{"query":{"parameter":"chromium","place":"US-CO","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-CO","US"],"parameter_keys":["cas:7440-47-3","cas:16065-83-1","name:chromium (+3)","name:chromium +3, total","cas:18540-29-9","name:chromium (+6)","name:chromium +6","name:chromium +6, total","name:chromium total","name:chromium, total","name:chromium (vi) (freshwater) chromium (vi) marine","cas:92203-02-6","name:total chromium","name:chrome total","name:cromo totale"],"names_matched":[["chromium","cas:7440-47-3"],["chromium 3","cas:16065-83-1"],["chromium 3","name:chromium (+3)"],["chromium 3 total","name:chromium +3, total"],["chromium 3 total recoverable","name:chromium (+3)"],["chromium 6","cas:18540-29-9"],["chromium 6","name:chromium (+6)"],["chromium 6","name:chromium +6"],["chromium 6 total","name:chromium +6, total"],["chromium 6 total recoverable","name:chromium (+6)"],["chromium hex","cas:18540-29-9"],["chromium hex dissolved","cas:18540-29-9"],["chromium 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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":2724,"offset":0,"returned":50,"next_offset":50,"rows":[{"id":"cbb44df1cea70895","parameter":"Chromium III","value":"e(0.819*ln(hardness)+2.5736)","unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16065-83-1","place":["US-CO"],"conditions":["receiving_water is freshwater","a segment whose standards adopt the table value standards (TVS) of Table III (segment tables in Regulations 32 to 38)","segments classified for aquatic life","hardness-dependent: the cell's equation of the hardness (mg/L CaCO3, at most 400; Table III footnote 3); Table IV works it at set hardness"],"cite":{"instrument":"us_co_wqs","title":"Colorado Regulation No. 31 (5 CCR 1002-31) Basic Standards and Methodologies for Surface Water: Table B organic chemicals, Table III metals, 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