NCG140246_Inspection Report_20191119

Charlotte -Mecklenburg
STORM
n_ WATER
Services -'
November 19, 2019
Concrete Supply Company
Attn: Johnie Alexander, Environmental Manager
12148 Nations Ford Road
Pineville, NC 28134
Subject: Industrial Facility Inspection
Concrete Supply Company — Arrowood Plant
Dear Mr. Alexander:
2145 Suttle Avenue
Charlotte, NC 28208-5237
On November 19, 2019, Corey Baumgardner of Charlotte -Mecklenburg Storm Water
Services (CMSWS) conducted an inspection of the above referenced facility as a requirement of
the City of Charlotte's NPDES Permit, NCS000240, Part Il, Section H. Inspection authority is
granted by Charlotte City Code Chapter 18, Article III, Section 18-82. At the time of inspection,
the facility was observed to be in compliance with the City of Charlotte Storm Water Pollution
Control Ordinance.
The inspection was also conducted as part of a cooperative working agreement between
Mecklenburg County and the North Carolina Department of Environmental Quality (NCDEQ) —
Division of Energy, Mineral and Land Resources (DEMLR). NCDEQ — DEMLR has been copied
on this report and made aware of the following observations regarding the facility's NPDES
stormwater permit:
2) Stormwater Pollution Prevention Plan (SPPP)
A Stormwater Pollution Prevention Plan (SPPP) has been developed, recorded, and implemented.
3) Qualitative Monitoring
Qualitative monitoring has been conducted and recorded.
4) Analytical Monitoring
Analytical monitoring has been conducted and recorded.
Thank you for the assistance and cooperation with the site inspection. The attached
report provides details about inspection observations and should be self-explanatory. Please
contact me at [phone] if you have any questions or need additional information. For
questions specifically regarding your State -issued NPDES Stormwater Certificate of Coverage
NCG140246, please contact James Moore with NCDEQ — DEMLR at [phone].
•
To report pollution or drainage problems, call: 311
http://stormwater.charmeck.org
CHARIATW. 0.

Concrete Supply Company
Attn: Johnie Alexander, Environmental Manager
Page 2
November 19, 2019
Sincerely,
Corey Baumgardner
Environmental Specialist
Charlotte -Mecklenburg Storm Water Services
cc: Kristen O'Reilly, Charlotte Storm Water Services
James Moore, NCDEQ — DEMLR
Zahid Khan, NCDEQ — DEMLR
Lily Kay, NCDEQ — DEMLR
Attachment

Chadototte-Mecklenburg 2 1 4 5 S u t t 1 e Avenue
STORMCharlotte, NC 28208
a�..� WATER Facility Inspection
services
-
Facility Name: Concrete Supply Co-Arrowood Inspection # : 47300
Contact: Johnie Alexander, Environmental Manager Permit #: NCG140246
Inspector: Corey Baumgardner Receiving Stream: SUGAR
Inspection Date: 11/19/2019 Entry Time: 10:30 am Exit Time: 11:30 am SIC #:
Facility Description: Concrete Supply - Arrowood Plant is located at 12148 Nations Ford Road on approximately 6 acres
leased from the Martin Marietta Quarry. This facility produces ready -mixed concrete products.
File Review/History: The facility was previously inspected by Charlotte -Mecklenburg Storm Water Services (CMSWS)
on 01/19/2016 and was observed to be in compliance with the City of Charlotte Storm Water Pollution Control Ordinance.
Inspection Summary: At the time of inspection, the facility was observed to be in compliance with the City of Charlotte
Storm Water Pollution Control Ordinance. See full report for further details.
Site Inspection Deficiency Comments
Stormwater system (catch basins,
No
Commingled stormwater and process water flows through the
inlets, outfalls, etc.)
site via sheet -flow to a retention area for pH adjustment and
TSS settling where it is recycled or discharged to Outfall
#001. Outfall #002 has been regraded and all commingled
stormwater and process water flow to Outfall #001.
Erosion issues
No
Structural stormwater BMPs
No
Commingled stormwater and process water flows to a
retention basin where it is treated for pH using a carbon
dioxide circulation system.
Illicit discharges/connections
No
No illicit discharges or connections were observed during the
inspection.
Above ground storage tank(s), and
No
The facility has one 10,000-gallon diesel fuel tank and seven
any associated venting — list size and
various admixture tanks ranging from 500-gallon to
contents
1,600-gallon capacity. No issues were observed.
Underground storage tank(s) - fill port
N/A
area; list tank sizes & contents
Outdoor material storage area(s)
No
The facility stores aggregate, sand, and concrete washout
outdoors. The facility recently grading the area behind the
bulk gravel storage area to discharge to the treatment ponds
and Outfall #001 rather than Outfall #002. No stormwater
issues were observed.
Outdoor processing area(s)
No
Loading/unloading area(s)
No
Vehicle/equipment area(s) - fueling,
No
Vehicles are fueled, stored, and washed on site. Vehicle
washing, storage, etc.
wash water discharges to the facility's process water
treatment pond. Concrete trucks are parked in assigned
parking spots and are regularly inspected for leaks or
deficiencies. No stormwater issues were observed.
Oil/water separator and/or
N/A
pretreatment
•
ObTo report pollution or drainage problems call: 311
CIIARLOTTE. http://stormwater.charmeck.org
11/19/2019 2:24:20PM
Page 1 of 3

INSPECTION
Site Inspection Deficiency Comments
Waste storage/disposal area -
dumpsters, scrap metal bins, etc.
No
Food service area(s)
N/A
Indoor material storage area(s)
No
Oil, lubricants, concrete curing compound, and other items
are stored in a shed and storage container on site. No
ormwater issues were observed.
Indoor processing area(s)
N/A
Floor drains
N/A
[and
Spill response equipment
No
pill response equipment is located near the diesel fuel tank
other areas onsite.
Stormwater Pollution Plan Observed Comments
Does the facility have a stormwater
pollution prevention plan?
Yes
General location (USGS) map
Yes
Narrative description of practices
Yes
Detailed site map
Yes
List of significant spills (past 3 years)
Yes
No significant spills have occurred within the previous 3
years. A "notation of no spills" has been documented on an
annual basis.
Non-stormwater discharge evaluation
of outfall(s)
Yes
Non-stormwater discharge evaluations were conducted on
3/6/19 and 6/11/19.
Feasibility study
Yes
All necessary secondary
containment provided
Yes
Collected water evaluated and
documented prior to release
Yes
BMP Summary
Yes
Spill prevention and response plan
Yes
Preventative maintenance and good
housekeeping plan
Yes
Facility provides and documents
employee training
Yes
Training was last conducted on 8/5/19.
List of responsible parties
Yes
Reviewed and updated annually
Yes
The most recent update of the plan was conducted on
3/31 /19.
Stormwater facility inspection
program conducted semi-annually
Yes
Facility inspections were conducted and documented on
3/27/18, 9/21/18, 4/15/19, and 8/28/19.
Qualitative/Analytical Monitoring Observed Comments
Qualitative monitoring conducted
semi-annually
Yes
Qualitative monitoring is conducted quarterly. The last
monitoring events occurred on 3/8/19, 4/5/19, 6/11/19, and
9/12/19.
Analytical monitoring conducted
semi-annually
Yes
Analytical monitoring is conducted quarterly. The last
monitoring events occurred on 3/8/19, 4/5/19, 6/11/19, and
9/12/19. TSS and pH were above permit benchmarks at
Outfall #002. Exceedances were documented and submitted.
According to facility personnel, the exceedances are a result
of Martin Marietta's discharge to Outfall #002. See
"representative outfall status" below for further detail.
Analytical monitoring from vehicle
maintenance
N/A
Permit and Outfalls Observed Comments
�„�_ 'a
(�-� To report pollution or drainage problems call: 31 I ^
CIGIIILOTTE. http://stormwater.charnieck.org
11 /19/2019 2:24:20PM Page 2 of 3

Jf In Y
Permit and Outfalls Observed Comments
Copy of permit and certificate of
Yes
coverage onsite
All outfalls observed
Yes
No stormwater pollution issues were observed discharging
from the facility. A discharge was observed from Martin
Marietta that ran into the facility's Outfall #002. No
stormwater from the facility was observed discharging to
Outfall #002. See "representative outfall status below for
further detail.
Number of Outfalls Observed
2
Representative outfall status
Recommendation
No stormwater from the facility was observed discharging to
documented by NCDWQ
Outfall #002. The drainage ditch had been rerouted to
discharge to the wash bays and Outfall #001. Martin Marietta
was observed discharging to Outfall #002. CMSWS
recommends applying for representative outfall status at
Outfall #001.
Annual no -exposure self
N/A
re -certification documented
& To report pollution or drainage problems call: 311 '
CHARLOTTE http;//stormwater.charmeck.org
11/19/2019 2:24:20PM Page 3 of 3