NOAA's Eugene/Mahlon Sweet Field station
NOAA's engineering weather data lists a station named Eugene/Mahlon Sweet Field, at an elevation of 374 feet. For that station it gives:
- a 1% summer design temperature of 88°F with a mean coincident wet-bulb temperature of 66°F, and a 99% winter design temperature of 25°F;
- in an average year, about 2 hours with the wet-bulb temperature above 73°F and about 118 hours above 67°F;
- a 50-year basic wind speed of 85 mph (3-second gust at 33 feet), a 100-year rainfall rate of 1.3 inches per hour and about 30 freeze-thaw cycles in an average year.
Drinking water: EWEB's hardness figure
EWEB's 2025 testing summary lists hardness as CaCO3 at an average of 17 mg/L, with a range of 16 to 18.
Why sort a recovery by role
A mold job passes through several pairs of hands, and trouble can start when two of them assume the other one has a task covered. Each section below names one party, what that party handles, and what you can ask of it. Keeping the roles apart also makes it easier to notice when one company is doing two jobs that may be better kept separate.
Your part in the first hours
Your first task is to slow things down without stirring up the growth. Where the circuits in the room are safe to use, close the windows and set a dehumidifier running. Pull up standing water with towels, a mop or a wet vacuum, and carry anything soaked, such as a rug, a box of papers or a cushion, to a dry room. Keep any fan from blowing across the stained area. If you need to stay in the room for a while, gloves, eye protection and a well-fitting disposable respirator come first, and children and pets wait elsewhere. Health questions belong with your doctor.
Before anything else moves, take pictures: the whole room from the doorway, each stained surface up close, and the belongings that got wet. Open a notebook and date every entry, from what you first noticed to each call you make.
The trade that stops the water
This party's job is the source, not the stain. Depending on where the water comes from, that may be a plumber, a roofer, a gutter installer, a window installer or a heating and cooling technician. A drip from a supply line can sometimes be slowed by closing the valve at the fixture or the main shutoff, but the lasting fix belongs to the trade.
Ask what it found, what it repaired, and whether anything nearby could still be letting water in. Ask for those answers in a short written note with the date on it, and keep the note for the remediation company and your insurer.
The assessor
Someone has to map the growth before anyone can price its removal. That person may work independently or may be the remediation company's own estimator. Either way, ask for a written assessment that shows where the growth is, how far into walls, floors or ceilings it appears to extend, which moisture source fed it, and what removal and cleaning it recommends. Ask what mold work the assessor has done before, and whether the assessor has any stake in which company wins the removal.
The remediation crew
Give the same written assessment to more than one remediation company and ask each to price exactly that. Read the bids for how each one handles:
- the plastic enclosure and the route crews use in and out;
- the filtered air machine and the negative pressure it keeps inside the enclosure;
- cutting and bagging drywall, insulation and carpet before they cross your rooms;
- cleaning and drying the studs, joists and subfloor that remain;
- the moisture target and the schedule for readings;
- what the company will show you at the end.
Then ask each bidder: What state license or registration, if any, covers this work, and what is the number? Ask for proof of liability coverage and workers' compensation, and ask whether the crew in your house will be its own employees or a subcontractor's.
While the work runs, the enclosure is the crew's space. Keep its entry shut and ask the lead for a brief update at the end of each day. If opening a wall shows more than the assessment described, ask for the added work and its price in writing before it begins.
Whoever checks the drying
A room can smell better and still hold wet framing. Ask who will take the moisture readings, at which marked spots, and how often, while dehumidifiers and air movers run in the closed space. Ask what number the plan treats as dry, and keep your own copy of the log as it fills. Before insulation or drywall goes back, ask to look into the open cavity yourself for clean, dry wood with no visible growth, and take your own photos.
The rebuild contractor
New drywall, trim, cabinets and flooring may come from a different company under its own contract. Ask that contractor which city permits the rebuild needs and who will pull them, and ask for its proof of coverage too. Tell it where the water came from and who repaired it, and hand over a copy of the final readings.
The insurer
Call your insurer as soon as a claim looks possible, ideally before damaged material leaves the house. Ask what your policy says about mold and about the water damage behind it, which photos and records it wants, and whether an adjuster should see the area first. Keep a list of each call: the date, the person you spoke with and what was said.
Afterward, the habits are yours again
- Keep a hygrometer in a room you use every day and note the reading now and then.
- Confirm that the bath and kitchen fans exhaust outdoors, and let them run a while after showers and cooking.
- Ask the heating and cooling technician to clean the condensate pan and line during each service.
- Keep gutters clear and downspouts discharging away from the foundation.
- Look at the floor of the sink cabinet whenever you reach under it.
- Leave a gap between stored boxes and outside walls so air can move.
Put every note, photo, assessment, bid, reading and invoice in one folder. When a buyer or an insurer asks about the old repair, the folder answers for you.