A2_Plans_and_Specs.pdf

US Army Corps of Engineers Baltimore District

SPECIFICATIONS

PAVEMENT REPAIRS AND

IMPROVEMENTS

JAMES J. ROWLEY TRAINING CENTER,

LAUREL, MD

CONTRACT NO.

DATE: AUG 2016

JJ ROWLEY TRAINING CENTER JJRTCPAVING

PROJECT TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

01 01 00 GENERAL REQUIREMENTS

01 10 00 SUMMARY OF WORK

01 32 01.00 10 PROJECT SCHEDULE

01 33 00 SUBMITTAL PROCEDURES

01 35 26 GOVERNMENTAL SAFETY REQUIREMENTS

01 45 00.00 10 QUALITY CONTROL

01 45 00.10 10 QUALITY CONTROL SYSTEM (QCS)

DIVISION 31 - EARTHWORK

31 00 00 EARTHWORK

DIVISION 32 - EXTERIOR IMPROVEMENTS

32 01 16.17 COLD MILLING OF BITUMINOUS PAVEMENTS

32 11 23 DENSE GRADED AGGREGATE (DGA) BASE COURSE

32 12 17 BITUMINOUS PAVING - MARYLAND (SUPERPAVE)

32 13 13.06 PORTLAND CEMENT CONCRETE PAVEMENT FOR ROADS AND SITE

FACILITIES

32 16 13 CONCRETE SIDEWALKS AND CURBS AND GUTTERS

32 17 24.00 10 PAVEMENT MARKINGS

DRAWING

PHOTOS - EXISTING CONDITIONS

CORE LOGS - EXISTING CONDITIONS

-- End of Project Table of Contents --

PROJECT TABLE OF CONTENTS Page 1

SECTION 01 01 00

GENERAL REQUIREMENTS

PART 1 GENERAL

1.1 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Progress and completion pictures; G

1.1.1 PRE-WORK SUBMITTALS

Two paper copies or digital copies of the following shall be submitted within 20 days of award to the COR.

1. Accident Prevention Plan (APP)

2. Maintenance of Traffic Plan

3. Superintendent Certification

4. Materials Data (per attached Specifications)

1.1.2 POST-WORK SUBMITTALSe

Two paper copies or digital copies of the following shall be submitted within 7 days to the COR.

1. Daily quality control reports (per attached Specifications)

2. Test Data; density testing, concrete strength testing, etc.

(per attached Specifications)

3. As-Built Drawings

1.2 PERIOD OF PERFORMANCE

Work shall not commence until after the issuance of a notice to proceed issued by the Contracting Officer. The contractor shall complete pre work submittals within 45 days of receiving notice of contract award. The contractor shall complete all work within 300 days of receiving notice to proceed from the Contracting Officer. Additionally, all roadways and parking areas shall be open to through traffic no later than October 1, 2017. The start date shall be coordinated with the Contracting Officer's Representative (COR) and the Facilities Manager. The Facilities Manager shall also be provided with the construction schedule / task durations.

1.3 PERFORMANCE OF WORK

The contractor shall perform work only during normal Corps of Engineers duty hours (7:00 AM to 3:30 PM, Monday through Friday, excluding federal holidays). Exceptions to this condition shall be coordinated with and approved in advance by the COR and the Facilities Manager.

SECTION 01 01 00 Page 1

1.3.1 MEASUREMENT AND PAYMENT

Measurement and Payment shall be in accordance with the Project Specifications and the attached Price Schedule.

1.4 SUPERVISION

Have at least one qualified supervisor capable of reading, writing, and conversing fluently in the English language on the job site during working hours. In addition, if a Quality Control (QC) representative is required on the contract, then that individual shall also have fluent English communication skills.

1.5 PRECONSTRUCTION CONFERENCE

After award of the contract but prior to commencement of any work at the site, meet with the Contracting Officer to discuss and develop a mutual understanding relative to the administration of the value engineering and safety program, preparation of the schedule prices, shop drawings, and other submittals, scheduling programming, prosecution of the work, and clear expectations of the "Interim DD Form 1354" Submittal. Major subcontractors who will engage in the work shall also attend.

1.6 PERMITS AND LICENSES

The contractor shall, at their own expense, obtain any licenses or permits required to perform the contract, and is responsible for applicable fees.

The contractor shall comply with all federal, state, and local laws and regulations as well as any subsequent changes. The contractor shall also clear the work site for all utilities and obtain excavation permit before performing the work discussed herein.

1.7 [Enter Appropriate Subpart Title Here]1.7.1 Site Access

Access to the site is available via Powder Mill Road, which can be readily accessed by way of U.S. Route 295, "Baltimore-Washington Parkway". (See Site Location Map). Access on site will have to be coordinated with the Security Office and the Facilities Manager. Refer to paragraph SECURITY herein.

1.7.2 Safety

The contractor shall comply with all current federal, state, and local safety regulations. The contractor shall also comply with the Corps of Engineers Safety and Health Requirement Manual EM 385-1-1, 2014 Edition.

Information regarding acquiring the Corps of Engineers Safety and Health Requirement Manual EM 385-1-1 found on the USACE Headquarters website at http://www.usace.army.mil/SafetyandOccupationalHealth/EM38511,2008BeingRevised.aspx.

Prior to commencement of work under this contract, the contractor shall furnish to the government an Accident Prevention Plan in accordance with Section I, Article 01.A.12 of the EM 385-1-1, dated 30 November 2014. The contractor shall clearly mark the area where work is to be performed so that pedestrians and vehicles approaching the site are aware of the safety hazard associated with the work being performed. Excavations that are left open overnight, or for an extended period of time, shall be clearly marked and blocked off from pedestrian and vehicle access.

SECTION 01 01 00 Page 2

1.7.3 Accident Reporting

In the event of an accident or injury involving contractor personnel or equipment in performance of work, the contractor shall immediately notify the government representative by the most expedient means feasible. The contractor shall complete forms furnished and/or provide a written description of the incident within 24 hours of notification to do so.

1.8 Environmental Protection

The contractor shall comply with all federal, state, and local environmental regulations. The Contractor is responsible for creating an Erosion and Settlement Control (E+S) Plan and submitting it to the Government for approval. The approved E+S Plan shall be kept on site by the Contractor for the duration of the work.

1.9 SECURITY

All contractor and sub-contractor employees shall comply with applicable installation, facility and area commander installation/facility access and local security policies and procedures (provided by government representative).

1.9.1 Pre-Screen Candidates Using E-Verify Program

The contractor shall pre-screen candidates using the E-Verify program (http://www.uscis.gov/e-verify) website to meet the established employment eligibility requirements. The contractor shall ensure that the candidate has two valid forms of government issued identification prior to enrollment to ensure the correct information is entered into the E-Verify program.

1.10 RECORD AND REPORTS

In addition to the administrative requirements dictated elsewhere in this contract, the contractor shall complete a Daily Construction Quality Control Report form to maintain record of contract performance, accident / injury incidence, and observance of project deficiencies. Forms will be distributed at a pre-work conference.

1.10.1 Superintendent

The contractor shall act as or provide a Superintendent whenever the work specified herein is being performed. The Superintendent shall conduct overall management and coordination of the work being performed. The Superintendent will also be the primary point of contact with the government for the work being performed. The Superintendent and any individual designated to act for him/her shall have full authority to contractually commit the Contractor for prompt action on matters pertaining to the work performed under this contract. Such authorization shall be submitted in writing to the Government representative. The Superintendent shall deal directly with the Government representative for normal day-to-day administration of the contract provisions. The Superintendent shall attend pre-work conference(s) prior to commencing work under this contract. The contractor shall submit a Certification with the Name, Contact Info, and brief resume to the Government, before mobilizing on site.

1.11 OPERATIONS, STORAGE AREAS & HOUSEKEEPING

The contractor shall confine all operations (including storage of

SECTION 01 01 00 Page 3 materials) to areas authorized or approved by the COR and Facilities Manager. The contractor shall hold and save the government, its officers, and agents free and harmless from liability of any nature incurred by the contractor's performance. The contractor shall keep the work area, including storage areas, free from accumulation of waste materials. Before completing the work, the contractor shall remove from the work site and premises, any rubbish, tools, equipment, and materials that are not property of the government. Upon completing the work the contractor shall restore the work area to the original condition, to be approved by the COR.

Points of Contact

Facilities Manager - Miguel Lopez

(203) 624-3023 miquel.a.lopez@usss.dhs.gov

Project Manager - Elihu Hirsch

(410) 320-9407 Elihu.P.Hirsch@usace.army.mil

Geotechnical Engineer - Peter Wilson, P.E.

(410) 962-6820 peter.h.wilson@usace.army.mil

Civil / Site Engineer - Cliff Weedman

(410) 962-6696 clifford.M.weedman@usace.army.mil

1.12 INVOICES

The Contractor shall submit itemized invoices no sooner than 5 days from the completion of the contract activity and no later than 15 days from the completion of the total contract activity. The invoice shall accurately reflect work completed. Each invoice at a minimum shall contain the following information:

1. Contractor name and address, exactly as it appears on the contract.

2. Contract number.

3. Date of invoice submission.

4. Invoice or call order number.

5. Invoice total.

1.13 REMITTANCE

Invoices shall be submitted via post-mail and/or electronic mail to the following addresses for payment. In the event that changes occur to the mailing addresses, the contractor shall be notified of the correct recipient.

a. Via Post Mail: U.S. Army Corps of Engineers Susquehanna River Project ATTN: Robert Jackson 10 South Howard Street Baltimore, MD 21201

b. Via Electronic Mail: robert.n.jackson@usace.army.mil

PART 2 PRODUCTS

Not Used

SECTION 01 01 00 Page 4

PART 3 EXECUTION

Not Used

-- End of Section --

SECTION 01 01 00 Page 5

SECTION 01 10 00

SUMMARY OF WORK

PART 1 GENERAL

1.1 WORK COVERED BY CONTRACT DOCUMENTS

1.1.1 Project Description

Pavement failures throughout the RTC Training Center have developed over the lifetime of the facility, which require repair. Depending on the location and severity of failures, required repairs will consist of either resealing, mill and overlay, or full depth pavement reconstruction. Some areas will also receive new pavements, to increase the available parking spaces for the facility. This scope of work describes the procedures and requirements for completing the pavement repairs and improvement.

Contractor requirements shall include performance of all work shown on the attached plans, specifications, and as defined in the written scope herein. Photos of the existing conditions will be attached

1.1.2 Location

The JJRTC is located in Central Maryland, approximately 23 miles southwest of Baltimore City, and approximately 16 miles northeast of Washington D.C.

The campus is bound to the west by U.S. Route 295 and bound to the South and East by Powder Mill Road. Access to the site is available via Powder Mill Road, which can be readily accessed by way of U.S. Route 295, Baltimore-Washington Parkway. The James J. Rowley Training Center (RTC) provides training to the agents and officers of the United States Secret Service (USSS). RTC must continue to maintain the facilities to provide an optimal training environment.

1.2 Security Requirements

The contractor and his/her employees and sub-contractors shall be citizens of the United States.

Contract employees shall undergo a favorable Suitability Assessment as determined by the US Secret Service's Security Clearance Division's, Clearance and Access Branch (SCD-CAB) prior to performing any work within US Secret Services controlled access facilities, or on US Secret Service's information technology systems. Additional Suitability Assessments will be required for continued work requirements as determined by SCD-CAB, but no less than once every two years.

1.3 OCCUPANCY OF PREMISES

Building(s) will be occupied during performance of work under this Contract. Occupancy notifications will be posted in a prominent location in the work area.

Before work is started, the Contractor shall arrange with the Contracting

SECTION 01 10 00 Page 1

Officer a sequence of procedure, means of access, space for storage of materials and equipment.

1.4 LOCATION OF UNDERGROUND UTILITIES

Obtain digging permits prior to start of excavation. Scan the construction site with electromagnetic or sonic equipment, and mark the surface of the ground or paved surface where existing underground utilities are discovered. The Contractor shall carefully note the location of all existing utility lines and features (such as water valve and manhole access points) and take precautions to prevent damage during construction activity. Repair or replacement of utilities and associated features damaged by the contractor shall be at no cost to the Government. The contractor is responsible for obtaining all utility clearances, before beginning work. Inform the Government immediately upon encountering any unexpected utilities.

1.5 MILL AND OVERLAY REPLACEMENT

(Item #1, #7 and #10 on the Price Schedule)

There are several areas to receive mill and overlay, as shown on drawings.

Some of these areas are included as options to the contract. The Merletti Building parking will be completed as part of the base bid. Other roadway areas to receive mill and overlay will be completed as options and are designated as either high or low priority on the drawings. Actual limits of work and associated payment will be determined in the field, by the Contracting Officer.

The contractor shall assume the thicknesses shown on the attached Coring Logs to be representative of the depth of existing asphalt. NOTE: asphalt thicknesses are variable across the facility, due to differing construction methods and ongoing paving maintenance over the lifetime of the roads.

Photos of the existing conditions are attached.

1.5.1 Bituminous Pavement (Milling)

Milling shall be performed in accordance with Specification Section 32 01

16.17 COLD MILLING OF BITUMINOUS PAVEMENTS to sufficient depth to remove all observed surface pavement failures. After milling, exposed asphalt surfaces shall be inspected by the Contracting Officer to ensure that no evidence of failed pavement remains. Observed conditions which will dictate a full depth bituminous replacement include, but are not limited to; alligator cracking, potholes, severe depressions, loose material, and deep raveling. Approved milled surfaces shall be swept clean, and prepared for surface course in accordance with project specifications.

1.5.2 Spoil Materials

All demolished asphalt materials shall be disposed of off site, at an approved waste facility, at the Contractor's expense and responsibility.

1.5.3 New Pavement Overlay

Construct new pavement section as shown on attached Contract Drawings, and in accordance with Specification Section 32 12 17.02 BITUMINOUS PAVING - MARYLAND (SUPERPAVE). Final surfaces shall be nearly level in cross section (i.e. without depression) yet graded as necessary to ensure

SECTION 01 10 00 Page 2 positive drainage and to prevent ponding of water on final pavement surface. Final pavement surfaces shall match the existing grades at all locations, while maintaining positive drainage. The bituminous asphalt shall be a Maryland State Highway Association (MD SHA) approved SUPERPAVE mix, utilizing a PG 64-22 binder and a Design ESAL frequency of 0.3 million to 3 million. At the limits of new work, where overlay meets existing bituminous surface, and where overlay meets new full depth bituminous replacement, refer to attached Contract Drawings.

1.5.4 Existing Utilities

The Contractor shall carefully note the location of all existing utility lines and features (such as water valve and manhole access points) and take precautions to prevent damage during construction activity. Repair or replacement of utilities and associated features damaged by the contractor shall be at no cost to the Government. The contractor is responsible for obtaining all utility clearances, before beginning work. Inform the Government immediately upon encountering any unexpected utilities.

1.6 FULL DEPTH BITUMINOUS REPLACEMENT

Item #2 and #8 on Price Schedule

1.6.1 Location of Work

There are several areas to full depth bituminous pavement replacement, as shown on drawings. Some of these areas are included as options to the contract. The Merletti Building parking will be completed as part of the base bid. Other roadway areas to receive full depth bituminous pavement replacement will be completed as options, as shown on the drawings. All of these areas will be proofrolled after bituminous removal and subsequent subgrade stabilization will be directed where required, as described herein. Actual limits of work and associated payment will be determined in the field, by the Contracting Officer.

1.6.2 Existing Conditions

The contractor shall assume the thicknesses shown on the attached Coring Logs to be representative of the depth of asphalt to be demolished. NOTE:

asphalt thicknesses are variable across the facility, due to differing construction methods and ongoing paving maintenance over the lifetime of the roads. The exposed aggregate base in many areas will be wet and unstable, therefore the exposed base in all locations shall be proofrolled, and stabilized where necessary, as described herein. The Contractor shall assume that extensive dewatering of excavations will not be required. The Contractor is responsible for keeping open excavations free of surface runoff, as described in the attached EARTHWORK Specification. Photos of the existing conditions are attached.

1.6.3 Remove Existing Bituminous Pavement

Demolish the existing pavement by sawcutting limits of removal and milling off the full depth of bituminous pavement layers. Exact limits of pavement replacement will be determined in field, as directed by the Contracting Officer. The depth of existing asphalt varies along the length of the road. Refer to the attached coring logs, which provide asphalt depths at various locations. Coring Logs and Plans are included in the attached Appendix.

SECTION 01 10 00 Page 3

1.6.4 Spoil Materials

All demolished asphalt materials shall be disposed of off site, at an approved waste facility, at the Contractor's expense and responsibility.

Demolished aggregate base and subgrade material shall be stored at the project spoil area, to be taken off site at the Contractor's expense and responsibility.

1.6.5 Subgrade Stabilization

As stated above, exposed aggregate base will be wet and unstable at several locations. At all locations, the exposed aggregate base shall be proofrolled, and stabilized where necessary, shown on attached Contract Drawings, and described in Specification Sections 31 00 00 EARTHWORK and 32 11 23 DENSE GRADED AGGREGATE (DGA) BASE COURSE. Subgrade Stabilization shall be achieved by the "Stone and Geotextile" method, which consists of the over excavation of 16" of base course / subgrade soil, and replacement with 12" of Dense Graded Aggregate (DGA) material overtop a stabilization geotextile. DGA placed in stabilization layer shall be compacted to between 90 and 95% maximum density. A new 4" DGA base course shall then be placed atop the stabilization layer, and compacted to near 100% maximum density. Exposed stone base courses which show no signs of subgrade failures shall be scarified to an approximate depth of 4" and recompacted in accordance with project specifications. Refer to contract drawings and project specifications for more detailed requirements.

1.6.6 Construct New Pavement Section

Construct new pavement section as shown on attached Contract Drawings, and in accordance with Specification Sections 32 11 23 DENSE GRADED AGGREGATE (DGA) BASE COURSE and 32 12 17.02 BITUMINOUS PAVING - MARYLAND (SUPERPAVE). Final surfaces shall be nearly level in cross section (i.e.

without depression) yet graded as necessary to ensure positive drainage and to prevent ponding of water on final pavement surface. Final pavement surfaces shall match the existing grades at all locations, while maintaining positive drainage. The bituminous asphalt shall be a Maryland State Highway Association (MD SHA) approved SUPERPAVE mix, utilizing a PG 64-22 binder and a Design ESAL frequency of 0.3 million to 3 million. At the limits of new work, where new roadway meets existing roadway to remain, refer to attached Contract Drawings. As described in the Specifications, MD SHA CR-6 material typically meets requirements for a DGA material.

1.6.7 Existing Utilities

The Contractor shall carefully note the location of all existing utility lines and features (such as water valve and manhole access points) and take precautions to prevent damage during construction activity. Repair or replacement of utilities and associated features damaged by the contractor shall be at no cost to the Government. The contractor is responsible for obtaining all utility clearances, before beginning work. Inform the Government immediately upon encountering any unexpected utilities.

1.7 Sidewalk Reconstruction

Item #3 and #9 on the Price Schedule

1.7.1 Location of Work

There are several areas of sidewalks to be replaced. Some locations are

SECTION 01 10 00 Page 4 included as options to the contract. The sidewalks at the Merletti Building will be completed as part of the base bid. Other sidewalk locations to be replaced will be completed as options. Actual limits of work and associated payment will be determined in the field, by the Contracting Officer.

1.7.2 Existing Conditions

Sidewalk sections have settled due to poor compaction and/or subgrade materials beneath concrete. Refer to attached photos. Based on visual observations, it appears that the existing curbs are in good condition and can remain in place. If it is determined in the field that the curbs also need to be replaced, then contractor shall notify Government immediately.

1.7.3 Spoil Materials

All demolished concrete materials shall be disposed of off site, at an approved waste facility, at the Contractor's expense and responsibility.

Demolished aggregate base and subgrade material shall be stored at the project spoil area, to be taken off site at the Contractor's expense and responsibility.

1.7.4 Replace Concrete Sidewalk

Demolish existing concrete and stone base to limits determined in field by Contracting Officer. Depth of base removal shall extend minimum of 8 inches below final concrete surface elevation. Compact exposed subgrade and place new porous stone in accordance with Specification 31 00 00 EARTHWORK and as shown on drawings. New concrete sidewalk shall be constructed as shown on drawings and in accordance with Specification Section 32 16 13 CONCRETE SIDEWALKS CURBS AND GUTTERS.

1.8 PODC RESURFACING AND STRIPING

Item #4 and #5 on the Price Schedule

1.9 Existing Conditions

The performance driving pad, commonly referred to as PODC is a large existing bituminous asphalt roadway used for high speed and tactical driving. The existing asphalt surface is in good condition, with visible asphalt seams that could begin to segregate and/or degrade overtime. To maintain a high level of performance over an extended lifetime, this roadway shall be resurfaced as described herein. The PODC pad currently uses cones for delineating drive lanes and obstacles. New pavement markings should be provided to replace the use of cones for these purposes.

1.10 Resurfacing Via "Fog Seal"

To maintain the high performance over the lifetime of the PODC pad, a fog seal shall be applied, in accordance with Specification Section 32 12 17.02 BITUMINOUS PAVING - MARYLAND (SUPERPAVE). A fog seal, sometimes also referred to as a "seal coat" is a light application of diluted slow-setting emulsion, with or without a following application of sand, to an existing asphalt pavement. In this application, there will be no sand applied, therefore the term "fog seal" is used. The asphalt emulsion can be sprayed or squeegeed onto existing surface. The emulsified asphalt product shall be a type HFRS-2, SS-1, or SS-1h, per ASTM D977 / AASHTO M 140, or type CSS-1 or CSS-1h, per ASTM D2397 / AASHTO M 208. For additional information

SECTION 01 10 00 Page 5 on this process, as well as a broad description of asphalt emulsions, refer to Manual Series No. 19 "Asphalt Emulsion" produced by the Asphalt Emulsion Manufacturers Association (AEMA) and Asphalt Institute.

1.11 Pavement Restriping

PODC pad shall be restriped in accordance with contract drawings and Specification Section 32 17 24.00 10 PAVEMENT MARKINGS. Additional coordination on exact locations for pavement markings will be provided in the field by Government.

1.12 NEW CONCRETE PAVEMENT BEHIND FITNESS CENTER

Item #6 on the Price Schedule

1.12.1 Existing Conditions

There is an existing grassed area at the parking lot behind the Physical Fitness Center (Refer to attached photos). This area is to be removed and replaced with a Concrete Pavement, adjoining the existing pavements. The new concrete will abut existing concrete pavement on two sides, and abut existing asphalt pavement on the third. The fourth side will abut the existing building and/or loading dock.

1.12.2 Excavation and Demolition

Existing topsoil shall be stripped and reused as practical on project, or spoiled as described below. Area for new pavement shall be excavated to depth required to construct pavement section as shown on drawings.

Contractor shall take care not to damage or undermine the existing, surrounding pavements. Refer to contract drawings for transition details.

1.12.3 Spoils Material

All demolished concrete materials shall be disposed of off site, at an approved waste facility, at the Contractor's expense and responsibility.

Topsoil, Base course, and Subgrade material shall be stored at the project spoil area, to be taken off site at the Contractor's expense and responsibility.

1.12.4 Subgrade Stabilization

The exposed subgrade shall be proofrolled, and stabilized where necessary, shown on attached Contract Drawings, and described in Specification Sections 31 00 00 EARTHWORK and 32 11 23 DENSE GRADED AGGREGATE (DGA) BASE COURSE. Subgrade Stabilization shall be achieved by the "Stone and Geotextile" method, which consists of the over excavation of 12" of subgrade soil, and replacement with 12" of Dense Graded Aggregate (DGA) material overtop a stabilization geotextile. DGA placed in stabilization layer shall be compacted to between 90 and 95% maximum density. Refer to contract drawings and project specifications for more detailed requirements.

1.12.5 Construct New Pavement Section

Construct new pavement section as shown on attached Contract Drawings, and in accordance with Specification Sections 32 11 23 DENSE GRADED AGGREGATE (DGA) BASE COURSE and 32 13 13.03 PORTLAND CEMENT CONCRETE PAVEMENT FOR ROADS AND SITE FACILITIES. Final surfaces shall be nearly level in cross section (i.e. without depression) yet graded as necessary to ensure

SECTION 01 10 00 Page 6 positive drainage and to prevent ponding of water on final pavement surface. Final pavement surfaces shall match the existing grades at all locations, while maintaining positive drainage. At the limits of new work, where new pavement meets existing pavement to remain, refer to attached Contract Drawings. Joint and reinforcement details are also provided on the drawings. As described in the Specifications, MD SHA CR-6 material typically meets requirements for a DGA material.

1.12.6 Existing Utilities

The Contractor shall carefully note the location of all existing utility lines and features (such as water valve and manhole access points) and take precautions to prevent damage during construction activity. Repair or replacement of utilities and associated features damaged by the contractor shall be at no cost to the Government. The contractor is responsible for obtaining all utility clearances, before beginning work. Inform the Government immediately upon encountering any unexpected utilities.

1.13 NEW BITUMINOUS PAVEMENT BEHIND HAZEN BUILDING

Optional Item #11 on the Price Schedule

1.13.1 General

The proposed parking lot addition the Hazen Building will be a contract option. Actual limits of work and associated payment will be determined in the field, by the Contracting Officer.

1.13.2 Existing Conditions

There is an existing grassed area to the Northeast of (behind) the Hazen Building that is proposed to be utilized for a new bituminous parking lot.

The new lot would also require an access lane to the existing parking lot behind the building. Minor clearing and grubbing operations to remove small bushes and trees, and trim overhanging branches would be required before beginning site work.

1.13.3 Excavation

Existing topsoil shall be stripped and reused as practical on project, or spoiled as described below. Area for new pavement shall be excavated to depth required to construct pavement section as shown on drawings. Refer to contract drawings for transition details.

1.13.4 Spoils Material

All cleared vegetation and organic material shall be disposed of off site, at an approved waste facility, at the Contractor's expense and responsibility. Topsoil and Subgrade material shall be stored at the project spoil area, to be taken off site at the Contractor's expense and responsibility.

1.13.5 Subgrade Stabilizatione

The exposed subgrade shall be proofrolled, and stabilized where necessary, shown on attached Contract Drawings, and described in Specification Sections 31 00 00 EARTHWORK and 32 11 23 DENSE GRADED AGGREGATE (DGA) BASE COURSE. Subgrade Stabilization shall be achieved by the "Stone and Geotextile" method, which consists of the over excavation of 12" of

SECTION 01 10 00 Page 7 subgrade soil, and replacement with 12" of Dense Graded Aggregate (DGA) material overtop a stabilization geotextile. DGA placed in stabilization layer shall be compacted to between 90 and 95% maximum density. Refer to contract drawings and project specifications for more detailed requirements.

1.13.6 Construct New Pavement Section

Construct new pavement section as shown on attached Contract Drawings, and in accordance with Specification Sections 32 11 23 DENSE GRADED AGGREGATE

(DGA) BASE COURSE 32 12 17.02 BITUMINOUS PAVING - MARYLAND (SUPERPAVE).

Final surfaces shall be nearly level in cross section (i.e. without depression) yet graded as necessary to ensure positive drainage and to prevent ponding of water on final pavement surface. Final pavement surfaces shall match the existing grades at all locations, while maintaining positive drainage. The bituminous asphalt shall be a Maryland State Highway Association (MD SHA) approved SUPERPAVE mix, utilizing a PG 64-22 binder and a Design ESAL frequency of 0.3 million to 3 million. At the limits of new work, where new roadway meets existing roadway to remain, refer to attached Contract Drawings. As described in the Specifications, MD SHA CR-6 material typically meets requirements for a DGA material.

1.13.7 Existing Utilities

The Contractor shall carefully note the location of all existing utility lines and features (such as water valve and manhole access points) and take precautions to prevent damage during construction activity. Repair or replacement of utilities and associated features damaged by the contractor shall be at no cost to the Government. The contractor is responsible for obtaining all utility clearances, before beginning work. Inform the Government immediately upon encountering any unexpected utilities.

1.14 LANDSCAPE REPAIR

1. All costs associated with landscape repair shall be covered under unit prices listed on the price schedule. These costs are considered incidental, and no separate payments will be made for landscape repair.

2. The contractor shall restore any damaged turf or vegetated areas to the original condition before construction. This includes shoulder and/or island areas adjacent to pavement repairs, as well as areas adjacent to new construction. Grassed areas shall be regraded, if necessary to restore to original condition, or to provide positive drainage, and shall be reseeded or re-sodded.

3. Landscape repair shall be in accordance with EARTHWORK Specification.

1.15 MAINTENANCE OF TRAFFIC

1. All costs associated with maintenance of traffic are considered incidental to the work described above and shall be covered under unit prices for pavement replacement items.

2. A written plan for maintenance of traffic shall be submitted for Government approval prior to site mobilization and shall be discussed between the Contractor, COR, and Facilities Manager.

SECTION 01 10 00 Page 8

3. The contractor is responsible for providing all traffic control devices and providing detour route and signage as required by Government and/or Facilities Manager).

4. Vehicular passage by Government personnel must be maintained throughout the duration of the project from at least one end of the road.

PART 2 PRODUCTS

Not used.

PART 3 EXECUTION

Not used.

SECTION 01 10 00 Page 9

SECTION 01 32 01.00 10

PROJECT SCHEDULE

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

U.S. ARMY CORPS OF ENGINEERS (USACE)

ER 1-1-11 (1995) Administration -- Progress, Schedules, and Network Analysis Systems

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Project Schedule; G

1.3 QUALITY ASSURANCE

Designate an authorized representative to be responsible for the preparation of the schedule and all required updating (activity status) and preparation of reports. The authorized representative shall have previously developed, created, and maintained at least 2 electronic schedules for projects similar in nature and complexity to this project and shall be experienced in the use of the scheduling software that meets the requirements of this specification.

PART 2 PRODUCTS

Not Used

PART 3 EXECUTION

3.1 GENERAL REQUIREMENTS

Prepare for approval a Project Schedule, as specified herein, pursuant to the Contract Clause, SCHEDULE FOR CONSTRUCTION CONTRACTS. Show in the schedule the sequence in which the Contractor proposes to perform the work and dates on which the Contractor contemplates starting and completing all schedule activities. The scheduling of the entire project, including the design and construction sequences, is required. The scheduling of is the responsibility of the Contractor. Contractor management personnel shall actively participate in its development. working on the project shall also contribute in developing and maintaining an accurate Project

SECTION 01 32 01.00 10 Page 1

Schedule. Provide a schedule that is a forward planning as well as a project monitoring tool.

3.1.1 Approved Project Schedule

Use the approved Project Schedule to measure the progress of the work and to aid in evaluating time extensions. Make the schedule cost loaded and activity coded. The schedule will provide the basis for all progress payments. If the Contractor fails to submit any schedule within the time prescribed, the Contracting Officer may withhold approval of progress payments until the Contractor submits the required schedule.

3.1.2 Schedule Status Reports

Provide a Schedule Status Report on at least a monthly basis. If, in the opinion of the Contracting Officer, the Contractor falls behind the approved schedule, take steps necessary to improve its progress including those that may be required by the Contracting Officer, without additional cost to the Government. In this circumstance, the Contracting Officer may require the Contractor to increase the number of shifts, overtime operations, days of work, and/or the amount of construction plant, and to submit for approval any supplementary schedule or schedules as the Contracting Officer deems necessary to demonstrate how the approved rate of progress will be regained.

3.1.3 Default Terms

Failure of the Contractor to comply with the requirements of the Contracting Officer shall be grounds for a determination, by the Contracting Officer, that the Contractor is not prosecuting the work with sufficient diligence to ensure completion within the time specified in the contract. Upon making this determination, the Contracting Officer may terminate the Contractor's right to proceed with the work, or any separable part of it, in accordance with the default terms of the contract.

3.2 BASIS FOR PAYMENT AND COST LOADING

Use the schedule as the basis for determining contract earnings during each update period and therefore the amount of each progress payment. Lack of an approved schedule update, or qualified scheduling personnel, will result in the inability of the Contracting Officer to evaluate contract earned value for the purposes of payment. Failure of the Contractor to provide all required information will result in the disapproval of the preliminary, initial and subsequent schedule updates. In the event schedule revisions are directed by the Contracting Officer and those revisions have not been included in subsequent revisions or updates, the Contracting Officer may hold retainage up to the maximum allowed by contract, each payment period, until such revisions to the Project Schedule have been made. Activity cost loading shall be reasonable, as determined by the Contracting Officer. The aggregate value of all activities coded to a contract CLIN shall equal the value of the CLIN on the Schedule.

3.3 PROJECT SCHEDULE DETAILED REQUIREMENTS

The computer software system utilized to produce and update the Project Schedule shall be capable of meeting all requirements of this specification. Failure of the Contractor to meet the requirements of this specification will result in the disapproval of the schedule.

SECTION 01 32 01.00 10 Page 2

3.3.1 Critical Path Method

Use the Critical Path Method (CPM) of network calculation to generate the Project Schedule. Prepare the Project Schedule using the Precedence Diagram Method (PDM).

3.3.2 Level of Detail Required

Develop the Project Schedule to an appropriate level of detail. Failure to develop the Project Schedule to an appropriate level of detail, as determined by the Contracting Officer, will result in its disapproval. The Contracting Officer will consider, but is not limited to, the following characteristics and requirements to determine appropriate level of detail:

3.3.2.1 Activity Durations

Reasonable activity durations are those that allow the progress of ongoing activities to be accurately determined between update periods. Less than 2 percent of all non-procurement activities shall have Original Durations (OD) greater than 20 work days or 30 calendar days. Procurement activities are defined herein.

3.3.2.2 Procurement Activities

The schedule must include activities associated with the submittal, approval, procurement, fabrication and delivery of long lead materials, equipment, fabricated assemblies and supplies. Long lead procurement activities are those with an anticipated procurement sequence of over 90 calendar days. A typical procurement sequence includes the string of activities: submit, approve, procure, fabricate, and deliver.

3.3.2.3 Mandatory Tasks

The following tasks must be included and properly scheduled:

a. Submission, review and acceptance of design packages.

b. Submission and approval of O & M manuals.

c. Submission and approval of as-built drawings.

d. Contractor's pre-final inspection.

e. Correction of punchlist from Contractor's pre-final inspection.

f. Government's pre-final inspection.

g. Correction of punch list from Government's pre-final inspection.

h. Final inspection.

3.3.2.4 Government Activities

Show Government and other agency activities that could impact progress.

These activities include, but are not limited to: inspections, utility tie-in, Government Furnished Equipment (GFE) and Notice to Proceed (NTP) for phasing requirements.

SECTION 01 32 01.00 10 Page 3

3.3.2.5 Activity Responsibility Coding (RESP)

Assign responsibility Code for all activities to the Prime Contractor, Subcontractor or Government agency responsible for performing the activity. Activities coded with a Government Responsibility code include, but are not limited to: Government approvals, Government design reviews, environmental permit approvals by State regulators, Government Furnished Equipment (GFE) and Notice to Proceed (NTP) for phasing requirements. Code all activities not coded with a Government Responsibility Code to the Prime Contractor or Subcontractor responsible to perform the work. Activities shall not have more than one Responsibility Code. Examples of acceptable activity code values are: DOR (for the designer of record); ELEC (for the electrical subcontractor); MECH (for the mechanical subcontractor); and GOVT (for USACE). Unacceptable code values are abbreviations of the names of subcontractors.

3.3.2.6 Activity Work Area Coding

Assign Work Area code to activities based upon the work area in which the activity occurs. Define work areas based on resource constraints or space constraints that would preclude a resource, such as a particular trade or craft work crew, from working in more than one work area at a time due to restraints on resources or space. Examples of Work Area Coding include different areas within a floor of a building, different floors within a building, and different buildings within a complex of buildings.

Activities shall not have more than one Work Area Code. Not all activities are required to be Work Area coded. A lack of Work Area coding will indicate the activity is not resource or space constrained.

3.3.2.7 Contract Changes/Requests for Equitable Adjustment (REA) Coding

(MODF)

Assign Activity code to any activity or sequence of activities added to the schedule as a result of a Contract Modification, when approved by the Contracting Officer, with a Contract Changes/REA Code. Key all Code values to the Government's modification numbering system. Any activity or sequence of activities added to the schedule as a result of alleged constructive changes made by the Government may be added to a copy of the current schedule, subject to the approval of the Contracting Officer.

Assign Activity codes for these activities with a Contract Changes/REA Code. Key the code values to the Contractor's numbering system. Approval to add these activities does not necessarily mean the Government accepts responsibility and, therefore, liability for such activities and any associated impacts to the schedule, but rather the Government recognizes such activities are appropriately added to the schedule for the purposes of maintaining a realistic and meaningful schedule. Such activities shall not be Responsibility Coded to the Government unless approved. An activity shall not have more than one Contract Changes/REA Code.

3.3.2.8 Contract Line Item (CLIN) Coding (BIDI)

Code all activities to the CLIN on the Contract Line Item Schedule to which the activity belongs. An activity shall not contain more than one CLIN Item Code. CLIN Item code all activities, even when an activity is not cost loaded.

3.3.2.9 Phase of Work Coding (PHAS)

Assign Phase of Work Code to all activities based upon the phase of work in

SECTION 01 32 01.00 10 Page 4 which the activity occurs. Code activities to . Code fast track phases proposed by the Contractor to allow filtering and organizing the schedule by fast track design and construction packages. If the contract specifies construction phasing with separately defined performance periods, identify a Construction Phase Code to allow filtering and organizing the schedule accordingly. Each activity shall be identified with a single project phase and have only one Phase of Work code.

3.3.2.10 Category of Work Coding (CATW)

Assign Category of Work Code to all Activities based upon the category of work to which the activity belongs. Category of Work Code must include, but is not limited to: approvals, Acceptance, Procurement, Fabrication, Delivery, Weather Sensitive Installation, Non-Weather Sensitive Installation, Start-Up, Test and Turnover. Assign a Category of Work Code to each activity. Each activity shall have only one Category of Work Code.

3.3.2.11 Definable Features of Work Coding (FOW1, FOW2, FOW3)

Assign a Definable Feature of Work Code to appropriate activities based on the definable feature of work to which the activity belongs. Definable Feature of Work is defined in Specification Section 01 45 00.00 10 QUALITY CONTROL. An activity shall not have more than one Definable Feature of Work Code. Not all activities are required to be Definable Feature of Work Coded.

3.3.3 Scheduled Project Completion and Activity Calendars

The schedule interval shall extend from NTP date to the required contract completion date. The contract completion activity (End Project) shall finish based on the required contract duration in the accepted contract proposal, as adjusted for any approved contract time extensions. The first scheduled work period shall be the day after NTP is received by the Contractor. Schedule activities on a calendar to which the activity logically belongs. Activities may be assigned to a 7 day calendar when the contract assigns calendar day durations for the activity such as a Government Acceptance activity. If the Contractor intends to perform physical work less than seven days per week, schedule the associated activities on a calendar with non-work periods identified including weekends and holidays. Assign the Category of Work Code - Weather Sensitive Installation to those activities that are weather sensitive.

Original durations must account for anticipated normal adverse weather.

The Government will interpret all work periods not identified as non-work periods on each calendar as meaning the Contractor intends to perform work during those periods.

3.3.3.1 Project Start Date

The schedule shall start no earlier than the date on which the NTP was acknowledged. Include as the first activity in the project schedule an activity called "Start Project"( or NTP). The "Start Project" activity shall have an "ES" constraint date equal to the date that the NTP was acknowledged, and a zero day duration.

3.3.3.2 Schedule Constraints and Open Ended Logic

Constrain completion of the last activity in the schedule by the contract completion date. Schedule calculations shall result in a negative float when the calculated early finish date of the last activity is later than

SECTION 01 32 01.00 10 Page 5 the contract completion date. Include as the last activity in the project schedule an activity called "End Project". The "End Project" activity shall have an "LF" constraint date equal to the contract completion date for the project, and with a zero day duration or by using the "project must finish by" date in the scheduling software. The schedule shall have no constrained dates other than those specified in the contract. The use of artificial float constraints such as "zero fee float" or "zero total float" are typically prohibited. There shall only be 2 open ended activities:

Start Project (or NTP) with no predecessor logic and End Project with no successor logic.

3.3.3.3 Early Project Completion

In the event the Preliminary or Initial project schedule calculates an early completion date of the last activity prior to the contract completion date, identify those activities that it intends to accelerate and/or those activities that are scheduled in parallel to support the Contractor's "early" completion. The last activity shall have a late finish constraint equal to the contract completion date and the schedule will calculate positive float. The Government will not approve an early completion schedule with zero float on the longest path. The Government is under no obligation to accelerate activities for which it is responsible to support a proposed early contract completion.

3.3.4 Interim Completion Dates

Constrain contractually specified interim completion dates to show negative float when the calculated early finish date of the last activity in that phase is later than the specified interim completion date.

3.3.4.1 Start Phase

Include as the first activity for a project phase an activity called "Start Phase X" where "X" refers to the phase of work. The "Start Phase X" activity shall have an "ES" constraint date equal to the date on which the NTP was acknowledged, and a zero day duration.

3.3.4.2 End Phase

Include as the last activity for a project phase an activity called "End Phase X" where "X" refers to the phase of work. The "End Phase X" activity shall have an "LF" constraint date equal to the specified completion date for that phase and a zero day duration.

3.3.4.3 Phase "X" Hammock

Include a hammock type activity for each project phase called "Phase X" where "X" refers to the phase of work.