{"query":{"parameter":"tetrachloroethane 1 1 2 2","place":"US-NH","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-NH","US"],"parameter_keys":["cas:79-34-5","name:tetrachloroethane 1,1,2,2","cas:25322-20-7","name:1, 1, 2, 2-tetrachloroethane","name:1,1,2,2−tetrachloroethane"],"names_matched":[["tetrachloroethane 1 1 2 2","cas:79-34-5"],["tetrachloroethane 1 1 2 2","name:tetrachloroethane 1,1,2,2"],["tetrachloroethanes","cas:25322-20-7","tetrachloroethanes"],["1 1 2 2 tetrachloroethane","name:1, 1, 2, 2-tetrachloroethane","1 1 2 2 tetrachloroethane"],["1 1 2 2 tetrachloroethane","name:1,1,2,2−tetrachloroethane","1 1 2 2 tetrachloroethane"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order","not_sent":{"rows":1,"names":["Tetrachloroethanes"],"says":"1 rows share a parameter key with a longer name holding \"tetrachloroethane 1 1 2 2\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"tetrachloroethane 1 1 2 2\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":14,"offset":0,"returned":14,"next_offset":null,"rows":[{"id":"2a30b914329cbf61","parameter":"Tetrachloroethane 1,1,2,2","value":"2,400","value_num":2400,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:79-34-5","place":["US-NH"],"conditions":["receiving_water is freshwater"],"cite":{"instrument":"us_nh_wqs","title":"New Hampshire Env-Wq 1700 Surface Water Quality Regulations: Table 1703-1 water quality criteria for toxic substances (fresh and marine acute/chronic aquatic life; human health), and class dissolved oxygen and pH","issuer":"State of New Hampshire, Department of Environmental Services","edition":"Env-Wq 1700 effective December 13, 2022 as US EPA posts it in effect for CWA purposes (cover page April 6, 2023), with the human health columns from the February 13, 2015 rule EPA also posts (its 2022 revisions still under EPA review); the state re-adopted Env-Wq 1700 effective 2-26-25 (#14203), not what EPA posts","source_url":"https://www.epa.gov/system/files/documents/2023-04/wqs-nh-chapter1700-2022.pdf","source_sha256":"6749401e33fb746b1a37e31e356dbaa9ccff1f936edc9cd3948b1bae47c796f2","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Env-Wq 1703.21 Table 1703-1","page":22,"quote":null}},{"id":"da29dc1e281bb6d4","parameter":"Tetrachloroethane 1,1,2,2","value":"9,020","value_num":9020,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:79-34-5","place":["US-NH"],"conditions":["receiving_water is marine"],"cite":{"instrument":"us_nh_wqs","title":"New Hampshire Env-Wq 1700 Surface Water Quality Regulations: Table 1703-1 water quality criteria for toxic substances (fresh and marine acute/chronic aquatic life; 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held for fresh water, tidal water not being drunk)"],"cite":{"instrument":"us_nh_wqs","title":"New Hampshire Env-Wq 1700 Surface Water Quality Regulations: Table 1703-1 water quality criteria for toxic substances (fresh and marine acute/chronic aquatic life; human health), and class dissolved oxygen and pH","issuer":"State of New Hampshire, Department of Environmental Services","edition":"Env-Wq 1700 effective December 13, 2022 as US EPA posts it in effect for CWA purposes (cover page April 6, 2023), with the human health columns from the February 13, 2015 rule EPA also posts (its 2022 revisions still under EPA review); the state re-adopted Env-Wq 1700 effective 2-26-25 (#14203), not what EPA posts","source_url":"https://www.epa.gov/system/files/documents/2023-04/wqs-nh-chapter1700-2022.pdf","source_sha256":"6749401e33fb746b1a37e31e356dbaa9ccff1f936edc9cd3948b1bae47c796f2","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Env-Wq 1703.21 Table 1703.1 (2015)","page":24,"quote":null}},{"id":"ea45c3211816066c","parameter":"Tetrachloroethane 1,1,2,2","value":"11 ugc","value_num":11,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:tetrachloroethane 1,1,2,2","place":["US-NH"],"conditions":["receiving_water is freshwater"],"cite":{"instrument":"us_nh_wqs","title":"New Hampshire Env-Wq 1700 Surface Water Quality Regulations: Table 1703-1 water quality criteria for toxic substances (fresh and marine acute/chronic aquatic life; 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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."],"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","section":"40 CFR 268.48, Table UTS, Organic Constituents, wastewater standard","page":null,"quote":"1,1,2,2-Tetrachloroethane 79-34-5 0.057 6.0"}},{"id":"0d92b367745bc5e8","parameter":"1,1,2,2-Tetrachloroethane","value":"6.0","value_num":6,"unit":"mg/kg","statistic":"instant","direction":"max","kind":"limit","medium":"product","level":"national","parameter_key":"cas:79-34-5","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."],"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","section":"40 CFR 268.48, Table UTS, Organic Constituents, nonwastewater standard","page":null,"quote":"1,1,2,2-Tetrachloroethane 79-34-5 0.057 6.0"}},{"id":"f006d1b141ee41cd","parameter":"1,1,2,2-Tetrachloroethane","value":"0.2","value_num":0.2,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:79-34-5","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":"unchanged"},"section":"National Recommended Water Quality Criteria — Human Health Criteria Table","page":null,"quote":"1,1,2,2-Tetrachloroethane (P) 79345 0.2 3 2015"}},{"id":"c413b9b660e5c2a4","parameter":"1,1,2,2-Tetrachloroethane","value":"3","value_num":3,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:79-34-5","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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or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}