Serving Snohomish County, Washington
Septic design and practical engineering support for residential sites, repairs, remodels, and new construction. From the site plan to the detail sheet, the goal is a package that is clear enough for permitting and practical enough to build.
Have a property or septic question? Send a quick note and we can set up a call to talk through your project.
About
MK Professional Engineering is led by a Professional Engineer focused on clear, buildable septic design for properties in Washington State. The goal is simple: understand the site, design a system that fits the land, and keep the permitting path organized.
Serving Snohomish County homeowners, small builders, landowners, and real estate projects that need practical septic design guidance before moving forward.
A Clear, Three-Phase Process
Every property presents a different mix of soils, setbacks, development plans, and regulatory requirements. The work is organized into clear phases so the scope and next step can be shaped around the needs of your project.
Review the property, project goals, available records, soils, setbacks, slopes, wells, access, and other site constraints. When appropriate, this phase may include field investigation, soil logs, a draft site plan, and a preliminary system concept.
Once the likely system approach is established, prepare the final site plan, design drawings, calculations, construction details, and supporting documents needed for the selected on-site sewage system.
Organize the permit-ready package, coordinate through the initial health department review, and respond to standard agency comments. Any added testing, major redesign, or new scope is discussed before proceeding.
Project-Specific Scope
Septic projects can differ significantly in site conditions, system complexity, available information, testing needs, and agency requirements. After an initial review, MK Professional Engineering prepares a clear proposal for the phases and services that fit the project. Work can be authorized by phase, with the scope and fees established before each phase begins.
Layout decisions tied to soils, setbacks, access, reserve area, slope, and the way the site will actually be built.
Design notes can include absorption area, trench details, dosing, pump selection, calculated head, and tank storage.
Clear drawings and supporting notes that help the owner, installer, and county reviewer understand the design intent.