8-13D-9-11: SOIL CONDITIONS:

Recognition of the diverse soil behavior is useful in adjusting land use, including the urbanization, to the limitations and potentials of natural resources and the environment. Planners and others using the soil data can evaluate the impact of specific land uses on the overall productivity of the survey area or other broad planning areas and on land use patterns.

 

Table And Map: Table 1 provides engineering information related to the use of each soil unit as it relates to building sites, sanitary facilities, construction material and water management. The engineering data is based on SCS test data using known relationships between soil properties and the behavior of soils in various engineering uses. The data presented in the table can be useful in choosing alternative practices or general designs that will overcome unfavorable soil properties and minimize soil-related failures.

However, it is important to understand these data do not eliminate the need for site specific investigations, testing, and analysis.

The accompanying soils map provides a broad perspective of the soils and associated topography as well as the general diversification of the soil morphology for the Hidden Springs property.

This preliminary screening of soils properties provides a relatively normal (without unusual difficulty) geotechnical framework. Within the confines of regulatory oversight, good design practice and good construction technique there are no soils characteristics that would preclude development as planned.

1995 Field Observations and Soils Logs: Table 2: Soil logs provide a summary of the actual soil observations started in 1995, first as excavations for soils logs and also as observation wells for long-term observation of ground water level. Since the first series of observation wells, additional test pits and observation wells have been installed.

Table 31 : Ground water depth observation is a log of the depth to ground water at various observation wells and test pits. The soils map shows the approximate locations for the original observation wells and subsequent test pits and new observation wells. Several important conclusions can be drawn from the soil information mentioned above.

   •   The soils in the valley floor up to the toe of slopes are suited to both individual and community subsurface treatment systems (subject to the normal design constraints).

   •   Soils classification for the purpose of subsurface treatment systems is C-2.

   •   The relatively fine-grained soils and substantial depth to ground water at the base of the slopes offer several good options for community subsurface treatment systems.

   •   The soils characteristics at the base of the slopes should provide for very high, equivalent to tertiary, treatment of domestic wastewater.

One Hundred Twenty Acre Annexation Area. The U.S. department of agriculture natural resources conservation service has identified four (4) soil units for the one hundred twenty (120) acre annexation area, which has been reduced to ninety-seven (97) acres due to the transfer to twenty-three (23) acres to the Cartwright Ranch planned community in 2007. These units are listed below and are characterized in table 1A of this Section:

   Pierce Park

   Shadoval

   Polecat

   Quailridge

   Figure 2-F-a

   Figure 2-F-b

 

 

 

 

 

1.   See Section 8-13D-9-21 of this Article.

(Ord. 1002, 10-28-2025)