Environmental Protection (Concrete Batching and Cement Product Manufacturing) Regulations 1998

The regulation is built around a set of defined operational categories and physical infrastructure concepts. The central term is operator, defined as a person carrying on concrete batching or cement product manufacturing. That person bears all the duties under the regulation; there is no provision for outsourcing liability to contractors or employees. Premises is defined as the location at which the operator carries on the regulated activity, so an operator with multiple sites must comply at each one independently.

Concrete batching means the production, or batching and loading for transport, of concrete. This covers both the mixing process and the loading of agitator trucks. Cement product manufacturing means the manufacturing of products in which cement or concrete is the principal ingredient. This includes items such as concrete blocks, pavers, pipes and panels. The distinction matters because regulation 10 (cleaning of inside areas) applies only to cement product manufacturing premises, and regulation 11 (waste water control) applies to both but with slightly different drainage pathways.

The regulation operates through a hierarchy of dust control concepts. The primary concept is visible dust: a subjective, visual standard. There is no quantification of dust emission limits in milligrams per cubic metre except for the reverse pulse air cleaning system requirement in regulation 7(1)(a)(ii). For everything else the test is whether dust is visible escaping from the premises (regulation 3) or from a silo during filling (regulation 6(4)), or whether loose material adheres to vehicles (regulation 4), or whether aggregate height exceeds bin height (regulation 5(2)). This creates enforcement uncertainty because visibility depends on lighting, background contrast, wind and the observer’s eyesight.

The secondary concept is engineering controls. The regulation mandates specific hardware: paved or sealed traffic areas, storage bins or bays with windshields, cement storage silos with air cleaning systems and level indicators or relief valves, enclosed or shielded material handling equipment, slurry pits, settling ponds, silt traps and oil interceptors. The specifications are detailed and prescriptive. For example, the air cleaning system must have a minimum filter area of 23 square metres for mechanical rapping systems, and reverse pulse systems must achieve a numerical emission limit of less than 50 milligrams per cubic metre. The level indicator alarm must trigger at 0.6 metres below the silo air cleaning system inlet or two tonnes less than maximum capacity. There is no performancebased alternative that allows an operator to achieve the same outcome through a different method unless regulation 9(e) permits an area to be otherwise designed and operated so as to prevent visible dust escape. That provision is narrow and applies only to material handling and agitator loading areas.

The waste water control concept is a closed loop: water must drain into slurry pits and settling ponds, not be discharged until treated through silt traps or settlement, and if hydrocarbons are likely, through oil interceptors. The standards for slurry pit maintenance (no drying out, material no higher than 30 centimetres below the top) are prescriptive rather than riskbased.

The disposal concept in regulation 13 is binary: recycle or dispose at a licensed facility. There is no allowance for on‑site burial, land farming or other methods.

The regulations directly impose duties on operators: persons carrying on concrete batching or cement product manufacturing. This includes businesses ranging from large integrated concrete suppliers with multiple depots to small block‑laying yards and precast panel manufacturers. The definition is functional, not entitybased, so a construction company that operates a temporary concrete batching plant on a project site is an operator and must comply. The regulation does not distinguish between permanent and temporary premises except through the transitional provision for existing facilities (regulation 16), which grants six months to comply with certain silo and waste water requirements. There is no exemption for small operators, seasonal operations, or premises that batch concrete only occasionally.

The regulations also affect employees and contractors who undertake the physical tasks of unloading cement, sweeping paved areas, inspecting filters, testing air cleaning systems, washing agitators and emptying slurry pits. While the operator bears legal liability, the regulation requires action at the operational level: weekly filter inspection (regulation 7(2)), weekly air cleaning system testing (regulation 7(3)), activation of the test circuit before each load of cement (regulation 8(2)), and immediate cessation of unloading if visible dust escapes (regulation 6(4)). These duties must be built into shift routines and training.

Indirect effects fall on neighbours, local residents and tenants of adjoining premises. The visible dust standard is designed to protect them from fugitive dust emissions, but it also creates a basis for complaints that can trigger enforcement action. In practice, the standard is subjective so disputes about whether dust was visible, from which boundary, and at what time of day are likely.

Suppliers and transporters of cement and aggregate are affected indirectly. A driver delivering cement to a silo may be refused unloading if the silo’s air cleaning system is not working efficiently (regulation 7(3)) or if visible dust escapes (regulation 6(4)). The operator cannot accept the load until measures are taken, which means the supplier may face delayed deliveries or return trips. Similarly, agitator truck drivers must ensure their vehicles are washed free of cement slurry and dust before leaving the premises (regulation 4(2)).

Waste facility operators whose sites receive concrete batching or cement product manufacturing waste are affected because regulation 13 requires that the receiving facility hold a Part V licence under the Environmental Protection Act 1986. This may restrict disposal options and increase costs for operators who previously used unlicensed sites.

Regulatory agencies, principally the Department of Environment and Conservation (now Department of Water and Environmental Regulation), are affected through enforcement costs. The penalty of $5,000 per offence is modest, so the deterrence effect depends on the probability of detection and the willingness of the agency to prosecute repeat offenders. The regulations do not create a licensing or approval scheme; compliance is enforced through incident response, complaints and occasional inspections.

The operator’s duties under the regulations are exhaustive and largely negative: do not let visible dust escape, do not let vehicles leave unwashed, do not overload aggregate bins, do not fill silos without functioning air cleaning systems, do not discharge untreated water. There are no corresponding rights conferred on operators by the regulations. The operator has no right to apply for an exemption, a variation, an alternative compliance pathway or an extension beyond the sixmonth transitional period. There is no mechanism for the regulator to approve a different dust control method that achieves an equivalent outcome. The regulation is entirely prescriptive, not performancebased, except for the narrow escape clause in regulation 9(e) for material handling and agitator loading areas.

For neighbours and the public, the regulations create a right to be free from visible dust escaping from the premises, but this right is not directly enforceable by private action. Enforcement is through the regulator under the principal Act. A neighbour who suffers dust nuisance may also have common law rights in nuisance or trespass, but those are not created or modified by these regulations.

The key duties can be grouped into operational phases. During receipt of raw materials: the operator must stop unloading if visible dust escapes (regulation 5(4) for aggregate and sand; regulation 6(4) for cement); must seal inspection ports and hatches during cement unloading (regulation 6(3)); must activate the level indicator test circuit before each cement load (regulation 8(2)); and must not unload cement if the air cleaning system is not working efficiently (regulation 7(3)). During storage: aggregate and sand must be in bins or covered/damp stockpiles (regulation 5); cement must be in bags or compliant silos (regulation 6). During production and loading: all material handling equipment and agitator loading areas must be enclosed, shielded, fitted with dust extraction or otherwise designed to prevent visible dust escape (regulation 9); vehicles must be washed before leaving (regulation 4(2)). During cleaning and maintenance: inside areas of cement product manufacturing premises must be regularly cleaned, but water cannot be used unless electrical fittings are waterproof (regulation 10); trafficable areas must be swept or hosed (regulation 4(1)(b)); filters must be inspected weekly and repaired or replaced if blocked or damaged (regulation 7(2)); the air cleaning system must be tested weekly (regulation 7(3)); spare filters must be kept on hand (regulation 7(4); slurry pits must not dry out or exceed 30 centimetres below the top (regulation 12(1)); settling ponds must be large enough for full settlement (regulation 12(2)); slurry pits, settling ponds, silt traps and oil interceptors must be maintained and emptied as often as necessary (regulation 12(3)). During waste disposal: all waste must be recycled or disposed of at a licensed landfill or waste treatment facility (regulation 13); waste water cannot be discharged until treated through a silt trap or settlement, and if hydrocarbons are likely, through an oil interceptor (regulation 11(2)).

There is no duty to keep records of inspections, tests, maintenance or disposal. This is a notable gap because an operator who is inspected or prosecuted has no statutory obligation to produce documentary evidence of compliance. In practice an operator would need to generate such records to defend against an alleged contravention, but the regulations themselves do not require it.

Regulation 14 creates a single offence: a person who contravenes any of these regulations commits an offence. The penalty is $5,000. There is no escalation for multiple offences, no daily penalty for continuing breaches, and no distinction between first offence and subsequent offence. The penalty amount is low relative to the capital cost of compliance. A concrete batching plant might spend tens of thousands of dollars paving traffic areas, installing silo air cleaning systems and constructing slurry pits and settling ponds. The penalty of $5,000 is smaller than the cost of some individual compliance items, which creates a risk that a marginal operator might treat occasional enforcement as a cost of doing business rather than an incentive to comply.

The offence is not expressed to be one of strict liability, but the duty language in each regulation uses must and the penalty provision does not include any element of fault, knowledge or intent. The Environmental Protection Act 1986 contains its own penalty and enforcement provisions, including environmental protection notices and prosecution powers, but the regulations sit alongside that framework rather than within it. Regulation 14 is freestanding; it does not incorporate defences available under the principal Act such as the due diligence defence that applies to some pollution offences.

Enforcement is likely to be reactive. The regulations do not require operators to hold a licence, submit compliance reports or notify the regulator of inspections. An offence is typically detected through a complaint from a neighbour about dust, a spot inspection by an environmental officer, or visible evidence such as a dust plume from a silo or muddy runoff from a premises. Once detected, the regulator can issue a warning letter, an environmental protection notice under Part V of the principal Act, or prosecute the offence directly. The $5,000 penalty is within the jurisdiction of a magistrates court.

The regulations do not provide for infringement notices (on‑the‑spot fines). A prosecution is required for every contravention, which imposes resource costs on the regulator and limits the enforcement rate. For many minor or technical breaches, a warning may be the only practical response.

There is no provision for a court to order remedial action, compensation, or costs of investigation. The penalty is the only sanction. This means that even if a prosecution succeeds, the operator may still be in breach the next day with no ongoing liability other than the risk of another prosecution.

A person who knowingly provides false information to a regulator about compliance would likely face an offence under the principal Act rather than these regulations. The regulations themselves contain no false statement or recordkeeping offences.

The regulations are subordinate legislation under the Environmental Protection Act 1986 (WA). That Act provides the enforcement framework, including powers of entry, inspection, sampling, seizure, and the issue of environmental protection notices and pollution abatement notices. The regulations do not replace or override the Act; they add specific operational requirements to the general duty under the Act not to cause pollution or unreasonable emissions.

Regulation 13 explicitly requires that waste be disposed of only at a landfill or waste treatment facility that holds a licence under Part V of the Act. This creates a direct tie to the licensing framework under the principal Act. An operator who uses an unlicensed site commits an offence under both regulation 13 and potentially under Part V of the Act.

Part V of the Act also governs works approvals and licences for prescribed premises. Concrete batching and cement product manufacturing are listed as prescribed premises under the Environmental Protection Regulations 1987 (now the Environmental Protection Regulations 1987, Schedule 1, category 12 and 13). This means that in addition to complying with these regulations, an operator may need a works approval before constructing or altering a facility and a licence to operate, depending on the production capacity or environmental risk. The regulations sit alongside that licensing regime; they do not replace it. An operator with a Part V licence must still comply with these regulations.

The regulations may also interact with local government planning and building approvals. A development approval for a concrete batching plant may include conditions about dust control, noise, traffic and hours of operation. Compliance with these regulations does not guarantee compliance with planning conditions. Conversely, a planning condition that requires dust control might be satisfied by compliance with these regulations, but that is a matter for the local government.

Occupational safety and health laws also apply. The requirement for air cleaning systems to discharge into a weigh hopper or within one metre of the ground (regulation 7(1)(b)) may intersect with workplace safety regulations about air quality in confined spaces or near employees. The use of water sprays for dust control (regulation 9(1)(d)) may create slip hazards or electrical safety issues that are regulated under OHS legislation.

The regulations do not interact with common law nuisance or trespass directly, but compliance with these regulations may be relevant evidence in a civil claim for dust nuisance. A defendant who complies with the regulations is not thereby immune from a common law claim, and a plaintiff who proves a breach of the regulations may use that as evidence of negligence or unreasonable interference.

There is no interaction with the Native Title Act 1993 (Cth), the Heritage of Western Australia Act 1990, or the Planning and Development Act 2005 that is apparent from the text of the regulations themselves.

The regulations were originally published in the Western Australian Government Gazette on 26 May 1998 at pages 2958 to 2961. They commenced on the same day. The only amendment identified in the compilation table is the Environmental Protection (Miscellaneous Amendments) Regulations 1998, Part 8, gazetted on 11 December 1998 at page 6614, which commenced on 8 January 1999. That amendment altered the penalty in regulation 14, which had originally been set at a different amount. The precise text of the amendment is not reproduced in the source, but the gazette reference indicates that regulation 14 was amended on 11 December 1998.

Regulation 15 was omitted under section 7(4)(f) of the Reprints Act 1984, which allows for the omission of spent or obsolete provisions. This suggests regulation 15 may have been a transitional or savings provision that was no longer operative by the time of the reprint.

The compilation as at 6 February 2004 is Reprint 1, which incorporates the 1998 amendment. There is no record of any subsequent amendment in the source provided. The regulations appear not to have been amended in the roughly six years between the 1998 amendment and the reprint date.

The sixmonth transitional period in regulation 16 would have expired around 26 November 1998, roughly two weeks before the amendment to regulation 14. This timing is coincidental but notable: the transitional period for existing facilities to comply with silo and waste water requirements expired before the penalty amendment came into effect, meaning that any operator who had not completed the required upgrades during the transitional period faced the original penalty for a short window before the penalty changed.

The compilation table does not indicate whether the regulations have been amended since 2004. Users would need to consult the current version on the Western Australian Legislation website to confirm the status.

The source provided does not cite any court decisions interpreting these regulations. There is no litigation history contained in the text, and the compilers did not include a note of any cases. This is consistent with a regulation that creates a summary offence with a modest penalty and is enforced primarily through warnings and notices rather than prosecutions that proceed to appeal. The absence of recorded litigation does not mean no prosecutions have occurred; decisions of the Magistrates Court are less frequently reported than those of higher courts, and many environmental prosecutions are resolved by guilty plea without a written judgment.

The regulatory text itself provides little scope for interpretive litigation because the duties are expressed in relatively plain language. The most likely point of legal contest would be whether dust was visible from the premises. That is a question of fact that would depend on witness evidence, photographs and meteorological records, not on statutory interpretation. Another possible issue is whether a person is an operator at a given time, particularly for temporary batching plants on construction sites where the concrete producer and the head contractor may both have some control over operations.

A defendant might argue that a particular structure or practice satisfies the alternative design and operation limb of regulation 9(e), but the provision is narrow: it applies only to movement of materials and loading of agitators, and only so as to prevent the escape of any visible dust. That is a stringent standard that would require the defendant to prove the alternative method is effective.

The absence of a due diligence defence means that an operator who can show all reasonable precautions were taken still faces conviction if visible dust escaped. This could be challenged under the principle of strict liability in criminal law, but the High Court has held that the presumption of a fault element can be displaced by the language and purpose of the regulation. Given the environmental protection objective and the absolute language of must, a court would likely find the offence is one of strict liability. That point has not been litigated in published decisions.

The most significant trap is the visible dust standard in regulation 3. It is not a negligence or bestendeavour standard. If any dust is visible leaving the premises, the operator is in breach regardless of wind direction, time of day, or whether the dust escaped despite all reasonable precautions. An operator who has done everything to control dust but experiences an equipment failure or an unusual weather event is still liable. There is no defence of act of God, sudden emergency, or unforeseeable malfunction in the text.

The weekly inspection and testing requirements in regulations 7(2) and 7(3) are strict and prescriptive. Missing a weekly inspection by one day is a breach. There is no grace period, no allowance for public holidays, and no alternative compliance method for a facility that operates less than once a week. An operator who is closed for a week but has material on site still technically must inspect the filters and test the air cleaning system.

Regulation 7(4) requires the operator to keep sufficient spare filters to replace all such bags or cartridges used in the air cleaning systems of all cement storage silos on the premises. This means a facility with four silos must have a full set of replacement filters on site at all times. There is no allowance for ordering filters on an asneeded basis, and no provision for a period of nonoperation during which spares are not required.

The slurry pit requirements in regulation 12 are easily overlooked. Settled material must not be higher than 30 centimetres below the top of the pit walls, and the pit must not be allowed to dry out except when being emptied. An operator who empties a pit and leaves it dry for several days waiting for a waste contractor is in breach. Similarly, an operator who fills a pit nearly to the top and then waits for the water to evaporate before emptying is in breach.

Regulation 8(2) requires that the test circuit be activated before a load of cement is unloaded. This is a perload duty. An operator who unloads five trucks in a day must activate the test circuit five times. Missing one activation is a breach, even if the alarm was tested earlier that day.

The washing requirement in regulation 4(2) applies to any vehicle carrying concrete or any of the ingredients of concrete. This includes trucks that carry only sand or aggregate, not just agitator trucks. A ute or trailer delivering a small load of sand to a neighbouring site must be washed before leaving the premises.

Regulation 13 requires that waste be recycled or disposed of at a licensed facility. The definition of waste includes material removed from slurry pits, settling ponds, silt traps and oil interceptors. That material may be mostly water and fine sediment, but it cannot be discharged to the sewer, spread on land, or taken to an unlicensed landfill. The requirement to use a licensed facility may impose significant transport and disposal costs, particularly for operators in regional areas where licensed facilities are scarce.

Regulation 10(2) prohibits using water for cleaning inside areas of cement product manufacturing premises unless all fittings and electrical installations are waterproof. This regulation applies to any building used for cement product manufacturing, regardless of when it was built, unless the building existed before the regulations came into operation (regulation 10(3)). For a building constructed after 26 May 1998, water cleaning is prohibited unless electrical fixtures are waterproof. An operator who uses a hose to clean a floor without checking that all switches, sockets and lights are waterproof is in breach.

The regulations do not include any exemption for temporary or mobile batching plants. A contractor who sets up a concrete batching plant on a mining site or construction project for three months must still install paved traffic areas, a cement silo with air cleaning system and level indicator, slurry pits and settling ponds, and maintain weekly inspection and filter replacement regimes.

An operator should approach compliance as a set of engineering, operational and maintenance systems rather than a checklist of oneoff actions.

First, the physical layout of the premises must be designed to meet regulation 4: all vehicleaccessible areas must be paved or sealed. This is a capital cost that should be completed before operations begin. If the premises is temporary, the operator must still pave or seal the trafficable area or commit to daily treatment with water or surfactants. The latter is less capitalintensive but creates ongoing operational costs and the risk that a missed treatment leads to a breach.

Second, storage infrastructure must comply with regulations 5 and 6. Aggregate and sand must be in bins or bays with windshields, not merely stockpiled on the ground unless covered or damp. If stockpiled, the operator must maintain covering or dampening as a continuous condition, not just after loading or when dust is observed. Cement must be in bags or in silos with air cleaning systems and level indicators or relief valves. The air cleaning system must be either a mechanical rapping system with at least 23 square metres of filter area or a reverse pulse system that achieves less than 50 milligrams per cubic metre. A new operator should specify which system is installed and obtain manufacturer certification of compliance.

Third, the waste water system must comply with regulations 11 and 12. The operator should map all drains on the premises to ensure that water from agitator loading areas, mixer washout areas, and sealed or paved areas flows only into slurry pits. No drain may discharge directly off site. The slurry pit must be sized to hold all anticipated water between emptying cycles, and the operator must maintain settled material at least 30 centimetres below the top and not allow the pit to dry out unless it is being emptied. A settling pond must be large enough to hold all water that might drain into it for the time required for complete settlement. The operator should engineer the pond volume based on the maximum rainfall event and maximum washout volume.

Fourth, maintenance and testing schedules must be established and documented. Regulation 7(2) requires weekly inspection of filters or pressure gauges, and immediate cleaning, repair or replacement of blocked, damaged or overloaded filters. Regulation 7(3) requires weekly testing of the air cleaning system. The operator should create a log sheet with dates, times, names of inspectors, and results. Regulation 8(2) requires the level indicator test circuit to be activated before each cement load. The operator should train weighbridge or receiving staff to perform and record this step for every delivery.

Fifth, spare parts must be kept on hand as required by regulation 7(4). The operator should maintain an inventory of replacement filters for every silo on the premises and check stock levels monthly.

Sixth, vehicle departure inspection procedures must be implemented under regulation 4(2). A wheel wash or driveover wash station may be needed. The operator should assign a staff member to check each departing vehicle or install an automated system.

Seventh, waste disposal records must be kept, even though no recordkeeping duty is imposed by the regulations. The operator should obtain receipts from licensed landfill or recycling facilities for all waste removed from slurry pits, settling ponds, silt traps and oil interceptors, and retain them as evidence of compliance with regulation 13.

Eighth, staff training should cover the visible dust standard, the requirement to stop unloading if dust is visible, the sealing of silo hatches, the activation of test circuits, and the prohibition on hosing down inside areas unless electrical fittings are waterproof. Training records should be kept.

Ninth, the operator should conduct a compliance audit at least annually, covering all regulations, and correct any deficiencies before they result in a breach that is observable from outside the premises.