Environmental Appraisal Report

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Environmental Appraisal Report St. Austell Link Road Environmental Appraisal Report CORMAC Project number: 60571547 20th August 2020 St. Austell Link Road Full Business Case Project number: 60571547 Quality information Prepared by Checked by Approved by Sarah Roberts Steffan Shageer Alison Morrissy Graduate Environmental Principal Environmental Associate Director Consultant Consultant Revision History Revision Revision date Details Authorised Name Position 1 20/06/19 Template Y SS Principal 2 11/07/09 FINAL Y AM Associate 3 20/08/20 FINAL Y SS Principal 4 Prepared for: CORMAC AECOM 1 St. Austell Link Road Full Business Case Project number: 60571547 Prepared for: CORMAC Prepared by: AECOM Limited Plumer House Third Floor, East Wing Tailyour Road Crownhill Plymouth PL6 5DH United Kingdom T: +44 (1752) 676700 aecom.com © 2019 AECOM Limited. All Rights Reserved. This document has been prepared by AECOM Limited (“AECOM”) for sole use of our client (the “Client”) in accordance with generally accepted consultancy principles, the budget for fees and the terms of reference agreed between AECOM and the Client. Any information provided by third parties and referred to herein has not been checked or verified by AECOM, unless otherwise expressly stated in the document. No third party may rely upon this document without the prior and express written agreement of AECOM. Prepared for: CORMAC AECOM 2 St. Austell Link Road Full Business Case Project number: 60571547 Table of Contents 1. Introduction...................................................................................................6 Background............................................................................................................................................. 6 Project context......................................................................................................................................... 6 Report structure....................................................................................................................................... 6 Appraisal assumptions and limitations ..................................................................................................... 6 Noise....................................................................................................................................................... 6 Air Quality and Climate Change............................................................................................................... 7 Other disciplines...................................................................................................................................... 7 2. Site and Project Description .........................................................................7 Site description........................................................................................................................................ 7 Site context and surroundings.................................................................................................................. 8 Site location............................................................................................................................................. 9 Purpose and scope of appraisal............................................................................................................. 11 3. Environmental Appraisal.............................................................................13 Noise..................................................................................................................................................... 13 Introduction ........................................................................................................................................... 13 Appraisal Methodology .......................................................................................................................... 15 Study Area............................................................................................................................................. 15 Calculation Methodology........................................................................................................................ 15 Baseline ................................................................................................................................................ 16 Estimation of changes in noise impact ................................................................................................... 16 Overall assessment score...................................................................................................................... 17 Air Quality.............................................................................................................................................. 18 Introduction ........................................................................................................................................... 18 Appraisal Methodology .......................................................................................................................... 18 Results .................................................................................................................................................. 19 People and Communities....................................................................................................................... 24 Introduction ........................................................................................................................................... 24 Appraisal Methodology .......................................................................................................................... 24 Baseline ................................................................................................................................................ 25 Appraisal of social impacts on people and communities......................................................................... 28 Severance Impacts .............................................................................................................................. 29 Journey Quality ..................................................................................................................................... 29 Access to services................................................................................................................................. 30 Overall assessment score...................................................................................................................... 30 Water .................................................................................................................................................... 31 Introduction ........................................................................................................................................... 31 Appraisal Methodology .......................................................................................................................... 31 Scoping and identification of study area................................................................................................. 31 Key water environmental resources ....................................................................................................... 31 Value of Key Water Resources .............................................................................................................. 33 Appraisal of the Proposed Development’s impact................................................................................... 36 Overall assessment score...................................................................................................................... 36 Geology (Groundwater) ......................................................................................................................... 37 Introduction ........................................................................................................................................... 37 Prepared for: CORMAC AECOM 3 St. Austell Link Road Full Business Case Project number: 60571547 Appraisal methodology .......................................................................................................................... 37 Scoping and identification of study area................................................................................................. 37 Identifying key groundwater receptors and their sensitivity ..................................................................... 38 Appraisal of the Proposed Development’s impact................................................................................... 38 Overall assessment score...................................................................................................................... 39 Waste.................................................................................................................................................... 40 Introduction ........................................................................................................................................... 40 Appraisal Methodology .......................................................................................................................... 40 Identifying key receptors........................................................................................................................ 40 Appraisal of the proposal’s impact on landfill capacity ...........................................................................
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