Dundas Bay, SE06-07

Tim L. Robertson

Soundings in fathoms

Center of map at 58˚27' N Lat., 136˚ 31' W Lon.

SE06-07 Dundas Bay entrance looking towards the northwest.Lege

ndMap Photo&

SE06-07-02 & 03 Looking northwesr at the islands inDundas Bay

June 26, 2003

Free-oil Containment andRecovery, Shallow Water

Exclusion Booming

Deflection Booming, Fixed

Passive Recovery andDebris Removal

Protected-water Boom

Snare Line

Tidal-seal Boom

Bears in Area, GuardsNeeded

FO-S

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1 mi.

1,000 yds.

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This is not intended for navigational use.

SE06-07-04 Looking north at a stream in Dundas Bay.

SE06-07-02d&e Lookingsouthwest in Dundas Bay.

Southeast Alaska Geographic Response Strategies June 26, 2003

SE06-07

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

Special Considerations

SE06-07-01 Dundas Bay

(confluence of NW andSW arms) at:

Lat. 58º 24.05 NLon. 136º 28.4 W

Free-oil Recovery

Maximize free-oil recovery innear the source of the spill.Note: The confluence is achoke point and poses thehighest risk of a grounding ofthe areas in Dundas Bay.

Deploy free-oil recovery strike teams inareas immediately adjacent to the vesselcasualty. Use aerial surveillance to locateareas of heavy slick concentrations.

Multiple free-oil recovery striketeams as required to maximizeinterception of oil before it impactssensitive areas.

Bartlett Cove,Glacier BayNational Park, orGustavus

Via marine waters. Marine mammals-harbor seals

Fish-intertidal salmon spawning(pink, chum) (summer-fall)

Birds-waterfowl and shorebirds(year-round)

Habitat-marsh, tidal mudflats andwetlands

Human use-high recreational use

Land management-National Park

Terrestrial mammals-bears

Bear hazard alongshoreline.

See Figure G-3-12 forequipment locations.

SE06-07-02 Dundas Bay

(confluence of NW andSW arms) Between isletsalong northeast &southeast shoreline at:

a. Lat. 58º 24.0 NLon. 136º 27.4 W

b. Lat. 58º 23.8 NLon. 136º 27.0 W

c. Lat. 58º 23.3 NLon. 136º 25.4 W

d. Lat. 58º 22.4 NLon. 136º 24.3 W

e. Lat. 58º 22.15 NLon. 136º 23.7 W

Exclusion

Exclude oil from enteringwetlands north of islets.

Use class 2 and class 3/4 vessels withdeck space to transport equipment. Placeprotected-water boom, with tidal-seal oneach end between islets using class 6skiffs. Boom should roughly follow theline of the channel.

Boom Arrays

a. 500 ft.

b. 1500 ft.

c. 1000 ft.

d. 3000 ft.

e. 800 ft.

DeploymentEquipment

6800 ft. protected-water boom.9 ea ~40 lbs. anchor systems for

boom every 500 feet.10 ea. 50 ft. of tidal-seal boom units10 ea. Anchor stakes

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

Personnel Shift18 ea. vessel crewTending

Vessels1 ea. class 3/42 ea. class 6

Personnel/Shift5 ea vessel crew

Bartlett Cove,Glacier BayNational Park, orGustavus

Via marine waters. See SE06-07-02 Bear hazard alongshoreline.

This area is located inGlacier Bay NationalPark.

Title 41 permit may benecessary. ContactADNR.

FOSC HistoricProperties Specialistshould MONITOR on-site operations.

See Figure G-3-12 forequipment locations.

Tested: not yet

Surveyed: 5/15/02 NPS,TLR

SE06-07-03 Dundas Bay

(confluence of NW andSW arms)

a. Lat. 58º 23.2 NLon. 136º 25.0 W

b. Lat. 58º 22.7 NLon. 136º 23.8 W

Deflection

Deflect non-persistent oilsaway from wetlands andmudflats.

Deploy 1500 ft. of boom at angleappropriate for current velocity. Heaviestconcentration of oil is likely to be fromnortheast.

a. 300 ft.

b. 1200 ft. (three 400 ft. arrays)

DeploymentEquipment

1500 ft. protected-water boom.4 ea. ~40 lbs. anchor systems.7 ea ~40 lbs. anchor systems for

securing boom every 500 ft.1 ea. anchor stakesVessels/Personnel/TendingUse resources listed in SE06-07-02

See SE06-07-02 See SE06-07-02 See SE06-07-02 See SE06-07-02

Located in a NationalPark.

Tested: not yet

Surveyed: 5/15/02 NPS,TLR

SE06-07-04 Dundas BayOld Dundas River mouth

(fossil river)

Lat. 58º 22.7 NLon. 136º 23.8 W

Passive Recovery

Minimize impact to designatedarea through passive recoveryusing snare line or sorbentboom.

Place 500 ft. snare line or sorbent boomacross mudflats. Anchor with stakes.Replace oiled sections as needed.

Use snare line for persistent oils andsorbent boom for non-persistent.

DeploymentEquipment

500 ft. snare line or sorbent boom10 ea. anchor stakesVessels / Personnel / Ten dingUse resources listed in SE06-07-02

See SE06-07-02 See SE06-07-02 See SE06-07-02 See SE06-07-02