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Environmental Protection Act 1986, Part V


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The Department of Environmental Regulation (DER) is a government department for the state of Western Australia within the portfolio of the Minister for the Environment. In accordance with Part V of the Environmental Protection Act 1986 (the Act), DER is responsible for issuing permits for prescribed premises. The piggery was first set up on the premises in 1987 as a 100 sow facility, with the waste water treatment basin constructed in 1992/1993 without planning permission and prior to any registration or licensing of the premises.

Marbellup Bækken runs through an adjacent property and is approx. 300 m east and 430 m south of the sewage treatment pond. There is no solids separation of the wastewater stream prior to disposal to the pond. Premises means the area defined in the premises map in Schedule 1 and indicated as the premises address on page 1 of the licence.

Wastewater must be removed from Wastewater Dam 1 for off-site disposal when necessary to prevent overflow of the dam. The Licensee shall install a permanent survey marker within the existing wastewater treatment dam (Wastewater Dam 1) and thereafter maintain them which will enable visual reading and recording of the freeboard in millimeters at any time. The Licensee will drill two groundwater monitoring boreholes (MB2 . & MB3) adjacent to the southwest and southeast wall of the.

A strategy for an ongoing assessment of the OMP's performance, considering possible implementations.

Table 1.3.1: Containment infrastructure
Table 1.3.1: Containment infrastructure

5 Information

  • Records
  • Reporting
  • Notification
  • Maps
  • Reporting & notification forms

Cubic meters of solid waste or sludge removed from off-site disposal facilities. The number of pigs (sows, gilts, boars, weaned pigs, grower pigs, finishing pigs) kept and removed from the premises each month. Summary of complaints for the annual period Note 1: Forms are in Annex 2. 5.2.2 The licensee must ensure that the annual environmental report also contains: a) any relevant process, production or operational data recorded under condition 3.1.3; and (b) evaluating the information in the report against previous monitoring. results and limitations and/or objectives of the license.

Status or table Reporting parameters Date of reporting Format or form. if necessary) period (after the end of. Copies of the original No Within 14 days of As obtained from the monitoring reports Applicable, CEOs require the Licensee from the third. These forms are provided for the proponent to report the monitoring and data other required by the License.

Table 5.2.2: Non-annual reporting requirement
Table 5.2.2: Non-annual reporting requirement




Monitoring of pig numbers and external waste processing Form PN1: Monitoring of pig numbers and external waste processing. Notification of detection of exceeding a limit or a malfunction or failure of pollution control equipment or an incident that has caused, caused or may cause pollution. The units of measurement used in the information provided under Part A and Part 8 requirements must be appropriate for the conditions of the release.

Date and time of monitoring Measures taken or intended to be taken to stop emissions. Notification requirements for any malfunction or failure of pollution control equipment or any incident that has caused, caused or may cause pollution. Description of where a release occurred to the environment Substances that may have been released Best estimate of the amount or rate of release of substances Measures taken or planned to stop an emission Description of the malfunction or accident.

Measures that have been or will be taken to rectify, limit or prevent any pollution of the environment that has been or may be caused by the emission.

Decision Document



John Charles Bunn L8809/2014/1


1 Purpose of this Document

2 Administrative summary

3 Executive summary of proposal and assessment

Pork rinse water and waste water from the weanling/grower and finishing pens are collected by slatted floors and channeled via concrete drains to a concrete container (soup bowl). The effluent from the plug pulling system in the farrowing barn and rinse water from the dry sow barn is transferred through PVC pipes to the concrete drainage channels next to the weanling/growing barn which flows to the concrete wood tank. There is no solids separation in place prior to transporting the wastewater from the holding tank to the treatment pond.

Waste water and collected solids in the holding tank are mixed and then pumped directly to the anaerobic pond which has a design capacity to hold 14,450 m3 of waste water. Water from this anaerobic pond is currently pumped back to the rinse water tanks and is used to rinse the dry sow, weanling and finishing pens approximately twice a week. Over its years of operation, the piggery has been the subject of numerous odor complaints from several nearby residents.

In the past, the proponent has mechanically spread dried sludge from the sewage treatment pond and untreated sewage directly from the concrete holding tank (pit) into the ground. It has also, on occasion, irrigated water from the sewage treatment pond to adjacent ponds to the south of the pond. The piggery has been expanded without all the necessary approvals of the local government and environmental regulatory department, increasing the capacity (pig places) of pigs in 2013 to 1200 pigs.

The holding capacity of the pigs was increased without the waste water treatment capacity and disposal system being increased accordingly. This license is for the operation of an existing facility which was operated under a registration and was found in 2013 to be above the approved pig number limit for a Registered Pig Farm of 999 and above the approved sow limit set by the local government's planning permission. The main emissions at the site are related to pig farming effluent collection, treatment and disposal and associated odor emissions which are considered high risk under current operating conditions.

The permit addresses operational and emissions risks by limiting the number of pigs, preventing discharge of solid or liquid wastes into the ground, groundwater monitoring requirements, and regulation.

4 Decision table

I osc or

OSC 1 Justification {including risk description & decision methodology where or relevant)

L3.8.1 was added to the license to monitor the impact on groundwater of the treatment and storage of effluent in a clay-lined pond and burial of carcasses and stormwater controls. Improvement conditions (IR2 & IR3) have been set which require the installation of two new monitoring bores near the SW and SE boundaries of the existing wastewater treatment pond (MB2 & MB3) to enable ambient groundwater. The existing piezometer installed on the western boundary of the site in 2007 has been added to the borehole monitoring program with monitoring data from these 3 boreholes intended to determine if there is any indication of impacts on groundwater quality attributable to leakage from the existing wastewater treatment pond. which could potentially have an impact on water quality of the nearby adjacent sections of Marbellup Brook.

L3.8.1 specifies a requirement for quarterly monitoring of two new wells (MB2 and MB3), an existing midwest boundary piezometer (MB4), and a tilt production well (MB1). MB1 will provide background groundwater quality data for comparison with results from the other three monitoring wells. There is one production well located near the residence near the northern boundary of the facility (MB1.

This drilling has a depth of 33 meters and a standing water level of about 12 to 14 meters below about level (BGL). the mean standing water level is assumed to be 10 m BGL. The second piezometer about 140 m NE of the pond has an average standing water level of 12 m BGL.

However, since the piezometers were installed, there has been no formal water level monitoring or round water quality testing.

I DSC or

IR6, IR7 - Current fuel storage at the site includes an outdoor 5,000 liter diesel tank with no secondary containment infrastructure. IR6 and IR7 are OSCs relating to a review of any requirements to upgrade chemical and fuel storage at the Premises. The OSC 5.1.4 for the implementation of a complaint management system was added due to the history of odor complaints for this premises.

Results from the quarterly groundwater monitoring program and volumes of liquid waste or sludge removed from facilities also require reporting. As there is a condition of license to keep the maximum number of pigs at 1000 pigs, LS.3.1 requires notification within a certain time limit if the upper limit of the number of pigs is exceeded.

5 Advertisement and consultation table

Risk Assessment


Table 1.3.1: Containment infrastructure
Table 4.1.1:  Improvement program  Improvement
Table 4.1.1 : Improvement program  Improvement  Improvement  reference
Table 5.2.2: Non-annual reporting requirement



Related documents

Environmental Protection Act 1986 Page 8 of 29 Decision Document: W5805/2015/1 File Number: DER2015/000034 IRLB_TI0669 v27 DECISION TABLE Works Approval / Licence section