NCG140391_COMPLETE FILE - HISTORICAL_20170628

STaRMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO
/v yO 3
DOC TYPE
C� HISTORICAL FILE
❑ MONITORING REPORTS
DOC DATE
❑ o� I % D (4 0? b
YYYYMMDD

ROY COOPER
C'opemor
MICHAEL S REGAN
SM r etar y
Fnm onmentol
Quabty
June 28, 2017
C1 AD HARTLEY - PRESIDENT
HARTLEY READY MIX MANUFACTURING INC
1040 BOULDER RD
GREENSBORO, NC 27409-9106
Subject Multimedia Compliance Inspection
Hartley Ready Mix Concrete
Guilford County
Dear Permittee
Department of Environmental Quality staff from the Winston-Salem Regional Office conducted a
multimedia compliance inspection of Hartley Ready Mix Concrete on June 13, 2017 for permits and
programs administered by the following Divisions
Division of Air
Division of Energy,
Division of Water
Division of Waste
Quality
Mineral, and Land
Resources
Management
Resources
We appreciate your cooperation during the inspection and hope that you have enjoyed the benefit of our
initiative to provide a single inspector capable of handling multiple areas of environmental compliance at
your facility The results of each applicable inspection and any associated response actions or necessary
corrective measures are detailed in the inspection letters/reports attached to this transmittal sheet If a
Division report is not attached, you may assume compliance with that Division's rules and regulations at
the time of inspection
If you have any questions regarding this multimedia inspection, please contact Sue Homewood at (336)
776-9693 or sue homewood@ncdenr gov Thank you for your cooperation
encl Air Quality Inspection Report
Stormwater Inspection Report
cc DAQ WSRO Files
DEMLR WSRO Files
DWR WSRO Files
DWM WSRO Files
SiateofNlorthCarolina I FnvironmMnralQualtty
VVI]WAMI S krft R(yi011ai Ofiice 1 150 West Hanes Mill Road Suite 300 1 Winston Salem North (.druln1a 27105 7407
336 776 (1800 r 1 33(,776 g797 F

NORTH CAROLINA DIVISION OF
AIR QUALITY
Inspection Report
Date 06/19/2017
Facility Data
Hartley Ready Mix Concrete Manufacturing, Inc
1040 Boulder Road
Greensboro, NC 27409
Lat 36d 3 6700m Long 79d 56 1570m
SIC 3273 / Ready -Mixed Concrete
NAICS 32732 / Ready -Mix Concrete Manufacturing
Facility Contact
Tyler Hartley
Operations Manager
[phone]
Comments
Contact Data
Authorized Contact
Chad Hartley
President
[phone]
Inspector's Signature
Date of Signature (A zx(zoo-
Winston-Salem Regional Office
Hartley Ready Mix Concrete Manufacturing, Inc
NC Facility ID 4101 177
County/FIPS Guilford/081
Permit Data
Permit 09425 / R02
Issued 1/27/2014
Expires 1213IY2021
Classification Small
Permit Status Active
Current Permit Application(s) None
Technical Contact I SIP
Chad Hartley
President
[phone]
Program Applicability
Compliance Data
Inspection Date 06/13/2017
Inspector's Name Sue Homewood
Operating Status Operating
Compliance Code Compliance - inspection
Action Code FCE
RS On -Site Inspection Result Compliance
I Total Actual emissinns in TONSIVEAR I
TSP
S02
NOX
VOC
CO
PM 10
* HAP
2012
05200
---
00100
---
00100
02500
03740
2007
05000
---
00400
---
00200
02300
05940
Five Year Violation History None
Date Letter Type Rule Violated
Performed Stack Tests since last FCE None
Date Test Results Test Method(§)
* Hidest HAP Emitted
Violation Resolution Date
Source(s) Tested

Permitted Sources
-
Emission
- -- - - ---
Emission Source
Control
System
------ - - �
Control System
Source ID
Description
ID
Description
One truck mix concrete batch plant (135 cubic yards per hour maximum capacity),
consisting of
S-1
F One cement storage silo
Gl
One bagfilter
(1,433 square feet of filter surface
area)
S-2
One fly ash storage silo
M-1 One truck mix operation
- _ - - --------
H-1 One cement and fly ash batcher
One bagfilter -- - - -
(20 square feet of filter surface
area)
C-2
Insignificant 1 Exempt Activities
Sourcef
Source
Exemption
ource of
IS
V
TitlePollutants9
Regulation
TAPs9
1-ES 1 - One natural gas -fired hot water heater
(1 2 million Btu per hour maximum rated heat
2Q 0102 (c)(2)(13)(n)
Yes
I
Yes
input)
I
I-ES2 - 10,000 gallon Aboveground
Diesel Fuel Storage Tank
2Q 0102 (c)(1)(D)(t)
Yes
Yes
Discussion
On June 13, 2017, Sue Homewood, Environmental Specialist for the WSRO-DWR, contacted Mr Tyler
Hartley, of Hartley Ready Mix Concrete Manufacturing, for the purpose of conducting a multi -media inspection
of this permitted facility Hartley Ready Mix Concrete Manufacturing was last inspected by DAQ personnel on
August 5, 2016 and the facility appeared to be operating in compliance at that time The facility is currently
operating 8-10 hours a day, five days a week, and 50 weeks per year Contact information was reviewed with
Mr Hartley and no changes are needed in IBEAM database
Safety
Inspectors are required to wear safety shoes, safety glasses, and hardhat Hearing protection and reflective
safety vest are recommended and inspectors should be aware of truck traffic
Applicable Regulations
Applicable regulations listed in the current air permit (09425R02) include Title 15A NCAC, Subchapter 2D
0202, 2D 0515, 2D 0521, 2D 0535, 2D 0540, 2D 0611, 2D 1806, 2Q 0309, and 2Q 0711 This facility is
not required to implement a risk management plan under the federal regulation 40 CFR 68, Section 112(r)
because they do not produce, use or store any of the regulated chemicals in quantities above the threshold limits
2

However, the General Duty Clause contained in this rule applies to all facilities and requires the safe and
responsible handling of hazardous materials in any quantity
Process
The facility produces batch concrete in a truck -mixing process The facility operates five days per week
annually This plant currently produces mainly a 3,000-4,500 psi strength concrete used in road construction
and for residential purposes The aggregate materials are weighed and then dispensed in measured amounts
from the bottom of each hopper onto a conveyor that takes them to the weigh hopper Measured amounts of
cement and flyash (as applicable) are dispensed from the silo(s) into the weigh hopper Water or heated water
(dunng winter months) and designated amounts of a water reducer and/or other additives are then added to the
mix before the concrete is dropped into the mixing truck
Inspection
The facility operates a cement storage silo, S1, a flyash storage silo, S2, a truck mix operation, M-1, and a
batcher for cement and fly ash, H-1 Particulate matter from most of these emission sources are controlled only
from the central bagfilter (CD-1) The exception is H-1, which is controlled by bagfilter, C-2 During the
inspection, a few mixing trucks were being loaded with concrete No visible emissions were detected,
indicating compliance with 2D 0521 This facility receives flyash approximately once per month and cement
up to once per day Hartley Concrete currently keeps extra bags onsite There is an alarm system, which
prevents any overfilling or over pressurizing during the filling of cement or flyash
The facility operates a total of six 300-1,000-gallon aboveground storage tanks used for additives in the concrete
mix All of these tanks are located in a large steel storage container adjacent to aggregate storage bins The
exempt diesel storage tank (I-ES2) are also on -site This tank is used to fuel the facility's mix trucks, but also the
front-end loader This tank is located outside near the aggregate storage bins
The facility operates a natural gas -fired water heater (I-01) used to heat process water mainly in the winter It is
exempt from NC permitting This heater is located in a building and adjacent to the truck loadout area
Permit Conditions
Condition A 2 contains the 2D 0202 requirements, which include submitting an emissions inventory at least 90
days prior to the expiration date of the permit The facility's permit expires on December 31, 2021
Compliance is anticipated
Condition A 3 contains the 2D 0515 requirements associated with particulates from miscellaneous industrial
processes The allowable PM emission rate for silo S-I and S-2 are each 41 3 lbs PM/hr The allowable PM
emission rate for the M-1 and H-1 are 619 lbs PM/hr and 41 5 lbs. PM/hr, respectively With the bagfilters
having a control efficiency of 99%, calculated emissions (taken from Mr Leo Governale, WSRO-DAQ Permit
Engineer, review dated January 27, 2014) from S-1 is 0 035 lbs PM/hr , S-2 is 0 31 lbs PM/hr , M-1 is 4 56 lbs
PM/hr, and 1 00 lbs PM/hr It appears all sources and corresponding controls are well maintained
Compliance with 2D 0515 is indicated
Condition A 5 pertains to regulation 2D 0535 "Notification Requirement " The facility is to notify the DAQ
director of any source with excess emissions that last for more than four hours and that result from a
malfunction, a breakdown of process, or any other abnormal conditions No notifications have been received
since the last inspection and Mr Hartley was unaware of any issues Compliance is indicated
3

Condition A 6 (2D 0540) concerns the "Fugitive Dust Control Requirement " The inspector observed no
fugitive dust emissions near the facility boundary, indicating likely compliance The facility's access points
(roads) are generally a concrete surface and kept clean of material No dust was observed oft the plant s
property
Condition A 7 (21) 0611) concerns the control of particulate emissions The facility is required to perform, at
minimum, an annual internal inspection of the bagfilters and record all maintenance activities in a logbook to be
made available to Division personnel The last internal inspection for both bagfilters was performed on June 5,
2017 The bags for C-1 were replaced in August 2016 The facility cleans all bags one time and re -use
(recycle) them, then they are discarded All of this information is documented in an in-house electronic
maintenance log, which is connected to a server, which has back-up capabilities based on discussion with plant
personnel Compliance is indicated
Condition A 8 (21) 1806) concerns the control of odorous emissions No objectionable odors were noted
during the inspection, indicating likely compliance
Condition A 10 pertains to "Toxic Air Pollutant Emissions Limitation Requirement " Mr Governale wrote the
following in the latest permit review " A toxtcs review was triggered during the initial permit review for the
initial permit and the toxics expected were Arsenic, Beryllium, Cadmium, Chromic Acid (Soluble Chromate
Compounds), Manganese, and Nickel The table below lists the actual emissions of these pollutants based on
the reported CY 2012 Emissions Inventory and the facility's previously established operating schedule of 200
days/yr A toxics review is not triggered for this review and there are no changes to this regulation as part of
this renewal "
Pollutant_ TPER r
CY 20.12 Actual Emissions
Arsenic 0 016 lbs /yr
0 01 lbs. /yr
Beryllium
0 28 lbs /yr
0 00086 lbs /yr
Cadmium
0 37 lbs /yr
0 000094 lbs /yr
Chromic Acid
0 013 lbs /day
0 00155 lbs /day
Manganese
0 63 lbs /day
0 0007 lbs /day
Nickel
0 13 lbs /day
0 00018 lbs /day
Compliance is demonstrated based 2012 and 2015 CY production (latest) Production has remained relatively
steady during the last few years
MACT/GACT
This facility is not subject to any currently promulgated NESHAP regulation
NSPS
The Natural Gas -fired Hot Water Heater (I-ESI) is not subject to 40 CFR 63 Subpart JJJJJJ - National
Emission Standards for Hazardous Air Pollutants for Industrial, Commercial, and Institutional Boilers
Area Sources because it is gas -fired as defined under §63 11237 of this Subpart
4

➢ The exempt Natural Gas -fired Hot Water Heater (I -ES 1) is not subject to 40 CFR 60, Subpart Dc,
Standards of Performance for Small Industnat- Commercial -Institutional Steam Generating Units
because the heat input is less than 10 million Btu per hour
➢ The 10,000-gallon Aboveground Diesel Fuel Storage Tank (ID No I-ES2) is not subject to 40 CFR Part
60 Subpart Kb, Standards of Performance for Volatile Organic Liquid Storage Vessels (Including
Petroleum Liquid Storage Vessels) for Which Construction, Reconstruction, or Modification
Commenced After July 23, 1984, because this rule does not apply to storage tanks with capacities less
than 75 m3 (approximately 19,813 gallons) that are used to store volatile organic liquids
Permit Discussion
The facility operates a total of six 300-1,000-gallon aboveground storage tanks used for additives in the
concrete mix, which can be exempted under DAQ rules All of these tanks are located in a large steel storage
container adjacent to aggregate storage bins and could be included on the Insignificant 1 Exempt Activities" list
during the next permit cycle
Facility Wide Emissions (taken from latest permit review by Mr Governale)
"The following table summarizes the facility -wide emissions obtained from the submitted CY 2012 Emissions
Inventory The actual and potential emissions were calculated using the NCDENR Concrete Batch Plant
Emissions Calculator Spreadsheet, Revision B, 11/5/2013 based on the reported total production of 26,053 85
cubic yards and the emissions for the Natural Gas -fired Water Heater were tabulated using the Natural Gas
Combustion Emissions Calculator Spreadsheet, Revision L, 10/08/2013, as submitted with this application See
table footnote regarding Title V considerations "
CY
Potential Emissions
Potential Emissions
Pollutant
2012 Actual
Emissions
Before Controls and
After Controls and
I
(tonslyr.} �
Limits
Limits f
(tons/yr)
- (tons/yr
PM
052
447 64
2380
PM,o----025
17088
PM o for Title V (excludes
W - _�
NIA
---1140
0 215
fugitive*)
o 00 -- -- - -
� o ao -
i, 000
F— S02-____--�---
CO
�
0 0 l
�� -^-- 043
� 043
NOx
0.01
-- 0 52 -----
I
f---- -- 0 52
VOC
L 000
0 719 1bs /yr
003
149 401bs /yr
003
34 30 lbs /yr
F Total HAPs _ _
Highest HAP
0 37 lbs /yr
68 60 lbs /yr
18 60 lbs /yr
[Hexane]
[Manganese]
[Hexane]
5

Includes only emissions from the Cement and Flyash Storage Silos Emissions from the Batcher and
Truck Mix Operation are not included for Title V applicability because emissions from these sources are
uncontrolled (i e not emitted from a point source) and are considered fugitive as determined by the EPA
Emissions from sand and aggregate handling are uncontrolled and are also considered fugitive
Additionally, EPA considers Bagfilters on Silos to be integral, and so Title V potential emissions for this
facility can be evaluated after controls In either case, this facility's classification is small
Compliance History (last five years)
No Notice of Deficiency or Notice of Violation has been issued to this permitted facility
Conclusion
Based on observations and record reviews made during the June 13, 2017 inspection the facility appears to be
operating in compliance with all applicable air quality regulations and standards

Permit NCG140391
SOC
County Guilford
Region Winston Salem
Contact Person Dickey Potts
Directions to Facility
System Classifications
Primary ORC
Secondary ORC(s)
On Site Representative(s)
Related Permits
Compliance Inspection Report
Effective 07101/16 Expiration D6f30117 Owner Hartleys Ready Mix Concrete
Effective Expiration Facility Hartley Ready Mix Concrete Mfg Inc
1040 Boulder Rd
Inspection Date 0611312017
Primary Inspector Sue L Homewood
Secondary Inspector(s)
Title
Entry Time 10 45AM
Certification
Greensboro NC 27409
Exit Time 11 30AM
Phone [phone]
Phone
Phone [phone]
Reason for Inspection Routine Inspection Type Compliance Evaluation
Permit Inspection Type Ready Mix Concrete Stormwater/Wastewater Discharge COC
Facility Status compliant Not Compliant
Question Areas
■ Storm Water
(See attachment summary)
Page 1

Permit NCG140391 Owner Facility Hartleys Ready Mix Concrete
Inspection Date 0611312017 Inspection Type Compliance Evaluation Reason for Visit Routine
Inspection Summary
Page 2

Permit NCG140391 Owner Facility Hartleys Ready Mix Commie
Inspection Date 06I13I2017 Inspection Type Compliance Evaluation Reason for Visit Routine
3tonnwater Pollution Prevention Plan
Yes No NA NE
Does the site have a Stormwater Pollution Prevention Plan?
® ❑ ❑ ❑
# Does the Plan include a General Location (USGS) map?
0 ❑ ❑ ❑
# Does the Plan include a Narrative Description of Practices
N ❑ ❑ ❑
# Does the Plan include a detailed site map including outfall locations and drainage areas?
E ❑ ❑ ❑
# Does the Plan include a list of significant spills occurring during the past 3 years?
❑ ❑ E ❑
# Has the facility evaluated feasible alternatives to current practices?
■ ❑ ❑ ❑
# Does the facility provide all necessary secondary containment?
❑ ❑ ® ❑
# Does the Plan include a BMP summary?
® ❑ ❑ ❑
# Does the Plan include a Spill Prevention and Response Plan (SPRP)?
0 ❑ ❑ ❑
# Does the Plan Include a Preventative Maintenance and Good Housekeeping Plan?
❑ ❑ ❑
# Does the facility provide and document Employee Training?
❑ ❑ ❑
# Does the Plan include a Itst of Responsible Party(s)?
® ❑ ❑ ❑
# Is the Plan reviewed and updated annually?
❑ ❑ ❑
# Does the Plan include a Stormwater Facility Inspection Program?
S ❑ ❑ ❑
Has the Stormwater Pollution Prevention Plan been implemented?
N ❑ ❑ ❑
Comment Documentation in good order
Qualitative Monitoring Yes No NA NE
Has the facility conducted its Qualitative Monitoring semi annually? N ❑ ❑ ❑
Comment Monitoring conducted in May 2016, January 2017 and May 2017 Mr Tyler Hartley is aware that
another monitoring event will be required between Juiv and December of 2017
Analytical Monitoring Yel No t1A N
Has the facility conducted its Analytical monitoring? 0 ❑ ❑ ❑
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ❑ ❑ ❑
Comment Monttoring dates May 2016 January, 3 2017 and May 24 2017 All 2017 results within
benchmark limits
Permit and Outfalls
Yes. No NA NE
# Is a copy of the Permit and the Certificate of Coverage available at the site? ❑ ❑ ❑
# Were all outfalls observed during the inspection? N ❑ 1111
# If the facility has representative outfall status is it properly documented by the Division? ❑ ❑ . ❑
# Has the facility evaluated all illicit (non stormwater) discharges? ❑ 110 ❑
Comment The site was in exemplary condition, very neat and clean throuqhout
Page 3

DAQ -Toolbox - FacFinder C� r Page 1 of 1
it Quality v Toolbox VI FacFinder v
Welcome to Facility Finder [Ent] HelpELogoif
Find Facility g:
Compliance Data
Facility Data
Assigned Inspector Sue Homewood
Hartley Ready Mix Concrete Manufacturing,
Operating Status Operating
Compliance Status Compliance - inspection
Inc
1040 Boulder Road
Inspection Date 08/05/2016
Greensboro, NC 27409 9106
Inspected By Blair Palmer
County Guilford Lat 36d 3 6700m Long
Action Code FCE
Permit Data
9d 56 1570m
NC Facility ID 4101177
Permit 09425 / R02
SIC 32731 Ready -Mixed Concrete
Issued 1/27/2014
NAICS 327321 Ready -Mix Concrete
Expires 12/31/2021
Manufacturing
Classification Small
Permit Status Active
Authorized Contact Data
Invoice Contact Data
Chad Hartley, President
Hartley Ready Mix Concrete Manufacturing,
PO Box 1719
Inc
Welcome, NC 27374
Christy Hartley, Chief Financial Officer
[phone]
PO Box 1719
chadhartley@hartleyreadymix corn
Welcome, NC 27374
[phone]
Facility Contact Data
Technical Contact Data
Tyler Hartley, Operations Manager
Chad Hartley, President
P O Box 1719
PO Box 1719
Welcome, NC 27374
Welcome NC 27374
[phone]
[phone]
chadhartley@hartleyreadymix corn
Active Programs SIP
Pending Reports
Pending Source Tests
https /hbeamaq ncdenr org/aq/Toolbox/FacFmderjsp?lockey=L6745L09425 5/28/2017

NC Department of
Environmental Quality
Reci?ivvd
SEP 0 6 2016
Winstor~ Sa4*m
P,egional r, "ce
HARTLEY READY MIX CONCRETE MFG , INC
P 0 BOX 1719
WELCOME, NC 27374
[phone]
August 24 2016
I o Whom It May Concern,
In response to Notice of Deficiency NOV-2016-PC-0404 the following coriective
actions have been taken to address any potential violations noted from the onsite visit
1 Stormwatei Pollution Prevention Plan (SPPP) Annual I raining has been
provided and documented as required All certifications have been Signed off on
as rc.quimd
2 Qualitative Monitoring Proceduies have been put in place to Lnsure qualitative
monitoring 15 Londuc,ted twice per year and records to be kept with SPPP for a
five year period
3 Analytic,al Monitoring Procedures have been put in place to ensure analytical
monitoring is conducted with required parameters and that results are sent to
NCDEQ s Stonriwatet Permitting Unit in Raleigh, NC
If further information is needed please idvis(. Please male sure contact person on file is
Chad Hartley The contact number on file should be 336-788-3522 Hartley Ready Mix
Concrete Mfg Inc`s intentions and goals are to remain and maintain compliance as set
forth in the permit issued
Sincerely,
4-4--
Chad H Hartley
PrLsident
I larticy Ready Mix Concrete Mtg hic

Environmental
Quality
August 15, 2016
Mr Chad Hartley -President
Hartley Ready Mix Concrete Manufacturing, Inc
P 0 Sox 1719
Welcome, NC 27374
Subject Multimedia Compliance Inspection
Hartley Ready Mix Concrete Manufacturing, Inc
Guilford County
Dear Permittee
PAT McCRORY
Governor
DONALD R VAN DER VAART
Secretary
Department of Environmental Quality staff from the Winston-Salem Regional Office (WSRO) conducted
a multimedia compliance inspection of Hartley Ready Mix Concrete Manufacturing Inc, on August 5,
2016 for permits and programs administered by the follok� ing Dn isions
Dv* ision of Air
Division of Energy,
Dn ision of Water
Dn ision of Waste
Quality
Mineral, and Land
Resourc,e5
Management
Resources
We appreciate your cooperation during the inspection and hope that you have enjoyed the benefit of our
initiative to provide a single inspector capable of handling multiple areas of environmental compliance at
your facility The results of each appheable inspection and anv associated response actions or necessary
corrective measures are detailed in the inspection letters/reports attached to this transmittal sheet If a
Division report is not attached, you may assume compliance Frith that particular Division s rules and
regulations at the time of inspection Please note that there is a pending WSRO-DEMLR letter to be mailed
separately
If you have any questions regarding this multimedia inspection, please contact Blair Palmer at (336) 776-
9645 or blair palmeranedenr gov (hank you for your cooperation
enel Air Quality Inspection Report
StormWater Inspection Report
cc DAQ WSRO Files
DEMLR WSRO Files
DWR WSRO Files
DWM WSRO Files
State of North Carolina I Environmental Quality
Wmston Salem Regional Office 1 450 West Hanes Mill Road Suite 300 I Winston Salem North Carolina 27105 7407
336 776 9800 T 1 336 776 9797 F

HA R nJr !
r
CONCRETE, INC.
CHAD HARTLEY SNCE 1954
PRESIDENT
P O Box 1719 • Welcome NC 27374
Winston Salem Greensboro
336 788 3928 Phone [phone] Phone
336 720 9716 Fox 336-294 3995 Fox

i
x�
�, Ir
v'
w NORTH CAROLINA DIVISION OF
AIR QUALITY
r Inspection Report
Date 08/09/2016
Facility Data
Hartley Ready Mix Concrete Manufacturing, Inc
F 1040 Boulder Road
Greensboro, NC 27409
Gat 36d 3 6700m Long 79d 56 1570m
SIC 32731 Ready -Mixed Concrete
,NAICS 32732 1 Ready -Mix Concrete Manufacturing
i�vcx
Contact Data
'Facility Contact Authorized Contact Technical Contact
Winston-Salem Regional Office
Hartley Ready Mix Concrete Manufacturing, Inc
NC Facility ID 4101177
County/FIPS Guilford/081
Permit Data
Permit 09425 / R02
Issued 1/27/2014
Expires 12/31/2021
Classification Small
Permit Status Active
Current Permit Application(s) None
Program Applicability
SIP
ti-Tyler Hartley Chad Hartley Chad Hartley
i 'Operations Manager President President
[phone] [phone] [phone]
�1
Compliance Data
'Comments DAQ Inspection part of the multimedia program
r Inspection Date 08/05/2016
Inspector's Name Blair Palmer
;Inspector's Signature c; / r'� Operating Status Operating
w Compliance Code Compliance - inspection
Action Code FCE
"Date of Signature 08/10/2016 RS On -Site Inspection Result Compliance
Total Actual emissions in TONS/YEAR
-
TSP
S02
NOX
VOC
CO
PM10
* HAP
,2012
05200
---
00100
---
00100
02500
03740
'2007
. 1
05000
---
00400
---
00200
02300
05940
9' sic
�a
4 rFive Year Violation Histor None
r Date Letter Type Rule Violated
Z
i
)� L
, � I
Performed Stack Tests since last FCE None
�1 !Date Test Results Test Method(s)
Y�
* Hi2hest HAP Emitted (m
Violation Resolution Date
Source(s) Tested

x" f
i
a 1
jPermitted Sources
1114 ,
Emission
Source ID
Emission Source
Description
Control
System
ID
Control System
Description
One truck mix
concrete batch plant (135 cubic
yards per hour maximum capacity),
consisting of
S-1
One cement storage silo
One bagfilter
S-2
One fly ash storage silo
C-1 (1,433 square feet of filter surface
M-1
One truck mix operation
area)
One bagfilter
H-1
One cement and fly ash batcher
C-2 (20 square feet of filter surface
area)
-��Insignificant 1 Exempt Activities
T
' Source of
Exemption Source of
w,r _ry Source Re ulation TAPs� Title V
g Pollutants9
y 41 t I -ES 1 - One natural gas -fired hot water heater
1 2 million Btu per hour maximum rated heat 2 0102 c 2 B ii Yes Yes
(p Q {)( )( )( )
input)
I-ES2 - 10,000 gallon Aboveground
' ' a Diesel Fuel Storage Tank 2Q 0102 (c)(1)(D)(i) F
Yes Yes
r y g�Dlscussion
�,s ,On August 5, 2016, Mr Blair Palmer, Environmental Specialist for the WSRO-DAQ, contacted Mr Chad
';Hartley, President for Hartley Ready Mix Concrete Manufacturing, for the purpose of conducting a targeted
'r 6ompliance inspection of this permitted facility The DAQ inspection was also part of the multimedia
--inspection program The National Pollutant Discharge Elimination System (NPDES), specifically the
stormwater and wastewater program is part of this inspection, but that information is discussed in a different
database and report known as the Basin Wide Information Management System or `RIMS " Hartley Ready Mix
­,, Xoncrete Manufacturing was last inspected by DAQ personnel on October 16, 2013 and the facility appeared to
11�' j 7e operating in compliance at that time The facility is currently operating 8-10 hours a day, five days a week,
find 50 weeks per year Contact information was reviewed with Mr Hartley and no changes are needed in
IBEAM database
n Safety
Y" Inspectors are required to wear safety shoes, safety glasses, and hardhat Hearing protection and reflective
d`
Ysafety vest are recommended and inspectors should be aware of truck traffic
L

�Ya
c r �
t
44,Applicable Regulations
4
Applicable regulations listed in the current air permit (09425R02) include Title 15A NCAC, Subchapter 2D
0202, 2D 0515, 2D 0521, 2D 0535, 2D 0540, 2D 0611, 2D 1806, 2Q 0309, and 2Q 0711 This facility is
not required to implement a risk management plan under the federal regulation 40 CFR 68, Section 112(r)
i because they do not produce, use or store any of the regulated chemicals in quantities above the threshold limits
u " However, the General Dutv Clause contained in this rule applies to all facilities and requires the safe and
responsible handling of hazardous materials in any quantity
t
Process
The facility produces batch concrete in truck -mixing process This plant currently produces mainly a 3,000-
�4,500 psi strength concrete used in road construction and for residential purposes The aggregate materials are
J� t weighed and then dispensed in measured amounts from the bottom of each hopper onto a conveyor that takes
them to the weigh hopper Measured amounts of cement and flyash (as applicable) are dispensed from the
` } silo(s) into the weigh hopper Water or heated water (during winter months) and designated amounts of a water
f r ; reducer and/or other additives are then added to the mix before the concrete is dropped into the mixing truck
] Inspection
`,-The facility operates a cement storage silo, S1, a flyash storage silo, S2, a truck mix operation, M-1, and a
hatcher for cement and fly ash, H-1 Particulate matter from most of these emission sources are controlled only
` from the central bagfilter (CD-1) The exception is H-1, which is controlled by bagfilter, C-2 During the
`inspection, a few mixing trucks were being loaded with concrete No visible emissions were detected from the
exhaust, indicating compliance with 2D 0521 The chute for the truck loadout process appeared to be in ok
ell-
condition The shrouding on one side should be replaced and Mr Palmer advised Mr Hartley to correct the
problem Mr Hartley stated that he would address it soon It should be noted that the large bagfilter (C-1) is
z, equipped with a magnehelic gauge (located at ground level near the bagfilter) A reading of 2 inches of water
column was observed by Mr Palmer during this inspection The facility records periodic readings and records
indicate that the bagfilter operates around 3-4 inches of water column, but 2 inches is fine according to Mr
Hartley This facility receives flyash approximately once per month and cement up to once per day Hartley
Concrete currently keeps extra bags are being kept onsite based on discussion with plant personnel and
` recordkeeping There were no trucks receiving either flyash or cement (for the filling the silos) during the
inspection Mr Hartley stated that there is an alarm system, which prevents any overfilling or over pressurizing
a 4during the filling of cement or flyash All cement and flyash is filled by employees of Hartley Read Mix, not a
s z vendor, which is sometimes typical at other concrete facilities
fl ' The facility operates a total of six 300-1,000-gallon aboveground storage tanks used for additives in the concrete
mix All of these tanks are located in a large steel storage container adjacent to aggregate storage bins The
" exempt diesel storage tank (I-ES2) are also on -site This tank is used to fuel the facility's mix trucks, but also the
front end loader This tank is located outside near the aggregate storage bins
h
The facility operates a natural gas -fired water heater (1-01) used to heat process water mainly in the winter It is
exempt from NC permitting This heater is located in a building and adjacent to the truck loadout area
The facility currently does not operate an emergency generator or have any diesel water pumps

S1
S
ry
Y s
�r
a �
Permit Conditions
Condition A 2 contains the 2D 0202 requirements, which include submitting an emissions inventory at least 90
days prior to the expiration date of the permit The facility's permit expires on December 31, 2021
}� Compliance is anticipated Hartley indicated during the inspection that they would like to keep their Air Permit
'with the new NCDAQ exemption and registration rules
i° iro
Condition A 3 contains the 2D 0515 requirements associated with particulates from miscellaneous industrial
,,,,processes The allowable PM emission rate for silo S-1 and S-2 are each 413 lb PM/hr The allowable PM
, emission rate for the M-1 and H-I are 61 9 lb PM/hr and 41 5 lb PM/hr, respectively With the bagfilters
having a control efficiency of 99%, calculated emissions (taken from Mr Leo Governale, WSRO-DAQ Permit
r r,Engineer, review dated January 27, 2014) from S-I is 0 035 lbs PM/hr, S-2 is 0 31 lbs PM/hr, M-I is 4 56 lbs
,7 PM/hr, and 1 00 lbs PM/hr It appears all sources and corresponding controls are well maintained Compliance
OWrth 2D 0515 is indicated
'Condition A 5 pertains to regulation 2D 0535 "Notification Requirement " The facility is to notify the DAQ
'director of any source with excess emissions that last for more than four hours and that result from a
F' malfunction, a breakdown of process, or any other abnormal conditions No notifications have been received
'4 since the last inspection and Mr Hartley was unaware of any issues Compliance is indicated
Condition A 6 (21) 0540) concerns the "Fugitive Dust Control Requirement " DAQ personnel observed no
46gitive dust emissions near the facility boundary and no complaints have been received, indicating likely
� ycompliance The facility's access points (roads) are generally a concrete surface and kept clean of material
The facility was not watering the aggregate stock piles during the inspection due to recent rains, and no dust
issues were observed No dust was observed off the plant's property
'Condition A 7 (213 0611) concerns the control of particulate emissions The facility is required to perform, at
r , minimum, an annual internal inspection of the bagfilters and record all maintenance activities in a logbook to be
made available to Division personnel The last internal inspection for both bagfilters was performed on July 8,
x S hk 2016 and a vacuum gauge was fixed The bags for C-1 were cleaned on April 28, 2016 The facility cleans all
' -_:bags one time and re -use (recycle) them, then they are discarded All of this information is documented in an
'in-house electronic maintenance log, which is connected to a server, which has back-up capabilities based on
'discussion with plant personnel Compliance is indicated
ry a
Condition A 8 (21) 1806) concerns the control of odorous emissions Mr Palmer detected no objectionable
,; h odors during the inspection nor have any complaints been received, indicating likely compliance
.t
t wj
Condition A 10 pertains to "Toxic Air Pollutant Emissions Limitation Requirement " Mr Governale wrote the
following in the latest permit review " A toxics review was triggered during the initial permit review for the
initial permit and the toxics expected were Arsenic, Beryllium, Cadmium, Chromic Acid (Soluble Chromate
Compounds), Manganese, and Nickel The table below lists the actual emissions of these pollutants based on
the reported CY 2012 Emissions Inventory and the facility's previously established operating schedule of 200
4

days/yr A toxics review is not triggered for this review and there are no changes to this regulation as part of
this renewal "
f{
r-
�`4' Pollutant `� TPER °
'�� ECY 2012 Aetual Emissions
Arsenic
0 016 lb/yr
001 lb/yr
Beryllium
0 28 lblyr
7 0 00086 lb1yr
Cadmium
0 37 lb/yr
0 000094 lblyr
Chromic Acid
0 013 lb/day
0 00155 lb/day
Manganese
0 63 lb/day
0 00071b1day
Nickel
0 13 lb/day
0 00018 lb/day
a� +r
i.
Compliance is demonstrated based 2012 and 2015 CY production (latest)
Y � k�
` steady during the last few years
.+ rx
MACT/GACT
Production has remained relatively
➢ This facility is not subject to any currently promulgated NESHAP regulation
�a y
3 ' �
w ➢ The Natural Gas -fired Hot Water Heater (I-ESI)is not subject to 40 CFR 63 Subpart JJJJJJ - National
Emission Standards for Hazardous Air Pollutants for Industrial, Commercial, and Institutional Boilers
Area Sources because it is gas -fired as defined under §63 11237 of this Subpart
NSPS
s�
➢ The exempt Natural Gas -fired Hot Water Heater (I -ES 1 ) is not subject to 40 CFR 60, Subpart Dc,
NT Standards of Performance for Small Industrial -Commercial -Institutional Steam Generating Units
because the heat input is less than 10 million Btu per hour
`4
➢ The I0,000-gallon Aboveground Diesel Fuel Storage Tank (ID No I-ES2) is not subject to 40 CFR Part
60 Subpart Kb, Standards of Performance for Volatile Organic Liquid Storage Vessels (Including
M Petroleum Liquid Storage Vessels) for Which Construction, Reconstruction, or Modification
�r Commenced After July 23, 1984, because this rule does not apply to storage tanks with capacities less
than 75 m} (approximately 19,813 gallons) that are used to store volatile organic liquids
Xermit Discussion
r
s , o The facility operates a total of six 300-1,000-gallon aboveground storage tanks used for additives in the
u concrete mix, which can be exempted under DAQ rules All of these tanks are located in a large steel
m storage container adjacent to aggregate storage bins and could be included on the "Insignificant 1
Exempt Activities" list during the next permit cycle
e The facility indicated during the inspection that they would like to keep their Air Permit
5

94 s
3 �
� r T'�r r "' �� a � +,�a�r � r^�t �r i stir., Y � ♦ ti i' > � r.t � i'x y � �` ,;� � �r f* '�, 4 �' � r ,
� �.� r� � r fat r r ir�4 0 'r'a1�' xn r%, ? � $"'ir �i � �r� � �� ��t �^R�t �, E '�#'+ r �`'�s3L' '' � � ✓y� �"}�as '' ��"' ° �i�
�t}� q;
b'„ ' Sr'�t��..xi t fti'� +ja t�,�r.`�+., t �:�t t era° z�3fz:if!.3'�,�s:� Sfj 5
ip -'The-facility has'three permit exemp# small natural-gas fired,space heaters in he ma�TMbuildingk(1 level)
r
6 whe"re�the,control,roorri is Located 'Each _heater has a�bu er rating ofy pproximat_e_ly 0-3 mz_llzon Btu/hr
xl3 T �T
"'{ r c • a-z�Y� 'U '-0
F�acility,,fWideoEmisszons (taken fromlatesttpermrt'revie`w,by-Mr Governale),`
` s - -
rtt5ra�,F..`..
"The lf6i owingrtable,,summSfiz_es;the>facility wide%ezi scions obtazned'Yfrorrz the submitted;G^Y 2012^,Emissions ;
f "4 f � .-. ~ � ,jT— � n mot-- f �
}Inventory The, actual-dhd -potential ,emisszons�-we�re� (calculated ,using the NCDENR ,Concrete<<Batch Plant
x 'k sr" s Y ^ 4`e ''1 7i. s S �Trs'�rt e 4 *.+� ., i ,4'� 4 d d _ �7 _ c 4 c-,.t * t `
Em�zs�sions;�Calc la orhSpreadyheet'W'Vis on"B?11 1512013 ased o thea eported t�otal7product1on of 26,053�85 E
,cubic yards) and tther emissibIfi for the %t' faF Gast fired #Wa_teK4Heater.,W6F6� tabulated ,uginghthe Natural,+,Gas
S,tC�ao"rnbfu"t�ti�o-rn',rE-+mt., _Fzsrsi—or'a s Cnailpc`usloas'rrtaoI'o�r,'S"?t-r`ear d�slieUf"a�tr, 7Re_i� vj„is�5+z4on,Lt' .in1iY 0/I0s812a 0N 1x 3 r ' asa.v su°b4 amG�i'ite*daP 'w'?��i" v=tha
3stta his ai nij'M lz"ca&
ti'o�° n �See
i4,"bM note,�regardng TitleV conxsideration
y F
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�a �u
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Y4012YActuff �
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� �- � �f ������ a� � �� ;
_jBefore Controls�and,t
XY }i.Y���„�
Patentral Cmzssians
eI q � �t �� 4
After Controls,and
�. Pollutant �
t ri
�.; -Em1ssionsr�-= s
c � -A�-�t
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6} 5
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.7,eff». wrMw
(tons/ r
t° ek6e p�'a,.Y y �q,,`e v?d
'St k `£ s �i" :_��'f
,s,
8 P%1 r9� r
e�ta�s/yr4)�
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—:,-„-..--m.-.='ir_-.-.�—••'m'-.�-a.-.2 Mr-i..--w.»....,.....
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,
%
PMfor 7Titl'e Vf (excludes,
-
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C.J...
FTYfi i..YT•�'rMt -fir., 1 Y �.�,'ri-'y, i.3. J. ..,�
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y '� Y r �—Y-29-„s
� __ TtaI'HAP�s§ , l
s T 9 Yyy E� �SYye
,0�7el91b/yr}
'"'[Yrw S ` i 71..5 r, ""
' 149 40 lb/yr -
f ;S' 7' it z',r
34 3 0 lblyr`
<
"
w
�
y ;
r Iffi hest HAP
0=37,�I1j/yr �Y
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— b768T60a1 AJ --
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- .
�18 60,�11?IyrilHexane]
"-
fi* Inclu_des onlyf emissiozis�'from the -Cement A4d Flyashr Stofa e`�Silos S;CE ni szonsafrom�the,Batcher and
- - -
�T3nick#Mix�,Qperattbntare notzincludedrfor'TitleaV,"appliicabilzty�,because emis§ions,-from`'theselsources,aare
} uncontrolled not;emitted=from.a pYointl source)kandldfe,considerddvfugitive{asydetet imeMyhthO EPA
Efhigsions, from-jsandgani d ` aggregateljhAndli#g, are fic6ntroll-6d' ands arOi also, (considered fugitive
aA�dditzonally;'EPA conszders,Bagfilterswon FSilos`�toobe�iritegial,Viand,so�Title'V�potential eamzsstons for",this f
IIr faczlity�can�`ibe,eyaluateddafter controls lh'eithet case, this faczlrty's classification is,smdlI
_-;Ni ,..•- -...� ,'F .,
W
G
�
aye,
}Buringr,the,August 5, 2016, Mr Hartley commented*that
s'1 1'�.f' i L."r�-,y A
production"for 2015'rwaSrapproximately 25,000 cubic t
- s .� iiI •C�.,_ ts` ,. - u rr r.',..
yards`of (concrete iand3,the facility is off track for
i
,y ' ° yr- [ .,.+ -? K� 7 1r; .. y s_ I �_
,producing�abo_ut ,30 000) ubic yards, of (concrete :for CY2016
7
f"m^ ` ]-
[ .ctV i
�`�accordingttoMrr1Hartley�'
1k " / hT; r � "�. �r •y
c f r ; ��� �� � n�sr f i�1
rs � �µ� to e,. n. f¢ ;,.•E�e.� -• 74 � •+
� r
7}Compliance�History=(IastAfve yeai-s)
a`�
j 4P �� � �ti �yt `k
' � �� �� ati�.c� r �+'���� �" .•r f � f�r ^
lie
�,. �� 1 ��" � `*yt�` ¢ -� r y t LL Ys i
�
Y NowNohce`of Deficiency or N6tice,of Vi '16ti" "has beenhz ued��to tliis'perrriitted facility Nokcomplaints were
3 �logged�agains�t;this, facility,
rr•-
_T
ti
i
F
1
1

1 4y
ti
1
F 2 'Conclusion
>� Based on observations and record reviews made during the August 5, 2016 inspection by Mr Palmer, the
< facility appears to be operating in compliance with all applicable air quality regulations and standards
r,
{ t
7

Compliance Ins ectlon Report
Permit NCG140391
SOC
County Guilford
Region Winston Salem
Contact Person Dickey Potts
Directions to Facility
System Classifications
Primary ORC
Secondary ORC(s)
On Site Re prosentative(s)
Related Permits
Effective 07/01/16 Expiration 06/30/17 Owner Hartleys Ready Mix Concrete
Effective Expiration Facility Hartley Ready Mix Concrete Mfg Inc
1040 Boulder Rd
Inspection Date 0810512016
Primary Inspector Blair Palmer
Secondary Inspector(s)
Title
Entry Time 08 55AM
Certification
Greensboro NC 27409
Exit Time 11 30AM
Phone [phone]
Phone
Phone [phone]
Reason for Inspection Routine Inspection Type Compliance Evaluation
Permit Inspection Type Ready Mix Concrete 5tormwaterNVastewaler Discharge COC
Facility Status ❑ Compliant Not Compliant
Question Areas
Storm water
(See attachment summary)
Page 1

Permit NCG140391 Owner Facility Hartleys Ready Mix Concrete
Inspection Date 08/05/2016 Inspection Type Compliance Evaluatson Reason for Visit Routine
Inspection Summary
The facility s diesel -fired tank is double walled The facility s AST are located in a large steel shipping container and the the
container appeared to be in good condition The facility's 1 outfall is located at coordinates 36 0615 N -79 937 W and
approximately 40 feet west of the facilty s 1 retention pond All stormwater and wastewater flows into the retention pond
The pond had a greendish color and there didn't appear to be any problems with the pond with the visible piping appearing
to be in good condition The facility does agood job of keeping the premises clean including the retention pond The grass
is routinely mowed and there was no trees and shrubs etc growing in or in close proximity The facility s two small truck
cleanout basins appeared to be in ok-good condition and conisted of earthen birms Mr Hartley stated that he hadn't had
to clean out the small basin and no pumping of water is used form the basin the water evaporates All issues discussed
under the "Questions" section of BIMS for this facility (NCG140391) will be forwarded and follow up upon by Mr Glen White
of the WSRO DEMLR section
Page 2

Permit NCG140391
Owner Facility Hartleys Ready Mix Concrete
Inspection Date 08105/2016
Analytical Monitorinq
Has the facility conducted its Analytical monitoring?
inspection Type Compliance Evaluation
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas?
Reason for Visit Routine
Yes No NA NE
❑■❑❑
❑ ❑ E ❑
Comment All vehicle maintenance is performed at the facilitv's Winston-Salem location No more than 55
gallons of motor oil is used per month The facility's stormwater and wastewater is comin Iq ed,
so quarterly monitoring is required The facility has only sampled(partly) on 515116 with only the
ph and total duration recorded LNo TSS, SS,and TPH was analyzed The facility was unaware
that reporting of the required sampling is to be sent to Raleigh
Permit and Outfalls Yes No NA NE
# Is a copy of the Permit and the Certificate of Coverage available at the site? 0 ❑ ❑ ❑
# Were all outfalls observed during the inspection? 0 ❑ ❑ ❑
# If the facility has representative outfall status is it properly documented by the Division? ❑ ❑ 0 ❑
# Has the facility evaluated all illicit (non stormwater) discharges? E ❑ ❑ ❑
Comment The facilitv's Dermit exDiration has been extended and it will exDire on 6/30/17 COC is current
Mr Palmer did not find any -evidence of any aterial an/or water Leaving the propoy_othern than
designated outfall The facility only has one outfall at the current time Mr Palmer observed
water discharging at a slow rate from the facility's documented discharge point and it appeared
to be clear in color No other visible problems were noted
ualitative Monitoring Yes No NA NE
Has the facility conducted its Qualitative Monitoring semi annually? ❑ N ❑ ❑
Comment The facility has conducted 1 monitonna sample since the facility's Dian was uodated accordin
in September 2015 No qualitative monitoring has been conducted since the plan was updated
in September 2015 The facility is required to monitor on a semi—annual basis
Stormwater Pollution Prevention Plan Yes No NA NE
Does the site have a Stormwater Pollution Prevention Plan? 0 Cl ❑ ❑
# Does the Plan include a General Location (USGS) map?
0 ❑
❑ ❑
# Does the Plan include a Narrative Description of Practices ?
❑
❑ ❑
# Does the Plan include a detailed site map including outfall locations and drainage areas?
❑
❑ ❑
# Does the Plan include a list of significant spills occurring during the past 3 years?
E ❑
❑ ❑
# Has the facility evaluated feasible alternatives to current practices?
0 ❑
❑ ❑
# Does the facility provide all necessary secondary containment?
0 ❑
❑ ❑
# Does the Plan include a BMP summary?
■ ❑
❑ ❑
# Does the Plan include a Spill Prevention and Response Plan (SPRP)?
0 ❑
❑ ❑
Page 3

Permit NCG140391 Owner Facility Hartleys Ready Mix Concrete
Inspection Date 0810512016 Inspection Type Compliance Evaluation Reason for Visit Routine
Stormwater Pollution Prevention Plan Yes No NA NE
# Does the Plan include a Preventative Maintenance and Good Housekeeping Plan? 0 ❑ ❑ ❑
# Does the facility provide and document Employee Training? ❑ N ❑ ❑
# Does the Plan Include a list of Responsible Party(s)? ❑ S ❑ ❑
# Is the Plan reviewed and updated annually? 0 ❑ ❑ ❑
# Does the Plan include a Stormwater Facility Inspection Program? 0 ❑ ❑ ❑
Has the Stormwater Pollution Prevention Plan been Implemented? ❑ 0 ❑ ❑
Comment Facilitv did not have anv signatures for "Responsible Partv" Daae There was also no
documented employee training Mr Palmer advised Mr Hartley that these items need to be
addressed The facility has done only one inspection (documented) for all the areas outlined in
their plan _ This was documented on Ma_y_5, 2016__It should be noted that the facility met with
personnel from the City of Greensboro and NCDEQ DEMLR as a result of an inspection
conducted on_7/29/2015 (see source file for more info) The facility's SWPPP was updated on
9/12/2015 however, no monitoring had taken place until May 2016 It appears that the facility
uses a biodegradeable detergent for truck pre and post wash off This outlined as DI-1 and DI-2,
as oulined in their September 2015 map for their SPPP (see also copy in file)
Page 4

E)wC�
S Iv C e
Structural Stormwater BMP Inspection Form
Hartley Ready Mix Concrete
Greensboro NC
Completed by ,/4
_ - t -- -~
BMP
Date of
Anspectlon
Observations
Action Needed
Action Complete
Initials of
Observer
Settling Basin
<-- S
V1 t4'LJ .
^^-�
`L F-•'•t
�
Wash Out Pits
�`S`��O
I S�r�kS
5}tck r�►'ne.�e
�r"`•liJ ��
�µfi
DI #1
S — J `
DI #2
LP
C /V—
7-� H
DI #3
S - S - t &
IN 0 ,r\ C-
TR R
DI #4
5 5- iG
PLGV%X-
rQVW_
#/\C I-c
Ti4
Retention Pond
_S -
t-0-- rF'e
Y) Volh
O r-e
By this signature, I certify that this report is accurate and complete to the best of my knowledge
Signature
Date
Hartley Ready Mix Concrete
Greensboro, NC
Stormwater Pollution Prevention Plan

Dry -Weather Non-Stormwater Discharge Assessment
Hartley Ready Mix Concrete
Greensboro' NC
Completed By:��� W ,�
0,
Title: _�z..��
Date ti
Observation
Outfall observed
(Identifyas on site
map)
Method
(72 Hours of No
Rainfall)
Results from Observations
Potential Sources of Discharge
Initials of
Observer
y42�_ to
��errt �4n
L4C' oe ten 4-14�c7s,d-
By this signature, I certify that this report Is accurate and complete to the best of my knowledge
Signature:
Date:
Hartley Ready Mix Concrete 5tormwater Pollution Prevention Plan
Greensboro, NC

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO NCG140000
CERTIFICATE OF CO ERAGE NO NCG14 _ _
FACILITY NAME k �r� ,07*
PERSON COLLECTING SAMPLES J� 12 r v
CERTIFIED LABORATORY Lab #
Lab #
OPTIONAL INFO
Part A Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR 2A_�\
SAMPLING PERIO J ly-December January -June
COUNTY t: r
PHONE NO 3( -3 V `75S'
ADD TO LISTSERVE? DYES ffNO EMAIL
DISCHARGING TO CLASS [:]SA ❑HQW ❑PNA ❑Trout [:]Other.
No
Date Sampfe
CollectedOutfall
(mo/dd/yr OR
NO FLOW]
pH
(Standard
Units)
TSS
(mg/LI
Event
Duration
{minutes)
Total
Rainfall
nfin)
In Tier 2
Monthly
Monitoring?
Win)
# of Months In Tier
2 Sampling
Soo
-
-
�y6,-9
"� L/
G -! i+
< 4�1�
i(
/G/
.rY.
•
' If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here Please make sure to mark the sample period above
z If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range
3 TSS benchmark values are 100 mg/f, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/I
For each sampled measurable storm event the total precipitation must be recorded using data from an on site rain gauge
Permit Date 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Energy, Mineral &
Land Resources
ENVIRONMENTAL QUALITY
July 28, 2016
CERTIFIED MAIL 47015 0640 0005 8164 4467
RETURN RECEIPT REQUESTED
Chad Hartley, President
Hartley Ready Mix Concrete
P O Box 1719
Welcome, NC 27374
Subject NOTICE OF DEFICIENCY
NOV-2016-PC-0404
Permit No NCG 140391
Hartley Ready Mix Concrete Mfg, Inc
Guilford County
Dear Mr Hartley
PAT McCRORY
Governor
DONALD R VAN DER VAART
Secretary
TRACY DAVIS
Director
On August 5, 2016 Blair Palmer, Multi -Media Inspector with the North Carolina Department of
Environmental Quality, visited the facility located at 1040 Boulder Road in Greensboro, to
conduct a compliance inspection as required by your industrial stormwater permit
I his facility is covered under General Permit No NCG 140391 which allows the discharge of
stormwater point source discharges associated with activities primarily crigaged in production of
Ready -Mixed Concrete [SIC 3273] and like activities to the surface waters of North Carolina
The following observations and violations were noted during NCDFQ's Multi -Media inspection
and subsequent file review and were verified by DEMLR's review
Stormwater Pollution Prevention Plan (SPPP)
I he General Permit NCG 140000, Part III, No 1 thru 10 requires the permittee to
develop and implement a SPPP that includes all of the information required in No 1 thru
10 Inspection revealed that thus facility has developed a Stormwater Pollution
Prevention Plan I he plan was prepared by Jewel Engineering 9/12/15 following
Violations received after a site inspection conducted by NCDEQ and City of Greensboro
Water Resources Department The SPPP is well prepared and complete but Hartley has
not provided and documented annual training as required The responsible party has not
signed off on certifications as required The SPPP will need to by reviewed and signed
off annually as required Those certifications were provided in the plan prepared in 2015
State of North Carolina I EmlronmeritalQuality I Ent,rgy MincraldndLandResourcLS
Winston Salem Regional Office 1 450 Manes MITE Road Suite 300 1 Winston Shccm NC 27103
336 776 9800

2 Qualitative Monitoring)
General Permit NCG 140000, Part IV Section C requires the facility to conduct
qualitative monitoring twice per year following the established guidelines The facility
has not been monitoring per requirements Monitoring must be completed twice annually
and records must be kept with the SPPP for a minimum of five (5) years
3 Analytical Monitoring)
General Permit NCG 140000, Part IV Section A & I able 7 requires the facility to
conduct analytical monitoring twice annually at each of the facilities stormwater outfalls
and quarterly where stormwater and process wastewater are comingled In this case, the
facility has one stormwater outfall below the wet pond that produces a comingled
discharge Only onf, analytical sampling has been performed It was conducted on
5/5/16 and did not include required parameters for 1 SS, SS, and TPH as identified in the
permit Quarterly monitoring is required for this facility Results are required to be sent
to
NCDEQ's Stormwater Permitting Unit
1612 Mail Service Center
Raleigh, NC 27699-1612
Required Response
Accordingly, you are directed to respond to this letter in writing within 30 calendar days of
receipt of this Notice Your response should outline how the violations will be addressed and
should be sent to this office at the letterhead address and include the following
Stormwater Pollution Prevention Plan (SPPP) should include annual stormwater training
for all employees that work outside and have exposure to stormwater including all drivers
and the personnel running the plant on a daily basis Document training with pen/ink
signatures and keep a sign in sheet for in the SPPP Responsible Party Certification must
be signed and updated annually Go through the SPPP at least once a year and mark up
any changes to the facility, operating procedures, personnel, etc Sign off with a revision
note for annual revision
2 Begin Qualitative Monitoring and provide twice annually Keep records in the SPPP
binder This may be conducted at the same time that analytical samples are taken
3 Begin Analytical Monitoring per permit requirements defined in Part IV, Table 7
Monitoring will be required to be conducted quarterly since discharge is comingled
stormwater and process wastewater Keep records in SPPP and maintain for five (5) year
minimum
State of North Carolina I Environmental Quality I Energy Mineral and Land Resources
Winston Salem Regional Office 1450 Hanes Mill Road Suite 300 1 Winston-Salem NC 27103
336 776 9800

Thank you for your attention to this matter This Office is considering sending a
recommendation for enforcement to the Director of the DEMLR (Division of Energy, Minerals,
& Land Resources) regarding these issues and any future/continued violations that may be
encountered This office requires that the violations, as detailed above, be abated
immediately and properly resolved Environmental damage and/or failure to secure proper
authorizations have been documented on the subject tract as stated above Your efforts to
undertake activities to bring the subject site back into compliance is not an admission, rather it is
an action that must be taken in order to begin to resolve ongoing environmental issues
Pursuant to G S 143-215 6A, these violations and any future violations are subject to a civil
penalty assessment of up to a maximum of $25,000 00 per day for each violation Your
above -mentioned response to this correspondence, the degree and extent of harm to the
environment and the duration and gravity of the violation(s) will be considered in any civil
penalty assessment process that may occur Should you have any questions regarding these
matters, please contact Glen White at [phone]
Sincerely,
Matthew E Gantt, P L
Regional Engineer
Land Quality Section
Winston-Salem Regional Office
Enclosures Inspection Report
cc DEMLR - WSRO
Bradley Bennet — DEMLR --- Stormwater Permitting Unit
State of North Carolina I Environmental Quality I Energy Mlne4 and Land Resources
Winston Salem Regional Oftice 1 450 Hanes Mill Road Suite 300 1 Wanton Salem, NC 27103
336 776 9800

&C,%4f—
Posi
Here
IVC( 1qu54c
• Complete items 1, 2, and 3 Also complete A S ature
Item 4 if Restricted Delivery is desired x
■ Print your name and address on the reverse
so that we can return the card to you g eroe y (Pnnte
■ Attach this card to the back of the mailpiece
or on the front if space permits
1 -4rticle Addressed to D Is deLvery address dif
If YES enter delivery
Chad Hartley, President
Hartley Ready Mix Concrete
PO Box 1719
Welcome,�NC 27374
ffoV- 2c)1U, Vic.- OLIOLi
Name) C re of C
r
sre from item 1 ❑ Yes
add ess below 60
Y-zz &
3 Seoce Type
13 Certified Mad © 9#ess Mall
0 Registered eturn Receipt for Merchandise
E7 Insured Mail ❑ C O D
c G _ j U 0 IQ + 4 Restricted Delivery? {Extra Fee) ❑ Yes
7 Artirla Numhar //��// LL / I
7015 0640 i 0005 8164 41467 /•Jf, c?f Te c,,e
PS Form a ruary ones c heturn e t _ t 59 02 M 1540

Compliance Inspection Report
Permit NCG140391 Effective 07/01/16
Expiration 06/30/17 Owner
Hartleys Ready Mix Concrete
SOC Effective
Expiration Facility
Hartley Ready Mix Concrete Mfg Inc
County Guilford
1040 Boulder Rd
Region Winston Salem
Greensboro NC 27409
Contact Person Dickey Potts
Title
Phone [phone]
Directions to Facility
System Classifications
Primary ORC
Certification
Phone
Secondary ORC(s)
On Site Representative(s)
Related Permits
Inspection Date 06/06/2016 Entry Time
08 55AM Exit Time
11 30AM
Primary Inspector Blair Palmer
Phone [phone]
Secondary Inspector(s)
Reason for Inspection Routine Inspection Type Compiiance Evaluation
Permit Inspection Type Ready Mix Concrete Stormwater/Wastewater Discharge COC
Facility Status ❑ Compliant ® Not Compliant
Question Areas
E Storm water
(See attachment summary)
Page 1

pest NCG140391 Owner Facility Hartleys Ready Mix Concrete
Inspection Date 0810512016 Inspection Type Compliance Evaluation Reason for Visit Routine
Inspection Summary
The facility s diesel Bred tank Is double walled The facility s AST are located In a large steel shipping container and the the
container appeared to be In good condition The facility s 1 outfall Is located at coordinates 36 0615 N -79 937 W and
approximately 40 feet west of the facllty s 1 retention pond All stormwater and wastewater flows Into the retention pond
The pond had a greendlsh color and there ddn t appear to be any problems with the pond with the visible piping appearing
to be In good condition The facility does agood lob of keeping the premises clean Including the retention pond The grass
Is routinely mowed and there was no trees and shrubs etc growing In or In close proximity The facility s two small truck
cleanout basins appeared to be In ok good condition and conlsted of earthen berms Mr Hartley stated that he hadn t had
to clean out the small basin and no pumping of water Is used form the basin the water evaporates All Issues discussed
under the Questions sectlon of BIMS for this facility (NCG140391) will be forwarded and follow up upon by Mr Glen White
of the WSRO DEMLR section
Page 2

Permit NCG140391
Inspection Date 08/05/2016
Analytical Monitoring
Has the facility conducted its Analytical monitoring?
Owner Facility Hartleys Ready Mix Concrete
Inspection Type compliance Evaluation Reason for Visit Routine
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas?
Yes No NA NE
❑■❑❑
❑❑■❑
Comment All vehicle maintenance is performed at the facility s Winston-Salem location No more than 55
-gallons of motor oil is used per month The facility's stormwater and wastewater is comingied,
so quarterly monitoring is required The facility has only sampled (partly) on 515116, with only the
ph and total duration recorded , No TSS, SS,and TPH was analyzed The facility was unaware
that reporting of the required sampling is to be sent to Raleigh
Permit and Outfalls Yes No NA NE
# Is a copy of the Permit and the Certificate of Coverage available at the site? 0 ❑ ❑ ❑
# Were all outfalls observed during the inspection? N ❑ ❑ ❑
# If the facility has representative outfall status is it pfopedy documented by the Division?
# Has the facility evaluated all illicit (non stormwater) discharges?
❑ ❑ E ❑
1111 ❑
Comment The facility s permit expiration has been extended and it will expire on 6130117 COC is current
Mr Palmer did not find any evidence of any material an/or water leaving the property othern than
designated outfall The facility only has one outfall at the current time Mr Palmer observed
water discharging (at a slow rate) from the facility s documented discharge point and it appeared
to be clear in color No other visible problems were noted
Qualitative Monitoring Yes No NA NE
Has the facility conducted its Qualitative Monitoring semi annually? ❑ N ❑ ❑
Comment The facility has conducted 1 monitoring sample since the facilitvs plan was undated according!
in September 2015 No qualitative monitoring has been conducted since the plan was updated
in September 2015 The facility is required to monitor on a semi-annual basis
Stormwater Pollution Prevention Plan Yes No NA NE
Does the site have a Stormwater Pollution Prevention Plan? 0 ❑ ❑ ❑
# Does the Plan include a General Location (USGS) map?
0 ❑ ❑ ❑
# Does the Plan include a Narrative Description of Practices ?
0 ❑ ❑ ❑
# Does the Plan indude a detailed site map including outfall locations and drainage areas?
0 ❑ ❑ ❑
# Does the Plan include a list of significant spills occurring during the past 3 years?
0 ❑ ❑ ❑
# Has the facility evaluated feasible alternatives to current practices?
E ❑ ❑ ❑
# Does the facility provide all necessary secondary containment?
E ❑ ❑ ❑
# Does the Plan include a l3MP summary?
0 ❑ ❑ ❑
# Does the Plan include a Spill Prevention and Response Plan (SPRP)?
0 ❑ ❑ ❑
Page 3

Permit NCG140391 owner Facility Hartleys Ready Mix Concrete
Inspection Date 0810512016 Inspection Type Compliance Evaluation Reason for Visit Routine
Stormwater Pollution Prevention Plan
Yes No NA NE
# Does the Plan Include a Preventative Maintenance and Good Housekeeping Plan?
■ ❑ ❑ ❑
# Does the facility provide and document Employee Training?
❑ N ❑ ❑
# Does the Plan Include a list of Responsible Party(s)?
❑ ®❑ ❑
# Is the Plan reviewed and updated annually?
■ ❑ ❑ ❑
# Does the Plan include a Stormwater Facility Inspection Program?
0 ❑ ❑ ❑
Has the Stormwater Pollution Prevention Plan been Implemented?
❑ ®❑ ❑
Comment Facility did not have anv signatures for Resoonsible Partv" oaae There was also no
documented employee training Mr Palmer advised Mr Hartley that these items need to be
addressed The facility has done only one inspection (documented) for all the areas outlined in
their plan This was documented on May 5 2016 It should be noted that the facility met with
personnel from the City of Greensboro and NCDEQ DEMLR as a result of an inspection
conducted on 7/29/2015 (see source file for more info) The facility s SWPPP was updated on
9/12/2015 however, no monitoring had taken lace until May 2016 It appears that the facilit
uses a biode radeable detergent for truck pre and post wash off This outlined as DI-1 and DI 2
as oulined in their September 2015 map for their SPPP (see also copy in file)_
Page 4

City of Greensboro
� North Carolina
August 21, 2015
Chad and Christy Hartley
Hartley Ready Mix Concrete
PO Box 1719
Greensboro, NC 27374
RE Industrial Compliance Inspection
Inspection location Hartley Ready Mix Concrete
1040 Boulder Road, Greensboro, NC
SW Permit # NCG140391
Dear Mr and Ms Hartley
On July 29, 2015 the City of Greensboro Stormwater Management Division completed an industrial
compliance inspection of Hartley Ready Mix Concrete Local regulations permit an inspection of
industrial facilities under authority granted by City of Greensboro Code of Ordinance Chapter 30
Article 12, Section 7 1 (C-5)
The inspection was performed by Debbie Shoff ner and Sherri Scalcione with the City of Greensboro
(Stormwater Division) and Sue White and Glen White with NCDENR (Division of Energy, Mineral, and
Land Resources) An additional meeting took place on August 18, 2015, which included Debbie
Shaffner Sue White, Glen White, Chad Hartley, and staff from Jewell Engineering
Based on the initial inspection and follow-up meeting, resolution of the following deficiencies must be
completed in order for Hartley Ready Mix Concrete to be in compliance with their issued NPDES
permit
Stormwater Pollution Prevention Plan/Spill Plan Review
Site Maps and SWP3
• Update all parts of the Stormwater Pollution Prevention Plan (SWPPP) per the NPDES permit
All areas required by your issued permit must be included in the plan This plan must be
updated on an annual basis
Spill Prevention and Response Plan
• Update the Spill Prevention and Response Plan This includes, but is not limited to records of
all spills and corrective actions taken to minimize environmental damage Keep records of
spills and spill responses for a minimum of five (5) years
Monitoring
• Perform all required monitoring The required monitoring per the NPDES permit is currently not
being performed This monitoring consists of bi-annual qualitative monitoring and quarterly
analytical monitoring Begin monitoring per the permit immediately, and maintain records in the
SWPPP plan binder If records are not maintained properly or benchmark results exceed
permit requirements, additional monitoring may be required Contact Glen White with
NCDENR if results exceed established limits
P 0 Box it 3b (,tor n,huzo V 27 102 it 36 %%�%%% Vr(F ia,boin w coy ( 3',0) 17 ; CIn (3181)} T11 -4 3 ' 3 01) 10
f ,

fr
Employee Training
• Routinely tram employees on stormwater requirements including spill response, proper
housekeeping practices, discharge prohibitions and wastewater discharge requirements
Keep all training records in the SWPPP
Site Inspection
Preventative Maintenance/Good Housekeeping
No deficiencies observed
Non-Stormwater Discharges
• Continue recently implemented procedures at the truck rinse area to minimize any pollutants
entering into the stormwater detention pond Document these procedures in the SWPPP
It has been determined that Hartley Ready Mix Concrete is non -compliant with its NPDES permit
Based on the above deficiencies, a follow-up inspection may be performed by the City of Greensboro
and/or the North Carolina Department of Environmental and Natural Resources (NCDENR) All plan
updates must be completed by September 30, 2015 Any penalties assessed against the City by the
State as a result of this non-compliance will be assessed against Hartley Ready Mix Concrete
If you have any questions concerning this inspection please contact me at [phone] or
Debbie Shoffner@greensboro-nc gov or Glen White at [phone] or Glen White@ncdenr gov
Sincerely,
Debbie Shoff ner, Water Quality Analyst
City of Greensboro, Water Resources Department
cc Sue White, N C Dept of Environment and Natural Resources
Glen White, N C Dept of Environment and Natural Resources
Peter Schneider, Water Quality Supervisor, City of Greensboro Stormwater
Sherri Scalcione, Water Quality Specialist, City of Greensboro Stormwater
Amy Black, Jewell Engineering Consultants
Industrial Inspection File
P 0 Buti 31 36 (,tct n,bow AC 27102 3136 gic,(_n,hoio n( eon �0)) 313 ( I'll (2 1�9) 1 11 # 333 6930

Compliance Inspection Report
Permit NCG140391 Effective 07/01/11 Expiration 06/30/16 Owner Harlleys Ready Mix Concrete
SOC Effective Expiration Facility Hartley Ready Mix Concrete Mfg Inc
County Guilford 1040 Boulder Rd
Region Winston Salem
Greensboro NC 27409
Contact Person Dickey Potts Title Phone [phone]
Directions to Facility
System Classifications
Primary ORC Certification Phone
Secondary ORC(s)
On Site Representatives)
Related Permits
Inspection Date 07/29/2015 Entry Time 09 OOAM Exit Time 11 OOAM
Primary Inspector Glen White Phone [phone]
Secondary Inspector(s)
Reason for Inspection Routine Inspection Type Compliance Evaluation
Permit Inspection Type Ready Mix Concrete StormwaterANastewater Discharge COC
Facility Status Compliant ❑ Not Compliant
Question Areas
Storm Water
(See attachment summary)
Page 1

Permit NCG140391 Owner Facility Hartleys Ready Mix Concrete
Inspection Date 07/29/2015 Inspection Type Compliance Evaluation Reason for Visit Routine
Inspection Summary
COG is a regulated authority See detailed report by pebble Shoffner City of Greensboro
Page 2

Permit NCG140391 owner Facility Hartleys Ready Mix Concrete
Inspection Date 07129/2015 Inspection Type Compliance Evaluation Reason for Visit Routine
Stormwater Pollution Prevention Plan
Yes No NA NE
Does the site have a Stormwater Pollution Prevention Plan?
0 ❑ ❑ ❑
# Does the Plan include a General Location (USGS) map?
E ❑ ❑ ❑
# Does the Plan Include a Narrative Description of Practices
0 ❑ ❑ ❑
# Does the Plan Include a detailed site map Including outfall locations and drainage areas'
E ❑ ❑ ❑
# Does the Plan include a list of significant spills occurring during the past 3 years?
❑ 0 ❑ ❑
# Has the facility evaluated feasible alternatives to current practices?
0 ❑ ❑ ❑
# Does the facility provide all necessary secondary containment?
N ❑ ❑ ❑
# Does the Plan include a 13MP summary?
E ❑ ❑ ❑
# Does the Plan Include a Spill Prevention and Response Plan (SPRP)?
❑ ❑ ❑
# Does the Plan include a Preventative Maintenance and Good Housekeeping Plan?
❑ ❑ ❑
# Does the facility provide and document Employee Training?
0 ❑ ❑ ❑
# Does the Plan include a list of Responsible Party(s)?
0 ❑ ❑ ❑
# Is the Plan reviewed and updated annually?
0 ❑ ❑ ❑
# Does the Plan include a Stormwater Facility Inspection Program?
❑ ❑ ❑
Has the Stormwater Pollution Prevention Plan been implemented?
❑ ❑ ❑
Comment (See Report by Debbie Shoffner, City of Greensboro
Qualitative Monitoring Yes No NA NE
Has the facility conducted its Qualitative Monitoring semi annually? ❑ ❑ ❑ ❑
Comment See report by Debbie Shoffner, City of Greensboro
Analytical Monitoring Yes No NA NE
Has the facility conducted its Analytical monitoring? 0 ❑ ❑ ❑
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ❑ E ❑ ❑
Comment See report by Debbie Shoffner, City of Greensboro
Permit and outfalls Yes No NA NE
# is a copy of the Permit and the Certificate of Coverage available at the site? E ❑ ❑ ❑
# Were all outfalls observed during the inspection? 0 ❑ ❑ ❑
# If the facility has representative cutfall status is it properly documented by the Division? N ❑ ❑ ❑
# Has the facility evaluated all illicit (non stormwater) discharges? N ❑ ❑ ❑
Comment See report by Debbie Shoffner, City of Greensboro
Page 3

f�
I;A
NC®ENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue
Governor
Mr Chad Hartley
Hartley Ready Mix Concrete Inc
PO Box 1719
Welcome North Carolina 27374
Dear Mr Hartley
Coleen H Sullins
Director
April 23 2010
61
Dee Freeman
____.Secretary
APR 2 9 2010 l
w€nstonSalem
Rsglonal Office
Subject General Permit No NCG14000Q
Hartley Ready Mix Concrete Mfg Inc
COC No NCG140391
Guilford County
In accordance with your application for a discharge permit and recent site inspection
performed by DWQ personnel on April 20 2010 we are forwarding herewith the subject certificate of
coverage (COC) 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)
This certificate of coverage is not transferable except after notice to the Division of Water
Quality The Division of Water Quality 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 Water Quality or permits required by the Division of Land
Resources, Coastal Area Managem 2nt Act or any other federal or local governmental permit that me-1
be required
Please be aware that the pond discharge from your facility consists of commingled wastewater
and stormwater and is subject t) the analytical monitoring requirements in Part II Section C of the
attached permit Analytical monitoring according to Section C shall be performed at least once
annually with qualitative monitoring performed semi annually in accordance with Section F
Any future construction installation or modification of wastewater treatment facilities
(including process wastewater rerycle systems) will require an Authorization to Construct (ATC) prior
to construction per 15A NCAC 2H 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 ]
If you have any questions concer g this permit please contact Cory Larsen at [phone] or
cory larsen@ncdenr gov
Sincerely,
OR1G4INAL(EN p CK� 6Y
for Coleen H Sullins
Wetlands and stormwater Branch One
1617 Mail Service Center Raleigh North Carom 27699 1617 NOrtllCarollna
Location 512 N Salisbury St Raleigh North Carolina 27644 tll�����
��
Phone [phone] FAX [phone] Customer Service 1-877-623 6748 `Lid
Internet www ncwaterquality org
An Equal opportunity 4 Affirmat€ve Action Employer

Mr Chad Hartley
flartley Ready Mix Concrete, Me
NCG 140391
cc Winston-Salem Regional Office Corey Basinger
Central Files
Stormwater Permitting Unit Files
Mr Paul Blanchard Deep River Engineering 110 Scott Ave Sprite 3 High Point NC 27262

r
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NO NCG140000
CERTIFICATE OF COVERAGE No NCG140391
COMMINGLED 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,
HARTLEY READY MIX CONCRETE, INC
is hereby authorized to discharge stormwater and process wastewater from a facility located at
Hartley Ready Mix Concrete Mfg , Inc
1040 Boulder Road
Gieensboro, NC
Guilford County
to receiving waters designated as the East Fork Deep River, a class WS-IV water in the Cape
Feat River Basin, in accordance with the effluent limitations, monitoixng tequiiements, and other
conditions set forth in Parts I, II, III, IV, V, and VI of General Permit No NCG 140000 as
attached
This certificate of coverage shall become effective April 23, 2010
This Certificate of Coverage shall remain in effect for the duration of the General Permit
Signed this day, the 23r`' of April, 2010
0MINAL SIGNED BY
fbi Coleen H Sullins, Director
Division of Water Quality
By the Authority of the Environmental Management Commission

LOCATION MAP-0
1
/
NCG140391
Il;r'rJ Scale 1 20,OC O
'!—r,},J I�vx fla ,•� .a !�_s`�f1���/f+�'jfy • Q� + 9wrl d�
� it � if '�� � a-r��--�1....J�j�1l �,PL'���(r � bA� d � • ••+• g` ��-(�+ t r
Oro] jjv�n
ys
ry W:1't rlif'j'�'7 r r^�� �� �---' •a ���r f/•�r+'�f, �� ~ \ f ,h��
Sir
^-,,,�✓r�� tr �y✓S `¢¢ i li I � I i .[y�lti 1 } 13 �i. y'r r
I��'i
'�%r e r r►` �,; Ya \ t
t � ` l i rt a n I�ti � �=d�] I _� ar•._....»3'�'�` J ` �':��c.� fir, l "--
. Hartley Ready Mix Concrete Mfg Inc
,\ } � r; f � �� r•r�-���r ''-��� i r-e �./ % ��,�ti,`�
r
/so
-
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bJ r 'Zr41
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Hartley Concrete, Inc.
Hartley Ready Mix Concrete Mfg. Inc.
Lab bade 360 03' 39" N
Longitude 790 56' 09" W
County Gui l ford
Receimng Stream East Fork Deep River
Stream Class V/S-]V*
Sub -basin 03-06-08 (Cape Fear River Basin)
J
Facility Lor-atton

Larsen, Cory
From Pickle Ken
Sant Thursday April 22 2010 9 55 AM
To Basinger Corey Larsen Cory
Cc Georgoulias Bethany Bennett Bradley Jones Jennifer
Subject RE Hartley Concrete Site Vint
Cory
Ok with me I'll sign based on reported evidence of good housekeeping, and based on the expectation of no
wastewater discharge (from the ponds) , and therefore no expectation of pH issues, since there's no expectation of any
wastewater discharges
Obviously, there must be other site stormwater discharges, or we wouldn't be issuing NCG14 at all do I understand site
conditions correctly?
Sorry to be late in replying, I've been out of the office Tues & Wed
Corey
FYI, we are hearing from WIRO an expressed need to have BMPs required for NCG14 permittees on their stormwater
discharges As you know, we don't often have Bli specifically required in the NPDES stormwater program But
WIRO's observation of concrete sites is that they are full of cement dust, sand, rock flour, sediments, etc And that the
stormwater runoff carries such materials They're unhappy with the lack of protection that NCG14 offers in this regard
They have particular concern wrt Primary Nursery Areas that might be blanketed over with these sediments thereby
damaging the function of these particularly sensitive receiving waters Similar response to observed turbidity in on site
wet detention basins at these sites (although, the only in -hand measurement of TSS from WIRO was in the single digits,
or teens — concurrent with some observed, but unmeasured turbidity, I believe )
Another aspect of the WIRO concern on this point is that even though many of their concrete sites are equipped with
wet detention basins by virtue of the coastal rules (2H 1000 rules), they fear the pass through of these pollutants, and
they're concerned about lots of sedimentation in those BMPs, thereby reducing their effectiveness and further
increasing the risk of pass through
I know Linda Willis, Kelly Johnson, and Georgette Scott in WIRO are concerned about this, and I believe Rick Shiver is
too
Have you guys in WSRO observed/considered this aspect of the stormwater runoff from concrete sites? Opinions?
Comments? Problems?
Ken
From Basinger, Corey
Sent Tuesday, April 20, 2010 2 20 PM
To Larsen, Cory, Pickle, Ken
Subject RE Hartley Concrete Site Visit
That pretty much sums it up
Very well maintained site Best I've seen in the WS region
Corey Basinger, Environmental Engineer

Corey Basinger@ncdenr gov
NC DENR Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
[phone]
Fax [phone]
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
From Larsen, Cory
Sent Tuesday, April 20, 2010 2 17 PM
To Pickle, Ken
Cc Basinger, Corey
Subject Hartley Concrete Site Visit
Ken,
Corey B was out to this site today and we spoke on the phone about what he observed Attached are some photos of
the wash pits and pond Overall, he said this is the cleanest, best maintained concrete facility he's seen He saw no
evidence of discharge from the wash pits (five in total) and doubted there's much infiltration occurring The pits are
regularly dipped out and the material is recovered and sold/disposed offsite Runoff from the excavated material drains
back to the pits The pond was also in relatively good shape and the outlet looked clean and vegetation showed no signs
of damage No sediment or concrete past the pond
He did not feel any pH adjustment would be necessary at this point in time He recommends we get them permitted
and let them monitor but does not anticipate problems since they seem to be proactive at addressing issues at their
facilities So I say we go ahead and issue the permit Let me know if you concur and I'll get it prepared for your
signature
Corey — feel free to correct me if I've misinterpreted anything
Cory

Larsen Cory
From Larsen Cory
sent Tuesday Apnl 13 2010 12 50 PM
To Deep River Engineering PLLC.
Cc Pickle Ken Basinger Corey
Subject RE Hartley Concrete
Paul,
I have not heard back from you yet but want to let you know it is our desire to get this
application wrapped up shortly As you know, we ve had Hartley s application in-house since
5/29/09 and have invested a disproportionate amount on time and effort on Hartely to get the
facility up to speed and in compliance with DWQ regulations before permitting That said, we
typically return applications for lack of response or effort on the applicant's part to
provide necessary information, and we seem to be approaching that point Let s get the pH
adjustment system spec'd and installed so we can permit Please advise Mr Hartley
accordingly
Cory
-----Original Message-----
FromLarsen, Cory
Sent Thursday, March 18, 2010 11 38 AM
To 'Deep River Engineering, PLLC'
Cc Pickle, Ken
Subject RE Hartley Concrete
Paul,
This should get you on the right track http JJwww fortransinc com PHControl htm Another
option would be to come in and review plans of permitted facilities either here or at WSRO
Good luck
Cory
-----Original Message-----
FromDeep River Engineering, PLLC [mailto deeprivereng@northstate net]
Sent Friday, February 05, 2010 4 11 PM
To Larsen, Cory
Subject RE Hartley Concrete
Cory,
Sorry I was out of the office yesterday afternoon and part of this morning and massed your
call I appreciate you and Ken calling me this afternoon to discuss the need for an
automated system as required by DWQ I am going to research the systems we discussed so that
I can advise the client of this requirement
Paul Blanchard
Deep River Engineering, PLLC
[phone] office
(336 ) 887-5174 fax
> Paul,
> Are you available at 10am tomorrow to discuss Hartley with myself and
> Ken Pickle of DWQ? We will call you on your office line We'd like
> to discuss the details of the pH monitoring strategy and clear up some

> of the site details that I'm not completely familiar with and was not
> able to answer for Ken Let me know if that works
> Cory Larsen
> Environmental Engineer
> NCDENR I DWQ I Stormwater Permitting Unit
> 1617 Mail Service Center, Raleigh, NC 27699-1617
> 512 N Salisbury St, Raleigh, NC 27604
> Phone [phone]
> Fax [phone]
> 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
> -----original Message -----
> From Deep River Engineering, PLLC
> (mailto deeprivereng@northstate net]
> Sent Friday, January 08, 2010 5 16 PM
> To Larsen, Cory
> Subject RE Hartley Concrete
> Cory,
> I just wanted to drop a quick note and see if all required information
> has been received or if there is additional information needed for the
> Hartley Concrete job
> I hope the new year has started off well
> Paul R Blanchard, PE
> Deep River Engineering, PLLC
> [phone] office
> (336 ) 887-5174 fax
2

Larsen Cor
From Spencer Lee
Sent Thursday January 14 2010 2 56 PM
To Larsen Cory
Cc Basinger Carey Boyc Tom James MCRighl Kaufman Tammy
Subject RE Hartley Concrete NCG140391
We have no objection to the issuance of this general stormwater permit
Lee G Spencer, P E
Regional Engineer
Public Water Supply Section
NC DENR Winston-Salem Regional Office
585 Waughtown Street
Winston-Salem, NC 27107
Voice [phone]
FAX [phone]
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
From Larsen, Cory
Sent Wednesday, December 30, 2009 10 18 AM
To Spencer, Lee
Cc Basinger, Corey
Subject RE Hartley Concrete NCG140391
Le e,
Attached and below you'll find the application and relevant details for a ready -mix concrete facility with stormwater and
wastewater discharge to WS-IV waters in Guilford County Please advise within 30 days if DEH has any comments or
concerns that would prevent issuance of this stormwater permit Thank you
Cory Larsen
Environmental Engineer
NCDENR I DWQ j Stormwater Permitting Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
512 N Salisbury St, Raleigh, NC 27604
Phone [phone]
Fax [phone]
E-mail correspondence to and .ron this add-ess aid, ne sub7ect to the 00Lth Car011)a Public Pecords Law and may be
ai scloseLl to th1Ld paLt1PS
From Basinger, Corey
Sent Wednesday, December 30, 2009 8 01 AM
To Larsen, Cory
Subject RE Hartley Concrete
Proceed at will
Thanks
CB
1

Corey Basinger, Environmental Engineer
Corey Basinger@ncdenr gov
NC DENR Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
[phone]
Fax [phone]
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
From Larsen, Cory
Sent Monday, December 28, 2009 10 01 AM
To Basinger, Corey
Subject RE Hartley Concrete
Hi Corey,
We finally have acceptable results from Hartley Concrete after months of back -and forth with them Shall I proceed
with issuance of their COC? I feel comfortable with where they are at right now
Cory
From Larsen, Cory
Sent Tuesday, November 10, 2009 12 30 PM
To Larsen, Cory, 'deeprivereng@northstate net'
Cc Basinger, Corey
Subject RE Hartley Concrete
Paul,
We received the attached letter and results today pH is within our acceptable range and the proposed pH adjustment
strategy is reasonable Please move forward with the purchase of the specified pH meter and upon the next pond
discharge following a representative storm event, collect and analyze a discharge sample for both pH and TSS as
requested previously pH must be analyzed in the field, at the time of collection with the calibrated pH probe TSS must
be analyzed by your laboratory of choice Please submit those results as soon as possible and we'll likely be able to issue
the certificate of coverage
Thank you
Cory
From Larsen, Cory
Sent Thursday, September 03, 2009 11 32 AM
To 'deeprivereng@northstate net'
Cc Basinger, Corey
Subject Hartley Concrete
Paul,

I have reviewed your submittal received on August 21, 2009 It appears that the removal of settled solids improved the
T55 concentration but worsened pH results However, the sample was not collected during a discharge and thus, not
valid
I will wait for the results of your next valid sample before processing any further
Question if the owner purchases a pH meter as proposed, how would he use it to regulate pH of the discharge? What
action would be prompted by a pH reading of 9 or 10 on the meter? This information was not included with your
submittal
Cory Larsen
Environmental Engineer
NCDENR I DWQ I Stormwater Permitting Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
512 N Salisbury St, Raleigh, NC 27604
Phone [phone]
Fax [phone]
E-mail correspondence to and from this address may be sub}ect to the North Carolina Public Records Law and may be
disclosed to third parties
3

Larsen Cory
From Basinger Corey
Sent Wednesday December 30 2009 8 01 AM
To Larsen Cory
Subject RE Hartley Concrete
Proceed at will
Thanks
CB
Corey Basinger, Environmental Engineer
Corey Basinger@ncdenr gov
NC DENR Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
[phone]
Fax [phone]
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
From Larsen, Cory
Sent Monday, December 28, 2009 10 01 AM
To Basinger, Corey
Subject RE Hartley Concrete
Hi Corey,
We finally have acceptable results from Hartley Concrete after months of back -and -forth with them Shall I proceed
with issuance of their COU I feel comfortable with where they are at right now
Cory
From Larsen, Cory
Sent Tuesday, November 10, 2009 12 30 PM
To Larsen, Cory, 'deeprivereng@northstate net'
Cc Basinger, Corey
Subject RE Hartley Concrete
Paul,
We received the attached letter and results today pH is within our acceptable range and the proposed pH adjustment
strategy is reasonable Please move forward with the purchase of the specified pH meter and upon the next pond
discharge following a representative storm event, collect and analyze a discharge sample for both pH and TSS as
requested previously pH must be analyzed in the field, at the time of collection with the calibrated pH probe TSS must
be analyzed by your laboratory of choice Please submit those results as soon as possible and we'll likely be able to issue
the certificate of coverage
Thank you
Cory
From Larsen, Cory
Sent Thursday, September 03, 2009 1132 AM

To 'deep rivereng @north state net'
Cc Basinger, Corey
Subject Hartley Concrete
Paul,
I have reviewed your submittal received on August 21, 2009 It appears that the removal of settled solids improved the
TSS concentration but worsened pH results However, the sample was not collected during a discharge and thus, not
valid
I will wait for the results of your next valid sample before processing any further
Question if the owner purchases a pH meter as proposed, how would he use it to regulate pH of the discharge? What
action would be prompted by a pH reading of 9 or 10 on the meter? This information was not included with your
submittal
Cory Larsen
Environmental Engineer
NCDENR I DWQ I Stormwater Permitting Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
512 N Salisbury St, Raleigh, INC 27604
Phone [phone]
Fax [phone]
E-mail correspondence to and from this address may be subDect to the North Carolina Public Records Iaw and may be
disclosed to third Parties
r]

P
ENGINEERING, PLLC
110 Scott Avenue, Suite 3
High Point NC 27262
Phone [phone]
Fax [phone]
December 18 2009
Mr Cory Larsen Environmental Engineer
Stormwater Permitting Unit
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Re Request for Additional Information
General Permit COC No NCG 140391
Hartley Ready Mix Concrete, Inc
Guilford County
Dear Mr Larsen
Enclosed please find new test results for the I lartley Ready Mix Concrete site in Greensboro
on Boulder Road A sample was taken on December 9, 2009 when the pond began to
discharge
This sample was once again tested at Research and Analytical Laboratories Inc in
Kernersville North Carolina The pH was tested within the 15 minutes as required, and
yielded a result of 6 41 standard units The Total Settleable Solids test yielded a result of
5 75 mg/I. and Settleable Matter yielded a result of less than 0 1 ml/L
Pleast, advise if additional iniomiauun is requjied for this project Thank yea very much for
your time and consideration
c fi le
Smcerel pu T,
Paul R Blanc and P L

' 12/18/2009 13 30 336-9960326 R & A LABORATORIES PAGE 01/03
fksm h & ANA[Y11CA1
LA ORATORIES, INC
Amnly,a+i laroL.eb, rnr 3 VILU10
Date,
From
To
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Research & ,Analytical Laboratones, Inc
Telephone [phone]
Fax [phone]
Pages to Follow_,
Mailing Address Shipping Address
PO Box 473 106 Short Street
Kernersvflle, ITC 27285 Kernersville, NC 27284
PC) Bvx 473 • 106 Short Street 0 KornergVillP North CRrrknx 277R4 A 111juOOG aen+

• 12/18/2009 13 30 336--9960326 R & A LABORATORIES
rs, RESEARch Cal A►NA[yTiCA[
LAbORATWES INC.
Analytical/Process Consultations
HARTLEY READY MIX Date Sample Collected 12/09/09
P o BOX 1719 Dat(D Sample Received 1�/09/09
WELCOME, NC Date Sample Analyzed 12/09/09
Attn JTM OiMEY Date of Report 12/17/09
Analyses Performed by YJ
Lab Sample Number
--------------------
662669
Parameter Storet # Results
PH
(00400)
6
41
Std Vnit9
TSS
(00530)
5
75
rng/1
Sett matter
(00545)
E0
1
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Clients Sample Source
Number
Time Collected (Kra)
1040 ROULE)ER RD
D932
PO Box 473 106 Short Street + Kernersvllle NoMh Carolina R7284.386 95)8-2841 ► Fax [phone]E
www randelabs cam
PAGE 02/03

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ENGINEERING, PLLC
1 10 Scott AVC1111L SUM
High Point NC 27262
Phone [phone]
Fax [phone]
Mr Cory Larsen, Environmental Engineer
Stormwater Permitting Unit
Division of Water Quality
1617 Mail Service, Center
Raleigh, North Carolina 27699-1617
Re
Dear Mr Larsen
November 4 2009
Request for Additional Information
General Permit COC No NCG 140391
Hartley Ready Mix Concrete, Inc.
Guilford County
Enclosed please find new pH test results for the I lartley Ready Mix Concrete site in
Greensboro on Boulder Road The pond did not discharge until November 1 2009, since the
cleaning performed this summer 'I his is probably attributable to lowering the pond with the
work, moderate rainfall, and decreased concrete production due to the economic climate
This time the pH of the sample was evaluated at a different laboratory within 15 minutes, and
yielded a result of 6 05 standard units Once again, the sample fell within limits, however
this time on the base side of neutral
Per previous correspondences the question was asked as to how the pH would be regulated
when the owner tests the discharge with a pH meter Obviously, a sample falling within
limits would need no action If the pH were below 6 0, the pH could be raised by adding
soda ash or time If the pH were above 9 0, the pH could be lowered by adding diluted
sulfuric acid Any such chemical addition would need to be done per the products'
directions, but generally the product would be broadcast throughout the surface of the pond
for dispersion After any chemical addition, the pH would need to be rechecked to assure that
the adjustment left the water within limits Subsequent chemical adjustments might be
necessary, but once a log of uses were created with any given product the amount needed for
an adjustment would be known
Please advise if additional information is required for this project Thank you very much for
your time and consideration
Sincerely,
Paul R Blanchard, P E
e file

} 11/02/2009 00 54 3367209716 HRM CONCRETE PAGE 01
RESEARCk & ANA[yTICA1
E,
LAbORATO&S, INC.
Anal ticaWrocess Consultations
Hartley steady mix
1040 Boulder Road
Greensboro, NC
Date Sample Collected
Date sample Received
Date Sample analyzed
Date of Report
Analyses performed by
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11/02/09
11/02/09
11/02/09
11/02/09
TP
Lab Sample Number
--------------------
659671
----------------------------
Parameter Storet I Results
pH (00400) 6 05 SCd units
Clients Sample Source
Number
Time Collected (Hrs)
Greensboro Plant
1046
F Q Sax 473. 106 short Street • Kernersville North Carolina 27284. 336 996 2841 • Fax [phone]
www randalabs corn

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ENGINEERING, PLLC
1 10 Scott Avenuc Suitt 3
}high Paint NC 27262�
Phone [phone]
Fax [phone] , o ',
Novcmbei 4 2009y. t~�
Mr Cory Larsen, Environmental Engineer �G w
Stormwater Permitting Unit
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Re Request for Additional Information
General Permit COC No NC.G 140391
Hartley Ready Mix Concrete, Inc
Guilford County
Dear Mr Larsen
Enclosed please find new pH test results for the I lartley Ready Mix Concrete site in
Greensboro on Boulder Road I he pond did not discharge until November 1, 2009, sinec the
cleaning performed this summer 1 hv, is probably attributable to lowering the pond with the
work, moderate rainfall, and decreased concrete production due to the economic climate
This time the pH of the sample was evaluated at a different laboratory within 15 minutes, and
yielded a result of 6 05 standard units Once again, the sample fell within limits, however
this time on the base side of neutral
Per previous correspondences, the question was asked as to how the pH would be regulated
when the owner tests the discharge with a pH meter Obviously, a sample falling within
limits would need no action If the pH were below 6 0, the pH could be raised by adding
soda ash or lime If the pH were above 9 0, the pH could be lowered by adding diluted
sulfuric acid Any such chemical addition would need to be done per the products'
directions, but generally the product would be broadcast throughout the surface of the pond
for dispersion After any chemical addition, the pH would need to be rechecked to assure that
the adjustment left the water within limits Subsequent chemical adjustments might be
necessary, but once a log of uses were created v<ith any given product, the amount needed for
an adjustment would be known
Please advise if additional inforniation is required for this project Thank you very much for
your time and consideration
Sincerely,
-- -
Paul R Blanchard, P E
file

11/02/2009 00 54 3367209716 HRM CONCRETE PAGE 01
y RESEARA & ANAIYACA1
L
LAbORATORVS, INC.
Analytical/Process Consultations
Hartley Ready Mix Date Sample Collected
1040 Boulder Road Date Sample Received
Greensboro, NC Date Sample A-nalyzed
Date of Report
Analyses performed by
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--------------------
659671
n-----------------------avao--Q--aa-----ems
Parameter Storet I Results
PH (00400) 6 05 Std Units
Clients Sample Source
Number Greensboro Plant
Time Collected (Hr8) 1046
Pa Box 473 • 106 Short Street Kernerswlle North Carolina 27284. 336 996 2841 Fax [phone]
www randelabs corn

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Basinger, Corey
From Larsen Cory
Sent Tuesday, April 13, 2010 12 50 PM
To Deep River Engineering PLLC
Cc Pickle, Ken, Basinger, Corey
Subject RE Hartley Concrete
Paul,
I have not heard back from you yet but want to let you know it is our desire to get this
application wrapped up shortly As you know, we've had Hartley's application in-house since
5/29/09 and have invested a disproportionate amount on time and effort on Hartely to get the
facility up to speed and in compliance with DWQ regulations before permitting That said, we
typically return applications for lack of response or effort on the applicant's part to
provide necessary information, and we seem to be approaching that point Let's get the pH
adjustment system spec'd and installed so we can permit Please advise Mr Hartley
accordingly
Cory
-----Original Message-----
FromLarsen, Cory
Sent Thursday, March 18, 2010 11 38 AM
To 'Deep River Engineering, PLLC'
Cc Pickle, Ken
Subject RE Hartley Concrete
Paul,
This should get you on the right track http //www fortransinc com/PHControl htm Another
option would be to come in and review plans of permitted facilities either here or at WSRO
Good luck
Cory
-----Original Message -----
From Deep River Engineering, PLLC [mailto deeprivereng@northstate net]
Sent Friday, February 05, 2010 4 11 PM
To Larsen, Cory
Subject RE Hartley Concrete
Cory,
Sorry I was out of the office yesterday afternoon and part of this morning and missed your
call I appreciate you and Ken calling me this afternoon to discuss the need for an
automated system as required by DWQ I am going to research the systems we discussed so that
I can advise the client of this requirement
Paul Blanchard
Deep River Engineering, PLLC
[phone] office
(336 ) 887-5174 fax
> Paul,
1

> Are you available at 10am tomorrow to discuss Hartley with myself and
> Ken Pickle of DWQ? We will call you on your office line We'd like
> to discuss the details of the pH monitoring strategy and clear up some
> of the site details that I'm not completely familiar with and was not
> able to answer for Ken Let me know if that works
> Cory Larsen
> Environmental Engineer
> NCDENR I DWQ I Stormwater Permitting Unit
> 1617 Mail Service Center, Raleigh, NC 27699-1617
> 512 N Salisbury St, Raleigh, NC 27604
> Phone [phone]
> Fax [phone]
> 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
> -----Original Message -----
> From Deep River Engineering, PLLC
> [mailto deeprivereng@northstate net)
> Sent Friday, January 08, 2010 5 16 PM
> 7o Larsen, Cory
> Subject RE Hartley Concrete
> Cory,
> I just wanted to drop a quick note and see if all required information
> has been received or if there is additional information needed for the
> Hartley Concrete job
> I hope the new year has started off well
> Paul R Blanchard, PE
> Deep River Engineering, PLLC
> [phone] office
> (336 ) 887-5174 fax
z

Basinger, Corey
From Larsen Cory
Sent Tuesday, November 10, 2009 12 30 PM
To Larsen Cory, deeprivereng@northstate net
Cc Basinger, Corey
Subject RE Hartley Concrete
Attachments Hartley Submission 11 10 09 pdf
Paul,
We received the attached letter and results today pH is within our acceptable range and the proposed pH adjustment
strategy is reasonable Please move forward with the purchase of the specified pH meter and upon the next pond
discharge following a representative storm event, collect and analyze a discharge sample for both pH and TSS as
requested previously pH must be analyzed in the field, at the time of collection with the calibrated pH probe TSS must
be analyzed by your laboratory of choice Please submit those results as soon as possible and we'll likely be able to issue
the certificate of coverage
Thank you
Cory
From Larsen, Cory
Sent Thursday, September 03, 2009 11 32 AM
To 'deeprivereng@northstate net'
Cc Basinger, Corey
Subject Hartley Concrete
Paul,
I have reviewed your submittal received on August 21, 2009 It appears that the removal of settled solids improved the
TSS concentration but worsened pH results However, the sample was not collected during a discharge and thus, not
valid
I will wait for the results of your next valid sample before processing any further
Question if the owner purchases a pH meter as proposed, how would he use it to regulate pH of the discharge? What
action would be prompted by a pH reading of 9 or 10 on the meter? This information was not included with your
submittal
Cory Larsen
Environmental Engineer
NCDENR I DWQ j Stormwater Permitting Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
512 N Salisbury St, Raleigh, NC 27604
Phone [phone]
Fax [phone]
E-mail correspondence to and from this address may be sub}ect to the North Carolina Public Records Lad and may be
disclosed to third parties

ENGINEERING, PLLC
1 10 Scott A�,Criue Suite 3
High Point NC 27262
Phone [phone]
Fax [phone]
August 20 2009
Mr Cory Larsen, Environmental Engineer
Stormwater Permitting Unit
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Re Request for Additional Information
General Permit COC No NCG 140391
Hartley Ready Mix Concrete Inc
Guilford County
Dear Mr Larsen
Enclosed please find three revised sets of plans and calculations for the Hartley Ready Mix
Concrete site in Greensboro on Boulder Road Enclosed with this transmittal are the
following
Revised Plans of the existing site documenting site features, the wash pit, detention
pond features and the pH meter
Revised calculations for the detention pond
The site plan and calculations have been revised in response to the Additional Information
Request dated July 20, 2009 The specific comments and our responses to the July 20, 2009
correspondence are as follows
Comment The existing commingled storntwater/n,cistetii,titer pond should he restored to
its original design volume to provide adequate detention time and settling of solids
,Wads excavated from the pond should be stockpiled, until offsite disposal such that all
runoff drains buck to the treatment pond Please note that the pond'.s actual temporary
pool storage is the volume contained from the permanent pool elevation (PPF 879 25 ft
amsl) to the invert of the 8-inch orifice (TPE 880 70 t amyl) or approximately 10,207 CF
according to the siihmitted c.aluilations All vtorage above the TPE would dischaige too
quickly to allow settling of particulates and is not considered available vtorage
Response The owner has removed settled material from the site as requested to restore
the original design volume The material was handled onsite so that runoff would drain
back to the pond and the material was subsequently disposed of offsite In response to

the Temporary Pool statement, The Temporary Pool can be increased by installing a plate
over the riser with a smaller diameter orifice The plate would be made of the same
gauge and corrugation as the riser, and it can be attached with bolts For your review, [
am submitting calculations for a 2-mch orifice at elevation 880 70
2 Comment Immediate action must be taken tot egulate the pH of influent wastewater
andlor pond discharge water Please evaluate pH adjustment equipment and techniques
to ensure that pHis maintained between 6-9 standard units at the stormwalet discharge
outfall Response We are recommending the owner purchase pH testing equipment and
use it onsite model 850051 by SPER Scientific It should be easy for personnel to use,
and it should be accurate to within 0 20 units, per the manufacturer the device(s) should
be tested by sampling at the same time and location as the tab samples I he device(s) can
then be calibrated or replaced whenever the device(s) fail to agree with the results of
testing
3 Comment Following completion of the above action items, a slormwater discharge
sample should be collected during the first representative storm event (A reprevenlalive
storm event is one that measures greater than 0 1 inches of rainfall The time between
this storm event and the previous storm event measuring greater than 0 1 inches must he
at least 72 hours) and analyzed for pH and TM Note that pH must be analyzed within 15
minutes of collection for the result to be considered valid This requires field
measurement of pH with a properly calibrated pH meter The analytical results should be
submitted to .S"PU along with a vummary of remedial actions performed per Items 1 and
2 Response The pond has not discharged since the completion of the above work The
owner has had samples sent to the lab since the only measurable rainfall last week,
however we realize the results may not be valid The sample was taken trom the pond
since there was no flow Obviously, we cannot control rainfall events, and the owner is
making every reasonable effort to comply with the testing requirements I will fah the
results of a valid test to your office as soon as I receive them We will pursue a sample
when we have the next rainfall of 0 1 inches or more with discharge
Please advise it additional information is required for this pro3ect If it would be helpful to
schedule a meeting with you please let me know I hank you very much for your time and
consideration
Sincerely,
&12� fZ M „LQ)=
Paul R Blanchard, P E
c file

Rug 15 09 09.56p Tritest Clemmons 3367GG2314 p 1
TRITEST
Chain of Custody
)1 ( Ir Rrrnre Di wp Raletgr�, NG 27607
(9 9) 814 4984 lax (919) 8,14 6497
�N("VA, Certn67 NC0W Car 037731
` -J 6624 Cordon road Unit G W,Imrnglon NC 284 1
oh (910)'63 9793 lax (91o) 343 9688
NIM11 Ca 0175 NCDW Ce t437721
J 6300 9emada Dr 'wita C2 Clemmons NC 17019
lm (336) 7G6 1846 fax [phone]
NCW%Al ( i r1ti101 NCDW Certtl37733
Repast Results To
Company
Address
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Fax 17,2D- 29&+ 94
Sampled by (signature)
Bill To
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Project Reference
Project Number
Purchase Order #
Cl Standard Report Delivery
❑ Mush Report Delivery (wrs.trchargt )
Rush proiecls are eublsct to prior appro.al by
the iaboratory
Requested Due Dam
Sample Desrnpt(on
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End Date
Matrix
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Received by (signature)
iSr'
Date
Time
Relingt,rshed by (signature)
Received by (signature)
Date
Time
'1elinquished by (slgnaljro)
Received by (signature)
Date
Time
Recelpl Conftors (Lab We Only)
❑ 4t9"C ❑ Temp 2 �,^C
Res Chlorine
Q Absent ❑ Present 7 n!a
Acid presery <2?
❑ Ya9 0 No ;4 nla
Base prosery >12?
D Yes 13 No Cwa

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Aug t9 09 09.56P
Tritest Clemmons
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3367662314
Page 1 of 1
p 2
U 1, 1 T E S T
Laboratory Report
NCWW Cart 9 067 NCIDW Cart # 37731 NCIM Cart # 103 NCIDW Cart # 37733 ! NCWW Cert # 075 NCIOW Cent # 37721
6701 Conference Or Raleigh NC 27607 6300 Ramada Dr Suite C2 Clemmons NC 27012 6624 Gordon Rd Unit G Wilmington NC 28411 ;
Ph [phone] Fax [phone] Ph [phone] Fax [phone] Ph [phone] Fax [phone]
wTaSl" r �im¢ny L anrv7* isaP�atmcrua�r�nnt7i�¢+rzr� r r rSr3� �- � -cam �� _J r ^ i» ^
Project No
Pro)ect ID GSO PLANT
- Prepared for -
JIM GILLEY
HARTLEY READY MIX
P O BOX 1719
3510 ROTHROCK RD
WINSTON-SALEM, NC 27107
Report Date
Date Received 811412009
Work Order # 090"1088
Cust Cade HA3928
Cust P 0 #
No Sample ID Date Sampled Ttme Sampled Matrix Sample Type Condition
001 OUTFALL #001 8114/2009 1346 SW Grab Ambient
Test Performed
Method
Results
Lab Lac Vie Quelifier
Total Suspended Solids
3 2540D
14 mg/L
C 8111109
15 00
Settleable Solids
SM 254OF
<0 1 mLIL
W 8114109
1400
pH
SM 4600 H 8
9 95 S U
C 8114109
1405
pH disclaimer
Exceeds holding time
C 8114109
1406
Reviewed by
for Tntest Inc

Aug 19 09 09 56P
4-_._. --
Tritest Clemmons
3367662314 P 3
NCDENR
DISCHARGE OUTFALL MONITORING REPORT
GENERAL PERMIT NCG140000
(All sample data shall be reportcd no later than 30 days after receipt of tab results)
Certificate of Coverage NCG14 ❑ ❑
Facility Name
Number
Certified Laboratory #
Nc- I D 73
Fuson Collecting Sample(s)
UL !
✓
COec = Stgnature
a
Satzty]e Itlfortriguon
Permat Term
Year
Year Start/End Dates
Place check mark to tndicate
applicable sampling penod
Discharge T (check as o nate)
Stormwascr
Wastewater
1
Au ust t 1999toJul 312000
❑
❑
❑
❑
❑
❑
❑
❑
❑
❑
❑
❑
❑
2
August 1 2000 to July 31 2001
3
August l 200! to July 31, 2002
4
August 1 2002 to Ittly 31, 2003
5
August 1 Mil to July 31
xtr o� A 010 1?1;1
-t A Stormwater Discharge Monitoring Data (For stortmwater not combined with process wastewater)
v CharAqtel3stics
S o water Pischarge Monttqgng
Outfall
No
Date Sample
Collected
mold
Total plow
Total Event
Preelpttattoa
inches
Event Duration
airs
pH
Std Units
Total
Suspended
Solids
m
Does this facility perform Vehicle Maintenance Activities using on average more than 55 gallons of new motor
oil per month? ID Yes 1KNo If yes, complete mformation below
gt_o_n*nwiUU Ehaghgle MM tonng bD ychtole Maintenance AMas
Outfali
No
Date Sample
Collected
moJ
Total Mow
G
Tots) Event
Prertpltat=on
arches
Event
Duration
ours
New
Motor Ott
Usage
allmo
pH
Std Umts
TOW
Suspended
Solids
m
Oil and
Grease
na
SwU 241 080199 Page lof 2

Aug 19 09 09 56P Tritest Clemmons
3367662314 P 4
Part R Proem wastewater disebarge monitoring data
Sample #
Effluent Sources for this, sample ,/
Vehrt fe / FAulp_tnent Cleaning 0
haw Maiaienal Stock -pile Wetting ❑
Mixing Drum Clean -out ❑
Rec cle System Overflow ❑
ParamxterUnit
Data
Collection Date
molddlyr
Total Flow
MG
Event Duration
hours
PH
Std units
TSS
mall
Settleable Solids
MIR
Sample #
Efflut nt Source(O for this sam le
Vehicle / FAuipnient Cleaning_ ❑
Raw Material Stock -pile Wettin ❑
laxinz Drum Clean -out
eC cle System Overflow ❑
Parameter
Unit
Data
Collecte on Date
moldd/yr
Total Flow
MG
hours
Event Duration
pH
Sid units
TSS
mg/I
Settleable Solids
tnl/1
Mail original and one copy to
Aim Central Files
Division of Water Quality
DENR
1617 Mail Service Center
Raleigh, NC 27699-1617
Sample #
Effluent Source(s) for this sample
Vehicle / E ui [Went Cleaning
❑
Raw Material Stock- tie Wettin
❑
Mil Drum CIean-out
❑
Rec cle S stern Overflow
❑
Parameter
Unit
Data
Collection ]late
moldd/yr
Total Mow
MG
Event Duration
hours
PH
Sid units
TSS
[Mill
Settleable Solids
tnl/1
Sample #
Effluent Source(s) for this ample
❑
❑
❑
❑
Vehicle! FAuipment Cleanin
Raw Material Stock -pile Wetting
MIxMg Drum Clean -out
Recycle S stem Overflow
Parameter
Unit
Data
Collection Date
ma/dd/yr
Total Flow
MG
Event Duration
hours
pH
Std units
TSS
mg/l
Settleable Solids
no
I certify under penalty of law, that this document and all attachments were
prepared under my direction or supervision in accordance with a system designed
to assure that quahfiod pertionnel properly gather and evaluate the information
submitted Based on my inquiry of the person or persons who manage the system,
or those persons directly responsible for gathering the information the
information submitted is Rothe best of my knowledge and belief true accurate
and complete I am aware that there are significant penalties for submitting false
information including the possibility of fines and imprisonment for knowing
violate
(Fruit a e of Perin ttee or Dcsr ee) �
(Signature of Pemuttee or Drsignoe) (Date)
SWU 241 080199 Page 2 of 2

ALv-c;wj
V,,A
NCDENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
Mr Chad Hartley
Hartley Ready Mix Concrete Inc
PO Box 1719
Welcome North Carolina 27374
Dear Mr Hartley
Division of Water Quality
Coleen H Sullins Dee Freeman
Director Secretary
RECEIVED
July 20 2009 N c Not of eNR
JUL 222009
Winston S
R�g�ora
Subject Additional Information Request #2
General Permit COC No NCG140391
Hartley Ready Mix Concrete Mfg Inc
Guilford County
On July 7 2009, the Division of Water Quality s Stormwater Permitting Unit (SPU) received revised plans calculations
and a response to comments for the additional information request letter sent June 15 2009 A review of these items
has determined that the subject facility is not currently able to meet effluent limitations required by NPDES permit
NCG140000 Thus the following action items are requested before issuance of a Certificate of Coverage will be
considered for Hartley Concrete
1 The existing commingled storm waterlwastewater pond should be restored to its original design volume to
provide adequate detention time and settling of solids Solids excavated from the pond should be
stockpiled until offsite disposal such that all runoff drains back to the treatment pond
Please note that the pond s actual temporary pool storage is the volume contained from the permanent
pool elevation (PPE = 879 25 ft amsl) to the invert of the 8-inch orifice (TPE = 880 70 ft amsl) or
approximately 10 207 CF according to the submitted calculations All storage above the TPE would
discharge too quickly to allow settling of particulates and is not considered available storage
2 Immediate action must be taken to regulate the pH of influent wastewater and/or pond discharge water
Please evaluate pH adjustment equipment and techniques to ensure that pH is maintained between 6 9
standard units at the stormwater discharge outfall
Following completion of the above action items a stormwater discharge sample should be collected
during the first representative storm event (A representative storm event is one that measures greater
than 0 1 inches of rainfall The time between this storm event and the previous storm event measuring
greater than 0 1 inches must be at least 72 hours) and analyzed for pH and TSS Note that pH must be
analyzed within 15 minutes of collection for the result to be considered valid This requires field
measurement of pH with a properly calibrated pH meter The analytical results should be submitted to
SPU along with a summary of remedial actions performed per Items 1 and 2
Acknowledgement of this letter and an implementation schedule should be received by SPU rarior to August 21 2009
or the appl,cation may be returned as incomplete Please note that continued discharge of stormwater and
wastewater without an NPDES permit may be subject to significant civil penalties Prompt attention to this matter is
requested
Please reference COC No NCG140391 on all correspondence If you have any questions concerning this matter feel
free to contact me at [phone] or cory larsen@ncdenr gov
Sincerely
Co rse
Environmental Engineer
cc Corey Basinger Winston-Salem Regional Office
Stormwater Permitting Unit Files
Wetlands and Stormwater Branch One
1617 Mad Service Center Raleigh North Carolina 27699 1617 North C ii of i n a
Location 512 N Salisbury St Raleigh North Carolina 27604 r'y� Ir
Phone [phone] FAX [phone] Customer Service 1-877-623 6748 m I all y
Internet www ngwaterguality o

� y
Y
ENGINEERING, PLLC
110 Scott Avenue, Suite 3
Y High Point, NC 27262 It
Phone [phone]
Fax [phone]
July 2, 2009
Mr Cory Larsen, Environmental Engineer
Stormwater Permitting Unit
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Re Request for Additional Information
General Permit CC No NCG 140391
Hartley Ready Mix Concrete, Inc
Guilford County
Dear Mr Larsen
Enclosed please find three revised sets of plans and calculations for the Hartley Ready Mix
Concrete site in Greensboro on Boulder Road Enclosed with this transmittal are the
following
Revised Plans of the existing site documenting site features, the wash pit, and
detention pond features
Particle settling calculations for the detention pond
The site plan and calculations have been revised in response to the preliminary review dated
June 15, 2009 The specific comments and our responses to the June 15, 2009
correspondence are as follows
1 Comment The submitted calculations for the wash pit and detention pond that discharge
commingled stormwater and wastewater are not adequate to demonstrate sufficient
treatment (i e settling) Please provide additional calculations to show that particle
settling time is less than the Pond's detention time accounting for slormwaler flows from
the 10 year, 24 hour storm Response Enclosed are calculations based on Stokes Law
demonstrating that the pond provides adequate settling time For a 15 micron particle, the
average size assumed, the settling velocity is 0 00051 ft/sec and the particle would need
to settle approximately 6 4 feet, requiring a settling time of 12,549 seconds, or 3 5 hours
Calculations are enclosed based on the stage storage discharge parameters for the facility
that indicate the overall efficiency for a 10 Year, 24 hour storm is approximately 88%

2 Comment The vubmilted analytical results are nearly above effluent limits for TSS and
pH No information was provided as to what conditions the sample was collected,
however, pH was not analyzed within the I5-minute hold time and likely exceeded 9 0
standard units (s u) during collection Please provide details as to how pH will be
maintained between effluent limits of 6-9 s u and how TSS will achieve compliance with
its effluent limit of 30 mgll Response Since the test results for pH and TSS are near the
effluent limits at this time, we respectfully request the following plan of action We
propose to restore the pond to its original design volume, as the "as -built" plans do not
reflect the settling and deposition that has taken place, and has reduced the pond's
volume Secondly, we propose to increase the frequency of sampling to at least once
every two months to provide a better base line of the pond's performance Lastly, we are
investigating equipment designed to lower the pH and TSS of the effluent should the
testing show that the facility is not meeting its effluent limits This approach will prevent
purchasing unnecessary equipment and provide a better base line in determining the
actual needs at the facility, if any Since testing and reporting is a requirement of the
permit, we feel that can best resolve any deficiencies based on actual performance
3 Comment According to the site plan, the detention pond's forebay is utilized as a truck
wash pit Please explain why truck washing occurs in this area instead of the main truck
wash pit area Response The detention pond was not designed with a forebay as it was
based on the local municipalities' criteria The wash pit that appears to serve as a forebay
in the original submittal has been revised to better reflect site conditions The area shown
in the original submittal is actually grassed and flat To the south two pits are used for
dumping the water and material from drum -washing operations The material is dropped
in the southern basin, and as it becomes nearly full, water is displaced into the northern
pit The southern pit can then be excavated and stockpiled as shown on the plan
4 Comment According to the site plan, wastewater from the wash pit short-circuits the
forebay and enters the detention pond via a rip -rap lined channel near the outlet The
commingled wastewater/stormwater discharge from the pit should be routed to the
forebay to allow proper treatment Response The pond does not have a forebay, except
for a small rock check dam below normal pool near the inlet of the rip -rap lined channel
The runoff from the wash pit passes through a concrete chamber with a length to width
ratio exceeding 3 to promote settlement at this location
5 Comment Additional short-circuiting of stormwater occurs from other areas of the
facility via drop -inlets and reinforced concrete pipe that route stormwater around the
forebay and directly into the detention pond Please provide information on why
stormwater is not routed through the forebay first Response Stormwater is not routed
through the forebay first as this area was not designed to be a forebay originally, nor is it
being used in such a capacity at this time
6 Comment The cover letter states that settled material from the wash pit is removed and
used as backfill material Where are settled solids placed as backfill (onsite%ffvite)
Note that any water running off the material would be considered a wastewater and
require treatment Use of this material as backfill may not be considered proper

disposal Response The reclaimed solids from the wash pit area are removed and
stockpiled onsite adjacent to the pits as shown on the revised site plan The material is
removed and taken to the Martin -Marietta quarry near the facility and used in various
roadway stone mixes for road construction
7 Comment Per the requirements of the Randleman Lake Water Supply Watershed Buffer
Rule, all stormwater drainage from portions of this vile that have been constructed after
April 1, 1999and discharge to the 100-foot buffer must be discharged through a
- correctly designed level spreader or another device that meets diffuse flow requirements
per 15A NCAC 2B 0250 Please demonstrate how diffuse flow is maintained through the
buffer of the receiving stream (Unnamed tributary to East Fork Deep River) Response
The discharge from the facility enters the road right-of-way for Tarrant Road and goes
into the ditch line The ditch drains to the north approximately 250 feet before it joins the
unnamed tributary to East Fork Deep River Thus, the discharge point is more than 100
feet from the receiving stream and outside of the 100 foot buffer
Please advise if additional information is required for this project If it would be helpful to
schedule a meeting with you, please let me know Thank you very much for your time and
consideration
Sincerely,
I� i
c file

AVia
NC®NR.
North Carolina Department Of Environment and
Division of Water Quality
Beverly Eaves Perdue Coleen H Sullins
Governor Director
June 15, 2009
Mr Chad Hartley
Hartley Ready Mix Concrete Inc
PO Box 1719
Welcome, North Carolina 27374
Natural Resources
Subject Request for Additional Information
General Permit COC No NCG140391
Hartley Ready Mix Concrete Mfg Inc
Guilford County
Dear Mr Hartley
Dee Freeman
Secretary
The Division of Water Quality s Stormwater Permitting Unit is currently reviewing your application for coverage
under NPDES General Permit NCG140000 A preliminary review has determined that the application is not
complete The following information is needed to continue the stormwater review
1 The submitted calculations for the wash pit and detention pond that discharge commingled
stormwater and wastewater are not adequate to demonstrate sufficient treatment (i a settling)
Please provide additional calculations to show that particle settling time is less than the pond's
detention time accounting for stormwater flows from the 10-year 24-hr storm
2 The submitted analytical results are nearly above effluent limits for TSS and pH No information was
provided as to what conditions the sample was collected however, pH was not analyzed within the
15-minute hold time and likely exceeded 9 0 standard units (s u ) during collection Please provide
details as to how pH will be maintained between effluent limits of 6 9 s u and how TSS will achieve
compliance with its effluent limit of 30 mg/L
3 According to the site plan the detention pond s forebay is utilized as a truck wash pit Please
explain why truck washing occurs in this area instead of the main truck wash pit area
4 According to the site plan wastewater from the wash pit short-circuits the forebay and enters the
detention pond via a rip rap lined channel near the outlet The commingled wastewater/stormwater
discharge from the pit should be routed to the forebay to allow proper treatment
5 Additional short circuiting of stormwater occurs from other areas of the facility via drop -inlets and
reinforced concrete pipe that route stormwater around the forebay and directly into the detention
pond Please provide information on why stormwater is not routed through the forebay first
6 The cover letter states that settled material from the wash pit is removed and used as backfill
material Where are settled solids placed as backfill (onsite/offsite)-? Note that any water running
off the material would be considered a wastewater and require treatment Use of this material as
backfill may not be considered proper disposal
7 Per the requirements of the Randleman Lake Vvater Supply Watershed Buffer Rule all stormwater
drainage from portions of this site that have been constructed after April 1 1999 and discharge to
the 100 foot buffer must be discharged througn a correctly designed level spreader or another
device that meets diffuse flow requirements per 15A NCAC 213 0250 Please demonstrate how
diffuse flow is maintained through the buffer of the receiving stream (Unnamed Tributary to East
Fork Deep River)
Wetlands and Stormwater Branch One
1617 Mad Service Center Raleigh North Carolina 27699 1617 NorthCat oltna
Location 512 N Salisbury St Raleigh North Carolina 27604 j�y� Ir
Phone [phone] FAX [phone] Customer Service 1 877-623 6748 al L ally
Internet www mwaterguality org

Mr Chad I lartley
NCG 140391 — I lartley Ready Mix Concrete
June 15, 2009
Please note that this request for additional information is in response to a preliminary review The requested
information should be received by this Office prior to July 20 2009 or the application may be returned as
incomplete The return of a project will necessitate resubmittal of all required items, including the application
fee
If you need additional time to submit the information, please mail or fax your request for a time extension to the
Division at the address and fax number at the bottom of this letter The request must indicate the date by which
you expect to submit the required information The Division is allowed 90 days from the receipt of a completed
application to issue the permit
Please reference COC No NCG140391 on all correspondence If you have any questions concerning this matter
feel free to contact me at [phone] or cory larsen@ncdenr gov
Sincerely
Cor La s
Environmental Engineer
cc Corey Basinger, Winston-Salem Regional Office
Stormwater Permitting Unit Files

6`;A
NC®ENR
North Carolina Department of Environment and Natura
Beverly Eaves Perdue
Governor
Mr Chad Hartley
Hartley Ready Mix Concrete Inc
PO Box 1719
Welcome North Carolina 27374
Dear Mr Hartley
Division of Water Quality
Coleen H Sullins
Director
June 15 2009
RECEIVED
N C oeot of ENR
JUN 17 2009
Resold[ces Regla�na, oFtece
Subject Request for Additional information
General Permit COC No NCG140391
Hartley Ready Mix Concrete Mfg Inc
Guilford County
Dee Freeman
Secretary
4 /
The Division of Water Quality s Stormwater Permitting Unit is currently reviewing your application for coverage
under NPDES General Permit NCG140000 A preliminary review has determined that the application is not
complete The following information is needed to continue the stormwater review
1 The submitted calculations for the wash pit and detention pond that discharge commingled
stormwater and wastewater are not adequate to demonstrate sufficient treatment (i a settling)
Please provide additional calculations to show that particle settling time is less than the pond s
detention time accounting for stormwater flows from the 10 year 24 hr storm
2 The submitted analytical results are nearly above effluent limits for TSS and pH No information was
provided as to what conditions the sample was collected however, pH was not analyzed within the
15-minute hold time and likely exceeded 9 0 standard units (s u ) during collection Please provide
details as to how pH will be maintained between effluent limits of 6-9 s u and how TSS will achieve
compliance with its effluent limit of 30 mg/L
3 According to the site plan the detention pond s forebay is utilized as a truck wash pit Please
explain why truck washing occurs in this area instead of the main truck wash pit area
4 According to the site plan wastewater from the wash pit short-circuits the forebay and enters the
detention pond via a rip -rap lined channel near the outlet The commingled wastewater/stormwater
discharge from the pit should be routed to the forebay to allow proper treatment
5 Additional short circuiting of stormwater occurs from other areas of the facility via drop -inlets and
reinforced concrete pipe that route stormwater around the forebay and directly into the detention
pond Please provide information on why stormwater is not routed through the forebay first
6 The cover letter states that settled material from the wash pit is removed and used as backfill
material Where are settled solids placed as backfill (onsite/offsite)7 Note that any water running
off tl- - material would be considered a wastewater and require treatment Use of this material as
backfill may not be considered proper disposal
7 Per the requirements of the Randleman Lake Water Supply Watershed Buffer Rule, all stormwater
drainage from portions of this site that have been constructed after April 1 1999 and discharge to
the 100-foot buffer must be discharged through a correctly designed level spreader or another
device that meets diffuse flow requirements per 15A NCAC 213 0250 Please demonstrate how
diffuse flow is maintained through the buffer of the receiving stream (Unnamed Tributary to East
Fork Deep River)
Wetlands and Stormwater Branch One
1617 Mail Service Center Raleigh North Carolina 27699 1617 NorthCarol i na
Location 512 N Salisbury St Raleigh North Carolina 27604 Phone 91M07-63001 FAX [phone] Customer Service 1-877-623-6748 �axall,
Internet www rimaterguality orq

Mr Chad Hartley
NCG 140391 — Hartley Ready Mix Concrete
.tune 15, 2009
Please note that this request for additional information is in response to a preliminary review The requested
information should be received by this Office prior to July 20, 2009 or the application may be returned as
incomplete The return of a project will necessitate resubmittal of all required items, including the application
fee
If you need additional time to submit the information please mail or fax your request for a time extension to the
Division at the address and fax number at the bottom of this letter The request must indicate the date by which
you expect to submit the required information The Division is allowed 90 days from the receipt of a completed
application to issue the permit
Please reference COC No NCG140391 on all correspondence If you have any questions concerning this matter
feel free to contact me at [phone] or cory larsen@ncdenr gov
Sincerely,
Cor La so
Environmental Engineer
cc (Corey Basinger Winston Salem Regional Office
Stormwater Permitting Unit Files

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STORM DRAINAGE CALCULATIONS
FOR
HARTLEY CONCRETE, INC.
at
1040 BOULDER ROAD
Cary of Greensboro - Guilford County - North Carolina
Owner
Hartley Concrete, Inc.
P.O. Box 1719
Welcome, North Carolina 27374
Phone: [phone]
Engineer
ENGINEERING, PLLC
110 Scott Avenue, Suite 3
High Point, NC 27262
Phone: [phone]
Fax: [phone]

Table of Contents
USGS Quad Map @ 1" = 600'
Drainage Areas and Stormwater Features Exhibit @ 1" = 100,
Drainage Areas and Stormwater Features Exhibit with Topo @ i" = 100'
Drainage Areas and Impervious Areas Exhibit @ 1" = 100'
Detention Pond Calculations
Summary
Peak Flow Calculations
Process Water Calculations (w/o Runoff)
Process Water Calculations (w/ Runoff)
Sediment Storage Calculations
Stage -Discharge Calculations
Drawdown Time Calculations
Detention Pond Volume Calculations
HEC-1 Report for 2, 10, 25, 50, and 100 Year storms
Copy of Laboratory Test Report
Details
Pond Outlet Structure
Anti -Vortex Device
Front View of Riser Structure
Cross Section

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DRAINAGE AREAS AND
STORMWATER FEATURES EXHIBIT
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HARTLEY READY MIX CONCRETE, INC
BOULDER ROAD SITE - GREENSBORO. NC

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DRAINAGE AREAS AND
STORMWATER FEATURES EXHIBIT
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r HARTLEY READY MIX CONCRETE, INC
BOULDER ROAD SITE GREENSBORO NC

m m m m m m m m r m m m m i m m m m m
DRAINAGE AREA
160.317 SF = 3 68f AC
(70%\ ISA)
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14 807 SF I
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-3.124 SF -zL¢83 SF 2.56#
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F S' DRAINAGE AREA
3 SF s 2 09t AC
(12 7X ISA)
DRAINAGE AREAS AND
IMPERVIOUS AREAS EXHIBIT
TRUCK WASH PIT DRAINAGE
AREA- 6188 SF - 014t AC
1SA - 5 421 SF (M POND)
L88X ESA)
,I
HARTLEY READY MIX CONCRETE, INC
BOULDER ROAD SITE - GREENSBORO, NC

1
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DETENTION POND SUMMARY
HARTLEY READY MIX SITE - BOULDER ROAD
Wet Detention Pond
Drainage Area 3 68 acres
Design Percentage Impervious 697 %
Pre -Development Flows at Pond
Pre -development Drainage Area
368 acres
Pre -development SCS Curve Number
760
Pre -development Flows 2 Year
7 cfs
10 Year
13 cfs
25 Year
16 cfs
50 Year
19 cfs
100 Year
30 cfs
Post -Development Flows
Post -development Drainage Area
3 68 acres
Post -Development SCS Curve Number
91 3
Post -development Flows
Inflow
Outflow
Stage
2 Year
9 cis
2 cfs
881 65 msl
10 Year
14 cfs
4 cfs
882 63 msl
25 Year
16 cfs
7 cfs
882 78 msl
50 Year
19 cfs
11 cfs
882 94 msl
100 Year
26 cfs
22 cfs
883 25 msl
Comparisons
Pre -development
Post -development
Stage Emergency
Freeboard
Inflow
Outflow
(msl) Spillway
(feet)
2 Year
7 cfs
2 cfs
881 65 DRY
285
10 Year
13 cfs
4 cfs
882 63 DRY
187
25 Year
16 cfs
7 cfs
882 78 DRY
172
50 Year
19 cfs
11 cfs
882 94 DRY
1 56
100 Year
30 cfs
22 cfs
883 25 DRY
1 25

' PEAK FLOW CALCULATIONS
' HARTLEY READY MIX SITE -BOULDER ROAD
PEAK FLOW RATES
Storm Event
Pre -Development
Post -Development
Routed to Pond
By ass
TOTAL
Area Runoff
Area Runoff
Runoff
Area
Runoff
(acres)
(CFS)
(acres) (CFS)
(acres) (CFS)
(cfs)
2 Year Storm (24 Hour)
577
7
368
2
209
3
5
10 Year Storm (24 Hour)
577
13
368
4
209
6
10
25 Year Storm (24 Hour)
577
16
368
7
209
7
14
50 Year Storm (24 Hour)
577
19
368
11
209
8
19
100 Year Storm (24 Hour)
577
30
368
22
209
12
34
Summary Peak flow rates based on HEC-1 output For Pre -Development case the Routing was
performed with a CN = 76 (composite) The pre/post relationship was shown
because of local requirements
Time of Concentration Calculations
Item
Mannings
n
Flow L
(ft)
25 Yr 24 Hr
Precip (in)
Land Slope
(%)
Travel
(hour)
Time
(minutes)
Existing
Sheetflow
0 150
100
565
44
0 113
68
Shallow concentrated
540
565
44
0 044
26
Channel flow
0
0 000
Total Travel Time min
0 157
94
Post -development
Sheetflow
0 150
100
565
25
0 072
43
Shallow concentrated
0 013
430
565
26
0 028
1 7
Channel flow
0
0 000
00
Total Travel Time, min
0 100
60

PROCESS WATER CALCULATIONS
' HARTLEY READY MIX SITE -BOULDER ROAD
PROCESS WATER
Item
Drainage
Area (ac)
Criteria
Water Volume
Vehicles
per Day
Gallons
per vehicle
Gallons
Cubic Feet
Vehicle Washing
Drum Cleaning
Material Wetting
(all materials saturated
surface dry - not to runoff)
----
----
----
300
400
0
401
535
00
s 2_. `_..
<=15 €`E
�� 20
- ; 20 .,,.
' 0 _ _ n
TOTAL WATER VOLUME
700
936
SIZE AND VOLUME OF TRUCK WASH PIT
Item
Length
Width
Avg Depth
Area
Volume
(ft)
(ft)
(ft)
(sfl
(sf)
Ramp into Pit (depth varies)
2000
1000
083
20000
16667
Bottom of pit (depth constant)
6600
1000
1 67
66000
110000
Totals
8600
1 47
86000
126667
Summary Without rainfall, the Truck Wash Pit Area has a volume of 1 267 cubic feet
' compared to a process water volume of 94 cubic feet
The Area to Flow ratio would be very large if considering particle settlement
For a Hose at 5 gpm, for example, the ratio would be
' Area 1 Q ratio = 860 sf 1(5 gpm) * (60 seclmin)*(7 48 gallcf) W
Area 1 Q ratio = 77,194 slft > 430 slft
This water flows to the Detention Pond and is not recycled, so it is subject to
' meeting the effluent conditions

PROCESS WATER CALCULATIONS
HARTLEY READY MIX SITE - BOULDER ROAD
COMMINGLED PROCESS WATER IN 25 YEAR 24 HOUR STORM
Item
Drainage
Criteria
Water Volume
Area (ac)
Vehicles
Gallons
Gallons
Cubic Feet
per Day
per vehicle
Rainfall -- Runoff
----
----
14521
19413
0.14
(25 year/24 hour storm)
Vehicle Washing
----
20
15
300
401
Drum Cleaning
----
20
20
400
535
Material Wetting
----
20
0
0
00
(all materials saturated
surface dry - not to runoff)
TOTAL WATER VOLUME
15221
20349
SIZE AND VOLUME OF TRUCK WASH PIT
Item
Length
Width
Avg Depth
Area
Volume
(ft)
(ft)
(ft)
(sf)
(sf)
Ramp into Pit (depth varies)
2000
1000
083
20000
16667
Bottom of pit (depth constant)
6600
1000
1 67
66000
110000
Totals
8600
147
86000
126667
Summary With the 25 Year 24 hour rainfall, the Truck Wash Pit Area has a volume of
1,267 cubic fee compared to a commingled water volume of 2,035 cubic feet
The Area to Flow ratio is calculated for particle settlement based on peak runoff
plus chose at 5 gpm, as shown
Q25=C*I*A=090*614inlhr*014acres =077cfs
(The Rational Method is used for simplicity, since the Routing
is provided based on HEC-1, and this is being used for
illustrative purposes)
Area 1 Q ratio = 860 sfl((5 gpm)/(60 slm)1(7 48 gallcf) + 0 77 cfs) = 86010 781
Area 1 Q ratio = 1,101 slft > 430 slft
This water flows to the Detention Pond and is not recycled, so it is subject to
meeting the effluent conditions

' SEDIMENT STORAGE CALCULATIONS
' HARTLEY READY MIX SITE - BOULDER ROAD
SEDIMENT STORAGE AND PERMANAENT POOL
Item
Drainage
Criteria per Greensboro
Volume Provided at
Depth (in)
Volume (cf)
Elevation
Volume (cf)
Area (ac)
Drainage Area
368
Permanent Sediment Storage
368
0 125
1670
Stored in Forebay
87625
12660
Stored below Forebay
87625
5000
TOTAL Stored
17660
Temporary Sediment Storage
368
0
0
0
00
Permanent Water Storage
368
100
Rv = 0 05 + 0 009`(Imp%)
068
WQv = (1 O'Rv"DA)112
9031
87925
9726
For 25 Year 124 Hour Storm
565
Rv for 25 Yr 124 Hr Storm
068
51028
TOTAL WATER VOLUME
114920
WET POND SIZING (BY CITY OF GREENSBORO CRITERIA)
Item
Summary
Drainage Area
368
acres
Built Upon Area
256
acres = 70%
Average Pond Depth
30
feet
Surface 1 Drainage Area Ratio
288
% **
Surface Area Re uired
4617
square feet
Surface Area Provided
5861
square feet
"" PER NCDENR BMP TABLE 10-1

STAGE -DISCHARGE CALCULATIONS
HARTLEY READY MIX SITE -BOULDER ROAD
2 Year Drawdown Riser Size 1 5 Inches
Orifice Coefficient 060
Weir Coefficient 30
Invert (Rim) 879 25 msl
Secondary Drawdown Riser Size 8 0 Inches
Orifice Coefficient 060
Weir Coefficient 30
Invert (Rim) 880 70 msl
10 Year Drawdown Invert (Rim) 88250
Riser Size 36 inches
Weir Coefficient 30
Barrel Barrel Size 24 0 inches
Mannings N 0 015
Invert In 87475
Invert Out 87412
Length 63 0 feet
Emergency Spillway Elevation 8835
Length 12 0 feet
Cw 30
2 Year Spillway
Seconda Spillway
10 Year -Weir
Barrel
Emer
Total
Elevation
Head on
Q
Head on
Q
Head
Q
Q -Chart
Q-Actual
Spillway
Q (cfs)
(msl)
Pipe (ft)
(cfs)
Pipe (ft)
(cfs)
(feet)
(cfs
(cfs)
(cfs)
(cfs)
87925
000
000
000
000
87938
013
002
000
000
000
000
1700
002
000
0 021
87950
025
003
000
000
000
000
1740
003
000
0 030
87963
038
004
000
000
000
000
1780
004
000
0 038
87975
050
004
000
000
000
000
1820
004
000
0 042
87988
063
005
000
000
000
000
1860
005
000
0 047
88000
075
005
000
000
000
000
1900
005
000
0 051
88013
088
006
000
000
000
000
1938
006
000
0 055
88025
100
006
000
000
000
000
1975
006
000
0 059
88038
1 13
006
000
000
000
000
2013
006
000
0 063
88050
1 25
007
000
000
000
000
2050
007
000
0 066
88063
1 38
007
000
000
000
000
2088
007
000
0 069
88075
1 50
007
005
007
000
0 00
2125
014
000
0 143
88088
1 63
008
017
046
000
000
2163
054
000
0 535
88100
1 75
008
030
092
000
000
2200
100
000
0 999
881 13
1 88
008
042
1 10
000
000
2263
1 18
000
1 177
881 25
200
008
055
1 25
0 DO
000
2325
1 33
000
1 330
881 38
213
009
067
1 38
000
000
2388
1 47
000
1 467
881 50
225
009
0 BO
1 50
000
000
2450
1 59
000
1 592
881 63
238
009
092
1 62
000
000
2513
1 71
000
1 708
881 75
250
009
1 05
1 72
000
000
2575
1 82
000
1 816
881 88
263
010
1 17
1 82
000
000
2638
192
000
1 918
88200
275
010
1 30
192
000
000
2700
201
000
2014
88213
288
010
142
201
000
000
2738
211
000
2 107
88225
300
010
1 55
209
000
000
2775
219
000
2 195
88238
313
010
167
218
000
000
2813
228
000
2 280
88250
325
Oil
180
225
000
000
2850
236
000
2 361
88263
338
Oil
1 92
233
013
1 25
2888
369
000
3 690
88275
350
Oil
205
241
025
353
2925
605
000
6 051
88288
363
Oil
217
248
038
649
2963
908
000
9 084
88300
375
Oil
230
255
050
1000
3000
1266
000
12 660
88313
388
012
242
262
063
1397
3031
1670
000
16 704
88325
400
012
255
2 68
075
1836
3063
21 17
000
21 167
88338
413
012
267
275
088
2314
3094
2601
000
26 011
883 50
425
012
280
281
1 00
2827
31 25
31 21
000
31 209
88363
438
012
292
287
1 13
3374
31 56
31 56
1 59
33 153
88375
450
013
305
294
1 25
3805
3188
31 88
450
36 375
88388
463
013
317
299
1 38
3991
3219
3219
827
40 455
88400
475
013
330
305
1 50
4168
3250
3250
1273
45 228
88413
488
013
342,
311,
1 61J
4339
32 81
3281,
1779
50 598

DRAWDOWN TIME CALCULATIONS
HARTLEY READY MIX SITE - BOULDER ROAD
Orifice Size 1 50 inches
Orifice Coefficient 060
Weir Coefficient 30
Invert 879 25 msl Increment (feet) 0 125
Elevation
(msl)
Area
(sf)
Incremental
Volume
(cf)
Total
Volume
(cf)
Head on
Orifice
(ft)
Q
(cfs)
Time
(sec)
Total Time
(sec)
Total Time
(hours)
87925
5861
000
000
87938
6011
742
742
013
002
35518
35518
987
87950
6161
761
1503
025
003
25749
61267
1702
87963
6311
780
2282
038
004
21543
82810
2300
87975
6461
798
3081
050
004
19105
101915
2831
87988
6612
817
3898
063
005
17491
119406
3317
88000
6762
836
4733
075
005
16335
135740
3771
88013
6941
856
5590
088
006
15495
151235
4201
88025
7120
879
6469
100
006
14872
166107
4614
88038
7299
901
7370
1 13
006
14379
180486
5013
88050
7478
924
8293
1 25
007
13979
194465
5402
88063
7656
946
9239
1 38
007
13651
208117
5781
88075
7835
968
10207
1 50
007
13379
221496
61 53
88088
8014
991
11198
1 63
008
13151
234647
6518
881 00
8193
1013
12211
1 75
008
12959
247605
6878
881 13
8394
1037
13248
1 88
008
12812
260418
7234
881 25
8594
1062
14309
200
008
12706
273124
7587
881 38
8795
1087
15396
2 13
009
12618
285741
7937
881 50
8996
1112
16508
225
009
12545
298286
8286
881 63
9196
1137
17645
238
009
12486
310772
8633
88175
9397
1162
18807
250
009
12438
323210
8978
881 88
9597
1187
19994
263
010
12400
335610
9323
88200
9798
1212
21206
275
010
12371
347981
9666
88213
10015
1238
22445
288
0 10
12359
360341
10009
88225
10231
1265
23710
300
010
12364
372704
10353
88238
10448
1292
25002
313
0 10
12373
385077
10697
88250
10664
1319
26322
325
Oil
12387
397464
11041
88263
10881
1347
27668
338
Oil
12404
409868
11385
88275
11097
1374
29042
350
Oil
12426
422294
11730
88288
11314
1401
30443
363
Oil
12450
434744
12076
88300
11530
1428
31870
375
Oil
12477
447222
12423
88313
11750
1455
33325
388
0 12
12509
459730
12770
88325
11970
1482
34808
400
012
12545
472275
131 19
88338
12190
1510
36318
413
012
12582
484857
13468
88350
12410
1537
37855
425
012
12621
497478
13819
88363
12629
1565
39420
438
012
12662
510140
141 71
88375
12849
1592
41013
450
0 13
12704
522844
14523
88388
13069
1620
42633
463
013
12748
535592
14878
88400
13289
1647
44280
475
013
12792
548384
15233
" From Elevation 880 70 (1 5' orifice only) the Drawdown Time = 60 0 hours = 2 5 days
"W From Elevation 882 50 (8" and 1 5" orifices) the Drawdown Time = 110 4 hours = 4 6 days

DETENTION POND CALCULATIONS
HARTLEY READY MIX SITE - BOULDER ROAD
Wet Detention Basin Volumes
Drainage Area
Disturbed Area
Design Percentage Impervious
Stage -Storage Data
Main Pond
Stage
Area (sf)
Incr V
Total V
874 25
10
87600
319
123
123
876 00i
2255
1287
1410
87700
3129
2692
4102
87800
4098
3614
7716
87900
5020
4559
12275
87925
5861
1360
13635
88000
6762
4734
18369
881 00
8193
7478
25846
88200
9798
8996
34842
88300
11530
10664
45506
88400
13289
12410
57915
Top of Dam
Sediment Volumes
Permanent (m)
Temporary (m)
Total
Volume Below Normal Pool
Temporary Water Quality Pool
Runoff from 1" Rainfall
3 68 acres
0 00 acres
697 %
Bed El WQ Pool
87610
88057
884 50 msl
0 125 *Dr A = 1670 cf
0 000 *Dist A = 0 cf
1670 cf
879 25 msl 13635 cf
0 676 in = 9031 cf

M M M M M M M M M M M M
+ *
* FLOOD HYDROGRAPH PACKAGE (HEC-1)
* SEPTEMBER 1990
* VERSION 4 0
* RUN DATE 05/21/2009 TIME 16 42 12
+ *
+++++++++++++++*++++++++++++*++++++++++*+
Hartley out
X X
XXXXXXX
XXXXX
X
X x
X
X
X
XX
X X
X
X
X
}DDDD=
XXXX
X
XXXXX
X
X X
X
X
X
X X
X
X
X
X
X X
NDDDD
X X:)=
XXX
++*+++++++++++++++*++*++++++++++++++++*
+ +
* U S ARMY CORPS OF ENGINEERS
* HYDROLOGIC ENGINEERING CENTER
* 609 SECOND STREET
* DAVIS, CALIFORNIA 95616
* [phone]
+ +
THIS PROGRAM REPLACES ALL PREVIOUS VERSIONS OF HEC-1 KNOWN AS HEC1 (JAN 73), HECIGS, HECIDB, AND HECIKW
THE DEFINITIONS OF VARIABLES-RTIMP- AND-RTIOR- HAVE CHANGED FROM THOSE USED WITH THE 1973-STYLE INPUT STRUCTURE
THE DEFINITION OF-AMSKK- ON RM-CARD WAS CHANGED WITH REVISIONS DATED 28 SEP 81 THIS IS THE FORTRAN77 VERSION
NEW OPTIONS DAMBREAK OUTFLOW SUBMERGENCE , SINGLE EVENT DAMAGE CALCULATION, DSS WRITE STAGE FREQUENCY,
DSS READ TIME SERIES AT DESIRED CALCULATION INTERVAL LOSS RATE GREEN AND AMPT INFILTRATION
KINEMATIC WAVE NEW FINITE DIFFERENCE ALGORITHM
1
HEC-1 INPUT
LINE
ID
1 2
3
4 5
6
7
8 9 10
1
ID
Boulder Road
- Wet Pond Stormwater Treatment
Facility
*DIAGRAM
2
IT
5 25DEC93
000
300
3
IO
5 0
4
JP
5
5
KK
DADRAINAGE BASIN AT
POND AREA-- 3 68
ACRES=
0 00575
SQUARE MILES
6
BA
00575 44 1
7
KM
2 YEAR, 10 YEAR,
25 YEAR,
50 YEAR AND
100 YEAR STORM
(MRCS GUILFORD CO)
8
PH
0
0 36
0 69 1 46
1 54
1 88
2 32 2 78 3 50
9
LS
0 92
10
UD
0 10
PAGE 1
Page 1

Hartley out
11 KP 2
12 PH
0 50
1
04
2 08
2
95
3
51
3
64
4
26
5 20
13 KP 3
14 PH
0 55
1
18
2 36
3
26
3
91
4
16
4
89
5 65
15 KP 4
16 PH
0 63
1
32
2 67
3
67
4
38
4
75
5
50
6 60
17 KP 5
18 PH
0 83
1
80
3 70
4
80
5
70
6
90
7
68
9 36
19 KK POOL ROUTE THROUGH POND
20 RS 1 ELEV
879 25
21 SA 0 1346 0 1552
0 2018
0 2249
0 2647
0 3051
22 SE 879 25 880
881
882
883
884
23 SQ 0 0 036
0 069
0
54
1 00
2
36
6
05
12
66
31
21
40 46
24 SE 879 25 879 50
880 63
880
88
881 00
882
50
882
75
883
00
883
50
883 88
25 ZZ
1
SCHEMATIC DIAGRAM OF STREAM NETWORK
INPUT
LINE (V) ROUTING (--->) DIVERSION OR PUMP
FLOW
NO ( ) CONNECTOR (< --- ) RETURN OF DIVERTED
OR
PUMPED
FLOW
5 DA
V
V
19 POOL
(***) RUNOFF ALSO COMPUTED AT THIS LOCATION
* FLOOD HYDROGRAPH PACKAGE (HEC-1) *
*
U S
ARMY CORPS OF ENGINEERS
* SEPTEMHER 1990 *
+
HYDROLOGIC
ENGINEERING CENTER
* VERSION 4 0 *
*
609 SECOND STREET
* *
*
DAVIS, CALIFORNIA 95616 +
* RUN DATE 05/21/2009 TIME 16 42 12 *
*
[phone]
Boulder Road - Wet Pond Stormwater Treatment Facility
3 IO OUTPUT CONTROL VARIABLES
IPRNT 5 PRINT CONTROL
IPLOT 0 PLOT CONTROL
QSCAL 0 HYDROGRAPH PLOT SCALE
Page 2

1
Hartley out
IT HYDROGRAPH TIME DATA
NMIN 5 MINUTES IN COMPUTATION INTERVAL
IDATE 25DEC93 STARTING DATE
ITIME 0000 STARTING TIME
NQ 300 NUMBER OF HYDROGRAPH ORDINATES
NDDATE 26DEC93 ENDING DATE
NDTIME 0055 ENDING TIME
ICENT 19 CENTURY MARK
COMPUTATION INTERVAL 08 HOURS
TOTAL TIME BASE 24 92 HOURS
DTP
OPERATION
ENGLISH UNITS
DRAINAGE AREA SQUARE MILES
PRECIPITATION DEPTH INCHES
LENGTH, ELEVATION FEET
FLOW CUBIC FEET PER SECOND
STORAGE VOLUME ACRE-FEET
SURFACE AREA ACRES
TEMPERATURE DEGREES FAHRENHEIT
MULTI -PLAN OPTION
NPLAN 5 NUMBER OF PLANS
MULTI -RATIO OPTION
RATIOS OF RUNOFF
1 00
HYDROGRAPH AT
PEAK FLOW AND STAGE (END -OF -PERIOD) SUMMARY FOR MULTIPLE PLAN -RATIO ECONOMIC COMPUTATIONS
FLOWS IN CUBIC FEET PER SECOND, AREA IN SQUARE MILES
TIME TO PEAK IN HOURS
STATION AREA PLAN
DA 01
1 FLOW
TIME
2 FLOW
TIME
3 FLOW
TIME
4 FLOW
TIME
5 FLOW
TIME
RATIO 1
1 00
9
12 17
14
12 17
16
12 17
19
12 17
26
12 17
RATIOS APPLIED TO FLOWS
Page 3

Hartley out
ROUTED TO
+ POOL 01 1
FLOW
2
TIME
12 58
2
FLOW
4
TIME
12 50
3
FLOW
7
TIME
12 42
4
FLOW
11
TIME
12 33
5
FLOW
22
TIME
12 25
�*
PEAK STAGES
IN FEET **
1
STAGE
881 65
TIME
12 67
2
STAGE
882 63
TIME
12 50
3
STAGE
882 78
TIME
12 42
4
STAGE
882 94
TIME
12 33
5
STAGE
883 25
TIME
12 25
*** NORMAL END OF HEC-1 ***
Page 4

Q
Page 1 of 1
7 MOT S T
Laboratory Report
Lob Locafron'i;
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NCNWV Cart4 097 NCIDVV Cart * 37731
NCNVW Cart * 103 NClDW Cart # 37733
NCIWW Cart 4 075 NCIDW Cart 0 37721
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6701 Owdsmnce Dr Rafth, NC 27617
6301 Ramada 01,11uka C2, Clommons, INC 270i 2
6024 Gordon Rd Unit G VWIDWngton, t IC 28411
'Ph
[phone] Fax [phone]
Ph [phone] Fax [phone]
Ph (336) lea 7048 Fax (336) 78+r2514
� rntnMtk nraf�lip�1+-+s�'FfR7gle'I
Project No
Project ID GREENSBORO PLANT
Report Date 3/1012009
Date Received 31412009
-- Prepared for ---
1
JIM ©ILLEY
HARTLEY READY MIX
Work Order#
09D3-0I}346
'
P O BOX 1719
3610 ROTHROCK RD
Cust Code
Cust P ON
HA3928
WINSTON-SALEM. NC 27107
No Semple ID Date Sampled
Time Sampled Matrix
Sample Type Cand,tton
001 TRUCK WASH AREA 31W2009
1430 ww
Grab See .HOC
Tent Performed
Method
Results
LabLoc '[ eadfime qualifier
Total Suspendsd R—olids
SM 2540029
MWE
C
3109
15 45
PH
SM 4500 N 0
8 75 8 U
C
315109
1400
Settleable Solids
SM 264OF
01 mLIL
C
314109
1535
pH disclaimer
Exceeds holding time
-
C
315109
1400
Reviewed by' �•�••
for test Inc
?, d
9I tGOEL966
9WNH WdGi-2i 6CO2 9T -eW

m m m m m = m m m m m m = �
SGO608 SHEAR GATE VALVE
W/ 7 25' LIFT ROD
SUPPORT BRACKET
CV
O)
CORRUGATED ALUMINUM PIPE
n
ram+ co ELEV = 880 70
E EV = 879 25
DAM SLOPE
POSITIDN
8' CAP
16 GA —
ANTI —VORTEX DEVICE
INV = 87,
it3
LV e 4
A a v
A
a
o a
CONC BASE
DIM = 4x4x2 ---�
(ANTI FLOATATION BLOCK)
ANTI -VORTEX SUPPORTS AND A TOP
GRATE OF ALUMINUM BAR 6" 0 C EACH WAY
r DIAMETER SLOW WATER
RELEASE HOLE WITH
TRASH GUARD
PIPE RISER
DIA = 360
r 1 5" DIAMETER SLOW WATER 72"x72' ANTI —SEEP PLATES SANDWICHED
RELEASE HOLE WITH BETWEEN GASKETS IN FLG JOINT
TRASH GUARD
GASKET (TYP)--1
A o ,%� Itt
24" CAP OUTFALL ELEV = 87412
iv BARREL SSEMB WATERTIGHT JOINTS
o WITH SST HARDWARE PROVIDED (TYP)
4 4 5' 20' 20' 20'
63'

A
PLAN
RISER
^�RRUGATED ALUMINUM TRASH
#CK WITH ALUMINUM BAR GRATE
)P AND ANTI -VORTEX PLATES
A
_j
ISOMETRIC
PLATE
BOLT FOR SECURING
TRASH RACK TO RISER
�1' MIN RISER BARREL
DETAIL
SLOTS ON ANTI -VORTEX
PLATES ARE USED TO POSITION
THE TRASH RACK ON RISER
ANTI- VORTEX DEVICE
ALUMINUM ANGLE WELDED
TO ANTI -VORTEX PLATE
DETAI LL

' BOLT TO FACE OF OULE1
STRUCTURE USING 3/4"
'DIAMETER BOLTS EVERY
VERTICAL FOOT
"OP ELEVTION AT 881 5
8" HALF ROUND ALUMINIZED PP --
RASH RASH GAURD
OTTOM ELEVTION AT 878 75
I
FRONT VIEW -STRUCTURE A-2

M ,_ ,M ,M ,m ,m ,m ,m ,m im im im m r � t m l m m 1 m
SEE POND OUTLET STRUCTURE
xx DE WL THIS SKEET
RJP—RAP PAD
{MTH FILTER FAENC
SEE SHEET 071
FLOWWATFR STORAGE 100 YR 24 HR EL = OU25
10YR 24 STORY STORAGE HE]GHT 882.63
2YR 24 STORM STORAGE HMW W 65
WQ STORAGE (EX±ZTTM DfTEWTON) —
itO00ML BAFFLE
V 10' SUMOWED) 3'
MIN FUIRA1Y mm I !►All
1266 CF SEDU NT STORAGE J , SOORA ��
10' MIN
(SEE PLAN)
TOP Of DAM EL - 884.50
10 MN.
FREEBOARD
DETAIL %-•W RAP PAD CHANNEL
SEE
SEE SHEET KEY TRENCH SEE DETAIL SHEET C71

i
V
S ".lVGV
wfmsc 9K
nACtc.
7q 3681
rbe V-r&.
DETENTION POND CALCULATIONS
Project Hartley Concrete
Location Greensboro Date 713109
Designed by PRB s
Assumptions Normal Pool Elevation 87925 msl
Bottom of Pond 87625 msl
Intensity, 10 Year 1 00 inlhr
Cw, Weir Coefficient 300
Target Length/Width Ratio 25 1
Storm Interval
Discharge
Basin Dimensions ft
Depth to
Bottom (ft)
Temp Pool
Depth (ft)
(cfs)
Avg Length
Avg Width
Max Stage
2 year
1 73
1357
68
88165
540
240
10 year
368
151 1
72
88263
638
338
25 year
665
150 6
74
88278
653
353
ormal Pool
0 001
879 250
300
879 375
0 021
879 375
313
013
879 500
0 030
879 600
326
025
879 625
0 036
879 625
338
038
879 750
0 042
879 750
350
050
879875
0 047
879 875
363
0 63
880 000
0051
880 000
375
075
880125
0 055
p
L. VOL
880125
388
088
880 250
0 059
880 250
400
100
880 375
0 063
880 375
413
113
880 500
0 066
880 500
425
1 25
880 625
0 069
880 625
438
1 38
4 880 750
0143
880 750
450
1 50
880 875
0 535
880 875
463
163
881 000
0 999
881 000
475
175
881 125
1 177
881 125
488
188
881 250
1 330
881 250
Soo
200
881375
1467
881375
513
213
81 500
1 592
881 500
525
225
881 625
1 708
881 625
538
238
881 750
1 816
881 750
550
250
881 875
1 918
881 875
563
263
882 000
2014
882 000
576
275
882126
2 107
882 125
588
288
882 250
2 195
882 250
600
300
882 375
2 280
882 375
613
313
882 500
2 361
882 500
625
325
882 625
3 690
882 625
638
338
882 750
6 051
882 760
650
350
882 875
9 084
882 875
663
363
Cumulative

/0 ys- -
S?v&w
STORAGE TIME CALCULATIONS
Project Hartley Concrete
Location Greensboro Date 713109
Designed by PRB
Assumptions C, Runoff Coefficient 87925
Intensity, 2 Year 87625 m/hr
Intensity, 10 Year 100 in1hr
Cw, Weir Coefficient 300
Target LengthlWidth Ratio 25 1
Storm Interval
Pool
A1Q
Storage Volume c
Time to Drain
Area (sf)
Ratio
Incr
Total
(seconds)
(Hours)
2 year
9228
5334
10 year
10879
2956
25 year
11144
1676
Normal Pool
5861
5861000
879 375
6011
286238
74200
74200
35333
981
879 600
6161
205367
76075
150275
25358
704
879 625
6311
175306
77950
228225
21653
601
879 750
6461
153833
79825
308060
19006
528
879 875
6612
140681
81706
389756
17384
483
880 000
6762
132588
83588
473344
16390
455
880125
6941
126200
85644
558988
15572
433
880 250
7120
120678
87881
646869
14895
414
880 375
7299
115857
90119
736988
14305
397
880 500
7478
113303
92356
829344
13993
389
880 625
7656
110957
94588
923931
13708
381
880 750
7835
54790
96819
1020750
6771
188
880 875
8014
14979
99056
1119806
1852
051
881 000
8193
8201
101294
1221100
1014
028
881 125
8394
7132
103669
1324769
881
024
881250
8694
6462
106176
1430944
798
022
881 375
8795
5995
108681
1539625
741
021
881 500
8996
5651
111194
1650819
698
019
881 625
9196
5384
113700
1764519
666
018
881 750
9397
5175
116206
1880725
640
018
881 875
9597
5004
118713
1999438
619
017
882 000
9798
4865
121219
2120656
602
017
882125
10015
4753
123831
2244488
588
016
882 250
10231
4661
126538
2371025
576
016
882 375
10448
4582
129244
2500269
567
016
882 500
10664
4517
131950
2632219
559
016
2 625
10881
2949
134656
2766875
365
010
882 750
11097
1834
137363
2904238
227
006
882 875
11314
1245
140069
3044306
154
004
Cumulative
1
1 30443 06
225914
62751

r%
SETTLING EFFICIENCY FOR 15 MICRON PARTICLE CALCULATIONS
Project
Hartley Concrete
Location
Greensboro
Designed by
PRB
Assumptions
Gravity
Specific Gravity
Kinematic Viscosity
Design Efficiency
Number of Cells
15 microns
Date 713109
322 ft/sec"2
265
1406 10-6 ftls Temp 50
70 %
2
7 a exfs
Storm Interval
Volume Settled c
Settling
V (ftls)
Efficiency
Incremental
Cumulative
Incremental
Overall
2 year
000051
8198
10 year
000051
6740
25 year
000051
5083
Normal Pool
87938
742
742
000061
9998
9998
87950
760
1502
000051
9996
9997
87963
779
2281
000051
9995
9996
87975
798
3079
000051
9993
9996
87988
816
3896
000051
9992
9995
88000
835
4731
000061
9991
9994
88013
856
5686
000051
9990
9994
88025
878
6464
000051
9990
9993
88038
900
7364
000051
9989
9993
88050
922
8287
000051
9988
9992
88063
945
9232
000051
9988
9992
88075
964
10195
000051
9953
9988
88088
946
11141
000051
9552
9949
88100
903
12045
000051
8917
9864
881 13
902
12946
000051
8696
9772
881 25
905
13851
000051
8626
9680
88138
911
14763
000051
8386
9589
881 50
920
15682
000061
8270
9500
88163
929
16612
000051
8172
9414
88175
940
17552
000051
8089
9332
88188
952
18503
000051
8017
9254
88200
964
19468
000051
7955
9180
88213
978
20446
000051
7900
9109
88225
994
21"0
000051
7856
9042
88238
1010
22450
000051
7818
8979
88250
1027
23478
000051
7785
8919
88263
899
24377
000051
6677
8810
88275
727
25103
000051
5290
8644
88288
585
25689
000051
41 78
8438
Cumulative
25689
2 Year 24 Hour Storm
10 Year 24 Hour Storm
25 Year 24 Hour Storm

F
SETTLING EFFICIENCY CALCULATIONS
Project Hartley Concrete
Location Greensboro
Designed by PRB
Assumptions Gravity
Specific Gravity
Kinematic Viscosity
Design Efficiency
Number of Cells
Date 713109
3220 ftlsec"2
265
1406 10-6 ftls Temp 50
700 %
2
Deg F
Design Particles
40 microns
20
microns
15 microns
Basin
Pool
Q 10
A1Q Ratio
Settling
Efficiency
Settling
Efficiency
Settling
Efficiency
Area (sf)
(cfs)
(seclft)
V (ftls)
(%)
V (ftls)
M)
V (ftls)
(%)
2 year
92276
173
53339
000362
9912
000090
9140
000051
81 98
10 year
108792
368
29563
000362
9752
000090
81 68
000051
6740
25 year
111444
665
16758
000362
9384
000090
6762
000051
5083
ormal Po
000
879 375
5861
002
2790952
000362
10000
000090
9999
000051
9998
8795
6011
003
2003667
000362
10000
000090
9999
000051
9996
879 625
6161
004
1711389
000362
10000
000090
9998
000051
9995
87976
6311
004
1502619
000362
10000
000090
9998
000051
9993
879 875
6461
006
1374681
000362
10000
000090
9997
000051
9992
880
6612
005
1296471
000362
10000
000090
9997
000051
9991
880 125
6762
006
122945 5
000362
10000
000090
9997
000051
9990
88025
6941
006
1176441
000362
10000
000090
9997
000051
9990
880 375
7120
006
1130159
000362
10000
000090
9996
000051
9989
8805
7299
007
1105909
000362
10000
000090
9996
000051
9988
880 625
7478
007
1083768
000362
10000
000090
9996
000051
9988
88075
7656
014
535385
000362
9999
000090
9984
000051
9953
880 875
7835
064
146" 9
000362
9987
000090
9828
000051
9552
881
8014
100
80220
000362
9958
000090
9533
000051
8917
881 125
8193
1 18
69609
000362
9946
000090
9418
000051
8696
88125
8394
1 33
63113
000362
9935
000090
9326
000051
8526
881 375
8594
147
68582
000362
9926
000090
9248
000051
8386
881 5
8795
1 59
55245
000362
9917
000090
91 82
000051
8270
881 625
8996
171
52670
000362
9910
000090
91 25
000051
8172
88175
9196
182
50639
000362
9903
000090
9075
000051
8089
881 875
9397
192
48994
000362
9897
000090
9032
000051
8017
882
9597
201
47651
000362
9892
000090
8994
000051
7955
882 125
9798
211
46502
000362
9887
000090
8961
000051
7900
88225
10015
220
45626
000362
9883
000090
8933
000051
7856
882 375
10231
228
44873
000362
9880
000090
8909
000051
7818
8825
10448
236
44252
000362
9877
000090
8889
000051
7785
882 625
10664
369
28900
000362
9742
000090
8120
000051
6677
88275
10881
605
17982
000362
9447
000090
6957
000051
5290
882 875
11097
908
12216
0003621
9029
000090
5849
000051
41781

Print - Maps
Bing Maps r� ?
1040 Boulder Rd, Greensboro, NC 27409-
``r' 9106
My Notes
o FREE! Use Bing 411 to find movies,
businesses & more; 800-BING-411
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littp://www.bing.coinlinapslpi-int.Eispx'?!nkt-en-us&z 2&s---b&cp----gO96bbgli4sg6&poi-10... 7/20/1-009

REVISED STORM DRAINAGE CALCULATIONS
FOR
HARTLEY CONCRETE, INC.
at
1040 BOULDER ROAD
City of Greensboro - Guilford County - North Carolina
Owner
Hartley Concrete, Inc.
P.O Box 1719
Welcome, North Carolina 27374
Phone: [phone]
Engineer
9 we-y
ENGINEERING, PLLC
110 Scott Avenue, Suite 3
High Point, NC 27262
Phone: [phone]
Fax: [phone]
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Table of Contents
Detention Pond Calculations
' Summary
Peak Flow Calculations
Process Water Calculations (w/o Runoto
' Process Water Calculations (w/ Runofl)
Sediment Storage Calculations
Stage -Discharge Calculations
' Drawdown I ime Calculations
Detention Pond Volume Calculations
IHEC-1 Report for 2, 10, 25, 50, and 100 Year storms

DETENTION POND SUMMARY
' 1 HARTLEY READY MIX SITE - BOULDER ROAD
Wet Detention Pond
'
Drainage Area
w -
3 68 acres
Design Percentage Impervious
1 r
697 %
Pre -Development Flows at Pond
Pre -development Drainage Area
368 acres
tPre -development SCS Curve Number
760
Pre -development Flows 2 Year
7 cfs
10 Year
13 cfs
' 25 Year
16 cfs
50 Year
19 cfs
100 Year
30 cfs
Post -Development Flows
1 Post -development Drainage Area
3 68 acres
Post -Development SCS Curve Number
913
' Post -development Flows
Inflow
Outflow Stage
2 Year 9 cfs
0 cfs 881 85 msl
' 10 Year 14 cfs
4 cfs 882 74 msl
25 Year 16 cfs
6 cfs 88283 msl
50 Year 19 cfs
11 cfs 88302 msl
' 100 Year 26 cfs
27 cfs 88345 msl
Comparisons
Pre -development Post -development
Stage Emergency Freeboard
'
Inflow Outflow
(msl) Spillway (feet)
2 Year 7 cfs 0 cfs
881 85 DRY
265
' 10 Year 13 cfs 4 cfs
882 74 DRY
1 76
25 Year 16 cfs 6 cfs
882 83 DRY
1 67
50 Year 19 cfs 11 cfs
883 02 DRY
148
' 100 Year 30 cfs 27 cfs
883 45 DRY
1 05

' PEAK FLOW CALCULATIONS
' HARTLEY READY MIX SITE -BOULDER ROAD
I"
I
PEAK FLOW RATES
Storm Event
Pre -Development
Post- Development
Routed to Pond
By ass
TOTAL
Area Runoff
Area Runoff
Runoff
Area
Runoff
(acres)
(CFS)
(acres) (CFS)
(acres) (CFS)
(cfs)
2 Year Storm (24 Hour)
577
7
368
2
209
3
5
10 Year Storm (24 Hour)
577
13
368
4
209
6
10
25 Year Storm (24 Hour)
577
16
368
7
209
7
14
50 Year Storm (24 Hour)
577
19
368
11
209
8
19
100 Year Storm (24 Hour)
577
30
368
22
209
12
34
ISummary
Peals flow rates based on HEC-1 output For Pre -Development case the Routing was
performed with a CN = 76 (composite) The pre/post relationship was shown
because of local requirements
Time of Concentration Calculations
Item
Mannings
n
Flow L
(ft)
25 Yr 24 Hr
Precip (in)
Land Slope
(%)
Travel
(hour)
Time
(minutes)
Existing
Sheetflow
0 150
100
565
44
0 113
68
Shallow concentrated
540
565
44
0 044
26
Channel flow
0
0 000
Total Travel Time, min
0 157
94
Post -development
Sheetflow
0 150
100
565
25
0 072
4 3
Shallow concentrated
0 013
430
565
2 6
0 028
1 7
Channel flow
0
0 000
0 0
Total Travel Time, min
0 100
6 0

PROCESS WATER CALCULATIONS
HARTLEY READY MIX SITE - BOULDER ROAD
PROCESS WATER
Item
Drainage
Area (ac)
Criteria
Water Volume
Vehicles
per Day
Gallons
per vehicle
Gallons
Cubic Feet
Vehicle Washing
Drum Cleaning
Material Wetting
(all materials saturated
surface dry - not to runoff)
----am
----
---
300
400
0
401
535
00
2
077
x20 r-,0t�
TOTAL WATER VOLUME
700
936
SIZE AND VOLUME OF TRUCK WASH PIT
Item
Length
Width
Avg Depth
Area
Volume
(ft)
(ft)
(ft)
A
(sf)
Ramp into Pit (depth varies)
2000
1000
083
20000
16667
Bottom of pit (depth constant)
6600
1000
167
66000
110000
Totals
8600
147
86000
126667
Summary Without rainfall, the Truck Wash Pit Area has a volume of 1 267 cubic feet
' compared to a process water volume of 94 cubic feet
The Area to Flow ratio would be very large of considering particle settlement
For a Hose at 5 gpm, for example, the ratio would be
' Area / Q ratio = 860 sf 1(5 gpm) * (60 sec/min)*(7 48 gal/cf) _
Area / Q ratio = 77 194 s/ft > 430 s/ft
This water flows to the Detention Pond and is not recycled, so it is subject to
emeeting the effluent conditions

PROCESS WATER CALCULATIONS
HARTLEY READY MIX SITE - BOULDER ROAD
COMMINGLED PROCESS WATER IN 25 YEAR 24 HOUR STORM
Item
Drainage
Criteria
Water Volume
Area (ac)
Vehicles
Gallons
Gallons
Cubic Feet
per Day
per vehicle
Rainfall — Runoff
�� PO 1'4''�
----
----
14521
1941 3
(25 year/24 hour storm)
Vehicle Washing
----
20
15
300
401
Drum Cleaning
----
20
20
400
535
Material Wetting
----
20
0
0
00
(all materials saturated
surface dry - not to runoff)
TOTAL WATER VOLUME
15221
20349
SIZE AND VOLUME OF TRUCK WASH PIT
Item
Length
Width
Avg Depth
Area
Volume
(ft)
(ft)
(ft)
(sf)
(so
Ramp into Pit (depth vanes)
2000
1000
083
20000
16667
Bottom of pit (depth constant)
6600
1000
167
66000
110000
Totals
8600
147
86000
126667
Summary With the 25 Year 24 hour rainfall, the Truck Wash Pit Area has a volume of
1,267 cubic fee compared to a commingled water volume of 2,035 cubic feet
The Area to Flow ratio is calculated for particle settlement based on peak runoff
plus ahose at 5 gpm, as shown
Q25=C*I*A=090*614in/hr*014acres =077cfs
(The Rational Method is used for simplicity, since the Routing
is provided based on HEC-1, and this is being used for
illustrative purposes)
Area 1 Q ratio = 860 sf/((5 gpm)/(60 s/m)1(7 48 gal/cf) + 0 77 cfs) = 860/0 781
Area 1 Q ratio = 1 101 s/ft > 430 s/ft
This water flows to the Detention Pond and is not recycled, so it is subject to
meeting the effluent conditions

' -SEDIMENT STORAGE CALCULATIONS
�HARTLEY READY MIX SITE -BOULDER ROAD
f
SEDIMENT STORAGE AND PERMANAENT POOL.
Item
Drainage
Criteria per Greensboro
Volume Provided at
Depth (in)
Volume (cf)
Elevation
Volume (cf)
Area (ac)
Drainage Area
368
Permanent Sediment Storage
368
0 125
1670
Stored in Forebay
87625
12660
Stored below Forebay
87625
5000
17660
TOTAL Stored
Temporary Sediment Storage
368
0
0
0
00
Permanent Water Storage
368
1 00
Rv = 0 05 + 0 009*(Imp%)
068
WQv = (1 0*RV*DA)/12
9031
87925
9726
*'* For 25 Year / 24 Hour Storm
565
*** Rv for 25 Yr / 24 Hr Storm
068
51028
TOTAL WATER VOLUME
114920
I
WET POND SIZING (BY CITY OF GREENSBORO CRITERIA)
Item
Summary
Drainage Area
368
acres
Built Upon Area
256
acres = 70%
Average Pond Depth
30
feet
Surface / Drainage Area Ratio
288
% **
Surface Area Re uired
4617
square feet
Surface Area Provided
5861
square feet
1 ** PER NCDENR BMP TABLE 10-1

STAGE -DISCHARGE CALCULATIONS
' HARTLEY READY MIX SITE -BOULDER ROAD
2 Year Drawdown Riser Size 1 5 inches
Orifice Coefficient 060
Weir Coefficient 30
invert (Rim) 879 25 msl
Secondary Drawdown Riser Size 2 0 inches
Orrfice Coefficient 060
Weir Coefficient 30
Invert (Rim) 880 70 msl
10 Year Drawdown Invert (Rim) 882 50
Riser Size 36 inches
Weir Coefficient 30
Barrel Barrel Size 240 inches
Mannings N 0 015
Invert In 87476
Invert Out 87412
Length 63 0 feet
Emergency Spillway Elevation 8835
Length 12 0 feet
Cw 30
2 Year Spillway
Seconda Spillway
10 Year -Weir
Barrel
Emer
Total
Elevation
Head on
Q
Head on
Q
Head
Q
Q -Chart
Q-Actual
Spillway
Q (cfs)
(msl)
Pipe (ft)
(cfs)
Pipe (ft)
(cfs)
(feet)
(cfs)
(cfs)
(cfs)
(cfs)
87925
000
000
000
000
87938
013
002
000
000
000
000
1700
002
000
0 021
87950
025
003
000
000
000
000
1740
003
000
0 030
87963
038
004
000
000
000
000
1780
004
000
0 036
87975
050
004
000
0 00
000
000
1820
004
000
0 042
87988
063
005
000
000
000
000
1860
005
000
0 047
88000
075
005
O 00
000
000
000
1900
005
000
0 051
88013
088
006
000
000
000
000
1938
006
000
0 055
88025
100
006
000
000
000
000
1975
006
000
0 059
88038
1 13
006
000
000
000
000
2013
006
000
0 063
880 50
1 25
007
000
000
000
000
2050
007
000
0 066
88063
138
007
000
000
000
0 DO
2088
007
000
0 069
88075
150
007
005
002
000
000
2125
009
000
0 090
88088
163
008
017
004
000
000
2163
012
000
0119
881 DO
1 75
008
030
006
000
000
2200
014
000
0 136
881 13
188
008
042
007
000
000
2263
015
000
0 149
881 25
200
008
055
008
000
000
2325
016
000
0 161
881 38
213
009
067
009
0 DO
000
2388
017
000
0 172
88150
225
009
080
009
000
000
2450
018
000
0 183
88163
238
009
092
010
000
000
2513
019
000
0 192
88175
250
009
105
Oil
000
000
2575
020
000
0201
88188
263
010
1 17
Oil
000
000
2638
021
000
0 210
88200
275
010
1 30
012
000
000
2700
022
000
0 218
88213
288
010
1 42
013
000
000
2738
023
000
0 226
88225
300
010
1 55
013
000
000
2775
023
000
0 233
88238
313
010
1 67
014
000
000
2813
024
000
0 240
88250
325
Oil
1 80
014
000
000
2850
025
000
0 247
88263
338
Oil
1 92
015
013
125
2888
1 50
000
1 504
88275
350
Oil
205
015
025
353
2925
380
000
3 795
88288
363
Oil
217
015
038
649
2963
676
000
6 760
88300
375
Oil
230
016
050
1000
3000
1027
000
10 270
88313
388
012
242
016
063
1397
3031
1425
000
14 250
88325
400
012
255
017
075
1836
3063
1865
000
18 651
88338
413
012
267
017
0 88
2314
3094
2343
000
23 434
88350
425
012
280
018
100
2827
3125
2857
000
28 572
88363
438
012
292
018
1 13
3374
3156
31 56
1 59
33 153
88375
450
013
305
018
1 25
38 05
3188
31 88
450
36 375
88388
463
013
317
019
1 38
3991
3219
3219
827
40 455
88400
475
013
330
019
1 50
41 68
3250
3250
1273
45228
884131
4881
013,
3 42
0191
1 63
4339
3281
3281
17791
50 598

DRAWDOWN TIME CALCULATIONS
HARTLEY-READY MIX SITE - BOULDER ROAD
Orifice Size 1 50 inches
Orifice Coefficient 060
Weir Coefficient 30
invert 879 25 msl Increment (feet) 0 125
Elevation
(msl)
Area
(sf)
Incremental
Volume
(cf)
Total
Volume
(cf)
Head on
Orifice
(ft)
Q
(cfs)
Time
(sec)
Total Time
(sec)
Total Time
(hours)
87925
5861
000
000
87938
6011
742
742
013
002
35518
35518
987
87950
6161
761
1503
025
003
25749
61267
1702
87963
6311
780
2282
038
004
21543
82810
2300
87975
6461
798
3081
050
004
19105
101915
2831
87988
6612
817
3898
063
005
17491
119406
3317
88000
6762
836
4733
075
005
16335
135740
3771
88013
6941
856
5590
088
006
15495
151235
4201
88025
7120
879
6469
1 00
006
14872
166107
4614
88038
7299
901
7370
1 13
006
14379
180486
5013
88050
7478
924
8293
1 25
007
13979
194465
5402
88063
7656
946
9239
1 38
007
13651
208117
5781
88075
7835
968
10207
1 50
009
10766
218883
6080
88088
8014
991
11198
1 63
012
8306
227188
6311
881 00
8193
1013
12211
1 75
014
7464
234653
6518
881 13
8394
1037
13248
1 88
015
6939
241592
6711
881 25
8594
1062
14309
200
016
6576
248168
6894
881 38
8795
1087
15396
2 13
017
6303
254470
7069
881 50
8996
1112
16508
225
018
6090
260560
7238
881 63
9196
1137
17645
238
019
5919
266479
7402
881 75
9397
1162
18807
250
020
5779
272258
7563
881 88
9597
1187
19994
263
021
5664
277922
7720
88200
9798
1212
21206
275
022
5567
283489
7875
882 13
10015
1238
22445
288
023
5489
288978
8027
88225
10231
1265
23710
300
023
5428
294406
81 78
88238
10448
1292
25002
313
024
5376
299781
8327
88250
10664
1319
26322
325
025
5332
305114
8475
88263
10881
1347
27668
338
1 50
895
306009
8500
88275
11097
1374
29042
350
380
362
306371
8510
88288
11314
1401
30443
363
676
207
306578
8516
88300
11530
1428
31870
375
1027
139
306717
8520
883 13
11750
1455
33325
388
1425
102
306819
8523
88325
11970
1482
34808
400
1865
79
306899
8525
88338
12190
1510
36318
413
2343
64
306963
8527
88350
12410
1537
37855
425
2857
54
307017
8528
88363
12629
1565
39420
438
3315
47
307064
8530
88375
12849
1592
41013
450
3638
44
307108
8531
88388
13069
1620
42633
463
4045
40
307148
8532
88400
13289
1647
44280
475
4523
36
307184
8533
* From Elevation 880 70 (1 5" orifice only) the Drawdown Time = 60 0 hours = 2 5 days
*' From Elevation 882 50 (8' and 1 5' orifices) the Drawdown Time = 110 4 hours = 4 6 days

-DETENTION POND CALCULATIONS
HARTLEY READY MIX SITE - BOULDER ROAD
Wet Detention Basin Volumes
Drainage Area 3 68 acres
Disturbed Area 0 00 acres
Design Percentage Impervious 697 %
Stage -Storage Data
Main Pond
Stage
Area sf
Incr V
Total V
87425
10
876 00
319
123
123
87600
2255
1287
1410
87700
3129
2692
4102
87800
4098
3614
7716
87900
5020
4659
12275
87925
5861
1360
13635
88000
6762
4734
18369
881 00
8193
7478
25846
88200
9798
8996
34842
88300
11530
10664
45506
88400
13289
12410
57915
Top of Dam
Sediment Volumes
Permanent (in)
Temporary (in)
Total
Volume Below Normal Pool
Temporary Water Quality Pool
Runoff from 1" Rainfall
Volume of Temporary Water Quality Pool
Item
Elev
Volume
PPE
TPE
880 70
87925
23455
13635
TWQ Volume 9820
5ed El WQ Pool
87610
88057
884 50 msl
0 125 "Dr A = 1670 cf
0 000 "Dist A = 0 cf
1670 cf
879 25 msl 13635 cf
0 676 in = 9031 cf
exceeds required 9031 cf

M
* FLOOD HYDROGRAPH PACKAGE (HEC-1)
* SEPTEMBER 1990
* VERSION 4 0
+ *
* RUN DATE 08/19/2009 TIME 16 39 21
+ *
Hartley9 out
X X
3CKXXX
D{ xxxxx
x
X x
x
x
x
xx
X X
X
X
x
7
xxxx
x
X30=
x
x x
x
x
x
x x
x
x
x
x
x x
xKXID=
xxxxx
xxx
+ +
* U S ARMY CORPS OF ENGINEERS
* HYDROLOGIC ENGINEERING CENTER
* 609 SECOND STREET
* DAVIS, CALIFORNIA 95616
* [phone]
+ +
THIS PROGRAM REPLACES ALL PREVIOUS VERSIONS OF HEC-1 KNOWN AS HEC1 (JAN 73), HECIGS, HECIDB, AND HECIKW
THE DEFINITIONS OF VARIABLES-RTIMP- AND-RTIOR- HAVE CHANGED FROM THOSE USED WITH THE 1973-STYLE INPUT STRUCTURE
THE DEFINITION OF-AMSKK- ON RM-CARD WAS CHANGED WITH REVISIONS DATED 28 SEP 81 THIS IS THE FORTRAN77 VERSION
NEW OPTIONS DAMBREAK OUTFLOW SUBMERGENCE , SINGLE EVENT DAMAGE CALCULATION, DSS WRITE STAGE FREQUENCY,
DSS READ TIME SERIES AT DESIRED CALCULATION INTERVAL LOSS RATE GREEN AND AMPT INFILTRATION
KINEMATIC WAVE NEW FINITE DIFFERENCE ALGORITHM
1
HEC-1 INPUT
LINE
ID
1 2
3 4 5
6
7
$ 9 10
1
ID
Boulder Road
- Wet Pond Stormwater Treatment
Facility
*DIAGRAM
2
IT
5 25DEC93
000 300
3
IO
5 0
4
JP
5
5
KK
DADRAINAGE
BASIN AT POND AREA= 5 77
ACRES=
0 00902
SQUARE MILES
6
BA
00902 44 1
7
KM
2 YEAR, 10 YEAR,
25 YEAR, 50 YEAR AND
100 YEAR STORM
(NRCS GUILFORD CO)
8
PH
0
0 36 0 69 1 46
1 54
1 88
2 32 2 78 3 50
9
LS
0 76
Page 1
PAGE 1

Hartley9 out
10 UD 0 157
11 KP 2
12 PH
0 50
1 04
2 08
2
95
3
51
3
64
4
26
5 20
13 KP 3
14 PH
0 55
1 18
2 36
3
26
3
91
4
16
4
89
5 65
15 KP 4
16 PH
0 63
1 32
2 67
3
67
4
38
4
75
5
50
6 60
17 KP 5
18 PH
0 83
1 80
3 70
4
80
5
70
6
90
7
68
9 36
19 KK POOL ROUTE THROUGH POND
20 RS 1 ELEV
879 25
21 SA 0 1346 0 1552
0 2018
0 2249
0 2647
0 3051
22 SE 979 25 880
881
882
883
884
23 SQ 0 0 036
0 069
0 12
0 14
0
25
1
50
6
76
14
25
28 57
24 SE 879 25 879 50
880 63
880 88
881 00
882
50
882
63
882
88
883
13
883 50
25 ZZ
1
SCHEMATIC DIAGRAM OF STREAM
NETWORK
INPUT
LINE (V) ROUTING (--->) DIVERSION OR
PUMP FLOW
NO ( ) CONNECTOR (<---) RETURN OF DIVERTED OR PUMPED
FLOW
5 DA
V
V
19 POOL
{***) RUNOFF ALSO COMPUTED AT THIS LOCATION
lxxxx+xx+xx++++x+++++++x+++++xxx*xxxxxxxxx
xx++++++*++*++++*++++*+++++++++++++++++
x x
x
*
* FLOOD HYDROGRAPH PACKAGE (HEC-1) *
*
U S
ARMY CORPS OF ENGINEERS
* SEPTEMBER 1990 *
*
HYDROLOGIC
ENGINEERING CENTER
* VERSION 4 0 *
*
609 SECOND STREET
* *
*
DAVIS, CALIFORNIA 95616
* RUN DATE 08/19/2009 TIME 16 39 21 *
*
[phone]
*xx++++x++++++++x+xxxxx+++x+xx+xx+*+*++++
++++xxxxxxxxxxxxxx+xxxxx++xxx*+++*+++++
Boulder Road - Wet Pond Stormwater Treatment Facility
3 IO OUTPUT CONTROL VARIABLES
IPRNT 5 PRINT CONTROL
IPLOT 0 PLOT CONTROL
Page 2

m m m = m
1
Hartley9 out
QSCAL 0 HYDROGRAPH PLOT SCALE
IT HYDROGRAPH TIME DATA
NMIN 5 MINUTES IN COMPUTATION INTERVAL
IDATE 25DEC93 STARTING DATE
ITIME 0000 STARTING TIME
NQ 300 NUMBER OF HYDROGRAPH ORDINATES
NDDATE 26DEC93 ENDING DATE
NDTIME 0055 ENDING TIME
ICENT 19 CENTURY MARK
COMPUTATION INTERVAL 08 HOURS
TOTAL TIME BASE 24 92 HOURS
ENGLISH UNITS
DRAINAGE AREA SQUARE MILES
PRECIPITATION DEPTH INCHES
LENGTH, ELEVATION FEET
FLOW CUBIC FEET PER SECOND
STORAGE VOLUME ACRE-FEET
SURFACE AREA ACRES
TEMPERATURE DEGREES FAHRENHEIT
JP MULTI -PLAN OPTION
NPLAN 5 NUMBER OF PLANS
JR MULTI -RATIO OPTION
RATIOS OF RUNOFF
1 00
PEAK FLOW AND STAGE (END -OF -PERIOD) SUMMARY FOR MULTIPLE PLAN -RATIO ECONOMIC COMPUTATIONS
FLOWS IN CUBIC FEET PER SECOND, AREA IN SQUARE MILES
TIME TO PEAK IN HOURS
OPERATION STATION AREA PLAN
RATIO 1
1 00
HYDROGRAPH AT
+ DA 01 1
FLOW
7
TIME
12 25
2
FLOW
13
TIME
12 25
3
FLOW
16
TIME
12 25
4
FLOW
19
TIME
12 17
RATIOS APPLIED TO FLOWS
Page 3

Hartley9 out
5
FLOW
30
TIME
12 17
ROUTED TO
+ POOL O1 1
FLOW
0
TIME
23 33
2
FLOW
4
TIME
12 92
3
FLOW
6
TIME
12 67
4
FLOW
11
TINE
12 42
5
FLOW
27
TIME
12 33
*�
PEAK STAGES
IN FEET **
1
STAGE
881 85
TIME
24 00
2
STAGE
882 74
TIME
12 92
3
STAGE
882 83
TIME
12 67
4
STAGE
883 02
TIME
12 42
5
STAGE
883 45
TIME
12 33
*** NORMAL END OF HEC-1 ***
Page 4

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MOREHEAD TOWNSHIP - GUILFORD COUNTY
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WELCOME, NC 27374
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