Conerstone Manufacturing INC
725 N Twin Oaks Valley Rd, San Marcos, CA 92069
Present in a source dataset, with no recent operating signal.
What they make
Fluid Power Cylinder and Actuator Manufacturing333995Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Tlr & Son Hydraulics, INC. | San Marcos | Machine Shops 332710 | ACTIVE | 0.0 KM |
| Accu-seal Sencorpwhite, INC. | San Marcos | Packaging Machinery Manufacturing 333993 | REPORTED CLOSED | 2.2 KM |
| Ccc Wash | San Marcos | Machine Shops 332710 | ACTIVE | 2.6 KM |
| Win Column LLC | San Marcos | Air and Gas Compressor Manufacturing 333912 | ACTIVE | 3.1 KM |
| Integrated Cryogenic Solutions, LLC | Escondido | Oil and Gas Field Machinery and Equipment Manufacturing 333132 | ACTIVE | 4.3 KM |
Also at this address
More than one federal record exists for this street address. The primary record for the site is listed first.
Where this record comes from
1 source holds 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 RCRAINFO · EPA site type STATIONARY.
- EPA Facility Registry ServiceEXISTENCERecord 110072011012 · first seen SEP 2025 · last seen SEP 2025
IN SAN DIEGO COUNTY125 other plants share this one’s industry (Other General Purpose Machinery Manufacturing, NAICS 3339); 22 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: CONERSTONE MANUFACTURING INC · OCT 2026
- Street address
- EPA: 725 N TWIN OAKS VALLEY RD · OCT 2026
- City
- EPA: SAN MARCOS · OCT 2026
- State
- EPA: CA · OCT 2026
- County (FIPS code)
- EPA: 06073 · OCT 2026
- Coordinates
- EPA: 33.151427,-117.161697 · OCT 2026
- Hazardous waste generator (RCRA)
- EPA ECHO: none · OCT 2026