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April 27, 2006          
          
Subject: Contract No.AL3335180          
F.A.P. No. AC-BR-0001(844)E          
          
Description: Replacement of Bridge           
No. 1010 on MD 936          
(Georges Creek Road) over           
Neff Run          
          
          
ADDENDUM NO. 3          
          
          
TO ALL PURCHASERS OF CONTRACT DOCUMENTS          
          
          
Gentlemen:          
          
The bid opening for this project has not changed. It           
is still May 18, 2006 at 12:00 noon as established by          
Addendum No. 2.          
          
          
THE FOLLOWING INFORMATION IS IN RESPONSE TO QUESTIONS           
RECEIVED FROM PROSPECTIVE BIDDERS.          
          
          
Question No. 1          
On sheet no. 12 of the plans, can portions of the existing          
ornamental fence be re-used or must all of it be new?          
          
Answer:          
Components of the existing railing are missing. Based on this,          
the contractor shall use all new railing as specified in the          
contract documents.          
          
          
          
Question No. 2          
On sheet no. 57 of the plans, only 3 subsurface borings are          
shown. Sheet no. 20 indicates 7 borings were made. Please           
provide data for the other 4 borings.          
          
          
Sheet 1 of 10          
          
Answer:          
The location of the three foundation borings that were taken           
for the design of the project are depicted on the boring location          
plan on sheet no. 57 along with the associated boring logs.           
The 7 boring target locations depicted on sheet no. 20 of           
the plans are the locations where the contractor will be           
required to perform subfoundation investigation borings as           
outlined on page 172 of the proposal. This work will be paid          
for under item 4005 "Subfoundation Investigation".          
          
          
          
Question No. 3          
On sheet no. 64 of the plans, where are the boulders, crushed          
stone and sand bags paid for?          
          
Answer:          
The footer boulders shall be paid for under item 3005, "Boulders          
for Stream". The boulders shall only be paid for once. Moving          
boulders shall be incidental to `Maintenance of Stream Flow"          
item. The crushed stone will not be measured for payment but          
shall be incidental to cost of "Boulders for Stream". The cost          
of sandbags shall be incidental to cost of "Maintenance of Stream          
Flow".          
          
          
          
Question No. 4          
On sheet no. 64 of the plans, detail for the stream diversion          
dike - Phase IB, please clarify if this detail is looking          
downstream or upstream. What is the purpose of the Class SE          
geotextile and is it paid for separately or is it incidental?          
          
Answer:          
The detail is shown looking upstream. The Class SE geotextile          
has been removed from the detail as a part of this addendum no.          
3.          
          
          
          
Question No. 5          
On sheet no. 64 of the plans, how is the excavation for the 5'x          
5' flume paid for?          
          
Answer:          
As outlined on page 158 of the proposal, under section 308.04.26,          
the excavation is incidental to the "Maintenance of Stream Flow"          
item.          
          
          
          
Question No. 6          
On sheet no. 64 of the plans, is it the intent to re-use the          
boulders for the stream stabilization shown on sheet 60?          
          
Answer:          
At the contractor's option the boulders shown on sheet 64 of the          
plans may be re-used for the stream stabilization once they are          
no longer needed for the "Maintenance of Stream Flow".          
Question No. 7          
On sheet no. 60 of the plans, where is the stream excavation for          
the Class II Riprap and boulders payment shown (Class 5          
Excavation)?          
          
Answer:          
Class 5 excavation is paid for under item 2005.          
          
          
          
          
Question No. 8          
On sheet no. 15A of the plans, the match line shown does not          
match to Sheet No. H/H-4. Please clarify.          
          
Answer:          
The sheet reference is incorrect. It should be referring to          
sheet H/H-5. This will be corrected as a part of this addendum          
No.3.          
          
          
          
          
Question No. 9          
On sheet no. 17 of the plans, the match line shown does not match          
Sheet H/H-5. Please clarify.          
          
Answer:          
The final portion of stream work downstream of the bridge should          
be complete at this time and no match line is required. We show          
the match line on this sheet as reference to the contractor for          
the final contours and grading that occurred outside the work          
area shown in phase II.          
          
          
          
Question No. 10          
On sheet no. 16 of the plans, please clarify the intent of          
diversion flume note #7. Is the "use of pipes" not permitted or          
is the "use of pipes smaller than what is shown" in the cross          
section not permitted?          
          
Answer:          
The use of pipes in any form will not be permitted for the          
maintenance of stream flow on this project.          
          
          
          
Question No. 11          
On page 164 of the Specs, the payment section says boulders paid          
"per boulder used" and the bid item is measured per ton (items          
3005 and 3006). Please clarify.          
          
Answer:          
Page 164 of the specifications has been corrected as a part of          
this addendum no.3. Boulders will be paid for on a ton basis.          
          
          
          
Question No. 12          
On page 47 of the proposal, in the last sentence, where is the          
lead paint?          
          
Answer:          
This is a standard note used on all projects. While the majority          
of the bridge is concrete, portions of the abandoned gas line          
under the bridge and the traffic railing on the bridge may          
contain paint from prior maintenance activities.          
          
          
          
Question No. 13          
On page 196 of the proposal regarding concrete stain - Since only          
1 stain is specified, is it the intent to stain the bricks and          
mortar one color?          
          
Answer:          
No. Only the exposed surface portion of the bricks shall be          
stained the red color as specified. The mortar lines shall          
appear as a light gray color.          
          
          
          
          
Question No. 14          
The planned NTP for this project is July 10, 2006 with no in-          
stream construction after September 30. In our opinion, Abutment          
A & Retaining Wall D cannot be completed by September 30 which          
means the 13'x 10' flume will be in its original location on          
October 1. This also means the 13'x 10' flume cannot be removed          
& relocated to its Phase II configuration until March 1, 2007 &          
must remain in the stream for the 7 months from October 1 - April          
30. This appears to us to pose a more serious threat to the          
environment & the downstream railroad bridge (in the event of          
multiple, probably high-water events over the 7 month. Please          
consider permitting Phase II Stream Maintenance during the 7          
months.          
          
Answer:          
The removal of the diversion during the restriction dates can          
only be done by a special waiver from the permitting agencies.          
The project shall be bid as shown in the advertised documents          
with the specified restriction dates.          
          
          
          
Question No. 15          
On page 199 of the proposal regarding the Concrete Coping, can          
pictures of the pattern detail for the simulated cut stone finish          
be provided (E-Mail), or must we all travel to the Hanover          
Complex?          
          
Answer:          
This portion of the specification is in error and only applies to          
the coping on a noise wall. All copings on this project shall          
have a smooth concrete finish. The specification has been          
revised as a part of this addendum no. 3.          
          
          
          
Question No. 16          
On sheet 7 of the plans, boulders for slope and channel          
protection, 50 square yards, is this paid for under item 3005 and          
3006?          
          
Answer:          
This work shall be incidental to the "Maintenance of Stream Flow"          
item. A revision has been made to the plans noting this as a          
part of this addendum no. 3.          
          
          
          
Question No. 17          
On sheet 9 of the plans, The Portable Sediment Tank is a bid          
item. Why does it have a double asterisk?          
          
Answer:          
As stated under the double asterisk, all portable sediment tanks          
will be incidental to the "Maintenance of Stream Flow" item.          
Item 3016 has been deleted from the schedule of prices by this          
addendum no. 3.          
          
          
          
Question No. 18          
On sheet 15 of the plans, it appears that if the temporary          
shoring is not extended along Abutment A in to the street (MD          
936), an open cut sloped back on a 1:1 will not permit the          
temporary entrance into the parking lot to be installed as shown.          
I.E. the top of the cut (without shoring) will be at least 18          
feet from Abutment A's footer. Please clarify.          
          
Answer:          
The limits of sheeting shown on the plans are conceptual in          
nature. It shall be the contractor's responsibility to design          
and place temporary sheeting to the limits necessary while still          
maintaining traffic as shown on the plans.          
          
          
          
Question No. 19          
On sheet 17 of the plans, is the shoulder restoration where the          
temp. shoring goes into MD 36 shoulder paid or incidental?          
          
Answer:          
The restoration of this shoulder area is incidental to the other          
pay items related to the construction of the bridge.          
          
          
          
Question No. 20          
On sheet 64 of the plans, where is the boulder outfall protection          
paid?          
          
Answer:          
The boulder outfall protection is incidental to the "Maintenance          
of Stream Flow" item.          
          
          
          
Question No. 21          
On sheet 30 of the plans, please clarify the note in the top,          
right corner of this sheet. What is to be replaced & what is not          
replaced?          
          
Answer:          
As stated in the note all of the fencing is to be replaced in-          
kind with new PVC vinyl coated fencing.          
          
          
          
          
Question No. 22          
On sheet 18 of the plans, the note at the center bottom of the          
page says cost for removal of the retaining wall is incidental to          
"removal of the existing structure". What is Item 2002 for?          
          
Answer:          
The removal of portions of retaining wall C and the complete          
removal of retaining wall D is incidental to the "Removal of          
Existing Structure" item. Item 2002 covers the removal of the          
failing gabion and brick retaining walls downstream of the          
bridge.          
          
          
          
Question No. 23          
On sheet 10 of the plans, for construction details, what does          
notes C & D means? Are existing hand holes to be reused?          
          
Answer:          
Yes, the hand boxes on the east end of the bridge are to remain          
in place for re-use.          
          
          
          
Question No. 24          
On sheet 41 of the plans, where is the 4" PVC sleeves for gas          
line paid?          
          
Answer:          
As stated on sheet 42 of the plans, in note no. 8, the cost of          
the sleeve is incidental to the "Superstructure Concrete" item.          
          
          
          
          
Question No. 25          
On sheet 4 of the plans, one note says sidewalk ramps are          
incidental; yet the tabulations include their quantities for          
curb/gutter & sidewalk. Please clarify.          
          
Answer:          
The ramps shall be included in the sidewalk pay item (item 6003).          
          
          
          
          
Question No. 26          
On page 204 of the proposal, the last sentence, where are Anti-          
Climb Shields installed?          
          
Answer:          
This is a standard specification covering the placement of all          
ornamental fencing, anti-climb shields are not required for this          
project.          
          
          
          
Question No. 27          
On sheet no. 17 of the plans, it appears to us that the temporary          
sheeting shown must be extended or the excavation at the top of          
slope for wing wall II will go beyond the proposed LOD by at          
least 10 to 12 feet. Please clarify.          
          
Answer:          
The limits of sheeting shown on the plans are conceptual in          
nature. It shall be the contractor's responsibility to design          
and place temporary sheeting to the limits necessary while still          
maintaining traffic and staying within the LOD as shown on the          
plans.          
          
          
          
          
Question No. 28          
On sheet 15 of the plans, what is the intent regarding the source          
of backfill material for abutments A and B and the retaining          
walls? Although there is over 4000 cubic yards of excavation on          
the project, its suitability for use as back fill is questionable          
in which case the common borrow pay item (2006) should be used,          
but it is only 100 cubic yards. Is it the intent that the          
excavation will provide suitable back fill at abutments A and B          
and the retaining walls such that the common borrow item will not          
be used for this purpose or is the common borrow item          
understated?          
          
Answer:          
The intent is that the excavated material from behind the          
existing abutments and retaining walls will be used as backfill          
material for the new abutments and retaining walls. The          
contractor shall note that the no.57 drainage material and graded          
aggregate base material placed behind the abutments and retaining          
walls, as outlined in the details on sheet 52 of the plans, is          
incidental to the pertinent concrete items associated with their          
construction. The intent of the common borrow item is that it be          
used in conjunction with the roadway construction.          
          
          
          
          
Question No. 29:          
On sheet 40 of the plans, Section J-J, please clarify if the          
"Class III Riprap Scour Protection" shown is paid per ton under          
Bid Item 3007 or paid per S.Y. under Bid Item 3019. If paid          
under Item 3007, what is Item 3019 for?          
          
Answer:          
All "Class III RipRap Scour Protection" as depicted on this sheet          
in section J-J, will be measured and paid for under bid item 3007          
"Class III RipRap for Scour Protection at Bridge" on a per ton          
basis. Item 3019 was related to the maintenance of stream flow          
for the stream work and is being deleted by this addendum no. 3          
since it is incidental to the cost of "Maintenance of Stream          
Flow".          
          
          
          
Question No. 30          
Oh sheets 39 and 40 of the plans, regarding Class II Riprap.          
Sheet 39, paragraph 5 says "cost of Class II Riprap fill over          
class III Riprap Scour Protection" is paid per C.Y. under Item          
3002. Note 3 on sheet 40 says "Class II Riprap for Slope &          
Channel Protection at the bridge will be paid on a S.Y. basis" -          
presumably Bid Item 3018. Please clarify this apparent conflict.          
          
Answer:          
The Class II Riprap Fill shown on sheet 39 of the plans, in          
sections H-H and I-I, is paid for under item 3002 since it is          
related to the final grading and stabilization of the active          
stream channel. The Class II Riprap Slope Protection shown on          
sheet 40 of the plans in section J-J is paid for under item 3018          
since it is related to the protection of the fill slope adjacent          
to the bridge out of the active stream channel.          
          
          
          
          
Question No. 31          
On sheets 15A and 59 of the plans, please confirm the dividing          
line between Class 3 pay limits in front of New Wall D & the          
stream excavation, Class 5 pay item, e.g. (looking downstream @          
stream station 0+40).          
          
Answer:          
Class 3 excavation pay limits for the construction of new          
retaining wall D will be as specified in section 402.04 of the          
specifications. The remaining excavation between the limits of          
payment for new retaining wall D and the front face of existing          
retaining wall D shall be incidental to the "Removal of Existing          
Structure" item as stated on sheet 16 of the plans. This same          
method of payment will hold true for all portions of the new          
bridge to be constructed under this contract at abutments A and B          
and retaining wall C.          
          
          
          
          
Question No. 32          
Bid Item 3002, Class II Riprap in stream is planned to be paid by          
the C.Y. We strongly recommend this is changed to a unit price          
per ton to greatly simplify the payment process. To calculate          
the C.Y. will be a very expensive process of questionable          
accuracy. It would be necessary to calculate many stream cross-          
sections due to the rapidly changing stream excavation contours          
and then to deduct the volume of the boulders. A per ton unit          
price would be much simpler & require far less man hours & be          
very accurate & equitable. This should also apply to the Class          
II Riprap mixed with native stream material.          
          
Answer:          
The payment for items 3002 and 3003 has been revised as a part of          
this addendum no. 3 to a "per ton" basis.          
          
          
          
THE ATTENTION OF PROSPECTIVE BIDDERS IS DIRECTED TO THE FOLLOWING          
CHANGES IN THE INVITATION FOR BIDS AND THE PLANS:          
          
          
INVITATION FOR BIDS:          
          
Sheet No. Description          
          
          
v Updated the table of contents to reflect           
changes in the proposal.          
          
          
          
157 Replacement sheet reflecting an update of          
the specification for "Erosion and Sediment           
Control".          
          
          
          
158.01 to 158.04 New sheets added with specifications          
covering the newer "Erosion and Sediment          
Control" requirements.          
          
          
          
164 Replacement sheet reflecting a revision to the           
method of payment for stream bed stabilization           
to a "per ton" basis.          
          
          
          
199 Replacement sheet reflecting a revision to the           
"Architectural Treatment" specification to           
clarify the finish for the concrete copings.          
          
          
          
          
256 Replacement sheet reflecting a revision to          
the asphalt specification.          
          
          
          
294 Replacement sheet reflecting a revision to the          
quantity for "Temporary Crash Cushion Sand           
Filled Barrels for Maintenance of Traffic"           
in the Schedule of Prices.          
          
          
          
298 Replacement sheet reflecting a revision to the           
unit of payment for "Class II Riprap - Stream"           
and Class III Riprap for Scour Protection -           
Stream" in the Schedule of Prices.          
          
          
          
300 Replacement sheet reflecting the deletion of           
item 3016 from the Schedule of Prices.          
          
          
          
315 Replacement sheet reflecting a revision to the           
summary of bid items in the Schedule of Prices.          
          
          
PLANS:          
          
Sheet No. Description          
          
          
1 Added addendum No. 3 indexing to the title          
sheet.          
          
          
          
4 Replacement sheet reflecting revisions to           
several work notes.          
          
          
          
7 Replacement sheet reflecting revisions to the           
sediment and erosion control plan.          
          
          
          
8 Replacement sheet reflecting revisions to the           
sediment and erosion control plan.          
          
          
          
9 Replacement sheet reflecting revisions to the           
sediment and erosion control plan.          
          
          
          
15 Replacement sheet reflecting revisions to the           
limits of the 100 year floodplain.          
          
          
          
15A Replacement sheet reflecting revisions to the           
sequence of construction notes and the 100 year          
floodplain.          
          
          
          
17 Replacement sheet reflecting revisions to the           
limits of the 100 year floodplain.          
          
          
          
62 Replacement sheet reflecting revisions to the           
sequence of construction notes.          
          
          
          
63 Replacement sheet reflecting revisions to the           
sequence of construction notes.          
          
          
          
64 Replacement sheet reflecting revisions to the           
sequence of construction notes and stream details.          
          
          
          
Please attach this Addendum No. 3to the front of the Invitation          
for Bids before submitting your bid.          
          
          
Remove the original above mentioned sheets from the advertised          
Invitation for Bids and Plans. These removed sheets are hereby          
voided.          
          
          
Insert and securely fasten the attached sheets in their proper          
sequence.          
          
          
Questions concerning this Addendum No. 3 may be directed to our          
Project Engineer - John W. Narer at (410) 545-8368.          
          
          
Sincerely,          
          
          
          
Douglas H. Simmons          
Deputy Administrator/Chief Engineer          
for Planning and Engineering          
          
          
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