NCG140456_COMPLETE FILE - HISTORICAL_20171026

STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO.
DOC TYPE O. HISTORICAL FILE
MONITORING REPORTS
DOC DATE � o h / -7 ) a a G.
YYYY M M D D

Permit Number NCG140456
Central Files: APS _ SWP _
10/25/2017
Permit Tracking Slip
Program Category
Status Project Type.
NPDES SW
In review New Project
Permit Type
Version Permit Classification
Ready Mix Concrete StormwaterNVastewater Discharge COC
COC
Primary Reviewer
Permit Contact Affiliation
rick.riddle
Coastal SWRuIe
RECEIVED
O C T 2 6 2017
Permitted Flow
CENTRAL FILES
Facility
OWR SECTION
Facility Name
MajorlMinor
Region
Capital Ready Mix Concrete, LLC - Turkey Creek
Minor
Raleigh
Location Address
County
270 Moncure Pittsboro Rd
Chatham
Facility Contact Affiliation
Moncure NC 27559
James Lochren
512 Three Sisters Rd
Owner
Knightdale
NC 27545
Owner Name
Owner Type
Capital Ready Mix Concrete LLC
Non -Government
Owner Affiliation
James Lochren
512 Three Sisters Rd
Dates/Events
Knightdale
NC 27545
Scheduled
Orig Issue App Received Draft Initiated Issuance
Public Notice
Issue Effective Expiration
8/28/2017
Regulated Activities
Requested /Received Events
Concrete products manufacture
RO staff report received
9128117
RO staff report requested
9122/17
Outfall 001
Waterbody Name
Streamindex Number
Current Class
Subbasin
Turkey Creek
16-38-4
WS-IV;NSW
03-06-04
Outfall 002
Waterbody Name
Streamindex Number
Current Class
Subbasin
Turkey Creek
16-38-4
WS-IV;NSW
03-06-04
Outfall 003
Waterbody Name
Streamindex Number
Current Class
Subbasin
Turkey Creek
16-38-4
WS-IV;NSW
03-06-04

Central Fifes: APS _ SWP
10/25/2017
Outfall 004
Waterbody Name Streamindex Number Current Class Subbasin
Turkey Creek 16-38-4 WS-IV;NSW 03-06-04

Energy, Mineral &
Land Resources
ENVIRONM ENTAL QUALITY
James Lochren
Capital Ready Mix — Turkey Creek LLC
512 Three Sisters Road
Knightdale, NC 27545
Dear Mr. Lochren:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
TRACY DAVIS
RECEIVED Director
October 26, 2017
CENTRAL FILES
DWR SECTION
Subject: General Permit No. NCG 140000
Capital Ready Mix
Turkey Creek LLC
COC NCG140456
Chatham County
In accordance with your application for a discharge permit received on August 28, 2017, 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 October 15, 2007 (or as subsequently amended).
Please take notice that this certificate of coverage (COC) is not transferable except after notice to the
Division of Energy, Mineral, and Land Resources. The Division may require modification or revocation
and reissuance of the certificate of coverage.
Please note that NCG 140000 contains effluent limitations for process wastewater discharges (see Part IV,
Section D). Wastewater discharges must meet the requirements of these effluent limitations. An
exceedance of any of these limitations is a violation of permit conditions.
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Energy, Mining, and Land Resources, or permits required by the Division of Water
Resources, Coastal Area Management Act, or any other federal or local governmental permit that may be
required.
If you have any questions concerning this permit, please contact Richard Riddle at telephone number
[phone].
Sincerely,
v"L
or Tracy E. Davis, P.E., CPM
cc: Raleigh Regional Office
Central Files
Stormwater Permitting Program Files
Nothing Cornpares--�, ,
SState of North Carolina I Environmental Quality I Energy, Mineral and Land Resources
512 N. Salisbury Street ! 1612 Mail Service Center I Raleigh, North Carolina 27699-1612
919 707 9200

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL, AND LAND RESOURCES
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE No. NCG140456
STORMWATER and 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,
Capital Ready Mix Concrete
is hereby authorized to discharge stormwater and process wastewater from a facility located at
Capital Ready Mix Concrete -Turkey Creek LLC
270 Moncure Pittsboro Rd
Pittsboro
Chatham County
to receiving waters designated as Turkey Creek, a class WS-IV, NSW water in the Cape Fear
River Basin, in accordance with the effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, II, III, IV, and V of General Permit No. NCG140000 as attached.
This certificate of coverage shall become effective October 26, 2017.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day October 26, 2017.
for Trac�E. Davis, P.E., Director /,"--
Division of Energy, Mineral, and Land Resources
By the Authority of the Environmental Management Commission

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O o • ' Capital Ready Mix Concrete
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NCG 14045C
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Map Scale 1:24, 000
Capital Ready Mix Concrete
Turkey Creek LLC
Latitude: 350 42' 11" N
Longitude: -790 10' 35" W
County: Chatham
Receiving Stream: Turkey Creek
Stream Class: WS-N, NSW
Index Number: 16-38-4 (Cape Fear Basin)
Facility Location

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Division of Energy, Mineral and Land Resources
Land Quality Section
National Pollutant Discharge Elimination System
FOR AGENCY USE ONLY
Date Received
Y.
N1on[h
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Certificate ofCovera ge
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NCG 140000
NOTICE OF INTENT M v
National Pollutant Discharge Elimination System application for coverage under General Permittm
NCG140000:
STORMWATER AND PROCESS WASTEWATER DISCHARGES associated with activities classifies as:
G)
SIC (Standard Industrial Classification) Code: 3273 and like activities - Ready Mixed Concrete
This NOI may be an application to discharge process wastewater. NCG140000 contains effluent limitations for
process wastewater discharges. Wastewater discharges must meet the requirements of these effluent
limitations. An exceedence of any of these limitations will result in a violation of the permit conditions.
For questions, please contact the DEMLR Central Office or Regional Office in your area. (See page 6)
(Please print or type)
1) Mailing address of ownerloperator (official address to which all permit correspondence will be
mailed): (Please print or type all entries in this application form.)
Legal Owner Name James Lochren
(Please attach the most recent Annual Report to the NC Secretary of State showing the current legal name. Alternatively this
permit can be given to an individual)
Signee's Name (as signed for in question 29 below)
Street Address 512 Three Sisters Road
City Knightdale
Telephone No. 919 999-0345
Alternate Contact Name Sara Lochren
Alternate Contact Telephone (if different)
2) Location of facility producing discharge:
Facility Name
Facility Contact
Street Address
70
rn
0
rn
rn
0
State NC ZIP Code 27545
Email [e-mail]
Email (if different) sara@ca italread mixconcrete.com
Capital Ready Mix Concrete - Turkey Creek LLC
Sara Lochren - General Manager
270 Moncure Pittshoro Rd.
City Pittshoro State NC ZIP Code 27559
County Chatham County
Telephone No. 919 999-0345 Fax: j
3) Physical location information: 35. ! Q q ff
Please provide narrative directions to the facility (use street names, sttate road number`s, and distance and
direction from a roadway intersection). Heading South on Highway 501 from the '1'own of Pittsboro,
take a left hand turn on SR 1012 ,Moncure Pittshoro Road. The Property is located approximately 1,200ft down on the right.
(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°42'10,77"N
Longitude 79°10'30.02" w (deg, min, sec)
5) This NPDES Permit Application applies to the following (check all that apply):
I] New or Proposed Facility Date operation is to begin June 2018
❑ Existing Facility
Permit #
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NCG140000 N.O.I.
6) Consultant's application information:
Consultant: JD Freeman
Consulting Firm: WithersRavenel
Mailing Address: 115 MacKenan Drive
City: Cary
State: NC Zip Code: 27511
Phone: (919 ) 469-3340 Fax: {�
Email: [e-mail]
(Optional)
Staple Business Card Here:
7) 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
8) Provide a brief description of the types of industrial activities and products produced at this Facility:
(Attach a site diagram showing the process areas present at this facility.)
Concrete production will be the main site activity. Please see attached site plan that shows proposed plant location,
sediment containers, truck wash station, settling basin, and discharge point.
Stormwater Discharge, Wastewater Treatment & Discharge and Permitting Information
9) Discharge points I Receiving waters:
Number of discharge points (ditches, pipes, channels, etc.) that convey stormwater and/or wastewater from
the property:
Stormwater-only: 4 Wastewater -only. 1 Wastewater Commingled with Stormwater., 0
For new facilities: Expected date of commencement of discharge: June 2018
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? Turkey Creek - Stream index: 16-38-4
Receiving water classification(s), if known: WS-IV;NSW
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
Will this facility discharge wastewater to SA (Shellfishing) waters? ❑ Yes I] No
Note: Discharge of process wastewater to receiving waters classified as WS-11 to WS-V or SA must
be approved by the N.C. Division of Water Resources, Public Water Supply Section. If DWR
does not approve, coverage under NCG140000 cannot be granted. No new discharges of
process wastewater are permitted in receiving waters classified as WS-1 or freshwater ORW.
10) Each applicant shall provide the following information (attach additional sheets as necessary):
• Two (2) site plans depicting the facility or site with numbered outfalls which indicate stormwater and
wastewater outfalls. The plans shall legibly show. at a minimum, (existing or proposed):
o Outline of drainage areas with topographical lines and features
o Stormwater/wastewater treatment structures
o Location of numbered stormwater/wastewater outfalls (corresponding to which drainage areas)
o Runoff conveyance structures
o Areas and acreage where materials are stored
o Impervious area acreages
a Location(s) of streams and/or wetlands the site is draining to, and any applicable buffers
o Site property lines, North Arrow, and bar scale
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NCG140000 N.01
o If applicable, the 100-year floodplain line
o Acreage of each stormwater and wastewater topographical area
o Each of the facilities' wastewater or stormwater source and discharge structures and each of its
hazardous waste treatment, storage, or disposal facilities
o Site location (insert)
Site plans shall be 24" x 36" in size.
• Line drawing and description: A line drawing of the water flow through the facility. A pictorial
description of the nature and amount of any sources of water and any collection and treatment measures.
• A narrative description and identification of each type of process, operation, or production area which
contributes wastewater to the effluent for each outfall, and a description of the treatment the wastewater
receives (or will receive), including the ultimate disposal of any solid or fluid wastes other than by
discharge. Processes, operations, or production areas may be described in general terms (e.g. "ash
silo").
11) Does the applicant have any unresolved Notice of Violations (NOVs)?
© No ❑ Yes
Wastewater.
12) What types of wastewater does your facility generate or discharge?
Type of Authorized Wastewater
Generate
Discharge
Sent to WW
Treatment
System
Vehicle and equipment cleaning VE
❑
❑
❑
Wetting of raw material stockpiles (RM)
❑
❑
❑
Mixing drum cleaning MD
❑
M
❑
Further explanation, if necessary. Truck engine/grease wash downs will NOT be implimented on site. Wetting of
aggregate piles will not take place.
13) Will your facility spray -down or actively wet aggregate piles?
x❑ No ❑ Yes
14) Does the facility use any of the following on site?
❑ Phosphorus -containing Detergents ❑ Non -Phosphorus -containing Detergents
❑ Brighteners ❑ Other Cleaning Agents ❑ Other:
15) Are wastewater treatment facilities planned in the 100-year flood plain?
ff] No ❑ Yes
16) Does your facility use or plan to use a recycle system, or recycle components in your treatment system?
❑ Yes 0 No
If yes, what size storm event is the system designed to hold before overflowing? (for example, 1 D-yr, 24-hr)
year, 24-hr rainfall event
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NCG140000 N.O.I.
17) Will your facility build a closed -loop recycle system that meets design requirements in 15A NCAC 02T
f 1000 and hold your facilities' working volume'?
® Yes ❑ No
Will your facility discharge wastewater to surface waters?
©Yes ❑No
If the facility's treatment system meets the design requirements of 15A NCACO2T .1000 (including
holding the 25-year, 24-hour storm plus one foot of freeboard), holds the working volume of your site,
and does not discharge wastewater to surface waters, you may not be required to obtain an NPDES
permit for wastewater discharges. If you believe this is the case, please contact DEMLR's Aquifer
Protection Section Land Application Unit Central Office Supervisor or staff (1636 Mail Service Center,
Raleigh, NC 27699-1636) for more information on obtaining the necessary permits or approvals. if you will
discharge wastewater or stormwater to surface waters, please continue to apply for a permit to discharge
associated with ready -mixed concrete or like operations under NCG140000. For further questions, please
contact DEMLR's Stormwater Permitting Unit Staff,
18) A wastewater treatment alternatives review is required by 15A NCAC 2H.0105 (c)(2) for any new or
expanding water pollution control facility's discharge in North Carolina. You may attach additional sheets.
a) What wastewaters were considered for this alternatives review? ❑ VE ❑ RM 111 MD
b) Connection to a Municipal or Regional Sewer Collection System:
i) Are there existing sewer lines within a one -mile radius? ..................................... x❑ Yes ❑ No
(1) If Yes, will the wastewater treatment plant (WWTP) accept the wastewater? .... El Yes ❑ No
(a) If No, please attach a letter documenting that the WWTP will not accept the wastewater.
(b) If Yes, is it feasible to connect to the WWTP? Why or why not?*
It is not currently feasible to connect tut he WWTP in the Town of Pittsboro. The Town of Pittsboro has a
VERY limited capacity in their exsiting WWTP and is not accepting a large amount of "Proposed Flow."
The Town would consider accepting a small amount of flow but it would limit the production on site.
c) Closed -loop Recycle System (must meet design requirements of 15A NCAC 2T .1000):
i) Are you already proposing a closed -loop recycle system (CLRS)? ❑ Yes ® No
(1) If Yes, contact DEMLR's Aquifer Protection Section's Land Application Unit
(2) If No, is this option technologically feasible (possible)? Why or why not?*
This option is technologically feasible and will be im limented as soon as financially feasible. Capital
Ready Mix Concrete has been looking into multiple systems that would facilitate recylced water on their
wash station. Plans are to add this CLRS in the next 2-5 years.
(3) if No, is it feasible to build a CLRS on your site? Why or why not?*
Yes, it is feasible and will be implimented in the future. There is enough room and the Engineer has
considered spacing in site design.
(4) What is the feasibility of building a CLRS compared to direct surface water discharge?*
It is feasible to build a closed loop recycled system. The discharee point to surface waters will be used as a—
back up or emergency system as well as the initial treatment method while the CLRS is being constructed.
d) Surface or Subsurface Disposal System (e.g., spray irrigation):
i) Is a surface or subsurface disposal technologically feasible (possible)? ...... .............. ❑ Yes ® No
I See DWQ's Aquifer Protection Section Land Application Unit's Water Balance Calculation Policy for more information, on DWQ LAU's
website htto://portal.ncdenrportal.ncdenr.org/webl�laps/tau/policies for more information.
Page 4 of 7
5WU-220-07122011 Last revised 712114

NCG140000 N.O.I.
Why or Why not? Subsurface leach fields are not feasible due to location and size contraints. Surface spray
irrigation is not feasible due to lack of neccessity, cost and location.
ii) Is a surface or subsurface disposal system feasible to implement?*.......... .............. El Yes M No
Why or Why not?
iii) What is the feasibility of employing a subsurface or surface discharge as compared to a direct
discharge to surface waters?'
The proposed settling basin in approximately 100 feet from the surface waters of Turkey Creek, just outside of
the 100 year FEMA Floodplain and "Lone 2 Riparian Buffer on a steep slope. The surface irrigation or subsurface
irrigation is not feasible due to extremely steep grade down to creek, location constraints, and cost to implement.
e) Direct Discharge to Surface Waters: Is discharge to surface waters the most environmentally sound
alternative of all reasonably cost-effective options of the wastewaters being considered?*... © Yes ❑ No
i) if No, contact DEMLR's Land Application Unit to determine permitting requirements.
f) If this review included all wastewater discharge types, would excluding some types (e.g. raw
stockpile wetting) make any of the above non -discharge options feasible? ..............❑ Yes ® No
You maybe asked to provide further information to support your answers to these questions after the initial review.
Feasibility should take into account initial and recurring costs.
Stormwater:
19) Does this facility employ any best management practices for Stormwater control? ❑ No I] Yes
If yes, please briefly describe. Based on proposed increased impervious area (-2 acres) Capital Ready Mix Concrete
is required to treat a drainage area of 1.70 acres. A 6,000 SF dry detention basin has been designed and will be
implemented on the southern portion of the site.
20) Does this facility have a Stormwater Pollution Prevention Plan? 0 No ❑ Yes
If yes, when was it implemented?
21) Are vehicle maintenance activities (VMA) occurring or planned at this facility? ❑ No I]Yes
If yes, does your VMA area discharge into your wastewater treatment device? [K] No ❑ Yes
Other/Permittinq:
22) Does this facility have a Division of Land Resources Erosion & Sedimentation Control (E&SC) Permit?
0 No ❑ Yes
If yes, list the permit numbers for all current E&SC permits for this facility:
23) Is your facility subject to Phase II Post -Construction Area? ❑ Yes
If yes, who is the permitting authority?
® No
24) Is your facility located in one of the 20 Coastal Counties? ❑ Yes ❑x No
Is your facility adding more than 10,000 ftz of built -upon area or CAMA Major Permit? ❑ Yes 0 No
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SWU-229-07122011 Last revised 7t2l14

NCG140000 N.O.I.
25) Is your facility discharging wastewater (treated or untreated) such as water from wetting of aggregate piles,
drum rinse -out, or vehicle and equipment cleaning to a stormwater BMP? 0 No ❑ Yes
If yes, please attach your approval from the permitting authority to do so.
26) Does this facility have any other NPDES permits? ® No ❑ Yes
If yes, list the permit numbers for all current NPDES permits for this facility:
27) 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:
28) Hazardous Waste:
a) Is this facility a Hazardous Waste Treatment, Storage, or Disposal Facility?
0 No ❑ Yes
b) Is this facility a Small Quantity Generator (less than 1000 kg. of hazardous waste generated per month) of
hazardous waste?
0 No ❑ Yes
c) Is this facility a Large Quantity Generator (1000 kg. or more of hazardous waste generated per month) of
hazardous waste?
0 No ❑ Yes
d) Type(s) of waste:
How is material stored: Sediment is stored in square open face containers
Where is material stored: Please see attached exhibit "Proposed Material Storage Bins"
How many disposal shipments per year:
Name of transport 1 disposal vendor:
Vendor address:
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.
`t 0 This completed application and all supporting documentation. See Question 10.
❑x 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).
l x❑ Two (2) site plans depicting the site plan with numbered outfalls which indicate stormwater and wastewater
ti outfalls. See Question 10.
0 A county map or USGS quad sheet with location of facility clearly marked.
29) Signatory Requirements (per40 CFR 122.22)
All applications, reports, or information submitted to the Director shall be signed and certified.
a. All notices of intent to be covered under this General Permit shall be signed as follows:
(S) For a corporation; by a responsible corporate officer. For the purpose of this permit, a responsible corporate officer means: (a) a president,
secretary, treasurer or vice president of the corporation in charge of a principal business function, or any other person who performs similar
policy or decision making functions for the corporation, or (b) the manager of one or more manufacturing production or operating facilities
employing more than 250 persons or having gross annual sales or expenditures exceeding 25 million (in second quarter 1980 dollars), if
authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures.
(2) For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or
(3) For a municipality, state, federal, or other public agency: by either a principal executive officer or ranking elected official.
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NCG140000 N.O.I.
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 application, 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 (S10,000).
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.
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 Sign
Title: ,Owner - Capital Ready V
of ArooliGA
James Lochren
crete
At, 17
(Date Signed)
Notice of Intent must be accompanied by a check or money order for $100.00 made payable to: NCDENR
Mail the entire package to:
Stormwater Permitting Unit Program
Division of Energy, Mineral and Land Resources
1612 Mail Service Center
Raleigh, North Carolina 27699-1612
Note
The submission of this document does not guarantee the issuance of an NPDES permit.
For questions, please contact the DEMLR Regional Office for your area.
DEMLR Regional Office Contact Information:
Asheville Office ......
[phone]
Fayetteville Office ...
[phone]
Mooresville Office ...
[phone]
Raleigh Office ........
[phone]
Washington Office ...
[phone]
Wilmington Office ...
[phone]
Winston-Salem ......
[phone]
Central Office .........
[phone]
Page 7 of 7
SWU-229-07122011 Last revised 7/2114

0 WithersRavenel
091 Our People. Your Success.
August 21, 2017
NCDENR - Division of Energy, Mineral and Land Resources
217 West Jones Street
Raleigh, NC 27603
RE: NPDES General Discharge Permit NCG140000 Narrative
To Whom It May Concern:
This is a brief narrative to identify and describe the site and operations for the production of ready mix
concrete at the proposed concrete plant in the Town of Pittsboro.
The proposed property is a 20.75-acre tract located at 270 Moncure Pittsboro Road in Pittsboro, North
Carolina (PIN 9741-2071-9128). It is currently zoned as M2 Heavy Industrial. See attached Site Plan for
vicinity reference and details. An approved Stormwater Discharge permit has been submitted to the Town of
Pittsboro, and a Land Disturbance and Sedimentation & Erosion Control Plan is currently in review by
Chatham County.
This site was first developed in 1948, and much of the area was deemed to be impervious surface. It was
determined by staff at WithersRavenel and the Town of Pittsboro that the site has a large portion of
preexisting impervious area grandfathered in with no existing stormwater control measures. It shall be the
owner's responsibility to treat any net increase of impervious surface area added to the site. From the site
plan it was determined that there would be a net increase of 1.74 acres. The proposed solution is to treat all
run off water coming from the area, shaded in light cyan, which is a total drainage area of 2.56 acres. This will
be routed to the 6,000 SQFT dry basin in the southern portion of the site. Discharge routed through the pond
is treated through a riser structure, level spreader & filter strip, and a high bypass outlet barrel before being
discharged into Turkey Creek. The runoff is treated per State and Town requirements. Details can be found
in the approved stormwater management plan held at the Town of Pittsboro or at Withers Rave neI's Cary
office.
Drainage from the rest of the site is routed into four outlet structure outfalIs, some of which were preexisting.
The high point of the site is at the 386 contour at the northern most driveway, and the water lines on the site
plan depict the flow's path to several catch basins that tie into the storm drainage system. The first outlet
structure, labeled Outfall #1, is on the southwest corner of the site at the base of the proposed retaining wall.
This outfall takes the sheet flow between the storage bins and the western retaining wall. Outfall #2 takes
the flow from the shaded drainage area and is routed and treated in the stormwater control measure (SCM).
Outfall #3 is located on the south facing retaining wall towards the eastern portion of the site. This outfall
takes the drainage from the storage bin area as well as the center where the concrete plant is located. The
last outfall, labeled Outfall #4, is located on the southeast corner of the sitejust behind the settling basin. This
outfall takes the flow from the east section of the site, from the 368 contour over.
The settling basin outfall, adjacent to the settling basin, is labeled" Proposed Discharge Point." Please see the
attached details of the truck wash station, the two settling chambers, and the settling basin. The truck wash
station is a three chamber system that forces the heavier aggregates and solids to settle out before reaching
the final settling chamber, the stand pipe, and finally the discharge point. The two truck wash stations are 5
feet deep and are connected via a weir that allows water to pass from basin #1 to basin #2. Basin #2 is
connected to the largest settle basin which has the FORTRANs unit treatment system. The permanent pool
elevation of this basin is 362 with a depth of 3 feet. A 12-inch corrugated metal pipe is used as a stand pipe
and serves as the inlet for clean, pH balanced, water which is discharged out through an 8-inch ductile iron
pipe outfall. There is a proposed riprap apron and dissipater to mitigate any erosion or point flow coming from
115 MacKenan Drive I Cary, NC 27511
t: 919.469.33401 f: 919.467.6008 www.withersravenel.com I License No. C-0632
Cary I Greensboro Pittsboro I Raleigh I Wilmington

��.. WithersRavenet
Our People. Your Success.
the basin. T the monitoring station for the monthly and quartile tests is located here. Projections show that
in the next few years Capital Ready Mix Concrete will be investing in a closed looped system and the basin
will be used as their emergency back up only. Although it will not be immediately brought online, we have
included the reuse station in the details.
The sediment that is left in the main two chambers will be removed using a front-end loader and transported
to a "drying bin" on the west side of the site. Once material has been dewatered and dried, it will be hauled
off -site and disposed of accordingly. It is not projected that much sediment will reach the third, large settling
basin, but this will be maintained and any solids removed on an as needed basis.,. The large settling basin is
concrete in design and has a 6-inch curb that surrounds it. This curb will negate the ability of stormwater to
flow into the basin and increase the volume of treated water. The intent of the proposed design is to ensure
that all wash water and stormwater will be treated and discharged separately. The stormwater from the
eastern portion of the site will be diverted around this basin and discharged from Outfall #4 as show on the
attachment.
If you have any questions, comments or concerns feel free to reach me via email at
ifreeman(@withersravenel.com or at [phone] by phone.
Sincerely
WithersRavenel
I
man PE, LEEDAP
Manager - Utilities Group
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Page 2 of 2

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STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT N0. /v I� 0y6 1-0
DOC TYPE 4-1 HISTORICAL FILE
MONITORING REPORTS
DOC DATE I ❑ ') b I 7 1 0 a L
YYYYMMDD

Energy, Mineral &
Land Resources
ENVIRONMENTAL QUALITY
James Lochren
Capital Ready Mix — Turkey Creek LLC
512 Three Sisters Road
Knightdale, NC 27545
Dear Mr. Lochren:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
TRACY DAVIS
Director
October 26, 2017
Subject: General Permit No. NCG140000
Capital Ready Mix
Turkey Creek LLC
COC NCG140456
Chatham County
In accordance with your application for a discharge permit received on August 28, 2017, 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 October 15, 2007 (or as subsequently amended).
Please take notice that this certificate of coverage (COC) is not transferable except after notice to the
Division of Energy, Mineral, and Land Resources. The Division may require modification or revocation
and reissuance of the certificate of coverage.
Please note that NCG140000 contains effluent limitations for process wastewater discharges (see Part IV,
Section D). Wastewater discharges must meet the requirements of these effluent limitations. An
exceedance of any of these limitations is a violation ofpermit conditions.
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Energy, Mining, and Land Resources.. or permits required by the Division of Water
Resources, Coastal Area Management Act, or any other federal or local governmental permit that may be
required.
If you have any questions concerning this permit, please contact Richard Riddle at telephone number
[phone].
Sincerely,
O rtgi.tal diq*a 4 Rci -zd d. rRw&, &.
for Tracy E. Davis, P.E., CPM
cc: Raleigh Regional Office
Central Files
Stormwater Permitting Program Files
Nothing Compares--.---
SState of North Carolina i Environmental Quality 1 Energy. Mineral and Land Resources
5I2 N. Salisbury Street 1 1612 Mail Service Center I Raleigh. North Carolina 27699-1612
919 707 9200

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s:AX

Riddle, Rick L
From: Valentine, Thad
Sent: Wednesday, September 27, 2017 3:47 PM
To: Riddle, Rick L
Subject: Turkey Creek Comments
Rick
From looking at the drawings it appears that most of the site runoff, which includes the concrete loading silo area, flows
toward the South to a proposed 6,000ft2 SCM (Stormwater Control Measure) and would be high in pH and acidity. They
have a treatment unit for the 2,000ft2 settling basin on the East side of the facility but no type of treatment for that SCM
on the South end of the project. I,would say they need another treatment unit at that SCM or provide a diversion berm or
Swale to divert that flow to the settling pond. They would need to resize the pond and possible the treatment unit to
account for the additional runoff. They should also have permanent diversions on each side of the SCM to divert runoff
into the SCM, otherwise most of the runoff goes directly into Turkey creek with no settling. That last part may be more of
an erosion control issue but you can weed out any comment that you feel aren't relevant.

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