1. WBEA Passive Sampler Validation Study for NH3 and HNO3 Compare Ogawa and Radiello PS with ADS Use the following specific adsorbing material: Sodium chloride and Nylon for HNO3 Citric and phosphorous acid for NH3 Assess DL, precision & accuracy at 2 sites: AMS01 Fort McKay (FMK), AMS06 Fort McMurray (FMM) Expose monthly for total 5 months Start on June 1, 2011

2. Adsorbent Cartridge Inlet Box Samplers and Components Filter Pack Denuder Coupler / End-cap (shipping) 2/3 Denuders SCL - CA/PA Impactor Coupler Elutriator Acceleration Jet for PM 2.5 Annular Denuder System (ADS) Ogawa PS CA - SCL - NYL Radiello PS PA Left & Right Collection Pad analyzed together (composite) Diffuser Sample Flow ADS inlet is positioned at same height above ground as all PS units !!

3. Coating solutions are 1% (w/w) in DI water: SCL …sodium chloride, CA …citric acid, PA …phosphorous acid; NYL …Nylon. Sample Media Required for Months 1 - 2 Field Blank ADS D1-SCL1 D2-SCL1 D3-PA1 FP1 EI1 D1-SCL2 D2-CA2 D3-CA2 FP2 EI2 cap D1-SCL0F D2-CA0F D3-PA0F FP0 D-SCL0L D-CA0L D-PA0L Lab Blank Denuders, EI and FP are shipped separately and assembled in field prior to sampling. Field Blanks are treated like samples except that they remain unexposed. ADS inlets (EI1 and EI2) are positioned at exact same height above ground as the PS units. With each monthly shipment one set of Lab Blanks is prepared and stored in Lab until field media are being analyzed. OgaCA0F OgaCA2 OgaCA1 Passive Samplers (PS) RadPA1RadPA2RadPA0F OgaSCL0F OgaSCL2 OgaSCL1 OgaNYL1 OgaNYL2 OgaNYL0F Field Blank Lab Blank DUP1 DUP2 OgaNYL0L OgaSCL0L OgaCA0L RadPA0L ship to each site (2x) keep stored (1x)

4. Coating solutions are 1% (w/w) in DI water: SCL …sodium chloride, CA …citric acid, PA …phosphorous acid; NYL …Nylon. Sample Media Required for Months 3 - 5 Field Blank ADS D1-SCL1 D2-PA1 EI1 D1-SCL2 D2-CA2 EI2 cap D1-SCL0F D2-CA0F D3-PA0F FP0 D-SCL0L D-CA0L D-PA0L Lab Blank ADS denuders D2-SCL1 and D3-CA2 are omitted! OgaCA0F OgaCA2 OgaCA1 Passive Samplers (PS) RadPA1RadPA2RadPA0F OgaSCL0F OgaSCL2 OgaSCL1 OgaNYL1 OgaNYL2 OgaNYL0F Field Blank Lab Blank DUP1 DUP2 OgaNYL0L OgaSCL0L OgaCA0L RadPA0L ship to each site (2x) keep stored (1x) FP1 FP2