{"permit":"SC0033022","name":"DETYENS SHIPYARD INC","state":"SC","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/SC0033022"},"about":[{"label":"What it is","text":"Ship Building And Repairing (EPA's industry listing)"},{"label":"Where","text":"Mount Pleasant, South Carolina","href":"https://www.openstreetmap.org/?mlat=32.9225785&mlon=-79.830041#map=14/32.9225785/-79.830041"},{"label":"Last 12 months","text":"No values over a limit"},{"label":"Permit","text":"Expired Jul 31, 2021; its limits still apply until a new permit is issued, and EPA still expects the reports"}],"renewal_due":null,"renewal_check":{"offered_because":"permit_expired","application_due":"2021-02-01","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/SC0033022#renewal","says":"Each limit a renewal could tighten or add, from the state's water-quality standards and the federal rules for this kind of discharge, each cited to its rule, beside EPA's 12-month record; a rule we do not hold is named, never guessed. A person orders it on the permit's page with their email; it is sent by email within 5 business days."},"sector":{"state":"SC","sic":"37","permits":3,"list":"https://passage-data.com/api/v1/permits?state=SC&sic=37","page":"https://passage-data.com/dmr/s/SC/37"},"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":0,"over_by":[],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"instantaneous minimum","qualifier":">=","value":"5","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"<=","value":"10","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"daily maximum","qualifier":"<=","value":"20","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"instantaneous minimum","qualifier":">=","value":"6.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"instantaneous maximum","qualifier":"<=","value":"8.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":"<=","value":"60","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Copper, total [as Cu]","parameter_code":"01042","statistic":"monthly average","qualifier":"<=","value":".0037","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Copper, total [as Cu]","parameter_code":"01042","statistic":"daily maximum","qualifier":"<=","value":".0058","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Nickel, total [as Ni]","parameter_code":"01067","statistic":"monthly average","qualifier":"<=","value":".0083","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Nickel, total [as Ni]","parameter_code":"01067","statistic":"daily maximum","qualifier":"<=","value":".075","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Zinc, total [as Zn]","parameter_code":"01092","statistic":"monthly average","qualifier":"<=","value":".086","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Zinc, total [as Zn]","parameter_code":"01092","statistic":"daily maximum","qualifier":"<=","value":".095","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"monthly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly average","qualifier":"<=","value":".0075","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"<=","value":".013","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Enterococci","parameter_code":"61211","statistic":"30-day geometric mean","qualifier":"<=","value":"35","unit":"CFU/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Enterococci","parameter_code":"61211","statistic":"daily maximum","qualifier":"<=","value":"104","unit":"CFU/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Coliform, fecal general","parameter_code":"74055","statistic":"30-day geometric mean","qualifier":"<=","value":"14","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Coliform, fecal general","parameter_code":"74055","statistic":"daily maximum","qualifier":"<=","value":"43","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"0011"},{"outfall":"001","parameter":"Pass/Fail Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)","parameter_code":"TGA3E","statistic":"daily maximum","qualifier":null,"value":null,"unit":"pass=0;fail=1","report_only":true,"enforceable":true,"months":"all","limit_set":"0012"}],"next":[{"tool":"list_permits","says":"Screening this industry? list_permits lists every permit of it in this state in one call, each with its page and its get_permit address; `get` is the address to fetch.","arguments":{"state":"SC","sic":"37"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=SC&sic=37","url":"https://passage-data.com/api/v1/permits?state=SC&sic=37","page":"https://passage-data.com/dmr/s/SC/37"},{"tool":"check_dmr","says":"Before your user files this permit's DMR: check_dmr sets each value beside the permit's limit for that period, with EPA's violation rule's verdict.","arguments":{"permit":"SC0033022"},"needs":{"period_end":"The reporting period: its month (2026-09).","values":"The period's values as your user will file them: [{outfall, parameter, statistic, value, unit}, ...]."},"post":"/api/v1/dmr/check","url":"https://passage-data.com/api/v1/dmr/check","page":"https://passage-data.com/dmr/?permit=SC0033022"},{"tool":"fill_dmr","says":"Has your user the plant's raw daily results? fill_dmr computes the period's DMR values from them, each with the rows it came from.","arguments":{"permit":"SC0033022"},"needs":{"period_end":"The reporting period: its month (2026-09).","rows":"The plant's results: [{date, parameter, value, unit, point}, ...]; or `table`, the lab's or plant's export as text."},"post":"/api/v1/dmr/fill","url":"https://passage-data.com/api/v1/dmr/fill","page":"https://passage-data.com/dmr/?permit=SC0033022"}]}