AMBIENT AIR MONITORING PROGRAM MUGGAH CREEK REMEDIATION PROJECT JANUARY 2003 SAMPLING EVENTS FINAL REPORT

Transcription

1 AMBIENT AIR MONITORING PROGRAM MUGGAH CREEK REMEDIATION PROJECT JANUARY 2003 SAMPLING EVENTS FINAL REPORT

2 AMBIENT AIR MONITORING PROGRAM MUGGAH CREEK REMEDIATION PROJECT JANUARY 2003 SAMPLING EVENTS FINAL REPORT SUBMITTED TO: NOVA SCOTIA DEPARTMENT OF TRANSPORTATION AND PUBLIC WORKS C/O CONESTOGA-ROVERS & ASSOCIATES 295 GEORGE STREET, SUITE 102 P.O. BOX 1234 SYDNEY, NOVA SCOTIA B1P 6J9 SUBMITTED BY: AMEC EARTH & ENVIRONMENTAL LIMITED 55 TOWNSEND STREET SYDNEY, NOVA SCOTIA B1P 5C6 TV21233 MAY 2003

3 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 TABLE OF CONTENTS Page 1.0 INTRODUCTION PROGRAM DESCRIPTION SUMMARY OF METHODS AND EQUIPMENT PM TSP and Metals PM 10 and Metals PAHs VOCs QA/QC SAMPLING FIELD OBSERVATIONS WEATHER PARAMETER MEASUREMENTS PROGRAM RESULTS PM 10, TSP AND METALS RESULTS PM PAH RESULTS VOC RESULTS PROGRAM QA/QC VOCs PAHs Metals YEAR TO DATE AVERAGES, MAXIMUMS AND MINIMUMS CONCLUSIONS REFERENCES LIST OF FIGURES FIGURE 1 Sampling Locations... 3 FIGURE 2 January 3 rd Wind Rose Diagram for PIDC Weather Station... 8 FIGURE 3 January 15 th Wind Rose Diagram for PIDC Weather Station... 9 FIGURE 4 January 27 th Wind Rose Diagram for PIDC Weather Station FIGURE 5 January 3 rd Wind Rose Diagram for Coke Ovens Weather Station FIGURE 6 January 15 th Wind Rose Diagram for Coke Ovens Weather Station FIGURE 7 January 27 th Wind Rose Diagram for Coke Ovens Weather Station TV21233 i

4 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 LIST OF TABLES Page TABLE 1 Summary of Sampling Locations and Parameters Analyzed... 2 TABLE 2 Summary of Metals Parameters Analyzed from Particulate Fractions... 4 TABLE 3 Summary of PAH Parameters Analyzed... 5 TABLE 4 Summary of VOC Parameters Analyzed... 5 TABLE 5 Summary of Field Observations... 6 TABLE 6 Summary of Weather Information... 7 TABLE 7 Summary of PM 10, TSP and Metals January 3 rd Event TABLE 8 Summary of PM 10, TSP and Metals January 15 th Event TABLE 9 Summary of PM 10, TSP and Metals January 27 th Event TABLE 10 Summary of PM 2.5 January 3 rd, 15 th and 27 th Events TABLE 11 Summary of PAH January 3 rd Event TABLE 12 Summary of PAH January 15 th Event TABLE 13 Summary of PAH January 27 th Event TABLE 14 Summary of VOC January 3 rd Event TABLE 15 Summary of VOC January 15 th Event TABLE 16 Summary of VOC January 27 th Event TABLE 17 Field Duplicate Analyses by PSC and EC, January 3 rd TABLE 18 Summary of Year to Date PM 10 /Metals TABLE 19 Summary of December 2002 and January 2003 PM TABLE 20 Summary of TSP/Metals July 31 st, 2002 to January TABLE 21 Summary of Year to Date PAH TABLE 22 Summary of Year to Date VOC LIST OF APPENDICES APPENDIX A Sampling Equipment Sketch and Procedure Description APPENDIX B Data Validation Report APPENDIX C Environment Canada VOC Duplicate TV21233 ii

5 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May INTRODUCTION This report provides a summary and interpretation of the Muggah Creek Remediation Project Ambient Air Monitoring Program results for the month of January In the fall of 2001, an expanded ambient air monitoring program (AAMP) was developed and implemented for the Sydney Muggah Creek Remediation Project. The AAMP was designed to monitor air quality within the Sydney airshed both prior to (background) and during the proposed remedial activities to be performed on the Sydney Tar Ponds and Coke Ovens site. The monitoring is being performed to determine whether there are any long-term and/or short-term effects on air quality from the proposed remedial activities, and also to assess impacts to the airshed from the Sydney Tar Ponds and Coke Ovens site during periods of inactivity. The program consists of sampling ambient air for total suspended particulate (TSP - 3 fixed locations), particulate matter less than 10 microns in diameter (PM 10-3 fixed locations), metal parameters (4 fixed locations), as well as polyaromatic hydrocarbon (PAH) parameters and volatile organic compound (VOC) parameters at 6 fixed locations throughout Sydney. In addition, a mobile station is available to be used at various locations, depending on the location of remedial activities. Particulate matter less than 2.5 microns in diameter (PM 2.5 ) was previously analyzed between the months of November 2001 and July 2002 on samples collected at 3 fixed locations, along with metals from the PM 2.5 fraction. PM 2.5 analysis was temporarily dropped from the AAMP because the laboratory detection limits were considered too high and did not meet the detection limit specified in the method for the analysis of PM 2.5. AMEC has sourced a laboratory with equipment that can achieve the applicable method detection limit. As a result, the PM 2.5 analysis at 3 fixed locations was reinstated in December 2002 to the program s sampling/analytical scope. Only a few metals were being detected from the PM 2.5 and, as a result, the metals analysis was permanently dropped from the AAMP. This report summarizes air monitoring results for three sampling events, performed on January 3 rd, 15 th and 27 th. Activities occurring on the Coke Ovens site included the preparation of the area surrounding the Domtar Tank for the installation of a building that will house the tank during remedial activities. TV

6 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May PROGRAM DESCRIPTION The AAMP consists of sampling at six fixed locations throughout Sydney. Table 1 provides a summary of the fixed sampling locations and parameters to be sampled at each location. Parameter TABLE 1 Summary of Sampling Locations and Parameters Analyzed Victoria Road STATION 1 Frederick STATION 2 Henry STATION 3 Kings Road STATION 4 Intercolonial STATION 5 PM 2.5 h h h DesBarres STATION 6 PM 10 h h h Metals in PM 10 fraction h h h TSP h h h Metals in TSP fraction h h h PAH h h h h h h VOC h h h h h h Refer to Figure 1 for the sampling locations. The sampling frequency for the program follows a 6-day National Air Pollution Surveillance (NAPS) schedule during periods when activity is occurring at the Tar Ponds and/or Coke Ovens site. The sampling during periods of non-activity is performed on a 12-day schedule falling on NAPS days. The sampling duration for each event is 24-hours (midnight to midnight). Sampling falling on NAPS days was performed on January 3 rd, 15 th and 27 th. Three VOC canisters were not analysed; a canister on January 3 rd at the Frederick location and the duplicate set for the DesBarres location on January 27 th. The reason for the January 3 rd failure is unknown and both the cantroller and canister have been sent back to the manufacturer for examination. It is suspected that the January 27 th duplicate set failed due to plugging caused by heavy rainfall (64.2 mm) on that day. On January 3 rd, the TSP unit at Frederick failed as a result of worn out brushes in the motor. It appears that this unit had been previously used on other projects and therefore, the amount of runtime on the unit was not known to AMEC. Consequently, the motor in the unit wore out before its next scheduled maintenance. On January 3 rd and 15 th, the PM 2.5 unit failed at the Kings Road location. The unit failed as a result of icing in the sampler inlet due to inclement weather. Weather information for the program during the month of January was obtained from the two project weather stations, one located at the former Public Information Display Centre (PIDC) site, off of Terminal Road, and the other at the southeast end of the Coke Ovens site. Additional meteorological data (humidity, precipitation, barometric pressure and fog) was acquired from the Environment Canada weather station located at the Sydney Airport. TV

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8 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May SUMMARY OF METHODS AND EQUIPMENT The field program consisted of sampling for PM 2.5 using low volume sampling equipment, PM 10, PAHs, TSP and metals, using high volume sampling equipment, and VOCs using stainless steel evacuated canisters. The following provides a summary of methods for sampling, parameters analyzed and equipment employed. Refer to Appendix A for a sketch of the equipment and a description of sampling procedures PM 2.5 Sampling for PM 2.5 was conducted in accordance with the United States Environmental Protection Agency (USEPA) Reference Method for the Determination of Fine Particulate Matter as PM 2.5 in the Atmosphere (40 CFR, Subchapter C, Part 50, Appendix L). Sampling was performed with the BGI PQ-200 PM 2.5 sampling system. The media used to capture PM 2.5 were 47 mm polytetrafluoroethylene (PTFE) teflon filters. Analysis was performed at Chester LabNet in Tigard, Oregon, USA TSP and Metals The sampling protocol for TSP was in accordance with the Environment Canada Method for the Measurement of Suspended Particulate in the Atmosphere (Environment Canada, 1973). All sampling was performed with Tisch High Volume samplers. Calibration of each sampler was completed using orifice resistance plates and a water manometer. Initial and final flow checks were performed on each instrument for the 24-hour sampling period. The media used to capture TSP and metals were quartz filters. Analyses were performed at the Environmental Services Laboratory (ESL) in Sydney. Refer to Table 2 for a list of metals parameters analyzed from the TSP fraction. TABLE 2 Summary of Metals Parameters Analyzed from Particulate Fractions Aluminum Boron Calcium Lithium Silver Uranium Magnesium Selenium Antimony Cadmium Copper Manganese Sodium Vanadium Potassium Mercury (1) Barium Chromium Iron Molybdenum Thallium Zinc Sulfur Beryllium Cobalt Lead Nickel Tin Strontium Arsenic Note: (1) Mercury is analyzed as only the particulate fraction PM 10 and Metals Sampling for PM 10 was performed in accordance with the USEPA Reference Method for the Determination of Particulate Matter as PM 10 in the Atmosphere (40 CFR, Part 50, Appendix M). All sampling was performed with either Graesby Anderson or Tisch High Volume samplers. Initial and final flow checks were performed during the 24-hour sampling period. The media used to capture PM 10 and metals were quartz filters. ESL performed the analyses. Refer to Table 2 for a list of metals parameters analyzed from the PM 10 fraction PAHs PAH compounds were sampled in accordance with the USEPA TO13A Method. All sampling was performed with either Graesby Anderson or Tisch High Volume samplers. Initial and final flow checks were performed on each sampler during the 24-hour sampling period. The media used to capture PAH compounds were glass-fibre filters with a polyurethane foam (PUF) TV

9 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 sorbent backup. ESL performed sample media preparation and analyses. Refer to Table 3 for a list of PAH parameters analyzed. TABLE 3 Summary of PAH Parameters Analyzed Naphthalene Fluorene Fluoranthene Chrysene Indeno(1,2,3-cd)pyrene Acenaphthylene Phenanthrene Pyrene Benzo Fluoranthene Dibenz(a,h)anthracene Acenaphthene Anthracene Benzo(a)anthracene Benzo(a)pyrene Benzo(g,h,i)perylene VOCs Sampling for VOCs was performed in accordance with the USEPA TO14A Method. An evacuated stainless steel canister was used to collect a sub-atmospheric (pressure) sample. A flow restrictive device (cantroller) was employed to acquire the samples over a 24-hour period. The evacuated canisters were transported to the Philip Service Corporation (PSC) analytical laboratory in Burlington, Ontario for analyses. Refer to Table 4 for the list of VOCs analyzed. TABLE 4 Summary of VOC Parameters Analyzed Dichlorodifluoromethane Chloroform 1,1,1-Trichloroethane Carbon tetrachloride 1,3-Dichlorobenzene Chloromethane 1,1-Dichloroethene 1,1,2-Trichloroethane Ethylene dibromide 1,4-Dichlorobenzene Halocarbon 114 cis-1,2-dichloroethene Toluene Ethylbenzene 1,2-Dichlorobenzene Vinyl chloride 1,1-Dichloroethane Benzene m&p-xylene 1,2,4-Trichlorobenzene Chloroethane 1,2-Dichloropropane cis-1,3-dichloropropene o-xylene Hexachlorobutadiene 1,2-Dichloroethane Dichloromethane trans-1,3-dichloropropene 1,3,5-Trimethylbenzene Chlorobenzene Bromomethane 1,1,2,2-Tetrachloroethane Trichloroethene 1,2,4-Trimethylbenzene Trichlorofluoromethane Tetrachloroethene Halocarbon QA/QC SAMPLING The January 3 rd QA/QC sampling consisted of obtaining duplicate samples for VOCs at the Henry location, PAHs at the Frederick location and PM 10 and metals at the Victoria Road location. The duplicate sample set for VOCs was forwarded to Environment Canada s laboratory for analysis after PSC analyzed the samples. The January 15 th QA/QC sampling consisted of obtaining field blanks for PAHs at the Frederick location, PM 10 and metals at the DesBarres location, TSP and metals at the Victoria Road location and PM 2.5 at the Intercolonial location. All QA/QC sample analyses were performed at PSC. The January 27 th QA/QC sampling consisted of obtaining duplicate samples for PAHs at the Frederick location and PM 10 and metals at the Victoria Road location. All QA/QC sample analyses were performed at PSC. 2.3 FIELD OBSERVATIONS The monitoring program was performed from midnight to midnight on January 3 rd, 15 th and 27 th. Table 5 provides a summary of field observations for each sampling day. TV

10 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 Sampling Event Date January 3 rd January 15 th January 27 th Observations TABLE 5 Summary of Field Observations Activity on the Coke Ovens site included the installation of an approach ramp near the Domtar Tank. Two fuel oil trucks were parked at a Welding Shop near the Henry location during the sampling event. Idling rail car engines in the CB & CNS rail yard on January 3 rd at 10 am. Liquid cargo rail cars were located across from the Intercolonial location. The rail cars were shunted-in overnight during the event. Truck traffic on the new SYSCO access road that extends to Highway 125. Idling rail car engines in the CB & CNS rail yard observed on January 15 th at 11 am. Tandem and trailer traffic on the new SYSCO access road observed on January 15 th at 1130 am. Activity on the Coke Ovens site included preparation work around the Domtar tank. 3 liquid cargo rail cars were located across from Intercolonial location. The rail cars were moved overnight during event. Moderate traffic on Kings Road on January 15 th at approximately 11 am Activity on the Coke Ovens site included preparation work around the Domtar tank. Coast Guard Vessel docked at the Government Wharf. Truck traffic on the new SYSCO access road that extends to Highway WEATHER PARAMETER MEASUREMENTS Weather information for the wind speed, wind direction, and temperature parameters were obtained from the project weather station located at the former PIDC site and from the project weather station situated at the Coke Ovens site. The PIDC project weather station is located south of the South Tar Pond, off of Terminal Road, and is approximately 900 metres from the southwest corner of the Coke Ovens site (Figure 1). The Coke Ovens project weather station is situated at the southeast perimeter of the Coke Ovens site approximately 625 metres to the east of the Victoria Road sampling location (Figure 1). Relative humidity, precipitation, barometric pressure, fog and snow cover were obtained from the Sydney Airport Environment Canada weather station. All measurements were recorded on an hourly basis. Table 6 provides a summary of weather measurements for each of the 24-hour sampling days for January TV

11 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 Wind Direction During Monitoring Period TABLE 6 Summary of Weather Information PIDC Project Weather Station % Frequency January 3 rd Coke Ovens Project Weather Station PIDC Project Weather Station % Frequency January 15 th Coke Ovens Project Weather Station PIDC Project Weather Station % Frequency January 27 th Coke Ovens Project Weather Station N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW Calm Average Wind speed (km/hr) [m/s] 16.9 [4.7] 26.8 [7.4] 12.1 [3.4] 23.6 [6.6] 30.7 [8.5] 42.7 [11.9] Average Temperature (ºC) Minimum Temperature (ºC) Maximum Temperature (ºC) ENVIRONMENT CANADA MONTHLY DATA Relative Humidity (%) Total Precipitation (mm) (rain (mm) /snow (cm)) (1) 0.0 (0.0 / 0.0) TR (2) (0.0 / TR) 64.2 (64.2 / 0.0) Barometric Pressure (kpa) Fog NO NO YES Snow Cover YES YES YES Notes: (1) Rain is reported in mm, snow in cm. (2) TR denotes trace amounts. Figures 2 to 7 provide graphical presentations of wind direction and speed in the form of wind roses inset on a plan view of the sampling locations for each sampling day. The wind roses provide information on wind frequency, direction and speed for each sampling day. The length of each bar for a direction indicates the percent of time the wind blows from that direction. The wind direction is defined as that from which the wind is blowing (i.e., a north wind comes from the north). Each hatch pattern within the wind rose bars represents the percentage of time for a velocity. A legend is included on each wind rose for interpretation. Winds were prevailing from the WNW direction on January 3 rd, WSW on January 15 th and SSE on January 27 th, at both the PIDC and Coke Ovens project weather station locations. The winds at the PIDC project weather station location were strongest on January 27 th with an average wind speed of 30.7 km/hr and weakest on January 15 th with an average wind speed of 12.1 km/hr. The winds at the Coke Ovens project weather station location were strongest on January 27 th with an average wind speed of 42.7 km/hr and weakest on January 15 th with an average wind speed of 23.6 km/hr. We note that the wind speed readings at the Coke Ovens project weather station were higher by 40-95% than the wind speed readings at the PIDC project weather station. Comparisons with wind speeds at the Sydney Airport Environment Canada weather station were made for the month of November The Airport data is more comparable to the PIDC weather data than to the Coke Ovens project weather data. Environment Canada is currently examining the equipment at the PIDC and Coke Ovens project weather stations to determine whether the variances are equipment related or not. TV

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18 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May PROGRAM RESULTS The following section provides a summary of PM 2.5, PM 10, TSP, metals, PAH and VOC results for the month of January. The tables in this section summarize only those values that were detected. Refer to Appendix B for a complete set of results contained in the Data Validation Report. A review of available Nova Scotia standards and guidelines indicate that Nova Scotia only provides an ambient air quality objective for one of the parameters, TSP. The province of Ontario does provide ambient air quality criteria (AAQC) for many of the program PAH, VOC and metal parameters and these have been included in the tables for this section. Currently, Nova Scotia does not have an objective for PM 10. Discussions with Environment Canada have determined that the use of criteria developed in other jurisdictions is acceptable. For the Sydney AAMP, a 24-hour criterion of 50 µg/m 3 for PM 10 has been applied, which is the criterion being used in Ontario and British Columbia. The monitoring locations at the perimeter of the Coke Ovens site are the exception, where a 24-hour criterion of 25 µg/m 3 for PM 10 has been applied during periods of activity at the site, as developed in the Interim Separation Zone criteria study (AGRA, 2000). Criteria for metals, PAHs and VOCs were also developed in the Interim Separation Zone study, to be applied around the perimeter of the Coke Ovens site during periods of activity at the Coke Ovens site. 3.1 PM 10, TSP AND METALS RESULTS Tables 7, 8 and 9 provide a summary of PM 10, TSP and metals results for the January 3 rd, 15 th and 27 th sampling events, respectively. Parameter Victoria Road PM 10 TABLE 7 Summary of PM 10, TSP and Metals January 3 rd Event (1) Victoria Road PM 10 Duplicate Frederick PM 10 DesBarres PM hour Guidelines Victoria Road TSP Henry TSP 24-Hour Criteria (3) PM (3) NA (2) NA NA TSP NA NA NA NA NA (4) Aluminum <0.1 U <0.1 U <0.1 U <0.1 U na (5) 0.1 <0.1 U na Chromium <0.001 U <0.001 U <0.001 U <0.001 U na <0.001 U 1.5 Calcium <0.4 U <0.4 U <0.4 U <0.4 U na 0.8 <0.3 U na Copper na Iron <0.1 U <0.06 U <0.1 UB <0.1 U na <0.3 UB <0.05 UB 4 Lead na Manganese <0.01 U <0.01 U <0.01 U <0.01 U na 0.01 <0.01 U 2.5 Sodium <1.6 UB <2.2 UB <0.9 UB <0.7 UB na <7.4 UB <1.9 UB na Vanadium <0.001 U <0.001 U <0.001 U <0.001 U na <0.001 U 2 Strontium <0.003 U <0.003 U <0.003 U <0.003 U na <0.002 U 120 Magnesium na na Arsenic na Notes : (1) Not detected values are reported at detection limit and are shown with a < symbol. (2) NA denotes not applicable. (3) Ontario MOE 24-hour Ambient Air Quality Criteria. (4) Nova Scotia Ambient Air Quality Objective for a 24-hour averaging period. (5) na denotes not available. U = Non-detected at the stated limit. UB = Non-detect with elevated reporting limit as a result of method blank contamination. TV

19 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 Parameter Victoria Road PM 10 TABLE 8 Summary of PM 10, TSP and Metals January 15 th Event (1) Frederick PM 10 DesBarres PM 10 DesBarres PM 10 Field Blank (mg/filter) 24-hour Guidelines Victoria Road TSP Victoria Road TSP Field Blank (mg/filter) Frederick TSP Henry TSP 24-Hour Criteria (3) PM <0.5 U 50 (3) NA (2) NA NA NA NA TSP NA NA NA NA NA 16.3 <0.5 U (4) Barium 0.02 <0.01 U <0.01 U <0.02 U na (5) 0.02 <0.02 U <0.01 U Copper <0.02 U na 0.83 <0.02 U Iron <0.1 U <0.1 U <0.1 U <0.1 U na <0.1 U <0.1 U <0.05 U Lead <0.002 U na <0.002 U Sodium 0.3 <0.4 U <0.3 U <0.6 U na 0.9 <0.6 U na Vanadium <0.001 U <0.001 U <0.001 U <0.002 U na <0.001 U <0.002 U <0.001 U Arsenic <0.002 U na <0.002 U Notes: (1) Not detected values are reported at detection limit and are shown with a < symbol. (2) NA denotes not applicable. (3) Ontario MOE 24-hour Ambient Air Quality Criteria. (4) Nova Scotia Ambient Air Quality Objective for a 24-hour averaging period. (5) na denotes not available. U = Non-detected at the stated limit. Parameter Victoria Road PM 10 TABLE 9 Summary of PM 10, TSP and Metals January 27 th Event (1) Victoria Road PM 10 Duplicate Frederick PM 10 DesBarres PM hour Guidelines Victoria Road TSP Frederick TSP Henry TSP 24-Hour Criteria (3) PM BH 33.3 BH 20.1 BH 36.1 BH 50 (3) NA (2) NA NA NA TSP NA NA NA NA NA R (4) Aluminum <0.1 U <0.1 U <0.1 U <0.1 U na (5) <0.1 U na Barium na Chromium na Calcium na na Copper na Iron 0.10 <0.1 U 0.1 <0.1 U na Lead na Manganese <0.01 U na <0.01 U 2.5 Nickel na Sodium na na Tin <0.01 U <0.01 U <0.01 U <0.01 U na <0.01 U 0.02 <0.01 U 10 Vanadium <0.001 U <0.001 U <0.001 U <0.001 U na <0.001 U <0.001 U 2 Zinc <0.1 U <0.1 U <0.1 U <0.1 U na Strontium na Magnesium na na Arsenic <0.001 U na Notes: (1) Not detected values are reported at detection limit and are shown with a < symbol. (2) NA denotes not applicable. (3) Ontario MOE 24-hour Ambient Air Quality Criteria. (4) Nova Scotia Ambient Air Quality Objective for a 24-hour averaging period. (5) na denotes not available. U = Non-detected at the stated limit. R = Rejected. Individual metals exceed reported TSP. BH = AMEC and ESL believe potential biased high. As a result of extreme precipitation, the filters may have been saturated and may not have completely dessicated in the method-required time period. Nova Scotia provides a 24-hour objective of 120 µg/m 3 for the TSP parameter and the Ontario Ministry of Environment (MOE) provides a 24-hour AAQC of 50 µg/m 3 for the PM 10 parameter. A comparison of the TSP results with the Nova Scotia objective and the PM 10 results with MOE AAQC indicates there were no exceedances for these parameters during the month of January. A comparison of metals results for PM 10 to regulatory criteria could not be performed since there are currently no regulations or guidelines for Nova Scotia, the rest of Canada nor the United States for metals that are sampled from the PM 10 fraction. There were no exceedances to available metals AAQC for the Victoria Road, Frederick and Henry TSP samples. TV

20 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 It should be noted that either the January 27 th PM 10 or TSP results for the Victoria Road Location are considered anomalous due to the fact that the PM 10 results are higher than the TSP result for the same location. for TSP should be equal to or greater than PM 10 for samples taken at the same location since particulate contained in the PM 10 size range are a fraction of TSP. A review of the operation data for the TSP and PM 10 units indicated that they appeared to operate properly, and discussions with the analytical laboratory indicates that they could not find any errors in their analysis. As a result, the PM 10 values are considered potentially biased high. A plausible explanation is that the filters were not dessicated enough in consideration of the heavy rainfall that day. ESL was not able to verify this possibility. The January 27 th TSP result for Frederick has been rejected because the total mass for the metals reported exceeded the TSP gravimetric result PM 2.5 Table 10 provides a summary of PM 2.5 results for the January 3 rd, 15 th and 27 th events. Parameter Henry PM 2.5 TABLE 10 Summary of PM 2.5 January 3 rd, 15 th and 27 th Events January 3 rd January 15 th January 27 th Intercolonial PM 2.5 Henry PM 2.5 Intercolonial PM 2.5 Intercolonial PM 2.5 Field Blank (mg/filter) Henry PM 2.5 Kings Road PM 2.5 Intercolonial PM hour Standard PM (1) Notes: (1) CCME 24-hour Canada Wide Standard. The Canadian Council of the Ministers of the Environment (CCME) provides a Canada wide Standard (CWS) of 30 µg/m 3 for the PM 2.5 parameter. A comparison of the PM 2.5 results with the CWS indicates there were no exceedances during the month of January. 3.2 PAH RESULTS Tables 11, 12 and 13 provide a summary of PAH results for the January 3 rd, 15 th and 27 th sampling events, respectively. TV

21 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 Parameter Victoria Road Result TABLE 11 Summary of PAH January 3 rd Event (1) Frederick Result Frederick Duplicate Result Henry Result Kings Road Result Intercolonial Result DesBarres Result Ontario Ambient Air Quality 24-hour Criteria Naphthalene Acenaphthylene na (2) Acenaphthene na Fluorene na Phenanthrene na Anthracene <0.13 U na Fluoranthene na Pyrene na Benzo(a)anthracene <0.13 U na Chrysene na Benzo Fluoranthene <0.3 U na Benzo(a)pyrene <0.13 U Indeno(1,2,3-cd)pyrene <0.13 U na Dibenz(a,h)anthracene <0.13 U <0.13 U <0.13 U <0.13 U <0.13 U <0.12 U <0.13 U na Benzo(g,h,i)perylene <0.13 U na Total PAH (3) na Notes: (1) not detected values are reported at detection limit and are shown with a < symbol. (2) na denotes not available. (3) Total PAH is the sum of all reported values, including PAHs with values reported as non-detect, using values at half the detection limit. U = Non-detected at the stated limit Parameter Victoria Road Result TABLE 12 Summary of PAH January 15 th Event (1) Frederick Result Frederick Field Blank Result (ug/puf) Henry Result Kings Road Result Intercolonial Result DesBarres Result Ontario Ambient Air Quality 24-hour Criteria Naphthalene JS Acenaphthylene <0.05 U JS na (2) Acenaphthene <0.05 U JS na Fluorene <0.05 U JS na Phenanthrene <0.05 U JS na Anthracene <0.05 U JS na Fluoranthene <0.05 U JS na Pyrene <0.05 U JS na Benzo(a)anthracene <0.05 U JS na Chrysene <0.05 U JS na Benzo Fluoranthene <0.1 U JS na Benzo(a)pyrene <0.05 U JS 1.1 Indeno(1,2,3-cd)pyrene <0.05 U JS na Dibenz(a,h)anthracene <0.13 U <0.12 U <0.05 U <0.13 U <0.13 U <0.12 U <0.13 U na Benzo(g,h,i)perylene <0.05 U JS na Total PAH (3) NA (4) na Notes: (1) not detected values are reported at detection limit and are shown with a < symbol. (2) na denotes not available. (3) Total PAH is the sum of all reported values, including PAHs with values reported as non-detect, using values at half the detection limit. (4) NA denotes not applicable. U = Non-detected at the stated reporting limit. JS = Estimated value with potential low bias; recovery of surrogate < 60% TV

22 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 Parameter Victoria Road Result TABLE 13 Summary of PAH January 27 th Event (1) Frederick Result Frederick Duplicate Result Henry Result Kings Road Result Intercolonial Result DesBarres Result Ontario Ambient Air Quality 24-hour Criteria Naphthalene 0.47 JM 0.54 JS,JM 0.91 JM 0.46 JM 0.22 JM 0.20 JM 0.41 JM Acenaphthylene JS na (2) Acenaphthene JS <0.14 U na Fluorene JS na Phenanthrene JS na Anthracene JS na Fluoranthene JS na Pyrene JS na Benzo(a)anthracene 0.18 <0.13 U <0.13 U <0.14 U <0.14 U <0.12 U <0.14 U na Chrysene 0.18 <0.13 U <0.13 U <0.14 U <0.14 U <0.12 U <0.14 U na Benzo Fluoranthene 0.44 <0.3 U <0.2 U <0.3 U <0.3 U <0.2 U <0.3 U na Benzo(a)pyrene 0.23 <0.13 U <0.13 U <0.14 U <0.14 U <0.12 U <0.14 U 1.1 Indeno(1,2,3-cd)pyrene 0.31 <0.13 U <0.13 U <0.14 U <0.14 U <0.12 U <0.14 U na Dibenz(a,h)anthracene 0.29 <0.13 U <0.13 U <0.14 U <0.14 U <0.12 U <0.14 U na Benzo(g,h,i)perylene 0.31 <0.13 U <0.13 U <0.14 U <0.14 U <0.12 U <0.14 U na Total PAH (3) na Notes: (1) not detected values are reported at detection limit and are shown with a < symbol. (2) na denotes not available. (3) Total PAH is the sum of all reported values, including PAHs with values reported as non-detect, using values at half the detection limit. U = Non-detected at the stated reporting limit. JM = Estimated value; matrix spike analysis indicates potential low bias. JS = Estimated value; recovery of surrogate indicates potential low bias. All results for naphthalene and benzo(a)pyrene were below the Ontario Ministry of the Environment 24-hour criteria. 3.3 VOC RESULTS Tables 14, 15 and 16 provide a summary of VOC results for the January 3 rd, 15 th and 27 th sampling events. A VOC duplicate sample was collected on January 3 rd at the Henry location and this duplicate set of samples was forwarded to Environment Canada (EC) for further analysis. Parameter TABLE 14 Summary of VOC January 3 rd Event (1) MDL Victoria Road Henry Henry Duplicate Kings Road Intercolonial DesBarres Ontario Ambient Air Quality 24-hour Criteria Dichlorodifluoromethane JC 1.70 JC 1.87 JC 3.15 JC,JP 2.05 JC 1.80 JC 500,000 Trichlorofluoromethane 0.79 <1.35 U <1.80 U <1.80 U 1.12 JC,JP 1.18 JC 1.12 JC 6,000 Dichloromethane 0.76 <2.26 UB <3.8 UB <8.7 UB <4.9 UB <5.2 UB <2.54 UB 1,765 1,1,1-Trichloroethane JC JC <0.76 U 4.53 <0.76 U 115,000 Toluene JC 1.39 JC <1.13 U 2.34 JC,JP 2.30 JC 0.57 JC 2,000 Benzene JC 2.78 JC 2.49 JC 1.12 JC,JP 1.41 JC 4.8 na (2) Trichloroethene 0.91 <1.56 U 2.74 JC 2.36 JC <0.91 U 2.42 JC <0.91 U 28,000 Notes: (1) not detected values are reported at detection limit and are shown with a < symbol (2) na denotes not available MDL denotes method detection limits U = Non-detected at the stated limit. UB = Non-detected with elevated reporting limit as a result of background laboratory and/or canister contamination. JC = Estimated value, measured at less than ½ the low calibration standard. JP = Estimated value, canister at ambient pressure at end of sampling period and therefore the sampling period duration is estimated. TV

23 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 Parameter MDL TABLE 15 Summary of VOC January 15 th Event (1) Victoria Road Frederick Henry Kings Road Intercolonial DesBarres Ontario Ambient Air Quality 24-hour Criteria Dichlorodifluoromethane JC,JP 0.71 JC 0.71 JC,JP <0.71 U 0.81 JC,JP 0.74 JC,JP 500,000 Dichloromethane 0.76 <0.80 UB <0.76 U <0.76 U <1.18 UB <0.76 U <1.84 UB 1,765 Toluene 0.49 <0.49 U <0.49 U 0.64 JC,JP <0.49 U <0.49 U <0.49 U 2,000 Benzene 0.58 <0.58 U <0.58 U 0.77 JC,JP <0.58 U <0.58 U 0.58 JC,JP na (2) Notes: Parameter (1) not detected values are reported at detection limit and are shown with a < symbol (2) na denotes not available MDL denotes method detection limits U = Non-detected at the stated limit. UB = Non-detected with elevated reporting limit as a result of background laboratory and/or canister contamination. JC = Estimated value, measured at less than ½ the low calibration standard. JP = Estimated value, canister at ambient pressure at end of sampling period and therefore the sampling period duration is estimated. TABLE 16 Summary of VOC January 27 th Event (1) MDL Victoria Road Frederick Henry Kings Road Intercolonial Ontario Ambient Air Quality 24-hour Criteria Dichloromethane 0.76 <66 UB <97 UB <49 UB <30.2 UB <20.8 UB 1,765 Benzene 0.58 <1.50 U 6.4 <1.28 U 1.31 JC <0.93 U na (2) Trichloroethene 0.91 <2.36 U <7.0 U <1.99 U 1.72 JC <1.45 U 28,000 1,2,4-Trimethylbenzene 1.23 <3.20 U <9.3 U 2.90 JC <2.11 U <1.97 U 1,000 Notes: (1) not detected values are reported at detection limit and are shown with a < symbol (2) na denotes not available MDL denotes method detection limits U = Non-detected at the stated limit. UB = Non-detected with elevated reporting limit as a result of background laboratory and/or canister contamination. JC = Estimated value, measured at less than ½ the low calibration standard. Currently, there are no ambient air regulations or guidelines for Nova Scotia covering the VOC parameters. The Province of Ontario provides guidelines for most of the parameters identified in Tables 14, 15 and 16 and these guidelines have been included for comparison with the measured concentrations. A review of results compared to the Ontario AAQC indicates that all results are below the guideline values. 3.4 PROGRAM QA/QC Refer to Appendix B for a copy of the January Data Validation Report. The data generated for this program are supported by quality assurance/quality control measures and can be relied upon for program purposes. Accuracy, precision and completeness met or exceeded program objectives for most analyses. The uncertainties in measurements that exist in the data set for VOCs and metals are primarily reflections of the low levels of compounds present in the ambient air. VOCs and metals, when detected, were essentially just above the laboratory method detection limit, and well below the referenced guidelines. With very limited exceptions, the data, taking into consideration the qualifications applied from validation, may be used with confidence for air quality characterization. The text for the January Data Validation Report details the reasons for all qualifications to data. Quantitative results may be qualified as estimated for a variety of reasons including: measurements below the demonstrated linear range of the instrument; high or low recoveries of surrogate compounds or matrix spike compounds (samples to which target compounds have been added); canister flow uncertainties; and changes in the pressure of a canister between the end of the sampling event and receipt at the lab. The bottom line is that the identification is TV

24 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 reliable but the measured concentration has a degree of uncertainty to it. When possible, the text provided limits to this uncertainty; for example, if the surrogate recovery is low, the sample results are likely low to a comparable degree and low surrogate recovery probably indicates that the measured result represents only a portion of the actual air concentration. In many cases, however, it is not possible to establish clear limits for the uncertainty. The sample specific reasons for data qualification are summarized in the footnotes of the tables in Sections to and detailed in Appendix B. The following provides a summary of the data validation findings for the VOC, PAH and metals parameters VOCs Most volatiles detected were at concentrations less than one half the low calibration standard and are qualified as estimated (JC) since the linearity of the instrument response cannot be assumed. for dichloromethane (methylene chloride) have been qualified as non-detected with elevated reporting limits as a result of laboratory background (UB). Trichloroethene in the January 3 rd sample from Intercolonial was qualified as non-detected as a result of a trace (below method requirement) amount detected in the canister certification analysis. Five samples were at ambient pressure upon receipt at the laboratory for the January 15 th event. should be considered as estimates of the 24-hour average concentrations since the actual duration of sampling cannot be established (JP). Table 17 presents data for the replicate analyses of field duplicate samples by PSC and EC collected on January 3 rd at the Henry location. TABLE 17 Field Duplicate Analyses by PSC and EC, January 3 rd PSC EC Henry Henry RPD, Component Henry RPD Henry RPD Field Duplicate Field Duplicate PSC/EC PSC EC ppbv ppbv ppbv ppbv Dichlorodifluoromethane 0.48JC 0.53JC 9% % 41% 34% 1,1,1-Trichloroethane JC 50% % 41% 39% Toluene 0.37JC <0.30U NA (1) % 47% NA Benzene 0.87JC 0.78JC 11% % 24% 8% Trichloroethylene 0.51JC 0.44JC 15% % 20% 15% Notes: (1) NA denotes not applicable. JC = Estimated value; measured at less than 1/2 the low calibration standard. U = Non-detected at the stated limit. RPD = relative percent difference. Most analytes present were below ½ the low calibration standard at PSC and are qualified as estimated. Agreement between PSC and EC was acceptable, with all measurements demonstrating relative percent differences at 50% or less between the two laboratories PAHs Naphthalene was present in the method blank associated with the January 3 rd samples, as well as the field blank and method blank associated with the January 15 th samples. Since the level of naphthalene in that sample was greater than 10 times that in the blanks, all naphthalene data TV

25 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 have been accepted as reported. The matrix spike for the January 27 th had a low recovery for the naphthalene. The data associated with this matrix spike analysis was qualified as estimated with a potential low bias (JM). for the DesBarres sample on January 15 th and the Frederick sample on January 27 th are qualified as estimated with potential low bias as a result of low surrogate recoveries (JS) Metals The Method Blanks and Field Blanks for the PM 10 and TSP samples contained trace levels of one or more metals; data were qualified accordingly. TSP and PM 10 results for the January 27 th samples demonstrated inconsistencies. for TSP in the Frederick sample have been rejected because the total mass for the metals reported exceeded the TSP gravimetric result. The PM 10 results for all three locations may be biased high due to the possibility that the filters had not dessicated sufficiently, due to being saturated as a result of heavy rainfall. TV

26 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May YEAR TO DATE AVERAGES, MAXIMUMS AND MINIMUMS This section provides a summary, including running averages, maximum and minimums, of the last 12 months of program data (February 2002 to January 2003). Refer to Tables 18 to 22 for a summary of the, PM 10 /metals, PAH and VOC for the February 2002 to January 2003 time period. The summary for the PM 2.5 includes sampling performed for the time period of December 2002 and January TSP and metals results summarized for the time period from July 31 st, 2002 until the end of January 2003 are contained in Table 20. It should be noted that averages were not calculated for sample sets where all results were reported as below the method detection limit. For sample sets where at least one value in the sample set is reported as above the method detection limit, the values below the method detection limit are used in the calculation of averages by inputting values at half the reported method detection limit. In some instances there is an average value reported when the maximum is reported as below the method detection limit. The reason is that there was at least one value reported in the data set as being detected and the value(s) happens to be below the maximum reported detection limit on the tables. Parameter Average TABLE 18 Summary of Year to Date PM 10 /Metals (1) Victoria Road Frederick DesBarres Minimum Maximum Minimum Maximum Minimum Maximum Average Average Value Value (µg/m 3 (µg/m 3 Value Value ) ) (µg/m 3 (µg/m 3 Value Value ) ) PM Aluminum 0.1 < < < Antimony < < (2) <0.001 <0.001 Barium 0.01 < < < Beryllium -- <0.001 < <0.001 < <0.001 <0.001 Boron -- <0.1 < <0.1 < <0.1 <0.1 Cadmium -- <0.001 < <0.001 < <0.001 <0.001 Chromium < (3) <0.001 < (3) <0.001 <0.004 Cobalt < (3) <0.001 < < Calcium 0.3 < < < Copper 0.04 < < < Iron 0.1 < < < Lead < < < Lithium (3) <0.001 < (3) <0.001 < <0.001 <0.036 Manganese 0.01 < < < Molybdenum -- <0.01 < <0.01 < <0.01 <0.01 Nickel (3) <0.003 < (3) <0.003 < (3) <0.003 <0.079 Silver < < < Sodium 0.5 < < (3) <0.3 <4.0 Thallium -- <0.001 < <0.001 < <0.001 <0.001 Tin -- <0.01 < <0.01 < <0.01 <0.01 Uranium -- < < < < < <0.001 Vanadium < < < Zinc -- <0.1 < < <0.1 <0.1 Strontium < < < Magnesium 0.1 < < < Potassium -- <0.3 < (3) <0.3 < < Sulphur -- <2.0 < <1.9 < < Arsenic < < < Selenium < < < Mercury -- < < < < < < Notes: (1) not detected values are reported at detection limit and are shown with a < symbol. (2) -- not applicable. (3) An average value has been reported because there was at least one detected value below the maximum method detection limit during the reporting period. TV

27 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 Parameter Average TABLE 19 Summary of December 2002 and January 2003 PM 2.5 (1) Henry Kings Road Intercolonial Minimum Value Maximum Value Average Minimum Value Maximum Value Average Minimum Value Maximum Value PM Notes: (1) Average, minimum and maximum are calculated using results from December 2002 and January Parameter TABLE 20 Summary of TSP/Metals July 31 st, 2002 to January 2003 (1) Average Victoria Road Frederick Henry Minimum Maximum Minimum Maximum Minimum Average Average Value Value (µg/m 3 (µg/m 3 Value Value ) ) (µg/m 3 (µg/m 3 Value ) ) Maximum Value TSP Aluminum 0.1 < < < Antimony -- (2) <0.001 < <0.001 < <0.001 <0.001 Barium 0.01 < < < Beryllium -- <0.001 < <0.001 < <0.001 <0.001 Boron -- <0.05 < <0.05 < <0.05 <0.1 Cadmium -- <0.001 < <0.001 < < Chromium < (3) <0.001 < (3) <0.001 <0.006 Cobalt (3) <0.001 < (3) <0.001 < < Calcium 0.5 < < < Copper < Iron 0.1 (3) <0.1 < < < Lead Lithium -- <0.001 < (3) <0.001 < <0.001 <0.035 Manganese 0.01 < < < Molybdenum -- <0.01 < <0.01 < <0.01 <0.01 Nickel < (3) <0.002 < (3) <0.002 <0.077 Silver -- <0.001 < <0.001 < <0.001 <0.001 Sodium 2.0 (3) <0.7 < < (3) <0.3 <6.1 Thallium -- <0.001 < <0.001 < < Tin -- <0.01 < < <0.01 <0.01 Uranium -- < < < < < <0.001 Vanadium < < < Zinc 0.05 (3) <0.05 < < < Strontium < < < Magnesium 0.3 < < < Potassium -- <0.3 < (3) <0.3 < <0.3 <0.9 Sulphur -- <2.0 < < (3) <1.7 <2.3 Arsenic < < < Selenium -- <0.001 < < < Mercury -- < < < < < < Notes: (1) not detected values are reported at detection limit and are shown with a < symbol. (2) -- not applicable. (3) An average value has been reported because there was at least one detected value below the maximum method detection limit during the reporting period. Sampling for TSP/metals started on July 31 st, TV

28 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 Parameter Average TABLE 21 Summary of Year to Date PAH (1) Victoria Road Frederick Henry Kings Road Intercolonial DesBarres Minimum Maximum Minimum Maximum Minimum Maximum Minimum Maximum Minimum Maximum Minimum Maximum Average Average Average Average Average Value Value (ng/m 3 (ng/m 3 Value Value ) ) (ng/m 3 (ng/m 3 Value Value ) ) (ng/m 3 (ng/m 3 Value Value ) ) (ng/m 3 (ng/m 3 Value Value ) ) (ng/m 3 (ng/m 3 Value Value ) ) Naphthalene 1.8 < < < < < < Acenaphthylene 0.8 < < < < < < Acenaphthene 0.4 < < < < Fluorene Phenanthrene Anthracene < < < Fluoranthene < Pyrene < < Benzo(a)anthracene 0.2 < < < < < < Chrysene 0.22 < < < < < < Benzo Fluoranthene 0.6 < < < < < < Benzo(a)pyrene 0.13 < < < < < < Indeno(1,2,3-cd)pyrene 0.14 < < < < < < Dibenzo(a,h)anthracene 0.10 < (3) <0.04 < <0.06 < <0.06 < <0.06 < < Benzo(g,h,i)perylene 0.16 < < < < < < Total PAH (2) Notes: (1) not detected values are reported at detection limit and are shown with a < symbol. (2) Total PAH is the sum of all reported values, including PAHs with values reported as non-detect, using values at half the detection limit. (3) -- denotes not applicable. TV

29 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May 2003 TABLE 22 Summary of Year to Date VOC (1) Victoria Road Frederick Henry Kings Road Intercolonial DesBarres Parameter Average Minimum Value Maximum Value Average Minimum Value Maximum Value Average Minimum Value Maximum Value Average Minimum Value Maximum Value Average Minimum Value Maximum Value Average Minimum Value Maximum Value Dichlorodifluoromethane 1.57 < (3) <0.7 < < < (3) <0.71 < (3) <0.7 <4.6 Chloromethane 0.49 (3) <0.60 < (3) <0.60 < < (3) <0.60 < (3) <0.6 < (3) <0.6 <3.7 Halocarbon <0.92 < <1.13 < <1.03 < <0.92 < <0.92 < <1.1 <7.7 Vinyl chloride -- <0.20 < <0.20 < <0.20 < <0.20 < <0.20 < <0.2 <2.8 Chloroethane -- <0.24 < <0.24 < (3) <0.24 < (3) <0.24 < < (3) <0.24 <2.51 1,2-Dichloroethane -- <0.61 < <0.61 < <0.61 < (3) <0.61 < <0.61 < <0.61 <3.84 Bromomethane -- <0.35 < <0.35 < <0.35 < <0.35 < (3) <0.35 < <0.3 <4.3 Trichlorofluoromethane 1.35 < (3) <0.8 < < < < (3) <0.8 <4.9 1,1-Dichloroethene -- <0.75 < (3) <0.75 < <0.75 < <0.75 < < <0.8 <4.8 cis-1,1-dichloroethene -- <0.56 < <0.56 < <0.56 < <0.56 < <0.56 < <0.6 <4.8 1,1-Dichloroethane -- <0.69 < <0.69 < <0.69 < <0.69 < <0.69 < <0.7 <6.5 1,2-Dichloropropane -- <0.69 < <0.69 < <0.69 < <0.69 < <0.69 < <0.7 <5.5 Dichloromethane -- <1 <132 5 <1 <97 5 (3) <1 <52 8 (3) <1 <170 6 (3) <1 <141 8 (3) <1 <103 Chloroform -- <0.73 < <0.73 < <0.73 < <0.73 < <0.73 < <0.73 <4.64 1,1,2,2-Tetrachloroethane -- <1.17 < <1.49 < <1.31 < <1.17 < <1.2 < <1.5 <11.0 Halocarbon (3) <0.74 < (3) <0.95 < (3) <0.85 < < ,1,1-Trichloroethane < < < < < ,1,2-Trichloroethane -- <0.64 < <0.64 < <0.65 < <0.64 < <0.64 < <0.64 <5.18 Toluene 5.3 < < < < < Benzene 1.9 < < < < < < cis-1,2-dichloropropene -- <0.64 < <0.64 < <0.64 < <0.64 < <0.64 < <0.6 <5.0 trans-1,3-dichloropropene -- <0.50 < <0.50 < <0.50 < <0.50 < <0.50 < <0.5 <5.0 Trichloroethene 6.74 < < < < < < Tetrachloroethene -- <0.81 < <1.02 < <0.92 < <0.81 < <0.81 < <1.02 <6.44 Carbon tetrachloride 0.70 (3) <0.81 < <0.94 < <0.92 < <0.81 < <0.81 < <0.94 <5.98 Ethylene dibromide -- <0.81 < <1.03 < <0.92 < <0.81 < <0.81 < <1.0 <8.5 Ethylbenzene 0.8 < (3) <0.7 < < < (3) <0.7 < (3) <0.7 <5.6 m&p-xylene 2.6 < < < < < < o-xylene 0.9 < (3) <0.8 < < < (3) <0.8 < (3) <0.8 <5.6 1,3,5-Trimethylbenzene 1.15 < (3) <1.28 < (3) <1.28 < (3) <1.28 < <1.3 < < ,2,4-Trimethylbenzene 2.0 < (3) <1.2 < < < < < ,3-Dichlorobenzene -- <0.90 < (3) <0.75 < <0.90 < <0.90 < <0.9 < <0.9 <9.6 1,4-Dichlorobenzene -- <0.90 < <0.90 < (3) <0.90 < <0.90 < <0.9 < <0.9 <10.8 1,2-Dichlorobenzene -- <0.90 < <0.90 < <0.90 < <0.90 < <0.9 < <0.9 <10.8 1,2,4-Trichlorobenzene < (3) <1.06 < (3) <0.95 < <0.8 < <0.8 < <1.1 <18.6 Hexachlorobutadiene -- <1.77 < <2.23 < <1.98 < <1.8 < <1.8 < <2.2 <22.4 Chlorobenzene 0.53 (3) <0.69 < (3) <0.69 < (3) <0.69 < (3) <0.69 < (3) <0.69 < (3) <0.69 <4.37 Notes: (1) not detected values are reported at detection limit and are shown with a < symbol. (2) -- not applicable. (3) An average value has been reported because there was at least one detected value below the maximum method detection limit during the reporting period. TV

30 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May CONCLUSIONS Fixed station AAMP results for January 2003 were compared to available guidelines and standards that included the Nova Scotia Ambient Air Objective for TSP, the CWS for PM 2.5, and the Ontario MOE AAQC for many of the remaining parameters. There were no exceedances to available 24-hour guidelines at the fixed sampling locations for the PM 2.5, PM 10, PAH, TSP, metals and VOC parameters during the month of January. TV

31 January 2003 Monthly Report Muggah Creek Remediation Project, Sydney, Nova Scotia May REFERENCES AGRA Earth & Environmental Limited. Development of Interim Separation Zones, Former Coke Ovens site, Sydney, Nova Scotia, Environment Canada. Standard Reference Method for the Measurement of Suspended Particulate in the Atmosphere (High Volume Method). Report EPS 1-AP-73-2, January, United States Environmental Protection Agency. Compendium Method TO13 Determination of Benzo(a)Pyrene and Other Polynuclear Aromatic Hydrocarbons (PAHs) in Ambient Air Using Gas Chromatographic and High Performance Liquid Chromatographic Analysis Revision 1.0. New Jersey: Noyes Data Corporation, June United States Environmental Protection Agency. Compendium Method TO-14A Determination of Volatile Organic Compound (VOC) in Ambient Air Using Specially Prepared Canisters with Subsequent Analysis by Gas Chromatography. Cincinnati, OH: Center for Environmental Research Information, January United States Environmental Protection Agency. Part II: National Ambient Air Quality Standards for Particulate Matter; Final Rule, 40 CFR part 50, Federal Register, Vol. 62, No. 138, United States Environmental Protection Agency. Reference Method for the Determination of Fine Particulate Matter as PM 2.5 in the Atmosphere, 40 CFR, Subchapter C, Part 50 Appendix B, July United States Environmental Protection Agency. Reference Method for the Determination of Particulate Matter as PM 10 in the Atmosphere, 40 CFR, Subchapter C, Part 50, Appendix M, July TV

32 APPENDIX A Sampling Equipment and Procedure Description

33 PM 10 Units Air sampling for PM 10 is performed with a high volume sampler. Refer to Figure A1 for a sketch of the PM 10 unit. The sampler consists of a size selective inlet, a filter holder, an air mover, a flow controller, and a timer. The unit works by drawing air into a size selective inlet at a flow rate, which is typically 40 ft 3 /min. Particles with aerodynamic diameters less than the cut point (less than 10 microns in diameter) are collected by the filter. The mass of the particles is determined by the difference in filter weights prior to and after sampling. The concentration of suspended particulate matter in the designated size range is calculated by dividing the weight gain of the filter by the volume of air sampled. Figure A1 The main steps involved in sampling include the following: 1. Filter preparation by the Environmental Services Laboratory (ESL). 2. Installing the filter in the high volume sampler. 3. Setting the samplers timer so that it will turn on at midnight of the day of setup. Checking the flow for a five-minute period to ensure the high volume sampler is operating properly. Inspecting the filter during the five-minute operation to ensure that the filter is installed correctly and is not damaged. 4. Performing periodic flow checks during the 24 hour sampling period to ensure the sampler is operating properly. 5. The sampler shuts off automatically after 24 hours (midnight) and AMEC collects the filter the following morning and transports it to ESL for PM 10 and metals analysis. AMEC uses the field pressure measurements and laboratory results to calculate a concentration, which is reported in the monthly reports.