51 Gpm/gal Sample Ce Washineton, D. Ce: Collected at the Naval Research Laboratory. Samples were taken by direct fall into gal- vanized tubs on the roof of one of the NRL buildings. The precipitation in inches is that reported by the local Weather Bureau station for the period of sample collection. 1. 26 Be he CL 790: Rain, 2.0 gale, 0.61", collected 2000, April 11, 1955 to 0400, April 12, 1955. CL 791-P: Rain, 2.92 gal., 0.68", collected 0030 to 1500, April 1h, 1955. CL 792: Rain, 0.845 gal., 0.21", collected 2315 to 2400, April 1h, 1955. Rain, 0.697 Bale, 0.21", collected 0415, April 2h, 1955 to 0300, April 25, 1955. 6. CL 795=P: Rain, 2430 Bale, 0.39", collected April 25, 1955 to 0700, April 26, 1955. To 8. De CL 797: 1500, Rain, 0.771 gal., 0.19%, collected 1630 to 2030, May 20, 2506 + 305 39.0 + 1.7 46.7 + 2.2 April 21, 1955 to 02h5, April 22, 1955. 56 CL 79h: 34.3 + lob 1955. 195.0 + h.3 15.5 + 0.6 112.9 + 2.0 1.92 + 0.22 to 1,00, May 22, 1955, Pittsburgh, Pennsylvania: Collected by the Nuclear Science and Engineering Corporation. Samples were taken by direct fall into galvanized tubs on the roof of the laboratory building. The precipitation in inches is that reported by the local Weather Bureau station for the period of sample collection. 1. CL 876-P: Rain, Pl-20-Ri, 2.47 gale, 0.48", 26 CL 877-P: Rain, PL-21-RW, 5.70 gal., 0.65", col‘ected 1000, July 19, 1955 to 1100, July 25, 19556 18.8 + 1.4 36 CL 878-P; Rain, PL-22-Ril, 4.40 gale, 0.60", 8.2 + 065 he CL 879=P: Rain, PL-23-RW, 1.98 gal., 0.18", cole lected 0900, July 28, 1955 to 1000, August 6, 1955, cole lected 1200, July 10, 1955 to 1000, July 19, 19556 cole lected 1100, July 25, 1955 to 0900, July 28, 19556 5e CL 961-P: Rain, PL-2)-RW, 0.06 gal., 0.18", col- lected 1000, August 6, 1955 to 1500, August 8, 1955. CL 962-P: Rainy PL~25-RW, 4.91 gale, 1.98", col- lected 1500, August 8, 1955 to 1630, August 11, 1955, 16.6 + 1.5 8.7 + 1.0 10.8 + 1.0 5.55 + 0.32