Former Williams AFB Restoration Advisory Board (RAB)

(1)

I n t e g r i t y - S e r v i c e - E x c e l l e n c e

Headquarters U.S. Air Force

Former Williams AFB

Restoration Advisory Board

(RAB)

February 24, 2009

Highland High School

4301 E. Guadalupe Rd.

(2)

I n t e g r i t y - S e r v i c e - E x c e l l e n c e

Headquarters U.S. Air Force

Welcome

& Introductions

Presented by:

Mr. Bill Lopp & Mr. Len Fuchs,

RAB Community Co-Chairmen

(3)

Welcome & Introductions

Mr. Bill Lopp, Air Force Center for Engineering & the

Environment, Base Realignment & Closure Environmental

Coordinator (BEC) and RAB Co-Chair

Mr. Len Fuchs, RAB Community Co-Chair

Ms. Carolyn d’Almeida, Project Manager, U.S. Environmental

Protection Agency, Region IX

(4)

Agenda

Time Topic Presenter

7:00 p.m. RAB meeting convenes

•Welcome and introductions

•Community Co-chair remarks

•Review August and "ovember 2008 meeting minutes Mr. Bill Lopp Mr. Len Fuchs Ms. Amber Cargile 7:15 p.m. Environmental updates •Landfill LF004

•Parcel " Debris Area Investigation

•Liquid Fuels Storage area ST012

•Building 760 Site ST035

Property Transfer Update

Mr. Bill Lopp Mr. Jay Harbin

8:20 p.m. 8:30 p.m.

Community Involvement Plan Update Meeting wrap-up

•Review action items for next meeting

•Call for agenda items for next meeting

•Set date for next RAB meeting: May 19, 2009

Ms. Amber Cargile Mr. Bill Lopp Mr. Len Fuchs

9:00 p.m. Adjourn Mr. Bill Lopp

(5)

Welcome & Introductions, cont.

Review August and November 2008 RAB meeting minutes

Presented by:

Mr. Bill Lopp

(6)

I n t e g r i t y - S e r v i c e - E x c e l l e n c e

Headquarters U.S. Air Force

Environmental Updates:

LF004, PNDA, ST012,

and ST035

Presented by:

Mr. Bill Lopp,

Former Williams AFB BEC

and

(7)

LF004 RI/FS Update –

Supplemental RI

The Air Force conducted additional RI-related

fieldwork as recommended by the PRT.

Shallow Soil Gas Sampling

Advanced 8 shallow soil probes (by DPT) to collect soil gas

samples (maximum depth 15 ft)

These soil probes were at Site DP013 (Pesticide Burial Area) –

Closed under the OU-1 ROD after a Removal Action

Results did not indicate a source area

Deep soil gas/groundwater sampling near Kinder

Morgan above ground tank

Installed 15 deep soil borings to approximately 150 ft using a

hollow-stem auger drilling rig

(8)

LF004 RI/FS Update –

Supplemental RI

Deep Soil Gas/Groundwater Sampling – Cont.

The soil borings were drilled southeast of the Kinder Morgan

above-ground storage tank

This location corresponded to elevated shallow TCE soil gas

results collected in 2008 using DPT

TCE (and minor PCE) detections were observed from ground

surface to groundwater (suggesting a source)

Soil gas results from deep soil borings support the conceptual

site model that soil contaminants tend to spread laterally with

increasing depth

The following three-dimensional diagram is a plot of TCE in the

(9)

LF004 RI/FS Update –

3-D Soil Gas and Groundwater Results (TCE)

20-ft Soil Vapor Plume 40-ft Soil Vapor Plume 60-ft Soil Vapor Plume 80-ft Soil Vapor Plume 100-ft Soil Vapor Plume 120-ft Soil Vapor Plume 140-ft Soil Vapor Plume

(10)

LF004 RI/FS Update –

Next Steps

Prepare a supplemental Remedial Investigation /

Feasibility Study report (evaluating vadose zone

remedies and groundwater remedies).

Complete installation of approximately 40 wells to

optimize the monitoring well network as

recommended by the PRT

Phase I: Install 31 monitoring wells (2009)

Phase II: Install 9 offsite monitoring wells (2010) after property

easements are secured

Air Force submitted a well installation work plan for these wells

to the EPA and ADEQ on 29 January 2009.

Conduct an aquifer test (2009) following installation of

Phase I wells to support the evaluation of

groundwater remedy technologies in the Feasibility

Study.

(11)

LF004 RI/FS Update –

(12)

LF004 LTM Update –

GW Sampling

Air Force conducts semi-annual Long Term

Monitoring (LTM) at LF004 and annual cap

maintenance as required by the OU-1 ROD.

The most recent groundwater sampling was in Jan

2009.

Twenty monitoring wells were sampled as follows:

PDBs deployed for volatile organic compounds (VOCs)

Low-flow sampling for natural attenuation indicators

Jan 2009 results are pending data validation

Landfill maintenance was conducted in Nov/Dec

2008; more maintenance activities will be completed

in Mar 2009.

(13)

LF004 LTM Update –

TCE Results

(14)

LF004 LTM Update –

PCE Results

(15)

Parcel N Debris Area (PNDA)

PNDA is located east of Landfill LF004 in the south central

portion of the former base

During previous site walks Air Force, ADEQ, and URS

personnel observed ruptured ammunition (.50-caliber

cartridges) on the ground

The Air Force contracted URS to perform a Preliminary

Assessment/Site Inspection (PA/SI) to determine if

munitions-related activities or other disposal or burning activities

warranted additional CERCLA response actions

Work Plan activities (approved by regulatory agencies and Air

Force Safety Center): surface clearance, geophysical survey,

excavation of geophysical anomalies, and investigate other

possible environmental issues

(16)

PNDA –Field Work

The surface clearance was conducted in two areas:

Area 1: The Primary Area where ruptured ammunition had

been observed; and

Area 2: The area to the north where no ammunition had been

observed but paint cans and other debris had been noted

The surface clearance was conducted by UXO-trained personnel

Several munitions-related debris (MD) were located, mapped, and

identified

MD was located in Area 1, Area 2, and outside of the limits of the

PA/SI investigation boundaries

No MD contained energetic (explosive) material. MD was certified

(17)

PNDA – Surface Clearance

Observations

(18)

PNDA – Examples of Munitions

Debris Found

MK 31 Signal Projectors (Area 2)

GP Bomb fuse well ring (Area 2)

Ruptured .50 cal ctgs. w/ links (Area 2)

Unidentified Aluminum ctgs found west of Area 1

M 14 40mm signal ctg (expended) (Area 1)

Thermite Grenade residue (Area 1)

(19)

PNDA – Examples of Munitions

Debris Found

Firing wire.

(Found at various locations in Area 2) Unknown pyrotechnic cartridge remnants

(20)

PNDA – Conclusions

The geophysical survey was only conducted in Area

1 in accordance with the PA/SI Work Plan

Approximately 150 subsurface anomalies were

identified and mapped for future excavation

Based upon the identified MD found on the surface,

it is plausible that open pit burning of munitions may

have occurred at the PNDA

Data collection from the current investigation is

adequate to conclude the need for a full MMRP

investigation and clearance

(21)

PNDA – Next Steps

As a consequence of this conclusion:

Current field work at the site was suspended on 12

Feb 2009;

A security fence will be extended to keep

unauthorized people from entering PNDA (a security

fence already encloses most of Parcel N);

The Air force will publish a report of the findings; and

The Air Force will prepare a work plan to address

MMRP clearance and site characterization. This work

plan will require:

Review by the regulatory agencies

(22)

Site ST012 Update –

TEE System

Thermal Enhanced

Extraction (TEE) Pilot

System Test Update

Where we are in the TEE

test

Fuel removed/recovered

Soil Vapor Extraction (SVE) System Update

SVE Performance Reporting

Recent SVE well construction

Groundwater sampling

(23)

Site ST012 Update –

Where We Are in the TEE Test

Pilot Test Implementation Steps Schedule

Step 1: Groundwater Extraction (Aug 2008)

Step 2: Pre-Steam Treatment Mass Transfer Tests

(Sep 2008)

Step 3: Steam Injection (October 2008 – February

2009)

Step 4: Co-steam/Air Injection (February – April 2009)

Step 5: Air Injection (April – May 2009)

(24)

Site ST012 Update –

Fuel Removed/Recovered by TEE

TEE Operations Update

9.2 million pounds of steam injected since 28 Oct 08

Treatment

18 million gallons groundwater treated since 11 Aug 08

2,800 gallons of fuel dissolved in groundwater treated

5,500 gallons liquid fuel removed from oil/water separator

and recycled

2,600 gallons of fuel (as vapor) destroyed through thermal

oxidizers

This totals approximately 11,000 gallons of fuel

(25)

Site ST012 Update –

SVE System

SVE System: removes sources of fuel contamination in

deep soil that impact groundwater, and reduces the time

required for groundwater cleanup

Internal Combustion Engines (ICE)

Operated from 1997 to 2003

Removed 2,250,000 pounds of TPH (375,000 gallons

equivalent)

Current SVE System

Is comprised of seven, 3-well clusters

Installed 2005 and operated 24 hours/day, 7 days/week.

Removed 1,260,000 pounds of TPH (205,000 gallons

equivalent)

(26)

Site ST012 Update –

SVE Construction Update

Two additional Soil Vapor Extraction (SVE) Wells

Installed (SVE-08 and SVE-09)

Two, 3-well clusters at north end of Army Reserve

Center Property to remediate contamination from 25

feet to 160 feet below ground surface

Pilot studies were conducted on both well clusters

in December 2008 and January 2009 for efficacy of

treatment options.

(27)

Site ST012 Update –

SVE Construction Update

(28)

ST012 Groundwater Sampling

Update

To fulfill an OU-2 ROD requirement and to complement the

ST012 TEE Pilot Test, the Air Force conducts Long Term

Monitoring (LTM) at ST012.

The most recent Annual Groundwater Sampling event was

conducted January 2009.

Samples from seventeen monitoring wells were collected for

the following laboratory analyses:

Volatile Organic Compounds (VOCs)

Semi-Volatile Organic Compounds (SVOCs)

Total Petroleum Hydrocarbons (TPH)

Metals

Pesticides (not required by the OU-2 ROD)

(29)

ST012 Groundwater Sampling

Update – Site Figure

(30)

ST012 Groundwater Sampling

Update – Benzene Contours

(31)

ST012 Groundwater Sampling

Update – Results & Next Events

Preliminary results indicate:

Six monitoring wells exceeded the benzene MCL

(5 mg/l).

One monitoring well exceeded the ethylbenzene

MCL (700 mg/l).

Four samples exceeded action levels for Ni

and/or Cr; however, the OU-2 ROD attributes

detections of Ni and Cr above action levels to

stainless steel well materials.

Pesticides detected at low levels (estimated

(32)

ST012 MW Installation and

Abandonment

AF submitted a work plan to the EPA and ADEQ in

Jan 2009, the for the following well construction:

Phase I (2009)

Install 5 UWBZ wells

Install 5 W-Series wells

Abandon 4 N-Series wells

Abandon an un-used injection well west of ST012

Phase II (2010)

Install 2 W-Series wells

Abandon 7 N-Series wells

(33)

ST012 MW Installation and

Abandonment

Abandon Wells

(34)

ST035 (Former Building 760)

GW Sampling –Update

ST035 is a former UST site located on the ASU

Polytechnic Campus

The Air Force conducts quarterly groundwater

monitoring at eight monitoring wells

The last quarterly sampling occurred in Jan 2009

Groundwater samples were analyzed for BTEX,

MTBE, EDB, lead, and natural attenuation

parameters

(35)

ST035 GW Sampling –

January 2009 Benzene Contours

(36)

ST035 GW Sampling –

Proposed Monitoring Wells

The Air Force will submit a work plan to ADEQ Tank

Division within 30 days to install four additional

monitoring wells.

The project for the new wells is validated and funded for

(37)

ST035 GW Sampling –

Proposed Monitoring Wells

(38)

ST035 Remediation –

Update

Soil Vapor Extraction (SVE)

The Air Force constructed soil vapor extraction wells

at ST035 and conducted a pilot test to dimension the

treatment system in 2008

The Air Force has a validated and funded project to

complete the final design, install, and operate the SVE

treatment system in 2009

The Air Force targets award of a contract within the

next 60 days.

Groundwater Remedy

The Air Force will make use of data collected from the

new groundwater monitoring wells discussed above

in an evaluation of groundwater treatment options

(39)

ST035 Remediation –

SVE Location

(40)

I n t e g r i t y - S e r v i c e - E x c e l l e n c e

Headquarters U.S. Air Force

Property Transfer

Update

Presented by:

Mr. Bill Lopp,

Former Williams AFB BEC

(41)

Property Transfer Update

Building 1085 (Site SS016) was transferred to the

Phoenix-Mesa Airport on 2 Feb 2009

The remaining properties yet to be transferred are:

Parcel N

Site SS017 (Old Pesticide/Paint Storage Shop)

Site FT002 (Fire Training Area)

(42)

Property Transfer Update

Williams – 03 Facility 1085 –

SS016 Transferred 2/2/09

(43)

I n t e g r i t y - S e r v i c e - E x c e l l e n c e

Headquarters U.S. Air Force

Community Involvement Plan

Update

Presented by:

Ms. Amber Cargile

(44)

Community Involvement Plan

1 minor comment received from RAB member

Regulatory comments received 12 Feb 09

Incorporated into final document

(45)

I n t e g r i t y - S e r v i c e - E x c e l l e n c e

Headquarters U.S. Air Force

Action Items

Presented by:

Ms. Amber Cargile,

Cargile Communications, LLC

(46)

I n t e g r i t y - S e r v i c e - E x c e l l e n c e

Headquarters U.S. Air Force

Meeting Wrap-Up

Presented by:

Mr. Bill Lopp & Mr. Len Fuchs,

RAB Community Co-Chairmen

(47)

Meeting Wrap-Up

Propose agenda items for next meeting

Next RAB meeting scheduled for May 19, 2009 at Highland High

School