Kah Sheets Bay, SE03-02

Tim L. Robertson

Soundings in fathoms

Center of map at 56˚ 30.8' N Lat., 133˚ 06.4' W Lon.

SE03-02 Kah Sheets Bay looking south.Lege

ndMap Photo&

SE03-02 Kah Sheets Bay looking west.

June 26, 2003

Free-oil Containmentand Recovery, ShallowWater

Exclusion Booming

Deflection Booming

Protected-water Boom,Ebb Tide

Protected-water Boom,Flood Tide

Tidal-seal Boom

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Kah Islands

Mudflats

Scale1,000 yds.

1 mi.

1 nm

Flood Tide

Ebb

Tide

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FO-S01b

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02bEX

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03dDF

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This is not intended for navigational use.

SE03-02 Looking northwest into Kah Sheets Bay.

Southeast Alaska Geographic Response Strategies June 26, 2003

SE03-02

ID Location and Description Response Strategy Implementation Response Resources Staging Area Site Access Resources Protected(months)

Special Considerations

SE03-02-01 Kah Sheets Bay

Nearshore waters in thegeneral area of:

a. Lat. 56º 30.8 NLon. 133º 04.7 W

b. Lat.56º 30.1 NLon.133º 05.3 W

Free-oil Recovery

Maximize free-oil recovery inthe offshore & nearshoreenvironment outside KahSheets Bay

Deploy free-oil recovery strike teamsupwind and up-current of Kah SheetsBay. Use aerial surveillance to locateincoming slicks.

Multiple free-oil recovery strike teamsas required to maximize interception ofoil before it impacts sensitive areas.

Petersburg;Marine vessel

Via marine waters

NOAA chart: 17382

Same as SE03-02-03 Shallow water

Vessel masters should havelocal knowledge.

Hazing shorebirds should beconsidered – contact USFWSand ADFG.

SE03-02-02 Kah Sheets Baya. Lat. 56º 31.4 N

Lon. 133º 05.4 W

b. Lat. 56º 30.9 NLon. 133º 05.3 W

Exclusion

Exclude oil from entering KahSheets Bay north of KahIslands.

Place protected-water boom, with tidal-seal on both ends, between islands, toexclude oil from entering Kah Sheets Baycove. Place Boom (a) must in a chevronpattern due to strong current through thechannel.

Boom Arrays

a. 2000 ft.

b. 400 ft.

DeploymentEquipment

2400 ft. protected-water boom20 ea. anchor systems (~40 lbs.)4 ea. > 50 ft. section tidal-seal boom8 ea. anchor stakes

Vessels/Personnel/TendingSame as SE03-02-03

Petersburg;Marine vessel

Via marine waters

NOAA chart: 17382

Same as SE03-02-03 Significant SE winds mayrequire the exclusion tacticsbe deployed at key resourceswithin the bay.

Tested: not yet

Surveyed: not yet

SE03-02-03 Kah Sheets Baya. Lat. 56º 29.8 N

Lon. 133º 06.4 W

b. Lat. 56º 30.1 NLon. 133º 06.0 W

c. Lat. 56º 30.3 NLon. 133º 05.7 W

d. Lat. 56º30.5 NLon. 133º 05.5 W

e. Lat. 56º30.8 NLon. 133º 05.0 W

Deflection

Deflect oil away from KahSheets Bay to free-oilrecovery strike teams.

Use vessels with deck space (class 2/3/4)to transport equipment. Use small fishingvessels and skiffs (class 4/6) to deployboom and set anchors. Place 8800 ft. ofprotected-water boom in cascaded arraysto deflect oil to free-oil recovery striketeams. Reconfigure boom when tidechanges. Monitor throughout tide.

Boom Arrays

a. 1800 ft.

b. 1800 ft.

c. 1800 ft.

d. 1800 ft.

e. 1600 ft.

DeploymentEquipment

8800 ft. protected-water boom176 ea. anchor systems (~40 lbs.)

Vessels2 ea. class 22 ea. class 3/42 ea. class 6

Personnel / Shift18 ea. vessel crewTending

Vessels2 ea. class 3/42 ea. class 6

Personnel / shift6 ea. vessel crew

Petersburg;Marine vessel

Via marine waters

NOAA chart: 17382

Fish-herring, intertidalsalmon/trout spawning(sockeye, coho, chum,pink, steelhead,cutthroat, DollyVarden)

Birds-waterfowl andshorebird concentrationarea

Habitat-kelp andeelgrass beds, mudflats

Human use-highrecreational use

This aggressive strategyrequires significantexperience and resources toimplement. With limitedresources, deploy one 1800ft. stepped array (600 ft.each) at northern andsouthern ends of bay.

REPORT any culturalresources found duringoperations to FOSC HistoricProperties Specialist.

See Figure G-3-6 forequipment locations.

Tested: not yet

Surveyed: not yet