Rancho Cucamonga

The city of Rancho Cucamonga, California

Where are the Native American Ruins and Artifacts in Alta Loma?

In Wikipedia it says that there are or were Native American Indian artifacts and ruins in Alta Loma. It says some were destroyed in the big fire of 2003, and that some of the ruins are on land that is owned by Paul Biane.

I know that some time in the past some or all of the Indians lived around what is now Red Hill, but where are the native American ruins mentioned? The 2003 fire did not burn down to Red Hill and stayed north of Hillside, so where are they?