Summary
RJ Noble wants its long-standing Temescal Valley asphalt plant reclassified as heavy industrial so it can operate separately from the adjacent aggregate mine and add maintenance buildings and a recycled-asphalt operation. Residents say the plant already doubled production to 1.2 million tons a year without proper review and want answers on permits, traffic and dust before anything moves forward.
At a glance
- Total mentions
- 3
- Last 30 days
- 0
Discussed at 2 meetings in the last 60 days; most recently Sep 23, 2026.
Impact analysis
The company says the plant supplies asphalt for local highway projects and provides high-wage union jobs, but exact county revenue figures weren't given.
RJ Noble, Martin Marietta and the roughly 200 contractors, plus county Public Works and Caltrans, that use the plant's asphalt.
Temescal Valley residents concerned about dust, truck traffic on Maitri Road, and industrial uses edging closer to new housing.
Mentions & discussions (3)
Riverside County Planning Commission - Regular Meeting — September 23, 2026
Converting the last commercially designated land near Lawson Road to 85 homes reignited a familiar Temescal Valley fight: residents want grocery stores and services, not more rooftops, and say I-15 and Temescal Canyon Road are already gridlocked. The project brings a traffic signal and road widening as conditions.
Board of Supervisors - Regular Meeting — September 15, 2026
RJ Noble wants its Temescal Canyon quarry and asphalt plant land reclassified for heavy industrial use so the existing plant can be permitted standalone. Neighbors cite nighttime operations, truck traffic, dust, and a contested 2019 permit expansion. The Board approved only the initiation — full review comes later.
Riverside County Planning Commission - Regular Meeting — March 18, 2026
RJ Noble wants its long-standing Temescal Valley asphalt plant reclassified as heavy industrial so it can operate separately from the adjacent aggregate mine and add maintenance buildings and a recycled-asphalt operation. Residents say the plant already doubled production to 1.2 million tons a year without proper review and want answers on permits, traffic and dust before anything moves forward.
Related development
Foundation Component General Plan Amendment No. 240053 (GPA240053)
Current five-acre zoning remains; the applicant cannot reapply until the next general plan cycle.
Warmington Residential – 85 single-family homes (GPA250004, CZ2500010, TTM39146, PPA260007)
Adds 85 homes and a signalized intersection to a congested corridor; removes a commercial-designated site from future retail use.
Foundation Component General Plan Amendment No. 240062 (GPA240062)
Would let the decades-old asphalt plant operate independently of the mine it was tied to, with a truck shop and recycled-asphalt facility planned — but full environmental review and community scrutiny are still ahead.
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