Water quality monitoring and fecal coliform standard. Alex Manderson Food Safety and Animal Health Program Oregon Department of Agriculture

Transcription

1 Water quality monitoring and fecal coliform standard Alex Manderson Food Safety and Animal Health Program Oregon Department of Agriculture

2 A Cooperative Program Four components to help keep contaminated molluscan shellfish out of the marketplace: 1. Classifying growing areas based on water quality. 2. Inspecting facilities that handle shellfish for proper sanitation. 3. Patrolling to deter illegal harvesting. 4. Conducting laboratory testing and analysis of shellfish and water samples

3 Federal Shellfish Regulation National Shellfish Sanitation Program (NSSP): Guide for the Control of Molluscan Shellfish Shellfish equivalent of the PMO. Developed through debate at ISSC conferences. FDA final say.

4 Interstate Shellfish Sanitation Conference (ISSC) Cooperation of state and federal control agencies, the shellfish industry, and the academic community. Adopts uniform procedures, incorporated into the National Shellfish Sanitation Program, and implemented by all shellfish control agencies.

5 FDA The states take the lead in accomplishing the core components of the cooperative program and have the authority to enforce compliance with the program. FDA provides training, guidance and technical assistance to help the states do their jobs.

6 State Shellfish Regulations ORS 622 OAR 100 (2) The department shall have power: (a) To inspect any dealer in every phase and locale of operation. (b) To take samples of any shellfish for bacteriological and toxicity study. (c) To condemn or remove from sale and destroy any shellfish which are unfit for human consumption, or are from an uncertified source, or are improperly certified. (d) To issue certificates of shellfish sanitation in accordance with the provisions of this chapter

7 GROWING AREA CLASSIFICATION

8 Sanitary Surveys Determines which classification the shellfish growing area will be: - Approved, Conditionally Approved, Restricted, Conditionally Restricted or Prohibited Required by the NSSP every 12 years Environmental factors Actual and Potential Sources of pollution Water Quality data (fecal coliforms)

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10 Shoreline Surveys Identify potential and actual sources of pollution: Survey those properties that can affect the GA Potential sources of pollution: onsite septic systems Actual sources of pollution = Prohibited Zones - - STPs, industrial areas, ports, marinas, etc. Door to door survey (two person teams)

11 Triennial Reviews Required every 3 years Review water quality (fecal coliforms) Re-evaluate known pollution sources Document and evaluate any new pollution sources Final Report

12 Annual Reviews - Review water quality data (fecal coliforms) - Review known pollution sources - Field observation of the GA for new pollution sources - Report

13 Review of water quality data Coordinate water samples from all growing areas either monthly or every other month. - Either industry or ODA. Review annually data for compliance with NSSP water quality standards. Determine appropriate classification.

14 Water quality analysis

15 Classification and management Rainfall or river height used as proxy for water quality. Rainfall and river height monitored 365 days. Closure and openings of commercial harvesting. 8 classified bays.

16 Growing Area Management Plan To comply with US Food and Drug Administration (FDA) standards for shellfish growing waters Coos Bay will be closed when conditions can be predicted to cause fecal coliform counts to exceed the standard in shellfish growing areas. Coos Bay will be closed under the following conditions When there is more than 1.5 of rain within a 24-hour period; or greater than 2.5 in 72 hours, the Upper Coos Bay Conditionally Approved Area is closed. When there is more than 1.0 of rain in a 24-hour period; or greater than 1.0 in 72 hours, the Pierce Point (previously East Bay) and Haynes Inlet conditionally approved areas are closed.

17 and opening. The Coos Bay conditionally approved area will remain closed a minimum ten high tides after the initial closure. For Upper Coos Bay conditionally approved area, the 3- day accumulative rainfall total must be less than 2.5 and the 24 hour rainfall total must be less than 1.50 for the day prior to opening. For Pierce Point area (previously East Bay) and Haynes Inlet conditionally approved area, the 3- day accumulative rainfall total and the 24 hour rainfall total must be less than 1.00 for the day prior to opening. During a closure, a subsequent peak in 3-day accumulated rainfall (rainfall that exceeds the amount that caused the closure) will reset the 10 high tide closure count when the peak is recorded.

18 Water sample collection Initial Certification: minimum of 30 samples collected that characterize the growing area throughout the seasons. Thereafter monthly for areas impacted by point sources of pollution. Every other month for non-point source impacted areas.

19 The standards. Geometric mean of 14 fc per 100 ml. No greater than 10% of samples above 43 fc per 100 ml. Each station assessed on this standard for entire growing area to meet the standard. Failure of a station to comply will require review and possible modification of the management criteria.

20 Questions?