quarry detection monitoring wells completion report …

IIII

DOE/OR/21548-224

CONTRACT NO. DE-AC05-86OR2.1548 ,_

OCT 2 8 !ggt

QUARRY DETECTION MONITORINGWELLS COMPLETION REPORT WP-166

Weldon Spring Site Remedial Action ProjectWeldon Spring, Missouri

SEPTEMBER 1991 REV. 0

U.S. Department of EnergyOak Ridge Operations OfficeWeldon Spring Site Remedial Action Project

DIS'[RIBLJ;I(jt.,, L.,_: i! ,:,::., ,..'..,,_',_,IEN i ii-, UNLiMIIIEID

Printed in the United States of America. Available from the National Technical

Information Service, NTIS, U.S. Department of Commerce, 5285 Port Royal Road,Springfield, Virginia 22161

NTIS Price Codes- Printed copy: A04Microfiche: A01 DOE/OR/21548--224

DE92 001946

m:\ueers2_joanne_jonee\wp166.cr

DISTRIBUTION OF TI-tI,S DOCUMENT 18 LIi_iLIMITED

,,, , ,, ,

(_ MK-FERGUSON F.vNo0A___ Issue Date:

Weldon Spring Site Remedial Action Project Page 1 of 1Contract No. DE-ACOS-860R21548

PLAN TITLE: Quarry Detection Monitoring Wells CompletionReport WP-166

APPROVALS

PMC Envir ntal Safe _7_uaL_l

Health Manager

PMC C_nstr_tion_agement andOperations Manager

PM C_i_ Assurance Managerroj_ir D__ _qD a£ePMC Dainty P actor _/_/

PMC Project Director Da£e

[DISTRIBUTION OF TFiI,S DOCUMENT IS UNLIMITED

DOE/OR/21548-224

Weldon Spring Site Remedial Action Project

Quarry Detection Monitoring Wells Completion Report WP-166

Revision 0

September 1991

Prepared by

MK-FERGUSON COMPANYand

JACOBS ENGINEERING GROUP7295 Highway 94 South

St. Charles, Missouri 63304

for the

U.S. DEPARTMENT OF ENERGY

Oak Ridge Operations OfficeUnder Contract DE-AC05-86OR21548

MASTERm:\users2_oanne_jones\wp166.cr LIMITEDDISTRtE3UTION OF THkS DOCUMENT IS UN

001801

TABLE OF CONTENTS

SECTION PAGE

1 INTRODUCTION ................................................ 1

1.1 Purpose .................................................... 11.2 Overview ................................................... 1

2 ABANDONMENT ............................................... 3

2.1 Monitoring Weil-1025 ......................................... 3

3 DRILLING ..................................................... 4

3.1 Monitoring WeU-1029 ......................................... 43.2 Monitoring Weil-1030 ......................................... 53.3 Monitoring WeU-1031 ......................................... 53.4 Monitoring WeU-1032 ......................................... 63.5 Monitoring WeU-1033 ......................................... 63.6 Monitoring Weil-1034 ......................................... 7

4 WEI2_ INSTAU_TION ........................................... 8

4.1 Monitoring WeU-1029 ......................................... 84.2 Monitoring Weil-1030 ......................................... 84.3 Monitoring Weil-1031 ......................................... 84.4 Monitoring WeU-1032 ......................................... 94.5 Monitoring Weil-1033 ......................................... 94.6 Monitoring Weil-1034 ......................................... 9

5 WELL DEVELOPMENT ......................................... 106 SITE RESTORATION ........................................... 117 DECONTAMINATION ........................................... 128 ANALYTICAL RESULTS ......................................... 13

APPENDIXES

A Completed Borehole, Well Installation, Development, And Abandonment LogForms

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LIST OF FIGURES

_YMBER PAGE

1-1 Monitoring Well Locations ....................................... 2

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1 INTRODUCTION

1.1 Purpose

The purpose of this report is to document the activities undertaken during

implementation of Work Package 166, Quarry Detection Monitoring Wells. The subcontract

specifications should be consulted for specific details regarding this work effort.

1.2 Overview

On January 2, 1991, Geotechnology, a subcontractor, began the work for Work

Package 166 (WP-166) which involved the abandonment of MW-1025, and the installation

and development of monitoring wells MW- 1029,MW- 1030, MW- 1031, MW- 1032, MW- 1033,

and MW-1034 ali of which are located r,ear the Weldon Spring quarry. Refer to Figure 1-1for monitoring well locations. This work provided additional characterization needed for the

quarry and replaced MW-1025 with MW-1034 because MW-1025 would have been impacted

by the Highway 94 relocation effort. Geotechnology personnel present during this work

included Dale Meyer, Superintendent/Senior Driller; Andy Limmer, Geologist; ScottHildabrandt, Senior Driller's Assistant; and Paul Guerrin, Driller's Assistant. The

Construction Engineer was Vernon Taylor of the Construction Management & Operations(CM&O) Department with field representation provided by Craig Jones and Richard

Spurgeon of the Environmental, Safety and Health (ES&H) Department. Data for

completed well abandonment, well installation, well development, and boring logs for ali

monitoring wells installed for WP-166 are in Weldon Spring Site Remedial Action Project

(WSSRAP) Quality Assurance (QA) and ES&H files, and are also included in appendix A

of this report.

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It STATE RouTE 94

• MW-1034 _I

/' MW-1029 I

/

/

MW-lO3

MW-1032e,=,,

MW-1031e

fFEMME OSAGE:SLOUGH

MW-1033

O'QUARRY MONITORING WELL WP-166 MONITORING WELL LOCATIONS

i

0 250 500 FT FIGURE 1

0 76.2 152.4 M _z_,,o_,_ Iuo"''N°" AIQYI06310891

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2 ABANDONMENT

2.1 Monitoring We11.1025

On January 2 and 3, 1991, monitoring well MW-1025 was abandoned according to

State and Federal Regulations and ES&H Procedure 4.4.4s. Only 25 fl of the original riser

(stainless steel) was extracted intact. However, a total depth of 56 ft was drilled, including

drilling approximately 12 fl into bedrock as indicated by the previous log for this weil. The

boring was overdril!e'_ using 10 in. augers (original hole was 8.5 in.) and then grouted to the

ground surface using Volclay grout as specified.

The primary problem encountered during the abandonment occurred when the drill

bit severed the casing at a depth of approximately 25 ft and was no longer centered on the

well casing. The driller continued with drilling operations; however, he was not able to

realign the drill bit over the well casing as fragments of stainless steel casing were present

in the cuttings. The driller continued 12 fl into the bedrock, and then grouted the hole from

a total depth of 56 ft below ground surface to the surface. Cuttings were allowed to be

spread in the surrounding area as stated in the specifications; however, the weil materials

were screened from the cuttings and were disposed of by Geotechnology in accordance with

the subcontract specifications.

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3 DRILLING

The six boreholes for well installation were drilled using a truck mounted CME 75

drilling rig with 6 1/4 in. ID hollow stem augers, NX size wireline core barrels, 2 in. OD split

spoons, and a 6 in. hammer bit. A total of 465.0 ft were drilled for the six wells using

approved drilling methods for both overburden materials and bedrock. Typically, 2 ft split

spoon samples were collected continuously from 0 ft to 10 ft and then every 5 ft thereafter

unless otherwise specified until bedrock waz encountered. When core drilling in bedrock,

the continuous wireline system was utilized using 10 ft runs. Once a total depth was

determined, the hole was reamed with the hammer bit. Specifics for each boring drilled are

provided below.

3.1 Monitoring We11.1029

The borehole used for installation of MW-1029 is located on the rim of the quarry

near the north gate. This borehole was drilled from January 14 through January 17, 1991.

For the most part, silts, clays, and silt/clay mixtures were present from the ground

surface to 29.5 ft. As specified, no environmental samples were collected for analysis. From

29.5 ft to 34.5 ft, highly weathered Kimmswick limestone was encountered followed by an

additional 65 ft of highly fractured (both vertically and horizontally) Kimmswick limestone

to a depth of 99.5 ft below the ground surface (bgs). Circulation was lost at an approximate

depth of 45 ft and was never regained. This was consistent with the fractures and vugs

identified within the core samples. At 98 ft below the ground surface, water was

encountered within the Kimmswick Limestone. The core samples of the Kimmswick

Limestone were typically hard, gray, and fossiliferous and contained solution features such

as vugs and styolites. Also, the rock quality of the Kimmswick core samples was typically

50% and less. At approximately 99.5 ft below the surface, rocks of the Decarah Group were

encountered. The Decorah Group, typically a gray limestone with shale partings, was highly

to slightly weathered with iron staining and fractures present. A 10 in. shale layer was

encountered at 108 ft bgs; however, this shale bed was the only parting present within the

11 ft of the Decorah sampled. Water was encountered at 98 ft, and the hole was terminated

at 110.5 ft. All core samples were scanned for radioactivity, and all samples were released

as clean except for the clay layer encountered at 108 ft bgs which indicated approximately

200 to 250 counts per minute (6-7 times background). All soil cuttings and soil samples were

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091891

containerized in four drums and disposed of in the contaminated stockpile located in the

inner quarry. After all material was emptied from the drums, the drums were

decontaminated and scanned prior to their release from the inner quarry.

3.2 Monitoring Well.lO30

From January 22 through January 24, 1991, a borehole was drilled for MW-1030 on

l the southwest rim within the inner quarry fence.

Mostly silts and clays were encountered to depths of 50 ft below the ground surface.

Soil samples were collected from 0 ft to 10 ft and from 30 ft to 36 ft below the ground

surface. Portions of these samples were analyzed for environmental contaminants. Sampling

parameters included the entire Hazardous Substance List, nitroaromatics, natural uranium,

Th-230, and Th-232. Bedrock encountered from 50 ft to 95 ft below the ground surface wascored using the wireline method. Kimmswick Limestone was encountered between 50 ft and

80 ft below the ground surface. Many solution features including styolites and vugs were

present as were many horizontal and vertical fractures. Rocks of the Decorah Group were

encountered 80 ft below the surface, consisting of fresh limestone with only a few shale

partings, the thickest being less than 1 ft. Groundwater was present approximately 87 ft

below the ground surface. All cuttings produced were placed in drums and disposed of

within the inner quarry, as described in Section 3.1 for MW-1029 borehole. No majordifficulties were encountered when drilling this borehole.

3.3 Monitoring Weil-lO31

The borehole for monitoring well MW-1031, located north of the Femme Osage

Slough with the existing well cluster MW-1013 and MW-1014, was drilled on January 28 and29, 1991.

Twenty feet of soil consisting of mostly silty clays with two very thin sand layers

encountered above the bedrock was sampled and analyzed for uranium, Th-230, Th-232 and

nitroaromatics. The bedrock encountered at 20 ft bgs was cored to a total depth of 56.5 ftusing the wireEne method. The Decorah Group was encountered from 20 ft to 35 ft below

the ground surface and the Plattin Limestone was encountered from 35 ft to 56.6 ft below

the ground surface. Groundwater was present at a depth of approximately 14 ft below the

ground surface; however, this borehole was drilled for monitoring groundwater within the

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Plattin. Therefore, the borehole was terminated at 56.5 ft, approximately 21 ft into the

Plattin. Groundwater located well above the Plattin was cased to prevent mixing. Cuttings

generated from the borehole were drummed and disposed of within the inner quarry in the

same manner as for MW-1029. No major difficulties were encountered during drilling

operations for this borehole.

3.4 Monitoring WeU-1032

The borehole for monitoring well MW-1932 is located north of the slough with the

existing weU cluster MW-1008 and MW-1009. This borehole was drilled on January 31, and

February 1, 1991.

Silty clay with one small sand lens was encountered to 12 ft below the ground

surface. The 12 ft of soil was sampled and analyzed for uranium, Th-230, Th-232,nitroaromatics, and the total Hazardous Substance List. The bedrock encountered from 12

ft to 30 ft known as the Decorah Group consisted of highly fractured limestone with a shale

parting. Groundwater was present at 8 ft below the ground surface; however, this borehole

was drilled to monitor the Decorah Group, therefore the borehole was terminated at 30 ft,

approximately 18 ft into the Decorah. The soils in the surrounding area are known to

contain low levels of radiological contamination, therefore, the rig was scanned prior to its

departure. No contamination on the rig was detected prior to its departure. _lso, ali

cuttings generated during drilling operations were disposed of within the inner quarry as

described for MW-1029. No major difficulties were encountered during the drilling of thisborehole.

3.5 Monitoring Well-lO33

The borehole for monitoring well MW-1033, located south of the slough with well

cluster MW-1019 and MW-1020, was drilled on February 13 and 14, 1991.

Silty clays were encountered to approximately 15 ft with fine sand present to 20 ft

below the ground surface. This 20 ft of material was sampled and analyzed for uranium, Th-

230, Th-232, and nitroaromatics. Well graded sands and gravels were encountered from 20

ft to 82.5 ft below the ground surface. This material was not sampled. Bedrock encountered

from 82.5 to 97.5 ft is known as the Plattin Limestone and consisted primarily of fresh grey

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limestone with styolites. The formation appeared very tight with few fractures noted.

Although it was very difficult to determine if groundwater was present within the Plattin, the

borehole was terminated 15 ft within the bedrock as specified in the specifications. It should

be noted that groundwater was present at a depth of 20 ft below the ground surface (within

the alluvium). Cuttings generated during this operation were spread on the surface near the

borehole location as specified.

One major difficulty was encountered during drilling this borehole. Heaving sands

began to give the driller many problems at a depth of approximately 22 ft below the ground

surface. To correct this problem, several hundred gallons of water obtained from the St.

Charles County Water Treatment Plant were pumped into the borehole to create a settling

effect. No other major problems were encountered during this operation.

3.6 Monitoring Well-lO34

The borehole used for monitoring well MW-1034 is located approximately 100 ft due

north of MW-1025 and was drilled from January. 3 to January 11, 1991.

This borehole replaced MW-1025 and took several days to drill due to inclement

weather. Silty clay with very few sand lenses was encountered to a depth of approximately

55 ft. Samples were collected from 0 ft to 5 ft and 40 ft to 45 ft below the ground surface

and analyzed for uranium, nitroaromatics, and the total Hazardous Substance List. Bedrock

encountered from 55 ft to 75 ft below the ground surface consisted of fossiliferous, grey

limestone. The Kimmswick Limestone was identified as the layer from 55 ft to

approximately 70 ft below the ground surface, while the remaining 5 ft was identified as the

Decorah Group. Groundwater was encountered at approximately 60 ft; therefore, the

borehole was terminated at 75 ft below the ground surface. Cuttings generated at this

location were spread on the surface near the borehole as specified. No major difficultieswere encountered at this location.

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4 WELL INSTAIXATION

All well casing and screen materials were made of 316L stainless steel with a locking

steel protective surface casing (4 in. square) centered over the top of the well casing. Pads

were constructed of ready mix concrete and were approximately 2.5 ft x 2.5 ft square with

posts (6 in. diameter) instaUed surrounding the wells for protection. Refer to the

specifications for the protective casing and pad diagrams.

4.1 Monitoring WeU-1029

On January 18 through 21, 1991, monitoring well MW-1029 was installed within the

Decorah Group. The screened interval for the well was between 110.5 ft and 100.5 ft below

the ground surface (bgs). The sand pack was placed to 95 ft bgs and the seal (bentonite 3/4

in. pellets) to 91.5 ft bgs. The sand pack consisted of WB-40 Meramac sand. The

remainder of the hole was backf_ed with Volclay grout using a tremie pipe. Approximately

twice the amount of volclay grout anticipated was used indicating that voids or fractures

around the well absorbed the grout.

4.2 Monitoring Well.lO30

From January 24 through 28, 1991, monitoring well MW-1030 was installed within the

Decorah Group. The screened interval for the well was between 90 ft and 8(_ft below the

ground surface. The sand pack (WB-40 Meramac sand) was placed from the bottom of the

borehole (95 ft bgs) to 72 ft bgs with a 4 ft seal of bentonite 3/4 in. pellets above the sand

pack to 68 ft below the surface. The remainder of the hole was backfilled with Volclay

grout using a tremie pipe.

4.3 Monitoring We11-1031

On January 29, 1991, monitoring well MW-1031 was installed within the Plattin

Limestone. The screened interval for the well was between 53 ft and 43 ft below the ground

surface. The sand pack (WB-40 Meramac sand) was placed from the bottom of the

borehole (56.5 ft bgs) to 39.5 ft bgs with a 3.5 ft seal (bentonite 3/4 in. pellets) above the

sand pack. The remainder of the hole was backfilled with Volclay grout using a tremie pipe.

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4.4 Monitoring We11-1032

On February 1, 1991, monitoring well MW-1032 was installed within the Decorah

Group. The screened interval for the well was between 29 ft and 19 ft below ground

surface. The sand pack (WB-40 Meramac sand) was placed from the bottom of the

borehole (30 ft bgs) to 17 ft bgs with a 3 ft seal (bentonite 3/4 in. pellets) above the sand

pack. The remainder of the hole was backfilled with Volclay grout using a tremie pipe.

4.5 Monitoring Weil-lO33

On February 20, 1991, monitoring well MW-1033 was installed within the PlattinLimestone. The screened interval for the well was between 97.5 ft aad 87.5 ft below the

ground surface. The sand pack (WB-40) was placed from the bottom af the borehole (97.5

ft bgs) to 85 ft bgs with a 4 ft seal (bentonite 3/4 in. pellets) above the sand pack. The

remainder of the hole was backfilled with Volclay grout using a tremic pipe.

4.6 Monitoring We!1-1034

On January 10, 1991, monitoring well MW-1034 was installed across the Kimmswick-Decorah contact. The screened interval for the well was between 74 ft and 64 ft below

ground surface. The sand pack (WB-40) was placed from the bottom of the borehole (75

ft bgs) to 58 ft bgs with a 3 ft seal (bentonite 3/4 in. pellets) above the sand pack. The

remainder of the hole was backfilled with Volclay grout using a tremie pipe.

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$ WELL DEVELOPMENT

Well development was performed on each of the wells drilled. Development did not

commence until a minimum of 48 hrs after well installation to ensure that the grout column

and concrete pad were completely set up. All wells were bailed dry 10 times because the

volume of water required for removal could not be removed due to the slow recharge of the

bedrock formations. However, the wells were developed until the following conditions were

met as set forth in the specifications: (1) three conductivity measurements within plus or

minus 20%; (2) three pH measurements within plus or minus 0.2 standard units; and (3)

three temperature measurements within +_ 1°C.

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6 SITE RESTORATION

Site restoration was performed only at monitoring well locations MW-1031, MW-1032,

and MW-1034. MW-1029 and MW-1030 are located within the inner quarry on the rim and

MW-1033 is located adjacent to crops and did not require seeding. Monitoring well

locations MW-1031, MW-1032 and MW-1034 were graded to conform to natural ground

elevations and seeded with a winter seed mix in sufficient quantity to ensure dense growth.

Ali locations were cleaned to remove trash and debris and restored as per specifications.

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7 DECONTAMINATION

All coring, sampling, augering, and drilling equipment and all tools were

decontaminated by hot water cleaning between each borehole/monitoring well location. This

operation was performed within the lower inner quarry to contain all fluids generated, with

the exception of decontamination after installation of MW-1034. Decontamination at the

site of MW-1034 was allowed as this well was a replacement for MW-1025.

Dccontamination operations for this work package were performed in accordance with the

specifications.

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8 ANALYTICAL RESULTS

Analytical parameters for soil samples collected for aU boreholes except MW-1029

were analyzed for uranium, thorium, cyanide, nitroaromatics, and all Hazardous Substance

List parameters including volatiles, semivolatiles, pesticides, polychlorinated biphenyls (PCBs)

and metals. No soil samples were collected at MW-1029 as per specifications.

Uranium results for all boreholes sampled were at background levels with the

exception of MW-1031 and MW-1032. Uranium results for MW-1031 were only slightly

above background; results for MW-1032 were as high as 67 pCi/g. Thorium results for all

boreholes sampled were at or near background levels.

Nitroaromatics and cyanide were not detected in any of the samples collected.

Volatile and semivolatile organics were not detected in the soil samples collected from the

boreholes, with the exception of common lab contaminants such as methylene chloride,

toluene, acetone, and pthalates.

All metals results were either within their natural background ranges or below the

detection limit of the instrument. PCB's were not detected within any of the boreholes.

Pesticides detected (aldrin and methoxychlor) within MW-1034 near the surface may be

attributed to previous spraying of pesticides on the Highway 94 right-of-way.

In conclusion, the analytical results show that only uranium was detected in significant

quantities; ali other results were below the detection limit, very near the detection limit, or

within natural background ranges.

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APPENDIX A

Completed BGrehole, Well Installation,

Development and Abandonment Log Forms

EXHIBIT 4.4.4.1

- MK-FERGUSON LEPLU" ..,o.,..o.,..u=,..=.,.,..., WE GGING AND ABANDONMENT LOG FORM

.--_.pATEOF ABANDONMENT O1 02 1 0

-" ORIGINAL WELL DA TA: ._

WELLLOCATION DESIGNATION 1_-1025

SURVEY COORDINATES OF WELL , ,

SCREENED OR OPEN HOLE? screened

TOTAL DEPTH OF BOREHOLE ,,,80.2 '

TOTAL DEPTH OF WELL 80.2 v22.2' z

LENGTH OF FILTER PACK • "

I_EFTH TO BED ROCK (IF APPROPRIATE) 44 . 3 ' ,,=,=,=== _=:_z

BOREHOLE DIAMETER 8.5 ' I=

WELL PIPE DIAMETER 2.0" =. ......... p-m

LENGTH OF GROUT COLUMN ,58"0' (inclds3' s =.al)(/1

TOP OF FILTER PACK ELEVATION 58.0' b_l ,..-.-.._ z

COMMENTS using I0" OD HS augers _<P>uJ

>-

.J

_..___ _z• DRILLING AND PLUGGNG INFORMATION z

•WELL CASING EXTRACTED: ' NO _" =n1,,_j P'_ o ,,,O ¢0

EXTRACTION METHOD" PULLED 25 ' of8C ' Lu -------t_ uJn

DEPTH DRILLED 56' FEET uJ _

COMPLETE REMOVAL ACHIEVED YES "----- -,_- Ok- n-

IF PARTIAL EXTRACTION, EXPLAIN: Drilled to 35' bgl, _ oO o_

noticed SS in cuttin_s_ Dulled 25' of SS casin_ -- ..____ z _, O a:

cut through casin_., tried to center SS casin_, but ocouldn't as casing was outside of augers--terminated * .j <

GROUT TYPE USED (MIX) -'---- _< _'oU.

Volclay W/initiator o

VOLUME USED (DESCRIBE ZONES OF LESS) _--'_

250 _allons (9)-50 lb. ba_s volclay grout, initiator... ------ =° ,T'J

SKETCH GROUTING PROFILE: used =_ .8tu uJa

!tl a.

PROBLEMS (BIT DEVIATION, ETC.) _=

•drillin_ @ 56; 12 _to bedrock uJ O.... Q z

_ uj Z

SUBCONTRACTOR NAME: Geotechnology <m <-m _,,J UJ

I-CE SIGNATURE:DATE: 1/3/9

I .............. i ...... |

ii ii iiii i iii

WELDON SPRING SITE REMEDIAL ACTION PROJECT

WELL COMPLETION RECORD

WELL NUMBER HW-1029 DATE INSTALLED 18 Jan 91

PMC REPRESENTATIVE Crai_ S. Jones DRILLER Dale MeyerIII II III

i,i

TOP OFPROTECTIVE CASING 2.5'

TOP OF CASING 2.0' _ LOCKED-DATE 01-23-91

SURFACE SEAL TYPE ready mix

GROUND _ _ THICKNESS 3'SURFACE --- "-

TOP OF I t----- BOREHOLE DIAMETER 6"GROUT 1.0' I:; CASING TYPE stainless steelii;, I DIAMETERPROTECTIVE CASING 2,5 / I i I

I° i

iL =-------- OUTER CASING TYPE n/a

.BOTTOM OF DIAMETER n/aOUTER CASING n/a

TOP OF SEAL 91.3' GROUT TYPE volclay. & initiator

TOP OF --FILTER PACK 95' _ _ SEAL TYPE Bentonite 3/4" pellet:r///_

TOP 100.5'OF SCREEN >

= t SCREEN TYPE stainless steel

CENTRALIZER DIAMETER 2"DEPTHS 109.5' & 100.5' ----- SLOT SIZE 0.010

BOTTOM ._=------- FILTER PACK TYPE WB-40OF SCREEN 110.5' >

111.0'TOTAL DEPTH

Grout @ 41' Fri 18 Jan 91, Grout down @ 60' Mon 21 Jan 91COMMENTS

PMC REPRESENTATIVE SIgNAl UHf-. _-,"\__'---"" DATE ,ox-_ II I I I I III II I I I I illl ii •

.................................. ,,.....

WELDON SPRING SITE REMEDIAL ACTION PROJECTBOREHOLE LOG

PAGE. ,1 OF- 4

GROUNDWATER LEVELS

lTE lD: QY _ LOCATION lD:. MW-1029 DATE" TIMF_ ..... DEPTH"(FT.)-lTE COORDINATES (FT.): ............

E .... 01-15.,91 .1630 98.0' bgl

ROUND ELEVATION (FT. MSL): _ " ...........HSA 6 I14" ld, NR 2" id

,RILLING METHOD: - 'Geotechnology, Inc. LOCATION DESCRIPTION Near quarr_ fence

,RILLING CONTR.:

JATE STARTED: - 14 Jan 91 and monitoring devices

JATE COMPLETED: 17 Jan 91 SITE CONDITION Snow and ice on ground

IELD GEOLOGIST/ENGINEER: A. Limmer _ 40 °F

VISUALCLASSIFICATIONDEPTH --_=._ _ (oPT.) PEn6_. >

0-2 5" _ 0-0-i-I 4" ice I" brown silty clay - CL

2-4 18" _ 1-3-5-5 Stiff broWn silty clay - CL

4-6 24" _ 2-2-3-4 M. stiff brown silty clay - CL" 5 -

-- . 6-8 24" _ 2-2-2-3 Brown silty clay - CL

1-2-2-2 Soft brown silty clay - CL8-10 24"

- I0

-- 14.5- 24" ..... 2-2-3-4 iM. stiff brown silty clay - CL- 15

16.5

19-5 24" _ 2-2-3-5 Brown silty clay - CL- 20

21-5

9-15-8-5 4" reddish brown clay, some silt to24.5- 6"chert and limestone gravel and fragment

_- 25 26.5 _

_ Highly weathered limestone, sand,gravel,

30 31.5 _ 12'_ _ 5_6-18-23 L.._ trace cia

UUM_=r_---_--"_'''"L'*rm:No sam)les taken at MW-1029 as per.specs!

°

iii ii ii l i i | r •| |


PAGE _Z___ OF _4,__

QY LOCATION lD:.MW-1029 ' GROUNDWATERLEVELS ' _'1,

lTE lD: _ - ..... -' DATE' ' TIMIE....... DEPTH"('FT.)-_E COORDINATES (FT.): 01-15-91 1630 98 0' b'$i ' -E _ ,, ,, •

ROUND ELEVATION (FT. MSL): ..... .......RiLLINGMETHOD: HSA6 1/4";NQ 2"£d .... _RLLING CONTR.: Geocechnolu?-_Svc !nc LOCATION DESCRIPTION Near fence and

ATE STARTED. 14 Jan 91 small electrical conduit

ATE COMPLETED: 17 Jan 9! SITE CONDITION Snow and ice on ground

IELD GEOLO GIST/ENGIIu_ER: A. Limmer 40°F

|1 -' 1

i

,.J=. _ o. CPM BLOWS z :D VISUAL CLASSIFICATION

DEPTH _ uJp.. _ (OPT.) PER 6 IN. '<:>_ o_=: ..... ,..........

_ Highly weEthered ims; sand, gravel, cia:

34.5- 6" 26-32-50/3 Limestone hQrd, white, few rugs, slightly

35 -- 35.2 to moderately weathered, fossiliferous(siliceous) some chert dark gray and

__ " - brown. Good H_0 return. Slightly

100% _ stylolitic, aphenitic

• 40 -

-

44.3 - Limestone h4rd, gray, aphenitic," stylolJ ic

- _slightly weathered, some calcit• 45 -- present @ 46.5' Few fossils, _renQrceeus

" No H20 return100% ._

48.8 Limestone herd, gray aphenitic, stylolit

49.5 100% Fresh to slightly weathered,

" 50 - - No I]20 return

- 55 - Limestone hard, gray, stylolitic,

_ _ IC0% - f-__rous, slightly weatheredL

_

59.4 ,, No H 0 r_tur_ .....J

_,OMMENTS: Auger refuse_ @ 35, beKan isr run @ 5.2

2

i i i i i , mii i


PAGE. 3 OF 4i ,

;lTE lD: _ qY LOCATION lD: _ MW-1029 GROUNDWATER LEVELS;lTE COORDINATES (FT.): DATE TIME DE'PTH (FT.), E ',i i630 980'IROUND ELEVATICN (FT. MSL): •pRH.LIqGMETHOD: HSA 6}"id; Nq 2" id _ ..... _ ......

pRLL_G CONTR.: GeotechnoloRy, Inc. LOCATION DESCRIPTION , Near quarry fence

lATE STARTED: 14 Jan 91 and air monitors

)ATE COMPLETED: 17 Jan 91 SErE CONDrTION Snow and ice on _round_

_IELD GEOLOGIST/ENGINEER: A. Limmer cloudy, 40°F

, ,,

.J"J o CPM BLOWS :_a. =: =- z .J VISUALCLASSIFICATION< p.. (O PT.) PER 6 IN. >'<¢0_ ¢0 n" ........

59.4 Limestone h_rd, gray, slightly to ....moderately weathered, stylolitic, few

-- - pits and v_gs with calcite crystals,

No H20 return Small void @ 69'

9.5'65 ....

•95%

1-- L,- 69.4

70 -

,,

.... Limestone hQrd, gray, moderatelyJ

- 75 _ 9.2' weathered, stylolitic, vertical fractur_with weathering. Some voids, many chert

n=_o inclusions below 66', aphenitic

- No H20 return

79.4- 80

, ,

7.3' Limestone hQrd, gray, aphenitic,

stylolitic, fresh to slightly weathered

-- 73% voids from 79.4-82'. Some chert,

- fossiliferous, no H20 return-85

,,

-- I90 ,89.4 .............._ ,,,

COMMENTS:

-- i_,_ ilii ii L i _ i iii i i

i


PAGE 4 OF 4

rE lD'_ (_Y _ LOCAT,_)N 1_. _q-]0;q 'i ' GROONDWATER LEVELS

CECOORD_ATES (FT.): ,,, BATE III Ti_IE' DEPTH'(F3:.) -E 0 I -- i 5--911"' ' 1630i 98 0' bgL

_OUND ELEVATION (FT. MSL): _ i .......HSA 6}"icl; Nq 2"ld ...... _.

;ILLING METHOD:

;g_LtNG CONTR.: Geotechnolo_v, I nc, -- LOCATION DESCRIPTION Inside quarryI_4Jan 91 gate near monitoring devices_TE STARTED:

_TE COMPLETED: 17 Jan 91 SITE CONDITION.Snow on ground_ r_inin_;, :

GEOLOGIST/ENGINEER: A. Limmer 35°F_LD

-J CPM BLOWS :D_ _ Z .J VISUAL CLASS_F3CATK)N

EPTH <_ _-w <_ _ (OPT.) PER 6 _4. ><coZ- (n °" ....................

89.4 _ Limestone h_rd, gray, aphenitic, freshto moderately weathered below 97'.

.... '" :- Stylolitic., some chert inclusions,

., - highly fossiliferous. No H20 return100%

95 -

- !99.4 .--

lO099.4

- " Limestone h_rd, gray, aphenitic, highly

I to slightly weathered,argillaceous below_ _ 106'. Shale layer i0" thick @ 108"

(top of decorah) No H20 return xx105 '_ --

_

-

109.4 -- Limestone hard, gray, fresh, aphenitic,ii0 -- highly fossiliferous, ergillaceous

. !00% - No H20 return112 --

f -, ,,, _

115 -

120 I"' , ......

Boring terminated @ I12.0', Schrammed to 117._'. Hole slumT_edOMM-"_S:=N,and re-shcrammed to i17.5' . Next morning 18 Jan Friday hole open to iiI.5' .

I


WELL DEVELOPMENT FORM

PAGE i OF 2

WELL NUMBER MW-lO29 DATE 06 Feb 91

FIELO PERSONNEL . Scott Hilderbrand/Paul G_errein/A. Limmer

ST_,TIC WATER LEVEL 92' bgl 02-06-91 TOTAL DEPTH 110' .,

WELL VOLUME (CASING AND FILTER PACK)

DEVELOPMENT METHOD(S) 2" stainless steel bailer by hand

BEGINNING TIME 1445

INITIA°L WATER CONDITIONS cloudy

RECHARGE RATE very, very slow

END TIME 1540

TOTAL VOLUME REMOVED 48 GALS.

TOTAL WELL VOLUMES REMOVED n/a GALS.

FINAL TURBSDITY MEASUREMENT n/a NTU

FINAL WATER LEVEL ...... FINAL DEPTH

COMMENTS -see attached (bailed well dry I0 times)

-water _,learduring development and @ end of development

Subject MW-1029 Page 2 of 2

1) 06 Feb 91water level @ 92'

7.52 pH, 10°C, 700 umohs

dry after 8 gal removed

2) 07 Feb 91water level @ 100.5'

6.95 pH, 10°C, 730 u_ohs


3) 08 Feb 91water level @ I01'

6.80 _H, 9°C, 870 uHohs

dry after 2.5 gal removed

4) 11 Feb 91• .

water level @ 94'

7.35 pH, 10°C, 950 uHohs



7.30 pH, 10°C, 990 umohs

dry after 3 gal removedo

6) 14 _'eb 91water level @ 95'

".30 pH, 9°C, 1060 umohs

• dry after 4.5 gal removed


6.94 pH, 16°C, 810 umohs


8) 26 Feb 91wter level @ 93.5'

7.35 pH, 9°C, I000 umohs


9) 28 Feb 91water level @ I00'

7.79 pH, 10°C, 870 umohs


I0) 01 Mar 91water level @ 105'

7.90 pH, 10°C, 870 umohs


II0' well

iii ii I I I I III



WELL NUMBER HW-1030 DATE INSTALLED_ _z, .T_,_q]

PMC REPRESENTATIVE Craig S. Jones DRILLER Dale Meyer

I l . m _ n ii i liI II


TOP OF CASING 2-5' _ LOCKED-DATE 01-31-91

, _SURFACE SEAL TYPE ready mix

GROUND .... _"_ THICKNESS 3'+SURFACE _ J_TOP OF ,4t t l-,_---- BOREHOLE DIAMETER 10"GROUT 5' / II:ii CASING TYPE stainless steel

I II 2"BOTTOM OF I II DIAMETERPROTECTIVE CASING 2.0' I II

I III III I

_m-- OUTER CASING TYPE ----ZL/'__

BOTTOM OF I I" I I DIAMETER" n/aOUTER CASING n/a .___._ I

TOP OF SEAL 68' -_=. GROUT TYPE Volclay.

TOP OF 'X_

FILTER PACK 72' __ ,,,_ SEAL TYPE 1/2 pellets

TOPOF SCREEN 8O'

) :I SCREEN TYPE stainless steel

CENTRALIZER / - I DIAMETER 2"

DEPTHS 88' & 79' SLOT SIZE 0.010

BOTTOM _ -" .. FILTER PACK TYPE WB-40OF SCREEN 90' ------ >)

ITOTAL DEPTH 95' I _

I' plug 90-91'COMMENTS

4' sand below plug

PMC REPRESENTATIVE SIGNATURE _ -_"',,_"_'_._'-'_ ,,, DATE ¢)_"0_"°_

I • I mll ii I m

...................................., ,,, 1. , , ,_-

t

i ii -- i ii J | |, i! i aa ii|i


PAGE, 1 OF - 4

| J i

lTE lD: QY LOCATION _ HW-1030 GROUNDWATER LE_/ELS- -- -- DATE ' TIME DEPTH ('FT.) -

ErE COORDINATES (FT.): 01'28-_)'1 ' 0930 87 0 bgl "E __ , ,, , ,I,

ROUND ELEVATION (FT. MSL): - . .....

RILLING METHOD: HSA 6}"ld; NX 2"ld

,RLLING CONTR" Geotechnology, Inc. LO._,,_ N DESCRIPTION Quarry @ SE corner

IATE ST.ARTED: 22 Jan 91 of fen_.e, wooded

PATE COMPLETED: 24 Jan 91 - SITE COF'DITION ....icy, slight slope 30°F

IELD GEOLOGIST/ENGINEER: A. Li=mer

,=

=' BLOWS ==L a. z .J VISUALCLASSIFICATIONDEPTH _ uJ =E_ (OPT._ PER 6 IN. <

< P > 2" top soil_;= _,-,- . ,.......| i i

0-2 g" 3-2-2-3 M. stiff brown silty clay- CL

2-4 18" 2-4-6-6 Stiff browh silty clay - CL-,,,

- 4-6 24" 3-4-4-6 Stiff brown silty clay - CL- 5 _- 3001

- 6-8 24" 2-3-3-3 M. stiff brown silty clay - CL

-- 8-10 26" 1-3-4-5 Stiff brown silty clay - CL

- I0

14-16 24'I 2-4-5-7 Stiff brown silt with v. fine sand - ML- 15

__-19-21 24" 3-6-8-9 V. stiff brown silt with v. fine sand- 20 -- and some clay below 19' - ML

,

-- 24-26 24" _ 2-7-10-11 v. stiff brown, v. silty clay, trace

_. 25 _ organics, tr. sand- CL- ML

,,

- 30 30-32 24" , 3-4-6-6 stiff reddish brown silty clay - CL ,

COMMENTS: Natural Uranium/Thorium samples were topped off with cuttings.Not enough soil in split spoons.

lI

, ......... I

i ii ii •| mnt i


PAGE 2 OF 4._

" GROUNDWATER LEVEL'S ' -,'E lD" _--.0 Y- _ LOCATK)N tiD: MW-1030 DATE .... TIME DEPTH'iFT.) -E COORD3NATES (FT.) ...... , --

E 01-28-91 0930 87.0' bgl ......

OUND ELEVATION (FT. MSL): .........ii_LING METHOD: HSA 6}"id; NX 2"ld .... _ ..

Geotechnology, Inc. LOCATION DESCRIPTION wooded, quarry_LING CONTR"TE STARTED: 22 Jan 91 _ @.SE corner of fence

TE COMPLETED: 24 Jan 91 S_E CONDITION icyt slight slope, 30°F

-LD GEOLOGIST/ENGINEER: A. Limmer ....

..... " I "'_ _ CPM I BLOWS =n. " z ..J VISUALCLASSP,CATIONEPTH =_ uJ _ _ (OPT.) i PER 6 IN. <

CO°" _ ...... -- .......

30-32 24" 3-4-6-6 stiff reddish brown silty clay CL

32-34 24"" 3002 3-3-6-12 Iv. stiff r_ddish brown silty clay to 33.-- breddish brown clay and gravel - CL to CH

, ,_

34-36 12" 3-4-9-9 v. stiff reddish b'rown clay with silt35 -- and chert gravel and fragments - CH

I , =i

I

_

'40 -- 140-42 124" 4-8-10-13 v. stiff reddish brown clay with chert

i " gravel and fragments - CH,, •

L I-- - 42-44 I _ 9-18-13-7 v. stiff reddish brown clay with

- - limestone gravel - CH, .

45 -_

,,=

50 - Limestone hard, _.hite, finely crystallir ,

51 sty-_olitic, few fossils, siliceous,

_ _- slightly weathered to moderatelyweathered with small voids @ 58' to 60.3

void @ 58.8' to 60.3' some brown clay

-- 7.8' I _ in shoe of sample barrel, possible55

claysemm.O_ ¢_ I', _)J/o

, ,

6_- 60.3 i i . .....

OMMENTS: Auger refusal @ _0'. Run 1 started @ 51'1". Void @ 58.8'-60.3;

/ ,, ,,

WELDON SPRING SiTE REMEDIAL ACTION. PROJECTBOREHOLE LOG PAGE. 3 OF_4 .

rE _D" QY LOCAT, N _D: MW-1030 GROUNDWATER LEVEI.S-- _ DATE ........ TiME 1 DEPTH (FT.)_ ,,,, _ , i _ , i ,.

[E COORD_qATES (FT.): 01-28-91 "0930 87.0 bglE __ • .,. , ,, .,

_OUND ELEVATION (FT. MSt): -- - _HSA 6 'ld" NX 2""

}!LLfqG METHOD: HSA 6 'ld- NX 2"" ...

tILLING CONTR" Geotechnolo IB____n___ LOCATION DESCRIPTION wooded, in quarry22 Jan 91 @.SE cmrner of fence

_,TE STARTED: °_TE COMPLETED: 24 Jan 91 SFFE CONDF[ION ..... icy, slight slope 36 F

ELD GEOLOGIST/ENGINEER: -

='g cPM Lows =_. tr 0- ..J VISUALCLASSIFICATION)EPTH _ uJ _ o (OPT.) PER 6 IN. <

,< I--" ,_lJJ >O3Z O91Z:

60.3 - clay seam, brown stiff sandy with rock

---------- _ fragments from 59.0' to 60.6'_ -- __ ,..;._..- ..-,.; f:.- ".

-- t

11.3 clay to 61'

-- i00% ,,--65 _ '

-------- --------" I Limestone hard,, white* -- - aphenitic, stylolitic, moderately

-- weathered to highly weathered with_

70.3 _ voids and rugs - siliceous

-70 I

19' Limestone hard, white, aphenitic,moderately weathered with small vugs and

100% voids Calcite crystals in vugs @ 75.6'.-75

Becoming argillaceous below 77'.Fossiliferous below 77.5'. Small dark

argillaceous _and @ 78' with stylolite

79 3 I conflict. 2" gray clay @ 79.1'. 79.3' to• 79.5' shale gray, fissile, soft, fresh,

79.5'-79.6' very argillaceous limestone

-80 80.8 dark gray, moderately hard, 79.6'-79.8'

shaley limestone, soft, dark gray, some

46% fissility, 79.8'-80' argillaceous lime-

stone embedded with fissile shale, shale

46% limestone and clay ending @ 80.6'-80.8'--85 _ white limestone discolored brown.

85.5 Shale @ 80.8'-80.9' brown, fresh,

Limestone white, hard, fossiliferous,

I ;h to slightly weathered small brown

-- -- 100% I zlay

-- i

90 i" Recovered clay from end of first run in second run barrel.

cOMMENTS:

°


PAGE_ 4 OF

rrE lD: QY LOCATION lD: Hw-1030 _ GROUNDWATEI_" LE_/ELS_- .... DATE TIME .... DEPTH (FT.)lTE COORDINATES (FT.): .........

E .... 01-25-91 0930 87.0 bgl

ROUND ELEVATION (FT. MSL): - ,........ ,

RILLING METHOD: HSA 6}'±d i NX 2"±d .... I

RILLING CONTR.: Geotechnolo_v, Inc. LOCATION DESCRIPTION wooded, SE corner22 Jan 91 of fence

ATE STARTED: 24 Jan 91 ,, SITE CONDITION snow on ground, slSghtATE COMPLETED:

IELD GEOLOGIST/ENGINEER: - A. L_ slope, 40°F

'-" s .owsa. " VISUALCLASSIF_ATION

DEPTH _ _ _ _ (OPT.) PER 6 _. _I

-----'-"_ Limestone hard, white and dark gray90.8 . b_nding to white and brown b_.aqding;

_ ] - fresh, highly fossiliferous, argillaceou______________.-------- medium crystalline.i

-- : !

q

,I

.._.___..._._ ' _

_D

Schrammed to 95' set well @ 90 .COMMENTS:

/



PAGE i OF 2

WELL NUMBER. MW-1030 DATE 07 Feb 91

FIELD PERSONNEL, Scott Hilderbrand/Paul Guerrein/A. Limmer/Dale Meyer

STATIC WATER LEVEL- 85' bgl 02-07-91 . TOTAL DEPTH 90'

WELL VOLUME (CASING AND FILTER PACK) ....

DEVELOPMENT METHOD(S) _ bailer

• ,,

BEGINNING TIME 1020

INITIA'L WATER CONDITIONS cloudy


END TIME n/a

TOT_' VOLUME REMOVED 8.25 GALS.


FINAL TURBIDITY MEASUREMENT _ n/a NTU

FINAL WATER LEVEL .... FINAL DEPTH ....

COMMENTS -see attachment (b_$1_ we!_ ,dry 10 times) ,

-water cl¢_r @ end of development

PMC REPRESENTATIVE SIGNATURE .... ___ DATE t_-_-__! .....


I) 07 Feb 91water level @ 85'

7.50 pH, 9°C, 1280 umohs



6.91 pH, 9°C, 1480 umohs


3) II Feb 91water level @ 88.5'

7.05 pH, 10°C, 1340umohs

dry after 3/4 gal removed


6.97 pH, 9°C, 1490 umohs


5) 14 Feb 91water level @ 88.5'o

6.78 pH, 9°C, 1480 umohs



6.62 pH, 15°C, 1118 umohs



7.10 pH, 12°C, 1240 umohs

dry after i gal removed


7.65 pH, II°C, Iii0 umohs

dry after i gal removed


7.85 pH, 12°C, 1070 umohs


I0) 01 Mar 91water level @ 88.5'

7.80 pH, 12°C, ii00 umohs

dry after I/2 gal removed

90' well

iiii II li i I -- I I I



WELL NUMBER E_/-I031 DATE INSTALLED 29 Jan 91

PMC REPRESENTATIVE- CralR S. Jones DRILLER Dale MeyerI I III I IIII III


TOP OF CASING +2.0' ,. _ LOCKED-DATE 02-01-91

SURFACE SEAL TYPE pre mix

GROUND __ THICKNESS 1'SURFACE ....

TOP OF t ,i----- BOREHOLE DIAMETER i0"

GROUT 0'I CASING TYPE stainless steel

illBOTTOM OF I DIAMETER 2"PROTECTIVE CASING 2.5' I

. It tlt tlI ii_ OUTER CASING TYPE n/ai 17"

"BOTTOM OF n/a I I DIAMETER n/aOUTER CASING I

TOP OF SEAL 35' -.,:. GROUT TYPE Volclay

FILTER PACK 39 5'• _ SEAL TYPE 1/2" Bentonite

TOPOF SCREEN 43'

>1=I - SCREEN TYPE stainless steel

CENTRALIZER _ DIAMETER 2"DEPTHS 52' & 42' SLOT SIZE 0.010

BOTTOM ----- -=------ FILTER PACK TYPE _TB-40OF SCREEN 53' _ >1

TOTAL DEPTH 56.5' ---'-" i

COMMENTS

PM C REPRESENTATIVE SIGNATURE C"__,_ .,_U..._._.._ ..... DATE ,_-c_-cL_ iI II II I I II I I I I I I I

, °

• i ii


PAGE .._.L_1 OFb

ilTE lD: SLOUGH LOCATION liD:.MW-1031 ...... GR._O_UNDWATERLEVELS --;i'rE COORDINATES(FT.): : DATE.... TIME : DEPTH.(FT.)j E 01-28,91 .... 1.1.30 14..0'

|ROUND ELEVATION (FT. MSL): , .)RILLING METHOD: HSA 6}': NX 2"td ,,- _ I ,.

)RE.LINGCONTR.: Geotechnolo_y, Inc. LOCATION DESCRIPTION-wooded)ATE STARTED: 28 Jan 91

_}ATE COMPLETED: _ 29 Jan _)1 .. SITE CONDITION muddyp sun :f, .25°F:IELD GEOLOGIST/ENGINEER: A. Lt_nm.r ....

--roll|

o. n- ¢L CPM BLOWS Z D-J VISUALCLASSIFICATION

DEPTH _ uJI- _ _ (OPT.) PER 6 IN. <>o_ ¢o_" ii

i ii

3101 0-2 18" _ 3-2-12 brown silty clay "

13102 2'-4 24" __ I-2-I-I brown sil_y sand - SM ,

"" i

3!03 4-6 24" 0-2-2-i brown silty clay with organics - CL5 - _ _

,, brown silty clay with organics some i3104 " 6-8 24 __ 0-0-i-2 sand - CL I

13105 _______________.8-1024" 1-1-1-2 brown silty clay to 9.5' gray clay w/saI(I,

-- I0 - i0-12 24" _ 0-2-3-1 gray clay - CH II

3106 12-14 24" _ 0-i-i-i gray clay - CH " II

3107 14-16 24" _ 0-2-3-5 gray clay with silt to 15.8', gray silt i

-- 15 - _ and sand I3108 16-18 i0" _ 4-6-19-50 gray silty clay to 17', limestone I

., gravel and fragments I

3109 18-20 13" _ 30-20-50/2 sand and gravel to 18.5',limestone grav1_l

I-- 20 20.8 ___-_-

Limestone herd, white, microcrystailine_- _all shale layer @ 26 '-- Decorah

.,

100% ..25 -

,,

....

,,

29.8 .

COMMENTS:, Water @ 14' AR @ PO.5'

2

., . .

,

WELDOH SPRING SITE REMEDIAL ACTION PROJECTBOREHOLE LOG

PAGE 2 _ OF 2

• • i R __ i ... ,, ,,,G OUNDWATER LEVELS " _L

CE lD: SLOUGH LOCATK_N E_: _ bATE ' TIM'E DEPTH (FT.)-- i |1, m ill , _ , , ,, -

"E cOORDCqATES (FT.)" 01-28-91 1130 14.0'E __ ,, ,

;OUND ELEVATION (FT. MSL): _ " - ' " 4;ILL_G METHOD: HSA 6_"; NX 2"id

-- i

GeotechnoIo_y, Inc. - LOCATION DESCRIPTION wooded,H_L_qG CONTR"_TE STARTED: 28 Jan 91

•,TE COMPLETED: 29 Jan 91 SrTE COND_ION _ cleared by dozer-

=LD GEOLOGIST/ENGINEER: LA" Li._er sunny

LU _ uJ-_ _ ! cPM BLOWS"_. m z J VISUALCLASSiFiCATION:_ uJ :_ _ I (OPT.) PER 6 kN. <

I'- _LU • .... ;>1

.. _

30 29.8 I -- Limestone herd, white and gray, fresh,-------- argillaceous large hornblende, and

- calcite inclusion @ 31.5 microcr' e_

..

_5 ----- I 100% _ plattin @ 35'

|

39.8

'_0 --_39.8 ,, _ __Limestone hQrd, white, gray banding,

• - fresh, slightly stylolitic, .

_ microcrystalline, argillaceous, ,

100z45 ....

49.850 -

_ •

- ' Limestone hard; '.white and gray, fresh,

__ I_= stylolitic, microcrystalline,-----'----- argillaceous "--

-- 59.8 --55 ......

_ --" [

"-_- .--- Weil set @ 43 t_--_3'.OMM_N _



PAGE 1 OF 2

WELL NUMBER MW-lO31 DATE 07 Feb 91

FIELD PERSONNEL. D_%e Mever/Pau! Guerrein/Scott Hilderbrand/A. Limmer

STATIC WATER LEVEL 10' bR1 02-07-9,1 , TOTAL DEPTH, 53'


DEVELOPMENT METHOD(S) , 2" pvc bailer by hand

BEGINNING TIME

INITIAl_ WATER CONDITIONS cloudy


END TIME



n/a NTUFINAL TURBIDITY MEASUREMENT ......

FINAL WATER LEVEL FINAL DEPTH

COMMENTS -see attached (well bailed dry I0 times)

-water clear @ end of development

PMC REPRESENTATIVE SIGNATURE _J__)_---JP DATE (3_-0_-_,_.... ¢_j_ _"


i) 07 Feb 91water level @ I0'

6.88 pH, 10°C, 1070 umohs



no tests


3) II Feb 91water level @ 46'

7.25 pH, 10°C, 950 umohs



7.07 pH, 10°C, 880 umohs



7.11 pH, 9°C, 990 umohs


6) 22" Feb 91water level @ 30'

• 7.35 pH, 9°C, 880 umohs


7) 26 Feb 91wter level @ 37'

7.70 pH, II°C, 740 umohs



7.43 pH, 10°C, 720 umohs



8.05 pH, 10°C, 650 umohs


I0) 01 Mar 91water level @ 49.5'

7.83 pH, 10°C, 680 umoh _.


53' well

i II II| i i I I I aI



WELL HUMBER H'W-1032 DATE INSTALLED O1 Feb 91

;.:MC REPRESENTATIVE Craig S. Jones DRILLER Dale MeyerI i i I .

III II •


TOP OF CASING 1.0' LOCKED-DATE 02-01-91

SURFACE SEAL TYPE pre mix

GROUND __ 1'

SURFACE .... - _ THICKNESS=,,..-

TOP OF _ _ BOREHOLE DIAMETER 10"GROUT 1' "1 CASING TYPE stainless

BOTTOM OF I i ,,PROTECTIVE CASING 3.0' I DIAMETER 2-- I

. I II II IJ L. OUTER CASING TYPE n/a

BOTTOM OF I I n/a• I I DIAMETEROUTER CASING n/a _ _ I

TOP OF SEAL 14.0' = GROUT TYPE Volclay\

TOP OF _FILTER PACK 17.0' "

._ _-_------ SEAL TYPE Bentonite ½"pelletTOP

OF SCREEN 19.0' /_i >

= SCREEN TYPE stainless

CENTRALIZER DIAMETER 2"DEPTHS 19' & 29' SLOT SIZE 0.010

BOTTOM _ __ __ FILTER PACK TYPE _B-40

OF SCREEN 29.0'

TOTAL DEPTH 30' _,_

COMMENTS

PMC REPRESENTATIVE SIGNATURE ..... DATE _._--O;_-c...'-, I

I II --LI '" , ,',, ,II

• i i i | iii


PAGE 1 OF 1

rTE lD: SLOUGH _ LOCATION HD:HW-1032 " GROUNDWATER LEVELSTE COORDINATES (FT.): .... DATE TIME " DEP}__;' (FT.)

E 01-31-91 1130 8.0'

ROUND ELEVATION (FT. MSL): ,RILLING METHOD: HSA 6];'id ._RILLING CONTR.: GeotechnoloKy LOCATION DESCRIPTION _woodedATE ST.ARTED: 31 Jan 91

ATE COMPLETED: 04 Feb 91 SITE CONDITION frozen sround, cleared

IELD GEOLOGIST/ENGINEER: A. Litter with dozer 25°F

_. _ a. CPM BLOWS z _, VISUALCLASSFICATIONDEPTH _ I.U _<v. _ (OPT.) PER 6 IN. ',£>

_ _= ,, ,, ,0-2 ' 8" 3-2-2-3 8" top soil dark brown to soft brownish

gray silty clay3201

2-4 18" 0-1-2-1 soft brown" silty clay with organics - CI

3202 4-6 24" 0-i-I-I soft brown silty clay to gray silty cla_5 with sand - CL

_

3203 ° 6-8 24" 0-0-0-0 v. soft gray silty clay, trace sand - CI.

3204 8-10 18" _ 0-0-0-I v. soft gray silty clay trace sand to

- 8,3' loose gray sand some clay-CL to 5C

I0 10-12 12" 0-1-1-2 v. loose gray clay sand and organics to11.8' brown fine and med sand-SC/OL to c

12-12 i" 50/1" stiff yellowish brown clay and limestone

fragments

1415

,

50% • Limestone hard, gray, microcystalline,

17.8 highly fractured and broken, possibly_. mechanical break. Good H^O return

fracture or void @ 17.5'z

20_l

l

100% Limestone hard, white, microcrystalline,

highly fractured and argillaceous to

18.2' some green clay. 4" gray shale @

25 -- 19' very argillaceous limestone green

and gray to 21' gray argillaceous llme-___ 311stone some discoloration, stylolitic,

427.8 clay seam @ 25'. Vug filled with calcite

crystals @ 27.3'

100% _ Limestone hord, white, microcrystalline,

30 30 fresh, ar_illaceous some discolorationwater @ 8' AR @" 14'

_OMMENTS"

!



PAGE l OF 2

WELL NUMBER MW-1032 DATE 07 Feb 91

FIELD PERSONNEL , Dale Meyer/Scott Hilderbrand/A. Limmer

STATIC WATER LEVEL4' bmi 02-07-91 TOTAL DEPTH 30'


DEVELOPMENT METHOD(S) 2" pvc bailer by hand

BEGINNING TIME

INITIA'L WATER CONDITIONS clear in first bailer_ cloudy after

RECHARGE RATE slow

END TIME

TOTAL VOLUME REMOVED 68.5 GALS.


FINAL TURBIDITY MEASUREMENT n/a NTU


COMMENTS -see attached ( well bailed dry I0 times)


PMC REPRESENTATIVE SIGNATURE _'_',-.--.'_ DATE O'_-0_"_I.... _ V....

Subject MW-lO32: Page 2 of 2


6.89 pH, 10°C, 1030 umohs



7.05 pH, 9°C, 1340 umohs



7.25 pH, 9°C, 1270 umohs

dry after 7.5 gal removed ..

4) 12 Feb 91

water level @ 7'

6.80 pH, 9°C, 1160 umohs



" 7.45 pH, 8°C, 1340 umohE


6) 22 Feb 91• water level @ 5.5'

7.25 pH, 9°C, 1240 umohs



7.40 pH, 9°C, 1170 umohs


8) 27 Feb 91water level @ ii'

7.24 pH, 10°C, 1210 umohs



7.73 pH, 10°C, 1000 umohs


I0) 01 Mar 91water level @ 9'

7.50 pH, 10°C, 1100 umohs


30' well

i iii Bill ii I li i IIi II



WELL NUMBER MW-1033 DATE INSTALLED 20 Feb 91

PMC REPRESENTATIVE Craig S. Jones DRILLER Dale Meyer

I I I I i III I I II I IIII III


TOP OF CASING 2.5' _ LOCKED-DATE 02-22-91

SURFACE SEAL TYPE ][eadv ,mix

GROUNDSURFACE _ _ __ THICKNESS3'TOP OF s4fl i BOREHOLE DIAMETER__

, / IGROUT 1 _ :; CASING TYPE stainless

BOTTOM OF --/II I DIAMETER 2"

PROTECTIVE CASING 2.0' / I II II II Iv I _ OUTER CASING TYPE. n/aI I-"

•BOTTOM OF I I DIAMETER n/aOUTER CASING n/a .L I

TOP OF SEAL 81' --- GROUT TYPE Volclay & initiatork

TOP OF _ _

FILTER PACK 85' _ _ __------SEAL TYPE ½" Bentonite pelletTOPOF SCREEN 87.5'

< -- >

A = SCREEN TYPE stainless steelCENTRALIZER DIAMETER 2"DEPTHS 97' & 86' SLOT SIZE 0.010

BOTTOM -m------ FILTER PACK TYPE WB-40OF SCREEN 97.5' >

TOTAL DEPTH 97"5' - .-|111 I iii I I iii i III I •lUl

i I i

COMMENTS Casing to have another riser added to it before protective casinginstalled.

PMC REPRESENTATIVE SIGNATURE _ j_h_._. DATE O_.O_-%\_O'-IIII I I I J I I

WELDON SPRING SITE REMEDIAL ACTION. PROJECTBOREHOLE LOG

PAGE .1 OF 4[ i| _ i i

rE lD: SLOUGH LOCATION IO: MW-1033_ _ GROUNDWATER LEVELS-_ -- - DATE I TIME ' DEPTH (FT.)-''E COORD_qATES (FT.): "' 02-13-91 ' ""-1330 20.0 --

E ,, -- ,.= , ,

;OUND ELEVATION (FT. MSL): _ ,, - , ,,} ,,:iLL_NG METHOD: HSA 6} 'ld - .....

:U_LffqG CONTR.: Geotechnolo_y LOCATION DESCRIPTION S o.f slough

_TE STARTED: 13 Feb 91

_TE COMPLETED: 20 Feb 91 SEE CONDFFION open fieldnFOLOGIST/ENGINEER: A. Limmer_LD

-J CPM BLOWS_. E a. _ -J V_UAL CLASS_=_3ATK)N

EPTH :_ uJ _. o (OPT.) PER 6 IN. <P _uJ :>< z Eo9 - r.o ., • ,

_- 0-2 8" _ 2-2-3-4 dk. brown silty clay - CL

2-4 12" i-3-3-3 m. stiff 5rm_n silty clay - CL/CH

_301 __ _1-2-2-3 m. stiff brown clay with silt to siltyo 4-6 18"

5 ---' clay, some organics - CH to CL,.

- q; 6-8 _ 24" ___ _ i-2-2-3 m. stiff brown silty clay - CL

-- | 8-10 24" _ _ 2-3-4-5 stiff brown clay - Ch

lO -- 10-i2 .30" 1-3-3-5 m. stiff brown and gray clay - eH

3303 ,,

-- 12-14 30" 2-2-2-2 soft: brownish gray clay trace sand to s lty- clay trace sand-eH to eL with sand laye s

,,

__ 2-5-7-7 m. dense sandy clay to silty sand, fine14-16 24" , ,,

3_4-_._u __ brown SC-SM

-- 16-18 12" _ _ 2-3-3-3 loose brown fine silty sand to fine.... sand - SM-SP

___ 18-20 _ 18'----7-'--_-----'_-------1-3-3-7 m.sanddense_brownsP_SCfine sand to gray clayey

20 - 20-22 -2"12" _-------- i-2-4-4 m. dense gray fine sand - SP

i25 -- '

_

-

30 _ _ _ _._..m_._., ........ ,j l,

-----'----_ . Sand heaving up into augers.OMMENTS: Hit water @ 20 . Stopped sampling @ 22'

Checked every five feet .... r z -, -_-................ _-- -,--,, /-, _ _ ,: ---" _ .....

augers. Hit gravel @ 65'.

r

i i n lull I i i I1| I i n IINNNII I

WELDON SPRING SITE REMEDIAL ACTION PROJECT •BOREHOLE LOG

PAGE _2.__ OF -4

i li ,, i

rrE lD: SLOUGH LOCATKON Ek. MW-1033 GROUNDWATER LEVELS- • -- DATE TIME ' DEPTH (FT.)[PE COORDWqATES (FT.): ........

E 02-13-91 133() ......20'.'()'

ROUND ELEVATION (FT. MSL): _

RLL#qG METHOD: HSA 6_'idRR_L_G CONTR.: Geotechnolo_y LOCATION DESCRIPTION s. of slou_h

ATE STARTED: 13 Feb 91

ATE COMPLETED: 20 Feb 91 - S_E CONDrRON, open field •IELD GEOLOGIST/ENGINEER: A. Limmer

n. CPM BLOWSn. Z .J V_UAL CLASSI=_3ATK3N

DEPTH _ Ua _< OUap (OPT.) PER 6 _q. <:>_o_ ,,on- ..............

Sand

,, SP

35 -

d,

, 40 -

,_ ,,,.. _

" 45 --

i

- 50 -

- 55 -

COMMENTS:

/

i

°

WELDON SPR|NG SITE REMEDIAL ACTION PROJECTBOREHOLE LOG

PAGE __!_..3 OF __L4 .

GROUNDWA']"ER LE_/ELS ' '--

'E lD: SLOUGH _ LOCATION lD: L MW--I033_ ' D_ATE 'TIME ' DEPTH (FT.) -E COORDINATES (FT.): ................ -02-13-91 1330 20.0'

E __ , , .. , , ,,

OUND ELEVATION (FT. MSL): _ - , _ , , ,K.LING METHOD: HSA 6_"id .......ILLING CONTR.: -- Geotechnolo_y LOCATION DESCRIPTION _ S. of slou_;h.TE ST.ARTED: 13 Feb 91

.TE COMPLETED: 20 Feb 91 SITE CONDITION open field

tLD GEOLOGIST/ENGINEER: _" Limper

EPTH _: pW _ _ . PER 6 IN. >_Z o_" ----

_

._.L

65-67 2" 7-ii-i0-13 gray fine sand to multicolored fine55 - gravel - SP/GP

----- I

70 -----

75

80 - 81.8 Gravel to 82.5'Limes tone hdrd, white and gray,

---------_ _ _ aphenitic, stylolitic, fresh ..,_..8"2;.5'

, -- Plattin _:.85 -- • , "-_"

i09_

J

ii

9-F--, Hit refusal @ 2.5'.OMMENTS:

lm ,, i, i i , i ,,,, , _ _

/

| |1 i iiii i _ i iiii


PAGE. 4 OF 4._

GRouNDwATER LEVELS

lTE lD: SLOUGH ,, LOCATION _: _ , DATE' " TIMIE DEPTH'iFT.)rrE COORDINATES (FT.): .........

-- E _ 02-13-91 , 1,330 20.0'-- .

ROUND ELEVATION (FT. MSL): _ 2"HSA 61"id; NX coreRE.LING METHOD: - " ' -- -RX.L_G CONTR.: Geotechnology LOCATION DESCRIPTION : S. of slough

ATE STARTED: 13 Feb 91 _ . •

,ATE COMPLETED: 20 Feb 9I SITE CONDITION open field

IELD GEOLOGIST/ENGINEER: A. Limmer _ .,.,,

-J "J CPM BLOWS m¢ _ z ,.J VISUALCLASSIFICATIONDEPTH _ uJ _<v. _ (OPT.) PER 6 IN. <>

_ _¢ .....

-- 90 Lime:tone herd, white and gray, ',,

aphenitic, stylolitic, fresh plattin._

_oo_

95 -

° 97.5core TD @ 97.5'

ream TD @ 97.5'

I00 -, a

...... _

li • I ' I l I, II • '



PAGE 1 OF 2

WELL NUMBER MW-1033 DATE - 07 Mar 91

FIELD PERSONNEL. Paul Guerrein/A. Limmer

STATIC WATER LEVEL 2' of water in hole ..... TOTAL DEPTH 97' bg !


DEVELOPMENT METHOD(S) 2"_vc .bailer by h_pd

BEGINNING TIME

INITIAL WATER CONDIT.IONS cloudy


--_--m--

END TIME


TOTAL WELL VOLUMES REMOVED GALS.

n/aFINAL TURBIDITY MEASUREMENT ........ NTU

FINAL WATER LEVEL 2' of water in hole FINAL DEPTH ....

COMMENTS -bailed well i0 times


PMC REPRESENTATIVE SIGNATURE _ _ __ _ _ DATE_O_-_-_._

Subject MW-lO33 Page 2 of 2

I) 22 Feb 91water level @ 17'




8.45 pH, 10°C, 640 umohs



8.41 pH, 10°C, 620 umohs



8.15 pH, 10°C, 720 umohs



8.33 pH, 13°C, 730 umohs

" dry after i/2 gal removed

6) Ol Mar 91water level @ 96'

• 8.52 pH, 10°C, 660 umohs

dry after i/2 gal removed

7) 04 Mar 91water level @ 96'




7.17 pH, 12°C, 810 umohs





i0) 07 Mar 91water level @ 96'

7.65 pH, II°C, 820 umokls


97' well

iii I ii I II



WELL NUMBER HW-I034 DATE INSTALLED I0 Jan 91

PMC REPRESENTATIVE Craig S. Jones DRILLER Dale Me}terI I - I I

II I


\ •TOP OF CASING 1.0' _ LOCKED-DATE 10 Jan 91

I SURFACE SEAL TYPE

GROUND _ THICKNESS 2.0'SURFACE =_ _,_,,

GROUT 1.5'! CASING TYPE _t_n]_s steel/

BOTTOM OF/I DIAMETER 2"

PROTECTIVE CASING _.0' / II

==

IIz OUTER CASING TYPE n/a

I DIAMETER n/a•BOTTOM OF IOUTER CASING n/a _.t

TOP OF SEAL 55' ------GROUT TYPE Volclay & initiator

TOP OF X_ ill I

FILTER PACK 58.0' :;;._ _ SEAL TYPE 3/4" Bentonit.epellet

TOPOF SCREEN 64.0'

SCREEN TYPE s_ta±nlesss,.tee!C ENT R A L IZE R DIA METER 2"DEPTHS 73' & 63.5'

SLOT SIZE 0.010BOTTOM

OF SCREEN 74.0' _ FILTER PACK TYPE WB-40

TOTAL DEPTH 75.0' .-II II ii

COMMENTS

PMC REPRESENTATIVE SIGNATURE _"_ _ _Wk''--_'''"..... DATE_ t:>X.-n_-'%l(...j"

i i i I I I III IIII - I

t

.i i i J iii i ....

i


• PAGE-1 OF 3

- T I I ni I , , , __

"E lD: QY LOCATION HD: _-1034 GROUNDWATER LEVEL %DATE I TIMIE ' PTH (FT.)

"E COORDINATES (FT.): -_ 0i-07-91 ...... 0900 '60_2'. bg'l-E , ,,,,

-OUND ELEVATION (FT. MSL): _ - ,,HSA 6}"id; 2"ld NX '

ILLING METHOD: ....... "'ILLING CONTR.: GeotechnoloKy - LOCATION DESCRIPTION wooded

,TE ST.ARTED: 03 Jan 91 •

,TE COMPLETED: 09 Jan 91 SITE CONDITION" snow on ground, sunny30=F"LD GEOLOGIST/ENGINEER: _A..L_mmer _

6_._.m._. _ _..__.._.._u___. _ .... , , .. ---- ., ,, , ..= __w

-u cPM BLOWS Z_ =L VISUAL CLASSIFICATION

EPTH :_ uJ _ _ (OPT.) PER 6 IN. <,< P- >Z tr(1) -- co .........

-- ' 12"- 4'5-2-4 . gravel to 2" brown silty clay - Ct,

340i _ !8" . - 1-2-3-4 brown and gray silty clay with Festains - CL

,

on" -- 2-5-5-7_ &.%/

.=,

I0 4-7-8-i0 brown silty clay- CL, .,.

15 -2.4" - 4-9-9-10 brown and gray silty clay with sand-CL

- - 7-9-8-6 brown and gray silt, some v. fine sand,20 _'"__ trace clay to 20,5' 4" lt. brown silty

sand seam 20.9' brown, silty clay withsand

n,,, -- 4-7-7-8 brown silty clay, trace to with sand-CL25 "_

4" reddish brown clayey sand to 29.3'

30 , , 4-5-5-6 i lt. brown v. fine sand, no _radin_-SP

OMMENTS: ..

/

/

' T.._ " , ......... , , i......

°


PAGE, 2 OF 3

" " GROUNDWATER LEvELs

'E lD: QY .... LOCATE)N E): LMW-1034-- , DATI= ......... TIME '-DEPTH (FT.) "E COORDINATES (FT.)" .............

E _ 01-07-90 0900.. .60.2' bgl

OUND ELEVATION (FT. MSL): _ - ........HSA 6}"ld; NX 2"lD

iLLING METHOD:ILLING CONTR.: Ge°techn°l°_7 _ LOCATION DESCRIPTION , wooded

03 Jan 91.TE STARTED:

.TE COMPLETED: 09 Jan 91 SITE CONDEION __snow on groun,dz sunny _A. Limmer 28-30°F

;LD GEOLOGIST/ENGiNEER:• __ _. __

n. 0 cPM BLOWS = _ VISUALCLASSIFICATION

_ _ O (OPT.) PER 6 IN. <>,.. ii |. i i i i i i i1_ i ii i

. ,

_0 29-31 24" 4-5-5-6

,,

_

-- ---L_- "

-- 34 -- 24" 3-10-9-12 brown v. fine sand some silt to 35'

35 - 36 _ it. brown v. fine sand - SP

-- 39 I _,,, J. 3-6-4-5 brown silt and sand with clay -SM/ML.40 .....,,

-- brown v. fine sandy silt to 42' brown-- 3402 24" 3-4-4-5__ _ v. fine sandy clay to 42.7' lt. "brown v i

_ 24" 3-2-3-3 fine sand -CL/SM to CL/SC to SP " I45 ,._ I.,., -- , brown silty clay w_th v. fine sand to I

_ -- 44.2' brown silt/ clay -CL/CH " !

• oversaturated from 44 to 44.5' I

___

49 24" -- 2-4-5-6 tan and gray clay with silt and Mg _ode_

50 51 trace Fe staining- CH 1

---------_---'----''----------- redddi;h biO_s _la; lSt,h Vth_icedllY:llow"

----- 5455 -- _" - 2-25-27-50 3"

56 I=_ r h e, - residue) -CH to 54.5 white sand and

-- i__.____.----------- ims fragments to yellow highly weathered--'-----'-----'---- . ims.

60....

OMME qTS: Red head broke @ !550. ReLnovea i5' of au£ers and spun cuttin£s ,up.AL @ 57.5 began coring @ 59.5'.

/

• i ii i -- i i liI I

..--.--_"

WELDON SPRING SITE REMEDIAL ACTION PkOJECTBOREHOLE LOG

PAGE 3 OF|1 ii =1

ilTE lD: QY LOCATION lD: MW-1034 GROUNDWATER LEVELS;lTE COORDINATES (FT.): DATE TIME ' ' DEPTH (FT.) -

01-07i91 ,.09'00 ....... 60.2' bgl -EI ,, ,,

IROUND ELEVATION (FT. MSL): ......HSA 6}'id; NX 2"id

pRILLINGMETHOD: .....Geotechnology LOCATION DESCRIPTION - woodedtRILLING CONTR.:03 Jan 91

)ATE STARTED:)ATE COMPLETED: 09 Jan 91 SITE CONDITION snow and ice on _round"IELD GEOLOGIST/ENGINEER: A. Limmer sunny with clouds_ 20°F

CPM BLOWSo. _- z -i VISUALCLASSIFICATIONDEPTH =E _ _<Ouj (OPT.) PER 6 IN. <.< :>_;_ _,-,- ..............

59 5 No H^O return.• Z

Limestone h_rd, gray, slightly fossilif rous

-- "_ineiy crystalline, large vugs to 52.5'

with Fe staining. Fe staining to 64'.

Limestone gray and white, argillaceous,

_ h_rd, aphenitic, few small clay seams.- 65L 0.05' shale @ 67.6 fissile.

. 100%. _

-- 69.5- 70 - poor H20 return• Limestone hQrd, gray and white, aphenit c

qreneceous, fossiliferous

- 100%

74.7- 75

--

__

__

_

J__

_

_

l

,,

i i i i ii ii i=llj i ,i i ii, iiii

Boring terminated @ 74.7' (core)COMMENTS: Reamed to 75'.i,

/



PAGE 1 OF 2

WELL NUMBER MW-1034 DATE 06 Feb 91

FIELD PERSONNEL. Paul Guerrein/Scott Hilderbrand/A. Limmer

STATIC WATER LEVEL 57' bgl 02-06-91 TOTAL DEPTH 75'


DEVELOPMENT METHOD(S) r 2" stainless steel bailer by hand

BEGINNING TIME ....

INITi_L WATER CONDITIONS ¢loud,y


END TIME



n/aFINAL TURBIDITY MEASUREMENT NTU


COMMENTS -see attached (well bailed dry I0 times)

-water clear @ end of development, ,,


I) 06 Feb 91 I0) Ol Mar 91water level @ 57' water level @ 70'

7.30 pH, 10=C, 770 umohs 8_22 pH, Ii °C, 720 umohs

dry after 7 gal removed dry after 1 gal removed

.... 07 Feb 91

water level @ 68' 75' well

did not bail or test q


7.05 pH, 9°C, 870 umohs


3) ii Feb 91waterlevel @ 63'

7.25 pH, 10°C, 800 umohs


12 Feb 91

water level @ 68'

did not bail or test

4) 14 Feb 91water level @ 61.5

6.87 pH, 9°C, 840 umohs

- dry after 6.5 gal removed


7.17 pH, 14°C, 580 umohs



7.30 pH, 12°C, 730 umohs









8.25 pH, 12°C, 670 umohs


quarry detection monitoring wells completion report …

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