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HomeMy WebLinkAboutStorm Drainage Analysis - PLN General - 10/30/2016 RECEIVE OCT 1 D 2 2016 615 w 'vdet sir STORM DRAINAGE ANALYSIS 2"d Submittal for 150 E. STRETCH ISLAND Rd N. - BOLES RESIDENCE SITE DEVELOPMENT PERMIT Client: Gerald and Wendy Boles P. O. Box 224 Grapeview, WA. 98546 (360) 551-1051 By: N.L. Olson & Associates, Inc. 2453 Bethel Avenue SE Port Orchard, WA 98366 (360) 876-2284 Project# 9385- N LEA U4 WAS37919 y W� / C/ rl October 2016 STORM DRAINAGE ANALYSIS for 150 E STRETCH ISLAND RD N. - BOLES RESIDENCE SITE DEVELOPMENT PERMIT TABLE OF CONTENTS I. INTRODUCTION....................................................................PG. 1 II. PROPOSED STORMWATER IMPROVEMENTS.............................PG. 1 III. UPSTREAM ANALYSIS...........................................................PG. 2 IV. DOWNSTREAM ANALYSIS................... PG. 2 V EROSION AND SEDIMENTATION CONSTRUCTION IMPACTS MITIGATION (WITH SWWWP NARRATIVE).........PG. 2 VI. DESIGN CALCULATIONS: A. PARAMETERS............................................................................. PG. 9 B. STORMWATER EVALUATION............................................ PG. 9 1. PRE-DEVELOPED CONDITIONS...................................PG. 9 I'I 2. DEVELOPED CONDITIONS......................................PG. 10 3. RESULTS.............................................................PG. 10 4. DESIGN DATA.....................................................PG. 10-14 APPENDIX A- LIST OF FIGURES FIGURE I - VICINITY MAP FIGURE 2 - EXISTING CONDITIONS MAP (SURVEY) FIGURE 3 - DEVELOPED CONDITIONS (SITE) MAP FIGURE 4 - TESC PLAN FIGURE 5 - DEVELOPED CONDITIONS STORM PLAN FIGURE 6 - SCS SOILS MAPPING FIGURE 7 - DOWNSTREAM MAP ii 150 E.Stretch Island Rd N.-Boles Residence Storm Drainage Analysis Page 1 of 14 I. INTRODUCTION: Gerald and Wendy Boles are proposing to construct a single family residence on a 4.89 acre lot located at 150 E Stretch Island Road N in Grapeview. Approximately 2,300 sf of building and 2,400 sf of driveway are proposed on the property, along with associated well and septic drainfield. Permits required include forest practice permit,building permit and permit for the well and septic drainfield. Other permits may be required. The site is situated in the Northeast Quarter of Section 8, Township 21 North, Range 1 West, Willamette Meridian, Mason County, Washington. The tax parcel number of the parcel is 12108-75-00080. Adjacent residences include a single family residence with outbuilding to the northeast, and two residences with outbuildings to the east. No residence is to the immediate north or south and the residences to the northeast and east are 250 - 350 feet away. No adverse impact is expected to any adjacent residences. The USDA Soil Conservation Service (SCS) classifies the site's native soils as Harstine gravelly ashy sandy loam, 6%-30% slopes on the upland, and Lystair sandy loam with a small amount of Bellingham silt loam in the lower areas of the lot. The Harstine soils are considered moderately well drained, and are classified as a hydrologic Group C, the Lystair is considered well drained and is classified hydrologic group B, and the Bellingham is classified as hydrologic Group D per the 2005 Stormwater manual for Western Washington. Soil classification C is used for analysis, since the disturbed areas of the site are in the Harstine areas. The soil logs in the slope assessment performed by N. L. Olson and Associates in August, 2016 confirm that the soils nearest to the area where development is proposed (soil logs 1 and 2) show brown loose to medium dense silty sand with gravel, similar to what would be expected with Harstine soils, and the sieve analysis of the soil sample taken from test pit 1 shows approximately 19% fines. The depth to consolidated glacial till (hardpan) is low, only 2-3 feet below grade. Permeability for this soil is moderate to the hardpan, and very slow though the hardpan. Erodibility for these soils would be moderate and settleablity moderate to low for the silts. The site, in the pre-developed condition is currently forest in the area of improvements, with brush in the middle and eastern portions of the site. Slopes tend to be 10%-20% toward west on the east portion of the site, with the center low area sloped gently to the south. A wetland has been identified on the site and is delineated on site maps. Please see wetland report by Wetland Corps dated April, 2016 for more information. The disturbed area is proposed to be at least 200 If from the wetland. No other known critical areas are on or near the site. II. PROPOSED STORMWATER IMPROVEMENTS: The proposed improvements are less than 5000 sf of impervious area on the site, and total cleared area(which is to be a combination of grass and pasture)is approximately 3/4 of an acre, thus minimum requirements 1-5 apply. Stormwater improvements include rooftop and driveway conveyance of stormwater to a dispersion trench to disperse runoff away from the septic drainfield, and to allow stormwater to flow though native vegetation. Runoff will flow over pasture and forest for approximately 300 feet prior to entering the existing wetland area. 150 E.Stretch Island Rd N.-Boles Residence Storm Drainage Analysis Page 2 of 14 III. UPSTREAM ANALYSIS: Due to on-site topography, minimal upstream runoff affects the area of improvements. Small areas of upstream and runoff from Stretch Island Road N may affect the site, but most of the runoff will discharge to the south or east, around the area of improvements. IV. DOWNSTREAM ANALYSIS: Runoff from the improved portions of the site will sheet flow to the east through forested land to the low area on site designated as a wetland. Runoff will then flow southwest for approximately 8001f through a gently sloped forestedibrushed swale. Runoff will then cross though a culvert under E Eckert Rd and discharges into the ditch system for E Eckert and E Stretch Island Rd S. Runoff from the ditch system crosses though a culvert under E Stretch Island Rd S After approximately 100 If, thence discharges to a brushed/forested gently sloped swale which discharges to a fresh-water pond, thence to Case Inlet, Puget Sound approximately 1000 if after crossing E Stretch Island Rd S. V. EROSION AND SEDIMENTATION CONSTRUCTION IMPACTS MITIGATION: The potential erosion and sedimentation impacts during the construction of this project include transporting and depositing sediments off the site. During the required earthwork a portion of the site will be disturbed. The vegetative cover will be removed and the soil exposed. Efforts to mitigate these potential impacts may include the construction of silt fences and a stabilized entrance to keep sediment off the adjacent properties and roadways. A. CONSTRUCTION SEQUENCE AND PROCEDURE The Contractor will be responsible for implementing the following erosion control and stormwater management control measures. The Contractor may designate these tasks to certain subcontractors as he sees fit, but the ultimate responsibility for implementing these controls and ensuring their proper functioning remains with the general contractor. The order of activities will be as follows (refer to Site Plan Sheet for details): l. Construct Temporary Construction Entrance. 2. Install perimeter silt fences in the locations shown on the T.E.S.C. plan. 3. Begin clearing and grubbing operations. 4. Commence site grading. 5. Provide temporary diversion for existing drainage if required 150 E.Stretch Island Rd N.-Boles Residence Storm Drainage Analysis Page 3 of 14 6. Disturbed areas of the site where construction activity has ceased for more than 2 days in the wet season and 7 days in the dry season shall be temporarily seeded and watered or covered with straw or plastic. 7. Install protective silt fences or sediment barriers at the ends of all exposed storm pipes. 8. Finalize subgrade preparation. 9. Install base material as required 10. Carry out final grading and seeding and planting 11. Remove temporary diversion during sediment pond permanent berm construction 12. Remove silt fencingonly after placement of all ravel i y p g s complete and exposed surfaces are stabilized. 13. Remove sediment from conveyance system as necessary, including conveyance ditches. B. SOIL STABALIZATION AND SEDIMENT TRAPPING Soil stabilization and sediment trapping procedures for this site include: 1. Silt fences shall be installed and maintained as per T.E.S.C. Notes and Details for Silt Fences on the plan sheet. 2. Permanent seeding and planting of all un-paved or landscaped areas using the hydromulching grass seeding technique. The paved access adjacent to the site entrance will be inspected daily and swept as necessary to remove any excess mud, dirt, or rock tracked from the site. The job site superintendent will be responsible for seeing that these procedures are followed. C. PERMANENT EROSION CONTROL AND SITE RESTORATION All ditches, swales, and exposed soils are to be covered with grass. The contractor shall ensure all grass has taken root and is healthy before project completion. The maximum slope allowed on the site at the completion of final grading is to be 2:1. 150 E.Stretch Island Rd N.-Boles Residence Storm Drainage Analysis Page 4 of 14 D. INSPECTION SEQUENCE OF TESC The following inspection and maintenance practices will be used to maintain erosion and sediment controls. 1. All control measures will be inspected at least every 7 days and within 24 hours after any storm event greater than 0.5 inches of rain per 24 hour period. 2. All measures will be maintained in good working order, if repairs are found to be necessary, they will be initiated within 24 hours of report. 3. Built up sediment will be removed from silt fence when it has reached one-third the height of the fence. 4. Silt fences will be inspected for output of sediment, tears, etc., to see if the fabric is securely attached to the fence posts, and to see that the fence posts are securely in the ground. 5. Temporary and permanent seeding will be inspected for bare spots, washouts, and healthy growth. 6. The job site superintendent will be responsible for selecting and training the individuals who will be responsible for these inspections. 7. Personnel selected for the inspection and maintenance responsibilities will receive training from the job site superintendent. They will be trained in all the inspection and maintenance practices necessary for keeping the erosion and sediment controls that are used onsite in good working order. E. CONTROL OF POLLUTANTS OTHER THAN SEDIMENTS 1. Waste Disposal All waste materials will be collected and stored in a securely lidded metal dumpster rented from a local waste management company which must be a solid waste management company licensed to do business in the State of Washington and Mason County. The dumpster will comply with all local and state solid waste management regulations. All trash and construction debris from the site will be deposited in the dumpster. The dumpster will be emptied a minimum of once per week or more often if necessary, and the trash will be hauled to a landfill approved by Washington State and Mason County. No construction waste materials will be buried on site. All personnel will be instructed regarding the correct procedures for waste disposal. Notices stating these practices will be posted in the job site construction office 150 E.Stretch Island Rd N.-Boles Residence Storm Drainage Analysis Page 5 of 14 trailer, and the job site superintendent will be responsible for seeing that these procedures are followed. 2. Sanitary Waste All sanitary waste will be collected from the portable units a minimum of once per week by a licensed portable facility provider in complete compliance with local and state regulations. 3. Hazardous Substances and Hazardous Waste a. All hazardous waste materials will be disposed in the manner specified by local, state, and/or federal regulations and by the manufacturer of such products. The job site superintendent, who will also be responsible for seeing that these practices are followed, will instruct site personnel in these practices. Material Safety Data Sheets (MSDS's) for each substance with hazardous properties that is used on the job site will be obtained and used for the proper management of potential wastes that may result from these products. An MSDS will be posted in the immediate area where such product is stored and/or used and another copy of each MSDS will be maintained at the job site construction trailer office. Each employee who must handle a substance with hazardous properties will be instructed on the use of MSDS sheets and the specific information in the applicable MSDS for the product he/she is using, particularly regarding spill control techniques. b. The contractor will train all personnel in the proper cleanup and handling of spilled materials. No spilled hazardous materials or hazardous wastes will be allowed to come in contact with stormwater discharges. If such contact occurs, the stormwater discharge will be contained on site until appropriate measures in compliance with state and federal regulations are taken to dispose of such contaminated stormwater. It shall be the responsibility of the job site superintendent to train all personnel in the proper cleanup and handling of spilled materials. C. Any spills of hazardous materials that are in quantities in excess of Reportable Quantities as defined by EPA regulations shall be immediately reported to the EPA National Response Center 1-800-424-8802. d. In order to minimize the potential for a spill of hazardous materials to come into contact with stormwater,the following steps will be implemented: 1) All materials with hazardous properties(such as pesticides, petroleum products, fertilizers, detergents, construction chemicals, acids, paints, paint solvents, cleaning solvents, additives for soil stabilization, concrete 150 E.Stretch Island Rd N.-Boles Residence Storm Drainage Analysis Page 6 of 14 curing compounds and additives,etc.) will be stored in a secure location, under cover, when not in use. 2) The minimum practical quantity of all such materials will be kept on the job site. 3) A spill control and containment kit(containing, for example, an absorbent such as kitty litter or sawdust, acid neutralizing power, brooms, dust pans, mops, rags, gloves, goggles, plastic and metal trash containers, etc.)will be provided at the storage site. 4) All of the product in a container will be used before the container is disposed of. All such containers will be triple-rinsed with water prior to disposal. The rinse water used in these containers will be disposed of in a manner in compliance with state and federal regulations and will not be allowed to mix with stormwater discharges. 5) All products will be stored in and used from the original container with the original product label. 6) All products will be used in strict compliance with instructions on the product label. 7) The disposal of excess or used products will be in strict compliance with instructions on the product label. 4. Contaminated Soils a. Any contaminated soils (resulting from spills of materials with hazardous properties)that may result from construction activities will be contained and cleaned up immediately in accordance with applicable state and federal regulations. b. The job site superintendent will be responsible for seeing that these procedures are followed. F. UTILITIES Underground Utilities are to be constructed using the following procedures: 1. The construction of underground utilities shall be limited, where feasible, to no more than 500 feet of open trench at any one time. 2. Where consistent with safety and space considerations, excavated material shall be placed on the uphill side of the trench. 150 E.Stretch Island Rd N.-Boles Residence Storm Drainage Analysis Page 7 of 14 3. Dewatering devices shall discharge to an appropriate sediment trap or pond, preceded by adequate energy dissipation,prior to runoff leaving the site. If a sediment trap is not used on the site, discharge shall be upstream of a properly installed silt fence. Storm Water Pollution Prevention Narrative Per 2005 Stormwater Manual for Western Washington Vol. 2 Section 3.3.1, the following Stormwater Pollution Prevention Plan narrative is provided below: Section 1: Elements 1-12 of the Construction Stormwater Pollution Prevention minimum requirements: Element 1. Preservation of Vegetation/Marking of Clearing Limits: The site, storm, and TESC plans of the civil plan set clearly delineates proposed clearing limits, and which areas are to be converted to lawn or pasture. Thinning operations only (no stump removal or grubbing) is to be allowed outside clearing limits. Element 2. Construction Access: Proposed access will have quarry spalls during construction to make a stabilized construction entrance. Element 3. Controlling Flow Rates: Area tributary to the site is minimal. Thus the proposed silt fence will also provide flow rate control. Element 4. Installing Sediment Controls: Sediment controls include the installation of silt fence located between disturbed areas and the edge of the disturbed area. Flow is to remain dispersed, and is not to be concentrated. Element 5. Stabilizing Soils: Instruction for grading and stabilization of soils is provided on sheets C3.0 and C3.1 of the civil plan set. Element 6. Protecting Slopes: Slopes are protected by limited disturbance. Covering of slopes will provide temporary erosion control, landscape and mulching will provide permanent erosion control. Element 7. Protecting Drain Inlets: No existing inlets are downstream of the site for at least 8001f. I �. 150 E.Stretch Islan d Rd N._Boles Residence Storm Drainage Analysis Page 8 of 14 Element 8. Stabilizing Channels and Outlets: No existing outlets or channels are on site. Rooftop downspout discharge is to be dispersed using splash blocks. Element 9. Controlling Pollutants: Instructions for control of pollutants are provided within the drainage report; see TESC section V.E. Element 10. Controlling De-Watering: Instructions for de-watering are provided within the drainage report; see TESC section V.F. Element 11. Maintaining Best Management Practices: All erosion control BMPs are to be maintained as necessary, and remain in place until the site is stabilized. Element 12. Management of the Project: Limitations and instructions are provided on sheets C3.0 and C3.1 of the civil plan set and within the erosion control section of the storm report. Sections 2 through 6. Project description, existing conditions, areas, and soil: See body of the storm report(pages 1-2). This section includes the project description, existing conditions of the upstream and downstream, critical areas and soil types and locations. Grading is expected to balance, at approximately 1,100 cy of cut, and 1,100 cy of fill. Any excess or borrow is to be from an approved site. Section 7. Potential erosion problem areas: Given the nature of the soil (less than 20% fines), erosion problems are expected to be minimal. There is no area of particular concern. However, it is important that the silt fence be in place prior to construction, and loose soils be covered during heavy rains. If construction is to take place during the rainy season, exposed or unstabilized slopes will have to be covered when not currently being graded. Section 8. Construction phasing: No phasing is proposed. Section 9. Construction schedule: Construction is expected to begin upon permit approval. If grading is delayed to the rainy season, the contractor must take extra precautions to prevent runoff from loose or unstabilized soil. Soils to be compacted must be protected from excessive moisture, and unstabilized slopes must be covered with plastic or jute matting, and unworked soils must not be left uncovered more than 2 days. Straw may be used for temporary covering of relatively flat (0%5% slopes) areas. The contractor is ultimately responsible for preventing silt-laden runoff from leaving the site and to 150 E.Stretch Island Rd N.-Boles Residence Storm Drainage Analysis Page 9 of 14 ensure water quality standards are met, and environmentally sensate areas (wetlands) are protected. Section 10. Financial/Ownership Responsibilities: Property owner will be Gerald and Wendy Boles. Bonds or covenants will be as required by Mason County. Section 11. Engineering Calculations: No engineering calculations are required, since only silt fence is used. VI. DESIGN CALCULATIONS: A. PARAMETERS: 1. Stormwater Runoff: In accordance with the 2005 Stormwater Management Manual for Western Washington by Washington State Department as Ecology is adopted by Mason County runoff for design shall be computed using a continuous flow model. 2. Water Ouality Miti!ation: In accordance with 2005 Stormwater Management Manual for Western Washington, water quality is not required since the impervious area is less than 5000 sf. A dispersion trench is proposed, with will allow runoff to filter though pasture and native woods. 3. Technical requirements: In accordance with the 2005 Stormwater Management Manual for Western Washington by Washington State Department of Ecology is adopted by Mason County. 4. Computer Software Used: Western Washington Hydrology Model, version 3 (WWHM3)by Clear Creek Solutions. 5. Rainfall Precipitation: Olympia rain gauge, precipitation factor of 1.111 6. Area delineation for Basins: Aex =Existing Area Adev=Developed Area B. STORMWATER EVALUATION: 1. Pre-developed Conditions The predeveloped area is the area of improvements that will be converted to rooftop, driveway, lawn/landscaping, or pasture. For the disturbed existing area, a value of 0.75 ac (AeX= 0.75 ac,) 150 E. Stretch Island Rd N.-Boles Residence Storm Drainage Analysis Page 10 of 14 is analyzed. Per Stormwater Manual requirements (and per existing conditions), forest is used as the existing conditions. The following conditions are assumed for the site basin: Pervious = 0.75 ac, Forest Steep Slope, Type C Soil 2. Developed Conditions The developed area(Adev= 0.75 ac,) is analyzed. The following conditions are assumed for the site basin: Impervious =2390 sf= 0.0549 ac Driveway Moderate Slope Impervious =2260 sf= 0.0519 ac Rooftop Flat Slope Pervious = 0.10 ac, Lawn/Landscaping Flat Slope, Type C Soil Pervious = 0.1722 ac, Lawn/Landscaping Steep Slope, Type C Soil Pervious = 0.371 ac, Pasture Steep Slope, Type C Soil See Appendix A for the Developed conditions site map. 3. Results: Predeveloped 100-yr flow= 0.16 cfs Developed 100-yr flow= 0.27 cfs Increase in 100 year flow due to development: 0.27—0.16 =0.11 cfs Increase in flow is less than 0.2 cfs, therefore downspout dispersion is the recommended. In this case, a dispersion trench is used to provide limited infiltration, and to disperse the water away from the septic drainfield area. 4. Design Data: W WHM3 DATA WWHM3 Screenshots have been cropped for display purposes only Contents: 4 Basin Data: a. Predeveloped Basin b. Developed Basin 4 Results a. Comparison of flows, Predeveloped/Developed Basin 100 yr 150 E.Stretch Island Rd N.-Boles Residence Storm Drainage Analysis Page 11 of 14 Western Washington Hydrology Model PROJECT REPORT Project Name: 9385 Boles Site Address: City Report Date 8/24/2016 Gage Olympia Data Start 1955/10/01 Data End 1999/09/30 Precip Scale: 1.11 WWHM3 Version: BASIN DATA PREDEVELOPED LAND USE Name Basin 1 Bypass: No GroundWater: No Pervious Land Use Acres C, Forest, Steep .75 Impervious Land Use Acres Element Flows To: Surface Interflow Groundwater Name Basin 1 Bypass: No Groundwater: No Pervious Land Use Acres C, Lawn, Flat .1 C, Lawn, Steep .1722 C, Pasture, Steep .371 Impervious Land Use Acres ROOF TOPS FLAT 0.0519 DRIVEWAYS MOD 0.0549 Element Flows To: Surface Interflow Groundwater 150 E.Stretch Island Rd N.- Boles Residence Storm Drainage Analysis Page 12 of 14 MITIGATED LAND USE RESULTS ANALYSIS RESULTS Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.057416 5 year 0.083601 10 year 0.101315 25 year 0.123966 50 year 0.14098 100 year 0.158089 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.108782 5 year 0.149857 10 year 0.177807 25 year 0.213958 50 year 0.241492 100 year 0.269545 Yearly Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1957 0.063 0.108 1958 0.130 0.229 1959 0.036 0.092 1960 0.051 0.115 1961 0.083 0.144 1962 0.052 0.074 1963 0.023 0.051 1964 0.112 0.235 1965 0.055 0.082 1966 0.064 0.132 1967 0.033 0.063 1968 0.067 0.109 1969 0.052 0.087 1970 0.028 0.067 1971 0.047 0.082 1972 0.067 0.116 1973 0.096 0.145 1974 0.056 0. 097 1975 0.046 0. 131 1976 0.037 0.098 1977 0.075 0.134 1978 0.029 0. 136 1979 0.055 0. 110 150 E.Stretch Island Rd N.-Boles Residence Storm Drainage Analysis Page 13 of 14 1980 0.056 0.094 1981 0.056 0.112 1982 0.080 0.171 1983 0. 053 0.150 1984 0. 104 0.176 1985 0.061 0.093 1986 0.026 0.067 1987 0.098 0.153 1988 0. 085 0.144 1989 0.042 0.066 1990 0.045 0.075 1991 0.108 0.209 1992 0.140 0.197 1993 0.043 0.100 1994 0.026 0.064 1995 0.027 0.064 1996 0.066 0.108 1997 0.098 0.133 1998 0.054 0.080 1999 0.073 0.163 2000 0.067 0.107 Ranked Yearly Peaks for Predeveloped and Mitigated. POC #1 Rank Predeveloped Mitigated 1 0.1403 0.2353 2 0.1296 0.2293 3 0.1117 0.2094 4 0.1083 0.1970 5 0.1038 0.1762 6 0.0984 0.1713 7 0.0978 0.1626 8 0.0959 0.1529 9 0.0848 0.1497 10 0.0835 0.1447 11 0.0795 0.1442 12 0.0748 0.1440 13 0.0729 0.1360 14 0.0675 0.1336 15 0.0669 0.1331 16 0.0666 0.1324 17 0.0656 0.1313 18 0.0637 0.1156 19 0.0627 0.1151 20 0.0609 0.1117 21 0.0561 0.1097 22 0.0558 0.1091 23 0.0558 0.1082 24 0.0552 0.1076 25 0.0546 0.1069 26 0.0537 0.0995 27 0.0531 0.0979 28 0.0523 0.0965 29 0.0523 0.0942 30 0.0513 0.0930 31 0.0474 0.0918 32 0.0456 0.0870 33 0.0455 0.0824 34 0.0432 0.0819 35 0.0421 0.0805 150 E.Stretch Island Rd N.-Boles Residence Storm Drainage Analysis Page 14 of 14 36 0.0374 0.0747 37 0.0363 0.0735 38 0.0325 0.0674 39 0.0292 0.0667 40 0.0280 0.0660 41 0.0270 0.0641 42 0.0262 0.0640 43 0.0262 0.0630 44 0.0230 0.0507 This program and accompanying documentation is provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by the user. Clear Creek Solutions and the Washington State Department of Ecology disclaims all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions and/or the Washington State Department of Ecology be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions or the Washington State Department of Ecology has been advised of the possibility of such damages. APPENDIX A-LIST OF FIGURES f SITE E GRAPEVIEW . LOOP f q._ N// " STRETCH ISLAND i r == CASE INLET VICINITY MAP SECT. 8 TwP ziAi R I W FIG . 1 \ \90014 I I I I I I I 2 31 1 I 4 1 I I I 1 12108-76 I 12108-76-90010 I 112108-75 I I 12108-75 1 I 1 \ -90013 N I -00033 I -00032 1 -00031 I -00030 -00043 I -00042 1 -00041 I -00040 12108-11-00010 \ I FOUND REBAR AND CAP FOUND IRON PIPE 0.2' N. I 1 I 1 0.1' E. OF PROPERTY LINE I AND 0.2' E. OF FOUND IRON PIPE \ CALCULATED POSITION HELD AS SE FOUND BENT IRON PIPE I POINT OF BEGINNING I S 8g•15'27' W FOUND IRON PIPE 0.2' E. 1 I CORNER LOT 4 0.3' E. OF CALCULATED -90011 _90014 \ I(LOT 8) E. ISLAND CREST RD. s 8T31.32• W 559.47'(D) OF CALCULATED POSITION _ POSITION SCALE' '-40• 1 -ram -,�- -, �� N 88'29'56' W 227.72'(C) 1 �;naSE;ti •y+.-`:` _ •:. ;a.- - -J• - N 89*46*09' W 227.70'(D) ho ^r 'hey '�o `40 `16 'Lk ryry 82 N ya I' \ 8 ti6 0 30' 6' HOG WIRE FENCE, ON OR WITHIN 0.2' 12108-12-00170 I '16 OF PROPERTY LINE 0 0 I o ° �• I In co8 I N � O N v) 12108-7 -00080 9 0 p ti o vi. w I no N� 5 0 nn OI W 12108-75-00050 BOf O p O ^ry _!2 GOV'T LOT 8 z I da o z I e0 _ In FLAGGING BY OTHERS 12108-12-00180 j �y yo yp ga hti ab a6 as a1 ao h� he ha by hp ti0 N� rya y1 1 ,8 EDGE OF WETLAND, a n N N a m: I N 88'53'06'E E N 87'09'11' E 787.70'(D) � WOOD STAKE % FOUND BENT IRON PIPE (TYPICAL)) 0.4' N. OF CALCULATED � I HELD FOUND IRON PIPE POSITION W I I AS SW CORNER LOT 8 u I 7 I I I 12108-75-00070 LEGEND 30' 30' O FOUND 5/8'REBAR AND CAP LS 28237 I I I GOV'T LOT 9 O FOUND 3/4'IRON PIPE AND CAP 'LOVrrf 0 FOUND 3/4'IRON PIPE, NO CAP DESCRIPTION NOTES Qp TRANSFORMER ALL THAT PORTION OF THE GOVERNMENT LOT 9, SECTION B,TOWNSHIP 21 1. HORIZONTAL DATUM: WASHINGTON STATE COORDINATE SYSTEM NAD ©POWER VAULT NORTH, RANGE 1 WEST, W.M. IN MASON COUNTY, WASHINGTON. PARTICULARLY 83/2011, NORTH ZONE PER GPS TES TO WSRN. o TELEPHONE RISER DESCRIBED AS FOLLOWS: a 2. VERTICAL DATUM: NAVD88 PER TIES TO WSRN. CABLE TELEVISION RISER BEGINNING AT THE MEANDER CORNER BETWEEN SECTION 5 AND 8 ON THE WEST a SIGN SIDE OF STRETCH ISLAND, WHICH IS A 3/4' IRON PIPE; THENCE NORTH 3. REFERENCE SURVEY RECORD IN VOLUME 1, PAGE 115. RECORDS OF 89*58*39' EAST ALONG THE SECTION LINE BETWEEN SAID SECTIONS 5 AND 8, A MASON COUNTY, WASHINGTON. • BOLLARD DISTANCE OF 558.63 FEET, MORE OR LESS, TO THE NORTHWEST CORNER OF nn SOIL TEST BORING, AS NUMBERED GOVERNMENT LOT 9; THENCE SOUTH 00'15'07' WEST ALONG THE WEST LINE OF 4. REFERENCE SPECIAL WARRANTY DEED RECORDED UNDER AUDITOR'S FILE 64 SAID GOVERNMENT LOT 9, A DISTANCE OF 399.36 FEET TO THE POINT NUMBER 2025292, RECORDS OF MASON COUNTY, WASHINGTON. WOOD STAKE SET BY CLIENT BEGINNING OF THE TRACT OF LAND HEREBY DESCRIBED; CONTINUING THENCE SOUTH 00'15'07'WEST ALONG THE SAID WEST LINE OF GOVERNMENT LOT 9, A 5. THIS SURVEY WAS PERFORMED WITHOUT THE BENEFIT OF A TITLE REPORT ASPHALT DISTANCE OF 285.55 FEET; THENCE NORTH 87-09.11' EAST 787.70 FEET; AND DOES NOT SHOW (IF ANY) EASEMENTS OF RECORD.- -*;-:: GRAVEL THENCE NORTH 00'15'07' EAST PARALLEL TO THE WEST LINE OF GOVERNMENT 6. PARCEL LINES AND ROAD RIGHT OF WAY WIDTHS SHOWN HEREON ARE LOT 9, A DISTANCE OF 271.50 FEET TO THE SOUTH LINE OF A TRACT OF LAND -'—'�--•--•- FENCE RETAINED BY WALTER 0. ECKERT AND AUGUSTA ECKERT IN DEED DATED APRIL BASED ON MASON COUNTY ASSESSOR'S DIGITAL MAPPING AND MAY BE 30, 1951, RECORDED IN VOLUME 138 OF DEEDS, PAGES 419 AND 420; SUBJECT TO REVISION. (C) CALCULATED THENCE SOUTH 89'46'09'WEST 227.70 FEET ALONG THE SOUTH LINE OF SAID (D) PER DEED, SEE NOTE 4 ECKERT TRACT; THENCE SOUTH 87'31'32' WEST 559.47 FEET, MORE OR LESS, TO THE POINT OF BEGINNING; EXCEPT THEREFROM STRETCH ISLAND COUNTY ROAD. (ALSO KNOWN AS TRACT 8 OF SURVEY RECORDED OCTOBER 23, 1974 IN 40 0 40 80 VOLUME 1 OF SURVEYS, PAGE 115. UNDER AUDITOR'S FILE NUMBER 204274). Scale in Feet REVISIONS BY DATE TOPOGRAPHIC SURVEY FOR: SCALE 1"=4& NO. DATE �_ BY DESCRIPTION DESIGNED ��N.L.Olson&Associates,Inc. 150 E Stretch Island e: Gerald and Wendy Boles DATE May 4,2016 � DRAWN DGP 5116 DRAWING NUMBER Engineering,Planing and Surveying �p P.O.Box 224 CHECKED JCD 5116 a Portion of Goverment Lot 9 in the Northeast Quarter of APPROVED (360)8-P.O.0 637.P)eO h-t "^• �.�' Section 8, Township 21 North,Range 1 West,W.M. Grapeview,WA 98546 16-9385 2453 BetW Aveme,P.O.Be¢637,PaR Orthvd,WA 9H366 ACCEPTED III MaSOII�,'Olmt}7,WashmgtOD SHEET 1 OF 1 1 \ I I I I \90014 I 1 I I I I I 11 \\ \\ I 2 I 3 1 I I 4 I I naT1:u I I I I 1 12108-76 \\ g I 12108-76-90010 I 112108-751 I 12108-75 I I N.AV.D.86 I -00033 I -00032 I -00031 1 -110030 -00043 I -00042 I -00041 ' -00040 12108-11-00010 c -90013 No -FOUND REBAR AtJ0.CAP FOUND IRON PIPE 0.2' N. 1 \ 0.1' E. OF PROPERTY-6INE I AND 0.2' E. OF I I f HELD FOUND SE ON PIPE FOUND BENT IRON PIPE \ CALCULATED POSITION FOUND IRON PIPE 0.2' E. CORNER LOT 4 ' POINT OF BEGINNING S 89'15'27" W 0.3' E. OF CALCULATED 1 \ '�' LOT 6 _F CALCULATED POSITION -90011 -90012 ; _ I( ) E• ISLAND CR-f RD__ _ I S BT31'S2• W 55947*(D) POSITION �...—.-- ,T L..- L e N 88'29'56" W 227.72'(C 1 E - a �` t— i J. ■N 89'4 W 227.70'D I,' X.-�1 '"`t n°' !�rO bti Job !� 5'' gti «P e� .rO.' .^' .4 -7 41 7 h�' ;° tiQ �� ./ ..ti" •• ryry Scale in Feet 868 I T , T?LAPjTiNG GRASS �' / APPROX LOCATION OF PROPOSED WELL.` :.16 •4 i •�=NATWE VEGETA11 TO/ RMAIN E . H(N TREE TN)NG ONLY IN THIS AGtEA. NO i STUMPS'TO/BE/REMOYED. / / / - �' 25A / i / n aiT`siN :''. i :.. - _ 1 1 1 - 170 v ..2 OB 2 00 _ .f. SET1g4CK t i 1 i •go , II I' (ice: •_•••••••, /� / / /'/ / / 121015/ __:-j `e s0 30 LF I o; S"s• : ROPOSECuy�SAWCU . >p •t 3/ • / / %- 1/SiO','FL ,n • `••CONCRETE PA#WRE PLANTING" ,- �, RK5ry: '• •1DRNEWAY .•' / , / !/ ��OPROXIMATE WETLAND BOUNDARY 0 5 = 3 ' o //•: • i / /'/ / / '�' (NOT DELINEATED IN THE FIELD) maw � y�• ���,: ,, / �i.'/ / PER WETLAND REPORT DATED APRIL, ■o O 13 �• 'w-• •'«,r.•I�': + / / / �i / / 2016 BY THE WETLAND CORPS zo GOV'T LOT 8 Z 2i .• ;� , . , izz 0e • • f � �Nr:�rf: e` •'•y��r•.a*•tk / / is G I f r�/'/..• - BRkAIC LINE• •e V+ �. �6 In 1 i.._ 12108-12-00180 1 �"' m �' �h ha ,hti ° >� „b a° >xti ao �,h�h•• '��' ti� .ry rye ;1^'' / .•'1. •�g !v ■ ■: /■ ■. r ■��,� ■.`� �.� 1, 88-53'O6' E / N 8709'11" E 787.70'(D) EDGE OF WETLAND, FOUND BENT IRON PIPE Of 0.4 I... FLAGGING BY THE ' N. OF CALCULATED 1 ( / WETLAND CORPS. POSITION (1) 1 '29r HELD FOUND IRON PIPE �,, ;" L1.1 1 I AS SW CORNER LOT 8 A _60 to, 7s !CL P I i atal S f� Gl �K1 I 1 7 1 30' 30' I 72108-75-00070 IGOV'T LOT 9 I 1 1 I I I E. ECKERT RD. I I NOTE THE APPROXIMATE LOCATION OF EXISTING UNDERGROUND UTILITIES ARE SHOWN ON THE PLANS.IT IS THE CONTRACTOR'S RESPONSIBILITY TO DETERMINE THE LOCATION OF EXISTING UTILITIES PRIOR TO COMMENCING WORK. THE CONTRACTOR SHALL BE RESPONSIBLE FOR DAMAGES THAT MIGHT BE OCCASIONED BY THE CONTRACTOR'S FAILURE TO LOCATE.PRESERVE AND PROTECT UNDERGROUND UDURES. CALL 48 HOURS BEFORE YOU DIG 811 >�EEo Fi &' REVISIONS BY DATE FOR: SCALE: 1-40' NO. DATE BY DESCRPn N DESIGNED RPJ 09/16 A SITE PLAN Gerald&Wendy Boles ��N.L.Olson&Associates,Inc. DATE: AIL 26,2D DRAWN ABA 01116 Engineering,Planning and Surveying '9, ,�,79 4 150 E STRETCH ISLAND RD.N. P.O.BOX 224 � J7g�`�6 DRAWING NUMBER CHECKED NLOD 03116 ) lysrONALe�G GRAPEVIEW,WA 98546 GRAPBVIEW,WA 98546 16-9385 APPROVED (360)995-2350 or(360 876-2294 345313ahe1 A�•rnua,P.O.Box 637,Port O,chad WA 98366 All that Portion of the Government Lot 9 of BUTCH.BOLESQa GMAII,.COM ACCEPTED Section 8,Township 21 North,Range 1 West,W.M.in Mason County,Washington SHEET Ca.o 1 \ \90014 I I I I I I I 1 \ I 2 1 31 I I 4 I I 1 12108-76 \\ $ I 12108-76-90010 1 112108-75 I I 12108-75 I I N.AV.D.88 1 -00033 I -00032 I -00031 I -00030 -00043 I -00042 I -00041 I -00040 12108-11-00010 1 \ -90013 0 FOUND REBAR AND.CAP FOUND IRON PIPE 0.2' N. 0.1' E. OF PROPERT4-UNE I AND 0.2' E. OF I I I FOUND IRON PIPE CALCULATED POSITION HELD AS SE FOUND BENT IRON PIPE \ POINT OF BEGINNING S 89'15'27" W FOUND IRON PIPE 0.2' E. I I CORNER LOT 4 0.3• E. OF CALCULATED -90011 1 90012 '' 1 OF CALCULATED POSITION POSITION \ I(LAT B) E ISLAND CREST RD S 8T31 32 1W 559 4T(D) - . 77 - 1777 _ N 88'29'56" W 227.72'(C .' , N 89'46'09" W 227.70'(D) a0 o ao Ro 1 r r.■� ■'■ �■ i m■ tf��"m :'■:ter ra ■ ■ ■y ! . !•. �■ ■ ■ ■■�■ � ■ � ■ ■ 0° n� !�� � 66 ,6� sti J�",h� .�",y'' yti !33 e� s`O .'.^• .4 ;7 ti� h° '7ry ;�' ti� 'y� ,7." hry Scale in Feet 82 �- '.. APPROX LOCATION i ! ' T TP=2 �..g /! /• / OF PROPOSEDtlWELL.._if��,\ '',•' ' ..6 -•IA I -NATIVE VEGETATIOJ�11 TO/ N 30' REMAIN. TREE THINN)NG NOTES: 0` ONLY IN THIS RE NO , rS• / 1�........ i MPS'TO,BE 0YED. 1. TESC MEASURES AND BMPS SHOWN ON THESE PLANS ASSUME `Y I �•' '-•SB LF FILTER.FABRIC / / /� �• -6 Hite;4,1RE F'f..N^E• GRADING TO OCCUR DURING DRY CONSTRUCTION SEASON. IF `, - SEE :j ' , / ' / - ,..�^ Of' ^•IT"t r GRADING AND CONSTRUCTION IS TO OCCUR BETWEEN THE i 6 - � ) ( ' ' / / `' ` rl t PERIOD OF OCTOBER 1ST THROUGH APRIL 30TH, ADDITIONAL t2 1 08-1 2-001 70 �Y i 1 DETAIL SHEET C2.1) / / / i+ PR;)PEF,TY _JNE TESC MEASURES WILL BE REQUIRED TO COMPLY WITH MASON I I C •/ '/.'yap • r' �-3' '/ // /' /'� COUNTY AND WASHINGTON DEPARTMENT OF ECOLOGY +TP-5 C4 STANDARDS FOR WATER QUALITY � LIAA AT ALL TIMES WHILE THIS r ' , / SITE IS UNDER CONSTRUCTION, THE CONTRACTOR IS n vi �� ' � ' ITS //, / / / ? / RESPONSIBLE TO ENSURE WATER QUALITY STANDARDS ARE 1 Irk / }l // O / `z MET. IF REFER TO THE STORMWATER POLLUTION PREVENTION CJ o _ /�/��/� PLAN (SWPPP NARRATIVE) PREPARED FOR THIS PROJECT AS H# y % / ,' / i / / 12108-7 / WELL AS ALL NOTES REGARDING WATER QUALITY IN THE CIVIL I y' /, /' '/ / / PLAN SET. p� ' i ''� / / / qy� u7 2. THE LOCATION OF UNDERGROUND UTILITIES ARE NOT SHOWN I �a L00OR ARE SHOWN IN APPROXIMATE LOCATIONS ONLY BASED �- / ��` 5 30 LF o' :'� .� -'' / / / /' / / APPROXIMATE WETLAND BOUNDARY UPON T1E'S TO SURFACE STRUCTURES. BEFORE ANY SAWCUT /' -�?/ �� / /' / ,'' / (NOT DELINEATED IN THE FIELD) *,°�'w CONSTRUCTION ACTIVITIES OCCUR IT WILL BE NECESSARY TO ,' 1 2 1 08-75-00050 CONTACT THE LOCAL LOCATE SERVICE FOR UTILITY LOCATIONS. �E-•� ' '� ' �' / PER WETLAND REPORT DATED APRIL, ■ I f ', •d` �� '�%�' / / i�- 2016 BY THE WETLAND CORPS o 0 O 1 g1 lF' , _^ 3. EROSION MEASURES CONTROL MEASURES ARE NOT LIMITED TO GDV'T LOT 8 Z ! BB, e1 ���� _ —85 LF 1 / // j. /' o THE ITEMS SHOWN ON THESE PLANS. THE CONTRACTOR ISJ�/.•' */'3r / / i RESPONSIBLE FOR THE INSTALLATION AND MAINTENANCE OF 1 i J -,Z ,•''� ! / i, I Z EROSION CONTROL MEASURES. NO SILTATION OF EXISTING OR PROPOSED DRAINAGE FACILITIES SHALL BE ALLOWED, CARE i ,'CONSTRUCTION � , ' � /' ' '// / / - ■ SHALL BE TAKEN TO PREVENT MIGRATION OF SILTS TO O I ' ,`; ;• / , / OFF-SITE PROPERTIES. Z -i' / /9:� ENTRANCE (SEE.' DETN SHEMI: 4. ALL KNOWN FUEL STORAGE TANKS WITHIN 100' OF PROJECT Ln BOUNDARIES ARE SHOWN (NONE KNOWN). 12108-12-00180 ' j ro a oa �j cj .f y`I• ° s�'ar� as/a`I',P7a /}`I• •y° ry� ,°y° rya ry`t• / �8' �' 5. APPROXIMATE LOCATIONS OF EXISTING WELLS, SANITARY SEWER / /! ■ ■ ��'■ �' �'� ■ ■ ■ ■ ■ ■ • ■ ' SYSTEMS, SEPTIC TANKS AND/OR DRAINFIELDS SHOWN. tJ ` ■ �,t �y N 88'S3'06" E W , , N BT°9'11" E 787.70'(D) I = �L T.I,E / FOUND BENT IRON PIPE t_'...Y rr.,•a �, EDGE OF WETLAND, t. 6.AL)? 0.4' N. OF CALCULATED 6. CONTRACTOR TO COORDINATE WITH APPROPRIATE UTILITY 1 / ` FLAGGING BY THE POSITION PURVEYOR PRIOR TO REMOVAL OR ABANDONMENT OF EXISTING � 1 -29% HELD FOUND IRON PIPE ' �,' / WETLAND CORPS. UTILITIES ON SITE. 1 i W AS SW CORNER LOT 8 , 7. REMOVAL OF SURFACE STRUCTURES TO BE COORDINATED WITH T.60 I OWNER. Y. t 8 REMOVAL OF TREES TO BE COORDINATED AND APPROVED BY I 1 7 9. SEE SHEET C2.1 FOR T.E.S.C. NOTES AND DETAILS. ( 1 12108-75-00070 30 30' I GOV'T LOT 9 10.INLET CONTROL TO BE PROVIDED TO CATCH BASINS EXPOSED I TO SEDIMENT. I I I I E. ECKERT RD. I NOTE THE APPROXIMATE LOCATION OF EXWNG UNDERGROUND UTILITIES ARE SHOWN ON THE PLANS.IT IS THE CONTRACTOR'S RESPONSIBILITY TO DETERMINE THE LOCATION OF EXISTING UTILITIES PRIOR TO COMMENCING WORK. THE CONTRACTOR SHALL BE RESPONSIBLE FOR DAMAGES THAT MIGHT BE OCCASIONED BY THE CONTRACTOR'S FAILURE TO LOCATE,PRESERVE AND PROTECT UNDERGROUND UTITIES. CALL 48 HOURS BEFORE YOU DIG811 or us 1 LEE o F1 eye• Q•a` `V+c s EXISTING COMMONS &TESC PLAN REVISIONS By DATE FOR: srwLl=: L-w' NO. DATE BY DESCRIPTION DESIGNED RPJ OS/16 ' Gerald& Wendy Boles �_�N.L.Olson&Associates,Inc. DATE: AUP A 26,20 DRAWN ABA 08/16 Engineering,Planning and Surveying 90 ,?h919 p .� 150 E STRETCH ISLAND RD.N. P.O.BOX 224 DRAWING NUMBER CHECKED NLOU 03/16 ` � GRAPEVIEW,WA 98546 GRAPEVEEW,WA 98546 - (360)995-2350 or(360)976-2294 SfONAL P' (360)551-1051 16-9385 --- APPROVED 2453 BeNeI A—m P.O.Box 637,Port O.d. WA 99366 All that Portion of the Government Lot 9 of BUTCIJ.BOLESIa3GMAIL.COM ACCEPTED Section 8,Township 21 North,Range I West,W.M.in Mason County,Washington SHEET ©.o A N.A.V.DL U u N —90013 o FOUND REBAR-AND_ CAP I 30 0 30 6iiiiiiiiiiiiiiiiiiiiiiij0 0.1' E. OF PROPERTY-LLNESim . FOUND IRON PIPE 0.2' N. I I 1 AND 0.2' E. OF I I I ' CALCULATED POSITION FOUND IRON PIPE 0.2 E. Scale in Feet IPOINT OF BEGINNING 1 S 89"15'27" W STORM DRAINAGE I(LOT 8) E. ISLAND CREST RD. �S 87'31'32" W 559.47'(D) CU T D POSITION - - E-- —— — is — OF SOx3 DISPERSION TRENCH O TOOP ELEVELEV 59 TTOM 04 O To D �� O Qi ,.'e .R" A o� 2 i /O C TYPE 1 6• O <o B E.�. `L� O" 0 O� 4i �L Ri tw ti ,b 6 .h "5 5 ,5 5 ;o� a a �• a ;'-� ^� "3 'S ^3 �L APPROX LOCATION i' e, // i / ! // RIM SOLID LOCKING LID OF PROPOSED WELL " .f r ■ r // ' / '' / / O3 191 LF 8" CPEP, S=6.8% TOR LEA OUT STORM C N '� I .,•-., Bo., RIM=63.0t IE=61.56 0. 30' 1 ...■ r /' )g" 40t LF 8" CPEP, S=6.8R CB TYPE 1 SPILL CONTROL W/ TURN DOWN ELBOW RIM=67.0 IE=64.3 STORM CLEANOUT FOR I - ROOF DRAINS 8 �" j RIM=67.03 N N 7 3 / / IE=63.5t - u7 ...r .,FFE=67.5i•" �j / / /�• i f / / ' / OB 20t LF 8" CPEP, S=9.7% CN try 1 / / / /" / / I I � to'� `■ - / / i l �,y----.�-� ■. 3 12108- OOQ$0� / SANTfARYSEWER I - 5 O -`-d-.- 5. - / / /'/j• ' ,/ ' / �� a 4" PVC SANITARY SEWER CONNECTION I 'o - .�` O S5 `� / i / �/ / / / 2❑ 4•' CLEAN OUT RIM=67.0t 8/' IE=64.0t 17t LF 4" PVC. S=0.5% MIN. cp �:r/r :r' r it '/ // ', 4❑ MAINTAIN A MIN CLEARANCE OF 6" BETWEEN SEWER AND STORM PIPE. STORM IE=63.4t 3,.! 1 •■ :i"^yrr r' rf 'rrr• rrr �> ' / / '� 5❑ 1200 GALLON SEPTIC TANK PER i + {J i i r i •`;L'�- +% %, ARROW SEPTIC DESIGNS --- Ie�,`' SPECIFICATIONS DATED 3/17/16 !V Sf L C, 5=0.5R MIN }� / /- 6❑ 36t F 4" PV I —.. ■:" Dr,'V e_ AY t, s. rk ' / / BOX PER GYM. / /" / /' _/ 7❑ VALVE CONTROL • / ."•-�/ i / �/ I ARROW SEPTIC DESIGNS SPECIFICATIONS DATED 3/17/16 O' lb, 8� DRAINFlELD PER ARROW SEPTIC co Fo" ro h h h h x a 1k x a ■ ■ �.■ ■,— ' ■. �/■ ■— ■ �,■ ■ —;■ ■ �/■ �� ■ ■ � ■;■ ■ ■ ■ ■ ■ ■ ■ ■ DESIGNS SPECIFICATIONS DATED N 88'53'06" E T 3/17/16 N 8T09'1 1" E 787.70'(D) - EDGE OF WETLAND, I FLAGGING BY THE WETLAND CORPS. NOTE THE APPROXIMATE LOCATION OF EXISTING UNDERGROUND UnUTIES _ ARE SHOWN ON THE PLANS. IT IS THE CONTRACTOR'S RESPONSIBIUTY TO DETERMINE THE LOCATION OF EXISTING UTILITIES PRIOR TO COMMENCING WORK. THE CONTRACTOR SHALL BE RESPONSIBLE FOR DAMAGES THAT MIGHT BE OCCASIONED BY THE CONTRACTOR'S FAILURE TO LOCATE,PRESERVE AND PROTECT UNDERGROUND UTIUTIES. CALL 48 HOURS e �' BEFORE YOU DIG 811 tpA� LEE o o °o$ REVISIONS By DATE Z'~ UTHIYFY&GRADING PLAN FOR: Gerald &Wend BrUIeS SCALE: 1"=30' DRAWN ABA 09/16 NO. DATE BY DESCRIPTION DESIGNED /16 L�j 7 N,L,Olson&Associates,Inc. DATE: Augua26,20 m79SL P.O.BOX 224 Engineering,Planning and Surveying A9c Re 150 E STRETCH ISLAND RD.N. DRAWING NUMBER o o �6 CHECKED NLOD 03116 (360)895-2350-(360)876-2294 e9s/ONAL�O, GRAPEVIEW,WA98546 GRAPEVIEW,WA 98546 APPROVED 2453 Be h.]Aye" P.O.9-637.Part ORhad WA 99366 All that Portion of the Government Lot 9 of (360)551-1051 1&9385 ACCEPTED Section 8,Township 21 North,Range 1 West,W.M.in Mason County,Washington BUTCH.BOLES@GMAIL.COM SHEET cs 0 Soil Map—Mason County,Washington a A a a, a 512950 512990 513030 513070 513110 513150 513190 513230 513270 513310 513350 47°19'47"N 47°19147'N 0 0 a In f � _ � R i N G m a N ,i 0 ,p o 't' o (n j G _ � o rf: v 47°19'38"N 47°19'38"N 512950 512990 513030 513070 513110 513150 513190 513230 513270 513310 513350 3 3 Map Scale:1:1,980 if printed on A landscape(11"x 8.5")sheet. MetfrS v N 0 25 50 100 150 A ` 0 50 100 200 300 Map projection:Web Mercator Caner ow dinates:WGS84 Edge tics:UTM Zone 1ON WGS84 USDA Natural Resources Web Soil Survey 8/25/2016 Conservation Service National Cooperative Soil Survey Page 1 of 3 I - 3"' , E VINEYARD CREST.RD uj N .. HIMON ab(1NVlSi H3t321iS 3 ' - i NYI SOS Qa QSI H3?11S 9 W � ` `�•,� �-.� 'mil FI G. 7