Sustainability and Biosolids Committee

Contact Info: 

Greg Mockos - Sustainability and Biosolids Committee Chair
Brown and Caldwelll

Greg Mockos is Brown and Caldwell’s NW Solids and Energy Practice Leader. He has 18 years of experience specializing in biosolids and energy planning and design projects for municipal wastewater facilities in the Pacific Northwest. I manage the planning, concept development, detailed design, bidding, construction, and startup/commissioning of complex design-bid-build and design-build multi-disciplinary wastewater treatment projects focused on biosolids treatment/handling and energy recovery. My specific expertise is enhanced biosolids treatment with the goal of turning biosolids into a sustainable resource with beneficial uses in our society and economy. My wife Kara and my daughters Elsebeth and Emilia love helping me shovel SoundGro and Tagro products in our yard and garden!

Eric Schey - Sustainability Vice Chair
King County

Eric works for King County Wastewater Treatment Division as a Senior Sustainability Engineer in their Resource Recovery unit. He received his BS in Civil Engineering from Colorado State University and has 20 years of experience with wastewater infrastructure as a mechanical and civil engineer. In his current role, Eric works with WTD operations staff on ways to reduce water and power use in day-to-day operations and also coordinates with capital project teams to ensure the County’s various sustainability requirements are incorporated in individual projects.  Prior to working at King County, Eric worked for a number of consulting firms where he led the design of large infrastructure projects including wastewater conveyance and lift station improvements.

Anthony Tartaglione - Biosolids Vice Chair
Hazen and Sawyer

Mr. Tartaglione has 25 years of experience in the planning and design for the expansion, rehabilitation and repair, upgrades, and improvements of water resource recovery facilities. He received a BS in Environmental Engineering from Rensselaer Polytechnic Institute and a MS in Chemical Engineering from Colorado State University. His area of expertise is in solids treatment from preliminary treatment through advance thermal treatment including screening, grit removal, thickening, anaerobic digestion, dewatering, thermal drying, and pyrolysis. Anthony provides process mechanical calculations, energy and mass balances, unit process system analysis and selection, specification development, design drawing development, code interpretation, and multidiscipline coordination. He is a contributing author to Water Environmental Federation publications including 1) Design of Water Re- source Recovery Facilities. Manual of Practice No. 8, 6th Ed., Water Environmental Federation Publication, 2017; 2) Energy in Water Resource Recovery Facilities, Manual of Practice No. 32, 2nd Ed., Water Environmental Federation Publication, 2021 and 3) Wastewater Treatment Fundamentals III, 1st Ed., Water Environmental Federation Publication, 2022.

Ross Varin - Resource Recovery Vice Chair
Mead & Hunt

Ross Varin is a wastewater engineer and project manager at Mead & Hunt, where he works on a wide range of treatment system projects for municipal and industrial clients. He is passionate about sustainability and clean water issues that affect the Pacific Northwest. When not in the office, he can be found enjoying the outdoors through mountain biking, snowboarding, and bird watching.

April 2023: Bioenergy and Co-digestion  

Josh Newman with City of Portland, Derya Dursun with Hazen and Sawyer, Mark Van Eeckhout with City of Spring field, and Bryan Lisk with Hazen and Sawyer presented on trends of organic diversion regulations, planning for accepting source-separated organics, trends and barriers to recovering energy and resources from SSOs, and cost/benefit model and case studies related to bioenergy and co-digestion.