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Presentation Given By: Margaret Homerding, Nisqually Tribe Shellfish Program Manager
Citation preview
Local Shellfish Growing Area Upgrades
& The [Upstream] Prac=ces That Allowed For Them
Margaret Homerding Shellfish Program Manager
Nisqually Indian Tribe June 21, 2013
Shellfish growing area classifica=on
• You can’t harvest shellfish from everywhere! – Bacterial loads of freshwater inputs
– Bacterial loads of marine water
– Bacterial loads and Toxin levels in shellfish meats
– Concentra=ons of pollutants in shellfish meat and sediment
Courtesy of Washington Department of Health
• Largely residen=al area – Older sep=c systems – Pets
• Lots of small farms – Manure
• Lots of roads • Road runoff
• Shellfish Farm
Photo courtesy of Puget Sound Partnership
Henderson Inlet Watershed
Photo courtesy of Puget Sound Partnership
Photo courtesy of Skokomish Indian tribe
Stewardship partners
Courtesy of Washington Department of Health
• Urban • Densely populated – Sewer ou[alls – Poten=al heavy metal pollu=on from industry
and roadways
JBLM/Chambers Creek Area
• EPA-‐funded NEP grant • 4 year project • Start date Oct. 1, 2010 • DOH lead; partners include Nisqually Tribe,
Department of Ecology
Joint Base Lewis-‐McChord/Chambers Creek Prohibited Area
Courtesy of WADOH
Elements of Study • An evalua=on of shellfish resources
• A human health assessment, including =ssue and sediment sampling
• Circula=on and dilu=on studies
Shellfish Resource Survey
• Qualita=ve Inter=dal Survey
• Underwater Towed Video Survey
• Sub=dal SCUBA Survey
Inter=dal Shellfish Survey
• Walking the shoreline at low =de • Digging samples of clams • Coun=ng oysters and other shellfish observed
• No=ng any cri=cal Habitat
Photo by Michael Kyte
Inter=dal Shellfish Survey
• Lifle to few clams or oysters
• Loss of habitat due to development
• armoring of shoreline
Underwater Video Survey
• Towing a video camera behind a boat • Must go slowly
• Constantly liging and dropping camera to stay close to the bofom
Underwater Video Survey
• Poten=al Geoduck and Horseclam beds
• Eelgrass beds
• SCUBA diving along set transects • Coun=ng geoduck and horseclams • No=ng any observed species
• Marking any cri=cal habitat
Sub=dal Shellfish Survey
Sub=dal Shellfish Survey
• Large tracts of geoduck beds
• Rela=vely few horse clams
• Several crabs
• Collec=ng sediment and geoduck samples
• Analysis of samples for likely contaminates
Human Health Assessment
• Contact or inges=on of sediments will not have deleterious affects to human health
• Inges=on of geoduck meat will not increase risk of disease
Human Health Assessment
Circula=on and dilu=on Studies
• Drogue study to verify =me of =de change
• Fluorometers installed in front of geoduck tracts and public beaches
• Dye injected for 24.8 hours • Dye tracked un=l gone
Mixing dye
Photo courtesy of W
ADOH
Dye injec=on into wet well ager UV
Photo courtesy of W
ADOH
Tracking Tracking the Dye
Photo courtesy of W
ADOH
Monday 11/12/12 morning Photo courtesy of W
ADOH
Preliminary Dye Study Results • Lifle or no dye got across channel or to north Ketron
• Dye was restricted between Sunnyside Beach to the south during flood =de and along the east shore north past Day Island Marina during ebb =de.
• Final closure zone for Chambers Creek WWTP should not impact Fox Island, McNeil Island or Ketron Island geoduck tracts.
Next steps
• Complete Sub=dal Resource Surveys • Dye injec=on study at JBLM Sewage treatment plant
• Recommenda=ons to state based on findings
• More projects
Resources • Mark Toy. Washington State Department of Health. Restoring Shellfish
Harvest to Joint Base Lewis-‐McChord/Chambers Creek Prohibited Area. 2013 Pacific Rim Shellfish Sanita=on Conference. Presented April 3, 2013
• Bradbury,A., Sizemore, R., Rothaus, D., Ulrich, M. Washington Stat eMarine Resources unit Fish Management Division Fish Program. Stock Assessment of Sub=dal Geoduck Clams (Panopea abrupta) in Washington. January 2000.
• Nisqually Reach and Henderson Inlet Shellfish Protec=on Districts Combined Shellfish District 2008 Annual Report. Available at: hfp://www.co.thurston.wa.us/planning/natural-‐res/docs/shellfish-‐annual-‐report-‐2008.pdf. Accessed 6/21/2013