Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          06-143-11-27  05-0K2204                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                 PEP        SAT                                
05-SB-101-18.9/19.8                    Federal Project:                                 
                                     ACST-Q101(91)                                      
                             PHG-Q101(91)                                               
                                                                                        
Progress payment No. 13            Payment period ending: 05-20-06                      
R BURKE CORPORATION                                                                     
P O BOX 957                                                                             
SAN LUIS OBISPO CA 934060957                                                            
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.         614,902.49        1,600.00                      
2.a. Extra Work                          22,212.22            0.00                      
  b. Adjustment Comp.                                                                   
3. Materials on Hand                                                                    
4. Earned Subject to Retention          637,114.71        1,600.00                      
5. Mobilization                          30,000.00            0.00                      
6. Total Work Completed      667,114.71                                                 
7. Deductions                                                                           
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor              667,114.71        1,600.00                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                               1,600.00