00676-000-13-AS-2 Specifications.pdf

PROJECT FOR

PIDCOCK CREEK DAM REPAIRS

BOWMAN’S HILL WILDFLOWER PRESERVE

PROJECT # 00676-000-13-AS-2

1635 RIVER RD.

NEW HOPE, PA 18938

COMMONWEALTH OF PENNSYLVANIA

TOM WOLF, GOVERNOR

HARRISBURG, PENNSYLVANIA

PENNSYLVANIA HISTORICAL AND MUSEUM COMMISSION

ANDREW E. MASICH, CHAIRMAN

JAMES M. VAUGHAN, EXECUTIVE DIRECTOR

BUREAU OF HISTORIC SITES AND MUSEUMS

DIVISION OF ARCHITECTURE AND PRESERVATION

COMMONWEALTH KEYSTONE BUILDING, PLAZA LEVEL

400 NORTH STREET, HARRISBURG, PA 17120-0053

March 2014

Project Name: Pidcock Creek Dam Repairs

Project #: 00676-000-13-AS-2

TABLE OF CONTENTS

SECTION DESCRIPTION

01000 GENERAL REQUIREMENTS

01100 SPECIAL PROCEDURES

02270 STREAM IMPOUNDMENT AND EROSION CONTROL

02225 TRENCHING, BACKFILLING, AND COMPACTING

02300 POND DREDGING AND SITEWORK

02720 STORM DRAIN PIPE

02850 GABION BASKETS

03300 CAST-IN-PLACE CONCRETE

04400 STONEWORK

06200 CARPENTRY

07160 BITUMINOUS DAMPROOFING

SECTION 01000

GENERAL REQUIREMENTS

1.1 SCOPE OF THE WORK

A. Project includes minor masonry and concrete repairs to dam, sediment removal, walkway construction, removal of crib wall and installation of gabion baskets at creek edge.

as per the enclosed Drawings and Specification Sections.

B. Project Manager: Andrea Lowery, Phone Number: 717-787-6944, email: anlowery@pa.gov

C. Site Contact: Miles Arnott, Phone Number: 215-862-2924

D. Detailed requirements of the Work are described in Specification Sections which follow.

1.2 ISSUING OFFICE

A. Bids must be returned to the following address:

Pam Roche

Fiscal & Office Support Services

Bureau of Management Services

PA Historical & Museum Commission

State Museum of PA, 300 North Street, Room 529

Harrisburg, PA 17120-0024

717-772-8875 Telephone proche@pa.gov

1.3 INVITATION FOR BID (IFB) INFORMATION

A. Bids must be received at the Issuing Office listed in Section 1.2.A. Please note that the bidder assumes the responsibility to ensure that his/her bid reaches the Issuing Office by the date and time located on the invitation for bid form. The Pennsylvania Historical and Museum Commission (PHMC) will not be responsible for bids sent or delivered to the wrong office, even if it is another office of the PHMC. It is the responsibility of the bidder to call the issuing office to assure the bid has been received prior to the bid opening date and time.

B. Bids received after the date and time of the bid opening will be rejected, and will be returned to the bidder unopened, unless it is necessary to open the bid to determine a return address.

1.4 NON-MANDATORY PRE-BID MEETING

A. Date: Wed., April 8, 2015, 11 am

B. Location: Bowman’s Hill Wildflower Preserve Visitor Center, 1635 River Rd., New Hope, PA 18938

C. It is highly recommended that either you or a representative of your firm attend the pre-bid meeting to inspect the work areas and ask questions prior to submitting a bid. The pre-bid conference is for information only. Any answers furnished during the conference will not be official until they have been verified, in writing, by the Issuing Office. The pre-bid questions and answers will be posted to www.emarketplace.state.pa.us (click on “Solicitations”, enter Solicitation # “00676-000-13-AS-2”, mailto:proche@pa.gov http://www.emarketplace.state.pa.us/ click on “search”). If your company would like to visit the site to obtain further information (after the pre-bid meeting), call the site contact listed above for an appointment.

1.5 BID QUESTIONS

A. Technical or project work related questions will be received in writing by the Project Manager (PM).

Questions related to bidding or contracting procedures should be addressed to the Issuing Office. All questions must be received 10 calendar days prior to the bid due date and time. Answers to all questions and/or formal addendums will be posted to www.emarketplace.state.pa.us (click on “Solicitations”, enter

Solicitation # “00676-000-13-AS-2”, click on “search”) 7 calendar days prior to the bid due date and time. No other questions will be permitted after this date. All questions and answers will become an addendum to the IFB. The issuing office shall not be bound by any verbal information nor shall it be bound by any written information that is not either contained within the IFB or formally issued as an addendum by the issuing office.

B. If the Issuing Office deems it necessary to revise any part of this bid before the bid due date, revisions will be posted to www.emarketplace.state.pa.us (click on “Solicitations”, enter Solicitation # “00676-

000-13-AS-2”, click on “search”).It is the potential vendor’s responsibility to periodically check the website for any new or revised bid information or addenda prior to submission of the bid. If a bid bulletin has been issued, bidder must print the bulletin, sign and return the bulletin as part of the bid package.

C. Bid results will be posted to http://www.portal.state.pa.us/portal/server.pt/community/phmc_home/1426/bid_results/259905 within 24 hours of bid opening.

1.6 WORK IN AND AROUND HISTORIC BUILDINGS

A. Work is on a building and/or site of state or national historic significance. Take special care to avoid damage to any portion of the building, its contents, and its surrounding site.

B. Comply with the Secretary of the Interior's Standards for The Treatment of Historic Properties as applicable. (Please contact the Project Manager for a copy if you do not have one.)

C. Inform the Project Manager at least 48 hours prior to any excavation. The Project Manager, Site

Administrator, and/or the Commission Archaeologist must be present at the time of excavation to monitor for buried cultural deposits and shall have the right to stop the Work for a period of time, not to exceed 5 business days, to perform mitigation archaeology at no additional expense.

1.7 CONTRACTOR USE OF PREMISES/ACCESS/WORKING HOURS

A. Coordinate access to the site, delivery and storage of materials, parking and working hours with the

Project Manager.

B. Limit use of premises to allow normal operation of site and use of premises by public.

C. Complete all Work between the hours of 8:00 am - 4:00 pm, Monday through Friday.

D. Do not alter Work schedule without prior approval of the Project Manager and/or Site Administrator.

E. Use existing on-site roads for construction traffic.

F. Use on-site parking areas designated by the Site Administrator, for construction personnel.

G. Contractor will be on-site during all project work periods, including periods of all sub-contractor work, unless otherwise agreed upon by Project Manager.

1.8 PROTECTION OF THE ENVIRONMENT

http://www.portal.state.pa.us/portal/server.pt/community/phmc_home/1426/bid_results/259905

A. Provide for the prevention, control and abatement of land, water and air pollution in accordance with P.L.

No. 247, Act. No. 247, dated October 26, 1972 which shall include but not be limited to:

1. The prohibition of burning of all refuse.

2. The removal of all refuse from site of work for disposal in accordance with rules and regulations of authority having jurisdiction over the disposal area.

3. Providing for filtration of all contaminated water discharging directly into a stream.

4. Should asbestos material be encountered on the job, compliance with all statutes and regulations of the

Commonwealth of Pennsylvania and all rules and regulations of the United States Environmental

Protection Agency as they pertain to the emission of asbestos into the air during construction and demolition work and the disposal of material asbestos. Particular attention is drawn to Code of Federal

Regulations, Title 40, Part 61, Section 112 of Clean Air Act.

5. Full compliance with the regulations of OSHA as they pertain to the protection of workers exposed to the emission of asbestos fibers and lead and take all steps necessary to protect employees, as well as all other people engaged in the building, from exposure to lead and asbestos fibers resulting from the work.

6. Full compliance with any required permitting (including obtaining required permitting), as directed by the Bureau of Air Quality Control at the Department of Environmental Resources’ regional office whenever asbestos material or lead is to be removed or disposed.

1.9 GUARANTEE

A. Guarantee all materials, equipment and workmanship for a period of one year following the Final

Inspection. Within that period, correct all defects in the Work at no cost to the Commission.

1.10 PROJECT SIGN

A. Post no sign unless approved by Project Manager.

1.11 PERMITS, LICENSES AND CERTIFICATES

A. Secure all required approvals, permits, licenses or certificates. Provide one copy of each to the Project

Manager. NOTE: Because the work of this project is on Commonwealth-owned property, and as stipulated in Act 45 - the Uniform Construction Code (UCC), project reviews, building permits and certificates of occupancy will all be obtained only from the Pennsylvania Department of Labor and

Industry. Townships, Counties and/or local jurisdictions do not have the authority to review and issue these documents for this project. As a result of the project review process, and in conformance with Act 45, the PHMC will obtain the project building permit as required.

1.12 COORDINATION

A. Coordinate scheduling, submittals and Work of the drawings and specifications for efficient and orderly sequence of installation of all construction materials.

1.13 FIELD ENGINEERING

A. Locate and protect utilities. Utility locations shown on drawings are approximate. Verify locations before proceeding with the Work. Pursuant to the Pennsylvania One Call System, (811), call not less than three days prior to commencing excavation work.

B. Verify all dimensions and conditions in the field. No additional compensation will be provided for inaccuracies in the dimensions or conditions shown on the Drawings.

1.14 CUTTING AND PATCHING

A. Employ a skilled and experienced installer to perform all cutting and patching required to complete the

Work, including any removal of existing materials and equipment and installation of new Work, to the satisfaction of the Project Manager; restore Work with new materials to match that being cut.

B. Fit Work tight to adjacent materials. Maintain weather-tightness/integrity of existing conditions;

completely seal voids. Patch any fire wall penetrations with fire stop material to meet fire rating of wall being penetrated.

C. Refinish surfaces to match adjacent finishes.

D. Obtain prior acceptance by Project Manager for any extensive cutting.

1.15 CONFERENCES

A. Project Manager will schedule an Initial Job Conference after execution of the Contract and notice is provided to the Project Manager that the Contractor has obtained his/her performance bond and certificates of insurance, with all people involved (see 1.10 above and 1.37 below).

B. Project Manager will schedule progress meetings as required with all people involved.

C. Project Manager will schedule a Final Inspection Job Conference with all people involved.

1.16 SUBMITTAL PROCEDURES

A. At the Initial Job Conference, submit a complete list of major Products proposed for use. Identify the

Project, Contractor, Subcontractor or supplier, Products, models, options, other information and any references to the Drawings and Specifications. Sign to certify that you have reviewed and verified that the Products, field dimensions, adjacent construction Work, and coordination of information meet the requirements of the Work and the Drawings and Specifications.

B. Revise and resubmit submittals if required by Project Manager; note all changes made from previous submittal.

C. Submit three (3) copies to the Project Manager.

D. Submit samples as required to show function and appearance of the Product for acceptance by the Project

Manager.

E. Submit Requests for Information (RFI) to Project Manager to allow a 48 hour response time, unless otherwise modified by Project Manager. No RFI-subject work will be performed prior to a response from the Project Manager.

1.17 MANUFACTURERS' INSTRUCTIONS/CERTIFICATES

A. When listed in individual specification Sections, submit two copies of manufacturers' printed instructions for delivery, storage, assembly, installation, and finishing.

B. When listed in individual specification Sections, submit two copies of manufacturers' certificate to Project

Manager for review.

C. Show that Product meets or exceeds Specifications. Submit supporting reference information and certifications as appropriate.

1.18 PHOTOGRAPHS

A. CONSTRUCTION PHOTOGRAPHS

1. Photographs: Provide digital photographs, two color prints of each, matte finish, approx. 4” x 6” size, professionally printed on high quality photo paper.

2. Identify photographs with date, time, direction, and project name/number, on the back of each print.

3. Provide two digital disks, each containing all construction photographs. Use flash when appropriate.

Use appropriate lenses.

4. Submit the required number of photographs/ work day to document the following:

a. The existing conditions before Work begins. For exterior work, submit a minimum of one photograph of each elevation.

b. Items uncovered or exposed, particularly if they are unusual or of potential historical significance.

c. The progress of the project.

d. Mechanics performing the Work.

e. Items as they are being closed up.

f. The completed project. For exterior work, submit a minimum of one photograph of each elevation.

5. Place all prints in archival sleeves, comparable to "Vue-All Photo Saver", product number

6028(available at most photo stores). Place the dates on the sleeves with a permanent marker.

6. Submit a photo key for each set of photographs; the key should describe each view, the direction of the view, and the names of any individuals in the view.

7. Submit the two sets of photo prints, two copies of the photo key, and two digital disks of photographs to Project Manager upon completion of the project.

1.19 CONSTRUCTION DRAWINGS

A. Drawings: Provide Construction Drawings at Final Inspection, with any changes from the original

Drawings marked in red ink.

1.20 QUALITY ASSURANCE/CONTROL OF INSTALLATION

A. Monitor quality of Products, services, site conditions, and workmanship, to produce Work of specified quality.

B. Comply fully with manufacturers' instructions. If manufacturers' instructions do not agree with Drawings and Specifications, ask direction from Project Manager before proceeding.

C. Comply with specified standards as a minimum quality for the Work except when tolerances, codes, or

Specifications require higher standards or more quality workmanship.

D. Meet specified standard current as of Bid Opening date. Should specified standard conflict with

Drawings and Specifications, ask direction from Project Manager before proceeding.

E. Use only craftsmen who are highly skilled in their respective trade. Execute all work with the highest quality to meet or exceed the description and/or standard as specified for the Work. The Commission retains the right to remove from the project any employee of the contractor or subcontractor that does not show conformance to the standard of the Work.

1.21 TEMPORARY SANITARY FACILITIES

A. Existing site facilities may be used with the concurrence of the Site Administrator.

B. Maintain existing site facilities daily in clean and sanitary condition.

1.22 TEMPORARY SERVICES DURING CONSTRUCTION

A. Make temporary connections to existing service lines in locations as directed by the Project Manager for electric light and power, temporary heat, and water for construction.

B. Employ skilled craftspersons to repair any damage to historic building fabric.

C. Maintain all services to, through and within the occupied areas of the building at all times. Schedule at the convenience of the Commission, and obtain written approval by the Project Manager, for any required interruption ten (10) days prior to the interruption of any service.

1.23 PROTECTION

A. Erect barriers, barricades, signs, red plastic construction fencing and other protective devices as required to prevent unauthorized entry to construction areas and to protect existing facilities, historic building materials, Commission personnel, visiting public and adjacent properties from damage or injury.

B. Repair, at no cost to the Commission, any areas of existing buildings, contents, landscaping, paving or other site features damaged during the Work to the satisfaction of the Project Manager. This building contains important historical collections and/or finishes. If damage occurs to these collections and/or finishes as a result of the Work, hire a Conservator, from a list supplied by the Commission, to do an assessment of the damage and conservation measures required at no expense to the Commission. Upon acceptance by the Commission of the Conservator’s assessment report, arrange for the Conservator to perform those conservation measures on the damaged objects and/or finishes at no cost to the

Commission.

C. Use caution when working directly adjacent to and on existing structures, particularly those that are historic. Provide all necessary shoring, bracing and temporary support to ensure that all existing walls, roofs, floors, and miscellaneous features remain structurally sound and are neither damaged nor moved during the Work. Provide a plan for this work for acceptance by the Project Manager prior to proceeding.

D. Provide a UL listed fire extinguisher at the construction site during the Work, suitable for all types of fires.

1.24 PROGRESS CLEANING

A. Keep site clean and orderly, free of waste materials, construction-related debris, and rubbish. Provide thorough cleaning of the site daily.

B. Use of chute and dumpster is allowed. Location of dumpster or vehicles on site shall be determined by

Project Manager.

1.25 PRODUCTS

A. Products and Equipment: All materials and misc. equip. for a complete installation.

B. Do not use materials removed from site, except as specifically identified or allowed by the Drawings and

Specifications, or as directed by the Project Manager. Store any materials designated by the Project

Manager for salvage by the Commission at a location on site designated by the Site Administrator.

C. Use only those Products that meet Specified Standards or Description.

D. Submit a request for substitution for any manufacturer not named.

E. In all cases where a device or part of the Products or equipment is herein referred, it shall apply to as many such items as are required to complete the installation.

1.26 TRANSPORTATION, HANDLING, STORAGE AND PROTECTION

A. Transport, handle, store and protect Products in accordance with manufacturer's instructions.

B. Deliver products to the site in unbroken rolls, bundles, sealed containers or bags, fully identified with the manufacturer's name, brand, type and grade.

1.27 CONTRACT INVOICING AND CLOSEOUT PROCEDURES

A. Upon notification of award, submit a payment schedule to the project manager for approval. The payment schedule shall include a separate line item for each invoice you intend to submit. Line items shall be based on work tasks and not on the percentage of work completed.

B. Proper partial and final invoices will only be processed for completed work based on the approved payment schedule (line items), and the inspection and acceptance of the work by the Project Manager.

C. Submit all invoices to the “Bill To” address on your purchase order. Invoices must be invoiced by line item listed on the purchase order. Invoices must include the purchase order number. Failure to provide the purchase order number on your invoice will result in a delay of your payment.

D. Prior to submission of your final invoice, certify in writing that you have reviewed the drawings and

Specifications, inspected the wok, completed the work as specified and are ready for final inspection by the Project Manager.

E.. Final acceptance of the work may be subject to a final inspection by representatives of the Department of

General Services.

1.28 FINAL CLEANING

A. Do final cleaning prior to Final Inspection.

B. Clean debris from site.

C. Remove all Work-related waste, surplus and demolished materials, rubbish, and construction facilities from the site.

1.29 SPARE PARTS AND MAINTENANCE MATERIALS

A. Provide Products, spare parts and maintenance materials in quantities specified in individual Specification sections.

B. Deliver to Project site and place in location as directed by Project Manager; obtain receipt prior to final inspection.

1.30 EXPLANATION OF BASE BIDS

A. Base Bid #1 shall include all work as described in these specifications and shown on the drawings.

1.31 UNIT PRICES

A. Unit prices are not used.

1.32 TERM OF PURCHASE ORDER and PROJECT

A. The terms of the purchase order will commence on the Effective Date which is listed on the purchase order.

The contractor shall not start the performance of any work prior to the Effective Date of the purchase Order and the Commonwealth shall not be liable to pay the selected contractor for any service or work performed or expenses incurred before the Effective Date of the purchase order. The contract and project dates are listed in the purchase order text. The Commonwealth has the option to extend the contract and/or project periods in accordance with Commonwealth Terms and Conditions and PHMC Supplemental Terms and

Conditions. The Project Manager will determine if extensions are in the best interest of the

Commonwealth.

1.33 CONTRACTOR PERFORMANCE EVALUATION

A. An evaluation of the Contractor's project performance will be conducted by the Project Manager at the conclusion of the project. The evaluation will address Contractor's timeliness and quality of work, sensitivity to requirements of project and sensitivity to overall site operations.

B. The evaluation will be placed in the PHMC files for future reference relative to future project opportunities.

END OF SECTION

SECTION 01100

SPECIAL PROJECT PROCEDURES

GENERAL

1.01 DESCRIPTION

A. This section describes special project procedures required for the work at the existing buildings. Protective measures and other requirements described in this section are in addition to all protection and restoration procedures specified in individual specification sections.

B. Special project procedures work includes, but is not limited to, the following:

1. Fire protection

2. Protection of existing construction.

3. Protection and security of the environment.

PRODUCTS

Not Required

EXECUTION

3.01 FIRE PROTECTION:

A. Except where more stringent requirements are indicated in this section, all work shall be performed in accordance with NFPA 241, “ Safeguarding Building Construction and

Demolition Operations, 1989. “ B. Construction Processes and Hazards:

1. Smoking: Smoking shall be prohibited in the building at all times.

2. Trash Disposal: Combustible waste material and rubbish shall not be stored or allowed to accumulate within the building or in the immediate vicinity, but shall be removed from the premises as rapidly as practical.

3. Flammable Liquids: Do not store flammable liquids within the existing building.

4. Do not use open flame torches, heat plates, or heat guns.

5. Do not use any type of electrical hand tool which requires more than two amps of electricity without verifying the condition and capacity of the receptacle and circuit to handle such load.

C. Fire protection:

1. Access for fire fighting:

a. Access for use of heavy fire fighting equipment shall be provided to the immediate job site at the start of construction and maintained until all construction is completed.

b. During all construction operations, free access to permanent, temporary, and portable first aid fire equipment shall be maintained at all times.

2. First-aid Fire Equipment

a. At least two approved fire extinguishers shall also be provided in plain sight on each floor of each building at all times.

b. The suitability, distribution, and maintenance of extinguishers shall be in accordance with NFPA 10, but shall not be less than 20 lb. A-B-C type.

3.02 PROTECTION OF EXISTING CONSTRUCTION:

A. The contractor shall provide suitable and adequate protection for all parts of the existing structure and its contents where work under this contract is performed.

B. Protection of Historic Fabric - general:

1. Whether or not specified, use all measures required to protect interior and exterior historic finishes, materials, fixtures, and assemblies from damage resulting from the work of this contract. Provide all temporary protection and facilities required to ensure that no removed material falls against, abrades, mars, or otherwise damages historic surfaces not indicated to be removed.

2. During the course of the work, the project manager may require additional protective measures to ensure the safety of historic finishes from damage of all sorts.

3. Maintain protection until substantial completion.

3.03 PROTECTION OF THE ENVIRONMENT:

A. Access to the site is extremely limited, and provision for access to the site will be as directed by

Owner. Equipment shall use prescribed temporary roadways and shall not be allowed in areas other than designated construction areas and designated roadways. Unpaved areas which are altered or disturbed by equipment during the work shall be returned to pre-existing conditions at no additional cost to Owner.

B. Contractor shall protect root areas of trees from damage from operations and equipment.

Equipment to be operated in unpaved areas is limited in width to 48” and in width to 4250 lbs when loaded. The Contractor shall repair such damage at no cost to Owner. Provide fences or other barricades where necessary for such protection.

C. Root areas may be bridged with steel plates or polyethylene ground protection mats. Protective material shall be removed upon completion of work.

D. Strictly limit construction personnel to construction areas during the course of the work.

E. Any suspicious behavior on the part of any job-site personnel, including wandering through the building, any unusual inspection of windows, doors, security system, or any inspection of existing collections while either in existing presentation locations or in temporary storage, may be cause for immediate dismissal from the job site, at the sole discretion of the owner.

SECTION 02225

TRENCHING, BACKFILLING, AND COMPACTING

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Cutting paved surfaces B. Trench excavation C. Dewatering D. Backfilling trenches E. Compaction requirements F. Disposal of excavated material G. Restoration of surfaces

1.2 REFERENCE STANDARDS

A. Pennsylvania Department of Transportation:

1. Regulations Governing Occupancy of Highways by Utilities (67 PA Code, Chapter 459)

2. PennDOT Publication 408 Specifications

3. Pennsylvania Test Method, PTM 106 (Soil Moisture-Density)

4. Pennsylvania Test Method, PTM 112 (Soil-Cement Moisture-Density)

5. Pennsylvania Test Method, PTM 402 (Nuclear Density)

6. PennDOT Publication 213, Temporary Traffic Control Guidelines

7. PennDOT Publication 72, Standards for Roadway Construction

B. American Society for Testing and Materials (ASTM):

1. ASTM C33: Specifications for Concrete Aggregates

2. ASTM D698: Tests for Moisture-Density Relations of Soils and Soil-Aggregate Mixtures, using 5.5 lb (2.49 kg). Rammer and 12-inch (304.8 mm) drop

3. ASTM D2922: Test for Density of Soil and Soil Aggregate in Place by Nuclear Methods

1.3 SUBMITTALS

A. Submit certification attesting that the composition analysis of pipe bedding and select material stone backfill materials meets specification requirements.

B. Submit a list of all equipment to be used for compaction.

1.4 JOB CONDITIONS

A. Classification of Excavation:

All excavation Work performed under this contract is UNCLASSIFIED, and includes excavation and removal of all soil, shale, rock, boulders, fill, and all other materials encountered of whatever nature.

B. Protection of Existing Utilities and Structures:

1. Take all precautions and use all facilities required to protect existing utilities and structures.

In compliance with Act 287, as amended by Act 121 (2008), advise each Utility at least three (3) working days in advance of intent to excavate, do demolition work or use explosives and give the location of the job site. Request cooperative steps of the utility and suggestions for procedures to avoid damage to its lines.

2. Advise each person in physical control of powered equipment used in excavation or demolition work of the type and location of utility lines at the job site, the utility assistance to expect, and procedures to follow to prevent damage.

3. Immediately report to the utility and the ENGINEER any break, leak or other damage to the lines or protective coatings made or discovered during the Work and immediately alert the occupants of premises of any emergency created or discovered.

4. Allow free access to utility personnel at all times for purposes of maintenance, repair and inspection.

1.5 QUALITY ASSURANCE

A. Conduct testing of backfill at locations as authorized by ENGINEER.

B. Testing will be performed by an independent Testing Laboratory as indicated in Section 01400:

Quality Assurance.

PART 2 PRODUCTS

2.1 PIPE BEDDING MATERIAL

A. Thermoplastic Storm Sewer Pipe

1. Coarse Aggregate (No. 2A) stone, uncompacted, Table C, Section 703.2, Publication 408

Specifications. Do not use slag or cinders. Bedding depth in accordance with PennDOT

RC-30.

2.2 BACKFILL MATERIAL

A. Select Material Backfill for Thermoplastic Pipes

1. Coarse Aggregate (No. 2A) stone, Table C, Section 703.2, Publication 408 Specifications.

Do not use slag or cinders.

B. Suitable Backfill Material

1. Thermoplastic Storm Sewer Pipe

a. From top of pipe bedding material to top of pipe: Select Material Backfill.

b. From top of pipe to subgrade elevation: Material excavated from the trench containing no debris, organic matter, frozen material or stones with a diameter greater than one inch. Foreign material meeting same requirements may be used.

PART 3 EXECUTION

3.1 TRENCH EXCAVATION

A. Depth of Excavation:

1. Excavate trenches to the depth and grade indicated for the invert of the pipe plus that excavation necessary for placement of pipe bedding material.

2. Where rock is encountered in the trench bottom, remove the rock to the depths as shown on PennDOT RC-30 and backfill to the required pipeline grade with uncompacted bedding material as shown.

3. Where the CONTRACTOR, by error or intent, excavates beyond the minimum required depth, backfill the trench to the required pipeline grade with pipe bedding material, at no additional cost to the OWNER.

B. Width of Excavation:

1. Excavate trenches, including laterals, to a width necessary for placement and jointing of the pipe, and for placing and compacting pipe bedding and trench backfill around the pipe, but not less than sixteen inches (16") plus the pipe outside diameter.

2. Shape trench walls completely vertical from trench bottom to at least two feet (2') above the top of the pipe.

3.2 DEWATERING

A. Keep excavations dry and free of water. Dispose of precipitation and subsurface water clear of the

Work.

B. Intercept and divert surface drainage away from excavations.

C. Comply with Federal and State requirements for prevention of stream degradation, and erosion and sediment control.

3.3 BACKFILLING TRENCHES

A. After pipe installation and inspection, backfill trenches from trench bottom or from the top of pipe bedding material, whichever is greater, to the crown of the pipe with specified backfill material hand placed and carefully compacted with hand-operated mechanical tampers in layers not to exceed twelve inches to provide specific compaction around and under the haunches of the pipe. Backfill and compact the remainder of the trench with specified backfill material.

B. Lift Thickness Limitations:

1. Submit the recommendations of the equipment manufacturer as to the maximum lift thickness which can be placed, and the method of compaction to be used with the equipment to achieve the required compaction. In no case shall maximum lift thickness placed exceed the maximum limits specified by the manufacturers recommendations.

However, if the equipment manufacturer's lift thickness recommendation is followed and the specified compaction is not obtained, the CONTRACTOR shall, at his own expense, remove, replace, and retest as many times as is required to obtain the specified compaction.

C. Unsuitable Backfill Material:

1. Where the ENGINEER deems backfill material to be unsuitable and rejects all or part thereof due to conditions prevailing at the time of construction, remove the unsuitable materials and replace with suitable foreign backfill material.

3.4 COMPACTION REQUIREMENTS

A. If tests indicate Work does not meet the specified requirements, it shall be removed, replaced and retested until compliance is achieved at no additional cost to the OWNER.

B. Maintain optimum moisture content of backfill materials, within the range of two percentage points, plus or minus, to attain required compaction density.

C. Compact materials to the following percentages of maximum lab density as determined by ASTM

A698.

1. Pathways: 90%

2. Grassed Areas: 85%

3. Landscaped Areas: 80%

3.5 DISPOSAL OF EXCAVATED MATERIAL

A. Excavated material remaining after completion of backfilling shall remain the property of the

CONTRACTOR, shall be removed from the construction area, and shall be disposed of legally.

3.6 RESTORATION OF SURFACES

A. Restore all surfaces disturbed by construction to a condition equal to that which existed prior to construction. Access paths (existing rock-surfaced trails) may not be widened by the work. Existing wood plank edging shall remain (repair in kind if damaged). Contact Owner for source of wearing surface crushed stone to obtain exact match.

SECTION 02270

STREAM IMPOUNDMENT and EROSION CONTROL

PART 1 GENERAL

1.1 SCOPE

A. Section includes installing all erosion control measures in addition to installing stream impoundment structures.

1.2 RELATED SECTIONS

A. Section 02300, POND DREDGING and SITE WORK

1.3 PERMITS

A. Secure all required approvals, permits, licenses or certificates from appropriate Federal, Sate and

Municipal agencies. Provide one copy to the Project Manager prior to beginning the work.

B. By reference, the “Erosion and Sediment Pollution Control Program manual”’ by the Bureau of

Soils and Water Conservation, Department of Environmental Protection (PADEP), Commonwealth of Pennsylvania (Publication #466, dated 1/96) shall become part of the requirements of this specification.

1.4 PROTECTION

A. Protect from damage all adjacent materials, surfaces, and finishes before, during, and after the

Work. Restore all damaged materials, surfaces, and finishes to their previous level of appearance and operation to the satisfaction of the Project Manager or Site Maintenance Chief.

PART 2 PRODUCTS

2.1 MATERIALS

A. Silt fence, in accordance with the manufacturers literature. Silt fence geotextile shall be composed of strong, rot-proof fibers formed into a fabric of either the woven or non-woven type.

Posts shall be either wood, steel, or synthetic having a minimum length of 36 inches plus burial depth, as shown on the drawings.

B. Straw bales, in accordance with the standards and specifications presented on the Drawings and

Chapters 4 and 5 of the Pennsylvania Department of Environmental Protection’s “erosion and

Sediment Pollution Control Program Manual”. Posts shall be either wood, steel, or synthetic having a minimum length of 36 inches plus burial depth, as shown on the drawings.

C. Dams, sandbags enclosed by plastic sheeting shall be used in accordance with the Drawings to create dams to obstruct stream flow. Sandbags to be filleds with washed concrete sand and securely tied.\

D. Temporary Drainage Pipe shall be non-perforated high density polyethylene (HDPE) corrugated pipe.

2.2 MANUFACTURERS

A. Silt Fence: Amoco 2125 Silt Stop or approved equal.

2.3 SUBMITTALS

A. Manufacturers product data for all products shall be submitted for the approval of the

Commissions Project Manager.

PART 3 EXECUTION

3.1 EXAMINATION AND PREPARATION

A. Identify required lines, levels, contours, and datum.

B. The project site may contain underground archaeological resources. Inform the Project Manager at least 48 hours prior to any excavation. The Contractor shall allow an archaeological representative from the Commission to be present during all subsurface activities. During the work, if the Contractor encounters underground archaeological resources, he shall stop work in that area and allow the Commissions archaeological representative adequate time to conduct all necessary testing and mitigation archaeology at no additional expense. All timetables affected by the activities of the Commission’s archaeological representative shall be adjusted accordingly;

however, no price adjustments in the Contract will be considered for delays caused by the archaeological testing.

C. Locate and protect utilities. Verify locations before proceeding with the Work. Notify the

Pennsylvania One Call System, 1-(800) 242-1776.

D. Dams:

1. Dam shall be constructed of piled sandbags encased in plastic sheeting across the front end of the pond. The dam shall be constructed to prevent water from entering the main pond body during periods of excavation.

2. During the construction work, even if influent flow is not occurring from the stream to the pond, the upstream dam shall still be required.

3. Ponded water behind the upstream dam shall be removed and discharged into a temporary straw bale enclosure from which filtered water will flow into the creek downstream of the Concrete Spillway. Ponded water should not be allowed to exceed on half the height of the dam.

4. Inspect dam daily and repair or replace as necessary.

E. Silt Fence

1. Install silt fence as indicated on the Drawings.

2. A trench six inches in depth shall be excavated by hand. Post installation shall start at the center or low point (if applicable) with the remaining posts spaced a maximum of 6 feet apart. Posts shall be installed with at least eighteen inches in the ground. Geotextile shall be securely attached to the post by wire, cord, pockets, staples or other acceptable means.

The geotextile shall be installed in such a manner that eight inches of fabric is left at the bottom to be buried and a minimum overlap of eighteen inches is provided at all splice joints. The geotextile shall be installed in the trench such that six inches is against the side of the trench and two inches is across the bottom of the trench in the upstream direction. The trench shall be backfilled so that no flow can pass under the barrier.

Backfill soil should be properly compacted.

3. Inspect silt fence daily and repair as necessary. Remove accumulated sediments when deposits equal one half the above grade height of the silt fence. Remove all sediments from the site.

4. Maintain silt fence until project completion. Removal will be conducted by the

Commission following establishment of satisfactory vegetation in disturbed areas.

F. Straw Bales

1. Install straw bales as indicated on the Drawings.

2. Install straw bales end to end in a 4-inch deep trench and anchor in place with 36-inch posts. Install posts with at least eighteen inches in the ground. Properly compact backfill soil.

3. Inspect silt fence daily and repair as necessary. Remove accumulated sediments when deposits equal one-third the above grade height of the straw bale. Remove all sediments from the site.

G. Topsoil, Grading, Seeding

1. See Section 02300 for instructions.

3.1 CLEAN UP

A. Remove all debris from site.

SECTION 02300

POND DREDGING and SITE WORK

PART 4 GENERAL

4.1 SUMMARY

A. Section includes dredging the pond and installation of topsoil, grading, seeding, fertilizer, and mulching.

4.2 RELATED SECTIONS

A. Section 02270, “Stream Impoundment/ Pond Drainage and Soil Erosion/Sediment Control Measures”.

4.3 SUBMITTALS

A. Topsoil: Submit sample of topsoil to testing laboratory, in airtight containers. Sampling and testing of topsoil shall be in accordance with standard practices of soil testing as established by the United States Department of Agriculture or other recognized agency. Soil analysis test may be made in either a Government or an approved commercial soil-testing laboratory and shall be at the contractor’s expense. The contractor shall submit test reports in duplicate to PHMC Division of Architecture and Preservation prior to soil delivery and installation.

B. Grass Seed: Submit product information on grass seed mix meeting requirements noted below.

4.4 PERMITS

A. Secure all required approvals, permits, licenses or certificates from appropriate Federal, Sate and

Municipal agencies. Provide one copy to the Project Manager prior to beginning the work.

PART 5 PRODUCTS

5.1 SOIL MATERIALS

A. New Topsoil

1) Any new or added Topsoil shall be natural friable clay loam soil possessing the characteristics of representative soils in the vicinity which produce heavy growth of crops, grass, and other vegetation and shall be obtained from naturally well-drained areas. Topsoil shall be without admixture of subsoil, refuse, or any foreign material, reasonably free from hard dirt, brush, weeds, or clods and from clay lumps, stumps, roots, stones larger than 2 inch diameter, or toxic substances and any other materials or substances which may be harmful to plant growth or be a hindrance to planting and maintenance operations. PH shall be between 5 and 7.

B. Grass Seed

1. Grass Seed Mixture

a) Perennial Ryegrass 20%

b) Kentucky Bluegrass 50%

c) Fine Fescue 30%

d) Note: The project manager must approve the exact seed mix prior to application.

2. Contractor will provide grass seed bag tag to agency upon delivery of material to site.

The tag should contain the following information;

a) Name and address of manufacturer

b) Lot number

c) Turf grass type and mix ratio

d) Percentage by weight of pure seed of each species and variety

e) Germination percentage

f) Percentage by weight of weed seed

g) Percentage by weight of inert matter. Date on which the germination test was conducted

3. Straw Mulch: Mulch shall be clean straw, mulch free from weed seeds and other debris.

4. Turf grass Starter Fertilizer: 10-5-5 analysis

PART 6 EXECUTION

6.1 EXAMINATION AND PREPARATION

A. Identify required lines, levels, contours, and datum.

B. The project site may contain underground archaeological resources. Inform the Project Manager at least 48 hours prior to any excavation. The Contractor shall allow an archaeological representative from the Commission to be present during all subsurface activities. During the work, if the Contractor encounters underground archaeological resources, he shall stop work in that area and allow the Commissions archaeological representative adequate time to conduct all necessary testing and mitigation archaeology at no additional expense. All timetables affected by the activities of the Commission’s archaeological representative shall be adjusted accordingly;

however, no price adjustments in the Contract will be considered for delays caused by the archaeological testing.

C. Locate and protect utilities. Verify locations before proceeding with the Work. Notify the

Pennsylvania One Call System, 1-(800) 242-1776.

6.2 PROTECTION OF ADJACENT WORK

A. Underpin adjacent structures, which may be damaged by excavation work, including pond bulkhead wall, concrete spillway, inlet structures, retaining walls and service utilities.

B. Grade excavation top perimeter to prevent surface water run-off into excavation or to adjacent properties.

6.3 POND DRAINAGE/STREAM IMPOUNDMENT

A. See Section 02270 for stream impoundment and pond drainage instructions.

6.4 POND DREDGING/EXCAVATING

A. Install all Sedimentation Control and Siltation Control Materials – as indicated on the drawings and in Section 02270.

B. Mechanically remove sedimentation and deposited soils from the bottom of the pond using a

Track-Hoe, Bobcat, Back-Hoe or similar equipment.

C. To prevent root compaction, any equipment used shall not be operated within the drip-line of any trees.

D. Final grade of pond floor shall be point at which Contractor encounters “hardpan” substrate.

Minimum depth of finished pond shall be 6 feet in depth.

E. All excavated materials to be removed from site.

F. When excavation/dredging is complete, Contractor shall notify the Project Manager or Site

Maintenance Chief for an inspection and to receive notice to proceed with dismantling stream impoundment measures.

6.5 PLACING TOPSOIL

A. Place new topsoil in areas where equipment or dredging procedure has damaged turf grass.

B. Spread soil. Remove all debris, including large stones, by raking.

C. Apply the topsoil in 6” lifts lightly compacting the layers prior to adding new soil.

D. Rake areas to finish grade prior to seeding. Light rolling will indicate any low spots or other irregularities.

E. Prior to seeding, broadcast and work into topsoil 10-5-5 fertilizer @ 40lbs per 1,000 square feet.

F. Broadcast grass seed mix by hand or with mechanical spreader @ 4 pounds per 1,000 square feet.

G. Mulching - Cover all seeded areas with clean straw mulch.

3.2 CLEAN UP

A. Remove all debris and excavated material from site.

B. Maintain all sedimentation and erosion control barriers throughout the course of the project.

C. Restore all adjacent areas affected by the work to their appearance before the project.

SECTION 02720

STORM DRAIN PIPE

1.1 SECTION INCLUDES:

A. Preparation

B. Laying Pipe in Trenches

C. Backfilling Trenches

1.2 QUALITY ASSURANCE

A. Reference Standards:

1. Pennsylvania Department of Transportation: Publication 408, Specifications

1.3 SUBMITTALS

A. Section 01300 - Submittals: Procedures for submittals.

B. Certificates: Submit manufacturer's certification attesting that the pipe, fittings and joints meet or exceed specification requirements.

C. Provide manufacturer's installation instructions for any special procedures.

1.4 PRODUCT DELIVERY, STORAGE, AND HANDLING

A. During loading, transporting and unloading, exercise care to prevent damage to materials.

B. Do not drop pipe or fittings.

2.1 POLYVINYL CHLORIDE (PVC) PIPE

A. Publication 408, Section 601.2(a)6.a.2 or 6.c.2.

3.1 PREPARATION

A. Perform trench excavation to the line and grade indicated.

B. Provide pipe bedding as specified in Section 02225 for each type of pipe used. Place aggregate in a manner to avoid segregation, and compact to the maximum practical density so that the pipe can be laid to the required tolerances.

3.2 LAYING PIPE IN TRENCHES

A. Give ample notice to the ENGINEER in advance of pipe laying operations.

B. Lower pipe into trench using appropriate handling equipment. Do not drop pipe.

C. Lay pipe proceeding downgrade with the bell or groove pointing upstream.

D. Lay pipe to a true uniform line with the barrel of the pipe resting solidly in bedding material throughout its length. Excavate recesses in bedding material to accommodate joints, fittings, and appurtenances.

E. Lay each section of pipe to form a close concentric joint with the adjoining section and to avoid offsets in the flow line.

F. Clean and inspect each pipe and fitting before joining. Align pipe with previously laid sections.

Assemble to provide tight joints. Assemble joints in accordance with the pipe manufacturer's instructions.

G. Check each pipe installed as to line and grade in place. Correct deviation from line and grade immediately. Deviation from the designed grade or deflection of pipe joints, will be causes for rejection.

H. Place and compact sufficient backfill to hold each section of pipe firmly in place as the pipe is laid.

3.3 BACKFILLING TRENCHES

A. Backfill pipeline trenches only after examination of pipelaying by the ENGINEER.

B. Backfill and compact trenches as specified in Section 02225.

SECTION 02850

GABION BASKETS

PART 1 - GENERAL

A. Assembly

B. Installation

C. Filling

D. Internal Connecting Wires

E. Filling Baskets

F. Lid Closing

G. Mesh Cutting and Folding

1.2 QUALITY ASSURANCE

A. Reference Standards:

1. ASTM A313/A313M

2. ASTM A370

3. ASTM A641/A641M

4. ASTM A764

5. ATM A975

1.3 SUBMITTALS

A. Section 01300 – Submittals: Procedures for submittals.

B. Certificates: Submit manufacturer’s certification attesting that the mesh, wire, stiffeners and fasteners meet or exceed specification requirements.

C. Provide manufacturer’s installation instructions for any special procedures.

1.4 PRODUCT DELIVERY, STORAGE, AND HANDLING

A. During loading, transporting and unloading, exercise care to prevent damage to materials.

B. Do not store in wet areas.

PART 2 - PRODUCTS

2.1 WOVEN MESH

A. All tests on the wire must be performed prior to manufacturing the mesh.

1. Tensile strength: Both the wire used for the manufacture of gabions and the lacing wire shall have a minimum tensile strength of 75,000 psi (515 MPa), in accordance with ASTM A641/A641M.

2. Elongation: The test must be carried out on a sample at least 12 in. (30 cm) long.

Elongation shall not be less than 12%, in accordance with ASTM A370.

3. Zinc coating: According to ASTM A641/A641M, Class III soft temper coating.

4. Adhesion of zinc coating: The adhesion of the zinc coating to the wire shall be such that, when the wire is wrapped six turns around a mandrel having four times the diameter of the wire, it does not flake or crack when rubbing it with the bare fingers, in accordance with ASTM A641/A641M.

B. Galvanized (zinc coated) woven wire mesh gabions (8 x 10 mesh type):

1. Wire mesh: Diameter – 0.120 in. (3.05 mm)

2. Selvedge wire: Diameter – 0.153 in. (3.90 mm)

3. Mesh opening: Nominal Dimension D = 3.25 in. (83 mm)

C. Steel Mesh Properties

1. Mesh Tensile Strength: Mesh shall have a minimum strength of 3500 lb/ft (51.1 kN/m) when tested in accordance with ASTM A975 section 13.1.1.

2. Punch Test Resistance: Mesh shall have a minimum resistance of 6000 lb (26.7 kN) when tested in accordance with ASTM A975 section 13.1.4.

3. Connection to selvedges: Connections shall have a minimum resistance of 1400 lb/ft (20.4 kN/m) when tested in accordance with ASTM A975.

2.2 GALVANIZED (ZINC COATED) LACING WIRE AND INTERNAL STIFFENERS

A. Lacing wire: Diameter – 0.087 in. (2.20 mm)

B. Cross tie/stiffener wire: Diameter – 0.087 in. (2.20 mm)

C. Preformed Stiffener: Diameter – 0.153 in. (3.9 mm) internal.

2.3 OVERLAPPING FASTENERS

A. Overlapping fasteners may be used in lieu of, or to complement, lacing wire for basket assembly and installation.

1. High tensile…