Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          08-056-10-23  05-485614                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  16%          17%                             
05-SLO-101-19.6/22.0                    Federal Project:                                
                                     NONE                                               
                                                                                        
                                                                                        
Progress payment No. 04            Payment period ending: 02-20-08                      
R BURKE CORPORATION                                                                     
P O BOX 957                                                                             
SAN LUIS OBISPO CA 934060957                                                            
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.         713,286.48      483,219.33                      
2.a. Extra Work                                                                         
  b. Adjustment Comp.                                                                   
3. Materials on Hand                                                                    
4. Earned Subject to Retention          713,286.48      483,219.33                      
5. Mobilization                          87,000.00       29,000.00                      
6. Total Work Completed      800,286.48                                                 
7. Deductions                                                                           
8. a.Contract Retentions                -71,328.65      -48,321.93                      
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor              728,957.83      463,897.40                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                             463,897.40