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Gma Garnet (USA) Corp

Industrial Sand, Houston, Texas. NPDES permit TX0143111, in force until Jun 5, 2028. Last 12 months: over a limit 3 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 20 days after each period: form A monthly (6 values)
Renewal application due: Dec 8, 2027 · 180 days before expiry; your permit may set another date
Last report on file: September 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 1 of 2 reports late

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

Period ending	Parameter	Reported	Limit	Over by
May 2026	Solids, total suspended, daily maximum	55.7 mg/L	≤ 45 mg/L	24%
June 2026	Solids, total suspended, daily average	29.12 mg/L	≤ 25 mg/L	16%
June 2026	Solids, total suspended, daily maximum	80.3 mg/L	≤ 45 mg/L	78%

Limits in force (6)

Parameter	Statistic	Limit	Months
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	daily average	≤ 25 mg/L	all year
Solids, total suspended	daily maximum	≤ 45 mg/L	all year
Flow, in conduit or thru treatment plant	daily average	≤ .29 MGD	all year
Flow, in conduit or thru treatment plant	daily maximum	≤ .65 MGD	all year

How strict are these limits?

Solids, total suspended, daily maximum 45 mg/L — stricter than 43% of 244 other minor industrial and other permits in Texas; 36% have the same limit
Solids, total suspended, daily average 25 mg/L — stricter than 12% of 777 other minor industrial and other permits in Texas; 7% have the same limit

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

Same industry: the 13 Mining and Quarrying of Nonmetallic Minerals permits in Texas.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0143111 · MCP: https://passage-data.com/mcp