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ET� ERICeH �O�. TIETZE AND ASSOCIATES, INC. <br /> �.��s <br /> 721 5th Avenue Suite 205 Edmonds, WA g8020 206-771-6272 FAX 206-775-0236 <br /> �.CiOta04 Wj[Cj18I � <br /> City of Everett ��p[cmber 22, 1992 <br /> 320�Cedar Street <br /> Everett,WA 98?A1 <br /> Subjech Revisions to Civil Plans for Abbot[42-Uni[Apartments,Silver Lake <br /> Dear Gordon: <br /> Please fmd enclosed with this letter, <br /> "Red line"markups with attached comment s6eets from Jane Zimmerman <br /> ' Four sets of revised plans <br /> Calcula6ons for wet pond sizing and oil/water sepazator <br /> The following revisions have been made as requested: <br /> Sheet 1,Temporary Erosion Control Plan has had a tcmpurary fence added azound the pond <br /> and a revised note requiring approval of the erosion convol system by the citys inspector. <br /> � <br /> Sheet 2, Grading and Drainage Plan has added a steel sleeve to the PVC pipe from CB #5 <br /> ; where it crosses under the rockery. The flow control structure has had the orifice changed to a 1-inch <br /> diameter. The oritice change resulted in slight rooditications to the wet pond size. The dimensions of <br /> ; the pond are shown on the plan. The wet pond sizing cal¢ulafions aze attached to this letter. In <br /> addition,the calculations for the oil/water sepazator to t6e wet pond are also attached, 'I'he was}�ing <br /> �� st� hA� },P � r ' .+„a���„f�er, thus the_plans have been_modifie�tnsetlecc�}���g p <br /> covenant prolribiling car washing and maintenance will ye provided by the owner. <br /> . �� �`� <br /> � Sheet 3,Water Plan:no revisions v !'"�z Ha'� c�- <br /> •, �w� n �Ha^ <br /> C Sheet 4,Sewer Plan:no revisions � <br /> ` Sheet 5, Miscellaneous has been changed to retlect the wet pond changes. Detail 47AB was <br /> changed and wet pond construction notes have been added. The desip� overtlow rate from CB # 6 <br /> ihas been chauged to 0.14 cfs to retlect the appropriate 2-yeaz tlow, The orifice was changed to 2.25 <br /> inches from 2.75 inches. The oil/water separator for the wet pond was revised to reflect a flow rate o( <br /> , 0.29 cfs and storage volume of 261 cf as calculated in the attached. <br /> The owner will have the wet pond construction notes attached to [he landscape plan. A copy of the <br /> landscape plan and[he covenan[s referenced above will be provided sepaza[ely by the owner. <br /> �/ /�.C¢ct.r� hv rs�u slr-rm p/a n s c�+-� <br /> o � ;f � o ; � D� !�. 5 : �,,,��,,. <br /> _ ,_ _ _ -__ <br /> [� �SEP L� �S;E r.. �ry�za � � <br /> �fldy. M> . .... �� ,�,t� � 9 /2L�-/9 Z <br />