South Coast Botanic Garden

The South Coast Botanic Garden is an 87 acres (35 ha) botanical garden in the Palos Verdes Hills, in an unincorporated area of Los Angeles County, California, United States, about 10 miles (16 km) south of Los Angeles International Airport.

The site was operated as an open pit mine from 1929 until 1956, producing over one million tons of crude diatomite.

[3] The Sanitation District in cooperation with other County agencies carried out initial planning, grading and contouring.

[1] Second, because of the diverse nature and thickness of the fill, settling rates vary throughout the garden resulting in frequent irrigation system breakage.

Third, heat is caused by decomposition of organic matter below the soil surface, and it is accompanied by the production of gases, primarily carbon dioxide and methane.