Spangler_Pedestrain_Trail_Project_Overview_7DEC23_1.pdf

SPANGLER FARM TRAIL GETT 221423

Project Overview

Gettysburg National Military Park Gettysburg, PA

SPANGLER FARM PEDESTRIAN TRAIL (PMIS# 221423)

PROJECT OVERVIEW

NATIONAL PARK SERVICE

GETTYSBURG FOUNDATION

March 2022

100% CONSTRUCTION DOCUMENT SUBMISSION

1.1 PROJECT OVERVIEW AND SUMMARY

A. Project Location: Gettysburg National Military Park, Adams County, Pennsylvania. Refer to the Drawings for specific location of the Project within the Park.

B. Project Overview.

This project is for the construction of a pedestrian trail on the Gettysburg National Military Park.

The trail begins near the trail that runs from Emmitsburg Road to the Gettysburg National Military Park Visitor Center and Museum. The proposed trail runs south and southeast on the east side of and roughly parallel to Emmitsburg Road for approximately 1300 linear feet. The trail then turns east roughly parallel to the Granite Schoolhouse Road before turning and making a north-south crossing of Granite Schoolhouse Road. The trail then continues southward approximately 225 feet then turning southeast to the National Park Property line at STA 16+65.

The trail is paved, ten (10) feet wide with a packed aggregate subsurface. There is a proposed pedestrian bridge crossing a stream approximately 250 feet from the trail’s starting point along Emmitsburg Road. There is to be a properly marked constructed crosswalk where the trail crosses Granite Schoolhouse Road, with specified signage.

This trail and all trail components will conform to the United States Access Board Summary of Accessibility Standards for Federal Outdoor Developed Areas, May 2014.

All phases of work and all components of this contract are to be constructed in accordance with the contract drawings, 414390100 – Spangler Trail CD Plans, and SPANGLER FARM TRAIL (PMIS# 221423) PROJECT SPECIFICATIONS, dated March 2022.

The dimensions, distances, locations and directions provided above are approximations only and should not be used as specific project specifications or details.

All sections of this document are from Gettysburg National Military Park, Gettysburg, PA SPANGLER FARM TRAIL (PMIS# 221423), PROJECT SPECIFICATIONS, National Park Service & Gettysburg Foundation, 100% Construction Document Submission, March 2022. That document is assumed to be correct.

C. The Work consists of the following:

1. The contractor will adhere to the specifications set forth in the design included in the solicitation as the default plan. If there are specific conditions that render the design plans unviable, the contractor will notify the Contracting Officer through the COR on a case-by-case basis.

2. The contractor will choose the methods of excavation, equipment choice and usage, and general work methods for the completion of the trail that present the least disturbance to the natural surroundings and the existing environment as possible.

3. Construction of paved trails.

a. As per the specifications, paved trails conform to existing paved trails in the park, 10 feet wide

b. Length of trail is approximately 1700 feet

c. The contractor is responsible for providing all materials to include needed gravel, stone, and other aggregates in accordance with the following sections:

Section 31 00 00 - Earthwork Section 31 11 00 - Clearing and Grubbing Section 31 23 13 - Trail Excavation, Fill, and Compaction Section 31 23 33 - Trenching, Backfilling, and Compacting

Section 31 32 19.23 - Geotextile Layer Separation

2. Drainage improvements.

a. As needed to allow the proper drainage of stormwaters and to allow the existing natural flow of surface and subsurface water to continue unimpeded.

b. The stormwater management plan will be primarily through the installation of vegetated swales and rain gardens.

c. The rain gardens and vegetated swales will have indigenous vegetation species appropriate for use in rain gardens and vegetated swales.

d. The rain gardens and vegetated swales will be constructed in accordance with the specifications outlined in the George Spangler Train Project Post Construction Stormwater Management Plan, February 8th, 2021.

3. Site grading limited to necessary grading for the construction of the trail and the restoration of the landscape post-construction. Site and construction grading will be conducted in accordance with the following sections:

Section 31 00 00 - Earthwork Section 31 11 00 - Clearing and Grubbing Section 31 23 13 - Trail Excavation, Fill, and Compaction Section 31 23 33 - Trenching, Backfilling, and Compacting

Section 31 32 19.23 - Geotextile Layer Separation Section 32 92 19 - Finish Grading & Seeding

4. Landscaping to construct water gardens and to restore the landscape in the vicinity of the trail to natural conditions. Landscaping and seeding will be conducted in accordance with the following sections:

Section 32 90 00 - Landscape Planting

Section 32 92 19 - Finish Grading & Seeding

5. Installation of a prefabricated bridge and associated foundations.

a. This bridge will be of similar construction to existing pedestrian bridges on the existing trail.

b. Prefabricated pedestrian bridge will meet all specifications outlined in Section 32 34 13 - Prefabricated Pedestrian Bridge.

6. Installation of stormwater management features in accordance with Section 33 41 00 - Storm Drainpipe.

7. Installation of a pedestrian crosswalk over Granite Schoolhouse Road

a. The pavement for the crosswalk will be marked with painted hashmarks’

b. The crosswalk will be properly marked with signage in accordance with Spangler Trail CD Plans.

c. The signs will be mounted on 4in by 4in treated wooden post.

d. Pavement markings will be in accordance with Section 32 17 23 - Pavement Markings.

8. Other miscellaneous site improvements.

C. Terms. Use of the term “proposed” is not to denote an optional portion of any aspect or component of the project. The term is used to distinguish between existing Park features and those features that will be constructed or installed as part of this project.

D. Use of power and hand tools.

a. There are no restrictions on the use of power tools for this project.

b. The Contracting Officer will determine if there is any situation which will limit the use of power tools for the protection and preservation of any historic structure or Park features.

E. The staging area for contractor use is located at 45 Granite Schoolhouse Road, Gettysburg, PA 17325.

END OF SECTION 1.1