Part_V-Prince_George_s_County_Specifications__Special_Provisions__MSHA_Inserts__Details_and_Permit_List__1_.pdf

Part V - Prince George’s County Specifications, Special Provisions, MSHA Special Provision Inserts, Standard Details, and List of Permits and Authorizations

Section I Section II Section III Section IV Section V

Special Provisions-Part C&D Technical Specifications MSHA Special Provision Inserts Standard Details List of Permits and Authorizations

Section I-Special Provisions Parts C & D

Special Provisions (Part C)

1.1 SPECIAL CONDITIONS: GENERAL SPECIFICATIONS PART C

This is to advise the Contractor that, except as provided otherwise in these Special Conditions, all work covered by this Contract shall be performed in accordance with the Prince George’s County Department of the Public Works and Transportation’s Section II Technical Specifications, hereinafter called the “Specifications”, and included herein; and Maryland State Highway Administration (MSHA) Standard Specifications for Construction and Materials as of July 2021. Where the State and County Specifications are in conflict, the County Specifications shall govern. Reference to the MSHA Standard Specifications for Construction and Materials shall be for the 2021 publication and all revisions thereof. Reference to WSSC Standard Details shall mean in accordance with the Washington Suburban Sanitary Commission Standard Specifications and Standard Details dated July 2019 and November 2016 respectively, revisions thereof and additions thereto, and WSSC Special provisions included herein. Reference to ASTM Specifications shall mean the latest Specifications of the American Society for Testing and Materials. All work related to Maintenance of Traffic shall be in accordance with the latest issue of the MUTCD. All traffic control signal restoration work shall comply with and be constructed in accordance with the MUTCD, latest edition, the Prince George’s County Specifications for Traffic Control Signals, dated March 2012.

All work on this Contract will be constructed in accordance with the “Americans with Disabilities Act”, as applicable.

These Special Conditions are hereby made part of this Contract. In case of any conflict with any part of these Specifications, the Special Conditions shall govern. The various items under this Contract shall be paid for as set forth in the Proposal.

1.2 SCOPE OF WORK (PART C)

This part of the Contract will cover Part C of the Calvert Hills/College Park Storm Drain Improvement Project and will consist of replacing existing roadway storm drain systems, constructing new storm drain systems, sidewalk improvements, repaving the roadways within the project limits constructing an underground stormwater management vault system, constructing a sediment and trash collection system , restoration of an existing softball field, and related improvements in College Park. These bid specifications cover all labor, equipment, materials and supervision required for the execution of the work as specified herein. The Contractor shall supervise and direct the work, using their best skill and attention. The Contractor shall be solely responsible for all construction means, methods, techniques, sequences and procedures and for coordinating all portions of the work under the Contract.

1.3 MAINTENANCE OF TRAFFIC

The work involved in the construction of under this Contract shall be handled in a manner which will cause the minimum interruption to pedestrian and vehicular traffic through the areas of the proposed work in accordance with Section 104, and the MUTCD, latest edition.

All Maintenance of Traffic (MOT) will be provided in accordance with the MOT plans included in the contract documents. The contractor has the option of submitting alternate MOT plans to the Engineer.

The Engineer may, whenever traffic conditions make it possible, permit the Contractor to close the roads or portions thereof to traffic. Where traffic conditions make it impossible to close the road to traffic, the Contractor shall provide at least two (2) competent, courteous and neat flagmen for use at all times. These flagmen shall be equipped with safety vests.

Additional flagmen shall be provided by the Contractor at intersections and other points where traffic conditions, in the opinion of the Engineer, makes flagmen necessary. If needed, the contractor may be required to submit a traffic detour plan to the Engineer for approval.

The streets and roads where there is on-street parking that conflicts with the proposed work, the Contractor shall post notices forty-eight (48) hours in advance of the need to have the vehicles relocated. The signs, to serve as advance notices, will be furnished by the contractor and the templates for these signs will be provided by the Engineer at no cost to the Contractor. Removal of vehicles in the way of the Contractor's work operation will be the responsibility of the Contractor.

The Contractor shall suspend operations during the morning rush hours of 6:00 AM to 9:00 AM, and the evening rush hours of 3:00 PM to 6:30 PM.

Except for the bid items specified and provided for elsewhere in this proposal, the cost of maintaining traffic, as noted above, shall be considered a subsidiary obligation of the Contract for which no additional payment will be made.

1.4 UTILITIES

(a) Attention of the Contractor is directed to the presence of water, sewer, gas mains, electrical wires, conduit, communications cables, poles and house service connections within the limits of construction. The Contractor shall exercise special care and extreme caution to protect and avoid damage to utility company facilities as described in the preceding sentence. The Contractor shall take into consideration the adjustments and installations by public utilities in areas within the limits of this Contract. Existing utilities have been generally located and shown on the Plans as they are believed to exist; however, the County assumes no responsibility for the accuracy of these locations. In the event of a disruption of service of any utility break, the Contractor shall immediately notify the appropriate utility’s representative and the County’s Project Engineer.

Prior to ordering any storm drain or water/sewer materials, the Contractor shall locate and test pit (as approved by the County’s Project Engineer) any underground facilities that appear to be in conflict in order to determine if conflicts exist. In the event that conflicts may be possible, this information shall immediately be forwarded to the County’s representative for review and resolution. Material ordered prior to obtaining test pit information will not be considered in any request from the Contractor for any equitable adjustments due to existing utility conflicts.

(b) The Contractor shall locate all existing utilities and be responsible for their safety.

Should any existing utilities be damaged or destroyed due to the operations of the Contractor, the contractor must contact the utility companies to ensure that the damaged or destroyed components shall be immediately replaced or repaired as necessary to restore the utility to a satisfactory operating condition. These repairs or replacements shall be at no additional expense to the County or the owner of the utility.

(c) The existing utilities requiring relocation or adjustments shall be relocated or adjusted by the agency responsible for their maintenance or by the owner of the utility unless otherwise indicated in the Contract Documents.

The Contractor shall notify all utilities involved, including but not limited to the Washington Suburban Sanitary Commission, Washington Gas, the Potomac Electric Power Company, Comcast and Verizon Maryland, Inc., at least one week prior to starting work in the areas in which there are water, electric, and telephone/cable services so that these organizations may have their representatives present. The utility companies will establish the lead-time necessary to meet the applicable utility work schedule and coordinate with the Contractor's work operations based upon the Contractor's overall plan. The Contractor shall assist the utility companies as necessary by providing line and grade for structure adjustments.

(d) Any submittal by the Contractor to vary the sequence of work and/or perform concurrent work in multiple phases differing from the recommended maintenance of traffic phasing, must be accompanied by an updated CPM schedule reflecting all utility relocations and adjustments. The Contractor shall be responsible, upon gaining approval, for coordinating utility relocations and adjustments with the affected utility owners and the County Project Engineer. All requirements and lead times as stated in the Utility Statement and Special Conditions will remain in effect unless written approval for the utility company and the Engineer is received by the Contractor prior to commencement of any requested work.

(e) The Contractor shall have no claims for any delay that may occur in changing or relocating any of the services. The Contractor will be responsible for any adjustment of utility structures required by the normal prosecution of the work and shall bear the cost thereof. The Contractor shall also call "Miss Utility" on 1-800-257-7777 at least forty-eight (48) hours in advance of construction, between the hours of 7:00 AM and 5:00 PM, Monday through Friday.

(f) All surface adjustments to WSSC facilities, such as water and sewer manholes, water valve boxes, etc., must be physical adjustments in accordance with these Special Provisions. The use of Rite-Hite adjustment rings on WSSC facilities is not allowed.

(g) The following known utility companies have existing facilities or may have adjustments and installations within the limits of this Contract:

PEPCO (Overhead) Sheku Jawara (Distribution) 301-967-5814

PEPCO has aerial electrical facilities within the limits of this project. The Contractor shall use extreme caution while performing work under or near the existing aerial lines and shall strictly adhere to the requirements of the contract documents. PEPCO’s intention is to have all work completed by the anticipated NTP date; however, the Contractor shall be prepared to adjust their work schedule in the event work is not finished. As indicated on the contract plans, several utility poles will require bracing during excavation activities. Notify PEPCO a minimum of 4 weeks in advance for pole bracing. Materials required for pole bracing shall be provided to PEPCO by the Contractor.

Washington Gas Kyle Dunn 571-591-4589

Washington Gas has underground gas lines within the limit of the project along Dartmouth Road, Harvard Road, Bowdoin Avenue, Erskine Road, and Drexel Road that are to remain. The Contractor shall provide Washington Gas with at least 10 working days’ notice for adjustment of any gas-related appurtenance.

Washington Gas may abandon facilities within the limits of the project. Should the Contractor encounter these facilities during structure, trench or roadway excavation, the Contractor shall contact Washington Gas (48 hours notice required) to verify that the lines are abandoned and purged. Upon verification, the lines shall be removed at no additional cost to the County and Washington Gas. Removal of abandoned facilities will be incidental to the applicable excavation item.

Washington Suburban Sanitary Commission (WSSC) Jason Flory 301-206-4300

WSSC has underground water and sewer facilities within the limits of the project. All WSSC utility protection activities are to be performed by the Contractor in accordance with the approved plans and conditions, WSSC Standard Specifications and WSSC Standard Details (latest versions of specifications and standards at the time of bid).

The Contractor shall contact Mr. Flory, Pipeline Construction Division, between the hours of 7:30 AM and 4:00 PM at least five (5) days prior to the start of construction to arrange a preconstruction meeting. See also WSSC Utility Work Special Provision.

(h) Working around or protecting existing aerial and underground utilities, regardless of ownership (State, County, public or private); removal of temporary materials from the adjusted utilities prior to the placement of hot mix asphalt; installation of temporary utility service connections; cooperation with the owners of the utilities and with other Contractors will not be measured for payment and the cost will be incidental to the items specified in the proposal.

1.5 SPECIAL PROVISIONS: MODFICATIONS TO MSHA SPECIFICATIONS

CATEGORY 100

PRELIMINARY

SECTION 120 – TREE PRESERVATION

120.02 MATERIALS.

120.02.01 Tree Preservation Program (TPP).

DELETE: The first paragraph in its entirety.

INSERT: The Tree Protection Plans and project specifications in Part V of the Bid Manual shall serve as the TPP, which establish the goals and specify the procedures for tree planking, tree branch pruning, tree removal, tree root pruning, tree fertilizing, air spading, and other tree preservation operations to protect trees and vegetation within the

TPA.

CATEGORY 700

LANDSCAPING

SECTION 712 – TREE BRANCH PRUNING

712.01 DESCRIPTION.

DELETE: The first sentence.

INSERT: Prune tree branches as indicated on the Tree Protection Plans.

SECTION 715 – TREE ROOT PRUNING

715.01 DESCRIPTION.

INSERT: Prune tree roots as indicated on the Tree Protection Plans.

715.03.06 Equipment.

ADD: After the end of the first sentence.

In areas where air spading is required, only hand tools shall be used to selectively prune smaller roots under the supervision of a Licensed Tree Expert (LTE).

1.1 SPECIAL CONDITIONS: GENERAL SPECIFICATIONS PART C

This is to advise the Contractor that, except as provided otherwise in these Special Conditions, all work covered by this Contract shall be performed in accordance with the Prince George’s County Department of the Public Works and Transportation’s Section II Technical Specifications, hereinafter called the “Specifications”, and included herein; and Maryland State Highway Administration (MSHA) Standard Specifications for Construction and Materials as of July 2021. Where the State and County Specifications are in conflict, the County Specifications shall govern. Reference to the MSHA Standard Specifications for Construction and Materials shall be for the 2021 publication and all revisions thereof. Reference to WSSC Standard Details shall mean in accordance with the Washington Suburban Sanitary Commission Standard Specifications and Standard Details dated July 2019 and November 2016 respectively, revisions thereof and additions thereto, and WSSC Special provisions included herein. Reference to ASTM Specifications shall mean the latest Specifications of the American Society for Testing and Materials. All work related to Maintenance of Traffic shall be in accordance with the latest issue of the MUTCD. All traffic control signal restoration work shall comply with and be constructed in accordance with the MUTCD, latest edition, the Prince George’s County Specifications for Traffic Control Signals, dated March 2012.

All work on this Contract will be constructed in accordance with the “Americans with Disabilities Act”, as applicable.

These Special Conditions are hereby made part of this Contract. In case of any conflict with any part of these Specifications, the Special Conditions shall govern. The various items under this Contract shall be paid for as set forth in the Proposal.

1.2 SCOPE OF WORK (PART C)

This part of the Contract will cover Part C of the Calvert Hills/College Park Storm Drain Improvement Project and will consist of replacing existing roadway storm drain systems, constructing new storm drain systems, sidewalk improvements, repaving the roadways within the project limits constructing an underground stormwater management vault system, constructing a sediment and trash collection system , restoration of an existing softball field, and related improvements in College Park. These bid specifications cover all labor, equipment, materials and supervision required for the execution of the work as specified herein. The Contractor shall supervise and direct the work, using their best skill and attention. The Contractor shall be solely responsible for all construction means, methods, techniques, sequences and procedures and for coordinating all portions of the work under the Contract.

1.3 MAINTENANCE OF TRAFFIC

The work involved in the construction of under this Contract shall be handled in a manner which will cause the minimum interruption to pedestrian and vehicular traffic through the areas of the proposed work in accordance with Section 104, and the MUTCD, latest edition.

All Maintenance of Traffic (MOT) will be provided in accordance with the MOT plans included in the contract documents. The contractor has the option of submitting alternate MOT plans to the Engineer.

The Engineer may, whenever traffic conditions make it possible, permit the Contractor to close the roads or portions thereof to traffic. Where traffic conditions make it impossible to close the road to traffic, the Contractor shall provide at least two (2) competent, courteous and neat flagmen for use at all times. These flagmen shall be equipped with safety vests.

Additional flagmen shall be provided by the Contractor at intersections and other points where traffic conditions, in the opinion of the Engineer, makes flagmen necessary. If needed, the contractor may be required to submit a traffic detour plan to the Engineer for approval.

The streets and roads where there is on-street parking that conflicts with the proposed work, the Contractor shall post notices forty-eight (48) hours in advance of the need to have the vehicles relocated. The signs, to serve as advance notices, will be furnished by the contractor and the templates for these signs will be provided by the Engineer at no cost to the Contractor. Removal of vehicles in the way of the Contractor's work operation will be the responsibility of the Contractor.

The Contractor shall suspend operations during the morning rush hours of 6:00 AM to 9:00 AM, and the evening rush hours of 3:00 PM to 6:30 PM.

Except for the bid items specified and provided for elsewhere in this proposal, the cost of maintaining traffic, as noted above, shall be considered a subsidiary obligation of the Contract for which no additional payment will be made.

1.4 UTILITIES

(a) Attention of the Contractor is directed to the presence of water, sewer, gas mains, electrical wires, conduit, communications cables, poles and house service connections within the limits of construction. The Contractor shall exercise special care and extreme caution to protect and avoid damage to utility company facilities as described in the preceding sentence. The Contractor shall take into consideration the adjustments and installations by public utilities in areas within the limits of this Contract. Existing utilities have been generally located and shown on the Plans as they are believed to exist; however, the County assumes no responsibility for the accuracy of these locations. In the event of a disruption of service of any utility break, the Contractor shall immediately notify the appropriate utility’s representative and the County’s Project Engineer.

Prior to ordering any storm drain or water/sewer materials, the Contractor shall locate and test pit (as approved by the County’s Project Engineer) any underground facilities that appear to be in conflict in order to determine if conflicts exist. In the event that conflicts may be possible, this information shall immediately be forwarded to the County’s representative for review and resolution. Material ordered prior to obtaining test pit information will not be considered in any request from the Contractor for any equitable adjustments due to existing utility conflicts.

(b) The Contractor shall locate all existing utilities and be responsible for their safety.

Should any existing utilities be damaged or destroyed due to the operations of the Contractor, the contractor must contact the utility companies to ensure that the damaged or destroyed components shall be immediately replaced or repaired as necessary to restore the utility to a satisfactory operating condition. These repairs or replacements shall be at no additional expense to the County or the owner of the utility.

(c) The existing utilities requiring relocation or adjustments shall be relocated or adjusted by the agency responsible for their maintenance or by the owner of the utility unless otherwise indicated in the Contract Documents.

The Contractor shall notify all utilities involved, including but not limited to the Washington Suburban Sanitary Commission, Washington Gas, the Potomac Electric Power Company, Comcast and Verizon Maryland, Inc., at least one week prior to starting work in the areas in which there are water, electric, and telephone/cable services so that these organizations may have their representatives present. The utility companies will establish the lead-time necessary to meet the applicable utility work schedule and coordinate with the Contractor's work operations based upon the Contractor's overall plan. The Contractor shall assist the utility companies as necessary by providing line and grade for structure adjustments.

(d) Any submittal by the Contractor to vary the sequence of work and/or perform concurrent work in multiple phases differing from the recommended maintenance of traffic phasing, must be accompanied by an updated CPM schedule reflecting all utility relocations and adjustments. The Contractor shall be responsible, upon gaining approval, for coordinating utility relocations and adjustments with the affected utility owners and the County Project Engineer. All requirements and lead times as stated in the Utility Statement and Special Conditions will remain in effect unless written approval for the utility company and the Engineer is received by the Contractor prior to commencement of any requested work.

(e) The Contractor shall have no claims for any delay that may occur in changing or relocating any of the services. The Contractor will be responsible for any adjustment of utility structures required by the normal prosecution of the work and shall bear the cost thereof. The Contractor shall also call "Miss Utility" on 1-800-257-7777 at least forty-eight (48) hours in advance of construction, between the hours of 7:00 AM and 5:00 PM, Monday through Friday.

(f) All surface adjustments to WSSC facilities, such as water and sewer manholes, water valve boxes, etc., must be physical adjustments in accordance with these Special Provisions. The use of Rite-Hite adjustment rings on WSSC facilities is not allowed.

(g) The following known utility companies have existing facilities or may have adjustments and installations within the limits of this Contract:

PEPCO (Overhead) Sheku Jawara (Distribution) 301-967-5814

PEPCO has aerial electrical facilities within the limits of this project. The Contractor shall use extreme caution while performing work under or near the existing aerial lines and shall strictly adhere to the requirements of the contract documents. PEPCO’s intention is to have all work completed by the anticipated NTP date; however, the Contractor shall be prepared to adjust their work schedule in the event work is not finished. As indicated on the contract plans, several utility poles will require bracing during excavation activities. Notify PEPCO a minimum of 4 weeks in advance for pole bracing. Materials required for pole bracing shall be provided to PEPCO by the Contractor.

Washington Gas Kyle Dunn 571-591-4589

Washington Gas has underground gas lines within the limit of the project along Dartmouth Road, Harvard Road, Bowdoin Avenue, Erskine Road, and Drexel Road that are to remain. The Contractor shall provide Washington Gas with at least 10 working days’ notice for adjustment of any gas-related appurtenance.

Washington Gas may abandon facilities within the limits of the project. Should the Contractor encounter these facilities during structure, trench or roadway excavation, the Contractor shall contact Washington Gas (48 hours notice required) to verify that the lines are abandoned and purged. Upon verification, the lines shall be removed at no additional cost to the County and Washington Gas. Removal of abandoned facilities will be incidental to the applicable excavation item.

Washington Suburban Sanitary Commission (WSSC) Jason Flory 301-206-4300

WSSC has underground water and sewer facilities within the limits of the project. All WSSC utility protection activities are to be performed by the Contractor in accordance with the approved plans and conditions, WSSC Standard Specifications and WSSC Standard Details (latest versions of specifications and standards at the time of bid).

The Contractor shall contact Mr. Flory, Pipeline Construction Division, between the hours of 7:30 AM and 4:00 PM at least five (5) days prior to the start of construction to arrange a preconstruction meeting. See also WSSC Utility Work Special Provision.

In areas where air spading is required, only hand tools shall be used to selectively prune smaller roots under the supervision of a Licensed Tree Expert (LTE).

715.03.08 Operations.

DELETE: The entire paragraph.

INSERT: Meet ANSI A300 standards for Tree Care Operations. In areas where air spading is specified, use hand tools to selectively prune smaller roots that interfere with utility installation under the supervision of an LTE. Significant roots shall be protected and wrapped with protective material to minimize damage and desiccation and remain undisturbed as directed by the LTE. The excavated area shall be backfilled with excavated soil and compacted to approximately 80% around the roots.

In areas where air spading is not specified, cleanly cut tree roots along the approved line to a depth of 24 in., or to the depth specified in the Tree Preservation Program, and immediately backfill trenches with excavated soil.

SECTION 716 – TREE FERTILIZING

716.01 DESCRIPTION.

INSERT: Fertilize trees as indicated on the Tree Protection Plans.

716.03.07 Operations.

DELETE: (c) Operation 3 – Broadcast Fertilizing. in its entirety.

SPECIAL PROVISIONS: BID ITEMS PART C

1.6 CLEARING AND GRUBBING

DESCRIPTION

Refer to Section 101.01 and Section 120 of the MDOT SHA Standard Specifications for Construction and Materials. The areas to be cleared and grubbed include those necessary for the underground vaults, sediment and trash collection system, sidewalk, and softball field construction as shown within the Limit of Disturbance (LOD) shown in the Contract Documents or as directed by the Engineer. The areas beyond the LOD and tree protection fencing (TPF) are designated as Tree Preservation Areas (TPA). No tree clearing or tree impacts are permitted within the TPA unless indicated otherwise on the Contract Documents.

MATERIALS:

Not Applicable

CONSTRUCTION

Refer to Section 101.03 of the MSHA Standard Specifications, its Special Provisions Insert.

DELETE: Section 101.03.05c in its entirety. All areas are to be grubbed regardless of embankment height, unless within the Limit of Work as delineated in the Contract

MEASUREMENT AND PAYMENT

Refer to Section 101.04 of the MDOT SHA Standard Specifications for Construction and Materials.

1.7 AS-BUILT SURVEY

Complete an as-built survey and submit as-built plans which reflect the elevation and locations of the constructed elements and affirms that underground vaults and associated structures are constructed as specified or are functionally equivalent to the designs in the approved Hydrologic and Hydraulic data found on the plans, revising the as-built plans as needed until approved.

The as-built plans shall contain green line as-built surveys of the project area signed and sealed by a Professional Land Surveyor (PLS) who is registered and licensed in the State of Maryland. The as-built survey data shall be overlaid on the appropriate Contract plan sheet(s) and profile sheets, at the same scale and datum, and are coordinately correct. The as-built survey data shall be green in color, clearly legible and easily distinguishable from the Contract Document information. The as-built surveys shall include the following.

(a) Contours. One-foot contour intervals or otherwise match the contour intervals shown in the Contract Documents. Contours shall cover the entire Limits of Disturbance.

(b) Drainage and Stormwater Management Structures. Includes all drainage structures within the project area, including but not limited to inlets, curb openings, manholes, end sections, headwalls, wingwalls, end walls and imbricated riprap walls. As-built data shall include but is not limited to top of structure elevations, structure lengths, and structure widths; pipe and culvert inverts; pipe and culvert sizes, materials, and flow directions; and opening sizes and elevations. Contractor shall also include a video camera inspection report (in a digital flash drive) of pipe systems 48 inches or less as part of the final “As Built” construction requirements.

(c) Riprap and Aggregate. Includes dimensions of riprap inlet, outlet and toe protection and any other element show a surface layer of aggregate or riprap.

(d) Roadway Structures. Includes all sidewalks, sidewalk ramps, traffic barrier, and signs. As-built data shall only include any horizontal deviation from the plans which exceed a tolerance of 1 foot.

(e) Certification. Seal, signature, license number, and date of license expiration of the

PLS who completes the as-built survey.

Upon completion of constructing facilities and practices, perform as-built survey and submit as-built plans. Upon written request, the County will provide CADD files in DGN format to facilitate completion of the as-built plans. Submit requests to the Engineer. Partial submittals of the as-built plans may be made as construction of each individual phase is completed. Otherwise, submit the entire set of as-built plans within 30 days of completion of construction activities associated with all facilities and practices but not including establishment of the specified landscaping items. The landscaping phase of project need not be completed to submit the as-built plans. Resubmit the as-built plans with responses to all County comments that may be received. Resubmit as many times as necessary, updating the as-built plans as needed to address all County comments.

As-Built Survey will not be measured but will be paid for at the Contract lump sum price.

The payment will be full compensation for all material, labor, equipment, tools, and incidentals necessary to complete the work. No additional compensation will be considered for addressing comments received on the submitted as-built plans, revisions to the as-built plans, or any construction activities necessary to address comments that may have been received or necessary to revise the as-built plans.

1.8 EXCAVATION - CLASS 1

DESCRIPTION:

Refer to Section 201.01 of the MSHA Specifications and its amendment in Prince George's County DPW&T Technical Specifications. This work shall consist of roadway excavation and grading associated with pavement, sidewalk and curb and gutter construction, except where these elements are being removed and replaced in the same location, or, where in the sole opinion of the Engineer, incidental and/or minor excavation or grading exceeds incidental grading included in the various items in the Contract for new construction.

Not applicable.

CONSTRUCTION:

Refer to Section 201.03 of the MSHA Specifications. This work involves excavation and grading for new construction outside the limits of existing structures as directed by the Engineer. Any existing grading that requires minor adjustment shall be considered incidental to the pay items of existing structures, such as removal and replacement of curbs and gutters, sidewalks, storm drain or other similar items, and will not be included in this work item.

MEASUREMENT AND PAYMENT:

Refer to Section 201.04 of the MSHA Specifications. Excavation will be measured and paid for at the Contract unit price per cubic yard. The payment will be full compensation for excavation, hauling, blasting, formation of embankments and backfills, disposing of excess and unsuitable materials, preparation and completion of sub-grade and shoulders except as otherwise specified, rounded and transition slopes, and for all materials, labor, supervision, equipment, tools, and incidentals necessary to complete the work.

1.9 BORROW EXCAVATION

Refer to Section 203.01 of the MSHA Specifications and its amendment in Prince George's County DPW&T Technical Specifications. This work shall consist of backfill for pavement removal areas where grading is associated with new sidewalk construction, where in the sole opinion of the Engineer, incidental and/or minor excavation or grading exceeds

Refer to Section 203.02 of the MSHA Specifications.

715.03.08 Operations.

DELETE: The entire paragraph.

INSERT: Meet ANSI A300 standards for Tree Care Operations. In areas where air spading is specified, use hand tools to selectively prune smaller roots that interfere with utility installation under the supervision of an LTE. Significant roots shall be protected and wrapped with protective material to minimize damage and desiccation and remain undisturbed as directed by the LTE. The excavated area shall be backfilled with excavated soil and compacted to approximately 80% around the roots.

In areas where air spading is not specified, cleanly cut tree roots along the approved line to a depth of 24 in., or to the depth specified in the Tree Preservation Program, and immediately backfill trenches with excavated soil.

SECTION 716 – TREE FERTILIZING

716.01 DESCRIPTION.

INSERT: Fertilize trees as indicated on the Tree Protection Plans.

716.03.07 Operations.

DELETE: (c) Operation 3 – Broadcast Fertilizing. in its entirety.

SPECIAL PROVISIONS: BID ITEMS PART C

1.6 CLEARING AND GRUBBING

Refer to Section 101.01 and Section 120 of the MDOT SHA Standard Specifications for Construction and Materials. The areas to be cleared and grubbed include those necessary for the underground vaults, sediment and trash collection system, sidewalk, and softball field construction as shown within the Limit of Disturbance (LOD) shown in the Contract Documents or as directed by the Engineer. The areas beyond the LOD and tree protection fencing (TPF) are designated as Tree Preservation Areas (TPA). No tree clearing or tree impacts are permitted within the TPA unless indicated otherwise on the Contract

Refer to Section 101.03 of the MSHA Standard Specifications, its Special Provisions Insert.

DELETE: Section 101.03.05c in its entirety. All areas are to be grubbed regardless of embankment height, unless within the Limit of Work as delineated in the Contract

Refer to Section 101.04 of the MDOT SHA Standard Specifications for Construction and Materials.

1.7 AS-BUILT SURVEY

Complete an as-built survey and submit as-built plans which reflect the elevation and locations of the constructed elements and affirms that underground vaults and associated structures are constructed as specified or are functionally equivalent to the designs in the approved Hydrologic and Hydraulic data found on the plans, revising the as-built plans as needed until approved.

The as-built plans shall contain green line as-built surveys of the project area signed and sealed by a Professional Land Surveyor (PLS) who is registered and licensed in the State of Maryland. The as-built survey data shall be overlaid on the appropriate Contract plan sheet(s) and profile sheets, at the same scale and datum, and are coordinately correct. The as-built survey data shall be green in color, clearly legible and easily distinguishable from the Contract Document information. The as-built surveys shall include the following.

(a) Contours. One-foot contour intervals or otherwise match the contour intervals shown in the Contract Documents. Contours shall cover the entire Limits of Disturbance.

(b) Drainage and Stormwater Management Structures. Includes all drainage structures within the project area, including but not limited to inlets, curb openings, manholes, end sections, headwalls, wingwalls, end walls and imbricated riprap walls. As-built data shall include but is not limited to top of structure elevations, structure lengths, and structure widths; pipe and culvert inverts; pipe and culvert sizes, materials, and flow directions; and opening sizes and elevations. Contractor shall also include a video camera inspection report (in a digital flash drive) of pipe systems 48 inches or less as part of the final “As Built” construction requirements.

(c) Riprap and Aggregate. Includes dimensions of riprap inlet, outlet and toe protection and any other element show a surface layer of aggregate or riprap.

(d) Roadway Structures. Includes all sidewalks, sidewalk ramps, traffic barrier, and signs. As-built data shall only include any horizontal deviation from the plans which exceed a tolerance of 1 foot.

(e) Certification. Seal, signature, license number, and date of license expiration of the

PLS who completes the as-built survey.

Upon completion of constructing facilities and practices, perform as-built survey and submit as-built plans. Upon written request, the County will provide CADD files in DGN format to facilitate completion of the as-built plans. Submit requests to the Engineer. Partial submittals of the as-built plans may be made as construction of each individual phase is completed. Otherwise, submit the entire set of as-built plans within 30 days of completion of construction activities associated with all facilities and practices but not including establishment of the specified landscaping items. The landscaping phase of project need not be completed to submit the as-built plans. Resubmit the as-built plans with responses to all County comments that may be received. Resubmit as many times as necessary, updating the as-built plans as needed to address all County comments.

As-Built Survey will not be measured but will be paid for at the Contract lump sum price.

The payment will be full compensation for all material, labor, equipment, tools, and incidentals necessary to complete the work. No additional compensation will be considered for addressing comments received on the submitted as-built plans, revisions to the as-built plans, or any construction activities necessary to address comments that may have been received or necessary to revise the as-built plans.

1.8 EXCAVATION - CLASS 1

Refer to Section 201.01 of the MSHA Specifications and its amendment in Prince George's County DPW&T Technical Specifications. This work shall consist of roadway excavation and grading associated with pavement, sidewalk and curb and gutter construction, except where these elements are being removed and replaced in the same location, or, where in the sole opinion of the Engineer, incidental and/or minor excavation or grading exceeds

Not applicable.

Refer to Section 201.03 of the MSHA Specifications. This work involves excavation and grading for new construction outside the limits of existing structures as directed by the Engineer. Any existing grading that requires minor adjustment shall be considered incidental to the pay items of existing structures, such as removal and replacement of curbs and gutters, sidewalks, storm drain or other similar items, and will not be included in this work item.

Refer to Section 201.04 of the MSHA Specifications. Excavation will be measured and paid for at the Contract unit price per cubic yard. The payment will be full compensation for excavation, hauling, blasting, formation of embankments and backfills, disposing of excess and unsuitable materials, preparation and completion of sub-grade and shoulders except as otherwise specified, rounded and transition slopes, and for all materials, labor, supervision, equipment, tools, and incidentals necessary to complete the work.

1.9 BORROW EXCAVATION

Refer to Section 203.01 of the MSHA Specifications and its amendment in Prince George's County DPW&T Technical Specifications. This work shall consist of backfill for pavement removal areas where grading is associated with new sidewalk construction, where in the sole opinion of the Engineer, incidental and/or minor excavation or grading exceeds

Refer to Section 203.02 of the MSHA Specifications.

Refer to Section 203.03 of the MSHA Specifications and its amendment in Prince George’s County DPW&T Technical Specifications.

Refer to Section 203.04 of the MSHA Specifications and its amendment in Prince George's County DPW&T Technical Specifications. Borrow excavation will be measured and paid for at the Contract unit price per cubic yard. The payment will be full compensation for excavation, hauling, blasting, formation of embankments and backfills, disposing of excess and unsuitable materials, preparation and completion of sub-grade and shoulders except as otherwise specified, rounded and transition slopes, and for all materials, labor, supervision, equipment, tools, and incidentals necessary to complete the work.

1.10 SOFTBALL FIELD RESTORATION

The work to be performed under this section consists of all the required labor, material, equipment and services necessary to complete the restoration of the softball field, as shown on the drawings. It includes excavating, backfilling, rough and fine grading to elevations as shown for completion of the work, fencing, backstop, benches, etc. (Replacement in kind of all existing Softball field features) as shown on the contract drawings.

MATERIALS

A. The skinned area soil mix shall be Dura Edge Classic Infield Mix (or approved equal) and shall be a blend of 72% Sand, 12% Silt, 16% Clay.

A. Clearing Site

The plan shows areas to be cleared.

1. Clearing

i. Limits of clearing shall be confined to the areas as shown on the plans, or as required to complete the work. The clearing line is to be marked in the field by the Contractor. Activity by the Contractor beyond these limits shall be at the authorization of the Engineer.

ii. Clearing shall include demolition and removal of all trees, saplings, brush, downed timber, shrubs, rotten wood, rubbish, vines, undergrowth, and any other vegetation from the area of the softball field. Demolition shall include root system of trees, as well as removal of fences and incidental structures.

2. Grubbing

i. Limits of grubbing shall coincide with limits of clearing unless otherwise specified.

ii. Grubbing shall include removing from the ground all stumps. Roots and stubs, brush, organic materials and debris within the limits of grubbing.

3. Disposal

i. Burning of materials on site shall not be permitted.

ii. Where chips are to be utilized on a Site the trees may be chipped

4. General

i. The Contractor shall visit the site to determine the existing conditions and shall be held responsible for all demolition covered under these specifications.

ii. The Contractor’s attention is specifically directed to the Maryland State

Highway Administration Specifications, Section 712, Tree Branch Pruning and Section 715- Tree Root Pruning.

5. Field Quality Control

i. The Engineer shall approve the clearing line prior to any clearing.

ii. After clearing and grubbing has been completed, the Engineer will inspect damage to remaining trees and shall direct the Contractor to repair damage.

Repairs shall be done by a Maryland Licensed Tree Expert at no expense to County.

6. Demolition On Site

i. Protection to Persons and Property: All work shall be scheduled and executed in a careful manner with due consideration for workmen and the public, and to prevent injury to persons or property.

ii. Use of explosives: Do not use any blasting on the project site without written permission of the Engineer and unless it is done in accordance with applicable laws and regulations.

7. Clean-Up

i. Remove from the site any stumps, dead trees, broken and loose branches, rubbish, and debris resulting from demolition, unless otherwise specified.

ii. Leave the site in a safe, clean condition.

iii. After demolition and removal work is completed, do not store on site and materials resulting from demolition or any tools and equipment used for work.

B. Grading

The Softball Field Layout Plan shows the extent of area to be graded. All grades shall be in accordance with the plans.

1. Soil Tests: Soil tests have not been made to determine the characteristics of the soil and the level of the water table, except as shown on the plans.

2. Subsurface Conditions: The Contractor is to examine information shown on the plans, and is to examine the soil, making such tests as deemed necessary to determine the conditions and nature of the soil.

3. Benchmarks and Monuments: Carefully maintain all benchmarks, monuments, and other reference points. If disturbed or destroyed, replace as directed.

4. Finished Grades: Refer to the required grade elevations indicated. If finished grades shown by spot elevations conflict with those shown by contours, spot elevations shall be used. Unless indicated, the project site area shall be given uniform slopes between points for which finished grade are shown, or between such points and existing established grade, except vertical curves or rounding’s shall be provided at abrupt changes in slope. Perform all grading required to bring the entire project area to finished grades.

5. Debris: Remove from the site all debris and excavated material not suitable, or needed for fill.

C. Topsoiling, Seeding, and Sod

The contract work to be performed under this section consists of all the required material, labor, equipment, and services necessary to install topsoil, as shown on the drawings or as specified herein. Natural vegetation must be retained and protected as provided for in the drawings. The permanent final vegetation and structures must be installed as soon as practical in the development of this site.

1. Topsoil

i. Stripped topsoil is to be reasonably free from woody plants, stoned over one inch (1”) in size, construction debris, excavated material, deleterious matter.

ii. Topsoil is to be approved by the Engineer before installation and is to consist of a sandy loam containing 2.0 to 2.5 percent organic matter by weight, free of debris, rock, and gravel.

iii. Furnish and spread four inches (4”) of topsoil over disturbed areas.

iv. Spread evenly to true contours and hand rake to an even, smooth surface ready for seeding.

v. Regrade and fill low spots after shrinkage.

vi. Existing topsoil, if acceptable, may be used as far as it will go. New topsoil is to be brought in, as necessary to build up required grading. Any tests required to determine the quality of the topsoil, both existing and new, will be made where, and as directed by the Engineer, at no expense to the County.

2. Seeding

i. Grass seed shall be Maryland State Certified and mixed in the following proportions:

Species Seeding Rate

Tall Fescue (Lolium arundinaceum) 150 lb/ac / 3.20 lb/1000 ft2 (formerly Festuca arundinacea)

Kentucky Bluegrass (Poa pratensis) 100 lb/ac / 2.30 lb/1000 ft2 Perennial Ryegrass (Lolium perenne) 50 lb/ac / 1.15 lb/1000 ft2

Note: Turf-type cultivars of tall fescue and Kentucky bluegrass must be selected based on recommendations of the University of Maryland Cooperative Extension Service, Agronomy Mimeo 77.

3. Seeding Operation

i. The seed shall be spread by mechanical spreaders at the rate previously specified. Seeding shall be done in two directions, the second being perpendicular to the first, using one-half of the amount of seed in each direction.

The seed shall be in firm contact with the seed bed and raked into the top one-fourth (1/4”) of topsoil. The Contractor shall have the option of rolling the seed into the topsoil instead of raking. If the Contractor elects to roll, the roller shall weigh no more the 150 pounds.

ii. Fertilizer shall be a commercial chemical fertilizer, 50% of the nitrogen which is derived from natural organic sources of urea form. The fertilizer shall contain the following percentages by weight:

20% of nitrogen 20% phosphoric acid 10% potash

Fertilizer shall be applied at the rate of 220 pounds per acre to the areas to be seeded and sodded.

iii. Ground Limestone shall conform to Maryland State Highway Administration Specification 920.02.01.

iv. In no event shall more than forty-eight (48) hours elapse between cutting and planting of the soil.

v. Water shall be clean and potable, suitable for drinking.

vi. Straw Mulch shall consist of thoroughly threshed wheat, rye or oat straw.

vii. Binder shall be Terra Tack AR or other approved equal. Follow application rates as specified by the manufacturer.

4. Sod

i. Sod shall be cultivated bluegrass fescue mixture grown in an established turf nursery for at least two (2) years before lifting. Sod shall be free from insects, grubs, and apparent disease, and shall show proof of a current Nursery Inspection Certificate.

ii. Sod shall have been mowed prior to stripping and shall have been maintained for a minimum of three (3) months at or near the height of the final clipping at the nursery. Maximum height: two and one-half inches (2-1/2”).

iii. Sod shall be machine stripped at a uniform soil thickness of approximately one inch (1”), plus-or-minus one-quarter inch (1/4”). Though thinner cuts tend to accelerate knitting and are, therefore, preferred, the minimum acceptable soil thickness shall be three-quarter inch (3/4”). Measurement for thickness shall include the growth and thatch.

iv. Individual pieces of soil shall be cut to the supplier’s standard width and length. (Maximum allowable deviation from standard width and length is five

(5) percent. There shall be no broken pads, torn or uneven ends.

v. In no event shall more than forty-eight (48) hours lapse between the cutting and planting of sod.

vi. Before placing sod on any surface, all shaping and dressing of such surfaces shall have been completed to grades on plan. The completed areas to be sodded shall present a smooth, uniform, well tilled surface, and any raking required to accomplish this shall be done immediately prior to placing the sod.

vii. Sodding shall be performed during the…