Dept. of Trans.       95% REDUCTION   Serial No.  Contract No.                          
                                          05-110-10-06  04-2S2504                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                 PEP        SAT                                
04-SM-35-31.2/31.4                    Federal Project:                                  
                                     ACST-S035(5)                                       
                                                                                        
                                                                                        
Progress payment No. 15            Payment period ending: 04-20-05                      
GORDON N BALL INC                                                                       
333 CAMILLE AVENUE                                                                      
ALAMO CA 94507                                                                          
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.         587,804.00          220.00                      
2.a. Extra Work                         238,798.42            0.00                      
  b. Adjustment Comp.                                                                   
3. Materials on Hand                                                                    
4. Earned Subject to Retention          826,602.42          220.00                      
5. Mobilization                          50,000.00            0.00                      
6. Total Work Completed      876,602.42                                                 
7. Deductions                                                                           
8. a.Contract Retentions                -41,330.12          -11.00                      
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.          31,330.12           11.00                      
9. Total pay to Contractor              866,602.42          220.00                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                                 220.00