NCG510050_Regional Office Historical File Pre 2018

SOC Priority Project : Yes No X
If Yes , SOC No. :
To: Permits and Engineering Unit
Water Quality Section
Attention: Charles Alvarez
Date : April 1 , 1993
NPDES STAFF REPORT AND RECOMMENDATION
County: Gaston
Permit No . NCG510050
PART I - GENERAL INFORMATION
1 . Facility and Address : Omni Mart #32
Gaston Merchants Oil Company
1513 North Chester Street
Gastonia , North Carolina 28052
2 . Date of Investigation: March 31 , 1993
3 . Report Prepared by: Kim H . Colson , Environmental Engineer I
4 . Persons Contacted and Telephone Number: N/A
5 . Directions to Site : From the intersection of I-85 and US Hwy
321 in the City of Gastonia , travel south on US Hwy 321
approximately 0 . 4 mile . Omni Mart #32 is located on the east
(left) side of US Hwy 321 .
6 . Discharge Point(s) , List for all discharge points :
Latitude : 35° 16 ' 39" Longitude : 81° 11 ' 15"
Attach a USGS map extract and indicate treatment facility site
and discharge point on map .
U. S .G. S . Quad No . : F14SW
U. S .G . S . Quad Name : Gastonia North , NC
7 . Site size and expansion area consistent with application?
Yes .
8 . Topography (relationship to flood plain included) : The site
is above a small flood plain .
9 . Location of nearest dwelling: None within 400 feet .
10 . Receiving stream or affected surface waters : UT to Long Creek
a . Classification: C
b . River Basin and Subbasin No . : Catawba 030836
c . Describe receiving stream features and pertinent
downstream uses : General "C" classification uses .
Receiving stream is a small branch with sandy bottom,
mainly urban watershed.

Page Two
PART II — DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1 . a . Volume of wastewater to be permitted: 0 .0144 MGD
(ultimate design capacity)
b. Current permitted capacity of the wastewater treatment
facility: N/A
c . Actual treatment capacity of the current facility
(current design capacity) : N/A
d . Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years : N/A
e . Please provide a description of existing or substantially
constructed wastewater treatment facilities : N/A
f . Please provide a description of proposed wastewater
treatment facilities : Proposed treatment will consist of
an oil/water separator, diffused aeration and carbon
adsorption .
g . Possible toxic impacts to surface waters : Provided
effluent limits of the General Permit are met , there are
no expected toxic impacts to surface waters .
h . Pretreatment Program (POTWs only) : N/A
2 . Residuals handling and utilization/disposal scheme : N/A
a . If residuals are being land applied, please specify DEM
Permit No . :
Residuals Contractor :
Telephone No . :
b. Residuals stabilization: PSRP PFRP Other
c . Landfill :
d . Other disposal/utilization scheme (Specify) :
3 . Treatment plant classification (attach completed rating
sheet) : Class I
4 . SIC Code(s) : 5541
Wastewater Code(s)
Primary: 66 Secondary:
Main Treatment Unit Code : 56000
PART III — OTHER PERTINENT INFORMATION

Page Three
1 . Is this facility being constructed with Construction Grant
Funds or are any public monies involved (municipals only)?
N/A
2 . Special monitoring or limitations (including toxicity)
requests : N/A
3 . Important SOC, JOC or Compliance Schedule dates (Please
indicate) : N/A
4 . Alternative Analysis Evaluation :
Spray Irrigation : Insufficient area .
Connection to Regional Sewer System: The applicant indicated
that the City of Gastonia would not accept the waste .
Subsurface : Insufficient area .
Other disposal options : N/A
5 . Air Quality and/or Groundwater concerns or hazardous materials
utilized at this facility that may impact water quality, air
quality, or groundwater : There are no known Air Quality or
hazardous materials concerns . Groundwater comments should be
obtained .
6 . Other Special Items : N/A
PART IV — EVALUATION AND RECOMMENDATIONS
The applicant , Gaston Merchants Oil Company, has applied for
coverage under General Permit No . NCG510000 . The proposed
groundwater remediation project appears to be applicable for
coverage under the General Permit . The applicant has proposed
treatment facilities consistent with the General Permit .
The only concern is that the contaminated groundwater may be
discharging naturally into the stream. The groundwater section
should indicate if the recovery pumps are adequate to prevent the
contaminated groundwater from reaching surface waters .
It is recommended that coverage under the General Permit be
granted and a certificate of coverage be issued.
Signature of report preparer
Water Quali Regional Supervisor
17/07
Date

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I I--1 i sI‘u J%..HLC 1-'Jr, L.LHJJIrRLH l lVrr UI- I-AWILI I IES
Name of Plant: Or-At-AI ri\AtT C,ASS-Tart AMCµAo1c5 C Co.
Owner or Contact Person: l-71p.srr v-i 'per--)5,2 ,.)
Mailing Address: 1st" , t-(.dcl.ra C. -- -t•t:•n S-,I ( -te#.AA/WC_ 2.$0SZ
County: (- Sml Telephone: 0.4/ A 7 - zcc
NPDES Permit No. NCel94sI6o50 Nondisc. Per. No. — _
IssueDate: ,,-)IA Expiration Date:
Existing Facility New Facility ,l
Rated By: V. Col-kw) Moto Date: ra/t/e 3
Reviewed (Train. & Cert.)' Reg. Office
Reviewed (Train. & Cert.) Central Office
ORC ,J/A Grade ,v/A
Plant Class: (circle one) 0 II III IV Total Points
ITEM POINTS (5)SECONDARY TREATMENT UNITS
(a) Carbonaceous Stage
(1) Industrial Pretreatment Units and/or (i)Aeration - High Purity Oxygen System 20
Industrial Pretreatment Program Diffused Air System 10
(see definition No. 33) 4 Mechanical Air System (fixed,
(2) DESIGN FLOW OF PLANT IN GPD floating or rotor)(not applicable to non-contaminated cooling waters, sludge 3
Separate Sludge Reaeration 3
• handling facilities for water purification plants, totally
closed cycle systems (def. No. 11), and facilities (ii) Trickling Filter
consisting only of Item (4) (d) or Items (4) (d) and (11) (1High Rate 7
0 -- 20,000 Standard Rate 5
20,001 — 50,000 2 Packed Tower 5
50,001 — 100,000 3 (i i i) Biological Aerated Filter or Aerated
100,001 — 250,000 4 Biological Filter 1 0
250,001 -- 500,000 5 (iv) Aerated Lagoons 10
500,001 —1,000,000 8
1,000,001 --2,000,000 10 (v) Rotating Biological Contactors 10
2,000,001 (and up) - rate 1 point additional for each (vi) Sand Filters-
200,000 gpd capacity up to a intermittent biological 2
maximum of 30 recirculating biological 3
Design Flow (gpd) (vii) Stabilization Lagoons 5
(3) PRELIMINARY UNITS (see definition no.32) (viii)Clarifier 5
(a) Bar Screens 1 •
or (ix) Single stage system for combined
(b) Mechanical Screens, Static Screens or carbonaceous removal of BOO and
Comminuting Devices 2 nitrogenous removal by nitrification
(c) Got R inutin 1 (see del. No. 12) (Points for this item
or have to be in addition to items (5) (a)
(i)through(5) (a) (viii) 8
(d) Mechanical or Aerated Grit Removal 2 (x) Nutrient additions to enhance BOD
(e) Flow Measuring Device 1 removal
or 5
(xi) Biological Culture ('Super Bugs') addition
(f) Instrumented Flow Measurement 2 to enhance or
(g)Preaeration 2 (b) Nitrogenous Stage
ganx:compound removal 5
(h) Influent Flow•Equalization 2 (i) Aeration - High Purity Oxygen System 20
(i) Grease or Oil Separators- Gravity © Diffused Air System 10
Mechanical 3 Mechanical Air System (fixed,
Dissolved Air Flotation. 8 floating,or-rotor) 8
(i7 Prechlorination 5 Separate Sludge Reaeration 3
(ii) Trickling Filter -
(4) PRIMARY TREATMENT UNITS High Rate 7
(a) Septic Tank(see definition no.43) 2 Standard Rate 5
(b) Imhoff Tank 5 Packed Tower 5
(c)b Primary Clarifiers (iii) Biological Aerated Filter or Aerated
5 Biological Filter 10
(d) Settling Ponds or Settling Tanks for Inorganic (iv) Rotating Biological Contactors
Non-toxic Materials (sludge handling facilities 10
for water purification plants, sand, gravel, (v) Sand Filter-
stone, and other mining operations except intermittentecicatinbiological 2
recreational activities such as gem or gold recirculating biological 3
mining) 2 (vi) Clarifier 5

(6) TERTIARY OR ADVANCED TREATMENTUNIT (10) CHEMICAL ADDITION SYSTEM(S)(See definition No.9)
(a) Activated Cartons Beds -without carbon regeneration O (not applicable to chemical additans rated as item
(3) (j). (5) (a) (xi). (6) (a). (6) (b). (7) (b). (7) (e).
with carbon regeneration 15 (9) (a)
(b) Powdered or Granular Activated Carbon Feed - , (9) (b), or(9) (c)5 points each: List:
without carbon regeneration 5 5
with carbon regeneration 15 5
(c) Air Stripping © 5
(d) Denitrification Process (separate process) 10 5
(e) Electrodialysis - 5 (11) MISCELLANEOUS UNITS
(f) Foam Separation 5 (a) Holding Ponds, Holding Tanks or Settling Ponds
(g) Ion Exchange 5 for Organic or Toxic Materials including wastes
(h) Land Application of Treated Effluent from mining operations containing nitrogen and/or
(see definition no. 22b) (not applicable for phosphorous compounds in amounts significantly
sand, gravel, stone and other similar mining greater than is common for domestic wastewater 4
operations) (b) Effluent Flow Equalization (not applicable to storage
(i) on agriculturally managed sites (See def. , basins which are inherent in land application systems). 2
No.4) 10 (c) Stage Discharge (not applicable to storage basins
(ii) by high rate infiltration on non-agriculturally inherent in land application systems
managed sites (includes rotary distributors
and similar fixed nozzle systems) 4 (e) Pumps(e) Stand-By Power Supply...---------. 3
(iii) by subsurface disposal (includes low pressure (f) Thermal Pollution Control Device 3
pipe systems and gravity systems except at
plants consisting of septic tank and nitrifica-
tion lines only) .. 4 TOTAL POINTS 16
(i) Microscreens 5
(j) Phosphorus Remoial by Biological Processes CLASSIFICATION
(See def.No.26) 2 0
(k) Polishing Ponds - without aeration 2 Class I.. _ 5 - 25 Points
with aeration 5 Class II. _ . _ 26- 50 Points
(I) Post Aeration - cascade 0 Class III....._..__...._.........__.._...._.... 51- 65 Points
diffused or mechanical . . . 5 Class IV. — _ .. - 66- Up Points
(m) Reverse Osmosis 5
(n) Sand or Mixed-Media Filters-low rate 2 Facilities having a rating of one through four points, inclusive,
high rate 5 do not require a certified operator. Classification of all other
(o) Treatment processes for removal of metal or facilities requires a comparable grade operator in responsible
cyanide 15 charge.
(p) Treatment processes for removal of toxic
materials other than metal or cyanide 1 5 Facilities having an activated sludge process will be assigned
a minimum classification of Class II.
I SLUDGE TREATMENT Facilities having treatment processes for the removal of metal
(a) Sludge Digestion Tank -Heated 10 or cyanide will be assigned a minimum classification of Class II.
Aerobic 5
Unheated 3 Facilities having treatment processes for the biological removal
(b) Sludge Stabilization (chemical or thermal) 5 of phosphorus will be assigned a minimum classification of Class
(c) Sludge Drying Beds- Gravity 2 III.
Vacuum Assisted 5
(d) Sludge Elutriation 5 In-plant processes and related control equipment which are an
(e) Sludge Conditioner (chemical or thermal) 5 integral part of industrial production shall not be considered waste
(f) Sludge Thickener(gravity) 5 treatment. Likewise, discharges of wastewater from residences
(g) Dissolved Air Flotation Unit having a design flow of 1.000 gpd or less, shall not be subject to
(not applicable to a unit rates as (3) (I) 8 rating.
(h) Sludge Gas Utilization (including gas storage) . . . . 2
(i) Sludge Holding Tank- Non-aeratedrate .-- 5 ADDITIONAL COMMENTS;
2
(j) Sludge Incinerator - (not including activated
carbon regeneration) 10
(k) Vacuum Filter. Centrifuge or Filter Press or other
similar dewatering devices 10
(8) SLUDGE DISPOSAL(including incinerated ash)
(a)Lagoons 2
(b) Land Application (surface and subsurface)
r
(see definition 22a)
=where the facility holds the land app. permit . . . 10
-by contracting to a land application operator who
holds the land application permit 2
-land application of sludge by a contractor who does
not hold the permit for the wastewater treatment
facility where the sludge is generated 10
(c) Landfilled(burial) 5
(9) DISINFECTION
(a) Chlorination 5
(b) Dechlorination 5
(c) Ozone 5
(d) Radiation 5

,'`- f, A I •
i . j\ C7 71/ 3
'< , �- DIVISION OF ENVIRONMENTAL MANAGEMENT
8�
Quality �• NATURALrr. ONATURAL(5k 1 47 • Water R!SOURCES AN Tb
\v� \i r k9 , A Permits and Engineering Unit COMMUNITY Iv..\,' T
9" , 3I 1 2 1993
����,,_ ' March 10, 1993
To: Mooresville Regional Office 11Y1SIMI aF ;MO• ., 6LMEIQ
MOORESVILLE REOIOPIAL OFFICE
From: Charles Alvar,nv. Engineer, NPDES Permits
Subject: The Gaston Merchants Oil Company Omni Mart #32,
NCGS 10050 in Gaston County, has applied for an ATC and GP for
groundwater remediation. Please issue a staff report on the above
project. If you need more information please call me at 919/ 733-
5083 ext 573.