Camp Pendleton

• Design/Build Construction
• General Construction
• Demolition
• Mechanical
• Waterline Construction
• Repairs/Renovations

The Santa Margarita Waterline Repair Phase II project was a Design-Build project awarded through NAVFAC Southwest for the design and construction for the replacement of deteriorated 14” Cement-Mortar Lined & Coated (CML&C) steel water distribution pipeline required to convey treated water from IM plant (Bldg 22036) to connection point at Well 2201.

The project required the pipeline to either be repaired or replaced, the current line ran underground between the IM plant and well site, the route was under Vandergrift Blvd. (the main thoroughfare for MCAS Camp Pendleton) and under the Santa Margarita River. The project team evaluated the available as-built drawings, geotechnical reports, current pipeline conditions, and possible solutions. Based on this research the project team commenced the design for a horizontal boring project that would have the least impact to the roadway and environmental concerns such as vegetation and endangered species. The project drawings were completed utilizing the existing GIS data from the base, field surveys, potholing, and mark out services.

Per the approved project schedule the project team met with the contracting agency, the public works department, and the end user to review the 50% drawings for the project. This meeting resulted in minor changes to the plans and clarification of the schedule. The final 100% drawings were completed and approved for construction.

As part of the submittal process, a site specific Quality Assurance Plan/Quality Control Plan (QA/QC) was submitted and approved. The plan identified the projects Definable Features of Work, in which each feature had a preparatory, initial and follow up meeting to ensure the QA/QC Plan was executed.

The initial step was to mobilize to the site and begin the preparation of the entry and exit points for the boring, this included having a biologist on board to review the environmental plan and an impact to the vegetation or wildlife. The Storm Water Prevention Pollution Plan (SWPPP) was implemented for the entry and exit locations and appropriate safety measures were installed. The site was inspected and approved by the government, then the excavation of the dewatering hole, as well as, the entry and exit pits commenced.

The project commenced in September of 2008 during the rainy season in San Diego and caused delays due to unsafe working conditions. The horizontal boring began on schedule and went very smoothly. The soil conditions were favorable and the pilot hole exit point was less than 10 feet off the target. This is excellent accuracy for a 1600 linear foot horizontal blind bore. The ream hole followed and finally the pipe was fused and pulled through the bore hole. The pipe was then chlorinated and tested prior to final connections being made.

After final inspection and testing of the pipe the entry and exit sites were prepared for close out. The sites were inspected and hydro seed was applied to disturbed areas.

Due to weather and shutdown delays, the contract completed nearly 30 Days after the original schedule and without any modifications and/or recordable incidents. Marine Corps, Army, and Navy activities were not impacted through close coordination with the Contracting Office (CO), Public Works, Health & Safety, and all other Stakeholders.

ALLIED created a site specific Accident Prevention Plan (APP) to follow EM-385-1-1. The plan identified a full time Site Health and Safety Officer (SHSO) to be on site during all operations. The SHSO was responsible for the implementation of the APP, conduct weekly safety meetings with both internal and subcontractor personnel and document the training performed onsite.

This project had a number of hazardous tasks. Due to high traffic levels on Vandergrift Blvd., a traffic control plan was developed, additional safety concerns were identified with the use of heavy equipment, and a confined space entry plan was developed for entering the boring pits. All of the tasks had an Activity Hazard Analysis (AHA) written to evaluate the hazards involved with each activity and ensure the personnel were fully aware of the work and hazards.