Co-founder & Wine Industry Advocate

In California’s Salinas Valley, McIntyre Vineyards’ founder and The Sitos Group co-founder, Steve McIntyre is highly regarded as one of the most knowledgeable and respected wine grape growers in the area. He currently farms 17,500 acres in Monterey and San Luis Obispo counties and owns two Sustainability in Practice (SIP) certified estate vineyards totaling 161 acres. Steve is also the owner and operator of Monterey Pacific, a vineyard management company, producing sustainable wine grapes under the SIP, SWA Lodi rules and Leading Harvest certification programs. 100% of Monterey Pacific’s managed vineyards are certified sustainable.

As a viticulturist, California Ag Leadership graduate, and enologist with a career in viticulture spanning nearly four decades, Steve possesses a unique perspective on the terroirs and wines of this great appellation. This makes him an invaluable asset to understanding effective biochar application. With Steve’s passion for climate change, he strongly believes that sustainability is not about setting standards, but measuring results. As a grower who strives for greater soil health, higher crop yields, and water reduction in his own fields, Steve’s involvement in the Sitos Group is essential for demonstrating biochar’s legitimacy and advantage for the agriculture and CDR communities.

Director of Business Operations

Jessica oversees and guides strategic initiatives across operations, communications, and business development for Sitos Group. With multiple years of experience in the carbon removal and biochar space, she helped bring Sitos Group’s first pilot facility online, is leading efforts to bring their first commercial project to completion, has brokered key off-take agreements for both biochar and carbon credits, and plays a central role in building partnerships between the agricultural and carbon removal communities.

Jessica also leads the UnCORCed initiative, Sitos Group’s mission to develop a carbon-negative commodity that supports both climate and soil health goals. A frequent speaker at industry events, she is passionate about making biochar in agriculture more accessible and actionable—especially for farmers, growers, and land stewards. Raised in a ranching community, Jessica brings deep respect for agriculture into every aspect of her work and believes every journey in a new industry begins with a conversation.

Administration & Marketing Manager

Christina Nessen leads marketing, communications, and public relations initiatives for Sitos Group, helping connect the company’s work in biochar, carbon removal, and sustainable agriculture with growers, industry partners, and the broader community. Drawing on her background in agricultural marketing and grower relations, she supports business development efforts, industry outreach, content strategy, events, and educational programs that advance awareness and adoption of biochar.

Prior to joining Sitos Group, Christina worked in the California pistachio industry, supporting growers through communications, marketing, harvest operations, and educational programming initiatives. A graduate of California Polytechnic State University, San Luis Obispo with a degree in Agricultural Business, Christina is passionate about translating complex topics into clear, actionable information for agricultural audiences and helping bridge the gap between agriculture and emerging climate solutions.

Board of Directors Member & Almond Industry Advocate

Daniel Errotabere is a general partner of a family farm operating in Riverdale and Huron area of California. The farm is diversified with crops that include Pima Cotton, Barley, Processing Garlic, Processing Tomatoes, Green and Dry Garbanzos Beans, Seed lettuce, Wine grapes, Pistachio and Almonds. Mr. Errotabere is a third-generation farmer and along with his two brothers Jean & Remi, farms about 5,200 acres covering the counties of Fresno and Kings on the western regions of the San Joaquin Valley. Principal partner of El Dorado Almonds. Daniel attended and graduated from California State University, Fresno where he received his Bachelor of Science Degree in Agribusiness. He is also a graduate of the California Agricultural Leadership, Class XXI, a two-year fellowship program.

He is currently on the Board of Directors for Fresno Madera Farm Credit Association as well as a member of the board of Trustee on the Agricultural Foundation for California State University, Fresno. He recently has served on the Board of Crescent Canal Company, Served as member & President to the Executive Board of the Fresno County Farm Bureau. Board of Directors California Farm Bureau Federation. Additionally, Mr. Errotabere has recently served as a board member and President of the Board for the Westlands Water District and board member and Treasurer for the Family Farm Alliance.