AG 1994 10 17 - Laserfiche WebLink

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7) The existing topography and features of the disposal site including: general surface water drainage patterns and watersheds, I00 year floodplains; perennial and intermittent streams, rivers, and lakes. Under this task, CDM will contract with an aerial photography firm to prepare the aerial aerial survey fh~m that photographed the existing landfill photograph the Option A and B areas in case the information would be needed at a later date. CDM will contract with this firm, rather than solicit proposals from other firms, since they already have the required photographs in hand. TASK 3 - SITE HYDROGEOLOGIC REPORT In accordance with Rule .1618 (c)(3), CDM will prepare a Site Hydrogeologic Report for the preferred site option in accordance with Rule .1623(a). The intention of this task is to complete all of the necessary field work so that a Site Hydrogeologic Report could be prepared for either site option. However, this task only includes the preparation of a report for one of the options. As stated at the beginning of this Amendment, CDM will proceed initially with the field work on Option A while additional ground water monitoring samples are taken and analyzed on the existing landfill. Once the results are available, CDM will review them with County staff and a decision will be made as to whether or not to proceed with the subsurface investigation of Option B. If CDM is directed to proceed with the field work on Option B, it is understood that the Site Hydrogeologic Report will then be prepared for Option B. Task 3.1 - Prepare Boring Plan 3.1.1 CDM will prepare a boring plan for which the numbers, locations, and depths of the borings are sufficient to provide an adequate understanding of the subsurface conditions and groundwater flow regime of the uppermost aquifer at the site. The number and depths of borings required to determine the hydrogeologic characteristics of the site will be prepared and presented to the Solid Waste Section's (SWS) Hydrogeologist for comment. At a minimum, there shall be an average of one boring for each ten acres of the proposed Option A and B sites. Adjustments in the plan will be made as appropriate based upon the SWS's comments. All borings intersecting the water table shall be converted to piezometers or monitoring wells. 3.1.2 CDM will prepare a testing program for the borings which describes the frequency, distribution, and type of samples to be taken and the methods of analysis (standard ASTM test methods or methods approved by the Division) used to obtain, at a minimum, the following information: (A) Standard penetration - resistance; (B) Particle size analysis;