Katahdin Analytical Services - Preservation Guide

Preservation Guide

**Municipal & Industrial Wastewater Analysis (NPDES)**
INORGANICS
Parameter	Typical Method(s)	Sample Container/ Preservative	Preferred Volume (mL)	EPA Holding Time
Acidity	EPA 305.1	P, G/4°C	100	14 Days
Alkalinity	EPA 310.1	P, G/4°C	100	14 Days
Bacteria, Fecal Coliform	Standard Method 909C	P, G/4°C	100	6 Hours
Bacteria, Total Plate Count	Standard Method 907	P, G/4°C	100	48 Hours
Biochemical Oxygen Demand (TBOD), 5 Day Total	EPA 405.1	P, G/4°C	500	48 Hours
Biochemical Oxygen Demand (CBOD), 5 Day Carbonaceous	EPA 405.1	P, G/4°C	500	48 Hours
Bromide	EPA 320.1	P, G	500	28 Days
Chemical Oxygen Demand (COD)	EPA 410.1/410.2	P, G/4°C, H₂SO₄ to pH < 2	250	28 Days
Chloride	EPA 325.2/325.3	P, G	100	28 Days
Chlorine, Residual	EPA 330.1, Field	P, G/No Headspace	100	Immediately
Color	EPA 110.3	P, G/4°C	100	48 Hours
Cyanide, Total (CN)	EPA 335.2	P, G/4°C, NaOH to pH > 12	500	14 Days
Hardness, Total (CaCo₃)	EPA 130.2/SM 2340B	P, G, HNO₃ to pH < 2	250	6 Months
Ion Chromatography (Including common anions such as Br, Cl, NO₂, NO₃, PO₄, SO₄)	EPA 300	P, G/4°C	250	As per individual anion listing
Nitrogen, Ammonia (NH₃)	EPA 350.1/350.2	P, G/4°C, H₂SO₄ to pH < 2	250	28 Days
Nitrogen, Total Kjeldahl (TKN)	EPA 351.2/351.3	P, G/4°C, H₂SO₄ to pH < 2	100	28 Days
Nitrogen, Nitrate & Nitrite	EPA 353.2	P, G/4°C, H₂SO₄ to pH < 2	100	28 Days
Nitrogen, Organic	EPA 351.3	P, G/4°C, H₂SO₄ to pH < 2	100	28 Days
Odor	EPA 140.1	G/4°C	1000	24 Hours
Oil & Grease	EPA 413.1/413.2	G/4°C, H₂SO₄ or HCl to pH < 2	1000	28 Days
Oxygen, Dissolved	EPA 360.1	G - Bottle & Top	500	Immediately
Phenolics, Total Recoverable	EPA 420.1	G/4°C, H₂SO₄ to pH < 2	1000	28 Days
Phosphorus, Orthophosphate	EPA 365.1/365.2	P, G/4°C	100	48 Hours
Phosphorus, Total (TPO₄)	EPA 365.1/365.2	P, G/4°C, H₂SO₄ to pH < 2	100	28 Days
Priority Pollutant Metals	EPA 200/7000	P, G. HNO₃ to pH < 2	500	6 Months/ Hg 28 Days
Silica, Dissolved	EPA 370.1	P/4°C	100	28 Days
Solids, Settleable (SS)	EPA 160.5	P, G/4°C	1000	48 Hours
Solids, Suspended Volatile	Standard Method 209A	P, G/4°C	100	7 Days
Solids, Total (TS)	EPA 160.3	P, G/4°C	100	7 Days
Solids, Total Dissolved (TDS)	EPA 160.1	P, G/4°C	100	7 Days
Solids, Total Suspended (TSS)	EPA 160.2	P, G/4°C	100	7 Days
Solids, Total Volatile (TVS)	EPA 160.4	P, G/4°C	100	7 Days
Specific Conductance	EPA 120.1	P, G/4°C	100	28 Days
Sulfate (SO₄)	EPA 375.4	P, G/4°C	100	28 Days
Sulfide, Total	EPA 376.1	P, G/4°C, NaOH + Zn acetate to pH > 9	500	7 Days
Sulfite	EPA 377.1	P, G	500	Immediately
Total Organic Carbon (TOC)	EPA 415.1	P, G/4°C, H₂SO₄ or HCl to pH < 2	100	28 Days
Total Organic Halogen (TOX)	EPA 450.1	GA/4°C	500	14 Days
Total Petroleum Hydrocarbons (TPH)	EPA 418.1	G/4°C, HCl to pH < 2	1000	28 Days

Guide Notes & Abbreviations

Sample Containers:
- G = Glass
- A = Amber
- P = Plastic, polyethylene bottle with a polypropylene cap
- GA = Glass amber bottle with a Teflon lined cap
- VOA = Volatile organic 40 ml vial with a Teflon lined cap
Preservatives:
- HCl = Hydrochloride Acid
- H₂SO₄ = Sulfuric Acid
- NHO₃ = Nitric Acid
- NaOH = Sodium Hydroxide
- Zn + Acetate = Zinc + Acetate
  * Preserve soil samples to 4° C; contact laboratory for proper sample container.
Regulations:
- SDWA = Safe Drinking Water Act
- NPDES = National Pollutant Discharge Elimination System
- RCRA = Resource Conservation Recovery Act
Note:
- The methods shown are those commonly employed in performing environmental analyses. It is not intended to be inclusive of all possible EPA analytical methods or to indicate that Katahdin Analytical Services routinely provides the methods or parameters shown. The information provide is current as of March 1996.

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