Eagle Ridge Onsite Survey 08-30-05 Final

2005 On-Site System Survey Eagle Ridge Clermont County Sewer District Clermont County General Health District Clermont County Office of Environmental Quality

Introduction
Paul Braasch
Clermont County
Office of Environmental Quality

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

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.

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 a noncompliant System

OEPA Criteria Parameter 1000 cfu/100 mL Fecal 15 mg/L CBOD5 18 mg/L SS 3 mg/L Ammonia OEPA Criteria

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

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%).

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.

Survey Results

Eagle Ridge CBOD5

Eagle Ridge Suspended Solids

Eagle Ridge Ammonia

Eagle Ridge Fecal Coliform

Identified Problem

Solutions
Repair or replace on-site treatment system
Install centralized sewer system
Others?

Robert Wildey
Clermont County
General Health District

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 hasn’t something been done before now?

Onsite Systems
Why can’t 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.

Wisconsin Mound Construction

Millennium Mound Construction

Glendon Bio-Filter Construction

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.

Why can’t 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 90’s. 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.

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.

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.

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 Ohio’s HSTSs.

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 HSTS’s when possible by installing central sewers or switching to non-discharging systems.

Centralized Sewer System
Lyle Bloom
Clermont County
Sewer District

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)

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)

$15,250.00 $5,250.00 $10,000.00 TOTAL $525.00 $25.00 $500.00 $500.00 20 $550.00 $50.00 $500.00 $1,000.00 19 $575.00 $75.00 $500.00 $1,500.00 18 $600.00 $100.00 $500.00 $2,000.00 17 $625.00 $125.00 $500.00 $2,500.00 16 $650.00 $150.00 $500.00 $3,000.00 15 $675.00 $175.00 $500.00 $3,500.00 14 $700.00 $200.00 $500.00 $4,000.00 13 $725.00 $225.00 $500.00 $4,500.00 12 $750.00 $250.00 $500.00 $5,000.00 11 $775.00 $275.00 $500.00 $5,500.00 10 $800.00 $300.00 $500.00 $6,000.00 9 $825.00 $325.00 $500.00 $6,500.00 8 $850.00 $350.00 $500.00 $7,000.00 7 $875.00 $375.00 $500.00 $7,500.00 6 $900.00 $400.00 $500.00 $8,000.00 5 $925.00 $425.00 $500.00 $8,500.00 4 $950.00 $450.00 $500.00 $9,000.00 3 $975.00 $475.00 $500.00 $9,500.00 2 $1,000.00 $500.00 $500.00 $10,000.00 1 PAYMENT PAYMENT BALANCE TOTAL INTEREST @ 5% PRINCIPAL YEARLY PRINCIPAL PYM.

Sanitary Sewer Construction

Sanitary Sewer Construction, Cont’d

Sanitary Sewer Restoration

Final Restoration

Final Restoration, Cont’d

Future
Indicate support, opposition or other ideas
Comment submittal by September 14, 2005

Questions & Comments
Copy of this presentation available at:
www.oeq.net

Copy of this presentation available at:
www.oeq.net

Conceptual Sewer Plan

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Eagle Ridge Onsite Survey 08-30-05 Final

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Eagle Ridge Onsite Survey 08-30-05 Final Presentation Transcript