Pomona Naval Industrial Reserve Ordnance Plant

Prior to 1986, 12 USTs were identified and scheduled for removal. One UST was identified at Site 1, the former NIROP Salvage Yard and Metal Chip Storage Yard. This UST was used to collect spent machining lubrication oil, Freon®-based coolants, and degreasing solvents from metal cuttings collected within a sump set within a concrete pad at Site 1.

In 1986, the plumbing leading to the abandoned Site 1 UST was disconnected and capped in preparation for the removal of the Site 1 UST. Concurrently, a new oil recovery system was installed between the Site 1 sump and a new aboveground storage tank (AST).

In the course of establishing a UST management program for Pomona NIROP, each of the 12 existing USTs were removed in September and October of 1987. Soil with visible and reported contamination exceeding facility-specific cleanup goals was removed along with the USTs. The USTs and affected soil were disposed of off-site in an approved landfill. Based on the reported soil confirmation sample results from each UST site, no additional soil excavation was recommended, with the exception of Site 1, the former NIROP Salvage Yard and Metal Chip Storage Yard.

The sump associated with the UST at Site 1 was discovered to be permeable and replaced. The Los Angeles County Department of Public Works, Waste Management Division (DPW) approved the closure plan, with the exception that additional site assessment be conducted at the former NIROP Salvage Yard and Metal Chip Storage Yard.

The Land Use Covenant does not impose soil excavation restrictions at the former UST locations; however, the entire facility is subject to the site-wide groundwater use restrictions, as well as a prohibition on oil/gas extraction (within former NIROP property west of the Chino Valley Freeway), as specified in Article II, Section 3.02 of the Land Use Covenant.

Soil excavated during the UST removal in the former NIROP Salvage Yard and Metal Chip Storage Area was replaced with clean fill material. IRP Site 1 was the subject of further investigation for chemicals of concern (COCs) in soil, subsequent to the excavation and disposal of the UST and the surrounding soil. The sump was built in a concrete slab to collect the spent lubrication oil, Freon®-based coolants, and degreasing solvents from metal cuttings. Prior to 1986, the waste was pumped into the Site 1 UST. Subsequent to the facility-wide UST removal action, this waste was pumped into the new AST placed on site in 1986.

A report (titled Site Assessment and Remedial Plan at the Salvage Yard) was prepared by Crosby and Overton Environmental in 1988 to determine if soils in the vicinity of the sump located at the former NIROP Salvage Yard Metal Chip Storage Area (Site 1, former NIROP Building 15) had been impacted by waste oils, coolants, and/or degreasers. Three boreholes were drilled to a depth of 20 feet. Soil samples were collected at five-foot intervals and analyzed for total petroleum hydrocarbons (TPH) by EPA Method 418.1. Soil samples collected beneath the Site 1 sump were reported to have TPH concentrations of 620 mg/kg to 89,000 mg/kg. TPH concentrations in the soil excavated beneath the sump exceeded historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment.

A report (titled Site Assessment and Remedial Plan at the Salvage Yard) was prepared by Crosby and Overton Environmental in 1988 to determine if soils in the vicinity of the sump located at the former NIROP Salvage Yard Metal Chip Storage Area (Site 1, former NIROP Building 15) had been impacted by waste oils, coolants, and/or degreasers. Three boreholes were drilled to a depth of 20 feet. Soil samples were collected at five-foot intervals and analyzed for total petroleum hydrocarbons (TPH) by EPA Method 418.1. Soil samples collected beneath the Site 1 sump were reported to have TPH concentrations of 620 mg/kg to 89,000 mg/kg. TPH concentrations in the soil excavated beneath the sump exceeded historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment.

A vapor extraction system (VES) was approved by SCAQMD and installed at Site 1 in 1990. The mechanical vacuum withdrew hydrocarbon vapors from the soil with six extraction/recharge wells, a vapor transport network, a vapor monitoring system, and a carbon absorption system. Four vapor monitoring wells drilled around the Site 1 sump area were used to help define the VOC plume and the extent of TPH contamination of the vadose zone under the sump and metal chip bins area (Table 1-1). The depth of the four wells around the Site 1 sump area was limited to 10 feet. Two wells were drilled in the middle of the contaminated area to a depth of 15 feet bgs. The vapor extraction system successfully removed VOCs from site soil to a concentration reported below 100 mg/kg TPH, which allowed for disposal of the soil in a Class III landfill. Results were reported to DPW.

It was concluded that the vertical extent of soil contamination did not extend below approximately eight feet bgs, and the lateral extent of contamination was limited to the area underlying the sump. Excavation and off-site disposal of soil was conducted below the Site 1 sump. A total of fifty cubic yards of hydrocarbon-contaminated soil was excavated from Site 1 and disposed of off-site. During excavation of soil beneath the sump area, oil contamination was found in surface soil immediately beneath the surrounding concrete slab, in the vicinity of the sump area. The DPW was notified of the lateral extent of contamination and the analytical results. The concrete slab was demolished in the affected area, and the oil-stained soil was excavated and disposed of off-site. The excavation was filled with clean soil, per a conversation between William Collins, NAVFAC SW and Lou Williams, NIROP, June 11, 1991.

Additional remediation was conducted in 1992 and 1993. HMSC contracted Tetra Tech, Inc. to remediate the contaminated soil beneath the concrete slab near the Metal Chip Area in the Salvage Yard. The Regional Water Quality Control Board (RWQCB) established a cleanup level of 100 ppm for total recoverable petroleum hydrocarbons (TRPH) in 1993. The remedial work included breaking and removing the concrete pavement, disposing of the concrete debris, excavating and disposing of hydrocarbon and VOC-contaminated soil reported at concentrations above action levels, and backfilling the excavation pit with clean soil. Approximately 670 tons of hydrocarbon-impacted soil was excavated from the former sump area. Confirmation soil samples were collected from the excavation pit; Confirmation sample results were submitted to the RWQCB for review and approval prior to backfill. RWQCB and Department of Toxic Substances Control (DTSC) staff notified HMSC that the cleanup effort had satisfied the criteria established and authorized Tetra Tech, Inc. to backfill the excavation pits. The contaminated soil was stockpiled, profiled, and transported to TPS Technology’s Adelanto soil recycling facility for processing. Clean, sandy soil was imported from a construction site in San Gabriel, used for backfill material, and compacted to a minimum of 95% of dry density. A site closure report was submitted to the regulatory agencies and approved by the RWQCB.

Based on the documentation presented in this report, HMSC concluded that all the contaminated soil above the 100 ppm TRPH action level in the Salvage Yard Area had been excavated and properly disposed of. The remediation was completed in May 1993 and met the cleanup requirement required by the RWQCB. On August 5, 1993, the RWQCB informed HMSC that the contamination had been sufficiently removed from the affected area and no further action was required.

The Land Use Covenant does not impose soil excavation restrictions at Site 1; however, Site 1 is subject to site-wide groundwater use restrictions specified in Article II, Section 3.02 of the Land Use Covenant.

Since Site 1 is not subject to LUCs/ICs, neither Annual Inspection, nor Five-Year Review Site Inspection reporting is required, unless a site inspection yields evidence that a production groundwater well has been installed.

A petroleum lubricating oil spill occurred on an unknown date within former NIROP Building 39, a Quonset hut constructed in 1967, of which the southern portion was used as an oil storage facility. Approximately 30 55-gallon drums of lubricating oil were stored in the shed. Lubricating oils were disposed of to machining operations as needed. There were no underground oil or fuel lines in the area.

The International Technology Corporation (IT) conducted a Site Investigation at Site 2. IT supervised the drilling of six borings within and adjacent to former NIROP Building 39. Tewnty-one (21) samples were collected in five-foot intervals from depths of 5 to 20 feet bgs and analyzed for TPH using EPA Method 418.1. Two samples were reported to have TPH concentrations exceeding 1,000 mg/kg. The report describes the procedures, analytical results, conclusions and recommendations pertaining to the hydrocarbon migration assessment conducted at former NIROP Building 39.

IT assumed leaching characteristics of motor oil to be similar to that of diesel fuel because of the similar molecular weights. By evaluating site soil characteristics and referencing Table 2-1 in the California Leaking Underground Fuel Tank Manual, IT placed the lubricating oil storage area into the low potential (leaching) category, which estimates the maximum allowable TPH concentrations that could be left in the soil to be 10,000 mg/kg.

IT also stated that since the highest concentrations were reported in samples directly below the asphalt cover, it was possible that some oil had leaked through the asphalt cover into the soil.

IRP Site 2, the Lubricating Oil Storage Area within former NIROP Building 39, was the subject of a removal action in 1992-1993. Excavated soils were reported to have concentrations of TPH in exceedance of the historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment. A total of 50 cubic yards of hydrocarbon-contaminated soil was excavated from Site 2 and disposed of off-site. Subsequent to the removal action, DTSC collected confirmation soil samples. Analytical results indicated that facility-specific cleanup goals were attained by the removal actions. The excavated soil was replaced with clean fill material.

The Land Use Covenant does not impose soil excavation restrictions at Site 2; however, Site 2 is subject to site-wide groundwater use restrictions specified in Article II, Section 3.02 of the Land Use Covenant.

Since Site 2 is not subject to LUCs/ICs, neither Annual Inspection, nor Five-Year Review Site Inspection reporting is required, unless a site inspection yields evidence that a production groundwater well has been installed.

IRP Site 3 was created in response to a leaking hydraulic lift within former Building 7, the Vehicle Maintenance Facility, constructed in 1953. The central hydraulic lift in former NIROP Building 7 had difficulty maintaining hydraulic pressure, indicating a possible hydraulic fluid leak. In June 1989, IT conducted a Preliminary Site Assessment to evaluate subsurface soil conditions proximal to the central hydraulic lift (JEG, 1991). Three soil borings were drilled; soil samples were collected and analyzed. Due to concentrations of TPH reported in exceedance of facility specific cleanup goals, the three borings were deepened to 40 feet. While deepening each of the three boreholes, six additional borings were drilled to 40 feet, in order to determine the lateral and vertical extent of contaminated soil at former NIROP Building 7. Laboratory analysis indicated significant soil contamination existed and a more extensive investigation was warranted. Hydraulic fluid and other (unknown) contaminants were reported in excavated soil that exceeded historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment.

A total of 67 boring and stockpile samples were collected and analyzed for TPH using EPA Method 418.1. Nine of the samples contained TPH concentrations reported in excess of 1,000 mg/kg, with a maximum concentration of TPH reported at 40,300 mg/kg, collected from a depth of 10 feet bgs. An isoconcentration contour map and cross section figure indicated the greatest lateral extent of contaminated soil was approximately 10 feet by 15 feet and occurred at a depth of 5-10 feet bgs.

Considering the volume of affected soil, the type and concentrations of the contaminants, soil characteristics and treatment costs, IT recommended remediation by excavation and off-site disposal in favor of enhanced biodegradation, vapor extraction, and encapsulation. Soil within the Hydraulic Lift Area was the subject of a soil removal action in 1991. Excavated soil was replaced with clean fill material. Soil within the Site 3 Sump Area was the subject of another soil removal action in 1992, which was replaced with clean fill material (Tetra Tech, 1996a).

The excavation and off-site disposal of soil within the Hydraulic Lift Area removal action achieved the cleanup goal of 100 mg/kg for TPH, per a conversation between William Collins, NAVFAC SW and Lou Williams, NIROP, June 11, 1991.

The Land Use Covenant does not impose soil excavation restrictions at Site 3; however, Site 3 is subject to site-wide groundwater use restrictions specified in Article II, Section 3.02 of the Land Use Covenant.

Since Site 3 is not subject to LUCs/ICs, neither Annual Inspection nor Five-Year Review Site Inspection reporting is required, unless a site inspection yields evidence that a production groundwater well has been installed.

Site 4 is located along either side of the northern wall of former NIROP Building 27. Former NIROP Building 27 served as a Navy warehouse and test laboratory. It also contained a hazardous waste storage area. Circa 1989, IT conducted a Site Investigation that included collection of sub-slab and subsurface soil samples within and adjacent the former NIROP Building 27. Soil samples were analyzed for VOCs, SVOCs, metals, and petroleum hydrocarbons (DTSC, 1998). Subsequently, Dan Napier & Associates (DNA) conducted a soil investigation at the north side of former NIROP Building 27. Soil contaminated with SVOCs was reported. Phenol, the only SVOC encountered, was reported in two samples, collected from one foot and three feet bgs at different locations with concentrations of 0.84 mg/kg and 1.0 mg/kg, respectively. No VOCs were reported.

Fact Statement G of the Land Use Covenant specifies that subsurface soils in the area north of former NIROP Building 27 may contain residual hazardous substances with unacceptable health risk for residential land uses.

Under RWQCB and DTSC oversight, Site 4 was the subject of a removal action in 1995. Tetra Tech, Inc. excavated soil that had concentrations of SVOCs reported in exceedance of the historic, facility-specific cleanup goals, from either side of the wall, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment. Excavation confirmation soil samples were collected from the bottom of the excavation and analyzed for SVOCs with the result that no SVOCs were detected. The excavation was backfilled with cement slurry.

The Land Use Covenant imposes soil excavation restrictions at Site 4, limiting excavation to a maximum of four feet bgs without the prior written approval of DTSC. Excavated soil must be tested for the hazardous substances noted in Fact Statement G of the Land Use Covenant, and properly used, treated, and/or disposed of as required by law and the DTSC. Additionally, Site 4 is subject to site-wide groundwater use restrictions, as well as a prohibition of oil/gas extraction, as specified in Article II, Section 3.02 of the Land Use Covenant.

Annual Site 4 inspection submissions are required by DTSC by September 15 of each year (DTSC, 2014b). Cape Robbin Wholesale, the tenant in the newly constructed commercial building located across the footprint of former NIROP Building 27, has not yet been notified of their responsibility to submit Annual Inspection Reports to DTSC. The current address of the new building at Site 4 is 1943 West Mission Blvd., Building F, Pomona, California 91766. However, this first Five-Year Review Report includes photographs and completed Site Inspection Interview Questionnaires as evidence of compliance with the requirements within the Land Use Covenant, including soil, groundwater and oil/gas extraction restrictions allocated to the former NIROP Building 4 Quench Tank Area.

Former NIROP Building 48 was constructed in 1979. It was used for bulk chemical storage for wastewater treatment materials until 1994. Circa 1989, IT conducted a Site Investigation that included collection of sub-slab and subsurface soil samples within and adjacent the western wall of former NIROP Building 48. Soil samples were analyzed for VOCs, SVOCs, metals, and petroleum hydrocarbons.

Subsequently, minor staining and hairline cracks were observed on the concrete floor within the storage bays of former NIROP Building 48. The cracks in the concrete floor could have served as a conduit for spillage to the soil. Versar Inc. recommended that the cracks in the concrete floor be sealed to prevent the release of hazardous materials into underlying soil in the event of a spill. Soil samples were collected and analyzed as part of the WWTP closure plan. No elevated concentrations were reported in the storage bay.

At the west storage bay drain, DNA collected and analyzed soil outside of the western portion of former NIROP Building 48, in the bulk chemical storage area. The samples were analyzed for TRPH, VOCs, SVOCs, and metals. The laboratory result of one soil sample (Sample ID 48D) reported a concentration of 0.06 mg/kg di-nbutylphthalate and arsenic concentrations of 28.5 ppm in the drain and 17.3 ppm in the soil surrounding the west storage bay drain (not included in facility-specific cleanup goals). One of the samples (Sample ID B48-T2) collected outside of former NIROP Building 48 was reported to have 3 ppm beryllium (not included in facility-specific cleanup goals).

In March 1996, Tetra Tech, Inc. supervised two excavations at former NIROP Building 48 in accordance with the Removal Action Work Plan Excavation and Disposal of Metals and SVOC Contaminated Soil from Department 62 of NIROP Pomona Facility. One excavation centered on the floor drain in the western portion of former NIROP Building 48, with floor samples collected at 5.5 feet bgs. A second excavation was conducted outside of the southeast corner of former NIROP Building 48, centered around a soil sample (Sample ID T2), reported with an arsenic concentration of 17.3 mg/kg in a previous investigation. The confirmation soil samples did not contain reported concentrations of arsenic or SVOCs at or above their respective detection limits.

The removal action was completed in June 1996, simultaneously with soil from the former Industrial WWTP (Site 6, Department 62). Under DTSC oversight, Tetra Tech, Inc. conducted excavation and off-site disposal of chromium contaminated soil within Site 5. Excavation confirmation soil samples were collected in this area to a depth of approximately six feet bgs. The confirmation soil samples were reported to have a concentration of chromium in exceedance of facility-specific cleanup goals. Fact Statement G of the Land Use Covenant specifies that subsurface soils in the area west of former NIROP Building 48 on either side of the western wall contain residual hazardous substances with unacceptable health risk for residential land uses.

The Land Use Covenant imposes soil excavation restrictions at Site 5 to a maximum of six feet bgs without the prior written approval of DTSC. Excavated soil must be tested for the hazardous substances noted in Fact Statement G of the Land Use Covenant, and properly used, treated, and/or disposed of as required by law and the DTSC. Additionally, Site 5 is subject to site-wide groundwater use restrictions within former NIROP property west of the Chino Valley Freeway, as specified in Article II, Section 3.02 of the Land Use Covenant.

Annual former NIROP Building 48 inspection submissions are required by DTSC by September 15 of each year. Prologis USLV NEWCA 5, LLC. (Prologis) currently submits Annual Inspection Reports for the developed commercial property at former NIROP Building 48 (west end), with a current address of 1601 West Mission Blvd., Pomona, California 91766. Each Annual Inspection Report includes a completed questionnaire and photographs as evidence of compliance with the requirements within the Land Use Covenant, including soil and groundwater restrictions allocated to Site 5.

A Site Inspection Checklist was completed during the first Five-Year Review Site Inspection, conducted on March 28, 2018. The developed commercial space at the Site 5 location was photographed during the first Five-Year Review Site Inspection.

Former NIROP Building 2 is approximately 600 feet by 1,320 feet and located east of the Chino Valley Freeway and north of Mission Boulevard. Former NIROP Building 2 was constructed in approximately 1952 and was used as the primary production building for missile construction and assembly. Historically, former NIROP Building 2 contained numerous operations and departments, which included machine and painting shops, mechanical assemblies, welding and masking areas, and experimental machine and tool manufacturing. The Site Investigations focused on the eastern end of former NIROP Building 2, identified as the primary manufacturing area. The remaining portions of former NIROP Building 2 were used for offices and conference rooms. A wastewater treatment facility, constructed in 1970 immediately adjacent the eastern wall of former NIROP Building 2, was demolished in 1995.

The contaminants of concern identified during investigations of former NIROP Building 2 were cutting oils and solvents that may have passed through isolation pad separators, surrounding machine foundation pads, or through sumps. The machine pads consisted of large concrete blocks that extended to an approximate depth of four feet below grade. The isolation pads were separated from the main floor by wood, plastic or felt insulation that was placed on all four sides of the concrete isolation pads. The separation materials deteriorated with time and may have served as conduits for the contaminants to migrate downward. The remainder of the floor in former NIROP Building 2 consisted of a six-inch thick, reinforced concrete slab.

Circa 1989, IT conducted a Site Investigation that included the collection of sub-slab and subsurface soil samples within and adjacent former NIROP Building 2. The soil samples were analyzed for VOCs, SVOCs, metals, and petroleum hydrocarbons. Surface and subsurface soil samples were collected below and adjacent to the foundation of former NIROP Building 2 at depths of one foot, three feet, five feet, and ten feet bgs.

Subsequently, the definition and extent of contamination in all areas of concern was determined from reported soil sample analytical results collected by Dames & Moore Consultants, as recommended in the Phase I Environmental Assessment. Analytical results from Department 62 were reported in the Soils Investigation Department 62 Trenching Area. Additionally, Tetra Tech, Inc. reported elevated concentrations of copper, chromium, and lead in the soil. Tetra Tech, Inc. also reported soil sample results for the Plasma Desmear Area which is located along the interior wall of former NIROP Building 2, between the Department 52 and 62 areas. Plasma Desmear soil sample results were reported with elevated concentrations of arsenic and beryllium in the soil. The Plasma Desmear Area soil was also analyzed for SVOCs. Tetra Tech, Inc. reported elevated levels of copper, chromium, and nickel in soil within the WWTP area.

Former NIROP Building 2, Site 6 soil with contaminant concentrations unacceptable to human health risk for residential land uses was excavated to approximately six feet bgs., simultaneously with removal actions within former NIROP Buildings 4, 7, 27, 39, and 48, and the former NIROP Salvage Yard. During these three removal actions, 1,640 tons of hydrocarbon contaminated soil was excavated and transported off-site for disposal. Subsequent to the removal actions, DTSC collected Site 6 confirmation soil samples at a depth of approximately six feet bgs. The confirmation soil samples were reported with concentrations of metals (arsenic, cadmium, chromium, and hexavalent chromium) in exceedance of facility-specific cleanup goals. The excavated soil was replaced with clean fill material. Fact Statement G of the Land Use Covenant identifies areas below former NIROP Building 2 that contain residual hazardous substances, below six feet bgs, with unacceptable health risk for residential land uses.

There were no areas within former Parcel 6, located immediately east of former NIROP Building 2, identified as requiring land use restrictions.

The Surface Processing (metal plating) Area/Department 52 was located within the southeast corner of former NIROP Building 2, between the Metal Chip Storage Area and the Department 62 Wastewater Treatment Area. Exhibit A of the Land Use Covenant recorded by the County of Los Angeles also refers to Surface Processing Area/Department 52 by its original facility name, the Chrome Line Area.

Prior to HMSC's occupancy, the Plating Shop Area contained a chrome plating line that was removed in 1988. Releases occurred from the chrome plating line that damaged the concrete floor in that area.

Tetra Tech, Inc. collected soil samples within Department 52, the former Surface Processing Area. Activities that occurred in this area involved plating operations that used metal etching, plating, and rinse solutions. Reported analytical results indicated elevated levels of total chromium and hexavalent chromium in the soil. Total chromium was reported at a concentration of 154 parts ppm, and hexavalent chromium was reported at a concentration of 94 ppm. The mean background levels as determined the Background Metals Soil Sampling Results were total chromium at 24 ppm and hexavalent chromium at 0.10 ppm.

When the chrome line plating equipment was removed in 1988, the damaged concrete floor was removed, along with four feet of soil beneath the concrete slab. Clean fill material was placed into the excavation, and a new concrete slab was poured across the former Chrome Line Area.

Subsequent to the Department 52 soil sample analysis, beyond the former Chrome Line Area, a removal action work plan was approved by DTSC. The work plan recommended excavation of the total chromium and hexavalent chromium contaminated soil in the surface process area, and collection of confirmation soil samples from each excavation floor and the sidewalls of each excavation. Approximately 140 cubic yards (220 tons) of soil in the former Surface Processing Area was the subject of a removal action completed in June 1996. The soil was loaded into roll-off containers and stored inside former NIROP Building 2 for soil characterization. A minimum of one confirmation sample was collected from each sidewall of each excavation, and at least one confirmation soil sample was collected from the bottom of each excavation, collected at a depth of approximately six feet bgs.

At the request of DTSC, additional soil samples were collected in July 1996 at 5 and 10 feet below the floor and analyzed for PAHs, CAM 17 Metals, and chlorinated solvents. Soil samples collected from the former Surface Processing/Department 52 Area were reported with concentrations of metals including: copper; chromium; hexavalent chromium; nickel; lead, and cadmium in exceedance of the historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment. DTSC approved the backfilling of the area in August 1996. A closure report was submitted to DTSC. Excavated soil was replaced with clean fill material.

The Land Use Covenant imposes soil excavation restrictions at the former Surface Processing Department 52 Area to a maximum of six feet bgs without the prior written approval of DTSC. Excavated soil must be tested for the hazardous substances noted in Fact Statement G of the Land Use Covenant, and properly used, treated, and/or disposed of as required by law and the DTSC. Additionally, the Surface Processing Department 52 Area is subject to site-wide groundwater use restrictions specified in Article II, Section 3.02 of the Land Use Covenant.

Annual former NIROP Building 2 inspection submissions are required by DTSC prior by September 15 of each year. Prologis currently submits Annual Inspection Reports for the remodeled, former NIROP Building 2, with a current address of 1601 West Mission Blvd., Pomona, California 91766. Each Annual Inspection Report includes a completed questionnaire and photographs as evidence of compliance with the requirements within the Land Use Covenant, including soil and groundwater restrictions allocated to Site 6.

A Site Inspection Checklist was completed during the first Five-Year Review Site Inspection, conducted on March 28, 2018. The former NIROP Site 6 Surface Processing Areas were photographed during the first Five-Year Review Site Inspection.

The Waste Water Treatment Plant (WWTP; Department 62) was constructed in 1970. The WWTP operated from 1975 to 1995. The Industrial WWTP/Department 62/Trench Area (also known as Trenching Area) was located outside and adjacent to the southeastern portion of former NIROP Building 2. Exhibit A of the Land Use Covenant recorded by the County of Los Angeles also refers to this area as the Dept. 62 Sumps.

The WWTP processed approximately 130,000 gallons per day of wastewater and process steams, generated mainly from former NIROP Buildings 2 and 4, and discharged treated wastewater pursuant to a permit with the Sanitation District of Los Angeles County. The printed wiring board (PWB)/flex harness fabrication area involved plating operations using metals electro-less and electrolytic plating solutions, rinse solutions, and also metal removal using cupric chloride etch solutions. The trenching network operated as a subfloor utility conduit for piping associated with various plating and rinse baths, tanks, process units, and other systems. The trenching also functioned as a containment system for potential spillages, overflows, or releases from the facilities and piping. The PWB/flex harness fabrication area has since been decommissioned, and all equipment has been removed.

The WWTP treated liquid wastes from the various manufacturing processes at the plant. The manufacturing processes within the plant included the use of acids, alkalis, etchants, and various metal finishing operations. These operations generated wastewater that contained heavy metals, chemical waste, and large amounts of oil and grease. The WWTP consisted of two treatment systems.

Most of the WWTP consisted of the Lance system, a pre-treatment system installed in 1975. This system was designed to treat and remove metals from wastewater. Incoming wastewater was drained into receiving tanks. Water was segregated into various subsystems for treatment, transferring to treating vessels for chemical treatment, then to clarifiers for final treatment. The products of the treatment process were treated wastewater and sludge. The sludge was pumped to a filter press, compressed and dried.

The Andco Electrochemical Heavy Metal Removal system was added to the WWTP in 1985, as a supplemental treatment system to remove metals from the wastewater. The system consisted of electrochemical cells, a polymer mixing unit, and a clarifier. This system provided a secondary treatment to the Lance system. Treated wastewater was discharged into the Los Angeles County sewer system.

The WWTP was operated under a National Pollution Discharge Elimination System (NPDES) Permit issued through Los Angeles County. The WWTP was also operated under a permit-by-rule (PBR) authorization issued through the DTSC. The DTSC provided oversight for the WWTP closure.

Two subsurface soil investigations (January-February 1994 and April-May 1994) were performed within the Department 62 Trenching Area of former NIROP Building 2. Both investigations involved collecting samples from soil borings in the open trench and pit areas at various depths and analyzing these samples for California Code of Regulations (CCR) Title 26 Total Threshold Limit Concentration (TTLC) metals. Both investigations reported elevated levels of copper, and to a lesser extent, chromium and lead in the Western Sump and the Wastewater Treatment Sump areas. Soil samples collected from the former Industrial WWTP area were analyzed with reported concentrations of arsenic and hexavalent chromium in exceedance of the historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment. Some volatile organic compound (VOC) and semi-volatile organic compound (SVOC) contaminated soil was also reported in the area of the wastewater treatment plant.

In December 1994, Tetra Tech, Inc. prepared a final closure plan for the wastewater treatment plant area. Tetra Tech, Inc. cleaned up, dismantled, and disposed of all existing equipment and tanks related to the wastewater treatment from the wastewater treatment plant.

Approximately 620 tons of soil in the former Industrial WWTP (Department 62) was the subject of a removal action completed in June 1996, simultaneous with soil from the western end of the adjacent, former NIROP Building 48 (Site 5). Excavated soil was analyzed with reported concentrations of metals, SVOCs, and some VOCs in the Trench/Sump Area, in exceedance of the historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment.

The removal action at the Industrial WWTP consisted of excavation and off-site disposal of approximately 800 tons of soil contaminated with copper, chromium, hexavalent chromium, nickel, lead, VOCs and SVOCs. The cleanup levels for the COCs were the following: copper 2,000 mg/kg; chromium 8 mg/kg; hexavalent chromium 5 mg/kg; nickel 80 mg/kg; lead 30 mg/kg; VOCs non-detect; and SVOCs non-detect. The Site Closure Report for the Industrial WWTP documents the completion of the removal action, disposal of contaminated soil, and the attainment of cleanup goals. Excavated soil was replaced with clean fill material.

The Land Use Covenant imposes soil excavation restrictions at the former Industrial WWTP area to a maximum of six feet bgs without the prior written approval of DTSC. Excavated soil must be tested for the hazardous substances noted in Fact Statement G of the Land Use Covenant, and properly used, treated, and/or disposed of as required by law and the DTSC. Additionally, the former Industrial WWTP area is subject to site-wide groundwater use restrictions specified in Article II, Section 3.02 of the Land Use Covenant.

Annual former NIROP Building 2 inspection submissions are required by DTSC by September 15 of each year. Prologis currently submits Annual Inspection Reports for the remodeled, former NIROP Building 2, with a current address of 1601 West Mission Blvd., Pomona, California 91766. Each Annual Inspection Report includes a completed questionnaire and photographs as evidence of compliance with the requirements within the Land Use Covenant, including soil and groundwater restrictions allocated to Site 6.

A Site Inspection Checklist was completed during the first Five-Year Review Site Inspection, conducted on March 28, 2018. The former Site 6 Industrial Wastewater Treatment Plant was photographed during the first Five-Year Review Site Inspection.

The former Machine Shop Isolation Pads/Tooling Shops and Mechanical Assembly Area were located in the central-to-northeastern portion of former NIROP Building 2. Though contaminants were not documented from this particular area, soil collected from former NIROP Building 2 was reported to contain arsenic, chromium, hexavalent chromium, VOCs, and SVOCs.

General Dynamics began machine shop activities, which were continued by subsequent operators through approximately January 1993. The machines were placed on concrete isolation pads with wood expansion joints. These isolation pads were found to be saturated with machining oils from spillage and/or leakage. The wood expansion joints may have acted as conduits allowing releases to reach underlying soil. Accordingly, Tetra Tech, Inc. conducted a subsurface soil investigation to determine whether oil spills impacted the underlying soil. During this phase of the Site Investigation, soil samples were analyzed for TPH, heavy metals, VOCs, and SVOCs. The results of the preliminary soil investigation suggested that several small and localized subsurface areas within former NIROP Building 2 had been impacted by petroleum hydrocarbons, or to a lesser extent, chlorinated solvents. Among these impacted areas, two were significant due to the depth of contamination and reported presence of chlorinated VOCs (TCA, PCE). Therefore, it was recommended that the type and magnitude of soil contamination be determined more thoroughly via a follow-up investigation of additional isolation pads, followed by horizontal and vertical delineation of the contamination.

Soil within the former Machine Shop Isolation Pads/Tooling Shops and Mechanical Assembly Area was the subject of a removal action in 1994. Contaminant concentrations reported in excavated soil exceeded the historic, facility-specific cleanup goals. The excavated soil was removed and transported to the Ryan-Murphy’s soil recycling facility in Fontana, California. Clean sandy soil was imported from Anaheim Hills, California and used for backfill material. The imported soil was compacted to a minimum of ninety-five (95%) percent of dry density. The remediation on this site achieved the cleanup requirements required by the RWQCB and DTSC. A closure report was provided to DTSC and a site closure letter was received from DTSC in September 1995. No further action is required.

The Land Use Covenant imposes soil excavation restrictions at the former Machine/Tooling Shops and Mechanical Assembly Area to a maximum of six feet bgs without the prior written approval of DTSC. Excavated soil must be tested for the hazardous substances noted in Fact Statement G of the Land Use Covenant, and properly used, treated, and/or disposed of as required by law and the DTSC. Additionally, the Machine/Tooling Shops and Mechanical Assembly Area are subject to site-wide groundwater use restrictions specified in Article II, Section 3.02 of the Land Use Covenant.

Annual former NIROP Building 2 inspection submissions are required by DTSC by September 15 of each year. Prologis currently submits Annual Inspection Reports for the remodeled, former NIROP Building 2, with a current address of 1601 West Mission Blvd., Pomona, California 91766. Each Annual Inspection Report includes a completed questionnaire and photographs as evidence of compliance with the requirements within the Land Use Covenant, including soil and groundwater restrictions allocated to Site 6.

A Site Inspection Checklist was completed during the first Five-Year Review Site Inspection, conducted on March 28, 2018. The Site 6 location was photographed during the first Five-Year Review Site Inspection.

The Metal Chip Storage Area is located immediately east of former NIROP Building 2 where spent oil and degreasing solvents from metal cuttings were collected in a 550-gallon sump set into a concrete slab and then pumped to an aboveground storage tank. Though contaminants were not documented from this particular area, soil collected from former NIROP Building 2 was reported to contain arsenic, chromium, hexavalent chromium, VOCs, and SVOCs.

Tetra Tech, Inc. collected soil samples during (Part 3 of) the Site Investigation and Remediation (Summary Report) field event. These samples were reported with TRPH concentrations above the 1000 ppm action level. The contaminated soil was removed in 1995, and a new concrete pavement floor was constructed. The removal action was performed by Tetra Tech, Inc. and overseen by RWQCB and DTSC. A closure report was prepared and submitted to DTSC and approved for No Further Action.

Soil within the former NIROP Building 2 Metal Chip Storage Area was the subject of a removal action in 1995. The excavated soil was removed and replaced with clean fill material.

The Land Use Covenant imposes soil excavation restrictions at the former NIROP Building 2 Metal Chip Storage Area to a maximum of six feet bgs without the prior written approval of DTSC. Excavated soil must be tested for the hazardous substances noted in Fact Statement G of the Land Use Covenant, and properly used, treated, and/or disposed of as required by law and the DTSC. Additionally, the former NIROP Building 2 Metal Chip Storage Area is subject to site-wide groundwater use restrictions specified in Article II, Section 3.02 of the Land Use Covenant.

Annual former NIROP Building 2 inspection submissions are required by DTSC by September 15 of each year. Prologis currently submits Annual Inspection Reports for the remodeled, former NIROP Building 2, with a current address of 1601 West Mission Blvd., Pomona, California 91766. Each Annual Inspection Report includes a completed questionnaire and photographs as evidence of compliance with the requirements within the Land Use Covenant, including soil and groundwater restrictions allocated to Site 6.

A Site Inspection Checklist was completed during the first Five-Year Review Site Inspection, conducted on March 28, 2018. The former Site 6 Metal Chip Storage Area was photographed during the first Five-Year Review Site Inspection.

The former Heat Treat Area was located within the southeastern corner of former NIROP Building 2. Soil samples collected from the Heat Treat Area were reported with concentrations of chromium in exceedance of the historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment.

There were two sumps located in the Heat Treat Area: one was used as secondary containment for a solvent degreaser; the other was used as a quench sump for a heat treat oven. Four soil borings were drilled beneath the sump and soil samples were tested for chlorinated solvents, TRPH, total chromium, sulfate, nitrate, chloride and potential hydrogen ion concentration (pH). At the request of DTSC, additional soil samples were collected in July 1996 at 5 and 10 feet below the floor on the east side of the degreaser sump and analyzed for PAHs, CAM 17 Metals, and chlorinated solvents. None of the constituents of concern were reported in the soil samples. No further action is required.

Soil within the former Heat Treat Area was the subject of a removal action between 1994 and 1996. The excavated soil was removed and replaced with clean fill material.

The Land Use Covenant imposes soil excavation restrictions at the former Heat Treat Area to a maximum of six feet bgs without the prior written approval of DTSC. Excavated soil must be tested for the hazardous substances noted in Fact Statement G of the Land Use Covenant, and properly used, treated, and/or disposed of as required by law and the DTSC. Additionally, the Heat Treat Area is subject to site-wide groundwater use restrictions specified in Article II, Section 3.02 of the Land Use Covenant.

Annual inspection submissions for former NIROP Building 2 are required by DTSC by September 15 of each year. Prologis currently submits Annual Inspection Reports for the remodeled, former NIROP Building 2, with a current address of 1601 West Mission Blvd., Pomona, California 91766. Each Annual Inspection Report includes a completed questionnaire and photographs as evidence of compliance with the requirements within the Land Use Covenant, including soil and groundwater restrictions allocated to Site 6.

A Site Inspection Checklist was completed during the first Five-Year Review Site Inspection, conducted on March 28, 2018. The former Site 6 Heat Treat Area was photographed during the first Five-Year Review Site Inspection.

Former NIROP Building 4 was constructed in approximately 1953 and used by the General Dynamics Missile Division for manufacturing processes prior to the establishment of the larger facility at former NIROP Building 2. Former NIROP Building 4 housed operations including Navy gauge and test laboratories, a plating shop, a photo processing laboratory, and a large machine shop at the north end of the building. The machine shop was moved to former NIROP Building 2 in 1983 and the former NIROP Building 4 isolation pads were covered with carpet and floor tile. Circa 1989, IT conducted a Site Investigation that included collection of sub-slab and subsurface soil samples within and adjacent former NIROP Building 4. Soil samples were analyzed for VOCs, SVOCs, metals, and petroleum hydrocarbons. Contaminated soil reported in former NIROP Building 4 was removed and backfilled.

Excavation floor confirmation soil samples were collected within four areas of Site 7 to a depth of approximately six feet bgs. The soil samples were analyzed with concentrations of metals, including arsenic, cadmium and chromium reported in exceedance of the historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment. Fact Statement G of the Land Use Covenant specifies that subsurface soils within the hatched areas of former NIROP Building 4 footprint contain residual hazardous materials with unacceptable health risk for residential land uses.

Trichloroethene (TCE) was reported in a total of eight soil samples collected from six different locations. Two samples were collected from one foot bgs, three samples were collected from three feet bgs, and three samples were collected from five feet bgs. TCE was reported at concentrations from 0.028 mg/kg to 0.51 mg/kg.

SVOCs were reported in a total of 15 samples collected from eight different locations. Nine samples were collected at one foot bgs, and six samples were collected at three feet bgs. Among the SVOCs, only bis(2-ethylhexyl)phthalate, butylbenzylphthalate, chlorophenol, naphthalene, phenol, and phthalate were reported. Phenol was reported in 13 samples and concentrations ranged from 0.4 mg/kg to 2.9 mg/kg. Butylbenzylphthalate (1.6 mg/kg) and phthalate (0.48 mg/kg) were reported at one sample location. Naphthalene (9.4 mg/kg) and bis(2-ethylhexyl)phthalate were also reported at one sample location. Chlorophenol was reported in one sample location at a concentration of 0.35 mg/kg.

Soil samples collected from the former Research and Development/Process/Structural Lab and Sump area were analyzed with concentrations of COCs reported in exceedance of the historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment.

Soil within these areas was the subject of a removal action in 1995. Excavation confirmation soil samples collected to a depth of six feet bgs were analyzed with concentrations of arsenic reported in exceedance of historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment. Excavated soil was replaced with clean fill material.

The Land Use Covenant imposes soil excavation restrictions at the former NIROP Research and Development/Process/Structural Lab and Sump area to a maximum of six feet bgs without the prior written approval of DTSC. Excavated soil must be tested for the hazardous substances noted in Fact Statement G of the Land Use Covenant, and properly used, treated, and/or disposed of as required by law and the DTSC. Additionally, the former NIROP Research and Development/Process/ Structural Lab and Sump area is subject to site-wide groundwater use restrictions, as well as a prohibition of oil/gas extraction, as specified in Article II, Section 3.02 of the Land Use Covenant.

Annual Site 7 inspection submissions are required by DTSC by January 15 of each year. As of the Five-Year Review completed in September 2021, Diversified Association Management, Inc. (DAMI) submits Annual Inspection Reports to DTSC for the Mission 71 West Business Park. These four newly constructed commercial buildings are located across the footprint of former NIROP Building 4. The current addresses of the new buildings are: 1885, 1889, 1933, and 1937 West Mission Blvd., Pomona, California 91766. Each Annual Inspection Report includes a completed questionnaire and photographs as evidence of compliance with the requirements within the Land Use Covenant and the First Amendment, including soil, groundwater and oil/gas extraction restrictions allocated to the former NIROP Building 4 Research and Development/Process/Structural Lab and Sump area.

A Site Inspection Checklist was completed during the first Five-Year Review Site Inspection, conducted on March 28, 2018. The exterior of the current Building Q, 1889 West Mission Blvd., Pomona CA 91766 was photographed during the first Five-Year Review Site Inspection; this building footprint overlies the former Site 7 Research and Development/Process/Structural Lab and Sump Area. However, Ms. Kathy Weinberger (Senior Manager, Facilities and Site Services) at Kavo Kerr, did not allow photographs within Building Q.

Similarly, the tenant (NuSign Supply) of Building S, 1933 West Mission Blvd., Pomona CA 91766 did not allow the first Five-Year Review Site Inspection team to photograph the interior of Building S, citing that she was unable to obtain permission from her supervisor, Mr. Benny Wantan, who was on vacation. The footprint of Building S overlies the former NIROP Building 4 Structural Lab Area. DAMI completed the first Five-Year Review tenant Site Interview Questionnaire. Although photographs were not obtained from Kavo Kerr and NuSign Supply, the inspection team was able to access the facilities to complete the inspections.

A photo processing laboratory existed at the west end of former NIROP Building 4 from approximately 1962 to 1979. It is conceivable that chemicals used in the laboratory, including silver nitrate, were disposed of in laboratory sinks. The laboratory sink water was plumbed to a sump on the north side of the former NIROP building and then to the WWTP. One borehole was advanced to 1, 2, and 3 feet at the location of the old sump. Soil samples were analyzed for heavy metals, pH, nitrates, sulfates, chlorides, and chlorinated solvents.

Soil samples collected from the former Old Photo Processing Shop area were reported with concentrations of arsenic and chromium reported in exceedance of the historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment.

Soil within the former Old Photo Processing Shop area was the subject of a removal action in 1995. Excavation confirmation soil samples collected to a depth of six feet bgs were reported with concentrations of arsenic and chromium in exceedance of historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment. Excavated soil was replaced with clean fill material.

The Land Use Covenant imposes soil excavation restrictions at the former Old Photo Processing Shop area to a maximum of six feet bgs without the prior written approval of DTSC. Excavated soil must be tested for the hazardous substances noted in Fact Statement G of the Land Use Covenant, and properly used, treated, and/or disposed of as required by law and the DTSC. Additionally, the Old Photo Processing Shop area is subject to site-wide groundwater use restrictions, as well as a prohibition of oil/gas extraction, as specified in Article II, Section 3.02 of the Land Use Covenant.

Annual Site 7 inspection submissions are required by DTSC by January 15 of each year. As of the Five-Year Review completed in September 2021, DAMI currently submits Annual Inspection Reports to DTSC for the Mission 71 West Business Park. These four newly constructed commercial buildings are located across the footprint of former NIROP Building 4. The current addresses of the new buildings are: 1885, 1889, 1933, and 1937 West Mission Blvd., Pomona, California 91766. Each Annual Inspection Report includes a completed questionnaire and photographs as evidence of compliance with the requirements within the Land Use Covenant and the First Amendment, including soil, groundwater and oil/gas extraction restrictions allocated to the former NIROP Building 4 Old Photo Processing Shop area.

A Site Inspection Checklist was completed during the first Five-Year Review Site Inspection, conducted on March 28, 2018. The Site 7 former Old Photo Processing Shop Area was photographed during the first Five-Year Review Site Inspection. DAMI completed the first Five-Year Review tenant Site Interview Questionnaire.

The former Old Machine Shop existed at the north end of former NIROP Building 4 from approximately 1962 to 1983. As with former NIROP Building 2, machines were placed on isolation pads with wood expansion joints. Thus, if any oil releases occurred, the wood expansion joints acted as conduits for the oil to the subsurface.

Boreholes were drilled on four sides of the isolation pads to two, four, and six feet, and tested for hydrocarbons, heavy metals and chlorinated solvents. Soil samples collected from the former Old Machine Shop area were reported with concentrations of arsenic, cadmium and chromium in exceedance of the historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment.

Soil within the former Old Machine Shop area was the subject of a removal action in 1995. Excavation confirmation soil samples collected to a depth of six feet bgs were reported with concentrations of arsenic, cadmium and chromium in exceedance of historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment. Excavated soil was replaced with clean fill material.

The Land Use Covenant imposes soil excavation restrictions at the former Old Machine Shop area to a maximum of six feet bgs without the prior written approval of DTSC. Excavated soil must be tested for the hazardous substances noted in Fact Statement G of the Land Use Covenant, and properly used, treated, and/or disposed of as required by law and the DTSC. Additionally, the former Old Machine Shop area is subject to site-wide groundwater use restrictions, as well as a prohibition of oil/gas extraction, as specified in Article II, Section 3.02 of the Land Use Covenant.

Annual Site 7 inspection submissions are required by DTSC by January 15 of each year. As of the Five-Year Review completed in September 2021, DAMI currently submits Annual Inspection Reports to DTSC for the Mission 71 West Business Park. These four newly constructed commercial buildings are located across the footprint of former NIROP Building 4. The current addresses of the new buildings are: 1885, 1889, 1933, and 1937 West Mission Blvd., Pomona, California 91766. Each Annual Inspection Report includes a completed questionnaire and photographs as evidence of compliance with the requirements within the Land Use Covenant and the First Amendment, including soil, groundwater and oil/gas extraction restrictions allocated to the former NIROP Building 4 Old Machine Shop area.

A Site Inspection Checklist was completed during the first Five-Year Review Site Inspection, conducted on March 28, 2018. The Site 7 former Old Machine Shop area was photographed during the first Five-Year Review Site Inspection. DAMI completed the first Five-Year Review tenant Site Interview Questionnaire.

Soil samples collected from the former Quench Tank area were reported with concentrations of arsenic and chromium in exceedance of the historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment.

Soils beneath the former quench tank were selected for evaluation as part of the Phase II of the Part 4 investigations. Soil samples were analyzed for TRPH, VOCs, SVOCs, and metals.

Soil within the former Old Quench Tank area was the subject of a removal action in 1995. Excavation confirmation soil samples collected to a depth of six feet bgs were reported with concentrations of arsenic and chromium in exceedance of historic, facility-specific cleanup goals, per the Facility-Wide Screening Level Human Health and Ecological Risk Assessment. Excavated soil was replaced with clean fill material.

The Land Use Covenant imposes soil excavation restrictions at the former Quench Tank area to a maximum of six feet bgs without the prior written approval of DTSC. Excavated soil must be tested for the hazardous substances noted in Fact Statement G of the Land Use Covenant, and properly used, treated, and/or disposed of as required by law and the DTSC. Additionally, the former Quench Tank area is subject to site-wide groundwater use restrictions, as well as a prohibition of oil/gas extraction, as specified in Article II, Section 3.02 of the Land Use Covenant.

Annual Site 7 inspection submissions are required by DTSC by January 15 of each year. As of the Five-Year Review completed in September 2021, DAMI currently submits Annual Inspection Reports to DTSC for the Mission 71 West Business Park. These four newly constructed commercial buildings are located across the footprint of former NIROP Building 4. The current addresses of the new buildings are: 1885, 1889, 1933, and 1937 West Mission Blvd., Pomona, California 91766. Each Annual Inspection Report includes a completed questionnaire and photographs as evidence of compliance with the requirements within the Land Use Covenant and the First Amendment, including soil, groundwater and oil/gas extraction restrictions allocated to the former NIROP Building 4 Quench Tank Area.

A Site Inspection Checklist was completed during the first Five-Year Review Site Inspection, conducted on March 28, 2018. The exterior of the current Building Q, 1889 West Mission Blvd., Pomona CA 91766 was photographed during the first Five-Year Review Site Inspection; this building footprint overlies the former Site 7 Quench Tank Area. However, Ms. Kathy Weinberger (Senior Manager, Facilities and Site Services) at Kavo Kerr, did not allow photographs within Building Q, but the inspection team was able to access the facility to complete the inspection. DAMI completed the first Five-Year Review tenant Site Interview Questionnaire.