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Home My WebLink AboutSP-91-074 - 5+e a i I a e - F 1 � � 1 MT. OLI VET CEMETERY AND MAUSOLEUM March 16, 1992 Mr. Fred J. Kaufman Hearing Examiner City Of Renton 200 Mill Ave. South Renton, Wa. 98055 RE: ECF;SP-074-91 Dear Mr. Kaufman, This letter is to add Mt. Olivet Cemetery to the list of parties of record. This also is to make h record of our appearance at the public hearing of March 17, 1992. Until a decision is made by your department with respect to the above referenced application, Mt. Olivet has no further comments than those made to the City in writing and at the City's request and which would be included in the existing file. This letter is to preserve our appeal writes in this matter as a directly adjoining property owner, and as a party directly identified in the report to the hearing examiner, and potentially directly affected by certain of the ERC proposed zonditions. 077 — �l Cemetery, Mausoleum, Crematory and Gardens Box 547 0 100 Blaine Ave. N.E., Renton, WA 98057 0 (206) 255-0323 A.men*= Memoria( F.O. Box 547 • Renton. WA 98057 ToU Free 1-SM248-174 5 March 16, 1992 Kr. Fred J . Kaufman Hearing Emminer City Of Renton 200 Mill Ave. South Renton, Wa. 98055 RE: ECF;SP--074-91 Dear Mr. Xaufman, This letter is American Memorials formal notice of it's appearance at the public hearing to be held on the above referenced application made by Fiorillo Northwest Inc. (John McKenna). American Memorial is identified as an owner of record on page 2 of the preliminary report to the hearing examiner for the March 17, 1992 hearing. In so tar as American Memorial can't review or comment on those new Engineering Plans and or Designs that may be required of Fiorillo if the Hearing Examiner imposes those conditions required by the ERC as mitigating measures, until you have actually made your decision, and the engineering plans if required are produced for review and approval by the City, the intent of this letter is to preserve American Memorial services Inc.s' right to appeal if necessary your decision and further the right's of an (-mer of record to appeal if necessary the decisions approving or disapproving those future Engineering plans which may be required by your decision in this ongoing approval process. We note that additional plans and approvals may be required by the City if the ERC conditions are imposed, reference Para. is (2), (2) A), (NOTE 2a:), (7), (NOTE 7a:) as described in the report to the Hearing Examiner. It appears to American that the City has conducted an exhaustive environmental review of all aspects of the land reclamation project, and we are rel,-Ping on the City and the applicant moving forward to see this project completed in an environmentally sound manner. American Memorial Services Inc. CITY OF RENTO Earl Clymer. Mayor N'larch 3, 1992 John W. McKenna, Jr. Fiorillo Northwest, Inc. PO Box 66826 Seattle, WA 98166-0826 SUBJECT: Mt. Olivet Land Reclamation ECF,SP-074-91: Dear Mr. McKenna. Department of Planning, Building;, Public Works Lynn Guttmann. Administrator The date of Tuesday. March 17, 1992, at 9:00 a.m., has been set for a Special Permit for Grade and Fill public hearing to review the above -referenced ma,ter. The hearing, before Mr. Fred Kaufman, Renton Hearing Examiner, will be held in the Council Chambers on the second floor of City Hall, Renton, Washington. The applicant or representativeis'j of the applicant is required to be present a, the public hearing. A coon of the staff report will be mailed to you one week before the hearing. If you prefer to make other arrangements to receive the staff report, Tease contact Kathleen Childers, 277-5582, or Sandi Seeger 277-5581. If you ha'.e any questions, please call 23o-2550. Sincerely, Donald K. Erickson, AICP Zoning Administrator cc: Jim Colt American Memorial Ser.ices PO Box 547 Renton, WA 98057 Ron Owes, P.E. Harding Lawson 1325 - 4th Ave. Ste 1800 Seattle, WA 98101 Jon B. Swanson 152 Monterey PI NE Renton, WA 98056 Harold Sevende 114 Monterey PI NE Renton, WA 98056 Chris Wright 120 Monterey PI NE Renton, WA 98056 Versie Vaupel PO Box 755 Renton, WA 98057 Pete Hacke!t 83 Monterey PI NE Renton, WA 98056 Wally Swafford Seattle/King County Health Dec Environmental Health Division 201 Smith Tower Seattle, WA 98105 Greg Montgomery Danielson, Harrigan & Tallys� 4400 First Interstate Bldg Seattle, WA 98104 Attached Party of Record Ames, Mr/Mrs Albert Gonzalez, Mark agus, Nick 101 'Monterey Dr NE 153 Capri Ave NE 52 Monterey PI NE Renton, WA 98056 Renton, WA 98056 Renton, WA 98056 Barnett, NIrs. J.F. Holmes, Karman Rhodes, Mr/Mrs Robert 76 Monterey PI NE 150 Capri Ave NE 123 Capri Ave NE Renton, WA 98056 Renton, WA 98056 Renton, WA 98056 Bentley, Mr/Mrs Edwir Houser, Mr/Mrs Richard Rivera, Patricia 1 15 Monterey PI NE 156 Monterey Or NE 157 Monterey Or NE Renton, WA 98056 Renton, WA 98056 Renton, WA 98C56 Bertagni, Gerald Jacobson, Nancy J. Robnett, Jearette G. 116 Capri Ave NE 170 Monterey PI NE 135 Capri Ave NE Renton, WA 98056 Renton, WA 98056 Renton, WA 98056 Blanton, Mr/Mrs Guy 13y, Marjorie E. Rockhill, Mr/Mrs Randall 88 Monterey PI NE 147 Capri Ave NE 141 Capri Ave NE Renton, WA 98056 Renton, WA 98056 Renton, WA 93056 Blencoe, Mr/Mrs Harry Lee, Mr/Mrs Harold Stone, Lois M. 1 12 "Monterey Or NE 77 Monterey PI NE 140 Capri Ave NE Renton, WA 98056 Renton, WA 98056 Renton. WA 98056 Butler, Marilyn Matteson, Lynn & Georgia Sullivan, Mr/Mrs Patrick 135 Capri Ave NE 164 Monterey PI NE 68 Monterey Or NE Renton, WA 98056 Renton, WA 98056 Renton, `,NA 98056 Connell, Mr/Mrs Robert McKean, Mr/Mrs Jeff Turrentine, Mr/Mrs Elwood 120 Capri Ave NE 109 Monterey PI NE 1 10 Capri Ave NE Renton, WA 98056 Renton, WA 98056 Renton, WA 98056 Crane, Lori Meyer, Mr/Mrs Russell Wallis, Margorie 82 Monterey PI NE 121 Monterey PI NE 70 Monterey PI NE Renton, WA 98056 Renton, YVA 98056 Renton, WA 98056 DeCamp'e, Mr/Mrs Richard Moore, Robert C. White, Priscilla 1 11 Capri Ave NE 58 Monterey PI NE 119 Monterey Dr NE Renton, WA 98056 Renton, WA 9805E Renton, WA 98056 LI iambri, Mr/Mrs William Payers, Mr/Mrs Gerald Williams, Mr/Mrs Clarence 1 13 Monterey Dr NE 103 Monterey PI NE 1 17 Capri Ave NE Renton, WA 98056 Renton, WA 98056 Renton, WA 98056 Duchesneau, B.E. & Lee 151 Monterey Or NE Renton, WA, 98056 Eifying, Sandra F. 76 Monterey PI NE Renton, WA 98056 Fitterer, Marcus 169 Monterey Or NE Renton, WA 98056 O'Brien, R.E. 194 Monterey PI NE Renton, WA 98056 Occupant 56 Monterey Or NE Renton, WA 98056 Oelschlag«, Mr/Mrs Tim 89 Monterey PI NE Renton, WA 98056 Garrison, Mr/Mrs Logan 75 Monterey Or NE Renton, WA 98056 Quiton, Sunny 104 Capri Ave NE Renton, WA 98056 R&C&IV E CITY OF RENTON MAR 18 19�2 C1 N E N 0 R A N D U N HEgRING E MJ # iv��a III DATE: March 18, 1992 TO: FILE FROM: Clint Morgan SUBJECT: MT. OLIVET (AN. MEMORIAL) / MEETING NOTES ATTENDEES: Lynn Guttman, Don Erickson, Gregg Zimmerman and Clint Morgan LOCATION: Planning/Public Works/Bldg. Administrators Office. TOPIC DISCUSSED: During the Public Hearing for the above referenced project and before any Public testimony by Development services, planning staff become aware that we had not been updated with the latest agreement between Mt. Olivet Development personnel and City Administrative staff. Therefore, the reason for a quick emergency meeting on the subject. ISSUE: The proposed containing wall footing would be at a hic.ier elevation then the existing roadway beginning at sta. 2+00 at +2.16-feet to sta. 3+00 at +9.66-feet. Future expansion of the roadway width and sidewalk and planter strip would under cut the wall footing. FINAL CONCLUSION: It w s finally concluded that the Administrative staff and Mt. Olivet Developer agreed to a 15-foot setback from the property line for the wall footing. The city in return would forgo any future sidewalk on the east side of Blaine Ave NE. that would under cut the wall footing if the roadway is widen to 18-feet from center lire due to future access needs This will leave a total distance from the future curb line to the wall footing of 27-feet. The worst -case slope from wall footing to future curb line would be 35% at sta. 3+00 which is within a acceptable range. eUBLIC TESTIMONY: Blaine Ave. NE will in the fui:ure be only an emergency or secondary access to any future development to the south of Mt. Olivet. The 27-foot space between the future curb line and wall will not be greater than 3 to 1 slope and in no event greater then .36%. Th?.s area is to be used for landscaping and trees to screen the wall. 92CEM,044 ' Proposed Grounds Mul.ntenance Program Mt. Olivet Landfill R.W. Thorpe & Associates, Inc. March 17, 1992 turn OF REGISTERED LANDSCAPE ARCHITECT LF,'vy;Wf) E 71CKLER CF-RT W 1CAI E NO. 367 Prepared For: FioriHoNorthwest, Inc. 131 Southwest 1Sbth Street Seattle, "',shington 98166 TABLE OF CONTENTS SPECIFICATIONS: PAGE NO. I. GENERAL REQUIREMENT'S ........................................................................... A. Intent ................................................................................................................1 iB. Workmanship................................................................................................1 C. Materials..........................................................................................................1 D. Clean-up.......................................................................................................... 1 ' E. Commencement 1-2 - 2 F. Loss or Damage.............................................................................................. 2 II. MATERIAL LIST................................................................................................. 2 A. Turf...................................................................................................................2 B. Fertilizer..........................................................................................................2 C. Herbicide..........................................................................................................2 D. Insecticides / Fungicides.................................................................................2 III. SERVICES TO BE PROVIDED...........................................................................3 A. Turf: i. Mowing/Fertilizing ......................... ii. Weed Control.....................................................................................4 iii. Insect and Disease Control...............................................................4 iv . Irrigation.............................................................................................. 4 V. pH Adjustment.................................................................................5 vi. Renovation.........................................................................................5 B. Trees/Shrubs and Groundcover: i. Fertilization................................................................................... S 6 ii. Weed Control....................................................................................6 iii. Pruning 6-7 - 7 iv. Leaf/Litter Removal .................................................. ......................7 v. Irrigation............................................................................................. 7 vi. Inject/Disease Control .......................... - vii. Staking/Guying.................................................................................8 viii. Plant Replacement............................................................................8 TABLE OF CONTENTS PAGE NO. C. Irrigation Systems: i. Activation ............................ - ii. Maintenance................................................................................9 - 10 iii. De-Activation...................................................................................10 iv . Extra Work........................................................................................10 v. Emergencies.......................................................................................10 IV. EXCLUDED WORK....................................................................................10 - I1 V. GROUNDS MANAGEMENT CALENDAR................................................12 VI. PLANTING DETAILS...................................................................................... 14 Specification for Landscape Maintenance for Mt. Olivet Landfill - Landmark Development 1 The success of a grounds maintenance program is dependent upon the incorporation of sound horticultural practices with organized and consistent schedule of services performed by trained, professional horticulturists. The following scope of work is contingent upon this premise, and shouid be ' adhered to. However, this is intended as a guideline only. Actual services to be ' performed may vary due to the discretion of management, weather adversities, soil temperatures or growing conditions. I. General Requirements: A. Intent: Provide labor, equipment and materials as needed to complete the task as scheduled. B. _Workmanship: All work described herein to be executed in a professional workmanlike manner, consistent with standards in the industry. C. Materials: All materials shall be types and varieties used in accordance with regulatory agencies cr meeting standards of the industry, depending on the material used. All chemicals inust be applied in strict accordance with their label and EPA, DOE and FDA rules and regulations. Plant materials must meet Association of American Nurserymen (ANN) standards. All material must be proven field satisfactory and rated for use and climate. All material shall be new, unused and delivered to the site in original manufactures' or growers' containers. D. Clean-up: upon compietion of work at the end of each day, premises are to be left clean and free of excess material and debris. E. Commencement: Prior to beginning work, necessary soil samples and pertinent data are to be obtained that are required for a horticulturally sound p, igram. Proposed fertilizer and chemical applications, including proprietary names (brands), active ingredients, actual active ingredients per application and timing of ' applications, are to be w, ritten and submitted to management prior to the commencement of work. F. Loss of Dames: Any secondary party (not in the employ of the owner of the property, its representatives or agents or subcontractors) shall be responsible for loss damage to owner's ' property as a result of the contributory or actionable party's negligence. Any party not in the employ of the owner of the property, its representatives or agents shall file with the owner an appropriate certificate of insurance in the limits deemed necessary by the owner. Any cancellation notice shall not be less than 30 days. No work will be permitted or paid for unless a certificate of insurance is in place. II. Material List: A. Turf Fertilizer: Shall be based upon soil samples and analyses predicated on appropriate major and minor elements necessary to balance nutrient deficiencies in order to provide con3istently healthy color without substantial fluctuations in growth, color and viability. B. Shrub Fertilizer: Shall be commercial fertilizer blended for the specific purpose of ornamental feeding by species and/or variety. C. Turf Herbicide: Shall be type and composition necessary to eradicate noxious weeds in the turf. Must be applied in accordance with Federal and State regulation. D. Shrub Herbicide: May consist of a pre -emergent selective herbicide or post -emergent, non -selective herbicide. Must be type and corposition to eradicate noxious weeds in nlanting areas without posing any toxicity to desirable plants or adjacent turf. E. insecticides/ Fungicides: Must be type and composition selected in accordance with the governing label (and applied accordingly) to eradicate undesirable insects, scales, pathogenic diseases or pests that pose a serious threat to the viability of the plant(s) in question. 0� III. Services to be Provided: A. Turf: i. Mowing and Edging: a. Erosion control seeded areas shall be mowed monthly during the growing season. Weather, soil conditions (moisture and temperature) and types (variety) of grass will determine the height of cut. Remove no more than one-third of the blade length at any cutting. Maintain at horticulturally acceptable height. b. Grass clippings shall be removed or dispersed depending upon type of equipment used and time of year. In order to conserve and recycle available nitrogen in the cut blade, dispersernent of clippings over the mowed turf is the preferred method. Should the clippings appear objectionable or fail to deteriorate in a reasonably short time, remove them to an agreed upon disposal area. c. Edging by mechanical means next to all hard surfaces shall be accomplished according to the Maintenance Calendar. Edging of turf adjacent to planting beds or undeveloped areas shall be edged by mechanical or chemical means in a manner and time appropriate to preserve a crisp definition between turf and adjacent areas. ii. Fertilizing: a. A healthy, consistent green color will be maintained throughout the year by the timely use of appropriate fertilizer compounds. Between 4 and 8 pounds of actual nitrogen per 1,000 sq. ft. shall be applied. b. Soil tests should be used in determining the type and quantity of applied nutrients. 3 iii iv v Weed Control: a. Broadleaf weeds shall be controlled by the use of E.P.A. approved chemicals, applied by an authorized applicator. b. Wind and temperature are to be closely monitored. Under no circumstances are chemicals to be applied when weather conditions may pose an immediate threat to the application (drift or volatization). c. Noxious weed grass control measures shall be presented to the owner, and upon authorization, be performed on a "time and materials" basis. Turf Insect and Disease Control: a. These types of pests or problems are rarely a serious problem in the Pacific Northwest. However, should an infestation or disease occur, it should be brought to the attention of the owner. b. Treatment will be paid for on a time and materials basis. Irrigation: a. Turf areas shall be watered at the rate and frequencies required to replenish soil moisture (field capacity) in the root zone. During the growing season, approximately 1.5 - 2.0 inches (40 - 55 mm) shall be applied per week at intervals best suited to accommodate mowing schedules and to maintain healthy stands of grass. b. Electrically controlled irrigation systems shall be operated and monitored by the maintenance crew. (See irrigation Systems). c. Manual watering shall be accomplished in such a manner to apply the water within the guidelines established in (a) above with the emphasis on conservation of water. Sprinklers and conveyances will be kept in good condition so as to appear neat and clean. They shall not pose a threat or liability to pedestrian traffic. 4 S vi. lZ Adjustment: ' a. It is the desire of the owner to maintain a soil pH range of 6.5 to 7.5 in order to encourage best turf growth. Should the annual soil test reveal a need to adjust the pH level, the owner shall be asked to authorize the work. If the adjustment can be attained by modifying the fertilizer analyses, the maintenance crew shall do so. ' b. Any application of materials outside the scope of (a) above, shall be performed on a "time and materials" basis. 1 vii. Turf Renovation: a. The control of thatch is a continuing problem in the Northwest. Removal of thatch every two to three years is advisable in order to maintain ' healthy turf. b. Aeration of turf may be recessary to relieve ' compaction and to promote the exchange of oxygen and moisture within the root zone. c. If such additional work is deemed necessary, the owner shall be advised acc *dingly. Such work shall be verformed on a "time and materials" basis. B. Trees, Shrubs and Groundcover: i. Fertilization: a. Plants shall be fertilized a mi:,imurn of 2 times per year. Fertilizer types and quantity will be determined by the type (species and variety) and size of the plant. b. Method of application will be by surface applied granular product. 1. For trees and shrubs, the product in the amount determined by soil tests and/or manufacturers' recommendations shall be applied circumferentially and at the perimeter of the plant (drip -line). 5 2. Groundcover may be fertilized by broadcast method over the planted area. c. Application should be timed so that the fertilizer is immediately watered in by either artificial or natural means. ii. Weed Control: a. Planting areas (shrubs and groundcovers) shall be kept as weed -free as possible and in the following manner: ' 1. Accomplished by means of hand weeding where necessary (where broadcast spraying would pose a threat to desirable plantings). 2. By the use of E.P.A. approved chemicals, applied as either a pre- or post -emergent. b. Chemical weed control shall be performed by an authorized and trained applicator. Prunin a. Trees and shrubs shall be pruned in a selective manner to maintain their natural shape, utilizing the following guidelines: 1. Health - Remove all dead and diseased branches first. Remove crossing branches that abrade one another, leaving the healthiest branch scaffolding. Remove interior branches that compromise adequate ventilation, particularly in trees and/or shrubs susceptible to rust or scab. 2. Shape - To reduce height or width, prune offending branches back to a desirable lateral (drop-crotching), taking care to review and select laterals that afford a balanced result prior to making major cuts. Remove "water sprouts" completely to achieve a balanced and ventilated result. 6 1 ' 3. Color - to 1 Prior pruning shrubs that bloom annually, the maintenance personnel should iacquaint themselves thoroughly with the growing habits of the plant to be pruned. Many, and in some cases all, blossoms are achieved on second -year wood. In order not to compromise some impact on color, shrubs that blossom on second -year wood should be pruned very ' lectively and cuts alternated from year to year. b. The only plants that should be allowed to be ' sheared rather than selectively pruned will be material where it is desirable to retain an appropriate "hedge." iv. Leaf and Litter Removal: ' the a. Fallen leaves shall be removed to avoid clutter of accumulation and the potential breeding ground for pests and diseases. This shall be done throughout the year as needed but with major emphasis on fall leaf removal. ' b. Leaves shall be disposed of in a manner and on site acceptable to the owner. c. Normal litter in turf and beds shall be removed by the maintenance pei sonnel. V. Irrigation: ' a. Electrically controlled irrigation systems shall be operated by the maintenance personnel to ensure that the plants receive adequate moisture to ensure ' growth, color and viability. b. Manual watering (if required) shall be performed i on a "time and matey ial" basis. vi. Insect and Disease Control: a. Minor infestations of insects shall be controlled by ' spot applications of E.P.A. approved insecticides. b. Since it is difficult to anticipate when and if a major ' infestation could occur, it is the owner's desire to 7 1 1 minimize any contingency funding on the part of contract services v,hich result in inflated budgets. 'therefore, a "major infestation" shall be deemed to be taking plr-ce when more than 15% of a given ' - species or variety is threatened with a common pest or disease. Such an occurrence shall be brought to the immediate attention of the owner and will be dealt with accordingly (in-house, contracted services or "time and material" basis). vii. Staking and Guying: Trees develop trunk strength (caliper) and grow better with the least amount of interference. Stakes and guys are to be used only as long as necessary to ensure that the tree will not actually blow out of the ground. 1 Existing tree ties, guys and other securing devices shall be checked frequently and loosened to prevent 1 girdling. Any tree requiring staking or guying after the initial ' establishment period for the type shall be accomplished on a "time and material" basis. 1 viii. Plant Replacement: 1 a. Dead or dying plant material shall be removed by the contractor in order to maintain an attractive landscape. ' b. Replacement shall be made upon owner approval and billed at an greed upon price. 1 c. Plant lost due to negligence or error by any party other than the owner, its representatives or agents, shall be replaced in kind, free of charge. C. Irrigation Systems: i. Activation: 1 Automatically operated (underground, electronically activated) sprinkler systems shall be actuated at the start of the growing season after threat of freezing has ' passed. ii Activation shall consist of the following: a. Close all manual drains that may exist on the mainline, laterals and backflow prevention devices. b. Open all gate (isolation) valves that may exist before the backflow prevention devices and in the mainline. c. Actuate each zoi.e (valve) from the controller in the "manual" mode. Visually inspect each zone to ensure each head (nozzle) is working properly, i.e., popping up freely and clearly, no obstruction in the nozzles or posed by interfering shrubs, groundcovers or grass. Alleviate any obstruction as necessary to ensure pop-up heads retract fully and are flush to the grade when in the "off" position. Make adjustments as necessary to ensure minimal damage will occur when mowing. d. Set the controller to the proper day and hour setting and adjust the time at each station in order to comply with irrigation requirements mentioned elsewhere in this specification. The timing of the system in the operation mode should coincide with the following guidelines: 1. The irrigation should not be running when employees or customers arrive or leave the premises. 2. The irrigation should be timed to apply required moisture without presenting a prolonged "dew - point" condition on the turf, which leads to potential disease problem.,. e. Provide management with a written operating schedule. Maintenance: Systems shall be maintained in good operating condition by the maintenance personnel. This includes: a. Cleaning nozzles of any obstructions. 9 b. Checking and necessary adjustments for proper throw and coverage. c. inspection of automatic values to prevent leakage. ' d. Necessary adjustments to the controller to counter changes in weather conditions or watering ' requirements. iii. De -Activation: ' The system shall be shut off by reversing the check -list enumerated in 1. Activation." Assure the owner all ' drains are open and the system is "freeze -proof" for inclement weather. iv. Extra Work: Failure in system components due to wear, vandalism ' or accidents by others shall be reported to the owner and, upon approval, repaired on a "time and material" basis. ' Failure caused by actions of the maintenance personnel, their representatives or agents, shall be ' repaired, in kind, free of charge_. V. Emergencies: An authorized representative, designated as the irrigation technician, shall liaise with the owner on all irrigation matters. This technician shall provide the owner or its representative on the procedures to take should an emergency shut -clown of the irrigation ' system be necessary. IV. Excluded Work: A. Trees taller than fifteen (15) feet require the services of a trained and ' insured arborist. The maintenance personnel shall maintain observance of such trees and advise the owner of necessary work. Work shall be performed at the discretion of the owner on a "time ' and materials" or unit basis. 1 10 11 B. Acts of God. Acts of God are defined a, damage or death of plant material or damage to the irrigation system due to wind, storm, ' hail, fire, flood, freezing, vandalism, theft, or other natural or willful acts over which the maintenance persunnel or contractor thas no control. ---- END OF SPELIFICAUONS — GROUNDS MANAGEMENT CALENDAR 12 1 1 1 1 1 1 1 GROUNDS MANAGEMENT CALENDAR MT. OLIVERT - LANDMARK SERVICE SCHEDULE kx- - A- kl.v hine fu'v Auc Sept Oct Nov Dec LAWN CARE mol%jng Fertilizing greed control Otherd inni ng Fung gicide IRRIC 1-10\1 Operation check Service/rupoir as ncedt Other/ Manual PLAN -A R F. F0r-.iili7,7Tn-n.,bs Spray insect/Fungus ..as leeded 1'rim g.c. %%'l*J:lD CON11-1101, spray/o fall 1- landsir,}; Othor FO-1 7 11 Sx%.Lvl)/ 11:4 vac -, Loaf pick -111) COLOK SPOFS Bulbs/anm:als OTHER Bark/rock mulc-h as bud et !d Soil's I C,•t -As 13 Spring Bulbs SA Summer Annuals W A Wintu Annuals 13 PLANTING DETAILS 14 M, k cYe, oP C Gn Pict ..:r-4FAREA NkI LZ ,a0-rA04INeA Pb CM, �t4T A -1- cL � Del ER 'd ' 'vv rrH hpMov 5c) T ?AN-47' co t.YJ+' j6a 2-,PrZ: lgv�4S Ser A NIA 6?r 2'- c. �T w � IP At,.:� urn olw buys 5r#<.s �,.�- cam.► I INms, Z �-1 U LC-�4 TO 13 E Pmlj P-0 rootrok0ov . A,- � U5 W yb O� bcJRl.�p Rrwbi� I (ZL°L r,-R lW 5Ac-4e-F%L WITH �'' �ZEI�. �1�126t Y�4Bl•�,. MI)MM AS 5PEor-top IN ( ` LoftfM's WATVM I iJ . Lb Nor TAMP TREE PLAWINNG NO SCALE '24.)VtDE 64INUDD-AGE tX71 uZEc � 7� -e Pr, ZAIc.H GH;4U15 III* l SrIRVB h' 1= � RD Vti D �.�! E.L. �Uti Q r•j 1 Us�►Z^r' �AcKF(LL w 74 FPL�'nPI�6 �1IxTUICF S?EG J. �o tiIDT �-AN� P SHRUB PLANTING NO SCALE GrwC iUZE (j(�- H-P c* P- - 2 lA-Tek OF r-1 U Lz� - (1 IGFI Ujt �EAiTUZE WALL/SHRUB & GROUNDCOVER PLANTING NO SCALE SP-074-91 2—A CONCEPTUAL DRAINAGE REPORT 1 1 CM OF R9r0W RE C E I V ED OCT 2 5 1991 CONCEPTUAL STORM DRAINAGE REPORT FOR MOUNT OLIVET RECLAMATION SITE ��YYYYYY• Prepared by: Marlene F. Ford IAMD IA.*-V%&k\1).\-1kV X.I.\i }.s, INK F\(,I\ffR> %tRVE)OR.� PLk\\EW� BAINAPE kWHITT( I\v IE\nsT5 1 )IIII I, 1\ ( ,WAA A ksIiI\(,Tl l\ k\[) VALIR)I A ilipi \ u R( ( KI1\ Hill Rl I) +( ITE 1w; u n'.'— I t AV cute-n .%' 1W la L�n BUILDING DfVISION OCTO B E R 25, 1"1 MEMORANDUM TO: JOHN W. MCKEti-NA, JR. FROM: MARLENE F. FORD DATE: NOVENIBER 4, 1991 SLBIEC i : MT. OLIVET - PRELIMINARY STORM DRALNAGE STUDY =if.itX*hits! *if iilf!li s ii / f =! ii•".7 xv * *li=i=i *Xa s s*z a x *sf ti iif 1 * On November 4, 1991, 1 received a telephone call from Jennifer Toth Henning, Project Planner at the City of Renton. She observed an error on the fold out maps, within the Conceptual Storm Drainage Report, entitled "Existing Storm Drainage Features" and "Propose' Storm Drainage Features". Roth maps illustrate the location of Lhe four existing homes along Blaine �.►enue East incorrectly. I would likf. to confirm that the location of these homes was shown incorrectly on the referenced maps and the homes should have been drawn within Phase 6 of the Mt. Olivet reclamation site. It is my understanding these homes may be relocated within the area, but exact location at this time has not been determined. Therefore, providing 12-inch culverts under the existing driveways at the time of ditching along the east side of Blain Avenue East as stated in the Conceptual Storm Drainage Report may not be necessary. Installation of the four 12-inch culverts, weather temporary or permanent, will be depended on the timing and proposed location of the four existing residents. cc: Jennifer Toth Henning PLANNING DIVISION CITYor: n- P,inl' PLANNING DIVISION „ v CITY OF RENTON NOV 61991 RECEIVED C M1D E .AM AIND.kSSOCL�M-INC. L\GL`:EERS. SURNIYORS PLi\NUS. Di Xr-,CVE �RCHITECi-. =YMMS OFFICES IN 0RfGON.'1ASHL\GT0\ .v\D C-WrOK\Lk 13812. 101STANT-NI-E CT.. E. A-M 10, PO 80\-3, PLi'.UiL'P. V.1,'5HL\GTo\ 983-' 120618f0.3880 FAX 1106) 8+U-188, FROM �E.07 E ail 88t� EAIt TlMfc C.tr-J4 NE lord SttE,Cr N EXISTING IRRIGATION POND J•c01 LEACHATE PRETREATMENT BUILDING (SEE NOTE 1)—� EXISTING LEACHATE \ COLLECTION POND (SEE NOTE 2) 3 LL / L O O( •I is �EF NOTE 2 In- GP-3 • \ N..On. I O 5TREEj NE 9F G \\ ' w ✓fie EXISTING q POND l��mcw�P� \EXISTING SETTLING o _...�... POND I EXISTWdr -4 p 2 --- ► A — -- I I 0 C W ►MASE 3 ,�, � / � ---------- PHASE 2 --_---- - - EXISTING TRUCK WASH t• CONCRETE \ RECYCLE AREA MT DUVET GE3AE7ERY 1 1 �} �jcl�Tlr.� L}O►�E� err qcjufss OFF 'LAME Avr- KU-w• LEGEND O MANHOLE D CLEANOUT PROPERTY LINE — — LEACHATE COLLECTOR LEACHATE TIGHTLINE '— -- DRAINAGE CITCH T� STEEP SLOPE 0 ( MONITORING WELL BKGND-'• ■ GAS PROBE (APPROX.) EXISTING SETTLING POND 2 EXISTING SETTLING POND 3 NOTES • '. LEACNATE ME,-REATLiNT I1lJLDING TC aE CONSTRUCFD A3 ► Irr OF CLM:)FF WALL •Z EXSTING LEACMATE COLLEC74N ►CND AMC TIGNTLJ"E FROM YANMOL£ TO of REMOVED LAON COUPLE'KJN OF LEACHAT: ME -TREATMENT 3LRLDiNG. Myll (YAK and Ai9C(AE, K. PLAZA 129, P.O. KIX 7X69 MftALLUP, MA Mn (ZK)NF.yEI E70STWG STOW DRANAGE FEATUM AW"C"t' A CONTENT UST FOR DRAINAGE REPORT FOR CONCEPTUAL DRAINAGE PLAN A. Starnped and signed by a Washington P.E. on the front page. Complete Technical Information Report MR) Worksheet that is enclosed. B. Briefly describe the construction involved. C. Describe existing and proposed on -site drainage features. D. CORE AND SPECIAL REQUIREMENTS 1. Show that Core Requirements 1-5 in Section 1.2 are addressed. 2. Show that all Special requirements in Section 1.3 that are appiicable to tyis project are addressed. E. Use the SSUHISCS hydrograph method to compute required on -site catention. (Using 2,10, and 100 24 hour design storm events for pre-deveioped and post - developed conditions (6 separate peak flows). This should snow sizing for the peak rate runoff control(retentior/detention) facility, with a routing tabu. F. Biofiltraticn preliminary and conceptual design talcs (per Sactien AZ, if for project site sub -basins with more than E000 square feet of new impervious ar-,A subject to vehicular use or storage of chemicals. G. Wet pond sizing preliminary and conceptual design caics (if ,here is more than 1 1 acre of new paved impervious area and meets other conditions of Special Requirement #a). ' H. A LevelllCown� strea m Analysis, as described ir. Ccre Reouirement *2. (Level M2 or 3 anaiysis may a requested later if a downstream probiem is found or anticipated from review of the initial submittal of the Drainage report). ALL REFEr19NCES REFER TO THE 1990 KING COUN T e SURFACE WATER DESIGN IMANUAL. 21.142:.KOS:ps I Page 1 of 2 King County Bupdirig and land DeveMpnwnt DtvWon TECHNICAL INFORMATION REPORT MR) WORKSHEET . • Township 21*3 Phone r . • Al - Address PI-ione 12M)l - 2&0 Upstream Drainage Basin Size AC Subdivision Short Subdivision Grading Commeraal Other •G�1 -- PART 4 OTHER _ DOFiG HPA _ Shoreline Management = COE 404 = Rockery DOE Dam Safety — St'uctural Vaults _ FEMA Fioodpiain —_ Other COE Wettarc's — HPA Community Drainage Basin t �0 442 f —� , j , _ _-r4&M �qivte—a nr rttf/1itn — Flooddain — -- --- Stream Wetlands -- ____-- .--------------- --- -- Cnbcal Stream Reach Seep&Spnngs DepressionsiSwales High Groundwater Table J Lake — t— - Groundwater ec'1arge SteeD Slopes -. _ L� -- Other -- - — - ---- - - — - Lakeside/Erosion Hazard Slopes Addibona! Shoots Attatched rosion Potenbaf 1 /90 Page 2 of 2 King County BuNd ng and Land DevMop rd Dlvkdw TECHNICAL INFORMATION REPORT MR) WORKSHEET REFERENCE Additional Sheets Attatched A -I! 1011 a fi•-..'1�. __.,� MtNL4UM ESC REQUIREMENTS DURING CONSTRUCTION C Sedirnentabon Faddas St&dtzed Constnxlion Entrance Penmeter Runoff Control Cleanng and Grading Restrcaons Cover Practucas Construdron Sequence Other 5i 4- Grass Lined Charnel F"Pe System Open Channel Dry Pond Wet Pond Tank Vault Energy Dissapator Wetland _— Strear-s Bnef Descnoon of System Operation 0 . / a I.. 1 -1 - -- Fac,kty, Related Site Limitations ' ►� Reference Fadify Li nrtation Cast in F`Wce Vault Cflher Retavinig `NaN Da,.+. 0*ats Rockery > a' Figh C strucftxal an sleep slope y2. MINIMUM ESC REQUIREMENTS FOLLOWING CONSTRUCTION Staoitze Exposed Surface Remove and Restore Temporary ESC Families Clean and Remove AJI Sift and Debns Ensure Operation of Permanent Faolit:es Fag Limits of NGPES Other - al%WN CMP1. 4- J lnf:,traticn _Method of Analysis -- -- ^eoress,on F;cw (hsoersal Compensabon/Mitigaticn yyauver of Eiimnated Site Storage Regional Detention -- - h 4 OPAL. • Additional b�we% Atiatched TRACTSPART 12 EASEMENTS ^ra� Easement • b1i Z Access Easement — Native Growth Protection Easement �_ T�•act Other - n�./totrlr` I or a dvil aMpr sr under my supervision hom vi@*W ON silo. ACWM A A 1 Item B. of Attachment "A": Briefly describe the construction involved. ' Mount Olivet is a Demolition Debris Reclamation Site, owned by American Memorial Services, Inc.. The site is located within the corporate limits of the City of Renton; east of state highway 405 and south of the Highlands Park area. The area on site to be filled is approximately 8.9 acres in size. Debris is hauled to the site and checked at the entry office. Type of material, size of vehicle, source location of haul, date and time are checked at the entry office. Debris is then spread and compacted by a steel wheeled compactor and covered at the end of each day of operation. Some material is crushed and recycled such as concrete debris. Upon filling of the 8.9 acre site the final slopes are graded and the entire area of disturbance is then hydroseeded to provide a complete vegetation cover for slope stabilization. 1 1 1 1 1 1 1 1 1 yl 1" M EXISTING AND PROPOSED DRAINAGE FEATURES Item C. of Attachment "A": Describe existing and proposed on site drainage features. EXISTING DRAINAGE FEATURES: (Refer to "Existing Storm Drainage Features" map) The existing drainage features are not completely contained on site, some drainage features have been constructed off site as well. Along Blane Ave NE, on the east side of the existing roadway and fronting the project site a " V" ditch with straw bales has been constructed. This `V' ditch drains to the north. At the intersection of Blane Ave NE and the haul road there exist a 12-inch diameter concrete culvert. This 12-inch culvert conveys the runoff to the northwest, terminating within a natural ravine along NE 3rd Street. Along the south side of the haul road is another ditch system with rock check dams and silt fencing perpendicular to the flow to tt ap sediment. This ditch system drains to the east and is conveyed to the natural ravine by the same 12-inch concrete culvert noted above.. Along the east property line of the project is another ditch system. This ditch system drains to the north and terminates at an existing Pond, labeled Pond #3. Pond #3 than drains into Pond #2 and Pond #2 releases to the natural ravine along NE 3rd Street by way of a 12-inch CMP. There is also in place an existing settling pond, labelled Pond #1, that releases to the road side ditch system along the south side of the haul road. This pond now intercepts runoff occurring from the northeast area of the site. Please refer to the "Existing Storm Drainage Features" map found at the end of this -ection. PROPOSED DR LINAGE FEATURES: (Refer to "Proposed Storm Drainage Features" map) The existing ditch system located on the east side of Blane Ave NE will be extended to the south to Mt Olivet Cemetery property corner. 12-inch concrete culverts will be provided at all existing driveway approaches. The existing ' V" ditch will be cleaned and reshaped as necessary due to the on site retaining wall constn-^tion activities. The ditch will be grass lined and rock check dams installed at intervals necessary determined by velocity calculations, to be preformed for final design. The existing ditch systei,i along the haul road will be maintained and cleaned and reshaped where necessary. Both ditch systems, east side of Blane Ave NE and south side of haul road will be conveyed to the natural ravine by the existing 12-inch concrete culvert. Rip rap will b,� hand placed at the in[ t and outlet. along with final cleaning of this culvert at site completion. Along the south and east side of the site a grass lined ' V ditch system will be constructed. The ditch system located along a portion of the south side and along the ca,t side of ►h,- project will intercept surface flow form the site and convey it to Pond #3. As much of the ditch as possible (to he determined during final design) along the south side of the site will be graded to Pond #3. The portion of the ditch along the south side that cannot be conveyed to Pond #3, will be conveyed westerly to the ditch system along Blane Ave NE. It is the intent of the final design to minimize this length of ditch flowing this direction. Pond #3 will than drain to Pond #2 and release into the existing 12-inch CMP that drains to the ditch system located can the south side of the haul road. Again this 12-inch culvert will have rip rap hand placed at the inlet and outlet, and the culvert cleaned upon final site consuuction. Pond # 1 will be removed due to the proposed grading and filling within this area This area will than drain directly into the ditch system located along the south side of the haul road. Please refer to the "Proposed Storm Drainage Features" map four ] at the end of this section. i f F-Al'S Aj* Glki`L} SA511%6 LJ/ul NE EXISTING IRRIGATION POND LEACHATE PRETREATMENT BUILDING (SEA NOTE 1)� YV EXISTING LEACHATE COLLECTION POND (SFE NOTE 2) — EXISTING TRUCK WASH MT OLIVET CEMETERY I I I �pCISTIh.I� L14MES r"T �i`+ O r F SL NJE AVE ► it LEGEND O MANHOLE D CLEANOUT PROPERTY LINE LEACHATE COLLECTOR LEACHATE TIGHTUNE DRAINAGE DITCH cSTEEP SLOPE f 0 I MONITORING WELL BKGNC-1 0 ■ GAS PROSE (APPROX. ) EXISTING SETTLING POND 2 — EXISTING SETTLING POND 3 NOTES LEACHATE PRE, REATMENT allILDING 7C BE CCNS'RUC -'_ AS PART OF CUTOFF WALL +2 2- EMSTWG LEACHATE. CCLLFC-1CN PCNO ♦ND TIGHTUNE FACM MANHOLE TO BE REMCVED UPON CCMPLE'1CN CF LEACAAT'c PRE-RFATMEN' 3UILCING, MWID EYNE aid IM( PLAZA 128, P.D. IN PUTALLIF', WA 99373 (2h H—dl1 Q 1..-.— ♦..--.• -- ••q .� EXISTM STORM DRAKAM FEATURES LEGEND O MANHOLE CLEANOUT PROPERTY LINE N - -- LEACHATE COLLECTOR LEACHATE TIGHTUNE EXISTING _... IRRIGATION POND -- DRAINAGE ORCH P) STEEP SLOPE EXISTING� -- .... POND A MONITORING WELL wj BKGND-11 GAS PROBE (APPROX.) J(OFF W L 1=xtsT tn1G� =° LEACHATE PRETREATMENT \G *I "' "' ► l CMG BUILDING (SEE NOTE NOTES �• \\ _ — �, 0 1. LEACHATE PRETREATUEW BUILDING 70 BE CONS'pUC"cD H-4 \ \ Z AS PART OF CUTOFF WALL •2. PHASE 4 I 0 J� BH-6 1-------- i / 2. EXISTING LEACNATc COLLEC'7CN POND AND 7IGMTi1NE EXISTING G _�•� I �L FRCM MLET ANHCLE TO BE REMOVED UPON COMPION LEACHATE BH OF LEACHATE PRETREAT?AENT SUILOING. COLLECTION POND PHASE S PHASE 3 (SEE NOTE 2) - � •.. EXISTING TRUCK SETTLING WASH POND <� SEE NOTF 2dEXISTING - 3( PHASE 1 \ SET'TL NG I=�ISTlIJCT '5TOQf A SyST&. PHASE 2 I POND 3 IAJSI-A -r•-Efl By FIQ- L•1• FOR- P f �I I T5lJJ� a�1.1-L �� SH-1 PHASEa CONCRETE I I r GtEAt�1E0 Y45 N��E.SSRit-�( uj �BH :I0 ■ GP-1 RECYCLE AREA \ IJPOf�I S CT GGHPL�CT1 or.1 A+•Jp O i II St"�101 l_ 1 �4T1 Or.l . O1 INstA ► L- 12"t Ica w %, . % mm AT Au. IJ4.IVEI.JA i -� i3o y a 3F' J � 'MT OLIVET CEMETERY GP-3 • i)p� �7 GgAO44 LINeD " V = 101?'C 4 . ti Harding L.wron As—iatee E-;,— q -a En..v rr.+- S-- — )(79( DAVID [W and ASSDCIAI PLAZA 129, P.U. 90) PUYALLLP, WA 98777 (20C PROPOM STORM DRANALaE FEATURES CORE AND SPECIAL REQUIREMENT'S Item D. of Attachment "A": Core and Special Requirements 1. Shaw that Care Requirements 1-5 in Section 1.2 are addressed. 2. Show that all Special requirements in Section 1.3 that are applicable to this project are addressed. 1. DISCHARGE AT THE NATURAL LOCA `ION: The natural location of discharge for this project is at the natural ravine located along N-E 3rd Street. (Please refer to "Drainage Basin Map" found within Section H.) All runoff is proposed to be released at this location. 2. OFF SITE ANALYSIS: A Level I analysis was performed on October 23, 1991 and can be found within Section H of this report. 3. RUNOFF CONTROL: Within Section E of this report hydrographs were generated for a 2, 10 and 100 year; 24 hour storm event, for pre -development and post -development conditions. Please refer to this sect;on for results. 4. CONVEYANCE SYSTEM: Proposed conveyance systems on site intercept no off site runoff due to existing and proposed topography. Proposed and existing off site storm systems will be designed to convey contributing area. Due to the surrounding topography contributing area is limited. Please refer to "Drainage Basin Map" found within Section H of this report. 5. EROSION/SEDIMENTATION CONTROL PLAN: Existing settling ponds are functioning well for Lhe project now, along with existing ditch systems found along the haul i oad and Blane Ave NE. The existing ditches have haybales and/or silt fencing installed to trap siltation. This system should be cleaned as necessary due to the weather at hand. Permanent erosion control measures will be hydroseeding the entire site and establishing a complete vegeta,:ion cover. Proposed and maintained existing ditch systems will also be hydroseeded to prevent erosion. 1 ISPECIAL REQUIREMENT'S: The only applicable special requirement for this project is item # 11. Item 11 requires a ' Geotechnical Analysis and Report. It is my understanding Ritten-Zeman dt Associates, Inc. were employed to preform a "Subsurface Exploration and Geotechnical Recommendations" ' for the proposed retaiiung walls. k 1 1 1 1 1 1 1 1 1 11 1 11 fl 11 I I I E 1 HYDROGRAPH COMPUTATIONS ' Item E. of Attachment W: Use the SBUH/SCS hYdrogniPy method 1O 00mpnte required on site detection. Using 2, 10 and 104 24 hoar design storm events for pre -developed and ' post -developed conditions (6 separate peak Oom). This should show, sizing for the peak rate runoff control (retention/detention) Wilily, with a routing table. This project site in its state w pre -developed as a gravel pit. The existing topography at that time was similar in shape to the proposed, but the highest elevation found on site was elevation 250, approximately. The post -developed state of this site will be a hydroseeded site, with the highest elevation found on site to be elevation 330 feet. Therefore, the curve number for post -development will be improved from pre -development. The time to concentrate for the two conditions is different, please refer to Time Concentrate Map found at the end of this section. The hydrographs generated for pre -developed condition have greater peak runoff rates than the hydrographs generated for post -developed condition. Therefore, retention/detention basin sizing was not preformed. since it would generate a negative volume required. Please note Pond #3 and Pond #2 will be maintained as settling basin feature for the proposed storm system. The final construction of this site will improve the peak runoff rate previously sly experienced from this site and provide adequate bio-filtration of surface flows. 1 1 1 1 1 1 1 1 1 JOB DES A. BY SHEET OF SHEETS DATE �' -V 4ke, scams hyd. �Y�t �oD�. �5Jpp. viWz - loo� SCE ►r,�+�,adl vv SBt�M rn�.�tdl wi d b� ;�i �ecJL� � 2 � lO eo�o �} f�crx' psllickn. Qw`�n e>[�1. � Sdd�cd l�+ �, � "tom► "�/ 4ki5 .( �o, � '�'1fS Sire-tcric�o(le�G.S G 4�Ga�iP.l �i'�. � 1�1i.. Sid¢ �GSic..l� ifeC Sim `� LZCA.S Ckfflrocima� clef. 2YJ'. 0.= 9. o a creS 4 ii 11 1�P �T�Q A 50iIS_�.CT�a�e�_fouds_�r,�h�G�as�o�sa�3�• 71'►'�e. '�D �.4'1C.6r�'aa+te. Ss.e- 'r►'� T -� - la --_ - a y 6. 0. oz.Re -- - r J ■ 1 PAID EvAm A iDASSOUA'iESJN..1NC. J 1 CUM OF _ SHIM JOB DnCMPTM _ DATE IC?-24 -gl deyct oze�l- qT -7 -- - I 1 - 9+Q' rni -- - - - 4,0 3. Sob VA Ll E { -}--• p.S - - -T-T- -- 1 1 1 1 JN. Fp)� WD EVA MlS ANDASSOCWTF INC ByCLEKT BEET _ 9 OF �11EE1f JOB DESCAIP TM Orly _ •�-_ Loc.Z. C>ll tx� dAA.O,,., tt- LJ�'- i Tt ). x lao a D. d = 3. ►8 �S 0- Ljr. - •.Gl "_ z KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TABLE 3.5 2B SCS WESTERN WASMYGTON RUNOFF CURVE NUMOBERS SCS WESTERN WA"NGTaN RUNOFF CURVE NtA*A S (Published by SCS in '98rt1 Runoff curve raot ers for saleeted agriculft , subutbsn and urban Land use for Type 1 A raslfaN digmbumn 24-flour sU)rm dllrrlOR CUM NIAMBERS BY HYDROLOGIC SOIL GROUP LAND USE DESCRIPTION I A 8 C D Cultivated larld(1) welter conda)n j 86 91 94 9d Mouruain open areas. Iow growrV brush and grasslands i - 74 82 89 92 Meadow or pasture 65 78 85 89 Wood or torest Land undesturbed 42 64 76 81 Wood or forest band young second growth or brush 55 72 81 86 Orchard with cover crop 81 88 92 94 Open spaces. lawns, parks, golf coursm cemeteries. �—..• terdscapirlg good condition grans cover on 75% or more of the area 68 80 86 90 fair condition grass cover On 50% to 75% of'.he area 77 85 W 92 Gravel roads and parking lots 85 89 91 Dilt roads and parking lots 72 82 87 89 FImperwx s surfaces pavement surfaces pavement, roofs, etc i 98 98 96 98 Open water bodies lakes wetlands. ponds. etc I 100 100 100 100 Single Family Residential (2) I Dwe4hng Unit/Gross Acre % lmperv�ous (3) 1 0 DU /GA 15 Separate cunn number 1 5 DU/GA 20 sflsi be selected 2 0 DU /GA 25 for pavrous and 2 5 DU!GA 30 "T'per^ous portion 3 0 DU/GA 34 of the s•e or basin 3 5 DU/GA 38 a 0 DU / GA 42 4 5 DU/GA 46 5.0 DU/GA 48 5 5 DU /GA 50 6.0 DU/GA 52 65 DU/GA :�4 7 0 DU/GA 56 PWv,wd unit derelopr►lents. % rnpemom condornm urns. apartments, must be corrVulled corrlrnercial business and i xkmrmi areas (1) For a more detased descrptM or 11119rcum rar eat u96 wr nuFra,w x 'WWI lu F wuv W r-' Pa" W. - .V Handbook, Section a. Hydrvfogy. ChaPW 9. August 1972 (2) Assumes root and drN way rt" is directed into atraet/st"m system (3j The remauxng pervw-*A areas (fawn) are cana+dered to be in good condaron for these curve numbers w KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TABLA 3S.2C "n" AND "t" VALUES USED IN TOM UALAAR-A I lum Fum im I &m%fu ems-Amm i 'R to. EQuO.M ealarlla woo rr so bow 300 a of m* �. lrstra/+ sveaoaa Ewa aeDisek 0s*ow or iw roe rec"d am t Flew ism a owe no "Amm jw fosaw gas C m.l d ad .w head oww (a • • a]0 Itm aea C Aws"d and 'oon 017 Semi Oar» On— aW —1% 0 1 S Dww vmmes OJa bm"uma gray aa1 Aanpa (wunic a13 wooas a toraw .en rani u amtrwh aao wood. or soraw ,.ar oabe vwron..n oAo •earnwrrg vNaN ki b^rM rP. QIY born Gr ww so M endows 1970 (See TA -SS 12" 1' VaA+as Used n Tao Two/Tom d C VCoMXWn CACL arle fi&". CorCW V&jW ixy. (AM ry V" 300 R a1 ~ GO- A - 0 1) '. 1 Fores wwh 4*wv, ground rr and Rwdo s (n.0 1Ct 3 2 bean g wjo wen Kwm awaa in • 0 0w) S 3 Faao.r a MWWr%0n Maps 0AMMOn (n .00a01 a a Mrgn grass to • 00xi 0 S SW, g>se poSk" and Wamne (n-0 0701 11 t pftw y Wo grm" (n - 0 02S) q r ►ar+d and Po-* won In -0 0121 r cy w+vr Fw). oftw .amen") (Al w a.Pwrw at -a"* cnw.rw A -0 2) '. 1 Faeuao a..aw .ren W»vy gr[wr10 ww In 0 101 i 2 F(rrssal ara+gape rnvwrra..0 .ran oelrnarr cwww Oa0 in•00lG1 1J 3 Pack #~ urerwav In • 0 0361 t3 Grasew vwowsy In .0 03M t 7 S Ear1n ansn •wvrwr I n • 0 023; � a cmp Drys 0 0241 I1 7 concroo me 10 012) 42 a Oow •+1.-+v. and DID= 0�00/n Chomr si Flow K-.orwwAxx omw,, A . 0 41 a• a W rrb'wg swaeen .ran a0"" Doob In - 0 04q 10 AooJna0 "raw* (n •0 036) 1 1 araaea"d wen- (n . 0 0 o >h 12 Ohw wwww rw.rlsrde wane" and Me off/"'• -see cheo w S 7 we ! 3.6e to 6*00W wo , -m- vebae for ape dlraws 3-52-7 Lm a 250 d 1 TOA O✓ viCNT,3(/ILDiPJGO i�IGi%Ql eW,ti ,:D�+� ,� r,' OBE 3 2610 lad 330 e p. / i • t k • 331 • 332 .' �333 335 N 331 / ` 33 ji A, S/ TE STUB7�, M � fi UNOfF CH ALONG ��' L srIALL BE S TRUC TE OR TD FINA L ti a 335 -334 330 Me- 301 rx 310 277.05 300 lob 5 SPECIFY STORM OPTION: 2 S.C.S. TTPE-IA RAINFALL DISTRIBUTION ENTER:•FREO(YRS)°,"DURATION(MRS)","PRECIP(INCMES)• 2,24,2 --------- ------------------------------------------------------------ *** S.C.S. TYPE-1A DISTRIBUTION •**•**••'**�•'•*•* •`*''**** 2-YEAR 24-HOUR STORM '•*' 2.00" TOTAL PRECIP. ---------------------------------------------------------------------- ENTER: A,CN,TC FOR BASIN NO. 1 9,76,5.24 DATA PRINT-OUT: AREA(ACRES) CN-VALUE TC(MINUTES) 9.0 76.0 5.2 PEAK-C(CFS) T-PEAK(FRS) VOL(CU-FT) .45 7.83 13515 ♦ffrrfrfrrrsrretrsr♦ S.C.S. TYPE -IA DISTRIBUTION *r•'•fffrrrff....... r...rrfrr 10-YEAR 24-HOUR STORM w "* 2.90" TOTAL PRECIP, rrr...r.. ---------------------------------------------------------------------- ENTER: A,CN,TC FOR BASIN NO. 1 9,76,5.24 DATA PRINT-OUT: AREA(ACRES) CN-VALUE TC(MINUTES) 9.0 76.0 5.2 PEAK-0(CFS) T•PEAK(MRS) VOL(CU-FT) 1.73 7.83 3098C ..rarr.rrr.rfrrrrrrf S.C.S. TYPE-lA DISTRIBUTION rr s..r.f rrwr rfff ssr. ••'*'••'• 100-YEAR 24-HOUR STORM '••' 3.90" TOTAL PRECIP. ••"'••'• --- ------ --- --------- -- --------- — ------------------------------------ ENTER: A,CN,TC FOR BASIN MO. 1 9,76,5.24 DATA PRINT-OUT: ARW ACRES) CN-VALUE TC(MINUTES) 9.0 76.0 5.2 PEAK-Q(CFS) T-PEAK(MRS) VOL(CU-FT) 3.50 7.83 54307 fb5t ro • SPECIFY STORM OPTION: POL�e2(J S.C.S. TYPE -IA RAINFALL DISTRIBUTION ENTER:"FREO(YRS)","DURATION(MRS)","PRECIP(INCHES)" 2,24,2 ---------------------------------------------------------------------- rrrrrrerrrrrrsrsrrry S.C.S. TYPE-lA DISTRIBUTION s++wrrrr++rwrwrr+srr mrr+++r 2-YEAR 24-HOUR STORM .'•' 2,00" TOTAL PRECIP. •'••'•"'• ---------------------------------------------------------------------- ENTER: A,CN,TC FOR BASIN NO. 1 9,68,19.23 DATA PRINT-OUT: AREA(ACRES) CN-VALUE TC(MINUTES) 9.0 68.0 19.2 PEAK-0(CFS) T-PEAK(HRS) VOL(CU-FT) 14 23.83 6342 ---------------------------------------------------------------------- +tr+rrwwwwwsrrtrrr«r S.C.S. TYPE-lA DISTRIBUTION wwrrrr r+r r......wrrw '•"+*••' 10-YEAR 24-HOUR STORM " " 2.90" TOTAL PRECIP. "'^••'•' ------------------------------------------------------- -------------- ENTER: A,CN,TC FOR BASIN NO. 1 9,68,19.23 DATA PRINT-OUT: AREA(ACRES) CN-VALUE TC(MINUTES) 9.0 68.0 19.2 PEAK-0(CFS) T-PEAK(HRS) VOL(CU-FT) .40 8.00 18783 --------------------------------------------------------------------- twwr+wwwwrwwrwr+w««« S.C.S. TYPE-lA DISTRIBUTION «ww wr«w.w.....w..w.r " ***'•*' 100-YEAR 24-HOUR STORM '"• 3.90" TOTAL PRECIP. •...... ---------------------------------------------------------------------- ENTER: A,CN,TC FOR BASIN NO. 1 9,68,19.23 DATA PRINT-OUT: AREA(ACRES) CN-VALUE TC(MINUTES) 9.0 68.0 19.2 PEAK-O(CFS) T-PEAK(HRS) VOL(CU-FT) 1.39 7.83 37243 1 MY9ROURAPM PLOT s 2ex M ^ 2dev I q6m... — I* hr I&V 5.00------------------------ +----•------+-----------+-----------+-----------•-----------+-----------+-----------+-------_...+ 1 I I I 1 I I I 1 1 I I 1 I I I I I i 1 I 1 1 I I I I 1 1 I i 1 I 1 1 I I 1 1 1 Y I I 1 1 I 2 I I I 1 I 1 T 1 I 1 1 I 1 I J I I I 1 1 1 I 1 I I 1 I I i ' 4.00------------ +-----------+-----------+-----------+-----------+-----------+------...--+-----------+-----------•------------ I 1 1 i I 1 I I I I 1 1 1 1 I 1 I I I I 1 1 1 1 I I I I 1 I I I 1 1 1 [ I I I 1 I I I 1 1 t 1 I 1 1 I i I I i I i I t I 1 1 I 1 f I 1 ! 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I I 1 1 I I I 1 1 1 1 I 1 1 I 1 I I i I 1 I I ' I 1 I 1 1 1 i 1 1 I I 1 i ------• l I 1 I I I 1 l •-------•-- •-------- -------------i ' i I I I 1 i 1 1 1 I l 1 1 I I I 1 1 3.00------------------------ +----------------------- 1 i 1 1 I 1 1 I 1 1 1 I i I I ....................................................................... I i 1 1 I ! 1 I I i I 1 1 I I I 1 1 1 I 1 I 1 1 1 1 1 i + 1 I I 1 I I 1 I 1 I 1 1 1 I 1 1'S) ) I 1 1 1 I I 1 i I 1 I I I i I I I I I I 1 1 I I I I 1 I I 2.00 ..._--....--......--.........._ l 1 1 I 1 1 1 I I 1 1 1 I 1 l 1 I I 1 I I 1 I I 1 1 1 1 1 1 I 1 1 1 1 1 1 1 1 1 I I I I ! I I 1 1 l 1 I 1 1.00 ------------------------------------------- I I - ------_---+•----------+--------...,........---+------------------------ 1 I I l I 1 I I 1 1 I I 1 t I 1 I 1 1 1 1 I I I 1 I 1 1 i 1 1 I l I t I I 1 I 1 ! I I 00 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 1 l 1 I ......• ..••---+-----------+-----------•-------- 1 I I - •-----------............ .00 2.00 4.00 6. 6.00 10.00 12.00 14.00 16.00 16.00 20.00 TIME (MRS) MTDROGRAPM PLOT • 10(E --------- -.-.-------•-------.... ----------- ........... ..........., I I I 1 I ! 1 1 I [ 1 ! I [ 1 [ I I I [ 1 I t 1 1 1 I 1 ! 1 I I l t I I 1 I 1 I I 4.00------------ +----------------------------------- ,-------------------- ...------------------------ +........................ ' ! 1 ! I I I I 1 1 1 1 f I I t I 1 I 1 I I I I 1 l 1 1 1 1 1 I f t 1 1 1 1 1 3.00+-----------+-----------+-------------------- f I i ........... +------..--.- I ..........,....----....------.....+----........ I I I 1 1 1 I 1 1 l I 1 t 1 1 �5) I I 1 I 1 ! I 1 I 1 I 1 I 1 1 ! I 1 1 I I 12.00 ------------ -------------------------------- .......... ............................................... ...........---------+-----------+----------...........--•-----------+ 1 1 l I 1 1 I I 1 I 1 1 1 1 1 I 1 1 1 I 1 I 1 I I I I I 1 1 1 1 1 1 1 1 I I I 1 I I I l 1 1 1 1 i I I 1.00 ----------------------------------- ---- -------- .................................... ' 1 1 1 ! t ! t I i t I 1 1 I I I I 1 1 I 1 1 I I 1 1 1 I 1 1 I I I I 1 I I t t I I -------------- I I 1 I I 1 ! 1 I 1 t xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx I I ............................... t 1 I ,................................... t I I ,........... I , .00 .00 2.00 4.00 6.00 8.00 10.00 12.00 14.0^ 16.00 18.00 20.00 TIME (MRS) 1� 1 1 1 1 Fol ."v . I BIOFILTRATION FOR IMPERVIOUS AREAS CREATED Li 1 I 1 1 1 I 1 1 1 Item F. of Attachment "A": Biotiltration preliminary and conceptual design cales (per Section 4.6), if for project site sub basins with more than 5000 square feet of new impervious area subject to vehicular use or storage of chemicals. There will not be any impervious areas created for vehicular use or storage of chemicals. ' A separate leachate system will be installed and leachate generated will be conveyed via a separate collection system to the Leachate Pretreatment Building. From here the processed material is released to the City of Renton sanitary sewer system. Bofiltration provided within the proposed ditch systems will be biofiltrating surface runoff generated from the on site hydroseeded slopes. The surface runoff will be quite clean prior t:, interception of the proposed ditch system. There may be some silts rom the hillside at first, until the ' hydroseeded areas have an opertunity to firmly establish a complete ground cover. ." M 111C WET POND SIZING ' Item G. of Attachment "A": Wet pond sizing preliminary and conceptual design calcs (if there is more than 1 acre of new paved impervious area and meets other conditions of Special Requirements #4). Again, there will be no creation of impervious area due to this project. All slopes will be ' grass hydroseeded creating a pervious area site wide, approximately 8.9 acres. LEVEL I DOWNSTREAM ANALYSIS Item H. of Attachment 'A": A Level 1 Downstream Analysis, as described in Core Requirement #2. (Level 2 or 2 analysis may be requested later if a downstream probiem is found or anticipated from review of the initial submittal of the Drainage report). A Level I Downstream site investigation was preformed on C sober, 23, 1991. Actual research at the City of Renton for storm drainage records was not preformed due to the time frame and urgency to submit this report to the City by October 25, 1991. It is proposed as part of final design, City records will be investigated and City officials questioned in regards to storm drainage issues. The following is a narrative of the downstream features observed in the field on October 23, 1991: Located at the southeast corner of the intersection of NE 3rd Street and Blane .Ave NE is a small pond. This pond is used by the cemetery for irrigation purposes. (pump house located on the Past side of the pond) Located within the pond is an open grate manhole, at time of field investigation this grate was 1.5-inches submerged on the outer edge_. This manhole allows the pond to acquire a depth of approximately 10-feet before it flows, orifice style, into the existing manhole. There is a storm collection and conveyance system within NE 3rd Street, this storm system was extremely clogged with siltation, sometimes so severe silt was only a foot below the grate, therefore direction of conveyance system was hard to determine. All pipes that were observed were 8-inch concrete, all laterals on the north side of the road were conveyed to the south, from here the drainage ran westeriv down NE 3rd Street. It was unclear if the main heading westerly was within 3rd Street or located to the south within the natural ravine. Citv documents should clarify this, but i► was apparent all runoff from 3rd Street ended at an open system on the east side of state highway 405. 1 he natural ravine was also walked, no culvert outlet was observed for the open ,rate manhole located within the irrigation pond, therefore this system must be tightlined through the natural ravine area. The ravine itself is quite wide at the bottom, varies between 40-feet wide to 10-feet at the ravine end. A small channel was observed for approximateiv 400-feet located on the south side of the ravine at this point the channel dissipated out. Approximately 600-feet from the intersection of NE 3rd Street and Blane Ave NE the ravine ends, a natural ridge replaces the ravine. At this location a manhole was found with a solid lid labelled "sewer", could not remove lid off to observe pipe sizes. This manhole had an opening at the concrete collar that would allow any runoff through the ravine to enter the system. It is unclear if this manhole was for sanitary sewer or storm convevanc:e. West of NE 3rd Street and Monterey, just west of the Monterey Manor Apartments the natural ravine on the south side of NE 3rd Street reappears. Approximately 100-feet below this a large culvert (36-inch diameter concrete) releases it appears from under NE 3rd Street, area had heavy blackberry cover. The flow then turned southwesterly following state highway 405 on the east side for approximately 150-feet. At this point the open channel entered a 36-inch concrete culvert angling southwest where it was assumed to terminate at Cedar River. The flow entering this last concrete culvert was observed to be flowing 8-inches deep. Please refer to the Drainage Basin Map found at the end of this section. when available for final design. This final investigation may reveal the project site should be releasing into the irrigation pond where the runoff can directly enter the large storm main observed on the east side of 405, unless there eidst a connection to this main within the first 60C feet of the natural ravine located on the south side of NE 3rd Street. �R WIN CAI- _\\Alllr�\It�.✓� `�� ,�, 1.., •�►�, ;� WEI ►1T big in NNIXf ] oil A Report Prepared for Fiorillo Northwest, Inc. 131 Southwest 156 Seattle, Washington AMERICAN MEMORIAL SERVICES, INC. MT. OLIVET RECLAMATION SITE PLAN OF OPERATION HLA Job No. 1981' , :11.09 by Ro d J. •res. P. E. Const- =,; Principal Engineer Barbara A. Zaroff �^ Project Engineer Harding Lawson Associates 1325 Fourth Avenue, Suite 1800 Seattle, Washington 98101 (206)622-0812 November 1, 1990 19613,001.09\o9we'n pin Nowemb r 1, 19N TABLE OF CONTENTS 1.0 INTRODUCTION........................................................................................................ 1-1 1.1 Site Ownership and Location.......................................................................... 1-1 1.2 Compliance With Applicable Regulations...................................................... 1-1 1.3 Purpose and Objectives of Plan and Operation ............................................. 1-2 2.0 LANDFILL OPERATING PROCEDURES................................................................ 2-1 2 I General............................................................................................................. 2-1 2.2 Operating Personnel and Functions................................................................ 2-1 2.2.1 Site Attendant Duties.......................................................................... 2-2 2.2.2 Spotter Duties....................................................................................... 2-3 2.2.3 Compactor Equipment Operator Duties...... ....................................... 2-3 2.3 Landfill Development Process......................................................................... 2-3 2.3.1 Phases I and 2..................................................................................... 2-4 2.3.2 Phase 3.................................................................................................. 2-4 2.3.3 Phase 4.................................................................................................. 2-4 2.3.4 Phase 5.................................................................................................. 2-5 2.3.5 Phase 6................................................................................................. 2-5 2.3.6 Closure.................................................................................................. 2-5 2.4 Facilities Operation and Maintenance............................................................ 2-6 2.4.1 Leachate Collection System................................................................. 2-6 2.4.2 Leachate Pretreatment Facilities....................................................... 2-6 2.4.3 Truck Wash.......................................................................................... 2-7 2.4.4 Access Roads........................................................................................ 2-7 2.4.5 Erosion Controls.................................................................................. 2-7 2.4.6 Drainage Facilities............................................................................... 2-7 2.4.7 Dust Control_...... 2-8 2.4 8 General Site Maintenance................................................................... 2-8 3.0 FACILITY CLOSURE................................................................................................ 3-1 4.0 SITE iNSPLCTIONS AND MONITORING............................................................... 4-1 4.1 General.............................................................................................................. 4-1 4.2 Groundwater Monitoring................................................................................. 4-1 4.3 Gas Monitoring............................................................................................... 4-2 4A Leachate Discharge Monitoring.................................................................... 4-2 50 SAFETN AND EMERGENCY PLANS AND PROCEDURES............ ................... 5-1 5.1 General.............................................................................................................. 5-1 5.2 Fire................................................................................................................... 5- 1 6.0 ENVIRONMENTAL CONTAMINATION CORRECTION PROCEDI 'RES........... 6-1 IN13,001 09'�operztn pin November 1 19W � TABLE OF CONTENTS (CONTINUED) 1.0 CORRECTIVE ACTION PROGRAMS IF GROUNDWATER ................................ 7-1 CONTAMINATION IS DETECTED 8.0 RECORD KEEPING AND REPORTING................................................................. 8-1 APPENDICES A MT. OLIVET RECLAMATION SITE PHASES 5 AND 6 EXPANSION ` ND FINAL CLOSURE PLANS B SAFETY PLAN C GROUNDWATER MONITORING PROCEDURES D LEACHATE PRETREATMENT FACILITIES OPERATIONS AND MAINTENANCE E DRAFT METRO DISCHARGE PERMIT NO. '600 FOR MT. OLIVET LAND RECLAMATION 19413,001 09\opor►.n pin November 1, 19W 1; AMERICAN MEMORIAL SERVICES, INC. MT. OLIVET DEMOLITION DEBRIS RECLAMATION SITE 1.0 INTRODUCTION 1 1 SITE OWNERSHIP AND LOCATION The Mt. Olivet Demolition Debris Reclamation Site is owned by American Memorial Services, Inc. The demolition debris reclamation activities are operated b� Fiorillo Northwest Inc. under a contract with American Memorial Services, Inc. The site is located within the corporate !imits of the City of Renton, is shown on Figure I. The debris reclamation site accepts demolition debris and includes a recycling operation for concrete received at the site. The area in which demolition debris is placed for fill is approximately 8.9 acres in size. 1.2 COMPLIANCE WITH APPLICABLE REGULATIONS ' The State of Washington promulgated "Minimum Functional Standards for Solid Waste Handling" (MFS), WAC 173-304, which became effective in November 1985. All ;andfil:s operating beyond 1989 must meet the requirements set forth in the MFS. The Mt. Olivet Demolition Debris Reclamation Site receives demolition waste which is defined b, the MFS as follows. "Demolition waste means solid waste, largely inert waste, resulting from the demolition or razing of buiidings, roads and other man-made structures. Demolition waste consists of, but is not I;mited to, concrete, brick, bituminous concrete, wood and masonry, composition roofing and roofing paper, steel, and minor amounts of other memis like copper Piaster (i.e., sheet rock or plaster board) or any other material, other than wood, that is likely to produce gases or a le3chate during the ,lecomposition process and asbestos wastes are not considered to be demolition waste for the purposes of this regulation.' The Minimum Functional Standards exempt demolition debris sites from the locational standards for solid waste facilities They also do not require that specific design criteria be met as is the case for landfills receiving municipal solid waste or ash. 19813,001 09\operatn pin Nov*mber 1. 1090 I 1 5EAG.i j KE NNYDA L=�. c�+w trl�ti .\ tr =f __�-=TT-:r- rut 3i�.J"t y-I n IL. - u .n T: I �.'^Y, r Cwr• S7.z-_i+` �\ ' 1 s .1 in. tr It ... =a.er«`!'•:( I'I'.'�s� Lf k e i '\\. ='•fixfr�_\`�'. �.-ice - w •l� TIN T a - �\!-\�}a�T..�_�>�-�.+ f•--�, ——-----------------�-----.---1..�-----� _ � .%'YET--��.•�'.�+. ✓� �— .i� 16 r Gar\v> e t f } �:._. R I \ ..-= -7l. I •5-� i)!/� i`\ H,. t�l-<i.r,. '�1'I,tl r,tw `' ! ,i1s�K_ T�I . Gri::L� - Tr'a s di 1 n d i o r. I = ° i �i 3 a., o CALF 5 I N I .+aw o .-oi I I ! a" Iti •a��' .'_ �_,%-�` { I I i\, �- (nn •' v*,r ssN I ""'so-.. .yam' -M I LE'S :i—JGO • SI I I �~I I I I I �'� 1\� r•-''.rl { s - w�LJ i� -- ^ S. 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I " � � - ,3,a .,.r.,, -, v, rl I `°" = xl \ � � -ram � - ......-.:,:'- "•. ,,, � - ' `oste � �'/ of st • �. � «I t;.t�_�_•/_ �ar> .� n� ��`��y r.. >� i I � _ � a7�„ ` u17`°S'-.mil ..r,tsl '•I•�.:iJ».Is I I; .r - -- I ----------5------- r-;. ;, .iC rlSr_ •. �i.\r s I ' •ry>_r...�: ! , `. , ao i� F..: -,, Ctdp� � S I - ` . • �� v eti» s4�r19LSC4 ''� °. '�� `� - '.,:� li:.,t, r M y��I! '• \. IHr•rrh1T '�\ �, ' avatar •• tr^ , r. s rtC �,' •pQ� : S'-_�'•\M1�' I •r:` �I _,u\: -rl =,•rr ) ._ //,�r S -^ \2 r`".T"! •� ..., w �`'�.J mil.•,. :I.I': I'> I �+%r �F` Is '� ~ `'� _% �t all•' 1✓•�. .+t. ,t _ • S „2^•19c '9.r. `� 1 �i_ J % _' a. .t,* n \ �,• tea.:- _�—.. '^I 7<,.�51 i -fir. , .a C��_ iir�• •4\�� 'I�S'•rr :9 I 11 � : >I I •��. I ?wnr M.H' i'°s: •y ♦� 'I• �' �7r• .��t i,''t i�ui•1 r -� :K �` y ^'Ias ' S: � :I �� ,.•,r.r i .�1-'�•,�S IT I r r -: r , I ••vu FN NrrdlnQ Lm-~ ♦—iootr• q•—.N PROJECT VICINITY MAP _m.orrwanr S.rr•c� 1 T 1.30 PURPOSE AND OBJECTIVES OF PLAN AND OPERATION 1 The Code of the King County Board of Health, Title 10, Rules and Regulations No. 8 ("King ' County Solid Waste Regulations"), establish, in Section 10.32.030, requirements for a plan of operation for all applicable solid waste handling facilities. The requirements set forth for the plan of operation establish than. "Each owner or operator shall develop, keep and abide by a plan of operation approved as part of the permitting process in Chapter 10.16. The plan shall ' describe facilities' operation and shall convey to site operating personnel the concept of operation intended by the design engineer. The plan shall be available for inspection at the request of the health officer." M13,001 0G\op+rntn.p1n November 1, IVA I -2 2.0 LANDFILL OPERATING PROCEDURES 2.1 GENERAL Demolition debris is br-)ught to the Mt. Olivet site in vehicles operated by contractors and other companies involved with construction and demolition activities. Upon entering the site, the vehicles stop at the entry office where their load is checked to make sure that it contains only permitted debris. A numbered ticket is prepared by the site attendant which includes the size of vehicle, type of material, responsible parties (generator, hauler, etc.), and the date and time of access. The vehicles carrying debris are then sent to one of two locations by the site attendant', depending on the material being transported. Vehicles carrying concrete are sent to a concrete recycling area where the concrete is deposited. The concrete is processed in a crusher. These materials are then sold to companies which utilize the crushed concrete in construction proje(:i- Vehicles carrying demolition debris other than concrete, such as clearing debris or wood, are directed to the fill area by the site attendant. The material is deposited by the vehicle at a location, as directed by an individual referred to as a spotter, who is located at the fill area. The material is then spread and compacted by a steel wheeled compactor, and covered at the end of each day's operation with a minimum of 2 inches of soil. The location of the site's activities is shown on Figure 2. 2.2 OPERATING PERSONNEL AND FUNCTIONS The Mt. Olivet demolition debris landfill is operated with a minimum of three personnel. These include a site attendant, spotter, and equip;nent opera,or, whose duties are as follows: 19813.001 09\opomtn pin November 1, 1990 LEGEND SjpEE� ( O MANHOLE NE 3Ft0 D CLEANOUT PROPERTY LINE N — - — — — LEACHATE COLLECTOR EXISTING LEACHATE TIGHTLINE IRRIGATION POND — DRAINAGE DITCH -STEEP SLOPE EXISTING W POND • MONITORING WELL BKGNO-1 • ■ GAS PROBE ,CWF W EXISTING (APPROX.) SETTLING LEACHATE PRETREATMENT \ 01 — _ __... POND : BUILDING (SEE NOTE 1) ku •� -- NOTES _ — — — — . \ Q LEACHATE PRETr EATMENT BULDING TO BE CONSTRUCTED • 1\ _ AS PART OF CUTOFF WALL s2. J� BH-6 PHASE • O / ' Z EXISTING LEACJiATE COLLECTION POND AMC 71GHTUNE EXISTING G • --- ---'-- Lu FROM MANHOLE TO BE REMOVED UPON COMPLETION LEACHATE �BH- COLLECTION POND PPHASE 3 OF LEACHATE PRETREATMENT BUILDING wt5E S � (SEE NOTE 2) EXISTING _ ` EXISTING TRUCK SETTLING WASH SEE NOTE 2 J 3 PHASE 2 PHASE 1 IFO} PHASE 6 U I/ BH-I CONCRETE 'BH I 4 • tGP-1 RECYCLE a W ai 4 AREA �_.�.. UT OLIVET CEMETERY i GP-3 ■ \\\ Harding Low— Ara—i.t.. POND 2 EXISTING SETTLING POND 3 DEVELOPMENT PHASES AND Figu ENVIRONMENTAL MONITORING LOCATIONS The site attendant is located at the office building at the entry to the Mt. 011%et demolition debris reclamation site. This person's primary duties are to assure that only materials that are permitted are allowed onsite, and to maintain records of materials brought to the site. Specific duties are as follows: • Make sure that access to the site is restricted to authorized personnel only. • Make sure that all vehicles stop at entry office. • Sign all vehicles and operators in on a numbered ticket prior to entering site. The ticket shall indicate the following: -- Size of vehicle (determined by actLal box measurement), indicating yardage. -- Type of material being delivered (building debris, concrete, land clearing, etc.). -- Source (origin) of material. -- The responsible parties (generator, Aauler, other). -- Date and time r ' access. • Maintain all vehicle tickets in sequential order, without omissions. Site attendant shall maintain accurate records of all vehicles entering the site. • Visually observe the type of material being delivered and prevent delivery of any unacceptable materials. • Be responsible for monitoring and recording all vehicle access to the site. A separate log shall be maintained on all vehicles, and on persons entering the site for any rc;lson other than waste disposal. • Direct vehicles to proper areas for segregation of waste stream. The waste stream shall be segregated as follows: -- Compactable building debris or mixed debris shall be directed to fte spotter at the active area of current debris cell construction. -- Concrete, brick, asphalt, and rock or gravel shall be directed to recycling area for applicable processing. Earth materials shall be directed to appropriate areas for stockpiling of cover materials. Earth materials may be directed to the active area of cell construction for use in the construction process 19413,001 09\0pentn pin November 1, 1990 Z-� -- Trees, small stumps, and land clearing shall be either temporarily placed in the active area, and separated for recycling or processing to a maximum size of 2 feet measured in any direction, prior to permanent placement in cells. -- Topsoil shall be stockpiled for final cap. Appropriate signs shall be present as required at the entry building. Signs on the site shall inform and direr' vehicles to appropriate area of activity. An individual designated as a spotter shall be located at the active fill area where demolition debris is deposited. The spotter shall be present at the active area at all times that debris is being dumped. The spotter's specific duties include: • Direct vehicles dumping debr:� to the specific desired location. The objective of the fill placement activity should be to minimize the width of the working face or exposed area at which materials are being placed, and to maintain layers of material 1�t less than 2 fe'. to enable proper compaction. • Visually inspect the material being deposited at the landfill to assure that only allowable debris is being placed at the site. If prohibited materials are detected, the equipment operator should be notified so that the material can be taken to an area onsite for transfer to a disposal site approved for receipt of this material. rator Duitel The operator of the compaction equipment shall be responsible for the proper construction of ' the debris fill. T'iti% €ball include making sure that the debris is ,pread in approximately 2-foot lifts and drive. over with t compactor a suitable number of times to assure proper ' compaction. Proper compa.. , � ;n shall be determined in part by visual inspection to make sure that void areas do not exist because of material bridging or size. The lifts then form the daily cells which have a max,aium depth of 5 feet. The operator shall then cover the 5-foot cell with ' a minimum of 2 inches of earth at the end of ea^h day's operation, or not more than 6 inches for every 5 foot lift. ' 19813,001,09\operitn pin November 1, 19N 2-3 ' 2.3 LANDFILL DEVELOPMENT PROCESS The area which is being filled and reclaimed with debris material is shown on Figure 2 and is being developed in six phases. 2.3.1 Phase: 1 and 2 t Phases l and 2 are currently at capacity, and have receives: final cover. Preparation of these ' phases included installation of a 20 mil PVC liner on the excavated and compacted floor of the fill area. Perforated leachate collection pipes were placed above the liner along the western and northern ends of the liner. The liner is sloped to drain toward these two collection pipes with a minimum slope of 2 percent in approximately the northwest di section. ' The two leachate collection pipes currently drain by gravity to a manhole which, in turn, drains to a PVC -lined leachate storage lagoon in the northwest corner of the site. The lagoon is presently pumped on an as -needed basis, and the leachate is disposed to the City of Renton ' Sewer System. Once Phase 5 construction ha:, been completed, the leachate collection pipes will be redirected to the Leachate Pretreatment Building (Section 2.3.4) and a permanent sanitary ' sewer line will be installed between the building and Manhole *8. 1 Phase 3 has also reached capacity, and has received 2 feet of final cover. The liner system ' consists of a 20 mil PVC liner installed on the area floor which is connected to the liner located in the Phase I and 2 areas. The liner was covered with 1.5 feet of well -draining sand, and ' another 1.5 feet of earth for drainage enhancement and protection. The liner design was performed by AMS and inspection was performed by Rittenhouse, Zeman, and Associates, a consulting firm located in Bellevue, Washington. A leachate collection line was installed along ' the northern end of the Phase 3 area, aced connected to the existing manhole which currently drains to the leachate storage pond, and will be rerouted to the Leachate Pretreatment Building ' upon completion of Phase 5 (Section 2.3.4), A lined berm was constructed along the western side of the fill area to prevent leachate from migrating off the lined area in that direction. 1 ' 1" 1],001 09\operatn.pin November 1 1996 2-4 ' 2.3.3 Phase 4 ' Phase 4 has also reached capacity and has received 2 feet of final cover. The Phase 4 area drains at a minimum grade of 3 percent to the south. A 20 mil PVC liner was installed and covered with 1.5 feet of free -draining sand and 1.5 feet of soil. The leachate collected on this liner drains into the perforated line installed at the north end of the Phase 3 area. Cut-off Wall *1, constructed and lined along the northern end of the Phase 4 area, contains leachate along the northern site boundary. 2.3.4 Phase 5 Phase 5 development has involved construction of Cut off Wall *2, as shown in Figure 2, and ' the Leachate Pretreatment Building. The Leachate Pretreatment Building will contain facilities for stripping hydrogen sulfide out of the leachate flow before it is discharged to the City of Renton sewer system. The stripping facilities will consist of a column filled with packing material, a carbon filter, and an exhaust fan. The leachate collection pipes currently discharging to the leachate storage pond will be reconnected to a pipe discharging to the Leachate Pretreatment Building. The existing leachate pond will be removed, and the area excavated to the desired grade. A 60 mil HDPE liner system, and leachate collection pipes w,lil be installed as shown in Drawing Cl, Appendix A. The liner system will consist of 6 inches of a sand leveling course, the 60 mil geomembrane embedded in two layers of geotextile, and an overlying layer of 2 feet of sand bedding for liner protection. Fill activities will be initiated in the Phase 5 area as soon as construction of the Cut off Walls *I and 02, the Pretreatment ' building, and Phase 5 liner has beet,. completed. ' 1.3.5 Phase 6 Phase 6 will include construction of Cut off Wall *3, as shown. on Figure The area will be excavated and lined in the same manner as described for Phase 5, and fill operations will commence when necessitated by elevations of fill in Phase 5 (Drawing C-2, Appendix A) 1 19i13,001.09\operstn pin November :, 19W 2-5 IL16 Cloarrt ' Closure will be carried cut as final fill elevations in each development phase (Drawing C3, Appendix A) are achieved. Final cover will include 2 feet of material with a permeability of ' to-6 cm/sec or less. A minimum of 6 inches of topsoil will be placed above the final cover, and grass will be planted and maintained on the topsoil. 1 2.4 FACILITIES OPERATION AND MAINTENANCE Operation and maintenance requirements for specific facilities located at the landfill are presented in this section. It is important that these facilities be maintained as described, to ' enable the landfill to operate in an environmentally acceptable manner. ' 2.4,1 Leachate Collection Srsttm The ieachate collection system consists of perforated pipes which collect and convey leachate to storage facilities. The collection pipes can become clogged with silt if not property maintained. Weekly inspections should be made at the discharge location of each pipe to assure that they are conveying leachate. Access to the leachate collection system for jet cleaning of suspected clogs shall be provided bv ' the cleanouts located at the end of each major collection pipe, and the manholes shown in Drawings Cl and C2, Appendix A. The standpipe at the south end of Phase 6 serves as the ' cleanout for the major leachate collection pipe servicing Phases S and 6. This standpipe will be constructed in sections up to finished grade elevation as the lifts of refuse are placed, as shown in Drawing C6, Appendix A Concrete collars will be formed around the top of the standpipe at the top of each lift to prevent lateral movement. Similarly, Manholes A and B will be raised in sections to finished grade elevation. These two manholes will provide partial access to the leachate collection system for cleaning. Manholes should only be entered under conditions in full compliance with the Rules for Confined Space Entry presented in the Site Safety and Health Policy attached in Appendix B. ' 19413,001 09\ope ratn pin November 1, 191io - b 1 2.4.2 Leachate Pretreatment Facilities ' The existing leachate storage pond will be removed by the time Phases 5 and 6 open for landfilling. This facility for leachate handling has been replaced by the Leachate Pretreatment Building, which will be constructed as part of Cut off Wall *J2. The leachate generated in Phases 1 through 6 will be conveyed via the collection system to the Leachate Pretreatment Building, which will house equipment for removing hydrogen sulfide from the leachate before discharging it to the C;ty of Renton sewer system. As shown 1n Drawi.ng C6, Appendix A, the pretreatment facilities consist of a stripping tower, carbon filter, and exhaust fan. The flow of ' leachate into the building can be shut off by an 8-inch valve located upstream of the stripping tower. Leachate is discharged to the north to Manhole 8, located in Blaine Avenue, where the ' flow will be measured. A remote recorder will be located in the Leachate Pretreatment Building to enable flow monitoring from inside the building. The operations and maintenance requirements for the leachate pretreatment facilities are contained in Appendix D. 2.4.3 Track Wash The truck wash near the entrance to the site will be used and maintained until the landfill is closed. The water -bath truck wash is provided for the removal of dirt from the tires and undercarriage of trucks prior to leaving the site. This water bath should be checked daily to make sure the ' water elevation is at the correct leve! The bath should also be drained as required, and soil deposits removed with this occurring at least weekly. ' 2.4.4 Access Roads ' All access roads that are paved will be patched or repaved as required due to wear Unpaved access roads should be covered and maintained with a gravel layer, to minimize erosion and excessive roadway rutting. IN13,001 09\operatn pin November 1, 19W -7 2.4.5 Eroslo■ Coatrnts Exposed slopes should be hydroseeded. Slope protection needs should be checked on an as - needed basis, and appropriate measures should be taken, as necessary, to maintain sideslope cover. 2,4,6 Drafo ee Facilities The debris reclamation site currently includes three major settling ponds, and a number of ditches for collecting and conveying surface water. The settling ponds should be re -excavated as needed, at least monthly, to remo%e accumulated soil so that the ponds continue to act as settling facilities. Drainage ditches should also be cleaned periodica;ly and after any major rainfall event. The drainage channel at the northern site boundary also contains silt fences which should be cleaned, as required, including after each storm event. During site closure, an asphalt lined stormwater ditch will be constructed along the three cut off wills at the top of the final cover slope. At the property line, this ditch will convert to a rock - lined channel, and connect to the existing ditch to the north. These stormwater drainage ditches are shown on Drawing C3, Appendix A. f4t�#A7MWIrM During dry weather, all unpaved areas which are subject to vehicle traffic should be kept watered, as necessary, for dust control. The Mt. Olivet landfill site should be maintained in a manner that minimizes the potential offsite impacts. Of importance are the maintenance of leachate controls, drainage facilities, and erosion controls described previously In addition, debris and litter control should be carried out on a routine basis. At a minimum, the site and surrounding access roads should be visually inspected daily, and all potential problem areas noted for corrective action. At this time, any ezposcd debris or litter should be rerroved frorr both onsite and offsite areas adjoining the landfill operation. IN13,001 09\uperatn pin November 1, 1990 2-8 1 3.0 FACILITY CLOSURE The contractor shall close the facility in accordance with all applicable federal, state, and county regulati ins. Prior to closure, all facilities for control of leachate, methane, and surface drainage shall be in place and operating. This facility shall be closed in a manner consistent with the closure procedures outlined for the ' site. Post closure operations shall consist of the following: • Maintenance of surface drainage control systems. • Maintenance of leachate management control facilities. ' Maintenance of methane monitoring control and/or recovery facilities. Maintenance of revegetated areas. The facility closure will include final filling of the fill areas to meet the final topography presented in Drawing C3, Appendix A. A final cover of at least 2 feet of material, with a permeability of 10-6 or less, will be placed and covered with 6 inches of topsoil on which grass will be seeded and maintained. i19813,001.09\operatn pin November 1, 19" _ I