Mountains Restoration Trust accepts mitigation credits from agencies like United States Army Corp Engineers, California Fish and Wildlife, Regional Water Quality Control Board, Los Angeles County, California Coastal Commission and local municipalities. These mitigation credits fund many of our restoration projects and preservation acquisitions across the Santa Monica Mountains.

We are aware that all mitigation is not created equal and have policies in place to thoroughly review mitigation credits with our Board of Directors, senior staff and general public before their acceptance.

After passing a general selection criteria and pre-approval review from our board, potential mitigation credits are posted here for a minimum of 28 days. If you have objections, comments or questions to any potential mitigation credits posted, please email Our board and staff will read your objections, comments and questions before final acceptance or rejection of the proposed mitigation credits.

LAWA Argo Ditch Maintenance Mitigation

Posted for Public Review on: September 19, 2019

Mitigating for: Los Angeles World Airports (LAWA)

Mitigation Program Agency: California Department of Fish and Wildlife (CDFW)

Mitigation Requirements from MRT: Los Angeles World Airports entered into Streambed Alteration Agreement #166-2016-0248-R5 with CDFW on March 7, 2018. The agreement requires compensatory offsite mitigation to address impacts associated with clearance of vegetation in Argo Ditch, a manmade drainage structures which runs parallel to the LAX runway. Growth of vegetation within the channel attracts birds which pose a risk to runway safety. The impact permit authorizes annual clearance of the vegetation to increase runway safety and reduce bird mortality.

Mountains Restoration Trust plans to provide compensatory mitigation through the acquisition of a 30-acre property (APN’s: XX) located northeast of Old Topanga Canyon Road. The property contains 4.4 acres of potential CDFW-jurisdictional streambed, banks, and riparian buffer. The property was last burned in the “Woodland Hills #65” fire of 1944, and features one of the oldest growth chaparral, walnut, and sycamore woodland habitats in the Santa Monica Mountains. Acquisition of the property will preserve in perpetuity these valuable ecological resources.