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SR0084741_SSNL
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SR0084741_SSNL
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Last modified
2/1/2022 4:16:00 PM
Creation date
2/1/2022 1:42:57 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2600 - Land Use Program
FileName_PostFix
SSNL
RECORD_ID
SR0084741
PE
2602
FACILITY_NAME
7070 S HARLAN RD
STREET_NUMBER
7070
Direction
S
STREET_NAME
HARLAN
STREET_TYPE
RD
City
FRENCH CAMP
Zip
95231
APN
19309001
ENTERED_DATE
1/18/2022 12:00:00 AM
SITE_LOCATION
7070 S HARLAN RD
P_LOCATION
99
P_DISTRICT
003
QC Status
Approved
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EHD - Public
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Three significant considerations must be taken into account regarding factors used in the nitrate <br />loading calculations, leading to a lower nitrate loading factor than that calculated. <br />The first consideration is the water use volume. As referenced above, the water meter readings on <br />the domestic well taken by Water Operator Mr. Sam Hedge, indicates that 26,987 gallons of water <br />were used in 2020 (2,249 gallons per month or 74 gpd), on average. However, this volume also <br />includes landscape irrigation, which is an indeterminable volume. As noted for the nitrate loading <br />calculations, 60 gpd/person, or 2,220 gpd has been used since it is promulgated in the EHD Water <br />Use Computation Factor Table and was specified by EHD for this project. <br />Secondly, it is obvious the facility is not at maximum occupancy every day of the year (as was <br />calculated) and sometimes only at a fraction of maximum occupancy. <br />Thirdly, in using the total T1CN concentration in the nitrate loading calculations, it is assumed the <br />entire organic fraction will undergo mineralization (aminization and ammonification) forming <br />ammonium, and that the entire concentration of ammonium will ultimately convert to nitrate <br />through nitrification. Although the percentage of these conversion processes is indeterminable, it <br />is certainly not 100% and may be substantially less. Additionally, the effluent receiving soils <br />adjacent to the sump structure exhibited a highly significant characteristic of mitigating <br />nitrification. <br />SSS§ 6.7, NLS§ 3.6. From the information and data referenced, the calculations and <br />recommendations presented, it can be concluded that the proposed building addition to the Haven <br />of Peace Facility can occur without causing excessive strain on the OWTS disposal structures in <br />accepting the anticipated additional flows and without exceeding the nitrate loading standards. In <br />addition, due to the subsurface explorations by Mr. Cabrera, it was determined the new building <br />addition will not encroach upon the existing leachlines. <br />Page -9- <br />Chesney Consulting
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