PERMIT RATIONALE FOR REISSUANCE
Ergon Refining Inc
Warren County
Vicksburg, Mississippi
Water NPDES No. MS0034711
June 2024

I.	FACILITY INFORMATION

Facility Name:     Ergon Refining Inc (ERI)
Facility Address: 2125 Haining Road 
                                        Vicksburg, MS  39183    
Vicksburg, 
Permit No.:         MS0034711
SIC:                     2911
Permit Writer:     Samar Patel
EPD Branch:      Chemical Branch

II.	NATURE OF BUSINESS

This industrial point source produces finished oil products from naphthenic heavy crude oil. Primary finished products include naphthenic lubrication oil and asphalt. Minor products of the refinery include naphtha, diesel, and sodium hydrosulfide. The applicable SIC Code is 2911. 

III.	EFFLUENT AND RECEIVING STREAM FLOW DATA

The refinery currently has fifteen (15) outfalls that include one process wastewater outfall (001) and thirteen storm water outfalls. The discharge from each outfall is described below.

A.	Outfall 001 (MS0034711 001) – The treated wastewater includes process wastewater, tank drawdown water, barge cleaning water, slab wash down, boiler blowdown, heat exchanger wash, laboratory waste water, truck wash rack waste water, hydrostatic test water (intermittent) and storm water from process areas. 

The long-term average (LTA) flow and daily maximum flow as reported in the application are 0.2808 MGD and 0.5127 MGD. 

B.	Outfall 002 (MS0034711 002) – Storm water runoff from roadways that pass through the existing process areas and hydrostatic test water (intermittent).

C.	Outfall 003 (MS0034711 003) – Storm water runoff from roadways that pass through the existing process areas and hydrostatic test water (intermittent).

D.	Outfall 004 (MS0034711 004) – Storm water runoff from the tank farm area that stores primarily the polymerized asphalt and hydrostatic test water (intermittent).

E.	Outfall 005 (MS0034711 005) - Storm water runoff from the tank farm area that maintains storage tanks for various crude oil feedstocks and hydrostatic test water (intermittent).

F.	Outfall 006 (MS0034711 006) – Storm water runoff from the tank farm area that maintains several asphalt storage tanks and hydrostatic test water (intermittent).

G.	Outfall 007 (MS0034711 007) - Storm water runoff from the tank farm area that maintains storage tanks for asphalt, crude oil, lube oil, and naphtha and hydrostatic test water (intermittent).

H.	Outfall 009 (MS0034711 009) – Storm water runoff from a tank farm associated with the PDA, area outside the curbed area formerly included in Outfall 008 and hydrostatic test water (intermittent).

I.	Outfall 010 (MS0034711 010) – Storm water runoff from outside of the curbed process areas associated with the Propane De-Asphalting Unit (PDA) and hydrostatic test water (intermittent).

J.	Outfall 011 (MS0034711 011) – Storm water runoff from the storage areas on the north portion of the PDA and hydrostatic test water (intermittent).

K.	Outfall 012 (MS0034711 012) – Storm water collected along roadways and traffic areas at the ERI’s Asphalt Emulsion Terminal and hydrostatic test water.

L.	Outfall 013 (MS0034711 013) – Storm water collected along the rail loading rack and various paved roadways at the ERI Asphalt Emulsion Terminal and hydrostatic test water (intermittent).

M.	Outfall 014 (MS0034711 014) – Storm water collected from tank farms located at the ERI Asphalt Emulsion Terminal and hydrostatic test water (intermittent).

N.	Outfall 015 (MS0034711 015) – Storm water collected from tank farm areas located at the ERI Asphalt Emulsion Terminal and hydrostatic test water (intermittent).

O.	Outfall 017 (MS0034711 017) – Storm Water collected from a 6.13-acre site near the firewater system. 

	RECEIVING WATERS

All outfalls (except outfalls 012-015): Yazoo River Diversion Canal ( 7Q10 = 815.65 MGD (1262 cfs))

The storm water outfalls 012-015 are currently permitted to discharge into Vicksburg Harbor and will continue to discharge to the same stream under the proposed NPDES permit. 

IV.	303(d)  AND TOTAL DAILY MAXIMUM LOAD (TMDL) ISSUES

The receiving streams (Yazoo Canal & Vicksburg Harbor) at the point of discharge are not listed on the Mississippi 2022 & 2024 §303(d) List of Impaired Water Bodies. These streams are located in the Yazoo River drainage basin and are classified as Fish and Wildlife at the discharge location. Please note that we have a reopener clause in the proposed permit which allows the permit to be reopened and modified in case more stringent limitations and additional monitoring are determined to be necessary based on the completed TMDL or water quality study of the receiving stream. 

Yazoo River Diversion Canal: The 7Q10 of the receiving stream is 1262 cfs (815.65 MGD); this along with the facility’s calculated maximum 30-day average flow of 0.40 MGD results in an Instream Waste Concentration (IWC) of 0.049%. The receiving stream is in the Yazoo River Basin, and is classified as fish and wildlife. The section of the receiving stream segment where Outfall 001 discharges into the Yazoo River Diversion Canal, does not appear on the updated State of Mississippi 303(d) List of Impaired Water bodies. However, this site is listed in a State of Mississippi Yazoo River Basin TMDL for Total Nitrogen (TN) and Total Phosphorous (TP) for selected Large Rivers in the Delta, which was completed in June of 2008. No flow or nutrient loading increases have been proposed in this draft permit.  This draft permit proposes effluent limitations for TN and TP consistent with that TMDL and the corresponding waste load allocation found in Section VIII of this draft permit rationale. 

V.	TYPE OF WASTEWATER TREATMENT:

A.	Outfall 001 (MS0034711 001) – The process wastewater and contaminated storm water runoff from the process areas is treated using various techniques such as  neutralization, oil/water separation, stabilization pond, induced air floatation, trickling filtration, aeration lagoon, activated sludge, settling basin, and/or reuse/recycle of effluent.

B.	Outfall 002-007 (MS0034711 002-007) – None.

C.	Outfall 009-011 (MS0034711 009-011) – None.

D.	Outfall 012-015 (MS0034711 012-015) – None.

E.	Outfall 017 (MS0034711 017) – None.

VI.	EPA APPLICABLE CATEGORICAL GUIDELINES
 
	40 CFR 419 (Petroleum Refining Point Source Category), Subpart D (Lube Oil
Subcategory). 

Note: The August 12, 1985 guidelines establish Best Available Technology Economically Achievable (BAT) and Best Conventional Pollution Control Technology (BCT) as equal to Best Practicable Technology (BPT) for all parameters except phenols and chromium.  Phenols and chromium are regulated by whichever guideline is more stringent.

VII.	DATA FROM APPLICATION FORM 2C AND FORM 2F

A.	Outfall 001 (MS0034711 001)

Parameter	Maximum Daily Value
lb/day (mg/l)	No. of 
Analyses	
BOD5	64.60 (18.75)	24	
COD	790.88 (220.67)	24	
TSS	40.03 (11.25)	24	
TOC	157 mg/l	1	
NH3-N	96.95 (28.21)	24	
Oil & Grease	13.6 mg/l	24	
Sulfide	< 0.8	24	
Hex. Chromium	ND	24	
Total Aluminum	<1.0 mg/l	1	
Total Chromium	0.007 mg/l	24	
Total Phenols	0.233 mg/l	24	
Total Copper	<0.005 mg/l	1	
Total Mercury	0.000001 mg/l	1	
Total Arsenic	0.053 mg/l	1	
Total Nickel	0.0055 mg/l		
Total Zinc	0.184 mg/l	1	
Total Lead	<0.005 mg/l	1	
Total Selenium	0.023 mg/l	1	
Temperature (Summer)	34.2 ºC	122	
Temperature (Winter)	28.4 ºC	124	
pH (S.U.)	7.28 (min) –
7.50 (max)	24	

B.	Outfall 002 (MS0034711 002): 

Parameter	Maximum 	# of Analyses	
Oil & Grease	5.84 mg/l	13	
TOC	2.23 mg/l	13	
pH	8.12 S.U.	13	

C.	Outfall 003 (MS0034711 003): 
Parameter	Maximum 	# of Analyses	
Oil & Grease	4.41 mg/l	16	
TOC	3.53 mg/l	16	
pH	8.37 S.U.	16	

D.	Outfall 004 (MS0034711 004): 

Parameter	Maximum 	# of Analyses	
Oil & Grease	3.14 mg/l	37	
TOC	4.9 mg/l	37	
pH	7.73 S.U.	37	

E.	Outfall 005 (MS0034711 005): 

Parameter	Maximum 	# of Analyses	
Oil & Grease	2.31 mg/l	45	
TOC	4.46 mg/l	45	
pH	8.16 S.U.	45	

F.	Outfall 006 (MS0034711 006): 

Parameter	Maximum 	# of Analyses	
Oil & Grease	2.47 mg/l	45	
TOC	3.26 mg/l	45	
pH	8.37 S.U.	45	

G.	Outfall 007 (MS0034711 007): 

Parameter	Maximum 	# of Analyses	
Oil & Grease	1.79 mg/l	41	
TOC	3.66 mg/l	41	
pH	8.37 S.U.	41	

H.	Outfall 009 (MS0034711 009): 

Parameter	Maximum 	# of Analyses	
Oil & Grease	1.44 mg/l	34	
TOC	3.30 mg/l	34	
pH	8.13 S.U.	34	

I.	Outfall 010 (MS0034711 010): 

Parameter	Maximum 	# of Analyses	
Oil & Grease	1.45 mg/l	34	
TOC	2.51mg/l	34	
pH	8.14 S.U.	34	

J.	Outfall 011 (MS0034711 011): 

Parameter	Maximum 	# of Analyses	
Oil & Grease	1.38 mg/l	22	
TOC	1.88 mg/l	22	
pH	8.58 S.U.	22	

K.	Outfall 012 (MS0034711 012): 

Parameter	Maximum 	# of Analyses	
Oil & Grease	1.51 mg/l	20	
TOC	4.95 mg/l	20	
pH	8.29 S.U.	20	

L.	Outfall 013 (MS0034711 013): 

Parameter	Maximum 	# of Analyses	
Oil & Grease	1.72 mg/l	35	
TOC	5.39 mg/l	35	
pH	8.33 S.U.	35	

M.	Outfall 014 (MS0034711 014): 

Parameter	Maximum 	# of Analyses	
Oil & Grease	2.13 mg/l	24	
TOC	4.04 mg/l	24	
pH	8.55 S.U.	24	

N.	Outfall 015 (MS0034711 015): 

Parameter	Maximum 	# of Analyses	
Oil & Grease	0.76 mg/l	24	
TOC	4.27 mg/l	24	
pH	8.59 S.U.	24	

O.	      Outfall 015 (MS0034711 017): 

Parameter	Maximum 	# of Analyses	
Oil & Grease	1.02 mg/l	2	
TOC	Non-Detect	2	
pH	7.51 S.U.	2	

VIII. 	WATER QUALITY LIMITATIONS BASED ON WASTELOAD ALLOCATION (WLA)

Outfall	Parameter	WLA Limitation	
MS0034711-001	Minimum DO	6.0 mg/l	
	TN	262.00	
	TP	1.4	

IX.	CATEGORICAL GUIDELINE LIMITATIONS CALCULATIONS

See attachment I

X.	TOXICITY SCREENING

See Attachment II.

XI.	XI.	PROPOSED FINAL LIMITATIONS 

1.	Average Permit Limitations, lb/day 
Outfall	Parameter	Categorical Limitation	Water Quality Limitation	Present Permit Limitation	Proposed Permit Limitation	Basis	
MS0034711-001	-Flow (MGD)

-BOD5
-TSS 
-NH3-N
-COD
-Oil & Grease
-Phenolic
  Compounds
-Sulfide
-Hex. Chromium
-Recoverable
 Chromium, Total
- pH (Min.)
- DO, mg/l (Min.)
- Nitrogen, Total    (TN)
-Phosphorous,       Total (TP)	-

438.78 
383.02
164.57
3162.96
143.53
2.519

2.295
0.264
2.985

6.0 (S.U)
-
-

-	-

-
-
-
-
-
-

-
-
-

6.0 (S.U.)
6.0
262.0

1.40	Report

438.78 
383.02
164.57
3162.96
143.53
2.519

2.295
0.264
2.985

6.0 (S.U.)
6.0
Report

Report	Report

438.78 
383.02
164.57
3162.96
143.53
2.519

2.295
0.264
2.985

6.0 (S.U.)
6.0
262.0 

1.40	Engineering Judgment
Categorical
Categorical
Categorical
Categorical
Categorical
Categorical

Categorical
Categorical
Categorical

MSWQS
WLA
WLA

WLA	
MS0034711-002	-TOC
-Oil & Grease
-pH (Min.)	Report
Report
-	-
-
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711-003	-TOC 
-Oil & Grease
-pH (Min.)	Report
Report
-	-
-
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711- 004	-TOC
-Oil & Grease
-pH (Min.)	Report
Report
-	-
-
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711-005	-TOC
-Oil & Grease
-pH (Min.)	Report
Report
-	-
-
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Categorical
Categorical
MSWQS	

MS0034711-006	-TOC
-Oil & Grease
-pH (Min.)	Report
Report
-	-
-
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Categorical
Categorical
MSWQS	

MS0034711-007	-TOC
-Oil & Grease
-pH (Min.)	Report
Report
-	-
-
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Categorical
Categorical
MSWQS	

MS0034711-009	-TOC
-Oil & Grease
-pH (Min.)	Report
Report
-	-
-
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Categorical
Categorical
MSWQS	

MS0034711-010	-TOC
-Oil & Grease
-pH (Min.)	Report
Report
-	-
-
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Categorical
Categorical
MSWQS	

MS0034711-011	-TOC
-Oil & Grease
-pH (Min.)	Report
Report
-	-
-
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Categorical
Categorical
MSWQS	

MS0034711-012	-TOC
-Oil & Grease
-pH (Min.)	Report
Report
-	-
-
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Categorical
Categorical
MSWQS	

MS0034711-013	-TOC
-Oil & Grease
-pH (Min.)	Report
Report
-	-
-
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Categorical
Categorical
MSWQS	

MS0034711-014	-TOC
-Oil & Grease
-pH (Min.)	Report
Report
-	-
-
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Categorical
Categorical
MSWQS	

MS0034711-015	-TOC
-Oil & Grease
-pH (Min.)	Report
Report
-	-
-
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Categorical
Categorical
MSWQS	

MS0034711-017	-TOC
-Oil & Grease
-pH (Min.)	Report
Report
-	-
-
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Report, mg/l
Report, mg/l
6.0 (S.U.)	Categorical
Categorical
MSWQS	

2.	Maximum Permit Limitations, lb/day 

Outfall	Parameter	Categorical Limitation	Water Quality Limitation	Present Permit Limitation	Proposed Permit Limitation	Basis	
MS0034711-001	-Flow (MGD)

-BOD5
-TSS 
-NH3-N
-COD
-Oil & Grease
-Phenolic
  Compounds
-Sulfide
-Hex. Chromium
-Recoverable
 Chromium, Total
- pH (Max.)
- Temperature       (Max.)
- Nitrogen, Total  (TN)
-Phosphorous,     Total (TP)	-

856.45 
598.21
359.47
6109.37
273.26
6.35

5.111
0.587
8.518

-

-

-	-

-
-
-
-
-
-

-
-
-

9.0 (S.U.) 
90ºF

393.0 

2.10	Report

856.45
598.21
359.47
6109.37
273.26
9.808

5.111
0.587
8.518

9.0 (S.U.)
90ºF

Report

Report	Report

856.45 
598.21
359.47
6109.37
273.26
6.35

5.111
0.587
8.518

9.0 (S.U.)
90ºF

393.0

2.10	Engineering Judgment
Categorical
Categorical
Categorical
Categorical
Categorical
Categorical

Categorical
Categorical
Categorical

MSWQS
MSWQS

WLA

WLA	
MS0034711-002	-TOC
-Oil &Grease
-pH (Max.)	110 mg/l
15 mg/l
-	-
-
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711-003	-TOC
-Oil &Grease
-pH (Max.)	110 mg/l
15 mg/l
-	-
-
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711- 004	-TOC
-Oil &Grease
-pH (Max.)	110 mg/l
15 mg/l
-	-
-
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711-005	-TOC
-Oil &Grease
-pH (Max.)	110 mg/l
15 mg/l
-	-
-
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711-006	-TOC
-Oil &Grease
-pH (Max.)	110 mg/l
15 mg/l
-	-
-
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711-007	-TOC
-Oil &Grease
-pH (Max.)	110 mg/l
15 mg/l
-	-
-
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711-009	-TOC
-Oil &Grease
-pH (Max.)	110 mg/l
15 mg/l
-	-
-
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711-010	-TOC
-Oil &Grease
-pH (Max.)	110 mg/l
15 mg/l
-	-
-
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711-011	-TOC
-Oil &Grease
-pH (Max.)	110 mg/l
15 mg/l
-	-
-
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711-012	-TOC
-Oil &Grease
-pH (Max.)	110 mg/l
15 mg/l
-	-
-
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711-013	-TOC
-Oil &Grease
-pH (Max.)	110 mg/l
15 mg/l
-	-
-
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711-014	-TOC
-Oil &Grease
-pH (Max.)	110 mg/l
15 mg/l
-	-
-
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711-015	-TOC
-Oil &Grease
-pH (Max.)	110 mg/l
15 mg/l
-	-
-
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	Categorical
Categorical
MSWQS	
MS0034711-017	-TOC
-Oil &Grease
-pH (Max.)	110 mg/l
15 mg/l
-	-
-
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	110 mg/l
15 mg/l
9.0 (S.U.)	Categorical
Categorical
MSWQS	
MSWQS = Mississippi Water Quality Standards 
Note:  Values also need to be reported in mg/l except for TN and TP for Outfall 001.

Outfall 001: The flow shall be measured continuously at this outfall via continuous recorder. Oil and Grease, Hexavalent Chromium, Sulfide, pH, Temperature, and Dissolved Oxygen shall be measured twice per month with the grab samples. All other parameters shall be measured twice per month with 24 hr. composite samples. 

Outfalls 002-017: The flow at these outfalls are based upon actual rainfall (i.e. Stormwater runoff) and shall be monitored at least once per month. Oil & Grease, pH, ad TOC (Total Organic Carbon) shall be monitored monthly with grab samples and reported on a monthly DMR, including flow estimates at these outfalls. 

XII       BASIS for PROPOSED EFFLUENT LIMITS AND PERMIT CONDITIONS

I.	MS0034711-001

1.	The proposed limitations for BOD5, TSS, COD, Oil & grease (O&G),   
		Phenolic Compounds, Ammonia Nitrogen (NH3-N), Sulfide, Hexavalent 
             Chromium, Chromium (Total Recoverable), are based upon the 40 CFR 419  (Petroleum Refining Point Source Category), Subpart D (Lube Oil                   Subcategory). 
            
2.         The proposed limitations for pH are based upon the State Water Quality Criteria and 40 CFR 419 (Petroleum Refining Point Source Category), Subpart D (Lube Oil Subcategory).

3.	          The proposed limitation for Temperature is based upon the State Water                Quality Criteria and the existing permit.
		
4.		The proposed limitations for dissolved oxygen, TN, and TP are based on the   Water Quality Criteria as determined by a Waste Load Allocation. 

	II.         MS0034711 (002-007, 009-017) 

1.	The proposed limitations for O&G are based upon the 40 CFR 419            
              (Petroleum Refining Point Source Category), Subpart D (Lube Oil                  Subcategory) and the existing permit.

2.	The proposed limitation for pH is based upon the State Water Quality                         Criteria.

3.	The proposed limitations for TOC are based upon the 40 CFR 419     (Petroleum Refining Point Source Category), Subpart D (Lube Oil                 Subcategory) and the existing permit.

ATTACHMENT I

CATEGORICAL GUIDELINE LIMITATIONS CALCULATIONS

ATTACHMENT I
CATEGORICAL LIMITATIONS CALCULATIONS

A.	ADJUSTED LIMITATIONS FACTOR CALCULATIONS

Process Category	Process	Production 
(M bbls./day)	Capacity in relation to Throughput	Weighting Factor	Process Configuration	
Crude						
	Atmospheric Crude Distillation	25	1.0	-		
	Vacuum Crude Distillation	19.5	0.78	-		
	Desalting	25	1.0	-		
	Subtotal	69.5	2.78	1.0	2.78	
						
Cracking & Coking						
	Subtotal	0	0	6.0	0	
Asphalt	
					
	Production	6.5	0.26			
	Oxidation	0				
	Emulsifying	0.675	0.027			
	Subtotal	7.175	0.287	12.0	3.440	
						
Lube Processing						
	Hydro treating	11	0.44			
	Naphthenic	10	0.40			
	Subtotal	21	0.84	13	10.92	
						
Total					17.144	

a.	Total Throughput (TT): 25 bbls/day; thus, Size factor (SF): 0.71 [per 40 CFR 419.42(b)(1)]
b.	Process Configuration: 17.144, thus; Process factor (PF): 2.44 [per 40 CFR 419.22(b)(2)]
c.	Adjustable Limitation Factor (ALF) = (25)(0.71)(2.44) = 43.31

												
B.           Calculate Limits										
												
               1.           BPT - Maximum Daily Limitations (Outfall 001)							
												
	 	       Process Wastewater	               Ballast Water	        Storm Water Runoff	Total	
	 	       [40 CFR 419.42(a)]	[40 CFR 419.42(c) and 419.12(c)]	        [40 CFR 419.42(e)(2)]	 	
	Parameter	 	Max.	 	 	Max.	 	 	Max.	 	 	
	 	ALF	Daily	Adjusted	Flow	Daily	Adjusted	Flow	Daily	Adjusted	Adjusted	
	 	 	Limit*	Limit	(1000 gpd)	Limit**	Limit	(1000 gpd)	Limit***	Limit	Limit	
	BOD5	43.31	17.90	775.25	0.00	0.40	0.00	203.00	0.40	81.20	856.45	
	TSS	43.31	12.50	541.38	0.00	0.26	0.00	203.00	0.28	56.84	598.22	
	COD	43.31	127.00	5500.37	0.00	3.90	0.00	203.00	3.00	609.00	6109.37	
	Oil & Grease	43.31	5.70	246.87	0.00	0.13	0.00	203.00	0.13	26.39	273.26	
	Phenolic 	43.31	0.13	5.76	-	-	-	203.00	0.00	0.59	6.35	
	Compounds	 	 	 	 	 	 	 	 	 	 	
	Ammonia	43.31	8.30	359.47	-	-	-	-	-	-	359.47	
	Nitrogen	 	 	 	 	 	 	 	 	 	 	
	Sulfide	43.31	0.12	5.11	-	-	-	-	-	-	5.11	
	Total Chromium	43.31	0.27	11.82	-	-	-	203.00	0.01	1.22	13.04	
	Hexavalent	43.31	0.24	10.39	-	-	-	203.00	0.00	0.11	10.50	
	Chromium	 	 	 	 	 	 	 	 	 	 	
	pH	                                             mimimum 6.0 s.u. - maximum 9.0 s.u. from all sources	 	 	
												
	*   Pounds Constituent per 1000 bbls feedstock (based on Adjusted Limitation Factor)				
	**  Pounds Constituent per 1000 gallons flow (10,000 gpd)							
	*** Pounds constituent per 1000 gallons flow (203,000 gpd)							

												

												
												
               2.           BPT - Average Monthly Limitations (Outfall 001)							
												
	 	       Process Wastewater	               Ballast Water	        Storm Water Runoff	Total	
	 	       [40 CFR 419.42(a)]	[40 CFR 419.42(c) and 419.12(c)]	        [40 CFR 419.42(e)(2)]	 	
	Parameter	 	Average	 	 	Average	 	 	Average	 	 	
	 	ALF	Monthly	Adjusted	Flow	Monthly	Adjusted	Flow	Monthly	Adjusted	Adjusted	
	 	 	Limit*	Limit	(1000 gpd)	Limit**	Limit	(1000 gpd)	Limit***	Limit	Limit	
	BOD5	43.31	9.10	394.12	0.00	0.21	0.00	203.00	0.22	44.66	438.78	
	TSS	43.31	8.00	346.48	0.00	0.17	0.00	203.00	0.18	36.54	383.02	
	COD	43.31	66.00	2858.46	0.00	2.00	0.00	203.00	1.50	304.50	3162.96	
	Oil & Grease	43.31	3.00	129.93	0.00	0.07	0.00	203.00	0.07	13.60	143.53	
	Phenolic 	43.31	0.07	2.82	-	-	-	203.00	0.00	0.28	3.10	
	Compounds	 	 	 	 	 	 	 	 	 	 	
	Ammonia	43.31	3.80	164.58	-	-	-	-	 	 	164.58	
	Nitrogen	 	 	 	 	 	 	 	 	 	 	
	Sulfide	43.31	0.05	2.30	-	-	-	-	 	 	2.30	
	Total Chromium	43.31	0.16	6.93	-	-	-	203.00	0.00	0.71	7.64	
	Hexavalent	43.31	0.01	0.48	-	-	-	203.00	0.00	0.05	0.52	
	Chromium	 	 	 	 	 	 	 	 	 	 	
	pH	                                             mimimum 6.0 s.u. - maximum 9.0 s.u. from all sources	 	 	
												
	*   Pounds Constituent per 1000 bbls feedstock (based on Adjusted Limitation Factor)				
	**  Pounds Constituent per 1000 gallons flow (10,000 gpd)							
	*** Pounds constituent per 1000 gallons flow (203,000 gpd)							

												
												
               3.           BAT - Daily Maximum Limitations (Outfall 001)							
												
	 	       Process Wastewater	        Storm Water Runoff	Total				
	 	   [40 CFR 419.43(a) & (c )(1)]	        [40 CFR 419.43(f)(2)]	 				
	Parameter	 	Max.	 	 	Max.	 	 				
	 	ALF	Daily	Adjusted	Flow	Daily	Adjusted	Adjusted				
	 	 	Limit*	Limit	(1000 gpd)	Limit**	Limit	Limit				
	BOD5	-	-	-	-	-	-	-				
	TSS	-	-	-	-	-	-	-				
	COD	43.31	127.00	5,500.37	203.00	3.00	609.00	6,109.37				
	Oil & Grease	-	-	-	-	-	-	-				
	Phenolic 	-	-	9.22	203.00	0.00	0.59	9.81				
	Compounds	 	 	 	 	 	 	 				
	Ammonia	43.31	8.30	359.47	-	 	 	359.47				
	Nitrogen	 	 	 	 	 	 	 				
	Sulfide	43.31	0.12	5.11	-	 	 	5.11				
	Total Chromium	-	-	7.50	203.00	0.01	1.02	8.52				
	Hexavalent	-	-	0.48	203.00	0.00	0.11	0.59				
	Chromium	 	 	 	 	 	 	 				
	pH	                      mimimum 6.0 s.u. - maximum 9.0 s.u. from all sources				
												
	*   Pounds Constituent per 1000 bbls feedstock (based on Adjusted Limitation Factor)				
	**  Pounds Constituent per 1000 gallons flow (203,000 gpd)							

	

		  See also 5 below									

												

             4.           BAT - Average Monthly Limitations (Outfall 001)							
												
	 	       Process Wastewater	        Storm Water Runoff	Total				
	 	   [40 CFR 419.43(a) & (c )(1)]	        [40 CFR 419.43(f)(2)]	 				
	Parameter	 	Average	 	 	Average	 	 				
	 	ALF	Monthly	Adjusted	Flow	Monthly	Adjusted	Adjusted				
	 	 	Limit*	Limit	(1000 gpd)	Limit**	Limit	Limit				
	BOD5	-	-	-	-	-	-	-				
	TSS	-	-	-	-	-	-	-				
	COD	43.31	66.00	2858.46	203.00	1.50	304.50	3162.96				
	Oil & Grease	-	-	-	-	-	-	-				
	Phenolic 	-	-	2.23	203.00	0.00	0.28	2.52				
	Compounds	 	 	 	 	 	 	 				
	Ammonia	43.31	3.80	164.58	-	 	 	164.58				
	Nitrogen	 	 	 	 	 	 	 				
	Sulfide	43.31	0.05	2.30	-	 	 	2.30				
	Total Chromium	-	-	2.62	203.00	0.00	0.37	2.99				
	Hexavalent	-	-	0.22	203.00	0.00	0.05	0.26				
	Chromium	 	 	 	 	 	 	 				
	pH	               mimimum 6.0 s.u. - maximum 9.0 s.u. from all sources	 				
												
	*   Pounds Constituent per 1000 bbls feedstock (based on Adjusted Limitation Factor)				
	**  Pounds Constituent per 1000 gallons flow (203,000 gpd)							

		See also 5 below									

												

											
	5.             BAT - Monthly Average Limitations (continued)							

	Parameter	     Process Type	     Process Rate	  Maximum Daily Limit	 Adjusted 	Average Monthly Limit	Adjusted	
	 	 	 	     (M bbls./day)	 [40 CFR 419.43(c )(1)]	Limit	[40 CFR 419.43(c )(1)]	Limit	
	Phenolic	Crude	 	69.50	 	0.01	 	0.90	0.00	 	0.21	
	Compounds	 	 	 	 	 	 	 	 	 	 	
	 	Asphalt	 	7.18	 	0.08	 	0.57	0.02	 	0.14	
	 	 	 	 	 	 	 	 	 	 	 	
	 	Lube Processing	21.00	 	0.37	 	7.75	0.09	 	1.89	

	 	Total	 	-	 	-	 	9.22	-	 	2.23	
	Total Chromium	Crude	 	69.50	 	0.01	 	0.76	0.00	 	0.28	
	 	 	 	 	 	 	 	 	 	 	 	
	 	Asphalt	 	7.18	 	0.06	 	0.46	0.02	 	0.16	
	 	 	 	 	 	 	 	 	 	 	 	
	 	Lube Processing	21.00	 	0.30	 	6.28	0.10	 	2.18	

	 	Total	 	-	 	-	 	7.50	-	 	2.62	
	Hexavalent	Crude	 	69.50	 	0.00	 	0.05	0.00	 	0.02	
	Chromium	 	 	 	 	 	 	 	 	 	 	
	 	Asphalt	 	7.18	 	0.00	 	0.03	0.00	 	0.01	
	 	 	 	 	 	 	 	 	 	 	 	
	 	Lube Processing	21.00	 	0.02	 	0.40	0.01	 	0.18	

	 	Total	 	 	 	 	 	0.48	 	 	0.22	

											

               6.           BCT - Daily Maximum Limitations (Outfall 001)							

												
	 	       Process Wastewater	        Storm Water Runoff	Total				
	 	       [40 CFR 419.44(a)]	        [40 CFR 419.44(e)(2)]	 				
	Parameter	 	Max.	 	 	Max.	 	 				
	 	ALF	Daily	Adjusted	Flow	Daily	Adjusted	Adjusted				
	 	 	Limit*	Limit	(1000 gpd)	Limit**	Limit	Limit				
	BOD5	43.31	17.90	775.25	203.00	0.40	81.20	856.45				
	TSS	43.31	12.50	541.38	203.00	0.28	56.84	598.22				
	COD	-	-	-	-	-	-	-				
	Oil & Grease	43.31	5.70	246.87	203.00	0.13	26.39	273.26				
	Phenolic 	-	-	-	-	-	-	-				
	Compounds	 	 	 	 	 	 	 				
	Ammonia	-	-	-	-	 	 	 				
	Nitrogen	 	 	 	 	 	 	 				
	Sulfide	-	-	-	-	 	 	 				
	Total Chromium	-	-	-	-	-	-	-				
	Hexavalent	-	-	-	-	-	-	-				
	Chromium	 	 	 	 	 	 	 				
	pH	                mimimum 6.0 s.u. - maximum 9.0 s.u. from all sources	 				
												
	*   Pounds Constituent per 1000 bbls feedstock (based on Adjusted Limitation Factor)				
	**  Pounds Constituent per 1000 gallons flow (203,000 gpd)							

												

												

												

             7.           BCT - Average Monthly Limitations (Outfall 001)							

	 	       Process Wastewater	        Storm Water Runoff	Total				
	 	       [40 CFR 419.44(a)]	        [40 CFR 419.44(e)(2)]	 				
	Parameter	 	Average	 	 	Average	 	 				
	 	ALF	Monthly	Adjusted	Flow	Monthly	Adjusted	Adjusted				
	 	 	Limit*	Limit	(1000 gpd)	Limit**	Limit	Limit				
	BOD5	43.31	9.10	394.12	203.00	0.22	44.66	438.78				
	TSS	43.31	8.00	346.48	203.00	0.18	36.54	383.02				
	COD	-	-	-	-	-	-	-				
	Oil & Grease	43.31	3.00	129.93	203.00	0.07	13.60	143.53				
	Phenolic 	-	-	-	-	-	-	-				
	Compounds	 	 	 	 	 	 	 				
	Ammonia	-	-	-	-	 	 	 				
	Nitrogen	 	 	 	 	 	 	 				
	Sulfide	-	-	-	-	 	 	 				
	Total Chromium	-	-	-	-	-	-	-				
	Hexavalent	-	-	-	-	-	-	-				
	Chromium	 	 	 	 	 	 	 				
	pH	               mimimum 6.0 s.u. - maximum 9.0 s.u. from all sources	 				
												
	*   Pounds Constituent per 1000 bbls feedstock (based on Adjusted Limitation Factor)				
	**  Pounds Constituent per 1000 gallons flow (203,000 gpd)							

												

												

												
             8.           Summary of Categorical Limitations (Outfall 001)							
												
	Parameter	                   Maximum Daily Limitation	            	                        Average Monthly Limitation	 	
	 	BPT	BAT	BCT	 Limiting Case	 	BPT	BAT	BCT	      Limiting Case	
	BOD5	856.45	-	856.45	856.45		438.78	-	438.78	 	438.78	
	TSS	598.22	-	598.22	598.22		383.02	-	383.02	 	383.02	
	COD	6109.37	6109.37	-	6109.37		3162.96	3162.96	-	 	3162.96	
	Oil & Grease	273.26	-	273.26	273.26		143.53	-	143.53	 	143.53	
	Phenolic 	6.35	9.81	-	6.35		3.10	2.52	-	 	2.52	
	Compounds	 	 	 	 		 	 	 	 	 	
	Ammonia	359.47	359.47	-	359.47		164.58	164.58	-	 	164.58	
	Nitrogen	 	 	 			 	 	 	 	 	
	Sulfide	5.11	5.11	-	5.11		2.30	2.30	-	 	2.30	
	Total Chromium	13.04	8.52	-	8.52		7.64	2.99	-	 	2.99	
	Hexavalent	10.50	0.59	-	0.59		0.52	0.26	-	 	0.26	
	Chromium	 	 	 	 		 	 	 	 	 	
	pH	           minimum 6.0 s.u. - maximum 9.0 s.u.	           minimum 6.0 s.u. - maximum 9.0 s.u.	 	

												

												

												

												

                  9.          Categorical Limitations (Outfall 002) - All values are monthly maximums.					
												
	Parameter	              BAT	              BCT	     Limiting Case					
	 	[40 CFR 419.43(f)(1)]	  [40 CFR 419.44(e)(1)]	 	 					
	TOC	          110 mg/l	               -       	          110 mg/L					
	Oil & Grease	                -	              15 mg/l	            15 mg/L					
												
                   10.          Categorical Limitations (Outfall 003) - All values are monthly maximums.					
												
	Parameter	              BAT	              BCT	     Limiting Case					
	 	[40 CFR 419.43(f)(1)]	  [40 CFR 419.44(e)(1)]	 	 					
	TOC	          110 mg/l	               -       	          110 mg/L					
	Oil & Grease	                -	              15 mg/l	            15 mg/L					
												
	11.         Categorical Limitations (Outfall 004) - All values are monthly maximums					
												
	Parameter	              BAT	              BCT	     Limiting Case					
	 	[40 CFR 419.43(f)(1)]	  [40 CFR 419.44(e)(1)]	 	 					
	TOC	          110 mg/l	               -       	          110 mg/L					
	Oil & Grease	                -	              15 mg/l	            15 mg/L					
												
	12.         Categorical Limitations (Outfall 005) - AA values are monthly maximums.					
												
	Parameter	              BAT	              BCT	     Limiting Case					
	 	[40 CFR 419.43(f)(1)]	  [40 CFR 419.44(e)(1)]	 	 					
	TOC	          110 mg/l	               -       	          110 mg/L					
	Oil & Grease	                -	              15 mg/l	            15 mg/L					

	13.         Categorical Limitations (Outfall 006) - All values are monthly maximums					
												
	Parameter	              BAT	              BCT	     Limiting Case					
	 	[40 CFR 419.43(f)(1)]	  [40 CFR 419.44(e)(1)]	 	 					
	TOC	          110 mg/l	               -       	          110 mg/L					
	Oil & Grease	                -	              15 mg/l	            15 mg/L					
												
	14.         Categorical Limitations (Outfall 007) - All values are monthly maximums						
													
	Parameter	              BAT	              BCT	     Limiting Case						
	 	[40 CFR 419.43(f)(1)]	  [40 CFR 419.44(e)(1)]	 	 						
	TOC	          110 mg/l	               -       	          110 mg/L						
	Oil & Grease	                -	              15 mg/l	            15 mg/L						
													
	15.         Categorical Limitations (Outfall 009) - All values are monthly maximums						
													
	Parameter	              BAT	              BCT	     Limiting Case						
	 	[40 CFR 419.43(f)(1)]	  [40 CFR 419.44(e)(1)]	 	 						
	TOC	          110 mg/l	               -       	          110 mg/L						
	Oil & Grease	                -	              15 mg/l	            15 mg/L						
													
	16.         Categorical Limitations (Outfall 010) - All values are monthly maximums						
													
	Parameter	              BAT	              BCT	     Limiting Case						
	 	[40 CFR 419.43(f)(1)]	  [40 CFR 419.44(e)(1)]	 	 						
	TOC	          110 mg/l	               -       	          110 mg/L						
	Oil & Grease	                -	              15 mg/l	            15 mg/L						
													
	17.         Categorical Limitations (Outfall 011) - All values are monthly maximums						
													
	Parameter	              BAT	              BCT	     Limiting Case						
	 	[40 CFR 419.43(f)(1)]	  [40 CFR 419.44(e)(1)]	 	 						
	TOC	          110 mg/l	               -       	          110 mg/L						
	Oil & Grease	                -	              15 mg/l	            15 mg/L						
													
	18.         Categorical Limitations (Outfall 012) - All values are monthly maximums						
													
	Parameter	              BAT	              BCT	     Limiting Case						
	 	[40 CFR 419.43(f)(1)]	  [40 CFR 419.44(e)(1)]	 	 						
	TOC	          110 mg/l	               -       	          110 mg/L						
	Oil & Grease	                -	              15 mg/l	            15 mg/L						
	19.         Categorical Limitations (Outfall 013) - All values are monthly maximums						
													
	Parameter	              BAT	              BCT	     Limiting Case						
	 	[40 CFR 419.43(f)(1)]	  [40 CFR 419.44(e)(1)]	 	 						
	TOC	          110 mg/l	               -       	          110 mg/L						
	Oil & Grease	                -	              15 mg/l	            15 mg/L						
													
	20.         Categorical Limitations (Outfall 014) - All values are monthly maximums						
													
	Parameter	              BAT	              BCT	     Limiting Case						
	 	[40 CFR 419.43(f)(1)]	  [40 CFR 419.44(e)(1)]	 	 						
	TOC	          110 mg/l	               -       	          110 mg/L						
	Oil & Grease	                -	              15 mg/l	            15 mg/L						
													
	21.         Categorical Limitations (Outfall 015) - All values are monthly maximums						
													
	Parameter	              BAT	              BCT	     Limiting Case						
	 	[40 CFR 419.43(f)(1)]	  [40 CFR 419.44(e)(1)]	 	 						
	TOC	          110 mg/l	               -       	          110 mg/L						
	Oil & Grease	                -	              15 mg/l	            15 mg/L						
													
	22.         Categorical Limitations (Outfall 017) - All values are monthly maximums						
													
	Parameter	              BAT	              BCT	     Limiting Case						
	 	[40 CFR 419.43(f)(1)]	  [40 CFR 419.44(e)(1)]	 	 						
	TOC	          110 mg/l	               -       	          110 mg/L						
	Oil & Grease	                -	              15 mg/l	            15 mg/L						

ATTACHMENT II

TOXICITY SCREENING

ATTACHMENT III

WASTE LOAD ALLOCATION