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About Ensitu
SUBSECTION LINKS:About Ensitu | John Yaroslaski Resume
Education
B. S., Environmental Engineering, California Polytechnic State University, San Luis Obispo

Organizations
National Society of Professional Engineers
Water Environment Federation
California Onsite Wastewater Association
American Society of Agricultural Engineering
Construction Specifications Institute
Appointed member of City of Malibu Onsite Wastewater Advisory Committee

Experience
John has experience in both the private and public sectors, with specific academic training in water resources and wastewater engineering. John's main focus is the design of water and wastewater treatment systems for small to medium sized communities, commercial complexes, casinos, and individual residences. John also has specific knowledge in the design of onsite wastewater systems for coastal communities such as Malibu, Carpentaria, Big Sur, and others.

John is a lecturer at Cal Poly San Luis Obispo. John teaching a two quarter senior design class required for all graduating environmental engineering students. John also teaches graduate level wastewater treatment engineering courses specializing in onsite and decentralized wastewater treatment and management and small advanced onsite wastewater treatment systems. John is also working with California Polytechnic University San Luis Obispo and Howard Kolb with the Central Coast Regional Water Quality Control Board to form the Cal Poly Onsite Wastewater Training Center.

John is an active member of the California Onsite Wastewater Association and the California Environmental Heath Association. Before forming Ensitu Engineering Inc., John worked in the Water and Wastewater Division of John L. Wallace and Associates in San Luis Obispo, California and in the Water Resources division of Rocky Mountain Consultants in Englewood, Colorado, where he designed sewer collection systems, water and wastewater lift stations, and water and wastewater treatment facilities. Subsequently, John worked for SCG Enterprises where he designed and installed onsite wastewater collection and treatment systems throughout the foothills of Colorado.

John also acted as a technical advisor to Santa Barbara County Environmental Health Department in developing onsite wastewater standards, The Colorado Environmental Health Association in developing design criteria for high altitude/cold weather advanced wastewater systems, and to Dr. Robert Siegrist at the Colorado School of Mines in developing Colorado Onsite Wastewater Training Center. The following representative projects illustrate the water and wastewater experience that John has acquired.

Representative Projects
Onsite Wastewater:

Job Title Description Location
Malibu Colony Plaza Engineering design of a 45,000 gallon per day Title 22 onsite wastewater treatment facility and subsurface disposal system Malibu California
Malibu Creek Plaza Engineering design of a 40,000 gallon per day Title 22 onsite wastewater treatment facility requiring nutrient removal and subsurface disposal system Malibu California
Malibu Bay Club Engineering design of a 40,000 gallon per day Title 22 onsite wastewater treatment facility requiring nutrient removal and subsurface disposal system Malibu California
Monarch Grove WWTP Engineerign review, process evaluation, and modifications of an existing 20,000 gallon per day onsite wastewater treatment system to bring facility into Title 22 compliance Los Osos California
Dunn School Project Engineer in charge of engineering design, specifications, and construction monitoring of a 6,000 gpd Advanced Onsite Wastewater Treatment and disposal System Los Olivos California
Pacifica Graduate Institute Project Engineer in charge of engineering design and specifications of a 4,500gpd Advanced Onsite Wastewater Treatment and disposal System Carpentaria California
Malibu Beach RV Park Project Engineer in charge of engineering design and specifications of a 8,000gpd Advanced Onsite Wastewater Treatment and Disposal System Malibu California
Trankas Market Project Engineer in charge of engineering design and specifications of a 6,000gpd Advanced Onsite Wastewater Treatment and disposal System Malibu California
  • The Inn of The Seventh Ray, Malibu California, 4,500gpd Advanced Onsite Wastewater Treatment and disposal System; Project Engineer in charge of engineering design and specifications. Dukes of Malibu; odor control system, controls upgrade, and system upgrade
  • Residential Systems in Santa Barbara County California; numerous engineering design and specifications for advanced onsite wastewater treatment systems
  • Residential Systems in Malibu, California; numerous engineering design and specifications for advanced onsite wastewater treatment systems
  • Buffalo Bill Museum and Grave Site, Denver City and County, Colorado wastewater treatment system and STEP system design. STEP system installation.
  • CONOCO Service Station, Summit County, Colorado, recirculating sand filter and STEP system design. Orenco7 sand filter equipment and STEP system installation.
  • Berthoud Pass Ski Lodge wastewater system and STEP system design. STEP system installation

Municipal Wastewater:

  • City of Fillmore 9 acre subsurface irrigation wastewater reuse project
  • San Miguel Wastewater Treatment Facility Upgrade treatment system design, percolation bed remediation, and construction specifications
  • City of Pismo Beach Wastewater Collection System Master Plan; Responsible for development of model and design of improvements
  • City of Pismo beach Wastewater Lift Station Upgrades, design and construction specifications
  • The City of Yreka 2mgd (million gallons per pay) improvements; design of a tertiary filtration unit, lift station, and controls for subsurface reuse.
  • City of Broomfield, Colorado, Design Engineer; 8.0 mgd wastewater effluent reclamation pump station
  • Town of Erie, Colorado Design Engineer; 0.6 mgd advanced secondary wastewater treatment facility
  • Town of Erie, Colorado–Design Engineer; 1.8 mgd wastewater pump facility
  • Town of Erie, Colorado –Design Engineer; 1.0 mgd wastewater pump facility
  • Broomfield, Colorado–Design Engineer; 0.5 mgd wastewater pump facility

"Dedicated to Achieving higher standards in on-site and decentralized wastewater treatment systems."

Specializing in the design, engineering, and permitting of advanced onsite wastewater treatment and disposal systems.

Our main focus is coastal communities with septic system problems such as Malibu , Carpentaria, Santa Barbara , Big Sur, San Luis Obispo , Cayucos, etc.