HomeMy WebLinkAbout1994 08 19 - Ltr to SJRWMD HydrologistCITY OF SEBASTIAN
1225 MAIN STREET
SEBASTIAN, FL 32958
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94 14: 1a uY� ��-
August 9, 1994 HAT #92-023.14
Mr. Rich Burklew, Hydrologist
Department of Resource Management
St. Johns River Water Management District
305 East Drive
Melbourne, FL 32904
Subject: Consumptive Use Permit Application -No. 2-061-0142AUNR2
City of Sebastian - Sebastian Highlands WTP
Response to Request of Additional Information
Dear Mr. Burklew:
The following is the response to your letter dated July 7, 1994, requesting additional
information to aid in the evaluation of the City of Sebastian's consumptive use permit (CUP)
application, No. 2-061-0142AUNR2_
We have reprinted the questions from your letter and provided the responses below each
question to assist you in your review of the City's permit application. We trust that the
information presented is sufficient for you to complete your review and recommend approval
of the City's permit.
Ctry of Seba an CUP ADDlication No 1-061-019AUN 22
. »...,....,1 TnfnY ntvm .
PART I - ADMINTSTRATIvE INFORMATION
1. Please submit an additional $600.00 to complete the will exceed cation processing fee of
0 gallons per day
$1000.00 since the requested average daily use
(see attached fee schedule). [(40C-1.603(1)]
Attached, please find a check in the amount of $600.00 to complete the application
processing fee of $1,000.00.
Mr. Rich Burklew
August 9, 1994
Page 2
PART II - TECM-1CAL INFORMATION
1. Based upon the amount of wastewater treated at the current level of potable water
use, wastewater flows will exceed 100,000 gallons per day within two years. Please
submit a detailed reuse feasibility study which includes a map of potential reuse
sites, the irrigated acreage of each site, and a proposed implementation schedule.
The potential use of reclaimed water at the municipal golf course should be
included in the study. [Paragraph 10.3(e)(f), A.H.]
Included in this package as Item A is an effluent disposal evaluation report prepared by
Engineering Sciences, Inc. for the former water utility owner General Development
Utilities. This report evaluates alternatives for meeting projected effluent disposal
requirements of the Sebastian Highlands WWTP through the year 2008. The potential
use of reclaimed water at the municipal golf course is included in this report_
2. Please revise Table 2, page PS4, based upon a more representative per capita
usage of 85 gpcd. In addition, please include the number of units and use a 6.5%
annual growth rate for the population served as indicated on page PS -1 in place of
the 15% to 22% growth rate initially submitted. [Paragraph 10.3(a), A.11.]
The City of Sebastian - Sebastian Highland WTP is currently serving 1518 units. This
is a service population of 42% of the total population, or approximately 4,860 people
out of an estimated city population of 11,570. It is the City of Sebastian's goal to
supply water service to at least 78% of the population (or 13,168 people out of a total
projected city population of 16,882) by the year 2000. As can be seen on Table 2A
included as Item B, the increase in the projected total city population is based on a
growth rate of 6.5%. The increase in the projected population served, however, is
based on the goal of the City to supply water service to 42% of the total population in
1994, 48% of the total population in 1995, and so on. The projected units served will
1v�- thus increase with the increase in the population served. It has been estimated that
10 G 0�� L a� there are currently 2 ple per unit. This number is expected to . decrease once
y u 3rr Y River Run and Reflections on the River are taken off the City of Sebastian's water
i system and begin water service with Indian River County by the end of this year (see
response No. 5).
It should be noted that with a change in per capita usage from 90 gpcd to 85 gpcd that
the requested total annual average daily and maximum daily flows for each year have
decreased 5.5%. This makes the average day and maximum day usage in the year
2000, 1.12 MG and 1.87 MG, respectively. Therefore, we request modification from
Mr. Rich Burklew
August 9, 1994
Page 3
what was originally requested for average day and maximum day flows to what is now
being submitted in Table 2.
3. The monthly operating reports for 1993 indicate that 135 million gallons were
pumped from the wells and 123 million gallons of treated water left the plant for
distribution. Please explain the water loss of 9%, propose appropriate corrective
action, and provide an implementation schedule. [Paragraph 10.3(a)(e), A.H.]
The water loss of 9% can mostly be accounted for through the backwashing of filters.
Plant records show that on average, approximately 10.0 MG of water is used annually
for backwashing of fi�ers
4. Staff agrees that the water audit should be addressed as a permit condition in this
case. Staff will propose a reduced permit duration of three years with the water
audit to be submitted two years after permit issuance. [Paragraph 10.3(a)(e),
A.H.]
Mr. Rich Votapka, manager of Sebastian's Water Utilities will schedule a water audit
with the Florida Rural Water Association. This will be conducted otiPark Place and
Palm Uak— are connected to the Sebastian Highlands System, probably sometime Ee�t
year: P i_ 4 C(e n.6.4c Kw P4 li 0,,,L.V s
5. Please propose an implementation schedule when River Run, Sebastian Ickes, and
Reflection's on the River will replace their master meters with cluster meters to
provide individual metering. [Paragraph 10.3(a)(e), A.H.]
6c c �!
It is antics ted by year's end that River Run and Reflections on the River will begin -
a. Indian River County and thus be taken off of the Sebastian
Highlands system. The County is currently
w a,., ckd R..Ft�dr
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S0.7Ff.,b..t l.. fr.wt-P•o;nJ�, � �,
An implementation schedule for the replacement of master meters wi cluster meters at
Sebastian Lakes is no longer being considered by the City of Sebastian. This
implementation was entered into a utility agreement between the City and Sebastian
Ickes, however, the agreement fell through. Sebastian Lakes has a master meter for
each of its eight buildings; each building has six units. To replace master meters with
cluster meters, each unit would have to undergo major and expensive plumbing
renovations.
6. When will the City implement a retrofit program for non=residential water use.
[Paragraph 10.3(a)(e), A.H.]
4{
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2
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dw�.lep.�-a..:Fi� �sj S�u.�..f c�,.�.�..�,�-. Ow.. i� Co� �.wi«r �+..:,� is �.,s l,.l.t..l , its. 41y
5/94 14:17 $407 839 3790 &1RMAUN ASSOC 2005/008
Mr. Rich Burklew
August 9, 1994 ✓�) I b, rti l
Page 4 d„) Ai)
Mr. Rich Votapka has been in contact with Mr. Mike Miller of the Water M2nagement
District regarding the District's assistance with the City of Sebastian in impiementing a
retrofit program for non-residential water use. Attached as Item C is a getter /to Mr.
Miller from Mr. Votapka re P�sr-j n�ersa8en-aad- theCty's interest in
meeting on the subject,
7. Please provide a schedule for the adoption of the following water conservation
related ordinances or an explanation of why it cannot be undertaken.
(a) Requiring the installation of ultra-low volume plumbing fixtures in all new
construction, such that plumbing fixtures are installed to comply with the
following maximum flow volumes at 80 PSI;
Toilets
1.6 gal/flush
Urinals
1.0 gal/flush
Shower heads
2S gal/min
Faucets (bathroom)
2.0 gal/mm
Faucets (ldtchen)
2.5 gal/min
(b) Prohibiting master meters on new service connections.
(c) Prohibiting wasteful use of water.
(d) Requiring the installation, where practical, of a dual piping system to
provide reclaimed water in new construction.
(e) Requiring water efficient (Xeriscape) landscape where economically
feasible.
Please be aware the District staff are available to assist in ordinance development. I6 (g54
[Paragraph 10.3(e), A.H.]
Mr. Rich Votapka with the City of Sebastian has been in contact w,
Mr. Mike Miller
from your office regarding the District's assistance in develop en of the water
conservation ordinance listed above. Attached as Item C is a letter o lair. Miller from
Mr. Votapla the City of Sebastian's interest in
b
-Adop
gen-afthesewater conservation measures- O -A^:° wil-+, Ass"i+� *
P A - a
8. The aquifer hydraulic parameters used appear to be outside the range typical for
this area. Please justify the use of these parameters. Please run the model again
using a pumping rate based upon the additional water requested over current
water use and an additional run of 90 days at the maximum daily pumping rate.
15/94 14:17 $407 839 3790 HARTMAN ASSOC Z006/008
Mr. Rich Burklew
August 9, 1994
Page 5
Please provide a diskette with a copy of the MODFLOW input and output files as
well as the version of MODFLOW used to run the simulations. [Paragraph
10.3(c)(d), A.H.]
As we have previously discussed via telephone, the aquifer paramenters used in
drawdown impact model submitted with the permit application were obtained from the
report `Drilling and Testing for Public Water Supply from the Shallow Aquifer"
prepared by Geraghty & Miller, Inc. in 1981. This test area consisted of the Sebastian
Highlands WTP and surrounding area. Therefore, aquifer parameters used in the
model were obtained from site specific testing conducted by Geraghty & Miller, Inc.
A copy of this report was forwarded to you in mid-July.
Attached as Item D is a drawdown impact model simulating a pumping rate based upon
the additional water requested over the current use and a model simulating 90 days of
pumping at the requested maximum daily pumping rate of 1.87 MG. Also included as
Item D is a diskette with a copy of the MODFLOW input and output files as well as the
version of MODFLOW used to run the three (3) simulations.
9. Please provide the water level and water quality information requested in
conditions 18, 19, and 20 of the existing permit. If the previous water system
owner's records are missing or incomplete, please collect and analyze water
quality samples and record water levels as specified in the above referenced
conditions. The information should be included with the next submittal along
with a monitor well location map. [Paragraph 10.3(d)(h), A.H.]
Attached as Item E, please find the water level and water quality information requested
in conditions 18, 19, and 20 of the existing permit. Information pertaining to condition
18 is weekly data dating from July 1993 to June 1994. Information pertaining to
condition 19b, 19c and 20a is monthly data dating from July 1993 to June 1994.
Information pertaining to condition 20b is quarterly data dating from January 1993 to
June 1994.
Also included as Item E is a map showing Sebastian Highland WTP production well
and monitor well locations.
1S/94 14:18 $407 899 3790 RARTMAN ASSOC 00007/008
Mr. Rich Burklew
August 9, 1994
Page 6
Thank you for your time and assistance throughout this permitting process. If you have any
questions, please contact either me or Bruce Iafrenz at (407) 839-3955.
Very truly yours,
Hartman & Associates, Inc.
William J. Wasson
Hydrogeologist
WJ W /ns /C-1 /burkl. wjw
cc: Rich Votapka, P.E., City of Sebastian
Hal Schmidt, P.E., HAI
Gary ReVoir, P.E., HAI
Bruce iafrenz, P.G., HAI
Steve Rapp, HAI
Neil Klaproth, HAI
TABLE 2A
PROJECTED WATER USE
SUPPLEMENTAL TO TABLE 2
-Z'41
m
NRI�
ER
Irl.N1.5
....... �(O�g vg.
2,
1994
11570
4859
42
i 1518
85
0.413
0.690
1.728
1995
12322
5915
48
2250
85
0.503
0.840
1,728
1996
13123
7086
54
2725
85
0.602
1.01
1.728
1997
13976
8386
60
3225
85
0.713
1.19
1.729
1998
14884
9823
66
3778
85
0.835
1.39
1-728
1999
15852
---11413
72
4389
85
0.970
1.62
1.728
2000
16882
1 L3169
78
5064
85
1.12
1 1.87
1.728
WIW/m/C-1/burld.v, w 081094
HAI #92-023.14