{"permit":"MA0004561","name":"HOLLINGSWORTH & VOSE CO","state":"MA","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/MA0004561"},"about":[{"label":"What it is","text":"Paper Mills (EPA's industry listing) · rated a major discharger by EPA"},{"label":"Where","text":"West Groton, Massachusetts","href":"https://www.openstreetmap.org/?mlat=42.613056&mlon=-71.634722#map=14/42.613056/-71.634722"},{"label":"Last 12 months","text":"Over a limit 13 times, last in September 2026 (Zinc, total [as Zn]; NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia; LC50 Static 48Hr Acute Ceriodaphnia dubia). 2 required values not reported. 2 of 28 reports filed late"},{"label":"Permit","text":"Expired Aug 31, 2026; 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":"2026-03-04","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/MA0004561#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":"MA","sic":"26","permits":6,"list":"https://passage-data.com/api/v1/permits?state=MA&sic=26","page":"https://passage-data.com/dmr/s/MA/26"},"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":13,"over_by":[["Zinc, total [as Zn]",9],["NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia",1],["LC50 Static 48Hr Acute Ceriodaphnia dubia",1]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Zinc, total [as Zn]","times":9,"find_limits":{"parameter":"zinc","place":"US-MA","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=zinc&place=US-MA&medium=surface_water"}],"limits":[{"outfall":"001","parameter":"Temperature, water deg. centigrade","parameter_code":"00010","statistic":"daily maximum","qualifier":null,"value":null,"unit":"deg C","report_only":true,"enforceable":true,"months":"all","limit_set":"AMBIENT TOXICITY RESULT"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. 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C","parameter_code":"00310","statistic":"daily maximum","qualifier":"<=","value":"480","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"WASTEWATER COMBINATION PROCESS"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"WASTEWATER COMBINATION PROCESS"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"8.3","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"WASTEWATER COMBINATION PROCESS"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily maximum","qualifier":null,"value":null,"unit":"SU","report_only":true,"enforceable":true,"months":"all","limit_set":"AMBIENT TOXICITY RESULT"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly 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001"}],"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":"MA","sic":"26"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=MA&sic=26","url":"https://passage-data.com/api/v1/permits?state=MA&sic=26","page":"https://passage-data.com/dmr/s/MA/26"},{"tool":"find_limits","says":"What do the rules say about what it went over on? find_limits gives the cited state and federal limits for it, each with its rule; `get` is the address to fetch, and `over_limits` holds one for each parameter.","arguments":{"parameter":"zinc","place":"US-MA","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=zinc&place=US-MA&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=zinc&place=US-MA&medium=surface_water","page":"https://passage-data.com/limits/US-MA/zinc"},{"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":"MA0004561"},"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=MA0004561"},{"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":"MA0004561"},"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=MA0004561"}]}