Zachary Helsley, P.E. Email & Phone Number

San Jose, Ca, Us

San Jose, California, United States

Provide engineering support for Valley Water's Purified Water Program, including engineering analysis of water reuse treatment processes, cost estimations, and regulatory compliance.

San Jose, California, United States

Provide engineering support for the operation of Valley Water's conventional drinking water treatment plants. Evaluate process and water quality data to recommend treatment process modifications to ensure optimal operation of treatment processes and ensure compliance with regulatory requirements.Implement web-based water quality database to facilitate access to analytical data from agency and contract laboratories.

San Jose, Ca

Manage recycled water research projects, including evaluation of advanced oxidation process systems and innovative treatment technologies for reverse osmosis concentrate management. Prepare engineering studies for the evaluation of expansion of recycled and purified water in Santa Clara County. Prepare engineering calculations and cost estimates supporting the development of long-term inter-agency agreements supporting expansion of recycled and purified water.

San Jose, Ca

Lead operations and maintenance activities for 5,000 square-foot engineered treatment cells and ozone advanced oxidation pilot system studying novel treatment of reverse osmosis concentrate.Evaluate diurnal and seasonal wastewater flows to inform design of future advanced water purification centers. Analyze wastewater and recycled water water quality data to assess compliance with current and future discharge requirements.Develop technical memorandum detailing… Show more Lead operations and maintenance activities for 5,000 square-foot engineered treatment cells and ozone advanced oxidation pilot system studying novel treatment of reverse osmosis concentrate.Evaluate diurnal and seasonal wastewater flows to inform design of future advanced water purification centers. Analyze wastewater and recycled water water quality data to assess compliance with current and future discharge requirements.Develop technical memorandum detailing engineering studies, cost estimates, and regulatory and legislative developments in support of developing recycled water and potable reuse in Santa Clara County. Show less

San Jose, Ca

Coordinate and provide construction management support for installation of a pilot treatment system which includes ozone advanced oxidation and two 2,500 square foot engineered open-water treatment cells. The pilot system will assess the efficacy of engineered treatment cells, possibly with addition of ozone pretreatment, to treat reverse osmosis concentrate. Lead day-to-day operations of reverse osmosis concentrate pilot system, including managing staffing, resource allocations… Show more Coordinate and provide construction management support for installation of a pilot treatment system which includes ozone advanced oxidation and two 2,500 square foot engineered open-water treatment cells. The pilot system will assess the efficacy of engineered treatment cells, possibly with addition of ozone pretreatment, to treat reverse osmosis concentrate. Lead day-to-day operations of reverse osmosis concentrate pilot system, including managing staffing, resource allocations, analytical services, and maintenance. Prepared the District's Potable Reuse Test Plan Final Report, demonstrating the Silicon Valley Advanced Water Purification Center (SVAWPC) ability to produce high quality purified water in compliance with all available state and federal drinking water standards. Oversee and coordinate ongoing District research related to advanced oxidation pilot studies and reverse osmosis concentrate management. Show less

Ventura, Ca

Prepared Title 22 Engineering Report for small municipal WWTP. Assisted in the development of Recycled Water User's Manual for farmers seeking to use recycled water for irrigation. Developed mass balance model to investigate infiltration of recycled water from storage ponds. Performed complex data analysis to evaluate constituents that have historically been found in stormwater in Los Angeles County. Following analysis, assisted in the development of regional stormwater… Show more Prepared Title 22 Engineering Report for small municipal WWTP. Assisted in the development of Recycled Water User's Manual for farmers seeking to use recycled water for irrigation. Developed mass balance model to investigate infiltration of recycled water from storage ponds. Performed complex data analysis to evaluate constituents that have historically been found in stormwater in Los Angeles County. Following analysis, assisted in the development of regional stormwater monitoring programs.Performed statistical analysis to assess the presence of temporal trends in receiving water quality in the Calleguas Creek and Santa Clara River watersheds. Conducted near-field mixing zone analysis using the CORMIX 9 and EPA's Visual Plumes model to assess the dilution of POTW effluent discharge. Show less

Long Beach, California

Writing draft Requests for Proposals/ Bids (RFPs/ RFQs) for infrastructure improvement projects.Preparing draft Board and technical reports for review by senior engineering staff. Using Microsoft Project to create timelines and schedules for ongoing and future WRD projects.Collecting and analyzing site data from consultant reports and publicly available databases (Geotracker, Envirostor, etc.).Assisting in the preparation of the agency’s Regional Groundwater… Show more Writing draft Requests for Proposals/ Bids (RFPs/ RFQs) for infrastructure improvement projects.Preparing draft Board and technical reports for review by senior engineering staff. Using Microsoft Project to create timelines and schedules for ongoing and future WRD projects.Collecting and analyzing site data from consultant reports and publicly available databases (Geotracker, Envirostor, etc.).Assisting in the preparation of the agency’s Regional Groundwater Monitoring Report.Researching and summarizing various policies, regulations, reports, and permitting procedures for use by other staff members. Show less

Working for Hydrology Professor Dr. Sally Thompson as a field and laboratory assistant . Tasks included:• Extensive field work involving hiking through rough terrain to install and maintain soil moisture monitoring equipment, taking soil core samples and taking various other measurement s to characterize study sites. • Creating water-retention curves which characterize various soil profiles within the studying site using vacuum Tempe Cell techniques.• Preforming data analysis of… Show more Working for Hydrology Professor Dr. Sally Thompson as a field and laboratory assistant . Tasks included:• Extensive field work involving hiking through rough terrain to install and maintain soil moisture monitoring equipment, taking soil core samples and taking various other measurement s to characterize study sites. • Creating water-retention curves which characterize various soil profiles within the studying site using vacuum Tempe Cell techniques.• Preforming data analysis of long term site climate data in hopes of finding correlations between various weather phenomena and observed spatial variations in vegetation and soil. • Helping to prepare reports of laboratory findings for use by other researchers and site administration. Show less

Bachelor Of Science (Bs), Civil Engineering

Undergraduate studies focused on surface and groundwater hydrology, environmental fluid mechanics, and contaminant transport. Volunteered.

Master Of Science (Ms), Civil Engineering

Graduate studies focused on water and wastewater treatment technologies, water resource engineering in the Los Angeles Basin, and advanced.