{"query":{"parameter":"gases total dissolved","place":"US-MA","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-MA","US"],"parameter_keys":["name:gases","name:gases, total dissolved"],"names_matched":[["gases total dissolved","name:gases"],["gases total dissolved","name:gases, total dissolved"]],"match":"exact","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":2,"offset":0,"returned":2,"next_offset":null,"rows":[{"id":"16bcd8302e300b0d","parameter":"Gases, Total Dissolved","value":"# 110% saturation","value_num":110,"unit":"% saturation","statistic":"hourly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:gases, total dissolved","place":["US-MA"],"conditions":["receiving_water is freshwater","fresh (inland) waters, all classes (314 CMR 4.06(6)(d) Table 29a 'Fresh Water')"],"cite":{"instrument":"us_ma_wqs","title":"314 CMR 4.00 Massachusetts Surface Water Quality Standards: Table 29 generally applicable criteria (29a aquatic life, 29b human health) and 4.05 class dissolved oxygen and pH","issuer":"Commonwealth of Massachusetts, Department of Environmental Protection","edition":"314 CMR 4.00 effective May 1, 2023 (Table 29 as revised 11/12/21), as US EPA posts it in effect for Clean Water Act purposes (EPA has taken no action on Table 29a's diazinon revision)","source_url":"https://www.epa.gov/system/files/documents/2023-06/mawqs-2023.pdf","source_sha256":"fbd41bea9b0ac291b23023ff580ca4349b2b3a6269225bd3218a56037aca1309","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"314 CMR 4.06(6)(d) Table 29a","page":144,"quote":null}},{"id":"0c0c2bcd53432562","parameter":"Gases, Total Dissolved","value":"# 110% saturation","value_num":110,"unit":"% saturation","statistic":"hourly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:gases, total dissolved","place":["US-MA"],"conditions":["receiving_water is marine","coastal and marine waters, all classes (314 CMR 4.06(6)(d) Table 29a 'Coastal and Marine')"],"cite":{"instrument":"us_ma_wqs","title":"314 CMR 4.00 Massachusetts Surface Water Quality Standards: Table 29 generally applicable criteria (29a aquatic life, 29b human health) and 4.05 class dissolved oxygen and pH","issuer":"Commonwealth of Massachusetts, Department of Environmental Protection","edition":"314 CMR 4.00 effective May 1, 2023 (Table 29 as revised 11/12/21), as US EPA posts it in effect for Clean Water Act purposes (EPA has taken no action on Table 29a's diazinon revision)","source_url":"https://www.epa.gov/system/files/documents/2023-06/mawqs-2023.pdf","source_sha256":"fbd41bea9b0ac291b23023ff580ca4349b2b3a6269225bd3218a56037aca1309","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"314 CMR 4.06(6)(d) Table 29a","page":144,"quote":null}}],"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-MA"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"gases total dissolved\", 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-MA"},"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"}]}