Vista Point II-CS041118II I~ ff~ 'IHI 18:36 I'\\ 214 361 ~573 ~J\I3, F ASF, OC [NC [~]001
'=' Halff Associates, Inc
ENGINEERS ARCHITECTS SCIENTISTS PLANNERS SURVEYORS
8816 Northwest Plaza Drive
Daltas. Texas 75225-4292
(214) 346-6200
Fax (214) 361-5573
FAX TRANSMITTAL
TO: Mr. Keith Marvin, P.E. DATE:
Mr. Christopher Gardner
B. David Littleton, P.E.
Ernail: dlittleton @ halff .com
FAX #:
FROM:
November 18, 2004
AVO: 22223
'-628-7444 PROJECT: Vista Point II
# OF PAGES 9 (including cover sheet)
[] URGENT
[~PLEASE REPLY
[]FOR REVIEW
COPY TO FOLLOW BY MAIL:
[] YES [] NO
ITEMS SENT:
Sketchesfrom Engineering Plans
COMMENTS:
Keith, I received your letter regarding the stamped pavers. I missed these (oops!) and will add information to the
paving plan reflecting this condition. The attached sketches indicate some additional modifications to the plans
we propose. Upon your review and concurrence, these modifications will be added to the plans and the revised
sheets witl be sent to you. Sheets labeled 1 thru 6 indicate modifications to the bedding material for the HDPE
pipe. Sheet 7 indicates a proposed modification to the drainage plan (we will reduce tt~e infer size to 3-grate and
pick up Phase 1 water only. Phase 2 will require construction of an additional inlet). Sheet 8 shows the limits of
pavement removal proposed by CalHar (utility contractor) to install the 5-foot diameter sanitary manhole (this ts
apparently due to the close proximity of the existing sewer line to the curb line, the depth of cut and the size of the
manhole), in light of the required pavement removal required for manhole construction, we request modifying the
sanitary sewer street crossing to allow open cut, Please let me know if the enclosed modifications are acceptable
and we will update our plans,
SIGNED: B. David Littleton, P.E.
NOTE: The comments on and ar. achmenl to this cover sheet are intended only for the use of the individual or entity to which it is
addressed, and may contsin information that is privileged, confidential, and exempt from disclosure under applicsble law. It the reader
of this message is not the intended recipient or the employee or agent responsible for delivering the message to the intended recipient,
you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. I¢ you have received
this communication in error, please notify us immediately by telephone and return the original to us, at the above address, via the U S.
Postal Service. Thank you.
II 18/04 'l[l/ 18:36 [:\X 214 361 5573 [t,\IFF \SSOC [NC [~002
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0 20 40 60 90 120
SCALE IN FEET
1'=60'
180
(--TYPE= MANUFACTURED, PROCESSED
~,, AGGREGATEaS] DENSE GRADED. CLEAN.
DESCRIPTION. ANGULAR. CRUSHED STONE.
PERCENT PASSING SIEVE SIZES=
1.5-1NCH-IOOY.
No. 4- < 50X
No. 200--< 5Z
INSTALL AND COMPACT IN 6-INCH MAXIMUM
LAYERS. WORK IN AROUND PJPE BY HAND
TO PROVIDE UNIFORM SUPPORT.
SKING
~LOCK)
N-12 WT lB
HDPE PIPE %
~-'i~ CEMENT SAND
BACKFILL --
Bc
Bd
4' MIN.
EMBEDMENT
HDPE PIPE
N.T.S.
1. Bc = OUTSIDE DIAMETER OF PIPE
Z. Bcl = TRENCH WIDTH
,,T 'C-4'
~I'E INLET
i'A. 5+29.00 LINE 'C'
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455'
445'
440
HDPE ON 0.50% 0
DIA= 18'
Q= ~5'~'0~ al:s
S= 0.23X
11/18/04
'~' D~SIG~' FLOW Q~ =286.5 I
~ (PER BANNENBAUM PLAN)
PROPOSED FLOW Qmo=230.7
(PER F)
42' HDP
BOX
Z
11 18/04 '1111 18:43 t,'AX 214 361 5573
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