Table 1
Inspection Frequency and Maintenance Checks
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CP = Certified Pumper, LI = Licensed Installer, OM = Certified
Operation, Monitoring, and Maintenance Specialist, PL = Proprietary
Device Licensee (also must be certified as OM&M Specialist), PO
= Property Owner.
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Inspection Interval
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(Residential) Standard or Pressure Dosed System*
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(Commercial) Standard or Pressure Dosed System*
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Mound or Single-Pass Sand Filter
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ATU or Packed-Bed Filter
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Disinfection Units (Telemetry required on all disinfection units)
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First 6 weeks
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|
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PL or OM (Required)
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First 3 months
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OM (Recommended)
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OM (Required)
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PL or OM (Required)
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Monthly
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|
|
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Annually
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Pressure dosing system PL or LI or PO or OM (Recommended*)
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OM (Recommended*)
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OM (Required)
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|
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As required by the manufacturer or NSF, but not less than once
a year
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|
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PL or OM (Required)
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PL or OM (Required)
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Year 1—2 of cycle
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|
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Year 3 of cycle
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|
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Year 4 of cycle
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|
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Year 5 of cycle
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CP or LI or PO or OM (Recommended*)
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*
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Standard and pressure dosed systems are subject to Section 6.32.240(A)(3) of this chapter and may require inspections and maintenance checks should an operating permit be required.
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Table 2
Soil Application Rate Based on USDA Textural Classification
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---|---|---|
USDA Textural Classification
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Soil Group
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Application Rate (gdp/ft2)
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Course to medium sand
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A
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1.2 or less
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Fine sand, loamy sand
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B
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1.1 to 0.8 or less
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Sandy loam, loam
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C
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0.8 to 0.6 or less
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Silt loam
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D
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0.6 to 0.4 or less
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Clay loam, sandy or silty clay loam, sandy clay
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E
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0.4 to 0.1 or less
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Table 3
Minimum Setback Requirements
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---|---|---|
Distance Required From:
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From Disposal Field
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From Septic Tank, ATU, or Lined Sand Filter
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Wells (domestic and public)
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150′ – (deep trench, seepage pits)
100′ – (leach lines)
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100′
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Surface Waters1
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|
50′
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Reservoirs or lakes
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200′
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Year-round springs, streams, creeks, ponds, rivers
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100′
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Intermittent streams, drainage swales
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50′
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Curtain drains – Vertical/curtain drains
|
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Up-gradient of system
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20′
|
20′
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Down-gradient of system
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50′
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25′
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Cuts manmade in excess of 2.5 feet (top of down slope cut) or
escarpments2
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4 x the height of the bank, to a maximum of 50′
|
20′
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Property lines, foundation lines for any structure including
garages, out-buildings, in-ground swimming pools, water lines 3,4
|
5′
|
5′
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Easements
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Clear
|
Clear
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Notes:
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---|---|
Setbacks not specified in this table shall conform to the most
recent Board of Supervisors-adopted Uniform Plumbing Code.
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1
|
Setbacks from streams and creeks must be measured from bank
drop-off or mean yearly high water mark. Reservoirs and lakes are
differentiated from ponds by being greater than one acre-feet in size.
Landscape ponds less than 5,000 gallons are exempt from these setbacks.
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2
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The height (in feet) of the cut or escarpment as measured from
the toe of the cut or vertically to the projection of the natural
ground slope.
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3
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The Department encourages the placement of septic tanks and
other treatment units as close as feasible to the minimum separation
from the building foundation in order to minimize possible clogging
of the building sewer.
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4
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Unless otherwise approved by the Department, crossing of water
lines and effluent sewer lines is prohibited.
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Table 4
Design Flow Rates
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Type of Business or Facility
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Minimum Flow (Gallons per Day)
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Barbershop/salon
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100 (per chair)
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Camps (4 persons per campsite, where applicable)
|
|
with central comfort stations
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35 (per person)
|
with flush toilets, no showers
|
25 (per person)
|
construction camps (semi-permanent)
|
50 (per person)
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day camps (no meals served)
|
15 (per person)
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resort camps (night and day) with limited plumbing
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50 (per person)
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Churches
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|
with kitchen
|
15 (per seat)
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without kitchen
|
5 (per seat)
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Country clubs
|
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per resident member
|
100
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add per nonresident member present
|
5
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add per employee
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15 (per 8-hour shift)
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Dentist office
|
|
per wet chair
|
200
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add per non-wet chair
|
15
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Factories
|
|
with shower facilities, no food service or industrial
wastes
|
35 (per person, per shift)
|
without shower facilities, no food, service or industrial
wastes
|
15 (per person, per shift)
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Hospitals
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250 (per bed space)
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Hotels or motels
|
|
with private baths
|
100 (per room)
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without private baths
|
80 (per room)
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Institutions other than hospitals
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125 (per bed)
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Laundries, self-service washing machines
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500 (per machine)
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Limited agricultural building
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100 (per building)
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Mobile home parks
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250 (per space)
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Parks, public picnic areas
|
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with toilet wastes only
|
5 (per person)
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with bathhouses, showers and flush toilets
|
10 (per person)
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Restaurants
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|
with multi-use utensils
|
50 (per seat)
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with single service utensils
|
25 (per seat)
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with bars and/or cocktail lounges
|
50 (per seat)
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Residential structures
|
|
second dwelling, condominium, multifamily (duplex,
triplex, etc.)
|
Same as for full single-family residence
|
guesthouse
|
Same as for additional bedroom
|
Retail stores
|
|
for customer add for each employee
|
Use comparable flows from similar businesses and population
|
add for each employee
|
15 (per 8-hour shift)
|
Shopping center
|
2 (per parking space)
|
Schools
|
|
boarding
|
100 (per person)
|
day (without gyms, cafeterias or showers)
|
15 (per person)
|
day (with gyms, cafeterias and showers)
|
25 (per person)
|
day (with cafeteria, no gym or showers)
|
20 (per person)
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Service stations
|
500 for 1st pump set, 300 for each additional
|
Swimming pools and bathhouses
|
10 (per person)
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Theaters
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|
movie
|
5 (per seat)
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drive-in
|
20 (per car space)
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Recreational vehicle parks
|
|
without individual water and sewer hookups
|
50 (per space)
|
with individual water sewer hookups
|
100 (per space)
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