NCS000324_Compliance_20081210

raWilLy IVQiIIC:_
NPDES Permit Number:
Facility Location: .
Type of Activity:
SIC Code:
Receiving Streams!
River Basin:
Stream Classification:
Proposed Permit Requirements:
Monitoring Data:
Response Requested by (Date):
Central Office Staff C'nntart-
Special Issues:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins Director
Division of Water Quality
STAFF REVIEW AND EVALUATION
NPDES Stonnwater Permit
Consolidated Metco Inc.
NCS000324
780 Patton Ave.,' Monroe, NC (Union County)
Aluminum Foundries
3365
See Figure l
Yadkin Pee Dee River Basin, Sulk -basic 03-07-14
WS-III
See attached draft permit.
See Table l
Return to: Brian T.nwthar (91 Al Rn I-AgAQ
Issue
Rating Scale: 1 eas to 10 hard
Com liance historyl
Benchmark exceedance
1
Location (TMDL, T&E
species, etc
4
Other Challenges:
Difficult Rating:
3
9/40
Description of Onsite Activities:
Aluminum casting for the trucking industry. Machine and assembly.
Documents Reviewed:
i NPDES Stormwater Permit Application Materials
• National Heritage Program (NHP) Threatened and Endangered Species Database
• SPU File
• Central Files
• 2008 EPA Sector -Specific Permit,'Sector F "Primary Metals"
• 303(d) List, 2008 draft, 2006 final
• 2008 (draft) Yadkin Pee -Dee Basinwide Plan
Page 1 of 7

NCS0003'24
History:
• November 1, 1995: permit first issued. Analytical monitoring included pH on an annual basis.
• May 1, 2002: permit re -issued. No analytical monitoring.
• November 21, 2006: Date permittee submitted renewal application.
Page 2 of 7

NCS000324
Figure 1: Map of Facility
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NCS000324
Consolidated Metco
Inc.
Latitude: 340 59' 52" N
I
Longitude: 800 33' 42" W
County, Lhion
W r
Reccj\ing Stream: UT to Steo
arts Creek
_
1-
Stream Class: WS-III
Sub -basin; 03-07-14 (YadkirPee-Dee
River Basin)
Facility Location
W Scale 1;20,000
Page 3 of 7

NCS000324
Central Office
Summary:
1. Owner's Other Permits:
• Air Quality CCA 3717900036
2. General Observations: Consolidated Metco (Con
aluminum components for a variety of heavy-duty
include standard and preset wheel hubs and brake
a subsidiary of Amsted Industries, is a manufacturer of
Lercial and off -highway vehicles. The company's products
3. Impairment: Stewarts Creek is not on the 2006 3031(d) but is in the draft from 2008 for ecological/biological
integrity and benthos. The 2003 Yadkin Basinwide Plan does not mention Stewarts Creek but it does mention
Richardson Creek which is downstream and impaired for biological integrity and turbidity.
The 1998 basin plan discusses naturally low dissolve
Richardson Creek. Recommendations are that no nev
above the Monroe WWTP discharge. The plan also s
of water quality impacts is needed before more specs:
made. Although the stream remains Impaired below
community is steadily improving. Between 1990 and
suggesting seal change in wales quality. Local actiot
(agriculture, wastewater infrastructure and stormwate
1649 and Salem Creek.
4. Threatened and Endangered: No protected species
Woikiooiii.
5. Location: WS-III ,
6. Industrial Changes Since Previous Permit: Since the
completion of significant expansion of the productie
In the course of this expansion, there has been an in
surface area which drains to stormwater outfall (001
the time of the last permit reissuance and were inclu,
There has been an increase in the amount of impervi
parking areas that were formerly gravel. This is refl
With the exception of the above described i
relatively the same.
7. Analytical Monitoring Notes: There is no analytical
oxygen, excess nutrients and sedimentation in
discharges of oxygen consuming wastes be permitted
ites that further investigation into the causes and sources
c recommendations to improve water quality can be
Ze Monroe WWTP, the benthic macroinvertebrate
'001, the EPT abundance increased from 16 to 46,
aic heeded to seduce nutiieiils fioin all sources
runoff) in the Richardson Creek watershed above SR
2 miles based on the Natural. Heritage Virtual
me of the last permit reissuance, there has been
facilities which necessitated a major building expansion.
ease in the building area and the amount of impervious
These expansion activities were nearing completion at
d in the information submitted at that time.
surfaces as a consequence of the paving of some
J in the updated site plan.
manufacturing materials and practices have remained
in the previous permit.
In the 2008 EPA Multi -Sector General Permit Sector, the subsector Nonferrous Foundries recommends
monitoring for Total Cu and Total Zn. This site's primary process is aluminum.
Qualitative lul.onitorin Notes: Visual monitoring w
shows little signs of pollution. However, the color
the events are light grey in color.
TSS was added to the permit because the visual
done ton times from 05/04/02 to 10/18/06. The data
ges from clear to one event being med. Grey. Many of
shows a light grey color for many observations.
Page 4 of

NCS000324
Revised Permit Recommendations: Analytical 1V7
1. Adding TSS and Aluminum to the renewed permit.
2. pH has been added to the analytical monitoring requi
3. All analytical monitoring has been set to semi-annua.
Section B. The permittee must also document the tot
during the sampling period, the permittee must subm
of the end of the six-month sampling period. Additic
as specified in Table 2.
4. Benchmarks for analytical monitoring have been add
require the permittee to increase monitoring, increase
install stormwater Best Management Practices (BMP
benchmark value, or outside of the benchmark range;
follow the Tier l guidelines which require a facility i
mitigation plan within two months. If during the tern
benchmark values, or outside of the benchmark rang(
two times in a row (consecutive), then the facility sN
of the steps listed for Tier 1 and also immediately ins
outfall where a sampling result exceeded the benchm
5. The permittee is required to collect all of the analytic
representative storm events as defined in Part II Secti
representative outfall status.
6. The permittee is responsible for all monitoring until t
4, and 5.
7. The flow reporting requirement has been removed pc
this permit, however.)
8. Vehicle maintenance monitoring has been revised to
qualitative monitoring.
Other Proposed Changes to the Previous Permit:
l . Additional guidance is provided about the Site Plan r
receiving stream is impaired and if it has a TMDL est
outfall. The map requirements are stated more explic
spills that have occurred in the past three years and al
ensure that they do not contain non-stormwater disch
Section A.
2. Additional requirements for the Stormwater Manager
details regarding secondary containment are providec
3. Additional requirementsfor the Stormwater Pollutior
The plan must also be updated annually to include a
not contain non-stormwater discharges.
4. The facility must now implement a semi-annual Facil
management controls as specified in Part II Section P
5. Information regarding the No Exposure Exclusion ha
and activities are not exposed to precipitation or rune
qualify for a No Exposure Exclusion from NPDES st
information is provided in Part I Section A.
during a representative storm event as defined in Part II
precipitation for each event. If no discharge occurs
a monitoring report indicating "No Flow" within 30 days
ally, samples must be taken a minimum of 60 days apart,
:d to this draft permit. Exceedances of benchmark values
management actions, increase record keeping, and/or
) in a tiered program. If the sampling results are above a
for any parameter at any outfall then the facility shall
ispection within two weeks and implementation of a
i of this permit, the sampling results are above the
, for any specific parameter at a specific discharge outfall
11 follow the Tier ? guidelines which require a ropotition
itute rtroathly inotrituting for all pararnelers al every
irk value for two consecutive samples.
d and qualitative monitoring samples during
)n B. Qualitative monitoring is required regardless of
renewal permit is issued. See Footnote 1 of Tables 1,
DWQ revised strategy. (The total rainfall parameter is in
in order to coincide with analytical and
;quirements. The site map must now identify if the
ablished. It must also describe potential pollutants in each
itly. And, the site plan must contain a list of significant
so must certify that the outfalls have been inspected to
rrges. Additional information is provided in Part II
Plan have been specified in Part II Section A. More
Prevention Plan have been specified in Part II Section A.
ist of significant spills and to certify that the outfalls do
Inspection Program of the site's stormwater
been added to this draft permit. If industrial materials
as described in 40 CFR §122.26(g), the facility may
rmwater discharge permit requirements. Additional
Pagel of 7

NCS000324
Discussions with permittee: Wayne Duncan, 704 289
Permit Contact: Rick Linville 704 226 5319— 12/4/08
1. General description of industrial activities?
assembly.
1, 12/2/08 referred me to Rick Linville
casting for the trucking industry. Machine and
2. Have there been any changes since filing the application. No. The site has scaled back some.
3. What chemicals or materials are stored outside? Castiig, used/spare equipment, and wood pallets. Diesel and
propane with secondary containment. Storage trailers. Sand used in the casting is not stored outside.
4. Do you do vehicle maintenance onsite? No
5. What is you SIC code? 3365
Follow up questions:
6. Do you only do aluminum casting? Yes
7. The visual monitoring shows light grey as the water color multiple times. Why? Referred me to the engineer
do the monitoring, Thurman Horne.
Talked with Turman Horne on 12/8/08, 704 788 4455,
The light grey, color he said was almost clear and commc
a little bit of suspended solids in the water.
return call was from 704 720 0728
z with storm water discharges. He thinks it might be from
Page 6 of

NCS000324
Recommendations: Based on the documents reviewed, t
2006 sufficient to issue an Individual Stormwater Permit.
Prepared by (Signature) /J^
Stormwater Permitting Unit Supervisor
application information submitted on November 26,
Date �94S
Date BSio 6.0
for Bradley
Concurrence by Regional
RO Water Quality Su
Date
Date
Regional Office Staff Comments (attach additional
as necessary)
Page 7 of 7