AT&T INSTALLATION REQUIREMENT CHANGE NOTIFICATION - AT&T-TP TO: ALL AT&T INSTALLATION SUPPLIERS Date:

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1 AT&T INSTALLATION REQUIREMENT CHANGE NOTIFICATION - AT&T-TP TO: ALL AT&T INSTALLATION SUPPLIERS Date: EFFECTIVE DATE: 5 days from posted date or as per Supplier s Contract Submitter s Name: Brian Jenschke TP: TP76300 Section: G Subsection: 5 Subsection: 5.1 Subject: NEA Floor Drilling Forms Revised Figures G2 & G3 Action: Modification X Section Title: POWER Section Title: DOCUMENTATION Subsection Title: General Prior to Change: Figures G1 and G2 are dated VALID UNTIL July 28, General The following forms shall be used to document the floor drilling procedures and cutting/lifting procedures described in this section: a) Training Attendance Form (Figure G-1) b) Negative Exposure Assessment Form Cutting/lifting (Figure G-2) c) Negative Exposure Assessment Form - Floor drilling (Figure G-3) d) Negative Exposure Assessment Form Notice of Non-Conformance Form (Figure G-4) e) Material Disposition Record Form (Section E, Figure E-5) Post Change: Figures G1 and G2 are dated VALID UNTIL July 24, General The following forms shall be used to document the floor drilling procedures and cutting/lifting procedures described in this section: a) Training Attendance Form (Figure G-1) b) Negative Exposure Assessment Form Cutting/lifting (Figure G-2) c) Negative Exposure Assessment Form - Floor drilling (Figure G-3) d) Negative Exposure Assessment Form Notice of Non-Conformance Form (Figure G-4) e) Material Disposition Record Form (Section E, Figure E-5) Replacement Figures are attached on following page: Questions relative to this IRCN should be addressed to Laurie Gustin at Laurie Gustin Project Manager Area Manager, NP&E Enterprise Technology Support Release Approved ASSOCIATE DIRECTOR-ENVIRONMENTAL HEALTH Date: (Gladys Haecker) Page 1 of 1

2 NEGATIVE EXPOSURE ASSESSMENT for LIFTING PIECES OF ASBESTOS-CONTAINING FLOOR COVERING Holes larger than 1-inch in diameter For use in AT&T buildings in authorized States only For use only by authorized contractors and AT&T employees This form may not be altered except as authorized by AT&T REVISED July 24, 2006 VALID UNTIL July 24, 2007 A. Description of current job 1. This work practice is used to provide a clean surface in preparation for core drilling through a concrete slab or for other purposes. The work practice consists of removing pieces of asbestos-containing resilient floor coverings with a chisel and using soapy water and/or shaving cream to control debris and fiber release. This NEA is applicable to both vinyl floor tile and sheet vinyl/rolled goods such as linoleum with asbestos backing material. 2. Type and amount of material - Work will be performed on 9" x 9" and/or 12" x 12" resilient floor tile and/or sheet/rolled vinyl floor covering such as linoleum, installed on a concrete floor, and on the associated adhesive mastic. The amount of material removed to core-drill one hole will be normally 9 x 9 or less. 3. Type and percent asbestos - The floor covering is presumed to contain asbestos and no samples have been taken for analysis. 4. Engineering controls - No engineering controls are required. 5. Worker's training and experience - Workers have completed a 2-hour Awareness Training course, plus training in use of the procedure. This training included "hands-on" exercises using non-asbestos floor coverings similar to the asbestos-containing material on which the work will be performed. 6. Class of work - Class III work - Maintenance and repair on resilient floor covering. B.1 Initial Exposure Assessment (IEA) - Floor Tile 1. Initial Exposure Assessment (IEA) was completed on January 27, a. Name of person performing IEA: Andrew F. Oberta, MPH, CIH, The Environmental Consultancy, Austin, TX, a licensed asbestos consultant (TDH License No ). b. Was a project design completed for this project? Yes. Test procedures and air sampling procedures were prepared, and a drawing of the test facility was provided. d. Results of an 8-hr TWA: No 8-hr TWA exposures were calculated. The sample results in Table 1a are for the actual duration of sampling, which was 120 minutes for each test. 8-hr TWA exposures would be less than the values in Table 1, all of which are below the PEL of 0.1 fibers/cc. e. Results of a 30-minute STEL: All of the EL samples are below the excursion limit of 1.0 fibers/cc. g. Are the results less than the PEL and the EL? Yes. Also, the 95% UCL is below the PEL and EL. materials, and that work is limited to resilient floor tile. Table 1a. Summary of Personal Samples for tile lifting Collected January 26-27, 2000 PEL samples EL samples No. of samples 6 22 Range, fibers/cc Average, fibers/cc % UCL, fibers/cc Cutting and Lifting NEA Form Page 1 of 3

3 Cutting and Lifting NEA Form Holes larger than 1-inch in diameter Page 2 of 3 Make sure you have the correct form!!!!! 2. Annual Updates have been conducted. The most recent is summarized below. c. Were engineering controls implemented as designed? No engineering controls were necessary, based on the Initial Exposure Assessment and previous updates. e. Results of a 30-minute EL: All of the EL sample results are less than the excursion limit of 1.0 f/cc. materials, and that work is limited to resilient floor tile. See Table 2a below. B.2 Initial Exposure Assessment (IEA) - Resilient Sheet Vinyl Flooring Cutting and Lifting (Linoleum) 1. Initial Exposure Assessment (IEA) was completed on September 11, 2003 a. Name of person performing IEA: Peter D. Cappel, Senior Industrial Hygienist, Gobbell Hays Partners, Inc. b. Was a project design completed for this project? Yes. Test procedures and air sampling procedures were prepared. d. Results of an 8-hr TWA: See Table 1b. All air samples collected were below the OSHA Permissible Exposure Limit of 0.1 fibers/cc. e. Results of a 30-minute EL: See Table 1b. All EL air samples collected were below the OSHA Excursion Limit of 1.0 fibers/cc. f. How were these samples analyzed? Phase Contrast Microscopy g. Are the results less than the PEL and the EL? Yes. In addition, the 95% UCL is below the PEL and EL. h. Were the samples taken representative of all operations which will take place during the work? Yes. materials, and that work is limited to resilient sheet vinyl flooring. Table 1b. Summary of Personal Samples for lifting sheet vinyl flooring Collected September 11 and 12, 2003 No. of samples 3 9 Range, fibers/cc <0.016 <0.044 Average, fibers/cc % UCL, fibers/cc Annual Updates have been conducted. The most recent is summarized below. c. Were engineering controls implemented as designed? No engineering controls were necessary, based on the Initial Exposure Assessment and previous updates. e. Results of a 30-minute EL: All of the EL sample results are less than the excursion limit of 1.0 f/cc. materials, and that work is limited to resilient floor tile. See Table 2b below.

4 CUTTING AND LIFTING NEA Form Holes larger than 1-inch in diameter Page 3 of 3 Make sure you have the correct form!!!!! Table 2a. Summary of Personal Samples for lifting floor tile Range, fibers/cc <0.013 <0.039 Average, fibers/cc <0.013 < % UCL, fibers/cc Table 2b. Summary of Personal Samples for lifting sheet vinyl flooring Range, fibers/cc <0.039 Average, fibers/cc < % UCL, fibers/cc *Employer is responsible for obtaining current (within 12 months) air sampling data This project was completed on (check one): Floor Tile Sheet Vinyl Flooring Project/Job Information Con./Project/TEO/Job # 1. Description of work: Floor covering cutting/lifting Date(s) Work Performed: This work will be performed at CLLI City State by employees of Company that you work for C. Certification of Negative Exposure Assessment Based on the information herein, worker exposures during the current job described in Section A are not expected to exceed the Permissible Exposure Limits, based on comparison of the current job to the Initial Exposure Assessment and annual updates described in Section B. Name: PRINT name of competent person Signature: Date: Phone Number: ID (Last 4 digits of SS#) Fax or Mail Last Page of completed NEA form to: NEA Management Center c/o TITAN Engineering Fax: RR 620 North, Suite 621 Austin, TX Phone: Return This Page Only! DO NOT SEND DEBRIS TO THIS ADDRESS

5 For use in AT&T buildings in authorized States only For use only by authorized contractors and AT&T employees This form may not be altered except as authorized by AT&T REVISED July 24, 2006 VALID UNTIL July 24, 2007 A. Description of current job 1. The procedure used for installation of equipment on asbestos-containing resilient floor coverings includes drilling holes in the coverings, using shaving cream to control debris and fiber release. This NEA is applicable to both vinyl floor tile and sheet vinyl/rolled goods such as linoleum with asbestos backing material. 2. Type and amount of material - Work will be performed on 9" x 9" and/or 12" x 12" resilient floor tile and/or sheet/rolled vinyl floor covering such as linoleum, installed on a concrete floor, and on the associated adhesive mastic. 3. Type and percent asbestos - The floor covering is presumed to contain asbestos and no samples have been taken for analysis. 4. Engineering controls - No engineering controls are required. 5. Worker's training and experience - Workers have completed a 2-hour Awareness Training course, plus training in use of the drilling procedure. This training included "hands-on" exercises using non-asbestos floor coverings similar to the asbestos-containing material on which the work will be performed. 6. Class of work - Class III work - Maintenance and repair on resilient floor covering. B. Initial Exposure Assessment (IEA) - Resilient Floor Tile Drilling 1. Initial Exposure Assessment (IEA) was completed on October 23, 1996 a. Name of person performing IEA: Andrew F. Oberta, MPH, CIH, The Environmental Consultancy, Austin, TX, a licensed asbestos consultant (TDH License No ). b. Was a project design completed for this project? Yes. Test procedures and air sampling procedures were prepared, and a drawing of the test facility was provided. d. Results of an 8-hr TWA: No 8-hr TWA exposures were calculated. The sample results in Table 1a are for the actual duration of sampling, which ranged from 20 to 230 minutes (average = 62). 8-hr TWA exposures would be less than the values in Table 1, all of which are below the PEL of 0.1 fibers/cc. e. Results of a 30-minute STEL: All of the EL samples are below the excursion limit of 1.0 fibers/cc. g. Are the results less than the PEL and the EL? Yes. Also, the 95% UCL is below the PEL and EL. provided that the workers receive training in using the procedure, that they use similar equipment and materials, and that work is limited to resilient floor tile. Drilling NEA Form Page 1 of 3 NEGATIVE EXPOSURE ASSESSMENT for DRILLING HOLES IN ASBESTOS-CONTAINING FLOORS Holes up to 1-inch in diameter Table 1a. Summary of Personal Samples for hole drilling on floor tile Collected October 10, 17 and 23, 1996 PEL samples EL samples No. of tests No. of samples Range, fibers/cc Average, fibers/cc % UCL, fibers/cc

6 Drilling NEA Form - Holes up to 1-inch in diameter Page 2 of 3 Make sure you have the correct form!!!!! 2. Annual Updates have been conducted for drilling holes in floor tile. The most recent is summarized below. c. Were engineering controls implemented as designed? No engineering controls were necessary, based on the Initial Exposure Assessment and previous updates. e. Results of the EL: All of the EL sample results are less than the excursion limit of 1.0 f/cc. provided that the workers receive training in using the procedure, that they use similar equipment and materials, and that work is limited to resilient floor tile. See Table 2a below. C. Initial Exposure Assessment (IEA) - Resilient Sheet Vinyl Flooring Drilling (Linoleum) 1. Initial Exposure Assessment (IEA) was completed on September 11 and 12, 2003 a. Name of person performing IEA: Peter D. Cappel, Senior Industrial Hygienist, Gobbell Hays Partners, Inc. b. Was a project design completed for this project? Yes. Test procedures and air sampling procedures were prepared. d. Results of an 8-hr TWA: See Table 1b. All air samples collected were below the OSHA Permissible Exposure Limit of 0.1 fibers/cc. e. Results of a 30-minute EL: See Table 1b. All EL air samples collected were below the OSHA Excursion Limit of 1.0 fibers/cc. f. How were these samples analyzed? Phase Contrast Microscopy g. Are the results less than the PEL and the EL? Yes. In addition, the 95% UCL is below the PEL and EL. materials, and that work is limited to resilient sheet vinyl flooring. Table 1b. Summary of Personal Samples for hole drilling on sheet vinyl flooring Collected September 11 and 12, 2003 No. of samples 3 9 Range, fibers/cc <0.016 <0.044 Average, fibers/cc <0.017 < % UCL, fibers/cc Annual Updates have been conducted for drilling holes in sheet vinyl flooring. The most recent is summarized below. c. Were engineering controls implemented as designed? No engineering controls were necessary, based on the Initial Exposure Assessment. e. Results of the EL: All of the EL sample results are less than the excursion limit of 1.0 f/cc. provided that the workers receive training in using the procedure, that they use similar equipment and materials, and that work is limited to resilient sheet vinyl flooring. See Table 2b below.

7 DRILLING NEA Form - Holes up to 1-inch in diameter Page 3 of 3 Make sure you have the correct form!!!!! Table 2a. Summary of Personal Samples for hole drilling on floor tile Range, fibers/cc <0.013 <0.039-<0.039 Average, fibers/cc <0.013 < % UCL, fibers/cc Table 2b. Summary of Personal Samples for hole drilling on sheet vinyl flooring Range, fibers/cc < Average, fibers/cc % UCL, fibers/cc *Employer is responsible for obtaining current (within 12 months) air sampling data This project was completed on (check one): Floor Tile Sheet Vinyl Flooring Project/Job Information Con./Project/TEO/Job # 1. Description of work: Floor covering drilling Date(s) Work Performed: This work will be performed at CLLI City State by employees of Company that you work for D. Certification of Negative Exposure Assessment Based on the information herein, worker exposures during the current job described above are not expected to exceed the Permissible Exposure Limits, based on comparison of the current job to the Initial Exposure Assessment and annual updates described in Section B. Name: Signature: Date: PRINT name of competent person Last 4 digits of SS# Phone Number: Return Last Page of Completed NEA Form to: NEA Management Center c/o TITAN Engineering Fax: RR 620 North, Suite 621 Austin, TX Phone: Return This Page Only! DO NOT SEND DEBRIS TO THIS ADDRESS