Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          06-082-09-39  07-250804                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  21%          86%                             
07-LA-10-0.0/0.6                    Federal Project:                                    
                                     NONE                                               
                                                                                        
                                                                                        
Progress payment No. 04            Payment period ending: 03-20-06                      
DRILL TECH DRILLING & SHORING                                                           
2200 WYMORE WAY                                                                         
ANTIOCH, CA 94509                                                                       
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.          26,560.00            0.00                      
2.a. Extra Work                         461,471.19       61,409.38                      
  b. Adjustment Comp.                                                                   
3. Materials on Hand                                                                    
4. Earned Subject to Retention          488,031.19       61,409.38                      
5. Mobilization                                                                         
6. Total Work Completed      488,031.19                                                 
7. Deductions                                                                           
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor              488,031.19       61,409.38                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                              61,409.38