NCG140104_COMPLETE FILE - HISTORICAL_20170706

STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT N0.
DOC TYPE
LN HISTORICAL FILE
❑ MONITORING REPORTS
DOC DATE
❑ Jib) 1 b b
YYYYMMDD

i
NCDENR
EMYIR —el -0 N/� .0 ft50 cn
Division of Energy, Mineral & Land Resources
Land Quality Section/Stormwater Permitting
National Pollutant Discharge Elimination System
PERMIT NAME/OWNERSHIP CHANGE FORM
FOR AGENCY USE ONLY
Date Received
Year
Month
Day
61,,,) ba. CAD
I. Please enter the permit number for which the change is requested.
NPDES Permit
(or) Certificate of Coverage
N C. S 0
N C G 1 4 0 l 0 4
11. Permit status prior to requested change.
a. Permit issued to (company name):
Kerr's Hickory Ready Mixed Concrete
b. Person legally responsible for permit:
Roger Kerr
First Ml Last
i ED
President
Title
REC1-
P.O. Box 1924
Permit Holder Mailing Address
t AND Q� Al1T`( Hickory N.C. 28603
I3El�R
f ER P�RMIjTING
City State Zip
;;ZORMWA
(828 322-3157 ( )
Phone Fax
c. Facility name (discharge):.,, �` �
d. Facility address: Kr_ ' """ !ff
1 126 l" Ave. SW
JUL 0 6 z017
Address
CCNTRAL FILE
Hickya NC 28602
SE'TION
City State Zip
-Robert Canipe
e. Facility contact personr)WR�
(S28 ) 322-3157
First 1 MI 1 Last Phone
Ill. Please provide the following for the requested change (revised permit).
a. Request for change is a result of:
® Change in ownership of the facility
❑ Name change of the facility or owner
If other please explain:
b. Permit issued to (company name):
Southern Concrete Materials
c. Person legally responsible for permit:
James Combest
First Ml Last
President
Title
PO Box 5395
Permit Holder Mailing Address
Asheville NC 28813
Citv State Zip
[phone] [e-mail]
Phone E-mail Address
d. Facility name (discharge):
e. Facility address:
Address
City State Zip
f. Facility contact person:
First Ml Last
Phone E-mail Address
IV. Permit contact information (if different from the person legally responsible for the permit)
Revised Jan, 27, 2014

0

NPDES PE'RM1T NAME/OWNERSHIP CHANGE FORM
Page 2 of 2
Permit contact: Jeff Lamm
First Ml Last
Vp-Environmental And Safety
Title
PO Sox 5395
Mailing Address
Asheville NC 28813
City State ZipV
[phone] jlamm@,scmusa.com
Phone E-mail Address
V. Will the permitted facility continue to conduct the same industrial activities conducted prior
to this ownership or name change?
® Yes
❑ No (please explain)
Vl Required Items: THIS APPLICATION WILL BE RETURNED UNPROCESSED IF ITEMS
ARE INCOMPLETE OR MISSING:
❑ This completed application is required for both name change and/or ownership change
requests.
❑ Legal documentation of the transfer of ownership (such as relevant pages of a contract deed,
or a bill of sale) is required for an ownership change request. Articles of incorporation are
not sufficient for an ownership change.
The certifications below must be completed and signed by both the permit holder prior to the change, and
the new applicant in the case of an ownership change request. For a name change request, the signed
Applicant's Certification is sufficient.
PEEWTTEE CERTIFICATION (Permit holder prior to ownership change):
1, , attest that this application for a name/ownership change has been reviewed and is accurate and
complete to the best of my knowledge. I understand that if all required parts of this application are not
completed and that if all required supporting information is not included, this application package will be
returned as Me- I te.
Sigiiature Date
APPLICANT CERTIFICATION
[test that this application for a name/ownership change has been reviewed and is accurate and
e best f my knowledge. I understand that if all required parts of this application are not
tmpif all required supporting information is not included, this application package will iobe
colete. _ n
Signatu Date
PLEASE SEND THE COMPLETE APPLICATION PACKAGE TO:
Division of Energy, Mineral and Land Resources
Stormwater Permitting Program
1612 Mail Service Center
Raleigh, North Carolina 27699-1612
Revised Jan. 27, 2014

RECEIVED
JUN o 5 2017
SD�NR-LAND QDALITy
TORMWATER PERMITTING
ASSET PURCHASE AGREEMENT
by and among
SOUTHERN CONCRETE MATERIALS, INC., it successors, assigns or affiliates,
KERR SAND COMPANY, LLC,
KERR'S HICKORY READY -MIXED CONCRETE COMPANY, INC.,
and
ROGER S. KERR, NAMES P. KERR, JR., KATRINA K. HAYES, and MARY K.
LUCKADOO
March 27, 2017

ASSET PURCHASE AGREEMENT
THIS ASSET PURCHASE AGREEMENT (together with all Schedules and
Exhibits hereto, this "Agreement'), dated as of March 27, 2017, is entered into by and among
SOUTHERN CONCRETE MATERIALS, INC., a North Carolina corporation having its principal
office at 120 %z N. Church St., Salisbury, NC 28144, or its successors, assigns or affiliates
(collectively, "Buyer"), KERR'S HICKORY READY -MIXED CONCRETE COMPANY, INC.,
an North Carolina corporation having its principal office at 1126 1S1 Ave. SW, Hickory, NC 28602
("Kerr's FIRM"), KERR SAND COMPANY, LLC, a North Carolina limited liability company
having its principal office at 17 121h St, SW, Hickory, NC 28602 ("Kerr Sand" and, together with
Kerr's HRM, "Seller"), and Roger S. Kerr ("Roger"), James P. Kerr, Jr. ("kMgf), Katrina K.
Hayes ("Katrina") and Mary K. Luckadoo ("Mary"). Roger and James are sometimes collectively
referred to herein as "Selling Principals." Roger, James, Katrina and Mary are sometimes
collectively referred to herein as "Selling Owners." Seller and Selling Owners are sometimes
collectively referred to herein as "Selling Parties." The parties to this agreement are sometimes
referred to herein individually as a "Party" or collectively as the "Parties."
RECITALS:
Subject to the terms and conditions of this Agreement, Buyer has agreed to purchase from
Seller, and Seller has agreed to sell to Buyer, Seller's ready -mixed concrete business and related
assets as set forth herein (the "Business") for the consideration described herein.
ARTICLE I
SALE AND PURCHASE OF ASSETS
1.1 Transfer of Assets. Seller agrees to sell, assign, transfer and deliver to
Buyer, and Buyer agrees to purchase and accept from Seller, at the Closing (as defined below) all
of the assets and properties of Seller of every kind and description used by Seller in connection
with the operations of the Business, but excluding certain assets described in Section 1.3. The
assets being sold hereunder are collectively referred to as the "Purchased Assets," and the assets
described in Section 1.3 are collectively referred to as the "Excluded Assets."
1.2 Purchased Assets. The Purchased Assets specifically include, but are not
limited to, the following:
(a) _Real Property. All real property and interests therein held, owned,
leased, subleased, licensed or otherwise occupied or used by Seller (with all easements and
other rights appurtenant to such property, the "Real Property').
(b) Tangible Personal Property. All machinery, equipment, furniture,
office equipment, supplies, materials, vehicles and other items of tangible personal
property of every kind owned by Seller and used in connection with the Business,
including, without limitation, those listed on Schedule 1.2(b) (the "Tangible Personal
Property"), and any additions or replacements made between the date of this Agreement
and the Closing Date, together with any express or implied warranty by the manufacturers
or sellers of any item thereof.
2

(c) Inventories. Except as determined by Buyer in its sole discretion
pursuant to Section 2.4, all inventories of the Business as of the Effective Time (defined
below) including, without limitation, all finished goods, work in process, raw materials and
spare parts (the "Inventory"), the location and net values of which are included on Schedule
1.2(c).
(d) Contracts. All of Seller's interest in the contracts, leases of personal
property, other leases and other agreements described on Schedule 1.2(d) (the "Contracts").
(e) Intellectual Pro ert . All of the intellectual property of Seller used
in connection with the operations of the Business, including, without limitation, the
following: (a) all trademarks, service marks, trade names, logos (the "Marks") and all
registrations relating thereto; (b) all copyrighted works and registrations therefor; (c) all
patents and applications therefor; and (d) all confidential or proprietary processes,
formulas, trade secrets .and technical and other similar information, all of which are
described on Schedule 1.2(e) (the "Intellectual_ Property"), together with the goodwill
related thereto and any royalty income therefrom accruing after the Effective Time.
(f) Permits. All permits, authorizations, certificates, approvals and
licenses relating to the operation of the Business, including, without limitation, those listed
on Schedule 1.2(f) (the "Permits").
(g) Records. All records, technical data, asset ledgers, books of
account, inventory records, budgets, customer and supplier records, payroll and personnel
records, computer programs, correspondence and other files of Seller created or maintained
in connection with the Business.
(h) Claims. All of Seller's rights to any causes of action or claims
arising in connection with the Business.
(i) Goodwill. Any and all of Seller's goodwill in and going concern
value of the Business.
0) 4therAssets. All other assets of any kind or description, tangible or
intangible, which are owned by Seller and used in or relate to the operations of the
Business.
In addition to the foregoing, Selling Principals shall sell, assign, transfer and convey to
Buyer, and Buyer shall purchase, acquire and accept from Selling Principals, free and clear of all
Liens and encumbrances, all of Selling Principals', right, title and interest in and to their own
general know-how and personal goodwill associated with the Business (the "Personal
Inta�bles").
1.3 Excluded Assets. The following assets shall be excluded from the
Purchased Assets and shall be retained by Seller:
(a) Cash. All cash on hand and on deposit in banks, cash equivalents
and investments.
3

IN WITNESS WHEREOF, each of the parties hereto has caused this Agreement to be
signed by its duly authorized officer as of the date first above written.
Buyer:
SOUTHERN CONCRETE MATERIALS, INC.
By:
Name:
Title:
Sellers:
KERR'S HICKORY READY -MIXED
CONCRETE COMPANY, INC.
Title: A!Z
KERB SAND COMPANY, LLC
By: l .emu
Nara ' �a.►:�r !�'rr
Title:�M�r
SeDing Owners:
Rod r S. Kerr
Signature Page to Asset Purchase Agreement

IN WITNESS WHEREOF, each of the parties hereto has caused this Agreement to be
signed by its duly authorized officer as of the date first above written.
Buyer:
CON TE MATERIALS, INC.
T--
Sellers:
KERR'S HICKORY READY -MIXED
CONCRETE COMPANY, INC.
By.
Name:
Title:
KERR SAND COMPANY, LLC
By:
Name:
Title:
Sellire Owners:
Roger S. Kerr
James P. Kerr, Jr.
Katrina K. Hayes
Mary K. Luckadoo
Signature Page to Assel Purchase Agreement

North Carolina
Beverly Eaves Perdue
Governor
Mr. Roger Kerr
Kerr's FIRM Concrete
P.O. Box 1924
Hickory, NC 28603
Dear Mr. Kerr:
LPIWA
NC®ENR
Department of Environment and
Division of water ouality
Coleen H. Sullins
Director
July I, 2011
Natural Resources
Dee Freeman
Secretary
Subject: Authorization to Construct
Kerr Concrete — Hickory Plant Recycle System
COC No. NCG140104
Catawba County
The Division of Water Quality (DWQ) received your request to construct a process
wastewater recycle system at your Hickory Plant on March 22, 2011, and again with revisions on
June 10, 2011. In accordance with your request, you are authorized to construct the recycle
system as per the approved plans, effective today.
The Mooresville Regional Office, telephone number [phone], shall be notified at
least forty-eight (48) hours in advance of operation of the installed facilities so that an in -place
inspection can be made. Such notification to the regional supervisor shall be made during the
normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State
Holidays.
Upon completion of construction and prior to operation of this permitted facility, a
certification must be received from a professional engineer certifying that the permitted
facility has been installed in accordance with the NPDES Permit, the associated
Authorization to Construct, and the approved plans and specifications. Please mail the
certification (attached) to the Stormwater Permitting Unit, 1617 Mail Service Center, Raleigh,
NC 27699-1617.
Please note that any future construction, installation, or modification of wastewater
treatment facilities (including process wastewater recycle systems) will require an Authorization
to Construct (ATC) prior to construction per 15A NCAC 214 .0138 & .0139. You must submit,
in triplicate, plans/specifications and design calculations, stamped and sealed by a professional
engineer, with a letter requesting an ATC to the Stormwater Permitting Unit, 1617 Mail Service
Center, Raleigh, NC 27699-1617.1
Wetlands and Stormwater Branch
1617 Mail Service Center, Ralegh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Ralegh, North Caroiina 27604
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet. www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Actaon Employer
NorthCarolina
;Vaturallry

Mr. Roger Kerr
Kerr FIRM Concrete — Hickory Plant Recycle System ATC
NCG 140104
July 1, 2011
One (1) set of approved plans and specifications is being forwarded to you. The
Permtttee shall maintain a copy of the approved plans and specifications on File for the life of the
facility. If you have any questions concerning this Authorization to Construct, please contact'
Robert Patterson at telephone number [phone], or at [e-mail].
Sincerely,
ORIGINAL SIGNED BY
BETHANY GEORGOULIAS
for Coleen H. Sullins
cc: Mooresville Regional Office
Central Files
Stormwater Permitting Unit Files
enclosure

Mr. Roger Kerr
Kerr FIRM Concrete — Hickory Plant Recycle System ATC
NCG 140104
July 1, 2011
Engineer's Certification (COC No. NCG140I 4)
I, , as a drily registered Protessional Engineer in the
State of North Carolina, having- been authorized to observe (periodically, weekly, full time) the
construction of the project, ,
Prrrject lVarrre
1 ocal.ion
for the
Permittee Hereby state that, to the best of my abilities, due care and diligence was used in the
observation of the following- installations:
• Construction of a process wastewater recycle system at the Kerr- FIRNI Concrete — Hickory
Plant.
I certify that the construction of the above reference([ project was observed to be built within
substantial compliance and intent of the approved plans and specifications.
Signature
Date
Registration No.
Mail this Certification to: Stormwater Permitting Unit
NC Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699- 1617

Patterson, Robert
From: Bou-ghazale, Samar
Sent: Wednesday, June 22, 2011 9:26 AM
To: Patterson, Robert
Subject: RE: NCG140104 ATC. - Kerr Concrete - Hickory Plant
Hi Robert,
We don't have any concern for the ATC issuance.
Thank You and Good Day.
Samar
From: Patterson, Robert
Sent: Wednesday, June 22, 2011 8:20 AM
To: Bou-ghazale, Samar
Subject: FW: NCG140104 ATC - Kerr Concrete - Hickory Plant
Samar,
Does MRO have any concerns with issuing the ATC for the subject site? I got the sealed plans, and will forward them to
you.
Thanks.
Robert
From: Patterson, Robert r
Sent: Tuesday, June 14, 2011 8:03 AM
To: Bou-ghazale, Samar
Subject: NCG140104 ATC - Kerr Concrete - Hickory Plant
Samar,
I'm sending you a copy of the add. info. I received for the subject ATC request. I'm satisfied with what the submitted
meets the requirements of the permit. I just need to get sealed plans sent to me (I'll send you a copy when I get them).
The plans they submitted this time were not sealed.
Please let me know if MRO has any concerns with issuing the ATC.
Thanks.
Robert D. Patterson, PE
Environmental Engineer
NCDENR I DWQ j Stormwater Permitting
1617 Mail Service Center, Raleigh, NC 27699-1617 (Mail)
512 N. Salisbury St, Raleigh, NC 27604 1 91h Floor (Location & Parccls)
[phone] Phone [phone] Fax I Robert.Pattersonnncdenngov Email
Website: http://portal.ncdenr.orp/web/wq/ws/su
,A Before printing this email, please consider your budget and the environment.
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties.

Chalam Pakala Engineering and Environmental Solutions
10017 Allyson Park Dr., Charlotte, NC 28277 Tel: [phone] Fax: [phone]
May 24, 2011
Mr. Robert Patterson
NC DENR-Stormwater Permitting Unit
1617 Mail Service Center
Raleigh, North Carolina 27669-1617
Re: Response to the Additional Information Requested per the NC DENR
Letter Dated March 29, 2011
Kerr HRM Concrete — Hickory Plant
IA26 1' Ave. SW.
Hickory, Catawba County, North Carolina 28602
CPEES Project No. 1134-001 D �
NPDES General Permit No.: NCG140000
Certificate of Coverage: COC NCG140104 J(111j j 0 2011
Dear Mr. Patterson:
On behalf of Kerr Concrete (KERR), CP Engineering and Environmental Solutions (CPEES) is
pleased to respond to your additional information request dated March 29, 2011. The responses
to your questions are as follows:
1) The calculations for the recycle system do not include a water balance analysis. Now
will all the captured water from the 25 yr storm event be reused so that the system does
not overflow?
Response
KERR had decided to reuse the water collected in the pits in their batch operations. As per
the attached calculations, approximately 7.8 days (60 to 70 batches per day and 250
gallons/batch) are required to use the collected water (125,888 gals) in the plant.
2) The plan shows 2 separate drainage areas (DA), so the calculations should be done
separately for each to show that the 25yr storm event (plus I ' freeboard) for each
separate system does not produce a discharge.
Response
The combined drainage area between the DA-1 and DA-2 is 0.76 acres. Per the new drawing
(Figure 3), the two drainage areas (DA-1 and DA-2) are connected via pipe/channel line. In
addition, per our previous calculations, the five pit system, four pits in DA-1 and one pit in
the DA-2 are sufficient to hold a 25-yr storm event. In addition, no drainage beyond the
marked drainage areas on the drawing will flow into the pit system since these drainage
boundaries will be bermed to avoid any external flow beyond the drainage areas into the pit
system.

V: 0, AK !01 9d- 0 :114 WYM
2. Is p it'
IV I
It

Chalam Pakala Engineering and Environmental Solutions
10017 Allyson Park Dr., Charlotte, NC 28277 Tel: [phone] Fax: [phone]
3) Based on the contours, the actual DA for DAI appears that it is larger than what is
shown on the delineation
Response
The drainage areas marked on the drawings are the actual drainage areas that would be
contributing to the pit system. The delineation would be done via either raised berms or new
contouring to the areas. Therefore, the delineated areas are correct and their contribution to
the pit system has been accounted for in the recycle system.
4) The size of the pit#5 does not appear large enough to contain the 25 yr storm (plus 1 ' off
freeboard) from DA2. Please verb
Response
As responded in question #2, the DA-1 and DA-2 are now combined and the total pit volume
from all 5 pits is sufficient to contain 25-yr storm event from both drainage areas. The
attached calculation show the total pit volume required to contain the 25-yr storm event and
the water balance at the site. Figure 3 shows the drainage areas and the connection between
DA-1 and DA-2,
It is my pleasure to complete this important project for Kerr Concrete and please call me at (704)
5414042 if you have any questions or comments on this A to C permit application package.
Respectfully submitted,
CP Engineering and Environmental Solutions
(A Cost Effective Solution Provider for Manufacturing)
Chalam V. Pakala, P.E.
Registered, 19807
Managing Principal
Attachments: Figures and Pit Volume & Water Recycle Calcs

N
Mot

TABLE
KERR CONCRETE
HICKORY - NORTII CAROLINA
g, Size of a Concrete Recycling System for Process Washwaterl Starmwaterfo Ready, Mix Concrete Plant.'
,e M.
Size for a 25 yr, 24-4ir Runoff Volume-
Use SCS Peale Discharge
Drainage Area =
0.75 acres a 33,105 sq fl.
Elevatlan e
3 R (Obtained eam the toe tap* map)
Length a
242 A (Obtained from the site tape map)
Te •
5 adh (B.me)
Slope •
52%
CN
g8
RentaO=
5,25 Inches (Rd Fig 8.03k)
Rainfall Irdensity (Avenge Asheville and Charlortai •
635 Mar (0.03f and 8.03g)
Runoff Depth a
5.8 arches (Table 8.03e)
Runoff Vakarre a
Drainage Area x Ruoff Depth
15.001 W A.
Design Recycle pits to hold -
15,001 cu IL A rNMnun of 4 pits with a buffer of 1 additional pit for emergeneiea
CIA
C. = 4.78/ Peak rale of nmlf in a6ie fed per wcard
Q25 - 25 Yr, 24-hr Discharge =
C • 09 Runoff Coeftenl
i • 7 Avenge intercity or Rainfall In irlesitr for a storm duration -tine a1 corcerfratlon
A • 0,76 Drairalie ares
Sfm for Weir for Oi, •
3,0 L H n
03 =
4.788
L -
3
Length of the weir IR)
H-
1.5
Hera of the weir (A) Assn 0,5A
4, 108 -3.0 x L = (0 5)
o°
Length of the weir =
1 it
Number of Pits
5
Capacity of pits
Existing Pe 1 (Flat Area Vol urej
L •
40
f1
W a
12
5
AREAf)dt •
2,400 cubic feet.
D-
5
A
Existig PA t (Slope Ana Volume)
L •
20
A
W e
12
A
AREUVpi •
am cubic feet.
D
5
11
Existing Pi 2 IFlat Area Vok")
L •
40
A
W •
12
A
AREAfpa -
2,880 cubic Teel.
Da
8
A
Existing Pit 2 (Slops Area Vokxne)
L e
20
A
W a
12
A
AREA!pk •
720 cut is feet.
Da
8
A
Existing Phs 3 A 4 IFlat Area Volume)
L s
40
e
W .
12
A
AREA4* =
3.840 cubic feet.
D •
8
A
7.M Cubic feet total
Existing Pits 3 IL 4 IS" Area VoAarhe)
L .
20
5
W a
12
11
AREAlpit -
950 cubic fed.
D s
S
A
1,92D cubic feel total
Now Pit 5 (Flst Area Volume)
L •
10
A
W •
12
A
AREA" -
390 tic fed.
0•
3
A
Pit 5 (Slope Area Vokme)
L •
15
A
VV •
12
11
AREAlpk •
2r0 cubic fed.
D•
3
A
Total Pit Volume (CFT) =
113,1330 cubic fed > 16,001 cuble feet
or
t25,88a
WATER BALANCE ANALYSIS
Range
e of battles per day
e0
70
batches
Water per yard
25
gab
Gals of weer per batch (10 yards per batch)
250
gals
Gals of water recycled it the plant
15000
11500
gals
i of days the wrier reused in the plat is -
9.4
7.2
gels
AVG e of Dap water =Wd in the pWt
7.8
CRalam Palala, PE
CP E*glr—"ing
Ter: 704.541-4042
CPEES Project No. 1134-MI

MODE R
North Carolina Department of Environment and Natura
Beverly Eaves Perdue
Governor
Mr. Roger Kerr
Kerr's HRM Concrete
PO Box 1924
Hickory, NC 28603
Dear Mr. Kerr:
Division of Water Quality
Coleen H. Sullins
Director
March 29, 2011
Resources
Subject: Additional Information Request
COC NCG140104 - ATC
Kerr's HRM Conrete — Hickory Plant
Catawba County
Dee Freeman
Secretary
Your request for Authorization to Construct (ATC) for your facility permitted under COC
NCG 140104 was received by the Stormwater Permitting Unit on March 22, 2011. However, a
review of the application package showed that the application is incomplete. Before the request
can finish being processed please provide information regarding the following:
1. The calculations for the recycle system do not include a water balance analysis. How will all
the captured water from the 25-yr storm event be reused so that the system does not overflow?
2. The plan shows 2 separate drainage areas (DA), so the calculations should be done separately
for each to show that the 25-yr storm event (plus 1' of freeboard) for each separate system
does not produce a discharge.
3. Based on the contours, the actual DA for DA1 appears that it is larger than what is shown on
the delineation.
4. The size of pit #5 does not appear large enough to contain the 25-yr storm (plus 1' of
freeboard) from DA2. Please verify.
If you have any questions concerning this matter, please contact Robert Patterson at telephone
number [phone] or at [e-mail].
Wellands and Stormwater Branch
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N, Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet'. www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Empfoyer
One
NorthCar olina
Naturally

Mr. Roger Kerr
NCG 140104 ATC -- Hickory Plant
March 29, 2011
cc
Sincerely,
Robert D. Patterson, PE
Stormwater Permitting Unit
Mr. Chalam Pakala, PE — Chalam Pakala Engineering & Environmental Solutions
Mooresville Regional Office — Michael Parker
SPU Files
Page 2 of 2

:. ^
A 91,
,ftT&A
NC®EINR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
March 2, 2011
Mr. Roger Kerr
Kerr's HRM Concrete
P.O. Box 1924
Hickory, North Carolina 28603
Subject: NPDES Stormwater General Permit
NCG140000 Applications —
Dee Freeman
Secretary
Lenoir Plant Receipt Acknowledgment;
Caldwell County
Hickory, Maiden, and Morganton Plants:
Application Returns (Return #s 1263, 1264, & 1265)
Catawba and Burke Counties
Dear Mr. Kerr:
On February 24, 2011, the Division of Water Quality received the following application packages:
• Notice of Intent (NOI) requesting coverage and an Authorization to Construct (ATC) under general
stormwater and wastewater permit NCG140000 for the Lenoir Concrete Plant. We have accepted this
application, and it will be assigned to a Stormwater Permitting Unit (SPU) staff member for review.
A request for an Authorization to Construct (ATC) only for modifications to the wastewater treatment
system at the Hickory Concrete Plant. [Please note this facility is already covered under NCG140000
by Certificate of Coverage No. NCG140104] A preliminary review indicated some application copies
for this facility contained incorrect NOI forms from other plants and/or typos. Your consultant, Mr.
Chuck Pakala, requested the entire application package be returned directly to him to correct these
problems. Therefore, we are returning all three copies to Mr. Pakala (Return #1263).
There is no application fee for an ATC only. For that reason, check number 054747 is being returned to
you directly.
Wetlands and Stormwater Branch
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
None
rthCarolina
Natmally
Internet: vvww. crvaterquality.org
An Equal Opportunity 4 Affirmative Action Employer
r

Kerr's HRM Concrete
Application Returns (91263, 1264, 1265)
March 2, 2011
• Notice of Intent (NOI) requesting coverage and an Authorization to Construct (ATC) under NCG140000
for the Maiden Concrete Plant. A preliminary review indicated some application copies for this facility
contained incorrect NOI forms from other plants and/or typos. Your consultant, Mr. Chuck Pakala,
requested the entire application package be returned directly to him to correct these problems.
Therefore, we are returning all three copies to Mr. Pakala (Return #1264).
Notice of Intent (N01) requesting coverage and an Authorization to Construct (ATC) under general
stormwater and wastewater permit NCG140000 for the Morganton Plant. A preliminary review
indicated some application copies for this facility contained incorrect N01 forms from other plants
and/or typos.
After further review, the Stormwater Permitting Unit (SPU) has determined the submitted materials
are insufficient for us to continue processing this application. Therefore, we are returning the entire
application package to you (Return #1265). A summary of items is included below to help you address
deficiencies so that you can resubmit the application:
1. Plans and Specifications: No plans and specifications for the recycle system were included with the
application package. The detail for the Temporary Sediment Trap is not relevant to the NCG140000
application. No detailed plans or As -Built drawings were included for what was described as a five pit
recycle system. In addition, the plans submitted for the site map only show four pits. As -Built
drawings of the recycle pit system with current dimensions should be provided.
2. Site Map: The site map provided was difficult to read, was not accurate, and did not show the detail to
substantiate information in the appendices of the application. Please verify the map includes all the
information requested in the NOI final checklist. For example, the map:
a. did not delineate drainage areas DA-1 through DA-4 discussed in the text, or any drainage
areas, or show direction of flow;
b. did not show a five pit recycle system (inconsistent with other information in the application).
c. did not show the location of stormwater discharge outfalls;
d. did not show where materials are stored (e.g., aggregate piles) or industrial activities occur;
e. did not clearly label the stormwater wet detention basin or show the flow it captures.
3. Recycle System Design Calculations: The calculations for the recycle system capacity do not include
the drainage area from the stockpile areas (we were unable to confirm without sufficient As -Built
plans). The N0l application indicates that stockpiles are wetted down. It is not clear whether or not
that wastewater flows to the recycle system. If that flow is not captured by the recycle system,
process wastewater is commingling with stormwater and being discharged elsewhere.
Please verify that any plans and/or calculations prepared by previous consultants adequately support
the N01 if they are included as supporting documents. Attachments prepared by Mr. Nathan Turner indicated
his documents had been submitted to the Stormwater Permitting Unit in August 2008; however, our Unit has
no record of receiving or returning this project application as part of an NPDES NCG140000 application. Could
you provide information about when/if this project was submitted to the SPU?

Kerr's HRM Concrete
Application Returns (#1263, 1264, 1265)
March 2, 2011
The return of these applications 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.
The NO1 application package for the Morganton Plant is being returned to you with this letter. The NOI
application packages for the Hickory and Maiden Plants are being forwarded to your consultant, per his
request, to address the needed NO1 corrections in a timely fashion. However, the check included with the ATC
request for the Hickory Plant is being returned to you directly because no fee applies. If you have any
questions concerning this matter, please contact Bethany Georgoulias at [phone].
Sincerely,
r.
U �b
for Coleen H. Sullins
cc: Asheville Regional Office/ Linda Wiggs
Mooresville Regional Office
Mr. Chalam "Chuck" Pakala/ 10017 Allyson Park Dr./ Charlotte, NC 28277 (with attachments)
Central Files
Stormwater Permitting Unit Files
enclosure

_'A 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�•
NCDEN.R
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
July 26, t999
ROGER KERR
HICKORY READY MIX CONCRETE CO INC.
P.O. BOX 1924
HICKORY, NC_ 28603 _
Subject: Reissue - NPDES Stormwater Permit
Hickory Ready Mix Concrete Co Inc.
COC Number NCG 140104
Catawba County
Dear Permiuee:
In response to your renewal application for continued coverage under general permit NCG 140000, 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 NCG 140000
* 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 Coverage
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 Darren England of the Central Office
Stormwater and General Permits Unit at [phone], ext. 545
Sincerely,
for Kerr T. Stevens
cc: Central Files
Stormwater and General permits Unit Files
Mooresville 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

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE No. NCG140104
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,
HICKORY READY MIX CONCRETE CO INC.
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
HICKORY READY MIX CONCRETE CO INC.
1126 1ST AVE SW
HICKORY
CATAWBA COUNTY
to receiving waters designated as Hickory NISSS & Geitner Branch in the Catawba River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II,1II,
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.
Signed this day July 26, 1999.
for Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

State 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
January 20, 1995
Roger Kerr
Kerr'S Hickory Ready Mixed Con
P.O. Box 1924
Hickory, NC 28603
Subject: General Permit No. NCG140000
Kerr'S Hickory Ready Mixed Con
COC NCG 140104
Catawba County
Dear Roger Kerr
In accordance with your application for discharge permit received on November 28, 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--1-and-- - ---
the Memorandum of Agreement between North Carolina and the US Environmental Protection agency dated
December 6, 1983.
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
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 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. STEVE ULMER at telephone
number 9191733-5083.
cc: Mooresville Regional Office
P.O. Box 29535, Raleigh, North Carolina 27626-0535
An Equal Opportunity Affirmative Action Employer
Sincerely,
Original Signed 1,3y
Coleen H. Sullins
A. Preston Howard, Jr. P.E.
Telephone [phone] FAX [phone]
50% recycled/ 10% post -consumer paper

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO, NCG140104
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,
Kerr's Hickory Ready Mixed Concrete Co., Inc.
is hereby authorized to discharge stormwater and rinse waters from a facility located at
1126 1st Avenue SW
Hickory
Catawba County
to receiving waters designated as the City of Hickory Storm Sewer System and Geitner Branch in the Catawba River
Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, I1I
and IV of General Permit No. NCG140000 as attached.
This Certificate of Coverage shall become effective January 20, 1995.
This Certificate of Coverage shall remain in effect for die duration of the General Permit.
Signed this day January 20, 1995.
Original Signed 9Y
Cr✓leen H. Suliins
A. Preston Howard, Jr., F.E., Director
Division of Environmental Management
By Authority of the Environmental Management Commission

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Permit Application for Authorization to
Construct (A to C) a Process / Stormwater
Recycling System
NPDES General Permit No.: NCG140000
Certificate of Coverage: Issued
Prepared for:
Xerr Concrete- Hickory Plant
1126 lst Ave. SW.
Hickory, Catawba County, North Carolina 28602
CPEES Project No. 1134-001
February 2, 2011
FEB 2 4 Zp�1
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` SEAL''
19807
e�4%4(1
MAR �0?1
Prepared by:
Chalam Pakala Enineering and Environmental Solutions
10017 Allyson Park Dr.,
Charlotte, North Carolina 28277
Tel [phone] / Fax: [phone]
Email: [e-mail]

•
February 2, 2011
Mr. Ken Pickle, Environmental Engineer 11
NC DENR — Stormwater Permitting Unit
1617 Mail Service Center
Raleigh, North Carolina 27669-1617
Re: Permit Application for Authorization -to -Construct (A to C) a Proposed
Process I Stormwater Recycling System for Hickory Concrete Plant
Kerr HRM Concrete — Hickory Plant
1126 1" Ave. SW.
Hickory, Catawba County, North Carolina 28602
CPEES Project No._1134-001
NPDES General Permit No.: NCG140000
Certificate of Coverage: Issued
Dear Mr. Pickle:
Kerr Concrete (KERR) is pleased to submit the attached Authorization -to -Construct (A to C)
permit request report along with construction drawings for the Proposed Process / Stormwater
Recycling System for Kerr Concrete— Hickory Concrete Plant located in Hickory, North
is
Carolina. The A to C Report includes:
• NC DENR NPDES General Permit Application NCG 140000;
• Check for $100 made payable to NC DENR;
• Site map showing the delineation of drainage area contributing to the process
wastewater;
• Site layout map showing the proposed location of the process 1 stormwater recycling
system;
• 25 yr 24-hr stormwater runoff calculations;
• Detailed design, construction drawings along with construction specifications for the
proposed process and stormwater recycling system;
• Site Location Map;
KERR sincerely appreciates your cooperation and progress of this project. Please call me at 828-
322-3157 or Mr. Chuck Pakala of CPEES at 704-541-4042 if you have any questions or
comments on this permit request.
Respectfully submitte ,
Rogef Kerr
VP Sales and Treasurer
0 Attachments: A to C Permit Application Package

Permit Application for Authorization to Construct
(A to Q a Process / Stormwater Recycling System
Kerr Concrete— Hickory Plant
Hickory, North Carolina
NPDES General Permit No.: NCG140000
Certificate of Coverage: Issued
TABLE OF CONTENTS
1.0 FACILITY DESCRIPTION..............................................................................................1
2.0 FACILITY OPERATIONS................................................................................................1
3.0 PROCESS WASHWATER CALCULATIONS...............................................................2
4.0 STORMWATER RUNOFF CALCULATIONS FOR A 25 YEAR AND 24-HR RAIN
EVENT....................................................................................................................................... 3
5.0 STORMWATER I PROCESS WASHWATER RECYCLE SYSTEM DESIGN AND
CONSTRUCTION DETAILS.................................................................................................4
• 6.0 A to C CONSTRUCTION PERMIT APPLICATION....................................................4
TABLES
Table 1: Runoff Volume Calculations for a 25 yr, 24-hr Storm Event
FIGURES
Figure 1: Site Location Map
Figure 2: Aerial View of Surrounding Properties around the Hickory Plant
Figure 3: Site Layout Map with Buildings, Dry Mix Concrete Plant and Proposed Location of
Process Washwater I Stormwater Recycle System
Figure 4: Process Washwater and Stormwater Recycle System Construction Details
ATTACHMENTS
Attachment A: Runoff Volume and Weir Design Calculations with Backup
Attachment B: NC DENR — Division of Water Quality Stream Classification Table for
- Catawba County
CP Engineering and Environmental Solutions i A to C Permit Application
Tel: [phone] Kerr HRM Concrete - Hickory
Email: cvpakala(a�carolina.rr.com 1126 1" Ave. SW.,

Permit Application for Authorization to Construct
(A to Q a Process /Stormwater Recycling System
Kerr Concrete— Hickory Plant
Hickory, North Carolina
NPDES General Permit No.: NCG140000
Certificate of Coverage: Issued
1.0 FACILITY DESCRIPTION
Kerr Concrete -Hickory Plant located at 1126 1" Ave. SW., Hickory, Catawba County, North
Carolina, is a dry batch ready mix concrete plant for commercial supply. The primary
Standard Industrial Classification (SIC Code) for the facility is 3273 (Ready Mixed Concrete).
The approximate location of the facility on a US Geological Survey Map is provided on
Figure 1. The geographic site location can also be given as 350 43' 51.04" North Latitude and
810 21' 31.39" West Longitude. The subject facility is surrounded by wooded areas with light
business and residential on all sides of the site. The details of surrounding properties are
displayed on an Aerial Map, Figure 2, attached with this report. The Hickory Plant is a owned
. by KERR and occupies approximately 4.32 acres of land with the paved area for operations.
However, approximately 0.76 acres of area will be exclusively used for
process/washwater/recycle operations. The stormwater from the facility drains to an unnamed
tributary to Cripple Creek and to Horseford Creek and eventually to Catawba River located
north of the site, Figure 1 _ Based on my review with NC Division of Water Quality web site,
it is our understanding that Clark Creek is classified as Class WS-IV (see attached table
obtained from NC DENR — Division of Water Quality Section web site for details -Attachment
B). The stormwater from the facility is carried to Cripple Creek via an unnamed tributary
(Figure 3). The Hickory Plant will consist of an office building, a ready mix concrete plant
next to the office building, cement and fly -ash silos, a pit system for washwater, and gravel
storage areas, and a concrete truck drum wash area. Hickory Plant will have approximately 2
to 10 trucks and operates 8 hrs/day, 5 days/wk and 30 to 50 wks/year, depending upon the
weather and business conditions.
2.0 FACILITY OPERATIONS
The facility operations will include: a dry batch concrete plant with vacuum system for dust
control system, cement and fly -ash silos with a dust control central vacuum system, sand and a
small portion of gravel storage areas with Iimited water sprinkler system (taken into process
water consideration) and a truck washing area.
CP Engineering and Environmental. Solutions 2 A to C Permit Application
Tel: [phone] Kerr HRM Concrete - Hickory
Email: cmakala(a�,carolina.rr.com 1126ls'Ave. SW..

• Based on the request from the.user, typical operations from this plant include: loading the
sand, gravel, and cement and fly -ash into a weigh scale which drops the dry mix into cement
trucks as a dry batch concrete mix. The dust extracted from the cement silo will be processed
through a NC DENR Division of Air Quality permitted bag filter system before released into
the atmosphere.
The loaded cement truck with concrete mix will be brought to a truck washing area for a
surficial wash before it goes out for the delivery. Occasionally, any left over concrete in the
concrete drum will be either used in making blocks or washed of at the plant in a truck
washing bay. Thus, process water will be generated at the plant for either recycling or
disposal. Based on our understanding of the facility operations, wash chemicals are located
near the wash pit area to collect any potential spills from these storage vessels. The oil storage
tank was kept far from the pits and it is secondary contained. Therefore, no oily water or
stormwater contaminated with chemicals will be released to the environment from the facility.
The facility has a NPDES General Permit (NCG140000) from NC DENR Division of Water
Quality regulation. To meet the NPDES General Stormwater Permit requirements, a
Stormwater Pollution Prevention Plan (SWPP Plan) with Best Management Practices for
potential stormwater pollutant sources shall be prepared and implemented at the site.
All truck drums and drum chutes will be washed at the end of the day before parked for good.
• Therefore, the locations where process washwater will be generated at the plant are:
• Surficial cleaning of the drum before leaving the site,
• Cement drum washing if left over concrete is brought back to the plant; and
• Drum and drum chutes cleaning at the end of the day.
3.0 PROCESS WASHWATER CALCULATIONS
Based on our discussions with the Hickory Plant Manager, it is our understanding that
approximately 25 to 40 batches per day will be completed in the summer time and 25 batches
per day will be completed in the winter time using 10 trucks. Approximately 5 to 10 gals of
water will be used for surficial washing of the truck per batch. Approximately 5 to 10 gals of
water will be used to wash drum chutes per truck per day at the end of the day.
Approximately 200 gals per day per drum will be used to wash at the end of the day.
CP Engineering and Environmental Solutions 2 A to C Permit Application
Tel: [phone] Kerr HRM Concrete - Hickory
Email: cvpakala(a,carolina.rr.com 11261""Ave. SW..

•
Description of Operation
Unit
Total'
# Trucks worst -case)
trucks
10
# Batches per day using 15 trucks
worst -case scenario -summer time)
Batches
40
Surfrcial cleaning
10 gals/batch
400
Chute cleaning at the end of the day
10 gals/truck
100
Drum cleaning at the end of the day
150gals/truck
1,500
Leftover concrete washing from the drum (5 batches)
200 gals/batch
1,000
Total(gals/day)
3,050
4.0 STORMWATER RUNOFF CALCULATIONS FOR A 25 YEAR AND
24-HR RAIN EVENT
According NC DENR-Division of Water Quality NPDES General Stormwater Permit
requirements, recycle systems are considered wastewater treatment per 15A NCAC 2H .0203
and all wastewater discharges must meet a total suspended solids (TSS) limit of 30 mg/l, a
settleable solids (SS) limit of 5 ml/l, and pH between 6-9 SU or must demonstrate that the
. recycle system has sufficient capacity to contain 25-year, 24-hr rainfall event plus one foot of
freeboard under the design operating conditions.
0
To obtain an economic and workable solution to the proposed recycling system design, the
truck washing operations and process washwater generating points are all brought to one
location to reduce the drainage area for 25-yr, 24-hr calculations. Approximately 33,106 sq ft
or 0.76 acres of area including the small area for gravel washing is expected to contribute to
the process washwater from the facility (Figure 3). All washing operations beyond this
designated area are prohibited at the facility and the drivers will be trained to adhere to this
new policy for meeting the Stormwater regulations. CPEES has performed stormwater
calculations for a 25-yr, 24-hr rain event for 0.76 acres and approximately 16,001 cubic feet
(cft) of runoff capacity is required to hold the designed rain event. The runoff volume and
weir design calculations are provided in Attachment A.
Please note, during a rain event, no plant operations will be conducted. Therefore, no
washwater is accounted for in the proposed recycle system design when 25-yr, 24-hr rain
event for stormwater is considered.
CP Engineering and Environmental Solutions 3 A to C Permit Application
Tel: [phone] Kerr HRM Concrete - Hickory
Email: cvpakala(a�carolina.rrxom 11261"Ave. SK

. 5.0 STORMWATER 1 PROCESS WASHWATER RECYCLE SYSTEM
DESIGN AND CONSTRUCTION DETAILS
The proposed recycle system is designed to capture all process washwater and stormwater
from a 25-yr, 24-hr rainfall event from the subject plant wash areas. The recycle system is
designed to hold entire runoff amount from the designed storm event. The approximate
drainage area involved in the process washwater is estimated to be 0.76 acres (Figure 3). The
25 year, 24-hr runoff volume from this drainage area is estimated to be 16,001 cft. A recycle
system designed for the estimated runoff is a five pit system with a drying bed for the waste
materials removed from the pit (Figure 3). The total volume of all the five pits were designed
to be sufficient to hold the entire 25 year, 24-hr run off volume. Please note KERR strives
very hard to control and mitigate migration of any contaminated stormwater from the facility
to the waters of US. Of the design five pit system, four pits were already constructed several
years ago and one pit near the plant was proposed in this A to C permit request. Appropriate
slopes/berms/walls are proposed to isolate the 0.76 acres of drainage area for the washwater /
stormwater recycling operations (Figure 3).
All the five pits in the recycling system are sloped at the entrance in order for a front-end
loader to go into the pit for a periodic cleanup. However, a berm or a slope away from the pit
is placed in front of the second and the third pit in order to divert the wash wastewater entry
into these pits. The cross -sectional and construction details of the pits are shown on Figure 4.
The pit sludge storage area, next to the truck washing operations, was constructed along with
the pit system in order to control stormwater flow that is in contact with the pit sludge. The
slopes of truck washing operations and the pit sludge storage area are directed toward the
first pit of the five pit recycling system in order to control and mitigate migration of
stormwater contamination from the washing operations.
The location of the recycling system along with stormwater flow directions and wash areas are
displayed on Figure 3. The construction details for the recycling system are displayed on
Figure 4. The 25 year, 24-hr stormwater runoff calculations are provided in Table I of this
report.
A sump pump with a level switch will be provided to pump water from the pit 44, as required,
to the plant or to the truck washing operations. This would help empty the pit #4 to
accommodate any possible rain event.
6.0 A to C CONSTRUCTION PERMIT APPLICATION
Based on our consultants' discussions with the State DWQ, it is our understanding that we
need to file a NCG 140000 Notice of Intent (NO[) Form to obtain A to C Permit to construct
the proposed process washwater / stormwater recycle system at the Hickory Plant. A copy of
is the NCG 140000 NOI is attached with the A to C Report for an approval.
CP Engineering and Environmental Solutions 4 A to C Permit Application
Tel: [phone] Kerr HRM Concrete - Hickory
Email: cvpakalar&carolina.rr,com 11261"'Ave. SW..

E
NCG 140000 Permit Application
•

Division of Water Quality / Surface Water Protection
A*A
• NCDENR National Pollutant Discharge Elimination System
.VCfiaIM GNO m LlE r.Er O,
FWRomwr. r Mn PIAM 4. rryoa�-FA
NCG140000
n
LJ
NOTICE OF INTENT
MR AGENCY USEONLY
Date Received
Year
Month
Da
Certificate of Cnvera e
NICIGI 4
Check # Amount
Permit A s.sigmd to
s
National Pollutant Discharge Elimination System application for coverage under General Permit
NCG140000:
STORMWATER AND PROCESS WASTEWATER DISCHARGES associated with activities classified as:
SIC (Standard Industrial Classification) Code - 3273 Ready Mixed Concrete
For new plant sites that will discharge or recycle process wastewater (even if commingled with
stormwater): This NOI is also an APPLICATION FOR Authorization to Construct (ATC) wastewater
treatment facilities. ATC requests must be submitted at least 90 days prior to construction'.
For exisfina plant sites discharging or recycling process wastewater (even if commingled with
stormwater): This NOI is also an APPLICATION FOR Authorization to continue to operate wastewater
treatment facilities in place. Construction, modification, or installation of any new treatment components
at an existing site requires an ATC.
Treatment facilities used to treat or recycle process wastewater (including stormwater RMP structures
treating process wastewater flows commingled with stormwater) require an ATC prior to construction
per 15A NCAC 2H .0138. The authorization to construct or continue to operate will be issued at the
same time as the Certificate of Coverage (COC) for the NCG 14 permit. Design of treatment facilities
must comply with requirements of 15A NCAC 2H .0138 & .0139.
Construction of wastewater treatment facilities (this includes recycle systems) at new or existing plant
sites requires submission of three (3) sets of plans and specifications signed and sealed by a
Professional Engineer (P.E.) or qualified staffz along with this application. A copy of the design
calculations should be included. Please see questions 14 & 15.
�f For questions, please contact the DWO Regional Office for your area. (See page 5)
(Please print or type)
1) Mailing address of owrierloperator (address to which all permit correspondence will be mailed):
Name MR. ROGER KERR, V.P. of SALES AND TREASURER
Street Address 1126 1st. AVE SWIPO BOX 1924
City HICKORY State NC ZIP Code 28602/28603
Telephone No. 828-322-3157 Fax: [phone]
2) Location of facility producing discharge:
Facility Name KERR'S HRM CONCRETE - HICKORY PLANT
Facility Contact MR. ROGER KERR, V.P. of SALES AND TREASURER
Street Address 1126 1 ST AVE. SW.
City HICKORY State NC ZIP Code 28602
County CATAWABA
Telephone No. 828-322-7276 Fax: [phone]
'As per 15A NCAC 2H .0108 Page 1 of 5
2Unless treatment facilities are designed, constructed, and put into operation by employees internal to the company who are qualified to
perform such work for their respective companies in accordance with General Statutes, 89C-25 (7), plans and specifications must be signed
and sealed by a P.E.

NCG140000 N.O.I.
3) Physical location information:
iPlease provide a narrative description of how to get to the facility (use street names state road numbers, and
distance and direction from a roadway intersection). SEE ATTACHED DIRECTIONS
(A copy of a county map or USGS quad sheet with facility clearly located on the map is a required part of this application.)
4) Latitude 35 43' 51.04" Longitude -81 21' 31.39" (deg, min, sec)
5) This NPDES Permit Application applies to which of the following:
❑ New or Proposed Facility Date operation is to begin
® Existing
6) Standard Industrial Classification:
Provide the 4 digit Standard Industrial Classification Code (SIC Code) that describes the primary industrial
activity at this facility
SIC Code: 3 2 7 3
7) Provide a brief description of the types of industrial activities and products produced at this facility:
(Include a site diagram showing the process areas present at this facility.)
DRY CONCRETE OPERATIONS. PLANT PRODUCES CONCRETE —FOR COMMERCIAL U$E _
8) Discharge points / Receiving waters:
How many discharge points (ditches, pipes, channels, etc.) convey stormwater and/or wastewater from the
property? ONE (OUTFALL-001)
What is the name of the body or bodies of water (creek, stream, river, lake, etc.) that the facility stormwater
and/or wastewater discharges end up in? UNNAMED TRIBUTARY TO CLARK CREEK AND EVENTUALLY TO CATAWBA RIVER (SEE FIGURE f)
If the site stormwater discharges to a separate storm sewer system, name the operator of the separate storm
sewer system (e.g. City of Raleigh municipal storm sewer). N/A
Receiving water classification (if known): CLASS WS-1V (SEE ATTACHED SHEETS)
Note: Discharge of process wastewater to receiving waters classified as WS-II to WS-V or SA must
be approved by the N.C. Dept. of Environmental Health. If DEH does not approve, coverage
under NCG140000 cannot be granted. No new discharges of process wastewater are
permitted in receiving waters classified as WS-I or freshwater ORW.
9) Does this facility have any other NPDES permits?
21 No
❑ Yes
If yes, list the permit numbers for all current NPDES permits for this facility:
10) Does this facility have any Non -Discharge permits (ex: recycle permits)?
0 No
❑ Yes
If yes, list the permit numbers for all current Non -Discharge permits for this facility:
11) Does this facility employ any best management practices for stormwater control?
❑ No
0 Yes
If yes, please briefly describe: SECONDARY CONTAINMENT FOR OILSICHEMICAL STORAGE, BERMS
AROUND THE STONE AND SAND STORAGE AREAS, PLANS TO RECYCLE WASHWATER

NCG140000 N.O.I.
12) Does this facility have a Stormwater Pollution Prevention Plan?
• 0 No
❑ Yes
If yes, when was it implemented?
•
13) Are vehicle maintenance activities occurring or planned at this facility?
0 No
❑ Yes
Wastewater Treatment Design Information
14) Are discharges occurring or planned from any of the following process wastewater generating activities?
Vehicle and equipment cleaning 0 Yes ❑ No
Wetting of raw material stockpiles 0 Yes ❑ No
Mixing drum cleaning 0 Yes ❑ No
If yes to any of the above, please describe the type of process used to treat and/or recycle the process
wastewater.
For a sufficient application, you must provide design specifics (e.g., design volume, retention time, surface
area, etc.) and calculations to demonstrate compliance with permit effluent limits (pH — 6-9 SU, Total
Suspended Solids (TSS) — 30 mg1l, and Settleable Solids (SS) — 5 ml/l.) [Use separate sheet(s)].
If all these discharges are recycled, please refer to Question 15.
For plants that recycle and/or discharge process wastewater:
When applying for this permit, you are also applying for an authorization to construct (new
treatment facilities) or authorization to continue to operate (existing treatment facilities) as
part of the NOL For new sites, you must submit three (3) sets of design plans and
specifications with this application and provide supporting calculations that predict
compliance of final discharge with permit limits. For existing sites, applicants should submit
three (3) sets of plans and specs for facilities as -built and provide as many design details as
possible, or submit a detailed diagram of treatment systems in place that includes information
such as tank volumes, dimensions, retention time, piping, settling basin details, etc.
Please note: if new treatment systems are Planned for an existing site, an ATC will be required
prior to construction of those facilities. Plans/specs1calculations prepared by a P.E. and the
request for an ATC may be submitted with this NOI, or separately at a later date. DWO may
request the status of your plans for requesting an ATC upon issuance of the COC.
15) Does the facility use or plan to use a recycle system?
❑ No
0 Yes
If yes, what size storm event is the system designed to gold before overflowing? (for example, 10-yr, 24-hr)
25 year, 24-hr rainfall event
For a recycle system (regardless of when it overflows), please provide plans, calculations, and design
specifics (e.g., throughput assumptions/water balance, design volume, retention time, surface area, amount of
freeboard in design storm event, etc.). [Use separate sheet(s)].
,-� For a sufficient application, the information must demonstrate compliance of final discharge with permit
0 � effluent limits (pH — 6-9 SU, Total Suspended Solids (TSS) — 30 mg/l, and Settleable Solids (SS) — 5 mill), or
must demonstrate that the recycle system has sufficient capacity to contain runoff from a 25-year, 24-hr
rainfall event plus one foot of freeboard under design operating conditions.

NCG140000 N.O.I.
16) Are wastewater treatment facilities (including recycle systems) planned in the 100-year flood plain?
• 0 No ❑ Yes If so, include information to demonstrate protection from flooding. (Minimum design
requirements for treatment works include protection from the 100-year flood, per 15A NCAC 2H .0219.)
1]
17) Hazardous Waste:
a) Is this facility a Hazardous Waste Treatment, Storage, or Disposal Facility?
® No
❑ Yes
b) Is this facility a Small Quantity Generator (less than 1000 kg. of hazardous waste generated per month) of
hazardous waste?
® No
❑ Yes
c) Is this facility a Large Quantity Generator (1000 kg. or more of hazardous waste generated per month) of
hazardous waste?
® No
Cl Yes
d) If you answered yes to questions b. or c., please provide the following information:
Type(s) of waste:
How is material stored: _
Where is material stored:
How many disposal shipments per year:
Name of transport / disposal vendor:
Vendor address:
18) Certification:
North Carolina General Statute 143-215.6 B(i) provides that:
Any person who knowingly makes any false statement, representation, or certification in any applications, record, report, plan, or other
document filed or required to be maintained under this Article or a rule implementing this Article; or who knowingly makes a false
statement of a material fact in a rulemaking proceeding or contested case under this Article; or who falsifies, tampers with, or knowingly
renders inaccurate any recording or monitoring device or method required to be operated or maintained under this Article or rules of the
[Environmental Management) Commission implementing this Article shall be guilty of a Class 2 misdemeanor which may include a fine
not to exceed ten thousand dollars ($10,000).
I hereby request coverage under the referenced General Permit. I understand that coverage under this permit
will constitute the permit requirements for the discharge(s) and is enforceable in the same manner as an
individual permit.
I certify that I am familiar with the information contained in this application and that to the best of my
knowledge and belief such information is true, complete, and accurate.
Printed Name of Person Signing: MR. ROGER KERR
Title: V-P, of SALES AND TREASURER
of
( ate Signed)
Notice of Intent must be accompanied by a check or money order for $100.00 made payable to:
NCDENR

NCG140000 N.O.I.
Final Checklist
This application will be returned as incomplete unless all of the following items have been included:
0 Check for $100 made payable to NCDENR.
0 This completed application and all supporting documentation (including design details and calculations for
treatment systems).
❑ If an Erosion & Sedimentation Control (E&SC) Plan is required from Division of Land Resources (DLR)
or local designee: documentation verifying applicant has developed and submitted that Plan to the governing
agency (required per 15A NCAC 02H .0138). NOT REQUIRED
`~ m For new sites (or sites that will install new treatment facilities): Three (3) copies of plans and
specifications for wastewater treatment facilities (including recycle systems), signed and sealed by a
Professional Engineer or qualified staff meeting requirements of G.S. 89C-25 (7). SEE ATTACHED
'- ❑ For existing sites: three (3) copies of plans and specifications for wastewater treatment facilities (including
recycle systems) as built, stamped and sealed by a Professional Engineer, or (only if plans not available) a
detailed diagram of treatment systems in place that includes information such as tank volumes, dimensions,
retention time, piping, settling basin details, etc. NIA
® A site map showing, at a minimum, (existing or proposed):
(a) outline of drainage areas, (b) stormwater/wastewater treatment structures, (c) location of
stormwater/wastewater outfails (corresponding to which drainage areas), (d) runoff conveyance structures,
(e) areas where materials are stored, (f) impervious areas, and (g) site property lines.
A county map or USGS quad sheet with location of facility clearly marked.
NMI -the entire ppacKa:Wto )
LSt6_rmWater Permitting Unit;
Pivision of'Water Quality)
(1_617 M0 Service -Cent
Raleigh; Nortli Carolina-27699-16
Note
The submission of this document does not guarantee the issuance of an NPDES permit.
For questions, please contact the DWQ Regional Office for your area.
DWQ Regional Office Contact Information:
Asheville Office ......
[phone]
Fayetteville Office ...
[phone]
Mooresville Office ...
[phone]
Raleigh Office ........
(91 9) 791-4200
Washington Office ...(252)
946-6481
Wilmington Office ...
[phone]
Winston-Salem ......
[phone]
Central Office .........[phone]
0

Directions to 1126 1st Ave SW, Hickory, NC 28602
179 mi — about 2 hours 55 mins
Google maps
•
Save trees. Go greens
Download Google Maps on your
phone at google.comlgmm b
1 Raleigh, NC
1. Head east on E South St toward S Wilmington St go 0.1 mi
total0.1 mi
2. Turn right at the 1st cross street onto S Blount St
About 2 mins
3. Continue onto Hammond Rd
4. Merge onto 1-40 WIUS-64 W via the ramp to 1-440
Continue to follow 1-40 W
About 2 hours 47 mins
21 5. Take exit 123E to merge onto US-321 N toward N Carolina 127 N1Hickory/Lenoir/US-70
About 2 mins
6. Turn right at 13th St SW
�rr1 7. Take the 1st right onto 2nd Ave SW
About 1 min
41 8. Take the 3rd left onto 11th St SW
Take the 1 st left onto 1st Ave SW
Destination will be on the right
fao 1126 1st Ave SW, Hickory, NC 28602
go 0.6 mi
total 0.7 mi
go 0.4 mi
total 1.1 mi
go 175 mi
total 176 mi
go 1.8 mi
total 178 mi
go o.1 mi
total 178 mi
go 0.2 mi
total 178 mi
go 390 ft
total 178 mi
go 289 ft
total 179 mi
These directions are for planning purposes only. You may find that construction projects, traffic, weather, or other events may cause conditions to differ from the map results, and you
should plan your route accordingly. You must obey all signs or notices regarding your route.
Map data 02011 Google
Directions weren't right? Please find your route on maps.google.00m and click "Report aproblem" at the bottom left.
11

TABLES
• Table 1: Runoff Volume Calculations for a 25 yr, 24-hr Storm Event
0

0
TABLE I
KERR CONCRETE
HICKORY - NORTII CAROLIM
Size of a Concrete Recycling System for Process Washwaterl Stormwater for a Ready Mix Concrete Plant
Size for a 25 yr, 24-hr Runoff Volume =
Use SCS Peak Discharge
Drainage Area •
0.76 acres or 33,106 sq ft.
Elevation •
3 ft (Obtained ftom the mile lapo map)
Length •
242 ft (Obtained fiom the site lope map)
To.
5 an (8.03a)
Slope •
5.0%
CN
99
Rainfall a
5,25 inches (Ref Fig 8.03k)
Rainfall Intensity (Average Asheville and Chatlate) •
6.75 infM (8.03f and 8.03g)
Runoff Depth •
5 8 inches (Table 8 03c)
Runoff Volume •
Drainage Area x Rureff Depth
15.001 cu ft.
Design Recycle pits to hold =
16,001 cu fL A minknum of 4 pits s Ith a bunar of 1 additional pit for emergencies
QA
C6 = 4.783 Peak rate of runoff in ctblc feet per second
1
Om - 25 Yr, 24-hr Discharge =
c = 0_9 Runoff Coefficient
i = 7 Average intensity of Rainfall in SrhesRr for a storm AraliorFtima of concertration
A = 0.76 Drainage area
(Size for Weir for On =
Length of the weir =
Number of Pits
Capacity of pits
Existing PR 1 (Flat Area Volume)
Existing Pit 1 (Slope Area Volume)
Existing Pit 2 (Flat Area Volume)
Existlg Pit 2 (Slope Area Volume)
Existing PUS 3 d 4 (Flag Atea Vulame)
Existing Pits 3 & 4 (Slope Area Volane)
New Pit 5 (Flat Area Volume)
Pit 5 (Slope Area Volume(
Total Pit Volume (CFT) =
Chalam Palmla, PE
CP Engmee ing
Tel: [phone]
CPEES Prgact No 1134-001
3.0LH
Ozs = 4.7a8
L = 3 Length of the weir (ft)
H = 1.5 Height of the weir (ft) Assume 0-5 fl
4.788=30 x Lx(05)
1 ft
6
L =
40
ft
W •
12
ft
AREAIpI a
7,400 cubic feet.
D.
5
ft
L =
76
ft
W =
17
h
AREAfpit •
600 cubic fed.
o=
5
ft
L =
40
ft
W =
12
ft
AR" a
2,880 cubic feet.
0=
6
ft
L =
20
ft
W=
12
ft
AREAfAA=
720 obit feel.
D=
6
ft
L =
40
ft
W c
12
ft
AREAfpft •
3,840 cubic feet.
D =
8
ft
7,8811 cubic feet tote!
L =
20
ft
W =
12
ft
AREAlpit a
960 cubic feet.
D =
e
ft
1.920 cubic feet total
L-
18
ft
W =
12
ft
AREAfptt a
360 cubic feet,
D=
3
ft
L= 15 ft
W = 12 ft AREA" = 270 cubic feet.
0= 3 ft
16,830 cubic feet
> 16,001 cubiefeet

•
ri%AYRGqv
Figure 1: Site Location Map
Figure 2: Aerial View of Surrounding Properties around the
Hickory Plant
Figure 3: Site Layout Map with Buildings, Dry Mix Concrete
Plant, and Proposed Process Washwater /
Stormwater Recycle System
Figure 4: Process Washwater and Stormwater Recycle System
Construction Details
19

•
0
Map Name: HICKORY Map Center 035' 43' 51.16" N 081' 21' 31 08" W
Print Date: 02/09/11 Horizontal Datum: NAD27
is
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O
- `
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tq c
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oqA
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AVE
t_
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in
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i -
c L I,
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CSORYI n
RP UP1'
�I
y
I
• , .
�t
�
- Sp
Declination
t•
'
t
,
Chi
Z
CD
C 200
r
o
GN 0.21' W
MN 8.99° W
081 ° 22'
0.00" W 081 ° 21'
0 00" W 081- 21'
0 00" V11 081- 20'
30 00" W
SCALE 1:24000 SITE LOCATION MAP
KERR HRM CONCRETE - HICKORY PLANT
° 1000 201W FIGURE 1 JOB NO, 1134-001
YARDS

Gnfvirxl
4
e� •` rciJnllrq r{�a r s T prNW
{ Ibf r
1•; ,i: �' F _ .� �..-+r f �. }; j� � il�cli fl'�Y E' �t rs'fy - ,.�r.r,..
� t 3w ,r, r hldtlatnal Tr;cr
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mat.. AyWDr,KW
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s g 'ice
St��, b r arSYH t
eA»'ie+Y,lJnite4 I;iedrs►iIrv?
momfA
2nd Ave
A,.lo A ira' , ''Ciinrsead rn
Ave
$ H �ndA e.CF S1N
'7tlr� W
;3rdAue SWM.
�• 3rd Av? c n ,
k +fE.
cx
`` . ` s' +sue •Y i . �: _ ;c �

•
0

0
ATTACHMENTS
Attachment A: Runoff Volume and Weir Design Calculations
with Backup
Attachment B: NC DENR — Division of Water Quality Stream
Classification Table for Catawba County

• Runoff Volume and Weir Design Calculations with Backup
0

•
•
0
TABLE 1
KERR CONCRE'I'E
HICKORY-,NOR"CII CAROLINA
`Size of a Concrete Recyclindgystem for Process Wesh'water! Stormwater fora Ready Miz Concrete Plant '< f;,,t
v
Size for a 25 yr, 24-hr Runoff Volume =
Use SCS Peak Discharge
Draan•a• Area =
0 76 eves Cr 33.108 so R.
Ehvatina =
311 (Obtained from the site topo rmp)
Length =
242 I (Obtained from the site topo map)
To-
5 min (8.C3a)
Slops a
5.0%
CN
98
.Rainfall -
5.25 inches (Ref Fig 8,03k)
�Rainfall Intensity (Average Ash.vlg. end Charlotte) =
6.75 iNFx (8.03f and 8-03g1
(Runoff Depth -
5.8 inches (Table 8.03c)
Rrmaff Vok— a
Drainage Area x Runoff Depth
16.001 cut.
Design Recycle pits to hold
16,001 cu ft. A minim", of a pits with a (wnar of 1 aedttional phi for emergencies
CiA
C6e 4.788 Peak rate of Woolf in able feet per second
Q2y - 25 Yr, 24-hr Discharge =
C = 0,9 Runoff Coefigerrl
I = 7 Average intensity of Rainfall in inrhesRe for a storm d ation-Lme of concentration
A = 0.76 Drainage area
ISlze for Weir for 0, =
Length of the weir =
Number of Pits
Capacity of pits
Existing PR 1 IFlat Area Volumel
Existing PR 1 (Slope Area Valume)
Existing PI 2 (Flat Area Vokme)
Exlstblg PI 2 (Slope Area Vohmel
Existing Pits 3 & 4 (Fiat Area Volume)
Existing Pits 3 S 4 (Slope Area Vohmte)
New PI 5 (Flat Area Volume)
PH 5 (Slope Area Yolriv e)
Total Pit Volume {CFTJ =
Chalam Pakala, PE
CP Engineering
Tel: [phone]
CPEES Project No. 1134-001
3.0 L H
Qn = 4,788
L= 3 Length of the welr(8)
H = 1.5 Height of the weir (8) Asswne 0.5 8
4.788 =30t Lx(0.5)y`
1 it
5
L a 40 It
W . 12 it AREAlpit - 2,400 cubic feet
0• 5 ft
L . 20 it
W . 12 ft AR6" - 600 ctbtc feet
0. 5 R
L . 40 ft
W. 12 ft AREA" ZOO cubic feet
0• 6 R
L . 20 ft
W . 12 ft AREAfpt = 720 cubic Teat
D. 6 ft
L . 40 ft
W . 12 ft AREA * = 3,840 cubic feet.
0. 11 ft 7,680 Chic fed total
L . 20 it
W . 12 R AREAIpil = 960 cubic feet.
D . a it 1,920 Cubic feet total
La 10 it
W . 12 A AREAVpll = 360 CUNC feet
-
D • 3 it
L . 15 11
W . 17 It ARFJVO = 270 Cubic feet
-
D= 3 ft
16,830 cubic test
> 16,DO1 cuoicfeet

u
• Table 8.03a
Value of Runoff Coefficient
(C) for Rational Formula
0
Land Use
C
Land Use
C
Business:
Lawns:
Downtown areas
0.70-0.95
Sandy soil, flat, 2%
0.05-0.10
Neighborhood areas
0.50-0.70
Sandy soil, ave.. 2-7%
0.10-0.15
Sandy soil, steep, 711/o
0.15-0.20
Residential:
Heavy soil, flat, 2%
0.13-0.17
Single-family areas
0.30-0.50
Heavy soil, ave.. 2-7%
0.18-0.22
Multi units, detached
0.40-0.60
Heavy soil, steep, 7%
0.25-0.35
Multi units, attached
0.60-0.75
Suburban
0.25-0.40
Agricultural land:
Bare packed soil
Industrial:
Smooth
0.30-0.60
Light areas
0,50-0.80
Rough
0.20-0.50
Heavy areas
0,60-0.90
Cultivated rows
Heavy soil no crop
0.30-0.60
Parks, cemeteries
0.10-0.25
Heavy soil with crop
0.20-0.50
Sandy soil no crop
0.20-0,40
Playgrounds
0.20-0.35
Sandy soil with crop
0.10-0.25
Pasture
Railroad yard areas
0.20-0.40
Heavy soil
o.15-o.45
Sandy soil
0.05-0.25
Unimproved areas
0.10-0.30
Woodlands
0.05-0.25
Streets:
Asphalt
0.70-0.95
Concrete
0.80-0.95
Brick
0.70-0.85
Drives and walks
0.75-0.85
Roofs
0,75-0.85
NOTE: The designer must use judgment to select the appropriate C value
within the range for the appropriate
land use. Generally, larger
areas with
permeable soils, flat slopes,
and dense vegetation should have lowest C
values. Smaller areas with slowly permeable soils, steep slopes,
and
sparse vegetation should
be assigned highest C values.
Source: American Society of Civil Engineers
The overland flow portion of flow time may be determined from Figure 8.03a.
The flow time (in minutes) in the channel can be estimated by calculating the
average velocity in feet per minute and dividing the length (in feet) by the
average velocity.
Step 4. Determine the rainfall intensity, frequency, and duration (Figures 8.03b
through 8.03g--source: North Carolina State Highway Commission; Jan.
1973). Select the chart for the locality closest to your location. Enter the
"duration" axis of the chart with the calculated time of concentration, Tp. Move
vertically until you intersect the curve of the appropriate design storm, then
move horizontally to read the rainfall intensity factor, i, in inches per hour.
Step 5. Determine peak discharge, Q (fO/sec), by multiplying the, previously
determined factors using the rational formula (Sample Problem 8.03a).
8.03.2

U
w
0
0
0
0
M
c
O
a
m
0
E
in
0
E
0
CD
H (ft)
rnn
m
5
cC
0
rn
c
m
E
M
E
Note:
Use nomograph Tc for natural basins with well-defined channels, for overland
flow on bare earth, and for mowed -grass roadside channels.
For overland flow, grassed surfaces, multiply Tc by 2.
For overland flow, concrete or asphalt surfaces, multiply Tc by 0.4.
For concrete channels, multiply Tc by 4.2.
Figure 8.03a Time of concentration of small drainage basins.
Tc(rnin)
200
1.00
50
10
5
1
W
R.03.4

Appendices
40
,9
20
15
10
8
m 6
0
L
t`n 4
L
U
C
2
.N
0.8
c
0.6
cc 0.4
0.2
0.1 L
5
hevi
'AQr7~
s
10 20 40 60 2 3 4 6 8 i2 18 24
Minutes Hours
Figure 8.03f Rainfall intensity duration curves —Asheville.
20
15
10
8
6
0
y
4
m
U
C
2
.N
S 0.6
rc 0.6
c
0.4
r "
D.I
5 10 20
Minutes
Figure 8.03g Rainfall intensity duration curves ---Charlotte.
Duration
40 60 2 3 4 6 8 12 18 24
Hours
Duration

Table 8.03b
Runoff Curve Numbers (CN)
K
Hydrologic Soil Group
A R c n
Land Use/Cover
Cultivated land
without conservation
72
81
with conservation
62
71
Pasture land
poor condition
68
79
fair condition
49
69
good condition
39
61
Meadow
good condition
30
58
Wood or forest land
Thin stand - poor cover, no mulch
45
66
Good stand - good cover
25
55
Open spaces, lawns, parks, golf courses, cemeteries, etc.
good condition:
grass cover on 75%
or more of the area
39
61
fair condition:
grass cover on 50
to 75% of the area
49
69
Commercial and business
areas (85% impervious)
89
92
Industrial districts
(72% Impervious)
81
88
Residential:' Development completed and vegetation established
Average lot size Average % Impervious
1 /8 acre or less 65
77
85
1/4 acre 38
61
75
1 /3 acre 30
57
72
112 acre 25
54
70
1 acre 20
51
68
2 acre 15
47
66
Paved parking lots, roofs,
driveways, etc.
98
98
Streets and roads
paved with curbs and
storm sewers
98
98
gravel
76
85
dirt
72
82
Newly graded area
81
89
Resfdential: Development underway and no vegetation
Lot sizes of 114 acre
88
93
Lot sizes of 1/2 acre
85
91
Lot sizes of 1 acre
82
90
Lot sizes of 2 acres
81
89
Be 91
78 8�
5 .
86 89
79 84
74 80
71 78
77 83
70 77
74 80
79 84-
94 95
91 93
90 92
83 87
81 86
80 85
79 84
77 81
98 98
98 98
89 91
87 89
93 95
95 97
94 96
93 95
92 94
'Curve numbers are computed assuming the runoff from the house and driveway is directed toward the street.
source: USDA-SC5
8.03.10 Rev. I ➢3

25-year i day precipitation (inches)
Sole In Miles
0 Z5 50 75 100
RAINFALL DATA MAP
6
5 5.5 6 5.5 6 6.5
L
aye (l T 1I 1 I 1�a.Trt
5 ' ^,� �•\ ee (I STONES IaOCKINGNa sw[LLIF Ni = iw.n.In . )
�_`._..1. xIr„F 1
1 w.LPEs -..1r � �e r• •r �..�
r'fANRLI I •�• flPfl[
1�C+Low[LL' �j� •� WYI stir ' i�• `' Nash �.
, oa[c0eet� 4 A
EL
RVNR r SON• rxp04►N CWTNIY MA / W11 SON •���
N+ e� PEA N` tt+wn c. MR.
.-M 1� eow.N II /•�
SWIIx � / f.e trr `I /JONNSIaw / •�\ �' R[.VrOnTr
\.r^.)•�J1 �
HC •• MrM m W `1�48 STaN Y��Sr
l
a. e �E _. Q `L[NOIa /IN._ .
g ` 7 6 ` h ` I te1CNY /NoRC f� 1 y�Y +oNLS\"
7 VMiaM 1 PMSON `
CARTER[1
[J
1 ` - a•R[ 8
f'
8.5
6.5
VIA 8.5
.r.. 7
\coluYaui v W OG
1 r
7 ff--O SwrCR
8 Q►1
I

Appendices
Table 8.03c
Runoff Depth
b. Determine runoff depth (in inches) from the curve number and rainfall
depth using Table 8.03c.
Rainfall
Curve Number (CN)I
(Inches)
60
65
70
75
80
85
90
95
1.0
0.00
0.00
0.00
0.03
0.08
0.17
0.32
0.56
1.2
0.00
0.00
0.03
0.07
0.15
0.28
0.46
0.74
1.4
0.00
0.02
0.06
0.13
0.24
0.39
0.61
0.92
1.6
0.01
0.05
0.11
0.20
0.34
0.52
0.76
1.11
1.8
0.03
0.09
0.17
0.29
0.44
0.65
0.93
1.30
2.0
0.06
0.14
0.24
0.38
0.56
0.80
1.09
1.48
2.5
0.17
0.30
0.46
0.65
0.89
1.18
1.53
1.97
3.0
0.33
0.51
0.72
0.96
1.25
1.59
1.98
2.44
4.0
0.76
1.03
1.33
1.67
2.04
2.46
2.92
3.42
5.0
1.30
1.65
2.04
2.45
2.89
3.37
3.88
4.41
6.0
1.92
2.35
2.80
3.28
3.78
4.31
4.85
5.40
7.0
2.60
3.10
3.62
4.15
4.69
5.26
5.82
6.40
8.0
3.33
3.90
4.47
5.04
5.62
6.22
6.81
7.39
9.0
4.10
4.72
5.34
5.95
6.57
7.19
7.79
8.39
10.0
4.90
5.57
6.23
6.88
7.52
8.16
8.78
9.39
11.0
5.72
6.44
7.13
7.82
8.48
9.14
9.77
10.39
12.0
6.56
7.32
8.05
8.76
9.45
10.12
10.76
11.39
t To obtain runoff depths
for CN's and other
rainfall amounts not shown
in this table. use an arithmetic interpolation.
The volume of runoff from the site can be calculated by multiplying the
area of the site by the runoff depth.
Ste} 4. Determine the peak rate of runoff for the design storm by adjusting for
watershed shape as follows:
a. Determine an "equivalent drainage area" from the hydraulic length of the
watershed using Figure 8.03n. Hydraulic Iength is the length of the flow
path from the most remote point in the watershed to the point of discharge.
b. Determine the discharge (c€s/inch of runoff) for the equivalent drainage
area from Figure 8.03o through 8.03q:
Figure 8.03o - for average watershed slopes 0-3%
Figure 8.03p - for average watershed slopes 3-7%
Figure 8.03q - for average watershed slopes 8-50%
Calculate the peak discharge, Q1, of the equivalent watershed by multi-
plying equivalent watershed area by runoff from Table 8.03c in Step 3b.
s
11
8.03.17

Attachment B
NC DENR -- Division of Water Quality Stream Classification Table for
Catawba County

NC DENR - DIVISON OF WATER
QUALITY
2B . 0300
.0308 CATAWBA RIVER
BASIN
Class
came of Stream
Description
Class
Date
Index No.
Cripple Creeks
FFrom source to_ Horsefor&
WS IV1
@OB03 //92
(1i-54-2
Creeks
Horseford Creek
From a point 0.7 mile
WS-IV;CA
08/03/92
11-54-(3)
upstream of mouth to Lake
Hickory, Catawba River
Gunpowder Creek
From source to a point 0.5
C
09/01/74
11-55-(0.5)
mile downstream of
Caldwell County SR 1127
Angley Creek
From source to Gunpowder
C
09/01/74
11-55-1
Creek
Brushy Fork
From source to Angley Creek
C
09/01/74
11-55-1-1
Gunpowder Creek (Old Mill
From a point 0.5 mile
WS-IV
OB/03/92
11-55-(1.5)
Pond)
downstream of Caldwell
County SR 1127 to a point
0.8 mile downstream of
Billy Branch
Little Gunpowder Creek
From source to U.S. Hwy.
C
03/01/62
11-55-2-(1)
321-A
Little Gunpowder Creek
From U.S. Hwy. 321-A to
WS-IV
08/03/92
Gunpowder Cr.
Silly Branch
From source to Old Mill
WS-Iv
08/03/92
11-55-3
.
Pond, Gunpowder Creek
Gunpowder Creek
From a point 0.8 mile
wS-IV;CA
08/03/92
11-55-(4)
downstream of Billy Branch
to Lake Hickory, Catawba
River
Silver Creek
From source to a point 0.7
WS-Iv
08/03/92
11-56-(1)
mile upstream of mouth
Silver Creek
From a point 0.7 mile
WS-IV;CA
08/03/92
11-56-(2)
upstream of mouth to Lake
Hickory, Catawba River
Mill Creek
From source to a point 0.6
WS-IV
08/03/92
11-57-(1)
mile upstream of mouth
Mill Creek
From a point 0.6 mile
WS-IV;CA
08/03/92
11-57-(2)
upstream of mouth to Lake
Hickory, Catawba River
Upper Little River (Cedar
From source to Morris Creek
C
03/01/62
11-58
Creek)
Millers Creek
From source to Upper Little
C
03/01/62
11-58-1
River
McRary Creek
From source to Upper Little
C
03/01/62
11-58-2
River
Mountain Run
From source to Upper Little
C
03/01/62
11-58-3
River
Dilot Branch
From source to Upper Little
C
03/01/62
11-58-4
River
Page 19 of 40 2011-02-05 07:18:53

3
ocuments
documents is
nth Carolina
rr, designer -
Inspect during construction; certify conformity with the
plans and specs; and certify compliance wish the
stormwater rules. (15A NCAC 2H ,1008 (j) )
Permit # )i%%`to`t 15
by — raC D,viston ofW31 C alit,