PUBLIC NOTICE - Montgomery County

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PUBLIC NOTICE - Montgomery County
PUBLIC NOTICE
                     Request for Noise Suppression Plan Approval

The Department of Environmental Protection is currently reviewing a request for approval of a
Noise Suppression Plan (NSP) permitting noise levels from construction activities up to 85 dBA
(A-Weighted Decibels) as allowed under the Montgomery County Noise Control Ordinance,
Chapter 31B, Section 31B-6. The Department will receive comments on the NSP for a
minimum of ten (10) days after distribution of this notice.

The NSP approval is being requested by Barton Mallow Builders, 300 W. Pratt St., Suite 310,
Baltimore, Maryland, to accommodate anticipated construction noise levels that sometimes
may exceed the designated daytime construction noise standard as defined in the
Montgomery County Noise Control Ordinance, Chapter 31B, Section 31B-6. The work will
occur at the Montgomery College, Takoma Park Campus, 7600 Takoma Ave., Takoma Park, and
involves demolition and construction noise related to building the new Catherine and Isiah
Leggett Math and Science Building.

If approved the 85 dBA noise level will be applicable weekdays from 7:00 a.m. to 5:00 p.m. and
Phase 1 of the project that includes demolition, site utilities and excavation work is scheduled
to begin in September 2020 and run through March 2021

The application and related documents are available for public inspection and may be viewed
on the Department’s website by visiting the Noise Waivers & Suppression Plans page at:
https://www.montgomerycountymd.gov/DEP/contact/noise-documents.html#waivers.

Comments, questions, or requests to examine documents related to the NSP application may
be directed to depnoisewaiver@montgomerycountymd.gov.
PUBLIC NOTICE - Montgomery County
Barton Malow Noise Suppression Plan

Project: Montgomery College – Catherine and Isiah Leggett
Math and Science Building
Address: 7600 Takoma Ave, Takoma Park, MD 20912
PUBLIC NOTICE - Montgomery County
Satellite View of
Project Radius

                          ft
                    500
Project Radius with Property Addresses

                                                                             Pavilion 3

                                              MP

                                                                                                           7704
                                                    Resource
                                                    Center

                                                                                                    7700
                                   Science
                                   North
                                   Building

                                                                                                                            7701
                                         Science                                 C.F. Scott
                                         South                                   Commons
                                         Building

                                                                                                                   7617

                                                                                                                7613
                                                                                                                          516
                                                               Falcon Hall

                                                                                                                  7611          512
                                                                                                         7611

                                  500 ft
                                                                                                  7607

                                                                                      531

                                                                                            527
                                                                                              525

                                                                                                     521
Construction Activities and Associated Equipment

Phase 1: Demolition, Site Utilities, and Excavation (planned September 2020 - March 2020)

   -   Demolition activities will include jackhammers, debris being loaded into vehicles, and debris
       falling against the existing building.
   -   Shoring (i.e. support of excavation during earthwork/demolition) installation will involve drill
       rigs drilling and setting steel piles to support shoring.
   -   Excavator(s), loader(s) and other heavy truck(s) will be utilized to raze, dig, and haul building
       materials.

Phase 2: Foundation and Structure (planned March 2021 - November 2021)

   -   Foundational concrete will be delivered and placed via a concrete mixing truck and concrete
       pump truck.
   -   Concrete trowel machine(s) and/or other gas powered equipment will be used to finish concrete
       slab on grade.
   -   A tower crane will be utilized for erecting structural steel. Impact drivers will be used for various
       fastening applications.

Phase 3: Building Envelope (planned November 2021 - July 2022)

   -   Masonry, curtain wall, window installation will require hammer drills, impact guns, and lifts.

Phase 4: Interior Fit Out (planned December 2021 - December 2022)

   -   Lift(s) and other equipment, such as hammer drills and pneumatic equipment, will be utilized to
       install various building materials.

Phase 5: Hardscape and Landscape (planned July 2022 - October 2022)

   -   Concrete work will utilize trucks, tools, and compacting equipment.
   -   Grading and landscaping will utilize trucks, tools, and earthmoving equipment.

*Please note that construction design and schedule are still in development, and the above dates are
subject to change.
Noise Mitigation Plan

Implementation of the strategies below will help mitigate noise generated by the construction for the
duration of the project, thus reducing the overall impact to neighboring residents.
-   Noise levels will be monitored on a regular basis by Barton Malow. Decibel level readings and
    locations of the monitoring sites will be kept in a log onsite, which shall be available for inspection
    and review upon request. Decibel readings will be taken utilizing a Tacklife Decibel Meter Model
    MLM02.

-   In an effort to reduce the frequency of construction vehicle back up alarms, site logistics have been
    configured to maximize forward movement and decrease preventable reverse driving.

-   The slamming of vehicle tailgates is prohibited. This will be expressed to all contractor truck drivers
    prior to the commencement of work, and it will be strictly enforced by Barton Malow’s onsite
    Foremen and/or Superintendent.

-   All contractors will be notified that unnecessary idling of construction vehicles and/or equipment is
    prohibited. On-site foreman and superintendents will ensure that operators are only running
    machines when they are in use or for proper startup procedures.

-   Contractors will seek to maximize the use of utility electrical connections, as opposed to temporary
    generators, which typically generate more noise.

-   Contractors will utilize saw cutting as much as possible to minimize jack hammering.

-   Contractors will perform maintenance checks daily, as required by our safety plan, on all vehicles to
    make sure all parts are in good condition and properly lubricated, to reduce noise associated with
    improper equipment condition.

-   Montgomery College hotline number (1-800-879-9879) is being utilized as a medium of
    communication with the community regarding any issues, comments, or questions regarding the
    project.
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