APPENDIX A TEST PIT AND PERCOLATION DATA MLFA Test Pit

APPENDIX A
TEST PIT AND PERCOLATION DATA
MLFA Test Pit Drawings G1.9 to G1.13
WJNA November 1997 Draft Ninilchik Village Safe Water Sewer System Feasibility Study
MLFA Test Pit Drawings G1.9 to G1.13
WJNA November 1997 Draft Ninilchik Village Safe Water Sewer System Feasibility Study
APPENDIX B
AS-BUILT INFORMATION
2010 Ninilchik Townsite Block 3 Lot 5 ADEC Documentation of Construction
1977 Ninilchik Townsite Block 4 Lot 3 ADEC Diagram of Sewer and Water Facilities
WJNA 1998 Ninilchik Village Sewer System Pilot Project As-Built Drawings
2010 Ninilchik Townsite Block 3 Lot 5 ADEC Documentation of Construction
1977 Ninilchik Townsite Block 4 Lot 3 ADEC Diagram of Sewer and Water Facilities
WJNA 1998 Ninilchik Village Sewer System Pilot Project As-Built Drawings
APPENDIX C
COMMUNITY INPUT
VSW and LPCC Comments
VSW and LPCC Comments
VSW DESIGN REVIEW COMMENTS AND RESPONSES FORM
Community:
Plan Set:
Ninilchik Water and Sewer Association
Draft Ninilchik Water and Sewer Improvements Septic System Evaluation Technical Memorandum, June 7, 2011
Comments by: VSW
Date:
Serial
Location
Commented on
Design Review Comments - August 11, 2011
All existing systems should be pumped and
properly abandoned.
1
March 2, 2012
3
4
Reviewer Response - April 4, 2012
We will add the following statement in Section
3.0, Recommendations and Conclusions.
"Existing systems that are being replaced should
be pumped and properly abandoned."
Okay
The following paragraph will be added to page 4
discussions: "As indicated in 18 AAC 72.035(c),
2nd paragraph, conventional system 5ft below
a conventional onsite system must have frost
grade (assumption) should be modified to note
penetration protection such as adequate depth of
additional allowances under 18AAC72.035©
burial, mounding above grade, or insulation. In
Table A. This may make a difference for some of
the Ninilchik area, four feet of ground cover or up
the systems being called out as mound systems.
to two inches of insulation with two feet of
ground cover is required."
Ninilchik Water and Sewer Improvements
Septic System Evaluation Technical Memorandum
April 4, 2012
Designer Response - March 2, 2012
We will add the following statement in Section
3.0, Recommendations and Conclusions.
Perpetual maintenance agreements for
mechanical advanced treatment systems will be "Maintenance agreements for advanced
treatment systems may be required for
required for permitting.
permitting ."
The water main will need to be constructed first,
Coordination between existing wastewater and then water service lines can be constructed,
followed by the installation of permitted on-site
drinking water systems will be required, i.e.
septic systems. Systems will only be abandoned
permitted wastewater systems will be required
after new services are provided. No change
prior to water service being connected.
required.
2
4
August 11, 2011
Designer: Michael L. Foster & Associates, Inc.
Page 1 of 3
Okay
Please add a sentence clarifying the SHPO
investigation requirements and the link to the
water distribution project.
Okay
VSW DESIGN REVIEW COMMENTS AND RESPONSES FORM
5
We will add the following statement in Section
3.0, Recommendations and Conclusions.
Water waivers - some may not be approvable.
"Where there is a separation issue between the
There is one system with a septic tank within 9
on-site well and septic system, the utility may
feet of the on-site well that is still functional. Any
require abandonment of the well as part of the
waiver less than 50% of the required distance will
hook up agreement. Individuals that choose not
have to have strong backup to support the
to hook up to the community water system may
waiver.
not be able to get a waiver for an on-site well
and septic system. "
6
5 sites have water service lines over or in the
close proximity of the wastewater systems.
There is a concern of cross connections. The
include house # 3, 6, 12, 14, and 15 (lot adjacent
to the actual church).
7
Building #16 is the water treatment plant. MLFA
House #16 waivers for the community well will be will set up a meeting with Scott Forgue, Monica
English, and VSW to discuss the water treatment
reviewed by Scott Forgue, with drinking water.
plant wastewater system. No change required.
8
We will add the following statement in Section
Please add sentence noting the requirement that
Systems with a wastewater system on a different
3.0, Recommendations and Conclusions. "A
any home with a wastewater system located
lot than their home is on will need to have
site control agreement must be recorded with the
outside their property will need to have site
property ownership reviewed with their permit
deed if a wastewater system is located on a
control prior to their system's construction.
application.
parcel other than the one served. "
9
House #2, Holding tank - What is the tank
integrity? This will need to be known for the
water service connection. Are there pumping
records? This tank may need to be replaced.
Tax records indicate the dwelling was
constructed in 2006. Therefore, we assume the
tank integrity is good. We did not obtain
pumping records. We will add the following
sentence to Section 2.2: "Since the tax records
indicate the house was constructed in 2006, we
assume the integrity of the holding tank is good
and a replacement system will not be required."
Okay
10
Table #5 please add a column regarding the
likelihood of receiving DEC approval of the
system.
A paragraph discussing the likelihood of
receiving ADEC approval for waivers will be
added. Generally, there is more potential for
cross contamination with a vertical well than with
a piped water system.
Okay
Ninilchik Water and Sewer Improvements
Septic System Evaluation Technical Memorandum
Okay
The design of the water service lines assumed a
community sewer system would be installed and
Please note that all on-site wastewater plans will
on-site wastewater systems would be
be submitted to DEC prior to construction,
abandoned. Water service line locations will be
including conventional systems.
adjusted during the design to accommodate for
on-site wastewater systems. No change
required.
Page 2 of 3
Okay
VSW DESIGN REVIEW COMMENTS AND RESPONSES FORM
Ninilchik Water and Sewer Association Comments July and August 2011
1
Since a National Oceanic and Atmospheric
Administration (NOAA) station datum for tides
does not exist in Ninilchik, the tidal data is
subject to interpretation. As stated on page 4,
Existing septic systems for House #11 and
we assumed "The 20.42-foot mean higher high
House #12 are more than 100 feet from the
water (MHHW) and 0-foot mean lower low water
Figures 11 and Ninilchik River. The installer used 17 feet as the
(MLLW) levels at the National Oceanic and
mean higher high water level to install the tanks
12
Atmospheric Administration (NOAA) tidal station
and drainfields 100 feet from the higher high
datum in Nikiski (Station ID 9455760) for Epoch
water level.
1983-2001 are similar to conditions in the
Ninilchik area. " MLFA has consistently used
20.42-feet as the MHHW for our designs and
reports. No change required.
Ninilchik Water and Sewer Improvements
Septic System Evaluation Technical Memorandum
Page 3 of 3
Okay