Passage Data · Check a report · Use it from your AI

Granite Rock Company

Crushed And Broken Granite, Aromas, California. NPDES permit CA0005274 expired Nov 30, 2022; its limits still apply. Last 12 months: over a limit 6 times (last January 2026), 1 of 10 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 29 days after each period: form A monthly (39 values)
Last report on file
July 2026
Oct 2024 – Sep 2025
10 values over a limit, 45 required values missing, 3 of 12 reports late

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

Period endingParameterReportedLimitOver by
December 2025Di[2-ethylhexyl] phthalate [DEHP], monthly average≤ 3.4 ug/L≤ 1.8 ug/L89%
December 2025Molybdenum, total [as Mo], monthly average15 ug/L≤ 10 ug/L50%
December 2025Solids, total dissolved, monthly average2200 mg/L≤ 1000 mg/L120%
January 2026Copper, total recoverable, monthly average12.75 ug/L≤ 12 ug/L6%
January 2026Molybdenum, total [as Mo], monthly average11 ug/L≤ 10 ug/L10%
January 2026Solids, total dissolved, monthly average2300 mg/L≤ 1000 mg/L130%

Limits in force (39)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitinstantaneous minimumreport only (deg F)all year
Turbiditydaily maximum≤ 50 NTUall year
pHminimum≥ 7 SUall year
pHmaximum≤ 8.3 SUall year
Solids, total suspendedmonthly average≤ 50 mg/Lall year
Cyanide, total [as CN]monthly average≤ 4.3 ug/Lall year
Cyanide, total [as CN]daily maximum≤ 8.5 ug/Lall year
Sodium, total recoverabledaily maximumreport only (mg/L)all year
Chloride [as Cl]daily maximumreport only (mg/L)all year
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year
Iron, total recoverablemonthly average≤ 1000 ug/Lall year
Boron, total recoverabledaily maximumreport only (mg/L)all year
Molybdenum, total [as Mo]monthly average≤ 10 ug/Lall year
Nickel, total recoverabledaily maximumreport only (ug/L)all year
Aluminum, total recoverablemonthly average≤ 1000 ug/Lall year
Aluminum, total recoverabledaily maximum≤ 5000 ug/Lall year
Copper, total recoverablemonthly average≤ 12 ug/Lall year
Copper, total recoverabledaily maximum≤ 24 ug/Lall year
Oil and greasedaily maximumreport only (mg/L)all year
Chlorpyrifosdaily maximumreport only (ug/L)all year
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ 1.8 ug/Lall year
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 3.6 ug/Lall year
Diazinondaily maximumreport only (ug/L)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Solids, total dissolvedmonthly average≤ 1000 mg/Lall year
Mercury, total recoverablemonthly average≤ .05 ug/Lall year
Mercury, total recoverabledaily maximum≤ .1 ug/Lall year
Coliform, fecal generaldaily maximumreport only (MPN/100mL)all year
Sediment, suspendedmonthly averagereport only (mg/L)all year
Sediment, suspendeddaily maximumreport only (mg/L)all year
%Effect Static 4 Day Chronic Raphidocelis subcapitatamonthly medianreport only (% effect)all year
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly medianreport only (% effect)all year
%Effect Static Renewal 7Day Chronic Pimephales promelasmonthly medianreport only (% effect)all year
Pass/Fail Static 4 Day Chronic Raphidocelis subcapitatamonthly median≤ 0 pass=0;fail=1all year
Pass/Fail Static 4 Day Chronic Raphidocelis subcapitatadaily maximum≤ 0 pass=0;fail=1all year
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly median≤ 0 pass=0;fail=1all year
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximum≤ 0 pass=0;fail=1all year
Pass/Fail Static Renewal 7Day Chronic Pimephales promelasmonthly median≤ 0 pass=0;fail=1all year
Pass/Fail Static Renewal 7Day Chronic Pimephales promelasdaily maximum≤ 0 pass=0;fail=1all year

How strict are these limits?

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

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

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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/CA0005274 · MCP: https://passage-data.com/mcp