Helium Report for Month of June 1999 Users Amount %ofTtl Recovrd Lost %Lost $$$$$$$$ Adams 299 5% 288 11 4% $177.00 Andraka 216 3% 209 7 3% $125.50 Chemistry 768 12% 512 256 33% $2,176.00 Graybeal 0 0 0 $0.00 Hebard 201 3% 185 16 8% $140.50 Ihas 0 0 0 $0.00 NSC 0 0 0 $0.00 Meisel 95 2% 72 23 24% $105.00 MKBay#1 1287 21% 1243 44 3% $753.50 MKBay#2 1128 18% 965 163 14% $971.50 MKBay#3 1021 16% 973 48 5% $630.50 Reitze 0 0 0 $0.00 Sharifi 166 3% 148 18 11% $128.00 Stewart 0 0 0 $0.00 Sullivan 596 9% 592 4 1% $308.00 Takano 0 0 0 $0.00 Tanner 155 2% 117 38 25% $172.50 B155 220 4% 214 6 3% $125.00 Angerhofer 126 2% 71 55 44% $200.50 TOTAL 6278 689 $6,013.50 858 lL lost 29 lL lost / day 14% of usage lost 7753 lL recovered at Master Meter 89% recovery rate 55 transfers $ amount is billed at $.50/lL used for physics or $2.00/lL for non-physics plus $2.50/lL lost.