Division Offices

HALSCA operates as a central archival repository and coordinates with authorized Technical Custodians across the state of California.

Documentation Registry

For submitting CAD drawings, large-format photography, and historical narratives for state review.
registry@halsca.org

Field Operations & Custodians

For inquiries regarding Technical Custodian protocols, WDO mitigations, and site-specific arboricultural interventions.
fieldops@halsca.org

Public Affairs & Advocacy

For press inquiries, CEQA coordination, and local historical society partnerships.
advocacy@halsca.org

*Please note: Due to the sensitive nature of active archaeological and botanical sites, the physical addresses of our field data centers are not published publicly to prevent unauthorized foraging and site disturbance.

Direct Inquiry