Centre College Chemical Hygiene Plan
Table of Contents
POLICY AND RESPONSIBILITIES WITHIN THE CHP
COLLEGE'S CHEMICAL HYGIENE PLAN
OF CHO AND THE DIVISION III SAFETY COMMITTEE
MEASURES AND EQUIPMENT FOR HAZARDOUS CHEMICALS
PROCEDURES FOR PARTICULARLY HAZARDOUS CHEMICALS
TRAINING AND INFORMATION
CONSULTATION AND EXAMINATION
OF USED CHEMICALS
I prepared this Chemical Hygiene Plan for Centre College during the summer
of 1991. Although I wrote substantial parts of the plan, I do not claim
its authorship. In the preparation of this plan, I consulted 29 CFR 1910
and several plans from other institutions. What was found was a wealth
of pertinent, useful information expressed in more than one document in
exactly; or virtually identical language, without reference. It proved
to be impossible to determine the original author(s). I inferred that it
was common practice in these plans to use substantial amounts of written
information without the usual referencing and quoting of materials found
in more scholarly work. I have also, uneasily, followed this approach.
If it is important to know what is my original work and what was used from
other sources, I will provide that information. In closing, let me indicate
that substantial material is included herein, without the usual referencing,
from three sources: Model Chemical Hygiene Plan for Kentucky School Districts
by M. N. Howard and F. B. Howard, Developing a Chemical Hygiene Plan by
J. A. Young, W. K. Kingsley, and G. H. Wahl, Jr., and A Model Chemical
Hygiene Plan for Laboratories by T. J. Gile.
Prepared by: Marshall Wilt
The January 31, 1990 Federal Register (pages 3300-3335) published OSHA's
"Laboratory Standard" applicable to certain employers some of whose employees
work with hazardous chemicals. It is commonly accepted that colleges such
as Centre College meet the criteria for applicability for the Laboratory
Standard and are hence subject to its regulation as stated in 29CFR1910.1450.
The state of Kentucky, through its own OSHA, has adopted the federal Laboratory
Standard and is thus Centre's immediate governmental regulatory agency
in this area. One mandatory aspect of the Laboratory Standard is the development
of a Chemical Hygiene Plan (CHP). This document is a statement of Centre's
OSHA (Federal Register/Vol. 55, No. 21, p. 3328) defines a hazardous
chemical as one "for which there is statistically significant evidence
based on at least one study conducted in accordance with established scientific
principles, that acute or chronic health effects may occur in exposed employees."
This is a very broad definition which applies to numerous chemicals commonly
used in science education. The purpose of the Lab Standard is to protect
employees from exposure to potentially harmful levels of hazardous chemicals.
Centre shall strive to extend that protection to its employees and also
its students. The Lab Standard is a performance standard in that it relates
to achieving certain protective results; it does not rigidly specify procedures
for obtaining results: it gives employers the latitude to decide upon institutionally-appropriate
procedures for providing protection from exposure to hazardous chemicals.
It is within this context that the following CHP has been developed.
GENERAL POLICY AND RESPONSIBILITIES WITHIN THE CHP
Centre College strives to provide a safe laboratory environment for its
employees and students, and believes that these groups have the right to
know about potential health hazards associated with their work with chemicals.
Upon request, the College through its CHP will provide descriptions of
our policies regarding laboratory safety, procedure, potential hazards,
and training to appropriate employees and students. Centre encourages them
to make suggestions concerning chemical safety to the Chemical Hygiene
Officer (CHO) identified below.
The President as chief administrative officer ultimately carries responsibility
for safety in Centre's chemical operations. He may choose to delegate some
parts of that responsibility to his chief instructional officer, the Dean
of the College. The College shall appoint a Chemical Hygiene Officer who
reports to the President or his delegate, the Dean of the College, and
has the responsibility of developing and implementing the CHP. In these
responsibilities the CHO will work with the Chair of the Division of Science
and Mathematics and with the College Safety Committee described below.
Part of the responsibility of the CHO is the training of faculty, staff,
and student assistants who work with hazardous chemicals.
Each laboratory-teaching faculty or staff member is responsible for
planning and conducting laboratory work consistent with the CHP and other
relevant safety considerations. These members have the responsibility of
ensuring that their student assistants follow appropriate safety practices
and that enrolled students do likewise. Students have the responsibility
of following the CHP and should be required to sign a form stating that
they have been provided relevant safety instructions. Other Centre supervisors
whose employees use hazardous chemicals must insure that those people follow
the CHP. Where appropriate Centre's employees should consult the CHO for
advice on the planning and implementation of safe practices for the use
The CHO shall occasionally monitor operations to ensure that practice
is consistent with the CHP.
If a disagreement regarding safety develops between a laboratory teaching
faculty or staff member, or another employee, and the CHO, and the matter
cannot be resolved in discussions involving the Division III Chair or the
Director of Public Safety, the CHO will report the matter to the Dean of
CENTRE COLLEGE'S CHEMICAL HYGIENE PLAN
The materials below constitute Centre's CHP. Some of the vocabulary is
not in general use and is used in a specific, sometimes technical manner.
The reader is referred to Appendix E for a glossary of relevant terms.
Copies of the CHP are readily available through the CHO, Division III faculty
whose teaching utilizes chemicals, the art program, the Director of Public
Safety, and the staff of the Director of the Physical Plant.
IDENTIFICATION OF CHO AND THE DIVISION III SAFETY COMMITTEE
Centre's CHO is Cheryl Mayes, Physical Sciences Lab Coordinator and Campus
Safety Officer. Her office is in Olin 021, and her telephone numbers are:
(859) 238-8745 (office) and 222-6780 (pager).
The College Safety Committee shall consist of the members appointed
by the Division III Chairperson and will assist the CHO in the implementation
of the CHP.
STANDARD OPERATING PROCEDURES
The following standard procedures will be used when working with hazardous
chemicals. This section is adopted from Young, Kingsley and Wahl.
As this applies to laboratory, note that the instructor is responsible.
Please see Appendix 1 for Guidelines on Inventory Management in Division
When working with chemicals, all employees and students should know and
constantly be aware of:
DO NOT work alone with hazardous chemicals unless hazards are minimal.
In this case inform someone else whom you can immediately contact and who
can quickly render assistance.
Wear appropriate eye protection at all times; the use of contact lenses
is discouraged and is done at the risk of the individual. Contact lenses
must be covered with safety goggles.
When working with flammable chemicals, be certain that there are no sources
of ignition near enough to cause a fire or explosion in the event of a
vapor release or liquid spill.
Use a tip-resistant shield for protection whenever there is significant
hazard of an explosion or implosion.
Do not engage in practical jokes or horseplay which might distract or startle
Segregate broken glass and discarded hypodermic needles from each other
and other trash.
The chemicals' hazards, as determined from the MSDS and other appropriate
references. Relevant copies of MSDS's are found in the stockrooms of Olin
and Young Halls, or are held by the Art Program and by the staff of the
Director of Physical Plant. The Director of Public Safety also has a master
file of MSDS's.
Appropriate safeguards for using each chemical, including personal protective
The location and proper use of emergency equipment.
How and where to properly store chemicals when not in use.
Proper personal hygiene practices.
The proper methods of transporting chemicals within the facility.
Appropriate procedures for emergencies, including evacuation routes, spill
cleanup procedures and proper waste disposal. In particular, for eye contact,
promptly rinse eyes in an eye wash for 15 minutes and seek medical attention
if necessary. For ingestion, drink large amounts of water and seek a physician
if necessary. For skin contact, rinse the affected area with water and
remove affected clothing. Use a safety shower if exposure is wide- spread
If symptoms persist after prolonged washing, seek a physician's attention.
For spills, consider safety of people first, and use appropriate methods,
equipment, and disposal procedures for clean up. See Appendix A.
In general it is bad practice and potentially dangerous to inhale chemical
vapors. Do not "sniff" to test chemicals unless you are instructed to do
so and supervised by a faculty member.
Do not use mouth suction to pipet anything; use suction bulbs or other
Wash well with soap and water after using chemicals; do not wash with solvents.
Do not drink, eat, smoke, or apply cosmetics in the laboratory.
Do not bring food, beverage, tobacco, or cosmetic products into chemical
storage or use areas. Do not store these products in laboratory refrigerators
or cold rooms, or use laboratory glassware for eating.
Wear long sleeves, long pants, and closed-toe shoes.
Protective Clothing and Equipment
Eye protection worn when working with chemicals should meet the requirements
of the American National Standards Institute (ANSI) Z87.1. When working
with large volumes of a corrosive liquid, also wear a face shield large
enough to protect the chin, neck, and ears, as well as the face.
When working with corrosive liquids, also wear gloves made of material
known to be resistant to permeation by the corrosive chemical.
Wear either a high necked, calf- or ankle-length, laboratory apron or a
long sleeve, calf- or ankle-length, chemical- and fire-resistant laboratory
coat when necessary. Confine long hair and loose clothing.
When working with allergenic, sensitizing, or toxic chemicals, wear gloves
made of material known to be or tested and found to be resistant to permeation
by the chemical.
Whenever exposure by inhalation is likely to exceed the threshold limits
described in MSDS's [see below], use a hood; if this is not possible, a
proper respirator must be worn. Consult with your supervisor before doing
any such work. See Appendices C and G.
Carefully inspect all protective equipment before using. Do not use defective
Access to emergency equipment, showers, eyewashes, and exits should never
be blocked by anything, not even a temporarily parked chemical cart.
All chemical containers must be labeled with at least the identity of the
contents and the hazards those contents present to users. Use diamond shaped
labels. Include date and initials
Keep all work areas, especially laboratory benches, clear of items not
necessary to work being performed.
Keep all aisles, hallways, and stairs clear of all chemicals.
All chemicals should be placed in their assigned storage areas at the end
of each week.
By the end of each week, the contents of all unlabeled containers are to
be considered unwanted chemicals, see Disposal
of Used Chemicals
Unwanted or used chemicals should be properly labeled and kept in their
All working surfaces and floors should be cleaned regularly.
No chemicals are to be stored in aisles or stairwells, on desks or laboratory
benches, on floors or in hallways.
PROCEDURE-SPECIFIC SAFETY PROCEDURES
All laboratory instructions to students must contain a written description
of specific safety practices incorporating the applicable precautions described
in the following five sections. Instructors should ensure that students
are aware of these practices before commencing a procedure. Employee supervisors
should do likewise. Always plan operations to use the minimum quantities
of the safest materials consistent with the objective.
Procedures for Toxic Chemicals
The MSDS's for many of the chemicals used in the laboratory will state
recommended limits or OSHA-mandated limits, or both, as guidelines for
exposure. Typical limits are threshold limit values (TLV), permissible
exposure limits (PEL), and action levels. When such limits are stated,
they will be used to assist the instructor and chemical hygiene officer
in determining the safety precautions, control measures, and safety apparel
that apply when working with toxic chemicals. Consult the CHO and/or Appendix
C for PEL values of chemicals under consideration for laboratory use. Pay
particular attention to Table Z-2 for substance-specific standards.
When a TLV or PEL value is less than 50 ppm or 100 mg/m3, the user of the
chemical must use it in a properly operating fume hood, glove box, vacuum
line, or similar device, which is equipped with appropriate traps and/or
scrubbers. If these devices are not available, no work should be performed
using that chemical.
If a TLV, PEL, or comparable value is not available for that substance,
the animal or human median inhalation lethal concentration information,
LC will be assessed. If that value is less than 200 ppm or 200 mg/m3 (when
administered continuously for one hour or less), then the chemical must
be used in an operating fume hood, glove box, vacuum line, or similar device,
which is equipped with appropriate traps and/or scrubbers. If none is available,
no work should be performed using that chemical. See MSDS's and/or the
CHO for relevant data.
Whenever laboratory handling of toxic substances with moderate or greater
greater pressures will be likely to exceed air concentration limits, laboratory
work with such liquids and solids will be conducted in a fume hood, glove
box, vacuum line, or similar device, which is equipped with appropriate
traps and/or scrubbers. If none are available, no work should be performed
using the chemical.
Additional special procedures apply to "acutely " toxic chemicals, as explained
Procedures for Flammable Chemicals
In general, the flammability of a chemical is determined by its flash point,
the lowest temperature at which an ignition source can cause the chemical
to ignite momentarily under certain controlled conditions.
Chemicals with a flash point below 200 degrees F (93.3 degrees C) will
be considered "fire hazard chemicals."
OSHA standards and the National Fire Protection Association (NFPA) guidelines
on when a chemical is considered flammable apply to the use of flammable
chemicals in the laboratory. In all work with fire-hazard chemicals, follow
the requirements of 20CFR, subparts H and L; NFPA Manual 30, "Flammable
and Combustible Liquids Code"; and NFPA Manual 45, "Fire Protection for
Laboratories Using Chemicals." Consult labels and MSDS's for relevant data.
Procedure for Reactive Chemicals
A reactive chemical is one that:
Is described as such on the container label or the MSDS.
Is ranked by the NFPA as 3 or 4 for reactivity.
Is identified by the DOT as
Fits the EPA definition of reactive in 40CFR261.23.
Fits the OSHA definition of unstable in 29CFR 1910.1450, or
Is known or found to be reactive with other substances.
Handle reactive chemicals with all proper safety precautions, including
segregation in storage and prohibition on mixing even small quantities
with other chemicals without prior approval and appropriate personal protection
and precautions. See MSDS's for safety procedures.
An organic peroxide, or
An explosive, Class A, B, or C
Procedures for Corrosive Chemicals and Contact Hazard Chemicals
Corrosivity, allergenic, and sensitizer information is sometimes given
in manufacturers' MSDS's and on labels. Also, guidelines on which chemicals
are corrosive can be found in other OSHA standards and in regulations promulgated
by DOT in 49CFR and the EPA in 40CFR.
A corrosive chemical is one that:
A contact-hazard chemical is an allergen or sensitizer that:
Fits the OSHA definition of corrosive in Appendix A of 29CF 1910.1200.
Fits the EPA definition of corrosive in 40CRF261.22 (has a pH greater than
12 or less than 2.5), or
Is known or found to be corrosive to living tissue.
Except as noted in 1 of the section on PROTECTIVE
CLOTHING AND EQUIPMENT, handle corrosive chemicals with all proper
safety precautions, including wearing both safety goggles and face shield,
gloves tested for absence of pin holes and known to be resistant to permeation
or penetration, and a laboratory apron or laboratory coat.
Is so identified or described in the MSDS or on the label.
Is so identified or described in the medical or industrial hygiene literature,
Is known or found to be an allergen or sensitizer.
Procedures for Teratogenic, Magnetic and Carcinogenic Chemicals
Chemicals in these categories are often identified as such on the appropriate
MSDS's. A partial list of carcinogenic and teratogenic materials is included
as Appendix H. Also see table 2-2 in Appendix C. Contact the CHO for advice
in the case of uncertainty.
Follow the operating procedures for these materials as given on the MSDS.
Be aware that "select" carcinogens and some mutagenic and teratogenic compounds
require the use of a designated area as described below. Carefully consider
using a designated area when working with mutagenic or teratogenic materials.
CONTROL MEASURES AND EQUIPMENT FOR HAZARDOUS CHEMICALS
Chemical safety is achieved by continual awareness of chemical hazards
and by keeping the chemical under control by using precautions, including
engineering safeguards such as hoods.
Laboratory personnel and other employees should be familiar with the
precautions to be taken, including the use of engineering and other safeguards.
All engineering safeguards and controls must be properly maintained, inspected
on a regular basis, and never overloaded beyond their design limits.
Laboratory ventilation should be not less than ten air changes per hour
(calculated). This flow is not necessarily sufficient to prevent accumulation
of chemical vapors. Work with toxic chemicals that have low air concentration
limits, or that have high vapor pressures, should always be done in a hood.
Fume hoods must provide adequate air flow. For Olin Hall fume hoods,
adequate flow is defined in the Thermal Balance test report dated November,
1988. This report specifies a flow rate of 760 CFM for four-foot hoods,
and 1750 CFM for eight-foot hoods. Auxiliary air flow is to be 532 CFM
for a four-foot hood, 1225 CFM for an eight-foot hood. Tolerances are +
10%. Other fume hoods such as those in Young Hall must provide a minimum
area- weighted average flow speed of 80ft/min.
Users of fume hoods should be able to recognize obviously low air flow
rates. Users should consciously check to see that air flow appears normal.
Do not use a hood whose air flow appears abnormally low.
Laboratory employees should understand and comply with the following:
Air flow in chemical storage areas shall give not less than ten air changes
per hour (calculated).
Air flow rates for laboratory ventilation, fume hood exhaust (and auxiliary
where appropriate) and chemical store room ventilation shall be monitored
just before each long term. This monitoring is the responsibility of the
Chemical Hygiene Officer. Discrepancies, if any, will be corrected before
use by our plant engineering staff supervised by Centre's Director of Physical
Plant. A fume hood or laboratory with a serious air flow discrepancy (less
than 50% of design flow as defined above) must not be used.
A fume hood is a safety backup for condensers, traps, or other devices
that collect vapors and fumes. It is not used to "dispose" of chemicals
by evaporation unless the vapors are trapped and recovered for proper waste
The apparatus inside the hood should be placed on the floor of the hood
at least six inches away from the front edge.
Fume hood windows should be lowered (closed) at all times except when necessary
to raise (open) them to adjust the apparatus that is inside the hood.
The hood fan should be kept "on" whenever a chemical is inside the hood,
whether or not any work is being done in the hood.
Personnel should be aware of the steps to be taken in the event of power
failure or other hood failure.
Hoods should never be used as storage areas for chemicals, apparatus, or
other materials. Chemicals can be left overnight in a running hood as part
of a continuing process. However, this practice is to be minimized.
In the laboratory, fire-hazard chemicals (section VI b) in quantities greater
than 500 ml should be kept in metal safety cans designed for such storage.
The cans should be used only as recommended by the manufacturer, including
the following safety practices:
Cabinets designed for the storage of flammable materials should be properly
used and maintained. Read and follow the manufacturer's information and
and also follow these safety practices:
Never disable the spring-loaded closure.
Always keep the flame-arrestor screen in place; replace if punctured or
Store only compatible materials inside a cabinet.
Do not store paper or cardboard or other combustible packaging material
in a flammable-liquid storage cabinet.
The manufacturer establishes quantity limits for various sizes of flammable-liquid
storage cabinets; do not overload a cabinet.
Eyewash Fountains and Safety Showers
Eyewash fountains and safety showers shall be checked monthly during academic
year to ensure proper operation and adequate water flow. Inspection is
the responsibility of the Chemical Hygiene Officer, while prompt corrective
action is the responsibility of the Director of the Physical Plant.
Be sure that access to eyewash fountains and safety showers is not restricted
or blocked by temporary storage objects or in any other way.
Employees should wear respirators whenever it is possible that engineering
controls or work practices could become or are ineffective and that employees
might be exposed to vapor or particulate concentrations greater than the
PEL, action level, TLV, or similar limit, whichever is the lowest.
The requirements of 29CFR 1910.134 should be followed, including in particular:
Written standard operating procedures governing the selection and use of
All employees who are likely to need to use respirators must be trained
in their proper use, inspection, and maintenance. See section XI and Appendix
G for information on the use of respirators.
SPECIAL PROCEDURES FOR PARTICULARLY HAZARDOUS CHEMICALS
Follow the procedures described below when performing laboratory work involving
more than 10 mg of a particularly hazardous chemical. In particular, work
only in designated areas. You must consult the CHO before beginning work
with an inimical chemical.
Particularly hazardous chemicals (inimical chemicals) are members of one
or more of these four categories: select carcinogens, teratogens or other
reproductive toxins, acutely toxic chemicals, and chemicals whose toxic
Properties are unknown.
Select carcinogens are materials defined as such in 29CFR1910.1450 or described
as such on the applicable MSDS.
Teratogens and/or reproductive toxins are chemicals described as such on
the applicable MSDS.
Acute toxic chemicals are materials for which the LD50 data lead to a description
in the applicable MSDS as "highly" or "acutely" toxic. Chemicals of unknown
toxicity are ones for which there is no known statistically significant
study to establish toxicity.
A designated area is a hood, glove box, laboratory or portion thereof,
Designated as the only area where work can be performed with certain quantities
of particularly hazardous chemicals.
Designated areas shall be posted and their boundaries clearly marked. Only
those persons trained to work with inimical chemicals will work with those
chemicals in a designated area. All such persons will:
Store all inimical chemicals in locked and enclosed spaces (e.g., locked
chemical storeroom) with a slight negative pressure compared to the rest
of the building.
Because the decontamination of jewelry may be difficult or impossible,
do not wear jewelry when working in designated areas.
Wear long-sleeved disposable clothing and gloves known to resist permeation
by the chemicals to be used when working in designated areas.
Use the smallest amount of chemical that is consistent with the requirements
of the work to be done.
Use high-efficiency particulate air (HEPA) filters or high- efficiency
scrubber systems to protect vacuum lines and pumps.
Store inimical chemicals or remove them from storage.
Decontaminate a designated area when work is completed.
Prepare wastes from work with inimical chemicals for waste disposal in
accordance with specific disposal procedures consistent with the Resource
Conservation and Recovery Act (RCRA) and as designated by Centre's CHO.
EMPLOYEE TRAINING AND INFORMATION
The aim of the employee training and information program is to assure that
all individuals at risk are adequately informed about: the physical and
health hazards associated with hazardous chemicals present in the laboratory;
the proper procedures to minimize risk of exposure; and the and the proper
response to accidents.
It is the responsibility of the Chemical Hygiene Officer to conduct
employee training sessions at least annually. All faculty graduate and
student assistants whose teaching involves hazardous chemicals shall be
trained as shall other employees (e.g., custodians and their supervisors)
whose work assignments may bring them into contact with hazardous chemicals.
The Chemical Hygiene Officer may, if convinced that certain individuals
already possess necessary information, excuse these individuals from training
sessions. Also, if new student assistants are added after initial training
at the beginning of an academic year, the Chemical Hygiene Officer may
instruct these students' supervisor to administer the necessary training.
The CHO will maintain the records of the training received by each employee.
The training of employees generally shall include the following:
The chemical hygiene standards, including the contents of 29 CFR Part 1910.1450;
Location and contents of Centre's Chemical Hygiene Plan;
Safe practices for handling hazardous chemicals and transporting them within
The evaluation of hazards of chemicals on hand at Centre, including PEL's
or other exposure limits;
Labeling and storage practices, and information to interpret labels;
Information on concepts necessary to understand reference materials, such
as PEL, TLV, and LD .
Location and content of MSDS's for chemicals in the school building, as
well as other reference materials on the properties, safe handling, storage,
and disposal of hazardous chemicals.
Location and proper use of available protective apparel and equipment.
The evaluation of signs and symptoms associated with exposures to hazardous
chemicals used in the laboratory.
Methods and observations to detect the presence or release of hazardous
Appropriate procedures for responding to and reporting accidents involving
MEDICAL CONSULTATION AND EXAMINATION
In the event that an employee is routinely exposed to levels of a hazardous
chemical exceeding the PEL or TLV, or should an employee report or be observed
to exhibit signs or symptoms of such an exposure, or if there has been
an accident in which an employee probably received such an exposure, then
the employee shall be provided the opportunity for a medical consultation
to assess the need for a medical examination. If the results of the consultation
indicate the need for a medical examination, one will be provided to the
employee. All medical consultations and examinations shall be performed
by the Centre College physician and shall be provided in a timely manner
at no cost to the employee. The CHO will provide the physician with the
identity of the chemical(s) involved in the exposure, exposure conditions,
signs and symptoms of the exposure, and the relevant MSDS.
The college physician will provide a written record of consultations
and/or examinations that will not reveal findings unrelated to the exposure
but will include any recommendation for further medical follow-up, results
of examinations and tests if administered, medical conditions of the employee
which would put his or her at increased risk as a result of the exposure,
and a written statement that the employee has been fully informed of the
results of the consultation/examination. The CHO shall maintain copies
of relevant records. Employees will be provided a copy of the record if
USE OF RESPIRATORS
Whenever exposure limits cannot be controlled below the TLV or PEL values
of part V above by the use of fume hoods, one must use a respirator in
accordance with the relevant standards. A possible example of such a situation
might arise for a worker taking inventory for an extended period in a chemical
store room. In such cases, Centre will provide the necessary respirator
located in both the Young Hall and Olin Hall Stockrooms. Respirator training
information is provided through its Department of Public Safety. See Appendix
G for necessary information.
DISPOSAL OF USED CHEMICALS
This section of Centre College's chemical hygiene plan constitutes the
College's disposal plan. The purpose of this plan is to minimize the harm
to people, other organisms, and the environment from chemicals used at
Centre College. This plan considers how used chemicals are to be collected,
stored, and disposed of.
Centre College is considered a limited quantity generator because it
generates less than 100kg of used chemicals per month. We have applied
to the Kentucky Department of Environmental Protection and have been assigned
the limited quantity generation number of KYD-985-082-726.
The first priority of the disposal program is to reduce the amounts,
number of types, and the degree of hazard associated with our used chemicals.
Employees should strive to reduce the number of different chemicals, and
the scale of and hazard associated with their use. Avoid using hazardous
chemicals if practical. Purchase chemicals only in the amounts needed in
the near future, and consider methods of recovery and recycling of used
Certain chemicals are suitable for drain disposal into the Danville
sanitary sewer system. These chemicals are only those reasonably soluble
in water. These materials must be flushed with a large (at least 100 times
by volume) excess of water. A partial list of these chemicals is included
in Appendix F.
Used chemicals which are not drain disposable and are no longer necessary
are to be classified, segregated and placed into appropriate used-chemical
containers for each of the following categories:
If there is uncertainty about classification, see the CHO. Care should
be taken not to mix incompatible used chemicals.
Water immiscible solvents(e.g., diethyl and petroleum ether, mineral spirits,
turpentine, gasoline, toluene, xylenes, benzene, ketones, etc.)
Particularly hazardous chemicals (e.g., known or suspect carcinogens, mutagens,
or teratogens, toxic inorganics like As, Cd, Ag, Cr, Se, Pb, Ba, etc.)
Other chemicals (e.g., water or air reactive materials, peroxides, azides
and other explosives, non-toxic inorganics).
Note that elemental mercury is to be recycled. A storage container for
used mercury is located in the chemical storeroom of Olin Hall, as is an
apparatus for capturing spilled mercury.
It is anticipated that used chemicals in categories A and C will be
stored in appropriate multiple-gallon containers as a mixture. Materials
in categories B and D will often be stored in smaller, appropriately labeled
closed glass containers. The label should identify the material and give
a date and the name of the person adding the material to the storage site.
The label should also identify any reactive, corrosive, toxic and/or biological
Once each week used chemicals shall be taken from their temporary storage
area (e.g.,laboratory generation site) to a central storage area such as
the solvent storage room in Young Hall basement. Each involved faculty
member or employee supervisor has the responsibility to ensure that this
process is accomplished.
Central storage will continue until the end of May, at which time a
licensed hauler will remove Centre's accumulated used chemicals and transport
them to sites for either recycling, incineration, or landfill disposal.
It is the responsibility of the Director of Public Safety to schedule and
otherwise interface with the hauler, and to ensure that centrally stored
unwanted Chemicals are removed from campus each May.
Everyone should understand that improper disposal of used chemicals
by pouring them down the drain, adding them to mixed garbage, or evaporating
them, perhaps in a hood, is unacceptable.
It is the responsibility of the CHO to maintain the following records.
The records involving air-flow rates, spills, accidents, and medical consultations
or examinations will be maintained for at least 30 years.
Material safety data sheets.
Chemical inventory including at least the quantity, hazard information
and storage location.
Safety inspections of Young and Olin Halls, print, etching and painting
studios, RAC shop and physical plant location where hazardous chemicals
Laboratory ventilation and fume hood airflow rates and monitoring and corrective
Chemical hygiene training records.
Accident/incident reports. See Appendix H.
Medical consultation/examination records.
UPDATING/MODIFICATION OF CHP
It is the responsibility of the CHO annually to evaluate Centre's CHP and
to initiate changes where necessary to comply with regulations of external
agencies or to improve safety and/or employee protection.