REPORT OF GEOTECHNICAL EXPLORATION PEPSI PLACE WATER MAIN REPLACEMENT JACKSONVILLE, FLORIDA E&A PROJECT NO CLIENT ID: 4784

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1 REPORT OF GEOTECHNICAL EXPLORATION PEPSI PLACE WATER MAIN REPLACEMENT JACKSONVILLE, FLORIDA E&A PROJECT NO CLIENT ID: 78 Prepared for: Construction & Engineering Services Consultants, Inc. 93 Baymeadows Road, Suite 100 Jacksonville, Florida 35 Prepared by: Ellis-ECS Florida, LLC 70 Davis Creek Road Jacksonville, Florida 35 December 1, 017

2 December 1, 017 Mr. Claro N. Magpantay, P.E. Construction & Engineering Services Consultants, Inc. 93 Baymeadows Road, Suite 100 Jacksonville, Florida 35 Reference: Report of Geotechnical Exploration Pepsi Place Water Main Replacement Jacksonville, Florida E&A Project No Dear Mr. Magpantay: Ellis & Associates, Inc. has completed a geotechnical exploration for the subject project in accordance with our proposal last revised November 1, 017. The exploration was conducted to evaluate the general subsurface conditions within the proposed pipeline areas and to provide recommendations for site preparation and support of the pipelines. We appreciate this opportunity to be of service as your geotechnical consultant on this phase of the project and look forward to providing the materials testing and observation that will be required during the construction phase. If you have any questions, or if we may be of any further service, please contact us. Very truly yours, ELLIS & AOCIATES, INC. Colin A. Shaw, E.I. Staff Engineer David W. Spangler, P.E. Senior Project Engineer Registered, Florida No Distribution: Mr. Claro N. Magpantay, P.E. - Construction & Engineering Services Consultants, Inc. 1 pdf 70 Davis Creek Rd., Jacksonville, FL 35 T: F:

3 Subject TABLE OF CONTENTS Pepsi Place Watermain Replacement Page No. 1.0 PROJECT INFORMATION Site Location and Description Project Description FIELD EXPLORATION SPT Borings VISUAL CLAIFICATION GENERAL SUBSURFACE CONDITIONS DESIGN RECOMMENDATIONS General Pipeline Support Recommendations....0 EARTHWORK RECOMMENDATIONS....1 Clearing.... Temporary Groundwater Control....3 Excavation Protection Compaction of Bottom of Excavation Structural Backfill and Compaction of Structural Backfill QUALITY CONTROL REPORT LIMITATIONS... FIGURES Figure 1 Figure APPENDICES Appendix A Site Location Plan Field Exploration Plan Soil Boring Logs Field Exploration Procedures Key to Soil Classification 35-5 i December 1, 017

4 Pepsi Place Watermain Replacement 1.0 PROJECT INFORMATION 1.1 Site Location and Description The project site is located along Pepsi Place in Jacksonville, Florida. The general site location is shown as Figure 1. The site is developed as an existing roadway. Adjacent properties include commercial and industrial properties. 1. Project Description Project information has been provided to us in discussions with you. Based on our correspondence with you we understand that a portion of the 5 LF of a 8-inch cast iron pipe will be replaced within a new 8- inch PVC water main along Pepsi Place in Jacksonville, Florida. The existing 8-inch cast iron pipe will be abandoned in place and grout filled. Open-cut will be the preferred method for installation of this pipeline. You provided us with an RFP document that describes the project and includes a figure showing the location of the existing and proposed pipeline routes. If the project information above is incorrect, then the recommendations in this report may need to be reevaluated. Any changes in these conditions should be provided so the need for re-evaluation of our recommendations can be assessed..0 FIELD EXPLORATION A field exploration was performed on November 8, 017. The approximate boring locations are shown on the Field Exploration Plan, Figure. The approximate boring locations were determined in the field by our personnel using paced measurements from existing site features, and should be considered accurate only to the degree implied by the method of measurement used..1 SPT Borings To explore the subsurface conditions within the areas of the proposed pipeline, we located and performed Standard Penetration Test (SPT) borings drilled to depths of approximately 15 feet below the existing asphalt surface. The borings were performed in general accordance with the methodology outlined in ASTM D 158. A summary of the field procedures is included in Appendix A. 3.0 VISUAL CLAIFICATION A geotechnical engineer classified representative soil samples obtained during our field exploration using the Unified Soil Classification System (USCS) in general accordance with ASTM D 88. A Key to the Soil Classification System is included in Appendix A..0 GENERAL SUBSURFACE CONDITIONS Detailed boring records are included in Appendix A. When reviewing these records it should be understood that the soil conditions will vary between the boring locations. In general, the borings encountered a surficial layer of topsoil underlain by layers of very loose to medium dense fine sand, fine sand with clay, fine sand with silt (A-3), silty fine sand (A--), and to a lesser extent clayey fine sand (A- -). The groundwater level was encountered at each boring location and measured between the depths of.7 and.5 feet below the existing ground surface. The depth to the groundwater level is noted on the Log of Boring records. However, it should be anticipated the groundwater level will fluctuate due to seasonal climatic variations, surface water runoff patterns, construction operations, and other interrelated factors. The normal seasonal high groundwater level is affected by a number of factors. The drainage characteristics of the soils, land surface elevation, relief points such as drainage ditches, lakes, rivers, December 1, 017

5 Pepsi Place Watermain Replacement swamp areas, etc., and distance to relief points are some of the more important factors influencing the seasonal high groundwater level. Based on our interpretation of the site conditions, including the boring logs and Duval County Soil Survey, we estimate the normal seasonal high groundwater level at the boring locations at the levels indicated on the attached boring logs. It is possible that groundwater levels may exceed the estimated normal seasonal high groundwater level as a result of significant or prolonged rains. 5.0 DESIGN RECOMMENDATIONS 5.1 General Our geotechnical engineering evaluation of the site and subsurface conditions with respect to the planned construction and our recommendations for site preparation and pipeline support are based on (1) our site observations, () the field data obtained, and (3) our understanding of the project information as presented in this report. Should the location of the water main be significantly changed, please contact us so that we can review our recommendations. Also, the discovery of any site or subsurface conditions during construction which deviate from the data obtained during this geotechnical exploration should also be reported to us for our evaluation. The recommendations presented in the subsequent sections of this report present design and construction techniques which are appropriate for the planned construction. We recommend that we be provided the opportunity to review the final plans and earthwork specifications to verify that our recommendations have been properly interpreted and implemented. 5. Pipeline Support Recommendations We consider the subsurface conditions at the site capable of supporting the proposed pipeline structure when constructed upon properly prepared subgrade soils. Provided the site preparation and earthwork construction recommendations outlined in Section.0 of this report are performed, the following parameters may be used for design. We anticipate the buried structures will exert little or no net downward pressure on the soils; rather, the structures may be subject to hydrostatic uplift pressure when the structures are empty. Below grade structures should be designed to resist lateral earth pressures and hydrostatic uplift pressures appropriate for their depth below existing grade and the normal seasonal high groundwater table..0 EARTHWORK RECOMMENDATIONS Earthwork as outlined in this section should be performed to provide more uniform bearing conditions and to reduce the potential for post-construction settlements of the planned pipeline..1 Clearing Prior to construction, the location of existing underground utility lines within the construction area should be established. Provisions should then be made to relocate interfering utilities to appropriate locations. It should be noted that if abandoned underground pipes are not properly removed or plugged, they may serve as conduits for subsurface erosion which may subsequently lead to excessive settlement of overlying pavement.. Temporary Groundwater Control The groundwater level was encountered at the boring locations between the depths of.7 and.5 feet below the existing ground surface at the time of our exploration. Because of the need for excavation to the December 1, 017

6 Pepsi Place Watermain Replacement pipeline bearing levels the densification of backfill, it may be necessary to install temporary groundwater control measures to dewater the area to facilitate the excavation and compaction processes. The groundwater control measures should be determined by the contractor. The water table should be maintained at least feet below the required depth of excavation. The dewatering system should not be decommissioned until backfilling has reached a height of feet above the groundwater level at the time of construction..3 Excavation Protection Excavation work will be required to meet OSHA Excavation Standard Subpart P regulations, Type C Soils. A trench box or braced sheet pile structure may be needed for excavation support depending on horizontal clearances. If required, the support structure should be designed according to OSHA sheeting and bracing requirements. We recommend a Florida registered Professional Engineer design the sheeting/bracing system. Use of an open cut is not considered practical because it will require a large excavation to preclude slope sloughing.. Compaction of Bottom of Excavation After installing the temporary groundwater control measures, and achieving the required depth of excavation, the exposed surface of sandy soils should be compacted by the use of hand-operated equipment. If clayey soils are at the exposed surface, it is recommended the initial fill layer be placed on top of the exposed surface, then compacted. Typically, the material should exhibit moisture contents within ± percent of the Modified Proctor optimum moisture content (AASHTO T-180) during the compaction operations. Compaction should continue until densities of at least 95 percent of the Modified Proctor maximum dry density (AASHTO T-180) have been achieved within the upper one foot below the exposed surface within the pipeline structures excavation. Should the bearing level soils experience pumping and soil strength loss during the compaction operations, compaction work should be immediately terminated and (1) the disturbed soils removed and backfilled with dry structural fill soils which are then compacted, or () the excess moisture content within the disturbed soils allowed to dissipate before recompacting..5 Structural Backfill and Compaction of Structural Backfill Structural backfill within the pipeline excavation should be placed in loose lifts not exceeding six inches in thickness and compacted by the use of hand-operated compaction equipment. Structural backfill is defined as a non-plastic, inorganic, granular soil having less than 10 percent material passing the No. 00 mesh sieve and containing less than.0 percent organic material. The sandy soils (A-3, A--) excavated for the pipeline may be used as backfill. However, it should be anticipated that the silty fine sand (A--) may be difficult to dry and compact due to an inherent nature to retain moisture. Typically, the backfill material should exhibit moisture contents within ± percent of the Modified Proctor optimum moisture content (AASHTO T-180) during the compaction operations. Compaction should continue until densities of at least 95 percent of the Modified Proctor maximum dry density (AASHTO T-180) have been achieved within each -inch thick lift of the compacted structural backfill. Because the clayey soils (A--) have an excessive fines content (i.e., greater than 15 percent), and a tendency to retain moisture which makes these soils difficult to dry and compact, we recommend these soils not be used as structural backfill. 7.0 QUALITY CONTROL A representative number of field in-place density tests should be performed in each -inch thick lift of compacted backfill. The density tests are considered necessary to verify that satisfactory compaction December 1, 017

7 Pepsi Place Watermain Replacement operations have been performed. We recommend density testing be performed at one location for every 300 feet of pipeline. 8.0 REPORT LIMITATIONS Our geotechnical exploration has been performed, our findings obtained, and our recommendations prepared in accordance with generally accepted geotechnical engineering principles and practices. Ellis & Associates, Inc. is not responsible for any independent conclusions, interpretation, opinions or recommendations made by others based on the data contained in this report. Our scope of services was intended to evaluate the soil conditions within the zone of soil influenced by the pipeline and manhole bearing conditions. Our scope of services does not address geologic conditions such as sinkholes or soil conditions existing below the depth of the soil borings. This report does not reflect any variations which may occur adjacent to or between soil borings. The discovery of any site or subsurface condition during construction which deviate from the data obtained during this geotechnical exploration should be reported to us for our evaluation. Also, in the event of any change to the location of the pipeline alignment, please contact us so that we can review our recommendations. We recommend that we be provided the opportunity to review the earthwork specifications to verify that our recommendations have been properly interpreted and implemented December 1, 017

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11 APPENDIX A SOIL BORING LOGS FIELD EXPLORATION PROCEDURES KEY TO SOIL CLAIFICATION

12 CLIENT JOB # BORING # SHEET Construction & Engineering Services Cons PROJECT NAME 55 ARCHITECT-ENGINEER B1 1 OF 1 Pepsi Place Water Main Replacement SITE LOCATION 00 Pepsi Place, Jacksonville, Duval County, FL NORTHING EASTING STATION DEPTH (FT) 0 5 SAMPLE NO. S-1 S- S-3 SAMPLE TYPE SAMPLE DIST. (IN) RECOVERY (IN) DESCRIPTION OF MATERIAL BOTTOM OF CASING SURFACE ELEVATION Topsoil Depth [.00"] (SP-SC) {A-3} FINE SAND WITH CLAY, brown, moist, loose (SP-SC) {A-3} FINE SAND WITH CLAY, light brown and dark brown, moist to saturated, very loose Construction & Engineering Services Cons ENGLISH UNITS LO OF CIRCULATION WATER LEVELS ELEVATION (FT) BLOWS/" /1 7 3 /18 CALIBRATED PENETROMETER TONS/FT ROCK QUALITY DESIGNATION & RECOVERY RQD% 0% 0% 0% 80% 100% PLASTIC LIMIT % REC.% WATER CONTENT % STANDARD PENETRATION BLOWS/FT LIQUID LIMIT % 10 S- S-5 (SM) {A--} SILTY FINE SAND, gray, saturated, loose (SP-SM) {A-3} FINE SAND WITH SILT, gray, saturated, medium dense 15 S END OF 15' THE STRATIFICATION LINES REPRESENT THE APPROXIMATE BOUNDARY LINES BETWEEN SOIL TYPES. IN-SITU THE TRANSITION MAY BE GRADUAL. WL.5 WS WD BORING STARTED 11/8/17 CAVE IN DEPTH WL(SHW).0 WL(ACR) BORING COMPLETED 11/8/17 HAMMER TYPE Manual WL RIG EA Deeprock DR30 FOREMAN Trailer Rig S. Burns DRILLING METHOD Mud Rotary

13 CLIENT JOB # BORING # SHEET Construction & Engineering Services Cons PROJECT NAME 55 ARCHITECT-ENGINEER B 1 OF 1 Pepsi Place Water Main Replacement SITE LOCATION 00 Pepsi Place, Jacksonville, Duval County, FL NORTHING EASTING STATION DEPTH (FT) SAMPLE NO. S-1 S- S-3 S- S-5 SAMPLE TYPE SAMPLE DIST. (IN) RECOVERY (IN) DESCRIPTION OF MATERIAL BOTTOM OF CASING SURFACE ELEVATION Topsoil Depth [3.00"] (SP) {A-3} FINE SAND, brown, moist, medium dense, with trace Gravel (SP) {A-3} FINE SAND, gray, moist, medium dense (SP) {A-3} FINE SAND, brown, wet to saturated, loose (SC) {A--} CLAYEY FINE SAND, brown, saturated, loose (SP-SC) {A-3} FINE SAND WITH CLAY, gray and orange, saturated, loose to medium dense (SM) {A--} SILTY FINE SAND, contains slight roots, gray, saturated, medium dense (SM) {A--} SILTY FINE SAND, gray, saturated, loose Construction & Engineering Services Cons ENGLISH UNITS LO OF CIRCULATION WATER LEVELS ELEVATION (FT) BLOWS/" CALIBRATED PENETROMETER TONS/FT ROCK QUALITY DESIGNATION & RECOVERY RQD% 0% 0% 0% 80% 100% PLASTIC LIMIT % REC.% WATER CONTENT % STANDARD PENETRATION BLOWS/FT LIQUID LIMIT % (SP-SM) {A-3} FINE SAND WITH SILT, gray, saturated, medium dense 15 S END OF 15' THE STRATIFICATION LINES REPRESENT THE APPROXIMATE BOUNDARY LINES BETWEEN SOIL TYPES. IN-SITU THE TRANSITION MAY BE GRADUAL. WL.7 WS WD BORING STARTED 11/8/17 CAVE IN DEPTH WL(SHW).0 WL(ACR) BORING COMPLETED 11/8/17 HAMMER TYPE Manual WL RIG FOREMAN S. Burns DRILLING METHOD Mud Rotary

14 FIELD EXPLORATION PROCEDURES Standard Penetration Test (SPT) Borings The Standard Penetration Test (SPT) borings were made in general accordance with the latest revision of ASTM D 158, Penetration Test and Split-Barrel Sampling of Soils. The borings were advanced by rotary (or wash-n-chop ) drilling techniques. At ½ to 5 foot intervals, a split-barrel sampler inserted to the borehole bottom and driven 18 inches into the soil using a 10 pound hammer falling on the average 30 inches per hammer blow. The number of hammer blows for the final 1 inches of penetration is termed the penetration resistance, blow count, or N-value. This value is an index to several in-place geotechnical properties of the material tested, such as relative density and Young s Modulus. After driving the sampler 18 inches (or less if in hard rock-like material), the sampler was retrieved from the borehole and representative samples of the material within the split-barrel were containerized and sealed. After completing the drilling operations, the samples for each boring were transported to our laboratory where they were examined by our engineer in order to verify the driller s field classification. The retrieved samples will be kept in our facility for a period of six () months unless directed otherwise.

15 KEY TO SOIL CLAIFICATION Description of Compactness or Consistency in Relation To Standard Penetration Resistance Relative Density Granular Materials Safety Hammer SPT N-Value (Blow/Foot) Automatic Hammer SPT N-Value (Blow/Foot) Very Loose Less than Less than 3 Loose Medium Dense Dense Very Dense Greater than 50 Greater than 0 Silts and Clays Safety Hammer Automatic Consistency SPT N-Value Hammer SPT N- (Blow/Foot) Value (Blow/Foot) Very Soft Less than Less than 1 Soft 1 3 Firm 8 3 Stiff Very Stiff Hard Greater than 30 Greater than DESCRIPTION OF SOIL COMPOSITION** (Unified Soil Classification System) MAJOR DIVISION Group Symbol LABORATORY CLAIFICATION CRITERIA FINER THAN SUPPLEMENTARY 00 SIEVE % REQUIREMENTS SOIL DESCRIPTION Coarse grained (over 50% by weight coarser than No. 00 sieve) Fine grained (over 50% by weight finer than No. 00 sieve) Gravelly soils (over half of coarse fraction larger than No. ) Sandy soils (over half of coarse fraction finer than No. ) Low compressibility (liquid limit less than 50) High compressibility (liquid limit more than 50) GW <5* GP <5* D 0 /D 10 greater than, D 30 / (D 0 x D 10 ) between 1 & 3 Not meeting above gradation for GW Well graded gravels, sandy gravels Gap graded or uniform gravels, sandy gravels GM >1* PI less than or below A-line Silty gravels, silty sandy gravels GC >1* PI over 7 above A-line Clayey gravels, clayey sandy gravels SW <5* SP <5* D 0 /D 10 greater than, D 30 / (D 0 x D 10 ) between 1 & 3 Not meeting above gradation requirements Well graded sands, gravelly sands Gap graded or uniform sands, gravelly sands SM >1* PI less than or below A-line Silty sands, silty gravelly sands SC >1* PI over 7 and above A-line Clayey sands, clayey gravelly sands ML Plasticity chart Silts, very fine sands, silty or clayey fine sands, micaceous silts CL Plasticity chart Low plasticity clays, sandy or silty clays OL Plasticity chart, organic odor or color Organic silts and clays of low plasticity MH Plasticity chart Micaceous silts, diatomaceous silts, volcanic ash CH Plasticity chart Highly plastic clays and sandy clays OH Plasticity chart, organic odor or color Organic silts and clays of high plasticity Soils with fibrous organic matter PT Fibrous organic matter; will char, burn or glow Peat, sandy peats, and clayey peat * For soils having 5 to 1 percent passing the No. 00 sieve, use a dual symbol such as SP-SM. ** Standard Classification of Soils for Engineering Purposes (ASTM D 87) SAND/GRAVEL DESCRIPTION MODIFIERS Modifier Sand/Gravel Content Trace <15% With 15% to 9% Sandy/Gravelly >9% ORGANIC MATERIAL MODIFIERS Modifier Organic Content Trace 1% to % Few % to % Some % to 8% Many >8% SILT/CLAY DESCRIPTION MODIFIERS Modifier Silt/Clay Content Trace <5% With 5% to1% Silty/Clayey 13% to 35% Very >35%