MARYLAND STATE HIGHWAY ADMINISTRATION           
	OFFICE OF MAINTENANCE           
	7491 Connelley Drive           
	Hanover, Maryland 21076           
           
	September 25, 2013           
           
	ADDENDUM NO. 4           
           
           
           
	CONTRACT NO.: 	HO2195129           
	           
	DESCRIPTION:	Construction of a salt storage facility at the Administration's Jessup            
		Maintenance Facility in Howard County           
	           
	TO ALL PURCHASERS OF CONTRACT DOCUMENTS:           
           
           
	The Bid Opening date for this project is still scheduled for October 10, 2013.           
           
	The attention of prospective bidders is directed to the following revisions, additions, and/or deletions to            
	the Invitation for Bids Booklet and/or Contract Plan Sheets; the Contractor is directed to make any Pen            
	and Ink changes to the Contract Documents as described.  Corrected pages/sheets will not be provided            
	for Pen and Ink changes:           
           
	INVITATION FOR BIDS BOOKLET           
           
	Page						Revision Description           
	           
	168-			       REMOVE and REPLACE the “Special Provision SECTION 083613 – Sectional Doors”            
                  174     	     in its entirety.           
           
	318-	       REMOVE and REPLACE the “Special Provision SECTION 221119 – Domestic Water Piping           
		  324D        Specialties” in its entirety.           
           
	  750	             REVISE by Pen and Ink the “Geotechnical Report – Section V. General Soils 										   			 	 	   					    						              
																                                               							                     Characterization” – Paragraph 2 – Sentence 2:           
      		              Replace:	Groundwater elevations ranged from ‘ El. 203.7 to El. 209.8’ to ’El. 186.6            
                     to El.208.1’.           
                 
752								              REVISE by Pen and Ink the “Geotechnical Report – Section VI – B.  Recommendations 	           
								                     For Salt Barn and Retaining Wall” – Paragraph 3:           
                          From - 	Spread footings for the salt barn……           
                 To - 	Spread footings for the salt barn should be at least 2 feet wide and buttress footings            
should be at least 2 feet wide and 12 feet long.  Spread footings should be designed            
	using an allowable bearing capacity (qall) of 2,500 pounds per square foot (psf).           
           
           
           
	                  
           
	       Contract No.: HO2195129           
       Addendum No. 4           
       September 25, 2013           
       Page 2            
           
	CONTRACT PLAN SHEETS           
           
	Sheet 										Revision Description           
           
							               REPLACE the following Plans:           
           
			C-107	              SITE DETAILS           
           1.		  Detail D “Bollard” has been revised to show an 8” diameter bollard with a height            
	    of 6’ above finished grade.           
           
			         C-301	       				      MICRO-BIORETENTION #1 PLAN AND SECTIONS           
1.	 The anchor trench for the impermeable liner has been removed.  The impermeable liner will            
now be extended 5 feet beyond edge of micro-bioretention facility and covered with soil.           
2.	 In the Micro-Bioretention MDE Tabulations table, “Filter Bed Bottom” has been revised to            
read “Facility Bottom Elevation”.           
3.	 Design values in the Micro-Bioretention MDE Tabulations table have been updated.           
           
         C-302					             MICRO-BIORETENTION #2 PLAN AND SECTIONS           
1.	 The geotextile has been revised to show it extended 5 feet beyond edge of micro-bioretention            
facility 	and covered with soil.           
2.	  In the Micro-Bioretention MDE Tabulations table, “Filter Bed Bottom” 								has been revised to            
read “Facility Bottom Elevation”.           
            3.	  Design values in the Micro-Bioretention MDE Tabulations table have been updated.           
           
C-303            	MICRO-BIORETENTION #3 PLAN AND SECTIONS           
1.	The anchor trench for the impermeable liner has been removed.  The impermeable liner will now            
be extended 5 feet beyond edge of micro-bioretention facility and covered with soil.           
2.	 In the Micro-Bioretention MDE Tabulations table, “Filter Bed Bottom” has been revised to                                    
read “Facility Bottom Elevation”.           
            3.	 Design values in the Micro-Bioretention MDE Tabulations table have been updated.           
           
C-304             MICRO-BIORETENTION #4 PLAN AND SECTIONS           
1.	The geotextile has been revised to show it extended 5 feet beyond edge of micro-           
							   bioretention 								facility and covered with soil.           
2.	In the Micro-Bioretention MDE Tabulations table, “Filter Bed Bottom” has been revised to                          
								   read “Facility Bottom Elevation”.           
            3.	Design values in the Micro-Bioretention MDE Tabulations table have been updated.           
           
C-305	              MICRO-BIORETENTION #5 PLAN AND SECTIONS           
1.	The geotextile has been revised to show it extended 5 feet beyond edge of micro-           
		   bioretention facility and covered with soil.           
2.	In the Micro-Bioretention MDE Tabulations table, “Filter Bed Bottom” has been            
										   revised to read “Facility Bottom Elevation”.           
3.	Design values in the Micro-Bioretention MDE Tabulations table have been updated.           
           
           
           
           
           
       Contract No.: HO2195129           
       Addendum No. 4           
       September 25, 2013           
       Page 3           
           
           
C-306	              DETENTION BASIN PLAN AND SECTIONS           
1.	Section B-B has been revised to show a trash rack for the low flow orifice on Inlet I-2.           
2.	A trash rack detail has been added.           
3.	An Emergency Spillway Section has been added.           
           
  C-402				              EROSION AND SEDIMENT CONTROL PLAN           
1.	The two Riprap Inflow Protections have been revised to be Gabion Inflow Protections.           
2.	The super silt fence downstream of ES-1 has been removed.  The area surrounding the                
detention pond outfall pipe shall be stabilized according to Same-Day Stabilization            
	  practices.           
3.	The super silt fence across from the sediment trap outfall shall be removed once the trap is            
constructed.           
           
S-201              GENERAL NOTES, DETAILS AND SECTIONS           
1.	Detail E “Retaining Wall” has been revised to add a callout for the reinforcing in the           
   retaining wall footing.           
2.	Foundation Note 11 has been added.           
           
A-104              VEHICLE STORAGE – PLAN & ELEVATIONS           
1.	The exterior hood at the section overhead door on the Building Elevations has been            
   removed.           
           
A-401	SALT BARN – PARTIAL PLAN & ELEVATIONS           
             1.	Detail 10 “Typical Locker Elevation” has been revised to show 6 lockers.           
           
A-602              DOOR SCHEDULE AND DETAILS           
             1.	Doors V101.2 and V101.3 have been revised to be Steel in the Door Schedule.           
2.	The bollard callout on the “J-5 Jamb” detail has been revised to show the bollard            
   as 6’ above finished floor.           
           
E-102               PARTIAL PLAN – ATS, GENERATOR AND MDP           
1.	Detail B “Partial Plan – Brine Bump” has been revised to show the brine pump           
   controllers.           
2.	Drawing Note #10 has been revised.           
3.	Drawing Note #11 has been revised.           
4.	Drawing Note #14 has been added.           
           
P-102               BRINE STORAGE SYSTEM           
             1.	Drawing has been added to set.           
           
           
           
           
           
       Contract No.: HO2195129           
       Addendum No. 4           
       September 25, 2013           
       Page 4            
           
           
		Before submitting your bid, please remove any existing Invitation for Bids pages and contract drawings            
	(as applicable) that have been replaced by this Addendum, and insert the revised Invitation for Bids            
	pages and contract drawings (as applicable) in their proper sequence.             
           
	Attach this Addendum letter to the front cover of the Invitation for Bids booklet prior to submitting  your            
	bid.           
           
	Any bidder having questions concerning this contract should contact Joan Herbst at 410-582-5544, Fax            
	410-582-9862.           
           
	Failure to comply with these instructions may result in your bid being declared irregular.           
           
	RUSSELL A. YUREK           
	DIRECTOR - OFFICE OF MAINTENANCE