CASE STUDY 37 — Decker Dr. Site Expansion Unpermitted Site Expansion | Civil Engineering & Retroactive Permitting

PROJECT OVERVIEW

JRH Engineering resolved a permit violation for an unpermitted expansion at an existing Baytown, Texas site that also required updated paving to meet City of Baytown standards. The project required simultaneous approval from Harris County and the City of Baytown. JRH designed a retaining wall detention system to resolve the drainage deficit from the unpermitted expansion, redesigned paving to current city standards, and incorporated a fire lane — pursuing both agency approvals in parallel to avoid sequential review delays.

AT A GLANCE

Site Civil & Drainage Design

● Retaining wall detention system designed to gain storage capacity within a minimal footprint — resolving the drainage deficit from the unpermitted expansion without sacrificing site usability

● Paving redesigned to meet current City of Baytown standards — required as part of the retroactive permitting process

● Fire lane incorporated into the revised site layout — new city requirement addressed in the redesign

Permitting & Agency Coordination

● Harris County and City of Baytown approvals pursued simultaneously — no sequential review delays

● Retaining wall detention documentation submitted to Harris County as the drainage compliance solution

● Paving and fire lane design submitted to City of Baytown concurrently with county drainage review

THE CHALLENGE

Retroactive permitting for an unpermitted expansion requires solving two problems simultaneously: the drainage deficit created by the unpermitted impervious area, and the city's current standards that the existing site may not meet. Addressing them sequentially — getting the county permit first, then dealing with the city — doubles the timeline unnecessarily.

JRH's Approach

JRH designed the retaining wall detention system to address the Harris County drainage requirement and redesigned the paving and fire lane to address City of Baytown's current standards — submitting both simultaneously. A retaining wall pond was used because it gains storage volume in a compact footprint without consuming large amounts of site area, which is critical when dealing with a violation on a site where available land is limited.

The Result

Harris County and City of Baytown approvals secured simultaneously — unpermitted expansion resolved with a retaining wall detention system and updated paving.

RESULTS

● Permit violation resolved through retaining wall detention system — drainage deficit from unpermitted expansion compensated

● Harris County and City of Baytown approvals pursued simultaneously — no sequential delays

● Paving and fire lane brought to current city standards as part of the retroactive permitting scope