Ground Water Classification Test Field Procedure … water classification test field procedure...
Transcript of Ground Water Classification Test Field Procedure … water classification test field procedure...
NCRA_TM-GWCLASSIFICATIONPROCEDURE_2011-0401.DOCX 1
T E C H N I C A L M E M O R A N D U M
Ground Water Classification Test Field Procedure (Yield Test) North Cavalcade Street Superfund Site, Houston, Texas PREPARED FOR: Camille Hueni/EPA Region 6 RPM
PREPARED BY: CH2M HILL
DATE: April 1, 2011 TASK ORDER: U. S. Environmental Protection Agency
Remedial Action Contract (RAC) EP-W-06-021 CH2M HILL Task Order Number 0047
DOCUMENT CONTROL NUMBER:
DCN 0047-02018
The purpose of this technical memorandum (TM) is to specify the procedures for completing well yield tests at four monitor wells completed in the water-bearing interbedded zone at the North Cavalcade Street Superfund Site. Well yield testing will be performed to determine the proper ground water classification for the interbedded zone in accordance with the categories specified by the Texas Risk Reduction Program (TRRP). The procedures outlined in this TM are derived from the Texas Commission on Environmental Quality (TCEQ) regulatory guidance document Groundwater Classification (RG-366/TRRP-8, revised March 2010). This version of this TM incorporates EPA comments received March 31, 2011.
Background The well testing data and limited water quality data included in the report entitled “Analysis of CPT/ROST and Well Testing Data” (Kordzi, 1999) suggests that the shallow aquifer and interbedded zone ground water could likely meet the requirements to be considered a Class 2 Ground Water Resource. As noted in the Focused Feasibility Study, however, additional aquifer testing and water quality data would be required to determine definitively whether the water should be considered a Class 2 Ground Water Resource (CH2M HILL, 2008). Well yield tests will be performed, therefore, to confirm whether the interbedded zone in particular should be considered a Class 2 or Class 3 ground water resource under the TRRP specifications. The interbedded zone will most likely remain a Class 2 ground water resource after these tests, but it is expected the tests will demonstrate decreased sustained production in the interbedded zone from east to west, particularly in the offsite downgradient area.
Testing Locations Well yield tests will be performed at four monitoring wells in a line roughly east-west across the site. The wells will be tested to determine the ground water classification of the interbedded zone and to assess whether or not the classification changes across the site. The
003097
GROUND WATER CLASSIFICATION TEST FIELD PROCEDURE (YIELD TEST) NORTH CAVALCADE STREET SUPERFUND SITE, HOUSTON, TEXAS
NCRA_TM-GWCLASSIFICATIONPROCEDURE_2011-0401.DOCX 2
four wells to be tested are MW-30I, MW-42I, MW-47I, and MW-52I. The locations of these four wells are marked (with red circles) on the attached Figure 1. Recent field forms for each well from the November/ December 2010 well installation and sampling program, including draft well construction diagrams, draft soil boring logs, well development logs, and well purge and sampling field data sheets , are provided as Attachment A to this TM.
Test Procedures The well yield test method to be utilized is identified as Method 2a: Well Yield by Cyclic Discharge in RG-366/TRRP-8. This method is primarily used to test well yield near the Class 2/Class 3 boundary in relatively low-yield ground water bearing units. Method 2a is a cyclic bail down – recovery test. The following procedures are specified from RG-366/TRRP-8 for Method 2a:
1. The monitor well must be fully-penetrating of the ground water zone, have a minimum diameter of 2 inches, and be constructed consistent with the requirements of 16 Texas Administrative Code (TAC) §76.1000-76.1009.
2. Measure the static water level in the well and total well depth. Calculate the water column height in the well, and then determine the depth-to-water level measurement that represents 90% of the initial height of the water column in the well.
3. Using a bailer or a pump, evacuate all water from the well. Record the volume of water removed (to within the nearest 0.1 gallon). Measure the static water level and the time at which the well went dry (for confirmation) immediately upon completion of water removal.
4. Monitor recovery of the water level in the well. Also, record the time of water level measurements during the recovery period as an elapsed time (in minutes/seconds) from the initial time measurement of the completion of water removal. Continue monitoring water level recovery in the well up to the point at which the water level recovers to a specified level that is no greater than 90% of the height of the initial static water level (recorded in Step 2).
5. Immediately upon recovery of the water level in the well to the specified level (not greater than 90% of the initial static water level), repeat steps 3 and 4 twice. This method requires a minimum of three bail-down/recovery cycles to complete the well yield test calculations.
6. After the third recovery period, evacuate all the water from the well a fourth time and record the volume of water removed. A sample for Total Dissolved Solids (TDS) will be collected from the water removed during the fourth bail-down/removal cycle. The testing is now completed.
At the end of testing, ensure that the total volume of water removed is recorded. Ensure that complete and accurate records of the testing are kept in the field logbook. The water level data, recovery time, and volume of water removed from the well are necessary to determine the well yield and ground water classification.
003098
GROUND WATER CLASSIFICATION TEST FIELD PROCEDURE (YIELD TEST) NORTH CAVALCADE STREET SUPERFUND SITE, HOUSTON, TEXAS
NCRA_TM-GWCLASSIFICATIONPROCEDURE_2011-0401.DOCX 3
Works Cited CH2M HILL, 2008. Focused Feasibility Study Report. North Cavalcade Street Superfund Site, Houston, Texas. Prepared for the U. S. Environmental Protection Agency under Remedial Action Contract No. EP-W-06-021, Task Order No. 0015-RIFS-0678. June 2008.
Joe Kordzi, Charles D. Abshire and Ken Johnson (Kordzi), 1999. Analysis of CPT/ROST and Well Testing Data Acquired at the North Cavalcade Superfund Site. January 5, 1999.
003099
Cavalcade St
Har
dy S
t
Elys
ian
St
Moody St
Approximate Location ofPecore Fault Line
MW-28IBenzene - 6.9Naphthalene - 553
MW-55IBenzene - 4.3 JNaphthalene - 2420
MW-29IBenzene - 155Naphthalene - 9870
MW-54IBenzene - 54.4Naphthalene - 9210
MW-30IBenzene - 678Naphthalene - 14500
MW-40IBenzene - 0.5 U
Naphthalene - 1.4 J
MW-43IBenzene - 32.9Naphthalene - 11100 JL
MW-42IBenzene - 23.3Naphthalene - 8460
MW-41IBenzene - 3.4
Naphthalene - 49.4
MW-60IBenzene - 11
Naphthalene - 4510MW-56I
Benzene - 281Naphthalene - 10300
MW-36IBenzene - 0.5 UNaphthalene - 7.7
MW-35IBenzene - 537Naphthalene - 15900
MW-59IBenzene - 46.8Naphthalene - 7610
MW-58IBenzene - 76
Naphthalene - 10300
MW-33IBenzene - 90.7Naphthalene - 8160
MW-57IBenzene - 26.2Naphthalene - 9850
MW-32IBenzene - 0.5 UNaphthalene - 2180
MW-31IBenzene - 0.5 UNaphthalene - 4.4 J
MW-39IBenzene - 355Naphthalene - 15600
MW-38IBenzene - 4.9
Naphthalene - 2720
MW-37IBenzene - 0.5 UNaphthalene - 1960
MW-34IBenzene - 198Naphthalene - 15500
MW-44IBenzene - 0.5 UNaphthalene - 9.3
MW-48IBenzene - 0.5 UNaphthalene - 120
MW-51IBenzene - 0.5 UNaphthalene - 2
MW-50IBenzene - 0.5 U
Naphthalene - 5.4
MW-49IBenzene - 0.5 UNaphthalene - 0.65 U
MW-52IBenzene - 0.5 UNaphthalene - 7.1
MW-47IBenzene - 0.5 UNaphthalene - 10.1
MW-46IBenzene - 14.8Naphthalene - 2620
MW-45IBenzene - 0.5 UNaphthalene - 2.7 J
FIGURE 2-7Dissolved Benzene Naphthalene in theInterbedded Sand (December 2010)North Cavalcade Superfund SiteRemedial DesignHouston, Harris County, Texas
0 150 300
Approximate scale in feet
NOTES:U - Not detected at reported quantitation limitJ - Estimated valueL - Reported concentration is below the reported quantitation limitNaphthalene and Benzene concentrations in micrograms per liter (ug/L)
Monitoring WellApproximate Extent of NAPL Product in the Shallow Sand (2004 Data)Approximate Extent of Residual Product in the Shallow Sand (2004 Data)In-Situ Stabilization Areas
\\HOLLISTER\PROJ\CAVALCADE\MAPFILES\RESULTS_BENZENE-NAPHTHALENE_INTERBEDDED_RA_WELLS.MXD GTWIGG 2/14/2011 12:57:32
LEGEND
003100
20.7 ft BTOC, 18.0 ft BGS TOP OF BENTONITE SEAL
26.7 ft BTOC, 24.0 ft BGS TOP OF FILTER PACK
38.7 ft BTOC, 36.0 ft BGS BOTTOM OF BOREHOLE
26.1 ft BTOC, 23.3 ft BGS
36.1 ft BTOC, 33.3 ft BGS
36.6 ft BTOC, 33.8 ft BGS
North Cavalcade Superfund Site RA
Carrie Wallestad/DFW
Gainco Drilling, Driller: Stas Grover
3126267.33
MW30I
11/30/2010
51.71 ft
48.97 ft
13857994.84
HSA B61, 8-in OD x 4 1/4-in ID auger
Sch 40 PVC
2-in (ID)
slotted PVC
0.01-in
20/40 Sand
6 50-lb bags
3/8" Bentonite Chips
1 50-lb bag
8-in
38.7 ft BTOC, 36.0 ft BGS
TOP OF CASING
PORTLAND CEMENT GROUT
STICK-UP MONUMENT
WELL DIAGRAM IS NOT TO SCALE
NOTES:ALL DEPTHS ARE REPORTED AS FEETBELOW TOP OF CASING (ft BTOC), FEETBELOW GROUND SURFACE (ft BGS).
BOTTOM OF WELL CASING
BOTTOM OF SCREEN
TOP OF SCREEN
Houston, Texas
PROJECT NUMBER: BORING NUMBER:
WELL COMPLETION DIAGRAM
LOCATION:PROJECT:
STATIC WATER LEVEL:
LOGGED BY:
DRILLING METHOD:
FINISH:GROUND ELEVATION (NGVD29):
TOP OF CASING ELEVATION (NGVD29): NORTHING (NAD83 Z 20):
DRILLING CONTRACTOR:
11/30/2010START:
EASTING (NAD83 Z 20):
406762
10.29 ft BTOC (12/14/2010)
WELL CONSTRUCTION DETAILS
CASING MATERIAL:
CASING DIAMETER:
SCREEN TYPE:
SLOT SIZE:
FILTER PACK TYPE:
FILTER PACK QTY:
SEAL TYPE:
SEAL QTY:
BOREHOLE DIAMETER:
BOREHOLE DEPTH:
003102
Borehole advanced usingDirect Push Technology to 20ft bgs, followed by Hollow-Stem Auger drilling to 36 ftbgs.
SILTY CLAY (CL)dry, grayish brown (10YR 4/2), medium plasticity,stiff
SANDY CLAY with SILT (CL)dry, grayish brown (10YR 5/2), medium plasticity,stiffcolor grades to light gray (10YR 7/1) with brownishyellow mottling (10YR 6/6) at 9 ft bgs
CLAYEY SAND (SC)moist, light gray (10YR 7/1) to yellow (10YR 7/6),very fine grained, softSAND (SP)moist, light gray (10YR 7/1), very fine grained,looseSAND (SP)wet, very pale brown (10YR 7/4) to light gray(10YR 7/1), very fine grained to fine grained
No Recovery
SAND (SP)wet, light gray (10YR 7/1), fine grained, <1-in thickvery dark grayish brown clay (10YR 3/2)No Recovery
SAND (SP)wet, pale brown (10YR 6/2), loose, fine grainedCLAY (CL)moist, yellowish red (5YR 5/6), firm
SILTY SAND (SM)wet, reddish brown (5YR 5/4), fine, looseCLAY AND SILT (CL/ML)moist, pink (7.5YR 7/4) and pale yellow (2.5Y 8/2),stiff, interbedded layersSILTY SAND (SM)wet, light reddish brown (5YR 6/4), fine grained,poorly sorted, staining in 1-cm bands, gray at 29.5ft bgs, moderate odor
CL
CL
SC
SP
SP
NR
SP
NR
SP
CL
SM
CL/ML
SM
Stick Up
CEMENT
GROUT
BENTONITE
FILTERPACK
SCREEN
4.0
4.0
4.0
3.0
4.0
0.0
1.5
2.5
2.5
2.5
0.0
4.0
8.0
12.0
15.0
19.0
20.0
22.5
25.0
27.5
LOGGER : Carrie Wallestad/DFW
PROJECT : North Cavalcade Superfund Site RA
DEPTH OF CASING,DRILLING
RATE, DRILLINGFLUID LOSS,
TESTS, &INSTRUMENTATION
DE
PTH
BE
LOW
GR
OU
ND
SU
RFA
CE
(ft)
USCS
COORDINATES : 13857994.8 N 3126267.3 E DRILLING METHOD AND EQUIPMENT : HSA B61, 8-in OD x 4 1/4-in ID auger
SOIL DESCRIPTION
SOIL NAME, USCS GROUP SYMBOL,
DENSITY OR CONSISTENCY, SOILSTRUCTURE, MINERALOGY
COLOR,MOISTURE CONTENT, RELATIVE
Soil Boring Log
MW30I
LOCATION : Houston, TX
DRILLING CONTRACTOR : Gainco Drilling, Driller: Stas Grover
PROJECT NUMBER: BORING NUMBER:
END: 11/30/2010
SHEET 1 OF 2406762
COMMENTS WELL DIAGRAM
10.29 ft BTOC (12/14/2010)
ELE
VA
TIO
Nft
AM
SL
START: 11/30/2010
5
10
15
20
25
30
45
40
35
30
25
20
GR
AP
HIC
LO
G
ELEVATION : 48.97 ft
REC
OVE
RY
(ft)
INTE
RV
AL
(ft)
STATIC WATER LEVEL:
003103
Boring terminated at 36 ft bgs
CLAYEY SAND (SC)moist, reddish yellow (7.5YR 6/6), fine grained,poorly graded, moderate odorCLAY (CL)moist, reddish yellow (7.5YR 6/6), firmSILTY SAND (SM)moist, reddish yellow (7.5YR 6/6), poorly graded,fine grained, moderate odorCLAY (CL)moist, reddish yellow (5YR 6/6), mottled with lightgray (10YR 7/1), stiff
SC
CL
SM
CL
0.5ft SUMP
2.5
1.0
35.0
30.0
32.5
LOGGER : Carrie Wallestad/DFW
PROJECT : North Cavalcade Superfund Site RA
DEPTH OF CASING,DRILLING
RATE, DRILLINGFLUID LOSS,
TESTS, &INSTRUMENTATION
DE
PTH
BE
LOW
GR
OU
ND
SU
RFA
CE
(ft)
USCS
COORDINATES : 13857994.8 N 3126267.3 E DRILLING METHOD AND EQUIPMENT : HSA B61, 8-in OD x 4 1/4-in ID auger
SOIL DESCRIPTION
SOIL NAME, USCS GROUP SYMBOL,
DENSITY OR CONSISTENCY, SOILSTRUCTURE, MINERALOGY
COLOR,MOISTURE CONTENT, RELATIVE
Soil Boring Log
MW30I
LOCATION : Houston, TX
DRILLING CONTRACTOR : Gainco Drilling, Driller: Stas Grover
PROJECT NUMBER: BORING NUMBER:
END: 11/30/2010
SHEET 2 OF 2406762
COMMENTS WELL DIAGRAM
10.29 ft BTOC (12/14/2010)
ELE
VA
TIO
Nft
AM
SL
START: 11/30/2010
35
40
45
50
55
60
15
10
5
0
-5
-10
GR
AP
HIC
LO
G
ELEVATION : 48.97 ft
REC
OVE
RY
(ft)
INTE
RV
AL
(ft)
STATIC WATER LEVEL:
003104
22.7 ft BTOC, 23.0 ft BGS TOP OF BENTONITE SEAL
24.7 ft BTOC, 25.0 ft BGS TOP OF FILTER PACK
32.2 ft BTOC, 32.5 ft BGS BOTTOM OF BOREHOLE
26.2 ft BTOC, 26.5 ft BGS
31.2 ft BTOC, 31.5 ft BGS
31.7 ft BTOC, 32.0 ft BGS
North Cavalcade Superfund Site RA
Josh McFarlain/HOU
Gainco Drilling, Driller: Walter Georg
3125626.17
MW42I
12/10/2010
47.45 ft
47.78 ft
13857987.30
HSA with Geoprobe 6620, 8-in OD x 4 1/4-in ID auger
Sch 40 PVC
2-in (ID)
slotted PVC
0.01-in
20/40 Sand
4 50-lb bags
3/8" Bentonite Chips
1 50-lb bag
8-in
32.2 ft BTOC, 32.5 ft BGS
TOP OF CASING
FLUSH MONUMENT
WELL DIAGRAM IS NOT TO SCALE
NOTES:ALL DEPTHS ARE REPORTED AS FEETBELOW TOP OF CASING (ft BTOC), FEETBELOW GROUND SURFACE (ft BGS).
BOTTOM OF WELL CASING
BOTTOM OF SCREEN
TOP OF SCREEN
PORTLAND CEMENT GROUT
Houston, Texas
PROJECT NUMBER: BORING NUMBER:
WELL COMPLETION DIAGRAM
LOCATION:PROJECT:
STATIC WATER LEVEL:
LOGGED BY:
DRILLING METHOD:
FINISH:GROUND ELEVATION (NGVD29):
TOP OF CASING ELEVATION (NGVD29): NORTHING (NAD83 Z 20):
DRILLING CONTRACTOR:
12/14/2010START:
EASTING (NAD83 Z 20):
406762
8.2 ft BTOC (12/17/2010)
WELL CONSTRUCTION DETAILS
CASING MATERIAL:
CASING DIAMETER:
SCREEN TYPE:
SLOT SIZE:
FILTER PACK TYPE:
FILTER PACK QTY:
SEAL TYPE:
SEAL QTY:
BOREHOLE DIAMETER:
BOREHOLE DEPTH:
003107
Borehole advanced usingDirect Push Technology to 35ft bgs, followed by Hollow-Stem Auger drilling to 32.5 ftbgs.
CLAYEY SILT (ML)dry, very dark brown (10YR 2/2), organic materialat surface (grass and roots)SILTY SAND (SM)dry, gray (10YR 6/1), medium denseSILTY CLAYEY SAND (SM TO SC)dry, gray (10YR 6/1), medium dense, very finegrainedNo Recovery
SILTY CLAYEY SAND (SM TO SC)dry, light gray to pale brown (10YR 7/2 to 10YR8/4), medium dense, very fine grained
No Recovery
SANDY CLAY (CL)moist, light gray to very pale brown (10YR 7/2 to10YR 8/4), medium firm, medium plasticity, veryfine grained sandSILTY SAND (SM)wet, very pale brown (10YR 8/2), medium dense,very fine grainedNo Recovery
SAND (SP)wet, light gray to yellowish brown (10YR 7/2 to10YR 6/6), medium dense, very fine grained
CLAY (CH)dry, yellowish red with light gray (10YR 5/6 with10YR 7/2), very stiff, high plasticity
SILT (ML)wet, yellowish brown (10YR 5/6)CLAY (CH)dry, yellowish red with light gray (10YR 5/6 with10YR 7/2), very stiff, high plasticity, wetinterbedded silty zone between 26.5 and 26.7 ftbgs
Soil Description on next page
ML
SM
SM-SC
NR
SM-SC
NR
CL
SM
NR
SP
CH
ML
CH
ML
CEMENT
GROUT
BENTONITE
FILTERPACK
SCREEN
3.0
3.0
3.0
5.0
5.0
5.0
0.0
5.0
10.0
15.0
20.0
25.0
LOGGER : Josh McFarlain/HOU
PROJECT : North Cavalcade Superfund Site RA
DEPTH OF CASING,DRILLING
RATE, DRILLINGFLUID LOSS,
TESTS, &INSTRUMENTATION
DE
PTH
BE
LOW
GR
OU
ND
SU
RFA
CE
(ft)
USCS
COORDINATES : 13857987.3 N 3125626.2 E DRILLING METHOD AND EQUIPMENT : HSA with Geoprobe 6620, 8-in OD x 4 1/4-in ID auger
SOIL DESCRIPTION
SOIL NAME, USCS GROUP SYMBOL,
DENSITY OR CONSISTENCY, SOILSTRUCTURE, MINERALOGY
COLOR,MOISTURE CONTENT, RELATIVE
Soil Boring Log
MW42I
LOCATION : Houston, TX
DRILLING CONTRACTOR : Gainco Drilling, Driller: Walter Georg
PROJECT NUMBER: BORING NUMBER:
END: 12/14/2010
SHEET 1 OF 2406762
COMMENTS WELL DIAGRAM
8.2 ft BTOC (12/17/2010)
ELE
VA
TIO
Nft
AM
SL
START: 12/10/2010
5
10
15
20
25
30
45
40
35
30
25
20
GR
AP
HIC
LO
G
ELEVATION : 47.78 ft
REC
OVE
RY
(ft)
INTE
RV
AL
(ft)
STATIC WATER LEVEL:
003108
Boring terminated at 32.5 ftbgs
SILT (ML)wet, yellowish brown (10YR 5/6), trace very finegrained sandSILTY SAND (SM)wet, yellowish brown (10YR 5/6), medium dense,very fine grainedCLAY (CH)dry, brown (10YR 5/3), very stiff, high plasticity
SM
CH
5.0
35.0
30.0
LOGGER : Josh McFarlain/HOU
PROJECT : North Cavalcade Superfund Site RA
DEPTH OF CASING,DRILLING
RATE, DRILLINGFLUID LOSS,
TESTS, &INSTRUMENTATION
DE
PTH
BE
LOW
GR
OU
ND
SU
RFA
CE
(ft)
USCS
COORDINATES : 13857987.3 N 3125626.2 E DRILLING METHOD AND EQUIPMENT : HSA with Geoprobe 6620, 8-in OD x 4 1/4-in ID auger
SOIL DESCRIPTION
SOIL NAME, USCS GROUP SYMBOL,
DENSITY OR CONSISTENCY, SOILSTRUCTURE, MINERALOGY
COLOR,MOISTURE CONTENT, RELATIVE
Soil Boring Log
MW42I
LOCATION : Houston, TX
DRILLING CONTRACTOR : Gainco Drilling, Driller: Walter Georg
PROJECT NUMBER: BORING NUMBER:
END: 12/14/2010
SHEET 2 OF 2406762
COMMENTS WELL DIAGRAM
8.2 ft BTOC (12/17/2010)
ELE
VA
TIO
Nft
AM
SL
START: 12/10/2010
35
40
45
50
55
60
15
10
5
0
-5
-10
GR
AP
HIC
LO
G
ELEVATION : 47.78 ft
REC
OVE
RY
(ft)
INTE
RV
AL
(ft)
STATIC WATER LEVEL:
003109
23.5 ft BTOC, 24.0 ft BGS TOP OF BENTONITE SEAL
26.5 ft BTOC, 27.0 ft BGS TOP OF FILTER PACK
35.5 ft BTOC, 36.0 ft BGS BOTTOM OF BOREHOLE
27.7 ft BTOC, 28.2 ft BGS
32.7 ft BTOC, 33.2 ft BGS
33.2 ft BTOC, 33.7 ft BGS
North Cavalcade Superfund Site RA
Roger Gomez/SAN
Gainco Drilling, Driller: Stas Grover
3125390.52
MW47I
11/22/2010
47.73 ft
48.25 ft
13857877.22
HSA with Geoprobe 6620, 7-in OD x 3 3/4-in ID auger
Sch 40 PVC
2-in (ID)
slotted PVC
0.01-in
20/40 Sand
6 50-lb bags
3/8" Bentonite Chips
1 50-lb bag
7-in
35.5 ft BTOC, 36.0 ft BGS
TOP OF CASING
FLUSH MONUMENT
WELL DIAGRAM IS NOT TO SCALE
NOTES:ALL DEPTHS ARE REPORTED AS FEETBELOW TOP OF CASING (ft BTOC), FEETBELOW GROUND SURFACE (ft BGS).
BOTTOM OF WELL CASING
BOTTOM OF SCREEN
TOP OF SCREEN
PORTLAND CEMENT GROUT
Houston, Texas
PROJECT NUMBER: BORING NUMBER:
WELL COMPLETION DIAGRAM
LOCATION:PROJECT:
STATIC WATER LEVEL:
LOGGED BY:
DRILLING METHOD:
FINISH:GROUND ELEVATION (NGVD29):
TOP OF CASING ELEVATION (NGVD29): NORTHING (NAD83 Z 20):
DRILLING CONTRACTOR:
11/22/2010START:
EASTING (NAD83 Z 20):
406762
9.35 ft BTOC (12/6/2010)
WELL CONSTRUCTION DETAILS
CASING MATERIAL:
CASING DIAMETER:
SCREEN TYPE:
SLOT SIZE:
FILTER PACK TYPE:
FILTER PACK QTY:
SEAL TYPE:
SEAL QTY:
BOREHOLE DIAMETER:
BOREHOLE DEPTH:
003112
Borehole advanced usingDirect Push Technology to 38ft bgs, followed by Hollow-Stem Auger drilling to 36 ftbgs.
SOILdry, very dark gray (10YR 3/1), stiff, some gravels
No Recovery
No Recovery
SANDY CLAY (CL)dry, yellowish brown (10YR 5/6) with brownishyellow mottling, stiff, medium plasticity
SILTY SAND (SM)moist, gray (10YR 6/1), loose, very fine grained,well sorted
SILTY SAND (SM)wet, gray (10YR 6/1), loose very fine grained, wellsorted
SILTY SAND (SM)wet, light brownish gray (10YR 6/2), mediumdense, trace clay, low plasticity, medium grained,well sortedNo Recovery
SILTY SAND (SM)wet, light brownish gray (10YR 6/2), mediumdense, trace clay, low plasticity, medium grained,well sortedCLAY (CH)dry to moist, red (2.5YR 4/6), high plasticity, verystiffSLOUGHSILTY CLAY (CL)wet, red (2.5YR 4/6), soft, medium plasticityCLAY (CH)dry, red (2.5YR 4/6), hard, high plasticity
SOIL
NR
NR
CL
SM
SM
SM
NR
SM
CH
NR
CL
CH
CEMENT
GROUT
BENTONITE
FILTERPACK
SCREEN
2.5
2.0
4.0
2.0
3.0
1.5
2.0
3.0
0.0
0.0
4.0
8.0
12.0
14.0
18.0
20.0
24.0
28.0
LOGGER : Roger Gomez/SAN
PROJECT : North Cavalcade Superfund Site RA
DEPTH OF CASING,DRILLING
RATE, DRILLINGFLUID LOSS,
TESTS, &INSTRUMENTATION
DE
PTH
BE
LOW
GR
OU
ND
SU
RFA
CE
(ft)
USCS
COORDINATES : 13857877.2 N 3125390.5 E DRILLING METHOD AND EQUIPMENT : HSA with Geoprobe 6620, 7-in OD x 3 3/4-in ID auger
SOIL DESCRIPTION
SOIL NAME, USCS GROUP SYMBOL,
DENSITY OR CONSISTENCY, SOILSTRUCTURE, MINERALOGY
COLOR,MOISTURE CONTENT, RELATIVE
Soil Boring Log
MW47I
LOCATION : Houston, TX
DRILLING CONTRACTOR : Gainco Drilling, Driller: Stas Grover
PROJECT NUMBER: BORING NUMBER:
END: 11/22/2010
SHEET 1 OF 2406762
COMMENTS WELL DIAGRAM
9.35 ft BTOC (12/6/2010)
ELE
VA
TIO
Nft
AM
SL
START: 11/22/2010
5
10
15
20
25
30
45
40
35
30
25
20
GR
AP
HIC
LO
G
ELEVATION : 48.25 ft
REC
OVE
RY
(ft)
INTE
RV
AL
(ft)
STATIC WATER LEVEL:
003113
Boring terminated at 36 ft bgs
CLAYEY SILT (ML)wet, red (2.5YR 4/6), soft, low plasticity
CLAY (CH)dry, dark red (2.5YR 3/6), hard
CLAY (CH)dry, dark red (2.5YR 3/6), hard, high plasticity
ML
CH
CH
0.5ft SUMPBENTONITE
2.0
2.0
4.0
38.0
30.0
32.0
34.0
LOGGER : Roger Gomez/SAN
PROJECT : North Cavalcade Superfund Site RA
DEPTH OF CASING,DRILLING
RATE, DRILLINGFLUID LOSS,
TESTS, &INSTRUMENTATION
DE
PTH
BE
LOW
GR
OU
ND
SU
RFA
CE
(ft)
USCS
COORDINATES : 13857877.2 N 3125390.5 E DRILLING METHOD AND EQUIPMENT : HSA with Geoprobe 6620, 7-in OD x 3 3/4-in ID auger
SOIL DESCRIPTION
SOIL NAME, USCS GROUP SYMBOL,
DENSITY OR CONSISTENCY, SOILSTRUCTURE, MINERALOGY
COLOR,MOISTURE CONTENT, RELATIVE
Soil Boring Log
MW47I
LOCATION : Houston, TX
DRILLING CONTRACTOR : Gainco Drilling, Driller: Stas Grover
PROJECT NUMBER: BORING NUMBER:
END: 11/22/2010
SHEET 2 OF 2406762
COMMENTS WELL DIAGRAM
9.35 ft BTOC (12/6/2010)
ELE
VA
TIO
Nft
AM
SL
START: 11/22/2010
35
40
45
50
55
60
15
10
5
0
-5
-10
GR
AP
HIC
LO
G
ELEVATION : 48.25 ft
REC
OVE
RY
(ft)
INTE
RV
AL
(ft)
STATIC WATER LEVEL:
003114
19.8 ft BTOC, 20.0 ft BGS TOP OF BENTONITE SEAL
21.8 ft BTOC, 22.0 ft BGS TOP OF FILTER PACK
29.8 ft BTOC, 30.0 ft BGS BOTTOM OF BOREHOLE
24.0 ft BTOC, 24.2 ft BGS
29.0 ft BTOC, 29.2 ft BGS
29.5 ft BTOC, 29.7 ft BGS
North Cavalcade Superfund Site RA
Roger Gomez/SAN
Gainco Drilling, Driller: Margarito Estrada
3124779.30
MW52I
11/30/2010
46.87 ft
47.10 ft
13857832.74
HSA with Geoprobe 6620, 7 1/4-in OD x 3 3/4-in ID auger
Sch 40 PVC
2-in (ID)
slotted PVC
0.01-in
20/40 Sand
3.5 50-lb bags
3/8" Bentonite Chips
1 50-lb bag
8-in
29.8 ft BTOC, 30.0 ft BGS
TOP OF CASING
FLUSH MONUMENT
WELL DIAGRAM IS NOT TO SCALE
NOTES:ALL DEPTHS ARE REPORTED AS FEETBELOW TOP OF CASING (ft BTOC), FEETBELOW GROUND SURFACE (ft BGS).
BOTTOM OF WELL CASING
BOTTOM OF SCREEN
TOP OF SCREEN
PORTLAND CEMENT GROUT
Houston, Texas
PROJECT NUMBER: BORING NUMBER:
WELL COMPLETION DIAGRAM
LOCATION:PROJECT:
STATIC WATER LEVEL:
LOGGED BY:
DRILLING METHOD:
FINISH:GROUND ELEVATION (NGVD29):
TOP OF CASING ELEVATION (NGVD29): NORTHING (NAD83 Z 20):
DRILLING CONTRACTOR:
11/30/2010START:
EASTING (NAD83 Z 20):
406762
10.05 ft BTOC (12/9/2010)
WELL CONSTRUCTION DETAILS
CASING MATERIAL:
CASING DIAMETER:
SCREEN TYPE:
SLOT SIZE:
FILTER PACK TYPE:
FILTER PACK QTY:
SEAL TYPE:
SEAL QTY:
BOREHOLE DIAMETER:
BOREHOLE DEPTH:
003117
Borehole advanced usingDirect Push Technology to 35ft bgs, followed by Hollow-Stem Auger drilling to 30 ftbgs.
SOILblack, organic, silty clay
SANDY CLAY (CL)dry, grayish brown (10YR 5/2), stiff, mediumplasticity
SANDY CLAY (CL)dry, light gray (10YR 7/2) with brownish yellowmottling, stiff
SILTY SAND (SM)moist, light gray (10YR 7/2), medium dense, finegrained, well sorted, wet at 12 ft bgs
CLAY (CH)dry, red (2.5YR 4/8) with trace gray mottling, hard,high plasticity
CLAYEY SILT (ML)wet, red (2.5YR 4/8), soft, no plasticity
SANDY CLAY (CL)dry to moist, red (2.5YR 4/8), soft to stiff, noplasticity
SOIL
CL
CL
SM
CH
ML
CL
CEMENT
GROUT
BENTONITE
FILTERPACK
SCREEN
0.5ft SUMP
5.0
5.0
4.0
5.0
5.0
5.0
0.0
5.0
10.0
15.0
20.0
25.0
LOGGER : Roger Gomez/SAN
PROJECT : North Cavalcade Superfund Site RA
DEPTH OF CASING,DRILLING
RATE, DRILLINGFLUID LOSS,
TESTS, &INSTRUMENTATION
DE
PTH
BE
LOW
GR
OU
ND
SU
RFA
CE
(ft)
USCS
COORDINATES : 13857832.7 N 3124779.3 E DRILLING METHOD AND EQUIPMENT : HSA with Geoprobe 6620, 7 1/4-in OD x 3 3/4-in ID auger
SOIL DESCRIPTION
SOIL NAME, USCS GROUP SYMBOL,
DENSITY OR CONSISTENCY, SOILSTRUCTURE, MINERALOGY
COLOR,MOISTURE CONTENT, RELATIVE
Soil Boring Log
MW52I
LOCATION : Houston, TX
DRILLING CONTRACTOR : Gainco Drilling, Driller: Margarito Estrada
PROJECT NUMBER: BORING NUMBER:
END: 11/30/2010
SHEET 1 OF 2406762
COMMENTS WELL DIAGRAM
10.05 ft BTOC (12/9/2010)
ELE
VA
TIO
Nft
AM
SL
START: 11/30/2010
5
10
15
20
25
30
45
40
35
30
25
20
GR
AP
HIC
LO
GELEVATION : 47.10 ft
REC
OVE
RY
(ft)
INTE
RV
AL
(ft)
STATIC WATER LEVEL:
003118
Boring terminated at 30 ft bgsCLAY (CH)dry, red (2.5YR 4/8) with gray mottling, hard, highplasticity
CH5.0
35.0
30.0
LOGGER : Roger Gomez/SAN
PROJECT : North Cavalcade Superfund Site RA
DEPTH OF CASING,DRILLING
RATE, DRILLINGFLUID LOSS,
TESTS, &INSTRUMENTATION
DE
PTH
BE
LOW
GR
OU
ND
SU
RFA
CE
(ft)
USCS
COORDINATES : 13857832.7 N 3124779.3 E DRILLING METHOD AND EQUIPMENT : HSA with Geoprobe 6620, 7 1/4-in OD x 3 3/4-in ID auger
SOIL DESCRIPTION
SOIL NAME, USCS GROUP SYMBOL,
DENSITY OR CONSISTENCY, SOILSTRUCTURE, MINERALOGY
COLOR,MOISTURE CONTENT, RELATIVE
Soil Boring Log
MW52I
LOCATION : Houston, TX
DRILLING CONTRACTOR : Gainco Drilling, Driller: Margarito Estrada
PROJECT NUMBER: BORING NUMBER:
END: 11/30/2010
SHEET 2 OF 2406762
COMMENTS WELL DIAGRAM
10.05 ft BTOC (12/9/2010)
ELE
VA
TIO
Nft
AM
SL
START: 11/30/2010
35
40
45
50
55
60
15
10
5
0
-5
-10
GR
AP
HIC
LO
GELEVATION : 47.10 ft
REC
OVE
RY
(ft)
INTE
RV
AL
(ft)
STATIC WATER LEVEL:
003119