Hydraulic Properties Sample Clauses

Hydraulic Properties. In order to assess the hydraulic characteristics of soils, laboratory or site tests must be performed on high quality natural samples. a) The soil-water retention curve may be investigated through: • tests in pressure plates or volume extractors: by the axis translation technique, such tests allow to assess the link between matric suction and water content following drying and wetting procedures. Only under the assumption of rigid skeleton it is possible to evaluate the parameters which describe the curve, i.e. the air-entry value (ua-uw)b, or AEV, the residual degree of saturation, Srr, and the pore size index, λ. For granular soils, these tests do not allow to investigate the saturation zone of the retention curve and thus to determine the air-entry value; • tests in a suction controlled oedometer and in a suction controlled triaxial apparatus: the suction controlled apparatus allows to determine the soil-water retention curve (hence, the parameters (ua-uw)b, Srr, λ) taking into the account the soil compressibility during the test itself. In this way the degree of saturation (or volumetric water content) - suction relationship is directly obtained; the coefficient of compressibility at given stress levels can also be determined; • tests in hanging water column by progressive desaturation of initially saturated soil samples to an established energy state: the test is very useful for granular soils since it allows to exploit the very narrow air-entry region and part of the capillary zone of the water characteristic function and, hence, to determine the parameter (ua-uw)b; • drying and wetting tests using a minitensiometer installed in the specimen: even though this technique causes some disturbance, it seems useful in the investigation of the characteristic curve of granular soils both in drying and wetting paths when approaching the saturation zone. Even though this is an unconventional test (and for this reason it is not recommendable), it is quite common, cheap and quick. The experimental results obtained by described tests can be fitted by one of the formulations proposed in literature in order to obtain the parameters required by numerical codes (i.e. the parameters α, m, n, θr, θs in the equation of Xxx Xxxxxxxxx (1980) adopted in the I-MOD3D code, or Xxxxxxx’x parameter α adopted in the TRIGRS code). Since only some numerical codes offer the possibility to account for hysteretic behaviour of soil, the procedure adopted in the laboratory (drying or w...
Sample 1
Hydraulic Properties. Hydraulic properties of hydrostratigraphic units that help define the flow characteristics of the aquifer must be addressed. These include the transmissivity, hydraulic conductivity, storativity, and specific yield. Results from available aquifer tests for the model area shall be compiled and assessed including any information from the groundwater conservation districts. Additionally, information on hydraulic properties from previous modeling studies may be incorporated in the current project, as appropriate. Specific capacity tests shall also be compiled from TWDB files, and from Texas Commission on Environmental Quality files, and transmissivity and hydraulic conductivity estimated using analytical or empirical techniques (for example, Xxxx, 2001). Project managers are encouraged to conduct, analyze, and use additional aquifer tests, if they believe the budget can support them. Transmissivity, hydraulic conductivity, storativity, and specific yield shall be statistically analyzed for each hydrostratigraphic unit. Special care must be taken in considering the completion zones of the test xxxxx and how they relate to the aquifer. Maps of the spatial distribution for these properties shall be presented for each hydrostratigraphic unit using the appropriate interpolation techniques given the amount of data and apparent trends (for example, geostatistical techniques). If the information is available, hydraulic properties shall be related to and distributed according to the known geologic characteristics of the aquifer (for example, texture and net-sand thickness possibly associated with cut banks and point bars or correlated sedimentary facies). Specific or general information on vertical hydraulic conductivity for each hydrostratigraphic unit shall be compiled and/or calculated and related to known geologic and hydrogeologic conditions. If possible, vertical hydraulic conductivity and storativity shall be distributed according to geologic information (for example, texture, net-sand thickness, horizontal beddings, and sedimentary facies). Horizontal anisotropy shall also be defined, discussed, and estimated, if appropriate.
Sample 1
Hydraulic Properties. See Appendix A Section 3.1.8 and include the following:  A discussion of the approach used to estimate hydraulic properties,  Histograms of hydraulic conductivity, specific yield (if appropriate), storativity/ for each hydrostratigraphic unit as well as model layer, in case they are different,  Map of spatially distributed hydraulic conductivity, specific yield (if appropriate), storativity for each hydrostratigraphic unit as well as model layer, in case they are different,  Net sand thickness maps, if applicable, and  Map of geologic sedimentary facies and paleo-geography, if applicable.
Sample 1

Related to Hydraulic Properties

  • Underground Storage Tanks In accordance with the requirements of Section 3(g) of the D.C. Underground Storage Tank Management Act of 1990, as amended by the District of Columbia Underground Storage Tank Management Act of 1990 Amendment Act of 1992 (D.C. Code § 8-113.01, et seq.) (collectively, the “UST Act”) and the applicable D.C. Underground Storage Tank Regulations, 20 DCMR Chapter 56 (the “UST Regulations”), District hereby informs the Developer that it has no knowledge of the existence or removal during its ownership of the Property of any “underground storage tanks” (as defined in the UST Act). Information pertaining to underground storage tanks and underground storage tank removals of which the D.C. Government has received notification is on file with the District Department of the Environment, Underground Storage Tank Branch, 00 X Xxxxxx, X.X., Xxxxx Xxxxx, Xxxxxxxxxx, X.X., 00000, telephone (000) 000-0000. District’s knowledge for purposes of this Section shall mean and be limited to the actual knowledge of Xxxxxx Xxxxx, Property Acquisition and Disposition Division of the Department of Housing and Community Development, telephone no. (000) 000-0000. The foregoing is set forth pursuant to requirements contained in the UST Act and UST Regulations and does not constitute a representation or warranty by District.

  • Underground Facilities All underground pipelines, conduits, ducts, cables, wires, manholes, vaults, tanks, tunnels, or other such facilities or attachments, and any encasements containing such facilities, including without limitation those that convey electricity, gases, steam, liquid petroleum products, telephone or other communications, cable television, water, wastewater, storm water, other liquids or chemicals, or traffic or other control systems.

  • Pipelines Developer shall have no interest in the pipeline gathering system, which gathering system shall remain the sole property of Operator or its Affiliates and shall be maintained at their sole cost and expense.

  • Underground Utilities Any required ground digging or subsurface work shall be done in accordance with Chapter 556, Florida Statutes. It shall be the responsibility of CONTRACTOR to have all underground utilities located before any work begins (Sunshine State One Call 0-000-000-0000). The repairs of any damaged underground utilities as a result of the work being performed by CONTRACTOR shall be the responsibility of CONTRACTOR. The proper utility company shall be contacted immediately to expedite the repairs, if damage has occurred. CONTRACTOR will notify the COUNTY and provide a written explanation of the incident within two (2) days of the damage to any underground utilities.

  • Plant The expression ‘Plant’ as used in the tender papers shall mean every temporary accessory necessary or considered necessary by the Engineer to execute, construct, complete and maintain the work and all altered, modified, substituted and additional works ordered in the time and the manner herein provided and all temporary materials and special and other articles and appliance of every sort kind and description whatsoever intended or used therefore.

  • Gas If Customer has selected a Gas Fixed Rate, Customer’s Price will be based on the Fixed Rate(s), plus the Administration Charge, set forth in the Application, which includes RITERATE ENERGY’s compressor fuel and transportation charges, administrative and transaction costs and the Gas Balancing Amount and any Regulatory Charges (defined below).

  • Project 3.01. The Recipient declares its commitment to the objectives of the Project. To this end, the Recipient shall carry out the Project in accordance with the provisions of Article IV of the General Conditions.

  • Porcupine Site Highway 11 and the City of Timmins Thunder Bay and District Toronto/York-Peel

  • Project Site The “Project Site” is the place where the Work is being carried on.

  • Underground Tanks If underground or other storage tanks storing Hazardous Materials located on the Premises or the Project are used by Tenant or are hereafter placed on the Premises or the Project by Tenant, Tenant shall install, use, monitor, operate, maintain, upgrade and manage such storage tanks, maintain appropriate records, obtain and maintain appropriate insurance, implement reporting procedures, properly close any underground storage tanks, and take or cause to be taken all other actions necessary or required under applicable state and federal Legal Requirements, as such now exists or may hereafter be adopted or amended in connection with the installation, use, maintenance, management, operation, upgrading and closure of such storage tanks.