River Cement Company — NPDES permit MO0000035: limits, due date and EPA's record

Cement, Hydraulic, Festus, Missouri. NPDES permit MO0000035, in force until Dec 31, 2028. Last 12 months: no values over a limit, 6 of 117 reports late. Source: EPA ECHO, Oct 22, 2026.

Limits in force (162)

Parameter	Statistic	Limit	Months	Outfall
Temperature, water deg. fahrenheit	daily maximum	≤ 90 deg F	all year	001
Temperature, water deg. fahrenheit	monthly average	≤ 90 deg F	all year	001
pH	minimum	≥ 6.5 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
Solids, total suspended	daily maximum	≤ 80 mg/L	all year	001
Solids, total suspended	monthly average	≤ 60 mg/L	all year	001
Oil and grease [soxhlet extr.] tot.	daily maximum	≤ 15 mg/L	all year	001
Oil and grease [soxhlet extr.] tot.	monthly average	≤ 10 mg/L	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Chlorine, total residual	daily maximum	≤ 17 ug/L	all year	001
Chlorine, total residual	monthly average	≤ 8 ug/L	all year	001
Temperature, water deg. fahrenheit	daily maximum	≤ 90 deg F	all year	002
Temperature, water deg. fahrenheit	monthly average	≤ 90 deg F	all year	002
pH	minimum	≥ 6.5 SU	all year	002
pH	maximum	≤ 9 SU	all year	002
Solids, total suspended	daily maximum	≤ 80 mg/L	all year	002
Solids, total suspended	monthly average	≤ 60 mg/L	all year	002
Oil and grease [soxhlet extr.] tot.	daily maximum	≤ 15 mg/L	all year	002
Oil and grease [soxhlet extr.] tot.	monthly average	≤ 10 mg/L	all year	002
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	002
Nitrogen, ammonia total [as N]	monthly average	report only (mg/L)	all year	002
Nitrogen, Kjeldahl, total [as N]	daily maximum	report only (mg/L)	all year	002
Nitrogen, Kjeldahl, total [as N]	monthly average	report only (mg/L)	all year	002
Nitrite + Nitrate total [as N]	daily maximum	report only (mg/L)	all year	002
Nitrite + Nitrate total [as N]	monthly average	report only (mg/L)	all year	002
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	002
Phosphorus, total [as P]	monthly average	report only (mg/L)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	002
Chlorine, total residual	daily maximum	≤ 17 ug/L	all year	002
Chlorine, total residual	monthly average	≤ 8 ug/L	all year	002
pH	minimum	≥ 6.5 SU	all year	003
pH	maximum	≤ 9 SU	all year	003
Solids, total suspended	daily maximum	≤ 80 mg/L	all year	003
Solids, total suspended	monthly average	≤ 60 mg/L	all year	003
Solids, settleable	daily maximum	≤ 1.5 mL/L	all year	003
Solids, settleable	monthly average	≤ 1 mL/L	all year	003
Oil and grease [soxhlet extr.] tot.	daily maximum	≤ 15 mg/L	all year	003
Oil and grease [soxhlet extr.] tot.	monthly average	≤ 10 mg/L	all year	003
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	003
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	003
Temperature, water deg. fahrenheit	daily maximum	≤ 90 deg F	all year	007
Temperature, water deg. fahrenheit	monthly average	≤ 90 deg F	all year	007
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	007
Oxygen demand, chem. [high level] [COD]	monthly average	report only (mg/L)	all year	007
pH	minimum	≥ 6.5 SU	all year	007
pH	maximum	≤ 9 SU	all year	007
Solids, total suspended	daily maximum	≤ 80 mg/L	all year	007
Solids, total suspended	monthly average	≤ 60 mg/L	all year	007
Oil and grease [soxhlet extr.] tot.	daily maximum	≤ 15 mg/L	all year	007
Oil and grease [soxhlet extr.] tot.	monthly average	≤ 10 mg/L	all year	007
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	007
Nitrogen, ammonia total [as N]	monthly average	report only (mg/L)	all year	007
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	007
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	007
Chlorine, total residual	daily maximum	≤ 17 ug/L	all year	007
Chlorine, total residual	monthly average	≤ 8 ug/L	all year	007
Temperature, water deg. fahrenheit	daily maximum	≤ 90 deg F	all year	010
Temperature, water deg. fahrenheit	monthly average	≤ 90 deg F	all year	010
pH	minimum	≥ 6.5 SU	all year	010
pH	maximum	≤ 9 SU	all year	010
Solids, total suspended	daily maximum	≤ 80 mg/L	all year	010
Solids, total suspended	monthly average	≤ 60 mg/L	all year	010
Oil and grease [soxhlet extr.] tot.	daily maximum	≤ 15 mg/L	all year	010
Oil and grease [soxhlet extr.] tot.	monthly average	≤ 10 mg/L	all year	010
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	010
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	010
Chlorine, total residual	daily maximum	≤ 17 ug/L	all year	010
Chlorine, total residual	monthly average	≤ 8 ug/L	all year	010
BOD, 5-day, 20 deg. C	daily maximum	≤ 45 mg/L	all year	011
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year	011
pH	minimum	≥ 6.5 SU	all year	011
pH	maximum	≤ 9 SU	all year	011
Solids, total suspended	daily maximum	≤ 45 mg/L	all year	011
Solids, total suspended	monthly average	≤ 30 mg/L	all year	011
Nitrogen, ammonia total [as N]	daily maximum	≤ 3.7 mg/L	Apr–Sep	011
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.5 mg/L	Jan, Feb, Mar, Oct, Nov, Dec	011
Nitrogen, ammonia total [as N]	monthly average	≤ 1.4 mg/L	Apr–Sep	011
Nitrogen, ammonia total [as N]	monthly average	≤ 2.8 mg/L	Jan, Feb, Mar, Oct, Nov, Dec	011
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	011
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	011
E. coli	daily maximum	≤ 1030 #/100mL	Apr–Oct	011
E. coli	30-day geometric mean	≤ 206 #/100mL	Apr–Oct	011
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	012
pH	minimum	≥ 6.5 SU	all year	012
pH	maximum	≤ 9 SU	all year	012
Solids, total suspended	daily maximum	≤ 50 mg/L	all year	012
Solids, settleable	daily maximum	≤ 1.5 mL/L	all year	012
Oil and grease [soxhlet extr.] tot.	daily maximum	≤ 15 mg/L	all year	012
Rainfall	daily maximum	report only (in)	all year	012
Storm water flow	daily maximum	report only (MGD)	all year	012
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	013
pH	minimum	≥ 6.5 SU	all year	013
pH	maximum	≤ 9 SU	all year	013
Solids, total suspended	daily maximum	≤ 80 mg/L	all year	013
Solids, settleable	daily maximum	≤ 1.5 mL/L	all year	013
Oil and grease [soxhlet extr.] tot.	daily maximum	≤ 15 mg/L	all year	013
Rainfall	daily maximum	report only (in)	all year	013
Storm water flow	daily maximum	report only (MGD)	all year	013
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	014
pH	minimum	≥ 6.5 SU	all year	014
pH	maximum	≤ 9 SU	all year	014
Solids, total suspended	daily maximum	≤ 80 mg/L	all year	014
Solids, settleable	daily maximum	≤ 1.5 mL/L	all year	014
Oil and grease [soxhlet extr.] tot.	daily maximum	≤ 15 mg/L	all year	014
Rainfall	daily maximum	report only (in)	all year	014
Storm water flow	daily maximum	report only (MGD)	all year	014
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	015
pH	minimum	≥ 6.5 SU	all year	015
pH	maximum	≤ 9 SU	all year	015
Solids, total suspended	daily maximum	≤ 80 mg/L	all year	015
Solids, settleable	daily maximum	≤ 1.5 mL/L	all year	015
Oil and grease [soxhlet extr.] tot.	daily maximum	≤ 15 mg/L	all year	015
Rainfall	daily maximum	report only (in)	all year	015
Storm water flow	daily maximum	report only (MGD)	all year	015
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	016
pH	minimum	≥ 6.5 SU	all year	016
pH	maximum	≤ 9 SU	all year	016
Solids, total suspended	daily maximum	≤ 80 mg/L	all year	016
Solids, settleable	daily maximum	≤ 1.5 mL/L	all year	016
Oil and grease [soxhlet extr.] tot.	daily average	≤ 15 mg/L	all year	016
Rainfall	daily maximum	report only (in)	all year	016
Storm water flow	daily maximum	report only (MGD)	all year	016
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	017
pH	minimum	≥ 6.5 SU	all year	017
pH	maximum	≤ 9 SU	all year	017
Solids, total suspended	daily maximum	≤ 50 mg/L	all year	017
Solids, settleable	daily maximum	≤ 1.5 mL/L	all year	017
Oil and grease [soxhlet extr.] tot.	daily maximum	≤ 15 mg/L	all year	017
Rainfall	daily maximum	report only (in)	all year	017
Storm water flow	daily maximum	report only (MGD)	all year	017
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	018
pH	minimum	≥ 6.5 SU	all year	018
pH	maximum	≤ 9 SU	all year	018
Solids, total suspended	daily maximum	≤ 80 mg/L	all year	018
Solids, settleable	daily maximum	≤ 1.5 mL/L	all year	018
Oil and grease [soxhlet extr.] tot.	daily maximum	≤ 15 mg/L	all year	018
Rainfall	daily maximum	report only (in)	all year	018
Storm water flow	daily maximum	report only (MGD)	all year	018
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	021
pH	minimum	≥ 6.5 SU	all year	021
pH	maximum	≤ 9 SU	all year	021
Solids, total suspended	daily maximum	≤ 80 mg/L	all year	021
Solids, settleable	daily maximum	≤ 1.5 mL/L	all year	021
Oil and grease [soxhlet extr.] tot.	daily maximum	≤ 15 mg/L	all year	021
Rainfall	daily maximum	report only (in)	all year	021
Storm water flow	daily maximum	report only (MGD)	all year	021
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	022
pH	minimum	≥ 6.5 SU	all year	022
pH	maximum	≤ 9 SU	all year	022
Solids, total suspended	daily maximum	≤ 80 mg/L	all year	022
Solids, settleable	daily maximum	≤ 1.5 mL/L	all year	022
Oil and grease [soxhlet extr.] tot.	daily maximum	≤ 15 mg/L	all year	022
Rainfall	daily maximum	report only (in)	all year	022
Storm water flow	daily maximum	report only (MGD)	all year	022
Temperature, water deg. fahrenheit	daily maximum	report only (deg F)	all year	SMD
Temperature, water deg. fahrenheit	monthly average minimum	report only (deg F)	all year	SMD
Temp. diff. between up/down stream deg. F	daily maximum	≤ 5 deg F	all year	SMD
Temp. diff. between up/down stream deg. F	monthly average	≤ 5 deg F	all year	SMD
Temperature, water deg. fahrenheit	daily maximum	report only (deg F)	all year	SMU
Temperature, water deg. fahrenheit	monthly average	report only (deg F)	all year	SMU

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/MO0000035 · MCP: https://passage-data.com/mcp