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HomeMy WebLinkAboutSEP2005-00082 - SEP Determinations ON.STgTF MASON COUNTY o p� A C O DEPARTMENT OF COMMUNITY DEVELOPMENT S v = Planning Division y� N Y �? P O Box 279,Shelton,WA 98584 0 o~ (360)427-9670 1864 MITIGATED DETERMINATION OF NONSIGNIFICANCE (WAC 197-11-350) SEP2005-00082 Description of Proposal: 7900. CUBIC YARDS GRADED Proponent: KURT OLSON Site Address(If Assigned): Directions to Site: BELFAIR TO LOG YARD RD TO SR3 Parcel Number: 123217500060 Legal Description: TR 6 OF LLS 02-0002 Lead Agency: Mason County The Lead Agency for this proposal has determined that it does not have a probable significant adverser 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. MITIGATED MEASURES ARE ATTACHED. Please contact Charles Mead McCoy III at ext. 294 with any questions. This DNS is issued under 197-11-340(2), the Lead Agency will not act on this proposal for 14 days from the date below. Comments must be submitted to Charles Mead McCoy III, C/O Mason County DCD, Planning Division, PO Box 279, Shelton WA 98584 by 7/12/2005. ofted Local Govemment Official Date C c ) S fe-e 1e rNN s R T' 8 1 \14 b lZ. MITIGATED DETERMINATION OF NONSIGNIFICANCE (WAC 197-11-350) SEP2005-00082 CONDITIONS OF THIS DETERMINATION 1) A Stormwater Site Plan (SSP)will be created and implemented prior to development, clearing, grading, or construction of any portion of the proposed segregation. X 2) Residential developers and individuals shall be required to control erosion during construction. Removal of vegetation should be minimized and any areas disturbed should be restored to prevent erosion and other environmental impacts.X 3) Water quality is not to be degraded to the detriment of the aquatic environment as a result of this project. X MASON CO. ENVIROMENTAL CHECKLIST KURT'S PRECAST SITE DEVELOPMENT A. BACKGROUND 1. Name of proposed project, if applicable: Kurt's Precast Site Development + .. 2. Name of applicant: Kenneth Kurt Olson 3. Address and phone number of applicant and contact person: PO Box 99, Belfair, 98528 360-275-1996 4. Date checklist prepared: 6-17-05 5. Agency requesting checklist: Mason County DCD 6. Proposed timing or schedule (including phasing, if applicable): Start July 1, 2005 7. Do you have any plans for future expansion, or further activity related to or connected with this proposal: If yes, explain. The current proposal is for development of a portion of the site as depicted and described in this proposal. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. The Overton's recently platted this property. There may be some environmental documentation on file for the procedure. 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. None 11. Give a brief, complete description of your 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 include additional specific information on project description.) The proposed development consists of clearing and grading, construction of a gravel ingress and egress road, a piped storm drainage system, a storm water infiltration system, industrial fabrication and lay down area for concrete precast products, and a new potable water well. At this stage of development of the 4.99 acre site development will include 0.7 acres of gravel road, 0.38 acres of gravel covered, product staging and storage area, and 0.27 acres of product development area (this area includes a 10' wide by 120' long concrete fabrication pad). The remainder of the site will be graded and hydroseeded to await future development. Water supply will be by potable water well on site that has yet to be drilled. Additional permits will be applied for when development proposals are developed for the remainder of the site. The site, grading and temporary erosion and sedimentation control drawings are included with this submittal. 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 area, provide the range or 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. The project is located north of Belfair Washington, Section 20, Township 23, Range 1 W in Mason County off Log Yard Road NE. A topography and Vicinity map are included with the submittals. B. ENVIRONMENTAL ELEMENTS: 1. EARTH: a. General description of the site (circle one): 4.99 acres of flat, rolling, hilly, steep slopes, mountainous, other A topography and Vicinity map are included with the submittals. The average grade of the existing site is approximately 4%. b. What is the steepest slope on the site (approximate percent slope)? 5% 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 note any prime farmland. The existing soils are Alderwood Gravelly Sandy Loam per the Mason County SCS Soils Survey. There is approximately 3 feet of weathered sands and gravels over hard pan. There is no standing water on the site. The site has been cleared but before the land was cleared the ground cover was small second growth trees and brush. The soils were classified as Type C 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. The cut and fill quantities will be 7,200 CY. The site will be balance graded. There will be no import or export of soils from the site. However, approximately 1624 CY of gravel and crushed rock will be imported for the gravel roadway. 305 CY of gravel will be imported for the precast concrete product storage and lay down area, 220 CY of gravel will be imported for the precast products fabrication area. f. Could erosion occur as a result of clearing, construction, or use: If so, generally describe. No —the site if relatively flat. g. About what percent of the site will be covered with impervious surfaces after project constructions (for example, asphalt or buildings)? Only 1,200 sq. ft of the site will be impervious if the gravel lay down areas and fabrication areas are excluded. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: An erosion control and drainage plan has been prepared and included with this SEPA Checklist for review. 2. AIR: a. What types of emissions to the air would result from the proposal (i.e. dust, automobile, odors, industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities, if known. There will be some dust from the gravel road — it will controlled by watering down the road during the summer use. The only other emissions from the site will be those related to auto and truck traffic. The only traffic to access the site will be the 5 person crew and approximately 10 concrete trucks a day. b. Are there any off-site sources of emissions or odor that may affect your proposal? If so, generally describe. No C. Proposed measures to reduce or control emissions or other impacts to air, if any: Use a water truck to reduce any dust from the gravel road if dust becomes a problem. 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, wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. No 2) Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans. No 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. None 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 location 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. We are proposing a 5000 gallon per day well to provide potable water to the site. Very little water will be used for the precasting operation. Concrete is trucked in. Water is used on site to clean tools and for drinking. 2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example; domestic sewage, industrial, containing the following chemicals..., agricultural, etc.). Describe 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. None. Sanicans will be used for crew toilets. C. Water runoff(including storm water): 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 flow into other waters? If so, describe. See the drainage report included with this ECL. 2) Could waste materials enter ground or surface waters: If so, generally describe. No d. Proposed measures to reduce or control surface, ground, and runoff water impacts, if any: See the drainage report. Water will be drained to an on site infiltration pond. The existing 12" organic layer of top soil will be left intact to treat storm water before it infiltrates into the ground. At this stage of development all the runoff from a 100 year storm event is retained on site and soaked into the ground 4. PLANTS: The site has been cleared and will be partially replanted with grasses. a. Check or circle types of vegetation found on the site: deciduous tree: alder, maple, aspen, other _x evergreen tree: fir, cedar, pine, other shrubs grass pasture crop or grain wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other water plants: water lily, eelgrass, milfoil, other other types of vegetation b. What kind and amount of vegetation will be removed or altered? The site has been cleared; no timber was present or harvested. C. List threatened or endangered species known to be on or near the site. None d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: We will Hydroseed. 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, heron, eagle, songbirds, other Mammals: deer, bear, elk, beaver, other Fish: bass, salmon, trout, herring, shellfish, other b. List any threatened or endangered species known to be on or near the site. None. The site was logged and cleared 10 years previous. The vegetation was small trees and shrubs. C. Is the site part of a migration route? If so, explain. No d. Proposed measures to preserve or enhance wildlife, if any: None 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. No permanent buildings are planned at this time. There will be work trailer. Power will be required to run tools and provide lighting and heat for the on site work trailer. b. Would your project affect the potential use of solar energy 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: None 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. No. 1) Describe special emergency services that might be required. None, unless there was an industrial accident on site. 2) Proposed measures to reduce or control environmental health hazards, if any: None b. Noise. 1) What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? There is very little noise associated with the precasting operation. Concrete trucks and concrete vibrators are the most common. 2) What types and 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 hour's noise would come from the site. Working hours are normally from 7AM to 6 PM. The area is industrial and the site is surrounded by industrial uses. There are no residences nearby. 3) Proposed measures to reduce or control noise impacts, if any: None. 8. LAND AND SHORELINE USE: a. What is the current use of the site and adjacent properties? Industrial Use. b. Has the site been used for agriculture? If so, describe. No. C. Describe any structures on the site. None d. Will any structures be demolished? If so, what? NA e. What is the current zoning classification of the site? Industrial f. What is the current comprehensive plan designation of the site? Industrial g. If applicable, what is the current Shoreline Master Program designation of the site? NA h. Has any part of the site been classified as an "environmentally sensitive" area? No If so, specify. i. Approximately how many people would reside or work in the completed project? Between 5 and 20 people— in shifts. j. Approximately how many people would the completed project displace? None k. Proposed measures to avoid or reduce displacement impacts, if any: NA I. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: None 9. HOUSING: NA a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low-income housing. b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low-income housing. C. Proposed measures to reduce or control housing impacts, if any: 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? NA. A job trailer. b. What views in the immediate vicinity would be altered or obstructed? None C. Proposed measures to reduce or control aesthetic impacts, if any: None 11. LIGHT AND GLARE a. What type of light or glare will the proposal produce? What time of day would it mainly occur? None 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? Hood Canal b. Would the proposed project displace any existing recreational uses? No If so, describe. C. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: None 13. HISTORIC 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. No b. Generally describe any landmarks or evidence of historic, archaeological, scientific, or cultural importance known to be on or next to the site. None C. Proposed measures to reduce or control impacts, if any: None 14. TRANSPORTATION: a. Identify public streets and highways serving the site and describe proposed access to the existing street system. Show on site plans, if any. See site plan. Log Yard Road. 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. No C. How many parking spaces would the completed project have? How many would the project eliminate? 10 or as many as needed for the crew. 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 proposal will require the construction of a 1240 foot, by 24 feet wide gravel road. 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. 40 per day plus 10 a peak hour. g. Proposed measures to reduce or control transportation impacts, if any: None 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)? No If so, generally describe: b. Proposed measures to reduce or control direct impacts on public services, if any: None 16. UTILITIES: a. Circle utilities currently available at the site: electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system, other: A private water well and power. 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. A new water well. 5000 GIRD. No water rights are required for a well of 6000 GPD. 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: 0 !�� �r r iN'T cxpar�s KURT'S PRECAST DEVELOPMENT DRAINAGE REPORT By: Pat McCullough, P.E. ESA Inc. June 16, 2005 EXISTING CONDITIONS The project is located north of Belfair Washington, Section 20, Township 23, Range 1 W in Mason County off Log Yard Road NE. A topography and Vicinity map are included with the submittals. The average grade of the existing site is approximately 4%. The existing soils are Alderwood Gravelly Sandy Loam per the Mason County SCS Soils Survey. There is approximately 3 feet of weathered sands and gravels over hard pan. There is no standing water on the site. The site has been cleared but before the land was cleared the ground cover was small second growth trees and brush. The soils were classified as Type C. PROPOSED DEVELOPMENT The proposed development consists of clearing and grading, construction of a gravel ingress and egress road, a piped storm drainage system, a storm water infiltration system, industrial fabrication and lay down area for concrete precast products, and a new potable water well. At this stage of development of the 4.99 acre site development will include 0.7 acres of gravel road, 0.38 acres of gravel covered, product staging and storage area, and 0.27 acres of product development area(this area includes a 10' wide by 120' long concrete fabrication pad). The remainder of the site will be graded and hydroseeded to await future development. Water supply will be by potable water well on site that has yet to be drilled. Additional permits will be applied for when development proposals are developed for the remainder of the site. The site, grading and temporary erosion and sedimentation control drawings are included with this submittal. DESIGN PARAMETERS Design Storm 6-month: 2.1 inches, 2 year: 3.5 inches, 10 year: 5.0 inches, and 100 year: 6.5 inches • The existing onsite soils are Class C soils and were assigned a uniform CN number of 81 with an assumed time of concentration of 10 minutes. • Post developed soils were assigned a composite CN number of 89 with a proposed time of concentration of 10 minutes. • Post developed storm water will be directed to a piped storm drainage system and then to a 5.5-foot deep infiltration facility located in the far southern corner of the site (the natural low area). Infiltration will be through native sandy, gravelly soils with a 12"+top layer of organics that has an infiltration rate of 1-inch per hour(conservatively estimated). The volume of the drainage basin is such that it will retain the post developed 100-year storm event for the current development of the site at a pond elevation of 331.91 feet, or 0.5 feet below the overflow weir. The site of the proposed drainage infiltration pond has been cleared but will be otherwise left undisturbed so as to optimize water quality treatment by the organic top layer of soil. • Most of the post developed storm water will be directed to the infiltration system. Areas not directed to the facility are considered bypass. The total bypass discharge is less than the allowable 2, 10, and 100-year predeveloped discharge. DOWNSTREAM ALALYSIS A downstream analysis was not required at this stage of development of the site due to the excessive capacity of the proposed infiltration facility. The infiltration facility was designed to allow the 100-year storm event to infiltration into the existing soils. EROSION CONTROL Erosion will be controlled during construction by the use of silt fences, construction entrance and if necessary, sedimentation ponds as required with the State's Best Management Practices. An erosion control drawing is included with the submittal. HYDRAULIC COMPUTATIONS The latest version of the Engenious Systems Storm Shed 2G was used to analyze the existing and proposed conditions and to size the infiltration facility. The results of the computer analysis are included in this report.