Veteran Owned Small Business
Trial Preparation and Expert Testimony

HAZCLEAN has developed a specialized program to assist attorneys in litigation. HAZCLEAN develops the appropriate expert information as it relates to each case and works with the attorney in a clear, concise manner. The selected expert at HAZCLEAN prepares in accordance with standards of engineering practice, engineering conduct and the engineering code of ethics. Investigations, studies and engineering modeling are part of the trial preparation procedure. Field sampling and analyses as well as on-site monitoring can play an important role in trial preparation. HAZCLEAN has over twenty (20) years experience in conducting investigations, on-site monitoring and report preparation as it relates to trial preparation.


HAZCLEAN supports all litigation activities and generally proceeds as an engineering firm for the defense. Occasionally, HAZCLEAN will support the plaintiff in selected litigation.

Phase I, II, III Site Investigations for Acquisition of Property

HAZCLEAN conducts an extended version of the ASTM Standard Environmental Assessment (ASTM Standard E 1527-13) for property acquisition. The site investigation for acquisition of property involves a detailed intrusive review of the property that includes a surface/subsurface review for raw land and an interior investigation for facilities or buildings. This program offered by HAZCLEAN is tailored especially for a business transaction considering acquisition of potentially contaminated property.

Indoor Air Quality (IAQ) Program for Commercial, Industrial and Residential Properties

HAZCLEAN ENVIRONMENTAL CONSULTANTS, INC. (HAZCLEAN) has developed an indoor air quality investigation program with specific emphasis on diagnosis of the indoor air quality problem.

The goal of the diagnostic approach to the building investigation is to identify and solve the indoor air quality complaint, to prevent it from recurring, and to eliminate other problems.

The HAZCLEAN diagnostic building investigation program objective is identifying indoor air quality problems and solving these problems through a specific engineering control strategy. This IAQ diagnostic investigation involves a five (5) phased approach which is presented in a schematic fashion in Figure 1 and itemized in a phased approach as follows:

  • Phase I: Conduct an initial building walk-through and develop an indoor air quality profile
  • Phase II: Develop a comprehensive building-wide data collection program
  • Phase III: Develop a problem-specific air quality monitoring program
  • Phase IV: Develop a problem-specific corrective action program
  • Phase V: Prepare a final engineering and industrial hygiene air quality report

Phase I: Conduct an Initial Building Walk-Through and Develop an Indoor Air Quality Profile

The initial IAQ investigation begins with one or more reasons for concern involving occupant exposure. The diagnostic building investigation flow chart presented in Figure 1 indicates that the IAQ investigation is a cycle of information-collecting, hypothesis formation and hypothesis testing. The goal of the investigation is to understand the IAQ problem well enough to solve it. Notably, many IAQ problems have more than one (1) cause and may respond to or require several engineering corrective action designs.

HAZCLEAN will conduct an initial walk-through of the problem area to collect information about all four (4) of the basic factors that influence indoor air quality such as occupants, HVAC system, contaminant/pollutant pathways, and contaminant/ pollutant sources. The objective of the initial walk-through is to collect fundamental information about the facility to develop a building or facility profile. If the initial walk-through does not provide enough information to resolve the problem then HAZCLEAN will proceed to Phase II which will develop a comprehensive database to form an IAQ hypothesis.

Phase II: Develop a Comprehensive Building-Wide Data Collection Program

HAZCLEAN will conduct a comprehensive data collection program in the second phase of the IAQ investigation which will involve specific data about the occupant complaints, the HVAC system, contaminant/pollutant pathways, and contaminant/ pollutant sources. The purpose of the comprehensive database development program is to establish one (1) or more hypothesis which could possibly explain the IAQ problem. HAZCLEAN will utilize a number of standard forms during the comprehensive portion of the investigation which are used to track the course of an investigation from receipt of the initial complaint until the present time. The comprehensive database development program consists of the following elements:

Collection of Occupant Information

  • Review existing records of complaints
  • Interview occupants
  • Develop occupant diary
  • Develop a log of activities and system operation

    HVAC System Information

    • Review existing documentation on HVAC design, installation, and operation
    • Interview maintenance/facilities staff
    • Inspect HVAC system layout, condition, and operation
    • Use HVAC/IAQ instrumentation for measurements
    • Compare the original design to the current HVAC system
    • Use HVAC data to evaluate mitigation measures
    • Compare the original uses of space to current uses
    • Consider the condition of the HVAC system

    Collection of Information About Contaminant/Pollutant Pathways and Driving Forces

    • Identify pollutant pathways
    • Observe direction of air movement and contaminant distribution
    • Confirm or revise boundaries of the IAQ complaint area
    • Collect information of contamination/pollutant sources
    • Utilize contaminant/pollutant source data to form hypothesis

    Phase III: Develop a Problem-Specific Air Quality Monitoring Program

    HAZCLEAN will advance to Phase III of the building diagnostic investigation if the problem has not been solved through Phases I and II. The Phase III program will test the hypothesis developed in Phase II through actual site specific IAQ monitoring. The Phase III IAQ site specific monitoring will be based on a sampling strategy which understands how the building operates, the nature of the complaints, and a plan for interpreting the results. The actual sampling plan will consist of biological aerosols, chemical contaminants, physical contaminants, and ventilation measurements. HAZCLEAN utilizes EPA, NIOSH, and ASTM references for specific sampling and analytical techniques. The following is a list of parameters utilized as part of the site specific monitoring program:

    • Ventilation: Temperature, Humidity, Air Flow, and Carbon Dioxide (CO2) Measurements
    • Chemical Parameters: Formaldehyde, Volatile Organic Compounds, Total Organic Carbon Compounds, Total Nuisance Dust, Metals and Inorganic Compounds
    • Biological Aerosols: Viable/Total Fungal Spores, Aspergillus, Penicillium and Stachybotrys

    Phase IV: Develop a Problem-Specific Corrective Action Program

    HAZCLEAN will review the hypothesis developed in Phases I, II and III and compare with confirming results. The actual corrective action design evaluated will be implemented through a detailed engineering design program. In those cases where simple modification of ventilation, flow rates, or distribution patterns can be accomplished, then no further design will be implemented. In those more complicated cases, HAZCLEAN will develop a design for corrective action. Additionally, HAZCLEAN will develop construction and bid documents for implementing the corrective action design. HAZCLEAN will assist the client with selection of a contractor and manage the project until substantial completion.

    Phase V: Prepare a Final Engineering and Industrial Hygiene Air Quality Report

    HAZCLEAN will prepare a final engineering report indicating the results of the investigation, the findings, all supporting documentation and data, and a statement of corrective action indicating the existing indoor air quality.

    HAZCLEAN is committed to identifying the source(s) of indoor air quality contamination and developing a program to remove the source(s) and restore the facility to a condition for re occupancy. A Monitoring and Analytical Program has been developed which allows for the identification of chemical and biological agents creating the indoor air quality contamination. The Cleanup and Restoration Program is conducted with plans and specifications developed by HAZCLEAN and monitored by HAZCLEAN. HAZCLEAN has pre qualified, selected contractors qualified to provide the cleanup and restoration services which allows HAZCLEAN to provide a Statement of Clean Closure.



©Hazclean Environmental Consultants of Mississippi, Inc.  All Rights Reserved, 2001 HAZCLEAN Environmental Consultants, Inc.