Park-Euclid Water Quality Assurance Revolving Fund · PDF filePark-Euclid Water Quality...

Southern Regional Office (SRO) 400 W. Congress, Suite 433, Tucson, AZ 85701

Draft Minutes of the

Park-Euclid Water Quality Assurance Revolving Fund (WQARF) Site Community Advisory Board (CAB) Meeting – 38th meeting

January 16, 2013, 6:30 - 8:30 p.m.

State of Arizona Regional Complex 400 W. Congress, North Building, Conference Room 158

Tucson, Arizona 85701

CAB Members Present: Mark Marikos, Jacky Turchick, Steve Turner, Freya Eddy, Bill Richards CAB Members Absent: Keith Bagwell, Justin Berkompas, Richard Byrd, Jonathan Salvatierra, Menachem Turchick, ADEQ Staff Present: Bob Wallin, Project Manager; William Ellett, Superfund Programs Unit Manager, Southern Regional Office; Marvel Encinas, Southern Regional Office; Delfina Olivarez, ADEQ Community Involvement Coordinator. Members of the Public Present: Harlan Agnew, Pima County; Janet Workman, URS Corp.; Larry Robinson, Pima County Flood Control; Robert Boudra, URS Corp.; Joe Drazek, Quarles & Brady LLP; Don Moore, Mission Linen

The meeting began at 6:45 p.m. 1. Call to Order/Introductions Co-chair Mark Marikos conducted introductions of CAB members and public participants. 2. CAB Recommencement Ms. Delfina Olivarez explained a majority or quorum of the CAB members were not present, therefore no business could be conducted; and if a quorum is present at the next CAB meeting business would be conducted. Ms. Olivarez handed out the Charter and Open Meeting Law/Quorum information and asked the CAB to review, she added if a quorum was reached at the next meeting they could make any desired changes to the Charter. 3. Nomination of Co-Chair(s) No quorum, not discussed. 4. Approval of 2/18/09 meeting minutes

Minutes of the 1-16-13 Park-Euclid CAB Meeting Page 2

No quorum, not discussed. 5. WQARF Program Update Mr. Bill Ellett gave an update on site work. The Remedial Investigation was completed in November 2011. Potential Responsible Parties, The Haskells and Mission Linen signed a work agreement with ADEQ, July 2010. This agreement allowed for resuming groundwater monitoring, start up of the multiphase extraction system, and to move forward with the Feasibility Study. 6. Site Update Mr. Robert Boudra of URS continued with details. See below presentation.

7. Arroyo Chico Project Update Mr. Larry Robison of Pima County Flood Control District gave an update on the Arroyo Chico Flood Control Project. Using poster size graphics of before and after Mr. Robinson explained how Basin 1, the last phase of the project is almost completed. 8. CAB Outreach Reports None. 9. Call to Public Achieving a quorum was discussed. 10. Next meeting date/agenda discussion A meeting in Spring was discussed. 11. Adjournment The meeting was adjourned at 8:20 p.m. This meeting was recorded on a digital device as a record of the proceedings. To listen to a recording, or for additional documents mentioned in these minutes, contact ADEQ, Delfina Olivarez at 602-771-4710.

Minutes prepared by: Delfina Olivarez 4/18/13 J:WPD\Planning\OU\Park Euclid\PE FS & May 23, 2013 CAB

Park Euclid WQARF Site

Mission Plant

² Source of base topographic data: TOPO!2,000 0 2,0001,000

Scale in Feet

ARIZONA

Tucson

Phoenix

Flagstaff

Project Area

§̈¦8

§̈¦10

§̈¦40

§̈¦15

§̈¦17

§̈¦19

§̈¦40

§̈¦10

Project Name: Park-Euclid WQARF Site

Job No: 22241866 Date: January 2013 Y:/GIS/Projects/Mission/Park_Euclid/Proj13/FS_Final/Fig1_SiteLocation.mxd

SITE LOCATIONPARK-EUCLID WQARF SITE301 SOUTH PARK AVENUETUCSON, ARIZONA

Figure 1

0 500 1,000

Scale in Feet

³

Explanation!> Perched Aquifer Well

!< Regional Aquifer Well

!H University of Arizona Production Well

Mission Plant

University of Arizona


Job No: 22241866 Date: January 2013 Y:/GIS/Projects/Mission/Park_Euclid/Proj13/FS_Final/Fig2_Wells.mxd

WELL LOCATIONSPARK-EUCLID WQARF SITE301 SOUTH PARK AVENUETUCSON, ARIZONA

Figure 2Source: Bing Maps aerial imagery web mapping service,(c) 2009 Microsoft Corporation and its data suppliers.

See Figure 3 for Mission Plant Area

1

1

10

100

1000

S. Pa

rk Av

e.

S. Fr

emon

t Ave

.

E. Manlove St.S.

Frem

ont A

ve.

E. 13th St.

VW-05-55: 55

VW-02-55: 0.4 VW-04-55: 2.8

VW-01-55: 1.4

VW-03-55: 0.09

VW-07-55: 2100

VW-06-55: 0.13

1

1

10

100

1000

S. Pa

rk Av

e.

S. Fr

emon

t Ave

.

E. Manlove St.S.

Frem

ont A

ve.

E. 13th St.

VW-05-55: 55

VW-02-55: 0.4 VW-04-55: 2.8

VW-01-55: 1.4

VW-03-55: 0.09

VW-07-55: 2100

VW-06-55: 0.13

0 100 200

Scale in Feet

³Note:

Aerial Imagery Source: Orthophoto provided by Pima Association ofGovernments, Pima County, Arizona, 2010

Explanation

Soil Vapor Sampling LocationPCE Concentration (ppmv)

1101001000Mission Plant

Project Name: Park-Euclid WQARF SiteJob No: 22241866 Date: October 2012 P-E/Semi_Annual_July2012/maps/Fig6_SV_PCE_55ft_July2012.mxd

PCE DISTRIBUTION IN SOIL GAS AT 55 FEET BGSJULY 2012PARK-EUCLID WQARF SITETUCSON, ARIZONA

Figure 6

VW-07: 2100 ID: PCE Concentration (ppmv)

!>

!?

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#_!?#_!?#_

!?

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!?!?

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??

?

?

?

Upgradient extent of product is not well defined

MLS-5: 2.40

MPE-6: 2.50

MLS-4: 4.10

*SVE-101: 3.29

PEP-9: 1.20

MPM-1: 4.77MPE-1: 4.37

MPE-5: 3.91PEP-8: 2.38

MLS-12: 2.36

MLS-13: 2.28

PEP-24: 1.98

WR-347A: 2.29SVE-104: 1.23

SVE-103: 0.03

MPE-3: 3.29

MPE-4: 3.34

MPE-2

WR-345A

S. Euclid Ave.

S. Pa

rk Av

e.

S. Fre

mont

Ave.

S. Sta

r Ave

.

E. Barraza Aviation Pkwy

E. 15th St.

E. 14th St.

E. Manlove St.

E. 13th St.

S. Sa

nta R

ita A

ve.

E. Miles St.

E. 12th St.

E. Broadway Blvd.

E. 10th St.

S. Pa

rk Av

e.

E. McKey St.

E. 12th St.

S. Fre

mont

Ave.

E. 13th St.

E. Miles St.

PEP-18

ADOT-1

PEP-10

PEP-19

PEP-11

!>

!?

!>

!>

!>

!>

!>

!>

!>

!>

#_!?#_!?#_

!?

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!>

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?

?

?

Upgradient extent of product is not well defined

MLS-5: 2.40

MPE-6: 2.50

MLS-4: 4.10

*SVE-101: 3.29

PEP-9: 1.20

MPM-1: 4.77MPE-1: 4.37

MPE-5: 3.91PEP-8: 2.38

MLS-12: 2.36

MLS-13: 2.28

PEP-24: 1.98

WR-347A: 2.29SVE-104: 1.23

SVE-103: 0.03

MPE-3: 3.29

MPE-4: 3.34

MPE-2

WR-345A

S. Euclid Ave.

S. Pa

rk Av

e.

S. Fre

mont

Ave.

S. Sta

r Ave

.


E. 15th St.

E. 14th St.

E. Manlove St.

E. 13th St.

S. Sa

nta R

ita A

ve.

E. Miles St.

E. 12th St.

E. Broadway Blvd.

E. 10th St.

S. Pa

rk Av

e.

E. McKey St.

E. 12th St.

S. Fre

mont

Ave.

E. 13th St.

E. Miles St.

PEP-18

ADOT-1

PEP-10

PEP-19

PEP-11

0 200 400

Scale in Feet

³

Project Name: Park-Euclid WQARF SiteJob No: 22241866 Date: October 2012 M.../P-E/P12/Semi_Ann_July2012/maps/PD_thickness_PA_July2012.mxd

PRODUCT THICKNESS AND DISTRIBUTIONJULY 2012PARK-EUCLID WQARF SITETUCSON, ARIZONA

Figure 8

Note:* Groundwater was not present at SVE-101 as product occupied the well casing to bottom of well, resulting in a thickness of 3.29 feet.

Aerial Imagery Source: Orthophoto provided by Pima Association of Governments, Pima County, Arizona, 2010

Explanation

!> Perched Aquifer Well!( Production Well!? Multi-Phase Extraction Well#_ Vapor Extraction Well

Approximate Extent of LNAPL, dashed where inferredMission Plant

MLS-13: 2.28 Perched Aquifer Monitoring Well ID:Product Thickness (feet)

!>

#_#_

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!?!?!?

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#_

!>

1

10

100MPE-6: 72

MPE-2: 69

MPE-4: 160

WR-347A: 1.8

MLS-6: < 1

MLS-5: < 1

PEP-9: < 20

PEP-8: < 20

PEP-24: < 1

PEP-19: < 1

PEP-18: < 1

PEP-11: < 1

PEP-10: < 1

MLS-13: < 1 MLS-12: < 1

ADOT-1: < 1

MPE-3: 590

SVE-103: 23

MLS-4: < 1

WR-345A: NS

MPE-1: < 10

SVE-101: NS

SVE-104: 27


S. Fre

mont

Ave.

E. 15th St.

S. Sta

r Ave

.

E. 14th St.

S. Pa

rk Av

e.

S. Euclid Ave.E. Manlove St.

E. 13th St.

E. Miles St.

E. 12th St.

E. 10th St.

E. Broadway Blvd.

E. McKey St.

E. 12th St.

E. Miles St.

E. 13th St.

S. Fre

mont

Ave.

S. Pa

rk Av

e. !>

#_#_

!>

!>!>

!>!>

!>

!?!?!?

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1

10

100MPE-6: 72

MPE-2: 69

MPE-4: 160

WR-347A: 1.8

MLS-6: < 1

MLS-5: < 1

PEP-9: < 20

PEP-8: < 20

PEP-24: < 1

PEP-19: < 1

PEP-18: < 1

PEP-11: < 1

PEP-10: < 1

MLS-13: < 1 MLS-12: < 1

ADOT-1: < 1

MPE-3: 590

SVE-103: 23

MLS-4: < 1

WR-345A: NS

MPE-1: < 10

SVE-101: NS

SVE-104: 27


S. Fre

mont

Ave.

E. 15th St.

S. Sta

r Ave

.

E. 14th St.

S. Pa

rk Av

e.


E. 13th St.

E. Miles St.

E. 12th St.

E. 10th St.

E. Broadway Blvd.

E. McKey St.

E. 12th St.

E. Miles St.

E. 13th St.

S. Fre

mont

Ave.

S. Pa

rk Av

e.

0 200 400

Scale in Feet

³Project Name: Park-Euclid WQARF SiteJob No: 22241866 Date: October 2012 Mission.../P-E/Semi_Annual_July12/maps/Fig10_PA_PCE_July2012.mxd

PCE DISTRIBUTION IN PERCHED GROUNDWATER, JULY 2012PARK-EUCLID WQARF SITETUCSON, ARIZONA

Figure 10

Note:


Explanation

!> Perched Aquifer Well!? Multi-Phase Extraction Well#_ Vapor Extraction Well

Groundwater Flow DirectionPCE Concentrations in Perched Aquifer (µg/L)

1 - 1010 - 100>100Mission Plant

PEP-24: <1 Perched Aquifer Monitoring Well ID:PCE Result (ug/L)

< Result is less than the Reporting LimitNS Not Sampled

!<

!<

!<

!<

!<

!<

!<!<

!<!<!<

!<!<

!<!<

!<

!<!<

!<

!<

1

10

100

100

10

1

100

10

PBR-10: 2

MLR-7: 20

UAM-2: 2.2

PER-23: 21

PER-15: 39

PER-26: 130

PER-25: 6.4

UAM-3: < 1UAM-1: < 1

MLR-2: < 1

MLR-1: < 1

PER-27: < 1

MLR-3: 8.2

PER-22: 7.6

PER-21: 8.1

PER-14A: 190

UAM-2B: < 1

PER-14: < 1

WR-347B: < 1

WR-345B: NS

E. 7th St.

E. 8th St.

N. Pa

rk Av

e.

E. 9th St.

N. M

ounta

in Av

e.

N. Sa

nta R

ita A

ve.

N. Vi

ne A

ve.

E. 10th St.

E. Broadway Blvd.

E. 12th St.

E. Miles St.

E. 13th St.

S. Vin

e Av

e.

S. Sa

nta R

ita A

ve.

S. Pa

rk Av

e.E. McKey St.

E. 12th St.

E. Manlove St.

E. 14th St.

E. 15th St.

S. Sta

r Ave

.

S. Sa

nta R

ita A

ve.

S. Fre

mont

Ave.

S. Pa

rk Av

e.

S. Euclid Ave.


!<

!<

!<

!<

!<

!<

!<!<

!<!<!<

!<!<

!<!<

!<

!<!<

!<

!<

1

10

100

100

10

1

100

10

PBR-10: 2

MLR-7: 20

UAM-2: 2.2

PER-23: 21

PER-15: 39

PER-26: 130

PER-25: 6.4

UAM-3: < 1UAM-1: < 1

MLR-2: < 1

MLR-1: < 1

PER-27: < 1

MLR-3: 8.2

PER-22: 7.6

PER-21: 8.1

PER-14A: 190

UAM-2B: < 1

PER-14: < 1

WR-347B: < 1

WR-345B: NS

E. 7th St.

E. 8th St.

N. Pa

rk Av

e.

E. 9th St.

N. M

ounta

in Av

e.

N. Sa

nta R

ita A

ve.

N. Vi

ne A

ve.

E. 10th St.

E. Broadway Blvd.

E. 12th St.

E. Miles St.

E. 13th St.

S. Vin

e Av

e.

S. Sa

nta R

ita A

ve.

S. Pa

rk Av

e.E. McKey St.

E. 12th St.

E. Manlove St.

E. 14th St.

E. 15th St.

S. Sta

r Ave

.

S. Sa

nta R

ita A

ve.

S. Fre

mont

Ave.

S. Pa

rk Av

e.

S. Euclid Ave.


0 300 600

Scale in Feet

³

Project Name: Park-Euclid WQARF SiteJob No: 22241866 Date: October 2012 P-E/Semi_Annual_July2012/maps/Fig14_RA_PCE_July2012.mxd

PCE DISTRIBUTION IN REGIONAL GROUNDWATER, JULY 2012PARK-EUCLID WQARF SITETUCSON, ARIZONA

Figure 14

Note:NS - Not Sampled, WR-345B could not be accessed due to nearbyconstruction activities.


Explanation

!< Regional Aquifer Well!( Production Well

Groundwater Flow DirectionPCE Concentrations in Regional Aquifer (µg/L)

1 - 1010 - 100>100

Mission PlantUniversity of Arizona

PER-27: <1 Regional Aquifer Monitoring Well ID:PCE Result (ug/L)

< Result is less than the Reporting Limit

TetrachloroetheneUAM-26

5

4

3

2

1

0

mic

rogr

ams

per l

iter

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 20120

1

2

3

4

5

6

Time-Series GraphsUAM-2Park - Euclid WQARF SiteTucson, ArizonaProject Name: Park - Euclid WQARF Site

Job No: 22241866 Date: January 2013

- Detected Concentration- Not Detected (Shown as RL)

EXPLANATION

2-carbonTreatment Filters


3-carbonTreatment Filters Treated Air Out

to Atmosphere

Waste Treatment and Discharge to Sewer

Clean Water to Plant Operations

Waste Hauler for Recycling

MPEWells

Washer (Commercial Laundry)Washer (Commercial Laundry)

Diesel/PCE Product LayerDiesel/PCE Product Layer

Perched GroundwaterPerched Groundwater

Vacuum BlowerVacuum Blower


Vapor/Product/Water MixtureVapor/Product/Water Mixture

Treated Air Out to Atmosphere

Zeolite FilterZeolite Filter

Oil/WaterSeparator

ProductStorage Tank

Clay FilterClay Filter

Waste Treatment and Discharge to Sewer

Contaminated Air/Water

Clean Air/Water

Clean Water to Plant Operations

VaporVapor

WaterWater

Water/P

rodu

ct

Water/P

rodu

ct

Unsaturated SoilUnsaturated Soil

ProductProduct

1

10

100

1000

10

1

E. 14th St.

S. F

rem

ont

Ave.


S. P

ark

Ave

.


S. S

tar

Ave

.

E. 15th St.

S. S

anta

Rita

Ave

.

E. 13th St.

E. Miles St.

S. S

anta

Rita

Ave

.

E. McKey St.

E. 12th St.

S. P

ark

Ave

.

E. Broadway Blvd.

E. 12th St.

E. 10th St.

N. F

rem

ont

Ave.

N. S

anta

Rita

Ave

.

S. F

rem

ont

Ave.

E. Miles St.

N. P

ark

Ave

.

N. T

ynda

ll A

ve.

VW-05-05VW-01-05

VW-03-05

VW-06-05

VW-07-05

VW-02-05 VW-04-05

1

10

100

1000

10

1

E. 14th St.

S. F

rem

ont

Ave.


S. P

ark

Ave

.


S. S

tar

Ave

.

E. 15th St.

S. S

anta

Rita

Ave

.

E. 13th St.

E. Miles St.

S. S

anta

Rita

Ave

.

E. McKey St.

E. 12th St.

S. P

ark

Ave

.

E. Broadway Blvd.

E. 12th St.

E. 10th St.

N. F

rem

ont

Ave.

N. S

anta

Rita

Ave

.

S. F

rem

ont

Ave.

E. Miles St.

N. P

ark

Ave

.

N. T

ynda

ll A

ve.

VW-05-05VW-01-05

VW-03-05

VW-06-05

VW-07-05

VW-02-05 VW-04-05

0 200 400

Scale in Feet

³


Job No: 22241866 Date: January 2013 P-E/Proj13/FS_Final/Fig_prop_SG_pnts_SV_PCE_5ft_July2012.mxd

PROPOSED SOIL GAS MONITORING POINTSVAPOR INTRUSION INVESTIGATIONPARK-EUCLID WQARF SITETUCSON, ARIZONA

Figure 7

Note:

Aerial Imagery Source: Orthophoto provided by Pima Associationof Governments, Pima County, Arizona, 2010

Explanation

Existing Soil Vapor Monitoring Well

Proposed Soil Gas Monitoring Point

Mission Plant

Interpreted PCE Concentration (ppmv)1

10

100

1000

VW-02

!<

!<

!<

!<

!<

!<

!<!<

!<!<!<

!<!<

!<!<

!<

!<!<

!<

!<

1010

0

1

10

100

100

10

1


S. P

ark

Ave

.

S. F

rem

ont

Ave

.

S. S

anta

Rita

Ave

.

S. S

tar

Ave.

E. 15th St.

E. 14th St.

E. Manlove St.

E. 12th St.

E. McKey St.

S. P

ark

Ave

.

S. S

anta

Rita

Ave

.

S. V

ine

Ave

.

E. 13th St.

E. Miles St.

E. 12th St.

E. Broadway Blvd.

E. 10th St.

N. V

ine

Ave

.

N. S

anta

Rita

Ave

.

N. M

ount

ain

Ave

.

E. 9th St.

N. P

ark

Ave

.

E. 8th St.

E. 7th St.

WR-345B: NS

WR-347B: < 1

PER-14: < 1

UAM-2B: < 1

PER-14A: 190

PER-21: 8.1

PER-22: 7.6

MLR-3: 8.2

PER-27: < 1

MLR-1: < 1

MLR-2: < 1

UAM-1: < 1 UAM-3: < 1

PER-25: 6.4

PER-26: 130

PER-15: 39

PER-23: 21

UAM-2: 2.2

MLR-7: 20

PBR-10: 2

!<

!<

!<

!<

!<

!<

!<!<

!<!<!<

!<!<

!<!<

!<

!<!<

!<

!<

1010

0

1

10

100

100

10

1


S. P

ark

Ave

.

S. F

rem

ont

Ave

.

S. S

anta

Rita

Ave

.

S. S

tar

Ave.

E. 15th St.

E. 14th St.

E. Manlove St.

E. 12th St.

E. McKey St.

S. P

ark

Ave

.

S. S

anta

Rita

Ave

.

S. V

ine

Ave

.

E. 13th St.

E. Miles St.

E. 12th St.

E. Broadway Blvd.

E. 10th St.

N. V

ine

Ave

.

N. S

anta

Rita

Ave

.

N. M

ount

ain

Ave

.

E. 9th St.

N. P

ark

Ave

.

E. 8th St.

E. 7th St.

WR-345B: NS

WR-347B: < 1

PER-14: < 1

UAM-2B: < 1

PER-14A: 190

PER-21: 8.1

PER-22: 7.6

MLR-3: 8.2

PER-27: < 1

MLR-1: < 1

MLR-2: < 1

UAM-1: < 1 UAM-3: < 1

PER-25: 6.4

PER-26: 130

PER-15: 39

PER-23: 21

UAM-2: 2.2

MLR-7: 20

PBR-10: 2

0 300 600

Scale in Feet

³


Job No: 22241866 Date: January 2013 Mission.../P-E/Proj13/FS_Final/Fig5_RA_PCE_July2012.mxd

PCE DISTRIBUTION IN REGIONAL GROUNDWATER,JULY 2012PARK-EUCLID WQARF SITETUCSON, ARIZONA

Figure 5

Note:NS - Not Sampled, WR-345B could not be accessed due to nearbyconstruction activities.

Aerial Imagery Source: Orthophoto provided by Pima Associationof Governments, Pima County, Arizona, 2010

Explanation

!< Regional Aquifer Well

!( Production Well

Groundwater Flow Direction

PCE Concentrations in Regional Aquifer (µg/L)1 - 10

10 - 100

>100

Mission Plant

University of Arizona

PER-27: <1 Regional Aquifer Monitoring Well ID:PCE Result (ug/L)

< Result is less than the Reporting Limit

Proposed Regional Aquifer Monitoring Well

Site Activities UpdateSite Activities Update Park Park –– Euclid RP GroupEuclid RP Group

Community Advisory Board MeetingCommunity Advisory Board Meeting January 16, 2013January 16, 2013

WQARF Site ActivitiesWQARF Site Activities

ADEQ Completed Remedial Investigation ADEQ Completed Remedial Investigation (November 2011)(November 2011)

Long Term Monitoring ProgramLong Term Monitoring Program

Early Response Action (MPE)Early Response Action (MPE)

Feasibility StudyFeasibility Study

22

Long Term MonitoringLong Term Monitoring

Work Plan (October 2010)Work Plan (October 2010)

Baseline Sampling July 2011Baseline Sampling July 2011

Monthly, Quarterly, and SemiMonthly, Quarterly, and Semi--Annual SamplingAnnual Sampling

Soil Vapor (upper and lower vadose zone)Soil Vapor (upper and lower vadose zone)

Petroleum Product (Perched)Petroleum Product (Perched)

WaterWater--Level and Product Thickness Measurements Level and Product Thickness Measurements (Perched and Regional)(Perched and Regional)

Groundwater Sampling (Perched and Regional)Groundwater Sampling (Perched and Regional)

Baseline and SemiBaseline and Semi--Annual Reports (December Annual Reports (December 2011, July 2012, December 2012)2011, July 2012, December 2012)

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Early Response ActionEarly Response Action

MultiMulti--Phase Extraction System Construction Phase Extraction System Construction 2007 and 20082007 and 2008

Diesel Product (dissolved CVOCs)Diesel Product (dissolved CVOCs)

Soil VaporSoil Vapor

GroundwaterGroundwater

Pilot Phase Operation April 2008 to June 2009Pilot Phase Operation April 2008 to June 2009

Pilot Phase Operational Report (November Pilot Phase Operational Report (November 2009)2009)

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Early Response ActionEarly Response Action

Full Scale ERA Workplan (October 2010)Full Scale ERA Workplan (October 2010)

Year 1 Operation (October 2011 Year 1 Operation (October 2011 –– September September 2012)2012)

Year 2 Operation (Started January 2013)Year 2 Operation (Started January 2013)

MPE Mass removalMPE Mass removal

CVOC = Chlorinated Volatile Organic CompoundsCVOC = Chlorinated Volatile Organic Compounds

55

Pilot Phase Since Re-StartMass of CVOCs Removed - Vapor (pounds) ~ 1,400 ~ 1,500Mass of CVOCs Removed - Dissolved in Water (pounds)

0.44 0.59

Mass of CVOCs Removed - Dissolved in Diesel (pounds)

1.5 9.6

Volume of Diesel Product Removed (gallons) ~ 750 ~ 1,600 Water Discharged to Sewer (gallons) ~ 38,900 ~20, 700

Feasibility Study and Associated Feasibility Study and Associated ActivitiesActivities

Feasibility Study Work Plan (January 2013)Feasibility Study Work Plan (January 2013)

Regional Aquifer Monitoring Well InstallationRegional Aquifer Monitoring Well Installation

Regional Groundwater Model DevelopmentRegional Groundwater Model Development

Lower Vadose Zone Soil Vapor Extraction Pilot Lower Vadose Zone Soil Vapor Extraction Pilot TestingTesting

Vapor Intrusion Risk AssessmentVapor Intrusion Risk Assessment

Feasibility StudyFeasibility Study

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Remedial Objectives (RI)Remedial Objectives (RI)

To restore soil conditions to the remediation standards for non-residential use specified in A.A.C. R18-7-203 (specifically background remediation standards prescribed in R18-7-204, predetermined remediation standards prescribed by R18-7-205, or site-specific remediation standards prescribed by R18-7-206 that are applicable to the hazardous substances identified (tetrachloroethene (PCE), trichloroethene (TCE), cis-1,2-dichloroethene (cis-1,2-DCE) and trans-1,2-dichloroethene (trans-1,2-DCE), and vinyl chloride).

To protect for the use of the groundwater supply by the University of Arizona (UA) near the Park-Euclid WQARF site from contamination from the site. This action is needed for the present time and for as long as the UA wells are used for potable purposes, the resource remains available, and their use is threatened as a result of contamination from the Park-Euclid WQARF site. This action is also needed to protect potential future use of the groundwater supply for the City of Tucson, which is not expected within the next five to ten years.

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Feasibility Study RequirementsFeasibility Study Requirements

Development of a reference remedy and two Development of a reference remedy and two alternative remedies capable of meeting the alternative remedies capable of meeting the remedial objectives.remedial objectives.

Each remedy may contain multiple components Each remedy may contain multiple components to address the various hydrogeologic units.to address the various hydrogeologic units.

One alternative remedy will be more aggressive One alternative remedy will be more aggressive and one alternative less aggressive than the and one alternative less aggressive than the reference remedy.reference remedy.

Perform comparative analysis of the reference Perform comparative analysis of the reference and alternative remedies.and alternative remedies.

A Feasibility Study Report will be prepared that A Feasibility Study Report will be prepared that will present the Proposed Remedy.will present the Proposed Remedy.88

Proposed ScheduleProposed Schedule

Regional Monitoring Well (March Regional Monitoring Well (March –– October, October, 2013)2013)

LVZ Pilot Testing (April LVZ Pilot Testing (April –– August, 2013)August, 2013)

Groundwater Modeling (May 2013 Groundwater Modeling (May 2013 –– May 2014)May 2014)

Vapor Intrusion Risk Assessment (March Vapor Intrusion Risk Assessment (March –– October, 2013October, 2013

Feasibility Study (March 2013 Feasibility Study (March 2013 –– October 2014)October 2014)

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