School Laboratory Chemical Hygiene & Safety Plan Presented by the Presented by the Office of Environmental Health and Safety Office of Environmental Health and Safety Los Angeles Unified School District Los Angeles Unified School District

Chemical Hygiene and Safety Plan (CHSP) To comply with Title 8, California Code of Regulations (CCR), Section 5191 To protect employees who work in laboratories from health hazards associated with hazardous chemicals

Definitions PEL: Permissible Exposure Limit. The highest concentration of a chemical that an individual can be exposed to, averaged over the duration of an 8-hour work shift.PEL: Permissible Exposure Limit. The highest concentration of a chemical that an individual can be exposed to, averaged over the duration of an 8-hour work shift. TLV: Threshold Limit Value. The highest concentration of a chemical that an individual can be exposed to at any time during his/her work shift. TLV: Threshold Limit Value. The highest concentration of a chemical that an individual can be exposed to at any time during his/her work shift. LD50: A measure of toxicity involving the use of laboratory animals to determine the dose of a given chemical at which death will occur in half of the test population. LD50: A measure of toxicity involving the use of laboratory animals to determine the dose of a given chemical at which death will occur in half of the test population. PPE: Personal Protective Equipment. Examples include respirators and air purifying cartridges, gloves, chemical splash goggles, boots/shoe covers, and Tyvek coveralls. PPE: Personal Protective Equipment. Examples include respirators and air purifying cartridges, gloves, chemical splash goggles, boots/shoe covers, and Tyvek coveralls.

Chemical Hygiene & Safety Plan Organization Chart Principal/ Site Administrator Science Teacher Plant Manager Chemical Safety Coordinator Office of Environmental Health and Safety

Responsibilities Principal/Site Administrator Ensure implementation of the Chemical Hygiene & Safety Plan in school laboratories Assign Chemical Safety Coordinator to train affected staff on CHSP requirements Chemical Safety Coordinators (CSCs) Provide training to affected staff on CHSP and Hazard Communication requirements Perform health and safety inspections monthly Conduct chemical inventory annually Maintain Material Safety Data Sheets (MSDS) Attend three training meetings per fiscal year Arrange for removal of outdated chemicals Maintain documents such as training sign-in sheets, chemical inventory, CSC activity checklist and monthly inspection checklist

Responsibilities Science Teachers Plan and conduct each laboratory operation/activity in accordance with the District’s CHSP Maintain an annual inventory of laboratory chemicals and their MSDS Provide regular chemical hygiene, safety and housekeeping inspections Observe proper chemical hygiene and safety work practices Instruct students in safe work practices and procedures Office of Environmental Health and Safety (OEHS) Work with school principals, CSCs, and teachers to help implement school chemical hygiene & safety plans Provide training to CSCs Provide technical assistance to schools and employees on the CHSP

Routes of Entry There are three main routes by which chemical substances can enter the body: Inhalation by breathing dusts, fumes, mists or vapors Ingestion by eating or drinking with contaminated hands or in a contaminated laboratory Absorption through the skin or eye by contact with liquid, dusts, fumes, mists or vapors.

Requirements Develop and implement CHSP in school laboratories Inform and train affected employees in: º Hazard recognition and classification º Standard operating procedures º Minimization and control of hazards by engineering and administrative controls º Proper labeling and disposal of hazardous materials and wastes º Recordkeeping requirements of chemical inventories

Hazard Recognition and Classification Physical Safety Hazards Chemical Health Hazards Chemical Classes and Their Effects

Physical Safety Hazards Compressed gas – High pressure gas or mixture of gases in the container Combustible liquid – Flash point above 100º F but below 200º F Explosive – A chemical that causes a sudden release of pressure, gas and heat Flammable liquid – Flash point below 100º F Flammable solid – Liable to cause fire through friction, absorption of moisture, or spontaneous change Oxidizer – A chemical that initiates or promotes combustion in other materials Reactive – A chemical that will vigorously polymerize, decompose, condense, or will become self-reactive under conditions of shock, pressure or temperature Water-reactive – A chemical that reacts with water to release a gas that is either flammable or presents a health hazard

Chemical Health Hazards Carcinogen – A chemical that is capable of causing cancer Corrosive – A chemical that causes visible destruction of living tissue by chemical action at the site of contact Toxic – A substance with the potential of having the effect of a poison or something harmful to the body Irritant – A chemical that causes a reversible inflammatory effect on living tissue, skin or eyes by chemical action at the site of contact Sensitizer – A chemical that causes an allergic reaction in normal tissue after repeated exposure to the chemical

Chemical Classes and Their Effects Acids – Corrosive to skin and mucous membranes Alcohols – Blindness and central nervous system (CNS) depressants Aldehydes and ketones – Irritate and have narcotic effects Aliphatic – Central nervous system depressants and asphyxiants. Some are neurotoxins Alkalies – Severe tissue burns and bronchial spasms Asphyxiants – Reduces the oxygen carrying capacity of the blood or displaces atmospheric oxygen Compounds of sulfur, – Corrosive to the skin and destructive to respiratory phosphorus, nitrogen tissues Halogens – Corrosive and highly irritating to tissues Metal fumes/vapors - Systemic poisoning

Standard Operating Procedures General safe work practices º Familiarize with the potential hazards of various chemical substances º Avoid unnecessary exposure to chemicals by any route º Wash areas of exposed skin before leaving the laboratory º Do not eat, drink, smoke, gum chew, or apply of cosmetics in laboratory º Do not keep food and drink in the laboratory º Do not use laboratory glassware or utensils for food or beverages º Do not allow practical jokes º Confine long hair and loose clothing º Avoid wearing open-toed shoes º Wear protective clothing and goggles º Do not work alone in the laboratory º Never leave an experiment unattended º Do not use mouth suction for piping or starting a siphon Work safely with laboratory equipment and chemicals Store chemicals properly Warning signs and labels

Hazard Controls Minimize all chemical exposures Engineering controls º General laboratory ventilation º Fume hoods Personal protective equipment º Use appropriate PPE such as aprons, laboratory coats, laboratory aprons, gloves, goggles, face shields Administrative controls º Use only those chemicals in quantities whose chemical concentrations can be controlled by the existing ventilation system º Order should not exceed what is expected to be used in one year

Handling of Chemicals Labeling 1. Identity of contents. 2. Date chemical was acquired 3. Disposal date (for unstable chemicals). 4. Responsible person. 5. Hazardous characteristics. 6. Other pertinent safety information. Storage 1. MSDS sheets must be available for all chemicals. 2. All chemicals must be properly labeled and inventoried. 3. Do not store chemicals on top of lab benches, out in open, or above eye label. 4. Storage in hoods is not recommended. 5. Keep incompatible chemicals separated. 6. Flammables stored in flammable storage cabinet. 7. All cabinets containing chemicals must be labeled.

Disposal All hazardous waste containers must be properly labeled with the name and address of the school, composition and physical state of the waste, and accumulation date. Fill-out this form and fax to OEHS at (213)

Spills Clean-up minor spills of diluted chemicals, nonvolatile or toxic using procedures listed on the MSDS Wear appropriate protective apparel such as gloves and aprons Evacuate the area if a volatile, flammable, toxic and/or concentrated material is spilled. Notify OEHS at (213) immediately.

Chemical Inventory Records An inventory of all chemicals stored in each school An inventory of all chemicals stored in each school building shall be conducted annually and chemical building shall be conducted annually and chemical usage determined. usage determined. Inventory information shall include the chemical name, Inventory information shall include the chemical name, quantity, hazard information, and storage location. quantity, hazard information, and storage location. Inventory and chemical order records are to be Inventory and chemical order records are to be maintained by the Chemical Safety Coordinator, Site maintained by the Chemical Safety Coordinator, Site Administrator, or Science Chairperson, with a copy sent Administrator, or Science Chairperson, with a copy sent to OEHS. to OEHS.

“ A commitment to purchase a chemical is a commitment to handle and store the chemical safely and to dispose of the chemical in an environmentally acceptable fashion.”

Chemical Safety what’s the big deal?