j AIR SAMPLER CHARACTERISTICS FILTER MATERIAL: "Delbag" polystyrene Absolute filter (99.8% collection efficiency for . 3p). HIGH VOLUME: 2 units used simultaneously at two sites. Q = 1800 m3/hr. Unattended endurance = 36 hrs. Q total = 65,000 m3. Filter Area = 1.25 m2, LOW VOLUME: 5 units: two site pairs; Palumbo Shipboard. Q- 8m3/hr. Unattended endurance = 5 days. Q = 1000 m3/5 days. Filter Area = 0.032 m2, CASCADE IMPACTORS: 2 units used at two sites. Q = 34 m3/hr. Unattended endurance = 5 days. Q = 4100 m3/5 days. 5 fiberglass filters each with particle separations: > 7p; 3.3—7. 0p; 2.0—3. 3p; 1.1—2,0p; .O1—1. lp. RECORDING WEATHER STATIONS: Portable station at Yvonne and Coast Guard at ENT.