Division of Spill Prevention and Response

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West Icy Bay Log Camp

 

Incident location map. Summary Date: December 2004 View detailed information from database on this site. arrow
Status: Active  
Location: Icy Bay, near Yakutat, AK Latitude/ Longitude: See database entries for these several sites.
DEC Contaminated Sites Contact: Bill Janes, Project Manager - 907-465-5208
Ariel photo of site.
Ariel view of site location.

Description

 

Icy Bay is located on the Alaska mainland along the coastal margin of the Gulf of Alaska and the Wrangell-St.Elias Mountains near the foot of Mt. St. Elias. State of Alaska timber managed by either the University of Alaska or Department of Natural Resources Mental Health Trust Lands has been logged in the Icy Bay area since the 1970s. Various logging facilities stretch along 35 miles of road, including the camp waste incinerator, woodwaste disposal site, heavy equipment shops, generators, bulk fuel storage and camp residential facilities. Spills and leaks common to the logging industry resulted in significant petroleum contamination in and around the various facilities over the years.

 


Current Status

 

The bioremediation system used at West Icy Bay during the summer of 2003 is a natural blend of nine, non-genetically engineered bacterial strains cultured from petroleum contaminated environments. This “bioaugmentation” process achieves clean-up goals at a fast rate, an important consideration at remote sites where it may be difficult and expensive to monitor treatment results over longer periods of time. The addition of a specially formulated fertilizer base that won’t quickly leach away with heavy rain helps stimulate microbial activity. Cultured microbe populations die after their petroleum hydrocarbon energy source no longer exists.


Photos Courtesy DMC Technologies.

STEP 1: Freeze-dried microbes were innoculated in two old 2,000-gallon diesel tanks with the tops cut away. The tanks were set-up with heaters, air injection and recirculation pumps. Microbes were added when the water temperature reached 60 degrees F. Organisms were acclimated with one gallon of diesel per day per tank until a high bacteria plate count was achieved. Typically this took between 24 and 48 hours.

Step 1: Freeze-dried microbes were innoculated in two old 2,000-gallon diesel tanks with the tops cut away.

STEP 2: Solid form bio-nutrients were spread across the surface of the contaminated stockpiles using a hand broadcaster. Approximately one lb. of nutrient was used per ton of contaminated soil. The contaminated soil was then dosed with five gallons of microbe concentrate per one yard of contaminated soil. An old fire truck was used to spray the mixture onto the soil.

STEP 2: Solid form bio-nutrients were spread across the surface of the contaminated stockpiles using a hand broadcaster.

STEP 3:The microbes and and bio-nutrients were mixed using a custom designed rake attached to a dozer. Two or three passes with the dozer ensured good mixing to a 12"-18" depth.

Step 2: Two or three passes with the dozer ensured good mixing to a 12

STEP 4: The top 12"- 18" “lift” of raked material was transferred to the treatment cells using an excavator. Material was thrown from the shovel to enhance aeration.

Step 3: Material was thrown from the shovel to enhance aeration.

STEP 5: The contaminated stockpiles and treatment cells were groomed and readied for the next application. Treatment cells were covered with black plastic upon completion to enhance heat absorbtion. Clean confirmation samples were collected after three or four weeks. Cleanup levels were achieved for about 15,000 cubic yards of petroleum-contaminated soil, a 90% reduction in contaminant concentrations in less than a month.

STEP 4: The contaminated stockpiles and treatment cells were groomed and readied for the next application.

Step 4: Treatment cells were covered with black plastic upon completion to enhance heat absorbtion.

More Information

 

  • Camp #1 Final Cleanup Report (PDF 9.49M) large file

  • Camp #1 No Further Remedial Action Planned (PDF 101K)

  • Camp #2 Final Cleanup Report (PDF 1.37M)

  • Camp #2 No Further Remedial Action Planned (PDF 53K)

 

Contaminated SItes Database Reports