Chemical Hygiene Plan

The chemical hygiene plan has been designed to protect the University of New Mexico (UNM) faculty, staff, professional visitors, students, and visitors from potential health hazards associated with the handling, use, storage, and disposal of hazardous chemicals.

This written document is designed to protect the University of New Mexico (UNM) faculty, staff, professional visitors, students, and visitors from potential health hazards associated with the handling, use, storage, and disposal of hazardous chemicals. This document serves as UNM’s written Chemical Hygiene Plan (CHP) and addresses the requirements of the OSHA “Lab Standard” (OSHA, 29 CFR 1910.1450, Occupational Exposure to Hazardous Chemicals in Laboratories).

As stated in UNM Policy: “The ultimate responsibility for safety, however, cannot be delegated as a staff function, it must be assumed by every member of the University community (emphasis added)” [UNM Administrative Policies and Procedures Manual – Policy 6110: Safety and Risk Services Department]. This document is a broad overview of the information necessary to protect laboratory workers potentially exposed to hazardous chemicals. In addition to this document, laboratories must develop and follow a laboratory-specific SOP. SOP formats are included as an appendix to this plan. Activities that involve hazardous chemicals that have unusual characteristics or whose hazards are not adequately covered in this document must address these specific hazards and their mitigation in their laboratory-specific operating procedure. In addition to this document, UNM Policy 2205 – Minors on campus, establishes general standards for minors participating in University programs and for minors visiting University workplaces and classrooms.

PLAN DESCRIPTION

This plan addresses the five major elements of the Laboratory Standard:

  • Hazard identification
  • Chemical Hygiene Plan
  • Information and training
  • Exposure monitoring
  • Medical consultation and examinations

It also addresses the following topical areas:

  • Regulatory Requirements
  • Responsibilities
  • Worker Information and Training
  • Standard Operating Procedures (SOPs)
  • Chemical Procurement
  • Chemical Inventory
  • Safety Data Sheets (SDSs), previously known as MSDSs
  • Chemical Labels
  • Hazardous Chemical Storage
  • Hazardous Chemical Transportation
  • Chemical Exposure Control
  • Chemical Exposure Assessment
  • Medical Consultation
  • Medical Surveillance
  • Laboratory Audits
  • Hazardous Chemical Spills and Accidents
  • Hazardous Waste Disposal

This plan applies to all UNM facilities engaged in the laboratory use of hazardous chemicals, as defined in the Definitions Section of this plan, and all individuals who work in these facilities. Uses of hazardous chemicals which do not meet the definition of laboratory use shall comply with the relevant standard in 29 CFR part 1910, subpart Z, even if such use occurs in a laboratory. Exceptions to, or deviations from, this plan must be approved by the UNM President.

Material Exemptions

The following materials are exempted from the OSHA Lab Standard and, therefore, do not fall under the scope of this written Chemical Hygiene Plan:

  • Articles;
  • Any hazardous substance that is the focus of remedial or removal action being conducted under the Comprehensive Environmental Response Compensation and Liability Act in accordance with U.S. Environmental Protection Agency regulations;
  • Tobacco or tobacco products;
  • Wood or wood products, including lumber which will not be processed, where the only hazard they pose to workers is the potential for flammability or combustibility;
  • Food or alcoholic beverages that are sold, used, or prepared in a retail establishment, intended for personal consumption by workers while in the workplace;
  • Any drug, when it is in solid, final form for direct administration to a patient (e.g., tablets or pills) intended for personal consumption by employees while in the workplace (e.g., first aid supplies);
  • Cosmetics intended for personal consumption by workers in the workplace;
  • Consumer products used in the workplace for the purpose intended by the chemical manufacturer or importer of the product, where the use results in a duration and frequency of exposure that could reasonably be experienced by consumers when used for the purpose intended;
  • Laboratory uses of hazardous chemicals which provide no potential for employee exposure such as chemically-impregnated test strips (e.g. clinical dipsticks) or commercially prepared diagnostic kits in which all of the reagents needed to conduct the test are contained in the kit;
  • Biological agents;
  • Ionizing radiation; and
  • Nonionizing radiation (refer to the UNM Laser Safety Program for information on Laser Safety).

REGULATORY REQUIREMENTS

The regulatory requirements for the policies, procedures, and work practices outlined in this Chemical Hygiene Plan include but are not limited to:

THE PROVOST, THE EXECUTIVE VICE-PRESIDENT OF ACADEMIC AFFAIRS, AND THE EXECUTIVE VICE-PRESIDENT FOR RESEARCH AND ECONOMIC DEVELOPMENT are responsible for ensuring that departments/centers/units under their authority engaged in the use of hazardous chemicals comply with the UNM Chemical Hygiene Program.

DEANS, DEPARTMENT HEADS AND CENTER DIRECTORS are responsible for:

  • Ensuring departmental compliance with the UNM Chemical Hygiene Plan
  • Assigning a Chemical Hygiene Officer (CHO) for designated work area(s)
  • Establishing a Chemical Safety Oversight Committee for each school, college or operating unit that meets quarterly;
  • Providing the Chemical Hygiene Officer with the support necessary to implement and maintain the CHP; and
  • Ensuring that safety audit findings are resolved within a reasonable timeframe.
  • Notify Environmental Health and Safety (EHS) when changes in CHO appointments occur, and at least annually,
  • Ensuring safety issues and concerns are communicated, in writing, to EHS.

THE CHEMICAL AND LABORATORY SAFETY COMMITTEE (CLSC) is responsible for:

  • Approving the overall format of the University-wide Chemical Hygiene Plan;
  • Review and suggest changes to the Chemical Hygiene Plan annually, and
  • Advising the Provost and the Executive Vice President for Research on chemical and laboratory safety issues;
  • Communicate chemical safety concepts within their organizations.

THE DEPARTMENT OF ENVIRONMENTAL HEALTH AND SAFETY is responsible for:

  • Developing a University-wide chemical Hygiene plan;
  • Developing a University Chemical and laboratory inspection plan and schedule;
  • Developing a uniform chemical inventory system accessible by all UNM laboratories;
  • Developing and providing training and training materials applicable to campus-wide requirements;
  • Assisting departments and laboratories with tailored training in their areas as needed;
  • Assisting laboratories with the development of Chemical Hygiene Plans and SOPs;
  • Conducting exposure assessments and evaluating exposure control measures;
  • Providing or coordinating the emergency response for hazardous chemical spills;
  • Compiling the data from the audits into a report for the CLSC, Center Directors and Department Heads, and Chemical Safety Officers;
  • Investigating hazardous chemical incidents and filing the appropriate reports;
  • Receiving and maintaining chemical and laboratory safety reports from Chemical Hygiene Officers and other UNM personnel;
  • Conducting periodic chemical safety audits and facilitate compliance with all regulatory agencies having jurisdiction on UNM main and branch campuses;
  • Reporting chemical and laboratory safety non-compliance issues to the Provost, to the Executive Vice-President for Academic Affairs, and the Executive Vice-President for Research;
  • Reporting to the CLSC trends in laboratory compliance and safety. Developing and maintaining chemical safety self-audit forms; and
  • Performing an annual evaluation of the Chemical Hygiene Plan, for regulatory compliance, for consideration by the CLSC.

Chemical Hygiene Officer (CHOs) or their designee is responsible for:

  • Working with administrators, faculty, and staff to develop and implement appropriate chemical safety policies and procedures for the work areas to which she/he has been assigned;
  • Monitoring and documenting hazardous chemical and laboratory safety issues in their laboratory;
  • Communicating guidance on chemical and laboratory safety with faculty investigators and research staff;
  • Monitoring procurement, use, and disposal of chemicals used in the work areas to which he/she has been assigned;
  • Provide area-specific chemical safety training and information for procedures, protocols, and the Chemical Hygiene Plan for the laboratory to faculty, staff, and students prior to their performing laboratory operations with hazardous chemicals, with EHS providing lab-specific training assistance as requested. Notify Environmental Health and Safety if a new risk assessment is required (introduction of new chemical risk, change in engineering controls that could impact laboratory worker exposure, significant changes in quantities or processes);
  • Assisting in maintaining the chemical inventory and SDSs for the work areas to which he/she has been assigned;
  • Ensuring chemical safety self-audits are conducted and documented for the work areas to which she/he has been assigned;
  • Conducting and documenting an annual self-audit to assess laboratory compliance with the laboratory Chemical Hygiene Plan, and maintain self-audit records;
  • Coordinating the development of the Chemical Hygiene Plan(s) for the laboratories she/he is assigned to assist;
  • Coordinating an annual evaluation of the laboratory Chemical Hygiene Plan(s); and
  • When providing access for professional visitors, providing access to the laboratory’s Chemical Hygiene Plan, relevant SOPs, the list of hazards and controls, including emergency action and reporting requirements.

PRINCIPAL INVESTIGATOR/SUPERVISOR or their designee is responsible for:

  • Ensuring that faculty, staff, students, and visitors comply with the UNM Chemical Hygiene Plan and do not operate equipment or handle hazardous chemicals without proper training and authorization by the PI or supervisor;
  • Maintaining a chemical inventory for her/his work area(s);
  • Ensuring chemical safety training is provided and up-to-date training records are properly maintained on-site;
  • Developing Safety Data Sheets for chemicals produced in the laboratory.
  • Developing and implementing laboratory-specific Chemical Hygiene Plan for the laboratory (by adding laboratory-specific information to this template and following this plan), and Standard Operating Procedures (SOPs) for each hazardous chemical or laboratory process that is not already included in the general Chemical Hygiene Plan;
  • Reviewing procedures, in coordination with EHS, for potential safety problems before assigning to other personnel;
  • Ensuring that Personal Protective Equipment (PPE) is available and properly used;
  • Conducting regular, formal chemical hygiene and housekeeping inspections, including routine inspections of laboratory equipment including emergency equipment;
  • Ensuring that facilities and engineering controls are maintained and function properly;
  • Ensuring Environmental Health and Safety is notified if a new risk assessment is required due to the introduction of a new chemical risk or a change in engineering controls is required;
  • Contacting the appropriate person(s) to report problems with the facilities or engineering controls;
  • Maintaining records of self-audits and training that is specific for that laboratory (if not recorded in UNM’s Learning Central); and
  • When providing access for professional visitors, providing access to the laboratory’s Chemical Hygiene Plan, relevant SOPs, the list of hazards and controls, including emergency action and reporting requirements, obtain a signed acknowledgment, sending a copy of this signed acknowledgment to EHS.

FACULTY, STAFF engaged in the use of hazardous chemicals are responsible for:

  • Reading and understanding the requirements of the UNM and lab-specific Chemical Hygiene Plan and SOPs, or be escorted by someone that has;
  • Planning and conducting operations in accordance with the UNM Chemical Hygiene Plan and applicable laboratory-specific Standard Operating Procedures;
  • Using all required engineering controls and PPE;
  • Notifying the Chemical Hygiene Officer, supervisor, or EHS of any hazardous conditions or unsafe work practices in the work area;
  • Reporting all accidents and potential chemical exposures immediately to the CHO or supervisor;
  • Promoting good housekeeping practices in the laboratory or work area;
  • Escorting students and/or visitors in the laboratory; and
  • When providing access for professional visitors, providing access to the laboratory’s Chemical Hygiene Plan, relevant SOPs, the list of hazards and controls, including emergency action and reporting requirements. Obtain a signed acknowledgment and sending a copy of this signed acknowledgment to EHS.

PROFESSIONAL VISITOR engaged in the use of hazardous chemicals are responsible for:

  • Acknowledging receipt and understanding of the laboratory’s Chemical Hygiene Plan, relevant SOP’s, and what to do in case of an emergency.

STUDENTS AND VISITORS engaged in the use of hazardous chemicals are responsible for:

  • Remaining with their escort and following their instructions;

                                                      OR

  • Reading and understanding the requirements of the UNM and lab-specific Chemical Hygiene Plan and SOPs, or be escorted by someone that has;
  • Planning and conducting operations in accordance with the UNM Chemical Hygiene Plan and applicable laboratory-specific Standard Operating Procedures;
  • Using all required engineering controls and PPE;
  • Notifying the Chemical Hygiene Officer or supervisor of any hazardous conditions or unsafe work practices in the work area;
  • Reporting all accidents and potential chemical exposures immediately to the CHO or supervisor; and
  • Promoting good housekeeping practices in the laboratory or work area.

PIs, supervisors, and lab managers, in consultation with EHS, shall provide information and training to inform all lab workers and students of the physical and health hazards of the hazardous chemicals in their work area. The information and training must be provided to the worker or student at the time of her/his initial assignment to work involving the use of hazardous chemicals, prior to assignments involving new exposure situations, and upon changes in the procedures and/or chemicals that present new hazards in the work area. Also, annual refresher training on the Chemical Hygiene Plan is required for all laboratory employees and students. Training shall be documented in Learning Central or other method approved by the CHO, and readily available for inspection.

Basic chemical safety training will include the following information:

  • The location of the OSHA Standards: 29 Code of Federal Regulations (CFR) 1910.1450, Occupational Exposure to Hazardous Chemicals in Laboratories, as well as 29 Code of Federal Regulations (CFR) 1910.1200, Hazard Communication; and how they can access the standards;
  • Explanation of UNM’s Chemical Hygiene Plan including labeling system, SDSs, and how employees can obtain chemical hazard information, including information on occupational exposure limits;
  • A description of the various methods and observations that may be used to detect the presence or release of a hazardous chemical in the work area;
  • General guidance on the selection of protective measures to reduce chemical exposure;
  • Information on safety resources; and
  • General emergency procedures to be used in the event of accidental exposure to hazardous chemicals, including emergency phone numbers.

In addition to general chemical safety training, lab workers and students must be provided with area-specific training and information. This training will include:

  • The specific physical and health hazards of chemicals used in their work areas, including signs and symptoms of exposure;
  • The specific protective measures required when using the chemicals in their work area;
  • The specific methods and observations that may be used to detect the presence or release of a hazardous chemical in their work area;
  • The location of eyewashes and safety showers, and how to use them in the event of chemical exposure; and
  • Training on the applicable details of the Chemical Hygiene Plan relevant to their laboratory.

All training provided must be properly documented. Documentation shall include at the minimum: the title of training, name of trainer, the date the training was offered, name and signature of participants, and the training material.

Before beginning any work involving hazardous chemicals, SOPs will be developed by the PI/laboratory supervisor for procedures in which hazardous chemicals are used, or for each hazard class used in the laboratory. All SOPs must have a Job Hazard Analysis (JHA), which identifies the task(s), the hazard for each task, and the controls (engineering controls, administrative controls, personal protective equipment controls). A JHA form, attached to this document, can be attached to any SOP, for ease of review by all who use the SOP. An SOP may be one of three different types. These are:

  • Hazardous chemical: the SOP is specific to an individual chemical such as nitric acid or ethylene oxide. (Recommended for OSHA designated Particularly Hazardous Substances);
  • Process: the SOP will be for a process such as distillation, synthesis, etc.; or
  • Hazard class: the SOP will be for a hazard class of chemicals such as oxidizer, flammable, corrosive, etc.

The choice of SOP type and the number of SOPs is left to the discretion of the PI/laboratory supervisor. For an uncomplicated, routine activity involving very few materials, a process SOP may be adequate while an activity involving multiple chemicals might be best addressed using a combination of process and hazard class SOPs. In the case of OSHA designated Particularly Hazardous Substances (PHS), it is recommended that a separate SOP be written that specifically addresses the PHS.

In the case of an OSHA designated Particularly Hazardous Substance, laboratory-specific standard operating procedures must include the following requirements where appropriate:

  • Establishment of a designated area;
  • Use of containment devices such as fume hoods or glove boxes;
  • Other mandatory controls including personal protective equipment;
  • Procedures for the safe removal of contaminated waste; and
  • Decontamination procedures.

The laboratory supervisor, with ’s assistance, as needed, will determine what engineering controls and personal protective equipment are necessary for each SOP. The SOPs will be included as part of the laboratory-specific Chemical Hygiene Plan.

Chemicals shall be purchased one of four ways:
  1. Through the Enterprise Reagent Manager (ERM) system, using a UNM issued Purchase Card (P-card). ERM is a web-based chemical inventory management system. ERM can link to LoboMart which hosts catalogs for different chemical vendors;
  2. By purchase requisition or P-Card through the Chemical and Research Laboratory Supplier (CRLS) located at Clark Hall (Building 22);
  3. By walk-in to CRLS for purchases; or
  4. Directly from a vendor, outside of ERM, using a P-Card or Purchase Order. Chemicals purchased using this method must be immediately barcoded and entered into ERM by the purchaser upon delivery. Contact for bar codes.

UNM- has implemented a web-based inventory program: Enterprise Reagent Manager (ERM) which links with an acquisition program of Chemical and Research laboratory Supplier (CRLS) to a web-based inventory management system. Authorized users can access the ERM system if they are on a computer hard-wired into a UNM server. Training on how to use ERM can be found on Learning Central. To access ERM for the first time, please contact . Chemical inventory records require the name of the chemical, CAS number, building, and room number, size, and the number of containers, and must be entered into the ERM chemical inventory management system. When hazardous chemicals are donated to an activity, they must be included in the activity’s chemical inventory.

Before a decision is made to acquire a chemical, the purchaser will determine whether:

  • A Safety Data Sheet is available;
  • The proposed quantity is an appropriate amount for the activity;
  • There is a less hazardous or non-hazardous chemical available;
  • There is a surplus chemical available from another chemical owner; and
  • Information and facilities are available for safe disposal of hazardous waste generated by that chemical’s use.
All chemicals shall be purchased using one of the methods listed above.
UNM laboratories are required to maintain an accurate, up-to-date inventory of all hazardous chemicals known to be present using a product identifier that is referenced on the appropriate Safety Data Sheet. Each laboratory is responsible for maintaining its own inventory, using ERM. EHS will provide initial chemical inventory entry into ERM, upon request by the laboratory, which will then be maintained by the laboratory personnel. EHS will also conduct periodic checks of each lab’s chemical inventory to make sure it is up to date.

Safety Data Sheets (SDSs) (formerly MSDSs or Material Safety Data Sheets) are required for all chemicals located in the laboratory, including those that are produced in the lab, received from a distributor or importer. When an SDS is not available the chemical owner is responsible for preparing an SDS. Exceptions to developing SDS may apply for chemicals that are produced in the laboratory solely for in-house use in the lab. See OSHA letter of interpretation located at https://www.osha.gov/laws-regs/standardinterpretations/2002-02-20

Contact the organizational Chemical Hygiene Officer or the Department of Environmental Health and Safety at 277-2753 for assistance in developing an SDS.

Work area supervisors shall ensure that lab workers and students have ready access to Safety Data Sheets for all hazardous chemicals used in their work area in accordance with the applicable requirements in 29 Code of Federal Regulations (CFR) 1910.1200, Hazard Communication and 29 Code of Federal Regulations (CFR) 1910.1450, Occupational Exposure to Hazardous Chemicals in Laboratories. Work area supervisors must also ensure that lab workers and students review the SDS prior to initially working with the chemical.

Each hazardous chemical container in the workplace shall be labeled in accordance with 29 Code of Federal Regulations (CFR) 1910.1200, Hazard Communication. Chemicals shipped prior to June 1, 2015, must be labeled either in accordance with HazCom 1994 or the 2012 revised standard. HazCom 1994 requires that each hazardous chemical container in the workplace shall be labeled, tagged or marked to provide:

  • The identity of the hazardous chemical;
  • Appropriate hazard warning information for worker protection (physical and health hazards); and
  • The name and address of the chemical manufacturer, importer, or other responsible parties.

All hazardous chemicals from manufacturers and distributers only, beginning June 1, 2015, must be labeled in accordance with the new OSHA Hazard Communication standard, known as the Globally Harmonized System (GHS), as outlined in the OSHA HazCom standard modifications of 2012. This standard requires each hazardous chemical container in the workplace be labeled, tagged or marked to provide:

  • Product identifier;
  • Signal word;
  • Hazard statement(s);
  • Pictogram(s);
  • Precautionary statement(s); and
  • The name, address, and telephone number of the chemical manufacturer, importer, or other responsible parties.

For further explanation of the labeling components, including pictograms and signal words, go to https://www.osha.gov/dsg/hazcom/index.html.

Exceptions to this requirement are:

  • Signs, placards, process sheets, batch tickets, operating procedures or other such written materials may be used in lieu of affixing labels on individual stationary process containers as long as the alternative method identifies the containers to which it is applicable and conveys the information required to be on the label.
  • Portable containers into which hazardous chemicals are transferred from labeled containers, and which are intended only for the immediate use (i.e., during the work shift) of the worker who performs the transfer need not be labeled. However, if the container is left unattended for any period of time, a label is required that includes the name of the chemical, date created, and the owner of the container.
  • Solid metal (such as a beam or a metal casting), solid wood, or plastic items that are not exempted as articles due to their downstream use, have signs, placards, operating procedures, or other such written materials used in lieu of affixing labels to individual items and are only used as long as the alternative method identifies the material to which it is applicable and conveys the required above information.
  • Drugs which are dispensed by a pharmacy to a health care provider for direct administration to a patient

Portable, secondary or other in-house workplace containers must be labeled with all of the required information that is on the label from the chemical manufacturer or, the product identifier and words, pictures, symbols or a combination thereof which provide specific information regarding the hazards of the chemical.

Alternative labeling systems such as National Fire Protection Association (NFPA) diamonds or the Hazardous Material Information System (HMIS) are allowed for workplace labels as long as they are consistent with the 2012 revised HazCom Standard (e.g. no conflicting hazard warnings or pictograms).

Chemical labels shall be maintained in legible condition and not to be removed or defaced. Any chemical container without a label should be reported to the lab supervisor immediately.

All pipes and piping that contains hazardous chemicals contents must be labeled in accordance with applicable UNM standards. Where a UNM standard for labeling pipes that contain hazardous chemicals does not exist, refer to ANSI/ASME A13.1 or other national consensus standard. An SDS will be maintained for hazardous materials piped, and the same name will be on the label, in an easily readable size and location, as is on the commensurate SDS. Hazardous material pipe labeling will be applied such that the piping contents will be easily identifiable by someone that may impact or perform maintenance/modification on the line. Contact for more details.

Containers into which chemical waste is being accumulated must be labeled with the words “Hazardous Waste” and the chemical contents listed on the container. For more information on managing hazardous waste refer to Environmental Health and Safety procedure for managing hazardous waste.

Storage includes all chemical phases and all types of containers including, but not limited to, tanks, piping, cylinders, and containers of solid, liquid, or gaseous chemicals. Storage includes all chemicals or chemical products, including used and unused chemicals, sealed, opened, or partially filled containers, working solutions, day-use containers, and chemical “residues” left within tanks, piping, or other containers. There are additional regulatory requirements that must be complied with when storing Hazardous Waste. Those requirements are not covered in this document. For information on how to store hazardous waste, refer to the Environmental Health and Safety procedures for managing hazardous waste.

All chemicals must be stored by hazard class, with incompatible chemicals segregated to prevent accidental contact with one another. Chemical storage will be limited to the quantity necessary to perform the work and within safe limits. Liquid hazardous chemicals in laboratories should be stored so that a spill will not exceed 20 L (5 gallons), as required by NFPA 45, Standard on Fire Protection for Laboratories Using Chemicals. Flammable and combustible liquids must be limited to less than the maximum quantities allowed in Table 10.1.1 of NFPA 45.

Refrigerators and freezers used for storing flammable liquids must be specifically designed (e.g. explosion-proof, laboratory safe) for that purpose. All chemical storage refrigerators shall only be used for storing chemicals, never food or drink. These refrigerators are to be labeled “NO FOOD OR DRINK TO BE STORED IN THIS REFRIGERATOR,” or similar wording.

Containers of materials that might become hazardous during prolonged storage (i.e. peroxide forming chemicals) will be dated when first opened. At the end of six months after opening, the material will be evaluated or tested for continued safe use. For a list of peroxide forming chemicals and testing methods refer to the Chemical Storage Program in the Environmental Health and Safety Manual.

Material that is found to be safe or that can be stabilized to be made safe will be permitted to be re-dated and retained for an additional 6-month period, or according to manufacturer’s instructions, whichever is more stringent. All other materials will be safely and compliantly discarded.

Further requirements for the storage of chemicals are contained in the UNM Chemical Storage Program (refer to the Environmental Health and Safety Manual).

All compressed gas cylinders, whether in use or in storage, empty or full, shall be secured by a chain or other effective fastening device preventing the cylinder from falling over. Users of compressed gas cylinders must comply with the requirements contained in the EHS Compressed Gas Cylinder Program (refer to the Environmental Health and Safety Manual).

If a hazardous chemical is produced in a UNM laboratory for another user outside of the laboratory, or if any hazardous chemical is shipped over public roads from the laboratory, the chemical owner will provide labels and SDSs that meet applicable OSHA and Department of Transportation (DOT) requirements. Some DOT requirements are found in 49 CFR Part 171.

On-site and off-site transportation of chemicals will be done in accordance with applicable DOT and EPA requirements. Transportation refers to the movement of chemicals within and between buildings, on-site vehicular movement of chemicals on non-public roads, and both on-site and off-site vehicular movement of chemicals on public roads.

Hazardous chemicals that are transported between stockrooms and laboratories must be done using break-resistant secondary containment, such as commercially available bottle carriers, large enough to hold the contents of the chemical container(s) in the event of breakage. Heavy or multiple containers should be moved using laboratory carts and freight-only elevators should be used when available. On-site movements via vehicle must be done in a UNM vehicle, with a list of the hazardous materials by hazard class and quantity inside the vehicle. Hazardous materials must be secondarily contained, not in the cab of the vehicle (or in space that is contiguous with the cab), and secured against movement while the vehicle is in motion.

Compressed gas cylinder handling shall be with a suitable hand truck, secured by straps or chains, and the valve protected with a cover cap or a protection designed cylinder (as in the case of a Dewar). Dragging, sliding, or rolling of cylinders should be avoided.

The transportation and shipment of hazardous chemicals and compressed gases is strictly regulated by international, federal, and state agencies including the Department of Transportation (DOT) and the International Civil Aviation Organization (ICAO). Only specially trained persons are allowed to prepare and/or ship these materials. The shipment of hazardous materials by untrained persons is illegal and violators are subject to criminal penalties. UNM employees who prepare and package hazardous material for shipment, or sign hazardous materials manifests and shipping papers must be trained and hold a current certification by the training institution. Personnel who wish to ship or transport hazardous chemicals or compressed gases off-campus must contact Environmental Heath and Safety at 277-2753.

A hierarchy of control methods should be used to ensure that any chemical exposures do not exceed OSHA Permissible Exposure Limits (PELs) or other established occupational exposure limits (OELs) when an appropriate PEL does not exist. The hierarchy of controls prioritizes intervention strategies based on the premise that the best way to control a hazard is to systematically remove it from the worker’s environment, rather than relying on employees to reduce their exposure. The types of measures that should be used to protect employees (listed from most effective to least effective) are: elimination/substitution, engineering controls, administrative controls, work practices, and personal protective equipment. Engineering controls, such as chemical fume hoods, physically separate the employee from the hazard. Administrative controls, such as operating procedures and training, minimize or eliminate hazards by controlling work practices. Personal protective equipment and clothing provide additional protection when exposure is either unavoidable or there is a likelihood of inadvertent exposure. The hierarchy of controls should be implemented in the following order:

  • Elimination/substitution whenever feasible
  • Engineering controls, whenever feasible
  • Administrative controls whenever engineering controls are not feasible or do not achieve full compliance and administrative controls are practical
  • Personal protective equipment, including respiratory protection, when:
    • the time period necessary to install or implement feasible engineering controls
    • engineering and administrative controls fail to achieve full compliance
    • there is an emergency

Elimination of a hazardous chemical or substitution of a hazardous chemical with a less hazardous chemical is the preferred method to control chemical hazards. Whenever possible, personnel will consider eliminating hazardous chemicals, substituting less hazardous chemicals, and minimizing the amount of chemicals required for hazardous chemical activity. In addition to reducing potential personnel exposures, these measures limit UNM’s environmental impact and support UNM’s waste minimization/ pollution prevention efforts.

Laboratory Ventilation

All work with chemicals should be performed so that personal exposures to hazardous chemicals and the potential for vapor or dust explosion is minimized. The best way to accomplish this is by using Local Exhaust Ventilation (LEV) systems such as chemical fume hoods, snorkels, downdraft tables, glove boxes, and toxic gas cabinets. Chemical fume hoods are most often the primary control device used when working with flammable and/or toxic chemicals. Chemical fume hoods or other suitable engineering controls should be used when working with all hazardous substances and must be used for all work with OSHA designated particularly hazardous substances.

All laboratory fume hoods and other LEV must be certified annually or whenever a significant change has been made in its use or location. Chemical fume hood certification is determined by several factors, including the average face velocity, the overall condition of the hood, the types and quantities of chemicals used in the hood. All chemical fume hoods must maintain an average face velocity that is adequate to provide containment. Such face velocities typically range from 80-125 fpm at a sash height of 18 inches. Fume hood evaluations will include the quality of the structure, the installation, airflow patterns, and use of the hood. Chemical fume hood evaluations and certifications will be conducted by qualified personnel or an approved third party vendor.

A certification sticker will be placed on all hoods that meet the standards described above. The sticker will be placed on the side of the hood with an arrow that shows the maximum safe operating sash height.

If the hood does not pass the certification, it will be labeled with a red "DO NOT USE" sticker. That means the hood is not certified for use and may be unsafe. Hoods that do not pass will receive priority maintenance. PPD will notify when the hood is repaired and will re-evaluate the hood prior to use.

Information on recommended practices for safe use of chemical fume hoods can be found on the website.

Prior to certification, all new chemical fume hoods must have an alarm system to alert personnel if the hood is not functioning properly and it is recommended that established hoods be retrofitted with an alarm system.

The use of ductless fume hoods shall be limited only to operations that could be performed on an open bench without presenting an exposure hazard. The use of ductless fume hoods for operations involving hazardous chemicals is prohibited.

When a UNM standard does not exist, LEV will be certified using the manufacturer’s standard or other acceptable consensus standard, such as the ANSI, ASHRAE standard. For additional guidance on requirements governing the design, installation, maintenance and use of chemical fume hoods and other LEV systems contact Safety and Risk Services

Administrative controls include policies and procedures. They are not as reliable as engineering controls in that the user has to carefully follow procedures and must be fully trained and aware to do so.

While general guidance regarding laboratory work with chemicals is contained in this plan, before beginning any work involving hazardous chemicals, SOPs will be developed for each laboratory by the PI/laboratory supervisor. In many cases, a general standard operating procedure can be created for a group of laboratories that have similar chemical hazards and operations. During the development of the SOP, the Safety Data Sheet (SDS) for each hazardous chemical that will be addressed in the SOP should be referenced. The SDS contains important information such as exposure limits, type of toxicity, warning properties, signs and symptoms of exposure, and recommended PPE. If an SDS is not available for a new chemical that will be produced, and the toxicity is unknown, the chemical should be considered a Particularly Hazardous Substance.

The PI/laboratory supervisor, with ’s assistance, will determine what engineering controls and personal protective equipment are necessary for each SOP. The SOPs will be included as part of the laboratory-specific Chemical Hygiene Plan. The Principal Investigator and all personnel responsible for performing the procedures detailed in the SOP shall sign the SOP acknowledging the contents, requirements and responsibilities outlined in the SOP. The SOPs shall be reviewed annually and shall be amended when there are changes in chemicals, conditions, methods, or equipment. For certain hazardous chemicals, PHS, or specialized practices, consideration must be given to whether additional consultation with safety professionals is warranted or required.

Circumstances requiring prior approval from the PI/Laboratory Supervisor will also be addressed in protocols and/or SOPs.

Lab requirements for PPE must be specified by the PI/laboratory supervisor, based on an evaluation of potential hazards. The minimum required PPE for laboratory chemical operations includes:

  • safety glasses with side shields,
  • protective gloves,
  • a laboratory coat,
  • closed-toe shoes, and
  • Long pants or other clothing that covers the legs.

Flame resistant laboratory coats are recommended for pyrophorics and flammables. Based on a chemical’s hazard warning label or Safety Data Sheet, additional or more protective equipment may be required. For instance, if a project involves a chemical splash hazard; chemical goggles and/or face shields, aprons, and sleeves may be needed. Gloves, lab coats, and any other potentially contaminated PPE shall not be worn outside the laboratory or into areas where food is stored and consumed.

All PPE must be appropriate for the chemicals being used and eye protection must be American National Standards Institute (ANSI) approved. Gloves should only be used under the specific conditions for which they are designed and selected. Based on the specific chemical hazards present, gloves should be selected by referring to the glove manufacturer’s selection charts. If adequate information cannot be obtained from the SDS or other sources, contact at 277-2753 for assistance. For more information on PPE, refer to the Personal Protective Equipment Program in the Manual.

Respiratory protection should be the last choice in protecting lab personnel if the hazard cannot be eliminated through the substitution of safer chemicals and/or engineering controls. Personnel required to wear a respirator at UNM shall do so only after medical authorization, documented training and documented fit testing. Contact at 277-2753 for assistance with training on respiratory protection and fit testing. For more information, refer to the Respiratory Protection Program in the Manual.

All personal protective equipment should be kept clean and stored in an area where it will not become contaminated. Contaminated PPE should be cleaned or discarded and replaced. PPE should be inspected prior to use and replaced if unserviceable. Non-disposable gloves that become contaminated or degrade overt ime must be discarded and replaced.

Additional safety requirements may apply for work with OSHA designated Particularly Hazardous Substances. These include select carcinogens, reproductive toxins, and chemicals having a high degree of acute toxicity. The following controls are to be used as appropriate for the agent and process:

  • Establishment of a designated area;
  • Use of containment devices such as fume hoods or glove boxes;
  • Mandatory administrative controls and PPE;
  • Procedures for the safe removal of contaminated waste; and
  • Decontamination procedures.

Designated areas for particularly hazardous substances must be formally established by developing SOPs and posting appropriate signage. A designated area can be the entire laboratory, a specific laboratory workbench, or a laboratory hood. Designated areas must be clearly marked with signs that identify the hazard and include an appropriate warning. Signage is also required for all containers and storage locations. Entrances to designated work areas and storage locations must include signage, “AUTHORIZED PERSONNEL ONLY”, in addition to the specific hazard warning wording.

Access to areas where particularly hazardous substances are used or stored must be controlled and limited to trained personnel when particularly hazardous substances are in use.

Safety and Risk Services will conduct industrial hygiene surveys to evaluate chemical hazards for laboratory operations. Industrial hygiene surveys will include an assessment of the degree of worker exposures to chemicals and the evaluation of exposure control measures. The industrial hygiene survey may include any of the following:

  • Personnel interviews
  • Reviewing chemical inventories and Safety Data Sheets
  • Visual observation of laboratory operations/work practices
  • Evaluation of potential exposure routes
  • Evaluation of existing engineering controls
  • Evaluation of Personal Protective Equipment
  • Direct reading instrumentation

Where an industrial hygiene survey indicates workers might be exposed at or above an applicable occupational exposure limit, Safety and Risk Services will perform personal exposure monitoring to determine if exposures are within limits or if exposures need to be reduced. When necessary, utilizing the hierarchy of controls, will make recommendations to reduce exposures below occupational exposure limits.

Medical consultation and medical surveillance will be provided for those potentially exposed above-recognized standards or action levels, if there are signs or symptoms of workplace exposure, or if the employee or supervisor expresses concern overexposure and a need for medical consultation. See the sections on Medical Consultation and Medical Surveillance for more details.

All UNM employees, who work with hazardous chemicals shall have an opportunity to receive a free medical evaluation, including supplemental examinations which the evaluating physician determines necessary, under the following circumstances:

  • Whenever they develop signs or symptoms associated with a hazardous chemical to which the worker may have been exposed in a laboratory.
  • Where exposure monitoring reveals an exposure level routinely above the OSHA action level (or in the absence of an OSHA action level, the PEL or recommended exposure levels established by the National Institute for Occupational Safety & Health (NIOSH) or the American Conference of Governmental Industrial Hygienists (ACGIH)).
  • Whenever an event takes place in the work area such as a spill, leak, explosion, or other occurrence resulting in the likelihood of hazardous exposure.

All medical examinations and consultations will be performed by or under the direct supervision of a licensed physician and be provided without cost to the employee, without loss of pay and at a reasonable time and place.

Employees may obtain free medical consultation regarding concerns about chemical or other occupational exposures by contacting Employee Occupational Health Services (EOHS) at 272-8043. Students with concerns about chemical or other occupational exposures should contact Student Health Services at 277-7810. These medical services include reproductive health matters related to chemical exposures.

All employees who will potentially work with hazardous chemicals will have a pre-employment or an initial medical history and/or physical through Employee Occupational Health Services (EOHS). Employees with exposure to hazardous chemicals or other hazards that are covered under OSHA’s expanded standards shall be provided medical surveillance by EOHS as prescribed by the specific applicable OSHA standard.

Examples of hazards that are monitored through medical surveillance may include:

  • Asbestos
  • Benzene
  • Ethylene Oxide
  • Formaldehyde
  • Lead
  • Methylene Chloride
  • Noise (Hearing Conservation Program)
  • Respirator Use (Respiratory Protection Program)

Employees may be removed from medical surveillance when participation is no longer required due to a change in activities, jobs, exposure, etc.

Employees with questions regarding work-related medical surveillance should contact EOHS at 272-8043 or at 277-2753 for more information.

The laboratory Chemical Hygiene Officer shall conduct and document an annual self-audit to assess laboratory compliance with the laboratory Chemical Hygiene Plan. The UNM Laboratory Audit Form is attached.

All incidents must be reported to the supervisor and Safety and Risk Services immediately when safe to do so. Incidents may include work-related injuries, illnesses, property damage; spills or releases of hazardous substances, hazardous wastes, wastewater; regulatory violations. Priority must always be the safety and health, and appropriate medical treatment to those impacted by an incident. Notification to can be made by calling 505-277-2753 during working hours, or 505-951-0194 in off-working hours. After the initial notification, an incident reporting form must be completed by the person reporting the incident and submitted to . An incident reporting form can be downloaded from the website.

Lab workers, including students, must be provided the necessary training and understand the required spill response procedures before working with a hazardous chemical. It is the responsibility of the lab supervisor and/or chemical hygiene officer to provide training, provide spill control clean-up materials and personal protective equipment appropriate for the chemicals being handled readily available and accessible. The Chemical Hygiene Officer Handbook, with training guidelines, is attached.

A minor chemical spill is one that does not present an imminent danger to people, property, or the environment and the workplace staff is capable of handling safely without the assistance of safety and emergency personnel (no additional personal protective equipment or personnel are required beyond normal operations with the hazardous materials). Properly trained, lab workers may clean up smaller spills, following spill control, mitigation, clean up and reporting procedures given in the Chemical Spill Response Program in Safety and Risk Service Manual, or other approved lab or chemical-specific spill cleanup procedure developed for that specific lab, area or process. Spill kits with instructions, absorbents, reactants and appropriate personal protective equipment (PPE) are to be maintained by the lab for the clean-up of minor spills.

A major spill is a large spill or an acutely toxic spill. A major spill presents an imminent danger to people, property, or the environment, and is not easily controlled by the worker. Lab workers should only clean up major hazardous chemical spills after they have received appropriate training, and when appropriate spill cleanup materials and PPE are readily available and are properly utilized. Otherwise, in the event of a major spill for which personnel is not trained and prepared, and particularly if any person has been significantly exposed, contaminated or injured to such an extent that medical or other outside assistance is required, follow the E.A.R. steps:

Evacuate affected area and close doors;

Alert Campus Police by calling 911; and

Remain close to the phone, if requested to do so, until contacted by emergency responders.

All personnel potentially adversely affected in any way during an incident or accident should report for medical evaluation. Refer UNM employees exposed to hazardous chemical spills to Employee Occupational Health Services at 272-8043. Students are to be referred to Student Health Services 277-7810.

If any chemical spill occurs outside a building, with potential for adversely impacting stormwater quality, contact Safety and Risk Services at 277-2753. If this attempt fails, call Campus Police and request that the appropriate Safety and Risk Services staff be contacted. Manage all debris and waste resulting from the cleanup of a spill as though it contains the hazardous chemical, and in accordance with hazardous waste program.

Emergency Showers and Eye Wash Stations

Laboratories in which hazardous materials are used must be equipped with plumbed eyewash and safety showers. Safety showers must be located such that they are accessible, require no more than ten (10) seconds to reach from the location of the hazard and are within 55feet of the potential hazard. Eyewash units must be located such that they are accessible, require no more than ten (10) seconds to reach and are within 55 feet of the potential hazard (10 feet where strong corrosives are the hazard). NOTE: Remember the injured worker may have to locate the unit while blinded by a contaminant.

Eyewash and showers must be kept accessible. Material shall not be stored or placed in such a manner that would block access to an eyewash or shower. It is recommended that eyewash stations and safety showers be activated at least weekly. It is required that eyewash stations and safety showers be activated, inspected and maintained at least monthly.

Lab instructors/supervisors must train all persons that might be exposed to potentially injurious materials in the location and proper operation of eyewash, eye/face wash and safety shower units. Contact Safety and Risk Services for training materials or other assistance with this training.

All hazardous waste shall be managed and disposed of according to Hazardous Waste Program.

To request a hazardous waste pickup from , click here Request for Pick-up of Hazardous Waste and Excess Chemicals

Contact Safety and Risk Services at 277-2753 for assistance.

Regulatory Guidance

Chemical Laboratory Safety

Occupational Exposure Limits

Properties of Hazardous Chemicals

  • NIOSH Pocket Guide to Chemical Hazards Industrial hygiene information on several hundred chemicals/classes including information on OSHA PELs, exposure routes, exposure symptoms, target organs, and first aid. It also contains personal protective equipment recommendations including respiratory protection. Available free online as either an online resource or downloadable format.
  • ToxNet National Library of Medicine online toxicology, hazardous chemicals, environmental health, and toxic release databases. Available free online.
  • HazMap National Library of Medicine online information on the adverse effects of workplace exposure to chemical and biological agents. HazMap links hazardous chemicals, job tasks, industries, and occupational diseases. Available free online.
  • The Merck Index, 14th Edition. An encyclopedia of chemicals, drugs, and biologicals. It contains information on chemical and physical properties, hazard s and therapeutic category, if applicable.
  • Sax's Dangerous Properties of Industrial Materials, 12th Edition. Hazard reference source for 28,000 substances encountered in industry. It contains data on toxicology, flammability, reactivity, explosive potential, and regulatory information.
  • Bretherick's Handbook of Reactive Chemical Hazards, 7th Edition. Considered to be the best source of information on reactivity risks such as fire, explosion, toxic material releases or high energy events of chemicals alone and in combination. It contains more than 5,000 entries on single elements or compounds, and 5,000 entries on interactions between two more compounds.

Action level – A concentration designated by OSHA 29 CFR 1910 for a specific substance, calculated as an 8-hour time-weighted average, which initiates certain required activities such as exposure monitoring and medical surveillance.

Article – A manufactured item other than a fluid or particle: (i) which is formed to a specific shape or design during manufacture; (ii) which has end-use functions(s) dependent in whole or in part upon its shape or design during end use; and (iii) which under normal conditions of use does not release more than very small quantities, e.g., minute or trace amounts of a hazardous chemical, and does not pose a physical hazard or health risk to employees.

Authorized Chemical Worker – UNM faculty, staff, student, or visitor whose manager or supervisor has determined that he/she has the training, knowledge, skill, and abilities to safely perform the chemical work to which he/she is assigned.

Carcinogen – Any substance or mixture of substances that meet one of the following criteria:

  • It is regulated by OSHA as a carcinogen; or
  • It is listed under the category "known to be carcinogens", in Annual Report on Carcinogens published by the National Toxicology Program (NTP) (latest edition); or
  • It is listed under Group 1 ("carcinogenic to humans") by the International Agency for Research on Cancer Monographs (IARC) (latest edition); or
  • It is listed in either Group 2A or 2B by IARC or under the category, "reasonably anticipated to be carcinogens" by NTP and causes statistically significant tumor incidence in experimental animals under specified conditions.
  • A mixture shall be classified as a carcinogen when at least one ingredient has been classified as a carcinogen and is present at or above 0.1%.

Chemical – Any element, compound, or mixture of elements and compounds.

Chemical Hygiene Officer (CHO) – A UNM employee designated by his/her management who is qualified, either by education, training or experience, to provide technical guidance in the development and implementation of the provisions of the Chemical Hygiene Plan. All CHOs will take the Chemical Hygiene Officer training course annually.

Chemical and Laboratory Safety Committee (CLSC) – A committee of faculty and staff members for the purpose of helping UNM develop, consolidate and implement chemical and lab safety procedures and policy. It is comprised of representatives from Academic Affairs and Administration.

Container – Any bag, barrel, bottle, box, can, cylinder, drum, reaction vessel, storage tank, or the like that contains a hazardous chemical. Pipes or piping systems, and engines, fuel tanks, or other operating systems in a vehicle, are not considered to be containers

Corrosive – A chemical that causes visible destruction or permanent changes in human skin tissue at the site of contact.

Chemical Owner – An authorized chemical worker assigned ownership and responsibility for a chemical container in the chemical inventory system.

Designated area – An area that shall be established and posted for work with particularly hazardous substances and to which access is administratively restricted to authorized personnel. A designated area may be the entire laboratory, an area of a laboratory, or a device such as a laboratory fume hood.

Emergency – Any occurrence such as, but not limited to, equipment failure, rupture of containers or failure of control equipment which results in an injury or uncontrolled release of a hazardous chemical into the workplace or environment.

Globally Harmonized System (GHS) – OSHA revised its Hazard Communications standard in 2012 to bring it into harmony with the International Hazard Communication Standards promulgated by the United Nations. This requires standardization of labeling, formats for Safety Data Sheets (SDS), reporting, and other hazard communications between suppliers and users worldwide.

Hazardous chemical – Any chemical which is classified by OSHA (1910.1200) as a physical hazard or a health hazard, a simple asphyxiant, combustible dust, pyrophoric gas, or hazard not otherwise classified. If a hazardous chemical comprises 1% (0.1% for carcinogens) or greater of a compound or mixture, the compound or mixture will be treated as a hazardous chemical.

Hazardous Waste – Is defined by EPA as “(A) liquid, solid, contained gas, or sludge waste that contains properties that are dangerous or potentially harmful to human health or the environment”. EPA further defines hazardous waste as:

  • Waste exhibiting at least one of four characteristics: ignitability, corrosivity, reactivity, or toxicity; or
  • Waste appearing in one of the EPA lists (hazardous or acutely hazardous chemicals that have been used, or not, but no longer usable for its intended purpose). For a more detailed definition, go to EPA.

Health Hazard – A chemical which is classified as posing one of the following hazardous effects: acute toxicity (any route of exposure); skin corrosion or irritation; serious eye damage or eye irritation; respiratory or skin sensitization; germ cell mutagenicity; carcinogenicity; reproductive toxicity; specific target organ toxicity (single or repeated exposure); or aspiration hazard. The criteria for determining whether a chemical is classified as a health hazard are detailed in Appendix A to 29 CFR 1910.1200–Health Hazard Criteria.

High Acute Toxicity – Substances that may be fatal or cause clinical damage to target organs as a result of a single exposure of short duration. High acute toxicity chemicals meet the following criteria: a Permissible Exposure Limit (PEL) or Threshold Limit Value (TLV) of less than 0.1 ppm Time-Weighted Average (TWA) or ceiling limit of less than 1.0 ppm.

Immediate use – The hazardous chemical will be under the control of and used only by the person who transfers it from a labeled container and only within the work shift in which it was transferred.

Laboratory – A workplace where relatively small quantities of hazardous chemicals are used on a non-production basis, chemical manipulations are carried out on a “laboratory scale”, and multiple chemical procedures or chemicals are used.

Laboratory scale – Work with substances in which the containers used for reactions, transfers, and other handling of substances are designed to be easily and safely manipulated by one person. "Laboratory scale" excludes those workplaces whose function is to produce commercial quantities of materials.

Laboratory use of hazardous chemicals - handling or use of such chemicals in which all of the following conditions are met:

  1. Chemical manipulations are carried out on a "laboratory scale;"
  2. Multiple chemical procedures or chemicals are used;
  3. The procedures involved are not part of a production process, nor in any way simulate a production process; and
  4. "Protective laboratory practices and equipment" are available and in common use to minimize the potential for employee exposure to hazardous chemicals.

Medical consultation – Consultation which takes place between a licensed physician and an employee [or student] for the purpose of determining what medical examinations or procedures, if any, are appropriate in cases where a significant exposure to a hazardous chemical may have taken place.

Must – Designates a contractual or policy requirement or a regulatory mandate.

Mutagen – A chemical that causes permanent changes in the amount or structure of the genetic material in a cell. Chemicals classified as mutagens in accordance with the Hazard Communication Standard (29 CFR 1910.1200) shall be considered mutagens for purposes of this section.

Occupational Exposure Limit (OEL) – Occupational Exposure Limit values are set by competent national authorities or other relevant national institutions as limits for concentrations of hazardous compounds to which employees are exposed in the workplace. For purposes of this document, the applicable OELs are OSHA PELs and ACGIH Threshold Limit Values (see definitions below).

Particularly Hazardous Substances – Particularly hazardous substances (PHS) are those chemicals with special acute or chronic toxicity. The OSHA Laboratory Standard defines a PHS as being a select carcinogen, reproductive toxin, or a Substance with a High degree of Acute toxicity. In the Laboratory Standard, OSHA does not provide a list of PHSs because new chemicals are continually being developed and tested in laboratories. The OSHA Laboratory Standard requires areas where PHS are used to be designated with signage, and have SOPs for safe use of chemicals that are PHSs.

Permissible Exposure Limit (PEL) – The maximum 8-hour time-weighted average concentration, or short-term exposure limit, of an airborne contaminant that shall not be exceeded under OSHA standards.

Physical hazard – A chemical that is classified as posing one of the following hazardous effects: Explosive; flammable (gases, aerosols, liquids, or solids); oxidizer (liquid, solid, or gas); self-reactive; pyrophoric (gas, liquid or solid); self-heating; organic peroxide; corrosive to metal; gas under pressure; in contact with water emits flammable gas; or combustible dust. The criteria for determining whether a chemical is classified as a physical hazard are in Appendix B of the Hazard Communication Standard (29 CFR 1910.1200).

Professional Visitor – An individual with advanced science, engineering or related education, experienced working independently in a similar laboratory and will be temporarily working independently in a UNM laboratory.

Safety Data Sheet (previously known as Material Safety Data Sheet) – Written printed, or electronically transmitted document concerning a hazardous chemical that is prepared in accordance with paragraph (g) of 29 CFR 1910.1200.

Standard Operating Procedure (SOP) – Documented procedures relevant to safety and health considerations to be followed when laboratory work involves the use of hazardous chemicals (OSHA 1910.1450).

Reproductive toxins - Chemicals that affect the reproductive capabilities including adverse effects on sexual function and fertility in adult males and females, as well as adverse effects on the development of the offspring. Chemicals classified as reproductive toxins in accordance with the Hazard Communication Standard (29 CFR 1910.1200) shall be considered reproductive toxins for purposes of this section. The Proposition 65 list developed by the State of California is one source of information about chemicals known to cause birth defects or other reproductive harm.

Secondary container – Any chemical container other than an original container that will be used to store decanted chemicals or mixed chemicals beyond a single workday. (Note: This definition should not be confused with secondary containment for chemical release prevention control.)

Shall – Designates a UNM policy or regulatory mandate.

Should – Designates a recommendation contained in the regulations or a recommendation from a recognized industry standard.

Substances with a High Acute Toxicity – High acute toxicity includes any chemical that falls within any of the following OSHA-defined categories:

  • A chemical with a median lethal dose (LD50) of 50 mg or less per kg of body weight when administered orally to certain test populations.
  • A chemical with an LD50 of 200 mg less per kg of body weight when administered by continuous contact for 24 hours to certain test populations.
  • A chemical with a median lethal concentration (LC50) in air of 200 parts per million (ppm) by volume or less of gas or vapor, or 2 mg per liter or less of mist, fume, or dust, when administered to certain test populations by continuous inhalation for one hour, provided such concentration and/or condition are likely to be encountered by humans when the chemical is used in any reasonably foreseeable manner.

Threshold Limit Values (TLVs) – Threshold Limit Values, which are established by the American Conference of Governmental Industrial Hygienists (ACGIH), refer to airborne concentrations of chemical substances and represent conditions under which it is believed that nearly all workers may be repeatedly exposed, day after day, over a working lifetime, without adverse health effects. These include: 8-hour time-weighted averages (TLV–TWAs), short-term 15-minute time-weighted averages (TLV–STELs), and ceiling limits (TLV–Cs).

Threshold Limit Value—Time–Weighted Average (TLV–TWA) – The time-weighted average concentration that should not be exceeded for a conventional 8-hour workday and a 40- hour workweek.

Threshold Limit Value—Short-Term Exposure Limit (TLV–STEL) – A 15-minute TWA exposure that should not be exceeded at any time during a workday, even if the 8-hour TWA is within the TLV–TWA.

Threshold Limit Value—Ceiling (TLV–C) – The concentration that should not be exceeded during any part of the working exposure.

Will – Designates a UNM policy or standard practice or regulatory mandate.

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