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MONTGOMERY COLLEGE PROJECT #FP16-077MONTGOMERY COLLEGE BUILDING #319MHEC PROJECT #CC-01-MC16-458SMITHGROUP #12543.000MONTGOMERY COLLEGELEGGETT BUILDINGISSUED FOR DESIGN DEVELOPMENT - GMP3, GMP427 SEPTEMBER 2019DIVISION 23 - HEATING, VENTILATING, AND AIR-CONDITIONING (HVAC)(CONTINUEDSECTION 232123 - HYDRONIC PUMPSSECTION 232300 - REFRIGERANT PIPINGSECTION 232516 - WATER TREATMENT FOR OPEN-LOOP HYDRONIC SYSTEMSSECTION 233113 - METAL DUCTSSECTION 233300 - AIR DUCT ACCESSORIESSECTION 233416 - CENTRIFUGAL HVAC FANSSECTION 233423 - HVAC POWER VENTILATORSSECTION 233600 - AIR TERMINAL UNITSSECTION 233713.13 - AIR DIFUSERSSECTION 233713.23 - AIR REGISTERS, AND GRILLESSECTION 235100 - BREECHINGS, CHIMNEYS, AND STACKSSECTION 235216 - CONDENSING BOILERSSECTION 236426.16 - WATER-COOLED, ROTARY-SCREW WATER CHILLERSSECTION 236514.13 - OPEN-CIRCUIT, INDUCED-DRAFT, COUNTERFLOW COOLING TOWERSSECTION 237323 - CUSTOM, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITSSECTION 238123.11 - SMALL CAPACITY (6 TONS (21 KW) AND SMALLER), COMPUTER-ROOMAIR-CONDITIONERS, FLOOR-MOUNTED UNITSSECTION 238126 - SPLIT-SYSTEM AIR-CONDITIONERSSECTION 238219 - FAN COIL UNITSSECTION 238239.13 - CABINET UNIT HEATERSSECTION 238239.19 - WALL AND CEILING UNIT HEATERSDIVISION 25 - INTEGRATED AUTOMATIONNOT APPLICABLEDIVISION 26 - ELECTRICALSECTION 260513 - MEDIUM-VOLTAGE CABLESSECTION 260519 - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLESSECTION 260523 - CONTROL-VOLTAGE ELECTRICAL POWER CABLESSECTION 260526 - GROUNDING AND BONDING FOR ELECTRICAL SYSTEMSSECTION 260529 - HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMSSECTION 260533 - RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMSSECTION 260536 - CABLE TRAYS FOR ELECTRICAL SYSTEMSSECTION 260539 - UNDERFLOOR RACEWAYS FOR ELECTRICAL SYSTEMSSECTION 260543 - UNDERGROUND DUCTS AND RACEWAYS FOR ELECTRICAL SYSTEMSSECTION 260544 - SLEEVES AND SLEEVE SEALS FOR ELECTRICAL RACEWAYS AND CABLINGSECTION 260548 - VIBRATION AND SEISMIC CONTROLS FOR ELECTRICAL SYSTEMSSECTION 260548.16 - SEISMIC CONTROLS FOR ELECTRICAL SYSTEMSSECTION 260553 - IDENTIFICATION FOR ELECTRICAL SYSTEMSSECTION 260573.13 - SHORT-CIRCUIT STUDIESSECTION 260573.16 - COORDINATION STUDIESSECTION 260573.19 - ARC-FLASH HAZARD ANALYSISSECTION 260800 - COMMISSIONING OF ELECTRICAL SYSTEMSSECTION 260913 - ELECTRICAL POWER MONITORING AND CONTROLSECTION 260923 - LIGHTING CONTROL DEVICESSECTION 260933 - CENTRAL DIMMING CONTROLSSECTION 260936 - MODULAR DIMMING CONTROLSTable of ContentsTOC - 6

MONTGOMERY COLLEGE PROJECT #FP16-077MONTGOMERY COLLEGE BUILDING #319MHEC PROJECT #CC-01-MC16-458SMITHGROUP #12543.000MONTGOMERY COLLEGELEGGETT BUILDINGISSUED FOR DESIGN DEVELOPMENT - GMP3, GMP427 SEPTEMBER 2019DIVISION 26 – ELECTRICAL (CONTINUED)SECTION 260936.19 - STANDALONE MULTIPRESET MODULAR DIMMING CONTROLSSECTION 260943.16 - ADDRESSABLE-LUMINAIRE LIGHTING CONTROLSSECTION 262200 - LOW-VOLTAGE TRANSFORMERSSECTION 262413 - SWITCHBOARDSSECTION 262416 - PANELBOARDSSECTION 262713 - ELECTRICITY METERINGSECTION 262726 - WIRING DEVICESSECTION 262813 - FUSESSECTION 262816 - ENCLOSED SWITCHES AND CIRCUIT BREAKERSSECTION 262913.03 – MANUAL AND MAGNETIC MOTOR CONTROLSSECTION 262913.06 – SOFT START MOTOR CONTROLSSECTION 262923 - VARIABLE-FREQUENCY MOTOR CONTROLLERSSECTION 263100 - PHOTOVOLTAIC COLLECTORSSECTION 263213.16 - GASEOUS EMERGENCY ENGINE GENERATORSSECTION 263353 - STATIC UNINTERRUPTIBLE POWER SUPPLYSECTION 263600 - TRANSFER SWITCHESSECTION 264113 - LIGHTNING PROTECTION FOR STRUCTURESSECTION 264313 - SURGE PROTECTION FOR LOW-VOLTAGE ELECTRICAL POWER CIRCUITSSECTION 265100 - INTERIOR LIGHTINGSECTION 265119 - LED INTERIOR LIGHTINGSECTION 265219 - EMERGENCY AND EXIT LIGHTINGSECTION 265613 - LIGHTING POLES AND STANDARDSSECTION 265619 - LED EXTERIOR LIGHTINGDIVISION 27 - COMMUNICATIONSSECTION 270528 SECTION 271100 SECTION 271300 SECTION 271500 SECTION 273226 SECTION 275319 -PATHWAYS FOR COMMUNICATIONS SYSTEMSCOMMUNICATIONS EQUIPMENT ROOMSCOMMUNICATIONS BACKBONE CABLINGCOMMUNICATIONS HORIZONTAL CABLINGEMERGENCY TELEPHONESDISTRIBUTED ANTENNA SYSTEMDIVISION 28 - ELECTRONIC SAFETY AND SECURITYSECTION 281000 – ACCESS CONTROLSECTION 284621.11 - ADDRESSABLE FIRE-ALARM SYSTEMSDIVISIONS 31 - EARTHWORKNOT APPLICABLEDIVISION 32 - EXTERIOR IMPROVEMENTSSECTION 321216 – ASPHALT PAVINGSECTION 321313 – CONCRETE PAVINGSECTION 321373 – CONCRETE PAVING JOINT SEALANTSSECTION 321713 – PARKING BUMPERSSECTION 321723 – PAVEMENT MARKINGSSECTION 321726 – TACTILE WARNING SURFACES - CIVILTable of ContentsTOC - 7

MONTGOMERY COLLEGE PROJECT #FP16-077MONTGOMERY COLLEGE BUILDING #319MHEC PROJECT #CC-01-MC16-458SMITHGROUP #12543.000MONTGOMERY COLLEGELEGGETT BUILDINGISSUED FOR DESIGN DEVELOPMENT - GMP3, GMP427 SEPTEMBER 2019DIVISION 32 - EXTERIOR IMPROVEMENTS (CONTINUED)SECTION 321726 – TACTILE WARNING SURFACES - LANDSCAPINGSECTION 323116 – WELDED WIRE FENCESSECTION 329113 – SOIL PREPARATIONSECTION 329200 – TURF AND GRASSESSECTION 329300 - PLANTSDIVISION 33 - UTILITIESSECTION 334200 – STORMWATER CONVEYANCEDIVISIONS 34 - 48NOT APPLICABLEEND OF TABLE OF CONTENTSTable of ContentsTOC - 8

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REVISION NO. 2 - GEOTECHNICAL REPORTThe Catherine and Isiah Leggett BuildingMontgomery College7600 Takoma AvenueTakoma Park, MarylandSchnabel Engineering DC, Inc.CBE License No. L22053052020Schnabel Reference: 18C41041June 24, 2019

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SmithGroupThe Catherine and Isiah Leggett BuildingREVISION NO. 2 - GEOTECHNICAL ENGINEERING REPORTTHE CATHERINE AND ISIAH LEGGETT BUILDINGTAKOMA PARK, MARYLANDTABLE OF CONTENTS1.0EXECUTIVE SUMMARY . 12.0SCOPE OF SERVICES . 33.0DESCRIPTION OF SITE AND PROPOSED CONSTRUCTION . 43.13.24.0SUBSURFACE EXPLORATION PROGRAM . 54.14.25.0Site Geology. 7Generalized Subsurface Stratigraphy . 7Groundwater . 9In-Situ Infiltration Test Results . 10USDA Classification and Correlated Infiltration Rates . 11Seismic Site Classification . 12SITE GRADING AND EARTHWORK . 136.16.26.37.0Subsurface Exploration and Field Testing . 5Laboratory Testing . 6SITE GEOLOGY AND SUBSURFACE CONDITIONS . 75.15.25.35.45.55.66.0Site Description . 4Proposed Construction . 4Preparation of Subgrades to Receive Compacted Fill . 13Compacted Fill . 14Fill Settlement . 15FOUNDATION RECOMMENDATIONS . 167.1Spread Footings . 168.0FLOOR SLAB RECOMMENDATIONS . 179.0RETAINING STRUCTURE RECOMMENDATIONS . 189.19.2June 24, 2019Project 18C41041Below-Grade Walls . 18Backfill for Below-Grade Walls . 18Page iSchnabel Engineering DC, Inc. 2019 All Rights Reserved

SmithGroupThe Catherine and Isiah Leggett Building10.0SUBDRAINAGE RECOMMENDATIONS. 1910.110.211.0Subdrainage for Below-Grade Walls. 19Basement Subdrainage . 19CONSTRUCTION CONSIDERATIONS . 2111.111.211.311.411.5Site Grading and Earthwork . 21Foundations . 21Construction Dewatering . 21Subdrainage . 22Engineering Services During Construction . 2212.0GENERAL SPECIFICATION RECOMMENDATIONS . 2313.0LIMITATIONS . 24LIST OF FIGURESFigure 1:Figure 2:Figure 3:Figure 4:Site Vicinity MapApproximate Boring Location PlanLateral Earth Pressure Diagram for Design of Below-Grade WallsSubdrainage DetailsLIST OF TABLESTable 4.1:Table 5.1:Table 5.2:Table 6.1:Summary of Pressuremeter Tests ResultsSummary of In-Situ Infiltration Test ResultsUSDA Textural Classification and Minimum Infiltration RatesEstimated Elevation of Suitable Compacted Fill SubgradesAPPENDICESAppendix A:Appendix B:Appendix C:June 24, 2019Project 18C41041Subsurface Exploration DataIn-Situ Test ResultsSoil Laboratory Test DataPage iiSchnabel Engineering DC, Inc. 2019 All Rights Reserved

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SmithGroupThe Catherine and Isiah Leggett Building1.0EXECUTIVE SUMMARYThis report presents the results of the geotechnical investigation and testing conducted by SchnabelEngineering DC, Inc. (SEDC) for the proposed Catherine and Isiah Leggett Building for SmithGroup.Based on our evaluation of the subsurface conditions revealed by our field investigation and the projectdata furnished to us, we have developed the following summary of our major conclusions andrecommendations. Detailed recommendations are presented in the body of the report. Ten soil test borings were advanced in the general area of the proposed building and five soilborings were advanced at proposed stormwater management locations (one of the test buildingborings also served as a stormwater boring, SB-05/SWM-4) in 2018. Two additional soil testborings were advanced in May 2019. The subsurface investigations revealed that the site isunderlain by terrace deposits (Strata B1 and B2) overlaying residual soils (Strata C1, C2, and D).Existing fill was also encountered and extended between 1.2 ft to 6 ft below surface grades in themajority of the borings, except at borings SB-08 and SB-10. At these locations, deeper fill waspresent and extended 13.5 ft to 23.5 ft below surface grades, respectively. The subject site is currently occupied by Falcon Hall with the lowest level at predominately EL 307 (ft) and some spaces with a lowest level at EL 302 (ft), and the Science South Buildingwith a lowest level at EL 326 (ft). Both buildings will be demolished in their entirety and thebuildings’ foundation systems will be completely removed. Cuts of up to about 15 ft are expected,and the majority of the fill that was encountered in the borings will be removed as part of thedemolition. At boring SB-10, where fill extended to EL 302.9 (ft), the fill material is believed tobe backfill of the present-day building. Boring SB-10 currently lies outside of the proposedbuilding footprint and our recommendations have been tailored with this consideration. To reach the proposed lowest level of the new Catherine and Isiah Leggett Building at EL 320(ft), up to about 15 ft to 18 ft of new compacted structural fill will need to be placed. Due to thelarge thickness of new fill being placed, settlement plates will need to be installed and the fillmonitored to ensure that settlement has dissipated before the building can be constructed.Additional details are included herein. Considering a maximum column load of about 200 kips to 300 kips, we recommend the newbuilding be supported on spread footings founded on firm natural soils of Strata B1, B2, C1, or C2or on compacted structural fill. In areas where existing natural soil is loose/soft or existing fillmaterial is present, these materials should be removed and replaced with compacted structural fillor lean concrete. Spread footings can be designed for an allowable soil bearing pressure of3,000 psf as discussed in detail in the report. The proposed floor slabs should be supported on suitable natural soils of Strata B1, B2, C1, andC2 or compacted structural fill. A modulus of subgrade reaction, k, of 100 kcf (kips per cubic foot)should be used in the design of floor slabs.June 24, 2019Project 18C41041Page 1Schnabel Engineering DC, Inc. 2019 All Rights Reserved

SmithGroupThe Catherine and Isiah Leggett Building We evaluated the Seismic Site Class for this project according to the International Building Code(IBC) Section 1613 2015. Our analysis indicates Site Class D for this location. This Site Classwas evaluated based on the Standard Penetration Test (SPT) values. Building walls that extend below-grade need to be designed to withstand lateral earth pressures.Additional details are provided herein. Subdrainage below the floor slab and behind below-grade walls will be required. Dewateringduring construction will also be required. Additional details are provided herein.We are providing this executive summary solely for purposes of overview. Any party that relies on thisreport must read the full report. This executive summary omits several details, any one of which could bevery important to the proper application of the report.June 24, 2019Project 18C41041Page 2Schnabel Engineering DC, Inc. 2019 All Rights Reserved

SmithGroupThe Catherine and Isiah Leggett Building2.0SCOPE OF SERVICESOur proposal dated January 18, 2018, and Revision No. 1 proposal dated May 2, 2019, defines the scopeof services for this project. The scope of services includes the following: Advancing twelve (12) soil test borings to depths between 40 ft and 55 ft each, five soil testborings to depths between 15 ft and 16 ft each, and conducting pressuremeter testing at two (2)of the building borings.Conducting falling head infiltration testing at six locations.Preparation of a report consisting of:o Project and site description, including relevant information relating to nearby foundationsand structures, etc.o A boring location plan, indicating boring locations referenced to actual physical featuresand proposed locations of structures.o Boring logs with soil/rock description, classification, and depth of fill, groundwaterobservations, and any other observations made during the exploration, including theground surface elevations at boring locations.o An estimate of subsurface conditions and groundwater levels within the area explored.o Foundation requirements including a net allowable soil bearing pressure, bearing gradesand estimated settlements for spread footings.o Recommendations for floor slab support, including a recommended modulus of subgradereaction for use in slab design.o Earthwork recommendations for the construction of load-bearing fill including anassessment of site soils for use as fill, subgrade preparation, and compaction criteria.o Recommended Seismic Site Class in accordance with IBC 2015 for use in foundationdesign based on an extrapolation of data collected in the subsurface exploration.o Recommended static earth pressures, subdrainage and backfill requirements forbasement walls, loading dock walls or retaining walls, if necessary.o Recommendations regarding permanent subdrainage design and installation, ifnecessary.o Recommendations regarding building area surcharging requirements due to theplacement of new compacted structural fill.o Construction considerations related to the implementation of our recommendations.June 24, 2019Project 18C41041Page 3Schnabel Engineering DC, Inc. 2019 All Rights Reserved

SmithGroupThe Catherine and Isiah Leggett Building3.0DESCRIPTION OF SITE AND PROPOSED CONSTRUCTION3.1Site DescriptionWe understand that the project will consist of constructing The Catherine and Isiah Leggett Building at theMontgomery College Takoma Park/Silver Spring Campus in Takoma Park, Maryland. The project site isbounded by Fenton Street to the south and west, Takoma Avenue to the east, and New York Avenue tothe north. A Site Vicinity Map is included as Figure 1.Areas to be improved are currently asphalt lots, the Falcon Hall and Science South academic buildings,tennis courts, and landscaped grass areas between academic buildings. We understand that the lowestlevel elevation for the Science South building is at elevation EL 326 (ft), and the lowest level elevationfor Falcon Hall is at approximate elevation EL 307 (ft). Both of these buildings are believed to besupported on spread footings. Existing grades in the area of the proposed building footprint range fromabout EL 315 (ft) to about EL 334 (ft).We obtained the site information from our site visits and from the information provided by your office. Thetopographic information was supplied by A. Morton Thomas and Associates.3.2Proposed ConstructionThe proposed building will be located along the east portion of the Takoma Park/Silver Spring Campus inthe area where present-day Falcon Hall, the Science South Building, Staff Parking Lot E1, and the tenniscourts are situated. We understand that existing Falcon Hall and the Science South Building

BMC to coordinate with college on who will handle 3rd party inpections. MONTGOMERY COLLEGE PROJECT #FP16-077 MONTGOMERY COLLEGE BUILDING #319 . SECTION 115313 - LABORATORY FUME HOODS SECTION 115500 - PLANETARIUM EQUIPMENT . Cannot find locations and sizes of display cabinets on documents.