{"query":{"parameter":"2 4 5 tp","place":"US-OR","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-OR","US"],"parameter_keys":["cas:93-72-1","name:2,4,5-tp","name:2-(2,4,5-trichloro-phenoxy)-propionic acid","name:2,4,5-trichlorophenoxy propionic acid","name:chlorophenoxy herbicide","name:chlorophenoxy herbicide (2,4,5-tp) [silvex]","name:chlorophenoxy herbicides","name:silvex (2, 4, 5-tp, 2- [2, 4, 5-trichlorophenoxy] propionic acid","name:silvex (2,4,5-tp, 2-[2,4,5-trichlorophenoxy]propionic acid"],"names_matched":[["2 4 5 tp","cas:93-72-1"],["2 4 5 tp","name:2,4,5-tp"],["2 2 4 5 trichloro phenoxy propionic acid 2 4 5 tp or silvex","name:2-(2,4,5-trichloro-phenoxy)-propionic acid"],["2 4 5 trichlorophenoxy propionic acid tp silvex","name:2,4,5-trichlorophenoxy propionic acid"],["chlorophenoxy herbicide 2 4 5 tp","name:chlorophenoxy herbicide"],["chlorophenoxy herbicide 2 4 5 tp silvex","name:chlorophenoxy herbicide (2,4,5-tp) [silvex]"],["chlorophenoxy herbicides 2 4 5 tp","name:chlorophenoxy herbicides"],["silvex 2 4 5 tp 2 2 4 5 trichlorophenoxy propionic acid","name:silvex (2, 4, 5-tp, 2- [2, 4, 5-trichlorophenoxy] propionic acid"],["silvex 2 4 5 tp 2 2 4 5 trichlorophenoxy propionic acid","name:silvex (2,4,5-tp, 2-[2,4,5-trichlorophenoxy]propionic acid"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order; rows for a marine receiving water after the rest, as none of the place's own rows names a marine, salt, estuarine, coastal or ocean water"},"total":11,"offset":0,"returned":11,"next_offset":null,"rows":[{"id":"e6b0f081c67a55ad","parameter":"Chlorophenoxy Herbicide (2,4,5,-TP)","value":"10","value_num":10,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:93-72-1","place":["US-OR"],"conditions":["waters where both fishing and domestic water supply (public and private) are designated uses (OAR 340-041-8033 Table 40)"],"cite":{"instrument":"us_or_wqs","title":"Oregon OAR 340-041-8033: Table 30 aquatic life criteria for toxic pollutants (freshwater and saltwater acute/chronic) and Table 40 human health criteria","issuer":"State of Oregon, Environmental Quality Commission (Department of Environmental Quality)","edition":"OAR Chapter 340 Division 41 effective March 12, 2021, as US EPA posts it in effect for CWA purposes (cover dated June 22, 2021); Tables 30 and 40 as Attachment 2 (Table 40 effective April 18, 2014)","source_url":"https://www.epa.gov/sites/default/files/2020-11/documents/orwqs.pdf","source_sha256":"7b081b31df37b26843f06b807f9d0e5a0e505584ef85e24a0c38b38a782f0bcf","fetched_at":"2026-10-14","section":"OAR 340-041-8033 Table 40","page":108,"quote":null}},{"id":"9fe426b47d9f92ea","parameter":"Chlorophenoxy Herbicide (2,4,5-TP) [Silvex]","value":"100","value_num":100,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:93-72-1","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); 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SSL values are based on DAF=1"],"cite":{"instrument":"us_rsl_soil","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Soil","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","section":null,"page":null,"quote":null,"table":"ssl","column":"risque"}},{"id":"a7e046e84ec32e55","parameter":"Trichlorophenoxypropionic acid, -2,4,5","value":"0.028","value_num":0.028,"unit":"mg/kg","direction":"max","kind":"printed_reference","medium":"soil","level":"national","parameter_key":"cas:93-72-1","place":["US"],"conditions":["Protection of Groundwater SSLs: MCL-based SSL (mg/kg); SSL values are based on DAF=1"],"cite":{"instrument":"us_rsl_soil","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Soil","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","section":null,"page":null,"quote":null,"table":"ssl","column":"mcl"}},{"id":"4cff290558108731","parameter":"Trichlorophenoxypropionic acid, -2,4,5","value":"110","value_num":110,"unit":"µg/L","direction":"max","kind":"guideline","medium":"drinking_water","level":"national","parameter_key":"cas:93-72-1","place":["US"],"conditions":["Tap Water (ug/L): Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024"],"cite":{"instrument":"us_rsl_tapwater","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Tap Water","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","section":null,"page":null,"quote":null,"table":"eau","column":"eau_robinet"}},{"id":"6aefabd4e74ded9c","parameter":"2,4,5-TP","value":"0.05","value_num":0.05,"unit":"mg/l","direction":"max","kind":"guideline","medium":"drinking_water","level":"national","parameter_key":"name:2,4,5-tp","place":["US"],"conditions":["40 CFR 141.2: Maximum contaminant level goals are nonenforceable health goals."],"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","section":"141.50, 141.61","page":null,"quote":null,"column":"mclg"}},{"id":"926b25acb825eebc","parameter":"2,4,5-TP","value":"0.05","value_num":0.05,"unit":"mg/l","direction":"max","kind":"limit","medium":"drinking_water","level":"national","parameter_key":"name:2,4,5-tp","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","section":"141.50, 141.61","page":null,"quote":null,"column":"mcl"}},{"id":"94a5d5c71e76a404","parameter":"Chlorophenoxy Herbicide (2,4,5-TP) [Silvex]","value":"400","value_num":400,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:93-72-1","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","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"}]}