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1. 

   Trefz William PE - William J Trefz Consulting EngineersEngineer

   Website

   Website: wtrefz.com

   Phone: (215) 442-9480

   Cross Streets: Near the intersection of Dresher Rd and Witmer Rd

   Closed Now

   • Sat

     Closed

   • Sun

     Closed

   • Mon

     7:30 AM

     6:00 PM

   • Tue

     7:30 AM

     6:00 PM

   • Wed

     7:30 AM

     6:00 PM

   • Thu

     7:30 AM

     6:00 PM

   • Fri

     7:30 AM

     6:00 PM

   • Sat

     Closed

   601 Dresher Rd, #275 Horsham, PA 19044 415.28 mi

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