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The State Archives of North Carolina, officially the North Carolina Division of Archives and Records, is a division of North Carolina state government responsible for collecting, preserving, and providing public access to historically significant archival materials relating to North Carolina, and responsible for providing guidance on the preservation and management of public government records ...
The river drains more than 130 square miles (340 km 2) in parts of three Washington counties: Skamania, Lewis, and Cowlitz. As with most other parts of the Toutle River and Cowlitz River systems, the upper part of the Green River was heavily affected by the 1980 eruption of Mount St. Helens.
A septic drain field, a septic tank, and associated piping compose a septic system. The drain field typically consists of an arrangement of trenches containing perforated pipes and porous material (often gravel) covered by a layer of soil to prevent animals (and surface runoff) from reaching the wastewater distributed within those trenches. [1]
Effluent sewer systems, also called septic tank effluent gravity (STEG), solids-free sewer (SFS), or septic tank effluent drainage (STED) systems, have septic tanks that collect sewage from residences and businesses, and the liquid fraction of sewage that comes out of the tank is conveyed to a downstream receiving body such as either a ...
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It is the principal city of the Longview, Washington Metropolitan Statistical Area, which encompasses all of Cowlitz County. Longview's population was 37,818 at the time of the 2020 census, [3] making it the most populous city in Cowlitz County. The city is located in southwestern Washington, at the junction of the Cowlitz and Columbia rivers.
The aeration stage and the disinfecting stage are the primary differences from a traditional septic system; in fact, an aerobic treatment system can be used as a secondary treatment for septic tank effluent. [1] These stages increase the initial cost of the aerobic system, and also the maintenance requirements over the passive septic system.
A septic tank is an underground chamber made of concrete, fiberglass, or plastic through which domestic wastewater flows for basic sewage treatment. [2] Settling and anaerobic digestion processes reduce solids and organics, but the treatment efficiency is only moderate (referred to as "primary treatment"). [2]