ST0701-CS100106Pagel of 3
Keith Marvin - RE: Waste water stub outs
From: "Matt Oyen" <MattOgPacTrust.com>
To: "Farris, Miranda" <mharris @lhlacy.com >, "Farris, Kody" <kharris @lhlacy.com >,
"Rodriguez, Jorge" <jrodriguezghalff.com>
Date: 1/6/2010 12:57 PM
Subject: RE: Waste water stub outs
CC: <kmarvin @ci.coppell.tx.us >, "Littleton, Dave" <dlittleton @halff.com >, "Murawski, Ron"
<rmurawskiglhlacy.com >, "Richard Odell" <RODELLgci.coppell.tx.us>
Kody - per our conversation please proceed with this work effort on a time and materials basis. Once we have
the existing conditions information we will work with Halff to develop plans for the desired crossing locations for
the City's approval.
If you have any questions, or need any additional information please contact me.
Thanks,
Matthew Oyen, PE
Construction Manager
Pacific Realty Associates, L.P. (PacTrust)
15350 SW Sequoia Pkwy, Suite 300
Portland, OR 97224
Office: 503 624 -6300
Cell: 503 523 -7619
matto @pactrust.com
From: Harris, Miranda [mailto: mharris @lhlacy.com]
Sent: Tuesday, December 22, 2009 1:58 PM
To: Harris, Kody; Rodriguez, Jorge
Cc: kmarvin @ci.coppell.tx.us; Matt Oyen; Littleton, Dave; Murawski, Ron
Subject: RE: Waste water stub outs
reviewin �
After th original attached • • ; the cost of proposed i be $ Thi
inclu potholing and surveying the 3 locations i drawing
Pl ease i •
Miranda Harris
LH LACY COM
1880 Crown Rd.
Dallas TX 75234
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Page 2 of 3
Office: 214- 357 -0146
Fax: 214- 350 -0662
From: Harris, Kody
Sent: Monday, December 21, 2009 10:46 AM
To: Rodriguez, Jorge
Cc: kmarvin @ci.coppell.tx.us; matto @pactrust.com; Littleton, Dave; Murawski, Ron; Harris, Miranda
Subject: RE: Waste water stub outs
We are evaluating the cost impact to obtain the information requested. As soon as I have that information I will
send an estimate for your review.
Thanks,
KODYHARRIS
PROJECT MA NA CER
LM TA CY COMPANY
From: Rodriguez, Jorge [mailto:jrodriguez @halff.com]
Sent: Monday, December 21, 2009 10:40 AM
To: Harris, Kody
Cc: kmarvin @ci.coppell.tx.us; matto @pactrust.com; Littleton, Dave
Subject: RE: Waste water stub outs
!i J
When do y ou think we will receive the below re information. I'll be out next week, so please let me know
for further coordination.
Thanks
From: Rodriguez, Jorge
Sent: Wednesday, December 16, 2009 3:34 PM
To: 'kharris @lhlacy.com'
Cc: 'kmarvin @ci.coppell.tx.us'; 'matto @pactrust.com'; Littleton, Dave
Subject: Waste water stub outs
Kody
We were checking possible waste water stub outs locations and we are pretty tied at the existing 24" water
crossing locations. The attached sketch shows three possible stub out locations, but we need to verify the top
elevations of the existing 24 " water main at the clouded locations. We are giving approximate coordinate values
at these locations. We are trying to connect the stub outs to the proposed manholes. Please provide this
information as soon as you can to move forward on this issue.
Thanks very much
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Page 3 of 3
Jorge Rodriguez, P.E. MEN
Project Manager IBUE HALFF
HALFF ASSOCIATES, INC.
1201 N. Bowser Road
Richardson, Texas 75081
Phone 214 - 346 -6203
Fax 214 - 739 -0095
www.halff.com
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Page 1 of 1
Keith Marvin - Waste water Stub outs
From: "Rodriguez, Jorge" <jrodriguezghalff.com>
To: Matt Oyen <Matt0gPacTrust.com >, "Farris, Kody" <kharrisglhlacy.com>
Date: 1/6/2010 11:15 AM
Subject: Waste water Stub outs
CC: Keith Marvin <kmarvingci.coppell.tx.us >, "Littleton, Dave" <dlittletonghalff.com>
Attachments: ww stubouts.pdf; tceq requirements.pdf
Hi guys
The attached sketches shows all the crossing locations for stub out # 3 and # 1 . I strongly recommend both stub
outs to serve all the area for the property to the south. The most acceptable is alternative # 3 and we expect that
the top elevation should be 502.90 or lower as shown per plans. Alternative # 1 is pretty tie but is a good location
for an stub out to serve the property to the south. I also request to verify the flow line for the sanitary sewer
manholes at both locations. I also attach the TCEQ for crossing requirements. We must follow these requirements
for any of these crossings.
Please call me for any question
thanks
Jorge Rodriguez, P.E. MEN
Project Manager 1BUE HALFF
HALFF ASSOCIATES, INC.
1201 N. Bowser Road
Richardson, Texas 75081
Phone 214 - 346 -6203
Fax 214 - 739 -0095
www.halff.com
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Texas Administrative Code
Page 2 of 7
(1) The technical specifications for joints for gravity pipe must include the materials and methods
used in making joints.
(2) Materials used for gravity pipe joints must prevent infiltration and root entrance. A joint must:
(A) include rubber gaskets;
(B) include polyvinyl chloride (PVC) compression joints;
(C) include high density polyethylene compression joints
(D) be welded;
(E) be heat fused; or
(F) include other types of factory -made joints.
(3) The technical specifications must include ASTM, AWWA, ANSI, or other appropriate national
reference standards for the joints.
(d) Separation distances between public water supply pipes and wastewater collection system pipes or
manholes.
(1) Collection system pipes must be installed in trenches separate from public water supply trenches.
(2) Collection system pipes must be no closer than nine feet in any direction to a public water supply
line.
(3) If a nine -foot separation distance cannot be achieved, the following guidelines will apply.
(A) If a collection system parallels a public water supply pipe the following requirements apply.
(i) A collection system pipe must be constructed of cast iron, ductile iron, or PVC meeting ASTM
specifications with at least a 150 pounds per square inch (psi) pressure rating for both the pipe and
joints.
(ii) A vertical separation must be at least two feet between the outside diameters of the pipes.
(iii) A horizontal separation must be at least four feet between outside diameters of the pipes.
(iv) A collection system pipe must be below a public water supply pipe.
(B) If a collection system pipe crosses a public water supply pipe, the following requirements apply:
(i) If a collection system is constructed of iron, ductile iron or PVC with a minimum pressure
rating of 150 psi, the following requirements apply:
(I) A minimum separation distance is six inehs between outside diameters of the pipes.
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Texas Administrative Code Page 3 of 7
(II) A collection system pipe must be below dpublic water supply pipe.
(III) Collection system pipe joints must be located as far as possible from an intersection with a
public water supply line.
(ii) If a collection system pipe ciczss�es under a,publ�c �vater'supply pipe and the collection system
pipe is constructed of acrylonitrile butadiene styrene (ABS) truss pipe, similar semi -rigid plastic
composite pipe, clay pipe, or concrete pipe with gasketed joints, the following requirements apply:
(I) A minimum separation distance is two feet.
(II) If a collection system pipe is within nine feet of a public water supply pipe, the initial backfill
around the collection system pipe must be:
( -a -) sand stabilized with two or more 80 pound bags of cement per cubic yard of sand for any
section of collection system pipe within nine feet of a public water supply pipe.
( -b -) installed from one quarter of the diameter of the collection system pipe below the centerline
of the collection system pipe to one pipe diameter (but not less than 12 inches) above the top of the
collection system pipe.
(iii) If a collection system crosses over a puble tivater sipply:ppe, one of the following procedures
must be followed:
(1) Each portion of a collection system pipe within nine feet of a public water supply pipe must be
constructed of cast iron, ductile iron, or PVC pipe with at least a 150 psi pressure rating using
appropriate adapters.
(II) A collection system pipe must be encased in a joint of at least 150 psi pressure class pipe that
is:
( -a -) centered on the crossing;
(b -) sealed at both ends with cement grout or manufactured seal;
( -c -) at least 18 feet long;
( -d -) at least two nominal sizes larger than the wastewater collection pipe; and
( -e -) supported by spacers between the collection system pipe and the encasing pipe at a
maximum of five -foot intervals.
(4) Public water supply pipe and collection system manhole separation.
(A) Unless collection system manholes and the connecting collection system pipe are watertight, as
supported by leakage tests showing no leakage, they must be installed a minimum of nine feet of
horizontal clearance from an existing or proposed public water supply pipe.
(B) If a nine -foot separation distance cannot be achieved, the requirements in paragraph (3) of this
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