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i <br />OUTLINE OF DRAINAGE DETENTION CALCULATIONS <br />SHAKEY'S PIAllA PARLOR (Continued) <br />7. DETENTION STORAGE Ic PROVP_?ED BY MEANS OF A DEPRESSION <br />IN THE PARKING LOT AREA. <br />8. THE DISCHARGE SYSTEM CONSISTS OF A 2 1/4 INCH ORIFICE <br />DISCHARING INTO AN EXISTING CATCH BASIN ON THE SITE. <br />9. DETAIL COMPUTATIONS ARE PROVIDED TO DETERMINE THE VOLUME <br />OF STORAGE REQUIRED :iND THE VOLUME OF STORAGE PROVIDED. THE <br />ORIFICE SIZE IS THE 2 1/4 INCH CITY OF EVERETT MINIMUM WITH A <br />DESIGN HEAD OF 3.25 FEET. ' <br />Page 2 of 2 <br />