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Questions and Answers
Our yard has persistent soggy areas each spring. What's the cause and solution?
This is a classic symptom of the seasonal high water table in Willamette Silt Loam, which has naturally poor infiltration. Surface grading alone is insufficient. A subsurface French drain system, daylighting to a safe outlet, is the engineered solution. Using permeable basalt pavers for any new patios can also increase surface absorption and meet City of Durham Planning Department runoff standards.
Our yard's soil feels compacted and thin. Does the age of our neighborhood affect this?
Properties built around 1993, like many in Durham City Center, are now on 33-year-old soil. Initial construction often strips topsoil and compacts the subsoil. The native Willamette Silt Loam, while fertile, has poor structure under compaction, leading to low oxygen and water infiltration. Core aeration and incorporating 2-3 inches of composted organic matter are critical to rebuild soil biology and porosity for healthy root zones.
Is a basalt paver patio better than a wooden deck for our fire-prone area?
For longevity and fire resilience, basalt pavers are superior. They are non-combustible, contributing to the defensible space required under Moderate Firewise USA standards. Unlike wood, they require no sealing, resist frost heave, and their permeability manages stormwater. Over a 25-year lifecycle, they offer lower maintenance and higher value retention in Durham's climate.
Do we need a permit to regrade our backyard, and what kind of contractor is required?
Yes, significant grading on a 0.25-acre lot typically requires an erosion control permit from the City of Durham Planning Department. This work must be performed by a contractor licensed by the Oregon Landscape Contractors Board (LCB). The LCB license ensures bonding, proper disposal of spoils, and adherence to engineered plans that protect adjacent properties and the watershed from sediment runoff.
We've spotted invasive English Ivy and Himalayan Blackberry. How should we handle it?
These are high-priority invasives that outcompete natives like Douglas Fir saplings. Manual removal of root crowns is most effective, followed by a targeted, glyphosate-free herbicide application to cut stems during active growth. Timing is critical to avoid the Clean Water Act blackout dates for nitrogen applications, protecting the local watershed from chemical runoff.
How do we keep our Tall Fescue lawn green during summer without wasting water?
Durham's Stage 1 voluntary conservation is best managed with ET-based smart irrigation. This system uses local weather data to apply only the water lost to evapotranspiration, preventing overwatering. Programming deep, infrequent cycles encourages deeper root growth in the silt loam, enhancing drought tolerance. This method maintains turf health while staying well within municipal water use expectations.
We want to reduce mowing and gas equipment noise. What are our options?
Transitioning high-input turf to a climate-adapted landscape is strategic. Replacing areas with native layers like Oregon Grape, Sword Fern, and Red-flowering Currant drastically cuts water, mowing, and fertilizer needs. This xeriscape approach future-proofs your property against tightening noise ordinances on gas blowers and aligns with 2026 biodiversity goals for the Tualatin River watershed.
We need an emergency cleanup after a major storm. How quickly can a crew arrive?
For urgent HOA compliance or safety issues, a crew can be dispatched from our staging near Durham City Park. The route via I-5 to Durham City Center typically requires 20-30 minutes during peak hours, factoring in traffic and weather. We prioritize these calls with electric equipment to comply with the 8am-8pm commercial noise ordinance, ensuring rapid, quiet response.
