Appendix D Geotechnical

Transcription

1 USACE JACKSONVIE DISTRICT Appendix D Geotechnical LEE COUNTY GASPARIA SHORE PROTECTION PROJECT 934 REPORT June 216

2 TABLE OF CONTENTS 1 Background Regional Geology Local Geology Native Beach General Existing Beach Sampling and Analysis Sand sources Sand Search Investigations Compatibility of the Sand source with the Beaches References... 7 INDEX OF FIGURES Figure 1. The Florida Peninsula, including the present coastline, previous sea level stands, and the extent of the carbonate platform INDEX OF TABLES Table 1: Gasparilla Island Beach Characteristics (214)... 3 Table 2: Gasparilla Island Composite Beach Characteristics (2)... 5 Table 3: Gasparilla Island Sand Source Compatibility... 6 INDEX OF ATES Plate B - 1. Overview: Gasparilla Shoal sand source and project area location Plate B - 2. Boring locations for Gasparilla Shoal APPENDIX Sand Source Boring Logs and Laboratory Testing Results... 1 Appendix D, Geotechnical. Lee County, Gasparilla Island Shore Protection Project 934 Report Page i of 171

3 1 BACKGROUND The Gasparilla Island portion of the Lee County Shore Protection Project is located within part of a 4. mile segment of critically eroded beach along the southern Gulf Shore of Gasparilla Island, including portions of Gasparilla Island State Park (R-16.5 and R-22.5 to R-26). Historically, sand from the maintenance dredging of Boca Grande Pass was placed along the southern portion of this area in 1981, 1993 and The U.S. Army Corps of Engineers (USACE) completed a General Reevaluation Report (GRR) for Gasparilla and Estero Islands in January 2. The final design included a beach restoration from R1 to R26 using approximately 92, cy of sand from an offshore sand source. The beach restoration project was completed in April of 27 with placement of 1,72,781 cy of sand, and the design consisted of a beach berm at elevation +5 ft NGVD sloping to +4.2 ft NGVD to protect the existing dune and upland development. This report includes a description of the regional and local geology of Lee County, a sediment characterization of the existing beach, and a preliminary sand source evaluation. The existing beach characteristics are summarized in Tables 1 and 2. The compatibility of the existing beach and the proposed sand source is summarized in Table 3. An overview map of the fill placement site and proposed sand source are depicted on Plate 1. The proposed sand source and existing core borings are depicted on Plate 2. Boring logs and available laboratory results are attached in the Appendix. Additional borings may be needed within the sand source during the design phase of this project. 1.1 REGIONAL GEOLOGY The Florida Peninsula occupies a portion of a much larger geologic unit called the Florida Plateau. Deep water in the Gulf of Mexico is separated from the deep water of the Atlantic Ocean by this partially submerged platform nearly 5 miles long and 25 to 45 miles wide. Since the Mesozoic Era, approximately 2 million years BP (before present), the plateau has been alternately dry land or covered by shallow seas. During that time up to 2, feet of carbonate and marine sediments were deposited in central and southern Florida. Either following or concurrent with one of the later periods of emergence, there appears to have been a tilting of the Florida Plateau about its longitudinal axis. The west coast was partially submerged, as indicated by the wide estuaries and offshore channels, while the east coast was correspondingly elevated, showing the characteristics of an emergent coastline (Randazzo and Jones, 1997). During the last million years, a series of four glacial periods, or ice ages, brought about significant changes in sea level, as shown in Figure 1. As a result of these sea level fluctuations, Appendix D, Geotechnical. Lee County, Gasparilla Island Shore Protection Project 934 Report Page 1 of 171

4 the Florida peninsula was again covered and uncovered by shallow seas. Following the first glacial period, sea level rose approximately 27 feet above its present level. Dry land on the Florida peninsula was then restricted to a few small islands along the central Florida ridge and in northeast Florida. Figure 1. The Florida Peninsula, including the present coastline, previous sea level stands, and the extent of the carbonate platform. About 1, years ago, the last glacial period began. Sea level fell to approximately 3 feet below its present level and the Florida Plateau emerged as dry land. Approximately 15, years ago, sea level began its most recent rise towards present sea level (Shackleton, 1987). Sea level rose at an average rate of 3 feet per 1, years. About 7, years ago, the rate of sea level rise slowed when the sea level was about 3 feet below its present level (Smith et al., 211). It was at this most recent slowing of sea level rise that the modern barrier islands of southeast peninsular Florida formed. 1.2 LOCAL GEOLOGY Lee County, in southwest Florida, covers approximately 83 square miles. Its boundaries are formed by Charlotte County on the north, Hendry and Collier Counties on the east, and Collier County on the south. The shoreline of Lee County consists of a series of barrier bars broken by numerous inlets. The shoreline is further characterized by sandy barrier islands backed by shallow bays, marshes, and mangrove areas. The coastal plain in the vicinity of San Carlos Bay and Estero Bay is of low relief and low elevation. The Caloosahatchee, Peace, and Myakka Rivers all drain the estuary system. The barrier islands of Lee County are believed to have been initially formed around 4,4 years ago and prograded seaward. A reduction in the rate of Holocene sea level rise at that time, combined with a local sand supply and pre-existing topography, helped in the location and formation of the present barrier island chain. Appendix D, Geotechnical. Lee County, Gasparilla Island Shore Protection Project 934 Report Page 2 of 171

5 Gasparilla Island lies west of the Charlotte Harbor estuary system and is bound to the north and south by Gasparilla Pass and Boca Grande Pass, respectively. Gasparilla Island is a 6.7 mile long narrow barrier island with a relatively stable northern shoreline and increasing erosion towards the southern end. High southerly net sediment transport rates along Gasparilla Island result in the well-developed ebb-tidal delta system of the Boca Grande Pass. 2 NATIVE BEACH 2.1 GENERAL This area has been subjected to numerous beach fill projects using sand derived from offshore borrow sources and periodic maintenance dredging of Boca Grande Pass prior to authorization of the federal project. As such, the sedimentology of these samples reflects the presence of fill in addition to what has accumulated naturally on the beach. In response to storm damage sustained in 212, approximately 457,824 cubic yards of material were dredged from an offshore sediment source and placed between Florida Department of Environmental Protection (FDEP) reference monuments R-11 and R-25 on Gasparilla Island. Dredging operations commenced on 2 October 213 and ceased on 3 January EXISTING BEACH SAMING AND ANALYSIS The following existing beach information was taken from Permit File No JC, Gasparilla Island Beach Restoration Project, Lee County, Post-Fill Sampling Report, prepared by the USACE on February 24, 214. Fourteen (14) post-fill beach samples were collected on 14 January 214 within the fill berm between R-11 and R-25 from a depth of approximately eight (8) inches below surface (Table 1). The test results characterized the placed material as wellgraded, medium grained sand with an average visual shell of 39.5 percent, ranging from 26.3 to 55.4 percent. The average grain size of the composite post-fill beach was.47 mm (1.13 phi), and the average standard deviation (sorting) was 1.34 phi. The amount of fines passing the #23 sieve averaged.33 percent. The typical dry Munsell color of the sand was 2.5Y 8/1, or white. Monument Table 1: Gasparilla Island Beach Characteristics (214) Mean (mm) Mean (phi) Sorting (phi) Percent Fines (23) Percent Visual Shell USCS Munsell Color R SP 2.5Y 8/1 R SP 2.5Y 8/1 R SP 2.5Y 8/1 Appendix D, Geotechnical. Lee County, Gasparilla Island Shore Protection Project 934 Report Page 3 of 171

6 Monument Mean (mm) Mean (phi) Sorting (phi) Percent Fines (23) Percent Visual Shell USCS Munsell Color R SP 2.5Y 8/1 R SP 2.5Y 8/1 R SP 2.5Y 8/1 R SP 2.5Y 8/1 R SP 2.5Y 8/1 R SP 2.5Y 8/1 R SP 2.5Y 8/1 R SP 2.5Y 8/1 R SP 2.5Y 8/1 R SP 2.5Y 8/1 R SP 2.5Y 8/1 Composite SP 2.5Y 8/1 The following existing beach information was taken from Lee County Shore Protection Project Gasparilla Island Segment: Sand Source Report, prepared for Lee County, Florida, by Humiston and Moore Engineers in August 2. USACE (214) noted the pre-construction (existing) beach condition that was reported by Humiston and Moore in 2; those samples were collected before federal participation in the project (Table 2). Beach samples were collected along 4 profiles. These profiles were located at R-1, R-17, R-24, and south of 1 st Street (between R-15 and R-16). Samples were collected at intervals from the edge of vegetation to the Mean Low Water (MLW) line to obtain a composite that would be representative of the dune, berm, and beach face. A total of 14 samples were collected. A composite sample was created from the individual samples at R-1 and R-17 due to the variation from erosional processes at 1 st Street (very coarse) and aeolian processes at R-24 (very fine). The composite sample classifies the sediments as clean, poorly-graded, fine to medium grained quartz sands with a mean grain size of.54 mm or.9 phi, and a standard deviation of 1.6 phi. The percentage of fines passing the # 23 sieve is percent. Visual shell contents and Munsell Color values were not reported. Appendix D, Geotechnical. Lee County, Gasparilla Island Shore Protection Project 934 Report Page 4 of 171

7 Table 2: Gasparilla Island Composite Beach Characteristics (2) Monument R-1, R-17 Sample Elevation Dune Berm Beach Face MLW line Mean (mm) Mean (phi) Visual Shell Percent Percent Fines (# 23) Sorting (phi) Munsell Color.54.9 ND % 1.6 ND Both data sets indicated that the beach consisted of fine to medium-grained sand. The existing beach sands are poorly sorted, which likely reflects the inclusion of coarse-grained shell fragments, a common occurrence in the nearshore, sub-tidal zone. 3 SOURCES 3.1 SEARCH INVESTIGATIONS One sand source, Gasparilla Shoal, was identified by the project sponsor as the preferred source of borrow material for the remainder of the extended project authorization. The sand source lies in water depths of approximately 6 to 18 feet, centered about 1.85 miles offshore the southern tip of Gasparilla Island, Lee County, and south of FDEP reference monument R-25 and adjacent to Boca Grande Pass. Rectangular in shape, the sand source encompasses approximately 425 acres. The vicinity map, shown on Plate B-1, illustrates the location of the sand source. Plate B-2 shows the locations of previously collected vibracores. Lee County collected 38 vibracores within the proposed sand source in 2 and performed grain size analyses on selected samples. USACE collected four (4) vibracores in 1996 and 33 vibracores in 214 and performed grain size analysis on selected samples. The thickness of beach-compatible material ranges from 3 to 15 feet, with an average thickness of approximately 8 feet. Conservative dredge depths and a spring 216 survey were used to estimate an available volume of approximately 3.5 million cubic yards. This volume of material is sufficient to cover the estimated project need of 624,5 cubic yards and 617,2 cubic yards for the next and future nourishment, which will cover the remainder of the project life. The material within the proposed sand source is compatible with the beach placement area and is in compliance with FDEP s Sand Rule guidelines below. Florida Administrative Code 62B-41.7(2)(j) requires that beach fill meets the following requirements: Carbonate or quartz with a particle size between.62 and 4.76mm Appendix D, Geotechnical. Lee County, Gasparilla Island Shore Protection Project 934 Report Page 5 of 171

8 <5% silt passing the #23 sieve <5% gravel sized shell retained on the #4 sieve Fill material must be free of foreign matter, debris, toxic material Fill material shall be similar in color, composition, and grain size distribution 4 COMPATIBILITY OF THE SOURCE WITH THE BEACHES Based on the sediment classifications shown on the logs, laboratory testing was performed on most of the vibracore borings. However, limited statistical analyses were available for the vibracores collected prior to 214 within the proposed sand source, Gasparilla Shoal. A review of the available geotechnical data for the proposed sand source indicates that the material is compatible with the beach placement area. The mean grain size of the sand from the 33 analyzed vibracores in 214 was.47 mm with a standard deviation of Table 3 shows a comparison of the 2 native beach data and 214 existing beach data with the available sand source data. Additionally, the sand source sediment color was described typically as light gray to gray (1 YR 7/1 to 1 YR 6/1, respectively). Based on these descriptions the sand source color is compatible with USACE s (214) beach characterization of white sand (2.5Y 8/1). Table 3: Gasparilla Island Sand Source Compatibility Monument Mean (mm) Mean (phi) Sorting (phi) % Fines (23) Percent Shell (Visual) Munsell Color Native Beach (2) ND ND Existing Beach (214) Y 8/1 Gasparilla Shoal Sand Source YR 7/1 Appendix D, Geotechnical. Lee County, Gasparilla Island Shore Protection Project 934 Report Page 6 of 171

9 5 REFERENCES Randazzo, A. F., Jones, D.S., The Geology of Florida. University Press of Florida, Gainesville, FL, 4. Shackleton, N.J., 1987, Oxygen isotopes, ice volume and sea level. Quaternary Science Review, Vol. 6, p Smith, D.E., Harrison, S., Firth, C.R., Jordan, J.T., 211. The early Holocene sea level rise. Quaternary Science Reviews 3, Appendix D, Geotechnical. Lee County, Gasparilla Island Shore Protection Project 934 Report Page 7 of 171

10 ATES Project Area " Legend # Fill Placement Site Cultural Resource Gasparilla Shoal R-1 R-11 R-12 R-13 R-14 R-15 R-16 R-17 R-18 R-19 R-2 R-21 R-22 R-23 R-24 R-25 Plate B Miles Geotechnical Drawings LEE COUNTY GASPARIA SHORE PROTECTION PROJECT 934 REPORT Dsn by: Dwn by: Ckd by: JLC JLC JLC Miles Dated: 24JUN16 DEPARTMENT OF THE ARMY JACKSONVIE DISTRICT, CORPS OF ENGINEERS JACKSONVIE, FLORIDA ATE NO. B-1 Plate B - 1. Overview: Gasparilla Shoal sand source and project area location. Appendix D, Geotechnical. Lee County, Gasparilla Island Shore Protection Project 934 Report Page 8 of 171

11 Legend P USACE Vibracore Borings (214) " Cultural Resource Avoidance Buffer Gasparilla Shoal Sand Source Boundary VB-GAS14-3 VB-GAS14-33 VB-GAS14-27 VB-GAS14-29 VB-GAS14-31 VB-GAS14-32 VB-GAS14-2 VB-GAS14-21 VB-GAS14-26 VB-GAS14-16 VB-GAS14-19 VB-GAS14-14 VB-GAS14-18 VB-GAS14-25 VB-GAS14-17 VB-GAS14-28 VB-GAS14-15 VB-GAS14-24 VB-GAS14-13 VB-GAS14-5 VB-GAS14-12 VB-GAS14-23 VB-GAS14-4 VB-GAS14-11 VB-GAS14-3 VB-GAS14-1 VB-GAS14-2 VB-GAS14-9 VB-GAS14-1 VB-GAS14-8 VB-GAS14-22 VB-GAS14-7 VB-GAS Miles Geotechnical Drawings LEE COUNTY GASPARIA SHORE PROTECTION PROJECT 934 REPORT Dsn by: Dwn by: Ckd by: JLC JLC JLC Miles Dated: 24JUN16 DEPARTMENT OF THE ARMY JACKSONVIE DISTRICT, CORPS OF ENGINEERS JACKSONVIE, FLORIDA ATE NO. B-2 Plate B - 2. Boring locations for Gasparilla Shoal. Appendix D, Geotechnical. Lee County, Gasparilla Island Shore Protection Project 934 Report Page 9 of 171

12 APPENDIX Sand Source Boring Logs and Laboratory Testing Results Appendix D, Geotechnical. Lee County, Gasparilla Island Shore Protection Project 934 Report Page 1 of 171

13 DRIING LOG DIVISION South Atlantic 1. PROJECT Lee County SPP, Gasparilla Segment Boring Designation VB-GAS14-1 INSTAATION Jacksonville District 9. SIZE AND TYPE OF BIT See Remarks 1. COORDINATE SYSTEM/DATUM HORIZONTAL SHEET 1 OF 2 SHEETS 2. BORING DESIGNATION VB-GAS14-1 LOCATION COORDINATES X = 559,61 Y = 862, MANUFACTURER'S DESIGNATION OF DRI AUTO HAMMER MANUAL HAMMER 3. DRIING AGENCY Corps of Engineers - CESAJ CONTRACTOR FILE NO TOTAL SAMES DISTURBED 4 UNDISTURBED (UD) 4. NAME OF DRIER Lester Gaughf 5. DIRECTION OF BORING INCLINED DEG. FROM BEARING 13. TOTAL NUMBER CORE BOXES 14. ELEVATION GROUND WATER 15. BORING STARTED COMETED 6. THICKNESS OF OVERBURDEN 7. DEPTH DRIED INTO ROCK 8. TOTAL DEPTH OF BORING N/A N/A 11.2 Ft. 16. ELEVATION TOP OF BORING 17. TOTAL RECOVERY FOR BORING N/A 18. SIGNATURE AND TITLE OF INSPECTOR Stephanie Setser, P.E., Geotechnical Engineer ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE., poorly-graded, mostly fine to coarse-grained sand-sized shell, some fine to medium-grained sand-sized quartz, trace silt, strong reaction with HCl, 1Y 6/1 greenish gray (SP) 1 At 4. Ft., mostly sand to gravel-sized shell, some fine-grained sand-sized quartz At 4.9 Ft., silt seam (1"), poorly-graded with silt, mostly fine-grained sand-sized quartz, some sand to gravel-sized shell, few silt, strong reaction with HCl, 1Y 5/1 greenish gray (SP-SM) At 5.4 Ft., little fine to medium-grained sand-sized shell, silty, mostly fine-grained sand-sized quartz, little silt, trace shell, strong reaction with HCl, 1Y 5/1 greenish gray (SM) At 7. Ft., few medium-grained sand-sized shell, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, strong reaction with HCl, N 7/ light gray (SP-SM), poorly-graded, mostly fine-grained sand-sized quartz, trace silt, strong reaction with HCl, N 7/ light gray (SP) , silty, mostly fine-grained sand-sized quartz, little silt, strong reaction with HCl, 1Y 5/1 greenish gray (SM) NOTES: 1. USACE Jacksonville is the custodian for these original files. 2. Soils are field visually classified in accordance with the Unified Soils System. Abbreviations: SAJ FORM 1836 JUN 2 (Continued) 15

14 DRIING LOG (Cont. Sheet) PROJECT Lee County SPP, Gasparilla Segment LOCATION COORDINATES X = 559,61 Y = 862,93 Boring Designation VB-GAS14-1 INSTAATION SHEET 2 Jacksonville District OF 2 SHEETS COORDINATE SYSTEM/DATUM HORIZONTAL ELEVATION TOP OF BORING ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. 3. Boring terminated in CH and core was pushed to depth, repeated with same results over multiple cores. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE Laboratory Testing Results SAME SAME LABORATORY ID DEPTH CLASSIFICATION /.8 SP* 2 4./4.3 SP* 3 5./5.3 SP-SM* 4 6./6.3 SP-SM* *Lab visual classification based on gradation curve 5. Additional Laboratory Testing 2 1 Percent Visual Shell 2 Percent Visual Shell 3 Percent Visual Shell 4 Percent Visual Shell 25 3 SAJ FORM 1836-A JUN 2 35

15 DRIING LOG DIVISION South Atlantic 1. PROJECT Lee County SPP, Gasparilla Segment Boring Designation VB-GAS14-2 INSTAATION Jacksonville District 9. SIZE AND TYPE OF BIT See Remarks 1. COORDINATE SYSTEM/DATUM HORIZONTAL SHEET 1 OF 2 SHEETS 2. BORING DESIGNATION VB-GAS14-2 LOCATION COORDINATES X = 56,62 Y = 862,3 11. MANUFACTURER'S DESIGNATION OF DRI AUTO HAMMER MANUAL HAMMER 3. DRIING AGENCY Corps of Engineers - CESAJ CONTRACTOR FILE NO TOTAL SAMES DISTURBED 4 UNDISTURBED (UD) 4. NAME OF DRIER Lester Gaughf 5. DIRECTION OF BORING INCLINED DEG. FROM BEARING 13. TOTAL NUMBER CORE BOXES 14. ELEVATION GROUND WATER 15. BORING STARTED COMETED 6. THICKNESS OF OVERBURDEN 7. DEPTH DRIED INTO ROCK 8. TOTAL DEPTH OF BORING N/A N/A 15.8 Ft. 16. ELEVATION TOP OF BORING 17. TOTAL RECOVERY FOR BORING N/A 18. SIGNATURE AND TITLE OF INSPECTOR, ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE., poorly-graded, mostly fine-grained sand-sized quartz, some fine to medium-grained sand-sized shell, trace silt, strong reaction with HCl, 1Y 6/1 greenish gray (SP) At 2. Ft., little fine to medium-grained sand-sized shell, poorly-graded, mostly sand to gravel-sized shell, little fine-grained sand-sized quartz (SP), poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, few fine-grained sand-sized shell, strong reaction with HCl, 1Y 5/1 greenish gray (SP-SM), poorly-graded, mostly fine-grained sand-sized quartz, little fine-grained sand-sized shell, trace silt, strong reaction with HCl, 1Y 5/1 greenish gray (SP) At 6.6 Ft., 1" silt seam At 7. Ft., few fine to medium-grained sand-sized shell At 7.6 Ft., 1Y 6/1 greenish gray At 9.3 Ft., trace shell, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, trace shell, strong reaction with HCl, 1Y 5/1 greenish gray (SP-SM), silty, mostly fine-grained sand-sized quartz, some silt, few medium-grained sand-sized shell, strong reaction with HCl, 1Y 5/1 greenish gray (SM) At 11. Ft., trace shell At 11.9 Ft., few medium-grained sand-sized shell 1 At 13.7 Ft., little silt, trace shell SAJ FORM 1836 JUN 2 (Continued) 15

16 DRIING LOG (Cont. Sheet) PROJECT Lee County SPP, Gasparilla Segment LOCATION COORDINATES X = 56,62 Y = 862,3 Boring Designation VB-GAS14-2 INSTAATION SHEET 2 Jacksonville District OF 2 SHEETS COORDINATE SYSTEM/DATUM HORIZONTAL ELEVATION TOP OF BORING ELEV. DEPTH 15.8 LEGEND CLASSIFICATION OF MATERIALS % REC. At 15. Ft., few fine to medium-grained sand-sized shell BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE 15 NOTES: Abbreviations: 1. USACE Jacksonville is the custodian for these original files. 2. Soils are field visually classified in accordance with the Unified Soils System. 3. Laboratory Testing Results SAME SAME LABORATORY ID DEPTH CLASSIFICATION /.8 SP* 2 4./4.3 SP-SM* 3 6./6.3 SP* 4 7./7.3 SP* 2 *Lab visual classification based on gradation curve 4. Additional Laboratory Testing 1 Percent Visual Shell 2 Percent Visual Shell 3 Percent Visual Shell 4 Percent Visual Shell 25 3 SAJ FORM 1836-A JUN 2 35

17 DRIING LOG DIVISION South Atlantic 1. PROJECT Lee County SPP, Gasparilla Segment Boring Designation VB-GAS14-3 INSTAATION Jacksonville District 9. SIZE AND TYPE OF BIT See Remarks 1. COORDINATE SYSTEM/DATUM HORIZONTAL SHEET 1 OF 2 SHEETS 2. BORING DESIGNATION VB-GAS14-3 LOCATION COORDINATES X = 56,485 Y = 862, MANUFACTURER'S DESIGNATION OF DRI AUTO HAMMER MANUAL HAMMER 3. DRIING AGENCY Corps of Engineers - CESAJ CONTRACTOR FILE NO TOTAL SAMES DISTURBED 3 UNDISTURBED (UD) 4. NAME OF DRIER Lester Gaughf 5. DIRECTION OF BORING INCLINED DEG. FROM BEARING 13. TOTAL NUMBER CORE BOXES 14. ELEVATION GROUND WATER 15. BORING STARTED COMETED 6. THICKNESS OF OVERBURDEN 7. DEPTH DRIED INTO ROCK 8. TOTAL DEPTH OF BORING N/A N/A 16.1 Ft. 16. ELEVATION TOP OF BORING 17. TOTAL RECOVERY FOR BORING N/A 18. SIGNATURE AND TITLE OF INSPECTOR, ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE., poorly-graded, mostly fine-grained sand-sized quartz, some fine to medium-grained sand-sized shell, trace silt, strong reaction with HCl, 1Y 5/1 greenish gray (SP) 1 At 3.9 Ft., some medium to coarse-grained sand-sized shell, 1Y 6/1 greenish gray 2 At 5. Ft., little fine-grained sand-sized shell, 1Y 5/1 greenish gray At 8.1 Ft., few medium-grained sand-sized shell, silty, mostly fine-grained sand-sized quartz, little silt, trace shell, strong reaction with HCl, 1Y 6/1 greenish gray (SM) 1 At 11.3 Ft., few fine-grained sand-sized shell At 13.2 Ft., little sand to gravel-sized shell SAJ FORM 1836 JUN 2 (Continued) 15

18 DRIING LOG (Cont. Sheet) PROJECT Lee County SPP, Gasparilla Segment LOCATION COORDINATES X = 56,485 Y = 862,471 Boring Designation VB-GAS14-3 INSTAATION SHEET 2 Jacksonville District OF 2 SHEETS COORDINATE SYSTEM/DATUM HORIZONTAL ELEVATION TOP OF BORING ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE NOTES: Abbreviations: 1. USACE Jacksonville is the custodian for these original files. 2. Soils are field visually classified in accordance with the Unified Soils System. 3. Boring terminated in rock and core was pushed to depth, repeated with same results over multiple cores. 4. Laboratory Testing Results 2 SAME SAME LABORATORY ID DEPTH CLASSIFICATION /.8 SP* 2 4./4.3 SP* 3 6./6.3 SP* *Lab visual classification based on gradation curve 5. Additional Laboratory Testing 1 Percent Visual Shell 2 Percent Visual Shell 3 Percent Visual Shell 25 3 SAJ FORM 1836-A JUN 2 35

19 DRIING LOG DIVISION South Atlantic 1. PROJECT Lee County SPP, Gasparilla Segment Boring Designation VB-GAS14-4 INSTAATION Jacksonville District 9. SIZE AND TYPE OF BIT See Remarks 1. COORDINATE SYSTEM/DATUM HORIZONTAL SHEET 1 OF 2 SHEETS 2. BORING DESIGNATION VB-GAS14-4 LOCATION COORDINATES X = 56,874 Y = 862, MANUFACTURER'S DESIGNATION OF DRI AUTO HAMMER MANUAL HAMMER 3. DRIING AGENCY Corps of Engineers - CESAJ CONTRACTOR FILE NO TOTAL SAMES DISTURBED 3 UNDISTURBED (UD) 4. NAME OF DRIER Lester Gaughf 5. DIRECTION OF BORING INCLINED DEG. FROM BEARING 13. TOTAL NUMBER CORE BOXES 14. ELEVATION GROUND WATER 15. BORING STARTED COMETED 6. THICKNESS OF OVERBURDEN 7. DEPTH DRIED INTO ROCK 8. TOTAL DEPTH OF BORING N/A N/A 17.4 Ft. 16. ELEVATION TOP OF BORING 17. TOTAL RECOVERY FOR BORING N/A 18. SIGNATURE AND TITLE OF INSPECTOR, ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE., poorly-graded, mostly fine-grained sand-sized quartz, some fine to medium-grained sand-sized shell, trace silt, strong reaction with HCl, 1Y 6/1 greenish gray (SP) , poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, few fine to medium-grained sand-sized shell, strong reaction with HCl, 1Y 5/1 greenish gray (SP-SM), poorly-graded, mostly fine-grained sand-sized quartz, trace silt, trace shell, strong reaction with HCl, N 7/ light gray (SP) At 5. Ft., few fine-grained sand-sized shell, 1Y 6/1 greenish gray At 6.2 Ft., trace shell At 7.2 Ft., some fine to medium-grained sand-sized shell 8.2, silty, mostly fine-grained sand-sized quartz, little silt, strong reaction with HCl, 1Y 5/1 greenish gray (SM) 1 At 1.5 Ft., few medium-grained sand-sized shell At 12.9 Ft., some silt, little sand to gravel-sized shell SAJ FORM 1836 JUN 2 (Continued) 15

20 DRIING LOG (Cont. Sheet) PROJECT Lee County SPP, Gasparilla Segment LOCATION COORDINATES X = 56,874 Y = 862,662 Boring Designation VB-GAS14-4 INSTAATION SHEET 2 Jacksonville District OF 2 SHEETS COORDINATE SYSTEM/DATUM HORIZONTAL ELEVATION TOP OF BORING ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE At 16.5 Ft., few fine to medium-grained sand-sized shell, 1" sand seam At 16.7 Ft., little sand to gravel-sized shell, discontinue sand seam NOTES: 1. USACE Jacksonville is the custodian for these original files. Abbreviations: 2. Soils are field visually classified in accordance with the Unified Soils System Upper 6' free fall of barrel. Difficulty removing the core barrel after drilling 4. Laboratory Testing Results SAME SAME LABORATORY ID DEPTH CLASSIFICATION /.8 SP* 2 2.5/2.8 SP-SM* 3 4.5/4.8 SP* *Lab visual classification based on gradation curve 5. Additional Laboratory Testing 25 1 Percent Visual Shell 2 Percent Visual Shell 3 Percent Visual Shell 3 SAJ FORM 1836-A JUN 2 35

21 DRIING LOG DIVISION South Atlantic 1. PROJECT Lee County SPP, Gasparilla Segment Boring Designation VB-GAS14-5 INSTAATION Jacksonville District 9. SIZE AND TYPE OF BIT See Remarks 1. COORDINATE SYSTEM/DATUM HORIZONTAL SHEET 1 OF 2 SHEETS 2. BORING DESIGNATION VB-GAS14-5 LOCATION COORDINATES X = 561,329 Y = 862, MANUFACTURER'S DESIGNATION OF DRI AUTO HAMMER MANUAL HAMMER 3. DRIING AGENCY Corps of Engineers - CESAJ CONTRACTOR FILE NO TOTAL SAMES DISTURBED 3 UNDISTURBED (UD) 4. NAME OF DRIER Lester Gaughf 5. DIRECTION OF BORING INCLINED DEG. FROM BEARING 13. TOTAL NUMBER CORE BOXES 14. ELEVATION GROUND WATER 15. BORING STARTED COMETED 6. THICKNESS OF OVERBURDEN 7. DEPTH DRIED INTO ROCK 8. TOTAL DEPTH OF BORING N/A N/A 14.2 Ft. 16. ELEVATION TOP OF BORING 17. TOTAL RECOVERY FOR BORING N/A 18. SIGNATURE AND TITLE OF INSPECTOR, ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE., poorly-graded, mostly sand to gravel-sized shell, little fine to medium-grained sand-sized quartz, trace silt, strong reaction with HCl, 1Y 8/1 light greenish gray (SP) 1 1.8, poorly-graded, mostly fine to medium-grained sand-sized quartz, some sand to gravel-sized shell, 1Y 7/1 light greenish gray (SP) At 3.1 Ft., little sand to gravel-sized shell At 5. Ft., mostly fine-grained sand-sized quartz, little fine-grained sand-sized shell, trace silt, 1Y 6/1 greenish gray 2 5 At 7.5 Ft., little fine to medium-grained sand-sized shell At 8.2 Ft., trace shell At 9.5 Ft., some sand to gravel-sized shell, occasional 1" diameter shell encountered 3 1 At 1.9 Ft., little sand to gravel-sized shell At 11.8 Ft., few fine-grained sand-sized shell At 12.3 Ft., trace shell , silty, mostly fine-grained sand-sized quartz, some sand to gravel-sized shell, little silt, strong reaction with HCl, 1Y 8/1 light greenish gray (SM) Abbreviations: SAJ FORM 1836 JUN 2 (Continued) 15

22 DRIING LOG (Cont. Sheet) PROJECT Lee County SPP, Gasparilla Segment LOCATION COORDINATES X = 561,329 Y = 862,849 Boring Designation VB-GAS14-5 INSTAATION SHEET 2 Jacksonville District OF 2 SHEETS COORDINATE SYSTEM/DATUM HORIZONTAL ELEVATION TOP OF BORING ELEV. DEPTH LEGEND NOTES: CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE USACE Jacksonville is the custodian for these original files. 2. Soils are field visually classified in accordance with the Unified Soils System. 3. Laboratory Testing Results SAME SAME LABORATORY ID DEPTH CLASSIFICATION /.8 SP* 2 5.5/5.8 SP* 3 1./1.3 SP* 2 *Lab visual classification based on gradation curve 4. Additional Laboratory Testing 1 Percent Visual Shell 2 Percent Visual Shell 3 Percent Visual Shell 25 3 SAJ FORM 1836-A JUN 2 35

23 DRIING LOG DIVISION South Atlantic 1. PROJECT Lee County SPP, Gasparilla Segment Boring Designation VB-GAS14-6 INSTAATION Jacksonville District 9. SIZE AND TYPE OF BIT See Remarks 1. COORDINATE SYSTEM/DATUM HORIZONTAL SHEET 1 OF 2 SHEETS 2. BORING DESIGNATION VB-GAS14-6 LOCATION COORDINATES X = 559,689 Y = 861, MANUFACTURER'S DESIGNATION OF DRI AUTO HAMMER MANUAL HAMMER 3. DRIING AGENCY Corps of Engineers - CESAJ CONTRACTOR FILE NO TOTAL SAMES DISTURBED 2 UNDISTURBED (UD) 4. NAME OF DRIER Lester Gaughf 5. DIRECTION OF BORING INCLINED DEG. FROM BEARING 13. TOTAL NUMBER CORE BOXES 14. ELEVATION GROUND WATER 15. BORING STARTED COMETED 6. THICKNESS OF OVERBURDEN 7. DEPTH DRIED INTO ROCK 8. TOTAL DEPTH OF BORING N/A N/A 13.8 Ft. 16. ELEVATION TOP OF BORING 17. TOTAL RECOVERY FOR BORING N/A 18. SIGNATURE AND TITLE OF INSPECTOR, ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE., poorly-graded, mostly fine to medium-grained sand-sized quartz, little sand to gravel-sized shell, trace silt, strong reaction with HCl, 1Y 6/1 greenish gray (SP) At 1.3 Ft., trace shell 1 At 1.9 Ft., little medium-grained sand-sized shell At 2.6 Ft., little fine to medium-grained sand-sized shell At 4.2 Ft., mostly fine-grained sand-sized quartz, some sand to gravel-sized shell, 1Y 7/1 light greenish gray SAJ FORM 1836 JUN 2, poorly-graded with silt, mostly fine to medium-grained sand-sized quartz, few silt, few medium-grained sand-sized shell, strong reaction with HCl, 1Y 5/1 greenish gray (SP-SM), poorly-graded, mostly fine to medium-grained sand-sized quartz, trace silt, strong reaction with HCl, 1Y 6/1 greenish gray (SP), silty, mostly fine-grained sand-sized quartz, little silt, trace shell, strong reaction with HCl, 1Y 5/1 greenish gray (SM) At 8.9 Ft., some silt SILT, inorganic-l, few fine-grained sand-sized quartz, strong reaction with HCl, 1Y 5/1 greenish gray (ML), poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, strong reaction with HCl, 1Y 6/1 greenish gray (SP-SM), silty, mostly fine-grained sand-sized quartz, little silt, strong reaction with HCl, 1Y 6/1 greenish gray (SM) At 1.9 Ft., 1" silt seam At 11.1 Ft., 1" silt seam At 11.9 Ft., 1" silt seam Abbreviations: (Continued) 1 15

24 DRIING LOG (Cont. Sheet) PROJECT Lee County SPP, Gasparilla Segment LOCATION COORDINATES X = 559,689 Y = 861,59 Boring Designation VB-GAS14-6 INSTAATION SHEET 2 Jacksonville District OF 2 SHEETS COORDINATE SYSTEM/DATUM HORIZONTAL ELEVATION TOP OF BORING ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. At 12.3 Ft., 2" silt seam, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, strong reaction with HCl, 1Y 6/1 greenish gray (SP-SM) BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE 15 NOTES: 1. USACE Jacksonville is the custodian for these original files. 2. Soils are field visually classified in accordance with the Unified Soils System. 3. Laboratory Testing Results SAME SAME LABORATORY ID DEPTH CLASSIFICATION /.8 SP* 2 5.5/5.8 SP* 2 *Lab visual classification based on gradation curve 4. Additional Laboratory Testing 1 Percent Visual Shell 2 Percent Visual Shell 25 3 SAJ FORM 1836-A JUN 2 35

25 DRIING LOG DIVISION South Atlantic 1. PROJECT Lee County SPP, Gasparilla Segment Boring Designation VB-GAS14-7 INSTAATION Jacksonville District 9. SIZE AND TYPE OF BIT See Remarks 1. COORDINATE SYSTEM/DATUM HORIZONTAL SHEET 1 OF 2 SHEETS 2. BORING DESIGNATION VB-GAS14-7 LOCATION COORDINATES X = 56,51 Y = 861, MANUFACTURER'S DESIGNATION OF DRI AUTO HAMMER MANUAL HAMMER 3. DRIING AGENCY Corps of Engineers - CESAJ CONTRACTOR FILE NO TOTAL SAMES DISTURBED 4 UNDISTURBED (UD) 4. NAME OF DRIER Lester Gaughf 5. DIRECTION OF BORING INCLINED DEG. FROM BEARING 13. TOTAL NUMBER CORE BOXES 14. ELEVATION GROUND WATER 15. BORING STARTED COMETED 6. THICKNESS OF OVERBURDEN 7. DEPTH DRIED INTO ROCK 8. TOTAL DEPTH OF BORING N/A N/A 15.2 Ft. 16. ELEVATION TOP OF BORING 17. TOTAL RECOVERY FOR BORING N/A 18. SIGNATURE AND TITLE OF INSPECTOR, ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE., poorly-graded, mostly fine-grained sand-sized quartz, some fine to medium-grained sand-sized shell, trace silt, strong reaction with HCl, 1Y 7/1 light greenish gray (SP) At 1.5 Ft., little fine to medium-grained sand-sized shell At 2.2 Ft., trace shell 1 5 At 6.3 Ft., little sand to gravel-sized shell At 6.8 Ft., some medium to coarse-grained sand-sized shell, 1Y 6/1 greenish gray , poorly-graded, mostly sand to gravel-sized shell, little fine-grained sand-sized quartz, trace silt, strong reaction with HCl, 1Y 8/1 light greenish gray (SP), poorly-graded with silt, mostly fine-grained sand-sized quartz, few fine-grained sand-sized shell, few silt, strong reaction with HCl, 1Y 7/1 light greenish gray (SP-SM) At 11.2 Ft., 1/2" silt seam At 11.9 Ft., 1/2" silt seam SAJ FORM 1836 JUN 2, silty, mostly fine-grained sand-sized quartz, little silt, trace shell, strong reaction with HCl, 1Y 5/1 greenish gray (SM) (Continued) 15

26 DRIING LOG (Cont. Sheet) PROJECT Lee County SPP, Gasparilla Segment LOCATION COORDINATES X = 56,51 Y = 861,815 Boring Designation VB-GAS14-7 INSTAATION SHEET 2 Jacksonville District OF 2 SHEETS COORDINATE SYSTEM/DATUM HORIZONTAL ELEVATION TOP OF BORING ELEV. DEPTH 15.2 LEGEND NOTES: CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD Abbreviations: REMARKS BLOWS/ 1 FT. N-VALUE USACE Jacksonville is the custodian for these original files. 2. Soils are field visually classified in accordance with the Unified Soils System. 3. Rock in the shoe 4. Laboratory Testing Results SAME SAME LABORATORY ID DEPTH CLASSIFICATION /.8 SP* 2 7./7.3 SP* 3 1.5/1.8 SP* /11.8 SP-SM* 2 *Lab visual classification based on gradation curve 5. Additional Laboratory Testing 1 Percent Visual Shell 2 Percent Visual Shell 3 Percent Visual Shell 4 Percent Visual Shell 25 3 SAJ FORM 1836-A JUN 2 35

27 DRIING LOG DIVISION South Atlantic 1. PROJECT Lee County SPP, Gasparilla Segment Boring Designation VB-GAS14-8 INSTAATION Jacksonville District 9. SIZE AND TYPE OF BIT See Remarks 1. COORDINATE SYSTEM/DATUM HORIZONTAL SHEET 1 OF 2 SHEETS 2. BORING DESIGNATION VB-GAS14-8 LOCATION COORDINATES X = 56,5 Y = 861, MANUFACTURER'S DESIGNATION OF DRI AUTO HAMMER MANUAL HAMMER 3. DRIING AGENCY Corps of Engineers - CESAJ CONTRACTOR FILE NO TOTAL SAMES DISTURBED 3 UNDISTURBED (UD) 4. NAME OF DRIER Lester Gaughf 5. DIRECTION OF BORING INCLINED DEG. FROM BEARING 13. TOTAL NUMBER CORE BOXES 14. ELEVATION GROUND WATER 15. BORING STARTED COMETED 6. THICKNESS OF OVERBURDEN 7. DEPTH DRIED INTO ROCK 8. TOTAL DEPTH OF BORING N/A N/A 12. Ft. 16. ELEVATION TOP OF BORING 17. TOTAL RECOVERY FOR BORING N/A 18. SIGNATURE AND TITLE OF INSPECTOR, ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE., poorly-graded, mostly fine-grained sand-sized quartz, little fine to medium-grained sand-sized shell, trace silt, strong reaction with HCl, 1Y 7/1 light greenish gray (SP) At.9 Ft., few medium-grained sand-sized shell At 1.3 Ft., some fine to coarse-grained sand-sized shell, 1Y 8/1 light greenish gray At 1.9 Ft., mostly fine-grained sand-sized quartz, 1Y 7/1 light greenish gray 1 At 3.5 Ft., some fine to medium-grained sand-sized shell At 4.4 Ft., little fine to medium-grained sand-sized shell, poorly-graded with silt, mostly fine-grained sand-sized quartz, little medium-grained sand-sized shell, few silt, strong reaction with HCl, 1Y 6/1 greenish gray (SP-SM), silty, mostly fine-grained sand-sized quartz, little silt, trace shell, strong reaction with HCl, 1Y 5/1 greenish gray (SM) 3 5 At 8.3 Ft., some silt At 9.3 Ft., little medium-grained sand-sized shell 1 At 1.5 Ft., trace limestone 12. NOTES: Abbreviations: 1. USACE Jacksonville is the custodian for these original files. 2. Soils are field visually classified in accordance with the Unified Soils System. SAJ FORM 1836 JUN 2 (Continued) 15

28 DRIING LOG (Cont. Sheet) PROJECT Lee County SPP, Gasparilla Segment LOCATION COORDINATES X = 56,5 Y = 861,992 Boring Designation VB-GAS14-8 INSTAATION SHEET 2 Jacksonville District OF 2 SHEETS COORDINATE SYSTEM/DATUM HORIZONTAL ELEVATION TOP OF BORING ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. 3. Laboratory Testing Results BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE 15 SAME SAME LABORATORY ID DEPTH CLASSIFICATION /.8 SP* 2 3.5/3.8 SP* 3 5./5.3 SP-SM* *Lab visual classification based on gradation curve 4. Additional Laboratory Testing 1 Percent Visual Shell 2 Percent Visual Shell 3 Percent Visual Shell SAJ FORM 1836-A JUN 2 35

29 DRIING LOG DIVISION South Atlantic 1. PROJECT Lee County SPP, Gasparilla Segment Boring Designation VB-GAS14-9 INSTAATION Jacksonville District 9. SIZE AND TYPE OF BIT See Remarks 1. COORDINATE SYSTEM/DATUM HORIZONTAL SHEET 1 OF 2 SHEETS 2. BORING DESIGNATION VB-GAS14-9 LOCATION COORDINATES X = 56,891 Y = 862, MANUFACTURER'S DESIGNATION OF DRI AUTO HAMMER MANUAL HAMMER 3. DRIING AGENCY Corps of Engineers - CESAJ CONTRACTOR FILE NO TOTAL SAMES DISTURBED 4 UNDISTURBED (UD) 4. NAME OF DRIER Lester Gaughf 5. DIRECTION OF BORING INCLINED DEG. FROM BEARING 13. TOTAL NUMBER CORE BOXES 14. ELEVATION GROUND WATER 15. BORING STARTED COMETED 6. THICKNESS OF OVERBURDEN 7. DEPTH DRIED INTO ROCK 8. TOTAL DEPTH OF BORING N/A N/A 14.2 Ft. 16. ELEVATION TOP OF BORING 17. TOTAL RECOVERY FOR BORING N/A 18. SIGNATURE AND TITLE OF INSPECTOR, ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE..4, poorly-graded, mostly fine to medium-grained sand-sized quartz, little fine-grained sand-sized shell, strong reaction with HCl, 1Y 7/1 light greenish gray (SP), poorly-graded, mostly sand to gravel-sized shell, little fine-grained sand-sized quartz, trace silt, 1Y 8/1 light greenish gray (SP) 1 4.1, poorly-graded, mostly fine-grained sand-sized quartz, some fine to medium-grained sand-sized shell (SP) 2 5 At 5.6 Ft., few fine-grained sand-sized shell, 1Y 7/1 light greenish gray 8.3 At 7.8 Ft., 1Y 6/1 greenish gray, poorly-graded, mostly medium-grained sand-sized shell, some fine to medium-grained sand-sized quartz, 1Y 8/1 light greenish gray (SP) , silty, mostly fine-grained sand-sized quartz, some silt, trace shell, strong reaction with HCl, 1Y 6/1 greenish gray (SM) NOTES: Abbreviations: SAJ FORM 1836 JUN 2 (Continued) 15

30 DRIING LOG (Cont. Sheet) PROJECT Lee County SPP, Gasparilla Segment LOCATION COORDINATES X = 56,891 Y = 862,237 Boring Designation VB-GAS14-9 INSTAATION SHEET 2 Jacksonville District OF 2 SHEETS COORDINATE SYSTEM/DATUM HORIZONTAL ELEVATION TOP OF BORING ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. 1. USACE Jacksonville is the custodian for these original files. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE Soils are field visually classified in accordance with the Unified Soils System. 3. Laboratory Testing Results SAME SAME LABORATORY ID DEPTH CLASSIFICATION /.8 SP* 2 5./5.3 SP* 3 9./9.3 SP* /13.8 SM* *Lab visual classification based on gradation curve 2 4. Additional Laboratory Testing 1 Percent Visual Shell 2 Percent Visual Shell 3 Percent Visual Shell 4 Percent Visual Shell 25 3 SAJ FORM 1836-A JUN 2 35

31 DRIING LOG DIVISION South Atlantic 1. PROJECT Lee County SPP, Gasparilla Segment Boring Designation VB-GAS14-1 INSTAATION SHEET 1 Jacksonville District OF 2 SHEETS 9. SIZE AND TYPE OF BIT See Remarks 1. COORDINATE SYSTEM/DATUM HORIZONTAL 2. BORING DESIGNATION VB-GAS14-1 LOCATION COORDINATES X = 561,377 Y = 862, MANUFACTURER'S DESIGNATION OF DRI AUTO HAMMER MANUAL HAMMER 3. DRIING AGENCY Corps of Engineers - CESAJ CONTRACTOR FILE NO TOTAL SAMES DISTURBED 3 UNDISTURBED (UD) 4. NAME OF DRIER Lester Gaughf 5. DIRECTION OF BORING INCLINED DEG. FROM BEARING 13. TOTAL NUMBER CORE BOXES 14. ELEVATION GROUND WATER 15. BORING STARTED COMETED 6. THICKNESS OF OVERBURDEN 7. DEPTH DRIED INTO ROCK 8. TOTAL DEPTH OF BORING N/A N/A 1. Ft. 16. ELEVATION TOP OF BORING 17. TOTAL RECOVERY FOR BORING N/A 18. SIGNATURE AND TITLE OF INSPECTOR, ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE., poorly-graded, mostly sand to gravel-sized shell, little fine-grained sand-sized quartz, trace silt, strong reaction with HCl, 1Y 7/1 light greenish gray (SP) , poorly-graded, mostly fine-grained sand-sized quartz, some fine to medium-grained sand-sized shell (SP), poorly-graded, mostly sand to gravel-sized shell, some fine-grained sand-sized quartz (SP) NOTES: Abbreviations: 1 1. USACE Jacksonville is the custodian for these original files. 2. Soils are field visually classified in accordance with the Unified Soils System. 3. Boring terminated in very fine SC and core was pushed to depth, repeated with same results over multiple cores. 4. Laboratory Testing Results SAJ FORM 1836 JUN 2 (Continued) 15

32 DRIING LOG (Cont. Sheet) PROJECT Lee County SPP, Gasparilla Segment LOCATION COORDINATES X = 561,377 Y = 862,396 Boring Designation VB-GAS14-1 INSTAATION SHEET 2 Jacksonville District OF 2 SHEETS COORDINATE SYSTEM/DATUM HORIZONTAL ELEVATION TOP OF BORING ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. SAME SAME LABORATORY ID DEPTH CLASSIFICATION /.8 SP* 2 4.5/4.8 SP* 3 8.5/8.8 SP* BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE 15 *Lab visual classification based on gradation curve 5. Additional Laboratory Testing 1 Percent Visual Shell 2 Percent Visual Shell 3 Percent Visual Shell SAJ FORM 1836-A JUN 2 35

33 DRIING LOG DIVISION South Atlantic 1. PROJECT Lee County SPP, Gasparilla Segment Boring Designation VB-GAS14-11 INSTAATION SHEET 1 Jacksonville District OF 2 SHEETS 9. SIZE AND TYPE OF BIT See Remarks 1. COORDINATE SYSTEM/DATUM HORIZONTAL 2. BORING DESIGNATION VB-GAS14-11 LOCATION COORDINATES X = 561,798 Y = 862, MANUFACTURER'S DESIGNATION OF DRI AUTO HAMMER MANUAL HAMMER 3. DRIING AGENCY Corps of Engineers - CESAJ CONTRACTOR FILE NO TOTAL SAMES DISTURBED 3 UNDISTURBED (UD) 4. NAME OF DRIER Lester Gaughf 5. DIRECTION OF BORING INCLINED DEG. FROM BEARING 13. TOTAL NUMBER CORE BOXES 14. ELEVATION GROUND WATER 15. BORING STARTED COMETED 6. THICKNESS OF OVERBURDEN 7. DEPTH DRIED INTO ROCK 8. TOTAL DEPTH OF BORING N/A N/A 13.5 Ft. 16. ELEVATION TOP OF BORING 17. TOTAL RECOVERY FOR BORING N/A 18. SIGNATURE AND TITLE OF INSPECTOR, ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE., poorly-graded, mostly sand to gravel-sized shell, little fine-grained sand-sized quartz, trace silt, strong reaction with HCl, 1Y 8/1 light greenish gray (SP) 1 2.9, poorly-graded, mostly fine-grained sand-sized quartz, little fine to medium-grained sand-sized shell (SP) 5 6.3, poorly-graded, mostly sand to gravel-sized shell, some fine-grained sand-sized quartz (SP) SILT, inorganic-l, few fine-grained sand-sized quartz, strong reaction with HCl, 1Y 5/1 greenish gray (ML) At 12.9 Ft., 1" sand seam At 13.2 Ft., 1" sand seam, silty, mostly fine-grained sand-sized quartz, little silt, strong reaction with HCl, 1Y 6/1 greenish gray (SM) Abbreviations: SAJ FORM 1836 JUN 2 (Continued) 15

34 DRIING LOG (Cont. Sheet) PROJECT Lee County SPP, Gasparilla Segment LOCATION COORDINATES X = 561,798 Y = 862,64 Boring Designation VB-GAS14-11 INSTAATION SHEET 2 Jacksonville District OF 2 SHEETS COORDINATE SYSTEM/DATUM HORIZONTAL ELEVATION TOP OF BORING ELEV. DEPTH LEGEND NOTES: CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE USACE Jacksonville is the custodian for these original files. 2. Soils are field visually classified in accordance with the Unified Soils System. 3. Laboratory Testing Results SAME SAME LABORATORY ID DEPTH CLASSIFICATION /2.3 SP* 2 7./7.3 SP* /11.8 SP* 2 *Lab visual classification based on gradation curve 4. Additional Laboratory Testing 1 Percent Visual Shell 2 Percent Visual Shell 3 Percent Visual Shell 25 3 SAJ FORM 1836-A JUN 2 35

35 DRIING LOG DIVISION South Atlantic 1. PROJECT Lee County SPP, Gasparilla Segment Boring Designation VB-GAS14-12 INSTAATION SHEET 1 Jacksonville District OF 2 SHEETS 9. SIZE AND TYPE OF BIT See Remarks 1. COORDINATE SYSTEM/DATUM HORIZONTAL 2. BORING DESIGNATION VB-GAS14-12 LOCATION COORDINATES X = 562,25 Y = 862, MANUFACTURER'S DESIGNATION OF DRI AUTO HAMMER MANUAL HAMMER 3. DRIING AGENCY Corps of Engineers - CESAJ CONTRACTOR FILE NO TOTAL SAMES DISTURBED 3 UNDISTURBED (UD) 4. NAME OF DRIER Lester Gaughf 5. DIRECTION OF BORING INCLINED DEG. FROM BEARING 13. TOTAL NUMBER CORE BOXES 14. ELEVATION GROUND WATER 15. BORING STARTED COMETED 6. THICKNESS OF OVERBURDEN 7. DEPTH DRIED INTO ROCK 8. TOTAL DEPTH OF BORING N/A N/A 14.8 Ft. 16. ELEVATION TOP OF BORING 17. TOTAL RECOVERY FOR BORING N/A 18. SIGNATURE AND TITLE OF INSPECTOR, ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. BOX OR SAME RQD OR UD REMARKS BLOWS/ 1 FT. N-VALUE., poorly-graded, mostly medium to coarse-grained sand-sized shell, some fine to medium-grained sand-sized quartz, trace silt, strong reaction with HCl, 1Y 8/1 light greenish gray (SP) 1 At 4.5 Ft., mostly sand to gravel-sized shell, some fine-grained sand-sized quartz At 8.3 Ft., mostly medium to coarse-grained sand-sized shell, some fine to medium-grained sand-sized quartz, poorly-graded with silt, mostly fine-grained sand-sized quartz, few silt, trace shell, strong reaction with HCl, 1Y 6/1 greenish gray (SP-SM), silty, mostly fine-grained sand-sized quartz, little silt, strong reaction with HCl, 1Y 5/1 greenish gray (SM) At 11.6 Ft., little fine gravel-sized shell SAJ FORM 1836 JUN 2, poorly-graded with silt, mostly fine to medium-grained sand-sized quartz, little fine to medium-grained sand-sized shell, few silt, strong reaction with HCl, 1Y 8/1 light greenish gray (SP-SM), poorly-graded, mostly fine to (Continued) 15

36 DRIING LOG (Cont. Sheet) PROJECT Lee County SPP, Gasparilla Segment LOCATION COORDINATES X = 562,25 Y = 862,783 Boring Designation VB-GAS14-12 INSTAATION SHEET 2 Jacksonville District OF 2 SHEETS COORDINATE SYSTEM/DATUM HORIZONTAL ELEVATION TOP OF BORING ELEV. DEPTH LEGEND CLASSIFICATION OF MATERIALS % REC. medium-grained sand-sized shell, little fine-grained sand-sized quartz, trace silt, strong reaction with HCl, 1Y 8/1 light greenish gray (SP) BOX OR SAME RQD OR UD Abbreviations: REMARKS BLOWS/ 1 FT. N-VALUE 15 NOTES: 1. USACE Jacksonville is the custodian for these original files. 2. Soils are field visually classified in accordance with the Unified Soils System. 3. Laboratory Testing Results SAME SAME LABORATORY ID DEPTH CLASSIFICATION /.8 SP* 2 4.5/4.8 SP* 3 8.5/8.8 SP* 2 *Lab visual classification based on gradation curve 4. Additional Laboratory Testing 1 Percent Visual Shell 2 Percent Visual Shell 3 Percent Visual Shell 25 3 SAJ FORM 1836-A JUN 2 35