list_permits

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Which facilities in a US state hold a discharge permit, which of them are in one industry (paper mills, meat packing, sewage treatment), which went over a limit lately or face a renewal, and which must meet a new or tighter limit already written into their permit? The state's individual NPDES permits with limits, as EPA's national file (ECHO / ICIS-NPDES) lists them, in one call: each permit's number, facility name, whether EPA rates it major, its primary SIC code and the words EPA prints for it, its 12-month record (times over a limit, on which parameters, required values not reported; null when EPA's file holds no reports), its expiry and renewal, EPA's facility type and design flow, the limits taking effect later (each with its begin date and the plant's median reported value today), and the addresses of its page and of get_permit's answer. `screen` counts the industry's record, renewals and later limits in one sentence, and `screen.narrow` gives the address of each narrower list. `industry` keeps the permits whose SIC description has a word starting with each word given; `sic` the codes that start with the digits given; `facility_type` and `min_flow_mgd` the sewage plants or industrial facilities, and those of at least that design flow; `over_limit`, `parameter`, `renewal` and `upcoming` keep those that went over a limit, over one on that parameter, whose renewal is due or past, or that have a limit taking effect later. A permit EPA's file gives no SIC never matches an industry filter (`without_industry` says how many), nor one with no design flow min_flow_mgd (`without_flow`). get_permit gives one permit's limits.