NCD986187094_19970113_Reasor Chemical Company_FRBCERCLA FS_Draft Work Plan - RI FS Project Assistance (Revision 0)-OCR

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Document Control No. 4400-45-AGBY
Revision 0
DRAFf
WORK PLAN
REMEDIAL INVESTIGATION/FEASIBILITY STUDY
PROJECT ASSISTANCE
REASOR CHEMICAL COMPANY SITE
CASTLE HAYNE, NEW HANOVER COUNTY, NORTH CAROLINA
Work Assignment No. 77-4Rl24
JANUARY 1997
REGION IV
U.S. EPA CONTRACT NO. 68-W9-0057
Roy F. Weston, Inc.
1880-H Beaver Ridge Circle
Norcross, Georgia 30071
WESTON W.O. No. 04400-077-096-0001-00
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Document Control No. 4400-45-AGBY
Revision 0
DRAFT
WORK PLAN
REMEDIAL INVESTIGATION/FEASIBILITY STUDY
PROJECT ASSISTANCE
REASOR CHEMICAL COMPANY SITE
CASTLE HAYNE, NEW HANOVER COUNTY, NORTH CAROLINA
Work Assignment No. 77-4RI24
JANUARY 1997
REGION IV
U.S. EPA CONTRACT NO. 68-W9-0057
Roy F. Weston, Inc.
1880-H Beaver Ridge Circle
Norcross, Georgia 30071
WESTON W.O. No. 04400-077-096-0001-00
RECEIVED
'JAN 2 4 1997
SUPERFUND SECTION
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Technical Review
Perfom1ed by:
DRAFT
RI/FS WORK PLAN
REVISION 0
RI/FS PROJECT ASSISTANCE
REASOR CHEMICAL COMPANY SITE
CASTLE HAYNE, NORTH CAROLINA
U.S. EPA Contract No. 68-W9-0057
Work Assignment No. 77-4RI24
Document Control No. 4400-77-AGBY
JANU Y 1997
Mark . aylor, P.G.
WESTON Work Assignment Manager
WESTON Project Engineer
William R. Doyle
WESTON Region IV Pro
Date: -1-1-/ l-'---1>+-'-/q__,_o/-__ 'f I
Date: __ l_-_1..c.S_-..c.9_,_ ___ _
Approved by: ________________ _ Date: ________ _
Giezelle Bennett
U.S. EPA Remedial Project Manager
Approved by: ________________ _ Date: ________ _
Robert P. Stem
U.S. EPA Regional Project Officer
WESTON W.O. No. 04400-077-096-000I-O0 I NOR/K:\WP\04400\077\WPMAT001.WP
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Section
1
2
3
TABLE OF CONTENTS
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: Table of Contents
Revision: 0
Date: January 1997
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...... 1-1
SITE BACKGROUND AND PHYSICAL SETTING .... 2-1
2.1
2.2
2.3
2.4
Site Location ... .
Site History .... .
Site Characteristics
.. 2-1
.. 2-1
.. 2-8
2.3.1 Physiography and Surface Drainage ............... 2-8
2.3.2 Regional Geology and Hydrogeology ............. 2-10
2.3.3 Local Geology . . . . . 2-11
2.3.4 Local Hydrogeology ....................... 2-12
References . . . . . . . . . . . . ... 2-13
CONCEPTUAL SITE MODEL . . . . . . . . . . . . . . . . . . . . . .... 3-1
. 3-1
. 3-1
3. I Overview . .
3.2 Study Areas .
3.2.1
3.2.2
3.2.3
3.2.4
3.2.5
3.2.6
3.2.7
3.2.8
3.2.9
3.2.10
3.2.11
3.2.12
3.2.13
Fonner Wood Chip Processing Area .....
Fonner Rosin Warehouse
North Tank Cradle Area
Work Tank Area ........... .
South Tank Cradle Area .
Fonner Laboratory Area .
Fonner Garage Area . . .
Fonner Still Area .....
Former Transfonner Area .
U-Shaped Settling Pond ......... .
South Ponds
Pond No. 3
Pond No. 4 .
. . 3-3
. 3-5
. 3-6
. 3-6
. 3-7
. 3-7
. 3-7
. 3-8
. 3-8
. 3-9
.. 3-9
. 3-10
. 3-10
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This document was prepared by Roy F, Weston, lnc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Dratt RI/FS Work Plan
Reasor Chemical Company Site
Section: Table of Contents
Revision: 0
Date: January ~ 997
TABLE OF CONTENTS (Continued)
Section Title
4
3.3
3.4
3.2.14 Drum Disposal Area ...... .
3.2.15 Former Refinery Building ... .
3.2.16 Above-Ground Piping System
3.2.17 Former Water Supply Wells
3.2.18 Sluice Area ..... .
3.2.19 Scrap Copper Area
3.2.20 Building Materials
Initial Identification of Applicable or Relevant and
Appropriate Requirements ....
Scoping of Remedial Alternatives .......... .
3.4.1 Identification of Preliminary Remedial Response
3-10
3-11
3-11
3-12
... 3-12
3-13
... 3-13
. .. 3-13
... 3-14
Objectives ............................. 3-17
3.4.2 Identification of Preliminary Remedial Response
Actions and Remedial Alternatives .............. 3-18
RI WORK PLAN .................................. 4-1
4.1
4.2
4.3
4.4
Project Planning .....
Community Relations ..
Subcontract Procurement
Work Plan Approach Field Activities ............ .
. 4-1
. 4-1
. 4-1
. 4-2
4.4.1
4.4.2
4.4.3
Site Preparation . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.4.4
Well Survey . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Geoprobe® Groundwater and Soil Investigation ........ 4-4
4.4:3.1 Phase I Geoprobe® .
4 .4. 3. 2 Phase II Geoprobes®
4.4.3.3 Phase III Geoprobes®
Surface Soil Investigation
. 4-5
. 4-9
4-12
4-13
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This document was prepared by Roy F. Weston, lnc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Section
4.5
4.6
4.7
4.4.5
4.4.6
4.4.7
4.4.8
4.4.9
4.4.10
4.4.11
Dratt RJ/FS Work Plan
Reasor Chemical Company Site
Section: Table of Contents
Revision: 0
Date: January 1997
TABLE OF CONTENTS (Continued)
Sediment Sampling ........................ 4-16
Surface Water Sampling . . . . . . . . . . . . . . . . . . . . 4-16
Residential and/or Commercial Well Sampling ....... 4-18
Permanent Monitor Wells . . . . . . . . . . . . . . . . . 4-18
Aquifer Testing . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Former Water Supply Wells 4-21
Investigation Derived Waste .................. 4-21
Sample Analysis/Validation . 4-22
. 4-22
. 4-22
4.5.1
4.5.2
Sample Analysis
Data Validation
Environmental Fate and Transfer Modeling Evaluation ........ 4-23
Baseline Risk Assessment Development . . . . . . . . . . . . . . . . . 4-23
4.7.1
4.7.2
Human Health Risk Assessment
4.7.1.1
4.7.1.2
4.7.1.3
4.7.1.4
4.7.1.5
4.7.1.6
4.7.1.7
Data Collection and Evaluation .......... .
Exposure Assessment and Documentation . . . . .
Toxicity Assessment and Documentation . . . . .
Risk Characterization . .
Carcinogenic Risk . . . . . . . . . . . . . . . . . . .
Noncarcinogenic Risk ...... .
Risk-Based Remedial Options . . .
Environmental/Ecological Risk Assessment
4. 7.2.1 Data Evaluation ...
4. 7.2.2 Exposure Assessment
4.7.2.3 Toxicity Assessment
4.7.2.4 Risk Characterization
4-24
4-25
4-26
4-27
4-28
4-29
4-29
4-30
4-30
4-31
4-31
4-33
4-34
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: Table of Contents
Revision: 0
Date: January 1997
TABLE OF CONTENTS (Continued)
Section Title Page
5
6
7
8
4.8 RI Report .
4. 9 References .
. 4-34
. 4-35
FEASIBILITY STUDY WORK PLAN ..................... 5-1
5.1 Development and Screening of Remedial Action Alternatives . . . 5-1
5.1.1 Identification and Screening of Remedial Technologies . 5-2
5 .1.2 Development of Alternatives ................... 5-2
5.1.3 Initial Screening of Alternatives ................. 5-3
5. I .4 Initial Screening Technical Memorandum ........... 5-5
5. 2 Task 5 -Detailed Evaluation of the Alternatives ............ 5-5
5.3 Feasibility Study Report .......................... 5-13
PROJECT MANAGEMENT . . . . . . . . . . . . . . . . . . . . ....... 6-1
6.1 Organization .. 6-1
6.1.1
6.1.2
6.1.3
6.1.4
6. 1.5
6.1.6
Work Assignment .......................... 6-1
Quality Assurance Coordinator . 6-I
Project Field Team Manager . . 6-3
Field Safety Coordinator . . 6-3
Laboratory Staffing . 6-3
EPA Personnel . 6-4
6.2 Project Schedule ...
6. 3 Deliverables Schedule
6.4 Project Budget ....
. 6-4
. 6-4
. 6-6
PROJECT MEETINGS .............................. 7-1
PROGRESS REPORTS . . . . . . . . . . . . . . . . . . .......... 8-1
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Figure
2-1
2-2
2-3
3-1
3-2
4-1
4-2
4-3
4-4
4-5
6-1
6-2
Dratt RI/FS Work Plan
Reasor Chemical Company Site
Section: Table of Contents
Revision: 0
Date: January 1997
TABLE OF CONTENTS (Continued)
LIST OF FIGURES
Site Location Map
Site Layout .....
Previous Sampling Locations for Law (1989) and NCDEHNR (1995)
Investigations ................................ .
Study Area Locations .
Conceptual Site Model . . . . . . . . . . . . . . . . . . . . . . . . . .
Phase I Geoprobe Investigation -Groundwater and Soil Sampling
Page
. 2-2
.2-3
. 2-7
. 3-2
. 3-4
Locations ................................. . . ... .4-6
Phase II Geoprobe Investigation -Groundwater and Soil Sampling
Locations .................................. .
Surface Soil Sampling Locations ......... .
Surface Water and Sediment Sampling Locations
Permanent Monitor Well Locations . . . . . . . . . . . . . . . . . . . . . . .
. 4-10
4-14
Project Organization
Project Schedule
................................
4-17
4-19
. 6-2
. 6-5 .................................
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. tt shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
2-1
2-2
3-1
3-2
5-1
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: Table of Contents
Revision: 0
Date: January 1997
TABLE OF CONTENTS (Continued)
LIST OF TABLES
Title Page
Summary of Analytical Results (Water Samples), NC DEHNR 1994
and Law Environmental 1989 . . . . . . . . . . . . . . . . . . . . . . . . ... 2-5
Summary of Analytical Results (Soil/Sediment), NC DEHNR 1994
and Law Environmental 1989 . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Summary of ARAR Sources Evaluated 3-15
Preliminary Applicable or Relevant and Appropriate Requirements . . . . 3-16
Detailed Evaluation Criteria ............................. 5-8
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This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
SECTION 1
INTRODUCTION
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 1
Revision: 0
Date: January 1997
Roy F. Weston, Inc., (WESTON@) is submitting this Remedial Investigation and Feasibility
Study Work Plan to the U.S. Environmental Protection Agency (EPA), Region IV, for the
Reasor Chemical Company site, located in Castle Hayne, New Hanover County, North Carolina.
The Work Plan was prepared under Work Assignment No. 77-4RI24 of U.S. EPA Contract No.
68-W9-0057 in accordance with the Statement of Work provided to WESTON dated July 11,
1996.
This Work Plan presents the objectives, overall scope and strategy, estimated budget and
schedule for conducting Remedial Investigation/Feasibility Study (RI/FS) activities including a
Baseline Risk Assessment for the Reasor Chemical Company site. The ultimate purpose of the
RI/FS program is to provide and evaluate information to support EPA's selection of a remedial
action alternative that will eliminate or sufficiently reduce the risk posed by the site to public
health and the environment.
The Reasor Chemical Company site RI/FS will be conducted in accordance with the
requirements of the Statement of Work (SOW), National Contingency Plan (NCP) as amended
by the Superfund Amendment and Reauthorization Act of 1986 (SARA), and "EPA Guidance
for Conducting Remedial Investigation and Feasibility Studies Under CERCLA, Interim Final"
(October 1988).
NOR/K: \ WP\ 04400\ 077\ WPMATOO 1. WP 1-1
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
SECTION 2
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 2
Revision: 0
Date: January 1997
SITE BACKGROUND AND PHYSICAL SETTING
2.1 SITE LOCATION
The Reasor Chemical Company site is located in Castle Hayne, North Carolina, near
Wilmington in the southeast portion of the state (Figure 2-1). The site consists of a vacant land
parcel located 0.5 miles southeast of the intersection of NC Route 132 and US Route 117 (NC
Route 133) (Figure 2-2). The geographic coordinates of the site are 34°20'36.5" N latitude and
77°53 '31" W longitude. To access the site from Raleigh, travel I-40 south, taking US 117 south
near Castle Hayne. Bear left at the NC 132 interchange, approximately 1.0 mile south of the
Northeast Cape Fear River. The entrance to the site is on the left (east) side of NC 132, 0.5
mile past the interchange.
2.2 SITE HISTORY
The Reasor Chemical Company site is the fonner location of a stump rendering facility. Reasor
Chemical operated the facility from 1959 to 1972, then sold the property to Martin Marietta
Corporation, which in tum sold the site to the Cameron Company in 1986. The site has been
inactive since 1972 and was dismantled at some time prior to 1986.
Reasor Chemical produced turpentine, pine, resin, pitch, tall oil, pine oil, camphor, pine tar,
and charcoal from pine tree stumps. The facility is believed to have used various solvents to
extract raw product from chipped stumps, distilling the extract into separate product fractions.
NOA/K:\ WP\ 04400\ 077\ WPMATOO 1 .WP 2-1
SITE LOCATION
SITE LOCATION MAP
REASOR CHEMICAL COMPANY
CASTLE HAYNE, NORTH CAROLINA
FIGURE 2-1
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SOURCE:
KUCERA NT, .&.ERl1'1... PHOTOS. REAi. PROPERTY MAP OF CAPE FEAR.
LAW EM....,f!Ct.11.E:NTAL INC. SITE MAPS
- - - - -
l!!!!!!I l!!!!!!!I !!!!!! ~ == ==
WO OED AREA
J
pROPERTI' UNE 0 300' 600'
SCALE FEET G:: i-----------R-E_A_S_O_R_C_H_E_M_I_C_A_L_C_O_M_P_A_N_Y __________ -,---------------,---,,R=□vc-:F~. ,....,~E""sr"'□""N,~]N'°C~. ------------!
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CASTLE HAYNE. NORTH CAROLINA
SITE LAYOUT
FJGURE 2-2
DRA\JN
WRS
CHECKED ATE APPROVED ATE
\/, □. NO.
04400-077
D\/G. NO.
04400-A2
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Draft Rl(FS Work Plan
Reasor Chemical Company Site
Section: 2
Revision: a
Date: January 1997
The solvents used in the extraction process were apparently stored on site in 55-gallon dmms,
remains of which are still visible in a surface dmm disposal area near the center of the property.
Five surface impoundments or ponds, which apparently were used in the manufacturing process,
are still present at the site. Spent stump chips were disposed on the ground surface in a "Sluice
Area" in the northeast comer of the site. Concrete remnants of three aboveground storage tank
arrays stand within the "Cradle Area" in the west-central portion of the site. Additionally,
remnants of several building foundations remain on site including the main processing area
located in the south central portion of the site. The remainder of the site presently consists of
dirt roads and woodland. Reportedly, a fire occurred on a portion of the property in April 1972,
damaging some of the on-site timber.
In 1989, Law Environmental, Inc., (Law) completed an environmental site assessment of the
property. Law collected soil, sediment, and groundwater samples. Benzene, toluene, and xylene
(BTX) compounds were detected in the Cradle Area soil sample, in three of the four pond
sediment samples, and in the groundwater sample. Acetone was detected in the Cradle, Sluice,
and dmm disposal soils, and in three of the pond sediment samples.
In 1995, a site inspection (SI) was conducted by the State of North Carolina -Superfund Section
of the Department of Environment, Health and Natural Resources (NCDEHNR). The data and
information obtained during the SI are summarized in Section 2.3 belo.w. Tables 2-1 and 2-2
summarize the data collected by Law and NCDEHNR. Figure 2-3 represents the locations of the
samples collected during these previous investigations. Locations of private and public water
supply wells sampled are not shown.
NOR/K: \ WP\ 04400\ 077\ WPMATOO 1 .WP 2-4
--------------!!!!I This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA.
Sample# Law Sample #8
On-Site
Table 2-1
Reasor Chemical Company
Summary of Analytical Results (Water Samples)
NC DEHNR 1994 and Law Enviornmental 1989
RC-001-PW RC-002-PW RC-003-PW PG 1 PG2
AP AC/Dickerson Davis Springer Prince George Ests.
RC-004-SW
P.G. Creek
!!!!! ==
RI/FS Work Plan
Reasor Chemical Company Site
Section: Section 2
Revision: 0
Date: January 1997
RC-005-SW
P.G. Creek Lowest
==
Location Monitorin~ Well Workplace Domestic Domestic Community (dwnstrm) (upstrm) Benchmark
Medium:
Date: 3/22/89 (1)
Volatile Organic Comeounds (µg/l)
Acetone ------
Benzene 3.6 ---
Carbon disulfide NA ---
Ethylbenzene NA ---
Toluene 11 ---
Xylenes (total) 18.9 ---
Semi-Volatile Organic Come_ounds {pgll)
Phenol 18 ---
Pesticides ( µ gll)
Toxaphene ------
---= Indicates parameter not detected, or below quantitation limit.
Tr= Indicates that trace concentration was reported.
NA= Indicates that sample was not analyzed for parameter.
Groundwater
11/2/94 (2)
---
---
---
---
---
---
---
---
Surface Water Value (4)
6/1-7 /94 (3) 11/2/94 (2)
---NA NA ------3,500
---------------1.2
---NA NA ------3,500
---------------700
--- ------------1,000
--------- ------10,000
---NA NA ------21,000
---------------0.032
(I) Samples collected by Law Environmental, Inc., during a Preliminary Environmental Liability Assessment of the neighboring Wilmington Auto Park Associates property.
(2) Samples collected during the NC Superfund Section's Site Inspection.
(3) Samples collected by the New Hanover County Engineering Department.
(4) EPA 1994 (MCL/MCLG or Cancer Risk Screening Concentration for groundwater (Ref. 23).
(5) See Appendix A, Ref. 8 for chemical laboratory analyses.
NOR/K\WP\04400\077\TABLES.XLS Table 2-1 1/13197
Sample#: No. 1 No. 3 No. 6 Nos. 2,-4,5,7•
Tnk.Crdl Sluict Drum Disp. 1'-illL Pond
Location Am Am Arn Concentration
Medium: Soil
Date: 3/22/89 (!)
Volatile Org_anic Comeounds ( JJ.K.!lsKl.
Acetone 108 125 133 5,600
Benzene 5 --909
Ethylbenzene NA NA NA NA
Methylene chloride 'NA NA NA NA
Methyl ethyl ketone NA NA NA NA
(2-butanone)
Toluene 18 --90,000
Xylenes (total) 93 --25,000
Semi-Volatile Organic Comeounds (Jlgf}sg)_
Anthracene NA NA NA NA
Benzo(k)fluornnthene NA NA NA NA
Benzo(a) pyrene NA NA NA NA
Chrysene NA NA NA NA
Fluoranthene NA NA NA NA
benzo(j,k)fluorene
2•methyl naphthalene NA NA NA NA
Phenanthrene NA NA NA NA
Phenol NA NA 5,120 175,000
P)Tene NA NA NA NA
Pesticides (11g!gg}_
Toxaphene I
-= Indicated parameter not detected, or below quantitation limit.
NA· Indicates that sample was not analyzed for parameter.
J = Indicates given concentration to be an estimated value.
K = Indicates that actual concentration is less than value given.
C = Indicates possible laboratory contamination.
B = Indicates compound was also detected in laboratory blank.
NOR/K.IWP\0-HOOI077\T"8LES.XLS ht:>lc 2-2
!!!!!!
Table 2-2
Reasor Chemical Company
Summary of Analytical Results (SoiVSediment)
NC DEHNR 1994 and Law Emiornmental 1989
RC-004-SD RC-005-SD RC-006-SS RC-007-SD RC-008-SS
P.G. Crttk P.G. Crttk Drum Dbp. On-s!tr l','WDitch Pond #1 Pond #2
(dwnstrm) (upstrrn) Arn (No.6) Ditch (bkgrnd)
Sediment Soil Sediment Soil
28 J
--
-
--
418
10
-
--
-
--
-
--
--
--
--
11/2/94 (2)
LAW NC
2 JC -3 JC --
------135
--- -3,288
----21 18 2918 -------
-------23,458
--- -117,113
--333 K - --
--1,650 K -------1,650 K - ---800 -----2,083 - --
---330 K ----
--667 ------------- --
--2,700 -----
* = Highest detected contaminant concentration in sediments from small
Ponds # I & 2, from Drained Pond, and from Settling Pond. Drained pond
not tested for phenol. Only Settling Pond was tested for toxaphene.
(I) Samples collected by Law Env. during a Preliminary Environmental Liability
Assessment of the neighboring Wilmington Auto Park Assc. property.
(2) Samples collected during the NC Superfund Section's Site Inspection.
(3) See Appendix A and Ref. 8 for chemical laboratory analyses.
!!!!I !!!!!! ==
I
RI/FS Work Plan
Reasor Chemical Company Site
Section: Section 2
Revision: O
Date: January 1997
RC-009-SD
Pond #J Pond #4 Srttling Pond
(U-Shaprd)
Sediment
3/22/89
3700 5600 117
41.7 909 -
NA NA NA
NA NA NA
NA NA NA
5,550 10,500 ---11,200 -
NA NA NA
NA NA NA
NA NA NA
NA NA NA
NA NA NA
NA NA NA
NA NA NA
NA NA NA
175,000 NA 903
NA NA -
NA I NA -
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CASTLE HAYNE, NORTH CAROLINA
PREVIOUS SAMPLING LOCATIONS FOR
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
2.3 SITE CHARACTERISTICS
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 2
Revision: 0
Date: January 1 !i)97
This section contains excerpts and references from the NCDEHNR Site Inspection Report dated
March 1995. During the Work Plan process, WESTON contacted the appropriate agencies and
resources relied upon for the site data. The following paragraphs were subsequently amended
to incorporate any new or different information.
2.3.1 Physiography and Surface Drainage
The Wilmington-Castle Hayne area lies within the Coastal Plain Physiographic Province (Ref.
8, p. 18). The geologic makeup of this province consists of a crystalline basement complex,
overlain by a wedge of layered sedimentary bedrock strata, including Black Creek, the Pee Dee,
and the Castle Hayne Formations. These sedimentary formations consist of sands, clays, and
limestones dating from the Cretaceous and Tertiary Periods. The sedimentary wedge, which
contains all the significant potable aquifers in the region, thickens toward the Atlantic coast,
measuring 1,100 feet in Wilmington (Ref. 5, pp. 8-13). Overlying the sedimentary bedrock
formations are unconsolidated sediments deposited during the Tertiary and Quaternary Periods
(Ref. 5, pp. 8, 15, 18).
Groundwater under unconfined conditions generally moves downward and laterally from
recharge areas in the interstream areas to topographically lower discharge points at hillside
springs and along streambeds, lakes, and the ocean (Ref. 8, pp. 6, 14, 24). Based on surface
topography and surface drainage, groundwater beneath the site is anticipated to flow in a general
south-southeasterly direction, toward Prince George Creek and the surrounding swamps (Ref. I).
· NOA/K:\WP\04400\077\WPMATOOl.WP 2-8
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 2
Revision: 0
Date: January 1997
Based on the site's topography (Ref. I), surface drainage at the site is toward the southeast, in
the direction of Prince George Creek. A system of drainage ditches runs parallel to the unpaved
perimeter and interior roads at the site. These ditches receive overflow from the settling pond,
the two impoundments south of the chip staging area, the sluice area, and other source areas at
the site (Ref. 3, pp. I, 3; Ref. 4, Fig. 2). One ditch flows across the center of the site, while
the other two skirt its south and east edges. The three intermittent channels begin to converge
southeast of the site, but do not intersect, terminating instead at three probable points of entry
(PPEs) spaced a few hundred feet apart along the north edge of wetland areas which border the
creek (Ref. 3, pp. 6, 10; Figs. 2-3).
Prince George Creek flows westward, passing within approximately 700 feet of the site, then
continuing toward the Northeast Cape Fear River. The Prince George Creek is reported to be
tidally influenced downstream of U.S. Route 117, approximately I mile downstream from the
site, but the creek does not experience flow reversal upstream of this location (Ref. 9). For 0.6
miles both upstream and downstream of the site, the creek meanders slowly through a cypress
swamp (Ref. I; Ref. 7, pp. 6, 9). Source areas at the site are not located within mapped flood
plains (Ref. 28).
Based on published drainage area measurements and mean annual runoff statistics, the mean
annual flow along the non-tidal segment of Prince George Creek is calculated to be 13.6 cubic
feet per second (cfs). The remainder of the creek has a calculated mean annual flow of 20.2 cfs
(Ref. 10). The water in the entire Creek is designated as Class "C Sw." Class C indicates
waters suitable for aquatic life propagation and survival, fishing, wildlife, secondary recreation,
and agriculture. Sw indicates swamp water, with low velocity and other natural characteristics
differing from adjacent streams (Ref. 11).
NOR/K: \ WP\ 04400\ 077\ WP MA TOO 1. WP 2-9
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This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 2
Revision: O
Date: January 1997
Prince George Creek enters the Northeast Cape Fear River 5.5 miles downstream from the most
downstream PPE. The mean annual discharge of the river downstream of Prince George Creek
is approximately 2,370 cfs (Ref. 10). The Northeast Cape Fear River, however, undergoes tidal
reversal (and salt water intrusion) along its main channel as far as 6.5 miles upstream of the
mouth of Prince George Creek (Ref. 13, pp. 19, 31-35, Plate I). Flow reversal also occurs
along the river's tributaries, such as Cowpen Branch, Long Creek, Morgan's Creek, and Turkey
Creek (Ref. 1; Ref. 9; Ref. 10). For this reason, the surface water pathway divides at the
mouth of Prince George Creek, continuing 9.5 miles downstream and 6.5 miles upstream along
the main Cape Fear River channel. Tidally influenced portions of its tributaries within 15 water
miles from the site are also within the pathway (Ref. 10; Figs. I, 3).
Upstream of Prince George Creek, the Northeast Cape Fear River is designated as Class "B
Sw," indicating swamp water, suitable for primary recreation and any other use specified for
Class C waters. Downstream of the creek, the river is designated Class "C Sw" (Ref. 11).
2.3.2 Regional Geology and Hydrogeology
Potable bedrock aquifers beneath the site include the Cretaceous Pee Dee Formation and the
overlying Eocene Castle Hayne Formation. The Pee Dee Formation consists of silt, clay, and
water-bearing sands with some impure limestone beds (Ref. 5, pp. 9, 13, 63). The Castle
Hayne Fonnation consists of shell, marl, sand, and limestone (Ref. 5, p. 13). Potable water
production from the Pee Dee aquifer is limited to the uppem1ost of 4 separate water-bearing
sandy layers within the formation. A confining clay layer which normally caps the sand unit
is absent beneath the site and in areas to the north and west (Ref. 5, pp. 9, 10, 14). The two
formations therefore behave as a single aquifer.
NOA/K: \ WP\ 04400\077\ WP MA TOO 1. WP 2-10
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This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Dratt RI/FS Work Plan
Reasor Chemical Company Site
Section: 2
Revision: 0
Date: January 1997
The City of Wilmington's drinking water source consists of a surface water intake located
outside of the study area on the Cape Fear River. No municipal water supply wells or
distribution lines are located within 4 miles of the site. The entire population within 4 miles of
the site is supplied water from domestic or community wells (Refs. 6-7). The 1994 community
well database indicates that 19 community wells supply approximately 4,238 residents within a
4-mile radius of the site (Ref. 7). The nearest community well, supplying 50 people, is located
in a mobile home park 1,500 to 2,500 feet southwest of the site. Another community well,
supplying 600 people, is located 3,000 feet southeast of the site in a housing subdivision (Ref.
7; Fig. 1).
2.3.3 Local Geology
Little information is available regarding the overburden geology of the site. In general,
however, the bedrock formations in this part of the county are overlain by unconsolidated sandy
beach, dune, and stream channel deposits, which vary considerably in thickness (Ref. 5, pp. I 8-
20). Because of the lack of confining clay layers, the Castle Hayne and Pee Dee aquifer is
anticipated to function as a water table aquifer at the site. Historical well records do not indicate
that the overburden sands were commonly used as a water-supply aquifer within a mile of the
site (Ref. 5, pp. 20, 62-63, 67, 71, Fig. 3).
Portions of the site are underlain by five different natural soil types. The eastern third of the
site is mapped as Wrightsboro fine sandy loam (0-2 % slope). The western third is mapped as
Leon sand. The south-central portion of the site is mapped as Seagate fine sand, and the north
central portion of the property is mapped as Lynchburg fine sandy loam and Onslow loamy fine
sand (Ref. 12, pp. 8-10, 12, 14, Sheet No. 3).
NOA/K:\ WP\ 04400\ 077\ WP MA TOO\ .WP 2-11
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 2
Revision: 0
Date: January 1997
Surficial soils at the site typically consist of 3 to 8 inches of dark gray to light gray fine sand I or fine sandy loam. At most on-site locations, the surface layer is underlain by layers of sand,
sandy clay loam or clay loam to a depth of approximately 65 inches. The subsurface soils are I expected to be sandier in the southern and western portions of the site, but sandy clay loam is
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more prevalent in the mapped subsoils corresponding to contaminant source locations (Ref. 4,
Fig. 2; Ref. 12, pp. 60-62, Plate 3).
2.3.4 Local Hydrogeology
Historical well records reveal that four production wells were once drilled at the site for Reasor
Chemical Company. At least one of the wells was never used. Records indicate that the wells
were cased to depths ranging from 14 to 34 feet below surface, which may approximate the
respective bedrock depths at each well location (Ref. 5, p. 63). The wells penetrated both the
Castle Hayne and Pee Dee Formations, to a maximum depth of 212 feet. Records indicate that
several other wells in this part of New Hanover County also penetrated both bedrock formations
(Ref. 5, pp. 62-63, 67, 71, Fig. 3). Only 1 production well, non-operational, was identified
during site visits (Ref. 6).
The NC Division of Environmental Management installed one monitoring well at the site and
four others on adjacent land to the east, in order to monitor groundwater elevations during
Martin Marietta's use of the adjacent property (Ref. 4, p. 5). The DEM monitoring well at the
site is reportedly cased to 22 feet, and screened in limestone from 22 to 48 feet deep (Ref. 30).
The Castle Hayne Formation's thickness at the site is generally estimated at slightly over 20 feet
(Ref. 5, p. 16).
NOR/K: \ WP\ 04400\ 077\ WPMATOO 1. WP 2-12
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Draft RIJFS Work Plan
Reasor Chemical Company Site
Section: 2
Revision: 0
Date: January 1997
2.4 REFERENCES
2.
3.
4.
5.
6.
7.
8.
9.
10.
United States Geological Survey 7.5 Minute Orthophotomap Quadrangles: Castle Hayne,
NC, 1970; Scott's Hill, NC, 1970; Rocky Point, NC, 1970; Mooretown, NC, 1970; 7-
1/2 Minute Topographic Quadrangle: Currie, NC, 1980; 1 :24,000.
Nicholson, Bruce, NC Superfund Section, Preliminary Assessment Reconnaissance,
Reasor Chemical, Castle Hayne, North Carolina, July 23, 1991.
Parker, Stuart F., NC Superfund Section, Reasor Chemical SI Reconnaissance and
Sampling Report, November 4, 1994; Attached Field Notes, August 2, 1994, November
2, 1994.
Law Environmental, Inc., Preliminary Environmental Liability Assessment, Prepared for
Wilmington Auto Park Associates, April 1989.
Bain, George L., Geology and Ground-water Resources of New Hanover County, North
Carolina, US Geological Survey Groundwater Bulletin Number 17, 1970.
Parker, Stuart F., NC Superfund Section, Memorandum to File: Municipal Drinking
Water Supplies within the Study Area, July 25, 1994.
Moore, Martha, NC DEHNR, Division of Environmental Health, Public Water Supply
Database, July 28, 1994.
Heath, R.C., US Geological Survey, Basic Elements of Groundwater Hydrology with
Reference to Conditions in North Carolina, Open-file Report 80-44, Raleigh, NC, 1980.
Nicholson, Bruce, NC Superfund Section, Memorandum to File: Telecons with Ed Beck,
Water Quality Section, and Rick Shriver, Groundwater Section, Wilmington Regional
Office, NC Division of Environmental Management, August 29, 1991.
Parker, Stuart F., NC Superfund Section, Memorandum to File: Surface Water Pathway
Definition, July 20, 1994.
NOA/K: \ WP\ 04400\ 077\ WPMAT00 1. WP 2-13
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
11.
12.
13.
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 2
Revision: 0
Date: January 1997
NC DEHNR Division of Environmental Management, Classifications and Water Quality
Standards Assigned to the Waters of the Cape Fear River Basin, !SA NCAC 2B .0311,
Current through Febmary 1, 1993.
US Department of Agriculture, Soil Conservation Service, Soil Survey of New Hanover
County, North Carolina, April 1977.
Giese, G. L.; Wilder, H. B.; Parker, G. G., Jr., Hydrology of Major Estuaries and
.Sounds of North Carolina, US Geological Survey Water Supply Paper 2221, 1985.
NQR/K:\ WP\04400\ 077\ WPMATOO 1 . WP 2-14
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This document was prepared by Roy F. Weston, lnc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
3.1 OVERVIEW
SECTION 3
CONCEPTUAL SITE MODEL
Draft Al/FS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: O
Date: January 1997
Section 3 presents the initial conceptual site model including an evaluation of the study areas,
preliminary identification of applicable or relevant and appropriate requirements (ARARs), and
scoping of remedial alternatives.
3.2 STUDY AREAS
This subsection presents an initial evaluation of the potential source areas identified on the
Reasor Chemical Site as a result of WESTON's review of the available background information.
In addition to discussing the physical features and locations of the source areas, the release
mechanisms, pathways, and potential impacts to the environment are also presented. Figure 3-1
depicts each of the study areas discussed in this section.
During previous site investigations, some level of contamination has been documented in soil
surface water and sediment at several of the potential contaminant source areas (e.g., surface
impoundments, sluice area, etc.). Additionally, obvious contamination has been observed in
some areas such as the drum disposal area and beneath the tank cradles. However, for other
areas on the site (e.g., former _laboratory, garage, and pipe shop), no samples have been
collected but the nature of activities at these areas indicates that chemicals were likely handled
and/or stored, creating a reasonable potential for release.
NOR/K:\ WP\04400\077\ WPMA T001.WP 3-1
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REASOR CHEMICAL COMPANY
CASTLE HAYNE, NORTH CAROLINA
STUDY AREA LOCATIONS
FIGURE 3-1
SLUICE AREA
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FEET
APPROVED DATE
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04400-077
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04400-08
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. lt shalt not be released or disclosed, in whole or in part,
without the express written permission of EPA
Draft RlfFS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: O
Date: January 1997
The primary suspected release mechanisms identified are potential spillage or other release of
chemicals either directly onto the ground surface and/or through preferential pathways such as
cracks or openings in building floors or concrete pads; storage of waste in ponds/lagoons; on-site
plumbing; septic tanks; or wells. Such releases could affect surface and subsurface soils, surface
water, sediment, and groundwater. Given the sandy nature of surface soils and shallow (i.e.,
approximately 5 feet) water table, it is very likely that on-site releases would impact surficial
groundwater.
During the site visit no obvious odors were noted around the potential source areas and review
of background information indicates that there is no history of complaints or concerns related
to on-site air quality. Given the nature of the chemicals used on-site, the humid climate in which
the site is located, and the absence of any obvious odors on-site, WESTON does not believe that
airborne contamination is a significant area of concern for the Reasor Chemical Site.
Figure 3-2 depicts a graphical representation of the conceptual site model based on the
background inforn1ation collected to date.
3.2.1 Former Wood Chip Processing Area
The wood chip processing area is located in the southeastern portion of the site and consisted
of a process line trending southwest to northeast (see Figure 3-1). This area currently consists
of a long concrete pad with rem!Jants of buildings at each end. Based on review of historical
information, the extraction process began with the grinding of pine stumps into chips at the
Millhouse and subsequent storage of the ground stumps in the Chip Bin. The chips were taken
to the Extractor Building and solvents were used to remove the resin from the chips. The resin
NOR /K:\ WP\ 04400\ 077\ WPMATOO 1. WP 3-3
- -
PRIMARY
SOURCE
DRUMS
PROCESS
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CONCEPTUAL SITE MODEL
REASOR CHEMICAL
CASTLE HAYNE, NORTH CAROLINA
FIGURE 3-2
DERMAL
CONTACT I O I O 11 " I 0
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Draft Rl(FS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: O
Date: January 1997
material was then further processed at other locations in the plant. The spent wood chips were
stored in the Fuel Bin and used to fire the boilers located at the northeast end of the process line.
The most likely areas of potential contamination is the fom1er Extractor Building location and
the former storage tank area. However, given the length of time since operations ended and the
lack of detailed information on house keeping practices, the potential for residual solvents and/or
pine tar to be spread along the whole area cannot be ruled out. Thus, the wood chip processing
area will be investigated as a single source area.
Releases could impact surface soil, subsurface soil, and groundwater. Surface water and
sediment could also be affected by runoff from this area.
3.2.2 Former Rosin Warehouse
Based on historical information, the Rosin Warehouse was located in the northwestern portion
of the site immediately south of Tank Cradle Area 1 (see Figure 3-1). This one-story, steel
frame and metal sided structure was approximately 40 ft by 40 ft, and was presumably used to
store extracted rosin.
Environmental concerns in this area are related to the potential release of chemicals from past
storage activities at this former building site. Potential release of solvents/pine products could
have impacted soil and groundwater.
NOA/I<:\ WP\ 04400\ 077\ WPMATOO 1 .WP 3-5
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
3.2.3 North Tank Cradle Area
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: 0
Date: January 1997
The North Tank Cradle Area is located in the northwestern portion of the site. This area
currently consists of a concrete pad remnants of several tank cradles. Tar is visible on the
concrete pad beneath the former tank cradles. Analytical results from a soil sample collected in
this area by Law indicated the presence of acetone, benzene, toluene, and xylene. The subject
sample was analyzed for volatile organic compounds only.
The tar coating on the concrete indicates releases have occurred in this area. Surface and
subsurface soil as well as groundwater may have been impacted from releases associated with
the tanks forn1erly located in this area.
3.2.4 Work Tank Area
The fonner Work Tank area is located in the central portion of the site immediately south of the
Drained Pond and west of the former still building (see Figure 3-1). This area currently consists
of several tank cradles situated on a concrete pad. The tanks were presumably associated with
the adjacent distillation process. To date no samples have been collected in this area.
Surface and subsurface soil, surface water/sediment as well as groundwater may have been
impacted from releases associated with the handling and storage of chemicals in the Work Tank
Area. Releases pathways include _direct spillage onto the ground, seepage through cracks in the
concrete pad situated beneath the tanks, and/or through piping associated with the work tanks.
NOA/K:\ WP\ 04400\ 077\ WPMAT001.WP 3-6
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
3.2.5 South Tank Cradle Area
Dratt RI/FS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: O
Date: January 1997
The South Tank Cradle Area is located in the central portion of the site immediately northeast
of the chip processing area (see Figure 3-1). This area currently consists of several tank cradles
situated on a concrete pad. To date no samples have been collected in this area.
3.2.6 Former Laboratory Area
The laboratory building was located in the west central portion of the site south of the fonner
Rosin Warehouse (see Figure 3-1). The laboratory building was reportedly a one story wood
frame structure with both plumbing and electricity.
Potential releases to soils and groundwater related to use/storage of chemicals associated with
the laboratory is the primary concern in this area. Potential release pathways include through
cracks in the floor, from the building plumbing and septic system or direct discharge onto the
ground.
3.2.7 Former Garage Area
The former garage area is located in the southwestern portion of the site. This high one story
steel framed and metal clad structure was approximately 40 ft x 50 ft in size and had roll curtain
steel doors. It reportedly had electricity but no plumbing. The garage was presumably used to
store and maintain facility vehicles. Review of appraisal records for the site indicates that there
were several vehicles including a station wagon, two pickup trucks, four dump trncks, three
cranes, a bulldozer, tractor, fire truck, and a front end loader.
NOR/K:\ WP\ 04400\ 077\ WPMAT00 1. WP 3-7
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: 0
Date: January 1997
Potential releases to soil and groundwater from petroleum associated with operation and
maintenance of vehicles associated with the fom1er Reasor Chemical site is the primary concern
in this area.
3.2.8 Former Still Area
The former still area is located in the central portion of the site immediately south of the
Drained Pond. It presumably housed the plant distillation unit. The subject building was
reportedly a two story, steel framed and metal clad structure approximately 16 ft by 25 ft in size
and had electricity but no heating, air conditioning nor plumbing.
The primary potential release pathway for the Former Still Area is seepage through cracks in
the building floor.
3.2.9 Former Transformer Area
Historical information indicates that transformers were previously located northwest of the chip
processing area. Remnants of the concrete pad that contained the transformers is currently
present on-site. During the operational period of the Reasor Chemical facility (1959-1972),
dielectric fluids used in transfonners sometimes contained polychlorinated biphenyls (PCBs).
Potential release of PCB containing fluids into the surrounding soil a.nd groundwater from
operation and maintenance of the_ transformers is the primary concern in this area.
NOR/ K: \ WP\ 04400\ 077\ WPMATOO 1. WP 3-8
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
3.2.10 U-Shaped Settling Pond
Dratt RlfFS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: O
Date: January 1997
AU-shaped Pond is located in the northeastern portion of the facility. Reportedly this pond was
used as a reservoir for water storage. However, analytical results from a sample collected by
Law in 1989 in the southeastern portion of the pond indicated the presence of acetone and phenol
in sediment.
The primary concern in this area is release of chemicals into the surface water, sediment, and
groundwater as the result of past discharges from plant operations into this pond.
3.2.11 South Ponds
South Pond No. 1 covers an area of approximately 0.2 acres. Two sediment samples collected
from this pond also revealed the presence of benzene, toluene, xylene, acetone, and phenol.
The South Ponds are located in the southeastern portion of the site. South Pond No. 2 (i.e., the
smaller of the two ponds) covers an area of approximately 0.1 acres. Analytical results from a
sediment sample collected by NC DEHNR during the SI indicated the presence of benzene,
ethylbenzene, toluene, and xylene.
Environmental concerns related to the South Ponds are from potential release to surface
water/sediment and groundwater from chemicals previously discharged into the pond from past
plant operations.
NOR/K: \ WP\ 04400\ 077\ WPMATOO 1 .WP 3-9
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This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
3.2.12 Pond No. 3
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: 0
Date: January 1997
Pond No. 3 is located in the central portion of the site. This pond was apparently used as a
waste lagoon in conjunction with Pond. No. 4. Sediment samples collected by Law revealed the
presence of benzene, toluene, xylene, acetone, and phenol.
3.2.13 Pond No. 4
Pond No. 4 is located in the north central portion of the site and consists a square shaped
depression covering an area of approximately 0.1 acre. The pond bottom appeared to be 2-4 feet
below the surrounding land surface and staining of the soil was evident. This forn1er pond was
apparently previously used as a waste lagoon. Results from a soil sample collected from this
area by Law indicated the presence of acetone, benzene, toluene, and xylene. Environmental
concerns related to Pond No. 4 are from potential release to soil and groundwater from
chemicals previously discharged into the pond from past plant operations.
3.2.14 Drum Disposal Area
The Drum Disposal Area is located on the east side of an on-site drainage ditch in the north
central portion of the site (Figure 3-1). This area consists of approximately 20-30 badly rusted,
overturned 55-gallon drums scattered along a 50-75 feet stretch of drainage ditch. Some of the
drums contain a dark brown resinous material believed to be associated with past plant
operations. No evidence of surface contamination was observed during the site visit; however,
the ground was covered with pine needles and other vegetation, preventing complete observation
NOA/K;\ WP\04400\077\ WPMAT001.WP 3-10
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This document was prepared by Roy F. Weston, 1nc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: 0
Date: January 1997
of surface soils. A soil sample from this area indicated the presence of acetone, phenol, and
PAHs.
Leakage and leachate from the overturned and rusted drums in this area are the primary release
mechanism. The leakage could impact surface soil, subsurface soil and groundwater. Given the
drums position adjacent to a drainage ditch, leakage could also impact surface water and
sediment.
3.2.15 Former Refinery Building
The fom1er refinery building was located in the central portion of the site immediately northwest
of the fonner extractor (see Figure 3-1). This building occupied an area of approximately 4,600
square feet and had a concrete floor. Appraisal records indicate the presence of up to nine steel
tanks associated with this building. Presumably the pine tar compounds were conveyed to this
building for refinement following the extraction process.
Release of chemicals through cracks in the floor into the underlying soil and groundwater is the
primary concern related to the Former Refinery Building.
3.2.16 Above-Ground Piping System
During the EPA-WESTON site visit, remnants of an above-ground piping system was observed.
Reportedly this system was used to transport pine products across the site during past operations.
Leakage from past operation of the above-ground piping system could impact surface and
subsurface soils as well as groundwater and surface water/sediment.
NOA/ K: \ WP\ 04400\ 077\ WPMATOO t. WP 3-11
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This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
3.2.17 Former Water Supply Wells
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: O
Date: January 1997
Historical infomrntion indicates up to 4 wells were drilled at the Reasor Chemical Site and at
least one of the wells was never used. Records indicate that wells were cased from 14-34 feet
below land surface, possibly indicating the depth to bedrock. To date, only one of these wells
has been found and it is reportedly located near the Work Tank Area. The wells apparently
penetrated the Castle Hayne and Pee Dee Formations to a maximum depth of 212 feet.
Additionally, the NC Division of Environmental Management installed a monitoring well in the
southeast comer of the site to monitor groundwater elevations because of Martin Marietta's
operation of a nearby quarry. The subject well was reportedly screened in limestone fom1 22-48
feet. During The NC DEHNR site investigation and WESTON' s site visit, this well could not
be located and may have been dismantled or damaged.
Degradation of or damage to the casings and/or covers of these wells could provide a
preferential pathway into the groundwater, resulting in a release of suspected site contaminants
into the aquifer.
3.2.18 Sluice Area
The Sluice Area is located in the northeastern portion of the site and consists of wood chips
scattered on the ground. In some areas the wood chips are several inches deep. The Sluice Area
covers an area of approximately 2 acres. A soil sample collected from this area by Law in 1989
and analyzed for acetone and benzene contained an acetone concentration of 125 µ,g/L. The I sample was not analyzed for other VOC constituents, PAHs, pesticides, or metals.
I NOR/K; \ WP\ 04400\ 077\ WPMAT001. WP 3-12
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This document was prepared by Roy F. Weston, Inc., .expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Dratt RI/FS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: 0
Date: January 1997
The primary concern in this area is leaching of any residual chemicals in the wood chips (i.e.
solvents and pine tar) into the soil and groundwater. Additionally nmoff from this area could
also impact surface water and sediment.
3.2.19 Scrap Copper Area
An area containing charred scrap wire insulation and conduit is located in the west-central
portion of the site. Apparently electrical wiring from the site was burned in this area to recover
the copper from the insulation. Burning of the material may have resulted in release of copper
and/or chemicals associated with the insulation onto the surface soil. These materials (if present)
could migrate to subsurface soils and groundwater.
3.2.20 Building Materials
Asbestos materials were reportedly used in the construction of some of the site buildings.
Although no evidence of these materials is present on the surface, WESTON will note any
suspected materials found during the R1 soil sampling activities.
3.3 INITIAL IDENTIFICATION OF APPLICABLE OR RELEVANT
AND APPROPRIATE REQUIREMENTS
Superfund remedial actions under SARA must attain the applicable or relevant and appropriate
requirements (ARARs) of federal, state, or local environmental statutes, whichever are most
stringent. Federal standards could include RCRA, Clean Air Act, Safe Drinking Water Act,
Clean Water Act, or the Toxic Substances Control Act. State of North Carolina standards could
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Dratt RlfFS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: 0
Date: January 1997
include any promulgated by the State Environment Management Commission. Screening of the
remedial action alternatives will require an evaluation of each alternative with regard to its
ability to comply with the ARARs. The ARARs are generally based on acceptable levels of
contamination for the preservation of the environment and the public health and welfare. ARARs
may also include consideration of technical and economic feasibility.
ARARs can be categorized as: (I) chemical-specific, (2) location-specific, or (3) action-specific
requirements. Chemical-specific requirements are used to define acceptable exposure levels and
are used to define remedial action objectives. Location-specific requirements set restrictions on
activities within specific locations, such as floodplains or wetlands. Action-specific requirements
set restrictions for particular treatment and disposal activities pertaining to hazardous wastes.
ARARs will be considered throughout the RI/FS process. As the Rl/FS progresses, each ARAR
will be defined based on the accumulated site data.
Preliminary sources of ARARs have been identified for the Reasor site and are included in Table
3-1. A preliminary list of chemical-specific ARARs for the previously identified contaminants
are presented in Table 3-2.
3.4 SCOPING OF REMEDIAL ALTERNATIVES
Based on the existing site info_rmation collected during the State of North Carolina Site
Inspection and a conceptual understanding of the site conditions, potential remedial action
alternatives have been identified for each contaminated medium. This preliminary list of
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
FEDERAL
STATE
Table 3-1
Summary of ARAR Sources Evaluated
Resource Conservation and Recovery Act (RCRA)
Clean Water Act (CW A)
Safe Drinking Water Act (SDW A)
Clean Air Act (CAA)
Occupational Safety and Health Act (OSHA)
Hazardous Materials Transportation Act
Protection of Wetlands (Executive Order I 1990)
Floodplain Management (Executive Order 1 1988)
Draft RljFS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: O
Date: January 1997
Regulations Protecting Landmarks, Historical, and Archeological Sites
Endangered Species Act
Fish and Wildlife Coordination Act
EPA OSWER Soil Screening levels
North Carolina Hazardous Waste Management Rules and
Solid Waste Management Law
North Carolina Water and Air Resources Act
North Carolina Water Pollution Control Regulations
North Carolina Drinking Water Act
North Carolina Drinking Water and Groundwater Standards
North Carolina Surface Water Quality Standards
North Carolina Air Pollution Control Regulations
NOA/ K:\ WP\ 04400\ 077\ WP MA TOO 1. WP 3-15 12/98
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part, without the express written permission of EPA.
Table 3-2
Dratt Rl(FS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: 0
Date: January 1997
Preliminary Applicable or Relevant and Appropriate Requirements
Surface Water
Drinking Aquatic Fish/Water
Compound Groundwater' Water' Life Ingestion
Acetone 700 NIA NIA NIA
Toluene 1,000 1,000 11.0' 6,800'
Xylenes 530 10,000 NIA NIA
Phenol 300 NIA NIA 21,000'
Toxaphene 0.031 1,000 0.0002' 0.00073'
Benzene 1.0 5 NIA 1.2'
1 All units are micrograms per liter (µg/L).
2 State of North Carolina Groundwater Quality Standard; 15NCAC2L.0202.
3 Drinking Water Regulations and Health Advisories; US EPA Office of Water, November 1994.
'State of North Carolina Surface Water Standards; 15NCAC2B.0208-.021 I.
'Water Quality Standards; Federal Register Vol. 57.12/22/92, U.S. Environmental Protection Agency.
'Draft Interim Soil Screening Level Guidance (Oswer, August 19, 1993).
7 N/ A -no criteria or standard available.
NOA/K:\ WP\ 04400\ 077\ WP MA TOO 1 .WP 3-16
Human Health/
Fish Soils'
Consumption (mg/kg)
NIA NIA
NIA 16,000.0
NIA 160,000.0
4,600, 0005 NIA
0.00075' NIA
71.44 22.0
12/96
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Dratt RI/FS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: O
Date: January 1997
alternatives is a general classification -of potential actions developed to help ensure that the
necessary data is collected during the RI to adequately analyze each alternative.
3.4.1 Identification of Preliminary Remedial Response Objectives
Based on the study areas described in Subsection 3.2, the following media and related remedial
action objectives have been developed:
On-Site Soil -Surficial soils have been found to contain benzene, toluene, xylene, acetone, and
phenol. The objective related to protection of human health would be to prevent ingestion
and/or direct contact with soil having 104 to 10·• excess cancer risks on above reference doses.
The remedial action objective for environmental protection would involve prevention of
contaminant migration into the groundwater.
Surface Water and Sediments -Sediments and surface water from the on-site surface
impoundments, as well as sediment from the wetland areas leading to Prince Georges Creek,
also revealed low levels of volatile organic compounds. The protection of human health to
prevent ingestion and/or direct contact is the primary objective. The remedial action objective
for the protection of the environment would involve protection of endangered animal or plant
species and protection of fisheries downstream of the site.
Groundwater -To date, benzene, toluene, xylene, and phenol have been detected in the
groundwater in on-site wells adjacent to the surface water impoundments. No off-site organic
contaminants have been detected in the closest public drinking wells. The remedial action
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This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Dratt RI/FS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: 0
Date: January 1997
objective will be to confinn the limits of the contamination plume and restore the aquifer to
acceptable cleanup levels.
Solid Waste Materials -Solidified pine tar materials are present in drums and on the surface
adjacent to the tank cradle areas. While no chemical analysis has been performed on the
material itself, soil samples collected nearby reveal the presence of BTX, acetone, and phenol.
The remedial action objectives for this solid waste material are the same as for on-site soils -
prevent ingestion and direct contact with wastes having 104 to 10-6 excess cancer risks and
prevent migration of contaminants into groundwater.
3.4.2 Identification of Preliminary Remedial Response Actions
and Remedial Alternatives
A preliminary evaluation of potential response actions and remedial alternatives have been
conducted. The following lists are for each medium includes alternatives that are relevant to the
site conditions and are based on the amount of information known to this point. This general
list will be refined as data from the RI is made available.
Soil
•
•
•
No action/institutional controls such as fencing and deed restrictions .
Containment actions -Capping with an impermeable soil or synthetic layer .
Surface controls to divert surface water.
Excavation and off-site disposal at a permitted facility .
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This document was prepared by Roy F. Weston, Inc,, expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
•
Sediments
•
•
•
Groundwater
•
•
•
•
Dratt RI/FS Work Plan
Reasor Chemical Company Site
Section: 3
Revision: O
Date: January 1997
In-situ treatment using a soil vapor extraction technology to remove VOCs from
the unsaturated soils.
No action -Natural degradation within wetland areas .
Excavation and off-site disposal at a permitted facility .
Excavation and on-site biological treatment.
No action/institutional controls -Alternative residential water supply and
monitoring.
Containment action -Capping with an impermeable barrier to reduce stom1water
infiltration.
Collection and treatment on-site followed by reinjection of surface discharge .
In-situ treatment using an air sparging technology in conjunction with soil vapor
extraction.
Solid Waste Materials
•
•
No action/institutional controls including fencing .
Drums and solids removal with off-site disposal.
NOA/K: \ WP\ 04400\ 077\ WPMAT00 1. WP 3-19
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
4.1 PROJECT PLANNING
SECTION 4
RI WORK PLAN
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: O
Date; January 1997
This section of the RI/FS Work Plan includes a comprehensive description of the work to be
perfom1ed that will fully characterize the site conditions. A complete description of the planned
methodologies to investigate each media is discussed along with the rationale for the selection
of each methodology. This section also includes the approach for conducting a Baseline Risk
Assessment based on data collected during the RI.
4.2 COMMUNITY RELATIONS
The community relations program for the Reasor Site will be carried out by EPA. However,
WESTON will be available to assist EPA as needed. WESTON's primary area of community
relations support will be attendance at public meetings to assist EPA in presenting technical
information.
4.3 SUBCONTRACT PROCUREMENT
To meet the RI/FS requirements for the Reasor site, several subcontractors will be used as
appropriate to conduct various field services. These services include a direct-push technology
(DPT) geologic and groundwater investigation, drilling and monitoring well installation, and
surveying of the installed monitoring wells. The subcontractor services will include:
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
•
•
•
•
Dratt RI/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: O
Date: January 1997
Providing equipment and manpower for soil and groundwater sampling using
DPT (Geoprobe®);
Providing equipment, manpower, and materials for drilling, soil sampling, and
monitor well installation;
Analytical characterization of investigative derived wastes, geochemical and
geotechnical testing;
Land surveying for vertical and horizontal coordinates of monitoring wells and
other physical features.
Request-for-quotation packages will be prepared and issued to at least three finns qualified to
provide each required service. Copies of the packages will be provided to EPA. Quotations and
qualifications of the firms will be reviewed, subcontractors will be selected, and subcontracts
will be executed. Copies of the subcontracts will be provided to EPA.
4.4 WORK PLAN FIELD ACTMTIES
The following paragraphs discuss the activities to be conducted during the field investigation at
the former Reasor Chemical site (the site) in Castle Hayne, North Carolina. Activities to be
conducted by WESTON at the site include groundwater, soil, surface water, sediment, and
residential and/or commercial well sampling. WESTON will also attempt to sample any
remaining drums or tanks for characterization purposes prior to disposal. Surveying of the
former site buildings and of the sampling locations will be directed by WESTON.
All field activities will be conducted in accordance with the methodology established by the
Environmental Services Division of EPA as described in the Environmental Investigations
NOA/K:\ WP\ 04400\ 077\ WPMATOO 1. WP 4-2 12/98
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Dratt Rl(FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: 0
Date: January 1997
Standard Operating Procedures and Quality Assurance Manual of May 1996. Specific data
collection procedures are described in the Field Sampling Analysis Plan (FSAP) and the Quality
Assurance Project Plan (QAPP).
4.4.1 Site Preparation
During the initial site visit with EPA, WESTON found that severaJ'large trees had fallen across
the road and that certain portions of the road are in disrepair. Prior to investigative efforts at the
Reasor Chemical site, WESTON will make arrangements for the roads leading into and around
the site to be cleared of debris to facilitate site access. During this time, WESTON will also
arrange to have a mobile office established along the site access road and supplied with
electricity and telephone service. Portable septic facilities and solid waste disposal service will
also be arranged.
WESTON will also procure and direct North Carolina registered surveyors to reestablish the
locations of former Reasor Chemical buildings, and other significant site features (e.g., drums,
ponds, tanks, etc.) to allow for preparation of an accurate site map and assist in accurate
documentation of sample locations. The locations of former site facilities (i.e., buildings) will
be based on aerial photographs and other available records. It may be necessary to clear small
trees or brush from some locations to facilitate surveying and sampling activities.
During the site preparation phase, WESTON will attempt to establish the locations of the
aboveground product piping system previously located on-site and locations of the observed
remnants of the system will be documented by the surveyors. WESTON will also attempt to
locate the reported four production wells used at the site during previous operational activities.
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This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: O
Date: January 1997
The wells will be located using maps of the Reasor site from the period of active operations as
well as electromagnetic surveying methods. The electromagnetic surveying method will also be
used to determine if drums or other items may be buried underground at the drum disposal area
and other investigation areas.
4.4.2 Well Survey
As part of a review the results of the residential well survey completed by the State of North
Carolina during the Site Investigation (SI) of 1994, WESTON will verify the location of each
residential well described in the SI report and will examine a one-half mile perimeter
surrounding the site for any additional or new residential or commercial wells. If new wells are
located, WESTON will try to ascertain construction specifications from the owner of the well
and will locate the well on maps of the area surrounding the site. The well verification survey
will be conducted on a drive-by basis.
4.4.3 Geoprobe® Groundwater and Soil Investigation
Review of historical information from the Reasor Site indicates a strong potential for
groundwater and subsurface contamination beneath the site. To determine if groundwater
contamination exists beneath the site, WESTON has developed a three phased approach. Phase
I will include installation of 14 direct push technology or Geoprobe® borings at various locations
on the site. The purpose of these _borings is to establish the groundwater flow direction beneath
the site and determine general groundwater quality on and around the site. The Phase I
groundwater sampling will be part of a larger field effort to canvass the site and collect samples I and data from several matrices, including soil, surface water, and sediment.
I NOR/K: \ WP\ 04400\ 077\ WPMAT001 .WP 4-4 12/96
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: 0
Date: January 1997
Phase II will include the installation of up to 25 additional Geoprobe® borings. The pmpose of
these borings is to more clearly define the source and extent of groundwater contamination
beneath the site based upon the groundwater flow direction, general groundwater quality, and
significant source areas established by the Phase I data. Phase III will include the installation of
up to 12 permanent monitor wells. The purpose of these wells is to complete definition of the
groundwater contaminant plume (if present) based on the Geoprobe® investigation. Six
Geoprobe® borings are also proposed for installation if a groundwater plume is detected and the
plume is suspected to have migrated off-site.
4.4.3.1 Phase I Geoprobe®
A detailed description and justification of the Phase I Geoprobe® borings is provided below.
Phase I groundwater sampling will include collection of 28 groundwater samples from 14
Geoprobe® boring locations (Figure 4-1). Two groundwater samples will be collected from each
of the Geoprobe® borings. The first sample will be collected from the top of the water table,
which is expected to be within the local regolith aquifer. The second will be collected from the
top of the Castle Hayne Limestone formation (estimated depth 28 ft bis). The location and
justification of the 14 Geoprobe® points are provided in the following table.
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1------------------------------~
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KUC[RA INT. AERIAL PHOTOS, REAL PROPERTY t.C OF CAPE FEAR.
LAW OMRONt.lDHAL INC. SITE I.CAPS
NORlll
TANK CRADLE
AAtA
LABORATORY
PROPER1Y LINE
PLT. SC.
FILE NO.
WOODED AREA
A?f'ROXMA TE M:n..AOO UUITS
REASOR CHEMICAL COMPANY
CASTLE HAYNE, NORTH CAROLINA
PHASE I GEOPROBE INVESTIGATION -
GROUNDWATER AND SOIL SAMPLING LOCATIONS
FIGURE 4-1
DRA\JN
SLUICE AREA
WRS
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l8l GEOPROBE BORING LOCATION-
GROUNDWATER AND SOIL SAMPLING
LOCATION \ ~ ,
\
200· 400'
SCALE FEET
DES. ENG. DATE
APPROVED DATE
V. 0. NO,
04400-077
Dw'G. NO,
04400-03
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This document was prepared by Roy F, Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Number of Boring Location
Borings
I Immediately south of former
garage location
I Immediately east of junction of
site access road and site perimeter
road
I Central portion of southern end of
perimeter road
I Eastern poition of southern end of
perimeter road
I Adjacent to fonner transfonner
bank
I Central portion of eastern end of
perimeter road
I Within former Sluice Area
I Central portion of northern end of
perimeter road
I Western portion of northern end
of perimeter road
I Central portion of western end of
perimeter road
I Adjacent lo former tank cradle
area at the northwestern edge of
the site
I South of former process extractor
location
I Within former scrap electrical
wire burning area
I Within former drum disposal area
NOR/K: \ WP\ 04400\ 077\ WPMAT00 1 . WP
Draft Rl/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: 0
Date: January 1997
Purpose of Boring
Collect sample of soil and groundwater near former garage
location to determine if potential contamination exists
Determine if contaminant plume exists in this area and
direction of groundwater flow across site
Determine if contaminant plume exists in this area and
direction of groundwater flow across site
Determine if contaminant plume exists in this area and
direction of groundwater flow across site
Collect soil and groundwater samples to determine if
potential contamination exists; aid determination of
groundwater flow across site
Determine if contaminant plume exists in this area and
direction of groundwater flow across site
Determine if site activities have contributed contaminants
to soil and/or groundwater in this area
Determine if contaminant plume exists in this area and
direction of groundwater flow across site
Determine if contaminant plume exists in this area and
direction of groundwater flow across site
Determine if contaminant plume exists in this area and
direction of groundwater flow across site
Collect soil and groundwater samples to determine if
potential contamination exists from past activities and
detennine direction of groundwater flow across site
Collect soil and groundwater samples lo determine if
potential contamination exists from past activities and
determine direction of groundwater flow across site
Collect soil and groundwater samples to determine if
potential contamination exists from past activities and
determine direction of groundwater flow across site
Collect soil and groundwater samples to determine if
potential contamination exists from past activities and
determine direction of groundwater flow across site
4-7 12/98
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This document was prepared by Roy F. Weston, lnc., expressly for E=PA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: 0
Date: January 1997
Groundwater samples collected during Phase I activities will be analyzed for several analytes.
These include VOCs, semivolatile organic compounds (SVOCs), metals (RCRA list only), and
pesticides/PCBs. A total of eight groundwater samples (four from the top of the water table and
four from the top of the Castle Hayne) will be analyzed for the entire suite of analytes listed
above. The eight samples include two upgradient samples, two downgradient samples, and four I samples from within the central portion of the site. All other groundwater samples will be
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analyzed for VOCs and SVOCs only. Groundwater samples collected from the former scrap
electric wire burning area, the former pipe shop location, and the former garage location will
also be analyzed for metals content.
Soil samples collected during the Phase I effort will be analyzed for the same constituents as that
of groundwater, and of these samples, four will be analyzed for the entire suite of analytes. The
four full scan samples will be collected from the following locations: one upgradient location,
one downgradient location, and two locations within the central portion of the site. All other
samples will be analyzed for VOC and SVOC content only with the exception of samples
collected from the former scrap electric wire burning area, the former pipe shop location, and
the fonner garage location. These samples will also be analyzed for metals content.
All of the Phase I Geoprobe® locations will be used to detennine the direction of groundwater
flow across the site. This will be accomplished through the installation of temporary, one and
one-half inch PVC screen and casing into the Geoproboo boreholes. Once installed, the elevation
and location of the top of the PVC casing will be measured by a registered surveyor. These data
will be used to determine the elevation of the groundwater table and, subsequently, the direction
of groundwater flow across the site. Groundwater samples will be collected from each location
NOA/K:\ WP\ 04400\ 077\ WPMATOO 1. WP 4-8 12/96
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: O
Date: January 1997
after the surveying has been completed. After the groundwater samples have been collected, the
PVC will be removed so that the boring can be continued to the top of the Castle Hayne.
During the installation of each Geoprobe® boring, soil samples for geologic and hydrogeologic
characterization will be collected continuously from the surface to boring termination depth. The
tennination depth will be determined by the on site WESTON geoscientist based upon data
collected during the investigation. One soil sample from the unsaturated zone of each boring wilJ
be collected for laboratory analysis. To determine which sample will be submitted for analysis,
all unsaturated soil samples will be scanned with an Organic Vapor Analyzer (OVA) to
determine if volatile organic compounds (VOC) are present. In addition to the scanning, each
sample will be reviewed by the on-site WESTON representative for any staining or other
indications of contamination. All Geoprobe® boring locations completed during each phase of
work will be backfilled to surface with pure sodium bentonite pellets.
4.4.3.2 Phase II Geoprobes®
Phase II groundwater sampling will include the instalJation of up to 25 Geoprobe® borings with
the collection of up to 50 groundwater samples (Figure 4-2). The groundwater samples for Phase
II will be collected from the same zones as described for the Phase I investigation (i.e., top of
the water table and top of the Castle Hayne. The proposed locations of these Geoprobe® borings
are described below:
NOA/K:\ WP\ 04400\ 077\ WPMATOO 1 . WP 4-9 12/96
l~---------=--------------------------i
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OGARACE:
SClJRa'.,
l<UaRA !MT. ADllAL A-IOTOS, RE.AL PRCPERTY M C:F CAP£. FENt.
LAW Ol\ftCMENTAL INC. 9TE M#>S
: : . . . .
r
f f lR1JO< SCALE
I
ORUt.l OISPOSAL
IM.A
NORTH
TAMI< CRADLE
AAf.A
L.ABORATORY
PROPERTY UNE
PLT. SC.
FILE NO.
WOODED AREA
-
APPROXMAT[ '111£TlAHD \.MTS
REASOR CHEMICAL COMPANY
CASTLE HAYNE, NORTH CAROLINA
PHASE II GEOPROBE INVESTIGATION -
GROUNDWATER AND SOIL SAMPLING LOCATIONS
FIGURE 4-2
DRA\JN
SLUICE AREA
WRS
'
LEGEND
t & NUMBER OF GEOPROBE BORINGS TO I BE INSTALLED 'MTHIN GIVEN AREA
I , (ACTUAL BORING LOCATIONS 'MLL BE
DETERMINED DURING FIELD INVESTIGATION.)
I
200·
SCALE
DATE
12-96
DATE APPROVED
I/:,. 'fl
400'
FEET
DATE
1,1, □. NO.
04400-077
D\IG, ND.
04400-05
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This document was prepared by Roy F._Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission_of EPA.
Number of Boring Location
Borings
I Adjacent to former garage
location
I Adjacent to pipe shop
2 Adjacent to the two small
ponds at the southeastern end
of the site -Ponds I and 2
3 Along extraction process line
2 Adjacent to the former
refinery area
I Adjacent to the fonner
laboratory location
2 Adjacent to the former Rosin
Warehouse location
2 Adjacent to the former tank
cradle area at the
northwestern end of the site
2 Adjacent to former location
of work tanks and still
2 Within the drum disposal area
2 Adjacent to former Pond
No. 4
2 Adjacent to the former.
Settling Pond
2 Within the former location of
the Sluice Area .
NOR/K: \ WP\ 04400\ 077\ WPMAT001. WP
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section; 4
Revision: 0
Date; January 1997
Purpose of Boring
Determine if groundwater contamination is present underneath
the former garage location and define direction of groundwater
flow across site
Determine if groundwater contamination is present underneath
the former pipe shop location and define direction of
groundwater flow across site
Determine if past discharges to these ponds has affected
groundwater quality and define groundwater flow direction
across site
Detennine if past activities along the extraction process line
has affected groundwater quality and define groundwater flow
direction across site
Determine if past activities at the refinery affected groundwater
quality and define groundwater flow direction across site
Determine if past activities at the laboratory affected
groundwater quality and define groundwater flow direction
across site
Determine if past activities at the rosin warehouse affected
groundwater quality and define groundwater flow direction
across site
Detennine if potential groundwater contamination exists
underneath this area
Determine if past activities at this location have affected
groundwater quality and define groundwater flow direction
across site
Determine if past dumping activities affected groundwater
quality underneath this area and define groundwater flow
direction across site
Detennine if past discharges to this pond affected groundwater
quality and define groundwater flow direction across site
Determine if past discharges to this pond affected groundwater
quality and define groundwater flow direction across site
Determine if past dumping activities affected groundwater
quality uilderneath this area and define groundwater flow
direction across site
4-11 12/96
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. Jt shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Dratt RI/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: O
Date: January 1997
The final locations of the Phase II Geoprobe® borings will be determined by analysis of all soil,
groundwater, surface water, and sediment data collected during the Phase I work. For certain
locations, specifically, the former garage location, northwest tank cradle area, drum disposal
area, and sluice area, the collection of additional groundwater samples will be determined by the
groundwater sample analysis results of Phase I.
Groundwater samples collected during the Phase II activities will be analyzed for VOCs and
SVOCs. At least two samples will also be analyzed for metals and pesticides/PCBs. The
determination of which two samples will be analyzed for the full suite of analytes will be made
after the data from Phase I has been analyzed. In addition, up to four samples may be analyzed
for metals content. The determination of the final number of samples and the locations from
which these samples will be collected will be decided after review of the Phase I data.
Unsaturated soil samples for laboratory analysis will be collected from approximately 13 of the
Phase II Geoprobe® borings. The locations from which these samples will be collected will be
based upon the soil and groundwater sample analytical data collected during the Phase I
investigation.
Soil samples for geologic and hydrogeologic characterization will be collected continuously from
each boring during the Phase II investigation.
4.4.3.3 Phase m Geoprobes®
Phase ill groundwater samples will be collected only in the event that groundwater
contamination has been determined to be beyond the perimeter road. The Phase ill work will
NOR/K:\ WP\ 04400\ 077\ WPMATOO 1 .WP 4-12 12/98
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This document was prepared by Roy F. Weston, Inc., expressly for EPA lt shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: O
Date: January 1997
include up to 6 Geoprobe® boring locations with the collection of up to 12 groundwater samples.
The samples will be collected from the same hydrologic zones as in Phase I and IL The Phase
Ill Geoprobe® boring locations will be analysis and interpretation of data collected in Phases I
and Ill.
Soil samples for geologic and hydrogeologic characterization will be collected in the same
manner as that for the Phase I and Phase II investigations. Unsaturated soil samples for will be
submitted for analysis based upon screening of the samples with an OVA and visual inspection
of the samples for evidence of staining or other indications of contamination.
The analytical parameters of groundwater and soil samples collected during Phase Ill activities
will be determined after analysis of data from Phase I and II activities. At least two samples may
be analyzed for the full suite of parameters.
4.4.4 Surface Soil Investigation
As part of the Phase I field effort, WESTON will collect surface soil samples from the on-site
areas of concern (Figure 4-3). This sampling effort is designed to: (1) determine if contaminants
are present in the areas of concern; (2) concentration of contaminants (if present); and (3)
horizontal extent of contamination within each area of concern. Composite surface soil samples
will be collected from O to 2 feet below surface using hand augers. The number of samples
collected and corresponding analytes within each area of concern are presented in the following
table.
NOA/K:\ WP\04400\077\ WPMAT001.WP 4-13 12/98
1.------------=-----------------c----------i
11
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SOOACC,
KUCl:RA INT. NJaAL PHOTOS. REM.. PROPERTY M CF c.N"E FEAR.
LAW Ol~TAL. INC. SITE MAPS
. . . .
.
: / TRVCI( SC>.1..£
I DRUI.I DISPOSAL
AAEA
NOR1H
TAM< CRAOLE
AREA
pROPERiY LINE
PLT. SC.
FILE NO.
WOODED AREA
APPROXIMA T[ 'll'EllANO LIMITS
REASOR CHEMICAL COMPANY
CASTLE HAYNE, NORTH CAROLINA
SURFACE SOIL SAMPLING LOCATIONS
FIGURE 4-3
SLUICE AREA
DRA\JN
WRS
CHECKE#,l/
'
LEGEND
f ·, & NUMBER OF SOIL SAMPLES TO BE
· , COLLECTED WITHIN GIVEN AREA
I
\
(ACTUAL SAMPLING LOCATIONS WILL BE
. DETERMINED DURING FIELD INVESTIGATION.) ,
\
200·
SCALE
DATE DES. ENG.
. 12-96
APPROVED
400'
FEET
DATE
\,/, □. ND.
04400-077
D\IG, NO.
04400-04
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Area of Concern
Former garage location
Fonner Pipe Shop
Former Transformer bank
Former Chip Processing/Extraction Area
Former Refinery location
Former Laboratory location
Former Electric Wire/Scrap Copper area
Former Work tanks and Still location
Drum Disposal area
Northwestern Tank Cradle area
Former Rosin Warehouse location
Sluice Area
Number of
Samples
5
5
5
20
10
8
8
10
IO
IO
8
12
Draft RJ/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: 0
Date: January 1997
Analytical Parameters
VOCs, SVOCs, Metals
VOCs, SVOCs, Metals
voes, PCBs
voes, svocs
VOCs, SVOCs
voes, svocs
Metals, SVOCs
VOCs, SVOCs
voes, svocs
VOCs, SVOCs
voes, svocs
voes, svocs
At least one sample from each area of concern will be submitted for full analytical parameter
analysis.
A total of three background surface soil samples will be collected from three separate areas
around the site considered to be unaffected by previous site activities. Each of the background
samples will be submitted for full scan analysis (i.e, VOCs, SVOCs, metals, pesticides, and
PCBs). Soils not collected from a boring for laboratory analysis will be used to backfill the
borehole. Surface soil sample locations will be marked with a colored pin flag.
NOR/K:\ WP\ 04400\ 077\ WPMATOO 1. WP 4-15 12/98
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This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
4.4.5 Sediment Sampling
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: 0
Date: January 1997
As part of Phase I site activities, up to 23 sediment sampling locations will be collected from
the locations shown in Figure 4-4. The purpose of the sediment sampling is to attempt to define
potential contamination within on site drainage ditches and ponds as well as off-site drainage
ditches, small streams, creeks, and swamps. The sediment sampling sites include:
• An upgradient location at the northwestern edge of the site
• Eight separate locations within the on-site drainage ditches.
• Two locations within the settling pond at northeastern end of the site
• Two locations within South Pond No. 1
• Two locations within South Pond No. 2
Two locations within the drainage pond in the central portion of the site •
•
•
•
•
A single location within the drainage ditch that emanates from the sluice area
One location within a small stream emanating from the eastern edge of the site
Two locations within the Prince George Creek
Two locations within the swamp on the north border of Prince George Creek
All sediment samples will be analyzed for VOC and SVOC content. The upgradient location,
the two locations within Prince George Creek, and the location at the southwestern end of the
on site drainage ditches will be analyzed for the full analyte list.
4.4.6 Surface Water Sampling
Surface water present on and off-site will also be sampled during the Phase I activities.
Depending upon water availability, up to fourteen sampling locations will be established (see
Figure 4-4). Approximately two thirds of the samples will be collected from on site locations,
NOA/K:\ WP\ 04400\ 077\ WPMATOO 1. WP 4-16 12/96
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SOUR«,
KUC(RA INT. AERIAL PHOTOS. REA1. PROPERTY t.lAP Of CAPE FEAR.
L>,W EN'v1RONMDHAL INC. SIT[ MAPS
"'
'V 'V
"'
WOODED AREA
pROPERn' UNE
>PPROXIMATE l'IETI.ANO UI.IITS
•
"' "'
PLT. SC.
FILE NO.
"'
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"'
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"' "'
"'
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REASOR CHEMICAL COMPANY
CASTLE HAYNE, NORTH CAROLINA
SURFACE WATER AND
SEDIMENT SAMPLING LOCATIONS
FIGURE 4-4
'V
"'
DRA'w'N
LEGEND
• PROPOSED SEDIMENT SAMPLING LOCATIONS
X POTENTIAL SURFACE WATER SAMPLING LOCATIONS
0 300' 600'
SCALE FEET
DATE DES. ENG. DATE
WRS 12 96
V. □. NO.
04400-077
CHECKED J)J),.U DATE APPROVED
/, '/3 f. DATE D\t/G. NO.
04400-01
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. lt shall not be released or disclosed, in whole or in part, without the express written permission of EPA.
Draft Rf/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: O
Date: January 1997
if possible. If water is not available on site, the number of samples will be reduced and the water
will be collected at off-site locations as close to the site as possible.
Ten percent of the surface water samples will be analyzed for the full parameter list. The
remaining samples will be analyzed for VOCs and SVOCs only.
4.4.7 Residential and/or Commercial Well Sampling
During the 1994 NC DEHNR SI, groundwater samples were collected from three residential
wells located near the site. In an effort to verify the results of this sampling event, WESTON
suggests resampling these same wells as well as any new residential and/or commercial wells
that are within 1/4 mile of the site boundaries. Residential or commercial well groundwater
samples will be analyzed for the full suite of analytical parameters. WESTON assumes that EPA
will secure access from appropriate property owners for the residential well sampling program.
4.4.8 Permanent Monitor Wells
In order to continue long term monitoring of the groundwater underneath the site, WESTON will
install up to twelve permanent monitor wells on and around the site (Figure 4-5). The monitoring
system is designed to provide long term groundwater data from upgradient, downgradient, and
on site locations. Approximately nine of the monitor wells will be installed at the top of the
water table (also referred to as th~ shallow wells) and three wells at the top of the Castle Hayne
Limestone formation. The total number of wells and the final locations of the wells will be
determined after review of the data collected during Phases I, II, and ill (if needed).
NOR/K;\ WP\ 04400\ 077\ WP MA TOO 1. WP 4-18 12/96
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SOURCE:
KUCERA fH. AERIAL PHOTOS, REAL PROPERTY tr.t ~ CAPE FEAR.
LAW (N...,RONMOITAL INC. sm: MA.PS
PLT. SC.
FILE NO.
-
----ORUM DISPOSAL
AAEA
NORlli
T>-NK CRAOl.£
AREA
LABORATORY
WOODED AREA
-
----
APPROXllrilA TE \11£Tl.ANO U.CITS
REASOR CHEMICAL COMPANY
CASTLE HAYNE, NORTH CAROLINA
PERMANENT MONITOR WELL LOCATIONS
FIGURE 4-5
SLUICE A~EA
' I
\'. ,
\
-iv
0
LEGEND
MONITOR WELL LOCATION TO BE
INSTALLED AT TOP OF CASTLE
HAYNE FORMATION
0 MONITOR WELL LOCATION TO BE
INSTALLED AT AND THROUGH THE
TOP OF WATER TABLE
(LOCA llONS ARE APPROXIMATE. ACTUAL
LOCATIONS WILL BE DETERMINED AFTER
REVIEW OF DATA GATHERED DURING THE
FIELD INVESTIGATION.)
200' 400'
SCALE FEET
DRA\IN
WRS
CHECKE~.j),{.) APPROVED DATE
IJ. □. NO.
04400-077
DVG. NO.
04400-02
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Draft RljFS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: 0
Date: January 1997
All monitor wells will be installed using hollow stem auger techniques. Each shallow well will
be installed using ten feet of stainless steel screen and the appropriate amount of stainless steel
riser pipe. The deep wells will be installed using 5 ft screen. The width of opening or slot size
of the screen will be determined after examination of the grain size of aquifer materials. The
aquifer materials will be collected during the Geoprobe® investigation and processed through
sieves during the field investigation. During the installation of the monitor wells, well
constrnction materials, i.e., bentonite pellets, sand, cement, and potable water, will be sampled
for VOC and SVOC content. Installation techniques and specifications of each well are discussed
further in the Field Sampling and Analysis Plan (FSAP).
,After completion of the installation of the monitor wells, WESTON will develop each well
according to parameters outlined in the FSAP. The monitor wells will be sampled within one
week after development has been completed, Details of the sampling process are outlined in the
FSAP. During the sampling process, each monitor well will be surveyed for horizontal and
vertical location according to the North Carolina State Plane Grid. Water level measurements
collected during the sampling process will be converted to elevations after the survey has been
completed. The groundwater elevations, in conjunction with data from the Geoprobe®
investigation, will be used to generate a potentiometric map for the site.
4.4.9 Aquifer Testing
Rising head slug tests will be perfom1ed on each of the new permanent wells installed at the
Reasor site in accordance with the methodologies described in Section 3 of the FSAP. Wells will
be selected for slug testing such that the variability in subsurface conditions is represented. The
rising head water level data will be recorded electronically and downloaded to a personal
NOA/K:\ WP\ 04400\ 077\ WP MA TOO 1 .WP 4-20 12/86
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: O
Date: January 1997
computer (PC) to be evaluated in accordance with Bouwer & Rice methodologies for unconfined
aquifers. These data will be utilized along with analytical data to evaluate potential fate and
transport of constituents of concern at the site.
4.4.10 Former Water Supply Wells
During the Phase I investigation WESTON will also attempt to locate the forn1er water supply
wells reportedly located at the Reasor site. The well search will be conducted using visual
inspection of the suspected locations. If the wells cannot be located through visual inspection,
geophysical equipment will be mobilized and used to search for the former wells. If the subject
wells are located, then WESTON will attempt to obtain water levels and collect groundwater
samples for voes, SVOes, metals, and pesticides/PeBs.
4.4.11 Investigation Derived Waste
All residuals from the well installation, including soil cuttings, paper, plastic, water, etc., will
be containerized on site and segregated according to type. All solid waste, i.e., paper, plastic,
etc., will be placed into trash bins for disposal at a local landfill. All soil cuttings will be placed
onto plastic sheeting for temporary storage before confirmatory sampling for hazardous
constituents, including voes and SVOes. If analysis of residual soil samples does not reveal
any contaminant concentrations, the soil will be disposed of on site. All water generated during
decontamination, development, and sampling processes will be held temporarily in storage tanks
that have been brought to the site. The water will be processed through 55-gallon drums
containing activated carbon in order to remove any voe and svoe contaminants. After
processing the water through the carbon containing drums and prior to disposal, the water will
NOA/ K:\ WP\ 04400\ 077\ WPMATOO 1. WP 4-21 12/98
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This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Draft RI/FS Work Plan
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Section: 4
Revision: 0
Date: January 1997
be sampled for verification of VOC and SVOC content. If no contaminants are present, this
water will be released to the U-shaped settling pond.
4.5 SAMPLE ANALYSIS/VALIDATION
4.5.1 Sample Analysis
Chemical analysis of Analytical Level IV samples will be performed following the current EPA
Superfund Contract Laboratory Program Statement of Work for Multi-Media, Multi-
Concentrations Organics and Inorganics. Chemical analyses of Analytical Level III samples will
be conducted in compliance with the requirements of the analytical methods specified in the
FSAP.
4.5.2 Data Validation
Data validation is the process of screening data and accepting, rejecting, or qualifying its
usefulness on the basis of sound criteria. Data will be validated, as appropriate, based on
holding times, initial calibration, continuing calibration, blank results, and other QC sample
results. This will be performed by the EPA Region IV Laboratory Evaluation/Quality Assurance
Section.
The field team leader will review all field documentation for completeness, legibility,
consistency, and reasonable agreement with expected or typical results. Extreme, anomalous,
or seemingly unreasonable results will be accepted only after the accuracy of the measuring I instrument has been verified by one or more additional measurements delivering a similar
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without the express written permission of EPA.
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Section: 4
Revision: 0
Date: January 1997
response. If data fails to meet calibration criteria or data quality objectives, the instmment will
be tagged as out-of-service.
4.6 ENVIRONMENTAL FATE AND TRANSFER MODELING EVALUATION
Data collected during the field investigation, including site physical characteristics, source
characteristics, and extent of contamination, will be used to generate analyses of contaminant
fate and transport. Typically information on contaminant release history is available. As a result,
the observed extent of contamination may be used in assessing the transport pathway's rate of
migration and fate of contaminants over a period between release and monitoring. If information
on contaminant release history is not available from the Reasor Chemical site, contaminant fate
and transport will be estimated on the basis of site physical and source characteristics.
Applicable data will be compiled and entered into computer models for design of the fate and
transport regime. Information generated from the model will be placed onto maps and other
diagrams, and presented within the RI report. A discussion of significant mechanisms in the
subsurface will be presented along with a discussion of findings from the Reasor modeling
effort.
4. 7 BASELINE RISK ASSESSMENT DEVELOPMENT
WESTON will provide a Baseline_ Risk Assessment to EPA consisting of both human health and I environmental/ecological risk assessments. This baseline risk assessment will identify and
summarize chemicals of potential concern (COPC), evaluate potential human and ecological I exposure, characterize the toxicity and effects of the COPC present at the site, describe their fate
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This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
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Reasor Chemical Company Site
Section: 4
Revision: O
Date: January 1997
and transport, and assess potential risk on human health and the ecological environment
(including both flora and fauna).
The procedures required to perform the human health and ecological risk assessment will follow
the general guidance provided by the Superfund Program and Supplemented by EPA Region IV
(EPA, 1989; 1991a,b; 1992a,b; 1995a,b; 1996). EPA may also identify other guidance for the
ecological assessment as necessary. WESTON will also identify applicable or relevant and
appropriate requirements (ARARs) and develop preliminary remediation goals (PRGs) for human
health pathways. A Technical Memorandum describing the results will be submitted to EPA
Region IV 14 days after the Work Plan is finalized. However, it should be emphasized that only
· when the data from the RI are received by WESTON can the final list of chemicals of concern
be ascertained.
4.7.1 Human Health Risk Assessment
The human health risk assessment will consist of the following components:
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Data Collection and Evaluation
Exposure Assessment and Documentation
Toxicity Assessment and Documentation
Risk Characterization
Analysis
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This document was prepared by Roy F. Weston, Inc., expressly for EPA it shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
4.7.1.1 Data Collection and Evaluation
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Section: 4
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EPA will provide WESTON with QNQC validated laboratory data generated during RI activities
at the site. WESTON assumes that the data will be provided on diskette m a standard
spreadsheet fornrnt in numeric values (i.e., Lotus, Excel). The data needs to include all
appropriate parameters necessary for data summarization (i.e., quantitation limits, units).
WESTON will review the available information and shall identify the chemicals of potential
concern (COPC) in each medium. A Technical Memorandum will be submitted to discuss the
COPCs and their environmental pathways. In addition, a brief summary of ecological concerns
will be addressed.
The following guidelines, in accordance with EPA (1989a) and Region IV guidelines (EPA,
1991b, 1995a) will be used in the data evaluation:
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If data are qualified as diluted or estimated, they will be used as presented .
If a sample is duplicated, the data from the two duplicates will be averaged .
All J-qualified data are assumed to be valid data and will be used .
The data summaries for each medium will be tabulated to show for each chemical:
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Detection frequency
Range of detection limits
Arithmetic average of background concentrations
Arithmetic average of detected concentrations
Detected concentrations range
Risk-based screening value
Basis for elimination of selection as a COPC
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without the express written permission of EPA.
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Section: 4
Revision: 0
Date: January 1997
The rationale for elimination or selection of a chemical as a COPC will be in accordance with
EPA (1989) and EPA Region IV guidelines (EPA, 1995a):
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Comparison of the maximum on-site detected concentrations with the risk-based
concentration table.
Those chemicals exceeding the risk-based concentrations will be retained in the
risk assessment.
Comparison of naturally occurring inorganic compounds maximum detected
concentrations to 2 times the average site-specific background concentration.
• Screening on-site media for essential nutrients.
For each medium, the selected COPC will be retained and summarized for further risk
evaluation in the baseline risk assessment.
4.7.1.2 Exposure Assessment and Documentation
Potential current and future land and water uses will be evaluated for the site in order to develop
reasonable maximum exposure (RMB) scenarios for potentially exposed populations. Potentially
exposed populations which may be evaluated for the site include current trespassers, future
residents, and future workers. For each population or receptor identified at the site, an analysis
of potential exposure pathways will be made. This analysis will include an evaluation of:
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Chemical sources and releases (leaching of chemicals from soil into groundwater)
Transport media (i.e., groundwater, surface water, air, soils, sediments)
Exposure points (sluice area, creek)
Exposure routes (i.e., ingestion, inhalation, dermal absorption)
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without the express written permission of EPA
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Reasor Chemical Company Site
Section: 4
Revision: O
Date: January 1997
Quantification of potential exposure will be made by estimating potential exposure
concentrations and calculating exposure doses. In most cases, exposure concentrations will be
estimated using analytic data generated during the RI at the site, and the upper 95 % confidence
limit of the mean will be used as an exposure concentration. If the calculated upper 95 %
confidence limit of the mean exceeds the maximum detected value, the maximum detected value
will be used in the exposure calculations.
• If a chemical is not detected in a particular sample, then one-half of the sample
quantitation limit will be used as the value for that sample.
Exposure concentrations, as well as a number of other exposure assumptions, are used as inputs
into exposure dose models. These models are used to estimate exposure doses in milligrams
chemical/kilograms body weight/day for each exposure route.
4.7.1.3 Toxicity Assessment and Documentation
The toxicity assessment discusses the potential for the COPCs identified to cause adverse health
effects in exposed individuals and presents the chemical-specific quantitative dose-response data
for the COPCs.
WESTON will use information in EPA's Integrated Risk Information System (IRIS) (EPA,
1996) and EPA's Health Effects Assessment Summary Tables (HEAST) (EPA, 1995c) to
identify toxicity values, reference doses (Rills) for the evaluation of noncarcinogenic health
effects, and cancer slope factors (CSFs) for the evaluation of carcinogenic effects of the
chemicals of potential concern. In addition, toxicity values for dermal exposures will be derived
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without the express written permission of EPA.
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Section: 4
Revision: O
Date: January 1997
based on information in Region IV EPA's risk assessment guidance for Superfund (EPA, 1995a).
If a toxicity value is not available, WESTON will contact EPA for guidance and discussion of
approach to derive these numbers. The toxicity section shall include tables which summarize
the weight of evidence and CSFs for carcinogenic chemicals, and RIDs for noncarcinogenic
chemicals.
The infonnation collected during the toxicity assessment will be fonnatted according to Region
IV guidelines (EPA, 1995a).
4.7.1.4 Risk Characterization
WESTON will integrate data from both the exposure and toxicity assessments to quantify the
current and future health risks associated with the chemicals of potential concern at the site.
This section of the report will contain the following:
• Identify the chemicals of concern -chemicals of concern (COCs) are the
chemicals of potential concern (COPCs} that significantly contribute to a pathway
in a use scenario for a receptor that either (a) exceeds a 104 cumulative site
cancer risk; or (b) exceeds a noncarcinogenic hazard index (Ill) of I (EPA,
1995a).
• Quantification of potential risks for each identified chemical of concern and for
each exposure route.
•
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Integration of risks across chemicals and exposure routes that affect the same
individual over the same time period.
Assessment of uncertainty factors involved with risk assessment (this will be a
summary of the uncertainties presented in previous tasks).
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express wri~en permission of EPA.
4.7.1.5 Carcinogenic Risk
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Section: 4
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Date: January 1997
Carcinogenic risk, which is the risk posed to an individual over a lifetime of exposure, will be
calculated for each chemical through each exposure route using the following equation:
Cancer Risk = LADD x CSF
Where:
Cancer Risk = Lifetime carcinogenic risk (expressed as a probability).
LADD = Lifetime average daily dose (averaged over 70 years) (mg/kg-day).
CSF = Cancer slope factor (mg/kg-dayt1•
The total cancer risk posed by all carcinogens and exposure routes associated with each medium
is the sum of the chemical and route-specific cancer risks. A final total cancer risk will be
determined for each scenario across all appropriate media.
4.7.1.6 Noncarcinogenic Risk
Noncarcinogenic risks will be evaluated by comparing predicted chemical daily intakes, which
were averaged over the period of exposure, to reference doses (RfDs) as illustrated in the
following equation:
HQ= ADD/RID
Where:
HQ= Hazard quotient.
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This document was prepared by Roy F. Weston, Inc,, expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Dratt RI/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: 0
Date: January 1997
ADD= Average daily dose (averaged over the exposure period) (mg/kg-
day).
RID= Reference dose (mg/kg-day).
The hazard quotients will be summed to determine the hazard index (HI) for each chemical for
each exposure route and for each exposure scenario (all chemicals and exposure routes
combined). If hazard quotient or hazard index exceeds unity, this indicates a potential risk to
an adverse effect from that chemical(s) through that exposure route(s).
4.7.1.7 Risk-Based Remedial Options
Remedial Goal Option (RGOs) will be calculated for the chemicals of concern. This section will
contain a table of media-specific cleanup levels for each COC in each land use scenario. The
list of COCs is generated at the conclusion of the risk characterization section. The table will
identify cleanup levels for 10-6, 10-5, and 104 cancer risk levels for each ·carcinogenic COC. In
addition, the table will identify cleanup levels for each noncarcinogenic COC at HQ levels of
0.1, 1, and 3 (EPA, 1995a). The purpose of this table is to provide the risk manager with a
range of risk-related media levels as a basis for developing remediation actions during the
feasibility study and proposed plan or the corrective measures study.
4. 7 .2 Environmental/Ecological Risk Assessment
A report describing potential environmental/ecological risks from exposure to site contaminants
will be submitted. The procedures required to perform the ecological risk assessment follow the
general guidance provided by EPA (EPA, 1989b; 1992; 1995b). The general approach used to
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Draft RI/FS Work Plan
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Section: 4
Revision: 0
Date: January 1997
estimate potential ecological effects follows that used in the human health assessment, and
includes data evaluation, exposure assessment, toxicity assessment, and risk characterization.
4.7.2.1 Data Evaluation
The evaluation of data as proposed under the human health risk assessment, including the
general process for selection of chemicals of concern, will also be used for the
environmental/ecological assessment; however, because of the different toxicity of some
chemicals to fish and wildlife as compared with human receptors, the chemicals of concern for
the environmental/ecological assessment may differ from those evaluated in human health risk
assessment. Thus, if applicable, a revised list of chemicals of potential concern will be submitted
for the environmental/ecological risk assessment.
4.7.2.2 Exposure Assessment
The objectives of the exposure assessment include the following:
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Identify significant pathways/routes of exposure .
Identification of habitats that have received or may receive chemicals from the
site.
Identification of the organisms, populations, and/or communities that may be
potentially exposed to the contaminants of concern at the site.
Selection of target species and/or communities .
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without the express written permission of EPA
Draft RI/FS Work Plan
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Section: 4
Revision: 0
Date: January 1997
• Estimation of exposure point concentrations.
• Prediction of exposure doses for the selected target species .
The initial step in the exposure assessment will be to identify the habitats on or near the site that
may be affected by site chemicals. Factors that will be considered in this evaluation include the
location of chemical sources, prediction of chemical migration and persistence, local topography,
local land and water uses, and the location of terrestrial and aquatic habitats in relation to
chemical distribution and potential migration at the site. This infom1ation serves as the basis for
choosing receptor organisms, or target species, for those habitats. Target species will be chosen
for evaluation in the ecological assessment based on a number of criteria which include:
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Species that are threatened, endangered, or of special concern .
Species that are valuable for recreational purposes .
Species that are important to the well-being of either or both of the above groups .
Species that are critical to the structure or function of the ecosystem which they
inhabit.
Species that are sensitive indicators of ecological change .
Species for which reasonable prediction of exposure and consequent risk is
possible.
To help identify potential target -species at this site, information will be obtained from a site
visit, published reports, and/or from contacts with state and federal resource trustees (Natural
Heritage Database, U.S. Fish and Wildlife Service, state game/fish commissions). There are
some instances where the selection of target species will not be necessary, such as when media-
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This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: 0
Date: January 1997
specific criteria which protect a large percentage of species are available (e.g., water quality
criteria), or when available toxicity data are not sufficient to justify a species level analysis (e.g.,
plants).
An analysis of potential exposure routes/pathways will be made for each of the target species.
All exposure routes of little or no concern based on an analysis of site characteristics will be
eliminated. Focus will be given to those pathways and species considered critical to the
evaluation of ecological risk at the site.
4.7.2.3 Toxicity Assessment
The toxicity assessment characterizes the toxicity of the chemicals of potential concern to
ecological receptors. Scientific literature and regulatory guidelines will be reviewed for medium-
specific and species-specific toxicity data. Some of the databases and screening tools reviewed
may include:
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Aquatic Information Retrieval (AQIBRE)
Quantitative Structure Activity Relationships (QSAR) database
Hazardous Substances Database (HSDB)
ENVIROFATE database
Integrated Risk Information System ORIS)
Registry of Toxic Effects of Chemical Substances (RTECS)
Phytotox database
Region IV Waste Management Division Sediment Screening Values
Region IV Waste Management Division Freshwater Quality Values
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
4. 7 .2.4 Risk Characterization
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Section: 4
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In the risk characterization, information from the exposure and toxicity assessments will be
integrated in order to estimate the potential hazard or risk to the ecological receptors.
4.8 RI REPORT
Following approval of the RI Work Plan, WESTON will begin implementation of the field
investigation. At least two weeks prior to the enactment of field work, WESTON will notify
EPA that field work will commence on a given date. After the Phase I and Phase II field work
efforts have been completed, WESTON will issue a Site Characterization Summary for each
completed phase of work.
The Site Characterization Summary will briefly review the analytical results of investigative
activities to provide EPA and WESTON with a reference for evaluating the development and
screening of remedial alternatives. Additional information to be included in each summary will
comprise site descriptions, brief discussions of field activities, including sampling activities and
methodologies, brief review of site geologic and hydrogeologic characteristics, and a brief
discussion and visual presentation of contamination in the sampled matrices. Maps of sampling
locations and analytical results will be prepared for each Site Characterization Summary.
Following completion of all field activities and receipt of all analytical data, WESTON will issue
the Draft RI Report. The draft will be presented to EPA and ESD for review. WESTON will
also use the data collected during the RI field work and presented in the Draft RI Report to
begin preparation of the baseline risk assessment. The fonnat of the draft RI will follow the
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This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Draft Rl/FS Work Plan
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Section: 4
Revision: 0
Date: January 1997
suggested RI report format on page 3-30 of the Guidance for Conducting Remedial Investigations
and Feasibility Studies Under CERCLA, Interim Final, October 1988.
Following issuance of the Draft RI Report, there will be a review and comment period by EPA,
ESD, and NCDEHNR. After receipt and review of the RI comments, WESTON will review and
respond to each comment. An RI comments letter with the response to each comment will be
prepared for EPA. Following issuance of the letter, WESTON will revise the RI Report for
eventual submittal to EPA as the Final RI Report.
4.9 REFERENCES
EPA (U.S. Environmental Protection Agency). 1985. Development of Statistical Distributions
or Ranges of Standard Factors Used in Exposure Assessments. Washington, DC OHEA-E-61.
EPA (U.S. Environmental Protection Agency). 1989. Risk Assessment Guidance for Superfund.
Volume 1 -Human Health Evaluation Manual (Part A). Interim Final. Office of Emergency and
Remedial Response. OSWER Directive 9285-0la.
EPA (U.S. Environmental Protection Agency). 1989a. Ecological Assessment of Hazardous
Waste Sites: A Field and Laboratories Reference.
EPA (U.S. Environmental Protection Agency). 1989b. Risk Assessment Guidance for
Superfund -Volume II, Environmental Evaluation Manual.
EPA (U.S. Environmental Protection Agency). 1991. Summary Report on Issues in Ecological
Risk Assessment.
EPA (U.S. Environmental Protection Agency). 1991a. Risk Assessment Guidance for Superfund,
Volume 1 -Human Health Evaluation Manual, Supplemental Guidance, "Standard Default
Exposure Factors." Interim Final. OSWER Directive 9285.6-03.
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Draft RljFS Work Plan
Reasor Chemical Company Site
Section: 4
Revision: 0
Date: January 1997
EPA (U.S. Environmental Protection Agency, Region IV). 1991b. "Supplemental Region IV
Risk Assessment Guidance." March 1991.
EPA (U.S. Environmental Protection Agency, Region IV). 1992a. "New Interim Region IV
Guidance." February 1992.
EPA (U.S. Environmental Protection Agency). 1992b. Risk Assessment Guidance for Superfund.
Volume 1 -Human Health Evaluation Manual (Part B). Development of Risk-Based Preliminary
Remediation Goals. January 1992b.
EPA (U.S. Environmental Protection Agency). 1995a. Supplemental Guidance to RAGS: Region
4 Bulletins, Human Health Risk Assessment. Office of Health Assessment. November 1995.
EPA (U.S. Environmental Protection Agency). 1995b. Supplemental Guidance to RAGS: Region
4 Bulletins, Ecological Risk Assessment. Office of Health Assessment. November 1995.
U.S. Department of Agriculture, Soil Survey. New Hanover County. North Carolina, June 1964.
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Dratt RI/FS Work Plan
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Section: 5
Revision: O
Date: January 1997
SECTION 5
FEASIBILITY STUDY WORK PLAN
WESTON will utilize the data collected and analyzed during the RI and Risk Assessment to
conduct the Feasibility Study (FS). The FS will include development and screening of an
appropriate range of waste management options followed by a detailed evaluation of potential
remedial action alternatives. The range of options will include, at a minimum, alternatives in
which treatment is used to reduce the toxicity, mobility, or volume of the waste, but varying in
the types of treatment, the amount treated, and the manner in which long-tenn residuals or
untreated wastes are managed; alternatives that involve containment and treatment components;
alternatives that involve containment with little or no treatment; and a no-action alternative.
5.1 DEVELOPMENT AND SCREENING OF REMEDIAL ACTION ALTERNATIVES
Based on the data collected in the RI, the preliminary remedial response objectives identified
during the RI will be developed more fully and finalized. General response actions, or categories
of remedial action alternatives, will be selected to address each site problem area response
objective. These general response actions will forn1 the basis for the technology screening. Any
revisions to the remedial action objectives will be documented in a technical memorandum.
To the extent applicable, the site problem(s), remedial response objectives, clean-up criteria, and
general response actions will be described for individual operable units (e.g., contaminant
source, groundwater contaminant plume).
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This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or ln part,
without the express written permission of EPA.
5.1.1 Identification and Screening of Remedial Technologies
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Section: 5
Revision: O
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On the basis of technical guidance documents, general technical literature, and experience with
site remediation, a list of potentialJy applicable remedial action technologies wilJ be prepared for
each general response action. This list will be prepared from guidance materials, technical
literature, and experience with waste treatment, construction, and site remediation. The
technologies on the list will be screened with regard to practical applicability under conditions
of the site, remedial response objectives, and clean-up criteria. The result wilJ be lists of
specific technologies that have reasonable probability of contributing to the remediation of the
site.
5.1.2 Development of Alternatives
The technologies resulting from the screening will be used to develop remedial action
alternatives, each of which will be developed to be capable of accomplishing the clean-up criteria
for each affected medium. Each alternative will consist of one or more technologies.
Technologies will be combined such that they are compatible and complete in that they appear
reasonably capable of fulfilling the requirements of the corresponding general response action.
Alternatives that reduce the toxicity, concentration, volume, or mobility of the contaminants will
be developed as the situation allows.
As required by SARA, alternatives will be developed in each of the following categories:
• An alternative for treatment that would eliminate, or m1mm1ze to the extent
feasible, the need for long-term management (including monitoring) at the site;
NOA/ K:\ WP\ 04400\ 077\ WP MA TOO 1. WP 5-2 12/96
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This document was prepared by Roy F. Weston, Inc,, expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
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Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 5
Revision: 0
Date: January 1997
Alternatives that would use treatment as a primary component of an alternative
to address the principal threats at the site;
An alternative that relies on containment, with little or no treatment but is
protective of human health and the environment by preventing potential exposure
and/or by reducing mobility; and
• A "no action" alternative.
5.1.3 Initial Screening of Alternatives
The remedial alternatives resulting from Task 2 will be further screened to ensure that only
alternatives having a reasonable probability of being found acceptable proceed to detailed
evaluation. The following factors will be considered in the screening:
•
•
Environmental Protection: Only those alternatives that have a reasonable
probability of satisfying the remedial response objectives and contribute
substantially to the protection of public health, welfare, or the environment will
be considered further. Source control alternatives will be capable of achieving
adequate control of source materials. Off-site alternatives must be capable of
minimizing or mitigating the threat to public health, welfare, or the environment.
Environmental Affects: Alternatives that appear to pose significant adverse
environmental effects will be excluded, unless mitigating measures can be
incorporated into the alternative.
NOA/K:\ WP\ 04400\ 077\ WP MA TOO 1. WP 5-3 12/98
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
•
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 5
Revision: 0
Date: January 1997
Implementability and Reliability: Alternatives that appear to be extremely
difficult to implement or do not appear to be capable of achieving the remedial
objectives in a reasonable time period will be eliminated.
• Cost: Cost will be used to discriminate only among alternatives that provide
similar results. Alternatives that appear to be capable of providing results similar
to other alternatives, but appear likely to be substantially higher in cost, will be
eliminated. Cost will be used to discriminate among treatment alternatives or
nontreatment alternatives, but not between treatment and nontreatment
alternatives. Initial (capital) and ongoing (operating and maintenance) costs will
be considered based on cost data available in guidance and general literature.
•
•
Pernianence of Remedy: Pennanent remedies will be preferred over landfilling
or remedies that leave waste in place, even if the cost exceeds those of other
remedies. Non-permanent remedies that do not appear to offer significant
advantages over permanent remedies will be eliminated.
Innovative Technology Treatment and Resource Recovery: Alternatives
incorporating innovative technologies will be preferred if there is reasonable
belief that the innovative technology allows the alternative to offer potential for
improved perfonnance or implementability and poses fewer adverse impacts than
other available alternatives. Alternatives incorporating innovative technologies
will not be eliminated solely because of the inclusion of the technology.
NOA/K:\ WP\ 04400\ 077\ WPMATOO 1. WP 5-4 12/96
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 5
Revision: O
Date: January 1997
5.1.4 Initial Screening Technical Memorandum
At the completion of the initial screening, WESTON will prepare and submit a technical
memorandum summarizing the work performed and the results of each task above. The
memorandum will include an array summary as well. Comments from EPA regarding the
development of alternatives will be reported in the detailed analysis.
5.2 TASK 5 -DETAILED EVALUATION OF THE ALTERNATIVES
The remedial alternatives resulting from the screening will be further developed and undergo
detailed evaluation for technical, environmental and cost considerations. A description of each
alternative will be prepared, consisting at a minimum of the following:
• Description of the alternative and the individual technologies.
•
•
•
•
Special engineering considerations required to implement the alternatives (e.g.,
pilot treatment facility, additional studies needed to proceed with final remedial
design);
Environmental impacts of proposed methods and costs for mitigating any adverse
effects;
Operation, mai.ntenance, and monitoring requirements of the remedy;
Off-site disposal needs and transportation plans;
NOR/K;\ WP\ 04400\ 077\ WPMA 1001. WP 5-5 12/96
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This document was prepared by Roy F. Weston, Inc,, expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
•
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Temporary storage requirements;
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 5
Revision: 0
Date: January 1997
Safety requirements for remedial action implementation (including on-site and off-
site health and safety considerations);
A description of how the alternative could be phased into individual operable
units, if applicable. The description will include a discussion of how various
operable units of the total remedy could be implemented individually or in
groups, resulting in a significant improvement to the environment, savings m
costs, or simplified logistics.
A description of each alternative could be segmented to allow staged
implementation of segments over time, if applicable.
A review of off-site waste treatment, storage, and disposal facilities that are part
of the alternative to ensure that the facilities are in compliance with applicable
RCRA requirements, both current and proposed.
Each alternative will undergo an environmental assessment. In accordance with the project SOW,
the environmental assessment will include, at a minimum, an evaluation of each alternative's
environmental effects, an analysis of measures to mitigate adverse effects, physical or legal
constraints, and compliance with _CERCLA or to her regulatory requirements. Each alternative
will be assessed in tern1s of the extent to which it mitigates damage to or protects public health,
welfare, and the environment in comparison to the other alternatives. The specific considerations
NOA/K:\ WP\ 04400\ 077\ WP MA TOO 1 .WP 5-6 12/96
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 5
Revision: 0
Date: January 1997
to be used in the assessment will be referenced to standards and criteria developed under federal
or state environmental and health statutes.
Each alternative will also undergo a detailed cost analysis. Estimates of initial costs and
operating and maintenance costs over time will be prepared and the present-worth equivalent cost
will be computed using a time-value-of-money rate (discount or interest rate) prevailing at the
time or otherwise specified by EPA.
The detailed evaluation of the alternatives will conform to the requirements of the National
Contingency Plan, in particular, Section 300.68 (h), Subpart F, and will consist of a technical,
environmental, and cost evaluation. The detailed evaluation will follow the process as specified
in the "Guidance for Conducting RI/FS under CERCLA" (USEPA 1988). Nine evaluation
criteria are stipulated that are to be applied in the evaluation of each alternative.
Table 5-1 presents the nine evaluation criteria and the factors considered for each evaluation
criterion. A brief description of each criterion follows.
Short-Tenn Effectiveness
This criterion addresses the effects of the alternative during the construction and implementation
phase until the remedial actions have been completed and the selected level of protection has
been achieved. Each alternative is evaluated with respect to its effects on the community and on-
site workers during the remedial action, environmental impacts resulting from implementation,
and the amount of time until protection is achieved.
NOA/K:\ WP\ 04400\ 077\ WPMATOO 1 .WP 5-7 12/88
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
•
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Table 5-1
Detailed Evaluation Criteria
Dratt RJ/FS Work Plan
Reasor Chemical Company Site
Section: 5
Revision: 0
Date: January 1997
SHORT-TERM EFFECTIVENESS
Protection of community during remedial actions
Protection of workers during remedial actions
Time until remedial response objectives are achieved
Environmental impacts
LONG-TERM EFFECTIVENESS
Magnitude of risk remaining at the site after the response objectives have been met
Adequacy controls
Reliability of controls
REDUCTION OF TOXICITY. MOBILITY. OR VOLUME
Treatment process of remedy
Amount of hazardous material destroyed or treated
Reduction in toxicity, mobility, or volume of the contaminants
Irreversibility of the treatment
Type and quantity of treatment residuals
IMPLEMENTABILITY
COST
Ability to construct technology
Reliability of technology
Ease of undertaking additional remedial action, if necessary
Monitoring considerations
Coordination with other agencies
Availability of treatment, storage capacity, and disposal services
Availability of necessary equipment and specialists
Availability of prospective technologies
Capital costs
Annual operating and maintenance costs
Present worth analysis
Sensitivity analysis
NOR/ K: \ WP\ 04400\ 077\ WPMATOO 1. WP 5-8 12/96
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. lt shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
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Table 5-1 (Continued)
Detailed Evaluation Criteria
COMPLIANCE WITH ARARS
Compliance with chemical-specific ARARs
Compliance with action-specific ARARs
Compliance with location-speci fie ARA Rs
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 5
Revision: 0
Date: January 1997
Compliance with appropriate criteria, advisories, and guidance
OVERALL PROTECTION OF HUMAN HEALTH AND ENVIRONMENT
STATE ACCEPTANCE
COMMUNITY ACCEPTANCE
NOA/K:\ WP\04400\077\ WPMAT001.WP 5-9 12/96
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Long-Tem1 Effectiveness
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 5
Revision: 0
Date: January 1997
This criterion addresses the results of a remedial action in tem1s of the risk remaining at the site
after the response objectives have been met. The primary focus on this evaluation is to detennine
the extent and effectiveness of the controls that may be required to manage the risk posed by
treatment residuals and/or untreated wastes. The factors to be evaluated include the magnitude
of remaining risk (measured by numerical standards, such as cancer risk levels), and the
adequacy, suitability, and long-term reliability of management controls for providing continued
protection from residuals (i.e., assessment of potential failure of the technical components). The
long-tenn effectiveness factors cited in SARA, Section 121 (b) (I) will be addressed.
Reduction of Toxicity. Mobility. and Volume
This criterion addresses the statutory preference for selecting remedial actions that employ
treatment technologies that permanently and significantly reduce toxicity, mobility or volume of
the contaminants. The factors to be evaluated include the treatment process employed, the
amount of hazardous material destroyed or treated, the degree of reduction expected in toxicity,
mobility and volume, and the type and quantity of treatment residuals.
Implementability
This criterion addresses the technical and administrative feasibility of implementing an
alternative and the availability of various services and materials required during its
implementation. Technical feasibility considers construction and operational difficulties,
reliability. ease of undertaking additional remedial action (if required), and the ability to monitor
NOA/K: \ WP\ 04400\ 077\ WPMATOO 1. WP 5-10 12/96
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Dratt RI/FS Work Plan
Reasor Chemical Company Site
Section: 5
Revision: 0
Date: January 1997
its effectiveness. Administrative feasibility considers activities needed to coordinate with other
agencies (e.g., state and local) in regards to obtaining permits or approvals for implementing
remedial actions.
Cost
This criterion addresses the capital costs, annual operation and maintenance costs, and present-
worth analysis.
Capital costs consist of direct (construction) and indirect (nonconstruction and overhead) costs .
·Direct costs include expenditures for the equipment, labor, and material necessary to perforn1
remedial actions. Indirect costs include expenditures for engineering, financial, and other
services that are not part of actual installation of remedial alternatives. Annual operation and
maintenance costs are post-construction costs necessary to ensure the continued effectiveness of
a remedial action. These costs will be estimated to provide an accuracy of +50 percent to -30
percent.
A present-worth analysis is used to evaluate expenditures that occur over different time periods
by discounting all future costs to a common base year, usually the current year. This allows the
cost of remedial action alternatives to be compared on the basis of a single figure representing
the amount of money that would be sufficient to cover all costs associated with the remedial
action over its planned life. As suggested in the EPA's guidance (1988), a discount rate of five
percent will be considered unless the market values indicate otherwise during the performance
of the FS.
NOA/ K:\ WP\ 04400\ 077\ WPMATOO 1. WP 5-11 12/96
I
This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA
Compliance with ARARs
Draft AI/FS Work Plan
Reasor Chemical Company Site
Section: 5
Revision: 0
Date: January 1997
This criterion is used to determine how and to what extent each alternative complies with J' applicable or relevant and appropriate federal and state requirements, as defined in CERCLA
Section 121.
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Overall Protection of Human Health and the Environment
This criterion provides a final check to assess whether each alternative meets the requirement
that it is protective of human health and the environment. The overall assessment of protection
is based on a composite of factors assessed under the evaluation criteria, especially long-term
effectiveness and permanence, short-term effectiveness, and compliance with ARARs.
State Acceptance
This criterion evaluates the technical and administrative issues and concerns the State may have
regarding each of the alternatives. The factors to be evaluated include those features of
alternatives that the State supports, reservations of the State, and opposition of the State.
Community Acceptance
This criterion incorporates public concerns into the evaluation of the remedial alternatives.
NOA/K:\ WP\ 04400\ 077\ WP MA TOO 1. WP 5-12 12/98
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Dratt RljFS Work Plan
Reasor Chemical Company Site
Section: 5
Revision: 0
Date: January 1997
After each of the remedial alternatives has been assessed against the nine criteria, a comparative
analysis will be performed. This analysis will compare all the remedial alternatives against each
other for each of the nine evaluation criteria.
5.3 Feasibility Study Report
Upon completion of the detailed analysis, WESTON will prepare a Draft FS Report for review
and comment. This response will be prepared in general accordance with the suggested forniat
outlined in the EPA Guidance document "Guidance for Conducting Remedial Investigations and
Feasibility Studies Under CERCLA," October 1988. This report will be used by EPA to
document the development and analysis of the remedial action alternatives and will be the basis
for remedy selection. WESTON will address any comments on the Draft Report and prepare a
final FS Report.
NOA/K:\ WP\ 04400\ 077\ WP MA TOO 1. WP 5-13 12/96
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without the express written permission of EPA.
6.1 ORGANIZATION
SECTION 6
PROJECT MANAGEMENT
Draft AI/FS Work Plan
Reasor Chemical Company Site
Section: 6
Revision: 0
Date; January 1997
The organization of the project responsibilities described below is also presented in Figure 6-1,
the Project Responsibilities Chart.
6.1.1 Work Assignment
Mark A. Taylor, P.G., will be responsible for planning, coordinating, integrating, monitoring,
and appraising (i.e., managing) all project activities. These will include the activities of any
subcontractors to WESTON (e.g., drillers). Mr. Taylor also will be responsible for the
identification and ultimate resolution of technical problems and the technical coordination of the
field efforts, hydrogeological evaluation, and contamination assessment. Field audits are also
the responsibility of the WESTON Project Manager.
6.1.2 Quality Assurance Coordinator
William R. Doyle, as the ARCS Program Manager for WESTON, will be responsible for the
accuracy and precision of field-generated sample data and infomrntion. He will have the
authority to impose proper procedures or to halt an operation. His duties include QA review
and approval of sampling procedures, field documentation, and all technical data.
NOA/K; \ WP\ 04400\ 077 \ WPMATOO 1. WP 6-1 12/96
Contract Administration
Chandra McNeil-Norton
I
CLP Laboratory
Coordinator Subcontractors
Direct-Push
Drilling/Well
Installation
CLP
Laboratory Surveying
NOR/k:\WP\04400\077\F-LG _ 2-1. PPT
EPA RPM
Giezelle Bennett
Work Assignment Mgr. Region Program Mgr.
Mark A. Taylor William R. Doyle
Health & Safety
William R. Doyle
Site Manager Risk Assessment Remedial Invest Feasibility Study
David D. Nelson Leader Leader Leader
Monica Caravati Mark Taylor Ralph McKeen
Geologist Toxicologists Geologists
Engineers Hydrologists Modelers
Technicians Chemists Regulatory
Civil Engineers Specialists
Project Organization
Figure 6-1
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
6.1.3 Project Field Team Manager
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 6
Revision: 0
Date: January 1997
David Nelson, P. G,, as the Project Field Team Manager, will be responsible for oversight of
operations in the field and the proper execution of all field activities. He will be responsible for
ensuring that all procedures for the field activities related to the RI are executed in the proper
manner and are documented,
6.1.4 Field Safety Coordinator
The Field Safety Coordinator will be responsible for: (I) having an up-to-date Health and Safety
Plan (HASP) in place; (2) overseeing that subcontractors adhere to the HASP; (3) training of
all personnel involved in health and safety procedures; (4) maintaining control in emergencies;
(5) keeping a logbook of activities; and (6) supervising the decontamination area and work site
setup,
6.1.5 Laboratory Staffing
All analytical work except for residual confirmatory sampling and geochemical and geotechnical
sampling will be performed by Contract Laboratory Program (CLP) and coordinated by the EPA
Region IV Contract Laboratory Analytical Services Support (CLASS) Contractor.
NOA/K: \ WP\ 04400\ 077\ WP MA TOO 1. WP 6-3 12/96
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This document was prepared by Roy F. Weston, lnc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
6.1.6 EPA Personnel
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section; 6
Revision: 0
Date: January 1997
Ms. Giezelle Bennett is the EPA Region IV Remedial Project Manager who will be responsible
for Agency coordination and for oversight of the project. Ms. Diane Barrett will be responsible
for coordination of all community relations activities.
6.2 PROJECT SCHEDULE
The anticipated schedule for the project is shown on Figure 6-2. Work on subcontractor
solicitation (ED #5) will begin upon receipt of the Work Plan approval. At that time, the
schedule will be revised, if necessary, reflecting the actual start date.
The duration of the Baseline Risk Assessment and Feasibility Study begins when data is available
to start initial evaluations and ends with the submission of the Final RI and FS reports. These
tasks will be performed on an intermittent basis as new data is received throughout the entire
duration shown on this schedule.
6.3 DELIVERABLES SCHEDULE
The following table lists the deliverables outlined in the statement of work and the anticipated
WESTON review/preparation period prior to submission to the EPA.
NOR/I<:\ WP\ 04400\ 077\ WP MA TOO 1 . WP 6-4 12/96
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ID Task Name
Rl/FS Work Plan Submittal
2 EPA Review of Work Plans
3 WP Revision & Resubmittal
4 EPA WP Approval
5 Subcontractor Procurement
6 Mobilize to Field
7 Phase I RI Sampling
8 Sample Analyasis (CLP)
9 Site Characterization I
10 Baseline Risk A5:sessment
11 Human Health RA
12 Ecological RA
13 Phase 11 RI Sampling
14 Sample Analysis (CLP)
15 Site Characerization II
16 Phase 111 -Install Monitor Wells
17 CLP Analysis
18 Draft RI Report/EPA Review
19 Final RI Report
20 Feasibility Study
21 ID/Screen Technologies
22 Develop Alternatives
23 Screen Alternatives
24 Evaluation of Alternatives
25 Draft FS Report/EPA Review
26 Final FS Report
Project: Reasor Chemical Company
Date: 1/13/97
Duration
1d
30d
20d
14d
30d
1d
20d
45d
7d
167d
167d
160d
10d
45d
7d
20d
45d
30d
15d
135d
25d
Task
Progress
15d
30d
20d
30d
15d
Start
1/14/97
1/15/97
2/26/97
3/26/97
4/15/97
6/2/97
6/3/97
7/1/97
9/2197
9/22/97
9/22197
10/1/97
9/15/97
9/29/97
1211/97
12/10/97
117/98
3/11/98
4/22/98
12/15/97
12115/97
1/19/98
2/9/98
3/23/98
4/20/98
6/1/98
• Ctr 1, 1997 Ctr 2, 1997
Jan Feb Mar Apr May Jun
h :~
Milestone
Summary
♦ •
Ctr 3, 1997 Ctr 4, 1997 Ctr 1, 1998 Ctr 2, 1998 Ctr 3, 1998 Ctr 4, 1998 Ctr 1; 1999 Ctr 2, 1999 Ctr 3, 1999 Ctr 4, 1999
Rolled Up Task Rolled Up Progress j • Rolled Up Milestone 0
Page 1
F]GURE 6-2
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
Deliverable
Draft Work Plan/FSAP/QAPP
Final Work Plan/FSAP/QAPP
Health and Safety Plan
Monthly Progress Reports
Site Characterization Summary (Phase I)
Site Characterization Summary (Phase II)
Remedial Action Objective Technical
Memorandum (FS)
DQO/PRG Technical Memorandum (RA)
COC Technical Memorandum (RA)
Draft RI Report
Final RI Report
Technology Screening Technical Memorandum
Initial Screening of Remedial Alternatives
Technical Memorandum (FS)
Draft FS Report
Final FS Report
6.4 PROJECT BUDGET
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 6
Revision: 0
Date: January 1997
Schedule
Submittal 60 days after receipt of work assignment.
Submittal 20 days after receipt of EPA comments.
Submittal 10 days prior to site visit.
20th of each month.
Submittal 7 days after receipt of CLP data.
Submittal 7 days after receipt of CLP data.
Submittal concurrent with Site Characteriution
Summary.
Submittal 14 days after approval of RI/FS Work Plan.
Submittal 20 days after receipt of all CLP data.
Submittal 25 days after EPA approval of Site
Characterization Summary.
Submittal 20 days after receipt of all CLP data.
Submittal 15 days after EPA approval of technology
screening.
Submittal 30 days after EPA approval of remedial
alternatives screening.
Submittal 15 days after receipt of EPA comments.
The project budget and personnel requirements are detailed on the Optional Form 60R contained
in this section. The budget reflects WESTON's best estimate of the labor and resources
necessary to accomplish this project in accordance with the scope of work detailed in Sections
4 and 5 of this work plan.
NOA/K.:\ WP\04400\077\ WPMATOOl .WP 6-6 12/96
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CONTRACT PRICING PROPOSAL Office of Management and Budget
e----------"(R"'es"'e,:,a,-_r,:,ch"---"'an:,,d,_D=cvc.,ce-"lo=nm,,:c.:.,_nt,._) _____ +-_=A roval No. 29-R-0184
This form is for use when (i) submission of cost or
pricing data is required and (ii) submission for the
Page No.: No. of Pages:
Qp_tional Form 99 is authorized by contracting offi,.:_,c::.:e::..:r·'-----------f-----'1'---------~'--------'2'--1
Name of Offerer: Supplies and/or Services to be Furnished:
Rav F. Weston, Inc.
Home Office Address: Work Plan Revision 0
Weston Way Reasor Chemical
f----'-W-'e~st'-C"'h.:..:e~st=e'--'r '-'P-'e=nn=s=vlv-=an.:..:i-=a--'-l'-93-'8--'-0-------------+C'-a--'-st'-le'-H~ax,~n=e~, -=N-'C'-------------
Division and Location(s) where work to be performed:
Atlanta, GA
Total Proposal Amount:
499,924
DETAILED DESCRIPTION OF COST ELEMENTS
I. DIRECT MATERIAL
2. MATERIAL OVERHEAD
3. DIRECT LABOR: EST HRS RA TE/I-IR EST COST
See Exhibit A
Solicitation No.
W.A. #77-4RI24
TOTAL COST
-----5,247.0 .......... 136,744j
c-----T-'o_T-=A=L-'D~1-=R=E--'-c~T-=L-=A_B-=o_R ______ ---ftt~=n,~;,=/1=7'~x=n=n=i=n,=YdWm n1mnm0·;<=••• ••">"4?! __ ~1~36~,_74__,4
14, LABOR OVERHEAD: j O.H.RATE X BASE= EST COST
112.21% 136,744 153,441
'--------=T-=O:..:Tc:..A:..:L:..:L=:A..::B::..:O::..:Rc.:....::::O...:.V-=E=--=R.:..:H=E.:..:Ac.::D _____ .:cf/"'/i'-'/j""/j'-'f/""/f""f"'•·· 2)""{""········••);/(i!Jj) ·••Jf}V)jj})jj() \ t•\i 153,441
5. SPECIAL TESTING: ~
6. SPECIAL EQUIPMENT:
7. TRAVEL: a. Transportation (See Table 3) 7 266
b. Per Diem & Subsistence (See Table 3) _____________ 12:900
TOT AL TRAVEL WWidiil i : 20,166
8.POOLSUBCONTRACTORS ESTCOST I
e---------------'-T:o'.O__._T..:cAo=L'---'P-"O-"Oe.'L=--ccSU=BC~O=N__._T.!:oR!cA'-"C'---'T-"O'..':R°"S'-------J.,,'11!.f;'.fll!cl"y11L--•••""i------'6'-'2"',2::.:5=5
9. OTHER DIRECT COSTS
10. TOTAL DIRECT COST AND OVERHEAD
11. GENERAL AND ADMINISTRATIVE EXPENSE (See Table 1)
12. FACILITIES CAPITAL COST OF MONEY (FCCM)(See Table I)
13. TOT AL ESTIMATED COST
14. FEE OR PROFIT
15.
a. All Base Fees After FCCM (See Table 2-1)
b. All Award Fees /See Table 2-11
TOTAL ESTIMATED COST AND FEE OR PROFIT
28,418
401,024
57,951
6,289
465,265
6,616
28,037
499,924
I.
This proposal is submitted for use in conjunction with and in response to (Describe RFP, etc.) Contract No. 68-W9-0057,
Work Assignment No. 77-4RI24, RI/FS, and reflects our basic estimates as of this date.
TYPED NAME AND TITLE SIGNATURE µdtN )/
William R. Dovie, Program Manaeer -
NAME OF FIRM DA TE OF SUBMISSI N
, Rox F. Weston, Inc. Januarx I 3, I 997
EXHIBIT A -SUPPORTING SCHEDULE
3. DIRECT LABOR Category Hours Rate Est Cost
Professional 4 133.0 52. 16 6,937
Professional 3 1,97 LO 30.52 60,155
Professional 2 1,908.0 22.75 43,407
Professional I 1,156.0 16.97 19,617
Technician 2 79.0 18.35 1,450
Professional Total 5,247.0 131,566
I ·,·
Clerical 2 496.0 10.44 5,178
0
Support Total 496.0 5,178
I'
'
Total Direct Labor 5,743.0 136,744
9. OTHER DIRECT COSTS
External ODCs (Sec Table 4) 9,990
Internal ODCs (Sec Table 4) 18,428
28,418
I. Has any Executive Agency of the United States government performed any review of your accounts
or records in connection with any other government prime contract or subcontract within the past
year? X Yes No -
Name and address of reviewing office and individual Telephone Number/Extension
DCAA, 1421 Cheri)' St, Philadelnhia, PA 19102, Robert Kozubel, Suoer. Auditor
II. Will you require the use of any government property in the performance of this proposed
contract? X Yes No
III. Do you require government contract financing to perform this proposed contract?
X Yes No (lfyes, identifx.): Advance paxments X Progress £'.lxments Guaranteed loans
IV. Do you now hold any contract for the same or similar work called for by this contract?
X Yes No (lfves, identify,): This is an amendment to Contract No. 68-W9-0057
V. Docs this cost summary conform with the cost principles set forth in Agency regulations?
X Yes No
I'
--
REASOR CHEMICAL
WBS
Task/ACTIVITY
I Scoping Meeting
2 Work Plan Memo
3 Site Visit
4 Existing Data Evaluation
5 Develop Conceptual Site Model
6 Preliminary RA Alternatjves
7 Preliminary ID of ARARs
8 Identify Data Net:ds
9 Prepare Work Plan. SAP, HASP
10 Monthly Reporting
II Fidd Investigation
11.1 Phase I
11.2 Phase II
11.3 Phase III
12 Baseline Risk Assessment
12.I Contaminant ID/DQO Development
12.2 Exposure Assessment
12.3 Toxicity Assessmenc
12.4 Risk Characterization
12.5 Environmental Assessment
12.6 Draft Baseline Risk Assessment
12.7 Final Baseline Risk Assessment
13 Feasibility Study
14 Fate and Transpon
15 Site Characterization Summaries
16 Draft RI Repon
17 RI Comments
18 Final RI Repon
19 Additional Requiremencs/Meetings
Task Mgmt & QA
WORK ASSIGNMENT TOTALS
* * * Confidential * * *
Prepared by Roy F. Weston, Inc.,
for U.S. EPA Contracl 68-\\'9-0057
(]) (2)
LABOR -LABOR -
PROFESSION A ;. SUPPORT
HRS $ HRS $
8 702 3 66
48 3,083 10 222
20 1,295 2 44
40 2,261 2 44
40 2,426 2 44
28 1,764 2 44
24 1,423 2 44
30 1,861 2 44
177 10,254 35 775
30 2,173 IO 222
714 35,714 IO 222
185 10,281 10 222
750 38,491 10 222
95 5,014 10 222
81 4,180 10 222
17 982 10 222
45 2,389 10 222
90 4,619 6 133
45 2,448 10 222
45 2,448 IO 222
674 34,538 75 1,661
201 10,350 15 332
220 12,092 40 886
800 39,350 75 1,661
190 11,366 40 886
400 22,130 40 886
110 6,349 20 443
140 9,223 25 554
5,247 279,206 496 10,986
...
(3) (4) (5) (6) (7) (8)
INT. EXT. SUB TOTAL
TRAVEL ODC'S ODC'S POOL G&A COST
$ $ $ $ 18.1% $
14 0 10 0 143 936
0 III 30 0 603 4,049
1,283 0 80 0 489 3,192
0 134 5 0 418 2,862
0 0 10 0 449 2,929
0 0 20 0 331 2,159
0 0 20 0 269 1,756
0 0 10 0 346 2,261
0 536 155 0 2,023 13,744
0 7 5 0 434 2,840
7,205 81 I 2,250 12,630 8,21 I 67,043
2,413 231 850 9,000 2,490 25,487
8,081 1,878 3,200 40,625 9,044 101,540
0 324 100 0 965 6,624
0 100 100 0 814 5,416
0 84 100 0 236 1,623
0 164 0 0 472 3,246
803 327 100 0 1,023 7,005
0 254 160 0 512 3,595
0 174 160 0 512 3,515
61 1,670 225 0 6,600 44,756
61 1,260 250 0 1,989 14,242
61 1,590 250 0 2,404 17,283
61 3,650 650 0 7,548 52,921
0 I ,390 200 0 2,253 16,094
0 2,650 650 0 4,281 30,597
122 1,085 400 0 1,323 9,722
0 0 0 0 1,769 11,545
20,166 18,428 9,990 62,255 57,951 458,982
TABLE 3-1
WORK ASSIGNMENT SUMMARY
(9) (10)
BASE
FCCM FEE
$ 3.0%
17 12
71 47
32 64
49 32
53 35
39 26
31 21
41 27
236 160
51 34
794 814
233 254
858 913
I 12 77
94 65
26 20
56 37
104 96
58 43
58 43
775 517
229 160
279 192
880 599
263 178
494 344
147 I 12
209 137
6,289 5,060
--
Work Plan
Reasor Chemical
Revision: 0
-
Date: January 13, 1997
age 0 P 3 f 6
(11) (12) (I 3) (14)
POOL SUB AWARD POOL SUB TOTAL
BASE FEE FEE AW. FEE WITH
2.5% 7.0% 2.5% ALL FEES
0 65 0 1,029
0 276 0 4,443
0 223 0 3,511
0 191 0 3,135
0 205 0 3,222
0 151 0 2,375
0 123 0 1,931
0 158 0 2,488
0 925 0 15,064
0 198 0 3,124
316 3,752 316 73,035
225 I ,138 225 27,563
1,016 4,133 1,016 109,475
0 441 0 7,254
0 372 0 5,947
0 108 0 1,777
0 216 0 3,555
0 467 0 7,673
0 234 0 3,929
0 234 0 3,849
0 3,016 0 49,064
0 909 0 15,540
0 1,099 0 18,852
0 3,449 0 57,848
0 1,029 0 17,565
0 1,956 0 33,392
0 605 0 10,586
0 808 0 12,699
1,556 26,481 1,556 499,924
---
REASOR CHEMICAL
WBS
Task/ACTIVITY
I Scoping Meeting
2 Work Plan Memo
3 Site Visit
4 Existing Data Evaluation
5 Develop Conceptual Site Model
6 Preliminary RA Alternatives
7 Preliminary ID of ARARs
8 Identify Data Needs
9 Prepare Work Plan, SAP, HASP
10 Monthly Reporting
II Field Invc:stigation
II.I Phase I
11.2 Phase II
11.3 Phase III
12 Baseline Risk Assessment
12.1 Contaminant ID/DQO Development
12.2 Exposure Assessment
12.3 Toxicity Assessment
12.4 Risk Characterization
12.5 Environmental Assessment
12.6 Draft Baseline Risk Assessment
12.7 Final Baseline Risk Assessment
13 Feasibility Scudy
14 Fate and Transport
15 Site Characterization Summaries
16 Draft RI Report
17 RI Comments
18 Final RI Report
19 Adtli1ional Requirements/Meelings
50 Task Mgmt & QA
WORK ASSIGNMENT TOTALS
* * * Confidential * * *
Preparetl by Roy F. Weston, Inc.,
for U.S. EPA Contract 68-W9.0057
P4
$! !0.69 /hr
HRS $
4 443
2 221
0 0
0 0
0 0
0 0
0 0
0 0
10 1,107
5 553
3 332
3 332
4 443
3 332
I Ill
I Ill
2 221
I Ill
4 443
4 443
10 1,107
I Ill
5 553
IO l,!07
IO I,!07
IO l,!07
10 1,107
30 3,321
133 14,722
-
P3 P2 Pl
$64.77 /hr $48.28 /hr $36.01 /hr
HRS $ HRS $ HRS $
4 259 0 0 0 0
40 2,591 4 193 0 0
20 1,295 0 0 0 0
20 1,295 20 966 0 0
30 1,943 10 483 0 0
25 1,619 3 145 0 0
16 1,036 8 386 0 0
25 1,619 5 241 0 0
80 5,182 65 3,138 IO 360
25 1,619 0 0 0 0
250 16,192 211 10,187 250 9,003
101 6,542 40 1,931 41 1,476
272 17,617 274 13,229 200 7,202
22 1,425 60 2,897 10 360
20 1,295 50 2,414 10 360
6 389 10 483 0 0
13 842 20 966 10 360
24 1,554 50 2,414 15 540
9 583 22 1,062 IO 360
9 583 22 1,062 IO 360
180 11,659 354 17,091 130 4,681
80 5,182 60 2,897 60 2,161
100 6,477 75 3,621 40 1,440
200 12,954 320 15,450 230 8,282
110 7,125 50 2,414 20 720
200 12,954 JOO 4,828 90 3,241
40 2,591 40 1,931 20 720
50 3,239 35 1,690 0 0
1,971 127,662 1,908 92,118 1,156 41,628
TABLE 3-2
WESTON DIRECT LABOR & OVERHEAD
-
T2 TOTAL PROF
$38.94 /hr LOE
HRS $ HRS $
0 0 8 702
2 78 48 3,083
0 0 20 1,295
0 0 40 2,261
0 0 40 2,426
0 0 28 1,764
0 0 24 1,423
0 0 30 1,861
12 467 177 10,254
0 0 30 2,173
0 0 714 35,714
0 0 185 10,281
0 0 750 38,491
0 0 95 5,014
0 0 81 4,180
0 0 17 982
0 0 45 2,389
0 0 90 4,619
0 0 45 2,448
0 0 45 2,448
0 0 674 34,538
0 0 201 I0,350
0 0 220 12,092
40 1,558 800 39,350
0 0 190 11,366
0 0 400 22,130
0 0 110 6,349
25 974 140 9,223
79 3,076 5,247 279,206
Work Plan
Reasor Chemical
Revision: 0
Dale: January 13, 1997
6 Page 4 of
C2 TOTAL
..
$22.15 /hr LABOR
HRS $ HRS $
3 66 II 768
IO 222 58 3,305
2 44 22 1,340
2 44 42 2,305
2 44 42 2,470
2 44 30 1,808
2 44 26 1,467
2 44 32 1,905
35 775 212 11,029
IO 222 40 2,394
IO 222 724 35,936
10 222 195 10,503
10 222 760 38,712
10 222 105 5,235
10 222 91 4,402
10 222 27 1,204
10 222 55 2,611
6 133 96 4,752
10 222 55 2,669
10 222 55 2,669
75 1,661 749 36,199
15 332 216 10,682
40 886 260 12,978
75 1,661 875 41,012
40 886 230 12,252
40 886 440 23,016
20 443 130 6,792
25 554 165 9,776
496 10,986 5,743 290,192
-
- ----
REASOR CHEMICAL
WBS
Task/ACTIVITY
I Scoping Meeting
2 Work Plan Memo
3 Site Visi1
4 Existing Data Evaluation
5 Develop Conceptual Si1e Model
6 Preliminary RA Alternatives
7 Preliminary ID of ARARs
8 Identify Data Needs
9 Prepare Work Plan, SAP, HASP
10 Monthly Reponing
II Fit:ld Investigation
II.I Phase I
11.2 Phase II
11.3 Phase III
12 Baseline Risk Assessment
12.1 Cumaminant ID/DQO Development
12.2 Exposure Assessmem
12.3 Toxicity Assessment
12.4 Risk Characterization
12.5 Environmental Assessmenc
12.6 Draft Baseline Risk Assessment
12.7 Fina! Baseline Risk Assessment
13 Feasibility Study
14 Fate and Transpon
15 Site Characterization Summaries
16 Draft RI Report
17 RI Comments
18 Final RI Report
19 Additional Requirements/Meetings
Task Mgmt & QA
WORK ASSIGNMENT TOTALS
* * * Confidential * * *
Prepared by Roy F. Weston, Inc.,
for U.S. EPA Contract 68-\1/9-0057
-
PER DIEM-UM
Wilmington
$86.00 /day
days
0 0
0 0
2 172
0 0
0 0
0 0
0 0
0 0
0 0
0 0
59 5,074
12 1,032
75 6,450
0 0
0 0
0 0
0 0
2 172
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
150 12,900
---·-
RENTAL CAJ
AUTO
MILEAGE
$50.00 /day I $0.31/mile
days $miles $
0
0
I
0
0
0
0
0
0
0
22
7
32
0
0
0
0
2
0
0
0
0
0
0
0
0
0
0
64
0 45 14
0 0 0
50 120 37
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
1,100 JOO 31
350 100 31
1,600 100 31
0 0 0
0 0 0
0 0 0
0 0 0
100 100 31
0 0 0
0 0 0
0 120 37
0 120 37
0 120 37
0 120 37
0 0 0
0 0 0
0 200 62
0 0 0
3,200 1,245 386
TABLE 3-3
TRAVEL EXPENSES
Work Plan
Reasor Chemical
Revision: 0
Date: January 13, 1997
Page 5 of 6
TOLLS/
PARKING
AIR FARE J
Atl-Wilmington
$12.00 /day $500.°? flrip J
days $ tnps
0 0 0 0
0 0 0 0
2 24 2 1,000
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 2 1,000
0 0 2 1,000
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 I 500
0 0 0 0
0 0 0 0
2 24 0 0
2 24 0 0
2 24 0 0
2 24 0 0
0 0 0 0
0 0 0 0
5 60 0 0
0 0 0 0
15 180 7 3,500
--
TOTAL
TRAVEL
$
14
0
1,283
0
0
0
0
0
0
0
7,205
2,413
8,081
0
0
0
0
803
0
0
61
61
61
61
0
0
122
0
20,166
-11111111 --
REASOR CHEMICAL
WBS
TaslJACTJVlTY
I Scoping Meeting
2 Worl.: Plan Memo
3 Site Visit
4 Existing Dau Evaluation
5 Develop Cooccptual Site Model
6 Preliminary RA Alternatives
7 Preliminary ID of ARARs
8 ldcmify Data Need$
9 Prepare Worl.: Plan, SAP, 1-lASP
10 Momhly Reporting
II Field Investigation
II.I P!wo I
11.2 Phase JI
11.3 Phase l!I
ll Baseline Risk Assessmem
12.1 Cont.imin.:im ID/DQO O.,,·dopmcm
12.:! Exposure Asscssmcm
12.3 Toxicicr Assessment
12.4 Risk Charac1criz.a1ion
12.5 Enviwnmcntal Ancssment
12.6 Draf1 Baseline Risk Assessment
12.7 Firol Baseline Risl Asscssmeru
13 Feasibili1y Study
14 Fa1c and Transport
15 Site Charactcriz.;uion Summaries
16 Draf1 RI Rcpon
17 RI Comments
18 Fi11al RI Repon
19 Addi1iona! Rcquircmen15/Mectings
Tasl Mgm1 & QA
WORK ASSIGNMENT TOTALS
• • • Confidential • • •
Prepared by Ro)" F. Wes1on. lrr:.,
for U.S. EPA Comrac:1 68-W9-0057
--
EQUIP
RENTAL
s
0
0
0
0
0
0
0
0
0
0
200
0
I ,"'1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1,1100
- --
REPRO!,
I
CAD RENTAl COPYIN
StJ 1hr S0.07 /page
hn s "' s
0 0 0 0
2 26 JOO 21
0 0 0 0
0 0 1,000 70
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
ll 156 2,000 '"' 0 0 100 7
30 ,., JOO 21
10 130 JOO 21
10 130 ,oo 28
0 0 50 ' 0 0 50 ' 0 0 50 ' 0 0 50 4
0 0 100 7
0 0 200 14
0 0 200 14
"' 520 5,000 350
30 390 1,000 70
50 650 2,00J ''° 100 1,300 5,000 350
50 650 2,0CXl 140
100 I.JOO 5,000 350
50 650 500 35
0 0 0 0
48' 6,292 25,600 1,792
- - --
SUBTOTAL
COMPUTEF INTERNAL MISC. MAIU
SS.00 /hr ODCS MATERIALS SHIP.
hn s s s s
0 0 0 0 0
' .. 111 0 20
0 0 0 75 0
8 .. ll4 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
30 2,0 536 75 30
0 0 7 0 0
25 200 811 1.000 250
10 80 231 250 100
15 120 1,678 2,550 150
,o 320 324 0 0
12 96 100 0 0
10 80 " 0 0
20 160 , .. 0 0
,o 320 327 0 0
lO 240 254 0 60
20 160 "' 0 60
100 800 1,670 0 125
100 1100 1,260 0 so
100 800 1,590 0 50
250 2,000 3,650 100 200
75 "" 1,390 0 100
125 um 2.650 100 200
50 "" 1,085 0 150
0 0 0 0 0
1,1168 8,544 18.428 4,150 1,545 -
TABLE 3-4
OTIIER DIRECT COSTS
-
Worl Plan
Reasor Chemical
Revision: 0
Date: January 13, 1997
Page 6 of 6
SUBTOTAL
EXTERNAL
TELE. ODC'S
s '
10 10
10 30
5 80
5 5
IO 10
20 20
20 20
IO 10
50 155
5 5
1,000 2,250
500 850
500 3,200
100 100
100 100
100 100
0 0
100 100
100 160
100 160
100 225
200 250
200 250
350 650
100 200
350 650
250 ""
0 0
4,295 9,990
- - --
GEOPROBE &
DRILLING TOTAL
SUBCONTRACT LABORATORY ooc·s
' s
0 0 10
0 0 141
0 0 80
0 0 ll9
0 0 10
0 0 20
0 0 20
0 0 IO
0 0 691
0 0 ll
12,630 0 15,691
9,000 0 10,081
36,575 4,050 45,703
0 0 424
0 0 200
0 0 '" 0 0 , ..
0 0 427
0 0 414
0 0 334
0 0 1,895
0 0 1,510
0 0 '·"° 0 0 4,300
0 0 1,590
0 0 ),JOO
0 0 1.485
0 0 0
58,205 90,673
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
This document was prepared by Roy F. Weston, Inc., expressly for EPA It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
SECTION 7
PROJECT MEETINGS
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 7
Revision: O
Date: January 1997
WESTON will attend and participate in meetings with EPA, PRPs, federal, state, and local
officials as specified by the RPM. We have assumed that six (6) project meetings will be
attended throughout the project for cost estimating purposes. Five of these meetings are assumed
to be held at the U.S. EPA Region IV office in Atlanta, Georgia. The third meeting was
assumed to be for a public meeting in Castle Hayne, North Carolina. WESTON will maintain
records of these meetings and prepare a summary report of the meetings to include participants,
key issues discussed, decisions reached, and action items.
NOR/I<:\ WP\ 04400\ 077\ WP MA TOO 1. WP 7-1 12/98
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
SECTION 8
PROGRESS REPORTS
Dratt RI/FS Work Plan
Reasor Chemical Company Site
Section: 8
Revision: O
Date: January 1997
WESTON will prepare monthly status reports describing the financial and technical progress of
the report. The monthly status report will include, at a minimum, the following items:
I.
2.
3.
4.
5.
6.
7.
Identification of site and activity.
Status of activities and work completed during the month.
Percentage of the project work completed.
Difficulties encountered and corresponding actions taken in an attempt to rectify
problems.
Activities planned for the following month.
Expenditures, including fee and direct labor hours expended for the month. The financial
report will include a breakdown of hours expended for each task. Individual employee
names charging to the project will be included in the invoice which coincides with the
same time frame as the monthly status report. This invoice is submitted to the EPA
contracting office.
Cumulative expenditures, including fee, cumulative direct hours expended to date, and
percent expended of the total obligated dollar and level of effort (LOE) amount.
NOR/I<:\ WP\ 04400\ 077\ WP MA TOO\ .WP 8-1 12/86
I
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I
I
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This document was prepared by Roy F. Weston, Inc., expressly for EPA. It shall not be released or disclosed, in whole or in part,
without the express written permission of EPA.
8.
Draft RI/FS Work Plan
Reasor Chemical Company Site
Section: 8
Revision: 0
Date: January 1997
Projection of expenditures leading to project completion with an explanation of any
significant variation from the project budget.
NOR/K: \ WP\ 04400\ 077\ WPMAT00 1. WP 8-2 12/96
•'"-NQ,RTH SUPERFUND ID:404-562-8788 JAN 30'97
FAX TRANSMISSION
U.S. ENVIl{ONMENTAL PROTECTION AGENCY
REGION4
100 ALABAMA STREET, S.W.
ATLANTA, GA 30303-3014
1-800-435-9233
404•562-8788 (.l<'AX)
Date: I-3d A/7
7:46 No.001 P.01
Pages: ,2 inclucllng this cover shceL
From: AiM.1..( ,,&,wa::-..-> '
Subject;,_(_,_4 ..... L.-M>-=="-'&l'v::........::.f..J..::.~=-:=d)=------------
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