Talk:Arcata Marsh Overview
The following map is interactive, you can move around and zoom by clicking on the map and buttons. You can add pointer information by clicking edit and adding a location (see Help:Maps for help on editing the map). When Google reshoots their maps for this region when it is less foggy, maybe include this image somewhere on the overview or on a separate map page.
- Done. See main page. --Lonny 01:11, 23 November 2011 (PST)
- Map still seems to interfere with References table. Is there a plugin update available? ---- Joey 18:26, 23 November 2011 (PST)
Points of Interest
The following points of interest are ordered to follow the flow of wastewater through Arcata's integrated wetland wastewater treatment plant.
1. Primary Treatment Plant (the "headworks"): Raw sewage enters the treatment plant at this point. It treats up to 5 Million Gallons a Day (MGD). An additional 14 MGD can bypass primary treatment and flow directly to the oxidation ponds during storms.
2. Oxidation Ponds: These 49 acres of ponds, built in the late 1950's, treat Arcata's wastewater to secondary standards. Time, water, plants, bacteria, and fungi purify the wastewater to secondary standards.
Arcata's wastewater circulates through a six-marsh system before it is released into the Bay. The natural processes occurring in the marshes simultaneously purify the wastewater by removing excess nutrients, and "feed" the marsh plants with water high in nitrogen-rich organic matter. Nutrients are taken up by the plants and thus removed from the wastewater. The roots and stems of the plants also clean the water by forming a dense netlike filter that removes large quantities of suspended solid materials. Algae, fungi, bacteria, and micro-organisms attached to the roots of these plants feed on these solids. All treatment marshes were planted with Humboldt Bay native Hardstem Bulrush (scirpus acutus) as well as a variety of other aquatic plants. This nutrient-rich habitat attracts thousands of birds, over 200 species, to the sanctuary. These ponds are:
3. Treatment Marshes: These three, two-acre marshes were completed between 1987-1990.
4. George Allen Marsh: Completed in 1981, this marsh was built on an abandoned log deck.
5. Robert Gearheart Marsh: Completed in 1981, this marsh was pasture land.
6. Dan Hauser Marsh: This is the final marsh irrigated with treated wastewater. From here the water is returned to the treatment plant.