{"query":{"parameter":"benzidine","place":"US-GA","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-GA","US"],"parameter_keys":["cas:92-87-5","cas:91-94-1","cas:119-90-4","cas:119-93-7"],"names_matched":[["benzidine","cas:92-87-5"],["dichloro 3 3 benzidine","cas:91-94-1"],["1 1 biphenyl 4 4 diamine 3 3 dichloro","cas:91-94-1","1 1 biphenyl 4 4 diamine"],["1 1 biphenyl 4 4 diamine 3 3 dimethoxy","cas:119-90-4","1 1 biphenyl 4 4 diamine"],["1 1 biphenyl 4 4 diamine 3 3 dimethyl","cas:119-93-7","1 1 biphenyl 4 4 diamine"]],"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","not_sent":{"rows":16,"names":["3,3'-Dichlorobenzidine","Dichlorobenzidine, 3,3'-","Dimethoxybenzidine, 3,3'-","Dimethylbenzidine, 3,3'-"],"says":"16 rows share a parameter key with a longer name holding \"benzidine\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"benzidine\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":8,"offset":0,"returned":8,"next_offset":null,"rows":[{"id":"d06b749dfc20c9c2","parameter":"Benzidine","value":"0.0002 µg/L","value_num":0.0002,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:92-87-5","place":["US-GA"],"conditions":[],"cite":{"instrument":"us_ga_wqs","title":"Ga. Comp. R. & Regs. 391-3-6-.03(5)(e) — Designated Uses and Water Quality Standards, toxic substances (Georgia)","issuer":"State of Georgia, Department of Natural Resources, Environmental Protection Division","edition":"Rule 391-3-6-.03 adopted by the GA DNR Board of Natural Resources January 28, 2022, approved by US EPA Region IV August 31, 2022, as EPA posts it in effect for Clean Water Act purposes","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/gawqs.pdf","source_sha256":"e0c518d793d5f0d8ec496abbfc7ba678b7e0a16a2cfb2f9cf04157b5ac0af7ae","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Ga. Comp. R. & Regs. 391-3-6-.03(5)(e)(iv)","page":12,"quote":"9. Benzidine (CAS RN1 92875) 0.0002 g/L"}},{"id":"eda4dc39079ecf13","parameter":"Benzidine","value":"0.00014","value_num":0.00014,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:92-87-5","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":"Benzidine (P) 92875 0.00014 0.011 2015"}},{"id":"a3ed9cb0344a4d07","parameter":"Benzidine","value":"0.011","value_num":0.011,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:92-87-5","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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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","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":null,"page":null,"quote":null,"table":"ssl","column":"risque"}},{"id":"d7cdbe19d36ff525","parameter":"Benzidine","value":"0.00011","value_num":0.00011,"unit":"µg/L","direction":"max","kind":"guideline","medium":"drinking_water","level":"national","parameter_key":"cas:92-87-5","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","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":null,"page":null,"quote":null,"table":"eau","column":"eau_robinet"}},{"id":"50b3e8818e79a78b","parameter":"Benzidine","value":"0.011","value_num":0.011,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:92-87-5","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 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); 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":"Benzidine (P) 92875 0.00014 0.011 2015"}}],"next":[{"tool":"check_values","says":"Has your user measured this? check_values sets each of their results beside every row held here, with a verdict and the row's cite.","arguments":{"place":"US-GA"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"benzidine\", value, unit}, ...], any other parameters too."},"post":"/api/v1/check"},{"tool":"read_certificate","says":"Has your user a laboratory certificate? read_certificate reads every row it prints, each with its page, and checks them against these limits.","arguments":{"place":"US-GA"},"needs":{"content_base64":"The laboratory's certificate (PDF) or its XLSX, XLS or CSV export, as base64; or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}