Land managers need to manage their lands for the products
they provide. Thus, farmers manage lands
for crops. Duck club for waterfowl.
Wetlands for habitat. But all
types of land uses are under increased regulatory pressure to reduce nonpoint
water quality effects. Bachand &
Associates is active and progressive in development of innovative and
applicable cultural and structural management practices to reduce water quality
impacts. We begin with understanding the systems through interviewing the
landowners, assessing the current system design and practices, and reviewing
the water quality and hydrologic goals. We
then work to develop effective and pragmatic approaches that will integrate and
leverage current management practices to target constituents of concern.
Water Resource Investigations
Bachand & Associates has expertise for investigating water
resources challenges from the initial study design through data collection,
analyses and reporting. We have led
investigations of hydrology and the fate and transport of various constituents
of concern including nutrients, organic carbon, disinfection byproduct
precursors, metals and mercury for projects of various scales from agricultural
fields to watersheds. We work in a broad
range of semi-natural systems including agriculture, wetlands and
Stormwater and Wastewater Treatment Wetlands
Bachand & Associates is an innovator in enhancing
treatment wetland performance efficiencies and applicability. We identify the opportunities and constraints
of wetlands to address specific water quality and hydrologic concerns, and
recommend science based solutions targeting constituents of concern. Important in optimizing these systems is
understanding their interactions with other components in the treatment train
and understanding underlying processes.
Principals at Bachand & Associates have worked on
studies to assess methods to improve treatment wetland performance: integration
with coagulation systems, improved hydrologic designs and use of adsorptive
media. These approaches are promising
for improving the performance of wetlands to target specific treatments. We have several publications on these
technologies and in 2004 were part of a California State Board Conference on Advanced Treatment Tchnologies for Stormwater.
Bachand & Associates has worked closely with Wetlands and Water Resources and others on wetland restoration projects. We have been involved with a comprehensive feasibility study for the South San Francisco Bay Salt Ponds, efforts to assess the impacts of restoration of wetland processes, and impacts of wetland restoration to greenhouse gas productions and the potential for carbon farming. We have collaborated with Wetlands and Water Resources on implementation of a number of restorations in the North San Francisco Bay and the Sacramento San Joaquin Delta. On these projects we have provided technical support related to water quality, engineering economics and hydrology.
Bachand & Associates has led efforts to understand and
quantify aquatic toxicity resulting from coagulation treatment processes. We have worked closely with the University of California Aquatic Toxicity Lab in the
design and implementation of these studies.
We have also supported assessments on the effects of mercury in wetlands
and other aquatic environments being conducted by the USGS.
Geotechnical and Groundwater Services
Bachand & Associates has been involved in geotechnical
assessments related to levee stability and predicted subsidence on peat soils
and bay muds. Bachand & Associates
has also conducted investigation of shallow groundwater response in
agricultural systems. Most recently,
Bachand & Associates has teamed with the USDA, UC Davis, Sustainable
Conservation and Terranova Ranch, Inc. to develop on-farm practices to capture
flood flows from the Kings River to decrease
downstream flood risks, and recharge and protect groundwater resources.