How many clearance samples should be taken for mold remediation?

In a recent article written by Dr. Harriet Burge, in The Environmental Reporter for EMLAB P&K, she discussed this question and came up with an interesting answer. As we discuss in our mold remediation classes, clearance sampling is used to document that the mold contamination was successfully removed as part of a well designed written protocol (scope of work).

In preparing the scope of work for the project, the consultant should take pre-abatement air samples to have a picture of the air before the remediation. Air samples should be taken inside the area being remediated, outside the area being remediated, and outside the building. This sampling must be representative of the air in the areas sampled. Using these results and the data created, the consultant (writing the remediation protocols) can pre-determine the percentage change they want to see in the clearance samples and add that information to the protocols.

Based on Dr. Burge's article she suggests that the number of air samples should represent 5% of the air in the room or 2% of the air in the room if the air is thoroughly mixed. (when mixing air the method used should not send so much dust in the air that it will require you to sample for less than 10 minutes). Assuming a 10 minute air-o-cell sample represents slightly more than five (5) cubic feet of air, a 1000 cubic foot room would require four (4) samples to achieve 2% with proper mixing and ten (10) samples without mixing.

It is important to remember no single sample is representative of any environment (as discussed in Dr.Burge's article and supported by various publications by the American Conference of Governmental Industrial Hygienists (ACGIH), the American Industrial Hygiene Association (AIHA), and others). As consultants, we must ensure the remediations we recommend are complete and this can only be accomplished if the interpetations are supported by quality data that is representative of the environment we are sampling. Multiple samples are the only way to ensure the environment is accurately evaluated.

OSHA Violations Indicate Enforcement of Asbestos Standard

The Occupational Safety and Health Administration (OSHA) recently cited two hospital construction sites for violations related to the asbestos construction standard. The closest site in Rochester, New York involved Gordon-Smith Contracting that was cited for 3 alleged willful and 7 serious violations of the asbestos and respiratory standards and faces a total of $99,925 in proposed fines.

Gordon-Smith employees were required to remove ceiling tiles and other materials that were embedded in or adjacent to asbestos containing fireproofing without proper safeguards. The willful citations, accounting for $87,000, were for not using wet methods or wetting agents to control asbestos exposures, employees not supplied with approved respirators,and the workers had not been trained in asbestos removal. The seven serious citations were issued to Gordon-Smith for not ensuring each employee wore the appropriate respiratory, hand, and head protection; not immediately mending or replacing ripped or torn protective work suits; no written respirator program, and not informing employees of the results of asbestos monitoring.

The second hospital site was in Mescalero, New Mexico involving Maloy Construction, a general construction company, and Deerfield Corp., a plumbing and construction company. OSHA cited Maloy Construction with one alleged willful and 4 alleged serious violations totalling $75,600 in proposed fines. The willful violation was for failing to assure that Deerfield, the subcontractor, was in compliance with OSHA's asbestos standard. The serious violations include failing to inform other employees in the area of the asbestos work, assessing the exposure, and designating and containing the asbestos materials.

OSHA cited Deerfield with 3 alleged willful and nine alleged serious violations accounting for $81,900 in proposed fines. The willful violations were failing to regulate the asbestos area, assess the initial exposure, and provide protective equipment. The serious violations included failing to launder contaminated clothing, train employees on asbestos removal, label containers for waste, and provide a competent person to properly supervise the work area.

These citations show what OSHA focuses on when coming to an asbestos abatement project. Asbestos contractors and consultants should make sure they have a written respiratory protection program with an appropriately trained administrator; an initial exposure assessment; and a means for ensuring employees are informed of the asbestos monitoring results. While general contractors or construction managers must ensure that their subcontractors are in compliance with the OSHA asbestos standard.

Mayor Bloomberg Announces Changes To NYCDEP's Asbestos Enforcement

On July 16, 2008 Mayor Bloomberg announced changes that will impact how New York City Department of Environmental Potection (DEP), Department of Buildings (DOB), and Fire Department (FDNY) handle and coordinate construction, demolition, & abatement operations. Due to the death of two firefighters at the fire at 130 Liberty Street, New York City did a review of agency operations. That review resulted in a report called "Strengthening the Safety, Oversight, and Coordination of Construction, Demolition, and Abatement Operations." This report made 33 specific recommendations designed to strengthen each agencies' inspection practices, increase notifications and data sharing between agencies and improve the safety of abatement and demolition operations. Of the 33 recommendations, 4 addressed inspection processes, 12 adressed abatement operations, and 1 addressed demolition inspections at the DEP. The recommendations for the NYCDEP are:

Inspection Processes at DEP, DOB & FDNY:

• DOB, FDNY, and DEP should review their inspection criteria and make changes to ensure that, to the extent possible, inspections are prioritized on the basis of risk.
• DOB, FDNY, and DEP should create common safety protocols incorporating high-priority safety issues within the inspection capacity of all three agencies, and should cross-train inspectors to address these common safety issues.
• DOB, FDNY, and DEP should implement a system to share relevant results of inspections of buildings that meet agreed-upon criteria. As part of this effort, FDNY should develop a computer-based process to share inspection data internally and with DOB and DEP.
• DOB, FDNY, and DEP should review their inspection programs to ensure that they have sufficiently robust quality assurance controls in place.

Abatement Operations:

• DEP should regularly notify FDNY and DOB about large and/or complex abatement jobs that meet thresholds to be determined by DEP, FDNY, and DOB.
• DEP should establish a permit requirement for certain large and/or complex abatement jobs based on thresholds to be determined by DEP, DOB, and FDNY.
• DEP should require building owners and/or air monitors on abatement jobs to notify DEP when abatement work at a particular site is complete.
• DEP should promulgate clear guidance to contractors about how to maintain proper egress at abatement sites and enforce this requirement in the field.
• DEP should require that egress conditions be recorded daily in the abatement contractor's logbook and kept on site.
• DEP should require that all materials used in construction of temporary enclosures for abatement work be non-combustible or flame-resistant.
• DEP should require the installation of a central negative air "cut-off switch" or similar mechanism at abatement jobs that meet thresholds to be established by DEP, FDNY, DOB.
• DEP should develop written protocols, such as checklist or other guidance, to ensure that its inspections are comprehensive and consistent at all abatement jobs.
• DEP inspectors should be trained to inspect and address egress and other safety requirements at abatement sites.
• DEP should have the authority to enforce provisions of the Fire and Building Codes at abatement sites, including issuing Notices of Violation and other penalties.
• DOB should make permanent its capacity to have inspectors and other personnel respond to abatement sites-based on criteria to be established by DOB, DEP, and FDNY-to augment DEP and FDNY inspections at a particular site. DOB inspectors and other responders must have proper training and personal protective equipment to do this job.
• DEP should formally establish a policy that strictly limits simultaneous abatement and demolition work, and requires a variance-including review by DOB and FDNY-to undertake it.

Demolition Inspections:

• DOB, DEP, and FDNY should update their websites and publications to provide comprehensive and coordinated guidance about the construction, demolition and abatement processes, including how to file for and conduct these operations safely, and the regulatory schemes that are triggered by these operations.

OSHA Announces Proactive Measures to Reduce NYC Construction Fatalities

The Occupational Safety and Health Administration (OSHA) announced on June 23, 2008 proactive measures to combat the recent high fatality rate in New York City. OSHA is temporarily assigning a dozen additional compliance officers to conduct proactive inspections of high-rise construction sites, cranes, and other places where fatalities and serious accidents have been occurring. Ongoing inspections will also continue based on existing local emphasis programs or as a result of complaints, referrals or accidents.

Since May, 2008, OSHA has also been sending copies of violation citations issued to employers on city construction sites to the employer's insurance or worker's compensation carriers, and to construction project owners and developers in order to raise awareness of occupational hazards found on city jobsites. Citations involving training violations at union sites will be sent to the unions representing the workers and to their training funds.

FUTURE ENVIRONMENT DESIGNS SPONSORS SINGING IN THE SANCTUARY FOR THE THEODORE ROOSEVELT SANCTUARY & AUDUBON CENTER

Future Environment Designs announced today that they are a key sponsor of “Singing in the Sanctuary” being held Saturday, July 26, 2008 from 1:00 PM to 4:00 PM at the Theodore Roosevelt Sanctuary & Audubon Center at 134 Cove Road, Oyster Bay, New York.
“Singing in the Sanctuary” will connect people to nature through the songs and puppetry of locally-grown and internationally known singer/songwriter Janice Buckner. Ms. Buckner will perform from 2:00-3:00pm and will showcase kid-friendly environmentally themed songs and puppetry. Combining music and puppetry, Ms. Bruckner educates and entertains with children’s lyrics that carry a tune and environmental message. Throughout the day from 1:00-4:00pm, Sanctuary staff and volunteers will display live-animals where you can get up close and personal with some of the resident non-releasable wildlife. Sanctuary staff and volunteers will also have many crafts, displays, kid’s activities, raffles through the day.
Future Environment Designs, visit there website at www.futureenv.com, is a 20-year-old indoor air quality, industrial hygiene, and construction safety training and consulting firm based in Syosset, NY. Future Environment Designs works with clients to solve indoor air quality issues (mold, asbestos, lead, and heating, ventilation, and air conditioning problems) and train workers on construction safety issues (asbestos, lead, respiratory protection, OSHA 10 hour construction safety, etc.). Angelo Garcia, III Principal – Industrial Hygienist for Future Environment Designs, read his blog at http://futureenv.blogspot.com, says it is part of our mission to support events like “Singing in the Sanctuary” and organizations such as the Theodore Roosevelt Sanctuary & Audubon Center to help families become more familiar with the natural world around them.
The Sanctuary was established in 1923 in memory of the Conservation President, Theodore Roosevelt. Considered the oldest songbird sanctuary in the nation, the Sanctuary has 15-acres of upland forest and open meadow habitat maintained for songbird conservation and environmental education.
The goal of the Theodore Roosevelt Sanctuary & Audubon Center is to provide high-quality effective environmental education programs to all audiences. Using hands-on, experiential, and inquiry-based methods, program participants will develop a deeper understanding and consideration for our natural world, gain a sense of stewardship for their local environment, and become informed decision-makers for the future. Highly qualified educators conduct nature programs at the Sanctuary or at a site of your choice. The Sanctuary uses live non-releasable wildlife; natural areas, artifacts and an exciting assortment of activities to help people discover the natural world.