S01_Attachment B - Conneautville Final Design Technical Specs.pdf

TECHNICAL SPECIFICATIONS

FINAL DESIGN SUBMISSION

Conneautville Dam NRCS Task Order AG-SPEC-D-16-0006 Conneautville, Pennsylvania

Schnabel Reference 15715008.00 June 9, 2020

Prepared For:

U.S. Department of Agriculture – Natural Resources Conservation Service

Revised March 15, 2024

TECHNICAL SPECIFICATIONS

FINAL DESIGN SUBMISSION

Conneautville Dam NRCS Task Order AG-SPEC-D-16-0006 Conneautville, Pennsylvania

Schnabel Reference 15715008.00 June 9, 2020

Prepared For:

U.S. Department of Agriculture – Natural Resources Conservation Service

Jeremy R. Young, PE PA Professional Engineer PE073291

GSFW Engineering JV 3 Dickinson Drive, Suite 200, Chadds Ford, PA 19317 Phone (610) 696-6066; Fax (610) 696-7771

PA NRCS

Conneautville Dam – Technical Specifications

June 9, 2020 Page i GSFW Engineering JV Project 15715008.00 ©2020 All Rights Reserved

TECHNICAL SPECIFICATIONS

FINAL DESIGN SUBMISSION

CONNEAUTVILLE DAM

PA NRCS

CONNEAUTVILLE, PENNSYLVANIA

TABLE OF CONTENTS

SECTION TITLE PAGE NO.

CONSTRUCTION SPECIFICATIONS (CS)

Site Preparation CS 1 Clearing 1-1 1-3 CS 2 Clearing and Grubbing 2-1 2-3 CS 3 Structure Removal 3-1 3-3 CS 5 Pollution Control 5-1 5-6 CS 6 Seeding, Sprigging, and Mulching 6-1 6-5 CS 7 Construction Surveys 7-1 7-6 CS 8 Mobilization and Demobilization 8-1 8-2

Foundation Work CS 11 Removal of Water 11-1 11-5 CS 13 Piling 13-1 13-6

Earthwork CS 21 Excavation 21-1 21-5 CS 23 Earthfill 23-1 23-7 CS 24 Drainfill 24-1 24-6 CS 26 Topsoiling 26-1 26-4 CS 28 Lime-Treated Earthfill 28-1 28-7

Nonmetal Pipe Conduits and Drains CS 45 Plastic Pipe 45-1 45-8

Riprap and Slope Protection CS 61 Rock Riprap 61-1 61-4

Miscellaneous Structural Work CS 81 Metal Fabrication and Installation 81-1 81-3 CS 94 Contractor Quality Control 94-1 94-4 CS 95 Geotextile 95-1 95-4

Miscellaneous Construction CS 96 Field Office 96-1 96-5

PA NRCS

Conneautville Dam – Technical Specifications

June 9, 2020 Page ii GSFW Engineering JV Project 15715008.00 ©2020 All Rights Reserved

MATERIAL SPECIFICATIONS (MS)

Foundation Materials MS 511 Steel Piles 511-1 511-1

Aggregates and Rock

MS 521 Aggregates for Drainfill and Filters 521-1 521-1 MS 523 Rock for Riprap 523-1 523-3

Nonmetal Pipe and Fittings

MS 547 Plastic Pipe 547-1 547-3

Miscellaneous Structural Materials

MS 581 Metal 581-1 581-1

Miscellaneous Construction Materials

MS 592 Geotextile 592-1 592-3 MS 593 Lime 593-1 593-1

Revision Notes

Detail Design Submission (Revision 1), dated February 28, 2018, incorporated review comments from PA NRCS and NRCS NDSCMC (Ft. Worth) and were accepted by NRCS and PADEP for permitting. This Final Design Submission was compiled after all permits and approvals were obtained in May 2020. No changes have been made to the February 28, 2018, specifications, except for minor edits to the cover and table of contents.

1-1 (210-VI-NEH, May 2001) NRCS – February 28, 2018 PA-RCD-112 – Conneautville Dam

Construction Specification 1—Clearing

1. Scope The work shall consist of the clearing and disposal of trees, snags, logs, brush, shrubs, stumps, and rubbish from the designated areas.

2. Classification Unless otherwise specified in section 8, clearing will be classified according to the following definitions:

Class A—Requires that trees and other woody vegetation be removed so that the remaining stumps extend no higher than 4 inches above the ground surface.

Class B—Requires that trees and other woody vegetation be removed so that the remaining stumps extend no higher than 12 inches above the ground surface.

Class C—Requires that trees and other woody vegetation be removed as near the ground surface as conventional tools or field conditions will permit or as specified in section 8.

3. Protection of existing vegetation Trees and other woody vegetation designated to remain undisturbed shall be protected from damage throughout the entire construction period. Any damage resulting from the contractor's operations or neglect shall be repaired by the contractor.

Earthfill, stockpiling of materials, vehicular parking, and excessive foot or vehicular traffic shall not be allowed within the dripline of vegetation designated to remain in place. Vegetation damaged by any of these or similar actions shall be replaced with viable vegetation of the same species or as specified in section 8 and approved by the contracting officer.

Any cuts, skins, scrapes, or bruises to the bark of the vegetation shall be carefully trimmed and local nursery accepted procedures used to seal damaged bark.

Any limbs or branches 0.5-inch or larger in diameter that are broken, severed, or otherwise seriously damaged during construction shall be cut off at the base of the damaged limb or branch flush with the adjacent limb or tree trunk.

All roots 1 inch or larger in diameter that are cut, broken, or otherwise severed during construction operations shall have the end smoothly cut perpendicular to the root. Roots exposed during excavation or other operations shall be covered with moist earth and/or backfilled as soon as possible to prevent them from drying.

4. Marking The limits of the areas to be cleared will be marked by stakes, flags, tree markings, or other suitable methods. Trees to be left standing and uninjured will be designated by special markings placed on the trunks at a height of about 6 feet above the ground surface.

1-2 (210-VI-NEH, May 2001) NRCS – February 28, 2018

5. Clearing All trees not marked for preservation and all snags, logs, brush, shrubs, stumps, rubbish, and similar materials shall be cleared from within the limits of the marked areas.

6. Disposal All materials cleared from the designated areas shall be disposed of at locations shown on the drawings or in a manner specified in section 8. The contractor is responsible for complying with all local rules and regulations and the payment of any and all fees that may result from the disposal at locations away from the construction location.

7. Measurement and payment Method 1—For items of work for which specific unit prices are established in the contract, the cleared area is measured to the nearest 0.1 acre. Payment for clearing is made for the total area within the designated limits at the contract unit price for the specified class of clearing. Such payment will constitute full compensation for all labor, equipment, tools, and all other items necessary and incidental to the completion of the work.

Method 2—For items of work for which specific unit prices are established in the contract, the length of the cleared area is measured to the nearest full station (100 feet) along the line designated on the drawings or in the specifications. Payment for clearing is made for the total length within the designated limits at the contract unit price for the specified class of clearing.

Such payment will constitute full compensation for all labor, equipment, tools, and all other items necessary and incidental to the completion of the work.

Method 3—For items of work for which specific unit prices are established in the contract, the cleared areas is measured within the specified limits to the nearest 0.1 acre. The cleared areas are determined by measuring the width cleared, within the specified limits, at representative sections and multiplying the average width between sections by the linear distance between sections.

Payment for clearing is made at the contract unit price for the item and shall constitute full compensation for all labor, equipment, tools, and all other items necessary and incidental to the completion of the work.

Method 4—For items of work for which specific lump sum prices are established in the contract, payment for clearing is made at the contract lump sum prices. Such payment shall constitute full compensation for all labor, equipment, tools, and all other items necessary and incidental to the completion of the work.

All Methods—These provisions apply to all methods of measurement and payment.

Compensation for any item of work described in the contract, but not listed in the bid schedule is included in the payment for the item of work to which it is made subsidiary. Such items and the items to which they are made subsidiary are identified in section 8.

1-3 (210-VI-NEH, May 2001) NRCS – February 28, 2018

8. Items of work and construction details

Items of work to be performed in conformance with this specification and construction details are:

a. Bid Item 1 – Clearing

(1) This item shall consist of the clearing and disposal of trees, snags, logs, brush, shrubs, stumps, and rubbish from the designated areas as specified herein.

(2) In Section 2 – Classification, clearing shall meet the requirements of Class C.

(3) In Section 4 – Marking, limits of clearing shall be marked by the Contractor.

(4) In Section 5 – Clearing, limits of clearing are shown on the Drawings.

(5) In Section 6 – Disposal, all materials resulting from clearing shall become property of the Contractor and shall be removed from the site and disposed of in accordance with all applicable federal, state, and local regulations. Burning shall not be allowed on site.

(6) In Section 7 – Measurement and Payment, Method 1 (horizontal measurement) will apply.

2-1 (210-VI-NEH, May 2001) NRCS – February 28, 2018

Construction Specification 2—Clearing and Grubbing

The work consists of clearing and grubbing and disposal of trees, snags, logs, brush, stumps, shrubs, and rubbish from the designated areas.

2. Protection of existing vegetation Trees and other vegetation designated to remain undisturbed shall be protected from damage throughout the duration of the construction period. Any damages resulting from the contractor's operations or neglect shall be repaired by the contractor.

Earthfill, stockpiling of materials, vehicular parking, and excessive foot or vehicular traffic shall not be allowed within the drip line of vegetation designated to remain in place. Vegetation damaged by any of these or similar actions shall be replaced with viable vegetation of the same species, similar condition, and like size unless otherwise approved by the contracting officer.

Any cuts, skins, scrapes, or bruises to the bark of the vegetation shall be carefully trimmed and local nursery accepted procedures used to seal damaged bark.

Any limbs or branches 0.5 inch or larger in diameter that are broken, severed, or otherwise seriously damaged during construction shall be cut off at the base of the damaged limb or branch flush with the adjacent limb or tree trunk. All roots 1-inch or larger in diameter that are cut, broken, or otherwise severed during construction operations shall have the end smoothly cut perpendicular to the root. Roots exposed during excavation or other operations shall be covered with moist earth or backfilled as soon as possible to prevent the roots from drying out.

3. Marking The limits of the area(s) to be cleared and grubbed will be marked by stakes, flags, tree markings, or other suitable methods. Trees to be left standing and uninjured will be designated by special markings placed on the trunk about 6 feet above the ground surface.

4. Clearing and grubbing All trees not marked for preservation and all snags, logs, brush, stumps, shrubs, rubbish, and similar materials shall be cleared from within the limits of the designated areas. Unless otherwise specified, all stumps, roots, and root clusters that have a diameter of 1 inch or larger shall be grubbed out to a depth of at least 2 feet below subgrade for concrete structures and 1 foot below the ground surface at embankment sites and other designated areas.

5. Disposal All materials cleared and grubbed from the designated areas shall be disposed of at locations shown on the drawings or in a manner specified in section 7. The contractor is responsible for complying with all local rules and regulations and the payment of any and all fees that may result from disposal at locations away from the project site.

6. Measurement and payment Method 1—For items of work for which specific units prices are established in the contract, the cleared and grubbed area is measured to the nearest 0.1 acre. Payment for clearing and grubbing is made for the total area within the designated limits at the contract unit price. Such payment will

2-2 (210-VI-NEH, May 2001) NRCS – February 28, 2018 constitute full compensation for all labor, equipment, tools, and all other items necessary and incidental to the completion of the work.

Method 2—For items of work for which specific unit prices are established in the contract, the length of the cleared and grubbed area is measured to the nearest full station (100 feet) along the line designated on the drawing or identified in the specifications. Payment for clearing and grubbing is made for the total length within the designated limits at the contract unit price. Such payment will constitute full compensation for all labor, equipment, tools, and all other items necessary and incidental to the completion of the work.

Method 3—For items of work for which specific unit prices are established in the contract, each tree, stump, and snag having a diameter of 4 inches or larger and each log having a diameter of 4 inches or larger and a length of 10 feet are measured before removal. The size of each tree and snag is determined by measuring its trunk at breast height above the natural ground surface. The size of each log is determined by measuring the butt and by measuring its length from butt to tip.

The size of each stump is measured at the top. Diameter is determined by dividing the measured circumference by 3.14.

Payment for clearing and grubbing of each tree, stump, and snag having a diameter of 4 inches or larger and each log having a diameter of 4 inches or larger and a length of 10 feet or larger is made at the contract unit price for its size designation as determined by the following schedule:

Measured diameter Size designation

(in) (in)

4 to 8 6 8 to 12 10 12 to 24 18 24 to 36 30 36 to 60 48 Over 60 60

The sum of such payments shall constitute full compensation for clearing and grubbing (including the clearing and grubbing of smaller trees, stumps, snags, logs, brush, shrubs, and roots), applicable permits and associated fees, and rubbish removal. Such payment shall constitute full compensation for all labor, equipment, tools, and all other items necessary and incidental to the completion of the work.

Method 4—For items of work for which specific lump sum prices are established in the contract, payment for clearing and grubbing is made at the contract lump sum price. Such payment shall constitute full compensation for all labor, equipment, tools, and all other items necessary and incidental to the completion of the work.

All Methods—The following provisions apply to all methods of measurement and payment.

Compensation for any item of work described in the contract, but not listed in the bid schedule will be included in the payment for the item of work to which it is made subsidiary. Such items and the items to which they are made subsidiary are identified in section 7.

2-3 (210-VI-NEH, May 2001) NRCS – February 28, 2018

7. Items of work and construction details

Items of work to be performed in conformance with this specification and construction details are:

a. Bid Item 2 – Clearing and Grubbing

(1) This item consists of clearing and grubbing and disposal of trees, snags, logs, brush, stumps, shrubs, and rubbish from the designated areas as specified herein.

(2) In Section 3 – Marking, limits of clearing and grubbing shall be marked by the

Contractor.

(3) In Section 4 – Clearing and Grubbing, limits of clearing and grubbing are shown on the Drawings.

(4) In Section 5 – Disposal, all materials resulting from clearing and grubbing shall become property of the Contractor, and shall be removed from the site and disposed of in accordance with all applicable federal, state, and local regulations. Burning shall not be allowed on site.

(5) In Section 6 – Measurement and Payment, Method 1 (horizontal measurement) will

3-1 (210-VI-NEH, May 2001) NRCS – February 28, 2018

Construction Specification 3—Structure Removal

The work shall consist of the removal, salvage, and disposal of structures (including fences) from the designated areas.

2. Marking Method 1—Each structure or structure part to be removed will be marked with stakes, flags, paint, or other suitable method.

Method 2—The area boundaries from which structures must be removed will be marked using stakes, flags, paint, or other suitable method. Structures to remain undisturbed or to be salvaged will be designated by special markings.

3. Removal Method 1—All structures designated for removal in the contract shall be removed to the specified extent and depth.

Method 2—Within the areas so marked, all visible and buried structures identified shall be removed to the specified extent and depth.

4. Salvage Structures or structure parts that are designated to be salvaged shall be carefully removed and neatly placed in the specified or approved storage location. Salvaged structures that are capable of being disassembled shall be dismantled into individual members or sections. Such structures shall be neatly and systematically match marked with paint before disassembly. All connectors and other parts shall be marked to indicate their proper location within the structure and shall be fastened to the appropriate structural member or packed in suitable containers.

Material from fences designated to be salvaged shall be placed outside the work area on the property on which the fence was originally located. Fence wire shall be rolled into uniform rolls of suitable size and neatly piled with other salvaged materials. Posts and rails shall be neatly stacked.

5. Disposal of refuse materials Refuse materials resulting from structure removal shall be disposed of in a manner and at locations specified in section 7 of this specification or in an acceptable manner and at locations approved by the contracting officer. Disposal by burning shall be in accordance with local rules and regulations.

6. Measurement and payment Method 1—For items of work for which specific unit prices are established by the contract, payment for the removal of each structure unit, except fences, is made at the contract unit price.

Fences removed or removed and salvaged are measured to the nearest linear foot. Payment for fence removal or removal and salvage is made at the contract unit prices for each type and size of fence.

3-2 (210-VI-NEH, May 2001) NRCS – February 28, 2018

Such payment will constitute full compensation for all labor, equipment, tools, applicable permits and associated fees for burning and disposal of refuse, and all other items necessary and incidental to the completion of the work.

Method 2—For items of work for which specific lump sum prices are established by the contract, payment for structure removal is made at the contract lump sum price.

Such payment will constitute full compensation for all labor, equipment, tools, applicable permits and associated fees for burning and disposal of refuse, and all other items necessary and incidental to the completion of the work.

All Methods—The following provisions apply to all methods of measurement and payment.

Compensation for any item of work described in the contract, but not listed as a contract line item number in the bid schedule, is included in the payment for the item of work to which it is made subsidiary. Such items and items to which they are made subsidiary are identified in section 7 of this specification.

3-3 (210-VI-NEH, May 2001) NRCS – February 28, 2018

7. Items of work and construction details

Items of work to be performed in conformance with this specification and construction details

a. Bid Item 3 – Structure Removal

(1) This item shall consist of the removal, salvage, and disposal of structures (including the existing trash rack, drain pipes at the principal spillway impact basin and fences) from the designated areas as specified herein.

(2) In Section 2 – Marking, Method 1 will apply. The Contractor shall be responsible for marking.

(3) Section 3 – Removal, Method 1 will apply. Structures designated for removal are shown on the Drawings.

(4) In Section 4 – Salvage, no structures are designated to be salvaged.

(5) In Section 5 – Disposal of Refuse Materials, refuse materials resulting from structural removal shall become property of the Contractor, and shall be removed from the site and disposed of in accordance with all applicable federal, state, and local regulations.

Burning and blasting shall not be allowed on site.

(6) In Section 6 – Measurement and Payment, Method 2 will apply.

5-1 (210-VI-NEH, January 2014) NRCS – February 28, 2018

Construction Specification 5—Pollution Control

1. Scope The work consists of installing measures or performing work to control erosion and minimize the production of sediment and other pollutants to water and air from construction activities.

The following BioPreferred® product categories are applicable to this specification: — mulch and compost materials

• erosion control materials

• fertilizers

• dust suppressants

• agricultural spray adjuvants

2. Material Silt fence shall conform to the requirement of Materials Specification 592, Geotextile. All other material furnished shall meet the requirements of the material specifications listed in section 8 of this specification.

3. Erosion and sediment control measures and works The measures and works shall include, but are not limited to, the following:

Staging of earthwork activities—The excavation and moving of soil materials shall be scheduled to minimize the size of areas disturbed and unprotected from erosion for the shortest reasonable time.

Seeding—Seeding to protect disturbed areas shall occur as soon as reasonably possible following completion of that earthwork activity.

Mulching—Mulching to provide temporary protection of the soil surface from erosion.

Diversions—Diversions to divert water from work areas and to collect water from work areas for treatment and safe disposition. They are temporary and shall be removed and the area restored to its near original condition when the diversions are no longer required or when permanent measures are installed.

Stream crossings—Culverts or bridges where equipment must cross streams. They are temporary and shall be removed and the area restored to its near original condition when the crossings are no longer required or when permanent measures are installed.

Sediment basins—Sediment basins collect, settle, and eliminate sediment from eroding areas from impacting properties and streams below the construction site(s). These basins are temporary and shall be removed and the area restored to its original condition when they are no longer required or when permanent measures are installed.

Sediment filters—Straw bale filters or geotextile silt fences trap sediment from areas of limited runoff. Sediment filters shall be properly anchored to prevent erosion under or around them. Silt fences shall be installed and maintained in accordance with ASTM D6462. These filters are temporary and shall be removed and the area restored to its original condition when they are no longer required or when permanent measures are installed.

5–2 (210-VI-NEH, January 2014) NRCS – February 28, 2018

Waterways—Waterways for the safe disposal of runoff from fields, diversions, and other structures or measures. These works are temporary and shall be removed and the area restored to its original condition when they are no longer required or when permanent measures are installed.

Other—Additional protection measures as specified in section 8 of this specification or required by Federal, State, or local government.

4. Chemical pollution The contractor shall provide watertight tanks or barrels or construct a sump sealed with plastic sheets to collect and temporarily contain chemical pollutants, such as drained lubricating or transmission fluids, grease, soaps, concrete mixer washwater, or asphalt, produced as a by-product of the construction activities. Pollutants shall be disposed of in accordance with appropriate state and Federal regulations. At the completion of the construction work, tanks, barrels, and sumps shall be removed and the area restored to its original condition as specified in section 8 of this specification. Sump removal shall be conducted without causing pollution.

Sanitary facilities, such as chemical toilets, or septic tanks shall not be located next to live streams, wells, or springs. They shall be located at a distance sufficient to prevent contamination of any water source. At the completion of construction activities, facilities shall be disposed of without causing pollution as specified in section 8 of this specification.

5. Air pollution The burning of brush or slash and the disposal of other materials shall adhere to state and local regulations.

Fire prevention measures shall be taken to prevent the start or spreading of wildfires that may result from project activities. Firebreaks or guards shall be constructed and maintained at locations shown on the drawings.

All public access or haul roads used by the contractor during construction of the project shall be sprinkled or otherwise treated to fully suppress dust. All dust control methods shall ensure safe construction operations at all times. If chemical dust suppressants are applied, the material shall be a commercially available product specifically designed for dust suppression and the application shall follow manufacturer's requirements and recommendations. A copy of the product data sheet and manufacturer's recommended application procedures shall be provided to the engineer 5 working days before the first application.

6. Maintenance, removal, and restoration All pollution control measures and temporary works shall be adequately maintained in a functional condition for the duration of the construction period. All temporary measures shall be removed and the site restored to near original condition.

7. Measurement and payment Method 1—For items of work for which specific unit prices are established in the contract, each item is measured to the nearest unit applicable. Payment for each item is made at the contract unit price for that item. For water or chemical suppressant items used for dust control for which items of work are established in section 8 of this specification, measurement for payment will not include water or chemical suppressants that are used inappropriately or excessive to need. Such payment will constitute full compensation for the completion of the work.

5-3 (210-VI-NEH, January 2014) NRCS – February 28, 2018

Method 2—For items of work for which lump sum prices are established in the contract, payment is made as the work proceeds and supported by invoices presented by the contractor that reflect actual costs. If the total of all progress payments is less than the lump sum contract price for this item, the balance remaining for this item will be included in the final contract payment. Payment of the lump sum contract price will constitute full compensation for completion of the work.

Method 3—For items of work for which lump sum prices are established in the contract, payment will be prorated and provided in equal amounts on each monthly progress payment estimate. The number of months used for prorating shall be the number estimated to complete the work as outlined in the contractor's approved construction schedule. The final month's prorate amount will be provided with the final contract payment. Payment as described will constitute full compensation for completion of the work.

All Methods—The following provisions apply to all methods of measurement and payment. Compensation for any item of work described in the contract, but not listed in the bid schedule is included in the payment for the item of work to which it is made subsidiary. Such items, and the items to which they are made subsidiary, are identified in section 8 of this specification.

5–4 (210-VI-NEH, January 2014) NRCS – February 28, 2018

8. Items of work and construction details Items of work to be performed in conformance with this specification and construction details

a. Item 4 – Pollution Control

(1) The item shall consist of installing measures or performing work to control erosion, and minimize the production of sediment and other pollutants to water and air from construction activities as specified herein.

(2) Attend pre-construction meeting to review aspects of the NPDES Permit and PADEP Letter of Authorization, both obtained by the Owner, to review permitting aspects with the Owner, COR, Engineer and PADEP. Prior to the pre-construction meeting, Contractor shall complete the Co-Permittee Acknowledgment Form for Chapter 102 Permits and comply with the requirements of the NPDES Permit throughout the project duration.

(3) In Section 2 – Material

a) Compost Filter Sock shall be 24” diameter and meet the requirements of

PennDOT Publication 208, Specification Section 867, Compost Filter Sock.

Minimum required diameter shown on Drawings. Wooden stakes shall be 2 inches by 2 inches by 48 inches. Smaller diameter barriers may be stacked in a pyramid configuration to achieve an effective diameter that equals or exceeds the minimum required diameter.

b) Temporary Construction Entrance shall consist of AASHTO No. 1 Coarse Aggregate meeting the requirements of PennDOT Publication 408, Specification Section 703.2; and Class4, Type A Separation Geotextile meeting the requirements of PennDOT Publication 408, Specification Section 736.

c) Erosion Control Blanket shall consist of PennDOT High Velocity Erosion Control Blanket meeting the requirements of PennDOT Publications 408, Specification Section 806. The product shall contain 100% agricultural straw and two organic jute nets securely sewn together with biodegradable thread.

Polypropylene netting is prohibited. Provide biodegradable stakes.

d) Pumper Water Filter Bag shall meet the requirements shown on the Drawings.

e) Temporary seeding shall consist of annual ryegrass (100% by weight).

(4) In Section 3 – Erosion and Sediment Control Measures and Works

a) Install Compost Filter Sock to the limits shown on the Drawings. The barrier shall meet flush with existing grade. Riprap or other materials shall be removed to accommodate a uniform grade for the installation. Support stakes shall be driven to the required depth below the existing ground surface at the intervals shown on the Drawings.

b) Install Erosion Control Blanket on all slopes equal to or steeper than 3H:1V, 5-5 (210-VI-NEH, January 2014) NRCS – February 28, 2018 after final seeding, including the upstream and downstream slopes of the embankment dam. Install per manufacturer’s instructions. Seed and soil amendment shall be applied prior to installing blanket.

c) The Contractor shall install erosion control measures prior to, during, and after any major soil disturbance.

d) The formation of concentrated flows on the drainage slope above the Compost

Filter Sock or other measures is not permitted. If concentrated flow does occur, direct slope stabilization measures shall be employed to prevent such conditions.

e) Surface water shall be diverted away from excavations by means of diversion ditches and diversion berms.

f) The Contractor shall schedule and conduct his operations to limit erosion of soils, and to prevent silting and muddying of downstream systems.

g) Construction of drainage facilities and performance of Work that will contribute to the control of erosion and sedimentation shall be carried out in conjunction with earthwork operations, or as soon thereafter as practicable. The area of bare soil exposed at any one time by construction operations shall be limited.

h) The tires of all vehicles shall be cleaned prior to leaving the site.

i) The Contractor shall not stockpile equipment, topsoil, materials, etc. in otherwise undisturbed areas and areas indicated for the preservation of existing vegetation.

j) The project site shall be available at all times for inspection of authorized employees of the PADEP and Conservation District.

k) The contractor shall maintain a copy of the E&S plan on site at all times.

l) Should any specified measures prove incapable of adequately removing sediment from on-site flows prior to discharge of stabilizing the surface involved, additional measure shall be immediately implemented to address such problems.

(5) In Section 4 – Chemical Pollution

a) Pollutants such as fuels lubricants, bitumens, raw sewage, and other harmful materials shall not be discharged into or near rivers, streams and impoundments, or into natural or man-made channels leading thereto.

b) All applicable regulations of fish and wildlife agencies and statutes relating to the prevention and abatement of pollution shall be complied with.

(6) In Section 6 – Maintenance, Removal, and Restoration

a) Until the site is stabilized, all erosion and sedimentation control measures shall be maintained properly. Maintenance shall include inspection of all erosion and

5–6 (210-VI-NEH, January 2014) NRCS – February 28, 2018 sedimentation control after each runoff event and on a weekly basis. All prevention and remedial maintenance work, including clean out, repair, replacement, regrading, reseeding, remulching, and renetting shall be performed immediately.

b) Any disturbed area on which activity has ceased and that will remain exposed for more than 20 days shall be seeded and mulched immediately. Apply temporary seed mix at 10 pounds over 1,000 SY. During non-germinating periods, mulch shall be applied. Disturbed areas which are not at finished grade and which will be disturbed within one year may be seeded and mulched with a permanent seed mixture and mulch. Areas mulched during the non-germinating period of October 15 to April 1 shall be limed, fertilized, seeded, and mulched by April 20.

(7) In Section 7 – Measurement and Payment, Method 3 will apply.

6-1 (210-VI-NEH, January 2014) NRCS – February 28, 2018

Construction Specification 6—Seeding, Sprigging, and Mulching

1. Scope The work consists of preparing the area for treatment; furnishing and placing seed, sprigs, mulch, fertilizer, inoculant, lime, and other soil amendments; and anchoring mulch in designated areas as specified.

The following BioPreferred® product categories are applicable to this specification:

— mulch and compost materials

— erosion control materials

— fertilizers

— agricultural spray adjuvants

2. Material Seed—All seed shall conform to the current rules and regulations of the state where it is being used and shall be from the latest crop available. It shall meet or exceed the standard for purity and germination listed in section 7.

Seed shall be labeled in accordance with the state laws and the U.S. Department of Agriculture rules and regulations under the Federal Seed Act in effect on the date of invitations for bids. Bag tag figures are evidence of purity and germination. No seed will be accepted with a test date of more than 9 months before the delivery date to the site.

Seed that has become wet, moldy, or otherwise damaged in transit or storage will not be accepted.

The percent of noxious weed seed allowable shall be as defined in the current State laws relating to agricultural seeds. Each type of seed shall be delivered in separate sealed containers and fully tagged unless exception is granted in writing by the contracting officer.

Fertilizer—Unless otherwise specified, the fertilizer shall be a commercial grade fertilizer. It shall meet the standard for grade and quality specified by State law. Where fertilizer is furnished from bulk storage, the contractor shall furnish a supplier's certification of analysis and weight.

When required by the contract, a representative sample of the fertilizer shall be furnished to the contracting officer for chemical analysis.

Inoculants—The inoculant for treating legume seeds shall be a pure culture of nitrogen-fixing bacteria prepared specifically for the species and shall not be used later than the date indicated on the container or as otherwise specified. A mixing medium, as recommended by the manufacturer, shall be used to bond the inoculant to the seed. Two times the amount of the inoculant recommended by the manufacturer shall be used except four times the amount shall be used when seed is applied using a hydraulic seeder. Seed shall be sown within 24 hours of treatment and shall not remain in the hydraulic seeder longer than 4 hours.

Lime and other soil amendments—Lime shall consist of standard ground agriculture limestone, or approved equivalent. Standard ground agriculture limestone is defined as ground limestone meeting current requirements of the State Department of Agriculture. Other soil amendments shall meet quality criteria and application requirements specified in section 7.

Mulch tackifiers—Asphalt emulsion tackifiers shall conform to the requirements of ASTM D 977, Specification for Emulsified Asphalt. The emulsified asphalt may be rapid setting, medium

6–2 (210-VI-NEH, January 2014) NRCS – February 28, 2018 setting, or slow setting. Nonasphaltic tackifiers required because of environmental considerations shall be as specified in section 7.

Straw mulch material—Straw mulch shall consist of wheat, barley, oat or rye straw, hay, grass cut from native grasses, or other plants as specified in section 7. The mulch material shall be air-dry, reasonably light in color, and shall not be musty, moldy, caked, or otherwise of low quality.

The use of mulch that contains noxious weeds is not permitted. The contractor shall provide a method satisfactory to the contracting officer for determining weight of mulch furnished.

Other mulch materials—Mulching materials, such as wood cellulose fiber mulch, mulch tackifiers, synthetic fiber mulch, netting, and mesh, are other mulching materials that may be required for specialized locations and conditions. These materials, when specified, must be accompanied by the manufacturer's recommendations for methods of application.

3. Seeding mixtures, sod, sprigs, and dates of planting The application rate per acre for seed mixtures, sprigs, or sod and date of seeding or planting shall be as shown on the plans or as specified in section 7.

4. Seedbed preparation and treatment Areas to be treated shall be dressed to a smooth, firm surface. On sites where equipment can operate on slopes safely, the seedbed shall be adequately loosened (4 to 6 inches deep) and smoothed. Depending on soil and moisture conditions, disking or cultipacking, or both, may be necessary to properly prepare a seedbed. Where equipment cannot operate safely, the seedbed shall be prepared by hand methods by scarifying to provide a roughened soil surface so that broadcast seed will remain in place.

If seeding is to be accomplished immediately following construction operations, seedbed preparation may not be required except on a compacted, polished, or freshly cut soil surface.

Rocks larger than 6 inches in diameter, trash, weeds, and other debris that will interfere with seeding or maintenance operations shall be removed or disposed of as specified in section 7.

Seedbed preparation shall be discontinued when soil moisture conditions are not suitable for the preparation of a satisfactory seedbed as determined by the contracting officer's technical representative (COTR).

5. Seeding, sprigging, fertilizing, mulching, and stabilizing All seeding or sprigging operations shall be performed in such a manner that the seed or sprigs are applied in the specified quantities uniformly in the designated areas. The method and rate of seed application shall be as specified in section 7. Unless otherwise specified, seeding or sprigging shall be accomplished within 2 days after final grading is completed and approved.

Fertilizer, lime, and other soil amendments shall be applied as specified in section 7. When specified, the fertilizer and soil amendments shall be thoroughly incorporated into the soil immediately following surface application.

The rate, amount, and kind of mulching or mesh shall be as specified in section 7. Mulches shall be applied uniformly to the designated areas. They shall be applied to areas seeded not later than 2 working days after seeding has been performed. Straw mulch material shall be stabilized within 24 hours of application using a mulch crimper or equivalent anchoring tool or by a suitable tackifier. When the mulch crimper or equivalent anchoring tool is used, it shall have straight

6-3 (210-VI-NEH, January 2014) NRCS – February 28, 2018 blades and be the type manufactured expressly for and capable of firmly punching the mulch into the soil. Where the equipment can be safely operated, it shall be operated on the contour. Hand methods shall be used where equipment cannot safely operate to perform the work required.

The tackifier shall be applied uniformly over the mulch material at the specified rate, or it shall be injected into the mulch material as it is being applied. Mesh or netting stabilizing materials shall be applied smoothly, but loosely on the designated areas. The edges of these materials shall be buried or securely anchored using spikes or staples as specified in section 7.

The contractor shall maintain the mesh or netting areas until all work under the contract has been completed and accepted. Maintenance shall consist of the repair of areas damaged by water erosion, wind, fire, or other causes. Such areas shall be repaired to reestablish the intended condition and to the design lines and grades required by the contract. The areas shall be refertilized, reseeded, and remulched before the new application of the mesh or netting.

6. Measurement and payment Method 1—For items of work for which specific unit prices are established in the contract, each area treated is measured as specified in section 7 and the area calculated to the nearest 0.1 acre.

Payment for treatment is made at the contract unit price for the designated treatment, which will constitute full compensation for completion of the work.

When specified as an item of work, mesh or netting is measured to the nearest square yard of surface area covered and accepted. Payment is made at the contract unit price and will constitute full compensation for completion of the work.

Method 2—For items of work for which specific lump sum prices are established in the contract, the quantity of work will not be measured for payment. Payment for this item is made at the contract lump sum price for the item and will constitute full compensation for the completion of the work.

Method 3—For items of work for which lump sum prices are established in the contract, payment is made as the work proceeds. Progress payments will be determined as specified in section 7.

Payment of the lump sum contract price will constitute full compensation for completion of the work.

All Methods—The following provisions apply to all methods of measurement and payment.

Compensation for any item of work described in the contract, but not listed in the bid schedule is item(s) to which they are made subsidiary are identified in section 7.

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7. Items of work and construction details

a. Bid Item 5 – Seeding, Sprigging, and Mulching

(1) This item consists of preparing the area for treatment; furnishing and placing seed, sprigs, mulch, fertilizer, inoculant, lime, and other soil amendments; and anchoring mulch in designated areas as specified herein.

(2) In Section 2 – Material

a) Seed mix shall meet the requirements of PennDOT Formula D as specified in PennDOT Publication 408, Specification Section 804:

i. Tall Fescue (Festuca arundianacea var. Kentucky 31): 60% by weight

ii. Creeping Red Fescue or Chewings Fescue: 30% by weight

iii. Annual Ryegrass: 10% by weight

iv. Minimum purity: 98%

v. Minimum germination: 85%

b) Fertilizer: 10-20-20 Analysis Commercial Fertilizer

c) Lime: Pulverized with 100% passing the U.S. Number 10 sieve, minimum 90% passing the U.S. Number 20 sieve, and minimum 60% passing the U.S.

number 100 sieve. Limes shall meet one of the following chemical requirements:

i. Type MH-High Magnesium (Dolomite), 21% MgO, 20% CaO, 43%

MgCO3 and 51% CaCO3

ii. Type MO-Mixed Oxides (Magnesium), 50% MgO + CaO

(3) In Section 3 – Seeding Mixtures, Sod, Sprigs, and Dates of Planting, seed mix shall be applied at the rate of 50 pounds pure live seed per 1000 SY between March 15 to June 1 and between August 1 and October 15.

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(4) In Section 5 – Seeding, Sprigging, Fertilizing, Mulching, and Stabilizing

a) Agricultural lime shall be applied determined by soil test. The Contractor shall submit soil test results prepared by a certified laboratory to the COR one week prior to seeding. Lime shall be added to correct the pH to 6.5.. Agricultural lime and fertilizer shall be incorporated into the surface during tillage.

b) Straw mulch shall be uniformly spread over the entire area at a minimum rate of

2.5 tons per acre and spread to a depth of two inches loose measure.

c) While moist, straw mulch shall be anchored in the soil by V-type wheel land packer or disc harrow to secure straw firmly in the ground to form a soil binding mulch and prevent loss of bunching by wind. On slopes where machinery cannot be used, mulching material shall be retained in place by shallow covering of earth, by twine and biodegradable stakes, or other suitable means that will not be detrimental to subsequent maintenance.

d) Approved asphalt emulsion may be used as a “tie-down” and shall be applied uniformly over the entire area and through the mulch at a rate not less than 75 gallons per acre. The tackifier shall be non-toxic to plants and seeds.

(5) After seeding, and for three months after substantial completion, perform the following:

a) Mow grass at regular intervals to maintain at a maximum height of 4 inches.

b) Do not cut more than ⅓of grass blade height at any one mowing.

c) Apply water to prevent grass and soil from drying out.

d) Roll surface to remove minor surface depressions and irregularities.

e) Immediately reseed areas which show bare spots.

(6) In Section 6 – Measurement and Payment, Method 1 (horizontal measurement) will

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Construction Specification 7—Construction Surveys

1. Scope The work consists of performing all surveys, measurements, and computations required by this specification.

2. Equipment and material Equipment for construction surveys shall be of a quality and condition to provide the required accuracy. The equipment shall be maintained in good working order and in proper adjustment at all times. Records of repairs, calibration tests, accuracy checks, and adjustments shall be maintained and be available for inspection by the engineer. Equipment shall be checked, tested, and adjusted as necessary in conformance with manufacturer's recommendations.

Material is field notebooks, stakes, templates, platforms, equipment, spikes, steel pins, tools, and all other items necessary to perform the work specified.

3. Quality of work All work shall follow recognized professional practice and the standards of the industry unless otherwise specified in section 9 of this specification. The work shall be performed to the accuracy and detail appropriate for the type of job. Notes, sketches, and other data shall be complete, recorded neatly, legible, reproducible and organized to facilitate ease in review and allow reproduction of copies for job documentation. Survey equipment that requires little or no manual recording of field data shall have survey information documented as outlined in section 9 of this specification.

All computations shall be mathematically correct and shall include information to identify the bid item, date, and who performed, checked, and approved the computations. Computations shall be legible, complete, and clearly document the source of all information used including assumptions and measurements collected.

If a computer program is used to perform the computations, the contractor shall provide the engineer with the software identification, vendor's name, version number, and other pertinent data before beginning survey activities. Computer generated computations shall show all input data including values assigned and assumptions made.

The elevations of permanent and temporary bench marks shall be determined and recorded to the nearest 0.01 foot. Differential leveling and transit traverses shall be of such precision that the error of vertical closure in feet shall not exceed plus or minus 0.1 times the square root of the traverse distance in miles. Linear measurements shall be accurate to within 1 foot in 5,000 feet, unless otherwise specified in section 9 of this specification. The angular error of closure for transit traverses shall not exceed 1 minute times the square root of the number of angles turned.

The minimum requirements for placing slope stakes shall be at 100-foot stations for tangents, as little as 25 feet for sharp curves, breaks in the original ground surface and at any other intermediate stations necessary to ensure accurate location for construction layout and measurement. Slope stakes and cross sections shall be perpendicular to the centerline. Significant breaks in grade shall be determined for cross sections. Distances shall be measured horizontally and recorded to the nearest 0.1 foot. Side shots for interim construction stakes may be taken with a hand level.

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Unless otherwise specified in section 9 of this specification, measurements for stationing and establishing the location of structures shall be made to the nearest 0.1 foot.

Elevations for concrete work, pipes, and mechanical equipment shall be determined and recorded to the nearest 0.01 foot. Elevations for earth work shall be determined and recorded to the nearest

0.1 foot.

4. Primary control The baselines and bench marks for primary control, necessary to establish lines and grades needed for construction, are shown on the…