Dale City VFD was planned by the owner and design team to achieve silver certification under LEED NC 2.2. Through the efforts of Jack Bays, Inc in achieving higher percentages in MR 4.1 Recycled Content, MR4.2 Regional Materials and exemplary performance points in MR 2.1-2 Construction Waste Management the project achieved enough points to receive gold certification.
Prior to bidding the project, Jack Bays, Inc. prepared a detailed explanation of the LEED process and a summary of the requirements for each credit, and distributed this information to all subcontractors bidding the project. The description included the goals for the project as well as the documentation that would be needed so all subcontractors had a clear understanding of the requirements.
Early on in the process, the construction waste management plan was developed utilizing a two-step recycling process. The first step or source separation occurred on site with presorting into separate roll-off containers; one each for metal, concrete and general debris. A fenced area with clear signage was provided identifying which containers were to be utilized. The process was carefully managed on site by the project superintendent. The material was then transported to NOVA Waste recycling center for further segregation of wood, metal, cardboard, concrete, drywall and plastic and determination of the relative weights of each. With this process Jack Bays, Inc. was able to divert over 97% of the construction waste from landfills earning one additional exemplary performance point over and above the two points earned under MR 4.1 and 4.2 for diverting up to 75%.
In conjunction with the waste management plan the Construction Indoor Air Quality (IAQ) management plan (EQ 3.1) was developed. The plan consisted of four phases. Phase 1 - Prior to close-in included procedures for control of spills or seepage of contaminants into concrete and use of adhesives, sealants, paints and coatings, which meet VOC limits for EQ 4.1-2. Phase 2 – Point source contamination after close-in dealt with outgassing of building materials and control of the delivery and storage of absorptive materials to avoid contamination. Phase 3 – HVAC protection provided guidelines for prevention of contamination of the mechanical systems and ductwork through the use of shrink wrap, MERV 8 filters, controlling the of hours of system operation and sealing off of finished areas. And finally, Phase 4 – Clean-up and flush out which included specifications for the use of HEPA vacuums, installation of MERV 13 filters and final air quality testing.
Under the Material and Resources category of LEED 2.2 Jack Bays, Inc. collected documentation and set up a binder and spread sheet to tabulate data to substantiate compliance with Recycled Content (MR4.1-2) and Regional Materials (MR 5.1-2). A second binder was assembled to collect information regarding Low-emitting materials including adhesives (EQ 4.1), Paint (EQ 4.2), Carpet (EQ 4.3), and Wood (EQ 4.4).
In addition nearly all of the wood in the project was FSC certified earning full credit under Certified Wood (MR 7) with another possible exemplary point for achieving 95%. The collected data was transmitted electronically to the field for use by the superintendent in verifying that only approved and compliant materials were being used on the project. The information was then uploaded to the LEED template for each respective credit.
Other areas requiring coordination with the design team, project LEED AP and Commissioning Authority (CxA) included maintenance of erosion and sedimentation controls (SP p1), fundamental and enhanced commissioning of all mechanical, and electrical systems (EA p1 and EA 3), Construction IAQ prior to occupancy (EQ3.2) and Innovation in Design (ID 1.1-4) for exemplary performance in multiple construction categories.
Throughout the entire process, documentation in the form of daily inspection reports, digital photographs and electronic submittals from subcontractors and suppliers was utilized to verify compliance and help the project exceed the original goals.
The overall LEED efforts of Jack Bays, Inc are managed by R. Curt Nette, LEED AP.