Advanced Modeling Identifies Storm Drain Solutions

Cities in the Coachella Valley have a history of dealing with damaging summer flash floods. Intense thunderstorms can dump several inches of rain in a short time while runoff rushes from the nearby San Jacinto Mountains into the lowland flats where the cities are built. The City of La Quinta suffered back-to-back damaging summer storms…

Managing Shot Hole Borer Infestation

The polyphagous shot hole borer (PSHB), a forest pest from Southwest Asia, is attacking and killing  hundreds of California native tree species, including coast live oak, western sycamore, and red willow. While most bark beetles feed on the tree itself,  PSHB feeds on a fungus it introduces and transports from tree to tree. The fungus…

Developing Bid Documents for CIPP Sewer Rehab

Many cities whose sewer systems were constructed in the first half of the 20th century are plagued by sanitary sewer overflows (SSOs) due to long-neglected root intrusion and pipe defects. To combat this, sewers can be rehabilitated using trenchless cured-in-place pipe (CIPP) lining. This    , and with far less public and environmental impact. Producing Thorough…

Pursuing the Path to Historic Designation

California is home to countless historic places, some dating back more than a century, and many of which carry no official historic designation. Historic designation on local, state or national registers offers a variety of benefits to property owners and communities, including the formal recognition of a property’s historical or architectural significance, the promotion and…

How to Identify Regulated Wetlands

Man-made, moved or maintained jurisdictional waters of the United States and/or waters of the state of California (wetlands) often occur in the most unlikely places. Unsuspecting property owners may be lulled into a false sense of security with the notion that their improvement project is not subject to federal regulation by the U.S. Army Corps…

How to Negotiate Permits that Ensure Project Success

Negotiating project-appropriate conditions for your environmental permits will help avoid costly consequences, such as construction delays, tied-up bonding capacity, and extraneous years of site mitigation, monitoring and maintenance.

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