Olympic View Landfill Leachate Lagoon No Reservoir Report

Last Updated: December 15, 2025

Olympic View Landfill Leachate Lagoon No, located in Kitsap, Washington, is a privately owned offstream structure regulated by the Washington Dept of Ecology.


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Summary

Completed in 1997, this earth-type lagoon stands at a hydraulic height of 24 feet and has a structural height of 21.3 feet, with a storage capacity of 13 acre-feet. Despite its small surface area of 1 acre, the lagoon serves a crucial purpose in managing leachate from the landfill, with a maximum discharge rate of 3 cubic feet per second.

This lagoon poses a high hazard potential, but as of the last inspection in June 2018, its condition was deemed satisfactory. The emergency action plan (EAP) for the site was last revised in January 2020, ensuring preparedness for any potential risks. While there are no inundation maps or detailed risk assessments available for this structure, its compliance with state regulations and regular inspections indicate a commitment to safety and environmental protection. With a designated inspection frequency of 5 years, the Olympic View Landfill Leachate Lagoon No remains an essential component of waste management infrastructure in the region.

For water resource and climate enthusiasts, the Olympic View Landfill Leachate Lagoon No serves as a prime example of how innovative engineering solutions can address environmental challenges. Its efficient design and operational effectiveness underscore the importance of proper leachate management in landfill facilities. By adhering to state regulations and maintaining a robust emergency response plan, this structure showcases a proactive approach to mitigating hazards and safeguarding local water resources. As we continue to address climate change and its impacts on water quality, structures like the Olympic View Lagoon play a vital role in protecting our ecosystems and communities.

Year Completed

1997

River Or Stream

Offstream

Primary Dam Type

Earth

Surface Area

1

Hydraulic Height

24

Nid Storage

13

Structural Height

21.3

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

24
       
Seasonal Comparison

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Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.