Dept. of Trans.       SUPPLEMENTAL   Serial No.  Contract No.                           
                                          06-216-16-08  03-3A2604                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  85%         100%                             
03-NEV-49-7.3/8.1                    Federal Project:                                   
                                     ACST-P049(135)                                     
                             PH-P049(135)                                               
                                                                                        
Progress payment No. 11            Payment period ending: 08-04-06                      
STIMPEL WIEBELHAUS ASSOCIATES                                                           
P O BOX 492335                                                                          
REDDING CA 960492335                                                                    
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.       1,375,587.28       26,248.50                      
2.a. Extra Work                         317,741.08       56,348.44                      
  b. Adjustment Comp.                    31,874.89      -15,567.53                      
3. Materials on Hand                                                                    
4. Earned Subject to Retention        1,725,203.25       67,029.41                      
5. Mobilization                         169,137.00            0.00                      
6. Total Work Completed    1,894,340.25                                                 
7. Deductions                            -6,000.00        2,000.00                      
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor            1,888,340.25       69,029.41                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                              69,029.41