Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          01-079-11-49  04-438614                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  80%          79%                             
04-SCL-237-8.0/9.6                    Federal Project:                                  
04-SCL-880-7.8/10.1                                     NHI-880-1(41)                   
                             AC-880-1(41)                                               
                             ACST-S237(7)                                               
Progress payment No. 31            Payment period ending: 03-20-01                      
DE SILVA GATES CONSTRUCTION                                                             
P O BOX 2909                                                                            
DUBLIN CA 94568                                                                         
                                                                                        
                                                                                        
Escrow No.  01171                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.      27,599,508.46      392,872.21                      
2.a. Extra Work                       2,189,169.98      -13,051.51                      
  b. Adjustment Comp.                   522,703.94        7,000.00                      
3. Materials on Hand                    396,226.65       28,690.38                      
4. Earned Subject to Retention       30,707,609.03      415,511.08                      
5. Mobilization                       3,874,000.00            0.00                      
6. Total Work Completed   34,185,382.38                                                 
7. Deductions                            -2,600.00            0.00                      
8. a.Contract Retentions             -1,535,380.45      -20,775.55                      
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor           33,043,628.58      394,735.53                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow     1,535,380.00                                                  
12. Net Pymt. this Estimate                             394,735.53