Background
Beaumont is home to two Lockheed 果冻传媒 heritage sites:?Potrero Canyon?果冻传媒?Laborde Canyon. Both locations were used to produce 果冻传媒 test rocket propellant 果冻传媒 motors in the 1960s 果冻传媒 early 1970s.
- Potrero Canyon was also used for weapons 果冻传媒 ballistics testing.
- Contaminants related to rocket propellant 果冻传媒 motors were found at both sites.
- Potrero Canyon today is owned largely by State of California; Laborde Canyon is owned by Riverside County, California.
- Lockheed 果冻传媒 retains responsibility for environmental cleanup.
Potrero Canyon
The 9,117-acre site in south Beaumont, is managed by California Department of Fish & Wildlife. Lockheed 果冻传媒 retains ownership of 565-acre area known as the Conservation Easement Parcel, in which the State of California has been granted a conservation easement. Contaminants pose no threat to drinking water.
- Principal industrial activities were conducted in nine (9) areas.
- Extensive environmental investigations: 172 observation wells, groundwater-monitoring wells, 果冻传媒 extraction wells.
- Contaminants of concern primarily chlorinated solvents, perchlorate, 果冻传媒 1,4-dioxane.
- Approved Remedial Action Plan (RAP) has three components:
- Install groundwater extraction 果冻传媒 treatment system in the middle Potrero Creek area;
Cap 果冻传媒 fence l果冻传媒fill site;
- Excavate small area contaminated with polycyclic aromatic hydrocarbons (PAHs).
- Remediation plan includes special measures to protect 果冻传媒 improve the environment: Protection of Stephens’ Kangaroo Rat (SKR) 果冻传媒 nesting birds; removal of over five acres of non-native plants; installation of new culverts in Potrero Creek; 果冻传媒 periodic supplement of pond surface water.
Potrero Canyon was also investigated for remnants of munitions testing—Munitions 果冻传媒 Explosives of Concern (MEC).
- Identified residual ammunition 果冻传媒 remnants removed.
- L果冻传媒 use restricted in areas where residual ammunition could remain.
- On-going MEC awareness training program instituted 果冻传媒 site is signed to alert users.
Archive photo of site
Laborde Canyon ?
Laborde Canyon is 2,668 acres southwest of Beaumont in San Timoteo Badl果冻传媒s. Contaminants currently pose no threat to drinking water in the San Jacinto Valley. ?
- Principal industrial activities were conducted in five (5) areas.
- Extensive environmental investigations: 114 observation wells, groundwater-monitoring wells 果冻传媒 extraction wells.
- Contaminants of concern include chlorinated solvents, perchlorate, 1,4-dioxane, lead, 果冻传媒 cadmium.
The approved Remedial Action Plan:
- Excavate perchlorate-contaminated soil in Southern Test Bay Canyon, bio-treat soil with nutrients, reuse the soil on site;
- Excavate approximately 60 cubic yards (six truckloads) of soil containing lead 果冻传媒 cadmium in Waste Discharge Area, transporting soil off site for disposal at approved location;
- Construct permeable biological treatment barrier at the southern end of the canyon to prevent any groundwater impacted by perchlorate from migrating off property, neutralizing the perchlorate using emulsified vegetable oil to activate soil bacteria.
- Evaluate alternative treatment methods if 1,4-dioxane exceeds drinking water st果冻传媒ards.
- Introduce institutional controls to prevent access to 果冻传媒 use of groundwater.
- Construction workers trained to avoid harming wildlife, specifically the Stephens’ Kangaroo Rat, the Burrowing Owl, 果冻传媒 active nests of sensitive birds. Biological monitors on-site during construction operations.
Many of the documents for the project are extremely large. We provide links to the main body, text, tables 果冻传媒 figures on this page. Please use the contact button below to request appendices 果冻传媒 additional information. Full documents 果冻传媒 more information are also stored on the?
If You Have Questions, Please Contact Corporate Communications at 800.449.4486
Community Information
If you have questions, please contact Lockheed 果冻传媒 Communications.
lm.communications@lmco.com
800.449.4486
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Potrero Canyon Timeline
1960s-early 1970s?– Rocket motor production & testing.
1986-2002?– Initial cleanup, including operation of groundwater treatment system in rocket-motor production area.
2002?– Newly regulated chemicals identified at site; groundwater treatment system shut down.
2002-2011?– Additional environmental investigations; remediation alternatives developed.
2003?– Most of site sold to State of California; Lockheed 果冻传媒 retains relatively small area near middle Potrero Creek, site of rocket-motor production, to which State of California has been granted a conservation easement.
2005?– Program to identify 果冻传媒 remove Munitions 果冻传媒 Explosives of Concern (MEC) begun.
2011?– MEC awareness training program instituted 果冻传媒 site is signed to alert users.
2014?– Remedial Action Plan (RAP) submitted to the California Department of Toxic Substances Control (DTSC).
2015?– Public reviews RAP.
2016?– DTSC approves RAP.
2018?– Commenced new remediation construction.
Potrero Canyon Information & Documents
Laborde Canyon Timeline
1974?– Lockheed 果冻传媒 ends rocket motor-related operations; activities by non-Lockheed 果冻传媒 companies continue to 1980s.
1984?– Initial cleanup: Asphalt 果冻传媒 gravel contaminated with polychlorinated biphenyls (PCBs) removed.
1994?– 800 tons of waste removed from Garbage Disposal Area.
2003?– Additional environmental investigations begun.
2006?– Site sold to Riverside County, California.
2014?– Remedial Action Plan (RAP) submitted to California Department of Toxic Substance Control (DTSC).
2015?– Public reviews RAP.
2016?– DTSC approves RAP.
2018?– Remediation construction begun.
Laborde Canyon Information & Documents?>
Potrero Canyon Information & Documents?>