Responsible Land Use
Responsible Land Use
Maps
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Global Hot Spots of Biodiversity Map
on September 5, 2020
"Biodiversity hotspots are regions that are both biologically fertile (rich distribution of plants and animals) and highly threatened. In other words, such biogeographic regions are very productive and are constantly exposed to threats of destruction which warrant the need for them to be protected." ...Read More
LA County Significant Ecological Area 15
on September 5, 2020
Los Angeles County has 28 Significant Ecological Areas. One of which is in Diamond Bar. The majority of Industry's holdings in Middle and Lower Tonner Canyon, as well as Aera's holdings are in SEA 15.
Close Up Map of how Tres Hermanos is Divided between counties.
on September 5, 2020
THR is divided this way because because the property is split between counties. So it is partially in Diamond Bar in Los Angeles County and Chino Hills in San Bernardino County.
Diamond Bar's Previous General Plan Land Use Designations
on September 5, 2020
Notice that most of Tres Hermanos's portion is designated as a "Planning Area." Planning areas are designed to aid in development--not preservation. Notice that a portion of it is also designated for high density housing. Here's a question. Where will Diamond Bar place its required housing units for the upcoming housing element update?
Diamond Bar's 2019 General Plan Update's Land Use Designations
on September 5, 2020
Notice that most of Tres Hermanos's portion is still designated as a "Planning Area." Also notice that Diamond Bar's Summitridge Trail area, circled, has now been designated as open space instead of a planning area. This is progress. Based upon citizen feedback, the Planning Commission recommended that theTHR portion be designated as open space, but the City Council refused.
Diamond Bar's Current Zoning Map.
on September 5, 2020
Notice that Tres Hermanos is zoned as agricultural. Here's a question. Where will Diamond Bar place its required housing units for the upcoming housing element update?
But also notice that the Summitridge Trail area is still zoned for housing. Yet the General Plan claims that a deed restriction will save it in perpetuity. If that is the case, why is it zoned for housing?
Chino Hills' General Plan Land Use Designations
on September 5, 2020
Notice how the Tres Hermanos area, while mostly zoned for ranches, also has commercial, mixed use and very high density housing planned along Grand Avenue.
Chino Hills' Zoning Map.
on September 5, 2020
At least the Chino Hills area of Tres Hermanos is zoned consistent with their General Plan. However, if we think Grand Ave is crowded now, just imagine how impassable Grand will be once all their planned development has been built.
Diamond Bar's Terrain Map.
on September 5, 2020
Notice how most of Diamond Bar is comprised of hilly slopes of over 30 percent. The vast majority of undeveloped land in Diamond Bar has similar slope percentages, is geologically unstable, prone to landslides, is in fire prone areas, and is ecologically necessary for our health and well being. We can also see here that the Chino Hills' portion of THR is also mostly comprised of slopes of over 30 percent.
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