09/15

Project No. 15-015K

September 20, 2016

TO ALL POTENTIAL BIDDERS

Subject: Addendum No. 2 for Drainage Improvements For Nueces River Fishing Area

Ladies/Gentlemen:

This addendum is considered part of the Contract Documents and is issued to change,

amplify, add to, delete from, or otherwise explain the Contract Documents. Where provisions of

this addendum differ from those of the original Contract Documents, this addendum will take

precedence and govern.

Bidders are hereby notified that they must incorporate this addendum into their bids, and

it will be construed that the contractor’s bid reflects with full knowledge all items, changes, and

modifications to the Contract Documents herein specified. Bidders will acknowledge receipt of

this addendum in the space provided on the Bid form.

BID DOCUMENTS

1. Reissued “Revised BID BREAKDOWN” sheets (pages 1 – 3).

TECHNICAL SPECIFICATIONS

Table of Contents

1. Remove and replace with “Revised TABLE OF CONTENTS” sheet.

Division 01

1. Remove Section 01 57 13 “TEMPORARY EROSION AND SEDIMENT CONTROL”

dated 9/2/2016, pages 1 – 9.

Division 32

1. Remove Section 32 91 00 “SEEDING” dated 9/2/2016, pages 1 – 6.

2. Insert Section 32 91 00 “TOPSOIL AND SEEDING” dated 08/15, pages 1 – 4.

To All Potential Bidders Project No. 15-015K

Page 2 Addendum No. 2

September 20, 2016

09/15

DRAWINGS

1. Reissued DWG 15-015K-05

2. Reissued DWG 15-015K-07

Sincerely,

Louis Donato, E.I.T.

Associate Project Engineer

LD/clh

Enclosures

cc: Sean Strawbridge

David L. Krams

Sarah Garza

David L. Michaelsen

Sonya Lopez-Sosa

Revised Bid Breakdown Sheet

05/14 1/3

___________________________________

(Company Name)

BID BREAKDOWN SHEET

DRAINAGE IMPROVEMENTS FOR NUECES RIVER FISHING AREA

PORT OF CORPUS CHRISTI AUTHORITY

BREAKDOWN OF BID PRICES

This breakdown is a part of the Contract Documents and is designed to help the PCCA evaluate the

bids to detect possible errors or omissions and to establish values for the individual items of work so

that modifications to the contract can be more easily resolved. Please fill out the items listed below

so that the total matches the prices shown on the bid. The bidder is invited to include his own

estimates if he so chooses.

Design Bidder’s Unit Total

Quantity Quantity Amount Amount

BASE BID

1. Mobilization/

Demobilization

1 LS

$

$

2. Bonds &

Insurance

1 LS

$

$

3. Construct Drainage

Channel

502 CY

$

$

4. Fill Depression 145 CY $ $

5. Culvert Pipe (24” RCP) 24 LF $ $

6. Precast Concrete

Headwall

1 EA

$

$

7. Precast Concrete Safety

End Treatment (SET)

1 EA

$

$

8. Culvert Rip Rap

Protection

8 CY

$

$

9. Geogrid- River

Access Road

3,566 SY

$

$

10. Roadbase- River

Access Road

304 CY

$

$

11. Roadbase- Service

Road

371 CY

$

$

12. Topsoil & Reseeding 1 ACRE $ $

13. SW3P Items 1 LS $ $

14. Miscellaneous 1 LS $ $

15. Roadbase-maintenance 35 CY $ $

Total Amount – Base Bid

$

BID BREAKDOWN SHEET

(Continued)

Revised Bid Breakdown Sheet

05/14 2/3

ADDITIVE BID ITEM 1: DOUBLE BARRELED RCP CULVERT (List additional costs additive to the Base Bid.)

1. Culvert Pipe (24” RCP) 24 LF $ $

2. Precast Concrete

Headwall

1 EA

$

$

3. Precast Concrete Safety

End Treatment (SET)

1 EA

$

$

4. Culvert Rip Rap

Protection

1 CY

$

$

Miscellaneous 1 LS

Total Amount – Additive Bid Item 1 $

The preceding design quantities are approximate and are not guaranteed. Bidders will prepare their

own estimate of work and bid accordingly. Bidders will indicate their own estimate of work under

the column labeled “Bidder’s Quantity” and calculate the “Total Amount” based on same. If this

column is left blank, the bidder will be deemed to be in agreement with the design quantities and no

adjustment in contract price will be made for variance.

LIST OF SUBCONTRACTORS & SUPPLIERS

Please list all intended subcontractors and major suppliers below. The bidder awarded the contract

will be required to notify the Engineer of any changes in the actual suppliers and subcontractors.

Material Item Name of Supplier

BID BREAKDOWN SHEET

(Continued)

Revised Bid Breakdown Sheet

05/14 3/3

Subcontractors (if any):

Revised TABLE OF CONTENTS

TECHNICAL SPECIFICATIONS

DRAINAGE IMPROVEMENTS FOR NUECES RIVER

FISHING AREA

PORT OF CORPUS CHRISTI AUTHORITY

DIVISION 00 - PROCUREMENT AND CONTRACTING REQUIREMENTS

00 73 10 PCCA POLICIES & PROCEDURES

DIVISION 01 - GENERAL REQUIREMENTS

01 14 13 ACCESS TO PORT AUTHORITY PROPERTY

01 31 13 PROJECT COORDINATION

01 31 19 PROJECT MEETINGS

01 33 00 SUBMITTALS

01 35 21 POLLUTION PREVENTION

01 40 00 QUALITY REQUIREMENTS

01 42 16 DEFINITIONS AND STANDARDS

01 50 00 TEMPORARY FACILITIES AND CONTROLS

01 57 13 TEMPORARY EROSION AND SEDIMENT CONTROL

01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS

01 57 23.11 TEMPORARY STORM WATER

(POLLUTION CONTROLS CONSTRUCTION SITE 1-5 ACRES)

01 70 00 EXECUTION AND CLOSEOUT REQUIREMENTS

DIVISION 31 - EARTHWORK

31 10 00 SITE CLEARING

31 22 00 GRADING

31 23 16 EXCAVATION

31 23 23 FILL

31 37 00 RIPRAP

DIVISION 32 - EXTERIOR IMPROVEMENTS

32 05 19.20 GEOGRID & GEOTEXTILES

32 11 23 AGGREGATE BASE COURSES

32 91 00 TOPSOIL AND SEEDING

DIVISION 33 - UTILITIES

33 42 13 PIPE CULVERTS

08/15

32 91 00 - 1/4

SECTION 32 91 00

TOPSOIL AND SEEDING

PART 1 – GENERAL

1.01 SECTION INCLUDES

This specification shall govern all work necessary for placing topsoil, fertilizing, planting

seeds, laying sod, placing mattings or blankets, and maintaining vegetation in the areas

designated on the plans.

PART 2 – PRODUCTS

2.01 MATERIALS

A. Topsoil

Provide easily cultivated, fertile topsoil that is free from objectionable material, has a

high resistance to erosion, and is able to support plant growth. Topsoil is subject to

testing by engineer.

B. Seeding

Provide seed from the previous season’s crop meeting the requirements of Texas Seed

Law, including the testing and labeling for pure live seed (PLS). Furnish seed of the

designated species and use within 12 months from the date of analysis. When

Buffalo grass is specified, use seed that is treated with potassium nitrate (KNO3) to

overcome dormancy. Use the below tables to determine appropriate seed mix and

rates as specified on the plans.

Table 1: Permanent Rural Seed Mix (January 1st – May 1st)

Clay Soils Sandy Soils

Species and Rates

(lbs PLS/acre)

Species and Rates

(lbs PLS/acre)

Green Sprangletop 0.3 Green Sprangletop 0.3

Sideoats Grama (Haskell) 2.7 Bermudagrass 1.8

Bremudagrass 1.8 Buffelgrass (Common) 0.4

Buffalograss (Texoka) 1.6 Sand Lovegrass 0.6

Plains Bristlegrass 1.2 Lehmanns Lovegrass 0.6

Illinois Bundleflower 1.0 Purple Prairieclover 0.5

Table 2: Temporary Cool Season Seeding (September 1st – November 30th)

Seed Mix and Rates (lb/acre)

Oats 72

08/15

32 91 00 - 2/4

Table 3: Temporary Warm Season Seeding (May 1st – August 31st)

Seed Mix and Rates (lb/acre)

Foxtail Millet 34

C. Sod

Sod shall be appropriate for the soil it will be placed atop and shall be from a vendor

in south Texas.

D. Mattings and Blankets

Mattings and blankets refer to sheets of erosion-control materials (straw, jute, wood

fiber, coconut fiber, plastic netting, or other materials approved by the engineer)

placed on the surface of disturbed soil. They are commonly used to stabilize slopes

or used as flexible channel liners, where they protect the soils until vegetation

becomes established. Contractor shall suggest mattings and blankets for use at the

site and seek approval, prior to purchase, from PCCA Director of Environmental

Planning & Compliance.

E. Compost

Furnish compost that has been produced by aerobic (biological) decomposition of

organic matter and meets the requirements of “U.S. Department of Agriculture Test

Methods for the Examination of Composting and Compost”. Do not use materials

that have been treated with chemical preservatives as a compost feedstock or as wood

chips. The compost shall be stockpiled onsite and maintained until approved by the

engineer. Engineer reserves the right to sample compost at the jobsite.

F. Fertilizer

All fertilizer shall be delivered in bags or clearly marked containers showing the

analysis, name, trademark, and warranty. The fertilizer is subject to testing by the

State chemist in accordance with the Texas fertilizer law. Fertilizer shall have an

analysis of 12-12-12 (% nitrogen, phosphoric acid, and potash) as determined by the

Association of Official Agricultural Chemists. At least 50% of the nitrogen

component must be of a slow-release formulation. Fertilizer shall be free flowing and

uniform in composition.

PART 3 – EXECUTION

3.01 INSTALLATION OF TOPSOIL

Before placing topsoil, cultivate the area to a depth of 4 inches. Spread the topsoil to

a uniform loose cover of 2 to 4 inches or at the thickness specified and shape the

topsoil as directed. Water and roll the topsoil with a light roller or other suitable

equipment.

08/15

32 91 00 - 3/4

3.02 INSTALLATION OF SEEDING

Cultivate the area to a depth of 4-inches before placing the seed unless otherwise

directed by the engineer. When performing permanent seeding after an established

temporary seeding, cultivate the seedbed to a depth of 4-inches or mow the area

before placement of the permanent seed. Distribute the seed or seed mixture

uniformly over the areas shown on the plans using hand or mechanical distribution or

hydro-seeding on top of the soil. When seed and water are to be distributed as a

slurry during hydro-seeding, apply mixture to the area to be seeded within 30 minutes

of placement of components in the equipment. Roll the planted area with a light

roller or other suitable equipment. Seeds may also be drill seeded at a depth of 0.25

to 0.33 inches. If seeding is to be applied on slopes greater than 3:1, then matting

and/or other stabilization methods shall be used.

3.03 INSTALLATION OF SOD

Sod is composed of living vegetation and is placed on disturbed soil that requires an

immediate and permanent vegetative cover. Grading activities are to be completed

prior to sod installation. Soils of poor quality may require fertilization or the

application of compost or topsoil prior to sod installation. Sod shall have at least a

one inch root system and be free of noxious weeds, other grasses, or any matter

deleterious to the growth of the sod. Only sod that has been harvested, delivered, and

installed within a period no greater than 36 hours shall be used. Cultivate the area to

a depth of 4-inches before laying sod, unless otherwise directed by the engineer. The

sod is to be installed in a staggered pattern with the long side perpendicular to the

slope. If a single row or spot sodding is to occur, the sod is to be planted where the

top of the sod’s soil is level with the surrounding ground. All exposed sides of the

sod shall be firmed with soil without covering the sod with soil. Sod is to be rolled

immediately to achieve firm contact with the soil. For slopes greater than 3:1, the sod

shall be anchored to the ground.

3.04 INSTALLATION OF MATTINGS AND BLANKETS

Complete grading of the soils, fertilize as needed, and seed area prior to installation of

mattings or blankets. Install and anchor the mattings and blankets, previously

approved for use by the PCCA Environmental Compliance Manager, in accordance

with the manufacturer’s specifications.

3.05 INSTALLATION OF COMPOST

Compost is appropriate on slopes of 3:1 or less. After excavation and embankment

work is complete, remove and dispose of objectionable material from the topsoil

before placing compost. Apply compost uniformly 2 to 4 inches deep. Compost may

be blended with topsoil. Water and roll the compost with a light roller or other

suitable equipment.

08/15

32 91 00 - 4/4

3.06 APPLICATION OF FERTILIZER

Deliver and apply the fertilizer uniformly at a rate equal to 100 pounds of nitrogen

per acre or at the analysis and rate specified on the plans.

3.07 APPLICATION OF WATERING

Use water that is clean and free of industrial wastes and other substances harmful to

the growth of vegetation. Apply water with equipment appropriate to distribute water

at a uniform and controllable rate. Ensure that watering does not erode soil or

plantings. For seeded areas, grass seed make take 5-30 days to germinate depending

on the seed type and temperature. Seeded areas should be watered daily at a

frequency to ensure stabilization of mature vegetation to 70% of the background

vegetation. The sodded areas are to be watered daily to where one inch of the soil

below the sod has be permeated. Watering shall continue until the roots of the sod

are affixed into the soil and as dry conditions require.

PART 4 – MEASUREMENT & PAYMENT

(Not Used)

END OF SECTION