WQ0036676_Compliance Evaluation Inspection_20160907

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Water Resources
ENVIRONMENTAL DUALITY
Mr. Glen De Lozier, QC Manager
Blue Dot Readi-Mix
Post Office Box 23029
Mint Hill, North Carolina 28227
Dear Mr. De Lozier:
PAT MCCRORY
Governor
DONALD R. VAN DER VAART
Secretary
S. JAY ZIMMERMAN
Director
September 7, 2016
via email
Subject: Non -Discharge Permit Inspection
Recycle System - Permit #WQ0036676
Blue Dot Readi-Mix — Exchange Street Facility
Mecklenburg County
Enclosed you will find the report for the compliance inspection conducted on August 17th, 2016
at the referenced facility. I would like to thank you and the Exchange Street facility staff for
your time during the site visit.
The Recycle system appeared well maintained and to be operating in accordance with the
permit, at the time of inspection. I noted below the highlights of our discussions and records
management needed to maintain overall compliance with permit requirements.
• Submit the facility certification form attached to your permit (copy also provided
during the inspection) in accordance with the instructions in permit condition 1.1.
• Verify the drawings submitted with the application package are the "as built"
drawings for the system; or, submit the final drawings as needed.
• Hauling records of residuals removed from the facility need to be maintained in
accordance with permit condition IV.3.
• Maintenance records for the recycle system are currently logged in an off -site
"main" computer data base tracking all facility repairs. It is acceptable to track this
way, provided the recycle system information is readily available for review via an
on -site computer. Reference permit condition IV.4.
• The permit expiration date is 10/31/2018. Per permit condition 1.3., a renewal
application is due 6 months prior to expiration.
The report should be self-explanatory; however, should you have any questions, feel free to
call me at 704-235-2184 or contact me via email at maria.schutte(a�ncdenr.gov.
Maria Schutte, Environmental Specialist
State of North Carolina l Environmental Quality 1 Water Resources l Water Quality Regional Operations
Mooresville Regional Office) 610 East Center Avenue, Suite 301 1 Mooresville, North Carolina 28115
704 663 1699

Mooresville Regional Office
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ
Enclosure(s): Inspection Report August 2016
CC: Paul Cochrane, President, Exchange Street, LLC, POB 23029, Charlotte, 28227 (email)
Ronnie Vickerstaff, Plant Manager — Exchange Street Facility (email)

State of North Carolina Department of Environmental Quality
Division of Water Resources
Pat McCrory, Governor
Donald R. van der Vaart, Secretary
NON -DISCHARGE COMPLIANCE INSPECTTON
Recycle/Reuse/Reclamation System
GENERAL INFORMATION
Owner: Exchange Street, LLC County: Mecklenburg
Permit #: WQ0036676 (Closed -Loop Recycle) Project Name: Blue Dot Readi-Mix —Exchange Street
Issuance Date: 11/20/2013 Expiration Date: 10/31/2018
Permittee: Paul Cochrane, President Phone: [phone] email: [e-mail]
Additional Contact: Glen De Lozier, QC Manager Phone: [phone] Cell: 704-201-1840
email: [e-mail]
Facility Contact: Ronnie Vickerstaff, Plant Manager Phone: [phone] Cell: 704-620-3988
Email: [e-mail]
Reason for Inspection
X ROUTINE COMPLAINT FOLLOW-UP Facility Start-up
Inspection Date(s): August 17, 2016
Inspection Summary: (additional comments may be included on attached pales)
Closed Loop System Description: The permitted system is composed of a 35,882ga1 dirty water chamber
with two mixers, two settling chambers, a clear water chamber, overflow basin and manual wash pit, an
aggregate reclaimer and filter press and a 22,000ga1 water tank.
Please note:
• The basin(s)/Recycle system appeared well maintained, at the time of inspection. This is a
new system and records management was discussed as noted in the cover -letter.
• The MRO should be informed of any changes to the contact information noted above.
Is a follow-up inspection necessary yes X no
Inspector Name/Title: Maria Schutte, Environmental Specialist
Telephone No.: 704-235-2184 Fax No. 704-663-6040
Date of Inspection: 8/17/2016

Non -Discharge Permit Inspection Page 2
Permit #WQ0036676 Blue Dot Readi-Mix-Exchange Street —Mecklenburg County
Treatment
Y Are treatment facilities consistent with those outlined in the current permit.
Y Do all treatment units appear to be operational? If no, note below.
Concrete Slurry Settling Chambers
(check any/all that apply)
Y Influent structure (free of obstructions)
N Baffles/curtains (in need of repair)
Y Freeboard maintained; System design is for over flow to next tanks. It appears as though freeboard
will not be an issue.
N Evidence of overflow
Y Unusual color (very black, textile colors); Slurry is color of the concrete washed into the system.
N Foam (are antifoam agents used)
N Excessive solids buildup (from bottom); The tank bottom is not visible through the slurry; however,
solids from the settling chambers are removed by the system, dried and stored until hauled.
Y Effluent structure (free of obstructions, easily accessible)
Comment: See Residuals section.
Recycle (Clear Water) Chamber
(check any/all that apply)
Y Influent structure
NA Baffles/curtains (in need of repair)
Y Freeboard maintained
N Evidence of overflow
N Unusual color
N Foam
N Excessive solids build-up
Y Effluent structure (free of obstructions, easily accessible)
Comment:
Residuals
storage/treatment: There are two concrete residuals generation points in the system. The first is after the
"dirty" water settling chambers and the second at the filter press/aggregate reclaimer. Per conversation
with Mr. De Lozier, the concrete is periodically hauled for reuse. A record keeping system for the hauling
tickets and all system records was discussed, as noted in the cover -letter.
Recordkeeping
Y Is permit available upon request?
N Are operational logs present? NE Complete?
NE Is the operation and maintenance manual present? Complete?
N Has DWR received any complaints regarding the facility in the last 12 months?
Other noted conditions
Submit the engineer signed facility certification form and "as built" drawings (fapplicable), as referenced
in the cover letter.