JTAC Presentation

Second Generation ATAD

March 25^th, 2010

Second Generation ATAD (Autothermal Thermophilic Aerobic Digestion) has evolved to produce a superior digested residual. Small  process footprint, a digested cake that de-waters well with less polymer feed, 70+ % VS destruction, 60% COD destruction, and 50 % solids reduction, allows downstream equipment to be down sized saving the end-user money.  Producing class A biosolids turns a potential solid waste disposal problem into a usable (and green!) end product that can generate revenue and increase awareness of the positive aspects that ATAD brings to the community. Previous issues with first generation ATAD like odor, aeration, foam, and system control have been resolved with this new design. This improved technology has finally made its way to Colorado where Tetra Tech, Inc. has designed the first two installations for Eagle River Water & sanitation District and the City of Fruita. The presentation will be given by Steve Tamburini and Bob Orsatti from Tetra Tech, Inc.

The luncheon will be held in the meeting room of the REI Store, 1416 Platte Street, in downtown Denver. From I-25 heading north, take the 23rd Ave exit, veer to the right onto Water St, which turns into Platte St. REI is on the right just beyond the underpass. From I-25 heading south, take the 20th St exit, turn right onto 20th St for a very short distance and then merge to the left onto Central St; turn left on 15th St, and then turn right onto Platte St.. REI is on the left. Please park in the underground parking lot, which is accessed through the surface lot on the south side of the building. Note: REI Denver is also a short walk from the Union Station Light Rail stop.

Training Units (TU’s) are back! The JTAC is pleased to offer TU credit for attendance at our luncheons. Be sure to ask for a certificate when you check in at the luncheon.

Luncheon check-in will be from 11:30 am to noon, after which time the presentation will begin. Registration fees are $20 for AWWA or WEF members, $25 for nonmembers, and $15 for Students. Please make note of this and pay at the door either by cash or check (make checks payable to “RMSAWWA”). Registration is required and may be done by email, no later than the end of the day on Tuesday, March 23^rd, at the following address: jtac@ch2m.com. When registering, please provide: name, affiliation, and the number of people for whom you are reserving. You will receive an email confirmation for your reservation. If you have not received confirmation by Wednesday morning March 24^th, please call Barb Osmer at 720.286.0778, or Steve Polson at 720.286.5376 to confirm your reservation. If you do not receive a confirmation reply e-mail, you will likely not have a lunch when you arrive. Please make note of this if you have someone else make your reservation.

Do not call in lieu of using the e-mail registration, only if you do not receive confirmation. If you make a reservation and don't show or cancel by noon on Wednesday, March 24^th, you will be responsible for the cost of your lunch, please send a check to cover the cost of your lunch (made out to “RMSAWWA”) to:

Steve Polson

CH2M HILL

9193 S. Jamaica St.