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115 MacKenan Drive | Cary, NC 27511
t: 919.469.3340 | f: 919.467.6008 | www.withersravenel.com | License No. F-1479
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November 1, 2023 State of North Carolina Department of Environmental Quality Federal & State Lead Program
Division of Waste Management-Underground Storage Tank Section 1646 Mail Service Center Raleigh, North Carolina 27699-1646 Attn: Mr. Scott Ryals
RE: Corrective Action Performance Report: July 2023 through September 2023 Blue Ridge Hospital – Spruce Pine 125 Hospital Drive Spruce Pine, Mitchell County, North Carolina
Groundwater Incident Number: 3659
UST Number: AS-240 WR Project Number: 23-0307-A Mr. Ryals:
WithersRavenel, Inc. (WR) has performed limited operation and maintenance (O&M) services for the site in association with Task Authorizations (TA) 04 and a change order for TA-04 for the project under NCDEQ Contract # N70522-C, authorized on July 13, 2023 and September 6, 2023, respectively.
WR appreciates the opportunity to be of service to the Federal & State Lead Program. Should you have any questions regarding the attached, please contact us at (919) 469-3340. Cordially,
WithersRavenel
Flora D’Souza, CHMM Elizabeth A. Allyn, P.G.
Environmental Project Scientist II Environmental Project Geologist II
Blue Ridge Hospital – Spruce Pine Incident # 3659 WR Project # 23-0307-A Corrective Action Performance Report November 2023 ii
TABLE OF CONTENTS
A. SITE INFORMATION .......................................................................................................... 1
B. EXECUTIVE SUMMARY ..................................................................................................... 2
C. SITE HISTORY AND CHARACTERIZATION .................................................................... 2
D. REMEDIATION SYSTEM OPERATION ............................................................................ 3
E. CONCLUSIONS AND RECOMMENDATIONS ................................................................ 6
FIGURES Figure 1 General Location Map Figure 2 Site Map Figure 3 Effluent Discharge Path Map Figure 4 Treatment System Layout APPENDICES
Appendix A Field Notes
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Blue Ridge Hospital – Spruce Pine Incident # 3659 WR Project # 23-0307-A
Corrective Action Performance Report November 2023
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B. EXECUTIVE SUMMARY
1. Scope of Services
WithersRavenel, Inc. (WR), in association with TA-04 for the site, completed the following approved Scopes of Services:
• TA-04:
o Performed O&M services on August 15, August 18, and September 26, 2023.
o Performed the 2,000-hour maintenance on the air compressor on August 15, 2023.
o Blake & Pendleton, Inc. installed a separator and moisture trap, and changed the
oil and oil filter on the air compressor.
o Preparation and submittal of the enclosed report. C. SITE HISTORY AND CHARACTERIZATION
The site is located at 125 Hospital Drive in Spruce Pine, North Carolina, and is currently an active
hospital (Blue Ridge Regional Hospital). A site location map is provided as Figure 1 and the UST areas and well field are depicted on Figure 2.
• The UST system installation contractor failed to connect the excess fuel return line from
the exterior foundation wall of the boiler room (part of the main hospital building at that time) to the 20,000-gallon UST. Excess fuel not used by the boiler discharged to the subsurface rather than returning to the UST system. According to the NCDENR’s (currently NCDEQ) Registered Tank Database, the hospital operates a UST system that
includes one 20,000-gallon heating oil UST (installed May 10, 1966), one 7,000-gallon
heating oil UST (installed May 7, 1976), and associated piping that provides heating oil to the hospital’s boiler. In historical reporting, S&ME, Inc. (S&ME) reported that the 7,000-gallon UST is more than likely an 8,000-gallon UST.
• The release was discovered in May 1988. From 1988 to 2007, soil and groundwater assessment activities were conducted to determine the extent of the release to the soil and groundwater. The groundwater beneath the hospital historically flows to the northwest toward the North Toe River, along with the free product and impacted
groundwater.
• In 1994, a remediation system consisting of a groundwater and free product recovery system was installed and began operation. Treated water from the remediation system
discharges to an unnamed tributary of Beaver Creek (Class C, Trout water), which flows
to the North Toe River within the French Broad River basin. The pump and treat system at the site consisted of sixteen recovery wells and eleven trench wells (located along the DOT right-of-way) equipped with total fluid pneumatic pumps, associated piping, two oil water separators, and a 25-horsepower air compressor. Recovered product was stored in
a 2,500-gallon aboveground storage tank (AST).
WithersRavenel
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Blue Ridge Hospital – Spruce Pine Incident # 3659 WR Project # 23-0307-A
Corrective Action Performance Report November 2023
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Based on a previous receptor survey conducted in 2011, two active drinking water supply wells are located within 1,000 feet of the source area. Municipal water was determined to be available
to the area.
In 2012, when Crawford Environmental Services (Crawford) was managing the site, operation of the remediation system ceased.
In April 2015, S&ME performed an evaluation of the groundwater treatment system to
determine what necessary repairs and maintenance items needed to be addressed to bring the system back into operation. The findings of this evaluation were provided to the NCDEQ in the form of a System Enhancement Recommendation Report dated July 22, 2015, which included air compressor maintenance, electrical service repairs, the need for new carbon vessels, and repairs
to several recovery well pumps. The recommended repairs were made in August and September
2015. WR took over site O&M activities in January 2019. Due to multiple repairs and/or equipment that needed to be replaced, it was determined after the March 17, 2022 O&M visit that the
system would not be restarted.
On August 19, 2022, WR installed a recovery well, RW-11A, near MW-4R to be connected to the future pump and treat system. Approximately 11.35 feet of Light Non-Aqueous Phase Liquid (LNAPL) was measured in RW-11A on December 20, 2022.
A new pump and treat remediation system was installed by Product Recovery Management, Inc. (PRM) between September 2022 and March 2023. The official start-up for the new system was on April 3, 2023.
D. REMEDIATION SYSTEM OPERATION
1. Groundwater Monitoring Event
Groundwater monitoring activities were not completed during completion of this task authorization.
2. Remediation System Status
During this reporting period, WR conducted system maintenance visits on August 15, August 18, and September 26, 2023. Field notes are included as Appendix A.
3. General System Operation The new pump and treat remediation system is housed in two Sea Box containers that are located west-northwest of the Blue Ridge Regional Hospital. The new system consists of a
Sullair air compressor, an oil/water separator, one 550-gallon product holding tank (located
outside the treatment system structure), two 310-gallon settling tanks, four pre-air stripper bag filer housings containing 50-micron bag filters, a four tray air stripper, four post-air
WithersRavenel
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Blue Ridge Hospital – Spruce Pine Incident # 3659 WR Project # 23-0307-A
Corrective Action Performance Report November 2023
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stripper bag filter housings containing 10-micro bag filters, two 1,000-pound activated carbon filters (plumbed in series), and a 1,500-gallon backwash tank.
Recovered groundwater is routed via pneumatic pumps from the recovery wells and the interceptor trench through a 2-inch PVC pipe to the oil/water separator within the treatment system structure. Recovered oil drains by gravity into a 550-gallon oil holding AST outside the treatment system structure and recovered groundwater is pumped into the first 310-
gallon settling tank that drains by gravity into the second 310-gallon settling tank. The water
from the second 310-settling tank is pumped through four particulate filters containing 50-micron bag filters (plumbed in parallel) then into a shallow, four tray aeration stripper. The bottom tray of the air stripper is transferred by a pump through four particulate filters containing 10-micron bag filters (plumbed in parallel) and two 1,000-pound activated carbon
filters (plumbed in series), then to the 1,500-gallon backwash tank. The water is discharged
to a nearby stormwater pipe and eventually into Beaver Creek northwest of the treatment system. The effluent discharge map is presented as Figure 3, and the layout of the system is presented in Figure 4.
On June 27, 2023, WR found the system down due to the air compressor breaker being
tripped. It was determined that the air compressor breaker had tripped because the 2,000-hour service on the air compressor needed to be completed. The compressor would not maintain the necessary operating pressure of 90 pounds per square inch (psi) until service was completed. The system could not be restarted due to the air compressor needing to be
serviced. The following is a summary of system services performed during this O&M period.
a. August 15, 2023, WR mobilized to the site to complete the 2,000-hour service. The air filter and oil filter were changed. The system was started and once the air compressor pressure reached 110 psi, it began to lose pressure and make a high-pitched noise. The system was turned off and Blake &
Pendleton, Inc. was contacted about visiting the site to troubleshoot the issue with the compressor. b. August 18, 2023, WR mobilized to the site to meet a technician from Blake & Pendleton to trouble the issue with the air compressor. The technician from Blake and Pendleton determined that the holding tank was full, and water had
backed up into the compressor due to an issue with the drain line.
c. September 26, 2023, WR mobilized to the site to measure LNAPL thickness in onsite monitoring (MW-2, MW-4R, MW-10, and MW-14) and recovery wells (RW-1 through RW-11, RW-11A, and RW-12 through RW-16).
d. September 27, 2023, A technician from Blake & Pendleton mobilized to the
site to install a separator and moisture trap and change the oil and oil filter on the air compressor. e. October 3, 2023, As part of the 4th quarter 2023 O&M and under TA-05, WR mobilized to the site to restart the system.
4. Total Gallons of Water/LNAPL Pumped During the Period The remediation system did not operate during this period due to the repairs and servicing of the air compressor. A total of 327 gallons of LNAPL has been recovered between the start-up of the remediation system in April 2023 through September 2023.
WithersRavenel
Our People. Your Success.
Blue Ridge Hospital – Spruce Pine Incident # 3659 WR Project # 23-0307-A
Corrective Action Performance Report November 2023
Page 5 of 7
5. System Repairs
a. Air Compressor Service
Air compressor service was conducted during this quarter which included the installation of a separator and moisture trap and the air filter, oil filter, and oil were changed.
b. Activated Carbon Backflushing Activities
The carbons were not backflushed during this period due to the system being down.
c. Bag Filter Change Out
The bag filters were not changed out during this period due to the system being down. d. Pneumatic Pump Maintenance
No repairs were made during this period as the system was new. e. Change-out of Carbon Vessels
The carbon vessels were not changed out during this period.
f. Minor repairs to system No minor repairs were made to the system during this period.
6. System Effluent Sampling Effluent samples were not collected during this quarter due to the system being down. 7. System Influent Sampling
Influent samples were not collected during this quarter due to the system being down.
LNAPL Measurements The following LNAPL measurements were taken on September 26, 2023, and the pneumatic
pump status listed below is the current status:
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Blue Ridge Hospital – Spruce Pine Incident # 3659 WR Project # 23-0307-A
Corrective Action Performance Report November 2023
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Recovery Well Pneumatic Pump Status (as of October 2023)
9/26/2023 9/26/2023 Depth to Product (ft) Depth to Water (ft) RW-1 Not Operating -- 47.98
RW-2 Operating 48.13 48.89
RW-3 Operating 54.20 54.48
RW-4 Operating 52.59 52.66 RW-5 Operating 52.19 52.35
RW-6 Operating -- 52.39
RW-7 Operating 48.98 49.04 RW-8 Operating 47.30 47.45
RW-9 Operating -- 45.06
RW-10 Not Operating -- 43.15 RW-11 Operating 37.88 44.39 RW-11A Operating 39.60 48.52
RW-12 Operating 32.15 32.22 RW-13 Not Operating -- 33.79 RW-14 Operating 10.75 12.49
RW-15 Operating 9.00 9.05
RW-16 Operating 10.25 10.65 RW-17 Operating Not Measured Not Measured
RW-18 Operating Not Measured Not Measured
RW-19 Not Operating Not Measured Not Measured RW-20 Not Operating Not Measured Not Measured
RW-21 Not Operating Not Measured Not Measured
RW-22 Not Operating Not Measured Not Measured RW-23 Not Operating Not Measured Not Measured RW-24 Not Operating Not Measured Not Measured
RW-25 Not Operating Not Measured Not Measured
RW-26 Not Operating Not Measured Not Measured RW-27 Not Operating Not Measured Not Measured
The main focus for LNAPL recovery is from RW-2, RW-5, RW-11, RW-11A, RW-12, RW-14,
RW-15, and RW-16. Flow rates from RW-2, RW-5, RW-11, RW-11A, and RW-12 are higher than flow rates from the other operating recovery wells to remove more water/LNAPL from the recovery wells with the most LNAPL. E. CONCLUSIONS AND RECOMMENDATIONS
This following summarizes the O&M activities conducted in July, August, and September 2023.
• O&M site visits were conducted on August 15, August 18, and September 26, 2023.
• LNAPL was not recovered during this period due to the system being down.
• A total of 327 gallons of LNAPL has been recovered between the start-up of the remediation system in April 2023 through September 2023.
• Influent samples and effluent samples were not collected during the 3rd quarter of 2023.
• The air compressor was serviced, and a separator and moisture trap were installed on
September 27, 2023. The remediation system was restarted on October 3, 2023.
WithersRavenel
Our People. Your Success.
Blue Ridge Hospital – Spruce Pine Incident # 3659 WR Project # 23-0307-A
Corrective Action Performance Report November 2023
Page 7 of 7
Based on the above, the following recommendations are presented:
• Continue operation of the remediation system and bi-weekly O&M visits.
• Collect monthly influent samples and quarterly effluent samples.
FIGURES
DCV
FD
DRAWN BY:
07/31/2023 23-0307-A
1
SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:
BLUE RIDGE HOSPITAL
125 HOSPITAL DRIVE
SPRUCE PINE, MITCHELL COUNTY, NC
GENERAL LOCATION MAP
WithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com
1"=500 '
GRAPHIC SCALE
1 inch = 500 ft.
0 500250 1000
SUBJECT
SITE
A
L
T
A
P
A
S
S
H
I
G
HW
A
Y
HO
S
P
I
T
A
L
D
R
I
V
E
MW-9
MW-11
MW-8
RW-27
OW-11
OW-10
OW-9
OW-8
OW-7
OW-6
OW-5
OW-4
OW-3
OW-2
OW-1
RW-26
RW-25
RW-24
RW-23
RW-22
RW-21
RW-20
RW-19
RW-18
RW-17
WR-23
WR-22
WR-21
MW-7
MW-6
MW-10
MW-2
MW-4R
MW-4
MW-3
MW-12
MW-13
MW-14
RW-16
RW-15
RW-14
RW-13
RW-12
RW-11
RW-10
RW-9
RW-8
RW-7
RW-2
RW-4
RW-3
RW-5
RW-1
RW-6
MW-1 WR-1119E
20K-GAL8K
-G
A
L
TREA
TM
EN
T
S
Y
S
T
EMBUI
LD
ING
JUNCTION
BOX
RW-11A
REMEDIATION
SYSTEM DCVFDDRAWN BY:07/31/202323-0307-A2SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:SITE MAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com1" = 80'BLUE RIDGE HOSPITAL125 HOSPITAL DRIVESPRUCE PINE, MITCHELL COUNTY, NCLEGEND
MONITORING WELL (LOCATED)
MONITORING WELL (UNCONFIRMED)
MONITORING WELL (ABANDONED/NOT LOCATED)
RECOVERY WELL
OBSERVATION WELL
RECOVERY LINE
APPROXIMATE UST LOCATION
NOTES:
1.) 2022 AERIAL OBTAINED FROM NC ONEMAP.
2.) RECOVERY AND WELL LOCATIONS BASED ON MAP PROVIDED BY
S&ME, INC.
GRAPHIC SCALE
1 inch = 80 ft.
0 8040 160
REMEDIATION
SYSTEM
HOSIPITAL
EFFLUENT DISCHARGE
FROM REMEDIATION
SYSTEM TO STORM
WATER SYSTEM
SWDI
SWDI
SWDI
ALTAPASS H
IGHWAY
H
O
S
P
I
T
A
L
D
R
I
V
E19ELEGEND
UNDERGROUND PIPING
NOTES:
1.) 2022 AERIAL OBTAINED FROM NC ONEMAP.
2.) RECOVERY AND WELL LOCATIONS BASED ON MAP PROVIDED BY
S&ME, INC.
GRAPHIC SCALE
1 inch = 80 ft.
0 8040 160 DCVFDDRAWN BY:07/31/202323-0307-A3SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:EFFLUENT DISCHARGEPATH MAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com1" = 80'BLUE RIDGE HOSPITAL125 HOSPITAL DRIVESPRUCE PINE, MITCHELL COUNTY, NC
LEGEND
NOTES:
1.) REMEDIATION SYSTEM SPECIFICATIONS ARE FROM PRODUCT
RECOVERY MANAGEMENT INC. (PRM FILTRATION) PROJECT
WO-7344 GROUNDWATER RECOVERY AND TREATMENT SYSTEM
SHEET M-1: WATER TREATMENT SYSTEM PLAN DETAIL - AS BUILT
REVISION DATED 1/23/23.
GRAPHIC SCALE
1 inch = 4 ft.
0 42 8 DCVFDDRAWN BY:07/31/2023 23-0307-A4SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:TREATMENT SYSTEMLAYOUT MAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com1" = 4'BLUE RIDGE HOSPITAL125 HOSPITAL DRIVESPRUCE PINE, MITCHELL COUNTY, NC
APPENDIX A
COPY OF O&M FORMS