Minimum lot area: 9,650 square feet.

Minimum lot width: 70 feet.

Minimum lot area: 14,400 square feet.

Minimum lot width: 100 feet.

Minimum lot area: 7,200 square feet.

Minimum lot width: 60 feet.

Minimum lot area: 10,800 square feet.

Minimum lot width: 60 feet.

Total square footage is not to exceed 5,000 square feet. Athletic clubs and grocery or convenience stores may have a total square footage of up to 10,000 square feet by issuance of a conditional use permit.

All merchandise and material storage must be fully contained within buildings unless approved in accordance with Chapter 12.40 CMC, Public Property Use Permit.

All lighting fixtures must be shielded to prevent light trespassing outside the property boundaries and to minimize up-light spill and glare.

Flashing lights are prohibited with the exception of holiday and special occasion accent lights.

Color temperature: All on-site exterior lighting shall utilize light sources not to exceed 2,700 kelvin.

Differentiation shall be provided between floors which may include porches, balconies, awnings, trellises, a change in material, recesses, projections, or similar treatment.

Facades greater than 50 feet in length shall incorporate recesses and projections with a minimum two-foot differentiation along at least 20 percent of the length of the facade.

Pitched roofs shall incorporate eaves and contain two or more roof planes. Flat roofs shall provide a decorative cornice at the top of the roof. Rooftop mechanical equipment shall be screened from public view at ground level by incorporation of false roofs, parapets, or by fencing, lattice, or similar material (see Figure 17.30.030.3).

Vegetation such as trees, shrubs, groundcover and/or vines adjacent to the wall surface.

Artwork, such as a mural, trellis/vine panels or bas-relief sculpture.

Architectural detailing, reveals, contrasting materials or similar treatment.

Local Species of Importance.

The nonfunctioning buffer areas occurred due to topographic breaks or a legally established road (not including logging roads), railroad, or other lineal facility, primary structure, or barrier established prior to January 13, 2026, that physically separates and impedes the biological and hydrological functions of a portion of the buffer.

Where physical separation is caused by a nonconforming primary structure established prior to January 13, 2026, any proposed expansions into a nonfunctioning buffer area shall be limited to the width of the structure, extending away from the critical area.

The applicant provides the planning department with sufficient information pursuant to this chapter, to determine whether the buffer performs any biological or hydrological function. The planning department may require concurrent technical review by a state or federal agency, or affected tribe.

Downed trees provide a significant amount of ecological function and wildlife habitat and therefore unintrusive trees must remain where they fell within the buffer.

The Critical Area is classified as a Category IV or a Category III wetland with a habitat score of 3-5 points.

There will be no net loss of functions and values of the Critical Area.

The Critical Area does not contain a breeding population of any native amphibian species.

There must be an immediate threat to life, public or private property, or an immediate threat of serious environmental degradation arising from a natural condition, or non-natural accident or incident;

The emergency response shall be confined to the action necessary to protect life or property from damage;

The scope of the emergency response must be limited to the work necessary to relieve the immediate threat; and

The emergency response applies only to the period of time in which the actual emergency exists.

Walkways and trails, provided that they are limited to minor crossings having no adverse impact on water quality. They should be generally parallel to the perimeter of the Critical Area, located only in the outer twenty-five percent (25%) of the Critical Area buffer area, and located to avoid removal of significant [as defined in ordinance], old growth, or mature trees. They should be limited to pervious surfaces no more than five (5) feet in width and designed for pedestrian use only. Raised boardwalks utilizing non-treated pilings may be acceptable.

The pre-violation structure, functions, and values of the affected Critical Area shall be restored.

The pre-violation soil types and configuration shall be restored to the extent practicable.

The Critical Area and buffers shall be replanted with native vegetation that replicates the pre-violation vegetation in species types, sizes, and densities.

Information demonstrating compliance with other applicable provisions of this Chapter shall be submitted to the Planning Department.

Except for seismic, volcanic, and mine hazard areas, all new construction of structures, facilities, utilities, access driveways and appurtenances shall be located outside of the critical area and the associated buffer unless otherwise permitted in this title;

New development may be permitted on legal lots containing wetlands or buffers, consistent with other applicable provisions of this title;

No new development or construction of structures, facilities, utilities, access driveways and appurtenances shall create a public safety risk, as determined by the approval authority;

Enhancement or restoration (mitigation) of the affected critical area or associated buffer shall be required to offset the impacts of the proposed development, as approved by the approval authority;

The development site shall be located away from the critical area or its buffer, to the furthest extent possible;

The applicant shall demonstrate that due to physical constraints (e.g., topography, soil conditions, or the site's configuration), another configuration would not allow the development to occur without intrusion or with less intrusion into the critical area or buffer than the proposal;

The location and scale of existing development on surrounding properties shall not be the basis for granting or determining the location, scale and impact of a single family use allowed under this section;

The encroachment into the critical area buffer shall be consistent with other requirements of this section for development on existing lots, requirements for a critical area review permit, and shall not have an adverse impact on species of concern, as determined by the approval authority;

Site development, including clearing, grading, construction of structures, utilities, related appurtenances, and landscaping shall occupy the minimum area necessary to accommodate the use;

Native tree and vegetation removal shall only be permitted to the minimum extent necessary to accommodate the proposed development, and shall not create a public safety risk;

A restoration plan consistent with this title for disturbed areas shall be submitted with the development application, and shall be completed prior to final occupancy or use;

Landscaping shall not extend more than 15 feet from the primary structure toward the important habitat or wetland;

Any new structures within a critical area buffer shall be sited to avoid the creation of hazard trees;

The approval authority may authorize use of additional area to the minimum extent necessary in a critical area buffer to accommodate a driveway, associated utilities, and/or an onsite sewage disposal system or well, consistent with other requirements of this title, only if there is no alternative; and

The use of this single-family residential exception shall not be a result of a self-created hardship such as subdividing the property, adjusting a boundary line, or other actions thereby creating the undevelopable conditions after July 24, 2012; and

All other development or construction of primary structures, accessory structures, and related appurtenances in the critical area and associated buffer shall conform to the provisions set forth herein.

The applicant shall be required to install a permanent fence along the boundary of the Critical Area buffer when adjacent activities could degrade the Critical Area or its buffer. Examples include domestic animal grazing, unauthorized access by humans or pets, etc.

Fencing installed as part of a proposed activity or as required in this Subsection shall be designed so as to not interfere with species migration, including fish runs, and shall be constructed in a manner that minimizes impacts to the Critical Area and associated habitat.

The written report shall include at a minimum:

The site plan sheet(s) shall include, at a minimum:

The written report shall be prepared by a qualified Critical Area professional and contain, at a minimum:

The scaled plan sheets shall contain, at a minimum:

Buffers need to be fully vegetated in order to be included in buffer area calculations. Lawns, walkways, driveways, paved areas, and mowed or developed areas will not be considered buffers or included in buffer area calculations when assessing whether adequate compensatory mitigation buffers have been provided.

The lost Critical Area provides minimal functions, and the proposed compensatory mitigation action(s) will provide equal or greater functions or will provide functions shown to be limited within a watershed through an existing watershed plan or a local or regional study that characterizes watershed processes; or

Out-of-kind replacement of Critical Area type or functions will best meet watershed goals formally identified by a watershed plan, such as replacement of historically diminished Critical Area types.

Restoration: The manipulation of the physical, chemical, or biological characteristics of a site with the goal of returning natural/historic functions and environmental processes to a former or degraded Critical Area. Restoration is divided into two categories:

Establishment (Creation): The manipulation of the physical, chemical, or biological characteristics of a site to develop a Critical Area on an upland where a Critical Area did not previously exist at an upland site. Establishment results in a gain in Critical Area and functions. An example activity could involve excavation of upland soils to elevations that will produce a Critical Area hydroperiod and hydric soils by intercepting groundwater, and in turn supports the growth of hydrophytic plant species.

Preservation (Protection/Maintenance). The removal of a threat to, or preventing the decline of, Critical Areas by an action in or near those Critical Areas. This term includes activities commonly associated with the protection and maintenance of Critical Areas through the implementation of appropriate legal and physical mechanisms such as recording conservation easements and providing structural protection like fences and signs. Preservation does not result in a gain of aquatic resource area or functions but may result in a gain in functions over the long term. Preservation of a Critical Area and associated buffer can be used only if:

Enhancement. The manipulation of the physical, chemical, or biological characteristics of a wetland to heighten, intensify, or improve specific wetland function(s). Enhancement is undertaken for specified purposes such as water quality improvement, flood water retention, or wildlife habitat. Enhancement results in the gain of selected Critical Area function(s) but may also lead to a decline in other Critical Area function(s). Enhancement does not result in a gain in Critical Area. Enhancement activities could include planting vegetation, controlling non-native or invasive species, and modifying site elevations to alter hydroperiods in existing Critical Areas.

The Planning Department will consider the following for approval of an alternative mitigation proposal:

The following criteria will be evaluated when determining whether on-site or off-site compensatory mitigation is ecologically preferable. When considering the location of mitigation, preference should be given to using programmatic approaches, such as a mitigation bank or an ILF program.

The Planning Department may authorize a one-time temporary delay in completing construction or installation of the compensatory mitigation when the applicant provides a written explanation from a qualified Critical Area professional as to the rationale for the delay. An appropriate rationale would include identification of the environmental conditions that could produce a high probability of failure or significant construction difficulties. For example, a project delay that creates conflicts with other regulatory requirements (fisheries, wildlife, stormwater, etc.) or installing plants should be delayed until the dormant season to ensure greater survival of installed materials. The delay shall not create or perpetuate hazardous conditions or environmental damage or degradation, and the delay shall not be injurious to the health, safety, or general welfare of the public. The request for the delay shall include a written justification that documents the environmental constraints that preclude timely implementation of the compensatory mitigation plan. The justification will be verified by the City of Colville who will issue a formal decision.

A description of the methodologies used to conduct the wetland delineations, wetland ratings, and impact analyses, including references.

For each wetland identified on site and within 250 feet of the project boundary, provide the completed wetland rating, per this Chapter; required buffers; hydrogeomorphic classification; wetland area based on the field delineation (area for on-site portion and estimate entire wetland area including off-site portions); Cowardin classifications; habitat elements; soil conditions based on site assessment and/or soil survey information; and to the extent possible, hydrologic information such as location and condition of inlets/outlets, estimated water depths within the wetland, and estimated hydroperiod patterns based on visual cues (e.g., algal mats, drift lines, flood debris, etc.). Provide area estimates, classifications, and ratings based on entire wetland units, not only the portion present on the proposed project site.

An evaluation of the functions of the wetland and its buffer, including references for the method used and data sheets.

A discussion of the potential impacts to the wetland(s) associated with any anticipated hydroperiod alterations from the project.

Maps (to scale) depicting delineated and mapped wetlands and required buffers on site, including buffers for off-site wetlands that extend onto the project site; the development proposal; other critical areas and their buffers; grading and clearing limits; and areas of proposed impacts to wetlands and/or buffers (include square footage or acreage).

Buffer Width Table.

Increased Wetland Buffer Width. Buffer widths shall be increased on a case-by-case basis as determined by the Planning Department when a wider buffer is necessary to protect wetland functions and values. This determination shall be supported by appropriate documentation showing that it is reasonably related to protection of the functions and values of the wetland. The documentation shall include but not be limited to the following criteria:

Buffer averaging to improve wetland protection may be permitted when all of the following conditions are met:

Averaging to allow reasonable use of a parcel may be permitted when all of the following are met:

Compensatory mitigation for alterations to wetlands shall be used only for impacts that cannot be avoided or minimized and shall achieve equivalent or greater functions. Compensatory mitigation plans shall be consistent with Wetland Mitigation in Washington State-Part 2: Developing Mitigation Plans—Version 1 (Ecology Publication #06-06-011b, or as revised), and Selecting Wetland Mitigation Sites Using a Watershed Approach, Eastern Washington, (Ecology Publication #10-06-007), or as revised.

Approaches to Compensatory Mitigation. Mitigation for lost or diminished wetland and buffer functions shall rely on the approaches listed below:

Credit-Debit Method. To protect functions and values more fully, and as an alternative to the mitigation ratios found in this Chapter, the Planning Department may allow mitigation based on the Credit-Debit Method developed by the Department of Ecology in Calculating Credits and Debits for Compensatory Mitigation in Wetlands of Eastern Washington (Ecology Publication #11-06-015), or as revised.

Areas in which state or federally endangered, threatened, and sensitive species have a primary association;

Habitats and species of local importance, as determined locally;

Naturally occurring ponds under 20 acres and their submerged aquatic beds that provide fish or wildlife habitat:

Waters of the state;

Lakes, ponds, streams, and rivers planted with game fish by a governmental or tribal entity;

State natural area preserves, natural resource conservation areas and state wildlife areas;

Riparian areas;

Intermittent and perennial streams; and

Priority habitats and species as identified by the Washington State Department of Fish and Wildlife Priority Habitats and Species Program.

All existing areas of the City of Colville identified as stated in subsection A.2 of this section, as determined by the administrator, are designated as Fish and Wildlife Habitat Conservation Areas.

In addition to existing Fish and Wildlife Habitat Conservation Areas in the City of Colville identified as stated in subsection A.2 of this section the City of Colville may designate additional species, habitats of local importance, and/or wildlife corridors as follows:

Fish and Wildlife Habitat Conservation Areas will be left undisturbed, unless the development proposal involves appropriate mitigation and enhancement measures, as determined on a site-specific basis.

Maintenance of Fish and Wildlife Habitat Conservation Area Buffers. Where buffers are specified as a requirement in this chapter or identified in an approved management and mitigation plan, the buffer areas shall be maintained between all permitted uses and activities and designated Fish and Wildlife Habitat Conservation Areas. Minimum standards for the maintenance of these buffers include but are not limited to:

Site-Specific Tree Height Buffer Standard. Buffers for Fish and Wildlife Habitat Conservation Areas associated with streams and riparian wetlands shall be established using a site-specific tree height standard guidelines and calculator. For dryland ecosystems, the minimum buffer width shall be equal to the average mature height of the dominant native tree species present within the adjacent riparian plant community, or 100 feet, whichever is greater. For those areas without a site-potential tree height value, or imputed site-potential tree height value, the city or applicant may consult with a WDFW Habitat Biologist to find out what riparian management zone width values the project site shall be.

The location of all geologic hazard areas, springs, seeps, or other surface expressions of groundwater on or within 200 feet of the project area;

Location and boundaries of all critical areas and related buffers on the site and on adjacent lands within 25 feet of the site's property lines, noting both total square footage and percentage of site covered by critical areas and related buffers;

Location and identification of all riparian corridors and wetlands within 100 feet of the site's property lines;

Location and boundaries of all existing and proposed site improvements on the site, on adjacent lands within 25 feet of the site's property lines, and on the full width of abutting public rights-of-way and private easements. This shall include the amount of proposed land-disturbing activities, including amounts of developmental coverage, impervious surfaces, and construction activity areas (noting total square footage and percentage of site occupied);

Stormwater-flow characteristics within the site, on adjacent sites within 25 feet of the site's property lines, and on the full width of abutting public rights-of-way and private easements;

Location of all grading activities in progress, and all natural and artificial drainage control facilities or systems in existence or on adjacent lands or on the site or within 25 feet of the site's property lines, and in the full width of abutting public rights-of-way and private easements;

Location of all existing utilities (water, sewer, gas, electric, phone, cable, etc.), both above and below ground, on the site, on adjacent lands within 25 feet of the site's property lines, and in the full width of abutting public rights-of-way; and

For a proposal potentially affecting or affected by an erosion or landslide hazard area: