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What happens to the What happens to the Samples after collection? Samples after collection? Just what Just what DOES DOES the lab do with the lab do with samples after they are collected? samples after they are collected? Denise L. Seman City of Youngstown Wastewater

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Page 1: Just what DOES the lab do with samples after they are ... What happens to the Samples after...samples after they are collected? ... We do Oil & grease by EPA method ... analyzed by

What happens to the What happens to the Samples after collection?Samples after collection?

Just what Just what DOESDOES the lab do with the lab do with samples after they are collected?samples after they are collected?

Denise L. Seman

City of Youngstown Wastewater

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Explanation of sample typesExplanation of sample types

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GrabGrab

A single, one time A single, one time ““grabgrab””of sampleof sample

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GrabGrab

analysis of pH, temperature, cyanide, analysis of pH, temperature, cyanide, total phenols, residual chlorine, oil total phenols, residual chlorine, oil and grease, fecal coliform (including and grease, fecal coliform (including E. coli), and Enterococci (previously E. coli), and Enterococci (previously known as fecal streptococcus ), or known as fecal streptococcus ), or volatile organics, grab samples must volatile organics, grab samples must be collected for those pollutants. be collected for those pollutants. 40 40 CFR Part 136 CFR Part 136

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CompositeComposite

a 24a 24--hour composite sample, hour composite sample, using a minimum of four (4) grab using a minimum of four (4) grab samples, must be used unless samples, must be used unless specified otherwise at 40 CFR specified otherwise at 40 CFR Part 136 Part 136

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CompositeComposite

Multiple samples grabbed, then Multiple samples grabbed, then placed together into the same placed together into the same containercontainer

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Youngstown samplerYoungstown sampler

ISCO externalISCO external ISCO internalISCO internal

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Struthers samplerStruthers sampler

SigmaSigma Sigma controllerSigma controller

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CarboysCarboys

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Characteristics and Characteristics and sampling frequency are sampling frequency are determined by the NPDES determined by the NPDES permitpermit

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Common characteristics include: Common characteristics include: CBODCBOD TSSTSS NH3NH3 Total PhosphorousTotal Phosphorous TemperatureTemperature pHpH DODO

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Characteristics we monitor/test for:Characteristics we monitor/test for: Temperature, DO, TSS, Oil & GreaseTemperature, DO, TSS, Oil & Grease NitrogenNitrogen-- Ammonia, NitrateAmmonia, Nitrate--nitrite, TKNnitrite, TKN Total Phosphorous, Hexavalent Total Phosphorous, Hexavalent

ChromiumChromium Free Cyanide, Chloroform, CBODFree Cyanide, Chloroform, CBOD Flow rate, Fecal coliforms, MercuryFlow rate, Fecal coliforms, Mercury

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Characteristics we monitor/test for:Characteristics we monitor/test for: Total residual chlorineTotal residual chlorine Metals, total recoverable: Nickel, Silver, Metals, total recoverable: Nickel, Silver,

Zinc, Cadmium, Lead, Chromium, Zinc, Cadmium, Lead, Chromium, CopperCopper

Bioassay: Acute & Chronic toxicity Bioassay: Acute & Chronic toxicity ––both fatboth fat--head minnows and water fleashead minnows and water fleas

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Grab SamplesGrab Samples

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Daily pH, temperature and dissolved Daily pH, temperature and dissolved oxygen (D.O.) check to ensure the oxygen (D.O.) check to ensure the automatic system stays in calibration for automatic system stays in calibration for both the raw and final. both the raw and final.

Grab samples, analyzed within 15 minutes Grab samples, analyzed within 15 minutes of collection/ delivery to labof collection/ delivery to lab

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pH and temperature are pH and temperature are checked on a Thermo checked on a Thermo scientific 5 star meter/ probescientific 5 star meter/ probe

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D.O. is checked on a YSI D.O. is checked on a YSI meter/ probemeter/ probeAlso commonly used are Also commonly used are

ThermoThermo--Orion meter/ probe Orion meter/ probe combocombo

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Youngstown:Youngstown:YSI system YSI system

Geneva:Geneva:ThermoThermo--Orion systemOrion system

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Chlorine residual is tested/ Chlorine residual is tested/ monitored 3 times daily during the monitored 3 times daily during the summer months to report a summer months to report a maximum discharge maximum discharge concentrationconcentration

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Chlorine concentration is also Chlorine concentration is also checked once daily at the base of checked once daily at the base of the cascade, and again after the the cascade, and again after the contact tanks to ensure adequate contact tanks to ensure adequate chlorine is being applied for chlorine is being applied for disinfection.disinfection.

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Chlorine residual is checked by Chlorine residual is checked by amperometric titrationamperometric titration

Permit limit is 0.024 mg/L, ML is 0.050 Permit limit is 0.024 mg/L, ML is 0.050 mg/L according to the EPA. Violations do mg/L according to the EPA. Violations do not occur until the ML has been exceeded.not occur until the ML has been exceeded.

Grab samples, analyzed within 15 minutes Grab samples, analyzed within 15 minutes of collection/ delivery to labof collection/ delivery to lab

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Fecal coliforms, total coliforms and E. coli Fecal coliforms, total coliforms and E. coli are daily tests during the summer monthsare daily tests during the summer months

Samples must be analyzed within 6 hours Samples must be analyzed within 6 hours of collection.of collection.

Samples are incubated for 24 hours before Samples are incubated for 24 hours before reading.reading.

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Filtering setFiltering set

Magnetic funnelMagnetic funnel Glass funnelGlass funnel

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Oil & Grease samples are grab samples, Oil & Grease samples are grab samples, but can be preserved with acid to a pH <2 but can be preserved with acid to a pH <2 and stored for up to 28 days.and stored for up to 28 days.

We do Oil & grease by EPA method We do Oil & grease by EPA method 1664A, automated solid phase extraction 1664A, automated solid phase extraction with nwith n--hexanehexane

Can also be done by liquid to liquid Can also be done by liquid to liquid extractionextraction

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CompositeComposite

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Composite samples are brought Composite samples are brought into the lab, where they are split into the lab, where they are split out according to the requirements out according to the requirements for the dayfor the day’’s analysis.s analysis.

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Total suspended solids analysis are Total suspended solids analysis are performed daily performed daily

Samples can be held, unpreserved, for up Samples can be held, unpreserved, for up to 28 days at </= 6to 28 days at </= 6ooCC

Samples are analyzed in accordance with Samples are analyzed in accordance with SM 2540SM 2540--D. D.

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CBODCBOD’’s are collected daily. s are collected daily.

Samples can be held, unpreserved, for up Samples can be held, unpreserved, for up to 48 hours after collection at </= 6to 48 hours after collection at </= 6ooCC

Sample sets are put on for analysis on Sample sets are put on for analysis on Monday, Wednesday and Friday.Monday, Wednesday and Friday.

There is a 5 day incubation periodThere is a 5 day incubation period

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BOD incubatorsBOD incubators

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Metals samples: Cd, Cr, Cu, Pb, Ni, Zn, Metals samples: Cd, Cr, Cu, Pb, Ni, Zn, Ag for raw and final are collected once Ag for raw and final are collected once every 2 weeks.every 2 weeks.

Samples are preserved with acid to a pH Samples are preserved with acid to a pH <2 and can be held for up to 6 months.<2 and can be held for up to 6 months.

Samples are digested for total recoverable Samples are digested for total recoverable metals in a programmable hot block, in metals in a programmable hot block, in accordance with EPA method 200.7accordance with EPA method 200.7

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Hot block digestersHot block digesters

YoungstownYoungstown GenevaGeneva

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Sludge metals, composited, are prepped Sludge metals, composited, are prepped in the hot block, but the digestion step in the hot block, but the digestion step includes heating with a 30% hydrogen includes heating with a 30% hydrogen peroxide solution to break any organic peroxide solution to break any organic bondsbonds

Sludge metals are collected once a month, Sludge metals are collected once a month, by compositing over an 8 to 16 hour periodby compositing over an 8 to 16 hour period

Sludge is analyzed for As, Be, Cd, Cr, Cu, Sludge is analyzed for As, Be, Cd, Cr, Cu, Pb, Ni, Mo, Se, ZnPb, Ni, Mo, Se, Zn

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Prepped, digested metals samples are Prepped, digested metals samples are analyzed by ICP, in accordance with EPA analyzed by ICP, in accordance with EPA method 200.7method 200.7

Metals can also be analyzed by AAMetals can also be analyzed by AA

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ICPICP

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AAAA

Struthers Flame AAStruthers Flame AA Struthers Furnace AAStruthers Furnace AA

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Phenols (industrial and background Phenols (industrial and background samples only)samples only)

Batch analysis, including a digested blank, Batch analysis, including a digested blank, standard, duplicate and spikestandard, duplicate and spike

Analyzed on the Westco SmartchemAnalyzed on the Westco Smartchem

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Smartchem SpecSmartchem Spec

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SpecsSpecs

StruthersStruthers GenevaGeneva

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Also analyzed on the Westco Also analyzed on the Westco Smartchem:Smartchem: Hexavalent ChromiumHexavalent Chromium NitrateNitrate--nitritenitrite TKNTKN Total PhosphorousTotal Phosphorous

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TKN and total phosphorous digested on TKN and total phosphorous digested on Westco Smartdigest (in Youngstown) Westco Smartdigest (in Youngstown)

Other digestion apparatus for TKN are Other digestion apparatus for TKN are hot block systemhot block system

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TKN digestionTKN digestion

Smart blockSmart block Hot blockHot block

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Mercury samples (industries, background, Mercury samples (industries, background, and sludge) are prepped automatically in and sludge) are prepped automatically in the Environmental Express Autoblock IIthe Environmental Express Autoblock II

Analyzed by cold vapor analysis on a Analyzed by cold vapor analysis on a Leeman Labs AnalyzerLeeman Labs Analyzer

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Glassware for mercury, total metals and Glassware for mercury, total metals and total phosphorous acid cleaned in the total phosphorous acid cleaned in the Milestone TracecleanMilestone Traceclean

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After all analysis is complete, samples are dumped, containers are cleaned and the process begins again.

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Questions?Questions?