Inquiry (采购产品): Sound wall for residence An oil company has started up pumping and water disposal pumps that are very noisy and refuse to mitigate. Before we sue, we wanted to know if your sound wall panels would be effective at our property line which is approx 500' from the noise source. Thanks you **** Hidden Message ***** Janet Stockton 93314 USA Company: residential E-mail: j-stockton@sbcglobal.net **** Hidden Message ***** j-stockton@sbcglobal.net