ASCEFuture Dates for Your Calendar

Tacoma-Olympia Section of the ASCE
Future Dates for Your Calendar

Date Location / Event

Wednesday
December 10, 2008
Social: 5:30pm
Dinner: 6:00pm
Program: 6:30pm

Menu: Gala Buffet
Cost: $30/person
spouses & guests welcome;

students half/price

Section Dinner Meeting with Seattle Section / La Quinta Inn

Capitol Lake / Deschutes Estuary Restoration Study

Ecology is completing a water quality study of Budd Inlet and Capitol Lake that uses a combination of data collection and water quality model development. Both water bodies do not meet the water quality standards, and the Clean Water Act requires that a Total Maximum Daily Load study be conducted to quantify how much nutrients need to be reduced within the system.

Capitol Lake in Olympia drains to Budd Inlet via a complex dam/inverted siphon structure. The Washington State Department of General Administration is considering removal of this hydraulic structure to circumvent expensive dredging of sediments that accumulates in the lake. Ecology evaluated the impacts of dam removal in terms of changes in DO in Budd Inlet and Capitol Lake. A three-dimensional hydrodynamic-water quality model of Budd Inlet (previously completed by LOTT) was connected to a new 3-D model of Capitol Lake and calibrated to observed data. Several scenarios of point and non-point sources at different nutrient and organic loads were evaluated with and without the dam to evaluate the impact on dissolved oxygen. The estuary option (i.e. without the dam) appears to provide decreased incidents of DO excursions of water quality standard for both the Budd Inlet and Capitol Lake areas.

Speakers: Mindy Roberts, P.E., Anise Ahmed, P.E.

Mindy Roberts received a BS in Civil Engineering from the University of California, Berkeley in 1989, and a MS in Civil and Oceanographic Engineering from the Massachusetts Institute of Technology and Woods Hole Oceanographic Institution in 1992. She earned a Ph.D. in Civil and Environmental Engineering from the University of Washington in 2007. She is a registered professional engineer in the State of Washington and Commonwealth of Massachusetts. She has worked as an environmental engineer at the Department of Ecology since 2000.

Anise Ahmed is an environmental engineer with Washington State Department of Ecology. He received his BS in Civil Engineering from Bangladesh University of Engineering and Technology in 1980. He earned his MS in Environmental Engineering from Wayne State University in 1985 and his Ph.D. in Environmental Engineering from Utah State University in 1990. He is a registered professional engineer in the state of Washington.

RSVP: Contact Kay Hoke at khoke@cityoftacoma.org or call 253.591.5760 by Friday, Dec. 5.

Note:

Section Meetings are open and held once a month, September through May. Meetings are generally held on the second Tuesday of the month. Locations alternate between Tacoma and Lacey, and times vary between lunch and dinner meetings.

Local Board Meetings are open and generally held the first Monday of the month at 5:30pm. Locations vary. Please check this calendar, or contact the president for confirmation.

Return to Tacoma-Olympia Section top page.

revised by RES on December 2, 2008 @ 10:50 am

Date	Location / Event

Wednesday December 10, 2008 Social: 5:30pm Dinner: 6:00pm Program: 6:30pm Menu: Gala Buffet Cost: $30/person spouses & guests welcome; students half/price	Section Dinner Meeting with Seattle Section / La Quinta Inn Capitol Lake / Deschutes Estuary Restoration Study Ecology is completing a water quality study of Budd Inlet and Capitol Lake that uses a combination of data collection and water quality model development. Both water bodies do not meet the water quality standards, and the Clean Water Act requires that a Total Maximum Daily Load study be conducted to quantify how much nutrients need to be reduced within the system. Capitol Lake in Olympia drains to Budd Inlet via a complex dam/inverted siphon structure. The Washington State Department of General Administration is considering removal of this hydraulic structure to circumvent expensive dredging of sediments that accumulates in the lake. Ecology evaluated the impacts of dam removal in terms of changes in DO in Budd Inlet and Capitol Lake. A three-dimensional hydrodynamic-water quality model of Budd Inlet (previously completed by LOTT) was connected to a new 3-D model of Capitol Lake and calibrated to observed data. Several scenarios of point and non-point sources at different nutrient and organic loads were evaluated with and without the dam to evaluate the impact on dissolved oxygen. The estuary option (i.e. without the dam) appears to provide decreased incidents of DO excursions of water quality standard for both the Budd Inlet and Capitol Lake areas. Speakers: Mindy Roberts, P.E., Anise Ahmed, P.E. Mindy Roberts received a BS in Civil Engineering from the University of California, Berkeley in 1989, and a MS in Civil and Oceanographic Engineering from the Massachusetts Institute of Technology and Woods Hole Oceanographic Institution in 1992. She earned a Ph.D. in Civil and Environmental Engineering from the University of Washington in 2007. She is a registered professional engineer in the State of Washington and Commonwealth of Massachusetts. She has worked as an environmental engineer at the Department of Ecology since 2000. Anise Ahmed is an environmental engineer with Washington State Department of Ecology. He received his BS in Civil Engineering from Bangladesh University of Engineering and Technology in 1980. He earned his MS in Environmental Engineering from Wayne State University in 1985 and his Ph.D. in Environmental Engineering from Utah State University in 1990. He is a registered professional engineer in the state of Washington. RSVP: Contact Kay Hoke at khoke@cityoftacoma.org or call 253.591.5760 by Friday, Dec. 5.


Note:	Section Meetings are open and held once a month, September through May. Meetings are generally held on the second Tuesday of the month. Locations alternate between Tacoma and Lacey, and times vary between lunch and dinner meetings. Local Board Meetings are open and generally held the first Monday of the month at 5:30pm. Locations vary. Please check this calendar, or contact the president for confirmation.