0000046 APR n? 1987 I'S. EPA, NtbMifi V WASTE MMUfiEMENT DIVISION [HFiaMfN! BPANOI EPA Region 5 Records^Ctr. 227906 REPORT BLASLAND & BOUCK ENGINEERS, P.O. Phase 1 Progress Report Winston Thomas Facility & Bennett's Dump Westinghouse Electric Corporation Waste Technology Services Division Waltz Mil! Site, Pennsylvania 1037 January 1987 PHASE I PROGRESS REPORT WINSTON THOMAS FACILITY AND BENNETT'S DUMP WESTINCHOUSE ELECTRIC CORPORATION WASTE TECHNOLOGY SERVICES DIVISION WALTZ MILL SITE, PENNSYLVANIA JANUARY 1987 APR 07 1987 BLASLAND & BOUCK ENGINEERS, P.C. 5793 WIDEWATERS PARKWAY BOX 66 SYRACUSE, NEW YORK 13214 TABLE OF CONTENTS WINSTON THOMAS FACILITY BENNETT'S DUMP APPENDICES WINSTON THOMAS BLASLAND & BOUCK ENGINEERS, P.O. PHASE 1 PROGRESS REPORT WINSTON THOMAS FACILITY WESTINCHOUSE ELECTRIC CORPORATION WASTE TECHNOLOGY SERVICES DIVISION WALTZ MILL SITE, PENNSYLVANIA JANUARY 1987 BLASLAND & BOUCK ENGINEERS, P.C. 5793 WIDEWATERS PARKWAY BOX 66 SYRACUSE, NEW YORK 13214 TABLE OF CONTENTS PAGE SECTION I INTRODUCTION 1 SECTION II PHASE 1 RESULTS 2 A. Geology and Hydrogeology Review 3 1. Site Location 3 2. Topography 3 3. Unconsolidated Deposits 5 1. Bedrock Geology 9 5. Hydrology and Hydrogeology 16 B. Review of Previous Subsurface and Analytical Investigations 18 C. Aerial Photograph Analysis, Review of Topographic Maps 18 D. Site Reconnaissance 21 SECTION III PHASE 2 WORK PROGRAM 22 A. Boring/Coring Installations 22 1. Selection of Locations 22 2. Proposed Depths 23 B. Subsequent Phase 2 Work Task 26 SECTION IV REFERENCES 27 LIST OF TABLES PACE TABLE WT/BD-1 Lithologic Characteristics of Mississippian Age Bedrock 12 TABLE WT-2 Chronological Summary of Previous Work Tasks 19 TABLE WT-3 Selected Boring/Coring Locations 24 LIST OF FIGURES PAGE FIGURE WT-1 Site Plan H FIGURE WT-2 Soils Map 7 FIGURE WT-3 General Geologic Cross Section, A-A1 10 FIGURE WT-4 Bedrock Geology 11 FIGURE WT-5 Lineaments and Pre-Facility Features 15 FIGURE WT-6 Selected Boring/Coring Locations 25 PHASE 1 PROGRESS REPORT WINSTON THOMAS FACILITY SECTION I - INTRODUCTION Phase 1 of the Supplemental Hydrogeologic Investigation for the Winston Thomas Facility Site began within 14 days of approval of the Plan (July 1986) by the parties of the Consent Decree. The goals of the Phase 1 work efforts were to: 1. establish a basic understanding of the historic, geologic and hydrogeologic site conditions prior to executing Phase 2 work efforts; 2. define the locations and depths of Phase 2 boring/corings; and 3. provide a presentation of the information gathered in items 1. and 2. above in report format to the parties of the Consent Decree. The Phase 1 Progress Report is organized into four sections. Section I, Introduction, includes introductory remarks and sets forth a description of the contents of this document. Section II, Phase 1 Results, presents the results of the work completed in August through October 1986 in accordance with Tasks 1.1 to 1.4 as presented in the Winston Thomas Facility Supplemental Hydrogeologic Investigation Plan (1). Section III, Phase 2 Work Program, describes the proposed boring/coring locations and depths for the upcoming work efforts of Phase 2. Section IV, References, provides a list of all references and other pertinent data cited in this document. -1- SECTION II - PHASE 1 RESULTS The Phase 1 work efforts have included the following: 1. a literature review to evaluate the geologic and hydrogeologic characteristics of both the unconsolidated and consolidated units beneath the site prior to Phase 2 drilling efforts; 2. an evaluation of aerial photographs, topographic maps and previous work efforts to delineate the nature and extent of geomorphic and land use changes that have occurred such that potential source areas and contaminant migration pathways are defined; 3. an assessment of aerial photographs and topographic maps to delineate karst and structural features on and adjacent to the site that may indicate subsurface solution features or fracture zones in the bedrock beneath the site; 4. a review of the limits of the site(s) delineated by previous work efforts such that all drilling activities will be performed outside these limits; and 5. an inspection of the selected Phase 2 drilling work areas to assess drilling rig access and karst, structural and/or land use features. The results of these work efforts are presented in four sections: Section A, Geology and Hydrogeology which is divided into five subsections: 1) Site Location, 2) Topography, 3) Unconsolidated Deposits, 4) Bedrock Geology and 5) Hydrology and Hydrogeology; Section B, Review of Previous -2- Subsurface and Analytical Investigations; Section C, Aerial Photograph Analysis, Review of Construction Drawings and Topographic Maps; and Section D, Site Reconnaissance. A. Geology and Hydrogeology Review 1. Site Location The Winston Thomas Facility (WTF) Site is located in central Monroe County, Indiana, about 2.5 miles south of Bloomington, in the west half of the southwest quarter of Section 16, Range 1 West, Township 8 North. This facility was used as the Bloomington municipal sewage treatment plant from 1933 to 1982 when it was replaced by a facility currently in use at Dillman Road. The WTF site consists of a 17-acre (approximately) tertiary sewage treatment lagoon, two abandoned sludge lagoons, three areas of sludge drying beds, four digesters, a trickling filter and several buildings. The WTF and surrounding study area are depicted on Figure WT-1 . 2. Topography The WTF lies at an elevation between 670 feet and 690 feet above mean sea level (msl). The topography of the site as depicted on the 1980 United States Geological Survey (USCS) Bloomington and Clear Creek 7.5' Topographic Quadrangles and a 1976 Abrams Aerial Survey Topographic Map is nearly level to moderately sloping; however, steep slopes occur on the berm edges of the tertiary lagoon. The site is -3- WT- I LEGEND HORIZONTAL LIMITS OF SITE TO BE REMOVED . PHASE I SITE STUDY AREA MONITORING WELL LOCATION AS PRO- « POSED IN SUPPLEMENTAL HYDROGEO- LOGIC INVESTIGATION PLAN, MAY 1986 * * CROSS-SECTION LINE WINSTON THOMAS FACILITY SITE PLAN located in the level north-south trending valley of Clear Creek. Clear Creek flows in s southern direction along the western edge of the study area. 3. Unconsolidated Deposits Information on the unconsolidated units at the WTF study area was reviewed to: a. determine the presence, extent and and characteristics of any native undisturbed soils in which monitoring wells should be installed in Phase 2; b. define the location and characteristics of the man-disturbed or man-deposited units to define contaminant source areas; and c. evaluate the potential for the soils and other materials to provide pathways for contaminant migration. At the WTF Site, unconsolidated deposits consist of native undisturbed soils, man-disturbed soils and man-deposited units. Typically, the United Stated Department of Agriculture (USDA) places the latter two categories together into a unit known as the Udorthents loam complex due to non-field verification of their mapping procedures. The Udorthents loam complex covers approximately 90 percent of the 35 acre study area including the site (2). In the remainder of the area. -5- primarily in the northwest corner and the western edge of the WTF N study area, the native soil types consist of the Raymond silt loam and Caneyville silt loam, respectively. A soil map of the study area is provided on Figure WT-2. a) Man-Disturbed Soils and Man-Deposited Units The man-disturbed soils and man-deposited units include the tertiary lagoon deposits within the lagoon and the abandoned lagoons as well as the area in which the treatment plant buildings, roadways and facilities were constructed where soil disturbance may have occurred. The tertiary lagoon berm (see Figure WT-1) consists of silty clay. Sludge has been deposited in the lagoon from the sewage treatment process. This sludge overlies a one to two feet thick clay liner that was emplaced during the construction of the lagoon in 1967 (3, 4). The sludge is a contaminant source area; however, the low permeability of the liner and the berm that surround the source may mitigate contaminant migration. Further details on the soils and sludge encountered in the lagoon are provided in Appendix A, a compendium of data generated at the WTF from previous work efforts. Soils encountered in borings in the abandoned lagoons are described as clays mixed with sludge; however, sand, silty sand -6- WT-2 SOILS MAP-WINSTON THOMAS FACILITY LEGEND APPROXIMATE SCALE: PHASE I STUDY AREA 5OO* 0 5OO' SOURCE SOIL SURVEY OF MONROE COUNTY, USD.*., 1981 •LASIAND * tOUCX -7- ENO4NEERS, P.O. and silty clay layers mixed with weathered bedrock (3, 5) were present in some of the borings. Bedrock was encountered at depths of approximately eight feet in six of the abandoned lagoon borings. Further details on these soils and sludge found in these lagoons are provided in Appendix A. b. Native Undisturbed Soils The native soils at the study area are the Haymond silt loam, the Caneyville silt loam and Clear Creek streambed deposits. The Haymond silt loam (Hd) is a level, deep, well-drained soil formed from silty alluvium of the floodplains. Permeability values are reported to range from 0.6 to 2.0 inches per hour (2). The Caneyville silt loam (Cad) is a strongly sloping (12-18 percent) well-drained soil on the sides of uplands. This soil is formed from limestone residium with the limestone bedrock at a depth of approximately 3 feet. Permeability values range from 0.2 to 0.6 inches per hour (2). According to research work performed by Purdue and Indiana Universities the floodplain material is a silt loam (6) probably the Haymond silt loam. Clear Creek streambed deposits were described as principally sand (6).