Substation

Missouri City Substation Missouri City, Texas DCCM provided planning, surveying, civil engineering, and permitting services for the development of a new 138 kV distribution substation in Missouri City, replacing an aging facility with a modern, redundant design. The new substation enhances reliability through a double-feed configuration that allows continuous service during maintenance or equipment outages. Services included preparation of site development plans, grading and drainage design, and coordination of utility relocations. DCCM also managed the entitlement process, including preparation of a Specific Use Permit (SUP) application and supporting documentation for City approval. Surveying services included preparation of a subdivision plat and coordination of easements with local utility districts. DCCM supported construction procurement and continues to provide construction phase services, including coordination with contractors and resolution of field conditions. The upgraded facility increases system capacity, improves operational flexibility, and supports continued growth in Fort Bend County. Photo is a stock image and does not represent the project above. At a Glance 138 kV Electric Distribution Facility Markets Power Services Power

Pythias Solar Substation Brazoria County, Texas DCCM provided civil engineering design, permitting, and construction support for the Pythias Substation, a 138 kV–34.5 kV facility developed to interconnect a utility-scale solar farm into the Client’s transmission network. The substation serves as a critical grid-tie facility, enabling the delivery of renewable energy into the regional power system. Scope included site layout, grading, and stormwater management design, as well as preparation of construction plans and specifications. DCCM coordinated closely with Brazoria County and local drainage authorities to secure permitting approvals and ensure compliance with environmental and drainage requirements. The design incorporated a detention system and erosion control measures to protect surrounding infrastructure and natural resources. During construction, DCCM provided engineering support, responded to contractor inquiries, and coordinated survey and layout data. The project supports the integration of renewable energy, enhances grid capacity, and contributes to long-term sustainability and energy reliability in the region. Photo is a stock image and does not represent the project above. At a Glance 138 kV – 34.5 kV Electric Distribution Facility Markets Power Services Power

Seabrook Substation Seabrook, Texas DCCM provided civil engineering, permitting, and construction phase services for the new Seabrook Substation, a 138 kV electric distribution facility designed to enhance reliability and capacity for the Seabrook and Kemah area. The substation steps down transmission voltage to distribution levels and incorporates a low-profile, double-bus configuration that allows for operational flexibility and redundancy without service interruption. DCCM led the site civil design, including grading, drainage, and stormwater management systems to meet Harris County flood control criteria. Services also included preparation of construction documents and technical specifications, coordination with local and county agencies for permitting approvals, and ongoing construction administration support. The design incorporated a detention system, erosion control measures, and site screening elements to address community concerns, including a landscaped perimeter wall. Through proactive coordination and regulatory navigation, DCCM supported timely project approvals and construction progress. The completed facility improves grid resiliency, reduces outage risks, and supports continued residential and commercial growth in this coastal region. Photo is a stock image and does not represent the project above. At a Glance 138 kv Electric Distribution Facility Markets Power Services Power