Wisconsin Statute § 291.44 governs the management of hazardous waste. Specifically, it outlines the responsibilities of the Department of Natural Resources (DNR) in implementing federal Resource Conservation and Recovery Act (RCRA) regulations within the state. When a generator of hazardous waste discovers that they have significantly underestimated or miscalculated the quantity of hazardous waste they generated during a calendar month, and this recalculation pushes them into a higher generator category, a specific notification requirement is triggered. Under Wisconsin Administrative Code NR 662.013(1)(g), a generator who finds they have exceeded the monthly quantity limits for their current category must report this change to the department within 30 days of the date of discovery. This reporting ensures the DNR is aware of the increased hazardous waste management burden and can monitor compliance with the stricter requirements associated with the higher generator status. Failure to provide this notification can result in penalties. The discovery of exceeding the limit is the trigger for the 30-day notification period, not the end of the month in which the excess generation occurred.

The Wisconsin Department of Natural Resources (WDNR) employs specific criteria to classify hazardous waste. Under Wisconsin Administrative Code NR 600, a solid waste is considered hazardous if it exhibits one or more characteristics of hazardous waste or if it is listed as hazardous. The characteristic wastes are ignitability, corrosivity, reactivity, and toxicity. Toxicity is determined by the Toxicity Characteristic Leaching Procedure (TCLP) test, as outlined in NR 605.07. This test simulates the leaching that occurs when waste is disposed of in a landfill. If the leachate from a waste sample, when tested for specific contaminants, exceeds regulatory thresholds, the waste is classified as toxic. For example, if a waste exhibits a characteristic of ignitability, it is a hazardous waste. Similarly, if a waste contains any of the listed constituents in the toxicity characteristic at or above the specified regulatory levels, it is also a hazardous waste. The generator of the waste is responsible for determining if their waste is hazardous. This determination is crucial for proper management, storage, transportation, and disposal, ensuring compliance with Wisconsin’s stringent hazardous waste regulations, which are largely aligned with federal Resource Conservation and Recovery Act (RCRA) requirements but may have state-specific nuances. The focus is on the inherent properties of the waste that could pose a risk to human health or the environment.

The Wisconsin Hazardous Waste Management Program, primarily governed by Wisconsin Administrative Code Chapter NR 600 series, establishes requirements for the generation, transportation, treatment, storage, and disposal of hazardous waste. A key aspect of this program is the identification and management of hazardous waste. Wisconsin adopts by reference most of the federal Resource Conservation and Recovery Act (RCRA) regulations found in 40 CFR Parts 260-279, with specific state additions and modifications. For a generator to determine if a solid waste is a hazardous waste, they must first check if it is excluded by regulation. If not excluded, they must then determine if it is a listed hazardous waste (F, K, P, or U lists) or if it exhibits a characteristic of hazardous waste (ignitability, corrosivity, reactivity, or toxicity). The toxicity characteristic is determined by the Toxicity Characteristic Leaching Procedure (TCLP). If a waste fails TCLP for any of the specified constituents at or above the regulatory levels, it is a hazardous waste. Wisconsin Administrative Code NR 605.07 outlines the specific toxicity characteristic constituents and their regulatory levels. For example, the regulatory level for lead is 5.0 mg/L. If a waste, when subjected to the TCLP, leaches lead at a concentration of 6.5 mg/L, it exhibits the toxicity characteristic for lead and is therefore classified as a hazardous waste. This classification triggers a cascade of management requirements under NR 600 series regulations, including manifesting, record-keeping, and proper disposal at a permitted facility. The intent is to prevent the release of hazardous constituents into the environment.

The question concerns the applicability of Wisconsin’s hazardous waste regulations, specifically Chapter NR 600 series, to certain waste streams. Wisconsin Administrative Code NR 600.03(21) defines a hazardous waste generator as a person who generates hazardous waste in a quantity equal to or greater than the threshold amounts established in NR 600.03(21)(a) through (c). These thresholds are based on monthly generation rates: large quantity generators (LQGs) generate 1,000 kg or more of hazardous waste per month, or 1 kg or more of acute hazardous waste per month, or more than 100 kg of any spill cleanup material contaminated with acute hazardous waste per month. Small quantity generators (SQGs) generate between 100 kg and 1,000 kg of hazardous waste per month, or between 1 kg and 100 kg of acute hazardous waste per month. Conditionally exempt small quantity generators (CESQGs) generate 100 kg or less of hazardous waste per month, and less than 1 kg of acute hazardous waste per month. The scenario describes “Agri-Solutions Inc.” generating 850 kg of spent solvent (a listed hazardous waste under NR 600.10) and 5 kg of pesticide waste (also considered hazardous). The total monthly generation of hazardous waste is 850 kg + 5 kg = 855 kg. This amount exceeds the 100 kg threshold for SQGs and is less than the 1,000 kg threshold for LQGs. Therefore, Agri-Solutions Inc. is classified as a small quantity generator under Wisconsin hazardous waste regulations. This classification dictates specific management, reporting, and record-keeping requirements under NR 600 series. For instance, SQGs have less stringent requirements than LQGs but more than CESQGs, including limitations on accumulation time and quantity, and specific manifest and reporting obligations.

Wisconsin Administrative Code NR 605.06 outlines the requirements for hazardous waste generator status, including the calculation of monthly generator quantities. A large quantity generator (LQG) is defined as a generator who generates in a calendar month more than 1,000 kilograms (kg) of hazardous waste, or more than 1 kilogram (kg) of acute hazardous waste. A small quantity generator (SQG) is a generator who generates in a calendar month less than 1,000 kilograms of hazardous waste and less than 1 kilogram of acute hazardous waste. The scenario describes a facility generating 950 kg of non-acute hazardous waste and 0.5 kg of acute hazardous waste in May. To determine the generator status, we compare these amounts to the thresholds. Since 950 kg is less than 1,000 kg and 0.5 kg is less than 1 kg, the facility does not meet the criteria for LQG status. Furthermore, because the facility generates less than 1,000 kg of non-acute hazardous waste and less than 1 kg of acute hazardous waste, it falls into the category of a small quantity generator. Therefore, the facility is classified as a small quantity generator for the month of May. This classification dictates specific management, record-keeping, and reporting requirements under Wisconsin hazardous waste regulations, which are generally less stringent than those for large quantity generators.

The Wisconsin Department of Natural Resources (WDNR) oversees hazardous waste management under Chapter NR 600 series of the Wisconsin Administrative Code, which largely mirrors federal regulations under the Resource Conservation and Recovery Act (RCRA). Generators of hazardous waste are primarily responsible for determining if their waste is hazardous. This determination involves consulting listed hazardous wastes (F, K, P, U lists) and evaluating characteristic hazardous wastes (ignitability, corrosivity, reactivity, toxicity). If a waste is determined to be hazardous, the generator must comply with specific management standards based on their generator status (e.g., large quantity, small quantity, very small quantity). These standards include obtaining an EPA identification number, proper storage, labeling, manifesting for transportation, and record-keeping. The question asks about the specific documentation required for off-site shipment of hazardous waste within Wisconsin. Wisconsin, like other states implementing RCRA, requires the use of a uniform hazardous waste manifest for all off-site shipments. This manifest tracks the waste from its point of generation to its final disposal or treatment facility, ensuring accountability and proper management throughout the transportation process. The manifest serves as a legal document that accompanies the hazardous waste shipment and is signed by each party involved in the transfer of custody. It is crucial for demonstrating compliance with cradle-to-grave management requirements. Other documents like a waste profile sheet or a bill of lading might be used in conjunction, but the manifest is the legally mandated tracking document for hazardous waste shipments.

The scenario involves a generator of hazardous waste in Wisconsin that ships waste to a treatment, storage, and disposal facility (TSDF) in Illinois. Under the Resource Conservation and Recovery Act (RCRA) and Wisconsin’s hazardous waste regulations, a generator is responsible for their hazardous waste from “cradle to grave.” This responsibility includes ensuring the waste is properly managed and disposed of. When a generator uses a transporter and a TSDF, they must ensure these entities are permitted and properly handle the waste. The manifest system is a key component of this “cradle to grave” tracking. The generator must retain a copy of the manifest signed by the transporter and the designated TSDF. If the generator does not receive a signed copy of the manifest back from the TSDF within a specified timeframe (typically 30 days after the waste was accepted by the initial transporter), they are required to notify the state agency responsible for hazardous waste management. In Wisconsin, this is the Department of Natural Resources (DNR). This notification is crucial for tracking waste and identifying potential mismanagement. Therefore, the generator’s primary obligation in this situation is to notify the Wisconsin DNR of the unreturned manifest. The generator’s responsibility does not cease upon shipment; it continues until confirmation of proper receipt and management by the TSDF is received.

The Wisconsin Department of Natural Resources (WDNR) oversees hazardous waste management under Chapter NR 600 series of the Wisconsin Administrative Code, which largely aligns with federal Resource Conservation and Recovery Act (RCRA) regulations. A key aspect of these regulations involves the management of universal wastes, which are hazardous wastes that are widely generated and pose less of a threat when managed properly. Universal wastes, as defined by NR 600, include certain batteries, pesticides, mercury-containing equipment, and lamps. Generators of universal waste have specific management standards that are less stringent than those for other hazardous wastes. These standards aim to reduce the regulatory burden on businesses and institutions that generate these common hazardous materials. The management standards for universal waste generators in Wisconsin, under NR 666, specify requirements for labeling, storage, and shipment. For instance, a large quantity handler of universal waste lamps in Wisconsin must manage these wastes in a manner that prevents release to the environment and must ensure they are sent to a universal waste handler or destination facility. A generator who accumulates universal waste lamps for more than 35 days, but less than 180 days (or 270 days if shipping to a destination facility over 500 miles away), and has more than 1,000 kg of universal waste lamps on site at any time, is considered a large quantity handler of universal waste. However, the question asks about a generator who *ships* universal waste lamps to a recycling facility within Wisconsin. The critical element here is the time limit for accumulation before shipment. If the generator accumulates the lamps for 90 days and then ships them to a Wisconsin-based recycling facility, they are adhering to the accumulation time limits for universal waste, which typically allows for longer storage periods than for non-universal hazardous wastes. The specific duration of 90 days for accumulation before shipment, without exceeding other limits like the 1,000 kg threshold for large quantity handlers, is a permissible management practice under the universal waste regulations in Wisconsin. The shipment to a recycling facility within the state is also a standard practice for managing universal waste. Therefore, the action described is consistent with the regulations for managing universal waste lamps in Wisconsin.

The Wisconsin Administrative Code NR 605.07(1) details the requirements for hazardous waste generator status, specifically concerning the accumulation of hazardous waste. A small quantity generator (SQG) in Wisconsin is defined by the amount of hazardous waste they generate per month. An SQG is permitted to accumulate up to 1,000 kilograms (approximately 2,200 pounds) of hazardous waste on-site for any length of time, provided they meet other regulatory requirements such as proper labeling, containment, and personnel training. If an SQG exceeds this 1,000 kg threshold, or accumulates any amount of acute hazardous waste exceeding 1 kg, they must manage their waste as a large quantity generator (LQG) and comply with the more stringent requirements of that category. The scenario describes a facility generating 800 kg of hazardous waste in a month. This amount falls below the 1,000 kg limit for SQGs. Therefore, the facility’s generator status remains that of a small quantity generator, and they are not required to immediately notify the Wisconsin Department of Natural Resources (WDNR) as a large quantity generator based solely on this monthly generation rate. The question tests the understanding of the specific quantity thresholds that define generator status under Wisconsin’s hazardous waste regulations.

Wisconsin Administrative Code Chapter NR 660, which mirrors federal Resource Conservation and Recovery Act (RCRA) regulations, establishes requirements for hazardous waste management. Specifically, NR 662 addresses standards applicable to generators of hazardous waste. A key aspect is determining if a solid waste is a hazardous waste. This involves a two-step process: first, checking if the waste is specifically excluded from being a hazardous waste under NR 661.0003. If not excluded, the generator must then determine if it exhibits any of the hazardous characteristics (ignitability, corrosivity, reactivity, or toxicity) as defined in NR 661.020 through NR 661.024, or if it is a listed hazardous waste under NR 661.010 through NR 661.011. For wastes that are not listed, characteristic determination is crucial. The toxicity characteristic is determined by the Toxicity Characteristic Leaching Procedure (TCLP), outlined in NR 661.024, which simulates landfill conditions. If a waste fails the TCLP for any of the regulated constituents, it is classified as a hazardous waste. Therefore, a waste that is not specifically excluded and fails the TCLP for lead is considered a hazardous waste under Wisconsin law due to exhibiting the toxicity characteristic.

Wisconsin’s hazardous waste regulations, primarily found in Wisconsin Administrative Code Chapter NR 600 series, establish specific requirements for the management of hazardous waste. A key aspect of these regulations involves the identification and management of characteristic hazardous wastes. For a waste to be classified as hazardous due to corrosivity, it must exhibit a pH that is either less than or equal to 2, or greater than or equal to 12.5, when tested using a standardized method like the EPA SW-846 Method 9040. The regulation also addresses ignitability, toxicity, and reactivity. Ignitable hazardous waste includes liquids with a flash point less than 60 degrees Celsius (140 degrees Fahrenheit), non-liquids capable of causing fire under certain conditions, ignitable compressed gases, and oxidizers. Toxicity is determined by the Toxicity Characteristic Leaching Procedure (TCLP) for specific constituents exceeding regulatory limits. Reactivity involves wastes that are unstable, react violently with water, or are capable of detonation. Understanding these characteristics is fundamental for proper waste classification and subsequent management, including manifesting, storage, treatment, and disposal, to ensure compliance with state and federal environmental protection mandates.

The Wisconsin Department of Natural Resources (WDNR) oversees hazardous waste management under Chapter NR 600-685 of the Wisconsin Administrative Code, which aligns with the federal Resource Conservation and Recovery Act (RCRA). Generators of hazardous waste are subject to specific requirements based on the quantity 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, and no more than 1 kilogram (2.2 pounds) of acutely hazardous waste per calendar month. Furthermore, a CESQG must not accumulate more than 1,000 kilograms (2,200 pounds) of hazardous waste at any time. These generators have reduced regulatory burdens compared to small quantity generators (SQGs) and large quantity generators (LQGs). For example, CESQGs are not required to obtain an EPA identification number, manifest their waste shipments, or comply with specific storage time limits, provided they send their waste to a facility that is permitted to manage hazardous waste, a state-authorized municipal solid waste landfill, or a recycling facility. The key differentiator for CESQG status is the monthly generation rate and the total accumulation limit.

The Wisconsin Department of Natural Resources (WDNR) oversees hazardous waste management under Chapter NR 600 series of the Wisconsin Administrative Code, which aligns with the federal Resource Conservation and Recovery Act (RCRA). Generators of hazardous waste are classified based on the quantity of hazardous waste produced per month. A large quantity generator (LQG) is defined as a generator who generates 1,000 kilograms or more of hazardous waste in a calendar month, or who generates more than 1 kilogram of acute hazardous waste in a calendar month. A small quantity generator (SQG) generates between 100 and 1,000 kilograms of hazardous waste per month. A conditionally exempt small quantity generator (CESQG) generates 100 kilograms or less of hazardous waste per month, or 1 kilogram or less of acute hazardous waste per month. The scenario describes a facility in Wisconsin that consistently generates 850 kilograms of hazardous waste per month, and on one occasion, generated 1.5 kilograms of a specific hazardous waste designated as acutely hazardous. This single instance of exceeding the acute hazardous waste threshold for a month is the determining factor for generator status. Since the facility generated more than 1 kilogram of acute hazardous waste in that specific month, it is classified as a large quantity generator for that period and subsequent months until its generation rates change to fall below the LQG thresholds. Therefore, the facility must comply with the regulations applicable to LQGs, which include more stringent requirements for storage, manifest tracking, personnel training, and emergency preparedness compared to SQGs or CESQGs.

Wisconsin’s Hazardous Waste Management rules, primarily found in Wisconsin Administrative Code Chapter NR 660, align closely with federal Resource Conservation and Recovery Act (RCRA) regulations but also include state-specific provisions. One such area of state specificity pertains to the definition of a “generator” and the associated requirements for managing hazardous waste. For a small quantity generator (SQG) in Wisconsin, the threshold for hazardous waste generation is between 100 and 1,000 kilograms per month. This classification dictates specific accumulation time limits and manifest requirements. Specifically, an SQG can accumulate hazardous waste on-site for up to 180 days without a permit. If the waste needs to be transported over 180 days, or if the generator needs to transport waste to a facility that is more than 200 miles away, an extension might be necessary, or the generator might need to reclassify. However, the fundamental on-site accumulation limit for an SQG is 180 days. Beyond this period, the waste must be sent to a permitted treatment, storage, or disposal facility. Failure to adhere to these accumulation time limits can result in penalties and regulatory scrutiny, as it signifies a potential failure to manage the waste according to its hazardous characteristics and potential risks.

Wisconsin Administrative Code NR 661.001(3)(a) and 40 CFR § 262.11 delineate the generator’s responsibility for determining if a solid waste is a hazardous waste. This determination is a multi-step process. First, the generator must determine if the waste is excluded under NR 661.002 or 40 CFR § 261.4. If not excluded, the generator must then ascertain if the waste is listed as hazardous in NR 661.10 or 40 CFR Part 261 Subpart D. If the waste is not listed, the generator must determine if it exhibits any of the hazardous characteristics defined in NR 661.20 through NR 661.24 or 40 CFR Part 261 Subpart C (ignitability, corrosivity, reactivity, and toxicity). The toxicity characteristic is determined by the Toxicity Characteristic Leaching Procedure (TCLP) test, outlined in NR 661.24(2) and 40 CFR § 261.24. If the waste meets any of these criteria (listed or characteristic), it is considered a hazardous waste. The scenario describes a waste that is not listed and does not exhibit the characteristics of ignitability, corrosivity, or reactivity. Therefore, the critical step remaining for the generator is to evaluate its toxicity characteristic through appropriate testing.

The question probes the understanding of generator status determination under Wisconsin Hazardous Waste Management regulations, specifically focusing on the accumulation time limits for hazardous waste. Wisconsin Administrative Code (WAC) Chapter NR 661 establishes these limits based on a generator’s status. A small quantity generator (SQG) in Wisconsin can accumulate hazardous waste for up to 180 days. A large quantity generator (LQG) can accumulate hazardous waste for up to 90 days. The scenario describes a facility that generates more than 1,000 kilograms of hazardous waste in a calendar month, which clearly places it in the Large Quantity Generator category. The waste was generated on March 1st. The facility then ships the waste on June 1st. To determine if the 90-day accumulation limit was exceeded, we count the days from March 1st to June 1st. March has 31 days. April has 30 days. May has 31 days. June 1st is the shipping date. Therefore, the total accumulation period is 31 (March) + 30 (April) + 31 (May) + 1 (June) = 93 days. Since 93 days exceeds the 90-day limit for an LQG, the facility has violated the accumulation time requirements. The core concept tested is the generator status determination and the corresponding accumulation time limits as defined by Wisconsin’s hazardous waste regulations. Understanding these distinctions is crucial for compliance and preventing improper storage of hazardous materials.

The Wisconsin Department of Natural Resources (WDNR) oversees hazardous waste management under Chapter NR 600 series of the Wisconsin Administrative Code, which largely mirrors federal regulations under the Resource Conservation and Recovery Act (RCRA). A key aspect of hazardous waste management is the proper classification and manifesting of waste. When a generator produces a hazardous waste, they must determine if it meets the criteria for exclusion from the standard hazardous waste regulations. Specifically, certain wastes, if they meet stringent criteria for treatment and are rendered non-hazardous, may be excluded from the definition of hazardous waste. This exclusion process typically involves demonstrating that the waste has undergone a specific treatment process that effectively removes or neutralizes the hazardous characteristics. For wastes that remain hazardous, the generator must obtain an EPA identification number, comply with accumulation time limits, and prepare a Uniform Hazardous Waste Manifest for off-site shipment. The manifest tracks the waste from generation to final disposal, ensuring accountability. The question focuses on the generator’s responsibility to correctly identify and manage hazardous waste, including the potential for exclusion if specific treatment criteria are met, and the mandatory use of a manifest for all off-site shipments of hazardous waste. The scenario describes a generator producing a waste that is hazardous due to ignitability. Without evidence of a specific, approved treatment process that renders the waste non-hazardous, it remains classified as hazardous waste. Therefore, the generator must adhere to all applicable hazardous waste management requirements, including manifesting. The exclusion from manifesting is only applicable if the waste is no longer classified as hazardous, which is not indicated in the scenario.

Wisconsin Administrative Code NR 661.10(1) establishes the criteria for identifying hazardous waste based on characteristics. These characteristics include ignitability, corrosivity, reactivity, and toxicity. A waste is classified as hazardous if it exhibits any one of these characteristics. Toxicity is determined through the Toxicity Characteristic Leaching Procedure (TCLP) outlined in NR 661.24, which simulates leaching in a landfill. If the extract from a waste sample exceeds regulatory limits for specific contaminants, the waste is deemed toxic. For ignitability, wastes with a flash point below \(60^\circ C\) (\(140^\circ F\)) are classified as hazardous. Corrosivity is defined by a pH 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 encompasses wastes that are unstable, react violently with water, or generate toxic gases. Therefore, a waste generator in Wisconsin must test or have knowledge of their waste to determine if it meets any of these characteristic definitions to properly manage it under the hazardous waste regulations.

Wisconsin Administrative Code NR 661.0032(1)(a) outlines the criteria for determining if a solid waste is a hazardous waste. Specifically, it addresses the management of wastes from the production of pesticides. If a pesticide manufacturing facility in Wisconsin generates a waste that is listed in the federal regulations (40 CFR Part 261, Subpart D), it is presumed to be hazardous. However, even if a waste is not specifically listed, it can still be classified as hazardous if it exhibits one or more of the hazardous characteristics: ignitability, corrosivity, reactivity, or toxicity. The toxicity characteristic is determined by the Toxicity Characteristic Leaching Procedure (TCLP), as described in NR 661.24. If a waste, when subjected to the TCLP, leaches specific contaminants above regulatory thresholds, it is deemed hazardous due to toxicity. For pesticide manufacturing waste, the focus is often on whether it meets the criteria for a “P” or “U” listed waste under federal regulations, or if it exhibits a hazardous characteristic. The state of Wisconsin’s regulations align closely with federal EPA regulations for hazardous waste identification. Therefore, a waste from a pesticide production process that does not meet any listed criteria but fails the TCLP for any of the regulated constituents, such as certain heavy metals or organic compounds, would be classified as a hazardous waste. The key is that the waste exhibits a characteristic of hazardous waste as defined by the state’s adopted federal criteria.

Wisconsin Administrative Code Chapter NR 661, which mirrors federal regulations under the Resource Conservation and Recovery Act (RCRA), defines hazardous waste characteristics. One such characteristic is ignitability, described by specific criteria. For a liquid waste, ignitability is defined if it has a flash point less than \(60^\circ \text{C} (140^\circ \text{F})\). The flash point is the lowest temperature at which a liquid can vaporize to form an ignitable mixture in air. If a waste exhibits any of the characteristics of hazardous waste, it is subject to regulation as hazardous waste in Wisconsin. This includes requirements for generation, transportation, treatment, storage, and disposal. The Wisconsin Department of Natural Resources (WDNR) enforces these regulations. Understanding these characteristic definitions is crucial for proper waste classification and management to prevent environmental contamination and protect public health.

The Wisconsin Hazardous Waste Management Program, primarily governed by Wisconsin Administrative Code Chapter NR 600 series, outlines specific requirements for hazardous waste generators, transporters, and treatment, storage, and disposal facilities (TSDFs). A key aspect of this program is the management of characteristic hazardous wastes, which are defined by their properties such as ignitability, corrosivity, reactivity, and toxicity. When a generator determines that a waste exhibits one or more of these characteristics, it must be managed according to the applicable hazardous waste regulations. This includes proper identification, labeling, accumulation, manifesting for transport, and ultimate disposal at a permitted facility. The Generator Status determination, based on the monthly generation of hazardous waste, dictates the specific regulatory requirements a facility must follow, such as accumulation time limits and reporting obligations. For instance, a large quantity generator in Wisconsin must adhere to more stringent accumulation timeframes and may have additional record-keeping and reporting duties compared to a small quantity generator. The process of determining if a waste is hazardous involves both knowledge of the process that generated the waste and laboratory analysis if the process knowledge is insufficient or inconclusive. Wisconsin’s regulations are largely aligned with federal Resource Conservation and Recovery Act (RCRA) regulations but may include state-specific nuances or additional requirements.

Wisconsin Administrative Code NR 660 governs hazardous waste management, aligning with the federal Resource Conservation and Recovery Act (RCRA). Specifically, NR 662 outlines the standards for generators of hazardous waste. A key aspect for large quantity generators (LQGs) is the accumulation time limits for hazardous waste on-site before it must be shipped to a permitted treatment, storage, or disposal facility (TSDF). LQGs are permitted to accumulate hazardous waste for 90 days or less in approved areas such as a 90-day accumulation area or in a central accumulation area. During this period, the waste must be properly identified with specific labels, and containers must be in good condition and kept closed. If a generator exceeds this 90-day limit without proper authorization or without having made arrangements for off-site shipment, they may be considered to be operating a storage facility, which would then subject them to stricter storage regulations, including obtaining a storage permit. The question probes the understanding of these time constraints and the implications of exceeding them for a generator in Wisconsin. The correct answer reflects the regulatory maximum accumulation period for LQGs.

The Wisconsin Hazardous Waste Management Program, primarily governed by Wisconsin Administrative Code Chapter NR 600 series, establishes strict requirements for managing hazardous waste from generation to disposal. A key aspect is the identification and management of hazardous waste. Under Wisconsin law, a solid waste is presumed to be hazardous if it exhibits one or more characteristics of hazardous waste: ignitability, corrosivity, reactivity, or toxicity. For toxicity, the state often utilizes the Toxicity Characteristic Leaching Procedure (TCLP) as outlined in federal regulations, which Wisconsin has largely adopted. If a waste fails TCLP for certain constituents, it is classified as hazardous. Additionally, Wisconsin maintains a list of specific hazardous wastes, which are identified by their source or chemical composition. Generators are responsible for determining if their waste is hazardous. This determination can be made by testing the waste or by knowledge of the process that generated the waste. If a waste is determined to be hazardous, the generator must comply with applicable storage, transportation, and disposal requirements, including obtaining an EPA identification number and manifesting the waste. Failure to properly manage hazardous waste can result in significant penalties. The question assesses the understanding of the fundamental criteria for classifying a solid waste as hazardous under Wisconsin’s regulatory framework, emphasizing the characteristic properties and listed wastes.

The Wisconsin Hazardous Waste Management Program, primarily governed by Wisconsin Administrative Code Chapter NR 600 series, establishes stringent requirements for hazardous waste generators. A key aspect of these regulations pertains to the accumulation of hazardous waste on-site. Small Quantity Generators (SQGs) in Wisconsin are permitted to accumulate hazardous waste for up to 180 days without a storage permit, provided they do not accumulate more than 6,000 kilograms (approximately 13,228 pounds) of hazardous waste at any one time. Additionally, SQGs must not accumulate more than 1 kilogram of acutely hazardous waste or more than 100 kilograms of residues, contaminated materials, or soils from the treatment, storage, or disposal of acutely hazardous waste. For Large Quantity Generators (LQGs), the accumulation time limit is 90 days, and they are subject to higher quantity limits and more rigorous operational standards. The scenario describes a generator exceeding the 180-day accumulation period for non-acute hazardous waste, thereby necessitating a storage permit or immediate shipment of the waste. The question tests the understanding of these specific time and quantity thresholds for different generator categories under Wisconsin law.

The Wisconsin Department of Natural Resources (WDNR) oversees hazardous waste management under Chapter NR 600 series of the Wisconsin Administrative Code, which aligns with the federal Resource Conservation and Recovery Act (RCRA). Generators of hazardous waste are subject to specific management standards based on their generation rate. Small Quantity Generators (SQGs) in Wisconsin are defined as those who generate 100 to 1,000 kilograms of hazardous waste per month. Large Quantity Generators (LQGs) generate over 1,000 kilograms per month. Very Small Quantity Generators (VSQGs) generate 100 kilograms or less per month. The question asks about a generator exceeding the SQG threshold but not the LQG threshold. This places them squarely within the SQG category. Wisconsin Administrative Code NR 610.05 specifies that SQGs must comply with specific accumulation time limits and storage requirements, including manifesting shipments and having an EPA identification number. The key differentiator for SQGs regarding accumulation is the 180-day limit, with a potential 60-day extension if transportation to a treatment, storage, or disposal facility (TSDF) exceeds 180 days, provided the extension is necessary for the facility to accept the waste. This extension is contingent on the generator making arrangements for shipment within the initial 180 days. Therefore, a generator producing between 100 and 1,000 kg of hazardous waste per month in Wisconsin is classified as a Small Quantity Generator and must adhere to the 180-day accumulation limit, with the possibility of a 60-day extension under specific, documented circumstances related to transportation.

The Wisconsin Hazardous Waste Management Program, as outlined in Wisconsin Administrative Code Chapter NR 600 series, establishes requirements for the management of hazardous waste. Specifically, NR 662.017 addresses the generator’s responsibility for determining if a solid waste is a hazardous waste. This determination involves a two-step process. First, the generator must determine if the waste is excluded from regulation under NR 661.0004. If not excluded, the generator must then determine if the waste exhibits any of the hazardous characteristics defined in NR 661.020 through NR 661.024 (ignitability, corrosivity, reactivity, and toxicity) or if it is a listed hazardous waste under NR 661.010 through NR 661.015. The toxicity characteristic is determined by the Toxicity Characteristic Leaching Procedure (TCLP) test, which simulates leaching in a landfill. If the leachate concentration of any of the specified constituents exceeds the regulatory levels, the waste is deemed hazardous. For a waste to be considered hazardous due to toxicity characteristic, it must fail the TCLP test for at least one of the regulated constituents. The question asks about the primary method for determining if a waste exhibits the toxicity characteristic. The TCLP is the defined regulatory test for this purpose. Therefore, the correct answer focuses on this specific testing methodology.

The Wisconsin Department of Natural Resources (WDNR) promulgates regulations under Chapter NR 600 series of the Wisconsin Administrative Code, which aligns with and often supplements federal Resource Conservation and Recovery Act (RCRA) requirements. Specifically, NR 600.03(15) defines “Generator” in a manner that establishes responsibility based on the quantity of hazardous waste produced per month. A small quantity generator (SQG) is defined as a generator who generates less than 1,000 kilograms (approximately 2,200 pounds) of hazardous waste in a calendar month. This threshold is crucial for determining the applicable management standards. Facilities that generate 1,000 kilograms or more of hazardous waste in a calendar month are classified as large quantity generators (LQGs), subject to more stringent requirements. Therefore, a facility generating 950 kilograms of hazardous waste in January and 1,100 kilograms in February would not be consistently classified as a small quantity generator because the monthly generation rate exceeded the SQG threshold in February. The determination of generator status is based on the highest monthly generation rate in a calendar month. A facility’s generator status is determined by its *maximum* monthly generation rate. If a facility generates 950 kg in January and 1,100 kg in February, its status for February and subsequent months until its generation rate drops below 1,000 kg again would be that of a large quantity generator. However, the question asks about the status in January. In January, the generation was 950 kg, which falls below the 1,000 kg threshold for a small quantity generator. The fact that they generated more in February does not retroactively change their January status.

Wisconsin’s hazardous waste regulations, particularly under Chapter NR 661 of the Wisconsin Administrative Code, which aligns with federal Resource Conservation and Recovery Act (RCRA) requirements, establish criteria for identifying hazardous waste. One such criterion involves the characteristic of corrosivity. A waste exhibits the characteristic of corrosivity 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 and corrodes steel at a specified rate. For aqueous wastes, the pH measurement is a direct indicator. A waste with a pH of 1.5 is well within the range that defines corrosivity. Therefore, a waste that is aqueous and exhibits a pH of 1.5 would be classified as a corrosive hazardous waste under Wisconsin law. This classification is crucial for proper management, including storage, transportation, treatment, and disposal, to protect human health and the environment. The characteristic of corrosivity is one of the four primary characteristics (along with ignitability, reactivity, and toxicity) used to identify hazardous wastes when they are not specifically listed.

The Wisconsin Hazardous Waste Management Program, primarily governed by Wisconsin Administrative Code Chapter NR 600 series, establishes requirements for the generation, transportation, treatment, storage, and disposal of hazardous waste. A key aspect of this program is the identification and management of wastes that are characteristic hazardous wastes, as defined by NR 601.04. These characteristics include ignitability, corrosivity, reactivity, and toxicity. For a waste to be considered a characteristic hazardous waste due to toxicity, it must exhibit a toxicity characteristic as determined by the Toxicity Characteristic Leaching Procedure (TCLP). Wisconsin adopts the federal TCLP test, which is outlined in 40 CFR Part 261, Appendix C. If a waste leaches specific contaminants above regulatory thresholds, it is classified as toxic hazardous waste. For example, if a waste sample, when subjected to the TCLP, results in a leachate concentration of lead greater than 5.0 mg/L, it would be classified as a D008 hazardous waste. The regulatory framework in Wisconsin, mirroring federal standards, requires generators to determine if their waste exhibits any of these characteristics. This determination is a fundamental step in ensuring compliance with manifest requirements, proper storage, and appropriate disposal facility selection. The question probes the understanding of how a waste is classified as hazardous based on its leaching potential, specifically referencing the toxicity characteristic and the methodology used for its determination under Wisconsin’s regulatory scheme. The correct answer reflects the regulatory threshold for lead in the TCLP test as adopted by Wisconsin.

The Wisconsin Department of Natural Resources (WDNR) regulates hazardous waste management under Chapter NR 600 series of the Wisconsin Administrative Code, which is largely aligned with federal Resource Conservation and Recovery Act (RCRA) regulations. A key aspect of these regulations involves the identification and management of hazardous waste. Characteristic hazardous wastes are defined by specific properties that make them dangerous. These properties are ignitability, corrosivity, reactivity, and toxicity. A waste exhibits ignitability if it is a liquid with a flash point less than 60 degrees Celsius (140 degrees Fahrenheit), a non-liquid solid that is capable of causing fire through friction, absorption of moisture, or spontaneous chemical changes and, when ignited, burns so vigorously and persistently as to create a hazard, an ignitable compressed gas, or an oxidizer. A waste exhibits corrosivity 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 at a rate greater than 6.35 mm per year. A waste exhibits reactivity if it is unstable, reacts violently with water, forms potentially explosive mixtures with water, generates toxic gases when mixed with water, or is a cyanide or sulfide bearing waste that, when exposed to pH conditions between 2 and 12.5, can generate toxic gases, vapors or fumes in a quantity sufficient to present a danger to human health or the environment. A waste exhibits toxicity if, using the Toxicity Characteristic Leaching Procedure (TCLP), the extract from the solid waste contains any of the contaminants listed in NR 605.04 (4) at concentrations equal to or greater than the respective regulatory levels. The question asks about a waste that can spontaneously combust. Spontaneous combustion is a characteristic of ignitability. Therefore, a waste that can spontaneously combust would be classified as an ignitable hazardous waste under Wisconsin’s hazardous waste regulations.