Title: DER's New G-1 Rule, Size of propsed zones of protection altered by changing a variable
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Permanent Link: http://ufdc.ufl.edu/WL00000661/00001
 Material Information
Title: DER's New G-1 Rule, Size of propsed zones of protection altered by changing a variable
Physical Description: Photograph
Language: English
 Subjects
Spatial Coverage: North America -- United States of America -- Florida
 Notes
Abstract: DER's New G-1 Rule, Size of propsed zones of protection altered by changing a variable
General Note: Box 7, Folder 1 ( Vail Conference 1987 - 1987 ), Item 54
Funding: Digitized by the Legal Technology Institute in the Levin College of Law at the University of Florida.
 Record Information
Bibliographic ID: WL00000661
Volume ID: VID00001
Source Institution: Levin College of Law, University of Florida
Holding Location: Levin College of Law, University of Florida
Rights Management: All rights reserved by the source institution and holding location.

Full Text





Calculating the horizontal travel time for a single well also is
relatively straight forward if the values given for the variables
are not questioned or changed.

Changing the value for porosity will substantially alter the
extent of the outer zone of protection, as will changes in the
quantities of water permitted for average daily flow or changes
in the distance from the top of the producing aquifer to the
bottom of the hole.

The following sketches and computer printouts illustrate how the
size of the proposed zones of protection may be altered by
changing any one of these three variables.



Well head

at ,e >^ -Inner zone of protection 200'r.
SOuter zone of protection






... Top of producing aquifer







SBottom of hole


Deeper well


L.07


Shallower well
























1 1 I I 1 I


, a ~I I


(RETURN>
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hard copy.


2. 0
H
Tn
n
r
A


3,000,000 gpd-1
500 ft
1825 days
.05
3053 ft .58 miles
1.05 mi 672 acres


Moving front
8 to
1825
Days
PRT#= 368




(RETURN> /
for next
screen.
PrtSc for
hard copy.

3. 0 = 3,000,000 gpd
H 500 ft
T 1825 days
n .25
r 1365 ft, .26 miles
A .21 mi*, 134 acres

w/,o


MovIng ftr<
8 to
1825
Da s
PRT#= 360


../- '-,


I I I I I I I


* I II I hII i












i a 0, I


i I I I I








Joe=


w



_





(RETURN)
for next
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hard copy.
1. 0 = 1,000,000 gpd
H 500 ft
T 1825 days
n .05
r : 1763 ft. .33 miles
A =.34 miL, 218 acres

Moving Irom
8 to 3
Days1825

PRT#= 360 I
WOOLRAM


* 0


-7C/i^M


IAA-A-
\^JA^^


~C~ij


yZltC~h~








1* 1 I 1
















9 9 9 9 9 p


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5. 0 3,000,000 gpd
H a 250 ft
T = 1825 days
n = .05
r 4317 ft, .82 miles
A = 2.1 mit, 1344 acres


i i i


I I i i i I


















.i/ 0' t1


I1 I


Moving
8 to
1825
Days


PRTH= 368





for next
screen.
PrtSc for
hard copy.


6. 0 a 1,000,000 gpd-I
N 250 ft
T 1825 days
n .25
r 1115 ft, .21 miles
A .14 mil, 90 acres
V.9I


Moving from
8 to
1825
Days
PRT*= 368





(RETURN>
for next
screen.
PrtSc for
hard copy.

4. Q 3,000,000 gpd
H = 250 ft
T = 1825 days
n = .25
r 1931 ft, .37 miles
A .42 mi*, 269 acres

Moving from
8 to
1825
Days
PRT#= 360


1 1 1 1


i1 1 1


_ -- -- 1


/^^^^
d '1'0
wV/


1 1 1


from







When the zones of protection of well heads overlap, as they do in
clustered wellfield areas, the boundary of the 5 year travel time
zone of protection is not clear. A clustered wellfield may be
permitted by a Water Management District to pump an average daily
amount from its wellfield, and each well within that wellfield
may also be permitted to pump an average daily amount.
If the amount of water permitted to be withdrawn from each well
in the wellfield were totaled, this total might exceed the
average daily permitted withdrawal amount of the wellfield. This
is because within these clustered wellfields there may be a
number of wells that are not used every day or are not pumping
their permitted daily average amount since pumpage is rotated
and/or dispersed around the wellfield.
An example of this would be a clustered wellfield that is
permitted to withdraw 54,000,000 gallons per day. There may be
50 wells within the wellfield boundaries, but withdrawals are
rotated around the wellfield and only 18 of these wells are used
at any one time. If each of these wells is permitted an average
daily withdrawal rate of 3,000,000 gallons per day ("0" as
defined by 3.403(8)(a)) and has a 500 foot production zone ("h"
as defined by 3.403(8)(a)), then the five year travel time zone
of protection may be determined several different ways.
For example --
1. If the zone of protection around this clustered
wellfield is calculated as if the wellfield were one large well:
-
5foo000,000 ?&t 125 @4,44 ( 0" A


S1(2. 64,46)"1




2. If the zone of protection is calculated using the
average daily withdrawal rate permitted by the WMD for each well
and the average number of wells that would be used to pump the
average daily withdrawal rate permitted for the clustered
wellfield:

3,000.0000_ I _O =0 56 ^
d a j4 7s.4o. .05 /\5w() '


Sf, (o.sIau I /i t 8 44Ou6.,
uA I Oi X


4.10








3. If the zone of protection is calculated using the
total number of wells in the wellfield and the average permitted
withdrawal rate of each well to calculate a total area to be
protected:


3.flL (ow&#e ow J 9Oa4-3
= 3,80/ a


The rule states that "mapping priorities shall follow the
Commission directive of February 27, 1985". This directive
prescribes the middle Gulf region of Florida (parts of Pinellas,
Hillsborough, Pasco, Hernando and Citrus Counties). Although any
substantially affected person or water management district may
seek reclassification by filing a petition, the procedure
prescribed requires mapping and delineation by the department as
time and resources allow.













SD1G1ZOP.MEM


L,11










Note:


The following pages contain a draft of the new rules. This is
the latest draft available and is not in the final form as
adopted. Sorry, but we could not obtain an exact copy before
assembling this book.

New material is underlined. Deleted material is -see-te>g.


17-3.021
17-3.403
17-3.404
17-4.245


Definitions
Classification of Groundwater
Standards
Installations Discharging
to Groundwater


LJa


Page
4.13
4.16
4.25

4.245




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