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Rock of Ages Corp

Industrial or other facility, Graniteville, Vermont. NPDES permit VT0020630 expired Mar 31, 2016; its limits still apply. Last 12 months: no values over a limit, 6 of 9 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: outfall 001 form A quarterly (3 values), outfall 002 form A quarterly (3 values), outfall 003 form A quarterly (3 values)
Last report on file: June 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 3 of 12 reports late

Limits in force (9)

Parameter	Statistic	Limit	Months	Outfall
Turbidity	daily maximum	≤ 10 NTU	all year	001
pH	minimum	≥ 6.5 SU	all year	001
pH	maximum	≤ 8.5 SU	all year	001
Turbidity	daily maximum	≤ 10 NTU	all year	002
pH	minimum	≥ 6.5 SU	all year	002
pH	maximum	≤ 8.5 SU	all year	002
Turbidity	daily maximum	≤ 10 NTU	all year	003
pH	minimum	≥ 6.5 SU	all year	003
pH	maximum	≤ 8.5 SU	all year	003

How strict are these limits?

Turbidity, daily maximum 10 NTU — stricter than 88% of 298 other minor industrial and other permits nationwide; 8% have the same limit

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/VT0020630 · MCP: https://passage-data.com/mcp