Indiana’s hazardous waste management program is primarily governed by the Indiana Department of Environmental Management (IDEM) under the authority of the Indiana Code, particularly IC 13-22-1, and its corresponding administrative rules, which are largely promulgated under 329 Indiana Administrative Code (IAC). These regulations establish a framework for the identification, generation, transportation, treatment, storage, and disposal of hazardous waste, mirroring many aspects of the federal Resource Conservation and Recovery Act (RCRA). A key concept in this framework is the definition of hazardous waste, which includes characteristic wastes (ignitable, corrosive, reactive, and toxic) and listed wastes. Generators of hazardous waste are subject to specific requirements based on the quantity of waste they produce per month. These generator categories include very small quantity generators (VSQGs), small quantity generators (SQGs), and large quantity generators (LQGs), each with distinct regulatory obligations. For instance, LQGs face the most stringent requirements concerning waste accumulation, personnel training, emergency preparedness, and record-keeping. The manifest system is a crucial tool for tracking hazardous waste from its point of generation to its final disposition, ensuring accountability and proper management throughout the “cradle-to-grave” lifecycle. Furthermore, Indiana law addresses specific waste streams and management practices, such as waste minimization, pollution prevention, and corrective action at permitted facilities. The regulatory scheme also includes provisions for permitting treatment, storage, and disposal facilities (TSDFs) and outlines procedures for enforcement and penalties for non-compliance. Understanding the generator status thresholds is fundamental to a facility’s compliance strategy, as it dictates the level of regulatory oversight and the specific operational and reporting duties.

The Indiana Department of Environmental Management (IDEM) oversees hazardous waste management under the framework of the Resource Conservation and Recovery Act (RCRA) as implemented in Indiana. Specifically, Indiana Administrative Code (IAC) 327 IAC 6 and 327 IAC 7, along with related federal regulations, govern the generation, transportation, treatment, storage, and disposal of hazardous waste. A key aspect of these regulations is the identification and management of hazardous waste. Waste is characterized as hazardous if it exhibits a hazardous characteristic (ignitability, corrosivity, reactivity, or toxicity) or if it is listed as a hazardous waste by the EPA or the state of Indiana. The Land Disposal Restrictions (LDR) program, established under RCRA and mirrored in Indiana regulations, mandates that hazardous wastes must meet specific treatment standards before they can be land disposed. These treatment standards are technology-based, meaning they are derived from the performance of specific treatment technologies. For wastes exhibiting the toxicity characteristic, the treatment standards are generally expressed as concentration levels of specific constituents in the waste or a treatment residue. For wastes listed as hazardous, the treatment standards are also technology-based and may vary depending on the waste code and the specific treatment method employed. The generator is responsible for determining if their waste is hazardous and for ensuring compliance with all applicable management and treatment standards. The scenario describes a generator in Indiana producing a waste that exhibits the toxicity characteristic due to elevated levels of lead, a common constituent that triggers this characteristic. The generator must consult the relevant Indiana Administrative Code provisions, specifically those pertaining to Land Disposal Restrictions for toxicity characteristic wastes. These regulations will specify the required treatment standards for lead. For instance, if the waste is a D008 hazardous waste (due to lead toxicity), the LDR treatment standard for lead is typically achieved through stabilization or other treatment technologies that reduce the leachability of lead. The specific concentration limit for lead in the treated residue, as defined by the LDR standards, must be met before the waste can be disposed of in a permitted hazardous waste landfill. This involves understanding the treatment standards outlined in 40 CFR Part 268, Subpart D, which are adopted by reference in Indiana, and potentially state-specific additions. The generator must ensure that the chosen treatment method effectively reduces the lead concentration to or below the applicable LDR standard.

The Indiana Department of Environmental Management (IDEM) has established specific requirements for the management of hazardous waste. Under Indiana Administrative Code (IAC) 327 IAC 3, facilities that treat, store, or dispose of hazardous waste must obtain a permit. However, certain activities or waste streams may be exempt from full permitting requirements under specific conditions. The question pertains to the threshold for when a facility generating hazardous waste must initiate the process of obtaining a hazardous waste permit or a permit by rule. In Indiana, the generator status is determined by the amount of hazardous waste produced per month. A small quantity generator (SQG) generates between 100 and 1,000 kilograms of hazardous waste per month. A large quantity generator (LQG) generates 1,000 kilograms or more of hazardous waste per month. The requirement to obtain a permit, or operate under a permit-by-rule, is triggered when a facility’s generation rate exceeds the threshold for SQG status and moves into LQG status, or if the facility is a treatment, storage, or disposal facility (TSDF) regardless of generation quantity if it handles hazardous waste. For a facility that is not a TSDF but generates hazardous waste, the primary trigger for permitting or permit-by-rule is exceeding the SQG threshold and becoming an LQG, or if the waste is acutely hazardous. The question asks about the threshold for requiring a permit or permit-by-rule for a generator of hazardous waste, not a TSDF. The critical point is when the generator status changes to one that mandates a permit. This typically occurs when a generator exceeds 1,000 kilograms of hazardous waste per month, or generates any amount of acutely hazardous waste. Therefore, generating 1,000 kilograms or more of hazardous waste per calendar month necessitates the facility to comply with permitting or permit-by-rule requirements as a generator.

The Indiana Administrative Code (IAC) 329 governs hazardous waste management. Specifically, 329 IAC 3.1-1-5 defines “used oil” and outlines its management as a hazardous waste if it exhibits a characteristic of hazardous waste or is mixed with a listed hazardous waste. However, certain exemptions and management standards apply to used oil that is not mixed with hazardous waste and is recycled. Under 329 IAC 3.1-4-13, used oil that is reprocessed or rerefined is subject to specific management standards. If a generator accumulates used oil for recycling purposes, they must comply with the accumulation time limits and container management standards outlined in 329 IAC 3.1-4-13. This section specifies that used oil generators may accumulate used oil for up to 180 days without a permit, provided certain conditions are met, including proper labeling and containment. Furthermore, 329 IAC 3.1-4-13(b)(2) states that if a generator cannot manage the used oil in accordance with these standards, it must be managed as hazardous waste. Therefore, exceeding the 180-day accumulation period without proper management or a permit would necessitate its classification and management as hazardous waste under the applicable Indiana regulations.

The Indiana Department of Environmental Management (IDEM) enforces regulations that govern hazardous waste management within the state. A key aspect of these regulations involves the identification and management of specific waste streams. For a facility generating a waste stream that is not explicitly listed as hazardous by the EPA or Indiana, the generator must determine if the waste exhibits any of the four hazardous characteristics: ignitability, corrosivity, reactivity, or toxicity. This determination is crucial for proper classification and subsequent management. If the waste exhibits any of these characteristics, it is classified as hazardous. The Toxicity Characteristic Leaching Procedure (TCLP) is a specific laboratory test used to determine if a waste exhibits the toxicity characteristic. If the leachate from a TCLP test contains any of the regulated contaminants at or above the specified regulatory levels, the waste is deemed hazardous due to toxicity. In the scenario provided, the facility is generating a waste stream that is not a listed hazardous waste. They have conducted a TCLP analysis for certain heavy metals, including lead. The TCLP result for lead in the waste leachate was 7.5 mg/L. The regulatory limit for lead under the toxicity characteristic (40 CFR Part 261.24, which is adopted by Indiana) is 5.0 mg/L. Since 7.5 mg/L is greater than 5.0 mg/L, the waste exhibits the toxicity characteristic and is therefore classified as a hazardous waste. This classification mandates that the facility must comply with all applicable hazardous waste management regulations, including those pertaining to storage, transportation, and disposal, as outlined in Indiana Administrative Code Title 329, Article 11. The determination is solely based on the exceedance of the regulatory threshold for lead as identified through the TCLP testing.

The Indiana Department of Environmental Management (IDEM) oversees hazardous waste management under Indiana law, which is largely aligned with the federal Resource Conservation and Recovery Act (RCRA). When a facility generates hazardous waste, it must determine if it qualifies as a small quantity generator (SQG) or a large quantity generator (LQG) based on its monthly generation rate. For SQGs, the monthly generation limit for hazardous waste is between 100 kilograms (kg) and 1,000 kg. For LQGs, the generation rate exceeds 1,000 kg per month. Generators are also subject to accumulation time limits. SQGs can accumulate hazardous waste on-site for up to 180 days without a permit, provided they meet specific storage requirements. LQGs have a similar 90-day accumulation limit without a permit. The question asks about the maximum accumulation period for hazardous waste at a facility that generates between 100 kg and 1,000 kg of hazardous waste per month in Indiana. This classification places the facility as a Small Quantity Generator (SQG). SQGs are permitted to accumulate hazardous waste on-site for a maximum of 180 days without obtaining a hazardous waste storage permit, as long as they comply with specific storage conditions, such as proper container management and labeling. Therefore, the correct accumulation period for this SQG is 180 days.

Indiana’s Hazardous Waste Management Act, codified in Indiana Code Title 13 Article 22, establishes a comprehensive framework for the management of hazardous waste within the state. This framework is largely modeled after the federal Resource Conservation and Recovery Act (RCRA). A critical aspect of this legislation is the definition and regulation of hazardous waste. Under Indiana law, a waste is considered hazardous if it is specifically listed by the Environmental Protection Agency (EPA) or if it exhibits one or more of the characteristics of hazardous waste: ignitability, corrosivity, reactivity, or toxicity. The toxicity characteristic is determined through the Toxicity Characteristic Leaching Procedure (TCLP). If a waste fails the TCLP for any of the regulated constituents, it is classified as hazardous. For example, if a waste exhibits a pH less than or equal to 2 or greater than or equal to 12.5, it would be classified as corrosive. Similarly, if a waste contains certain heavy metals above specified TCLP limits, such as lead exceeding 5.0 mg/L, it would be classified as toxic. The generator of the waste bears the primary responsibility for determining if their waste is hazardous. This involves knowledge of the process that generated the waste and testing if necessary. Once a waste is determined to be hazardous, it is subject to stringent management standards, including cradle-to-grave tracking, proper storage, transportation, treatment, and disposal. The Indiana Department of Environmental Management (IDEM) is the primary regulatory agency responsible for implementing and enforcing these provisions.

The Indiana Department of Environmental Management (IDEM) oversees hazardous waste management within the state, primarily under the authority of the Indiana Hazardous Waste Management Act (IHGMA) and the associated administrative rules, found in 329 Indiana Administrative Code (IAC) Article 3.1. This article details requirements for hazardous waste generators, transporters, and treatment, storage, and disposal facilities (TSDFs). Specifically, 329 IAC 3.1-3-1 addresses the identification and listing of hazardous wastes. When a waste exhibits a characteristic of hazardous waste (ignitability, corrosivity, reactivity, or toxicity) or is specifically listed by the U.S. Environmental Protection Agency (EPA) or the state of Indiana, it is subject to regulation. The generator is responsible for determining if their waste is hazardous. If a solid waste is not excluded by rule and exhibits any of the characteristics of a hazardous waste, it is a hazardous waste. For toxicity, this determination is made through testing using the Toxicity Characteristic Leaching Procedure (TCLP) as outlined in federal regulations, incorporated by reference in Indiana’s rules. If the leachate from a waste sample contains any of the specified contaminants at or above the regulatory levels, the waste is considered toxic hazardous waste. For instance, if a waste sample, when subjected to TCLP, yields a leachate concentration of lead at 5.5 mg/L, this exceeds the federal regulatory level of 5.0 mg/L, making the waste a D008 hazardous waste. Therefore, the generator must manage this waste according to all applicable hazardous waste regulations in Indiana.

The Indiana Department of Environmental Management (IDEM) oversees hazardous waste management under the authority of the Resource Conservation and Recovery Act (RCRA) as implemented in Indiana. Generators of hazardous waste are subject to specific requirements based on the amount of hazardous waste they produce per month. These categories are Very Small Quantity Generators (VSQGs), Small Quantity Generators (SQGs), and Large Quantity Generators (LQGs). A VSQG generates 100 kilograms (220 pounds) or less of hazardous waste per month, or 1 kilogram (2.2 pounds) or less of acute hazardous waste per month. An SQG generates more than 100 kilograms but less than 1,000 kilograms (2,200 pounds) of hazardous waste per month. An LQG generates 1,000 kilograms or more of hazardous waste per month, or more than 1 kilogram of acute hazardous waste per month. The question describes a facility that generates 950 kilograms of hazardous waste and 1.5 kilograms of acute hazardous waste in a calendar month. To determine the generator status, we must consider both quantities. The hazardous waste quantity of 950 kg places the facility in the Small Quantity Generator category. However, the generation of 1.5 kg of acute hazardous waste per month exceeds the 1 kg limit for VSQGs and SQGs, thereby classifying the facility as a Large Quantity Generator, regardless of the non-acute hazardous waste volume. This is because the threshold for acute hazardous waste is more stringent and dictates a higher generator status if exceeded. Therefore, the facility is classified as a Large Quantity Generator.

The Indiana Hazardous Waste Management Act, codified under Indiana Code Title 13, Article 22, establishes the framework for managing hazardous waste within the state. This act is largely modeled after the federal Resource Conservation and Recovery Act (RCRA). A key aspect of this legislation is the definition and regulation of hazardous waste. Hazardous waste is defined by its characteristics (ignitability, corrosivity, reactivity, toxicity) or by its listing as a specific hazardous waste. The identification and management of these wastes are crucial for protecting public health and the environment. Generators of hazardous waste are responsible for determining if their waste is hazardous and for managing it according to Indiana Department of Environmental Management (IDEM) regulations, which are found in the Indiana Administrative Code, particularly at 329 IAC. Generators must obtain an EPA identification number, comply with accumulation time limits, use proper containers and labeling, and manifest shipments to permitted treatment, storage, or disposal facilities (TSDFs). The act also addresses requirements for transporters and TSDFs. The question revolves around the generator’s responsibility to correctly identify and manage waste based on its properties and potential environmental impact, aligning with the core principles of the Indiana Hazardous Waste Management Act and its implementing regulations. Specifically, the scenario presents a waste that exhibits a characteristic of hazardous waste as defined by both federal and state regulations, necessitating management as such.

The Indiana Department of Environmental Management (IDEM) regulates hazardous waste management under the authority of the Resource Conservation and Recovery Act (RCRA) and its state-specific implementations. A critical aspect of this regulation involves the identification and management of hazardous waste. For a solid waste to be classified as hazardous, it must either be listed by the EPA or exhibit a hazardous characteristic. The characteristic wastes are ignitability, corrosivity, reactivity, and toxicity. Toxicity is determined by the Toxicity Characteristic Leaching Procedure (TCLP). If a waste leaches specific contaminants above regulatory thresholds during the TCLP test, it is considered toxic hazardous waste. In Indiana, as in many states, the regulatory framework for hazardous waste mirrors the federal RCRA program. Therefore, a waste exhibiting any of the four characteristics, including toxicity as defined by TCLP, is subject to hazardous waste regulations. This means that even if a waste is not specifically listed, its inherent properties can render it hazardous. The question asks about a waste that is not listed but exhibits a hazardous characteristic. The characteristic of toxicity, determined by TCLP, is a primary way a non-listed waste can be classified as hazardous. Therefore, a waste that fails the TCLP test for any of the regulated contaminants would be considered a toxic hazardous waste under Indiana law. The other options are incorrect because while wastes can be listed, or exhibit other characteristics, the scenario specifically states the waste is *not* listed but *does* exhibit a characteristic, and toxicity via TCLP is a fundamental characteristic that triggers hazardous waste status.

The Indiana Department of Environmental Management (IDEM) oversees hazardous waste management under Indiana law, which is largely aligned with federal Resource Conservation and Recovery Act (RCRA) regulations. A key aspect of this regulation is the management of hazardous waste generators. Generators are classified based on the quantity of hazardous waste they produce per month. These classifications, such as Very Small Quantity Generators (VSQGs), Small Quantity Generators (SQGs), and Large Quantity Generators (LQGs), dictate the specific management, storage, record-keeping, and reporting requirements. VSQGs are subject to the least stringent requirements, while LQGs face the most comprehensive obligations. The classification is determined by the *acute* hazardous waste and *non-acute* hazardous waste generated in a calendar month. For example, a generator producing 100 kg of non-acute hazardous waste and 0.5 kg of acute hazardous waste in a month would be classified as an LQG because the generation of even a small amount of acute hazardous waste can significantly impact the generator’s status. Indiana’s regulations, as found in 329 Indiana Administrative Code (IAC) Article 3.1, mirror these federal distinctions and requirements. Understanding these thresholds is crucial for compliance and for correctly identifying the applicable management standards.

The Indiana Department of Environmental Management (IDEM) oversees hazardous waste management under the authority of the Resource Conservation and Recovery Act (RCRA) as implemented in Indiana. Specifically, 329 Indiana Administrative Code (IAC) 3.1 governs hazardous waste management. Generators of hazardous waste are classified based on the amount of hazardous waste they produce per month. A conditionally exempt small quantity generator (CESQG) is defined as a generator who produces no more than 100 kilograms (220 pounds) of hazardous waste per calendar month, or no more than 1 kilogram (2.2 pounds) of acutely hazardous waste per calendar month, and who does not accumulate at any time more than 1,000 kilograms (2,200 pounds) of hazardous waste. Small quantity generators (SQGs) are those who generate between 100 and 1,000 kilograms of hazardous waste per month. Large quantity generators (LQGs) are those who generate 1,000 kilograms or more of hazardous waste per month. The regulatory requirements, including manifest requirements, storage limits, and personnel training, vary significantly based on these classifications. Therefore, accurately determining a facility’s generator status is a fundamental step in complying with Indiana’s hazardous waste regulations.

Indiana’s hazardous waste management program, primarily governed by the Indiana Department of Environmental Management (IDEM) under the authority of the Indiana Environmental Management Act and the Resource Conservation and Recovery Act (RCRA) as adopted by the state, requires generators of hazardous waste to comply with specific record-keeping and reporting obligations. For large quantity generators (LQGs), a key requirement is the biennial report, which details the types and quantities of hazardous waste generated and how it was managed. Small quantity generators (SQGs) also have reporting requirements, though they are generally less extensive. The manifest system is a crucial tracking tool for all hazardous waste shipments, ensuring that waste is transported from the generator to a permitted treatment, storage, or disposal facility (TSDF). The manifest must accompany the waste at all times during transportation and be signed by each party involved in the chain of custody. Generators are responsible for retaining copies of these manifests for a specified period, typically three years from the date the waste was accepted by the initial transporter. This retention period is critical for demonstrating compliance and facilitating audits. The biennial report, when required, provides a comprehensive overview of a generator’s hazardous waste activities for a two-year period and is submitted to the state regulatory agency. Understanding the nuances of generator status, waste characterization, manifest completion, and reporting timelines is fundamental to lawful hazardous waste management in Indiana.

The Indiana Department of Environmental Management (IDEM) oversees hazardous waste management within the state, aligning with federal Resource Conservation and Recovery Act (RCRA) regulations. A key aspect of this is the identification and management of hazardous waste. When a generator determines that a solid waste is not hazardous, they must maintain records of this determination. This record-keeping requirement is crucial for demonstrating compliance and ensuring that only truly non-hazardous wastes are managed as such. The specific information required in this record includes the basis for the determination, which could be analytical testing results, process knowledge, or other reliable documentation. This documentation serves as evidence that the generator has exercised due diligence in classifying their waste streams according to the criteria established in Indiana’s hazardous waste rules, which are primarily found in 329 Indiana Administrative Code (IAC) Article 3.1. Maintaining these records for a period of at least three years from the date the waste was last generated is a standard compliance obligation, providing a sufficient timeframe for regulatory review.

The Indiana Department of Environmental Management (IDEM) oversees hazardous waste management under Indiana Administrative Code (IAC) 327. Specifically, IAC 327 is the primary regulation governing water pollution control, but it also contains provisions related to the management of hazardous waste when it impacts water resources or is generated by certain types of facilities regulated under water permits. The Resource Conservation and Recovery Act (RCRA) is the federal law that forms the basis for state hazardous waste programs. Indiana’s program is authorized by the U.S. Environmental Protection Agency (EPA) to implement RCRA. Generators of hazardous waste are subject to specific requirements based on the quantity of waste they produce per month. These categories are: Conditionally Exempt Small Quantity Generators (CESQGs), Small Quantity Generators (SQGs), and Large Quantity Generators (LQGs). The thresholds are defined as follows: CESQGs generate 100 kilograms (approximately 220 pounds) or less of hazardous waste per month, or 1 kilogram or less of acute hazardous waste per month. SQGs generate more than 100 kilograms but less than 1,000 kilograms of hazardous waste per month. LQGs generate 1,000 kilograms or more of hazardous waste per month. These distinctions are crucial because they dictate the stringency of regulatory requirements, including storage limits, personnel training, emergency preparedness, and reporting obligations. For instance, LQGs face the most comprehensive set of regulations. Understanding these generator categories is fundamental to compliance with Indiana’s hazardous waste management framework, which aligns with federal RCRA requirements.

Indiana’s hazardous waste regulations, primarily governed by the Indiana Department of Environmental Management (IDEM) under the authority of the Indiana Environmental Management Act and federal Resource Conservation and Recovery Act (RCRA) provisions as adopted and supplemented by Indiana, establish a framework for managing hazardous waste from generation to final disposal. A critical aspect of this framework is the identification and management of hazardous wastes. The definition of hazardous waste in Indiana aligns with federal definitions but can include state-specific listings or criteria. For a waste to be considered hazardous under Indiana law, it must meet the criteria of being listed or exhibiting a characteristic of hazardous waste. Characteristic wastes are those that are ignitable, corrosive, reactive, or toxic. The toxicity characteristic is determined by the Toxicity Characteristic Leaching Procedure (TCLP), which simulates leaching in a landfill. If the leachate from a waste sample exceeds regulatory limits for specific contaminants, the waste is classified as hazardous. For example, if a waste exhibits a characteristic of toxicity due to the presence of lead above the TCLP limit of 5.0 mg/L, it is regulated as hazardous waste. Generators are responsible for determining if their waste is hazardous. This determination can be made through process knowledge or laboratory analysis. Once a waste is identified as hazardous, the generator must comply with specific requirements regarding storage, labeling, manifesting, transportation, and disposal, all aimed at protecting human health and the environment. The cradle-to-grave management system ensures that hazardous waste is tracked throughout its lifecycle.

The Indiana Department of Environmental Management (IDEM) oversees hazardous waste management under the Resource Conservation and Recovery Act (RCRA) as implemented in Indiana. A key aspect of this is the identification and management of hazardous waste. The definition of hazardous waste is crucial and is primarily found in 329 Indiana Administrative Code (IAC) 3.1-1-4 and 3.1-6. These regulations define hazardous waste based on characteristics (ignitability, corrosivity, reactivity, toxicity) or if it is a listed hazardous waste. For waste to be considered hazardous due to toxicity, it must exhibit one of the four characteristics. The Toxicity Characteristic Leaching Procedure (TCLP) is the standard test used to determine if a waste exhibits the toxicity characteristic. If the TCLP extract from a solid waste contains any of the contaminants listed in 329 IAC 3.1-6-2 at or above the specified regulatory levels, the waste is deemed a toxic hazardous waste. For example, if a waste, when subjected to the TCLP, yields an extract with a concentration of lead greater than 5.0 mg/L, it would be classified as a D008 hazardous waste. This classification mandates specific management requirements for generators, transporters, and treatment, storage, and disposal facilities. The regulatory framework is designed to prevent the improper disposal of wastes that could pose a substantial threat to human health and the environment.

The Indiana Department of Environmental Management (IDEM) implements the Resource Conservation and Recovery Act (RCRA) within the state. Under RCRA, generators of hazardous waste are classified based on the quantity of hazardous waste produced per month. Very Small Quantity Generators (VSQGs) produce \( \leq 100 \) kilograms (kg) of hazardous waste per month and \( \leq 1 \) kilogram (kg) of acutely hazardous waste per month. Small Quantity Generators (SQGs) produce \( > 100 \) kg but \( < 1000 \) kg of hazardous waste per month. Large Quantity Generators (LQGs) produce \( \geq 1000 \) kg of hazardous waste per month. The question asks to identify the generator status for a facility that consistently produces 150 kg of hazardous waste and 0.5 kg of acutely hazardous waste per month. This scenario clearly falls within the definition of a Small Quantity Generator, as the total hazardous waste generation (150 kg) exceeds the VSQG threshold of 100 kg, but is less than the LQG threshold of 1000 kg. The amount of acutely hazardous waste (0.5 kg) is also below the VSQG threshold for acutely hazardous waste (1 kg), further confirming that the primary classification is based on the total hazardous waste quantity. Understanding these quantity-based thresholds is fundamental to determining applicable management standards and compliance obligations under Indiana's hazardous waste program, which aligns with federal RCRA regulations.

The Indiana Administrative Code (IAC) 329 governs hazardous waste management. Specifically, IAC 329 Article 3 addresses hazardous waste management standards. Within this article, requirements for the management of hazardous waste are detailed, including generator requirements. A key aspect of generator requirements in Indiana, mirroring federal regulations under the Resource Conservation and Recovery Act (RCRA), involves the proper identification and management of hazardous waste. When a generator discovers that they have accumulated hazardous waste in quantities exceeding the limits for their generator status, or if they have managed waste in a manner that indicates a deviation from regulatory compliance, they must take corrective actions. These corrective actions are designed to bring the facility back into compliance and to mitigate any potential environmental harm. Such actions often involve reclassifying the waste if it was misidentified, ensuring proper storage conditions are met, and potentially notifying the Indiana Department of Environmental Management (IDEM) of the situation and the corrective steps being taken. The scenario describes a situation where a facility, identified as a conditionally exempt small quantity generator (CESQG) in Indiana, discovers they have accumulated 150 kilograms of hazardous waste, which exceeds the CESQG limit of 100 kilograms per month. This discovery necessitates a change in their regulatory status and requires immediate action to manage the excess waste in accordance with Indiana’s hazardous waste regulations for a small quantity generator (SQG). The SQG status in Indiana allows for accumulation of up to 1,000 kilograms of hazardous waste. Therefore, the facility must manage the excess 50 kilograms (150 kg total – 100 kg CESQG limit) and the entire 150 kilograms in a manner compliant with SQG requirements, which includes proper labeling, storage for no more than 180 days (or 270 days if transportation is over 200 miles), and manifesting for off-site disposal at a permitted treatment, storage, or disposal facility (TSDF). The most immediate and critical action is to manage the accumulated waste in compliance with the SQG accumulation time limits and manifest requirements.

The Indiana Department of Environmental Management (IDEM) has specific regulations concerning the management of hazardous waste, particularly when it comes to identifying and managing wastes that exhibit the characteristic of corrosivity. A waste is considered corrosive if it is aqueous and has a pH less than or equal to 2 or greater than or equal to 12.5, or if it is a liquid that corrodes steel (SAE 1020) at a rate greater than 6.35 mm per year at a test temperature of 55 degrees Celsius. The scenario involves a facility generating a waste stream. To determine if this waste stream is hazardous due to corrosivity, one must compare its pH to the regulatory thresholds. If the pH is found to be 1.8, this value is less than or equal to 2.0. Therefore, the waste exhibits the characteristic of corrosivity as defined by Indiana Administrative Code (IAC) 329, Article 1. The applicable regulation for determining if a solid waste is hazardous is found within 329 IAC 3.1-3-4, which details the characteristics of hazardous waste. Specifically, 329 IAC 3.1-3-4(a) defines the characteristic of corrosivity. Since the waste has a pH of 1.8, it meets the criteria for a corrosive hazardous waste. This classification mandates specific management and disposal requirements under Indiana’s hazardous waste program, which is largely based on the federal Resource Conservation and Recovery Act (RCRA) framework. The facility must then comply with all applicable manifest, storage, treatment, and disposal regulations for corrosive hazardous waste, including proper labeling and container management.

Indiana law, specifically the Indiana Environmental Management Act (IEMA) and its associated rules, governs the management of hazardous waste. A key aspect of this regulation is the identification and management of acutely hazardous wastes, which are subject to more stringent controls due to their high toxicity or reactivity. These wastes are often listed under specific categories within the Indiana Administrative Code (IAC). When a facility generates waste that exhibits characteristics of hazardous waste, or is listed as hazardous, it must comply with the generator requirements. The threshold for being classified as a large quantity generator (LQG) in Indiana is the generation of 1,000 kilograms or more of hazardous waste per month, or more than 1 kilogram of acutely hazardous waste per month. Acutely hazardous wastes are specifically identified in Indiana regulations, often mirroring federal listings. The question focuses on the critical distinction between general hazardous waste generation thresholds and the lower threshold for acutely hazardous wastes, emphasizing the heightened regulatory scrutiny applied to the latter due to their inherent dangers. Understanding these specific thresholds is crucial for proper waste characterization and compliance with Indiana’s hazardous waste management program, which aims to protect public health and the environment from the risks associated with these materials.

The Indiana Administrative Code (IAC) 329 IAC 3.1-1-15 defines “mixture” in the context of hazardous waste. A mixture is a combination of a solid waste with one or more hazardous wastes. If a solid waste is mixed with a listed hazardous waste, the entire mixture becomes a hazardous waste unless it meets specific exclusion criteria. The key concept here is that the hazardous characteristics of the listed waste are imparted to the entire mixture. Indiana’s regulations are largely based on the federal Resource Conservation and Recovery Act (RCRA) framework. Specifically, if a solid waste is mixed with a listed hazardous waste, the resulting mixture is generally considered hazardous. The generator has the responsibility to determine if their waste is hazardous. If a solid waste is mixed with a hazardous waste, it is presumed to be hazardous unless the generator can demonstrate that the mixture no longer exhibits any characteristics of hazardous waste and that the listed hazardous waste component has been removed or treated to remove its hazardous characteristics, which is a complex process often requiring specific treatment standards. However, the general rule is that mixing a solid waste with a listed hazardous waste renders the entire mixture a hazardous waste.

Indiana’s hazardous waste management program is primarily governed by the Indiana Department of Environmental Management (IDEM) under the authority of the Indiana Code, specifically IC 13-22-1, which mirrors many provisions of the federal Resource Conservation and Recovery Act (RCRA). A key aspect of this program is the identification and management of hazardous waste. Generators of hazardous waste are classified based on the quantity of hazardous waste they produce per month. These classifications, such as large quantity generators (LQGs), small quantity generators (SQGs), and conditionally exempt small quantity generators (CESQGs), dictate the specific regulatory requirements they must adhere to. These requirements encompass aspects like waste determination, manifesting, storage, record-keeping, and reporting. For instance, LQGs have the most stringent requirements, including stricter accumulation time limits and personnel training. SQGs have less stringent requirements but still must comply with manifest requirements and certain storage limitations. CESQGs, producing the smallest amounts of hazardous waste, have the least burdensome requirements, often being exempt from many RCRA Subtitle C regulations provided they meet specific criteria, such as not exceeding a certain monthly generation rate and ensuring their waste is managed at a permitted facility. The distinction between these generator categories is crucial for ensuring that hazardous waste is managed appropriately throughout its lifecycle, from generation to final disposal, thereby protecting human health and the environment in Indiana. The regulatory framework aims to progressively increase the stringency of controls as the volume of hazardous waste generated increases.

The Indiana Department of Environmental Management (IDEM) enforces hazardous waste regulations under the authority of the Resource Conservation and Recovery Act (RCRA) and its state-specific implementing regulations. A key aspect of these regulations is the management of hazardous waste generators. Generators are categorized based on the quantity of hazardous waste they produce per month. A Very Small Quantity Generator (VSQG) generates 100 kilograms (kg) or less of hazardous waste per month, or 1 kilogram (kg) or less of acute hazardous waste per month. A Small Quantity Generator (SQG) generates between 100 kg and 1,000 kg of hazardous waste per month. A Large Quantity Generator (LQG) generates 1,000 kg or more of hazardous waste per month. The question describes a facility that generates 850 kg of hazardous waste in one month and 1,100 kg in the subsequent month. To determine the generator status, the highest monthly generation rate over a 12-month period is used. In this scenario, the facility exceeded the 1,000 kg threshold in the second month. Therefore, for the purpose of determining its generator status, the facility is classified as a Large Quantity Generator for that period, and subsequent months until it can demonstrate a consistent reduction below the LQG threshold for 12 consecutive months. This classification dictates specific requirements for storage, record-keeping, emergency preparedness, and personnel training.

Indiana’s Hazardous Waste Management Act, particularly under 329 IAC 3.1, outlines specific requirements for generators of hazardous waste. A key aspect is the determination of generator status, which dictates the regulatory obligations. Small Quantity Generators (SQGs) are defined by the amount of hazardous waste they generate per month. Specifically, an SQG is a generator who generates between 100 and 1,000 kilograms (kg) of hazardous waste in a calendar month. This threshold is critical for determining applicable storage limits, personnel training requirements, and emergency preparedness plans. For instance, an SQG can accumulate up to 6,000 kg of hazardous waste on-site for no more than 180 days. If they generate less than 100 kg per month, they are considered a Conditionally Exempt Small Quantity Generator (CESQG), with significantly fewer regulatory burdens. Conversely, facilities generating 1,000 kg or more per month are classified as Large Quantity Generators (LQGs), facing the most stringent requirements. The scenario presented involves a facility that consistently produces 750 kg of hazardous waste per month. This quantity falls squarely within the 100 to 1,000 kg range, classifying the facility as a Small Quantity Generator under Indiana’s regulations. Therefore, the applicable regulatory framework and associated responsibilities are those designated for SQGs.

Indiana’s hazardous waste management program, primarily governed by the Indiana Department of Environmental Management (IDEM) under the authority of the Indiana Environmental Management Act and its administrative rules, aligns with the federal Resource Conservation and Recovery Act (RCRA). A key aspect of this program involves the identification and management of hazardous wastes. Waste is classified as hazardous if it is specifically listed by the EPA or IDEM, or if it exhibits one or more hazardous characteristics: ignitability, corrosivity, reactivity, or toxicity. The toxicity characteristic is determined through the Toxicity Characteristic Leaching Procedure (TCLP). If a waste fails TCLP for any of the regulated constituents, it is considered hazardous. For example, if a waste sample, when subjected to TCLP, yields a leachate concentration of lead exceeding the regulatory limit of 5.0 mg/L, that waste would be classified as toxic hazardous waste. The generator of the waste is responsible for making this determination. This classification dictates subsequent management requirements, including storage, transportation, treatment, and disposal. Generators are categorized based on the quantity of hazardous waste produced monthly: large quantity generators (LQGs), small quantity generators (SQGs), and conditionally exempt small quantity generators (CESQGs). Each category has different regulatory obligations regarding record-keeping, personnel training, contingency planning, and reporting. For instance, LQGs must comply with more stringent requirements than SQGs. The cradle-to-grave management system ensures that hazardous waste is tracked from its generation to its final disposal.

The Indiana Administrative Code (IAC) 329 governs hazardous waste management. Specifically, IAC 329 Article 3 establishes standards for hazardous waste generators. A key aspect of generator status is the accumulation of hazardous waste on-site. Small Quantity Generators (SQGs) are permitted to accumulate up to 1,000 kilograms (2,200 pounds) of hazardous waste at any time. They are also allowed to accumulate up to 1 kilogram (2.2 pounds) of acutely hazardous waste. The accumulation period for SQGs is generally 180 days, but this can be extended to 270 days if the waste must be transported over 200 miles. The question focuses on the maximum quantity of non-acutely hazardous waste an SQG can accumulate on-site before triggering a higher generator status or violating regulations. The calculation involves understanding the weight limit for non-acutely hazardous waste. Since 1,000 kilograms is the limit, and the question asks for the maximum in pounds, the conversion is 1,000 kg * 2.20462 lbs/kg = 2,204.62 lbs. Therefore, an SQG can accumulate up to 2,200 pounds of non-acutely hazardous waste. The explanation should detail the regulatory basis for this limit under Indiana law, emphasizing the distinction between SQGs and other generator categories, and the specific quantity thresholds. It should also mention the importance of proper labeling, container management, and emergency preparedness for SQGs, as these are integral to maintaining their status and compliance. The regulations in IAC 329 Article 3 are designed to ensure that smaller quantities of hazardous waste are managed with less stringent requirements than large quantities, but still with adequate environmental protection. The accumulation limits are a critical component of this tiered system.

The Indiana Department of Environmental Management (IDEM) regulates hazardous waste management under the authority of the Resource Conservation and Recovery Act (RCRA) and its state-specific implementing regulations found in the Indiana Administrative Code (IAC) Title 329. Specifically, IAC 329 Article 3 outlines the requirements for hazardous waste management. When a facility generates hazardous waste, it must determine if it qualifies as a small quantity generator (SQG) or a large quantity generator (LQG) based on its monthly generation rates. These categories dictate the specific management standards, including storage time limits, personnel training, and contingency planning. A generator is classified as an SQG if it generates more than 100 kilograms but less than 1,000 kilograms of hazardous waste per month, or more than 1 kilogram of acute hazardous waste per month. An LQG generates 1,000 kilograms or more of hazardous waste per month, or more than 1 kilogram of acute hazardous waste per month. If a facility’s generation rate fluctuates, its classification is based on its highest rate in a calendar month. A facility that generates hazardous waste at a rate exceeding the SQG limits but below the LQG limits for a single month, and then subsequently exceeds the LQG limits in a subsequent month, would be subject to LQG requirements from the point it exceeds the LQG threshold. This transition requires immediate adherence to LQG standards, including manifest requirements, personnel training, and emergency preparedness. The question posits a scenario where a facility transitions from a consistent SQG status to exceeding LQG thresholds. The critical factor is the point at which the LQG threshold is breached. Once that threshold is crossed, the facility must immediately comply with LQG regulations. The specific regulation that addresses this transition is found within the generator status determination rules, which mandate that a generator’s status is determined by its highest generation rate in any given calendar month. Therefore, the moment the generation rate exceeds 1,000 kilograms of non-acute hazardous waste, the facility becomes an LQG and must comply with all applicable LQG requirements, including the manifest system for all subsequent shipments of hazardous waste.

The Indiana Department of Environmental Management (IDEM) oversees hazardous waste management under the authority of the Resource Conservation and Recovery Act (RCRA) and its state-specific implementations. A critical aspect of this regulation involves the management of hazardous waste generated by small quantity generators (SQGs). Under Indiana regulations, an SQG is defined as a generator who meets specific criteria regarding the amount of hazardous waste produced per month. Specifically, an SQG is a generator who produces more than 100 kilograms but less than 1,000 kilograms of hazardous waste in a calendar month, or generates less than 1 kilogram of acutely hazardous waste per month, or generates less than 100 kilograms of acute hazardous waste residue per month. Generators who produce 1,000 kilograms or more of hazardous waste in a calendar month are classified as large quantity generators (LQGs). Generators who produce 100 kilograms or less of hazardous waste in a calendar month are classified as conditionally exempt small quantity generators (CESQGs). The classification of a generator dictates the specific management, storage, and reporting requirements they must adhere to. For instance, SQGs have less stringent requirements than LQGs but more stringent requirements than CESQGs. Understanding these thresholds is fundamental for compliance with Indiana’s hazardous waste program, ensuring proper environmental protection and public health.