Union City occupies the southern portion of Alameda County between Hayward and Fremont, with an industrial corridor along the Bay, established residential neighborhoods in the hills, and growing mixed-use development around the Union City BART station. Site development here works through a combination of city-level permitting, county fire oversight through the Alameda County Fire Department, and water service from the Alameda County Water District. Calichi Design Group serves Union City from our Oakland office, about 20 miles to the north, carrying Bay Area regulatory experience that applies directly to projects here.
Civil Engineering in Union City, CA
Union City’s development market runs across a range of project types: infill residential, transit-oriented mixed-use near the BART station, industrial and warehouse development near the I-880 corridor, and commercial projects on both new and redeveloped sites. Each type carries a different permitting path, different utility coordination requirements, and different stormwater compliance thresholds. The common thread is a Bay Area regulatory environment that rewards pre-submittal coordination and well-organized plan check packages.
Because water service in Union City comes from the Alameda County Water District rather than a city-operated utility, utility confirmation is a first step on every project. Getting that right early prevents conflicts at plan check and avoids redesign when connection requirements differ from initial assumptions. We confirm the serving agencies for water, sewer, and fire at the outset of every engagement.
Union City Permitting Agencies
Site development in Union City involves several agencies depending on scope:
- City of Union City, Economic and Community Development Department: handles planning entitlements, building permits, plan check, and related land use approvals.
- City of Union City Public Works Department, Engineering Division: reviews grading plans, drainage plans, encroachment permits for work in city right-of-way, and public improvement agreements. The Public Works Department also includes Maintenance and Transit divisions.
- Alameda County Fire Department (ACFD): provides fire services to Union City and reviews fire access design, hydrant placement, and fire flow adequacy for development projects. ACFD operates 29 stations across its service area and reviews fire flow documentation as part of building permit plan check.
- Alameda County Water District (ACWD): serves Union City for potable water service, along with Fremont and Newark. Water design and new service connections for Union City projects run through ACWD’s development services process and design standards.
Sewer service in Union City is coordinated through the City’s own system and Public Works Department. We confirm the serving agencies for each project site before design begins because standards and submittal requirements vary by provider and parcel location.
Civil Engineering Services in Union City
Calichi Design Group delivers site civil engineering across the full project lifecycle in Union City. Our services include:
- Grading and drainage design, earthwork analysis, and drainage area calculations
- Water design coordinated with Alameda County Water District (ACWD) standards and connection requirements
- Sewer design coordinated with City of Union City Public Works requirements
- Encroachment permits and public right-of-way improvements, including curb, gutter, sidewalk, and driveway approach design
- ADA site accessibility design and path-of-travel upgrades
- Fire access design and vehicle turning radius compliance for Alameda County Fire Department review
- Dry utility coordination through our dry utility consulting services, covering PG&E, AT&T, and Comcast franchise utilities in Union City and South Alameda County
- Construction documents through city plan check, agency coordination, and construction administration support
We handle residential, multifamily, commercial, industrial, and mixed-use projects in Union City. Fixed-fee proposals are available for any project scale, and our team carries PE licensure in California and multiple other states, with a licensed QSD/QSP on staff for projects requiring construction stormwater compliance.
C.3 Stormwater and SWPPP in Union City
Union City projects fall under the Bay Area Municipal Regional Stormwater Permit (MRP), issued by the San Francisco Bay Regional Water Quality Control Board and coordinated locally through the Alameda County Clean Water Program. The MRP’s C.3 post-construction requirements apply to any project that creates or replaces 10,000 square feet or more of impervious surface. Projects at that threshold must incorporate Low Impact Development source controls and site design measures and, in most cases, must provide on-site stormwater treatment through compliant Best Management Practices such as bioretention cells, flow-through planters, or permeable pavement. Our stormwater management practice covers C.3 BMP sizing, design, and Operations and Maintenance Agreement preparation from the first site plan through project closeout.
Projects disturbing one acre or more require a Stormwater Pollution Prevention Plan (SWPPP) under California’s Construction General Permit (CGP). Our licensed QSD/QSP prepares the SWPPP, completes the Risk Level determination, handles SMARTS system registration, and provides construction-phase inspection and reporting support. We align the SWPPP with the grading and drainage plans from the start so both documents support each other through agency review and construction.
Fire Flow Studies in Union City
New construction and change-of-use projects in Union City typically require a fire flow study demonstrating that the water distribution system can deliver adequate flow at adequate residual pressure to meet California Fire Code requirements. The Alameda County Fire Department (ACFD) reviews fire flow documentation for Union City projects as part of the building permit plan check process.
Fire flow analysis in Union City involves coordination with the Alameda County Water District (ACWD), which operates the water distribution system serving the city. We prepare fire flow studies using hydraulic analysis of the existing ACWD distribution system, field-collected or district-provided flow test data, and the project’s California Fire Code demand requirements based on occupancy type and construction classification. Where the existing system doesn’t meet the required flow, we identify the improvement options, whether an upgraded service connection, looped main extension, or on-site fire suppression system, and carry that finding forward into project design and cost estimates before permit documents are complete.
Nearby South Bay and East Bay Projects
Calichi Design Group hasn’t completed a project in Union City itself. Our directly relevant work covers Oakland and the broader East Bay market, 10 to 20 miles to the north and east. Projects near Union City in our completed portfolio include:
- Dublin Transit Center (Dublin, CA): new construction of a 5-story, 516-space, 39,000-square-foot parking structure on a 2.5-acre parcel. Dublin is approximately 10 miles east of Union City on the I-580 corridor, with site development, utility coordination, and public right-of-way work in the same East Bay regulatory environment.
- Fremont High School Net-Zero Campus (Oakland, CA): demolition of 95 percent of an existing K-12 campus and new construction of 9 buildings totaling 190,000 square feet, with C.3 stormwater treatment, grading, utility infrastructure, and athletic facilities on a 12-acre Oakland Unified School District site. Oakland is about 20 miles north of Union City on the same Bay Area MRP regulatory framework.
- KIPP Bridge Academy (Oakland, CA): civil design for a two-story charter school including grading, storm drainage, stormwater control measures, and utility coordination through the City of Oakland plan check process.
- 57-Unit Affordable Housing Complex (Oakland, CA, 95th and International Blvd.): civil entitlement documents, full construction drawings, City of Oakland and Caltrans encroachment permits for a mixed-use affordable housing project on a constrained infill site.
The Bay Area MRP stormwater requirements, Alameda County permitting processes, and ACWD water design standards that apply to work in Oakland and Dublin overlap directly with Union City’s regulatory environment. That’s the same regional permit, the same regulatory water board, and the same permitting culture you’ll encounter on your Union City project.
Frequently Asked Questions
When does a Union City project require C.3 stormwater compliance?
C.3 compliance is required when a project creates or replaces 10,000 square feet or more of impervious surface. That threshold triggers Low Impact Development requirements and typically requires on-site stormwater treatment through a compliant BMP. Projects below that level still need to incorporate standard source controls but aren’t required to provide on-site treatment facilities.
Which fire department reviews fire flow studies in Union City?
The Alameda County Fire Department (ACFD) provides fire services for Union City and reviews fire flow studies as part of the building permit plan check. The study must demonstrate that the Alameda County Water District system can meet California Fire Code demand for the project’s occupancy type and construction classification.
Who provides water service in Union City?
The Alameda County Water District (ACWD) provides potable water service to Union City, along with Fremont and Newark. Water design for new development must follow ACWD’s design standards and connection requirements. Sewer service in Union City is coordinated through the City’s own system and Public Works Department.
Does a Union City project need a SWPPP?
Yes, if ground disturbance totals one acre or more. California’s Construction General Permit requires a SWPPP prepared by a licensed QSD/QSP and registered in the SMARTS system before grading begins. Projects with smaller disturbance footprints typically need an erosion control plan rather than a full SWPPP.
Can Calichi Design Group handle both civil engineering and dry utility coordination for a Union City project?
Yes. Our dry utility consulting services cover franchise utility coordination with PG&E, AT&T, Comcast, and other providers in Union City and the broader South Alameda County market. We run dry utility design in parallel with civil site design so both packages advance through plan check on the same schedule.
Start Your Union City Civil Engineering Project
If you’re planning a development project in Union City and need civil engineering, stormwater design, a fire flow study, or dry utility coordination, contact Calichi Design Group. Our Oakland-based East Bay team serves the full Alameda County market and can provide a fixed-fee proposal after reviewing your site. Reach us through our contact page and expect a response within one business day.