The New Hampshire Hazardous Waste Management Act, RSA 147-A, and its associated administrative rules, Env-WMA, establish the framework for hazardous waste management within the state. A key aspect of this framework is the generator’s responsibility for identifying and managing hazardous waste. When a solid waste exhibits a characteristic of hazardous waste, it must be managed as such. For a waste to be considered hazardous due to ignitability, it must have a flash point less than \(60^\circ C\) (\(140^\circ F\)), or be a non-liquid solid capable of causing fire through friction, absorption of moisture, or spontaneous chemical changes and, when ignited, burns so vigorously and persistently as to present a hazard. Corrosivity is determined by a pH of less than or equal to 2 or greater than or equal to 12.5, or by its ability to corrode steel at a specified rate. Reactivity pertains to wastes that are unstable under normal conditions, can form explosive mixtures with water, or are capable of detonation or explosive reaction when heated or subjected to shock. Toxicity is determined through the Toxicity Characteristic Leaching Procedure (TCLP), where if the extract from a representative sample of the waste contains a contaminant at a concentration equal to or greater than the regulatory level established in Env-WMA-C, it is considered toxic. In this scenario, the waste from the manufacturing process, exhibiting a flash point of \(55^\circ C\), directly meets the definition of ignitability under New Hampshire’s hazardous waste regulations, requiring its classification and management as hazardous waste.

New Hampshire’s hazardous waste regulations, specifically under RSA 147-A and its corresponding administrative rules (Env-Hw 100 et seq.), establish stringent requirements for the management of hazardous waste. A key aspect of these regulations pertains to the identification and classification of hazardous waste. The state generally adopts the federal Resource Conservation and Recovery Act (RCRA) definitions, but can also include state-specific criteria. When a generator produces a waste stream, they are responsible for determining if it is hazardous. This determination involves checking if the waste is specifically listed as hazardous by the U.S. Environmental Protection Agency (EPA) or if it exhibits hazardous characteristics: 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 specified contaminants above regulatory thresholds, it is classified as hazardous. In New Hampshire, generators must maintain records of their waste determinations, including any analytical test results. The state’s regulatory framework emphasizes cradle-to-grave management, meaning that once a material is determined to be hazardous waste, it is subject to strict tracking, storage, treatment, and disposal requirements. The generator’s responsibility extends to ensuring that any off-site disposal facility is permitted to accept the specific type of hazardous waste. Failure to properly classify and manage hazardous waste can result in significant penalties.

The New Hampshire Hazardous Waste Management Act, specifically RSA 147-A, and its accompanying administrative rules, Env-Hw 100 et seq., establish the framework for managing hazardous waste within the state. A critical aspect of this framework is the definition and classification of hazardous waste, which dictates the regulatory requirements for generation, storage, treatment, and disposal. New Hampshire adopts by reference many of the federal definitions and criteria established under the Resource Conservation and Recovery Act (RCRA). However, the state may also have specific criteria or thresholds that differ from federal regulations. For a waste to be classified as hazardous in New Hampshire, it must meet the criteria for either a listed hazardous waste or a characteristic hazardous waste. Characteristic hazardous wastes are those that exhibit one or more of the following properties: ignitability, corrosivity, reactivity, or toxicity. 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 contains any of the specified contaminants at or above their regulatory levels, the waste is considered toxic and therefore hazardous. The specific contaminants and their regulatory levels are detailed in the New Hampshire Code of Administrative Rules, Env-Hw 100 et seq., which aligns with federal RCRA regulations. For example, if a waste exhibits a pH of less than or equal to 2, it is considered corrosive. If it has a flash point less than 60 degrees Celsius (140 degrees Fahrenheit), it is ignitable. Reactivity involves instability, potential for violent chemical change, or generation of toxic gases. Toxicity is determined by the TCLP for specific constituents. Therefore, a waste is classified as hazardous if it exhibits any of these characteristics or is specifically listed by the state or federal government as hazardous.

The New Hampshire Hazardous Waste Rules, specifically Env-Hw 400, address generator status and the management of hazardous waste. A conditionally exempt small quantity generator (CESQG) in New Hampshire, as defined by Env-Hw 401.02(a), is a generator who meets specific criteria. These criteria include generating no more than 100 kilograms (approximately 220 pounds) of hazardous waste per month, and generating no more than 1 kilogram (approximately 2.2 pounds) of acute hazardous waste per month. Additionally, a CESQG must not accumulate more than 1,000 kilograms (approximately 2,200 pounds) of hazardous waste at any time. The question posits a scenario where a facility in New Hampshire generates 120 kilograms of hazardous waste in a single month and 0.5 kilograms of acute hazardous waste in the same month. Since the facility exceeds the 100-kilogram monthly generation limit for non-acute hazardous waste, it does not qualify as a CESQG for that month. Therefore, it must comply with the requirements for a small quantity generator or a large quantity generator, depending on its total accumulation and other factors not specified in the question, but it certainly loses its CESQG status due to exceeding the 100 kg threshold. The correct determination is that the facility is not a CESQG.

The New Hampshire Hazardous Waste Management Act, specifically RSA 147-A, and its accompanying administrative rules, Env-Hw 100 et seq., outline the requirements for managing hazardous waste. A key aspect of this legislation is the generator’s responsibility to properly identify and classify their waste. This includes determining if a waste exhibits any of the characteristics of hazardous waste as defined by the New Hampshire Department of Environmental Services (NHDES). These characteristics are ignitability, corrosivity, reactivity, and toxicity. For a waste to be considered toxic, it must leach hazardous constituents above regulatory thresholds when subjected to the Toxicity Characteristic Leaching Procedure (TCLP). If a waste exhibits any of these characteristics, it is regulated as hazardous waste, irrespective of whether it is specifically listed as a hazardous waste by NHDES. Therefore, the presence of dichlorobenzene, which is a listed constituent in the toxicity characteristic, would necessitate its management as hazardous waste if it leaches above the regulatory limit during a TCLP test, even if the waste stream itself is not explicitly named in the listed wastes. The generator’s duty is to perform the necessary testing or use knowledge of the process to make this determination.

New Hampshire’s hazardous waste regulations, primarily found within the state’s environmental protection statutes and administrative rules, establish specific requirements for the management of hazardous waste. One critical aspect is the generator’s responsibility to accurately identify and classify their waste streams. This classification dictates the subsequent management standards, including storage, transportation, and disposal. Under RSA 147-A and the associated administrative rules (e.g., Env-Hw 100 et seq.), a generator must determine if a solid waste exhibits any of the characteristics of hazardous waste, as defined by the state, or if it is a listed hazardous waste. The characteristic wastes include ignitability, corrosivity, reactivity, and toxicity. If a waste meets any of these criteria, it is considered hazardous. The process involves either laboratory analysis to determine if the waste exhibits these characteristics or knowledge of the process that generated the waste. For instance, if a process uses a solvent known to be ignitable, the waste containing that solvent would likely be classified as ignitable hazardous waste unless proven otherwise. Furthermore, the regulations outline specific quantity thresholds that define generator status (e.g., small quantity generator, large quantity generator), each with varying compliance obligations. Proper waste characterization is foundational to ensuring compliance and protecting public health and the environment in New Hampshire.

The New Hampshire Hazardous Waste Rules, specifically Env-Hw 100 et seq., outline the requirements for managing hazardous waste. When a generator determines that a waste exhibits a characteristic of hazardous waste, they must assign a hazardous waste number. For ignitability, this is D001; for corrosivity, D002; for reactivity, D003; and for toxicity, D004 through D043, based on the Toxicity Characteristic Leaching Procedure (TCLP). If a waste is listed as hazardous by the U.S. Environmental Protection Agency (EPA) or the state of New Hampshire, it receives a specific alphanumeric code, such as F, K, P, or U lists. A waste can be both characteristic and listed. In this scenario, the waste exhibits ignitability (D001) and is also a spent solvent from a non-specific source, fitting the F003 listing. Therefore, the most accurate and comprehensive hazardous waste number designation would include both the characteristic and the applicable listed waste code. The question asks for the designation when a waste is both characteristic and listed. The correct approach is to include all applicable codes.

New Hampshire’s hazardous waste regulations, particularly those found in the New Hampshire Code of Administrative Rules (NH Admin. Rules) Chapter Env-Hw 100 et seq., establish specific requirements for generators of hazardous waste. A key aspect of these regulations is the determination of generator status, which dictates the management and reporting obligations. The criteria for classifying a generator are primarily based on the quantity of hazardous waste produced per calendar month. A Very Small Quantity Generator (VSQG) is defined as a facility that produces 100 kilograms or less of hazardous waste per month, or 1 kilogram or less of acute hazardous waste per month. A Small Quantity Generator (SQG) is defined as a facility that produces more than 100 kilograms but less than 1,000 kilograms of hazardous waste per month, and does not generate more than 1 kilogram of acute hazardous waste per month. A Large Quantity Generator (LQG) is a facility that generates 1,000 kilograms or more of hazardous waste per month, or more than 1 kilogram of acute hazardous waste per month. The question scenario involves a facility that produces 150 kilograms of non-acute hazardous waste and 0.5 kilograms of acute hazardous waste in a calendar month. To determine the generator status, each waste stream must be evaluated against the respective thresholds. The non-acute hazardous waste production of 150 kg/month exceeds the VSQG threshold of 100 kg/month but is below the SQG threshold of 1,000 kg/month. Therefore, for the non-acute waste, the facility would be classified as an SQG. The acute hazardous waste production of 0.5 kg/month is below the SQG threshold of 1 kg/month for acute hazardous waste. When a facility generates both non-acute and acute hazardous waste, the generator status is determined by the category that imposes the most stringent requirements. In this case, the 150 kg of non-acute hazardous waste places the facility into the Small Quantity Generator category. The acute hazardous waste quantity does not elevate the status beyond SQG because it remains below the acute hazardous waste threshold for LQG status. Therefore, the facility is classified as a Small Quantity Generator.

New Hampshire’s hazardous waste regulations, particularly those aligned with the Resource Conservation and Recovery Act (RCRA) as implemented by the New Hampshire Department of Environmental Services (NHDES), establish specific requirements for generators of hazardous waste. The generator status is determined by the quantity of hazardous waste produced per month. A very small quantity generator (VSQG) is defined as a generator who generates less than 100 kilograms (approximately 220 pounds) of hazardous waste per calendar month. VSQGs have reduced regulatory burdens compared to small quantity generators (SQGs) and large quantity generators (LQGs). For instance, VSQGs are not subject to the same stringent accumulation time limits or manifest requirements that apply to SQGs and LQGs. They are also permitted to accumulate up to 1,000 kilograms of hazardous waste on-site for any length of time without obtaining a hazardous waste permit, provided they meet certain conditions, including proper identification of the waste and ensuring it is managed in a way that prevents releases to the environment. This classification is crucial for compliance and for understanding the scope of applicable regulations under New Hampshire law. The threshold of 100 kilograms per month is a fundamental differentiator for generator status.

The New Hampshire Hazardous Waste Rules, specifically under Env-Hw 400 series, detail the requirements for hazardous waste generators. For a small quantity generator (SQG), the threshold for accumulation of hazardous waste on-site is 6,000 kilograms (approximately 13,200 pounds) of non-acute hazardous waste. Additionally, an SQG can accumulate up to 1 kilogram (approximately 2.2 pounds) of acute hazardous waste. The accumulation time limit for SQGs is 180 days, or 270 days if the waste must be transported over 200 miles. During this accumulation period, the generator must maintain proper labeling, container management, and emergency preparedness. The scenario describes a facility that has accumulated 5,500 kilograms of spent solvents, which are classified as non-acute hazardous waste. This quantity is below the 6,000-kilogram limit for SQGs. The facility also has 0.8 kilograms of a discarded pesticide, which is considered acute hazardous waste. This quantity is below the 1-kilogram limit for acute hazardous waste for SQGs. Therefore, the facility remains classified as a small quantity generator based on these accumulation figures, provided other criteria for generator status are met. The key is to compare the accumulated quantities against the specific thresholds defined for SQGs in New Hampshire’s regulations.

New Hampshire’s hazardous waste regulations, particularly those found in the New Hampshire Code of Administrative Rules (NH Admin. Rules) Env-Hw 100 et seq., establish specific requirements for the management of hazardous waste. When a generator of hazardous waste ceases to operate, the regulations mandate a process for the closure of their hazardous waste management units. This process involves not only the proper disposal of any remaining hazardous waste in accordance with federal and state requirements, but also the decontamination and closure of any storage or treatment areas. The goal is to prevent future releases and protect human health and the environment. Specifically, the regulations require that all hazardous waste be removed from the site and managed at a permitted treatment, storage, and disposal facility (TSDF). Furthermore, any containers, tanks, or other units that held hazardous waste must be either decontaminated to meet specific standards or managed as hazardous waste themselves if decontamination is not feasible or complete. The closure plan must be submitted to and approved by the New Hampshire Department of Environmental Services (NHDES) before the closure activities commence. This ensures that the closure is conducted in a manner that mitigates any ongoing or potential environmental risks associated with the former operations. The emphasis is on ensuring that the site is no longer a source of hazardous waste management and poses no threat to the environment or public health.

The New Hampshire Hazardous Waste Rules, specifically Env-W 100 et seq., govern the management of hazardous waste within the state. A critical aspect of these regulations pertains to the identification and management of hazardous waste. For a solid waste to be classified as hazardous, it must meet certain criteria outlined in the rules. These criteria typically involve exhibiting one or more hazardous characteristics (ignitability, corrosivity, reactivity, toxicity) or being listed as a hazardous waste by the U.S. Environmental Protection Agency (EPA) or the state. The question focuses on the process of determining if a waste generated by a facility in New Hampshire is indeed hazardous under these state regulations. The key is to understand the primary mechanisms for hazardous waste identification as defined by the New Hampshire Department of Environmental Services (NHDES). This involves either characteristic hazardous waste determination or listing. A waste is considered hazardous if it is specifically listed by the EPA or the state, or if it exhibits one of the defined hazardous characteristics. The scenario describes a facility generating a waste stream that is not explicitly listed. Therefore, the determination of its hazardous nature hinges on whether it possesses any of the characteristic properties of hazardous waste as defined by the New Hampshire Hazardous Waste Rules. The absence of a specific listing means the focus shifts to characteristic determination.

New Hampshire’s hazardous waste regulations, particularly under RSA 147-A and its implementing rules (Env-Hw 100 et seq.), establish specific requirements for the management of hazardous waste. When a generator determines that a waste is hazardous, they must comply with all applicable generator status requirements, including accumulation time limits and proper labeling. For a conditionally exempt small quantity generator (CESQG) in New Hampshire, the accumulation limit is typically 180 days, or 270 days if the waste must be transported more than 200 miles. This generator status is determined by the amount of hazardous waste generated per month, which must be less than 100 kilograms (approximately 220 pounds) of hazardous waste, and less than 1 kilogram of acutely hazardous waste. The question posits a scenario where a facility has exceeded the monthly generation threshold for hazardous waste, thereby losing its CESQG status. Upon losing CESQG status, the facility immediately becomes subject to the requirements for a small quantity generator (SQG) or a large quantity generator (LQG), depending on the quantity of hazardous waste generated. An SQG is permitted to accumulate up to 6,000 kilograms of hazardous waste for up to 180 days. A LQG, however, generates 1,000 kilograms or more of hazardous waste per month or more than 1 kilogram of acutely hazardous waste per month and is subject to stricter accumulation limits, typically 90 days for most hazardous wastes. In this scenario, the facility’s waste generation increased to 150 kilograms in a single month. This amount exceeds the 100 kg threshold for CESQG status and also places it below the 1,000 kg threshold for LQG status, thus classifying it as an SQG. As an SQG, the facility can accumulate hazardous waste for up to 180 days. The waste was generated on January 15th. Therefore, the latest date the waste can remain on-site without violating accumulation time limits is 180 days from January 15th. Counting 180 days from January 15th: January has 31 days, so 31 – 15 = 16 days remaining in January. February has 28 days (assuming a non-leap year). March has 31 days. April has 30 days. May has 31 days. June has 30 days. Total days accounted for: 16 (Jan) + 28 (Feb) + 31 (Mar) + 30 (Apr) + 31 (May) + 30 (Jun) = 166 days. This leaves 180 – 166 = 14 days needed in July. Thus, the latest date is July 14th.

The New Hampshire Hazardous Waste Management Act, specifically RSA 147-B, and its accompanying administrative rules, Env-Hw 100 et seq., outline the framework for managing hazardous waste within the state. A critical aspect of this framework is the definition and regulation of hazardous waste generators. Generators are classified based on the quantity of hazardous waste they produce per month. These classifications dictate the specific regulatory requirements a facility must adhere to, including storage limits, manifest requirements, record-keeping, and personnel training. The classification system is designed to align with federal Resource Conservation and Recovery Act (RCRA) generator categories while also addressing New Hampshire’s specific environmental concerns and priorities. Understanding these classifications is paramount for any entity that generates, stores, treats, transports, or disposes of hazardous waste in New Hampshire to ensure compliance and protect public health and the environment. The threshold for being considered a large quantity generator is the generation of 1,000 kilograms or more of hazardous waste per month, or the accumulation of more than 1 kilogram of acute hazardous waste per month. This distinction is crucial as it triggers a more stringent set of regulatory obligations.

The New Hampshire Hazardous Waste Management Act, specifically RSA 147-A and its associated administrative rules, establishes a framework for the identification, management, and disposal of hazardous waste. A key aspect of this framework involves the responsibilities of generators. Generators are classified based on the quantity of hazardous waste they produce per month. This classification dictates the specific regulatory requirements they must adhere to, including storage limitations, record-keeping, and reporting. For instance, a large quantity generator (LQG) in New Hampshire, similar to federal definitions, is generally defined as a facility that generates 1,000 kilograms or more of hazardous waste per month, or more than 1 kilogram of acutely hazardous waste per month. These generators face the most stringent requirements under the Act, including manifest requirements for all off-site shipments, biennial reporting, and stringent storage time limits, typically 90 days without a permit. Small quantity generators (SQGs) and very small quantity generators (VSQGs) have less burdensome requirements, reflecting their lower potential impact. The question probes the understanding of the regulatory threshold that distinguishes a generator subject to the most comprehensive set of New Hampshire’s hazardous waste management regulations, focusing on the quantity of hazardous waste produced monthly.

The New Hampshire Hazardous Waste Rules, specifically under Env-W 100 series, define generator status based on the quantity of hazardous waste generated per calendar month. A large quantity generator (LQG) is defined as a generator who generates in a calendar month, or accumulates at any time, 1,000 kilograms (kg) or more of hazardous waste, or 1 kilogram (kg) or more of acute hazardous waste. A small quantity generator (SQG) is defined as a generator who generates in a calendar month, or accumulates at any time, more than 100 kilograms (kg) but less than 1,000 kilograms (kg) of hazardous waste, but not acutely hazardous waste. A conditionally exempt small quantity generator (CESQG) is defined as a generator who generates in a calendar month, a total of 100 kilograms (kg) or less of hazardous waste, and generates less than or equal to 1 kilogram (kg) of acute hazardous waste. In this scenario, the facility generates 150 kg of non-acute hazardous waste and 0.5 kg of acute hazardous waste per month. For non-acute hazardous waste, 150 kg falls between the 100 kg threshold for CESQG and the 1,000 kg threshold for LQG, placing it in the SQG category. For acute hazardous waste, 0.5 kg is less than the 1 kg threshold for LQG and SQG, but it is not less than or equal to 1 kg, which would place it in the CESQG category for acute waste. However, the rules state that if a generator exceeds the quantity limits for acute hazardous waste, they are considered an LQG, regardless of their non-acute waste generation. Since the facility generates 0.5 kg of acute hazardous waste, which is less than the 1 kg limit for acute hazardous waste, it does not automatically become an LQG based on acute waste. The key is that the 150 kg of non-acute hazardous waste, when considered alongside the 0.5 kg of acute hazardous waste, does not push the facility into the LQG category for non-acute waste (which requires 1,000 kg or more). The acute waste generation of 0.5 kg is below the 1 kg threshold for LQG status concerning acute waste. Therefore, the facility’s status is determined by the non-acute waste generation of 150 kg, which classifies it as a small quantity generator. The specific New Hampshire regulations that govern these classifications are found within the administrative rules, particularly Env-W 100 series, which align with the federal Resource Conservation and Recovery Act (RCRA) framework for hazardous waste management.

The New Hampshire Hazardous Waste Rules, specifically RSA 147-A and Env-Hw 100 et seq., establish a framework for the management of hazardous waste. A key aspect of this framework is the definition and regulation of hazardous waste generators. Under these regulations, a generator is classified based on the quantity of hazardous waste produced per month. A “conditionally exempt small quantity generator” (CESQG) is defined as a generator who produces no more than 100 kilograms (approximately 220 pounds) of hazardous waste per month, or no more than 1 kilogram (approximately 2.2 pounds) of acutely hazardous waste per month. This classification significantly impacts the regulatory requirements for storage, record-keeping, and disposal. For instance, CESQGs have less stringent requirements compared to small quantity generators or large quantity generators, often being allowed to dispose of their hazardous waste at authorized municipal solid waste facilities under certain conditions, provided the waste meets specific criteria and the facility is permitted to accept it. The classification is crucial for compliance and determining the appropriate management practices.

The New Hampshire Hazardous Waste Rules, specifically under RSA 147-A, establish a framework for managing hazardous waste within the state. A key aspect of this framework is the responsibility placed upon generators to accurately identify and classify their waste. For a generator to determine if a waste is hazardous, they must consult the definitions and criteria outlined in the regulations. This typically involves a two-tiered approach: first, checking if the waste is specifically listed as hazardous by the U.S. Environmental Protection Agency (EPA) or the state of New Hampshire. Second, if the waste is not listed, the generator must determine if it exhibits any of the hazardous characteristics: ignitability, corrosivity, reactivity, or toxicity. The toxicity characteristic is often evaluated through a specific testing methodology, the Toxicity Characteristic Leaching Procedure (TCLP), as defined in federal regulations (40 CFR Part 261, Subpart C). If the leachate from a waste sample, when tested using TCLP, contains any of the regulated contaminants at concentrations equal to or exceeding the specified regulatory levels, the waste is classified as hazardous due to toxicity. For instance, if a waste exhibits a pH less than or equal to 2.0, it would be classified as hazardous due to corrosivity, without the need for further characteristic testing or listing. Similarly, a waste that spontaneously ignites in air would be classified as ignitable. The regulations are designed to ensure that all hazardous wastes, regardless of their origin or exact composition, are managed to protect public health and the environment. Therefore, a generator must perform due diligence by reviewing waste streams against these criteria.

The New Hampshire Department of Environmental Services (NHDES) oversees hazardous waste management within the state. Under the New Hampshire Hazardous Waste Rules, specifically RSA 147-A, facilities that generate, store, treat, or dispose of hazardous waste are subject to specific requirements. When a facility ceases to operate and is no longer generating hazardous waste, it must properly close its hazardous waste management units. This closure process is governed by stringent regulations designed to protect human health and the environment from the potential release of hazardous substances. The regulations mandate a detailed closure plan, which must be submitted to and approved by NHDES. This plan outlines the procedures for decontaminating or removing all hazardous waste, equipment, and structures, as well as for addressing any contaminated soils or groundwater. Post-closure care is also a critical component, requiring monitoring and maintenance for a specified period to ensure the long-term integrity of the site and to detect any potential releases. The specific duration and requirements for post-closure care are determined by NHDES based on the nature of the waste managed and the risks associated with the site. Therefore, a facility that has ceased hazardous waste operations must still comply with closure and post-closure requirements as stipulated by New Hampshire law and NHDES regulations to ensure environmental protection.

The New Hampshire Hazardous Waste Rules, specifically under Env-Hw 100-900, outline the requirements for managing hazardous waste. When a generator of hazardous waste discovers that they have accumulated hazardous waste in quantities exceeding the limits for their generator status, or if they exceed the time limits for accumulation, they are generally considered to have exceeded their generator status. This triggers a requirement to manage the waste as if it were being shipped off-site for disposal. The regulations, such as those found in Env-Hw 401.05, address these situations. Specifically, if a large quantity generator (LQG) exceeds the 90-day accumulation limit at their site, they are no longer considered an LQG for that particular accumulation of waste and must comply with the requirements for treatment, storage, or disposal facilities (TSDFs), which includes manifesting the waste for off-site management. The core principle is that exceeding accumulation limits or quantities means the generator must immediately manage the waste according to off-site disposal requirements, including proper manifesting and transportation to a permitted facility. This is not a calculation but an interpretation of regulatory compliance based on exceeding defined thresholds.

The New Hampshire Hazardous Waste Rules, specifically under Env-Hw 400, address the management of hazardous waste. A key aspect is the definition of a generator and the associated requirements based on the quantity of hazardous waste produced per month. For a small quantity generator (SQG), the threshold is producing between 100 and 1,000 kilograms (kg) of hazardous waste per month. A very small quantity generator (VSQG) produces less than 100 kg of hazardous waste per month. A large quantity generator (LQG) produces 1,000 kg or more of hazardous waste per month. In this scenario, the facility, “Granite State Manufacturing,” generates 750 kg of hazardous waste in January and 1,100 kg in February. Since the generator status is determined by the *highest* amount generated in any calendar month, the facility’s status for the entire quarter would be based on the February generation. Therefore, generating 1,100 kg in February unequivocally classifies Granite State Manufacturing as a large quantity generator for that month and, consequently, for the period encompassing both months, triggering the most stringent regulatory requirements under New Hampshire’s hazardous waste program. This includes requirements for personnel training, contingency planning, emergency procedures, and reporting. The question tests the understanding of how generator status is determined when monthly generation rates fluctuate.

The New Hampshire Hazardous Waste Rules, specifically RSA 147-A and Env-Hw 100 et seq., establish a framework for managing hazardous waste. A key aspect of this framework is the generator’s responsibility for waste characterization. When a facility generates waste that is not explicitly listed as hazardous, it must still determine if the waste exhibits any hazardous characteristics. These characteristics are ignitability, corrosivity, reactivity, and toxicity. For toxicity, the primary regulatory tool in New Hampshire, mirroring federal RCRA, is the Toxicity Characteristic Leaching Procedure (TCLP). If a waste, when subjected to TCLP, leaches certain contaminants above specified regulatory thresholds, it is deemed a toxic hazardous waste. The question presents a scenario where a hypothetical industrial process in New Hampshire produces a waste stream. The facility has conducted a TCLP analysis, and the results for lead were found to be 5.8 mg/L. The regulatory limit for lead under the toxicity characteristic is 5.0 mg/L. Since the TCLP result of 5.8 mg/L exceeds the regulatory limit of 5.0 mg/L, the waste is classified as a toxic hazardous waste. Therefore, the generator must manage this waste in accordance with all applicable New Hampshire hazardous waste regulations, including manifesting, proper storage, and disposal at a permitted treatment, storage, and disposal facility. The calculation is a direct comparison: \(5.8 \text{ mg/L} > 5.0 \text{ mg/L}\). This comparison leads to the determination that the waste exhibits the toxicity characteristic.

The New Hampshire Hazardous Waste rules, specifically under the authority of the Department of Environmental Services (NHDES), define hazardous waste based on characteristics and listings. For characteristic wastes, a generator must determine if their waste exhibits any of the four characteristics: ignitability, corrosivity, reactivity, or toxicity. Toxicity is determined using the Toxicity Characteristic Leaching Procedure (TCLP) test, which simulates landfill conditions. If the leachate from a waste sample exceeds regulatory limits for specific contaminants, the waste is classified as toxic hazardous waste. In New Hampshire, the regulatory framework for hazardous waste management is primarily established by the New Hampshire Hazardous Waste Rules (Env-Hw 100 et seq.), which are promulgated under RSA 147-A. These rules are largely aligned with federal regulations under the Resource Conservation and Recovery Act (RCRA), but may contain state-specific provisions. For a waste to be considered hazardous by characteristic, it must meet the criteria for ignitability, corrosivity, reactivity, or toxicity as defined in these rules. The toxicity characteristic is particularly important as it involves specific testing protocols. The state of New Hampshire, through NHDES, enforces these regulations to protect public health and the environment from the dangers posed by hazardous waste. Generators are responsible for accurately classifying their waste streams, which may involve laboratory analysis.

New Hampshire, like other states, regulates hazardous waste management under both federal Resource Conservation and Recovery Act (RCRA) authority and its own state-specific statutes and rules, primarily found in the New Hampshire Department of Environmental Services (NHDES) regulations, often codified in the New Hampshire Code of Administrative Rules (NH Admin. Rules) Chapter Env-Wm. When a generator of hazardous waste, classified as a small quantity generator (SQG) under federal RCRA, exceeds the regulatory quantity limits for accumulation of hazardous waste on-site, they must comply with the accumulation time limits and manifest requirements. For SQGs, the federal accumulation limit is 180 days, with an extension to 270 days if the waste must be transported over 200 miles. New Hampshire’s regulations generally align with federal standards but may have specific nuances or interpretations. If an SQG accumulates hazardous waste for more than 180 days, they are considered to be operating a treatment, storage, or disposal facility (TSDF) and must obtain a permit or operate under interim status. The manifest system, governed by federal regulations (40 CFR Part 262) and mirrored in state rules, is a cradle-to-grave tracking document for hazardous waste shipments, ensuring accountability from generation to final disposal. Failure to use a manifest for shipments exceeding the threshold quantities, or accumulating waste beyond the allowed timeframes without proper authorization, constitutes a violation of hazardous waste regulations. The question tests the understanding of the transition from SQG status to a permitted status due to exceeding accumulation limits, and the associated regulatory requirements, specifically the manifest system.

The New Hampshire Hazardous Waste Rules, specifically RSA 147-F, govern the management of hazardous waste within the state. When a generator of hazardous waste ceases to operate or changes ownership, the responsibility for the proper management and closure of any remaining hazardous waste management units or accumulated waste must be clearly defined. RSA 147-F:10 outlines the responsibilities of hazardous waste generators, including the proper management of waste even after cessation of operations. The Department of Environmental Services (DES) is the regulatory body responsible for overseeing these matters. In situations where a facility ceases operations, the former owner or operator remains liable for any hazardous waste management obligations unless a legally binding agreement transfers this responsibility to a new owner or operator, and this transfer is approved by the DES. Simply abandoning the site or ceasing operations does not absolve the original generator of their legal duties under RSA 147-F. The primary goal is to ensure that all hazardous waste is managed in a manner that protects human health and the environment, and this responsibility persists until explicitly transferred and approved by the state. Therefore, the former owner retains the obligation to ensure proper closure and management of any hazardous waste left at the site.

New Hampshire, like other states, operates under the federal Resource Conservation and Recovery Act (RCRA) but also implements its own specific regulations. The definition of a hazardous waste generator is crucial for determining regulatory obligations. Under New Hampshire’s hazardous waste regulations, specifically referencing the New Hampshire Code of Administrative Rules, Chapter Env-Hw 100, a generator is classified based on the quantity of hazardous waste produced per calendar month. A Very Small Quantity Generator (VSQG) is defined as a generator who produces less than or equal to 100 kilograms (approximately 220 pounds) of hazardous waste per month, or less than or equal to 1 kilogram (approximately 2.2 pounds) of acutely hazardous waste per month, and does not accumulate more than 1,000 kilograms (approximately 2,200 pounds) of hazardous waste at any time. 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 scenario describes a facility that consistently generates 150 kilograms of hazardous waste per month. This quantity falls within the range for a Small Quantity Generator, as it is more than 100 kg but less than 1,000 kg. Therefore, the facility is classified as a Small Quantity Generator.

The New Hampshire Hazardous Waste Rules, specifically under Env-Hw 400 series, delineate requirements for the management of hazardous waste. When a generator produces hazardous waste, they must determine if it is a characteristic hazardous waste or a listed hazardous waste. If the waste exhibits any of the characteristics of ignitability, corrosivity, reactivity, or toxicity, it is considered a characteristic hazardous waste. The toxicity characteristic is determined through the Toxicity Characteristic Leaching Procedure (TCLP), as outlined in Env-Hw 401.04. If the leachate from a TCLP test for a specific constituent exceeds the regulatory threshold, the waste is classified as hazardous. For waste streams not exhibiting these characteristics, generators must consult the listed hazardous waste codes, which are derived from federal regulations (40 CFR Part 261, Subpart D) and adopted by New Hampshire. These lists include F, K, P, and U codes, representing wastes from non-specific sources, specific sources, and discarded commercial chemical products. A generator’s responsibility is to accurately identify and classify their waste, which dictates the subsequent management, storage, and disposal requirements under New Hampshire law. This classification is the foundational step in ensuring compliance with the state’s hazardous waste program, which aims to protect public health and the environment from the dangers posed by hazardous waste. The prompt describes a scenario where a facility in New Hampshire generates a waste stream that has been identified through laboratory analysis as exhibiting a characteristic of hazardous waste, specifically toxicity, as determined by a TCLP test. The critical element here is that the waste has already been identified as hazardous based on a characteristic. Therefore, the generator’s primary obligation is to manage it according to the hazardous waste regulations, which includes obtaining an EPA identification number if they are a large quantity generator or a small quantity generator that meets certain thresholds, and adhering to accumulation time limits and manifesting requirements for off-site transportation. The question focuses on the immediate next step after this determination.

The New Hampshire Hazardous Waste Rules, specifically under the New Hampshire Department of Environmental Services (NHDES) regulations, delineate specific requirements for the management and disposal of hazardous waste. When a generator of hazardous waste ceases to operate or transfers ownership, a crucial step involves the proper closure of their hazardous waste management units and the management of any remaining hazardous waste. The regulations require that any hazardous waste remaining on-site at the time of closure must be removed and managed at a permitted treatment, storage, and disposal facility (TSDF). This is to ensure that the waste is handled according to its hazard characteristics and does not pose an ongoing threat to human health or the environment. The generator’s responsibility continues even after closure activities begin. Therefore, the generator must ensure that all hazardous waste is properly manifested and transported to a licensed facility for final disposition, rather than abandoning it or attempting to dispose of it through non-permitted means. The concept of “cradle-to-grave” management, as established under federal RCRA and mirrored in state regulations, underscores this continuous liability and responsibility.

The New Hampshire Department of Environmental Services (NHDES) employs a tiered approach to regulating hazardous waste generators, primarily based on the quantity of hazardous waste produced per calendar month. This classification dictates the specific requirements for storage, record-keeping, reporting, and emergency preparedness. For a facility to be classified as a Very Small Quantity Generator (VSQG) in New Hampshire, it must generate no more than 100 kilograms (approximately 220 pounds) of hazardous waste per month. Additionally, VSQGs must not accumulate more than 1,000 kilograms (approximately 2,200 pounds) of hazardous waste on-site at any given time. They are also limited to generating no more than 1 kilogram of acute hazardous waste per month and no more than 100 kilograms of any residue or contaminated debris from the cleanup of spills of acute hazardous waste. These thresholds are critical for determining the regulatory burden and compliance obligations under New Hampshire’s hazardous waste management rules, which are largely aligned with federal Resource Conservation and Recovery Act (RCRA) regulations but may include state-specific nuances. Understanding these quantity-based distinctions is fundamental to proper hazardous waste management and avoiding non-compliance.

New Hampshire’s hazardous waste regulations, particularly those aligned with the Resource Conservation and Recovery Act (RCRA) as implemented by the New Hampshire Department of Environmental Services (NHDES), establish specific requirements for the management of hazardous waste. When a facility generates hazardous waste, it must determine if it qualifies as a large quantity generator (LQG), a small quantity generator (SQG), or a conditionally exempt small quantity generator (CESQG). This classification is primarily based on the amount of hazardous waste generated per calendar month. For LQGs, the threshold is generating 1,000 kilograms (kg) or more of hazardous waste in a month, or more than 1 kg of acutely hazardous waste. SQGs generate between 100 kg and 1,000 kg of hazardous waste per month. CESQGs generate 100 kg or less of hazardous waste per month and also generate 1 kg or less of acutely hazardous waste per month. These thresholds dictate the specific operational, record-keeping, and reporting requirements under New Hampshire law. For instance, LQGs face the most stringent requirements, including biennial reporting, personnel training, and contingency plans. SQGs have reduced requirements, and CESQGs have the fewest. The scenario describes a facility that produces 1,200 kg of hazardous waste in January and 950 kg in February. In January, the facility exceeds the 1,000 kg threshold for LQG status. In February, the facility falls below the 1,000 kg threshold but remains above the 100 kg threshold for SQG status. The generator status is determined on a monthly basis. Therefore, for January, the facility is an LQG. For February, it is an SQG. The question asks about the classification for the month of January.