The Oklahoma Department of Environmental Quality (ODEQ) is responsible for administering and enforcing hazardous waste regulations within the state. Under the Oklahoma Hazardous Waste Management Act, specifically referencing the authority granted by Title 27A of the Oklahoma Statutes, ODEQ can issue various types of administrative orders to ensure compliance with hazardous waste laws. These orders are a critical enforcement tool. An administrative order on consent is a voluntary agreement between ODEQ and a potentially responsible party (PRP) to address a hazardous waste issue. This type of order is negotiated and signed by both parties, outlining specific actions, timelines, and responsibilities for remediation or compliance. It typically involves a period for public comment before becoming final. In contrast, an administrative compliance order is typically issued unilaterally by ODEQ when a violation is identified, mandating specific corrective actions and deadlines. A consent decree is a formal settlement that is entered by a court, usually involving more complex or significant cases where a judicial order is required to enforce the terms. A notice of violation is a preliminary communication informing a party of a suspected infraction, often preceding a more formal order. Therefore, when a facility agrees to undertake corrective actions to address a release of hazardous waste at a site, and this agreement is formalized through a negotiated document signed by both the facility and the state agency, it represents an administrative order on consent, reflecting a collaborative approach to environmental protection within Oklahoma’s regulatory framework.

The Oklahoma Hazardous Waste Management Act, specifically Title 27A of the Oklahoma Statutes, and its accompanying administrative rules promulgated by the Oklahoma Department of Environmental Quality (ODEQ), establish a framework for the identification, management, and disposal of hazardous waste within the state. A critical aspect of this framework is the definition of “hazardous waste” itself. Oklahoma’s definition, largely mirroring the federal Resource Conservation and Recovery Act (RCRA), includes wastes that exhibit certain characteristics of hazardousness or are listed as hazardous. The characteristic wastes are ignitability, corrosivity, reactivity, and toxicity. Toxicity is often determined through the Toxicity Characteristic Leaching Procedure (TCLP). Wastes listed as hazardous are those specifically identified by the ODEQ or the U.S. Environmental Protection Agency (EPA) due to their known or potential harm to human health or the environment. Facilities generating, transporting, treating, storing, or disposing of hazardous waste must comply with stringent permitting, record-keeping, and operational standards. The question tests the understanding of what constitutes hazardous waste under Oklahoma law, focusing on the broader categories rather than specific chemical constituents or regulatory thresholds, which are detailed in separate sections of the regulations. The core principle is that a waste is hazardous if it meets either the characteristic or listed criteria, or both. Therefore, a waste exhibiting any of the defined hazardous characteristics or appearing on a designated list is considered hazardous waste under Oklahoma’s regulatory scheme.

The Oklahoma Department of Environmental Quality (ODEQ) is the primary regulatory body for hazardous waste management in Oklahoma, operating under authority delegated from the U.S. Environmental Protection Agency (EPA) through the Resource Conservation and Recovery Act (RCRA). Generators of hazardous waste are classified based on the quantity of hazardous waste produced per month. A Very Small Quantity Generator (VSQG) is defined as a generator who produces no more than 100 kilograms (approximately 220 pounds) of hazardous waste per month. Small Quantity Generators (SQGs) produce between 100 and 1,000 kilograms per month, and Large Quantity Generators (LQGs) produce 1,000 kilograms or more per month. The regulatory requirements, including manifest requirements, storage limits, and personnel training, vary significantly depending on the generator category. For instance, VSQGs have the least stringent requirements, often being allowed to dispose of their hazardous waste at a municipal solid waste landfill if it is not specifically prohibited. SQGs have more stringent storage and manifest requirements than VSQGs, while LQGs face the most comprehensive regulations, including detailed record-keeping, biennial reporting, and specific contingency plans. Understanding these distinctions is crucial for compliance with Oklahoma’s hazardous waste regulations, which are largely aligned with federal RCRA standards but may include state-specific nuances or additional requirements. The classification directly impacts the operational procedures and legal obligations of any entity generating hazardous waste within the state.

The Oklahoma Administrative Code (OAC) Title 310, Chapter 265, specifically addresses the management of hazardous waste. Section 310:265-1-2 defines “generator” as any person, by site, whose act or process produces hazardous waste identified or listed in OAC 310:265, or whose act or process produces a hazardous waste which is a new waste stream. The question concerns a facility in Oklahoma that produces a waste stream not previously classified as hazardous. The critical factor in determining if this new waste stream is subject to hazardous waste regulations under Oklahoma law is whether it exhibits any of the characteristics of hazardous waste as defined in OAC 310:265-3-1, or if it is a listed hazardous waste under OAC 310:265-4. The mere fact that a waste is “newly discovered” or “not previously classified” does not exempt it. The generator’s responsibility is to determine if the waste meets the definition of hazardous waste, which involves testing or knowledge of the process. Therefore, the generator must determine if the waste exhibits ignitability, corrosivity, reactivity, or toxicity, or if it falls under a listed waste category.

The Oklahoma Department of Environmental Quality (ODEQ) implements the Hazardous Waste Management Act, which is largely based on the federal Resource Conservation and Recovery Act (RCRA). Under these regulations, facilities that generate, transport, treat, store, or dispose of hazardous waste must comply with specific requirements. A key aspect of compliance involves manifest system requirements for tracking hazardous waste from its point of generation to its final disposal. The manifest is a crucial document that accompanies hazardous waste shipments and serves as a record of its management. The generator is responsible for ensuring the manifest is properly completed and signed by all parties involved in the transportation and disposal process. If a generator receives a manifest back from the designated treatment, storage, and disposal facility (TSDF) indicating that the waste was not received, they must investigate the discrepancy. This investigation involves contacting the transporter and the TSDF to determine the status of the shipment. If the waste cannot be accounted for within a specified timeframe, the generator must report this information to the ODEQ. The regulations, such as those found in Oklahoma Administrative Code (OAC) Title 310, Chapter 266, outline the procedures for handling such discrepancies and the reporting obligations of generators. This proactive approach ensures accountability within the hazardous waste management system and helps prevent illegal dumping or mismanagement of hazardous materials.

The Oklahoma Department of Environmental Quality (ODEQ) administers the state’s hazardous waste program, which is primarily authorized under the Resource Conservation and Recovery Act (RCRA) as implemented by Oklahoma Administrative Code (OAC) Title 310, Chapter 265, Hazardous Waste Management. This chapter details the requirements for hazardous waste generators, transporters, and treatment, storage, and disposal facilities (TSDFs). Specifically, OAC 310:265-1-2 defines “generator” as any person, by site, whose act or process produces hazardous waste or whose act first causes a waste to become subject to hazardous waste regulation. OAC 310:265-5-1 establishes generator status based on the quantity of hazardous waste generated per calendar month. A large quantity generator (LQG) is defined as a generator who generates in a calendar month or accumulates at any time 1,000 kilograms (kg) or more of hazardous waste, or 1 kilogram (kg) or more of acute hazardous waste. A small quantity generator (SQG) generates more than 100 kg but less than 1,000 kg of hazardous waste per month. A conditionally exempt small quantity generator (CESQG) generates 100 kg or less of hazardous waste per month, or 1 kg or less of acute hazardous waste per month. The question asks about the regulatory status of a facility generating 950 kg of hazardous waste and 2 kg of acute hazardous waste in a month. Since the facility generates 950 kg of hazardous waste, it exceeds the 100 kg threshold for SQG status. Furthermore, it generates 2 kg of acute hazardous waste, which exceeds the 1 kg threshold for acute hazardous waste that defines a CESQG and moves it into SQG or LQG status. Therefore, the generation of 2 kg of acute hazardous waste alone would classify the facility as at least a small quantity generator, and the combined generation of 950 kg of hazardous waste and 2 kg of acute hazardous waste clearly places it beyond the CESQG category. The critical factor here is the generation of acute hazardous waste exceeding 1 kg, which mandates a higher generator status than CESQG. The 950 kg of non-acute hazardous waste further solidifies this, as it exceeds the 100 kg threshold for SQG but is below the 1,000 kg threshold for LQG. Thus, the facility is classified as a small quantity generator.

The Oklahoma Department of Environmental Quality (ODEQ) administers hazardous waste regulations within the state, largely mirroring the federal Resource Conservation and Recovery Act (RCRA) but with potential state-specific nuances. A facility generating hazardous waste that is not a small quantity generator (SQG) or a conditionally exempt small quantity generator (CESQG) is classified as a large quantity generator (LQG). LQGs have specific requirements for waste accumulation, manifesting, and record-keeping. One critical aspect for LQGs is the maximum amount of hazardous waste they can accumulate on-site without obtaining a full hazardous waste treatment, storage, and disposal facility (TSDF) permit. Under RCRA regulations, which Oklahoma typically adopts, an LQG can accumulate hazardous waste on-site for up to 90 days. During this 90-day period, the waste must be stored in containers or tanks that meet specific design and operating standards. The generator must also have a contingency plan and emergency procedures in place. Beyond 90 days, the waste must either be shipped off-site to a permitted TSDF or the generator must obtain a TSDF permit. The concept of “on-site accumulation time” is a fundamental regulatory limit designed to prevent generators from becoming de facto storage facilities without the proper permitting and oversight. This 90-day limit is a cornerstone of hazardous waste management for LQGs, ensuring timely off-site management or proper on-site permitted management.

The Oklahoma Hazardous Waste Management Act, specifically Title 27A of the Oklahoma Statutes, and its accompanying administrative rules, primarily found in the Oklahoma Administrative Code (OAC) 310:260, govern the management of hazardous waste within the state. A critical aspect of this regulatory framework is the definition of hazardous waste and the responsibilities placed upon generators. The Act defines hazardous waste based on characteristics (ignitability, corrosivity, reactivity, toxicity) and specific listings. Generators are categorized based on the amount of hazardous waste they produce monthly. 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 per month. Very Small Quantity Generators (VSQGs) produce 100 kilograms or less per month. Each category has distinct regulatory requirements concerning storage, record-keeping, personnel training, and emergency preparedness. The question probes the understanding of these generator categories and their associated regulatory obligations under Oklahoma law, which are largely harmonized with federal Resource Conservation and Recovery Act (RCRA) regulations but may have state-specific nuances. The scenario describes a facility that consistently generates 950 kilograms of hazardous waste per month, along with 50 kilograms of acutely hazardous waste per month. Acutely hazardous waste is subject to stricter management standards and is often counted at a higher rate for generator status determination. Under both federal RCRA and Oklahoma’s adopted regulations, the threshold for VSQG status is 100 kg of hazardous waste per month. For SQG status, the threshold is between 100 and 1,000 kg per month. However, when a generator accumulates any amount of acutely hazardous waste (listed as “H-listed” waste), they are classified as an LQG if they accumulate 1 kg or more of acutely hazardous waste in a calendar month, regardless of the quantity of non-acutely hazardous waste generated. In this scenario, the facility generates 50 kilograms of acutely hazardous waste per month. This quantity of acutely hazardous waste alone, even if the total hazardous waste were below 100 kg, would immediately classify the facility as a Large Quantity Generator under the stringent management standards applicable to such waste. Therefore, the facility’s monthly generation of 50 kg of acutely hazardous waste, combined with 950 kg of non-acutely hazardous waste, places it squarely within the Large Quantity Generator category. The total hazardous waste generated is 1000 kg, but the presence of acutely hazardous waste is the determinative factor for this classification, triggering the most stringent regulatory requirements.

Oklahoma’s Hazardous Waste Management Act, specifically the regulations promulgated thereunder by the Oklahoma Department of Environmental Quality (ODEQ), establishes a framework for the management of hazardous waste. A key aspect of this framework involves the definition of hazardous waste itself. Under Oklahoma Administrative Code (OAC) 310:240-1-2, “hazardous waste” is defined as a waste that exhibits one or more of the characteristics of hazardous waste, or is listed by the Administrator of the U.S. Environmental Protection Agency (EPA) as a hazardous waste, or is identified as hazardous waste by the ODEQ. The characteristics of hazardous waste, as outlined in OAC 310:240-3-2, include ignitability, corrosivity, reactivity, and toxicity. A waste is considered toxic if it has a toxicity characteristic, determined by the Toxicity Characteristic Leaching Procedure (TCLP) outlined in OAC 310:240-3-2(c). If a waste exhibits any of these characteristics or is specifically listed as hazardous by federal or state regulation, it is regulated as hazardous waste. The question tests the understanding of how a waste material is classified as hazardous under Oklahoma law, focusing on the characteristic versus listed waste distinction and the role of the TCLP test in determining toxicity.

Oklahoma’s hazardous waste regulations, primarily found within the Oklahoma Administrative Code (OAC) Title 310, Chapter 266, and often mirroring federal Resource Conservation and Recovery Act (RCRA) provisions, establish stringent requirements for the management of hazardous waste. A key aspect of these regulations pertains to the classification and management of wastes that exhibit hazardous characteristics. When a solid waste is generated, the generator must determine if it is a hazardous waste. This determination involves a two-step process: first, checking if the waste is specifically listed as hazardous by the Oklahoma Department of Environmental Quality (ODEQ) or the U.S. Environmental Protection Agency (EPA). If it is not a listed waste, the generator must then assess 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), as outlined in OAC 310:266-1-4 and 40 CFR Part 261, Subpart C. If the TCLP analysis for any of the specified contaminants exceeds the regulatory threshold, the waste is classified as hazardous due to toxicity. For instance, if a waste sample, when subjected to the TCLP, yields a leachate concentration of lead at 7 mg/L, this concentration exceeds the regulatory limit of 5 mg/L for lead under the toxicity characteristic. Therefore, this waste would be managed as a hazardous waste. The regulations also address specific exemptions or variances that might apply under certain conditions, but the default pathway for unlisted wastes is characteristic determination. The generator bears the ultimate responsibility for making this accurate classification and managing the waste accordingly, which includes proper storage, transportation, and disposal at a permitted facility.

The Oklahoma Department of Environmental Quality (ODEQ) oversees hazardous waste management under the framework of the Resource Conservation and Recovery Act (RCRA) and its state-specific implementing regulations. A key aspect of this framework involves the proper identification and management of hazardous waste, particularly concerning the concept of “derived-from” and “mixture” rules. The derived-from rule, as codified in federal regulations and adopted by Oklahoma, states that any solid waste generated from the treatment, storage, or disposal of a hazardous waste is also a hazardous waste, unless it meets specific exclusion criteria. Similarly, the mixture rule posits that a solid waste mixed with a listed hazardous waste is also considered a hazardous waste, unless the mixture is specifically excluded. Consider a scenario where a facility in Oklahoma generates a process waste stream (Waste A) that is a listed hazardous waste, specifically K048 (dissolved air flotation float from petroleum refining wastewater treatment). This Waste A is then used as a reagent in a secondary process, and the resulting byproduct is Waste B. Under the derived-from rule, Waste B, being generated from the treatment of a hazardous waste (Waste A), would be presumed to be hazardous. However, if Waste B is a non-hazardous solid waste that is *only* hazardous because it contains Waste A, and Waste A itself is not a listed waste that is also a commercial chemical product or an intermediate in the production of a commercial chemical product (i.e., it’s not an “acutely hazardous” waste that would trigger specific management requirements even in a mixture), then Waste B might be eligible for an exemption from certain hazardous waste management requirements if it is subsequently treated to remove the hazardous characteristic or if it meets specific land disposal restrictions (LDR) treatment standards. However, the question asks about a scenario where Waste A (K048) is mixed with a non-hazardous solid waste (Waste C) to create Waste B. In this case, the mixture rule would apply. Since Waste A is a listed hazardous waste, any mixture of Waste A with another solid waste (Waste C) is also considered a hazardous waste, unless the mixture is specifically delisted or meets certain treatment standards. The question implies that Waste B is being managed as a solid waste. The critical factor here is that Waste A is a listed hazardous waste. Oklahoma’s regulations, mirroring federal RCRA, treat mixtures of listed hazardous wastes with non-hazardous solid wastes as hazardous unless specific exemptions apply. These exemptions are typically tied to delisting petitions or demonstrating that the hazardous constituent has been treated to below regulatory thresholds. Without such a demonstration or delisting, the mixture retains its hazardous classification. Therefore, Waste B, being a mixture containing K048, is classified as hazardous. The question then asks about the management of Waste B. If Waste B is characterized and determined to be a hazardous waste, it must be managed in accordance with Oklahoma’s hazardous waste regulations, which include manifesting, storage limitations, and disposal at permitted facilities. The key principle is that the hazardous characteristic of the listed waste persists in the mixture unless specifically removed or exempted. No calculation is required for this question as it tests understanding of regulatory principles.

The Oklahoma Department of Environmental Quality (ODEQ) implements regulations that align with the federal Resource Conservation and Recovery Act (RCRA). Under these regulations, a generator is classified based on the quantity of hazardous waste produced per month. Small Quantity Generators (SQGs) are defined as those who generate between 100 and 1,000 kilograms of hazardous waste per month, or less than 1 kilogram of acute hazardous waste per month. Large Quantity Generators (LQGs) are those who generate 1,000 kilograms or more of hazardous waste per month, or more than 1 kilogram of acute hazardous waste per month. Conditionally Exempt Small Quantity Generators (CESQGs), now often referred to as Very Small Quantity Generators (VSQGs), are those who generate 100 kilograms or less of hazardous waste per month, and less than 1 kilogram of acute hazardous waste per month. This classification dictates the specific management, storage, and reporting requirements applicable to the entity. For instance, LQGs face the most stringent requirements, including biennial reporting and more rigorous personnel training. SQGs have intermediate requirements, and VSQGs have the least stringent, often being able to dispose of their waste at municipal solid waste landfills under certain conditions. The scenario describes a facility in Oklahoma that consistently produces 850 kilograms of hazardous waste per month, with no mention of acute hazardous waste. Based on the established quantity thresholds, this facility falls within the definition of a Small Quantity Generator.

The Oklahoma Department of Environmental Quality (ODEQ) implements the Resource Conservation and Recovery Act (RCRA) within the state. RCRA establishes a framework for managing hazardous waste from its generation to its final disposal. A key aspect of this management is the identification and tracking of hazardous waste. The generator of hazardous waste is responsible for determining if their waste is hazardous. This determination is made by comparing the waste against listed hazardous wastes or by testing the waste for characteristic hazardous properties: ignitability, corrosivity, reactivity, and toxicity. If a waste exhibits any of these characteristics or is specifically listed, it is considered hazardous. Oklahoma’s regulations, often mirroring federal standards but potentially with state-specific nuances, require generators to obtain an EPA identification number if they generate hazardous waste above certain thresholds, manifest shipments of hazardous waste, and comply with storage and record-keeping requirements. The scenario describes a facility in Oklahoma that generates a waste stream. The initial step in regulatory compliance for this waste stream, assuming it is not explicitly listed as hazardous by ODEQ or EPA, is to assess its characteristics. If, through testing or knowledge of the process, the waste is found to be ignitable, corrosive, reactive, or toxic, it must be managed as hazardous waste. This management includes proper containerization, labeling, storage limits, and preparation for transport by a licensed hazardous waste transporter to a permitted treatment, storage, or disposal facility (TSDF). The core principle is that the generator bears the initial and ongoing responsibility for the proper characterization and management of their waste. The question tests the understanding of the initial regulatory trigger for hazardous waste management in Oklahoma.

The Oklahoma Department of Environmental Quality (ODEQ) oversees hazardous waste management within the state. Under the Oklahoma Hazardous Waste Management Act and its implementing regulations, specifically referencing the Oklahoma Administrative Code (OAC) Title 310, Chapter 265, facilities that generate hazardous waste are subject to specific requirements for waste characterization and management. A generator must determine if their waste is hazardous. This determination process involves consulting the list of hazardous wastes (listed wastes) and evaluating the waste against the characteristics of hazardous waste (ignitable, corrosive, reactive, or toxic). If a waste exhibits any of these characteristics, or is a listed hazardous waste, it is subject to the regulations. The regulations require generators to maintain records of their hazardous waste determinations. For a facility in Oklahoma that generates a waste exhibiting the characteristic of toxicity, as defined by the criteria outlined in OAC 310:265-11-2, and that waste is not specifically excluded or exempted by state or federal law, the generator must manage it in accordance with the applicable generator status requirements, which could include obtaining an EPA identification number and complying with storage, manifest, and disposal requirements. The scenario describes a waste that, through testing, exhibits a characteristic that aligns with the definition of hazardous waste under Oklahoma’s regulatory framework. Therefore, the generator’s responsibility is to manage this waste according to the stringent provisions for hazardous waste.

The Oklahoma Department of Environmental Quality (ODEQ) administers the state’s hazardous waste program, which is primarily authorized under the Oklahoma Hazardous Waste Management Act. This act aligns with and implements the federal Resource Conservation and Recovery Act (RCRA) within Oklahoma. When a generator discovers they have accumulated hazardous waste beyond the regulatory time limits, they are considered to be in violation of the accumulation time limits. The immediate corrective action required is to either arrange for the proper off-site management of the excess hazardous waste or to obtain a permit or variance from ODEQ that would allow for continued on-site accumulation under specific conditions. Failure to do so promptly can lead to further enforcement actions. The discovery of excess accumulation is not a self-implementing exemption from the accumulation time limits. Furthermore, while reporting the discovery to ODEQ is a necessary step in addressing the violation, it does not, by itself, resolve the issue of exceeding the accumulation period. The core requirement is to rectify the physical situation of exceeding the storage limits.

The Oklahoma Department of Environmental Quality (ODEQ) implements the Hazardous Waste Management Act, which aligns with the federal Resource Conservation and Recovery Act (RCRA). Under these regulations, facilities that generate hazardous waste are classified based on the quantity of hazardous waste produced per month. These classifications determine the specific management standards that apply to the facility. A conditionally exempt small quantity generator (CESQG) is defined as a generator who generates no more than 100 kilograms (approximately 220 pounds) of hazardous waste per month, or no more than 1 kilogram of acute hazardous waste per month, and generates no more than 100 kilograms of residue from the treatment, storage, or disposal of acute hazardous waste per month. If a facility exceeds any of these thresholds, it is reclassified to a higher generator category, such as a small quantity generator (SQG) or a large quantity generator (LQG), which imposes more stringent regulatory requirements. The scenario describes a facility that, in a particular month, generated 120 kilograms of hazardous waste. This quantity exceeds the 100-kilogram threshold for CESQGs. Therefore, for that specific month, the facility would be considered a small quantity generator, subject to the regulations applicable to SQGs, not CESQGs.

The Oklahoma Department of Environmental Quality (ODEQ) regulates hazardous waste management within the state. Under the Oklahoma Hazardous Waste Management Act, facilities that generate, treat, store, or dispose of hazardous waste must comply with specific manifesting requirements. A hazardous waste manifest is a crucial document that tracks hazardous waste from its point of generation to its final disposal. This document serves as proof of proper management and accountability throughout the waste’s lifecycle. The manifest must accompany the waste shipment at all times. When a hazardous waste transporter picks up a shipment, they sign the manifest to acknowledge receipt. Upon delivery to a permitted treatment, storage, or disposal facility (TSDF), the TSDF also signs the manifest, confirming receipt of the waste. The original manifest is then typically returned to the generator by the TSDF. This chain of custody is vital for ensuring that hazardous waste is managed in accordance with federal Resource Conservation and Recovery Act (RCRA) regulations, as adopted and potentially supplemented by Oklahoma state law. Failure to maintain proper manifesting can result in significant penalties. The manifest’s purpose is to provide a cradle-to-grave tracking system, ensuring that the generator remains responsible for the waste until it is properly managed. This includes verifying that the waste reaches a legitimate and permitted facility.

Oklahoma’s Hazardous Waste Management Act, specifically the regulations promulgated thereunder by the Oklahoma Department of Environmental Quality (ODEQ), addresses the management of hazardous waste from generation to final disposal. A critical aspect of this regulatory framework involves the identification and management of hazardous wastes that exhibit characteristics of ignitability, corrosivity, reactivity, or toxicity. The Toxicity Characteristic Leaching Procedure (TCLP) is a standard laboratory test used to determine if a waste exhibits the characteristic of toxicity. This procedure simulates the leaching that occurs when waste is disposed of in a landfill. If the leachate from a waste sample, when analyzed using TCLP, contains any of the specified contaminants at or above regulatory thresholds, the waste is classified as a hazardous waste. For example, if a waste sample, when subjected to the TCLP, yields a leachate concentration of lead at \(7.0 \text{ mg/L}\), this would exceed the regulatory limit of \(5.0 \text{ mg/L}\) for lead, thus classifying the waste as hazardous due to toxicity. This classification triggers stringent management requirements under Oklahoma law, including manifesting, record-keeping, and disposal at permitted hazardous waste facilities. The intent is to prevent the release of toxic constituents into the environment, protecting groundwater and public health. Understanding the TCLP and its application is fundamental for any entity generating or managing potentially hazardous waste in Oklahoma. The specific characteristic that would be identified in this scenario is toxicity, as defined by the regulatory limits for leachable contaminants.

The Oklahoma Department of Environmental Quality (ODEQ) 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 its generation to its final disposal, often referred to as “cradle-to-grave” management. Facilities that treat, store, or dispose of hazardous waste must obtain a permit. The permit process involves a thorough review of the facility’s operations, safety procedures, and environmental impact. The Hazardous Waste Facility Permit Regulations, found within the Oklahoma Administrative Code (OAC) Title 310, Chapter 266, detail the requirements for obtaining and maintaining these permits. These regulations address aspects such as waste analysis, personnel training, contingency plans, and record-keeping. Specifically, OAC 310:266-1-3 defines a “permit-by-rule” as a permit granted to a facility that meets specific criteria and operates in compliance with certain regulations without the need for a formal, site-specific permit application and issuance process. This mechanism is designed for certain types of facilities or waste management activities that are deemed to pose a lower risk when conducted under strict conditions. For instance, a facility that generates less than 1,000 kilograms of hazardous waste per month and stores it on-site for no more than 90 days might qualify for a permit-by-rule if it adheres to specific storage and management standards outlined in the regulations. The intent is to streamline regulatory oversight for low-risk activities while ensuring environmental protection. Therefore, a facility that meets the stringent criteria for a permit-by-rule is considered to have a permit for its hazardous waste management activities under Oklahoma law, provided it continuously complies with the stipulated conditions.

The Oklahoma Department of Environmental Quality (ODEQ) has specific regulations for the management of hazardous waste, mirroring federal requirements under the Resource Conservation and Recovery Act (RCRA). When a generator of hazardous waste ceases operations in Oklahoma, they must manage their remaining hazardous waste according to these regulations. This includes proper identification, storage, treatment, and disposal. For a generator that has ceased operations, the primary concern is the proper closure of their hazardous waste management activities and the ultimate disposition of any remaining hazardous waste. This involves ensuring that all hazardous waste is managed in a way that protects human health and the environment. The Oklahoma Administrative Code (OAC) Title 310, Chapter 266, which governs hazardous waste management, outlines the requirements for generators, including those that are closing. Specifically, OAC 310:266-1-3 defines “generator” and OAC 310:266-3-1 through OAC 310:266-3-7 detail generator responsibilities, including waste determination, accumulation, and manifest requirements. When a facility closes, the responsibility shifts to ensuring that any remaining hazardous waste is either treated and disposed of properly at a permitted facility or managed in a manner that meets closure requirements. The closure plan itself, as mandated by OAC 310:266-11-1, would detail how any remaining hazardous waste is to be handled. Therefore, the most appropriate action for a generator ceasing operations with remaining hazardous waste is to ensure it is managed in accordance with the closure requirements of OAC 310:266-11, which would necessitate its proper transportation and disposal at a permitted treatment, storage, and disposal facility (TSDF).

The Oklahoma Department of Environmental Quality (ODEQ) implements the Hazardous Waste Management Act, which is largely based on the federal Resource Conservation and Recovery Act (RCRA). A key aspect of this act involves the identification and management of hazardous wastes. Oklahoma Administrative Code (OAC) 310:260-1-2 defines “hazardous waste” by incorporating by reference the criteria and definitions found in 40 CFR Part 261. This federal regulation establishes the characteristics of hazardous waste (ignitability, corrosivity, reactivity, and toxicity) and lists specific wastes deemed hazardous. For a waste to be regulated as hazardous under Oklahoma law, it must either exhibit one of these characteristics or be listed by the U.S. Environmental Protection Agency (EPA) or the ODEQ. The scenario describes a waste exhibiting a characteristic of corrosivity, specifically having a pH below 2. This characteristic, as defined in 40 CFR \$261.22, directly classifies the waste as hazardous. Therefore, the generator of this waste must comply with all applicable hazardous waste regulations in Oklahoma, including obtaining an EPA identification number, following manifest requirements for transportation, and ensuring proper treatment, storage, or disposal. The presence of a specific RCRA characteristic is sufficient for regulatory classification.

The Oklahoma Department of Environmental Quality (ODEQ) has specific regulations regarding the management of hazardous waste, particularly concerning the generation and accumulation of such waste. Under Oklahoma Administrative Code (OAC) Title 310, Chapter 266, hazardous waste generators are subject to requirements based on the quantity of hazardous waste they produce per month. Small Quantity Generators (SQGs) are defined as those generating between 100 kilograms (kg) and 1,000 kg of hazardous waste per month, or less than 1 kg of acutely hazardous waste per month. Large Quantity Generators (LQGs) generate 1,000 kg or more of hazardous waste per month, or more than 1 kg of acutely hazardous waste per month. Very Small Quantity Generators (VSQGs) generate 100 kg or less of hazardous waste per month. For a facility generating 950 kg of hazardous waste and 0.5 kg of acutely hazardous waste in a calendar month, the primary classification for regulatory purposes is determined by the greater of these quantities when converted to the appropriate category. Since 950 kg of hazardous waste falls within the 100 kg to 1,000 kg range, this facility would be classified as a Small Quantity Generator. The presence of 0.5 kg of acutely hazardous waste, while significant in its own right, does not elevate the generator status beyond SQG because it is below the 1 kg threshold for acutely hazardous waste that would classify them as an LQG. Therefore, the facility’s generator status is dictated by the non-acute hazardous waste quantity, placing it firmly in the Small Quantity Generator category under Oklahoma’s hazardous waste regulations.

The Oklahoma Department of Environmental Quality (ODEQ) administers the hazardous waste program in Oklahoma, which is primarily governed by the Oklahoma Hazardous Waste Management Act (OHWMA) and the associated rules found in the Oklahoma Administrative Code (OAC) Title 310, Chapter 266. These regulations are largely based on the federal Resource Conservation and Recovery Act (RCRA) but may contain state-specific provisions. When a facility generates hazardous waste, it must comply with specific requirements based on its generator status. For a conditionally exempt small quantity generator (CESQG), the rules are less stringent than for small quantity generators (SQG) or large quantity generators (LQG). A CESQG is defined as a generator who generates no more than 100 kilograms (approximately 220 pounds) of hazardous waste per month, or 1 kilogram (approximately 2.2 pounds) of acute hazardous waste per month, and accumulates no more than 1,000 kilograms (approximately 2,200 pounds) of hazardous waste at any time. CESQGs have fewer manifest requirements, can accumulate waste for longer periods under certain conditions, and have different disposal and record-keeping obligations compared to SQGs and LQGs. The key distinction lies in the quantity of waste generated and accumulated. For instance, while LQGs must obtain an EPA identification number and adhere to strict accumulation time limits and personnel training, CESQGs are exempt from these specific requirements. However, they must still ensure their hazardous waste is managed at a permitted hazardous waste treatment, storage, or disposal facility (TSDF) or a facility that is otherwise authorized to manage hazardous waste, such as a permitted municipal solid waste landfill that is authorized to accept such waste, or a recycling facility. The OHWMA and OAC 310:266-1-3 define these generator categories and their respective obligations. The scenario presented involves a facility that generates 80 kilograms of hazardous waste per month and accumulates a maximum of 700 kilograms. This falls squarely within the definition of a CESQG in Oklahoma.

The Oklahoma Department of Environmental Quality (ODEQ) oversees hazardous waste management within the state, largely aligning with the federal Resource Conservation and Recovery Act (RCRA). When a generator of hazardous waste ceases operations, they must still manage their existing hazardous waste inventory. Oklahoma Administrative Code (OAC) 310:230-1-2 defines a “closed facility” in the context of hazardous waste management. For a facility that has ceased to generate hazardous waste but still possesses such waste, the primary regulatory obligation is to ensure that waste is managed in accordance with applicable regulations until it is properly treated, stored, or disposed of. This includes adhering to requirements for storage, manifesting, and ultimate disposal at a permitted Treatment, Storage, and Disposal Facility (TSDF). The concept of “abandonment” of hazardous waste is strictly prohibited and carries significant penalties. Therefore, a facility that has ceased operations but still has hazardous waste on-site must continue to operate under the relevant hazardous waste management regulations as a generator, even if they are no longer actively producing waste, until all such waste is removed and accounted for. This might involve maintaining generator status, adhering to storage time limits, and ensuring proper manifesting for off-site shipment.

The Oklahoma Department of Environmental Quality (ODEQ) has specific requirements for the management of hazardous waste. When a generator of hazardous waste ceases to operate, they must properly close their hazardous waste management units. This closure process is governed by regulations designed to protect human health and the environment. For a facility that has generated hazardous waste but no longer operates, the primary concern is ensuring that any remaining hazardous waste or contaminated areas are managed in a way that prevents future releases. This typically involves a thorough assessment of the site, removal of all hazardous waste, and decontamination of any affected areas. The regulations, particularly those mirroring the Resource Conservation and Recovery Act (RCRA) at the federal level and adopted by Oklahoma, outline a phased approach to closure. This includes developing a closure plan, executing the closure activities, and certifying that closure is complete. The certification of closure is a critical step, as it signifies that the facility has met all regulatory requirements and no longer poses a threat from its past hazardous waste activities. This certification is submitted to the ODEQ for review and approval, confirming that the site has been closed in accordance with applicable standards, such as those found in Oklahoma Administrative Code (OAC) Title 310, Chapter 265, which details the standards for closure and post-closure care for hazardous waste facilities.

The Oklahoma Hazardous Waste Management Act, specifically through its implementing regulations, establishes a framework for managing hazardous waste. A key aspect of this framework is the concept of “cradle-to-grave” management, which ensures accountability from the point of generation to final disposal. When a generator ceases operations, the responsibility for managing any remaining hazardous waste does not simply disappear. Instead, the Act and its associated regulations, particularly those mirroring federal RCRA provisions as adopted by Oklahoma, stipulate that the responsibility for proper management transfers to the owner or operator of the facility where the waste is located, or to the entity that acquired the property, unless specific exemptions apply. This transfer of responsibility is crucial for environmental protection and public health, ensuring that abandoned hazardous waste sites are properly addressed. The regulations do not automatically absolve the original generator of all potential future liability, especially if the transfer of responsibility is not adequately documented or if the new entity is unable to manage the waste. However, for the purpose of immediate compliance and management of existing waste at a closed facility, the onus falls on the current property holder or operator.

The Oklahoma Department of Environmental Quality (ODEQ) implements the Resource Conservation and Recovery Act (RCRA) within the state. RCRA establishes a framework for managing hazardous waste from its generation to its final disposal. A key aspect of this framework is the definition of hazardous waste itself, which is crucial for determining regulatory applicability. Under Oklahoma’s hazardous waste regulations, which largely mirror federal standards, waste is classified as hazardous if it is specifically listed by the EPA or the state, or if it exhibits one or more hazardous characteristics: ignitability, corrosivity, reactivity, or 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 deemed hazardous. For example, if a waste generated at a manufacturing facility in Tulsa exhibits a leachate concentration of lead exceeding the regulatory limit of 5.0 mg/L as determined by the TCLP, it would be classified as a hazardous waste due to toxicity, regardless of whether it is specifically listed. This classification triggers a cascade of regulatory requirements, including manifesting, record-keeping, storage limitations, and treatment standards, all aimed at protecting human health and the environment. The specific TCLP limits for various contaminants are detailed in federal regulations and adopted by Oklahoma.

The Oklahoma Department of Environmental Quality (ODEQ) is responsible for implementing the Resource Conservation and Recovery Act (RCRA) within the state. Under RCRA, generators of hazardous waste are classified based on the quantity of hazardous waste they produce per month. This classification determines the specific management standards they must follow. Large Quantity Generators (LQGs) are defined as those generating 1,000 kilograms (kg) or more of hazardous waste per calendar month, or more than 1 kg of acute hazardous waste per calendar month. Small Quantity Generators (SQGs) are those generating between 100 kg and 1,000 kg of hazardous waste per calendar month, or between 1 kg and 1,000 kg of acute hazardous waste per calendar month. Conditionally Exempt Small Quantity Generators (CESQGs), now often referred to as Very Small Quantity Generators (VSQGs) under federal revisions adopted by many states including Oklahoma, generate 100 kg or less of hazardous waste per calendar month, and less than 1 kg of acute hazardous waste per calendar month. The scenario describes a facility in Oklahoma that consistently generates 950 kg of hazardous waste per month, with no generation of acute hazardous waste. This quantity falls squarely within the definition of a Small Quantity Generator. Therefore, the facility must comply with the management standards applicable to SQGs as outlined in the Oklahoma Administrative Code (OAC) Title 310, Chapter 266, which are generally less stringent than those for LQGs but more stringent than those for VSQGs.

The Oklahoma Department of Environmental Quality (ODEQ) oversees hazardous waste management within the state, largely in alignment with the federal Resource Conservation and Recovery Act (RCRA). RCRA establishes a “cradle-to-grave” system for managing hazardous waste. This system mandates tracking hazardous waste from its generation to its ultimate disposal. A key component of this tracking is the Uniform Hazardous Waste Manifest, a multi-copy form that accompanies hazardous waste shipments. When a generator sends hazardous waste to a treatment, storage, and disposal facility (TSDF), the manifest is signed by the generator, the transporter, and the TSDF. The TSDF is then responsible for returning a copy of the signed manifest to the generator, confirming receipt of the waste. This return copy serves as proof that the waste arrived at its intended destination and was accepted by the permitted facility. If the manifest is not returned to the generator within a specified timeframe, the generator is obligated to investigate the whereabouts of the waste. This regulatory requirement is crucial for ensuring accountability and preventing illegal dumping or diversion of hazardous materials. The Oklahoma Administrative Code (OAC) 310:246-3-3 details the manifest system requirements for generators, including the timeframe for receiving the signed copy back from the designated facility. The regulation specifies a 30-day period for the TSDF to return the signed manifest copy to the generator. If this period elapses without the return of the manifest, the generator must initiate an inquiry to determine the status of the shipment. This proactive measure is a cornerstone of responsible hazardous waste management in Oklahoma.

The Oklahoma Department of Environmental Quality (ODEQ) establishes specific requirements for the management of hazardous waste. Under the Oklahoma Administrative Code (OAC) Title 310, Chapter 266, facilities that generate hazardous waste are categorized based on the quantity of waste produced per month. These categories determine the specific regulatory requirements, including storage time limits, manifest procedures, and personnel training. A large quantity generator (LQG) is defined as a facility that generates 1,000 kilograms (kg) or more of hazardous waste in a calendar month, or more than 1 kg of acute hazardous waste in a calendar month. A small quantity generator (SQG) generates between 100 kg and 1,000 kg of hazardous waste per month. An even smaller quantity generator (ESQG) generates 100 kg or less of hazardous waste per month. The scenario describes a facility in Tulsa, Oklahoma, that consistently generates 1,200 kg of hazardous waste per month. This quantity clearly exceeds the threshold for a small quantity generator and falls squarely within the definition of a large quantity generator under OAC 310:266. Consequently, the facility must comply with the most stringent set of regulations applicable to LQGs, which includes specific requirements for emergency preparedness, waste analysis, record-keeping, and reporting, in addition to the standard manifest system and storage limitations.