the induction program for construction employees. If a possible heritage site is discovered during construction activity, all operations in the vicinity of the discovery should stop and a qualified specialist contracted to evaluate and recommend appropriate actions. Depending on the type of site this can include initiating a grave relocation process, documentation of structures or archaeological excavations. HIA – De Aar –132kV Longyuan Mulilo De Aar Maanhaarberg Wind Energy Facility 10 April 2014 Page v CONTENTS Page 1 INTRODUCTION 9 1.1 Scope of the Study 9 1.2 Specialist Qualifications 9 1.3 Assumptions and Limitations 10 1.4 Legislative Context 10 1.5 Site Location and Project Description De Aar 1 (Maanhaarberg) 17 1.6 Heritage Assessment Methodology 19 2 ARCHIVAL FINDINGS 21 2.4 PALAEONTOLOGY OF THE AREA 31 3 POSSIBLE HERITAGE FINDS 31 4 SITE EVALUATION 33 4.1 Preferred Route – Archaeological Sites 34 4.2 Alternative Route – Archaeological Sites 38 4.3 PV3 to Hydra Section of the alternative route 41 4.4 Palaeontological Sensitivity 43 4.5 Cultural Landscape 44 5 CONCLUSIONS 48 5.1 Heritage Structures 49 5.2 Cultural Landscape 49 5.3 Palaeontology 49 5.4 Handling of chance finds 50 6 LIST OF PREPARERS 50 7 REFERENCES 50 HIA – De Aar –132kV Longyuan Mulilo De Aar Maanhaarberg Wind Energy Facility 10 April 2014 Page vi LIST OF FIGURES Figure 1 –Human and Cultural Time line in Africa (Morris, 2008) 16 Figure 2 – Regional position and alignment 17 Figure 3 – Type of tower to be used 18 Figure 4 – The study area for this Report (purple and green)) with previous heritage studies conducted indicated (green) 22 Figure 5 – The greater De Aar region indicating San Rock Art finds – Blue spot indicate areas of sheet erosion (Red outline study area) (Van Jaarsveld, 2006) 23 Figure 6 – Low density scatter of MSA finds 24 Figure 7 – Area scattered with eroded MSA artefacts – Renosterberg in the background 24 Figure 8 – Stockpiles of oats at De Aar (ca. 1900) 27 Figure 9 – The Remount Depot Garrison at De Aar (December 1899) 27 Figure 10 - Geology of the two alternative routes at De Aar (Geo Maps 3022 Britstown and 3024 Colesberg) 30 Figure 11 – Possible heritage sensitive areas 33 Figure 12 – General view of site 34 Figure 13 – Dorsal view of lithics 35 Figure 14 – View of stone wall with existing power line in back ground 36 Figure 15 – Close up view of the stone wall 37 Figure 16 – General view of site 38 Figure 17 – Dorsal view of lithics 39 Figure 18 – General view of site 40 Figure 19 – Dorsal view of lithics 41 Figure 20 – Map indicating the location of archaeological sites that will require mitigation if the PV facilities as assessed by Orton & Webley should go ahead. The empty pink polygons indicate areas that need to be avoided (Orton & Webley, 2013). Red line indicates the proposed PV3 to Hydra 132kV line. 42 Figure 21 - Palaeontological Sensitivity Localities for the Preferred Route 44 Figure 22 – Zwartekopje Farmstead layout 46 Figure 23 – Panoramic view from the west towards the Zwartkoppies farmstead (Yellow arrow) and the propose route alignments (red arrow) 46 Figure 24 – First approved 132kV alignment in relation to the