remediation pad. Any rain run-off and leachate that is
generated, drains into a series of ponds for treatment. Between each pond there is a
baffle that skims off any floating hydrocarbons as the leachate passes through. These
ponds also treat the leachate and stormwater from pad 1 where remediated drilling
wastes are stored and/or processed further. The treated liquid from the pond
treatment system (PTS) is then irrigated to cut and carry pasture on two irrigation
areas.
Run off and leachate
SDC Stratford WWTP Annual Report 2021-2022
The cleanfill was inspected during fine weather. It had rained in the days preceding. There were no dust or
odour issues and the inspecting officer noted that the site appeared to be tidy. The majority of the
consented cleanfill area appeared to have been reinstated into paddock or was used for storage. Some
material had been recently deposited at the cleanfill, but a visual inspection confirmed that there was no
prohibited material. The material had originated from the site itself. A
sea, but these are generally few in number and only the rare spills have a major and
indeed measurable impact on seafoods in the area.
“Indirect” discharges is a term used to generally describe the effects of rivers on the
coast, and therefore include the considerable amounts of faecal bacteria, nutrients and
solids carried down the Waitara River after rain on the farms and hill country
upstream (now seen as the major source of these in local seafoods). The material and
is approximately 6.1 km2. The length
of the catchment, from the headwaters between Paraite and Corbett Roads to the sea at Bell Block beach, is
approximately five kilometres.
The industrial area at Bell Block is situated mid-catchment (Figure 1). Historically, the industrial areas were
located predominantly on the western side of the stream however ongoing development since 2016 has
resulted in more sites on the eastern side. These sites fall under permitted activity rules and are not
and is then pumped to the effluent treatment plant and discharged via the
marine outfall. Stormwater from the tankage area is pumped over into the process sewers which flow to the
storm pond. The stormwater falling on the non-process areas of the western half of the site (Figure 1) is
directed by “v” ditches running alongside the roads to a dam/pond and then out to the Tasman Sea via the
Manu Stream. Stormwater falling on the eastern side of the site is directed to unnamed tributaries of the
the contained area or soak hole, even in
the heavy rain occurring at the time of inspection. Overall the site looked tidy and appeared to be well
managed at the time of inspection.
21 February 2019
The site has had a few new loads of green waste placed on it. There was no evidence of any stormwater or
leachate discharge on site and there was nothing collected in the contained corner of the site. Overall the
site was being managed in an appropriate manner at the time of inspection. …
installed as per manufacturer's specifications or as outlined in the Water Measurement Code of Practice. You must provide an installation certificate to the Council following any new installation. Verification of water metersFor measuring and reporting to be useful, we must be able to rely confidently on the water-take data we get. All water meters that fall under the national regulations or under resource consent requirement must be verified to be accurate to within ± 5%.
Verification is required
installed as per manufacturer's specifications or as outlined in the Water Measurement Code of Practice. You must provide an installation certificate to the Council following any new installation. Verification of water metersFor measuring and reporting to be useful, we must be able to rely confidently on the water-take data we get. All water meters that fall under the national regulations or under resource consent requirement must be verified to be accurate to within ± 5%.
Verification is required
being undertaken to reduce the footprint of the pad. This would greatly reduce the volume of stormwater
collected within the pad. Consequently there would be less pumping to the wetland treatment system and
therefore, generally an increase of retention time within the treatment system. RNZ were instructed to
ensure that uncontaminated storm water runoff was unable to enter the paunch pad, so that only the rain
that falls into the pond is required to be pumped through the wetland treatment