Checklists
This section contains copies of the parameter/method/technology checklists used by NC WW/GW Laboratory Certification auditors during the on-site inspections of laboratories. They include comments, technical tips and the applicable literature references.
| General Checklist Title | Revision Date | Document Links |
|---|---|---|
| Inspection Entrance Interview Checklist | 08/28/2008 | |
| Sample Receipt Checklist | 06/19/2015 | |
| Quality Assurance Systems Checklist | 05/19/2011 | |
| Exit Interview Summary Checklist | 12/30/2009 | |
| Field Laboratory Entrance Walkthrough | 7/2023 |
| Non-Metal Inorganic Checklist Title |
Technology | Method | Revision Date |
Document Links |
|---|---|---|---|---|
| pH | Electrometric | SM 4500 H+ B - 2011 | 4/2021 | |
| Conductivity | Wheatstone Bridge | SM 2510 B - 2011 | 1/2022 | |
| Total Residual Chlorine | Colorimetric, DPD | SM 4500 Cl G - 2011 | 2/2022 | |
| Settleable Residue | Volumetric | SM 2540 F - 2015 | 8/2023 | |
| Salinity | Conductivity | SM 2520 B - 2011 | 3/2022 | |
| Temperature | Thermometric | SM 2550 B - 2010 | 3/2022 | |
| Dissolved Oxygen | Membrane Electrode | SM 4500 O G-2016, ASTM D888-12 (B) | 1/2023 | |
| Dissolved Oxygen | Optical/Luminescent |
SM 4500 O H-2016, Hach 10360 Rev. 1.2, 10/2011, ASTM D888-12 (C), In Situ 1002-8-2009 |
1/2023 | |
| Total Organic Carbon | Persulfate-UV or Heated Persulfate | SM 5310 C - 2014 | 5/2023 | |
| Total Organic Carbon | High-Temperature Combustion | SM 5310 B - 2014 | 9/2023 | |
| BOD and CBOD (5-day) | DO Depletion and LDO | SM 5210 B - 2016 | 8/2023 | |
| Ammonia Nitrogen | ISE | SM 4500 NH3 D-2011 | 1/2020 | |
| Ammonia Nitrogen | Spectrophotometric | EPA Method 350.1, Rev. 2.0, 1993 (Hach Method 10205 TNT) | 3/2021 | |
| Ammonia Nitrogen | Automatic phenate | EPA Method 350.1, Rev. 2.0, 1993 | 4/2023 | |
| Ammonia Nitrogen | Titration | SM 4500 NH3 C-2011 | 11/16/2022 | |
| Suspended Residue | Gravimetric | SM 2540 D - 2015 | 7/2023 | |
| Dissolved Residue | Gravimetric | SM 2540 C - 2015 | 8/2021 | |
| Total Residue | Gravimetric | SM 2540 B - 2015 | 8/2021 | |
| Ignitability of Solids | Closed-Cup Tester | SW-846 1030 | 1/2020 | |
| Paint Filter Liquid | Gravimetric | SW-846 9095B | 6/2016 | |
| Nitrite Nitrogen | Colorimetric | SM 4500-NO2 B-2011 | 1/2020 | |
| Nitrite Nitrogen |
Automated - Cadmium Reduction Bypassed |
EPA 353.2, Rev. 2, 1993 | 2/2022 | |
| Turbidity | Nephelometric | SM 2130 B-2011 | 1/2020 | |
| Oil & Grease | Gravimetric, HEM | EPA 1664 Rev.B | 7/2023 | |
| Total Phosphorus | Ascorbic Acid, Automated | EPA 365.1, Rev. 2.0, 1993 | 1/2020 | |
| COD | Colorimetric | SM 5220 D-2011 | 1/2020 | |
| COD | Colorimetric | Hach 8000, Rev. 1979 (method here) | 3/27/23 | |
| Alkalinity | Titration | SM 2320 B-2011 | 1/2020 | |
| Anions | Ion Chromatography | EPA 300.0, Rev. 2.1, 1993 | 1/2020 | |
| Anions | Ion Chromatography | SW846 9056A | 5/2023 | |
| Color (PC) | Visual Comparison | SM 2120 B-2011 | 2/2021 | |
| Nitrogen, Total Kjeldahl | Digestion with Spectrophotometric | Hach 10242 Rev 1.1 | 2/2021 | |
| Nitrogen, Total Kjeldahl |
Block Digestion and Semi-Automated Colorimetry |
EPA 351.2, Rev. 2.0, 1993 | 2/2022 | |
| Nitrogen, Total Kjeldahl | Macro Digestion and Titration | SM 4500 Norg B (NH3 C)-2011 | 11/16/2022 | |
| Cyanide, Total | Manual Spectrophotometric | SM 4500 CN- E-2016 | 8/2021 | |
| Nitrate + Nitrite | Cadmium Reduction, Manual | SM 4500 NO3- E-2016 | 1/2022 | |
| Nitrate + Nitrite | Cadmium Reduction, Automated | SM 4500 NO3- F-2016 | 1/2022 | |
| Nitrate + Nitrite | Cadmium Reduction, Automated | EPA 353.2, Rev. 2.0, 1993 | 11/2022 | |
| Vector Attraction Reduction | Option 1: Reduction in Volatile Solids Content | 5/2022 | ||
| Vector Attraction Reduction | Option 5: Aerobic Processes at Greater Than 40C | 1/2022 | ||
| Vector Attraction Reduction | Option 6: Addition of Alkali | 6/2023 | ||
| Vector Attraction Reduction | Option 7: Moisture Reduction of Sewage Sludge Containing No Unstabilized Solids | 4/2023 | ||
| Vector Attraction Reduction | Option 8: Moisture Reduction of Sewage Sludge Containing Unstabilized Solids | 5/2023 |
| Bacteriological Checklist Title | Technology | Method | Revision Date |
Document Links |
|---|---|---|---|---|
| Thermotolerant (Fecal) Coliform | MPN | Colilert® 18 | 7/2023 | |
| Thermotolerant (Fecal) Coliform | Membrane Filter | SM 9222 D -2015 | 1/2023 | |
| Thermotolerant (Fecal) Coliform for Sludge (503) | MPN | SM 9221 E - 2014 | 9/2021 | |
| Total Coliform | Membrane Filter | SM 9222 B-2015 | 2/2023 | |
| Enterococci | MPN | Enterolert® IDEXX | 1/2020 | |
| E. Coli | MPN | Colilert® 18 | 3/2022 | |
| E. Coli | MPN | Colilert®(24) | 3/2022 |
| Metals Checklist Title | Technology | Method | Revision Date | Document Links |
|---|---|---|---|---|
| Mercury | CVAA | EPA 245.1, Rev. 3.0 (1994) | 01/2020 | |
| Mercury | CVAA | SW-846 7470A | 01/2020 | |
| Hexavalent Chromium | Colorimetric | SW-846 7196A | 01/2020 | |
| Hexavalent Chromium | Colorimetric | SW-846 7196A/3060A (Non-Aqueous) | 01/2020 | |
| Hexavalent Chromium | Colorimetric | SM 3500 Cr- B-2011 (Aqueous) | 10/20/2022 | |
| Metals | ICP-MS | EPA 200.8, Rev. 5.4 (1994) (Aqueous & Non-Aqueous) | 3/2022 | |
| Metals | ICP-AES | EPA 200.7, Rev. 4.4 (1994) (Aqueous & Non-Aqueous) | 3/2022 |
| Organics Checklist Title | Technology | Method | Revision Date | Document Links |
|---|---|---|---|---|
| Total Petroleum Hydrocarbons - GRO | GC | SW846- 8015C (Aqueous & Non-Aqueous) | 2/18/2021 | |
| Purgeable Organics | GC/MS | SW-846 8260D (Aqueous & Non-Aqueous) | 10/04/2022 |
Additional checklists will be added as they are reviewed and finalized.
If you see something that should be corrected or have any questions about the content of the site, contact the site administrator; or (919) 733- 3908 x259.
This page was last modified on 09/06/2023