Industrial Hygiene Services Commitment to our Clients

ALJEN Consulting LLC will provide it’s most experienced, knowledgeable and result oriented individuals to manage and perform Industrial Hygiene Services for our valued clients.


The focus of our staff’s efforts will be to ensure that we meet or exceed your expectations for:

  • Establishing a understandable line of communication with our clients
  • Technical competence and budgetary constraints
  • Meeting Project schedules and providing quality deliverables

Environmental and Industrial Hygiene Project Manager


Members of our Environmental and Industrial Hygiene staff are qualified to completely assess worker protection needs and perform detailed analyses. Hazard assessments include recognition of hazards, identification and quantification of specific exposures, development of control measures to reduce or eliminate potentially hazardous exposures, and verbal and written communication of the survey results. As a part of the industrial hygiene exposure assessment, we compare health hazard assessment data with our clients' occupational health programs to determine that the scope, content, training, and documentation for these programs are consistent with recognized industry practices and government regulations .Based on the result of the assessment, we will develop programs that will meet OSHA and other requirements.


Overview of Industrial Hygiene Capabilities


  • Development of exposure and risk assessment strategies: process and work activity evaluations, product toxicity characterization, investigation into frequency and duration of exposures, work schedules, and general and local exhaust ventilation dynamics
  • Development and oversight of corporate environmental health and safety programs including confined space entry, respiratory protection, and hazard communication.
  • Industrial hygiene and safety audits to evaluate worksite health and safety practices including evaluation and recommendation of workplace controls
  • Regulatory compliance monitoring and exposure assessments for chemical, physical, and biological hazards
  • Health and safety plan (HASP) development and site monitoring for the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and Resource Conservation and Recovery Act (RCRA)
  • OSHA, private-party, and litigant dispute resolution for industrial, public, and institutional settings for chemical and microbiological exposures

Indoor Air Quality Services

The indoor environment in any building is a result of interaction between the site, climate, building system, construction techniques, contaminant sources and building occupants. Each of these components is directly affected by the other and when one adversely affects the other, the indoor air quality could be altered negatively.


ALJEN Consulting, LLC has personnel specially trained to investigate potential indoor air quality problems. Our indoor air quality team uses a systematic problem-solving approach employing state-of-the-art equipment to locate and assess potential sources of indoor air quality problems and/or complaints.


ALJEN Consulting, LLC specialists will study each of four factors (HVAC system, potential sources, pathways and occupants) affecting indoor air quality. Occupant activity, temperature and relative humidity are sampled/analyzed while specific contaminant sampling may also need to be conducted (i.e. insecticides, volatile organic compounds or bioaerosols). Finally, ALJEN Consulting, LLC Indoor Air Quality Specialists will provide a thorough report identifying all sampling and analytical results, including a determination of probable air quality problems and remediation recommendations.


It is ALJEN Consulting, LLC goal to determine and identify potential indoor air problems, advise resolutions and provide preventive measures to alleviate future concerns. In addition to providing consultation services on potential IAQ problems, ALJEN Consulting, LLC can provide standard operating procedures and policies for identifying, responding and resolution techniques to facilities. This IAQ Management Plan incorporates the site specific adaptation for the best allocation of resources for an individual entity.


ALJEN Consulting, LLC Indoor Air Quality Staff received specialized training through a American Industrial Hygiene Association' course sponsored by the National Institute for Occupational Safety and Health (NIOSH). ALJEN Consulting, LLC follows "Building Air Quality" guidelines as provided by the Environmental Protection Agency (EPA) and NIOSH.

Representative Indoor Air Quality Projects

Confidential-National Call Center

During the two heating seasons ALJEN Consulting, LLC was retained to perform IAQ tests was to assess general ventilation and comfort parameters inside the subject building’s. The test data is compared to the ASHRAE Standard for, “Ventilation for Acceptable Indoor Air Quality”.  Carbon dioxide (CO2), carbon monoxide (CO), temperature, and relative humidity (RH) are measured in with a calibrated TSI Q-Trak monitor. A calibrated instrument records data at 60-second intervals for eight hours at selected locations and the test data is compared to the ASHRAE Standard for, “Ventilation for Acceptable Indoor Air Quality”.


We reviewed the four factors (HVAC system, potential sources, pathways and occupants) affecting indoor air quality. Occupant activity, temperature and relative humidity were sampled/analyzed while specific contaminant sampling was also (i.e. volatile organic compounds or bioaerosols). We provided the client a comprehensive report identifying all sampling and analytical results, including a determination of probable air quality problems and remediation recommendations. It is always our goal to determine and identify potential indoor air problems, advise resolutions and provide preventive measures to alleviate future concerns.


Large Office Building in a suburban setting

We investigated an office area where workers were complaining of allergic symptoms related to a strange odor. The investigation included a thorough inspection of the office suite, heating/AC systems, sampling for carbon dioxide, humidity, temperature, volatile organic compounds, and dust. The office area was below grade. Recent landscaping disrupted the positive drainage away from the building compounded by renovations and installation of new carpeting that had some water damage. The landlord correct the deficiencies that were described in the recommendation made in our report.


Confidential Client


We investigated a recently constructed residential home approximately 3,500 sq ft for what we determined to be formaldehyde contamination from off-gassing associated with new building construction. A report was prepared detailing sampling procedures and sampling results. Wood cabinets were installed shortly after they were manufactured and not allowed to off gas. The female occupant was experiencing an allergic reaction while the male and children had no symptoms. Cabinets were returned to vendor based on our report and stainless steel cabinets were installed.

HUD and Rural Opportunities Rehab Projects

Typically homes that are designated to be rehabilitated or demolished have attic areas that have openings for birds to enter the structure. We have conducted investigated in attic areas where numerous pigeons were nesting. The investigation included collecting air samples and swab samples for Cryptococcus neoformans. The results of the sampling assisted the client in making informed decisions related to worker health during the rehabilitation of the buildings.

Personal Breathing Zone Sampling

The type of sampling required by OSHA's substance-specific standards is called personal breathing zone sampling. Because the samples are collected at the employee's nose and mouth, they are called "breathing zone" samples. The breathing zone can be visualized as a hemisphere about 6 to 9 inches around the employee's face. Breathing zone samples provide the best indication of the concentration of contaminants in the air the employee is actually breathing.​


The sampling is "personal" because it evaluates an individual employee's exposure to a chemical as opposed to area sampling that measures the concentration of a substance in a given area (e.g., the amount of carbon monoxide in a warehouse where gasoline-powered forklifts are being used). Although certain inferences can be made about exposure by considering the length of time an employee is in the area, the best indicator of a person's actual exposure comes from personal sampling since the sample is collected by equipment that is actually worn by the employee during the work day.