Happy Valley is getting a new park, and you’re invited to celebrate its grand opening! Located east of 145th Avenue and Scouters Mountain Road, the new neighborhood park will feature an all-abilities playground, a mobility charging station, a tennis/pickleball court, a picnic shelter, restrooms and walking trails. Additionally, there will be a dog park for Happy Valley’s furriest residents. The grand opening for the park will take place on Tuesday, Aug. 11, from 10 a.m. until noon at 10478 S.E.…