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`. ` <br /> ��U�~ <br /> � <br /> ""■ •� // r /^�^ - 4. ~ P <br /> li � <br /> ���� . <br /> ` `1 ` <br /> - _ _ -- _ <br /> 412'776-3600 <br /> �9� �� P 414 - <br /> =_^ _-~` <br /> . <br /> tf� <br /> �- ' <br /> '�~~ <br /> ,`H|UP R. BERGER S. ASSOCIATES, INC. / BOX 193 / BRAOR]ROVVOOO8. PA. 15015 <br /> BLASTING SEISMOLOGY/GEOLOGY/GEOPHYSICS <br /> October 1 , 1981 ^ <br /> Hr. Paxton Bedham ' <br /> American Stone Company <br /> P. O, Box 720 <br /> Greensboro, NC 27402 <br /> �/*^ <br /> Dear Mr. Dadham: 4y*� <br /> ^, <br /> Thiu letter is in response to your inquiry ber 30, 1981 regarding whether <br /> American Stone's quarrying operations in Gpet.nore, can meet the following Orange <br /> County zoning requirements at the company's property line: <br /> 1) 68 dBA steady state sound pressure level <br /> 2) 125 dBA nirblast <br /> 3) one inch per second steady state ground vibration <br /> 4) two inches per second peak particle velocity <br /> Given the distance between the property line and quarrying operations, as well as <br /> the details of your blasting program which you outlined over the phone, we are <br /> extremely confident that American Stone Company can meet the above standards at <br /> the company's property line while maintaining an adequate level of operatinn' <br /> If we can be of additional service on this or on other matters, please don't <br /> hesitate to call' <br /> Very truly yours, <br /> PHILIP R. BERGER & ASSOCIATES, INC. <br /> 0 <br /> �^. /.-� <br /> / ~4-`.,- <br /> D. <br /> T. Froedge <br /> Executive Vice President ■ <br /> DTF/rs. <br /> ' <br /> - <br /> ' <br /> � <br /> . <br /> PITTSBURGH BOSTON MIAMI CANADA <br /> ___ ____- - ' - - <br />