The Contractor, Granite Rock Company, has completed all improvements related to the H Street Green Streets Project.  Staff recommends project acceptance by the City Council in the final construction contract amount of $4,065,938.79.

The H Street-Green Street Improvements Project is a sustainable redevelopment project that mimics natural systems to provide essential storm drainage function and contributes to overall quality of life while reducing water and air pollution, increasing groundwater recharge and reducing water and energy consumption.  The project also creates a landscaped, pedestrian-friendly roadway on H Street from 4^th Street to 12^th Street.  This project continues the green street improvements on H Street that were previously installed from 12^th Street to 15^th Street as part of the South Decoto Green Street project.

The intersection improvements consist of storm water filtration planters (rain gardens), sidewalk bulb-outs and specially marked crosswalks.  The bulb-outs will also serve to shorten crosswalk lengths, thereby enhancing pedestrian safety and slowing traffic.  The mid-block improvements consisted of installing permeable block pavers at the parking lanes for flow detention which will also reduce peak flow rates and peak volumes by increasing infiltration into the soils and filter runoff to improve water quality before allowing storm water to enter the existing storm drain system, which outfalls to Alameda Creek

New street trees and other native landscaping have been planted along the length of the streets, within and adjacent to the bio-filtration planters, to provide natural cooling, water purification and natural aesthetics.

Bids were received for this project on June 28, 2016.  On July 26, 2016, City Council awarded a construction contract for this project to Granite Rock Company in the amount of $3,001,180 for completion of H Street Green Street Improvements.  Project construction began on November 7, 2016.  On January 10, 2017, the City Council approved and awarded Contract Change Order (CCO) #1 in the total amount of $334,493.78 to include improvements from 4^th Street to 5^th Street and from 11^th Street to the Union Pacific Railroad crossing and upgrade of the brick pavers to a ‘permeable’ brick. 

As construction proceeded, there were significant delays and added costs due to utility conflicts and unforeseen site conditions along H Street.  On March 13, 2018, City Council approved contract change orders up to an additional $715,000 to account for the project delays and changes up to a total construction contract amount of approximately $4,200,000.

The project was substantially completed in August, 2018 and all final project punch-list items have now been resolved.  The final construction contract cost for the project work is $4,065,938.79.  The increase from the original contract is accounted for by contract changes orders related to unforeseen site conditions and utility conflicts that occurred throughout the duration of the project.  A summary of contract change orders is listed in the attached Notice of Acceptance.  A total of fifty six (56) contract change orders were processed for this project. 

Estimated project construction related costs to date are as follows:

Project funding is budgeted through a combination of State Prop. 84 Grant (Fund 4100 of $3,000,000), City’s Allied Waste Vehicle Impact Fee (Fund 2620 of $520,000) and County Measure F Vehicle Registration Fee (Fund 2544 of $354,000) and $1,234,000 from the 2011 Bond proceeds (Fund 4160).  

The total project budget with the State Grant, the 2011 bonds, and the City’s Allied Waste Vehicle Impact Fee and Measure F funds is $5,108,000.  Sufficient funds are available in the approved project budget for the requested contract acceptance.

It is recommended that the City Council adopt the attached resolution accepting the H Street Green Streets Project from Granite Rock Company for the final contract amount of $ 4,065,938.79.