SR-73 replace plastic sheeting with permanent drainage channel lining in median area

Summary

SCH Number
2021080311
Public Agency
California Department of Transportation, District 12 (DOT)
Document Title
SR-73 replace plastic sheeting with permanent drainage channel lining in median area
Document Type
NOE - Notice of Exemption
Received
Posted
8/17/2021
Document Description
The project is located on SR-73 near Cabot Road (PM 11.0/11.3) in the City of Laguna Niguel in Orange County. The project proposed to install geomembrane, claymax layer and gravel in median area within the project limits. The damaged plastic sheeting will be replaced with channel lining in the median to improve safety of the maintenance crew and public. The project includes to excavate 12’ existing slope and compact to smooth grade to median V-dtich. And 1 ½ ft wide x 1 ½ ft deep tranches along the V-ditch on both sides and place 30-mil thick, double layer HDPE geo-membrane anchor at both ends. In addition, claymax liner will be overlayed on top of geomembrane, except trenches and a 6” dia. PVC perforate PVC drain with 6” burrito wrap in trench will be placed. And a 12” thick gravel layer or excavated soils over the claymax liner and compact will be placed to obtains sloping grades to drain to V-ditch This project is funded by 2022 SHOPP and it’s a minor B project.

Contact Information

Name
Carmen Lo
Agency Name
Caltrans District 12
Contact Types
Lead/Public Agency

Location

Cities
Laguna Niguel, Orange
Counties
Orange
Regions
Citywide
Cross Streets
Cabot Road
State Highways
73

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
1(C)
Reasons for Exemption
existing facilities
County Clerk
Orange
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