Air Sampling
Personal and representative sampling are two distinct approaches to monitoring exposure and assessing potential risks at hazardous waste sites.
Personal Sampling
Personal sampling refers to the collection of samples directly from the breathing zone of an individual working at the hazardous waste site. This type of sampling is used to measure the exposure of a specific worker to airborne contaminants, such as dust, vapors, or gases.
Personal sampling helps in evaluating the effectiveness of personal protective equipment (PPE) and determining if the worker's exposure exceeds regulatory limits or guidelines. This method often involves the use of portable sampling devices, such as air pumps and filters, which are worn by the worker throughout their work shift.
Representative Sampling
Representative sampling, also known as area or environmental sampling, focuses on collecting samples from various locations throughout the hazardous waste site to assess the overall contamination levels and potential risks associated with the site.
Representative Sampling
This type of sampling is not specific to any individual worker but aims to provide a general understanding of the contaminant levels in different areas of the site.
Representative sampling helps in identifying hotspots, monitoring site conditions, and informing decisions related to site remediation, work practices, and overall risk management.
Various sampling techniques, including passive air samplers, soil and groundwater sampling, and surface wipe tests, can be employed for representative sampling.
The employer should document the employees and chemicals chosen for monitoring. Sampling should be based on the criteria obtained through initial monitoring of high-risk employees.
Knowledge Check Choose the best answer for the question.
4-4. What are the two basic sampling methods for monitoring airborne contaminants?
You forgot to answer the question!