WI0300045_Compliance Evaluation Inspection_20200717 (2)

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quality
July 17, 2020
William White, Director of Facilities (via email)
Catawba College
2300 W. Inns St.
Salisbury, NC 28144
Subject: Catawba College Geothermal Well System
Compliance Inspection
Permit No. WI0300045
Rowan County
Dear Mr. White:
On July 15, 2020, a staff member of the Mooresville Regional Office (MRO) performed a site
visit of the Geothermal Heating/Cooling Water Return Well Loops at Catawba College under
permit WI0300045. The MRO would like to thank you and your staff for your assistance during
this site visit.
According to information provided by your office, several of the heat exchange units in the well
loops have been replaced due to normal wear and tear.
During the site visit, we selected wells for groundwater sampling, and the selected wells were
reviewed. Please proceed with the sample collection and forward the results to us when
complete.
The attached report should be self-explanatory; however, should you have any questions, feel
free to contact our office by phone at 704-235-2198 or by email at edward.watsongncdenr.gov.
Sincerel DocuSigned by
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Andrew H. Pitner, Assistant Regional Supervisor
Water Quality Regional Operations Section
Mooresville Regional Office
Division of Water Resources, NCDEQ
Attachment: Inspection Report
CC: Laserfiche file
Mike Rogers, DWR UIC Program (via LaserFche)
D E Qbi�� North Carolina Department of Environmental Quality I Division of Water Resources
Mooresville Regional Office 1 610 East Center Avenue, Suite 301 1 Mooresville, North Carolina 28115
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Compliance Inspection Report
Permit: W10300045 Effective: 08/21/15 Expiration: 07/31/20 Owner: Catawba College
SOC: Effective: Expiration: Facility: Catawba College
County: Rowan Catawba College
Region: Mooresville 2300 W Innes St
Salisbury NC 28144
Contact Person: William T White Title: Phone: [phone]
Directions to Facility:
Catawba College is located approximately 3 miles north of Salisbury, North Carolina on West Innes Street. The Administration
Building (Hedrick Building) located at 2300 W. Innes Street is located on the left.
System Classifications:
Primary ORC: Certification: Phone:
Secondary ORC(s):
On -Site Representative(s):
Related Permits:
Inspection Date: 07/15/2020 Entry Time 09:OOAM Exit Time: 11:30AM
Primary Inspector: Edward Watson Phone:
Secondary Inspector(s):
Reason for Inspection: Routine Inspection Type: Compliance Evaluation
Permit Inspection Type: Injection Heating/Cooling Water Return Well
Facility Status: 0 Compliant ❑ Not Compliant
Question Areas:
Wells 0 System Operations
(See attachment summary)
Page 1 of 3

Permit: W10300045 Owner - Facility: Catawba College
Inspection Date: 07/15/2020 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
On July 15, 2020, MRO staff performed a site visit to Catawba College under permit W10300045 Geothermal Return well
network. During the site visit, wells were inspected for the three existing geothermal loops.
System sampling requirements were discussed with Catawba College staff. A well pairing of one supply well and one return
well was selected for each loop. A total of three sample pairs will be collected for the Geothermal system a Catawba
College.
Well,#3 is currently being repaired. However, the repair is expected to be completed by 7/17/2020 so the well can be
sampled.
Wells 3 & 4 will be sampled for the New Loop, Wells 13 & 16 will be sampled for Woodson Loop, and wells 9 & 10 will be
the sample pair for the Abernathy Residence Loop.
Heat exchange units have been recently changed for Salisbury -Rowan Dorm, and Pine Knot dorm in the new loop, Woodson
dorm and Stanback dorm in the Woodson well -loop. All of these heat exchange units were replaced within the last three
years.
Catawba College has decided to hire a consultant to perform the well sampling. MRO staff reminded Catawba College staff
of the importance of sterilizing the well ports before the collection of the Coliform samples. The hired consultant will also
determine the laboratory that will perform the analysis for the GW samples.
Page 2 of 3

Permit: W10300045 Owner - Facility: Catawba College
Inspection Date: 07/15/2020 Inspection Type: Compliance Evaluation Reason for Visit: Routine
System Operation
Is same well used as source well and injection well?
Is injection well capable of assimilating injected fluid?
Injection flow rate at time of inspection (gpm)
Has system owner/operator noticed any abnormalities (turbidity, air in system, poor heating/cooling, etc) in
system operation?
Comment on system operation
Is system operation and construction consistent with that described in application?
Describe inconsistencies between application and observed operation/construction
MRO is not aware of the existance of any inconsistancies.
Yes No NA NE
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❑ ❑ ❑
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Comment: The system is composed of 16 wells. Six supply wells and ten return wells that compose three
separate geothermal loops. The loops have multiple heat exchange units.
The wells were selected are one supply well and one return well per loop. The wells were
identified as part of the site visit. Well # 3 is out of service temporaliv to replace drop pipe. This
well is expected to be return to service by 7/17/2020.
Page 3 of 3