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•l._ti 1 t i rl .J�._.:�r-l4 1 ._ir r'. 'm L' ^.i r 1 •.l44'__ ®..-.._-_.... ,.-_-.__ .. --•.�..-�wo.' .__-._ _ _ "-__ ... <br /> PW <br /> msultants, <br /> ktv+ <br /> January 10, 1991 <br /> Charlie Nichols <br /> CORPS OF ENGINEERS <br /> Sacramento District <br /> 650 Capitol Mall <br /> Sacramento, CA 95814 <br /> Dear Charlie .- <br /> SUBJECT: <br /> harliesSUBJECT: SHARPE ARMY DEPOT WASH FACILITY <br /> We've spoken with Charlie Hunt at the County Environmental Health Dept, and <br /> he indicated that if the waste oil sump was part of the oil -water separator, <br /> it could be single wall concrete -construction, same as the oil-water <br /> separator We contacted M. C. Nottingham and verified that this can be done <br /> - it can. The attached drawing shows how this is to be aCComplished. <br /> Basically, another compartment is added to the end of the separator. This <br /> would be Nottingham's Model 8041 sand trap unit. This unit has two <br /> compartments, one will act as the sample box and the other will act as the <br /> waste oil sump. This would eliminate the waste oil sump, sample box, and (2) <br /> 2" double wail under ground gravity oil draw-off pipes shown on details <br /> 2-MI -Ml and 3�M1 -hit of the drawings. The 2" waste oil pump suction line will <br /> draw from the new waste oil sump compartment the same as before. Since this <br /> line is above ground and now routes over to the front end of the separator, <br /> we recommend extending the 12" tall containment curb around it and adding a <br /> couple of bollards to protect the curb, refer to drawing A2. Tf this IS <br /> unacceptable in that it will block thru-traffic behind the building, we would <br /> recommend running the 2" pump suction line underground (double wall pipe) <br /> over to the waste oil sump, keeping the line as Shallow as possible and <br /> connecting into the side of the sump above the oil level in the sump, then <br /> elbowing down to the foot valve in the bottom of the sump. <br /> Please note that the sample box and waste oil Sump Covers need to be traffic <br /> duty (H-20) if not located Inside the containment Curb. On the original <br /> drawings, the sample box cover was H-20 but not the oil sump cover becausa it <br /> was inside the containment curb. <br /> 7300 Folsom Boulevard Rptert J.Alessi. M E F George Wolf <br /> Sacramento, California 9582$ Lowell E. Shields, KE, John Licnakis, M,E. <br /> 916 386-8888 Enno Ennes Thomas A. Duval,M.E. <br /> ratX 386-2610 Robert L. Kelly Rob®rt 0, K66tstrar M.E. <br /> A 01 71 1 <br />