Idaho’s hazardous waste program is primarily governed by the Idaho Department of Environmental Quality (IDEQ) under the authority of the Idaho Hazardous Waste Management Act, which mirrors many aspects of the federal Resource Conservation and Recovery Act (RCRA). When a generator first determines that a solid waste is hazardous, they must obtain an EPA identification number. This is a fundamental requirement for any entity that generates, transports, treats, stores, or disposes of hazardous waste. The process of obtaining an EPA ID number is the initial step in tracking and managing hazardous waste from its point of generation to its final disposition. This identification is crucial for regulatory oversight and compliance. Without an EPA ID number, a generator cannot legally manifest hazardous waste for off-site shipment or participate in the regulated hazardous waste management system within Idaho. Subsequent steps, such as proper waste characterization, accumulation time limits, and manifesting, all depend on this initial identification. The Idaho Hazardous Waste Management Act, specifically IDAPA 37.01.01, outlines these requirements for hazardous waste generators.

The Idaho Department of Environmental Quality (IDEQ) oversees hazardous waste management within the state. When a generator discovers they have accumulated hazardous waste in quantities exceeding the limits for their generator status, they must immediately notify the IDEQ. This notification requirement is crucial for ensuring proper tracking and management of hazardous waste, aligning with the principles of the Resource Conservation and Recovery Act (RCRA) as implemented in Idaho. Generators are categorized based on the amount of hazardous waste they produce monthly. For instance, a large quantity generator (LQG) is defined as a facility that produces 1,000 kilograms or more of hazardous waste per month, or more than 1 kilogram of acutely hazardous waste per month. If a facility that typically operates as a small quantity generator (SQG) exceeds these thresholds, even temporarily, they must re-evaluate their status and comply with the more stringent requirements applicable to LQGs. This includes adhering to specific accumulation time limits and manifesting procedures for off-site transport. The prompt notification ensures that the state can monitor the situation and provide guidance if necessary, maintaining public health and environmental protection. The specific Idaho regulation governing this notification is found within the Idaho Administrative Procedures Act, specifically in rules promulgated by the IDEQ concerning hazardous waste management.

The Idaho Department of Environmental Quality (IDEQ) implements the Resource Conservation and Recovery Act (RCRA) within the state, which governs hazardous waste management. A key aspect of this is the identification and management of hazardous waste. Idaho, like other states, adopts federal definitions and requirements but may have specific state-level nuances. Under RCRA, a waste is considered hazardous if it is either specifically listed by the Environmental Protection Agency (EPA) or exhibits certain hazardous characteristics. The characteristic wastes are ignitability, corrosivity, reactivity, and toxicity. The toxicity characteristic is determined by the Toxicity Characteristic Leaching Procedure (TCLP). If a waste leaches specific contaminants above regulatory thresholds during the TCLP test, it is classified as toxic hazardous waste. Idaho’s regulations, primarily found in Idaho Administrative Code (IAC) 37.01.01, align with federal RCRA standards. Therefore, a waste exhibiting any of the four characteristics, including toxicity as determined by TCLP, is regulated as hazardous waste in Idaho. The scenario describes a waste that, when subjected to the TCLP, shows a concentration of lead at 15 mg/L. The federal and Idaho regulatory limit for lead under the toxicity characteristic is 5.0 mg/L. Since 15 mg/L is greater than 5.0 mg/L, the waste exhibits the toxicity characteristic and is therefore classified as hazardous waste.

Idaho’s Hazardous Waste Management Act, particularly as it aligns with the Resource Conservation and Recovery Act (RCRA) at the federal level, establishes a comprehensive framework for managing hazardous waste from its generation to its final disposal. A critical aspect of this framework is the identification and management of hazardous waste. Idaho Department of Environmental Quality (DEQ) regulations, mirroring federal RCRA guidelines, define hazardous waste through specific listing criteria and characteristic properties. Characteristic wastes are those that exhibit at least one of four key characteristics: ignitability, corrosivity, reactivity, or toxicity. The toxicity characteristic is determined by the Toxicity Characteristic Leaching Procedure (TCLP), a standardized test designed to simulate leaching that may occur in a landfill. If a waste, when subjected to TCLP, exhibits a concentration of specific contaminants above regulatory thresholds, it is classified as a hazardous waste. For example, if a waste sample from a metal plating facility in Boise, Idaho, when tested using TCLP, shows a concentration of lead exceeding the regulatory limit of 5.0 mg/L, it would be classified as a hazardous waste due to the toxicity characteristic. This classification triggers stringent management requirements, including proper storage, labeling, transportation by licensed haulers, and disposal at permitted treatment, storage, and disposal facilities (TSDFs). The generator of the waste bears the primary responsibility for correctly identifying its hazardous nature. Failure to do so can result in significant penalties under Idaho law. Understanding the TCLP and its constituent contaminants, such as lead, cadmium, mercury, and specific organic compounds, is therefore fundamental for compliance.

The Idaho Department of Environmental Quality (IDEQ) implements the Hazardous Waste Management Act, which aligns with the Resource Conservation and Recovery Act (RCRA) at the federal level. Idaho’s regulations, found in Idaho Administrative Procedures Act (IDAPA) 37.01.01, govern the management of hazardous waste. Generators of hazardous waste are classified based on the quantity of waste they produce per month. Small Quantity Generators (SQGs) produce between 100 and 1,000 kilograms of hazardous waste per month. Large Quantity Generators (LQGs) produce more than 1,000 kilograms of hazardous waste per month. Very Small Quantity Generators (VSQGs) produce 100 kilograms or less of hazardous waste per month. The specific requirements for accumulation time, personnel training, contingency planning, and reporting differ significantly between these generator categories. For instance, LQGs have stricter requirements for emergency preparedness and must notify the EPA or authorized state agency of their hazardous waste activities, obtain an EPA identification number, and comply with specific time limits for on-site accumulation of hazardous waste. SQGs have reduced requirements compared to LQGs, and VSQGs have the least stringent requirements, often being exempt from many RCRA provisions, though they still must manage their waste in a manner that prevents releases to the environment and may be subject to state-specific requirements. Understanding these distinctions is crucial for compliance and for determining the appropriate management standards for hazardous waste generated within Idaho.

Idaho’s Hazardous Waste Management Act, administered by the Idaho Department of Environmental Quality (IDEQ), aligns with the federal Resource Conservation and Recovery Act (RCRA). A key aspect of this regulation involves the management of hazardous waste from “cradle to grave.” Generators of hazardous waste are responsible for identifying, accumulating, and ultimately ensuring the proper treatment, storage, and disposal of their waste. Small Quantity Generators (SQGs) in Idaho, as defined by specific accumulation time limits and quantity thresholds, have different requirements than Large Quantity Generators (LQGs). For instance, an SQG may accumulate hazardous waste on-site for up to 180 days without a permit, provided they meet certain conditions such as marking containers and maintaining specific operating standards. If an SQG needs to accumulate waste for longer than 180 days but not exceeding 270 days, they must operate under a RCRA Part B permit or an equivalent state permit. The specific quantity thresholds for SQGs in Idaho are generally 100 to 1,000 kilograms of hazardous waste per month, or less than 1 kilogram of acute hazardous waste per month. Exceeding these thresholds or accumulation times without proper authorization can lead to enforcement actions. The question tests the understanding of these specific accumulation timeframes and the conditions under which an SQG can extend them.

Idaho’s Hazardous Waste Management Act, administered by the Idaho Department of Environmental Quality (IDEQ), governs the generation, transportation, treatment, storage, and disposal of hazardous waste within the state. A key aspect of this regulation involves the classification and management of wastes that exhibit specific hazardous characteristics. Ignitability, corrosivity, reactivity, and toxicity are the four primary characteristics defined under both federal Resource Conservation and Recovery Act (RCRA) regulations, which Idaho largely mirrors, and state-specific interpretations. A waste exhibits ignitability if it is a liquid with a flash point less than 60 degrees Celsius (140 degrees Fahrenheit), or a non-liquid solid capable of causing fire through friction, absorption of moisture, or spontaneous chemical changes and which, under standard conditions, ignites and burns so vigorously as to present a hazard. It also includes ignitable compressed gases and oxidizers. Corrosivity pertains to wastes that are aqueous and have a pH less than or equal to 2 or greater than or equal to 12.5, or that are liquid and corrode steel at a specified rate. Reactivity relates to wastes that are unstable under normal conditions, can form explosive mixtures with water, generate toxic gases when mixed with water or under corrosive conditions, or are capable of detonation or explosive reaction. Toxicity is determined by the Toxicity Characteristic Leaching Procedure (TCLP), where if a leachate from the waste contains certain contaminants at concentrations equal to or greater than regulatory levels, the waste is deemed toxic. For a waste to be managed as hazardous under Idaho law due to its characteristics, it must meet the criteria for at least one of these four characteristics. The Idaho Administrative Procedures Act (IDAPA) 37.01.01, specifically Section 002, outlines these characteristic definitions and testing requirements, aligning with federal standards. Therefore, understanding these defining parameters is crucial for proper hazardous waste determination and management in Idaho.

The Idaho Department of Environmental Quality (IDEQ) oversees hazardous waste management within the state, implementing regulations that align with but can also be more stringent than federal Resource Conservation and Recovery Act (RCRA) requirements. 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 monthly generation rates. These classifications dictate specific management, storage, and reporting obligations. For instance, an SQG typically generates between 100 kg and 1,000 kg of hazardous waste per month, or no more than 1 kg of acute hazardous waste. LQGs generate over 1,000 kg of hazardous waste per month or more than 1 kg of acute hazardous waste. Idaho Administrative Code (IAC) 37.01.01 governs hazardous waste management. A key aspect of compliance for any generator is maintaining proper documentation, including manifests for off-site shipments and records of waste characterization. The concept of “cradle-to-grave” management, originating from RCRA, means that the generator remains responsible for the hazardous waste from its generation until its ultimate disposal. This responsibility extends to ensuring that the chosen treatment, storage, and disposal facilities (TSDFs) are permitted and operate in compliance with all applicable regulations. Proper labeling of containers with the words “Hazardous Waste” and the appropriate hazard codes is also a fundamental requirement. Emergency preparedness and prevention plans are mandated for LQGs and are encouraged for SQGs, detailing procedures for responding to spills, fires, or other emergencies to minimize risks to human health and the environment.

The Idaho Department of Environmental Quality (IDEQ) implements the Resource Conservation and Recovery Act (RCRA) within the state, which governs hazardous waste management. Under Idaho Administrative Code (IAC) 37.01.01, specifically focusing on generator requirements, a facility generating 1,000 kilograms or more of hazardous waste in a calendar month is classified as a Large Quantity Generator (LQG). LQGs are subject to the most stringent management standards. These include requirements for personnel training, emergency preparedness and prevention, contingency plans, and manifest system usage. Crucially, LQGs must notify the IDEQ of their hazardous waste activities and obtain an EPA identification number. They are also required to store hazardous waste on-site for no more than 90 days without a permit or interim status. The manifest system is a key component, ensuring that hazardous waste is tracked from its point of generation to its final disposal. The question asks about the maximum on-site storage duration for a facility meeting the criteria of a Large Quantity Generator in Idaho. Based on the regulations, this period is 90 days.

The Idaho Department of Environmental Quality (IDEQ) regulates hazardous waste management under the authority of the Idaho Hazardous Waste Management Act and its associated rules, which are largely aligned with the federal Resource Conservation and Recovery Act (RCRA). A generator’s status, which determines the stringency of management requirements, is based on the quantity of hazardous waste produced per calendar month. Small Quantity Generators (SQGs) are defined as those who generate at least 100 kilograms (kg) but less than 1,000 kg of hazardous waste in a calendar month, or less than 1 kg of acutely hazardous waste per calendar month. Large Quantity Generators (LQGs) generate 1,000 kg or more of hazardous waste per calendar month, or 1 kg or more of acutely hazardous waste per calendar month. Very Small Quantity Generators (VSQGs) generate 100 kg or less of hazardous waste per calendar month, or 1 kg or less of acutely hazardous waste per calendar month. Therefore, a facility producing 950 kg of hazardous waste and 0.5 kg of acutely hazardous waste in a given month would be classified as a Small Quantity Generator because the hazardous waste quantity exceeds the VSQG threshold but remains below the LQG threshold, and the acutely hazardous waste quantity also falls within the SQG definition. This classification dictates specific requirements for storage, record-keeping, personnel training, and emergency preparedness.

The Idaho Department of Environmental Quality (IDEQ) oversees hazardous waste management under the authority of the Idaho Hazardous Waste Management Act and associated rules, which are largely aligned with the federal Resource Conservation and Recovery Act (RCRA). When a generator of hazardous waste produces waste that meets the criteria for a characteristic hazardous waste or is listed as hazardous, they must manage it according to specific requirements. The accumulation of hazardous waste on-site by a small quantity generator (SQG) is subject to time and quantity limits to prevent the buildup of hazardous materials and ensure proper management. Idaho regulations, mirroring federal RCRA, define SQGs as entities that produce between 100 and 1,000 kilograms of hazardous waste per month, or less than 1 kilogram of acutely hazardous waste per month. These generators can accumulate up to 6,000 kilograms of hazardous waste on-site for no more than 180 days. If a generator needs to ship the waste over 200 miles, they may accumulate it for up to 270 days. The key distinction for SQGs is the 180-day limit for on-site accumulation unless the longer distance provision applies. Exceeding these limits or failing to comply with storage requirements, such as proper container labeling, closure, and secondary containment, can result in violations and penalties. The scenario describes a facility that is a small quantity generator and has accumulated 5,500 kilograms of hazardous waste. The waste is destined for a treatment facility located 250 miles away. The critical factor is the accumulation time. For SQGs, the standard accumulation time is 180 days. However, if the waste is shipped to a treatment, storage, or disposal facility located more than 200 miles away, the accumulation period can be extended to 270 days. Since the facility is an SQG and the destination is over 200 miles away, the maximum allowable accumulation period is 270 days.

The Idaho Department of Environmental Quality (DEQ) oversees hazardous waste management within the state, primarily through the implementation of the Idaho Hazardous Waste Management Act and its associated rules, which are largely aligned with the federal Resource Conservation and Recovery Act (RCRA). When a generator of hazardous waste produces a waste stream that is not specifically listed as hazardous, they must determine if the waste exhibits any hazardous characteristics. These characteristics are ignitability, corrosivity, reactivity, and toxicity. The toxicity characteristic is determined by the Toxicity Characteristic Leaching Procedure (TCLP). If the TCLP extract of the waste contains any of the contaminants listed in 40 CFR Part 261, Subpart C, Appendix VIII, at or above the regulatory levels specified in 40 CFR §261.24, the waste is classified as hazardous due to toxicity. In Idaho, generators must maintain records of their hazardous waste determinations, including any testing performed. The generator is responsible for correctly identifying and managing their hazardous waste according to the applicable regulations. Failing to properly characterize waste can lead to significant penalties and environmental liabilities. The scenario describes a situation where a generator in Idaho has identified a waste stream. They have not found it on the federal or state listed waste codes. Therefore, the crucial step is to assess if the waste exhibits any of the four hazardous characteristics. For toxicity, this involves conducting the TCLP test and comparing the results to the established regulatory thresholds. If the TCLP results for any of the regulated constituents exceed these thresholds, the waste is deemed hazardous. This process ensures that all hazardous wastes, whether listed or characteristic, are managed appropriately in Idaho to protect human health and the environment.

The Idaho Hazardous Waste Management Act, primarily governed by Idaho Code Title 39, Chapter 44, establishes a framework for the generation, transportation, treatment, storage, and disposal of hazardous waste within the state. A key aspect of this act, mirroring federal RCRA (Resource Conservation and Recovery Act) principles, is the concept of “cradle-to-grave” management. This means that responsibility for hazardous waste extends from its point of generation through its final disposition. Idaho’s program is authorized by the U.S. Environmental Protection Agency (EPA) to implement and enforce hazardous waste regulations. Generators are classified based on the quantity of hazardous waste they produce per month. Small Quantity Generators (SQGs) typically produce between 100 and 1,000 kilograms of hazardous waste per month, or less than 100 kilograms of acutely hazardous waste per month. Large Quantity Generators (LQGs) produce more than 1,000 kilograms of hazardous waste per month, or more than 100 kilograms of acutely hazardous waste per month. Very Small Quantity Generators (VSQGs) produce 100 kilograms or less of hazardous waste per month. Each generator category has distinct regulatory requirements regarding storage limits, personnel training, emergency preparedness, record-keeping, and reporting. For instance, LQGs face the most stringent requirements, including biennial reporting and more rigorous contingency planning. SQGs have reduced requirements compared to LQGs, and VSQGs have the least stringent regulations, often being able to manage their waste through specific state or local programs. The question probes the understanding of these generator classifications and their associated regulatory burdens under Idaho law.

The Idaho Hazardous Waste Management Act, specifically Idaho Code Title 39 Chapter 1, establishes the framework for regulating hazardous waste. The Department of Environmental Quality (DEQ) is tasked with implementing these regulations. A critical aspect of this act is the definition of “hazardous waste” and the responsibilities associated with its generation, treatment, storage, and disposal. Idaho has adopted regulations that are largely consistent with the federal Resource Conservation and Recovery Act (RCRA) but may include state-specific provisions or interpretations. When considering a facility that generates waste exhibiting characteristics of ignitability, corrosivity, reactivity, or toxicity, or is listed as a hazardous waste by the EPA or the state of Idaho, it is presumed to be a hazardous waste generator. The generator’s responsibility extends to proper identification, management, and ensuring that the waste is transported by a licensed hazardous waste transporter to a permitted treatment, storage, or disposal facility (TSDF). Idaho Code Section 39-112 provides the DEQ with the authority to adopt rules and regulations necessary to implement the provisions of the Hazardous Waste Management Act, including those related to manifest requirements and generator responsibilities. The question focuses on the initial classification and the generator’s duty to ensure proper management from the point of generation, which is a fundamental principle in hazardous waste law. The correct option reflects the core obligation of a generator to identify and manage hazardous waste according to state and federal requirements, including the use of licensed transporters and permitted facilities.

Idaho’s hazardous waste program, administered by the Idaho Department of Environmental Quality (IDEQ), is primarily governed by the Idaho Hazardous Waste Management Act and its corresponding rules, found in Idaho Administrative Procedures Act (IDAPA) 37.01.10, “Rules and Standards for Hazardous Waste Management.” This regulatory framework aligns with the federal Resource Conservation and Recovery Act (RCRA) but may include state-specific nuances. When a generator determines that a hazardous waste is no longer subject to the manifest requirements for off-site shipment, such as when the waste is being treated or disposed of on-site in a permitted hazardous waste management unit, they must retain records demonstrating this determination. The specific record retention period for hazardous waste manifests and related documentation in Idaho, mirroring federal requirements under 40 CFR Part 262, is generally three years from the date the waste was last sent to an off-site facility or the date the on-site management concluded. This period ensures that regulatory agencies can conduct audits and investigations into the waste’s management history. The generator must maintain proof that the waste was managed in accordance with applicable regulations, which could include records of on-site treatment, disposal, or transfer to an authorized on-site management unit. The intent is to ensure accountability and proper environmental stewardship throughout the waste’s lifecycle, even when it leaves the direct purview of the manifest system for off-site transportation.

The Idaho Department of Environmental Quality (IDEQ) regulates hazardous waste management under the authority of the Idaho Hazardous Waste Management Act (IDAPA 37.01.01). This act aligns with the federal Resource Conservation and Recovery Act (RCRA). When a generator accumulates hazardous waste on-site for more than 90 days but less than 180 days, and they are considered a large quantity generator (LQG), they must meet specific storage requirements. These requirements include obtaining an EPA identification number, proper labeling of containers with the words “Hazardous Waste,” accumulation start dates, and the appropriate EPA hazardous waste codes. Furthermore, LQGs must maintain a written contingency plan, conduct regular inspections of their storage areas, and ensure personnel are trained on hazardous waste management procedures. The generator must also manifest all shipments of hazardous waste to a permitted treatment, storage, or disposal facility (TSDF). The accumulation time limit for LQGs is typically 90 days. If a generator exceeds 90 days but remains within 180 days, they may operate under specific extensions or variances, but this usually involves a permit modification or a specific regulatory exemption. However, the question implies a situation where a generator has accumulated waste for more than 90 days but less than 180 days without explicitly stating a permit modification or exemption. In the absence of such specific allowances, the standard accumulation limit for an LQG is 90 days. If they exceed this, they are generally considered to be operating an unpermitted storage facility, which is a violation. Therefore, the primary obligation is to ensure compliance with the 90-day accumulation limit or have obtained the necessary permits or variances for extended storage. The question asks about the *primary* obligation when exceeding 90 days but not 180. The most critical and immediate obligation, assuming no prior authorization for extension, is to cease accumulation beyond the 90-day limit and prepare for off-site shipment. If an extension has been granted, then adherence to the terms of that extension becomes paramount. Without that explicit information, the default and most fundamental obligation is to comply with the established accumulation period. The Idaho Hazardous Waste Management Act, consistent with RCRA, mandates that a generator may accumulate hazardous waste on-site for up to 90 days without a permit. If a generator exceeds the 90-day limit, they must either obtain a permit for storage or ship the waste off-site to a permitted facility. The scenario describes a situation where the generator has accumulated waste for more than 90 days but less than 180 days. The critical point is that exceeding the 90-day limit without proper authorization (such as a permit or a specific variance for extended storage) places the generator in violation of the regulations. Therefore, the most immediate and overarching obligation is to ensure that all hazardous waste is either shipped off-site to a permitted treatment, storage, or disposal facility (TSDF) or that the generator has obtained the necessary permits or variances to store the waste beyond the 90-day period, in accordance with IDAPA 37.01.01. The question is testing the understanding of the fundamental accumulation time limits for hazardous waste generators in Idaho.

Idaho’s Hazardous Waste Management Act, administered by the Idaho Department of Environmental Quality (IDEQ), defines hazardous waste based on characteristics and listings. Characteristic wastes exhibit ignitability, corrosivity, reactivity, or toxicity. Listed wastes are specific wastes generated from particular industrial processes or discarded commercial chemical products. Idaho’s regulations, found in Idaho Administrative Code (IAC) 37.01.01, align with the federal Resource Conservation and Recovery Act (RCRA) but may include stricter state-specific requirements. A generator’s responsibility begins with identifying whether a waste is hazardous. If a waste is determined to be hazardous, the generator must comply with accumulation time limits, storage requirements, manifesting procedures for transportation, and proper disposal at a permitted treatment, storage, and disposal facility (TSDF). The Act emphasizes cradle-to-grave management. Idaho’s approach to waste management prioritizes pollution prevention and resource recovery where feasible, but ultimately mandates safe disposal of hazardous materials. The classification of a waste stream as either hazardous or non-hazardous is a foundational step that dictates all subsequent regulatory obligations for its management and disposal within Idaho. This classification process is critical for ensuring compliance and protecting public health and the environment.

The Idaho Department of Environmental Quality (IDEQ) implements the Hazardous Waste Management Act, which aligns with the federal Resource Conservation and Recovery Act (RCRA). A key aspect of this regulation is the management of hazardous waste from “cradle to grave.” Generators of hazardous waste are responsible for identifying, classifying, and managing their waste according to specific standards. Idaho Administrative Code (IAC) 37.01.01 defines hazardous waste and outlines the requirements for generators, transporters, and treatment, storage, and disposal facilities (TSDFs). For a small quantity generator (SQG) in Idaho, the accumulation time limit for hazardous waste on-site without a permit is 180 days. However, if the SQG needs to transport its waste over 200 miles, this accumulation time limit can be extended to 270 days, provided certain conditions are met, as outlined in IAC 37.01.01.701. This extension is a specific provision for SQGs facing logistical challenges in transporting their waste to authorized facilities. The definition of a small quantity generator in Idaho is based on the amount of hazardous waste generated per month, typically between 100 and 1,000 kilograms. The core principle is to ensure that hazardous waste is managed safely and does not pose a threat to human health or the environment, regardless of the generator’s size or the distance to a disposal facility.

Idaho’s Hazardous Waste Management Act, administered by the Idaho Department of Environmental Quality (IDEQ), aligns with the federal Resource Conservation and Recovery Act (RCRA). A critical aspect of this regulation is the management of hazardous waste from its point of generation to its final disposal. For small quantity generators (SQGs), specific requirements apply to ensure safe handling and storage. SQGs in Idaho are generally defined as those who generate between 100 and 1,000 kilograms of hazardous waste per month. These generators must comply with storage time limits and quantity limits. A key requirement for SQGs is that they cannot accumulate more than 6,000 kilograms of hazardous waste on-site at any one time. Furthermore, hazardous waste can only be stored for a maximum of 180 days without a permit. If an SQG needs to transport their hazardous waste off-site to a treatment, storage, or disposal facility (TSDF), they must use a manifest system. The manifest tracks the hazardous waste from the generator to the TSDF, ensuring accountability and proper management. The manifest is a crucial document that accompanies the shipment and is signed by the generator, the transporter, and the owner or operator of the TSDF. This system is designed to prevent illegal dumping and ensure that hazardous waste is managed in an environmentally sound manner. The specific manifest requirements, including the number of copies and information to be included, are detailed in Idaho’s administrative rules, which are largely based on RCRA regulations. Compliance with these manifest requirements is essential for SQGs to demonstrate responsible hazardous waste management.

The Idaho Hazardous Waste Management Act, specifically as it aligns with the Resource Conservation and Recovery Act (RCRA) at the federal level, establishes a framework for identifying, tracking, and managing hazardous waste from its generation to its final disposal. The concept of “cradle-to-grave” management is central to this framework. This means that the generator of the hazardous waste is responsible for its management throughout its entire lifecycle. When a generator transfers hazardous waste to another entity for transportation or treatment, they must ensure that the receiving entity is properly permitted and that the waste is accompanied by a manifest. The manifest is a critical document that tracks the waste from the generator to the transporter and finally to the permitted treatment, storage, or disposal facility (TSDF). Idaho’s regulations, mirroring federal requirements, mandate that generators maintain records of these manifests for a specified period, typically three years. This record-keeping requirement is crucial for demonstrating compliance and for accountability in the event of an incident or release. Therefore, the generator’s responsibility does not cease upon handing over the waste; it extends to ensuring proper documentation and record retention.

The Idaho Department of Environmental Quality (IDEQ) oversees hazardous waste management under the authority of the Idaho Hazardous Waste Management Act and its corresponding rules, which are largely based on the federal Resource Conservation and Recovery Act (RCRA). A generator is classified based on the amount of hazardous waste produced per month. Small Quantity Generators (SQGs) produce between 100 and 1,000 kilograms of hazardous waste per month, or less than 1 kilogram of acutely hazardous waste per month. Large Quantity Generators (LQGs) produce 1,000 kilograms or more of hazardous waste per month, or more than 1 kilogram of acutely hazardous waste per month. Conditionally Exempt Small Quantity Generators (CESQGs), now often referred to as Very Small Quantity Generators (VSQGs) under federal revisions that Idaho often adopts, produce 100 kilograms or less of hazardous waste per month and less than 1 kilogram of acutely hazardous waste per month. The scenario describes a facility in Idaho that consistently generates 850 kilograms of hazardous waste per month and 0.5 kilograms of acutely hazardous waste per month. This falls squarely within the definition of a Small Quantity Generator for both waste categories, as it exceeds the VSQG threshold for non-acute hazardous waste but remains below the LQG threshold for both types of waste. Therefore, the facility is classified as a Small Quantity Generator.

The Idaho Department of Environmental Quality (IDEQ) implements the Resource Conservation and Recovery Act (RCRA) within Idaho. Under RCRA, facilities that generate hazardous waste are subject to specific management standards. The question pertains to the criteria for determining if a generator is a small quantity generator (SQG) or a large quantity generator (LQG) in Idaho, which is directly tied to the amount of hazardous waste generated per month. Idaho regulations, mirroring federal RCRA regulations, define these categories based on monthly generation rates. A large quantity generator is defined as a facility that generates 1,000 kilograms (kg) or more of hazardous waste, or 1 kilogram (kg) or more of acute hazardous waste, in a calendar month. A small quantity generator is defined as a facility that generates more than 100 kilograms (kg) but less than 1,000 kilograms (kg) of hazardous waste in a calendar month, and less than 1 kilogram (kg) of acute hazardous waste in a calendar month. The scenario describes a facility generating 950 kg of hazardous waste and 0.5 kg of acute hazardous waste in a calendar month. To determine the generator status, we compare these amounts to the thresholds. Since the facility generates 950 kg of hazardous waste, which is greater than 100 kg but less than 1,000 kg, it meets the hazardous waste threshold for a small quantity generator. Furthermore, it generates 0.5 kg of acute hazardous waste, which is less than the 1 kg threshold for acute hazardous waste. Therefore, based on both criteria, the facility qualifies as a small quantity generator. The total amount of hazardous waste generated (950 kg) is the primary factor in this specific scenario, placing it squarely within the SQG classification.

The Idaho Department of Environmental Quality (IDEQ) implements the Resource Conservation and Recovery Act (RCRA) within the state. Idaho’s hazardous waste regulations, found in Idaho Administrative Code (IAC) 37.01.01, define hazardous waste and establish management standards. A key aspect is the identification and listing of hazardous wastes. Idaho adopts by reference federal hazardous waste regulations under 40 CFR Parts 260-279, but can also list wastes as hazardous based on state-specific criteria. When a generator produces a waste that is not explicitly listed in the federal or state regulations, they must determine if it exhibits any of the four hazardous characteristics: ignitability, corrosivity, reactivity, or toxicity. The toxicity characteristic is determined by the Toxicity Characteristic Leaching Procedure (TCLP), outlined in 40 CFR Part 261, Subpart C. If a waste leaches specific contaminants above regulatory thresholds during the TCLP test, it is classified as a hazardous waste (D-list waste). For instance, if a waste sample from a metal plating facility in Boise, Idaho, subjected to TCLP testing, shows lead leaching at a concentration of 6.5 mg/L, this exceeds the federal regulatory limit of 5.0 mg/L for lead. Consequently, this waste would be classified as hazardous due to the toxicity characteristic. Generators must then manage this waste according to the applicable Idaho hazardous waste regulations, which include requirements for accumulation, manifesting, transportation, and disposal at permitted treatment, storage, and disposal facilities (TSDFs). This determination process ensures that wastes posing a significant risk to human health and the environment are properly managed, regardless of whether they are specifically listed.

Idaho’s Hazardous Waste Management Act, specifically referencing the Idaho Department of Environmental Quality’s (IDEQ) regulations, addresses the management of hazardous waste from its generation to its final disposal. A key aspect of this is the requirement for generators to properly identify and characterize their hazardous waste. This characterization is crucial for determining the appropriate management standards, including storage, transportation, and disposal requirements. Idaho’s regulations, largely mirroring the federal Resource Conservation and Recovery Act (RCRA), mandate that generators determine if their waste exhibits any of the characteristics of hazardous waste: ignitability, corrosivity, reactivity, or toxicity. If a waste is not a listed hazardous waste, the generator must conduct testing or use knowledge of the waste to make this determination. For a waste to be considered hazardous due to toxicity, it must leach hazardous constituents above regulatory limits when subjected to a specific testing procedure. The Toxicity Characteristic Leaching Procedure (TCLP) is the standard method used for this purpose. If a waste fails TCLP for any of the regulated constituents, it is classified as a hazardous waste. This classification then dictates subsequent handling, manifesting, and disposal at permitted facilities. Understanding the generator’s responsibility in waste characterization, including the application of TCLP, is fundamental to compliance with Idaho’s hazardous waste laws. The scenario presented requires the generator to assess if their waste, exhibiting a pH of 1.5, would be classified as hazardous. According to both federal RCRA and Idaho’s equivalent regulations, 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. Since the waste has a pH of 1.5, it clearly meets the criteria for corrosivity. Therefore, the generator must manage it as a hazardous waste.

Idaho’s Hazardous Waste Management Act, primarily administered through the Idaho Department of Environmental Quality (IDEQ), establishes a framework for the generation, transportation, treatment, storage, and disposal of hazardous waste. A key aspect of this framework involves the classification of waste and the associated regulatory responsibilities. Idaho follows the federal Resource Conservation and Recovery Act (RCRA) definitions and classifications, but also has specific state provisions. For a facility generating hazardous waste, understanding the point at which a waste stream becomes regulated is crucial. This determination is often based on whether the waste exhibits a characteristic of hazardous waste (ignitability, corrosivity, reactivity, or toxicity) or if it is a listed hazardous waste. Idaho Administrative Code (IAC) 37.01.01 defines these characteristics and lists specific wastes. The concept of “cradle-to-grave” management, also derived from RCRA, means that the generator retains responsibility for the waste from its creation until its final, safe disposal. This includes ensuring proper manifesting, choosing permitted treatment, storage, and disposal facilities (TSDFs), and maintaining records. The Idaho Hazardous Waste Management Act and its implementing regulations aim to protect public health and the environment by ensuring that hazardous wastes are managed in a manner that minimizes their potential to cause harm. The specific regulations, such as those found in IAC Title 37, Chapter 01, detail requirements for generators, transporters, and TSDFs, including permitting, operational standards, and closure requirements. The question probes the understanding of when a waste becomes subject to these stringent management requirements under Idaho law.

The Idaho Department of Environmental Quality (IDEQ) oversees hazardous waste management within the state, aligning with the federal Resource Conservation and Recovery Act (RCRA). When a facility generates hazardous waste, it must first determine if it qualifies as a hazardous waste under Idaho’s regulations, which mirror federal definitions. This determination involves checking if the waste is specifically listed by the Environmental Protection Agency (EPA) or if it exhibits hazardous characteristics: ignitability, corrosivity, reactivity, or toxicity. If the waste is determined to be hazardous, the generator must obtain an EPA identification number. The generator’s status (e.g., large quantity generator, small quantity generator) dictates specific storage, record-keeping, and reporting requirements. For instance, large quantity generators have more stringent accumulation time limits and manifest requirements. The manifest system is a crucial tracking document that accompanies hazardous waste from its point of generation to its final disposal, ensuring accountability and proper management throughout the transportation and treatment process. Failure to comply with these regulations can result in significant penalties. The question asks about the initial step a facility in Idaho must take upon discovering it has generated a waste material that might be hazardous. This initial step is the formal determination of whether the waste meets the criteria for being classified as hazardous under the applicable regulations.

Idaho’s Hazardous Waste Management Act, primarily administered by the Idaho Department of Environmental Quality (IDEQ), establishes a framework for the safe management of hazardous waste. A key aspect of this framework involves the identification and tracking of hazardous waste from its generation to its final disposal. The Uniform Hazardous Waste Manifest system, as adopted and implemented in Idaho, serves as a crucial tracking document. This manifest accompanies hazardous waste shipments, providing essential information about the waste, its generator, transporter, and designated treatment, storage, and disposal facility (TSDF). The manifest is a multi-part document that is signed by each party involved in the transportation and receipt of the waste. Generators are responsible for initiating the manifest, ensuring it is completed accurately, and retaining a copy. Transporters are responsible for carrying the manifest during transit and obtaining signatures. TSDFs are responsible for receiving the manifest, signing it upon receipt of the waste, and returning a signed copy to the generator. Idaho, like other states, has specific requirements regarding the timeframe for the generator to receive the signed manifest back from the designated TSDF. This timeframe is designed to ensure that the waste has reached its intended destination and that the generator is relieved of cradle-to-grave liability for that specific shipment. If the signed manifest is not returned within the prescribed period, the generator is obligated to investigate the discrepancy and report it to the regulatory authority. This process is vital for accountability and to prevent illegal dumping or mismanagement of hazardous waste. The regulations specify a period of 35 days from the date the waste was accepted by the initial transporter for the generator to receive the signed manifest back. If, after 30 days from the shipment date, the generator has not received the signed manifest, they must initiate a follow-up inquiry. If the manifest is still not received by the 35-day mark, the generator must report the missing manifest to the IDEQ.

The Idaho Department of Environmental Quality (IDEQ) regulates hazardous waste management under the authority of the Idaho Hazardous Waste Management Act, which largely mirrors the federal Resource Conservation and Recovery Act (RCRA). A critical aspect of this regulation involves the identification and management of hazardous wastes. Idaho Administrative Code (IAC) Rule 37.01.01, specifically sections pertaining to hazardous waste identification, outlines the criteria and procedures for determining if a solid waste is a hazardous waste. This includes both listed wastes and characteristic wastes. Characteristic wastes are those that exhibit one or more of the four hazardous characteristics: ignitability, corrosivity, reactivity, and toxicity. The toxicity characteristic is determined by the Toxicity Characteristic Leaching Procedure (TCLP). If a waste fails the TCLP for any of the regulated constituents, it is classified as a hazardous waste. Idaho’s regulations also address generator status, which is determined by the amount of hazardous waste generated per month. Small Quantity Generators (SQGs) have specific requirements that differ from Large Quantity Generators (LQGs). For instance, SQGs in Idaho are generally permitted to store hazardous waste for up to 180 days, or up to 270 days if the waste must be transported over 200 miles, without an interim permit, provided they meet certain conditions. This contrasts with LQGs, who have stricter storage time limits and more comprehensive management requirements. The question focuses on the permissible storage duration for a generator that falls under the Small Quantity Generator category within Idaho, assuming the waste is destined for off-site treatment and disposal and the transport distance is within the specified limit. The Idaho regulations, aligning with federal RCRA, allow SQGs to accumulate hazardous waste on-site for up to 180 days without a permit.

The Idaho Department of Environmental Quality (IDEQ) regulates hazardous waste management under the authority of the Idaho Hazardous Waste Management Act (IDAPA 37.01.01). This act establishes a comprehensive framework for the identification, generation, transportation, treatment, storage, and disposal of hazardous wastes within the state. A key aspect of this regulation is the definition of hazardous waste itself, which is largely aligned with federal definitions under the Resource Conservation and Recovery Act (RCRA). However, Idaho may have specific provisions or interpretations that are unique to the state. For instance, the state may have additional criteria for waste characterization or specific requirements for certain waste streams generated within Idaho’s unique industrial landscape. Understanding the generator status thresholds is crucial, as these determine the regulatory obligations a facility must adhere to. Small Quantity Generators (SQGs) in Idaho, as in federal regulations, are subject to less stringent requirements than Large Quantity Generators (LQGs). Specifically, SQGs are generally limited in the amount of hazardous waste they can accumulate on-site at any given time and must manage their waste within a 180-day period, with a possible extension to 270 days if the waste must be transported over 200 miles. The notification requirements for SQGs typically involve providing basic information about their hazardous waste activities to the state regulatory agency. The specific quantity limits for SQGs are defined in the regulations. For most hazardous wastes, an SQG is a generator who generates between 100 and 1,000 kilograms (approximately 220 to 2,200 pounds) of hazardous waste per month. This question probes the understanding of these specific quantity thresholds that define a generator’s status in Idaho, which directly impacts their compliance obligations.

Idaho’s Hazardous Waste Management Act, administered by the Idaho Department of Environmental Quality (IDEQ), aligns with the federal Resource Conservation and Recovery Act (RCRA). A key aspect of this legislation is the definition and management of hazardous waste. Idaho Administrative Code (IAC) 37.01.01 defines hazardous waste broadly, encompassing discarded materials that exhibit certain characteristics or are listed by the EPA or the state. Characteristic wastes, defined in IAC 37.01.01.003, include ignitability, corrosivity, reactivity, and toxicity. Toxicity is determined through the Toxicity Characteristic Leaching Procedure (TCLP). Listed wastes, found in IAC 37.01.01.002, are specific wastes from non-specific sources (F-list), source-specific industrial processes (K-list), discarded commercial chemical products (P-list and U-list), and specific wastes from the oil and gas industry (D-list). Idaho’s regulations, like RCRA, require generators to identify if their waste is hazardous. This involves checking if the waste is specifically listed or if it exhibits any of the four characteristics. If a waste is not listed and does not exhibit any of the characteristics, it is considered non-hazardous. The generator bears the primary responsibility for this determination. For instance, a waste solvent used in a manufacturing process in Boise, Idaho, would need to be evaluated against the F-list for spent solvents or the D-list for toxicity characteristics if it contains certain regulated constituents above specified TCLP limits. If the solvent is a spent solvent from a non-specific source and is not listed, but it ignites at a temperature below 60 degrees Celsius, it would be classified as ignitable hazardous waste. The proper management, including storage, transportation, and disposal, then follows based on this classification.