coastal area comprise the sole known mineral resources. The city has several distinct districts, such as New Monterey, Del Monte, and Cannery Row. Local soil is Quaternary Alluvium. Common soil series include the Baywood fine sand on the east side, Narlon loamy sand on the west side, Sheridan coarse sandy loam on hilly terrain, and the pale Tangair sand on hills supporting closed-cone pine habitat. The city is in a moderate to high seismic risk zone, the principal threat being the active San Andreas Fault approximately to the east. The Monterey Bay fault, which tracks to the north, is also active, as is the Palo Colorado fault to the south. Also nearby, minor but potentially active, are the Berwick Canyon, Seaside, Tularcitos and Chupines faults. Monterey Bay's maximum credible tsunami for a 100-year interval has been calculated as a wave high. The considerable undeveloped area in the northwest part of the city has a high potential for landslides and erosion. The city is adjacent to the Monterey Bay National Marine Sanctuary, a federally protected ocean area extending along the coast. Sometimes this sanctuary is confused with the local bay which is also termed Monterey Bay. Soquel Canyon State Marine Conservation Area, Portuguese Ledge State Marine Conservation Area, Pacific Grove Marine Gardens State Marine Conservation Area, Lovers Point State Marine Reserve, Edward F. Ricketts State Marine Conservation Area and Asilomar State Marine Reserve are marine protected areas established by the state of California in Monterey Bay. Like underwater parks, these marine protected areas help conserve ocean wildlife and marine ecosystems. The California sea otter, a threatened subspecies, inhabits the local Monterey Bay marine environment, and a field station of The Marine Mammal Center is located in Monterey to support sea rescue operations in this section of the California coast. The rare San Joaquin kit fox is found in Monterey's oak-forest and chaparral habitats. The chaparral, found mainly on the city's drier eastern slopes, hosts such plants as manzanita, chamise and ceanothus. Additional species of interest (that is, potential candidates for endangered species status) are the Salinas kangaroo rat and the silver-sided legless lizard. There is a variety of natural habitat in Monterey: littoral zone and sand dunes; closed-cone pine forest; and Monterey Cypress. There are no dairy farms in the city of Monterey; the semi-hard cheese known as Monterey Jack originated in nearby Carmel Valley, California, and is named after businessman