Environmental Incident Observation and Authority-Directed Sampling: From Safe Documentation to Qualified Results

1. 01

   Verify incident command or authority direction

   Confirm whether observation-only documentation is required or whether specific media, locations, depths, and analytes are authorized. Record the authorizing person, organization, case reference, and date.

2. 02

   Name the decision question

   State whether the sample supports notification follow-up, source screening, human-health evaluation, ecological injury documentation, cleanup planning, or another approved purpose. A sample cannot answer every question.

3. 03

   Stop if authorization is missing

   Without explicit direction, approved safety planning, and a receiving laboratory, preserve observations and notifications only. Do not collect 'just in case.'

Sources: [4], [7], [3]

• Stable location identifier, coordinates, jurisdiction, and access hazards
• Date, time, time zone, weather, wind, stage, and recent rainfall
• Visible release features, infrastructure context, and extent from a safe distance
• Notifications made, channels used, and case or reference numbers
• Exposure, illness, or wildlife concerns routed through health, veterinary, or wildlife procedures
• Photographs and sketches that do not require entering the release area
• Explicit statement that substance identity remains unknown unless authority-communicated

Sources: [1], [5], [12]

The authorized case defines the measurand, reporting basis, unit, matrix, fraction, method, detection needs, and quality controls. Oil, hazardous substances, pesticides, pathogens, nutrients, and oxygen demand may require different methods, containers, preservation, cooling, holding times, and laboratory certifications. No single analyte list, bottle type, preservative, or holding time applies to every incident.

Confirm receiving-laboratory capability, accreditation or approval where required, shipping constraints, turnaround, custody forms, and contingency if the release type changes. Resolve conflicts between plans before mobilization rather than improvising in the field.

Sources: [4], [14], [8]

Hazardous waste operations and emergency response require training, site control, medical surveillance, and work plans appropriate to the operation level assigned. This guide does not select respirators, chemical suits, decontamination methods, or entry zones.

Field crews follow the incident safety plan, job hazard analysis, air monitoring when required, buddy system, decontamination lines, and stop-work authority. If conditions exceed the authorized role, withdraw and escalate rather than extending scope.

Sources: [7], [8], [13]

• Use the approved sampler, depth, and location identified in the authorization
• Label each container before or immediately after collection with the controlled sample ID
• Record station, depth, time, matrix, fraction, method, and field QC relationships
• Segregate control samples, blanks, and duplicates exactly as the quality plan requires
• Document deviations, insufficient volume, broken seals, warming, or safety stops without erasing the event
• Never substitute a field meter reading for a laboratory measurand in the custody record

Sources: [4], [8]

The custody record should identify project or case, authorizing authority, station, depth, matrix, fraction, sample and container IDs, collection time and time zone, requested measurand and method, preservation or processing state, required temperature control, turnaround, and field QC links.

Document each relinquishment and receipt with person, organization, date, time, seal condition, cooler or shipment identity, temperature evidence where required, breakage or leakage, preservation exceptions, laboratory accession, and requested corrective action. Reconstructed custody must be labeled as such.

Sources: [1], [3]

Confirm the laboratory used the authorized method and preparation for the submitted matrix and fraction. Review blanks, controls, spikes, duplicates, dilutions, contamination, holding-time compliance, and method-required documentation. Apply the approved data-validation procedure and retain qualifiers, detection and reporting limits, and amendments.

A non-detect or low value is bounded by the stated limit; it is not proof of absence across the water body or event. A detect supports only the method-defined measurand for that sample, place, depth, and time.

Sources: [4], [14]

1. 01

   State what the result supports

   Identify sample, station, depth, time, measurand, method, unit, qualifier, and validation state. Separate laboratory identity conclusions from field observations.

2. 02

   State what remains unresolved

   One sample does not map the whole release, prove source, authorize cleanup, declare safety, or reopen access. List competing pathways and missing media or times.

3. 03

   Route parallel decisions correctly

   Exposure and medical evaluation, fisheries and wildlife response, wastewater repair, regulatory enforcement, cleanup implementation, recovery monitoring, and public communication remain with their responsible authorities.

Sources: [2], [15], [12]