# DEPARTMENT OF THE NAVY

COMMANDER
NAVY REGION HAWAII
850 TICONDEROGA ST STE 110 JBPHH, HAWAI196860-5101



## 5090 

# Ser N45/712
September 22, 2014'

CERTIFIED N0: 7014 1200 0000 9858 5196



# Mr. Steven Chang, P.E., Chief Hawaii State Department of Health Environmental Management Division
Solid and Hazardous Waste Branch

919 

# Ala Moana Boulevard, Room 212 Honolulu, HI 96814

Dear Mr. Chang,

SUBJECT: RED HILL TANK 5 RELEASE FREE PRODUCT RECOVERY

DEPARTMENT OF HEALTH (DOH) FACILITY ID NO. 9-102271,

DOH RELEASE ID N0. 140010

The following information is provided to update your Department on the free product recovery efforts underway for the Red Hill Tank 5 fuel release of January 2014.

a. From the Soil and Rock: The Navy has submitted a Site Characterization Work Plan/Sampling and Analysis Plan for your review. The characterization may, pending DOH approval, include boring into the basalt beneath the tank to determine the nature and extent of any contamination. If recoverable free product is discovered during this investigation into the subsurface, efforts will be made to remove the free product. Geology and contamination information gathered from the
characterization will be used to determine the best remediation
solutions. The results of this site characterization will be submitted to your office.

b. From the Tank Structure: The Navy has also been evaluating courses of action to investigate whether recoverable free product resides within the tank structure (i.e., within any voids between the steel tank and concrete backing). It has been determined at present that the most likely path of any released

fuel would be between the steel and the concrete tank
containment toward the bottom of the tank. To access the area at the bottom of the tank some of the epoxy coating/liner and welded patch plates will be removed in several areas. Holes drilled through the steel liner plates will be explored for existing free product. If found, the recoverable free product

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# 5090 Ser N45/712 Septeber 22, 2014

will be retrieved. This destructive exploration will be conducted in a manner that will allow the integrity of the tank to be reestablished and avoid creating vulnerabilities for future fuel releases. Upon completion, the tank integrity impacted by this effort will be restored. The results of this free product investigation from the tank structure will be shared with your office.

We will continue to keep you informed on our progress. If you have any questions regarding this matter, please contact Aaron Poentis at (808) 471-1171, extension 226. -

Sincerely,

D. A. TUFTS 

# Captain, CEC, U.S. Navy Regional Engineer By direction of the
Commander

Copy to: Steven Linder, EPA Region IX

CAPT 

# Wheeler, NAVSUP FLC 

# Pearl Harbor CAPT Bower, DLA Energy Pacific

CAPT 

# Edelson, NAVFAC 

# EXWC CAPT Williamson, NAVFAC PAC



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