NC0085979_Permit Issuance_20111223

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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
December 23, 2011
Mr. Eric Mot2:no
North Carolina Department of Transportation
4809 Beryl Road
Raleigh, North Carolina 27606
Subject: Issuance of NPDES Permit
NCO085979 NCDOT
Rosman Maintenance Facility
Transylvania County
Grade 1 P/C Facility
Dear Mr. Mot2:no:
Dee Freeman
Secretary
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES discharge permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North
Carolina and the U.S. Environmental Protection Agency dated October 15, 2007 (or as subsequently amended).
This permit includes the following major changes from the draft permit sent to you on October 12, 2011:
Turbidity monitoring and limit have been removed from the permit. The French Broad River, while
impaired for turbidity in some sections, is not at the discharge location.
pH limits have been removed due to concern about naturally occurring low pH of the groundwater.
If any parts, measurement frequencies, or sampling requirements contained in this permit are unacceptable, you
have the right to an adjudicatory hearing upon written request within thirty (30) days after receiving this letter. Your
request must take the form of a written petition conforming to Chapter 150B of the North Carolina General Statutes, and
must be filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714.
Unless such demand is made, this permit remains final and binding.
This permit is not transferable except after notifying the Division of Water Quality. The Division may modify and
re -issue, or revoke this permit. Please notice that this permit does not affect your legal obligation to obtain other permits
required by the Division of Water Quality, the Division of Land Resources, the Coastal Area Management Act, or other
federal or local governments.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone] Customer Service:1-877-623-6748
Internet http: I I h2o.state.nc.us I
An Equal Opportunity % Affirmative Action Employer
_ .One1V C1T0 ia
AWMAJ911b,

If you have questions, or if we can be of fiuther service, please contact Jim McKay at [e-mail] or
call [phone].
Sincerely, 4
s
(a)?Coleen H. Sullins
cc: Asheville Regional Office/Surface Water Protection
Central Files
Aquatic Toxicity Unit - via email
TACU, James Pugh - via email
NPDES Unit f

Permit NCO085979
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
North Carolina Department of Transportation
is hereby authorized to discharge wastewater from a facility located at the
NCDOT Rosman Maintenance Facility
100 Old Calvert Landfill Road
Brevard, NC 28716
Transylvania County
to receiving waters designated as the French Broad River in the French Broad River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts
I, II, III and IV hereof.
This permit shall become effective February 1, 2012.
This permit and authorization to discharge shall expire at midnight on September 30, 2015.
Signed this day December 23, 2011.
Coleen H. Sullins, Director
Division of Water Quality
py'*
By Authority of the Environmental Management Commission

Permit NCO085979
SUPPLEMENT TO PERNUT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit
issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to
operate and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included
herein.
North Carolina Department of Transportation is hereby authorized to:
1. Continue to operate an existing groundwater remediation system consisting of direct discharge
of chloride contaminated groundwater located at NCDOT Rosman Maintenance Facility, 100
Old Calvert Landfill Road, Brevard NC, Transylvania County, and
2. Discharge from said treatment works at the location specified on the attached map into the
French Broad River, classified C-Trout waters in the French Broad River Basin.

Permit NCO085979
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Permit NCO085979
A. (1.) EFFLUENT LIMITATIONS AND MONITORING
During the period beginning on the effective date of this permit and lasting un "1 expir,
Permittee is authorized to discharge from outfall 001. Such discharges shall be limite.21
by the Permittee as specified below:
tored
Footnotes:
1. All volumes of wastewater leaving the facility shall be monitored.
2. Acute toxicity (Fathead Minnow) PassJFail at 90% during the months of January, April, July and October.
Samples for EPA Methods 624/625 should be collected at the same time as the acute toxicity test sample.
3. Chemicals that are to be monitored using an EPA approved method equivalent to the detection levels obtainable by
Method 624 and 625 or better are as follows: 2,4-Dinitrophenol, 2-Chloroethylvinyl ether, 3,3-Dichlorobenzidine,
4,6-Dinifro-2-methylphenol, 4 Nitrophenol, Acrolein, Acrylonitrile, Benzidine, Hexachlorocyclopentadine,
Pentachlorophenol and Toluene.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit NCO085979
A.(2.) ACUTE TOXICITY MONITORING (QUARTERLY)
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the
North Carolina Procedure Document entitled "Pass/Fail Methodology For Determining Acute Toxicity
In A Single Effluent Concentration" (Revised-July,1992 or subsequent versions). The monitoring shall
be performed as a Fathead Minnow (Pimephales promelas) 24 hour static test. The effluent
concentration at which there may be at no time significant acute mortality is 90% (defined as treatment
two in the procedure document). Effluent samples for self -monitoring purposes must be obtained
during representative effluent discharge below all waste treatment. The tests will be performed during
the months of January, April, July and October.
The parameter code for Pimephales promelas is TGE6C. All toxicity testing results required as part of
this permit condition will be entered on the Effluent Discharge Form (MR-1) for the month in which it
was performed, using the appropriate parameter code. Additionally, DWQ Form AT-2 (original) is to
be sent to the following address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Section
1621 Mail Service Center
Raleigh, N.C. 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no
later than 30 days after the end of the reporting period for which the report is made.
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 there be no discharge of flow from the facility during any month, the permittee will complete
the information located at the top of the aquatic toxicity (AT) test form indicating the facility name,
permit number, pipe number, county, and the month/year of the report with the notation of "No Flow"
in the comment area of the form. The report shall be submitted to the Environmental Sciences Section
at the address cited above.
Should any test data from either these monitoring requirements or tests performed by the North
Carolina Division of Water Quality indicate potential impacts to the receiving stream, this permit may
be re -opened and modified to include alternate monitoring requirements or limits.
If the Permittee monitors any pollutant more frequently then required by this permit, the results of such
monitoring shall be included in the calculation & reporting of the data submitted on the DMR & all AT
Form submitted.
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 follow-up testing to be completed no later than the last day of the month following
the month of the initial monitoring.

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0085979/NCDOT Rosman Maintenance Facility
Facility Information
Applicant/FacilityName:
NCDOT-Rosman Maintenance facility
Applicant Address:
4809 Beryl Road, Raleigh, NC 27606
Facility Address:
NCSR 1388
Permitted Flow
0.0288 MGD
Type of Waste:
100% Chloride contaminated Ground Water remediation — Road Salt storage
facility
Facili /Pemrit Status:
Active/ Renewal
County:
Transylvania
Miscellaneous
Receiving Stream:
French Broad River
Regional Office:
ARO
Stream Classification:
C-Trout
State Grid/
USGS Quad
G7NE
Rosman
303(d) Listed?
Yes, Statewide
impairment for H
Permit Writer:
Jim McKay
Subbasin:
04 03 01
Date:
December 20, 2011
Drainage Area (mil):
103 Miles
Summer 7Q 10 cfs
72
Winter 7Q10 (cfs):
86
Average Flow (cfs):
340
IWC (%):
0.06
Primary SIC Code:
495
SUMMARY
NCDOT operates a 0.0288 MGD Ground Water Remediation (GWR) facility which originally was covered under
General Permit # NCG510365. In 1992, a salt (chloride) pollution plume was detected in the groundwater <1 mile
from the former salt storage facility operated by the NCDOT. Monitoring of the plume was done from 1992-1998.
The highest contamination in GW occurred 10/19/95, 9950 mg/L in MW-3. The facility was not planning any
remediation; just pump it to the French Broad River. After performing an EAA in 1996, ARO suggested that the
facility pump the contaminated groundwater and discharge it into the French Broad River. On 10-2-96 the facility
was changed to an individual permit, NC0085979, that discharges into the French Broad River with monitoring
requirements.
The facility pumps from three (3) recovery wells contaminated with chlorides (road salt). The facility is required to
do monthly monitoring for flow, Chloride and pH. Quarterly monitoring is required for Chemicals - EPA Method
624/625 and Acute Tonicity (Fathead Minnow) Pass/Fail.
Originating in Transylvania County, the headwaters of the French Broad and Little Rivers are in Subbasin 04-03-01.
Most of this Subbasin is forested, and half of the land is protected as part of the Pisgah National Forest. According to
the EPA approved 2010 303(d) list for the French Broad River, there are approximately 43.4 miles of impaired
water, from Craggy Dam to the Tennessee State line. The waters are impaired for turbidity or for ecological/
biological integrity benthos in different sections, but do not include the Rosman discharge site.
TOXICITY TESTING:
Current Requirement: Acute P/F @ 90% (also recommended with renewal).
NCDOT Rosman Maintenance Facility GWR
NPDES NCO085979 Renewal
Page 1

COMPLIANCE SUMMARY: BASED ON THE PREVIOUS 2 YEARS
The facility has passed all 10 WET tests from January 2009 through March 2011.
Quarterly sampling utilizing EPA Methods 624/625 for chemical monitoring has not identified chemical pollutants
above North Carolina Water Quality Standards. All samples were below the reporting level. Quarterly sampling for
all parameters monitored on the previous permit will continue in this permit.
EPA 624/ 625 monitoring is not due to the chloride salts, but rather because there is an inactive coon landfill
adjacent to the DOT facility. Monitoring wells on the DOT site etected contamination from the andfill migra°d'ting
towards the area where groundwater pumping is taking place. Vinyl chloride, benzene, tetrachlo_roethene,
trichloroethene, and xylenes have been detected by the monitoring wells, but reportable Tevels have not been
detected in the GWR effluent.
RPA:
An EPA approved RPA was performed for chlorides. No Reasonable Potential to exceed state water quality
standards was found; no limit is required.
INSTREAM MONITORING:
Not in current permit. Not requested for renewal permit.
PERMIT CHANGES:
The Asheville Regional Office recommends that pH be monitored without the normal 6.0 - 9.0 S.U. limits because
the pH of groundwater in that area tends to be low naturally. A review of DMR data showed several instances of pH
in the 5.4 to 5.7 S.U. range. The discharge flowrate is very small compared to the river flow - the IWC is 0.06%; the
dilution factor is 1,603, so any pH variation would be very quickly overcome by the dilution of the river. The 2000
permit renewal did not have pH limits because of the low pH of groundwater. In the 2005 renewal, pH limits were
added. In the 2010/ 2011 renewal draft permit, the 6.0 - 9.0 limits were retained, but should be removed. Removing
the limits but retaining pH monitoring should be considered a minor modification, not requiring new public notice
due to provisions of 15A NCAC 02H .0114(b) (1).
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: October 12, 2011 (est.)
Permit Scheduled to Issue: December, 2011 (est.)
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please contact Jun McKay at
[phone], or by email at [e-mail].
NAME: DATE:
REGIONAL OFFICE COMMENT:
NAME: DATE:
NCDOT Rosman Maintenance Facility GWR
NPDES NCO085979 Renewal
Page 2

Table 1. Project Information
❑ CHECK if HQW Or ORW Only
Facility Name
W WTPMTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q1 Os (cfs)
7410w (cfs)
3002 (cfs)
GA (cfs)
1 Q1 Os (cfs)
Data Source(s)
❑ CHECK for MODEL
Freshwater RPA
0 REQUIRED DATA ENTRY
NC DOT Rosman Maintenance Facility
PC 1
NCO085979
001
0.029 — �—
French Broad River
C Trout
72.00
86.00
340.00
58.91
DMRs 2009 - 2011 YTD
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Par01
Par02
Par03
Par04
® Par05
Par08
Par07
Par08
Pares
Par10
Par11
Par12
Parts
Par14
Par15
Par16
Par17
Parts
Par19
Par20
Par21
Par22
Table 2. Parameters of Concern
Name J';e� Chronic Wj&' Acute POL Units
Arsenic
C
50
FW
ug/L
Arsenic
C
10
HH/WS
ug/L
Beryllium
NC
6.5
FW
ug/L
Cadmium
NC
2
FW
15
ug/L
Chlorides (AL)
NC
230
FW
mg/L
Chlorinated Phenolic Compounds
NC
1
A
ug/L
Total Phenolic Compounds
NC
300
A
ug/L
Chromium
NC
50
FW
1,022
ug/L
Copper (AL)
NC
7
FW
7.3
ug/L
Cyanide
NC
5
FW
22
10
ug/L
Fluoride
NC
1,800
FW
ug/L
Lead
NC
25
FW
33.8
uglL
Mercury
NC
12
FW
0.5
ng/L
Molybdenum
NC
2,000
HH
ug/L
Nickel
NC
88
FW
261
ug/L
Selenium
NC
5
FW
56
ug/L
Silver (AL)
NC
0.06
FW
1.23
ug/L
Zinc (AL)
NC
50
FW
67
ug/L
2011 RPA-Freshwater, input
12/20/2011

NC DOT Rosman Maintenance Facility REASONABLE POTENTIAL ANALYSIS
NCO085979
Qw (MGD) = 0.0288
WWTP/WTP Class: PC 1
1Q10S (cfs) = 68.91
IWC @ 1Q10S = 0.08%
7Q10S (cfs) = 72.00
1WC @ 7Q10S = 0.06%
7QIOW (cfs) = 86.00
IWC @ 7Q10W = 0.05%
30Q2 (cfs) = NO 3002 DATA
IWC @ 30Q2 = NIA
Avg. Stream Flow, QA (cfs) = 340.00
IWC @ QA = 0.01%
Receiving Stream: French Broad River
Stream Class: C Trout
Outfall 001
Qw = 0.0288 MGD .
CHRONIC TEST NIA ASSIGN 90% ACUTE TEST
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
2
Z
'
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied '/2 FAV /
Yl # Det. Max Pred Allowable Cw
Chronic Standard Acute
Cw
Acute: NO WQS
Chlorides (AL)
NC
230 FW(7Q 1 Os)
mg/L
29 29
3,520
_ _ _ _
Chronic: 83 333
_ _ _ _ _ _ _ _ _ _ _ _
r
._
o RP. Monitor but no limit
No value > Allowable w
2011 RPA-Freshwater, rpa
Page 1 of 1 12/20/2011

REASONABLE POTENTIAL ANALYSIS
ug/L
ugf-
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Date Data
Chlorides
BDL=1/2DL
Results
1600
1600
Sld Dev.
440.7403
1000
1000
Mean
946.6
1400
1400
C.V.
0.4656
1300
1300
n
29
710
710
1300
1300
Mult Factor =
1.8
1100
1100
Max. Value
2000.0 mg/L
1300
1300
Max. Fred Cw
3,520.0 mg/L
1000
1000
1200
1200
1300
1300
1100
1100
960
960
970
970
1000
1000
910
910
640
640
860
860
1000
1000
2000
2000
920
920
850
850
150
150
210
210
960
960
1100
1100
110
110
120
120
380
380,
_2_
2011 RPA-Freshwater, data
12/20/2011

AFFIDAVIT OF PUBLICATION
CLIPPING OF LEGAL ADVERTISING
ATTACHED HERE
PUBLIC NOTICE
NORTH CAROLINA
ENVIRONMENTAL
MANAGEMENT
COMMISSION/NPDES
UNIT 1617 MAIL
SERVICE CENTER
RALEIGH,NC
27699-1617
NOTICE OF INTENT
TO ISSUE A NPDES
WASTEWATER'.
PEANUT
The North Carolina
Environmental
Management Commission
proposes to issue a NPDES
wastewater discharge per-
mit to the persoh(s) listed
below.
Written comments regard-
ing the proposed permit
will be accepted until 30
days after the publish date
of this notice. The Director
of the N.C. Division of
Water Quality (DWQ) may
hold a public hearing
should there be a signifi-
cant degree of public inter-
est. Please mail comments
and/or information requests
to DWQ at the above
address. Interested persons
may visit the DWQ at 512
N. Salisbury Street,
Raleigh. NC to review
inforration on file.
Additional information on
NPDES permits and this
potice may be found on our
website: hap://portal.
kcdenr.org/web/wq/swp/psl
des/calendar, or by call-
g [phone],
Notch Carolina DOT has
applied for renewal of its
Rosman Maintenance
,Facility permit number
iNC0085979. Discharge
;from the Ground water
emediation facility in to
e French Broad River /
French Broad River Basin.
M10/17/ITC
NORTH CAROLINA
TRANSYLVANIA COUNTY
Before the undersigned, a Notary Public of said
County and State, duly commissioned, qualified, and
authorized by law to administer oaths, personally
appeared SeanA. Trapp who being first duly sworn,
deposes and says: that he is Operations Manager
(Owner, partner, publisher, or other officer or
employee authorized to make this affidavit) of The
Transylvania Times, published, issued, and entered
as second class mail in the Town of Brevard in said
County and State; that he is authorized to make this
affidavit and sworn statement; that the notice or
other legal advertisement, a true copy of which is
attached hereto, was published in The Transylvania
Times on the foll4owing dates:
October 17, 2011
and that the said newspaper in which such notice,
paper, document, or legal advertisement was
published was, at the time of each and every such
publication, a newspaper meeting all of the
requirements and qualifications of Section I-597 of
the General Statutes of North Carolina and was
qualified newspaper within the meaning of Section
I-597 of the General Statutes of North Carolina.
Thisy36"—day of MW4Pv 2011.
(Signature of pe n making affidavit)
Sworn to and subscribed before me, this�4_
day of �t tZJL v"1 _AJ , 2011.
,i . �" 1 ILL--
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NOTA
TransylvaCounty,
My Commlasio