{"permit":"MD0066087","name":"HARWOOD LANDFILL, INC.","state":"MD","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/MD0066087"},"about":[{"label":"What it is","text":"Refuse Systems (EPA's industry listing)"},{"label":"Where","text":"Harwood, Maryland","href":"https://www.openstreetmap.org/?mlat=38.857222&mlon=-76.672222#map=14/38.857222/-76.672222"},{"label":"Last 12 months","text":"Over a limit 8 times, last in June 2026 (Iron, total [as Fe]; Cadmium, total [as Cd])"},{"label":"Permit","text":"In force until Jul 31, 2030"}],"renewal_due":null,"renewal_check":null,"sector":{"state":"MD","sic":"4953","permits":14,"list":"https://passage-data.com/api/v1/permits?state=MD&sic=4953","page":"https://passage-data.com/dmr/s/MD/4953"},"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":8,"over_by":[["Iron, total [as Fe]",6],["Cadmium, total [as 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fetch.","arguments":{"state":"MD","sic":"4953"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=MD&sic=4953","url":"https://passage-data.com/api/v1/permits?state=MD&sic=4953","page":"https://passage-data.com/dmr/s/MD/4953"},{"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":"iron","place":"US-MD","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=iron&place=US-MD&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=iron&place=US-MD&medium=surface_water","page":"https://passage-data.com/limits/US-MD/iron"},{"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":"MD0066087"},"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=MD0066087"},{"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":"MD0066087"},"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=MD0066087"}]}