PERMIT RATIONALE FOR REISSUANCE
Northeast Mississippi Solid Waste Management Authority, Northeast Mississippi Regional Landfill
Tippah County
Walnut, Mississippi
Water NPDES No. MSS049301
July 3, 2025

I.	FACILITY INFORMATION

Facility Name: Northeast Mississippi Solid Waste Management Authority, Northeast Mississippi Regional Landfill
Facility Address: 2941 County Road 302 
Walnut, MS 38683    
Booneville, 
Permit No.: MSS049301
SIC: 4953
Permit Writer: Rajeev Gupta
EPD Branch: Water II Branch

II.	NATURE OF BUSINESS

This facility is a Municipal Solid Waste (MSW) landfill.  

III.	EFFLUENT AND RECEIVING STREAM FLOW DATA

Outfall No.	Discharge Type	Total Area Drained	Receiving Stream	Current Status	
001	Storm water	110.2 acres	Unnamed Tributary of Hurricane Creek	Constructed	
002	Storm water	70.2 acres	Unnamed Tributary of Hurricane Creek	Constructed	
003	Storm water	38.5 acres	Unnamed Tributary of Big Creek	Constructed	
004	Storm Water	21.5	Unnamed Tributary of Hurricane Creek	Proposed	
005	Storm Water	51.3	Unnamed Tributary of Hurricane Creek	Proposed	

The discharges from Outfall 001, Outfall 002, Outfall 003, Outfall 004, and Outfall 005 consist or will consist of non-contact storm water runoff associated with construction, development, and operation of the landfill, except for working face runoff and leachate.  Storm water which comes into contact with solid waste materials is contained and treated as leachate. 

Hurricane Creek and Big Creek are designated as Fish and Wildlife and are located in the North Independent Streams Basin.  All immediate receiving streams have a 7Q10 flowrate of zero.  

IV.	303(d) and TMDL ISSUES

The receiving streams do not appear on the 2024 State of Mississippi 303(d) List of Impaired Waterbodies. This permit complies with the two (2) following applicable TMDLs:

•	Phase 1 TMDL Biological Impairment due to Organic Enrichment/Low Dissolved Oxygen and Nutrients for Muddy Creek in the North Independent Streams Basin (June 2006; ID# 306062602)
•	Phase 1 TMDL for Fecal Coliform for Muddy Creek in the North Independent Streams Basin (October 2005; ID# 305101902)

V.	TYPE OF WASTEWATER TREATMENT:

Sedimentation basins are used to allow settling of suspended solids prior to discharge of non-contact storm water to the receiving streams.

VI.	EPA APPLICABLE CATEGORICAL GUIDELINES

Not applicable.  

VII.	DATA FROM APPLICATION FORM 2F

Outfall 001

Parameter	Maximum Value	Number of Samples	
Oil and Grease	< 1.4 mg/L	1	
BOD5	 < 12 mg/L	1	
COD	66 mg/L	10	
TSS	118 mg/L	10	
Total Nitrogen	0.692 mg/L	1	
Total Phosphorus	<0.2 mg/L	1	
pH	7.93 SU	10	
Barium	0.086 mg/L	5	
Chromium	0.0043 mg/L	5	
Cobalt	0.0073 mg/L	5	
Lead	0.035 mg/L	5	
Nickel	0.053 mg/L	5	
Zinc	0.017 mg/L	5	

Outfall 002

Parameter	Maximum Value	Number of Samples	
Oil and Grease	1.9 mg/L	1	
BOD	 < 12 mg/L	1	
COD	106 mg/L	10	
TSS	696 mg/L	10	
Total Nitrogen	2.50 mg/L	1	
Total Phosphorus	0.330 mg/L	1	
pH	8.15 SU	10	
Barium	0.055 mg/L	5	
Chromium	0.008 mg/L	5	
Cobalt	0.0075 mg/L	5	
Lead	0.018 mg/L	5	
Nickel	0.033 mg/L	5	
Vanadium	0.0066 mg/L	5	
Zinc	0.017 mg/L	5	

Parameter	Maximum Value	Number of Samples	
Oil and Grease	< 1.4 mg/L	1	
BOD	 < 12 mg/L	1	
COD	99 mg/L	10	
TSS	444 mg/L	10	
Total Nitrogen	0.831 mg/L	1	
Total Phosphorus	0.330 mg/L	1	
pH	8.52 SU	10	
Outfall 003

Outfall 004

Parameter	Maximum Value	Number of Samples	
Oil and Grease	2.0 mg/L	Est.	
BOD	 12 mg/L	Est.	
COD	80 mg/L	Est.	
TSS	60 mg/L	Est.	
Total Nitrogen	2.50 mg/L	Est.	
Total Phosphorus	0.30 mg/L	Est.	
TKN	0.20 mg/L	Est	
pH	8.6 SU	Est.	
Barium	0.086 mg/L	Est.	
Chromium	0.008 mg/L	Est.	
Cobalt	0.0075 mg/L	Est.	
Lead	0.035 mg/L	Est.	
Nickel	0.053 mg/L	Est.	
Vanadium	0.0066 mg/L	Est.	
Zinc	0.017 mg/L	Est.	

Outfall 005

Parameter	Maximum Value	Number of Samples	
Oil and Grease	2.0 mg/L	Est.	
BOD	 12 mg/L	Est.	
COD	80 mg/L	Est.	
TSS	60 mg/L	Est.	
Total Nitrogen	2.50 mg/L	Est.	
Total Phosphorus	0.30 mg/L	Est.	
TKN	0.20 mg/L	Est	
pH	8.6 SU	Est.	
Barium	0.086 mg/L	Est.	
Chromium	0.008 mg/L	Est.	
Cobalt	0.0075 mg/L	Est.	
Lead	0.035 mg/L	Est.	
Nickel	0.053 mg/L	Est.	
Vanadium	0.0066 mg/L	Est.	
Zinc	0.017 mg/L	Est.	

VIII. 	PROPOSED FINAL LIMITATIONS 

Average Permit Limitations

Outfall Nos.	Parameter	Categorical Limitation	Water Quality Limitation	Present Permit Limitation (PPL)	Proposed Permit Limitation	Basis1	
001, 002,  003, 004, and 005	pH	None	6.0 SU (min)	6.0 SU (min)	6.0 SU (min)	MSWQS	
	TSS	None	None	Report (mg/L)	Report (mg/L)	PPL	
	COD	None	None	Report (mg/L) 	Report (mg/L)	PPL	

Maximum Permit Limitations

Outfall Nos.	Parameter	Categorical Limitation	Water Quality Limitation	Present Permit Limitation (PPL)	Proposed Permit Limitation	Basis1	
001, 002,  003, 004, and 005	pH	None	9.0 SU (min)	9.0 SU (min)	9.0 SU (min)	MSWQS	
	TSS	None	None	Report (mg/L)	90 mg/L	SLL	
	COD	None	None	Report (mg/L) 	Report (mg/L)	PPL	

1 Basis: PPL = Present Permit Limitation; MSWQS = Mississippi Water Quality Standard; SLL = Standard Landfill Limitation  

All parameters shall be monitored semi-annually with a grab sample of the effluent.  Results will be reported annually on a Discharge Monitoring Report (DMR).  

As is found in the existing permit, several conditions for storm event sampling records, SWPPP certification form, and SWPPP development, components, controls, implementation, and amendments are being added to the proposed permit. 

Two conditions for proposed Outfalls 004 and 005 are being added.  One condition addresses inspections during construction and the second condition addresses the submittal of a Form 2F Application within one year after the commencement of discharge.  New SWPPP requirements for all landfills are being added to their NPDES Permits as these permits are being reissued.  As a result, one additional special condition of the permit shall be that the permittee shall submit a revised SWPPP within sixty (60) days of permit reissuance.