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SU0006059 SSNL
Environmental Health - Public
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VALPICO
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2600 - Land Use Program
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PA-0600207
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SU0006059 SSNL
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Entry Properties
Last modified
5/7/2020 11:32:04 AM
Creation date
9/9/2019 10:54:46 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2600 - Land Use Program
FileName_PostFix
SSNL
RECORD_ID
SU0006059
PE
2627
FACILITY_NAME
PA-0600207
STREET_NUMBER
12100
Direction
W
STREET_NAME
VALPICO
STREET_TYPE
RD
City
TRACY
Zip
95376
APN
24014024
ENTERED_DATE
5/23/2006 12:00:00 AM
SITE_LOCATION
12100 W VALPICO RD
RECEIVED_DATE
5/23/2006 12:00:00 AM
P_LOCATION
99
P_DISTRICT
005
QC Status
Approved
Scanner
SJGOV\rtan
Supplemental fields
FilePath
\MIGRATIONS\V\VALPICO\12100\PA-0600207\SU0006059\NL STDY.PDF
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EHD - Public
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pL <br /> TABLE OF CONTENTS <br /> 1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 <br /> 1.1 Subject Site and Surrounding Area Description . . . . . . . . . . . . . . . . . . . . . . . . . 2 <br /> 1.2 History of Subject Property . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 <br /> 1.3 Proposed Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 <br /> 1.4 Scope of Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 <br /> 2. SOIL SUITABILITY STUDY FINDINGS AND SITE EVALUATION . . . . . . . . . . 4 <br /> 2.1 Surface and Subsurface Soil Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 <br /> 2.2 Soil Physical Test Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 <br /> 2.3 Percolation, Infiltration and Hydraulic Conductivity Test Results . . . . . . . . . . 5 <br /> 2.4 Soil Chemical Test Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 <br /> 3. GROUNDWATER/ SURFACE WATER INFORMATION . . . . . . . . . . . . . . . . . . . 8 <br /> 3.1 Aquifer Information: Groundwater Historical Depths and Direction of Flow . 8 <br /> 3.2 Groundwater Chemistry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 <br /> 3.3 Climatic Data: Rainfall and Evapotranspiration . . . . . . . . . . . . . . . . . . . . . . . . . 9 <br /> 4. WASTEWATER SOURCE AND EFFLUENT CHARACTERIZATION . . . . . . . 11 <br /> 4.1 Wastewater Flow Projections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 <br /> 4.2 Primary Wastewater Constituents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 <br /> 4.3 Comparable Septic Tank Effluent Chemistry . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 <br /> 5. NITRATE-NITROGEN LOADING ESTIMATIONS AND VARIABLES . . . . . . . 16 <br /> 5.1 Hantzsche-Finnemore Equation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 <br /> 5.2 Crites/I'chobanoglous Formula . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 <br /> 5.3 Kaplan Parallelepiped Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 <br /> 5.4 Calculation of Alkalinity Requirement for Nitrification . . . . . . . . . . . . . . . . . . . 19 <br /> 6. PRELIMINARY WASTEWATER DISPOSAL SYSTEM DESIGN AND <br /> OPERATIONAL CRITERIA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 <br /> 6.1 Septic and Grease Interceptor Tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 <br /> 6.2 Wastewater Disposal Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 <br /> 6.3 Wastewater Disposal System Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 <br /> 7. CONCLUSIONS AND RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 <br /> 8. LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 <br /> 9. REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 <br /> 10. APPENDICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 <br /> Page -I- <br /> Chesney Consulting <br />
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