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Hillcrest Community Environmental Investigation (HCEI), Phase I

Phase I of the HCEI, which attempts to determine whether there are environmental impacts from volatile organic compounds to soil, groundwater, or ambient air in the Hillcrest community and adjacent areas of Corpus Christi.


This page last updated on 12/15/2011

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HCEI Phase I Completion Report

The HCEI contractor, Geo Strata, has prepared a report documenting the implementation of Phase I.

HCEI Phase I Completion Report

The final data package for Phase I has been received from the laboratory and is posted below, along with a data-usability summary, dated July 15, 2010, containing an analysis of the quality assurance–quality control information in the HCEI final data package.

Updated Final Data Package

Combined Benzene, Toluene, Ethylbenzene, Xylene (BTEX), Total Petroleum Hydrocarbons (TPH), and Naphthalene Passive Soil-Gas Sampling Locations

Preliminary data maps for Phase I displaying values greater than the laboratory’s reporting limit have been prepared. No widespread masses of chemicals of concern were observed via this screening methodology. This data will be used in Phase II after the required quality assurance and quality control have been completed.

Note: The TPH data quantifiable by the laboratory (higher than the reporting limit of 2500 nanograms) appear in the Preliminary PSG Map, Part 2. The TPH levels are for a mixture of aliphatic hydrocarbons and do not include aromatic hydrocarbons such as benzene, toluene, ethylbenzene, and xylene.

Preliminary PSG Map, Part 1

Preliminary PSG Map, Part 2

Preliminary Phase I Data

GPS and Sample ID Information

HCEI Final Field Sampling Plan (FSP)


HCEI Phase I Contractor

HCEI Previous Drafts

Fact Sheets

What is toxicology?

What are Chemicals of Potential Concern?

How is a Health Assessment Conducted for Phase II of the HCEI?

Join the HCEI E-mail Update List

To receive e-mail updates on the Hillcrest Community Environmental Investigation, please e-mail and state your interest in joining the HCEI e-mail update list. Once the list administrator has admitted your e-mail address you will receive a “Welcome” document confirming your placement on the list.

Contact Information

For more information or to suggest topics for future meetings, please contact Neeraja Erraguntla, Ph.D., of the Toxicology Division at 512-239-1795 or toll-free 1-877-992-8370 / or Omar Valdez of the Remediation Division at 512-239-2200 /