NCG070198_COMPLETE FILE - HISTORICAL_20130607

STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO.
/V uco 07D 191
DOC TYPE
\HISTORICAL FILE
❑ Itf01l'ITORill"G RE'POQTS
DOC DATE
❑�ollb D
YYYYM M DD

��`'A
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Pat McCrory Charles Wakild, P. E. John E. Skvarla, III
Governor Director Secretary
Dellinger Precast
Attn: Michelle Williams
8151 Webb Rd
Denver, NC 28037
June 7, 2013
Subject: NPDES Stormwater Permit Coverage Renewal
COC #NCG070198
Dear Permittee:
In response to your renewal application for continued coverage under Stormwater General Permit
NCG070000, the Division of Water Quality (DWQ) is forwarding herewith the reissued Certificate of Coverage
and stormwater General Permit. This permit is reissued pursuant to the requirements of North Carolina General
Statute 143-215.1 and the Memorandum of Agreement between the state of North Carolina and the U.S.
Environmental Protection Agency, dated October 15, 2007 (or as subsequently amended.) The following
information is included with your permit package:
• A new Certificate of Coverage
• A copy of the stormwater General Permit
• A copy of a Technical Bulletin for the General Permit
• Copies of the Discharge Monitoring Report (DMR) Form
• Copies of the Annual Discharge Monitoring Report Form (if applicable)
• Copies of the Qualitative Monitoring Report Form
The General Permit authorizes discharges of stormwater only, and it specifies your obligations with respect to
stormwater discharge controls, management, monitoring, and record keeping. Please review the new permit to
familiarize yourself with all changes in the reissued permit. Significant changes to the General Permit are
outlined in the attached Technical Bulletin.
Your coverage under the General Permit is transferable only through the specific action of DWQ. This permit
does not affect the legal requirements to obtain other permits which may be required by DENR, nor does it relieve
the permittee from responsibility for compliance with any other applicable federal, state, or local law, rule,
standard, ordinance, order, judgment, or decree.
If you have any questions regarding this permit package please contact the DWQ Stormwater Permitting Unit
at 919-807-6300.
Sincerely,
for Charles Wakild, P.E.
cc: DWQ Central Files
Stormwater Permitting Unit Files
1617 Mai[ Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: 9IM07-6300 Y FAX: [phone]
Internet www.ncwateroua&-org
An Equal Opportunity 1 Af mraUve Action Employer
NorthCarolina
Naturally

Certificate of Coverage
http://portal.nedenr.org/web/wq/ws/su/permi t-renewal
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES '
DIVISION OF WATER QUALITY
GENERAL PERMIT No. NCG070000
CERTIFICATE OF COVERAGE No. NCG070198
STORMWATER
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 Environnrtal Management Commission, and the Federal Water
Pollution Control Act, as amended,
Dellinger Precast Inc
is hereby authorized to discharge stormwater from a facility located at
Dellinger Precast
4531 N Hwy 16
Denver
Lincoln County
to receiving waters designated as Killian Creek, class C water(s) in the Catawba River Basin(s) in
accordance with the stonmwater pollution management requirements, monitoring and reporting
requirements, and other conditions set forth in Parts 1, 1I, III and IV of General Permit No. NCG070000 as
attached.
This certificate of coverage shall become effective June 1, 2013.
This Certificate of Coverage shall remain effective for the duration of the General Permit.
Signed this day .tune 1, 2013.
--P. _ ii 44--
V
for Charles Wakild, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
l of 1 5/23/2013 9:25 AM

L.
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Govemor Director
November 23, 2011
Mr. Gabe Dellinger
Dellinger Precast, Inc.
8151 Webbs Road
Denver, NC 28037
Subject: General Permit No. NCG070000
Dellinger Precast
nnr X A Irld-A^!l►1 no
t.Vl. LVV. 1\L%ffv 1U170
Lincoln County
Dear Mr. Delinger:
Dee Freeman
Secretary
In accordance with your application for a discharge permit received on October 12, 2011,
we are forwarding herewith the subject certificate of coverage to discharge under the subject state
— NPDES general permit. We are also withdrawing your NCG14 application to cover the same
facility per your request. This permit is issued pursuant to the requirements of North Carolina
General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the
US Environmental Protection Agency dated October 15, 2007 (or as subsequently amended).
Please take notice that this certificate of coverage 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 Management Act or any other federal or local governmental permit that may be
required.
If you have any questions concerning this permit, please contact Brian Lowther at
telephone number [phone].
t71AlVGrGlr, j////J�)
for Coleen H. Sullins
cc: Mooresville Regional Office
Central Files
Stormwater Permitting Unit Files
Wetlaads and Stomrwater Branch Ile
1617 Mail S-Vinp ranter, Ralp.inh. Nrvth Carolina 27RA-1617 ATQ—&1L.l��,..1' — —
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 i V Ul 111LLLL Vllll[t
Phone: [phone] FAX: 919M7-6494 i Customer Service: 1-877-623-6748 �aturr�L�1/
Internet www.nrwaterqua[4.org ff+/ f/

STATE OF NORTH CAROLINA
DFPARTTvfFNT OF FNVTRQNN[FNT AND NATTTRAT. RFCCIT TRC RC
DIVISION OF WATER QUALITY
GENERAL PERMIT NO. NCG070000
CERTIFICATE OF COVERAGE No. NCG070198
STORMWATER DISCHARGES
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Dellinger Precast, Inc.
is hereby authorized to discharge stormwater from a facility located at
Dellinger Precast
4531 N. Hwy 16
Denver, NC
Lincoln County
lU 10001 Y111g W0.LGlj UGS1r11aLGU aJ llli hail L1GGll, a Gl0.JJ t. WL1LGr 111 L11G l...GlL0.W V0. n1VGr 1J0.J111, 111
accordance with the effluent limitations, monitoring requirements, and other conditions set forth
in Parts I, If, III, IV, V, and VI of General Permit No. NCG070000 as attached.
This certificate of coverage shall become effective November 23, 2011.
This Certificate of Coverage shall remain in effect for the duration of the General Permit_
Signed this day November 23, 2011.
61;�
for Coleen H. Sullins., Director
Division of Water Quality
By the Authority of the Environmental Management Commission

LOCATION MAP:
f .
NCG070198
N
WE
S
Man Srala 1 iG nnn
M;x,
Dellinger Precast, Inc.
Dellinger Precast
Latitude: 350 32' 37" N
Longitude: 8111 03' 03" W
County: Lincoln
Receiving Stream: Killian Creek
Stream Class: C
kCu'ti+�:� w ►ir w.Iaij
161•
62
c.. ":a.. 1 ..a:.
IFU I �Lr LVclILIM

Lowther, Brian
From: Bou-ghazale, Samar
Sent: Tuesday, November 22, 2011 3:24 PM
To: Lowther, Brian
Subject: RE: SW General Permit NCG070198
I am sorry! It was too early for me. There are no impacts -to streams/wetlands on the proposed construction for the
subject site.
.:
Thanks,
Samar
From: Lowther, Brian
Sent: Tuesday, November 22, 2011 3:21 PM
To: Bou-ghazale, Samar
Subject: RE: SW General Permit NCG070198
Thanks Samar! I am assuming you meant to say there are no impacts to streams/wetlands? if so, I'll move forward with
issuing the permit.
Brian
From: Bou-ghazale, Samar
Sent: Tuesday, November 22, 2011 9:09 AM
To: Lowther, Brian
Subject: RE: SW General Permit NCG070198
pit
Good Morning Brian,
I visited the site yesterday and met with Shannon,Williams with Dellinger Precast. The construction of the wastewater
treatment facilities will not have any conflict with buffer requirements. Also, there is are impact to stream/wetlands.
Also, I gave a copy of the application to Peggy Finley with the Aquifer Protection Section in Mooresville, and according to
her there is no need for a recycle permit.
Please let me know if you need any additional info.
Thanks,
Samar
From: Lowther, Brian
Sent: Tuesday, November 08, 2011 4:55 PM
To: Bou-ghazale, Samar
Subject: SW General Permit NCG070198
Samar,
We've received an NOI from Dellinger Precast in Lincoln County for coverage under a NCG@7.
The site discharges to Killian Creek (C). The NOI is attached. I have also included the
information the engineer send in response totmyi.additional information request. As you may
remember this is the project that originaly`�applied`for a NCG14 but then decided to apply
for a NCG07 and recycle all their wastewater:'from the proposed batch plant. I have a large
site map I can forward you if you want-.`
1

Please let me know if the Mooresville Regional Office has any concerns about issuing this
facility a COC for this general permit, and are there any potential impacts to wetlands. It
we don't receive any objections, we'll issue .the:000 .in 30 days.
Thanks,
Rrian
I
�2
1\

AFT WIF
Division of Water Quality / Water Quality Section
NCDENRNational Pollutant Discharge Elimination System
kdm
Fl1ViRpryMErr Wo koiWw� R�54MiLE-�
NCG070000
NOTICE OF INTENT
FOR AGENCY USE ONLY
Date Received
Year j Month
I Da
Certificate of Coverage
FbTqDiq
Check # I Amount
11l IOp.
Permit si ned to
National Pollutant Discharge Elimination System application for coverage under General Permit
NCG070000:
STORMWATER DISCHARGES associated with activities classified as:
SIC' 32 Stone, Clay, Glass, and Concrete Products (except as specified below)
SIC" N/A Like activities deerned by DWQ to be similar in the process and/or the exposure of raw
materials, products, by-products, or waste materials
The following activities are specifically excluded from coverage under this General Perm'
D
SIC" 3273 Ready -Mixed Concrete
' Standard Industrial Classification Code >
ocr I �
(Please print or type)
1) Mailing address of owner/operator (address to which all permit correspondence will be maile7P�
Name Dellinger Precast, Inc.
Street Address 8151 Webbs Road
City Denver StateNC ZIP Code 28037
Telephone No. 704 483-2868 Fax:
E-mail Address [e-mail]
2) Location of facility producing discharge:
Facility Name
Facility Contact
Contact E-mail
Street Address
City
County
Telephone No.
Dellinger Precast, Inc.
Gabe Dellinger
[e-mail]
4531 N. Hwy 16
Denver
Lincoln
(704) _ 483-2868
3) Physical Location Information:
State'NC ui v.... 28307
Fax:
Please provide a narrative description of how to get to the facility (use street names, state road numbers, and
distance and direction from a roadway intersection). Take Hwy 150 West from Mooresville, Take Business
Hwy 16-South, Dellinger Precast will be on right approx. 1 mile
(A copy of a county map or USGS quad sheet with facility clearly located on the map is required to be submitted with this application)
4) Latitude 35'32'37.34 N Longitude 81`03'02.74 W (degrees, minutes, seconds)
5) This NPDES Permit Application applies to which of the following:
❑ New or Proposed Facility Date operation is to begin
Page 1 of 4
cinr11-999_n71408 Last Revised 7/14/2008

NCG070000 N.O.I.
® Existing
6) Standard Industrial Classification:
Provide the 4 digit Standard Industrial Classification Code (SIC Code) that describes the primary industrial
activity at this facility
SIC`COde:=3_ _2—
7) Provide a brief narrative description of the types of industrial activities and products manufactured at
this facility: Precast Catch Basins, Precast Manholes, Precast Septic Tanks
8) Discharge points / Receiving waters:
How many discharge points (ditches, pipes, channels, etc.) convey stormwater from the property? 2
9) Receiving waters:
What is the name of the body or bodies of water (creek, stream, river, lake, etc.) that the facility stormwater
discharges end up in? Killian Creek
If the site stormwater discharges to a separate storm sewer system, name the operator of the separate storm
sewer system (e.g. City of Raleigh municipal storm sewer).-
10) Does this facility have any other NPDES permits?
® No
❑ Yes
If yes, list the permit numbers for all current NPDES permits for this facility:
+11 Does *F'i4 f-.-ilit►, have any Non -Discharge permits (ex: recycle permits)?
1 �I vv..,
9 No
❑ Yes
If yes, list the permit numbers for all current Non -Discharge permits for this facility:
12) Does this facility employ any best management practices for stormwater control?
❑ No
X Yes
If yes, please briefly describe: Property utilizes a Skimmer Type Sediment Basin, grass lined swales and a
wet detention basin to filter stormwater prior to discharging from site_
13) Does this facility have a Stormwater Pollution Prevention Plan?
❑ No
IN Yes
If yes, when was it implemented? 8/30/2011
14) Are vehicle maintenance activities occurring at this facility?
® No ❑ Yes
15) Hazardous Waste:
a) Is this facility a Hazardous Waste Treatment, Storage, or Disposal Facility?
X No ❑ Yes
Page 2 of 4
cwi 1-?99_07140B Last Revised 7/14/2008

NCG070000 N.O.I.
b) Is this facility a Small Quantity Generator (less than 1000 kg. of hazardous waste generated per month) of
hazardous waste?
X No ❑ Yes
c) Is this facility a Large Quantity Generator (1000 kg. or more of hazardous waste generated per month) of
hazardous waste?- .
® No ❑Yes
d) If you answered yes to questions b. or c., please provide the following information:
Type(s) of waste-.
How is material stored:
Where is material stored:
How many disposal shipments per year:
Name of transport / disposal vendor. -
Vendor address:
16) Certification:
North Carolina General Statute 143-215.6 b (i) provides that:
Any person who knowingly makes any false statement, representation, or certification in any application, record, report, plan, or other
document filed or required to be maintained under this Article or a rule implementing this Article; or who knowingly makes a false
statement of a material fact in a rulemaking proceeding or contested case under this Article; or who falsifies, tampers with, of knowingly
renders inaccurate any recording or monitoring device or method required to be operated or maintained under this Article or rules of the
[Environmental Management] Commission implementing this Article shall be guilty of a Class 2 misdemeanor which may include a fine not to
exceed ten thousand dollars ($10,000).
I hereby request coverage under the referenced General Permit. I understand that coverage under this permit
will constitute the permit requirements for the discharge(s) and is enforceable in the same manner as an
individual permit.
I certify that I am familiar with the information contained in this application and that to the best of my
knowledge and belief such informatiurr is true, complete, and accurate.
Printed Name of Person Signing: Gary Dellinger
Title: President
Sign turc ofApplicant) (Date Signed)
Notice of Intent must be accompanied by a check or money order for $100.00 made payable to NCDENR
Final Checklist
This application will be returned as incomplete unless all of the following items have been included:
X Check for $100 made payable to NCDENR
X This completed application and all supporting documents
:9 Copy of county map or USGS quad sheet with location of facility clearly marked on map
Mail the entire package to:
Stormwater and General Permits Unit
Division of Water Quality
Page 3 of 4
Swi i-PPP-071408 Last Revised 7/14/2008

NCG070000 N.O.I.
1617 Mail Service Center
Raleigh; North Carolina 27699-1617
Note
The submission of this document does not guarantee the issuance of an NPDES Oermit.
For questions, please contact the DWO Central Office or Regional Office for your area.
DWQ Regional Office Contact Information:
Asheville Office ......
[phone]
Fayetteville Office ...
[phone]
Mooresville Office ...
[phone]
Raleigh Office ........
[phone]
Washington Office ...(252)
946-6481
Wilmington Office ...
[phone]
Winston-Salem ......
[phone]
Central Office .........(919)
807-6300
Page 4 of 4
-11 - n7I Anti Last Revised 7/14/2008

Narrative
utvr, 1 water Permitflnia
Dellinger Precast Inc.
General
Dellinger Precast inc. is located at 4531 North Hwy 16, Denver, NC 28037. The company
manufactures precast concrete products including, storm drainage boxes, manholes, septic tanks
and other specialty concrete products. The precast operation was started at 3 15 1 Webbs Road,
Denver, NC but was moved to the present location to expand the operations around 2001. The
operation at the Webb's Road site included a building in which the precast pours were made, a
concrete batch plant, materials storage and an operations building. The concrete batch plant was
not moved when the precast operation was moved to the Highway 16 site. Concrete is still
batched at the old site and transported to the Highway 16 site using concrete trucks. In order to
consolidate all precast operations and eliminate the need for on road transport tnlckS, a new
concrete batch plant is proposed at the Highway 16 site.
Existing Conditions at the Highway 16 site
The Highway 16 site contains about 37 acres and is located on the southwest side of the
highway. The site slopes from the highway in a southwest direction to Killian creek The land
was graded to accommodate the entire operations and consists primarily of four interconnected
areas, each on different elevations. The areas are depicted on the attached Sheet I as Area 1,
Area 2, Area 3 and Area 4. Area 1 contains the employee parking area, Area 2 contains the
precast building, asphalt parking area for transport trucks and small equipment as well as small
vehicles, anci gravel product storage area, Areas 3 and 4 contain primarily graveled product
storage. Practically, all storm water drainage from Area 1, approximately one-half of the
drainage from Area 2 and approximately one quarter of Area 3 drains to a wet basin constructed
as part of the erosion control measures when the land was grade. The discharge from the wet
basin is to a natural swale that eventually discharges to Killian Creels.
The remaining part of Area 2 drains to a dry earthen basin (built as part of the erosion control
features during the grading operation) through a culvert under the entrance road, a swale and a
series of pipes. A portion of the neighboring property also drains to the same swale and pipe as
Area 1 to the dry basin. The remaining part of Area 3 and all of Area 4 drain to the dry basin.
Storm water leaves the site at two locations depicted as Outfall 1 (from the wet basin) and
Outfall 2 (from the dry basin).
Concrete Batch Plant
tk new batch plant .s proposes t^ >kc installed in the northeastern part of Area 4. The location is
shown on Sheet 1. The plant will consist of a charging hopper, a conveyor to transport the sand
G:\Gary Dellinger\051-176 (Ready Mix Plant)\Documents\Narrative.docx Page 1 of 3

and aggregate to the charging hopper, the charging hopper, cement storage and air filter, and
other ancillary components. Aggregate and sand storage will be in concrete walled and concrete
floor open top bins. Storage of the aggregate can and will be minimized as the aggregate quarry
is within 1 mile of the site. Dellinger transports the aggregate and sand with Dellinger trucks
thereby controlling the delivery time and rate.
—Concrete trucks-will=be�used=to=transport=the=eomrete-from -the =batch=plant=to--the-precast _ .
building. From there the concrete is deposited in pour buckets and placed in the forms. The
trucks will return to the batch plant for reload and return to the precast building. When the
trucks return to the batch plant the concrete chute will be washed or wetted before charging at
the batch plant. After pouring is fizushed (usually at the end of day) the drums will be cleaned
with water. The wash out water from the drum and chutes will be discharged to a treatment
system.
Chutes and truck drum washout process
The treatment system for the chute and drums will consist of a series of tanks in which
the material will settle and finally to a treated water storage tank. From there the water
will be pumped to a yard hydrant where the water will be used to wash the chutes and
clean the drum. Thus the water will be recycled through the washout process. To
eliminate or considerably reduce the rainwater component, the washout treatment process
could be covered. The settled washout material will be removed from the tanks and
placed on a drying area. Water removed from the material will be recycled back to the
treated water iank of uie wash-Vout process. Water will placed in the truck drums that will
be used in the concrete batch as water accumulates to maintain the water balance.
Aggregate wet -down
NCDO T requires the aggregate to be wetted during hot weather, usually in June, July,
and August. The wetting is usually done by spraying water on the aggregate pile using a
sprinkler head. Drainage water from the wetting operation will be collected in a series of
tanks whereby the load of particulate will settle and the water recycled to the sprinkler
head. A manually operated valve on the discharge pipe of the last tank will be closed
during the wetting operation thereby eliminating the discharge of drainage to the storm
drainage system. The valve will be open all other times thereby allowing discharge of
rainfall drainage to the storm water system. Any excess water will be used in the
concrete batch operation thereby eliminating the discharge to surface water.
Permitting
Dellinger Precast, Inc. is proposing to be permitted under General permit 070000 which includes
Concrete Products. Conversations with permitting personnel indicates the use of this permit will
requires that all wastewater from the site not be discharged to the storm water system thereby
"owing s .-L-ce :rater disr.hara� The approach to the permitting is to consider all rainfall on
a�,.,wu�� �u���..
the site (including the roof top of buildings, covered product storage yard surfaces, product
inventory, sand and aggregate storage, vegetated slopes, etc.) will be considered storm water not
subject to non -discharge. Other water used that contacts materials used in the processing of
concrete will be recycled and not discharged to the surface waters-
concrete
Dellinger\051-176 (Ready Mix Plant)\Documents\Narrative.docx Page 2 of 3

Miscellaneous
If required to eliminate the idea that concrete will be used in anything other than the production
f recast roducts the tags of the concrete transport trucks used to transport from the batch
'U-UIL ]:.... VVII Uy rom nt7P�i CIl Ptln retP
plant to the precast �u��uu�� ,���. �., ��.v..... �...;..__.._-- . ca_nn�t-heTtanspofte off the higtiwaps
legally.
G:\Gary Dell inger\051-175 (Ready Mix Plant)\Documents\Narrative.docx Page 3 of 3

Sprinkler Head lip & ASS ,O
coon .OMM
_-
Rain lall nai ual1 .,m ,• MM
Excess water to MMM W �
I I batch water % � OU
.,, I_in�iid from drying
operation
LU U
C7 Q
0=
U
� CI)
QZ
-age Aggregate Storage Collected Solids LU
U w
© (DRainfall Drainage B on l forage areas O w
To ex. "dry" basin Q
NOTES:
1. Rainfall drainage is not considered wastewater
2. 25yr. storm 5.67"124 day -free board is 6"
z
3. NCDOT requires wetting of aggregate pile during dry hot weather considered to be
e
June, July, and August
i
y 3�
4. Drainage from aggregate wetting will be discharged to settling basin and returned
LL
ga 6N i
°
to sprinkler head
..: {;� f �;� �.,o ,;o„ will hn LEGEND
a. During discharge
ZN
�� a �Z "
wetting Opelaatio � +the valve pincerl
"A" ®Discharge Valve
Q �
z z v
6. Discharge valve will be open when wetting is not operating.
U.1
7. Drainage water from aggregate storage will be used in the concrete batching ®Recycle Pump
aS
as the .rater volume accumulates CCDrying Bed
8. Free board above the storm water free board will be a min of 6" ®Treatment System
i
o
®Aggregate Storage Drain
OA rEr ocz. 7olr ac No,: o51-
SHEET No.. __ of

Discharge to truck drum
to use in conc batch
as required to balance
Roof over tanks
Recycle
190 gpd 190 gpd
Chute & i 190 gpd
Drum washout
Primary Settling I Secondary Settling I Treated Storage
NOTES:
1. Based on concrete production of 100 cylday-using two trucks
2. Wash chute each load
3. Drum washout both trucks end of each day
4. Cover treatment tanks to shield from rainfall
Top above grade
Grade
Recycle Pump
Water back to
treated storage
Dried material
4190 1MMY 16 MM
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OATS' OC7., 2011
FILE NO.:
051-176
5NEET NO.
OF
I _

' 4190 Hwy. 16 South • Newton. NC 28658 • [phone] • Fax [phone]
November 3, 2011
Brian Lowther
NCDENR
Stormwater Permitting Unit
Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Re: Dellinger Precast
Brian,
Rfla�fgflw[RIM InC�
Uy
NOV — $ 2011
�'�QI1+4tITY
�allosriTEr
Truck Wash
The truck wash will be covered, and the grades around the structure will drain away from the
treatment area, therefore no rain water will be allowed into the basin. The basin is designed to
recycle the wash water used to rinse the concrete trucks. The volume of water pumped to wash
the trucks will be reintroduced into the basin and recycled. No additional water will be
introduced unless needed due to evaporation, additional water will only be introduced in order
to maintain the water level in the basin. When the basin is cleaned, the collected material will
be dewatered and distributed on the storage yard of the precast plant.
See attached recycle schematic showing inflow and outflow from basin.
Sand Storage
The sand storage will' not be wetted during summer months. The rain water that falls on the
sand storage is considered storm water and will be released to the storm water collection
system.
Aggregate Storage
The aggregate storage will be wetted during the summer months per NCDOT specifications. The
wastewater associated with the wetting will be treated in an attached basin. The wastewater
will be recycled to irrigate the aggregate storage. Rainwater that falls on the aggregate storage
is considered stormwater. This water will be released to the stormwater collection system. The
direction of flow will be controlled by 2 gate valves. The gate valve to the treatment basin will
remain closed until irrigation of the aggregate storage occurs. The gate valve to the stormwater
collection system will be closed during wetting and vice versa. When the basin is cleaned, the
collected material will be dewatered and distributed on the storage yard of -the precast plant.
I have attached calculations for the rainfall of the aggregate storage. The amount needed for
wetting of the aggregate pile is dependent on the amount of storage provided. The pump used
for irrigation will have a low water level switch that will cut off at a certain level (1'). Once the
irrigation water drains into the treatment basin, at a certain level, the pump will turn back on
CIVIL ENGINEERS & SURVEYORS

and pump to the irrigation head to repeat the process. The pump will be manually controlled
by the precast plant employees so that when irrigation of the aggregate storage is not
occurring, the pump will not run. If additional water is needed in the treatment basin to
operate the irrigation process, rainwater will be allowed to enter the treatment basin to be
used in the wetting process or water may be manually added to the basin depending on the
need for makeup water.
Should you have any questions, please feel free to contact me.
Thank you,
X':54
Miles A. Wright, PE

Sprinkler Head
Rainfall Rainfall Excess water to
batch water
Rainfall Drainage ` c� Liquid from drying
,operation
jI / T Ave
Sand Storage I /Aggregate Storage,
Collected Soilds_�
U Solids -spread
on storage areas
NOTES:
1. Rainfall drainage is not considered wastewater
2. 25yr. storm 5.67Y24 day -free board is 12"
3. NCDOT requires wetting of aggregate pile during dry hot weather considered to be
June, July, and August
4. Drainage from aggregate wetting will be discharged to settling basin and returned
to sprinkler head
5. During wetting operation the discharge valve "A" will be closed and valve "F" will be open
6. Discharge valve "A" will be open when wetting is not operating and valve T" will be closed
7. Drainage water from aggregate storage will be used in the concrete batching
as the water volume accumulates
8. Free board above the storm water free board will be a min of 12"
WRIGHT & ASSXATES
EN4YNCERS & SUR MTS
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Rainfall Calculations
Dellinger Precast
I I
Dimensions of Aggregate Stockpile Area
Length= 30 feet
Width= 33 feet
Area= 990 I SF
25 Year Rainfall = 5.67
inches
Rainfall Storage--467.78
CF

Discharge to truck drum
to use in conc batch
as required to balance
Roof over tanks
Recycle
190 gpd 190 gpd
Chute & I 190 gpd
Drum wasi IOU I 1
Primary Settling I Secondary Settling I Treated Storage
NOTES:
1. Based on concrete production of 100 cylday-using two trucks
2. Wash chute each load
3. Drum washout both trucks end of each day
4. Cover treatment tanks to shield from rainfall
Top above grade
vI—
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Lowther, Brian
From: Lowther, Brian
Sent: Thursday, October 20, 2011 11:52 AM
To: 'Miles Wright'
Cc: 'gabe@a dellingerprecast.com ; Parker, Michael
Subject: Addition Information Needed for Delliner Precast - NCG070198
Miles,
We received the NO] for Dellinger Precast on October 12, 2011 requesting to be covered under the general stormwater
permit NCG07. After a preliminary review of that information, I believe that this site can be permitted under the
NCG07 but more information is needed to the finish our review. As a reminder, to be covered under the NCG07 the
site cannot discharge wastewater. You are proposing to recycle all wastewater, however, please provide us with
calculations and dimensions of the recycle system. Please provide enough information to show the facility's treatment
system meets the design requirements of 15A NCACO2T .1000 (including holding the 25-year, 24-hour storm plus one
foot of freeboard), holds the working volume of your site, and does not discharge wastewater to surface waters. The
recycle system may be permitted by rule or you might need a permit from Aquifer Protection. If you have questions
about the recycle system requirements please contact DWQ's Aquifer Protection Section Land Application Unit Central
Office Supervisor or staff (1636 Mail Service Center, Raleigh, NC 27699-1636) for more information on obtaining the
necessary permits or approvals.
The requested information should be received by this Office prior to November 11, 2011, or the application could 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 send your request, including date by
which you expect to submit the required information; to my attention. The Division is allowed 90 days from the receipt
of a completed application to I.s+.Su- the mo rmit
Please reference the assigned project number on all correspondence. If you have any questions concerning this
matter feel free to contact me at [phone] or brian.lowtherCcpncdenr.gov.
Brian
Brian C. Lowther
Environmental Engineer
0._i ._..
NCDENR I DWQ I Stormwater Permitting Unit;;
1617 Mail 0, rvice Center; Raleigh, NC 27699-1617. =-
512 N. Salisbury St, Raleigh, NC 27604
Phone: [phone]
Email: hri�tn.lo��°ther(ir n�jenr.+�c>v
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E-mail correspondence to and from this address, may be subject to the North Carolina Public Records
Law and maybe disclosed to third parties.",:::=: ;.`

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1136..
EOPLES BANK
NEWTON; NC 28658
6648&S31 inMn6m

AFA
' • Division of Water Quality / Water Quality Section
NCDENRNational Pollutant Discharge Elimination System
Nvt�� Ur+aun., �QYI1TMEl+'f of
Ef WSOWH[ T +HD N� aEso RA
NCG070000
NOTICE OF INTENT
FOR AGENCY USE ONLY
Date Received
Year
Month
Da
Certificate of Covera e
O '7 011
Check #
Amount
111
$1Do
Permit AsSi ned to
National Pollutant Discharge Elimination System application for coverage under General Permit
STORMWATER DISCHARGES associated with activities classified as:
SIC 32 Stone, Clay, Glass, and Concrete Products (except as specified below)
SIC* NIA Like activities deemed by DWO to be similar in the process and/or the exposure of raw
materials, products, by-products, or waste materials
The following activities are specifically excluded from coverage under this General Prmit:
SIC 3273 Ready -Mixed Concrete ,Ar, — -
` Standard Industrial Classification Cade O ��
Cj I2 Z
(Please print or type) hlyR O�J
ST
1) Mailing address of owner/operator (address to which all permit correspondence will b
k
Name
Street Address
City
Telephone No.
E-mail Address
Dellinger Precast, Inc.
8151 Webbs Road
Denver
704 483-2868
[e-mail]
2) Location of facility producing discharge:
Facility Name
Facility Contact
Contact E-mail
Street Address
City
County
Telephone No.
Dellinger Precast, inc.
Gabe Dellinger
[e-mail]
4531 N. Hwy 16
Denver
StateNC ZIP Code 28037
Fax:
StateNC ZIP Code 28307
(704) _ 483-2868 Fax:
3) Phvsical Location Information:
Please provide a narrative description of how to get to the facility (use street names, state road numbers, and
distance and direction from a roadway intersection). Take Hwy 150 West from Mooresville, Take Business
Hwy 16 South, Dellinger Precast will be on right approx. 1 mile
(A copy of a county map or USGS quad sheet with facility clearly located on the map is required to be submitted with this application)
4) Latitude 35'32'37.34 N Longitude 81 003'02.74 W (degrees, minutes, seconds)
5) This NPDES Permit Application applies to which of the following:
ElNew or Proposed Facility Dale operation is to Uegi^
Page 1 of 4
SWU-222-071408 Last Revised 7/14/2008

NCG070000 N.O.I.
® Existing
6) Standard Industrial Classification: `
Provide the 4 digit Standard Industrial Classification Code (SIC Code) that describes the primary industrial
activity at this facility
SIC Code: _3_ _2J 7
7) Provide a brief narrative description of the types of industrial activities and products manufactured at
this facility: Precast Catch Basins, Precast Manholes, Precast Septic Tanks
8) Discharge points / Receiving waters:
How many discharge points (ditches, pipes, channels, etc.) convey stormwater from the property? 2
9) Receiving waters:
What is the name of the body or bodies of water (creek, stream, river, lake, etc.) that the facility stormwater
discharges end up in? Killian Creek
If the site stormwater discharges to a separate storm sewer system, name the operator of the separate storm
sewer system (e.g. City of Raleigh municipal storm sewer).
10) Does this facility have any other NPDES permits?
® No
❑ Yes
If yes, list the permit numbers for all current NPDES permits for this facility:
11) Does this facility have any Non -Discharge permits (ex: recycle permits)?
C9 No
❑ Yes
If yes, list the permit numbers for all current Non -Discharge permits for this facility:
12) Does this facility employ any best management practices for stormwater control?
❑ No
Is Yes
If yes, please briefly describe: Property utilizes a Skimmer Type Sediment Basin, grass lined swales and a
wet detention basin to filter stormwater prior to discharging from site.
13) Does this facility have a Stormwater Pollution Prevention Plan?
❑ No
ER Yes
It yes, when was it implemented? 8/30/2011
14) Are vehicle maintenance activities occurring at this facility?
® No ❑ Yes
15) Hazardous vraste:
a) Is this facility a Hazardous Waste Treatment, Storage, or Disposal Facility?
($ No ❑ Yes
Page 2of4
SWU-222-071408 Last Revised 7/14/2008

NCG070000 N.O.I.
b) Is this facility a Small Quantity Generator (less than 1000 kg. of hazardous waste generated per month) of
hazardous waste?
CK No ❑ Yes
c) Is this facility a Large Quantity Generator (1000 kg. or more of hazardous waste generated per month) of
hazardous waste?
® No ❑ Yes
d) If you answered yes to questions b. or c., please provide the following information:
Type(s) of waste:
How is material stored: _
Where is material stored:
How many disposal shipments per year:
Name of transport / disposal vendor: _
Vendor address:
16) Certification:
North Carolina General Statute 143-215.6 b (i) provides that:
Any person who knowingly makes any false statement, representation, or certification in any application, record, report, plan, or other
document filed or required to be maintained under this Article or a rule implementing this Article; or who knowingly makes a false
statement of a material fact in a rulemaking proceeding or contested case under this Article; or who falsifies, tampers with, or knowingly
readers inaccurate � „o;ding or monir.,ring device or method required to be operated or maintained under this Article or rules of the
any r� y,,, .� -----
[Environmental Management] Commission implementing this Article shalt be guilty of a Class 2 misdemeanor which may include a fine not to
exceed ten thousand dollars ($10,000).
hereby request coverage under the referenced General Permit. I understand that coverage under this permit
will constitute the permit requirements for the discharge(s) and is enforceable in the same manner as an
individual permit.
1 certify that I am familiar with the information contained in this application and that to the best of my
knowledge and belief such information is true, complete, and accurate.
Printed Name of Person Signing: Gary Dellinger
Title: President
0•lb tl
(Signature of -Applicant) (Date Signed)
Notice of Intent must be accompanied by a check or money order for $100.00 made payable to NCDENR
Final Checklist
This application will be returned as incomplete unless all of the following items have been included:
IR Check for $100 made payable to NCDENR
® This completed application and all supporting documents
9 Dopy of county ITiap or U01uS quad s1 ec t '-Otlh ]OS',.'.tf.^.n of fa!rllit,y clearly m2rked on maD
Mail the entire package to:
Stormwater and General Permits Unit
Division of Water Quality
Page 3 of 4
SWU-222-071408 Last Revised 7/14/2008

NCG070000 N.Q.I.
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Note
The submission of this document does not guarantee the issuance of an NPDES permit.
For questions, please contact the DWO Central Office or Regional Office for your area.
DWQ Regional Office Contact Information:
Asheville Office ......
[phone]
Fayetteville Office
... [phone]
Mooresville Office
... [phone]
Raleigh Office ........
[phone]
Washington Office
...[phone]
Wilmington Office ...
[phone]
Winston-Salem ......
[phone]
Central Office .........
[phone]
Page 4 of 4
SWt!-222-071408 Last Revised 7/14/2008

Narrative
Storm water Permitting
Dellinger Precast Inc.
October 10, 2011
General
Dellinger Precast inc. is located at 4531 North Hwy 16, Denver, NC 28037. The company
manufactures precast concrete products including, storm drainage boxes, manholes, septic tanks
and other specialty concrete products. The precast operation was started at 3151 Webbs Road,
Denver, NC but was moved to the present location to expand the operations around 2001. The
operation at the Webb's Road site included a building in which the precast pours were made, a
concrete batch plant, materials storage and an operations building. The concrete batch plant was
not moved when the precast operation was moved to the Highway 16 site. Concrete is still
batched at the old site and transported to the Highway 16 site using concrete trucks. In order to
consolidate all precast operations and eliminate the need for on road transport trucks, a new
concrete batch plant is proposed at the Highway 16 site.
Existing Conditions at the Highway 16 site
The Highway 16 site contains about 37 acres and is located on the southwest side of the
highway. The site slopes from the highway in a southwest direction to Killian creek. The land
was graded to accommodate the entire operations and consists primarily of four interconnected
areas, each on different elevations. The areas are depicted on the attached Sheet 1 as Area 1,
Area 2, Area 3 and Area 4. Area 1 contains the employee parking area, Area 2 contains the
precast building, asphalt parking area for transport trucks and small equipment as well as small
vehicles, and gravel product storage area, Areas 3 and 4 contain primarily graveled product
storage. Practically, all storm water drainage from Area 1, approximately one-half of the
drainage from Area 2 and approximately one quarter of Area 3 drains to a wet basin constructed
as part of the erosion control measures when the land was grade. The discharge from the wet
basin is to a natural swale that eventually discharges to Killian Creek.
The remaining part of Area 2 drains to a dry earthen basin (built as part of the erosion control
features during the grading operation) through a culvert under the entrance road, a swale and a
series of pipes. A portion of the neighboring property also drains to the same swale and pipe as
Area 1 to the dry basin. The remaining part of Area 3 and all of Area 4 drain to the dry basin.
Storm water leaves the site at two locations depicted as Outfall 1 (from the wet basin) and
Outfall 2 (from the dry basin).
Concrete Batch Plant
e nPtxr batch n..ant Is nronn¢erl to he installed in the northeastern part of Area 4. The location is
shown on Sheet 1. The plant will consist of a charging hopper, a conveyor to transport the sand
G:\Gary Dellinger\051-175{Ready Mix Plant}\Documents\Narrative.docx Page 1 Qf 3

and aggregate to the charging hopper, the charging hopper, cement storage and air filter, and
other ancillary components. Aggregate and sand storage will be in concrete walled and concrete
floor open top bins. Storage of the aggregate can and will be minimized as the aggregate quarry
is within 1 mile of the site. Dellinger transports the aggregate and sand with Dellinger trucks
thereby controlling the delivery time and rate,
Concrete trucks will be used to transport the concrete from the batch plant to the precast
building. From there the concrete is deposited in pour buckets and placed in the forms. The
trucks will return to the batch plant for reload and return to the precast building. When the
trucks return to the batch plant the concrete chute will be washed or wetted before charging at
the. batch plant. After pouring is finished (usually at the end of day) the drums will be cleaned
with water. The wash out water from the drum and chutes will be discharged to a treatment
system_
Chutes and truck drum washout process
The treatment system for the chute and drums will consist of a series of tanks in which
the material will settle and finally to a treated water storage tank. From there the water
will be pumped to a yard hydrant where the water will be used to wash the chutes and
clean the drum. Thus the water will be recycled through the washout process. To
eliminate or considerably reduce the rainwater component, the washout treatment process
could be covered. The settled washout material will be removed from the tanks and
placed on a drying area. Water removed from the material will be recycled back to the
treated water tank of the washout process. Water will placed in the truck drums that will
be used in the concrete batch as water accumulates to maintain the water balance.
Aggregate wet -down
NCD0.1 Ile tC to be #Arl rail nR of �Neather, usually in June_ July,
1Vl.1JV 1 rG[lU1rGs t11G [tgglegaLC+ W vi. YYeLtVLL u�..r;ii4 h , ��_�
and August. The wetting is usually done by spraying water on the aggregate pile using a
sprinkler head. Drainage water from the wetting operation will be collected in a series of
tanks whereby the load of particulate will settle and the water recycled to the sprinkler
y h_ d___L� if the last t.,,,1T v dill he closed
head. A manually operated valve on ti1G CF1JLl�rge pipe o� u�� ���< «.�.,.�
during the wetting operation thereby eliminating the discharge of drainage to the storm
drainage system. The valve will be open all other times thereby allowing discharge of
rainfall drainage to the storm water system. Any excess water will be used in the
concrete batch operation thereby eliminating the discharge to surface water.
Permitting
Dellinger Precast, Inc. is proposing to be permitted under General permit 070000 which includes
Concrete Products. Conversations with permitting personnel indicates the use of this permit will
requires that all wastewater from the site not be discharged to the storm water system thereby
allowing surface water discharge. The approach to the permitting is to consider all rainfall on
the site (including the roof top of buildings, covered product storage yard surfaces, product
inventory, sand and aggregate storage, vegetated slopes, etc.) will be considered storm water not
subject to non -discharge. Other water used that contacts materials used in the processing of
.12 11 b ,--led and not discharged to the surface waters.
concre« -Will �e re. y.11— t'__
G:\Gary Dellinger\051-176 (Ready Mix Plant)\Documents\Narrative_docx Page 2 of 3

Miscellaneous
If required to eliminate the idea that concrete will be used in anything other than the production
of precast products, the tags of the concrete transport trucks used to transport from the batch
plant to the precast building will be removed so concrete cannot be transported on the highways
legally.
GAGary Dellinger\051-176 (Ready Mix Plant)\Documents\Narrative.docx Page 3 of 3

Sprinkler Head Now a,S,TU
Oman .UMM
Rainfall Rainfall Excess water to momWC 2M MM
batch water rS,aF�
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T o ex. "dry" basin I Q U�,
NOTES:
1. Rainfall drainage is not considered wastewater
2. 25yr. storm 5.67"Q4 day -free board is 6" z_
3. NCDOT requires wetting of aggregate pile during dry hot weather considered to be
June, July, and August
4. Drainage from aggregate wetting will be discharged to settling basin and returned LU i5N x
to sprinkler head d0: z2
5. During wetting operation the discharge valve "A" will be closed LEGEND aLU ,
6. Discharge valve "A" will be open when wetting is not operating. QDischarge Valve
7. Drainage water from aggregate storage will be used in the concrete batching ©Recycle Pump ao �$
as the water volume accumulates ©Drying Bed F
8. Free board above the storm water free board will be a min of 6" (DTreatment System U)
pA(E: OCr. 20II nLE NO.: O�
Aggregate Storage Drain
sHEEr Na _ OF

Discharge to truck drum
to use in conc batch
as required to balance
Roof over tanks
Recycle
190 gpd 190 gpd
Chute & I j 190 gpd
Drum washout 1
Primary Settling I Secondary Settling I Treated Storage
NOTES:
1. Based on concrete production of 100 cy/day-using two trucks
2. Wash chute each load
3. Drum washout both trucks end of each day
a. Cover treatment tanks to shield from rainfall
Top above grade
Grade
Recycle Pump
Water back to
treated storage
Dried material
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