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Redmond residents and businesses east of the Sammamish River get
their drinking water from wells operated by the City. The wells are
susceptible to contamination because they draw groundwater up from a
shallow aquifer located directly beneath the City. The City enacted the
Wellhead Protection Ordinance to protect our drinking water resource. If
you live or conduct business in Wellhead Protection Zones 1, 2
or 3 then the following Ordinance requirements may affect you.
Are you planning to build, improve, move or change your facility use?
If you are contemplating a move, construction or change to a current
use, please consider that new development, redevelopment and some
existing activities will have to meet new standards for:
- Secondary containment of hazardous materials
- Vehicle fueling and maintenance areas
- Containment in loading and unloading areas
- Stormwater infiltration systems, and
- Protection standards during construction
You will likely need to prepare a Critical Areas Report to
determine the potential for your project to impact critical
resources.
Certain new activities may be prohibited in Wellhead Protection
Zones 1 & 2, such as:
- Dry cleaning with perchlorethylene,
- Chemical and pharmaceutical manufacturing, and
- Mobile fleet fueling
These are just a few of the standards and restrictions that
must be considered; please see the Ordinance for a complete list
of Performance Standards RMC 13.07.100 and RCDG 20D.140.50-040
and Prohibited Activities RCDG 20D.140.50-030. Go to
www.redmond.gov/groundwater
and click on Ordinance in the right column.
Do you have hazardous or deleterious materials
at your facility?
Secondary containment helps to prevent contaminants from impacting
the soil and groundwater. You may be required to use secondary
containment for hazardous materials in aggregate quantities equal to or
greater than 20 gallons liquid or 200 pounds solid. Facilities located
within Wellhead Protection Zones1 and 2 will be required to provide
secondary containment or equivalent Best Management Practices by
October 2008. To learn more about these requirements see RCDG
20D.140.50-040 (Ordinance).
Do you have a stormwater system that
infiltrates to the ground?
New stormwater systems will need to meet the requirements of the
City's
2007
Stormwater Technical Notebook.
Existing facilities within Wellhead
Protection Zones 1 & 2 that infiltrate their stormwater may pose a risk
to groundwater. The Ordinance requires existing stormwater infiltration
systems to be inspected and certified by a State registered engineer. Existing and new underground injection wells (drywells, french drains or perforated pipe systems, that place stormwater into the
ground) must be registered with the State. To learn more about the
stormwater infiltration requirements see the
Stormwater Infiltration page
on this site.
Will your project require placement of over 10 cubic
yards of fill material?
The City requires that fill material placed in Wellhead Protection
Zones 1 & 2 meet State Soil Cleanup Standards. Submit laboratory
analysis or proof of the clean source to Public Works prior to placement
of over 10 cubic yards of fill. To learn more about these requirements
see RMC 15.24.095 (Ordinance).
Are you conducting geotechnical
or environmental work that requires drilling? Will you be installing a
well or cathodic protection system?
Boring and well completion logs must be submitted to the Wellhead
Protection Program within 60 days of well completion or decommissioning.
The City has specific requirements for all of these related activities;
for more information see RMC 15.24.095 (Ordinance).
Have you experienced the
unfortunate event of a spill or release of hazardous materials?
You are required to promptly clean it up, provide notification to the
City's Wellhead Protection Program at 425-556-2825 and call the State
and/or Federal spill hotlines at 1-800-258-5990 (Washington Emergency
Management Division) or 1-800-424-8802 (National Response).
Are you monitoring or
cleaning up a site?
Please provide the City with periodic reports so that we may keep
apprised of our groundwater quality. We also have groundwater data that
may be helpful to you in your project. Once your site has been
cleaned-up and you seek closure from the Washington Dept. of Ecology or
US EPA, you will be required to provide a copy of the same notification
of site closure to the Wellhead Protection Program.
Does your facility have elevators or
hydraulic lifts?
Hydraulic tubing, piping, tanks, cylinders and the fluids within them
extend beneath the lift 10 to 50 feet below the ground. If there is a
leak in one of these components it could inject hazardous fluids
directly into the groundwater. Facilities located in Wellhead Protection
Zones 1 & 2 need to inspect their elevators and hydraulic lift
cylinders for leakage and fluid loss and report the results to the City.
Installation/reinstallation of new elevators and hydraulic lift
cylinders must meet new construction standards. See RMC 15.24.095 (Ordinance).
New and redeveloping facilities in Wellhead Protection Zones 1 & 2 will
be required to implement BMPs to prevent pollution and protect water
quality and quantity. Beginning in October 2008, existing facilities
will also have to meet these same requirements. Information regarding
BMPs can be found in the Dept of Ecology 2005 Western Washington
Stormwater Manual
http://www.ecy.wa.gov/pubs/0510029.pdf.
Full text of the Wellhead Protection Ordinance can be found at
www.redmond.gov/groundwater click on Ordinance in the right column
or in the Redmond Municipal Code and Redmond Community Development Guide
online at
http://www.codepublishing.com/WA/redmond.html.
If you are a new business to the City of Redmond and your
business will be located in Wellhead Protection Zone 1, 2, or 3 you will
be required to submit a Hazardous Materials Questionnaire. Please
click on the link in the left hand column for further information.
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