Asbestos Abatement >> Asbestos Abatement Supplies

Joint compound used on wallboard systems often contains asbestos added during the mixing process to improve the working texture of the material. The asbestos in the joint compound is typically much less than 5 percent by weight and the joint compound makes up a minor fraction of the material in the wallboard system. Where Asbestos Abatement Supplies work with the wallboard system does not involve sanding, grinding or abrading the wall surface, joint compound will generally remain intact on the surface of the wallboard. The presence of joint compound has not been found to represent a greater hazard of asbestos exposure than treating the wallboard system as a homogenous material. It is important to implement prompt clean-up procedures and avoid pulverizing debris generated during the work.

Because of the circumstances presented by the use of asbestos in such joint compounds, questions arise relating to the application of the requirements of the asbestos standards adopted by the Department of Labor and Industries (L&I) under the authority of the Washington Industrial Safety and Health Act (WISHA), RCW 49.17 and the Washington Asbestos Act, RCW 49.26. II. Scope and Application This WISHA Regional Directive (WRD) provides guidance to WISHA enforcement and consultation staff whenever they must address Asbestos Abatement Supplies issues concerning employee exposure to hazards involving asbestos-containing joint compound in wallboard systems.

This document does not address materials sprayed or applied with a trowel across the full surface of the wall (such surfacing materials are covered under the Class I work provisions of the asbestos standard, found in WAC 296-62-07712). This WRD supersedes all previous guidance on this subject, both formal and informal. Sampling for joint compound. Owners and employers can generally rely upon full-depth Asbestos Abatement Supplies samples of wallboard systems containing joint compound collected during building inspections. For general demolition and other work dealing with the wallboard system as a whole, building surveys using samples representing the full depth of wallboard material meet the good faith survey requirements.

Where sample results identify trace or less than one percent asbestos for the wallboard system, some basic requirements of the asbestos standard will apply but the work will not be considered an "asbestos abatement project" under the definitions of the standard. However, full-depth samples are not sufficient for wallboard systems where surfacing materials are present or where work will specifically disturb joint compound. Building inspectors must examine wall systems in sufficient detail to identify extensive patching or Asbestos Abatement Supplies application of surfacing layers on walls (as per the EPA AHERA inspection protocols for identification of surfacing materials in 40 CFR 763 Part E). These applications are considered to be "surfacing materials" under the standard, although similar plaster products may be used for joint compound.

Surfacing materials have been associated with extensive asbestos exposure and have more stringent handling requirements than most other materials (see the OSHA preamble to the 1994 rulemaking for additional discussion). Where work practices will selectively disturb joint compound, a full depth sample may not represent the Asbestos Abatement Supplies workplace hazard. For example, sanding or scraping a wall may specifically disturb the joint compound and create dust and debris composed primarily of joint compound. Building inspectors must assess the work to be conducted and sample the materials representative of the hazard presented by the work. This may be accomplished using individual samples of different layers or having layers within samples analyzed separately.

WISHA enforcement staff may elect to collect samples of dust or debris from the workplace or sample specific materials to make an assessment of the hazard represented by these materials. The specific work activity associated with the sample must be documented. A full-depth Asbestos Abatement Supplies sample result may substitute for layered results in situations where full-depth sampling is determined appropriate by an accredited building inspector. However, where sampling of joint compound has detected asbestos, the overall wallboard materials must not be reported as asbestos free. Previous sampling may have been conducted for significantly different projects and specifically focused on joint compound (for example, samples assessing a prior painting project where sanding of the wall surface was planned).

It is also common practice for laboratories to report layer by layer results for quality control reasons, whether or not this analysis is requested. In either case, it is improper to ignore the known presence of asbestos, but additional information may be collected and used to characterize the overall hazard due to asbestos in the current work. An accredited building inspector must conduct any reassessment of wallboard systems. The Asbestos Abatement Supplies reassessment must be conducted based on objective information collected during inspection of the wallboard system by an inspector or laboratory analysis of samples collected in accordance with EPA protocols. Pertinent objective information includes field documentation of the layers present in the samples and the relative quantities of materials represented by the samples.

The level of proof should be equivalent to that for rebuttal of PACM designation and EPA inspection and analysis protocols must be followed. If resampling is conducted with full depth analysis and no asbestos is detected, the wallboard system must still be reported as containing trace or less than one percent asbestos based on the initial sampling.

Environmental Effects Of Meth Labs

Meth Production MethodsThere are various methods for making meth in common practice in the U.S. today. Most Kentucky meth"cooks" use variations of the anhydrous ammonia method (also called the Birch Reduction method or"Nazi" method). Kentucky law Meth Lab Cleanup Environmental Effects Of Meth Labs enforcement have also reported discovery of  read more..

Crawlspace Water Damage

You may not be aware how critical it is to have your crawlspace dry and free of moisture. All kinds of health issues can arise from having a crawlspace with the potential of being wet and having the possibility of growing mold. Ear, nose and throat problems, lung infections, asthma and other   read more..

How To Care For Antique Paper

Prepare a work surface by covering a sheet of clean blotting paper with a sheet of nonwoven polyester such as Reemay or Hollytex to prevent the documents being repaired from sticking to the paper because of stray or Document restoration How To Care For Antique Paper extruded paste. 

Begin by mending th  read more..

Mold Remediation

The following are the minimum steps that shall be applied to all Document restoration Mold Remediation projects, and for smaller, minor restorations that could be in non-sensitive, unoccupied areas such as the flooded regions that have involved personal, single dwelling homes. This information will help you understand how a p  read more..

How To Safely Remove Asbestos

Evaluating the health effects of exposure to Libby asbestos requires both extensive knowledge of exposure pathways and access to toxicity data. But the toxicological information currently available is limited, so the exact level of health concern for different sizes and types of asbestos remain  read more..

Structural Drying Wet Carpet

To avoid wind and windborne debris damage to rooftop ductwork, it is recommended that ductwork not be installed on the roof (see Figure 5). If ductwork is installed on the roof, it is recommended that the gauge of the ducts and their attachment be sufficient to resist the design wind loads. Figure 5  read more..

Water Extraction

Cleaning up after a Sewage Cleanup Water Extraction overflow is a necessary job that everyone must engage in during attempts to restore our homes and businesses. Though the overflow might have ended, water restoration workers might continue to face a number of dangers during the sewage cleanup procedure. As a consequen  read more..

Types Of Security For Fenced Yards

Storm surge levels on Galveston Island and on the west side of Galveston Bay are estimated to be between 10 and 15 ft. Here, too, several NOS tide gauges failed, although the gauge at Eagle Point on the west side of Galveston Bay recorded a maximum surge of 11.48 ft.The highest inundation, of at lea  read more..

How To Remove Smoke Damage From Furniture

Both ESPs and ionizers produce ozone as a by-product of the ion-generating technology they use.Another type of electronic air cleaner technology, photo catalytic oxidation (PCO) with ultra violet light, has recently entered the market, Smoke Damage How To Remove Smoke Damage From Furniture but is not very common yet. All of these electron  read more..

About Radon Radon Myths

Radon Myths MYTH: Scientists aren't sure radon really is a problem. FACT: Although some scientists dispute the precise number of deaths due to radon, all the major health organizations (like the Centers for Disease Control and Prevention, Radon Mitigation About Radon Radon Myths the American Lung Association and the American  read more..