{"query":{"parameter":"heptachlor","place":"US-IA","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-IA","US"],"parameter_keys":["cas:1024-57-3","cas:76-44-8","name:heptachlor*","name:heptachlor & heptachlor epoxide","name:heptachlor und heptachlorepoxid"],"names_matched":[["heptachlor","cas:1024-57-3"],["heptachlor","cas:76-44-8"],["heptachlor","name:heptachlor*"],["heptachlor heptachlor epoxide total","name:heptachlor & heptachlor epoxide"],["heptachlor und heptachlorepoxid","name:heptachlor und heptachlorepoxid"]],"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":50,"offset":0,"returned":50,"next_offset":null,"rows":[{"id":"86105b046220663b","parameter":"Heptachlor epoxide","value":".0038","value_num":0.0038,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1024-57-3","place":["US-IA"],"conditions":["receiving_water is freshwater","class B(CW1) waters: cold water aquatic life, type 1"],"cite":{"instrument":"us_ia_wqs","title":"Iowa Administrative Code 567—Chapter 61 Water Quality Standards: Table 1 criteria by use designation, Table 2 dissolved oxygen, pH, Table 4 sulfate, and the livestock-watering ion guidelines kept in effect","issuer":"State of Iowa, Environmental Protection Commission (Department of Natural Resources)","edition":"567 IAC chapter 61, effective February 2, 2022 (IAC 2/9/22), as US EPA posts it in effect for CWA purposes (cover February 13, 2023: 61.3(2)\"g\" kept in effect, EPA having reserved action on its removal; 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