Jean Snyder, Program Lead Office of Environmental Health and Safety - - PowerPoint PPT Presentation

Public Health – Always Working for a Safer and Healthier Washington

Jean Snyder, Program Lead Office of Environmental Health and Safety Washington State Department of Health June 28, 2017

 Classify growing areas  License and certify

companies

 Manage naturally-occurring

pathogens

 Investigate illnesses  Education and outreach

S a n ita r y S u r v e y W a te r Q u a lit y S tu d y M e te

• r
• lo

g y & H y d r

• g

r a p h y S h

• r

e lin e S u r v e y

: open to harvest, except emergency closures : closed during predictable pollution events : shellfish must be relayed : closed to harvest : prohibited for commercial, advisory for recreational

South th Skagit git Bay Port t Susan an Possession ion Sound

Marine stations placed near potential pollution sources.

• Developed areas and marinas
• Streams and drainages
• Livestock access to water
• Areas with limited flushing
• Sample for adverse or worse case conditions to be protective of human health

Sample each station 6 – 12 times per year. A minimum of 30 samples per station used for calculation. Fecal coliform (FC) standard is stringent.

• ≤ 14 FC/100 mL Geometric mean
• ≤ 43 FC/100 mL – Estimated 90th percentile
• 90% of data are below this number, 10% are above.
• Formula uses logs of individual results and standard deviation of dataset.

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Station Number Classification Date Range Range (FC/100 mL) GeoMean (FC/100 mL) Est 90th Percentile (FC/100 mL) Meets Standard 290 Approved 7/18/2013 - 12/5/2016 1.7 - 95.0 3.8 14.4 Yes 291 Approved 9/25/2013 - 12/5/2016 1.7 - 170.0 5.5 30.9 Yes 292 Approved 9/25/2013 - 12/5/2016 1.7 - 79.0 4.3 18.1 Yes 293 Approved 9/25/2013 - 12/5/2016 1.7 - 130.0 3.9 14.6 Yes 294 Approved 7/18/2013 - 12/5/2016 1.7 - 23.0 3.1 8.8 Yes 295 Approved 7/18/2013 - 12/5/2016 1.7 - 350.0 5.6 32.0 Yes 296 Approved 6/19/2013 - 12/5/2016 1.7 - 33.0 4.1 15.2 Yes 297 Approved 8/27/2013 - 12/5/2016 1.7 - 350.0 8.6 45.8 No 298 Approved 8/27/2013 - 12/5/2016 1.7 - 110.0 6.0 27.1 Yes 335 Approved 9/25/2013 - 12/5/2016 1.7 - 79.0 5.3 24.5 Yes 344 Approved 6/19/2013 - 5/3/2017 1.7 - 13.0 2.6 5.4 Yes 345 Approved 6/19/2013 - 5/3/2017 1.7 - 22.0 2.5 5.5 Yes 346 Approved 3/21/2013 - 5/3/2017 1.7 - 33.0 2.5 6.5 Yes 299 Prohibited 7/18/2013 - 12/5/2016 1.7 - 240.0 7.2 34.7 Yes 357 Unclassified 4/16/2013 - 5/3/2017 1.7 - 70.0 3.0 9.1 Yes 411 Unclassified 7/7/2016 - 5/3/2017 1.8 - 70.0 14.1 N/A *N/A

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Station 297

Classification: Approved Meets Standard: Yes Total Samples: 30 Range (FC/100 mL): 1.7 – 350.0 GeoMean (FC/100mL): 8.6 E90th (FC/100mL): 45.8 Sample Date Event Type Time Tide Surface Water Temperature Salinity (ppt) Fecal Coliform (FC/100mL) 08/27/2013 Regulatory 10:59 Flood 18 23 23.0 09/25/2013 Regulatory 11:03 Ebb 14 18 23.0 10/24/2013 Regulatory 10:17 Ebb 12 27 2.0 11/12/2013 Regulatory 10:52 Flood 9 12 23.0 12/09/2013 Regulatory 10:41 Flood 2 14 7.8 01/30/2014 Regulatory 11:35 Flood 7 7 34.0 03/26/2014 Regulatory 13:33 Flood 9 3 4.5 04/21/2014 Regulatory 09:12 Flood 9 1 13.0 05/19/2014 Regulatory 08:01 Flood 14 2 13.0 06/16/2014 Regulatory 07:13 Flood 13 12 17.0 07/21/2014 Regulatory 14:10 Flood 22 17 2.0 08/18/2014 Regulatory 13:11 Flood 21 23 1.7 09/02/2014 Regulatory 12:01 Flood 18 23 2.0 11/17/2014 Regulatory 14:03 Ebb 7 20 17.0 12/15/2014 Regulatory 12:52 Ebb 5 3 7.8 01/14/2015 Regulatory 12:15 Ebb 6 8 4.5 02/11/2015 Regulatory 10:34 Ebb 8 11.0 03/12/2015 Regulatory 09:55 Flood 11 16 6.1 04/23/2015 Regulatory 09:31 Ebb 11 12 4.0 05/28/2015 Regulatory 14:25 Flood 23 21 2.0 07/07/2015 Regulatory 09:16 Flood 20 27 1.7 08/20/2015 Regulatory 09:54 Flood 19 25 7.8 310/20/2015 Regulatory 12:45 Ebb 14 21 1.7 12/07/2015 Regulatory 10:33 Flood 7 1 17.0 01/19/2016 Regulatory 13:46 Ebb 6 3 17.0 03/15/2016 Regulatory 11:10 Ebb 6 2 7.8 07/07/2016 Regulatory 07:49 Ebb 16 23 17.0 09/08/2016 Regulatory 11:41 Ebb 17 23 1.7 11/07/2016 Regulatory 13:05 Ebb 10 1 350.0 12/05/2016 Regulatory 10:10 Ebb 7 9 130.0

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Proposed posed Prohi

• hibit

bited ed Area (~1 ~185 85 acr cres)

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Shellfish Protection District

• State Law requires formation of Shellfish

Protection District when shellfish harvest is restricted due to nonpoint fecal coliform pollution

• Stillaguamish Clean Water District (1993)
• Closure Response Plans
• Pollution Control - PIC
• Education/Outreach
• Funding