Also: Napa architect Kelley completes green program; Nov. 18 meeting on air rules

Santa Rosa-based KriStar Enterprises Inc. formed an alliance with Virginia-based Americast Inc. to make, distribute and maintain certain of each other's stormwater-filtration systems.

Americast, which has six precast concrete structures plants in Virginia, South Carolina and West Virginia, will make KriStar's FloGard stormwater-filtration products.

KriStar will make the Filterra and Bacterra line of products that use biological elements such as bacteria, plants and trees to slow down and treat rainwater.

"Filterra products are very similar to our KriStar TreePod," said Michelle Dunlop, marketing director. Filterra doesn't have a prefilter chamber or bypass, giving customers design options.

Making such heavy items closer to job sites lowers transportation costs and allows for claiming credit for sourcing products within 500 miles for Leadership in Energy and Environmental Design, or LEED, certification credit, according to the companies.

"These items are huge and costly to ship," Ms. Dunlop said.

KriStar's biggest TreePod, which accommodates two trees to absorb and filter rainwater hitting urban sidewalks, weighs 27,500 pounds and is 18 feet wide, requiring a crane to move onto and off of flatbed trucks.

KriStar has 80 employees, including 25 in the warehouse and plant in Santa Rosa as well as offices in Southern California and Georgia and the Drainage Protection Systems service and maintenance division.


Napa-based architect Paul Kelley completed the U.S. Green Building Council's Green Building Professional Certificate Program, making him a master green building professional. The program is offered through the council's Redwood Empire chapter, which recently added a Napa branch.

Mr. Kelley's project in conjunction with the program was "The Greening of Historic Structures," a study of "the inherent sustainability of historic buildings."


As the California Air Resources Board prepares to consider significant revisions to the proposed off-road diesel emissions regulations, the board plans to hold a workshop at its Nov. 18 meeting in Sacramento on newly compiled inventories of diesel particulate matter emissions and suggested connections with rates of premature death.

The board also is taking comments for the December meeting. For more information, call 866-6-DIESEL or visit


Related to the story in this issue on Winzler & Kelly's design of wetlands restoration work on Giacomini dairy land near Tomales Bay, the National Park Services is calling on volunteers to come help plant vegetation on the newly completed worksite.

The event will be held Nov. 13 from 11 a.m. to 2 p.m. Meet at the property gate at Fifth and C streets in Point Reyes Station. For details, visit RSVP to


Submit items for this column to Jeff Quackenbush at, 707-521-4256 or fax 707-521-5292.