INDUSTRIAL HYGIENE REPORT

Transcription

1 INDUSTRIAL HYGIENE REPORT CHEMICAL AIR MONITORING NOISE MONITORING PREPARED FOR: Jeremy Spalvieri August 5, 2010 (918) (918)

2 1. INTRODUCTION 2 2. HEALTH EFFECTS AND EXPOSURE LIMITS NOISE MONITORING CHEMICAL AIR MONITORING 2 3. SAMPLING AND ANALYTICAL METHODS Personal Noise Monitoring Chemical Air Monitoring 4 4. RESULTS PERSONAL NOISE MONITORING CHEMICAL AIR MONITORING 4 5. CONCLUSIONS PERSONAL NOISE MONITORING CHEMICAL AIR MONITORING 5 6. RECOMMENDATIONS PERSONAL NOISE MONITORING CHEMICAL AIR MONITORING 6 7. ATTACHMENTS 6 1

3 1. INTRODUCTION At the request of Jeremy Spalvieri, EHS Coordinator with Chesapeake MidCon Compression, L.L.C., chemical and noise monitoring was conducted at Carlsbad, New Mexico. Monitoring was performed on August 5, HEALTH EFFECTS AND EXPOSURE LIMITS 2.1. NOISE MONITORING Noise is usually described as sound which carries no significant information and whose intensity can vary randomly over time. Unprotected exposure to harmful levels of noise can cause hearing loss. Noise at high levels can be a safety hazard due to annoyance and interference with communication. The Occupational Safety and Health Administration (OSHA) limit for noise is 90 dba as a Time Weighted Average (TWA) defined as an 8 hour shift. The action level is 85 dba for an 8 hour shift (TWA) and is used in determining workers who must be included in a Hearing Conservation Program per 29 CFR A Hearing Conservation Program consists of written program, annual audiograms, annual training, use of personal protective equipment, monitoring and recordkeeping CHEMICAL AIR MONITORING Introduction In the industrial environment, Occupational Safety and Health Administration (OSHA) Permissible Exposure Limits (PELs) and American Conference of Governmental Industrial Hygienist Threshold Limit Values (ACGIH TLVs) are used as exposure limits. PELs are similar to the TLVs and are used by industrial hygienists as guidelines or recommendations. The TLV is used when it is lower than the PEL. PELs/TLVs are defined as airborne concentrations of substances and represent conditions under which it is believed that nearly all workers may be repeatedly exposed day after day without adverse health effects. There are 3 different types of PEL/TLVs. The Time Weighted Average (TWA) refers typically to 8 hour samples. The TWA is calculated using the following formula: TWA calculated Time f / cc1) ( Time2 f / cc ) ( Time 480 f / cc ) ( 1 2 n n The Short Term Exposure Limit (STEL) is the maximum concentration to which workers can be exposed for a short period of time (15 minutes). Ceiling limits (C) are concentrations which must not be exceeded anytime during the workday. For personal samples, the sampling media was attached to the employee's lapel and the pump was worn on the employee's belt Health Effects and Exposure Limits Health effects of the various constituents are as follows: 2

4 Benzene - Short-term (acute) exposure to benzene can cause irritation to the eyes, nose, throat, and skin. It can also cause central nervous system disorders such as dizziness, euphoria, giddiness, headache, nausea, weakness, convulsions, and paralysis. Long-term (chronic) exposure has produced anorexia, nervousness, irritability, dermatitis, labored breathing, and irreversible injury to the blood. Forming organs (aplastic anemia and leukemia). Current studies suggest that low benzene exposures (about 10 ppm) have been associated with an increased risk of leukemia. The OSHA eight hour TWA PEL is 1 ppm with an action level of 0.5 ppm. OSHA also has a 15-minute STEL of 5 ppm. Ethyl Benzene - Exposure to ethyl benzene may cause irritation of the skin and mucous membranes. It may also cause transient eye irritation at concentrations of 200 ppm. OSHA and ACGIH have set limits of 100 ppm as a TWA. There is also an ACGIH TLV of 125 ppm as a STEL. Toluene - The most common effect of overexposure to toluene is irritation of the mucous membranes and central nervous system depression (headaches, lassitude, light-headedness, uncoordination, fatigue, decreased reaction time, etc.). Unlike closely related compound benzene, toluene does not appear to be toxic to the bone marrow. The ACGIH TLV for toluene is 20 ppm with a skin exposure designation. The OSHA PEL is 200 ppm as a TWA and 300 ppm as a ceiling limit. Xylene - Concentrations of 200 ppm are irritating to the eyes, nose, and throat. Extremely high exposures have resulted in kidney and liver damage. The ACGIH TLV is 100 ppm that was set to minimize the irritant effects of xylene and reduce the risk of central nervous system depression or chronic injuries; the OSHA standard is also 100 ppm. There is also an ACGIH TLV of 150 ppm as a STEL. Hydrogen Sulfide -Hydrogen sulfide is a toxic, flammable colorless gas with a distinct "rotten-egg" smell. Inhalation of high concentrations can cause dizziness, headache, and nausea. Exposure to higher concentrations can result in unconsciousness, coma, and death. Chronic exposure can damage memory, nerve tissue, facial muscles, and eyes. Hydrogen sulfide poses a serious fire hazard when accidentally release. The gas is heavier than air and may spread long distances. The OSHA PEL is 20 ppm as a ceiling limit. The ACGIH TLV is 1 ppm, with a STEL of 5 ppm. Flammability Percent Lower Explosive limit (% LEL) in excess of 10% is of concern depending on what type of work is being done and where the work being done. 3. SAMPLING AND ANALYTICAL METHODS 3.1. PERSONAL NOISE MONITORING Full shift personal noise monitoring was performed using various models of Quest noise dosimeters. Dosimeter microphones were placed on the lapel of workers 3

5 near the ear. Dosimeters were calibrated before and after use. The dosimeters were set up for hearing conservation: 90 dba criterion level, a weighted, slow response, 5 db doubling rate and 80 dba threshold CHEMICAL AIR MONITORING The following analytical methods were used during laboratory analysis. Benzene, Toluene, Ethyl Benzene, Xylene (BTEX) was sampled using 3M Organic Vapor Monitors. NIOSH Method 1501 was the analytical method used. Personal monitoring of Percent Lower Explosive Limit (% LEL) and Hydrogen Sulfide was accomplished using a RKI direct reading, datalogging, 4 gas meter. The meter was calibrated before use. Hazard Monitoring Worksheets are contained in Attachment 1. All samples were sent via Chain of Custody form to Analytics Corporation for analysis. The American Industrial Hygiene Association (AIHA) accredits this laboratory. A blank was also prepared for each set of and type of constituent. 4. RESULTS 4.1. PERSONAL NOISE MONITORING Results are shown in Table 4-1. Results are shown graphically in Attachment 2. Employee 8 Hour Average (dba) TABLE Hour Action Level (dba) xx.xx = over the OSHA Noise Action Limit xx.xx = over the OSHA Permissible Noise Exposure Limit 8 Hour PEL TWA (dba) 8 Hour TLV- TWA (dba) Patrick Foreman Brandon Blevins Russell McKibben CHEMICAL AIR MONITORING Chemical air monitoring results are shown in Table 4-2 and graphically in Attachment 3 (including RKI direct reading results). Original laboratory reports are given in Attachment 4. 4

6 TABLE 4-2 Employee Sample Duration (minutes) Analyte Sample Concentration TWA 1 <xx.xx or BDL= Below Detectable Limits 8 hour OSHA PEL 8 hour ACGIH TLV Michael Harvey 480 Brian Stark 500 Patrick Foreman 530 Benzene <0.551 ppm 1 1 ppm 0.5 ppm Toluene ppm 20 ppm Ethyl Benzene <0.264 ppm 100 ppm 100 ppm Xylene <0.352 ppm 100 ppm 100 ppm Benzene < ppm 1 ppm 0.5 ppm Toluene <0.138 ppm 200 ppm 20 ppm Ethyl Benzene <0.275 ppm 100 ppm 100 ppm Xylene <0.367 ppm 100 ppm 100 ppm Benzene < ppm 1 ppm 0.5 ppm Toluene ppm 200 ppm 20 ppm Ethyl Benzene <0.239 ppm 100 ppm 100 ppm Xylene <0.318 ppm 100 ppm 100 ppm 5. CONCLUSIONS 5.1. PERSONAL NOISE MONITORING No sample results were above the 8 hour exposure Action Level of 85 dba CHEMICAL AIR MONITORING All sample results were below the 8 hour PEL-TWA standards. 6. RECOMMENDATIONS 6.1. PERSONAL NOISE MONITORING The following recommendations are made: 1. Notify the workers who were part of the air monitoring of the results using the notification letters in Attachment 5. The information is considered confidential. 2. Post graphs without the names of the workers monitored so all employees can be notified of the results. 5

7 6.2. CHEMICAL AIR MONITORING The following recommendations are made: 1. Notify the workers who were part of the air monitoring of the results using the notification letters in Attachment 5. The information is considered confidential. 2. Post graphs without the names of the workers monitored so all employees can be notified of the results. 7. ATTACHMENTS 6

8 ATTACHMENT 1 Hazard Monitoring Worksheets 7

9 EMPLOYEE NAME: HAZARD MONITORING RECORD RECORD NUMBER: Michael Harvey 8510 A DATE: MidCon Compression, L.L.C.- Permian South 8/5/2010 ADDRESS CITY STATE ZIP DEPARTMENT OR AREA: 107 West Roosevelt Carlsbad New Mexico Compressor Mechanic FACILITY: JOB CLASSIFICATION, OPERATION OR PROCESS DESCRIPTION Preventative maintenance on TM 22, changed sparkplugs, oil and general maintenance. TM 27, Replaced Battery and check electrical system. CHEMICAL AIR MONITORING AIR SAMPLING DEVICE SURVEYOR Badge Colorimetric Tubes Pump Greg Steele, CSP SAMPLE TYPE COLLECTION MEDIA ANALYTICAL METHOD Personal Area Tube Filter Badge Model Direct Reading NIOSH M Pump/Badge Number Sample Number Start Stop HJ7057 Stroke Count Pump Duration (Min.) :40 15: : : -- : : -- : : SAMPLE TYPE Total Time Calibration Rate (LPM) BEFORE AFTER AVERAGE Volume (Liters) Results 480 See Report Count Start Count Stop Total Count ml/count Duration (minutes) Volume (liters) Personal Area NOISE MONITORING SAMPLING DEVICE ANALYTICAL METHOD Dosimeter # Calibration Start Stop Duration (minutes) Dose (%) L avg Max Level Hearing Protection NRR (dba) Engineering Controls: Personal Protective Equipment: Head Protection Hard Hat Respiratory Protection none : : : : Protective Clothing Other: Long Sleeve-100% cotton Eye Protection Z87 Safety Glasses Side Shields CONTROLS Hand Protection Leather Foot Protection Steel Toed Other: Ear Plugs Type Make and Model Cartridge NOTES 8

10 EMPLOYEE NAME: HAZARD MONITORING RECORD RECORD NUMBER: Brian Stark 8510 B FACILITY: DATE: MidCon Compression, L.L.C.- Permian North 8/5/2010 ADDRESS CITY STATE ZIP DEPARTMENT OR AREA: 107 West Roosevelt Carlsbad New Mexico Compressor Mechanic JOB CLASSIFICATION, OPERATION OR PROCESS DESCRIPTION Work activities included changing oil and oil filters-hackberry 33 Fed #1; changing oil and adjusted valves on a 330 CF-started and loaded unit during 1 st half of shift. Little Fed #1-checked unit; During the 2 nd half of shift-- dumped (pulls liquid from system) scrubbers and blowcase; loaded up tank and containment at Western Marketing yard. This was a typical work shift with typical work tasks conducted. CHEMICAL AIR MONITORING AIR SAMPLING DEVICE SURVEYOR Badge Colorimetric Tubes Pump Greg Steele, CSP SAMPLE TYPE COLLECTION MEDIA ANALYTICAL METHOD Personal Area Pump/Badge Number Sample Number Start Stop HJ7099 Stroke Count Pump Tube Filter Badge Model Direct Reading NIOSH M 3500 RKI GX 2009 Duration (Min.) :40 16: : : -- : : -- : : SAMPLE TYPE Total Time 813 Calibration Rate (LPM) BEFORE AFTER AVERAGE Volume (Liters) Results 500 See Report Count Start Count Stop Total Count ml/count Duration (minutes) Volume (liters) Personal Area NOISE MONITORING SAMPLING DEVICE ANALYTICAL METHOD Dosimeter # Calibration Start Stop Duration (minutes) Dose (%) L avg Max Level Hearing Protection NRR (dba) Engineering Controls: Personal Protective Equipment: Head Protection Hard Hat Respiratory Protection none : : : : Protective Clothing Other: Long Sleeve-100% cotton Eye Protection Z87 Safety Glasses Side Shields CONTROLS Hand Protection Leather Foot Protection Steel Toed Other: Ear Plugs Type Make and Model Cartridge NOTES 9

11 EMPLOYEE NAME: HAZARD MONITORING RECORD RECORD NUMBER: Patrick Foreman 8510 C FACILITY: DATE: MidCon Compression, L.L.C.- Permian North 8/5/2010 ADDRESS CITY STATE ZIP DEPARTMENT OR AREA: 107 West Roosevelt Carlsbad New Mexico Compressor Mechanic JOB CLASSIFICATION, OPERATION OR PROCESS DESCRIPTION Work activities included Marb. Lease-Showstopper #1-new compressor hook-up; some venting gas; small engine, back hoe during the 1 st half of shift. The 2 nd half of shift--marb. Lease-Showstopper 7-1 same as above; Ocho Cinco, Unit PM, compressor running. This was a typical work shift with typical work tasks conducted. However, there was no running compressor on first lease. CHEMICAL AIR MONITORING AIR SAMPLING DEVICE SURVEYOR Badge Colorimetric Tubes Pump Greg Steele, CSP SAMPLE TYPE COLLECTION MEDIA ANALYTICAL METHOD Personal Area Tube Filter Badge Model Direct Reading NIOSH M Pump/Badge Number Sample Number Start Stop HJ7091 Stroke Count Pump Duration (Min.) :40 16: : : -- : : -- : : SAMPLE TYPE Total Time Calibration Rate (LPM) BEFORE AFTER AVERAGE Volume (Liters) Results 530 See Report Count Start Count Stop Total Count ml/count Duration (minutes) Volume (liters) Personal Area Quest Micro 14 Dosimeter # Calibration Start Stop NOISE MONITORING Duration (minutes) SAMPLING DEVICE Dose (%) 5A 114 7:40 4: : : : : Engineering Controls: Personal Protective Equipment: Head Protection Hard Hat Respiratory Protection none Protective Clothing Other: Long Sleeve-100% cotton Eye Protection Z87 Safety Glasses Side Shields CONTROLS L avg Hand Protection Leather Max Level ANALYTICAL METHOD Microphone; Direct Reading Hearing Protection Foot Protection Steel Toed NRR (dba) 3M Pistonz 29 Other: Ear Plugs Type Make and Model Cartridge NOTES 10

12 EMPLOYEE NAME: HAZARD MONITORING RECORD RECORD NUMBER: Brandon Blevins 8510 D FACILITY: DATE: Midcon Compression, L.L.C. - Permian North 8/5/2010 ADDRESS CITY STATE ZIP DEPARTMENT OR AREA: 107 West Roosevelt Carlsbad New Mexico Field Mechanic JOB CLASSIFICATION, OPERATION OR PROCESS DESCRIPTION Work activities included visiting Federal AI (Chesapeake) unit start-up and repair gas starter during 1 st half of shift. Visited Hurl C. Marb, during 2 nd half of shift- added coolant as well as adjusted speed and put unit online. This was a typical work shift with typical work tasks conducted. CHEMICAL AIR MONITORING AIR SAMPLING DEVICE SURVEYOR Badge Colorimetric Tubes Pump Greg Steele, CSP SAMPLE TYPE COLLECTION MEDIA ANALYTICAL METHOD Personal Area Pump/Badge Number Sample Number Start Stop Stroke Count Pump SAMPLE TYPE Tube Filter Badge Model Direct Reading RKI GX : : -- : : -- : : Duration (Min.) Total Time 927 Calibration Rate (LPM) BEFORE AFTER AVERAGE Volume (Liters) Results See Report Count Start Count Stop Total Count ml/count Duration (minutes) Volume (liters) Personal Area Quest Micro 14 Dosimeter # Calibration Start Stop NOISE MONITORING Duration (minutes) SAMPLING DEVICE Dose (%) 44A :40 17: : : : : Engineering Controls: Personal Protective Equipment: Head Protection Hard Hat Respiratory Protection none Protective Clothing Other: Long Sleeve-100% cotton Eye Protection Z87 Safety Glasses Side Shields CONTROLS L avg Hand Protection Leather Max Level ANALYTICAL METHOD Microphone; Direct Reading Hearing Protection Foot Protection Steel Toed NRR (dba) 3M Pistonz 29 Other: Ear Plugs Type Make and Model Cartridge NOTES 11

13 EMPLOYEE NAME: HAZARD MONITORING RECORD RECORD NUMBER: Russell McKibben 8510 E FACILITY: DATE: Midcon Compression, L.L.C. - Permian North 8/5/2010 ADDRESS CITY STATE ZIP DEPARTMENT OR AREA: 107 West Roosevelt Carlsbad New Mexico Compressor Mechanic JOB CLASSIFICATION, OPERATION OR PROCESS DESCRIPTION Work activities included Yates Petroleum running tubing for compressor during the 1 st half of shift. The 2 nd half of shift--troubleshoot compressor, fixed problem, put machine back online (Chesapeake). This was a typical work shift with typical work tasks conducted. However, sometimes around more machines than sampling day. Overall less noise than normal operations. CHEMICAL AIR MONITORING AIR SAMPLING DEVICE SURVEYOR Badge Colorimetric Tubes Pump Greg Steele, CSP SAMPLE TYPE COLLECTION MEDIA ANALYTICAL METHOD Personal Area Tube Filter Badge Model Direct Reading Pump/Badge Number Sample Number Start Stop Stroke Count Pump SAMPLE TYPE : : -- : : -- : : Duration (Min.) Total Time Calibration Rate (LPM) BEFORE AFTER AVERAGE Volume (Liters) Results See Report Count Start Count Stop Total Count ml/count Duration (minutes) Volume (liters) Personal Area Quest Micro 14 Dosimeter # Calibration Start Stop NOISE MONITORING Duration (minutes) SAMPLING DEVICE Dose (%) 5A 114 7:45 17: : : : : Engineering Controls: Personal Protective Equipment: Head Protection Hard Hat Respiratory Protection none Protective Clothing Other: Long Sleeve-100% cotton Eye Protection Z87 Safety Glasses Side Shields CONTROLS L avg Hand Protection Leather Max Level ANALYTICAL METHOD Microphone; Direct Reading Hearing Protection Foot Protection Steel Toed NRR (dba) 3M Pistonz 29 Other: Ear Plugs Type Make and Model Cartridge NOTES 12

14 ATTACHMENT 2 Noise Monitoring Graphs 13

15 carlsbad, new mexico Noise Monitoring August 5, dba

16 ATTACHMENT 3 Air Monitoring Graphs 15

17 carlsbad, new mexico Benzene Monitoring August 5, ppm BDL BDL BDL BDL=Below Detectable Limits 16

18 10.0 BRANDON BLEVINS August 5, % LEL Hydrogen Sulfide-ppm TIME 17

19 20.0 BRian stark August 5, :49 9:19 9:49 10:19 10:49 11:19 11:49 12:06 12:34 13:04 13:29 13:59 14:29 14:59 15:17 15:44 16:14 16:44 % LEL Hydrogen Sulfide-ppm TIME 18

20 ATTACHMENT 4 Laboratory Reports 19

21 Analytics Corporation Stony Run Lane Ashland, VA Phone: (804) Fax: (804) August 13, 2010 Cass W i lard Paradigm Consulting Group, LLC Suite North Owasso Expressway Owasso, OK Lab Workorder ID Client Project ID Client/Profile Received Reported August 12, 2010 Dear Cass W i lard: 3781 CHK Midland Paradigm Consulting Group, LLC [8150] August 10, 2010 Attached are the results we obtained on the analysis ofyour samples submitted to Analytics on August 10, 2010.Any Chains-of-Custody associated by this sample group are enclosed. Air concentrations are calculated as a convenience to the client and the overa laccuracy ofthis result depends on both the accuracy ofthe air volume and the amount found by analysis. Theoreticalair volumes for passive monitors are calculated using the sampling time submitted and the manufacture's listed sampling rate for each compound.results provided in this report relate only to the items tested. For blanks and non-detects the results indicated with a '<'value represents the reporting limit for the analysis. Unless otherwise noted results are not corrected for blank values. Calculations for TW A assume a lunsampled time is equalto zero concentration. Unless the signature ofthe appropriate manager(s)appears on this report, this report should be considered PRELIMINARY and is subject to change. W e appreciate your confidence in a lowing Analytics to be your testing laboratory. Any questions regarding this report can be addressed by ca ling our customer services department at (800) Sincerely, James A.Calpin, CIH Enclosures Friday, August 13, :27:54 PM Report ID: Page 1 of

22 Final Report Suite North Owasso Expressway Owasso, OK Customer: PSC00083 Attention: Cass W i lard W ork Requested By: Customer PO: Analytics Corporation Stony Run Lane Ashland, VA Phone: (804) Fax: (804) AIHA Accreditation # 176, ID Phone: Location: Date Received: 8/10/2010 W orkorder ID: CHK Midland Lab ID: Sample ID: Media: 3M POVM 3500 Sampling Date: 8/2/2010 Sampling Time: 480 Analyte Method Analysis Date Volum e Reporting Limit RESULT Front Rear Total Concentration 8-Hour TWA Qual Benzene NIOSH 1501M 8/10/ L 3 ug <3 ug <.176 mg/m3 <.0551 ppm <.0551 ppm Toluene NIOSH 1501M 8/10/ L 7.5 ug <7.5 ug <.498 mg/m3 <.132 ppm <.132 ppm Ethylbenzene NIOSH 1501M 8/10/ L 15 ug <15 ug <1.14 mg/m3 <.264 ppm <.264 ppm HydrocarbonsTotalas nhexane NIOSH 1500M 8/10/ L 30 ug <30 ug <1.95 mg/m3 <.554 ppm <.554 ppm Xylene (total) NIOSH 1501M 8/10/ L 20 ug <20 ug <1.53 mg/m3 <.352 ppm <.352 ppm Lab ID: Sample ID: Media: 3M POVM 3500 Sampling Date: 8/2/2010 Sampling Time: 480 Analyte Method Analysis Date Volum e Reporting Limit RESULT Front Rear Total Concentration 8-Hour TWA Qual Benzene NIOSH 1501M 8/10/ L 3 ug <3 ug <.176 mg/m3 <.0551 ppm <.0551 ppm Toluene NIOSH 1501M 8/10/ L 7.5 ug <7.5 ug <.498 mg/m3 <.132 ppm <.132 ppm Ethylbenzene NIOSH 1501M 8/10/ L 15 ug <15 ug <1.14 mg/m3 <.264 ppm <.264 ppm HydrocarbonsTotalas nhexane NIOSH 1500M 8/10/ L 30 ug <30 ug <1.95 mg/m3 <.554 ppm <.554 ppm Xylene (total) NIOSH 1501M 8/10/ L 20 ug <20 ug <1.53 mg/m3 <.352 ppm <.352 ppm Lab ID: Sample ID: Media: 3M POVM 3500 Sampling Date: 8/2/2010 Sampling Time: 480 Analyte Method Analysis Date Volum e Reporting Limit RESULT Front Rear Total Concentration 8-Hour TWA Qual Benzene NIOSH 1501M 8/10/ L 3 ug <3 ug <.176 mg/m3 <.0551 ppm <.0551 ppm Toluene NIOSH 1501M 8/10/ L 7.5 ug 10.8 ug.717 mg/m3.19 ppm.19 ppm Ethylbenzene NIOSH 1501M 8/10/ L 15 ug <15 ug <1.14 mg/m3 <.264 ppm <.264 ppm HydrocarbonsTotalas nhexane NIOSH 1500M 8/10/ L 30 ug 177 ug 11.5 mg/m ppm 3.27 ppm Xylene (total) NIOSH 1501M 8/10/ L 20 ug <20 ug <1.53 mg/m3 <.352 ppm <.352 ppm Friday, August 13, :27:54 PM Page 2 of6 21 Report ID:

23 Final Report Suite North Owasso Expressway Owasso, OK Customer: PSC00083 Attention: Cass W i lard W ork Requested By: Customer PO: Analytics Corporation Stony Run Lane Ashland, VA Phone: (804) Fax: (804) AIHA Accreditation # 176, ID Phone: Location: Date Received: 8/10/2010 W orkorder ID: CHK Midland Lab ID: Sample ID: Media: 3M POVM 3500 Sampling Date: 8/4/2010 Sampling Time: 495 Analyte Method Analysis Date Volum e Reporting Limit RESULT Front Rear Total Concentration 8-Hour TWA Qual Benzene NIOSH 1501M 8/10/ L 3 ug <3 ug <.171 mg/m3 <.0534 ppm <.0551 ppm Toluene NIOSH 1501M 8/10/ L 7.5 ug <7.5 ug <.483 mg/m3 <.128 ppm <.132 ppm Ethylbenzene NIOSH 1501M 8/10/ L 15 ug <15 ug <1.11 mg/m3 <.256 ppm <.264 ppm HydrocarbonsTotalas nhexane NIOSH 1500M 8/10/ L 30 ug <30 ug <1.89 mg/m3 <.537 ppm <.554 ppm Xylene (total) NIOSH 1501M 8/10/ L 20 ug <20 ug <1.48 mg/m3 <.341 ppm <.352 ppm Lab ID: Sample ID: Media: 3M POVM 3500 Sampling Date: 8/4/2010 Sampling Time: 490 Analyte Method Analysis Date Volum e Reporting Limit RESULT Front Rear Total Concentration 8-Hour TWA Qual Benzene NIOSH 1501M 8/10/ L 3 ug <3 ug <.172 mg/m3 <.054 ppm <.0551 ppm Toluene NIOSH 1501M 8/10/ L 7.5 ug <7.5 ug <.487 mg/m3 <.129 ppm <.132 ppm Ethylbenzene NIOSH 1501M 8/10/ L 15 ug <15 ug <1.12 mg/m3 <.258 ppm <.264 ppm HydrocarbonsTotalas nhexane NIOSH 1500M 8/10/ L 30 ug <30 ug <1.91 mg/m3 <.543 ppm <.554 ppm Xylene (total) NIOSH 1501M 8/10/ L 20 ug <20 ug <1.5 mg/m3 <.344 ppm <.352 ppm Lab ID: Sample ID: Media: 3M POVM 3500 Sampling Date: 8/3/2010 Sampling Time: 505 Analyte Method Analysis Date Volum e Reporting Limit RESULT Front Rear Total Concentration 8-Hour TWA Qual Benzene NIOSH 1501M 8/10/ L 3 ug <3 ug <.167 mg/m3 <.0524 ppm <.0551 ppm Toluene NIOSH 1501M 8/10/ L 7.5 ug <7.5 ug <.473 mg/m3 <.126 ppm <.132 ppm Ethylbenzene NIOSH 1501M 8/10/ L 15 ug <15 ug <1.09 mg/m3 <.251 ppm <.264 ppm HydrocarbonsTotalas nhexane NIOSH 1500M 8/10/ L 30 ug <30 ug <1.86 mg/m3 <.527 ppm <.554 ppm Xylene (total) NIOSH 1501M 8/10/ L 20 ug <20 ug <1.45 mg/m3 <.334 ppm <.352 ppm Friday, August 13, :27:54 PM Page 3 of6 22 Report ID:

24 Final Report Suite North Owasso Expressway Owasso, OK Customer: PSC00083 Attention: Cass W i lard W ork Requested By: Customer PO: Analytics Corporation Stony Run Lane Ashland, VA Phone: (804) Fax: (804) AIHA Accreditation # 176, ID Phone: Location: Date Received: 8/10/2010 W orkorder ID: CHK Midland Lab ID: Sample ID: Media: 3M POVM 3500 Sampling Date: 8/3/2010 Sampling Time: 485 Analyte Method Analysis Date Volum e Reporting Limit RESULT Front Rear Total Concentration 8-Hour TWA Qual Benzene NIOSH 1501M 8/10/ L 3 ug <3 ug <.174 mg/m3 <.0545 ppm <.0551 ppm Toluene NIOSH 1501M 8/10/ L 7.5 ug <7.5 ug <.492 mg/m3 <.131 ppm <.132 ppm Ethylbenzene NIOSH 1501M 8/10/ L 15 ug <15 ug <1.13 mg/m3 <.261 ppm <.264 ppm HydrocarbonsTotalas nhexane NIOSH 1500M 8/10/ L 30 ug <30 ug <1.93 mg/m3 <.548 ppm <.554 ppm Xylene (total) NIOSH 1501M 8/10/ L 20 ug <20 ug <1.51 mg/m3 <.348 ppm <.352 ppm Lab ID: Sample ID: Media: 3M POVM 3500 Sampling Date: 8/3/2010 Sampling Time: 505 Analyte Method Analysis Date Volum e Reporting Limit RESULT Front Rear Total Concentration 8-Hour TWA Qual Benzene NIOSH 1501M 8/10/ L 3 ug <3 ug <.167 mg/m3 <.0524 ppm <.0551 ppm Toluene NIOSH 1501M 8/10/ L 7.5 ug <7.5 ug <.473 mg/m3 <.126 ppm <.132 ppm Ethylbenzene NIOSH 1501M 8/10/ L 15 ug <15 ug <1.09 mg/m3 <.251 ppm <.264 ppm HydrocarbonsTotalas nhexane NIOSH 1500M 8/10/ L 30 ug <30 ug <1.86 mg/m3 <.527 ppm <.554 ppm Xylene (total) NIOSH 1501M 8/10/ L 20 ug <20 ug <1.45 mg/m3 <.334 ppm <.352 ppm Lab ID: Sample ID: Media: 3M POVM 3500 Sampling Date: 8/5/2010 Sampling Time: 480 Analyte Method Analysis Date Volum e Reporting Limit RESULT Front Rear Total Concentration 8-Hour TWA Qual Benzene NIOSH 1501M 8/10/ L 3 ug <3 ug <.176 mg/m3 <.0551 ppm <.0551 ppm Toluene NIOSH 1501M 8/10/ L 7.5 ug 27.9 ug 1.85 mg/m3.491 ppm.491 ppm Ethylbenzene NIOSH 1501M 8/10/ L 15 ug <15 ug <1.14 mg/m3 <.264 ppm <.264 ppm HydrocarbonsTotalas nhexane NIOSH 1500M 8/10/ L 30 ug 50.4 ug 3.28 mg/m3.931 ppm.931 ppm Xylene (total) NIOSH 1501M 8/10/ L 20 ug <20 ug <1.53 mg/m3 <.352 ppm <.352 ppm Friday, August 13, :27:55 PM Page 4 of6 23 Report ID:

25 Final Report Suite North Owasso Expressway Owasso, OK Customer: PSC00083 Attention: Cass W i lard W ork Requested By: Customer PO: Analytics Corporation Stony Run Lane Ashland, VA Phone: (804) Fax: (804) AIHA Accreditation # 176, ID Phone: Location: Date Received: 8/10/2010 W orkorder ID: CHK Midland Lab ID: Sample ID: Media: 3M POVM 3500 Sampling Date: 8/5/2010 Sampling Time: 460 Analyte Method Analysis Date Volum e Reporting Limit RESULT Front Rear Total Concentration 8-Hour TWA Qual Benzene NIOSH 1501M 8/10/ L 3 ug <3 ug <.184 mg/m3 <.0575 ppm <.0551 ppm Toluene NIOSH 1501M 8/10/ L 7.5 ug <7.5 ug <.519 mg/m3 <.138 ppm <.132 ppm Ethylbenzene NIOSH 1501M 8/10/ L 15 ug <15 ug <1.19 mg/m3 <.275 ppm <.264 ppm HydrocarbonsTotalas nhexane NIOSH 1500M 8/10/ L 30 ug <30 ug <2.04 mg/m3 <.578 ppm <.554 ppm Xylene (total) NIOSH 1501M 8/10/ L 20 ug <20 ug <1.59 mg/m3 <.367 ppm <.352 ppm Lab ID: Sample ID: Media: 3M POVM 3500 Sampling Date: 8/5/2010 Sampling Time: 530 Analyte Method Analysis Date Volum e Reporting Limit RESULT Front Rear Total Concentration 8-Hour TWA Qual Benzene NIOSH 1501M 8/10/ L 3 ug <3 ug <.159 mg/m3 <.0499 ppm <.0551 ppm Toluene NIOSH 1501M 8/10/ L 7.5 ug 8.61 ug.517 mg/m3.137 ppm.152 ppm Ethylbenzene NIOSH 1501M 8/10/ L 15 ug <15 ug <1.04 mg/m3 <.239 ppm <.264 ppm HydrocarbonsTotalas nhexane NIOSH 1500M 8/10/ L 30 ug 54.8 ug 3.23 mg/m3.916 ppm 1.01 ppm Xylene (total) NIOSH 1501M 8/10/ L 20 ug <20 ug <1.38 mg/m3 <.318 ppm <.352 ppm Lab ID: Sample ID:Blank Media: 3M POVM 3500 Sampling Date: Sampling Time: 0 Analyte Method Analysis Date Volum e Reporting Limit RESULT Front Rear Total Concentration 8-Hour TWA Qual Benzene NIOSH 1501M 8/10/ L 3 ug <3 ug Toluene NIOSH 1501M 8/10/ L 7.5 ug <7.5 ug Ethylbenzene NIOSH 1501M 8/10/ L 15 ug <15 ug HydrocarbonsTotalas nhexane NIOSH 1500M 8/10/ L 30 ug <30 ug Xylene (total) NIOSH 1501M 8/10/ L 20 ug <20 ug Friday, August 13, :27:55 PM Page 5 of6 24 Report ID:

26 Analytics Corporation Stony Run Lane Ashland, VA Phone: (804) Fax: (804) AIHA Accreditation # 176, ID Final Report Suite North Owasso Expressway Owasso, OK Customer: PSC00083 Attention: Cass W i lard W ork Requested By: Customer PO: Corrected Report This is a revised report. This workorder was origina ly reported on August 12, :21 PM report ID General Laboratory Com m ents Abbreviations: ug = micrograms, mg = mi ligrams, g = grams ppm = parts per mi lion (volume), ppb = parts per bi lion (volume) mg/m3 = mi ligrams per cubic meter ofair, ug/m3 = micrograms per cubic meter ofair Min = Minutes, Qual= Qualifiers Phone: Location: Date Received: 8/10/2010 W orkorder ID: CHK Midland Friday, August 13, :27:55 PM Page 6 of6 25 Report ID:

27 ATTACHMENT 5 Notification Letter 26

28 To: Patrick Foreman From: Jeremy Spalvieri On August 5, 2010, personal noise monitoring was conducted during various duties. You were involved in this monitoring and this memo is designed to notify you of the results. The result from August 5 th was 76.4 dba. This is below the Occupational Safety and Health Administration (OSHA) Permissible Noise Exposure 8 hour limit of 90 dba. The OSHA Permissible Noise Exposure level is a limit in which it is believed that nearly all healthy workers may be repeatedly exposed without adverse health effects. 27

29 To: Brandon Blevins From: Jeremy Spalvieri On August 5, 2010, personal noise monitoring was conducted during various duties. You were involved in this monitoring and this memo is designed to notify you of the results. The result from August 5 th was 79.2 dba. This is below the Occupational Safety and Health Administration (OSHA) Permissible Noise Exposure 8 hour limit of 90 dba. The OSHA Permissible Noise Exposure level is a limit in which it is believed that nearly all healthy workers may be repeatedly exposed without adverse health effects. 28

30 To: Russell McKibben From: Jeremy Spalvieri On August 5, 2010, personal noise monitoring was conducted during various duties. You were involved in this monitoring and this memo is designed to notify you of the results. The result from August 5 th was 83.0 dba. This is below the Occupational Safety and Health Administration (OSHA) Permissible Noise Exposure 8 hour limit of 90 dba. The OSHA Permissible Noise Exposure level is a limit in which it is believed that nearly all healthy workers may be repeatedly exposed without adverse health effects. 29

31 To: Brandon Blevins From: Jeremy Spalvieri On August 5, 2010, personal air monitoring was conducted during work operations. You were involved in this personal air monitoring and this memo is designed to notify you of the results. The results from monitoring are contained on the graph on the next page. As such, results are below the Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (PEL) and/or the American Conference of Governmental Industrial Hygienist (ACGIH) Threshold Limit Value (TLV). The OSHA PEL is the airborne concentration under which it is believed that nearly all healthy workers may be repeatedly exposed without adverse health effects. PELs are similar to the ACGIH TLVs. TLVs are used by industrial hygienists as guidelines or recommendations. The TLV is used when it is lower than the PEL. 30

32 10.0 BRANDON BLEVINS August 5, % LEL Hydrogen Sulfide-ppm TIME 31

33 To: Brian Stark From: Jeremy Spalvieri On August 5, 2010, personal air monitoring was conducted during work operations. You were involved in this personal air monitoring and this memo is designed to notify you of the results. The results from monitoring are contained on the graph on the next page. As such, results are below the Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (PEL) and/or the American Conference of Governmental Industrial Hygienist (ACGIH) Threshold Limit Value (TLV). The OSHA PEL is the airborne concentration under which it is believed that nearly all healthy workers may be repeatedly exposed without adverse health effects. PELs are similar to the ACGIH TLVs. TLVs are used by industrial hygienists as guidelines or recommendations. The TLV is used when it is lower than the PEL. 32

34 20.0 BRian stark August 5, :49 9:19 9:49 10:19 10:49 11:19 11:49 12:06 12:34 13:04 13:29 13:59 14:29 14:59 15:17 15:44 16:14 16:44 % LEL Hydrogen Sulfide-ppm TIME 33

35 To: Brian Stark From: Jeremy Spalvieri On August 5, 2010, personal air monitoring was conducted during work operations. You were involved in this personal air monitoring and this memo is designed to notify you of the results. The results from monitoring are contained in the table below. Employee Sample Duration (minutes) Analyte Sample Concentration TWA 8 hour OSHA PEL 8 hour ACGIH TLV 1 <xx.xx or BDL= Below Detectable Limits Brian Stark 500 Benzene < ppm 1 1 ppm 0.5 ppm Toluene <0.138 ppm 200 ppm 20 ppm Ethyl Benzene <0.275 ppm 100 ppm 100 ppm Xylene <0.367 ppm 100 ppm 100 ppm As such, results are below the Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (PEL) and/or the American Conference of Governmental Industrial Hygienist (ACGIH) Threshold Limit Value (TLV). The OSHA PEL is the airborne concentration under which it is believed that nearly all healthy workers may be repeatedly exposed without adverse health effects. PELs are similar to the ACGIH TLVs. TLVs are used by industrial hygienists as guidelines or recommendations. The TLV is used when it is lower than the PEL. 34

36 To: Michael Harvey From: Jeremy Spalvieri On August 5, 2010, personal air monitoring was conducted during work operations. You were involved in this personal air monitoring and this memo is designed to notify you of the results. The results from monitoring are contained in the table below. Employee Sample Duration (minutes) Analyte Sample Concentration TWA 8 hour OSHA PEL 8 hour ACGIH TLV 1 <xx.xx or BDL= Below Detectable Limits Michael Harvey 480 Benzene <0.551 ppm 1 1 ppm 0.5 ppm Toluene ppm 20 ppm Ethyl Benzene <0.264 ppm 100 ppm 100 ppm Xylene <0.352 ppm 100 ppm 100 ppm As such, results are below the Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (PEL) and/or the American Conference of Governmental Industrial Hygienist (ACGIH) Threshold Limit Value (TLV). The OSHA PEL is the airborne concentration under which it is believed that nearly all healthy workers may be repeatedly exposed without adverse health effects. PELs are similar to the ACGIH TLVs. TLVs are used by industrial hygienists as guidelines or recommendations. The TLV is used when it is lower than the PEL. 33

37 To: Patrick Foreman From: Jeremy Spalvieri On August 5, 2010, personal air monitoring was conducted during work operations. You were involved in this personal air monitoring and this memo is designed to notify you of the results. The results from monitoring are contained in the table below. Employee Sample Duration (minutes) Analyte Sample Concentration TWA 8 hour OSHA PEL 8 hour ACGIH TLV 1 <xx.xx or BDL= Below Detectable Limits Patrick Foreman 530 Benzene < ppm 1 1 ppm 0.5 ppm Toluene ppm 200 ppm 20 ppm Ethyl Benzene <0.239 ppm 100 ppm 100 ppm Xylene <0.318 ppm 100 ppm 100 ppm As such, results are below the Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (PEL) and/or the American Conference of Governmental Industrial Hygienist (ACGIH) Threshold Limit Value (TLV). The OSHA PEL is the airborne concentration under which it is believed that nearly all healthy workers may be repeatedly exposed without adverse health effects. PELs are similar to the ACGIH TLVs. TLVs are used by industrial hygienists as guidelines or recommendations. The TLV is used when it is lower than the PEL. 34