PERMIT RATIONALE FOR REISSUANCE
Anderson Grove LLC, Anderson Grove Mobile Home Park
Lowndes County
Caledonia,, Mississippi
Water NPDES No. MS0050377
3/24/2026

I.	CLASSIFICATION –Commercial NPDES Minor 

II.	DESCRIPTION OF WASTEWATER – Domestic Wastewater

III.	DESCRIPTION OF WASTEWATER TREATMENT – Wastewater is collected and treated by means of a conventional lagoon.  No increase in flow is proposed within the application.

IV.	RECEIVING WATERS – Unnamed Tributary of Luxapallila.  The receiving water is located within the Tombigbee River Basin, and Luxapallila Creek is classified as Public Water Supply.  Luxapallila Creek does appear on the current State of Mississippi 303(d) list of impaired waterbodies for pH. This permit can be reopened and modified if a completed TMDL requires additional or more stringent monitoring based on the listed impairment.

V.	APPLICABLE GUIDELINES – 11 MS admin code part 6, Commercial Facility Guidelines (Technology)

VI.	SUMMARY OF LIMITATIONS –
Parameter                              Flow                                                                 Basis
Flow                                      0.002 MGD                                                      Design
BOD5                                    30 mg/l (Max Monthly Average)	            Technology
TSS                                       90 mg/l (Max Monthly Average)	            Technology
E. Coli                                  126 Col./100 ml (Max Monthly Average)        WPC-2	
Chlorine, Total Residual      0.1 – 1.0 SU					Technology
pH                                         6.0 – 9.0 SU					WPC-2

E. Coli will now be the bacterial indicator used for all freshwaters in MS designated as Recreation, Fish and Wildlife Support, and /or Public Water supply (replacing the use of fecal coliform).