CE 5327 - GEOTECHNICAL PRACTICE FOR WASTE DISPOSAL Homework Assignment # 3 (Due Friday, February 11, 2005) 1. Subchapter L of 30 TAC Chapter 330 deals with Location Restrictions applicable to MSWLF units. The following questions are based on the information found in the above subchapter. (a) If the proposed MSWLF site is located within a 5 mile radius of any airport runway end used by turbojet or piston-type aircraft, what steps must be taken by the owner/operator of the facility? If the proposed site is located within 10,000ft of any airport runway end used by turbojet aircraft or within 5,000 ft of any airport runway end used by only piston-type aircraft what additional steps are they required to take? (b) What is meant by the term “Holocene Time?” What minimum setback distance for MSWLFs is desired from a geologic fault that has had displacements in Holocene times? Under what circumstances should more detailed study of the site be carried to ensure integrity of the facility? (c) How is “Seismic Impact Zone” defined? (d) What are some examples of “Unstable Areas” described in §330.305? What is meant by “Karst Terrains?” 2. Location Standards for Industrial Solid Waste and Municipal Hazardous Waste Landfills are found in Subchapter G of 30 TAC Chapter 335. The following questions are based on the information found in the above subchapter. (a) Do the location standards for industrial and hazardous waste landfills have any restriction with respect to landfill siting in the vicinity of airports? (b) Under what circumstances may a landfill located within a 100-yr flood plain be permitted? (c) Can you apply for a landfill to be located in an area overlying regional aquifers? What additional requirements must be satisfied for you to do so? (d) Compare Location Standards for Industrial Solid Waste and Municipal Hazardous Waste Landfills (Subchapter G; Chapter 335) versus those for Municipal Solid Waste Landfills (Subchapter L; Chapter 330) and list a minimum of 5 additional criteria that must be satisfied by a proposed site for a Hazardous Waste Landfill. 3. (a) Give 4 examples of socio-geographic factors that must be taken into consideration during the siting of a waste containment facility and briefly explain how each of these may influence the site selection process. (b) What is meant by exclusionary criteria? Explain using examples. (c) Explain how such exclusionary criteria can be incorporated into a site screening process using graphical procedure. (See http://www.cheyennecity.org/locational_policies.htm) 4. (a) DRASTIC Procedure is used to establish relative ranking for candidate sites based on technical considerations. What technical considerations are included in this procedure? (b) Which factors are given heaviest weight? Which factors are given least weight? (c) The following information has been obtained for a candidate waste disposal site in the Southern High Plains region. Use this example to demonstrate the steps involved in the calculation of the DRASTIC Index for a site. Depth to water table = 80-90 ft Net Recharge = 1.5 inches Aquifer Media = Sand and gravel Topography = average slope of 4-6% Vadose Zone Media = Sand/gravel with significant silt/clay Hydraulic conductivity = 800 gpd/ft 2 . described in 33 0 .30 5? What is meant by “Karst Terrains?” 2. Location Standards for Industrial Solid Waste and Municipal Hazardous Waste Landfills are found in Subchapter G of 30 TAC Chapter 33 5. The. CE 532 7 - GEOTECHNICAL PRACTICE FOR WASTE DISPOSAL Homework Assignment # 3 (Due Friday, February 11, 2005) 1. Subchapter L of 30 TAC Chapter 33 0 deals with Location Restrictions. Municipal Hazardous Waste Landfills (Subchapter G; Chapter 33 5) versus those for Municipal Solid Waste Landfills (Subchapter L; Chapter 33 0) and list a minimum of 5 additional criteria that must