UBLIC HEARING: Director of Development ... - City of Glendale

4. 3. Water (Hydrology)
apply in Flood Zone D. The Los Angeles River, which serves as a flood control channel and
is adjacent to the project site, will accommodate and contain stormwater associated with a 100year
frequency storm event, according to FEMA Flood Insurance Rate Maps.22 Since the
proposed project is not in a IOO-year flood zone and the Redevelopment Plan includes capital
improvements which are expected to adequately reduce flooding potential in the Redevelopment
Area, the proposed project is not anticipated to have a significant impact due to potential
flooding.
Surface/Groundwater Resources. The project site contains a drainage ditch which
facilitates drainage of the site during periods of heavy rain.23 Recent borings of the site
conducted for a Geotechnical Report indicate that groundwater was encountered at a depth of
28 feet. 24 Although at one time there were four groundwater wells operating on-site, three of
the wells have been plugged and are considered abandoned dry holes and one has been
completely removed. Based on the site assessment that was prepared for the project site, there
is no information to suggest that either historical or current activities have contributed to
groundwater contamination beneath the site. 25 Maps from the EPA groundwater investigation
reveal that the project site is in an area of "least (lowest) groundwater contamination...26 The
three on-site wells that EPA proposed as part of its groundwater remediation program extraction
system will be relocated to positions along the site's northern boundary where their functions
will be maintained without interference with proposed structures and activities. Neither the
existing or proposed uses would present any substantial risk of contamination to surface or
groundwater on the site. Proposed project impacts on groundwater would, with the mitigation
measures included in the Program EIR, be less than significant.
MITIGATION l\1EASURES
In addition, the following mitigation measures from the Program EIR may be applicable
to this project.27
22 A IOO-year storm event is defined as a storm with a one in one-hundred chance ofoccurring within a given
year.
23 Dames &: Moore. Preliminary Geotechnical Investigation. LADWP Crystal Springs Maintenance Yard.
November 3. 1995. page 4.
24 Ibid, page 5.
25 Dames & Moore. Phase 11 Site Characterization. January 25. 1996. page 5.
26 Program EIR Final EIR Volume. Appendices. Section F. Attachment C.
27 Ibid. pages 3.3-4 and 3.3-5.
Planning Consull3nts Research
Glendale Redevelopment Agency
Page 39
DrcamWork$ Animation CamPII!i Addendum EIR
June 1996