The 24 inch sewer line located parallel to and offset from Mary's Creek was installed in 1956 to provide sewer collection service to areas in far west Fort Worth. With the heavy rains and associated flooding in May and June of this year, approximately 100 linear feet of the 24 inch clay sewer pipe was washed out, resulting in a sanitary sewer overflow into Mary's Creek.
Sanitary Sewer Overflows are a threat to the health and safety of the City of Fort Worth. Chapter 2, Article I, Section 2-9 of the City's Code of Ordinances and Section 252.022 of the Local Government Code exempts from normal bidding requirements expenditures that are necessary to preserve or protect public health or safety of the municipality's residents and procurements necessary because of unforeseen damage to public machinery, equipment, or property.
Bypass pumping operations were initiated in order to stop the overflow and continued until a new sewer line was installed. The replacement sewer line designed by in-house engineering Staff was moved further away from Mary's Creek. Approximately 470 LF of 24-inch pipe and five manholes were installed to repair the sewer main. It was beyond the City's ability to perform a repair of this size, length, and depth. The Water Department engaged William J. Schultz, Inc. d/b/a Circle C Construction Company for the emergency repair to Sanitary Sewer Main M-252.
The attached City Manager memo dated June 23, 2016 approved the emergency work up to $300,000.00. The total construction cost was $150,750.00, which is fair and reasonable for the work performed. The cost for equipment rental using existing city contracts for emergency bypass pumping was $21,886.04. A significant effort was made by Staff to remediate any impacts to the creek environment resulting from the wastewater overflow, which is reflected in the Field Operations Staff costs associated with this emergency response. Total cost for the emergency work performed on Mary's Creek Sewer Collapse is shown below:
Mary's Creek Sewer Collapse Cost Summary | | Company/Activity | Amount | | Barco Pumping | $697.50 | | US Shoring | $2,306.93
| | United Rental | $18,881.61 | | Circle C Construction | $150,750.00 | | Easements | $1,500.00
| | Design | $4,000.00
| | Field Operations | $90,113.96 | | Total | $268,250.00
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This project was located in COUNCIL DISTRICT 3, Mapsco 75V.
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