Miguel Roberts-Vallejo

D Licensed Municipal wastewater Operator

Trenton, Michigan, United States

About

Experience

  • WWTP - Junior Heavy Equipment at City of Trenton
    Jan 2024 - Present · 2 yrs 7 mos

    Lab Work & Testing: Run daily tests in the plant lab for parameters like pH, dissolved oxygen, solids, and chlorine to check water quality and make sure the treatment process is working as intended. ​Equipment Maintenance: Fix and maintain heavy plant equipment, including pulling and rebuilding pumps, servicing blowers, and working on clarifier drives to keep everything running and prevent breakdowns. ​Daily Plant Operations: Monitor tank levels, adjust chemical feed pumps, and manage sludge flow based on lab results and system readings. ​Instrument Care: Clean and calibrate lab meters, probes, and testing equipment so all readings stay accurate. ​Safety & Logs: Keep neat records of lab data, chemical usage, and maintenance logs while following standard safety rules and lockout/tagout procedures.

  • Veolia (Wyandotte, Michigan, United States)
    • Wastewater operator I
      Feb 2023 - Jan 2024 · 1 yr

      Process Control & Monitoring: Managed primary and secondary clarifier operations, ensuring optimal solids separation and maintaining detailed regulatory documentation. Aeration System Management: Operated and monitored positive pressure aeration trains to maintain biological health and process efficiency. Solids Handling & Dewatering: Managed multiple centrifuge units for the processing and removal of Return Activated Sludge (RAS) to maintain stable plant MBSS. Logistics & Heavy Equipment: Operated semi-sludge haulers for site staging and coordinated efficient pickup and transport logistics. Flow Optimization: Monitored influent headworks and managed centrifugal pump rotations to stabilize flow rates, ensuring continuous movement and system reliability. Regulatory Compliance: Performed critical laboratory analysis and sampling for PH, DO, TRC, CBOD, Ammonia, Phosphorus, and Fecal Coliform to ensure 100% adherence to state environmental standards. Equipment Proficiency: Utilized specialized lab instrumentation, including moisture analyzers, incubators, and automated sample pumps for process verification. Chemical Management: Directed the receiving and offloading of chemical deliveries, ensuring safe storage and inventory accuracy.

    • Operations and Maintenance Technician
      Nov 2021 - Feb 2023 · 1 yr 4 mos

      Training: Train and guide crew members on standard operating procedures, safety protocols, and the troubleshooting of specialized facility equipment. ​Scheduling: Manage shift coverage, coordinate overtime, and call in operators to handle emergency situations, high-flow events, or staffing shortages. ​Timekeeping & Documentation: Track and log daily hours, overtime, and shift changes. ​Compliance & Record Keeping: Maintain precise operational logs, equipment maintenance records, Work orders and safety data in strict accordance with regulatory standards. Emergency Storm Management: Led storm pumping station operations during high-flow wet weather events to prevent system backups and ensure public safety. Combined Sewer Overflow (CSO) Treatment: Managed retention basin operations and the treatment of combined sewage to mitigate environmental impact during surges. Mechanical Systems Maintenance: Conducted routine inspections and performance verification of critical infrastructure, including gearboxes, compressors, chemical delivery systems, and pressurized air lines. Pump Specialized Maintenance: Performed complex maintenance, repairs, and full mechanical rebuilds of high-capacity centrifugal pumps. Industrial Pipefitting: Proficient in the installation and repair of PVC, copper, and brass piping systems and industrial fittings. Analytical Testing: Executed precise laboratory testing on influent and effluent samples for TSS, CBOD, NH3 (Ammonia), Phosphorus, and TRC to verify treatment effectiveness. Heavy Equipment Operation: Certified operation of cranes and forklifts for equipment transport, installation, and facility maintenance tasks. Data Integrity: Maintained rigorous operational logs and ensured all process data was accurately entered into the facility database for regulatory auditing. Facility Stewardship: Upheld high standards of general housekeeping and safety protocols to ensure a clean, hazard-free industrial environment.

    • General Laborer / Warehouse Associate
      Jun 2021 - Nov 2021 · 6 mos

      Inventory Control: Systematized and maintained the facility warehouse; performed regular audits of critical spare parts and consumables to ensure zero downtime for emergency repairs. Site Maintenance: Executed comprehensive groundskeeping and landscaping to maintain professional facility standards and clear access to outdoor assets. Facility Stewardship: Managed general housekeeping for administrative and operational areas, ensuring a sanitary, organized, and safety-compliant work environment.

  • General Laborer at Flatrock Bagging
    May 2020 - Jun 2021 · 1 yr 2 mos

    Material Handling & Palletization: Efficiently managed high-volume inventory by hand-stacking 50lb–80lb units onto pallets, ensuring stable and safe loads for transport. Logistics & Load Securing: Assisted in the professional tarping and high-tension strapping of palletized loads on trailers to ensure zero cargo shift during transit. Forklift & Freight Movement: Operated industrial forklifts to transition heavy freight from warehouse storage to loading bays, prioritizing speed without compromising safety. Industrial Sanitation: Maintained a hazard-free work environment by clearing debris (rock, salt, sand) from high-traffic zones and performing specialized cleaning of industrial silos.

  • Warehouse Associate at Republic National Distribution Company
    Jan 2020 - Feb 2020 · 2 mos

    High-Volume Order Fulfillment: Operated on a high-speed assembly line, accurately sorting and palletizing wines and spirits into cases for distribution. Returns Management & Reconciliation: Streamlined the returns process by auditing incoming stock and re-integrating assets into precise warehouse locations. Accuracy & Quality Control: Maintained rigorous speed-to-accuracy ratios in a fast-paced production environment to ensure zero-error shipments.

  • Service Champion at Taco Bell
    Jul 2019 - Jan 2020 · 7 mos