Environmental

Underground Storage Tank (UST) Sites

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Underground Storage Tank (UST) Sites

Site Number PCA Number CERCLA Number Site Name
UST 000001, SITE 00056 1 PSC 33
(Redesignated PSC 56)
Base Service Station (Building 880;NEX Gas Station) Tank 880
UST 000002 2   Kemen Test Cell Tank 873
UST 000004 4 PSC 7 Gas Hill (159)
UST 000005 5   Power Plant Building 650 (NFA)
UST 000006 6   8-inch Station Line (Line to Cecil Field) (NFA)
UST 000007 7   Ready Tanks 119 (NFA w/ LUCs)
UST 000008 8   Misc. Tanks - See PCA 22
UST 000009 9   Flying Club
UST 000010     Hangar 115
UST 000011 11   Hush House
UST 000012 12   Tank Site 1558 1 and 2 (to be considered under CERCLA)
UST 000013 13   Auto Hobby Shop Tank 622
UST 000014 14 PSC 19 Old Gas Station (NFA)
SITE 00002,
UST 000015
15 PSC 2 Former Firefighter Training Area
UST 000016 16   103rd Street-Hawkin’s Property
UST 000017,
SITE 00057
17 PSC 57 S-3 High Power Turn Up Pad (to be considered under CERCLA)
UST 000018 18   Tank Building 3900 (NFA)
UST 000019 19   Potable Water Plant (NFA) Building 127E Tank
UST 000020 20   Building 669 (NFA), Tank 66A
UST 000021 21   Building 197 (NFA)
UST 000022 22   Family Quarters I, J, & 1150 (NFA)
UST 000023 23   Hangar 1000-Tank Site G1000 (NFA)
UST 000024 24   Security Building 9 (NFA)
UST 000026 26   Kemen Test Cell (UST 26)
UST 000119 25   Tanks 120 & 1982 (NFA) and the Fuel Transfer Railroad Sump

 

UST 000001 – Base Service Station (Building 880; NEX Gas Station) Tank 880

Site Description Waste Type Regulatory Status
Base Gas Station, two UST areas Petroleum Product, Chlorinated Solvents No Further Action (FDEP Letter dated August 12, 2002)
The NEX Gas Station is located on the west side of the NAS, at the corner of Birmingham Avenue and Allegheny Road. It is an active gas station for NAS Jacksonville personnel. PCA 1 has two UST areas on site. One area was closed and remediated. NFA granted by FDEP on August 12, 2002. A Second UST area was investigated and found to contain both chlorinated solvents and petroleum constituents. That portion of the site has been transferred to the IR program and designated as PSC 56.

 

UST 000002 – Kemen Test Cell Tank 873

Site Description Waste Type Regulatory Status
Jet Aircraft engine testing facility Petroleum Product Site Rehabilitation Completion Order dated June 24, 1996. Reopened due to second tank area removal in 2010 with contamination exceeding regulatory thresholds.

The Kemen Test Cell, Building 873, is located in the central eastern portion of NAS Jacksonville at Black Point, approximately 200 feet due west from the seawall along the St. Johns River. The Kemen Test Cell is located in the southern portion of the Fleet Readiness Center in OU 3.

The Kemen Test Cell, Building 873, operated and continues to operate as a jet aircraft engine testing facility. A 25,000-gallon jet fuel (JP-5) UST, reported to have been in operation between 1974 and 2010, was formerly located approximately 35 feet from the western edge of Building 873. Numerous investigations have been conducted at the Kemen Test Cell to evaluate soil and groundwater impacts identified in the vicinity of the former 25,000-gallon JP-5 UST.

In May 1995 Bechtel completed a remedial action that included excavating soils and thermally treating the soils. In 2010, a tank (873-1) removal effort was conducted at the site by NAS Jacksonville and contaminated soil and groundwater exceeding FDEP Cleanup Target Levels was confirmed from samples taken during the removal. It is believed that the lines may have discharged; the tank was intact. Two, 12,000 gallon aboveground storage tanks (ASTs) were installed prior to removal of the UST. The ASTs were connected to existing piping once the UST was removed. FDEP letter issued May 17, 2010 requires a Site Assessment Report be prepared (see UST 000026).

 

UST 000004 – Gas Hill

Site Description Waste Type Regulatory Status
UST 000004 – Gas Hill Petroleum Product Site Assessment

The former Gas Hill Fuel Farm is located in the northeastern portion of NAS Jacksonville, in Duval County, Florida, approximately 2,000 feet west of the St. Johns River (Figure 1-1). The site is approximately 9 acres, and consists of a fenced, man-made grass covered mound that formerly contained 15 USTs. Fuel storage operations began at Gas Hill in 1943 and continued until 2000, when the facility was taken out of service and replaced by an aboveground storage tank facility near Hangar 1000. Historical records indicate the 15 USTs used during the fuel farm’s operational history contained diesel fuel, aviation gas (AVGAS), and jet fuel (JP-5).

Tanks J and K, 1,500-gallon diesel fuel USTs, were removed prior to 1980 because of suspected leaks. Their former location is not known. Tanks G and I (50,000- and 100,000-gallon JP-5 USTs) were abandoned in place in 1980 following damage from lightning strikes. Tank L, a 567,000-gallon JP-5 UST was taken out of service in the 1980s due to suspected leaks. The remaining 10 tanks at Gas Hill were drained of any residual AVGAS or JP-5 in 2000 prior to removal and demolition of the USTs and associated piping in 2006. In 2008 a Site Assessment was conducted, followed by three additional quarterly groundwater sampling events.

The 2009 Remedial Action Plan recommended No Further Action with controls for soil (surficial soil and leachability) with contaminant concentrations exceeding SCTLs and groundwater with contaminant concentrations exceeding GCTLs. Land use controls, which have not been implemented yet, will include restrictions for the site as follows: (1) the withdrawal and/or use of groundwater from the shallow aquifer beneath Gas Hill will not be allowed; and (2) the potential to encounter contaminated soil and/or groundwater during invasive construction activity will be recorded and adequately communicated to anyone initiating such activities. The recommended groundwater monitoring program will be used to evaluate remedy performance and achievement of the Remedial Action Objectives. Continuation of the groundwater monitoring program is recommended to evaluate the potential impact from contaminant leaching from soil to groundwater, plume stability, the effectiveness of natural attenuation, and to confirm the light non-aqueous phase liquid is not present at the site. Selected remedy is monitored natural attenuation with controls based on the results of the 2008 SARA and subsequent groundwater monitoring. Conditions for successful use of monitored natural attenuation as a remedy include plume stability, evidence of decreasing contaminant concentrations, and conditions favorable for biodegradation of the contaminants.

Semiannual sampling continues to monitor contaminated plume stability; assess the natural attenuation of contaminants in groundwater; confirm that light non-aqueous phase liquid (LNAPL) is not present at the site; and evaluate the leachability of contaminants to groundwater from soil.

Gas Hill, PSC 7 is under a long-term monitored natural attenuation program.

 

UST 000005 – Power Plant Building 650, Tank 650C (NFA)

Site Description Waste Type Regulatory Status
Former UST (Tank 650C) (OCULUS ID: DOD_7_2884) Petroleum (leaded fuel) Site Rehabilitation Completion Order (1/10/2005)
Site 650 served as the Heating Plant Fuel Storage facility at NAS Jacksonville. During the historical operation of Site 650, four storage tanks were used at the site. Tanks A and B were installed in approximately 1987 and each contained 25,000 gallons of No. 6 fuel oil. Tanks A and B are above-ground storage tanks (ASTs) contained within an impervious dike and are coated with corrosion resistant material. According to NAS Jacksonville personnel, Tank C was installed in the 1940s prior to the construction of Building 650. Tank C was a 2,500-gallon underground asphalt-coated steel tank containing leaded fuel. In 1988, a 3,000-gallon AST was installed as a replacement for the original tank C and was used for the storage of diesel fuel for the emergency generator. This UST 05 is the original Tank C UST and Tank 650C was located southeast of the former Building 650. Additionally, the Spill Prevention Control and Countermeasures (SPCC) Plan for Building 650 (1991) reported that the tank was properly abandoned in place in 1988. The tank was filled with sand during abandonment.

 

UST 000006 – 8-inch Station Line (Line to Cecil Field; NFA)

Site Description Waste Type Regulatory Status
8-inch underground fuel line Petroleum Product (JP-5) No Further Action
UST 6 (PCA 6) is located within the boundaries of PSC 1, Patrol Road Turnaround Area. UST 6 parallels the shoreline of the St. Johns River from southeast of the Patrol road turn-around to east of the taxiway on NAS Jacksonville. PSC 1 was used periodically for the disposal of construction debris (mostly concrete and asphalt rubble) to reclaim land and to provide shoreline protection. On May 4, 1988, the contractors depositing and leveling the rubble along the shoreline damaged an underground 8-inch fuel line, causing a spill of JP-5 fuel. Approximately 17,565 gallons of fuel were discharged, of which approximately 3,950 gallons were recovered from the ground. The contaminated soil was incinerated. The estimated volume of soil affected by the spill was 120 feet long by 78 feet wide by 6 feet deep. The remainder of the fuel was reportedly discharged into the St. Johns River.

 

UST 000007 – Ready Tanks 119 (NFA with Land Use Controls)

Site Description Waste Type Regulatory Status
UST Site Petroleum Product Site Assessment
This site has been combined with PCA 25

 

UST 000008 – Miscellaneous Tanks (See UST/PCA 22)

Site Description Waste Type Regulatory Status
Family Quarters I, J & 1150 Petroleum Product No Further Action (letter dated 8/12/2002)
Original designation was PCA 8 but was moved to PCA 22.

 

UST 000009 – Flying Club

Site Description Waste Type Regulatory Status
Flying Club Site Petroleum Product No Further Action (letter dated 4/2/1997); Site Rehabilitation Completion Order (No Further Action Approval Order letter dated 3/10/97)

This site is located in the northwestern portion of the flightline.

Pending receipt of Contamination Assessment Report Addendum and No Further Action Proposal for Flying Club Site, dated January 1997. Asked Jim Taylor (904-542-3016) to check Frank Sigona’s files for a copy. He has not located the document at the time of this deliverable.

 

UST 000010 – Hangar 115 (PCA 10)

Site Description Waste Type Regulatory Status
Hangar 115, PCA 10 Petroleum Product No Further Action (FDEP Letter dated January 28, 1998)

Hangar 115 (UST 000010) is located in the northeast area of NAS Jacksonville, south of the aircraft parking area and Runway 9-27. The area adjacent Hangar 115 includes Hangar 114 to the west, Hangar 116 to the east, and a parking area to the south. Several underground utilities extend along the parking lot area south and east of Hangar 115.

On June 10, 1994, a petroleum odor was detected by Navy personnel near the west side of Hangar 115 while replacing the concrete floor within the northern portion of the hangar.

According to Navy personnel, Hangar 115 has been used to repair and clean aircraft since 1939. The source of contamination was suspected to have originated primarily from hydraulic fluid and fuel, which seeped through cracks and joints in the concrete floor during routine maintenance and repair. Another possible source of contamination is a nearby wash rack disposal pit, approximately 200 feet south of Hangar 115, which previously received overflow from an oil-water separator at the wash rack. Vinyl chloride and trichloroethene compounds detected in Hangar 115 monitoring wells were believed to be associated with the wash rack in Building 200, south of Hangar 115. The Building 200 wash rack is being investigated separately as PSC 45 (Site 000045) in the Installation Restoration Program.

As an initial remedial action, the Navy removed approximately 40 cubic yards of excessively contaminated soil from beneath the hangar deck and replaced it with clean fill.

The site was monitored quarterly for on year and showed petroleum compound concentrations had decreased below the State GCTLs. Therefore, in 1998 the site was recommended and approved (January 28, 1998) by the FDEP for No Further Action. The decrease in contaminant concentrations over that one year monitoring period indicates that the soil removal activities and the current spill control procedures have eliminated the contamination source. In accordance with Chapter 62-770, Florida Administrative Code, the Navy requested the FDEP issue a Site Rehabilitation Completion Order for the Hangar 115 site after successful completion of the Monitoring Only Approval Order issued by the FDEP on February 7, 1997.

 

UST 000011 – Hush House

Site Description Waste Type Regulatory Status
Aircraft Test and Evaluation Facility (OCULUS ID: DOD_7_3097) Petroleum Product Site Assessment
During the construction of the Hush House, which is adjacent to the Kemen Test Cell, petroleum contamination was detected. Specifically, petroleum contamination was detected in soil at the site during foundation construction activities. This site was sampled in a screening program and vinyl chloride was detected. This site is included in the expanded investigation for OU 3, Area G. To be considered under CERCLA.

 

UST 000012 – Tank Site 1558 1 and 2

Site Description Waste Type Regulatory Status
UST Site (OCULUS ID: DOD_7_2886 and DOD_7_3096) Petroleum Product Site Assessment
PCA 12 is the former location of two steel, 750-gallon underground storage tanks (UST) Numbered 1558 1 and 1558-2. The USTs were located adjacent to the former location of Building 1558 at NAS Jacksonville. Building 1558 was demolished and Building 81, the steam plant, is located in its place. The tanks were used to fuel the Navy’s fleet vehicles, with one tank for gasoline storage and the other diesel fuel storage. The last date in which product was stored in the UST is not known. On February 16, 1995, the tanks were removed by Environmental Remediation Systems and a Tank Closure Report was filed. A 2001 soil and groundwater investigation found no petroleum contamination, but volatile organic compound contamination likely associated with OU 3. This site is included in the expanded investigation for OU 3, PSC 48, and Building 780. To be considered under CERCLA. Groundwater was assessed during the OU 3 RI Addendum at the site.

 

UST 000013 – Auto Hobby Shop Tank 622 (NFA)

Site Description Waste Type Regulatory Status
UST Site (OCULUS ID: DOD_7_2693) Petroleum Product (waste oil storage) No Further Action
The Auto Hobby Shop is located northwest of the intersection of Jason Street and Birmingham Avenue in Building 622. The study was confined to the vicinity where a UST associated with the Auto Hobby Shop was removed.

 

UST 000014 – Old Gas Station (NFA)

Site Description Waste Type Regulatory Status
Former retail gas station Petroleum product NFA (8/12/2005 Site Rehabilitation Completion Order issued)

PCA 14 is located at NAS Jacksonville near the northeast quadrant of the intersection of Birmingham and Langley Streets. The area surrounding the structures (i.e., Buildings 26, 26K, 48, and 931) is paved with asphalt.

The Old Gas station was constructed in 1957. Retail business for the station was conducted from Building 26. Four steel 2,000-gallon USTs, formerly containing diesel fuel and gasoline, were situated around Building 26. These tanks were reportedly installed in 1940 and last used in 1970.

Four steel, 10,000-gallon USTs were formerly located near the northeast corner of Building 48, approximately 40 feet south of Building 26. In 1980, these USTs were taken out of service and the fire department filled them with water. All fill pipes, cross-connecting lines, and vent pipes were removed and capped at that time. According to information from base personnel, the four USTs associated with Building 48 were excavated and removed in 1988.

 

UST 000015 – Former Firefighter Training Area (PSC 2/Site 2)

Site Description Waste Type Regulatory Status
Shallow, unlined pit (OCULUS ID: DOD_7_980) Petroleum Product  

UST 15 (also known as PSC 2) is an unlined pit, approximately 120 feet in diameter. From 1966 to 1991, obsolete vehicle chassis and parts were periodically covered with JP-4, JP-5, aviation gasoline, or other petroleum products and ignited to simulate aircraft crashes.

UST 000015, PSC 2 is under a long-term monitoring program.

 

UST 000016 – 103rd Street – Hawkins Property

Site Description Waste Type Regulatory Status
Former single-family residence (OCULUS ID: DOD_7_2692) Petroleum compounds Monitoring Only for Natural Attenuation Approval Order

The former Hawkins property, designated PCA 16, is located in the western portion of Jacksonville, Florida on the south side of 103rd Street (State Road 134) approximately one quarter of a mile east of the Interstate 295 and 103rd Street interchange. The site is approximately equidistant between NAS Jacksonville and Cecil Commerce Center (formerly NAS Cecil Field). The site address is 6952 103rd Street. Currently, the site is vacant and is partially covered with grass and partially wooded.

Hawkins was once bound to the west by an active Texaco gasoline station; however, it is a vacant lot. East of Hawkins is a former Kerr-McGee gasoline station (currently vacant) while the southern portion is wooded beyond, which is a residential area.

UST 000016, is under a long-term monitoring program.

 

UST 000017 – S-3 High Power Turn Up Pad (PSC 57; To be Considered under CERCLA)

Site Description Waste Type Regulatory Status
Concrete pad for High-Power Turn Up (OCULUS ID: DOD_7_2887 and DOD_7_3092) Petroleum Product, chlorinated VOCs NFA transferred to IR Program

The High Power Turn Up Pad (HPTP; PCA 17) is located in the northeast portion of Naval Air Station (NAS) Jacksonville near the Gas Hill (Facility 159) Bulk Fuel Storage and Distribution Facility. The HPTP is located approximately 0.5 mile west-northwest of the Gas Hill (Facility 159), north of the runway. This area of the base is covered mostly by grass, with some areas of asphalt and concrete. Petroleum related impacts were discovered in 1997 while demolishing the old A7 HPTP. Petroleum odor and sheen were observed from the soil and groundwater beneath the concrete pad. Bechtel Environmental, Inc. removed the contaminated soil and transported the material to a thermal treatment unit for disposal.

This site was transferred to the IR Program to fill data gaps and determine if additional actions are required.

 

UST 000018 – Tank Building 3900, Tank G3900 (NFA) Tillie Fowler Park

Site Description Waste Type Regulatory Status
Former UST Site (OCULUS ID: DOD_7_2888 and DOD_7_3093) Petroleum Product Site Rehabilitation Completion Order (12/19/2003)
PCA 18 is the former location of a 2,000-gallon, fiberglass, diesel UST (Number G3900). Building 3900 is constructed of cinder block and is surrounded by a gravel-covered surface. The diesel UST, which was removed in 1995 was located approximately 10 feet west of Building 3900. The base of the slope of the former water treatment tank was situated approximately 25 feet north of the former UST location. On September 11, 1995, a contractor began the tank closure assessment. Prior to removal, most of the diesel fuel was pumped out of the tank; however, while attempting to lift the UST to gain better access to remaining fuel, the UST cracked releasing 50 gallons of petroleum into the excavation. An interim remedial action was initiated, pumping approximately 1,600 gallons of petroleum contact water and removing 6 cubic yards of contaminated soil for disposal.

 

UST 000019 – Potable Water Plant, Building 127E (NFA)

Site Description Waste Type Regulatory Status
Former UST Site (OCULUS ID: DOD_7_3086) Petroleum (Diesel) Product Site Rehabilitation Completion Order (6/26/2003)

Building 127E is constructed of cinder block. The area to the north and west of Building 127E is a maintained lawn. The steel UST containing diesel was formerly located 5 feet west of Building 127E in the grass area. The area east of Building 127E is covered with dirt and construction materials. A chain-link fence separates the water plant grounds from the boat storage area approximately 5 feet south of Building 127E.

The 500-gallon steel UST removed from the site in 1995 was designated UST Number 127E. It was installed in 1941 approximately 5 feet west of Building 127E and was used for storage of diesel fuel for an emergency generator. The last date product was stored in the tank is not known. A contractor completed a Tank Closure Assessment during tank removal in September 1995 and there was no evidence of soil contamination. These results were confirmed during a site assessment in 2002.

 

UST 000020 – Building 669 (NFA)

Site Description Waste Type Regulatory Status
Former UST Site (OCULUS ID: DOD_7_2889) Petroleum (Diesel) Product No Further Action (letter dated 8/12/2002)
PCA 20 is the former location of one 500-gallon steel UST Number G669A. The general location of PCA 20 (UST), within the boundaries of NAS Jacksonville, is east of Building 110 and directly north of Building 669. Tank G669A was reportedly used to store diesel fuel for the small emergency generator previously located inside Building 669.

 

UST 000021 – Building 197 (NFA)

Site Description Waste Type Regulatory Status
Former UST Site   No Further Action (letter dated 8/12/2002)
PCA 21 is the former location of three USTs numbered 197A, 197B, and 197C at Building 197. Building 197 served as a gas station for fleet vehicles. Tank 197A was a 20,000 gallon UST used for the storage of unleaded gasoline. Tanks 197B and 197C were 10,000-gallon tanks used to store unleaded gasoline and diesel, respectively. The three fiberglass tanks were installed in 1998 and the three tanks previously located at the site were removed. On March 18, 1998, the tanks were removed by the Public Works Center, and a tank closure assessment report completed.

 

UST 000022 – Family Quarters I, J, & 1150 (NFA)

Site Description Waste Type Regulatory Status
House 1150 (PCA 22AC) and Quarters J (PCA 22J) UST Sites (OCULUS ID: DOD_7_3126 and DOD_7_3095) Petroleum Product No Further Action (letter dated 8/12/2002)

PCA 22AC is the former location of a UST near House 1150 located at the Housing Subdivision Allegheny Circle at NAS Jacksonville. The UST was used to supply fuel oil to a home’s furnace. On October 15, 1997, the tank was removed by Bechtel Environmental, Inc. and a tank closure assessment was completed. The assessment report, prepared by Bechtel, indicated that the UST and surrounding area was excavated to a total depth of 6 feet below land surface.

PCA 22J is the former location of a UST at Officer’s Quarters J. The former UST was located behind the garage at Quarters J. The UST was used to supply fuel oil to the home’s furnace. On June 10, 1999, the tank was removed and a tank closure assessment was completed. The UST and surrounding area was excavated to a total depth of 6 feet below land surface.

Officers’ Quarters I Petroleum Product Site Rehabilitation Completion Order (dated 12/19/2003)
Officer’s Quarters I is a 2-story residence. The former UST location is between the automobile garage and a brick walkway leading to an antique brick patio at the rear of the house near its northeast corner. Numerous large trees are present on the grounds of the residence, the lawn is well-maintained, and several planted areas are present. The UST was used to supply fuel oil to the home’s furnace. On June 10, 1999, the tank was removed and a tank closure assessment was completed.

 

UST 000023 – Hangar 1000 Tank Site G1000 (NFA)

Site Description Waste Type Regulatory Status
Former UST Site Petroleum Product Site Rehabilitation Completion Order (dated 12/19/2003)
PCA 23 is the former location of UST Number G1000 located at Hangar 1000, NAS Jacksonville. The former UST was located south of the electrical equipment room and west of Building 1000. A security fence that separates a parking area from Hangar 1000 is approximately 14 feet north of the former tank. The UST was used to supply diesel fuel to an emergency generator. In October 29, 1998, the tank was removed and a tank closure assessment was completed. The UST and surrounding area was excavated to a total depth of 3 feet below land surface. No visible signs of petroleum stained soil were present surrounding the tank.

 

UST 000024 – Building 9 (NFA)

Site Description Waste Type Regulatory Status
Former UST Site Petroleum Product No Further Action (letter dated 8/12/2002)
PCA 24 is the former location of a 500-gallon, steel, diesel, UST Number 9A located at Building 9A at NAS Jacksonville. The UST was used to store diesel fuel for a heater boiler in Building 9A. The UST was installed along the east side of Building 9A near the front door. The last date in which product was stored in the UST is not known. On November 13, 1998, a contractor removed the UST and associated piping. During December 1998, a contractor prepared an Underground Storage Tank Closure Report and submitted it to the Navy. Based on information provided in this report, the tank was intact and a visual inspection of the soil did not identify any petroleum staining.

 

UST 000026 – Kemen Test Cell, Building 873 (PCA 26)

Site Description Waste Type Regulatory Status
Jet Aircraft engine testing facility Petroleum Product Additional Site Assessment (From UST 0000002, Reopened due to second tank area removal in 2010 with contamination exceeding regulatory thresholds.)

The Kemen Test Cell, Building 873, is located in the central eastern portion of NAS Jacksonville at Black Point, approximately 200 feet due west from the seawall along the St. Johns River. The Kemen Test Cell is located in the southern portion of the Fleet Readiness Center in OU 3. OU 3 has multiple VOC contaminant plumes that are being investigated under CERCLA.

The Kemen Test Cell, Building 873, operated and continues to operate as a jet aircraft engine testing facility. A 25,000-gallon jet fuel (JP-5) UST, reported to have been in operation between 1974 and 2010, was formerly located approximately 35 feet from the western edge of Building 873. Numerous investigations have been conducted at the Kemen Test Cell to evaluate soil and groundwater impacts identified in the vicinity of the former 25,000-gallon JP-5 UST.

In 2010, a tank (873-1) removal effort was conducted at the site by NAS Jacksonville and contaminated soil and groundwater exceeding FDEP Cleanup Target Levels was confirmed from samples taken during the removal. It is believed that the lines may have discharged; the tank was intact. Two, 12,000 gallon aboveground storage tanks (ASTs) were installed prior to removal of the UST. The ASTs were connected to existing piping once the UST was removed. FDEP letter issued May 17, 2010 requires a Site Assessment Report be prepared (see UST 0000002).

Investigations of soil and groundwater at the Kemen Test Cell near Building 873 are underway to identify and evaluate potential impacts remaining at the site after the successful closure of a 25,000 JP-5 fuel UST in 2010 (see PCA 000002), to satisfy the requirements of a Site Assessment in accordance with Chapter 62-780.600, F.A.C.

 

UST 000119 – Tanks 120 & 1982 and the Fuel Transfer Railroad Sump (PCA 25)

Site Description Waste Type Regulatory Status
Tanks 120 & 1982 and the Fuel Transfer Railroad Sump located in the southern section of PCA 25 Petroleum Product Annual Monitored Natural Attenuation groundwater monitoring.

PCA 25 UST Site 119 is located at the end of Albermarle Avenue east of Taxiway Bravo near the NAS Jacksonville boathouse located on the St. Johns River. PCA 25 UST Site 119 previously contained two 420,000 gallon Bunker C fuel aboveground storage tanks (ASTs). In April and May of 2004 the two tanks (Tank 120 and Tank 1982) and associated piping were cleaned, demolished, and removed from PCA 25. Both tanks contained Bunker C fuel oil and were no longer in use. The majority of associated product lines were drained, flushed, capped, and abandoned in place. During excavation activities, contaminated soil and groundwater was encountered and confirmed by laboratory analytical results. OHC Environmental Engineering, Inc. recommended a site assessment be conducted to determine the horizontal and vertical extent of contaminants that exceeded the FDEP soil cleanup target levels (SCTLs) and the Groundwater Cleanup Target Levels (GCTLs). The Site Assessment Report was completed in July 2011.

Following the recommendation and during a site visit, Tetra Tech and Frank Sigona of NAS Jacksonville observed bulk oil in a railroad sump located in the southern section of PCA 25. It was agreed that excess oil in the sump may be a direct result of former piping abandoned in-place from the former UST Site 119 Fuel Transfer Sump. Due to previously confirmed soil and groundwater contamination and the excess bulk oil being present in the sump, it was recommended to conduct further assessment activities to define the source, as well as the vertical and horizontal extent, of soil and groundwater contamination for the site.

A total of 110 soil borings were advanced throughout the PCA 25 area from October 25, 2005, through August 30, 2006. Twenty of the samples that were submitted for laboratory analysis had petroleum constituents detected in excess of their FDEP SCTLs, which included total recoverable petroleum hydrocarbons (TRPH), benzene, chlorobenzene, ethylbenzene, methylene chloride, 1 methylnaphthalene, 2-methylnaphthalene, acenaphthalene, benzo(a)pyrene equivalents and naphthalene. The water table was encountered at approximately 4 feet below ground surface (bgs). The groundwater assessment results indicated petroleum constituents in soils were not reflected in groundwater. However, sporadic detections at relatively low concentration of contaminants have been detected in groundwater at the site during quarterly groundwater monitoring events conducted from July 2007 to November 2008.

The primary contaminants of concern (COCs) in groundwater at the site have historically been identified as benzene, vinyl chloride, 1-methylnaphthalene, 2-methylnaphthalene, benzo(a)anthracene, benzo(b)fluoranthene and lead. TRPH has been historically analyzed in groundwater because it is a COC in soil.
PCA 25 UST Site 119 is sampled annually to determine whether groundwater at PCA 25 UST Site 119 is eligible for No Further Action Without Controls under Risk Management Option (RMO) I (i.e., no exceedances of the FDEP GCTLs for four quarters, including previous monitoring data) as defined in FDEP Chapter 62-770, F.A.C.; if NFA with Institutional Controls under RMO II will be required; or if continued monitoring to assess Monitored Natural Attenuation is appropriate. Frequency of monitoring was changed from quarterly to annually per FDEP approval at the March 2015 NAS Jacksonville Tier I Partnering Team meeting.

PCA 25 UST Site 119 groundwater is currently monitored annually.

 

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