mdfw hatchery npdes program ken simmons chief of hatcheries/trout project leader
TRANSCRIPT
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MDFW Hatchery NPDES ProgramKen Simmons
Chief of Hatcheries/Trout Project Leader
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MDFW HATCHERIES
• Sandwich Hatchery (1912) -Trout*• Sunderland Hatchery (1913) - Trout*• Palmer Hatchery (1914) - Atlantic salmon• Montague Hatchery (1917) - Trout*• McLaughlin Hatchery (1969) - Trout*
*NPDES permit required
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NPDESFour MDFW Trout Hatchery
Permits Renewed in Past Year
• Observations on the process
• Formalin
Discuss Today
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Impact on Hatchery Operations
• Discharge limits were not substantially changed
• Frequency of effluent sampling was reduced
• Effluent sampling quarterly and only during major cleaning operations
continued
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Impact on Hatchery Operations
• Increased use of settling pools at 3 older DFW facilities
• Reduced production at 3 older facilities
• Greatly altered operations at 3 older facilities
• Formalin use all but eliminated at 3 older facilities
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Impact on Pounds of Trout Produced
Old Permit Current Permit
McLaughlin 225,000 225,000
Sunderland 115,000 90,000
Montague 90,000 80,000
Sandwich 62,000 50,000
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Effluent Monitoring
• Flow• BOD• TSS• pH• Dissolved oxygen• Total ammonia
nitrogen, as N*
• Residual chlorine*• Total phosphorous*• Formaldehyde• Whole Effluent
Toxicity - chronic**• Whole Effluent
Toxicity - acute**
*Not at all facilities **New to current permit
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Effluent Sampling
• Quarterly (except pH, formalin & chlorine)
• Three of the quarterly samples must be taken when conducting pool breakdown and/or settling pool or quiescent zone cleaning
• One quarterly sample must be taken during annual pool breakdown/cleaning
• Composite samples -- 1 per hour for 8 hours
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Formalin Use• Discharge limit of 0.74
mg/l (formaldehyde) at all facilities
• Developed formalin use plan for each hatchery as part of B.M. P.
• Do not know if it will work except at McLaughlin Hatchery
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Formalin Use Problems
• 0.74 mg/l limit effectively eliminates use at 3 of 4 facilities due to flow patterns and dilution factors
• Difficult to retain a certified lab that can analyze formaldehyde with E.P.A. methods on short notice
• W.E.T. tests - labs to conduct work on short notice
• Cost of tests
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Whole Effluent Toxicity (%) Acute (invertebrates only)
AverageMonthly
Max.Daily
FrequencyMeasured
SampleType
MAC Acute LC50 > 100% * Comp.
SUND Acute LC50 > 100% * Comp.
MONT Acute LC50 > 100% * Comp.
SAND Acute LC50 > 100% * Comp.
*If formalin is used
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Whole Effluent Toxicity (%) Chronic (invertebrates only)
AverageMonthly
Max.Daily
FrequencyMeasured
SampleType
MAC Chronic C-NOEC > 100% * Comp.
SUND Chronic C-NOEC > 100% * Comp.
MONT Chronic C-NOEC > 100% * Comp.
SAND Chronic C-NOEC > 100% * Comp.
*If formalin is used
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My Thoughts
• Agency must play an active role in the process
• Develop & maintain a professional working relationship with the regulators
• Be honest and forthcoming with information
• Do not hesitate to ask questions or seek clarification of issues
• Exercise your right to seek change and/or clarification of pre-public draft permits
• Tremendous amount of work involved
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Summary
• We do not yet know if we will be able to meet new effluent limits at all stations but have developed BMP’s with that goal
• Formalin use at 3 of 4 hatcheries is all but impossible
• Formalin use at McLaughlin Hatchery is feasible but with constraints
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Thank You
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FLOW (MGD)
AverageMonthly
Max.Daily
FrequencyMeasured
SampleType
MAC 7.0 8.1 Cont. Rec.
SUND 1.17 1.68 Daily Instan.
MONT 1.4 1.55 Daily Instan.
SAND 1.4 1.6 Daily Instan.
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BOD (mg/l)
AverageMonthly
Max.Daily
FrequencyMeasured*
SampleType
MAC 5 10 Quart. Comp.
SUND 5 10 Quart. Comp.
MONT 5 10 Quart. Comp.
SAND 5 5 Quart. Comp.
*During cleaning operations
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TSS (mg/l)
AverageMonthly
Max.Daily
FrequencyMeasured*
SampleType
MAC 10 10 Quart. Comp.
SUND 10 10 Quart. Comp.
MONT 10 10 Quart. Comp.
SAND 10 10 Quart. Comp.
*During cleaning operations
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Total Phosphorous (mg/l)
AverageMonthly
Max.Daily
FrequencyMeasured*
SampleType
MAC *** 1.0 Quart. Grab
SUND *** Report Quart. Grab
MONT *** Report Quart. Grab
SAND None None None
*During cleaning operations ***No limit issued
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Total Ammonia Nitrogen, as N (mg/l)
AverageMonthly
Max.Daily
FrequencyMeasured*
SampleType
MAC 4.2 *** Quart. Comp.
SUND None None None
MONT None None None
SAND 6 10 Quart. Comp.
*During cleaning operations ***No limit issued
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Total Residual Chlorine (ug/l)
AverageMonthly
Max.Daily
FrequencyMeasured
SampleType
MAC None None None
SUND None None None
MONT None None None
SAND 7.5 13 If used Grab