Specifications include, but are not limited to: Cover 1. Cover to be made of ductile iron per ASTM A536 80-55-06 and meet the H20 (Heavy Duty) loading requirements set forth in AASTO M306. 2. The cover is to be 40 5/8" in diameter and 1 5/8# thick at the seating surface of the cover onto the frame. 3. All cover seating surfaces are to be machined. 4. The cover is to have a 4 7/8" wide hinge point under the cover directly across from the ductile iron locking arm, with the locking arm to be approximately 14 ½# long overall and have a ½" -13 stainless steel Pent head bolt and washer which is to be covered with a plastic debris cap. 5. The locking arm must secure the cover to the frame, allowing the cover to vent open 14 degrees from the side of the cover directly across from the cover hinge point during an event. 6. Above the hinge point on top of the cover there is to be a timing notch to fit a 3/8#-16 x 1# Stainless Steel locator bolt (locator bolt furnished by the manufacturer and installed by SMUD) to limit the covers rotation. 7. The cover shall have the SMUD specified cover pattern with SMUD lettering to be cast on the cover with 2 ¾" letters.