NCG140138_COMPLETE FILE - HISTORICAL_20100908

STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO.
/v Nol 3:
DOC TYPE
EXHISTORICAL FILE
❑ MONITORING REPORTS
DOC DATE
❑ D D 1 D �.
YYYYM M D D

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
September 8, 2010
Mr. Sam Cannady
Greystone Concrete Products
P.O. Box 680
Henderson, NC 27536
Dee Freeman
Secretary
Subject: General Permit No, NCG140000 Continued Permit
Coverage for Greystone Concrete Products
COC NCG140138
Dear Mr. Cannady:
I spoke to you today regarding your coverage under NCG1400000. I checked in our system and your
facility is currently up to date on your billing and has current permit coverage.
Last year we had numerous stormwater general permits to renew. Consequently we pushed back the
renewal and revision of NCG1400000 until July 1, 2011. We did not mail out new Certificates of
Coverage to permittees or new General Permits as the current general permit dated August 1, 2009-
June 30, 2011 has the same coverage as the previous permit. Therefore, your site will not have a new
copy of your COC and General Permit until you apply and receive a new General Permit in 2011.
If you wish you download a new copy of your General Permit you may from our website:
http://portal.ncdenr.org/web/wq/ws/su/npdessw. If you have any .further questions, please contact
me at telephone number [phone].
Sincerely,
l
Jennifer Jones
Environmental Engineer
cc: Raleigh Regional Office, Dave Parnell
Stormwater Permitting Unit Files
1617 Mail.-'. ,vie Confer, Ralegh, t.'orth Carolina 27699-1617
t,ocationi 5' -; N. Salisbury St. Ralegh, North Carolina 27604
Phone: [phone] FAX: [phone] L Customer Service: 1-8/7.623-6748
Internet: www.ncwalerquality.org
An Equal Opportunity 1 Affirmative Action Employer
One
Noi-thCarolina
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June 20, 2008 2� +�p� /
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Storm Water Permitting Unit IC�'Q
NCDENR — Water Quality Section
1617 Mail Service Center�J� �j 1!' o o
� Celebrating 20 Years of �
Raleigh, NC 27699-1617 r Environmental, Health & Safety Excellence
RE: Request for an Authorization to Construct
NOV 2007-PC-0195 a '�
pH/TSS Corrective Action Plan XCD
Greystone Concrete Products
Vance County x
Permit Nos NCGft0138 & NCG500312�
Dear Sir/Madam:
As requested in Mr. Langley's e-mail dated June 5, 2007, EI, on behalf of Greystone Concrete
Products, is submitting this request for an Authorization to Construct (ATC) wash water
treatment facilities related to the discharge from the drum wash pit. The request replaces a
request for an ATC submitted in August, 2007.
The proposed treatment system will include a series of settling ponds with pH adjustment
associated with the last pond prior to discharge. This system will be constructed so as to prevent
the wash basin or any downstream basin from accepting stormwater runoff from the property.
The system being employed is common to the treatment of drum wash water at concrete batch
plants. Specifically, the facilities being proposed at the Greystone plant include:
• Drum Washout Basin — Drum wash water from each truck will be discharged to an
✓ earthen basin which will be approximately 34 feet by 44 feet. The washout basin will
retain water generally to between 2 to 3 feet, controlled by a stone"weir located at it
outlet, which will also filter the water.
• Settling Basins — From the drum washout settling basin, wash water will flow into a
series of two earthen settling basins each approximate 20 feet wide and 50 feet long. The
discharge from each fine material settling basin will be control by stone weirs also,
providing additional filter capacity. The designed depth of each of these basins is 2.5
feet.
• Final pH Adjustment Basin — The final earthen basin will be used for pH adjustment and
will be approxim el 34 ettyI4 6-eff T-he•outlet of the final basin will be fitted with a
stone weir t crol level and provide additional ter capacity.
Fortran Package Treatment Building — A Fortrans Model 5000 S pH control system has
been ordered for this application. Carbon Dioxide is used to reduce the pH of the wash
water in the final pH adjustment basin. The piping configuration will be typical for these
units and will be oriented to provide mixing/recirculation of the water in the basin, which
helps ensure that the final discharge, will be within imits. The initial pH set point for the
Fortrans system will be between 7.5 and 8.0. L
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2101 Gateway Centre Boulevard • Suite 200 • Morrisville. NC 27560 • Tel: [phone] • Fax: [phone] • ►v<timeil.com

,--'�torm Water Permitting Unit Request for an Authorization To Construct
NCDENR — Water Quality Section NOV 2007-PC-0195
June 20, 2008 pH/TSS Corrective Action Plan
Page 2 Greystone Concrete Products
• Final Discharge — The treated wash water will be discharged through Outfail 001, which
will not be relocated. ✓
• Underground Power -- Greystone will run underground power from the batch plant to the ,
Fortrans building. It will be located underground so as to not interfere with truck traffic
in the area around the batch plant and treatment system.
The system described above is designed to reduce solids and pH in the discharge to within
acceptable and permitted limits. As stated above, the Fortran system has been ordered and
delivered to the facility.
Attached please find the following documents;
• NCDENR NOI form for NCG14000
• Fig I - Facility Location
• Fig 2 - Site Diagram
• Fig 3 -- System Layout
• Fig 4 - Basin Specifications Diagram
• Calculations depicting design volume, retention time, and particle settling times
• Fortrans system information
Thank you for your attention and assistance in this matter. We are committed to remedying this
issue, as is evident by the corrective actions Greystone has already initiated. If DWQ has any
questions or concerns about our approach, please contact us at your earliest convenience. Thank
you for your cooperation.
Sincerely,
El, Inc,
L. Walker, P.E.
Manager
Environmental & Engineering Services
MLW/
Attachments
Cc: Mr. Shannon Langley, Raleigh Regional Office
Sam Cannady, Greystone Concrete
ENM0071004 File
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210E Gateway Centre Boulevard • Suite 200 9 Morrisville, NC 27560 • Tel: [phone] • Fax: [phone]

VI.,
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
August 28, 2007
Mr. Sam Cannady
Greystone Concrete Products
P.O. Box 680
Henderson, North Carolina 27536
Subject: Authorization to Construct Request
Greystone Concrete Products
NPDES General Permit NCG140138
Application Return (Return #1151)
Vance County
Dear Mr. Cannady:
On August 20, 2007, the Division of Water Quality received your request for an
Authorization to Construct (ATC) a series of settling ponds and chemical feed pH -adjustment
system. After preliminary review, .the Stormwater Permitting Unit (SPU) has determined the
submitted materials are insufficient for us to continue processing this ATC request. A summary
is included -below to help you address deficiencies so that you can resubmit a complete ATC
request package:
We are also enclosing a copy of the Notice of Intent (NOI) application form as guidance
because it explains ATC requirements (please see highlighted sections). You do not need to fill
out this form because the facility is already covered under NCG140000. Please note that North
Carolina General Statutes require an Authorization to Construct wastewater treatment works
(G.S. § 143-215.1), and that you must obtain approval for proposed treatment facilities
before construction begins. We understand that you are responding to a Notice of Violation
(NOV No. 2007-PC-0195) and are striving to comply with the conditions of your discharge
permit as soon as possible. Addressing the following items will expedite review of this project:
1. Plans and Specifications: These must be prepared either by a Professional Engineer or
sfa,�P oK --
employee internal to the company that is qualified to perform such work in accordance
with G.S. 89C-25(7). The plans submitted were not signed and sealed by a P.E., the
submittal appears to be a site plan originally prepared by a Land Surveyor that was
modified to show proposed wastewater treatment structures. Also, no specifications for
the proposed washout and settling basins were provided (only some information about
dimensions were outlined in the cover letter).
did
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WyhCarolina
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North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet: www.ncwateruuality.org Location: 512 N. Salisbury St. Raleigh, NC 27604 Fax [phone]
An Equal Opportunity/Affirmative Action Employer-50% Recycle&10% Post Consumer Paper

Mr. Sam Cannady
�. Greystone Concrete Products
Authorization to Construct (ATC) Request Return
August 28, 2007
2. Design Calculations and Basis for Washout and Settling Basins
a. You must provide calculations to demonstrate that retention time and settling
capacity will be sufficient to meet effluent limits for TSS and Settleable Solids in
the NCG140000 permit. For example, these could include Stoke's Law
calculations and assumptions.
b. The letter asserted the washout basin will retain water "generally between 2 to 3
feet." Please describe daily water throughput and outline the basis (number of
trucks routinely washed out, amount of water per truck, etc.)
c. Include specific dimensions for each basin,,voluine calculations, and clarify
whether the washout basin will receive any runoff from areas of site.
d. Provide details about the size storm which the treatment system is designed to
contain during operating conditions (for example, the 10-year, 24-hour storm
depth). Include the amount of freeboard that can be maintained in these basins
during the design storm event.
e. Explain how often solids will be cleaned out of the basins and any other
maintenance that will affect the treatment capacity of the system.
The ATC request package is being returned to you with this letter. The return of this
application does not affect the legal requirements to obtain other permits which may be required
by the Division of Water Quality or permits required by the Division of Land Resources, Coastal
Area Management Act or any other federal or local governmental permit or approval that may be
required.
If you have any questions concerning this matter, please contact Bethany Georgoulias at
[phone], extension 529.
Sincerely,
for Coleen Sullins
enclosure
cc: Raleigh Regional Office
Michael L. Walker, P.E./ El Inc./ 2101 Gateway Centre Blvd., Suite 200/ Morrisville, NC
27560
Central Files
,Stormwater Permitting Unit Files',

August 1, 2007 et - -11 � 5-1
Storm Water Permitting Unit
NCDENR — Water Quality Section
1617 Mail Service Center
Raleigh, NC 27699-1617
RE: Request for an Authorization To Construct
NOV 2007-PC-0195
pH/Solids Corrective Action Plan
Greystone Concrete Products
Vance County
Permit Nos NCG0138 & NCG500312
t�
Dear Sir/Madam:
AUG 2 0 2007 -
a I
� € 1
As requested in Mr. Langley's e-mail dated June 5, 2007, EI, on behalf of Greystone Concrete
Products, is submitting this request for and Authorization to Construct (ATC) wash water
treatment facilities related to the discharge from the drum wash pit. The letter -includes a scaled
drawing of the property showing the location of the proposed construction and vender
information regarding the chemical feed system.
The proposed treatment system will include a series of settling ponds with pH adjustment
associated with the last pond prior to discharge. The system being employed is common to the
treatment of drum wash water at concrete batch plants. Specifically, the facilities being proposed
at the Greystone plant include:
Drum Washout Basin — Drum wash water from each truck will drop in this first earthen
basin, which will be approximately 50 feet by 60 feet. The washout basin will retain
water generally to between 2 to 3 feet, controlled by a stone weir located at it outlet,
which will also filter the water.
0 Settling Basins — From the drum washout settling basin, wash water will flow into a
series of two earthen settling basins each approximate 15 feet wide and 40 feet long. The
discharge from each fine material settling basin will be control by stone weirs also,
providing additional filter capacity. The designed depth of each of these basins is 1 % to 2
feet. •
I
• Final- pH Adjustment Basin --- The final earthen basin will be used for pH adjustment and
will be approximately 40 feet by 50 feet. Again, the outlet of the final basin will be fitted
with a stone weir to control level and provide additional filter capacity.
• Fortrans Package Treatment Building -- A Fortrans Model 5000 S pH control system has
been ordered for this application. Carbon Dioxide is used to reduce the pH of the wash
water in the final pH adjustment basin. The piping configuration will be typical for these
units and will be oriented to provide mixing/recirculation of the water in the basin, which
helps ensure that the final discharge will be within limits. The initial pH set point for the
Fortrans system will be between 7.5 and 8.0.
2101 Gateway Centre Boulevard • Suite 200 + Morrisville, NC 27560 • Tel: [phone] • Fax: [phone]

Storm Water Permitting Unit Request for an Authorization To Construct
NCDENR — Water Quality Section NOV 2007-PC-0195
August 1, 2007 pH/Solids Corrective Action Plan
Page 2 Greystone Concrete Products
• Final Discharge -- The treated wash water will be discharged through Outfail 001, which
will not be relocated.
• Underground Power — Greystone will run underground power from the batch plant to the
Fortrans building. It will be located underground so as to not interfere with truck traffic
in the area around the batch plant and treatment system. -
The systemdescribed above is designed to reduce solids and pH in the discharge to within
acceptable and permitted limits. As stated above, the Fortran system has been ordered and
delivered to the facility. The basins can be finished and the treatment system installed and
operational within two weeks of the receipt of DENR's Authorization to Construct.
Thank you for your attention and assistance in this matter. We are committed to remedying this
particular issue, as is evident by.the corrective actions Greystone has already initiated. If DWQ
has any questions or concerns about our approach, please contact us at your earliest convenience.
Otherwise we will proceed as described. Thank you for your attention.
Sincerely,
ivianager
Environmental & Engineering Services
MLW/ -
Attachments:
Site Survey
Fortrans Vendor Information
Cc: Mr. Shannon Langley, Raleigh Regional Office
Sam Caruzady, Greystone Concrete
ENM0071004 File
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2101 Gateway Centre Boulevard • Suite 200 • Morrisville. NC 27560 • Tel: [phone] • Fax: [phone]

RE:Greystone Concrete pH adjustment equipment and response to NOV
Subject: RE: Greystone Concrete pH adjustment equipment and response to NOV
From: "Mike Walker" <mwaiker@ei 1.com>
Date: Fri, 8 Jun 2007 14:30:28 -0400
To: "Shannon Langley" <[e-mail]>, <[e-mail]>
I have contacted Fortrans for specifics and cut sheets on the unit being
supplied to Greystone. I will put together something and submit It
within the next couple of weeks.
Thank you for your attention on this issue.
Michael'L. Walker, P.E.
Manager, Environmental & Engineering Services
FI, Inc.
2101 Gateway Centre Boulevard, Suite 200
Morrisville, NC 27560
919-657-7500 ext 245
Cell 919-280-9889
Fax [phone]
"Your One and Only Call for Quality Loss Prevention Services"
Visit us at: www.eil.com
-----Original Message -----
From: Shannon Langley(mailto:shannon.langleyCncmail.net]
Sent: Tuesday, June 05, 2007 10:05 AM
To: Mike Walker; [e-mail]
Subject: Greystone Concrete pH adjustment equipment and response to NOV
Mr. walker,
I received your letter in response to the Notice of violation (NOV) our
office sent to Greystone Concrete in Vance County. I appreciate your
assistance with the development of a corrective action plan for the
facility. The installation of the Fortrans unit to adjust pH, requires
an Authorization to Construct (ATC) from our central office. Our
central office staff tell me they have seen several of the Fortrans
systems installed and have confidence in the integrity of the equipment
itself, but, as with all equipment, it must be installed as part of a
system, and that's why we require an ATC under the seal of a PE. The
PE's certification assures us that (s)he has considered all the relevant
conditions and that the design of the whole system will maintain pH
within permit limits.
The ATC application package should include AT LEAST:
*-a cover letter requesting an ATC with a proposed schedule, (there is
not an application form for this type of ATC)
-a cut sheet of the Fortrans equipment,
-a brief operations narrative,
- a stamped site plan and any detail sheets showing the particulars of
the installation, in sufficient detail to give us a complete picture of
the installation and the site, including at least: the route of the
power conduit to the equipment, that the equipment is located out of the
traffic patterns, and not likely to be damaged by vehicles, what the
beginning set point for pH control will be, how the whole treatment
system is configured so that we can see the discharge outlet and that
the water being discharged is indeed receiving pH control.*
1 of 2 6/8/2067 3:09 PM

RE: Greystone Concrete pH adjustment equipment and response to NOV
If you will note in your cover letter that the installation is in
response to an NOV, then we'll try to process it expeditiously so
installation can occur. The package should he sent to the attention of
the "Storm water Permitting Unit" at 1617 Mail Service Center, Raleigh,
NC 27699-1617. .
I am copying the facility (Sam Cannady) on this email as an FYI• and also
giving them a call. Thanks you for your help. Let me know if you have
any questions.
(Mr.) Shannon Langley
2 of 2 6/8/2007 3:09 PM

May 30, 2007
Charles Wakild, P.E.
Surface Water Quality Supervisor
Raleigh Regional Office
NCDENR — Water Quality Section
1628 Mail Service Center
Raleigh, NC 27699-1628
RE: NOV 2007-PC-0195
pH/Solids Corrective Action Plan
Greystone Concrete Products
Vance County
Permit Nos NCG150138 & NCG500312
Dear Mr. Wakild:
k ry
rif y S
L -
This letter is submitted on behalf of Greystone Concrete Products and is in response to your
March 28, 2007 letter and a follow-up to subsequent conversations. , Although your letter
documented the findings of your site inspection on March 21, Item Number 1, associated with
the quality of the discharge from the drum wash area was most significant. As requested, this
letter serves as the Corrective Action Plan associated with remedying that discharge issue.
Subsequent to your letter and in an effort to develop a solution to the elevated pH and solids in
the drum wash discharge, Greystone as completed the following:
Inspected the wash water management facility at another concrete batch plant. Greystone
personnel inspected the facilities and equipment associated with the management of
washout water at a Readi-Mix Concrete plant in north Raleigh on May 2. The inspection
of the facility and discussion with the plant manager was extremely helpful in
understanding how best to manage the drum wash water at the Greystone facility.
2. Developed a sketch of the washout basins. Based on flow rates anticipated at the
Greystone facility, a sketch of the three -chamber basin for managing washout water was
developed along with a site location sketch (see attached). '
3. Contacted Fortrans, Inc. and secured a bid for the chemical feed and monitoring
equipment associated with the remedy. The equipment has been ordered.
Greystone plans to complete development of the sediment and neutralization chambers within
the next three weeks. Once the chambers are dug they will be used immediately for drum
washout operations, thereby improving discharge quality. The pH neutralization equipment is
expected to be delivered and installed within four -weeks. The neutralization equipment will be
commissioned immediately and the system balanced as quickly as possible to meet the
requirements of your letter.
2101 Gatmay Centre Boolevard • Suite 200 • Alorrisville, ANC 27560 • Tel: [phone] • Fax: [phone]

Mr. Charles Wakild, P.E.
Raleigh Regional Office
NCDENR -- Water Quality Section
May 30, 2007
Page 2
Thank you for your attention and assistance in this matter. We are committed to remedying this
particular issue, as is evident by the corrective actions Greystone has already initiated.
If DWQ has any questions or concerns about our approach, please contact us at your earliest
convenience. Otherwise we will proceed as described. Thank you for your attention.
Sincerely,
EI, Inc.
Michael L. Walker, P.E.
Manager
Environmental & Engineering Services
MLW/
Attachments
Cc: Sam Cannady, Greystone Concrete
ENMO071004 File
2101 Gatavay Centre Boulevard • Suite 200 • Morrisville. NC 27560 • Tel: [phone] • Fax: [phone]

amett Street (US l) - _ _
North
G _----
_ ' I
_ _ - - ^ ! + Vehicle Fueling _ ^ _ - ^ -
+ + I Storage lank (10,000 _ _ -
/ Gal.)
Underground ++ Drainage Ditch
' Drainage , +.
Pipe
/ I
0
Boiler Fuel / New Truck '. .............
:.
/
..............
Storagc Tank .......... Washout
(10,000 Gal.) w' ,
Treatment System
Tank (25Q tom' ,
I
Vehicle Fueling '....:
/ ' O Tank (500 Gai.)
r / \1
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Outfall No. 002
Outfall No. 001
FIGURE NUMBER: 1 1
PROJECT NUMBER:I ENM0071004
DRAWN BY: I MLW
SIT); PLAN
Water Quality Permit Compliance
Truck Drum Washout Treatment
System
Greystone Concrete Products
Henderson, NC
SCALE: I NOT TO SCALE
liN1'IR(1\)1!'\"F:1i, I\\'I:SfIC,1l'I(115, 1\C.

GREYSTONE CONCRETE PRODUCTS, INC.
P.O. Box 680 • PHONE [phone] • FAX [phone]
HENDERSON, NORTH CAROLINA 27536
April 18, 2007
Mr. Charles Wakild, PE
Surface Water Quality Supervisor
Raleigh Regional Office
1628 Mail Service Center
Raleigh, NC 27699-1628
JOHN F. CANNADY, III. PRESIDENT
ERNESTINE C. CANNADY. VICE-PRES.
JOHN E. CANNADY, IV, EXEC. VICE•PRES.
SAMUEL. H. CANNADY, SEC.-TREAS.
Re: Notice of Violation 2007-PC-0195
Permit Nos: NCG 140138 & NCG500312
Dear Mr. Wakild:
This letter is in reply to your correspondence of March 28, 2007 concerning the recent DWQ compliance
inspection of our facility. With reference to your Notice Of Violation and directive to submit a detailed
corrective plan within 30 days of receipt of your letter, I have taken the following steps toward compliance:
(1)1 contacted our industry trade organization, The Carolinas Ready Mixed Concrete
Association, seeking assistance in locating ready mix concrete producers in my
area that have successfully installed high pH washout water control and remediation
systems. The Association supplied me with the names of several ready mix producers
in the Raleigh, NC area. One of these producers told me that he was well pleased
with a pH control manufactured and sold by Fortrans, Inc. of Wendell, NC.
(2) A few days later I met with a representative of Fortrans in my office and obtained
some specific information about their pH treatment system. Their system operates
by injecting carbon dioxide gas into a re -circulating stream of high pH water until the
correct pH level is reached. After an inspection of Greystone's mixer trucks washout
area, the Fortrans rep suggested that from his experience at other sites, I would likely
need to hire a certified engineer to re -design our washout area in order to successfully
integrate it with his system.
(3) I then contacted the environmental engineer who put together Greystone's storm water
and air pollution plans. He is with Environmental Investigations, Inc. in Durham, NC
and is very familiar with our site. He and I both agree that we should visit a ready
mix plant that has a Fortrans system installed and running. I again called the Raleigh
area ready mix producer to see if I could arrange a visit by myself and the engineer
so that we could observe the producer's Fortrans unit and ask about its operations
and effectiveness. The ready mix producer said that a visit would be fine with him

Page 2
April 18, 2007
but the persons who know the most about the pH control system would need a
couple of days to arrange their schedules to accommodate us. The producer then
asked that I call him Monday, April 23rd So that -we could agree on a date and time
to meet at his facility.
The above narrative is a brief explanation of what I have been able to accomplish to date toward your thirty days
compliance schedule deadline. In order to begin the compliance process, I have had to contact a number of
persons at different times and dates, some of whom were not immediately available due to vacations or prior
business commitments. As you can readily see, this process has taken somewhat over two weeks of my allotted
thirty day deadline just for the pH control section of your notice of violation. Since the pH remediation is by far
the most complex and costly of the several violations listed in your letter, I feel that I must devote most of my
time addressing it first. However, this does not mean that I am ignoring the other violations you listed, only that
they must assume a somewhat secondary importance to what I see as my primary task. Although I did not
mention these other violations in this letter I have, in fact, made some headway in dealing with a number of
these items and will have them corrected in two or three months.
In a short time I have gained an appreciation of the time and effort needed to create a properly constructed waste
water pH control system. With this in mind I do not think thirty days is enough time to engineer and sumit a
corrective plan that will satisfy the DWQ technical review process. Therefore I am requesting that you grant an
additional sixty (60) days, beginning on May 1, 2007, in which to complete this task.
If you have any questions or comments, please do not hesitate to call me Monday through Friday at
[phone].
Sincerely,
GREYSTONE CO MODUCT ; INC.
10
Samuel H. annady
Secretary -Treasurer
SHC: sj

Michael F. Easley, Governor
W A TF,4 William G. Moss it., Secretary
`O� QG North Carolina Department of Environment and Natural Resources
�y r Alan W. Klimek, P.E. Director
Colleen H. Sullins, Deputy Director
~ Division of Water duality
� Y
March 28, 2007
Sam Cannady
Greystone Concrete Products
2100 North Garnett Street
Henderson, NC 27537
Subject: Compliance Evaluation Inspection
Notice of Violation 2007-PC-0I95
Greystone Concrete products
Vance County
Permit Nos.: NCG140138
NCG5O0312
Dear Mr. Cannady:
On March 21, 2006, a compliance inspection of the subject facility was performed by Shannon
Langley and Ron Boone of the Division of Water Quality's (DWQ) Raleigh Regional Office.
Mr. Jim McKay of the DWQ Central Office accompanied regional staff during the inspection.
Your assistance was greatly appreciated and very helpful. A checklist for permit NCG140138 is
enclosed with this letter. The following observations were made.
The facility continues to experience elevated pH and solids values from the discharge
where the truck drum washout is located. These discharges are in violation of the subject
permit and must be addressed. After the inspection was conducted, a file review was
done. It was noted in our files that a Notice of Violation was issued to the facility dated
December 29, 2004 for violations of pH and Total suspended solids. Within 30 days of
your receipt of this letter you are directed to submit a detailed corrective action plan
including an implementation schedule leading to full and continuous compliance with
these parameters.
2. The oil changing station on site has numerous areas that need to be excavated and
disposed of properly. Runoff from the area flows directly into a small drainage ditch and
eventually to the holding pond on the lower end of your property. Pictures of the area
from the day of our inspection are attached. There was also a 55-gallon drum where old
filters were being burned. This is not an approved disposal method. Used oil was noted
in the drum along with old filters. Please submit a plan for modifications to this area that
will correct the noted violations.
3. An elevated 55-gallon drum was observed on the backside of the property near the boiler
building. You stated this is for fueling vehicles. It is highly recommended that this
fueling system be replaced.
4. The facility's SPPP was in good order and records are being kept as required.
Documentation of employee training is kept and the SPPP manual had all of the required
A
Raleigh Regional Office 1628 Mail Service Center NCDENR
Water Quality Section Raleigh, NC 27699-1628
phone [phone] Customer Service
facsimile [phone] 1-877-623-6748
One
NofhCarohna

Greystone Concrete
03/28/07
Page 2 of 3
components. We recommend noting when the manual is reviewed each year. This could
' :bd�&ne-along with.,the employee training.
-Thewater-so-ftener�at the facility discharges but is not permitted individually or covered
by the boiler blow down permit. We discussed this briefly during the inspection. By
copy of this letter the RRO is asking for guidance from our central office in addressing
this issue as it likely effects several facilities throughout the State. More information
about•this may follow.
6. Sampling of the boiler blow down water is being conducted as required by the permit.
7. The facility uses a chemical to prevent scaling but does not use algaecides or biocides. A
copy of the MSDS sheet for this chemical was provided to us during the inspection.'
8. Secondary containment is provided for the two above ground storage tanks.
9. The facility has its own pH testing equipment and sends other required samples to Tritest
for analysis. Records for these samples were reviewed and found to be.in good order.
While many of the requirements are being met, the continued discharge of high pH wastewater
and Total suspended solids require modifications in order to become compliant. A Notice of
Violation for these issues was issued in 2004. As stated above our office expects to receive a
plan for correcting those issues within 30 days of your receipt of this letter. The area where the
oil is changed must be re-evaluated in order to prevent runoff into the ditch and the existing oil
on the ground must be removed and disposed of properly. Please address this issue in your
response as well.
Please let us know if you have any questions or if we can be of assistance to you in any way.
You may reach our office at (919) 791'-4200.
Sincerely,
Charles Wakild, P.E.
Surface Water Quality Supervisor
Raleigh Regional Office
Cc: RRO files
Jim McKay — NPDES Unit
Central Files

Greystone Concrete
03/28/07
Page 3 of 3
a
omim .
dAj
m6no -fir
Oil changing
station at
Greystone
concrete products
3/21/2007
Photo taken by
Shannon Langley

Readymix Concrete Stormwater Inspection Checklist
Type of Visit ®Compliance Inspection/Program Audit ❑Tech Assistance or Recon
Location: Garnett Street in Henderson
Facility Number NCG140138Date
People Interviewed, and Titles:
Time In10:00 am Time Out 12:15 pm
SPPP Documentation (Site Plan Part II (A)(1)
1. Copy of Certificate of Coverage ®Yes ❑No Copy of Permit ®Yes ❑No Requested but not'required
2. General Location (USGS) Map shows plant ®Yes pNo, lines of discharge Part II(A)(1)(a)
to water of State ®Yes �o, Stream labeled ®Yes pNo, Latitude and longitude ®Yes ❑No
Comments:
3. Narrative Description of Practices ®Yes pNo Part II(A)(1)(b)
4. Site map ®Yes ❑No Shows flows & areas served with arrows and Part II(A)(1)(c)
% impervious surface ❑Yes ❑No, buildings ®Yes []No, process areas ®Yes ❑No,
disposal areas ❑Yes pNo, drainage structures ®Yes pNo, existing BMPs such as secondary containment
®Yes ❑No, list of potential pollutants ®Yes ❑No
Comments:
5. List of significant spills in last 3 years or certiff if none ❑Yes pNo Not checked Part II(A)(1)(d)
RRO called? ❑Yes ❑No
6. SW outfalls have been evaluated for process water ❑Yes ❑No Part II(A)(I)(e)
7. Feasibility of Changing Practices ❑Yes pNo Part II(A)(2)(a)
8. Secondary Containment ®Yes ❑No Schedule needed? ❑Yes pNo Part II(A)(2)(b)
Records of Draining Containment, Observations Made ❑Yes []No
9. BMP Summary ®Yes ❑No Part II(A)(2)(c)
10. SPRP Plan ®Yes []No, Responsible personnel still employed here? ®Yes []No Part II(A)(3)
11. PM and Housekeeping PIan ®Yes ❑No Record of Inspections? ❑Yes ❑No Part II(A)(4)
12. Em to ee training ®Yes ❑No — for everybody ❑Yes pNo Part II(A)(5)
13. Responsible parties, chain of command page ®Yes ❑No Part II(A)(6)
14. Plan updated/reviewed annually ❑Yes []-No Staff Indicated it is but not documented Part II(A)(7)
15. Stormwater Facility Inspection Program ®Yes []No Part II(A)(8)
16. This Plan Has Been Implemented (documents in manual, Part II(A)(9)
employees show awareness ®Yes ❑No Comments:
Sampling and Analytical Data Part II(C)
All Stormwater and Process Water is Recycled(IICQ ❑Yes ®No
Rain Gauge on site (not required) ®Yes [:]No
Record of an overflow ®Yes [],No Details
If not all recycled, what is allowed to discharge? Vehicle Cleaning (IIC2) ❑ Recycle overflow (IIC3
above) ❑ Wetting of Aggregate (IIC4)® Mixing drum cleanout (IIC5) ❑ Vehicle Maintenance ❑
Note: this checklist does not take the place of your permit. You are fully responsible for
following the permit.

For the topics checked in last question, Analytical data present ®Yes ❑No, Compliant? ❑Yes ®No
Details:High pH and solids
Total precip ❑Yes ❑No, Storm duration ❑Yes []No, Total flow Est. ❑Yes ❑No,Field pH ❑Yes ❑No,
Chain of custody ®Yes ❑No
Qualitative Monitorin performed semiannually ®Yes ❑No Part II(F)
Stormwater not combined with process wastewater — general runoff PartII(C)(1)
Analytical data ®Yes ❑No, Chain of Custody ®Yes ❑No, Qualitative Monitoring performed
semiannually (Section F) ®Yes []No,
If using cutoff policy, how many sample rounds
Cutoff Concentrations met ❑Yes DNo Ever have a Bypass? ❑Yes ❑No (III (C)(4)a1 &2)
Notification given? ❑Yes ❑No
Outdoor Inspection
I located all discharge points ®Yes []No No. of areas served
Sample points a ro riate ®Yes ❑No
Location if different from discharge point
Housekeeping Trash ❑Yes ❑No Dust ❑Yes ❑No
Take pH ❑Yes ®No Value(s)
Take photos ®Yes ❑No
Containment Area satisfactory ®Yes ❑No, Loose drums ❑Yes ®No, Locked drain ®Yes ❑No
Concrete disposal pile comments
Inspection Summary Comments
High pH and solids in discharge. Oil changing area needs to be worked on. Drains to ditch. A lot of
oil on the ground. Took pictures.
Recommendations:
Requirements:
Letter is to go to:
Name
Title
Address
Helpful Information at http://h2o.etir.state.nc.us/sit/Manuals Factsheets.htnl
Note: this checklist does not take the place of your•permit. You are fully responsible for
following the permit.

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Kerr T. Stevens, Director
1 � •
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
July 26, 1999
SAMUEL H CANNADY
GREYSTONE CONCRETE PROD INC. - VANCE
P.O. BOX 680
HENDERSON, NC 27536
- Subject: Reissue - NPDES Stormwater Permit -
Greystone Concrete Prod Inc. - Vance
COC Number NCG 140138
Dear Permittee: Vance County
In response to your renewal application for continued coverage under general permit NCG140000, the Division of
Water Quality (DWQ) is forwarding herewith the reissued stormwater general permit. This permit is reissued
pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between the state of North Carolina and the U.S. Environmental Protection Agency, dated December 6, 1983.
The following information is included with your permit package:
* A copy of general stormwater permit NCG140000
* A Stormwater Pollution Prevention Plan (SPPP) Certification Form_ Completion of this form is required to
certify that you have developed and implemented the SPPP as per the conditions of the permit. This form
must be completed and returned to the Division within 30 days of receipt of this letter.
DO NOT SEND the SPPP with the signed form.
* Five copies of the Analytical Monitoring form and five copies of the Qualitative Monitoring form
* A copy of a Technical Bulletin for the general permit which outlines changes in the permit, key requirements,
and addresses frequently asked questions
* A Certificate of Covera0e
Your coverage under this general permit is not transferable except after notice to DWQ. The Division may require
modification or revocation and reissuance of the Certificate of Coverage. This permit does not affect the legal
requirements to obtain other permits which may be required by DENR or relieve the permittee from responsibility
for compliance with any other applicable federal, state, or local law, rule, standard, ordinance, order, judgment, or
decree.
If you have any questions regarding this permit package please contact Bill Mills of the Central Office Stormwater
and General Permits Unit at [phone], ext. 548
Sincerely,
b".'t_'J1ey
for Kerr T. Stevens
cc: Central Files
Stormwater and Geo' -1 permits Unit Files
Raleigh Regional Office
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] Fax [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

. �1
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE No. NCG140138
STORMWATER AND PROCESS WASTEWATER DISCHARGES
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended,
GREYSTONE CONCRETE PROD INC. - VANCE
is hereby authorized to operate a process wastewater treatment system, and is hereby authorized to discharge process
wastewater and stormwater from a facility located at
GREYSTONE CONCRETE PROD INC. - VANCE
2100 N. GARNETTE STREET
HENDERSON
VANCE COUNTY
to receiving waters designated as a UT of Nutbush Creels in the Roanoke River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts 1, 11,1I1,
IV, V, and VI of General Permit No. NCG140000 as attached.
This certificate of coverage shall become effective August 1, 1999.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Si-ned this day July 26, 1999.
for Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

,tat6 of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. Samuel H. Cannady
Greystone Concrete Products, Inc.
P. O. Box 680
Henderson, NC 27536
Dear Mr. Samuel H. Cannady:
April 28, 1995
Subject: General Permit No. NCG 140000
Greystone Concrete Products, Inc.
COC NCG140138
Henderson County
In accordance with your application for a stormwater discharge permit received on December 2, 1994, we
are forwarding herewith the subject certificate of coverage to discharge under the subject state - NPDES general
permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215 .l and the
Memorandum of Agreement between North Carolina and the US Environmental Protection agency dated
December 6, 1983.
The stormwater permit you are receiving, NCG 140000, does not permit wasting concrete, dumping excess
concrete, directly into storm sewer outfalls or into waters of the state. Any facility which either dumps excess
concrete or washes excess concrete into storm sewers or waters of the state will be operating in direct violation to
both the terms of this permit and the North Carolina General Statutes. Such a discharge shall be considered an
illegal discharge and may subject the owner to enforcement actions in accordance with North Carolina General
Statutes 143-215.6A
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to
you, you have the right to request an individual permit by submitting an individual permit application. Unless
such demand is made, this certificate of coverage shall be final and binding.
Please take notice that this certificate of coverage is not transferable except after notice to the Division of
Environmental Management: The Division of Environmental Management may require modification or revocatior
and reissuance of the certificate of coverage. _r
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Environmental Management or permits required by the Division of Land Resources, Coastal Area
Management Act or any other Federal or Local governmental permit that may be required.
If you have any question concerning this permit, please contact Mr. Bill Mills of telephone number 919/733-
5083, extension 548.
Sincerely,
Original signed B9
Coleen H. Sullins
A. Preston Howard, Jr. P.E.
cc: Raleigh Regional Office
Mr. Roosevelt Childress, EPA
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
GENERAL PERMIT NO. NCGI40000
CERTIFICATE OF COVERAGE NO, NCG14013$
STORMWATER DISCHARGES
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended,
Greystone Concrete Products, Inc.
is hereby authorized to discharge stormwater and rinse waters from a facility located at
Hwy. US 1 North
Henderson
Vance County
to receiving waters designated as an unnamed tributary to Nutbush Creek in the Roanoke River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III
and IV of General Permit No. NCG140000 as attached.
This Certificate of Coverage shall become effective April 28, 1995.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day April 28, 1995.
`� �tilisrt5
Cc4een H.
A. Preston Howard, Jr., P.E., Director
Division of Environmental Management
By Authority of the Environmental Management Commission

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