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Keystone Investments II

Crushed And Broken Stone, Jacksonville, Florida. NPDES permit FL0971995, in force until Nov 27, 2027. Last 12 months: no values over a limit, 103 required values missing, 8 of 14 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form 1 monthly (34 values), form S twice a year
Renewal application due
May 31, 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, 3 required values missing, 1 of 15 reports late

Limits in force (35)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademaximumreport only (deg C)all year
Turbiditymaximumreport only (NTU)all year
Turbiditymaximumreport only (NTU)all year
Turbiditymaximumreport only (NTU)all year
Turbiditymaximum≤ 0 NTUall year
Specific conductancemaximumreport only (umho/cm)all year
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmaximumreport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Oil & Greasemaximum≤ 5 mg/Lall year
Nitrogen, total [as N]maximumreport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly totalreport only (lb/mo)all year
Nitrogen, total [as N]annual total≤ 10 lb/yrall year
Phosphorus, total [as P]maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly totalreport only (lb/mo)all year
Phosphorus, total [as P]annual total≤ 6 lb/yrall year
Iron, total recoverablemaximum≤ .3 mg/Lall year
Aluminum, total recoverablemaximum≤ 1.5 mg/Lall year
Lead, total recoverablemaximum≤ 8.5 ug/Lall year
Copper, total recoverablemaximum≤ 3.7 ug/Lall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantannual averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly average≤ .07 MGDall year
Flow, in conduit or thru treatment plantannual averagereport only (MGD)all year
Mercury, total recoverablemaximum≤ .025 ug/Lall year
LC50 Static Renewal 96Hr Acute Americamysis bahia (formerly Mysidopsis bahia)minimum≥ 100 %all year
LC50 Static Renewal 96Hr Acute Americamysis bahia (formerly Mysidopsis bahia)minimum≥ 100 %all year
LC50 Static Renewal 96Hr Acute Americamysis bahia (formerly Mysidopsis bahia)minimum≥ 100 %all year
LC50 Static Renewal 96Hr Acute Menidiaminimum≥ 100 %all year
LC50 Static Renewal 96Hr Acute Menidiaminimum≥ 100 %all year
LC50 Static Renewal 96Hr Acute Menidiaminimum≥ 100 %all year

How strict are these limits?

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

Same industry: the 22 Mining and Quarrying of Nonmetallic Minerals permits in Florida.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/FL0971995 · MCP: https://passage-data.com/mcp