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

4. 3. Water (Hydrology)
will not significantly decrease water quality below existing levels because in general new
development will replace old development, thus not substantially changing the quantity of land
covered by impervious surfaces, and because of City enforcement of National Pollutant
Discharge Elimination System (NPDES) requirements.
PROJECT IMPACTS
Drainage. The DreamWorles Animation Campus site contains a drainage ditch, running
from west to east across the southern portion ofthe property, which drains the site during heavy
rains. 20 This swale drains through the southeast comer of the property and enters directly
into the Los Angeles River. A drainage study will 1?e required to determine what sort of
replacement drainage structures will be needed to accommodate the runoff associated with the
project site.
A new 60-inch storm drain borders the northeast side of the site along Flower Street and
the 96-inch Paula Avenue storm drain runs under the current easement for Victory Truck
Boulevard. Both of these drains outfall directly into the Los Angeles River, to the southeast
and south of the project site, respectively. The Los Angeles County Flood Control District has
indicated that the Paula Avenue stonn drain has been designed to receive runoff from only the
western third of the project site. 21 Therefore, a storm drain shall be installed on-site that
would direct drainage from the eastern two thirds of the property into the adjacent Los Angeles
River via the existing spillway. The proposed storm drain would also accommodate some storm
water runoff from the southern end of Flower Street, adjacent to the property. The City of
Glendale Department of Public Services, the Los Angeles County Flood Control District, and
the U.S. Army Corps of Engineers shall review project stonn drain plans to ensure that the
plans meet City, County, and U:S. Army Corps standards and that the Los Angeles River has
adequate capacity to accommodate project generated runoff. On-site drainage would be
adequately managed with the construction of the proposed stonn drain and the implementation
of the other mitigation measures identified at the end of this section.
Flood Control. The proposed project is not within a lOO-year flood zone and is
designated within FEMA Flood Zone D. Within Flood Zone n, flood hazards are
undetermined but flooding is possible. No mandatory flood insurance purchase requirements
20 Dames & Moore. Preliminary Geotechnical Investigation, LADWP Crystal Springs Maintenance Yard,
November 3, 1995, page 4.
21
B & E Engineers, Paul Mangaudis. telephone conversation, April 3, 1996.
Planning ConsullllnlS Research
Glendale RedeveloJHDent Agency
Page 38
DreamWorks ADimatiou Campus Addendum EIR
June 1996