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HomeMy WebLinkAboutSEP2011-00068 Stormwater - SEP Determinations - 9/27/2011 oN-STAA MASON COUNTY �P5 C ° DEPARTMENT OF COMMUNITY DEVELOPMENT M o AS U �= Planning Division y N T L? P O Box 279, Shelton, WA 98584 �oJ Y �,o~ (360)427-9670 1864 DETERMINATION OF NONSIGNIFICANCE (WAC 197-11-340) SEP2011-00068 Description of Proposal: Provide additional stormwater protection to the Allyn stormwater utility system by adding state approved Filterra device, added catchbasin and an infiltration gallery. Erosion control provided during and after construction by Public Works staff. Proponent: MASON COUNTY PUBLIC WORKS Location of Proposal: EVANS ST ALLYN Parcel Number: 122200060010 Legal Description: COUNTY R/W Directions to site: State Route 3 to Evans St. in Allyn Urban Growth Area. Lead Agency: Mason County The Lead Agency for this proposal has determined that it does not have a probable significant adverse impact on the environment. An Environmental Impact Statement (EIS) is not required under RCW 43.21 C.030(2)(c). This decision was made after review of a completed Environmental Checklist and other information on file with the Lead Agency. This information is available to the public upon request. Please contact Allan Borden at ext. 365 with any questions. This DNS is issued under WAC 197-11-340(2). The Lead Agency will not act on this proposal for 14 days from the date shown below, when the determination is final. Comments must be submitted to Dept. of Community Development, P.O. Box 279, Shelton WA 98584 by 10/11/2011. Appeal of this determination must be filed within a 14-day period following this final determination date, per Mason County Code Chapter 15.11 Appeals. f21 ( Authorized Local Government Official Date r' TO BE COMPLETED BY APPLICANT AGENCY USE ONLY A. BACKGROUND: 1. Name of proposed project,if applicable: RECEIVED Evans St. Stormwater Retrofit SEP - 1 2011 2. Name of applicant: Mason County Public Works MASON CO. PLANNING DEFT. 3. Address & phone number of applicant& contact person: 100 W Public Works Drive Shelton, WA 98584 (360)427-9670 ext. 635 ATTN.•Jeremy Graham 4. Date checklist prepared: 812412011 5. Agency requesting checklist: Mason County Department of Community Development 6. Proposed timing or schedule (including phasing, if applicable): October 2011 7. Do you have any plans for future expansion, or further activity related to or connected with this proposal? If yes, explain. No. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. None Known 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes explain. No. 10. List any government approvals or permits that will be needed for your proposal, if known. Mason Environmental Permit Application (MEP) will be submitted 11. Give a brief,complete description of you proposal,including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. (Lead agencies may modify this form to 2 TO BE COMPLETED BY APPLICANT AGENCY USE ONLY include additional specific information on project description.) 12. What is the location of the proposal? Give sufficient information for a person to understand the precise location of your proposed project,including a street address,if any,and section,township, and range, if known. If a proposal would occur over a range of acreage,provide the range of boundaries of the site(s). Provide a legal description,site plan,vicinity map,and topographic map,if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. This project is located in the city of Allyn on Evans St. NE '/ Section 20 Twp. 22 N. Rge. 1 W. B. ENVIRONMENTAL ELEMENTS: 1. EARTH: a. General description of the site (circle one): Fla rolling,hilly,steep slopes, mountainous, other slight slope to waters edge approximately 10% h. What is the steepest slope on the site (approximately percent slope)? Approximately 10%slope C. What general types of soils are found on the site (for example,clay,sand,gravel,peat,muck)? If you know the classification of agricultural soils, specify them and not any prime farmland. Everett gravelly loamy sand, 15 to 30 percent slopes d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. No. e. Describe the purpose,type,and approximate quantities of any filling or grading proposed. Indicate source of fill. No fill will be involved with this stormwater retrofit project. f. Could erosion occur as a result of clearing,construction, or use? If so, generally describe. Very limited ground disturbance will take place. Minimal excavation will occur to allow placement of 3 TO BE COMPLETED BY APPLICANT AGENCY USE ONLY stormwater devices (filterra and infiltration gallery) g. About what percent of the site will be covered with impervious surfaces after project constructions (for example, asphalt or buildings)? The project takes place in already disturbed areas, within a impervious parking lot. No new impervious surface will be created. h. Proposed measures to reduce or control erosion, or other impacts to the earth,if any: Installation of silt fencing and straw bale check dams. 2. AIR: a. What types of emissions to the air would result from the proposal (IE dust, automobile, odors, industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities,if known. During the project the primary emissions would be equipment exhaust. b. Are there any off-site sources of emissions or odor that may affect your proposal? If so, generally describe. None known. C. Proposed measures to reduce or control emissions or other impacts to air, if any: None proposed. 3. WATER: a. Surface: 1)Is there any surface water body on or in the immediate vicinity of the site(including year-round and seasonal streams,saltwater, lakes, ponds, wet-lands)? If yes, describe type and provide names. If appropriate,state what stream or river it flows into. The project is approximately 60 feet landward from the shoreline of Case Inlet. 2) Will the project require any work over, in, or adjacent to (within 200 feet) of the described waters? If yes,please describe and attach available plans. The project site is located within 60 feet of the shoreline. 4 TO BE COMPLETED BY APPLICANT AGENCY USE ONLY 3)Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. n/a 4) Will the proposal require surface water withdrawals or diversions? Give general description,purpose,and approximate quantities, if known. No. 5) Does the proposal lie within a 100-year floodplain? If so,note locate on the site plan. No. 6)Does the proposal involve any discharges of waste materials to surface waters? If so,describe the type of waste and anticipated volume of discharge. No. b. Ground: 1)Will ground water be withdrawn,or will water be discharged to ground water? Give general description, purpose, and approximate quantities,if known. No. 2) Describe waste materials that will be discharged into the ground from septic tanks or other sources, if any (for example, domestic sewage: Industrial, containing the general size of the system, the number of such systems, the number of houses to be served(if applicable), or the number of animals or humans the system(s) are expected to serve. An infiltration gallery will allow stormwater to perk through the ground surface. C. Water Runoff(including storm water) An infiltration gallery will allow stormwater to perk through the ground surface. 1) Describe the source of runoff (including storm water) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe. 5 TO BE COMPLETED BY APPLICANT AGENCY USE ONLY Rain/storm water is, in general, the only source of runoff. This project is designed to capture the runoff and divert it through an approved Department of Ecology stormwater filtering device (filterra). The filterra is equipped with an overflow pipe that will then direct water back into the existing catch-basin. From the catch-basin the water will gravityfeed to a newly constructed infiltration gallery that will allow the stormwater to perk back into the ground preventing any polluted water from entering surface water of the state. 2) Could waste materials enter ground or surface waters? f so, generally describe. This project is designed to prevent waste materials and waters from entering surface waters and allows them to be diverted into the ground for filtering. d. Proposed Measures to Reduce or Control Surface,Ground and Runoff Water Impacts, If any: Filter fabric fence and/or straw bales shall be installed as needed to prevent transport of sediment into the waterway due to rain/storm events. A spill kit will be on site to control fuel/fluid spills. Ultimately the project is being designed to control and reduce the amount of stormwater from directly discharging into waters of the state. 4. PLANTS: a. Check or circle types of vegetation found on the site: X deciduous tree: alder, maple, aspen, they X evergreen tree: fir, cedar, pine, other shrubs X grass pasture crop or grain wet soil plants: cattail, buttercup, bullrush, skunk cabbage, others water plants: water Wy, eelgrass, milfoil, other b. What kind and amount of vegetation will be removed Or altered? None. C. List threatened or endangered species known to be on 6 TO BE COMPLETED BY APPLICANT AGENCY USE ONLY or near the site. The project takes place on entirely upland areas and will not affect the shoreline, its use, or state waters. The only listed species near the site would be: Puget Sound Chinook Puget Sound Steelhead d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site,if any: No special plantings are proposed. The disturbed area covering the infiltration gallery will be seeded with native grasses. 5. ANIMALS: a. Circle any birds and animals which have been observed on or near the site or are known to be on or near the site: birds: hawk hero agle, ongbirds, other mammals: deer, bear, elk, beaver, other Fish: bass, Qs4mon trout, herring, shellfis , other b. List any threatened or endangered species known to be on or near the site. None known. C. Is the site part of a migration route? If so, explain. Unknown. d. Proposed measures to preserve or enhance wildlife, if any: This project will help reduce the pollution load currently entering the North Bay area of Case Inlet. 6. ENERGY AND NATURAL RESOURCES: a. What kinds of energy (electric, natural gas, oil, wood stove, solar)will be used to meet the completed project's energy needs? Describe Whether it will be used for heating, manufacturing, etc. None required. b. Would your project affect the potential use of solar energy 7 TO BE COMPLETED BY APPLICANT AGENCY USE ONLY by adjacent properties? If so, generally describe. No. C. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any. The stormwater system being installed is gravity fed and does not require pumping offluids. 7. ENVIRONMENTAL HEALTH: a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so, describe. Only those associated with refueling and servicing the construction equipment. 1) describe special emergency services that might be required. Emergency medical or traffic control in case ofan accident. 2)Proposed measures to reduce or control environmental health hazards, if any: Normal construction safety standards and MUTCD Traffic Control Standards are expected to be enforced. The road will be closed during construction. b. Noise. 1) What types of noise exist in the area which may affect your project (for example: traffic, equipment operation, other)? None. 2) What types of levels of noise would be created by or associated with the project on a short-term or a long-term basis (for example: traffic, construction, operation, other)? Indicate what hours noise would come from the site. Normal noise from road construction equipment. Construction activity will be restricted to daylight hours. 3) Proposed measures to reduce or control noise impacts, if any: Mufflers standard on equipment. Restrict work to daylight 8 TO BE COMPLETED BY APPLICANT AGENCY USE ONLY hours only. 8. LAND AND SHORELINE USE: a. What is the current use of the site and adjacent properties? Current site is a county road and right-of-way. The adjacent property owner has converted the dead end road to a parking lot for patrons to local businesses. The right-of-way provides public access to the shoreline. Adjacent properties include buildings for local commerce. b. Has the site been used for agriculture? If so, describe. No. C. Describe any structures on the site. Existing structures include roadway, catch basins and stormceptor structure. d. Will any structures be demolished? If so what? No structures will be demolished; this retrofit project will increase pollution reduction potential within the existing system. e. What is the current zoning classification of the site? Urban Growth Area 0 f. What is the current comprehensive plan designation of the site? Unknown. Ut-bawu6("A g. If applicable, what is the current shoreline master program designation of the site? Urban Commercial h. Has any part of the site been classified as an "environmentally sensitive" area? If so,specify. Critical Resource Area; within 200 ft of Shoreline i. Approximately how many people would reside or vN,ork in the completed project? None. j. Approximately how may people would the completed project displace? None. 9 TO BE COMPLETED BY APPLICANT AGENCY USE ONLY k. Proposed measures to avoid or reduce displacement impacts,if any: None Applicable. 1. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: The project does not propose nor anticipate the alteration or change of the surrounding land use. 9. HOUSING: a. Approximately how may units,if any,would be provided? Indicate whether high, middle, or low-income housing. None. b. Approximately how many units, if any, would be eliminated? Indicate whether high,middle,or low-income housing. None. C. Proposed measures to reduce or control housing impacts, if any: None. 10. AESTHETICS: a. What is the tallest height of any proposed structure(s),not including antennas;what is the principal exterior building material(s) proposed? Structures installed are situated below ground level. b. What views in the immediate vicinity would be altered or obstructed? Nona. C. Proposed measures to reduce or control aesthetic impacts, if any: Re-vegetate any disturbed soils using native grasses. 11. LIGHT AND GLARE: a. What type of light or glare will the proposal produce? What time of day would it mainly occur? None. 10 TO BE COMPLETED BY APPLICANT AGENCY USE ONLY b. Could light or glare from the finished project be a safety hazard or interfere with views? No. C. What existing off-site sources of light or glare may Affect your proposal: None. d. Proposed measures to reduce or control light and glare impacts, if any: None. 12. RECREATION: a. What designated and informal recreational opportunities are in the immediate vicinity? Designated and informal recreational opportunities exist within the immediate vicinity, including but not limited to; boating,fishing, shellfish harvest, beach combing, etc. b. Would the proposed project displace any existing recreational uses? If so, describe. No. C. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: None applicable. 13. HISTORICAL AND CULTURAL PRESERVATION: a. Are there any places or objects listed on,or proposed for, national,state or local preservation registers known to be on or next to the site? If so generally describe. None known. b. Generally describe any landmark or evidence of historic, archaeological,scientific,or cultural importance known to be on or next to the site. None known. C. Proposed measures to reduce or control impacts, if any: None, although if any cultural resource or artifact is discovered during the project, work will cease immediately and a SHPO will be contacted before any work commences. 14. TRANSPORTATION: 11 r TO BE COMPLETED BY APPLICANT AGENCY USE ONLY a. Identify public streets and highways serving the site and describe proposed access to the existing street system. Show on site plans,if any. E SR 3 and Evans ST serve the site. Evans St will be temporarily closed within the area of construction. The project should take no more than two weeks to complete. b. Is site currently served by public transit? If not,what is the approximate distance to the existing street system. Show on site plans,if any. Mason County Transit likely operates service in this area, but the project activity is not likely to affect their operation. C. How many parking spaces would the completed project have? How many would the project eliminate? The project will likely eliminate one parking space to allow operating area for the filterra device. d. Will the proposal require any new roads or streets, or improvements to existing roads or streets, not including driveways? If so, generally describe (indicate whether public or private). The project is an improvement to an existing aging stormwater collection system. e. Will the project use(or occur in the immediate vicinity of) water,rail,or air transportation? If so generally describe. No. f. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur. The project will not change the existing level of vehicular traffic. g. Proposed measures to reduce or control transportation impacts, if any: Part of Evans St will be closed during construction. 15. PUBLIC SERVICES: a. Would the project result in an increased need for public service (for example: fire protection, police protection, health care, schools, other)? If so generally describe. No. 12 TO BE COMPLETED BY APPLICANT AGENCY USE ONLY b. Proposed measures to reduce or control direct impacts on public services,in any: None. 16. UTILITIES: a. Circle utilities currently available at the site: electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system, other. All are possible within the immediate vicinity, but the project will have no affect. b. Describe the utilities that are proposed for the project,the utility providing the service,and the general construction activities on the site or in the immediate vicinity which might be needed. The project will add improvements to an existing stormwater utility. The work will be completed by Mason County Department of Public Works Operations and Maintenance Division. 17. SIGNATURE: The above answers are true and complete to the best of my knowledge. I understand that the lead agency is relying on them to make its decision. Signature: Date Submitted: v/2s j 13 ESA LISTED SALMONIDS CHECKLIST Applicant Information Project Information Date: 8/25/2011 Name: Mason County Department of Public Works Name: Evans St SW Retrofit Project Phone: (360)427-9670 ext.635 Location: Evans St(Allyn,WA) Attn: Jeremy Graham Description: Stormwater Enhancement Prj. This worksheet was designed to help project proponents and government agencies identify when a project needs further analysis regarding adverse effects on ESA(Endangered Species Act)listed salmonids are salmon,trout and chars,e.g. bull trout. For our purposes,"ESA listed salmonids"is defined as fish species listed as endangered,threatened or being considered for listing. If ESA listed species are present or ever were present in the watershed where your project will be located,your project has the potential for affecting them,and you need to comply with the ESA. The question in this section will help determine if the ESA listings will impact your project. The Fish Program Manager at the appropriate Department of Fish and Wildlife(DFW)regional office can provide information for the following two questions 1. Are ESA listed salmonids currently present in the watershed in which your project will be located? Yes X No Please describe: The project will be completed approximately 60 feet landward of the shoreline. BMP's including silt fencing will prevent any potential impacts to the shoreline or waters of the state. The project should not have any adverse affect to listed species. 2. Has there ever been an ESA listed salmonid stock present in this watershed? Yes X No Uncertain Please describe: If you answered "yes"to either of the above questions,you should complete the remainder of this checklist. PROJECT SPECIFICS: The questions in this section are specific to the project and vicinity. 1. Name of Watershed: Kennedy-Goldsborough WR1A 14 2. Name of nearest waterbody: Case Inlet(North Bay) 3. What is the distance from this project to the nearest body of water?Approximately 60 ft. Often a buffer between the project and a stream can reduce the chance of a negative impact to fish. Mason County Shoreline Permit Supplement Page 1 4. What is the current land use between the project and the potentially affected waterbody(parking lots, farmland, etc.)? Evans St,Parking Lot,vacant land with mature willow tree. 5. Is the project above a: • natural permanent barrier(waterfall)? Yes No X • natural temporary barrier(beaver pond)? Yes No X • man-made barrier(culvert,dam)? Yes No X • other(explain) : 6. If yes to any of the above, are there any resident salmonid populations above the blockage? 7. What percentage of the project will be impervious surface(including pavement&roof area)? The project will not increase the net impervious surface. FISH MIGRATION: The following questions will help determine if this project could interfere with migration of adult and juvenile fish. Both increases and decreases in water flows can affect fish migration. 1. Does the project require the withdrawal of: i. Surface water? Yes _ No X . Amount Name of surface waterbody. ii. Ground water: Yes No X Amount From where Depth of well 2. Will any water be rerouted? Yes No X . If yes,will this require a channel change? 3. Will there be retention or detention ponds? Yes X No If yes,will this be an infiltration pond or a surface discharge to either a municipal storm water system or a surface waterbody? The project installs an infiltration gallery within an existing municipal storm water system. If to a surface water discharge,please give the name of the waterbody: 4. Will this project require the building of new roads? Mason County Shoreline Permit Supplement Page 2 Yes No X Increased road mileage may affect the timing of water reaching a stream and may impact fish habitat. 5. Are culverts proposed as part of this project? Yes No X . 6. Will topography changes affect the duration/direction of runoff flows? Yes No X . If yes,describe the changes. 7. Will the project involve any reduction of the floodway or floodplain by filling or other partial blockage of flows? Yes _ No X If yes,how will the loss of flood storage be mitigated by your project? WATER QUALITY: The following questions will help determine if this project could adversely affect water quality.Such adverse affects can cause problems for listed species. Water quality can be made worse by runoff from impervious surfaces,altering water temperature,discharging contaminants,etc. 1. Do you know of any problems with water quality in any of the streams within this watershed? Yes X No If yes, describe: Department of Ecology has listed some waterbodies under the 303(d) list within this watershed. 2. Will your project either reduce or increase shade along or over a waterbody? Removal of shading vegetation or the building of structures such as docks or floats often result in a change in shade. Yes No X . 3. Will the project increase nutrient loading or have the potential to increase nutrient loading or contaminants(fertilizers,other waste discharges,or runoff)to the waterbody? Yes No X . 4. Will turbidity be increased because of construction of the project or during operation of the project? In-water or near water work will often increase turbidity. Yes No X . 5. Will your project require long-term maintenance, i.e.,bridge cleaning,highway salting,chemical sprays for vegetation management, clearing of parking lots? Yes X No If yes,please describe: Clearing of catch basins and maintenance of filterra device. Mason County Shoreline Permit Supplement Page 3 VEGETATION: The following questions are designed to determine if the project v�,ill affect riparian vegetation,thereby, adversely impacting salmon. 1. Will the project involve the removal of any vegetation from the stream banks? Yes X No If yes,please describe the existing conditions, and the amount and type of vegetation to be removed. Removal of native grasses in order to install the infiltration gallery. 2. If any vegetation is removed,do you plan to re-plant? Yes X No If yes,what types of plants will you use? Post construction will include vegetation of disturbed areas using native grasses. Mason County Shoreline Permit Supplement Page 4 sp C3 �O E STERLING DR Z E JAY DR �o � v C9 � ?O� Q`G CT V jr 1%DERO p O ? O W 4(/ W R D m NEKTON CREE RD TRW AY DR MASp T22NRlW RY CL a _ GOJ O O 2-+ M tt 1.A�,O`L9 W E LAKELA ID DR T2 R1 1 F C KF F0RE51 D o O � �v l A1N O� FM OVN 2 YF CHA'O�V Q J JSSET RIDGE RQ Q- F N w RW OOD CREEKRD T HBAY <u pt y-,Z f PpEVWW LOOP 'rr E ,4 �`• � G i N �P mot(• 06668 Ptt(4v. U6-A W E A4514t 1 inch = 1,000 feet t PWkcu&VIS 1 inch = 0.19 miles cAvf S Sys oo , Ar- /74. 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I , •¢E , t� 1 /1 1, 1 l LCC OF; ACCESS LID / / I ////--------����\----EX.EC BLOCK O(TLOGYP)Y / `` \` \ \ \\ \ \ BYPI INSTALL FILTERRA(6.334.33) INLET CURB k TOP BOX 1 ` 0.5 Fool CURB HEIGHT RIM-17.50— i X CBI1YPE I 1 +8.02 RIV ELEX 17.48 17.94 ;(W ELEV\15.17 12'HE ! / I / / TOP OF BAFFLE-15.00 WITH-F lIM LIFT OF / 11 1 / I / 'l // / / / ` / NOTCH ELEV-14.80 �Y +\ 80'CO ROW it EX.STORMCEPT�STRUCTURE ` '\9 / `I( I / ! , \ , , RIM ELEV 1I.?I / I / / / / INV ELEV 13.92,18:W , \ ;T ! 1 `--'+�_ / / / / :NV ELEV t4.00t 78 SE \ WEEPING WI UHIY LLOW 1 '�-�'r,! / / !/ 1 E%.C6 TYPE 1-l. 1 \ \ s 10 1 ---- ,- �--- ! 1 EXST 24'IE-13.5(VERFY) 1 ` 1 RIN ELEV 18.89 , \ 61 1 ' ---' `/ 12'IE OUT-13.60 \ \ 1 INV ELCV 14.48 12•tNE (IN) \___ ' I , / ' / ` / h / �� INV ELEV 15.09 IB',V((IN) 18.05 APdi(OX DRIP LINE-7--�• /' ' / '/' / / �� / 3'THICK COW \ / \ELEV 14.28 ,5"kF(OUT) (� 1 / / I I / / / / T` FONFORCO W L \ /-; \, { `,' BOTTOM ELEV-1\` Wems 0111sa x"VELS 1E.40 ! ,\e'" BYPASC ELEV JY3 18'Nw \ 13-SF �\\ 1 N '\ \ / I / j .S / ,' / / / OBSERVATKIN ( I \ \\ I 16. 7 ; ! i ry / / /' /' WITH CAP 4-WOE— \ \ BYPASS MH(TYPE 1.(ING / / / / W/36Y SOLID LOCgNC LID ! , ' 1' 2'— RW-17.50 TOP-17.t- 1 \ IE-13.50(VERIFY EXST) �/`•. EXTRUDED ,' , (SEE DETAIL) / j / /' ,' ,' / MEMO- . cam' / ASPHALT CURS—( Y�y P�,'S1% ✓.vPi,'.,N .. 473 EXISTING L q;2-E4-, RESTAURANT 1+ PERF SINGLE W , • — _ POLYETHYLLEENE P Chi __—''/' . IE-13.45(LEVEE NOTE:ALLOW NO DRAIWE TO E1 ` --------- _ 1 UNTIL ENTIRE SITE Is STABILIZED \ \ �---- \ 11.oz 16 riW _ 1 INFILTRATI \ / (ASSUMED>LEV) l/ \ L ,' II �._ REVISIONS 22N AND RANGE 01 WEST JTY, WASHINGTON CONTROL TEE (ro eE PROVIDED BAFFLE: 3'THICK CONC 'x It t REINFORCED WALL 1 t / 1 I I l ` tl tt 3ro SOLID 1 i, 1 \ LOCKING tt ACCESS LID NOTCH WEIR $� it BYPASS MH DETAIL 1 t t SCALE: 1 RNA-17M �bi ! I / / / i TOP OF BAFFLE-15.00 LLD NOTCH ELEV-14M / IU di 2 z DTST 24'CIIP 24'CA1P Q 3 ELEVI t 12.4 / EXST 24'IE-13.6(VEIiIFI') 127E OUT-13.50 TYPE 0-46'CB BAFFLE 3'THICK COW H REINFORCED WALL •• '/ ,per' /// // II•` BOROM ElEV-11.00 z BYPASS MH SECTION A-A SCALE: 1•-2' Q J Q OBSERVATION PIPE OBSERVATION PIPE W WRIT CAP /r� 4' t/ Ld Z W TOP- 170t / N ELfig 11.9 / ✓ /�/��'—=VER TOP OF ROCK W/ Q V l NON-WOVEN GEOTDTTILE FABRIC // Ol1TLT / 9 v(n/ z SING 1W L WASHED � SINGLE wAI. POLYETHri E PIPE 12'MER-CONNECTED PERF PIPE Q 3 O EACH END OF TRENCH,SEE PLAN NEW NOTE ALLOW NO DRAINAGE TO ENTER INFILTRATION BEO I UNTIL ENTIRE SITE IS STABILIZED AND APPROVED BY COUNTY INSPECTOR. W I INFILTRATION BED SECTION z NTS JOB NO.: 2010 N, � DWD. DE,��N4 by1 r ow. TL DESIGNED B m r: DRAWN BT: JK CHECKED BY: m NOTE: DATE: °/v"° DATE OF Ex UTILITIES ARE APPROXIMATE ONLY CALL PRINT: 1-800-424-5555 BEFORE DIOGING&POTHOLE UNKNOWN w�G EX UTILITIES BEFORE CONSTRUCTION BEGINS. (j 2 OF 4 SHEETS SECTION 17 TOWNSHIP 22N AND RANGE MASON COUNTY, WASHINGTON CROWNED FLUME FLUME - SLOPED TOWARDS FILTERRA THROAT R,ERRA PRECAST TOP SLAB OW) MTERW RIEARa nLTOIRt THa�T uST'A!XB Ilte OPENING(iW) mwOPENINo .'. .•�..+-. _ :•1!w•L;a` C.-Iradba&1n11A61 -6.OPENING A-e'OPEN .5.'' .;"•�• ~..;F A^- ft s n - '7j 7::• A.Each fit ahe11 he am PRECAST EX NE1. PILTEPR/TNRotr) ah-nn due apjtr- RTEIIRA GIST-N-RACE Do WALL FUAC a fA1rtER OW) I#CAST �M be at the dtecion of m fTTP) AND SLOPED FLTEIRA", 1000110�PILTER"INSOPT5) BOX WALL B.if le Ft7lratam is Sim using tie 2x4 wood pr SECTIONS VIEWS OF FILTERRA IN TYPICAL FLUME APPLICATIONS &Ergo mpFiad()farm SEE BELOW FOR DETAILS NOT SHOWN C.The mit shell be place matching fie anal gm such that the utut and STANDARD 901 NOSING Compact Undisturbed (OTHER NOSING AVAILABLE eniimda� U al UPON RECUEST) engine apgov D.Outlet cormectiorrc sh • it + SOT modifications ttecetwu •a.;t,' TOP SLAB cRa, CLEAR THROAT ti+' L SF.�yD 1 E.Or-the IUht is act m OPENING ,,,N' Curb&Gutter Installation intact.R—c only tl +?s':,..••- ': Single Sided Flume fi[to rra slab.The top lid atlouf • ;+i •��..•�:•:`.•, shm*Rroutt tRTL)d tat boards eeal d m tie u .•.. IMPORTANT its ffud.OTEd dealer) - .a�, ••.� :J BEES A HIGHER HEIFVAMN s�dl-p&coed; r14W BTPABS RLm'. OTHER) M a (MP OR OTHER) IEpryL UNIT µy tianl 1'S • A., apeciflgion 091"S CAST-IN-PLACE .J' .. OR 6'0 PIPE FROM Sbultltres"•urdeas dit DEPRESSED GUTTER FILTERRA TO AND THROAT OPENING CURB(TYP STORM ORNN (BY CONTRACTOR) �--Ii F.(]vh and gluier caTn GRATE DRAIN Filt-'touts is at a f THROAT PROTECTION DEVICE ALL PIPE ahaf(drop fiat.cat 1E'. DO NOT REMOVE-LEAVE FROM STORu fziLre-dm damage /4 DOWEL BARS O 12'O.C.BY AMERICAST � II L.••. IN PLACE UNTIL SITE IS ,A, �" //,ODRUATIFN CRATE TO BE BEM AS NECESSARY BY CONTRACTOR i1•'.._ ' d' �{Ay _-7 G.Each Fil4tn'mut col PRIOR TO INSTALLATION OF FIELD POURED GUTTER t - STABILIZED AND FILTERRA f_ d- 1 , IS ACTNATED rystetn mg Pau r•'Ur',, gutter dow m titrnpfi TNROA R PRECAST BOX WALL Oi1PORTANT LOW PONE NOT USED FILTERRA FLOVLINE MUST BE AT A HIGHER SECTION VIEW ELEVATION THAN BYPASS FLM&TNE(DROP MET OR ar STANDARD FILTERRA THROAT OPENING OTHER) PLAN VIEW(MODIFlED) tiAcdadmddia nil- r P-N:•fix rmt:-' MODIFICATIONS OF DRAWINGS ARE ONLY PERMITTED i I-N•° 8Y WRITTEN AUfHOPoZATION FROM FILTERRA DRAWING AVAILABLE IN TIFF FILE FORMAT. a enxEx»v lard..".tans cova� iatewA(ar OONIR'CIOIm td-a...wTetlm t DATE: 02-27-06 DWG: CGT-4 +'i;. '' :••';:T' ekea A»spcmtruerta UVU L�aUU�VL�-�i-J L® �1`L'.�i -�_- _ .- .T^•r••,•:~iE:;� B.ACUTlaminelUda ibW Q FILTERRA(l)THROAT OPENING .•as., E� ,;.; AND GUTTER OR FLUME DETAIL PAT a.on.ns cwr.'sAO]Wlq Aoaml Ax0 a,sd3�2, a+ * Iu1RdM Malalat�r. vsr-M-IIAet OOIIETiFD 1'U /a--T A.gwh mvsNY uchD. anTFR rt nM1T CROnNnGP 1NG guPPlp aHua'ad wJn (BY LClrrrnL'raN) w Is b be iadlldCd it tte acorn.T n aa� i 1t Y': Uw..r P 00-oEra ue wrlatla d coma au aAINe 1 Pood_Ira.T •:I'•'• II/LL VIM SIn to II.OoaNl Nwa�1S m M ANnbU.Wr �li'= sAsuan arm r>LrtnnA R.Amm.l irtiahsl n.rmic Tb mail-1. or :ri" B/RMtm YC w�.Yed aut,,m� r•aP®amu inilde ado lad NaolsT I•acn ewt aru. IMPORTANT .Poch fllciud i MaMmrc rRL—n.o+vrc- FLUME SECTION VIEW BE AT A HGHCR DEVATION FILTERRA THROAT OPENING �P oR OHERj �: da. I B. POtermedi aw 4. ➢11rN heNth eti s. Raptac®eat of d. O:aaoed ddll 7. Mai- -D.TTn b*X.,p vd m Tystn lhan be d—i fmt R®PNy roofs•16 m'vU-grd pen of the ti y R EYI510 N S N AND RANGE 01 WEST WASHINGTON e� FlIterra Standard Plan Notes filterra Ci mlradb{&IaatillralloB A.Each ruit shall be oaR6uatod at the lomti-and 11cva6ou according to the sirs 1. CAICM BLsaS SW11 aE EVtaIRUCTED N ACCOROaNCE w1il1 ASM J. NNOCNOa OR CMOV HOU SM 1N VO PPE ours 4, Or �ab•�l RI—.flu the apprawed r7nvriTgR Any motificarinns to the elevation rx lncdirn slutcna(AAsnto wBB)LNo Asn aaO uNts OMEMwsE sawBx oN owl.Fur cArrJl BLSaI wart nuclaEss. .x be at the d-tion ofmtd approved by the Engineer. PL OR NOTED N TXE SiMMRD SPECIFCATOMB, 5>S 51wLL BE 24'FOR 4s'GITCIf B .2Y FOR a4'GEW 2. X.aNONIXIa N ADJuaeFHr 5(STDM SM4L RATE]•sea QDJwI.E 'w i7Jli.,C.B.,Je'FOR-?C a..b Fri W L.a. Y $ 51E>s N G1M WIN SHALL iwvE e' R.CLEARNICa SEE STD. oa n aEtwFFY NJIS awl BE B-FOR B.ff the Fil[etraa is stated beCae itshllasm,the top slab roar be placed on the txix a BASH orTus Iwanams aura ar c.e.:Iz'Foa ZY AVO w•u. We 2.4 wood sld to t any o Wmmrintion from the sale.All inboard ACED w X]EIauTMD OB.De A—OA tNEJlO BRRX coN a tlt 0-.FRAYEs A14)OWES OR CO.ERS s—BE �y_ pa6seB.O �tg ed. p[eYen Mal A wN OF OrS—0.OID BEVVEN 111E AST sTEP AND TOP ADemIM a MM 4L r.M OF TXE sTFJFDIRO SPE6I Rs. �l`.bwIBS9"" fittings supplied Cifany),most be left in place as par be dawy. a DVE fNee{n oRAOE. Nawc sO—swu BE.Nsxm To AssuRF Xox-Rarest t pG J. Nl RENI[AST-N-PIAeE laslcoatE 9TY11�C1A55 40W. art wnX AM arafR Power 4U1. C.The Tait shell be on a,.,�..�.s.u.p,��ac�.t,ead solo Bde with a s E B.-6-ioch el base NL vREcur coucREE tuwl 9E ass 4aeo. 7. Au BASE RENFDRLINO stm swu RAVE A uw.MO PI """! �'� { RECAST fl—$nlrl 9F nquRfD wM Laralas W Sr IIOTII OF ao,000 PSI MD BE PACED w TIt WIRER NVf matching the final glade of the curb line m the area of the unit The unit to be placed NflOCNOurs RNOCNDYIS swlt FIA.E wsu TNCNxT:sS of 2• Nr aAq won T'mn.aouuXCE. such that the umt and slEb match the da of the cart in&a area of the mid uN. I.NUBFD NNOCNOUR YFED NOT BE OROJTm P a YN.soE SEARNO-VE S-L EW 3.3.POUNDS PER top ) Mal R U,.IMILT. Peas sVW1 BE dri—m OXLY N Compact wdisnahed subgtade materials to 95-1,of usso m oto density at+1-2%of fAL�T�Blwoawurs arras arrFmwss+PPRom a+TNr sowRE f°°T. optimum-s-Umlutable material below sob-gad.shall be replaced to the site .ogmae2s BM-BL g n D.Outlet comlectieOr shall be aligned and soled 1n meet the approved dravrirgs with ,R asd modifications necessary W mat sift cotdifias ardlaal regulations. E.Orme"a mrit is set me irdemRl wooden faros and protective axsh OD"'rear 1>r left f i lte«a int.d Rove oily the=� cn aoy-d sh(pping blocks bet—the box and tour ev c as Ya u slab.The top lid should be sealed on ox to the b section befett backfilling,using a rnm Lu shrink grouq bnpd[Dbbex or smiler watatroof said.The boards on top of the lid and boards Sealed in the miV,throat must NOT be rerneved The Supplier(Aren.ast Or @ w its authoancd dale[)will remove these sections at the time of acfivahm Eackfillity should be perftmmd in a earzf l mmumz,bringing the appropriate fill material up im 6"lifts on all sides.Precast sections sball to set in a manse that will result in a wauatighl jldtd.hi all mstmo:s,instxlladun of Fill re aril shall curifomu W ASIM evYb - ms'w arse �n g spedfiwtion C991"Standard Practice for Imstallstion of Underground Precast Utility F 'y' ties r"rznfD F'us ePL )u Structures".unleas directed omavrise In tonal documents. w Y K F.flab mid gutter-,Mnsclim(after.present)shall ensue that the flow-line of If. DRAIN Fdterraar units a at a gratu elevation tlmn the flow-line of the bypass stiuchut a t9 OUTFALL PIPE relief(drop toles,cob cut or snmlarj.Failure to comply with this guideline may cause a FRO u STORu f dbre mlNa damage to the Fdtra emiTomn.mal device. DRAIN GRATE w°XYi=sr• '. O G.Each Filterre uritmust receive adequate imgatioa to ensure survival of the living o;w._ar, 0 syftm during p.dods of dd.rwcztfi This maybe achieved through aptped system - :r n°i,..-fr * N,^'w^F*r ,• gutbn flow crthroapiu the tree grate YaIRw 3'r filters 1'daC. C ' {R A.thatba �-un� Iwta�auE •LY�ala r1 i K W Y A-1 - Of Th 1,'A-'nrit is P,I-ed O111 by 12,Supplla- P d-i, Fopooc -fm llltaO roll"wtwn and submwera clean ow cost na p O-u a :w oai aim�w ru n•mNE eNBNa a rce until die pr j-s is Pg Oabdi d and darned(11u1 0.»u nil a cai .1°'of K ow IudNetmg,grass tear,wet pump and a6at""um' completed).DBaCng the 7 claake Dfmnsmtctleal mueTiW emraina6OF me rift n sYstm era aball he L ta), Alm's*cnwucdmnd ID ducVc the Vcucive throat aadtoppl.Io.B.ActiwEminclw6 inlad]etion ofplPrt(s)and ttulch laym u neawmy. Im4tded Malalaarmn A Each am Wy u.I.0 d 114-0 mil is w be t anuzited by the S.pphar,or a LLJ S.7,6.,.Fp-.d-U-L.for.[®luau paiad arI—The oust afada YaTrz TYPE 11 CATCH BASIN Q is to be tndmded in due Rio of each Fill-V Tuft O t uied.ei—wmhads NTS OR Dent[ art awd.H.dame ost upon rzq,N,t m R.ninbc clod lTlwnlienP..spoulu afYTm+1.d.>fup b.L,u l i IR,.&t vi ay L� 1 1 eR udR d 6 .1 .&t,a fin vat aim 1 ales,pp o wvtar ball 11>al rosy �f� w imldasle d1e sal waif lee fit sieil h 17s me sslml b;-r�fnirg rxiTanivn 1wfEWc. `(/ 1RT g C..RRdbtndudelMdldenuuew1--nfftfall arch. Q W wwarc Ytnr ^t°I^F PIER F]I.VAIIDN Z 1� OTHER I. F-ig. .,Bit,- ��OTHER) 2. Fweign aNais,silt'lTulfi AtrriRh Tvm'd 3. Fwar media nWpationsndrmbamRe esmy Q 4. PIus h.11h w•ahvalan-d palming m Teplacemem as ne awy ((� 5. P.0,cemsutofmndh V/ 6. Dsposel Mill wfic—snNs.ran 7. M.intmrul.s-d,MA-dRM RURBd(Tap Rl m'iONt yxn mF-Io Q D.Ibc bcpjmirN and mdhp dam of @rypgds oU*.6-to mW.W.the mmll�d U) n5'd.m shed]b:dawmm<d b/the hpplia et 0.time The By-is-fi-d,0--- muel proOpdy notifS•t)e Smpph.Df u y dma.Rc m d c plmt(1 which roradtltc(s) an umpal pw art&bbrc a-tndmpl.ay. Q I U Z O JOB NO.: 2010-800 DWG. N D BY: NG_CMLO DESIGNED B7: SR DRAWN BY: JN 3 A CHECKED BY: SR DAIS 8/23/10 NOTE: DATE GF PRIM: EX. UTILITIES ARE APPROXIMATE ONLY CALL 1-800-424-5555 BEFORE DIGGING& POTHOLE UNKNOWN -03 C EX. UnLITIES BEFORE CONSTRUCTION BEGINS. 3 OF 4 SHEETS REVISIONS NO. DCeC IPnON DATE �" SECTION 17 TOWNSHIP 22N AND RANGE 01 WEST " SCALE: 1"=,C' MASON COUNTY, WASHINGTON n `I ' '' SEP jr 1 ZC 426 W ,CEDAR Ivt\ `\ ,` / 1 ;; /` -�� T l�.r SITE If 1 J 11 1` 1 1 �,`✓, o� E VICINITY MAP I f,Y / l I 4SP E 0,1I I 1t ,' SITE ADDRESS: EVANSSt € EX. ECOLOGY ALLYN,WA \BLOCK (TYP) PROJECT DATA V :3 / \ \ NEAT SAWCUT do REMOVE ASPHALT AREA_ / 1 1 , 1 OWNER FII TERRA CONTACT: ! l\ 1 \ J FOR REGRADING / FILTFRRA REG. MGR. Ix 1 / i MASON COUNTY PETER EVANS A' g PUBLIC WORKS DEFT 11352 VIRGINIA PRECAST RD. I \ 1 \ INSTALL NEW EXTRUDED ASPHALP CURB 1 /� She W PWA Works DR Shelton, WA 98584 ASHLAND,VIRCINIA 23005 i I '' , /' ' / 503 267-3604 Lo 1 1 1802 f RIM ELEV 1748 , ' // / OWNER PROJECT CONTACT ,1CGIGN ENGINEER CONTACT: \ \ ! 17,9 .J" -y INV ELEV\15.1, 12'NNV� / ! L- ._--/ ATTN: LORETTA SWANSON STEVE LEE, PE, CESCL, MS \ , 1 V T \ [;" "_� ASPHALT CURB di 1 , l 1 / MASON COUNTY PREFERRED ENGINEERING, LLC = N pppUUU��� / PUBLIC WORKS DEPT PO BOX 25422 NEW CURB J I , / / ! / 100 W Public Works DR FEDERAL WAY,WA 90093-2422 = 98584 NEW ELEVATIONS ! / / / / 1 e r �• Shelton, WA (206) 501-5708 = PLACE TES'C CB INSERT\ ` Q 80, COUNTY ROW EX. STORMCEPT(R STRUCTURE �1 I 1 ' Wes'CONSTR �/ / , , / / / I ` 1 RIM ELEV 18.59 1 1 1 INV ELEV 13.92/16:W \ \ ,ti ! , I INV ELEV 14.00118 SE \ \ 1 WEEPING WILLOW 1 ! EX-CB TYPE I-L 1 L \ 1 \\ RIM ELEV 15.59 \ 6ti iO , �� //! / CML SHEET INDEX INV ELEV 14.48 12'\NE (IN) _ / /// ' / / �� / C-01 GRADING AND TESC PLAN z \ 1 INV ELEV 1509 18'W(IN) 18.05 APPROX DRIP LINE SLOPE FROM BACK ''' / ! / / / / **** \ \ t\ \ELEv u.za 1e' {E (our) /— TO� .8 e / 1 o°r /' // / 1 C-02 *****DRAINAGE PLAN Q J \\ r I''// WLTRAT1oN FACw J ,fY / 1 ,�P // / C-03 ***■* DRAINAGE DETAILS ���\ • ' •- IB.aO \ , , / 1 C-04 ***** NOTES AND DETAILS a // •-- ✓ % i !' �r i SURVEY NOTES: U Q \ / SURVEY BY MASON COUNTY GPS CONTROL NETWORK / ♦\ — 6Rq��� I / I / I I VERTICAL DATUM: NAVD88 W R�MpyE I$ RIM N� EV 2.Xx IS'NW \ ` 1 /' `\ / �% I J VRfH GRtiS SILT FENCE(SEE D/1fYD / r� / // / I� .X% 19'SE `\�y 1 1 �� `\ / PLACE TFSC CO 16.5 I S S ROSEED O,RtLAID ry/ // ,/ / // / I I \ \ I INSERT(SEE DETAIL) PRIOR TO _._CONSTRUCTION C" EXTRUDED // 1 i.98 / ,/ // 0 \/ 2 Q 18.73 ' c/n V J EXIST.NG `\` / \ 1 / /' / / / /' / // V / RESTAURANT \ /---19--- I© \\, \� \\ '///// / UTL 7 1' C P 0 ^` _SLR- 1� i i 18,tMP OUTLET` `\ �`� `i j o I / INV ELEV` i.02 18' JOB NO.; m10-e00 DWG. NAMEWYN-CMLDMO J // /, /! J , • DESIGNED BY: STL DRAWN BY: JK CHECKED BY: SR •. NOTE:E: wDATETE:OF 0/24/10 EX. U IUTIES ARE APPROXIMATE ONLY CALL PRINT: 1-800-424-5555 BEFORE DIGGING k POTHOLE UNKNOWN ��� EX. UTILITIES BEFORE CONSTRUCTION BEGINS. 1 DF 4 SHEETS ' REVISIONS II SCALE: 1"-10• SECTION 17 TOWNSHIP 22N AND RANGE 01 WEST NO. DF3CISIlON T[ 9V MASON COUNTY, WASHINGTON 10 5 0 10 00 CONTROL TEE - \` / (AD R) PROVIDED ' LATE \ BAFFLE:�aW� , \ 3'THICK CONIC try! / '. I , 1 / 1 REINFORCED WALL f / i 1 1 , \ LOCKING SOLID r P P G;E OF� �' l I /'1 1 `\ \, ', ACCESS LID HIM ,/ , \ I WEIR a EX. ECOLOGY BLOCK (TP) BYPASS MH DETAIL SCALE: 1°-2' y INSTALL FILTERRA(6.334.33) 1 \ O W/ INLET CURB h TOP BOX / L O 0.5 FOOT CURB HEIGHT GRATE TOP ELEV 18.02 ! I I LV - E Our-15M v- - — " x. C�IYYL / / / /'/J .1, /' �W 5 B G \ 1 18.02 �� RIM ELE1( 17.48 / J / / / /' // \ I 17.94 -i NV FL FV\15.17 12'HE / / / / / TOP OF BAFFLE-19.00 1 i WWW��� 7 \ 1 `(FIRLT RIM a"17AD / / / ! / / 77�TS iVVV��� T l/ \\ I WrIImF11 t EV NOTCH ELEV-14.80 \ J , � / i\\ \ �'COIMIY ROW , EX. STORMCEPTOeR STRUCTURE ! 1 1 ` J / / ' J / RIM ELEV 18.59 ELEV 13.92/18"W INV ELEV 14,00118'SE ELE�I12.4 WEEPING WALLOW J 1 EX. CB TYPE 1-L. 1 \ \ E lO EXST 24'IE-13.5(VERIFY) ` 1 RIM ELEV 18.1019 I \ qy I .---/- ' - --�� ! / 1 6 / 121E OUT�13.50 \ 1 INV ELEV 15.09 WINE(IN) \--- \\ I ��// //' / �^ / / 7tPE -48'CB \ ' INV ELEV 15.09 18"(IOU(IN) `TBAFF�' i \ ?8.05- OX DRIP LINE—>--- / J J / / J 3•THICK CONIC \ / INV ELEV 14.28 t8"§F (OUT) I / / REINFORCED WALL BOTTOM ELEV-11.80 z �\ ♦ 1/ `\� � t8.40 ,\s�� I w OBSERVATION WE� LLS _ I BYPASS MH SECTION A-A Q J \ 1 1 SCALE. 1'-2' \ / "to I / 1 / 1 / 1 Nw 8"SF ��♦ I I \\\ \\ / I 1 .5 / I / / /r /' // // �6.OBSERVATION PIPE 0' SE ATION PIPE W \ I 6 / i N / , , / WTTH CAP WI 18.367777 1 BYPASS MH (TYPE II-487 / J/ / 4 2'� 1' Q I ) 1 W/36'0 SOLID LOCKING LID / , , / I RIM-77.50 TOP 170f z Li IE-13.50(VERIFY DST) ' / / p' / / - (V EXTRUDED / l/ J / r♦ t L.L/ A V (SEE DETAIL ' / ASPHALT CURB—� �.�„y �. Q / ( 1198 /i // / �n' G' !. ' 18.73 ♦` \ �B^ / ,/ / / / 70P OF ROCK W/ EXISTING ` C4,o I / / / // ,/' /� -rsz- NON-WOVEN � V 1 RSTAURAN7 / ♦ \`\ `\ ; / / // / ,/ / / GEOTEXTILE FABRIC / / \ ♦ \ \ I I '\ / / 2EA-- 12'PERF z / / / ` ♦ \ , ! 1 (/ ♦`// SINGLE WALL WASHED GRAVEL 1 POUETHriENE PIPE. 12' IHTER-CONNECTED PERT PIPE Q / \ - IE.13.45 (LEVEL) O EACH END OF TRENCH, SEE PLAN NEW / / \ ♦\ `�`\ .\ _----- \"- NOTE ALLOW NO DRAJNAOE TO ENTER INFILTRATION BED `♦ / •� \`��� ----'\ I UNTIL ENTIRE SRE IS STABIUZED AND APPROVED BY COUNTY INSPECTOR. 11J 16",'C1AP OUTLEI� \`1 u INV ELEV`11.02 18"N4h, '��� \ INFILTRATION BED SECTION /`` / ♦ / (ASSUMED>LEV) � Ni5 JOB NO.: 3010-E00 DWG. NAMEWALX LDNO DESIGNED BY: SR DRAWN BY: X CHECKED BY: Sri NOTE: DATE: 8/23/10 DATE GF EX. UTILITIES ARE APPROXIMATE ONLY CALL PRINT: 1-800-424-5855 BEFORE DIOGING k POTHOLE UNKNOWN ��� EX. UTILITIES BEFORE CONSTRUCTION BEGINS. 2 OF 4 SHEETS n s REVISIONS SECTION 17 TOWNSHIP 22N AND RANGE 01 WEST MASON COUNTY, WASHINGTON FLUME — SLOPED CROWNED FLUME �j nuiFRR. TOWARDS FILTERRA THROAT ' Top eve ) � filterra FILTFAPA THROAT TDP SLAB ,r�p 0WNNc taw) m, h6•FLTERRA eN'"a8 Flllerra Standard Plan:Voles MItMT OPENNO R .J;'A3r Fr'(1PEN i. a CPtNNG Cer.4ndkAa67DFWBeaun ( / .,� •A'.., CAST—PLACE 7 FUME A GUTTER ( j PRECAST .�. •,.. .. Doan ncs"EED,THE A.Faeh wit shall be oarmsatcd at flc lomtions and clevatiarw woordiTg IO the ev him 'SINCy SON wu `FLUYE a a DUFFER R `(TYP) � ..•DOM Ali—to the aplwnvad draairgc.Any mrcifimtimc to the eI—ti.O OF IncaNrn sMP 1 c T e(w�mo u�i uej AEilo aiw ue mats [sarN w s ovx�0.CU wu EOru PIPE Nou°N°f RIP) (CTtOrIlEO Ala)sLDPm FLiFIrM lx M the 3recton esf wd apaoved by the Ergirteu. PtN4 ore NaTEO N THE r~D VECIF A Os S. riff S-L eE rP FOR b•cARh aysH,rr FOR ar•oe., by ao•FOR s•Ca•se•TOP Tf ce.w—s• TOWNtD nLTERW Trnans) an,r1At1 NSHoI.Oam N P Mss sE sA`H erxi nx.E r Ira WIsTr. Oeru,x anasnt rota lsw.t a a•FOR u•,s.•,iro eo• B.If the Ftltarer is stored before ahcullrtex file say N G1DH a+ax aswa NvvE e•w.CLIAWIDL Sa' C..:If Fat 11,AND w•u. top Slab Nlft be placed m the box CAtp1 w9N pF:u5 HNegfUlri Sfut.bf u,bv the 2x4 wood provided,to pretaht my omnumnakah from the tate.All internal uaD w K`uaM—DRaoE Rea:evt Iav41i Tres(c Cars a anH b y,,Ra,a,„1D�s a CPCRS 3N x as sties SECTIONS VIEWS OF FILTERRA IN TYPICAL FLUME APPLICATIONS NIN A MN OF ore NNDHDa INTME[a THE—STEP HD Tm D E sr".T05 a M y1,�smd�b. �la� fittags supplied Of any).moat be fare U place as pa the dagvey. a r�F1 sHO oR.DE. wT�aGnMsuU.—saua 1E—Saxe v AsSualk NOH-Rualac SEE BELOW FOR DETAILS NOT SHOWN y RED _ � E R FT9 r4rAt,9F Au PrEcvr cacRrE aHAu s aAas•DDo. C.The,Dit ahe11 be plied On e fahcurt h d aulrg:fde with a FRldtatal riiadh[Qevd base T. Au SASE RaRDa'DNc sum Savo ACNE A TsE met the final of the ch¢b]ire in tie area ofthe ML 1Le Ixlit to be •. PREGG,aPas sou w FtsN iMM PSTII cue OR sane[�tN�a�taNa,Pr AND PINGED N M I/PEII IWi �1B planed rµDexWIS. ID1Dcneun.Hsu MD`r+ta TLITED, a f STANDARD 90'NOSING su is that the unlit sd top dsb TTadch the gale of the sorb in the area Of the mot N aNusEO aNCT. PCs aIIs Nor EE a ALLE) . a wN.$Da auPNc—E S—mIML 3-W PDIRwe PER nPl R LEFT IMADT. PIPS EtNLL R aaSTAlam ONLY N Compact tTIdiSMbed sub-grade mataiah to 959:o[naxirmm derety at+l-2%of IAcrcRr allouours taaEss ana:RPa�AmROWn N Tsa �+�`EDT. optirmn maues- Urslitebk rmI^•1 bebw subgrade Shea oe re:placed to the site OTHER NOSING AVAILABLE ExcauER UPON REQUEST) i . .. erptisxeh appwd. Pa •+ PIEOISI D.0,A-t comsectaus stall be aligned and seated to—et tide appwed ck—up with <-6•CLEAR'HROAT •F'•r�'• k•:: : 1�UM MOMOaUM necessary to ri site miditivn adleal regulatca. y� DPE G v.a•�i,A:. '"a l E.Once the Unit is ere tie internal Wewden tOrms and protective mmh ower=9 be left •r_ - •'!f.•1•: Curb&Gutter Installation intact R—C oily the tmupurary weodaT ship"Hooka bchvmn�c box and top ,`^•• •.a?s�.�e:t Single Sided Flume f i It a rra slab.The top lid should be Reeled onto the box•eban before hack5llitg,using a non- Q o� R•• n uFa _ amloe W,' •. shtick waide butyl eu nit'a stalls Tt NOTo a serf.The The S pp top A s e ca end •,• ', boards eededm Uha vat's taint mot N07 be removed The Sthpplim(AmeaKest OF :` u a r w .. W LOO11TA11► its rout haized dash)will rethtove these sectim at the time of actvata-Backfillinir tF o r1a.a W. !M. t' ••, E AT A I HERE ATIO should be perfomled in a cercfhI Frain er,brut"the approps ate,IM ruaten.1 Up in . •4 . •, BE AT A HIGHER ELF/ATgN °• .' TuIAN arPAss IUDALNL 6"lilts on at sides.Precast siOnas shall be set in a maihaC that will result III a r � �i;• ICn a .•d• ♦4 (DROP NOT OR OTHER) TERM LIMIT W alaUgldicutt.In all i at—es,aasiaLadm cf Fat-ew unit ahall auhtcaTn W ASINf CAST-IN-PLACE •1' •• ispeciflardon Srtuclura"11Nes1 91"Standard d Fe!e CCR asuil ad wit Of U. �PtxYt Utility vl r w- b vuw�rrss,srfn ru W 0 DEPRESSED CURTER '�' ' OR 6'1 PPE FROM �t AND THROAT OPENING ,a ( //ALTERRA TO (BY CONTRACTOR) CURB TYP STORM DRAIN F.(Lrh Crest coTwfnheti(RI where lPma ( p_Aerltj shall em;Tre that the ttswT-line Of the GRATE DRUM FtEvnr ThTTite m at a gRxter alevNim 11=1 ft flaw-Iwo of the bypeas structure a � �(A THROAT PROTECTION DEVICE a --- - relief(drop ads,cab M x simhlarj.Failure to lv with this ddinse "1{'•i DO NOT REMOVE - LEAVE ,OUfFALL RIPE , gm may Carle /4 DOWEL BARS O 12'O.C.BY AMERICAST a.:y'., -- /FROM'TORV fanure anNm dtmege toile FBtna emimwDemal hevice. IN PLACE UNTIL SITE IS 1/ TO 1#BENT AS NECESSARY BY CONTRACTOR :'�la;. =LOW PE• DRAIN CRATE Z STABILIZED AND FILTERRA 5� ?• __ s• PRIOR TO INSTALLATION OF FIELD POURED CURTER r //e G.Each Filtem"ihmt must receive adequate ton ie ensure survival offlte h O f s ACTIVATED D ga r hm gt s pied ayafe[q a�a N •' ¢t n awN;'r re.N Pm' Z ::•u� aysm„ata rodedekieralatta.lhiamn beeDhieYea - `Ni R inter flaw m through the tree grate > x PRECAST BOX WALL NT t IMPORTA LOW PONE "et"z'''y: �:�; �a•�" FILTERRA FLDVLINE MUST NOT USED of vAa '•• ••••s ; BE AT A HIGHER SECTION VIEW ELEVATION THAN BYPASS E A ewe°r ne Aa aw.N•. aww FIOVLTNE (DROF TH.FT DR E °• i terra .- ,IY-Fa'�•-A S STANDARD FILTERRA THROAT OPENING EITHER) PLAN VIEW(MODIFIED) as lLa"a ewe ° A.AM—Of.be raterns•wit is perfumed ONLY by the Suppler. Frd—is tespormZde f.mtc a filet preacim and subutpes ekm oa cat Th s pours MODIFICATIONS OF CRAVINGS ARE ONLY PERMnTED oTsr_w-Fua Ras Ara roF Sue torn.w BY WRITTEN AUTHORIZATION MON FI�ERRA DRAWINO AVAILABLE IN-IFF FILE FORMAT, aura a—arc a cwHa comrerxe oval she pr jar.sib Us Puty wb'Jimd end cleated(ail PUE—Ur C0Y1aCNIM Iwd.cafea.19—eovv,f.1 paTvw and street--piTlp Care ay<otrpl--d),rcptng the a_Ts DATE: 02-27-06 DAO: CGT-4 r chat«ore nahatah m.tmaL.<mr n:nms cc-item° ernCaret avt x damage me pr—eo ,h—1 and tap plaka. UVU/S�aVLrvT�U® _ • �__�__� _ _ T , BAcavaam ttrlvdn isnCadm ofpica(s)sM trn:lchlaym Mrecesery. _+ :• I FILTERRA6 THROAT OPENING s.y AND GUTTER OR FLUME DETAIL .f 4' A _J - J Caprripl D Ran M,\cm�t NID 4aa9 a a � •• °w/n:w rear.•ov m aw-m mt� , I larraded MaYreaarca c ion.w I.c.aacns�w u-w P.a ss/Ir.w rAc.seen.m,w uN, ion.N Day ofncnw Core Tr rTa Q 4 R�•as� m.w ore.Psmxa Ia s-aw. O -N-q DEPRESSED a- /a- A Each cros3ly—Wkd h'aarnt ant u m be naiodued by tlN I1Wp(ier,ct a S��ad—d '.fur..�a��1�°'I.eU°t fU° TYPE II CATCH BASIN W is all to-itded in if.R aid Rim of s Nlturr V W.Ldendad.d•t M-—tram 0 no.F"a A"".""r,H u.°,fPgo.o�c C i u/Iar sarnEcmN awz as wwatte a exto oatuposs request. NITS nor Rmc-1rAYF U,cE UsOL ERE es rSroDDPn aWa•+r ac.a„areas r �. .. " soauao.ro raTrnP. A AFmrl iFdalrrl minlernuen aaen..+„f.m am:m Itf(7)daaidat nsb The Yi els w airrsw,mx w x {.s�`. a ACrMTFD ore adaAu W sswml-.th ycq.Sit aim k daU vp at.witNN kW tot aTqLj a Call Foram aunu .T...:;. ads.k slksd—Ja TbefiilswLhdle m.yalm:byrmAirg ceasaise lwdtit4c. ne,r am.su BEAN* < W nLTE RRA IEOALC Nay Poch McT.ded Mai A n mee v Aa a toss rea frl Oss E m=a. FLUME SECTION VIEW BE AT A tarsrn ELEVATION FILTERRA THROAT OPENING WAss nor E I. F511ena•u•nllmpaGi,N z (DROP IN.ET OR OTHER) R. Fiume t—.Pit.tadch A",b_so 3. Flier Trsedia—Inarat andrmhage assecessty 4. Pas leewlh awhMm am prsaOR Or OTsI en:A.wleaWry N �.S d. Rapl.ceaat ofamlct LL v 6 I.1—al Dfat.'alant—rcfI--itar T M•intrnna recordotdmed PM sl.Ned(TaOs——IIPNe qas--twr) 0 D The I,pelrp ad ODIJOV dam of Suppliers cts.Wdm a,mu,Ntr,the i UA /1 ay, shah x d��a ><d by the srpltia et the dale ex SraT�,s wtviiad 0— 0/ inal pn'TWtly nodfy the Svswh¢of any eloDaac m d.plans(.),wldab rcndtssc(s) an bmvel pan ONE,b-tenhas b*mlegy. z Q w � 0 JOB ND.: ZOID-400 DWG. NAMCMVI-CMARG DESIGNED BY: Sit DRAWN BY: .RC CHECKED BY: SR DATE: SM/10 NOTE: DATE PRIM: EX. UTILITIES ARE APPROXIMATE ONLY CALL 1-a00-424-5555 BEFORE DK*ING R POTHOLE UNKNOWN �,%��/a7 EX. UTILITIES BEFORE CONSTRUCTION BEGINS. 3 OF 4 SHEETS