In PC10, Gruninger focuses on the visceral mechanics of the California coast, emphasizing the interplay between the ocean's surface and the overhead atmosphere. The composition utilizes a landscape orientation to stretch the gaze across the water, highlighting how light interacts with the spray and the deep swells of the waves. It is an exploration of the Pacific as a source of constant visual flux, where the horizon serves as a boundary between liquid and air.

The artist employs a vivid palette to document the specific environmental conditions of the region, from the heavy, dynamic cloud formations to the way light refracts through the salt-heavy air. By manipulating visual focus, Gruninger draws attention to the diverse textures of the sea, creating a sense of depth that pulls the eye into the rhythmic, unpredictable motion of the tides.