A feasibly study to solve the problem of failing septic systems in the San Geronimo Valley in Woodacre Flats including an alternative for a new community-based septic system has begun. The county will oversee the project and on Tuesday accepted a contract with Questa Engineering for the study. Read more...
Dave Anderson, a woodacre resident and a member of the Woodacre Flats Wastewater Group (WFWG) said the community group has been trying to tackle the problem of leaky septic systems the in the “flats” of Woodacre for three years.
According to a Tomales Bay Watershed Council study as well as an independent and anonymous survey by Michael Treinen, a very high percentage of septic systems in Woodacre fail. The independent survey of 43 homes in Woodacre found that all had some sort of problem with their systems- from modest soil problems to overflowing tanks. TBWC also found a high amount of detergents in the watershed that accumulates in higher concentrations as it drifts downstream.
“We want to have a community based system that will eliminate failures in the valley’s septic systems,” said Anderson.
The flat areas of Woodacre receive a lot of runoff from the ridges, which can cause overflows in the systems. “We are trying to find a place to set up a pond and a septic system process much like what they have on the east shore of Tomales Bay. We were inspired by the Tomales Bay project; they have a successful program.”
The meeting in Woodacre Tuesday night informed the community of the study which will cover different alternatives: new on-site systems, new technology for on- site systems and the possibility of a community system. The study will also detail the geology, hydrology, existing development and infrastructure of the “Flats” and make recommendations for the best solutions at the least possible cost.
Benefits of a community project not only include protecting the watershed from pollutants but improved property values and cost savings via grants. In Marshall, “hooking up” to the new system cost approximately $40,000 per home. However, homeowners paid $19,000 because of offsets from grants. Yearly costs for Marshall residents are also less than individual systems.
The question for many is where to locate a community system and what effect a community system might have on development in the area. The fear is that a community septic system off-site might open up development rights to landowners with undeveloped lots near streams, unable to obtain septic permits for new homes. Also in question is an option for homeowners to expand the footprint of their homes with new bedrooms once a community system opens up the option for more septic capacity.
Liza Crosse, aide to Supervisor Steve Kinsey said the option of undeveloped parcels obtaining septic permit via a new community system will not be possible. “ That will be out of the question for undeveloped parcels,” said Crosse.
Should Woodacre decide to move forward with a community project, the feasibility study will lay the ground work for an EIR, project design, and construction for a project. It will also provide information to write grants to help fund the project in the future.
Currently, 36 property owners have each contributed $300, raising over $11,000 with a matching grant from county and the EPA to provide enough money for the feasibility study.
The meeting alerted homeowners the need for the consultants to have permission to access private septic systems anonymously during the study free of charge.
The timeframe for the study is expected to last 10 to 11 months.