A Noise Dosimetry Study of Selected Military Trades at Cfb Greenwood and Cfb Halifax

A NOISE DOSIMETRY STUDY OF SELECTED MILITARY TRADES AT CFB GREENWOOD AND CFB HALIFAX

CONTRACTOR’S REPORT PWGSC Contract No. W7711-027843/001/TOR Report Number: DRDC Toronto No. CR 2004-014 ____

5 January 2004 ____

Disclaimer: The scientific or technical validity of this Contract Report is entirely the responsibility of the contractor and the contents do not necessarily have the approval or endorsement of Defence R&D Canada

Scientific Authority: Dr. Sharon M. Abel, Communications Group, DRDC Toronto, 1133 Sheppard Ave. W., Toronto M3M 3B9 (Telephone: 416-635-2037) ____

This document was compiled by contractor: G.W. Hearing Conservation and Civic Audiology Ltd. - HHHCCCCCCAAA LLLtttddd... Gordon Whitehead, B.S., M.A., Aud(C), Audiologist 210 Windsor Drive, Stillwater Lake, Nova Scotia B3Z 1G5 Telephone: 902-826-9528 / Facsimile: 902-826-9529

3.0

TABLE OF CONTENTS

4.0 ABSTRACT

5.0 EXECUTIVE SUMMARY

6.0 INTRODUCTION

7.0 RESEARCH INSTRUMENTATION

8.0 RESEARCH SUBJECT PROFILES

9.0 STATISTICAL DATA

10.0 GRAPHICAL PRESENTATION OF STATISTICAL DATA

11.0 RESEARCH VARIABLES

12.0 NOISE SURVEY RESULTS

13.0 CONCLUSIONS AND RECOMMENDATIONS

14.0 CURRICULUM VITAE OF CONTRACTOR

4.0

ABSTRACT

This project, “A Noise Dosimetry Study of Selected Military Trades at CFB Greenwood and CFB Halifax” is part of a larger study of risk factors being conducted by members of the Communications Group at DRDC Toronto. Dosimeters, individually worn sound level meters, were used for an entire workday by the 264 volunteer subjects who participated in the project. Twenty different trades were represented. An analysis of the data revealed that a significant number of volunteers were exposed to noise levels potentially capable of causing hearing damage.

5.0

EXECUTIVE SUMMARY

This paper, “A Noise Dosimetry Study of Selected Military Trades at CFB Greenwood and CFB Halifax” is part of a larger study of risk factors being conducted by members of the Communications Group at DRDC Toronto, entitled “A Study of Risk Factors for Noise-Induced Hearing Loss in Canadian Forces Personnel”. This component of the study was designed to determine the amount of noise exposure and the potential risk for resultant permanent hearing loss amongst members of selected Canadian Forces trades. It was conducted at Canadian Forces Base Greenwood, Greenwood, Nova Scotia, and Canadian Forces Base Halifax, Halifax, Nova Scotia.

A total of 264 research volunteer subjects on these two Canadian Forces Bases participated in the study by wearing personal dosimeters (individually worn sound level meters). These units measured the amount of sound experienced during an entire workday. 134 of the subjects were from CFB Greenwood, and 130 of the subjects were from CFB Halifax. These subjects represented 20 different work trades/MOCs (military occupational codes).

Many types of measurements were taken. Two important measures were the “LAVG” which is the average sound level experienced during the entire workday, and the “DOSE” which is the percentage of daily permissible noise to which a person has been exposed.

The trades with the highest general noise levels measured for this project include, in decreasing order: #331 Electrical Technician #861 Cook #277 Naval Communications #R315 Marine Engineering System Operator #514 Aviation Systems Technician #933 Traffic Technician #651 Fire Fighter #181 Bosn #226 Aerospace Telecommunication and Information Systems

Based on the results of this portion of the project, it can be concluded that almost all of the trades surveyed for this project have the potential of excessive exposure to intense noise, at some times for some individuals. Conversely, in the higher noise level trades, a few participants had noise exposures that were not considered to be hazardous to hearing.

Two of the most important recommendations include: 1. an expansion of this noise measurement project to include virtually all trades, even ones with limited numbers of employees, and 2. rapid intervention in the known high-noise trades/environments with an effective hearing conservation program, to minimize permanent hearing loss.

6.0

INTRODUCTION

The following documentation is a component of the study entitled “A Study of Risk Factors for Noise-Induced Hearing Loss in Canadian Forces Personnel”. This project was part of a larger study of risk factors being conducted by members of the Communications Group at DRDC Toronto.

The contractor compiling this specific report, Hearing Conservation and Civic Audiology Ltd. (HCCA Ltd.), was responsible for the data collection at Canadian Forces Base Greenwood, Greenwood, Nova Scotia, and Canadian Forces Base Halifax, Halifax, Nova Scotia. All data collection activities for this contractor were completed by Gordon Whitehead, B.S., M.A., Aud(C), Audiologist.

The data collection process utilized 12 Quest model Q-300 noise dosimeters, that were placed on a total of 264 volunteer subjects on two Canadian Forces Bases for their full workday. These subjects represented 20 different trades (MOCs). Exposure data statistics utilized 252 of the subjects, with 12 of the subjects’ data discarded due to instrumentation problems.

This process was designed to provide the researchers with accurate, scientifically- gathered documentation on the details of noise exposures that could be expected with workers involved in these trades.

The contractor report includes the following: Main report: This is the report of the overall findings/data generated by the noise measurements and noise survey. This volume contains no confidential subject information. Attachments: Attachments were compiled for each base. These attachments are confidential due to the inclusion of subject identifying data, and contain the following information for: CFB Greenwood: 1. subject names organized in alphabetical order; 2. subject list organized by trade (MOC); 3. subject list organized by date; 4. subject list organized by subject number; 5. volunteer consent forms for CFB Greenwood; 6. volunteer noise survey forms for CFB Greenwood. CFB Halifax: 1. subject names organized in alphabetical order; 2. subject list organized by trade (MOC); 3. subject list organized by date; 4. subject list organized by subject number; 5. volunteer consent forms for CFB Halifax; 6. volunteer noise survey forms for CFB Halifax. CFB Greenwood and CFB Halifax: Data printouts from the QuestSuite computer file summaries. 6.1

The following number of dosimeters were placed at CFB Greenwood by date: 14 July 2003: 11 subjects 15 July 2003: 9 subjects 16 July 2003: 11 subjects 17 July 2003: 12 subjects 18 July 2003: 10 subjects 21 July 2003: 9 subjects 22 July 2003: 2 subjects 23 July 2003: 12 subjects 24 July 2003: 9 subjects 28 July 2003: 10 subjects 29 July 2003: 12 subjects 30 July 2003: 12 subjects 31 July 2003: 12 subjects 1 August 2003: 3 subjects

The following number of dosimeters were placed at CFB Halifax by date: 2 September 2003: 5 subjects 3 September 2003: 8 subjects 4 September 2003: 11 subjects 5 September 2003: 10 subjects 8 September 2003: 11 subjects 9 September 2003: 7 subjects 10 September 2003: 11 subjects 11 September 2003: 9 subjects 12 September 2003: 11 subjects 15 September 2003: 11 subjects 16 September 2003: 8 subjects 17 September 2003: 10 subjects 18 September 2003: 11 subjects 19 September 2003: 7 subjects

For a brief review of the overall project findings, the reader is referred to section 10, Interpretation of Statistical Data and section 13, Conclusions and Recommendations.

This contractor would also like to express gratitude to Sgt Gary Rizzolo of CFB Greenwood, and PO Todd Krietz of CFB Halifax for their assistance and organizational efforts for this project, and to Dawn Whitehead for statistical assistance.

6.2

PROJECT DAILY ROUTINE

The general daily routine for the project, with the exception of any non-routine duties, was as follows:

1. 5:45 a.m.: turning each of 12 dosimeters on. 2. checking battery status of all 12 units. 3. removing windscreen from all 12 units. 4. checking calibration accuracy of all 12 units with calibrator. 5. replacing windscreen on all 12 units. 6. checking set-up values for all 3 programs on all 12 units. 7. ensuring that all previous data is erased. 8. turning off all 12 units. 9. packing dosimeters for transport to office. 10. transporting dosimeters to office. 11. turning all 12 dosimeters on. 12. organizing subject forms. 13. assisting research subjects fill in consent forms. 14. informing subjects on how to fill out noise survey forms during the day. 15. affixing the dosimeters on the research subjects. 16. on call for dosimeter problems during the work day. 17. collecting all dosimeters used at the end of the workday. 18. collecting the noise survey forms at the end of the workday. 19. downloading data from all dosimeters used, into the QuestSuite files; 10 units had to be downloaded manually due to computer interface complications. 20. assigning a QuestSuite .NDL file number and saving each to the database, for each unit used. 21. scanning each QuestSuite “events” graph, for each unit used, for entire day to look for discrepancies. 22. printing out the QuestSuite file summary for each dosimeter used. 23. checking battery status on each dosimeter used, with replacement as necessary. 24. removing windscreen from all 12 units. 25. re-checking calibration accuracy of all 12 dosimeters, for data reliability. 26. replacing windscreen on all 12 units. 27. erasing data from all 3 programs of all dosimeters used. 28. cleaning of case, cord and microphone of each dosimeter used (units often were returned with dust, debris, etc. on the outer surfaces). 29. organizing and reviewing paper data.

The purpose for checking the calibration of each unit used before measurements were taken, and after the completion of measurements, was to ensure reliability of data.

The purpose for checking the battery status of each unit used before measurements were taken, and after the completion of measurements, was to ensure reliability of data.

7.0

RESEARCH INSTRUMENTATION

This section describes the research instrumentation utilized in the project. Instrumentation and data include:

1. dosimeters and accessories

2. dosimeter standards

3. dosimeter unit numbers and serial numbers

4. calibrator and accessories

5. calibrator standards

6. record of instrumentation malfunction

7. noise dosimeter logging set-up values

7.1

RESEARCH INSTRUMENTATION

The sound exposure of the research subjects was measured using personal dosimeters, individual sound level meters that monitor noise exposure during the entire working day. The twelve units available to the contractor were: ● Quest model Q-300 Noise Dosimeters ● These units meet the following standards ● ANSI S1.25-1991 (American National Standards Institute) ● ANSI S1.4-1983: Type 2 ● IEC 651-1979 (International Electrotechnical Commission) ● IEC 804-1985: Type 2 ● IEC 1252-1993

● Dosimeter unit number yellow label/serial numbers ● unit #1 / serial #QC6020037 ● unit #2 / serial #QC6120075 ● unit #3 / serial #QC6120072 ● unit #4 / serial #QC6120074 ● unit #5 / serial #QC6120073 ● unit #6 / serial #QCA100144 ● unit #7 / serial #QCA100143 ● unit #8 / serial #QCA100140 ● unit #9 / serial #QCA100142 ● unit #10 / serial #QCA100139 ● unit #11 / serial #QCA100145 ● unit #12 / serial #QCA100141

● All units utilized the approved Quest foam microphone windshield

● Quest model QC-20 Calibrator ● serial #QF6010018 ● 250Hz and 1,000Hz calibration tones ● 94dBSPL and 114dBSPL calibration intensities ● This unit meets the following standards ● ANSI S1.40-1984 ● IEC 942: 1988, Class 1 ● MSHA: U.S. Department of Labor/Mine Safety and Health Administration approval #2G-3931-0. Tested for intrinsic safety in methane-air mixtures only.

● Model #056-989 microphone adaptor was utilized

7.2

The Quest model Q-300 noise dosimeter consists of 3 quasi-independent dosimeters built into a single case. The three logging parameter set-up values were as follows:

Dosimeter #1 Dosimeter #2 Dosimeter #3 Threshold 70dB 80dB 70dB Exchange Rate 3dB 5dB 3dB Upper Limit 87dB 120dB 140dB Criterion Level 87dB 90dB 85dB Response slow slow slow Weighting dBA dBA dBA

Dosimeter #1 is adjusted to reflect the Canada Occupation Health and Safety regulations. Dosimeter #2 is adjusted to reflect the Province of Ontario regulations. Dosimeter #3 is adjusted to reflect the Province of Nova Scotia regulations.

Logging parameter definitions: Threshold-A preset level in decibels below which sound is not accumulated or averaged into LAVG, LEQ, or Dose. Exchange Rate-The number of decibels that a sound must change to either halve or double the rate of dose accumulation. Upper Limit-A preset level in decibels above which no exposure should occur. Criterion Level-The constant sound level in decibels that, if applied for 8 hours, would accumulate a DOSE of 100%. Response-A measurement time constant, or averaging time. A “slow” response setting, of 1 second, is specified by Federal/Provincial governments in their noise legislation. Weighting-A description of the type of filtering used by a sound level meter/ dosimeter. “A” weighting is equivalent to measuring sound in the same manner in which the human ear hears low-intensity sound, and is the weighting specified by Federal/Provincial governments in their noise legislation.

7.3

RECORD OF INSTRUMENTATION MALFUNCTION

Although no recorded data was lost, the following malfunctions relating to downloading the dosimeters to the QuestSuite computer program are as follows:

17 July 2003: Dosimeter unit #01 would not download to computer, and required manual downloading. The associated file number is G65101.NDL.

23 July 2003: Dosimeter unit #01 would not download to computer, and required manual downloading. The associated file number is G51401.NDL.

28 July 2003: Dosimeter unit #05 would not download to computer, and required manual downloading. The associated file number is G3901.NDL.

28 July 2003: Dosimeter unit #09 would not download to computer, and required manual downloading. The associated file number is G3909.NDL.

29 July 2003: Dosimeter unit #01 would not download to computer, and required manual downloading. The associated file number is G83601.NDL.

30 July 2003: Dosimeter unit #01 would not download to computer, and required manual downloading. The associated file number is G93501.NDL.

31 July 2003: Dosimeter unit #01 would not download to computer, and required manual downloading. The associated file number is G64801.NDL.

8 September 2003: Dosimeter unit #11 would not download to computer, and required manual downloading. The associated file number is H64811.NDL.

8 September 2003: Dosimeter unit #10 would not download to computer, and required manual downloading. The associated file number is H64810.NDL.

15 September 2003: Dosimeter unit #06 would not download to computer, and required manual downloading. The associated file number is H73306.NDL.

7.4

There were only twelve instances where the dosimeters were utilized during the workday resulted in deletion of those files from the statistical analysis. A profile of those deletions follows.

Those twelve instances relate to subject file numbers: 16 / 61 / 131 / 132 / 133 / 134 / 162 / 173 / 206 / 219 / 261 / 262

Six of the deletions were at CFB Halifax, and six of the deletions were in CFB Greenwood Note: this suggests no significant Canadian Forces Base bias.

The deleted files represent the following trades: 226 (Greenwood) x1 file – Aerospace Telecommunications and Information Systems 648 (Halifax) x1 file – Construction Technician 651 (Greenwood) x1 file – Fire Fighter 651 (Halifax) x2 files – Fire Fighter 733 (Halifax) x1 file – Medical Assistant 836 (Greenwood) x3 files – Resources Management Support Clerk 861 (Greenwood) x1 file – Cook 921 (Halifax) x1 file – Ammunition Technician 935 (Halifax) x1 file – Mobile Support Equipment Operator Note: this suggests no significant trade (MOC) bias.

The dates of the deleted files were: 16 July x1 instance 17 July x1 instance 23 July x1 instance 29 July x1 instance 30 July x2 instances 5 Sept. x1 instance 8 Sept. x1 instance 11 Sept. x1 instance 15 Sept. x1 instance 19 Sept. x2 instances Note: this suggests no significant date bias.

7.5

The deleted files were measured on the following dosimeters: • Unit #1 x1 / Unit #3 x2 / Unit #4 x1 / Unit #8 x1 / Unit #9 x1 in CFB Greenwood, and • Unit #3 x1 / Unit #6 x2 / Unit #9 x1 / Unit #10 x1 / Unit #12 x1 in CFB Halifax Combined unit totals: Unit #1 x1 instance Unit #3 x3 instances (accumulated over 2 bases) Unit #4 x1 instance Unit #6 x2 instances Unit #8 x1 instance Unit #9 x2 instances (accumulated over 2 bases) Unit #10 x1 instance Unit #12 x1 instance Note: this suggests no significant dosimeter unit bias.

CAUSES FOR DATA DELETION: The causes of the dosimeter data deletion from the statistics are as follows: Unit #1: subject #16-microphone cable was loose, intermittent connection upon receipt Unit #3: subject #133- microphone cable was loose, intermittent connection upon receipt Unit #3: subject #219-readings excessively high for described activities (med. asst.) Unit #3: subject #132-battery fell out of case early in day, did not contact me Unit #4: subject #134- microphone cable was loose, intermittent connection upon receipt Unit #6: subject #173- microphone cable was loose, intermittent connection upon receipt Unit #6: subject #162- microphone cable was loose, intermittent connection upon receipt Unit #8: subject #61- microphone cable was loose, intermittent connection upon receipt Unit #9: subject #261- microphone cable was loose, intermittent connection upon receipt Unit #9: subject #131-was sent home from job after only 1 hour Unit #10: subject #262-microphone cable unplugged upon receipt of unit Unit #12: subject #206-microphone cable was loose, intermittent connection at receipt

Note: 9 of the 12 failures (possibly 13 failures with subject #219) suggest that this model dosimeter has a significant problem with the design of their microphone connector. The connector comes loose very easily, and can be dislodged by a relatively gentle upward push, as from clothing. Some subjects had to change clothing during the day, and it was demonstrated that the related handling of the dosimeter could release the microphone connection. It was also demonstrated that normal movement while wearing some uniforms (such as the flak jackets worn by military police, and protective fire clothing worn by firefighters) could dislodge the microphone. The manufacturer of the dosimeters needs to redesign the connector in order to provide a secure connection. This contractor was also able to artificially inject high-intensity peak readings on the dosimeters by disconnecting/connecting the cable.

8.0

RESEARCH SUBJECT PROFILES

The research subjects for the project were volunteers who were members of the Canadian Forces attached to CFB Greenwood and CFB Halifax. The volunteers comprised a cross- section of 20 different trades (MOCs) between the two bases. 7 of the trades were represented in both bases. A total of 264 volunteers wore the dosimeters during their working day; 134 from CFB Greenwood, and 130 from CFB Halifax. 12 of the volunteer dosimeter results, six from each base, were unable to be utilized in the statistics due to instrumentation and/or personnel complications; a total of 252 participant measurements were utilized statistically, 128 from CFB Greenwood and 124 from CFB Halifax.

MOC Title CFB CFB Total Greenwood Halifax 39 Aerospace Control 10 0 10 081 AESOP 11 0 11 181 Bosn 0 11 11 226 Aerospace TIS 11 0 11 277 Naval Communications 0 7 7 313 Marine Engineering Technician 0 8 8 R315 Mar. Engineering System Op. 0 5 5 331 Electrical Technician 0 11 11 411 Vehicle Technician 9 7 16 514 Aviation Systems Technician 12 0 12 648 Construction Technician 12 11 23 651 Fire Fighter 12 11 23 733 Medical Assistant 0 11 11 811 Military Police 7 10 17 836 Resources Manage. Sup. Clerk 12 8 20 861 Cook 9 0 9 911 Supply Technician 11 11 22 921 Ammunition Technician 0 9 9 933 Traffic Technician 12 0 12 935 Mobile Support Equipment Op. 12 10 22 Totals: All Trades (minus deletions) 128 124 252

The trades are as follows: 39 Aerospace Control – 10 participants from CFB Greenwood (This air traffic control trade is composed of the following amalgamated MOCs: 39, 39A, 39U, 161, 169, 170).

081 AESOP-Aircraft Electrical Sensor Operator – 11 participants from CFB Greenwood.

181 Bosn – 11 participants from CFB Halifax.

8.1

226 Aerospace Telecommunications and Information Systems – 11 participants (10 with 1 deleted) from CFB Greenwood.

277 Naval Communications – 7 participants from CFB Halifax.

313 Marine Engineering Technician (includes amalgamated MOC 312) – 8 participants from CFB Halifax.

R315 MESO-Marine Engineering System Operator – 5 participants from CFB Halifax.

331 Electrical Technician – 11 participants from CFB Halifax.

411 Vehicle Technician – 16 participants; 9 from CFB Greenwood and 7 from CFB Halifax.

514 Aviation Systems Technician – 12 participants from CFB Greenwood.

648 Construction Technician – 22 participants; 12 from CFB Greenwood and 11 (10 with one deleted) from CFB Halifax.

651 Fire Fighter – 23 participants; 12 (11 with one deleted) from CFB Greenwood and 11 (10 with 2 deleted) from CFB Halifax.

733 Medical Assistant – 11 participants (10 with 1 deleted) from CFB Halifax.

811 Military Police – 17 participants; 7 from CFB Greenwood and 10 from CFB Halifax.

836 Resources Management Support Clerk – 20 participants; 12 (9 with 3 deleted) from CFB Greenwood and 8 from CFB Halifax.

861 Cook – 9 participants (8 with 1 deleted) from CFB Greenwood.

911 Supply Technician – 22 participants; 11 from CFB Greenwood and 11 from CFB Halifax.

921 Ammunition Technician – 9 participants (8 with 1 deleted) from CFB Halifax.

933 Traffic Technician – 12 participants from CFB Greenwood.

935 Mobile Support Equipment Operator – 21 participants; 12 from CFB Greenwood and 10 (9 with 1 deleted) from CFB Halifax.

Further indepth analysis of the research subject profiles can be noted in section 9, Statistical Analysis. 9.0

STATISTICAL ANALYSIS

This section provides a statistical analysis of the research population base and trade (MOC) base. A portion of the section presents subject characteristics and actual measured values in the form of the LAVG (the actual average level measured over the participants actual working day) and the DOSE (the actual percentage of allowable noise exposure the participants had during the actual working day). Additional information relating to projected values such as TWA and PDOSE (measures which are calculated over a specific time period), and statistical measures (medians, standard deviations, etc.), is provided in tabular and graphical form. Subject specific information includes: •Total research population •Total female population •Total male population •Total subjects with results deleted due to equipment/personnel complications

•Average age for trade •Average age for females in trade •Average age for males in trade

•Average number of years in service •Average number of female years in service •Average number of male years in service

•Ranks of female subjects: •Ranks of male subjects:

•Total right handedness •Total left handedness •Total of ambidextrous subjects •Total female right handedness •Total female left handedness •Total female ambidextrous subjects •Total male right handedness •Total male left handedness •Total male ambidextrous subjects

•Total number reporting subjective loud sound exposure during break periods

•Number of subjects reporting weapons use

•Total number of subjects reporting time spent in field over past six months •Average amount of time spent (%) in field over past six months •Number of female subjects reporting time spent in field over past six months •Average amount of time spent (%) in field by females over past six months •Number of male subjects reporting time spent in field over past six months •Average amount of time spent (%) in field by males over past six months

9.1

•Total number exposed to excessive noise according to dosimetry •Total female subjects exposed to excessive noise according to dosimetry •Total male subjects exposed to excessive noise according to dosimetry

(“Excessive noise”, above, refers to noise intensity levels which exceed the threshold limit values of the applicable governmental jurisdiction, and/or 100% DOSE limit).

Page 9.2 provides an overview of the total research population.

Page 9.3 provides an overview of the total CFB Greenwood research population.

Page 9.4 provides an overview of the total CFB Halifax research population.

Pages 9.5 to the end of this section provide an overview of the total research population by trade (MOC). Each trade (MOC) is represented in total, and if it is represented on both Canadian Forces Bases, the individual Base totals are also shown.

Definitions of noise measurements: LAVG-The average sound level, in decibels, for the measurement period, based on a 3, 4, 5, or 6dB exchange rate. If the exchange rate is 3dB, LAVG is then termed LEQ. This is a sound equivalent level, that is, the LAVG value, if constant over the measurement period, would equal the amount of sound the subject actually heard, with its intensity fluctuations, over that same time period. DOSE-The actual percentage of the 24-hour daily maximum allowable noise to which a person has been exposed. The maximum allowed is 100%. PDOSE-The computed percentage of the 24-hour daily maximum allowable noise to which a person has been exposed for a given time period, then extrapolated to a different time period. For example, if a person has worked for 4 hours ( ½ workday), the PDOSE could predict the exposure for an entire 8-hour workday. TWA-The time weighted average is the average sound level in decibels accumulated over any given time period, but with the average level computed over an 8-hour time period. PEAK-the highest instantaneous sound pressure, expressed in unweighted sound pressure level (SPL), that occurs during a given time period. SLOW MINIMUM-The lowest sound pressure level, in decibels, that occurs during a given time period, with the meter adjusted to an averaging time of 1 second. SLOW MINIMUM-The lowest sound pressure level, in decibels, that occurs during a given time period, with a meter averaging time of 1 second. SLOW MAXIMUM-The highest sound pressure level, in decibels, that occurs during a given time period, with a meter averaging time of 1 second.

9.2

STATISTICAL ANALYSIS OF TOTAL CFB SUBJECTS - ALL TRADES ON BOTH BASES

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 83.3dBA 72.6dBA 83.3dBA DOSE (allowable %) 890.0% 38.6% 561.6%

264 Total research population 40 Total female population 224 Total male population 12 Total subjects with results deleted due to equipment/personnel complications

34.1 Average age for all 33.6 Average age for females 33.8 Average age for males

11.6 Average number of years in service 9.5 Average number of female years in service 12.2 Average number of male years in service

Ranks of female subjects: MCPLx7 CPLx9 PTEx7 LSx6 MSx2 OSx1 PO2x1 SGTx1 ABx2 Ranks of male subjects: MCPLx32 CPLx95 PTEx28 LSx20 MSx8 OSx12 PO2x3 SGTx10 PO1x2 WOx2 2LTx2

190 Total right handedness 39 Total left handedness 3 Total of ambidextrous subjects 28 Total female right handedness 3 Total female left handedness 1 Total female ambidextrous subjects 162 Total male right handedness 32 Total male left handedness 2 Total male ambidextrous subjects

63 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

44 Total number of subjects reporting time spent in field over past six months 26.8% Average amount of time spent by those subjects in field over past six months 2 Number of female subjects reporting time spent in field over past six months 2.9% Average amount of time spent in field by those females over past six months 42 Number of male subjects reporting time spent in field over past six months 26.8% Average amount of time spent in field by those males over past six months

80 Total number exposed to excessive noise according to dosimetry 3 Total female subjects exposed to excessive noise according to dosimetry 77 Total male subjects exposed to excessive noise according to dosimetry

9.2b

ALL TRADES ON BOTH BASES

Statistical Data – Lavg and Dose

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.3

STATISTICAL ANALYSIS OF ALL TRADES ON CFB GREENWOOD

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 84.3dBA 74.1dBA 84.3dBA DOSE (allowable %) 1215% 55% 767%

134 Total research population 21 Total female population 113 Total male population 6 Total subjects with results deleted due to equipment/personnel complications

35.5 Average age for all 35.4 Average age for females 34.9 Average age for males

12.3 Average number of years in service 8.9 Average number of female years in service 13.5 Average number of male years in service

Ranks of female subjects: MCPLx6 CPLx7 PTEx4 OSx1 Ranks of male subjects: MCPLx20 CPLx58 PTEx18 SGTx4 MSx2 WOx2 2LTx2

93 Total right handedness 15 Total left handedness 2 Total of ambidextrous subjects 14 Total female right handedness 3 Total female left handedness 1 Total female ambidextrous subjects 79 Total male right handedness 12 Total male left handedness 1 Total male ambidextrous subjects

31 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

24 Total number of subjects reporting time spent in field over past six months 23.6% Average amount of time spent by those subjects in field over past six months 1 Number of female subjects reporting time spent in field over past six months 2.0% Average amount of time spent in field by those females over past six months 23 Number of male subjects reporting time spent in field over past six months 23.4% Average amount of time spent in field by those males over past six months

44 Total number exposed to excessive noise according to dosimetry 2 Total female subjects exposed to excessive noise according to dosimetry 42 Total male subjects exposed to excessive noise according to dosimetry

9.4

STATISTICAL ANALYSIS OF ALL TRADES ON CFB HALIFAX

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 82.3dBA 71.6dBA 82.3dBA DOSE (allowable %) 405% 22% 256 %

130 Total research population 19 Total female population 111 Total male population 6 Total subjects with results deleted due to equipment/personnel complications

32.6 Average age for all 31.5 Average age for females 32.8 Average age for males

10.8 Average number of years in service 10.1 Average number of female years in service 10.8 Average number of male years in service

Ranks of female subjects: MCPLx1 CPLx2 PTEx3 LSx6 MSx2 OSx1 PO2x1 SGTx1 ABx2 Ranks of male subjects: MCPLx12 CPLx37 PTEx10 LSx20 MSx6 OSx12 PO1x2 PO2x3 SGTx6

97 Total right handedness 24 Total left handedness 1 Total of ambidextrous subjects 14 Total female right handedness 4 Total female left handedness 0 Total female ambidextrous subjects 83 Total male right handedness 20 Total male left handedness 1 Total male ambidextrous subjects

32 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

20 Total number of subjects reporting time spent in field over past six months 30.7% Average amount of time spent by those subjects in field over past six months 1 Number of female subjects reporting time spent in field over past six months 3.8% Average amount of time spent in field by those females over past six months 19 Number of male subjects reporting time spent in field over past six months 30.9% Average amount of time spent in field by those males over past six months

36 Total number exposed to excessive noise according to dosimetry 1 Total female subjects exposed to excessive noise according to dosimetry 35 Total male subjects exposed to excessive noise according to dosimetry

9.5

STATISTICAL ANALYSIS OF CFB GREENWOOD SUBJECTS: MOC #39 – AEROSPACE CONTROL

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 81.9dBA 70.0dBA 81.9dBA DOSE (allowable %) 1861% 65.7% 1174%

10 Total research population 3 Total female population 7 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

32.6 Average age for trade 29.3 Average age for females in trade 34.0 Average age for males in trade

12.2 Average number of years in service 6.8 Average number of female years in service 14.5 Average number of male years in service

Ranks of female subjects: CPLx2 PTEx1 Ranks of male subjects: MCPLx2 PTEx1 Captx2 2LTx2

7 Total right handedness 2 Total left handedness 1 Total of ambidextrous subjects 2 Total female right handedness 0 Total female left handedness 1 Total female ambidextrous subjects 5 Total male right handedness 2 Total male left handedness 0 Total male ambidextrous subjects

2 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

1 Total number of subjects reporting time spent in field over past six months 50% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 1 Number of male subjects reporting time spent in field over past six months 50% Average amount of time spent in field by those males over past six months

3 Total number exposed to excessive noise according to dosimetry 0 Total female subjects exposed to excessive noise according to dosimetry 3 Total male subjects exposed to excessive noise according to dosimetry

9.5b

MOC #39 – AEROSPACE CONTROL

Population Base Data

Statistical Data – Lavg and Dose

9.5c

MOC #39 – AEROSPACE CONTROL, continued

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.6

STATISTICAL ANALYSIS OF CFB GREENWOOD SUBJECTS: MOC #081 – AESOP/AIRCRAFT ELECTRICAL SENSOR OPERATOR

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 84.2dBA 73.8dBA 84.2dBA DOSE (allowable %) 3345.6 % 112.7% 2110.9%

5 Total research population 1 Total female population 4 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

39.8 Average age for trade 44.0 Average age for females in trade 38.8 Average age for males in trade

18.7 Average number of years in service 19.5 Average number of female years in service 18.5 Average number of male years in service

Ranks of female subjects: MCPLx1 Ranks of male subjects: MCPLx2 WOx1 SGTx1

5 Total right handedness 0 Total left handedness 0 Total of ambidextrous subjects 1 Total female right handedness 0 Total female left handedness 0 Total female ambidextrous subjects 4 Total male right handedness 0 Total male left handedness 0 Total male ambidextrous subjects

1 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

0 Total number of subjects reporting time spent in field over past six months 0% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 0 Number of male subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those males over past six months

1 Total number exposed to excessive noise according to dosimetry 0 Total female subjects exposed to excessive noise according to dosimetry 1 Total male subjects exposed to excessive noise according to dosimetry

9.6b

MOC #081 – AESOP/AIRCRAFT ELECTRICAL SENSOR OPERATOR

Population Base Data

Statistical Data – Lavg and Dose

9.6c

MOC #081 – AESOP/AIRCRAFT ELECTRICAL SENSOR OPERATOR, continued

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.7

STATISTICAL ANALYSIS OF CFB HALIFAX SUBJECTS: MOC #181 – BOSN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 85.6dBA 78.0dBA 85.6dBA DOSE (allowable %) 295.1 % 25.1% 186.2%

11 Total research population 0 Total female population 11 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

35.2 Average age for trade - Average age for females in trade 35.2 Average age for males in trade

12.5 Average number of years in service - Average number of female years in service 12.5 Average number of male years in service

Ranks of female subjects: - Ranks of male subjects: LSx6 MSx1 OSx3 PO2x1

5 Total right handedness 4 Total left handedness 1 Total of ambidextrous subjects - Total female right handedness - Total female left handedness - Total female ambidextrous subjects 5 Total male right handedness 4 Total male left handedness 1 Total male ambidextrous subjects

2 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

5 Total number exposed to excessive noise according to dosimetry - Total female subjects exposed to excessive noise according to dosimetry 5 Total male subjects exposed to excessive noise according to dosimetry

9.7b

MOC #181 – BOSN

Population Base Data

Statistical Data – Lavg and Dose

9.7c

MOC #181 – BOSN, continued

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.8

STATISTICAL ANALYSIS OF CFB GREENWOOD SUBJECTS: MOC #226 – AEROSPACE TELECOMMUNICATIONS AND INFORMATION SYSTEMS

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 85.5dBA 75.8dBA 85.5dBA DOSE (allowable %) 1091.3% 52.2% 688.5 %

11 Total research population 0 Total female population 11 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

32.9 Average age for trade - Average age for females in trade 32.9 Average age for males in trade

12.1 Average number of years in service - Average number of female years in service 12.1 Average number of male years in service

Ranks of female subjects: - Ranks of male subjects: MCPLx3 CPLx8

9 Total right handedness 2 Total left handedness 0 Total of ambidextrous subjects - Total female right handedness - Total female left handedness - Total female ambidextrous subjects 9 Total male right handedness 2 Total male left handedness 0 Total male ambidextrous subjects

5 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

4 Total number of subjects reporting time spent in field over past six months 11.0% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 4 Number of male subjects reporting time spent in field over past six months 11.0% Average amount of time spent in field by those males over past six months

4 Total number exposed to excessive noise according to dosimetry 0 Total female subjects exposed to excessive noise according to dosimetry 4 Total male subjects exposed to excessive noise according to dosimetry

9.8b

MOC #226 – AEROSPACE TELECOMMUNICATIONS AND INFORMATION SYSTEMS

Population Base Data

Statistical Data – Lavg and Dose

9.8c

MOC #226 – AEROSPACE TELECOMMUNICATIONS AND INFORMATION SYSTEMS, continued

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.9

STATISTICAL ANALYSIS OF CFB HALIFAX SUBJECTS: MOC #277 – NAVAL COMMUNICATIONS

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 90.4dBA 80.6dBA 90.4dBA DOSE (allowable %) 879.0 % 44.3 % 554.6%

7 Total research population 3 Total female population 4 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

27.7 Average age for trade 28.7 Average age for females in trade 27.0 Average age for males in trade

6.3 Average number of years in service 7.7 Average number of female years in service 5.3 Average number of male years in service

Ranks of female subjects: LSx2 ABx1 Ranks of male subjects: LSx1 MSx1 OSx2

6 Total right handedness 1 Total left handedness 0 Total of ambidextrous subjects 3 Total female right handedness 0 Total female left handedness 0 Total female ambidextrous subjects 3 Total male right handedness 1 Total male left handedness 0 Total male ambidextrous subjects

4 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

4 Total number exposed to excessive noise according to dosimetry 1 Total female subjects exposed to excessive noise according to dosimetry 3 Total male subjects exposed to excessive noise according to dosimetry

9.9b

MOC #277 – NAVAL COMMUNICATIONS

Population Base Data

Statistical Data – Lavg and Dose

9.9c

MOC #277 – NAVAL COMMUNICATIONS, continued

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.10

STATISTICAL ANALYSIS OF CFB HALIFAX SUBJECTS: MOC #313 – MARINE ENGINEERING TECHNICIAN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 83.8dBA 74.0dBA 83.8dBA DOSE (allowable %) 103.3 % 11.9% 65.2%

8 Total research population 0 Total female population 8 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

31.9 Average age for trade - Average age for females in trade 31.9 Average age for males in trade

12.3 Average number of years in service - Average number of female years in service 12.3 Average number of male years in service

Ranks of female subjects: - Ranks of male subjects: LSx7 OSx1

6 Total right handedness 2 Total left handedness 0 Total of ambidextrous subjects - Total female right handedness - Total female left handedness - Total female ambidextrous subjects 6 Total male right handedness 2 Total male left handedness 0 Total male ambidextrous subjects

4 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

2 Total number of subjects reporting time spent in field over past six months 37.5% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 2 Number of male subjects reporting time spent in field over past six months 37.5% Average amount of time spent in field by those males over past six months

2 Total number exposed to excessive noise according to dosimetry - Total female subjects exposed to excessive noise according to dosimetry 2 Total male subjects exposed to excessive noise according to dosimetry

9.10b

MOC #313 – MARINE ENGINEERING TECHNICIAN

Population Base Data

Statistical Data – Lavg and Dose

9.10c

MOC #313 – MARINE ENGINEERING TECHNICIAN, continued

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.11

STATISTICAL ANALYSIS OF CFB HALIFAX SUBJECTS: MOC #315 – MESO/MARINE ENGINEERING SYSTEM OPERATOR

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 86.2dBA 78.7dBA 86.2dBA DOSE (allowable %) 297.4% 25.2% 187.7%

5 Total research population 1 Total female population 4 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

31 Average age for trade 19 Average age for females in trade 34 Average age for males in trade

12.3 Average number of years in service - Average number of female years in service 12.3 Average number of male years in service

Ranks of female subjects: ABx1 Ranks of male subjects: LSx1 MSx1 PO1x1 PO2x1

1 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

9.11b

MOC #315 – MESO/MARINE ENGINEERING SYSTEM OPERATOR

Population Base Data

Statistical Data – Lavg and Dose

9.11c

MOC #315 – MESO/MARINE ENGINEERING SYSTEM OPERATOR, continued

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.12

STATISTICAL ANALYSIS OF CFB HALIFAX SUBJECTS: MOC #331 – ELECTRICAL TECHNICIAN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 90.9dBA 82.1dBA 90.9dBA DOSE (allowable %) 1898.1% 73.5% 1197.5 %

11 Total research population 1 Total female population 10 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

32.0 Average age for trade 23.0 Average age for females in trade 32.5 Average age for males in trade

10.3 Average number of years in service 5.0 Average number of female years in service 11.0 Average number of male years in service

Ranks of female subjects: LSx1 Ranks of male subjects: LSx3 MSx2 OSx3 PO1x1 PO2x1

8 Total right handedness 1 Total left handedness 0 Total of ambidextrous subjects 1 Total female right handedness 0 Total female left handedness 0 Total female ambidextrous subjects 7 Total male right handedness 1 Total male left handedness 0 Total male ambidextrous subjects

2 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

6 Total number exposed to excessive noise according to dosimetry 0 Total female subjects exposed to excessive noise according to dosimetry 6 Total male subjects exposed to excessive noise according to dosimetry

9.12b

MOC #331 – ELECTRICAL TECHNICIAN

Population Base Data

Statistical Data – Lavg and Dose

9.12c

MOC #331 – ELECTRICAL TECHNICIAN, continued

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.13

STATISTICAL ANALYSIS OF CFB GREENWOOD AND HALIFAX SUBJECTS: MOC #411 – VEHICLE TECHNICIAN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 83.1dBA 73.7dBA 83.1dBA DOSE (allowable %) 263.3% 19.9% 166.1%

16 Total research population 1 Total female population 15 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

34.4 Average age for trade 32.0 Average age for females in trade 34.6 Average age for males in trade

13.4 Average number of years in service 4.5 Average number of female years in service 14.1 Average number of male years in service

Ranks of female subjects: CPLx1 Ranks of male subjects: MCPLx4 CPLx7 SGTx1 MSx1 PTEx2

12 Total right handedness 2 Total left handedness 0 Total of ambidextrous subjects 0 Total female right handedness 1 Total female left handedness 0 Total female ambidextrous subjects 12 Total male right handedness 1 Total male left handedness 0 Total male ambidextrous subjects

6 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

3 Total number of subjects reporting time spent in field over past six months 4.8% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 3 Number of male subjects reporting time spent in field over past six months 4.8% Average amount of time spent in field by those males over past six months

9.13b

MOC #411 – VEHICLE TECHNICIAN

Population Base Data

Statistical Data – Lavg and Dose

9.13c

MOC #411 – VEHICLE TECHNICIAN, continued

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.14

STATISTICAL ANALYSIS OF CFB GREENWOOD SUBJECTS: MOC #411 – VEHICLE TECHNICIAN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 84.3dBA 74.7dBA 84.3dBA DOSE (allowable %) 425% 28% 268%

9 Total research population 1 Total female population 8 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

36.1 Average age for trade 32.0 Average age for females in trade 36.6 Average age for males in trade

13.6 Average number of years in service 4.5 Average number of female years in service 14.9 Average number of male years in service

Ranks of female subjects: CPLx1 Ranks of male subjects: CPLx5 MCPLx2 PTEx1

6 Total right handedness 1 Total left handedness 0 Total of ambidextrous subjects 0 Total female right handedness 1 Total female left handedness 0 Total female ambidextrous subjects 6 Total male right handedness 0 Total male left handedness 0 Total male ambidextrous subjects

4 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

2 Total number of subjects reporting time spent in field over past six months 4.4% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 2 Number of male subjects reporting time spent in field over past six months 4.4% Average amount of time spent in field by those males over past six months

9.15

STATISTICAL ANALYSIS OF CFB HALIFAX SUBJECTS: MOC #411 – VEHICLE TECHNICIAN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 81.5dBA 72.4dBA 81.5dBA DOSE (allowable %) 55% 10% 35%

7 Total research population 0 Total female population 7 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

32.3 Average age for trade - Average age for females in trade 32.3 Average age for males in trade

13.2 Average number of years in service - Average number of female years in service 13.2 Average number of male years in service

Ranks of female subjects: - Ranks of male subjects: MCPLx2 CPLx2 SGTx1 MSx1 PTEx1

6 Total right handedness 1 Total left handedness 0 Total of ambidextrous subjects - Total female right handedness - Total female left handedness - Total female ambidextrous subjects 6 Total male right handedness 1 Total male left handedness 0 Total male ambidextrous subjects

2 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

1 Total number of subjects reporting time spent in field over past six months 10% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 1 Number of male subjects reporting time spent in field over past six months 10% Average amount of time spent in field by those males over past six months

9.16

STATISTICAL ANALYSIS OF CFB GREENWOOD SUBJECTS: MOC #514 – AVIATION SYSTEMS TECHNICIAN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 86.2dBA 76.9dBA 86.2dBA DOSE (allowable %) 2393.0% 91.6% 1509.9%

12 Total research population 0 Total female population 12 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

35.9 Average age for trade - Average age for females in trade 35.9 Average age for males in trade

14.6 Average number of years in service - Average number of female years in service 14.6 Average number of male years in service

Ranks of female subjects: - Ranks of male subjects: MCPLx2 CPLx10

11 Total right handedness 0 Total left handedness 1 Total of ambidextrous subjects - Total female right handedness - Total female left handedness - Total female ambidextrous subjects 11 Total male right handedness 0 Total male left handedness 1 Total male ambidextrous subjects

1 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

3 Total number of subjects reporting time spent in field over past six months 30.1% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 3 Number of male subjects reporting time spent in field over past six months 30.1% Average amount of time spent in field by those males over past six months

6 Total number exposed to excessive noise according to dosimetry - Total female subjects exposed to excessive noise according to dosimetry 6 Total male subjects exposed to excessive noise according to dosimetry

9.16b

MOC #514 – AVIATION SYSTEMS TECHNICIAN

Population Base Data

Statistical Data – Lavg and Dose

9.16c

MOC #514 – AVIATION SYSTEMS TECHNICIAN, continued

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.17

STATISTICAL ANALYSIS OF CFB GREENWOOD AND HALIFAX SUBJECTS: MOC #648 – CONSTRUCTION TECHNICIAN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 83.8dBA 71.8dBA 83.8dBA DOSE (allowable %) 311.2 % 21.7% 196.4%

23 Total research population 1 Total female population 22 Total male population 1 Total subjects with results deleted due to equipment/personnel complications

34.4 Average age for trade 43.0 Average age for females in trade 33.9 Average age for males in trade

9.3 Average number of years in service 4.0 Average number of female years in service 9.6 Average number of male years in service

Ranks of female subjects: CPLx1 Ranks of male subjects: MCPLx4 CPLx16 PTEx2

19 Total right handedness 4 Total left handedness 0 Total of ambidextrous subjects 1 Total female right handedness 0 Total female left handedness 0 Total female ambidextrous subjects 18 Total male right handedness 4 Total male left handedness 0 Total male ambidextrous subjects

5 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

2 Total number of subjects reporting time spent in field over past six months 7.9% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 2 Number of male subjects reporting time spent in field over past six months 7.9% Average amount of time spent in field by those males over past six months

8 Total number exposed to excessive noise according to dosimetry 0 Total female subjects exposed to excessive noise according to dosimetry 8 Total male subjects exposed to excessive noise according to dosimetry

9.17b

MOC #648 – CONSTRUCTION TECHNICIAN

Population Base Data

9.17c

MOC #648 – CONSTRUCTION TECHNICIAN, continued

Statistical Data – Lavg and Dose

9.17d

MOC #648 – CONSTRUCTION TECHNICIAN, continued

Statistical Data – TWA and P8Dose

9.17e

MOC #648 – CONSTRUCTION TECHNICIAN, continued

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.18

STATISTICAL ANALYSIS OF CFB GREENWOOD SUBJECTS: MOC #648 – CONSTRUCTION TECHNICIAN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 84.0dBA 75.1dBA 84.0dBA DOSE (allowable %) 117% 16% 74%

12 Total research population 1 Total female population 11 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

36.3 Average age for trade 43.0 Average age for females in trade 35.6 Average age for males in trade

8.3 Average number of years in service 4.0 Average number of female years in service 8.7 Average number of male years in service

Ranks of female subjects: CPLx1 Ranks of male subjects: MCPLx3 CPLx7 PTEx1

12 Total right handedness 0 Total left handedness 0 Total of ambidextrous subjects 1 Total female right handedness 0 Total female left handedness 0 Total female ambidextrous subjects 11 Total male right handedness 0 Total male left handedness 0 Total male ambidextrous subjects

1 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

1 Total number of subjects reporting time spent in field over past six months 8.0% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 1 Number of male subjects reporting time spent in field over past six months 8.0% Average amount of time spent in field by those males over past six months

9.19

STATISTICAL ANALYSIS OF CFB HALIFAX SUBJECTS: MOC #648 – CONSTRUCTION TECHNICIAN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 83.7dBA 75.4dBA 83.7dBA DOSE (allowable %) 604% 32% 381%

11 Total research population 0 Total female population 11 Total male population 1 Total subjects with results deleted due to equipment/personnel complications

32.1 Average age for trade - Average age for females in trade 32.1 Average age for males in trade

10.4 Average number of years in service - Average number of female years in service 10.4 Average number of male years in service

Ranks of female subjects: - Ranks of male subjects: MCPLx1 CPLx9 PTEx1

7 Total right handedness 4 Total left handedness 0 Total of ambidextrous subjects - Total female right handedness - Total female left handedness - Total female ambidextrous subjects 7 Total male right handedness 4 Total male left handedness 0 Total male ambidextrous subjects

4 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

1 Total number of subjects reporting time spent in field over past six months 7.7% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 1 Number of male subjects reporting time spent in field over past six months 7.7% Average amount of time spent in field by those males over past six months

9.20

STATISTICAL ANALYSIS OF CFB GREENWOOD AND HALIFAX SUBJECTS: MOC #651 – FIRE FIGHTER

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 85.8dBA 75.3dBA 85.8dBA DOSE (allowable %) 2149.7 % 68.9 % 1356.4%

23 Total research population 0 Total female population 23 Total male population 3 Total subjects with results deleted due to equipment/personnel complications

33.5 Average age for trade - Average age for females in trade 33.5 Average age for males in trade

12.4 Average number of years in service - Average number of female years in service 12.4 Average number of male years in service

Ranks of female subjects: - Ranks of male subjects: MCPLx3 CPLx9 SGTx3 PTEx7 WOx1

18 Total right handedness 2 Total left handedness 0 Total of ambidextrous subjects - Total female right handedness - Total female left handedness - Total female ambidextrous subjects 18 Total male right handedness 2 Total male left handedness 0 Total male ambidextrous subjects

9 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

3 Total number of subjects reporting time spent in field over past six months 42.9% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 3 Number of male subjects reporting time spent in field over past six months 42.9% Average amount of time spent in field by those males over past six months

9 Total number exposed to excessive noise according to dosimetry - Total female subjects exposed to excessive noise according to dosimetry 9 Total male subjects exposed to excessive noise according to dosimetry

9.20b

MOC #651 – FIRE FIGHTER

Population Base Data

9.20c

MOC #651 – FIRE FIGHTER, continued

Statistical Data – Lavg and Dose

9.20d

MOC #651 – FIRE FIGHTER, continued

Statistical Data – TWA and P8Dose

9.20e

MOC #651 – FIRE FIGHTER, continued

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.21

STATISTICAL ANALYSIS OF CFB GREENWOOD SUBJECTS: MOC #651 – FIRE FIGHTER

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 88.9dBA 77.7dBA 88.9dBA DOSE (allowable %) 3640% 108% 2297%

12 Total research population 0 Total female population 12 Total male population 1 Total subjects with results deleted due to equipment/personnel complications

33.5 Average age for trade - Average age for females in trade 33.5 Average age for males in trade

12.8 Average number of years in service - Average number of female years in service 12.8 Average number of male years in service

Ranks of female subjects: - Ranks of male subjects: MCPLx2 CPLx4 SGTx1 PTEx4 WOx1

10 Total right handedness 1 Total left handedness 0 Total of ambidextrous subjects - Total female right handedness - Total female left handedness - Total female ambidextrous subjects 10 Total male right handedness 1 Total male left handedness 0 Total male ambidextrous subjects

4 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

7 Total number exposed to excessive noise according to dosimetry - Total female subjects exposed to excessive noise according to dosimetry 7 Total male subjects exposed to excessive noise according to dosimetry

9.22

STATISTICAL ANALYSIS OF CFB HALIFAX SUBJECTS: MOC #651 – FIRE FIGHTER

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 82.0dBA 72.2dBA 82.0dBA DOSE (allowable %) 328% 20% 207%

11 Total research population 0 Total female population 11 Total male population 2 Total subjects with results deleted due to equipment/personnel complications

33.5 Average age for trade - Average age for females in trade 33.5 Average age for males in trade

12.0 Average number of years in service - Average number of female years in service 12.0 Average number of male years in service

Ranks of female subjects: - Ranks of male subjects: MCPLx1 CPLx5 SGTx2 PTEx3

8 Total right handedness 1 Total left handedness 0 Total of ambidextrous subjects - Total female right handedness - Total female left handedness - Total female ambidextrous subjects 8 Total male right handedness 1 Total male left handedness 0 Total male ambidextrous subjects

5 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

2 Total number of subjects reporting time spent in field over past six months 39.4% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 2 Number of male subjects reporting time spent in field over past six months 39.4% Average amount of time spent in field by those males over past six months

9.23

STATISTICAL ANALYSIS OF CFB HALIFAX SUBJECTS: MOC #733 – MEDICAL ASSISTANT

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 72.2dBA 55.6dBA 72.2dBA DOSE (allowable %) 6.7% 1.2% 4.3%

11 Total research population 3 Total female population 8 Total male population 1 Total subjects with results deleted due to equipment/personnel complications

34.9 Average age for trade 34.0 Average age for females in trade 35.3 Average age for males in trade

11.3 Average number of years in service 6.3 Average number of female years in service 12.7 Average number of male years in service

Ranks of female subjects: MCPLx1 SGTx1 PTEx1 Ranks of male subjects: MCPLx3 PO2x1 LSx1 PTEx3

9 Total right handedness 1 Total left handedness 0 Total of ambidextrous subjects 3 Total female right handedness 0 Total female left handedness 0 Total female ambidextrous subjects 6 Total male right handedness 1 Total male left handedness 0 Total male ambidextrous subjects

1 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

0 Total number exposed to excessive noise according to dosimetry 0 Total female subjects exposed to excessive noise according to dosimetry 0 Total male subjects exposed to excessive noise according to dosimetry

9.23b

MOC #733 – MEDICAL ASSISTANT

Population Base Data

Statistical Data – Lavg and Dose

9.23c

MOC #733 – MEDICAL ASSISTANT, continued

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.24

STATISTICAL ANALYSIS OF CFB GREENWOOD AND HALIFAX SUBJECTS: MOC #811 – MILITARY POLICE Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 81.6dBA 70.2dBA 81.6dBA DOSE (allowable %) 370.8% 18.9% 234.0%

17 Total research population 1 Total female population 16 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

33.7 Average age for trade 39.0 Average age for females in trade 33.4 Average age for males in trade

12.2 Average number of years in service 19.0 Average number of female years in service 11.7 Average number of male years in service

Ranks of female subjects: CPLx1 Ranks of male subjects: CPLx9 SGTx1 PO2x1 MSx1

3 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

6 Total number of subjects reporting time spent in field over past six months 72.5% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 6 Number of male subjects reporting time spent in field over past six months 72.5% Average amount of time spent in field by those males over past six months

9.24b

MOC #811 – MILITARY POLICE

Population Base Data

9.24c

MOC #811 – MILITARY POLICE, continued

Statistical Data – Lavg and Dose

9.24d

MOC #811 – MILITARY POLICE, continued

Statistical Data – TWA and P8Dose

9.24e

MOC #811 – MILITARY POLICE, continued

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.25

STATISTICAL ANALYSIS OF CFB GREENWOOD SUBJECTS: MOC #811 – MILITARY POLICE

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 78.0dBA 66.6dBA 78.0dBA DOSE (allowable %) 23% 5% 14%

7 Total research population 0 Total female population 7 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

38.0 Average age for trade - Average age for females in trade 38.0 Average age for males in trade

19.0 Average number of years in service - Average number of female years in service 19.0 Average number of male years in service

Ranks of female subjects: - Ranks of male subjects: CPLx1 SGTx1 PO2x1 MSx1

2 Total right handedness 1 Total left handedness 0 Total of ambidextrous subjects - Total female right handedness - Total female left handedness - Total female ambidextrous subjects 2 Total male right handedness 1 Total male left handedness 0 Total male ambidextrous subjects

0 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

0 Total number exposed to excessive noise according to dosimetry - Total female subjects exposed to excessive noise according to dosimetry 0 Total male subjects exposed to excessive noise according to dosimetry

9.26

STATISTICAL ANALYSIS OF CFB HALIFAX SUBJECTS: MOC #811 – MILITARY POLICE

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 84.2dBA 72.7dBA 84.2dBA DOSE (allowable %) 615% 28% 388%

10 Total research population 1 Total female population 9 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

30.7 Average age for trade 39.0 Average age for females in trade 29.8 Average age for males in trade

7.4 Average number of years in service 19.0 Average number of female years in service 6.1 Average number of male years in service

Ranks of female subjects: CPLx1 Ranks of male subjects: MCPLx1 CPLx8

8 Total right handedness - Total left handedness - Total of ambidextrous subjects - Total female right handedness - Total female left handedness - Total female ambidextrous subjects 8 Total male right handedness - Total male left handedness - Total male ambidextrous subjects

3 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

5 Total number of subjects reporting time spent in field over past six months 77.0% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 5 Number of male subjects reporting time spent in field over past six months 77.0% Average amount of time spent in field by those males over past six months

9.27

STATISTICAL ANALYSIS OF CFB GREENWOOD AND HALIFAX SUBJECTS: MOC #836 – RESOURCES MANAGEMENT SUPPORT CLERK

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 74.7dBA 59.9dBA 74.7dBA DOSE (allowable %) 626.9% 24.9% 395.5%

20 Total research population 17 Total female population 3 Total male population 3 Total subjects with results deleted due to equipment/personnel complications

36.2 Average age for trade 35.2 Average age for females in trade 41.7 Average age for males in trade

9.9 Average number of years in service 9.9 Average number of female years in service 20.7 Average number of male years in service

Ranks of female subjects: MCPLx2 CPLx3 PO2x1 LSx1 MSx2 OSx2 PTEx3 Ranks of male subjects: CPLx1 SGTx1 MSx1

14 Total right handedness 5 Total left handedness 0 Total of ambidextrous subjects 11 Total female right handedness 5 Total female left handedness 0 Total female ambidextrous subjects 3 Total male right handedness 0 Total male left handedness 0 Total male ambidextrous subjects

3 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

2 Total number of subjects reporting time spent in field over past six months 17.7% Average amount of time spent by those subjects in field over past six months 1 Number of female subjects reporting time spent in field over past six months 2.0% Average amount of time spent in field by those females over past six months 1 Number of male subjects reporting time spent in field over past six months 33.3% Average amount of time spent in field by those males over past six months

1 Total number exposed to excessive noise according to dosimetry 1 Total female subjects exposed to excessive noise according to dosimetry 0 Total male subjects exposed to excessive noise according to dosimetry

9.27b

MOC #836 – RESOURCES MANAGEMENT SUPPORT CLERK

Population Base Data

9.27c

MOC #836 – RESOURCES MANAGEMENT SUPPORT CLERK, continued

Statistical Data – Lavg and Dose

9.27d

MOC #836 – RESOURCES MANAGEMENT SUPPORT CLERK, continued

Statistical Data – TWA and P8Dose

9.27e

MOC #836 – RESOURCES MANAGEMENT SUPPORT CLERK, continued

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.28

STATISTICAL ANALYSIS OF CFB GREENWOOD SUBJECTS: MOC #836 – RESOURCES MANAGEMENT SUPPORT CLERK

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 77.9dBA 64.0dBA 77.9dBA DOSE (allowable %) 1179% 46% 744%

12 Total research population 11 Total female population 1 Total male population 3 Total subjects with results deleted due to equipment/personnel complications

36.2 Average age for trade 35.5 Average age for females in trade 44.0 Average age for males in trade

7.9 Average number of years in service 6.9 Average number of female years in service 22.0 Average number of male years in service

Ranks of female subjects: MCPLx2 CPLx3 OSx1 PTEx2 Ranks of male subjects: MSx1

9 Total right handedness 2 Total left handedness 0 Total of ambidextrous subjects 8 Total female right handedness 2 Total female left handedness 0 Total female ambidextrous subjects 1 Total male right handedness 0 Total male left handedness 0 Total male ambidextrous subjects

3 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

1 Total number of subjects reporting time spent in field over past six months 2% Average amount of time spent by those subjects in field over past six months 1 Number of female subjects reporting time spent in field over past six months 2% Average amount of time spent in field by those females over past six months 0 Number of male subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those males over past six months

9.29

STATISTICAL ANALYSIS OF CFB HALIFAX SUBJECTS: MOC #836 – RESOURCES MANAGEMENT SUPPORT CLERK

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 71.1dBA 55.3dBA 71.1dBA DOSE (allowable %) 5 % 1% 3%

8 Total research population 6 Total female population 2 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

36.1 Average age for trade 34.7 Average age for females in trade 40.5 Average age for males in trade

13.1 Average number of years in service 10.8 Average number of female years in service 20.0 Average number of male years in service

Ranks of female subjects: PO2x1 LSx1 MSx2 OSx1 PTEx1 Ranks of male subjects: SGTx1 CPLx1

5 Total right handedness 3 Total left handedness 0 Total of ambidextrous subjects 3 Total female right handedness 3 Total female left handedness 0 Total female ambidextrous subjects 2 Total male right handedness 0 Total male left handedness 0 Total male ambidextrous subjects

0 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

1 Total number of subjects reporting time spent in field over past six months 33.3% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 1 Number of male subjects reporting time spent in field over past six months 33.3% Average amount of time spent in field by those males over past six months

9.30

STATISTICAL ANALYSIS OF CFB GREENWOOD SUBJECTS: MOC #861 – COOK

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 90.4dBA 81.6dBA 90.4dBA DOSE (allowable %) 889.4% 48.4% 561.1%

9 Total research population 1 Total female population 8 Total male population 1 Total subjects with results deleted due to equipment/personnel complications

25.7 Average age for trade 44.0 Average age for females in trade 23.4 Average age for males in trade

9.1 Average number of years in service 20 Average number of female years in service 7.7 Average number of male years in service

Ranks of female subjects: MCPLx1 Ranks of male subjects: CPLx1 SGTx1 MSx1 PTEx5

3 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

6 Total number of subjects reporting time spent in field over past six months 6.15% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 6 Number of male subjects reporting time spent in field over past six months 6.15% Average amount of time spent in field by those males over past six months

5 Total number exposed to excessive noise according to dosimetry 0 Total female subjects exposed to excessive noise according to dosimetry 5 Total male subjects exposed to excessive noise according to dosimetry

9.30b

MOC #861 – COOK

Population Base Data

Statistical Data – Lavg and Dose

9.30c

MOC #861 – COOK, continued

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.31

STATISTICAL ANALYSIS OF CFB GREENWOOD AND HALIFAX SUBJECTS: MOC #911 – SUPPLY TECHNICIAN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 81.7dBA 68.4dBA 81.7dBA DOSE (allowable %) 938.2% 28.7% 591.9%

22 Total research population 4 Total female population 18 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

32.1 Average age for trade 30.3 Average age for females in trade 32.5 Average age for males in trade

8.3 Average number of years in service 19.8 Average number of female years in service 7.9 Average number of male years in service

Ranks of female subjects: CPLx1 LSx2 PTEx1 Ranks of male subjects: CPLx8 LSx2 OSx3 PTEx5

14 Total right handedness 6 Total left handedness 0 Total of ambidextrous subjects 3 Total female right handedness 1 Total female left handedness 0 Total female ambidextrous subjects 11 Total male right handedness 5 Total male left handedness 0 Total male ambidextrous subjects

3 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

3 Total number of subjects reporting time spent in field over past six months 9.7% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 3 Number of male subjects reporting time spent in field over past six months 9.7% Average amount of time spent in field by those males over past six months

9.31b

MOC #911 – SUPPLY TECHNICIAN

Population Base Data

9.31c

MOC #911 – SUPPLY TECHNICIAN, continued

Statistical Data – Lavg and Dose

9.31d

MOC #911 – SUPPLY TECHNICIAN, continued

Statistical Data – TWA and P8Dose

9.31e

MOC #911 – SUPPLY TECHNICIAN, continued

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.32

STATISTICAL ANALYSIS OF CFB GREENWOOD SUBJECTS: MOC #911 – SUPPLY TECHNICIAN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 82.2dBA 73.6dBA 82.2dBA DOSE (allowable %) 191% 54% 120%

11 Total research population 1 Total female population 10 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

32.0 Average age for trade 19.0 Average age for females in trade 33.3 Average age for males in trade

9.5 Average number of years in service .25 Average number of female years in service 10.4 Average number of male years in service

Ranks of female subjects: PTEx1 Ranks of male subjects: CPLx6 PTEx4

7 Total right handedness 2 Total left handedness 0 Total of ambidextrous subjects 1 Total female right handedness 0 Total female left handedness 0 Total female ambidextrous subjects 6 Total male right handedness 2 Total male left handedness 0 Total male ambidextrous subjects

2 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

2 Total number of subjects reporting time spent in field over past six months 3% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 2 Number of male subjects reporting time spent in field over past six months 3% Average amount of time spent in field by those males over past six months

3 Total number exposed to excessive noise according to dosimetry 1 Total female subjects exposed to excessive noise according to dosimetry 2 Total male subjects exposed to excessive noise according to dosimetry

9.33

STATISTICAL ANALYSIS OF CFB HALIFAX SUBJECTS: MOC #911 – SUPPLY TECHNICIAN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 78.2dBA 63.9dBA 78.2dBA DOSE (allowable %) 41% 4% 26%

11 Total research population 3 Total female population 8 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

32.1 Average age for trade 34.0 Average age for females in trade 31.4 Average age for males in trade

7.1 Average number of years in service 20 Average number of female years in service 4.8 Average number of male years in service

Ranks of female subjects: CPLx1 LSx2 Ranks of male subjects: CPLx2 LSx2 OSx3 PTEx1

7 Total right handedness 4 Total left handedness 0 Total of ambidextrous subjects 2 Total female right handedness 1 Total female left handedness 0 Total female ambidextrous subjects 5 Total male right handedness 3 Total male left handedness 0 Total male ambidextrous subjects

1 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

1 Total number of subjects reporting time spent in field over past six months 23% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 1 Number of male subjects reporting time spent in field over past six months 23% Average amount of time spent in field by those males over past six months

9.34

STATISTICAL ANALYSIS OF CFB HALIFAX SUBJECTS: MOC #921 – AMMUNITION TECHNICIAN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 82.1dBA 74.4dBA 82.1dBA DOSE (allowable %) 72.2% 12.5% 45.6%

9 Total research population 0 Total female population 9 Total male population 1 Total subjects with results deleted due to equipment/personnel complications

34.6 Average age for trade - Average age for females in trade 34.6 Average age for males in trade

14.9 Average number of years in service - Average number of female years in service 14.9 Average number of male years in service

Ranks of female subjects: - Ranks of male subjects: MCPLx4 CPLx3 SGTx2

9 Total right handedness 0 Total left handedness 0 Total of ambidextrous subjects - Total female right handedness - Total female left handedness - Total female ambidextrous subjects 9 Total male right handedness 0 Total male left handedness 0 Total male ambidextrous subjects

2 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

2 Total number of subjects reporting time spent in field over past six months 1.5% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 2 Number of male subjects reporting time spent in field over past six months 1.5% Average amount of time spent in field by those males over past six months

2 Total number exposed to excessive noise according to dosimetry 0 Total female subjects exposed to excessive noise according to dosimetry 2 Total male subjects exposed to excessive noise according to dosimetry

9.34b

MOC #921 – AMMUNITION TECHNICIAN

Population Base Data

Statistical Data – Lavg and Dose

9.34c

MOC #921 – AMMUNITION TECHNICIAN, continued

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.35

STATISTICAL ANALYSIS OF CFB GREENWOOD SUBJECTS: MOC #933 – TRAFFIC TECHNICIAN

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 86.0dBA 79.2dBA 86.0dBA DOSE (allowable %) 1211.7% 81.4% 764.5%

12 Total research population 2 Total female population 10 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

38.6 Average age for trade 42.0 Average age for females in trade 37.9 Average age for males in trade

18.2 Average number of years in service 21.0 Average number of female years in service 17.6 Average number of male years in service

Ranks of female subjects: MCPLx2 Ranks of male subjects: MCPLx4 CPLx5 PTEx1

7 Total right handedness 3 Total left handedness 0 Total of ambidextrous subjects - Total female right handedness - Total female left handedness - Total female ambidextrous subjects 7 Total male right handedness 3 Total male left handedness 0 Total male ambidextrous subjects

1 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

2 Total number of subjects reporting time spent in field over past six months 45% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 2 Number of male subjects reporting time spent in field over past six months 45% Average amount of time spent in field by those males over past six months

9.35b

MOC #933 – TRAFFIC TECHNICIAN

Population Base Data

Statistical Data – Lavg and Dose

9.35c

MOC #933 – TRAFFIC TECHNICIAN, continued

Statistical Data – TWA and P8Dose

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.36

STATISTICAL ANALYSIS OF CFB GREENWOOD AND HALIFAX SUBJECTS: MOC #935 – MOBILE SUPPORT EQUIPMENT OPERATOR

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 81.5dBA 72.3dBA 81.5dBA DOSE (allowable %) 90.9% 11.2 % 57.4%

22 Total research population 1 Total female population 21 Total male population 1 Total subjects with results deleted due to equipment/personnel complications

34.6 Average age for trade 20.0 Average age for females in trade 35.5 Average age for males in trade

12.3 Average number of years in service 1.5 Average number of female years in service 12.1 Average number of male years in service

Ranks of female subjects: PTEx1 Ranks of male subjects: CPLx18 PTEx2 CIVx1

14 Total right handedness 8 Total left handedness 0 Total of ambidextrous subjects 1 Total female right handedness 0 Total female left handedness 0 Total female ambidextrous subjects 13 Total male right handedness 8 Total male left handedness 0 Total male ambidextrous subjects

5 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

5 Total number of subjects reporting time spent in field over past six months 7.0% Average amount of time spent by those subjects in field over past six months 1 Number of female subjects reporting time spent in field over past six months 3.8% Average amount of time spent in field by those females over past six months 4 Number of male subjects reporting time spent in field over past six months 7.9% Average amount of time spent in field by those males over past six months

9.36b

MOC #935 – MOBILE SUPPORT EQUIPMENT OPERATOR

Population Base Data

9.36c

MOC #935 – MOBILE SUPPORT EQUIPMENT OPERATOR, continued

Statistical Data – Lavg and Dose

9.36d

MOC #935 – MOBILE SUPPORT EQUIPMENT OPERATOR, continued

Statistical Data – TWA and P8Dose

9.36e

MOC #935 – MOBILE SUPPORT EQUIPMENT OPERATOR, continued

Statistical Data – Slow Maximum, Slow Minimum and Peak

9.37

STATISTICAL ANALYSIS OF CFB GREENWOOD SUBJECTS: MOC #935 – MOBILE SUPPORT EQUIPMENT OPERATOR

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 81.7dBA 73.6dBA 81.7dBA DOSE (allowable %) 60% 13% 38%

12 Total research population 0 Total female population 12 Total male population 0 Total subjects with results deleted due to equipment/personnel complications

38.3 Average age for trade - Average age for females in trade 38.3 Average age for males in trade

14.5 Average number of years in service - Average number of female years in service 14.5 Average number of male years in service

Ranks of female subjects: - Ranks of male subjects: CPLx11 PTEx1

6 Total right handedness 6 Total left handedness 0 Total of ambidextrous subjects - Total female right handedness - Total female left handedness - Total female ambidextrous subjects 6 Total male right handedness 6 Total male left handedness 0 Total male ambidextrous subjects

4 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

2 Total number of subjects reporting time spent in field over past six months 5% Average amount of time spent by those subjects in field over past six months 0 Number of female subjects reporting time spent in field over past six months 0% Average amount of time spent in field by those females over past six months 2 Number of male subjects reporting time spent in field over past six months 5% Average amount of time spent in field by those males over past six months

9.38

STATISTICAL ANALYSIS OF CFB HALIFAX SUBJECTS: MOC #935 – MOBILE SUPPORT EQUIPMENT OPERATOR

Dosimeter #3 Dosimeter #2 Dosimeter #1 LAVG (average dBA) 81.2dBA 70.4dBA 81.2dBA DOSE (allowable %) 132% 9% 83%

10 Total research population 1 Total female population 9 Total male population 1 Total subjects with results deleted due to equipment/personnel complications

30.5 Average age for trade 20.0 Average age for females in trade 31.7 Average age for males in trade

9.8 Average number of years in service 1.5 Average number of female years in service 8.8 Average number of male years in service

Ranks of female subjects: PTEx1 Ranks of male subjects: CPLx7 PTEx1 CIVx1

8 Total right handedness 2 Total left handedness 0 Total of ambidextrous subjects 1 Total female right handedness 0 Total female left handedness 0 Total female ambidextrous subjects 7 Total male right handedness 2 Total male left handedness 0 Total male ambidextrous subjects

1 Total number reporting subjective loud sound exposure during break periods

0 Number of subjects reporting weapons use

3 Total number of subjects reporting time spent in field over past six months 8.4% Average amount of time spent by those subjects in field over past six months 1 Number of female subjects reporting time spent in field over past six months 3.8% Average amount of time spent in field by those females over past six months 2 Number of male subjects reporting time spent in field over past six months 10.8% Average amount of time spent in field by those males over past six months

10.0

GRAPHICAL PRESENTATION OF STATISTICAL ANALYSIS

The reader is referred to pages 9.2, STATISTICAL ANALYSIS OF TOTAL CFB SUBJECTS - ALL TRADES ON BOTH BASES for significant information. Additionally, the table presented below is for trade comparison of overall sound intensity reality measures of (LAVG) and noise dose (DOSE).

Trade LAVG DOSE LAVG DOSE LAVG DOSE Dosimeter Dosimeter Dosimeter Dosimeter Dosimeter Dosimeter #1 in dBA #1 in % #2 in dBA #2 in % #3 in dBA #3 in % 39 81.9 1174.4 70.0 65.7 81.9 1861.0 081 84.2 2110.9 73.8 112.2 84.2 3345.6 181 85.6 186.2 78.0 25.1 85.6 295.1 226 85.5 688.5 75.8 52.2 85.5 1091.3 277 90.4 554.6 80.6 44.3 90.4 879.0 313 83.8 65.2 74.0 11.9 83.8 103.3 R315 86.2 187.7 78.7 25.2 86.2 297.4 331 90.9 1197.5 82.1 73.5 90.9 1898.1 411 83.1 166.1 73.7 19.9 83.1 263.3 514 86.2 1509.9 76.9 91.6 86.2 2393.0 648 83.8 196.4 71.8 21.7 83.8 311.2 651 85.8 1356.4 75.3 68.9 85.8 2149.7 733 72.2 4.3 55.6 1.2 72.2 6.7 811 81.6 234.0 70.2 18.5 81.6 370.8 836 74.7 395.5 59.9 24.9 74.7 626.9 861 90.4 561.1 81.6 48.4 90.4 889.4 911 81.7 591.9 68.4 28.7 81.7 938.2 921 82.2 45.6 73.6 12.5 82.2 72.2 933 86.0 764.5 79.2 81.4 86.0 1211.7 935 81.5 57.4 72.3 11.2 81.5 90.9

As can be seen above, almost all trades have the potential of excessive exposure to intense noise, at some times with some individuals. The trades with the highest general noise levels include, in decreasing order: #331-Electrical Technician #861-Cook and #277-Naval Communications #R315-Marine Engineering System Operator and #514-Aviation Systems Technician #933-Traffic Technician #651-Fire Fighter #181-Bosn #226-Aerospace Telecommunication and Information Systems

10.1

GRAPHICAL DEPICTION OF LAVG , MEDIAN AND SLOW MAXIMUM VALUES FOR ALL THREE DOSIMETERS

The Lavg values depicted above (the red line for dosimeters #1 and #3 and the blue line for dosimeter #2) are the average, or mean sound levels, in decibels (dBA), for the measurement period, and allow a cross-trade comparison.

The Lavg median values depicted above (the green line for dosimeters #1 and #3 and the brown line for dosimeter #2) represent the middle value and/or average of two middle values of the Lavg measures when arranged in an increasing order of magnitude. The median, generally, is not so easily affected by extreme values as is the mean.

The slow maximum mean values depicted above (the gray line for all dosimeters) is the highest sound pressure level, in decibels (dBSPL), that occurred during the measurement period, with a meter averaging time of 1 second. 10.2

GRAPHICAL DEPICTION OF DOSE PERCENTAGES FOR ALL THREE DOSIMETERS

The Dose values depicted above represent the actual percentage of the 24-hour daily maximum allowable noise to which a person has been exposed. The maximum allowed is 100%. This chart permits a cross-trade comparison.

11.0

CONFOUNDING FACTORS

There are number of confounding factors that can skew statistical data for a given trade. They include:

1. A relatively non-noisy trade that is often working in an environment shared with a noisy trade, thus increasing noise exposure. An example is an electrician. Most of the work done by an electrician is not significantly noise producing, however, they are often working at a construction site where heavy equipment and other noise-producing processes are in evidence. Another example was with an office-based trade in Halifax housed in a building undergoing extensive renovation on the other side of the wall; overall noise exposure in the office was significant. This is a very common problem.

2. A problem similar to #1, above, can be encountered by “quiet” trades whose workplaces are near other noise sources on a consistent basis. An example of this is some of the offices located just at the end of aircraft runways, under the flight path. Although their jobs are considered quiet, they have nearly constant air traffic noise.

3. Fire fighter noise exposure is under-rated, as the fire fighters put their heavy fire coats over the dosimeter microphone when going out on a call (which is the noisiest scenario). This is done to save time; during an emergency they cannot take the time it requires to remove the dosimeter and place it on their safety coats.

4. Microphone placement. All subjects in this study, except two, used a left shoulder/collar placement. Two subjects could not use the left shoulder due to the necessity to use the left shoulder for other equipment.

5. Handedness can be a variable. A right-handed person may utilize noisy equipment such as an impact wrench, significantly closer to their right ear than to their left ear. This may provide diminished intensity readings.

6. Subject interference with measurement instrumentation. This did not appear to be a big problem in this study, but control manipulation, microphone handling, and attempting to increase the readings with noisier activities could be a significant factor.

7. Government noise guidelines. Different jurisdictions have dissimilar legislation, as evidenced by the three dosimeter set-ups used in this study. The noise exposure levels one jurisdiction considers excessive, another jurisdiction may not.

8. Some work days are “slow” days, wherein the worker has few noisy activities than on other, more average days. In some trades, the jobs may vary from one day to the next in such a manner that noisy equipment is heavily used on some days, and not on other days.

11.1

9. Fridays, especially those that precede a holiday Monday, are often reported as partial workdays, or workdays where very little actual noise-producing activities are occurring.

10. Summer months in general contain the majority of vacation time. Many trades report that there are fewer workers around them during these times, which would decrease the amount of noise produced.

11. Naval personnel present a challenge to noise measurement. This project measured their noise exposure while in harbour, naturally. However, during land-based times, which can sometimes consume half of the work year, personnel sleep at home, rather than aboard ship with its attendant higher than average noise levels. While at sea, personnel are exposed to ambient noise 24 hours a day. While land-based, personnel may work aboard ship during the day, doing repairs, etc., but during these times it is possible that not all systems that produce noise are operating, or are not operating at full capacity. Conversely, while land-based, some personnel actually spend more time doing repairs in noise areas, such as engine rooms, that they would while at sea.

12. Many cooks work not only in the regular kitchens (which are generally quite noisy in most institutions), but spend significant time at “field” kitchens. At field kitchens, which are generally canvas tents, the cooks are often working all day within about 8 to 10 feet from a diesel electrical generator. These units are next to the tent to provide the kitchen with power.

12.0

NOISE SURVEY RESULTS

The noise survey consisted of a questionnaire that each research subject was asked to fill out. This survey asked questions about such categories as: 1. Trade 2. Rank 3. Job/job duties 4. Equipment used during the measurement day 5. Vehicles used during the measurement day. 6. Weapon use during the day. 7. Noise exposure during rest periods. 8. Time spent in the field over the past 6 months.

The reader is referred to section 9 for details on most of these responses. Page 9.2 presents a summary of the survey results for the entire research population, while pages 9.3 and 9.4 presents summaries for CFB Greenwood and CFB Halifax in their entireties, respectively. The remainder of section 9 is devoted to the survey results by trade.

A distillation of some comments on the survey forms, and transmitted verbally to the contractor include:

• Work breaks are often taken right in the work environment, not in a quieter area.

• Work breaks taken outdoors may expose some to yard maintenance noise, aircraft noise, etc.

• Break noise exposure is subjective; some spending breaks together will find it noisy, while co-workers will not.

• Loud noise in some of the break areas is so common it is not noticed unless questioned.

• Military police may work on the ground, in a car, aboard a ship, aboard a small police boat, near an emergency such as a fire with its accompanying noises, etc. Some days siren noise is nil, while on others it is significant.

• It’s a much quieter day in port, rather than when at sea.

• Fridays are always quieter around here.

• At sea you can’t seem to get away from noise.

• We can’t use hearing protection, because we have to be able to hear equipment operation and/or communication systems for reasons of safety.

13.0

CONCLUSIONS AND RECOMMENDATIONS

Based on the results of this portion of the project, it can be concluded that almost all of the trades surveyed for the project have the potential of excessive exposure to intense noise, at some times for some individuals. Some trades, however, have a greater overall risk potential.

Some trades had higher noise level averages than other trades. Even in the higher noise level average trades, some participants had noise exposures that were not considered to be hazardous to hearing.

Not all trade members do the same job, or the noisier jobs may rotate amongst members. The noise may be self-generated, or originate with other personnel or equipment sharing the same work space. Many of the noises measured with dosimetry are of a high-enough intensity that one would expect permanent damage to hearing to many of the personnel over time, according to Provincial Department of Labour threshold limit values (TLVs); this is borne out by Veterans Affairs Canada and Veterans Review and Appeal Board statistics. These same VAC/VRAB statistics suggest that the hearing conservation programs within the Canadian Forces is not as effective in limiting hearing damage by noise as is desirable. That is one of the reasons why this current study was undertaken.

The trades with the highest general noise levels measured for this project include, in decreasing order: #331-Electrical Technician #861-Cook and #277-Naval Communications #R315-Marine Engineering System Operator and #514-Aviation Systems Technician #933-Traffic Technician #651-Fire Fighter #181-Bosn #226-Aerospace Telecommunication and Information Systems

The above list does not mean that some members of trades with lower average noise dosimetry exposures are not at risk. Individual examples can be extracted from the raw data that show the converse.

It is very probable that fire fighters have the highest noise exposure levels in the group, even though their averages are not the highest, due to the fact that they have to wear heavy fire coats on top of the dosimeter microphones, by necessity. These heavy coats will provide significant attenuation to sound reaching the microphones.

It is further concluded that this project has contributed significantly to the overall knowledge base and understanding of noise exposures in Canadian Forces personnel.

13.1

This contractor would like to present the following recommendations:

1. Obviously, it is not possible to perform dosimetry for all Canadian Forces trades, within the scope of this single project. The personnel involved had to meet with certain requirements. It is recommended that an expansion of this noise measurement project be initiated to include virtually all trades, even ones with limited numbers of employees.

2. Sound level measurements, static and dosimetry, need to be completed with personnel in all of their various work environments, for example: a. at sea aboard naval vessels, while under full operation b. in field placements (such as field kitchens) c. aboard aircraft in full operation d. within all land transportation vehicles e. with various trades during all major aspects of their work

3. Items to be included in future noise surveys (and not thought of by this contractor in time for this project) would be questions relating to current use practices with hearing protection devices and activities.

4. Rapid intervention in the known noise trades/environments of an effective hearing conservation program, to minimize permanent hearing loss now; delay could allow further permanent hearing damage to significant numbers of people. These programs work extremely well in industry, where applied.

5. Institution of a hearing conservation educational component for personnel exposed to excessive noise.

6. Correlation of this project, and future projects, with Veterans Affairs Canada claims for hearing loss, to note relationship.

_____

This contractor would like to thank Dr. Sharon Abel for the opportunity to be involved with a portion of this project. Hearing conservation is of extreme importance to the individual person, as well to performance in the workplace.

14.0 CURRICULUM VITAE OF CONTRACTOR ═══════════════════════════════════════════════════════════════════════════════

Name: Gordon Lee Whitehead Date of Birth: 29 September 1943 Citizenship: Canadian Address: 210 Windsor Drive, Stillwater Lake, Nova Scotia B3Z 1G5 Telephone: (902) 826-9528 Facsimile: (902) 826-9529 E-Mail Address: [email protected]

______PROFESSIONAL EDUCATION/CERTIFICATION:

Bachelor of Science degree (B.S.) in Audiology and Speech Language Pathology, minor in Psychology, Western Illinois University, Macomb, Illinois, U.S.A., granted in 1966.

Master of Arts degree (M.A.) in Audiology, Northern Illinois University, DeKalb, Illinois, U.S.A., completed in 1968, granted in 1969.

Professional certification in Audiology AAud(C)@ from the Canadian Association of Speech Language Pathologists and Audiologists, the national Canadian professional certification organization. ______

PRESENT EMPLOYMENT:

President, G.W.Hearing Conservation and Civic Audiology Ltd., Halifax, Nova Scotia, from September 2000.

Adjunct Professor/Lecturer, Dalhousie University, Graduate School, School of Human Communication Disorders, Halifax, Nova Scotia, 1980 to present. Currently teaching coursework in Noise in Industry and the Community.

Clinical Educator, Dalhousie University, Graduate School, School of Human Communication Disorders, Halifax, Nova Scotia, 1980 to present.

Various audiological consultantships, internationally. ______

RECENT AND/OR ONGOING CONSULTANTSHIPS:

Veterans Review and Appeal Board Canada, Charlottetown, Prince Edward Island. Ongoing audiological consultantship.

Royal Canadian Mounted Police, Community Noise Bylaw Enforcement Training, various locations. Sound level training certification workshops for RCMP personnel; ongoing audiological consultant.

Railroad Association of Canada/Canadian National Railway. Ongoing consultantship on hearing standards.

Attorney General=s Office/National Police Force, the Department of Health, and the Department of the Environment, Road Town, Tortola, British Virgin Islands. Ongoing consultantship.

Workers’ Compensation Board of Nova Scotia, activities include sound level measurement/analysis in relationship to hearing loss, and back-to-work assessments. 14.1

. . . Gordon Whitehead, Curriculum Vitae, continued . . .

______

MAJOR CURRENT PROFESSIONAL ACTIVITIES:

Sound Level Measurement and Analysis and Formal Reporting, services have been provided in myriad environments, including industrial, mining, naval/military, educational institutions, music industry, compensation activities, etc. Measurement includes sound intensity, spectrum analysis, reverberation analysis, etc.

Acoustical Assessment/Modification Recommendations, bandrooms/rehearsal rooms, classrooms, gymnasia, etc.

Provision of Hearing Conservation Services, including sound level measurement and analysis, noise reduction/hearing protection, hearing testing/retesting, and hearing conservation employee educational activities.

Educational/Training Workshops, hearing conservation training and refresher courses, occupational health nursing workshops, tinnitus management for audiologist workshops, employee education, special-purpose workshops relating to noise and hearing issues, police training relating to noise issues, etc. Custom designed/taught workshops with an audiological content, as requested.

University Teaching/Professorship, audiology graduate program full coursework relating to Noise in Industry and the Community, and requested lectures in other courses. Many university graduate level courses have been taught over the past 23 years.

Calibration Services, calibration of audiological instrumentation for hospital-based audiology clinics, private practice audiology clinics, school and industrial hearing screening programs.

Client Audiological Diagnostic Services, limited predominantly to tinnitus patients.

Note: professional audiology services have been provided for more than 35 years. ______

PROFESSIONAL ASSOCIATION AFFILIATIONS:

Canadian Association of Speech Language Pathologist and Audiologists (CASLPA) - full member. • Holds professional certification [Aud(C)] in Audiology from CASLPA. • CASP (Canadian Accreditation of Service Programs) site visitor, for the professional accreditation of audiology clinic facilities in Canada.

Speech and Hearing Association of Nova Scotia (SHANS) - full member.

______NEW AUDIOLOGICAL CLINIC ESTABLISHMENT ACTIVITIES (15 Clinics):

Established audiology clinic at Surrey Place Centre (formerly Mental Retardation Centre), Toronto, Ontario.

Established Barrie Audiology Clinic, a private practice clinic, Barrie, Ontario.

14.2

. . . New Audiological Clinic Establishment Activities, continued . . . ______

While serving as Audiology Division Supervisor/Assistant Supervisor for the Nova Scotia Hearing and Speech Clinic, was instrumental in establishing thirteen initial, permanent audiology clinics in the following Nova Scotia communities: Sydney Mines, Glace Bay, Cleveland, Antigonish, New Glasgow, Truro, Amherst, Kentville, Yarmouth, Bridgewater, Lower Sackville, Camp Hill Hospital (Halifax), Halifax Infirmary (Halifax). Also established two civilian ENG (electronystagmographic) clinics in Nova Scotia (Halifax and Sydney). ______

PREVIOUS PERTINENT EMPLOYMENT:

Director, Industrial and Community Audiology - Nova Scotia Hearing and Speech Clinic (NSHSC), Halifax, Nova Scotia, September 1997 to 31 October 2000.

Audiologist, Nova Scotia Hearing and Speech Clinic, Halifax, Nova Scotia, November 1990 to September 1997.

Supervisor of the Audiology Division, Nova Scotia Hearing and Speech Clinic, Halifax, Nova Scotia, September 1981 to November 1990. Directly involved in setting up 13 new audiology clinics around Nova Scotia.

Assistant Supervisor of the Audiology Division, Nova Scotia Hearing and Speech Clinic, Halifax, Nova Scotia, June 1980 to September 1981.

Audiologist, Nova Scotia Hearing and Speech Clinic, Halifax, Nova Scotia, November 1979 to June 1980.

Lecturer, Teacher Education of the Deaf (TED Graduate Program), Université de Moncton, Moncton, New Brunswick, 1987, 1989, 1990.

Audiology Clinical Practicum Coordinator, Dalhousie University, Graduate School, School of Human Communication Disorders, 1980-1981 academic year.

Clinical Audiologist/founder, Barrie Audiology Clinic, Barrie, Ontario, March 1975 to August 1979. This is a private practice clinic that is still operating.

Industrial Audiologist/Founder, Hearing Conservation Services, Barrie, Ontario, March 1975 to August 1979.

Audiological Consultant, Huronia Regional Centre for the Mentally Retarded, Orillia, Ontario, 1974/’77/‘79.

Audiological Consultant, Prince Edward Heights, Hospital School for the Mentally Retarded, Picton, Ontario, 1972 to 1974.

Clinical Supervisor, Department of Rehabilitative Medicine, Program in Speech Language Pathology, University of Toronto, Toronto, Ontario, July 1970 to December 1974.

Audiological Consultant, Ottawa Civic Hospital, Department of Otolaryngology, Ottawa, Ontario, 1970-1973.

Audiological Consultant-Cortical Audiometry, Children=s Psychiatric Research Institute, London, Ontario-1970. 14.3

. . . Previous Pertinent Employment, continued . . . ______

Research Audiologist/Research Grant Writer, Department of Otolaryngology, University of Toronto, Toronto, Ontario, July 1969 to July 1975.

Clinical Audiologist, Toronto General Hospital, Toronto, Ontario, July 1969 to January 1975.

Clinical/Research Audiologist (and founder of Audiology Clinic), Mental Retardation Centre, (now Surrey Place Centre), Toronto, Ontario, July 1969 to January 1973.

Audiologist, Dixon State School for the Mentally Retarded, Dixon, Illinois, July 1968 to June 1969.

Teacher of aural rehabilitation, speech reading, auditory discrimination, remedial English and current events, in adult deaf vocational rehabilitation program, State of Illinois Department of Vocational Rehabilitation, Northern Illinois University, DeKalb, Illinois, 1967-1968 academic year.

Speech Language Therapist, Dixon State School for the Mentally Retarded, Dixon, Illinois, June to Sept., 1967. ______

MISCELLANEOUS:

Adjunct professor/lecturer in graduate schools of Dalhousie University/Université de Moncton/University of Toronto, teaching numerous courses, including: Noise in Industry and the Community, Introduction to Audiology, Hearing Aids, Pediatric Audiology, Electrophysiological Audiometry seminar, Electronystagmography seminar, Calibration seminar, etc.

Presenter of hundreds of lectures and workshops from one hour to three day=s duration, including most areas of diagnostic audiology, industrial hearing conservation, cortical audiometry, sound level measurement and analysis, physics of sound, instrument calibration, infant hearing screening, tinnitus management, electronystagmography, and electrocochleography.

Active participant in the CASP (Canadian Accreditation of Service Programs) process that evaluates and accredits hospital-based and private audiology clinics across Canada.

Expert witness in numerous court sessions and compensation hearings.

Recipient of audiological sound level measurement/analysis contract services for the Canadian Department of Defence-funded study granted to Dr. Sharon Abel and Brian Crabtree, entitled “A Study of Risk Factors for the Development of Noise-Induced Hearing Loss in Canadian Forces Personnel”, July 2003-January 2004.

Recipient of Veterans Review and Appeal Board Canada (Public Works and Government Services Canada contract #51019-02-7022), 2003, for policy development: Tinnitus Disability Guidelines: Development of a Formal, Model Tinnitus Policy, and Hearing Loss Disability Guidelines: Recommended Revisions to Existing Policy.

Writer/co-researcher of four Defence Research Grants entitled AHearing Under Stress,@ Department of Otolaryngology, University of Toronto, Toronto, Ontario, 1973 to 1977. 14.4

. . . Miscellaneous, continued . . . ______

Councillor, Executive Board, Ontario Speech and Hearing Association, Toronto, Ontario, 1972 and 1973.

Acting Chairperson/Co-founder, Audiology Section, Ontario Speech and Hearing Association, 1973.

Study visit (impedance), Dr. K. Terkildsen, Copenhagen, Denmark, 1969.

Study visit (pediatric assessment), Dr. B. Barr, Stockholm, Sweden, 1969.

Study visit (insert masking), Dr. T. Jouhiainen, Helsinki, Finland, 1969.

Study visit (evoked response audiometry), Dr. G. Solomon, Copenhagen, Denmark, 1969.

Study visit (noise exposure), Dr. Salmavalli, Turku, Finland, 1969.

______PUBLICATIONS:

Baker, J.G. and Whitehead, G. A portable recording apparatus for rating behavior in free-operant situations. Journal of Applied Behavior Analysis, 1972, 5, 191-192.

Baldursson, G. and Whitehead, G. Industrial Hearing Conservation Workshop Manual, 62 pages, 1980.

Dayal, V.S., Whitehead, G.L. and Smith, E.L. Gentamycin: progressive cochlear toxicity. Canadian Journal of Otolaryngology, 4 (2), 348-351, 1975.

Deecke, L., Goode, R., Whitehead, G., Johnson, W., and Bryce, D.P. Hearing Under Respiratory Stress: part I. Latency changes of the human auditory evoked response during hyperventilation, hypoxia, asphyxia, and hypercapnia. Aerospace Medicine, 44 (10): 1106-1111, 1973.

Published simultaneously in German in EEG/EMG, 4 (4): 176-181, 1973.

Whitehead, G. The audiologist in private practice. Human Communication Canada, VII (6), 371-374, 1983.

Whitehead, G. The clinical applicability of eeg audiometry. Journal of the Ontario Speech and Hearing Association, 1971.

Whitehead, G. Tinnitus Management. Canadian Association of Speech Language Pathologist and Audiologists Communiqué, 15: 11-13, 2001.

Whitehead, Gordon. Tinnitus Management Strategies for Audiologists: A Practical Guide for the Clinical Audiologist. 88 page textbook. Halifax, 2002.

Whitehead, G.L., Goode, R.C., Rubin, A.M., Johnson, W.H., and Bryce, D.P. Hearing under stress: part II. Effect of hyperventilation and hypercapnia on speech discrimination. Aviation, Space and Environmental Medicine, 48 (1): 5-6, 1977.

14.5

. . . Publications, continued . . . ______

Whitehead, G.L., Rubin, A.M., Johnson, W.H., and Bryce, D.P. Hearing under stress: part III. The effect of external auditory meatal pressure on speech discrimination. Aviation, Space and Environmental Medicine, 47 (3): 308-309, 1976.

Whitehead, G.L., Rubin, A.M., Johnson, W.H., and Bryce, D.P. Hearing under stress: part IV. A speech delivery communication system for utilization in high ambient noise environments. Aviation, Space and Environmental Medicine, 47(8): 811-812, 1976.

Published simultaneously in O.R.L. Digest, 1976.

DOCUMENT CONTROL DATA SHEET

1a. PERFORMING AGENCY 2. SECURITY CLASSIFICATION G.W. Hearing Conservation and Civic Audiology Ltd., Stillwater, Nova Scotia B3Z 1G5 UNCLASSIFIED -

1b. PUBLISHING AGENCY DRDC Toronto

3. TITLE

(U) A Noise Dosimetry Study of Selected Military Trades at CFB Greenwood and CFB Halifax

4. AUTHORS

Gordon Whitehead

5. DATE OF PUBLICATION 6. NO. OF PAGES

February 28 , 2004 122

7. DESCRIPTIVE NOTES

8. SPONSORING/MONITORING/CONTRACTING/TASKING AGENCY Sponsoring Agency: Monitoring Agency: Contracting Agency : DRDC Toronto Tasking Agency:

9. ORIGINATORS DOCUMENT NO. 10. CONTRACT GRANT AND/OR 11. OTHER DOCUMENT NOS. PROJECT NO. Contract Report CR 2004-014 Thrust 16cb19; Contract No. W7711-027843/001/TOR

12. DOCUMENT RELEASABILITY

Unlimited distribution

13. DOCUMENT ANNOUNCEMENT

Unlimited announcement 14. ABSTRACT

(U) This project, “A Noise Dosimetry Study of Selected Military Trades at CFB Greenwood and CFB Halifax” is part of a larger study of risk factors being conducted by members of the Communications Group at DRDC Toronto. Dosimeters, individually worn sound level meters, were used for an entire workday by the 264 volunteer subjects who participated in the project. Twenty different trades were represented. An analysis of the data revealed that a significant number of volunteers were exposed to noise levels potentially capable of causing hearing damage.

(U) Le présent document, A Noise Dosimetry Strudy of Selected Military Trades at CFB Greenwood and CFB Halifax, fait partie d’une étude plus étendue de facteurs de risque effectuée par les membres du Groupe des communications de RDDC Toronto. Des sujets bénévoles, au nombre de 264, portaient un dosimètre – sonomètre personnel – pendant toute une journée de travail. Vingt métiers différents étaient représentés. Une analyse des données a révélé qu’un nombre important de volontaires étaient exposé à des niveaux de bruit potentiellement capables de nuire à l’ouïe.

15. KEYWORDS, DESCRIPTORS or IDENTIFIERS

(U) noise exposure; noise dosimetry