HomeMy WebLinkAbout2008-06-05 - Planning-Engineering-Operations Committee Meeting Agenda PacketEL
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• YORBA LINDA WATER DISTRICT
PLANNING-ENGINEERING-OPERATIONS COMMITTEE MEETING
Thursday, June 5, 2008,4:00 p.m.
1717 E. Miraloma Avenue, Placentia - Tel: (714) 701-3020
COMMITTEE:
Director William R. Mills, Chair
Director Paul R. Armstrong
AGENDA
STAFF:
Michael A. Payne, General Manager
Ken Vecchiarelli, Asst. General Manager
Lee Cory, Operations Manager
John DeCriscio, Chief Plant Operator
Ken Mendum, Operations Superintendent
INTRODUCTION OF VISITORS AND PUBLIC COMMENTS
Any individual wishing to address the Committee is requested to identify themselves and state the matter on which
they wish to comment. If the matter is on this agenda, the Committee Chair will recognize the individual for their
comment when the item is considered. No action will be taken on matters not listed on this agenda. Comments are
limited to matters of public interest and matters within the jurisdiction of the Water District. Comments are limited to
five minutes.
DISCUSSION ITEMS:
This portion of the agenda is for matters such as technical presentations, drafts of proposed policies, or similar items
• for which staff is seeking the advice and counsel of the Committee Members. This portion of the agenda may also
include items for information only.
1. Preventative Maintenance Program Status Report.
2. Status Report on the Meter Replacement and Radio Read Retrofit Project.
3. Monthly Water Production and Purchased Imports through May 2008.
4. Monthly Orange County Groundwater Producers Meetings. Impacts of the BPP
and BEA settings and MWD call on Water Stored under Long Term Storage
Program.
5. Monthly MWDOC Managers Meeting Summary Report.
6. Draft Irrigation Feasibility Study.
7. Action Items from Orange County Grand Jury Report.
8. Cielo Vista Project Technical Memorandum 1 Conceptual Plan.
9. Status Report on Capital Improvement Projects in Progress.
ACTION ITEMS:
This portion of the agenda is for items where staff presentations and committee discussions are needed prior to
formal committee actions.
fa 10. Consider Amendment to Professional Services Agreements for the Highland
Reservoir Replacement Project.
Recommendation: Review, discuss and consider staff recommendations for
design of the Highland Reservoir Project, Job No. 200309.
11. Consider Soliciting Proposals for Well Siting, Drilling and Testing of Groundwater
Replacement Wells 20 & 21.
Recommendation: Review, discuss and consider staff recommendations to solicit
proposals for groundwater well replacement projects, Job No. 200711.
ADJOURNMENT:
The next regularly scheduled Planning-Engineering-Operations Committee will be held
July 3, 2008 at 4:00 p.m.
Accommodations for the Disabled:
Any person may make a request for a disability-related modification or accommodation needed for that person to be
able to participate in the public meeting by telephoning Michael A. Payne, District Secretary, at 714-777-3018, or
writing to Yorba Linda Water District, P.O. Box 309, Yorba Linda, CA 92885-0309. Requests must specify the nature
of the disability and the type of accommodation requested. A telephone number or other contact information should
be included so the District staff may discuss appropriate arrangements. Persons requesting a disability-related
accommodation should make the request with adequate time before the meeting for the District to provide the
requested accommodation.
is
•
_2_
ITEM
PM PROGRAM
2007/2008
Fiscal 2007/08 JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN
Percent of target 8% 1 17% 1 25% 1 33% 1 42% 1 50% 1 58% 1 67% 1 75% 1 83% 1 100%
HYDRANTS (3,765) Target; all hydrants to be serviced annually.
INSPECTED THIS MONTH 175
5271
4661
65 323
346
530
468
465
342
317
INSPECTED THIS YEAR 175
7021
1,168
1,233 1,556
1,902
2,432
2,900
3,3651
3,707
4,024
% OF TOTAL 4.7%
18.7%1
31.0%1
32.8% 41.3%
50.5%
64.6%
77%
89%
99%
107%
VALVES (10,00012= 5,000) Target; all valves to be operated every two years
OPERATED THIS MONTH
152
466
567
631
678 410
3931
4181
393
1 3081
457
OPERATED THIS YEAR
152
618
1,185
1,816
2,817 3,227
3,620
4,038
1 4,431
1 4,739
1 5,196
% OF TOTAL
3.0%
12.4%
24.0%
36.3%
56.3% 64.5%
72.4%1
80.8%
89%
95%1
DEAD ENDS (487x2 =974) Target; all dead ends to be flushed twice each year.
FLUSHED THIS MONTH
0
0
0
487
0 0
0
---01
01
4871
0
FLUSHED THIS YEAR
0
0
0
487
0 0
0
0
0
974
974
% OF TOTAL
0.0%
0.0%
0%
50%
50% 50%
50%
50%
50%
100%
"
AIR VACS (309) Target; all air /vacs to be serviced annually.
INSPECTED THIS MONTH 39
331
51
2 57
261
371
181
391
821
110
INSPECTED THIS YEAR 39
721
771
79 136
1621
1991
2171
256
338
448
% OF TOTAL 12.6%
23.3%1
25.0%1
25.6% 44.0%
52.4%1
64.4%1
70.2%
83%1
109.0%
-
SEWER CLEANING (802,560) Target; all sewers to be cleaned annually.
CLEANED THIS MONTH
52,826
68,5231
54,8061
84,092
80,969
73,2841
44,3671
48,7161
90,4131
82,721
1 74,301
CLEANED THIS YEAR
52,826
121,349
176,155
260,247
341,216
414,500
458,867
507,573
597,986
680,707
1 755,008
% OF TOTAL
6.6%
15.1%1
22.0%1
32.4%
43%
51.7%1
57.2%1
63.20%
75%
85%1
1
i8 lG (160,512) Target; all sewers to be televised every 5 years.
ED THIS MONTH 0
gOF
7,740
7;759
7,280 2,648
4,655
1,727
700
1,261
0
3,414
ED THIS YEAR 0
7,740
15,449
22,773 25,427
30,082
31,809
32,509
33,7711
33,770
37,184
TA L 0
4.8%
10%
14.2 °l0 15.8 °l0
1$.7°!0
19.8°!°
20.30%
21 °/a
21
ITEM #
PM PROGRAM
2007/2008
METER REPLACEMENT PROGRAM
WEST SIDE
FEB
MAR
APR
MAY
JUN
JULY
Percent of target
774%61
28%
43%
57%
86%
100%
REPLACED THIS MONTH
REPLACED THIS YEAR
108
217
281
353
% OF TOTAL
22%
43%
56%
7;tl7
JAN
FEB
MAR
APR
MAY
JUN
JULY
Percent of target
14%
28%
43%
57%
86%
100%
REPLACED THIS MONTH
11
13
21
53
31
REPLACED THIS YEAR
11
24
45
98
129
% OF TOTAL
7%
15%
28%1
61.0%
JAN
FEB
MAR
APR
MAY
JUN
JULY
14%
28%
43%
57%
72%
86%
100%
REPLACED THIS MONTH
3211
1 6731
0
REPLACED THIS YEAR
3211
994
9941
1
% OF TOTAL
15%
45%
b`
EAST SIDE
TO BE COMPLETED BY JUNE 30th 2009
2008
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
Percent of target
6%
11%
17%
22%
28%
33%
38%
44%
50%
56%
61%
67%
REPLACEMENT PROG. (2500)
REPLACED THIS MONTH
57
11
721
271
11
REPLACED THIS YEAR
57
581
130
1571
1681
1
% OF TOTAL
2%
2%
5%
6%1
7`,<
2009
JAN
MAY
JUN
FEB
MAR
APR
Percent of target
72%
78%
83%
88%
94%
100%
REPLACED THIS MONTH
REPLACED THIS YEAR
% OF TOTAL
WESTERN SERVICE AREA
METER REPLACEMENT PROGRAM
SKIPS
WEEKLY AVE.
NEEDED TO REACH
TARGET
RETROS
Commercial.
WEEKLY AVE.
NEEDED TO REACH
TARGET
RETROS
Residential.
WEEKLY AVE.
NEEDED TO REACH
TARGET
WEEKS LEFT
TO TARGET
WEEK
ENDING
DONE
TO DO
DONE
TO DO
DONE
TO DO
502 1611
2210
26
1 -Feb
3
499
1"
0
161
6
25
8 -Feb
24
475
1t1
0
161
6
24
15 -Feb
17
458
19
0
161
7
23
22 -Feb
18
440
19
1
160
7
22
29 -Feb
26
414
19
4
156
7
21
7 -Mar
28
386
18
3
153
7
20
14 -Mar
22
364
18
7
146
7
19
21 -Mar
27
337
18
6
140
7
18
28 -Mar
29
308
17
1
139
8
321
1889
105
17
4 -Apr
6
302
18
25
114
7
71
1818
107
16
11 -Apr
18
284
18
13
101
6
130
1688
106
15
18 -Apr
13
271
18
9
92
6
438
1250
83
14
25 -Apr
21
250
18
2
90
6
34
1216
87
13
2 -May
13
237
18
6
84
6
16
1200
92
12
9 -May
16
221
18
5
79
7
0
1200
100
11
16 -May
22
199
18
9
70
6
0
1200
109
10
23 -May
35
164
16
4
66
7
0
1200
120
9
30 -May
15
149
17
13
53
6
0
1200
133
8
6 -Jun
0
7
13-Jun
0
6
20-Jun
0
5
27-Jun
0
4
4-Jul
r
3
11-Jul
0
2
18-Jul
0
1
25 -Jul
0
1 -Aug
#DIV /0!
#DIV /0!
YLWD SOURCE WATER SUMMARY ITEM NO. 3
Fiscal Year 2007-08
TOTAL
GW
IMPORT
DEMAND
MONTH
(AF)
(AF)
(AF)
Jul-07
1,383.5
1,497.2
2,880.7
Aug-07
1,525.0
1,382.8
2,907.8
Sep-07
1,373.4
1,177.2
2,550.6
Oct-07
1,315.9 1
959.1
2,275.0
Nov-07
1,118.0
740.4 1
1,858.41
Dec-07
777.2
471.9 1
1,249.1 1
Jan-08
707.7
421.4 1
1,129.1 1
Feb-08
561.8
527.6
1,089.4
Mar-08
860.7
942.2
1,802.9
Apr-08
1,166.5
950.0
2,116.5
May-08
1,325.0
998.5
2,323.5
Jun-08
FYTD
12,114.7
10,068.3
22,183.0 1
Allowable
GW (YTD)
13,378.65
Underpumped (AF)
1,264.0
Operating Cost Affect $
189,600
Operating Cost Affect $
252,800
MONTHLY
YTD
BUDGET
GW
GW (Demand Est.)
DELTA
(AF)
48.0%
48.0%
2,843.0 1.3%
52.4%
50.2%
2,797.0
4.0%
53.8%
51.3%
2,454.0
3.9%
57.8%
52.7%
2,070.0
9.9%
60.2%
53.8%
1,635.01
13.7%
62.2% 1
54.6% 1
1,471.01
-15.1%
62.7% 1
55.2% 1
1,283.01
-12.0%
51.6%
55.0%
1,228.01
-11.3%
47.7%
54.2%
1,454.01
24.0%
55.1%
54.3%
1,819.01
16.4%
57.0%
54.6%
2,406.0
-3.4%
2,696.0
(AF)
(AF)
(At $150/AF Delta)
(At $200/AF Delta)
GROUNDWATER PERCENTAGE
70.0%
65.0%
60.0%
55.0%
50.0%
45.0%
40.0% ,
Jul-07 Aug- Sep- Oct- Nov- Dec- Jan- Feb- Mar- Apr- May-
07 07 07 07 07 08 08 08 08 08
Month
MONTHLY GW
-~-YTD GW
BPP GOAL 60.2%
3,500
3,000
2,500
2,000
L
V
a 1,500
1,000
L4II11
0
Monthly Water Demand by Source
101 01 01 X01 ro 1 01 1 0 1 0 1 1 0 1 0 1
JO�O o0�0 �O�,O GOGO O O O O Z0 0 0
Month
ITEM NO. /O
AGENDA REPORT
Committee Meeting Date: June 5, 2008
To: Planning-Engineering-Operations Committee
From: Michael A. Payne, General Manager
Staff Contact: Ken Vecchiarelli, Assistant General Manager
Leon de los Reyes, Water Quality Engineer
Reviewed by General Counsel: No Budgeted: Yes Total Budget: $ 11.2M
Funding Source: Water Revenue Bond
CEQA Account No: 102-2700 Job No: 200309
Compliance: Mitigated Neg. Dec. Estimated Costs: $ 68,500 Dept: Eng
Subject: Professional Services Agreement Amendment for Engineering Design - Highland
Reservoir Replacement Project
SUMMARY:
On January 12, 2006, the District entered into a Professional Services Agreement (PSA) with
Carollo Engineers in the amount of $284,873 for the Highland Reservoir Replacement Project
design and bidding support services. On September 28, 2006 the District awarded a PSA to
Tetra Tech for $66,365 and approved an amendment of $18,600 to the PSA with Carollo
Engineers for a value engineering study for the project design. Carollo completed the plans and
specifications for the project and the District received competitive bids for construction on
January 24, 2008. The Board of Directors awarded a construction contract in the amount of
$9,049,364 to Schuler Engineering Corporation on April 10, 2008 for construction of the project.
On May 15, 2008, the Board of Directors approved PSA's for construction management,
geotechnical and environmental services and approved an estimated construction budget in the
amount of $11,200,000 for construction of the Highland Reservoir Replacement Project.
DISCUSSION:
On February 1, 2008, Carollo submitted a contract amendment request in the amount of
$91,260 for additional engineering efforts performed beyond their original scope of work in
completing the plans and project specifications for the project. The additional work occurred
through the end of the project design. and into the bidding phase of the project primarily due to
the increased complexity of the project design and to provide additional details so that District
could have better control of the quality of work during bidding and construction. The additional
plans and specifications enabled bidders to have a clearer understanding of the design intent
and project requirements.
Due to the late timing of the contract amendment request, staff requested Carollo provide a
thorough breakdown and detailed justification for the additional work with supporting
documentation (attached). Staff reviewed the supporting documents, met and discussed these
matters with Carollo on multiple occasions. Staff and Carollo have negotiated an amendment
cost and staff recommends a final design amendment of $68,450, which represents a 25%
reduction in the requested amount. With the recommended amendment, the District's final cost
for design with Carollo is $371,923 or approximately 4.1 % of the construction cost of the project.
PRIOR RELEVANT BOARD ACTION(S):
• The Board awarded a design contract to Carollo Engineers on January 12, 2006 to
prepare engineering plans and specifications for the Highland Reservoir Replacement,
Job No. 200309.
• The Board adopted the Mitigated Negative Declaration on July 13, 2006 to comply with
environmental regulations pertaining to the construction of the reservoir.
• The Board of Directors authorized the General Manager to execute a Professional
Services Agreement with Tetra Tech on September 28, 2006, to provide value-
engineering services for the Highland Reservoir Replacement Project and approved a
contract amendment with Carollo Engineers to provide additional services to support the
value engineering effort.
• The Board of Directors authorized the General Manager to execute an Agreement with
Harbor Resources, Inc. on January 24, 2008 to properly abandon two oil wells on the
District's Highland Reservoir site in compliance with the State Department of Oil, Gas and
Geothermal Resources (DOGGR) and the Mitigated Negative Declaration.
• The Board of Directors awarded a construction contract agreement to Schuler
Engineering on April 10, 2008 in the amount of $9,049,346 for construction of the project.
• The Board of Directors approved on May 15, 2008: a Professional Service Agreement
with Carollo Engineers in the amount of $605,856 for engineering support services,
construction management and backup inspection services; a Professional Service
Agreement with Leighton Consulting Engineers in the amount of $86,200 for geotechnical
services, soils, concrete and materials testing; a Professional Service Agreement with
BonTerra Consulting in the amount of $22,251 for environmental compliance services,
and approved the proposed construction budget in the amount of $11,200,000 for
construction of the Highland Reservoir Replacement Project.
STAFF RECOMMENDATION:
Support staffs recommendation to amend the Professional Services Agreement for design and
bidding support services with Carollo for the negotiated amount of $68,450 for additional
engineering services performed during the preparation of final plans, specifications, contract
documents, exhibits and bidding supporting services for the Highland Reservoir Replacement
Project, Job No. 200309.
-mow
EngineePS...wi°,;rhv;q iv, ,,.r.. 16t i iivaaat
February 1, 2008
7427A.10
U~
r"i, 1 1 P JJ8
By
Mr. Leon de los Reyes
Water Quality Engineer
Yorba Linda Water District
4622 Plumosa Drive
Yorba Linda, California 92886-0309
Subject: Request for Amendment to the Engineering Design for the Highland Reservoir
Replacement Project (YWLD Job No. 200309)
Dear Mr. de los Reyes:
During the course of final design, Carollo prepared 83 sheets of drawings for the
construction contract documents, which represents 15 drawings in addition to the 68 sheets
of the drawings in our engineering contract. These additional drawings were required due to
the increased complexity of the project facilities, including (1) the construction of the
pipelines and appurtenant facilities to accommodate the new temporary tanks, (2) the need
for the protection of the existing cell tower facility and electric power poles with additional
retaining walls and associated grading, and (3) the abandonment of the oil wells.
The purpose of preparing these additional drawings was to address the project
requirements in detail so that the District could have better control of the quality of the work
during construction. It would also enable bidders and contractors to have clear
understanding of the design intent and requirements so that fewer contingencies for
uncertainties or variances may be included in their bids, which eventually could result in
lowering the overall project costs for the District.
We respectfully request the District issue an amendment to our engineering services
agreement in an amount of $91,260 for the additional engineering effort indicated above.
Please feel free to contact us for any questions that you may have.
Sincerely,
G
P
~e
William Lu, P.E.
Project Manager
H:\bd_pas\Client23\YorbaLindaWD\Highland Reservoir\FinaiDeslgn\HlghlandRssAmend 2_Req.doe
199 SOUTH LOS ROBLES AVENUE, SUITE 530 - PASADENA. CALIFORNIA 91101 - (626) 535-0180 - FAX (626) 535-0185
CAR04LO ENGINEERS, P.C.
Summary of Man-Flours for Additional Engineering Services
Highland Reservoir Replacement Project
1. Engineers (Project Manager, Lead Engineer, and Staff Engineer): 183 hrs
2. Designer and Support Staff: 614 hrs
Total
807 hrs a $113.08/hour
H:IcrenHYorbaLfidaYW17427A161PA~IBdpL11NF{B~aekdOwn.doc
Engineers.. P~'tra~,P~r€'~:~ sis u,^^' ~n'~+
March 25, 2008
7427A.10
Yorba Linda Water District
4622 Piumosa Drive
Yorba Linda, CA 92886.0309
Attention: Mr. Leon de bs Reyes
Subject: Additional Engineering Design for the Highland Reservoir Replacement Project
(YWLD Job No. 200309)
Dear Mr, de los Reyes:
In response to the District's request, we have prepared the attached table of the additional work
performed during the design of the Highland Reservoir Replacement Project. This table
provides the details of the additional work that was described in our letter dated February 1,
2008.
Please feel free to contact Bill Lu or myself with any questions that you may have.
~~P° i I .'k' r..~ 7... ! ~ F1~ ~ ~ it'Id .r f f,i)'""^. .p~~ggti,
carollocom
Summary of Additional Wont for the Design of the Highland Reservoir hoplacemeM Project
Time of
Item
De orgaten
Impaofed Item(s)
0courrencef
HourelCom
1. As-butt conditions
Discussions with District
Yard piping plans and
asp. - Oct. 2007
of yard piping
staff regarding actual
profiles. Location of dean
Eng: 40 hre
arrangement of yard piping
connections. Additional
Des: 240 bra
around the reservoir.
vault with ventilation fan for
Cost: $31,664
deep bypass fns.
2. 01 well
Potential of having two
Graft plan and sections,
Sep. - Oct. 2007
abandonment
contractors on-site at the
TT-1 Plan and Section
Eng: 26 hre
same time resulted in
Des, 100 bra
changing temporary Tank
Cost: $14,248
No.1(TT-1) orientation
(I .S., InNuoutist, overflow
and drain connections).
8. Electric power poles
Maintaining the existing
Grading plan and escdons.
Sep. - Nov. 2007
and poorer Ines on
power poles (vs. buried
pipeline profiles. retaining
Eng:100 bra
site
ductbanks) requires
wall plan and sections.
Des: 200 has
additional retaining walla to
Cost: $40.711
maintain existing grades
around the power poles
and protection of ft cell
tower with retaining walls.
4. As4xAf< conditions
Damns with District
Electrical alts plan.
October 2007
of MCC cabinet
and field visit to detenne
Eng: 8 hre
availability of spare
Des: 2 hre
cabinets vs. what Is shown
Cost: $1,470
In 'Highland Booster. Pump
Station Upgrade Project"
drawings. Tiro spare
cabineffi are not
avallabte/located as shown
on these drawings.
5. Drawings for tree
Modify demoMlon plan to
Modify demolition plan
Doc. 2007 - Jan.
removal contract
use as a separate contract.
2008
Eng: 6 bra
Des: 18 hre
Cost: $3,166
Engineers... Worlurig Woodoes With Water "
April 15, 2008
Mr. Leon de los ReyeQ
Yorba Linda Water District
913 S. Richfield Road
Placentia, California 92870
Subject: Request for Amendment to the Engineering Design for the Highland Reservoir
Replacement Project (YWLD Job No. 200309)
Dear Mr. de los Reyes:
In response to your request, a detailed description of the additional work listed as Items 1 and 3
in our letter dated March 25, 2008 is provided as follows:
Item 1. As-built Conditions of Yard Piping:
A. The layout of the yard piping and connections to the existing pipelines on the south
side of the reservoir were initially prepared in accordance with the existing reservoir
piping information shown on the as-built drawings, including a new storm drain
manhole connecting the new storm drain to the existing 26-inch diameter overflow
pipeline. The new storm drain manhole was located in a section of the existing 26-inch
diameter pipeline where the pipeline was capped but not Indicated on the as-build
drawings. Consequently, the drawings were revised to have the new storm drain
manhole relocated further down the hill to allow the connection of the new 27-inch
diameter storm drain to the existing 26-inch diameter pipeline that is in service. This
resulted in the following modifications:
(1) Plan and profiles for the 27-inch diameter storm drain and 12-inch diameter storm
drain, which tie into this manhole. (Sheets C-05, C-09 and C-15)
(2) Plan and profile for the 30-inch diameter overflow pipeline, which was realigned so
as not to interfere with the new location of the storm drain manhole. (Sheets C-05,
C-07 and C-15)
(3) Relocation of bypass control valve vault and observation vault where the new
location of bypass control vault required a deeper vault to tie into the existing 36-
inch diameter bypass line and additional vault ventilation details. (Sheets GC-02, C-
05 C-08, and C-15)
B. As-built drawings show an existing 30-inch diameter steel pipeline to Zone 428, which
was later found out that it was sized to handle the inlet and outlet flow rates when the
reservoir was initially constructed. The 30-inch diameter is excessively large for
handling the estimated reservoir outlet flow per the master plan, and therefore the new
outlet pipeline was revised to 18-inch in diameter for the section of piping where the
magnetic flow meter is located to lower the construction cost. (Sheets C-05 and C-07)
199 S. Los Robles Avenue, Suite 530, Pasadena. California 91101
P. 626.535.0180 F. 626.535.0185
KVO ,2._WA4 011MRO.fs011'1
Mr. Leon de los Reyes
Yorba Linda Water District
April 15, 2008
Page 2
Item 3. Electric Power Poles and Power Lines on Site:
A. The length of the retaining wall increased from 143 feet to 547 feet to protect existing
power poles and maintain the existing grades around the existing power poles.
Additional profiles of the wall were also added with this additional length of wall.
(Sheets C-13 and C-14)
B. One particular power pole on the south/east side of the reservoir is in an area where
the existing slope is already steep, approximately 2:1 (H:V) or less, the modification of
the contour lines had a cascading effect on other components including:
(1) Grading components:
a) Grading around Temporary Tanks No. 1 and No. 2 (Sheets C-02 and C-03)
b) Dirt access road around temporary tanks shifted further north (Sheets C-01 and
C-02)
c) Grading around cell tower (Sheets C-02)
(2) Piping components (profile of pipe and/or finished grade):
a) 30-inch diameter outlet pipeline (Sheets C-05 and C-07)
b) Temporary Tank No. 1 overflow and drain (Sheets C-05 and C-09)
c) 27-inch diameter storm drain pipeline (Sheets C-05 and C-08)
d) 6-inch diameter reservoir underdrain piping (Sheets C-05 and C-12)
In summary, the drawings affected by these modifications include Sheets GC-02, C-01, C-02,
C-03, C-05, C-07, C-08, C-09, C-12, C-13, C-14 and C-15. Please feel free to contact us if you
have any questions or need additional information.
Sincerely,
CAROLLO ENGINEERS, P.C.
William Lu, P.E.
Project Manager
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