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<br />EXHIBIT 4 Page 5
<br />$22,000,000
<br />CERTIFICATES OF PARTICIPATION
<br />MARION C~OUNT~UOREGON JECT) 1998 SERIES A
<br />PROOF OF INVESTMENT YIELD
<br />INVESTMENT YIELD : 4.829880381$
<br />PERIOD PRESENT PRESENT
<br />ENDING INVESTMENTS VALUE FACTOR VALUE
<br />12/16/98 -21,598,645.77 1.100153445 -23,761,824.54
<br />12/17/98 1.100007608
<br />12/21/98 1.099424455
<br />12/22/98
<br />12/28/98
<br />-0.00 1.099278715
<br />1.098404661
<br />-0.00
<br />O1/04/99 1.097531342
<br />O1/OS/99 1.097385853
<br />O1/11/99 1.096513324
<br />O1/19/99 1.095351032
<br />O1/22/99 -0.00 1.094915490 -0.00
<br />O1/25/99 1.094480121
<br />Ol/31/99 1.093754891
<br />02/O1/99 -53,750.00 1.093609902 -58,781.53
<br />02/04/99 1.093175052
<br />02/11/99 -0.00 1.092161075 -0.00
<br />02/18/99
<br />02/19/99
<br />-100,000.00 1.091148039
<br />1.091003396
<br />-109,100.34
<br />02/24/99 1.090280469
<br />02/28/99
<br />03/04/99
<br />-29,364.09 1.089702473
<br />1.088836053
<br />-31,972.68'
<br />03/11/99
<br />03/18/99
<br />-0.00 1.087826101
<br />1.086817085
<br />-0.00
<br />03/25/99 -0.00 1.085809005 -0.00
<br />03/31/99 1.085089521
<br />04/O1/99
<br />04/OS/99
<br />-514,439.88 1.084945681
<br />1.084370513
<br />-557,843.44
<br />04/15/99 1.082933927
<br />04/22/99
<br />04/29/99
<br />-0.00 1.081929449
<br />1.080925902
<br />-0.00
<br />04/30/99
<br />O5/06/99
<br />-56,250.00 1.080782615
<br />1.079923287
<br />-60,745.68
<br />OS/12/99
<br />OS/19/99
<br />-50.00 1.079064642
<br />1.078063753
<br />-53.90
<br />OS/26/99 1.077063793
<br />OS/31/99 1.076492803
<br />06/O1/99 1.076350103
<br />06/02/99
<br />06/07/99
<br />-0.00 1.076207422
<br />1.075494300
<br />-0.00
<br />06/08/99 1.075351732
<br />06/11/99 1.074924142
<br />06/15/99
<br />06/16/99
<br />-1,519,259.06 1.074354287
<br />1.074211870
<br />-1,632,006.12
<br />06/30/99 1.072220019
<br />07/O1/99 1.072077885
<br />07/06/99
<br />07/07/99
<br />-1,367,192.74 1.071367499
<br />1.071225479
<br />-1,464,571.70
<br />07/13/99 1.070373750
<br />07/14/99 1.070231861
<br />07/15/99
<br />07/19/99
<br />-31,875.00 1.070089991
<br />1.069522698
<br />-34,091.04
<br />07/23/99 1.068955706
<br />07/26/99
<br />07/27/99
<br />-188,724.16 1.068530660
<br />1.068389015
<br />-201,630.82
<br />07/31/99
<br />OB/06/99
<br />-53,750.00 1.067964194
<br />1.067115058
<br />-57,357.43
<br />08/13/99 1.066125253
<br />08/23/99 1.064712838
<br />08/31/99
<br />09/02/99
<br />-30,946.25 1.063725261
<br />1.063443265
<br />-32,909.59
<br />09/15/99 1.061612108
<br />09/20/99
<br />09/23/99
<br />-1,036,405.77 1.060908657
<br />1.060486810
<br />-1,099,094.65
<br />09/27/99 -589.37 1.059924609 -624.69
<br />09/28/99 1.059784105
<br />09/29/99 1.059643620
<br />10/04/99 1.058941473
<br /> PRESENT
<br />PROCEEDS VALUE FACTOR PRESENT VALUE
<br /> 1.100153445
<br />0.01 1.100007608 0.01
<br />124,368.12 1.099424455 136,733.35
<br />0.00 1.099278715 0.00
<br /> 1.098404681
<br />7,300.00 1.097531342 8,011.98
<br />3,911,617.55 1.097385853 4,292,553.76
<br /> 1.096513324
<br /> 1.095351032
<br /> 1.094915490
<br />0.00 1.094480121 0.00
<br />53,750.00 1.093754891 58,789.33
<br /> 1.093609902
<br />0.00 1.093175052 0.00
<br /> 1.092161075
<br />100,000.00 1.091148039 109,114.80
<br /> 1.091003396
<br />100,061.81 1.090280469 109,095.44
<br />27,500.00 1.089702473 29,966.82
<br /> 1.088836053
<br /> 1.087826101
<br /> 1.086817085
<br /> 1.085809005
<br /> 1.085089521
<br />514,439.88 1.084945681 558,139.33
<br /> 1.084370513
<br />882,163.90 1.082933927 955,325.22
<br />0.00 1.081929449 0.00
<br /> 1.080925902
<br />56,250.00 1.080782615 60,794.02
<br /> 1.079923287
<br />50.00 1.079064642 53.95
<br /> 1.078063753
<br />464,681.09 1.077063793 500,491.18
<br />55,625.00 1.076492803 59,879.91
<br />420,527.34 1.076350103 452,634.65
<br />0.00 1.076207422 0.00
<br /> 1.075494300
<br />80.00 1.075351732 86.03
<br /> 1.074924142
<br />1,853,782.51 1.074354287 1,991,619.19
<br /> 1.074211870
<br />26,875.00 1.072220019 28,815.91
<br />156,032.59 1.072077885 167,279.09
<br />1,367,884.80 1.071367499 1,465,507.32
<br /> 1.071225479
<br />0.27 1.070373750 0.29
<br />0.00 1.070231661 0.00
<br />31,875.00 1.070089991 34,109.12
<br /> 1.069522698
<br />598,405.60 1.068955706 639,669.08
<br />188,724.16 1.068530660 201,657.55
<br /> 1.068389015
<br />53,750.00 1.067964194 57,403.08
<br /> 1.067115058
<br />0.00 1.066125253 0.00
<br />1,249,554.04 1.064712838 1,330,416.23
<br />27,500.00 1.063725261 29,252.44
<br /> 1.063443265
<br /> 1.061612109
<br />1,036,676.28 1.060908657 1,099,818.84
<br /> 1.060486810
<br /> 1.059924609
<br />0.00 1.059784105 0.00
<br /> 1.059643620
<br />685,068.12 1.058941473 725,447.04
<br />ARBITRAGE COMPLIANCE SPECIALISTS, INC.
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