Helium Report for Month of April 1998 Users Amount %ofTtl Recovrd Lost %Lost $$$$ Adams 0 0 0 $0.00 Chemistry 757 17% 611 146 19% $1,879.00 Graybeal 0 0 $0.00 Hebard 0 0 0 $0.00 Ihas 0 0 0 $0.00 MSE 329 7% 325 4 1% $668.00 Meisel 168 4% 130 38 23% $179.00 MKBay#1 1563 35% 1452 111 7% $1,059.00 MKBay#2 0 0 0 $0.00 MKBay#3 1361 31% 1261 100 7% $930.50 Reitze 0 0 0 $0.00 Sharifi 25 1% 8 17 68% $55.00 Stewart 203 5% 195 8 4% $121.50 Sullivan 5 0% 5 0 0% $2.50 Takano 0 0 0 $0.00 Tanner 42 1% 20 22 52% $76.00 TOTAL 4453 446 $4,971 594 lL lost 20 lL lost / day 13% of usage lost 5634 lL recovered at Master Meter 89% recovery rate 40 transfers $ amount is billed at $.50/lL used for physics or $2.00/lL for non-physics plus $2.50/lL lost.