RE: Public Comment Period regarding proposed closure of the following four Leaking Underground Fuel Tank (LUFT) Cases:

Transcription

1 2646 Palma Drive, #450 Ventura, CA P F October 17, 2014 UCSB Environmental Health & Safety Attn: Ms. Jodi Woods 565 Mesa Road Santa Barbara, California RE: Public Comment Period regarding proposed closure of the following four Leaking Underground Fuel Tank (LUFT) Cases: Building 555 Marine Biotechnology Laboratory - loading dock area, Case No Building 577 Former Marine Biology - east side of building, Case No Building 510 UCSB Facilities Management, near Central Garage; Case No Building 336 UCSB Facilities Management, Central Garage; Case No The Santa Barbara County Public Health Department, Environmental Health Services Division (EHS) Leaking Underground Fuel Tank Program has determined that the referenced Sites are eligible for closure under the State Water Resources Control Board s Low Threat Closure Policy (LTCP). The policy requires a 60-day comment period and notification by mail or other notice to the Staff and Students of the University of California Santa Barbara (UCSB), the City of Santa Barbara Airport District, the Goleta Water District, the Goleta West Sanitary District, and to all fee title holders and tenants within 200 feet of the extent of the residual groundwater plume, if any. Please see the enclosed map and the four notices from the Santa Barbara County Public Health Department, EHS, dated October 17, Public comment may be submitted in writing, no later than (60 days) after the date of the attached notice. See the attached brief information page, and more information is available on the GeoTracker website at Please direct any comments to: Santa Barbara County Public Health Department Environmental Health Services Division, LUFT Program Attn: Mr. E. Steven Nailor 2125 S. Centerpointe Parkway, Suite #333 Santa Maria, CA, Yours very truly JHA Environmental, Inc. Wallace A. Jensky, II Professional Geologist Attachment: Four LTCP Public Comment Information Sheets ENVIRONMENTAL REMEDIATION SERVICES Contractor s License: CA A HAZ

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3 SITE NAME: UCSB Bldg. 336, Vehicle Maintenance Facility, Tank #2 SITE ADDRESS: UCSB, Building 336, Santa Barbara, CA SITE ID: The Santa Barbara County Public Health Department, Environmental Health Services Division (EHS) Leaking Underground Fuel Tank (LUFT) Program provides regulatory oversight for the cleanup of contamination released from underground storage tanks. The State Water Resource Control Board (SWRCB) has adopted policies that allow, in certain circumstances, the leaving-in-place of contamination at concentrations that have been determined not to pose a threat to human health or the environment. The Santa Barbara County Public Health Department EHS LUFT intends to close the investigation and cleanup of the above referenced property (Site) in accordance with the SWRCB s UST Low-Threat Closure Policy (LTCP). The LTCP requires a public notice to be mailed to adjacent parcel owners and tenants. This Site is undergoing a 60-day public comment period. The information on this form presents the conditions at the site and is based on assessment/remediation activities completed to date. If you wish to obtain additional information, please go to the SWRCB s GeoTracker website at If you have further questions, contact Mr. E. Steven Nailor at the EHS LUFT at The Public Comment period is an opportunity for the public to voice their concerns. A record will be kept of those comments as well as a summary of that information. 1. Brief description of the release/source/extent including dates In October 1993, two underground storage tanks (USTs) were removed from the Site and impacts were noted in the shallow soil and perched groundwater. The perched groundwater is found as shallow as 2 feet below ground surface (bgs). Several groundwater wells were installed to assess the extent of impacts to groundwater. Groundwater monitoring has occurred for more than eight years. The plume is reportedly stable and has decreased in concentration over time. 2. Description of structural encumbrance, if applicable There is currently a large dual Con-Vault above-ground storage tank (AST) located over the location of the former UST pit. 3. Description of remedial actions In 1993, 138 tons of the most highly impacted soil were removed with the USTs. In 1995, additional soil was removed during construction activities east of the former tank pit. In 2000, additional soil was removed during construction activities northeast of the former tank pit. Groundwater remediation consisted of oxygen release compound (ORC) placed in several wells for a period of six months. 4. Description of fate and transport The Site is underlain by the Miocene age marine Monterey Shale. The Monterey Shale is known to have naturally occurring oil seeps and tars at the shallow soil interface. 1

4 SITE NAME: UCSB Bldg. 336, Vehicle Maintenance Facility, Tank #2 SITE ADDRESS: UCSB, Building 336, Santa Barbara, CA SITE ID: Description of risk to water quality, public health and safety, and the environment The Site located south and outside of the Goleta Groundwater Basin and is south the Goleta Slough at a higher topographic elevation. As stated by the Central Coast Regional Water Quality Control Board, there is no groundwater for beneficial use in this area. 6. Government agency concurrence EHS determined that this Site meets the criteria for closure in accordance with the LTCP. The Public Comment period is an opportunity for the public to voice their concerns. The above action may be taken 60 days after the date of this notice unless significant comments or new information is presented regarding the property giving cause not to proceed. You are advised to contact the caseworker listed below regarding any reason(s) the action should not be taken. A record will be kept of those comments as well as a summary of that information. Any responses to public concerns received within the 60-day notice period will be provided within 30 days after the deadline. No response will be given to comments submitted after the deadline. Public comment may be submitted in writing, no later than (60 days) after receiving this notice. Please direct any comments to: Santa Barbara County Public Health Department Environmental Health Services Division, LUFT Program Attn: E. Steven Nailor 2125 S. Centerpointe Parkway, Suite #333 Santa Maria, CA,

5 SITE NAME: UCSB Former Bldg. 510, Facilities Management, Tank 10 SITE ADDRESS: UCSB, Building 510, Santa Barbara, CA SITE ID: The Santa Barbara County Public Health Department, Environmental Health Services Division (EHS) Leaking Underground Fuel Tank (LUFT) Program provides regulatory oversight for the cleanup of contamination released from underground storage tanks. The State Water Resource Control Board (SWRCB) has adopted policies that allow, in certain circumstances, the leaving-in-place of contamination at concentrations that have been determined not to pose a threat to human health or the environment. The Santa Barbara County Public Health Department EHS LUFT intends to close the investigation and cleanup of the above referenced property (Site) in accordance with the SWRCB s UST Low-Threat Closure Policy (LTCP). The LTCP requires a public notice to be mailed to adjacent parcel owners and tenants. This Site is undergoing a 60-day public comment period. The information on this form presents the conditions at the Site and is based on assessment/remediation activities completed to date. If you wish to obtain additional information, please go to the SWRCB s GeoTracker website at If you have further questions, contact Mr. E. Steven Nailor at the EHS LUFT at The Public Comment period is an opportunity for the public to voice their concerns. A record will be kept of those comments as well as a summary of that information. 1. Brief description of the release/source/extent including dates On August 17, 1988, one 550-gallon underground storage tank (UST) was removed from the Site and the tank pit was lined with plastic sheeting before being backfilled with soils excavated during the UST removal. A soil sample from the bottom of the tank pit had total petroleum hydrocarbons (TPH) at 1,086 milligrams per kilogram (mg/kg). Subsequently, the two historical pump locations for this UST were assessed in 1989 finding TPH= 2,200 ppm in a line sample, east of the former UST pit. The consultant recommended excavation and treatment (aeration) of any impacted soils. Former Building 510 was near Building 595, within the fenced Facilities Management Area. January 27, 1989, notes in file state: the pit looked clean except one area TP-10-1, recommendation to aerate the soil and collect confirmation samples from pit. On March 6, 1991, over excavation of approximately 396-cubic-yards of soil and eight confirmation soil samples were collected at various locations and submitted to a laboratory for analyses. The maximum confirmation sample results were TPH at 49 mg/kg, with no Benzene, Toluene, Ethylbenzene and Xylenes (BTEX), and no lead was detected. The impacted soil was moved for aeration; however, it was later transported and disposed at the BKK Landfill, and the excavation was backfilled with sand/gravel. Based on the data, this site meets the criteria for case closure. 1

6 SITE NAME: UCSB Former Bldg. 510, Facilities Management, Tank 10 SITE ADDRESS: UCSB, Building 510, Santa Barbara, CA SITE ID: Description of structural encumbrance, if applicable None, the former Building 510 has been removed. 3. Description of remedial actions Reportedly, 396 cubic yards of impacted soils were removed and disposed in Description of fate and transport Surface soil is underlain by the Miocene age marine Monterey Shale. The Monterey formation is known to have naturally occurring oil seeps and tars at the shallow soil interface. 5. Description of risk to water quality, public health and safety, and the environment The Site located south and outside of the Goleta Groundwater Basin and is south the Goleta Slough at a higher topographic elevation. As stated by the Central Coast Regional Water Quality Control Board, there is no groundwater for beneficial use in this area. 6. Government agency concurrence EHS determined that this Site meets the criteria for closure in accordance with the LTCP. The Public Comment period is an opportunity for the public to voice their concerns. The above action may be taken 60 days after the date of this notice unless significant comments or new information is presented regarding the property giving cause not to proceed. You are advised to contact the caseworker listed below regarding any reason(s) the action should not be taken. A record will be kept of those comments as well as a summary of that information. Any responses to public concerns received within the 60-day notice period will be provided within 30 days after the deadline. No response will be given to comments submitted after the deadline. Public comment may be submitted in writing, no later than (60 days) after receiving this notice. Please direct any comments to: Santa Barbara County Public Health Department Environmental Health Services Division, LUFT Program Attn: E. Steven Nailor 2125 S. Centerpointe Parkway, Suite #333 Santa Maria, CA,

7 SITE NAME: UCSB Bldg. 555, Marine Biotechnology Laboratory SITE ADDRESS: UCSB, Building #555, Santa Barbara, CA SITE ID: The Santa Barbara County Public Health Department, Environmental Health Services Division (EHS) Leaking Underground Fuel Tank (LUFT) Program provides regulatory oversight for the cleanup of contamination released from underground storage tanks. The State Water Resource Control Board (SWRCB) has adopted policies that allow, in certain circumstances, the leaving-in-place of contamination at concentrations that have been determined not to pose a threat to human health or the environment. The Santa Barbara County Public Health Department EHS LUFT intends to close the investigation and cleanup of the above referenced property (Site) in accordance with the SWRCB s UST Low-Threat Closure Policy (LTCP). The LTCP requires a public notice to be mailed to adjacent parcel owners and tenants. This Site is undergoing a 60-day public comment period. The information on this form presents the conditions at the Site, and is based on assessment/remediation activities completed to date. If you wish to obtain additional information, go to the SWRCB s GeoTracker website at If you have further questions, contact Mr. E. Steven Nailor at the EHS LUFT at The Public Comment period is an opportunity for the public to voice their concerns. A record will be kept of those comments as well as a summary of the information. 1. Brief description of the release/source/extent including dates. In February 2001, UCSB s contractor obtained a permit and removed one 550-gallon underground storage tank (UST) used to supply a diesel emergency generator for the Marine Biology live study sea-water tanks. The UST removal notes state the UST was in good condition with no apparent holes and it had to be dug out of tightly compacted shale. Following removal of the UST, approximately 35 cubic yards of pea gravel was excavated resulting in a pit approximately 10.5 feet (E-W) by 8 feet (N-S) to a depth of 12 feet below ground surface (bgs). The sides of the pit were cut into the bedrock and the UST had been anchored to a concrete deadman. Water was encountered within the pea gravel, and 1,600 to 2,100 gallons of water were removed from the pit. The water reportedly infiltrated the pit from equipment washing activities and does not appear to represent usable groundwater, as the UST pit was cut into the shale bedrock. Staff at the Central Coast Regional Water Quality Control Board (CC- RWQCB) concur that any groundwater at this Site is not a viable resource. A stain was noted around the sides of the pit from feet bgs, the source is believed to be from a broken vent line. The maximum impacts found for total petroleum hydrocarbons as diesel (TPHd) was 3,200 milligrams per kilogram (mg/kg) with no Benzene, Toluene, Ethylbenzene, and Xylenes (BTEX), or fuel oxygenates reported. Impacts were noted in the sandy gravel backfill in adjacent piping trenches that were also cut into the shale bedrock. These impacts were removed to the extent practicable. Additional assessment of the trenches was performed, and TPHd ranged from 449 mg/kg to 33 mg/kg in the backfill soils, and Methyl-tertiary Butyl Ether (MTBE) was detected at 2.7 micrograms per Liter (g/l) was found in water from the trench, but no volatile organic compounds or other gasoline oxygenate compounds were reported. 1

8 SITE NAME: UCSB Bldg. 555, Marine Biotechnology Laboratory SITE ADDRESS: UCSB, Building #555, Santa Barbara, CA SITE ID: The Site is located south of the Goleta Groundwater Basin and is underlain by thousands of feet of Miocene age and older Tertiary marine and non-marine sedimentary rocks. 2. Description of structural encumbrance, if applicable Additional excavation of the trench backfill material with TPHd at 449 is not warranted, as there is no threat to groundwater or human health. Additional excavation is not feasible due to building constraints. 3. Description of remedial actions Removal of 35 cubic yards of impacted pea gravel and 1,600-2,100 gallons of impacted water. 4. Description of fate and transport Surface soils are underlain by Miocene age marine Monterey Shale. This formation is known to have naturally occurring oil seeps and tars at the shallow soil interface. 5. Description of risk to water quality, public health and safety, and the environment As stated by the Central Coast Regional Water Quality Control Board, there is no groundwater for beneficial use in this area, adjacent to the shore cliffs. 6. Government agency concurrence EHS has determined this Site meets the criteria for closure in accordance with the LTCP. The Public Comment period is an opportunity for the public to voice their concerns. The above action may be taken 60 days after the date of this notice unless significant comments or new information is presented regarding the property giving cause not to proceed. You are advised to contact the caseworker listed below regarding any reason(s) the action should not be taken. A record will be kept of those comments as well as a summary of that information. Any responses to public concerns received within the 60-day notice period will be provided within 30 days after the deadline. No response will be given to comments submitted after the deadline. Public comment may be submitted in writing, no later than (60 days) after receiving this notice. Please direct any comments to: Santa Barbara County Public Health Department Environmental Health Services Division, LUFT Program Attn: E. Steven Nailor 2125 S. Centerpointe Parkway, Suite #333 Santa Maria, CA,

9 SITE NAME: UCSB Bldg. 577, Old Marine Science Laboratory, Tank No. 6 SITE ADDRESS: UCSB, Building #577, Santa Barbara, CA SITE ID: The Santa Barbara County Public Health Department, Environmental Health Services Division (EHS) Leaking Underground Fuel Tank (LUFT) Program provides regulatory oversight for the cleanup of contamination released from underground storage tanks. The State Water Resource Control Board (SWRCB) has adopted policies that allow, in certain circumstances, the leaving-in-place of contamination at concentrations that have been determined not to pose a threat to human health or the environment. The Santa Barbara County Public Health Department EHS LUFT intends to close the investigation and cleanup of the above referenced property (Site) in accordance with the SWRCB s UST Low-Threat Closure Policy (LTCP). The LTCP requires a public notice to be mailed to adjacent parcel owners and tenants. This Site is undergoing a 60-day public comment period. The information on this form presents the conditions at the site and is based on assessment/remediation activities completed to date. If you wish to obtain additional information, please go to the SWRCB s GeoTracker website at If you have further questions, contact Mr. E. Steven Nailor at the EHS LUFT at The Public Comment period is an opportunity for the public to voice their concerns. A record will be kept of those comments as well as a summary of that information. 1. Brief description of the release/source/extent including dates In June 1988 a 550 gallon diesel fuel underground storage tank (UST) was removed and associated soil contamination was found. In April 1991, a soil assessment found limited impacts at 15 feet below ground surface (bgs). In May 1997, additional assessment was performed by drilling and collecting soil samples from six soil borings. In June 1997 three additional borings were drilled and sampled to depths of 35 ft. bgs, and based on the data, the Site has been adequately delineated by the borings. An estimated volume of 390-cubic-yards of impacted soil remain in place between 5 and 20 feet bgs with concentrations of total petroleum hydrocarbons as diesel (TPHd) between 100 and 1,000 milligrams per kilogram (mg/kg). Soil at the Site are generally silty sand and fine sand to 7 or 8 feet bgs, that is underlain by the Miocene age marine Monterey Shale formation. When the UST was removed in 1988, an unknown volume of impacted soil was reportedly removed that apparently comprised the most impacted soil. Additional impacted soil may have been removed during the replacement/modifications to the former Building

10 SITE NAME: UCSB Bldg. 577, Old Marine Science Laboratory, Tank No. 6 SITE ADDRESS: UCSB, Building #577, Santa Barbara, CA SITE ID: Description of structural encumbrance, if applicable Reportedly, excavation of the impacted soils above 1,000 mg/kg occurred prior to redevelopment of the Site. Benzene, Toluene, Ethylbenzene and Xylenes (BTEX) were not detected at the Site. 3. Description of remedial actions Previous excavation efforts removed a majority of the impacted soils that were above 1,000 mg/kg. 4. Description of fate and transport The Monterey Shale underlying the Site is known to have naturally occurring oil seeps and tars at the shallow soil interface. 5. Description of risk to water quality, public health and safety, and the environment As stated by the Central Coast Regional Water Quality Control Board, there is no groundwater for beneficial use in this area, adjacent to the shore cliffs. 6. Government agency concurrence EHS determined the Site meets the criteria for closure in accordance with the LTCP. The Public Comment period is an opportunity for the public to voice their concerns. The above action may be taken 60 days after the date of this notice unless significant comments or new information is presented regarding the property giving cause not to proceed. You are advised to contact the caseworker listed below regarding any reason(s) the action should not be taken. A record will be kept of those comments as well as a summary of that information. Any responses to public concerns received within the 60-day notice period will be provided within 30 days after the deadline. No response will be given to comments submitted after the deadline. Public comment may be submitted in writing, no later than (60 days) after receiving this notice. Please direct any comments to: Santa Barbara County Public Health Department Environmental Health Services Division, LUFT Program Attn: E. Steven Nailor 2125 S. Centerpointe Parkway, Suite #333 Santa Maria, CA,