Dept. of Trans.       SEMI-FINAL   Serial No.  Contract No.                             
                                          08-057-09-15  08-0G6704                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                 100%         100%                             
08-SBD-58-R13.0/22.4                    Federal Project:                                
                                     NONE                                               
                                                                                        
                                                                                        
Progress payment No. 06            Payment period ending: 02-01-08                      
PENHALL COMPANY                                                                         
P O BOX 310                                                                             
ROGERS MN 55374                                                                         
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.       1,154,776.50            0.00                      
2.a. Extra Work                                                                         
  b. Adjustment Comp.                    -5,000.00            0.00                      
3. Materials on Hand                                                                    
4. Earned Subject to Retention        1,149,776.50            0.00                      
5. Mobilization                                                                         
6. Total Work Completed    1,149,776.50                                                 
7. Deductions                           -72,900.00       10,000.00                      
8. a.Contract Retentions                -56,749.33            0.00                      
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.          56,749.33            0.00                      
9. Total pay to Contractor            1,076,876.50       10,000.00                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                              10,000.00