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TABLE OF CONTENTS 1.0. INTRODUCTION AND SCOPE OF WORK I 1.1. SITE LOCATION I 1.2. GEOLOGY AND HYDROGEOLOGY 1 1.3. SITE HISTORY 2 2.0. PRIOR SITE ASSESSMENTS 4 2.1. PENTACHLOROPHENOL . .. . . . .. 4 2.1.1. Parking Area . . . . . . . .. . . . . . .... .. . . . . . . ... . . ... . . . . 4 2.1.2. "Penta Tank!. . . . . . .. 4 2.2. STEAM CLEANING AND WESTERN DITCH AREAS . . .. . ... . . . . . . .. .... . . . . . . .. . . . . 5 2.2.1. South Steam Cleaning Area . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . .. . . . 5 2.2.2. North Steam Cleaning Area . . . ... . . .. . . . . . . . . . . . . . . . .. . . . . . . . ... . . . . . . . . . . . . 5 2.2.3. Westera Drainage Ditch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . ... .. . . 6 2-3. SEPTIC TANKS . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . ... . . 7 2.3.1. Finger Joints Building Septic Leach Field . . . . .. . . . . . . . . . . . . . . . . . .. . . . . .. . . . . . . . 7 2.3.2. Millwork Building Septic Leach Field . . . . .. . . . . . .. . . . . . . . . . .. . ... . . . . . . . .. . . . 7 2.3.3. Maintenance Building Septic Leach Field . . . . . . . . . . . . .. . . . .. . . . . .. . . . . ... . . . . . . 8 2.4. WASH-DOWN AREAS 8 2.4.1. Ray Bond Building . . .. . . .. . . . . .. . . . . . . . . . . . . . . . . . . . . . . .. . . .. . ... . .. . ... . . 9 2.4.2. Millwork Building . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ... . ... . . . .. . . . . 9 2.4.3. Priming Building. .. . .. . . .I . .. . .... . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . ... . . 9 2.4.4. Saw Filing Room . . . . . . . . . . . ... . . . . . . . . ... . . . . . . . . . . .. . . . . . . .. . . . . . . . .. . . . . 9 2.4.5. Drain Sump North ofthe 44x120 Storage Bulding . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . to 2.5. STORM WATER RETENTION PONDS . . . . . . . . .. . . . . . .. . . . . . . . . . . . . . . . . . . . . . . .. . . . 10 2.5.1. North Storm Water Basin . . . . . ... . .. . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . 10 2.5.2. South and Central Stinin Water Basins . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . .. . lo 2.6. BURN PITS AND FORMER TEEPEE STRUCTURE INCINERAT( R . . . . . . .. . . . . . . . . . . . . 11 2.6.1. Burn Pits and Former Teepee Area Assessment Status . . . . .. .. . . . . . . . . . . . . . . . . ... . 11 3.0. PROCEDURES ....... .............. ................ .... ....... . .. ........I.. ......... 12 3.1. DRILLING. . . . . . . . . . . . . . . . .. . . . .. . . .. . .. . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . .. . . 13 3.2. SOIL SAMPLE COLLECTION . . . . . . . .. .. . . . . . . . .. . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . 13 3.3. SOIL SAMPLE LABORATORY ANALYSIS .. . . . . .. . . . . . . .. . . . . . . . .. . . . . . . . . . . . . . . 14 3.4. GROUNG WATER SAMPLE COLLECTION .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 15 3.5. GROUND WATER SAMPLE ANALYSIS .. . . . . . . . .. . . . . . . . . . . . . . . . . . . .. . . . . .. . . . . . . 16 3.6. EQUIPMENT DECONTAMINATION. .. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .. . . 17 3.7. LOGGING . . . . . . . . . . . . . . . .. . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .. . . 18 4.0. FINDINGS .......... ....... .. ............... ................... . ............. ........ is 4.1. LITHOLOGY 18 4.2. ANALYTICAL RESULTS OF SOIL SAMPLES . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . is 4.2.1. Former Track Parking Area . . . . .. . . . . . . . . . . . . . .. . .. . . . . . . . .. . .. . . . . . . . . . . . . 18 4.2.2. Former South Steam Cleaning Area.. . . . . . . .. . . . . .. . . . . . . . . . .. . ... . . . . . . . .. . . 19 4.2.3. Ray Bond Area"Penta Tank"and Wash-Down Area . . . .. . . . . ... . ... . .. .. . . . . . . 19 4.2.4. West Ditch Area . . . .. . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . .. .. .. . . . . . . . . . . 19 4.2.5. Former Cover Plain Wash-Down Area and Former Teepee S1 nicture . . ... . . . . . .. . . . . 19 4.3. ANALYTICAL RESULTS OF GROUND WATER SAMPLES . .. . . . . . .. . . .. . . . . . . . . . . . . 20 5.0. SUMMARY AND CONCLUSIONS ........... ..... .. .. .... ..... ... .... ... .... .. ......... 21 6.0. RECOMMENDATIONS ....... ...... ............ . .. ....... ... .. . .. .................... 24 7,0, LIMITATIONS ... .... . ...... .. ... .. 25 Advanced Gc.Enviro=entaI,Inc.