Document JVnkYDmVejjkLKZwnzng5rn2

FILE NAME Manville JMA DATE 1974 June 4 DOC JMA314 DOCUMENT DESCRIPTION Report- Quebec Asbestos Mining Association - Ambient Air Sampling of Asbestos in the City wow See LL ee ee QUEBEC ASBESTOS MINING ASSOCIATION as 5 " Thetford Mines July 4th 1974 Mr. Lionel Piuze Chairman Environmental Control Committee Quebec Asbestos Mining Association / Lake Asbestos of Quebec Limited Black Lake Que Re Ambient Air Survey Dear Sir Please find enclosed reports following the ambient air sampling conducted during the month of June in the Cities of Asbestos Thetford Mines Black Lake and the Towns of Robertsonville and Tring- Jonction You will notice that the average fiber concentra- tions for each City and each Town found in 1974 were about the same than the average fiber concentrations found in 1973 except for the Town of Jonction Contrary to the other Cities and Town the ambient air sampling conducted in the Town of Robertsonville was made on a rainy day However the results obtained were about the same as the ambient air sampling conducted in September 1973 when the day was clear and sun- ny Yours very truly Marine Maurice Lachance Industrial Hygiene Engineer , QUEBEC ASBESTOS MINING ASSOCIATION AMBIENT AIR SAMPLING IN THE CITY OF ASBESTOS JUNE 4th 1974 wt Maurice Lachance Industrial Hygiene Engineer Thetford Mines Que CITY OF ASBESTOS NOTE This report contains only asbestos fibers over five 5 microns in length We realized in previous survey reports that counting fi- bers shorter than five 5 microns with the magnification used with the Phase Contrast method is very difficult and cannot be counted with accuracy The count of fibers over five 5 microns in length is the only one counted for this survey The sampling time for all Membrane Filters collected was for a duration of 5 to 6 hours with an average sampling rate of 2 litres per minute The same sampling stations were used as for the previous ambient air surveys Fiber counts were made on a Phase Contrast Microscope with a ma- gnification of 430X JUNE 4th 1974 Temperature = 76 Barometric Pressure - 29.45 Wind direction - South Velocity of Wind M 2 to 5 miles Outside > Clear and Sunny a, ASBESTOS ~3- ee FIBER COUNTS STATION No REMARKS FIBERS FIBER OVER 5 MICRONS A.A.1 A.A.2 A.A.3 A.A.4 A.A.5 A.1.6 A.A.7 A.A.8 A.A.9 A.A.10 A.A.10 Sample collected 200 north of the new asbestos plant- Sample collected 400 east of Olivier Blvd 30 the road on a birch tree- from Sample collected at the corner of Laurier and Olivier Streets corner of Centre Culturel - Sample collected at the Town Hall on corner of du Roi . and Luc Streets- Sample collected at the corner of Luc Street and Route No 32 - 200 N.E. corner of Recreation Centre- Sample collected at road - 20 south of the north dump road Asbestos Power Station on nearby Hydro gate - Water truck Nicolet wetting Sample collected at Asbestos between two gates - Cemetary on south fence Sample collected near the Golf Course - 20 East of the main gate on road No 32 - Sample collected on Route No 32 - 300 West of Bourbeau Street - 30 North of highway on fence - Sample collected on corner of Manville W. and Morrill Streets in Saint Barnab^' - AVERAGE 0.04 0.08 0.07 0.05 0.07 0.05 0.07 0.08 0.07 REMARKS: The average fiber concentration over five 5 microns in length was found to be 0.06 Fiber This compares with the average fiber concentration of 0.07 Fiber found on August 27th 1973 QUEBEC ASBESTOS MINING ASSOCIATION AMBIENT AIR SAMPLING IN THE CITY OF THETFORD MINES June 7th 1974 Maurice Lachance Industrial Hygiene Engineer Thetford lines Que CITY OF THETFORD MINES NOTE Same sampling and counting techniques used as for the City of Asbestos Same sampling stations as used in the previous ambient air sampling survey except for Station No 6 on Johnson street which was moved at the corner of Johnson and Bonneville streets at Mr. Nelson Lehoux's house 1040 Johnson street Station No yard to 76 10 was Dumais also relocated street nearby from Lasalle College Recreation Sampling Time 5 to 6 hours at 2 litres per minute June 7th Temperature - 76 { Barometric Pressure - 29.45 Hg Wind direction - South Wind velocity ~- 2 to 5 miles Outside - Clear- Sunny CITY OF THETFORD MINES FIBER COUNTS STATION No RELLARKS FIBERS FIBERS OVER 5 MICRONS 1 Sample collected at the playground north of intersection of Lafontaine and Patrick streets- South corner of tennis court fence- 0.15 2 Sample collected at the East Side of Ouellet street halfway between Lapierre and Lafontaine streets- Sample placed on a birch tree 30 feet from the road- 3 Sample collected at the operation office of Asbestos Corporation porch of P.R. & D. Department- South of Beaver Mine- 0.07 0.11 N Sample collected in the housing relocation area- North of Boulevard Smith Setlakwe store in new Maurice - 0.11 5 Sample collected at the front entrance of H^pital G^'n^'ralde Thetford Mines on Notre North street- Sample placed on a light pole- 6 Sample collected on the corner of Johnson and Bonne- ville streets at Mr. Nelson Lehoux's house at 1040 Johnson Sample placed on the carport post- 7 Sample collected at the corner of Notre South and Dostie strects of veranda- 0.18 0.07 0.12 8 Sample collected in Marthe Parish Denis Bion's house backyard on radio tower- 0.04 9 Sample collected at the corner of Ouellet West and Sauvageau streets a bench behind the Fibre Glasa plant behind the house now closed- 0.14 10 REMARKS: Sample collected at 76 Dumais strect Dame South and La Fabrique streets- between Notre- AVERAGE : 0.17 0.12 The average fiber concentration over five 5 was found to be 0.12 Fibers This compares with the average of 0.14 Fibers found on August 30th and 31st 1973 microns in length fiber concentration QUEBEC ASBESTOS MINING ASSOCIATION AMBIENT AIR SAMPLING IN THE CITY OF BLACK LAKE JUNE 18th 1974 Maurice Lachance Industrial Hygiene Engineer Thetford Mines Que CITY OF SLACK LAKE NOTE Same sampling and counting techniques used as for the Cities of Asbestos and Thetford Mines The use of Membrane Filters for sampling and the counts made on a Phase Contrast Microscope with a magnification of 430X Sampling Time 5 to 6 hours at 2 litres per minute JUNE 18th Temperature - 64 to 70 F Barometric Pressure = 28.75 Hg Wind Direction - West - North Wind Velocity = 5 to 8 miles Relative Humidity - 72 to 89 Outside - Cloudy with Sunny Periods CITY OF BLACK LAKE FIBER COUNTS STATION No 1 2 3 4 REMARKS FIBERS FIBERS OVER 5 MICRONS Sample collected at the City Hall on Notre street - Back of building - Sample collected in front of Centre Culturel Sample placed on the old Kiosque - Sample collected in the backyard of house situa- ted at 303 Charles street - Sample collected in the back of Maurice Lauzon's house on Lamennais street - A few hundred feet from Route No 1 - AVERAGE: 0.12 0.07 0.06 0.08 REMARKS: The average fiber concentration over five 5 microns in length was found to be 0.08 Fiber This compares with the average fiber concentration of 0.06 Fiber found on September 5th 1973 QUEBEC ASBESTOS MINING ASSOCIATION AMBIENT AIR SAMPLING IN THE TOWN OF ROBERTSONVILLE JUNE 21st 1974 Maurice Lachance Industrial Hygiene Engineer Thetford Mines Que ~~^' TOWN OF ROBERTSONVILLE NOTE Same sampling and counting techniques used as for the Cities of Asbestos Thetford Mines and Black Lake Same sampling stations as used in the previous ambient air sampling survey Membrane Filters used as sampling media and counts made on a Phase Contrast Microscope with a magnification of 430X Sampling Time 5 to 6 hours at 2 litres per minute aes, JUNE 21st 1974 Temperature - 59 Barometric Pressure = 28.50 Hg Wind Direction - West Wind Velocity <- 0 to 10 miles Relative Humidity ~~ 80 Outside - Cloudy followed by showers and heavy rain ia TOWN OF ROBERTSONVILLE FIBER COUNTS STATION No 1 2 REMARKS Sample collected in a school yard at the corner of College Avenue and Marguerite street - Sample collected at the corner of Route No 1 and Route No 269 to Pontbriand - Back of Drouin Elec- tric Shop - AVERAGE FIBERS FIBERS OVER 5 MICRONS 0.08 0.05 0.06 REMARKS: The average fiber concentration over five 5 microns in length was found to be 0.06 Fibers This compares with the average fiber concentration of 0.08 Fibers found on September 11th 1973 QUEBEC ASBESTOS MINING ASSOCIATION AMBIENT AIR SAMPLING IN THE TOWN OF JONCTION JUNE 28th 1974 Maurice Lachance Industrial Hygiene Engineer Thetford Mines Que TOWN OF JONCTION JUNE 28th 1974 NOTE Same sampling and counting techniques as used in the Cities of Asbestos and Thetford Mines The use of Membrane Filters for sam- pling and the counts made on a Phase Contrast Microscope with a ma- gnification of 430X Sampling time 5 to 6 hours at 2 liters per minute June 28th Temperature <- 71 Barometric Pressure - 29.16 Hg Wind Direction = West - South Wind Velocity - 0 to 8 miles Relative Humidity - 49 Outside ~- Clear Sunny TOWN OF JONCTION FIBER COUNTS STATION No 1 2 3 REMARKS Sample collected on old Road - East of the mine from the road - rue Principale - On a post ten feet Sample collected at the corner of rue Roy and rue du R^'servoir- on a school yard fence - Sample collected on Range No 2 - One thousand feet from Route No l - Over a mile from the mine - On a fence 10 feet from the gravel road- AVERAGE FIBERS FIBFIRS OVER 5 MICRONS 0.13 0.05 0.12 0.10 REMARKS : ; The average fiber concentration over five 5 microns in length was found to be 0.10 Fibers This compares with the average fiber concentration of 0.06 Fibers found on September 10th 1973 om.