Bill Chen, P.E. Email & Phone Number

San Francisco, California, United States

● Oversees environmental site assessment, mitigation, and remediation of San Francisco’s brownfields through the Site Assessment and Mitigation Program, Voluntary Remedial Action Program, and manages the Article 31 Program. Regulates San Francisco Health Codes Articles 22A, 22B, and 31, Building Code 106A.3.2.4, and California Health and Safety Code Section 101480, to protect public health, safety, and the environment. ● Performs technical review of construction plans, geotechnical reports, Phase I ESAs, investigation work plans, site characterization reports, risk assessments, remediation work plans, site mitigation plans, engineered remediation and mitigation designs, completion reports, operations and maintenance plans, deed restrictions, and other environmental control documents. Issues regulatory letters to building permit applicants and contaminated site owners. Performs plan review through the Department of Building and Inspection permit application process, utilizing the Permit Tracking System, and Site Mitigation Environmental Health Database.● Communicates with project engineers, geologists, risk assessors, consultants, owners, architects, and contractors to facilitate compliance. Communicates environmental health risks to community members, DPH leadership, the Health Commission, and San Francisco Board of Supervisors. Coordinates across City agencies including the San Francisco Department of Building Inspection, Department of Public Works, Planning Department, Port of San Francisco, Recreation and Parks, Office of Economic Workforce Development, and others.● Projects include Naval Station Treasure Island, Hunters Point Naval Shipyard, affordable housing projects, and over 50 active cases throughout San Francisco which disturb 50 cubic yards of soil or more in areas with known or suspected contamination.

Oakland, California, United States

● Provided internal environmental consulting services for City of Oakland. Projects include housing developments, capital improvements, and property acquisitions. Services include project evaluation, planning, cost estimation, and delivery of environmental site assessments and remediation programs.● Delivered project management of City compliance programs, including UST, APSA, Gas Dispensing, and SWPPP. Facilitates HMBP, BAAQMD permitting, and NPDES compliance. ● Facilitated program improvement. Upon joining City, rehabilitated programs and resolved violations, bringing City into compliance. Established clear program scopes, roles and responsibilities, training, inspection, and testing schedules, and inter-departmental workflows to facilitate compliance across City facilities. Identified near and long-term solutions to meet compliance.

Oakland, California

● Delivered project management on portfolio of approximately $2M. Responsibilities included, client relations, project scoping, proposals, change orders, and budgets and schedules management. Supervised staff in workload, training, and career development. Supported office-wide recruitment in identifying skill needs and attending recruitment events.● Managed VIMS design and CQA in design-build projects. Systems included sub-slab ventilation, geomembrane, and gas detection systems or monitoring plans. Systems were designed to meet complex construction sequencing and site conditions. Worked closely with contractors, architects, and trades through RFIs, submittals, and coordination issues to resolve design issues during active construction. Managed team of CQA personnel and reported construction completion to oversight agencies. ● Implemented in-situ injection remediation programs. Oversaw series of potassium permanganate injections targeting vinyl chloride plume at a former Naval Air Base and managed significant surfacing challenges to project completion. Oversaw injection of EHC® slurry and Dehalococoides inoculum (SDC-9®) to install a PRB targeting chlorinated solvents, and managed significant clogging and surfacing issues to project completion.● Supported investigation and remediation of former chemical facility containing chlorinated VOCs and 1,4-dioxane impacts in soil, groundwater, and soil vapor. Managed groundwater monitoring, soil vapor investigation, historical document reviews, and a feasibility study/remedial action plan for persulfate-based in-situ chemical oxidation injection, soil vapor extractions, and managed natural attenuation. Identified historical off-site source likely attributable to downgradient site impacts.

Designed and implemented site investigation and remediation efforts. Prepared and managed project logistics including budgets, proposals, work plans, investigation reports, regulatory correspondence, staff resources, and subcontractors. Conducted risk evaluations through assessment of geologic and chemical data.Chlorinated Solvent Groundwater Plumes• Characterized sites using traditional (drilling, sampling, monitoring) & advanced engineering tools (MIP, CPT, HPT).• Conducted feasibility assessments, evaluating treatment (biological, chemical, thermal, surfactant) and implementation strategies (direct injection, passive reactive barriers).• Refocused remediation goals, reducing estimated client costs from $700,000 to $450,000 in one project.• Designed in situ remediation programs based on site conditions.• Submitted work plans to Los Angeles, Central Valley, and San Francisco Bay Water Boards.Multi-Parcel Brownfield Redevelopment• Provided investigation, remediation, monitoring, risk management, and strategic planning services to developer for 27-acre site in Redwood City, Ca. • Developed site management plan, remedial action plan, and health and safety program to address buried asbestos, 15 former USTs, surficial tar seeps, chlorinated solvents migration, and unanticipated conditions. • Evaluated VOC and methane intrusion cancer risk in soil gas and recommended mitigation measures.• Obtained closure for regulatory cases pertaining to impacts from surficial tar seeps and four USTs.

Fremont, California

Monitored treatment performance and regulatory compliance for drinking water utility district. Addressed operational water-quality issues for four treatment facilities serving population of 300,000. Extensively utilized SCADA, database tools, and Excel.Filter Rerating Study – Obtained approval from CDPH to rerate plant treatment capacity from 28 to 38 MGD through demonstration study. 'Treatment Goals – Developed long-term water quality goals from 5-year review of 32 water quality parameters.Engineering Tool Optimization – Identified and implemented spreadsheet tools (PivotTables, PivotCharts, Open Database connections, etc.) improving efficiency of monitoring and reporting tasks.

Uc Berkeley

• Analyzed data to find the relation between wind patterns, temperature, and dissolved oxygen levels in wetlands• Assisted in the design, construction, and execution of experiments• Utilized ADV and other instruments to measure wetland geometry and flows

San Diego, California

• Private instructor in flute performance for five students• Quartet performer at wedding ceremonies• Pit Orchestra musician in musical productions

La Mesa, California

• Greeted and engaged restaurant guests• Facilitated monetary transactions with patrons• Provided general upkeep of dining area• Supported kitchen staff with food preparation

Bachelor Of Science - Bs, Civil & Environmental Engineering

Activities and Societies: Vice President of Chi Epsilon Civil Engineering Society, Senior Officer of Cal Water Treatment Team, Student.

High School Diploma, Music Theory, Performance, And Composition, 6-12

Activities and Societies: Wind Ensemble, Chamber Orchestra, Jazz Band, Pit Orchestra, Instrumental Music Council, Academic League.