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2. 2005On-Site System Survey Eagle Ridge Clermont County Sewer
District Clermont County General Health District Clermont County
Office of Environmental Quality
3. Introduction
Paul Braasch
Clermont County
Office of Environmental Quality
4. Project History
Wastewater Master Plan - 1996
The project was included in the County Capital Improvement Plan
(CIP) - June 2001
Engineering contract for feasibility design of sanitary sewers
- December 2001
Engineering Conceptual Design - February 2005
On-Site Sampling - Spring 2005
5. Study Design
Population of interest included Eagle Ridge Subdivision.
Determined a Sample Size that provides a representative
sample.
Analyzed samples for CBOD5, Suspended Solids, Fecal Coliform,
and Ammonia.
Compared results to OEPA Criteria.
6. Parameters
CBOD5 Measure of Organic Matter present in sample.
Suspended Solids Aesthetics of Bathing Waters, Drinking Water
Palatability.
Fecal Coliform Indicates Bacterial Contamination &
potential Human Health Risks.
Ammonia Toxic to Aquatic Life.
High Concentration of any Parameter indicates anoncompliant
System
7. OEPA Criteria Parameter 1000 cfu/100 mL Fecal 15 mg/L CBOD5
18 mg/L SS 3 mg/L Ammonia OEPA Criteria
8. Criteria Values vs. WWTP Limits *WWTP Permit Limits are
Monthly Average Values 10 mg/L 15 mg/L CBOD5 12 mg/L 18 mg/L
Suspended Solids 1000 cfu/ 100 mL 1000 cfu/ 100 mL Fecal Coliform
1.46 mg/L 3 mg/L Ammonia Permit Limits* Criteria Parameter LEF WWTP
OEPA
9. Survey Results
Field Crews encountered both individual discharges and
collector lines.
Parcels identified with a collector line assumed the same
values as the sampled site.These are inferred sites.(hatched area
on maps)
90 sites sampled, 41 inferred (74%).
12. Reasons Some Sites Not Sampled
Homes with non-discharging systems.
Field crew unable to locate discharge.
System not discharging when crew was present.
No buildings on the property.
13. Survey Results
14. Eagle Ridge CBOD5
15. Eagle Ridge Suspended Solids
16. Eagle Ridge Ammonia
17. Eagle Ridge Fecal Coliform
18.
Identified Problem
19. Solutions
Repair or replace on-site treatment system
Install centralized sewer system
Others?
20.
Robert Wildey
Clermont County
General Health District
21. Clermont County Health District
Why has my subdivision been chosen to have sewers extended and
not a different one?
What are the health issues and how do they effect me?
If there is a significant health threat why hasnt something
been done before now?
22. Onsite Systems
Why cant the Board of Health increase monitoring to ensure
properly working systems in lieu of connecting to sanitary
sewers?
Could we improve or replace our existing systems?
Mounds, mounds and more mounds.
23. Wisconsin Mound Construction
24. Millennium Mound Construction
25. Glendon Bio-Filter Construction
26. Replacement considerations
Cost-$18,000 to $22,000
Maintenance-Service Contract of $250 to $350 per year.
Large portion of yard rendered unusable for other activities or
out buildings/pools.
27. Why cant I just do nothing?
This subdivision and other Aerobic Treatment Unit subdivisions
have been considered areas that needed to be sewered since sampling
of these systems was conducted in the early 90s. Now that sewers
have become available for a more reasonable cost than onsite
replacement, the health threat these systems pose can no longer be
ignored.
28. Regulatory Mandate
Federal & State laws require that any discharges of
pollutants to waters of the state be regulated under the National
Pollutant Discharge Elimination System (NPDES) permitting
program.
Home Sewage Treatment Systems (HSTSs) are not exempt from these
laws.
29. Regulatory Mandate
In December, 1999, U.S. EPA issued regulations geared at
controlling discharges & protecting water quality associated
with polluted storm water from various urbanized areas (Phase II
communities).
Phase II communities will be required to identify and eliminate
illicit discharges to their storm water systems.
HSTSs are considered illicit discharges if they are not
properly permitted.
30. Regulatory Mandate
A general NPDES permit can be issued in situations where there
are a class of similar discharges that, when operating under the
terms of the permit, have a minimal impact to the environment
either individually or as a whole.
The general NPDES permitting program provides the only
practicable means for providing NPDES permit coverage for Ohios
HSTSs.
31. Regulatory Mandate
The HSTS general NPDES permit will limit the number of
discharging systems by allowing them only when they are the only
feasible option for a residence.
Phase II communities will be required to eliminate discharging
HSTSs when possible by installing central sewers or switching to
non-discharging systems.
32.
Centralized Sewer System
Lyle Bloom
Clermont County
Sewer District
33. Centralized Sewer Estimated Costs
Tentative assessment of $9,977 per parcel (can be assessed to
property tax)
System Capacity Fee & Permit Fees totaling $2,305 (paid by
property owner at time of connection)
(continued)
34. Centralized Sewer Estimated Costs (continued)
Cost to connect structure to the sewer lateral and abandon
on-site system
Sewer bill is determined by water usage, minimum bimonthly
sewer bill is $20.35(based on 5,000 gallons of water used)