NCG510131_wasteload allocation_19890202

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCOO -
FACILITY NAME:
Facility Status:
(effete am)
Permit Status: REN WAL S 0cwwATm (MW
klrcle wo)
Major Win,or��
Pipe No:
Design .Capacity (MGD): — "2 ♦ C 14
Domestic (S of Flow):
Industrial (S of Flow):
Comments:
iA LEt SUL9 .
RECEIVING STREAM:.
�7 21
Class:
Sub -Basin:
Reference USGS Quad:— L- 22,_ 5 L_^ (please attach)
County:
Regional Office: As Fa Mo . �fia) We
WI
WS
(circle one)
Requested By: �c1 AU , o �� s t az� Date: f4 / L7 ,f
Prepared By: ate: 209
Reviewed By:— Date: , Z
o �9
Modeler
Date Rec.
X BS
Q z,1b8
0'jl,
Drainage Area (m?) Q Z S Avg. Streamflow (cfs):0 - Z3
7Q10 (cfs) O Winter 7Q10 (cfs) Q 30Q2 (cfs) Q_
Toxicity Limits.: IW19 L00 O x ++ielre o ) cute / Chronic
Instream Monitoring:
Parameters
Upstream
Downstream
Location
Location
-------------------------
Mo. Avg. Daily Max. Min/Max Mon. Freq
Flow (mgd): 0.014
Oil and Grease (mg/1): 30 60 2/month
Settleable Solids (ml/1): 0.1 0.2 2/month
pH (su): 6-9 2/month
Turbidity (NTU): 50 .2/month
Toxicity Testing Req.: Chronic/Ceriodaphnia/Qrtrly (see attached)
----------------------------- COMMENTS -----------------------------------
The following product is being recovered: Unleaded gasoline. No other
products to be recovered without modification of this permit. Limits per
standard Divisional procedure for oil & petroleum storage facilities. All
volumes of wastewater leaving the facility must be monitored
(cont. monit.). Monit. for Benzene, Toluene, Xylene & Ethylene should
be done on the same schedule as toxicity testing. Monitoring and
toxicity samples should be taken at the same time, within 24 hrs of the
beginning of discharge.
Within 60 days of effective date of this permit or startup of discharge
the permittee shall also submit the results of the following analyses.
These analyses shall be performed on a representative sample of the
groundwater effluent discharge, taken after any treatment ( required one
time only ): 1) EPA Method 625 - Acid and Base/Neutral Extrac. Org.
2) EPA Method 624 - Purgeable Organics
A reopener clause should be placed in the permit to allow for limits to
be placed on toxicants should the facility fail its whole effluent tox.
test.

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Facility Name: Little Huff, Inc
NPDES No.: NC0075426 \� `�`- ���m°r
t » � '��
Type of Waste: Industrial
Status: propnsed/New Q�
Receiving Stream: UT to Deep Creei
Classificationx �� vuSM- oUS W
SubI 0 1oM01 Drainage area: 0.25 sq mi
County: Person Summer 7Q10: 0 cf's
Regional Office: Raleigh Winter 7Q10: 0 cfs
Requestor: David Fos�er Average flow: 0.23 c�s
Date o�Request: 092788 30Q2: 0 cfs
Quad: B 23 SW
--------- ---------- RECOMMENDED EFFLUENT LIMITS -------------------------
Mo. Avg. Daily Max. Max Mon. Freq
Flow (ill gd): 0.014
O�l and Grease (mg/l): 30 60 2/month
Settleab�s Solids (ml''l}: 0.1 0.2 2/month
6-9 2/month
Turbidity (NTU): 50 2/month
To ty Testing Req. : Chronic/Ceriodaphnia/Qrtrly (see attache'1)
-------------..... ..... .... .... .... ..... ... ... --... ... ... ... ..... - COMMENTS -----------------------------------
following product is being recovered: Unleaded gasoline. No other
ducts to be recovered without modcation of thjs pmits per
standard D�visional procedure for oil � petroleum storage �acilities. All
volumes of wastewater leaving the facility must be monitored
( continuous monito/'ing ). Monitoring for B T l X l shou1d
be done on the same schedule as toxicity testing. 1ng�an�
�oxicity samples should be taken at the same time, 24 hrs of the
beginning of discharge. `~�w-+�w M=�@����=�m���
�|ithin 60 days of effective date of this permit or startup of discharge �
the .... shall also submit the res�ults cif the following analyses.
��� shall be perfc'rmed on a representative sample of the
uent discharge� taken after any treatment ( required ohe
time only ) : 1) EPA MethodAcid and Base/Neutral Extrac.
2) EPA Method 624 - Purgeable Organics
A rcx�pener clause should be placed in the pern�it tc' allc'w for limits to
�he placed on tox1cants should the facility fail its whole effluent tux.
) w~
________ __ __ ..... _..... ..... .... _____________ ______________________
� �s-��/ �� ' D
1� ..ecommended by: ���i���� ____
ech Support Supavisor:
�egional Supervisor:
Pe/mits � Engineerzng:
Da:e:
Date:
__.... ....
///.; AV- -
o.. J4.. ^0'"? -�.

Facility Name �-Q ✓lU "� PermitUp 'w C. 0 d�,
CHRONIC TOXICITY TESTING REQUIREMENT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity in any two consecutive toxicity tests,
using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic
Bioassay Procedure - Revised "February 1987) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or
significant mortality is C1 q % (defined as treatment two in the North Carolina procedure
document). The permit holder shall perform guarter monitoring using this procedure to establish
compliance with the permit condition. The first lest wilLhe performed after hirty days from
issuance of this permit during the months of I C . Effluent
sampling for -this testing shall be performed at the N ES permitted nal effluent discharge below
all treatment processes. �-
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the month in which it was performed, using the.parameter
code TGP3B. Additionally, DEM Form AT-1 (original) is to be sent to the following address:
Attention: Technical Services Branch
North Carolina Division of
Environmental Management
P.O. Box 27687
Raleigh, N.C. 27611
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual
chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, this
monthly test requirement will revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Environmental Management indicate potential impacts to the receiving stream, this
permit may be re -opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival and appropriate environmental controls, shall constitute an invalid test
and will require immediate retesting(within 30 days of initial monitoring event). Failure to submit
suitable test results will constitute noncompliance with monitoring requirements.
7Q10 0 cfs
Permited Flow 0.0 14 MGD
IWC% too 7.
Basin & Sub -basin O
Receivin_ `treaun U Z— �0
County QAS
Recommended by:
va-' CA
Date t 1 .9 *
"Chronic Toxrctt _ (Ceriodaphnia) P/F at.`�% ee Part ~ 3 Condition G
<..

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NOV22 iM8-
FE'i.IITS & ENG1:1"]EEl, .(3
DATE: November L, 1988
NPDES STAFF REPORT AND RECOMMENDATIONS
COUNTY: Person
NPDES PERMIT No. NC0075426 (new)
PART I - GENERAL INFORMATION
1. Facility and Address: Morristown Grocery
US Highway 158
Surl, NC 27573
2. Date of Investigation: 11/2/88
3. Report Prepared By: Rick Hiers, Environmental Engineer
4. Persons Contacted & Telephone No.: Neil Humphries
President
Little Huff Oil Co.
[phone]
5. Directions to Site: Highway 501 North
from Durham, then right on Highway 158 East in Roxboro.
Facility is on the right approximately 6 miles from
Highway 501.
6. Discharge Point - Latitude: 36021101/1
Longitude:7805413411
Attach a USGS Map Extract and indicate treatment plant site
and discharge point on map.
USGS Quad No. B23SW or USGS Quad Name Timberlake, NC
7. Size (land available for expansion and upgrading):
Less than one acre
8. Topography (relationship to flood plain included):
Mostly flat, sloping slightly (less than 50)
toward rear of property.
9. Location of nearest dwelling: approximately 100 feet
from the proposed treatment facility

Staff Report and Recommendations
Morristown Grocery
Page -2-
10. Receiving stream or affected surface waters: UT to Deep
Creek.
a. Classification: WS-III NSW
b. River Basin and Subbasin No.: 03:04:01
C. Describe receiving stream features and pertinent
downstream uses: The effluent will be piped along
a small tributary for about 1000 feet and will
discharge into a UT to Deep Creek just before it
flows under Highway 158. The UT averages about 8
feet wide and 1 foot deep and is slow -moving at
the proposed discharge point. There are no known
uses of the UT or Deep Creek near the proposed
discharge.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Type of wastewater: 0 o Domestic
100 o Industrial
a. Volume of Wastewater: 0.014
b. Types and quantities of industrial wastewater:
Premium unleaded gasoline - contaminated
groundwater.
C. Prevalent toxic constituents in wastewater:
Premium unleaded gasoline.
d. Pretreatment Program (POTWs only): N/A
in development approved
should be required not needed
2. Production rates (industrial discharges only) in
pounds: N/A
a.
b.
Highest month in the last 12 months
Highest year in last 5 years
3. Description of industrial process (for industries only) and
applicable CFR Part and Subpart: convenience store/gas
station.

Staff Report and Recommendations
Morristown Grocery
Page -3-
4. Type of treatment (specify whether proposed or
existing): proposed counter -flow packed tower for air
stripping.
5. Sludge handling and disposal scheme: No sludge will be
generated,
6. Treatment Plant Classification: N/A
7. SIC CODE: N/A
8. Wastewater Codes: 66
PART III - OTHER PERTINENT INFORMATION
1. . Is this facility being constructed with Construction Grants
Funds (municipals only)? N/A
2. Special monitoring requests: See below
3. Additional effluent limits requests: See below
4. Other: See below
PART IV - EVALUATION AND RECOMMENDATIONS
The Raleigh Regional Office has reviewed the submitted
information and has conducted a site evaluation for this
permit request. It appears that the proposed stripping
tower will adequately treat the dissolved organic gasoline Y
constituents in the groundwater. In the application
materials, there is a request for a two week minimum
monitoring frequency. Because the wastewater should be very
consistent, this request is acceptable to the Raleigh
Regional Office. There is also a request for a sampling
schedule identical to the one in NPDES Permit No. NC0071871.
This also seems to be acceptable as far as the frequency
goes, but perhaps ethylene should be added to the list of
monitored parameters since it is one of the BTXE (benzene,
toluene, xylene, ethylene) components of gasoline mentioned
in the permit application materials. Also, other parameters
may

Staff Report and Recommendations
Morristown Grocery
Page -4-
need to be monitored based on the new guidelines for this
type of wastewater. A revised 7Q10 estimate greater than 0
in the receiving stream is currently being pursued. This
may affect the wasteload allocation.
Because the proposed treatment system appears to be
adequate and has been proven in the past, the Raleigh
Regional Office recommends that a draft NPDES permit be
prepared and placed at public notice. If no significant
adverse public comment is received, the permit should be
issued for a three (3) year period, as groundwater
restoration should be completed in this time.
c2L-UE��
Signature of Report Preparer
Signature of Yafer Quality
Regional Supervisor
WAK:RH:bas

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