11576 (RPL) Hydrology ReportLOT 9, TR. 26524
THE ORCHARD, LA QUINTA, CALIFORNIA
HYDROLOGY CALCULATIONS
FOR: STROTHER CONSTRUCTION
JN:
220.009E
.DATE:
7/22/92
BY:
9
CK:
GARY PIKE
THE HOLT GROUP, INC.
�V
V
PALM SPRINGS, CA 92262
LOT 9, TR. 26524
THE ORCHARD, LA QUINTA, CALIFORNIA
HYDROLOGY CALCULATIONS
FOR: STROTHER CONSTRUCTION
JN:
220.009E
.DATE:
7/22/92
BY:
PHILLIP FOMOTOR
CK:
GARY PIKE
THE HOLT GROUP, INC.
275 N. EL CIELO #D-3
PALM SPRINGS, CA 92262
(619) 320-0045
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Soil name and
map symbol
SOIL SURVEY
TABLE 12.—Soil and water features—Continued.
Hydro- Flooding iligh water table Bedrock
logic
group Frequency Duration Months Depth Kind Months Depth Hardness
N Z.
Myoma: - .
Ma B, Ma D -----------
A
Mc-----------------A
Niland:
Na B---------=------
C
NbB----------------
C
Omstott:
OmD----------------
C
Ors:
Omstoit part.......
C
Rock outcrop part.
Riverwash:
RA.
Rock outcrop:
RO. .
RTI:
Rock outcrop part.
Lithic
Torripsamments part.
D
Rubble land:
Ru.
Salton:
Sa; Sb---------------
D
Soboba:
Sol), SpE------------
A
Torriorthents: .
TO 1:
Torriorthents part:' -
Rock outcrop part.
T. a:
None------ ------•----- --------- ----- --- --- >80 ---•----
None_____. 1.5,1:00
None----- ---------------------- >6•0 ---------------- ---- >60..........
None ________________________________ 1.5-5.0 Apparent_____ Jan -Dec_-__ >Go
None ----- ------------- ------------>6.0 --- - ------ ---- --- 4-20 Rippable.
None------------------------- >0.0 -------------- ---------- 4-20 Rippable.
None-- --------------- --------- >0.0 --• ------ ----- -- 1-10 Hard.
None----- ------ ------- ------- 2.0-5.0 Apparent---- Ian -Dec__ >60 .........
None----- ------------ ---------- >6.0 ............... ---------- >60 ---------
TpE, TrC, TsB ....... A None ------ --------------+----------- >(t.0------------..........>�---------
= This mapping unit is made up of two or more dominant kinds of soil. See mapping unit description for the composition and
behavior of the whole mapping unit.
parent; and the months of the year that the water and on otherobservations during. the mapping of the
table commonly is high. Only saturated zones above a soils. The kind of bedrock and its hardness as related
depth of 5 or 6 feet are indicated. to ease of excavation is also shown. Rippable bedrock
Information about. the seasonal high water table can be excavated with a single -tooth ripping attach -
helps in assessing the need for specially designed ment on a 200 -horsepower tractor, but hard bedrock
foundations, the need for specific kinds of drainage generally requires blasting.
systems, and the need for footing drains to insure dry
basements. Such information is also needed to decide
whether or not construction of basements is feasible Formation, Morphology, and
and to determine how septic tank absorption fields and Classification of the Soils
other underground installations will function. Also, a
seasonal high water table affects ease. of excavation. This section contains descriptions of the major fac-
Depth to bedrock is shown for all soils that are tors of soil formation as they occur in the Coachella
underlain by bedrock at a depth of 5 to 6 feet or less. Valley Area, a summary of significant morphological
For many soils, the limited depth to bedrock is a part characteristics of the soils of the Area, an explanation
of the definition of the soil series. The depths shown of the current system of classifying soils by categories
are based on measurements made in many soil, borings broader than the series, and a table showing the clas-
t
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