1111 CRAFTSMAN WAY 2016-01-01 MF Import

( ( � STORM AND SURFACE WATER � � 3. Connections ro a pipe system shall be made only at catch basins or manholes. No wyes or tees are allo�ved except on roof, footing, or yard drain systems on pipes 8 inches in diameter or less, with clean- ' outs upstream of each wye or tee. 4. 6 inches minimum vertical and 3 feet minimum horizontal clearance (between outside surfaces) shall be provided between storm drain pipes and other utility pipes and conduits. 5. Any closed stonn drainage system collecting runoff from paved areas in the public right-of-way or private property shall prov�de for floatable material separation (see Standard Plan No. 410) prior to discharge to the main storm drainage system in the public right-of-way, unless othenvise approved by the City engineer. 6. All PVC connections ro catch basins or manholes shall be made by grouting in an approved manholc adapter into wl•,ich the PVC pipe is inserted. 7. Activities such as trench excavation, tunneling or boring, pipe embedment, backfilling, compaction, safety and pavement patching, whether for public or private uulities, shall conform to the requirements set forth in other Sections of these Standards. For all the above, except pavement patching, see Section 3-9 Underground Utilities and Standard Plan Nos. 610, G11 and 615. For pavement patching see Section 3-14 and St�ndard Plan No. 316. � 4-2.3(5) I'RANIES/LIDS/GRAT�S/COV�RS ( 1. In general, frames and grates shall be furnished and installed per Standard Plan Nos. 405 through 409. � 2. The cover or grating of a manhole or catch basin shall not be �routed to final grade until the final i elevation of the pavement, gutter, ditch, or sidewalk in which it �s to be placed has been established, and until permission diereafter is givcn by the City inspector to grout the cover or grating in place. l , 3. Lids, grates, and covers shall be seated properly to prevent rocking. i 4. All catch basins and manholes in unpaved areas shall be equipped with locking frames and lids or � grates per Standard Plan Nos. 405 or 607. � 5. All Type II catch basins and all manholes with catches shall be suppiied with locl:ing ]ids or grates per standard plan No. 405. 6. Type II catch basins nnd manholes functioning exclusively as access structures shail be equipped with round 24 inch covers and frames per Standard Plan No. 607. 7. Roun] lids on all storm drain structures shall have "Drain" cast into the lid. 3. In conditions �vhcn the effectiveness of a not�nal grate installation would be limited, an open curb face frame and �rate shall be fumished and installed per Standard Plan Nos. 403 and d09. These conditions include hig�i lil:elihood of clogging from leaf fall, especially in sag verticnl curves; when the inlet is a surface drainage end point, such as a cul-de-sac; and when nonnal mlet grates may be passed over due to the road grade. The use of open curU face frame and grates must be approved by the City engineer. �1-2.3(G) It�S'CRICTOR DGVIC�S L The minimum orifice size diameter allowed for use in the City of Everett is one inch. 3. Restrictor dcvices shall be constnicted and inst:ille� in accordance �vith Standard Plan numbers �l12A l�ll'OII��I ��C. � 57'ANDA RDS a.J '' � Itcv.J/02 I I �