Areas: 1, 2A & 2B, 3, 4, 5 & 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28

Area 1
Available records indicate that Area 1 was occupied by warehouses used for grain, fertilizer, and produce storage from at least 1985 to sometime after 1979 when the structures were demolished and removed. No soil or groundwater sampling has been conducted at this parcel. A Phase I Environmental Site Assessment was performed on the property in 1994. No visible evidence of contamination or other potential concerns were identified during site visits conducted in 1993, 1997, and 2005. No further investigation is recommended at this time. The property is currently vacant.

Area 2A and 2B
Area 2A comprises the majority of the northern portion of the property. The southern boundary of Area 2A is equivalent to the southern side of Market Street (where it intersects with Lincoln Street). Area 2B comprises the remaining southern protion of the property.

Historic use of Area 2A and Area 2B included aboveground storage tanks (bulk storage), a lumber yard and a paint company (for Area 2A), and other industrial land uses. In June 2005, a “windshield” reconnaissance of the properties identified remediation-related equipment on Area 2A, but the property was otherwise vacant.

A total of over 65 groundwater monitoring wells have been installed in the vicinity of Areas 2A and 2B. Quarterly monitoring of these wells has taken place since 2002. The primary contaminants of concern identified in groundwater at Area 2A include total petroleum hydrocarbons (TPH), volatile organic compounds, semi-volatile organic compounds and metals. The primary contaminants at Area 2B include TPH and TPH-related compounds from previous land uses.

Individual investigations completed on Area 2A have included a soil gas, soil and groundwater investigation in 1989 and 2002; soil and groundwater investigation, 1991 and 1996; Phase I Environmental Site Assessment, 1995 and 1998; tidal influence study, 1999; site characterization, including preparation of a preliminary endangerment assessment, 1999; cone penetrometer testing, 2001 and 2002; dual phase extraction feasibility test, 2003; underground utility search (pipelines), 2004; human health risk assessment (expected to be finalized in early 2006 under the California Department of Toxic Substances Control [DTSC]); deep groundwater zone assessment, 2004 and 2005; and pipeline removal, soil excavation and soil vapor extraction well installation, 2004 and 2005.

For Area 2B, investigations completed for the property include: a Phase I Environmental Site Assessment, 1995 and 1998; geophysical investigation, 1998; and site characterization and preliminary endangerment assessment, 1999.

Interim remedial actions are being conducted or are planned for three operable units (OUs) currently identified at Area 2A. The OUs were defined for the purposes of remediation under oversight from the Central Valley Regional Water Quality Control Board and DTSC. The City of Stockton Department of Housing and Redevelopment has entered into settlement with former owners/operators and will be responsible for remediation at two of the three OUs on Area 2A. The former owner/operator will be responsible for remediation at the third OU. Future investigation and remedial actions, with regulatory oversight, are required at Area 2A. Additional investigation and remedial actions may also be warranted at Area 2B.

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Area 3
Historic land use of Area 3 has included a lumber yard and planing mill from 1895 through at least 1972. A railroad spur crossed the center of the site as noted in a 1970 aerial photograph. A file review found a permit for the installation of one 2,000-gallon gasoline underground storage tank (UST) in the southeastern portion of the site, and a 250-gallon UST in the northwestern corner. No USTs, potential USTs, or UST remains were identified during a ground penetrating radar survey of the property in 1998 or during construction or soil excavation activities at the site.

During development of Area 3 in July 2004, contamination was encountered beneath the former railroad tracks at the location of a French drain. Contaminants present included Total Petroleum Hydrocarbons (characterized as diesel) and metals. The core of the contaminated soil was removed from the site by excavation (with regulatory approval). The work was completed in November 2004, and redevelopment of the property proceeded. All of Area 3 was improved with an office building and surface parking lot. The grand opening of the WorkNet office building was celebrated in November 2005.

The City of Stockton Department of Housing and Redevelopment (Agency) has entered into a Voluntary Cleanup Agreement (VCP) with the California Department of Toxic Substances Control (DTSC) for oversight of lead contamination on the property. A soil management plan was completed for lead and a deed restriction recorded on the property limiting it to commercial and industrial land uses. A VCP with the Central Valley Regional Water Quality Control Board for petroleum contaminated soil and groundwater that emanated from the French drain has also been completed. However, additional groundwater monitoring will be required for several years.

The Agency is currently having discussions with DTSC and the RWQCB regarding the appropriate agency to enter into a Polanco Act Environmental Oversight Agreement for Areas 3, 4, and 24. A draft workplan has been prepared by the Agency to assess subsurface conditions at Areas 3, 4 and 24. Commercial redevelopment is planned for the area not yet developed.

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Area 4
Area 4 was historically used for residential purposes, but also was the location of tire storage (1979) and commercial buildings. By 1950, the property was used for furniture manufacturing and packed fruit and sugar storage. A railroad spur crossed the center of the site as noted in a 1970 aerial photograph. No underground tanks (USTs), potential USTs, or UST remains were identified in a ground penetrating radar survey of the site in 1997. The site is currently vacant.

Total petroleum hydrocarbons as gasoline, diesel, and semi-volatile organic compounds have been identified in site soils. A soil and groundwater investigation and geophysical survey were completed at the site 1999. Further investigation of the site is planned as described under the Area 3 discussion.

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Areas 5 and 6
Area 5 was historically used for residential purposes and a school. No industrial land use, underground storage tanks, or other environmental concerns were identified for this property during preparation of a Phase I Environmental Site Assessment (1994) or during a ground penetrating radar survey (1997). No further investigation was recommended in the Phase I investigation. No soil or groundwater sampling has known to have been conducted for this property. The property is currently vacant and unpaved.

Area 6 was historically used for residential purposes and as a parking lot and commercial space. No industrial land use, underground storage tanks, or other environmental concerns were identified for this property during preparation of a Phase I Environmental Site Assessment (1994) or during a ground penetrating radar survey (1997). No soil or groundwater sampling has known to have been conducted for this property. No further investigation was recommended in the Phase I ESA. The property is currently vacant.

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Area 7
Area 7 was historically used as a tourist garage, service station and auto repair shops from at least 1917 to sometime after 1950. The previous building at the site was constructed in 1961 as a banking facility. Soil and groundwater investigations and a geophysical survey were completed on the property from 1991 to 1997.

This property, along with all the other parcels in this block, were recently redeveloped as the City Centre Cineplex, with associated retail and public plaza. Area 7 was remediated under the oversight of the Central Valley Regional Water Quality Control Board (CVRWCB). The CVRWQCB issued a No Further Action Letter on 6 April 2000.

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Area 8
Area 8 was occupied by a Masonic Hall from at least 1895 to sometime after 1917. Automotive related uses, including tire sales and service occupied the site until demolished as part of the City Centre Cineplex and public plaza development referenced in Area 7. One waste oil underground storage tank was removed from the property and a No Further Action letter was granted by the Central Valley Regional Water Quality Control Board on 6 April 2000.

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Area 9
Historic uses of Area 9, known as Weber Block, go back as far as the 1850’s. Initially, freight sheds and transportation loading terminals were located on the northern and southern portions of the property, with the Stockton Channel extending across the center of the property to its point of termination at El Dorado Street. Then, in the early 1950s, the Channel was covered by a parking lot supported on treated wood piles. A gasoline service station was operated on the northeastern portion of the property from approximately 1955 to the early 1980s. When the gas station shut down, the building was occupied by a tire and automotive repair shop. All underground tanks (USTs) associated with these former land uses were removed from the property. Treatment systems were operated on the site from approximately 1992 through 1996 to remove contamination associated with the former USTs. Case closure on these USTs tanks was obtained in 2002.

Environmental investigations including Phase I and Phase II Site Assessments, and a PEA (“Preliminary Endangerment Plan”) under oversight of DTSC, were completed on the property starting in the mid-‘90’through site closure in 2000. The property was successfully cleaned up, the parking lot with creosote piers removed, and the property redeveloped by the City of Stockton Redevelopment (Agency) into the Dean DeCarli Waterfront Plaza. The Agency was awarded the 2002 Phoenix Award by the U.S. Environmental Protection Agency and the California Redevelopment Association’s 2004 Award of Excellence for Brownfields Redevelopment.

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Area 10
Area 10 was formerly Banner Island, an island that was reclaimed in the 1920s. Dredge spoils and solid waste may have been used as part of the fill. A former ship building facility was present from the 1930s to the 1970s when the facility was removed and cleared from the site. A ship building and steel fabrication shop, a ship building yard, a fitting shop, dock, and paint storage area formerly occupied the subject property. The site has been the subject of environmental investigation from 1990 and 1999.

Cleanup on Area 10 was performed in conjunction with Areas 11, 12, 15, 16, 20, and 21 for the Stockton Events Center using an approved RDIP (“Remedial Design and Implementation Plan) under DTSC oversight. Previously, Phase I and Phase II Site Assessments, a PEA, and a RAP (“Remedial Action Plan”) were all completed under DTSC oversight.

The Stockton Events Center Redevelopment project will include a multi-facility center with an indoor arena (located primarily on Area 10) and outdoor ballpark (located primarily on Areas 11, 13, 20 and 21), a parking structure (located primarily on Areas 15 and 16), hotel with conference facilities (located on adjacent property), a restaurant and retail space, and open space along the waterfront. The ballpark was opened to a sell-out crowd on April 28, 2005. The cleanup has been completed with some remaining operations and maintenance required, specifically groundwater monitoring wells and a deed restriction. Final approval on the cleanup from the California Department of Toxic Substances Control, the oversight agency has not yet been granted, but is expected soon.

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Area 11
This property was historically used for warehouses, steel fabrication, and a railroad spur crossed the site. A soil and groundwater investigation and geophysical survey were completed in 1999.

Cleanup on Area 11 was performed in conjunction with Areas 10, 12, 15, 16, 20, and 21 for the Stockton Events Center. See Area 10 for details.

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Area 12
Area 12 was historically used for a variety of past land uses including a ship yard and ship building, paint shop, coal and lumber storage, planing mill, machine shop, and steel fabrication. Sometime after 1970, the property was developed into a multi-storied office building and parking lot known as “Marina Towers.”

A soil and groundwater investigation was completed on the property in 1999. A variety of contaminants including total petroleum hydrocarbons (TPH) as gasoline, diesel, motor oil, volatile organic compounds, and metals were detected in the soil, and TPH as diesel in the groundwater.

When this property was obtained by the City of Stockton, the former office building was demolished and the parking lot removed from the site. No additional environmental testing or cleanup is known to have been performed following these actions. Area 12 has been redeveloped as part of the Stockton Events Center, specifically as a surface parking lot for the ballpark. No further remediation is needed for the current land use.

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Area 13
Area 13 was historically used for a variety of industrial/commercial purposes including an iron works/foundry, machine shop, pipe storage, oil storage, metal working, electrical supply, and an auto warehouse. The site continues to be used by multiple industrial businesses. A Phase I investigation was performed in 1997. The Phase I recommended that a soil and groundwater investigation be conducted by a qualified environmental professional(s), under the direction of a regulatory agency prior to redevelopment. No soil or groundwater sampling is known to have been conducted at this parcel. A Sampling and Analysis Plan (SAP) was prepared for this property under the Brownfields Supplemental Pilot Project, but it was not carried out due to the City’s inability to gain access for testing purposes from the property owner.

A brick building in the northeast corner of Area 13 which housed the offices of the Stockton Iron Works has been designated as eligible for listing on the National Register in the Office of Historic Preservation’s Historic Property Data File. Area 13 may also be the location of a significant prehistoric Native American Site – a Yokut Village Mound (see Area 17 for more details).

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Area 14
Area 14, known as the Colberg Boat Works, was historically used for a variety of purposes including boat/vehicle storage, boat works/repair, steel fabrication, sand blasting, machine shop, paint storage, planing mill, match making, lumber storage, cultivated land, and residential. A Phase I investigation was performed in 1997 and 2002. The property was cited by the State Department of Fish and Game in 1990 uncontrolled releases of sand blast waste (i.e., lead paint) into the Stockton Channel that may have resulted in localized fish kills.

A Phase II investigation was performed in 1995 by the property owner, to assess four underground storage tanks (USTs) containing gasoline and diesel that were removed from the site. Total petroleum hydrocarbons (TPH) as gasoline and diesel, oil and grease, volatile organic compounds, and metals were detected in soil and groundwater samples collected at the site. In a letter dated September 2, 2003, San Joaquin County Environmental Health Division confirmed the completion of the site investigation and corrective action plan for the four tanks.

The California Department of Toxic Substances Control (DTSC) prepared a Preliminary Assessment (PA) of the property in January 2003. The PA concluded that potential soil and groundwater contamination from sandblast waste that was formerly stored on the property is unknown. Buildings on the property may also potentially contain asbestos and other contaminants. Further assessment in the form of a site investigation was recommended by DTSC; additional sampling was recommended to determine the nature and extent of contamination to groundwater and surface waters. The site is currently used for warehouses, including limited steel fabrication.

According to a Phase I Environmental Site Assessment prepared for adjoining properties in 2002, the Colberg Boat Works on Area 14 was recorded during a historical resource inventory, but has not been entered into the Historic Preservation’s Historic Property Data File. At the time of recording, the boat works may have been eligible for listing in the National Register, but a formal evaluation was not completed. It is also possible that a portion of the prehistoric village site described in Area 17 may have been located onsite.

A Sampling and Analysis Plan was prepared for this property (See Property 13 for details), but the Agency was unable to obtain access for testing purposes from the property owner.

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Area 15
Area 15 was used historically for a variety of land uses including residential, an electric company, oil storage, plating works, dry cleaning, roofing materials storage, neon sign manufacturing, telephone company storage, and lastly, as part of an automotive dealer and repair. A soil and groundwater investigation and geophysical survey was completed in 1999. Both Areas 15 and 16 were enrolled in the LUST (Local Underground Storage Tank fund) by the owner of the automotive dealership. When the Agency bought these properties in 1999, rights under the tank fund were assigned to the Agency.

Cleanup on Area 15 was completed in conjunction with Areas 10, 11, 12, 16, 20, and 21 for the Stockton Events Center. See the discussion under Area 10. The cleanup has been completed with some remaining operations and maintenance required, specifically groundwater monitoring wells and a deed restriction. Final approval on the cleanup from the California Department of Toxic Substances Control, the oversight agency, has not yet been granted, but is expected soon.

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Area 16
Area 16 was used historically for a variety of land uses including a creamery, lumber yard, railroad tracks, auto sales, auto body shop and spray painting. A soil and groundwater investigation and geophysical survey were completed in 1999. As described under Area 15, this property was purchased from Chase Chevrolet in 1999 and the tank fund application assigned to the Agency. A vapor extraction system had already been installed in Area 16 that was taken over and upgraded by the Agency prior to initiation of the Stockton Events Center project, as described in Area 10. Once the comprehensive cleanup was undertaken for this larger project, the vapor extraction system was dismantled and cleanup completed pursuant to the RDIP. There are some remaining operations and maintenance required, specifically groundwater monitoring wells and a deed restriction. Final approval on the cleanup from the California Department of Toxic Substances Control, the oversight agency, has not yet been granted, but is expected soon.

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Area 17
This property, owned by the City of Stockton, was used historically for ship building and dockside loading and unloading operations. The property is often referred to as “Miner’s Levee.” The site is currently vacant and the west half used for storage by the Stockton Ironworks block (i.e., Area 13).

A Phase I Environmental Site Assessment for Area 13 (1997) which included Area 17, recommended that soil and groundwater sampling be conducted to assess the potential impacts related to historic industrial operations at the site. Soil and groundwater sampling has not been conducted on the property. Area 17 was included with Areas 13 and 14 in the Sampling and Analysis Plan (SAP) for Phase II soil and groundwater testing.

Portions of Area 17 are reportedly the location of a significant prehistoric Native American site, referred to as the Stockton Channel Mound. The site was occupied by the Yatchicumne (Yokut) Native Americans. Miner’s Levee is also Historical Landmark #17, as recorded at the City of Stockton Planning Division, and is the location at which the California Transportation Company built and launched the famous sternwheelers, the Delta King and Delta Queen between 1923 and 1927.

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Area 18
Area 18 was used historically for auto repair, used car storage, spray painting, paint storage, beer warehouse, welding and residential purposes. The site is currently used for industrial/commercial and residential purposes, and portions of the property are vacant. With the exception of some soil sampling conducted in association with a waste oil spill in 1993, no soil or groundwater sampling has been conducted at this parcel.

A Phase I environmental site assessment (ESA) was completed for the property in 2002. The Phase I ESA recommended that a Phase II investigation be conducted to assess the presence of subsurface soil and/or groundwater contamination at the site. The work should be conducted by a qualified environmental professional(s) under the direction of a regulatory agency and prior to any site redevelopment.

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Area 19
Area 19 was used historically for a variety of uses including, stables, a water supply company, potato chip factory, auto repair, new automobile storage, lumber warehouse, radiator shop, and residential. The site is currently used for primarily commercial/industrial purposes.

A Phase I Environmental Site Assessment was performed in 2002. Based on the findings of the Phase I, the report provided recommendations for further action to determine whether current or historical releases of hazardous materials have had the potential to affect Area 19. No soil or groundwater sampling is known to have been conducted to date. Any environmental investigations should be conducted by a qualified environmental professional(s) under the direction of a regulatory agency prior to the time of any site redevelopment activities.

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Area 20
Area 20 was used historically as a switching yard for the Western Pacific Railroad. Soil and groundwater samples were collected at the property in 1999 and was part of the regulatory oversight activities described under Area 10. No petroleum hydrocarbons were identified in the samples. Arsenic was identified at elevated levels in soil.

The site is currently being redeveloped as part of the Stockton Events Center. Cleanup on Area 20 was performed in conjunction with Areas 10, 11, 12, 15, 16, and 21. The cleanup has been completed with some remaining operations and maintenance required, specifically groundwater monitoring wells and a deed restriction. Final approval on the cleanup from the oversight agency, DTSC, has not yet been granted, but is expected soon.

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Area 21
Area 21 was used historically as a railroad switching yard and dairy distribution. A soil and groundwater investigation was completed on the property in 1999. Total petroleum hydrocarbons as gasoline and diesel, volatile organic compounds, semi-volatile organic compounds, and metals were detected in soil and groundwater. Samples were collected under oversight of the CVRWQCB and the site was enrolled in the LUST program by the owner at the time, Crystal Creamery. The site was subsequently acquired by the City of Stockton as part of the Stockton Events Center complex. Cleanup on Area 21 was performed in conjunction with Areas 10, 11, 12, 15, 16, and 20. Area 21 has been developed as a paved parking lot fronting the ballpark. The cleanup has been completed with some remaining operations and maintenance required, specifically groundwater monitoring wells and a deed restriction. Final approval on the cleanup from the oversight agency, DTSC, has not yet been granted, but is expected soon.

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Area 22
Area 22 was used historically as cultivated land, a grocery warehouse, new car storage, auto repair, and for boat service and storage. Two underground storage fuel tanks were formerly operated on the property; and a “no further action” letter was issued by San Joaquin County Environmental Health Division on November 29, 2000.

A Phase I Environmental Site Assessment (ESA) was completed for the property in 2002. The Phase I ESA recommended that a Phase II investigation be conducted to determine whether current or historical releases of hazardous materials had the potential to affect Area 22. The Phase II ESA should be conducted by a qualified environmental professional(s) under the direction of a regulatory agency prior to any site redevelopment. The site is currently used for commercial/ industrial purposes.

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Area 23
Area 23 was used historically as a contractor storage yard, boat storage, railroad tracks, and residential. A Phase I Environmental Site Assessment (ESA) was performed in 2002. The Phase I report recommended that a Phase II investigation be conducted to determine whether current or historical releases of hazardous materials had the potential to affect Area 23. No soil or groundwater sampling has been known to have been conducted at this location. The Phase II ESA should be conducted by a qualified environmental professional(s) under the direction of a regulatory agency prior to any site development. The site is primarily used for industrial/ commercial purposes, although there is a single family residence on Fremont St.

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Area 24
Area 24 was used historically for industrial purposes including a beer warehouse, offices and railroad tracks. The closed beer warehouse was converted into the Children’s Museum of Stockton in 1993. Office development is contemplated on the western half of the block. Two groundwater monitoring wells located on the west edge of the property were installed as part of the assessment described under Area 2a, and to assess possible migration of contamination from 2a. Another well in the northwest corner was installed as part of a UST closure north of Area 24 before that tank closure was finalized. These wells contained total petroleum hydrocarbons (as diesel and motor oil) and associated volatile organic compounds, semi-volatile organic compounds, and several metals in groundwater above laboratory reporting limits. The Stockton Redevelopment Agency is using its authority under the Polanco Redevelopment Act to move soil and groundwater cleanup forward on Area 24 in coordination with responsible parties (i.e., the historic railroad companies) for this property, as well as Areas 3 & 4 (See Area 3 for more details).

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Area 25
Area 25 was historically used for fuel storage, specifically an ARCO station and mini-mart. This property was acquired by the Stockton Redevelopment Agency is 1999, so that it could be redeveloped as part of the Weber Points Event Center. After it was discovered that the UST’s associated with the gas station were leaking, the Agency used its Polanco Redevelopment Act authority to compel monitoring and cleanup by the responsible party (i.e., ARCO). Total petroleum hydrocarbons as gasoline and associated volatile organic compounds and the fuel oxygenate methyl tert butyl ether (MTBE) are currently being monitored by ARCO under the oversight of the San Joaquin County Environmental Health Department to ensure that the groundwater contamination from Area 25 moving downgradient to Area 9 and further east is fully reported and characterized. The surface area has been redeveloped as the above mentioned park, although monitoring wells continue on-site

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Area 26
Area 26 was used historically for ship building and plating operations. The site is currently used for industrial/commercial purposes including automotive repair, sheet metal working, and as a boat storage facility. Total petroleum hydrocarbons as gasoline and diesel, volatile organic compounds, and selected metals have been identified in site soils and groundwater. These environmental investigations were completed in 1996 through 2000, as reported in a Phase I Environmental Site Assessment completed for adjoining properties in 2002. It is unknown if additional investigations have been completed at the site.

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Area 27
Area 27 was used historically by the Texaco Company for oil/fuel storage in above ground tanks from at least 1950 to at least 1972. At least four tanks were 20,000 gallons in size. A Phase I ESA was completed for this property in 2004. The Phase I concluded that the property was not observed to be involved in the generation, treatment, storage or disposal of hazardous waste, and did not contain any asbestos-containing material, urea formaldehyde insulation, radon gas, underground tanks, or transformers with dielectric fluid. No subsurface quality data are known to have been collected at the site. The site is currently used for boat-related light industrial activities.

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Area 28
Area 28 was used historically as a carpenter shop, laundry and pet hospital, aluminum awning manufacturing, multi-space commercial space, and parking. A Phase I ESA was completed for the property in 2004 (see Area 27 for details of this assessment). No subsurface quality data have been identified. The site is currently used for boat-related light industrial activities.

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