Air Force Real Property Agency485 Quentin Roosevelt Rd., San Antonio, TX 78226-1858

Toll Free 1-866-725-7617 • www.afrpa.hq.af.mil

What is the Semiannual Compliance Plan Report?The former Kelly Air Force Base environmental cleanup program is currently regulated by the Texas Commission on Environmental Quality under the requirements of Compliance Plan CP-50310 and Permit Number HW-50310.

The compliance plan and permit, which were finalized in 1998 (and renewed Feb. 2009), require the Air Force to conduct corrective action and groundwater monitoring programs to address

contamination in the shallow groundwater zone.

The compliance plan and permit also require the Air Force to close four Resource Conservation and Recovery Act (RCRA)-regulated units and investigate solid waste management units (SWMUs) or sites under applicable regulatory programs. Of the four RCRA regulated units, only two sites remain open (Site E-3, which was a chemical evaporation pit in Zone 2 and Site S-8, which was a former automated engine parts cleaning facility in Zone 3). The

compliance plan requires the Air Force to submit two semiannual reports covering specific activities.

Understanding the Semiannual Compliance PlanA User’s Guide

Sampling Cap

Seal

Protective Surface Casing

Concrete Surface Seal

Slotted Casing

Groundwater

Vent

Gravel

Well Casing

First Semiannual Compliance Plan Report

• Due to TCEQ in July of each year (covers data from prior six months)

• Reports water level measurements (gauging) and sampling performed in January of groundwater monitoring wells for the two open RCRA-regulated units • Leon Creek assessment • Reports basewide gauging activities performed in March • Determines if cleanup systems are working

Second Semiannual Compliance Plan Report• Due to TCEQ in January of each year (covers data from prior six months) • Gauging and sampling of basewide groundwater monitoring wells to evaluate the condition of the shallow groundwater • Monitoring and sampling of monitoring wells specific to the two RCRA-regulated units • Leon Creek assessment with analysis of fish tissue sampling • Determines if cleanup systems are working

Why is the Air Force not cleaning up Leon Creek? Leon Creek is an urban creek with contributing sources that can affect water and sediment quality both upstream and downstream from the former Kelly AFB. Historical trends, as well as sampling of reference creeks (Medina River, Medio Creek and Salado Creek) are evaluated to detect anything out of the ordinary. While certain chemicals may exceed Texas Water Quality Standards, detections have not shown these chemicals to exceed human health standards. Based on the Ecologi-cal Risk Assessment, approved by the TCEQ in November 2005, Leon Creek is protective to ecological receptors. Leon Creek is not an actual site where any prior industrial activity occurred, current conditions do not impact human health, and federal and state regulators do not require the Air Force to cleanup Leon Creek.

I want to evaluate what source areas of on-base contamination are contributing to plumes in my neighborhood.The January report contains a figure entitled “Basewide Groundwater Potentiometric Map” which shows current groundwater directional flow for all areas

Where can I access these reports? Once approved by the TCEQ, Semi-annual Compliance Plan Reports are available online at https://afrpaar.afrpa.lackland.af.mil/ar/docsearch.aspx. Also, copies of these reports are available in the Information Repository at the San Antonio Central Library, 600 Sole-dad, San Antonio, TX 78205, in the government document section on the 2nd floor.

I’m concerned about health risks associated with contamination caused by the former Kelly AFB activities. The Semiannual Compliance Plan Reports evaluate environmental conditions only. For health-related inquiries, please contact the Public Center for Environmental Health. The Air Force contributes funding to support the PCEH to conduct health studies, monitor and document local and regional public health is-sues related to potential exposure to environmental contamination re-lated to past practices at the former Kelly AFB, and to develop strategies for evaluating possible adverse health outcomes. The PCEH can be reached by calling (210) 532-5765.

I would like to find out the current status of open RCRA-regulated sites. Which report should I reference? The July report focuses on open RCRA-regulated sites.

ABOUT AFRPA

The Air Force Real Property Agency oversees the environmental cleanup activities at former Air Force bases throughout the United States. Our goal is to complete cleanup actions needed to protect human health and the environment and to transfer property for reuse. AFRPA also plays a key role in property reuse/privatization and serves as the Air Force liaison supporting interim property leases.

For more information, please call our public information line toll-free at 1-866-725-7617, visit us on the web at www.afrpa.hq.af.mil or mail us at:

Frequently Asked Questions

Engineer analyzes groundwater collected as part of the sampling process.

Graphical representation of a well used to sample and monitor the

shallow groundwater.

AFRPA2261 Hughes Ave., Suite 121

Lackland AFB, Texas 78236-9821

Reporting RequirementsIn the first section of each report, a compliance plan checklist details specific reporting requirements, and the location within the report where the information is located, where applicable. Additionally, the second part of the table summarizes modifi-cations to the compliance plan, both complete and pending actions.

Three Basic Sections of Each Report1. Groundwater Level Measurements (Gauging)

In order to evaluate the current conditions of the shallow groundwa-ter, it is necessary to determine the depth to groundwater in monitoring wells and actively-pumping recovery wells across the base and adjacent off-base areas. In times of drought or high amounts of rainfall, the wa-ter level can fluctuate.

The shallow groundwater zone typi-cally ranges from less than one foot to 40 feet below the ground surface. A change in water levels can im-pact the amount of contaminants found in the groundwater, and thus the amount of contaminants flow-ing through remediation systems. Groundwater in the main portion of the base generally flows toward Leon Creek. Groundwater along the eastern side of the former base and in the vicinity of Zone 4 generally flows toward Six Mile Creek.

2. Groundwater AssessmentGroundwater sampling is conducted to evaluate conditions in the shal-low groundwater zone beneath the former Kelly AFB and off-site areas adjacent to the former base.

The July report focuses on the two RCRA-regulated units which are still open and the January report takes a more basewide approach.

The former Kelly AFB has historically been subdivided into five ground-water zones (Zones 1 through 5). Submittal of modifications for Zones

2, 3, 4 and 5 further grouped these Zones into 11 waste management areas (WMAs).

Groundwater assessments at each site reported evaluates the presence of various chemicals of concern, groundwater protec-tion standards (GWPS) for each chemical, and the effectiveness of relevant treatment systems in place. Although different chemicals of concern exist in various zones, the following main groups are assessed during the groundwater assessment:

• Volatile organic compounds (VOCs)• Semivolatile organic compounds (SVOCs) • Total metals • Pesticides

• Polychlorinated biphenyls (PCBs) • Total petroleum hydrocarbons (TPHs)

3. Leon Creek AssessmentThe Leon Creek monitoring pro-gram was initiated to document the physical, chemi-cal and biological conditions of the creek upstream, adjacent to and downstream of the former Kelly AFB. Assessment activities include surface water and sediment sampling, surface water elevation and flow measurements.

The January report also includes the results of collection and analy-sis of fish tissue samples.

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Hwy 90 Zone 5PRB (34th St)

Zone 5 PRB (B1533) - Installed toaddress GW contamination at location

Zone 4Pump & Treat System

Site MP Recovery System & Slurry Wall -Site excavation and repaving completed Aug 2009

S-8 Recovery System & SVE/Biovent

Impermeable Barrier

E-1 Recovery System - Consists of verticalGW wells and trench with four standpipes

B348 SVE - Installed and currently operatingto address soil contaminant at location

B360 PRB & SVE

B301 PRB

S-4 Recovery SystemZone 2 GroundwaterTreatment Plant

E-3 Recovery System - Removed Nov 2007with source material properly disposed

600 Area Recovery System - Contains five GWrecovery wells at the southern portion of WMA

Zone 2 PRB & Slurry Wall - Located down gradient ofB522 to address chlorinated solvent contamination

B522 Soil Vapor Extraction/Bioventing -Installed to address soil contamination at location

Zone 4 GroundwaterTreatment Plant

Zone 4PRB (Malone St)

Zone 4PRB (Commercial St)

Site S-1 - Contains vertical recovery wells andSVE system; ERH System currently operating

1600 Area - AdditionalEnhanced Bioremediation

Zone 5 GroundwaterTreatment Plant

Zone 5 EnhancedBioremediation

Zone 4 EnhancedBioremediation

S-4 Recovery System - Multiple on-site and off-siterecovery trenches and an off-site PRB

Remediation Systems / Processes May 2011

0 0.5 10.25Miles

Legend

Date: 06 May 2011x:\em\arcview\proj\prb-all\remed-process_05-2011.mxd

PRB LocationRemediation System

LegendPRB LocationRemediation System

µ

PCE 2011 Plume Reduction TCE 2011 Plume Reduction

Map depicts extent and concentration of the PCE plume. The bold green line identifies the original boundary in 1998

Shallow Groundwater Profile

Map depicts extent and concentration of the TCE plume. The bold green line identifies the original boundary in 1998. The green shapes identify the location of cleanup systems

Scientists sampling Leon Creek