Woodland Creek Reports
Reports from Pacific Groundwater Group and Brown & Caldwell
"Current Conditions Report"
This report summarizes where and how pollutants enter Woodland Creek and groundwater.
Future Pollutant Load Estimates"
This report lists possible responses and groups them into "low," "medium," and "high" categories.
"Woodland Creek Pollutant Reduction Plan"
This document recommends pursuing the "medium" option. The medium option calls for providing public sewer service to certain densely built neighborhoods that have high rates of septic system failures. The neighborhoods were prioritized to reduce fecal coliform loads to Woodland Creek first, followed by reductions of nitrate discharges to groundwater. They are:
Woodland Creek Estates area (Woodland Creek Estates and Covington Place)
The plan also strongly recommended sewering the Midway neighborhood because of high septic system failure rates.
The medium option also would involve installing swales and improved drywells to help remove more pollutants from stormwater in the Tanglewilde/Martin Way area, where stormwater is piped directly into Woodland Creek. New development in the area would also be required to install bioswales.
Note: Thurston county is NOT pursuing the idea of sewering the Tanglewilde neighborhood. The county is only pursuing the stormwater options.
Also see the Henderson Watershed Protection Area septic system maintenance/certification program.
Other documents related to Woodland Creek
Septic System Inventory for Tanglewilde, Thompson Place, and
This report to LOTT WasteWater Alliance presents the findings from an inventory of septic systems in the three subdivisions. The inventory was designed to determine age and types of septic systems in these three neighborhoods, determine the record of repair for septic systems, note the soil type on the permits and compare them with soil conditions, and determine reserve area available on parcels to make on-site repairs. (848 KB dated December 1998)
North Woodland Creek Water System Nitrate Study
This report provides background on the high nitrate levels that lead to the closure of the "North Woodland Creek Water System" in 1997. Three wells were closed due to high nitrate concentrations, and the neighborhood was ultimately connected to Lacey water service. (2.1 MB PDF circa late 1990s).
DNA Test Results for Henderson Inlet
This external Web page shows the findings of a pollution-source DNA study that generally identifies what types of animals (humans as well) are contributing fecal bacteria to Henderson Inlet (external link to a report dated 1999-2001).
Henderson Inlet Watershed Implementation Program
This report provides sampling data that indicates how fecal bacteria enters Henderson Inlet. It identifies Woodland Creek as the main distribution point of fecal bacteria. (5.2 MB PDF dated December 2002)
Woodland Creek Pollution Source Investigation
This report finds that runoff containing high levels of fecal bacteria is being discharged directly into Woodland Creek through the Woodland Creek Estates stormwater system. The sources of the fecal bacteria are human, pet, and wildlife waste (157 KB report dated June 2003).
Ecology Henderson Inlet TMDL study
This report takes a comprehensive look at water quality issues for the Henderson Inlet watershed. The study found widespread fecal coliform bacterial contamination, which threatens shellfish harvesting. Total maximum daily load allocations are established, and recommended clean-up actions are prioritized. (external link, study dated March 2006)
Staff contact: Larry Schaffner (360) 754-4106 E-mail: email@example.com
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