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a. General description of the site: <br /> (circle one):CFlat)olling, hilly, steep slopes, mountainous, other <br /> b. What is the steepest slope on the site (approximate percent slope)? Site is sloped towards <br /> the NW at about 2%;Paved areas are also sloped to existing storm drains. The Pai9nt booth will <br /> not affect storm water runoff <br /> c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, <br /> muck)? If you know the classification of agricultural soils, specify them and note any <br /> agricultural land of long-term commercial significance and whether the proposal results in <br /> removing any of these soils. The current site is paved. We are removing existing paving in <br /> order to install a new structural slab. We will be removing about 8"of surficial soils(base <br /> material from previous paving. <br /> d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, <br /> describe. No unstable soils In the vicinity;no evidence of unstable soils. <br /> e. Describe the purpose, type, total area, and approximate quantities and total affected area <br /> of any filling, excavation, and grading proposed. Indicate source of fill. Area of new paving is <br /> approx. 1,400 sf/depth of excavation is 8";total volume of new materials(paving and gravel <br /> base)is approximately 35 cubic yards <br /> f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. <br /> No erosion anticipated from the proposed work. Site is flat and on site work is paving only. <br /> g. About what percent of the site will be covered with impervious surfaces after project <br /> construction (for example, asphalt or buildings)? The existing site is 100%impervious;the site <br /> will remain impervious. <br /> h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: We <br /> will install filter fabric in catch basins and coir logs to direct surface water during paving <br /> operations <br /> 2. Air <br /> a. What types of emissions to the air would result from the proposal during construction, <br /> operation, and maintenance when the project is completed? If any, generally describe and <br /> give approximate quantities if known. <br /> The Paint Booth is equipped with a 3-stage filtration system. The first stage is a polyester <br /> media with an efficiency of 99.66%with a holding capacity of almost two pounds per square <br /> foot. <br /> The second stage is panel of 3 layered polyester media impregnated with two non-migrating <br /> tackifiers. <br /> The third stage is a bag filter specialized for small particle sizes, which is designed to meet <br /> efficiency requirements of the aerospace NESHAP guidelines <br /> b. Are there any off-site sources of emissions or odor that may affect your proposal? If so, <br /> generally describe. <br /> There are no off-site sources of emissions or odors that will affect the project. <br /> c. Proposed measures to reduce or control emissions or other impacts to air, ill any: <br /> Minimize the operating time of exhaust systems serving the booth only to when coating <br /> operations occur. All coatings containers will be sealed when not being used. <br /> 3. Water <br /> a. Surface Water: <br /> 1) Is there any surface water body on or in the immediate vicinity of the site (including <br /> year-round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe <br /> SEPA Environmental checklist(WAC 197-11-960) July 2016 Page 3 of 10 <br />