You are employed by Be Safe Consulting, Inc. (BSCI), as an entry level safety consultant. You report directly to Bob Sanders, the supervising Certified Safety Professional (CSP). For the last two months you have been assigned to conduct a comprehensive safety evaluation for Acme Manufacturing Co. Based on the observations, calculations, and recommendations in Unit II through Unit VIII prepare a Comprehensive Report to Bob Sanders, who will, in turn, use this information to prepare a final report to Acme Manufacturing Co. Board of Directors. While the Board of Directors may be looking for detailed business impacts, Bob Sanders is looking for a detail of potential employee hazard exposures and your recommendation rationale (calculations, observations, and/or regulation). Ventilation Report You are employed by Be Safe Consulting, Inc. (BSCI) as an entry level safety consultant. You report directly to Bob Sanders, the supervising Certified Safety Professional (CSP). BSCI has been contracted by Acme Manufacturing Co. to conduct a study to determine employee exposures to various particulates and gases. In addition, your company has been contracted to determine if the current ventilation systems that are in place are adequate to protect employees from an over exposure to these chemicals. After conducting a field assessment, prepare a written report that Bob Sanders can utilize to prepare a final comprehensive report for the Board of Directors. During your field investigation, you find the following field observations: Welding Room The company has six welding booths, or areas that are partitioned only for the use of welding curtains. The booth is open to mixing in the front and top. The company is worried about the welders exposure to iron oxide (PEL 10 mg/m). For a valid sample, you must have a minimum of six hours of sampling (The remaining two hours of the work day is considered to be equal to or less than the sampled exposure. As a result of your air sampling over an eight-hour time period (., the work schedule), you receive the following analytical report: Name Location Conc. 1 Time 1 Conc. 2 Time 2 Conc. 3 Time 3 Anne Welding Booth #1 mg/m 150 min. mg/m 150 min mg/m 240 min OSH 4308, Advanced Concepts in Environmental Safety Management 2 Frank Worldly Booth #2 mg/m 180 min mg/m 120 min mg/m 240 min Jim Young Booth #3 mg/m 205 min mg/m 125 min mg/m 150 min Betty Johnson Booth #4 mg/m 165 min mg/m 72 min mg/m 123 min Jack Jones Booth #5 mg/m 190 min mg/m 149 min mg/m 140 min Joey Apperton Booth #6 mg/m 155 min mg/m 90 min mg/m 46 min Based on this information, determine the employees actual exposure to iron oxide, whether the samples were valid, and if not, why? Show your work either in the report or as an appendix. During further evaluations of the welding booths, you determine that each booth utilizes a local exhaust system to remove the iron oxide and other contaminants prior to mixing with the breathing air. You take the following measurements: Location Air Velocity (fpm) Work distance from exhaust opening (in inches) Duct Diameter (in inches) Flow Rate (cfm) Booth #1 683 18 8 Unknown Booth #2 Unknown 16 8 12,375 Booth #3 710 16 12 Unknown Booth #4 184 26 8 Unknown Booth #5 Unknown 22 8 9721 Booth #6 Unknown 18 12 11421 After taking the air samples for employee exposures to iron oxide, then measuring and calculating the performance of the local exhaust ventilation (paying particular attention to the specifics), what recommendations would you make to reduce the employees overexposure, if any, to the ventilation systems? Hazardous Materials Storage Area As part of your assessment, you have been asked to evaluate and determine if the hazardous materials storage area has adequate ventilation. In addition to the federal requirements, Acmes insurance carrier requires that they have a minimum of 12 air changes per hour. In your evaluation, you collect the following information: Area Width (ft.) Area Length (ft.) Area Height (ft.) Ventilation Supply #1 (volume-cfm) Ventilation Supply #1 (volume-cfm) 22 30 14 874 993 Determine if the current hazardous materials storage area is adequate and meets the requirements of Acmes insurance carrier. What recommendations would you make to correct the discrepancies, if any? Foundry Room Acme has a foundry room, which is nearing the point of being outdated in terms of engineering controls. For example, one employee stands near an operation that has a canopy hood exhaust and routinely puts his face in the flow of the hood, causing him to inhale particulates and gases that are directly being drawn into the hood. Part of your evaluation is to make a recommendation for a new type of exhaust system. Which one would you recommend, and why?