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{{Infobox mountain range
| map_image=
| map_size= 275▼
| photo_size= 275
|
| other_name=Potrero Ridge, Point Molate Hills▼
| country= United States▼
| subdivision2_type= Region
| subdivision2= Point Molate, [[Richmond, California]]
| parent= [[Berkeley Hills]]▼
| orogeny=
| highest=Un<nowiki>named</nowiki>
| elevation_ft= 494
| range_coordinates= {{coord|37.95127|N|122.40928|W|type:mountain_scale:300000|format=dms|display=inline,title}}
| coordinates=
}}
The '''Potrero Hills'''
▲|map_size=275
▲|image=Richmond California.JPG
▲|image_caption=The Potrero Hills is the hills forming the western shore to the left and right of the [[Richmond-San Rafael Bridge|bridge]].
▲|other_name=Potrero Ridge, Point Molate Hills
▲|country=United States
▲|parent=[[Berkeley Hills]]
▲|geology=[[shale]], [[sandstone]], [[chert]]|geology1=
▲|period=Precambrian|period1=Cretaceous |orogeny=
▲The '''Potrero Hills'''<ref name="ptmolate">[http://www.pointmolateeis-eir.com/documents/draft_eis-eir/files/compiled/Volume_I.pdf Point Molate Casino EIR, Volume I, 2009, accessed May 25, 2010]</ref> also known as the '''Potrero Ridge''' and '''Point Molate Hills''' is a chaparral and forested [[escarpment]] of that crests northwest to southeast along the [[San Pablo Peninsula]] in [[Richmond, California]].<ref name="ptmolate"/><ref name="casino">[http://www.ci.richmond.ca.us/index.aspx?NID=1863 Point Molate Resort and Casino], city of Richmond website, May 25, 2010</ref>
==History==
The steep hills crest from [[Point Richmond]] in the south to [[Point San Pablo]] in the north. They were formed by pressure created by the [[San Pablo Fault]] a sub-fault of the [[Hayward Fault]].<ref name="ptmolate"/> Part of the hills once were cultivated as a vineyard for the [[Winehaven, California|Winehaven Winery]], world's largest winery at the time. The range hosts two peaks the largest is a 494-feet (151 m) and the second largest a 328 feet (100 m) peak, both are unnamed.<ref name="ptmolate"/> The hills once formed the backbone of an island the existed off the coast of what is now central Richmond and has been landfilled, similar to [[Alameda, California|Alameda]]'s [[Bay Farm Island]]. The hills are made of [[shale]], [[sandstone]], and [[chert]].<ref name="ptmolate"/>
==Industry==
The hills provide a natural barrier protecting the Point Molate area from [[ammonia]] and other contaminants that could be released from the [[Chevron Richmond Refinery]] in the event of a disaster.<ref name="ptmolate"/> A pass is carved into it at its southern end for [[Interstate 580 (California)|Interstate 580]]. Some of the ridge was also formerly used for goat grazing and quarrying at the Blake Brothers Quarry. A weather station sits atop a peak overlooking [[Point San Pablo]]. [[Point Potrero Pond]] is a small lake near the [[
==Notes==
Line 39 ⟶ 31:
==External links==
{{Portal|San Francisco Bay Area}}▼
*[
{{Commons category|position=left|Potrero Hills (Richmond, California)}}▼
▲{{Portal|San Francisco Bay Area}}
▲{{Commons category|Potrero Hills (Richmond, California)}}
{{Richmond, California}}
{{East Bay}}
[[Category:Richmond, California]]▼
[[Category:Mountain ranges of Contra Costa County, California]]
[[Category:Geography of Richmond, California]]
[[Category:San Pablo Bay]]
[[Category:Mountain ranges of the San Francisco Bay Area]]
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