CHAPTER 10 – HAZARDS AND HAZARDOUS MATERIALS - sacog

Widely accepted practice standards for the preparation of Phase I ESAs have been developed by
the ASTM, including an on-site visit to determine current conditions; an evaluation of possible
risks posed by neighboring properties; interviews with persons knowledgeable about the site’s
history; an examination of local planning files to check prior land uses and permits granted; file
searches with appropriate agencies having oversight authority relative to water quality and/or
soil contamination; examination of historic aerial photography of the site and adjacent
properties; a review of current topographic maps to determine drainage patterns; and an
examination of chain-of-title for environmental lines and/or activity and land use limitations.
Preparation of and compliance with a Phase I ESA for properties at risk of potential hazardous
materials and/or waste contamination will avoid adverse impacts associated with build-out of
SCS land uses. If a Phase I ESA indicates the presence, or potential presence of contamination, a
site-specific Phase II ESA could be required to test soil and/or groundwater. Based on the
outcome of a Phase II ESA, remediation of contaminated sites under federal and state
regulations, administered at the local level, could be required prior to development.
However, because not all proposed MTP/SCS projects will necessarily include a Phase I ESA or
Phase II ESA, the hazard impacts related to transportation improvements from implementation
of the proposed MTP/SCS at the regional level are considered potentially significant (PS) for
Impact HAZ-4. See Mitigation Measure HAZ-2 below.
B. Localized impacts
Except as provided below, the localized impacts associated with implementation of the proposed
MTP/SCS are the same in each of the Community Types as described in the regional impacts
discussion above. Land use and transportation projects in Center and Corridor Communities,
Established Communities, Developing Communities, and Rural Residential Communities have
the potential to result in development on a site which is included on a list of hazardous materials
sites compiled pursuant to Government Code Section 65962.5.
Therefore, the potential to cause a public hazard related to land use and transportation impacts
from implementation of the proposed MTP/SCS at the localized level is considered potentially
significant (PS) for Impact HAZ-4. See Mitigation Measure HAZ-2 below.
The one Community Type excepted from the foregoing is the land use impacts in Lands Not
Identified for Development. Existing development in these areas consists primarily of farm
homes, agricultural‐related uses, forestry, mining, public lands such as waste water treatment
facilities, and other rural uses. Although some housing and employment growth, consistent with
historical trends, associated with agriculture, forestry, mining, and other rural uses may occur in
this Community Type within the MTP/SCS planning period, the proposed MTP/SCS does not
forecast any development in these areas by 2035.
Therefore, the potential to cause a public hazard related to the land use changes from
implementation of the proposed MTP/SCS in Lands Not Identified for Development
Community Type is considered less than significant (LS) for Impact HAZ-4. No mitigation is
required.
MTP/SCS 2035
Sacramento Area Council of Governments
Draft Environmental Impact Report Chapter 10 – Hazards and Hazardous Materials – Page 10-53