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Material Sand and Stone Corporation

Construction Sand And Gravel, North Smithfield, Rhode Island. NPDES permit RI0024007, in force until Dec 31, 2026. Last 12 months: over a limit 3 times (last December 2025), 24 required values missing, 2 of 8 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A quarterly (14 values), outfall 002 form A quarterly (12 values)
Renewal application due
Jul 4, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 28 required values missing, 4 of 8 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
December 2025Iron, total [as Fe], monthly average3.12 mg/L≤ .8 mg/L290%
December 2025Solids, total suspended, daily maximum204 mg/L≤ 45 mg/L353%
December 2025Solids, total suspended, monthly average204 mg/L≤ 25 mg/L716%

Limits in force (26)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 25 mg/Lall year001
Solids, total suspendeddaily maximum≤ 45 mg/Lall year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year001
Iron, total [as Fe]monthly average≤ .8 mg/Lall year001
Iron, total [as Fe]daily maximumreport only (mg/L)all year001
Zinc, total [as Zn]monthly average≤ 29.7 ug/Lall year001
Zinc, total [as Zn]daily maximum≤ 29.7 ug/Lall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Enterococcimonthly averagereport only (CFU/100mL)all year001
Enterococcidaily maximumreport only (CFU/100mL)all year001
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendedmonthly averagereport only (mg/L)all year002
Solids, total suspendeddaily maximumreport only (mg/L)all year002
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year002
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year002
Zinc, total [as Zn]monthly averagereport only (ug/L)all year002
Zinc, total [as Zn]daily maximumreport only (ug/L)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Enterococcimonthly averagereport only (CFU/100mL)all year002
Enterococcidaily maximumreport only (CFU/100mL)all year002

How strict are these limits?

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

Same industry: the 3 Mining and Quarrying of Nonmetallic Minerals permits in Rhode Island.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/RI0024007 · MCP: https://passage-data.com/mcp