|KETTLEMAN HILLS LDFL HIGHWAY 41|
|KETTLEMAN CITY, CA 932100000|
|FACILITY TYPE: HIST PERMITTED |
|PROGRAM TYPE: HAZARDOUS WASTE FACILITY ||
||- PERMITTED ACTIVITIES: LANDFILL, SURFACE IMPOUNDMENT-DISPOSAL, CONTAINER, TANK TREATMENT, OTHER TREATMENT
Updated March 8, 2010
OTHER LINKS CONTAINING FACILITY INFORMATION
DTSC Hazardous Waste Management Project Documents:
DTSC EnviroStor Profile for Corrective Action:
DTSC EnviroStor Profile for the Operating Permit:
DTSC EnviroStor Profile for the Operating Permit, Hazardous Waste Facility Permit (including the Part B/Operation Plan):
Using link above, click the "Activities" tab, and click "Final Permit Effective" dated 6/16/2003.
DTSC EnviroStor Profile for the Operating Permit, Class 3 Permit Modification Application (and Engineering and Design Report) and Subsequent Environmental Impact Report for the expansion of Landfill B-18:
Using link above, click the "Community Involvement" tab, and see the documents under the section "Project Related Documents".
BASIC FACILITY INFORMATION
Chemical Waste Management, Inc, Kettleman Hills Facility (CWM) is a commercial hazardous waste treatment, storage and disposal facility with a Hazardous Waste Facility Permit (HWFP), renewed on June 16, 2003, from the State of California Department of Toxic Substances Control (DTSC). CWM is one of three operating hazardous waste disposal facilities in California, and the only one in California that allows polychlorinated biphenyl (PCB) disposal under a Toxic Substances Control Act (TSCA) Permit from the United States Environmental Protection Agency (USEPA).
CWM is located in Kings County, 6.5 miles southeast of Avenal and 3.5 miles southwest of Kettleman City. Hazardous waste is transported to the facility by truck via Interstate 5 and State Route 41. The Facility entrance is located on State Route 41, located aproximately 2.6 miles west of Interstate 5. The Facility is 3.5 southwest of Kettleman City, also located on SR-41.
CWM is approximately 1,600 contiguous acres with 695 acres permitted (under the Conditional Use Permit) for activity related to Class I (hazardous) waste, TSCA PCBs, and Class II/III (non-hazardous) waste.
CWM accepts virtually all solid, semi-solid, and liquid hazardous and extremely hazardous wastes. It may not accept class A explosives, compressed gases, radioactive materials, biological agents, or infectious wastes.
The facility conducts the following activities: solar evaporation in surface impoundments; disposal into hazardous waste landfills; PCB draining and flushing; PCB disposal and storage; and stabilization, solidification and storage of bulk and drummed wastes.
Under DTSC’s HWFP, CWM is required to conduct a Groundwater Monitoring Program and Ambient Air Monitoring Program. The development of a Health Risk Assessment was required in the HWFP for the Ambient Air Monitoring Program.
Active/Operating Hazardous Waste Permitted Units
• Drum Storage Unit: Storage in containers.
• PCB Flushing/Storage Unit: Transfer/Storage of liquid PCB wastes from bulk containers to the 10,000 gallon storage tank, or to DOT-approved metal drums for eventual off-site treatment/disposal.
• Bulk Storage Units 1 and 2: Temporary storage of stabilized/unstabilized waste prior to land disposal, treatment, or shipment offsite.
• Final Stabilization Unit: Processing of various solid, semi-solid, and selected liquid wastes not suitable for direct landfilling, solar evaporation, or other management method employed at the Facility, by mixing with stabilization reagents.
• Surface Impoundments P-9, P-14, and P-16: Treatment by solar evaporation.
• Landfill units B-18: Land disposal.
Environmental monitoring at the Facility includes monitoring of ambient air, groundwater (including surface water), and the unsaturated (vadose) zone.
The ambient air monitoring program was developed in compliance with permit conditions in DTSC’s hazardous waste facility permit and California Code of Regulations, Title 22, Section 66264.700, et seq. The program is designed to protect human health and the environment, assess releases of volatile organic compounds, semi-volatile compounds, metals, and particulates. Historic waste profiles and the Facility’s 1994 Emission Characterization Study were used to establish the list of chemicals of concern. There are 4 monitoring locations near the facility property line: 2 fixed locations downwind: south-southeast, and east, 1 fixed location upwind: north-northwest, and 1 mobile station for quality assurance and quality control. Samples are taken in a 24-hour period every 12-days coinciding with California Air Resources Board’s schedule. Meteorological data is continuously collected.
The Facility shall comply with the groundwater monitoring requirements of California Code of Regulations, Title 22, Section 66294.90 et seq., and the Waste Discharge Requirements Order Number 98-058, and any groundwater monitoring provision in subsequent Waste Discharge Requirements (WDRs), issued by the Central Valley Regional Water Quality Control Board.
The groundwater monitoring system is designed to monitor the 13 major sandstone beds, and the groundwater monitoring well network consists of 67 wells. Currently, 46 of the wells are sampled as part of Detection Monitoring (25 wells), Evaluation Monitoring (13 wells), and Corrective Action Monitoring (8 wells) Programs. An additional 21 wells are used for depth to groundwater measurements to assist in determining groundwater gradients.
The facility submits quarterly groundwater monitoring reports that provide details on the groundwater flow rates and status of the corrective action areas.
The WDRs are uploaded in DTSC's EnviroStor under the "Community Involvement" tab, and at this direct link:
Quarterly groundwater monitoring reports are uploaded to the State Water Resources Control Board's GeoTracker database, by going to the following link and then going to the "Site Maps/Documents" tab:
There are two corrective action areas being monitored:
• Mounded impacted groundwater due to releases from 2 formerly unlined, permitted ponds.
• Primary contaminants identified are chlorinated and aromatic volatile organic compounds (VOCs) (specifically 1,1-dichloroethane, chlorobenzene, chloroform, trichloroethene, and benzene)
• Pumping for hydraulic containment since late 1990’s.
• In 2004/2005, pumping discontinued for two years to monitor groundwater elevation and concentration rebounds.
• To date, there have been no significant rebounds of groundwater elevations or VOC concentrations.
• Regulatory agencies have agreed to continue monitoring without pumping.
SURFACE WATER MONITORING
Surface water bodies (e.g., lakes, streams, springs) that could be affected by a release from the unit are monitored. The program mimics groundwater monitoring. Surface water run-off is controlled by facility design and is generally monitored through storm water permits issued by the Regional Water Quality Control Boards.
SOIL-PORE GAS / UNSATURATED ZONE MONITORING
The monitoring goal of the system is similar to the groundwater system, which is to monitor the water bearing zone (WBZ) sands which group out beneath waste units and which provide a downdip pathway for liquid or gas releases. Both the active soil gas wells and the moisture probes target the entire thickness of the target WBZ sands, with the paired soil gas probes being screened across the full thickness of the sands.
PROPOSED EXPANSION PROJECT
CWM’s currently permitted and operating hazardous waste disposal unit, Landfill B-18, is 53 acres with a capacity of 10.7 million cubic yards. CWM’s expansion project includes a proposal to laterally expand the footprint of Landfill B-18 by 14 acres, allowing an additional 4.9 million cubic yards of capacity and about 8-9 years of operation. In addition, DTSC anticipates CWM proposal to construct and operate a new 63-acre hazardous waste disposal unit, Landfill B-20. The new unit would have a capacity of 14.2 million cubic yards and 24 years of operation.
CWM submitted a Class 3 permit modification to DTSC on December 12, 2008 for the expansion of Landfill B-18. If Landfill B-18 is permitted by DTSC, CWM will request a separate Class 3 permit modification from DTSC in the future for Landfill B-20.
For the Class 3 permit modification for Landfill B-18, there was a 60-day facility-held public comment period with a public meeting for the permit request. The request was public noticed by the facility on December 18, 2008, and re-noticed on January 12, 2009 with a comment period from January 12, 2009 to March 13, 2009 and a public meeting on February 10, 2009.
On March 5, 2009, DTSC granted a temporary authorization (TA), requested on October 10, 2008, for Landfill B-18, to amend the bench design to accommodate an increased rain storm event (handle increased precipitation). This design element is also included in the expansion project. The TA was appealed on April 17, 2009 by Greenaction for Health and Environmental Justice and stayed on April 24, 2009. DTSC denied the petition for review and vacated the stay on May 19, 2009.
The Class 3 Permit Modification Application (and Engineering and Design Report) and Subsequent Environmental Impact Report for the expansion of Landfill B-18 is uploaded under the "Community Involvement" tab, under "Project Related Documents" in DTSC’s HWMP EnviroStor database.