HAZWOPER Site Survey
The purpose of an onsite survey is to verify and supplement information from the offsite characterization. Prior to going on site, the offsite characterization should be used to develop a Site Safety Plan for site entry that addresses the work to be accomplished and prescribes the procedures to protect the health and safety of the entry team. Priorities should be established for hazard assessment and site activities after careful evaluation of probable conditions. Because team members may be entering a largely unknown environment, caution and conservative actions are appropriate.
The composition of the entry team depends on the site characteristics but should always consist of at least four persons: two workers who will enter the site and two outside support persons, suited in personal protective equipment and prepared to enter the site in cage of emergency.
Upon entering the site, entry personnel should:
• Monitor the air for IDLH and other conditions that may cause death or serious harm (combustible or explosive atmospheres, oxygen deficiency, toxic substances).
• Monitor for ionizing radiation. Survey for gamma and beta radiation with a Geiger-Mueller detection tube or a gamma scintillation tube; if alpha radiation is expected, use a proportional counter.
• Visually observe for signs of actual or potential IDLH or other dangerous conditions. Any indication of IDLH hazards or other dangerous conditions should be regarded as a sign to proceed with care and deliberation. Extreme caution should be exercised in continuing the site survey when such hazards are indicated.These documents should be controlled to ensure that they are all accounted for when the project is completed.
The task of document control should be assigned to one individual on the project team and should include the following responsibilities:
• Numbering each document (including sample labels) with a unique number.
• Listing each document in a document inventory.
• Recording the whereabouts of each document in a separate document register so that any document can be readily located. In particular, the name and location of site personnel that have documents in their possession should be recorded.
• Collecting all documents at the end of each work period.
• Making sure that all document entries are made in waterproof ink.
• Filing all documents in a central file at the completion of the site response. Field personnel should record all onsite activities and observations in a field logbook-a bound book with consecutively numbered pages. Entries should be made during or just after completing a task to ensure thoroughness and accuracy. Photographs can be an accurate, objective addition to a field worker's written observations.
For each photograph taken, the following information should be recorded in the field logbook:
• Date, time, and name of site.
• Name of the photographer.
• Location of the subject within the site.
• General compass direction of the orientation of the photograph.
• General description of the subject.
• Sequential number of the photograph and the film roll number.
• Camera, lens, and film type used for photography.