Moraga Road and Hacienda Drainage Project

 A 12-inch storm drain in the Hacienda Parking Lot will be abandoned, and a new 12-inch HDPE storm drain will be installed at a new alignment.  A 60-inch Corrugated Metal Pipe (CMP) will be repaired using contact grouting and invert lining, and a new maintenance access manhole will be installed on this storm drain. The new 12-inch HDPE storm drain will connect to the new maintenance access manhole. The third storm drain to be repaired is a 24-inch CMP cross culvert on Moraga Road.  This culvert will be lined with Cured-In-Place Pipe (CIPP), and approximately 10 feet of the pipe will be replaced with a 24-inch HDPE pipe. The project is funded by American Rescue Plan ACT (ARPA), and the DBE goal for the construction contract is 15%. The estimated construction budget for the project is  $250,000.

 On May 27, 2020, the Town Council awarded a $30,125 annual contract to 360 Pipeline Inspections, LLC (360 Pipeline) for On-Call Town Storm Drain Operations and Maintenance CCTV Inspection and Cleaning Services.  In September 2020, 360 Pipeline and Town staff began the first annual proactive inspection of the Town’s storm drain facilities using CCTA cameras.  The inspection included 23 pipe segments consisting of 1,920 linear feet of priority corrugated metal pipe (CMP).

 Severe deficiencies were discovered in three storm drainpipe segments underlying portions of:

1. Hacienda de las Flores parking lot entryway – the damaged 12-inch diameter CMP consists of an eroded invert connected to a Drop Inlet located on the south side of Donald Drive immediately west of the Hacienda de las Flores entrance.   
2.  Hacienda de las Flores parking overflow parking lot adjacent to Donald Drive - The 60-inch box concrete culvert connects to a 60-inch diameter CMP that extends to an outfall about 110 feet south of Donald Drive.  The CCTV inspection showed that the metal in the CMP inverts had eroded along the length of the pipes and that there was corrosion and defects in the pipes along the sides.  
3. Moraga Road under street crossing near Corliss Drive - The damaged 36-inch diameter CMP storm drain across Moraga Road is connected to a Drop Inlet on the eastern side of Moraga Road and a Drop Inlet on the western side of Moraga Road.   The CMP then continues westerly into a private storm drain and outfall at Laguna Creek.  The CCTV inspection showed that the metal in the inverts of the CMP under Moraga Road had eroded through along the length of the pipes and that there was minor corrosion and defects in the pipes along the lower sides.   Additionally, there was a large penetration at a joint where the joint had collapsed inwards.  

 On January 27, 2021, the Town Council awarded a Design Services Agreement to WRECO (Walnut Creek) for the Design of the Moraga Road and Hacienda Parking Lot Storm Drain Rehabilitation Project (CIP 21-206) to repair or replace the three segments of damaged CMP.

WRECO worked closely with staff to complete the Project Bid Package documents.   The project documents for the Moraga Road and Hacienda Drainage Project (CIP 21-206) were finalized and advertised for bidding on December 20, 2021, pursuant to Moraga Municipal Code Chapter 3.06, and Public Contract Code Section 22037 was advertised on the Town’s website, in the Contra Costa Times, and numerous builder’s exchanges.  The public construction bid opening was held on Thursday, February 3, 2022, at 2:00 p.m.  

The construction contract was awarded to Kerex Engineering, and Notice to Proceed issuance - First Working Day Monday, May 2, 2022. The working hours are 9 AM to 3:30 PM on Moraga Road and 8 AM to 5 PM at the Hacienda Parking Lot.

Construction Project Manager - Larry Theis, AnchorCM Engineering   ltheis@anchorcm.com             (925) 890-9732

Contractor - Patrick Madden, KEREX Engineering - patrick@kerexengineering.com           (347) 613-5788

Project Manager - Farah Khorashadi, Town of Moraga- fkhorashadi@moraga.ca.us             (925) 888-7023