Ezone Activation Code

[Marcelo Chaplin]

Thefollowing is a general explanation of the environmental overlay zones but does not cover all situations and circumstances. It is important to refer to the actual environmental zone code, Chapter 33.430 to understand how the regulations apply to any given site.

Environmental overlay zones, or ezones, and the regulations that accompany them, are a tool used by the City to help protect important natural resources in Portland. Examples of natural resources identified by the City for protection include:

Ideally, the portion of your property that is in an ezone should be left natural and undeveloped. However, many of the natural resources in Portland have been altered by yards, driveways, parking areas, docks, and even portions of houses and buildings. These areas still provide functions, like flood storage, and additional impacts should be avoided.

When new development, like an addition to your house or a new parking area, is proposed in an ezone, impacts to the resources need to be minimized as much as possible and any resources negatively impacted or destroyed must be replaced. To ensure the proposed development meets zoning code requirements,an Environmental Review by the Bureau of Development Services may be required.

The c-zone is applied to natural resources that are important but where some environmentally sensitive development may be permitted. The p-zone is applied where the resources are critical and development should be avoided except under special circumstances, such as when a public road needs to cross a stream or drainageway. In either c- or p-zones, the location and extent of development needs to minimize impacts on the resources, and the property owner is responsible for the replacement of any resources that are lost.

If the development or activity is not exempt, it will need to be reviewed against the development standards. Standards reflect situations where minimal impact to the resources are allowed under certain circumstances. When the activity or development can meet standards then only an Environmental Plan Check by the Bureau of Development Services is required. For example, standards for stormwater outfalls specify how large a pipe can be used, how much area can be disturbed to install the pipe, what plants and trees can be removed, and other aspects of the construction work and impact area.

A permitted lawn or landscaped area in the c- or p-zone can be converted to a garden if no trees are removed. Existing gardens, lawns, and other landscaped areas in c- or p-zones can be maintained and new plants can be installed if they are not listed as a nuisance species on the Portland Plant List.

Rivers, streams, and wetlands that provide a variety of functions such as fish and wildlife habitat, stream flow, pollutant and sediment filtering, food web, nutrient cycling, microclimate, etc. are typically regulated by the e-zone. Those waterways may be dry for part of the year or may flow through a pipe or culvert for some distance.

Staff is working hard to update ezones through the E-zone Map Correction Project; the goal of the project is to produce accurate and consistent mapping throughout the city. Staff can perform a site visit to verify the location of the streams, wetlands and vegetation on your property. To request a site visit please call 503-823-4225 or email ez...@portlandoregon.gov.

There is a free process that property owners can use to request that the City correct the ezone boundaries. Property owners can request a correction at any time. Zoning code 33.855.070 provides the details.

The City of Portland ensures meaningful access to City programs, services, and activities to comply with Civil Rights Title VI and ADA Title II laws and reasonably provides: translation, interpretation, modifications, accommodations, alternative formats, auxiliary aids and services. Request these services online or call 503-823-4000, Relay Service: 711.

Wavelength Zones allow developers to build applications that deliver ultra-lowlatencies to 5G devices and end users. Wavelength deploys standard AWS compute andstorage services to the edge of telecommunication carriers' 5G networks.

AWS operates state-of-the-art, highly available data centers. Although rare, failurescan occur that affect the availability of instances that are in the same location. If youhost all of your instances in a single location that is affected by a failure, none of yourinstances would be available.

When you view your resources, you see only the resources that are tied to the Regionthat you specified. This is because Regions are isolated from each other, and we don'tautomatically replicate resources across Regions.

An AWS account provides multiple Regions so that you can launch Amazon EC2instances in locations that meet your requirements. For example, you mightwant to launch instances in Europe to be closer to your European customersor to meet legal requirements.

The following table lists the Regions provided by an AWS account. You can'tdescribe or access additional Regions from an AWS account, such as theAWS GovCloud (US) Regions or the China Regions. To use a Region introduced after March20, 2019, you must enable the Region. For more information, see Specify which AWS Regions your account can use in theAWS Account Management Reference Guide.

The number and mapping of Availability Zones per Region may vary betweenAWS accounts To list the Availability Zones that are available to your account,you can use the Amazon EC2 console or the command line interface. For more information,see Describe yourRegions.

When you work with an instance using the command line interface or API actions,you must specify its Regional endpoint. For more information about the Regions andendpoints for Amazon EC2, see Amazon EC2 endpointsand quotas in the Amazon Web Services General Reference.

You can use the Amazon EC2 console or the command line interface to determine whichRegions are available for your account. For more information about these commandline interfaces, see Access Amazon EC2.

The longName parameter contains the Region display name. Thefollowing get-parameters-by-path command returns the display name of theaf-south-1 Region. It uses the --query option to scopethe output to the name of the Region. You must enclose the query string in singlequotes on Linux. To run this command using the Windows Command Prompt, either omitthe single quotes or change them to double quotes.

When you launch an instance, you select a Region and a virtual private cloud (VPC),and then you can either select a subnet from one of the Availability Zones or let uschoose one for you. If you distribute your instances across multiple Availability Zonesand one instance fails, you can design your application so that an instance in anotherAvailability Zone can handle requests. You can also use Elastic IP addresses to mask thefailure of an instance in one Availability Zone by rapidly remapping the address to aninstance in another Availability Zone.

The following diagram illustrates multiple Availability Zones in an AWS Region.Availability Zone A and Availability Zone B each have one subnet, and each subnet hasinstances. Availability Zone C has no subnets, therefore you can't launch instances intothis Availability Zone.

As Availability Zones grow over time, our ability to expand them can becomeconstrained. If this happens, we might restrict you from launching an instance in aconstrained Availability Zone unless you already have an instance in that AvailabilityZone. Eventually, we might also remove the constrained Availability Zone from the listof Availability Zones for new accounts. Therefore, your account might have a differentnumber of available Availability Zones in a Region than another account.

To ensure that resources are distributed across the Availability Zones for aRegion, we independently map Availability Zones to codes for each AWS accountin our oldest Regions. For example, the us-east-1a foryour AWS account might not be the same physical location as theus-east-1a for another AWS account.

To coordinate Availability Zones across accounts in all Regions even thosethat map Availability Zones, use the AZ IDs, which are unique and consistent identifiers for an Availability Zone. For example,use1-az1 is an AZ ID for the us-east-1 Region,and it has the same physical location in every AWS account. You can viewthe AZ IDs for your account to determine the physical location of your resourcesrelative to the resources in another account. For example, if you share a subnet inthe Availability Zone with the AZ ID use1-az2 with another account,this subnet is available to that account in the Availability Zone whose AZ ID isalso use1-az2.

You can use the Amazon EC2 console or the command line interface to determine whichAvailability Zones are available for your account. For more information about thesecommand line interfaces, see Access Amazon EC2.

When you launch an instance, select a Region that puts your instances closer tospecific customers, or meets the legal or other requirements that you have. Bylaunching your instances in separate Availability Zones, you can protect yourapplications from the failure of a single location.

When you launch an instance, you can optionally specify an Availability Zone inthe Region that you are using. If you do not specify an Availability Zone, we selectan Availability Zone for you. When you launch your initial instances, we recommendthat you accept the default Availability Zone, because this allows us to select thebest Availability Zone for you based on system health and available capacity. If youlaunch additional instances, specify an Availability Zone only if your new instancesmust be close to, or separated from, your running instances.

If necessary, you can migrate an instance from one Availability Zone to another.For example, if you try to modify the instance type of your instance and we can'tlaunch an instance of the new instance type in the current Availability Zone, youcan migrate the instance to an Availability Zone with capacity for the new instancetype.

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