Cementpro
3929 E Guasti Rd Unit C, Ontario, CA 91761
Present in a source dataset, with no recent operating signal.
What they make
All Other Miscellaneous Nonmetallic Mineral Product Manufacturing327999Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Canam Minerals INC | Rancho Cucamonga | Abrasive Product Manufacturing 327910 | REPORTED CLOSED | 3.8 KM |
| Tervita LLC | Rancho Cucamonga | Ground or Treated Mineral and Earth Manufacturing 327992 | UNVERIFIED | 5.0 KM |
| Jensen Precast | Fontana | Concrete Pipe Manufacturing 327332 | LIKELY ACTIVE | 6.6 KM |
| Oldcastle Precast | Fontana | Concrete Block and Brick Manufacturing 327331 | LIKELY ACTIVE | 8.4 KM |
| Holliday Rock Co., INC | Upland | Asphalt Paving Mixture and Block Manufacturing 324121 | LIKELY ACTIVE | 10.6 KM |
Also at this address
No other federal record shares this street address.
Where this record comes from
2 sources hold this plant, and 7 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.
EPA cross-references this facility in NPDES, RCRAINFO · EPA site type STATIONARY.
- EPA ECHO compliance recordsOPERATINGfirst seen DEC 2022 · last seen DEC 2022
- EPA Facility Registry ServiceEXISTENCERecord 110070096890 · first seen AUG 2017 · last seen AUG 2017
IN SAN BERNARDINO COUNTY57 other plants share this one’s industry (Other Nonmetallic Mineral Product Manufacturing, NAICS 3279); 4 of them have a size band on record.
What each source says
Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.
- Name
- EPA: CEMENTPRO · OCT 2026
- Street address
- EPA: 3929 E GUASTI RD UNIT C · OCT 2026
- City
- EPA: ONTARIO · OCT 2026
- State
- EPA: CA · OCT 2026
- County (FIPS code)
- EPA: 06071 · OCT 2026
- Coordinates
- EPA: 34.063916,-117.566379 · OCT 2026
- Hazardous waste generator (RCRA)
- EPA ECHO: none · OCT 2026
