Questions with Responses_0002.pdf

1. On the period of performance; the solicitation text reads:

"The estimated Period of Performance will be from 8/31/2020 through 6/30/2020."

Is the end date of the period of performance supposed to be 6/30/2021, or 10 months total, can you confirm?

Yes, the intended end date of the period of performance is 6/30/2021.

2. Will payment and performance bonds be required for this project?

No, payment and performance bonds are not required for this project.

3. Will we be able to park (1) service vehicle on the grass/pavement adjacent to wrought iron fences while work is underway at that specific location?

You can park on NPS property as long as vehicles remain on paved surfaces. Parking on grass is not permitted. Vehicles are permitted to park adjacent to work areas with prior coordination with the park.

Contractor must obtain temporary parking permit from the park to display in their vehicle.

4. Will cones and caution tape be acceptable as a perimeter around vehicles/workers at each fence location while lead abatement/painting work is being performed?

Please refer to the SOW:

“Contractors are authorized to fence off their work sites with fencing that follows the Site Protection Fencing Specification” sheet; which is attached.

Specifications:

PART 2- PRODUCTS

1 .1 GENERAL

1 .2

A. Material may be new or used, but shall be suitable for intended purpose. Fences and barriers shall be structurally adequate and neat in appearance.

B. 6’ Chain link Fence

Part 3 Execution in the Specifications: Protection of Public: Fence, barricade, or otherwise block off the immediate work area to prevent unauthorized entry. Removal: Completely remove barriers no longer needed when approved by COR.

5. I did not find any information in the solicitation stating whether the proposal was to be FedExd or via email. Can you please clarify. Thank you.

Responses must be emailed to juricka_nawrozzada@nps.gov by the due date/time listed in the solicitation.

mailto:juricka_nawrozzada@nps.gov

Installation of Wildlife-Friendly, Visitor Exclusion Chain Link Fencing National Mall and Memorial Parks, Resource Management Guidance

National Mall and Memorial Parks (NAMA) visitation exceeds over 35 million annually. In order to protect visitors and natural and cultural resources, chain link fence is typically installed to exclude visitors from an area. Although NAMA is an urban park, it provides habitat for several wildlife species. Over 25,000 feet of chain link fence has been installed in the park, which not only creates a barrier to wildlife but has other influences on wildlife. Fencing affects wildlife by reducing the amount of available suitable habitat via habitat fragmentation and increasing travel time and increasing exposure to predators and human activities (Jakes et al. 2018). Other negative effects of fencing include; entanglement of animals on fencing (Paige 2012, Rey et al. 2012) and separation of adults with juveniles (Harrington and Conover 2006). In order to decrease habitat fragmentation and reduce human impacts on wildlife at NAMA, the Division of Resource Management recommends the utilization of wildlife-friendly fencing or proper mitigation to decrease the negative impact fencing may have on wildlife species. Mitigation practices should include; install fencing low enough for adult animals to jump, high enough for animals to crawl under, and both top and bottom should minimize the chance of sagging or entanglement by reducing sharp edges.

Issues and Solutions

Height and Length

Issue: Fencing that extends longer than 150 ft or encloses an area can become an entrapment area for smaller and or-less agile wildlife such as ducklings, turtles, foxes, and white-tailed deer fawns. The height of the fence (length > 150 ft) can also be an issue, as wildlife may not be able to jump or fly over.

Solution:

● Fencing longer than 150 ft or that encloses an area not meant to exclude wildlife should be installed no higher than 40 inches (preferred) 42 inches max, or have a 40 inch height refuge section every 75 ft.

Height an adult deer can jump over with ease

● Newly installed fence should be installed with a minimum 12” between the base of the fencing and the ground. The bottom wire should be smooth to enable wildlife to crawl under without getting snagged/entangled (Paige 2012).

This allows small and young wildlife to safely travel under

● Existing fencing should allow for either 12” the entire length of the fence (see above) OR wildlife access points (12” X 16”) cut every 75 ft. Wildlife access points may leave prey species vulnerable to predators as they identify access points for prey availability.

Snag and Entanglement

Installation of Wildlife-Friendly, Visitor Exclusion Chain Link Fencing National Mall and Memorial Parks, Resource Management Guidance

Issue: Chain linked fence can have sharp tops, and if cut at the bottom to allow for an 12” access can also be sharp at the base. Fencing with jagged tops can result in wildlife entanglement (Paige 2012, Rey et al.

2012).

Solution:

● Install all chain linked fence with smooth tops and bottoms

Literature Cited

Harrington, J. L., M. R. Conover. 2006. Characteristics of ungulate behavior and mortality associated with wire fences. Wildlife Society Bulletin. 34 (5), 1295-1305.

Jakes, A. F., P. F. Jones, L. C. Paige, R. G. Seidler, M. P. Huijser. A fence runs through it: A call for greater attention to the influences of fences on wildlife and ecosystems. Biological Conservation.

227, 310-318.

Paige, C. 2012. A Landowner’s Guide to Wildlife Friendly Fences: How to Build Fence with

Wildlife in Mind, Second edition. Private Land Technical ASsistance Program, Montana Fish, Wildlife and Parks, Helena, Montana.

Rey, A., A. J. Novaro, M. L. Guichon. 2012. Guanaco (Lama guanicoe) mortality by entanglement in wire fences. Journal for Nature Conservation. 20 (5), 280-283.