Exhibit A
NASHUA 16314 — East Hollis & Bridge Street Intersection Improvement Project
Scope of Work and Task Descriptions
Amendment 1
September 30, 2021
assess the project’s impact on local pollutant concentrations to assess conformance with
National Ambient Air Quality Standards (NAAQS).
Harris Miller Miller & Hanson Inc. (HMMH) will conduct a microscale analysis using
existing available vehicle mix data along with standard vehicle and meteorological
assumptions as the input variables to calculate emissions factors. MJ will provide
general oversight of HMMH’s schedule and work products and will review reports and
findings prior to submittal to the City and NHDOT.
Noise — The proposed alignment does not result in a substantial horizontal or vertical
alteration. The additional lanes being added consist of turn lanes, not through-traffic
lanes. Therefore, the proposed intersection improvement project is not a Type | highway
project and a noise impact study and abatement assessment will not be required. MJ will
document any horizontal and vertical alterations in the roadway alignment relative to
potential receptors. A qualitative discussion of why the project is not considered a Type
| project will be included in the NEPA document.
Water Quality — Potential water quality impacts will be evaluated and mitigation
measures will be designed to meet the City’s Stormwater Management Ordinances to
the maximum extent practical. Increases in pavement and stormwater runoff will be
quantified. The proposed drainage system will connect to the City’s existing separated
storm drain system. Permitting and compliance requirements pertaining to Alteration of
Terrain, MS4, and construction water quality will be identified.
Wetlands and Surface Waters — Jurisdictional areas were delineated during Phase 1 of
the project. It is assumed that the project will not impact the Merrimack River. Portions
of the project are located within the Protected Shoreland (within 250 feet) of the
Merrimack River and it is assumed that proposed work will require a Shoreland Permit
from NHDES. Preliminary impacts to the protected shoreland will be calculated and
described in general terms for the NEPA document.
Threatened/Endangered Species, Wildlife, and Fisheries Habitat —- MJ will request an
updated NH Natural Heritage Bureau (NHB) database review and the USFWS Official
Species List for the study area.
It is assumed that no coordination will be required for State listed species. It is
anticipated that the project will be eligible for review under the Federal Highway
Administration and Federal Railroad Administration Range-Wide Biological Assessment
for Transportation Projects for Indiana Bat and Northern Long-Eared Bat Programmatic
Consultation. MJ will complete the regulatory review determination key in the USFWS
IPaC webtool for NHDOT’s use in consultation with USFWS. NHDOT will provide MJ
with the USFWS concurrence letter for inclusion in the NEPA document.
Cultural Resources — Preservation Company (PC) and Independent Archeological
Associates (IAC) will complete required historic resource and archaeological surveys
(see attached scopes of work). MJ will provide general oversight of PC’s and IAC’s
schedule and work products and will review reports and findings prior to submittal to the
City and NHDOT.
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