News & Events

To learn more about Cornerstone, review our list of regulatory updates, live webinars and press releases, as well as the schedule of conferences we will be attending.


November 20, 2018


Cornerstone will be attending The Coalition for Renewable National Gas “RNG 2018” Conference

Cornerstone’s associates will be attending the RNG 2018 Conference at the Monarch Beach Resort in Dana Point, CA on December 3-6. We hope to see you there! 

Click here for info on the conference




October 20, 2018

Cornerstone a Finalist for the ABC 2018 Project of the Year Award!

Cornerstone is proud to have been selected as one of eight finalists in the prestigious American Biogas Council’s 2018 ABC Project of the Year award for our Biogas Energy Recovery System (BERS) project at the Las Gallinas Valley Sanitary District (LGVSD) wastewater treatment plant in San Rafael, California.

Led by project manager Jessica Bernardini, Cornerstone met the District’s challenging request to prepare a design that would recover 100 percent of the methane produced from anaerobic digestion of wastewater sludge and condition it for on-site combined heat and power (CHP) generation and transportation fuel use.

The system design integrates a BioCNG™ gas conditioning system, microturbines, hydronic boiler, and renewable natural gas fueling station. Achieving 100 percent utilization of the conditioned digester gas, the system generates power for the treatment plant and serves as a heating source for digester sludge.

The District received state funding support for the BERS project, including $999,000 from the California Energy Commission and financing from the California Alternative Energy and Advanced Transportation Financing Authority.

Congratulations to all the finalists and winners of the ABC 2018 Project of the Year Award.


September 10, 2018

Cornerstone will be attending the 2018 RNG WORKS Technical Workshop & Trade Expo at the Colorado Convention Center (September 11-12).

Come visit us at Booth # 416 to speak with a CNG/RNG professional to learn more about how we can assist you in your renewable fuel needs.



May 17, 2018

We’re looking forward to seeing you at the NY Federation Solid Waste & Recycling Conference and Tradeshow next week!

Make sure to race over to booth #708 to get your name on the leaderboard and enter to win a slot car race track! 

We also have a great line-up of presentations we’ll be both moderating and presenting for – don’t miss it! 

Click here to get the details 



March 22, 2018

Cornerstone client Sussex County Municipal Utilities Authority was recently presented with the Association of Environmental Authorities’ 2018 Wave Award for Forward Thinking for its plan to increase its landfill lifespan and capacity using a mechanically stabilized earth (MSE) berm.

Shown here is Mark Swyka who joined SCMUA Chair Tom Madsen at the podium to receive the award. Tom thanked AEA for the recognition, his staff for their excellent work, the contractor for a job well done, and Cornerstone for providing the idea and the engineering.




January 13, 2018





Cornerstone will be attending the Waste 360 2018 Global Waste Management Symposium!

We look forward to seeing our valued clients and colleagues at this year’s event on February 11-14 in California!

Make sure to drop by our booth (we’ll be with our parent company, Tetra Tech) and check out our presenters:


Tuesday, February 13: Session 4, Track C

Successful Mitigation of Landfill Gas Migration at a Closed Facility with Saturated Waste

James Walker, Cornerstone Environmental Group


Tuesday, February 13: Session 7, Track C

Time for a Change? The Challenges and Lessons Learned for the Transition from Windrow Operations to Aerated Static Pile Composting

Maura Dougherty, Cornerstone Environmental Group


Wednesday, February 14: Session 9, Track C

Evaluating the Potential Impact of Landfill Mining on Groundwater Quality

Bill Soukup, Cornerstone Environmental Group





2018 Conference Schedule

Come visit us at one of this year's conferences!

2018 Global Waste Management Symposium, Indian Wells, CA: Booth #TBD
February 11-14, 2018

WIRMC 2018, The Osthoff Resort, Elkhart Lake, WI
Feb 28 - Mar 2, 2018

SWANApalooza 2018, Denver CO: We're exhibiting! Booth #TBD
Mar 05-07, 2018

SWANA NW Regional Symposium, McMenamins Edgefield Hotel: Troutdale, OR
Apr 18-20, 2018

Georgia SWANA Spring Conference, Columbus Georgia Convention & Trade Center, Columbus
April 04-06, 2018

Annual New York Federation Solid Waste Conference, Sagamore Resort, Bolton Landing, NY
May 20-23, 2018

2018 SWANA Regional Western Symposium, Palm Springs, CA
May 21-24, 2018

2018 Missouri Waste Control Coalition (MWCC) Environmental Conference, Tan-Tar-A Resort, Lake Ozark, Missouri
July 15-17, 2018

2018 SWANA Florida Summer Conference, PGA National Resort, Palm Beach Gardens, FL
July 15-17, 2018

2018 WASTECON. Nashville, TN
Aug 20-23, 2018

2018 RNG Works Technical Conference and Tradeshow. Colorado Convention Center, Denver, CO
We're speaking and presenting! Booth #TBD

September 11-12, 2018

2018 BioCycle REFOR, Raleigh, NC
Oct 15-18, 2018

****Check back soon for more updates!****