NCG140416_MONITORING INFO_20190705

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STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO.
G �y D III
DOC TYPE
❑ HISTORICAL FILE
C MONITORING REPORTS
DOC DATE
❑ D U
YYYYMMDD

TIER I PERMIT COMPLIANCE INSPECTION
GOBBLE CONCRETE COMPANY, INC.
LEXINGTON, NORTH CAROLINA
As required by General Stormwater Permit No. NCG140416, a compliance
evaluation was conducted on June 4, 2019 in response to the stormwater
analytical parameters exceedance. Present during the inspection were:
Pau W. Spangenberg, Director of Environmental Compliance, Mid Atlantic
Chris Garrison, Vice President RECEIVED
AREAS OF INSPECTIONS
JUL 0 6 2019
Areas where industrial activities are exposed to stormwater. CENTRAL FILFS
a) Batch Plant Wash -down Area: QtNR SECT/ N
The wash -down area is impervious and drains through two catchment basin
are equipped with weirs to filter out sediment and contaminants before be
discharge from the outfall. This area has the potential of impacting
stormwater.
b) Aggregate Storage Piles:
The aggregate storage piles are impervious and drain through two catchment
basins before discharging from the outfall. The aggregate is segregated and
contained in berries to minimize sediment run-off. This area has the potential
of impacting stormwater.
c) Used Machinery Storage Area.
The used machinery storage area is impervious and drains to the outfall.
There were son signs of spills and leaks as there was no staining. This area
has the potential of impacting stormwater.
d) Commercial Vehicle Storage Area:
There was free of spills and leaks as there was no staining. The area is
impervious and drains to the stromwater catchment basin prior to discharge.
This area has a potential of impacting stormwater.
Mid Atlantic
Engineering & Environmental Solutions

e) Compressor Area:
The compressor area was primarily maintained. A very minor amount of oil
residue was observed. The area was impervious and sheltered from
stormwater and would therefore not likely impact stromwater:
f) Chemical Storage Area:
The chemical are stored inside a building. No obvious signs of leaks or
discharges from the building. The area was impervious and sheltered from
stormwater and would therefore not likely impact stromwater.
g) Deiseal Fuel storage and Loading/Unloading Area:
The area was primarily maintained. A minor amount of debris and staining
from commercial vehicles was visible. The area has the potential of
impacting stormwater.
h) Waste concrete/aggregate storage pile Area:
The area is impervious, however a berm has been implement around the
storage pile to prevent sediment from impacting stormweater. The area has
the potential of impacting stormwater. The area drains to two catchment
basins before discharging from the outfall.
SUMMARY
With the exception of minor amounts of oil seepage from the yard equipment,
the following were not found during the inspection:
a) leaks or spills from equipment, drums, barrels, or containers
b) off -site tracking of industrial materials
c) tracking or blowing of raw, final, or waste materials; or
d) evidence or, or the potential for, pollutants entering the drainage system.
EVALUATION
Analytical monitoring results from sampling conducted on May 23, 2019
indicated the following exceedances.
a. Results
Date
Parameters
Benchmark
Outfall1
12/22/17
pH
6-9
9.6
MAL
Mid Atlantic
Engineering & Environmental Solutions

b. There is no apparent cause of the pH levels. During the inspection there
contributing factor were the use of chemicals used in themanufacturing
process of concrete, however these chemical are secured in a storage build
with access to authorized personnel only, automatically meter to prevent over
mixing and miss usage. No action related to the elevated pH levels is
recommended at this time.
c. Structural BMP's present at the facility include secondary containment,
catchment basins, weirs, erosion control, and raw material barriers. Non-
structural BMP's include the minimization of outdoor storage, the frequent
disposal of accumulated wastes, and the elimination of any oily wastes.
These structural and non-structural BMP's appear to be adequate.
d. The stormwater discharge outfall was inspected. There was no evidence of a
buildup of sediment or erosion preceding the outfall. No other non-
stormwater discharges were observed of impact at the outfall.
RECOMMENDATIONS
1) Schedule more frequent management of used equipment to minimize
the exposure to stormwater.
2) Schedule more frequent removal of waste concrete and aggregate to
minimize the potential to impact stromwater.
3) Increase maintenance activities on the clean out of the catchment
basins and weirs.
No evidence was found that the current SWPPP has any deficiencies. No changes
to the SWPPP are recommended at this time. All current initiatives appear adequate
to meet the goals of the SWPPP. Note that the SWPPP was updated on 3/21/2019,
before the date that the inspection was conducted.
CERTIFICATION
This inspection did not reveal any violations of the permit. No areas of non-
compliance with the SWPPP were noted.
Certified by:
Name:11L4 *OKA7' Date:61/19
Title: fierr�a�,�ta/ aree f%ir 4', leV44 as6v 47"h f
Vlol Atlantic
Engineering & Environmental Solutions

STORMWATER FACILITY INSPECTION FORM
Facility Name:
Location:
Certification of Coverage No.: NCG140416
Gobble Concrete Company, Inc.
Lexington, North Carolina
Expires: 6/30/2022
Number of
Inspector's Name:
e:
Outfalls:
T5/2t3/19
17
Paul W. Spangenberg
Con Ing Areas
Evidence of pollutants entering system (circle one): Yes No
If yes, describe:
Areas of potential pollutants entering system:
Describe: Wash -down area
Control measures present (circle one): es No
If yes, describe:
Retention basin/weir
Additional control measures needed (circle one): Yes No
If yes, describe:
Sediment and erosion control measures present (circle one): Yes No
If yes, describe:
Describe any new structural stormwater management measures:
None
Potential Pollutant Areas
Describe any loading/unloading operations:
Trucking, Tank Truck
Describe any outdoor storage activities:
Wood Pallets, Scrap Metal, storage piles, Solid waste dumpsters, used equipment
Describe any outdoor manufacturing or processing activities:
None
Describe and dust or particulate generating areas:
None
Describe any onsite waste disposal activities:
None
Significant VAks or Spills
Any reportable spills or leaks in the past year (circle one): Yes No
If yes, date: Impact on stormwater system(s):
Certification
By this signature I certify that this report is accurate and complete to the best of my knowledge:
Inspectors Signature: PoeV. S,haoryBKY/Pll -

RAIN EVENT DATA
FACILITY: Gobble Concrete Company, Inc.
ADDRESS: 202 Leonard Road
Lexington, NC 28557
CONTACT PERSON: Chris Garrison TELEPHONE: [phone]
STORM EVENT INFORMATION
DATE
YEAR
MONTH
DAY
2019
5
23
HOURS
MINUTES
DURATION
24
00
PRECIP.
AMOUNT (IN.)
0.15
RUNOFF
0.008
VOL. (M/GAL.)
DAYS
HOURS
PRECEDING
EVENT
3
0
PRINCIPLE EXECUTIVE OFFICER OR AUTHORIZED AGENT
PRINT
SIGNATURE
DATE
Paul W. Spangenberg
I to o wAy
//9
5/23/19
4.5 Acres - Sq. Ft. 189525 x 0.15 = 13428 x.0833 = 1118.6 x 7.48 = 8367.2 / 1000000 = 0.008 mg

STORMWATER DISCHARGE OUTFALL (SDO)
QUALITATIVE MONITORING REPORT
Certification of Coverage No.:
Facility Name:
County:
Permit No: NCG140416
Gobble Concrete Company, Inc.
Davidson
Expires: 6/30/2022
Lexington, North Carolina
Inspector Name:
Date of Inspection:
Paul W. S an enber
5/23119
OUTFALL DESCRIPTION
Outfall No.:
Structure (pipe, ditch, etc.):
Receiving Stream:
1
Ditch
Tributary to Leonard Creek
Describe the industrial activities that occur within the outfall drainage area:
Concrete batch plant
Color
Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint (light, medium, dark) as descriptors:
Clear
Odor
Describe any distinct odors that the discharge may have (i.e. smells strongly of oil, weak chlorine odor, etc.):
None
Clarity
Choose the number which best describes the clarity of the discharge where 1 is clear and 10 is very cloudy (circle one):
O2 3 4 5 6 7 8 9 10
Floating Solids
Choose the number which best describes the amount of floating solids in the stormwater discharge where 1 is no solids and 10 is
the surface is covered in floating solids (circle one):
O2 3 4 5 6 7 8 9 10
Suspended Solids
Choose the number which best describes the amount of suspended solids in the stormwater discharge where 1 is no solids and 10
is extremely muddy (circle one):
0 2 3 4 5 6 7 8 9 10
Foam
Is there any foam in the stormwater discharge (circle one)?: Yes N
Oil Sheen
Is there an oil sheen in the stormwater discharge (circle one)?: Yes No
Erosion Deposition
Is there evidence of erosion or deposition at the outfall? (circle one): Yes No
If yes, list and describe:
Other
Is there other obvious indicators of stormwater pollution in the stormwater discharge (circle one): Yes No
If yes, list and describe:
Rain Event
Was this a Representative Storm Event? X Yes _ No Total Event Precipitation (Inches). 0.15
A measurable storm event is a storm event that results in an actual discharge from the permitted site outfall. The previous measurable storm event
must have been at least 72 hours prior.
Certification
By this signature 1 certify that this report is accurate and complete to the best of my knowledge:
Inspector's Signature: ;Dmd 70. .S

461'RISM
=OlAee MRIE& INC
Full -Service Analytical &
Environmental Solutions
Mid -Atlantic Associates, Inc. - Raleigh
Paul Spangenberg
409 Rogers View Court
Raleigh, NC 27610
NC certification No. 402
NC Drinking Water Cart No. 37735
SC Certification No. 99012
Project: Gobble Concrete (Lexington, NC)
Lab Submittal Date: 05/23/2019
Prism Work Order: 9050422
Case Narrative
5/30/19 12:04
This data package contains the analytical results for the project identified above and includes a Case Narrative, Sample
Results and Chain of Custody. Unless otherwise noted, all samples were received in acceptable condition and processed
according to the referenced methods.
Data qualifiers are flagged individually on each sample. A key reference for the data qualifiers appears at the end of this case
narrative.
Please call if you have any questions relating to this analytical report.
Respectfully,
PRISM LABORATORIES, INC.
a,j
Angela D. Overcash
VP Laboratory Services
Data Qualifiers Key Reference
HT
Sample received and analyzed outside of the hold time,
BRL
Below Reporting Limit
MDL
Method Detection Limit
RPD
Relative Percent Difference
Reviewed By Angela D. Overcash
VP Laboratory Services
Results reported to the reporting limit. All other results are reported to the MDL with values between MDL and
reporting limit indicated with a J.
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-8001529-6364 - Fax: [phone]

micur
R'R I S M I Environmental
al Solutions
4
Sample Receipt Summary
t— e.xu.em.ara smmtoe. 05/30/2019
ueon.mms ixc
Prism Work Order: 9050422
Client Sample ID Lab Sample ID Matrix Date/Time Sampled Daterrime Received
Run off Water 9050422-01 Water 05/23/19 8:30 05/23/19 12:57
Samples were received in good condition at 3.2 degrees C unless otherwise noted.
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529.6364 - Fax: [phone]

i
Laboratory Report
Enrironmantal Solutions
J'�®rr"RISM I FullEronmea AnalyticalLions
05/30/2019
tuw�me> mG
Mid -Atlantic Associates, Inc. - Raleigh
Project: Gobble Concrete (Lexington,
Client Sample ID: Run off Water
Attn: Paul Spangenberg
NC)
Prism Sample ID: 9050422-01
409 Rogers View Court
Prism Work Order: 9050422
Raleigh, NC 27610
Sample Matrix: Water
Time Collected: 05/23/19 08:30
Time Submitted: 05/23/19 12:57
Parameter
Result Units Report MDL
Dilution Method Analysis Analyst
Batch
Limit
Factor Date/Time
ID
General Chemistry Parameters
pH
9.4 HIT pH Units
1 'SM4500-H B 5124119 16:36 CBM
P9E0486
Total Suspended Solids
29 mg/L 5.0 0.70
1 'SM2540 D 5128119 16:30 CBM
P9E0485
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]

,PRISM I Full -Service Analytical &
L1 C_ Evircnmental Solutions
�/uew.o„:n wn
Mid -Atlantic Associates, Inc. - Raleigh
Attn: Paul Spangenberg
409 Rogers View Court
Raleigh, NC 27610
General Chemistry Parameters - Quality Control
Analyte
P9E0485 - NO PREP
Project: Gobble Concrete (Lexington,
INC)
Level II QC Report
5/30/19
Prism Work Order: 9050422
Time Submitted: 5/23/2019 12:57:00PM
Reporting Spike Source %REC RPD
Result Limit Units Level Result %REC Limits RPD Limit Notes
Blank (P9E0486-BLK1) Prepared & Analyzed: 05/28/19
Total Suspended Solids BRL 5.0 mg/L
LCS (P9E0485-BSI) Prepared & Analyzed: 05/28/19
Total Suspended Solids 460 5.0 mg1L 477.0 95 90-110
Batch P9E0486 - NO PREP
LCS (P9E0486-BS1) Prepared & Analyzed: 05/24/19
pH 6.80 pH Units 6.880 98.8 98.5-101.5
This report should not be reproduced, except in its entirely, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-8001529-6364 - Fax: [phone]

P R I S M I Full -Service Analytical s
Environmental Solutions
�l,i-1 �iAeorurowes Ixc
449 Springbrook Road • Charlotte, NC 28217
Phone [phone].E • Fax: 7M525-0409
e: Client Company Namab b it eor�[/'..tti
Report To/Contact Name: /�.. la
Reporting Address: 2 L= rr.-ei 2-i
CHAIN OF CUSTODY RECORD
PAGE_ OF _ QUOTE a To eNSURE PROPER e1WNOI
Protect Name:
Short Hold Analysis: (Yes) (No) UST Project: (Yes) (NO)
*Please ATTACH any project specific reporting (QC LEVEL 1 II 111 IV)
provisions and/or QC Requirements
1--i— T--
Address:
YES NO N/A
RSam eserved
INTACT upon animi7
PROPER
ON PRESERVATIVES
—
PROPER PRESERVATIVES Intllnted?
Received WITHIN HOLDING TIMES?
CUSTODY SEALS'INTACT7
VOLATILES reed WIOUT HEADSP
PROPER CONTAINERS used?_
Phone: 3>6 '2—y`1 3JZ I Fax (Yes) (No): Purchase Order NoJBllling Reference TO BE FILLED IN BY CLIENT/SAMPLING PERSONNEL.
Email Address. 6oli b Ic C ",en r 7,4E �/, kw . te) ` Requested Due Date O 1 Day ❑ 2 Days O 3 Days O 4 Days ❑ 5 Days Certificatlon: NELAC ' DOD_ FL_ NC_
EDD Type: PDF_Excel _Other - "Working Days" ❑ 6-9 Days O Standard 10 days O �h Work oust Be
SC_ OTHER
Site Location Name: f u 6 I= C o,.c r Samples recelved after 14:00 will be processed next business day.
Site Location Physical Address: % d7 L ^ <O a k,c 4� Turnaround time is based on business days, excluding weekends and holidays. Water Chlorinated: YES_ NO_
(SEE REVERSE FOR TERMS a CONDITIONS REGARDING SERVICES Sample lcedUpon Coliectlon: YES
RENDERED BY PRISM LABORATORIES, INC. TO CLIENT) P
N/A
NO
TIME MATRIX SAMPLE CONTAINER ANALYSIS REQUESTED PRISM
CLIENT DATE COLLECTED (SOIL, PRESERVA• REMARKS LAB
SAMPLE DESCRIPTION COLLECTED I MILITARY WATER OR 'TYPE SIZE TiVEs v\T ID NO.
HOURS SLUDGE) SEE BELOW NO
pnd�•�waYYr.�
5'� 4
ti83J
`9
01
�'- � � 4e- GCt— Gad ble-G
Sampler's Signature �� Sampled By (Print Name) CJa r" (filiation
Upon relinquishing, this Chain of Custody Is your authorization for Prism to proceed with the analyses n requested above. Any changes must be
submitted In writing to the Priam Project Manager. There will be charges for any changes after analyses have been Initial"d.
v1 5 0 By'. (signetura) _ R .(lImeturo) Additional Comments:
Z3 �Z:s
Rail has By: (SlDr,ewre) s By: (SlyneWreJ fp
Site Arrival Time:
Site Departure Time:
Field Tech Fee:
elinquished T. (Sig -cam m a aM
Mileage:
Methado Npmenc NOTE: ALL SAMPLE COOLERS SHOULD BE PED SN Wmi CU ATIONTOTNELABORATORY. C r pNo,
LESARENOTACCEPTEDANOVERIFIEDAGAINSTCOCUNnLRECEiVE ELABORATORY.
" oSoLtZ1,
Q Fed Ex Dun arc4erwmd ❑ Prbm Field Savke ❑ Other
NDWATER: I TE: I I NC I LANDFILL CERCLA 1OTHER:
S.CNSCO❑ NC OIOC ❑ NO SCO NCSCaNC ❑SO UOSC ONC ❑SC Cl NC O SC 0NC O SC
REENERES
O ❑
'CONTAINER TYPE CODES: A= Amber C = Clear G= Glass P = Plastic; TL = Teflon -Lined Cap VOA= Volatile Organics Analysis (Zero Head Space) ORIGINAL

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140416
FACILITY NAME: Gobble Concrete Company, Inc.
SAMPLE COLLECTOR: Chris Garrison
CERTIFIED LABORATORY Prism Lab # 402
Lab #
OPTIONAL INFO:
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2019
SAMPLING PERIOD: ® July -December ❑ January -June
COUNTY Davidson
PHONE NO. 336 1225-8235
ADD TO LISTSERVE? ®YES ❑NO EMAIL: gobbleconcrete(@vahoo.com
DISCHARGING TO CLASS: []SA ❑HQW ❑PNA ❑Trout ®Other
Outfall No.
Date Sample
Collected
(mm/dd/yr OR
NO FLOW)'
PH
(Standard Units)
TSS
(mg/L)
Total
Rainfall°
(in)
In Tier 2
Monthly Monitoring
(y/n)
# of Months inTier2
Sampling
-
-
6-92
1002,3
-
-
-
01
5/23/19
9.4
29
.15
n
0
' 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.
' 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/I, except when discharging to ORW, HOW, Trout, and PNA waters where they are 50 mg/l.
4 For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 8/1/2017-6/30/2022 Last Revised 07/27/17
Page 1 of 2

Part B• Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected
(mo/dd/yr)'
PH
(Standard
Units)
Non -Polar
Oil & Grease using
method 1664
SGT-HEM
(rng/L)
Total
Suspended
Solids
(mg/L)
Total
Rainfall ,
(in)
New Motor Oil Usage
(gal/month)
In Tier 2 .
Monthly
Monitoring?
(y/n)
# of Months in Tier 2
Samplingz
6-92
152
1002,3
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO X
HAVE YOU CONTACTED THE REGION? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail Orieinal and one copv of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring period
in case of "No Flow") to:
Division of Water Resources
Attn: DWR Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"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 qualified personnel 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, to the best of my knowledge and belief, true, accurate, and complete. 1
am aware that thergiYo signifiy¢nt penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
(Signature of Permittee)
Permit Date:8/1/2017-6/30/2022
(Date)
Last Revised 07/27/17
Page 2 of 2