2016 LIST OF THREATENED OR IMPAIRED WATERS THAT REQUIRE A TMDL November 30, 2017 (i.e., Category 5 Impairments - this represtents the Section 303(d) List) Page 1 of 91 (Excluding Fish/Shellfish Consumption Advisories due to Mercury - see Note 3) R-WD-17-09, App 1 Notes: 1. See the Consolidated Assessment and Listing Methodology (CALM) for definitions and details regarding how this list was developed. 2. This list is sorted by Waterbody Type and then Assessment Unit ID. 3. By this note, all marine surface waters in New Hampshire are also included on this list due to statewide fish/shellfish consumption advisories issued because of mercury levels in fish/shellfish tissue. To keep the size of this list manageable, mercury impairment for fish/shellfish consumption are not shown below. 4. TMDL stands for Total Maximum Daily Load study. TMDL schedules are subject to change as funding and resources become available. 5. Waters presented on this list may also be threatened or impaired by other pollutants or nonpollutants that do not require a TMDL. Assessment Water Primary Water Size Use Impairment DES TMDL Source Unit ID Name Town Size Unit Desc Name Category Threatened Priority Name NHEST600030406-01 Salmon Falls River Dover 0.282 Sq. miles Aquatic Life Chlorophyll-a 5-P N Low Source Unknown Dissolved oxygen saturation 5-P N Low Source Unknown Nitrogen (Total) 5-M N Low Source Unknown Oxygen, Dissolved 5-P N Low Source Unknown pH 5-M N Low Source Unknown Fish Consumption Polychlorinated biphenyls 5-M N Low Source Unknown Primary Contact Chlorophyll-a 5-M N Low Source Unknown Recreation Nitrogen (Total) 5-P N Low Source Unknown Shellfishing Dioxin (including 2,3,7,8-TCDD) 5-M N Low Source Unknown Polychlorinated biphenyls 5-M N Low Source Unknown NHEST600030608-01 Cocheco River Dover 0.277 Sq. miles Aquatic Life 2-Methylnaphthalene 5-P N Low Source Unknown Acenaphthene 5-P N Low Source Unknown Acenaphthylene 5-P N Low Source Unknown Anthracene 5-P N Low Source Unknown Benzo(a)pyrene (PAHs) 5-P N Low Source Unknown Benzo[a]anthracene 5-P N Low Source Unknown Benzo[g,h,i]perylene 5-P N Low Source Unknown Biphenyl 5-P N Low Source Unknown Chlorophyll-a 5-P N Low Source Unknown Chrysene (C1-C4) 5-P N Low Source Unknown DDD 5-P N Low Source Unknown DDE 5-P N Low Source Unknown DDT 5-P N Low Source Unknown Dibenz[a,h]anthracene 5-P N Low Source Unknown Dieldrin 5-P N Low Source Unknown Fluoranthene 5-P N Low Source Unknown Fluorene 5-P N Low Source Unknown Indeno[1,2,3-cd]pyrene 5-P N Low Source Unknown Naphthalene 5-P N Low Source Unknown Nitrogen (Total) 5-M N Low OXYGEN, DISSOLVED 5-P N Low Source Unknown Phenanthrene 5-P N Low Source Unknown Pyrene 5-P N Low Source Unknown Fish Consumption Polychlorinated biphenyls 5-M N Low Source Unknown 2016 LIST OF THREATENED OR IMPAIRED WATERS THAT REQUIRE A TMDL November 30, 2017 (i.e., Category 5 Impairments - this represtents the Section 303(d) List) Page 2 of 91 (Excluding Fish/Shellfish Consumption Advisories due to Mercury - see Note 3) R-WD-17-09, App 1 Notes: 1. See the Consolidated Assessment and Listing Methodology (CALM) for definitions and details regarding how this list was developed. 2. This list is sorted by Waterbody Type and then Assessment Unit ID. 3. By this note, all marine surface waters in New Hampshire are also included on this list due to statewide fish/shellfish consumption advisories issued because of mercury levels in fish/shellfish tissue. To keep the size of this list manageable, mercury impairment for fish/shellfish consumption are not shown below. 4. TMDL stands for Total Maximum Daily Load study. TMDL schedules are subject to change as funding and resources become available. 5. Waters presented on this list may also be threatened or impaired by other pollutants or nonpollutants that do not require a TMDL. Assessment Water Primary Water Size Use Impairment DES TMDL Source Unit ID Name Town Size Unit Desc Name Category Threatened Priority Name NHEST600030608-01 Cocheco River Dover 0.277 Sq. miles Primary Contact Chlorophyll-a 5-P N Low Source Unknown Recreation Nitrogen (Total) 5-P N Low Source Unknown Shellfishing Dioxin (including 2,3,7,8-TCDD) 5-M N Low Source Unknown Polychlorinated biphenyls 5-M N Low Source Unknown NHEST600030709-01-01 Lamprey River North Newmarket 0.033 Sq. miles Aquatic Life 2-Methylnaphthalene 5-P N Low Petroleum/natural Gas Activities Source Unknown Acenaphthene 5-M N Low Source Unknown Acenaphthylene 5-M N Low Source Unknown Aluminum 5-M N Low Source Unknown Anthracene 5-M N Low Petroleum/natural Gas Activities Source Unknown Arsenic 5-M N Low Source Unknown Benzo(a)pyrene (PAHs) 5-M N Low Petroleum/natural Gas Activities Source Unknown Benzo[a]anthracene 5-M N Low Petroleum/natural Gas Activities Source Unknown Cadmium 5-M N Low Source Unknown Chlorophyll-a 5-M N Low Source Unknown Chrysene (C1-C4) 5-M N Low Petroleum/natural Gas Activities Source Unknown Copper 5-M N Low Source Unknown DDD 5-P N Low Source Unknown DDE 5-P N Low Source Unknown DDT 5-P N Low Source Unknown Dibenz[a,h]anthracene 5-M N Low Petroleum/natural Gas Activities Source Unknown Dissolved oxygen saturation 5-P N Low Source Unknown Fluoranthene 5-M N Low Petroleum/natural Gas Activities Source Unknown Fluorene 5-M N Low Petroleum/natural Gas Activities Source Unknown Lead 5-M N Low Source Unknown Mercury 5-M N Low Source Unknown Naphthalene 5-P N Low Petroleum/natural Gas Activities Source Unknown 2016 LIST OF THREATENED OR IMPAIRED WATERS THAT REQUIRE A TMDL November 30, 2017 (i.e., Category 5 Impairments - this represtents the Section 303(d) List) Page 3 of 91 (Excluding Fish/Shellfish Consumption Advisories due to Mercury - see Note 3) R-WD-17-09, App 1 Notes: 1. See the Consolidated Assessment and Listing Methodology (CALM) for definitions and details regarding how this list was developed. 2. This list is sorted by Waterbody Type and then Assessment Unit ID. 3. By this note, all marine surface waters in New Hampshire are also included on this list due to statewide fish/shellfish consumption advisories issued because of mercury levels in fish/shellfish tissue. To keep the size of this list manageable, mercury impairment for fish/shellfish consumption are not shown below. 4. TMDL stands for Total Maximum Daily Load study. TMDL schedules are subject to change as funding and resources become available. 5. Waters presented on this list may also be threatened or impaired by other pollutants or nonpollutants that do not require a TMDL. Assessment Water Primary Water Size Use Impairment DES TMDL Source Unit ID Name Town Size Unit Desc Name Category Threatened Priority Name NHEST600030709-01-01 Lamprey River North Newmarket 0.033 Sq. miles Aquatic Life Nickel 5-M N Low Source Unknown Nitrogen (Total) 5-M N Low Source Unknown Oxygen, Dissolved 5-P N Low Source Unknown Phenanthrene 5-M N Low Source Unknown Pyrene 5-M N Low Petroleum/natural Gas Activities Source Unknown pH 5-M N Low Source Unknown trans-Nonachlor 5-M N Low Source Unknown Fish Consumption Polychlorinated biphenyls 5-M N Low Source Unknown Primary Contact Chlorophyll-a 5-M N Low Source Unknown Recreation Nitrogen (Total) 5-P N Low Source Unknown Shellfishing Dioxin (including 2,3,7,8-TCDD) 5-M N Low Source Unknown Polychlorinated biphenyls 5-M N Low Source Unknown NHEST600030709-01-02 Lamprey River South Newmarket 0.137 Sq. miles Aquatic Life Chlorophyll-a 5-M N Low Source Unknown Estuarine Bioassessments 5-P N Low Source Unknown Light Attenuation Coefficient 5-P N Low Source Unknown Nitrogen (Total) 5-M N Low Source Unknown Fish Consumption Polychlorinated biphenyls 5-M N Low Source Unknown Primary Contact Chlorophyll-a 5-M N Low Source Unknown Recreation Nitrogen (Total) 5-P N Low Source Unknown Shellfishing Dioxin (including 2,3,7,8-TCDD) 5-M N Low Source Unknown Polychlorinated biphenyls 5-M N Low Source Unknown NHEST600030806-01-01 Squamscott River South Stratham 0.274 Sq. miles Aquatic Life Acenaphthene 5-M N Low Source Unknown Acenaphthylene 5-M N Low Source Unknown Aluminum 5-M N Low Source Unknown Anthracene 5-M N Low Source Unknown Arsenic 5-M N Low Source Unknown Benzo(a)pyrene (PAHs) 5-M N Low Source Unknown Benzo[a]anthracene 5-M N Low Source Unknown Cadmium 5-M N Low Source Unknown Chlorophyll-a 5-P N Low Source Unknown Chrysene (C1-C4) 5-M N Low Source Unknown Copper 5-M N Low Source Unknown Dibenz[a,h]anthracene 5-M N Low Source Unknown 2016 LIST OF THREATENED OR IMPAIRED WATERS THAT REQUIRE A TMDL November 30, 2017 (i.e., Category 5 Impairments - this represtents the Section 303(d) List) Page 4 of 91 (Excluding Fish/Shellfish Consumption Advisories due to Mercury - see Note 3) R-WD-17-09, App 1 Notes: 1. See the Consolidated Assessment and Listing Methodology (CALM) for definitions and details regarding how this list was developed. 2. This list is sorted by Waterbody Type and then Assessment Unit ID. 3. By this note, all marine surface waters in New Hampshire are also included on this list due to statewide fish/shellfish consumption advisories issued because of mercury levels in fish/shellfish tissue.