Agenda - 06-29-1992 - Laserfiche WebLink

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12 Response by Joyce Engineering: The engineers will consider a conceptual development plan for the site in relation to the existing topography and site features. The test sites will then be located in areas critical to the development of the site such as disposal areas and areas for soil borrow. The objective is to gather information on soil types and availability and depths to rock and groundwater. A sufficient number of test sites will be included in the development area to obtain.a reasonable cross section of soil types. Site activities are then planned as described in the preceding and following discussions. 6. Describe each of the categories of land disturbing activity that may be re uired and the notential im act on the land e. the use and size of test .pits . Response by Joyce Engineering: The two types of land- disturbing activities that are anticipated for site investigations are clearing to gain access to test sites and testing in the form of soil test borings and test pit excavations. Clearing may be required if geotechnical /geological information is required in wooded areas. Where possible, borings and /or test pits will be relocated to open areas to avoid clearing or to areas requiring the least disturbance. If drilling or digging in wooded areas is deemed to be essential to gathering the preliminary information required for the project, the clearing activities will consist of the least destructive methods that are feasible for given conditions. In many cases, hand clearing with bush axes or chainsaws will provide adequate access with the least amount of damage. In cases of very dense vegetation, heavy equipment may be required to clear roads to provide access to test sites. Levelling of steep slopes may also be needed in the immediate vicinity of test sites, but this can be minimized with careful test site selection. Each test site will be carefully evaluated to arrive at the least destructive method of gaining access, and land owner and forestry concerns will be given due consideration. soil test borings are drilled with a drilling rig mounted on an all- -terrain vehicle (ATV) or a four -wheel drive truck. The boring process creates a small diameter hole (approximately 6 to 10 inches in diameter) . The boreholes are either left open for a short time period (24 hours or so) or fitted with a I- to 2 -inch diameter plastic pipe prior to being backfilled to allow for groundwater measurements. The pipes are removed once adequate information is obtained and the boreholes backfilled. Land disturbance is limited to the creation and filling of the small diameter hole and spreading out of any excess soil.