Natomas Basin Reach A Levee Improvement Project

American River Common Features - Natomas Basin, Reach A Levee Improvement Project. The project would improve approximately 3.5 miles of Sacramento River levee along Garden Highway between Gateway Oaks Drive and San Juan Road. The levee improvements would be a combination of seepage cut-off wall (both deep-mix method up to 150-ft deep and conventional long-stick up to 85-ft deep); seepage berm; and adjacent levee. The seepage cut-off wall must be constructed adjacent to an active overhead electrical distribution line, representing an important constructability detail. Other improvements are required to accommodate the levee improvements. Those other improvements include, but are not necessarily limited to, demolition of structures; a land-side patrol road; re-location of overhead and underground electrical and communications utilities; re-location of natural gas utilities; re-location of water, sewer, septic, and storm-drainage utilities; and demolition and re-construction of Garden Highway and other public roads. There is existing development along the entire Reach, with suburban-density residences and businesses on both the land-side and water-side. On the land-side, the project could require the acquisition of as many as a dozen residences and the removal of over 1000 trees. On the water-side, the project's impact to traffic and duration of construction could drastically impact not just local residents access to their homes but also impact existing businesses including four restaurants, two marinas, a government agency, a non-profit organization, healthcare services, professional corporations, and Sacramento County's Drowning Accident Rescue Team facility. In addition, utility lines both along and across the levee need to be re-located. There are also three stormwater drainage pumping plants with pipes that cross the existing levee. Finally, there are regional utilities that cross the Reach, including a PG&E overhead electrical transmission line; a PG&E underground natural gas transmission line; a regional sewage transmission force main; and Interstate 80. The Government anticipates that the bulk of the construction of this project, from Notice to Proceed to Construction complete and contractor de-mobilization, will require two years, and perhaps three. Please note that, while construction will inevitably cause some disruption of nearby residents and businesses, the Government wishes to minimize disruption as much as reasonably possible. Accordingly, the winning contractor will be expected to provide traffic control and detours; temporary utilities to minimize impacts during construction; restrict construction operations to spatially-limited, i.e very small, construction areas (especially in residential areas); restrict construction to all appropriate seasonal, weekly, and daily construction windows; and implement best-practice mitigations for noise, light, dust, vibration, and other construction impacts. The project's 65% plans, as well as specific feedback requests regarding construction capabilities and methods are attached for your review. Answers to the feedback requests as well as other comments on the constructability aspects of the plans and specifications will be considered. Comments can be submitted to Projnet, please see further information below. Please submit feedback and any comments by Thursday, April 9, 2020. Please note that the Government will neither answer questions about the project, nor respond to your comments; we are tapping your expertise to improve the design and construction of this vital flood risk-reduction project. Due to the Coronavirus the Government is currently assessing when Industry Day will take place and how it will be conducted. Therefore, a subsequent notice will be posted with additional information. Technical questions/comments are to be submitted via Bidder Inquiry in ProjNet at https://www.projnet.org/projnet. 1. To submit and review questions, contractors will need to be a current registered user or self-register into the system. To self-register go to the aforementioned web page and click on the QUICK ADD link. Select agency as USACE, and enter the Bidder Inquiry Key for this notice listed below, your e-mail address, and then click continue. Fill in all required information and click Add User. 2. From this page you may view all questions or add an inquiry. 3. Contractors will receive an acknowledgement of their question via e-mail 4. The Notice number is: W91238-20-S-0020 The Bidder Inquiry Key is: 9T9FI4-F4SZ8N The Bidder Inquiry System will be unavailable for new inquiries/comments after 9 April 2020. AMENDMENT 1: There will be two virtual sessions for the Industry Day that will be held via Cisco Webex meetings. The first session will be a group presentation on Thursday March 26, 2020 at 9:00 a.m. If you would like to attend the first session please send an e-mail to contact@example.gov by March 24th at 2pm. We will provide the link to the webinar and a copy of the presentation in our response e-mail. We respectfully recommend that, wherever possible, people in the same company gather together in the same room and share the presentation via a single connection to the webinar. We will hold a trial run of the Webex on Wednesday March 25th at 2pm. The Webex will be open for 30 minutes. This will be opened up in an effort to make sure everyone has the necessary capabilities on their systems for access. The second session will be a one-on-one Cisco Webex webinar, perhaps with video connection, with individual interested parties. In these one-on-one webinars, USACE will solicit comments on generally the same feedback requests that are attached to this notice. If you would like to attend the second session please send an e-mail to contact@example.gov by April 9th at 10am. We will provide dates, times, and a link to the webinar in our response e-mail.