Hall Street Grill is known for seasonal, locally sourced Northwest cuisine and seafood. Since I didn't find much about where their food comes from on their website, I called and was told they use local sources as much as possible such as:
Onsite raised garden beds the chefs use for herbs and some vegetables
Organic salad greens from Millennium Farms in Ridgefield, Washington, who use biodynamic methods (which focus on feeding and growing the organisms in the soil)
Pork from Carlton Farms in Carlton, Oregon, who consulted with Temple Grandin to create a humane harvesting process and don't use antibiotics or hormones
Chicken from Draper Valley Farms in Oregon and Washington, who don't use hormones or antibiotics and raise chickens in spacious barns with outdoor access
Wild caught seafood from Pacific Seafood Company in Clackamas, Oregon, which has strict sustainability, stewardship and quality assurance standards
They also recommended asking what the special is, which is often seasonal. I've been here once and ordered the special. It was my first time eating trout and it was the best fish I've ever tasted!