ConstructPermit LLC prepared and coordinated a detailed grading and drainage plan for a residential development project in Phoenix, Arizona. The development involved two new residential units, an addition, renovation of an existing detached garage, and retention of the existing driveway entrance.

The civil plan documented existing and proposed site elevations, drainage patterns, finished-floor relationships, property boundaries, easements, utility information, right-of-way improvements, and retention-basin locations. Retention calculations were provided using the required 100-year, two-hour storm event to compare pre-development and post-development site conditions.

The package also included drainage cross-sections, flood-zone information, construction notes, legal descriptions, legends, benchmarks, and contractor requirements. The completed plan clearly communicated how stormwater would be collected and retained while coordinating the proposed development with existing site conditions and municipal requirements.