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Atomic Sand LLC

Construction Sand And Gravel, Beech Island, South Carolina. NPDES permit SC0027529 expired May 31, 2025; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 29 days after each period: form 1 monthly (6 values), form 2 quarterly
Last report on file: August 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 0 of 16 reports late

Limits in force (8)

Parameter	Statistic	Limit	Months
pH	instantaneous minimum	≥ 5 SU	all year
pH	instantaneous maximum	≤ 8.5 SU	all year
Solids, total suspended	monthly average	≤ 25 mg/L	all year
Solids, total suspended	daily maximum	≤ 45 mg/L	all year
Oil & Grease	monthly average	≤ 10 mg/L	all year
Oil & Grease	daily maximum	≤ 15 mg/L	all year
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year

How strict are these limits?

Solids, total suspended, monthly average 25 mg/L — stricter than 85% of 92 other minor industrial and other permits in South Carolina; 8% have the same limit
Solids, total suspended, daily maximum 45 mg/L — stricter than 83% of 85 other minor industrial and other permits in South Carolina; 4% have the same limit
Oil & Grease, monthly average 10 mg/L — stricter than 32% of 870 other minor industrial and other permits nationwide; 62% have the same limit

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

Same industry: the 6 Mining and Quarrying of Nonmetallic Minerals permits in South Carolina.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/SC0027529 · MCP: https://passage-data.com/mcp