DDW-2024-014413

Andrew Palmer, P.E.
BLM Green River District
170 S 500 E
Vernal, UT 84078
April 18, 2014
Scott D. Hacking, P.E.
DEQ District Engineer
Uintah Basin District
28 1 East 200 North
Roosevelt, UT 84066
Dear Mr. Hacking:
This purpose of this letter is to request after the fact approval for improvements to the
water system at the Indian Crossing Campground. During March and April of 20 11,
improvements were made to the transient water system that services the BLM operated
Indian Springs Campground located in the Browns Park area of Daggett County. These
improvements included the following:
1. Installation of a 5,000 gallon storage tank located above the campground that
would provide sufficient gravity fed water to maintain service at the campground
for several days in the event of a prolonged power outage or other interruption to
water supplied from the existing well.
2. Replace the existing submersible pump with a pump capable of supplying
approximately 25 gpm directly to the tank from the well.
3. Install approximately 2500 feet of 1 Yi inch HDPE water line from the existing
well to the new water storage tank.
4. Install approximately 1965 feet of 2 inch HDPE water line to distribute water
from the new water tank to the campground.
5. Install approximately 625 feet of 1 Yi inch HDPE water line laterals to water
spigots located near the horse corrals and the vault toilets that are associated with
the campground.
6. Install water level sensors in the new water tank connected to the pump control
box via buried electrical cable.
These improvements were made by BLM personnel under my supervision. The location
of the The water lines were installed a minimum of 4 feet below grade to allow year
round use of the water system.
, . Mr. Scott D. Hacking, P.E.
April 18, 2014
Page 2
BLM personnel have recently added an overflow line to the tank. The overflow line
consists of a 3 inch Schedule 40 PVC pipe extending from the tank a distance of 80 feet
with a minimum slope of 4 percent. The pipe was fitted with a screened elbow that
discharges any potential overflow from a height of at least 12 inches above the adjacent
ground level.
I am submitting herewith the following:
• Summary drawings of the water system and the new storage tank.
• Photographs of the improvements made to the system including addition of the
overflow line.
• Bacteriological test results from an investigative sample taken immediately after
disinfection and initial filling of the tank and a routine sample taken shortly
thereafter. It should be noted that we have had no positive results from
bacteriological testing since the tank was installed.
It is my opinion that the improvements made to the system were completed using
appropriate care and construction practices and that the improvements are in general
accordance with Utah Administrative Code, Rule Series 500, Drinking Water Facility,
Construction, Design, and Operation. We would respectfully request an exception to the
requirement that a tank drain be installed near the tank due to it's location at the top of a
hill. When drainage of the tank is required, we will drain it through the system to
locations on flatter ground where discharge will not result in excessive erosion.
If any additional information is required, please contact me at ( 435) 790-0585. Thank you
for your consideration in this matter.
Sincerely,
Andrew Palmer. P .E.
Civil Engineer
'.
Indian Crossin,g Campground
Water System Improvements
April 2011
SUMMARY DRAWINGS
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Pro;ect Summary
A 5000 go/Ion water storage tonk
was installed to provide on adequate
water supply in the event of o
power outage. The tonk consists of[
on B' diameter by 17'8" long
fiberglass tonk and is used to store
potable water for the Indian Crossing
campground.
The tonk is filled with water pumped
through a 1 M inch HOPE pipe
directly from the existing well in the
campground. The submersible pump
in the well was replaced to provide � 25 gpm rote of flow to the tank. a:
Float switches to control the pump � were installed in the tonk. A control �� coble was installed in the waterline ,_� trench to electronically connect the D �i
float switches to the pump control �o
module located in the concrete vault s� adjacent to the well. ��
Water discharged from the tank to
the campground system is fed by
gravity through a 2 inch HOPE water
line to the campground and boot
romp areas and distributed through
the existing water lines. Additional
laterals with spigots were installed
near the vault toilets in the northern
portion of the campground and near
the horse corrals.
Trenches for the waterlines and
laterals were excavated to o
minimum depth of 4 feet below
existing grade to provide frost
protection.
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NOTES:
1. A 5000 gallon water storage tank
was installed to provide on
adequate water supply in the
event of a power outage. The
tonk consists of on 8' diameter
by 17'8" long fiber gloss tank ond
is used to store potable. water
for the Indian Crossing
campground.
2. The tonk is filled with water
pumped through a 1 M inch HOPE
pipe directly from the existing
well in the _campground. The
submersible pump in the well was
replaced to provide approximately 25 gpm flow rote with 200 feet
of head.
J. Float switches to control the
pump were installed in the tank. A control coble was Installed in
the waterline trench to
electronically connect the float
switches to the pump control
module located in the concrete
vault adjacent to the well.
2 3
5. 000 c.u.LON .l'IBERCMSS 1'.Al'ER 1'.ANK
4. Water discharged from the tank
to the campground system iS fed
by gravity through a 2 inch HOPE
water line to the campground and
boat romp areas and distributed
through the existing water lines.
Additional laterals with spigots
were installed near the vault
toilets in the northern portion of
the campground and near the
horse corrals.
5. J inch PVC tonk overflow was
installed on 4/17/2014. The
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A'NOEO PYC PIPE
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overflow line extends 80 feet from
the tonk with a minimum slope
of 4 percent and hos a screened
discharge at least 12 inches
above the ground.
Due to the high potential for
excessive erosion, a drain was
not installed adjacent to the
storage tank. Drainage of the
tonk will be facilitated using the
water spigots located at the
corrals and campground where
the water can be dispersed with
less impact.
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2 SHEIT 1 OF 1
Indian Crossing Campground
Water System Improvements
April 2011
SELECTED PHOTOGRAPHS
Photo 1-Setting Tank in Excavation.
Photo 2 -Installation of manway extension with gasket.
Photo 3 -Tank with appurtenances attached ready for backfill
Photo 4 -Tank with pea gravel bedding shown
Photo 5 - Placement of pea gravel backfill
Photo 6 -Tank with pea gravel backfill to spring line.
Photo 7 -Typical trench with minimum 4Yz' depth.
Photo 8 -Typical trench with pipes and control cable partially placed
Photo 9 -Trench backfill operation with initial bedding by hand to avoid crushing pipe
Photo 10 -Partially backfilled trench with metallic tracer ribbon
Photo 11-Two inch distribution line tied in to existing water line
Photo 12 -One and a half inch supply line tied into vault at well location with well casing exposed
Photo 13 -Pump control sensors installed within vented casing
Photo 14 -Completed tank installation
Photo 15 -Overflow line extending from storage tank
Photo 16 -Overflow discharge
Indian Crossin,g Campground
Water System Improvements
April 2011
BACTERIOLOGICAL TEST RES UL TS
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TriCounty Health Department En"ironmental Lab
1335. SOO E.
Vernal, UT 8407S
(435} 247-1162
David Eaton
Water System Name/Number: Indian Crossing #05040
Lab Number: 110610
Sampling Point: #1
Collected By: Tim Sweeney
Collection Date/Time: 6·7-2011@1210
Analysis: Colilert-18
Sample Type: Routine
Results:
Details/Comments:
Reporting Information:
BLM
Tim Sweeney
170 S. 500 E.
Vernal, UT 84078
Satisfactory
Date/rime R�ceived: 6-7-2011@>1430
Sample Temperature: 5.9 C
Date/Time A11alyzed; 6-7·2011@l639
Water Type: Public Water System
On Ice; Yes
Total Collforms per 100ml-Absent
Fetal Collforms per 100mL-Absent
Total Collforms:
Fecal Coliforms (e.coli)
<1
<1
MPlll/tOOmL
MPN/lOOmL
)
TriCounty Health Department Environmental lab
1335.SOOE.
Vernal, LIT 84078
(435) 247·1162
David Eaton
Water System Name/Number: Indian Crossing #05040
Lab Number: 110555
Sarnpling Point: #1
Collected By: Jerry Mobley
Colleetion Date/Time: 5-i6-20:l1@1230
Analysis: Colilert-18
5ample Type: Private Investigative
Results:
Detalls/Comments:
Repo11in1 Information:
BLM
TlmSweertey
1705. 500 E.
Vernal, UT 84078
Satisfactory
Oatemme Received: 5-26-2011@1448
Sample Temperature: 3.4 C
Date/Time Analy1.ed: S-�6-2011@1644
Water Type: Public Water System
On Ice: Yes
Total Coliforms per 100ml-Absent
fecal Coliforms per 100mL-Absent
Total Collforms:
Fecal Coliforms (e.coliJ
<1
<1
MPN/100mL
MPN/100mL