Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          07-263-10-44  04-1S2824                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  93%          98%                             
04-SON-116-3.2/ .0                    Federal Project:                                  
04-SON-116-10.3/ .0                                     ER-35M0(4)                      
                                                                                        
                                                                                        
Progress payment No. 15            Payment period ending: 09-20-07                      
GORDON N BALL INC                                                                       
333 CAMILLE AVE                                                                         
ALAMO CA 94507                                                                          
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.       1,683,897.00       81,417.55                      
2.a. Extra Work                          73,130.74       30,458.15                      
  b. Adjustment Comp.                   265,000.00      265,000.00                      
3. Materials on Hand                                                                    
4. Earned Subject to Retention        2,022,027.74      376,875.70                      
5. Mobilization                         180,000.00            0.00                      
6. Total Work Completed    2,202,027.74                                                 
7. Deductions                                                                           
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor            2,202,027.74      376,875.70                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                             376,875.70