The city is planning to construct a new city hall at a site with unique terrain. The highest elevation of the site is a ledge feature .The building will be constructed on top of the ledge, and parking lot will be constructed on a gentle slope adjacent to the ledge using pervious surface material. Storm water runoff will drain to a pond below the ledge feature.

The BMP will be located in hilly terrain which will allow for an evaluation of effectiveness under challenging circumstances. It will be part of a treatment train draining into a downstream detention pond. This will allow the project staff to evaluate the effectiveness of multiple BMPs. The City of La Joya is in a more rural part of the region and will allow for the evaluation of benefits of the practices in a still developing area. This site includes underground storage