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Home My WebLink AboutPretreatment Letter_20191004ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Ms. Sarah Laughlin Technical Services Specialist City of Asheboro PO Box 1106 Asheboro, NC 27204 Dear Ms. Laughlin, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdgq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/acereditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. • To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit htlps://deq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the fixture. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tin_yurl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(&ncdenr.goy). Sincerely, Linda Culpepper, Director Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. PEGAN Secretary LINDA CULPEPPER Director Mr. Brian Blanton Pretreatment Coordinator Brunswick County PO Box 249 Bolivia, NC 28422 Dear Mr. Blanton, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeg.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 r+oAnacnao�vu a� /� 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. • Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tinyLirl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(a)ncdenr.goy). Sincerely, inda Culpepper, Director fa( Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Mr. Robert Moore Asst. Director of Public Works Town of Burgaw 109 N Walker Street Burgaw, NC 28425 Dear Mr. Moore, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeg.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. �� North Carolina Department of Environmental Quality I Division of Water Resources E512 North Salisbury Street 1 1617 Mail Service Center 1 Raleigh, North Carolina 27699-1617 nign,_„yq�,yuw, "^ °^ ^^^AeAWO�1 � 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deg.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tin)Lurl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname a,ncdenr.gov). Sincerely, eDivision inda Culpepper, Director of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretory LINDA CULPEPPER Director Mr. Donald Smith Wastewater Collections Program Manager Town of Cary PO Box 8005 Cary, NC 27512 Dear Mr. Smith, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdgq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PEAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 noarrr r.�aoiara �" 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit htips://www.denix.osd.mil/edqw/accreditation/acereditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tinygrl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(i0cderin goy). Sincerely, Linda Culpepper, Director Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Mr. Robert Patterson, Jr. Water Resources Director City of Burlington PO Box 1358 Burlington, NC 27216 Dear Mr. Patterson, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes.. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. naan+ DEQ ,,, _ North Carolina Department of Environmental Quality I Division of Water Resources G�f/}� 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 f 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/acereditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". • Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. • To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. ® All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tinyurl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email ( firstname.lastname(&,ncdenr. goy). Sincerely, Linda Culpepper, Director �of Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Mr. Michael Christopher Medlin Director of Public Works & Utilities City of Clinton PO Box 199 Clinton, NC 28328 Dear Mr. Medlin, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (ht-tps://deq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. D_E Q�� North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 NgHrr1 C;q_rgl.rtJn Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. • To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. • To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https:Hdeq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. • All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tinygrl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(a� ncdenr. goy). Sincerely, Linda Culpepper, Director C " r Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Ms. Stephanie Brixey Deputy Director of E&ES/ POTW Director Durham County 5926 NC Hwy 55 E Durham, NC 27713 Dear Ms. Brixey, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https://deq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/ 1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 NOFMICnaaxo TM� /� 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". • Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at bqp://tinyurl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(&ncdenr. gov). Sincerely, Linda Culpepper, Director f Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director NORTH CAROLINA Environmental Quality April 30, 2019 Mr. Timothy Davis Environmental System Protection Supervisor Fayetteville Public Works Commission P.O. Box 1089 Fayetteville, NC 28302 Dear Mr. Davis, Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-Dace/ 1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 +� /'� 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laborator legs. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tinyurl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(&ncdenr.gov). Sincerely, Linda Culpepper, Director A Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Mr. Frank Skee Pretreatment Coordinator City of Greensboro PO Box 3136 Greensboro, NC 27402 Dear Mr. Frank Skee, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeg.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. North Carolina Department of Environmental Quality I Division of Water Resources _ 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edaw/accreditation/acereditedlabsiand search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. • Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https:Hdeq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laborator ly istings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at htip://tiMrl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(a)ncdenr. gov). Sincerely, e Culpepper, Director ion of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Ms. Vicky Payseur Pretreatment Coordinator Harnett County P. O. Box 1119 Lillington, NC 27546 Dear Ms. Payseur, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https://deq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/ 1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. D Q �� North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 NORTH CAROL «� /�� 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit htips://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deq.nc.Pov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laborato ,-listing_s. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a.total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tinyurl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(&ncdenr. gov). Sincerely, Linda Culpepper, Director Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Ms. Amy Varinoski Compliance Manager City of Mebane 106 E. Washington St. Mebane, NC 27302 Dear Ms. Varinoski, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. D E Q North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 name cnAouw+ �" 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. • To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edgw/acereditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. • To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. • All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tinygrl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname@ncdenr. goy). Sin erel , inda Culpepper, Director Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. PEGAN Secretary LINDA CULPEPPER Director Ms. Trudy McVicker Operations Manager City of Raeford 315 N. Main Street Raeford, NC 28376 Dear Ms. McVicker, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (htips:Hdeq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/l -4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617 �� /� 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tinyurl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(a)ncdenr. ov). Sincerely, r� inda Culpepper, Director .Y� Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Mr. Grant Cheek Commissioner Town of Ramseur PO Box 545 Ramseur, NC 27316 Dear Mr. Cheek, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeq_nc Gov/about/divisions/water-resources/water- resources-data/water-sciences-home-pa1;e/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. D E Qi� North Carolina Department of Environmental Quality I Division of Water Resources 4�4512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 N(7Ri11 (;nfiOUNn �� u.oc' xo(m.nw a+n1 � 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https:Hdeq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tiMrl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-70773627 or via email (firstname.lastname(a)ncdenr goy) . Sincerely, Culpepper, Director Jrf eDivision of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Mr. Gary Michael Glass ORC City of Randleman 3475 Applewood Road Randleman, NC 27317 Dear Mr. Glass, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. row �-2 E Q �� North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 Drq��U.,"M.f awm0wom Qft 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https:Hdeq.ne.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tinygrl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(a)ncdenr. goy). Sin rely, Linda Culpepper, Director �1 Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS 7 ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Ms. Sarah Jordan Pretreatment Coordinator City of Sanford PO Box 3729 Sanford, NC 27331 Dear Ms. Jordan, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (htttps:Hdeg.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 r�oan�cnaourvn 919,707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deg.nc.jzov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laborato . -lugs. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tin)Lurl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(a)ncdenr.gov). Sincerely, /Linda Culpepper, Director 41( Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Mr. Chris McCorquodale Wastewater Superintendent Town of Siler City PO Box 769 Siler City, NC 27344 Dear Mr. McCorquodale, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeg.ne.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. North Carolina Department of Environmental Quality I Division of Water Resources D � EQ 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 Ncx�:F�r;AA(71Ntn ^a+1�� 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edgw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https:Hdeq.ne.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laborato . -lr� istings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tiu)Lurl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(&ncdenr.goy). Sincerely; 0� Linda Culpepper, Director ' Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. PEGAN Secretary LINDA CULPEPPER Director Ms. Beth Eckert Environmental Management Director Cape Fear Public Utility 235 Government Center Dr. Wilmington, NC 28403 Dear Ms. Eckert, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https://deq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. North Carolina Department of Environmental Quality I Division of Water Resources ` 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 r�orxn+cnaoie+A 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deg.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laborato -listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tinyurl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(gncdenr. goy). Sincerely, Linda Culpepper, Director 0 DDivision of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Ms. Amanda Davis Executive Assistant Columbus County WWTP 612 North Madison Street Whiteville, NC 28472 Dear Ms. Davis, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. DE Q North Carolina Department of Environmental Quality I Division of Water Resources _ 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/acereditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deg.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure'to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at htip://tiMrl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(a)ncdenr.gov). Sincerely, 0-11 L' da Culpepper, Director er Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director NORTH CAROLINA Environmental Quality April 30, 2019 Ms. Debra Batten Laboratory Manager/Pretreatment Coordinator Town of Holly Springs P.O. Box 8 Holly Springs, NC 27540 Dear Ms. Batten, Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratoryanimals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. D_E Q;� North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edgw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laborator-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tinyurl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(&ncdenr.gov). Sincerely, Linda Culpepper, Director Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Mr. Carl Wheeler Pretreatment Coordinator Town of Rose Hill Post Office Box 8 Rose Hill, NC 28458 Dear Mr. Wheeler, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:HdN.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. D_EQNorth Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 rman,cnaot.wA 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https:Hdeq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laborator ly istings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tig)Lurl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(&ncdenr.goy). Sincerely, Linda Culpepper, Director Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Mr. Ralph Potter Pretreatment Coordinator City of Reidsville 230 West Morehead Street Reidsville, NC 27320 Dear Mr. Potter, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/ 1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. 0-41 D North Carolina Department of Environmental Quality Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 EQ N(:f11i1 !1�1(X.INA � ^-1 � 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tigyiirl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(a)ncdenr.goy). Sincerely ko Linda Culpepper, Director Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Ms. Shelby Smith Pretreatment Coordinator City of Graham PO Box 357 Graham, NC 27253 Dear Ms. Smith, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-page/l -4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. D_ EQNorth Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 NORil1 CAROI.INn "^�^^�1� 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https:Hdeq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tiMrl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(abncdenr. goy). Sincerely,. Linda Culpepper, Director Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS i ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Mr. Tyrone Battle Industrial Waste Control Administrator City of Durham 101 City Hall Plaza Durham, NC 27701 Dear Mr. Battle, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeq.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home-paste/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. 100, D North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 EQ Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/accreditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deq.ne.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tinygrl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(d)ncdenr.goy). Sincerely, Linda Culpepper, Director Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Ms. Carrie Hyler Pretreatment Supervisor City of High Point PO Box 230 High Point, NC 27261 Dear Ms. Hyler, NORTH CAROLINA Environmental Quality April 30, 2019 Several emerging compounds have been found in North Carolina waters, specifically, 1,4-dioxane and a group of chemicals known as perfluoroalkyl and polyfluoroalkyl substances (PFAS, also referred to as PFCs). Data reviewed as part of the UCMR (Unregulated Contaminant Monitoring Rule) has indicated elevated concentrations for these compounds in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of these compounds in the Cape Fear River Basin (https:Hdeg.nc.gov/about/divisions/water-resources/water- resources-data/water-sciences-home page/1-4-dioxane). Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 ug/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 ug/L in water supplies and 80 ug/L in all other waterbodies (15A NCAC 02B .0208). PFAS compounds are most often associated with nonstick coatings, plating operations, firefighting foams, and stain- and water-resistant treatments for clothing, furniture and carpeting. PFAS has been found to have adverse effects in laboratory animals and humans when ingested. To provide Americans with a margin of protection from a lifetime of exposure to PFAS from drinking water, EPA has established the health advisory levels of 70 ng/L individually and combined for two of the most common PFAS compounds: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonate). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, POTWs with approved Pretreatment Programs are hereby required to perform investigative monitoring at the treatment plant influent for 1,4-dioxane and total PFAS monthly for three consecutive months starting in July 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143-215.66. 'D� �� North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 nonn�cnaounn " \ / 919.707.9000 Samples collected should be representative of the typical wastewater flow to your facility. Sufficiently sensitive test methods shall be used. • To locate a lab capable of performing the PFAS analysis, please visit https://www.denix.osd.mil/edqw/accreditation/acereditedlabs/and search by method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version". ■ Grab samples are required to avoid cross -contamination and ensure consistency. ■ Please refer to Attachment B for the analyte list. Each facility shall provide results for as many of the PFAS compounds as possible, specifically including PFOA and PFOS. • To locate a lab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deq.nc.gov/about/divisions/water-resources/water-resources-data/water-sciences- home-paize/laboratory-certification-branch/certified-laborato -lry isting_s. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. • All sample results shall be submitted to PERCS by October 31, 2019 and shall be sent to the following email address (please include the lab sheets with the test results): Pretreatment.Results@ncdenr.gov. Please include your NPDES permit number in your subject heading. Attachment A outlines recommended actions on how to assess potential sources, monitor, and work with your industries to reduce potential sources of these compounds. You are not required to implement these actions until you have received notification from the Division to do so. However, if your influent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, contact your DWR Pretreatment Program coordinator to discuss your facility's allowable discharge concentration. If your influent levels exceed your facility's allowable discharge concentration, you should take proactive steps to begin reducing or eliminating 1,4-dioxane discharges to your facility. The PFAS drinking water health advisory of 70 ng/L is the target concentration for the sum of sample results for PFOA and PFOS. Therefore, actions to reduce these compounds will be required for facilities with influent levels greater than a total PFAS value of 70 ng/L if there are water supply intakes downstream of your facility's discharge. Again, you are not required to implement actions in Attachment A until you have received notification from the Division to do so. Please be aware that criteria are being developed for PFAS compounds and are likely to be lower than the current drinking water advisory level. Results for PFAS that do not currently require action may trigger reduction activities in the future. More Information DWR will be holding a technical informational session on May 21, 2019 from 10 am to 3 pm at the Herbert C. Young Community Center, 101 Wilkinson Ave., Cary, NC. At this time registration for this workshop is limited to approved Pretreatment Program POTW staff due to space limitations. Please register at http://tiMrl.com/NCECTIS. The Department looks forward to working closely with you on this important public health issue. Data from the UCMR and other sources will continue to be evaluated to determine next steps to reduce the discharge of 1,4-dioxane and PFAS throughout the State. Please contact the appropriate PERCS staff member if you have any questions or concerns: Deborah Gore 919-707-3624, Monti Hassan 919-707-3626 or Vivien Zhong 919-707-3627 or via email (firstname.lastname(a�ncdenr.gov). Sincerely, Linda Culpepper, Director �p( Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS