{"query":{"parameter":"polychlorinated biphenyls","place":"US-MD","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-MD","US"],"parameter_keys":["cas:1336-36-3","name:pcbs - total","name:pcbs, total","name:polychlorinated biphenyls pcbs","name:polychlorinated biphenyls, pcbs","name:polychlorinated biphenyls, total","name:dioxins, furans and dioxin-like pcbs","cas:53469-21-9"],"names_matched":[["polychlorinated biphenyls","cas:1336-36-3"],["pcbs total polychlorinated biphenyls","name:pcbs - total"],["pcbs total polychlorinated biphenyls","name:pcbs, total"],["polychlorinated biphenyls pcbs","name:polychlorinated biphenyls pcbs"],["polychlorinated biphenyls pcbs","name:polychlorinated biphenyls, pcbs"],["polychlorinated biphenyls total","name:polychlorinated biphenyls, total"],["polychlorinated biphenyls total pcbs","name:polychlorinated biphenyls, total"],["dioxins furans and dioxin like pcbs","name:dioxins, furans and dioxin-like pcbs","pcbs"],["pcbs total","name:pcbs - total","pcbs"],["pcbs total","name:pcbs, total","pcbs"],["total pcbs","cas:53469-21-9","pcbs"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order","not_sent":{"rows":4,"names":["~Aroclor 1242"],"says":"4 rows share a parameter key with a longer name holding \"polychlorinated biphenyls\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"polychlorinated biphenyls\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":18,"offset":0,"returned":18,"next_offset":null,"rows":[{"id":"c4fac1e51556909b","parameter":"Polychlorinated Biphenyls PCBs","value":"0.014","value_num":0.014,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:polychlorinated biphenyls pcbs","place":["US-MD"],"conditions":["receiving_water is freshwater"],"cite":{"instrument":"us_md_wqs","title":"COMAR 26.08.02.03-2 — Numerical Criteria for Toxic Substances in Surface Waters (Maryland), Tables 1, 4, 5 and 6","issuer":"State of Maryland, Department of the Environment (MDE)","edition":"Code of Maryland Regulations as served by the Division of State Documents on 2026-10-09","source_url":"https://dsd.maryland.gov/regulations/Pages/26.08.02.03-2.aspx","source_sha256":"9924bc5fb2d109930b06f840cd56b722bdab36dfe897e28897e658512be1f9bd","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"COMAR 26.08.02.03-2 G, Table 6 (fresh water chronic)","page":null,"quote":"Polychlorinated Biphenyls PCBs 0.014 0.03 0.00064 a 0.00064 a 0.0005"}},{"id":"b7f07ae00f25638f","parameter":"Polychlorinated Biphenyls PCBs","value":"0.03","value_num":0.03,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:polychlorinated biphenyls pcbs","place":["US-MD"],"conditions":["receiving_water is marine","salt water (the table's Salt Water column)"],"cite":{"instrument":"us_md_wqs","title":"COMAR 26.08.02.03-2 — Numerical Criteria for Toxic Substances in Surface Waters (Maryland), Tables 1, 4, 5 and 6","issuer":"State of Maryland, Department of the Environment (MDE)","edition":"Code of Maryland Regulations as served by the Division of State Documents on 2026-10-09","source_url":"https://dsd.maryland.gov/regulations/Pages/26.08.02.03-2.aspx","source_sha256":"9924bc5fb2d109930b06f840cd56b722bdab36dfe897e28897e658512be1f9bd","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"COMAR 26.08.02.03-2 G, Table 6 (salt water chronic)","page":null,"quote":"Polychlorinated Biphenyls PCBs 0.014 0.03 0.00064 a 0.00064 a 0.0005"}},{"id":"22cf28b4c7d838cb","parameter":"Polychlorinated Biphenyls PCBs","value":"0.00064 a","value_num":0.00064,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:polychlorinated biphenyls pcbs","place":["US-MD"],"conditions":["human health for consumption of drinking water + organism (the table's column)"],"cite":{"instrument":"us_md_wqs","title":"COMAR 26.08.02.03-2 — Numerical Criteria for Toxic Substances in Surface Waters (Maryland), Tables 1, 4, 5 and 6","issuer":"State of Maryland, Department of the Environment (MDE)","edition":"Code of Maryland Regulations as served by the Division of State Documents on 2026-10-09","source_url":"https://dsd.maryland.gov/regulations/Pages/26.08.02.03-2.aspx","source_sha256":"9924bc5fb2d109930b06f840cd56b722bdab36dfe897e28897e658512be1f9bd","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"COMAR 26.08.02.03-2 G, Table 6 (human health, drinking water + organism)","page":null,"quote":"Polychlorinated Biphenyls PCBs 0.014 0.03 0.00064 a 0.00064 a 0.0005"}},{"id":"a07ae5f00f59f82d","parameter":"Polychlorinated Biphenyls PCBs","value":"0.00064 a","value_num":0.00064,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:polychlorinated biphenyls pcbs","place":["US-MD"],"conditions":["human health for consumption of organism only (the table's column)"],"cite":{"instrument":"us_md_wqs","title":"COMAR 26.08.02.03-2 — Numerical Criteria for Toxic Substances in Surface Waters (Maryland), Tables 1, 4, 5 and 6","issuer":"State of Maryland, Department of the Environment (MDE)","edition":"Code of Maryland Regulations as served by the Division of State Documents on 2026-10-09","source_url":"https://dsd.maryland.gov/regulations/Pages/26.08.02.03-2.aspx","source_sha256":"9924bc5fb2d109930b06f840cd56b722bdab36dfe897e28897e658512be1f9bd","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"COMAR 26.08.02.03-2 G, Table 6 (human health, organism only)","page":null,"quote":"Polychlorinated Biphenyls PCBs 0.014 0.03 0.00064 a 0.00064 a 0.0005"}},{"id":"c2fb258e04877378","parameter":"Polychlorinated Biphenyls PCBs","value":"0.0005","value_num":0.0005,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:polychlorinated biphenyls pcbs","place":["US-MD"],"conditions":["Public Water Supply designated waters only (the table's * note)"],"cite":{"instrument":"us_md_wqs","title":"COMAR 26.08.02.03-2 — Numerical Criteria for Toxic Substances in Surface Waters (Maryland), Tables 1, 4, 5 and 6","issuer":"State of Maryland, Department of the Environment (MDE)","edition":"Code of Maryland Regulations as served by the Division of State Documents on 2026-10-09","source_url":"https://dsd.maryland.gov/regulations/Pages/26.08.02.03-2.aspx","source_sha256":"9924bc5fb2d109930b06f840cd56b722bdab36dfe897e28897e658512be1f9bd","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"COMAR 26.08.02.03-2 G, Table 6 (drinking water MCL)","page":null,"quote":"Polychlorinated Biphenyls PCBs 0.014 0.03 0.00064 a 0.00064 a 0.0005"}},{"id":"c2414b35b4c492ff","parameter":"Total PCBs (sum of all PCB isomers, or all Aroclors)","value":"0.10","value_num":0.1,"unit":"mg/L","statistic":"composite","direction":"max","kind":"limit","medium":"product","level":"national","parameter_key":"cas:1336-36-3","place":["US"],"conditions":["(a) Table UTS identifies the hazardous constituents, along with the nonwastewater and wastewater treatment standard levels, that are used to regulate most prohibited hazardous wastes with numerical limits. For determining compliance with treatment standards for underlying hazardous constituents as defined in § 268.2(i), these treatment standards may not be exceeded. Compliance with these treatment standards is measured by an analysis of grab samples, unless otherwise noted in the following Table UTS.","8 This standard is temporarily deferred for soil exhibiting a hazardous characteristic due to D004-D011 only."],"cite":{"instrument":"us_40cfr268_48","title":"40 CFR 268.48 — Universal treatment standards: Table UTS, wastewater and nonwastewater treatment standards for the hazardous constituents of land-disposal-restricted wastes","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"eCFR, 40 CFR 268.48 as of 2026-10-13 (title 40 up to date as of that day; source note: 59 FR 48103, Sept. 19, 1994, as last amended at 76 FR 34156, June 13, 2011)","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-13/title-40.xml?part=268&section=268.48","source_sha256":"70b2e58a6b1e228e2c204acc69b69fab0d5a0347e35d569959073c3dc3ee4adb","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 268.48, Table UTS, Organic Constituents, wastewater standard","page":null,"quote":"Total PCBs (sum of all PCB isomers, or all Aroclors) 8 1336-36-3 0.10 10"}},{"id":"75360f78b031ceb3","parameter":"Total PCBs (sum of all PCB isomers, or all Aroclors)","value":"10","value_num":10,"unit":"mg/kg","statistic":"instant","direction":"max","kind":"limit","medium":"product","level":"national","parameter_key":"cas:1336-36-3","place":["US"],"conditions":["(a) Table UTS identifies the hazardous constituents, along with the nonwastewater and wastewater treatment standard levels, that are used to regulate most prohibited hazardous wastes with numerical limits. For determining compliance with treatment standards for underlying hazardous constituents as defined in § 268.2(i), these treatment standards may not be exceeded. Compliance with these treatment standards is measured by an analysis of grab samples, unless otherwise noted in the following Table UTS.","8 This standard is temporarily deferred for soil exhibiting a hazardous characteristic due to D004-D011 only."],"cite":{"instrument":"us_40cfr268_48","title":"40 CFR 268.48 — Universal treatment standards: Table UTS, wastewater and nonwastewater treatment standards for the hazardous constituents of land-disposal-restricted wastes","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"eCFR, 40 CFR 268.48 as of 2026-10-13 (title 40 up to date as of that day; source note: 59 FR 48103, Sept. 19, 1994, as last amended at 76 FR 34156, June 13, 2011)","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-13/title-40.xml?part=268&section=268.48","source_sha256":"70b2e58a6b1e228e2c204acc69b69fab0d5a0347e35d569959073c3dc3ee4adb","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 268.48, Table UTS, Organic Constituents, nonwastewater standard","page":null,"quote":"Total PCBs (sum of all PCB isomers, or all Aroclors) 8 1336-36-3 0.10 10"}},{"id":"91ae53526c691f10","parameter":"Polychlorinated biphenyls","value":"0.0005","value_num":0.0005,"unit":"mg/l","direction":"max","kind":"limit","medium":"drinking_water","level":"national","parameter_key":"cas:1336-36-3","place":["US"],"conditions":["40 CFR 141.2: Maximum contaminant level means the maximum permissible level of a contaminant in water which is delivered to any user of a public water system."],"cite":{"instrument":"us_npdwr","title":"40 CFR Part 141 — National Primary Drinking Water Regulations (eCFR, as of 2026-08-01)","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"eCFR as of 2026-08-01","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=141","source_sha256":"bd534eb2d8af38e141e1cd6236134a638298fbf14791b30279eeb47d815d7767","fetched_at":"2026-08-29","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"141.61","page":null,"quote":null,"column":"mcl"}},{"id":"ccee13a232f6f5ec","parameter":"Polychlorinated Biphenyls (PCBs)","value":"0.014","value_num":0.014,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:1336-36-3","place":["US"],"conditions":["EPA's recommendation under Clean Water Act § 304(a): 'State and Tribal governments may use these criteria or use them as guidance in developing their own' — it binds a water once the state adopts it for the water's designated use","receiving_water is freshwater","Freshwater CCC (chronic): criterion continuous concentration, chronic"],"cite":{"instrument":"us_nrwqc_aquatic","title":"EPA National Recommended Water Quality Criteria — Aquatic Life Criteria Table (freshwater and saltwater CMC/CCC)","issuer":"U.S. Environmental Protection Agency","edition":"EPA web table, last updated on June 9, 2026 (fetched 2026-10-09); each criterion carries its publication year","source_url":"https://www.epa.gov/wqc/national-recommended-water-quality-criteria-aquatic-life-criteria-table","source_sha256":"be6b429558db9852c3456eb22c17046aa1a3335ee89e702e8afb793f9b5b25ec","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"National Recommended Aquatic Life Criteria table","page":null,"quote":"Polychlorinated Biphenyls (PCBs) (P) — — 0.014 — 0.03 —"}},{"id":"0699c7f30f07336f","parameter":"Polychlorinated Biphenyls (PCBs)","value":"0.03","value_num":0.03,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:1336-36-3","place":["US"],"conditions":["EPA's recommendation under Clean Water Act § 304(a): 'State and Tribal governments may use these criteria or use them as guidance in developing their own' — it binds a water once the state adopts it for the water's designated use","receiving_water is marine","Saltwater CCC (chronic): criterion continuous concentration, chronic"],"cite":{"instrument":"us_nrwqc_aquatic","title":"EPA National Recommended Water Quality Criteria — Aquatic Life Criteria Table (freshwater and saltwater CMC/CCC)","issuer":"U.S. Environmental Protection Agency","edition":"EPA web table, last updated on June 9, 2026 (fetched 2026-10-09); each criterion carries its publication year","source_url":"https://www.epa.gov/wqc/national-recommended-water-quality-criteria-aquatic-life-criteria-table","source_sha256":"be6b429558db9852c3456eb22c17046aa1a3335ee89e702e8afb793f9b5b25ec","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"National Recommended Aquatic Life Criteria table","page":null,"quote":"Polychlorinated Biphenyls (PCBs) (P) — — 0.014 — 0.03 —"}},{"id":"79cf322c4743c9d0","parameter":"Polychlorinated Biphenyls (PCBs)","value":"0.000064","value_num":0.000064,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:1336-36-3","place":["US"],"conditions":["EPA's recommendation under Clean Water Act § 304(a): 'State and Tribal governments may use these criteria or use them as guidance in developing their own' — it binds a water once the state adopts it for the water's designated use","receiving_water is freshwater","consumption of water + organism: a water designated a drinking-water source and for fish and shellfish (a designated use the state assigns)"],"cite":{"instrument":"us_nrwqc_human_health","title":"EPA National Recommended Water Quality Criteria — Human Health Criteria Table (water + organism, organism only)","issuer":"U.S. Environmental Protection Agency","edition":"EPA web table (fetched 2026-10-09); each criterion carries its publication year","source_url":"https://www.epa.gov/wqc/national-recommended-water-quality-criteria-human-health-criteria-table","source_sha256":"a0229d5a613672b46a000c5b9925dd3a23c3e05914bb020b7f739c69cecbb5fe","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"National Recommended Water Quality Criteria — Human Health Criteria Table","page":null,"quote":"Polychlorinated Biphenyls (PCBs) (P) — 0.000064 0.000064 2002"}},{"id":"52c83c7aa1239823","parameter":"Polychlorinated Biphenyls (PCBs)","value":"0.000064","value_num":0.000064,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:1336-36-3","place":["US"],"conditions":["EPA's recommendation under Clean Water Act § 304(a): 'State and Tribal governments may use these criteria or use them as guidance in developing their own' — it binds a water once the state adopts it for the water's designated use","receiving_water is freshwater","consumption of organism only: a water designated for fish and shellfish taken from it, not a drinking-water source (fresh or salt)"],"cite":{"instrument":"us_nrwqc_human_health","title":"EPA National Recommended Water Quality Criteria — Human Health Criteria Table (water + organism, organism only)","issuer":"U.S. Environmental Protection Agency","edition":"EPA web table (fetched 2026-10-09); 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