CIEC cheat sheet

The consultant's role is to characterize conditions, interpret data against recognized standards, and communicate findings; the consultant does not act as the remediator on the same project.

A written scope of work should define the question being answered, the sampling locations, the analytical methods, and the decision criteria before fieldwork begins.

Conflict of interest arises when compensation is tied to remediation findings; disclose any financial relationship with contractors or laboratories.

Findings should distinguish observed conditions, measured data, and professional interpretation, and each conclusion should trace back to a documented basis.

Client confidentiality governs report distribution; third-party release requires written client authorization unless legally compelled.

Standard report elements: site description, methodology, results, limitations, conclusions, and recommendations with references to applicable guidance.

Consultants should maintain chain-of-custody documentation and retain project records per contractual and legal retention requirements.

When data are insufficient to conclude, state the limitation and propose additional investigation rather than extrapolating beyond the data.

A phased approach moves from occupant interviews and walkthrough to targeted sampling only when the hypothesis requires measurement.

Carbon dioxide above roughly 1,000 ppm suggests inadequate ventilation relative to occupancy and is used as a ventilation indicator, not a pollutant limit.

ASHRAE 62.1 ventilation rates are expressed per person and per unit floor area; outdoor air intake should be verified against design occupancy.

Temperature and relative humidity should be logged over time; sustained indoor RH above about 60% supports moisture and biological growth concerns.

Building pressure relationships (stack effect, HVAC balance) drive pollutant transport; measure pressure differentials when cross-contamination is suspected.

Occupant symptom logs with timing and location help distinguish building-related from unrelated causes; symptom patterns alone do not establish causation.

Sampling strategy should include a complaint area, a comparison area, and an outdoor baseline where relevant to interpret indoor concentrations.

Real-time instruments (PID, CO, CO2, particle counters) screen for sources; confirmatory laboratory methods are used for quantification and identification.

Water moves by bulk flow, capillary action, vapor diffusion, and air transport; air transport typically moves far more moisture than diffusion through assemblies.

The dew point is the temperature at which air reaches saturation; surfaces below the dew point support condensation.

Relative humidity is temperature dependent; warming air lowers RH without removing water vapor, so RH alone can mask moisture loading.

Vapor retarders belong on the warm side of the assembly in cold climates; placement on the wrong side traps moisture.

Drying potential depends on the assembly's ability to dry in at least one direction; a wall with retarders on both faces is a double vapor barrier.

Moisture content of wood measured with a pin meter should be interpreted against species and temperature corrections; readings above roughly 20% support decay risk.

Wetting sources include roof and plumbing leaks, groundwater, condensation, and construction moisture; identify the source before designing drying.

Psychrometrics: specific humidity and dew point are absolute measures of water vapor; RH and temperature together describe the same state.

Asbestos: suspect materials are presumed to contain asbestos until sampled and analyzed by PLM (bulk) or PCM/TEM (air); do not disturb presumed material before characterization.

Lead: paint chip analysis by flame atomic absorption or ICP; dust wipe clearance criteria come from EPA/HUD guidance and vary by surface type.

Mold: air sampling (spore trap, culture) and surface sampling (tape, swab) answer different questions; spore traps give genus-level counts, not viability.

Radon: short-term charcoal canisters run 2-7 days; long-term alpha track detectors run 90+ days; test in the lowest livable level with closed-house conditions.

VOCs: summa canisters or sorbent tubes with TO-15/TO-17 analysis; PID readings screen but do not speciate.

Formaldehyde: active sorbent sampling with DNPH cartridges analyzed by HPLC; passive badges are used for longer averaging periods.

Air sampling results must be paired with outdoor or comparison-area data to interpret indoor sources versus background.

Sample numbering, location, media, flow rate, duration, and calibration records are required for defensible results.

Containment design specifies critical barriers, negative pressure (commonly -5 Pa or greater relative to occupied space) with HEPA-filtered exhaust, and daily verification.

Remediation design should state the removal/cleaning standard, the project boundaries, and the clearance criteria before work begins.

HEPA filtration (99.97% at 0.3 micron) is the basis for air scrubbing and exhaust unit selection; unit capacity must match containment volume and air changes.

Removal methods should minimize aerosolization: wet methods, bagging debris in the work area, and HEPA vacuuming of surfaces.

Design should address HVAC isolation, return-air protection, and post-remediation cleaning of the air handling system when it is in the work area.

Worker protection and containment requirements are set by regulation (e.g., OSHA, EPA, state rules) and by project-specific risk, not by the consultant's preference.

Design documents should include a sequence of work, responsibilities, and hold points where the consultant verifies conditions before the next phase.

Clearance criteria must be defined in advance and matched to the analytical method used for verification.

Oversight includes verifying containment integrity, worker practices, waste handling, and documentation against the design and applicable regulations.

Visual inspection precedes clearance sampling; visible dust or debris must be corrected before sampling is meaningful.

Clearance air sampling should follow the specified method, location, and volume; aggressive or settled-dust methods are used where the standard requires them.

A passing clearance requires all defined criteria to be met; a single failing location fails the clearance until re-cleaning and re-sampling occur.

Post-remediation verification (PRV) is performed by a party independent of the remediation contractor.

Documentation should include daily logs, photographs, chain-of-custody, laboratory reports, and a final report with clearance conclusions.

Waste must be characterized and disposed of per applicable rules; manifests and disposal records are part of the project file.

Clearance is project-specific and time-limited; conditions can change after re-occupancy, so re-evaluation may be warranted.

Practice within competence; when a project requires expertise you lack, disclose the limitation and engage a qualified professional.

Written agreements should define scope, deliverables, limitations, fees, and the basis for conclusions to avoid misunderstandings.

Objectivity requires reporting results that contradict the client's preferred outcome; withholding adverse findings is a breach of professional duty.

Recognized references include ASHRAE standards, EPA guidance, OSHA regulations, and ASTM methods; cite the edition and method used.

Confidentiality and data integrity: do not alter, selectively omit, or misrepresent sampling data or laboratory results.

Disclose conflicts of interest, including referral relationships and compensation arrangements, in writing.

Records should be retained and reproducible so another qualified professional could review the basis for the conclusions.

Continuing education and awareness of updated standards and regulations are part of maintaining competence.