NCD122263825_19810801_JFD Electronics - Channel Master_FRBCERCLA RI_Work Plan for the Phase II Remedial Investigation - Feasibility Study-OCR

WORK PLAN
FOR
Contract Number 68-W9-00S8
REVIEW DRAFT
THE PHASE II REMEDIAL INVESTIGATION/FEASIBILITY STUDY
AT THE
JFD ELECTRONICS/CHANNEL MASTER SITE
PREPARED FOR
THE U.S. ENVIRONMENTAL PROTECTION AGENCY
BY
BECHTEL ENVIRONMENTAL, INC.
AUGUST 1991
--~:~·::~f:·:~:::~·-.
/._;, r ' '-~"' ,-~j•-11/4· ..... ~-, ,:S :"'\ ~-._ >~ t~ •>,f"'.• ;c Qj
:,i . 'fl -~ ..-· "" ..... "'
State of North Carolina
Department of Environment, Health, and Natural Resources
Division of Solid Waste Management ·
P.O. Box 27687 · Raleigh, North Carolina 27611-7687
James G. Martin, Governor
William W. Cobey, Jr., Secretary
Mr. McKinzie Mallary
Remedial Project Manager
US EPA Region IV
345 Courtland Street, NE
Atlanta, GA 30365
August 29, 1991
Re: Phase II Remedial Investigation Work Plan
JFD Electronics/Channel Master, NCD 122 263 825
Oxford, Granville County, NC
Dear Mr. Mallary:
William L. Meyer
Director
The North Carolina Superfund Section has received and reviewed the Phase II
Remedial Investigation Work Plan for the subject site and has the following comments:
1. The NC Superfund Section received the Draft Work Plan for the Remedial
Investigation/Feasibility Study on 23 February 1990 and comments were
forwarded to EPA Region IV on 16 March 1990. Our office has not received
the Final Work Plan dated October 1990 and referenced throughout the
subject document as "Phase I RI WP (ref.l)". It is requested that a copy of
the October 1990 Work Plan be forwarded to our office. The Phase I
Remedial Investigation analytical data mentioned in the cover letter
accompaning the subject document also has not been received by our office.
It is requested that this data also be forwarded for our files.
2. On page 5, the April 1988 Channel Master investigation is referred to as
reference 2. On page 19 reference 2 is listed as "Letter from: Coffield,
Ungaretti, Harris and Slavin, to Mr. ,Bruce Clemens, Bechtel, 26 December
1989".
•
3. In the second item under Section 1.5, page 10, reference is made to
"contamination in discrete on site areas mentioned in Section 1.5". This
"contamination in discrete areas" is not identified in Section 1.5 however.
4. In Section 5.2.4 reference is made to surface water and sediment samples that
will be "collected from two locations upgradient of the site (Figure 5-5)". One
of the sample locations identified in Figure 5-5 on page 18 is downgradient
of the site.
The North Carolina Superfund Section appreciates the opportunity to review this
document. If you have any questions please contact me at [phone].
cc: Curt Fehn
JB/kc
Sincerely,
Jack Butler, Environmental Engineer
Superfund Section
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
REGION IV
AUG 16 1991
Mr. Jack Butler
Superfund Section
345 COURTLAND STREET. N.E.
ATLANTA, GEORGIA 30365
N.C. Div. of Solid Waste Management
Suite 150
401 Oberlin Road
Raleigh, North Carolina
Dear Mr. Butler:
. The Phase I Remedial Investigation analytical data is complete and
several data gaps do exist. As a result, Bechtel will be collecting
additional samples during September 1991. Attached is a copy of the
Phase II Remedial Investigation Work Plan.
Please review this work plan and return any comments to me by
September 4, 1991. Contact me at [phone] if you have any
questions regarding this matter.
Sincerely,
!!le~~
Remedial Project Manager
Printed on Recycled Paper
,;II, • ,,,. •
Contract Number 68-W9-0058
REVIEW DRAFT
WORK PLAN
FOR
THE PHASE II REMEDIAL INVESTIGATION/FEASIBILITY STUDY
AT THE
JFD ELECTRONICS/CHANNEL MASTER SITE
PREPARED FOR
THE U.S. ENVIRONMENTAL PROTECTION AGENCY
BY
BECHTEL ENVIRONMENTAL, INC.
AUGUST 1991
1.0
2.0
3.0
4.0
5.0
6.0
7.0
CONTENTS
INTRODUCTION
1. 1 Overview . . . .
1.2 RI/FS Objectives
1.3 Summary of Phase I RI Activities and Data Gaps
1.3.1 Phase I RI Activities
1.4 Nature and Extent of Contamination
1.4.1 Surfacewater and Sediment
1.4.2 Subsurface soils ..... .
1.4.3 Shallow Groundwater ... .
1.4.4 Medium and Deep Groundwater
1.4.5 Residential Wells
1.4.6 Sludge Drying Beds .... .
1.4.7 Former Lagoon Area .... .
1.5 Data Gaps and Phase II RI Objectives
1.6 Overview of Phase II RI Activities
1.7 Project Organization .....•..
SITE BACKGROUND, PHYSICAL SETTING, AND EXISTING
CONDITIONS ....
INITIAL EVALUATION
WORK PLAN RATIONALE
Phase II RI/FS TASKS
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
Task 1: Project Planning
Task 2: Community Relations
Task 3: Field Investigations
5.2.1 Surveying borehole, well and UST locations
5. 2. 2 Onsi te Soils Investigation . . . . . . . . .
5.2.2 Hydrogeologic Investigation ...... .
5.2.4 Surface Water and Sediments Investigation
5.3.4 Air Investigation ..... .
Task 4: Sample Analysis and Validation
Task 5: Data Evaluation .. .
Task 6: Risk Assessment .. .
Task 7: Treatability Studies
Task 8: RI Report . . . . . .
Task 9: Remedial Alternatives Development and
Screening •...
5.10 Task 10: Detailed Analysis of Alternatives
5.11 Task 11: FS Report
HEALTH AND SAFETY
SCHEDULE
REFERENCES . •
i
1
1
1
1
1
2
2
2
5
5
5
5
5
10
10
11
11
11
11
11
11
11
11
11
13
13
16
16
19
19
19
19
19
19
19
19
19
19
19
Figure No.
1-1
1-2
1-3
1-4
1-5
1-6
5-1
5-2
5-3
5-4
5-5
LIST OF FIGURES
Title
Phase I Surface Water and Sediment Locations
Phase I Borehole Locations
Phase I Monitoring Well Locations
Phase I Hydrocone Locations
voe Plume
Residential Well Sample Locations
Existing Site Map
Phase II Proposed Shallow Soil Sampling
Locations in Sludge Pits and Vicinity
Boreholes Monitoring Wells and Temporary
Well Point Locations
Location Strategy
Phase II Surface Water and Sediment
Sampling Locations
ii
3
4
6
7
8
9
12
14
15
17
18
LIST OF TABLES
Table No. Title
5-1 Summary of Number of Proposed Samples and
Analytical Requirements
5-2 Summary of Samples for CLP Analysis
iii
20
21
ARAR
ATSDR
CEC
CERCLA
CFR
CLP
CRP
DCA
DCE
DQO
EP
EPA
ESB
FFS
HSP
JFD
MCL
NCDHR -
CERCLA
NCP
OSWER
PCE
POTW
ACRONYMS
applicable or
requirements
Agency
Substances
Registry
for
and
relevant
Toxic
Disease
cation exchange capacity
and appropriate
Comprehensive Environmental Response
Compensations and Liability Act of 1980
Code of Federal Regulations
contract laboratory program
Community Relations Plan
dichloroethane
dichloroethene
data quality objective
Extraction Procedure
U.S. Environmental Protection Agency
Engineering Support Branch of EPA Region IV
focused feasibility study
health and safety plan
JFD Electronics
Maximum Contaminant Level
North Carolina Department of Human Resources
CERCLA Unit
National Contingency Plan
Office of Solid Wastes and Emergency Response
tetrachloroethene
publicly owned treatment works
iv
QA
QA/QC
QAPP
QC
RCRA
RI
RI/FS
RPM
SARA
SHSP
S&ME
SOPQAM
sow
TAT
TCA
TCE
TCL
TCLP
TOC
USGS
voe
ACRONYMS
(cont'd)
quality assurance
quality assurance/quality control
quality assurance project plan
quality control
Resource Conservation and Recovery Act
remedial investigation
remedial investigation/feasibility study
remedial project manager (EPA)
Superfund Amendments and Reauthorization Act
site health and safety plan
Soil and Materials Engineers
Standard Operating Procedures
Assurance Manual
statement of work
technical assistance team
trichloroethane
trichloroethene
Target Compound List
Quality
Toxicity Characteristics Leaching Procedures
total organic carbon
United States Geological Survey
volatile organic compound
V
ft
ft2
gal
in
kg
L
mi
ppb
ppm
RfD
yd
ydJ
ug
ABBREVIATIONS
vi
feet
square feet
gallon
inches
kilograms
liter
miles
parts per billion
parts per million
reference dose
yards
cubic yards
micrograms
1,0 INTRODUCTION
The U.S. Environmental Protection Agency (EPA), Region IV, under
Work Assignment No. 03-4L3L, has retained Bechtel Environmental
Inc., (Bechtel) to conduct a Remedial Investigation/Feasibility
Study (RI/FS) at the JFD Electronics/Channel Master (Channel
Master) Superfund site, Oxford, North Carolina. As a part of this
RI, sampling and analysis were performed by Bechtel at the site
during January and February 1991 based on the EPA approved Work
Plan, dated October 1990 (hereafter referred to as Phase I RI WP,
Ref. 1) . Based on a preliminary review of the data collected
during the Phase I RI, it was identified that there were data gaps
in defining the nature and extent of contamination. In July 1991,
EPA authorized Bechtel to conduct a Phase II RI to supplement the
Phase I data. This Work Plan is an addendum to the Phase I RI WP
(Ref. 1). In general, procedures that are described in detail in
the Phase I RI WP, are not repeated in this document, but are
incorporated through reference.
The following is an overview of the scope of work, Phase II RI
objectives, and the project organization.
1,1 Overview
See Phase I RI WP (Ref. 1).
1,2 RI/FS Objectives
See Phase I RI WP (Ref. 1).
1.3 Summary of Phase I RI Activities and Data Gaps
1.3.1 Phase I RI Activities
Elements of the Phase I RI are outlined in the sampling and
Analysis Plan (Table 5-1 of the Phase I RI WP, Ref. 1). The
following RI activities were conducted at the site.
• Defined property boundary through civil survey; installed
two retrievable permanent monuments to establish planimetric
coordinates with reference to the state coordinates;
established an onsite grid for locating various sampling
points; measured elevations for all onsite sampling
locations; measured elevations of the monitoring well top of
casings.
• Collected 4 surface water and 4 sediment samples.
• Collected shallow groundwater samples from approximately 29
sampling locations.
1
• Collected soil samples at 5-ft intervals from 12 borehole
locations.
• Installed 5 monitoring wells (1 upstream 55-ft, 3 downstream
55-ft, and 1 downstream 35-ft) and collected water samples.
• Collected 3 residential well samples.
• Analyzed all the above samples and 3 of the 29 hydrocone
samples through CLP lab.
Phase I RI results provided information on the nature and extent
of onsite contamination and indicated the potential for migration
of contamination offsite. The onsite volatile organics
contamination plume in the shallow water was delineated to a
certain degree of accuracy based on field screening results.
Monitoring well locations were adjusted based on the field
screening results. However, several areas were not investigated
in any detail during the Phase I RI. These include distinct areas
such as the sludge pits and vicinity, lagoon area, soil adjacent
to the 8 11 clay pipe, locations of abandoned potential underground
storage tanks and the subsurface soil and groundwater along the
creek. Other areas that could not be delineated include:
horizontal and vertical extent of contamination, contamination of
surface water and sediment along the creeks running adjacent to
the southern fence line and running east of the site. The nature
and extent of offsite contamination was also not determined.
1.4 Nature and Extent of Contamination
1.4.1 Surfacewater and Sediment
Chromium and zinc were detected in the upstream (SD-01 and SD-04)
and downstream (SD-02 and SD-03) sediment samples (Figure 1-1).
These contaminants were also detected in downstream surfacewater
samples collected at SW-02 and SW-03. Generally, levels of zinc
and chromium in downstream samples were higher than the upstream
samples. Downstream surfacewater (SW-02) and sediment sample (SD-
02) were also contaminated with voes.
1.4.2 Subsurface soils
Subsurface soil samples were obtained with split-spoon samplers at
5-ft intervals from 12 boreholes drilled at the site (Figure 1-
2). Chromium was detected in one borehole sample collected from
the former lagoon area from a depth of 40 to 42-ft (BH-05). voes
DCE (3700 ppb) and TCE (7500 ppb) were detected in
2
w
0 0 [;:
w
N928700
N928600
N928500
N928400
N928300
N92BI 00
~ w
SV-OI/S0-01
CONTAMINATION CONCEIHRATlON
Tot-Ct /16
" "' Zn 0·810/140
Cu /21
S'i-02/S0-02
CONTAMINATION CONCENTRATION
Tot-Ct O· 006/26
Zn 0·550/71
cu /11
I, 2-D 21/120
TCE 92/19
PCE 30/46
20185 BECHTEL2.DGN
0
~ w
N927900
N927800
200
1' = 200'
i:i
400
~ w
;;; w
0 0
§
;;; w ~ w -
0 0 :;;
;;; w
NOTES: I. CONCEHTRAITONS ARE IN PPb
FOR ORGANICS .\NO PPm FOR UIORGANICS
FIGURE 1-1
CHANNEL MASTER SITE
SY4/S0-04
CONTAMINATION CONCENTRATION
Tot-Ct O•OI0/22
Zn 0, 019111
CU /15
~ w
---
s,,
FENCE LINE
DITCH
PROPERTY LINE
POWER POLE
LEGEND
1$) S.\NITARY SEWER )I.A.NHOLE
ff WATER VALVE l><l
PHASE I SURFACE WATER AND SEDIMENT LOCATIONS
D,n .-'.· u :, .... .
•o
;;; w
CONTAMINATION CONCENTRATION
Tot-Cr O-.D31/430
Zn 0.086/89
cu /46
Pb /20
;it, FIRE HYDRANT
-OHE-OVER HEAD ELECTRIC
<) GUY POLE
® WELL
♦ CONTROL MONUMENT
* SURFACE WATER AND
SEO IMENT SAW'l ING
LOCATION
0
203B5 BCMC, DGN
IS' -11'
200
l' , 200'
OIETHYL-
PHTHALATE 120
CM-eH-04-------
400
DEPTH CONTAMINATION CONCENTRATION
JO' -32' MEK 54
FIGURE 1-2
NOTES1 I, CONCENTRATIONS ARE IN ppb
FOR ORGANICS ANtl ppm FOR
INORGANICS
CHANNEL MASTER SITE
PHASE I BOREHOLE LOCATIONS
LEGEND _.........,._
• *
CONCENTRATION
1600
24,000
Nl II, 000
2100
FENCE LINE
OITCM
PROPERTY LINE
BOREHOLES
SLUDGE SAMPllNG LOCATION
borehole (BH-10) sample collected from 5 to 7-ft.
located adjacent to the concrete pad. Methyl ethyl
ppb) was detected in BH-12 at a depth of 30 to 32-ft.
1.4.3 Shallow Groundwater
BH-10 is
ketone (54
The Phase I RI showed voe contamination (DCE, TCE and PCE) in
shallow groundwater samples collected at 12 to 24-ft using the
hydrocone (name of the device used for temporary well point
groundwater sampling). CLP verification confirmed the findings.
Locations of shallow groundwater samples are shown on Figure 1-4.
For example, HC-07-22 is the groundwater sample collected from
location 7 at a depth of 22-ft.
The lateral extent of the contaminant plume in the shallow
groundwater is partly defined from Phase I RI results as shown on
Figure 1-5. The area south of the railroad, where there is a
potential for offsite contamination, was inaccessible during Phase
I activities.
1.4.4 Medium and Deep Groundwater
voes and Phenol were detected in monitoring well MW-05 (46.3-ft)
and all three downstream wells MW-02 (54.9-ft), MW-03 (36.3-ft)
and MW-04 (55.4-ft) were contaminated with voes (TCE, DCE, and
PCE). No contamination was detected in the onsite background well
MW-01 (53.0-ft). Locations of monitoring wells are shown on
Figure _1-3.
1~4.5 Residential Wells
Groundwater samples were collected from three residential wells
(Hightower's, Knott's and Dr. Finch's) located east of the site.
Cyanide was detected at a concentration of 6.6 ppb in the
residential well sample collected from Dr. Finch's property.
Locations of the wells are shown on Figure 1-6.
1.4.6 Sludge Drying Beds
During the Phase I RI, discolored soil was found in the sludge
pits area. Sludge pit sample collected at 0.5-ft depth just south
of the fence was contaminated with total chromium (24,000 ppm),
copper (1,600 ppm) and nickel (11,000 ppm). These concentrations
were similar to results obtained from the April 1988 Channel
Master investigation (Ref. 2) . Low levels of chromium were
detected in borehole samples BH-02 and BH-09 (Figure 1-2).
1.4.7 Former Lagoon Area
Of the 15 soil samples collected from the two boreholes in the
former lagoon area during the Phase I RI, one sample at 40-ft from
BH-05 showed total chromium contamination (230 ppm).
5
410. 67
CONTAMINATION CONCENTRATION
TCE 3600
PCE 2700
I, 2-0CE 250
CONTAMINATION CONCE.NTRATION
Ct-120
TCE 4300
PCE 190
20385 BCMW.DGN
:A
0' "' --~•;/ ',,"' '· ..
''\··. ,'--....
\ ~~~,: .. .. '0r··
FORMER , ~•
, -~--
TREATMENT ,._.-455. 01 PLANT
CH-MW-0
CH-MW-03 \\~i,..\l
-MW-02 .----::,.• \\i,..\\.:
-;;:;:;-· ~,...__,__,A".'.Y"---.. ,~ .. ~·
PCE 250
I, 2-0C£ 150
FIGURE 1-3
CHANNEL MASTER SITE
PHASE I MONITORING WELL LOCATIONS
0
NOTESi \, CONCENTRATIONS ARE IN ppb
FOR ORGANICS ANO ppm FOR
lNORGANICS
0
FENCE LINE
DITCH
PROPERTY LINE
MONITORING i'ELL
CHANNEL MASTER WELL
470.61, ETC. WATER LEVEL ABOVE NGNO
200 400
I' 0 200'
--4
0 AM
0
;;'
iii
~ ~ ~
20385 HC2.0GN
.I •I :,
••
----~ -------------· -------
c--c--5 M f
C a " 0
<00 c-3-4 c-9-4 ON A a o 00
HC-14
',, .... . ·:------..... ~~-.:-...______ ·-...______
200
c-9-
AM
C-- S OUP
A
C
!' = 200'
400
c--'"
IC
c-1-"
CON '"
·-...______ ~-·:::,
HC-19\
/ HC-07 ',
" 0 I
"
• M
' ' ' '
C-15
FIGURE 1-4
CHANNEL MASTER SITE
PHASE I HYDROCONE LOCATIONS
c-4-4
0 AM
c-8-5 co M
c-8-4
'"
.: "---. ... -· --
LEGEND
-t<------FENCE LINE
DITCH
PROPERTY LINE
6-4 E> HYDROCONE SAMPLING
C LOCATION = RAILROAD
All CONCENTRATIONS ARE IN ppb
C-8-D P
ONA
0
20385 HC. DGN
1' C 200'
FIGURE 1-5
CHANNEL MASTER SITE voe PLUME
,
'
I I ; I \ '
Pl
...
0
it~
•
FIGURE 1-6
CHANNEL MAS'rER SITE
IE LOCATIONS RESIDENTIAL WELL SAMPs
9
1.5 Data Gaps and Phase II RI Objectives
The objectives of the Phase II RI are to obtain additional data to
• Determine the vertical and horizontal extent of contamination migration offsite;
• Define the extent of contamination in discrete onsite areas mentioned in Section 1.5; and
• Incorporate Phase II data into the RI report. Data from the Phase I and the Phase II RI will be used in performing the Feasibility study for the site.
1.6 overview of Phase II RI Activities
An overview of the Phase II RI activities are described below:
• X-Ray Fluorescence (XRF) field screening analysis of surface and subsurface soil samples from the onsite sludge pits and vicinity;
• Sampling and analysis of subsurface soil samples collected from the former lagoon area (four corners);
• Sampling and analysis of groundwater samples collected from temporary well points installed along the creek starting from the housing development vicinity to determine the edge of the contaminant plume.
• Obtaining rock core samples from boreholes prior to well installation.
• The installation of deep (to bedrock) monitoring wells, one at the edge of contamination along the creek and the other at the background location, and groundwater sampling and analysis.
• Installation of an intermediate monitoring well adjacent to the offsite deep well.
• Surface and subsurface soil sampling along the abandoned 8 11
clay pipe from former storage area to the creek and head space analysis using a portable GC.
• Magnetometer survey to determine the location of abandoned potential underground storage tanks (USTs).
10
• Resampling residential wells.
• Additional surface water/sediment samples along the ditch in
the south and the ditch in the east.
1.7 Project organization
See Phase I RI WP (Ref. 1).
2.0 SITE BACKGROUND, PHYSICAL SETTING, AND EXISTING CONDITIONS
See Phase I RI WP (Ref. 1).
3.0 INITIAL EVALUATION
See Phase I RI WP (Ref. 1).
4.0 WORK PLAN RATIONALE
See Phase I RI WP (Ref. 1).
5.0 Phase II RI/FS TASKS
Tasks 1 through 11 are detailed in the following subsections.
5.1 Task 1: Project Planning
Task 1,
Addendum
and HSP.
Project Planning is comprised of this Work Plan, the
to the Phase I Field Operations Plan (FOP), Phase I QAPP
5.2 Task 2: Community Relations
See Phase I RI WP (Ref. 1).
5.3 Task 3: Field Investigations
5.2.1 surveying borehole, well and UST locations
Boreholes/temporary well points and well locations and elevations
will be surveyed and plotted on the existing site map. A
magnetometer survey will be performed to identify locations of
potential USTs. The locations of potential USTs are shown on
Figure 5-1. Interferences may exist at the locations shown.
11
~ i= sg
ABANDONED VITR1F1EO CLAY PIPE -
GN VI •FIG6 10365 S!TE.O
~~'?-i· .,.,,.. \)11i!~-
.\ ~ ,,\, •... . ,.,...-;;; / • ,§/st•" •. ---,;,--. /y-. -~ so i :~:;;;::-· .. L~-~. ---.
--~ ~
, . ' '
0
LEGEND
--. FENCE LINE --
1/////1,
200
DITCH
PROPERTY LINE
POTENTIAL USTS
!' C 200'
400
s.2.2 onsite soils Investigation
Abandoned Clay Pipe Area
The a-inch clay pipe (Figure 5-1) previously served as a discharge
line for solvents, and very high voe concentrations were observed
at the sewer outfall. Therefore, the soil adjacent to the pipe
will be investigated to determine if residuals from the pipe are
present in the soil. Ten soil samples will be collected to depth
of 3. 5-ft along the pipe and a head space analysis will be
performed for TCE, DCE and PCE using an onsite portable GC.
Sludge Pits Area
Soil samples collected from the eleven sludge pits by Channel
Master in 1988 and those collected during the RI (see Section 1.3)
indicated chromium, cadmium, nickel and cyanide contamination. To
define the lateral and vertical extent of contamination, samples
will be collected from the sludge pits and vicinity. Some of these
samples will be sent to the CLP laboratory for TCL metals and
organics analysis. The remaining samples will be analyzed onsite
for chromium, cadmium and nickel by XRF. The samples will be
obtained from locations (Figure 5-2) at depths of 0.5, 1.5, 2.5 and
3. 5-ft. The sampling is extended about 400-ft east of the
warehouse since open drains crossing the creek in this area were
observed in the aerial photos.
During 1987-88, about 17,000 cubic yards of contaminated sludge was
removed from the former lagoon and reportedly filled with clean
soil. Total chromium contamination was detected at a depth of
about 40-ft in sample collected from the former lagoon area during
the Phase I RI. To define the lateral and vertical extent of
contamination in the former lagoon area, subsurface soil samples
will be obtained from boreholes located at four corners of the
lagoon as shown on Figure 5-3. These samples will be obtained at
0.5, 10, 20, 30, 40 and 50-ft using a split-spoon and sent to the
offsite CLP laboratory for TCL volatiles, metals and cyanide
analysis.
s.2.2 Hydrogeologic Investigation
During the Phase I RI, shallow water samples collected at 12 to 24-
ft (Figure 1-4) using the hydrocone showed contamination due to
volatiles (TCE, DCE and PCE). CLP verification confirmed the
findings. Groundwater samples from monitoring wells were also
found to be contaminated. Based on these results, the lateral
extent of the plume was partly defined as shown on Figure 1-5.
13
10385 SITE.DON VJ•f!Gl
~ ~1/-·
.-A
FIGURE 5-2
CHANNEL MASTER SITE
, , .
..
PHASE II PROPOSED SHALLOW SOIL SAMPLING
LOCATIONS IN SLUDGE PITS AND VICINITY
0
LEGEND
---FENCE LINE
DITCH
PROPERTY LINE
e PROPOSED SHALLO'i SOIL
SAMPLE LOCATIONS FOR
FIELD SCREEtHNG PURPOSE
200 400
1', 200'
f-'
'-"
CONC PAO
~-· ••
N928000 OX.ORD PRINTING
I
0 200
1', 200'
20385 CMBHMW.DGN
LOCATI
• WATER S
--------------------
FORMER LAGOO
AREA --~1._
CM-BH-13
OR!LL SPOIL.
PURGE WATER
ORUM STAGING AREA
400
. ,,,-···
18" CHP ··· '···-···-± CM-BH-20 ... / ... __ v. _____ ... -···_,,.....
CM-BH-15
FIGURE 5-3
CHANNEL MASTER SITE
BOREHOLES, MONITORING WELLS, AND
TEMPORARY WELL POINT LOCATIONS.
CM-B}H!
6 ...
0 0 4
5"-BH-l8
LEGEND
FENCE L!HE
> CM-BH-11G
,,,,. ... r
O!TCII WI FLOW DIRECTION
PROPERTY L!HE
PROPOSED PHASE !I OEEP WELLS
PROPOSED PHASE !I !NTERMEO!ATE WELL
TENl'ORARY WELL POINTS
EXISTING CHANNEL MAffiR WELL
PHASE I PERMANENT BENCIIMARXS
However, the horizontal and vertical extent of the plume was not
defined. It is possible that the contamination has migrated
offsite since contamination was found along the southern boundary
of the site. Sample collected from Dr. Finch's residential well
had trace level of cyanide (6 ppb). No contamination was however
found in the groundwater samples collected from Hightower's
property which is east of the housing development area. Hence, it
is proposed to collect groundwater samples from temporary well
points at the water table, mid depth and at the top of bedrock from
the offsite locations shown on Figure 5-3 to determine the
approximate edge of the voe plume.
The first location, CM-BH-17 (location #1), will be adjacent to the
housing development area. Samples will be analyzed using an onsite
GC for TCE, DCE and PCE. Although the concentrations of these
analytes will be quantified whenever possible, due to the lower
sensitivity of a portable GC compared to a lab-scale instrument,
visible TCE, DCE or PCE peaks will also be taken to indicate that
contamination is present. If samples from the first location CM-
BH-17 are not found to be contaminated, samples will be collected
from the next temporary well point, CM-BH-19 (location #3) located
upstream of #1. Temporary well point will not be installed at
location CM-BH-18 (location #2) unless contamination is found at
location #3. If samples from location #3 are clean, a temporary
well point will be installed at location CM-BH-20 (location #4).
A maximum of 3 temporary well points will be installed to identify
the approximate edge of the plume along the stream. When the plume
edge is identified, a cluster well consisting of 1 intermediate
well (about 60-ft deep) and 1 deep well (about 100-ft deep) will
be installed at approximate plume edge. The strategy for
determining the plume edge is shown on the flow chart developed for
this purpose (Figure 5-4). One background onsite deep monitoring
well will be installed adjacent to the existing Channel Master well
shown on Figure 5-3 to establish a baseline for the site.
Groundwater samples will be collected from the background well and
the offsite well cluster and analyzed for TCL organics and
inorganics at the offsite CLP laboratory. Groundwater sampling
requirements are outlined in Table 1.
5.2.4 Surface Water and Sediments Investigation
Surface water and sediment samples will be collected from 2
locations upgradient of the site (Figure 5-5).
5.3.4 Air Investigation
See Phase I RI WP (Ref. 1).
16
LOCATION STRATEGY
Contamination
detected at
Southern boundary
of the site.
No Contamination
al Hightower's
Property
s"""Ie from # 1
Terq:x,rery well pt.
al\lT,MO&TBR
Is
\IT -Water Table
MD· Hid-depth
TBR • Top of Bedrock
Locations 1, 2, 3, end 4
are shown on the map
Contamination >----,-Yes -------+-----------------~-~ Found?
No r
S"""le from # 3 T~rary well pt.
Q IIT, HD & TBR
Is
Contamination>----Yes -----►---1S~le from# 2 Found? Teq:,orary well pt.
at \IT, NO and TBR
No
S"""le from # 4
Teq:,orery well pt
Q ~T, HO & TBR
Is
contamination _>---....lJOS...---------1
Found?
No
Revisit
Strategy
with EPA
FIGURE 5-4
LOCATION STRATEGY
17
No
t
Install Cluster
welt Q # 3
Install Cluster
wet l Q # 4
Yes Install
Cluster
well al
# 2
0
~ [J\ -a: '-
t;:; 'i\ (.)I>-\) ~ ?-"-\\; D '~--CHANNEL MASTER
MAIN BUILDING
0
0 50
E\::::,,E\d4
1', 50'
20385 5URFSE02,0GN
FINCH
; O
100
FIGURE 5-5
0
0
D
0
0
{)
()
(:::;
0
LEGEND * SURFACE WATER AND SEDIMENT SAMPLING
LOCATIONS
CHANNEL MASTER SITE PHASE II SURFACE WATER AND SEDIMENT SAMPLING LOCATIONS.
18
5.4 Task 4: sample Analysis and Validation
See Phase I RI WP (Ref. 1). Sample numbers and type of analysis
for each medium are given in Tables 5-1 and 5-2.
5.5 Task 5: Data Evaluation
See Phase I RI WP (Ref. 1).
5.6 Task 6: Risk Assessment
See Phase I RI WP (Ref. 1).
5.7 Task 7: Treatability studies
See Phase I RI WP (Ref. 1).
5.8 Task 8: RI Report
Results from the Phase II RI implemented subsequent to this Work
Plan will be incorporated into the RI report presently being
developed.
5.9 Task 9: Remedial Alternatives Development and screening
See Phase I RI WP (Ref. 1).
5.10 Task 10: Detailed Analysis of Alternatives
See Phase I RI WP (Ref. 1).
5.11 Task 11: FS Report
See Phase I RI WP (Ref. 1).
6.0 HEALTH AND SAFETY
See Phase I RI WP (Ref. 1).
7.0 SCHEDULE
Being prepared.
REFERENCES
1. Work Plan for
at the JFD
Environmental,
the Remedial Investigation/Feasibility Study
Electronics/Channel Master Site, Bechtel
Inc., October 1990.
2. Letter from: Coffield, Ungaretti, Harris and Slavin, to: Mr.
Bruce Clemens, Bechtel, 26 December 1989.
19
Medium
Surface
Water
Sediment
Soil
Soil
Soil
Ground-
water
Ground-
water
Table 5-1
SUMMARY OF NUMBER OF PROPOSED SAMPLES
AND ANALYTICAL REQUIREMENTS
Location Analytes Number of
samples
TCL metals, 2
organics, Cr +6
and Cyanide*
TCL metals, 2
organics and
Total Cyanide
Onsite sludge pits Cr, Cd
and vicinity and Ni
144
TCL metals, 16
organics and
Total Cyanide
Former lagoon area TCL metals, (6/hole)
organics and X 4 holes
Total Cyanide =24
S" clay pipe
Temporary well
points (TP)
1 onsite background
1 offsite cluster
TCE, DCE,
and PCE
TCE, DCE,
and PCE
TCL metals,
or~°fnics,
Cr and
Cyanide*
10
( 3 /TP)
X 3 TPs
= 9
(1/well)
X 3 wells
= 3
* The aqueous samples will be analyzed for:
Total Cyanide
Amenable cyanide
Weak cyanide
Dissociable cyanide
20
Onsite/
CLP lab
CLP
CLP
Onsite (XRF)
CLP
CLP
Onsite (GC) /
head space
onsite (GC)
CLP
Table 5-2
SUMMARY OF SAMPLES FOR CLP ANALYSIS
Matrix
Surface
Water
Sediment
Sludge Pit Samples
Groundwater
Soil Samples
Analysis
TCL Organics
TCL Metals
Hex. Chromium (SAS)
cyanide*
TCL Organics
TCL Metals
Total Cyanide
TCL Organics
TCL Metals
Total Cyanide
TCL Organics
TCL Metals
Hex. Chromium (SAS)
cyanide*
TCL Organics
TCL Metals
Total Cyanide
* The aqueous samples will be analyzed for:
Total cyanide
Amenable Cyanide
Weak Cyanide
Dissociable Cyanide
21
Number
2
2
2
2
2
2
2
16
16
16
3
3
3
3
24
24
24
of Samples