Wisconsin Legislature: 002 - CR 15-049 Rule Text

27Hach Company Method, “Hach Company SPADNS 2 (Arsenite –free) Fluoride Method 10255-Spectrophotometric Measurement of Fluoride in Water and Wastewater,” January 2011. 5600 Lindbergh Drive, P.O. Box 389, Loveland , Colorado 80539. Available at http://www.hach.com.

28Systea Easy (1-Reagent). “Systea Easy (1-Reagent) Nitrate Method,” February 4, 2009. Available at http://www.nemi.gov or from Systea Scientific, LLC., 900 JorieBlvd., Suite 35, Oak Brook, IL 60523.

29Mitchell Method M5271, Revision 1.1.” Determination of Turbidity by Laser Nephelometry,” March 5, 2009. Available at http://www.nemi.gov or from Leck Mitchell, PhD, PE, 656 Independence Valley Dr., Grand Junction, CO 81507.

30Mitchell Method M5331, Revision 1.1. “Determination of Turbidity by LED Nephelometry,” March 5, 2009. Available at http://www.nemi.gov or from Leck Mitchell, PhD, PE, 656 Independence Valley Dr., Grand Junction, CO 81507.

31AMI Turbiwell. “Continuous Measurement of turbidity Using a SWAN AMI Turbiwell Turbidimeter,” August 2009. Available at http://www.nemi.gov or from Markus Bernasconi, SWAN Analytische Instrumente AG, Studbachstrasse 13, CH-8340 Hinwil, Switzerland.

32Orion Method AQ4500, Revision 1.0. “Determination of Turbidity by LED Nephelometry,” May 8, 2009. Available at http://www.nemi.gov or from Thermo Scientific, 166 Cummings Center, Beverly, MA 0`9`5, http://www.thermo.com.

33Hach FilterTrak Method 10133, “Determination of Turbidity by Laser Nephelomemtry,” January 2000, Revision 2.0. Available from Hach Co., P.O. Box389, Loveland, CO 80539-0389.

SECTION 24.

NR 809.113 (2) Table B is amended to read:

TABLE B

Sample Preservation, Containers and Maximum Holding Times for Inorganic Parameters

Parameter

Preservation1

Container2

Holding Time3

METALS

Aluminum

HNO3

P or G

6 months

Antimony

HNO3

P or G

6 months

Arsenic

Conc.HNO3 to pH<2

P or G

6 months

Barium

HNO3

P or G

6 months

Beryllium

HNO3

P or G

6 months

Cadmium

HNO3

P or G

6 months

Copper

HNO3

P or G

6 months

Chromium

HNO3

P or G

6 months

Iron

HNO3

P or G

6 months

Lead

HNO3

P or G

6 months

Manganese

HNO3

P or G

6 months

Mercury

HNO3

P or G

28 days

Nickel

HNO3

P or G

6 months

Selenium

HNO3

P or G

6 months

Silver

HNO3

P or G

6 months

Thallium

HNO3

P or G

6 months

Zinc

HNO3

P or G

6 months

OTHER PARAMETERS

Asbestos

Cool, 4°C

P or G

48 hours4

Bromate

Ethylenediamine

P or G

28 days

Chloride

None

P or G

28 days

Chlorite

50 mg/L EDA, Cool to 4°C

P or G

14 days

Color

Cool, 4°C

P or G

48 hours

Cyanide

Cool, 4°C+NaOH to pH>12

P or G

14 days

Fluoride

None

P or G

28 days

Foaming Agents

Cool, 4°C

P or G

48 hours

Nitrate (as N)
Chlorinated
Non-Chlorinated

Cool, 4°C
Cool, 4°C

P or G
P or G

14 days
48 hours5

Nitrite (as N)

Cool, 4°C

P or G

48 hours

Nitrate + Nitrite6

Conc. H2SO4 to pH<2

P or G

1428 days

Odor

Cool, 4°C

48 hours

None

P or G

Analyze Immediately

Solids (TDS)

Cool, 4°C

P or G

7 days

Sulfate

Cool, 4°C

P or G

28 days

Turbidity

Cool, 4°C

P or G

48 hours

1 If HNO3 cannot be used because of shipping restrictions, sample may be initially preserved by icing and immediately shipping it to the laboratory. Upon receipt in the laboratory, the sample must be acidified with conc HNO3 to pH < 2. At time of analysis, sample container should be thoroughly rinsed with 1:1 HNO3; washings should be added to sample.1 For cyanide determinations samples must be adjusted with sodium hydroxide to pH 12 at the time of collection. When chilling is indicated the sample must be shipped and stored at 4 °C or less. Acidification of nitrate or metals samples may be with a concentrated acid or a dilute (50% by volume) solution of the applicable concentrated acid. Acidification of samples for metals analysis is encouraged and allowed at the laboratory rather than at the time of sampling provided the shipping time and other instructions in Section 8.3 of EPA Methods 200.7 or 200.8 or 200.9 are followed.

2 P = plastic, hard or soft. G = glass, hard or soft.

3 In all cases, samples should be analyzed as soon after collection as possible.

4 Instructions for containers, preservation procedures and holding times as specified in Method 100.2 must be adhered to for all compliance analyses including those conducted with Method 101.1.

5 If the sample is chlorinated, the holding time for an unacidified sample kept at 4°C is extended to 14 days.

6 Nitrate-nitrite refers to a measurement of total nitrate.

SECTION 25.

NR 809.113 (4) Table C is amended to read:

TABLE C

Detection Limits for Inorganic Contaminants

Contaminant

MCL (mg/l)

Methodology

Detection limit (mg/l)

Antimony

0.006

Atomic Absorption; Furnace

0.003

Atomic Absorption; Platform

0.00085

ICP-Mass Spectrometry

0.0004

Hydride-Atomic Absorption

0.001

Arsenic

0.010

Atomic Absorption; Furnace

0.001

Atomic Absorption; Platform—Stabilized Temperature

0.00056

Atomic Absorption; Gaseous Hydride

0.001

ICP-Mass Spectrometry

0.00147

Asbestos

7 MFL1

Transmission Electron Microscopy

0.01 MFL

Barium

Atomic Absorption; furnace technique

0.002

Atomic Absorption; direct aspiration

0.1

Inductively Coupled Plasma

0.002 (0.001)

Beryllium

0.004

Atomic Absorption; Furnace

0.0002

Atomic Absorption; Platform

0.000025

Inductively Coupled Plasma2

0.0003

ICP-Mass Spectrometry

0.0003

Cadmium

0.005

Atomic Absorption; furnace technique

0.0001

Inductively Coupled Plasma

0.001

Chromium

0.1

Atomic Absorption; furnace technique

0.001

Inductively Coupled Plasma

0.007 (0.001)

Cyanide

0.2

Distillation, Spectrophotometric3

0.02

Distillation, Automated, Spectrophotometric3

0.005

Distillation, Amenable, Spectrophotometric4

0.02

Distillation, Selective Electrode3, 4

0.05

UV, Distillation, Spectrophotometric9

0.0005

Micro Distillation, Flow Injection, Spectrophotometric3

0.0006

Ligand Exchange with Amperometry4

0.0005

Mercury

0.002

Manual Cold Vapor Technique

0.0002

Automated Cold Vapor Technique

0.0002

Nickel

X10.1

Atomic Absorption; Furnace

0.001

Atomic Absorption; Platform

0.00065

Inductively Coupled Plasma2

0.005

ICP-Mass Spectrometry

0.0005

Nitrate

10 (as N)

Manual Cadmium Reduction

0.01

Automated Hydrazine Reduction

0.01

Automated Cadmium Reduction

0.05

Ion Selective Electrode

Ion Chromatography

0.01

Capillary Ion Electrophoresis

0.076

Nitrite

1 (as N)

Spectrophotometric

0.01

Automated Cadmium Reduction

0.05

Manual Cadmium Reduction

0.01

Ion Chromatography

0.004

Capillary Ion Electrophoresis

0.103

Selenium

0.05

Atomic Absorption; furnace

0.002

Atomic Absorption; gaseous hydride

0.002

Atomic Absorption; Furnace

0.001

Atomic Absorption; Platform

0.00075

ICP-Mass Spectrometry

0.0003

1MFL = million fibers per liter >10 µm.

2Using a 2X preconcentration step as noted in Method 200.7. Lower MDLs may be achieved when using a 4X preconcentration.

3Screening method for total cyanides.

4Measures “free” cyanides when distillation, digestion, or ligand exchange is omitted.

5Lower MDLs are reported using stabilized temperature graphite furnace atomic absorption.

6The MDL reported for EPA method 200.9 (Atomic Absorption; Platform—Stablized Stabilized Temperature) was determined using a 2x concentration step during sample digestion. The MDL determined for samples analyzed using direct analyses ( i.e. , no sample digestion) will be higher. Using multiple depositions, EPA 200.9 is capable of obtaining MDL of 0.0001 mg/L.

7Using selective ion monitoring, EPA Method 200.8 (ICP-MS) is capable of obtaining a MDL of 0.0001 mg/L.

8Measures total cyanides when UV-digestor is used, and “free” cyanides when UV-digestor is bypassed.

SECTION 26.

NR 809.115 (1) (d), NR 809.115 (2) (intro) are amended to read:

NR 809.115 (1) (d) Water suppliers for all new public water systems or for public water systems that use a new source of water that begin operation after January 22, 2004 shall demonstrate compliance with the MCLs specified in s. NR 809.11 (2) in accordance with the requirements in this section. The water supplier shall also comply with the initial and routine sampling frequencies specified by the department to ensure a water supplier can demonstrate that the public water supply is in compliance with the MCLs. Routine and increased monitoring frequencies shall be conducted in accordance with the requirements of this section.

NR 809.115 (1) (d) (2) monitoring frequency for asbestos. Water suppliers shall moniotor monitor public water systems to determine compliance with the maximum contaminant level for asbestos specified in s. NR 809.11 (2) at the following frequencies:

SECTION 27.

NR 809.115 (2) (f) 2. is amended to read:

NR 809.115 (2) (f) 2. A pubic public water system vulnerable to asbestos contamination due both to its source water supply and corrosion of asbestos-cement pipe shall be sampled once at a tap served by asbestos-cement pipe and under conditions where asbestos contamination is most likely to occur.

SECTION 28.

NR 809.115 (3) (intro), (a), and (b) are amended to read:

NR 809.115 (3) monitoring frequency for MCLS MCLs other than asbestos, nitrate, and nitrite. The water supplier shall conduct monitoring for each community and non-transient, non-community water system to determine compliance with the MCLs specified in s. NR 809.11 (2) for antimony, arsenic, barium, beryllium, cadmium, chromium, cyanide, flouride mercury, nickel, selenium and thallium at the following frequencies : specified in this subsection. The water supplier shall conduct monitoring for each community water system to determine compliance with the MCL in s. NR 809.11 (2) for fluoride at the frequencies specified in this subsection.

NR 809.115 (3) (a) Initial monitoring. New community public water systems or community public water systems with new sources shall demonstrate compliance with the MCLs listed under s. NR 809.11(2) for antimony, arsenic, barium, beryllium, cadmium, chromium, cyanide, fluoride, mercury, nickel, selenium and thallium prior to initiating water service. New non-transient non-community public water systems or non-transient non-community public water systems with new sources shall take one sample for each contaminant listed in s. NR 809.11 (2) beginning with the year the public water system initiates service or the new water source is put into service. If a waiver from cyanide monitoring has been granted under par. (c) cyanide is not required to be sampled for in the initial monitoring.

NR 809.115 (3) (b) Routine monitoring. Groundwater sources shall be sampled at each sampling point during each compliance period as determined by the department. Water suppliers for public water systems having surface water sources or combined surface water and groundwater sources shall take one sample annually at each sampling point. If a waiver from cyanide monitoring has been granted under par. (c), cyanide is not required to be sampled for routine monitoring.

SECTION 29.

NR 809.117 (1) (f) is amended to read:

NR 809.117 (1) (f) Pubic Public water systems remain out of compliance with the MCLs for nitrate, nitrite, or combined nitrate and nitrite until the results of 4 consecutive quarterly samples are less than do not exceed the MCL. The department may specify alternate means for returning to compliance with the MCLs for nitrate, nitrite, or combined nitrate and nitrite. Alternate compliance agreements shall be in writing.

SECTION 30.

NR 809.203 (1) is amended to read:

NR 809.203 (1) Detection Limits. Detection as used in this section shall be defined as greater than or equal to the following concentrations for each contaminant:

Contaminant

Detection Limit (mg/L)

1. Alachlor

0.0002

2. Aldicarb

0.0005

3. Aldicarb sulfoxide

0.0005

4. Aldicarb sulfone

0.0008

5. Atrazine

0.0001

6. Benzo[a]pyrene

0.00002

7. Carbofuran

0.0009

8. Chlordane

0.0002

9. 2,4-D

0.0001

10. Dalapon

0.001

11. Dibromochloropropane

0.00002

12. Di(2-ethylhexyl)adipate

0.0060.0006

13. Di(2-ethylhexyl)phthalate

0.0060.0006

14. Dinoseb

0.0002

15. Diquat

0.0004

16. Endothall

0.009

17. Endrin

0.00001

18. Ethylene dibromide

0.00001

19. Glyphosate

0.006

20. Heptachlor

0.00004

21. Heptachlor epoxide

0.00002

22. Hexachlorobenzene

0.0001

23.Hexachlorocyclopentadiene

0.0001

24. Lindane

0.00002

25. Methoxychlor

0.0001

26. Oxamyl

0.002

27. Picloram

0.0001

28.Polychlorinated biphenyls (PCBs as decachlorobiphenyls)

0.0001

29. Pentachlorophenol

0.00004

30. Simazine

0.00007

31. Toxaphene

0.001

32. 2,3,7,8-TCDD (Dioxin)

0.000000005

33. 2,4,5-TP (Silvex)

0.0002

(2) analytical methods. Analysis for the synthetic organic contaminants listed in s. NR 809.20 shall be conducted using the methods prescribed in Table C CM.

SECTION 31.

NR 809.203 (3) Table C is renumbered Table CM and as renumbered is amended to read:

TABLE C CM

SDWA Approved Methodology for Synthetic Organic Contaminants

Contaminant

EPA Methods1

SM9

SM Online10

ASTM

Other

Regulated Parameters:

Synthetic Organic Chemicals

2,3,7,8-TCDD (dioxin)

1613

16131

2,4-D 2 (as acids, salts and esters)

515.2, 555, 515.1, 515.3, 515.4

D5317-93, 98 (Reapproved 2003)

2,4,5-TP 2 (Silvex)

515.2, 555, 515.1, 515.3, 515.4

6640 B,

6640 B-01, B-0611

D5317-93, 98 (Reapproved 2003)

Alachlor

507, 525.2,

525.32

508.1, 5058, 551.1

Atrazine 3

507, 525.2, 525.3 508.1, 5058, 551.1, 536

Syngenta4

AG-625

Benzo(a)pyrene

525.2, 525.3, 550, 550.1

Carbofuran

531.1, 531.2

66105.

6610 B

6610 B-04

Chlordane

508, 525.2, 525.3, 508.1, 505

Dalapon

552.1 515.1, 552.2, 515.3, 515.4, 552.3, 557

6640 B

6640 B-01, 06

Di(2-ethylhexyl)adipate

506, 525.2, 525.3

Di(2-ethylhexyl)phthalate

506, 525.2, 525.3

Dibromochloropropane (DBCP)

504.1, 551.1, 524.39

Dinoseb

515.2, 555, 515.1, 515.3, 515.4

6640 B

6640 B-01, 06

Diquat

549.2

Endothall

548.1

Endrin

508, 525.2, 525.3, 508.1, 505, 551.1

Ethylene dibromide (EDB)

504.1, 551.1, 524.39

Glyphosate

547

66516

6651 B

6651 B-01, B-06

Heptachlor

508, 525.2, 525.3, 508.1, 505, 551.1

Heptachlor Epoxide

508, 525.2, 525.3, 508.1, 505, 551.1

Hexachlorobenzene

508, 525.2, 525.3, 508.1, 505, 551.1

Hexachlorocyclopentadiene

508, 525.2, 525.3, 508.1, 505, 551.1

Lindane

508, 525.2, 525.3, 508.1, 505, 551.1

Methoxychlor

508, 525.2, 525.3, 508.1, 505, 551.1

Oxamyl

531.1, 531.2

66105

6610 B

6610 B-04

PCBs (as decachlorobiphenyl)

508A7

(as Aroclors)

508.1, 508, 525.2, 525,3 505

Pentachlorophenol

515.2, 525.2, 525.3, 555, 515.1, 515.3, 515.4

D5317-93, 98 (Reapproved 2003)

Picloram 2

515.2, 555, 515.1, 515.3, 515.4

6640 B

6640 B-01

D5317-93, 98 s(Reapproved 2003)

Simazine

507, 525.2, 525.3, 523, 536, 508.1, 5058, 551.1

Toxaphene

508, 508.1, 525.2, 525.3, 505

Unregulated Parameters:

Aldicarb

531.1, 531.2

66105

6610 B

6610 B-04

Aldicarb sulfone

531.1, 531.2

66105

6610 B

6610 B-04

Aldicarb Sulfoxide

531.1 , 531.2

66105

6610 B

6610 B-04

Aldrin

505, 508, 525.2, 525.3, 508.1

Butachlor

507, 525.2, 525.3

Carbaryl

531.1, 531.2

66105

6610 B

6610 B-04

Dicamba

515.1, 555, 515.2 515.3, 515.4

6640 B

6640 B-01, B-06

Dieldrin

505, 508, 525.2, 525.3, 508.1

3-Hydroxcarbofuran

531.1, 531.2

66105

6610 B

6610 B-04

Methomyl

531.1, 531.2

66105

6610 B

6610 B-04

Metolachlor

507, 525.2, 525.3, 508.1

Metribuzin

507, 525.2, 525.3, 508.1

Propachlor

507, 525.2, 525.3, 508.1

1 Method 1613, “Tetra− through Octa− Chlorinated Dioxins and Furans by Isotope Dilution. HRGC/HRMS, EPA−821/B−94/005, October 1994, Method 1613 can be used to measure 2, 3, 7, 8−TCDD (dioxin). This method is available from National Technical Information Service, NTIS PB95−104774EPA methods are available at http://epa.gov/safewater/methods/analyticalmethods_ogwdw.html.

2 Accurate determination of the chlorinated esters requires hydrolysis of the sample as described in EPA Methods 515.1, 515.2, 515.3, 515.4 and 555 and ASTM Method D 5317-93, 98 (Reapproved 2003).

3 Substitution of the detector specified in Method 505, 507, 508, or 508.1 for the purpose of achieving lower detection limits is allowed as follows: Either an electron capture or nitrogen phosphorus detector may be used provided all regulatory requirements and quality control criteria are met.

4 This method may not be used for the analysis of atrazine in any system where chlorine dioxide is used for drinking water treatment. In samples from all other systems, any result generated by Method AG-625 that is greater than one-half the maximum contaminant level (MCL) (in other words, greater than 0.0015 mg/L or 1.5 μg/L) must be confirmed using another approved method for this contaminant and should use additional volume of the original sample collected for compliance monitoring. In instances where a result from Method AG-625 triggers such confirmatory testing, the confirmatory result is to be used to determine compliance.

5 Method 6610 shall be followed in accordance with the “Supplement to the 18th edition of Standard Methods for the Examination of Water and Wastewater”, 1994, or with the 19th edition of Standard Methods for the Examination of Water and Wastewater, 1995, APHA; either publication may be used. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552 (a) and 1 CFR Part 51. Copies may be obtained from the American Public Health Association, 1015 Fifteenth Street, N.W., Washington, D.C., 2005. Other required analytical test procedures germane to conducting these analyses are contained in Technical Notes on Drinking Water Methods, EPA/600/R-94-173, October 1994, NTIS PB95-104766.

6 Method 6651 shall be followed in accordance with the “Standard Methods for the Examination of Water and Wastewater”, 18th Edition, 1992, and 19th edition, 1995, American Public Health Association. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552 (a) and 1 CFR Part 51. Copies may be obtained from the American Public Health Association, 1015 Fifteenth Street, N.W., Washington, D.C., 20005.

7 Method 505 or 508 can be used as a screen for PCBs. Method 508A shall be used to quantitate PCBs as decachlorobiphenyl if detected in Method 505 or 508. PCBs are qualitatively identified as Aroclors and measured for compliance purposes as decachlorobiphenyl

8 A nitrogen−phosphorus detector should be substituted for the electron capture detector in Method 505 (or a different approved method should be used) to determine alachlor, atrazine and simizine simazine, if lower detection limits are required.

9 EPA Method 524.3, Version 1.0. “Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry,” June 2009. EPA 815–B–09–009. http://epa.gov/safewater/methods/analyticalmethods_ogwdw.html. Standard Methods for the Examination of Water and Wastewater, 18th edition (1992), 19th edition (1995), 20th edition (1998), 21st edition (2005), 22nd edition (2012). Available from American Public Health Association, 800 I Street, NW., Washington, DC, 20001-3710.

10.Standard Methods online are available at http://www.standardmethods.org. The year in which each method was approved by the Standard Methods Committee is designated by the last two digits in the method number. The methods listed are the only online versions that may be used.

SECTION 32.

NR 809.203 (4) (intro) is amended to read:

NR 809.203 (4) Sample collection. Samples shall be collected using containers and preservatives, and meeting the holding times specified in Table D. When an approved method that is not included in Table D is used to analyze samples, samples shall be collected using containers and preservatives, and meeting the holding times specified in the approved method. In all cases, samples should be analyzed as soon after collection as possible.

SECTION 33.

NR 809.203 (4) Table D is repealed and recreated to read:

Table D

Sample Preservation, Holding Times, and Sampling Containers for Organic Parameters

Method

Preservative2

Sample Holding Time

Extract Holding Time and Storage Conditions

Suggested Sample Size

Type of Container

502.22

Sodium Thiosulfate or Ascorbic Acid , 4ºC, HCl pH<2

14 days

40 – 120 mL

Glass with PTFE1 Lined Septum

504.1

Sodium Thiosulfate
Cool, 4ºC

14 days

4ºC, 24 hours

40 mL

Glass with PTFE1 Lined Septum

505

Sodium Thiosulfate
Cool, 4ºC

14 days
(7 days for Heptachlor)

4ºC, 24 hours

40 mL

Glass with PTFE1 Lined Septum

506

Sodium Thiosulfate
Cool, 4ºC, Dark

14 days

4ºC, Dark
14 days

1 L

Amber Glass with PTFE1 Lined Septum

507

Sodium Thiosulfate
Cool, 4ºC, Dark

14 days (See method for exceptions.)

4ºC, Dark
14 days

I L

Amber Glass with PTFE1 Lined Cap

508

Sodium Thiosulfate
Cool, 4ºC, Dark

7 days (See method for exceptions.)

4ºC, Dark
14 days

I L

Glass with PTFE1 Lined Cap

508A

Cool 4ºC

14 days

30 days

I L

Amber Glass with PTFE1 Lined Cap

508.1

Sodium Sulfite HCl pH<2
Cool, 4ºC

14 days (See method for exceptions.)

30 days

I L

Glass with PTFE Lined Cap

515.1

Sodium Thiosulfate
Cool, 4ºC, Dark

14 days

4ºC, Dark
28 days

I L

Amber Glass with PTFE1 Lined Cap

515.2

Sodium Thiosulfate or Sodium Sulfite
HCl pH<2
Cool, 4ºC, Dark

14 Days

≤4ºC, Dark
14 Days

I L

Amber Glass with PTFE1 Lined Cap

515.3

Sodium Thiosulfate
Cool, 4ºC, Dark

14 days

≤4ºC, Dark
14 Days

50 mL

Amber Glass with PTFE1 Lined Cap

515.4

Sodium Sulfite, Dark, Cool ≤10ºC for First 48 hrs, ≤6ºC thereafter

14 days

≤0ºC
21 days

40 mL

Amber Glass with PTFE1 Lined Cap

524.22

Ascorbic Acid or Sodium Thiosulfate
HCl pH<2, Cool 4ºC

14 days

40 – 120 mL

Glass with PTFE1 Lined Septum

524.32

Maleic and Ascorbic Acids pH<2, ≤10ºC for first 48 hrs., ≤6 thereafter
If only analyzing TTHM: Sodium Thiosulfate pH<2, ≤10ºC for first 48 hrs., ≤6 thereafter

14 days

40 – 120 mL

Amber Glass with PTFE1 Lined Septum

525.2

Sodium Sulfite, Dark, Cool, 4ºC, HCl pH<2

14 days (See method for exceptions)

≤4ºC
30 days

1 L

Amber Glass with PTFE1 Lined Cap

531.1, 6610

Sodium Thiosulfate, Monochloroacetic Acid pH<3, Cool, 4ºC

Cool 4ºC from collection until storage at laboratory;

<-10ºC at the laboratory;

28 days

60 mL

Glass with PTFE1 Lined Septum

531.2

Sodium Thiosulfate, Potassium Dihydrogen Citrate Buffer pH<4, Dark

≤10ºC for first 48 hrs., ≤6ºC thereafter

28 days

40 mL

Glass with PTFE1 Lined Septum

547

Sodium Thiosulfate
Cool, 4ºC

14 days; 18 mos. Frozen

60 mL

Glass with PTFE1 Lined Septum

548.1

Sodium Thiosulfate; HCl pH 1.5 -2 if High Biological Activity;
Cool, 4ºC, Dark

7 days

≤4ºC
14 days

≥ 250 mL

Amber Glass with PTFE1 Lined Septum

549.2

Sodium Thiosulfate; H2SO4 pH<2, if Biologically Active;
Cool 4ºC, Dark

7 days

21 days

≥ 250 mL

High Density Amber Plastic or Silanized Amber Glass

550

Sodium Thiosulfate

Cool 4ºC, HCl pH<2

7 days

4ºC, Dark

30 days

1 L

Amber Glass with PTFE1 Lined Septum

550.1

Sodium Thiosulfate

Cool 4ºC, HCl pH<2

7 days

4ºC, Dark

40 days

1 L

Amber Glass with PTFE1 Lined Septum

551.1

Sodium Sulfite. Ammonium Chloride, pH 4.5-5.0 with Phosphate Buffer

Cool, 4ºC

14 days

<-10ºC

≥ 40 mL

Glass with PTFE1 Lined Septum

552.1

Ammonium Chloride

Cool, 4ºC, Dark

28 days

≤4ºC, Dark

48 hrs.

250 mL

Amber Glass with PTFE1 Lined Cap

552.2

Ammonium Chloride
Cool, 4ºC, Dark

14 days

≤4ºC, Dark,

7 days
≤-10ºC, 14 days

50 mL

Amber Glass with PTFE1 Lined Cap

555

Sodium Sulfite

HCl pH ≤2

Dark, Cool, 4ºC

14 days

≥ 100 mL

Glass wit PTFE1 Lined Cap

1613

Sodium Thiosulfate

Cool 0 - 4ºC, Dark

1 year

40 days recommended

1 L

Amber Glass with PTFE1 Lined Cap

1 Polytetrafluoroethylene. Teflon is a brand name of a PTFE product.2 Chlorinated samples need to be dechlorinated at the time of collection. Samplers should follow the dechlorinating procedures contained in the approved methods.

SECTION 34.

NR 809.205 (2) (a) is amended to read: