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== Early Wastewater Treatment ==
== Early Wastewater Treatment ==


In 1949, the first wastewater treatment plant was constructed by the [http://www.arcatacityhall.org/ City of Arcata].  The solids from the wastewater were removed with [[Primary treatment]] and then the effluent was flushed into Humboldt Bay without chlorination.  Oxidation ponds were constructed in 1957 that removed the suspended solids and biological oxygen demand (the measure of the quantity of oxygen consumed by microorganisms during the decomposition of organic matter) from the effluent and in 1966 [[Arcata Marsh Chlorination|chlorination]] and de-chlorination disinfected the effluent before it was released into Humboldt Bay.
In 1949, the first wastewater treatment plant was constructed by the [http://www.arcatacityhall.org/ City of Arcata].  The solids from the wastewater were removed with [[primary treatment]] and then the effluent was flushed into Humboldt Bay without chlorination.  Oxidation ponds were constructed in 1957 that removed the suspended solids and biological oxygen demand (the measure of the quantity of oxygen consumed by microorganisms during the decomposition of organic matter) from the effluent and in 1966 [[Arcata Marsh Chlorination|chlorination]] and de-chlorination disinfected the effluent before it was released into Humboldt Bay.


==The Aquaculture Project  ==
==The Aquaculture Project  ==

Revision as of 17:07, 7 May 2008

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The Wiyot People

The Wiyot people were the original inhabitants of Humboldt Bay. They lived off the land's resources; they fished for salmon (Figure 1) and gathered roots for medicine, baskets and food for thousands of years. Pre-1850, there were approximatly 1,500-2,000 Wiyot people living on Humboldt Bay however, the European settlers brought with them death and disease. In 1860, the Wiyot suffered a great loss. The tribe had gathered on a small island in Humboldt Bay to prepare for sacred ceramonies, when miners from a nearby town stormed the island, it is estimated that 200 Wiyot people survived the massacare.

Figure 1. Wiyot Fisherman

Early Settlement

In the 1860’s, when European settlers first made their way to Humboldt Bay, they saw the vast amounts of resources, and the potential for a timber industry (Figure 2). The region was developed to facilitate the production and export of timber, a wharf and railroad connected Arcata to the shipping channel, lumber mills were constructed along the bay to process the timber and the marshes were drained and diked for agricultural development.

Figure 2 The Sequoia's Last Stand. Picture courtesy of the Fortuna Depot Museum.

Early Wastewater Treatment

In 1949, the first wastewater treatment plant was constructed by the City of Arcata. The solids from the wastewater were removed with primary treatment and then the effluent was flushed into Humboldt Bay without chlorination. Oxidation ponds were constructed in 1957 that removed the suspended solids and biological oxygen demand (the measure of the quantity of oxygen consumed by microorganisms during the decomposition of organic matter) from the effluent and in 1966 chlorination and de-chlorination disinfected the effluent before it was released into Humboldt Bay.

The Aquaculture Project

In 1969, Dr. George Allen, (Figure 3) a professor of fisheries biology from Humboldt State University (HSU), began experimenting with raising salmon with water from the oxidation ponds of the wastewater treatment plant. In 1971 he created the Arcata Wastewater Aquaculture Project, a successful operation that reared and released salmonids into the bay and local streams. He saw the wastewater as an untapped resource that could be beneficial and useful as opposed to discharged without use.

Figure 3. Dr. George Allen.

The Clean Water Act and Humboldt Bay Wastewater Authority

In 1972, the Clean Water Act would change how wastewater treatment plants across the nation would deal with their discharge. Administered by the State Water Resources Control Board (SWRCB), the Bays and Estuaries Policy prohibited the discharge of treated wastewater into any enclosed bay or estuary unless the discharger could demonstrate “enhancement of the receiving waters.”[1] In 1974 the Humboldt Bay Wastewater Authority (HBWA) was formed and in 1975 a regional treatment facility was proposed as the solution to the new policy. The regional facility would cost an estimated $25 million (not adjusted for inflation) and would connect the wastewater of the surrounding communities of Humboldt Bay via pipeline running along highway 101 and out the mouth of Humboldt Bay to the ocean. The planned treatment facility was energy intensive and subject to damage due to earthquakes, boating accidents, and shifting sea bottoms during winter storms. The City of Arcata opposed the regional treatment plant because they feared the newly installed pipelines would open up the city to additional development of their agriculture lands; there would also be the loss of the investment capital in their existing treatment facilities and the loss of wastewater resources for George Allen's fish hatchery project. The citizens and City Council members of Arcata wanted to find an alternative approach to the regional treatment plant and suggested a local system that relied on constructed freshwater wetlands that used the natural biological processes to treat the wastewater (Figure 4). The city of Arcata faced opposition from the Humboldt Bay oyster growers who feared the constructed wetland system would allow the release of pathogens into the bay and would harm their businesses.

Figure 4 Wading bird

An Natural System for Wastewater

In 1977, a Task Force consisting of HSU professors Dr. George Allen and Dr. Bob Gearheart, City Councilman Dan Hauser, and Public Works Director Frank Klopp formed to further develop the treatment and enhancement marsh idea and challenged the proposed regional treatment plant. The Task Force took the marsh idea to the State and Regional Water Quality Boards and demonstrated that it would be a viable alternative solution to the problem. In 1979 the SWRCB allowed Arcata to establish a two-year pilot program to treat 10% of Arcata’s wastewater. [2] From 1979-1982, Dr. Bob Gearheart conducted experiments with partially treated wastewater and the natural processes of wetland ecosystems, and demonstrated that constructed freshwater wetlands could be used to treat Arcata’s wastewater and at the same time enhance biological productivity of the wetland environment into which treated wastewater was discharged [3] (Figure 5).

Figure 5. Sunset over Arcata Marsh

Arcata Marsh and Wildlife Sanctuary

In 1981, the California Coastal Conservancy, a state agency concerned with restoration of coastal resources, funded the purchase and restoration of three wetland marshes. The Arcata Marsh and Wildlife Sanctuary was dedicated on July 3, 1981. In 1983, Arcata was authorized to release wastewater into the enhancement marshes by the SWRCB. With the addition of the Butcher's Slough Marsh, a restored fresh water wetland, funded by the Coastal Conservancy in 1986, the Arcata Marsh and Wildlife Sanctuary now totaled 154 acres and the integrated wetland wastewater treatment system was complete.

Current Projects

In 1987, the Arcata Marsh and Wildlife Sanctuary received the Ford Foundation’s “Innovations in Government” award and $100,000, which enabled the construction of the Arcata Marsh Interpretive Center. In 1998, the City received funds from the Environmental Enhancement and Mitigation Program and the Wildlife Conservation Board to purchase 75 acres of agricultural lands lying to the west of the Sanctuary. Plans for the McDaniel Slough wetland enhancement project are underway to cooperatively restore and enhance up to 250 acres of the former tidelands. Construction is expected to be completed in 2010. [4]

References

  1. The City of Arcata, California Environmental Services: Marsh and Wildlife Sanctuary
  2. [2]
  3. [3]
  4. The City of Arcata, California Environmental Services: Marsh and Wildlife Sanctuary


1. The City of Arcata, California Environmental Services: Marsh and Wildlife Sanctuary

2. Arcata Marsh and Wildlife Sanctuary, Map and Guide. April 1994

3. A Natural System for Wastewater Reclamation and Resource Enhancement. Arcata, California. Friends of Arcata Marsh.

Pictures:

Figure 1. Wiyot Fisherman Public Domain:
http://memory.loc.gov/cgi-bin/displayPhoto.pl?path=/award/iencurt/ct13&topImages=ct13013r.jpg&topLinks=ct13013v.jpg&m856s=$fct13013&displayProfile=1


Figure 3 http://www.humboldt.edu/~fish/programs/wastewaterhistory.html

Figure 4 “Wading Bird” courtesy Dustin Poppendieck

Figure 5 “Sunset over Arcata Marsh” courtesy Dustin Poppendieck

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