LEAD AND COPPER IN WATER TESTING - GSA Holifield Air Sampling Report... · LEAD AND COPPER IN WATER TESTING ... The following supporting documents are attached ... {7 7{7 TT TT TT

LEAD AND COPPER IN WATER TESTING

ASBESTOS AIR SAMPLING

COMPLETED FOR THE GENERAL SERVICES ADMINISTRATION

Survey Location:

Chet Holifield Federal Building General Services Administration 24000 Avila Road Laguna Niguel, California 92677

Survey Dates: November 15, 2017 & November 16, 2017

Report Date: December 22, 2017

Prepared By:

United States Public Health Service Federal Occupational Health

A. EXECUTIVE SUMMARY

On November 15, 2017 and November 16, 2017, the Federal Occupational Health (FOH) inspection team conducted asbestos air sampling throughout the Chet Holifield Federal Building. Air sampling was conducted to verify that airborne asbestos levels were at appropriate levels. Air samples were collected in common areas, mechanical air handler rooms, storage rooms, file rooms and in occupied office spaces throughout the building. A total of sixty-eight (68) air samples, four lab blanks and four field blanks were collected by Federal Occupational Health and submitted to AMA Analytical Services, Inc. (AMA) for asbestos fibers concentration analysis using Transmission Electron Microscopy (TEM). Samples were analyzed following the AHERA (40 CFR Part 763 Appendix A Subpart E) protocol.

There are no current EPA regulations for general area air sampling and no regulatory action levels for direct comparison of airborne asbestos levels; however, the US Environmental Protection Agency (EPA) has regulations for area air sampling within containment after an asbestos abatement has been completed. When performing general area asbestos air sampling, FOH compares results to the EPA regulations.

Laboratory analysis indicated fiber levels for all samples to be less than 15 structures per millimeter squared (< 15 s/mm2) except for one sample that had a level of 15 s/mm2. In structures per cubic centimeter (s/cc) the results ranged from <0.004 to 0.0048 s/cc of air.

For TEM AHERA samples, EPA uses the clearance level of 70 s/mm2 after an asbestos removal has been completed. This is the level at which EPA considers the space appropriate to return to general occupancy. Analytical results of all air samples indicate that asbestos concentrations were below the EPA clearance level of 70 s/mm2. The Memorandum of Agreement (MOA) between the General Services Administration (GSA) and the US Citizenship and Immigration Services (USCIS) dated February 15, 2017 states that results less than 0.005 s/cc are acceptable. All results from the sampling were less than 0.005 s/cc of air.

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B. INTRODUCTION

On November 15, 2017 and November 16, 2017, U.S. Public Health Service, Federal Occupational Health, inspection team members, Michael Pinkerton, Jaqueline Jones and Matthew Rodriguez conducted asbestos air sampling at the Chet Holifield Federal Building located at 24000 Avila Road, in Laguna Niguel, California, 92677. Air samples were collected in common areas, mechanical air handler rooms, storage rooms, file rooms and office spaces occupied by government agencies throughout the building within the above referenced structure. A total of sixty-eight (68) air samples, with four lab blanks and four field blanks were collected and analyzed for asbestos fibers using transmission electron microscopy (TEM) by AMA Analytical Laboratory in Lanham, Maryland.

The Chet Holifield Federal Building is a United States Government Building managed by the General Service Administration and is occupied by government agencies. The 7-story pyramidal form building was constructed between 1967 and 1971 and is approximately 1,000,000 square foot in size. It is constructed of angled, painted, pre-cast concrete panels with reticulation, a textured finish that displays curvilinear forms and recessed anodized aluminum windows. The building has a concrete frame and the lateral force-resisting system consists of concrete shear walls and single-level concrete moment frames. This office space has carpeted and tiled floors, painted-sheetrock walls, drop ceilings, and the supply air is ducted while the return air is transported via the plenum area above the ceiling.

Before the survey, an opening conference was held with GSA Senior Property Manager Sherry Hutchinson and Acting Building Manager Jennifer Kim, to discuss the procedures and the locations of the air sampling.

C. METHODS

Air sampling was conducted by drawing a known volume of air through a filter using flow-controlled pumps that were each pre and post calibrated. Calibration was made by using a Bios Defender 520 Primary Flow Calibrator, with a representative sampler in line. The filter media used was 0.45-micron pore-size mixed cellulose ester filter with backup pad. Each sample was collected open-faced in a 25-millimeter non-conducting cassette. Each sample was collected at breathing zone height. The samples were collected for approximately 2 hours and a sufficient volume of air was collected to meet the required limit of quantification for TEM analysis as well as meet the optimum fiber loading on the filter. FOH collected the samples for approximately 2 hours. Air samples were collected from common areas, mechanical air handle rooms, storages, file rooms and in occupied office spaces. A total of sixty-eight (68) air samples, four lab blanks and four field blanks were collected and analyzed for asbestos fiber concentrations using AHERA TEM. All samples were analyzed by AMA Analytical Laboratory in Lanham, MD, an American Industrial Hygiene Association (AIHA) accredited laboratory.

D. RESULTS

Laboratory analysis indicated fiber levels for all samples to be less than (<) 15 s/mm2 except for one sample which had a level of 15s/mm2. In structures per cubic centimeter (s/cc) the results ranged from <0.004 to 0.0048 s/cc. Complete laboratory results can be found in Section F-Supporting Documents of this report.

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E. DISCUSSION AND RECOMMENDATIONS

There are currently no regulations for general area air sampling for asbestos and no regulatory action levels by which results may be directly compared. The US Occupational Safety and Health Administration (OSHA) has regulations for worker exposure which entails sample collection by placing the sampling device in the employee’s breathing zone. However, this was not the case and therefore FOH will not compare the area sampling results to the OSHA PEL of 0.10 fibers per cubic centimeter. The US EPA has regulations for area air sampling within containment after an asbestos abatement has been completed. When performing general area asbestos air sampling, FOH compares results to the EPA regulations. There are some differences in the method of collection since FOH did not collect the samples in containment but the clearance level is the same.

For TEM samples, EPA uses the clearance level of 70 s/mm2 after an asbestos removal has been completed. This is the level at which EPA considers the space appropriate to return to general occupancy. All of the samples collected by FOH have levels less than 70 s/mm2.

The MOA between GSA and USCIS states that results less than 0.005 s/cc are considered acceptable. All samples results from this sampling were less than 0.005 s/cc of air.

FOH recommends that any work that is done above the ceiling, in the plenum area, is completed after hours while utilizing a negative pressure mini-containment. This will limit the disturbance of the dust on the top of the ceiling tiles.

F. SUPPORTING DOCUMENTS

The following supporting documents are attached to the report:

Laboratory Report/Chain of Custody for initial sampling (17 pages)

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