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<br /> <br />Section 00508.0 Page 2 of 2 September 12, 2012 <br />TIMBER WALL FACING Revision 1 <br /> <br />S:\Projects\1125G Squaw Gulch Valley Leach Facililty Design\I - Tech Specs\00508.r1.doc <br />minimum retention of 0.6 lb/ft3 or <br />ii. Copper naphthenate meeting AWPA P-8 using AWPA P-9 type A solvent <br />containing a minimum of 2% copper metal to a net retention of 0.075 lb/ft3. <br />c. Structural steel shall meet AASHTO M270 Grade 50W and shall be galvanized according to <br />ASTM A153. <br />d. All bolts, lag screws, dowels and spikes shall conform to ASTM A307 and shall be <br />galvanized according to ASTM A153. <br /> <br /> *** END OF SECTION ***