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Moss Lake Road Groundwater Plume

This site is a groundwater plume underlying Moss Lake Road in Big Spring, Howard County and is being addressed under the State Superfund Program.

Site Background

The Moss Lake Road Groundwater Site (the site) is located approximately ¼ mile North of the intersection of North Moss Lake Road and Interstate 20 approximately 4 miles east of Big Spring, Howard County, Texas. The site is a groundwater plume with an unknown source.

The Site was identified by the Texas Commission on Environmental Quality (TCEQ) during routine monitoring of public water supplies.  A sample collected was found to contain elevated levels of tetrachlorethene (PCE).

The TCEQ installed granular activated carbon water filtration systems at points of use where PCE concentrations exceeded Maximum Contaminant Levels (MCLs) and is providing operation and maintenance on the eleven filtration systems.

The TCEQ conducted a Preliminary Assessment and Screening Site Inspection (SSI) under the Preliminary Assessment/Site Inspection (PA/SI) Program for EPA Region 6 on February 2008 and June 2008, respectively.  The PA/SI and subsequent field work included sampling of domestic private water wells and the collection of surface soil samples located in the proximity of the site.  The plume is delineated around the North Moss Lake Road vicinity as of a sampling event conducted on June 2010.

Current Activities

  • June 2010, a Hazard Ranking System Package (HRS) was prepared for the Moss Lake Road Groundwater Site.
  • June 2010, the TCEQ sampled certain drinking water wells associated with the site. Validated results were sent to property owners and occupants in August.
  • July 16, 2010, a legal notice Exit TCEQ Site was published in the Texas Register (35 TexReg 6133-6406) and the Big Spring Herald announcing that a public meeting would be held  at 7:00 PM on August 24, 2010,at Coahoma High School, 606 North Main Street in Coahoma, Texas.  The purpose of this meeting is to obtain additional information regarding the area relative to its eligibility for listing on the state registry and to identify potentially responsible parties.
  • November 2010, the TCEQ sampled certain drinking water wells associated with the site. Validated results were sent to property owners and occupants in December.
  • May 2011, the TCEQ sampled certain drinking water wells associated with the site.
  • July 2011, validated results of the May 2011 sampling event were sent to property owners and occupants.
  • August 2011, the TCEQ approved the Remedial Investigation Technical Memorandum (RITM) documenting passive soil gas sample collection, monitoring well installation, and groundwater sampling.
  • November 2011, the TCEQ sampled monitoring wells and drinking water wells associated with the site.
  • December 2011, the TCEQ approved the RITM documenting the November 2011 groundwater sampling event.
  • January 2012, validated results of the November 2011 sampling event were sent to property owners and occupants.
  • February 2012, the TCEQ sampled monitoring wells associated with the site.
  • May 2012, the TCEQ sampled monitoring wells and drinking water wells associated with the site.
  • July 2012, soil borings were sampled to assess a potential source area. The soil borings were completed as soil-vapor extraction (SVE) wells for future site investigation activities. Quarterly groundwater monitoring was conducted and validated results of the May 2012 sampling event were sent to property owners and occupants.
  • October 2012, the TCEQ sampled monitoring wells and drinking water wells associated with the site.
  • January 2013, quarterly groundwater monitoring was conducted and validated results of the October 2012 sampling event were sent to property owners and occupants.
  • March 2013, quarterly groundwater monitoring was conducted.
  • April 2013, validated results of the March 2013 sampling event were sent to property owners and occupants.
  • June 2013, quarterly groundwater monitoring was conducted.
  • November 2013, analytical reports from the quarterly groundwater monitoring were received.
  • January 2014, the TCEQ sampled monitoring wells and drinking water wells associated with the site.  Validated results of the October 2013 sampling event were sent to property owners and occupants.
  • March-April, 2014, quarterly groundwater monitoring was conducted.

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Site Specific Information

EPA ID : None
Location : Big Spring, Howard County, Texas
Site Status : Evaluation Under Way
Type of Facility : Groundwater Plume
Category : Proposed to Registry
Media Affected : Groundwater Plume Underlying Moss Lake Road
Latitude : 32.278972° North
Longitude : 101.371755° West
Hazard Ranking Score (HRS) : 13.49
Contaminants at time of HRS : tetrachloroethene (PCE)
TCEQ Region : Midland - 7
Funded by : Hazardous & Solid Waste Remediation Fee Account

Contact Information

Superfund Project Manager
Nancy Johnson
817-588-5862
E-mail: superfnd@tceq.texas.gov

Superfund Community Relations Liaison
John Flores
512-239-5674 or 1-800-633-9363
E-mail : superfnd@tceq.texas.gov

Records Repositories

Howard County Library
500 South Main Street
Big Spring, Texas 79720
Telephone (432) 264-2260

TCEQ Central File Room
12100 Park 35 Circle Building E,
First Floor Room 103
Austin, TX 78753
512-239-2900
512-239-1850 (fax)
cfrreq@tceq.texas.gov