Environmental Protection (Diesel and Petrol) Regulations 1999

Definitions and scope are central. The regulations define petrol as petroleum or shale products used in positive or spark ignition engines and entered for home consumption (r 3(1)). Fuel supplier and fuel distributor are defined by the acts of entering fuel for home consumption, taking delivery and further supplying (r 3(4)‑(5)). The “Perth area” is defined by Schedule 1 as the list of local government districts to which the RVP limits apply. The term summer is defined as the period from the start of 15 October to the end of 15 April (r 3(1)). These definitions determine who has duties, when duties bite and where (r 3; Schedule 1).

Two regulated characteristics: MTBE and Reid Vapour Pressure. MTBE is limited to 0.10% v/v in petrol supplied or used in the State (r 9(1)). The MTBE measurement is fixed to ASTM D4815 (r 18). RVP is the volatility measure used to control evaporative emissions and is measured under any of ASTM D323, D5190 or D5191 (r 19). RVP limits vary by petrol type and by timing and averaging method: before and up to 15 April 2016 a 30‑day average with at least four samples was required and limits were 67 kPa for non‑blended petrol and 74 kPa for prescribed blended petrol (r 10(2)‑(3)); on or after 15 October 2016 the per‑supply limits are 64 kPa for non‑blended petrol and 71 kPa for prescribed blended petrol, with an additional monthly volumetric average limit of 62 kPa applicable to non‑blended petrol (r 11(2)‑(4)). Prescribed blended petrol means petrol containing at least 4% and no more than 10% ethanol by volume (r 3(1)).

Record keeping and sampling rules are concepts that operationalise the limits. Each petrol product must be analysed for each batch entered for home consumption and, where applicable, RVP must be measured for product supplied or used in the Perth area during summer (r 16(3)‑(4)). Records must specify the test used and the result and be retained for 24 months (r 14(1)‑(2)). For RVP averaging, r 10(3) requires at least 4 samples on separate days at regular intervals over any 30‑day period; r 11(4) requires a sample from each batch with the monthly volumetric average calculated by weighting sample RVPs by batch volumes.

Compliance instruments and defences. Suppliers must give written warranties to downstream distributors that supplied fuel complied with the regulations (r 17(1)). There is a distributor defence to an alleged MTBE offence if all petrol in the distributor’s possession was the subject of a fuel warranty from the supplier (r 9(2)). A further defence applies for offences involving fuel in vehicles where the defendant proves the fuel was put into the vehicle at a place where its use would not have been an offence (r 20). Monetary penalty exposure is set at $5,000 per offence (r 21).

Exemptions. Regulation 3A lists exclusions from the regulations (aircraft petrol, petrol for motorsport at regulated events/facilities, diesel, LPG, LNG, CNG and alcohols including ethanol). Regulation 3B provides time‑limited relief where a state of emergency is declared under the Fuel, Energy and Power Resources Act 1972 s 43, exempting suppliers or distributors from specified requirements while the order is in force (r 3B(1)‑(2)).

The regulations create primary legal obligations for two categories of commercial actors: fuel suppliers and fuel distributors, as defined in regulation 3. A fuel supplier is a person who enters fuel for home consumption and either supplies it to another person or uses it for their own purposes (r 3(4)). A fuel distributor is a person who takes delivery of fuel from a supplier or another distributor and supplies it to another person for that person’s use, even if the distributor also uses some fuel for its own purposes (r 3(5)). Those definitions capture importers, refiners, wholesalers and intermediate distributors who handle fuel subject to customs or excise entry for home consumption (r 3(1), definition of “entered for home consumption”).

Downstream retailers who simply sell to end users will be caught if they are distributors or if they have entered fuel for home consumption and supply it, and will therefore be responsible for sampling, record keeping and warranty duties where applicable (r 3(4)‑(5); r 16). End users are indirectly affected because non‑conforming fuel may not lawfully be supplied, and because distributors and suppliers must manage testing and warranties that may affect availability and labelling at retail.

The regulations also affect laboratories and testing providers through the requirement that specified ASTM test methods be used for MTBE and RVP measurements (r 18; r 19). Persons performing analyses must create records that identify the test used and the result (r 14(1)) and retain those records for 24 months (r 14(2)). This imposes a documentation obligation on testing providers and on fuel businesses that commission tests.

Local government areas listed in Schedule 1 are functionally relevant because the RVP rules apply to petrol supplied or used in the listed Perth area during summer. Businesses operating in those LGAs must observe the seasonal RVP limits and the sampling and averaging methodologies set out in regulations 10 and 11 and regulation 16 (r 10; r 11; r 16(4)). Motorsport organisations and certain uses are carved out: petrol for aircraft or petrol used solely for motor racing at an event or facility approved or recognised by a motorsport organisation is outside the scope of the regulations (r 3A(a)). Diesel, LPG, LNG, CNG and alcohol fuels are also excluded from the regulations (r 3A(b)‑(f)). Where a state of emergency is declared under the Fuel, Energy and Power Resources Act 1972 s 43 covering the State or part of it, suppliers and distributors may supply or use petrol that does not meet the relevant specifications without committing an offence during the period the order is in force (r 3B).

Compliance risk falls most heavily on suppliers who must conduct batch analyses (r 16(3)), give written warranties to downstream distributors (r 17(1)), and otherwise ensure that petrol supplied into the market complies with MTBE and, where relevant, RVP limits. Distributors face offence exposure but are afforded a specific defence to an MTBE charge if they can show all petrol in their possession at the material time was supplied under warranty (r 9(2)).

Duties are allocated primarily to fuel suppliers and distributors and are expressed in criminal offence terms. MTBE content duty: no person who supplies or uses petrol at a place in the State may supply petrol if the MTBE level exceeds 0.10% v/v (r 9(1)). Distributor defence: a fuel distributor can defend an alleged MTBE offence by proving that all petrol in its possession at the time was subject to a fuel warranty given by the supplier (r 9(2)). MTBE measurement is prescribed by ASTM D4815 (r 18), meaning compliance requires using that analytical method.

RVP duties: for the Perth area in summer the RVP limits and averaging regimes impose direct duties on fuel suppliers who supply or use petrol there during summer. The applicable RVP limit and averaging rule depends on the date and petrol type. Until 15 April 2016 a 30‑day averaging regime applied (r 10(1)‑(3)). On or after 15 October 2016 per‑supply RVP ceilings and a monthly volumetric averaging regime apply (r 11(1)‑(4)). Where monthly volumetric averaging is required, suppliers must take a sample from each batch supplied or used during the month and calculate a weighted average by batch volume in accordance with r 11(4)(a)‑(d). RVP test methods are prescribed by ASTM D323, D5190 or D5191 (r 19).

Record keeping duties: regulation 14 requires that where Part 4 requires a record of an analysis, the record must specify the test used and the result and be retained for 24 months after the event to which it relates (r 14(1)‑(2)). Regulation 16 makes it an offence for a fuel supplier not to ensure analyses and calculations are conducted and not to keep records for each petrol product supplied or used at a place in the State (r 16(2)). Each petrol product must be analysed for each batch entered for home consumption (r 16(3)).

Warranty duties: a person who supplies fuel to a fuel distributor or a person who supplies fuel to a fuel distributor must give a written warranty that the fuel has been supplied in accordance with these regulations (r 17(1)). No warranty obligation arises where regulation 3B exempts the supplier from compliance with r 9, r 10(2) or r 11(2)‑(3) because of a declared state of emergency (r 17(2)). It is an offence to omit to give the warranty (r 17(3)) and an offence to give a warranty that is false (r 17(4)).

Defensive rights are limited and specific. The distributor’s MTBE defence is evidence‑based and only applies where the distributor proves the whole of the petrol in its possession at the material time was supplied under warranty (r 9(2)). A person charged with an offence involving the use of fuel in a vehicle can defend by proving the fuel was put into the vehicle at a place where it would not have been an offence to use that fuel under these regulations (r 20). Where a state of emergency is declared under the Fuel, Energy and Power Resources Act s 43 covering the whole State or part of it, the supplier or distributor does not commit an offence under r 9(1) for non‑conforming petrol supplied or used at a place in that area while the order is in force (r 3B(1); r 3B(2) provides the same relief for specified RVP provisions).

Liability exposure and penalties. The monetary penalty for breach of any of the regulations is a fine of $5,000 (r 21). The text does not provide administrative measures such as infringement notices, licence conditions or tiered penalties; it sets a single criminal penalty for offences in the instrument (r 21).

Interaction with customs and excise. The definitions of petrol and diesel and the concept of “entered for home consumption” are expressly linked to the Commonwealth Customs Act 1901 and Excise Act 1901, which determines whether the product is within the regulatory scope as fuel entered for home consumption (r 3(1), definition of “entered for home consumption”). This links the application of duties to goods that have been lawfully entered for domestic market supply.

The instrument establishes criminal penalties and limited statutory defences; it does not itself create an administrative enforcement regime such as licensing, civil pecuniary penalties, injunctive relief, suspension powers or routine compliance audits in the text. The sole penalty provision is regulation 21 which states that a person who commits an offence under these regulations is liable to a fine of $5,000 (r 21). The regulations frame breaches of content limits, record keeping, analysis and warranty obligations as offences (see r 9(1), r 10(2), r 11(2)‑(3), r 16(2), r 17(3)‑(4)), exposing suppliers and distributors to criminal or penalty proceedings subject to the legal processes established elsewhere.

Statutory defences reduce exposure in two explicit circumstances. First, regulation 9(2) provides that a fuel distributor charged with an MTBE offence can defend by proving all petrol in the distributor’s possession was the subject of a fuel warranty given by the supplier. That defence limits distributor liability where upstream warranties exist and are documented (r 9(2)). Second, regulation 20 is a use‑in‑vehicle defence: where the alleged offence involves the use of fuel in a vehicle at a place, it is a defence to show the fuel was put into the vehicle at a place at which its use would not have been an offence (r 20). Third, regulation 3B provides a time‑limited immunity from certain offences during an order under the Fuel, Energy and Power Resources Act 1972 s 43 declaring a state of emergency covering the State or the Perth area (r 3B(1)‑(2)).

Enforcement responsibilities and procedures are not detailed. The regulations do not in their text identify an enforcement agency, investigative powers, testing or sampling powers for inspectors, or civil penalty alternatives; those functions would typically be exercised under the parent statute, the Environmental Protection Act 1986, or other administrative instruments. The regulations do not provide for administrative infringement notices or graduated sanctions; the statutory form is a single fine amount for any offence under the regulations (r 21).

Record keeping and evidential implications. The obligation to keep records of the test used and the result for 24 months (r 14(1)‑(2)) creates an evidential requirement that will be relevant in an enforcement investigation or prosecution. Non‑compliance with the record keeping duty itself is an offence under regulation 16(2) where a fuel supplier does not ensure analyses and keep records in accordance with regulation 14. The prescribed ASTM test methods (r 18; r 19) standardise evidentiary practice; a regulator or defendant will rely on those methods to establish compliance or breach.

Monetary magnitude and legal effect. The flat $5,000 fine applies per offence without statutory scaling in the text. For businesses handling large volumes of petrol the fee exposure must be read with the frequency risk of non‑compliance and potential multiple counts per batch, per product, per period. The regulations do not specify maximum daily fines or penalties tied to volume or harm; they set a single statutory amount (r 21).

The regulations are made under the Environmental Protection Act 1986 and they reference Commonwealth customs and excise law to identify the supply chain point at which persons become fuel suppliers or distributors. The defined term “entered for home consumption” is expressly linked to the Customs Act 1901 and the Excise Act 1901 of the Commonwealth (r 3(1), definition of “entered for home consumption”), so the threshold for whom the regulations capture depends on the customs/excise status of fuel imports or manufacture for domestic consumption. That cross‑reference ties the regime to federal border and excise procedures.

Exemptions and emergency orders. Regulation 3B interacts with the Fuel, Energy and Power Resources Act 1972 by providing an exemption from certain regulatory offences when an order under s 43 of that Act , declaring a state of emergency , is in force for either the whole State or a relevant part (r 3B(1)‑(2)). The exemption covers non‑compliance with r 9(1) when the emergency order covers the place where petrol is supplied or used (r 3B(1)), and covers specified RVP provisions in r 10(2) and r 11(2)‑(3) if the emergency order covers the Perth area or includes it (r 3B(2)). This interaction introduces external administrative discretion from the Fuel, Energy and Power Resources Act into compliance calculations.

Testing standards referenced are ASTM methods; the regulations require that MTBE be measured in accordance with ASTM D4815 (r 18) and RVP in accordance with ASTM D323, D5190 or D5191 (r 19). These references make compliance depend on the availability and interpretation of international test methodology standards. Laboratories and regulated parties must therefore conform to those technical standards to produce legally efficacious results.

Parent Act enforcement and administrative architecture. The regulations themselves do not specify inspection or sampling powers, administrative sanctions beyond a single fine, or procedural mechanisms for issuing notices; these aspects would ordinarily be found in the parent Environmental Protection Act 1986 or other administrative instruments. For example, if the Environmental Protection Act confers powers on the Department of Environment or inspectors to enforce regulatory limits, those powers will be the mechanism by which r 9, r 10, r 11, r 16 and r 17 are monitored and enforced. The regulations rely on that enforcement ecosystem without repeating it.

Relationship to local government boundaries. The Perth area is defined by Schedule 1 as a list of local government districts under the Local Government Act 1995. This geographic definition interacts with local market conditions and local distribution arrangements: duties to measure and limit RVP apply only where petrol is supplied or used within those LGAs during summer (r 3(1), Schedule 1; r 10; r 11). Businesses operating partly inside and partly outside the listed LGAs must manage inventory and distribution to satisfy the different obligations that apply by place.

Regulatory amendments and deletions. The compilation table and textual notes record prior instruments and amendments, including that Part 2 and several regulations were deleted by the 2012 amendments (notes accompanying the reprint). Many functional changes in the text derive from amendment instruments recorded in the compilation table; compliance advice should be read with the consolidated text and the Gazette amendment history set out in the compilation table.

The reprint contains an explicit compilation table recording the instrument’s origins and the amendments that produced the current consolidated text as at 23 November 2012. The original instrument was gazetted as the Environmental Protection (Diesel and Petrol) Regulations 1999 on 17 December 1999 and commenced 1 January 2000 (Compilation table). An amendment instrument, the Environmental Protection (Diesel and Petrol) Amendment Regulations 2000, was made on 19 December 2000 (Compilation table). A later amendment, the Environmental Protection (Diesel and Petrol) Amendment Regulations 2012, was gazetted 9 October 2012 and most provisions other than r 1 and r 2 commenced on 10 October 2012 (Compilation table; notes under r 2). The reprint captures the consolidated text as at 23 November 2012 (reprint note).

Textual indicators in the body show specific inserts and deletions. Regulation 3 was amended (see bracketed note after r 3), regulation 3A was inserted by the 2000 amendment and subsequently amended (r 3A insert and amendment notes). Regulation 3B was inserted by the 2012 amendment (text shows r 3B inserted: Gazette 9 Oct 2012 p. 4750). Several provisions and whole parts were removed in the 2012 amendments: Part 2 (rules 4‑6) is noted as deleted (Gazette 9 Oct 2012 p. 4750), regulations numbered 7 and 8 are deleted (note in Part 3), and regulations 12, 13, 15 and 22 are shown as deleted with Gazette references to the 2012 amendments. Schedule 1 was amended on 9 October 2012 as indicated in its margin note.

The 2012 amendments introduced and reorganised Part 4 (record keeping and testing requirements) and Part 5 (Miscellaneous) headings, with r 16 and r 17 newly inserted or amended at that time (see insertion notes for r 16, r 17, r 18, r 19). The RVP provisions were updated with new numerical limits and averaging methodologies: r 10 (30‑day averaging rule) is inserted and explicitly applies until the end of 15 April 2016 and r 11 is inserted to apply on and after 15 October 2016, reflecting a staged transition in the RVP compliance regime (r 10(1); r 11(1); amendment notes). The compilation table records the renaming of the instrument from Diesel and Petrol to Petrol only and a change of citation note.

The reprint notes its date (23 November 2012) and lists the amendment instruments and commencement dates. It does not record any amendments after that reprint date. The text of the reprint includes parenthetical Gazette references showing where specific regulations were amended, inserted or deleted. For current compliance advice, users must confirm whether further amendments have been made after 23 November 2012 and reconcile any later changes with the consolidated text.

The reprint contains no references to judicial decisions, appeals, prosecutions or other litigation arising under these regulations. The text and compilation table record only the making and amendment of the regulations and do not identify any cases or determinations interpreting their provisions. Consequently, there is no case law recorded in this instrument to clarify points such as the scope of “entered for home consumption”, the proper interpretation of the warranty defence in r 9(2), the interaction of r 3A exclusions with blended petrol definitions, or evidential requirements for RVP averaging calculations.

Because the reprint does not include litigation history, any interpretive uncertainty in the drafting would be resolved by reference to higher court decisions or administrative determinations outside the text, if any exist; however those are not provided in the source. Practitioners seeking precedents or prosecutorial practice should therefore search case law databases and enforcement agency records for decisions made after the reprint date to determine how courts and regulators have applied the MTBE and RVP limits, the warranty defences and record keeping obligations in practice.

The instrument itself sets procedural and evidential expectations through its testing and record keeping prescriptions (r 14; r 18; r 19) which will inform evidentiary standards in any enforcement proceeding. In the absence of reported litigation in the instrument, reliance on the prescribed ASTM methods and on maintaining the required records for 24 months (r 14(1)‑(2)) will be the principal means for regulated parties to create a defensible compliance record.

Pay attention to the definitional and scope nuances that determine when duties bind and when statutory defences are available. “Entered for home consumption” is a key trigger for a person to be a fuel supplier and thus subject to the analyser and warranty duties; that term is defined by reference to the Customs Act 1901 and the Excise Act 1901 (r 3(1)). The regulations therefore capture activity that is commercially treated as domestic supply under Commonwealth law, and you must verify the customs/excise status of product to determine regulatory obligations.

The interaction between r 3A and the definition of “prescribed blended petrol” can be a source of confusion. Regulation 3A excludes “alcohols, including ethanol” from the regulations (r 3A(f)), while the regulations define prescribed blended petrol as petrol containing at least 4% and no more than 10% ethanol by volume (r 3(1)). The text does not say that petrol containing ethanol is excluded; rather, it expressly treats petrol blends as petrol where the definition so provides. Careful reading is required to determine whether a product is a petrol blend subject to the RVP and MTBE limits or an “alcohol” excluded by r 3A. The regulations should be read literally: pure alcohol fuels are excluded, petrol blends containing ethanol are defined as petrol blends and appear to remain within scope unless the supplier can show the product is an excluded alcohol fuel under r 3A.

Geographic and seasonal triggers are precise. RVP limits apply only in the Perth area as defined by Schedule 1 and only during the summer period defined in r 3(1) (15 October to 15 April). Suppliers who move fuel between areas on different days must track place of delivery and use: the regulations state that supply at a place occurs if delivery is taken at that place and that fuel is used at a place if it is put into the vehicle’s tank there (r 3(2)‑(3)). These rules mean record keeping must link batch samples to place and date to establish whether RVP restrictions applied.

Averaging rules have sampling and calculation requirements that, if misunderstood, can lead to non‑compliance. Until 15 April 2016 r 10 required at least 4 samples on separate days at regular intervals during a 30‑day period to compute an average RVP (r 10(3)). On and after 15 October 2016 r 11 introduced a per‑supply absolute cap and a monthly volumetric averaging obligation for non‑blended petrol, calculated by sampling each batch and weighting by batch volumes (r 11(3)‑(4)). Missing a single batch sample under r 11(4)(a) undermines the volumetric average calculation and can create exposure, because the monthly average is computed from samples associated with each batch and weighted by volume (r 11(4)(a)‑(d)).

Warranties must be written and accurate. Suppliers must give written warranties to fuel distributors that the fuel was supplied in accordance with the regulations and failure to provide the warranty is an offence (r 17(1), (3)). Giving a warranty that is false is also an offence (r 17(4)). Distributors’ defence under r 9(2) depends on the existence and scope of such warranties. Practical risk: informal or poorly documented assurances will not create the statutory defence; the warranty must be written and traceable.

Record retention is relatively short but strictly required. Records of tests and results must be retained for 24 months (r 14(2)). Firms must ensure retention systems capture test method identifiers as well as numerical results (r 14(1)). Loss of records can itself be an offence if it undermines the supplier’s ability to show analyses and calculations were conducted as required (r 16(2)).

Emergency exemptions are narrow and conditional. Regulation 3B provides an exemption during a declared state of emergency under the Fuel, Energy and Power Resources Act 1972 s 43 (r 3B(1)‑(2)), but the exemption only applies while the order is in force and only for the areas covered by the order. Reliance on a purported emergency exemption without verifying the statutory order’s scope and duration risks prosecution.

Testing methodology choices have operational consequences. The regulations prescribe specific ASTM standards for MTBE (D4815) and RVP (D323, D5190, D5191) (r 18; r 19). Different ASTM methods have different sampling, apparatus and precision characteristics. Selecting an inappropriate or non‑prescribed method will not meet the statutory measurement requirement.

Penalty magnitude and multiplicity. A single flat penalty of $5,000 per offence (r 21) can multiply across batches, periods and sites. The regulations do not limit prosecutions for repeated or systemic breaches, so exposure may accumulate.

Checklist approach founded on the text. First, identify whether you are a fuel supplier or a fuel distributor per regulation 3(4)‑(5). If you enter fuel for home consumption and either supply it or use it, you are a fuel supplier and must comply with the analysis, record keeping and warranty obligations (r 3(4); r 16). If you take delivery from a supplier and resupply it, you are a distributor and must ensure you receive the written warranty from the supplier and retain it, because that warranty is central to the distributor’s defence in r 9(2) (r 17(1); r 9(2)).

Testing and sampling. For every petrol product (as defined by r 16(1)) conduct analyses on each batch entered for home consumption (r 16(3)). Measure MTBE using ASTM D4815 (r 18). Where the petrol is supplied or used in the Perth area during summer, measure RVP using one of the prescribed ASTM methods (D323, D5190 or D5191) (r 19; r 16(4)(b)). For suppliers operating during the historic transitional period prior to 15 April 2016 follow r 10 sampling (at least 4 samples on separate days across any 30‑day window) to compute the 30‑day average (r 10(3)). For supply on or after 15 October 2016, for non‑blended petrol ensure per‑supply RVP does not exceed 64 kPa and, if monthly volumetric averaging applies, collect a sample from each batch supplied during the month and compute the weighted monthly average by multiplying each sample’s RVP by the batch volume divided by the total monthly volume then summing (r 11(2)‑(4)). If supplying prescribed blended petrol, use the specific limits set out in r 10(2)(b)(ii) or r 11(2)(b)(ii) as applicable.

Record keeping and retention. For each analysis make a record of the test used and the result and retain each record for 24 months after the event to which it relates (r 14(1)‑(2); r 16(2)(b)). Records should link batch identifiers, volumes, dates, place of delivery and the sample results to support any required RVP averaging and to show compliance with MTBE limits. Ensure your records preserve the identity of the ASTM method used to avoid evidential disputes about methodology (r 14(1); r 18; r 19).

Warranties and documentation flows. If you supply fuel to a fuel distributor or to a person who supplies a fuel distributor, provide a written warranty that the fuel was supplied in accordance with these regulations (r 17(1)). Keep copies of warranties provided and received. Avoid oral-only assurances; r 17 requires written warranties and r 9(2) requires proof of such warranties to avail a distributor of the MTBE defence. If you are a distributor, insist on receiving written warranties upstream and file them with batch records.

Operational controls. In the Perth area during summer manage inventory flows to ensure that petrol intended for supply there satisfies the RVP limits. If you supply across multiple geographic areas, label and segregate stocks where necessary and ensure batch sampling corresponds to the place of delivery and the place of first use per regulations r 3(2)‑(3). Suppliers that use volumetric averaging must track batch volumes carefully to compute weighted averages (r 11(4)(a)‑(d)).

Emergency and exclusion planning. Confirm whether any fuel you handle falls into the exclusions in r 3A (aircraft fuel, motorsport exception, diesel, LPG, LNG, CNG, alcohols including ethanol). If you intend to rely on any exclusion, keep documentary proof of the use case (for example, documentation that fuel is for use in an aircraft or for an approved motorsport event). If a state of emergency is declared under the Fuel, Energy and Power Resources Act s 43, check the scope and duration of the order to determine whether r 3B relief applies and record the statutory order reference to support any non‑compliance during that period (r 3B).

Quality assurance with labs. Use accredited laboratories that can perform the prescribed ASTM methods and provide records that identify the specific ASTM method and the numerical results. Ensure sampling protocols meet the requirements of the chosen ASTM method so that test results will be admissible and defensible against enforcement action (r 18; r 19; r 14(1)).

Legal risk mitigation. Maintain documented procedures for batch testing, RVP averaging calculations and warranty issuance. Where possible, obtain legal review of warranty wording to ensure it ties to the statutory obligations and supports distributors’ statutory defences. Document chain of custody from supplier to distributor to retailer to enable the distributor defence under r 9(2) when appropriate.

Audit and retention policy. Implement document retention for test records and warranty documents for at least 24 months from the relevant event (r 14(2)). Conduct internal or third‑party audits to verify that sample collection, test methods, calculations and record keeping comply with r 16 and Part 4.

Responding to enforcement. If contacted by an enforcement agency, produce the records showing the test method, sample result, batch identity and warranty documentation. The prescribed ASTM references and the 24‑month retention obligation make records the primary evidence of compliance (r 14; r 18; r 19). If the matter involves alleged use in vehicles, explore the r 20 defence by demonstrating where fuel was put into the vehicle (r 20).

In sum, compliance requires: identify supplier/distributor status; test every batch as required; use prescribed ASTM methods; keep explicit written warranties to downstream distributors; maintain records linking batches, volumes and places of delivery; compute averaging in accordance with the relevant regulation; and retain records for 24 months. Following those steps implements the specific duties set out in the regulations and preserves statutory defences where available.