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SW8030504_COMPLIANCE_20031219
STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE FVCOM . PLIANCE. EVALUATION INSPECTION DOC DATE YYYYMMDD ouA dr2in to basin i64- j, y ter! toaa 1 � � I4 P/77,7rhTT!7! -fin � I T 4 u j tam qr+x x,x {! •���( T.,Mea T ; ._ �- M�^y � — r,+s. }�v+ _ I rnsmre . 40 td.. \\ Ir `- �'-�---�.az ��!• ij 1 ��esi 11� � pa axN ..xM 4 ..ca ,,.,,\ 04 s ; Y R r. 44 a,f+ �� ,a>•,r:�fiff `4' a' ,.,,,��,. .y,Jra t �rxAls;"�""r•""".n! r- �j .� .-yam \}.yi J�n.m ti". t r.-,�!�itrririrr�ili� ,r• ♦/ NY d�7{J �7! � %�` � � \ � s'�r� ��'40 � �.,� 'h I'vo+ t � 37777'7 w f .� fj �•• n+�swear • r 4prt pm ��/��•=..ii .MJv �+ A•3 ?tr• .R.n \. ,1.3t �R�11 ACRES �� _, /,•�/p���f. / , FA37 „ -41 40 0 VW 14 CH.s.�' R µV ��C1iAL GAlOL11�A �t1Vll0?Si:',�� lHopw,ANAGEMSNT CaM�•AtSslo:i � t�� v�visiosa of waseR aunLixV 1U a �403 Q _006_oc?3 pROJ March 6, 2003 LRC Realty Inc. 1585 Frederick Boulevard Akron, Ohio 44320 . Attention: Mr. David Craine E IVED 7 2003 Subject: Geotechnical Engineering Report Walgreens — Country Club Road & Western Boulevard Jacksonville, North Carolina Titan Project No. 72035009 Dear Mr. Craine: TITAN d&am is &"6 A 1Terracon Company 111-C West Fire Tower Road Wintervllle, North Carolina 28590 (252) 353-1600 Fax: (252) 353--000002 GG : s, -) V E Titan Atlantic Group (Titan) is pleased to present this Geotechnical Engineering Report for the proposed retail building in Jacksonville, North Carolina. Our services were provided in accordance with our agreement. Findings, conclusions, and recommendations given in this report are subject to the limitations presented in the Appendix. Please contact us if you have any questions or comments regarding this report. We are available to discuss our recommendations with you and to provide additional services as necessary during the final design and construction phases of this project. We have enjoyed assisting you and look forward to serving as your consultant on the remainder of this project and future projects. Sincerely, TITAN ATLANTIC GROUP _r. � -- 4?-- G. Ryan Bridger, E.I. Staff Geotechnical Professional Attachments V4Ntru(Irr,� �H CARP O� ........114, -s a � , SS104, s 's SEAS. G / 11285 'l Qr q '•FOCI NE`�Q:�P��, Vaeyy C. tce President eS Chief Engineer'04..,,Er •••� • `V %`o�' Registered, North Carolina 11285 reaeafAUA CATitanlProjects12003172035009 Walgreens-Country Club Dr & Western Blvd-Jacksonville,NClCover Letter.doc Arizona E Arkansas E California E Colorado E Georgia ■ laano E Illinois ■ Iowa ■ Kansas ■ Kentucky E Minnesota E Missouri Monlana a Nebraska E Nevada E New Mexico E North Carolina ■ Oklahoma ■ Tennessee E Texas E Utah E Wisconsin ■ Wyoming Consulting Engineers & Sclentists Since 1965 www.terrocon.com TABLE OF CONTENTS 1.0 PURPOSE OF GEOTECBNICAL STUDY...............................................................................................I 2.0 PROJECT INFORMATION................:........................................................................................................I 3.0 SUBSURFACE EXPLORATION AND TESTING...................................................................................1 3.1 Field Exploration.........................................................................................................................................1 4.0 SITE AND SUBSURFACE CONDITIONS................................................................................................2, 4.1 Site Description........................................................................................................................................... 2 4.2 Regional Geology........................................................................................................................................2 4.3 Soil Conditions........................................................................................................................................... 2 4.4 Groundwater Conditions.............................................................................................................................. 3 5.0 GEOTECBNICAL RECOMMENDATIONS...........................................................................................3 5.1 Site Preparation.................................................................................................... ... 3 ..................................... 5.2 Excavations..................................................................................................................................................4 5.3 Earthwork.....................................................................................................................................................4 5.4 Geopier / Stone Columns............................................................................................................................4 5.5 Shallow Footings......................................................................................................................................... 5 5.6 Slabs.............................................................................................................................................................5 5.7 Pavements.................................................................................................................................................... 6 5.8 Seismic Site Classification......................................................................................................................... 6 APPENDIX Limitations Site Location Plan Boring Location Plan Boring Logs Key to Soil Classification Soil Classification System Key to Symbols Walgreens -- Country Club Road & Western Boulevard Titan Project No. 72025009 Jacksonville, NC 316103 1.0 PURPOSE OF GEOTECHNICAL STUDY The purpose of this geotechnical study was to explore the general subsurface conditions at the project site and to evaluate these conditions with respect to the design and construction of earthwork, foundations, floor slabs, detention and/or retention ponds, and pavements for the project. Our scope of services included drilling soil test borings, performing engineering analyses, and preparing this report of our findings and recommendations. 2.0 PROJECT INFORMATION Mr. David Craine of LRC Realty, Inc. provided project information to Titan. We understand that a new Walgreens Store is planned for a site in Jacksonville, North Carolina. The site is at the approximate location shown on Drawing No. 1 in the Appendix. We received a site plan which shows the locations of existing site features and the proposed store from Rivers & Associates. The project includes the construction of the retail store building and associated paved areas. Stormwater detention and/or retention ponds are also planned for the site. We were requested to obtain geotechnical information within the proposed building, pavement, and detention pond areas. The proposed building will be an approximately 15,000 square feet, single -story structure with 8 inch masonry load bearing exterior walls with a 4 inch brick veneer, an interior structural steel frame, and a slab -on -grade floor. We understand that maximum column loads will be less than 65 kips, maximum wall loads will be less than 3.5 kips per foot, and floor slab live Ioads will be 100 psf. According to Walgreens Criteria Specifications, the pavements are to be designed for a 20-year life based on a traffic loading of 1,200 passenger vehicles, 10 single -unit trucks, and 2 multi -unit trucks per day. We understand that minimum cut and fill depths, approximately 1 foot, are planned for the site. 3.0 SUBSURFACE EXPLORATION AND TESTING 3.1 Field Exploration In order to explore the general subsurface conditions at the project site, Titan subcontracted Carolina Drilling to drill 9 soil test borings to depths of 10 to 20 feet below existing grades. Titan personnel performed two hand auger borings to a depth of 5 feet. The borings were advanced at the approximate lo- cations shown on Drawing No. 2 in the Appendix. Two undisturbed soil samples were obtained from depths of 5 to 9 feet in a boring within close proximity to Boring B-3. The number of borings, their locations, and depths were selected by LRC Realty, Inc. After further analysis of existing conditions and the findings from fieldwork and drilling, no additional drilling or investigations are deemed necessary in order to make geotechnical recommendations for this project. The borings were Iocated in the field by Titan personnel by pacing distances and estimating right angles relative to existing site features. Soil test borings (B-1 through B-8 and B-10) were performed by a trailer -mounted power drilling rig utilizing rotary wash drilling procedures. Standard Penetration Tests (SPT) were performed in the soil test borings at 2.5 to 5.0 feet intervals in general accordance with ASTM D 1586. Titan personnel visually classified the split -spoon soil samples in general accordance with the Unified Soil Classification System. Walgreens — Country Club Road & Western Boulevard Titan Project No. 72025009 Jacksonville, NC 316103 Titan personnel performed borings B-9 and B-11, using a hand auger, to a depth of 5 feet below grade. The hand auger borings were supplemented with a dynamic cone penetrometer testing at approximate 1 foot intervals. Borings B-1 through B-5 are located in the proposed building area. The planned paved areas include Borings B-6 through B-10 and Boring B-11 is within the detention pond area. Boring Logs are included in the Appendix of this report. The elevations given on the boring logs were interpolated from the spot elevations shown on the topographic site plan provided to us by Rivers & Associates. 4.0 SITE AND SUBSURFACE CONDITIONS 4.1 Site Description The site is located at the southwest corner of the intersection of Western Boulevard and Country Club Road. The northern portion of the site is currently an operating gas station (convenience store) consisting of a single story retail building, associated paved areas, gas pumps, and underground fuel storage tanks. A wooded area consisting of small pine trees and moderately thick undergrowth covers the southern portion of the site. The site also includes the adjacent strip shopping center and insurance building. The ground surface is generally flat. No drainage ditches we observed at the time of our site visit. Surface water was observed at the site in the grassed area between the existing gas station retail store and the wooded area. 4.2 Regional Geology The project site is located in the Coastal Plain Physiographic Province. The Coastal Plain consists mainly of marine sediments which were deposited during successive periods of fluctuating sea level and moving shoreline. The soils in this province are typical of those laid down in a shallow sloping sea bottom; sands, silts, and clays with irregular deposits of shells. Alluvial sands, silts, and clays are typically present near rivers and creeks. According to the 1985 Geologic Map of North Carolina, the site overlies the River Bend formation.. This Tertiary marine formation consists primarily of limestone, calcarenite overlain by and intercalated with indurated, sandy, molluscan -mold limestone. 4.3 Soil Conditions A 6-inch-thick layer of topsoil is present at the ground surface in most of the boring locations. The topsoil is generally underlain by sandy clay and clayey sand. These soils visually classify as CL and SC, respectively, in accordance with the Unified Soil Classification System. Standard penetration test values (N-values) range from 2 to 10 blows per foot (bpf) in the clays, indicating a very soft to stiff consistency. The stiffer clayey soils are typically present to a depth of 5 feet below the ground surface. These soils are generally underlain by a 10 feet thick zone of soil consisting of very soft to soft sandy clay (CL) and silty clay (CH), and very loose sand (SP). N-values in these soils range from 0 to 4 bpf. Sandy clay and clayey sand were encountered below the very soft and loose soils to boring termination depth. N-values on the order of 3 to 7 bpf were measured in the clayey soils. Walgreens — Country Club Road & Western Boulevard Titan Project No. 72025009 Jacksonville, NC 316103 Please note that wetlands delineation, the assessment of environmental conditions, or chemical testing for the presence of contaminants in the soil or groundwater of the site were beyond the scope of the geotechnical services provided for this report More detailed descriptions of the subsurface conditions encountered at each boring location are given on the boring logs in the Appendix. 4.4 Groundwater Conditions Groundwater levels were measured in the open boreholes at the completion of drilling operations to stabilization periods of approximately 30 hours. Groundwater was measured at depths of 3.5 to 8.5 feet below existing grades. This corresponds approximately to elevations 37.8 to 34.5 feet. Fluctuations in the groundwater table on the order of 1 to 2 feet are typical in the Coastal Plain, depending on variations in precipitation, evaporation, and surface water runoff. Seasonal high groundwater levels are expected to occur during or just after the typically wetter months of the year (November through April). At the time of the exploration, groundwater levels would be expected to be near seasonal high levels. 5.0 GEOTECBMCAL RECOMMENDATIONS 5.1 Site Preparation The on -site clayey soils are moisture sensitive and can be difficult to work. These difficulties can include softening of exposed subgrade soils, excessive rutting or deflection under construction traffic, and the inability to adequately dry and compact wet soil. Moisture -related earthwork difficulties can be reduced by performing the earthwork during the typically drier months of the year (May through October). All topsoil, rootmat, vegetation, debris, and other unsuitable material should be removed from the construction areas. We anticipate an average stripping depth of 8 to 10 inches to remove the rootmat in wooded areas. A stripping depth of 6 inches should be planned for the grassed areas. Topsoil may be re -used in areas to be landscaped. Concrete or asphalt should be disposed off -site. The aggregate base course below the asphalt surface course may be left in place. Any existing underground utilities, structures, or obstructions, such as the underground fuel storage tanks, in the proposed construction areas should be excavated, removed, and re-routed, as necessary. The resulting excavations should be properly backfilled with compacted structural fill as described in Section 5.3 of this report. After stripping of topsoil, rootmat, structures, and paved surfaces is completed, the exposed subgrade soils in areas to receive fill or at the subgrade elevation in cut areas should be proofrolled to detect soft or loose soils. Proofrolling should be performed with a moderately loaded dump truck or similar construction equipment: The geotechnical engineer's representative should observe this operation to aid in delineating unstable soil areas. Proofrolling should be performed after a suitable period of dry weather to avoid degrading an otherwise acceptable subgrade. Any soils which continue to rut or deflect excessively under the rolling operations should be undercut as directed by the geotechnical engineer and replaced with compacted fill material. Based on the borings, we anticipate that undercutting of near -surface soils may be required in the vicinities of Borings B-8 and B-10. Undercutting of loose or soft soils may also be necessary in localized areas between the boring locations. Potential undercutting can be reduced if the site preparation work is performed during a period of dry weather. Walgreens — Country Club Road & Western Boulevard Titan Project No. 72025009 Jacksonville, NC 316103 5.2 Excavations The clayey sands at this site classify as Type C . in accordance with current OSHA trench protection guidelines. Trench excavations 5 feet or more deep should be supported with temporary shoring and bracing, such as trench boxes. Alternatively, the excavations may be cut back on slopes no steeper than 1.5H:IV, provided they are properly dewatered. The stormwater detention pond should be constructed with sideslopes no steeper than 2H:1V to improve slope stability. However, flatter slopes will reduce erosion potential and will make maintenance of the vegetation cover easier. 5.3 Earthwork Structural fill and backfill placed at the site should classify as CL or SC in accordance with the Unified Soil Classification System that is free of organic material or debris. With the exception of topsoil and rootmat, the on -site soils may be reused as structural fill, but they will require careful moisture control. Any soils excavated from below a depth of 3 to 4 feet will likely be wet to saturated and will require significant drying prior to being reused as fill. Excess topsoil may be placed in areas to be Iandscaped. Structural fill should be placed in 8- to 10-inch thick loose lifts at a moisture content within two percent of the optimum moisture content of the material as determined by ASTM D 698 (Standard Proctor). Each lift of fill should be uniformly compacted'to a dry density of at least 95 percent of the maximum dry density of the material determined according to ASTM D 698 (Standard Proctor). The upper 18 inches in pavement and building areas should be compacted to at least 98 percent of the standard Proctor maximum dry density. The geotechnical engineer's representative should perform in place field density tests to evaluate the compaction of the structural fill and backfill placed at the site. We recommend a testing frequency of one test per lift per 5,000 square feet of fill area within the building footprint and one test per lift per 10,000 square feet of fill area within the pavement areas. For utility trench backfilI, we recommend a testing frequency of one test per lift per 100 feet of trench. 5.4 Geopier / Stone Columns We recommend ground improvement consisting of Geopiers or stone columns. Geopiers / stone columns are columns of washed, crushed stone created by packing the stone into augered holes approximately 3 feet in diameter. Based on the borings, stone elements would be required beneath all foundations. The stone elements would extend to depths of 8 to 12 feet below the existing grades. Placing the shallow footing bottom at or above the existing grades would minimize the number of stone elements to be installed within -the loose sand layer. This would help decrease the cost of installation by not requiring casing to install Geopiers because the drilled column must remain open for the installation of the stone. The installation of stone columns does not require casing because the stone is placed as the probe is retracted from the ground. The combination of stone elements and in -place soil improvements would create a much stiffer bearing condition than the original soils alone. Since the final bearing condition is much stiffer, the design bearing pressure for the shallow footings may be increased to 3,000 psf. The smaller footing sizes associated with the higher design bearing pressure helps to offset the additional cost of the stone elements. With the stone elements, we estimate footing settlements to be on the order of 3/4-inch. Differential settlement between column footings and along wall footings should also be tolerable (less 4 Walgreens -- Country Club Road do Western Boulevard Titan Project No. 72025009 Jacksonville, NC 316103 than about ''/z-inch). North Carolina / Virginia firms installing Geopiers or stone columns include GeoStructures (919-557-9069) and Hayward -Baker (336-668-0884). Installation of the Geopiers I stone columns at the site should begin with constructing a test pier and performing a full-scale Modulus Load Test on site to verify design assumptions. The test provides a conservative measure of the stiffness of the stone element and will help establish installation procedures for this particular project. Titan can coordinate with the Geopier / stone element installer to locate the test pier in the weakest site area and to provide monitoring services during the load test operations. 5.5 Shallow Footings After the installation of Geopiers I stone columns, we recommend the proposed building be supported on shallow footings bearing on Geopiers / stone columns and the improved soil. A net allowable bearing pressure of 3,000 pounds per square foot (psf) should be used for design of the footings. The net al- lowable bearing pressure is that pressure which may be transmitted to the soil in excess of the surrounding overburden pressure. Shallow foundations should be designed to bear at least 12 inches below finished grades for frost pro- tection and protective embedment. In accordance with the North Carolina State Building Code, column footings should be at least 24 inches square and wall footings should be at least 16 inches wide. We recommend that the footing excavations be examined by the geotechnical engineer's representative to verify that suitable soils are present at and below the proposed bearing elevation. Prepared bearing surfaces for foundations should not be disturbed or left exposed during inclement weather. Saturation of the footing subgrade can cause a loss of strength and increased compressibility. If construction occurs during inclement weather, and concreting of foundations is not possible at the time they are excavated, a layer of lean concrete should be placed on exposed bearing surfaces for protection. Also, concrete should not be placed on frozen subgrades. The bottom of the foundation excavations should also be clean and free of any loose soil, mud, or debris prior to placing concrete. 5.6 Slabs Ground -level floor slabs may be supported on properly compacted fill or suitable natural soils. A 4-inch-thick layer of washed stone (NCDOT No. 57 or 67), as well as a plastic vapor barrier, should be provided beneath all building floor slabs to prevent capillary rise and a damp slab condition. The floor slabs should be designed to resist the anticipated dead and live loads. We recommend that the floor slabs be designed using a modulus of subgrade reaction (k) of 150 pounds per cubic inch. We recommend that construction joints in the slabs include dowels to improve load transfer across the joints and to reduce the potential for differential vertical displacement across the joints. 5.7 Pavements The majority of the near surface soils in the proposed pavement areas are sandy clays. These soils are generally poor to marginal for pavement support since they are subject to softening and loss of strength with gradual exposure to moisture. Past experience with similar soils indicates typical soaked CBR values of 5 to 7. We estimate that a design modulus of subgrade reaction value (k) of 150 psi/in should be available for subgrades compacted to 98 percent of the standard Proctor maximum dry density. Based on the anticipated traffic and subgrade conditions, we recommend the following for pavement thicknesses and configurations over the prepared subgrades: Walgreens — Country Club Road & Western Boulevard Titan Project No. 72025009 Jacksonville, NC 316103 THICKNESS(INCHES) PAVEMENT TYPE MATERIAL Light —Du Hea -Du Concrete (4,000psi) 5 6 Rigid Crushed Stone (Optional) CDOTT eAorB 4 4 Asphalt Concrete CDOT T e 5-9.5B surface course 1.5 1.5 Asphalt Concrete 2 2 Flexible CDOT T e I-19.OB binder course Crushed Stone CDOT Type A or B 6 8 Light -duty pavements should be designated for car parking areas. Heavy-duty pavement sections should be designated for the entrances and exits, driveways, truck lanes, and areas in front of loading docks and dumpsters, per Walgreens criteria. The final design pavement thicknesses should not be less than the Walgreens minimum specifications of compacted thicknesses of 2 inches binder course and 1.5 inches surface course. Pavements and bases should be constructed in accordance with the guidelines of the latest applicable "Standard -Specifications for Roads and Structures", North Carolina Department of Transportation. Materials, weather limitations, placement, and compaction are specified under appropriate sections of this publication. Prevention of infiltration of water into the subgrade is essential for the successful performance of any pavement. Both the subgrade and the pavement surface should be sloped to promote surface drainage away from the pavement structure. 5.8 Seismic Site Classification In our opinion, the subsurface conditions at the project site correspond most closely with those of Site Class E as described in Section 1615.1.1 of the 2002 North Carolina State Building Code. This type of profile contains moderate plasticity clay zones greater than 10 feet thick and average standard penetration values less than 15 blows per foot. LIMITATIONS Subsurface Exploration and Conditions The boring or test pit locations and ground surface elevations given in this report should be considered accurate only to the degree implied by the methods used to determine them. The boring logs or test pit logs represent our interpretation of the subsurface conditions based on the field logs, and visual examinations of samples by an engineer, geologist, or technician, in addition to tests of the field samples. The lines designating the interfaces between various strata may be gradual. The generalized subsurface strata and profiles described in this report are intended to convey trends in subsurface conditions. The boundaries between strata are approximate and idealized. They have been developed by interpretations of widely -spaced borings; therefore, actual subsurface conditions may vary from those given between boring locations. Groundwater levels have been measured or inferred in the boreholes at the times and under the conditions stated on the boring logs. Changes in the groundwater conditions may occur due to variations in rainfall, evaporation, construction activity, surface water runoff, and other site specific factors. Our geotechnical services include storing the samples collected and making them available for inspection for 90 days. The samples are then discarded unless our client requests otherwise. The assessment of site environmental conditions or the presence of contaminants in the soil, rock, surface water or groundwater of the site was beyond the scope of this geotechnical study. Recommendations The recommendations provided in this report are based on our understanding of project information given in this report and on our interpretation of the surface and subsurface data collected. We have made our recommendations based on our experience with similar subsurface conditions -and similar projects. The recommendations apply to the specific project discussed in this report; therefore, any changes in the project information should be provided to us so we may review our conclusions and recommendations and make any appropriate modifications. Titan Atlantic Group should be retained for a general review of the design drawings and specifications to, verify that geotechnical recommendations are properly interpreted and implemented. Regardless of the thoroughness of a geotechnical study, there is always a possibility that subsurface conditions will be different from those at the boring or test pit locations, that conditions will not be as anticipated by the designers or contractors, or that the construction process will alter soil conditions. Therefore, the geotechnical engineer's representative should observe the site preparation, earthwork, foundation construction, floor slab construction, below -grade wall construction, and pavement construction to confirm that the conditions indicated by the geotechnical exploration actually exist and to certify to the owner that all earthwork was properly completed. We recommend the owner or contractor retain Titan for this service since we are already familiar with the project, the subsurface conditions, and the intent of the recommendations and design. The conclusions and recommendations provided in this report are subject to Titan personnel observing the construction procedures and' subsurface conditions encountered at the site. i t ✓ }lacksonville }Catino Ranc 1 5 SITE 72035009 LGREENS - COUNTRY CLUB ROAD&: KZ WESTERN BOULEVARD NC amJACKSONVILLE, vksidstal Ca ommuni v le V I,L�l1�1❑ ell Fork _ f a 2000 Dc rmt, Str et (Atl3s_P5A;'0 2000 GDT, Inc., Rel. 0412000 _ _ .:. �l / Mag 13.00 Tue Feb 18 11:38 2003 Local Road Q Large City Scale 1:62,500 (at center) C=== US Highway Airfield TITAN d1%rrfic 1,9tacr`i 1 Miles -� Major Connector 1% Geographic Feature Engineering, Construction and Consulting ® State + Hospital SITE LOCATION PLAN 2 KM Route O WALGREENS UkunpPipe Locale JACKSONVILLE, NC -+— Railroad Private Airport 72035009 Point of Interest I I Railroad Abandoned DRAWING NO. 1 Small Town Cemetery .1- '1 28,8.7%* E um 1� '►:�e.ea�• �e '.a♦ ems. f � •� r.e♦row ,rr• 'f r•+.. fed ery � eaaaea`]ie -/f r! �i� aea rr e•• e•i. 1 �fefOe �llO >r.�i i i�4.f Or�•OO�K�� OAi OeO .r���'•� ai••we�..�aei ari Oea�T 4•aa;•• err r'. L." 'r ice:• _Y �JIMP } wit � sr• !!. PROPOSED BUILDING : �;rmoo� / w B-2octp loll dUl f 41.J• r �' +• r a � 'ham .e .Ql. B—il y M AA A Rn •LU 4 Al* 41,12 rr.11 f � R tl IRN �.r it 5275979E rrr/sa e 0.99' u `I a•��R`hr r a r '' S67:J751'W Id 29.47' �_ • " „ N87 43 39'W R= 9777 p •` /{1 q CNn93.00' r e 0 J 4 R,144,37 � Cl, 1� R •�� �30 p J r..•hM �i0 47 TITAN�zai�/v BORING LOCATION PLAN - WALGREENS - COUNTY ENGINEERING A CONSTRUCTION A CONSULTING CLUB RD. & WESTERN BLVD. 111IEV RCW 2850WNTRLLEN9JACKSONVILLE, NC pHAX253F: ( 5330002 TITAN PROJ NO. 72035009 CHECK: CFB DRAWN: GRB DATE: 2/17/03 SCALE: 1"=60' DWG. NO. 2 :; \Titan\PfOjCC13\2002\720]5009\Boring Location.dw2 LA70l.A%JU A AVL\ J'r'LLlrl T. wrGl\l` AAllf lll/tti -uA1VTiat A'VVi 10 20 30 40 60 80 Lf r�Ir A R 0.0 0.5 I7.0 20.0 ,Topsoil a rox.6"). Stiff to very soft moist to saturated orange gray fine sandy silty CLAY (CL). Loose saturated gray clayey fine SAND (SC). Boring terminated at 20 feet. Classified By: R. BRIDGER Driller: CAROLINA DRILLING Drill Rig: TRACK RIG Boring Type: MUD ROTARY r,RniiunwAT%:R RFAniurc DATE TIME IDEPTH ELEVAi O-N STABILIZATION TIME 2,7103 - 4.0 37.9 30 HRS. _41 40.5 • • — 24 • —21 BORING LOG 10 9 3 4 2 7 BORING NUMBER B-1 DATE DRILLED 216103 PROJECT NUMBER 72035009 PROJECT WALGREENS - JACKSONVILLE, NC PAGE 1 OF I . TITAN ATLANTIC GROUP SEE KEY SHEET FOR EXPLANATION OF SYMBOLS AND ABBREVIATIONS "AioI-X%AA A AVl\ � l"GL�IGAACAAAV1V�AlrV YYJlr VVA 10 20 30 40 60 SO 8.0 12.0 20.0 To soil (ap2rox. 6" . Soft to stiff moist to saturated orange gray and brown fine sandy CLAY (CL) with trace organics to 3'. Very loose saturated gray Fine SAND (SP). Soft to firm saturated gray fine sandy CLAY (CL). Boring terminated at 20 feet. Classified By: R. BRIDGER Driller: CAROLINA DRILLING Drill Rig: TRACK RIG Boring Type: MUD ROTARY GROUNDWATER READINGS DATE TIME DEPTH ELEVATION STABILIZATION TIME 2J6103 -- 7.5' 33.8' TOB r'lldr, Y . (FF.) 41.3 40.8 -- 33.3 — 29.3 — 21.3 • • • • • • l 8 9 4 3 7 BORING LOG BORING NUMBER B-2 DATE DRILLED 2/6/03 PROJECT NUMBER 72035009 PROJECT WALGREENS - JACKSONVILLE, NC PAGE I OF I TITAN ATLANTIC GROUP SEE KEY SHEET FOR EXPLANATION OF SYMBOLS AND ABBREVIATIONS 1JL' Jl.; K1Y 11 WIN llJh;l;'1'ri o.a 0.5 8.0 12.0 17.0 20.0 To soil (app— 6" . Firm to very soft moist to saturated orange brown and gray Pine sandy CLAY (CL). Very loose saturated gray fine SAND (SP). Very soft saturated gray silty CLAY (CH). Firm saturated light gray slightly fine sandy CLAY (CL). Boring terminated at 20 feet. Classified By: R. BRIDGER Driller: CAROLINA DRILLING Drill Rig: CME 45 D Boring Type: MUD ROTARY (1PMHA1r1WeTB0 orAnwn_c DATE TIME DEPTH ELEVATION STAWLIZATION TIME znroa s.o ]5.B' Toa r,l.,l�V. � Yl:,tVC,1KAl1V1V-13LVYY�3l1'VV1 (Fr.) 10 20 30 40 60 80 41.8 41.3 — 33.8 — 29.8 — 24.8 — 21.8 c • BORING LOG 6 6 2 2 0 5 BORING NUMBER B-3 DATE DRILLED 2/7/03 PROJECT NUMBER 72035009 PROJECT WALGREENS - JACKSONVILLE, NC PAGE 1 OF I TITAN ATLANTIC GROUP SEE KEY SHEET FOR EXPLANATION OF SYMBOLS AND ABBREVIATIONS 3.0 12.0 17.0 20.0 "r01' Lr AAXJL4 To soil (approx. 6"). Logse moist orange brown clayey fine SAND (SC). Firm to very soft moist to saturated orange brown and gray fine sandy CLAY (CL). Very loose saturated gray fine SAND (SP). Very soft saturated gray fine sandy CLAY (CL). Boring terminated at 20 feet. Classified By: R. BRIDGER Driller: CAROLINA DRILLING Drill Rig: CME 45 D Boring Type: MUD ROTARY rPnijmnwATrM ai=eninrr_c DATE TIME DEPTH ELEVATION STABILIZATION TIME 2f7103 — 8.5' 34,5' TOB rl1r,V. W rr 4r,1KH11vty-DLVYrJlrVVi Mr.) 10 20 30 40 60 80 — 43 42.5 • — 40 • • • —31 • — 26 • — 23 BORING LOG 8 5 5 2 4 1 2 1 BORING NUMBER B-4 DATE DRILLED 2/7/03 PROJECT NUMBER 72035009 PROTECT WALGREENS - JACKSONVILLE, NC PAGE I OF 1 TITAN ATLANTIC GROUP SEE KEY SHEET FOR EXPLANATION OF SYMBOLS AND ABBREVIATIONS IJES(:RIVI'10N La,LEV. k'JC.1VC.liCAllVtr - ni.vvr�rrvvi (Fr.)' 10 20 30 40 60 80 DEPTH (FT.)' 0.0 0.5 8.0 12.0 17.0 20.0 ,Topsoil (ap2rox. 6" . Firm to soft moist to saturated orange brown and gray fine sandy CLAY (CL). Very loose to loose saturated gray tan fine SAND (SP). Very soft saturated gray silty CLAY (CH). Soft saturated gray fine sandy CLAY (CL). Boring terminated at 20 feet. Classified By: R. BRIDGER Driller: CAROLINA DRILLING Drill Rig: CME 45 D Boring Type: MUD ROTARY GROLINOWATFR RFAOIN(:S DATE T{ME DEPTH ELEVATION STABILIZATION TIME 2f7t03 3.5' 371r 4 HRS. 41.3 40.8 — 33.3 — 29.3 — 24.3 I • — 21.3 BORING LOG 8 6 4 3 1 3 M' BORING NUMBER B-5 DATE DRILLED 2/7/03 PROJECT NUMBER 72035009 PROJECT WALGREENS - JACKSONVILLE, NC PAGE 1 OF 1 TITAN ATLANTIC GROUP SEE KEY SHEET FOR EXPLANATION OF SYMBOLS AND ABBREVIATIONS 3.0 5.0 1J1r.7l�it.l.0 it LvjN ,Topsoil (approx. 6" . Medium dense moist brown gray clayey fine SAND (SC). Firm moist to saturated orange gray and brown fine sandy CLAY (CL). Boring terminated at 5 feet. L,Ln V . (FT.) .) _ 42 41.5 — 39 — 37 W X-jr, 4.C.1 r-n a1V1m-17L11 ►7 aI r llV1 10 20 30 40' 60 80 • • g Classified By: R. BRIDGER BORING LOG Driller: CAROLINA DRILLING Drill Rig: TRACK RIG BORING NUMBER B-6 Boring Type: MUD ROTARY DATE DRILLED 2/6/03 GROUNDWATER REAOINGS PROJECT NUMBER 72035009 DATE TIME DEPTH ELEVATION STABILIZATION TIME PROJECT WALGREENS - JACKSONVILLE, NC - PAGE I OF I TITAN ATLANTIC GROUP SEE KEY SHEET FOR EXPLANATION OF SYMBOLS AND ABBREVIATIONS LIiJLlllr 11VL 4 5.0 To soil a rox. 6"). Firm moist orange gray and brown fine sandy CLAY (CL). Boring terminated at 5 Feet. I Classified By: R. BRIDGER Driller: CAROLINA DRILLING Drill Rig: CME 45 D Boring Type: MUD ROTARY GROUNDWATER READINGS DATE TIME DEPTH ELEVATION STABILIZATION TIME SEE KEY SHEET FOR EXPLANATION OF SYMBOLS AND ABBREVIATIONS BLrl V . (Fr.) 42.3 41.8 — 37.3 � rrGl\r.12CAllViv - riLVYYJIi'iJL11 10 20 30 40 60 80 • • BORING LOG 7 7 BORING NUMBER B-7 DATE DRILLED 2/7/03 PROJECT NUMBER 72035009 PROJECT WALGREENS - JACKSONVILLE, NC PAGE I OF 1 TITAN ATLANTIC GROUP lJr:r 1Il a�i:ti7�.i�lr 11V1r (FT.) r,ir, r - (F T.) 0.0 0.2 0.8 3.0 5.0 s halt (approx. 1.5"). C stone a rox. 8"). Loose moist gray brown fine SAND (SP). Soft moist to saturated orange gray and brown fine sandy CLAY (CL). Boring terminated at 5 feet. Classified By: R. BRIDGER Driller: CAROLINA DRILLING Drill Rig: CME 45 D Boring Type; MUD ROTARY GROUNDWATER READINGS DATE TIME DEPTH ELEVATION STABILIZATION TIME SEE KEY SHEET FOR EXPLANATION OF SYMBOLS AND ABBREVIATIONS —41.5 — 41.3 40.7 — 38.5 — 36.5 W rr,trr,lr:r►1IVIl-Divvva/rVV1 10 20 30 40 60 80 BORING LOG 3 7 BORING NUMBER B-8 DATE DULLED 2n103 PROJECT NUMBER 72035009 PROJECT WALGREENS - JACKSONVILLE, NC PAGE 1 OF 1 TITAN ATLANTIC GROUP UrX1n . . (F t.). Lyre al...ralr 11V1V : rr.1VISRKA11V1'V-131,VYr,1rVV1 10 20 30 40 60 80 0.0 0.5 5.0 -,Topsoil (approx. 6" . Very soft to stiff moist orange brown fine sandy CLAY (CL) with organics. Boring terminated at 5 feet. Classified By: R. BRIDGER Driller. CAROLINA DRILLING Drill Rig: TRACK RIG Boring Type: MUD ROTARY GROUNDWATER READINGS DATE TIME DEPTH ELEVATION STABILIZATION TIME SEE KEY SHEET FOR EXPLANATION OF SYMBOLS AND ABBREVIATIONS Ei1r, V . (Fr.) 40.7 -- 36.2 • BORING LOG 1 14 BORING NU11�1BER B-10 DATE DRILLED 2/6/03 PROJECT NUMBER 72035009 PROJECT WALGREENS - JACKSONVILLE, NC PAGE 1 OF 1 TITAN ATLANTIC GROUP Walgreens-Country Club Road & Western Boulevard Jacksonville, NC Titan Project No. 72025009 2111103 FOOTING DEPTH BELOW PENETROMETER DESIGNATION EXISTING GRADE VALUE [We B-11 1.0 2.0 3.0 4.0 5.0 1.0 2.0 3.0 4.0 5.0 6-8-12 11-13-14 9-13-15+ 3-4-5 3-3-5 6-7-8 8-8-8 11-12-12 7-8-9 5-6-7 COMMENTS 0 to 1 foot —Topsoil 1 to 3 feet — orange gray clayey fine SAND (SC) 3 to 5 feet — orange gray fine sandy CLAY (CL) 0 to I foot — Topsoil 1 to 5 feet — gray orange and brown fine sandy CLAY (CL) RESPECTFULLY SUBMITTED TITAN ATLANTIC TiTAN,d&a,t&. �um Engineering, Construction and Consulting KEY TO SOIL CLASSIFICATION Correlation of Penetration Resistance with Relative Densitv and Consistent Sands and Gravels Silts and Clays No. of Relative No. of Blows. N Density Blows, N 0-4 Very Loose 0-2 5 — 10 Loose 3-4 It — 30 Medium Dense 5-8 31 —50 Dense 9 — 15 Over 50 Very Dense 16 — 30 31 —50 Over 50 Particle Size Identification (Unified Classification System) Boulders: Diameter exceeds 12 inches Cobbles: 3 to 12 inches diameter Gravel: Coarse - 19.0 mtn to 75 mm diameter Fine - 4.75 mm to 19.0 mm diameter Sand: Coarse - 2.00 mm to 4.75 mm diameter Medium - 0.425 mm to 2.00 mm diameter Fine - 0.075 mm to 0.425 aim diameter Consistency Very Soft Soft Firm Stiff Very Stiff Hard Very Hard Silt and Clay: Less than 0.075 mm (particles cannot be seen with the naked eye) Modifiers The modifiers provided our estimate of the amount of fines (silt or clay size particles) in the soil sample. Approximate Fines Content Modifiers 5% to 12% Fines Slightly silty or slightly clayey >12% Fines Silty orclayey TITAN Engineering, Construction and Consulting SOIL CLASSIFICATION SYSTEM GROUP MAJOR DIVISIONS TYPICAL NAMES SYMBOL CLEAN GW Well graded gravels GRAVELS GRAVELS (little or no fines) GP Poorly graded gravels (More than 50% r of coarse fraction O C) larger than GRAVELS GPI Silty gravels ❑ (D No. 4 Sieve) (with fines) U GC Clayey gravels CLEAN SW Well graded sands kn o U r`t r z SANDS SANDS L (little or C ° ? (More than 50% no fines) SP Poorly graded sands of coarse fraction Silty sands, sand -silt smaller than SANDS Sal mixtures No. 4 Sieve) (with fines) Clayey sands, sand -clay SC mixtures � 2 SILTS AND CLAYS NIL Silts, sandy clayey 0— , ? silts with slightt plasticity Cn ❑ (AaD U0 (Liquid Limit < 50) CL Silty clays with U z�� o . low plasticity t o 2 SILTS AND CLAYS MH Silts or clayey silts with U high plasticity v z ° = (Liquid Limit > 50} CH Clays, silty clays with high plasticity PT HIGHLY ORGANIC SOILS OH Peat or other highly organic soils OL 1 I 1-C «Vest Fire Tosser Road • Greenville, NC 28590 + Phone: (2-52) 353-1600 • Fax: (252) 353-0002 Symbol Description Strata s bols j]'Jf High plasticity clay Low plasticity clay Fill Poorly graded g l..tis ® Elastic silt ® Silt High plasticity .`' organic clays Low plasticity organic silts Basalt (or .generic roc Silty sand Poorly graded s Well graded san Q a 0 Agglomerate s� Claystone r Cobbles Competent Dolomite �~ Frac rock KEY TO SYMBOLS Symbol Description Symbol Description Granite Misc. Symbols Yi yA '' Q Water level at �•` Gravel Y time of boring - Stabilized water level Intrusive . ; x Additional water level Limestone ravel Soil Samplers Metamorphic rocks Standard penetra- tion test Mudstone Bulk/Grab sample Organics - Undisturbed thin ■ Paving wall Shelby tube Rock core Peat k) --. Sand Sandstone and Schist d Sediment Shale Shell Dv- fragments Siltstone Topsoil Weathered 4 1270 (W o s�,d) 3a 53 %'roV �%� 2/e2 = 33 2 7? Zc, �o 05 1- , cam► 1 C-7g 26 703 SA-p14 = b Lj 0. POP C04 1 032 IZ x ,7Co3�j 7(93c.) I4(A f+3 j fiy wi�-�ti Prw = Z�' aIL L A, , A l��-Gv, — I go oJC poo 6(4 I -(Z x,6,33)�z { -7c�lvg t{o , 6,38) JC -3 x '1(c( il� .. i r � . �: 'i • h -. _ .�„ .r�, - � ,k ,� �_ �' �c � � � �1 � � 1 . _ � p� {�l {. 7 � �� �iX t� i 1 ,r , `, T`, �1 ' f � � � ir. . �� i111. !' .. 1. _ .��.� • .� .� ,. _ .. ��E i�. ,, RECEIVED MAY 0 12003 DwQ Jacksonville Walgreen's AL PRoa # � j U 30 SCE ¢ Stormwater Management Plan Jacksonville North Carolina �: :'7f y NGINE.• 03 February 18, 2003 '•y�iQj I!!!f!1l111titi�` Site Description The proposed Jacksonville Walgreen's is sited on a 1.8 acre tract of land located at 359 Western Boulevard Jacksonville, North Carolina. The site topography is flat, which is typical of the area . The site is urban with storm drains to collect runoff. Soils consist Goldsboro, a fine sandy loam in hydrology group C. Bioretention According to the NCDENR "Stormwater Best Management Practices" Manual Bioretention cells achieve a removal rate of 85% for total suspended solids. Bioretention areas are intended to address the spatial constraints that can be found in intensely developed urban areas where the drainage areas are highly impervious. Bioretention is a water quality practice using plants and soils for the removal of pollutants from stormwater runoff. One bioretention cell is proposed to treat the runoff from the site. The runoff from the proposed parking area and building drains to the bioretention area. It is irregularly shaped with an area of 4,033 square feet and a storage depth of 6"I'lThe runoff flows into the Bioretention area through a riprap energy dissipator to slow it to non -erosive velocities. The detention area was sized to treat the "first flush" of rainfall through infiltration, transpiration, evaporation, storage, and nutrient uptake. Any storm in excess of this event is released through the 15" outlet set d" above the bottom of the cell. Bioretention Area Maintenance: Vegetation shall be inspected twice annually. Remove/replace dead or diseased plants. Also remove unwanted additional growth, such as weeds. 2. Remulch as necessary. 3. Once or twice annually, test the soil for pH and toxics. Lime should be added as needed to increase pH. Soil should be replaced if toxics exist. 4. Remove trash and debris as necessary. See Bioretention Area Maintenance Agreement for more detailed recommendations. Stormwater Detention • At the request of the City of Jacksonville, the bioretention area was modeled as a detention pond to investigate its attenuating capabilities on the peak flow for a 25 year storm. An SCS TR-20 Type H storm hydrograph with 8" of rainfall was used to simulate the 25 year storm. The stormwater model indicated that the predeveloped peak flow leaving the site was 7 cfs. Modeling the storm under post developed conditions and running the stormwater through the bioretentionldetention area yielded a peak flow of 5 cfs. The peak flow was effectively attenuated to less than predeveloped conditions. Calculations are attached. • CJ P Bioretention Area Sizing Calculations Job: Jacksonville Walgreens Calculated by: EJF Date: 2/18/2003 Area C Development (Sq. Ft.) Factor C x Area Impervious 57,015 0.9 51,314 Green 14,915 0.25 3,729 Totals 71,930 55,042 Bioretention Area Size 1. With sand bed (5% sum of C x Area) 2. Without sand bed (7% sum of C x Area) Bioretention Area Provided RECEIVED f�O.2o 2003 DWQ PROJ # _ Yo 30504 _. 4 S 1554 C� r umNN►►`'`, 2,752 Sq. Ft. 3,853 Sq. Ft. 4,033 Sq. Ft. RIVERS & ASSOCIATES, INC. Engineers/Planners/Surveyors 107 E. 2nd Street P.O. Box 929 GREENVILLE, NORTH CAROLINA 27835 (252) 752.4135 FAX (252) 752-3974 "DW 2D1-1 jSrV %Ms) 2D5-1,PlMtd} JOa�c9SotJyi SHEET NO. OF CALCULATED 8Y !.�T -7 F— DATE CHECKED BY L?.Tw. HATE Jacksonville Bloretention Type 1124-hrRainfall=&00" Prepared by Rivers and Associates, Inc. Page 1 HydroCAD® 6.00_s1n 001529 © 1.986-2001 Applied Microcomputer Systems 9/24/2003 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Type 11 24-hr Rainfall=8.00" Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Predeveloped Subcatchment 2S: Post Developed Tc=35.2 min CN=79 Area=1,650 ac Runoff= 7.05 cfs 0.701 of Tc=16.4 min CN=94 Area=1.650 ac Runoff= 13.33 cfs 0.929 of Pond 1 P: Bioretention Peak Storage= 15,388 cf Inflow= 13.33 cfs 0.929 of Primary= 5.56 cfs 0.825 of Outflow= 5.56 cfs 0.825 of Runoff Area = 3.300 ac Volume = 1.630 of Average Depth = 5.93" Jacksonville Bioretention Type l! 24-hr Rainfall=8.00° Prepared by Rivers and Associates, Inc. Page 2 HydroCADO 6.00 sln 001529 © 1986-2001 Applied Microcomputer Systems 9/24/2003 Subcatchment 1 S: Predeveloped Runoff = 7.05 cfs @ 12.30 hrs, Volume= 0.701 of Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr Rainfall=8.00" Area (ac) CN Description 1.650 79 50-75% Grass cover, Fair, HSG C Tc Length Slope Velocity Capacity Description (min) (feet)_ (fUft) (fUsec) _ (cfs) 35.2 400 0.0020 0.2 Lag1CN Method, Subcatchment 1S: Predeveloped Hydrograph Plot H V O LL 7.05 cfs .__...... .... ------------- Z... ..... _...- 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) — Runoff r Jacksonville Bioretention Type II 24-hrRainfall=8.00" Prepared by Rivers and Associates, Inc. Page 3 HydroCADO 6.00 sln 001529 O 1986-2001 Applied Microcomputer Systems 9/24/2003 Subcatchment 2S: Post Developed Runoff = 13.33 cfs @ 12.08 hrs, Volume= 0.929 of Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr Rainfall=8.00" Area (ac) CN Description _ 1.650 94 Urban commercial, 85% imp, HSG C Tc Length Slope Velocity Capacity Description (min) (feet) (ftlft) (ftlsec) (cfs) 16A 400 0.0030 0.4 Lag/CN Method, 1 1 1 1 1 Subcatchment 2S: Post Developed Hydrograph Plot - - ;- - ;...__.._:;... - 13.33cfs ----- --- ---- - N V f V iV if c fV fJ — 11 iV is cV Time (hours) - Runoff Jacksonville Bioretention Type 1124-hr Rainfall=8.00" Prepared by Rivers and Associates, Inc. Page 4 H droCADO 6.00 s/n 001529 © 1986-2001 Applied Microcomputer Systems 9/24/2003 Pond 1 P: Bioretention Inflow = 13.33 cfs @ 12.08 hrs, Volume= 0.929 of Outflow - 5.56 cfs @ 12.29 hrs, Volume= 0.825 af, Atten= 58%, Lag= 12.7 min Primary = 5.56 cfs @ 12.29 hrs, Volume= 0.825 of Routing by Star -Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 39.67' Storage= 15,388 cf Plug -Flow detention time= 92.7 min calculated for 0.822 of (88% of inflow) Storage and wetted areas determined by Prismatic sections Elevation Surf.Area Inc.Store Cum.Store (feed__ _(sq-ft) (cubic -feet) (cubic -feet) 37.00 4,033 0 0 38.00 5,255 4,644 4,644 39.00 6,535 5,895 10,539 40.00 7,871 7,203 17,742 Primary OutFlow (Free Discharge) L1=Culvert _ # Routine Invert Outlet Devices 1 Primary 37.75' 15.0" x 280.0' long Culvert RCP, groove end projecting, Ke= 0.200 Outlet Invert= 35.96' S= 0.0064 T n= 0.013 Cc= 0.900 1 1 1 1 1 Pond 1 P: Bioretention Hydrograph Plot 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) — Inflow — Primary Jacksonville Bioretention Type It 24-hr Rainfall=8.00" Prepared by Rivers and Associates, Inc. Page 5 HydroCADO 6.00 sln 001529 ©1986-2001 Applied Microcomputer Systems 9/24/2003 Pond 1 P: Bioretention Stage -Discharge m a C O N lL ul 39- .....----------------- ; ---------------- - 38- ......------------------ .._.._.... �Culvert.� 37- 0 1 2 3 4 5 Discharge (cfs) Pond 1 P: Bioretention Stage -Area -Storage Surface[Wetted Area (sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,500 6,000 6,500 7,000 7,500 l0- 38- .... -- ---- - - ----- 37 2,000 4.000 61000 8,000 10,000 12,000 14.000 16.000 Storage (cubic -feet) — Primary -- Surface -- Storage 11M - 4 200J Soil. & Environmental Consultants, PA I1010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: (919) 846-5900 • Fax: (919) 846-9467 L www.SandEC.com March 21, 2003 #03-7761 Rivers & Associates Attn: Dwight Vernelson P.O. Box 929 Greenville, N.C. 27835 Fax: (252) 752-4135 Re: Detailed Wetland Delineation for the Jacksonville Walgreens Site, Jacksonville, Onslo_w County, North Carolina. Dear Mr. Vernelson: On March 18,2003, S&EC conducted a detailed wetland delineation on the Jacksonville Walgreens Site. The property is located north of Memorial Drive, south of Country Club Drive, and west of Western Boulevard in Jacksonville, North Carolina. Figure 1 shows the location of the site on a USGS topographic quadrangle. Wetlands: Potential wetland areas on the site were evaluated for the presence of hydric soils and evidence of hydrology and vegetation. In these areas, hydrologic proof would be in the existence of hydric soils with oxidized root channels in the upper 12 inches of the "A" horizon. Other indicators of hydrology include; water borne deposits, drift -.lines, scour marks, and regional indicators of soil saturation, etc. We have determined that no jurisdictional wetlands or other Waters of the US (i.e., streams, ponds or lakes) exist on the site. Information regarding this site will be sent to the US Army Corps of Engineers (USACE) to' obtain a jurisdictional determination (tear sheet) that confirms that no jurisdictional features are on the property, In order to obtain the jurisdictional determination from the USACE we must have agent authorization (see attached Agent Authorization). This authorization form must be filled out in its entirety by the current landowner and sent to S&EC (a faxed copy is acceptable). If you have any questions or require further information please email me at SC1ar1: ci>SandEC.com or call. Sincerely, Sean Clark Charlotte Office: Qreenso Qff_fic: fIickory_Office: 236 LePhillip Court, Suite C 3817-E Lawndale Drive 622 Coon Mountain Lane Concord, NC 28025 Greensboro, NC 27455 'Iaylorsville, NC 28681 Phone: (704) 720-9405 Phone: (336) 540-8234 Phone (828) 635-5820 Fax: (704)720-9406 Fax: (336)540-8235 Fax: (828)635-5820 1 July 14, 2003 LRC Realty Inc. 1585 Frederick Boulevard Akron, Ohio 44320 Attention: Mr. David Craine Subject; Geotechn'tcal Engineering Report — Addendum IV Walgreens — Country Chub Road & W&.stern Boulevard Jacksonville, North Carolina Titan Project No. 72035009 Dear Mr. Craine: A Irerrecon Company 11)-C Weak Fire Tower Road WIn(ervtllB, North Carolina 28500 (252) 353.1800 Fax: (262) 353-0002 Titan Atlantic Group, Inc. (Titan) is pleased to present this Geotechnical Engineering Report •-- Addendum IV for the proposed retail building in ,lacks nville, North Carolina. Findings, conclusions, and reconunendation, given in this report are subject to the hi-nitations presented in the Appendix of our original report. As requested by Mr. Dwight Vernelson, representing Rivers &; Associates, Inc., a Titan representative was present on site July 11, 2003 to determine: if 5rour)dwater levels in the area of'the proposed detention/retention pond were within 6 feet of the g mind.'surface. A hand auger was used to bore. to depths of six feet below the existing ground surface in the areas of Borings .B-9 and B-11, as indicated on the attached drawing. Groundwater was not encounLcrcd to depths augered. Please contact us il' you have any questions or comments rugardinb this addendum letter. We are available to provide additional services as necessary during the final design and construction phases of this project. As always, we have enjoyed assisting; you and look fonvard to serving as your consultant on the remainder of this project and future projects. Sincerely, TITAN ATLANTIC GROUT', INC. G. Ryan Bridger, Staff Geotechnical Professional Carl F. Benner, P.E. Greenville Office Manager Registered, North Carolina 16252 N:1Ry3n!,Pruicct;L()03172U35009 Walgreens-Cuuniry Club Di & Wcs[ern Blvd-JUcJisonville,NClAddcl(idunl lV,dnc cc: Dwieh[ VCI IIC(icm 50 SEAL 16252 z NEB�.1 �����a�trrtrttt�t' Arizona 0 Arkansux 19 Cekllornia 0 Colorado a Georgla 10 laaho p pllncis W Iowa k&Kansaa a Xotilucky p Minnatola 4 Mleeourl Montana t Nebraska 1 Nevada I New Mexico I North Carolina I0klahoms I Tennessee 176ag if Ulah I Wileb'On 1 Wyoming consulting Friginaors & sclonl)sis s[nca 196s www,fa►racon,cunr•• ac lio ICA! 4P.;j v 44 v Lyj AV Z�- 08. J�), 9 TA Mv 4pj� AJ91 A*1 p FA , Yx 44 AN Av B-4 .4 IF, 41.4 G cvmc pu I a FA -en3 As 1 .07 4 Q Gh v. Fil "A UUMNG IL' .r>< zr` 1 N'�� `, \ �'�ir r�JW' �� r. �.3 I � `} r fo, 0 "-fin 11 TA di ej 1— 3-61 % A Utii law rA cy" A soj oa 4 7' xl'o ch=, 9.3. 00' r{}Of 0 BORING LOCATION PLAN i. WALaREENS TYFAN ,PlWalrdic, COUNTY T NGINEE RING A CONSTRUCTION 4 CONSULTING CLUB RI). & WESTERN BLVD1 111—C' WEST FIRETOWER ROAD WINTERV� 11 LE NC 28590 JACKSONVILLE, NC' PHONE: 2,52) 353-1600 PAX: (252), 353-0002 FITAN PROIJ NO, 72035009 CBECK: CFB E—[ DRAWN: GIRB I DATE: 2/17/03 S C A 1, : 1Q' DWG. NO. I TOTRL P.03 Yahoo! Maps and Driving Directions Page 1 of 1 GeMocal Ma ps Yahoo! Maps Back to Map * Jacksonville, NC When using any driving directions or map, it's a good idea to do a reality check and make sure the road still exists, watch out for construction, and follow all traffic safety precautions. This is only to be used as an aid in planning. Copyright m 2003 Yahoo! Inc. All rights reserved. Privacy Policy Terms of Service - CnpyrigM Policy.- Yahool Maps Terms of Use - Halp -Ad Fee back http://maps.yahoo.com/py/pmaps.py?Pyt=Tmap&ed=Da7VgOp_OTpHeYinV 1 qS 1 QUcJ6... 7/21/2003