Julia Richardson, P.E.

Soil and Sediment Sampling Investigation, Remediation Monitoring Support at a Chemical Distribution Facility, Portland, Oregon — Performed soil and sediment sampling for the site investigation within Portland Harbor. Performed monitoring well development and routine maintenance for onsite piezometers.

Sediment Investigation for Maintenance Dredging, Duwamish River, Seattle, Washington — Oversaw vibracore drilling and performed sediment sample processing for sediment cores collected in the Duwamish River. Samples were used to support waste characterization of dredge material.

Sediment Investigation for Baseline Characterization, Columbia River, Longview, Washington — Oversaw vibracore drilling for the collection of sediment cores and power grab sampling in the Columbia River. Performed sediment sample processing and data analysis to produce a site baseline characterization report.

Wastewater Treatment Facility Consolidation Project, West Point, California — Conducted community flow projections, treatment system hydraulic analyses, and infrastructure sizing calculations for the consolidation and upgrade of two nearby wastewater treatment facilities. Prepared a basis-of-design report, a 30% design cost estimate, and all design submittal packages, including project drawings, technical specifications, and front-end specifications. Coordinated the bidding process by collecting and addressing contractor’s questions prior to bidding and analyzing bid packages. Performed value engineering after bid award as required by the California State Revolving Fund.

Wastewater Treatment Plant Solids Dewatering Upgrade, Auburn, California — Aided in the construction management and inspection of a screw press sludge dewatering system. Reviewed and responded to all contractor submittals, requests for information, and contract change orders. Analyzed equipment performance testing data and conducted troubleshooting by collecting sludge samples and analyzing for filamentous bacterial growth. Performed a life cycle cost analysis assuming different performance scenarios of the new screw press system to determine the minimum necessary operating parameters.

Pump Station Improvements Project, Auburn, California — Prepared all project drawings, technical specifications, and front-end specifications for the construction of a wastewater pump station. Coordinated the bidding process by collecting and addressing the contractor’s questions prior to bidding, analyzing bid packages, and preparing a staff report for bid award. Aided in construction management by processing all contractor submittals, requests for information, and contract change orders.

Recycled Water System Upgrades, Colusa, California — Performed activated sludge modeling for the expansion of an existing wastewater treatment plant. Analyzed the capacities of existing treatment plant infrastructure to determine project items to be included in the plant upgrade. Prepared a series of technical memoranda summarizing the state and capacity of existing facilities.

Algae Control Project, Colfax, California — Prepared all project drawings, technical specifications, and front-end specifications for the construction of a suspended air floatation system for the removal of algae accumulated in wastewater equalization ponds. Coordinated the bidding process by collecting and addressing the contractor’s questions prior to bidding and analyzing bid packages.

Chlorine Bleach Conversion Project, Bodega Bay, California — Prepared all project drawings, technical specifications, and front-end specifications for the construction of a chlorine bleach disinfection system to replace an outdated chlorine gas disinfection system.

Soil and Groundwater Remediation, Monitoring Support at a Chemical Distribution Facility, Santa Ana, California — Routinely organize and evaluate quarterly and semiannual groundwater data to monitor the ongoing operation of a groundwater pump-and-treat and dual-phase extraction system. Routinely produce semiannual technical reports to summarize data trends and system effectiveness. Previously produced work plans for targeted soil removals on site.

Groundwater Monitoring Support at a Former Wood Treating Facility, Navassa, North Carolina — Routinely organize and evaluate semiannual groundwater data to monitor changes in groundwater concentrations of site contaminants of concern (COCs). Routinely produce semiannual technical reports to summarize trends in groundwater over time. Previously organized and analyzed groundwater and soil data to evaluate groundwater contamination resulting from potential COC leaching from the overlying vadose zone soil.

Analysis of Leach Field Operations on Groundwater Quality, Maine — Performed groundwater elevation monitoring and water quality sampling at a series of monitoring wells around a community leach field. Summarized data and findings in quarterly technical memoranda.

Feasibility Study for a Steel Mill, Portland, Oregon — Assisted in writing a focused feasibility study for uplands situated adjacent to Portland Harbor to assess the status of COC migration pathways and propose options for further mitigation.

Technical Impracticability Evaluation Report, Portland, Oregon — Assisted in writing a technical impracticability evaluation report to evaluate metals fate and transport in groundwater, porewater, and sediment adjacent to and within Portland Harbor.

Alternatives Analysis for Wastewater Compliance, Angwin, California — Developed an alternatives analysis that evaluated several possible infrastructure improvements that could be made to meet requirements set forth in the California General Waste Discharge Requirements for Winery Process Water.

Reports of Waste Discharge under the National Pollutant Discharge Elimination System, California — Wrote several reports of waste discharge for municipalities operating under the NPDES as well as those operating under general orders. Performed the organization, analysis, and summary of all data required by each NPDES or general order permit.

Selenium and Thallium Pollution Prevention Plan, Auburn, California — Wrote a pollution prevention plan as required by the California Regional Water Quality Control Board in response to elevated levels of selenium and thallium in wastewater effluent. Analyzed effluent data for selenium and thallium and presented a plan for subsequent sampling in the event that effluent levels remain above the maximum contaminant level.

California Water Resources Control Board Title 22 Engineering Report, Angwin, California — Cowrote a California Water Resources Control Board Title 22 Engineering Report for the use of secondary undisinfected recycled wastewater in irrigating hay fields.

Hudson River Water Quality Sampling and Monitoring, New York — Conducted surface water sampling and monitoring during installation of a power transmission cable in the Hudson River, extending from Canada to New York City.

Wastewater Infrastructure Asset Inventory, Auburn, California — Collected, organized, and analyzed asset inventory data—including capital equipment costs, expected equipment life cycle, failure risk, and failure impact—for all horizontal and vertical assets of a wastewater collection and treatment system. Asset inventory data were used to prioritize and plan capital improvements projects.

Stoneman Park Development Odor Study, Pittsburg, California — Performed the organization and analysis of historical odor complaint data associated with a landfill in Pittsburg, California.  Created heat maps in ArcGIS and analyzed associated qualitative data to determine the potential for odor at a proposed development situated adjacent to the landfill.

Potable Groundwater Well Clogging Evaluation, New Jersey — Collected, organized, and analyzed parameters associated with biological, chemical, and physical fouling of potable water supply wells across New Jersey to identify the cause of well clogging and appropriate rehabilitation procedures. Produced comprehensive data summary files for each well in the supply system.

Hydroelectric Dam Relief Well Rehabilitation, Maine and New York — Collected and analyzed indicative parameters of biological, chemical, and physical fouling of dam relief wells. Performed fieldwork related to the rehabilitation of relief wells at three hydropower sites based on the determined cause of well clogging.

Landfill Construction Backfill Suitability Testing, Maine — Performed gradation tests and standard proctor tests to determine the suitability of backfill used in the construction of new landfill cells.