Regulatory limit

1 American Conference of Governmental Industrial Hygienists (ACGIH) 

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U.S. EPA Environmental Monitoring Methods Index, including regulatory Hsts, analytical methods, detection and regulatory limits coverage of worldwide environmental information... 

A basic choice is that of operating frequency. In principle, operation can take place at any frequency at the cost of suppression of electromagnetic leakage to regulatory limits on RFI, eg, 25 ]lV/m at 304 m. This cost is avoided, however, by operating within assigned ISM bands. Minimum cost results in bands of considerable use where components are readily available. In the United States, these popular microwave bands are 915 and 2450 MH2. 

Isolation of radioactive wastes for long periods to allow adequate decay is sought by the use of multiple barriers. These include the waste form itself, the primary containers made of resistant materials, overpacks as secondary layers, buffer materials, concrete vaults, and finally the host rock or sod. Barriers limit water access to the waste and minimize contamination of water suppHes. The length of time wastes must remain secure is dependent on the regulatory limit of the maximum radiation exposure of individuals in the vicinity of the disposal site. 

Both regulatory limits on the amount of organic solvents allowed in paints and advancements in alkyd resin technology have resulted in the development of higher soHds alkyd resins that requke less solvent for dilution and viscosity reduction. In addition, developments of water-reducible alkyds and alkyd emulsions have resulted in alkyd-based paints that requke less organic solvent in thek formulations. 

Cement plants in the United States are now carehiUy monitored for compliance with Environmental Protection Agency (EPA) standards for emissions of particulates, SO, NO, and hydrocarbons. AH plants incorporate particulate collection devices such as baghouses and electrostatic precipitators (see Air POLLUTION CONTROL methods). The particulates removed from stack emissions are called cement kiln dust (CKD). It has been shown that CKD is characterized by low concentrations of metals which leach from the CKD at levels far below regulatory limits (63,64). Environmental issues continue to be of concern as the use of waste fuel in cement kilns becomes more widespread. 

Do workplace exposures comply with occupational exposure limits or applicable regulatory limits, if they are more stringent If no, explain. 

Are there regulatory limits in the jurisdiction where you reside which are different from your state, provincial, or national air quality or emission limits If so, what are they ... 

The threshold odor concentration of amines in air is typically 10 to 40 ppb. These levels are considerable less than any regulatory limit but offer potential for triggering complaints in laundries, kitchens, and sterilizing equipment rooms. 

SRM 1868 consists of a set of two common bulk mine-grade asbestos materials chrysotile and amosite, contained in matrices simulating building materials (calcium carbonate and glass fiber), in quantities at just below the U.S. ERA regulatory limit of I %. This material is certified by weight for the quantity of each asbestos material present. 

The HiPOx process achieved >99.9% reduction in MTBE concentration and easily met the treatment goal of reducing the concentration of MTBE to below 5 pg/L. However, significant concentrations of MTBE degradation intermediates and oxidation by-products were present in the final effluent. TBA was produced early during the chemical oxidation process. Its concentration was diminished by further oxidation, reaching below its regulatory limit of 12 pg/L in two of the three... 

The relation of measured results to given values, e.g., critical levels, legally fixed values, regulatory limits, maximum acceptable values, is of continual relevance in analytical chemistry. In the analytical reality, the problematic nature of detection leads to the test statistics, strictly speaking to the t-test (Currie [1995, 1997] Ehrlich and Danzer [2006]). By means of that, it is tested, if the determined analytical result is significantly different from the average blank of the critical value, respectively. 

Decrease of metal-ion or organic pollutant concentrations below the regulatory limit or discharge... 

Around 600 substances are covered in this book which includes 70 pesticides. Details covered in the entries includes composition/structure, physical properties, sources, environmentally relevant reactions and pathways, detection and toxic effects, and regulatory limits. Many of the entries also include short case histories. 

EPA. 1977a. Regulatory limitation. U.S. Environmental Protection Agency. Code of Federal Regulations. 40 CFR 129.102. 

Disulfoton is regulated by the Clean Water Effluent Guidelines as state in Title 40, Sections 400-475, of the Code of Federal Regulations. The point source category for which disulfoton has a specific Regulatory Limitation is the organic pesticide chemicals industry (EPA 1978a). 

The committee considered the small amounts of PCBs that are suspected to be present in rocket motors and concluded that these amounts are far too small to pose an environmental concern. No data on PCBs were provided in any of the tests that the committee evaluated. Any small amounts of PCBs that may be present from rockets treated would end up in one of the solid waste streams and be at a concentration well below regulatory limits. 

Regulatory limits for aliatoxin content in food have been established in the U.S. at 20 ppb for food consumed by humans, 0.5 ppb for milk, and 20 to 300 ppb for animal feed. Current European Commission regulatory limits for aliatoxin content in foodstuffs for direct human consumption has been set at 2 ppb, and at 0.05 ppb for milk. EC limits for animal feed are 5 ppb. Contaminated harvests that are not under these maximum limits are to be disposed of. There are also elaborate sampling plans in many regulations (Park et ah, 1998). 

Of the four major disinfectants used today, chlorine generally produces the highest levels of THMs and HAAs. Because drinking water-treatment plants can have difficulty in meeting the regulatory limits, many plants have changed their... 

Three categories of regulatory limitations apply to wastewater discharge from industrial facilities such as oilfields and petroleum refineries [20]. The first category includes effluent limitations, which are designed to control those industry-specific wastewater constituents deemed significant from the standpoints of water quality impact and treatability in conventional treatment systems. In the United States, these limitations are the EPA Effluent Guidelines, issued under Public Law 92-500. 

A major consequence of using regulatory limits based on degradant formation, rather than absolute change of the API level in the drug product, is that it necessitates the application and routine use of very sensitive analytical techniques [ 10]. In addition, the need to resolve both structurally similar, as well as structurally diverse degradants of the API, mandates the use of analytical separation techniques, for example, HPLC, CE, often coupled with highly sensitive detection modes, for example, ultraviolet (UV) spectroscopy, fluorescence (F) spectroscopy, electrochemical detection (EC), mass spectroscopy (MS), tandem mass spectroscopy (MS-MS) and so forth. 

Threshold Toxic Dose for Histamine in Foods and Regulatory Limits... 

The threshold toxic dose for histamine in foods is not precisely known. Estimates are difficult to acquire from outbreaks of histamine poisoning because of the variability in histamine content in the fish (1,65). Simidu and Hibiki ( ) estimated the threshold toxic dose for histamine in fish to be approximately 60 mg/100 g, but their methods were not terribly precise. Based on experience acquired in the investigation of hundreds of scombroid poisoning incidents, the U.S. Food and Drug Administration recently established 50 mg/100 g as the hazard action level for histamine in tuna. They have not yet established regulatory limits for histamine in other fish or cheese. 

Until the role of the potentiators can be more completely elucidated, it may be premature to establish regulatory limits for histamine in fish or other foods on the basis of health hazards. 

This manual may involve hazardous materials, operations, and equipment, and does not purport to address all of the safety problems associated with their use. It is the responsibility of the user of this manual to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 

PaR Systems, Inc. (PaR), has developed the dry size reduction system (DSRS) to aid in the decommissioning of former U.S. Department of Energy (DOE) sites and commercial nuclear facilities. After components are removed in situ, they are processed by the DSRS for compact disposal of contaminated materials, while components that have been cleaned below regulatory limits can disposed of without restrictions. The system is designed to decontaminate and size reduce components as large as steam generators. The technology is commercially available, but there is no information on field demonstrations of the system. 

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