source area csm - tceq · for future upload of gint (a software program) data from csm”. ... the...

T:\Projects\Commercial\Clients\TCEQ\Jones Road\22 131429 WO2010003 SESC Mar to Aug FY08\Task 0200 - Complete (Finish) Source Area CSM\Final CSM\Final CSM.doc

3010 BRIARPARK DRIVE, SUITE 400 • HOUSTON, TX 77042 713.996.4400 • FAX 713.996.4401 • THE SHAW GROUP INC.®

FINAL REPORT May 29, 2008 Ms. Marilyn Long, P.G. Texas Commission on Environmental Quality Remediation Division Superfund Cleanup Section (MC-136) P. O. Box 13087 Austin, Texas 78711-3087 Re: Final Source Area Conceptual Site Model 11600 Jones Road Area (Former Bell Dry Cleaner) Jones Road Superfund Site (SUP075) Houston, Texas Dear Ms. Long: Shaw Environmental, Inc. (Shaw) is pleased to present the Texas Commission on Environmental Quality (TCEQ) this Final Source Area Conceptual Site Model (CSM) prepared for the site referenced above. The work was approved in TCEQ Work Order 153-0061, Amendment 2, dated December 28, 2007, and completed under TCEQ Work Order 201-0003, Amendment 0, dated March 25, 2008. Purpose The purpose of the work as described in the original approved Work Order was defined as follows: “The purpose of this Work Order is to authorize TCEQ Contractor/Engineer, Shaw E&I, to prepare a CSM for understanding the contamination source area (11600 Jones Road) geology”. The scope of work was described as follows: “The Contractor/Engineer shall prepare a CSM to understand the source area geology. The work includes co-relation of well logs and hand entry of the data to cross section electric logs; review and edit CSM per modeler and relative to the preparation of pilot scale treatability study work plan; preparation of block diagram (fence diagram) from source area subsurface data; and conversion of paper well logs to electronic format suitable for CSM model manipulation. Contractor/Engineer shall set up ShawView for future upload of gINT (a software program) data from CSM”. Conceptual Site Model Construction Shaw prepared a site map showing all previous points of investigation in the study area (Figure 1); prepared three stratigraphic cross sections (Figures 2, 3, and 4); one fence diagram (Figure 5); and one type log (Figure 6). Geologic logs and CPT data were entered into gINT (Vision 7.0) for preparation of the cross

Final Report May 29, 2008 Ms. Marilyn Long, P.G. Texas Commission on Environmental Quality


sections. Geologic logs prepared while drilling monitor wells using hollow-stem-auger (HSA) and direct push technology (DPT) drilling methods were compared to logs prepared using CPT drilling methods. The geologic logs were prepared by site geologists, and the resultant stratigraphic interpretation appeared to be variable, compared to the CPT data, which was highly consistent. Therefore, CPT logs were used as the primary correlation tool to define the subsurface geology at the site, excluding the boring log from deep boring RS-1, which had a total depth of 107 feet below ground surface, the deepest available record of geology in the source area. Figure 6 presents a type log prepared with a geologic log from monitor well MW-8, and a log from CPT-12, which were installed in the same locations. Figure 6 shows the relationship of geologic materials recorded by site geologists to typical CPT data. A comparison of the CPT friction to tip resistance data for each location indicated that the results were nearly identical. Therefore, in order to simplify the cross sections’ visual appearance, only the tip resistance was used for correlating geologic units. Northing and easting coordinates for each of the data points were estimated from a site map prepared using Geographic Information System (GIS) data. The Source Area CSM focused on a roughly circular area with an approximate diameter of 600 feet, which corresponds to an area of 0.01 square miles. Perchloroethylene (PCE) concentrations in soil and water are represented by small colored dots and triangles on the cross sections and fence diagram as either green, yellow, or red depending upon the PCE concentration:

• Green – PCE < 0.5 parts per billion (ppb) • Yellow – PCE ≥ 0.5 ppb to ≤ 5.0 ppb • Red – PCE > 5.0 ppb

Since water samples were collected during the installation of CPT borings and monitor wells, and soil samples were collected only during the installation of DPT borings and monitor wells, the soil and groundwater PCE concentrations were projected onto the cross sections and fence diagram from nearby sample points. Soil and groundwater analytical data used for this investigation were collected during the period between August and October 2003 during installation of monitor wells and CPT/DPT soil borings. Shallow Subsurface Geology The CSM indicates that the subsurface geology was deposited in a fluvial depositional environment, as shown by discontinuous silt and sand units deposited under high to medium energy flow regimes, and thick clay units deposited under low energy flow regimes. The site is generally underlain by high plasticity clay (CH) from the ground surface to a depth of approximately 20 feet below ground surface (bgs). An interbedded zone consisting of sand (SP), silt (ML), and silty clay (CL) underlies the high plasticity clay, and extends from a depth of approximately 20 feet to 35 feet bgs. The interbedded zone appears to be laterally continuous in the study area. High plasticity clay underlies the interbedded zone, and extends from a depth of approximately 35 feet to 60 feet bgs. The high plasticity clay includes randomly distributed discontinuous sand lenses comprising less than ten percent of the high plasticity clay zone. A thick, major sand (SP) unit was encountered while installing soil boring RS-1, which extended from a depth of approximately 60 feet to 107 feet bgs (107 feet is the total depth of RS-1). Not shown in this CSM are at least six additional major sand units that underlie the site to a depth of approximately 430 feet, which is the maximum depth of investigation achieved while installing regional monitor well MW-17. These sand units comprise most of the

Final Report May 29, 2008 Ms. Marilyn Long, P.G. Texas Commission on Environmental Quality


water-bearing units of the Chicot Aquifer. Other major sand units below the Chicot Aquifer (not encountered during drilling but documented in public records) comprise the Evangeline Aquifer. PCE Distribution Figures 2 through 4 show PCE concentrations in groundwater that are generally associated with PCE concentrations detected in soil, and soil and groundwater impacted by PCE that is generally located in the vicinity of the former Bell Dry Cleaner facility. Soils directly below the former Bell Dry Cleaner facility are shown in a fence diagram (Figure 5), and most soil samples collected in the area contained PCE concentrations greater than 5 ppb. However, PCE concentrations in shallow soil and groundwater decrease in a radial manner from the facility and in most cases are below the practical laboratory quantitation limit (detection limit) near the Source Area CSM Boundary (Figure 1). Some shallow lateral and downward vertical movement (down-gradient movement) of PCE is indicated by concentrations greater than 5 ppb detected in groundwater samples collected from monitor well MW-07 (CPT-32) located across Barely Lane. Relatively short vertical migration in shallow surface soils and groundwater is contrasted by deep vertical migration of PCE within soil samples collected from soil boring RS-1 (Figure 3), indicating that PCE has migrated primarily downward in the immediate area of the facility and has impacted the first major water-bearing sand unit, and likely others below it as supported by routine quarterly groundwater monitoring in the Jones Road area. This source area CSM will be utilized by Shaw to characterize the site and prepare a remedial investigation report. The source area CSM will also be used to understand the site geology for groundwater model development, prepare a pilot study work plan for chemical oxidation and bio-enhancement remediation of the source area, and baseline risk assessment for the site. A regional CSM is currently under construction, and will detail the regional geology at deeper intervals of investigation. The source area CSM and regional CSM will be used together to further define the Jones Road geology and contaminant migration pathways. If you have any questions, or need additional information, please do not hesitate to call me at (713) 996-4571. Sincerely, Shaw Environmental, Inc.

Russell S. Perry, P.G. Project Director RSP/mfa Attachments: Figure 1 – Source Area Conceptual Site Model Study Area Figure 2 – Stratigraphic Cross Section A-A’ Figure 3 – Stratigraphic Cross Section B-B’ Figure 4 – Stratigraphic Cross Section C-C’ Figure 5 – Fence Diagram – Area Below the Former Bell Dry Cleaner Facility Figure 6 – Type Log - MW-8/CPT-12 Well Log


FFiigguurreess

11655 11620

11614

11600

1101111535

11010

11527

11528

AA

BB

CC

A'A'

B'B'

C'C'

108.00'108.00'

150.

00'

150.

00'

CONCRETEDRIVE

CONCRETEDRIVE

ONE STORYSTUCCO

ONE STORYSTUCCO

WATERWELL

WATERWELL

AS

PH

ALT

DR

IVE

AS

PH

ALT

DR

IVE

270.

5'27

0.5'

265.2'265.2'

LIGHTPOLELIGHTPOLE

LIGHTPOLELIGHTPOLE

LIGHTPOLELIGHTPOLE

STEEL SIGNSTEEL SIGN

CONCRETE DRIVE& PARKING

CONCRETE DRIVE& PARKING

POWERPOLE

POWERPOLE

POWERPOLE

POWERPOLE

POWERPOLE

POWERPOLE

2'X2'GRATEINLET

2'X2'GRATEINLET

2'X2'GRATEINLET

2'X2'GRATEINLET

POWERPOLE

POWERPOLE

71.0'71.0'

LIGHTPOLELIGHTPOLE

2'X2'GRATEINLET

2'X2'GRATEINLET

CPT-39CPT-39

CPT-35CPT-35

CPT-34CPT-34

CPT-33CPT-33

CPT-31CPT-31

CPT-26CPT-26

CPT-25CPT-25

CPT-24CPT-24

CPT-19CPT-19

CPT-18CPT-18

CPT-17CPT-17

CPT-16CPT-16

CPT-13CPT-13CPT-11CPT-11

CPT-10CPT-10

CPT-07CPT-07

CPT-06CPT-06

CPT-05CPT-05

CPT-04CPT-04

CPT-03CPT-03

CPT-02CPT-02

CPT-01CPT-01

CPT-32/MW-07CPT-32/MW-07


FOREST VALLEY DRIVEFOREST VALLEY DRIVE

JON

ES

RO

AD

JON

ES

RO

AD

BARELY LANEBARELY LANE


MW-06MW-06

MW-05MW-05

MW-04MW-04

MW-03MW-03

MW-02MW-02

MW-01MW-01

GP-9GP-9GP-8GP-8GP-7GP-7

GP-6GP-6

GP-5GP-5GP-4GP-4

RS-1RS-1 RS-2RS-2

GP-3GP-3GP-2GP-2

GP-1GP-1

GP-20GP-20

GP-19GP-19GP-18GP-18

GP-17GP-17

GP-16GP-16

GP-15GP-15

GP-14GP-14

GP-13GP-13

GP-12GP-12

GP-11GP-11

GP-10GP-10

75 FT0

SCALE

Figure 1Source Area Conceptual Site Model

Jones Road Superfund SiteHouston, Texas

131429.0200 B1 (from the Texas Commission on Environmental Quality)

11600

EXPLANATION

Monitoring well

Wells with filtration system installed(2006 data)

Well without filtration system

Property boundary

Sewer line (approximate location)

Septic fieldCross section baselineFence diagram baseline

Ditch

Source Area CSM boundary(Approximately 0.011 sq miles)

Concrete

Septic tank and pump

Cone Penetration Test

Conceptual Site Model

Fence

CPT

CSMGeoprobe ®GP

Property number

CPT location

Geoprobe location

Approximate Chicot Rotosonicwell location 2006

0 100 200 3000 100 200 3000 100 200 3000 100 200 300

0 100 200 3000 100 200 3000 100 200 300

0 100 200 300

0 100 200 300

-20

-30

-25

-15

800

-35

600

-10

700

-5

0

4002001000

-40

-55

-50

-45

-60

-65

-70300 500

CPT-01CPT-01CPT-05

CPT-05

CPT-02CPT-02

CPT-06CPT-06CPT-10CPT-10

CPT-12CPT-12

CPT-11CPT-11

CPT-32CPT-32

CPT-31CPT-31

SouthA A'North

CPT-12 CPT-11 CPT-10

CPT-05

CPT-06 CPT-01 CPT-02 CPT-32 CPT-31

DE

PTH

BE

LOW

GR

OU

ND

SU

RFA

CE

(fee

t)

DISTANCE ALONG PROFILE (feet)

CPT

USCS Silt (ML)

InterbeddedSand (SP), Silt (ML),and Silty Clay (CL)

USCS LowPlasticity Clay (CL)

USCS HighPlasticity Clay (CH)

USCS Sand (SP)

Lithology Graphics

Tip Resistance(TSF)

Cone PenetrationTest (analytical datafrom 8-9/2003)

GP Geoprobe® (analyticaldata from 10/2003)

Lithology Boundary

ApproximateLithology Boundary

A

A'

PCE Concentration> 5 ppb In SoilPCE Concentration≥ 0.5 ppb to ≤ 5 ppbIn Soil

PCE Concentration≥ 0.5 ppb to ≤ 5 ppbIn Groundwater

PCE Concentration< 0.5 ppb In Soil

PCE Concentration> 5 ppb In Groundwater

PCE Concentration< 0.5 ppb In Groundwater

GP-5GP-5GP-6GP-6 GP-7GP-7

CPT-03CPT-03

Vertical Exaggeration: 3.5x

Horizontal Scale (feet)

CPT data

CPT-10

PLATE NUMBER

131429

JOB NUMBER

Jones RoadSuperfund Site

Houston TX

0 184.5

Explanation

Figure 2Stratigraphic Cross

Section A-A'North-South Baseline

Plate A-1

Site Map Scale 1 inch equals 440 feet

1314

29.0

200

B3

GP-5 CPT-03GP-6GP-7

0 100 200 3000 100 200 3000 100 200 300 0 100 200 300 0 100 200 300


CPT data

CPT-06

PLATE NUMBER

131429

JOB NUMBER


Houston TX

0 162

Explanation


Section B-B'West-East Baseline

Plate A-2


CPT-19CPT-19

CPT-20CPT-20

CPT-06CPT-06

CPT-07CPT-07

RS-1RS-1

CPT-13CPT-13

1314

29.0

200

B2

Lithology Graphics

Tip Resistance(TSF)

Lithology Boundary




USCS Clayey Sand (SC)


USCS Sand (SP)

USCS Silty Sand (SM)

B'

B


GP-3GP-3

GP-4GP-4CPT-18CPT-18

GP-6GP-6

GP-2GP-2






CPT Cone PenetrationTest (analytical datafrom 8-9/2003)


RS Rotosonic (analyticaldata from 7/2006)

0

-5

-10

-15

CPT-20

-25

-20

CPT-19 CPT-06RS-1

CPT-07

1000 200 300 400 500 600

CPT-13

700

-50

-55

-60

-65

-70

-75

-80

-85

-90

-95

-100

-105

-110

-45

-30

-35

-40


EastD

EP

TH B

ELO

W G

RO

UN

D S

UR

FAC

E (f

eet)

B B'

West

NORECOVERY

NORECOVERY

NORECOVERY

NORECOVERY

GP-6 GP-4 GP-3 GP-2CPT-18

0 100 200 300 0 100 200 3000 100 200 300 0 100 200 3000 100 200 300

-20

-30

-25

-15

800

-35

600

-10

700

-5

0

4002001000

-40

-55

-50

-45

-60

-65

-70

-75

-80

-85300 500

EastC C'West

CPT-02 CPT-04GP-11 GP-14 GP-16 CPT-33

CPT-25CPT-24

CPT-34 CPT-39

DE

PTH

BE

LOW

GR

OU

ND

SU

RFA

CE

(fee

t)


USCS Silt (ML)




USCS Sand (SP)

Lithology Graphics

Tip Resistance(TSF)

Lithology Boundary


C

C'






CPT-34CPT-34

CPT-25CPT-25

CPT-24CPT-24GP-11GP-11

GP-14GP-14

GP-16GP-16CPT-33CPT-33

CPT-02CPT-02

CPT-39CPT-39

CPT-04CPT-04

CPT Cone PenetrationTest (analytical datafrom 8-9/2003)




CPT data

CPT-39

PLATE NUMBER

131429

JOB NUMBER


Houston TX

0 184.5

Explanation


Section C-C'West-East Baseline

Plate A-3


1314

29.0

200

B4

-20-20

-30-30

-25-25

-15-15

-35-35

-10-10

-5-5

00

-20-20

-30-30

-25-25

-15-15

-35-35

-10-10

-5-5

0

-20-20

-30-30

-25-25

-15-15

-35-35

-10-10

-5-5

00

-20-20

-30-30

-25-25

-15-15

-35-35

-10-10

-5-5

00

1314

29.0

200

B5

-20

-30

-25

-15

-35

-10

-5

0D

EP

TH B

ELO

W G

RO

UN

D S

UR

FAC

E (f

eet)

GP-8GP-8

GP-7GP-7

GP-6GP-6

GP-4GP-4

GP-3GP-3

Interbedded zoneas identified in CPTinvestigation


Lithology Graphics

Lithology Boundary


GP-6GP-6GP-4GP-4

GP-3GP-3

GP-8GP-8

GP-7GP-7

Vertical Scale: 1" = 10'

PLATE NUMBER

131429

JOB NUMBER


Houston TX

Figure 5Fence Diagram of

Source Area ConceptualSite Model

Plate A-6


26'26'

56'56'

40'40'

76'76'

92'92'

PCE Concentration> 5 ppb In SoilPCE Concentration≥ 0.5 ppb to ≤ 5 ppbIn SoilPCE Concentration< 0.5 ppb In Soil


0 100 200 300

Lithology CPT data

MW-8/CPT12

PLATE NUMBER

128885

JOB NUMBER


Houston TX

Explanation

Figure 6MW-8/CPT12

Well Log

Plate A-4

1314

29.0

200

A1

CPT

Lithology Graphics

Tip Resistance(TSF)

Cone PenetrationTest

amsl above meanseal level

Lithology Boundary


USCS Silt (ML)


USCS Clayey Sand (SC)


USCS Sand (SP)

USCS Silty Sand (SM)

110

100

105

115

95

120

125

130

90

75

80

85

70

110

100

105

115

95

120

125

130

90

75

80

85

70

MW-8/CPT-12E

LEV

ATI

ON

(fee

t am

sl)

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