Lake Pflugerville Water Treatment Plant Membrane Replacement and Expansion
The project included the replacement of the existing membrane modules in two of the five treatment trains with new and larger capacity membranes. DCS staff prepared and submitted Direct Integrity Testing (DIT) calculations and updated capacity calculations to the TCEQ for approval of the project and a rerating of the membrane system to 22.0 mgd (an increase of 4.5 mgd). DCS led the membrane performance team (City and GE staff) to determine the actual peak production of the new membranes and water plant rerating.
West Brushy Creek Wastewater Treatment Plant
Round Rock, TX
The project included the process analysis of the existing plant to meet a new permit limit and determine the maximum treatment capacity of the facility with nutrient removal limit. DCS provided Texas Pollutant Discharge Elimination Systems (TPDES) permitting, prepared an Odor and Nuisance Control Plan, equipment pre-purchase bid package, preliminary engineering, final design, bidding, construction administration, and negotiation with Texas Commission on Environmental Quality (TCEQ) services for the rehabilitation and process modifications for this 40 year old facility to meet new TPDES criteria.
Commerce Center Business Park
Commerce Center is an approximately 160 acre, master planned business park consisting of many individual tracts of land. The project included preparing plans, specifications, hydraulics and hydrology, a dam safety plan, sanitary sewer lines, waterlines, box culvert storm sewer with inlets, roadway, sidewalks, and detention pond overflow structure, roundabout with pedestrian crosswalks, grading, and site work. Preliminary and final platting of the entire commerce center tract for the public infrastructure was completed.
Fort Bend County Wastewater Treatment Plant
DCS performed discharge permitting, preliminary engineering, design, bidding, and construction administration for the phased construction of this concrete treatment facility to increase plant capacity from 0.6 mgd to 1.2 mgd. The phased construction included modifications to an existing package treatment plant to expand the capacity from 0.600 mgd to 0.900 mgd and then the construction of a permanent concrete treatment facility to increase plant capacity to 1.20 mgd. The project included coordinating with the plant Operators to repurpose and modify selected treatment processes to reduce construction and operations cost. The site also has a sludge holding basin, thickener, dewatering pad, blower building, debris building, chlorination system, dechlorination system, effluent pumping station, 3.0 mgd reclaimed water pumping station, 0.45 mg prestressed below grade storage tank, and hydrotank. Plans incorporated the methods required to keep the existing plant in operation during construction without impacting the construction cost.
This project includes preliminary design with report, route analysis, easement identification, and preparing plans and specifications to construct a wastewater interceptor to serve the projected growth of the city along state highway corridors. The engineering process includes flow analysis with projections to evaluate the wastewater interceptor sizing and ultimate service area. Project includes open cut to a depth of 45 ft and tunneling from 45 to 70 ft depths; bore and jack for a sanitary sewer under a state highway and the demolition of two existing lift stations in right of ways. Work includes surveying, preliminary studies (i.e. environmental, geotechnical, traffic control plan, hydraulic & hydrology/floodplain delineation), design (civil, structural, electrical), bidding, and construction administration.
Blanco Wastewater Treatment Plant
DCS provided preliminary engineering, design, and construction administration services for a 0.225 MGD Conventional Wastewater Treatment Plant. The proposed Conventional Wastewater Treatment Plant is replacing an existing natural “lagoon based’ treatment plant to allow for improvement treatment and capacity. Existing structures were repurposed to allow the city to accept septic and provide greater flexibility and revenue generation. DCS was responsible for creating Plans and Specifications, including identifying existing infrastructure at the existing site to ensure proposed structures would not be conflicted. Additionally, DCS generated a Lagoon Closure Plan and submitted to the regulator agencies to formally decommission the existing treatment lagoons on site.