LAKEHAVEN WATER & SEWER DISTRICT - WATER PLAN REVIEW CHECKLIST

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1 Does the plan(s) have a signed & dated PE 1 W/S.2.A(7) stamp? Proposed water main line pipe diameter(s) 2 SEPA greater than 12-inch? 3 PLAN REVIEW GENERAL INFORMATION Any project work shown within existing public ROW? 4 Any project work shown within existing or proposed "City of Des Moines" public ROW? W/S.2.A, W.2.B Is the proposed plan consistent with previous Lakehaven comments? Has Lakehaven received, for review, all the required or associated right-of-way improvement, landscape, land use &/or other related plans? Is there sufficient information available to determine the existing water and/or sewer pipe materials, sizes, and locations? DRAFTING STANDARDS Have all of Lakehaven's published, applicable Drafting Standards been met? Is Project Name, Lakehaven Project No., and Owner & Developer (if different than property owner(s)) names & addresses on the cover/first sheet in the plan set? Is the Project Name & Lakehaven Project No. shown on all plan sheets? Lakehaven Plan Approval Block (typ. 4 wide x 3½ high) included in the upper right-hand corner (not including title bar/area if on right side of plan sheet) of each water plan sheet? 11 W/S.2.A(6) 12A 12B 12C 13 PDF copy available upon request from Lakehaven. Does plan(s) identify the benchmark utilized and the vertical datum as National Geodetic Vertical Datum (NGVD-29, or KCAS which is equivalent)? Required - Are State Plane Coordinates (Northings/Eastings) utilized for horizontal control W.2.B(2) & water main fitting locations, at points of connection to Lakehaven's existing water system &/or other offsite locations? Required - Are either State Plane Coordinates W.2.B(2) (Northings/Eastings) or Stationing utilized for all onsite water main fitting locations? Optional (Lakehaven preferred) - Are State Plane Coordinates utilized, or included, for all water W.2.B(2) main fitting locations? NOTE: This information will be required on the record drawings. Is proposed water main dimensioned to property lines, ROW lines, or another utility or structure, at valve clusters &/or in other key or typical locations, to set minimum separations, etc.? PR Checklist-Water-2019.xlsx (Form Update 12/31/18) PAGE 1 OF 8

2 14 W/S.2.A(8) PLAN REVIEW Is the line work for proposed water facilities the most bold line work on the plans? Is the line work for existing water facilities proposed to remain "active" labeled ( W, WTR, or WATER ) and shown with dashed lines? 15 Is the line work for existing water facilities proposed to be abandoned by removal labeled ( REM/W, REM/WTR, or REM/WATER ) and shown with dashed lines? Is the line work for existing water facilities proposed to be abandoned in-place (out-ofservice) labeled ( OOS/W, OOS/WTR, or OOS/WATER ) and shown with dashed lines? 16 Is a Key Map (inset) included on each plan sheet, for multiple-sheet plans? Is a general note provided on the plan to disclose 17 source of information used for determining existing utility locations (e.g., field survey, existing record drawings, etc.)? 18 W/S.2.A(8) Proposed utility facilities/ other infrastructure (e.g., storm drain, sewer, telecommunications, gas, power, if available) shown and identified on the plans? 19 Is all underground utilities crossing info [upper utility = pipe bottom (NOT I.E.; lower utility = pipe top (NOT crown)] shown in either the Profile View &/or a table format? 20 W/S.2.A(8) Are the 10-digit tax parcel numbers and/or lotblock-plat names shown for all adjacent properties? 21 Are typical right-of-way section detail(s) provided to indicate typical locations of pipelines, water service terminations, ROW names, ROW dimensions, ROW centerlines/margins, etc.? (Not required on private property areas that are not road/driveway areas) W.2.B(4) 26 W.2.B(3), W.2.B(4) Is the existing water data referenced correctly on the plans [Construction Record Drawing (CRD) No. (W-###), pipe diameter and material, etc.? Are match lines placed at major fittings, for multiple-sheet plan sets? Water main pipe call-out requirements (length, diameter, and material / class [center center of major fittings]) met? If pipeline deflection is proposed for alignment changes, is pipeline curve data (R, L,, P.C., P.T., P.I., etc.) included at such locations? Fitting/Valve call-out requirements (size, end connections, etc.) met? Are topographic 2' contours shown (5' contours may be allowed upon review)? Are contour elevation markers shown at least every 10 feet? PR Checklist-Water-2019.xlsx (Form Update 12/31/18) PAGE 2 OF 8

3 PLAN REVIEW Is Lakehaven's Standard Note for Water Construction shown on all plan sheets? 27 W.2.B(7) W.2.B(8) 30 W.2.B(9) 31 W.3.D(2) 32 W.3.E(1) "This project shall be constructed in accordance with Lakehaven Water & Sewer District 'Water System and Sewer System Standards' approved by the Washington State Department of Health on June 8, 1994 and any addenda thereto." If construction in ROW is necessary, add the following note to the plans: "Acceptable construction methods and/or ROW restoration requirements for work performed in ROW are defined by the [FILL-IN AGENCY NAME(S)] and may NOT be shown on the plans approved for construction. Consult with Lakehaven s project inspector and any applicable ROW permit for acceptable construction methods (open trench, bore & case, directional drill, etc.) and extent of asphalt overlay &/or other restoration requirements for work in ROW." Are the distances from the point-of-connection to nearest existing valves (both sides), to nearest hydrant, and to nearest right-of-way intersection shown? Is private water piping/facilities/devices beyond meters/vaults/enclosures either omitted OR if shown clearly identified & distinguished as private? DESIGN STANDARDS Gross static pressure estimates provided for the project as a whole, based upon high and low ground elevations and appropriate high and low system heads within the applicable pressure zone? Are the lengths, sizes, materials/classes, extent, routes and scope of the proposed water system improvements acceptable, including extend-tofar-edge? Does the proposed design meet Lakehaven's water main pipe typical standards? 33 W.3.E(1), W.3.E(2), W.3.E(3) Diameter = 8. Material = DI (all sizes). Class = minimum 52 (all sizes, effective Aug 2015). Cover = minimum 3 or 12 above top of valve operating nut. 34 W.3.E(2) (CALL-OUT NOTE: A typical note may be used on each plan sheet to indicate "typical" diameter, material, class &/or cover "unless otherwise noted") Are the types, sizes, end connections, and configuration of fittings shown appropriate for the proposed water system improvements? Fittings & valves grouped & flanged together to extent practicable? PR Checklist-Water-2019.xlsx (Form Update 12/31/18) PAGE 3 OF 8

4 35 W.3.E(3) 36 W.3.E(5), W.3.E(7) PLAN REVIEW Are water mains absent in ingress / egress easements providing vehicular access to four (4) or fewer interior lots, with water service connections located at beginning of easement? Do either of the following conditions exist: Steep pipe slope conditions (>20%)? Unstable (e.g., fill) soil conditions? Does water main alignment within ROW &/or driveways meet the following typical standards? 37 W.3.E(3) North / East sides. 6 from face of curb. Under ROW/driveway pavement. NOT within ROW drainage ditch area(s), except perpendicular crossings. If within City of Des Moines, 10 North / East of ROW centerline. Is there any water pipe shown: 38 W.3.E(3) Within a drainage detention pond area? Within a Native Growth Protection Easement? Within wetlands &/or other sensitive areas? Is there any water pipe shown: 39 W.3.E(3) Under rockeries or retaining walls? Between buildings that are less than 25' apart? Are the standard minimum separations between water & sewer main lines shown & indicated? 40 W.3.E(4) Water ABOVE sewer. Horizontal 10, measured edge to edge. Vertical 18, measured edge to edge. If standard minimum separations are not met, does engineer indicate why & are the less-thanminimum dimensions indicated? Are the following standard minimum separations between water & non-sewer main lines/facilities shown & indicated? 41 W.3.E(4) 42 W.3.E(6) 43 W.3.E(7), W.3.E(8) Horizontal 3, measured edge to edge (> 5' if in City of Auburn). Vertical 6, measured edge to edge (> 12" if in City of Auburn). Has an acceptable type of connection method into the existing water system been identified on the plans? Have typical pipe joint restraint & blow-off assembly requirements been met? PR Checklist-Water-2019.xlsx (Form Update 12/31/18) PAGE 4 OF 8

5 44 45A 45B 45C PLAN REVIEW Water main/transmission easement width(s): 20 min. typical LUD "water & sewer" easement width indicated & identified, with easement boundaries offset 5 /15 from pipe centerline(s)? W/S.2.A(8) Water main/transmission easement & W.3.E(11) termination(s): 10-feet beyond pipeline terminus or terminal hydrant? W.3.F(1), W.3.F(3) W.3.F(1), W.3.F(3) W.3.F(1), W.3.F(3) 46 W.3.F(5) 47 W.3.G(2) Are applicable existing water easements shown & identified by County recording number? Are typical mainline valve requirements met? Max. 500' spacing in non-sfr areas. Max. 800' spacing in SFR areas. At Tees - two (2) valves. At Crosses - three (3) valves. Flanged to tee, cross, or other fitting (bend). Not in parking stalls, curbs, street gutters, drainage channels / courses or other low areas subject to flooding. Not in heavy tire traffic pattern of vehicles. Not in public sidewalks, unless no other feasible alternative exists. Valve box protective pads noted where required in non-paved areas? Valves provided at each side of all easements &/or major highway crossings? Are typical air-vacuum valve assembly requirements met? Crests >5' above adjacent low point/sag. Pipeline grade change >20%. Hydrant Approval-Uninc. King County: Has stamped/marked plan from the King County Fire Marshal (Renton, WA), indicating number, spacing & locations, been obtained by developer & submitted to Lakehaven? Lakehaven will directly coordinate review & approval of hydrants in all other areas with the appropriate fire marshal's office. PR Checklist-Water-2019.xlsx (Form Update 12/31/18) PAGE 5 OF 8

6 PLAN REVIEW Is all typical hydrant information shown & standards met? 48 W.3.G(3), W.G.3(4) Common property corners. Away from roadway intersections & turning radii. Behind sidewalk, center of barrel maximum 10' from face of curb / pavement edge & minimum 18" from back of sidewalk. No closer than 3' from the ROW margin, unless easement area is provided to gain a 3' clear & level area around the hydrant. 600' spacing in SFR areas. Non-SFR areas: hydrant(s) within 400' of all points of building(s), measured by vehicular travel way, unless otherwise approved by the fire marshal. Non-SFR areas: no closer than 50' from any building, unless otherwise approved by the fire marshal. No more than one (1) hydrant served by a deadend 8" water main. Hydrant Tee Thrust Blocking - NOT ALLOWED. Hydrant guard posts provided if not protected by vertical curb, traffic island, etc. If hydrants located within the City of Auburn: 49 There shall be a minimum 5' clearance around each hydrant. Hydrants shall have two (2) 2½ National Standard Thread (NS) hose ports & one (1) 4½ x5 Storz adapter & cap. Are typical hydrant easement requirements met? 50 W.G.3(6) 15' width. Easement boundaries offset 5'/10' from hydrant / pipe centerline. Termination 10' beyond hydrant barrel. Are existing hydrants proposed to be: "Reset". "Moved" "Reconnected" "Raised" 51 W.3.G(7) If the horizontal &/or vertical locations of any existing hydrants are disturbed by &/or during construction AND such hydrants do not meet current Lakehaven specifications, they will need to be removed, salvaged to Lakehaven & replaced with new hydrants. If specific locations unknown, place a general note on plans. PR Checklist-Water-2019.xlsx (Form Update 12/31/18) PAGE 6 OF 8

7 PLAN REVIEW Is a table showing the following typical service pressure information shown on the plan(s)? 52 Estimated meter elevations. High & low system head figures, provided by Lakehaven. Estimated high & low water service pressure(s) for each new/proposed water service connection. Identification of each service that has "high" pressure (<80 psi) & an individual PRV is indicated. CONTACT LOCAL BUILDING OFFICAL FOR REQUIREMENTS &/OR ADDITIONAL INFORMATION. Are typical water service connection requirements met? 53 All new/proposed buildings w/plumbing separately served (single service line & meter). Service line & meter sizing information shown on plan(s) or by separate report (Residential = UPC plumbing fixture counts; All Other = Owner Estimate of Max. & Min. GPM usage rates). Service line(s) & meter size(s) identified on the plan(s). Can use typical note(s) for plats, etc. Meters clustered wherever possible. Back (customer) side of meter box or vault at property line / ROW margin, or Lakehaven easement boundary. Meter location(s) conducive to efficient, routine periodic access by Lakehaven staff. Meters not in sidewalk, curb, parking stall, vehicular travel, or street gutter areas. Service line(s) perpendicular to water main. Separate service connection(s) for nonresidential irrigation use. Separate service connection(s) for nonresidential fire protection use. Separate service connection(s) for separate residential & non-residential uses in a mixed-use building. Method of service connection/line installation indicated (developer/contractor or Lakehaven). Are typical service connection easement requirements met? 54 W.3.H(8) 55 W.3.H(9) Width: same as for water main. Termination: back (customer) side of meter box or vault, except front (Lakehaven) side of fire protection service vaults. Are any existing service connections proposed to be: Relocated. Replaced. Reconnected. Removed. PR Checklist-Water-2019.xlsx (Form Update 12/31/18) PAGE 7 OF 8

8 56 PLAN REVIEW Are typical premise isolation requirements for new/proposed water service connections met for all: Non-Residential Domestic. Irrigation. Non-SFR Fire Protection. Call-out provided and directed to all service connections: 57 "Separate Water Service Connection Application Required to be Submitted to Lakehaven for Meter Installation & Full Service Activation." 58 Additional Information 59 Additional Information 60 Additional Information 61 Additional Information PR Checklist-Water-2019.xlsx (Form Update 12/31/18) PAGE 8 OF 8