641610 CAMBRIDGE CSD                                                           
                                                                                    
                                                                                    
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             Amount Issued:      2,225,000   BLD                                    
 Date of Original Issuance:     15-Apr-97                                           
     __________________________________________________________________________     
                           New                    Alt./     Max.    Weighted        
 Bldg  Proj  Allowable   Constr.    Additions   Reconstr   Projec    Useful         
  .     .       Cost       Cost        Cost        Cost    t Life     Life          
     __________________________________________________________________________     
 0002  006    2,225,000           0  1,957,527     267,473  19.5  43,387,500        
___________________________________________________________________________         
              2,225,000                                           43,387,500        
                                                                                    
                       Blended Maximum Useful Life:         19.5                    
                             Original Term of Bond:         17.0                    
               Term based on prior Retro borrowing:         20.0                    
                      Selected Maximum Useful Life:         20.0                    
                       Period Prior to 1 July 2002:          8.0                    
              Sel. Remaining Term for Amortization:         12.0                    
             Principal Outstanding as of July 2002:    1,450,000                    
                             Assumed Interest Rate:       4.500%                    
       Debt Service for Amortization Year 6 of 12 :      157,702                    
                                      Bond Percent:     100.000%                    
 Aidable Debt Service for Amortization Year 6 of 12      157,702                    
                                                                                    
Additional Costs Attributable to Refinancing                                        
____________________________________________                                        
  A. Total Amount of Refinancing Issued (SA-132A #7):                1,555,000      
  B. Bond Percent:                                                    100.000%      
  C. Applicable Building Aid Ratio:                                      79.5%      
  D. State Share of Outstanding Principal (SA132-A #3 * B * C):      1,152,750      
  E. Amount of Original Principal Refinanced: (SA132-A # 4)          1,450,000      
  F. State Share Ratio: (D / E)                                          79.5%      
  G. Total Fixed Costs Aided at 100% (SA132-A # 13):                     1,590      
  H. Total Variable Costs of Refinancing (SA132-A # 23):                22,475      
  I. State Share of Variable Costs Aided at 100%:( H * F)               17,868      
  J. Total Principal Added(A - E - G - H):                              80,935      
  K. State Share of Additional Principal Aided at 100% (J * F):         64,343      
  L. Total Refinancing Costs Aided at 100% (G + I + K):                 83,801      
  M. Local Share of Variable Costs Aided at State Share (H - I):         4,607      
                                                                                    
Assumed Aidable Debt Service for Refinancing                                        
____________________________________________                                        
  Assumed Debt Service for Fixed Costs:                                    172      
  Assumed Debt Service for State Share of Variable Costs:                1,944      
  Assumed Debt Service for State Share of Additional Principal:          6,998      
  Assumed Debt Service for Local Share of Variable Costs: *                502      
 * After application of Bond Percent.                                               
                                                                                    
                                                                                    
                                                                                    
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             Amount Issued:      1,500,000   BLD                                    
 Date of Original Issuance:     23-Feb-99                                           
     __________________________________________________________________________     
                           New                    Alt./     Max.    Weighted        
 Bldg  Proj  Allowable   Constr.    Additions   Reconstr   Projec    Useful         
  .     .       Cost       Cost        Cost        Cost    t Life     Life          
     __________________________________________________________________________     
 0002  007    1,500,000           0    431,753   1,068,247  16.5  24,750,000        
___________________________________________________________________________         
              1,500,000                                           24,750,000        
                                                                                    
                       Blended Maximum Useful Life:         16.5                    
                             Original Term of Bond:         15.0                    
               Term based on prior Retro borrowing:         17.0                    
                      Selected Maximum Useful Life:         17.0                    
                       Period Prior to 1 July 2002:          5.0                    
              Sel. Remaining Term for Amortization:         12.0                    
             Principal Outstanding as of July 2002:    1,100,000                    
                             Assumed Interest Rate:       4.500%                    
       Debt Service for Amortization Year 6 of 12 :      119,636                    
                                      Bond Percent:     100.000%                    
 Aidable Debt Service for Amortization Year 6 of 12      119,636                    
                                                                                    
Additional Costs Attributable to Refinancing                                        
____________________________________________                                        
  A. Total Amount of Refinancing Issued (SA-132A #7):                1,165,000      
  B. Bond Percent:                                                    100.000%      
  C. Applicable Building Aid Ratio:                                      79.5%      
  D. State Share of Outstanding Principal (SA132-A #3 * B * C):        874,500      
  E. Amount of Original Principal Refinanced: (SA132-A # 4)          1,100,000      
  F. State Share Ratio: (D / E)                                          79.5%      
  G. Total Fixed Costs Aided at 100% (SA132-A # 13):                     1,191      
  H. Total Variable Costs of Refinancing (SA132-A # 23):                18,815      
  I. State Share of Variable Costs Aided at 100%:( H * F)               14,958      
  J. Total Principal Added(A - E - G - H):                              44,994      
  K. State Share of Additional Principal Aided at 100% (J * F):         35,770      
  L. Total Refinancing Costs Aided at 100% (G + I + K):                 51,919      
  M. Local Share of Variable Costs Aided at State Share (H - I):         3,857      
                                                                                    
Assumed Aidable Debt Service for Refinancing                                        
____________________________________________                                        
  Assumed Debt Service for Fixed Costs:                                    130      
  Assumed Debt Service for State Share of Variable Costs:                1,626      
  Assumed Debt Service for State Share of Additional Principal:          3,890      
  Assumed Debt Service for Local Share of Variable Costs: *                420      
 * After application of Bond Percent.                                               
                                                                                    
                                                                                    
                                                                                    
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             Amount Issued:      8,521,610   BLD-10                                 
 Date of Original Issuance:     25-Jul-00                                           
     __________________________________________________________________________     
                           New                    Alt./     Max.    Weighted        
 Bldg  Proj  Allowable   Constr.    Additions   Reconstr   Projec    Useful         
  .     .       Cost       Cost        Cost        Cost    t Life     Life          
     __________________________________________________________________________     
 0002  009    8,889,794           0  4,282,773   4,607,021  17.5 155,571,395        
 0002  010      436,206           0          0     436,206  15.0   6,543,090        
___________________________________________________________________________         
              9,326,000                                          162,114,485        
                                                                                    
                       Blended Maximum Useful Life:         17.5                    
                             Original Term of Bond:         16.0                    
               Term based on prior Retro borrowing:         18.0                    
                      Selected Maximum Useful Life:         18.0                    
                       Period Prior to 1 July 2002:          3.0                    
              Sel. Remaining Term for Amortization:         15.0                    
             Principal Outstanding as of July 2002:    7,475,000                    
                             Assumed Interest Rate:       4.500%                    
       Debt Service for Amortization Year 6 of 15 :      690,680                    
                                      Bond Percent:     100.000%                    
 Aidable Debt Service for Amortization Year 6 of 15      690,680                    
                                                                                    
Additional Costs Attributable to Refinancing                                        
____________________________________________                                        
  A. Total Amount of Refinancing Issued (SA-132A #7):                8,310,000      
  B. Bond Percent:                                                    100.000%      
  C. Applicable Building Aid Ratio:                                      89.5%      
  D. State Share of Outstanding Principal (SA132-A #3 * B * C):      6,690,125      
  E. Amount of Original Principal Refinanced: (SA132-A # 4)          7,475,000      
  F. State Share Ratio: (D / E)                                          89.5%      
  G. Total Fixed Costs Aided at 100% (SA132-A # 13):                     8,497      
  H. Total Variable Costs of Refinancing (SA132-A # 23):               115,115      
  I. State Share of Variable Costs Aided at 100%:( H * F)              103,028      
  J. Total Principal Added(A - E - G - H):                             711,388      
  K. State Share of Additional Principal Aided at 100% (J * F):        636,692      
  L. Total Refinancing Costs Aided at 100% (G + I + K):                748,217      
  M. Local Share of Variable Costs Aided at State Share (H - I):        12,087      
                                                                                    
Assumed Aidable Debt Service for Refinancing                                        
____________________________________________                                        
  Assumed Debt Service for Fixed Costs:                                    786      
  Assumed Debt Service for State Share of Variable Costs:                9,520      
  Assumed Debt Service for State Share of Additional Principal:         58,830      
  Assumed Debt Service for Local Share of Variable Costs: *              1,116      
 * After application of Bond Percent.                                               
                                                                                    
                                                                                    
                                                                                    
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             Amount Issued:        800,000   BLD-10                                 
 Date of Original Issuance:     21-Aug-01                                           
     __________________________________________________________________________     
                           New                    Alt./     Max.    Weighted        
 Bldg  Proj  Allowable   Constr.    Additions   Reconstr   Projec    Useful         
  .     .       Cost       Cost        Cost        Cost    t Life     Life          
     __________________________________________________________________________     
 0002  009    8,889,794           0  4,282,773   4,607,021  17.5 155,571,395        
 0002  010      436,206           0          0     436,206  15.0   6,543,090        
 7011  001       50,000      50,000          0           0  30.0   1,500,000        
___________________________________________________________________________         
              9,376,000                                          163,614,485        
                                                                                    
                       Blended Maximum Useful Life:         17.5                    
                             Original Term of Bond:         11.0                    
               Term based on prior Retro borrowing:         18.0                    
                      Selected Maximum Useful Life:         18.0                    
                       Period Prior to 1 July 2002:          1.0                    
              Sel. Remaining Term for Amortization:         17.0                    
             Principal Outstanding as of July 2002:      750,000                    
                             Assumed Interest Rate:       4.500%                    
       Debt Service for Amortization Year 6 of 17 :       63,594                    
                                      Bond Percent:     100.000%                    
 Aidable Debt Service for Amortization Year 6 of 17       63,594                    
                                                                                    
Additional Costs Attributable to Refinancing                                        
____________________________________________                                        
  A. Total Amount of Refinancing Issued (SA-132A #7):                  805,000      
  B. Bond Percent:                                                    100.000%      
  C. Applicable Building Aid Ratio:                                      89.5%      
  D. State Share of Outstanding Principal (SA132-A #3 * B * C):        671,250      
  E. Amount of Original Principal Refinanced: (SA132-A # 4)            750,000      
  F. State Share Ratio: (D / E)                                          89.5%      
  G. Total Fixed Costs Aided at 100% (SA132-A # 13):                       824      
  H. Total Variable Costs of Refinancing (SA132-A # 23):                10,370      
  I. State Share of Variable Costs Aided at 100%:( H * F)                9,281      
  J. Total Principal Added(A - E - G - H):                              43,806      
  K. State Share of Additional Principal Aided at 100% (J * F):         39,206      
  L. Total Refinancing Costs Aided at 100% (G + I + K):                 49,312      
  M. Local Share of Variable Costs Aided at State Share (H - I):         1,089      
                                                                                    
Assumed Aidable Debt Service for Refinancing                                        
____________________________________________                                        
  Assumed Debt Service for Fixed Costs:                                     70      
  Assumed Debt Service for State Share of Variable Costs:                  786      
  Assumed Debt Service for State Share of Additional Principal:          3,324      
  Assumed Debt Service for Local Share of Variable Costs: *                 92      
 * After application of Bond Percent.                                               
                                                                                    
                                                                                    
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End of Report                                                                       
                                                                                    
                                                                             

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