Safety, Regulations, and Administrative Duties
Core concepts
Safety first: know confined space entry (permit, atmospheric testing, attendant, rescue plan), trenching and excavation hazards, hazard communication (HazCom/SDS), lockout/tagout, personal protective equipment, and chlorine handling (respirators, leak response). Understand electrical safety and traffic control during field work. Recognize bloodborne pathogens and heat stress risks.
Regulations and administration
Know the framework: the Safe Drinking Water Act (SDWA) and its amendments, National Primary Drinking Water Regulations (NPDWR), maximum contaminant levels (MCLs), treatment technique (TT) rules, monitoring and reporting, and public notification for violations. Understand the Consumer Confidence Report (CCR) requirement and operator certification rules. Learn recordkeeping, chain of custody, and emergency response planning.
Traps to watch
- Treating a treatment technique as an MCL (or vice versa).
- Forgetting public notification timelines for violations.
- Entering a confined space without a permit or attendant.
- Mixing incompatible chemicals (e.g., chlorine and ammonia) carelessly.
Rule of thumb / worked example
No confined-space entry without: a permit, atmospheric testing (oxygen, flammable gas, toxic gas), an attendant outside, and a rescue plan. For regulatory questions, identify whether the limit is an MCL (concentration) or a treatment technique (required process) before answering.