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Brox Industries

Crushed And Broken Stone, Dracut, Massachusetts. NPDES permit MA0040177 expired Jun 30, 2024; its limits still apply. Last 12 months: no values over a limit, 3 of 18 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (11 values), form Q quarterly (2 values), form T quarterly (22 values), form Y yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 5 of 18 reports late

Limits in force (37)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)Jul–Sep
Turbiditydaily maximum≤ 25 NTUall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.3 SUall year
pHdaily maximumreport only (SU)Jul–Sep
Solids, total suspendedmonthly average≤ 20 mg/Lall year
Solids, total suspendeddaily maximum≤ 40 mg/Lall year
Oil & Greasemonthly average≤ 10 mg/Lall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jul–Sep
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jul–Sep
Hardness, total [as CaCO3]daily maximumreport only (mg/L)Jul–Sep
Hardness, total [as CaCO3]daily maximumreport only (mg/L)Jul–Sep
Cadmium, total [as Cd]daily maximumreport only (mg/L)Jul–Sep
Cadmium, total [as Cd]daily maximumreport only (mg/L)Jul–Sep
Copper, total [as Cu]daily maximumreport only (mg/L)Jul–Sep
Copper, total [as Cu]daily maximumreport only (mg/L)Jul–Sep
Lead, total [as Pb]daily maximumreport only (mg/L)Jul–Sep
Lead, total [as Pb]daily maximumreport only (mg/L)Jul–Sep
Nickel, total [as Ni]daily minimumreport only (mg/L)Jul–Sep
Nickel, total [as Ni]daily maximumreport only (mg/L)Jul–Sep
Zinc, total [as Zn]daily maximumreport only (mg/L)Jul–Sep
Zinc, total [as Zn]daily maximumreport only (mg/L)Jul–Sep
Aluminum, total [as Al]daily maximumreport only (mg/L)Jul–Sep
Aluminum, total [as Al]daily maximumreport only (mg/L)Jul–Sep
Flow, in conduit or thru treatment plantdaily maximum≤ 1100 gal/minall year
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year
Flow, in conduit or thru treatment plantweekly averagereport only (gal/d)all year
Flow, in conduit or thru treatment plantmonthly totalreport only (gal/mo)all year
E. colidaily maximumreport only (MPN/100mL)all year
Nitrogen, Totaldaily maximumreport only (mg/L)all year
Phosphorus, Totaldaily maximumreport only (mg/L)all year
Perchlorate [ClO4]daily maximumreport only (mg/L)all year
LC50 Static 48Hr Acute Ceriodaphnia dubiadaily minimumreport only (%)Jul–Sep
LC50 Static 48Hr Acute Pimephales promelasdaily minimumreport only (%)Jul–Sep
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiadaily minimumreport only (%)Jul–Sep
Noel Statre 7Day Chronic Pimephalesdaily minimumreport only (%)Jul–Sep

How strict are these limits?

Cited limits by parameter: Massachusetts's rules and the federal ones.

Same industry: the 4 Mining and Quarrying of Nonmetallic Minerals permits in Massachusetts.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MA0040177 · MCP: https://passage-data.com/mcp