Regional footprint ES Engineering Services operates across California with offices in Orange, Ventura County, and a Northern California presence in the Central Valley, presenting cross-region expansion and multi-site project opportunities for larger environmental remediation and compliance programs.

Small to mid market With 11-50 employees and a focus on cost-effective, client-accessible environmental solutions, target mid-market commercial and public agency accounts that require personalized service, flexible budgeting, and regulator liaison without the overhead of large firms.

Regulatory expertise The company emphasizes regulatory compliance, liability assessment, and negotiation of conservative, money-saving remediation alternatives, signaling upsell potential in complex permitting, agency negotiation, and site-specific exemption strategies.

Water and waste focus Core strengths in petroleum remediation, water and wastewater engineering, landfill monitoring, and storm water management create upsell avenues with industries facing stringent environmental controls, such as manufacturing, utilities, and transportation sectors.

Strategic partnerships Recent news around industry collaborations and acquisitions in the Montrose ecosystem, along with leadership appointments, indicate opportunities to position ES as a preferred partner for integrated environmental solutions within larger client programs and alliance initiatives.