Environmental Monitoring at Glen Innes Waste Management Depot

Glen Innes Severn Council (PO Box 61, GLEN INNES NSW 2370) holds Environmental Protection Licence (EPL) number 5939 relating to waste disposal by application to land, at the Glen Innes Waste Management Depot at 88 Rodgers Road Glen Innes.

The licence includes a requirement to perform environmental monitoring of air emissions, water and land pollution at various locations and frequencies. The aim of monitoring is to assess present environmental health risks due to methane emissions from surface areas and within the recycling facility, and landfill leachate contamination of surface water and ground water. The environmental monitoring points are described in Table 1 below:

EPA Identification Number Type of Monitoring Point Monitoring Frequency Location Description

(labels in bold are referenced in diagram below

and environmental monitoring results)
10 Air emissions monitoring Quarterly Surface gas monitoring in leachate irrigation area labelled "A1", "B2" and "C4" and in the "current operating landfill area".
11 Air emissions monitoring Quarterly Building gas accumulation monitoring in Materials Recovery Facility labelled "MRF".
2 Leachate quality Monitoring Every 6 months Tertiary leachate pond labelled "GL2"
3 Discharge to waters Quality weekly & volume daily, only during overflow Tertiary leachate pond spillway labelled "GL3"
Discharge quality monitoring
4 Ambient water monitoring Every 6 months Point labelled "GS2"
5 Discharge to utilisation area Daily volume, only during overflow Point labelled "EPA 5"
Volume monitoring
6 Groundwater quality monitoring Quarterly Groundwater monitoring point labelled "GW1"
7 Groundwater quality monitoring Quarterly Groundwater monitoring point labelled "GW2"
9 Leachate quality monitoring Quarterly Leachate monitoring point labelled "GL1". Sample taken from leachate sump of landfill.
Volume monitoring Monthly calculation
12 Groundwater quality monitoring Quarterly Groundwater monitoring point labelled "GW3"
13 Groundwater quality monitoring Every 6 months Groundwater monitoring point labelled "GW4R"
14 Ambient water monitoring Every 6 months Point labelled "GSQ". Surface water in quarry adjoining landfill site.

Table 1 - Environmental Monitoring Points

Diagram 1 below shows the approximate location of environmental monitoring points at the Glen Innes Waste Management Depot.

environmental monitoring locations

The monitoring requirements required by the licence are detailed in the link below, which is an extract from EPL5939:

Monitoring Requirements(PDF, 229KB)

Quarterly monitoring data for Glen Innes Landfill is shown in the attachment below:

Monitoring Data Glen Innes Landfill updated 30 July 2022(PDF, 475KB)

The type of wastes permitted at the Glen Innes Landfill, and relevant limits imposed by the EPL, are listed in the link below:

Waste Types and Limits(PDF, 149KB)