DeKalb County, GA, April 25, 2017 – by Renee Turner for The Post – DeKalb County Department of Watershed Management (DCDWM) is seeking contractor for ITB No. 17-100821 for Water Filter Removal, Repair, Replacement, and Maintenance at Scott Chandler Water Filter Plant (SCWFP).
According the DCDWM web page, the original plant was constructed in 1942 and a new plant in 2007, located at 4830 Winters Chapel Road, Atlanta, Georgia 30360 (in Doraville). SCWFP treats up to 150 million gallons of water per day with 70 to 100 million gallons pumped from the Chattahoochee River.
DCDWM is soliciting bids for a 120-day contract for the removal, repair, replacement and maintenance of its SCWFP water treatment filters. According to the Invitation to Bid, there are currently twelve water filters at the plant with two of the water filters out of service. The project requires turn-key services with Scope of Work minimum specifications requiring:
- Remove water filters and related parts
- Remove water filter media
- Inspect water filters for damage
- Repair and replace water filters and related parts
- Replace water filter media
While operational needs taking priority over contractor’s work, Scope of Services include:
- Re-installation of filter underdrain and media to Filter 1-A of SCWFP and evaluation and potential replacement and re-installation of filter undrain and media for Filter 1-B;
- Removal and re-installation of filter underdrain and media to Filter 11-A and evaluation and potential replacement and re-installation of filter undrain and media for Filter 11-B,
- Addition of granular activated carbon (GAC) to remaining Filter 2-10 and 12; and,
- Work must be completed with 90 days provided GAC is available.
SCWFP Filter 1-A and 11-A: requiring (1) testing each anchor point (2) contractor’s manufacturer’s technical representative visit project site confirming proper assembly and installation (3) re-installation of existing filter underdrain (4) Plant Operations personnel to perform full backwash of filter 1-A testing the integrity of underdrain (5) furnishing and installing layers of filter gravel and sand levels (6) conduct two backwashes and two skimming processes to remove fines from sand surface (7) once installation, backwashing and skimming of the filter media is completed; disinfection of material for a 24-hour time period (8) furnishing and installation of GAC (9) gravel ½ inch or smaller and GAC must be transported into filter via a inductor provided by contractor (10) SCWFP provides water connection. (11) Note: It will not be possible to completely drain a filter through normal means without compromising water quality.
SCWFP Filter 1-B and 11-B: requiring (1) removal of existing filter media (gravel, sand, and GAC) from filter (2) inspection of filter underdrain according to manufacture specification.
SCWFP GAC to Remaining Filters 2-10 and 12: requiring (1) furnishing and installation of GAC (2) GAC quantity and filter cell measured requirement (2) GAC specifications, properties, data documents demonstrating successful application in municipal drinking water plants inclusive of turbidity and organic contamination removal.
The contractor is responsible for furnishing and installing any necessary temporary safety and accessibility handrails and decking including areas over the existing backwash gullet.
Pre-Bid Conference and Site Visit: The pre-bid conference and site visit is on May 10, 2017 at 10:00 AM at the Scott Candler Water Filter Plant, 4830 Winters Chapel Road, Atlanta, Georgia 30360 (with Mandatory LSBE Contact Meeting on April 19th and 26th, and May 3rd to be attended by prime contractors within two weeks of advertised solicitation in person or via video conference.)
Deadline for submission of questions or clarification is by 5PM on May 15th in writing to Vearnetta Rivers, Procurement Agent Senior via email email@example.com or general inquiries or interpretation of ITB by telephone (404) 371-2936.
Bid submission deadline and bid opening is May 25, 2017 by 3:00 PM.