New Hope Corporation LimitedASX: NHC

March 2023 Air Noise and Vibration Monthly Report

Jul 14, 2025 at 1:45 AM UTC · Issued by New Hope Corporation Limited

Watch New Hope explain itNew Hope Corporation Limited (NHC) Q4 2026 Earnings Call · Replay · Aug 16

New Acland Coal Mine Stage 3 Project Air, Noise and Vibration Report March 2025

New Acland Mine

Contents

Introduction 4

Purpose 4

Overview of operations during the Monitoring Period 4

Attended Compliance Noise Monitoring 5

Environmental Monitoring 6

Meteorological Monitoring Location and Parameters 6

Air Quality Monitoring Locations and Parameters 6

Noise Monitoring Parameters and Locations 7

Blast and Vibration Monitoring Parameters and Locations 7

Data and Results 8

Meteorological Monitoring 8

Air Quality Monitoring 9

Data Validation 9

Noise Performance and Quality Monitoring 10

Noise Exclusions 10

Blast and Vibration Quality Monitoring 11

Compliance Review and Conclusion 12

Appendix 1 - Monitoring Locations 13 Appendix 2 - Environmental Monitoring Data 14 Appendix 3 - Third-Party External Reports 24 Appendix 4 - Extracted Conditions 25 Appendix 5 - Environmental Authority Limits 28

Tables

Table 1: Mining related activities at each pit 4

Table 2: Meteorological monitoring site and parameters 6

Table 3: Air quality monitoring sites and parameters 7

Table 4: Noise monitoring sites and parameters 7

Table 5: Meteorological Data for the Monitoring Period 8

Table 6: Compliance air quality monitoring data collected during the Monitoring Period. 9 Table 7: Compliance noise monitoring data collected during the Monitoring Period 11

Table 8: Blast and vibration monitoring data collected during the Monitoring Period 11

Table 9: New Acland Coal's Air Quality Monitoring for Total Suspended Particles (TSP), PM10, and PM2.5 14

Table 10: NAC Noise Compass Data LAeq (dBA, 12:00 am to 12:00 am) for Acland, North and East Compasses 19

Table 11: Noise monitoring data LAmax (dBA, 12:00 am to 12:00 am) collected during the Monitoring Period 22

Table 12: Regulatory conditions and requirements referred to in report. 25

Table 13: EA Noise Limits (including Construction). 28

Table 14: EA Blasting Noise Limits 28

Table 15: Air quality limits and monitoring requirements 29

Figures

Figure 1: Wind Rose Diagram for the Monitoring Period 8

Figure 2: Daily TSP values for New Acland Coal 16

Figure 3: Daily PM10 values for New Acland Coal 17

Figure 4: Daily PM2.5 values for New Acland Coal 18

Figure 5: Performance Noise Measurements (LAeq, 7:00 am to 6:00 pm) for New Acland Coal during the Monitoring Period 20

Figure 6: Performance Noise Measurements (LAeq, 6:00 pm to 7:00 am) for New Acland Coal during the Monitoring Period 21

Figure 7: Performance Noise Measurements (LAmax, 10:00 pm to 7:00 am) for New Acland Coal 23

Document History and Status

Revision	Date issued	Reviewed by	Approved by	Date approved	Revision type
0.0	11-Jun-25	G Cowie			Draft
1	16-Jun-25	G Cowie			Final
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16/06/2025

250616 Monthly Air Noise and Vibration Reports_March_2025_v1_final.docx Wei Kiat Yeo

SLR Consulting Australia Pty Ltd

on behalf of New Acland Coal Pty Ltd New Acland Stage 3 Project

Air, Noise and Vibration Monthly Report - New Acland Stage 3 Project 1

Introduction

Purpose

This document (Report) is issued by New Acland Coal Pty Ltd (New Acland Coal/NAC) in respect of the New Acland Coal Mine Stage 3 project (New Acland Mine or Project). It has been prepared by SLR Consulting Australia Pty Ltd (SLR), on behalf of NAC.

The purpose of this Report is to make publicly available environmental monitoring reports from air, noise and vibration monitoring that has been conducted at and around the New Acland Mine in accordance with environmental authority EPML00335713 (Environmental Authority / EA).

This Report exclusively covers the period commencing on 01 March 2025 and ending on 31 March 2025 (Monitoring Period).

This report is intended to satisfy the requirements of Condition 3 of the Co-ordinator

General's Imposed Conditions applicable to the Project.1

Overview of operations during the Monitoring Period

During the Monitoring Period, mining related activities continued in Manning Vale East, Manning Vale West and Willeroo pits. The mining activities at each pit are presented in Table 1 below.

‌Table 1: Mining related activities at each pit

Pit	Activities
Manning Vale East	Vegetation clearing, topsoil removal, coal extraction, removal of overburden, progressive rehabilitation, drill and blast works.
Manning Vale West	Exploration drilling.
Willeroo	Vegetation clearing, topsoil removal, removal of overburden, drill and blast works, coal extraction.

NAC operations occurred over a 24-hour period, where noise permits (i.e. actively monitoring their performance noise monitoring system) and deemed safe. The heavy vehicle workshop operates from 6:30 am to 6:30 pm, with toolbox talks and general preparation occurring between 6:30 am and 7:00 am.

NAC started mining coal October 2023, with capacity and output steadily increasing from this date. The Coal Handling and Preparation Plant (CHPP) typically operates on a 24-hour basis, outside of maintenance and shutdown events. Mobile plant that supports the CHPP include:

Wheel loader and haul truck for run-of-mine (ROM) bin loading and rejects removal. Alternatively, only ROM coal haul trucks operating if they are directly feeding coal to the ROM bin.
Qube trucks hauling export coal to Jondaryan Rail Loadout Facility (JRLF), wheel loader to fill Qube trucks when required. Where Qube trucks operate within NAC's mining lease, whether that be on a mine haul route or public road, noise generated from their operation is subject to the relevant time period noise level limits prescribed

‌1 As last stated in the New Acland Coal Mine Stage 3 project Coordinator-General's change report No. 4 - amendment to stated conditions following Land Court (2021) proceedings released on 26 May 2022.