Engineering Design & Construction Supervision Program Monthly Progress Report – April 2018

The program is implemented by Tetra Tech under the Indefinite Quantity Contract for Global Architecture and Engineering (A-E) Infrastructure Services Contract No. EDH-I-00-08-00027. The Caracol EKAM New Housing Settlement was built between October 2011 and October 2013 to provide housing for households impacted by the 2010 earthquake and other critical groups in the Northern Corridor. However, in March 2014, USAID became aware of deficiencies in both the housing and civil construction, including design and performance issues such as leaking roofs, missing or sub-specification roof fasteners, and substandard concrete reinforcement in wall construction. In October 2014, USAID contracted Tetra Tech to provide independent Architectural and Engineering (A-E) and construction management services to inspect the EKAM site, provide A-E recommendations, manage and supervise remedial works, and provide support to USAID for contractual adjustments. Tetra Tech has been providing on-site quality assurance services, assessment of project documentation, and reviews of monthly pay applications and change orders as it relates to project progress. During the reporting period, Tetra Tech continued to provide on-site construction progress monitoring services for USAID, community liaison services, and led weekly meetings with DFS and USAID, distributing minutes. On April 11, 2018, Tetra Tech submitted the final road designs to USAID, and on April 28, 2018, Tetra Tech met with the CMC to give a presentation of the current project progress, which was well received. At the Caracol EKAM site, DFS has completed the work associated with their scope through Modification #6, with exceptions and comments noted below. The review of the closeout documentation for the sanitary system will coincide with the completion of the work in Modification #7. Modification #7 work started in December and continues, with progress noted below. Flood Mitigation: The 5' wide concrete swale along platforms P-46 to P-48 is complete, and DFS is using the balance of this line item to install a concrete swale along platforms P-56 and P-57. This work is complete, and the remaining swale work is being completed at platform P-6 and is underway. Installation of the grouted rip rap at the end of the channels leading to the secondary canal is completed at B5-41, and the remaining section along B6-39 was not required and will be used at the primary channel. This work is complete. Sewage and Sanitary System: The pumping of all septic tanks is ongoing, and the replacement of 77 large septic tanks with 1500-gallon plastic prefabricated tanks is complete at all platforms except for the installation of a single baffle at P57 and the installation of the additional manhole risers. The baffle and risers are in transit to the site and should be installed by the middle of May. Note that the B platform tanks were not replaced with plastic tanks due to site constraints, and these tanks have all been rehabilitated with the installation of access ports and T's. All B platform tanks have been tied into the sanitary system. The demolition of 64 small septic tanks in place and installation of bypass piping is complete, and the repair/replacement of access ports is ongoing. The installation of excess materials from the road work to the platforms and sloping to drain will take place in conjunction with the regrading of the secondary roads, which has begun in Phase 2. The improvement of the offsite intersection of the secondary and primary channels by installing a 20' wide grouted rip rap channel is complete, and the stabilization of offsite drainage by regrading and installing Vetiver grass will follow the channel work at the primary and secondary channels, which is substantially complete.