Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          10-264-09-06  01-470214                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  94%          87%                             
01-HUM-101-R40.9/R42.2                    Federal Project:                              
                                     ER-43F4(4)                                         
                                                                                        
                                                                                        
Progress payment No. 21            Payment period ending: 09-16-10                      
GORDON N BALL INC                                                                       
333 CAMILLE AVENUE                                                                      
ALAMO CA 94507                                                                          
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.       4,615,706.92      221,679.70                      
2.a. Extra Work                         183,707.35       95,809.97                      
  b. Adjustment Comp.                   -67,153.76      -67,153.76                      
3. Materials on Hand                                                                    
4. Earned Subject to Retention        4,732,260.51      250,335.91                      
5. Mobilization                         550,000.00            0.00                      
6. Total Work Completed    5,282,260.51                                                 
7. Deductions                            -5,000.00            0.00                      
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor            5,277,260.51      250,335.91                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                             250,335.91