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2.4.8.3 Post Exposure
CH2M HILL will provide exposed employees with a confidential medical examination. This
examination includes the following procedures:
• Documenting the exposure;
• Testing the exposed employee's and the source individual's blood (with consent);
• Administering post-exposure prophylaxis;
• Evaluating any reported illness.
If the exposed employee consents to blood collection but does not give consent for testing,
the sample will be preserved for 90 days. The employee can give consent any time during
the 90 days.
If the source individual does not consent to testing, CH2M HILL will establish that consent
cannot be obtained. If consent to collect the blood is obtained but consent to test is not, the
blood sample will be preserved for 90 days. If within 90 days the source individual agrees to
testing, the blood will be tested. Results of the source individual's testing are made available
to the exposed employee's physician.
Within 15 days of the completed examination, CH2M HILL will verify that the employee
has been informed of the results.
2.4.9 Untreated Wastewater and Wastewater Treatment Plants
(Reference CH2M HILL SOPs HSE&Q-202, Bloodborne Pathogens, HSE&Q 113, Medical Monitoring)
Domestic sewage is the used water from a home or community and includes toilet, bath, laundry,
and kitchen-sink waste. Sewage from the community may include industrial waste, groundwater,
and surface water. Normal sewage from a private sewage disposal system is normally 99.8 percent
water and 0.2 percent total mineral and organic solids. Large numbers of disease-producing
organisms that can cause diarrhea, bacillary dysentery, infectious hepatitis, and salmonella may be
found in excreta. Personnel shall avoid contact to exposed portions of the body and use good
personal hygiene practices.
As a prophylactic protection, all employees with the potential for exposure to untreated
wastewater will have, at a minimum, hepatitis A, hepatitis B series (can be in progress) and
current tetanus vaccinations. If an employee is given the opportunity to be vaccinated and desires
to decline the vaccination, the Vaccination Declination Form must be signed by the employee and
maintained in the employee file.
When working in wastewater treatment plants, employees should exercise the following
precautions:
• Do not eat or drink in plant areas;
• Minimize contact with surfaces;
• Don’t touch eyes, ears, nose and mouth;
• Wash hands immediately upon leaving the site or going into office areas. Ensure that adequate
washing facilities are available for employees. For situations where hand washing facilities are
not readily available, antibacterial hand gels can be used to prevent the spread of germs;
• If touching contaminated surfaces is unavoidable, wear surgical-type nitrile gloves. Carefully
remove gloves by rolling them inside out, and wash hands immediately;
• Avoid shaking hands with other employees, and maintain a distance of approximately 3 feet
during conversations to avoid spread of colds, flu and other contagious diseases;
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