HomeMy WebLinkAbout1993 12 02 - Environmental Audit ReportCity of Sebastian
POST OFFICE BOX 780127 ❑ SEBASTIAN, FLORIDA 32978
TELEPHONE (407) 589-5330 ❑ FAX (407) 589-5570
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DATE: December
2,
1993
TO: The Mayor and City Council Members Through Kay
O'Halloran, Interim City Manager /
FROM: Richard Votapka, Utilities Director �� V
SUBJECT: Environmental Audit Report for the GDU Sebastian
Highlands Treatment Plants
Please find attached a copy of the referenced Environmental Audit
Report as prepared by Engineering -Science, Inc. of Tampa, Florida.
This report is updated from the initial report completed for
General Development Utilities in September, 1992. The findings of
the updated report indicate no major environmental concerns. There
are some minor concerns, but they are not significant. Among the
minor concerns, for example, is that the thermal insulation around
the exhaust pipe for the diesel generator at the Filbert Street
water treatment plant could be material which contains asbestos.
Another concern was the oily liquid observed on the floor of the
storage shed which is caused by a small diesel fuel leak from the
tractor stored in the shed.
My major concerns were leaks and spills from the buried 2000 gallon
and 6000 gallon diesel fuel tanks for the emergency generators at
the plant. According to the report, there is no evidence of any
release of fuel from either tank. Therefore, with the exception of
minor concerns, the three sites investigated are basically
environmentally "clean" sites.
CC: Mayor and City Council Members with
Marilyn Swichkow, Finance Director
Gary Frese, Esquire, Frese, Nash &
sero/eodit
Audit Report
Torpy
ATTORNEY-CLIENT PRIVILEGED
ENVIRONMENTAL AUDIT REPORT
FOR
SEBASTIAN HIGHLANDS/
3 PARCELS
Prepared for
CITY OF SEBASTIAN
SEBASTIAN, FLORIDA
Prepared by
ENGINEERING -SCIENCE, INC.
Tampa, Florida
November 1993
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NOTICE TO INTERESTED PARTIES
To achieve the study objectives stated in this report, we were required to base
our findings on the best information available during the period of the investigation and
within the limits prescribed by our client in the agreement.
No investigative method can completely eliminate the possibility of obtaining
partially imprecise or incomplete information. Thus, we cannot guarantee that the
^ investigations completely defined the degree or extent of any contamination by
hazardous or otherwise harmful substances described in this report or, if no such
contamination was found, its absolute absence. Professional judgment was exercised in
gathering and analyzing the information obtained, and we commit ourselves to the
usual care, thoroughness, and competence of the engineering profession.
This report is not a legal opinion. It does not necessarily comply with requirements
defined in any environmental law such as the "innocent landowner defense" or "due
.. diligence inquiry". Only legal counsel retained by the client is competent to determine
the legal implications regarding any information or conclusions in this report.
Except as expressly provided for in our agreement with our client, Engineering -
Science is not responsible for any effect upon the legal rights, obligations, or liabilities
of any party or for any effect on the financeability, marketability, or value of the
property investigated in the study or for the occurrence or non-occurrence of any
transaction involving the property.
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�, TAMMMASAMID - 1 -
ATTORNEY-CLIENT PR MEGED
WAr UMM"9 3Ik7i K'13
An environmental audit was initially conducted on the Sebastian Highlands Water
Treatment Plant and Wastewater Treatment Plant parcels under the control of General
Development Utilities, Inc. (GDU). The sites support various water and wastewater
facilities that provide these utility services to the Sebastian Highlands area. The
objectives of these audits were to identify and document past and present activities or
practices that may result in potential environmental concerns. Audits of the various
sites consisted of an on-site and off-site reconnaissance, aerial photograph review,
regulatory file review, and interviews with GDU personnel knowledgeable with the
sites. A site reconnaissance was completed at each of the facility sites in August 1992
with a draft report issued for review in September 1992. An update audit was
requested and authorized by the city of Sebastian in October 1993 with the final report
being issued in November 1993.
The type and number of environmental concerns identified in these audits are not
unusual for similar facilities of their size, nature, and complexity. The majority of the
sites did not exhibit significant areas of on-site environmental concerns, with the
exception of the presence of sprayed insulation observed at the old WTP that may
require further investigation and septic tank discharges associated with the new WTP
office building. The presence of an oily liquid on the floor of the WWTP storage shed
was the primary area of concern noted at that facility. The remaining potential
environmental concerns associated with the three facilities appeared minimal consisting
of minor violations in the operation of the WWTP. The only off-site environmental
., concern at the WWTP was associated with the presence of an orange grove with
potential pesticide impacts. However, potential environmental impact is considered
minor due to the presence of a drainage ditch separating the WWTP property from the
grove.
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T. I%SEBASAmw ES - 1
TABLE OF CONTENTS
SECTION 1 - INTRODUCTION
1.1 - PURPOSE................................................................. 1-1
1.2 - SCOPE OF WORK ...................................................... 1-1
1.3 - ENVIRONMENTAL OVERVIEW ........................:........... 1-2
SECTION 2 - SEBASTIAN HIGHLANDS
2.1 - WATER TREATMENT PLANT (OLD) ............................. 2-1
2.2 - WATER TREATMENT PLANT (NEW) ............................ 2-2
2.3 - WASTEWATER TREATMENT PLANT ............................ 2-5
LIST OF FIGURES
1.1.1 - Site Location Map
2. 1.1 - Sebastian Highlands Water Treatment Plant (Abandoned) and Wastewater
Treatment Plants Vicinity Map
2.1.2 - Sebastian Highlands Water Treatment Plant (Abandoned) Site Plan
2.2.1 - Sebastian Highlands Water Treatment Plant (New) Vicinity Map
2.2.2 - Sebastian Highlands Water Treatment Plant (New) Site Plan
2.3.1 - Sebastian Highlands Wastewater Treatment Plant Site Plan
TA MEBASADM - i -
SECTION 1
INTRODUCTION
1.1 PURPOSE
Engineering -Science, Inc. (ES) has completed environmental audits at the Sebastian
Highland Water Treatment Plant and Wastewater Treatment Plant under the control of
General Development Utilities, Inc. (GDU). The purpose of these environmental
audits was to identify areas of potential environmental concern associated with
operations conducted at the various GDU facilities and properties. A total of three (3)
parcels, including two (2) water treatment plants and the wastewater treatment plant
were evaluated. The parcels addressed in the audits were as follows:
-� ■ Wastewater Treatment Plant
■ Water Treatment Plant - Old
ft ■ Water Treatment Plant - New
The general location of the sites is presented on Figure 1.1.1.
Audits of these three parcels by ES representatives consisted of an on-site
reconnaissance of each property, an off-site reconnaissance of adjacent properties, a
regulatory review of each site property and adjacent properties, a review of historical
aerial photographs, and interviews with GDU facility personnel. The purpose of the
site reconnaissance and interviews was to identify potential sources of contamination
from chemical storage areas, above ground or underground fuel storage tanks, or from
past spills or leaks at the facilities that may have adversely affected the environment.
Agency records (state and local) regarding potential environmental contamination issues
relative to the sites were examined. The nature of adjacent property uses was identified
to assess the potential environmental impact the adjacent properties may have on the
GDU properties included in the audits.
1.2 SCOPE OF WORK
The environmental audits completed for the three parcels were conducted according to
the scope of work provided in our August 11, 1992 proposal submitted to GDU. The
scope of work included a site visit to each GDU facility and an interview of personnel
who may have knowledge regarding the various sites. Photographs were also taken at
., each site. A second site visit was performed in October 1993 to update the information
obtained in the earlier visit in accordance with our October 21, 1993 proposal to the
city of Sebastian.
TA3BMEeA5A 1 - 1
SITE LOCATION MAP
FIGURE 1.1.1
NOT TO SCALE
ES ENGINEERING -SCIENCE
SEBASTIAN
1.3 ENVIRONMENTAL OVERVIEW
Several generalizations can be made for the facilities regarding various
environmental issues. These generalizations are addressed below and in specific detail
for each facility where applicable.
- Asbestos. A survey for asbestos was not included in the scope of work for this
project. However, if material was observed that could reasonably be suspected of
containing asbestos, this was reported.
Solid Waste. At a majority of the facilities, the solid waste generated was typically
composed of paper, empty containers, etc., and is generally disposed of in on-site
dumpsters. The dumpsters are regularly emptied by contract haulers and the trash is
., disposed of in local municipal or county landfill. At the facilities without garbage
service, the trash is taken by a GDU employee to the nearest public transfer station or
to another GDU facility with garbage service.
TAiB,lS� 1 - 2
During each interview, an environmental questionnaire was completed and the
following information was gathered:
■ General site information (location, history, adjacent land use).
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■ General process description.
■ Current land use and site configuration.
■ Possible hazardous materials present on-site.
■ Locations of known or suspected releases and spills.
■ Existing non -process storage tanks.
■ Location of electrical transformers and obtaining records from appropriate
electric utility companies regarding the presence of polychlorinated biphenyls
(PCB) at concentrations greater than 500 parts per million (ppm).
■ If water bodies are present or adjacent to the site, the FDEP water body
classification shall be indicated if applicable.
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In addition, ES contacted the appropriate state or local agencies regarding regulatory
status of the sites, including permits and registrations, spill reports, and non-
compliance notices. The regulatory review included the following environmental
issues: water and wastewater process, discharge, and disposal; solid waste; above
ground and/or underground storage tanks; and hazardous materials management.
..
Historical use of the properties were investigated through the use of interviews and
through a review of available aerial photographs. No title searches were conducted as a
..
part of this investigation.
1.3 ENVIRONMENTAL OVERVIEW
Several generalizations can be made for the facilities regarding various
environmental issues. These generalizations are addressed below and in specific detail
for each facility where applicable.
- Asbestos. A survey for asbestos was not included in the scope of work for this
project. However, if material was observed that could reasonably be suspected of
containing asbestos, this was reported.
Solid Waste. At a majority of the facilities, the solid waste generated was typically
composed of paper, empty containers, etc., and is generally disposed of in on-site
dumpsters. The dumpsters are regularly emptied by contract haulers and the trash is
., disposed of in local municipal or county landfill. At the facilities without garbage
service, the trash is taken by a GDU employee to the nearest public transfer station or
to another GDU facility with garbage service.
TAiB,lS� 1 - 2
Water. The GDU water treatment plants (WTP) are regulated under Chapter 17-
550, FAC (Drinking Water Standards, Monitoring and Reporting), Chapter 17-555,
FAC (Permitting and Construction of Public Water Systems), and Chapter 17-560,
FAC (Public Water System Non -Compliance Requirements). Public water systems
require construction permits that are issued by the Florida Department of
Environmental Protection (FDEP); however, the FDEP does not issue operation
permits but compliance is determined by periodic monitoring. The appropriate water
management district does issue consumptive use permits for the public supply systems.
Each water management district may conduct compliance monitoring with respect to
^ water quality and capacity.
Wastewater. GDU wastewater treatment plants (WWTP) are regulated by the
.. FDEP under Chapter 17-600, FAC (Domestic Wastewater Facilities), Chapter 17-601,
FAC (Domestic WWTP Monitoring), Chapter 17-602, FAC (Water and Wastewater
Plants Operator Certification), Chapter 17-7(5), FAC (Domestic Sludge Classification,
Utilization and Disposal Criteria), Chapter 17-640, FAC (Domestic Wastewater
Residuals), and Chapter 17-610, FAC (Reuse of Reclaimed Water and Land
,. Application). The GDU wastewater treatment facilities are required to submit monthly
operating reports and maintain compliance with respect to the current operation permit
issued by the FDEP.
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Nonprocess Storage Tanks. Nonprocess above ground storage tanks containing
petroleum products are regulated by the FDEP under Chapter 17-762, FAC.
Underground storage tanks are regulated by the FDEP under Chapters 17-761, and 17-
770, FAC. However, due to their specific use (non -vehicular) and size, these tanks
^ may qualify for specific exemptions under state and federal law. Above ground storage
must be visually inspected on a regular basis and the observations must be documented.
At this time, no further compliance issues need to be addressed. Underground storage
tanks do not require compliance monitoring wells, or daily inventory documentation.
However, by December 31, 1998, these tanks will require secondary containment and
overfill/overspill protection.
Hazardous Material Management. During the site reconnaissance, the storage of
_ hazardous or potentially hazardous substances was observed. Material Safety Data
Sheets (MSDS) were available at each of the facilities which used potentially hazardous
substances. During an on-site reconnaissance of the various facilities, it was noted that
the WTP and WWTPs use chlorine in the treatment processes. The spent chlorine
tanks are not discarded, but are returned to the supplier for refilling and distribution.
_ Each of the facilities have emergency contingency plans incorporated in Tier -2 reports
which are filed annually with the appropriate state and local agencies. The materials
TAMIZaA5� 1 - 3
observed by ES representatives at the facilities are typical in type and quantity of those
used at WTPs and WWTPs.
Air Emissions. None of the GDU facilities currently operate any air pollution
sources and air permits are not required under Chapters 17-2, Florida Administrative
Code (FAC).
Sludge Handling and Disposal. The disposal of sludges is dependent on specific
site practices. At these facilities where sludges are disposed of on-site, disposal is
permitted under the specific operating permit. However, where sludges are transported
off-site for disposal, it is the responsibility of the transporter to properly dispose of the
sludges at a permitted site in accordance with Chapter 17-640, F.A.C.
Surface Water Discharge. None of the facilities reviewed in our audit require off-
site National Pollutant Discharge Elimination System (NPDES) discharge permits as
required by the USEPA. These permits are not required since none of the facilities
discharge to waters of the state.
TA IISEBA ADM 1 - 4
SECTION 2
SEBASTIAN MGHLANDS
2.1 WATER TREATMENT PLANT (OLD)
Site Description. The site property, which contains approximately eight acres, is
located near the intersection of Manly Avenue and Donna Street in Sebastian, Indian
River County, Florida. A site location map is presented as Figure 2.1.1, and site
specific features are noted on Figure 2.1.2. The site is located in Section 18,
Township 31 South, Range 39 East.
..
The subject property, which is no longer used as a water treatment facility, contains
one high -service pump room, one 10,000 gallon hydropneumatic tank, one liquid
petroleum tank, one fiberglass chlorine building, and one 352,000 gallon storage tank.
The construction date of the facility is not known. There were two potable wells
located on the site which ranged in depth from 350 to 620 feet in depth. The wells
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were properly abandoned and grouted after their use was terminated.
Process. According to GDU personnel, extracted groundwater was aerated and
chlorinated prior to transfer to the water distribution system. No treatment processes
are currently conducted at the facility.
Adjacent Properties. Residential properties are located east and south of the site.
Schumann Lake is located west of the site, and a citrus grove is located north of the
site. The use of pesticides at the adjacent grove could be a potential environmental
concern.
Regulatory Review. A review of FDEP files for the facility indicated there are no
..
listed generators of hazardous waste, or treatment, storage, or disposal facilities or
transporters of classified hazardous waste located in the vicinity of the WTP. There
were no available files for review at the FDEP regarding the WTP operations.
_
The two previously utilized potable wells were abandoned under SJRWMD permit
numbers 3 -061 -0400 -APB and 3 -061 -0401 -APB. The wells were abandoned by
Pierson Drilling Company, Ft. Pierce, Florida in June 1988. The abandonment of the
wells consisted of filling with limerock fill material and grouting the well from the top
of the wellscreen to land surface. The wells were then cut off 12 -inches below grade.
Aerial Photograph Review. Aerial photographs from 1975, 1981, 1984 and 1992
were available for review. In the 1975 aerial photograph, the WTP is present with a
single well/pumphouse and a 52,000 -gallon storage tank. The second well/pump house
TAIBME ASAUM 2 - 1
does not appear to be present. Surrounding areas appear to be similar to current
conditions. The 1981 aerial.photograph reveals the second well/pump house has been
added. The 1984 aerial photograph reveals the 352,000 gallon storage tank has been
added and the smaller tank has been removed. The 1992 aerial photograph reveals the
WTP site as currently configured, and both wells/pump houses have been removed.
No changes from the present day configurations of the adjacent properties were noted
in the aerial photograph review.
Hazardous Materials Management. There were no hazardous materials or
® potentially hazardous materials stored at the site during the site reconnaissance. The
sprayed insulation inside the high -service pump building may need to be investigated
further to confirm the compositions of the material.
Nonprocess Tanks. There were no nonprocess tanks observed at the facility during
the site reconnaissance.
Wastewater Disposal. According to GDU personnel, a septic tank was not installed
at this location, and a laboratory was not present at this facility. Therefore, it appears
that wastewater was not generated at this location.
Transformers. There were two pole -mounted transformers adjacent to the site.
Transformers are known to possibly contain PCB in the dielectric fluid. Discussions
with the local power company, FPL, revealed that all PCB -containing transformers
have been removed from service in the Sebastian area.
Summary of Findings. With the exception of the insulation material inside the
high -service pump building, no apparent on-site environmental concerns were noted.
No apparent regulatory concerns were revealed during the FDEP file review. The
adjacent citrus grove may represent potential pesticide impacts.
2.2 WATER TREATMENT PLANT (NEW)
Site Description. The site property, which contains approximately nine acres, is
— located at 170 Filbert Street in Sebastian, Indian River County, Florida. A vicinity
map is presented as Figure 2.2.1 and site specific features are indicated in Figure
2.2.2. The site is located in Section 19, Township 31 South, Range 39 East. A canal
is located east of the plant. The facility was reportedly built in 1982.
The subject property contains two potable production wells (one is off-site), a
500,000 gallon storage tank, storage building, a 10,000 -gallon hydropneumatic tank,
an aerator, a control building including an office, laboratory, high -service pump room
and chlorine room, precipitator and chemical silo, and one washwater recovery pond
and two lime sludge ponds. Three employees are assigned to the Sebastian Highlands
WTP.
TA381lSEBATAUM 2 - 2
Process. Groundwater is withdrawn from two production wells located both on and
off-site. The two potable production wells were similar in construction and were
installed in June 1981 under SJRWMD permit numbers 3-061-0136 and 3-061-0137.
Based on a Drilling and Testing Report issued by Geraghty & Miller, Inc., the wells
were constructed to a depth of approximately 95 feet below land surface with 18 -inch
diameter surface casing. The wells were each permitted with a capacity of 700 gallon
per minute.
The pumped groundwater is aerated, softened by the lime treatment process and
filtered. The water is then treated with chlorine prior to discharge to the water
distribution system. Lime sludge generated from the treatment process is pumped to
sludge ponds located east of the treatment area.
Adjacent Properties. The properties adjacent to the site are primarily residential.
No environmental concerns were noted during the reconnaissance of adjacent
properties.
Regulatory Review. A review of FDEP files for the facility indicated there are no
listed generators of hazardous waste, or treatment, storage, or disposal facilities or
transporters of classified hazardous waste located in the vicinity of the WWTP.
There is one registered 6,000 -gallon diesel underground storage tank containing
emergency fuel. There is no record on -file with the Indian River County Public Health
Unit that this tank has been inspected.
The Sebastian Highlands WTP is currently operating under SJRWMD consumptive
use permit No. 2-061-0142UNR. According to the permit, a number of monitoring
wells are measured either weekly or monthly for drawdown evaluations. Quarterly
samples are collected from the monitoring wells for chlorides and total dissolved solids
(TDS), and monthly samples are collected from the production wells for chlorides.
Monthly reports on pumpage and water quality are submitted to the FDEP. A review
of the FDEP files identified two incidents of concern. Previously conducted chemical
analysis indicated the presence of butyl benzyl phthalate in monitoring wells #1 and #3,
and in February and April 1990 there were exceedances of the 3 T.O.N odor standard.
As requested by FDEP, in a letter dated April 18, 1990, three subsequent tests were
conducted on samples collected on May 1, 3, and 8, 1990 for odor testing and analysis.
The results.of these analyses revealed odor threshold values of one T.O.N. from
samples collected at the same sampling point as previously sampled. Laboratory
analyses conducted on January 23, 1992 revealed a concentration of butyl benzyl
phthalate below the method detection limit (MDL) of 0.01 milligrams per liter (mg/L)
on a water sample collected from monitoring well #1 located at the WT?. Subsequent
analysis conducted on a water sample collected on March 25, 1993 indicated that the
TA I8 EDASAU1lO 2 - 3
_ concentration of butyl benzyl phthalate was also below the MDL of 0.0034 mg/L. No
corrective actions or additional problems were noted in the files.
Aerial Photograph Review. Aerial photographs from 1975, 1981, 1984, and 1992
were reviewed. The 1975 and 1981 aerial photographs show the site as vacant, and
surrounding areas undeveloped with a few roads constructed. The 1984 and 1992
aerial photographs show the WTP as currently configured with the present surrounding
residential areas.
Hazardous Material Management. Chlorine cylinders (150-1b), treatment
compounds, laboratory reagents, and maintenance supplies were observed at the site.
The chlorine cylinders are capped and chained and stored in the control building. The
treatment compounds in the storage building included bags of lime, containers of dry
chlorine, containers of polyphosphate, and an open drum of caustic soda for chlorine
leaks. The laboratory reagents stored in the laboratory included sulfuric acid, EDTA,
silver nitrate, ammonium hydroxide, sodium thiosulfate, muriatic acid, and pH buffers.
The laboratory did contain the appropriate MSDS.
The laboratory lavatories and sinks discharge to a septic tank and associated
drainfield, and large volumes of discharged chemicals could potentially cause an
,c adverse affect on the septic tank operation. However, it was indicated by GDU
personnel that only minimal quantities are utilized in the laboratory; therefore, the
discharge of the diluted laboratory chemicals into the drainfield appears to represent a
minor environmental concern.
The maintenance shed stores various maintenance equipment, paints, oils, and
cleaners. No obvious spills were noted in the site reconnaissance. Used oil from the
maintenance equipment is collected and taken to the GDU facility in Port Malabar for
storage and recycling.
During the inspection of the high -service pump building it was noted that there was
thermal insulation around the exhaust pipe to the generator that could potentially be
asbestos -containing material. However, since the shed was constructed in about 1983,
with the use of asbestos -containing materials minimized, the presence of asbestos in the
.. insulation is not considered likely. Sampling and laboratory analysis would be required
to accurately identify the presence of asbestos within the insulation material. The
insulation material appears to cover about a six-foot section of piping.
Nonprocess Tanks. Currently one 6,000 gallon diesel underground storage tank is
registered at the site under FDEP Facility No. 318629917. The tank is used to supply
fuel for emergency power generation. The tank is currently not required to have
monitoring wells by state law, and no such monitoring wells are present to provide
confirmatory evidence regarding past or current releases. The operator indicated the
Tn38MF9A5A 2-4
tank inventory is checked before and after generator operations once a week. An
-� inspection by the Indian River County Public Health Unit indicated that monitoring
wells will be required for the tank at a later date.
Wastewater Disposal. Wastewater from the laboratory sinks and lavatories
discharge to an on-site septic tank and drainfield located west of the office building.
One floor drain located in the lavatory also is believed to discharge into the septic tank.
Transformers. There is one pad -mounted transformer at the site. Transformers are
known to possibly contain PCB in the dielectric fluid. According to discussions with
the local power company, FPL, all PCB -containing transformers have been removed
from service in the Sebastian area.
.. Summary of Findings. The one observed area of concern at the site is the septic
tank located west of the office building. The septic tank accepts laboratory chemical
discharge, and there is the potential that the chemicals could affect the septic tank
processes and could ultimately be discharged into the environment through the
drainfield. However, as discussed above, minimal quantities of chemicals are typically
.. used in the laboratory and potential environmental impact is considered minor. The
insulation material surrounding the generator exhaust pipe may potentially be asbestos -
containing material.
2.3 WASTEWATER TREATMENT PLANT
Site Description. The site property, which contains approximately 29 acres, is
located at the end of Bailey Drive in Sebastian, Indian River County, Florida. A
vicinity map is presented as Figure 2.1.1, and site specific features are presented in
Figure 2.3.1. The site is located in Section 18, Township 31 South, Range 39 East.
Schumann Lake is located just east of the WWTP.
.. The subject property contains one 0.300 MOD conventional activated sludge
wastewater treatment facility, including an operations building with laboratory and
office, two maintenance sheds, three percolation ponds and two sludge drying basins.
., It was reported that the facility was constructed in the early 1980s. The facility is
serviced by the employees that are assigned to the Sebastian Highland WTP.
Process. Wastewater treatment is provided by a 0.300 MOD activated sludge plant
utilizing the extended aeration process with disinfection by chlorination. Effluent
.. disposal is by three on-site percolation ponds. The ponds have a permitted capacity of
0.142 MOD, but application has been made to FDEP to re -rate the ponds to 0.160
MOD. Wet sludge is currently transported off-site by a licensed hauler.
iA38MF AD 2 - 5
According to permit requirements, groundwater samples are collected quarterly from
-. the wells monitoring the percolation ponds. Sludge generated from the treatment
process is currently transported off-site by a licensed hauler. Formerly the sludge was
dried on-site in two drying beds and disposed of in the southern portions of the
property. The sludge is sampled semi-annually.
T, �a�,,o„D 2-6
Adjacent Properties. Citrus groves are present to the extreme north and west of
the site, and the use of pesticides at the groves could be a potential environmental
concern. Schumann Lake is located east of the site, and residential areas are located
further east of the site. Potential wetland areas were observed north of the site. It was
noted during the site reconnaissance that the fence was down in the southwestern
portion of the property adjacent to the citrus grove.
Regulatory Review. A review of FDEP files for the facility indicated there are no
listed generators of hazardous waste, or treatment, storage, or disposal facilities or
transporters of classified hazardous waste located in the vicinity of the WWTP.
There is one registered 2,000 -gallon underground diesel tank for containing
,.
emergency generator fuel. An inspection was attempted by the Indian River County
Pubic Health Unit on July 31, 1991, but the tank could not be located.
The Sebastian Highlands WWTP is currently operating under FDEP permit No.
_
DO31-233039 which expires on September 28, 1998. The permitted capacity is 0.142
MGD. A review of the FDEP domestic waste files indicated the following non-
compliance issues or operational problems:
■ October 14, 1993 - New operational permit #DO31-233039 issued and expires
..
September 28, 1998.
■ August 5, 1993 - A letter from Mr. James H. Miller, P.E., representing GDU
indicated that on-site residual disposal was being discontinued. Disposal will be
achieved by contracting with an off-site licensed hauler.
■ July 27, 1993 - An FDEP letter indicated that the existing operating permit will
expire on August 15, 1993 and must be renewed.
■ June 25, 1993 - A letter from Alvin Castro, P.E. (Domestic Waste Section
_
Supervisor for FDEP) indicated that the facility must provide an agricultural use
plan or, if residuals are to be disposed of on-site, provide an on-site disposal
,.
protocol.
■ May 14, 1993 - A letter from Mr. Buddy Betschart of GDU indicated that the
flow chart recorder is repaired and operational.
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■ April 15, 1992 - An inspection at the facility noted the plant needed an operation
.. flow chart recorder.
■ March 15, 1989 - Seepage was noted on the outside structure and around the
effluent discharge line of the chlorine contact chamber.
■ July 17, 1986 - A letter from Mr. Buddy Betschart of GDU indicated that there
was a break in a four -inch diameter force main on July 11, 1986. Immediate
action was taken to correct the situation according to the letter. No indication of
the spill volume was given, and no follow-up action was noted.
.. No additional operational or non-compliance inspection problems were noted in the
file.
Aerial Photograph Review. Aerial photographs from 1975, 1981, 1984 and 1992
were available for review. The 1975 aerial photograph revealed the presence of a
structure, and what appears to be a pond located on the WWTP property. The purpose
of the pond is not known. Surrounding areas are similar to current conditions. The
1981 aerial photograph reveals the pond is filled in, but the current WWTP has not yet
been constructed. The 1984 and 1992 aerial photographs reveal the WWTP site as
currently configured. No changes from the present day configurations of the adjacent
properties were noted in the aerial photograph review.
Hazardous Materials Management. Chlorine gas cylinders (150-1b), laboratory
reagents, and maintenance supplies were observed at the site. The chlorine gas
.. cylinders are capped and chained inside a fiberglass storage building. The laboratory
reagents stored in the laboratory include pH buffers and formerly sulfuric acid. The
.. laboratory sinks discharge to a holding tank and is discharged into a lift station.
Maintenance supplies are stored in two sheds and include dry chlorine, Prestachlor
(chlorine with HTH), small amounts of weed killer, small amounts of diesel and
gasoline, floculant and maintenance equipment. Used oil is taken to the GDU Port
Malabar facility for storage and recycling. At the time of our site inspection on
October 25, 1993, an oily liquid was observed on the floor of the storage shed. A
bucket with oily fluid was also observed under a small tractor in the shed. The
operator stated that the tractor leaks some diesel and that this was the source of the oily
liquid. The bucket is used as containment to prevent further spills.
Nonprocess Tanks. Currently one 2,000 -gallon underground storage tank
containing diesel fuel is registered at the site under FDEP facility No. 318629987. The
tank is for emergency power, and is not required to have monitoring wells by current
state law. The Indian River County Public Health Unit attempted to inspect the tank on
July 31, 1991, but could not find the tank. The tank was located during our site
reconnaissance, and appears to have spill containment around the fillpipe.
T"I'Smrsnvno 2-7
Wastewater Disposal. Wastewater from the laboratory sinks and lavatories
discharges to a holding tank that is pumped into the treatment plant. Floor drains were
not noted at the facility.
Transformers. Two pole -mounted transformer were noted on the property.
Transformers are known to possibly contain PCB in the dielectric fluid. Discussions
with the local power company, FPL, revealed that all PCB -containing transformers in
the Sebastian area have previously been removed from service.
Summary of Findings. The primary visible area of environmental concern
observed from the on-site reconnaissance is the visible oily liquid on the floor of the
storage shed. The apparent source of the oily discharge is the tractor which is stored in
_ the shed. The extent of the potential impact from the discharge appears minimal,
however, the floor is constructed of wood and the total extent of impact could not be
evaluated at this time.
The site does contain a 2,000 -gallon diesel underground storage tank, but there is no
evidence in the regulatory files that a release from this tank has occurred. Minor
violations in treatment plant operation were noted since 1986, but these have since been
corrected and the resulting inspections revealed only minor or no violations.
Surrounding the site are citrus groves with potential pesticide impacts; however, due to
the presence of a drainage ditch separating the property from the citrus groves which
would tend to act as a hydraulic barrier, the potential for environmental impact is
considered to be minor.
TA IIS®A$AMP 2 - 8
FIGURES
FIGURE 2.1.1
CITY OF SEBASTIAN,
INDIAN RIVER COUNTY, FLORIDA
SEBASTIAN HIGHLANDS WASTEWATER TREATMENT PLANT
(FACILITY NO.5) AND
(ABANDONED) WATER TREATMENT PLANT (FACILITY NO.25) VICINITY MAP
0
0 300 600 900 FEET
WASTEWATER TREATMENT
PLANT FACILITY NO. 5-
0 —
CITRUS GROVE
i I
I
WATER TREATMENT
i
PLANT (ABANDONED)
i I
FACILITY NO.25
FORMER
WELL NO.2
I i
�
�—FORMER
C
�Ir j
WELL NO.
,CITRUS GROVE
?I MANLY AVE.
A.
RESIDENTIAL
v O
LEGEND
- WASTEWATER TREATMENT
PLANT FACILITY NO. 5 SITE LIMITS
F I WATER TREATMENT
L _ J PLANT FACILITY (ABANDONED) SITE LIMITS
ES ENGINEERING -SCIENCE
c^p
1 , 1 1 : 1 I 1
I i l l i l 1 I I I I I 1
CITY OF SEBASTIAN,
INDIAN RIVER COUNTY, FLORIDA
SEBASTIAN HIGHLANDS WATER TREATMENT PLANT Q
COMPLETE FACILITY (ABANDONED)
(FACILITY NO.25) SITE PLAN
FIBERGLASS CHLORINE
BLDG. FOR (2) 150# CYL.
(SHELL ONLY) �
WELL NO.2
(ABANDONED)
TO WELL NO.2 (380'!
90, /—CONCRETE SLAB
IAERATOR
O
WELL NO.1 -
(ABANDONED)
m
/PJB.
GROUND STORAGE RESERVOIR
W/AERATOR (352,000 GAL)
CONCRETE
(65' DIA. X 14' HT. t)
ES ENGIINEEIRING-SCIENCE
NOT TO SCALE
— 500 GAL. L.P.G. TANK
— 10,000 GAL.
HYDROPNEUMATIC TANK
— PROPANE POWERED
AUX. ENGINE
—ELECTRIC MOTOR (50 HP)
— PUMP
—ELEC. DRIVE/PUMP UNIT
(150 GPM)
— PROPANE POWERED
ENGINE
METER VAULT
PUMP (100 GPM)
HIGH -SERVICE PUMP
BUILDING
ELEC. DRIVE/PUMP UNIT
(100 GPM)
EXISTING CONCRETE RING
FOUNDATION (FROM PREVIOUS
52,000 GAL. STORAGE TANK)
'11
F)
C
m
m
N
1
N
FIGURE 2.2.1
CITY OF SEBASTIAN,
INDIAN RIVER COUNTY, FLORIDA
SEBASTIAN HIGHLANDS WATER TREATMENT PLANT
(FACILITY NO.24) VICINITY MAP
a 200 400 600 FEET
WELL HOUSE NO.1.
25HP/6" DISCHARG
RATED 600 GPM
(ACTUAL 480 GPM)
WATER
TREATMENT
PLANT -�
SEE DETAIL
SITE MAP -
WELL HOUSE NO.2`
40HP/8" DISCHARG
RATED 800 GPM
(ACTUAL 480 GPM}
LEGEND
WASHWATER RECOVERY
POND (510,000 GAL.)
SLUDGE POND NO.1
9f (310,000 GAL.)
SLUDGE POND NO.2
(290,000 GAL.)
�° 0a
0
t�i
LANDOVER DR.
I i i
i
I �
BARB
r ---I
I WATER TREATMENT
L --J PLANT (NEW) FACILITY NO. 24
SITE LIMITS
CONSUMPTIVE USE
PERMIT NO.2-061-0142UNR
- COMBINED TOTAL DAILY WITHDRAWAL NOT
TO EXCEED 1.53 MG. (1992)
COMBINED TOTAL ANNUAL WITHDRAWAL NOT
TO EXCEED 230.6 MG. (1992)
DER FACILITY ,#3311136 0.67 MGD
ES ENGINEERING -SCIENCE
CITY OF SEBASTIAN,
INDIAN RIVER COUNTY, FLORIDA
SEBASTIAN HIGHLANDS WATER TREATMENT PLANT
(FACILITY NO.24) SITE PLAN
WELL HOUSE NO.2
(SEE VICINITY
MAP FOR LOCATION)
HYDROPNEUMATIC
TANK
10,000 GAL. —
AERATOR
CONTROL BUILDING:
CHLORINE ROOM
(2) 150; CYLINDERS
AND INJECTOR PUMP
355KW ELECTRIC
GENERATOR --�
HIGH SERVICE PUMP
#3 600 GPM.---,
HIGH SERVICE PUMP
#2/250 GPM.
FINISHED
WATER METER
HIGH SERVICE PUMP
#1/400 GPM.
SEPTIC TANK/DRAB
FIELD
OFFICE/LAB —�
I t
I
,
R. t
_ I
�O
op
6,000 GAL. DIESEL USTJ
FIGURE 2.2.2
NOT TO SCALE
STORAGE BUILDING:
CHEMICAL MIXING TANKS
(ALUM + POLYMER ON
LINE BUT NOT USED)
DEAD STORAGE
(3 ROOMS)
PRECIPITATOR
SLUDGE RECIRCULATION
PUMP
CHEMICAL SILO
(GRIT REMOVAL BELOW)
/ WASHWATER
RECOVERY POND
(510,000 GAL.)
I
\\—TRANSFER PUMPS
BACKWASH PUMPS
BACKFLOW PREVENTERS,
AND BYPASS
GRAVITY FILTERS (3)
\—GROi
(50C
WELL HOUSE NO.2
POND
NO.1
310,000 GAL
IND STORAGE RESERVO
,000 GAL.) CONCRETE
ES ENGINEERING -SCIENCE
SEE VICINITY MAP
FOR POND NO.2
310,000 GAL. —
CITY OF SEBASTIAN,
INDIAN RIVER COUNTY, FLORIDA
SEBASTIAN HIGHLANDS WASTEWATER TREATMENT
(FACILITY NO.5) SITE PLAN
MONITORING WELL,,
T
I
SPRAY CRETE BERMI
II
SAND
TOPPING (TYP)
`
I
IM fi
I
I I
, I
PRECAST CONCRETE
TREATMENT PLANT:
AERATION NO.2
99,000 GAL. -
AERATION N0.1
204,000 GAL. -
PLANT INFLUENT 8"
AEROBIC SLUDGE
DIGESTER
62.480 GAL.
FINAL SETTLING
50,900 GAL. -
CHLORINE
CONTACT CHAMBER.'
122,070 GAL.
rPERCO
I PONDS
t4
FIGURE 2.3.1
PLANT
NOT TO SCALE
MONITORING WELL
FIBERGLASS CHLORINE STORAGE
(2) 150# CYL.
BLOWERS
OPERATION BUILDING:
LAB/OFFICE
DIESEL GENERATOR
125 KVA BAILEY DR.
I DIESEL FUEL
STORAGE TANK
SITE STORAGE
SHED
k
PERMIT D031-153322®
300,000 GPD -SITE LIMITED
TO 142,000 GPD DUE TO
POND SIZING.
\ / ` MONITORING WELL
I *�
r �
� MONITORING �
WELL 0,
t.
PERCOLATION
POND }
I
MONITORING WELLS
FENCE DOWN IN I .'
VARIOUS AREAS +'
(SUBSEQUENTLY
REPAIRED)
ES ENGINEERING -SCIENCE