PRETREATMENT RATIONALE FOR MODIFICATION – FINAL DRAFT

Chambers Clearview Environmental Landfill 
Scott County
Lake, Mississippi  
Water II Branch                                           	     
Agency Interest (AI) No.: 1054  

Permit No.: MSP090465
SIC Code: 4953
October 2017
Permit Engineer: Carter Cress

I.	        FACILITY INFORMATION

A.	Nature of Business: Municipal Solid Waste (MSW) Landfill. 

B.	Process Wastewater Description: Consists of landfill leachate, gas condensate, and wash water from truck washing operations.  

C.	Proposed Flowrate: 	
Outfall No.	POTW Name	Flowrate	
001	Forest POTW	Daily Maximum: 0.050 MGD 	
002	Meridian POTW	Daily Maximum: 0.050 MGD	

D.	Applicable Federal Guidelines: 40 CFR Part 403: General Pretreatment Regulations for Existing and New Sources of Pollution.   

II.	RECEIVING POTW INFORMATION

A.	POTW Names, AI Nos., and Permit Nos.:
POTW Name	AI No.	Permit No.	
Forest POTW	13138	MS0020362	
Meridian POTW	13261	MS0020117	

B.	POTW Treatment Types: 
POTW Name	Treatment Type(s)  	
Forest POTW	Aeration Basin in combination with Activated Sludge process; Hydrographically Controlled Release Waste Stabilization Lagoons	
Meridian POTW	Activated Sludge followed by Chlorine Disinfection; 
Sequencing Batch Reactor (SBR) followed by UV Disinfection and post-aeration	

C.	POTW Design Flowrates: 
POTW Name	Design Flowrate	
Forest POTW	4.9 MGD	
Meridian POTW	13 MGD	

D.	POTW Receiving Streams: 
POTW Name	Receiving Stream(s)    	
Forest POTW	Gordy Branch;
Futchs Creek	
Meridian POTW	Sowashee Creek	

E.	POTW Receiving Streams’ 7Q10 (Q7/10): 
POTW Name	7Q10 ( Q7/10)  	
Forest POTW	0 cfs = 0 MGD  	
Meridian POTW	0.5 cfs = 0.3 MGD  	

OUTFALL 001: FOREST POTW

III.	PERTINENT FLOWRATE AND LOADING DATA

A.	POTW 12-month Average Flowrate (QPOTW): 4.02 MGD.    

POTW Monthly Average flowrate values using 12 months of recently-available DMR data (MGD): 
11/15	12/15	01/16	02/16	03/16	04/16	05/16	06/16	07/16	08/16	09/16	10/16	
5.893	5.442	6.540	5.809	6.915	5.160	2.121	2.124	2.134	2.167	2.026	1.96	

B.	Industrial Facilities Flowrates Data:

Facility 
(Permit No., AI No.)	Permitted Flow 
(Monthly Avg.)	Max. Monthly Avg. 
(Qw)1 	
Chambers Clearview Environmental Landfill
(MSP090465, 1054)  	0.050 MGD2	0.018 MGD2	
Total	0.050 MGD	0.018 MGD  	

1 the maximum Monthly Average value listed on 12 recently-available DMRs (11/15 – 10/16).   

2 Daily Maximum value used since the facility was only monitored for Maximum flowrates.    

C.	Current Maximum Permitted Loads (Xta):
Parameter	Chambers Clearview Environmental Landfill  	Xtat	
Cadmium (Cd)	0.015 lb/day (Quarterly Maximum)	0.015 lb/day	
Chromium (Cr)	--- 	0	
Copper (Cu)	---	0	
Lead (Pb)	0.003 lb/day (Quarterly Average)	0.003 lb/day	
Nickel (Ni)	Report Concentration	0	
Silver (Ag)	---	0	
Zinc (Zn)	0.146 lb/day (Quarterly Maximum)  	0.146 lb/day	
Cyanide (CN)	---	0	

D.	Maximum 30-day Average Discharge Values (Xt) using 12 months of recently-available DMR data (11/15 – 10/16):
Parameter	Chambers Clearview Environmental Landfill  	Xtt	
Cadmium (Cd)	NODI=B1	0	
Chromium (Cr)	---	0	
Copper (Cu)	---	0	
Lead (Pb)	0.00011 lb/day  	0.00011 lb/day	
Nickel (Ni)	0.0284 lb/day*	0.0284 lb/day	
Silver (Ag)	---	0	
Zinc (Zn)	0.016 lb/day  	0.016 lb/day	
Cyanide (CN)	---	0	

1 NODI=B is an EPA indicator code that means “below detect limit/no detect.”  

*This facility has to report its Quarterly Average concentration; therefore, this load value was calculated by using the maximum Quarterly Average concentration value of 0.189 mg/L with reported Daily Maximum flowrate value of 0.018 MGD.  Daily Maximum value used since the facility was only monitored for Maximum flowrates.  

IV.	BACKGROUND/DOMESTIC LOADING CALCULATIONS

Background Loading (BGL), lb/day = 8.34 x BGC (mg/L) x (QPOTW - QINDUSTRIAL) (MGD)

BGC = Background concentration of domestic sewage.  Calculated from actual POTW data as shown in Appendix A.1 or literature values from Appendix V of EPA’s Local Limits Development Guidance (EPA 833-R-04-002A, July 2004) for those pollutants with insufficient data.  

QINDUSTRIAL = QW1 + QW2 + …
where QW is the largest average flowrate from the DMRs over a recent twelve month period.  (Maximum flowrate data may be used when monthly average data is not available.)  NOTE: since no industrial facilities permitted to discharge into the POTW have current limits for metals (other than Cd, Pb, Ni, and Zn), QINDUSTRIAL = 0.  

BGL (Cd) = 8.34*0.008*(4.02 – 0.018) = 		0.27 lb/day
BGL (Cr) = 8.34*0.003*(4.02 – 0) = 			0.10 lb/day
BGL (Cu) = 8.34*0.032*(4.02 – 0) = 			1.07 lb/day
BGL (Pb) = 8.34*0.03*(4.02 – 0.018) = 		1.00 lb/day
BGL (Ni) = 8.34*0.047*(4.02 – 0.018) = 		1.57 lb/day
BGL (Ag) = 8.34*0.0006*(4.02 – 0) = 		0.02 lb/day
BGL (Zn) = 8.34*0.135*(4.02 – 0.018) = 		4.51 lb/day
BGL (CN) = 8.34*0.082*(4.02 – 0) = 		2.75 lb/day

V.	WATER QUALITY ANALYSIS

A.	Instream Wastewater Concentration

IWC, % = [QPOTW / (QPOTW + Q7/10)] x 100 = [4.02/(4.02 + 0)]*100 = 100 %

Since IWC > 1%, both acute and chronic screening are developed.  

B.	Allowable Water Quality Criteria (AWQC) Headworks Loading Calculations

AWQC, lb/day = 8.34 x CCRITICAL (mg/L) x (Q7/10 + QPOTW, MGD) / (1 – RPOTW)

CCRITICAL = Critical Concentration; obtained from State of Mississippi Water Quality Criteria for Intrastate, Interstate, and Coastal Waters: Freshwater Acute and Chronic Values.  Adopted June 28, 2012.  

RPOTW = Removal efficiency, in decimal form, from actual POTW data (Appendix B.1) or from MDEQ-observed data for those pollutants with insufficient data.  
ACUTE SCREENING:  

AWQC (Cd) = 8.34*0.00103*(0 + 4.02)/(1 – 0.63) = 	0.0933 lb/day
AWQC (Cr) = 8.34*0.323*(0 + 4.02)/(1 – 0.650) = 		30.9 lb/day
AWQC (Cu) = 8.34*0.0070*(0 + 4.02)/(1 – 0.791) = 	1.12 lb/day
AWQC (Pb) = 8.34*0.030*(0 + 4.02)/(1 – 0.719) = 		3.58 lb/day
AWQC (Ni) = 8.34*0.260*(0 + 4.02)/(1 – 0.49) = 		17.1 lb/day
AWQC (Ag) = 8.34*0.00098*(0 + 4.02)/(1 – 0.786) = 	0.154 lb/day
AWQC (Zn) = 8.34*0.065*(0 + 4.02)/(1 – 0.839) = 		13.5 lb/day
AWQC (CN) = 8.34*0.0220*(0 + 4.02)/(1 – 0.62) = 	1.94 lb/day

CHRONIC SCREENING:  

AWQC (Cd) = 8.34*0.00015*(0 + 4.02)/(1 – 0.63) = 	0.0136 lb/day
AWQC (Cr) = 8.34*0.042*(0 + 4.02)/(1 – 0.650) = 		4.02 lb/day
AWQC (Cu) = 8.34*0.0050*(0 + 4.02)/(1 – 0.791) = 	0.802 lb/day
AWQC (Pb) = 8.34*0.00118*(0 + 4.02)/(1 – 0.719) = 	0.141 lb/day
AWQC (Ni) = 8.34*0.029*(0 + 4.02)/(1 – 0.49) = 		1.91 lb/day
AWQC (Ag) = 8.34*NA*(0 + 4.02)/(1 – 0.786) = 		NA
AWQC (Zn) = 8.34*0.065*(0 + 4.02)/(1 – 0.839) = 		13.5 lb/day
AWQC (CN) = 8.34*0.0052*(0 + 4.02)/(1 – 0.62) = 	0.459 lb/day

NA = no critical concentration for chronic silver screening is available from either Mississippi or EPA guidelines.  

VI.	POTW INHIBITION ANALYSIS (HEADWORKS INHIBITION, HWI)

HWI, lb/day = 8.34 x QPOTW (MGD) x CINH (mg/L)

CINH = Activated Sludge Inhibition Levels, from EPA Guidance Manual on the Development and Implementation of Local Discharge Limitations Under the Pretreatment Program: Table 3-2 Activated Sludge Inhibition Threshold Levels.  For the silver parameter, the minimum reported inhibition threshold is utilized.  For all other parameters, 1.0 mg/L is used since this value is near the minimum side of the minimum reported range of inhibition threshold levels.  

HWI (Cd) = 8.34*4.02*1.0 = 		33.5 lb/day
	HWI (Cr) = 8.34*4.02*1.0 = 		33.5 lb/day
	HWI (Cu) = 8.34*4.02*1.0 = 		33.5 lb/day
	HWI (Pb) = 8.34*4.02*1.0 = 		33.5 lb/day
	HWI (Ni) = 8.34*4.02*1.0 = 		33.5 lb/day
	HWI (Ag) = 8.34*4.02*0.25 = 	8.38 lb/day
	HWI (Zn) = 8.34*4.02*1.0 = 		33.5 lb/day
	HWI (CN) = 8.34*4.02*1.0 = 	33.5 lb/day
VII.	DEVELOPMENT OF ALLOWABLE CONCENTRATIONS

The remaining industrial wasteload allocation will be used in calculating allowable acute and chronic concentrations using the “Industrial User (IU) Contributory Flow” method as described in EPA’s Local Limits Development Guidance (EPA 833-R-04-002A, July 2004).  

PAI, lb/day = (LC, lb/day – BGL, lb/day) x (QI, MGD / QT, MGD)

CALLOW, mg/L = (PAI, lb/day) / (8.34 x QI, MGD)

PAI 	=	Permit allocation for indirect discharger
CALLOW=	Allowable concentration for indirect discharger
QI	=	Applicant’s permitted process discharge 
QT	=	Total industrial contributory flow for pertinent pollutants
LC	=	Limiting case loading
BGL	=	Background/domestic loading

QT (MGD) Table

Facility	Cd	Cr	Cu	Pb	Ni 	Ag	Zn	CN	
Chambers Clearview Environmental Landfill 	0.050	---	---	0.050	0.050	---	0.050	---	
Total	0.050	0	0	0.050	0.050	0	0.050	0	

ACUTE:

PAI (Cd) = (0.0933 – 0.27)*(0.050/0.050) = 		ND lb/day
CALLOW (Cd) = ND/(8.34*0.050) = 			ND mg/L

PAI (Pb) = (3.58 – 1.00)*(0.050/0.050) = 		2.58 lb/day
CALLOW (Pb) = 2.58/(8.34*0.050) = 			6.19 mg/L

PAI (Ni) = (17.1 – 1.57)*(0.050/0.050) = 		15.53 lb/day
CALLOW (Ni) = 15.53/(8.34*0.050) = 			37.24 mg/L
	
PAI (Zn) = (13.5 – 4.51)*(0.050/0.050) = 		8.99 lb/day
CALLOW (Zn) = 8.99/(8.34*0.050) = 			21.56 mg/L

CHRONIC:  

PAI (Cd) = (0.0136 – 0.27)*(0.050/0.050) = 		ND lb/day
CALLOW (Cd) = ND/(8.34*0.050) = 			ND mg/L

PAI (Pb) = (0.141 – 1.00)*(0.050/0.050) = 		ND lb/day
CALLOW (Pb) = ND/(8.34*0.050) = 			ND mg/L

PAI (Ni) = (1.91 – 1.57)*(0.050/0.050) = 		0.34 lb/day
CALLOW (Ni) = 0.34/(8.34*0.050) = 			0.82 mg/L

PAI (Zn) = (13.5 – 4.51)*(0.050/0.050) = 		8.99 lb/day
CALLOW (Zn) = 8.99/(8.34*0.050) =	 		21.56 mg/L

ND = no determinable data available.  

OUTFALL 002: MERIDIAN POTW

VIII.	  PERTINENT FLOWRATE AND LOADING DATA

E.	POTW 12-month Average Flowrate (QPOTW): 7.40 MGD.      

POTW Monthly Average flowrate values using 12 months of recently-available DMR data (MGD): 
11/15	12/15	01/16	02/16	03/16	04/16	05/16	06/16	07/16	08/16	09/16	10/16	
8.35	8.46	7.85	8.18	9.48	9.05	5.84	5.68	5.61	5.48	NODI=C1	NODI=C	

1 NODI=C is an EPA indicator code that means “no discharge.”  

F.	Industrial Facilities Flowrates Data:

Facility 
(Permit No., AI No.)	Permitted Flow 
(Monthly Avg.)	Max. Monthly Avg. 
(Qw)1 	
Chambers Clearview Environmental Landfill  
(MSP090465, 1054)  	0.050 MGD2	0.018 MGD2	
Waste Management of Mississippi Inc, Pine Ridge Sanitary Landfill and Recycling Center
(MSP090562, 2372)  	0.050 MGD2	NODI=C3	
Kemper County Landfill Company LLC, a subsidiary of Waste Pro of Mississippi Inc
(MSP091085, 3522)  	0.028 MGD2	0.011999 MGD2	
Total	0.128 MGD	0.029999 MGD  	

1 the maximum Monthly Average value listed on 12 recently-available DMRs (11/15 – 10/16); Daily Maximum value used since the facility is only monitored for Daily Maximum flowrate for Outfall 001.  

2 Daily Maximum value used since the facility was only monitored for Maximum flowrates.  

3 NODI=C is an EPA indicator code that means “no discharge.”  

G.	Current Maximum Permitted Loads (Xta):
Parameter	Chambers Clearview Environmental Landfill   	Waste Management of Mississippi Inc, Pine Ridge Sanitary Landfill and Recycling Center	Kemper County Landfill Company LLC, a subsidiary of Waste Pro of Mississippi Inc  	Xtat	
Cd	0.015 lb/day (Quarterly Maximum)	Report Concentration	0.0502 lb/day (Monthly Maximum)  	0.0652 lb/day	
Cr	--- 	---	---	0	
Cu	---	0.05 mg/L Concentration	9.75 lb/day (Monthly Maximum)  	9.75 lb/day	
Pb	0.003 lb/day (Quarterly Average)	0.116 mg/L Concentration  	0.95 lb/day (Monthly Maximum)  	0.953 lb/day	
Ni	Report Concentration	Report Concentration  	---	0	
Ag	---	0.024 mg/L Concentration	1.25 lb/day (Monthly Maximum)  	1.25 lb/day	
Zn	0.146 lb/day (Quarterly Maximum)  	Report Concentration  	---	0.146 lb/day	
CN	---	---	---	0	

Maximum 30-day Average Discharge Values (Xt) using 12 months of recently-available DMR data (11/15 – 10/16):
Parameter	Chambers Clearview Environmental Landfill  	Waste Management of Mississippi Inc, Pine Ridge Sanitary Landfill and Recycling Center	Kemper County Landfill Company LLC, a subsidiary of Waste Pro of Mississippi Inc  	Xtat	
Cd	NODI=B1	NODI=C2	0.0001 lb/day  	0.0001 lb/day	
Cr	--- 	---	---	0	
Cu	---	NODI=C	0.0114 lb/day	0.0114 lb/day	
Pb	0.00011 lb/day	NODI=C  	0.0005 lb/day	0.00061 lb/day	
Ni	0.0284 lb/day*  	NODI=C	---	0.0284 lb/day	
Ag	---	NODI=C	0.0174 lb/day  	0.0174 lb/day	
Zn	0.016 lb/day    	NODI=C	---	0.016 lb/day	
CN	---	---	---	0	

1 NODI=B is an EPA indicator code that means “below detect limit/no detect.”  

2 NODI=C is an EPA indicator code that means “no discharge.”  

*This facility has to report its Quarterly Average concentration; therefore, this load value was calculated by using the maximum Quarterly Average concentration value of 0.189 mg/L with reported Daily Maximum flowrate value of 0.018 MGD.  Daily Maximum flowrate value used since the facility is only monitored for Daily Maximum flowrate for Outfall 001.    

IX.	BACKGROUND/DOMESTIC LOADING CALCULATIONS

Background Loading (BGL), lb/day = 8.34 x BGC (mg/L) x (QPOTW - QINDUSTRIAL) (MGD)

BGC = Background concentration of domestic sewage.  Calculated from actual POTW data as shown in Appendix A.2 or literature values from Appendix V of EPA’s Local Limits Development Guidance (EPA 833-R-04-002A, July 2004) for those pollutants with insufficient data.  

QINDUSTRIAL = QW1 + QW2 + …
where QW is the largest average flowrate from the DMRs over a recent twelve month period.  (Maximum flowrate data may be used when monthly average data is not available.)  NOTE: since no industrial facilities permitted to discharge into the POTW have current limits for metals (other than Cd, Cu, Pb, Ni, Ag, and Zn), QINDUSTRIAL = 0.  

BGL (Cd) = 8.34*0.000198*(7.40 – 0.029999) = 	0.0122 lb/day
BGL (Cr) = 8.34*0.00228*(7.40 – 0) = 		0.141 lb/day
BGL (Cu) = 8.34*0.0183*(7.40 – 0.011999) = 	1.13 lb/day
BGL (Pb) = 8.34*0.00328*(7.40 – 0.029999) = 	0.202 lb/day
BGL (Ni) = 8.34*0.00236*(7.40 – 0.018) = 		0.145 lb/day
BGL (Ag) = 8.34*0.000350*(7.40 – 0.011999) = 	0.0216 lb/day
BGL (Zn) = 8.34*0.0828*(7.40 – 0.018) = 		5.10 lb/day
BGL (CN) = 8.34*0.082*(7.40 – 0) = 		5.06 lb/day

X.	WATER QUALITY ANALYSIS

C.	Instream Wastewater Concentration

IWC, % = [QPOTW / (QPOTW + Q7/10)] x 100 = [7.40/(7.40 + 0.3)]*100 = 96 %

Since IWC > 1%, both acute and chronic screening are developed.  

D.	Allowable Water Quality Criteria (AWQC) Headworks Loading Calculations

AWQC, lb/day = 8.34 x CCRITICAL (mg/L) x (Q7/10 + QPOTW, MGD) / (1 – RPOTW)

CCRITICAL = Critical Concentration; obtained from State of Mississippi Water Quality Criteria for Intrastate, Interstate, and Coastal Waters: Freshwater Acute and Chronic Values.  Adopted June 28, 2012.  

RPOTW = Removal efficiency, in decimal form, from actual POTW data (Appendix B.2) or from MDEQ-observed data for those pollutants with insufficient data.  

ACUTE SCREENING:  

AWQC (Cd) = 8.34*0.00103*(7.40 + 0.3)/(1 – 0.685) = 	0.210 lb/day
AWQC (Cr) = 8.34*0.323*(7.40 + 0.3)/(1 – 0.593) = 	51.0 lb/day
AWQC (Cu) = 8.34*0.0070*(7.40 + 0.3)/(1 – 0.708) = 	1.54 lb/day
AWQC (Pb) = 8.34*0.030*(7.40 + 0.3)/(1 – 0.893) = 	18.0 lb/day
AWQC (Ni) = 8.34*0.260*(7.40 + 0.3)/(1 – 0.211) = 	21.2 lb/day
AWQC (Ag) = 8.34*0.00098*(7.40 + 0.3)/(1 – 0.806) = 	0.324 lb/day
AWQC (Zn) = 8.34*0.065*(7.40 + 0.3)/(1 – 0.598) = 	10.4 lb/day
AWQC (CN) = 8.34*0.0220*(7.40 + 0.3)/(1 – 0.62) = 	3.72 lb/day

CHRONIC SCREENING:  

AWQC (Cd) = 8.34*0.00015*(7.40 + 0.3)/(1 – 0.685) = 	0.0306 lb/day
AWQC (Cr) = 8.34*0.042*(7.40 + 0.3)/(1 – 0.593) = 	6.63 lb/day
AWQC (Cu) = 8.34*0.0050*(7.40 + 0.3)/(1 – 0.708) = 	1.10 lb/day
AWQC (Pb) = 8.34*0.00118*(7.40 + 0.3)/(1 – 0.893) = 	0.708 lb/day
AWQC (Ni) = 8.34*0.029*(7.40 + 0.3)/(1 – 0.211) = 	2.36 lb/day
AWQC (Ag) = 8.34*NA*(7.40 + 0.3)/(1 – 0.806) = 		NA
AWQC (Zn) = 8.34*0.065*(7.40 + 0.3)/(1 – 0.598) = 	10.4 lb/day
AWQC (CN) = 8.34*0.0052*(7.40 + 0.3)/(1 – 0.62) = 	0.879 lb/day

NA = no critical concentration for chronic silver screening is available from either Mississippi or EPA guidelines.  

XI.	POTW INHIBITION ANALYSIS (HEADWORKS INHIBITION, HWI)

HWI, lb/day = 8.34 x QPOTW (MGD) x CINH (mg/L)

CINH = Activated Sludge Inhibition Levels, from EPA Guidance Manual on the Development and Implementation of Local Discharge Limitations Under the Pretreatment Program: Table 3-2 Activated Sludge Inhibition Threshold Levels.  For the silver parameter, the minimum reported inhibition threshold is utilized.  For all other parameters, 1.0 mg/L is used since this value is near the minimum side of the minimum reported range of inhibition threshold levels.  

HWI (Cd) = 8.34*7.40*1.0 = 		61.7 lb/day
	HWI (Cr) = 8.34*7.40*1.0 = 		61.7 lb/day
	HWI (Cu) = 8.34*7.40*1.0 = 		61.7 lb/day
	HWI (Pb) = 8.34*7.40*1.0 = 		61.7 lb/day
	HWI (Ni) = 8.34*7.40*1.0 = 		61.7 lb/day
	HWI (Ag) = 8.34*7.40*0.25 = 	15.4 lb/day
	HWI (Zn) = 8.34*7.40*1.0 = 		61.7 lb/day
	HWI (CN) = 8.34*7.40*1.0 = 	61.7 lb/day

XII.	DEVELOPMENT OF ALLOWABLE CONCENTRATIONS

The remaining industrial wasteload allocation will be used in calculating allowable acute and chronic concentrations using the “Industrial User (IU) Contributory Flow” method as described in EPA’s Local Limits Development Guidance (EPA 833-R-04-002A, July 2004).  

PAI, lb/day = (LC, lb/day – BGL, lb/day) x (QI, MGD / QT, MGD)

CALLOW, mg/L = (PAI, lb/day) / (8.34 x QI, MGD)

PAI 	=	Permit allocation for indirect discharger
CALLOW=	Allowable concentration for indirect discharger
QI	=	Applicant’s permitted process discharge 
QT	=	Total industrial contributory flow for pertinent pollutants
LC	=	Limiting case loading
BGL	=	Background/domestic loading

QT (MGD) Table

Facility	Cd	Cr	Cu	Pb	Ni 	Ag	Zn	CN	
Chambers Clearview Environmental Landfill  	0.050	---	---	0.050	0.050	---	0.050	---	
Waste Management of Mississippi Inc, Pine Ridge Sanitary Landfill and Recycling Center	0.050	---	0.050	0.050	0.050	0.050	0.050	---	
Kemper County Landfill Company LLC, a subsidiary of Waste Pro of Mississippi Inc  	0.028	---	0.028	0.028	---	0.028	---	---	
Total	0.128	0	0.078	0.128	0.100	0.078	0.100	0	

ACUTE:

PAI (Cd) = (0.210 – 0.0122)*(0.050/0.128) = 	0.0773 lb/day
CALLOW (Cd) = 0.0773/(8.34*0.050) = 		0.185 mg/L

PAI (Pb) = (18.0 – 0.202)*(0.050/0.128) = 		6.95 lb/day
CALLOW (Pb) = 6.95/(8.34*0.050) = 			16.7 mg/L

PAI (Ni) = (21.2 – 0.145)*(0.050/0.100) = 		10.5 lb/day
CALLOW (Ni) = 10.5/(8.34*0.050) = 			25.2 mg/L
	
PAI (Zn) = (10.4 – 5.09)*(0.050/0.100) = 		2.66 lb/day
CALLOW (Zn) = 2.66/(8.34*0.050) = 			6.38 mg/L

CHRONIC:  

PAI (Cd) = (0.0306 – 0.0122)*(0.050/0.128) = 	0.00719 lb/day
CALLOW (Cd) = 0.00719/(8.34*0.050) = 		0.0172 mg/L

PAI (Pb) = (0.708 – 0.202)*(0.050/0.128) = 		0.198 lb/day
CALLOW (Pb) = 0.198/(8.34*0.050) = 			0.475 mg/L

PAI (Ni) = (2.36 – 0.145)*(0.050/0.100) = 		1.11 lb/day
CALLOW (Ni) = 1.11/(8.34*0.050) = 			2.66 mg/L

PAI (Zn) = (10.4 – 5.09)*(0.050/0.100) = 		2.66 lb/day
CALLOW (Zn) = 2.66/(8.34*0.050) =	 		6.38 mg/L

XIII.	  LIMITING CASE (LC) SUMMARY TABLE – OUTFALL 001: FOREST POTW

Parameter	HWI (lb/day)	Acute AWQC (lb/day)	Chronic AWQC (lb/day)	Acute POTW LC1
(lb/day)	Chronic
POTW
LC1
(lb/day)	Acute
LC* (lb/day)	Chronic
LC** (lb/day)	BGL (lb/day)	Xtat (lb/day)	Xtt (lb/day)	BGL < LC (Pass/Fail)	Xtat < LC (Pass/Fail)	Xtt < LC (Pass/Fail)	
Cd	33.5	0.0933	0.0136	---	---	0.0933	0.0136	0.27	0.015	0	FAIL	FAIL	PASS	
Cr	33.5	30.9	4.02	---	---	30.9	4.02	0.10	0	0	PASS	PASS	PASS	
Cu	33.5	1.12	0.802	8.66	5.61	1.12	0.802	1.07	0	0	FAIL	PASS	PASS	
Pb	33.5	3.58	0.141	---	---	3.58	0.141	1.00	0.003	0.00011	FAIL	PASS	PASS	
Ni	33.5	17.1	1.91	---	---	17.1	1.91	1.57	0	0.0284	PASS	PASS	PASS	
Ag	8.38	0.154	NA	---	---	0.154	NA	0.02	0	0	PASS	PASS	PASS	
Zn	33.5	13.5	13.5	---	---	13.5	13.5	4.51	0.146	0.016	PASS	PASS	PASS	
CN	33.5	1.94	0.459	1.94	0.459	1.94	0.459	2.75	0	0	FAIL	PASS	PASS	

*This value is the lowest value from the HWI, Acute AWQC, and Acute POTW LC columns.

**This value is the lowest value from the HWI, Chronic AWQC, and Chronic POTW LC columns.   

1 If the POTW has a limit for a specific parameter, industrial loading is limited to the amount the POTW can accept and still meet the limit.  The POTW has permit limits for copper and cyanide.  POTW LC (lb/day) = (8.34 x CPOTW (mg/L) x QPOTW (MGD)) / (1 – RPOTW), where CPOTW is the POTW concentration limit in mg/L.  

Cu:	Maximum:	POTW LC = (8.34*0.054*4.02)/(1 – 0.791 = 	8.66 lb/day	
	Average:	POTW LC = (8.34*0.035*4.02)/(1 – 0.791) = 	5.61 lb/day

CN:	Maximum:	POTW LC = (8.34*0.022*4.02)/(1 – 0.62) = 	1.94 lb/day
	Average:	POTW LC = (8.34*0.0052*4.02)/(1 – 0.62) = 	0.459 lb/day

NA = no critical concentration for chronic silver screening is available from either Mississippi or EPA guidelines.  

LIMITING CASE (LC) SUMMARY TABLE – OUTFALL 002: MERIDIAN POTW    

Parameter	HWI (lb/day)	Acute AWQC (lb/day)	Chronic AWQC (lb/day)	Acute POTW LC1
(lb/day)	Chronic
POTW
LC1
(lb/day)	Acute
LC* (lb/day)	Chronic
LC** (lb/day)	BGL (lb/day)	Xtat (lb/day)	Xtt (lb/day)	BGL < LC (Pass/Fail)	Xtat < LC (Pass/Fail)	Xtt < LC (Pass/Fail)	
Cd	61.7	0.210	0.0306	---	---	0.210	0.0306	0.0122	0.0652	0.0001	PASS	FAIL	PASS	
Cr	61.7	51.0	6.63	---	---	51.0	6.63	0.141	0	0	PASS	PASS	PASS	
Cu	61.7	1.54	1.10	1.52	1.10	1.52	1.10	1.13	9.75	0.0114	FAIL	FAIL	PASS	
Pb	61.7	18.0	0.708	---	---	18.0	0.708	0.202	0.953	0.00061	PASS	FAIL	PASS	
Ni	61.7	21.2	2.36	---	---	21.2	2.36	0.145	0	0.0284	PASS	PASS	PASS	
Ag	15.4	0.324	NA	---	---	0.324	NA	0.0216	1.25	0.0174	PASS	FAIL	PASS	
Zn	61.7	10.4	10.4	---	---	10.4	10.4	5.10	0.146	0.016	PASS	PASS	PASS	
CN	61.7	3.72	0.879	---	---	3.72	0.879	5.06	0	0	FAIL	PASS	PASS	

*This value is the lowest value from the HWI, Acute AWQC, and Acute POTW LC columns.

**This value is the lowest value from the HWI, Chronic AWQC, and Chronic POTW LC columns.   

1 If the POTW has a limit for a specific parameter, industrial loading is limited to the amount the POTW can accept and still meet the limit.  The POTW has permit limits for copper.  POTW LC (lb/day) = (8.34 x CPOTW (mg/L) x QPOTW (MGD)) / (1 – RPOTW), where CPOTW is the POTW concentration limit in mg/L.  

Cu:	Maximum:	POTW LC = (8.34*0.0072*7.40)/(1 – 0.708) = 	1.52 lb/day	
	Average:	POTW LC = (8.34*0.0052*7.40)/(1 – 0.708) = 	1.10 lb/day

NA = no critical concentration for chronic silver screening is available from either Mississippi or EPA guidelines. 

XIV.	  PROPOSED PERMIT LIMITATIONS – OUTFALL 001: FOREST POTW  
Parameter	
Allowable Loads and Concentrations	
Current Permit Loads and Concentrations 	
Proposed Permit Limits	Sampling Frequency 	Sample Type	Basis of Decision1	
	Acute
(lb/day)
(mg/L)	Chronic
(lb/day)
(mg/L)	Max.
(lb/day)
(mg/L)	Avg.
(lb/day)
(mg/L)	Max (lb/day)	Avg. (lb/day)	Max. (mg/L)	Avg. 
(mg/L)	Reporting Frequency			
Cadmium (Cd)	ND
ND	ND
ND	0.015
Report	0.006
Report	0.015	0.006	Report	Report	Monthly	Grab	CPL	
									Quarterly			
Lead (Pb)	2.58
6.19	ND
ND	Report
Report	0.003 
Report	Report	0.003	Report	Report	Monthly	Grab	CPL	
									Quarterly			
Nickel (Ni)	15.53
37.24	0.34
0.82	---
Report	---
Report	---	---	Report	Report	Monthly	Grab	CPL	
									Quarterly			
Zinc (Zn)	8.99
21.56	8.99
21.56	0.146
Report	0.058
Report	0.146	0.058	Report	Report	Monthly	Grab	CPL	
									Quarterly 			
Ammonia 	---
---	---
---	---
2000	---
700	---	---	2000	700	Twice/Month	Grab	CPL	
									Quarterly			
Total Suspended Solids	---
---	---
---	---
1400	---
933	---	---	1400	933	Monthly	Grab	CPL	
									Quarterly 			
Oil and Grease	---
---	---
---	---
100	---
100	---	---	100	100	Monthly	Grab	CPL	
									Quarterly 			
BOD5	---
---	---
---	---
3300	---
2200	---	---	3300	2200	Twice/Month	Grab	CPL	
									Quarterly 			
Bis (2-ethylhexyl) phthalate 	---
---	---
---	---
Report	---
Report	---	---	Report	Report	Monthly	Grab	CPL  	
									Quarterly 			

Parameter	Current Permit Limits	Proposed Permit Limits	Sampling Frequency	Reporting Frequency	Sample Type	Basis of Decision1	
pH	5.0 – 9.0 S.U.	5.0 – 9.0 S.U.	Weekly 	Quarterly 	Grab	CPL	

Parameter	Current Permit Limits	Proposed Permit Limits	Sampling Frequency	Reporting Frequency	Sample Type	Basis of Decision1	
Flow	0.050 MGD Daily Max.	0.050 MGD Daily Max.  	Daily	Quarterly  	Batch  	CPL	

1 Basis of Decision: CPL = Current Permit Limit.  

PROPOSED PERMIT LIMITATIONS – OUTFALL 002: MERIDIAN POTW  
Parameter	
Allowable Loads and Concentrations	
Current Permit Loads and Concentrations 	
Proposed Permit Limits	Sampling Frequency 	Sample Type	Basis of Decision1	
	Acute
(lb/day)
(mg/L)	Chronic
(lb/day)
(mg/L)	Max.
(lb/day)
(mg/L)	Avg.
(lb/day)
(mg/L)	Max (lb/day)	Avg. (lb/day)	Max. (mg/L)	Avg. 
(mg/L)	Reporting Frequency			
Cadmium (Cd)	0.0773
0.185	0.00719
0.0172	---
---	---
---	0.015	0.006	0.185	0.0172	Monthly	Grab	BJ	
									Quarterly			
Lead (Pb)	6.95
16.7	0.198
0.475	---
---	--- 
---	Report	0.003	Report	0.475	Monthly	Grab	BJ	
									Quarterly			
Nickel (Ni)	10.5
25.2	1.11
2.66	---
---	---
---	---	---	Report	Report	Monthly	Grab	BJ	
									Quarterly			
Zinc (Zn)	2.66
6.38	2.66
6.38	---
---	---
---	0.146	0.058	Report	Report	Monthly	Grab	BJ	
									Quarterly 			
Ammonia 	---
---	---
---	---
---	---
---	---	---	2000	700	Twice/Month	Grab	BJ	
									Quarterly			
Total Suspended Solids	---
---	---
---	---
---	---
---	---	---	1400	933	Monthly	Grab	BJ	
									Quarterly 			
Oil and Grease	---
---	---
---	---
---	---
---	---	---	100	100	Monthly	Grab	BJ	
									Quarterly 			
BOD5	---
---	---
---	---
---	---
---	---	---	3300	2200	Twice/Month	Grab	BJ	
									Quarterly 			
Bis (2-ethylhexyl) phthalate 	---
---	---
---	---
---	---
---	---	---	Report	Report	Monthly	Grab	BJ  	
									Quarterly 			

Parameter	Current Permit Limits	Proposed Permit Limits	Sampling Frequency	Reporting Frequency	Sample Type	Basis of Decision1	
pH	---	5.0 – 9.0 S.U.	Weekly 	Quarterly 	Grab	BJ	

Parameter	Current Permit Limits	Proposed Permit Limits	Sampling Frequency	Reporting Frequency	Sample Type	Basis of Decision1	
Flow	---	0.050 MGD Daily Max.  	Daily	Quarterly  	Batch  	BJ	

1 Basis of Decision: BJ = Best Judgment.  
XV.	STATEMENT OF BASIS (narrative)

This facility has requested a modification of its pretreatment permit; it wishes to alter the currently-permitted list of POTWs that can receive its process wastewater.  The wastewater consists primarily of landfill leachate and is stored in tanks on-site; then, it is periodically hauled to an approved POTW via truck.  

In the currently-active permit, two (2) POTWs are authorized: Forest POTW and Bay Springs POTW.  In the proposed permit, two (2) POTWs will once again be authorized to be destinations for the wastewater.  These are: Outfall 001 (Forest POTW) and Outfall 002 (Meridian POTW).  

The proposed permit limits for Outfall 001 (Forest POTW) will remain the same as the current permit’s limits for Forest POTW.  The proposed limits for Outfall 002 (Meridian POTW) were generally derived from the currently-permitted limits for Forest POTW; however, some unique limits (such as for concentration limits for cadmium) were inserted after evaluating the calculated Allowable Limitations.  

Bay Springs POTW will no longer be an authorized destination for the facility’s wastewater.   

The Meridian POTW was mailed a copy of the 1st draft modification permit.  An authorized representative sent a written communication indicating no objections to the proposed permit.  A copy of this e-mail communication is in the file.  

In the permit application, the facility had requested that an additional POTW be designated as an authorized discharge point for its process wastewater.  This POTW was the Jackson POTW located on Savanna Street (NPDES No. MS0024295).  However, the interim Public Works Director for the city of Jackson requested adjustments to the proposed permit limits that were proposed by MDEQ in the 1st draft modification permit.  In addition, other stringent conditions were required by the interim Public Works Director in order to allow the facility to use this POTW.  After discussions with the facility, the facility has agreed to remove consideration of the Jackson POTW located on Savanna Street as a potential discharge point.   

Since this permitting action is a modification that is not “pertaining to the expansion of the facility,” no public hearing will be required.   

APPENDIX A.1

OUTFALL 001: FOREST POTW

BACKGROUND CONCENTRATION OF DOMESTIC SEWAGE*

Cadmium (Cd):		BGC = 	0.008 mg/L**
Chromium (Cr):		BGC =	0.003 mg/L
Copper (Cu):		BGC =	0.032 mg/L
Lead (Pb):			BGC = 	0.003 mg/L
Nickel (Ni):			BGC = 	0.047 mg/L**
Silver (Ag):			BGC =	0.0006 mg/L
Zinc (Zn):			BGC = 	0.135 mg/L
Cyanide (CN)		BGC =	0.082 mg/L**

*These values were obtained from the 8 tables that follow in the subsequent pages.  BGC was calculated by summing the domestic concentrations of the individual samples and dividing this amount by the number of these samples.  

**This value was obtained from Appendix V of EPA’s Local Limits Development Guidance (EPA 833-R-04-002A, July 2004) due to insufficient data from the POTW.  

	July 2008	August 2008	September 2008	October 2008	November 2008	December 2008	
Forest POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

2.6
No data
No data	

2.961
No data
No data	

5.497
No data
No data	

2.359
No data
No data	

5.000
No data
No data	

6.721
No data
No data	
Chambers Clearview Environmental Landfill   

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
No data
No data	

0.013
No data
No data	

NODI=C
No data
No data	

0.0131
No data
No data	

NODI=C
No data
No data	

No data
No data
No data	
DOMESTIC FLOW, MGD:	2.587	2.948	5.497	2.3459	5.000	6.721	
DOMESTIC LOAD, lb/day:	No data	No data	No data	No data	No data	No data	
DOMESTIC CONC., mg/L:	No data	No data	No data	No data	No data	No data	
DATA FOR CADMIUM (Cd) BACKGROUND/DOMESTIC CONCENTRATION

Average Domestic Concentration for Cadmium (Cd) = BGC = No data; used value of 0.008 mg/L from Appendix V of EPA’s Local Limits Development Guidance (EPA 833-R-04-002A, July 2004).   

*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

	July 2008	August 2008	September 2008	October 2008	November 2008	December 2008	
Forest POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

2.6
0.002
0.04	

2.961
No data
No data	

5.497
No data
No data	

2.359
0.0025
0.05	

5.000
0.003
0.1	

6.721
0.003
0.2	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
No data
No data	

0.013
No data
No data	

NODI=C
No data
No data	

0.0131
No data
No data	

NODI=C
No data
No data	

No data
No data
No data	
DOMESTIC FLOW, MGD:	2.587	2.948	5.497	2.3459	5.000	6.721	
DOMESTIC LOAD, lb/day:	0.04	No data	No data	0.05	0.1	0.2	
DOMESTIC CONC., mg/L:	0.002	No data	No data	0.003	0.003	0.003	
DATA FOR CHROMIUM (Cr) BACKGROUND/DOMESTIC CONCENTRATION

Average Domestic Concentration for Chromium (Cr) = BGC = 0.003 mg/L  

*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

	July 2008	August 2008	September 2008	October 2008	November 2008	December 2008	
Forest POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

2.6
0.0315
0.68	

2.961
0.039
0.96	

5.497
0.032
1.5	

2.359
0.0225
0.44	

5.000
0.0385
1.6	

6.721
0.027
1.5	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
No data
No data	

0.013
No data
No data	

NODI=C
No data
No data	

0.0131
No data
No data	

NODI=C
No data
No data	

No data
No data
No data	
DOMESTIC FLOW, MGD:	2.587	2.948	5.497	2.3459	5.000	6.721	
DOMESTIC LOAD, lb/day:	0.68	0.96	1.5	0.44	1.6	1.5	
DOMESTIC CONC., mg/L:	0.032	0.039	0.032	0.022	0.0385	0.027	
DATA FOR COPPER (Cu) BACKGROUND/DOMESTIC CONCENTRATION

Average Domestic Concentration for Copper (Cu) = BGC = 0.032 mg/L   

*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

	July 2008	August 2008	September 2008	October 2008	November 2008	December 2008	
Forest POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

2.6
0.0045
0.098	

2.961
0.004
0.1	

5.497
0.002
0.1	

2.359
0.003
0.06	

5.000
0.001
0.04	

6.721
0.002
0.1	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
No data
No data	

0.013
No data
No data	

NODI=C
No data
No data	

0.0131
No data
No data	

NODI=C
No data
No data	

No data
No data
No data	
DOMESTIC FLOW, MGD:	2.587	2.948	5.497	2.3459	5.000	6.721	
DOMESTIC LOAD, lb/day:	0.098	0.1	0.1	0.06	0.04	0.1	
DOMESTIC CONC., mg/L:	0.0045	0.004	0.002	0.003	0.001	0.002	
DATA FOR LEAD (Pb) BACKGROUND/DOMESTIC CONCENTRATION

Average Domestic Concentration for Lead (Pb) = BGC = 0.003 mg/L 

*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

	July 2008	August 2008	September 2008	October 2008	November 2008	December 2008	
Forest POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

2.6
No data
No data	

2.961
No data
No data	

5.497
No data
No data	

2.359
No data
No data	

5.000
No data
No data	

6.721
No data
No data	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
No data
No data	

0.013
No data
No data	

NODI=C
No data
No data	

0.0131
No data
No data	

NODI=C
No data
No data	

No data
No data
No data	
DOMESTIC FLOW, MGD:	2.587	2.948	5.497	2.3459	5.000	6.721	
DOMESTIC LOAD, lb/day:	No data	No data	No data	No data	No data	No data	
DOMESTIC CONC., mg/L:	No data	No data	No data	No data	No data	No data	
DATA FOR NICKEL (Ni) BACKGROUND/DOMESTIC CONCENTRATION

Average Domestic Concentration for Nickel (Ni) = BGC = No data; used value of 0.047 mg/L from Appendix V of EPA’s Local Limits Development Guidance (EPA 833-R-04-002A, July 2004).   

*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

	July 2008	August 2008	September 2008	October 2008	November 2008	December 2008	
Forest POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

2.6
0.000375
0.0081	

2.961
0.0011
0.027	

5.497
0.0004
0.02	

2.359
0.0007
0.01	

5.000
0.0006
0.03	

6.721
No data
No data	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
No data
No data	

0.013
No data
No data	

NODI=C
No data
No data	

0.0131
No data
No data	

NODI=C
No data
No data	

No data
No data
No data	
DOMESTIC FLOW, MGD:	2.587	2.948	5.497	2.3459	5.000	6.721	
DOMESTIC LOAD, lb/day:	0.0081	0.027	0.02	0.01	0.03	No data	
DOMESTIC CONC., mg/L:	0.00038	0.0011	0.0004	0.0005	0.0006	No data	
DATA FOR SILVER (Ag) BACKGROUND/DOMESTIC CONCENTRATION

Average Domestic Concentration for Silver (Ag) = BGC = 0.0006 mg/L   

*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

	July 2008	August 2008	September 2008	October 2008	November 2008	December 2008	
Forest POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

2.6
0.1035
2.2	

2.961
0.1345
3.32	

5.497
0.1345
6.16	

2.359
0.166
3.27	

5.000
0.146
6.09	

6.721
0.130
7.29	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
0.00191
0.00021	

0.013
0.00191
0.00021	

NODI=C
None
None	

0.0131
No data
No data	

NODI=C
No data
No data	

No data
No data
No data	
DOMESTIC FLOW, MGD:	2.587	2.948	5.497	2.3459	5.000	6.721	
DOMESTIC LOAD, lb/day:	2.2	3.32	6.16	3.27	6.09	7.29	
DOMESTIC CONC., mg/L:	0.10	0.135	0.134	0.167	0.146	0.130	
DATA FOR ZINC (Zn) BACKGROUND/DOMESTIC CONCENTRATION

Average Domestic Concentration for Zinc (Zn) = BGC = 0.135 mg/L 

*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

	July 2008	August 2008	September 2008	October 2008	November 2008	December 2008	
Forest POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

2.6
NODI=B
NODI=B	

2.961
NODI=B
NODI=B	

5.497
NODI=B
NODI=B	

2.359
NODI=B
NODI=B	

5.000
NODI=B
NODI=B	

6.721
NODI=B
NODI=B	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
No data
No data	

0.013
No data
No data	

NODI=C
No data
No data	

0.0131
No data
No data	

NODI=C
No data
No data	

No data
No data
No data	
DOMESTIC FLOW, MGD:	2.587	2.948	5.497	2.3459	5.000	6.721	
DOMESTIC LOAD, lb/day:	No data	No data	No data	No data	No data	No data	
DOMESTIC CONC., mg/L:	No data	No data	No data	No data	No data	No data	
DATA FOR CYANIDE (CN) BACKGROUND/DOMESTIC CONCENTRATION

Average Domestic Concentration for Cyanide (CN) = BGC = No data; used value of 0.082 mg/L from Appendix V of EPA’s Local Limits Development Guidance (EPA 833-R-04-002A, July 2004).   

*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

APPENDIX A.2

OUTFALL 003: MERIDIAN POTW  

BACKGROUND CONCENTRATION OF DOMESTIC SEWAGE*

Cadmium (Cd):		BGC = 	0.000198 mg/L
Chromium (Cr):		BGC = 	0.00228 mg/L
Copper (Cu):		BGC = 	0.0183 mg/L
Lead (Pb):			BGC = 	0.00328 mg/L
Nickel (Ni):			BGC = 	0.00236 mg/L
Silver (Ag):			BGC = 	0.000350 mg/L
Zinc (Zn):			BGC = 	0.0828 mg/L
Cyanide (CN):		BGC = 	0.082 mg/L**

*These values were obtained from the 8 tables that follow in the subsequent pages.  BGC was calculated by summing the domestic concentrations of the individual samples and then dividing this amount by the number of these samples.  

**This value was obtained from Appendix V of EPA’s Local Limits Development Guidance (EPA 833-R-04-002A, July 2004) due to insufficient data from the POTW.  

	July 2014	August 2014	September 2014	October 2014	November 2014	December 2014	January 2015	
Meridian POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

5.4
No data
No data	

5.56
0.000106
0.00491	

5.68
No data
No data	

4.98
0.000501
0.0208	

4.37
0.000116
0.00423	

NODI=C
0.000103
No data	

7.44
0.000161
0.00999	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
NODI=B
NODI=B	

0.013
NODI=B
NODI=B	

0.013
NODI=B
NODI=B	

0.012
NODI=B
NODI=B	

0.012
NODI=B
NODI=B	

0.012
NODI=B
NODI=B	

0.012
NODI=B
NODI=B	
Waste Management of Mississippi Inc, Pine Ridge Sanitary Landfill and Recycling Center

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	
Kemper County Landfill Company LLC, a subsidiary of Waste Pro of Mississippi Inc  

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.006019
NODI=B
NODI=B	

0.006019
NODI=B
NODI=B	

0.006019
NODI=B
NODI=B	

0.006019
NODI=B
NODI=B	

0.006014
NODI=B
NODI=B	

0.006019
NODI=B
NODI=B	

0.006019
NODI=B
NODI=B	
DOMESTIC FLOW, MGD:	5.38	5.54	5.66	4.96	4.35	No data	7.42	
DOMESTIC LOAD, lb/day:	No data	0.00491	No data	0.0208	0.00423	No data	0.00999	
DOMESTIC CONC., mg/L:	No data	0.000106	No data	0.000503	0.000117	0.000103	0.000161	
DATA FOR CADMIUM (Cd) BACKGROUND/DOMESTIC CONCENTRATION
Average Domestic Concentration for Cadmium (Cd) = BGC = 0.000198 mg/L 
*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

	July 2014	August 2014	September 2014	October 2014	November 2014	December 2014	January 2015	
Meridian POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

5.4
0.00257
0.116	

5.56
0.00216
0.100	

5.68
0.00193
0.0914	

4.98
0.00202
0.0839	

4.37
0.001765
0.0643	

NODI=C
0.00201
No data	

7.44
0.00348
0.216	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
No data
No data	

0.013
No data
No data	

0.013
No data
No data	

0.012
No data
No data	

0.012
No data
No data	

0.012
No data
No data	

0.012
No data
No data	
Waste Management of Mississippi Inc, Pine Ridge Sanitary Landfill and Recycling Center

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

NODI=C
No data
No data	

NODI=C
No data
No data	

NODI=C
No data
No data	

NODI=C
No data
No data	

NODI=C
No data
No data	

NODI=C
No data
No data	

NODI=C
No data
No data	
Kemper County Landfill Company LLC, a subsidiary of Waste Pro of Mississippi Inc  

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.006019
No data
No data	

0.006019
No data
No data	

0.006019
No data
No data	

0.006019
No data
No data	

0.006014
No data
No data	

0.006019
No data
No data	

0.006019
No data
No data	
DOMESTIC FLOW, MGD:	5.4	5.56	5.68	4.98	4.37	No data	7.44	
DOMESTIC LOAD, lb/day:	0.116	0.100	0.0914	0.0839	0.0643	No data	0.216	
DOMESTIC CONC., mg/L:	0.00257	0.00216	0.00193	0.00202	0.001765	0.00201	0.00348	
DATA FOR CHROMIUM (Cr) BACKGROUND/DOMESTIC CONCENTRATION
Average Domestic Concentration for Chromium (Cr) = BGC = 0.00228 mg/L 
*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

	July 2014	August 2014	September 2014	October 2014	November 2014	December 2014	January 2015	
Meridian POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

5.4
0.0212
0.955	

5.56
0.0187
0.867	

5.68
0.01785
0.845	

4.98
0.0126
0.523	

4.37
0.0166
0.605	

NODI=C
0.01655
No data	

7.44
0.0246
1.53	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
No data
No data	

0.013
No data
No data	

0.013
No data
No data	

0.012
No data
No data	

0.012
No data
No data	

0.012
No data
No data	

0.012
No data
No data	
Waste Management of Mississippi Inc, Pine Ridge Sanitary Landfill and Recycling Center

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	
Kemper County Landfill Company LLC, a subsidiary of Waste Pro of Mississippi Inc  

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.006019
0.0375
0.0018	

0.006019
0.01975
0.001	

0.006019
0.027
0.0014	

0.006019
0.02
0.001	

0.006014
NODI=B
NODI=B	

0.006019
NODI=B
NODI=B	

0.006019
0.3225
0.0015	
DOMESTIC FLOW, MGD:	5.39	5.55	5.67	4.97	4.36	No data	7.43	
DOMESTIC LOAD, lb/day:	0.9532	0.866	0.8436	0.522	0.605	No data	1.5285	
DOMESTIC CONC., mg/L:	0.0212	0.0187	0.0178	0.0126	0.0166	0.01655	0.0247	
DATA FOR COPPER (Cu) BACKGROUND/DOMESTIC CONCENTRATION
Average Domestic Concentration for Copper (Cu) = BGC = 0.0183 mg/L 
*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

	July 2014	August 2014	September 2014	October 2014	November 2014	December 2014	January 2015	
Meridian POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

5.4
0.00740
0.333	

5.56
0.00312
0.145	

5.68
0.002395
0.113	

4.98
0.000843
0.0350	

4.37
0.00189
0.0689	

NODI=C
0.00203
No data	

7.44
0.00403
0.250	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
0.015
0.00015	

0.013
0.015
0.00015	

0.013
0.015
0.00015	

0.012
0.0107
0.0008	

0.012
0.0107
0.0008	

0.012
0.0107
0.0008	

0.012
0.007
0.00007  	
Waste Management of Mississippi Inc, Pine Ridge Sanitary Landfill and Recycling Center

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	
Kemper County Landfill Company LLC, a subsidiary of Waste Pro of Mississippi Inc  

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.006019
0.00245
0.0001	

0.006019
0.00175
0.0001	

0.006019
0.0081
0.0004	

0.006019
0.00158
0.0001	

0.006014
NODI=B
NODI=B	

0.006019
NODI=B
NODI=B	

0.006019
NODI=B
NODI=B	
DOMESTIC FLOW, MGD:	5.38	5.54	5.66	4.96	4.35	No data	7.42	
DOMESTIC LOAD, lb/day:	0.333	0.145	0.112	0.0341	0.0681	No data	0.250	
DOMESTIC CONC., mg/L:	0.00742	0.00314	0.00237	0.000825	0.00188	No data	0.00404	
DATA FOR LEAD (Pb) BACKGROUND/DOMESTIC CONCENTRATION
Average Domestic Concentration for Lead (Pb) = BGC = 0.00328 mg/L 
*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

	July 2014	August 2014	September 2014	October 2014	November 2014	December 2014	January 2015	
Meridian POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

5.4
0.00282
0.127	

5.56
0.00230
0.107	

5.68
0.00217
0.103	

4.98
0.00347
0.144	

4.37
0.00219
0.0798	

NODI=C
0.002505
No data	

7.44
0.00339
0.210	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
0.142
0.015	

0.013
0.142
0.015	

0.013
0.142
0.015	

0.012
0.191
0.019	

0.012
0.191
0.019	

0.012
0.191
0.019	

0.012
0.156
0.016	
Waste Management of Mississippi Inc, Pine Ridge Sanitary Landfill and Recycling Center

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	
Kemper County Landfill Company LLC, a subsidiary of Waste Pro of Mississippi Inc  

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.006019
No data
No data	

0.006019
No data
No data	

0.006019
No data
No data	

0.006019
No data
No data	

0.006014
No data
No data	

0.006019
No data
No data	

0.006019
No data
No data	
DOMESTIC FLOW, MGD:	5.387	5.547	5.667	4.968	4.358	No data	7.428	
DOMESTIC LOAD, lb/day:	0.112	0.092	0.088	0.125	0.0608	No data	0.194	
DOMESTIC CONC., mg/L:	0.00249	0.00199	0.00186	0.00302	0.00167	No data	0.00313	
DATA FOR NICKEL (Ni) BACKGROUND/DOMESTIC CONCENTRATION
Average Domestic Concentration for Nickel (Ni) = BGC = 0.00236 mg/L 
*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

	July 2014	August 2014	September 2014	October 2014	November 2014	December 2014	January 2015	
Meridian POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

5.4
0.000353
0.0159	

5.56
0.000304
0.0141	

5.68
0.0002425
0.0115	

4.98
0.0001495
0.00621	

4.37
0.000174
0.00634	

NODI=C
0.000233
No data	

7.44
0.000874
0.0542	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
No data
No data	

0.013
No data
No data	

0.013
No data
No data	

0.012
No data
No data	

0.012
No data
No data	

0.012
No data
No data	

0.012
No data
No data	
Waste Management of Mississippi Inc, Pine Ridge Sanitary Landfill and Recycling Center

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	
Kemper County Landfill Company LLC, a subsidiary of Waste Pro of Mississippi Inc  

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.006019
NODI=B
NODI=B	

0.006019
NODI=B
NODI=B	

0.006019
NODI=B
NODI=B	

0.006019
NODI=B
NODI=B	

0.006014
NODI=B
NODI=B	

0.006019
NODI=B
NODI=B	

0.006019
NODI=B
NODI=B	
DOMESTIC FLOW, MGD:	5.39	5.55	5.67	4.97	4.36	No data	7.43	
DOMESTIC LOAD, lb/day:	0.0159	0.0141	0.0115	0.00621	0.00634	No data	0.0542	
DOMESTIC CONC., mg/L:	0.000354	0.000305	0.000243	0.000150	0.000174	No data	0.000875	
DATA FOR SILVER (Ag) BACKGROUND/DOMESTIC CONCENTRATION
Average Domestic Concentration for Silver (Ag) = BGC = 0.000350 mg/L 
*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

	July 2014	August 2014	September 2014	October 2014	November 2014	December 2014	January 2015	
Meridian POTW  

Flow*, MGD:
Conc., mg/L:
Load, lb/day:	

5.4
0.111
5.00	

5.56
0.08015
3.72	

5.68
0.0698
3.31	

4.98
0.06775
2.81	

4.37
0.07185
2.62	

NODI=C
0.0707
No data	

7.44
0.0949
5.89	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.013
0.193
0.00192	

0.013
0.193
0.00192	

0.013
0.193
0.00192	

0.012
0.2
0.00145	

0.012
0.2
0.00145	

0.012
0.2
0.00145	

0.012
0.157
0.00161	
Waste Management of Mississippi Inc, Pine Ridge Sanitary Landfill and Recycling Center

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	

NODI=C
NODI=C
NODI=C	
Kemper County Landfill Company LLC, a subsidiary of Waste Pro of Mississippi Inc  

Flow, MGD:
Conc.*, mg/L:
Load*, lb/day:	

0.006019
No data
No data	

0.006019
No data
No data	

0.006019
No data
No data	

0.006019
No data
No data	

0.006014
No data
No data	

0.006019
No data
No data	

0.006019
No data
No data	
DOMESTIC FLOW, MGD:	5.387	5.547	5.667	4.968	4.358	No data	7.428	
DOMESTIC LOAD, lb/day:	5.00	3.72	3.31	2.81	2.62	No data	5.89	
DOMESTIC CONC., mg/L:	0.111	0.0804	0.0701	0.0678	0.0721	No data	0.0951	
DATA FOR ZINC (Zn) BACKGROUND/DOMESTIC CONCENTRATION
Average Domestic Concentration for Zinc (Zn) = BGC = 0.0828 mg/L 
*These values are the Averages listed on the DMRs.  Average values are preferred over Maximum values because they present a more representative model of the facility’s typical effluent.  

	July 2014	August 2014	September 2014	October 2014	November 2014	December 2014	January 2015	
Meridian POTW  

Flow, MGD:
Conc., mg/L:
Load, lb/day:	

5.4
No data
No data	

5.56
No data
No data	

5.68
No data
No data	

4.98
No data
No data	

4.37
No data
No data	

NODI=C
No data
No data	

7.44
No data
No data	
Chambers Clearview Environmental Landfill

Flow, MGD:
Conc., mg/L:
Load, lb/day:	

0.013
No data
No data	

0.013
No data
No data	

0.013
No data
No data	

0.012
No data
No data	

0.012
No data
No data	

0.012
No data
No data	

0.012
No data
No data	
Waste Management of Mississippi Inc, Pine Ridge Sanitary Landfill and Recycling Center

Flow, MGD:
Conc., mg/L:
Load, lb/day:	

NODI=C
No data
No data	

NODI=C
No data
No data	

NODI=C
No data
No data	

NODI=C
No data
No data	

NODI=C
No data
No data	

NODI=C
No data
No data	

NODI=C
No data
No data	
Kemper County Landfill Company LLC, a subsidiary of Waste Pro of Mississippi Inc  

Flow, MGD:
Conc., mg/L:
Load, lb/day:	

0.006019
No data
No data	

0.006019
No data
No data	

0.006019
No data
No data	

0.006019
No data
No data	

0.006014
No data
No data	

0.006019
No data
No data	

0.006019
No data
No data	
DOMESTIC FLOW, MGD:	5.4	5.56	5.68	4.98	4.37	No data	7.44	
DOMESTIC LOAD, lb/day:	No data	No data	No data	No data	No data	No data	No data	
DOMESTIC CONC., mg/L:	No data	No data	No data	No data	No data	No data	No data	
DATA FOR CYANIDE (CN) BACKGROUND/DOMESTIC CONCENTRATION
Average Domestic Concentration for Cyanide (CN) = BGC = No data; used value of 0.082 mg/L from Appendix V of EPA’s Local Limits Development Guidance (EPA 833-R-04-002A, July 2004).    

APPENDIX B.1

OUTFALL 001 – FOREST POTW  

REMOVAL EFFICIENCIES

(Calculated and displayed in table on the next page)

1 Removal Efficiency = [(<inf.> - <eff.>)/<inf.>]*100, where <inf.> is the average influent value and <eff.> is the average effluent value.

Yellow Shaded Values were excluded because either the inf. > eff. or inf. = eff. for the same sample date.  

Blue Values were used in “non-detect” results in which the Detection Limit was then divided by 2 to obtain the blue value.  

*Due to inadequate data from the actual POTW, MDEQ study data for Activated Sludge systems was used.  

[mg/L]	

7/18/08	

7/22/08	

8/15/08	

8/18/08	

9/18/08	

9/23/08	

10/7/08	

10/31/08	

11/18/08

11/20/08	

12/9/08	

12/23/08	
Removal Efficiency1	
Cd
Inf.	0.00025	0.00025	0.00025	0.00025	0.00025	0.00025	0.00025	0.00025	0.00025	0.00025	0.00025	0.00025	

63 %*	
Cd
Eff.	0.00025	0.00025	0.00025	0.00025	0.00025	0.00025	0.00025	0.00025	0.00025	0.00025	0.00025	0.00025		
Cr
Inf.	0.002	0.001	0.001	0.001	0.007	0.001	0.003	0.002	0.003	0.001	0.003	0.005	

65.0 %
	
Cr
Eff.	0.001	0.001	0.001	0.001	0.001	0.001	0.001	0.001	0.001	0.004	0.002	0.005		
Cu
Inf.	0.042	0.021	0.029	0.049	0.039	0.025	0.030	0.015	0.047	0.030	0.026	0.028	

79.1 %	
Cu
Eff.	0.021	0.0025	0.0025	0.0025	0.006	0.009	0.009	0.0025	0.008	0.006	0.0025	0.008		
Pb
Inf.	0.005	0.004	0.001	0.007	0.002	0.002	0.004	0.002	0.001	0.002	0.002	0.002	

71.9 %	
Pb
Eff.	0.004	0.0005	0.0005	0.0005	0.0005	0.0005	0.0005	0.0005	0.0005	0.003	0.0005	0.0005		
Ni
Inf.	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	

49 %*	
Ni
Eff.	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01		
Ag
Inf.	0.00015	0.0007	0.00015	0.0011	0.0004	0.00015	0.0005	0.0009	0.0006	0.00015	0.00015	0.00015	

78.6 %	
Ag
Eff.	0.00015	0.00015	0.00015	0.00015	0.00015	0.00015	0.00015	0.00015	0.00015	0.00015	0.00015	0.00015		
Zn
Inf.	0.070	0.137	0.127	0.142	0.140	0.129	0.155	0.177	0.155	0.137	0.108	0.152	

83.9 %	
Zn
Eff.	0.0125	0.0125	0.0125	0.0125	0.0125	0.0125	0.0125	0.047	0.0125	0.0125	0.038	0.065		
CN
Inf.	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005	

62 %*	
CN
Eff.	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005		

APPENDIX B.2

OUTFALL 003 – MERIDIAN POTW  

REMOVAL EFFICIENCIES

(Calculated and displayed in table on the next page)

1 Removal Efficiency = [(<inf.> - <eff.>)/<inf.>]*100, where <inf.> is the average influent value and <eff.> is the average effluent value.

Yellow Shaded Values were excluded because either the inf. > eff. or inf. = eff. for the same sample date.  

Blue Values were used in “non-detect” results in which the Method Quantitation Limit was then divided by 2 to obtain the blue value.  

*Due to inadequate data from the actual POTW, MDEQ study data for Activated Sludge systems was used.  

[mg/L]	

7/28/14	

8/11/14	

8/18/14	

9/8/14	

9/15/14	

10/6/14	

10/13/14	

11/3/14	

11/10/14

12/1/14	

12/8/14	

1/12/15	
Removal Efficiency1	
Cd
Inf.	0.00005	0.000106	0.00005	0.00005	0.00005	0.000305	0.000696	0.00005	0.000116	0.000103	0.00005	0.000161	

68.5 %	
Cd
Eff.	0.00005	0.00005	0.00005	0.00005	0.00005	0.000115	0.000153	0.00005	0.00005	0.00005	0.00005	0.00005		
Cr
Inf.	0.00257	0.00267	0.00165	0.00222	0.00164	0.00172	0.00232	0.00145	0.00208	0.00256	0.00146	0.00348	

59.3 %
	
Cr
Eff.	0.00143	0.001112	0.0005	0.00164	0.0005	0.0005	0.0005	0.0005	0.0005	0.0005	0.00110	0.00172		
Cu
Inf.	0.0212	0.0197	0.0177	0.0166	0.0191	0.0128	0.0124	0.0144	0.0188	0.0188	0.0143	0.0246	

70.8 %	
Cu
Eff.	0.00557	0.00561	0.00493	0.00499	0.00464	0.00561	0.00758	0.00364	0.00353	0.00466	0.00679	0.00392		
Pb
Inf.	0.00740	0.00395	0.00229	0.00253	0.00226	0.000834	0.000852	0.00127	0.00251	0.00252	0.00154	0.00403	

89.3 %	
Pb
Eff.	0.000250	0.000250	0.000250	0.000250	0.000250	0.000250	0.000250	0.000250	0.000250	0.000250	0.000673	0.000250		
Ni
Inf.	0.00282	0.00343	0.00289	0.00294	0.00305	0.00168	0.00347	0.00205	0.00233	0.00270	0.00231	0.00339	

21.1 %	
Ni
Eff.	0.00261	0.00224	0.00236	0.00241	0.00193	0.00188	0.00313	0.00198	0.00163	0.00197	0.00229	0.00220		
Ag
Inf.	0.000353	0.000397	0.000211	0.000292	0.000193	0.000115	0.000184	0.000132	0.000216	0.000198	0.000268	0.000874	

80.6 %	
Ag
Eff.	0.00005	0.00005	0.00005	0.00005	0.00005	0.00005	0.00005	0.00005	0.00005	0.00005	0.000116	0.00005		
Zn
Inf.	0.111	0.0840	0.0763	0.0666	0.0730	0.0750	0.0605	0.0571	0.0866	0.0840	0.0574	0.0949	

59.8 %	
Zn
Eff.	0.0286	0.0206	0.0310	0.0313	0.0298	0.0310	0.0303	0.0270	0.0251	0.0619	0.0341	0.0215		
CN
Inf.	0.005	0.005	No data	0.0025	0.0025	0.0025	0.0025	0.0025	0.0025	0.0025	0.005	0.005	

62 %*	
CN
Eff.	0.005	0.005	No data	0.008	0.0025	0.0025	0.0025	0.0025	0.0025	0.0025	0.005	0.005		

ADEQUACY OF TREATMENT

Date:					October 2017    
Project Manager:			Carter Cress
Proposed Site:			Chambers Clearview Environmental Landfill Inc 
					Pretreatment Permit No. MSP090465  
					Scott County  
Address:				2253 Mudline Road
					Lake, MS  39092    

Proposed Hydraulic Loading:	0.032000 MGD (long-term avg.; from permit application)
Proposed Organic Loading:	1087 mg/L (long-term avg..; from permit application); 
1087 mg/L *8.34*0.032000 MGD = 
290.1 lb/day (avg.) 

Meridian POTW, NPDES Permit# MS0020117, AI# 13261
Permitted Flow:	13 MGD avg.
12 Months Flow:	9.48 MGD maximum avg. value (DMR data from January 2016 through December 2016)
12 Months BOD5: 	5,566 lb/day maximum monthly avg. influent (DMR data from January 2016 through December 2016)

Evaluation of Flow
13 MGD permitted – 9.48 MGD actual = 3.52 MGD available vs. 0.032000 MGD proposed

Evaluation of BOD5
Permitted flow 13,000,000 gpd/(100 gallons/person/day) = 130,000 population equivalency
130,000*0.17 lb BOD/person/day = 22,100 lb/day BOD capacity
22,100 lb/day available – 5,566 lb/day (avg. POTW influent) = 16,534 lb/day
16,534 lb/day available vs. 290.1 lb/day proposed