{"query":{"parameter":"hydrogen sulfide","place":"US-MT","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-MT","US"],"parameter_keys":["cas:7783-06-4","cas:115408-95-2","name:undisassociated hydrogen sulfide","cas:3547-33-9","cas:538-74-9","cas:97-74-5","cas:463-58-1","cas:592-88-1","cas:544-40-1","cas:352-93-2","cas:75-18-3","cas:111-47-7","cas:3698-89-3","cas:2469-45-6","cas:3698-94-0","cas:420-12-2","cas:6294-31-1","cas:625-80-9","cas:2690-08-6","cas:7446-34-6","name:sulfide, easily liberated","name:sulfides, total","name:hydrogen sulphide","name:sulfure d’hydrogene"],"names_matched":[["hydrogen sulfide","cas:7783-06-4"],["cyclohexene 4 ethenyl reaction products with hydrogen sulfide h2s","cas:115408-95-2"],["undisassociated hydrogen sulfide","name:undisassociated hydrogen sulfide"],["2 hydroxyethyl octyl sulfide","cas:3547-33-9","sulfide"],["benzyl sulfide","cas:538-74-9","sulfide"],["bis dimethylthiocarbamoyl sulfide","cas:97-74-5","sulfide"],["carbonyl 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hydrogene"],["sulfure d hydrogene h2s","name:sulfure d’hydrogene","sulfure d hydrogene"]],"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":111,"offset":0,"returned":50,"next_offset":50,"rows":[{"id":"af9faa0b37e278d8","parameter":"Hydrogen Sulfide","value":"2 NPP","value_num":2,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7783-06-4","place":["US-MT"],"conditions":["receiving_water is freshwater","Montana surface waters (aquatic life standards; DEQ-7 applies to the waters ARM 17.30.620-670 classify)"],"cite":{"instrument":"us_mt_wqs","title":"Montana Circular DEQ-7 Numeric Water Quality Standards: aquatic life acute and chronic and human health surface water standards; 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