NCS000360_Fact sheet binder_20230110

DEQ / DEMLR
FACT SHEET FOR NPDES INDUSTRIAL INDIVIDUAL
STORMWATER PERMIT DEVELOPMENT
Basic Information for Permit Issuance and Renewals:
Permit Writer / Date
Brianna Young 1/10/2023
Permit Number
NCS000360
Owner / Facility Name
NIEHS / NIEHS
SIC (NAICS) Code / Category
9199 (923120) / Administration of Public
Health Programs
Basin Name / Sub -basin number
Ca e Fear / 03-06-05
Receiving Stream / HUC
UT to Burdens Creek / 030300020605
Stream Classification / Stream Segment
WS-V; NSW / 16-41-1-17-1- 0.3
Is the stream impaired on 303 d list]?
No
Any TMDLs?
No
Any threatened and/or endangered species?
See Section 2 below
Any compliance concerns?
See Section 2 (below)
Any permit mods since lastpermit?
See Section 1 below
New expiration date
2/29/2028
Comments on Draft Permit?
See Section 6 below
Section 1. Facility Activities and Process:
The National Institute of Environmental Health Sciences (NIEHS) is a federal agency
that researches how the environment affects people. NIEHS performs research in onsite
labs, facilities, and grant programs that support offsite research at universities, hospitals,
businesses, and other organizations. Building 108 Waste Handling Facility is the
industrial acidity that triggers the requirement for permit coverage.
Per the 2010 fact sheet, onsite activities include:
• Health and Environmental Health Research
• Onsite labs perform research on diseases and environmental stressors (many
chemicals onsite)
• Current and past research includes:
o Lung disease
o Breast cancer
o Human development and reproduction
o The National Toxicology Program
o Report on Carcinogens
o Lead
o Cancer
o PCBs
o Diethylstilbestrol (DES)
o Asbestos
o Benzene
o Cadmium
o Alzheimer's Disease
o Immune function
o Pesticide exposure
Page 1 of 16

The 2010 fact sheet also states that outfall paths and discharges to the areas are:
• Roof drain discharges directly to storm drains underground to the NIEHS lake
• Haz waste areas go to a trench drain
• Oil water separator is piped to the NIEHS lake
• Retention pond: The lake and retention pond were to slow down water that came
from the roof drains to 105 and 106; some of the roof drains go to that pond and
the drainage ditch
• The intermittent stream from the retention pond was water trickling out of the
pond going into the lake and is looked at twice a year during the semi-annual
inspections.
Since the last permit renewal, the following operational changes have occurred:
• 2010 — A sulfuric acid (50%) storage tank with a 500-gallon capacity was
installed inside Building 105. The sulfuric acid is used as part of a reverse
osmosis water treatment process. Deliveries occur about 2 or 3 times per year and
are limited to 375 gallons each. The storage tank is double walled for secondary
containment purposes. Supplies for responding to corrosive acid spills are stored
at this site.
• 2016 — A diesel -fueled emergency generator with a 1,600-gallon base tank was
installed on the NIEHS Campus just south of Building 102. Deliveries are
infrequent and the base tank is double walled for secondary containment
purposes. The 2,000-gallon capacity E85 (85% ethanol / 15% gasoline)
aboveground storage tank and associated fuel dispensing station was removed
from the NIEHS Campus. Tanker truck deliveries of E85 ended in 2010.
• 2017 — The Building 110 Warehouse became operational in July 2017.
Warehouse activities include shipping and receiving via ground transport. There
are no industrial activities at this site. A diesel -fueled emergency generator with a
500-gallon base tank provides backup power at the warehouse. Fuel deliveries are
infrequent, and the base tank is double walled for secondary containment
purposes. Spill supplies are stored at this location. The 300-gallon capacity diesel
fuel tank and associated emergency generator was removed from the east side of
Building 102.
• 2018 - A brine solution (sodium chloride) tank with a 3,400-gallon capacity was
installed to support a centralized water softening system in the Building 105
central utility plant. The tank is located outside, southwest of Building 105, in a
concrete secondary containment basin that has a capacity of about 3,700 gallons.
The containment release valves are kept locked except during drainage events.
Rainwater is evaluated for conductivity before each drainage event. Deliveries
occur about two or three times per year.
• 2019 — A diesel -fueled emergency generator with a 137-gallon base tank was
installed on the NIEHS Campus near the Main Entrance Guardhouse. Deliveries
are infrequent and the base tank is double walled for secondary containment
purposes. Spill supplies are stored at this location.
Per an email from 6/27/2022, NIEHS has requested representative outfall status (ROS) to
reduce the number of visual monitoring outfalls. The SW003-SW008 drainage areas
include employee parking lots and building loading docks (receive facility equipment,
Page 2 of 16

cafeteria deliveries, and lab and office supplies). These outfalls are located away from the
industrial activities associated with the Building 108 (SW001) Waste Handling Facility
(WHF).
• DEQ response: Requests for representative outfall status (ROS) are handled
through a different process outside the permit renewal review. If you wish to
request ROS for any outfalls, please follow the instructions on our website:
h!Ltps:Hdeg.nc.gov/about/divisions/energy-mineral-and-land--
resources/stormwater/stormwater-pro-ra�m/npdes-industrial-pro _gram.
Per an email dated 6/27/2022, the NIEHS stormwater discharge outfalls were selected
during an early 2011 site visit by DEQ staff. Outfalls SW001, SW002, and SW003 were
considered to be associated with industrial activity and therefore triggered analytical and
visual monitoring. The remaining five outfalls (SW004-SW008) were designated as
visual monitoring only since there are no industrial activities in these drainage areas.
Outfall SW003 was granted ROS since the apparent industrial activity, which is the
Building 104 warehouse, was repurposed for long term storage with infrequent material
deliveries.
Per the email dated 6/27/2022, the NIEHS is operating a warehouse (Building 110) for
routine shipping and receiving on the north end of the campus. Although on the same
property, the warehouse has a different address (105 TW Alexander Drive) from the
Main Campus, is located in a separate watershed, and is not connected to the internal
road network. There are no regulated industrial activities and no exposed materials at this
site. The road network, trash dumpster, C&D dumpster, loading dock, and emergency
generator fuel oil tank are reviewed as part of the semiannual stormwater inspection;
however, monitoring has not been performed due to the distance from the waste handling
facility.
Outfall SW001:
Drainage area includes Building 108 / Waste Handling Facility (WHF) loading dock for
chemical waste shipping and receiving activities. This outfall discharges stormwater into
a UT to NIEHS/ Discovery Lake through the dam into a UT to Burdens Creek.
Outfall SW002:
Drainage area includes Building 105 / boiler plant fuel oil, sulfuric acid, water treatment
chemical delivery areas, incinerator plant deliveries, contractor parking lots, and the
WHF structure. This outfall discharges stormwater into a UT to NIEHS/ Discovery Lake
through the dam into a UT to Burdens Creek
Outfall SW003:
Drainage area includes Building 104 warehouse loading dock and emergency generator
fuel oil tank (infrequent deliveries). No industrial activity occurs.
Outfall SW004:
Drainage area includes Buildings 102 and 103 loading docks for delivery of facility
equipment, paper records, office supplies. No industrial activity occurs.
Page 3 of 16

Outfall SW005:
Drainage area includes Building 101 A -Dock loading dock for delivery of cafeteria
supplies and facility equipment. No industrial activity occurs.
Outfall SW006:
Drainage area includes South Parking Lot/employee vehicle parking lot. No industrial
activity occurs.
Outfall SW007:
Drainage area includes North Parking Lot/employee vehicle parking lot. No industrial
activity occurs.
Outfall SW008:
Drainage area includes Building 101 F and loading docks for deliveries of facility
equipment, office supplies, lab supplies along with chemical waste pick-up. No industrial
activity occurs.
Why Industrial Sites with Stormwater are Subject to a Permit: Federal NPDES
regulations define stormwater discharge associated with industrial activity in 40 CFR
§ 122.26 (b)(14) as: "the discharge from any conveyance that is used for collecting and
conveying storm water and that is directly related to manufacturing, processing or raw
materials storage areas at an industrial plant. The term does not include discharges from
facilities or activities excluded from the NPDES program under this part 122. For the
categories of industries identified in this section, the term includes, but is not limited to,
storm water [sic] discharges from industrial plant yards; immediate access roads and rail
lines used or traveled by carriers of raw materials, manufactured products, waste
material, or byproducts used or created by the facility; material handling sites; refuse
sites; sites used for the application or disposal of process waste waters (as defined at part
401 of this chapter); sites used for the storage and maintenance of material handling
equipment; sites used for residual treatment, storage, or disposal; shipping and receiving
areas; manufacturing buildings; storage areas (including tank farms) for raw materials,
and intermediate and final products; and areas where industrial activity has taken place in
the past and significant materials remain and are exposed to storm water. For the
purposes of this paragraph, material handling activities include storage, loading and
unloading, transportation, or conveyance of any raw material, intermediate product, final
product, byproduct or waste product. The term excludes areas located on plant lands
separate from the plant's industrial activities, such as office buildings and accompanying
parking lots as long as the drainage from the excluded areas is not mixed with storm
water [sic] drained from the above described areas."
Section 2. Monitoring Information and Compliance History:
Per an inspection report dated 6/22/2010, the facility had 3 outfalls but ROS had been
granted so only the outfall at building 108 was being monitored. Per the 2010 permit fact
sheet, the outfall discharged to the NIEHS Lake 4 Burdens Creek 4 Northeast Creek.
Northeast Creek had a TMDL for fecal coliform and was on the 2010 303(d) list for
Aquatic Life due to copper, turbidity, and low DO. Jordan Lake had a TMDL for
Page 4 of 16

chlorophyll -a and the Jordan Lake Watershed had a TMDL for total nitrogen and total
phosphorus.
Per a letter dated 3/12/2018, DEQ granted ROS for SW001 and SW002 to represent
SW003. Currently, SW003 (Building 104), SW004 (Building 103), SW005 (A -Dock),
SW006 (South Lot), SW007 (North Lot), and SW008 (F-Module) have visual monitoring
only.
The discharge location is approximately 1.5 miles upstream of the confluence with
Northeast Creek, which is classified WS-IV; NSW [Stream Index: 16-41-1-17-(0.7)a] and
has a TMDL for fecal coliform.
Threatened/Endangered Species
There are no threatened/endangered species at the location of discharge, however, in the
vicinity of the discharge there are: American Bluehearts (Buchnera americans; NC
status: E), Earle's Blazing -star (Liatris squarrulosa; NC status SR-P), Regal Darner
(Coryphaeschna ingens; NC status: SR), Veined Skullcap (Scutellaria nervosa; NC
status: E), Indian Physic (Gillenia stipulate; NC Status T), and Douglass's Bittercress
(Cardamine douglassii; NC status: SR-P).
Compliance history follows:
• February 2011 to January 2022, benchmarks exceeded for (monitoring data
provided for only 1 outfall):
o Aluminum:l3x
o BOD:3x
o COD:2x
o TN: Ix
o TP:lx
• Per letter dated 8/8/2014, SW003 was in Tier 1 status for aluminum
• Per letter dated 3/6/2015, SW001 was in Tier 1 status and SW003 was in Tier 2
status for aluminum
• Per letter dated 5/19/2015, SW003 was in Tier 2 status for aluminum
• Per letter dated 1/7/2016, SW003 was in Tier 1 status for aluminum
• Per letter dated 8/19/2016, SW001 was in Tier 1 status for aluminum
• Per letter dated 7/25/2017, SW001 and SW003 were in Tier 1 status for aluminum
• Per letter dated 2/27/2018, SW001 was in Tier 2 status and SW002 was in Tier 1
status for aluminum
• Per letter dated 1/4/2019, SW001 was in Tier 1 status for BOD
• Per letter dated 4/22/2019, SW001 was in Tier 1 status for COD and aluminum
and Tier 2 status for BOD, and SW002 was in Tier 1 status for BOD and COD
• Per letter dated 6/28/2019, SW001 was in Tier 2 status for BOD
• Per letter dated 8/14/2019, SW001 was in Tier 2 status for BOD
• Per letter dated 1/10/2020, SW002 was in Tier 1 status for total nitrogen and total
phosphorus
Tier responses (provided by the permittee on the renewal application) follow:
Page 5 of 46

Tier One Reporting (Outfall #1)
Sample
Location
Parameter
Result
Tier One Response
Date
Building
Possible Cause: Excess soil in the stormwater conveyance
2/28/2011
108 Outfall
Aluminum
3.61 m /L
system
Preventative Measures: Removed excess soil along curbing
upstream from Bldg 108 outfall
Tier Two Reporting (Outfall #1)
Sample
Date
Location
Parameter
Result
Tier Two Response
Building
Possible Cause: Residual soil in the stormwater conveyance
8/27/2011
108 Outfall
Aluminum
1.02 mg/L
system
Selected Action: Evaluate BMPs including stormwater drain
inserts
November sample above benchmark; Samples indicate Bldg 108
is not the aluminum source
December and January samples less than benchmark
February sample above benchmark / Requested outfall evaluation
March (April) and April samples less than benchmark
May, June (Storm drain filter installed), July (Storm drain filter
installed), and August (September) (Filter removed) samples
above benchmark
September (November), October (December), and November
(December) samples less than benchmark; Monthly monitoring
no longer required
Tier One Reporting (Outfall #1)
Sample
Location
Parameter
Result
Tier One Response
Date
Building
Possible Cause: Excess sand in the stormwater conveyance
2/7/2013
108 Outfall
Aluminum
0.894 m /L
system from treating icy roads
Selected Action: Collected soil & sand samples on 06/29/2011;
Results indicate sand used to treat icy roads contains aluminum
Preventative Measures: Assure that sand is only applied to
roads when needed to treat actual icy conditions. Also, remove
roadside sediment buildup along the Power Alley curb as needed.
Tier One Reporting (Outfall #2)
Sample
Location
Parameter
Result
Tier One Response
Date
Building
Possible Cause: Residual sand in the Building 102 contractor
2/7/2013
105 Outfall
Aluminum
0.954 m L
parking lot from treating icy roads
Selected Action: Collected soil & sand samples on 06/29/2011;
Results samples indicate that sand used to treat icy roads contains
aluminum
Preventative Measures: Assure that sand is only applied to
roads when needed to treat actual icy conditions
Page 6 of 16

Tier One Reporting (Outfall #3)
Sample
Date
Location
Parameter
Result
Tier One Response
7/15/2014
Building
104 Outfall
Aluminum
0.789 m /L
Possible Cause: Soil erosion from heavy rainfall event (3.52")
Selected Action: Collected soil & sand samples on 06/29/2011;
Results samples indicate that area soils contain aluminum
Preventative Measures: Verified that sediment is not building
up in the stormwater conveyance system upstream from the
sampling point. Aluminum levels above the benchmark at this
outfall are considered to be an isolated event
Tier One Reporting (Outfall #1)
Sample
Location
Parameter
Result
Tier One Response
Date
Building
Possible Cause: Excess sand in the stormwater conveyance
2/9/2015
108 Outfall
Aluminum
1.000 m /L
system from treating icy roads
Selected Action: Collected soil & sand samples on 06/29/2011;
Results indicate that sand used to treat icy roads contains
aluminum
Preventative Measures: Assure that sand is only applied to
roads when needed to treat actual icy conditions. Also, remove
roadside sediment buildup along the Power Alley curb as needed.
Tier Two Reporting (Outfall #3)
Sample
Date
Location
Parameter
Result
Tier Two Response
Building
Possible Cause: Excess sand in the stormwater conveyance
2/9/2015
104 Outfall
Aluminum
2.13 m /L
system from treating icy roads
Selected Action: Begin monthly samples for aluminum in April
2015
Consider study of downstream aluminum levels
April sample above benchmark
05/18/2015 - Reinspected curbside and road surfaces upstream
from the Building 104 outfall. Very little sand and sediment
remains upstream of this outfall. Street cleaning is not required at
this time.
May, June, and July samples below benchmark; Monthly
monitoring no longer required
Tier Two Monthly Sampling (Outfall #3)
Sample
Location
Parameter
Result
Tier Two Response
Date
Building
4/30/2015
104 Outfall
Aluminum
5.090 m /L
Aril sample above benchmark
May, June, and July samples less than benchmark; Monthly
monitoring no longer required
Page 7 of 16

Tier One Reporting (Outfall #3)
Sample
Date
Location
Parameter
Result
Tier One Response
12/17/2015
Building
104 Outfall
Aluminum
1.63 m /L
Possible Cause: Soil erosion from heavy rainfall event (1.05")
Selected Action: Collected soil & sand samples on 06/29/2011;
Results indicate that area soils contain aluminum
Preventative Measures: Verified that sediment is not building
up in the stormwater conveyance system upstream from the
sampling point. Aluminum levels above the benchmark at this
outfall are considered to be an isolated event
Tier One Reporting (Outfall #1)
Sample
Location
Parameter
Result
Tier One Response
Date
Building
Possible Cause: Soil erosion from previous heavy rain events?
7/30/2016
108 Outfall
Aluminum
4.98 mg/L
Selected Action: Collected soil & sand samples on 06/29/2011;
Results indicate that area soils contain aluminum
Preventative Measures: Continue visually monitoring roadside
for buildup of soil and sand. Request removal if warranted.
Tier One Reporting (Outfall #1)
Sample
Location
Parameter
Result
Tier One Response
Date
6/24/2017
Building
108 Outfall
Aluminum
2.23 m /L
Possible Cause: Soil erosion from heavy rain event
Selected Action: Collected soil & sand samples on 06/29/2011;
Results indicate that area soils contain aluminum
Preventative Measures: Continue visually monitoring roadside
for buildup of soil and sand. Submitted work order request to
remove sand/soil buildup upstream from Outfall #1.
Tier One Reporting (Outfall #3)
Sample
Date
Location
Parameter
Result
Tier One Response
Possible Cause: Soil erosion from heavy rainfall event / possible
Building
source is C & D dumpster stationed in Building 104 loading dock
6/24/2017
104 Outfall
Aluminum
2.31 m /L
area for renovation project.
Selected Action: Collected soil & sand samples on 06/29/2011;
Results indicate that area soils contain aluminum
Preventative Measures: Verified that sediment is not building
up in the stormwater conveyance system upstream from the
sampling point. Aluminum levels above the benchmark at this
outfall are considered to be an isolated event. C & D dumpster
should be removed from site after renovation project completion.
Tier One Reporting (Outfall #2)
Sample
Location
Parameter
Result
Tier One Response
Date
Building
Possible Cause: Excess sand in the stormwater conveyance
1/28/2018
105 Outfall
Aluminum
0.869 m L
system from treating icy roads
Page 8 of 16

Selected Action: Collected soil & sand samples on 06/29/2011;
Results indicate that area soils contain aluminum
Preventative Measures: Verified that sediment is not building
up in the stormwater conveyance system upstream from the
sampling point. Aluminum levels above the benchmark at this
outfall are considered to be an isolated event.
Tier Two Reporting (Outfall #1)
Sample
Location
Parameter
Result
Tier Two Response
Date
Building
Possible Cause: Excess sand in the stormwater conveyance
1/28/2018
108 Outfall
Aluminum
1.76 m /L
system from treating icy roads
Selected Action: Collect receiving water samples for aluminum
to determine downstream impacts.
Preventative Measures: Inspection revealed that some sand
remains along the roadway, which may have increased levels of
aluminum in stormwater
Tier Two Reporting (Outfall #1)
Sample
Location
Parameter
Result
Tier Two Response
Date
Building
Possible Cause: Natural aluminum source upstream and
5/22/2018
108 Outfall
Aluminum
0.585 m /L
downstream from NIEHS outfalls
Building
Selected Action: Collect receiving water samples for aluminum
105 Outfall
Aluminum
1.990 m /L
to determine downstream impacts.
Preventative Measures: Landscaping team thoroughly removed
108/ #1
sediment from upstream areas using blowers and brushes and
Downstream
Aluminum
2.800 m /L
flushed naturally with multiple rain events prior to sampling
Receiving water sampling results: Sampling indicates natural
1051 #2
aluminum source since concentrations increased with distance
Downstream
Aluminum
4.290 m /L
from outfall
Merged
Notified NCDEQ that monthly sampling would be discontinued
Stream
Aluminum
5.730 m /L
as per receiving water study agreement.
Tier One Reporting (Outfall #1)
Sample
Location
Parameter
Result
Tier One Response
Date
Building
Possible Cause: Unknown, this is the first time BOD has
12/20/2018
108 Outfall
BOD
44 m L
exceeded benchmark
Selected Action: Visual inspection
Preventative Measures: Keep leaves and vegetative material
from entering sample bottles
Tier Two Reporting (Outfall #1)
Sample
Location
Parameter
Result
Tier Two Response
Date
Building
Possible Cause: Observed high levels of pollen in stormwater
4/2/2019
108 Outfall
BOD
140 m /L
sample
Selected Action: Begin monthly samples in May 2019
Preventative Measures: Avoid collecting samples from mid -
March through late April when pollen count is high
Page 9 of 16

June, July, and August samples less than benchmark; Monthly
monitoring no longer required
Tier One Reporting (Outfall #2)
Sample
Location Parameter
Result
Tier One Response
Date
Possible Cause: Observed high levels of pollen in stormwater
4/2/2019
Outfall #2 BOD
100 mg/L
sample
Selected Action: Visual inspection
Preventative Measures: Avoid collecting samples from mid -
March through late April when pollen count is high
Tier One Reporting (Outfall #1 & #2)
Sample
Location
Parameter
Result
Tier One Response
Date
Possible Cause: Observed high levels of pollen in stormwater
4/2/2019
Outfall #1
COD
360 m /L
sample
4/3/2019
Outfall #2
COD
200 m /L
Selected Action: Visual inspection
Preventative Measures: Avoid collecting samples from mid -
March through late April when pollen count is high
Tier One Reporting Outfa11 #2
Sample
Date
Location
Parameter
Result
Tier One Response
Possible Cause: Unknown, this is the first time Nitrogen and
12/17/2019
Outfall #2
Nitrogen
170 m /L
Phosphorus have exceeded benchmark
Outfall #2
Total Phos
2.3 m /L
Selected Action: Visual inspection and personnel interview
Preventative Measures: Site inspection did not reveal evidence
of fertilizer spill or other chemical release. Interviewed ORF
landscaping COR and ORF 102 retaining wall and 105 concrete
drive construction project COR. Neither were aware of any
events that could have contributed to elevated stormwater
nitrogen and phosphorus at Outfall #2. Requested that both
CORs remind their contractors about spill response procedures
for petroleum and other chemicals including fertilizer
Section 3. Proposed Monitoring for Stormwater Discharges:
The Division considered potential pollutants from past and present industrial activities
and data was submitted for February 2011 to January 2022. Quantitative sampling
included pH, aluminum, BOD, COD, oil & grease, total nitrogen, total phosphorus, EPA
method 624, and EPA method 625.
Unlike most stormwater permits in its program, the Division is proposing a permit
structure with outfall-specific monitoring for discharges. Parameters are based on
potential pollutants in the drainage area, sampling results, and in some cases, dependent
upon future activities (e.g., ash removal through the drainage area). Below is a table of
the proposed monitoring for each outfall at the NIEHS site.
Page 10 of 16

Outfalls
SW001, SW002, SW003, and SWO08
Quarterly monitoring
Total Suspended Solids
BASIS: Potential pollutant from drainage area and BMP
(TSS)
effectiveness indicator.
Quarterly monitoring
pH
BASIS: Pollutant indicator.
Quarterly monitoring
Total Rainfall
BASIS: Discharge potential indicator
Quarterly monitoring
Non -Polar Oil &Grease
BASIS: Potential pollutant from lubricants; Method 1664
SGT-HEM targets petroleum -based O&G
Quarterly monitoring
Monthly Oil Usage
BASIS: Potential pollutant from drainage area
Quarterly monitoring
BOD
BASIS: Discharge potential indicator
Quarterly monitoring
COD
BASIS: Discharge potential indicator
Quarterly monitoring
Total Aluminum
BASIS: Discharge potential indicator
Quarterly monitoring
Total Nitrogen
BASIS: Discharge potential indicator
Quarterly monitoring
Total Phosphorus
BASIS: Discharge potential indicator
Quarterly monitoring
EPA Method 624
BASIS: Discharge potential indicator
Quarterly monitoring
EPA Method 625
BASIS: Discharge potential indicator
Stormwater Benchmarks and Tiered Response: Rather than limits, North Carolina
NPDES Stormwater permits contain benchmark concentrations. Stormwater benchmarks
are numerical action levels for stormwater monitoring. Benchmarks are not effluent
limits, and benchmark exceedances are not permit violations. Benchmarks provide
facilities a tool for assessing the significance of pollutants in stormwater discharges and
the effectiveness of best management practices (BMPs). Benchmark concentrations are
intended as guidelines for the facility's development and implementation of the
Stormwater Pollution Prevention Plan (SWPPP).
Page 11 of 16

Benchmark exceedances require the permittee to increase monitoring, increase
management actions, increase record keeping, and/or install stormwater BMPs in a tiered
program. The permit establishes a tiered approach to specify actions the permittee must
take in response to analytical results above benchmark concentrations. The tiered
structure of the permit provides the permittee and DEMLR wide flexibility to address
issues that may arise with one or more parameters and/or outfalls.
Metals benchmarks are calculated to mimic acute water quality standards and with the
guidance of DWR. NC DWR follows established federal procedures for calculating acute
standards when developing the benchmarks. Just like the acute standards, metals
benchmarks normally reflect one half of the calculated Final Acute Value (the "1/2
FAV"). In most cases, translation into total recoverable values is based on an assumed
hardness of 25 mg/L and a total suspended solids (TSS) concentration of 10 mg/L. Acute
standards protect aquatic life from negative impacts of short-term exposure to higher
levels of chemicals where the discharge enters a waterbody. The Stormwater Permitting
Program applies this approach because of the ephemeral nature of rainfall events.
The Division may evaluate results to determine if a smaller suite of parameters for some
outfalls is adequate to characterize potential pollution or BMP effectiveness. For
example, one or more metals or other parameters may serve as an adequate tracer for the
presence of ash pollution during disturbance or ash removal in specific drainage areas at
this site. For parameters that do not have a stormwater benchmark, the Division may
develop a benchmark value if appropriate toxicity data become available or if rising
trends in concentrations suggest a persistent source.
A summary of the benchmarks in the draft permit, and their basis, is below:
Parameter
Benchmark
Basis
BOD
30 mg/L
BPJ; Based on Secondary Treatment Regulation
40 CFR 133.03
COD
120 mg/L
BPJ; Generally found at levels 4x BOD5 in
domestic wastewaters
1/2 FAV (Final Acute Value); EPA's National
Aluminum
750 µg/L
Recommended Water Quality Criteria (Acute) for
aluminum
Total Nitrogen
30 mg/L
TKN + Nitrate + Nitrite Benchmarks (Expressed
in m /L of N
Total Phosphorus
2 mg/L,
BPJ; Based on wastewater permit limits for
NSW waters
Benzene (EPA
6,700 µg/L
1/2 FAV derived from EPA's ECOTOX Database
Method 624
From NC 2B Std. (I I µg/1), based on April 1986
DWQ Internal Report: NC Dept. NRCD,
Toluene (EPA
55 µg/L
Division of Environmental Management. No -
Method 624)
effect chronic levels for aquatic toxicity:
Organic compounds found near Ashland
Chemical Site in Raleigh, NC.
Anthracene (EPA
5 µg/L
1/2 FAV derived from EPA's ECOTOX Database
Method 625
Page 12 of 16

Pentachlorophenol
'/2 FAV @ pH 7.8, CMC from EPA's 1995
(EPA Method 625)
19 µg/L
Update to Ambient Water Quality Criteria for
Pentachloro henol
Total Suspended
100 mg/L
National Urban Runoff Program (NURP) Study,
Solids (TSS)
1983
H
6 s.u. — 9 s.u.
NC Water Quality Standard (Range)
Non -Polar Oil &
Review of other state's daily maximum
Grease, EPA
15 mg/L
benchmark concentration for this more targeted
Method 1664
O&G; NC WQS that does not allow oil sheen in
SGT-HEM
waters
Stormwater Pollution Prevention Plan: The proposed permit conditions reflect the
EPA and NC's pollution prevention approach to stormwater permitting. The Division's
maintains that implementation of Best Management Practices (BMPs) and traditional
stormwater management practices that control the source of pollutants meets the
definition of Best Available Technology (BAT) and Best Conventional Pollutant Control
Technology (BCT). The permit conditions are not numeric effluent limitations but are
designed to be flexible requirements for implementing site -specific plans to minimize and
control pollutants in stormwater discharges associated with the industrial activity. Title
40 Code of Federal Regulations (CFR) § 122.44(k)(2) authorizes the use of BMPs in lieu
of numeric effluent limitations in NPDES permits when the agency finds numeric
effluent limitations to be infeasible. The agency may also impose BMP requirements
which are "reasonably necessary" to carry out the purposes of the Act under the authority
of 40 CFR 122.44(k)(3). The conditions proposed in this draft permit are included under
the authority of both of these regulatory provisions. In essence, the pollution prevention
and BMP requirements operate as limitations on effluent discharges that reflect the
application of BAT/BCT.
Flexibility in Tier Responses: Tier Two actions provide an opportunity for the permittee
to propose an alternative monitoring plan for approval by the Region:
• Alternatively, in lieu of steps 2 and 3, the permittee may, after two consecutive
exceedances, exercise the option of contacting the DEMLR Regional Engineer as
provided below in Tier Three. The Regional Engineer may direct the response
actions on the part of the permittee as provided in Tier Three, including reduced
or additional sampling parameters or frequency.
• If pursuing the alternative above after two consecutive exceedances, the permittee
may propose an alternative monitoring plan for approval by the Regional
Engineer.
The permit therefore allows the permittee to petition the Regional Office for monitoring
changes sooner than Tier Three (upon any four benchmark exceedances) and gives
guidance on one option to take. For example, the permittee may request that mercury
only be monitored semi-annually under the tiers, or that only parameters over the
benchmark be monitored more frequently. In this way, changes to the monitoring scheme
for any outfall could be handled outside of a permit modification.
Other Proposed Requirements:
• It is standard for Stormwater Pollution Prevention Plan (SWPPP) requirements to
include an annual certification that stormwater outfalls have been evaluated for
Page 13 of 16

the presence of non-stormwater discharges, and if any are identified, how those
discharges are permitted or otherwise authorized.
• Requirement to submit a request for permit modification if the facility identifies
or creates any new outfalls, removes outfalls, or alters any drainage area that
changes potential pollutants.
• The Division expects the permittee to apply best professional judgment and
consider the safety of its personnel in fulfilling sampling obligations under the
permit.
• Federal regulations require electronic submittal of all discharge monitoring
reports (DMRs). If a state does not establish a system to receive such submittals,
then permittees must submit DMRs electronically to the EPA.
• Quarterly QualitativeNisual Monitoring to assure regular observation of outfalls
throughout year.
Section 4. Changes from previous permit to draft:
• Monitoring increased from semi-annually to quarterly for all parameters
(qualitative and quantitative)
• "No discharge" clarifications made
• 'No
requirement added
• Boilerplate language moved into body of the permit; boilerplate no longer
attached
• Benchmarks updated for parameters per guidance from DWR Standards group on
stormwater benchmarks
Section 5. Changes from draft to final:
• None
Section 6. Discussions with the Facility and Regional Office:
• Initial contact with facility: 4/14/2022
• Initial contact with Regional Office: 6/13/2022
• Draft sent to CO peer review: 7/25/2022 (not completed due to change in review
process)
• Draft sent to Regional Office: 11/9/2022
• Final permit sent for supervisor signature: 1/10/2023
Section 7. Comments received on draft permit:
• Shawn Guyer (PWS RRO; via email 11/23/2022): I concur with the issuance of
this permit provided the facility is operated and maintained properly, the stated
effluent limits are met prior to discharge, and the discharge does not contravene
the designated water quality standards.
Page 14 of 16

• Bill Steinmetz (NIEHS; via email 12/14/2022)
o The Building 108 Waste Handling Facility (WHF) is the industrial activity
that triggers individual stormwater permitting in accordance with 40 CFR
122.26(b)(14)(iv): Hazardous waste treatment, storage, and disposal
(TSD) facilities. Can language be added to the permit to specifically
identify the regulation and the activity [Building 108 Waste Handling
Facility (WHF)] that triggers the requirement for NIEHS to have a
stormwater permit?
■ DEMLR response: This is not a standard inclusion into
stormwater permits. However, this note can be made in the permit
fact sheet so it is documented in the permit file.
o The number of outfalls with sampling requirements increased from two to
four. The NIEHS believes that two sampling sites (Outfalls SW001 and
SW002) are sufficient for monitoring stormwater around the Building 108
WHF. Can the number of sampling outfalls be reduced during this
comment period or is applying for Representative Outfall Status (ROS) the
required approach?
■ DEMLR response: Applying for Representative Outfall Status is
the correct approach. Complete the Representative Outfall Status
(ROS)Request Form, mail one hard copy and supporting
documents to the appropriate Regional Office (see form) and e-
mail the form and supporting documents to Bethany og ulias.
o Analytical monitoring frequency increases from semiannual to quarterly in
the draft permit. Has quarterly sampling become the standard for all
individual permit holders? If not, then NIEHS requests continuation of the
current semiannual sampling frequency. Note that all NIEHS sampling
results have met benchmark guidelines for the last three years, which
supports maintenance of the existing sampling frequency.
■ DEMLR response: The Stormwater Permitting Program is in the
process of transitioning individual permits to quarterly monitoring.
This is a standard permitting requirement.
o Can you provide the rationale for adding Total Suspended Solids (TSS) to
the list of sampling requirements? Building 108 WHF is not a construction
zone nor are any activities performed there that would cause an increase in
TSS. Since the permit is due to that facility then only activities taking
place in that facility should be monitored. Also, are there opportunities to
reduce the number of sampling parameters based on adherence to
benchmarks?
■ DEMLR response: Monitoring for TSS is a standard monitoring
requirement of all individual stormwater permits. Monitoring
parameters may be removed from a permit if there is no possibility
of discharge for that pollutant, however, if it is a standard
monitoring requirement of all permits (such as TSS) then
monitoring cannot be removed.
o BOD samples have a 48-hour hold time and a five-day incubation period.
Because of this, our contracted lab only allows collection of BOD samples
on Wednesday, Thursday, and the first half of Friday. The draft permit
states that collecting samples after business hours or during adverse
weather is not required. In addition, a 30-day separation is required
Page 15 of 16

between sampling events. These conditions limit opportunities for sample
collection. Can BOD be collected separately from the other parameters if a
qualifying event occurs on Monday or Tuesday?
■ DEMLR response: The expectation is that all parameters will be
tested in each sample taken. Sampling for one parameter without
the others does not provide as useful information on potential
issues occurring onsite affecting stormwater runoff. If lab restraints
prevent BOD from being analyzed in a given sample, another
sample may be collected; however, all other parameters should
also be tested for on the same sample. Please note data must be
reported for each day samples are taken and not combined into a
single sample date.
o Outfalls SW006 and SW007 are associated with employee parking lots.
The NIEHS requests removal of visual monitoring requirements for these
two outfalls as per 40 CFR 122.26(14), which states that outfalls can be
excluded from qualitative monitoring if located onsite but away from the
plant's industrial activities.
■ DEMLR response: As noted in the draft permit, outfalls SW004,
SW005, SW006, and SW007 do not have any industrial activities
associated with them, therefore no monitoring is required.
o Were there any public comments concerning the permit renewal and if so,
can they be provided to NIEHS?
■ DEMLR response: There were no public comments received on
the draft permit.
Page 16 of 16

Young, Brianna A
From: Steinmetz, Bill (NIH/NIEHS) [E] <[e-mail]>
Sent: Tuesday, February 21, 2023 3:13 PM
To: Young, Brianna A
Cc: Johnson, Paul (NIH/NIEHS) [E]
Subject: RE: [External] RE: Issued NPDES Stormwater Permit NCS000360
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Brianna
Yes, we received the new permit, saved an electronic copy, and confirm that all 37 pages are included.
Thanks
Bill Steinmetz
Environmental Compliance Specialist
NIEHS
984-287-3396
From: Young, Brianna A <[e-mail]>
Sent: Tuesday, February 21, 2023 2:37 PM
To: Steinmetz, Bill (NIH/NIEHS) [E] <[e-mail]>
Cc: Johnson, Paul (NIH/NIEHS) [E] <[e-mail]>
Subject: RE: [External] RE: Issued NPDES Stormwater Permit NCS000360
Good afternoon,
Attached is the issued NPDES stormwater permit for NIEHS (NCS000360). Please respond to this email confirming that
you received the attached document, were able to open and view the document, and have saved/printed a copy for
your records.
Thank you,
Brianna Young, MS (she/her/hers)
Industrial Individual Permits Coordinator
Stormwater Permitting Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Please check with the appropriate staff before visiting our offices,

as we may be able to handle your requests by phone or email. We appreciate your patience as we continue to serve the public
during this challenging time.
From: Steinmetz, Bill (NIH/NIEHS) [E] <[e-mail]>
Sent: Tuesday, February 21, 2023 1:18 PM
To: Young, Brianna A <[e-mail]>
Cc: Johnson, Paul (NIH/NIEHS) [E] <[e-mail]>
Subject: [External] RE: Issued NPDES Stormwater Permit NCS000360
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Brianna
Yes, the NIEHS approves electronic transmittal of permit and related documents in PDF format.
Thanks
Bill Steinmetz
Environmental Compliance Specialist
NIEHS
984-287-3396
From: Young, Brianna A <[e-mail]>
Sent: Tuesday, February 21, 2023 10:29 AM
To: Steinmetz, Bill (NIH/NIEHS) [E] <[e-mail]>
Subject: [EXTERNAL] Issued NPDES Stormwater Permit NCS000360
Good morning,
In order to provide more convenience, control, and security to our permittees and assist them in processing their
transactions, the Division of Energy, Mineral, and Land Resources, is currently transitioning towards electronic
correspondence. This will hopefully provide more efficient service to our permittees and other partners and will allow us
to more effectively process and track documents. We are writing to ask you for your approval of the transmittal of
documents related to your permitting and related activities with the Division in an electronic format. Documents will be
emailed to the appropriate contact person(s) in your organization in a PDF format.
Please respond to me through email with verification that transmittal of your documents in an electronic manner is
acceptable to you. If you have any questions, please feel free to contact me.
Thank you,
Brianna Young, MS (she/her/hers)
Industrial Individual Permits Coordinator
Stormwater Permitting Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604

�
NORTH CAROLINA cc���D- ClAi
Department of Environmental Quality
Email correspondence to and from this address is subject to the North
Carolina Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Please check with the appropriate staff before visiting our offices,
as we may be able to handle your requests by phone or email. We appreciate your patience as we continue to serve the public
during this challenging time.
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the
sender and are confident the content is safe.
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the
sender and are confident the content is safe.

AFFIDAVIT OF PUBLICATION
Account #
Order Number
Identification
I Order PO
Amount
Cols
Depth
38106
346843
Print Legal Ad-IPL00981610 - IPL0098161 NCS000360
I NCS000360
$470.60
2
25 L
Attention: Paul Clark
NC DENR ENGERGY MINERAL & LAND RESOURCES
1612 MAIL SERVICE CENTER
RALEIGH, NC 276991612
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
INTENT TO ISSUE NPDES STORMWATER DISCHARGE PERMITS
The North Carolina Environmental Management Commission proposes to issue
NPDES stormwater discharge permit(s) to the person(s) listed below. Public
comment or objection to the draft permits is invited. Written comments regarding
the proposed permit will be accepted until 30 days after the publish date of this
notice and considered in the final determination regarding permit issuance and
permit provisions. The Director of the NC Division of Energy, Mineral, and Land
Resources (DEMLR) may hold a public hearing should there be a significant
degree of public interest. Please mail comments and/or information requests to
DEMLR at 1612 Mail Service Center, Raleigh, NC 27699-1612.
National Institute of Environmental Health Sciences (NIEHS) [PO Box
12233 (MDFO-07), RTP, NC 27709] has requested renewal of permit
NCS000360 for the NIEHS facility in Durham County. This facility discharg-
es to an unnamed tributary to Burdens Creek in the Cape Fear River Basin.
Interested persons may visit DEMLR at 512 N. Salisbury street, Raleigh, NC
27604 to review information on file. Additional information on NPDES permits
and this notice may be found on our website: https://deq.nc.gov/about/divi-
sions/energy mineral-and-land-resources/stormwater/stormwater- program/
stormwater-public notices, or by contacting Brianna Young at brianna.young @
ncdenr.gov or 919-707-3647.
IPLOO98161
Nov 14 2022
STATE OF NORTH CAROLINA
COUNTY OF WAKE
Before the undersigned, a Notary Public of Dallas
County, Texas, duly commissioned and authorized to
administer oaths, affirmations, etc., personally
appeared Tara Pennington, who being duly sworn or
affirmed, according to law, cloth depose and say that he
or she is Accounts Receivable Specialist of the News &
Observer Publishing Company, a corporation organized
and doing business under the Laws of the State of North
Carolina, and publishing a newspaper known as The
News & Observer, Wake and State aforesaid, 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 1-
597 of the General Statutes of North Carolina and was a
qualified newspaper within the meaning of Section 1-597
of the General Statutes of North Carolina, and that as
such he or she makes this affidavit; and is familiar with
the books, files and business of said corporation and by
reference to the files of said publication the attached
advertisement for NC DENR ENGERGY MINERAL & LAND
RESOURCES was inserted in the aforesaid newspaper on
dates as follows:
No. of Insertions: 1
Beginning Issue of: 11/14/2022
Ending Issue of: 11/14/2022
I certify (or declare) under penalty of perjury that the
foregoing is true and correct.
Sftpk..".e Na"L-e.r
Notary Public in and for the state of Texas, residing in
Dallas County
�'`" ''• TEPHANIE:HATCHER
= ;
_x; •= My hlotar 10 # 1335Y417$
f Expirvs Jqanuary 14, 2026
Extra charge for lost or duplicate affidavits.
Legal document please do not destroy!

DEPARTMENT OF HEALTH & HUMAN SERVICES
DEC 2 o 2022
December 14, 2022
NC DEMLR/ Stormwater Permitting Program
Attn: Brianna Young
1612 Mail Service Center
Raleigh, North Carolina 27699-1612
Dear Ms. Young:
Public Health Service
National Institutes of Health
National Institute of
Environmental Health Sciences
P. 0. Box 12233
Research Triangle Park, NC 27709
Website: htto://www.niehs.nih.gov
The NIEHS has reviewed the draft version of NPDES Stormwater Permit NCS000360 and provides the following
comments for the record.
• The Building 108 Waste Handling Facility (WHF) is the industrial activity that triggers individual stormwater
permitting in accordance with 40 CFR 122.26(b)(14)(iv): Hazardous waste treatment, storage, and disposal (TSD)
facilities. Can language be added to the permit to specifically identify the regulation and the activity [Building 108
Waste Handling Facility (WHF)] that triggers the requirement for NIEHS to have a stormwater permit?
• The number of outfalls with sampling requirements increased from two to four. The NIEHS believes that two
sampling sites (Outfalls SW001 and SW002) are sufficient for monitoring stormwater around the Building 108
WHF. Can the number of sampling outfalls be reduced during this comment period or is applying for
Representative Outfall Status (ROS) the required approach?
• Analytical monitoring frequency increases from semiannual to quarterly in the draft permit. Has quarterly
sampling become the standard for all individual permit holders? If not, then NIEHS requests continuation of the
current semiannual sampling frequency. Note that all NIEHS sampling results have met benchmark guidelines for
the last three years, which supports maintenance of the existing sampling frequency.
• Can you provide the rationale for adding Total Suspended Solids (TSS) to the list of sampling requirements?
Building 108 WFIF is not a construction zone nor are any activities performed there that would cause an increase
in TSS. Since the permit is due to that facility then only activities taking place in that facility should be monitored.
Also, are there opportunities to reduce the number of sampling parameters based on adherence to benchmarks?
• BOD samples have a 48-hour hold time and a five-day incubation period. Because of this, our contracted lab only
allows collection of BOD samples on Wednesday, Thursday, and the first half of Friday. The draft permit states
that collecting samples after business hours or during adverse weather is not required. In addition, a 30-day
separation is required between sampling events. These conditions limit opportunities for sample collection. Can
BOD be collected separately from the other parameters if a qualifying event occurs on Monday or Tuesday?
• Outfalls SWO06 and SWO07 are associated with employee parking lots. The NIEHS requests removal of visual
monitoring requirements for these two outfalls as per 40 CFR 122.26(14), which states that outfalls can be
excluded from qualitative monitoring if located onsite but away from the plant's industrial activities.
• Were there any public comments concerning the permit renewal and if so, can they be provided to NIEHS?
'SSincerely
William K. Steinmetz / Environmental Compliance Specialist

Young, Brianna A
From: Steinmetz, Bill (NIH/NIEHS) [E] <[e-mail]>
Sent: Wednesday, December 14, 2022 9:33 AM
To: Young, Brianna A
Cc: Johnson, Paul (NIH/NIEHS) [E]; Novak, Stephen (NIH/NIEHS) [E]
Subject: [External] RE: NIEHS draft stormwater permit NCS000360
Attachments: NIEHS Stormwater Permit Comments-NCS000360.pdf
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Brianna
Good morning. Thanks for the opportunity to review the draft stormwater permit. We closely evaluated the draft
permit and provide the attached questions and comments in response. Please let us know if you need any additional
information or have questions about our comments. Note that a hardcopy with wet ink signature will follow.
Thanks
Bill Steinmetz
Environmental Compliance Specialist
NIEHS
984-287-3396
From: Young, Brianna A <[e-mail]>
Sent: Wednesday, November 16, 2022 9:24 AM
To: Steinmetz, Bill (NIH/NIEHS) [E] <[e-mail]>
Subject: [EXTERNAL] NIEHS draft stormwater permit NCS000360
Good morning,
Please find attached the draft stormwater permit NCS000360 for the NIEHS facility in RTP. A hardcopy of this draft
permit has also been placed in the mail. Please provide any comments by December 16, 2022.
Thank you,
Brianna Young, MS (she/her/hers)
Industrial Individual Permits Coordinator
Stormwater Permitting Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604

DE
ti
;
NORTH CAROLINA -
Department of Environmental Quality
Email correspondence to and from this address is subject to the North
Carolina Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Please check with the appropriate staff before visiting our offices,
as we may be able to handle your requests by phone or email. We appreciate your patience as we continue to serve the public
during this challenging time.
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the
sender and are confident the content is safe.

DEPARTMENT OF HEALTH & HUMAN SERVICES
December 14, 2022
NC DEMLR/ Stormwater Permitting Program
Attn: Brianna Young
1612 Mail Service Center
Raleigh, North Carolina 27699-1612
Dear Ms. Young:
Public Health Service
National Institutes of Health
National Institute of
Environmental Health Sciences
P. O. Box 12233
Research Triangle Park, NC 27709
Website: http://www.niehs.nih.gov
The NIEHS has reviewed the draft version of NPDES Stormwater Permit NCS000360 and provides the following
comments for the record.
• The Building 108 Waste Handling Facility (WHF) is the industrial activity that triggers individual stormwater
permitting in accordance with 40 CFR 122.26(b)(14)(iv): Hazardous waste treatment, storage, and disposal (TSD)
facilities. Can language be added to the permit to specifically identify the regulation and the activity [Building 108
Waste Handling Facility (WHF)] that triggers the requirement for NIEHS to have a stormwater permit?
• The number of outfalls with sampling requirements increased from two to four. The NIEHS believes that two
sampling sites (Outfalls SW001 and SW002) are sufficient for monitoring stormwater around the Building 108
WHF. Can the number of sampling outfalls be reduced during this comment period or is applying for
Representative Outfall Status (ROS) the required approach?
• Analytical monitoring frequency increases from semiannual to quarterly in the draft permit. Has quarterly
sampling become the standard for all individual permit holders? If not, then NIEHS requests continuation of the
current semiannual sampling frequency. Note that all NIEHS sampling results have met benchmark guidelines for
the last three years, which supports maintenance of the existing sampling frequency.
• Can you provide the rationale for adding Total Suspended Solids (TSS) to the list of sampling requirements?
Building 108 WHF is not a construction zone nor are any activities performed there that would cause an increase
in TSS. Since the permit is due to that facility then only activities taking place in that facility should be monitored.
Also, are there opportunities to reduce the number of sampling parameters based on adherence to benchmarks?
• BOD samples have a 48-hour hold time and a five-day incubation period. Because of this, our contracted lab only
allows collection of BOD samples on Wednesday, Thursday, and the first half of Friday. The draft permit states
that collecting samples after business hours or during adverse weather is not required. In addition, a 30-day
separation is required between sampling events. These conditions limit opportunities for sample collection. Can
BOD be collected separately from the other parameters if a qualifying event occurs on Monday or Tuesday?
• Outfalls SWO06 and SWO07 are associated with employee parking lots. The NIEHS requests removal of visual
monitoring requirements for these two outfalls as per 40 CFR 122.26(14), which states that outfalls can be
excluded from qualitative monitoring if located onsite but away from the plant's industrial activities.
• Were there any public comments concerning the permit renewal and if so, can they be provided to NIEHS?
Sincerely
William K. Steinmetz / Environmental Compliance Specialist

Young, Brianna A
From: Guyer, Shawn
Sent: Wednesday, November 23, 2022 12:15 PM
To: Young, Brianna A
Subject: RE: NIEHS draft stormwater permit NCS000360
Attachments: Draft NPDES Permit NCS000360.pdf
Brianna,
I concur with the issuance of this permit provided the facility is operated and maintained properly, the stated
effluent limits are met prior to discharge, and the discharge does not contravene the designated water quality
standards.
Shawn F. Guyer, P.E.
Regional Engineering Supervisor, Raleigh Regional Office
Division of Water Resources, Public Water Supply Section
North Carolina Department of Environmental Quality
Main: [phone] 1 Office: [phone] 1 Mobile: [phone]
[e-mail]
Physical: 3800 Barrett Drive, Raleigh NC 27609
Mailing: 1628 MSC, Raleigh NC, 27699-1628
ti;NORTH CAROLINA
Department of Environmental Duality
Email correspondence to and from this address is subject to the North
Carolina Public Records Law and may be disclosed to third parties.
From: Young, Brianna A <[e-mail]>
Sent: Wednesday, November 16, 2022 9:24 AM
To: Guyer, Shawn <[e-mail]>
Subject: NIEHS draft stormwater permit NCS000360
Good morning,
The draft stormwater permit for the NIEHS facility (NCS000360) in Durham County has been submitted for public notice.
This facility discharges to class WS-V; NSW waters. Please provide any comments by December 16, 2022.
Thank you.
Brianna Young, MS (she/her/hers)
Industrial Individual Permits Coordinator

Stormwater Permitting Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
, �: D E '� 7'� `
NORTH CAROLINA kl;
Department of Environmental Quality
Email correspondence to and from this address is subject to the North
Carolina Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Please check with the appropriate staff before visiting our offices,
as we may be able to handle your requests by phone or email. We appreciate your patience as we continue to serve the public
during this challenging time.

Compliance Inspection Report
Permit: NCS000360 Effective: 09/01/10 Expiration: 08/31/15 Owner: National Institute Of Env Health Science
SOC: Effective: Expiration: Facility: National Institute Of Env Health Science
County: Durham 111 Tw Alexander Dr
Region: Raleigh
Durham NC 27709
Contact Person: William K Steinmetz Title: Phone: [phone]
Directions to Facility:
System Classifications: SWNC,
Primary ORC:
Secondary ORC(s):
On -Site Representative(s):
Related Permits:
Inspection Date: 09/21/2022 Entry Time 01:30PM
Primary Inspector: Thaddeus W Valentine
Secondary Inspector(s):
Reason for Inspection: Routine
Permit Inspection Type: Stormwater Discharge, Individual
Facility Status: Compliant ❑ Not Compliant
Question Areas:
Storm Water
(See attachment summary)
Certification:
Phone:
Exit Time: 02:30PM
Phone:
Inspection Type: Compliance Evaluation
Page 1 of 3

Permit: NCS000360 Owner - Facility: National Institute Of Env Health Science
Inspection Date: 09/21/2022 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
I meet Bill Steinmetz at the facility and looked over his documents and found everything in order. Reviewed the facility for
their permit renewal and everything is in order to issue the permit as is, nothing has changed from the last permit issuance
so what we have for them along with any internal changes will work fine.
Page 2 of 3

Permit: NCS000360 Owner - Facility: National Institute Of Env Health Science
Inspection Date: 09/21/2022 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Stormwater Pollution Prevention Plan
Yes No NA NE
Does the site have a Stormwater Pollution Prevention Plan?
❑ ❑ ❑
# Does the Plan include a General Location (USGS) map?
❑ ❑ ❑
# Does the Plan include a "Narrative Description of Practices"?
❑ ❑ ❑
# Does the Plan include a detailed site map including outfall locations and drainage areas?
❑ ❑ ❑
# Does the Plan include a list of significant spills occurring during the past 3 years?
❑ ❑ ❑
# Has the facility evaluated feasible alternatives to current practices?
❑ ❑ ❑
# Does the facility provide all necessary secondary containment?
❑ ❑ ❑
# Does the Plan include a BMP summary?
❑ ❑ ❑
# Does the Plan include a Spill Prevention and Response Plan (SPRP)?
❑ ❑ ❑
# Does the Plan include a Preventative Maintenance and Good Housekeeping Plan?
❑ ❑ ❑
# Does the facility provide and document Employee Training?
0
❑ ❑ ❑
# Does the Plan include a list of Responsible Party(s)?
0
❑ ❑ ❑
# Is the Plan reviewed and updated annually?
0
❑ ❑ ❑
# Does the Plan include a Stormwater Facility Inspection Program?
0
❑ ❑ ❑
Has the Stormwater Pollution Prevention Plan been implemented?
0
❑ ❑ ❑
Comment: I looked at there documentation and it was all looking good and up to date
Qualitative Monitoring Yes No NA NE
Has the facility conducted its Qualitative Monitoring? 0 ❑ ❑ ❑
Comment: Good
Analytical Monitoring Yes No NA NE
Has the facility conducted its Analytical monitoring? 0 ❑ ❑ ❑
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ❑ ❑ 0 ❑
Comment: Good
Permit and Outfalls Yes No NA NE
# Is a copy of the Permit and the Certificate of Coverage available at the site? 0 ❑ ❑ ❑
# Were all outfalls observed during the inspection? ❑ ❑ ❑
# If the facility has representative outfall status, is it properly documented by the Division? ❑ ❑ ❑
# Has the facility evaluated all illicit (non stormwater) discharges? ❑ ❑ ❑
Comment: Everything is in order
Page 3 of 3

Young, Brianna A
From: Steinmetz, Bill (NIH/NIEHS) [E] <[e-mail]>
Sent: Monday, June 27, 2022 2:33 PM
To: Young, Brianna A
Subject: RE: [External] RE: NIEHS Stormwater Permit NCS000360
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Brianna
Excellent. Good to hear that the permit renewal process is back on track. The eight NIEHS stormwater discharge
outfalls were selected during an early 2011 site visit by Mack Wiggins / NCDENR. Outfalls SW001, SW002, and SWO03
were considered to be associated with industrial activity and therefore triggered analytical + visual monitoring. The
remaining five outfalls (SW004-SW008) were designated as visual monitoring only since there are no industrial activities
in these drainage areas. Outfall SWO03 was granted ROS since the apparent industrial activity, which is the Building 104
warehouse, was repurposed for long term storage with infrequent material deliveries.
The NIEHS would like to reduce the number of visual monitoring outfalls as per 40 CFR 122.26(14), which states that
outfalls can be excluded from qualitative monitoring if located onsite but away from the plant's industrial activities. The
SWO03-SWO08 drainage areas feature employee parking lots, and building loading docks for receiving facility equipment,
cafeteria deliveries, and lab and office supplies. These outfalls are located away from the industrial activities associated
with the Building 108 (SW001) Waste Handling Facility (WHF). The WHF is the trigger for individual stormwater
permitting as per 40 CFR 122.26(b)(14)(iv). Let us know if ROS would be possible for some of these visual monitoring
sites.
NIEHS Outfalls:
Analytical + Visual Monitoring:
SW001-Building 108 / WHF loading dock for chemical waste shipping and receiving activities / Regulated industrial
activity: Waste Handling Facility
SWO02 Building 105 / boiler plant fuel oil, sulfuric acid, water treatment chemical delivery areas, incinerator plant
deliveries, contractor parking lots / WHF structure is in part of this drainage area.
Visual Monitoring Only:
SWO03 Building 104 / warehouse loading dock & emergency generator fuel oil tank / infrequent deliveries / No
regulated industrial activities
SWO04 Buildings 102 & 103 / loading docks for delivery of facility equipment, paper records, office supplies / No
regulated industrial activities
SWO05 Building 101 A -Dock / loading dock for delivery of cafeteria supplies and facility equipment / No regulated
industrial activities
SWO06 South Parking Lot / employee vehicle parking lot / No regulated industrial activities
SWO07 North Parking Lot / employee vehicle parking lot / No regulated industrial activities
SWO08 Building 101F / loading docks for deliveries of facility equipment, office supplies, lab supplies along with chemical
waste pick-up / No regulated industrial activities
Note1:

The NIEHS has not been able to submit eDMR since we currently have two outfalls and the system only allows entry of
analytical results for one SDO. In addition, NIEHS was informed that the pending permit would require analytical
monitoring at one SDO. We plan to continue submitting results through the portal for two analytical monitoring outfalls
during this interim period. Let us know if you have questions, comments, or guidance.
Note2:
The NIEHS is operating a warehouse (Building 110) at 105 TW Alexander Drive on the north end of the campus
property. Although on the same property, the Building 110 warehouse has a different address from the Main Campus, is
located in a separate watershed, and is not connected to the internal road network. The warehouse is used for routine
shipping and receiving. There are no regulated industrial activities and no exposed materials at this site. The road
network, trash dumpster, C & D dumpster, loading dock, and emergency generator fuel oil tank are reviewed as part of
the semiannual stormwater inspection. However, monitoring has not been performed due to the distance from the
waste handling facility. Let us know if you have questions, comments, or guidance pertaining to the Building 110 facility.
Thanks
Bill Steinmetz
Environmental Compliance Specialist
NIEHS
984-287-3396
From: Young, Brianna A <[e-mail]>
Sent: Friday, June 24, 2022 1:15 PM
To: Steinmetz, Bill (NIH/NIEHS) [E] <[e-mail]>
Subject: RE: [External] RE: NIEHS Stormwater Permit NCS000360
Hello Bill,
I just realized I sent you incorrect information in my last email. The permit renewal will not be held until 2024 — it is
scheduled for 2022 (1 got this permit's scheduled order mixed up with another one at the time). I was in the process of
reviewing the information you sent and had 2 follow-up questions when I saw the error in the email exchange. I
apologize for this. My questions are:
• Please provide a description of industrial processes in each drainage area.
• It appears there are 8 outfalls, but only 2 outfalls have analytical monitoring (the rest are visual only). Can you
provide reasoning or documentation as to why these outfalls are visual monitoring only? I see in our files that
Repesenative Outfall Status (ROS) was granted in 2018 for SW003, however, I did not see anything pertaining to
outfalls SW004, SW005, SW006, SW007, and SW008.
I would greatly appreciate if you could provide answers to these 2 questions. Again, I apologize for the confusion over
review timeline. Please let me know if you have any questions or concerns.
Thank you,
Brianna Young, MS (she/her/hers)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred)
919-707-3647 (office)

Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We
appreciate your patience as we continue to serve the public during this challenging time.
From: Steinmetz, Bill (NIH/NIEHS) [E] <[e-mail]>
Sent: Wednesday, May 25, 2022 10:28 AM
To: Young, Brianna A <[e-mail]>
Subject: RE: [External] RE: NIEHS Stormwater Permit NCS000360
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Brianna
Okay, thanks for the update about rescheduling the permit renewal. Just let me know when it's time for NIEHS to renew
and I'll update/resubmit the application documents.
Bill Steinmetz
Environmental Compliance Specialist
NIEHS
984-287-3396
From: Young, Brianna A <[e-mail]>
Sent: Wednesday, May 25, 2022 10:07 AM
To: Steinmetz, Bill (NIH/NIEHS) [E] <[e-mail]>
Subject: RE: [External] RE: NIEHS Stormwater Permit NCS000360
M1
Thank you for providing this information. Please note that due to a backlog of permit renewals, this permit is not
scheduled for review until 2024. However, this schedule is subject to change. Please let me know if you have any
questions in the interim.
Thank you,
Brianna Young, MS (she/her/hers)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604

Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We
appreciate your patience as we continue to serve the public during this challenging time.
From: Steinmetz, Bill (NIH/NIEHS) [E] <[e-mail]>
Sent: Wednesday, May 25, 2022 9:17 AM
To: Young, Brianna A <[e-mail]>
Subject: [External] RE: NIEHS Stormwater Permit NCS000360
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Brianna
Good morning. Here are the NIEHS stormwater permit (NCS000360) renewal request forms. Hardcopies with wet ink
signatures were placed in the regular mail last week. Let me know if you have questions or would like additional
information.
Thanks
Bill Steinmetz
Environmental Compliance Specialist
NIEHS
984-287-3396
From: Young, Brianna A <[e-mail]>
Sent: Thursday, April 14, 2022 9:29 AM
To: Steinmetz, Bill (NIH/NIEHS) [E] <[e-mail]>
Subject: [EXTERNAL] NIEHS Stormwater Permit NCS000360
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the
sender and are confident the content is safe.
Good morning,
I am the Individual Industrial Stormwater Permits Coordinator for the Division of Energy, Mineral, and Land Resources
(DEMLR). We received a renewal notification for the NIEHS stormwater permit NCS000360 on March 3, 2015,
however, all required information was not submitted. I need this missing information, as well as additional
information, in order to 1) confirm that the information I have is correct and 2) make sure the permit adequately
serves the needs of the facility. Please provide the following:
• Permit application (not submitted with previous request; see our website for correct forms);
• Description of any significant changes in industrial activity at the permitted facility (not submitted with
previous request);
• An electronic spreadsheet summarizing all of the monitoring data that has been collected since the
effective date of the current permit;
• Verification that the information in the renewal application is still complete and correct; and
4

• An explanation of any operational changes since the renewal application was submitted.
Enter your stormwater permit number into the Stormwater Permit Summary Report and you will see a form that
includes the address of the facility, contact information for the permit, and the regulated stormwater outfall(s) for the
facility. Please review the facility information to make sure it is correct. Information can be updated using the links
provided below, where applicable:
• Facility/Company name or ownership: Name/Ownership Change Form
• Owner Affiliation (Legally responsible person; i.e., someone with the company who is designated to
represent the company per signatory requirements or another authorized representative): Permit Contact
Update Request Form
• Delegation of Signature Authority (DOSA): Permit Contact Update Request Form
• Billing contact: Permit Contact Update Request Form
• Permit contact: Permit Contact Update Request Form
• Facility contact: Permit Contact Update Request Form
• Facility address only: Email Bethany og ulias
• Stormwater outfall information: Email Bethany Georgoulias
• Visit the eDMR Six Steps website and complete Steps 1 and 2.
• Pay outstanding permit fees: Stormwater ePayment website
Once I have the above listed information, I can continue my review. You will receive a draft permit for a 30-day
comment period. During this time we will be able to address any comments or concerns you have. During the
same 30-day period, the draft will be sent to a Regional Office staff member for review as well as out to public
notice. Once all comments and concerns are addressed, you may be issued a final permit.
Please contact me if you have any questions.
Thank you,
Brianna Young, MS (she/her/hers)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ / Division of Energy, Mineral, and Land Resources (DEMLR)
Brianna.Younggncdenr.gov (e-mail preferred)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We
appreciate your patience as we continue to serve the public during this challenging time.
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the
sender and are confident the content is safe.

CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the
sender and are confident the content is safe.

Young, Brianna A
From: Steinmetz, Bill (NIH/NIEHS) [E] <[e-mail]>
Sent: Wednesday, May 25, 2022 9:17 AM
To: Young, Brianna A
Subject: [External] RE: NIEHS Stormwater Permit NCS000360
Attachments: NIEHS Supplemental Information-Signed.pdf, NIEHS NPDES Application Form 1-
Signed.pdf, NIEHS NPDES Stormwater Industrial Discharge -Application Form 2F-
Signed.pdf, NIEHS Stormwater Permit Renewal Cover Letter May2022-Signed.pdf; NIEHS
NPDES Application 2F Attach ments.xlsx; NIEHS NPDES Application 2F Section 3 Site
Drainage Maps.pptx; NIEHS NPDES Application Form 1 Section 7 - 7.5 Minute USGS
Topo 2022.pdf
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Brianna
Good morning. Here are the NIEHS stormwater permit (NCS000360) renewal request forms. Hardcopies with wet ink
signatures were placed in the regular mail last week. Let me know if you have questions or would like additional
information.
Thanks
Bill Steinmetz
Environmental Compliance Specialist
NIEHS
984-287-3396
From: Young, Brianna A <[e-mail]>
Sent: Thursday, April 14, 2022 9:29 AM
To: Steinmetz, Bill (NIH/NIEHS) [E] <[e-mail]>
Subject: [EXTERNAL] NIEHS Stormwater Permit NCS000360
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the
sender and are confident the content is safe.
Good morning,
I am the Individual Industrial Stormwater Permits Coordinator for the Division of Energy, Mineral, and Land Resources
(DEMLR). We received a renewal notification for the NIEHS stormwater permit NCS000360 on March 3, 2015,
however, all required information was not submitted. I need this missing information, as well as additional
information, in order to 1) confirm that the information I have is correct and 2) make sure the permit adequately
serves the needs of the facility. Please provide the following:
Permit application (not submitted with previous request; see our website for correct forms);
Description of any significant changes in industrial activity at the permitted facility (not submitted with
previous request);

• An electronic spreadsheet summarizing all of the monitoring data that has been collected since the
effective date of the current permit;
• Verification that the information in the renewal application is still complete and correct; and
• An explanation of any operational changes since the renewal application was submitted.
Enter your stormwater permit number into the Stormwater Permit Summary Report and you will see a form that
includes the address of the facility, contact information for the permit, and the regulated stormwater outfall(s) for the
facility. Please review the facility information to make sure it is correct. Information can be updated using the links
provided below, where applicable:
• Facility/Company name or ownership: Name/Ownership Change Form
• Owner Affiliation (Legally responsible person; i.e., someone with the company who is designated to
represent the company per signatory requirements or another authorized representative)
Update Request Form
• Delegation of Signature Authority (DOSA): Permit Contact Update Request Form
• Billing contact: Permit Contact Update Request Form
• Permit contact: Permit Contact Update Request Form
• Facility contact: Permit Contact Update Request Form
• Facility address only: Email Bethanyy og ulias
• Stormwater outfall information: Email Bethany Georgoulias
• Visit the eDMR Six Steps website and complete Steps 1 and 2.
• Pay outstanding permit fees: Stormwater ePayment website
Permit Contact
Once I have the above listed information, I can continue my review. You will receive a draft permit for a 30-day
comment period. During this time we will be able to address any comments or concerns you have. During the
same 30-day period, the draft will be sent to a Regional Office staff member for review as well as out to public
notice. Once all comments and concerns are addressed, you may be issued a final permit.
Please contact me if you have any questions.
Thank you,
Brianna Young, MS (she/her/hers)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ / Division of Energy, Mineral, and Land Resources (DEMLR)
Brianna.Youna(&ncdenr.eov (e-mail preferred)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We
appreciate your patience as we continue to serve the public during this challenging time.

DEPARTMENT OF HEALTH & HUMAN SERVICES
May 20, 2022
Ms. Brianna Young, Industrial Individual Permits Coordinator
Stormwater Program
NCDEQ / Division of Energy, Minerals and Land Resources (DEMLR)
1612 Mail Service Center
Raleigh, North Carolina 27699-1612
Dear Ms. Young:
Public Health Service
National Institutes of Health
National Institute of
Environmental Health Sciences
P. O. Box 12233
Research Triangle Park, NC 27709
Website: http://www.niehs.nih.gov
The NIEHS requests renewal of NPDES Stormwater Permit NCS000360. Two copies of the completed
application forms and supporting materials are enclosed for your review. The permit application package
includes NPDES Application Form 1, NPDES Application Form 2F as well as associated tables, maps,
and supplemental information.
Note that the data period covers the entire permit term, which began in September 2010. Also, facility
information in the Stormwater Permit Summary report for NIEHS was reviewed and updated in
accordance with your request. Please do not hesitate to contact me at [phone] if you have any
questions concerning this individual stormwater permit renewal application.
Sincerely
William K. Steinmetz
Environmental Compliance Specialist
Enclosures

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
110060508954
NCS000360
NIEHS
OMB No.2040-0004
Form
U.S. Environmental Protection Agency
1
\9% EPA
Application for NPDES Permit to Discharge Wastewater
NPDES
GENERAL INFORMATION
SECTION•
•• r
1.1
Applicants Not Required to Submit Form 1
1.1.1
Is the facility a new or existing publicly owned
1.1.2
Is the facility a new or existing treatment works
treatment works?
treating domestic sewage?
If yes, STOP. Do NOT complete CK No
If yes, STOP. Do NOT Dg No
Form 1. Complete Form 2A.
complete Form 1. Complete
Form 2S.
1.2
Applicants Required to Submit Form 1
1.2.1
Is the facility a concentrated animal feeding
1.2.2
Is the facility an existing manufacturing,
operation or a concentrated aquatic animal
commercial, mining, or silvicultural facility that is
a
production facility?
currently discharging process wastewater?
o
❑ Yes 4 Complete Form 1 DQ No
Yes -* Complete Form DQ No
a
and Form 2B.
1 and Form 2C.
z
a
1.2.3
Is the facility a new manufacturing, commercial,
1.2.4
Is the facility a new or existing manufacturing,
=
mining, or silvicultural facility that has not yet
commercial, mining, or silvicultural facility that
commenced to discharge?
discharges only nonprocess wastewater?
C
Yes -* Complete Form 1 14 No
❑ Yes 4 Complete Form DQ No
and Form 2D.
1 and Form 2E.
Vl
1.2.5
Is the facility a new or existing facility whose
'—
discharge is composed entirely of stormwater
a
associated with industrial activity or whose
discharge is composed of both stormwater and
non-stormwater?
]� Yes 4 Complete Form 1 ❑ No
and Form 2F
unless exempted by
40 CFR
122.26(b)(14)(x) or
b (15).
SECTIOND••
AND LOCATION (40
2.1
Facility Name
National Institute of Environmental Health Sciences (NIEHS)
2.2
EPA Identification Number
r0
J
110060508954
2.3
Facility Contact
Vl
a
L
Name (first and last)
Title
Phone number
a
William K. Steinmetz
Environmental Compliance Specialist
984-287-3396
I
Email address
Steinnne1 @niehs.nih.gov
2.4
Facility Mailing Address
ZStreet
or P.O. box
P.O. Box 12233 (MD FO-07)
State
ZIP code
=ReseaTriangle Park
NC
27709
EPA Form 3510-1 (revised 3-19) Page 1

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
110060508954
NCS000360
NIEHS
OMB No.2040-0004
N 0
2.5
Facility Location
rStreet,
route number, or other specific identifier
a 0
U
111 T.W. Alexander Dr
�
0
County name
County code (if known)
"
Durham
City or town
State ZIP code
z R
Research Triangle Park
NC 27709
SECTION•D
i
3.1
SIC Code(s)
Description (optional)
9199
d
0
U
N
U
Z
3.2
NAICS Code(s)
Description (optional)
923120
Administration of Public Health Programs
SECTIONOPERATOR
INFORMATION
4.1
Name of Operator
National Institute of Environmental Health Sciences (NIEHS)
0
4.2
Is the name you listed in Item 4.1 also the owner?
cc
E
El Yes No United States Government
0
4.3
Operator Status
Public —federal ❑ Public —state ❑ Other public (specify)
o
❑ Private ❑ Other (specify)
4.4
Phone Number of Operator
984-287-3400
0
4.5
Operator Address
Street or P.O. Box
0
P.O. Box 12233 (MD FO-07)
r
City or town
State
ZIP code
0 0
Research Triangle Park
NC
27709
Q
Email address of operator
O
[e-mail]
SECTION,0
5.1
Is the facility located on Indian Land?
G _
❑ Yes DQ No
EPA Form 3510-1 (revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110060508954 NCS000360 NIEHS OMB No.2040-0004
'ECTION 6. EXISTING ENVIRONMENTAL
6.1 Existing Environmental Permits (check all that apply and print or type the corresponding permit number for each)
NPDES (discharges to surface
X RCRA (hazardous wastes)
❑ UIC (underground injection of
c
L —
water)
NCS000360
NC2750890004R2
fluids)
w a
❑ PSD (air emissions)
❑ Nonattainment program (CAA)
NESHAPs (CAA)
NCDAQ Permit, 04226R36
❑ Ocean dumping (MPRSA)
El Dredge or fill (CWA Section 404)
DQ Other (specify) Durham County
w
Industrial User Permit DC-007
7.1 Have you attached a topographic map containing all required information to this application? (See instructions for
C specific requirements.)
D( Yes ❑ No ❑ CAFO—Not Applicable (See requirements in Form 2B.)
8.1 1 Describe the nature of your business.
The NIEHS is part of the National Institutes of Health. The NIEHS mission is to discover how
y the environment affects people in order to promote healthier lives. Mission includes research
performed in onsite laboratory facilities and grant programs that support offsite research at
universities, hospitals, businesses, and other organizations around the country.
m
0
m
L
{Q
Z
9.1 Does your facility use cooling water?
L ❑ Yes No 4 SKIP to Item 10.1.
R 5 9.2 Identify the source of cooling water. (Note that facilities that use a cooling water intake structure as described at
40 CFR 125, Subparts I and J may have additional application requirements at 40 CFR 122.21(r). Consult with your
oY NPDES permitting authority to determine what specific information needs to be submitted and when.)
U Not applicable
10.1 Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(m)? (Check all that
y apply. Consult with your NPDES permitting authority to determine what information needs to be submitted and
when.)
C ❑ Fundamentally different factors (CWA ❑ Water quality related effluent limitations (CWA Section
Section 301(n)) 302(b)(2))
❑ Non -conventional pollutants (CWA ❑ Thermal discharges (CWA Section 316(a))
Section 301(c) and (g))
DQ Not applicable
EPA Form 3510-1 (revised 3-19) Page 3

EPA Identification Number
NPDES Permit Number
Facility Name Form Approved 03/05/19
�111100605108954
NCS000360
NIEHS OMB No.2040-0004
SECTION•
d (d
11.1
In Column 1 below, mark the sections of Form 1 that you have completed and are submitting with your application.
For each section, specify in Column 2 any attachments that you are enclosing to alert the permitting authority. Note
that not all applicants are required to provide attachments.
Column 1
Column 2
DQ Section 1: Activities Requiring an NPDES Permit
❑ w/ attachments
DQ Section 2: Name, Mailing Address, and Location
❑ w/ attachments
Section 3: SIC Codes
❑ w/ attachments
�$[ Section 4: Operator Information
❑ w/ attachments
Section 5: Indian Land
❑ w/ attachments
Section 6: Existing Environmental Permits
❑ w/ attachments
d
DQ Section 7: Map
w/ topographic
❑ w/ additional attachments
2
map
cDg
Section 8: Nature of Business
❑ wl attachments
Section 9: Cooling Water Intake Structures
❑ w/ attachments
a�
Section 10: Variance Requests
❑ w/ attachments
T
DQ Section 11: Checklist and Certification Statement
❑ w/ attachments
11.2
Certification Statement
U
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision
in accordance with a system designed to assure that qualified personnel properly gather and evaluate the
information submitted. Based on my inquiry of the person or persons who manage the system, or those persons
directly responsible for gathering the information, the information submitted is, to the best of my knowledge and
belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fine and imprisonment for knowing violations.
Name (print or type first and last name)
Official title
William K. Steinmetz
Environmental Compliance Specialist
Signature
Date signed
EPA Form 3510-1 (revised 3-19) Page 4

NIEHS - NPDES Application Form 1 / Section 7 Topographic Map
I J � _tip- �-�� I � 4 i � • -
rlt i 4 litRa I M1'd
A
nitL
Government
I;` 4 Property o
N I Eli I
µ i r
r �* EPA
10 +. RC R.A
Waste Harrdliing Facility #W4 F)
Lat = 35.V764 ! nn& 7$_91641 f
y

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110060508954 NCS000360 N I EHS OMB No. 2040-0004
Form U.S Environmental Protection Agency
2F \1W. EPA Application for NPDES Permit to Discharge Wastewater
NPDES STORMWATER DISCHARGES ASSOCIATED WITH INDUSTRIAL ACTIVITY
SECTIONOUTFALL LOCATION
1.1 Provide information on each of the facilit 's outfalls in the table below
Outfall Receiving Water Name Latitude Longitude
Number
See attached Table °
O
O
O
SECTION' • I
2.1 Are you presently required by any federal, state, or local authority to meet an implementation schedule for constructing,
upgrading, or operating wastewater treatment equipment or practices or any other environmental programs that could
affect the discharges described in this application?
❑ Yes X No 4 SKIP to Section 3.
2.2 Briefly identify each applicable project in the table below.
Brief Identification and Affected Outfalls Source(s) of Discharge Final Compliance Dates
Description of Project (list outfall numbers)
Required Projected
Not Applicable
15
;_
0
L
Q
E
2.3 Have you attached sheets describing any additional water pollution control programs (or other environmental projects
that may affect your discharges) that you now have underway or planned? (Optional Item)
❑ Yes D[ No Not Applicable
EPA Form 3510-21F (Revised 3-19) Page 1

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05119
110060508954 NCS000360 NIEHS OMB No.2040-0004
SECTIOND- i
a� 3.1 Have you attached a site drainage map containing all required information to this application? (See instructions for
2 _ C specific guidance.)
N R M
In W Yes See attached PowerPoint file ❑ No
SECTIONPOLLUTANT SOURCESi
4.1 Provide information on the facility's pollutant sources in the table below.
Cutfall
Impervious Surface Area
Total Surface Area Drained
Number
(within a mile radius of the facility)
(within a mile radius of the facility)
specify units
specify units
See attached Table
specify units
specify units
specify units
specify units
specify units
specify units
specify units
specify units
specify units
specify units
4.2
Provide a narrative description of the facility's significant material in the space below. (See instructions for content
requirements.)
All materials stored outdoors in significant quantities are protected from exposure to stormwater through secondary containment basins,
y
double -walled tank structures, and covered storage. These materials include an outdoor storage capacity of 285,000 gallons of fuel oil for
emergency generators and boiler plant use along with 3400 gallons storage capacity of Brine solution for use in the water softening operation.
CChemical
pesticides are used only when absolutely necessary in accordance with Integrated Pest Management (IPM) principles and in a
"Restricted
N
manner that is safe to NIEHS personnel, wildlife, and the environment. No Use" pesticides are used on the NIEHS Campus.
All personnel involved with fertilizer application must be certified through the COOP Extension Service. In addition, fertilizer is not applied
cc
within 50 feet of campus waterbodies as per Jordan Lake buffer zone requirements. Herbicides are only used for spot treatment of noxious,
invasive, or aggressive weeds.
O
The Waste Handling Facility (WHF) stores chemical waste from the NIEHS laboratories in preparation for disposal. The waste is packaged, labeled and placed
t1
in secondary containment before being transported to the WHF. The waste storage areas in the WHF keep incompatible materials separated and provide
secondary containment for stored containers. There are no floor drains in the chemical storage areas and the floors within each room are sloped to prevent
spill migration both from room to room and to the building exterior.
4.3
Provide the location and a description of existing structural and non-structural control measures to reduce pollutants in
stormwater runoff. See instructions for specificguidance.)
Stormwater Treatment
Codes
C utfall
from
Number
Control Measures and Treatment
Exhibit
2F-1
list
See Attached Table
EPA Form 3510-21F (Revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05119
110060508954 NCS000360 N I EHS OMB No. 2040-0004
SECTION•N STORMWATER I I
5.1 I certify under penalty of law that the outfall(s) covered by this application have been tested or evaluated for the
presence of non-stormwater discharges. Moreover, I certify that the outfalls identified as having non-stormwater
discharges are described in either an accompanying NPDES Form 2C, 2D, or 2E application.
Name (print or type first and last name)
Official title
William K. Steinmetz
Environmental Compliance Specialist
Signature
Date signed
tp
tM
5.2
Provide the testing information requested in the table below.
Outfall
Onsite Drainage Points
A
o
Number
Description of Testing Method Used
Date(s) of Testing
Directly Observed
L
During Test
d
R
3
E
i
See attached Table
O
N
C
O
Z
SECTIONOR
I I
6.1
Describe any significant leaks or spills of toxic or hazardous pollutants in the last three years.
tp
.Q
N
O
Y
There have been no significant leaks or spills of toxic or hazardous pollutants on
the NIEHS Campus in the last three years.
J
C
!Q
V
w
T
N
SECTIONDISCHARGE
INFORMATIONI
See the
instructions to determine the pollutants and parameters you are required to monitor and, in turn, the tables you must
o
complete.
Not all applicants need to complete each table.
7.1
Is this a new source or new discharge?
Yes 4 See instructions regarding submission of D4 No 4 See instructions regarding submission of
d
estimated data. actual data.
Tables A, B, C, and D
y
7.2
Have you completed Table A for each outfall?
VX Yes See attached Table A historical data ❑ No
EPA Form 3510-21F (Revised 3-19) Page 3

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05/19
110060508954
NCS00036O
NIEHS
OMB No.2040-0004
7.3
Is the facility subject to an effluent limitation guideline (ELG) or effluent limitations in an NPDES permit for its process
wastewater?
❑ Yes Pq No 4 SKIP to Item 7.5.
7.4
Have you completed Table B by providing quantitative data for those pollutants that are (1) limited either directly or
indirectly in an ELG and/or (2) subject to effluent limitations in an NPDES permit for the facility's process wastewater?
❑ Yes 04 No Not applicable
7.5
Do you know or have reason to believe any pollutants in Exhibit 2F-2 are present in the discharge?
X Yes ❑ No 4 SKIP to Item 7.7.
7.6
Have you listed all pollutants in Exhibit 2F-2 that you know or have reason to believe are present in the discharge and
provided quantitative data or an explanation for those pollutants in Table C?
See Table A and note that NIEHS
❑ Yes No Table C pollutants are same as Table A
7.7
Do you qualify for a small business exemption under the criteria specified in the Instructions?
❑ Yes 4SKIP to Item 7.18. M No
7.8
Do you know or have reason to believe any pollutants in Exhibit 2F-3 are present in the discharge?
❑ Yes D( No -+ SKIP to Item 7.10.
7.9
Have you listed all pollutants in Exhibit 2F-3 that you know or have reason to believe are present in the discharge in
Table C?
o
❑ Yes( No Not applicable
U
0
7.10
Do you expect any of the pollutants in Exhibit 2F-3 to be discharged in concentrations of 10 ppb or greater?
E
❑ Yes No -* SKIP to Item 7.12.
0
7.11
Have you provided quantitative data in Table C for those pollutants in Exhibit 2F-3 that you expect to be discharged in
concentrations of 10 ppb or greater?
❑ Yes [,� No Not applicable
T
7.12
Do you expect acrolein, acrylonitrile, 2,4-dinitrophenol, or 2-methyl -4,6-dinitrophenol to be discharged in concentrations
of 100 ppb or greater?
❑ Yes No -+ SKIP to Item 7.14.
7.13
Have you provided quantitative data in Table C for the pollutants identified in Item 7.12 that you expect to be
discharged in concentrations of 100 ppb or greater?
❑ Yes M No Not applicable
7.14
Have you provided quantitative data or an explanation in Table C for pollutants you expect to be present in the
discharge at concentrations less than 10 ppb (or less than 100 ppb for the pollutants identified in Item 7.12)?
❑ Yes M No Not applicable
7.15
Do you know or have reason to believe any pollutants in Exhibit 2F-4 are present in the discharge?
❑ Yes D( No -+ SKIP to Item 7.17.
7.16
Have you listed pollutants in Exhibit 2F-4 that you know or believe to be present in the discharge and provided an
explanation in Table C?
❑ Yes No Not applicable
7.17
Have you provided information for the storm event(s) sampled in Table D?
M No Not applicable
❑ Yes VX
EPA Form 3510-21F (Revised 3-19) Page 4

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03/05119
110060508954
NCS000360
NIEHS
OMB No.2040-0004
Used or Manufactured Toxics
7.18
Is any pollutant listed on Exhibits 2F-2 through 2F-4 a substance or a component of a substance used or
C
manufactured as an intermediate or final product or byproduct?
0
❑ Yes SKIP to Section 8.
0
YIN
7.19
List the pollutants below, including TCDD if applicable.
E
1. Not Applicable 4. 7.
2. 5. 8.
0
3. 6. 9.
SECTION•
• • i
8.1
Do you have any knowledge or reason to believe that any biological test for acute or chronic toxicity has been made on
any of your discharges or on a receiving water in relation to your discharge within the last three years?
0
❑ Yes No 4 SKIP to Section 9.
8.2
Identify the tests and their purposes below. Not applicable
Test(s)
Purpose of Test
Submitted to NPDESs)
Permitting Authority?
Date Submitted
X
0
~
❑ Yes ❑ No
R
V
M
❑ Yes ❑ No
0
m
❑ Yes ❑ No
SECTION•
•- • i
9.1
Were any of the analyses reported in Section 7 (on Tables A through C) performed by a contract laboratory or
consulting firm?
P4 Yes ❑ No 4 SKIP to Section 10.
9.2
Provide information for each contract laboratory or consulting firm below.
Laboratory Number 1
Laboratory Number 2
Laboratory Number 3
Name of laboratory/firm
•R
ENCO Laboratories
E
L
O
ti
Laboratory address
102-A Woodwinds Industrial
Ct.
Cary, NC 27511
a
R
L
o
Phone number
919-467-3090
Pollutant(s) analyzed
Aluminum
BOD
COD
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Form 3510-21F (Revised 3-19) Page 5

EPA Identification Number
NPDES Permit Number Facility Name Form Approved 03/05119
110060508954
NCS000360 NIEHS OMB No. 2040-0004
SECTION
i
i
10.1
In Column 1 below, mark the sections of Form 2F that you have completed and are submitting with your application. For
each section, specify in Column 2 any attachments that you are enclosing to alert the permitting authority. Note that not
all applicants are required to complete all sections or provide attachments.
Column 1
Column 2
Section 1
w/ attachments (e.g., responses for additional outfalls)
❑ Section 2
❑ w/ attachments
Section 3
w/ site drainage map
DQ Section 4
w/ attachments
Section 5
w/ attachments
Section 6
❑ w/ attachments
E
DQ Section 7
Table A � ❑ wl small business exemption request
R
N
c
❑ Table B w/ analytical results as an attachment
DQ Table C ❑ Table D
❑ Section 8
❑ w/attachments
ti�[
Section 9
❑ w/attachments (e.g., responses for additional contact laboratories or firms)
Y
L
Section 10
❑
U
10.2
Certification Statement
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in
accordance with a system designed to assure that qualified personnel properly gather and evaluate the information
submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible
for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine
and imprisonment for knowing violations.
Name (print or type first and last name)
Official title
William K. Steinmetz
Environmental Compliance Specialist
Signature
Date signed
EPA Form 3510-21F (Revised 3-19) Page 6

DEPARTMENT OF HEALTH & HUMAN SERVICES
May 20, 2022
Ms. Brianna Young, Industrial Individual Permits Coordinator
Stormwater Program
NCDEQ / Division of Energy, Minerals and Land Resources (DEMLR)
1612 Mail Service Center
Raleigh, North Carolina 27699-1612
Dear Ms. Young:
Public Health Service
National Institutes of Health
National Institute of
Environmental Health Sciences
P. O. Box 12233
Research Triangle Park, NC 27709
Website: htto://www.niehs.nih.gov
RECEIVED
OEMLR-Stormwater Program
The NIEHS requests renewal of NPDES Stormwater Permit NCS000360. Two copies of the completed
application forms and supporting materials are enclosed for your review. The permit application package
includes NPDES Application Form 1, NPDES Application Form 2F as well as associated tables, maps,
and supplemental information.
Note that the data period covers the entire permit term, which began in September 2010. Also, facility
information in the Stormwater Permit Summary report for NIEHS was reviewed and updated in
accordance with your request. Please do not hesitate to contact me at [phone] if you have any
questions concerning this individual stormwater permit renewal application.
�Siinncerrellyy,
4Vifi/G�t
William K. Steinmetz
Environmental Compliance Specialist
Enclosures

EPA Identifrcafion Number
NPDES Permit Number
Fadlity Name
Form Approved 03/05119
110060508954
N CS000360
NIEHS
OMB No. M4040M
Form
U.S. Environmental Protection Agency
1
\G/EPA
Application for NPDES Permit to Discharge Wastewater
NPDES
GENERAL INFORMATION
REQUIRINGSECTION 1. ACTIVITIES .D ,1 and
1.1 Applicants Not Required to Submit Form 1
1.1.1
Is the facility a new or existing publicly owned
1.1.2
Is the facility a new or existing treatment works
treatment works?
treating domestic sewage?
If yes, STOP. Do NOT complete No
If yes, STOP. Do NOT No
Form 1. Complete Form 2A.
complete Form 1. Complete
Form 2S.
1.2
Applicants Required to Submit Form 1
1.2.1
Is the facility a concentrated animal feeding
1.2.2
Is the facility an existing manufacturing,
operation or a concentrated aquatic animal
commercial, mining, or silvicultural facility that is
v.
production facility?
currently discharging process wastewater?
o
Yes + Complete Form 1 DQ No
El Yes 4 Complete Form No
z
and Form 213.
1 and Form 2C.
1.2.3
Is the facility a new manufacturing, commercial,
1.2.4
Is the facility a new or existing manufacturing,
mining, or siivicultural facility that has not yet
commercial, mining, or silvicultural facility that
z
commenced to discharge?
discharges only nonprocess wastewater?
'
m
Yes 4 Complete Form 1 IQ No
Yes 4 Complete Form No
ac
and Form 2D.
1 and Form 2E.
2
;9
1.2.5 Is the facility a new or existing facility whose
discharge is composed entirely of stormwater
a
associated with industrial activity or whose
discharge is composed of both stonnwater and
non-stonnwater?
Yes 4 Complete Form 1 [] No
and Form 2F
unless exempted by
40 CFR
122.26(b)(14)(x) or
b 15 .
SECTION
2. NAME, MAILING ADDRESS, .1 CFR
2.1 Name
-Facility
National Institute of Environmental Health Sciences (NIEHS)
0
2.2
EPA Identification Number
8
110060508954
cw
2.3
Facility Contact
Name (first and last)
Title
Phone number
a
William K. Steinmetz
Environmental Compliance Specialist
984-287-3396
Email address
Steinme1 @niehs.nih.gov
aar
2A
Facility Mailing Address
c
Street or P.O. box
P.O. Box 12233 (MD FO-07)
City or town
State
ZIP code
Research Triangle Park
NC
27709
EPA Form 3510-1 (revised 3-19) Page 1

EPA ldenfifxetbn Number
NPDES Permft Number-
Fadlity Name
Fonn Approwd 0310119
110060508954
NCS000360
NIEHS
OMB No. 2040-0004
' m
2.5
Facility Location
>° c
Street, route number, or other specific identifier
a 0
111 T.W. Alexander Dr
A c
County name
County code (if known)
° W
Durham
E �
City or town
State ZIP code
z �,
Research Triangle Park
NC 27709
SECTION•r
r
3.1
SIC Code(s)
Description (optional)
9199
N
N
0
O
U
U
0
z
3.2
NAICS Code(s)
Description (optional)
v
923120
Administration of Public Health Programs
4.1
1Name of Operator
National Institute of Environmental Health Sciences (NIEHS)
`0
4.2
Is the name you listed in Item 4.1 also the owner9
E
❑ Yes ® No United States Government
_o
4.3
Operator Status
® Public —federal ❑ Public —state ❑ Other public (specify)
o
❑ Private ❑ Other
(specify)
4.4
Phone Number of Operator
984-287-3400
4.5
OperatorAddress
Street or P.O. Box
€ m
P.O. Box 12233 (MD FO-07)
F
City or town
State
ZIP code
0 0
Research Triangle Park
NC
27709
o
Email address of operator
[e-mail]
SECTION
5. r
• •I
5.1
Is the facility located on Indian Land?
C J
❑ Yes ® No
EPA Form 3510-1 (revised 3.19) Page 2

EPA Identification Number NPDES Permft Number Facility Name Form Approved 03105A9
110060508954 NCS000360 NIEHS OMB No. 2040-M
ENVIRONMENTALSECTION 6. EXISTING r
6.1 Existing Environmental Permits (check all that apply and print or type the corresponding permit number for each)
E]�
NPDES (discharges to surface
RCRA (hazardous wastes)
❑ UIC (underground injection of
e
ES A
water)
NCS000360
NC2750890004R2
fluids)
W d
❑ PSD (air emissions)
❑ Nonattainment program (CAA)
NESHAPs (CAA)
c
NCDAQ Permit, 04226R36
Z
❑ Ocean dumping (MPRSA) ❑ Dredge or fill (CWA Section 404) DQ Other (specify) Durham County
Industnal User Permit DG007
SECTIONm
7.1
Have you attached a topographic map containing all required information to this application? (See instructions for
W
specific requirements.)
[Yes []No ❑ CAFO—Not Applicable (See requirements in Form 2B.)
SECTIONOF
r
8.1
Describe the nature of your business.
The NIEHS is part of the National Institutes of Health. The NIEHS mission is to discover how
the environment affects people in order to promote healthier lives. Mission includes research
performed in onsite laboratory facilities and grant programs that support offsite research at
universities, hospitals, businesses, and other organizations around the country.
m
's
t
A
z
SECTION
••
r
9.1
Does your facility use cooling water?
❑ Yes M No + SKIP to Item 10.1.
3
9.2
Identify the source of cooling water. (Note that facilities that use a cooling water intake structure as described at
2
40 CFR 125, Subparts I and J may have additional application requirements at 40 CFR 122.21(r). Consult with your
—
NPDES permitting authority to determine what specific information needs to be submitted and when.)
m
8�
L
Not applicable
SECTIONr
VARIANCE
REQUESTSr r
10.1
Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(m)? (Check all that
apply. Consult with your NPDES permitting authority to determine what information needs to be submitted and
when.)
m
❑ Fundamentally different factors (CWA ❑ Water quality related effluent limitations (CWA Section
m
Section 301(n)) 302(b)(2))
A
❑ Non -conventional pollutants (CWA ❑ Thermal discharges (CWA Section 316(a))
Section 301(c) and (g))
Not applicable
EPA Form 3510.1 (revised 3-19) Page 3

EPA idendcation Number
NPDES Permit Number
Facility Name Form Approved 03/05/19
110060508954
NCS000360
N I EHS OMB No.2040-0004
SECTION
11. CHECKLIST
11.1
AND CERTIFICATION STATEMENT (40 CFR 122.22(a) and (d))
In Column 1 below, mark the sections of Form 1 that you have completed and are submitting with your application.
For each section, specify in Column 2 any attachments that you are enclosing to alert the permitting authority. Note
that not all applicants are required to provide attachments.
Column 1
Column 2
Dj Section 1: Activities Requiring an NPDES Permit
❑ w/ attachments
Section 2: Name, Mailing Address, and Location
❑ w/ attachments
Section 3: SIC Codes
❑ w/ attachments
Section 4: Operator Information
❑ wl attachments
DQ Section 5: Indian Land
❑ wl attachments
�[ Section 6: Existing Environmental Permits
❑ wl attachments
m
iE
DO Section 7: Map
/ topographic
W ww/ ❑ w/ additional attachments
D9 Section 8: Nature of Business
❑ w/ attachments
o
Dq Section 9: Cooling Water Intake Structures
❑ w/ attachments
,C
.o
Section 10: Variance Requests
❑ wl attachments
w
DQ Section 11: Checklist and Certification Statement
Elw/ attachments
x
11.2
Certification Statement
c�
1 certify under penalty of /aw that this document and all attachments were prepared under my direction or supervision
in accordance with a system designed to assure that qualfied personnel properly gather and evaluate the
information submitted. Based on my inquiry of the person or persons who manage the system, or those persons
directly responsible for gathering the information, the information submitted is, to the best of my knowledge and
belief, true, accurate, and complete. / am aware that there are significant penalties for submitting false information,
including the possibility of fine and imprisonment for knowing violations.
Name (print or type first and last name)
Official titre
William K. Steinmetz
Environmental Compliance Specialist
Signature
Date signed
20 ZO2 Z
EPA Form 3510-1(mVwd 349) Page 4

NIEHS - NPDES Application Form 1 / Section 7 Topographic Map

NIEHS (NCS000360) Permit Application Supplemental Information
I. Significant changes in NIEHS industrial activities
The Building 108 Waste Handling Facility is the NIEHS industrial activity that triggers individual stormwater
permitting in accordance with 40 CFR 122.26(b)(14) - Category Four (iv): Hazardous waste treatment, storage,
and disposal facilities. There have been no significant changes in industrial activities at the NIEHS Waste
Handling Facility during this stormwater permit term.
II. Statement of Operational Changes:
The following operational changes occurred during the current permit term.
Operational Updates (Additions):
2010 — A sulfuric acid (50%) storage tank with a 500-gallon capacity was installed inside Building 105. The
sulfuric acid is used as part of a reverse osmosis water treatment process. Deliveries occur about two or three
times per year and are limited to 375 gallons each. The storage tank is double walled for secondary containment
purposes. Supplies for responding to corrosive acid spills are stored at this site.
2016 — A diesel -fueled emergency generator with a 1600-gallon base tank was installed on the NIEHS Campus
just south of Building 102. Deliveries are infrequent and the base tank is double walled for secondary
containment purposes. This tank is covered by the NIEHS SPCC Plan.
2017 — The Building 110 Warehouse became operational in July 2017. The warehouse, located at 105 TW
Alexander Drive has a different physical address from the NIEHS Main Campus (111 TW Alexander Drive).
Warehouse activities include shipping and receiving via ground transport. There are no industrial activities at
this site. The warehouse is certified LEED platinum, which is due in part to minimal impervious surface.
A diesel -fueled emergency generator with a 500-gallon base tank provides backup power at the warehouse.
Fuel deliveries are infrequent, and the base tank is double walled for secondary containment purposes. Spill
supplies are stored at this location. This tank is covered by the NIEHS SPCC Plan.
2018 - A brine solution (sodium chloride) tank with a 3400-gallon capacity was installed to support a centralized
water softening system in the Building 105 central utility plant. The tank is located outside, southwest of
Building 105, in a concrete secondary containment basin that has a capacity of about 3700 gallons. The
containment release valves are kept locked except during drainage events. Rainwater is evaluated for
conductivity before each drainage event. Deliveries occur about two or three times per year.
2019 — A diesel -fueled emergency generator with a 137-gallon base tank was installed on the NIEHS Campus
near the Main Entrance Guardhouse. Deliveries are infrequent and the base tank is double walled for secondary
containment purposes. Spill supplies are stored at this location. This tank is covered by the NIEHS SPCC Plan.
Operational Updates (Deletions):
2016 - The 2000-gallon capacity E85 (85% ethanol / 15% gasoline) aboveground storage tank and associated
fuel dispensing station was removed from the NIEHS Campus. Tanker truck deliveries of E85 ended in 2010.
2017 — The 300-gallon capacity diesel fuel tank and associated emergency generator was removed from the east
side of Building 102.
III. Verification of Original Application Completeness:
All information submitted with the March 2015 renewal application was complete and correct. This current
renewal application covers the entire duration of the permit term from September 201P to the present.
V"I.Ir - 72-
"I(
'0/
William K. Steinmetz / NIEHS / Environm tal Compliance Specialist

EPA ldentifloation Number NPDES Permit Number Facility Name Forth Approved03105119
110060508954 NCS000360 I NIEHS OMB No. 2040-0004
Form U.S Environmental Protection Agency
2F \��EPA Application for NPDES Permit to Discharge Wastewater
NPDES A STORMWATER DISCHARGES ASSOCIATED WITH INDUSTRIAL ACTMTY
SECTIONOUTFALL LOCATION•r
1.1 Provide information on each of the facili s outfaUs in the table below
Outrall Receiving Water Name Latitude Longitude
Number
See attached Table '
0
U
O
N
O
SECTION• r
2.1 Are you presently required by any federal, state, or local authority to meet an implementation schedule for constructing,
upgrading, or operating wastewater treatment equipment or practices or any other environmental programs that could
affect the discharges described in this application?
❑ Yes X No 4 SKIP to Section 3.
2.2 Briefly identify each applicable project in the table below.
Brief Identification and Affected Outfalls Final Compliance Dates
Description of Project (listoulfall numbers) Source(s) of Discharge
Required Projected
Not Applicable
IE
m
e
n
E
2.3 Have you attached sheets describing any additional water pollution control programs (or other environmental projects
that may affect your discharges) that you now have underway or planned? (Optional Item)
❑ Yes (R( No Not Applicable
EPA Form 3510-2F (Revised 3-19) Page 1

EPA (dentifIcation
Number NPDES Permit Number Fadlity Name Form Approved 0=5119
110060508954
1 NCS000360 NIEHS OMB No.2040-0004
SECTION-.
.• .t CFR
a 3.1
w c C
c
Have you attached a site drainage map containing all required information to this application? (See instructions for
specific guidance.)
Yes See attached PowerPoint file ❑ No
4.1
Provide information on the facility's pollutant sources In the table below.
cutfall
Impervious Surface Area
Total Surface Area Drained
Number
(wbtn a mile radius of the fadlity)
(within a mile radius of the fadlny
specify units
specify units
See attached Table
specify units
spefaify units
specify units
specify units
specify units
specilj► units
Specify units
specify units
specify units
spe* units
4.2
Provide a narrative description of the facility's significant material in the space below. (See instructions for content
requirements.)
All materials stored outdoors in significant quantities are protected from exposure to stormwater through secondary containment basins,
double -walled tank structures, and covered storage. These materials include an outdoor storage capacity of 285.000 gallons of fuel oil for
emergency generators and boiler plant use along with 3400 gallons storage capacity of Brine solution for use in the water softening operation.
3.
N
Chemical pesticides are used only when absolutely necessary in accordance with Integrated Pest Management (IPM) principles and in a
manner that is safe to NIEHS personnel, wildlife, and the environment. No "Restricted Use" pesticides are used on the NIEHS Campus.
All personnel involved with fertilizer application must be certified through the COOP Extension Service. In addition, fertilizer is not applied
within 50 feet of campus waterbodles as per Jordan Lake buffer zone requirements. Herbicides are only used for spot treatment of noxious,
invasive, or aggressive weeds.
O
Ill
The Waste Handling Facility (WHF) stores dwmical waste from the NIEHS laboratories in preparation for disposal. The waste is packaged, labeled and placed
in secondary containment before being transported to the VMF. The waste storage areas in the WHF keep in ompatfbte materials separated and provide
secondary containment for stored containers. There are no floor drains in the chemical storage areas and the floors within each room are sloped to prevent
spill migration both from room to room and to the building exterior.
4.3
Provide the location and a description of existing structural and non-structural control measures to reduce pollutants in
stormwater runoff. See instructions forspecificguidance.)
Stomrwater Treatment
Codes
Outfall
Number
Control Measures and Treatment
from
Exhibit
2F 4
See Attached Table
EPA Form 3510-2F (Revised 3-19) page 2

EPA Identfication Number NPDES Permit Number Facft Name Form Approved 03105/19
110060508954 1 NCS000360 I NIEHS I OMB No.204MM
5.1
1 certify under penalty of law that the outfall(s) covered by this application have been tested or evaluated for the
presence of non stormwater discharges. Moreover, 1 certify that the outfalls ident fred as having nonstormwater
discharges are described in either an accompanying NPDES Form 2C, 2D, or 2E application.
Name (print or type first and last name)
Official title
William K. Steinmetz
Environmental Compliance Specialist
Signature
Date signed
Z'l� ►1•
C�� Z-z 2
I=
5.2
Provide the testing
information requested in the table below.
_
Outfail
Onsite Orange Points
o
Number
Description of Testing Method Used
Oate(s) of Testing
Directly Observed
Ourthg Test
m
See attached Table
0
z
6.1 Describe any significant leaks or spills of toxic or hazardous pollutants in the last three years.
c�.
There have been no significant leaks or spills of toxic or hazardous pollutants on
the NIEHS Campus in the last three years.
8
c
m
See the instructions to determine the pollutants and parameters you are required to monitor and, in turn, the tables you must
oI complete. Not all applicants need to complete each table.
€ 7.1 Is this a new source or new discharge?
❑ Yes 4 See instructions regarding submission of No 4 See instructions regarding submission of
•
estimated data. actual data.
L Tables A, B, Cl and D
i 7.2 Have you completed Table A for each outfall?
Yes See attached Table A historical data ❑ No
EPA Form 3510-2F (Revised 3.19) Page 3

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 0=5119
110060508954
NCS00036O
NIEHS
OMB No.2040MM
7.3
Is the facility subject to an effluent limitation guideline (ELG) or effluent limitations in an NPDES permit for its process
wastewater?
❑ Yes No 4 SKIP to Item 7.5.
7.4
Have you completed Table B by providing quantitative data for those pollutants that are (1) limited either directly or
indirectly in an ELG and/or (2) subject to effluent limitations in an NPDES permit for the facility's process wastewater?
❑ Yes M No Not applicable
7.5
Do you know or have reason to believe any pollutants in Exhibit 2F-2 are present in the discharge?
Yes ❑ No 4 SKIP to Item 7.7.
7.6
Have you listed all pollutants in Exhibit 2F-2 that you know or have reason to believe are present in the discharge and
provided quantitative data or an explanation for those pollutants in Table C?
See Table A and note that NIEHS
❑ Yes go No Table C pollutants are same as Table A
7.7
Do you qualify for a small business exemption under the criteria specified in the Instructions?
❑ Yes +SKIP to Item 7.18. No
7.8
Do you know or have reason to believe any pollutants in Exhibit 2F-3 are present in the discharge?
❑ Yes P( No 4 SKIP to Item 7.10.
7.9
Have you listed all pollutants in Exhibit 2F3 that you know or have reason to believe are present in the discharge in
Table C?
❑ Yes( No Not applicable
a.
7.10
Do you expect any of the pollutants in Exhibit 2F-3 to be discharged in concentrations of 10 ppb or greater?
ra
❑ Yes No 4 SKIP to Item 7.12.
101
7.11
Have you provided quantitative data in Table C for those pollutants in Exhibit 2F-3 that you expect to be discharged in
�
concentrations of 10 ppb or greater?
❑ Yes IX No Not applicable
cc
7.12
Do you expect acrolein, acrylonibile, 2,4-dinitrophenol, or 2-methyl-4,64nitrophenol to be discharged in concentrations
of 100 ppb or greater?
❑ Yes No 4 SKIP to Item 7.14.
7.13
Have you provided quantitative data in Table C for the pollutants identified in Item 7.12 that you expect to be
discharged in concentrations of 100 ppb or greater?
❑ Yes (( No Not applicable
7.14
Have you provided quantitative data or an explanation in Table C for pollutants you expect to be present in the
discharge at concentrations less than 10 ppb (or less than 100 ppb for the pollutants identified in Item 7.12)?
❑ Yes No Not applicable
7.15
Do you know or have reason to believe any pollutants in Exhibit 2F-4 are present in the discharge?
❑ Yes P( No 4 SKIP to Item 7.17.
7.16
Have you listed pollutants in Exhibit 2174 that you know or believe to be present in the discharge and provided an
explanation in Table C?
❑ Yes No Not applicable
7.17
Have you provided information for the storm event(s) sampled in Table D?
❑ Yes M[ No Not applicable
EPA Form 3510-2F (Revised 3-19) Page 4

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03A5119
110060508954
NCS000360
NIEHS
OMB No. 2040MM
o
Used or Manufactured Toxlcs
7.18
Is any pollutant listed on Exhibits 2F-2 through 2F-4 a substance or a component of a substance used or
manufactured as an intermediate or final product or byproduct?
❑ Yes iQ No 4 SKIP to Section 8.
e
0
7.19
List the pollutants below, including TCDD if applicable.
1• Not Applicable 4. 7.
m
EM
2. 5. 8.
t
0
0
3. 6. 9.
SECTION•
•GICAL TOXICITY TESTING DATA •r
8.1
Do you have any knowledge or reason to believe that any biological test for acute or chronic toxicity has been made on
any of your discharges or on a receiving water in relation to your discharge within the last three years?
0
c
❑ Yes No + SKIP to Section 9.
8.2
Identify the tests and their purposes below. Not applicable
Tags)
PurpoceofTest(s)
Submitted to NPDES
Date Submitted
Permitting Authority?
F
❑ Yes ❑ No
S
0
❑ Yes ❑ No
0
m
❑ Yes ❑ No
SECTION•
•• • •r
9.1
Were any of the analyses reported in Section 7 (on Tables A through C) performed by a contract laboratory or
consulting firm?
P4 Yes ❑ No 4 SKIP to Section 10.
9.2
Provide information for each contract laboratory or consulting firm below.
Laboratory Number 1
Laboratory Number 2
Laboratory Number 3
Name of laboratory/firm
e
0
ENCO Laboratories
w
—`�
Laboratory address
w
102-A Woodwinds IndustriE
I Ct.
W
Cary, NC 27511
Phone number
919-467-3090
Pollutant(s) analyzed
Aluminum
BOD
COD
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Form 3510-2F (Revised 3-19) Page 5

EPA tdenfrficatim Number
NPDES Permit Number Facility Name Form Approved 03105119
110060508954
NCS000360 NIEHS OMB No.204MIM
SECTIONi
10.1
- .i CFR
In Column 1 below, marls the sections of Form 2F that you have completed and are submitting with your application. For
each section, specify in Column 2 any attachments that you are enclosing to alert the permitting authority. Note that not
all applicants are required to oom lets all sections or pmvide attachments.
Column 1
Column 2
Section 1
Dg wl attachments (e.g., responses for additional outfalls)
❑ Section 2
❑ wl attachments
Section 3
wl site drainage map
Section 4
wl attachments
DO Section 5
wl attachments
Dq Section 6
❑ w/ attachments
Section T
Pq Table A ❑ w/small business exemption request
❑ Table B wl analytical results as an attachment
a
�gJ Table C ❑ Table D
❑ Section 8
❑ w/attachments
Section 9
❑ wlattachments (e.g., responses for additional contact laboratories or firms)
x
Section 10
❑
v
10.2
Certification Statement
1 certify under penalty of law that this document and all attachments were prepared under my direction or supervision in
accordance with a system designed to assure that qualified personnel properly gather and evaluate the information
submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible
for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of line
and imprisonment for !mowing violations.
Name (print or type first and last name)
Official titre
William K. Steinmetz
Environmental Compliance Specialist
Signature
Date signed
C5 za 2(�:) z z
EPA Form 3510-21F (Revised 3-19) page 6

2F Section 1.Outfall Location (40 CFR 122.21(g)(1))
Outfall Number
Location
Receiving Water Name
Latitude
Longitude
Monitoring Purpose
1
Building 108
UT to Burdens Creek
N 35° 52' 40.483"
W 780 52' 34.466"
Analytical + Visual
2
Building 105
UT to Burdens Creek
N 35° 52' 38.959"
W 78° 52' 36.097"
Analytical + Visual
3
Building 104
UT to Burdens Creek
N 350 52' 43.751"
W 780 52' 25.726"
Visual Only
4
Building 103
UT to Burdens Creek
N 35° 52' 41.028"
W 780 52' 25.408"
Visual Only
5
A -Dock
UT to Burdens Creek
N 350 52' 36.808"
W 780 52' 41.013"
Visual Only
6
South Lot
UT to Burdens Creek
N 35° 51' 56.128"
W 78° 52' 45.831"
Visual Only
7
North Lot
UT to Burdens Creek
N 350 53' 7.964"
W 780 52' 51.190"
Visual Only
8
F-Module
UT to Burdens Creek
N 350 53' 8.090"
W 780 52' 38.790"
Visual Only

2F Section 4: Pollutant Sources (40 CFR 122.26(c)(1)(1)(B))
Outfall Number
Location
Impervious Surface Area (ft)
Total Surface Area Drained (ft)
Percent Imprevious
1
Building 108
26605
42399
62.75
2
Building 105
46732
131160
35.63
3
Building 104
40941
82178
49.82
4
Building 103
23723
43306
54.78
5
A -Dock
10942
16004
68.37
6
South Lot
146112
249678
58.52
7
North Lot
231235
338211
68.37
8
F-Module
92331
249678
36.98

2F Section 4: Pollutant Sources (40 CFR 122.26(c)(1)(1)(13))
Outfall Number
Location
Structural Controls
Non Structural Controls
Exhibit 2F-1 Codes
Secondary Containment /Locked
Training /Delivery Procedures /Spill
1
Building 108
Drain Valves / Controlled Access /
Response Plans / Nearby Spill Supplies
Not Applicable
WHF Trench Drain Containment
Secondary Containment /Oil -Water
Training / Delivery Procedures /Spill
2
Building 105
Separators / Locked Drain Valves /
Response Plans / Nearby Spill Supplies
Not Applicable
Controlled Access
3
Building 104
Secondary Containment / Locked
Training / Spill Response Plans / Nearby
Not Applicable
Drain Valves / Controlled Access
Spill Supplies
4
Building 103
Secondary Containment / Locked
Training / Spill Response Plans / Nearby
Not Applicable
Drain Valves / Controlled Access
Spill Supplies
5
A -Dock
NA - Cafeteria Loading Dock
Training / Spill Response Plans / Visual
Not Applicable
Inspections
6
South Lot
NA - Employee Parking Lot
Training / Spill Response Plans
Not Applicable
7
North Lot
NA - Employee Parking Lot
Training / Spill Response Plans
Not Applicable
Secondary Containment / Oil -Water
Training /Delivery Procedures /Spill
8
F-Module
Separators / Locked Drain Valves /
Response Plans / Nearby Spill Supplies
Not Applicable
Sediment Basin

2F Section 5.2 Non-Stormwater Discharge Evaluation
Outfalls
Testing Method
Completion Dates
Drainage Points Observed
1-8
Visual evaluation during semiannual stormwater walkthrough
11/23-24/2010
All
1-8
Visual evaluation during semiannual stormwater walkthrough
05/13/2011
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/14/2011
All
1-8
Visual evaluation during semiannual stormwater walkthrough
03/28/2012
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/16-19/2012
All
1-8
Visual evaluation during semiannual stormwater walkthrough
03/26-29/2013
All
1-8
Visual evaluation during semiannual stormwater walkthrough
11/18-25/2013
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/23-28/2014
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/30-31/2014
All
1-8
Visual evaluation during semiannual stormwater walkthrough
03/31/2015
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/15/2015
All
1-8
Visual evaluation during semiannual stormwater walkthrough
03/21/2016
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/19/2016
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/10/2017
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/19/2017
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/30/2018
All
1-8
Visual evaluation during semiannual stormwater walkthrough
12/28/2018
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/05/2019
All
1-8
Visual evaluation during semiannual stormwater walkthrough
11/05/2019
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/03/2020
All
1-8
Visual evaluation during semiannual stormwater walkthrough
12/23/2020
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/27/2021
All
1- 8
Visual evaluation during semiannual stormwater walkthrough
12/07/2021
All

NIEHS Stormwater Monitoring History
SAMPLING YEAR 1 PERIOD #1
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH Aluminum
units) (mg/L)
BOD
(mglL)
COD
(mg/L)
Oil 8 Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mglL)
EPA Method 624 (VOC)
(mgtL)
EPA Method 625 (SVOC)
(mg/L)
02/28/2011
1st
1
108
0.62
8.40 3.610
3.2
45
ND
1.9
ND
ND
2
10 0.538
4.3
ND
0.105
D
3
104
7.40 0.393
2.4
29
ND
1.3
1 0.085
1 ND
Butylbenzylphthalate=2.2 ug/L
Stormwater Permit Benchmark Values 6.9 0.75 30 120 30 30
Notes: Sample Period #1, samples collected during severe thunderstorm, used RDU rainfall data
SAMP1 IN[7 YEAR 1 PFRIfNI $9
2 germane =6.7 Anthracene=.005
Toluene =.001 a Pentachlorophenol=.019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mglL)
BOD
(mg/L)
COD
(mg/L)
Oil 8 Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mglL)
08127/2011
2nd
1
108
0.54
7.450
020
2
N
ND
0.7
0.110
ND
NO
3
105
0.
9
0.120
ND0
2
104
7.40
1 0,155
ND
19
ND
1.2
0.054
ND
ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30
Notes: Sample Period #2, samples collected during Hurricane Irene, used RDU rainfall data
SAMPI ING YFAR 1 PFRIDD S2 /ROn RP_AAmnIPI
2 Benzene =6.7 Anthracene=.005
Toluene=.0018 Pentachlorophenol=.019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mglL)
BOD
(mg/L)
COD
(mg/1-)
Oil 8 Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mglL)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
09/06/2011
2nd
1
108
1.59
4.5
2
105
7.5
3
104
ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30
Notes: Stormwater samples recollected for BOD since 0812712011 samples exceeded 46-hour hold time, used RDU rainfall data
SAMPLING YEAR 2 PERIOD #1
2 Benzene =6.7 Anthracene=.005
Toluene=.0018 Pentachlorophenol=.019
Date
Sampling
Period'
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mg/L)
BOD
(mg/L)
COD
(mg/L)
Oil & Grease
(M91L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mglL)
EPA Method 625 (SVOC)
(mg/L)
12/21/2011
1st
1 1
108
0.25
1 7.80
10.472
2.2
23
ND
1.1
0.057
ND
2,4-Dinilrophenol=6.0 ug/L
Bis(2ethy1hexyl)phtha1a1e = 1.9 ugh
2
105
0.25
7.80
0.210
2.6
55
ND
1.2
0.088
ND
ND
3
1 104
0.25
7.70
0,283
ND
28
ND
1.5
0.074
ND
ND

Stormwater Permit Benchmark Values
SAMPLING YEAR 2 PERIOD #2
NIEHS Stormwater Monitoring History
6-9 0.75 30 120 30 30
2 Benzene=6.7 Anthracene=.005
Toluene =.001 8 Pentachlorophenol=.019
Date
Sampling
Periotl
I Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mglL)
BOD
(mg/L)
COD
(mg/L)
Oil 8,Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(m9/L)
EPA Method 624 (VOC)
(mg/
EPA Method 625 (SVOC)
(mglL)
04/26/2012
2nd
1
108
0.13
7.60
0.643
1 5.0
38
1 ND
1.2
0.072
NO
ND
2
105
0.13
7.60
0.294
4.6
1 55
1 NO
1.1
0.110
ND
ND
3
104
1 0.13
7.90
0,241
2.7
1 23
1 ND
1.3
0.120
ND
ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30
Notes. Sample Period #2, samples used nearby COCOPAHS rainfall data
SAMPLING YEAR 3 PERIOD #1
2 Benzene=6.7 Anthracene=.005
Toluene =.0018 Pentachlorophenol = .019
Date
Sampling Outfall
Period Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mg/L)
BOD COD
(mglL) (COD
011 & Grease
(mglL)
Total Nitrogen
(mglL)
Total Phosphorus
(mglL)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
02/07/2013
1st 1
108
0.87
6.90
0.894
11.0 56
ND
2.7
0.110
ND
ND
2
105
0.87
6.70
0.954
1 24.0 1 65
1 3.78
ji 3.3
0.220
ND
ND
3
104
0.87
6.90
0.316
1 3.0 1 28
1 ND
1 2.1
0.210
ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 3 PERIOD #2
6-9 0.75 30 120 30 30 2 Benzene=6.7 Anthracene = .005
Toluene =.001 8 Pentachlorophenol=.019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mglL)
BOO
(mg/L)
COD
(mg/L)
Oil & Grease
(mg/L)
Total Nitrogen
(mglL)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mglL)
EPA Method 625 (SVOC)
(mg/L)
O6/26/2013
2nd
1
108
1 0.27
7.00
0.277
6.1
35
ND
0.9
0.047
ND
NO
2
105
0.27
7.00
0.233
4.7
39
ND
2.1
0.150
ND
ND
3
1 104
0.27
7.00
1 0.143
1 2.5
37
ND
1.3
0.095
ND
Butylbenzylphmalale = 5.2 ug/L
Stormwater Permit Benchmark Values
SAMPLING YEAR 4 PERIOD #1
6-9 0.75 30 120 30 30 2 Benzene=6.7 Anthracene=.005
Toluene=.0018 Pentachlorophenol=.019
Date
Sampling
Period
I Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mglL)
BOO
(mg/L)
COD
(mg/L)
Oil 8 Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC) EPA Method 625 (SVOC)
(mg/L) (mg/L)
11/26/2013
1st
1
108
1.48
7.00
0.403
3.6
26
2.74
1.1
0.110
ND ND
2
105
1.48
1 7.00
0.218
19.0
47
ND
1.4
0.200
ND ND
3
104
1 1.48
1 7.00
0.154
3.2
20
NO
0.99
0,390
NO ND

Stormwater Permit Benchmark Values
CAMPI INf: WAR A PFRICNI !i9
NIEHS Stormwater Monitoring History
6-9 0.75 30 120 30 30
2 Benzene =6.7 Anthracene=.005
Toluene=.0018 Pentachlorophenol=.019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mglL)
BOD
(m91L)
COD
(mglL)
Oil 8 Grease
(mg1L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mglL)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
07/15/2014
2nd
1
108
3.52
8.90
0.262
ND
35
ND
1.5
0.090
ND
Bis(2-ethylhe�y0phlhalale=l.7u
2
105
3.52
6.70
0.301
12.0
40
ND
6
0.170
ND
&a(2alhylhexy0Phthalate =1.7u
3
104
3.52
6.90
0.789
5.4
25
ND
1.9
0.400
ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 5 PERIOD #1 (UPDATEDI
6.9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol=.019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
Precipitation
Field pH (pH
units)
Aluminum
(mg/L)
BOD
(mg/L)
COD
(mglL)
Oil & Grease
(mg L)
Total Nitrogen
(mglL)
Total Phosphorus
(mglL)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
02/09/2015
tat
1
108
1 0.62
8.20
1.000
9.2
61
ND
4.1
0.070
ND
ND
2
105
0.62
7.80
0.679
8.6
54
ND
4.6
0.098
ND
ND
3
104
0.62
7.80
2.130
5.0
56
ND
16
0.200
ND
ND
Stormwater Permit Benchmark Values
U1 M 1jgik iewl11:2i»:7 W e71YA
6-9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene=.005
Toluene-.0018 Pentachlorophenol=.019
Data
Sampling
Pe
Outfallriod
Number
Location
Precipitation
(Inches)
Field pH (pH
units)
Aluminum
(mglL)
BOD
(mg/L)
COD
(mglL)
Oil & Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mglL)
07/1912615
2nd
1
108
0.29
7.90
0.501
11.0
34
ND
1.6
0.081
ND
ND
2
105
0.29
7.10
0.186
5.2
47
ND
3.5
0.140
ND
Diethylphthelate=3.0 ug/L
3
104
D.29
6.80
0.398
6.7
34
1 ND
1.4
0.073
ND
Butylbenzyiphthalate=3.2 ug/L
Stormwater Permit Benchmark Values
SAMPLING YEAR 6 PERIOD #9
6.9 0.75 30 120 30 30 2 Benzene, -6.7 Anthracene=.005
Toluene-.0018 Pentachlorophenol=.019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mglL)
BOD
(mg/L)
COD
(mglL)
Oil 8 Grease
(mg/L)
Total Nitrogen
(mg&)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mglL)
EPA Method 625 (SVOC)
(m91L)
12/17/2015
1st
1
108
8.0
N.D
ND
ND
0.8
2
D
2
105
11.05
40
0.67409
26
16
ND
1.1
0.086
Z
1 Di-n-0uMphihalate =3.2 pgIL
3
104
1.05
1 7.90
1.630
3.3
29
ND
1.9
0.210
ND
ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene=.005
Toluene=.0018 Pentachlorophenol=.019

NIEHS Stormwater Monitoring History
SAMPLING YEAR 6 PERIOD #2
Data
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(ingil
BOO COO
(mg1L) (mg/L)
OII &Grease
(mglL)
Total Nitrogen
(mg/L)
Total Phosphorus
(mglL)
EPA Methotl 624 (VOC) EPA Method 625 (SVOC)
(mg/L) (mg1L)
07/30/2016
2nd
1
108
0.11
6.90
4.980
13.0 86
ND
2.2
0.460
ND ND
2
105
0.11
6.70
0.405
8.0 16
ND
2.4
0.120
ND Bulylbenzylphthalate=2.1 uglL
3
104
0.11
6.70
0.259
7.7 22
ND
2.6
0.043
1 ND IButylbenzylphthalale=9.2 pg1L
Stormwater Permit Benchmark Values
SAMPLING YEAR 7 PERIOD #1
6-9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene=.005
Toluene=.0018 Pentachlorophenol=.019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mg/L)
BOD
(ml
COD
(mg/L)
Oil & Grease
(mg/L)
Total Nitrogen
(mglL)
Total Phosphorus
(mg/L)
EPA Method fi24 (VOC)
(mglL)
EPA Method 625 (SVOC)
(mill
12/18/2016
1st
1
108
0.36
7.47
0.730
3.7
47
ND
1.4
0.055
ND
ND
2
105
0.36
7.22
0.338
8.5
41
ND
1.8
0.075
ND
ND
3
104
0.36
7.29
0.334
3.3
28
ND
1.8
0.025
1 ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 7 PERIOD #1 (BOD Resamolel
6-9 0.75 30 120 30 30 2 Benzene=6.7 Anthracene=.005
Toluene =.001 0 Pentachlorophenol=.019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mill
BOO
(BOO
COD
(mg/L)
Oil & Grease
(rl
Total Nitrogen
(mg/L)
Total Phosphorus
(mg/L
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
02/15/2017
1st
1
108
0.25
19.0
2
105
0.25
17.0
3
104
0.25
11.0
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30
Notes: Stormwater samples recollected for BOO since 1211a12016 samples would have required analytical action on 1212512016 (Christmas Day)
SAMPLING YEAR 7 PERIOD #2
2 Benzene=6.7 Anthracene=.005
Toluene=.0018 Pemachlorophenol=.019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(Inches)
Field pH (pH
units)
Aluminum
(mg/L)
BOD
(mg1L)
COD
(mg1L)
Oil & Grease
(mg/L)
Total Nitrogen
(mill
Total Phosphorus
(mg1L)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg1L)
O6I24I2017
2nd
1
108
1.20
7.43
2.230
6.6
49.4
ND
1.1
0.100
ND
ND
2
105
1.20
7.19
0.697
3.5
36.6
ND
1.6
0.360
ND
ND
3
104
1.20
6.87
2.310
6.0
38.7
2.44
1.2
0.410
ND
ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene=.005
Toluene=.0018 Pentachlorophenol=.019

NIEHS Stormwater Monitoring History
CARAW Ild(S VFAP A PFPlrtn dti
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(m91L)
BOD
(mgIL)
COD
(mgIL)
Oil 8 Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mgIL)
EPA Method 624 (VOC)
(mgIL)
EPA Method 625 (SVOC)
(mgIL)
01/28/2018
1st
1
108
1.33
8.22
1.760
3.8
23
ND
5.3
0.130
ND
ND
2
105
I.33
7.46
0.869
ND
25
ND
3.8
0.150
ND
ND
3
1 104
1.33
7.40
0.531
4.1
1 ND
ND
1.8
0.066
ND
ND
Stormwater Permit Benchmark Values
RAMPI ING YEAR 8 PERIOD 02
6.9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene = .005
Toluene =.001 8 Pentachlorophenol=.019
Sampling
Outfall
Precipitation
Fieltl pM (pH
Aluminum
BOD COD
Oil 8 Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Date
Period
Number
Location
(inches)
units)
(mgIL)
(mg/L) (mgIL)
(mgIL)
(mg/L)
(mgIL)
(mgIL)
(mgIL)
06I26I2018
L6��
2nd
1
108
1.12
7.81
0.304
7.1 25
ND
3.1
0.110
ND
ND
2
1 105
1.12
1 6.98
1 0.184
3.8 29
1 ND
8
0.130
ND
ND
Stormwater Permit Benchmark Values
Received approval from NCOEMLR inspector to end Outfall 3 sampling
RAMPI IN(A YFAR Q PFRIOn $1
6.9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene = .005
Toluene=.0018 Pentachlorophenal=.019
Sampling
Outfall
Precipitation
Field pH (pH
Aluminum
BOD
COD
Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Date
Period
Number
Location
(inches)
units)
(mgIL)
(mgIL)
(mgIL)
(mgIL)
(mgIL)
(mg/L)
(mg/L)
(mgIL)
12I20I2018
1st
1
1 108
1 0.56
8.92
0.711
44.0
96
ND
0.93
0.091
1 NO
ND
2
1 105
1 0.56
7.95
0.430
3.6
38
ND
0.90
0.130
1 ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 9 PERIOD #2
6.9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene=.005
Toluene =.0018 Pentachlorophenol =.01 9
Sampling
Outfall
Precipitation
Field pH (pH
Aluminum
BOO COD
Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Date
Period
Number
Location
(inches)
units)
(mg IL)
(mgIL) (mgIL)
(mg/L)
(mg/L)
(mg/L)
(mgIL)
(mgIL)
04/02/2019
2nd
1 1
1 108
1 0.37
6.62
1 0.871
140.0 360
ND
4.10
0.790
ND
ND
2
1 105
1 0.37
6.97
1 0.416
100.0 200
ND
5.40
0.610
ND
ND
Stormwater Permit Benchmark Values
6-9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene = .005
Toluene=.0018 Pentachlorophenol=.019
SAMPLING YEAR 10 PERIOD #1
Sampling Outfall Precipitation Field pH (pH Aluminum BOD COD Oil & Grease Total Nitrogen Total Phosphorus EPA Method 624 (VOC) EPA Method 625 (SVOC)
Data Period Number Location (inches) units) (mgIL) (mgIL) (mgIL) (mg/L) (mgIL) (mgIL) (mgIL) (mg/L)

NIEHS Stormwater Monitoring History
12/17/2019
1 1st
1 1
1 108
1 0.26
8.68
1 0.480
1 3.1
75
1 ND
1 2.00
0.190
1 ND
ND
2
105
0.26
8.12
0.626
3.2
44
ND
170.00
2.300
ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 10 PERIOD 92
6-9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene = .005
Toluene=.0018 Pentachlorophenol=.019
Date Sampling Outfall
Location Precipitation Field pH (pH
Aluminum
BOO
COD Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Period Number
(inches) units)
(mg/L)
(mg/L)
(mg/L) (mg/L)
(mglL)
(mg/L)
(mg/L)
05/27/2020 2nd 1
108 0.89 8.49
0.223
2.6
11 ND
0.81
ND
ND
ND
2
105 0.89 7.61
0.121
2.0
22 ND
2.30
ND
NO
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 11 PERIOD #1
6-9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene = .005
Toluene=.0018 Pentachlorophenol=.019
Date
Sampling
Outfall
Location
Precipitation
Field pH (pH
Aluminum
BOD
COD
Oil & Grease Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC) EPA Method 625 (SVOC)
Period
Number
(inches)
units)
(mg/L)
(mg/L)
(mgIQ
(mg/L) (mg/L)
(mglL)
(mg/L) (mg/L)
01/08/2021
1st
1 1
1 108
0.32
8.11
0.248
2.5
18
ND 0.61
ND
ND ND
2
1 105
0.32
8.28
0.265
NO
20
4.84 0.87
ND
NO ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 11 PERIOD #2
6-9 0.75 30 120 30 30 2 Benzene =6.7 Anthacene=.005
Toluene=.0018 Pentachloraphanol=.019
Date
Sampling
Outfall
Location
Precipitation
Field pH (pH
Aluminum
BOO
COD
Oil 8 Grease
Total Nitrogen Total Phosphorus
EPA Method 624 (VOC) EPA Method 625 (SVOC)
Period
Number
(inches)
units)
(mg/L)
(mg/L)
(mg/L)
(mGre
(mg/L) (mg1L)
(mg/ L) (mg/L)
06/02/2021
2nd
1
1 108
1 2.30
1 7.03
1 0.084
1 2.4
22
ND
0.78 ND
ND ND
2
1 105
1 2.30
1 6.95
1 0.129
1 4.0
28
1.58
1 1.10 1 0.280
NO ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 12 PERIOD #1
6.9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene=.005
Toluene=.0018 Pentachlorophenol=.019
Date
Sampling
Outfall
Location
Precipitation
Field pH (pH
Aluminum
BOD
COD
Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Period
Number
(inches)
units)
(mg/L)
(mail
(mg/L)
(mg/L)
(mg/L)
(mg/L)
(mg/L)
(mglL)
01I20/2022
1st
1
108
0.33
1 6.95
0.185
3.9
23
ND
0.75
0.110
1 ND
ND
2
105
0.33
1 6.40
0.104
2.2
17
NO
0.65
0.057
1 NO
ND
Stormwater Permit Benchmark Values
6.9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene=.005
Toluene =.0018 Pentachlorophenol=.019

NIEHS Stormwater Visual Monitoring Summary
Year 1 I Period I
Date Rainfall Outfall Building Color Odor Clarity Floatina Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
02/28/2011
0.62
A -Dock
101
Light Brown
None
2
2
3
No
No
Yes
South Lot
101
Light Brown
None
2
1
1
No
No
Yes
North Lot
101
Light Tan/Clay
None
2
2
2
No
No
Yes
F-Module
101
Light Tan
None
2
1
1
No
No
No
103
103
Light Brown
None
3
2
2
No
No
No
104
104
Light Brown
None
2
1
2
No
No
No
105
108
Light Brown
None
2
2
1
No
No
No
108
108
Light Brown
None
2
2
2
No
No
No
Year 1 I Period 2
Data Rainfall Outfall Building Color Odor Claritv Floatina Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
08/27/2011
0.54
A -Dock
101
Light Brown
None
2
2
1
No
No
Yes
South Lot
101
Light Brown
None
2
1
2
No
No
No
North Lot
101
Very Light Brown
None
1
1
2
No
No
No
F-Module
101
Light Brown
None
2
1
1
No
No
No
103
103
Light Brown
None
2
4
3
Yes
No
Yes
Contained leaf litter/grass clippings
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Clay
None
2
1
2
No
No
No
108
108
Light Brown
None
2
1
1
No
No
No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen ErosionlDeposition Other Indicators
11/04/20111 1.43 108 108 Light Gray None 2 1 2 No No No
Year 2/ Period 1
Date Rainfall Outfail Buildina Color Odor Claritv Floatina Solids Suspended Solids Foam Oil Sheen Erosion/Danosition Other Indicators
12/21/2011
0.25
A -Dock
101
Light Brown
None
2
1
2
No
No
No
South Lot
101
Very Light Brown
None
2
1
1
No
No
No
North Lot
101
Light Brown
None
2
2
2
No
Yes
Yes
Minor sheen / sediment deposition
F-Module
101
Light Brown
None
3
2
.2
No
No
No
103
103
Very Light Brown
None
1
1
1
No
No
No
104
104
Very Light Brown
None
1
1
1
No
No
No
105
108
Light Brown
None
2
1
2
No
No
No
108
108
Light Brown
None
1
2
2
No
No
No

Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
EroslonlDeposition Other Indicators
101/27/20121
0.22 1
108
108
Light Clay
None
2
2
2
No
No
No
Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
Erosion/Deposition Other Indicators
02/16/2012
0.25 1
108
108
Light Clay
None
3
2
2
No
No
No
Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
Erosion/Deposition Other Indicators
04/04/2012
1 0.62
108
108
Light Clay
None
2
1 2
No
No
No
Year 21 Period
2
Date
Rainfall
Outfall
Bulldino
Color
Ader
Clarity
FlnswOnn Celina ciiav%ft rinri s.,iw-
e.,ft..,
nu ea...,..
n.L__
04/26/2012
0.13
A -Dock
101
Light Clay
None
1
1
1
No
No
No
South Lot
101
Light Clay
None
1
1
1
No
No
No
North Lot
101
Medium Clay
None
3
1
1
No
No
No
F-Module
101
Medium Clay
None
3
1
1
No
No
No
103
103
Light Clay
None
2
1
1
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Clay
None
3
1
2
Yes
No
No
Foam caused by splashing
108
108
Light Clay
None
2
2
2
No
No
No
Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
Erosion/Deposition Other Indicators
05/09/2012
0.47
108
1 108
Light Gray
None
2
2
3
No
No
No
Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
Erosion/Deposition Other Indicators
06/11/2012
1.06
108
108
Light Brown
t - None
1 2
1 1
2
No
No
No
Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
ErosionlDeposltlon Other Indicators
07/20/2012
0.14
108
108A
Light Brown
None
2
1 1 1
1 1
No
No
No

Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
09/06/2012 1 0.55 108 108 Dark Brown None 2 1 1 1 3 1 No No I No
Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
Erosion/Deposition Other Indicators
111/13/20121
0.12 1
108
1 108 1
Very Light Gray
None
2
1
2
No
No
No
Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
ErosionlDeposition Other Indicators
12/12/2012
1 0.42
108
108
Light Clay
None
1
2
2
No
No
No
Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
Erosion/Deposition Other Indicators
12/20/2012
1 0.35
108
108
Light Clay
None
1
2
1 1
No
No
No
Year 3/ Period 1
nata Rainfall Outfall Buildinn Color Odor Claritv Floatina Solids Suspended Solids Foam Oil Sheen Erosion/Decosition Other Indicators
02/07/2013
0.87
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Clear
None
1
1
1
No
No
No
North Lot
101
Clear
None
1
1
1
No
No
No
F-Module
101
Clear
None
1
1
1
No
No
No
103
103
Clear
None
1
1
1
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Clay
None
2
1
1
No
No
No
108
108
Light Clay
None
2
1
1
No
No
No
Year 3 / Period 2
nata Rainfall Outfall Ruildino Color Odor Claritv Floatina Solids Suspended Solids Foam Oil Sheen Erosion/Decosition Other Indicators
06/26/2013
0.27
A -Dock
101
Very Light Clay
None
1
1
1
No
No
No
South Lot
101
Light Clay
None
2
1
1
No
No
No
North Lot
101
Light Clay
None
2
1
1
No
No
No
F-Module
101
Light Clay
None
2
1
1
No
No
No
103
103
Very Light Clay
None
2
1
1
No
No
No
104
104
Clear
None
1
2
1
No
No
No
105
108
Clear
None
2
2
1
No
No
No
108
108
Clear
None
2
2
1
No
No
No
Year 4 1 Period 1

Date Rainfall Outfall Buildina Color Oder Clarity Finatinn Snlide gmienanriari Qnlirla Rovam nil Cifnnn %.rncinM/iisnwci.iwn ^61 - 1-11 w.w
11/26/2013
1.48
A -Dock
101
Light Gray
None
1
1
2
No
No
No
South Lot
101
Light Brown
None
2
1
2
No
No
No
North Lot
101
Light Brown
None
1
1
3
No
No
No
F-Module
101
Light Gray
None
2
2
2
No
No
No
103
103
Clear
None
1
4
4
No
No
No
Leaf Litter
104
104
Clear
None
1
1
2
No
No
No
105
108
Light Brown
None
2
1
1
No
No
No
108
108
Light Brown
None
2
2
2
No
No
No
Year 4/ Period 2
Date Rainfall Outfall Building Color Odnr Clarity Finatinn Cnliric nil Chnnn w-iaww A61...- L..Ii....aw...
07/15/2014
3.52
A -Dock
101
Light Brown
None
2
2
1
No
No
No.
South Lot
101
Light Brown
None
2
1
1
No
No
No
North Lot
101
Light Orange
None
3
1
2
No
No
No
F-Module
101
Light Orange
None
2
1
1
No
No
No
103
103
Flooded/Overgrown - No Access
104
104
Very Light Brown
None
2
1
1
No
No
No
105
108
Very Light Brown
None
2
1
1
No
No
No
108
108
Light Brown
None
2
1
1
No
No
No
Year 51 Period 1
Date Rainfall Outfall Buildina Color Odor Clarity Finatinn snlirla Aiienanriari Snlirie Fnam nil Chaan R�ncinn/llnnnaiann n.hs. 1...1iwsMw.
02/09/2015
0.62
A -Dock
101
Light Brown
None
2
1
2
No
No
No.
South Lot
101
Light Gray
None
1
1
1
No
No
No
North Lot
101
Light Orange
None
2
1
2
No
No
Yes
F-Module
101
Light Orange
None
3
1
2
No
No
No
103
103
Light Gray
None
2
1
2
No
No
No
104
104
Light Brown
None
2
2
1
No
No
No
105
108
Light Brown
None
2
1
1
No
No
No
108
108
Light Brown
None
2
2
2
Yes
No
No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
04/30/2015 1 0.98 104 104 Brown None 3 1 2 1 3 1 No No I No
Tier 2 Visual
Date Rainfall Outfali Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators

105/19/20151 0.22 1 104 1 104 1 Light Orange I None 1 2 1 1 1 1 No I No I No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
06/01/2015 1 0.15 104 104 Light Orange None 1 1 1 1 1 1 No I No I No
Year 5/ Period 2
nata Rainfall nutfau Buildina Color
Odor Claritv Floatina Solids Susnended Solids Foam Oil Sheen Erosion/Deaosition Other Indicators
07/19/2015
0.29
A -Dock
101
Light Gray
None
2
2
2
No
No
No
South Lot
101
Light Orange
None
2
2
2
No
No
No
North Lot
101
Light Orange
None
2
1
1
No
No
Yes
F-Module
101
Light Orange
None
2
1
1
No
No
No
103
103
Light Gray
None
2
1
2
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Orange
None
2
1
2
No
No
No
108
108
Light Orange
None
2
1
2
No
No
No
Year 61 Period 1
nata Rainfall Outfall Ruildinn Color Odor Clarity Floatina Solids Susnended Solids Foam Oil Sheen Erosion/DeDosition Other Indicators
12/17/2015
1.05
A -Dock
101
Light Orange
None
2
1
2
No
No
No
South Lot
101
Light Orange
None
2
1
2
No
No
No
North Lot
101
Light Orange
None
3
1
3
No
No
No
F-Module
101
Light Orange
None
2
1
2
No
No
No
103
103
Light Orange
None
3
1
2
No
No
No
104
104
Light Orange
None
2
1
2
No
No
No
105
108
Light Brown
None
2
1
2
No
No
No
108
108
Light Brown
None
1
1
2
No
No
No
Year 61 Period 2
na#n Rainfall Autfall Rutidinn Color Odor Claritv Floatina Solids Susnended Solids Foam Oil Sheen Erosion/Denosition Other Indicators
07/30/2016
0.11
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Light Orange
None
2
1
2
No
No
No
North Lot
101
Light Brown
None
2
1
1
No
No
No
F-Module
101
Light Brown
None
2
1
1
No
No
No
103
103
Clear
None
1
1
1
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Orange
None
2
2
2
No
No
No
108
108
Light Orange
None
2
2
2
No
No
No

Year 71 Period 1
Date Rainfall Outfall Buildina Cnlnr ntinr e4ari4v Clna+inn Q^11A� :__n,__a___
12/18/2016
0.36
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Light Orange
None
2
2
2
No
No
No
North Lot
101
Light Orange
None
2
2
2
No
No
No
F-Module
101
Clear
None
1
1
1
No
No
No
103
103
Clear
None
1
2
2
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Orange
None
2
2
1
No
No
No
108
108
Light Orange
None
2
1
1
No
No
No
Year 71 Period 2
Date Rainfall Outfall Buildina Calar ndnr Clarity F1na+1nn Cn11rlc C_....s.._n1---- sas__ 0% L.
06/24/2017
1.20
A -Dock
101
Very Light Orange
None
2
1
1
No
No
No
South Lot
101
Light Orange
None
2
1
2
No
No
No
North Lot
101
Light Orange
None
2
1
1
No
No
No
F-Module
101
Orange
None
3
1
2
No
No
No
103
103
Flooded
104
104
Light Orange
None
2
1
1
No
No
No
105
108
Light Orange
None
2
1
1
No
No
No
108
108
Light Brown
None
2
1
2
No
No
No
Year a 1 Period 1
Date Rainfall Outfall Buildina Cnlnr neinr r_larifu Clnatinre C..- --A-A a —HA_ V__... Ail Qs.___ C___f__lf1____:a:__ naL__._1e__a___
01 /28/2018
1.33
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Light Orange
None
2
1
1
No
No
No
North Lot
101
Light Orange
None
2
1
1
No
No
-No
F-Module
101
Light Orange
None
2
1
2
No
No
No
103
103
Light Orange
None
2
1
1
Yes
No
No
Some bubbles / foam
104
104
Light Orange
None
2
1
1
No
No
No
105
108
Light Orange
None
2
1
1
No
No
No
108
108
Light Brown
None
2
1
1
No
No
No
Special Aluminum Study
Date . Rainfall Outf°ati Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
05/21/20181 2.75 1 108 108 Light Orange None 2 1 1 1 2 1 No No I No

105
108
Light Orange
None
3
1
2
No
No
No
Light Orange
None
1
1
1
No
No
No
108 Downstream
Medium Orange
None
3
1
3
No
No
No
105 Downstream
Light Orange
None
2
1 1
1 2
1 No
No
No
Combined stream
Year 81 Period 2
Data Rainfall Outfall Building Color Odor Claritv Floatina Solids Suspended Solids Foam Oil Sheen Erosion/Deoosition Other Indicators
06/26/2018
1.12
A -Dock
101
Light Gray
None
2
1
3
No
No
No
South Lot
101
Light Orange
None
2
2
1
No
No
No
Leaf debris
North Lot
101
Light Orange
None
2
2
1
No
No
No
F-Module
101
Clear
None
1
1
2
No
No
No
103
103
Light Orange
None
2
1
2
No
No
No
104
104
Light Orange
None
2
1
1
No
No
No
105
108
Clear
None
1
1
1
No
No
No
108
108
Light Orange
None
2
1 1
1 1
No
No
No
Year 91 Period 1
Data Rainfall Outfall Building Color Odor Clarity Floatina Solids Suspended Solids Foam Oil Sheen ErosionlDeposition Other Indicators
12/20/2018
0.56
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Light Gray
None
2
1
1
No
No
No
North Lot
101
Light Clay
None
2
1
2
No
No
No
F-Module
101
Light Clay
None
2
2
1
No
No
No
103
103
Light Clay
None
2
1
1
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Clay
None
1
1
1
No
No
No
108
108
Light Gray
None
1
1
2
No
No
No
Year 91 Period 2
Data Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen ErosionlDeposition Other Indicators
04/02/2019
0.37
A -Dock
101
Light Brown
None
2
1
1
No
No
No
South Lot
101
Light Yellow -Green
None
3
2
3
No
No
No
Pollen
North Lot
101
Light Yellow
None
2
1
1
No
No
No
Pollen
F-Module
101
Light Yellow -Green
None
3
3
3
No
No
No
Pollen
103
103
Light Yellow
None
2
1
1
No
No
No
Pollen
104
104
Light Yellow
None
2
1
1
No
No
No
Pollen
105
108
Light Yellow -Green
None
3
2
3
No
No
No
Pollen
108
1 108
Light Yellow -Green
None
1 3
1 3
1 3
1 No
No
No
Pollen

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North Lot
101
Light Orange
None
3
1
1
No
No
No
F-Module
101
Orange
None
4
1
3
No
No
No
103
103
Clear
None
1
1
1
No
No
No
104'
104
Clear
None
1
1
1
No
No
No
105
108
Clear
None
1
1
1
No
No
No
108
108
Clear
None
1
1
1
No
No
No
Heavy rain breached sediment
Year 121 Period 1
Date Rainfall Outfall Buildina Color Odor Clarity Floatino Solids Susnandad Sothic i=nam nil Shoran Frencinn/Menna;finn Mlker I...ii—a....�
01/20/2022
0.33
A -Dock
101
Clear
None
1
1
2
No
No
No
South Lot
101
Clear
None
1
1
1
No
No
No
North Lot
101
Light Orange
None
2
1
2
No
No
No
F-Module
101
Gray
None
3
1
3
No
No
No
103
103
Light Orange
None
2
1
1
Yes
No
No
Foam in downstream rocks
104
104
Clear
None
1
1
1
Yes
No
No
Foam in downstream rocks
105
108
Light Orange
None
1
1
1
No
No
No
108
1 108
1 Light Orange
None
1 2
1 1 1
1 1
Yes
No
No 1
Foam in downstream rocks

Tier One Reporting (Outfall #1)
Sample Data Location
Parameter
Result
Benchmark
Inspection Date Inspector
Tier One Response
2/28/2011 Building 108 Outfall
Aluminum
I 3.61 mg/L
1 0.75 mgfL
1 3/19/2011 1 Steinmetz
Possible Cause: Excess sod in the stormwaler conveyance system
Selected Action: Developed sample plan to determine aluminum source
Collected stonnwater and sod samples on 06/29/2011
Results from 06/29/2011 samples Indicate that local soil contains high levels of aluminum
Results also indicate that aluminum is leaching from sod Into stwmmter
Preventative Measures: Removed excess soil along curbing upstream from Bldg 108 ouaall
Tier Two Reporting (Outfall #1)
Sample Date I Location ) Parameter I Result I Benchmark I inspection Date I Inspector I Tier Two Response
Evaluate BMPs including stormwater drain inserts
January sample less than benchmark
February sample above benchmark / Nodded NCDWO RRO - Requested oulfall evaluation
NCDWO (Natalie Land") site visit to review BMg 108 oulfall - 03/22/2012
benchmark
endscape project officer to discuss staging area grour
mole above benchmark
I sample less than benchmark
mple lass than benchmark
sample less than benchmark
after three consecutive samples less than benchmark
Tier Two Monthly Sampling (Outfall #1)

Sample Date
Location
Parameter
Result (mglL)
mrk
Ba�m9/)a
Inspection Date
Inspector
Tier Two Response
11/4/2011
Building 108 Outfall
Aluminum
1.600
0.75
Steinmetz
November Monthly Sample
Building 108 Sluloeway
Aluminum
2.210
0.75
Steinmetz
Tier Two Response
Budding 108 Parking Lot
Aluminum
0.210
0.75
Steinmetz
Tier Two Response
12/21/2011
Building tog ouead
Aluminum
0.472
0.75
Steinmetz
December Monthly Sample (collected as semiannual)
01/27/2012
Building 108 Outfall
Aluminum
0.690
0.75
Steinmetz
January Monthly Sample
02/16/2012
Building 108 Outell
Aluminum
1 0.795
0.75
Steinmetz
February Monthly Sample
04/04/2012
Building 108 Oudall
Aluminum
0.580
0.75
Steinmetz
March Monthly Sample (collected In April)
04/26/2012
Budding 108 OuHall
Aluminum
0.643
0.75
Steinmetz
April Monthly Sample (collected with semkanual samples)
05/09/2012
Budding 108 Outfall
Aluminum
2.070
0.75
Steinmetz
May Monthly Sample
06/11/2012
Budding 108 Oulfan
Aluminum
1.030
0.75
Steinmetz
June Monthly Sample (Storm drain filter installed)
07/20/2012
Bustling 108 Curtail
Aluminum
1.580
0.75
Steinmetz
July Monthly Sample (Storm drain filler Installed)
09/06/2012
Budding toe outran
Aluminum
1.520
0.75
Steinmetz
August Monthly Sample (collected In September) (Filter removed)
11/13/2012
Bustling 108 Outfall
Aluminum
0.255
0.75
Steinmetz
September Monthly Sample (Collected In November)
12/12/2012
Budding 10801dfall
Aluminum
0.102
0.75
Steinmetz
October Monthly SampIs(Collected in December)
12/20/2012
Buddirg 108 Outfall
lAluminum
0.198
0.75
ISteirmetz
INovember
Monthly Sample (Collected In December)
Tier One Reporting (Outfall #7)
Sample Date
Location TParameter Result
Benchmark Inspection Date Inspector
Tier One Response
2/7/2013
Building 108 Oulfall I Aluminum 0.894 mo/L
0.75 mg/L 3/1/2013 Steinmetz
Possible Cause: Excess sand in the stormwater conveyance system from treating icy roads
Selected Action: Collected sod 8 sand samples on 00/29/2011
Results from 06/29/2011 samples indicate that sand used to Treat lay roads contains aluminum
Preventative Measures: Assure that sand is only applied to roads when needed to treat actual Icy conditions.
Also, remove roadside sediment buildup along the Power Alley curb as needed.
Tier One Reporting (Outfall #2)
Sample Date
Location TParameter
Result
Benchmark Inspection Date
Inspector
Tier One Response
2/7/2013
Building 105 Outfall I Aluminum
0.954 mg/L
0.75 mg/L 3/1/2013
Steinmetz
Possible Cause: Residual send in the Budding 102 contractor parking lot from beating icy roads
Selected Action: Collected sod & sand samples on 08r29/2011
Results from 08/29/2011 samples indicate that sand used to treat icy roads contains aluminum
Preventative Measures: Assure that sand Is only applied to roads when needed to treat actual icy conddiore
Tier One Reporting (Outfall #3)
C a.....1.. Mb. I ...�u.... p7nlei Dneulf Inen +1— nh,- 1 Ina —+-
1 Tine lion Dnsnnnen

7/15/2014 1 Building 104 Outfall I Aluminum 1 0.789 mg/L 0.75 mg/L 1 8/8/2014 1 Steinmetz Possible Cause: Soil erosion from very heavy rainfall event (3.52")
Selected Acton: Collected sol & sand samples on 06/29/2011
Results from 06/29/2011 samples indicate that area sails contain aluminum
Preventative Measures: Verified that sediment is not building up in the stormwater con eyance system
upstream from the sampling point. Aluminum levels above the benchmark at this outfall are considered to be an
Tier One Reporting (Outfall #1)
Sample Date
Location
Parameter
Result Benchmark
Inspection Date
Inspector
Tier One Response
2/9/2015
Building 108 Outfall
Aluminum
1.000 mg/L 0.75 mg/L
3/6/2015
Steinmetz
Possible Cause: Excess sand in the stomnwater conveyance system from treating Icy roads
Selected Action: Collected soil & sand samples on 06/29/2011
Results from 06/29/2011 samples indicate that sand used to treat Icy roads contains aluminum
Preventative Measures: Assure that sand is only applied to roads when needed to treat actual Icy conditions.
Also, remove roadside sediment buildup along the Power Alley curb as needed.
Tier Two Reporting (Outfall #3)
Sample Date Location Parameter Result Benchmark Inspection Date Inspector Tier Two Response
2/9/2015 1 Building 104 Outfall Aluminum 2.13 mg/L 0.75 mgf- 3/6/2015 Steinmetz Possible Cause: Pxmess sand in the slormwater conveyance system from treating Icy roads
Selected Acllon: Begin monthlysamples for aluminum in April 2015
Consider study of dovmstream aluminum levels
April sample above benchmark
05/18/2015 - Reinspected curbside and mad surfaces upstream from dhe Building 104 outlall. Very little sand
and sediment remains upstream of this oudall. Street cleaning is rat required at this time.
May sample below benchmark
June sample below benchmark
July sample below benchmark
07119=15 - MonOJy sampling ends after dyes consecutive samples less than benchmark
Tier Two Monthly Sampling (Outfall #3)
Sample Date
Location Parameter
Result (mg/L)
Benchmark
Inspection Date
Inspector Tier Two Response
4/30/2015
Al
Building 104 Outfall uminum
5.090
0.75
Steinmeti April Monthly Sample
5/19/2015
Building 104 Outfall Al UminUm
0.496
0.75
Steinmetz I May Monthly Sample

6/1/2015
IBulding 104 oetrall
Aluminum
0.670
0.75 Steinmetz
iJune Monthly Sample
7/19/2015
1BUlding 104 Oufrall
I Aluminum
0.398
0.75 Steinmetz
JJUIY Monthly Sample (Mordhly monitoring no longer required)
Tier One Reporting (Outfail #3)
Sample Date Location Parameter Result Benchmark Inspection Date Inspector
(mg/L) P p Tier One Response
(mg L)
12/17/20151 Building 104 Outfall I Aluminum 1.63 0.75 01/07/2016 1 Steinmetz Possible Cause: Soil erosion from heavy rainfall event(1.05')
Selected Action: Collected soil & sand samples on 06/29/2011
Results from 06/29/2011 samples Indicate that area soils contain aluminum
Preventative Measures: Vended that sediment is not building up in the stom ,ater conveyance system
upstream from the sampling point. Aluminum levels above the benchmark at this outfall are considered to be an
isolated event
Tier One Reporting (Outfall #1)
Sample Date Location Parameter Result Benchmark Inspection Date Inspector Tier One Response
7/30/2016 Building 108 Outfall Aluminum 4.93 mg/L 0.75 mg/L 1 8/31/2016 Steinmetz Possible Cause: Sol erosion from previous heavy rain events?
Selected Action: Collected soil & sand samples on 06/29/2011
Results from 06/29/2011 samples indicate that area soils contain aluminum
Preventative Measures: Continue visually monitoring roadside for buildup of soil and sand. Request removal if
warranted.
Tier One Reporting (Outfall #1)
Sample Date Location Parameter Result Benchmark Inspection Date Inspector Tier One Response
6/24/2017 Building 108 Outfall I Aluminum 1 2.23 mg/L 0.75 mg/L 7/13/2017 1 Steinmetz Possible Cause: Sol erosion from heavy min event
Selected Action: Collected sol & sad samples on OW912011
Results from 06/29/2011 samples indicate that area soils contain aluminum
Preventative Measures: Continue visually monaoring roadside for buildup of soil and sand. Submitted work
order request to remove sand/soil buildup upstream from Outfall #1.
Tier One Reporting (Outfall #3)
Sample Date Location
Parameter Result (mg/L) Benchmark Inspection Date Inspector
Tier One Response
6/24/2017 Building 104 Outfall
Aluminum 2.31 0.75 07/13/2017 Steinmetz
Possible Cause: Sol erosion from heavy rainfall event / possUe source is C & O dumpster stationed in
Building 104 loading dock area for renovation project.

Selected Aetton: Cdladed sod & Sand samples on 06/29/2011 1
Results from OS/29/2011 samoles indicate that area soils contain aluminum
ive Measures: Verified that sediment is not budding up in the stcnnwaler conveyance system
from the Sampling point. Aluminum levels above the benchmark at this outfall are considered to be an
rem. C & D dumpster should be removed from site after renovation project completion.
Tier One Reporting (Outfall #2)
Sample Date Location Parameter Result (mg/L) Be(nchm) * Inspection Date Inspector I Tier One Response Iin
1/28/2018 1 Building 105 Outfall I Aluminum 0.869 0.75 02/16/2018 Stelnmetz Possible Cause: Excess sand in the stormwater conveyance system from treating icy roads
Selected Action: Collected Sol & sand samples on 06/29/2011
Results from 06/29/2011 samples Indicate that area sails contain aluminum
Preventative Measures: Verified that sediment Is not building up in the stomnvaler conveyance system
upstream from the Sampling point. Aluminum levels above the benchmark at this outfall are considered to be an
isolated event.
Tier Two Reporting (Outfall #1)
Sample Date Location
Parameter
Result (mg/L)
Be(nmg L) rk Inspection Date Inspector
Tier Two Response
1/28/2018 1 Building 108 Outfall
I Aluminum
1.76
0.75 02/16/2018 1 Steinmetz
Possible Cause: Excess Sand in the stormwater conveyance system from treating icy roads
Selected Action: Collect receiving water Samples for aluminum to determine downstream Impacts.
Preventativemeasures: inspection revealed that some saw remains a org the roadway, which may have
increased levels of aluminum in stormwater
Tier Two Reporting (Receiving Water Study / Outfall #1)
Sample Date
Location
Parameter
Result (mg/L)
Benchmark
(mg5/22/2018
Tier Two Response
Building 108 Outfall
Aluminum
0.585
0.75
0.75
WtStelnmetz
PossibleCause: Natural aluminum source upstream and downstream from NIEHSoudalls
Selected Action: Collect receiving water samples for aluminum to determine downstream impacts.
Preventative Measures: Landscaping team thoroughly removed sediment from upstream areas using blowers
Building 105 Outfall
Aluminum
1.990
108/#1 Downstream
Aluminum
2.800
0.75
and brushes and flushed naturally with multiple rain events prior to sampling
Receiving water sampling results: Sampling indicates natural aluminum Source since concentrations
105/#2 Downstream
Aluminum
4.290
0.75
increased with distance from outfall
Merged Stream
Aluminum
5.730
0.75 Steinmetz
Notified NCDEQ that monthly Sampling vrould be dlacontimed as per receiving water study agreement.

Tier One Reporting (Outfal1 #1)
Sample Date
Location Parameter Result Benchmark
Inspection Date
Inspector
Tier One Response -
12/20/2018
1 Building 108 Outfall BOD 44 mg/L 30 mg/L
01/10/2019
Steinmetz
Possible Cause: Unknown, this is the first time 800 has exceeded benchmark
Selected Action: Visual inspection
Preventative Measures: Keep leaves and vegetative material from entering sample bottles
Tier Two Reporting (Outfall #1)
Sample Date
Location Parameter Result Benchmark
Inspection Date
Inspector
Tier Two Response
4/2/2019
1 Building 108 Outfall BOD 140 mg/L 30 mg/L
01/10/2019
1 Steinmetz
Possible Cause: Observed high levels of pollen In stomlwater sample
Selected Action: Begin monthly samples In May 2019
Preventative Measures: Avoid collecting samples from mid -March though late April when pollen count is high
Tier Two Monthly Sampling (Outfall #1)
Sample Date Location Parameter
Result (mg/L)
Benchmark
(mg06/20/2019
r
Tier Two Response
Outfall#1 BOD
07/23/2019 Outfall #1 BOD
7.10
10.00
z
z
June Monthly Sample(Rainfall=0.30")
July Monthly Sample (Rainfall = 1.16")
08/13/2019 Outfall #1 BOD
4.90
z
August Monthly Sample (Rainfall = 1.44")
3 Months Below Benchmark (Monthly monitoring no longer required)
Tier One Reporting (Outfall #2)
Sample Date Location
Parameter
Result Benchmark Inspection Date Inspector
Tier One Response
4/2/2019 Outfall #2
BOD
100 mail. 30 mg/L 04/18/2019 Steinmetz
Possible Cause: Observed high levels of pollen in stormwater sample
Selected Action: Visual impaction
Preventative Measures: Avoid collecting samples from mid -March through late April when pollen count Is high
Tier One Reporting (Outfall #1 & #2)
Sample Date( Location I Parameter I Result ) Benchmark ) Inspection Date Inspector
Tier One Response

4/2/2019
WWI #1
COD
360 me/L
120 mg/L
04/18/2019
Steinmetz
jPossible Cause: Observed high levels of pollen In stormwater sample
4/3/2019
Outfall #2
COD
200 mg/L
120 mgfL
04/18/2019
Steinmetz
ISelected Action: Visual Inspection
Preventative Measures: Avoid collecting samples from mid -March through late April when pollen count is high
Tier One Reporting (Outfall #2)
Sample Date
Location
Parameter
Result
Benchmark
Inspection Date
Inspector
Tier One Response
12/17/2019
Outfall #2
Nitrogen
170 mg/L
30 mg/L
01/06/2020
Steinmetz
Possible Cause: Unknown, this is the first time Nitrogen and Phos have exceeded benchmark
Oulfall #2
Total Phos
2.3 mglL
2 mg/L
01/06/2020
Steinmetz
Selected Action: Visual inspeclbn and personnel interview
Preventative Measures: Site Inspection did not reveal evidence of fertilizer spill or other chemical release.
Interviewed ORF landscaping COR and ORF 102 retaining well and 105 concrete drive construction project
COR. Neither were aware of any events that could have contributed to elevated stormwaler nitrogen and
phosphorus at Oudall #2. Requested that both CORs remind their contractors about spill response procedures
for petroleum and other chemicals including fertilizer

a

Stormwater Outfall Map Legend
Sewer
tS� Manhole - Location errors
• Manhole
Stormwater Drainage Features
■ Catch Basin
■ Catch Basin - Location errors
x Catch Basin -Abandoned
+ Headwall
f Headwall - Location errors
Headwall -Abandoned
• Other
• Other - Location errors
• Manhole
+ Manhole - Location errors
Storage Tanks -
■ Above ground storage tank, E85
■ Above ground storage tank, Fuel Oil
Above ground storage tank, Liquid CO2
Above ground storage tank, Liquid Nitrogen
Above ground storage tank, Oil Separator Tank
x Above ground storage tank, Oil Separator Tank, Abandoned
Above ground storage tank, Propane
► ► Flow Direction
Best Management Practices
Sanitary Sewer pipes
Storm Drain Pipes
—•--- Hydrology
'-Hater
_ Best Management Practices
NIEHS Hillshade
Elevation
High : 254
Low: 0

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Building 108 Outfall
ir
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Drainage Area: 42399.09ft=
Percentage Impervious: 62.75%
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105
Analytical & Visual Monitoring I

2F Section 1. Outfall Location (40 CFR 122.21(g)(1))
Outfall Number
Location
Receiving Water Name
Latitude
Longitude
Monitoring Purpose
1
Building 108
UT to Burdens Creek
N 35' 52' 40.483"
W 78' 52' 34.466"
Analytical + Visual
2
Building 105
UT to Burdens Creek
N 35' 52' 38.959"
W 78° 52' 36.097"
Analytical + Visual
3
Building 104
UT to Burdens Creek
N 35' 52' 43.751"
W 78' 52' 25.726"
Visual Only
4
Building 103
UT to Burdens Creek
N 35' 52' 41.028"
W 78° 52' 25.408"
Visual Only
5
A -Dock
UT to Burdens Creek
N 35' 52' 36.808"
W 78' 52' 41.013"
Visual Only
6
South Lot
UT to Burdens Creek
N 35' 51' 56.128"
W 78° 52' 45.831"
Visual Only
7
North Lot
UT to Burdens Creek
N 35' 53' 7.964"
W 78' 52' 51.190"
Visual Only
8
F-Module
UT to Burdens Creek
IN 35' ST 8.090"
W 78° 52' 38.790"
Visual Only

2F Section 4: Pollutant Sources (40 CFR 122.26(c)(1)(i)(B))
Outfall Number
Location
Impervious Surface Area (ft2)
Total Surface Area Drained (ftz)
Percent Imprevious
1
Building 108
26605
42399
62.75
2
Building 105
46732
131160
35.63
3
Building 104
40941
82178
49.82
4
Building 103
23723
43306
54.78
5
A -Dock
10942
16004
68.37
6
South Lot
146112
249678
58.52
7
North Lot
231235
338211
68.37
8
j F-Module
92331
249678
36.98

2F Section 4: Pollutant Sources (40 CFR 122.26(c)(1)(i)(B))
Outfall Number
Location
Structural Controls
Non Structural Controls
Exhibit 2F-1 Codes
Secondary Containment / Locked
Training /Delivery Procedures /Spill
1
Building 108
Drain Valves / Controlled Access /
Response Plans /Nearby Spill Supplies
Not Applicable
WHF Trench Drain Containment
Secondary Containment / Oil -Water
Training /Delivery Procedures /Spill
2
Building 105
Separators / Locked Drain Valves /
Response Plans / Nearby Spill Supplies
Not Applicable
Controlled Access
Secondary Containment / Locked
Training / Spill Response Plans / Nearby
3
Building 104
Drain Valves / Controlled Access
Spill Supplies
Not Applicable
Secondary Containment / Locked
Training / Spill Response Plans / Nearby
4
Building 103
Drain Valves / Controlled Access
Spill Supplies
Not Applicable
5
A -Dock
NA -Cafeteria Loading Dock
Training / Spill Response Plans / Visual
Not Applicable
Inspections
6
South Lot
NA - Employee Parking Lot
Training / Spill Response Plans
Not Applicable
7
North Lot
NA - Employee Parking Lot
Training / Spill Response Plans
Not Applicable
Secondary Containment / Oil -Water
Training /Delivery Procedures /Spill
8
F-Module
Separators / Locked Drain Valves /
Response Plans / Nearby Spill Supplies
Not Applicable
Sediment Basin

2F Section 5.2 Non-Stormwater Discharge Evaluation
Outfalls
Testing Method
Completion Dates
Drainage Points Observed
1-8
Visual evaluation during semiannual stormwater walkthrough
11/23-24/2010
All
1-8
Visual evaluation during semiannual stormwater walkthrough
05/13/2011
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/14/2011
All
1-8
Visual evaluation during semiannual stormwater walkthrough
03/28/2012
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/16-19/2012
All
1-8
Visual evaluation during semiannual stormwater walkthrough
03/26-29/2013
All
1-8
Visual evaluation during semiannual stormwater walkthrough
11/18-25/2013
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/23-28/2014
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/30-31/2014
All
1-8
Visual evaluation during semiannual stormwater walkthrough
03/31/2015
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/15/2015
All
1-8
Visual evaluation during semiannual stormwater walkthrough
03/21/2016
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/19/2016
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/10/2017
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/19/2017
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/30/2018
All
1-8
IVisual evaluation during semiannual stormwater walkthrough
12/28/2018
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/05/2019
All
1-8
Visual evaluation during semiannual stormwater walkthrough
11/05/2019
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/03/2020
All
1-8
Visual evaluation during semiannual stormwater walkthrough
12/23/2020
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/27/2021
All
1-8
Ivisual evaluation during semiannual stormwater walkthrough
12/07/2021
All

NIEHS Stormwater Monitoring History
SAMPLING YEAR 1 PERIOD #1
Date
Sampling
Period
Outfall
Number
Precipitation
Location (inches)
Field pH (pH Aluminum
units) (mg/L)
BOD COD
(mg/L) (mglL)
Oil & Grease Total Nitrogen
(mg/L) (mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC) EPA Method 625 (SVOC)
(mglL) (mg/L)
02/28/2011
1st
1
108 0.62
8.40
3.2 45
ND 1.9
0.190
ND ND
2
105
7.10 0.538
4.3 30
ND 3.9
0.130
ND ND
3
104
7.40 0.393
2.4 29
ND 1.3
0.085
ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30
Notes: Sample Period #1, samples collected during severe thunderstorm, used RDU rainfall data
SAMPLING YEAR 1 PERIOD #2
2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling
Period
Outfall
Number Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mg/L)
BOD
(mg/L)
COD
(mg/L)
Oil & Grease
(mg/L)
Total Nitrogen Total Phosphorus
(mg/L) (mg/L)
EPA Method 624 (VOC) EPA Method 625 (SVOC)
(mg/L) (mg/L)
08/27/2011
2nd
1 108
0.54
7.50
1.020
2.1
32
ND
0.73 0.110
ND ND
3 105
7.40
0.085
ND
28
ND
2.9 0.120
ND ND
2 104
7.40
0.155
ND
19
ND
1.2 0.054
ND ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30
Notes: Sample Period #2, samples collected during Hurricane Irene, used RDU rainfall data
SAMPLING YEAR 1 PERIOD #2 (BOD Resamole)
2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Sampling Outfall
Date Period Number
Location
Precipitation
(inches)
Field pH (pH Aluminum BOD
units) (mg/L) (mg/L)
COD Oil & Grease
(mg/L) (mg/L)
Total Nitrogen Total Phosphorus
(mg/L) (mg/L)
EPA Method 624 (VOC) EPA Method 625 (SVOC)
(mg/L) (mg/L)
09/06/2011 2nd 1
108
1.59
4.5
2
105
7.5
3
104
ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30
Notes: Stormwater samples recollected for BOD since 0812712011 samples exceeded 48-hour hold time, used RDU rainfall data
SAMPLING YEAR 2 PERIOD #1
2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling Outfall
Period Number Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mg/L)
BOD COD
(mg/L) (mg/L)
Oil & Grease Total Nitrogen Total Phosphorus EPA Method 624 (VOC)
(mg/L) (mg/L) (mg/L) (mg/L)
EPA Method 625 (SVOC)
(mg/L)
12/21/2011
1st 1 108
0.25
7.80
0.472
2.2 23
ND 1.1 0.057 ND
2,4-Dinitrophenol - 6.0 ug/L
Bis(2-ethy1hexy1)phtha1ate = 1.9 ug/
2
105
0.25
7.80
0.210
2.6
55
ND
1.2
0.088
ND
ND
3
104
0.25
7.70
0.283
ND
28
ND
1.5
0.074
ND
ND

Stormwater Permit Benchmark Values
SAMPLING YEAR 2 PERIOD #2
NIEHS Stormwater Monitoring History
6-9 0.75 30 120 30 30
2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling Outfall
Period Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mg/L)
BOD
(mg/L)
COD
(mg/L)
Oil & Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
04/26/2012
2nd 1
108
0.13
7.60
0.643
5.0
38
ND
1.2
0.072
ND
ND
2
105
0.13
7.60
0.294
4.6
55
ND
1.1
0.110
ND
ND
3
104
0.13
7.90
0.241
2.7
23
ND
1.3
0.120
ND
ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30
Notes: Sample Period #2, samples used nearby COCORAHS rainfall data
SAMPLING YEAR 3 PERIOD #1
2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Sampling Outfall
Date Period Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mg/L)
BOD
(mg/L)
COD
(mg/L)
Oil & Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
02/07/2013 1st 1
108
0.87
6.90
0.894
11.0
56
ND
2.7
0.110
ND
ND
2
105
0.87
6.70
0.954
24.0
65
3.76
3.3
0.220
ND
ND
3
104
0.87
6.90
0.316
3.0
28
ND
2.1
0.210
ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 3 PERIOD #2
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mg/L)
BOD
(mg/L)
COD
(mg/L)
Oil & Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
06/26/2013
2nd
1
108
0.27
7.00
0.277
6.1
35
ND
0.9
0.047
ND
ND
2
105
0.27
7.00
0.233
4.7
39
ND
2.1
0.150
ND
ND
3
104
0.27
7.00
0.143
2.5
37
ND
1.3
0.095
ND
Butylbenzylphthalate = 5.2 ug/L
Stormwater Permit Benchmark Values
SAMPLING YEAR 4 PERIOD #1
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling Outfall
Period Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mg/L)
BOD
(mg/L)
COD
(mg/L)
Oil & Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
11/26/2013
1st 1
108
1.48
7.00
0.403
3.6
26
2.74
1.1
0.110
ND
ND
2
105
1.48
7.00
0.218
19.0
47
ND
1.4
0.200
ND
ND
3
104
1.48
7.00
0.154
3.2
20
ND
0.99
0.390
ND
ND

Stormwater Permit Benchmark Values
SAMPLING YEAR 4 PERIOD #2
NIEHS Stormwater Monitoring History
6-9 0.75 30 120 30 30
2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling
Period
Outfall
Number Location
Precipitation
inches
Field pH (pH
units
Aluminum
m /L
BOD
m /L
COD
m /L
Oil & Grease Total Nitrogen
m /L m /L
Total Phosphorus
m /L
EPA Method 624 (VOC)
m /L
EPA Method 625 (SVOC)
m /L
07/15/2014
2nd
1 108
3.52
6.90
0.282
ND
35
ND 1.5
0.090
ND
Bis(2-ethy1hexy1)phtha1ate = 1.7 ug/
2 105
3.52
6.70
0.301
12.0
40
ND 0.63
0.170
ND
Bis(2-ethy1hexy1)phtha1ate = 1.7 ug/
3 104
3.52
6.90
5.4
25
ND 1.9
0.400
ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 5 PERIOD #1 (UPDATED)
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling Outfall
Period Number
Location
Precipitation
(inches)
Field pH (pH Aluminum
units) (mg/L)
BOD
(mg/L)
COD
(mg/L)
Oil & Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
02/09/2015
1st 1
108
0.62
8.20
9.2
61
ND
4.1
0.070
ND
ND
2
105
0.62
7.80 1 0.679 1
8.6
54
ND
4.6
0.098
ND
ND
3
104
0.62
7.80
5.0
56
ND
16
0.200
ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 5 PERIOD #2
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mg/L)
BOD
(mg/L)
COD
(mg/L)
Oil & Grease Total Nitrogen
(mg/L) (mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
07/19/2015
2nd
1
108
0.29
7.90
0.501
11.0
34
ND 1.6
0.081
ND
ND
2
105
0.29
7.10
0.166
5.2
47
ND 3.5
0.140
ND
Diethylphthalate = 3.0 ug/L
3
104
0.29
6.80
0.398
6.7
34
ND 1.4
0.073
ND
Butylbenzylphthalate = 3.2 ug/L
Stormwater Permit Benchmark Values
SAMPLING YEAR 6 PERIOD #1
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling Outfall
Period Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mg/L)
BOD
(mg/L)
COD
(mg/L)
Oil & Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
12/17/2015
1st 1
108
1.05
8.70
0.608
ND
ND
ND
0.88
0.028
ND
ND
2
105
1.05
8.40
2.6
16
ND
1.1
0.066
ND
Di-n-butylphthalate = 3.2 µg/L
3
104
1.05
7.90
3.3
29
ND
1.9
0.210
ND
ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019

NIEHS Stormwater Monitoring History
SAMPLING YEAR 6 PERIOD #2
Date
Sampling Outfall
Period Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mg/L)
BOD
(mg/L)
COD
(mg/L)
Oil & Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
07/30/2016
2nd 1
108
0.11
6.90
13.0
86
ND
2.2
0.460
ND
ND
2
105
0.11
6.70
0.405
8.0
16
ND
2.4
0.120
ND
Butylbenzylphthalate = 2.1 µg/L
3
104
0.11
6.70 1
0.259
7.7
22
ND
2.6
0.043
ND
Butylbenzylphthalate = 9.2 pg/L
Stormwater Permit Benchmark Values
SAMPLING YEAR 7 PERIOD #1
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling Outfall
Period Number
Precipitation
Location (inches)
Field pH (pH Aluminum BOD
units) (mg/L) (mg/L)
COD
(mg/L)
Oil & Grease Total Nitrogen
(mg/L) (mg/L)
Total Phosphorus EPA Method 624 (VOC)
(mg/L) (mg/L)
EPA Method 625 (SVOC)
(mg/L)
12/18/2016
1st 1
108 0.36
7.47 0.730 3.7
47
ND 1.4
0.055 ND
ND
2
105 0.36
7.22 0.338 8.5
41
ND 1.8
0.075 ND
ND
3
104 0.36
7.29 0.334 3.3
28
ND 1.8
0.025 ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 7 PERIOD #1 (BOD Resamole)
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH Aluminum BOD
units) (mg/L) (mg/L)
COD Oil & Grease Total Nitrogen
(mg/L) (mg/L) (mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
02/15/2017
1 St
1
108
0.25
19.0
2
105
0.25
17.0
3
104
0.25
11.0
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30
Notes: Stormwater samples recollected for BOD since 1211812016 samples would have required analytical action on 1212512016 (Christmas Day)
SAMPLING YEAR 7 PERIOD #2
2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling Outfall
Period Number
Precipitation Field pH (pH Aluminum BOD
Location (inches) units) (mg/L) (mg/L)
COD
(mg/L)
Oil & Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC) EPA Method 625 (SVOC)
(mg/L) (mg/L)
06/24/2017
2nd 1
108 1.20 7.43 6.6
49.4
ND
1.1
0.100
ND ND
2
105 1.20 7.19 0.697 3.5
36.6
ND
1.6
0.360
ND ND
3
104 1.20 6.8 2.310,M 6.0
38.7
2.44
1.2
0.410
ND ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019

NIEHS Stormwater Monitoring History
SAMPLING YEAR 8 PERIOD #1
Date
Sampling Outfall
Period Number
Location
Precipitation
(inches)
Field pH (pH Aluminum
units) (mg/L)
BOD
(mg/L)
COD
(mg/L)
Oil & Grease
(mg/L)
Total Nitrogen
(mg/L)
Total Phosphorus
(mg/L)
EPA Method 624 (VOC)
(mg/L)
EPA Method 625 (SVOC)
(mg/L)
01/28/2018
1st 1
108
1.33
8.22
3.8
23
ND
5.3
0.130
ND
ND
2
105
1.33
1
ND
25
ND
3.8
0.150
ND
ND
3
1 104
1.33
7.40 1 0.531 1
4.1
ND
ND 11.8
0.066
ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 8 PERIOD #2
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Sampling Outfall
Date
Precipitation
Location
Field pH (pH
Aluminum
BOD
COD
Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Period Number
(inches)
units)
(mg/L)
(mg/L)
(mg/L)
(mg/L)
(mg/L)
(mg/L)
(mg/L)
(mg/L)
06/26/2018 2nd 1
108 1.12
7.81
0.304
7.1
25
ND
3.1
0.110
ND
ND
2
105 1.12
6.98
0.184
3.8
29
ND
8
0.130
ND
ND
Stormwater Permit Benchmark Values
Received approval from NCDEMLR inspector to end Outfall 3 sampling
SAMPLING YEAR 9 PERIOD #1
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling Outfall
Precipitation Field pH (pH Aluminum BOD
Location
COD Oil & Grease Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC) EPA Method 625 (SVOC)
Period Number
(inches) units) (mg/L) (mg/L)
(mg/L) (mg/L) (mg/L)
(mg/L)
(mg/L) (mg/L)
12/20/2018
1st 1
108 0.56 8.92 0.711
96 ND 0.93
0.091
ND ND
2
105 0.56 7.95 0.430 3.6
38 ND 0.90
0.130
ND ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 9 PERIOD #2
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling Outfall Precipitation
Location
Field pH (pH Aluminum BOD
COD
Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Period Number (inches)
inches
units m /L m /L
) ( 9 ) ( 9 )
m /L
( 9 )
m /L
( 9 )
m /L
( 9 )
m /L
( 9 )
m /L
( 9 )
m /L
( 9 )
04/02/2019
2nd 1 108 0.37
6.62
ND
4.10
0.790
ND
ND
2 105 0.37
6.97 0.416
ND
5.40
0.610
ND
ND
Stormwater Permit Benchmark Values
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
SAMPLING YEAR 10 PERIOD #1
Sampling I Outfall Precipitation Field pH (pH Aluminum BOD COD Oil & Grease Total Nitrogen Total Phosphorus EPA Method 624 (VOC) EPA Method 625 (SVOC)
Date period Number Location (inches) units) (mg/L) (BOD)
(COD)
(mglL) (mglL) (mglL) (mg/L) (mglL)

NIEHS Stormwater Monitoring History
12/17/2019
1 1st
1 1
1 108
1 0.26
1 8.68
1 0.480
1 3.1
1 75
1 ND
1 2.00 1 0.190 ND
ND
2
1 105
1 0.26
1 8.12
1 0.626
1 3.2
1 44
1 ND
I W ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 10 PERIOD #2
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling Outfall
Precipitation Field pH (pH Aluminum BOD
Location
COD Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC) EPA Method 625 (SVOC)
Period Number
(inches) units) (mg/L) (mg/L)
(mg/L) (mg/L)
(mg/L)
(mg/L)
(mg/L) (mg/L)
05/27/2020
2nd 1
108 0.89 8.49 0.223 2.6
11 ND
0.81
ND
ND ND
2
105 0.89 7.61 0.121 2.0
22 ND
2.30
ND
ND ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 11 PERIOD #1
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling Outfall
Precipitation
Location
Field pH (pH
Aluminum
BOD
COD
Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Period Number
(inches)
units)
(mg/L)
(mg/L)
(mg/L)
(mg/L)
(mg/L)
(mg/L)
(mg/L)
(mg/L)
01/08/2021
1st 1
108 0.32
8.11
0.248
2.5
18
ND
0.61
ND
ND
ND
2
105 0.32
8.28
0.265
ND
20
4.84
0.87
ND
ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 11 PERIOD #2
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling Outfall
Precipitation Field pH (pH Aluminum BOD
Location
COD Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC) EPA Method 625 (SVOC)
Period Number
(inches) units) (mg/L) (mg/L)
(mg/L) (mg/L)
(mg/L)
(mg/L)
(mg/L) (mg/L)
06/02/2021
2nd 1
108 2.30 7.03 0.084 2.4
22 ND
0.78
ND
ND ND
2
105 2.30 6.95 0.129 4.0
28 1.58
1.10
0.280
ND ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 12 PERIOD #1
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling Outfall
Precipitation Field pH (pH Aluminum BOD
Location
COD Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC) EPA Method 625 (SVOC)
Period Number
(inches) units) (mg/L) (mg/L)
(mg/L) (mg/L)
(mg/L)
(mg/L)
(mg/L) (mg/L)
01/20/2022
1st 1
108 0.33 6.95 0.185 3.9
23 ND
0.75
0.110
ND ND
2
105 0.33 6.40 0.104 2.2
17 ND
0.65
0.057
ND ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019

NIEHS Stormwater Visual Monitoring Summary
Year 1 / Period 1
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
02/28/2011
0.62
A -Dock
101
Light Brown
None
2
2
3
No
No
Yes
South Lot
101
Light Brown
None
2
1
1
No
No
Yes
North Lot
101
Light Tan/Clay
None
2
2
2
No
No
Yes
F-Module
101
Light Tan
None
2
1
1
No
No
No
103
103
Light Brown
None
3
2
2
No
No
No
104
104
Light Brown
None
2
1
2
No
No
No
105
108
Light Brown
None
2
2
1
No
No
No
108
1 108
1 Light Brown
None
1 2
1 2
1 2
1 No
No
No
Year 1 / Period 2
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
08/27/2011
0.54
A -Dock
101
Light Brown
None
2
2
1
No
No
Yes
South Lot
101
Light Brown
None
2
1
2
No
No
No
North Lot
101
Very Light Brown
None
1
1
2
No
No
No
F-Module
101
Light Brown
None
2
1
1
No
No
No
103
103
Light Brown
None
2
4
3
Yes
No
Yes
Contained leaf litter/grass clippings
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Clay
None
2
1
2
No
No
No
108
1 108
1 Light Brown
None
1 2
1 1
1 1
1 No
No
No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
11/04/2011 1.43 1 108 1 108 1 Light Gray None 1 2 1 1 12 1 No No I No
Year 2 / Period 1
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
12/21/2011
0.25
A -Dock
101
Light Brown
None
2
1
2
No
No
No
South Lot
101
Very Light Brown
None
2
1
1
No
No
No
North Lot
101
Light Brown
None
2
2
2
No
Yes
Yes
Minor sheen / sediment deposition
F-Module
101
Light Brown
None
3
2
2
No
No
No
103
103
Very Light Brown
None
1
1
1
No
No
No
104
104
Very Light Brown
None
1
1
1
No
No
No
105
108
Light Brown
None
2
1
2
No
No
No
108
1 108
1 Light Brown
None
1 1
1 2
1 2
1 No
No
No

Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
01/27/2012 1 0.22 1 108 1 108 Light Clay None 2 1 2 12 1 No I No I No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
02/16/2012 1 0.25 1 108 1 108 Light Clay None 3 1 2 1 2 1 No I No I No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
04/04/2012 1 0.62 1 108 1 108 Light Clay None 2 1 1 12 1 No I No I No
Year 2 / Period 2
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
04/26/2012
0.13
A -Dock
101
Light Clay
None
1
1
1
No
No
No
South Lot
101
Light Clay
None
1
1
1
No
No
No
North Lot
101
Medium Clay
None
3
1
1
No
No
No
F-Module
101
Medium Clay
None
3
1
1
No
No
No
103
103
Light Clay
None
2
1
1
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Clay
None
3
1
2
Yes
No
No
Foam caused by splashing
108
1 108
Light Clay
None
2
2
2
No
No
No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
05/09/2012 1 0.47 1 108 1 108 Light Gray None 2 1 2 1 3 1 No I No I No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
06/11/2012 1 1.06 1 108 1 108 Light Brown None 2 1 1 1 2 1 No I No I No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
07/20/2012 1 0.14 1 108 1 108 Light Brown None 2 1 1 1 1 1 No I No I No

Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
09/06/2012 1 0.55 1 108 1 108 Dark Brown None 2 1 1 1 3 1 No I No I No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
11/13/2012 1 0.12 1 108 1 108 1 Very Light Gray I None 2 1 1 1 2 1 No I No I No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
12/12/2012 1 0.42 1 108 1 108 Light Clay None 1 1 2 1 2 1 No I No I No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
12/20/2012 1 0.35 1 108 1 108 Light Clay None 1 1 2 1 1 1 No I No I No
Year 3 / Period 1
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
02/07/2013
0.87
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Clear
None
1
1
1
No
No
No
North Lot
101
Clear
None
1
1
1
No
No
No
F-Module
101
Clear
None
1
1
1
No
No
No
103
103
Clear
None
1
1
1
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Clay
None
2
1
1
No
No
No
108
1 108
Light Clay
None
2
1
1
No
No
No
Year 3 / Period 2
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
06/26/2013
0.27
A -Dock
101
Very Light Clay
None
1
1
1
No
No
No
South Lot
101
Light Clay
None
2
1
1
No
No
No
North Lot
101
Light Clay
None
2
1
1
No
No
No
F-Module
101
Light Clay
None
2
1
1
No
No
No
103
103
Very Light Clay
None
2
1
1
No
No
No
104
104
Clear
None
1
2
1
No
No
No
105
108
Clear
None
2
2
1
No
No
No
108
1 108
Clear
None
2
2
1
No
No
No
Year 4 / Period 1

Date Rainfall Outfall Buildinq Color Odor Clarity Floatinq Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
11/26/2013
1.48
A -Dock
101
Light Gray
None
1
1
2
No
No
No
South Lot
101
Light Brown
None
2
1
2
No
No
No
North Lot
101
Light Brown
None
1
1
3
No
No
No
F-Module
101
Light Gray
None
2
2
2
No
No
No
103
103
Clear
None
1
4
4
No
No
No
Leaf Litter
104
104
Clear
None
1
1
2
No
No
No
105
108
Light Brown
None
2
1
1
No
No
No
108
1 108
Light Brown
None
2
2
2
No
No
No
Year 4 / Period 2
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
07/15/2014
3.52
A -Dock
101
Light Brown
None
2
2
1
No
No
No
South Lot
101
Light Brown
None
2
1
1
No
No
No
North Lot
101
Light Orange
None
3
1
2
No
No
No
F-Module
101
Light Orange
None
2
1
1
No
No
No
103
103
Flooded/Overgrown - No Access
104
104
Very Light Brown
None
2
1
1
No
No
No
105
108
Very Light Brown
None
2
1
1
No
No
No
108
1 108
Light Brown
None
2
1
1
No
No
No
Year 5 / Period 1
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
02/09/2015
0.62
A -Dock
101
Light Brown
None
2
1
2
No
No
No
South Lot
101
Light Gray
None
1
1
1
No
No
No
North Lot
101
Light Orange
None
2
1
2
No
No
Yes
F-Module
101
Light Orange
None
3
1
2
No
No
No
103
103
Light Gray
None
2
1
2
No
No
No
104
104
Light Brown
None
2
2
1
No
No
No
105
108
Light Brown
None
2
1
1
No
No
No
108
1 108
Light Brown
None
2
2
2
Yes
No
No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
04/30/2015 1 0.98 1 104 1 104 Brown None 3 1 2 13 1 No No I No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators

05/19/2015 1 0.22 1 104 1 104 1 Light Orange I None 1 2 1 1 1 1 1 No I No I No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
06/01/2015 1 0.15 1 104 1 104 Light Orange I None 1 1 1 11 1 No No I No
Year 5 / Period 2
Date Rainfall Outfall Building Color Odor Claritv Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
07/19/2015
0.29
A -Dock
101
Light Gray
None
2
2
2
No
No
No
South Lot
101
Light Orange
None
2
2
2
No
No
No
North Lot
101
Light Orange
None
2
1
1
No
No
Yes
F-Module
101
Light Orange
None
2
1
1
No
No
No
103
103
Light Gray
None
2
1
2
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Orange
None
2
1
2
No
No
No
108
1 108
1 Light Orange
I None
2
1
2
No
No
No
Year 6 / Period 1
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
12/17/2015
1.05
A -Dock
101
Light Orange
None
2
1
2
No
No
No
South Lot
101
Light Orange
None
2
1
2
No
No
No
North Lot
101
Light Orange
None
3
1
3
No
No
No
F-Module
101
Light Orange
None
2
1
2
No
No
No
103
103
Light Orange
None
3
1
2
No
No
No
104
104
Light Orange
None
2
1
2
No
No
No
105
108
Light Brown
None
2
1
2
No
No
No
108
1 108
Light Brown
None
1
1
2
No
No
No
Year 6 / Period 2
Date Rainfall Outfall Buildina Color Odor Claritv Floatina Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
07/30/2016
0.11
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Light Orange
None
2
1
2
No
No
No
North Lot
101
Light Brown
None
2
1
1
No
No
No
F-Module
101
Light Brown
None
2
1
1
No
No
No
103
103
Clear
None
1
1
1
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Orange
None
2
2
2
No
No
No
108
1 108
Light Orange
I None
2
2
2
No
No
No

Year 7 / Period 1
Date Rainfall Outfall Buildina Color Odor Claritv Floatina Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
12/18/2016
0.36
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Light Orange
None
2
2
2
No
No
No
North Lot
101
Light Orange
None
2
2
2
No
No
No
F-Module
101
Clear
None
1
1
1
No
No
No
103
103
Clear
None
1
2
2
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Orange
None
2
2
1
No
No
No
108
1 108
1 Light Orange
I None
2
1
1
No
No
No
Year 7 / Period 2
Date Rainfall Outfall Buildina Color Odor Claritv Floatina Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
06/24/2017
1.20
A -Dock
101
Very Light Orange
None
2
1
1
No
No
No
South Lot
101
Light Orange
None
2
1
2
No
No
No
North Lot
101
Light Orange
None
2
1
1
No
No
No
F-Module
101
Orange
None
3
1
2
No
No
No
103
103
Flooded
104
104
Light Orange
None
2
1
1
No
No
No
105
108
Light Orange
None
2
1
1
No
No
No
108
1 108
Light Brown
None
2
1
2
No
No
No
Year 8 / Period 1
Date Rainfall Outfall Building Color Odor Claritv Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
01/28/2018
1.33
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Light Orange
None
2
1
1
No
No
No
North Lot
101
Light Orange
None
2
1
1
No
No
No
F-Module
101
Light Orange
None
2
1
2
No
No
No
103
103
Light Orange
None
2
1
1
Yes
No
No
Some bubbles / foam
104
104
Light Orange
None
2
1
1
No
No
No
105
108
Light Orange
None
2
1
1
No
No
No
108
1 108
Light Brown
None
2
1
1
No
No
No
Special Aluminum Study
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
05/21/2018 1 2.75 1 108 1 108 Light Orange I None 2 1 1 12 1 No No I No

105
108
Light Orange
None
3
1
2
No
No
No
Light Orange
None
1
1
1
No
No
No
108 Downstream
Medium Orange
None
3
1
3
No
No
No
105 Downstream
Light Orange
None
2
1
2
No
No
No
Combined stream
Year 8 / Period 2
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
06/26/2018
1.12
A -Dock
101
Light Gray
None
2
1
3
No
No
No
South Lot
101
Light Orange
None
2
2
1
No
No
No
Leaf debris
North Lot
101
Light Orange
None
2
2
1
No
No
No
F-Module
101
Clear
None
1
1
2
No
No
No
103
103
Light Orange
None
2
1
2
No
No
No
104
104
Light Orange
None
2
1
1
No
No
No
105
108
Clear
None
1
1
1
No
No
No
108
1 108
1 Light Orange
I None
2
1
1
No
No
No
Year 9 / Period 1
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
12/20/2018
0.56
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Light Gray
None
2
1
1
No
No
No
North Lot
101
Light Clay
None
2
1
2
No
No
No
F-Module
101
Light Clay
None
2
2
1
No
No
No
103
103
Light Clay
None
2
1
1
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Clay
None
1
1
1
No
No
No
108
1 108
Light Gray
None
1
1
2
No
No
No
Year 9 / Period 2
Date Rainfall Outfall Buildino Color Odor Claritv Floatino Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
04/02/2019
0.37
A -Dock
101
Light Brown
None
2
1
1
No
No
No
South Lot
101
Light Yellow -Green
None
3
2
3
No
No
No
Pollen
North Lot
101
Light Yellow
None
2
1
1
No
No
No
Pollen
F-Module
101
Light Yellow -Green
None
3
3
3
No
No
No
Pollen
103
103
Light Yellow
None
2
1
1
No
No
No
Pollen
104
104
Light Yellow
None
2
1
1
No
No
No
Pollen
105
108
Light Yellow -Green
None
3
2
3
No
No
No
Pollen
108
108
Light Yellow -Green
None
3
3
3
No
No
No
Pollen

Year 10 / Period 1
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
12/17/2019
0.26
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Light Orange
None
2
1
1
No
No
No
North Lot
101
Light Orange
None
2
2
2
No
No
No
F-Module
101
Light Orange
None
2
2
2
No
No
No
103
103
Clear
None
1
1
2
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Orange
None
1
2
2
No
No
No
108
1 108
Light Orange
I None
1
2
2
No
No
No
Year 10 / Period 2
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
05/27/2020
0.89
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Light Orange
None
2
1
1
No
No
No
North Lot
101
Light Orange
None
2
1
1
No
No
No
F-Module
101
Light Orange
None
2
1
1
No
No
No
103
103
Light Orange
None
1
1
1
No
No
No
104
104
Light Orange
None
1
1
1
No
No
No
105
108
Light Orange
None
2
1
1
No
No
No
108
1 108
Light Orange
I None
1
1
1
No
No
No
Year 11 / Period 1
Date Rainfall Outfall Building Color Odor Claritv Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
01/17/2021
0.27
A -Dock
101
Clear
None
1
2
1
No
No
No
South Lot
101
Light Tan
None
2
1
1
No
No
No
North Lot
101
Clear
None
1
1
1
No
No
No
F-Module
101
Tan
None
4
1
2
No
No
No
103
103
Light Tan
None
1
2
2
No
No
No
104
104
Light Gray
None
2
2
1
Yes
No
No
105
108
Light Orange
None
3
2
2
Yes
No
No
108
1 108
Light Tan
None
2
1
1
No
No
No
Year 11 / Period 2
Date Rainfall Outfall Building
06/02/2021 1 2.30 1 A -Dock 101
South Lot 101
Color Odor
Clear None
Light Orange None
Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition
1 1 1 1 1 No No No
1 2 1 No No No
Other Indicators

North Lot
101
Light Orange
None
3
1
1
No
No
No
F-Module
101
Orange
None
4
1
3
No
No
No
103
103
Clear
None
1
1
1
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Clear
None
1
1
1
No
No
No
108
108
Clear
None
1
1
1
No
No
No
Heavy rain breached sediment
Year 12 / Period 1
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
01/20/2022
0.33
A -Dock
101
Clear
None
1
1
2
No
No
No
South Lot
101
Clear
None
1
1
1
No
No
No
North Lot
101
Light Orange
None
2
1
2
No
No
No
F-Module
101
Gray
None
3
1
3
No
No
No
103
103
Light Orange
None
2
1
1
Yes
No
No
Foam in downstream rocks
104
104
Clear
None
1
1
1
Yes
No
No
Foam in downstream rocks
105
108
Light Orange
None
1
1
1
No
No
No
108
1 108
Light Orange
I None
2
1
1
Yes
No
No
Foam in downstream rocks

Tier One Reporting (outfall #1)
Sample Date Location Parameter
Result Benchmark Inspection Date Inspector
Tier One Response
2/28/2011 Building 108 Outfall Aluminum
3.61 mg/L 0.75 mg/L 3/19/2011 Steinmetz
Possible Cause: Excess soil in the stormwater conveyance system
Selected Action: Developed sample plan to determine aluminum source
Collected stormwater and soil samples on 06/29/2011
Results from 06/29/2011 samples indicate that local soil contains high levels of aluminum
Results also indicate that aluminum is leaching from soil into stormwater
Preventative Measures: Removed excess soil along curbing upstream from Bldg 108 outfall
Tier Two Reporting (Outfall #1)
Sample Date Location Parameter Result Benchmark Inspection Date Inspector
Tier Two Response
8/27/2011 Building 108 Outfall Aluminum 1.02 mg/L 0.75 mg/L 9/15/2011 Steinmetz
Possible Cause: Residual soil in the stormwater conveyance system
Selected Action: Evaluate BMPs including stormwater drain inserts
Begin monthly stormwater samples for aluminum in October 2011
October monthly sample = No Flow
November samples indicate that Bldg 108 is not the aluminum source
December sample less than benchmark
January sample less than benchmark
February sample above benchmark / Notified NCDWQ RRO - Requested outfall evaluation
NCDWQ (Natalie Landry) site visit to review Bldg 108 outfall - 03/22/2012
March sample postponed until April
April (March) sample less than benchmark
April sample less than benchmark
May sample above benchmark
June sample above benchmark
July sample above benchmark
09/05/12 meeting with landscape project officer to discuss staging area ground cover restoration
August (September) sample above benchmark
September (November) sample less than benchmark
October (December) sample less than benchmark
November (December) sample less than benchmark
Monthly sampling ends after three consecutive samples less than benchmark
Tier Two Monthly Sampling (outfall #1)

Sample Date
Location
Parameter
Result (mg/L)
Be(nchhm rk
Inspection Date
Inspector
Tier Two Response
11/4/2011
Building 108 Outfall
Aluminum
1.600
0.75
Steinmetz
November Monthly Sample
Building 108 Sluiceway
Aluminum
2.210
0.75
Steinmetz
Tier Two Response
Building 108 Parking Lot
Aluminum
0.210
0.75
Steinmetz
Tier Two Response
12/21/2011
Building 108 Outfall
Aluminum
0.472
0.75
Steinmetz
December Monthly Sample (collected as semiannual)
01/27/2012
Building 108 Outfall
Aluminum
0.690
0.75
Steinmetz
January Monthly Sample
02/16/2012
Building 108 Outfall
Aluminum
0.795
0.75
Steinmetz
February Monthly Sample
04/04/2012
Building 108 Outfall
Aluminum
0.580
0.75
Steinmetz
March Monthly Sample (collected in April)
04/26/2012
Building 108 Outfall
Aluminum
0.643
0.75
Steinmetz
April Monthly Sample (collected with semianual samples)
05/09/2012
Building 108 Outfall
Aluminum
2.070
0.75
Steinmetz
May Monthly Sample
06/11/2012
Building 108 Outfall
Aluminum
1.030
0.75
Steinmetz
June Monthly Sample (Storm drain filter installed)
07/20/2012
Building 108 Outfall
Aluminum
1.580
0.75
Steinmetz
July Monthly Sample (Storm drain filter installed)
09/06/2012
Building 108 Outfall
Aluminum
1.520
0.75
Steinmetz
August Monthly Sample (collected in September) (Filter removed)
11/13/2012
Building 108 Outfall
Aluminum
0.255
0.75
Steinmetz
September Monthly Sample (Collected in November)
12/12/2012
Building 108 Outfall
Aluminum
0.102
0.75
Steinmetz
October Monthly Sample (Collected in December)
12/20/2012
Building 108 Outfall
Aluminum
0.198
0.75
Steinmetz
November Monthly Sample (Collected in December)
Tier One Reporting (Outfall #1)
Sample Date Location
Parameter
Result Benchmark Inspection Date Inspector
Tier One Response
2/7/2013 Building 108 Outfall
Aluminum
0.894 mg/L 0.75 mg/L 3/1/2013 Steinmetz
Possible Cause: Excess sand in the stormwater conveyance system from treating icy roads
Selected Action: Collected soil & sand samples on 06/29/2011
Results from 06/29/2011 samples indicate that sand used to treat icy roads contains aluminum
Preventative Measures: Assure that sand is only applied to roads when needed to treat actual icy conditions.
Also, remove roadside sediment buildup along the Power Alley curb as needed.
Tier One Reporting (Outfall #2)
Sample Date Location Parameter Result Benchmark Inspection Date Inspector
Tier One Response
2/7/2013 Building 105 Outfall Aluminum 0.954 mg/L 0.75 mg/L 3/1/2013 Steinmetz
Possible Cause: Residual sand in the Building 102 contractor parking lot from treating icy roads
Selected Action: Collected soil & sand samples on 06/29/2011
Results from 06/29/2011 samples indicate that sand used to treat icy roads contains aluminum
Preventative Measures: Assure that sand is only applied to roads when needed to treat actual icy conditions
Tier One Reporting (Outfall #3)
.- I I .-.-I I I..-..---i.... r.- 1.. c..er, I T;- f%-- D-------

I aaau�Nw --I wa.aawn I ra.au..... I I I I .... v..o .—F— ac I
7/15/2014 1 Buildinq 104 Outfall I Aluminum 1 0.789 mg/L 1 0.75 mg/L 1 8/8/2014 1 Steinmetz jPossible Cause: Soil erosion from very heavy rainfall event (3.52")
Selected Action: Collected soil & sand samples on 06/29/2011
Results from 06/29/2011 samples indicate that area soils contain aluminum
ative Measures: Verified that sediment is not building up in the stormwater conveyance system
n from the sampling point. Aluminum levels above the benchmark at this outfall are considered to be an
event
Tier One Reporting (outfall #1)
Sample Date Location
Parameter Result Benchmark
Inspection Date Inspector
Tier One Response
2/9/2015 Building 108 Outfall
Aluminum 1.000 mg/L 0.75 mg/L
3/6/2015 Steinmetz
Possible Cause: Excess sand in the stormwater conveyance system from treating icy roads
Selected Action: Collected soil & sand samples on 06/29/2011
Results from 06/29/2011 samples indicate that sand used to treat icy roads contains aluminum
Preventative Measures: Assure that sand is only applied to roads when needed to treat actual icy conditions.
Also, remove roadside sediment buildup along the Power Alley curb as needed.
Tier Two Reporting (Outfall #3)
Sample Date Location Parameter
Result Benchmark
Inspection Date Inspector
Tier Two Response
2/9/2015 Building 104 Outfall Aluminum
2.13 mg/L 0.75 mg/L
3/6/2015 Steinmetz
Possible Cause: Excess sand in the stormwater conveyance system from treating icy roads
Selected Action: Begin monthly samples for aluminum in April 2015
Consider study of downstream aluminum levels
April sample above benchmark
05/18/2015 - Reinspected curbside and road surfaces upstream from the Building 104 outfall. Very little sand
and sediment remains upstream of this outfall. Street cleaning is not required at this time.
May sample below benchmark
June sample below benchmark
July sample below benchmark
07/19/2015 - Monthly sampling ends after three consecutive samples less than benchmark
Tier Two Monthly Sampling (outfall #3)
Sample Date Location Parameter Result (mg/L) Be(nchhm rk
Inspection Date Inspector Tier Two Response
4/30/2015 Building 104 Outfall Aluminum 5.090 0.75
Steinmetz April Monthly Sample
5/19/2015 Building 104 Outfall Aluminum 0.496 0.75
Steinmetz May Monthly Sample

6/1/2015
1B.ilding 104 Outfall
I Aluminum
1 0.670
1 0.75
1
1 Steinmetz
June Monthly Sample
7/19/2015
IBuilding 104 Outfall
I Aluminum
1 0.398
1 0.75
1
1 Steinmetz
IJuly Monthly Sample (Monthly monitoring no longer required)
Tier One Reporting (Outfall #3)
Sample Date Location
Parameter Result (mg/L) Be(nchhm rk
Inspection Date Inspector
Tier One Response
12/17/2015 Building 104 Outfall
Aluminum 1.63 0.75
01/07/2016 Steinmetz
Possible Cause: Soil erosion from heavy rainfall event (1.05")
Selected Action: Collected soil & sand samples on 06/29/2011
Results from 06/29/2011 samples indicate that area soils contain aluminum
Preventative Measures: Verified that sediment is not building up in the stormwater conveyance system
upstream from the sampling point. Aluminum levels above the benchmark at this outfall are considered to be an
isolated event
Tier One Reporting (Outfall #1)
Sample Date Location Parameter Result Benchmark Inspection Date Inspector
Tier One Response
7/30/2016 Building 108 Outfall Aluminum 4.98 mg/L 0.75 mg/L 8/31/2016 Steinmetz
Possible Cause: Soil erosion from previous heavy rain events?
Selected Action: Collected soil & sand samples on 06/29/2011
Results from 06/29/2011 samples indicate that area soils contain aluminum
Preventative Measures: Continue visually monitoring roadside for buildup of soil and sand. Request removal if
warranted.
Tier One Reporting (Outfall #1)
Sample Date Location Parameter Result Benchmark Inspection Date Inspector
Tier One Response
6/24/2017 Building 108 Outfall Aluminum 2.23 mg/L 0.75 mg/L 7/13/2017 Steinmetz
Possible Cause: Soil erosion from heavy rain event
Selected Action: Collected soil & sand samples on 06/29/2011
Results from 06/29/2011 samples indicate that area soils contain aluminum
Preventative Measures: Continue visually monitoring roadside for buildup of soil and sand. Submitted work
order request to remove sand/soil buildup upstream from Outfall #1.
Tier One Reporting (Outfall #3)
Sample Date Location
Parameter Result (mg/L) Be(nchhm rk
Inspection Date Inspector
Tier One Response
Possible Cause: Soil erosion from heavy rainfall event / possible source is C & D dumpster stationed in
6/24/2017 Building 104 Outfall
Aluminum 2.31 0.75
07/13/2017 1 Steinmetz
Building 104 loading dock area for renovation project.

Selected Action: Collected soil & sand samples on 06/29/2011
Results from 06/29/2011 samples indicate that area soils contain aluminum
ative Measures: Verified that sediment is not building up in the stormwater conveyance system
n from the sampling point. Aluminum levels above the benchmark at this outfall are considered to be an
event. C & D dumpster should be removed from site after renovation project completion.
Tier One Reporting (outfall #2)
Sample Date Location
Parameter Result (mg/L) Benchmark
Inspection Date Inspector
Tier One Response
1/28/2018 Building 105 Outfall
I Aluminum 0.869 0.75 02/16/2018 1 Steinmetz
Possible Cause: Excess sand in the stormwater conveyance system from treating icy roads
Selected Action: Collected soil & sand samples on 06/29/2011
Results from 06/29/2011 samples indicate that area soils contain aluminum
Preventative Measures: Verified that sediment is not building up in the stormwater conveyance system
upstream from the sampling point. Aluminum levels above the benchmark at this outfall are considered to be an
isolated event.
Tier Two Reporting (Outfall #1)
Sample Date Location
Parameter Result (mg/L) Be(nchhm rk Inspection Date Inspector
Tier Two Response
1/28/2018 Building 108 Outfall
I Aluminum 1.76 0.75 02/16/2018 1 Steinmetz
Possible Cause: Excess sand in the stormwater conveyance system from treating icy roads
Selected Action: Collect receiving water samples for aluminum to determine downstream impacts.
PreventativeMeasures: Inspection revealed a some sand remains along the roadway, which may have
increased levels of aluminum in stormwater
Tier Two Reporting (Receiving Water Study / Outfall #1)
Sample Date
Location
Parameter
Result (mg/L)
Be(nchhm rk
Inspection Date
Inspector
Tier Two Response
5/22/2018
Building 108 Outfall
Aluminum
0.585
0.75
Steinmetz
Possible Cause: Natural aluminum source upstream and downstream from NIEHS outfalls
Building 105 Outfall
Aluminum
1.990
0.75
Steinmetz
Selected Action: Collect receiving water samples for aluminum to determine downstream impacts.
Preventative Measures: Landscaping team thoroughly removed sediment from upstream areas using blowers
108/ #1 Downstream
Aluminum
2.800
0.75
1 Steinmetz
and brushes and flushed naturally with multiple rain events prior to sampling
Receiving water sampling results: Sampling indicates natural aluminum source since concentrations
105/ #2 Downstream
Aluminum
4.290
0.75
Steinmetz
increased with distance from outfall
Merged Stream
Aluminum
5.730
0.75
Steinmetz
Notified NCDEQ that monthly sampling would be discontinued as per receiving water study agreement.

Tier One Reporting (Outfall #1)
Sample Date Location Parameter Result
Benchmark Inspection Date Inspector
Tier One Response
12/20/2018 Building 108 Outfall BOD 44 mg/L
30 mg/L 01/10/2019 Steinmetz
Possible Cause: Unknown, this is the first time BOD has exceeded benchmark
Selected Action: Visual inspection
Preventative Measures: Keep leaves and vegetative material from entering sample bottles
Tier Two Reporting (Outfall #1)
Sample Date Location Parameter Result Benchmark
Inspection Date Inspector
Tier Two Response
4/2/2019 Building 108 Outfall BOD 140 mg/L 30 mg/L
01/10/2019 Steinmetz
Possible Cause: Observed high levels of pollen in stormwater sample
Selected Action: Begin monthly samples in May 2019
Preventative Measures: Avoid collecting samples from mid -March through late April when pollen count is high
Tier Two Monthly Sampling (Outfall #1)
Sample Date
Location
Parameter
Result (mg/L) Be(nchhm rk Inspection Date
Inspector
Tier Two Response
06/20/2019
Outfall #1
BOD
7.10 30
Steinmetz
June Monthly Sample (Rainfall = 0.30")
07/23/2019
Outfall #1
BOD
10.00 30
Steinmetz
July Monthly Sample (Rainfall = 1.16")
08/13/2019
Outfall #1
BOD
4.90 30
Steinmetz
August Monthly Sample (Rainfall = 1.44")
3 Months Below Benchmark (Monthly monitoring no longer required)
Tier One Reporting (Outfall #2)
Sample Date Location Parameter Result
Benchmark Inspection Date Inspector
Tier One Response
4/2/2019 Outfall #2 BOD 100 mg/L
30 mg/L 04/18/2019 Steinmetz
Possible Cause: Observed high levels of pollen in stormwater sample
Selected Action: Visual inspection
Preventative Measures: Avoid collecting samples from mid -March through late April when pollen count is high
Tier One Reporting (Outfall #1 & #2)
Sample Date I Location I Parameter I Result I Benchmark I Inspection Date Inspector
Tier One Response

4/2/2019
Outfall #1
COD
360 mg/L
120 mg/L
04/18/2019
1 Steinmetz
JPossible Cause: Observed high levels of pollen in stormwater sample
4/3/2019
Outfall #2
COD
200 mg/L
120 mg/L
04/18/2019
1 Steinmetz
ISelected Action: Visual inspection
Preventative Measures: Avoid collecting samples from mid -March through late April when pollen count is high
Tier One Reporting (Outfall #2)
Sample Date Location Parameter Result
Benchmark Inspection Date Inspector
Tier One Response
Outfall #2 Nitrogen 170 mg/L
30 mg/L 01/06/2020 Steinmetz
Possible Cause: Unknown, this is the first time Nitrogen and Phos have exceeded benchmark
12/17/2019
Outfall #2 Total Phos 2.3 mg/L
2 mg/L 01/06/2020 Steinmetz
Selected Action: Visual inspection and personnel interview
Preventative Measures: Site inspection did not reveal evidence of fertilizer spill or other chemical release.
Interviewed ORF landscaping COR and ORF 102 retaining wall and 105 concrete drive construction project
COR. Neither were aware of any events that could have contributed to elevated stormwater nitrogen and
phosphorus at Outfall #2. Requested that both CORs remind their contractors about spill response procedures
for petroleum and other chemicals including fertilizer

Mir7l"Cl � 0 0% m 0 . . . , . � m M. IV% d 0 0 0

Stormwater Outfall Map Legend
Sewer
Manhole - Location errors
fir. Manhole
S tormvwater Drainage Features
■ Catch Basin
■ Catch Basin - Location errom
x Catch Basin - Abandoned
* HleadwalI
# HleadwalI - Location errors
HleadwalI -,abandoned
* Other
* Other - Location errors
• Manhole
0 Manhole - Location errors
Storage Tanks -
A Above ground storage tank, EBb
Above ground storage tank, Fuel Oil
Above ground storage tank, Liquid CO2
- Above ground storage tank, Liquid Nitrogen
r Above ground storage tank, Oil Separator Tank
Above ground storage tank, Oil Separator Tank, Abandoned
Above ground storage tank, Propane
Flow Direction
- Best Management Practices
Sanitary} Sewer pipes
Storm Drain Pipes
------- Hydrology
Water
_ Best Management Practices
NIEHS Hillshade
Elevation
- High : 254
LOW: 0

NIEHS General Location Map
Latitude: 35' 52' 58" N N
Longitude: 78' 52' 34" W
River Basin: Cape Fear w o E
Receiving Stream: UT to Burdens Creek
Stream Class: WS-IV NSW $
TMDL: Jordan Lake Watershed (Nitrogen & Phosphorus)
r M
Facility Location
United States Government
NIEHS
111 T.W. Alexander Drive
RTP, Durham County, NC 27709
Permit # NCS000360

..........
4L
4F.
41.
a
- - - - - - - - - - - - - - - - - - - - - -
u
J
0
11
a

0"

B ui|din
1-D2
103 O u tfa||
- 7W Im
- I=
INOWN11L. ' -
or a age Area: 43313O� l
Percentage ImpermsouE 54. 9%
�.
��mn
--
i � -
Visual Monitoring Only

Building 108 O utfa II
Drainage Area: 42399.09fF
Percentage impe rV iou s: 62.75 °/6
Analytical & Visual Monitoring

NIEHS (NCS000360) Permit Application Supplemental Information
I. Significant changes in NIEHS industrial activities
The Building 108 Waste Handling Facility is the NIEHS industrial activity that triggers individual stormwater
permitting in accordance with 40 CFR 122.26(b)(14) - Category Four (iv): Hazardous waste treatment, storage,
and disposal facilities. There have been no significant changes in industrial activities at the NIEHS Waste
Handling Facility during this stormwater permit term.
Il. Statement of Operational Changes:
The following operational changes occurred during the current permit term.
Operational Updates (Additions):
2010 — A sulfuric acid (50%) storage tank with a 500-gallon capacity was installed inside Building 105. The
sulfuric acid is used as part of a reverse osmosis water treatment process. Deliveries occur about two or three
times per year and are limited to 375 gallons each. The storage tank is double walled for secondary containment
purposes. Supplies for responding to corrosive acid spills are stored at this site.
2016 — A diesel -fueled emergency generator with a 1600-gallon base tank was installed on the NIEHS Campus
just south of Building 102. Deliveries are infrequent and the base tank is double walled for secondary
containment purposes. This tank is covered by the NIEHS SPCC Plan.
2017 — The Building 110 Warehouse became operational in July 2017. The warehouse, located at 105 TW
Alexander Drive has a different physical address from the NIEHS Main Campus (111 TW Alexander Drive).
Warehouse activities include shipping and receiving via ground transport. There are no industrial activities at
this site. The warehouse is certified LEED platinum, which is due in part to minimal impervious surface.
A diesel -fueled emergency generator with a 500-gallon base tank provides backup power at the warehouse.
Fuel deliveries are infrequent, and the base tank is double walled for secondary containment purposes. Spill
supplies are stored at this location. This tank is covered by the NIEHS SPCC Plan.
2018 - A brine solution (sodium chloride) tank with a 3400-gallon capacity was installed to support a centralized
water softening system in the Building 105 central utility plant. The tank is located outside, southwest of
Building 105, in a concrete secondary containment basin that has a capacity of about 3700 gallons. The
containment release valves are kept locked except during drainage events. Rainwater is evaluated for
conductivity before each drainage event. Deliveries occur about two or three times per year.
2019 — A diesel -fueled emergency generator with a 137-gallon base tank was installed on the NIEHS Campus
near the Main Entrance Guardhouse. Deliveries are infrequent and the base tank is double walled for secondary
containment purposes. Spill supplies are stored at this location. This tank is covered by the NIEHS SPCC Plan.
Operational Updates (Deletions):
2016 - The 2000-gallon capacity E85 (85% ethanol / 15% gasoline) aboveground storage tank and associated
fuel dispensing station was removed from the NIEHS Campus. Tanker truck deliveries of E85 ended in 2010.
2017 — The 300-gallon capacity diesel fuel tank and associated emergency generator was removed from the east
side of Building 102.
III. Verification of Original Application Completeness:
All information submitted with the March 2015 renewal application was complete and correct. This current
renewal application covers the entire duration of the permit term from September 2010 to the present.
William K. Steinmetz / NIEHS / Environmental Compliance Specialist

DEPARTMENT OF HEALTH & HUMAN SERVICES
May 20, 2022
Ms. Brianna Young, Industrial Individual Permits Coordinator
Stormwater Program
NCDEQ / Division of Energy, Minerals and Land Resources (DEMLR)
1612 Mail Service Center
Raleigh, North Carolina 27699-1612
Dear Ms. Young:
Public Health Service
National Institutes of Health
National Institute of
Environmental Health Sciences
P. O. Box 12233
Research Triangle Park, NC 27709
Website: httr)://www.niehs.nih.gov
RECEIVED
MAY � 3 2022
QEMLR-Stormwatef Program
The NIEHS requests renewal of NPDES Stormwater Permit NCS000360. Two copies of the completed
application forms and supporting materials are enclosed for your review. The permit application package
includes NPDES Application Form 1, NPDES Application Form 2F as well as associated tables, maps,
and supplemental information.
Note that the data period covers the entire permit term, which began in September 2010. Also, facility
information in the Stormwater Permit Summary report for NIEHS was reviewed and updated in
accordance with your request. Please do not hesitate to contact me at [phone] if you have any
questions concerning this individual stormwater permit renewal application.
Sincerely
',�� � lrrtrr•`Z
William K. Steinmetz
Environmental Compliance Specialist
Enclosures

EPA Identi imten Number
NPDES Permit Number
Fadlity Name
Forth Approved 03/05119
110060508954
N CS000360
N I E H S
OMB No. 2040-0004
Form
U.S. Environmental Protection Agency
/EPA Application for NPDES Permit to Discharge Wastewater
NPDES
GENERAL INFORMATION
REQUIRINGSECTION 1. ACTIVITIES •D•0
1.1 Applicants Not Required to Submit Form 1
1.1.1
Is the facility a new or existing publicly owned
1.1.2
Is the facility a new or existing treatment works
treatment works?
treating domestic sewage.
If yes, STOP. Do NOT complete No
If yes, STOP. Do NOT Dg No
Form 1. Complete Form 2A.
complete Form 1. Complete
Form 2S.
1.2
Applicants Required to Submit Form 1
1.2.1
Is the facility a concentrated animal feeding
1.2.2
Is the facility an existing manufacturing,
operation or a concentrated aquatic animal
commercial, mining, or silvicultural facility that is
a-
production facility?
currently discharging process wastewater?
oYes
4 Complete Form 1 DQ No
Yes 4 Complete Form X] No
and Form 213.
1 and Form 2C.
z
0
1.2.3
Is the facility a new manufacturing, commercial,
1.2.4
Is the facility a new or existing manufacturing,
c
mining, or silvicultural facility that has not yet
commercial, mining, or silvicultural facility that
commenced to discharge?
discharges only nonprocess wastewater?
m
Yes 3 Complete Form 1 No
Yes 4 Complete Form DQ No
and Form 2D.
1 and Form 2E.
1.2.5
Is the facility a new or existing facility whose
discharge is composed entirely of stormwater
a
associated with industrial activity or whose
discharge is composed of both stormwater and
non-stormwater?
Yes + Complete Form 1 No
and Form 2F
unless exempted by
40 CFR
122.26(b)(14)(x) or
b 15 .
SECTION
2. NAME,
MAILING ADDRESS, s .r
2.1
Facility Name
National Institute of Environmental Health Sciences (NIEHS)
o
.2.2
EPA Identification Number
8
110060508954
co
2.3
Facility Contact
Name (first and last)
Title
Phone number
aWilliam
K. Steinmetz
Environmental Compliance Specialist
984-287-3396
Email address
Steinme1 @niehs.nih.gov
a
2.4
Facility Mailing Address
Street or P.O. box
z
P.O. Box 12233 (MD FO-07)
City or town
State
ZIP code
Research Triangle Park
NC
27709
EPA Forth 3510-1 (revised 3-19) Page 1

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03105119
110060508954
NCS000360
NIEHS
OMB No. 2040-0004
a; m
2.5
Facility Location
CD 2!
Street, route number, or other specific identifier
a
111 T.W. Alexander Dr
o
County name
County code (if known)
Durham
d
E _j
City or town
State ZIP code
z 0
Research Triangle Park
NC 27709
SECTION•
3.1
NAICS CODESr
SIC Code(s)
Description (optional)
9199
U)
47
.Q
C
C.�
C.)
z
3.2
NAICS Code(s)
Description (optional)
923120
Administration of Public Health Programs
SECTIONOPERATOR
INFORMATION
4.1
Name of Operator
National Institute of Environmental Health Sciences (NIEHS)
0
4.2
Is the name you listed in Item 4.1 also the owner?
❑ Yes M No United States Government
4.3
0 erator Status
S
Public —federal ❑ Public —state ❑ Other public (specify)
o
❑ Private ❑ Other
(specify)
4.4
Phone Number of Operator
984-287-3400
4.5
Operator Address
G
Street or P.O. Box
m
P.O. Box 12233 (MD FO-07)
c
City or town
State
ZIP code
0 0
Research Triangle Park
SIC
27709
Q,
Email address of operator
O
[e-mail]
SECTION•
.0
5.1
Is the facility located on Indian Land?
❑ Yes (Q No
EPA Form 3510-1 (revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110060508954 NCS000360 NIEHS OMB No.2040-0004
ENVIRONMENTALr
6.1 Existing Environmental Permits (check all that apply and print or type the corresponding permit number for each)
E
NPDES (discharges to surface
X RCRA (hazardous wastes)
❑ UIC (underground injection of
w
0 —
water)
NCS000360
NC2750890004R2
fluids)
wco
❑ PSD (air emissions)
❑ Nonattainment program (CAA)
NESHAPs (CAA)
CL
NCDAQ Permit, 04226R36
9
ElOcean dumping (MPRSA)
ElDredge or fill (CWA Section 404)
DQ Other (specify) Durham County
Industrial User Permit DC-007
7.1 Have you attached a topographic map containing all required information to this application? (See instructions for
cL
specific requirements.)
D( Yes ❑ No ❑ CAFO—Not Applicable (See requirements in Form 2B,)
8.1 Describe the nature of your business.
The NIEHS is part of the National Institutes of Health. The NIEHS mission is to discover how
the environment affects people in order to promote healthier lives. Mission includes research
c performed in onsite laboratory facilities and grant programs that support offsite research at
universities, hospitals, businesses, and other organizations around the country.
m
0
m
m
z
9.1 Does your facility use cooling water?
d ❑ Yes N No 4 SKIP to Item 10.1.
9.2 Identify the source of cooling water. (Note that facilities that use a cooling water intake structure as described at
2 40 CFR 125, Subparts I and J may have additional application requirements at 40 CFR 122.21(r). Consult with your
NPDES permitting authority to determine what specific information needs to be submitted and when.)
o x
U s
Not applicable
10.1 Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(m)? (Check all that
w apply. Consult with your NPDES permitting authority to determine what information needs to be submitted and
when.)
❑ Fundamentally different factors (CWA ❑ Water quality related effluent limitations (CWA Section
Section 301(n)) 302(b)(2))
m
❑ Non -conventional pollutants (CWA ❑ Thermal discharges (CWA Section 316(a))
Section 301(c) and (g))
Not applicable
EPA Form 3510-1 (revised 3-19) Page 3

Identification
Number NPDES Permit Number Facility Name Form Approved 030/19
1EPA
110060508954
NCS000360 NIEHS OMB No.2040-0004
11. CHECKLIST
11.1
AND ..
CERTIFICATIONSECTION
In Column 1 below, mark the sections of Form 1 that you have completed and are submitting with your application.
For each section, specify in Column 2 any attachments that you are enclosing to alert the permitting authority. Note
that not all applicants are required to provide attachments.
Column 1
Column 2
DQ Section 1: Activities Requiring an NPDES Permit
❑ wl attachments
(Q Section 2: Name, Mailing Address, and Location
❑ wl attachments
Section 3: SIC Codes
❑ w/ attachments
Section 4: Operator Information
❑ wl attachments
D, Section 5: Indian Land
❑ w/ attachments
Section 6: Existing Environmental Permits
❑ wl attachments
m
Do Section 7: Map
I topographic ❑ w/ additional attachments
map
Dg Section 8: Nature of Business
El w/ attachments
o
0
DQ Section 9: Cooling Water Intake Structures
❑ w/ attachments
m
Section 10: Variance Requests
❑ w/ attachments
c
w
DQ Section 11: Checklist and Certification Statement
❑ w/ attachments
x
11.2
Certification Statement
c�
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision
in accordance with a system designed to assure that qualified personnel properly gather and evaluate the
information submitted. Based on my inquiry of the person orpersons who manage the system, or those persons
directly responsible for gathering the information, the information submitted is, to the best of my knowledge and
belief, true, accurate, and complete. I am aware that there are significant penalizes for submitting false information,
including the possibility of fine and imprisonment for knowing violations.
Name (print or type first and last name)
Official title
William K. Steinmetz
Environmental Compliance Specialist
Signature
Date signed
0 -S /2 D 2 7Z
EPA Form 3510-1 (revised 3-19) Page 4

NIEHS - NPDES Application Form 1 1 Section 7 Topographic Map
_ un�-
ited states
- ' Government
�4Property
NIEHS
F�
EPA
RCRA
WHF y'
7. 6ne'1�Iile�
Waste Hartdiinq Fpcility WHF)
7�.B�f40.
_ l 4

NIEHS (NCS000360) Permit Application Supplemental Information
I. Significant changes in NIEHS industrial activities
The Building 108 Waste Handling Facility is the NIEHS industrial activity that triggers individual stormwater
permitting in accordance with 40 CFR 122.26(b)(14) - Category Four (iv): Hazardous waste treatment, storage,
and disposal facilities. There have been no significant changes in industrial activities at the NIEHS Waste
Handling Facility during this stormwater permit term.
II. Statement of Operational Changes:
The following operational changes occurred during the current permit term.
Operational Updates (Additions):
2010 — A sulfuric acid (50%) storage tank with a 500-gallon capacity was installed inside Building 105. The
sulfuric acid is used as part of a reverse osmosis water treatment process. Deliveries occur about two or three
times per year and are limited to 375 gallons each. The storage tank is double walled for secondary containment
purposes. Supplies for responding to corrosive acid spills are stored at this site.
2016 — A diesel -fueled emergency generator with a 1600-gallon base tank was installed on the NIEHS Campus
just south of Building 102. Deliveries are infrequent and the base tank is double walled for secondary
containment purposes. This tank is covered by the NIEHS SPCC Plan.
2017 — The Building 110 Warehouse became operational in July 2017. The warehouse, located at 105 TW
Alexander Drive has a different physical address from the NIEHS Main Campus (111 TW Alexander Drive).
Warehouse activities include shipping and receiving via ground transport. There are no industrial activities at
this site. The warehouse is certified LEED platinum, which is due in part to minimal impervious surface.
A diesel -fueled emergency generator with a 500-gallon base tank provides backup power at the warehouse.
Fuel deliveries are infrequent, and the base tank is double walled for secondary containment purposes. Spill
supplies are stored at this location. This tank is covered by the NIEHS SPCC Plan.
2018 - A brine solution (sodium chloride) tank with a 3400-gallon capacity was installed to support a centralized
water softening system in the Building 105 central utility plant. The tank is located outside, southwest of
Building 105, in a concrete secondary containment basin that has a capacity of about 3700 gallons. The
containment release valves are kept locked except during drainage events. Rainwater is evaluated for
conductivity before each drainage event. Deliveries occur about two or three times per year.
2019 — A diesel -fueled emergency generator with a 137-gallon base tank was installed on the NIEHS Campus
near the Main Entrance Guardhouse. Deliveries are infrequent and the base tank is double walled for secondary
containment purposes. Spill supplies are stored at this location. This tank is covered by the NIEHS SPCC Plan.
Operational Updates (Deletions):
2016 - The 2000-gallon capacity E85 (85% ethanol / 15% gasoline) aboveground storage tank and associated
fuel dispensing station was removed from the NIEHS Campus. Tanker truck deliveries of E85 ended in 2010.
2017 — The 300-gallon capacity diesel fuel tank and associated emergency generator was removed from the east
side of Building 102.
III. Verification of Original Application Completeness:
All information submitted with the March 2015 renewal application was complete and correct. This current
renewal application covers the entire duration of the permit term from September 201 to the present.
William K. Steinmetz / NIEHS / EnvironmMtal Compliance Specialist

EPA Identification Number NPDES Permit Number Facility Name Farm Approved 03/05/19
110060508954 NCS000360 NI EHS OMB No.204NO04
Form U.S Environmental Protection Agency
2F `0" EPA Application for NPDES Permit to Discharge Wastewater
NPDES /`1 STORMWATER DISCHARGES ASSOCIATED WITH INDUSTRIAL ACTIVITY
SECTIONOUTFALL LOCATIONI
1.1 Provide information on each of the facili 's outfalls in the table below
4utfall Receiving Water Name Latitude Longitude
Number
See attached Table "
0
U
O
N
SECTION' • I
2.1 Are you presently required by any federal, state, or local authority to meet an implementation schedule for constructing,
upgrading, or operating wastewater treatment equipment or practices or any other environmental programs that could
affect the discharges described in this application?
❑ Yes x No 4 SKIP to Section 3.
2.2 Briefly identify each applicable project in the table below.
Brief Identification and Affected Outfalls Final Compliance Dates
Description of Project (listoutfall numbers) Source(s) of Discharge
Required Projected
Not Applicable
9
m
E
m
0
c.
E
2.3 Have you attached sheets describing any additional water pollution control programs (or other environmental projects
that may affect your discharges) that you now have underway or planned? (Optional Item)
❑ Yes Dj No Not Applicable
EPA Form 3510-2F (Revised 3.19) Page 1

EPA Identification
Number NPDES Permit Number Fadlity Name Form Approved 03M5119
110060508954
NCS000360 NIEHS OMB No.2040-0004
SECTIOND•.
b
a
m C cc
w• :E
c
3.1
Have you attached a site drainage map containing all required information to this application? (See instructions for
specific guidance.)
R Yes See attached PowerPoint file ❑ No
SECTIONPOLLUTANT
SOURCESb
4.1
Provide information on the facility's pollutant sources in the table below.
Outfall
Impervious Surface Area
Total Surface Area Drained
Number
(within a mile radius of the fadiity)
(within a mile radius of the fadiity
specify units
specify units
See attached Table
specify units
specify units
specify units
specify units
specify units
specify units
specify units
specify units
specify units
specify units
4.2
Provide a narrative description of the facility's significant material in the space below. (See instructions for content
requirements.)
ap
All materials stoned outdoors in significant quantities are protected from exposure to stormwater through secondary containment basins,
double -walled tank structures, and covered storage. These materials include an outdoor storage capacity of 285,000 gallons of fuel oil for
emergency generators and boiler plant use along with 3400 gallons storage capacity of Brine solution for use in the water softening operation.
C
W
3
Chemical pesticides are used only when absolutely necessary in accordance with Integrated Pest Management (IPM) principles and in a
manner that is safe to NIEHS personnel, wildlife, and the environment. No "Restricted Use* pesticides are used on the NIEHS Campus.
All personnel Involved with fertilizer application must be certified through the COOP Extension Service. In addition, fertilizer is not applied
within 50 feet of campus waterbodies as per Jordan Lake buffer zone requirements. Herbicides are only used for spot treatment of noxious,
invasive, or aggressive weeds.
O
a
The Waste Handling Facility rF) stores chemical waste from the NIEHS laboratories in preparation for disposal. The waste is packaged, labeled and placed
in secondary containment be ore being transported to the NMF. The waste storage areas in the WHF keep incompatible matelots separated and prov de
secorxfary contatrunent for stored containers. There are no floor drains in the chemical storage areas and the Floors within each room are sloped to prevent
spill migration both from room to room and to the building exterior.
4.3
Provide the location and a description of existing structural and non-structural control measures to reduce pollutants in
stormwater runoff. See instructions forspecificguidance.)
Stormwater Treatment
Codes
Outfali
Number
Control Measures and Treatment
from
Exhibit
2F-1
See Attached Table
EPA Form 3510-2F (Revised 3-19) page 2

EPA Identibcation Number NPDES Permit Number Facilly Name Form Approved 03105/19
11006050E NCS000360 NIEHS OMB No.20404004
�ECTION 5. NONs• .0
5.1 1 certrty under penalty of law that the outfall(s) covered by this application have been tested or evaluated for the
presence of non-stormwater discharges. Moreover, 1 certify that the outfalls identified as having non-stormwater
discharges are described in either an accompanying NPDES Form 2C, 2D, or 2E application.
Name (print or type first and last name) Official title
William K. Steinmetz Environmental Compliance Specialist
Signature �1 Date signed
L�/ ►1• Z%�z 2
Lm 5.2 Provide the testing information requested in the table below.
cc
Outfall Onsite Drainage Points
o Number Description of Testing Method Used Date(s) of Testing Directly Observed
During Test
m
€ See attached Table
0
0
z
6.1 I Describe any significant leaks or spills of toxic or hazardous pollutants in the last three years.
a
L
There have been no significant leaks or spills of toxic or hazardous pollutants on
cc the NIEHS Campus in the last three years.
e
c
m
ca
ta
See the instructions to determine the pollutants and parameters you are required to monitor and, in turn, the bles you must
o complete. Not all applicants need to complete each table.
7.1 Is this a new source or new discharge?
Yes 4 See instructions regarding submission of pq No 4 See instructions regarding submission of
m
estimated data. actual data.
W Tables A, B, C, and D
7.2 Have you completed Table A for each outfall?
�[ Yes See attached Table A historical data ❑ No
EPA Form 3510.2F (Revised 3-19) Page 3

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved OU5119
110060508954
1 NCS000360
NIEHS
OMB No.2040-M
7.3
Is the facility subject to an effluent limitation guideline (ELG) or effluent limitations in an NPDES permit for its process
wastewater?
❑ Yes No 4 SKIP to Item 7.5.
7.4
Have you completed Table B by providing quantitative data for those pollutants that are (1) limited either directly or
indirectly in an ELG and/or (2) subject to effluent limitations in an NPDES permit for the facility's process wastewater?
❑ Yes M No Not applicable
7.5
Do you know or have reason to believe any pollutants in Exhibit 217-2 are present in the discharge?
P( Yes ❑ No 4 SKIP to Item 7.7.
7.6
Have you listed all pollutants in Exhibit 217-2 that you know or have reason to believe are present in the discharge and
provided quantitative data or an explanation for those pollutants in Table C?
1p1 See Table A and note that NIEHS Yes yo! No Table C pollutants are same as Table A
❑
7.7
Do you qualify for a small business exemption under the criteria specified in the Instructions?
❑ Yes 4SKIP to Item 7.18. )q No
7.8
Do you know or have reason to believe any pollutants in Exhibit 2F-3 are present in the discharge?
❑ Yes No 4 SKIP to Item 7.10.
g
7.9
Have you listed all pollutants in Exhibit 2F-3 that you know or have reason to believe are present in the discharge in
Table C?
:r
❑ Yes No Not applicable
0
7.10
Do you expect any of the pollutants in Exhibit 217-3 to be discharged in concentrations of 10 ppb or greater?
(
❑ Yes No 4 SKIP to Item 7.12.
7.11
Have you provided quantitative data in Table C for those pollutants in Exhibit 2F-3 that you expect to be discharged in
�
concentrations of 10 ppb or greater?
cc
❑ Yes No Not applicable
7.12
Do you expect acrolein, acrylonitrile, 2,4-dinitrophenol, or 2-methyl-4,6-dinitrophenol to be discharged in concentrations
of 100 ppb or greater?
❑ Yes No 4 SKIP to Item 7.14.
7.13
Have you provided quantitative data in Table C for the pollutants identified in Item 7.12 that you expect to be
discharged in concentrations of 100 ppb or greater?
❑ Yes (( No Not applicable
7.14
Have you provided quantitative data or an explanation in Table C for pollutants you expect to be present in the
discharge at concentrations less than 10 ppb (or less than 100 ppb for the pollutants identified in Item 7.12)?
❑ Yes No Not applicable
7.15
Do you know or have reason to believe any pollutants in Exhibit 2F4 are present in the discharge?
❑ Yes X No 4 SKIP to Item 7.17.
7.16
Have you listed pollutants in Exhibit 2174 that you know or believe to be present in the discharge and provided an
explanation in Table C?
❑ Yes No Not applicable
7.17
Have you provided information for the storm event(s) sampled in Table D?
❑ Yes C[ No Not applicable
EPA Forth 3510-21F (Revised 3-19) Page 4

EPA Identification Number
NPDES Permit Number
Facility Name
Form Approved 03105119
110060508954
NCS000360
NIEHS
OMS No. 2040-0004
a
Used or Manufactured Toxics
7.18
Is any pollutant listed on Exhibits 2F-2 through 2F-4 a substance or a component of a substance used or
omanufactured
as an intermediate or final product or byproduct?
❑ Yes No 4 SKIP to Section 8.
0
7.19
List the pollutants below, including TCDD if applicable.
1. Not Applicable 4. 7.
m
2. 5. 8.
0
3. 6. 9.
SECTION•
•GICAL TOXICITY TESTING DATA r
Do you have any knowledge or reason to believe that any biological test for acute or chronic toxicity has been made on
8.1
a
any of your discharges or on a receiving water in relation to your discharge within the last three years?
c
❑ Yes No 4SKIP to Section 9.
8.2
Identify the tests and their purposes
below. Not applicable
Z'
x
Tests)
Purpose of Tesgs)
Submitted to NPDES
PermittingAutho '
Date Submitted
0
~
❑ Yes ❑ No
to
o
El Yes El No
m0
❑ Yes ❑ No
SECTION
•
.- • i
Were any of the analyses reported in Section 7 (on Tables A through C) performed by a contract laboratory or
9.1
consulting firm?
Yes ❑ No 4 SKIP to Section 10.
9.2
Provide information for each contract laboratory or consulting firm below.
Laboratory Number 1
Laboratory Number 2
Laboratory Number 3
Name of [aboratorylfirm
o
ENCO Laboratories
m
Laboratory address
u,
102-A Woodwinds InclustriE
I Ct.
—�,
Cary, NC 27511
c
a
>a
c
Phone number
919-467-3090
Pollutant(s) analyzed
Aluminum
BOD
COD
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Form 3510-2F (Revised 3-19) Page 5

EPA
Identification
Number NPDES Permit Number Fadity Name Form Approved 03/05/19
110060508954
NCS000360 NIEHS OMB No.2040MO4
SECTION•
CERTIFICATION STATEMENT (40
10.1
In Column 1 below, mark the sections of Form 2F that you have completed and are submitting with your applicaticn. For
each section, specify in Column 2 any attachments that you are enclosing to alert the permitting authority. Note that not
all applicants are required to com late all sections or provide attachments.
Column 1
Column 2
Section 1
DQ w/ attachments (e.g., responses for additional outfalls)
❑ Section 2
❑ w/ attachments
Section 3
w/ site drainage map
Section 4
wl attachments
DO Section 5
wl attachments
Section 6
❑ wl attachments
£
Section 7
Table A ❑ wl small business exemption request
N
c
❑ Table B w/ analytical results as an attachment
a
j� Table C ❑ Table D
❑ Section 8
❑ w/attachments
-o
Section 9
❑ w/attachments (e.g., responses for additional contact laboratories or firms)
Section 10
❑
v
10.2
Certification Statement
1 certify under penalty of law that this document and all attachments were prepared under my direction or supervision in
accordance with a system designed to assure that qualified personnel property gather and evaluate the information
submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible
for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. l am aware that there are significant penalties for submitting false information, including the possibility of fine
and imprisonment for knowing violations.
Name (print or type first and last name)
Official title
William K. Steinmetz
Environmental Compliance Specialist
Signature
Date signed
EPA Form 3510-217 (Revised 3-19) Page 6

2F Section 1.Outfall Location (40 CFR 122.21(g)(1))
Outfall Number
Location
Receiving Water Name
Latitude
Longitude
Monitoring Purpose
1
Building 108
UT to Burdens Creek
N 35' 52' 40.483"
W 78° 52' 34.466"
Analytical + Visual
2
Building 105
UT to Burdens Creek
N 35' 52' 38.959"
W 780 52' 36.097"
Analytical + Visual
3
Building 104
UT to Burdens Creek
N 350 52' 43.751"
W 78° 52' 25.726"
Visual Only
4
Building 103
UT to Burdens Creek
N 35° 52' 41.028"
W 78° 52' 25.408"
Visual Only
5
A -Dock
UT to Burdens Creek
N 350 52' 36.808"
W 780 52' 41.013"
Visual Only
6
South Lot
UT to Burdens Creek
N 35° 51' 56.128"
W 78° 52' 45.831"
Visual Only
7
North Lot
UT to Burdens Creek
N 35* 53' 7.964"
W 78' 52' 51.190"
Visual Only
8
F-Module
UT to Burdens Creek
N 35` 53' 8.090"
W 78° 52' 38.790"
Visual Only

2F Section 4: Pollutant Sources (40 CFR 122.26(c)(1)(i)(B))
Outfall Number
Location
Impervious Surface Area (ft)
Total Surface Area Drained (ft)
Percent Imprevious
1
Building 108
26605
42399
62.75
2
Building 105
46732
131160
35.63
3
Building 104
40941
82178
49.82
4
Building 103
23723
43306
54.78
5
A -Dock
10942
16004
68.37
6
South Lot
146112
249678
58.52
7
North Lot
231235
338211
68.37
8
F-Module
92331
249678
36.98

2F Section 4: Pollutant Sources (40 CFR 122.26(c)(1)(1)(13))
Outfall Number
Location
Structural Controls
Non Structural Controls
Exhibit 2F-1 Codes
Secondary Containment / Locked
1
Building 108
Drain Valves / Controlled Access /
Training /Delivery Procedures /Spill
Not Applicable
WHF Trench Drain Containment
Response Plans / Nearby Spill Supplies
Secondary Containment / Oil -Water
Training /Delivery Procedures /Spill
2
Building 105
Separators / Locked Drain Valves /
Response Plans / Nearby Spill Supplies
Not Applicable
Controlled Access
3
Building 104
Secondary Containment / Locked
Training / Spill Response Plans / Nearby
Not Applicable
Drain Valves / Controlled Access
Spill Supplies
4
Building 103
Secondary Containment / Locked
Training / Spill Response Plans / Nearby
Not Applicable
Drain Valves / Controlled Access
Spill Supplies
5
A -Dock
NA -Cafeteria Loading Dock
Training / Spill Response Plans / Visual
Not Applicable
Inspections
6
South Lot
NA - Employee Parking Lot
Training / Spill Response Plans
Not Applicable
7
North Lot
NA - Employee Parking Lot
Training / Spill Response Plans
Not Applicable
Secondary Containment / Oil -Water
Training /Delivery Procedures /Spill
8
F-Module
Separators / Locked Drain Valves /
Response Plans / Nearby Spill Supplies
Not Applicable
Sediment Basin

2F Section 5.2 Non-Stormwater Discharge Evaluation
Outfalls
Testing Method
Completion Dates
Drainage Points Observed
1-8
Visual evaluation during semiannual stormwater walkthrough
11/23-24/2010
All
1-8
Visual evaluation during semiannual stormwater walkthrough
05/13/2011
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/14/2011
All
1-8
Visual evaluation during semiannual stormwater walkthrough
03/28/2012
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/16-19/2012
All
1-8
Visual evaluation during semiannual stormwater walkthrough
03/26-29/2013
All
1-8
Visual evaluation during semiannual stormwater walkthrough
11/18-25/2013
All
1-8
lVisual evaluation during semiannual stormwater walkthrough
04/23-28/2014
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/30-31/2014
All
1-8
Visual evaluation during semiannual stormwater walkthrough
03/31/2015
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/15/2015
All
1-8
Visual evaluation during semiannual stormwater walkthrough
03/21/2016
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/19/2016
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/10/2017
All
1-8
Visual evaluation during semiannual stormwater walkthrough
10/19/2017
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/30/2018
All
1-8
Visual evaluation during semiannual stormwater walkthrough
12/28/2018
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/05/2019
All
1-8
Visual evaluation during semiannual stormwater walkthrough
11/05/2019
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/03/2020
All
1-8
Visual evaluation during semiannual stormwater walkthrough
12/23/2020
All
1-8
Visual evaluation during semiannual stormwater walkthrough
04/27/2021
All
1- 8
Visual evaluation during semiannual stormwater walkthrough
12/07/2021
All

NIEHS Stormwater Monitoring History
SAMPLING YEAR 1 PERIOD 91
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH Aluminum
units) (mgfL)
BOD
(mg1L)
COD
(mgfL)
Oil & Grease
(mgfL)
Total Nitrogen
(mgfL)
Total Phosphorus
(mg1L)
EPA Method 624 (VOC)
(mgfL)
EPA Method 625 (SVOC)
(mgfL)
02/28/2011
1st
1
108
0.62
8.40 3.610
3.2
45
ND
1.9
0.190
ND
ND
2
105
7.10 0.538
4-3
30
NO
3.9
0.130
NO
ND
3
104
7,40 0,393
2.4
29
NO
1.3
0,085
NO
Butylhenzylphlhalale = 2.2 uglL
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30
Notes: Sample Period #1, samples collected during severe thunderstorm, used RDU rainfall data
RAMP] Mr. YEAR 1 PFRInn #2
2 Benzene =6.7 Anthracene = .005
Toluene=.0018 Pentachlorophenol=.019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mgfL)
BOD
(mgfL)
COD
(mgfL)
Oil & Grease
(mgfL)
Total Nitrogen
(mgfL)
Total Phosphorus
(mgfL)
EPA Method 624 (VOC)
(mg1L)
EPA Method 625 (SVOC)
(mgfL)
08/27/2011
2nd
1
108
0.54
7.50
1,020
2.1
32
ND
0.73
0.110
NO
NO
3
105
7.40
0.085
NO
28
NO
2.9
0.120
NO
ND
2
104
7.40
0,155
ND
19
NO
1.2
0.054
NO
NO
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30
Notes: Sample Period 92, samples collected during Hurricane Irene, used RDU rainfall data
SAMPI ING YEAR 1 PERIOD N2 1R011 RP_SamnlPl
2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mgfL)
BOD
(mgfL)
COD
(mgfL)
Oil & Grease
(mgfL)
Total Nitrogen
(mgfL)
Total Phosphorus
(mgfL)
EPA Method 624 (VOC)
(mgfL)
EPA Method 625 (SVOC)
(mg1L)
09/06/2011
2nd
1
108
1.59
4.5
2
105
7.5
3
104
NO
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30
Notes: Stormwater samples recollected for SOD since 08/27/2011 samples exceeded 46-hour hold time, used RDU rainfall data
SAMPLING YEAR 2 PERIOD #1
2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Sampling Outfall
Date Period Number
Location
Precipitation
(inches)
I _I
Field pH (pH
units)
Aluminum
(mgfL)
SOD
(mg1L)
COD
(mgfL)
Oil & Grease
{mgfL)
Total Nitrogen
(mgfL)
Total Phosphorus
(mg1L)
EPA Method 624 (VOC)
(mgfL)
EPA Method 625 (SVOC)
(mgfL)
12/21/2011 1st 1
108
0.25
1 7.80
1 0.472
2.2
23
1 NO
1.1
0.057
NO
2,4-Unllrophenol=6.0ug1L
&s(2-e1hy1hexyl)ph1ha1a1e = 1.9 u91
2
105
0,25
7.80
0.210
2.6
55
NO
1.2
0.088
NO
NO
3
104
0,25
7.7D
0.283
NO
28
NO
1.5
0,074
NO
NO

Stormwater Permit Benchmark Values
SAMPLING YEAR 2 PERIOD 92
NIEHS Stormwater Monitoring History
6-9 0.75 30 120 30 30
2 Benzene = 6.7 Anthracene = .005
Toluene=.0010 Pentachlorophenol=.019
Date
Sampling Outfall
Period Number
Precipitation
Location (inches)
Field pH (pH
units)
Aluminum
(mglL)
BOD
(mglL)
COD
(mglL)
Oil & Grease
(mglL)
Total Nitrogen
(mglL)
Total Phosphorus
(mglL)
EPA Method 624 (VOC)
(mglL)
EPA Method 625 (SVOC)
(mglL)
04/26/2012
2nd 1
108 0.13
7.60
0.643
5.0
38
ND
1.2
0.072
ND
ND
2
105 0.13
7.60
0.294
4.6
55
ND
1.1
0.110
ND
ND
3
104 0.13
7.90
0,241
2.7
23
ND
1.3
0.120
ND
ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30
Notes: Sample Period 02, samples used nearby COCORANS rainfall data
SAMPLING YEAR 3 PERIOD 91
2 Benzene 6.7 Anthracene=.005
Toluene=.0019 Pentachlorophenol=.019
Date
Sampling Outfall
Period Number
Location
Precipitation Field pH (pH
(inches) units)
Aluminum BOO COD
(mglL) (mg1L) (mgll-)
Oil & Grease
(mgfL)
Total Nitrogen
(mglL)
Total Phosphorus
(mglL)
EPA Method 624 (VOC) EPA Method 625 (SVOC)
(mglL) (mgfL)
02/07/2013
1 st 1
108
0.87 6.90
0.894 11.0 56
ND
2.7
0.110
ND ND
2
105
0.87 6.70
0.954 24.0 65
3.76
3.3
0.220
ND NO
3
104
0,87 6.90
0.316 3.0 28
ND
2.1
0.210
ND N❑
Stormwater Permit Benchmark Values
SAMPLING YEAR 3 PERIOD #E2
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0010 Pentachlorophenol=.019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mglL)
BOD
(mg1L)
COD
(mglL)
Oil & Grease
(mglL)
Total Nitrogen
(mglL)
Total Phosphorus
(mglL)
EPA Method 624 (VOC)
(mglL)
EPA Method 625 (SVOC)
(mglL)
06126/2013
2nd
1
108
0.27
7.00
0.277
6.1
35
ND
0.9
0.047
ND
NO
2
105
0.27
7.00
0.233
4.7
39
ND
2.1
0.150
ND
ND
3
104
0.27
7.00
0,143
2.5
37
ND
1.3
0.095
ND
Butylbenzylphlhalale = 5.2 ugIL
Stormwater Permit Benchmark Values
SAMPLING YEAR 4 PERIOD #1
6-9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene = .005
Toluene=.0018 Pentachlorophenol=.019
Date
Sampling
Period
Outfall
Number
Location Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mglL)
BOO
(mglQ
COD
(mglL)
Oil & Grease
(mglL)
Total Nitrogen
(mgfL)
Total Phosphorus
(mglL)
EPA Method 624 (VOC) EPA Method 625 (SVOC)
(mgfL) (mgfL)
11/26/2013
1st
1
108 1.48
7.00
0.403
3.6
26
2.74
1.1
0.110
ND ND
2
105 1.48
7.00
0,218
19.0
47
ND
1.4
0.200
ND ND
3
104 1.48
7.00
0.154
3.2
20
ND
0.99
0,390
ND ND

Stormwater Permit Benchmark Values
-RAMP[ ING YEAR A PERIOD 112
NIEHS Stormwater Monitoring History
6-9 0.75 30 120 30 30
2 Benzene = 6.7 Anthracene = .005
Toluene=.0018 Pentachlorophenol=.019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mg1L)
SOD
(mg1L)
COD
(mg1L)
Oil & Grease
(mglL)
Total Nitrogen
(mg1L)
Total Phosphorus
(mg1L)
EPA Method 624 (VOC)
(mg1L)
EPA Method 625 (SVOC)
(mg1L)
07/15/2014
2nd
1
108
3.52
6.90
0.282
NO
35
NO
1.5
0.090
NO
8is(2-ethy1hexyl)ph1hala1e = 1.7 ug!
2
105
3.52
6.70
0.301
12.0
40
NO
0.63
0.170
NO
3is(2-ethy1hexy1)phthalste = 1.7 ug1l.
3
104
3.52
6.90
0.789
5.4
25
NO
1.9
0.400
NO
NO
Stormwater Permit Benchmark Values
SAMPI ING YFAR 5 PFRIO❑ #1 mpnATFDI
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling
period
Outfall
Number
Location
Precipitation Field pH (pH
(inches) units)
Aluminum
(mg1L)
BOD
(mglL)
COD
(mg1L)
Oil & Grease
(mg1L)
Total Nitrogen
(mg1L)
Total Phosphorus
(mg1L)
EPA Method 624 (VOC)
(mg1L)
EPA Method 625 (SVOC)
(m91L)
02/09/2015
1st
1
108
0.62 8.20
1.000
9.2
61
NO
4.1
0.070
NO
NO
2
105
0.62 7.80
0.679
8.6
54
NO
4.6
0.098
NO
NO
3
104
0.62 7.80
2.130
5.0
56
NO
16
0.200
NO
NO
Stormwater Permit Benchmark Values
%AMPI ING YFAR 5 PERIOD #2
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene =.001 8 Pentachlorophenol = .019
Date
Sampling
Period
Outfall
Number
Location
Precipitation Field pH (pH
(inches) units)
Aluminum
(mg1L)
BOD
(mg1L)
COD
(mglL)
Oil & Grease
(mg1L)
Total Nitrogen
(mg1L)
Total Phosphorus
(mglL)
EPA Method 624 (VOC)
(mg1L)
EPA Method 625 (SVOC)
(mglL)
07/19/2015
2nd
1
108
0.29 7.90
0.501
11.0
34
NO
1.6
0.081
NO
NO
2
105
0.29 7.10
0.166
5.2
47
ND
3.5
0.140
NO
Diethyl phthalate = 30 ugrL
3
104
0.29 6.80
0.398
6.7
34
NO
1.4
0.073
ND
9utylbenzylphihalate = 3.2 uglL
Stormwater Permit Benchmark Values
SAMPLING YEAR 6 PERIOD #1
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(Inches)
Field pH (pH
units)
Aluminum
(mg1L)
BOD
(mg1L)
COD
(mg1L)
Oil & Grease
(mg1L)
Total Nitrogen
(mglL)
Total Phosphorus
(mg1L)
EPA Method 624 (VOC)
(mg1L)
EPA Method 625 (SVOC)
(mg1L)
12/17/2015
ist
1
108
1.05
8.70
0.608
NO
NO
NO
0.88
0.028
NO
NO
2
105
1.05
8.40
0.749
2.6
16
NO
1.1
0.066
NO
Di-n-butylphthalate = 3.2 µg1L
3
104
1.05
7.90
1.630
3.3
29
NO
1.9
0.210
NO
NO
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene =.005
Toluene=.0018 Pentachlorophenol=.0t9

NIEHS Stormwater Monitoring History
SAMPLING YEAR 6 PERIOD #2
Date
Sampling
Period
Outfall
Number
Location Precipitation
(inches)
Field pH (pH Aluminum BOD COD
units) (mg1L) (m91L) (mg/L)
Oil & Grease
(mgfL)
Total Nitrogen
(mgfL)
Total Phosphorus
(mgfL)
EPA Method 624 (VOC) EPA Method 625 (SVOC)
(mgfL) (mgfL)
07/30/2016
2nd
1
108 0A 1
6.90 4.980 13.0 86
ND
2.2
0.460
ND ND
2
105 0.11
6.70 0.405 8.0 16
ND
2.4
0.120
ND Bulylbenzylphthalate = 2.1 µgfL
3
1 104 1 0.11
6.70 0.259 7.7 22
ND
2.6
0.043
ND Butylbenzylphthalale=9.2pg1L
Stormwater Permit Benchmark Values
SAMPLING YEAR 7 PERIOD 91
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling Outfall
Period Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mglL)
BOD
(mgfL)
COD Oil & Grease Total Nitrogen
(mgfL) (mgfL) (mgfL)
Total Phosphorus
(mgfL)
EPA Method 624 (VOC)
(mgfL)
EPA Method 625 (SVOC)
(mglL)
12118/2016
1st 1
108
0.36
7.47
0.730
3.7
47 ND 1.4
0.055
ND
ND
2
105
0.36
7.22
0.338
8.5
41 ND 1.8
0.075
ND
ND
3
104
0.36
7.29
0.334
3.3
28 ND 1.8
0.025
ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 7 PERIOD 41 (SOD Rasamnlel
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Date
Sampling
Period
Outfall'
Number
Location Precipitation Field pH (pH
(inches) units)
Aluminum
(mgfL)
BOO
(mglL)
COD
(mgfL)
Oil & Grease
(mgfL)
Total Nitrogen
(mgfL)
Total Phosphorus EPA Method 624 (VOC)
(mgfL) (mgfL)
EPA Method 625 (SVOC)
(mgfL)
02/15/2017
1st
1
108 0.25
19.0
2
105 0.25
17.0
3
104 0.25
11.0
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30
Notes: Stormwater samples recollected for BOD since 1211812016 samples would have required analytical action on i212512016 (Christmas Day)
SAMPLING YEAR 7 PERIOD 92
2 Benzene = 6.7 Anthracene =.005
Toluene =.001 8 Pentachlorophenol = .019
Data
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mgfL)
BOD COD
(mglL) (mgfL)
Oil & Grease Total Nitrogen
(mglL) (mgfL)
Total Phosphorus
(mgfL)
EPA Method 624 (VOC)
(mglL)
EPA Method 625 (SVOC)
(mgfL)
06/24/2017
2nd
1
108
1.20
7.43
2.230
6.6 49.4
ND 1.1
0.100
ND
ND
2
105
1.20
7.19
0.697
3.5 36.6
ND 1.6
0.360
ND
ND
3
104
1.20
6.87
2.310
6.0 38.7
2.44 1.2
0.410
ND
ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene = A05
Toluene =.0018 Pentachlorophenol = .019

NIEHS Stormwater Monitoring History
CAMPI IIVr3 VFAR R Piminn ft1
Date
Sampling
Period
Outfall
Number
Location
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(mg1L)
BOD COD
(mg1L) (mg1L)
Oil & Grease
(mg1L)
Total Nitrogen
(mg1L)
Total Phosphorus
(mg1L)
EPA Method 624 (VOC)
(mg1L)
EPA Method 625 (SVOC)
(mg1L)
01/28/2018
1st
1
108
1.33
8.22
1.760
3.8 23
ND
5.3
0.130
ND
ND
2
105
1.33
7.46
0.869
ND 25
ND
3.8
0.150
ND
ND
3
104
1.33
7.40
0.531
4.1 1 ND
ND
1.8
0.066
ND
ND
Stormwater Permit Benchmark Values
SAMPI Mr. YFAP R PFRInr) 92
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene=.0019 Pentachlorophenol=.019
Sampling
Outfall
Precipitation
Field pH (pH
Aluminum
BOD
COD
011 & Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Date
Period
Number
Location t(. )
(Inches)
units )
m !L
( g )
mg1L
( )
m 1L
( 9 )
m !L1L
( 9 )
(mg1L)
( g )
(mg1L)
)
m !L)
{ 9
06/26/2018 2nd
1
108 1.12
7.81
0.304
7.1
25
ND
3.1
0.110
ND
ND
2
105 1.12
6.98
0.184
3.5
29
ND
8
0.130
ND
ND
Stormwater Permit Benchmark Values
Received approval from NCDEMLR inspector to end Outfatl 3 sampling
cAMPI lAllw Yt~AR a PFRInn fit
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlorophenol = .019
Sampling Outfall
Precipitation
Field pH (pH
Aluminum
BOD
COD
Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Date Period Number
Location (Inches)
units)
(mg1L)
(mg1L)
(mg1L)
(mg1L)
(mg1L)
(mg1L)
(mg1L)
(mg1L)
12/20/2018 1st 1
108 0.56
8.92
0.711
44,0
96
ND
0.93
0.091
ND
ND
2
105 0.56
7.95
0.430
3.6
38
ND
0.90
0.130
ND
ND
Stormwater Permit Benchmark Values
CAMPI WrZ YFAR Q PFR1nn fig
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene =.0016 Pentachlorophenol =.01 9
Sampling Outfall
Precipitation
Field pH {pH
Aluminum
BOD
COD
Oil & Grease
Total Nitrogen
Total phosphorus
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Date Period Number
Location (inches)
units)
(mg1L)
(mg1L)
(mg1L)
(mg1L)
(mg1L)
(mg1L)
(mg1L)
04/02/2019 2nd 1
108 0.37
6.62
0.871
t14
360
ND
4.10
0.790
ND
ND
2
105 0.37
6.97
0.416
200
ND
5.40
0.610
ND
ND
Stormwater Permit Benchmark Values
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene=.0018 Pentachlorophenol=.019
SAMPLING YEAR 10 PERIOD #1
Sampling Outfall Precipitation Field pH (pH Aluminum BOD COD Oil &Grease Total Nitrogen Total Phosphorus EPA Method 624 (VOC) EPA Method 625 (SVOC)
Date period Number Location {inches) units) (mg1L) (mg1L) (mg1L) {mg1L) (mg1L) (mg1L) (mg1L) (mg1L)

NIEHS Stormwater Monitoring History
12/17/2019 1 1st I 1 1 108 1 0,26 1 8.68 1 0.480 1 3.1 1 75 1 ND 1 2.00 0.190 ND ND
2 1 105 1 0.26 8.12 1 0.626 1 3.2 44 ND 1 170.00 2,300 ND ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene =.005
Toluene=.0018 Pentachlorophenol=.019
SAMPLING YEAR 10 PERIOD #2
Date Sampling Outfall Location Precipitation
Field pH (pH
Aluminum
BOO
COD
011 & Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Period Number (inches)
units)
(mg1L)
(mg1L)
(mgIL)
(MOIL)
(mg1L)
(MOIL)
(MOIL)
(MOIL)
05/27/2020 2nd 1 108 0.89
8.49
0.223
2.6
11
ND
0.81
ND
ND
ND
2 105 0,89
7.61
0.121
2.0
22
ND
2.30
ND
ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 11 PERIOD #1
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachlarophanol = .019
Date Sampling Outfall Location
Period Number
Precipitation
(inches)
Field pH (pH
units)
Aluminum
(MOIL)
BOD COD
(mgIL) (mg1L)
Oil & Grease Total Nitrogen
(mg1L) (MOIL)
Total Phosphorus
(MOIL)
EPA Method 624 (VOC) EPA Method 625 (SVOC)
(mg1L) (MOIL)
01/08/2021 1st 1 108
0.32
8,11
0.248
2.5 18
ND 0.61
ND
ND ND
2 105
0.32
8.28
0,265
ND 20
4.84 0.87
ND
ND ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 11 PERIOD #2
6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = .0018 Pentachloraphenol = .019
Date Sampling Outfall
Location
Precipitation
F€eld pH (pH
Aluminum
BOO
COD
Oil & Grease
Total Nitrogen
Total Phosphorus
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Period Number
(inches)
units)
(mg/L)
(MOIL)
(mgIL)
(mg1L)
(mg1L)
(mg1L)
(MOIL)
(MOIL)
06/02/2021 2nd 1
108
2.30
7.03
0.084
2.4
22
ND
0.78
ND
ND
ND
2
105
2.30
6.95
0.129
4.0
28
1.58
1.10
0.280
ND
ND
Stormwater Permit Benchmark Values
SAMPLING YEAR 12 PERIOD #1
6-9 0.75 30 120 30 30 2 Benzene =6.7 Anthracene=.005
Toluene=.0018 Pentachlorophenol = .019
Date
Sampling I Outfall Location Precipitation Field pH (pH
Aluminum BOD
COD 011 & Grease
Total Nitrogen Total Phosphorus
EPA Method 624 (VOC)
EPA Method 625 (SVOC)
Period Number (inches) units)
(mgIL) (MOIL)
(mg1L) (MOIL)
(mgIL) (mglL)
(mg1L)
(mg1L)
01/20/2022
1st 1 108 0.33 6,95
0.185 3.9
23 ND
0.75 0.110
ND
ND
2 105 0.33 6.40
0.104 2.2
17 ND
0.65 0,057
ND
ND
Stormwater Permit Benchmark Values 6-9 0.75 30 120 30 30 2 Benzene = 6.7 Anthracene = .005
Toluene = ,0018 Pentachlorophenol = .019

NIEHS Stormwater Visual Monitoring Summary
Year 1 ! Period t
Date Rainfall Outfall Buildina Color Odor Clarity Floatina Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
02/28/2011
0.62
A -Dock
101
Light Brown
None
2
2
3
No
No
Yes
South Lot
101
Light Brown
None
2
1
1
No
No
Yes
North Lot
101
Light Tan/Clay
None
2
2
2
No
No
Yes
F-Module
101
Light Tan
None
2
1
1
No
No
No
103
103
Light Brown
None
3
2
2
No
No
No
104
104
Light Brown
None
2
1
2
No
No
No
105
108
Light Brown
None
2
2
1
No
No
No
108
108
Light Brown
None
2
2
2
No
No
No
Year 1 ! Period 2
Data Rainfall Outfall Buildina Color Odor Claritv Floatina Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
08/27/2011
0.54
A -Dock
101
Light Brown
None
2
2
1
No
No
Yes
South Lot
101
Light Brown
None
2
1
2
No
No
No
North Lot
101
Very Light Brown
None
1
1
2
No
No
No
F-Module
101
Light Brown
None
2
1
1
No
No
No
103
103
Light Brown
None
2
4
3
Yes
No
Yes
Contained leaf litter/grass clippings
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Clay
None
2
1
2
No
No
No
108
108
Light Brown
None
2
1
1
No
No
No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
111/04/20111 1.43 1 108 1 108 1 Light Grav I None 1 2 1 1 1 2 1 No I No I No
Year 21 Period t
Date Rainfall Outfall Buildina Color
Odor Claritv Floatina Solids Suspended Solids Foam Oil Sheen ErosionlDeoosition Other Indicators
12/21/2011
0.25
A -Dock
101
Light Brown
None
2
1
2
No
No
No
South Lot
101
Very Light Brown
None
2
1
1
No
No
No
North Lot
101
Light Brown
None
2
2
2
No
Yes
Yes
Minor sheen / sediment deposition
F-Module
101
Light Brown
None
3
2
.2
No
No
No
103
103
Very Light Brown
None
1
1
1
No
No
No
104
104
Very Light Brown
None
1
1
1
No
No
No
105
108
Light Brown
None
2
1
2
No
No
No
108
108
Light Brown
None
1
2
2
No
No
No

Tier 2 Visual
Data
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
ErosionlDeposition Other Indicators
01/27/2012
0.22 1
108
1 108
Light Clay
None
2
2
2
No
No
No
Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
ErosionlDeposition Other Indicators
02/16/2012
0.25 1
108
1 108
Light Clay
None
3
2 1
2
No
No
No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
04/04/2012 1 0.62 1 108 1 108 Light Clay None 2 1 2 No No No
Year 2 / Period 2
Date Rainfall Outfall Buildina Color nrinr Claris, Finasnn Cmm. e.,.,.., nu ca.....
04/26/2012
0.13
A -Dock
101
Light Clay
None
1
1
1
No
No
No
South Lot
101
Light Clay
None
1
1
1
No
No
No
North Lot
101
Medium Clay
None
3
1
1
No
No
No
F-Module
101
Medium Clay
None
3
1
1
No
No
No
103
103
Light Clay
None
2
1
1
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Clay
None
3
1
2
Yes
No
No
Foam caused by splashing
108 1
108
Light Clay
None
2
2
2
No
No
No
Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
Erosion/Deposition Other Indicators
05/09/2012
0.47
108
108
Light Gray
None
2
2
3
No
No
No
Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
ErosionlDeposition Other Indicators
06/11/2012
1.06
108
108
Light Brown
None
2
1
2
No
No
No
Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
Erosion[Deposition Other Indicators
07/20/2012
0.14
108
108
Light Brown
None
2
1 1 1
1 1
No
No
No

Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
Erosion/Deposition Other Indicators
09/06/2012
0.55
108
108
Dark Brown
None
2
i
3
No
No
No
Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
Erosion/Deposition Other Indicators
11/13/2012
0.12
108
108
Very Light Gray
None
2
1
2
No
No
No
Tier 2 Visual
Date
Rainfall
Outfall
Building
Color
Odor
Clarity
Floating Solids Suspended Solids
Foam
Oil Sheen
Erosion/Deposition Other Indicators
12/12/2012
0.42
108
108
Light Clay
None
1
2
1 2
No
No
No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Sollds Foam Oil Sheen Erosion/Deposition Other Indicators
12/20/2012 1 0.35 1 108 1 108 Light Clay None 1 1 2 1 1 1 No No I No
Year 3 / Period 1
nata Rainfall nutfail Building Color Odor Clarity Floatina Solids Susoanded Solids Foam Oil Sheen Erosion/D@Dosition Other Indicators
02/07/2013
0.87
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Clear
None
1
1
1
No
No
No
North Lot
101
Clear
None
1
1
1
No
No
No
F-Module
101
Clear
None
1
1
1
No
No
No
103
103
Clear
None
1
1
1
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Clay
None
2
1
1
No
No
No
108
108
Light Clay
None
2
1
1
No
No
No
Year 31 Period 2
nata Rainfall nutfall Ruiidinn Color Oder Claritv Floatina Solids Susoanded Solids Foam Oil Sheen Erosion/Deoosition Other Indicators
06/26/2013
0.27
A -Dock
101
Very Light Clay
None
1
1
1
No
No
No
South Lot
101
Light Clay
None
2
1
1
No
No
No
North Lot
101
Light Clay
None
2
1
1
No
No
No
F-Module
101
Light Clay
None
2
1
1
No
No
No
103
103
Very Light Clay
None
2
1
1
No
No
No
104
104
Clear
None
1
2
1
No
No
No
105
108
Clear
None
2
2
1
No
No
No
108
108
Clear
None
2
2
1
No
No
No
Year 4 / Pedod 1

Date Rainfall Outfall Building Color Odnr Ciaritu Flnatinn Snlidc R••cnandnrl Cnlirlc Cnem Ail Chaa.. Grr 1_..lna....�1•ir... n.h... l...ii ..w.�
11/26/2013
1.48
A -Dock
101
Light Gray
None
1
1
2
No
No
No
South Lot
101
Light Brown
None
2
1
2
No
No
No
North Lot
101
Light Brown
None
1
1
3
No
No
No
F-Module
101
Light Gray
None
2
2
2
No
No
No
103
103
Clear
None
1
4
4
No
No
No
Leaf Litter
104
104
Clear
None
1
1
2
No
No
No
105
108
Light Brown
None
2
1
1
No
No
No
108 1
108
Light Brown
None
2
2
2
No
No
No
Year 41 Period 2
Date Rainfall Outfall Buildina Color Odor Clarity Fleatina Sniidc Sucnandad Snlldc Fnam Ail Chnan Frncinntnanncitinn nthar L..t:. ►n.c
07/15/2014
3.52
A -Dock
101
Light Brown
None
2
2
1
No
No
No
South Lot
101
Light Brown
None
2
1
1
No
No
No
North Lot
101
Light Orange
None
3
1
2
No
No
No
F-Module
101
Light Orange
None
2
1
1
No
No
No
103
103
Flooded/Overgrown - No Access
104
104
Very Light Brown
None
2
1
1
No
No
No
105
108
Very Light Brown
None
2
1
1
No
No
No
108
108
Light Brown
None
2
1
1
No
No
No
Year S 1 Period 1
Date Rainfall Outfall Buildina Color Odor Clarity Flnatinn SnHrfc e.r. 1—in.....�al..., n.t . 1....1 ..,...
02/09/2015
0.62
A -Dock
101
Light Brown
None
2
1
2
No
No
No
South Lot
101
Light Gray
None
1
1
1
No
No
No
North Lot
101
Light Orange
None
2
1
2
No
No
Yes
F-Module
101
Light Orange
None
3
1
2
No
No
No
103
103
Light Gray
None
2
1
2
No
No
No
104
104
Light Brown
None
2
2
1
No
No
No
105
108
Light Brown
None
2
1
1
No
No
No
108 1
108
Light Brown
None
2
2
2
Yes
No
No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
04/30/2015 1 0.98 1 104 1 104 Brown None 3 2 3 No No No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators

05/19/2015 1 0.22 1 104 1 104 Light Orange None 2 1 1 No No No
Tier 2 Visual
Date Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
06/01/2015 1 0.15 1 104 1 104 Light Orange None 1 I 1 I 1 I No No I No
Year 51 Period 2
not& Rainfall nrdfall lauildinn Cninr ndnr Clarity Floatino Solids Susnended Solids Foam Oil Sheen Erosion/Denosition Other Indicators
07/19/2015
0.29
A -Dock
101
Light Gray
None
2
2
2
No
No
No
South Lot
101
Light Orange
None
2
2
2
No
No
No
North Lot
101
Light Orange
None
2
1
1
No
No
Yes
F-Module
101
Light Orange
None
2
1
1
No
No
No
103
103
Light Gray
None
2
1
2
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Orange
None
2
1
2
No
No
No
108
108
Light Orange
None
2
1
2
No
No
No
Year 61 Period 1
nnfo Rainfall nrrtfall Ruildinn Cninr ndnr Clarity Flnatina Solids Susnended Solids Foam Oil Sheen Erosion/Denosition Other Indicators
12/17/2015
1.05
A -Dock
101
Light Orange
None
2
1
2
No
No
No
South Lot
101
Light Orange
None
2
1
2
No
No
No
North Lot
101
Light Orange
None
3
1
3
No
No
No
F-Module
101
Light Orange
None
2
1
2
No
No
No
103
103
Light Orange
None
3
1
2
No
No
No
104
104
Light Orange
None
2
1
2
No
No
No
105
108
Light Brown
None
2
1
2
No
No
No
108
108
Light Brown
None
1
1
2
No
No
No
Year 61 Period 2
Data Rainfall Outfall Rulidino Color Odor Claritv Floatina Solids Susnended Solids Foam Oil Sheen Erosion/Deriosition Other Indicators
07/30/2016
0.11
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Light Orange
None
2
1
2
No
No
No
North Lot
101
Light Brown
None
2
1
1
No
No
No
F-Module
101
Light Brown
None
2
1
1
No
No
No
103
103
Clear
None
1
1
1
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Orange
None
2
2
2
No
No
No
108
108
Light Orange
None
2
2
2
No
No
No

Year 71 Period 1
Date Rainfall Outfall Ruildina Cnlnr ___
12/18/2016
0.36
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Light Orange
None
2
2
2
No
No
No
North Lot
101
Light Orange
None
2
1
2
2
No
No
No
F-Module
101
Clear
None
1
1
1
No
No
No
103
103
Clear
None
1
2
2
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Orange
None
2
2
1
No
No
No
108
108
Light Orange
None
2
1
1
No
No
No
Year 71 Period 2
Date Rainfall Outfall Buildino Cnlnr C1dnr Clarity Flnn}inn Snli.ic Q.--A-A a_ Id.. C..- - n7: cw..__
06/24/2017
1.20
A -Dock
101
Very Light Orange
None
2
1
1
No
No
No
South Lot
101
Light Orange
None
2
1
2
No
No
No
North Lot
101
Light Orange
None
2
1
1
No
No
No
F-Module
101
Orange
None
3
1
2
No
No
No
103
103
Flooded
104
104
Light Orange
None
2
1
1
No
No
No
105
108
Light Orange
None
2
1
1
No
No
No
108 1
108
Light Brown
None
2
1
2
No
No
No
Year 81 Period 1
Date Rainfall Outfall Buildina Color odnr Clarity Fln fin., QMid. s.....o..asa CM;A� e--- ew a6--- vim.. i--n%____:.:__
01/28/2018
1.33
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Light Orange
None
2
1
1
No
No
No
North Lot
101
Light Orange
None
2
1
1
No
No
No
F-Module
101
Light Orange
None
2
1
2
No
No
No
103
103
Light Orange
None
2
1
1
Yes
No
No
Some bubbles / foam
104
104
Light Orange
None
2
1
1
No
No
No
105
108
Light Orange
None
2
1
1
No
No
No
108
108
Light Brown
None
2
1
1
No
No
No
Special Aluminum Study
Date I Rainfall Outfall Building Color Odor Clarity Floating Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
05/21/2018 1 2.75 1 108 1 108 Light Orange None 2 1 1 1 2 1 No No I No

105
108
Light Orange
None
3
1
2
No
No
No
Light Orange
None
1
1
1
No
No
No
108 Downstream
Medium Orange
None
3
1
3
No
No
No
105 Downstream
Light Orange
None
2
1
2
No
No
No
Combined stream
Year 91 Period 2
natty Rainfall Outfall Building Color Odor Clarity Floatina Solids Suspended Solids Foam Oil Sheen Erosion[Decosition Other Indicators
06/26/2018
1.12
A -Dock
101
Light Gray
None
2
1
3
No
No
No
South Lot
101
Light Orange
None
2
2
1
No
No
No
Leaf debris
North Lot
101
Light Orange
None
2
2
1
No
No
No
F-Module
101
Clear
None
1
1
2
No
No
No
103
103
Light Orange
None
2
1
2
No
No
No
104
104
Light Orange
None
2
1
1
No
No
No
105
108
Clear
None
1
1
1
No
No
No
108
108
Light Orange
None
2
1
1
No
No
No
Year 91 Period 1
Date Rainfall Outfall Building Color Odor Clarity Floatina Solids Suspended Solids Foam Oil Sheen ErosionlDeposi8on Other Indicators
12/20/2018
0.56
A -Dock
101
Clear
None
1
1
1
No
No
No
South Lot
101
Light Gray
None
2
1
1
No
No
No
North Lot
101
Light Clay
None
2
1
2
No
No
No
F-Module
101
Light Clay
None
2
2
1
No
No
No
103
103
Light Clay
None
2
1
1
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Light Clay
None
1
1
1
No
No
No
108
108
Light Gray
None
1
1
2
No
No
No
Year 91 Period 2
Data Rainfall Outfall Buildina Color Odor Clarity Floatina Solids Suspended Solids Foam Oil Sheen Erosion/Deposition Other Indicators
04/02/2019
0.37
A -Dock
101
Light Brown
None
2
1
1
No
No
No
South Lot
101
Light Yellow -Green
None
3
2
3
No
No
No
Pollen
North Lot
101
Light Yellow
None
2
1
1
No
No
No
Pollen
F-Module
101
Light Yellow -Green
None
3
3
3
No
No
No
Pollen
103
103
Light Yellow
None
2
1
1
No
No
No
Pollen
104
104
Light Yellow
None
2
1
1
No
No
No
Pollen
105
108
Light Yellow -Green
None
3
2
3
No
No
No
Pollen
108
108
Light Yellow -Green
None
3
3
3
No
No
No
Pollen

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North Lot
101
Light Orange
None
3
1
1
No
No
No
F-Module
101
Orange
None
4
1
3
No
No
No
103
103
Clear
None
1
1
1
No
No
No
104
104
Clear
None
1
1
1
No
No
No
105
108
Clear
None
1
1
1
No
No
No
108
108
Clear
None
1
1
1
No
No
No
Heavy rain breached sediment
Year 121 Period 1
Date Rainfall Outfall Buildina Color Odor Claritv Flaatina Selidn Simnandwrl Snfidn Fnam nil S.hnnn Frn¢snnillnnnesfsnn nrti.. r..a:........�
01/20/2022
0.33
A -Dock
101
Clear
None
1
1
2
No
No
No
South Lot
101
Clear
None
1
1
1
No
No
No
North Lot
101
Light Orange
None
2
1
2
No
No
No
F-Module
101
Gray
None
3
1
3
No
No
No
103
103
Light Orange
None
2
1
1
Yes
No
No
Foam in downstream rocks
104
104
Clear
None
1
1
1
Yes
No
No
Foam in downstream rocks
105
108
Light Orange
None
1
1
1
No
No
No
108
108
Light Orange
None
2
1 1 1
1
1 Yes
No
No
Foam in downstream rocks

Tier One Reporting (Outfall #1)
Sample Date Location Parameter Result Benchmark Inspection Date Inspector
Tier One Response
2/28/2011 Building 108 Outfall Aluminum 3.61 mg1L 0.75 mg1L 3/19/2011 Steinmetz
Possible Cause: Excess soil in the stormwater conveyance system
Selected Action: Developed sample plan to determine aluminum source
Cotlected stormwater and soil samples on 06/29/2011
Results from 06129/2011 samples indicate that local soil contains high levels of aluminum
Results also indicate that aluminum is leaching from soil into stormwater
Preventative Moasures: Removed excess soil along curbing upstream from Bldg 108 outfoll
Tier Two Reporting (Outfall #1)
Sample Data Location Parameter Result Benchmark Inspection Date Inspector Tier Two Response
8/27/2011 1 Building 108 Outfall I Aluminum 1,02 mg1L 0.75 mglL. 9/15/2011 1 Steinmetz Possible Cause: Residual soil in the stormwaterconvoyaoce system
Selected Action: Evaluate BMPs including stormwater drain inserts
Begin monthly stormwater samples for aluminum in October 2011
October monthly sample = No Flow
November samples indicate that Bldg 108 is not the aluminum source
December sample less than benchmark
January sample less than benchmark
February sample above benchmark 1 Notified NCDWQ RRO - Requested out -fall evaluation
NCDWQ (Natalie Landry) site visit to review Bldg 108 outfall - 03/22/2012
March sample postponed until April
April (March) sample less than benchmark
April sample less than benchmark
sample above benchmark
sample above benchmark
sample above benchmark
5/12 meeting with landscape project officer to discuss staging area ground cover restoration
ist (September) sample above benchmark
ember (November) sample less than benchmark
ber (December) sample less than benchmark
amber (December) sample less than benchmark
hly sampling ends alter three consecutive samples less than benchmark
Tier Two Monthly Sampling (Outfall #1)

Sample Date
Location
Parameter
Result (mg1L)
Belnrchm rk
Inspection Date
Inspector
Tier Two Response
11/4/2011
Building 108 Outfall
Aluminum
1.13500
0.75
Steinmetz
November Monthly Sample
Building 108 Sluiceway
Aluminum
2.210
0.75
Steinmetz
Tier Two Response
Building 108 Parking Lot
Aluminum
0.210
0.75
Steinmetz
Tier Two Response
12/21/2011
Building 106 Outfall
Aluminum
0.472
0.75
Steinmetz
December Monthly Sample (collected as semiannual)
01/27/2012
Building 106 Outfall
Aluminum
0.690
0.75
Steinmetz
January Monthly Sample
02/16/2012
Building 108 Outfall
Aluminum
0.795
0.75
Steinmetz
February Monthly Sample
04/04/2012
Building 108 Outfall
Aluminum
0.580
0.75
Steinmetz
March Monthly Sample (collected in April)
04/26/2012
Building 108 Outfall
Aluminum
0.643
0.75
Steinmetz
April Monthly Sample (collected with semianual samples)
05/09/2012
Building 108 Outfall
Aluminum
2.070
0.75
Steinmetz
May Monthly Sample
06/11/2012
Building 108 Outfall
Aluminum
1.030
0.75
Steinmetz
Juno Monthly Sample (Storm drain filter installed)
07/20/2012
Building 108 Octfall
Aluminum
1.580
0.75
Steinmetz
July Monthly Sample (Storm drain fitter installed)
09/06/2012
Building 108 Outfall
Aluminum
1.520
0.75
Steinmetz
August Monthly Sample (collected In September) (Filter removed)
11/13/2012
Building 108 Outfall
Aluminum
0.255
0.75
Steinmetz
September Monthly Sample (Collected in November)
12/12/2012
Building 108 Outfall
Aluminum
0.102
0.75
Steinmetz
October Monthly Sample (Collected in December)
12/20/2012 IBuilding
108 Outfail
Aluminum
0.198
0.75
Isteinmetz
I
November Monthly Sample (Collected In December)
Tier One Reporting (Outfall #1)
Sample Date Location Parameter Result Benchmark Inspection Date Inspector Tier One Response
2/7/2013 Building 108 Outfall Aluminum 0.894 mg1L 0.75 mg1L 3/1/2013 Steinmetz Possible Cause: Excess sand in the siormwater conveyance system from treating icy roads
Selected Action: Collected soil & sand samples an 06/29/2011
Results from 06/2912011 samples indicate that sand used 10 treat icy roads contains aluminum
Preventative Measures: Assure that sand is only applied to roads when needed to treat actual icy conditions.
Also, remove roadside sediment buildup along the Power Alley curb as needed.
Tier One Reporting (Outfall #2)
Sample Date Location Parameter Result Benchmark Inspection Date Inspector Tier One Response
2/7/2013 Building 105 Outfall Aluminum 0.954 m91L 0.75 m91L 3/1/2013 1 Steinmetz Possible Cause: Residual sand in the Building 102 contractor parking lot from treating icy roads
Selected Action: Collected soil & sand samples on 0612912011
Results from 06129/2011 samples indicate that sand used to treat icy roads contains aluminum
Preventative Measures: Assure that sand is only applied to roads when needed to treat actual icy conditions
Tier One Reporting (Outfall #3)
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7/15/2014 1 Building 104 Outfall I Aluminum 1 0.789 mg1L 1 0.75 mg/L 1 8/8/2014 Steinmetz
Tier One Reporting (Outfall #1)
. .c, vnc .• apvaav
ble Cause: Soil erosion from very heavy rainfall event (3.52")
Led Action; Collected soil & sand samples on 06/2912011
s from 0612912011 samples indicate that area soils contain aluminum
ntative Measures: Verified that sediment is not building up in the stormwater conveyance system
:am from the sampling point. Aluminum levels above the benchmark at this oulfafl are considered to be an
id event
Sample Date Location Parameter Result Benchmark Inspection Date Inspector Tier One Response
2/9/2015 Building 108 Outfall Aluminum 1.000 mgfl- 0.75 mg1L 3/6/2015 Steinmetz Possible Cause: Excess sand in the stormwater conveyance system from troating icy roads
Selected Action: Collected soil & sand samples on 0612912011
Results from 06/2912011 samples indicate that sand used 10 treat icy roads contains aluminum
Preventative Measures: Assure that sand is only applied to roads when needed to treat actual icy conditions.
Also, remove roadside sediment buildup along the Power Ailey curb as needed.
Tier Two Reporting (Outfall #3)
Sample Date Location Parameter Result Benchmark Inspection Date Inspector Tier Two Response
2/9/2015 Building 104 Outfall Aluminum 2.13 mgiL 0.75 mg1L 3/6/2015 Steinmetz Possible Cause: Excess sand in the stormwater conveyance system from treating icy roads
Selected Action: Begin monthly samples for aluminum in April 2015
Consider study of downstream aluminum levels
April sample above benchmark
0511812015 - Reinspected curbside and road surfaces upstream from the Building 104 outfalf. Very little sand
and sediment remains upstream of this cutfall. Street cleaning is not required at this time.
May sample below benchmark
June sample below benchmark
July sample below benchmark
0711912015 - Monthly sampling ends after three consecutive samples less than benchmark
Tier Two Monthly Sampling (Outfall #3)
Sample Date
Location Parameter
Result (mg1L)
Benchmark Inspection Date Inspector Tier Two Response
4/30/2015
Building 104 Outfall Aluminum
5,090
0.75 Steinmetz April Monthly Sample
5/19/2015
Building 104 Outfall Aluminum
0.496
0.75 Steinmetz May Monthly sample

6/1/2015 Building 104 Outfall Aluminum 0.670 0.75 1 Steinmetz 1juno Monthly Sample
7/19/2015 1 Building 104 Outfali Aluminum 0.398 0.75 1 Steinmetz 1,1uly Monthly Sample (Monthly monitoring no
Tier One Reporting (Outfall #3)
Sample Date Location Parameter
rk
Result (mg1L) Benchmark
Inspection Date Inspector Tier One Response
12/17/2015 Building 104 Outfall I Aluminum
1.63 0.75
01107/2016 1 Steinmetz Possible Cause: Soil erosion from heavy rainfall event (1.05')
Selected Action: Collected sail & sand samples on 0612912011
Results from 06129/2011 samples indicate that area soils contain aluminum
Preventative Measures: Verified that sediment is not building up in the stormwater conveyance system
upstream from the sampling point. Aluminum levels above the benchmark at this outfall are considered to be an
isolated event
Tier One Reporting (Outfall #1)
Sample Date Location Parameter
Result Benchmark
Inspection Date Inspector Tier One Response
7/30/2016 Building 108 Outfall Aluminum
4.98 mg/L 0.75 mglL
8/31/2016 Steinmetz Possible Cause: Soil erosion From previous heavy rain events?
Selected Action: Collected soil & sand samples on 06/29/2011
Results from 0612912011 samples indicate that area soils contain aluminum
Preventative Measures: Continue visually monitoring roadside for buildup of soil and sand. Request removal if
warranted.
Tier One Reporting (Outfall #1)
Sample Date Location Parameter
Result Benchmark
Inspection Date Inspector Tier One Response
6/24/2017 Building 108 Outfall Aluminum
2.23 mglL 0.75 mg1L
7/13/2017 Steinmetz
Possible Cause: Soil erosion from heavy rain evert
Selected Action: Collected soil & sand samples on 06/29/2011
Results from 06/2912.011 samples indicate that area soils contain aluminum
Preventative Measures: Continue visually monitoring roadside for buildup of soil and sand. Submitted work
order request to remove sand/soil buildup upstream from Outfall #1.
Tier One Reporting (Outfall 93)
Sample Date Location Parameter Result (mgfL) $e(mglL) mark inspection Date Inspector Tier One Response
Posslble Cause: Soil erosion from heavy rainfall event! possible source is C & D dumpster stationed in
6/24/2017 Building 104 Outfall Aluminum 2.31 0.75 07/13/2017 1 Steinmetz Building 104 loading dock area for renovation croiecl.

Selected Action: Collected soil & sand samples on 06/29/2011
Results from 06129/2011 samples indicate that area soils contain aluminum
Preventative Measures: Verified that sediment is not building up in the stormwater conveyance system
upstream from the sampling point. Aluminum levels above the benchmark at this outfall are considered to be an
isolated event. C & D dumpster should be removed from site after renovation project completion.
Tier One Reporting (Outfall #2)
Sample Date Location Parameter Result (mgfL) Benchmark
Inspection Date Inspector Tier One Response
1/28/201$ Building 105 Outfall I Aluminum 0.8fi9 0.75 02/161, Steinmetz Possible Cause: Excess sand in the stormwater conveyance system from treating icy roads
Selected Action: Collected soil & sand samples on 0612912011
Results from 06/29/2011 samples indicate that area soils contain aluminum
Preventative Measures: Verified that sediment Is not building up in the stormwater conveyance system
upstream from the sampling point. Aluminum levels above the benchmark at this outfall are considered to be an
isolated event.
Tier Two Reporting (Outfall #1)
Sample Date Location Parameter Result (mglL) Benchmark Inspection Date Inspector Tier Two Response
1/28/N18 Building 108 Outfall Aluminum 1 1.76 1 0.75 1 02/16/2018 1 Steinmetz JPossible Cause: Excess sand in the stormwater conveyance system from treating icy roads
Selected Action: Collect receiving water samples for aluminum to determine downstream impacts.
PreventativeMeasures: Inspe0cri revealed triat some sand remains along the roadway, which ma
increased levels of aluminum in stormwater
Tier Two Reporting (Receiving Water Study I Outfall #1)
Sample Date
Location
Parameter
Result (mglL)
Be(nchm rk
m1L5/22/2018
Inspection Date
Inspector
Tier Two Response
Building 108 Outfall
Aluminum
0.585
0.75
Steinmetz
Possible Cause: Natural aluminum source upstream and downstream from NIEHS outfalls
Building 105 Outfail
Aluminum
1.990
0.75
Steinmetz
Selected Action: Collect receiving water samples for aluminum to determine downstream impacts.
Preventative Measures: Landscaping team thoroughly removed sediment from upstream areas using blowers
108/ #1 Downstream
Aluminum
2.800
0.75
Steinmetz
and brushes and flushed naturally with multiple rain events prior to sampling
Receiving water sampling results: Sampling indicates natural aluminum source since concentrations
105/ #2 Downstream
I Aluminum
1 4,290
1 0.75
1
Steinmetz
increased with distance from outfall
Merged Stream
I Aluminum
1 5.730
0.75
1
Steinmetz
Notified NCDEQ that monthly sampling would be discontinued as per receiving water study agreement.

Tier One Reporting (Outfall #1)
Sample Date Location Parameter Result
Benchmark Inspection Date Inspector
Tier One Response
12/20/2018 Building 108 Outfall BOD 44 mg/L
30 mg1L 01/10/2019 Steinmetz
Possible Cause: Unknown. this is the first time BOA has exceeded benchmark
Selected Action: Visual inspection
Preventative Measures: Keep leaves and vegetative material from entering sample bottles
Tier Two Reporting (Outfall #1)
Sample Date Location Parameter Result Benchmark Inspection Date Inspector Tier Two Response
4/2/2019 Building 108 Outfall I BOD 140 mg1L 30 mg/L 01/10/2019 Steinmetz Possible Cause: Observed high levels of pollen in stormwater sample
Selected Action: Begin monthly samples in May 2419
Preventative Measures: Avoid collecting samples from mid -March through lain April when pollen count is high
Tier Two Monthly Sampling (Outfall #1)
Sample Date
Location
Parameter Result (mg1L)
Belnchm rk
mg/L06/20/2019
Inspection Date
Inspector
Tier Two Response
Outfall #1
BOD 7.10
30
Steinmetz
June Monthly Sample (Rainfall = 0.30")
07/23/2019
Outfall #1
BOD 10.00
30
Steinmetz
July Monthly Sample (Rainfall = 1.16")
08/13/2019
Outfall #1
BOD 4.90
30
Steinmetz
August Monthly Sample (Rainfall = 1.44")
3 Months Below Benchmark (Monthly monitoring no longer required)
Tier One Reporting (Outfall #2)
Sample Date
Location
Parameter Result
Benchmark
Inspection Date
Inspector
Tier One Response
4/2/2019
Outfall #2
BOD 1 100 mg/L
1 30 mgfL
1 04/18/2019
1 Steinmetz
Possible Cause: Observed high levels of pollen in stormwater sample
Selected Action: Visual inspection
Preventative Measures: Avoid collecting samples from mid -March through late April when pollen count is high
Tier One Reporting (Outfall #1 & #2)
Sample Date I Location I Parameter I Result I Benchmark I InspectionDatel Inspector
Tier One Response

4/2/2019
Outfall #1
COD
360 mglL
120 mgfL
04/18/2019
Steinmetz
Possible Cause: Observed high levels of pollen in stormwater sample
4/3%2019
Outfall #2
COD
200 mglL
120 mg1L
04/18/2019
Steinmetz
Selected Action: Visual inspection
Preventative Measures: Avoid collecting samples from mid -March through late April when pollen count is high
Tier One Reporting (Outfall #2)
Sample Date Location Parameter Result Benchmark inspection bate Inspector
Tier One Response
12/17/2019 Outfall #2 Nitrogen 170 mg1L 30 mg/L 01 /06/2020 Steinmetz
Possible Cause: Unknown, this is the firSt time Nitrogen and Phos have exceeded benchmark
Outfall #2 Total Phos 2.3 mg/L 2 mg/L 01/06/2020 Steinmetz
Selected Action: Visual inspection and personnel interview
Preventative Measures: Site inspection did not reveal evidence of fertilizer spill or other chemical release.
Intervlewed ORF landscaping COR and ORF 102 retaining wall and 105 concrete drive construction project
COR. Neither were aware of any events that could nave contributed to elevated stormwater nitrogen and
phosphorus at Outfall 92. Requested that both CORs remind their contractors about spill response procedures
for petroleum and other chemicals including fertilizer

Stormwater Outfall Map Legend
Sewer
Manhole - Location errors
+ffi Manhole
Storrnwater Drainage Features
■ Catch Basin
■ Catch Basin - Location errors
x Catch basin -Abandoned
Headwall
+� Headwall - Location errors
Headu:alI - Abandoned
• Other
Other - Location errors
• Manhole
• Manhole - Location errors
Storage Tanks -
■ Above ground storage tank, E85
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r Above ground storage tank, Liquid CO2
Above ground storage tank, Liquid Nitrogen
Above ground storage tank, Oil Separator Tank
Above ground storage tank, Oil Separator Tank, Abandoned
Above ground storage tank, Propane
Row Direction
Best Management Practices
Sanitary Sewer pipes
Stoma Drain Pipes
- -- Hydrologi
Water
_ Best Management Practices
NIEHS Hillshade
Elevation
- High : 254
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DEPARTMENT OF HEALTH & HUMAN SERVICES
February 24, 2015
Mr. Bradley Bennett, Supervisor
NC Division of Energy, Minerals and Land Resources
Stormwater Permitting Program
1612 Mail Service Center
Raleigh, North Carolina 27699-1612
Dear Mr. Bennett:
ehF(f-l) L,,, ls'PA6, 3/3jt5
Public Health Service
National Institutes of Health
National Institute of
Environmental Health Sciences
P.O. Box 12233
Research Triangle Park, N.C. 27709
Website: www.niehs.nih.gov
RE 11VD
P :C9 9 () nn—
f 6,° r t eu v's.fi
DENR-L AND QUALITY
STORWVATER PERMITTING
The NIEHS requests renewal of NPDES Stonmwater Permit NCS000360, which expires on
August 31, 2015. Two copies of the completed application forms are enclosed for your review.
The permit application package includes the SPPP certification, supplemental information, and
the permit coverage renewal application form. Please do not hesitate to contact me at (919) 541-
4234 if you have any questions concerning this individual stormwater permit renewal
application.
Sincerely
William K. Steinmetz
Environmental Compliance Specialist
Enclosures

NIEHS General Location Map
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Latitude: 35' 52' 58" N N United States Government
Longitude: 78' 52' 34" W NIEHS
River Basin: Cape Fear w+E r%` - ' ' 111 T.W. Alexander Drive
Receiving Stream: UT to Burdens Creek RTP, Durham County, NC 27709
Stream Class: WS-IV NSW $ Facility Location Permit # NCS000360
TMDL: Jordan Lake Watershed (Nitrogen & Phosphorus)

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4. A summary of the Best Management Practices utilized at the permitted facility. Summary
should consist of a short narrative description of each BMP's in place at the facility. If
the implementation of any BMP's is planned, please include information on these BMP's.
From the NIEHS Stormwater Pollution Prevention Plan:
Structural BMPs
A. Oil -Water Separators:
Building 101 C Oil -Water Separator
Building 101F Oil -Water Separator
Building 105 Oil -Water Separator
The oil/water separators are designed to capture residual oil from any leaks that may occur in the
associated fuel oil storage tank containment basins. All containment drain valves remain closed
and locked until collected stormwater can be visually evaluated for sheen and discoloration.
Stormwater releases occur weekly or as needed with records kept in a logbook.
B. Secondary & Other Containments:
Building 101 C Fuel Oil Storage Tank
Building 101F Fuel Oil Storage Tank
Building 102 Fuel Oil Storage Tank
Building 105 Fuel Oil Storage Tanks
Building 105 Generator Day Tank
Building 105 Cooling Tower Basins
Building 108 Trench Drain
The fuel oil storage tank containments are designed to hold the entire contents of the largest tank
in the containment plus the 25-year rain event. All containments are inspected weekly by the
NVT utility contractors. All containment drain valves remain closed and locked until collected
stormwater can be evaluated for sheen and discoloration. The cooling tower basins located east
of Building 105 are designed to contain cooling water and minimize overspray. The Building
108 loading area is equipped with a trench drain for containment of spills that could occur during
chemical waste transfer between the waste truck and the loading dock. The trench drain valve
remains closed at all times except to release collected stormwater following a visual evaluation.
C. Riprap Areas:
North Parking Lot Outfall Riprap
Journal Lane Sluiceway Riprap
F-Module Outfall Rip -Rap Basin
Building 108 Outfall/Sluiceway Riprap (north side of Building 108)
Building 105 Outfall/Sluiceway Riprap (south side of Building 108)

required if the HSB determines that the runoff is potentially hazardous to the environment.
Water discharged during fire hydrant and sprinkler system flushing is also authorized. Efforts
must be made to limit the potential for erosion caused by hydrant and sprinkler system flushing.
Potable water
Discharge of uncontaminated potable or city water is authorized. This includes water that is
flushed, leaking, or otherwise discharged from the domestic or city water system. Large potable
water leaks that discharge into the NIEHS Lake must be reported to the HSB. Routine washing
of building exteriors, windows, and loading docks with potable water is authorized as long as no
detergents are used. Potable water may also be used to rinse vehicles as long as water use is
minimized to limit the volume of water discharged to the storm drain system
Air conditioning & atmospheric condensate
Discharge of uncontaminated air conditioning condensate is authorized. Uncontaminated water
discharged from atmospheric condensation and from foundation drains is also authorized.
Valve pits/utility vaults groundwater pumping
The pumping of uncontaminated groundwater from valve pits and utility vaults into storm drains
or onto the ground is authorized. Efforts must be made to limit the potential for erosion caused
by surface water runoff from groundwater pumping.
Landscape watering
The watering of plants and vegetation in the landscaped areas on the NIEHS campus is
authorized. Landscape watering should be efficiently directed in order to limit overspray and
avoid discharges into storm drains.
(ii) Unauthorized Non-stormwater Discharges:
Sanitary sewer system overflows
Sanitary sewer system overflows must be reported to the NIEHS Security office at 1-2800. It is
recommended that wastewater from the overflowing manhole be pumped to the nearest
downstream manhole to reduce the release volume. Efforts should be made to reduce
wastewater discharge from upstream sources during overflow events. Also, wastewater must not
be pumped out of the overflowing manhole onto the ground in an effort to evaluate sewer line
conditions. The Durham County Sewer Use Ordinance states that vacuuming must occur with
any jetting of the sewer lines. The sewer line is defined as the piping that receives wastewater
from the various building lines. The HSB Environmental Compliance Officer is responsible for
notifying Durham County and the NC Division of Water Quality of any changed condition or
discharge to the environment. The HSB Environmental Compliance Officer is also responsible
for submitting a press release to all. Durham County print and electronic news media if an
untreated wastewater discharge of 1000 gallons or more enters the NIEHS Lake. The HSB
and/or the ORF landscape contract project officer are responsible for disinfecting the spill site
through application of hydrated lime and removal of excess solids.

5. A short narrative describing any significant changes in industrial activities at the
permitted facility. Significant changes could include the addition or deletion of work
processes, changes in material handling practices, changes in material storage practices,
and/or changes in the raw materials used by the facility.
Industrial Activity Additions:
The NIEHS installed a 500 gallon capacity sulfuric acid (50%) storage tank inside Building 105.
The sulfuric acid is used as part of a reverse osmosis water treatment process. Deliveries occur
about twice per year and are limited to 375 gallons. Stormwater runoff from the sulfuric acid
receiving station discharges to the Building 105 outfall. The NIEHS has developed a Standard
Operating Procedure for receiving sulfuric acid. The SOP is focused on spill prevention and
personal protective equipment.
Industrial Activity Deletions:
The E85 aboveground storage tank and associated fuel dispensing station installed to provide
alternative fuel (85% ethanol / 15% gasoline) for the NIEHS fleet vehicles is no longer in use.
Tanker truck deliveries of E85 have not occurred since 2010.
There have been no other significant changes in industrial activities at the NIEHS during the
current permit term.

r k r r Egg
r r r
r r
North Carolina DiViSiOn of Energy, Minera4 and Gand Resources — storm water permitting
Facility Name: t WC41 rl'Tr1'17t4fe ( �OVi-C47e ei7f9(
Permit Number: IVC S 00 C) 3 b
Location Address: III 7 ice' A g&.V-q& v-
tre v �^yIItie
County: RT P, WC
K> L'ii (, hCie-k t
"I certify, under penalty of law, that the Stormwater Pollution Prevention Plan (SPPP) document and all
attachments were developed and implemented under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly gather and evaluate the information required by the SPPP.
Based on my inquiry of the person or persons who manage the system, or those persons directly responsible
for gathering the information, the information gathered is, to the best of my knowledge and belief, true,
accurate and complete."
Anal
"I certify that the SPPP has been developed, signed and retained at the named facility location, and the SPPP
has been fully implemented at this facility location in accordance with the terms and conditions of the
stormwater discharge permit."
Anal
"I am aware that there are significant penalties for falsifying information, including the possibility of fines and
imprisonment for knowing violations."
Sign (according to permit signatory requirements) and return this Certification. DO NOT
SEND STORMWATER POLLUTION PREVENTION PLAN WITH THIS CERTIFICATION.
Signature
Print or type name of person signing above
Date 0 l; ? D I i
Title C PI
:S p pc F 4't -
SPPP Certification 10/13