Design Criteria Document
Mira Loma Women’s Detention Center
Section 3.1:
SCOPE OF CONSTRUCTION / SITE CIVIL
GENERAL:
The existing on site utilities consist of sanitary sewer lines, gas lines, electrical lines, domestic water lines and cold softened
water lines. Existing and proposed Sanitary sewer lines, combined domestic and fire water lines, and storm drain lines will
be the utilities taken under account in this narrative. The existing utility locations were derived from as-builts provided by the
County of Los Angeles Facilities Management Department, approved on the 14th of October, 1987. Most of utility
improvements will take place within AB 900 project boundary.
Existing:
Sewer: All on-site domestic water and sanitary sewer lines discharge into their respective main line located along Avenue I
from servicing various buildings on-site. This system also includes the sewer lines within the employee residential area just
west of 60th Street. Sizes of sewer lines range from 6-inches in diameter to 15-inches in diameters. There is an existing
sewer line that has been abandoned-in-place east of the current helicopter pad. There are three lateral connections from the
on-site sewer lines to the trunk line. It must be noted that existing sewer lines cross existing domestic water lines.
The existing sewer lines service existing buildings such as, but not limited to, the employee residential area, the
Administration building, program’s office, low-side barracks, high-barracks, kitchen, on-site hospital, on-site guard towers,
and the main control and infirmary/processing building.
Storm Drain: Site analysis of the existing surface elevations, within the boundaries of the AB 900 delineation, show that the
onsite surface flow drains outward and off the site from three different locations.
Most of the site’s surface flow drains from a North West to a South East direction. There is a concrete gutter beginning at
the 14 foot gate north of Building 3. Going through between building 2 and 3 heading towards the basketball court between
building 23 and 25, collecting the surface water from the buildings in the area. Here the concrete gutter separates and the
flow path continues to the curb and gutter that surrounds the turf area that separates barracks 7 through 15 and barracks 16
through 22, collecting the surface water around the barracks as well as 9 concrete gutters that are located between the
individual barracks. The concrete gutter ends past the second 14 foot perimeter fence and discharges the flow out onto the
adjacent landscape area.
Proposed:
Sewer: Proposed sewer lines will require installations of new pipes as well as the abandonment or removal of existing sewer
lines. New sewer lines shall size accordingly: 6 inches in diameter for the connection from the buildings and 8 inches in
diameter for all laterals leading to the 15-inch main line. New sewer lines including newly installed sewer manholes will be
connected from an existing sewer line in the southern region by the barracks and will continue along the perimeter of the
barracks and reconnect to another existing sewer line. The previous sewer line that ran across the barracks will be
disconnected and abandoned in place. Sections of the disconnected pipe will shall be removed where a new building,
Building H, is to be constructed.
Similarly, the existing sewer pipe that services the existing kitchen shall be rerouted around a new building to be
constructed. Laterals shall be constructed to service existing building as well as new buildings. The disconnected section
shall be abandoned in place. The area within the footprint of the building shall be removed in its entirety.
In addition to new sewer lines, sewer manholes shall be installed at a maximum of 300 feet.
Storm Drain: A proposed storm drain system shall be installed within the AB900 project boundary that includes a series of
underground pipes connected from various area drains throughout the site. These pipes shall converge to discharge into a
curb drain located on Avenue I. The pipes will size at 12-inches in diameter while the curb drain will house three pipes, 4inches in diameter. In addition to this system, 30,000 square feet of the site is dedicated to three bio infiltration areas. These
include two bio swales with underground infiltration areas at 10,000 square feet located at across the fire lane from Barracks
7 – 15 and another across the fire lane from Building H. Another underground infiltration structure is located under the
sports field in a 20,000-square-foot area. Adjacent to the bio infiltration areas and the curb drain will be a bubbler catch
basin to prevent overflow.
June 1, 2014
Page 3.1-1
Design Criteria Document
Mira Loma Women’s Detention Center
Section 3.14:
SCOPE OF CONSTRUCTION / BUILDING BY BUILDING REQUIREMENTS
June 1, 2014
Page 3.14-1