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The purpose of the UST program is to ensure that hazardous materials stored in underground tanks are not released into the environment.The Hazardous Materials Surveillance Section of the…

RANCHO SANTA MARGARITA, Calif. (Jan. 28th, 2026): The Orange County Sheriff’s Department will be conducting a DUI/Driver’s License Checkpoint on Friday, January 30th, from 6 p.m. to 2 a.m. at an…

Join us for a strenuous, extremely challenging, fast-paced, early morning cardio hike in Limestone Canyon, part of OC Parks’ Irvine Ranch Open Space. Along the way we’ll be rewarded with panoramic…

Join us for a slow-paced hike through Limestone Canyon Nature Preserve. Slowing our pace will encourage us to experience the land with all of our senses. If you enjoy recording your sightings of…

Join us every Wednesday night in OC Parks’ Irvine Ranch Open Space for a fitness-focused hike on the paved Hicks Haul Road. During the spring, summer and fall, hikers will enjoy wonderful sunset…

This week in OC Parks’ Irvine Ranch Open Space, we’ll hike in Baker Canyon. This scenic hike includes steep climbs and descents on both single and double-track trails with about 1100 feet of…

Spend your morning helping to remove weeds and rebuild berms within the butterfly habitat islands in Limestone. With your help we will be able to maintain “islands” of host and nectar plants for…

Enjoy nature with friends and family on the Mesa. We start our program by climbing a small hill at an easy pace to reach the top. Once up on the mesa, we will hike along a fairly flat trail as we…

Escape into the stunning landscapes of the Irvine Ranch Natural Landmarks with a one of kind family hiking experience. Our docent-led family walk features tales of the land and miniature donkeys that…