20061144 Ver 4_More Info Received_20090617

? ARCADIS
Ms. Cyndi Karoly
N.C. Division of Water Quality
401 Wetlands Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
..4
Subject:
City of Raleigh Dempsey E. Benton Water Treatment Plant Project - Permit
Modification Request - UT to Walnut Creek
Response to Request for More Information dated 11 June 2009
DWQ Project # 06-1144 Ver. 4
Dear Cyndi:
This letter and its attachments have been generated in response to the Request for
More Information generated by the Division of Water Quality (DWQ) on 11 June 2009
relative to the above referenced project. The items listed in the Request for More
Information and the responses are provided below.
Please re-submit your site plans on full plan sheets at a scale no
smaller than 1" = 50' with topographic contours shown. S21 is depicted
on Drawing Number W23, S23 is depicted on Drawing Number W32 and
W32A, and S15 is depicted on Drawing Number W31. The above referenced
drawings are attached.
2. Please provide a detailed planting plan for the buffers (standard format
includes: scientific name, common name, source of the plant material,
plant spacing, wetland indicator status, etc. as well as planting
specifications). Buffers within the 40-foot wide project corridor will be
maintained by regular mowing. The Fertilizing, Seeding, and Mulching
specifications for the project are attached (Section 02420). The seed mixture
used within jurisdictional wetlands differs from the attached specification;
however, none of the buffer areas included in this permit application are
within jurisdictional wetlands. Several of the detail sheets for the project are
attached. These details include temporary check dam, synthetic matting,
equipment stream crossing, anti-seep collar, and stream bank protection.
ARCADIS
801 Corporate Center Drive
Suite 300
Raleigh
North Carolina 27607
Tel [phone]
Fax [phone]
www.arcadis-us.com
WATER RESOURCES
Date:
16 June 2009
Contact:
Linda Diebolt
Phone:
919.854.1282
Email:
[e-mail]
Our ref:
NC705008.2000
ARCADIS
3. Please indicate all stream impacts including all fill slopes, dissipaters,
and bank stabilization on the site plan. All stream impacts are shown on
the attached figures.
4. Please enumerate all riparian buffer impacts on the site plan and clearly
label impacts (Buffer Impact 1, etc.). Riparian buffer impacts are shown
and labeled on the attached figures.
5. Please locate all isolated or non-isolated wetlands, streams, and other
waters of the State as overlays on the site plan. All state and federal
jurisdictional wetlands and streams are shown on the attached figures.
6. Please locate all of the protected riparian buffers as overlays on the
site plan, showing Zone 1 and Zone 2. All areas of Zone 1 and Zone 2 of
the riparian buffers impacted by the proposed project are shown on the
attached figures.
Please feel free to call or e-mail me at [e-mail] if you have any
questions or require additional information.
Sincerely,
ARCADIS
Linda DiebolIst
Senior Scien Copies:

City of Raleigh - Dale Crisp
ARCADIS - Nichole Johnson
Cyndi Karoly
16 June 2009
Page:
2/2
E.B. Bain WTP s
A
PENMARC DR
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Stream Impacts: 0.014 acre 1( N9
NALKER ST B
Buffer Zone 1 Impacts: 0.055 acre s
Buffer Zone 2 Impacts: 0.037 acre
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t Buffer Zone 1 Impacts: 0.055 acre
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y Wetland Impacts: 0.02 acre Buffer Zone 1 Impacts: 0.055 acre
Buffer Zone 2 Impacts: 0.037 acre
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Stream Impacts: 0.009 acre New Impacts r
Buffer Zone 1 Impacts: 0.055 acre` Temporary Stream Impacts: 0.004 acre r NE?ARx
Buffer Zone 2 Impacts: 0.037 acre Permanent Buffer Zone 1 Impacts: 0.055 acre
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Legend -
Transmission Main Route PLAN VIEW
Dempsey E. Benton WTP Figure
Blow Off Location
Neuse River Buffer - Zone 1 City of Raleigh 5
Neuse River Buffer - Zone 2 0 0.125 0.25 0.5
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Legend PLAN VIEW
Transmission Main Route Dempsey E. Benton V TP Figure
® Area of Stream and/or Buffer Impact City of Raleigh
Neuse River Buffer - Zone 1 7
n, Neuse River Buffer - Zone 2 0 50 1 00 200
Surface Waters Feet
1 inch = 100 feet
t
Awomw._.w.l:.'n.
315 and B2
qew Impacts
Femporary Stream Impacts: 40 feet/0.004 acre
'ermanent Buffer Zone 1 Impacts: 0.055 acre
'ermanent Buffer Zone 2 Impacts: 0.037 acre
RC/SH S. a
�i
o
r.
x
Q
i +r
s � h
ii
Legend PLAN VIEW
Transmission Main Route Dempsey E. Benton WTP Figure
® Area of Stream and/or Buffer Impact City of Raleigh
Neuse River Buffer - Zone 1 8
Neuse River Buffer - Zone 2 0 50 100 200
Surface Waters Feet
1 inch= 100 feet
P
yi
Y
�
I
Awomw._.w.l:.'n.
315 and B2
qew Impacts
Femporary Stream Impacts: 40 feet/0.004 acre
'ermanent Buffer Zone 1 Impacts: 0.055 acre
'ermanent Buffer Zone 2 Impacts: 0.037 acre
RC/SH S. a
�i
o
r.
x
Q
i +r
s � h
ii
Legend PLAN VIEW
Transmission Main Route Dempsey E. Benton WTP Figure
® Area of Stream and/or Buffer Impact City of Raleigh
Neuse River Buffer - Zone 1 8
Neuse River Buffer - Zone 2 0 50 100 200
Surface Waters Feet
1 inch= 100 feet
P
yi
Awomw._.w.l:.'n.
315 and B2
qew Impacts
Femporary Stream Impacts: 40 feet/0.004 acre
'ermanent Buffer Zone 1 Impacts: 0.055 acre
'ermanent Buffer Zone 2 Impacts: 0.037 acre
RC/SH S. a
�i
o
r.
x
Q
i +r
s � h
ii
Legend PLAN VIEW
Transmission Main Route Dempsey E. Benton WTP Figure
® Area of Stream and/or Buffer Impact City of Raleigh
Neuse River Buffer - Zone 1 8
Neuse River Buffer - Zone 2 0 50 100 200
Surface Waters Feet
1 inch= 100 feet

Legend PLAN VIEW
Transmission Main Route Dempsey E. Benton WTP Figure
® Area of Stream Impact Not Previously Permi ed City of Raleigh
Neuse River Buffer - Zone 1 Q
Neuse River Buffer - Zone 2 0 50 100 200 ?/
Surface Waters Feet
1 inch = 100 feet
SECTION 02420
FERTILIZING, SEEDING, AND MULCHING
PART 1 GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions, and Division 1 through 15 Specification sections, apply to work of this section.
1.2 DESCRIPTION OF WORK
A. Permanent Seeding: Permanent seeding is required for all areas disturbed by construction,
except for areas covered by structures, pavements, etc. Permanent ground cover shall be
provided for all disturbed areas within 15 working days or 90 calendar days (which-ever is
shorter) when final grade is obtained and not otherwise covered.
B. Temporary Seeding: Temporary seeding is required for those areas disturbed by construction
and left exposed for periods of 21 working days or more before being brought to final grade
and permanently seeded.
1.3 QUALITY ASSURANCE
A. Codes and Standards: In general, follow procedures and guides published by the Soil
Conservation Service, United States Department of Agriculture.
B. Soil Tests: Secure minimum of 1 standard soil sample per acre. Submit samples to North
Carolina Department of Agriculture for analysis and recommendations for addition of lime
and other amendments. Submit recommendations to Engineer for review.
1.4 SUBMITTALS
A. Submit material certificates signed by the supplier that the materials used for fertilizing,
seeding, and mulching comply with these specifications.
PART 2 PRODUCTS
2.1 FERTILIZER
A. Provide 10-10-10 commercial fertilizer conforming to statutory requirements and all rules and
regulations adopted by the North Carolina Board of Agriculture.
2.2 LIMESTONE
CITY OF RALEIGH, NORTH CAROLINA FERTILIZING, SEEDING, AND MULCHING
Dempsey E. Benton WTP Water Transmission Main - Phase 3 02420 - 1
ARCADIS G&M of North Carolina, Inc. Printed: 6/16/2009
Project No. NC705008.0000
A. Provide limestone conforming to all statutory requirements and all rules and regulations
adopted by the North Carolina Board of Agriculture. Apply ground agricultural limestone at
the rate of 2-3 tons per acre
2.3 SEED
A. Provide seed conforming to all statutory requirements and all rules and regulations adopted by
the North Carolina Department of Agriculture.
B. Provide seed mixtures as tabulated below. Deliver to site in original containers bearing the
appropriate guaranteed mixtures. Seed shall show a purity of not less than 90 percent and
germination quality of not less than 85 percent.
1. Permanent for slopes flatter than 4 horizontal to one vertical (<4:1 slope):
Mixture:
200 lbs/ac of at least 3
turf-type Tall Fescue varieties: August to mid October
70 lbs/ac Bermudagrass Mid February to mid April
2. Permanent for slopes equal to or steeper than 4 horizontal to one vertical (>4:1 slope):
Mixture:
80 lbs/ac Tall Fescue
50 lbs/ac Pensacola Bahiagrass
40 lbs/ac Kobe Lespedeza
Seeding Dates: Mid February to end April
Early September to end October
Notes: From mid-April through mid-August add 10 lbs/ac German millet or 15 lbs/ac
Sudangrass.
3. Temporary:
120 lbs/ac Rye Grain: Mid August to mid April
40 lbs/ac German Millet: Mid April to mid August
4. Other mixtures as recommended by the Soil Conservation Service may be considered.
2.4 MULCH
A. Mulch all seeded areas except where jute mesh is required. Use undamaged, air-dry, threshed
small grain straw free of undesirable weed seed. Apply emulsified asphalt tack at a rate of
0.10 gallons per square yard.
B. Spread mulch by hand or with a mulch blower. When spreading straw mulch by hand, divide
the area to be mulched into sections of approximately 1,000 ft2, and place 70-90 lb of straw (1
'/2 to 2 bales) in each section to facilitate uniform distribution. After spreading mulch, no more
than 25% of the ground surface shall be visible.
2.5 ROLLED EROSION CONTROL
A. Use rolled erosion control (REC) on seeded areas where slope is steeper than 2 horizontal to
one vertical (2:1 slope). Use REC weighing approximately 90 lbs. per 100 sq. yds. and having
3/4" openings. REC should withstand channel velocity up to 6 feet per second.
CITY OF RALEIGH, NORTH CAROLINA FERTILIZING, SEEDING, AND MULCHING
Dempsey E. Benton WTP Water Transmission Main - Phase 3 02420 - 2
ARCADIS G&M of North Carolina, Inc. Printed: 6/16/2009
Project No. NC705008.0000
B. Anchor the rolled erosion control using 11 gauge, at least 6in length by 1 in wide staples or
12in minimum length wooden stakes. Drive staples or stakes so that the top is flush with the
ground surface. Anchor each REC every 3 feet along it's center. Longitudinal overlaps must
be sufficient enough to accommodate a row of anchors and be uniform along the entire length
of overlap. Anchor every 3 feet along the overlap length.
PART 3 EXECUTION
3.1 GENERAL
A. Follow procedures set forth in the publication "Guide for Sediment Control on Construction
Sites in North Carolina" by the United States Department of Agriculture, Soil Conservation
Service, and as specified herein.
3.2 SEED BED PREPARATION
A. Remove all grass and weeds and shape overall area to even out high and low spots.
B. Spread a minimum of 3 inches of topsoil over all disturbed areas to the finished grade as
shown on the drawings.
C. Scarify soil to a depth of 3 inches and work into a satisfactory seed bed by discing, use of
cultipackers, harrows, drags or other approved means.
D. Preparation outlined above shall not be done when the soil is frozen, wet or otherwise in an
unfavorable condition.
E. Begin and complete seeding operations as outlined below as soon as possible after final or
intermediate grading is completed.
F. Distribute lime and fertilizer, as required, uniformly over seed bed and harrow, rake, or
otherwise work same into seed bed.
G. Distribute seed uniformly over seed bed. Lightly rake surface of seed bed to cover seed to a
maximum depth of 1/4 inch.
H. Compact seed bed after covering seed with an approved roller or drag.
No lime, fertilizer, or seed shall be applied during a strong wind, when soil is wet or otherwise
unworkable. Should rain follow seeding before rolling is begun, the bed shall not be rolled.
No rip-rap is to be placed along the banks of new fill. Maintain the area and repair any
erosion damage until a permanent ground cover is established. Use mulch or mesh as
required.
3.3 PERMANENT SEEDING
A. Application of Lime, Fertilizer, and Seed:
CITY OF RALEIGH, NORTH CAROLINA FERTILIZING, SEEDING, AND MULCHING
Dempsey E. Benton WTP Water Transmission Main - Phase 3 02420 - 3
ARCADIS G&M of North Carolina, Inc. Printed: 6/16/2009
Project No. NC705008.0000
1. Lime with 40 lbs. per 1,000 sq. ft. before seeding.
2. Fertilize with 15 lbs. per 1,000 sq. ft. when seeding. Top dress with 10 lbs. per 1,000 sq.
ft. when cover is established.
3. Provide permanent seeding to completed areas during the permanent seeding period. If
grading is completed at times other than the recommended season, provide temporary
seeding or other protection approved by the Engineer until the appropriate planting
season begins.
3.4 TEMPORARY SEEDING
A. Application of Fertilizer and Seed:
1. Fertilize with 15 lbs. per 1,000 sq. ft. when seeding. Top dress with 10 lbs. per 1,000 sq.
ft. when cover is established.
2. Between February and May and September and November, seed with 1301bs. per acre of
Rye; between June and August seed with 40 lbs. per acre of Browntop Millet.
3.5 APPLICATION OF MULCH AND JUTE MESH
A. Apply mulch at the rate of 100 lbs. per 1,000 sq. ft. Anchor with asphalt or other approved
method.
B. Apply jute mesh according to the manufacturer's recommendations. Anchor with steel hairpin
shaped wire staples.
3.6 REPAIR AND MAINTENANCE
A. Maintain the grass on the area for a period of 90 days after the grass growth appears. Reseed
bare areas and repair all eroded areas during that period.
END OF SECTION
CITY OF RALEIGH, NORTH CAROLINA FERTILIZING, SEEDING, AND MULCHING
Dempsey E. Benton WTP Water Transmission Main - Phase 3 02420 - 4
ARCADIS G&M of North Carolina, Inc. Printed: 6/16/2009
Project No. NC705008.0000